diff --git a/.gitignore b/.gitignore
index 3cc35ff7cd1f4357b7649d76d2cc4ea1c8e52711..618c9ba5ae1ae05d93bc0f1d1bdafafc03518703 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,7 @@ objs
 # Python items
 cython_debug/
 python_build/
+python_format_venv/
 .coverage*
 .eggs
 htmlcov/
@@ -96,10 +97,17 @@ DerivedData
 Pods/
 
 # Artifacts directory
-artifacts/
+/artifacts/
 
 # Git generated files for conflicting
 *.orig
 
 # IDE specific folder for JetBrains IDEs
 .idea/
+
+# Blaze files
+bazel-bin
+bazel-genfiles
+bazel-grpc
+bazel-out
+bazel-testlogs
diff --git a/.gitmodules b/.gitmodules
index 04d155cfb41657163afc3ede4a0e5bfd419fc6ae..c8ca8ab046332dc65d9de36fcb69da09ea306205 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -20,3 +20,6 @@
 [submodule "third_party/benchmark"]
 	path = third_party/benchmark
 	url = https://github.com/google/benchmark
+[submodule "third_party/boringssl-with-bazel"]
+	path = third_party/boringssl-with-bazel
+	url = https://boringssl.googlesource.com/boringssl
diff --git a/BUILD b/BUILD
index ab0fc237b78424d3129cc3363850e617e7104928..54192514cc773da8a6c68192dde43fa0c7b96163 100644
--- a/BUILD
+++ b/BUILD
@@ -1,11 +1,6 @@
-# GRPC Bazel BUILD file.
-# This currently builds C, C++ and Objective-C code.
-# This file has been automatically generated from a template file.
-# Please look at the templates directory instead.
-# This file can be regenerated from the template by running
-# tools/buildgen/generate_projects.sh
-
-# Copyright 2015, Google Inc.
+# gRPC Bazel BUILD file.
+#
+# Copyright 2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -40,2884 +35,1203 @@ exports_files(["LICENSE"])
 
 package(default_visibility = ["//visibility:public"])
 
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_proto_plugin")
 
+g_stands_for = "good"
 
+core_version = "2.0.0-dev"
 
+version = "1.1.0-dev"
 
-cc_library(
-  name = "gpr",
-  srcs = [
-    "src/core/lib/profiling/timers.h",
-    "src/core/lib/support/backoff.h",
-    "src/core/lib/support/block_annotate.h",
-    "src/core/lib/support/env.h",
-    "src/core/lib/support/mpscq.h",
-    "src/core/lib/support/murmur_hash.h",
-    "src/core/lib/support/stack_lockfree.h",
-    "src/core/lib/support/string.h",
-    "src/core/lib/support/string_windows.h",
-    "src/core/lib/support/thd_internal.h",
-    "src/core/lib/support/time_precise.h",
-    "src/core/lib/support/tmpfile.h",
-    "src/core/lib/profiling/basic_timers.c",
-    "src/core/lib/profiling/stap_timers.c",
-    "src/core/lib/support/alloc.c",
-    "src/core/lib/support/avl.c",
-    "src/core/lib/support/backoff.c",
-    "src/core/lib/support/cmdline.c",
-    "src/core/lib/support/cpu_iphone.c",
-    "src/core/lib/support/cpu_linux.c",
-    "src/core/lib/support/cpu_posix.c",
-    "src/core/lib/support/cpu_windows.c",
-    "src/core/lib/support/env_linux.c",
-    "src/core/lib/support/env_posix.c",
-    "src/core/lib/support/env_windows.c",
-    "src/core/lib/support/histogram.c",
-    "src/core/lib/support/host_port.c",
-    "src/core/lib/support/log.c",
-    "src/core/lib/support/log_android.c",
-    "src/core/lib/support/log_linux.c",
-    "src/core/lib/support/log_posix.c",
-    "src/core/lib/support/log_windows.c",
-    "src/core/lib/support/mpscq.c",
-    "src/core/lib/support/murmur_hash.c",
-    "src/core/lib/support/stack_lockfree.c",
-    "src/core/lib/support/string.c",
-    "src/core/lib/support/string_posix.c",
-    "src/core/lib/support/string_util_windows.c",
-    "src/core/lib/support/string_windows.c",
-    "src/core/lib/support/subprocess_posix.c",
-    "src/core/lib/support/subprocess_windows.c",
-    "src/core/lib/support/sync.c",
-    "src/core/lib/support/sync_posix.c",
-    "src/core/lib/support/sync_windows.c",
-    "src/core/lib/support/thd.c",
-    "src/core/lib/support/thd_posix.c",
-    "src/core/lib/support/thd_windows.c",
-    "src/core/lib/support/time.c",
-    "src/core/lib/support/time_posix.c",
-    "src/core/lib/support/time_precise.c",
-    "src/core/lib/support/time_windows.c",
-    "src/core/lib/support/tls_pthread.c",
-    "src/core/lib/support/tmpfile_msys.c",
-    "src/core/lib/support/tmpfile_posix.c",
-    "src/core/lib/support/tmpfile_windows.c",
-    "src/core/lib/support/wrap_memcpy.c",
-  ],
-  hdrs = [
-    "include/grpc/support/alloc.h",
-    "include/grpc/support/atm.h",
-    "include/grpc/support/atm_gcc_atomic.h",
-    "include/grpc/support/atm_gcc_sync.h",
-    "include/grpc/support/atm_windows.h",
-    "include/grpc/support/avl.h",
-    "include/grpc/support/cmdline.h",
-    "include/grpc/support/cpu.h",
-    "include/grpc/support/histogram.h",
-    "include/grpc/support/host_port.h",
-    "include/grpc/support/log.h",
-    "include/grpc/support/log_windows.h",
-    "include/grpc/support/port_platform.h",
-    "include/grpc/support/string_util.h",
-    "include/grpc/support/subprocess.h",
-    "include/grpc/support/sync.h",
-    "include/grpc/support/sync_generic.h",
-    "include/grpc/support/sync_posix.h",
-    "include/grpc/support/sync_windows.h",
-    "include/grpc/support/thd.h",
-    "include/grpc/support/time.h",
-    "include/grpc/support/tls.h",
-    "include/grpc/support/tls_gcc.h",
-    "include/grpc/support/tls_msvc.h",
-    "include/grpc/support/tls_pthread.h",
-    "include/grpc/support/useful.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_windows.h",
-    "include/grpc/impl/codegen/gpr_types.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_windows.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-  ],
+grpc_cc_library(
+    name = "gpr",
+    language = "c",
+    standalone = True,
+    deps = [
+        "gpr_base",
+    ],
 )
 
-
-
-cc_library(
-  name = "grpc",
-  srcs = [
-    "src/core/lib/channel/channel_args.h",
-    "src/core/lib/channel/channel_stack.h",
-    "src/core/lib/channel/channel_stack_builder.h",
-    "src/core/lib/channel/compress_filter.h",
-    "src/core/lib/channel/connected_channel.h",
-    "src/core/lib/channel/context.h",
-    "src/core/lib/channel/deadline_filter.h",
-    "src/core/lib/channel/handshaker.h",
-    "src/core/lib/channel/http_client_filter.h",
-    "src/core/lib/channel/http_server_filter.h",
-    "src/core/lib/channel/message_size_filter.h",
-    "src/core/lib/compression/algorithm_metadata.h",
-    "src/core/lib/compression/message_compress.h",
-    "src/core/lib/debug/trace.h",
-    "src/core/lib/http/format_request.h",
-    "src/core/lib/http/httpcli.h",
-    "src/core/lib/http/parser.h",
-    "src/core/lib/iomgr/closure.h",
-    "src/core/lib/iomgr/combiner.h",
-    "src/core/lib/iomgr/endpoint.h",
-    "src/core/lib/iomgr/endpoint_pair.h",
-    "src/core/lib/iomgr/error.h",
-    "src/core/lib/iomgr/ev_epoll_linux.h",
-    "src/core/lib/iomgr/ev_poll_posix.h",
-    "src/core/lib/iomgr/ev_posix.h",
-    "src/core/lib/iomgr/exec_ctx.h",
-    "src/core/lib/iomgr/executor.h",
-    "src/core/lib/iomgr/iocp_windows.h",
-    "src/core/lib/iomgr/iomgr.h",
-    "src/core/lib/iomgr/iomgr_internal.h",
-    "src/core/lib/iomgr/iomgr_posix.h",
-    "src/core/lib/iomgr/load_file.h",
-    "src/core/lib/iomgr/network_status_tracker.h",
-    "src/core/lib/iomgr/polling_entity.h",
-    "src/core/lib/iomgr/pollset.h",
-    "src/core/lib/iomgr/pollset_set.h",
-    "src/core/lib/iomgr/pollset_set_windows.h",
-    "src/core/lib/iomgr/pollset_uv.h",
-    "src/core/lib/iomgr/pollset_windows.h",
-    "src/core/lib/iomgr/port.h",
-    "src/core/lib/iomgr/resolve_address.h",
-    "src/core/lib/iomgr/resource_quota.h",
-    "src/core/lib/iomgr/sockaddr.h",
-    "src/core/lib/iomgr/sockaddr_posix.h",
-    "src/core/lib/iomgr/sockaddr_utils.h",
-    "src/core/lib/iomgr/sockaddr_windows.h",
-    "src/core/lib/iomgr/socket_mutator.h",
-    "src/core/lib/iomgr/socket_utils.h",
-    "src/core/lib/iomgr/socket_utils_posix.h",
-    "src/core/lib/iomgr/socket_windows.h",
-    "src/core/lib/iomgr/tcp_client.h",
-    "src/core/lib/iomgr/tcp_client_posix.h",
-    "src/core/lib/iomgr/tcp_posix.h",
-    "src/core/lib/iomgr/tcp_server.h",
-    "src/core/lib/iomgr/tcp_uv.h",
-    "src/core/lib/iomgr/tcp_windows.h",
-    "src/core/lib/iomgr/time_averaged_stats.h",
-    "src/core/lib/iomgr/timer.h",
-    "src/core/lib/iomgr/timer_generic.h",
-    "src/core/lib/iomgr/timer_heap.h",
-    "src/core/lib/iomgr/timer_uv.h",
-    "src/core/lib/iomgr/udp_server.h",
-    "src/core/lib/iomgr/unix_sockets_posix.h",
-    "src/core/lib/iomgr/wakeup_fd_cv.h",
-    "src/core/lib/iomgr/wakeup_fd_pipe.h",
-    "src/core/lib/iomgr/wakeup_fd_posix.h",
-    "src/core/lib/iomgr/workqueue.h",
-    "src/core/lib/iomgr/workqueue_uv.h",
-    "src/core/lib/iomgr/workqueue_windows.h",
-    "src/core/lib/json/json.h",
-    "src/core/lib/json/json_common.h",
-    "src/core/lib/json/json_reader.h",
-    "src/core/lib/json/json_writer.h",
-    "src/core/lib/slice/percent_encoding.h",
-    "src/core/lib/slice/slice_string_helpers.h",
-    "src/core/lib/surface/api_trace.h",
-    "src/core/lib/surface/call.h",
-    "src/core/lib/surface/call_test_only.h",
-    "src/core/lib/surface/channel.h",
-    "src/core/lib/surface/channel_init.h",
-    "src/core/lib/surface/channel_stack_type.h",
-    "src/core/lib/surface/completion_queue.h",
-    "src/core/lib/surface/event_string.h",
-    "src/core/lib/surface/init.h",
-    "src/core/lib/surface/lame_client.h",
-    "src/core/lib/surface/server.h",
-    "src/core/lib/transport/byte_stream.h",
-    "src/core/lib/transport/connectivity_state.h",
-    "src/core/lib/transport/mdstr_hash_table.h",
-    "src/core/lib/transport/metadata.h",
-    "src/core/lib/transport/metadata_batch.h",
-    "src/core/lib/transport/pid_controller.h",
-    "src/core/lib/transport/service_config.h",
-    "src/core/lib/transport/static_metadata.h",
-    "src/core/lib/transport/timeout_encoding.h",
-    "src/core/lib/transport/transport.h",
-    "src/core/lib/transport/transport_impl.h",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.h",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.h",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.h",
-    "src/core/ext/transport/chttp2/transport/frame.h",
-    "src/core/ext/transport/chttp2/transport/frame_data.h",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.h",
-    "src/core/ext/transport/chttp2/transport/frame_ping.h",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.h",
-    "src/core/ext/transport/chttp2/transport/frame_settings.h",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.h",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.h",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.h",
-    "src/core/ext/transport/chttp2/transport/hpack_table.h",
-    "src/core/ext/transport/chttp2/transport/http2_errors.h",
-    "src/core/ext/transport/chttp2/transport/huffsyms.h",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.h",
-    "src/core/ext/transport/chttp2/transport/internal.h",
-    "src/core/ext/transport/chttp2/transport/status_conversion.h",
-    "src/core/ext/transport/chttp2/transport/stream_map.h",
-    "src/core/ext/transport/chttp2/transport/varint.h",
-    "src/core/ext/transport/chttp2/alpn/alpn.h",
-    "src/core/lib/security/context/security_context.h",
-    "src/core/lib/security/credentials/composite/composite_credentials.h",
-    "src/core/lib/security/credentials/credentials.h",
-    "src/core/lib/security/credentials/fake/fake_credentials.h",
-    "src/core/lib/security/credentials/google_default/google_default_credentials.h",
-    "src/core/lib/security/credentials/iam/iam_credentials.h",
-    "src/core/lib/security/credentials/jwt/json_token.h",
-    "src/core/lib/security/credentials/jwt/jwt_credentials.h",
-    "src/core/lib/security/credentials/jwt/jwt_verifier.h",
-    "src/core/lib/security/credentials/oauth2/oauth2_credentials.h",
-    "src/core/lib/security/credentials/plugin/plugin_credentials.h",
-    "src/core/lib/security/credentials/ssl/ssl_credentials.h",
-    "src/core/lib/security/transport/auth_filters.h",
-    "src/core/lib/security/transport/secure_endpoint.h",
-    "src/core/lib/security/transport/security_connector.h",
-    "src/core/lib/security/transport/security_handshaker.h",
-    "src/core/lib/security/transport/tsi_error.h",
-    "src/core/lib/security/util/b64.h",
-    "src/core/lib/security/util/json_util.h",
-    "src/core/lib/tsi/fake_transport_security.h",
-    "src/core/lib/tsi/ssl_transport_security.h",
-    "src/core/lib/tsi/ssl_types.h",
-    "src/core/lib/tsi/transport_security.h",
-    "src/core/lib/tsi/transport_security_interface.h",
-    "src/core/ext/transport/chttp2/server/chttp2_server.h",
-    "src/core/ext/client_channel/client_channel.h",
-    "src/core/ext/client_channel/client_channel_factory.h",
-    "src/core/ext/client_channel/connector.h",
-    "src/core/ext/client_channel/http_connect_handshaker.h",
-    "src/core/ext/client_channel/initial_connect_string.h",
-    "src/core/ext/client_channel/lb_policy.h",
-    "src/core/ext/client_channel/lb_policy_factory.h",
-    "src/core/ext/client_channel/lb_policy_registry.h",
-    "src/core/ext/client_channel/parse_address.h",
-    "src/core/ext/client_channel/resolver.h",
-    "src/core/ext/client_channel/resolver_factory.h",
-    "src/core/ext/client_channel/resolver_registry.h",
-    "src/core/ext/client_channel/subchannel.h",
-    "src/core/ext/client_channel/subchannel_index.h",
-    "src/core/ext/client_channel/uri_parser.h",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.h",
-    "src/core/ext/lb_policy/grpclb/grpclb.h",
-    "src/core/ext/lb_policy/grpclb/load_balancer_api.h",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h",
-    "src/core/ext/load_reporting/load_reporting.h",
-    "src/core/ext/load_reporting/load_reporting_filter.h",
-    "src/core/ext/census/aggregation.h",
-    "src/core/ext/census/base_resources.h",
-    "src/core/ext/census/census_interface.h",
-    "src/core/ext/census/census_rpc_stats.h",
-    "src/core/ext/census/gen/census.pb.h",
-    "src/core/ext/census/gen/trace_context.pb.h",
-    "src/core/ext/census/grpc_filter.h",
-    "src/core/ext/census/mlog.h",
-    "src/core/ext/census/resource.h",
-    "src/core/ext/census/rpc_metric_id.h",
-    "src/core/ext/census/trace_context.h",
-    "src/core/lib/surface/init.c",
-    "src/core/lib/channel/channel_args.c",
-    "src/core/lib/channel/channel_stack.c",
-    "src/core/lib/channel/channel_stack_builder.c",
-    "src/core/lib/channel/compress_filter.c",
-    "src/core/lib/channel/connected_channel.c",
-    "src/core/lib/channel/deadline_filter.c",
-    "src/core/lib/channel/handshaker.c",
-    "src/core/lib/channel/http_client_filter.c",
-    "src/core/lib/channel/http_server_filter.c",
-    "src/core/lib/channel/message_size_filter.c",
-    "src/core/lib/compression/compression.c",
-    "src/core/lib/compression/message_compress.c",
-    "src/core/lib/debug/trace.c",
-    "src/core/lib/http/format_request.c",
-    "src/core/lib/http/httpcli.c",
-    "src/core/lib/http/parser.c",
-    "src/core/lib/iomgr/closure.c",
-    "src/core/lib/iomgr/combiner.c",
-    "src/core/lib/iomgr/endpoint.c",
-    "src/core/lib/iomgr/endpoint_pair_posix.c",
-    "src/core/lib/iomgr/endpoint_pair_uv.c",
-    "src/core/lib/iomgr/endpoint_pair_windows.c",
-    "src/core/lib/iomgr/error.c",
-    "src/core/lib/iomgr/ev_epoll_linux.c",
-    "src/core/lib/iomgr/ev_poll_posix.c",
-    "src/core/lib/iomgr/ev_posix.c",
-    "src/core/lib/iomgr/exec_ctx.c",
-    "src/core/lib/iomgr/executor.c",
-    "src/core/lib/iomgr/iocp_windows.c",
-    "src/core/lib/iomgr/iomgr.c",
-    "src/core/lib/iomgr/iomgr_posix.c",
-    "src/core/lib/iomgr/iomgr_uv.c",
-    "src/core/lib/iomgr/iomgr_windows.c",
-    "src/core/lib/iomgr/load_file.c",
-    "src/core/lib/iomgr/network_status_tracker.c",
-    "src/core/lib/iomgr/polling_entity.c",
-    "src/core/lib/iomgr/pollset_set_uv.c",
-    "src/core/lib/iomgr/pollset_set_windows.c",
-    "src/core/lib/iomgr/pollset_uv.c",
-    "src/core/lib/iomgr/pollset_windows.c",
-    "src/core/lib/iomgr/resolve_address_posix.c",
-    "src/core/lib/iomgr/resolve_address_uv.c",
-    "src/core/lib/iomgr/resolve_address_windows.c",
-    "src/core/lib/iomgr/resource_quota.c",
-    "src/core/lib/iomgr/sockaddr_utils.c",
-    "src/core/lib/iomgr/socket_mutator.c",
-    "src/core/lib/iomgr/socket_utils_common_posix.c",
-    "src/core/lib/iomgr/socket_utils_linux.c",
-    "src/core/lib/iomgr/socket_utils_posix.c",
-    "src/core/lib/iomgr/socket_utils_uv.c",
-    "src/core/lib/iomgr/socket_utils_windows.c",
-    "src/core/lib/iomgr/socket_windows.c",
-    "src/core/lib/iomgr/tcp_client_posix.c",
-    "src/core/lib/iomgr/tcp_client_uv.c",
-    "src/core/lib/iomgr/tcp_client_windows.c",
-    "src/core/lib/iomgr/tcp_posix.c",
-    "src/core/lib/iomgr/tcp_server_posix.c",
-    "src/core/lib/iomgr/tcp_server_uv.c",
-    "src/core/lib/iomgr/tcp_server_windows.c",
-    "src/core/lib/iomgr/tcp_uv.c",
-    "src/core/lib/iomgr/tcp_windows.c",
-    "src/core/lib/iomgr/time_averaged_stats.c",
-    "src/core/lib/iomgr/timer_generic.c",
-    "src/core/lib/iomgr/timer_heap.c",
-    "src/core/lib/iomgr/timer_uv.c",
-    "src/core/lib/iomgr/udp_server.c",
-    "src/core/lib/iomgr/unix_sockets_posix.c",
-    "src/core/lib/iomgr/unix_sockets_posix_noop.c",
-    "src/core/lib/iomgr/wakeup_fd_cv.c",
-    "src/core/lib/iomgr/wakeup_fd_eventfd.c",
-    "src/core/lib/iomgr/wakeup_fd_nospecial.c",
-    "src/core/lib/iomgr/wakeup_fd_pipe.c",
-    "src/core/lib/iomgr/wakeup_fd_posix.c",
-    "src/core/lib/iomgr/workqueue_uv.c",
-    "src/core/lib/iomgr/workqueue_windows.c",
-    "src/core/lib/json/json.c",
-    "src/core/lib/json/json_reader.c",
-    "src/core/lib/json/json_string.c",
-    "src/core/lib/json/json_writer.c",
-    "src/core/lib/slice/percent_encoding.c",
-    "src/core/lib/slice/slice.c",
-    "src/core/lib/slice/slice_buffer.c",
-    "src/core/lib/slice/slice_string_helpers.c",
-    "src/core/lib/surface/alarm.c",
-    "src/core/lib/surface/api_trace.c",
-    "src/core/lib/surface/byte_buffer.c",
-    "src/core/lib/surface/byte_buffer_reader.c",
-    "src/core/lib/surface/call.c",
-    "src/core/lib/surface/call_details.c",
-    "src/core/lib/surface/call_log_batch.c",
-    "src/core/lib/surface/channel.c",
-    "src/core/lib/surface/channel_init.c",
-    "src/core/lib/surface/channel_ping.c",
-    "src/core/lib/surface/channel_stack_type.c",
-    "src/core/lib/surface/completion_queue.c",
-    "src/core/lib/surface/event_string.c",
-    "src/core/lib/surface/lame_client.c",
-    "src/core/lib/surface/metadata_array.c",
-    "src/core/lib/surface/server.c",
-    "src/core/lib/surface/validate_metadata.c",
-    "src/core/lib/surface/version.c",
-    "src/core/lib/transport/byte_stream.c",
-    "src/core/lib/transport/connectivity_state.c",
-    "src/core/lib/transport/mdstr_hash_table.c",
-    "src/core/lib/transport/metadata.c",
-    "src/core/lib/transport/metadata_batch.c",
-    "src/core/lib/transport/pid_controller.c",
-    "src/core/lib/transport/service_config.c",
-    "src/core/lib/transport/static_metadata.c",
-    "src/core/lib/transport/timeout_encoding.c",
-    "src/core/lib/transport/transport.c",
-    "src/core/lib/transport/transport_op_string.c",
-    "src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.c",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_plugin.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.c",
-    "src/core/ext/transport/chttp2/transport/frame_data.c",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.c",
-    "src/core/ext/transport/chttp2/transport/frame_ping.c",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.c",
-    "src/core/ext/transport/chttp2/transport/frame_settings.c",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.c",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.c",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.c",
-    "src/core/ext/transport/chttp2/transport/hpack_table.c",
-    "src/core/ext/transport/chttp2/transport/huffsyms.c",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.c",
-    "src/core/ext/transport/chttp2/transport/parsing.c",
-    "src/core/ext/transport/chttp2/transport/status_conversion.c",
-    "src/core/ext/transport/chttp2/transport/stream_lists.c",
-    "src/core/ext/transport/chttp2/transport/stream_map.c",
-    "src/core/ext/transport/chttp2/transport/varint.c",
-    "src/core/ext/transport/chttp2/transport/writing.c",
-    "src/core/ext/transport/chttp2/alpn/alpn.c",
-    "src/core/lib/http/httpcli_security_connector.c",
-    "src/core/lib/security/context/security_context.c",
-    "src/core/lib/security/credentials/composite/composite_credentials.c",
-    "src/core/lib/security/credentials/credentials.c",
-    "src/core/lib/security/credentials/credentials_metadata.c",
-    "src/core/lib/security/credentials/fake/fake_credentials.c",
-    "src/core/lib/security/credentials/google_default/credentials_generic.c",
-    "src/core/lib/security/credentials/google_default/google_default_credentials.c",
-    "src/core/lib/security/credentials/iam/iam_credentials.c",
-    "src/core/lib/security/credentials/jwt/json_token.c",
-    "src/core/lib/security/credentials/jwt/jwt_credentials.c",
-    "src/core/lib/security/credentials/jwt/jwt_verifier.c",
-    "src/core/lib/security/credentials/oauth2/oauth2_credentials.c",
-    "src/core/lib/security/credentials/plugin/plugin_credentials.c",
-    "src/core/lib/security/credentials/ssl/ssl_credentials.c",
-    "src/core/lib/security/transport/client_auth_filter.c",
-    "src/core/lib/security/transport/secure_endpoint.c",
-    "src/core/lib/security/transport/security_connector.c",
-    "src/core/lib/security/transport/security_handshaker.c",
-    "src/core/lib/security/transport/server_auth_filter.c",
-    "src/core/lib/security/transport/tsi_error.c",
-    "src/core/lib/security/util/b64.c",
-    "src/core/lib/security/util/json_util.c",
-    "src/core/lib/surface/init_secure.c",
-    "src/core/lib/tsi/fake_transport_security.c",
-    "src/core/lib/tsi/ssl_transport_security.c",
-    "src/core/lib/tsi/transport_security.c",
-    "src/core/ext/transport/chttp2/server/chttp2_server.c",
-    "src/core/ext/transport/chttp2/client/secure/secure_channel_create.c",
-    "src/core/ext/client_channel/channel_connectivity.c",
-    "src/core/ext/client_channel/client_channel.c",
-    "src/core/ext/client_channel/client_channel_factory.c",
-    "src/core/ext/client_channel/client_channel_plugin.c",
-    "src/core/ext/client_channel/connector.c",
-    "src/core/ext/client_channel/default_initial_connect_string.c",
-    "src/core/ext/client_channel/http_connect_handshaker.c",
-    "src/core/ext/client_channel/initial_connect_string.c",
-    "src/core/ext/client_channel/lb_policy.c",
-    "src/core/ext/client_channel/lb_policy_factory.c",
-    "src/core/ext/client_channel/lb_policy_registry.c",
-    "src/core/ext/client_channel/parse_address.c",
-    "src/core/ext/client_channel/resolver.c",
-    "src/core/ext/client_channel/resolver_factory.c",
-    "src/core/ext/client_channel/resolver_registry.c",
-    "src/core/ext/client_channel/subchannel.c",
-    "src/core/ext/client_channel/subchannel_index.c",
-    "src/core/ext/client_channel/uri_parser.c",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.c",
-    "src/core/ext/transport/chttp2/server/insecure/server_chttp2.c",
-    "src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c",
-    "src/core/ext/transport/chttp2/client/insecure/channel_create.c",
-    "src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c",
-    "src/core/ext/lb_policy/grpclb/grpclb.c",
-    "src/core/ext/lb_policy/grpclb/load_balancer_api.c",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c",
-    "src/core/ext/lb_policy/pick_first/pick_first.c",
-    "src/core/ext/lb_policy/round_robin/round_robin.c",
-    "src/core/ext/resolver/dns/native/dns_resolver.c",
-    "src/core/ext/resolver/sockaddr/sockaddr_resolver.c",
-    "src/core/ext/load_reporting/load_reporting.c",
-    "src/core/ext/load_reporting/load_reporting_filter.c",
-    "src/core/ext/census/base_resources.c",
-    "src/core/ext/census/context.c",
-    "src/core/ext/census/gen/census.pb.c",
-    "src/core/ext/census/gen/trace_context.pb.c",
-    "src/core/ext/census/grpc_context.c",
-    "src/core/ext/census/grpc_filter.c",
-    "src/core/ext/census/grpc_plugin.c",
-    "src/core/ext/census/initialize.c",
-    "src/core/ext/census/mlog.c",
-    "src/core/ext/census/operation.c",
-    "src/core/ext/census/placeholders.c",
-    "src/core/ext/census/resource.c",
-    "src/core/ext/census/trace_context.c",
-    "src/core/ext/census/tracing.c",
-    "src/core/plugin_registry/grpc_plugin_registry.c",
-  ],
-  hdrs = [
-    "include/grpc/byte_buffer.h",
-    "include/grpc/byte_buffer_reader.h",
-    "include/grpc/compression.h",
-    "include/grpc/grpc.h",
-    "include/grpc/grpc_posix.h",
-    "include/grpc/grpc_security_constants.h",
-    "include/grpc/slice.h",
-    "include/grpc/slice_buffer.h",
-    "include/grpc/status.h",
-    "include/grpc/impl/codegen/byte_buffer_reader.h",
-    "include/grpc/impl/codegen/compression_types.h",
-    "include/grpc/impl/codegen/connectivity_state.h",
-    "include/grpc/impl/codegen/grpc_types.h",
-    "include/grpc/impl/codegen/propagation_bits.h",
-    "include/grpc/impl/codegen/status.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_windows.h",
-    "include/grpc/impl/codegen/gpr_types.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_windows.h",
-    "include/grpc/grpc_security.h",
-    "include/grpc/census.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-    "//external:libssl",
-    "//external:zlib",
-    ":gpr",
-    "//external:nanopb",
-  ],
-  copts = [
-    "-std=gnu99",
-  ],
+grpc_cc_library(
+    name = "grpc",
+    srcs = [
+        "src/core/lib/surface/init.c",
+        "src/core/plugin_registry/grpc_plugin_registry.c",
+    ],
+    language = "c",
+    standalone = True,
+    deps = [
+        "census",
+        "grpc_base",
+        "grpc_lb_policy_grpclb",
+        "grpc_lb_policy_pick_first",
+        "grpc_lb_policy_round_robin",
+        "grpc_load_reporting",
+        "grpc_resolver_dns_native",
+        "grpc_resolver_sockaddr",
+        "grpc_secure",
+        "grpc_transport_chttp2_client_insecure",
+        "grpc_transport_chttp2_client_secure",
+        "grpc_transport_chttp2_server_insecure",
+        "grpc_transport_chttp2_server_secure",
+    ],
 )
 
-
-
-cc_library(
-  name = "grpc_cronet",
-  srcs = [
-    "src/core/lib/channel/channel_args.h",
-    "src/core/lib/channel/channel_stack.h",
-    "src/core/lib/channel/channel_stack_builder.h",
-    "src/core/lib/channel/compress_filter.h",
-    "src/core/lib/channel/connected_channel.h",
-    "src/core/lib/channel/context.h",
-    "src/core/lib/channel/deadline_filter.h",
-    "src/core/lib/channel/handshaker.h",
-    "src/core/lib/channel/http_client_filter.h",
-    "src/core/lib/channel/http_server_filter.h",
-    "src/core/lib/channel/message_size_filter.h",
-    "src/core/lib/compression/algorithm_metadata.h",
-    "src/core/lib/compression/message_compress.h",
-    "src/core/lib/debug/trace.h",
-    "src/core/lib/http/format_request.h",
-    "src/core/lib/http/httpcli.h",
-    "src/core/lib/http/parser.h",
-    "src/core/lib/iomgr/closure.h",
-    "src/core/lib/iomgr/combiner.h",
-    "src/core/lib/iomgr/endpoint.h",
-    "src/core/lib/iomgr/endpoint_pair.h",
-    "src/core/lib/iomgr/error.h",
-    "src/core/lib/iomgr/ev_epoll_linux.h",
-    "src/core/lib/iomgr/ev_poll_posix.h",
-    "src/core/lib/iomgr/ev_posix.h",
-    "src/core/lib/iomgr/exec_ctx.h",
-    "src/core/lib/iomgr/executor.h",
-    "src/core/lib/iomgr/iocp_windows.h",
-    "src/core/lib/iomgr/iomgr.h",
-    "src/core/lib/iomgr/iomgr_internal.h",
-    "src/core/lib/iomgr/iomgr_posix.h",
-    "src/core/lib/iomgr/load_file.h",
-    "src/core/lib/iomgr/network_status_tracker.h",
-    "src/core/lib/iomgr/polling_entity.h",
-    "src/core/lib/iomgr/pollset.h",
-    "src/core/lib/iomgr/pollset_set.h",
-    "src/core/lib/iomgr/pollset_set_windows.h",
-    "src/core/lib/iomgr/pollset_uv.h",
-    "src/core/lib/iomgr/pollset_windows.h",
-    "src/core/lib/iomgr/port.h",
-    "src/core/lib/iomgr/resolve_address.h",
-    "src/core/lib/iomgr/resource_quota.h",
-    "src/core/lib/iomgr/sockaddr.h",
-    "src/core/lib/iomgr/sockaddr_posix.h",
-    "src/core/lib/iomgr/sockaddr_utils.h",
-    "src/core/lib/iomgr/sockaddr_windows.h",
-    "src/core/lib/iomgr/socket_mutator.h",
-    "src/core/lib/iomgr/socket_utils.h",
-    "src/core/lib/iomgr/socket_utils_posix.h",
-    "src/core/lib/iomgr/socket_windows.h",
-    "src/core/lib/iomgr/tcp_client.h",
-    "src/core/lib/iomgr/tcp_client_posix.h",
-    "src/core/lib/iomgr/tcp_posix.h",
-    "src/core/lib/iomgr/tcp_server.h",
-    "src/core/lib/iomgr/tcp_uv.h",
-    "src/core/lib/iomgr/tcp_windows.h",
-    "src/core/lib/iomgr/time_averaged_stats.h",
-    "src/core/lib/iomgr/timer.h",
-    "src/core/lib/iomgr/timer_generic.h",
-    "src/core/lib/iomgr/timer_heap.h",
-    "src/core/lib/iomgr/timer_uv.h",
-    "src/core/lib/iomgr/udp_server.h",
-    "src/core/lib/iomgr/unix_sockets_posix.h",
-    "src/core/lib/iomgr/wakeup_fd_cv.h",
-    "src/core/lib/iomgr/wakeup_fd_pipe.h",
-    "src/core/lib/iomgr/wakeup_fd_posix.h",
-    "src/core/lib/iomgr/workqueue.h",
-    "src/core/lib/iomgr/workqueue_uv.h",
-    "src/core/lib/iomgr/workqueue_windows.h",
-    "src/core/lib/json/json.h",
-    "src/core/lib/json/json_common.h",
-    "src/core/lib/json/json_reader.h",
-    "src/core/lib/json/json_writer.h",
-    "src/core/lib/slice/percent_encoding.h",
-    "src/core/lib/slice/slice_string_helpers.h",
-    "src/core/lib/surface/api_trace.h",
-    "src/core/lib/surface/call.h",
-    "src/core/lib/surface/call_test_only.h",
-    "src/core/lib/surface/channel.h",
-    "src/core/lib/surface/channel_init.h",
-    "src/core/lib/surface/channel_stack_type.h",
-    "src/core/lib/surface/completion_queue.h",
-    "src/core/lib/surface/event_string.h",
-    "src/core/lib/surface/init.h",
-    "src/core/lib/surface/lame_client.h",
-    "src/core/lib/surface/server.h",
-    "src/core/lib/transport/byte_stream.h",
-    "src/core/lib/transport/connectivity_state.h",
-    "src/core/lib/transport/mdstr_hash_table.h",
-    "src/core/lib/transport/metadata.h",
-    "src/core/lib/transport/metadata_batch.h",
-    "src/core/lib/transport/pid_controller.h",
-    "src/core/lib/transport/service_config.h",
-    "src/core/lib/transport/static_metadata.h",
-    "src/core/lib/transport/timeout_encoding.h",
-    "src/core/lib/transport/transport.h",
-    "src/core/lib/transport/transport_impl.h",
-    "third_party/objective_c/Cronet/cronet_c_for_grpc.h",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.h",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.h",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.h",
-    "src/core/ext/transport/chttp2/transport/frame.h",
-    "src/core/ext/transport/chttp2/transport/frame_data.h",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.h",
-    "src/core/ext/transport/chttp2/transport/frame_ping.h",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.h",
-    "src/core/ext/transport/chttp2/transport/frame_settings.h",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.h",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.h",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.h",
-    "src/core/ext/transport/chttp2/transport/hpack_table.h",
-    "src/core/ext/transport/chttp2/transport/http2_errors.h",
-    "src/core/ext/transport/chttp2/transport/huffsyms.h",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.h",
-    "src/core/ext/transport/chttp2/transport/internal.h",
-    "src/core/ext/transport/chttp2/transport/status_conversion.h",
-    "src/core/ext/transport/chttp2/transport/stream_map.h",
-    "src/core/ext/transport/chttp2/transport/varint.h",
-    "src/core/ext/transport/chttp2/alpn/alpn.h",
-    "src/core/ext/client_channel/client_channel.h",
-    "src/core/ext/client_channel/client_channel_factory.h",
-    "src/core/ext/client_channel/connector.h",
-    "src/core/ext/client_channel/http_connect_handshaker.h",
-    "src/core/ext/client_channel/initial_connect_string.h",
-    "src/core/ext/client_channel/lb_policy.h",
-    "src/core/ext/client_channel/lb_policy_factory.h",
-    "src/core/ext/client_channel/lb_policy_registry.h",
-    "src/core/ext/client_channel/parse_address.h",
-    "src/core/ext/client_channel/resolver.h",
-    "src/core/ext/client_channel/resolver_factory.h",
-    "src/core/ext/client_channel/resolver_registry.h",
-    "src/core/ext/client_channel/subchannel.h",
-    "src/core/ext/client_channel/subchannel_index.h",
-    "src/core/ext/client_channel/uri_parser.h",
-    "src/core/lib/security/context/security_context.h",
-    "src/core/lib/security/credentials/composite/composite_credentials.h",
-    "src/core/lib/security/credentials/credentials.h",
-    "src/core/lib/security/credentials/fake/fake_credentials.h",
-    "src/core/lib/security/credentials/google_default/google_default_credentials.h",
-    "src/core/lib/security/credentials/iam/iam_credentials.h",
-    "src/core/lib/security/credentials/jwt/json_token.h",
-    "src/core/lib/security/credentials/jwt/jwt_credentials.h",
-    "src/core/lib/security/credentials/jwt/jwt_verifier.h",
-    "src/core/lib/security/credentials/oauth2/oauth2_credentials.h",
-    "src/core/lib/security/credentials/plugin/plugin_credentials.h",
-    "src/core/lib/security/credentials/ssl/ssl_credentials.h",
-    "src/core/lib/security/transport/auth_filters.h",
-    "src/core/lib/security/transport/secure_endpoint.h",
-    "src/core/lib/security/transport/security_connector.h",
-    "src/core/lib/security/transport/security_handshaker.h",
-    "src/core/lib/security/transport/tsi_error.h",
-    "src/core/lib/security/util/b64.h",
-    "src/core/lib/security/util/json_util.h",
-    "src/core/lib/tsi/fake_transport_security.h",
-    "src/core/lib/tsi/ssl_transport_security.h",
-    "src/core/lib/tsi/ssl_types.h",
-    "src/core/lib/tsi/transport_security.h",
-    "src/core/lib/tsi/transport_security_interface.h",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.h",
-    "src/core/lib/surface/init.c",
-    "src/core/lib/channel/channel_args.c",
-    "src/core/lib/channel/channel_stack.c",
-    "src/core/lib/channel/channel_stack_builder.c",
-    "src/core/lib/channel/compress_filter.c",
-    "src/core/lib/channel/connected_channel.c",
-    "src/core/lib/channel/deadline_filter.c",
-    "src/core/lib/channel/handshaker.c",
-    "src/core/lib/channel/http_client_filter.c",
-    "src/core/lib/channel/http_server_filter.c",
-    "src/core/lib/channel/message_size_filter.c",
-    "src/core/lib/compression/compression.c",
-    "src/core/lib/compression/message_compress.c",
-    "src/core/lib/debug/trace.c",
-    "src/core/lib/http/format_request.c",
-    "src/core/lib/http/httpcli.c",
-    "src/core/lib/http/parser.c",
-    "src/core/lib/iomgr/closure.c",
-    "src/core/lib/iomgr/combiner.c",
-    "src/core/lib/iomgr/endpoint.c",
-    "src/core/lib/iomgr/endpoint_pair_posix.c",
-    "src/core/lib/iomgr/endpoint_pair_uv.c",
-    "src/core/lib/iomgr/endpoint_pair_windows.c",
-    "src/core/lib/iomgr/error.c",
-    "src/core/lib/iomgr/ev_epoll_linux.c",
-    "src/core/lib/iomgr/ev_poll_posix.c",
-    "src/core/lib/iomgr/ev_posix.c",
-    "src/core/lib/iomgr/exec_ctx.c",
-    "src/core/lib/iomgr/executor.c",
-    "src/core/lib/iomgr/iocp_windows.c",
-    "src/core/lib/iomgr/iomgr.c",
-    "src/core/lib/iomgr/iomgr_posix.c",
-    "src/core/lib/iomgr/iomgr_uv.c",
-    "src/core/lib/iomgr/iomgr_windows.c",
-    "src/core/lib/iomgr/load_file.c",
-    "src/core/lib/iomgr/network_status_tracker.c",
-    "src/core/lib/iomgr/polling_entity.c",
-    "src/core/lib/iomgr/pollset_set_uv.c",
-    "src/core/lib/iomgr/pollset_set_windows.c",
-    "src/core/lib/iomgr/pollset_uv.c",
-    "src/core/lib/iomgr/pollset_windows.c",
-    "src/core/lib/iomgr/resolve_address_posix.c",
-    "src/core/lib/iomgr/resolve_address_uv.c",
-    "src/core/lib/iomgr/resolve_address_windows.c",
-    "src/core/lib/iomgr/resource_quota.c",
-    "src/core/lib/iomgr/sockaddr_utils.c",
-    "src/core/lib/iomgr/socket_mutator.c",
-    "src/core/lib/iomgr/socket_utils_common_posix.c",
-    "src/core/lib/iomgr/socket_utils_linux.c",
-    "src/core/lib/iomgr/socket_utils_posix.c",
-    "src/core/lib/iomgr/socket_utils_uv.c",
-    "src/core/lib/iomgr/socket_utils_windows.c",
-    "src/core/lib/iomgr/socket_windows.c",
-    "src/core/lib/iomgr/tcp_client_posix.c",
-    "src/core/lib/iomgr/tcp_client_uv.c",
-    "src/core/lib/iomgr/tcp_client_windows.c",
-    "src/core/lib/iomgr/tcp_posix.c",
-    "src/core/lib/iomgr/tcp_server_posix.c",
-    "src/core/lib/iomgr/tcp_server_uv.c",
-    "src/core/lib/iomgr/tcp_server_windows.c",
-    "src/core/lib/iomgr/tcp_uv.c",
-    "src/core/lib/iomgr/tcp_windows.c",
-    "src/core/lib/iomgr/time_averaged_stats.c",
-    "src/core/lib/iomgr/timer_generic.c",
-    "src/core/lib/iomgr/timer_heap.c",
-    "src/core/lib/iomgr/timer_uv.c",
-    "src/core/lib/iomgr/udp_server.c",
-    "src/core/lib/iomgr/unix_sockets_posix.c",
-    "src/core/lib/iomgr/unix_sockets_posix_noop.c",
-    "src/core/lib/iomgr/wakeup_fd_cv.c",
-    "src/core/lib/iomgr/wakeup_fd_eventfd.c",
-    "src/core/lib/iomgr/wakeup_fd_nospecial.c",
-    "src/core/lib/iomgr/wakeup_fd_pipe.c",
-    "src/core/lib/iomgr/wakeup_fd_posix.c",
-    "src/core/lib/iomgr/workqueue_uv.c",
-    "src/core/lib/iomgr/workqueue_windows.c",
-    "src/core/lib/json/json.c",
-    "src/core/lib/json/json_reader.c",
-    "src/core/lib/json/json_string.c",
-    "src/core/lib/json/json_writer.c",
-    "src/core/lib/slice/percent_encoding.c",
-    "src/core/lib/slice/slice.c",
-    "src/core/lib/slice/slice_buffer.c",
-    "src/core/lib/slice/slice_string_helpers.c",
-    "src/core/lib/surface/alarm.c",
-    "src/core/lib/surface/api_trace.c",
-    "src/core/lib/surface/byte_buffer.c",
-    "src/core/lib/surface/byte_buffer_reader.c",
-    "src/core/lib/surface/call.c",
-    "src/core/lib/surface/call_details.c",
-    "src/core/lib/surface/call_log_batch.c",
-    "src/core/lib/surface/channel.c",
-    "src/core/lib/surface/channel_init.c",
-    "src/core/lib/surface/channel_ping.c",
-    "src/core/lib/surface/channel_stack_type.c",
-    "src/core/lib/surface/completion_queue.c",
-    "src/core/lib/surface/event_string.c",
-    "src/core/lib/surface/lame_client.c",
-    "src/core/lib/surface/metadata_array.c",
-    "src/core/lib/surface/server.c",
-    "src/core/lib/surface/validate_metadata.c",
-    "src/core/lib/surface/version.c",
-    "src/core/lib/transport/byte_stream.c",
-    "src/core/lib/transport/connectivity_state.c",
-    "src/core/lib/transport/mdstr_hash_table.c",
-    "src/core/lib/transport/metadata.c",
-    "src/core/lib/transport/metadata_batch.c",
-    "src/core/lib/transport/pid_controller.c",
-    "src/core/lib/transport/service_config.c",
-    "src/core/lib/transport/static_metadata.c",
-    "src/core/lib/transport/timeout_encoding.c",
-    "src/core/lib/transport/transport.c",
-    "src/core/lib/transport/transport_op_string.c",
-    "src/core/ext/transport/cronet/client/secure/cronet_channel_create.c",
-    "src/core/ext/transport/cronet/transport/cronet_api_dummy.c",
-    "src/core/ext/transport/cronet/transport/cronet_transport.c",
-    "src/core/ext/transport/chttp2/client/secure/secure_channel_create.c",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.c",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_plugin.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.c",
-    "src/core/ext/transport/chttp2/transport/frame_data.c",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.c",
-    "src/core/ext/transport/chttp2/transport/frame_ping.c",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.c",
-    "src/core/ext/transport/chttp2/transport/frame_settings.c",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.c",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.c",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.c",
-    "src/core/ext/transport/chttp2/transport/hpack_table.c",
-    "src/core/ext/transport/chttp2/transport/huffsyms.c",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.c",
-    "src/core/ext/transport/chttp2/transport/parsing.c",
-    "src/core/ext/transport/chttp2/transport/status_conversion.c",
-    "src/core/ext/transport/chttp2/transport/stream_lists.c",
-    "src/core/ext/transport/chttp2/transport/stream_map.c",
-    "src/core/ext/transport/chttp2/transport/varint.c",
-    "src/core/ext/transport/chttp2/transport/writing.c",
-    "src/core/ext/transport/chttp2/alpn/alpn.c",
-    "src/core/ext/client_channel/channel_connectivity.c",
-    "src/core/ext/client_channel/client_channel.c",
-    "src/core/ext/client_channel/client_channel_factory.c",
-    "src/core/ext/client_channel/client_channel_plugin.c",
-    "src/core/ext/client_channel/connector.c",
-    "src/core/ext/client_channel/default_initial_connect_string.c",
-    "src/core/ext/client_channel/http_connect_handshaker.c",
-    "src/core/ext/client_channel/initial_connect_string.c",
-    "src/core/ext/client_channel/lb_policy.c",
-    "src/core/ext/client_channel/lb_policy_factory.c",
-    "src/core/ext/client_channel/lb_policy_registry.c",
-    "src/core/ext/client_channel/parse_address.c",
-    "src/core/ext/client_channel/resolver.c",
-    "src/core/ext/client_channel/resolver_factory.c",
-    "src/core/ext/client_channel/resolver_registry.c",
-    "src/core/ext/client_channel/subchannel.c",
-    "src/core/ext/client_channel/subchannel_index.c",
-    "src/core/ext/client_channel/uri_parser.c",
-    "src/core/lib/http/httpcli_security_connector.c",
-    "src/core/lib/security/context/security_context.c",
-    "src/core/lib/security/credentials/composite/composite_credentials.c",
-    "src/core/lib/security/credentials/credentials.c",
-    "src/core/lib/security/credentials/credentials_metadata.c",
-    "src/core/lib/security/credentials/fake/fake_credentials.c",
-    "src/core/lib/security/credentials/google_default/credentials_generic.c",
-    "src/core/lib/security/credentials/google_default/google_default_credentials.c",
-    "src/core/lib/security/credentials/iam/iam_credentials.c",
-    "src/core/lib/security/credentials/jwt/json_token.c",
-    "src/core/lib/security/credentials/jwt/jwt_credentials.c",
-    "src/core/lib/security/credentials/jwt/jwt_verifier.c",
-    "src/core/lib/security/credentials/oauth2/oauth2_credentials.c",
-    "src/core/lib/security/credentials/plugin/plugin_credentials.c",
-    "src/core/lib/security/credentials/ssl/ssl_credentials.c",
-    "src/core/lib/security/transport/client_auth_filter.c",
-    "src/core/lib/security/transport/secure_endpoint.c",
-    "src/core/lib/security/transport/security_connector.c",
-    "src/core/lib/security/transport/security_handshaker.c",
-    "src/core/lib/security/transport/server_auth_filter.c",
-    "src/core/lib/security/transport/tsi_error.c",
-    "src/core/lib/security/util/b64.c",
-    "src/core/lib/security/util/json_util.c",
-    "src/core/lib/surface/init_secure.c",
-    "src/core/lib/tsi/fake_transport_security.c",
-    "src/core/lib/tsi/ssl_transport_security.c",
-    "src/core/lib/tsi/transport_security.c",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.c",
-    "src/core/plugin_registry/grpc_cronet_plugin_registry.c",
-  ],
-  hdrs = [
-    "include/grpc/byte_buffer.h",
-    "include/grpc/byte_buffer_reader.h",
-    "include/grpc/compression.h",
-    "include/grpc/grpc.h",
-    "include/grpc/grpc_posix.h",
-    "include/grpc/grpc_security_constants.h",
-    "include/grpc/slice.h",
-    "include/grpc/slice_buffer.h",
-    "include/grpc/status.h",
-    "include/grpc/impl/codegen/byte_buffer_reader.h",
-    "include/grpc/impl/codegen/compression_types.h",
-    "include/grpc/impl/codegen/connectivity_state.h",
-    "include/grpc/impl/codegen/grpc_types.h",
-    "include/grpc/impl/codegen/propagation_bits.h",
-    "include/grpc/impl/codegen/status.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_windows.h",
-    "include/grpc/impl/codegen/gpr_types.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_windows.h",
-    "include/grpc/grpc_cronet.h",
-    "include/grpc/grpc_security.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-    "//external:libssl",
-    ":gpr",
-  ],
+grpc_cc_library(
+    name = "grpc_cronet",
+    srcs = [
+        "src/core/lib/surface/init.c",
+        "src/core/plugin_registry/grpc_cronet_plugin_registry.c",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_transport_chttp2_client_secure",
+        "grpc_transport_cronet_client_secure",
+    ],
 )
 
+grpc_cc_library(
+    name = "grpc_unsecure",
+    srcs = [
+        "src/core/lib/surface/init.c",
+        "src/core/lib/surface/init_unsecure.c",
+        "src/core/plugin_registry/grpc_unsecure_plugin_registry.c",
+    ],
+    language = "c",
+    standalone = True,
+    deps = [
+        "census",
+        "grpc_base",
+        "grpc_lb_policy_grpclb",
+        "grpc_lb_policy_pick_first",
+        "grpc_lb_policy_round_robin",
+        "grpc_load_reporting",
+        "grpc_resolver_dns_native",
+        "grpc_resolver_sockaddr",
+        "grpc_transport_chttp2_client_insecure",
+        "grpc_transport_chttp2_server_insecure",
+    ],
+)
 
+grpc_cc_library(
+    name = "grpc++",
+    srcs = [
+        "src/cpp/client/insecure_credentials.cc",
+        "src/cpp/client/secure_credentials.cc",
+        "src/cpp/common/auth_property_iterator.cc",
+        "src/cpp/common/secure_auth_context.cc",
+        "src/cpp/common/secure_channel_arguments.cc",
+        "src/cpp/common/secure_create_auth_context.cc",
+        "src/cpp/server/insecure_server_credentials.cc",
+        "src/cpp/server/secure_server_credentials.cc",
+    ],
+    hdrs = [
+        "include/grpc++/impl/codegen/core_codegen.h",
+        "src/cpp/client/secure_credentials.h",
+        "src/cpp/common/secure_auth_context.h",
+        "src/cpp/server/secure_server_credentials.h",
+    ],
+    language = "c++",
+    standalone = True,
+    deps = [
+        "gpr",
+        "grpc",
+        "grpc++_base",
+        "grpc++_codegen_base",
+        "grpc++_codegen_base_src",
+    ],
+)
 
-cc_library(
-  name = "grpc_unsecure",
-  srcs = [
-    "src/core/lib/channel/channel_args.h",
-    "src/core/lib/channel/channel_stack.h",
-    "src/core/lib/channel/channel_stack_builder.h",
-    "src/core/lib/channel/compress_filter.h",
-    "src/core/lib/channel/connected_channel.h",
-    "src/core/lib/channel/context.h",
-    "src/core/lib/channel/deadline_filter.h",
-    "src/core/lib/channel/handshaker.h",
-    "src/core/lib/channel/http_client_filter.h",
-    "src/core/lib/channel/http_server_filter.h",
-    "src/core/lib/channel/message_size_filter.h",
-    "src/core/lib/compression/algorithm_metadata.h",
-    "src/core/lib/compression/message_compress.h",
-    "src/core/lib/debug/trace.h",
-    "src/core/lib/http/format_request.h",
-    "src/core/lib/http/httpcli.h",
-    "src/core/lib/http/parser.h",
-    "src/core/lib/iomgr/closure.h",
-    "src/core/lib/iomgr/combiner.h",
-    "src/core/lib/iomgr/endpoint.h",
-    "src/core/lib/iomgr/endpoint_pair.h",
-    "src/core/lib/iomgr/error.h",
-    "src/core/lib/iomgr/ev_epoll_linux.h",
-    "src/core/lib/iomgr/ev_poll_posix.h",
-    "src/core/lib/iomgr/ev_posix.h",
-    "src/core/lib/iomgr/exec_ctx.h",
-    "src/core/lib/iomgr/executor.h",
-    "src/core/lib/iomgr/iocp_windows.h",
-    "src/core/lib/iomgr/iomgr.h",
-    "src/core/lib/iomgr/iomgr_internal.h",
-    "src/core/lib/iomgr/iomgr_posix.h",
-    "src/core/lib/iomgr/load_file.h",
-    "src/core/lib/iomgr/network_status_tracker.h",
-    "src/core/lib/iomgr/polling_entity.h",
-    "src/core/lib/iomgr/pollset.h",
-    "src/core/lib/iomgr/pollset_set.h",
-    "src/core/lib/iomgr/pollset_set_windows.h",
-    "src/core/lib/iomgr/pollset_uv.h",
-    "src/core/lib/iomgr/pollset_windows.h",
-    "src/core/lib/iomgr/port.h",
-    "src/core/lib/iomgr/resolve_address.h",
-    "src/core/lib/iomgr/resource_quota.h",
-    "src/core/lib/iomgr/sockaddr.h",
-    "src/core/lib/iomgr/sockaddr_posix.h",
-    "src/core/lib/iomgr/sockaddr_utils.h",
-    "src/core/lib/iomgr/sockaddr_windows.h",
-    "src/core/lib/iomgr/socket_mutator.h",
-    "src/core/lib/iomgr/socket_utils.h",
-    "src/core/lib/iomgr/socket_utils_posix.h",
-    "src/core/lib/iomgr/socket_windows.h",
-    "src/core/lib/iomgr/tcp_client.h",
-    "src/core/lib/iomgr/tcp_client_posix.h",
-    "src/core/lib/iomgr/tcp_posix.h",
-    "src/core/lib/iomgr/tcp_server.h",
-    "src/core/lib/iomgr/tcp_uv.h",
-    "src/core/lib/iomgr/tcp_windows.h",
-    "src/core/lib/iomgr/time_averaged_stats.h",
-    "src/core/lib/iomgr/timer.h",
-    "src/core/lib/iomgr/timer_generic.h",
-    "src/core/lib/iomgr/timer_heap.h",
-    "src/core/lib/iomgr/timer_uv.h",
-    "src/core/lib/iomgr/udp_server.h",
-    "src/core/lib/iomgr/unix_sockets_posix.h",
-    "src/core/lib/iomgr/wakeup_fd_cv.h",
-    "src/core/lib/iomgr/wakeup_fd_pipe.h",
-    "src/core/lib/iomgr/wakeup_fd_posix.h",
-    "src/core/lib/iomgr/workqueue.h",
-    "src/core/lib/iomgr/workqueue_uv.h",
-    "src/core/lib/iomgr/workqueue_windows.h",
-    "src/core/lib/json/json.h",
-    "src/core/lib/json/json_common.h",
-    "src/core/lib/json/json_reader.h",
-    "src/core/lib/json/json_writer.h",
-    "src/core/lib/slice/percent_encoding.h",
-    "src/core/lib/slice/slice_string_helpers.h",
-    "src/core/lib/surface/api_trace.h",
-    "src/core/lib/surface/call.h",
-    "src/core/lib/surface/call_test_only.h",
-    "src/core/lib/surface/channel.h",
-    "src/core/lib/surface/channel_init.h",
-    "src/core/lib/surface/channel_stack_type.h",
-    "src/core/lib/surface/completion_queue.h",
-    "src/core/lib/surface/event_string.h",
-    "src/core/lib/surface/init.h",
-    "src/core/lib/surface/lame_client.h",
-    "src/core/lib/surface/server.h",
-    "src/core/lib/transport/byte_stream.h",
-    "src/core/lib/transport/connectivity_state.h",
-    "src/core/lib/transport/mdstr_hash_table.h",
-    "src/core/lib/transport/metadata.h",
-    "src/core/lib/transport/metadata_batch.h",
-    "src/core/lib/transport/pid_controller.h",
-    "src/core/lib/transport/service_config.h",
-    "src/core/lib/transport/static_metadata.h",
-    "src/core/lib/transport/timeout_encoding.h",
-    "src/core/lib/transport/transport.h",
-    "src/core/lib/transport/transport_impl.h",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.h",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.h",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.h",
-    "src/core/ext/transport/chttp2/transport/frame.h",
-    "src/core/ext/transport/chttp2/transport/frame_data.h",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.h",
-    "src/core/ext/transport/chttp2/transport/frame_ping.h",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.h",
-    "src/core/ext/transport/chttp2/transport/frame_settings.h",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.h",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.h",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.h",
-    "src/core/ext/transport/chttp2/transport/hpack_table.h",
-    "src/core/ext/transport/chttp2/transport/http2_errors.h",
-    "src/core/ext/transport/chttp2/transport/huffsyms.h",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.h",
-    "src/core/ext/transport/chttp2/transport/internal.h",
-    "src/core/ext/transport/chttp2/transport/status_conversion.h",
-    "src/core/ext/transport/chttp2/transport/stream_map.h",
-    "src/core/ext/transport/chttp2/transport/varint.h",
-    "src/core/ext/transport/chttp2/alpn/alpn.h",
-    "src/core/ext/transport/chttp2/server/chttp2_server.h",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.h",
-    "src/core/ext/client_channel/client_channel.h",
-    "src/core/ext/client_channel/client_channel_factory.h",
-    "src/core/ext/client_channel/connector.h",
-    "src/core/ext/client_channel/http_connect_handshaker.h",
-    "src/core/ext/client_channel/initial_connect_string.h",
-    "src/core/ext/client_channel/lb_policy.h",
-    "src/core/ext/client_channel/lb_policy_factory.h",
-    "src/core/ext/client_channel/lb_policy_registry.h",
-    "src/core/ext/client_channel/parse_address.h",
-    "src/core/ext/client_channel/resolver.h",
-    "src/core/ext/client_channel/resolver_factory.h",
-    "src/core/ext/client_channel/resolver_registry.h",
-    "src/core/ext/client_channel/subchannel.h",
-    "src/core/ext/client_channel/subchannel_index.h",
-    "src/core/ext/client_channel/uri_parser.h",
-    "src/core/ext/load_reporting/load_reporting.h",
-    "src/core/ext/load_reporting/load_reporting_filter.h",
-    "src/core/ext/lb_policy/grpclb/grpclb.h",
-    "src/core/ext/lb_policy/grpclb/load_balancer_api.h",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h",
-    "src/core/ext/census/aggregation.h",
-    "src/core/ext/census/base_resources.h",
-    "src/core/ext/census/census_interface.h",
-    "src/core/ext/census/census_rpc_stats.h",
-    "src/core/ext/census/gen/census.pb.h",
-    "src/core/ext/census/gen/trace_context.pb.h",
-    "src/core/ext/census/grpc_filter.h",
-    "src/core/ext/census/mlog.h",
-    "src/core/ext/census/resource.h",
-    "src/core/ext/census/rpc_metric_id.h",
-    "src/core/ext/census/trace_context.h",
-    "src/core/lib/surface/init.c",
-    "src/core/lib/surface/init_unsecure.c",
-    "src/core/lib/channel/channel_args.c",
-    "src/core/lib/channel/channel_stack.c",
-    "src/core/lib/channel/channel_stack_builder.c",
-    "src/core/lib/channel/compress_filter.c",
-    "src/core/lib/channel/connected_channel.c",
-    "src/core/lib/channel/deadline_filter.c",
-    "src/core/lib/channel/handshaker.c",
-    "src/core/lib/channel/http_client_filter.c",
-    "src/core/lib/channel/http_server_filter.c",
-    "src/core/lib/channel/message_size_filter.c",
-    "src/core/lib/compression/compression.c",
-    "src/core/lib/compression/message_compress.c",
-    "src/core/lib/debug/trace.c",
-    "src/core/lib/http/format_request.c",
-    "src/core/lib/http/httpcli.c",
-    "src/core/lib/http/parser.c",
-    "src/core/lib/iomgr/closure.c",
-    "src/core/lib/iomgr/combiner.c",
-    "src/core/lib/iomgr/endpoint.c",
-    "src/core/lib/iomgr/endpoint_pair_posix.c",
-    "src/core/lib/iomgr/endpoint_pair_uv.c",
-    "src/core/lib/iomgr/endpoint_pair_windows.c",
-    "src/core/lib/iomgr/error.c",
-    "src/core/lib/iomgr/ev_epoll_linux.c",
-    "src/core/lib/iomgr/ev_poll_posix.c",
-    "src/core/lib/iomgr/ev_posix.c",
-    "src/core/lib/iomgr/exec_ctx.c",
-    "src/core/lib/iomgr/executor.c",
-    "src/core/lib/iomgr/iocp_windows.c",
-    "src/core/lib/iomgr/iomgr.c",
-    "src/core/lib/iomgr/iomgr_posix.c",
-    "src/core/lib/iomgr/iomgr_uv.c",
-    "src/core/lib/iomgr/iomgr_windows.c",
-    "src/core/lib/iomgr/load_file.c",
-    "src/core/lib/iomgr/network_status_tracker.c",
-    "src/core/lib/iomgr/polling_entity.c",
-    "src/core/lib/iomgr/pollset_set_uv.c",
-    "src/core/lib/iomgr/pollset_set_windows.c",
-    "src/core/lib/iomgr/pollset_uv.c",
-    "src/core/lib/iomgr/pollset_windows.c",
-    "src/core/lib/iomgr/resolve_address_posix.c",
-    "src/core/lib/iomgr/resolve_address_uv.c",
-    "src/core/lib/iomgr/resolve_address_windows.c",
-    "src/core/lib/iomgr/resource_quota.c",
-    "src/core/lib/iomgr/sockaddr_utils.c",
-    "src/core/lib/iomgr/socket_mutator.c",
-    "src/core/lib/iomgr/socket_utils_common_posix.c",
-    "src/core/lib/iomgr/socket_utils_linux.c",
-    "src/core/lib/iomgr/socket_utils_posix.c",
-    "src/core/lib/iomgr/socket_utils_uv.c",
-    "src/core/lib/iomgr/socket_utils_windows.c",
-    "src/core/lib/iomgr/socket_windows.c",
-    "src/core/lib/iomgr/tcp_client_posix.c",
-    "src/core/lib/iomgr/tcp_client_uv.c",
-    "src/core/lib/iomgr/tcp_client_windows.c",
-    "src/core/lib/iomgr/tcp_posix.c",
-    "src/core/lib/iomgr/tcp_server_posix.c",
-    "src/core/lib/iomgr/tcp_server_uv.c",
-    "src/core/lib/iomgr/tcp_server_windows.c",
-    "src/core/lib/iomgr/tcp_uv.c",
-    "src/core/lib/iomgr/tcp_windows.c",
-    "src/core/lib/iomgr/time_averaged_stats.c",
-    "src/core/lib/iomgr/timer_generic.c",
-    "src/core/lib/iomgr/timer_heap.c",
-    "src/core/lib/iomgr/timer_uv.c",
-    "src/core/lib/iomgr/udp_server.c",
-    "src/core/lib/iomgr/unix_sockets_posix.c",
-    "src/core/lib/iomgr/unix_sockets_posix_noop.c",
-    "src/core/lib/iomgr/wakeup_fd_cv.c",
-    "src/core/lib/iomgr/wakeup_fd_eventfd.c",
-    "src/core/lib/iomgr/wakeup_fd_nospecial.c",
-    "src/core/lib/iomgr/wakeup_fd_pipe.c",
-    "src/core/lib/iomgr/wakeup_fd_posix.c",
-    "src/core/lib/iomgr/workqueue_uv.c",
-    "src/core/lib/iomgr/workqueue_windows.c",
-    "src/core/lib/json/json.c",
-    "src/core/lib/json/json_reader.c",
-    "src/core/lib/json/json_string.c",
-    "src/core/lib/json/json_writer.c",
-    "src/core/lib/slice/percent_encoding.c",
-    "src/core/lib/slice/slice.c",
-    "src/core/lib/slice/slice_buffer.c",
-    "src/core/lib/slice/slice_string_helpers.c",
-    "src/core/lib/surface/alarm.c",
-    "src/core/lib/surface/api_trace.c",
-    "src/core/lib/surface/byte_buffer.c",
-    "src/core/lib/surface/byte_buffer_reader.c",
-    "src/core/lib/surface/call.c",
-    "src/core/lib/surface/call_details.c",
-    "src/core/lib/surface/call_log_batch.c",
-    "src/core/lib/surface/channel.c",
-    "src/core/lib/surface/channel_init.c",
-    "src/core/lib/surface/channel_ping.c",
-    "src/core/lib/surface/channel_stack_type.c",
-    "src/core/lib/surface/completion_queue.c",
-    "src/core/lib/surface/event_string.c",
-    "src/core/lib/surface/lame_client.c",
-    "src/core/lib/surface/metadata_array.c",
-    "src/core/lib/surface/server.c",
-    "src/core/lib/surface/validate_metadata.c",
-    "src/core/lib/surface/version.c",
-    "src/core/lib/transport/byte_stream.c",
-    "src/core/lib/transport/connectivity_state.c",
-    "src/core/lib/transport/mdstr_hash_table.c",
-    "src/core/lib/transport/metadata.c",
-    "src/core/lib/transport/metadata_batch.c",
-    "src/core/lib/transport/pid_controller.c",
-    "src/core/lib/transport/service_config.c",
-    "src/core/lib/transport/static_metadata.c",
-    "src/core/lib/transport/timeout_encoding.c",
-    "src/core/lib/transport/transport.c",
-    "src/core/lib/transport/transport_op_string.c",
-    "src/core/ext/transport/chttp2/server/insecure/server_chttp2.c",
-    "src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.c",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_plugin.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.c",
-    "src/core/ext/transport/chttp2/transport/frame_data.c",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.c",
-    "src/core/ext/transport/chttp2/transport/frame_ping.c",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.c",
-    "src/core/ext/transport/chttp2/transport/frame_settings.c",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.c",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.c",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.c",
-    "src/core/ext/transport/chttp2/transport/hpack_table.c",
-    "src/core/ext/transport/chttp2/transport/huffsyms.c",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.c",
-    "src/core/ext/transport/chttp2/transport/parsing.c",
-    "src/core/ext/transport/chttp2/transport/status_conversion.c",
-    "src/core/ext/transport/chttp2/transport/stream_lists.c",
-    "src/core/ext/transport/chttp2/transport/stream_map.c",
-    "src/core/ext/transport/chttp2/transport/varint.c",
-    "src/core/ext/transport/chttp2/transport/writing.c",
-    "src/core/ext/transport/chttp2/alpn/alpn.c",
-    "src/core/ext/transport/chttp2/server/chttp2_server.c",
-    "src/core/ext/transport/chttp2/client/insecure/channel_create.c",
-    "src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.c",
-    "src/core/ext/client_channel/channel_connectivity.c",
-    "src/core/ext/client_channel/client_channel.c",
-    "src/core/ext/client_channel/client_channel_factory.c",
-    "src/core/ext/client_channel/client_channel_plugin.c",
-    "src/core/ext/client_channel/connector.c",
-    "src/core/ext/client_channel/default_initial_connect_string.c",
-    "src/core/ext/client_channel/http_connect_handshaker.c",
-    "src/core/ext/client_channel/initial_connect_string.c",
-    "src/core/ext/client_channel/lb_policy.c",
-    "src/core/ext/client_channel/lb_policy_factory.c",
-    "src/core/ext/client_channel/lb_policy_registry.c",
-    "src/core/ext/client_channel/parse_address.c",
-    "src/core/ext/client_channel/resolver.c",
-    "src/core/ext/client_channel/resolver_factory.c",
-    "src/core/ext/client_channel/resolver_registry.c",
-    "src/core/ext/client_channel/subchannel.c",
-    "src/core/ext/client_channel/subchannel_index.c",
-    "src/core/ext/client_channel/uri_parser.c",
-    "src/core/ext/resolver/dns/native/dns_resolver.c",
-    "src/core/ext/resolver/sockaddr/sockaddr_resolver.c",
-    "src/core/ext/load_reporting/load_reporting.c",
-    "src/core/ext/load_reporting/load_reporting_filter.c",
-    "src/core/ext/lb_policy/grpclb/grpclb.c",
-    "src/core/ext/lb_policy/grpclb/load_balancer_api.c",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c",
-    "src/core/ext/lb_policy/pick_first/pick_first.c",
-    "src/core/ext/lb_policy/round_robin/round_robin.c",
-    "src/core/ext/census/base_resources.c",
-    "src/core/ext/census/context.c",
-    "src/core/ext/census/gen/census.pb.c",
-    "src/core/ext/census/gen/trace_context.pb.c",
-    "src/core/ext/census/grpc_context.c",
-    "src/core/ext/census/grpc_filter.c",
-    "src/core/ext/census/grpc_plugin.c",
-    "src/core/ext/census/initialize.c",
-    "src/core/ext/census/mlog.c",
-    "src/core/ext/census/operation.c",
-    "src/core/ext/census/placeholders.c",
-    "src/core/ext/census/resource.c",
-    "src/core/ext/census/trace_context.c",
-    "src/core/ext/census/tracing.c",
-    "src/core/plugin_registry/grpc_unsecure_plugin_registry.c",
-  ],
-  hdrs = [
-    "include/grpc/byte_buffer.h",
-    "include/grpc/byte_buffer_reader.h",
-    "include/grpc/compression.h",
-    "include/grpc/grpc.h",
-    "include/grpc/grpc_posix.h",
-    "include/grpc/grpc_security_constants.h",
-    "include/grpc/slice.h",
-    "include/grpc/slice_buffer.h",
-    "include/grpc/status.h",
-    "include/grpc/impl/codegen/byte_buffer_reader.h",
-    "include/grpc/impl/codegen/compression_types.h",
-    "include/grpc/impl/codegen/connectivity_state.h",
-    "include/grpc/impl/codegen/grpc_types.h",
-    "include/grpc/impl/codegen/propagation_bits.h",
-    "include/grpc/impl/codegen/status.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_windows.h",
-    "include/grpc/impl/codegen/gpr_types.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_windows.h",
-    "include/grpc/census.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-    ":gpr",
-    "//external:nanopb",
-  ],
-  copts = [
-    "-std=gnu99",
-  ],
+grpc_cc_library(
+    name = "grpc++_unsecure",
+    srcs = [
+        "src/cpp/client/insecure_credentials.cc",
+        "src/cpp/common/insecure_create_auth_context.cc",
+        "src/cpp/server/insecure_server_credentials.cc",
+    ],
+    language = "c++",
+    standalone = True,
+    deps = [
+        "gpr",
+        "grpc++_base",
+        "grpc++_codegen_base",
+        "grpc++_codegen_base_src",
+        "grpc_unsecure",
+    ],
 )
 
+grpc_cc_library(
+    name = "grpc_plugin_support",
+    srcs = [
+        "src/compiler/cpp_generator.cc",
+        "src/compiler/csharp_generator.cc",
+        "src/compiler/node_generator.cc",
+        "src/compiler/objective_c_generator.cc",
+        "src/compiler/php_generator.cc",
+        "src/compiler/python_generator.cc",
+        "src/compiler/ruby_generator.cc",
+    ],
+    hdrs = [
+        "src/compiler/config.h",
+        "src/compiler/cpp_generator.h",
+        "src/compiler/cpp_generator_helpers.h",
+        "src/compiler/csharp_generator.h",
+        "src/compiler/csharp_generator_helpers.h",
+        "src/compiler/generator_helpers.h",
+        "src/compiler/node_generator.h",
+        "src/compiler/node_generator_helpers.h",
+        "src/compiler/objective_c_generator.h",
+        "src/compiler/objective_c_generator_helpers.h",
+        "src/compiler/php_generator.h",
+        "src/compiler/php_generator_helpers.h",
+        "src/compiler/python_generator.h",
+        "src/compiler/ruby_generator.h",
+        "src/compiler/ruby_generator_helpers-inl.h",
+        "src/compiler/ruby_generator_map-inl.h",
+        "src/compiler/ruby_generator_string-inl.h",
+    ],
+    external_deps = [
+        "protobuf_clib",
+    ],
+    language = "c++",
+    deps = [
+        "grpc++_config_proto",
+    ],
+)
 
+grpc_proto_plugin(
+    name = "grpc_cpp_plugin",
+    srcs = ["src/compiler/cpp_plugin.cc"],
+    deps = [":grpc_plugin_support"],
+)
 
-cc_library(
-  name = "grpc++",
-  srcs = [
-    "include/grpc++/impl/codegen/core_codegen.h",
-    "src/cpp/client/secure_credentials.h",
-    "src/cpp/common/secure_auth_context.h",
-    "src/cpp/server/secure_server_credentials.h",
-    "src/cpp/client/create_channel_internal.h",
-    "src/cpp/common/channel_filter.h",
-    "src/cpp/server/dynamic_thread_pool.h",
-    "src/cpp/server/thread_pool_interface.h",
-    "src/cpp/thread_manager/thread_manager.h",
-    "src/cpp/client/insecure_credentials.cc",
-    "src/cpp/client/secure_credentials.cc",
-    "src/cpp/common/auth_property_iterator.cc",
-    "src/cpp/common/secure_auth_context.cc",
-    "src/cpp/common/secure_channel_arguments.cc",
-    "src/cpp/common/secure_create_auth_context.cc",
-    "src/cpp/server/insecure_server_credentials.cc",
-    "src/cpp/server/secure_server_credentials.cc",
-    "src/cpp/client/channel_cc.cc",
-    "src/cpp/client/client_context.cc",
-    "src/cpp/client/create_channel.cc",
-    "src/cpp/client/create_channel_internal.cc",
-    "src/cpp/client/create_channel_posix.cc",
-    "src/cpp/client/credentials_cc.cc",
-    "src/cpp/client/generic_stub.cc",
-    "src/cpp/common/channel_arguments.cc",
-    "src/cpp/common/channel_filter.cc",
-    "src/cpp/common/completion_queue_cc.cc",
-    "src/cpp/common/core_codegen.cc",
-    "src/cpp/common/resource_quota_cc.cc",
-    "src/cpp/common/rpc_method.cc",
-    "src/cpp/common/version_cc.cc",
-    "src/cpp/server/async_generic_service.cc",
-    "src/cpp/server/create_default_thread_pool.cc",
-    "src/cpp/server/dynamic_thread_pool.cc",
-    "src/cpp/server/server_builder.cc",
-    "src/cpp/server/server_cc.cc",
-    "src/cpp/server/server_context.cc",
-    "src/cpp/server/server_credentials.cc",
-    "src/cpp/server/server_posix.cc",
-    "src/cpp/thread_manager/thread_manager.cc",
-    "src/cpp/util/byte_buffer_cc.cc",
-    "src/cpp/util/slice_cc.cc",
-    "src/cpp/util/status.cc",
-    "src/cpp/util/string_ref.cc",
-    "src/cpp/util/time_cc.cc",
-    "src/cpp/codegen/codegen_init.cc",
-  ],
-  hdrs = [
-    "include/grpc++/alarm.h",
-    "include/grpc++/channel.h",
-    "include/grpc++/client_context.h",
-    "include/grpc++/completion_queue.h",
-    "include/grpc++/create_channel.h",
-    "include/grpc++/create_channel_posix.h",
-    "include/grpc++/generic/async_generic_service.h",
-    "include/grpc++/generic/generic_stub.h",
-    "include/grpc++/grpc++.h",
-    "include/grpc++/impl/call.h",
-    "include/grpc++/impl/client_unary_call.h",
-    "include/grpc++/impl/codegen/core_codegen.h",
-    "include/grpc++/impl/grpc_library.h",
-    "include/grpc++/impl/method_handler_impl.h",
-    "include/grpc++/impl/rpc_method.h",
-    "include/grpc++/impl/rpc_service_method.h",
-    "include/grpc++/impl/serialization_traits.h",
-    "include/grpc++/impl/server_builder_option.h",
-    "include/grpc++/impl/server_builder_plugin.h",
-    "include/grpc++/impl/server_initializer.h",
-    "include/grpc++/impl/service_type.h",
-    "include/grpc++/resource_quota.h",
-    "include/grpc++/security/auth_context.h",
-    "include/grpc++/security/auth_metadata_processor.h",
-    "include/grpc++/security/credentials.h",
-    "include/grpc++/security/server_credentials.h",
-    "include/grpc++/server.h",
-    "include/grpc++/server_builder.h",
-    "include/grpc++/server_context.h",
-    "include/grpc++/server_posix.h",
-    "include/grpc++/support/async_stream.h",
-    "include/grpc++/support/async_unary_call.h",
-    "include/grpc++/support/byte_buffer.h",
-    "include/grpc++/support/channel_arguments.h",
-    "include/grpc++/support/config.h",
-    "include/grpc++/support/slice.h",
-    "include/grpc++/support/status.h",
-    "include/grpc++/support/status_code_enum.h",
-    "include/grpc++/support/string_ref.h",
-    "include/grpc++/support/stub_options.h",
-    "include/grpc++/support/sync_stream.h",
-    "include/grpc++/support/time.h",
-    "include/grpc++/impl/codegen/async_stream.h",
-    "include/grpc++/impl/codegen/async_unary_call.h",
-    "include/grpc++/impl/codegen/call.h",
-    "include/grpc++/impl/codegen/call_hook.h",
-    "include/grpc++/impl/codegen/channel_interface.h",
-    "include/grpc++/impl/codegen/client_context.h",
-    "include/grpc++/impl/codegen/client_unary_call.h",
-    "include/grpc++/impl/codegen/completion_queue.h",
-    "include/grpc++/impl/codegen/completion_queue_tag.h",
-    "include/grpc++/impl/codegen/config.h",
-    "include/grpc++/impl/codegen/core_codegen_interface.h",
-    "include/grpc++/impl/codegen/create_auth_context.h",
-    "include/grpc++/impl/codegen/grpc_library.h",
-    "include/grpc++/impl/codegen/method_handler_impl.h",
-    "include/grpc++/impl/codegen/rpc_method.h",
-    "include/grpc++/impl/codegen/rpc_service_method.h",
-    "include/grpc++/impl/codegen/security/auth_context.h",
-    "include/grpc++/impl/codegen/serialization_traits.h",
-    "include/grpc++/impl/codegen/server_context.h",
-    "include/grpc++/impl/codegen/server_interface.h",
-    "include/grpc++/impl/codegen/service_type.h",
-    "include/grpc++/impl/codegen/status.h",
-    "include/grpc++/impl/codegen/status_code_enum.h",
-    "include/grpc++/impl/codegen/status_helper.h",
-    "include/grpc++/impl/codegen/string_ref.h",
-    "include/grpc++/impl/codegen/stub_options.h",
-    "include/grpc++/impl/codegen/sync_stream.h",
-    "include/grpc++/impl/codegen/time.h",
-    "include/grpc/impl/codegen/byte_buffer_reader.h",
-    "include/grpc/impl/codegen/compression_types.h",
-    "include/grpc/impl/codegen/connectivity_state.h",
-    "include/grpc/impl/codegen/grpc_types.h",
-    "include/grpc/impl/codegen/propagation_bits.h",
-    "include/grpc/impl/codegen/status.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_windows.h",
-    "include/grpc/impl/codegen/gpr_types.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_windows.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-    "//external:libssl",
-    "//external:protobuf_clib",
-    ":grpc",
-  ],
+grpc_proto_plugin(
+    name = "grpc_csharp_plugin",
+    srcs = ["src/compiler/csharp_plugin.cc"],
+    deps = [":grpc_plugin_support"],
 )
 
+grpc_proto_plugin(
+    name = "grpc_node_plugin",
+    srcs = ["src/compiler/node_plugin.cc"],
+    deps = [":grpc_plugin_support"],
+)
 
+grpc_proto_plugin(
+    name = "grpc_objective_c_plugin",
+    srcs = ["src/compiler/objective_c_plugin.cc"],
+    deps = [":grpc_plugin_support"],
+)
 
-cc_library(
-  name = "grpc++_cronet",
-  srcs = [
-    "src/cpp/client/create_channel_internal.h",
-    "src/cpp/common/channel_filter.h",
-    "src/cpp/server/dynamic_thread_pool.h",
-    "src/cpp/server/thread_pool_interface.h",
-    "src/cpp/thread_manager/thread_manager.h",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.h",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.h",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.h",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.h",
-    "src/core/ext/transport/chttp2/transport/frame.h",
-    "src/core/ext/transport/chttp2/transport/frame_data.h",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.h",
-    "src/core/ext/transport/chttp2/transport/frame_ping.h",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.h",
-    "src/core/ext/transport/chttp2/transport/frame_settings.h",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.h",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.h",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.h",
-    "src/core/ext/transport/chttp2/transport/hpack_table.h",
-    "src/core/ext/transport/chttp2/transport/http2_errors.h",
-    "src/core/ext/transport/chttp2/transport/huffsyms.h",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.h",
-    "src/core/ext/transport/chttp2/transport/internal.h",
-    "src/core/ext/transport/chttp2/transport/status_conversion.h",
-    "src/core/ext/transport/chttp2/transport/stream_map.h",
-    "src/core/ext/transport/chttp2/transport/varint.h",
-    "src/core/lib/channel/channel_args.h",
-    "src/core/lib/channel/channel_stack.h",
-    "src/core/lib/channel/channel_stack_builder.h",
-    "src/core/lib/channel/compress_filter.h",
-    "src/core/lib/channel/connected_channel.h",
-    "src/core/lib/channel/context.h",
-    "src/core/lib/channel/deadline_filter.h",
-    "src/core/lib/channel/handshaker.h",
-    "src/core/lib/channel/http_client_filter.h",
-    "src/core/lib/channel/http_server_filter.h",
-    "src/core/lib/channel/message_size_filter.h",
-    "src/core/lib/compression/algorithm_metadata.h",
-    "src/core/lib/compression/message_compress.h",
-    "src/core/lib/debug/trace.h",
-    "src/core/lib/http/format_request.h",
-    "src/core/lib/http/httpcli.h",
-    "src/core/lib/http/parser.h",
-    "src/core/lib/iomgr/closure.h",
-    "src/core/lib/iomgr/combiner.h",
-    "src/core/lib/iomgr/endpoint.h",
-    "src/core/lib/iomgr/endpoint_pair.h",
-    "src/core/lib/iomgr/error.h",
-    "src/core/lib/iomgr/ev_epoll_linux.h",
-    "src/core/lib/iomgr/ev_poll_posix.h",
-    "src/core/lib/iomgr/ev_posix.h",
-    "src/core/lib/iomgr/exec_ctx.h",
-    "src/core/lib/iomgr/executor.h",
-    "src/core/lib/iomgr/iocp_windows.h",
-    "src/core/lib/iomgr/iomgr.h",
-    "src/core/lib/iomgr/iomgr_internal.h",
-    "src/core/lib/iomgr/iomgr_posix.h",
-    "src/core/lib/iomgr/load_file.h",
-    "src/core/lib/iomgr/network_status_tracker.h",
-    "src/core/lib/iomgr/polling_entity.h",
-    "src/core/lib/iomgr/pollset.h",
-    "src/core/lib/iomgr/pollset_set.h",
-    "src/core/lib/iomgr/pollset_set_windows.h",
-    "src/core/lib/iomgr/pollset_uv.h",
-    "src/core/lib/iomgr/pollset_windows.h",
-    "src/core/lib/iomgr/port.h",
-    "src/core/lib/iomgr/resolve_address.h",
-    "src/core/lib/iomgr/resource_quota.h",
-    "src/core/lib/iomgr/sockaddr.h",
-    "src/core/lib/iomgr/sockaddr_posix.h",
-    "src/core/lib/iomgr/sockaddr_utils.h",
-    "src/core/lib/iomgr/sockaddr_windows.h",
-    "src/core/lib/iomgr/socket_mutator.h",
-    "src/core/lib/iomgr/socket_utils.h",
-    "src/core/lib/iomgr/socket_utils_posix.h",
-    "src/core/lib/iomgr/socket_windows.h",
-    "src/core/lib/iomgr/tcp_client.h",
-    "src/core/lib/iomgr/tcp_client_posix.h",
-    "src/core/lib/iomgr/tcp_posix.h",
-    "src/core/lib/iomgr/tcp_server.h",
-    "src/core/lib/iomgr/tcp_uv.h",
-    "src/core/lib/iomgr/tcp_windows.h",
-    "src/core/lib/iomgr/time_averaged_stats.h",
-    "src/core/lib/iomgr/timer.h",
-    "src/core/lib/iomgr/timer_generic.h",
-    "src/core/lib/iomgr/timer_heap.h",
-    "src/core/lib/iomgr/timer_uv.h",
-    "src/core/lib/iomgr/udp_server.h",
-    "src/core/lib/iomgr/unix_sockets_posix.h",
-    "src/core/lib/iomgr/wakeup_fd_cv.h",
-    "src/core/lib/iomgr/wakeup_fd_pipe.h",
-    "src/core/lib/iomgr/wakeup_fd_posix.h",
-    "src/core/lib/iomgr/workqueue.h",
-    "src/core/lib/iomgr/workqueue_uv.h",
-    "src/core/lib/iomgr/workqueue_windows.h",
-    "src/core/lib/json/json.h",
-    "src/core/lib/json/json_common.h",
-    "src/core/lib/json/json_reader.h",
-    "src/core/lib/json/json_writer.h",
-    "src/core/lib/slice/percent_encoding.h",
-    "src/core/lib/slice/slice_string_helpers.h",
-    "src/core/lib/surface/api_trace.h",
-    "src/core/lib/surface/call.h",
-    "src/core/lib/surface/call_test_only.h",
-    "src/core/lib/surface/channel.h",
-    "src/core/lib/surface/channel_init.h",
-    "src/core/lib/surface/channel_stack_type.h",
-    "src/core/lib/surface/completion_queue.h",
-    "src/core/lib/surface/event_string.h",
-    "src/core/lib/surface/init.h",
-    "src/core/lib/surface/lame_client.h",
-    "src/core/lib/surface/server.h",
-    "src/core/lib/transport/byte_stream.h",
-    "src/core/lib/transport/connectivity_state.h",
-    "src/core/lib/transport/mdstr_hash_table.h",
-    "src/core/lib/transport/metadata.h",
-    "src/core/lib/transport/metadata_batch.h",
-    "src/core/lib/transport/pid_controller.h",
-    "src/core/lib/transport/service_config.h",
-    "src/core/lib/transport/static_metadata.h",
-    "src/core/lib/transport/timeout_encoding.h",
-    "src/core/lib/transport/transport.h",
-    "src/core/lib/transport/transport_impl.h",
-    "src/core/ext/transport/chttp2/alpn/alpn.h",
-    "src/core/ext/client_channel/client_channel.h",
-    "src/core/ext/client_channel/client_channel_factory.h",
-    "src/core/ext/client_channel/connector.h",
-    "src/core/ext/client_channel/http_connect_handshaker.h",
-    "src/core/ext/client_channel/initial_connect_string.h",
-    "src/core/ext/client_channel/lb_policy.h",
-    "src/core/ext/client_channel/lb_policy_factory.h",
-    "src/core/ext/client_channel/lb_policy_registry.h",
-    "src/core/ext/client_channel/parse_address.h",
-    "src/core/ext/client_channel/resolver.h",
-    "src/core/ext/client_channel/resolver_factory.h",
-    "src/core/ext/client_channel/resolver_registry.h",
-    "src/core/ext/client_channel/subchannel.h",
-    "src/core/ext/client_channel/subchannel_index.h",
-    "src/core/ext/client_channel/uri_parser.h",
-    "src/core/ext/transport/chttp2/server/chttp2_server.h",
-    "src/core/ext/census/aggregation.h",
-    "src/core/ext/census/base_resources.h",
-    "src/core/ext/census/census_interface.h",
-    "src/core/ext/census/census_rpc_stats.h",
-    "src/core/ext/census/gen/census.pb.h",
-    "src/core/ext/census/gen/trace_context.pb.h",
-    "src/core/ext/census/grpc_filter.h",
-    "src/core/ext/census/mlog.h",
-    "src/core/ext/census/resource.h",
-    "src/core/ext/census/rpc_metric_id.h",
-    "src/core/ext/census/trace_context.h",
-    "src/cpp/client/cronet_credentials.cc",
-    "src/cpp/client/insecure_credentials.cc",
-    "src/cpp/common/insecure_create_auth_context.cc",
-    "src/cpp/server/insecure_server_credentials.cc",
-    "src/cpp/client/channel_cc.cc",
-    "src/cpp/client/client_context.cc",
-    "src/cpp/client/create_channel.cc",
-    "src/cpp/client/create_channel_internal.cc",
-    "src/cpp/client/create_channel_posix.cc",
-    "src/cpp/client/credentials_cc.cc",
-    "src/cpp/client/generic_stub.cc",
-    "src/cpp/common/channel_arguments.cc",
-    "src/cpp/common/channel_filter.cc",
-    "src/cpp/common/completion_queue_cc.cc",
-    "src/cpp/common/core_codegen.cc",
-    "src/cpp/common/resource_quota_cc.cc",
-    "src/cpp/common/rpc_method.cc",
-    "src/cpp/common/version_cc.cc",
-    "src/cpp/server/async_generic_service.cc",
-    "src/cpp/server/create_default_thread_pool.cc",
-    "src/cpp/server/dynamic_thread_pool.cc",
-    "src/cpp/server/server_builder.cc",
-    "src/cpp/server/server_cc.cc",
-    "src/cpp/server/server_context.cc",
-    "src/cpp/server/server_credentials.cc",
-    "src/cpp/server/server_posix.cc",
-    "src/cpp/thread_manager/thread_manager.cc",
-    "src/cpp/util/byte_buffer_cc.cc",
-    "src/cpp/util/slice_cc.cc",
-    "src/cpp/util/status.cc",
-    "src/cpp/util/string_ref.cc",
-    "src/cpp/util/time_cc.cc",
-    "src/cpp/codegen/codegen_init.cc",
-    "src/core/ext/transport/chttp2/client/insecure/channel_create.c",
-    "src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.c",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.c",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_plugin.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.c",
-    "src/core/ext/transport/chttp2/transport/frame_data.c",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.c",
-    "src/core/ext/transport/chttp2/transport/frame_ping.c",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.c",
-    "src/core/ext/transport/chttp2/transport/frame_settings.c",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.c",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.c",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.c",
-    "src/core/ext/transport/chttp2/transport/hpack_table.c",
-    "src/core/ext/transport/chttp2/transport/huffsyms.c",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.c",
-    "src/core/ext/transport/chttp2/transport/parsing.c",
-    "src/core/ext/transport/chttp2/transport/status_conversion.c",
-    "src/core/ext/transport/chttp2/transport/stream_lists.c",
-    "src/core/ext/transport/chttp2/transport/stream_map.c",
-    "src/core/ext/transport/chttp2/transport/varint.c",
-    "src/core/ext/transport/chttp2/transport/writing.c",
-    "src/core/lib/channel/channel_args.c",
-    "src/core/lib/channel/channel_stack.c",
-    "src/core/lib/channel/channel_stack_builder.c",
-    "src/core/lib/channel/compress_filter.c",
-    "src/core/lib/channel/connected_channel.c",
-    "src/core/lib/channel/deadline_filter.c",
-    "src/core/lib/channel/handshaker.c",
-    "src/core/lib/channel/http_client_filter.c",
-    "src/core/lib/channel/http_server_filter.c",
-    "src/core/lib/channel/message_size_filter.c",
-    "src/core/lib/compression/compression.c",
-    "src/core/lib/compression/message_compress.c",
-    "src/core/lib/debug/trace.c",
-    "src/core/lib/http/format_request.c",
-    "src/core/lib/http/httpcli.c",
-    "src/core/lib/http/parser.c",
-    "src/core/lib/iomgr/closure.c",
-    "src/core/lib/iomgr/combiner.c",
-    "src/core/lib/iomgr/endpoint.c",
-    "src/core/lib/iomgr/endpoint_pair_posix.c",
-    "src/core/lib/iomgr/endpoint_pair_uv.c",
-    "src/core/lib/iomgr/endpoint_pair_windows.c",
-    "src/core/lib/iomgr/error.c",
-    "src/core/lib/iomgr/ev_epoll_linux.c",
-    "src/core/lib/iomgr/ev_poll_posix.c",
-    "src/core/lib/iomgr/ev_posix.c",
-    "src/core/lib/iomgr/exec_ctx.c",
-    "src/core/lib/iomgr/executor.c",
-    "src/core/lib/iomgr/iocp_windows.c",
-    "src/core/lib/iomgr/iomgr.c",
-    "src/core/lib/iomgr/iomgr_posix.c",
-    "src/core/lib/iomgr/iomgr_uv.c",
-    "src/core/lib/iomgr/iomgr_windows.c",
-    "src/core/lib/iomgr/load_file.c",
-    "src/core/lib/iomgr/network_status_tracker.c",
-    "src/core/lib/iomgr/polling_entity.c",
-    "src/core/lib/iomgr/pollset_set_uv.c",
-    "src/core/lib/iomgr/pollset_set_windows.c",
-    "src/core/lib/iomgr/pollset_uv.c",
-    "src/core/lib/iomgr/pollset_windows.c",
-    "src/core/lib/iomgr/resolve_address_posix.c",
-    "src/core/lib/iomgr/resolve_address_uv.c",
-    "src/core/lib/iomgr/resolve_address_windows.c",
-    "src/core/lib/iomgr/resource_quota.c",
-    "src/core/lib/iomgr/sockaddr_utils.c",
-    "src/core/lib/iomgr/socket_mutator.c",
-    "src/core/lib/iomgr/socket_utils_common_posix.c",
-    "src/core/lib/iomgr/socket_utils_linux.c",
-    "src/core/lib/iomgr/socket_utils_posix.c",
-    "src/core/lib/iomgr/socket_utils_uv.c",
-    "src/core/lib/iomgr/socket_utils_windows.c",
-    "src/core/lib/iomgr/socket_windows.c",
-    "src/core/lib/iomgr/tcp_client_posix.c",
-    "src/core/lib/iomgr/tcp_client_uv.c",
-    "src/core/lib/iomgr/tcp_client_windows.c",
-    "src/core/lib/iomgr/tcp_posix.c",
-    "src/core/lib/iomgr/tcp_server_posix.c",
-    "src/core/lib/iomgr/tcp_server_uv.c",
-    "src/core/lib/iomgr/tcp_server_windows.c",
-    "src/core/lib/iomgr/tcp_uv.c",
-    "src/core/lib/iomgr/tcp_windows.c",
-    "src/core/lib/iomgr/time_averaged_stats.c",
-    "src/core/lib/iomgr/timer_generic.c",
-    "src/core/lib/iomgr/timer_heap.c",
-    "src/core/lib/iomgr/timer_uv.c",
-    "src/core/lib/iomgr/udp_server.c",
-    "src/core/lib/iomgr/unix_sockets_posix.c",
-    "src/core/lib/iomgr/unix_sockets_posix_noop.c",
-    "src/core/lib/iomgr/wakeup_fd_cv.c",
-    "src/core/lib/iomgr/wakeup_fd_eventfd.c",
-    "src/core/lib/iomgr/wakeup_fd_nospecial.c",
-    "src/core/lib/iomgr/wakeup_fd_pipe.c",
-    "src/core/lib/iomgr/wakeup_fd_posix.c",
-    "src/core/lib/iomgr/workqueue_uv.c",
-    "src/core/lib/iomgr/workqueue_windows.c",
-    "src/core/lib/json/json.c",
-    "src/core/lib/json/json_reader.c",
-    "src/core/lib/json/json_string.c",
-    "src/core/lib/json/json_writer.c",
-    "src/core/lib/slice/percent_encoding.c",
-    "src/core/lib/slice/slice.c",
-    "src/core/lib/slice/slice_buffer.c",
-    "src/core/lib/slice/slice_string_helpers.c",
-    "src/core/lib/surface/alarm.c",
-    "src/core/lib/surface/api_trace.c",
-    "src/core/lib/surface/byte_buffer.c",
-    "src/core/lib/surface/byte_buffer_reader.c",
-    "src/core/lib/surface/call.c",
-    "src/core/lib/surface/call_details.c",
-    "src/core/lib/surface/call_log_batch.c",
-    "src/core/lib/surface/channel.c",
-    "src/core/lib/surface/channel_init.c",
-    "src/core/lib/surface/channel_ping.c",
-    "src/core/lib/surface/channel_stack_type.c",
-    "src/core/lib/surface/completion_queue.c",
-    "src/core/lib/surface/event_string.c",
-    "src/core/lib/surface/lame_client.c",
-    "src/core/lib/surface/metadata_array.c",
-    "src/core/lib/surface/server.c",
-    "src/core/lib/surface/validate_metadata.c",
-    "src/core/lib/surface/version.c",
-    "src/core/lib/transport/byte_stream.c",
-    "src/core/lib/transport/connectivity_state.c",
-    "src/core/lib/transport/mdstr_hash_table.c",
-    "src/core/lib/transport/metadata.c",
-    "src/core/lib/transport/metadata_batch.c",
-    "src/core/lib/transport/pid_controller.c",
-    "src/core/lib/transport/service_config.c",
-    "src/core/lib/transport/static_metadata.c",
-    "src/core/lib/transport/timeout_encoding.c",
-    "src/core/lib/transport/transport.c",
-    "src/core/lib/transport/transport_op_string.c",
-    "src/core/ext/transport/chttp2/alpn/alpn.c",
-    "src/core/ext/client_channel/channel_connectivity.c",
-    "src/core/ext/client_channel/client_channel.c",
-    "src/core/ext/client_channel/client_channel_factory.c",
-    "src/core/ext/client_channel/client_channel_plugin.c",
-    "src/core/ext/client_channel/connector.c",
-    "src/core/ext/client_channel/default_initial_connect_string.c",
-    "src/core/ext/client_channel/http_connect_handshaker.c",
-    "src/core/ext/client_channel/initial_connect_string.c",
-    "src/core/ext/client_channel/lb_policy.c",
-    "src/core/ext/client_channel/lb_policy_factory.c",
-    "src/core/ext/client_channel/lb_policy_registry.c",
-    "src/core/ext/client_channel/parse_address.c",
-    "src/core/ext/client_channel/resolver.c",
-    "src/core/ext/client_channel/resolver_factory.c",
-    "src/core/ext/client_channel/resolver_registry.c",
-    "src/core/ext/client_channel/subchannel.c",
-    "src/core/ext/client_channel/subchannel_index.c",
-    "src/core/ext/client_channel/uri_parser.c",
-    "src/core/ext/transport/chttp2/server/insecure/server_chttp2.c",
-    "src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c",
-    "src/core/ext/transport/chttp2/server/chttp2_server.c",
-    "src/core/ext/census/base_resources.c",
-    "src/core/ext/census/context.c",
-    "src/core/ext/census/gen/census.pb.c",
-    "src/core/ext/census/gen/trace_context.pb.c",
-    "src/core/ext/census/grpc_context.c",
-    "src/core/ext/census/grpc_filter.c",
-    "src/core/ext/census/grpc_plugin.c",
-    "src/core/ext/census/initialize.c",
-    "src/core/ext/census/mlog.c",
-    "src/core/ext/census/operation.c",
-    "src/core/ext/census/placeholders.c",
-    "src/core/ext/census/resource.c",
-    "src/core/ext/census/trace_context.c",
-    "src/core/ext/census/tracing.c",
-  ],
-  hdrs = [
-    "include/grpc++/alarm.h",
-    "include/grpc++/channel.h",
-    "include/grpc++/client_context.h",
-    "include/grpc++/completion_queue.h",
-    "include/grpc++/create_channel.h",
-    "include/grpc++/create_channel_posix.h",
-    "include/grpc++/generic/async_generic_service.h",
-    "include/grpc++/generic/generic_stub.h",
-    "include/grpc++/grpc++.h",
-    "include/grpc++/impl/call.h",
-    "include/grpc++/impl/client_unary_call.h",
-    "include/grpc++/impl/codegen/core_codegen.h",
-    "include/grpc++/impl/grpc_library.h",
-    "include/grpc++/impl/method_handler_impl.h",
-    "include/grpc++/impl/rpc_method.h",
-    "include/grpc++/impl/rpc_service_method.h",
-    "include/grpc++/impl/serialization_traits.h",
-    "include/grpc++/impl/server_builder_option.h",
-    "include/grpc++/impl/server_builder_plugin.h",
-    "include/grpc++/impl/server_initializer.h",
-    "include/grpc++/impl/service_type.h",
-    "include/grpc++/resource_quota.h",
-    "include/grpc++/security/auth_context.h",
-    "include/grpc++/security/auth_metadata_processor.h",
-    "include/grpc++/security/credentials.h",
-    "include/grpc++/security/server_credentials.h",
-    "include/grpc++/server.h",
-    "include/grpc++/server_builder.h",
-    "include/grpc++/server_context.h",
-    "include/grpc++/server_posix.h",
-    "include/grpc++/support/async_stream.h",
-    "include/grpc++/support/async_unary_call.h",
-    "include/grpc++/support/byte_buffer.h",
-    "include/grpc++/support/channel_arguments.h",
-    "include/grpc++/support/config.h",
-    "include/grpc++/support/slice.h",
-    "include/grpc++/support/status.h",
-    "include/grpc++/support/status_code_enum.h",
-    "include/grpc++/support/string_ref.h",
-    "include/grpc++/support/stub_options.h",
-    "include/grpc++/support/sync_stream.h",
-    "include/grpc++/support/time.h",
-    "include/grpc++/impl/codegen/async_stream.h",
-    "include/grpc++/impl/codegen/async_unary_call.h",
-    "include/grpc++/impl/codegen/call.h",
-    "include/grpc++/impl/codegen/call_hook.h",
-    "include/grpc++/impl/codegen/channel_interface.h",
-    "include/grpc++/impl/codegen/client_context.h",
-    "include/grpc++/impl/codegen/client_unary_call.h",
-    "include/grpc++/impl/codegen/completion_queue.h",
-    "include/grpc++/impl/codegen/completion_queue_tag.h",
-    "include/grpc++/impl/codegen/config.h",
-    "include/grpc++/impl/codegen/core_codegen_interface.h",
-    "include/grpc++/impl/codegen/create_auth_context.h",
-    "include/grpc++/impl/codegen/grpc_library.h",
-    "include/grpc++/impl/codegen/method_handler_impl.h",
-    "include/grpc++/impl/codegen/rpc_method.h",
-    "include/grpc++/impl/codegen/rpc_service_method.h",
-    "include/grpc++/impl/codegen/security/auth_context.h",
-    "include/grpc++/impl/codegen/serialization_traits.h",
-    "include/grpc++/impl/codegen/server_context.h",
-    "include/grpc++/impl/codegen/server_interface.h",
-    "include/grpc++/impl/codegen/service_type.h",
-    "include/grpc++/impl/codegen/status.h",
-    "include/grpc++/impl/codegen/status_code_enum.h",
-    "include/grpc++/impl/codegen/status_helper.h",
-    "include/grpc++/impl/codegen/string_ref.h",
-    "include/grpc++/impl/codegen/stub_options.h",
-    "include/grpc++/impl/codegen/sync_stream.h",
-    "include/grpc++/impl/codegen/time.h",
-    "include/grpc/impl/codegen/byte_buffer_reader.h",
-    "include/grpc/impl/codegen/compression_types.h",
-    "include/grpc/impl/codegen/connectivity_state.h",
-    "include/grpc/impl/codegen/grpc_types.h",
-    "include/grpc/impl/codegen/propagation_bits.h",
-    "include/grpc/impl/codegen/status.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_windows.h",
-    "include/grpc/impl/codegen/gpr_types.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_windows.h",
-    "include/grpc/byte_buffer.h",
-    "include/grpc/byte_buffer_reader.h",
-    "include/grpc/compression.h",
-    "include/grpc/grpc.h",
-    "include/grpc/grpc_posix.h",
-    "include/grpc/grpc_security_constants.h",
-    "include/grpc/slice.h",
-    "include/grpc/slice_buffer.h",
-    "include/grpc/status.h",
-    "include/grpc/census.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-    "//external:libssl",
-    ":gpr",
-    ":grpc_cronet",
-    "//external:nanopb",
-  ],
+grpc_proto_plugin(
+    name = "grpc_php_plugin",
+    srcs = ["src/compiler/php_plugin.cc"],
+    deps = [":grpc_plugin_support"],
 )
 
+grpc_proto_plugin(
+    name = "grpc_python_plugin",
+    srcs = ["src/compiler/python_plugin.cc"],
+    deps = [":grpc_plugin_support"],
+)
 
+grpc_proto_plugin(
+    name = "grpc_ruby_plugin",
+    srcs = ["src/compiler/ruby_plugin.cc"],
+    deps = [":grpc_plugin_support"],
+)
 
-cc_library(
-  name = "grpc++_reflection",
-  srcs = [
-    "src/cpp/ext/proto_server_reflection.h",
-    "src/cpp/ext/proto_server_reflection.cc",
-    "src/cpp/ext/proto_server_reflection_plugin.cc",
-    "src/proto/grpc/reflection/v1alpha/reflection.proto",
-  ],
-  hdrs = [
-    "include/grpc++/ext/proto_server_reflection_plugin.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-    ":grpc++",
-  ],
+grpc_cc_library(
+    name = "grpc_csharp_ext",
+    srcs = [
+        "src/csharp/ext/grpc_csharp_ext.c",
+    ],
+    language = "csharp",
+    deps = [
+        "gpr",
+        "grpc",
+    ],
 )
 
+grpc_cc_library(
+    name = "census",
+    srcs = [
+        "src/core/ext/census/base_resources.c",
+        "src/core/ext/census/context.c",
+        "src/core/ext/census/gen/census.pb.c",
+        "src/core/ext/census/gen/trace_context.pb.c",
+        "src/core/ext/census/grpc_context.c",
+        "src/core/ext/census/grpc_filter.c",
+        "src/core/ext/census/grpc_plugin.c",
+        "src/core/ext/census/initialize.c",
+        "src/core/ext/census/mlog.c",
+        "src/core/ext/census/operation.c",
+        "src/core/ext/census/placeholders.c",
+        "src/core/ext/census/resource.c",
+        "src/core/ext/census/trace_context.c",
+        "src/core/ext/census/tracing.c",
+    ],
+    hdrs = [
+        "src/core/ext/census/aggregation.h",
+        "src/core/ext/census/base_resources.h",
+        "src/core/ext/census/census_interface.h",
+        "src/core/ext/census/census_rpc_stats.h",
+        "src/core/ext/census/gen/census.pb.h",
+        "src/core/ext/census/gen/trace_context.pb.h",
+        "src/core/ext/census/grpc_filter.h",
+        "src/core/ext/census/mlog.h",
+        "src/core/ext/census/resource.h",
+        "src/core/ext/census/rpc_metric_id.h",
+        "src/core/ext/census/trace_context.h",
+    ],
+    external_deps = [
+        "nanopb",
+    ],
+    language = "c",
+    public_hdrs = [
+        "include/grpc/census.h",
+    ],
+    deps = [
+        "grpc_base",
+    ],
+)
 
+grpc_cc_library(
+    name = "gpr_base",
+    srcs = [
+        "src/core/lib/profiling/basic_timers.c",
+        "src/core/lib/profiling/stap_timers.c",
+        "src/core/lib/support/alloc.c",
+        "src/core/lib/support/avl.c",
+        "src/core/lib/support/backoff.c",
+        "src/core/lib/support/cmdline.c",
+        "src/core/lib/support/cpu_iphone.c",
+        "src/core/lib/support/cpu_linux.c",
+        "src/core/lib/support/cpu_posix.c",
+        "src/core/lib/support/cpu_windows.c",
+        "src/core/lib/support/env_linux.c",
+        "src/core/lib/support/env_posix.c",
+        "src/core/lib/support/env_windows.c",
+        "src/core/lib/support/histogram.c",
+        "src/core/lib/support/host_port.c",
+        "src/core/lib/support/log.c",
+        "src/core/lib/support/log_android.c",
+        "src/core/lib/support/log_linux.c",
+        "src/core/lib/support/log_posix.c",
+        "src/core/lib/support/log_windows.c",
+        "src/core/lib/support/mpscq.c",
+        "src/core/lib/support/murmur_hash.c",
+        "src/core/lib/support/stack_lockfree.c",
+        "src/core/lib/support/string.c",
+        "src/core/lib/support/string_posix.c",
+        "src/core/lib/support/string_util_windows.c",
+        "src/core/lib/support/string_windows.c",
+        "src/core/lib/support/subprocess_posix.c",
+        "src/core/lib/support/subprocess_windows.c",
+        "src/core/lib/support/sync.c",
+        "src/core/lib/support/sync_posix.c",
+        "src/core/lib/support/sync_windows.c",
+        "src/core/lib/support/thd.c",
+        "src/core/lib/support/thd_posix.c",
+        "src/core/lib/support/thd_windows.c",
+        "src/core/lib/support/time.c",
+        "src/core/lib/support/time_posix.c",
+        "src/core/lib/support/time_precise.c",
+        "src/core/lib/support/time_windows.c",
+        "src/core/lib/support/tls_pthread.c",
+        "src/core/lib/support/tmpfile_msys.c",
+        "src/core/lib/support/tmpfile_posix.c",
+        "src/core/lib/support/tmpfile_windows.c",
+        "src/core/lib/support/wrap_memcpy.c",
+    ],
+    hdrs = [
+        "src/core/lib/profiling/timers.h",
+        "src/core/lib/support/backoff.h",
+        "src/core/lib/support/block_annotate.h",
+        "src/core/lib/support/env.h",
+        "src/core/lib/support/mpscq.h",
+        "src/core/lib/support/murmur_hash.h",
+        "src/core/lib/support/stack_lockfree.h",
+        "src/core/lib/support/string.h",
+        "src/core/lib/support/string_windows.h",
+        "src/core/lib/support/thd_internal.h",
+        "src/core/lib/support/time_precise.h",
+        "src/core/lib/support/tmpfile.h",
+    ],
+    language = "c",
+    public_hdrs = [
+        "include/grpc/support/alloc.h",
+        "include/grpc/support/atm.h",
+        "include/grpc/support/atm_gcc_atomic.h",
+        "include/grpc/support/atm_gcc_sync.h",
+        "include/grpc/support/atm_windows.h",
+        "include/grpc/support/avl.h",
+        "include/grpc/support/cmdline.h",
+        "include/grpc/support/cpu.h",
+        "include/grpc/support/histogram.h",
+        "include/grpc/support/host_port.h",
+        "include/grpc/support/log.h",
+        "include/grpc/support/log_windows.h",
+        "include/grpc/support/port_platform.h",
+        "include/grpc/support/string_util.h",
+        "include/grpc/support/subprocess.h",
+        "include/grpc/support/sync.h",
+        "include/grpc/support/sync_generic.h",
+        "include/grpc/support/sync_posix.h",
+        "include/grpc/support/sync_windows.h",
+        "include/grpc/support/thd.h",
+        "include/grpc/support/time.h",
+        "include/grpc/support/tls.h",
+        "include/grpc/support/tls_gcc.h",
+        "include/grpc/support/tls_msvc.h",
+        "include/grpc/support/tls_pthread.h",
+        "include/grpc/support/useful.h",
+    ],
+    deps = [
+        "gpr_codegen",
+    ],
+)
 
-cc_library(
-  name = "grpc++_unsecure",
-  srcs = [
-    "src/cpp/client/create_channel_internal.h",
-    "src/cpp/common/channel_filter.h",
-    "src/cpp/server/dynamic_thread_pool.h",
-    "src/cpp/server/thread_pool_interface.h",
-    "src/cpp/thread_manager/thread_manager.h",
-    "src/cpp/client/insecure_credentials.cc",
-    "src/cpp/common/insecure_create_auth_context.cc",
-    "src/cpp/server/insecure_server_credentials.cc",
-    "src/cpp/client/channel_cc.cc",
-    "src/cpp/client/client_context.cc",
-    "src/cpp/client/create_channel.cc",
-    "src/cpp/client/create_channel_internal.cc",
-    "src/cpp/client/create_channel_posix.cc",
-    "src/cpp/client/credentials_cc.cc",
-    "src/cpp/client/generic_stub.cc",
-    "src/cpp/common/channel_arguments.cc",
-    "src/cpp/common/channel_filter.cc",
-    "src/cpp/common/completion_queue_cc.cc",
-    "src/cpp/common/core_codegen.cc",
-    "src/cpp/common/resource_quota_cc.cc",
-    "src/cpp/common/rpc_method.cc",
-    "src/cpp/common/version_cc.cc",
-    "src/cpp/server/async_generic_service.cc",
-    "src/cpp/server/create_default_thread_pool.cc",
-    "src/cpp/server/dynamic_thread_pool.cc",
-    "src/cpp/server/server_builder.cc",
-    "src/cpp/server/server_cc.cc",
-    "src/cpp/server/server_context.cc",
-    "src/cpp/server/server_credentials.cc",
-    "src/cpp/server/server_posix.cc",
-    "src/cpp/thread_manager/thread_manager.cc",
-    "src/cpp/util/byte_buffer_cc.cc",
-    "src/cpp/util/slice_cc.cc",
-    "src/cpp/util/status.cc",
-    "src/cpp/util/string_ref.cc",
-    "src/cpp/util/time_cc.cc",
-    "src/cpp/codegen/codegen_init.cc",
-  ],
-  hdrs = [
-    "include/grpc++/alarm.h",
-    "include/grpc++/channel.h",
-    "include/grpc++/client_context.h",
-    "include/grpc++/completion_queue.h",
-    "include/grpc++/create_channel.h",
-    "include/grpc++/create_channel_posix.h",
-    "include/grpc++/generic/async_generic_service.h",
-    "include/grpc++/generic/generic_stub.h",
-    "include/grpc++/grpc++.h",
-    "include/grpc++/impl/call.h",
-    "include/grpc++/impl/client_unary_call.h",
-    "include/grpc++/impl/codegen/core_codegen.h",
-    "include/grpc++/impl/grpc_library.h",
-    "include/grpc++/impl/method_handler_impl.h",
-    "include/grpc++/impl/rpc_method.h",
-    "include/grpc++/impl/rpc_service_method.h",
-    "include/grpc++/impl/serialization_traits.h",
-    "include/grpc++/impl/server_builder_option.h",
-    "include/grpc++/impl/server_builder_plugin.h",
-    "include/grpc++/impl/server_initializer.h",
-    "include/grpc++/impl/service_type.h",
-    "include/grpc++/resource_quota.h",
-    "include/grpc++/security/auth_context.h",
-    "include/grpc++/security/auth_metadata_processor.h",
-    "include/grpc++/security/credentials.h",
-    "include/grpc++/security/server_credentials.h",
-    "include/grpc++/server.h",
-    "include/grpc++/server_builder.h",
-    "include/grpc++/server_context.h",
-    "include/grpc++/server_posix.h",
-    "include/grpc++/support/async_stream.h",
-    "include/grpc++/support/async_unary_call.h",
-    "include/grpc++/support/byte_buffer.h",
-    "include/grpc++/support/channel_arguments.h",
-    "include/grpc++/support/config.h",
-    "include/grpc++/support/slice.h",
-    "include/grpc++/support/status.h",
-    "include/grpc++/support/status_code_enum.h",
-    "include/grpc++/support/string_ref.h",
-    "include/grpc++/support/stub_options.h",
-    "include/grpc++/support/sync_stream.h",
-    "include/grpc++/support/time.h",
-    "include/grpc++/impl/codegen/async_stream.h",
-    "include/grpc++/impl/codegen/async_unary_call.h",
-    "include/grpc++/impl/codegen/call.h",
-    "include/grpc++/impl/codegen/call_hook.h",
-    "include/grpc++/impl/codegen/channel_interface.h",
-    "include/grpc++/impl/codegen/client_context.h",
-    "include/grpc++/impl/codegen/client_unary_call.h",
-    "include/grpc++/impl/codegen/completion_queue.h",
-    "include/grpc++/impl/codegen/completion_queue_tag.h",
-    "include/grpc++/impl/codegen/config.h",
-    "include/grpc++/impl/codegen/core_codegen_interface.h",
-    "include/grpc++/impl/codegen/create_auth_context.h",
-    "include/grpc++/impl/codegen/grpc_library.h",
-    "include/grpc++/impl/codegen/method_handler_impl.h",
-    "include/grpc++/impl/codegen/rpc_method.h",
-    "include/grpc++/impl/codegen/rpc_service_method.h",
-    "include/grpc++/impl/codegen/security/auth_context.h",
-    "include/grpc++/impl/codegen/serialization_traits.h",
-    "include/grpc++/impl/codegen/server_context.h",
-    "include/grpc++/impl/codegen/server_interface.h",
-    "include/grpc++/impl/codegen/service_type.h",
-    "include/grpc++/impl/codegen/status.h",
-    "include/grpc++/impl/codegen/status_code_enum.h",
-    "include/grpc++/impl/codegen/status_helper.h",
-    "include/grpc++/impl/codegen/string_ref.h",
-    "include/grpc++/impl/codegen/stub_options.h",
-    "include/grpc++/impl/codegen/sync_stream.h",
-    "include/grpc++/impl/codegen/time.h",
-    "include/grpc/impl/codegen/byte_buffer_reader.h",
-    "include/grpc/impl/codegen/compression_types.h",
-    "include/grpc/impl/codegen/connectivity_state.h",
-    "include/grpc/impl/codegen/grpc_types.h",
-    "include/grpc/impl/codegen/propagation_bits.h",
-    "include/grpc/impl/codegen/status.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_windows.h",
-    "include/grpc/impl/codegen/gpr_types.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_windows.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-    "//external:protobuf_clib",
-    ":gpr",
-    ":grpc_unsecure",
-  ],
+grpc_cc_library(
+    name = "gpr_codegen",
+    language = "c",
+    public_hdrs = [
+        "include/grpc/impl/codegen/atm.h",
+        "include/grpc/impl/codegen/atm_gcc_atomic.h",
+        "include/grpc/impl/codegen/atm_gcc_sync.h",
+        "include/grpc/impl/codegen/atm_windows.h",
+        "include/grpc/impl/codegen/gpr_slice.h",
+        "include/grpc/impl/codegen/gpr_types.h",
+        "include/grpc/impl/codegen/port_platform.h",
+        "include/grpc/impl/codegen/slice.h",
+        "include/grpc/impl/codegen/sync.h",
+        "include/grpc/impl/codegen/sync_generic.h",
+        "include/grpc/impl/codegen/sync_posix.h",
+        "include/grpc/impl/codegen/sync_windows.h",
+    ],
 )
 
+grpc_cc_library(
+    name = "grpc_base",
+    srcs = [
+        "src/core/lib/channel/channel_args.c",
+        "src/core/lib/channel/channel_stack.c",
+        "src/core/lib/channel/channel_stack_builder.c",
+        "src/core/lib/channel/compress_filter.c",
+        "src/core/lib/channel/connected_channel.c",
+        "src/core/lib/channel/deadline_filter.c",
+        "src/core/lib/channel/handshaker.c",
+        "src/core/lib/channel/handshaker_factory.c",
+        "src/core/lib/channel/handshaker_registry.c",
+        "src/core/lib/channel/http_client_filter.c",
+        "src/core/lib/channel/http_server_filter.c",
+        "src/core/lib/channel/message_size_filter.c",
+        "src/core/lib/compression/compression.c",
+        "src/core/lib/compression/message_compress.c",
+        "src/core/lib/debug/trace.c",
+        "src/core/lib/http/format_request.c",
+        "src/core/lib/http/httpcli.c",
+        "src/core/lib/http/parser.c",
+        "src/core/lib/iomgr/closure.c",
+        "src/core/lib/iomgr/combiner.c",
+        "src/core/lib/iomgr/endpoint.c",
+        "src/core/lib/iomgr/endpoint_pair_posix.c",
+        "src/core/lib/iomgr/endpoint_pair_uv.c",
+        "src/core/lib/iomgr/endpoint_pair_windows.c",
+        "src/core/lib/iomgr/error.c",
+        "src/core/lib/iomgr/ev_epoll_linux.c",
+        "src/core/lib/iomgr/ev_poll_posix.c",
+        "src/core/lib/iomgr/ev_posix.c",
+        "src/core/lib/iomgr/exec_ctx.c",
+        "src/core/lib/iomgr/executor.c",
+        "src/core/lib/iomgr/iocp_windows.c",
+        "src/core/lib/iomgr/iomgr.c",
+        "src/core/lib/iomgr/iomgr_posix.c",
+        "src/core/lib/iomgr/iomgr_uv.c",
+        "src/core/lib/iomgr/iomgr_windows.c",
+        "src/core/lib/iomgr/load_file.c",
+        "src/core/lib/iomgr/network_status_tracker.c",
+        "src/core/lib/iomgr/polling_entity.c",
+        "src/core/lib/iomgr/pollset_set_uv.c",
+        "src/core/lib/iomgr/pollset_set_windows.c",
+        "src/core/lib/iomgr/pollset_uv.c",
+        "src/core/lib/iomgr/pollset_windows.c",
+        "src/core/lib/iomgr/resolve_address_posix.c",
+        "src/core/lib/iomgr/resolve_address_uv.c",
+        "src/core/lib/iomgr/resolve_address_windows.c",
+        "src/core/lib/iomgr/resource_quota.c",
+        "src/core/lib/iomgr/sockaddr_utils.c",
+        "src/core/lib/iomgr/socket_mutator.c",
+        "src/core/lib/iomgr/socket_utils_common_posix.c",
+        "src/core/lib/iomgr/socket_utils_linux.c",
+        "src/core/lib/iomgr/socket_utils_posix.c",
+        "src/core/lib/iomgr/socket_utils_uv.c",
+        "src/core/lib/iomgr/socket_utils_windows.c",
+        "src/core/lib/iomgr/socket_windows.c",
+        "src/core/lib/iomgr/tcp_client_posix.c",
+        "src/core/lib/iomgr/tcp_client_uv.c",
+        "src/core/lib/iomgr/tcp_client_windows.c",
+        "src/core/lib/iomgr/tcp_posix.c",
+        "src/core/lib/iomgr/tcp_server_posix.c",
+        "src/core/lib/iomgr/tcp_server_uv.c",
+        "src/core/lib/iomgr/tcp_server_windows.c",
+        "src/core/lib/iomgr/tcp_uv.c",
+        "src/core/lib/iomgr/tcp_windows.c",
+        "src/core/lib/iomgr/time_averaged_stats.c",
+        "src/core/lib/iomgr/timer_generic.c",
+        "src/core/lib/iomgr/timer_heap.c",
+        "src/core/lib/iomgr/timer_uv.c",
+        "src/core/lib/iomgr/udp_server.c",
+        "src/core/lib/iomgr/unix_sockets_posix.c",
+        "src/core/lib/iomgr/unix_sockets_posix_noop.c",
+        "src/core/lib/iomgr/wakeup_fd_cv.c",
+        "src/core/lib/iomgr/wakeup_fd_eventfd.c",
+        "src/core/lib/iomgr/wakeup_fd_nospecial.c",
+        "src/core/lib/iomgr/wakeup_fd_pipe.c",
+        "src/core/lib/iomgr/wakeup_fd_posix.c",
+        "src/core/lib/iomgr/workqueue_uv.c",
+        "src/core/lib/iomgr/workqueue_windows.c",
+        "src/core/lib/json/json.c",
+        "src/core/lib/json/json_reader.c",
+        "src/core/lib/json/json_string.c",
+        "src/core/lib/json/json_writer.c",
+        "src/core/lib/slice/percent_encoding.c",
+        "src/core/lib/slice/slice.c",
+        "src/core/lib/slice/slice_buffer.c",
+        "src/core/lib/slice/slice_string_helpers.c",
+        "src/core/lib/surface/alarm.c",
+        "src/core/lib/surface/api_trace.c",
+        "src/core/lib/surface/byte_buffer.c",
+        "src/core/lib/surface/byte_buffer_reader.c",
+        "src/core/lib/surface/call.c",
+        "src/core/lib/surface/call_details.c",
+        "src/core/lib/surface/call_log_batch.c",
+        "src/core/lib/surface/channel.c",
+        "src/core/lib/surface/channel_init.c",
+        "src/core/lib/surface/channel_ping.c",
+        "src/core/lib/surface/channel_stack_type.c",
+        "src/core/lib/surface/completion_queue.c",
+        "src/core/lib/surface/event_string.c",
+        "src/core/lib/surface/lame_client.c",
+        "src/core/lib/surface/metadata_array.c",
+        "src/core/lib/surface/server.c",
+        "src/core/lib/surface/validate_metadata.c",
+        "src/core/lib/surface/version.c",
+        "src/core/lib/transport/byte_stream.c",
+        "src/core/lib/transport/connectivity_state.c",
+        "src/core/lib/transport/mdstr_hash_table.c",
+        "src/core/lib/transport/metadata.c",
+        "src/core/lib/transport/metadata_batch.c",
+        "src/core/lib/transport/pid_controller.c",
+        "src/core/lib/transport/service_config.c",
+        "src/core/lib/transport/static_metadata.c",
+        "src/core/lib/transport/timeout_encoding.c",
+        "src/core/lib/transport/transport.c",
+        "src/core/lib/transport/transport_op_string.c",
+    ],
+    hdrs = [
+        "src/core/lib/channel/channel_args.h",
+        "src/core/lib/channel/channel_stack.h",
+        "src/core/lib/channel/channel_stack_builder.h",
+        "src/core/lib/channel/compress_filter.h",
+        "src/core/lib/channel/connected_channel.h",
+        "src/core/lib/channel/context.h",
+        "src/core/lib/channel/deadline_filter.h",
+        "src/core/lib/channel/handshaker.h",
+        "src/core/lib/channel/handshaker_factory.h",
+        "src/core/lib/channel/handshaker_registry.h",
+        "src/core/lib/channel/http_client_filter.h",
+        "src/core/lib/channel/http_server_filter.h",
+        "src/core/lib/channel/message_size_filter.h",
+        "src/core/lib/compression/algorithm_metadata.h",
+        "src/core/lib/compression/message_compress.h",
+        "src/core/lib/debug/trace.h",
+        "src/core/lib/http/format_request.h",
+        "src/core/lib/http/httpcli.h",
+        "src/core/lib/http/parser.h",
+        "src/core/lib/iomgr/closure.h",
+        "src/core/lib/iomgr/combiner.h",
+        "src/core/lib/iomgr/endpoint.h",
+        "src/core/lib/iomgr/endpoint_pair.h",
+        "src/core/lib/iomgr/error.h",
+        "src/core/lib/iomgr/ev_epoll_linux.h",
+        "src/core/lib/iomgr/ev_poll_posix.h",
+        "src/core/lib/iomgr/ev_posix.h",
+        "src/core/lib/iomgr/exec_ctx.h",
+        "src/core/lib/iomgr/executor.h",
+        "src/core/lib/iomgr/iocp_windows.h",
+        "src/core/lib/iomgr/iomgr.h",
+        "src/core/lib/iomgr/iomgr_internal.h",
+        "src/core/lib/iomgr/iomgr_posix.h",
+        "src/core/lib/iomgr/load_file.h",
+        "src/core/lib/iomgr/network_status_tracker.h",
+        "src/core/lib/iomgr/polling_entity.h",
+        "src/core/lib/iomgr/pollset.h",
+        "src/core/lib/iomgr/pollset_set.h",
+        "src/core/lib/iomgr/pollset_set_windows.h",
+        "src/core/lib/iomgr/pollset_uv.h",
+        "src/core/lib/iomgr/pollset_windows.h",
+        "src/core/lib/iomgr/port.h",
+        "src/core/lib/iomgr/resolve_address.h",
+        "src/core/lib/iomgr/resource_quota.h",
+        "src/core/lib/iomgr/sockaddr.h",
+        "src/core/lib/iomgr/sockaddr_posix.h",
+        "src/core/lib/iomgr/sockaddr_utils.h",
+        "src/core/lib/iomgr/sockaddr_windows.h",
+        "src/core/lib/iomgr/socket_mutator.h",
+        "src/core/lib/iomgr/socket_utils.h",
+        "src/core/lib/iomgr/socket_utils_posix.h",
+        "src/core/lib/iomgr/socket_windows.h",
+        "src/core/lib/iomgr/tcp_client.h",
+        "src/core/lib/iomgr/tcp_client_posix.h",
+        "src/core/lib/iomgr/tcp_posix.h",
+        "src/core/lib/iomgr/tcp_server.h",
+        "src/core/lib/iomgr/tcp_uv.h",
+        "src/core/lib/iomgr/tcp_windows.h",
+        "src/core/lib/iomgr/time_averaged_stats.h",
+        "src/core/lib/iomgr/timer.h",
+        "src/core/lib/iomgr/timer_generic.h",
+        "src/core/lib/iomgr/timer_heap.h",
+        "src/core/lib/iomgr/timer_uv.h",
+        "src/core/lib/iomgr/udp_server.h",
+        "src/core/lib/iomgr/unix_sockets_posix.h",
+        "src/core/lib/iomgr/wakeup_fd_cv.h",
+        "src/core/lib/iomgr/wakeup_fd_pipe.h",
+        "src/core/lib/iomgr/wakeup_fd_posix.h",
+        "src/core/lib/iomgr/workqueue.h",
+        "src/core/lib/iomgr/workqueue_uv.h",
+        "src/core/lib/iomgr/workqueue_windows.h",
+        "src/core/lib/json/json.h",
+        "src/core/lib/json/json_common.h",
+        "src/core/lib/json/json_reader.h",
+        "src/core/lib/json/json_writer.h",
+        "src/core/lib/slice/percent_encoding.h",
+        "src/core/lib/slice/slice_internal.h",
+        "src/core/lib/slice/slice_string_helpers.h",
+        "src/core/lib/surface/api_trace.h",
+        "src/core/lib/surface/call.h",
+        "src/core/lib/surface/call_test_only.h",
+        "src/core/lib/surface/channel.h",
+        "src/core/lib/surface/channel_init.h",
+        "src/core/lib/surface/channel_stack_type.h",
+        "src/core/lib/surface/completion_queue.h",
+        "src/core/lib/surface/event_string.h",
+        "src/core/lib/surface/init.h",
+        "src/core/lib/surface/lame_client.h",
+        "src/core/lib/surface/server.h",
+        "src/core/lib/transport/byte_stream.h",
+        "src/core/lib/transport/connectivity_state.h",
+        "src/core/lib/transport/mdstr_hash_table.h",
+        "src/core/lib/transport/metadata.h",
+        "src/core/lib/transport/metadata_batch.h",
+        "src/core/lib/transport/pid_controller.h",
+        "src/core/lib/transport/service_config.h",
+        "src/core/lib/transport/static_metadata.h",
+        "src/core/lib/transport/timeout_encoding.h",
+        "src/core/lib/transport/transport.h",
+        "src/core/lib/transport/transport_impl.h",
+    ],
+    external_deps = [
+        "zlib",
+    ],
+    language = "c",
+    public_hdrs = [
+        "include/grpc/byte_buffer.h",
+        "include/grpc/byte_buffer_reader.h",
+        "include/grpc/compression.h",
+        "include/grpc/grpc.h",
+        "include/grpc/grpc_posix.h",
+        "include/grpc/grpc_security_constants.h",
+        "include/grpc/slice.h",
+        "include/grpc/slice_buffer.h",
+        "include/grpc/status.h",
+    ],
+    deps = [
+        "gpr_base",
+        "grpc_codegen",
+    ],
+)
 
+grpc_cc_library(
+    name = "grpc_client_channel",
+    language = "c",
+    srcs = [
+        "src/core/ext/client_channel/channel_connectivity.c",
+        "src/core/ext/client_channel/client_channel.c",
+        "src/core/ext/client_channel/client_channel_factory.c",
+        "src/core/ext/client_channel/client_channel_plugin.c",
+        "src/core/ext/client_channel/connector.c",
+        "src/core/ext/client_channel/default_initial_connect_string.c",
+        "src/core/ext/client_channel/http_connect_handshaker.c",
+        "src/core/ext/client_channel/initial_connect_string.c",
+        "src/core/ext/client_channel/lb_policy.c",
+        "src/core/ext/client_channel/lb_policy_factory.c",
+        "src/core/ext/client_channel/lb_policy_registry.c",
+        "src/core/ext/client_channel/parse_address.c",
+        "src/core/ext/client_channel/resolver.c",
+        "src/core/ext/client_channel/resolver_factory.c",
+        "src/core/ext/client_channel/resolver_registry.c",
+        "src/core/ext/client_channel/subchannel.c",
+        "src/core/ext/client_channel/subchannel_index.c",
+        "src/core/ext/client_channel/uri_parser.c",
+    ],
+    hdrs = [
+        "src/core/ext/client_channel/client_channel.h",
+        "src/core/ext/client_channel/client_channel_factory.h",
+        "src/core/ext/client_channel/connector.h",
+        "src/core/ext/client_channel/http_connect_handshaker.h",
+        "src/core/ext/client_channel/initial_connect_string.h",
+        "src/core/ext/client_channel/lb_policy.h",
+        "src/core/ext/client_channel/lb_policy_factory.h",
+        "src/core/ext/client_channel/lb_policy_registry.h",
+        "src/core/ext/client_channel/parse_address.h",
+        "src/core/ext/client_channel/resolver.h",
+        "src/core/ext/client_channel/resolver_factory.h",
+        "src/core/ext/client_channel/resolver_registry.h",
+        "src/core/ext/client_channel/subchannel.h",
+        "src/core/ext/client_channel/subchannel_index.h",
+        "src/core/ext/client_channel/uri_parser.h",
+    ],
+    deps = [
+        "grpc_base",
+    ],
+)
 
-cc_library(
-  name = "grpc_plugin_support",
-  srcs = [
-    "src/compiler/config.h",
-    "src/compiler/cpp_generator.h",
-    "src/compiler/cpp_generator_helpers.h",
-    "src/compiler/csharp_generator.h",
-    "src/compiler/csharp_generator_helpers.h",
-    "src/compiler/generator_helpers.h",
-    "src/compiler/node_generator.h",
-    "src/compiler/node_generator_helpers.h",
-    "src/compiler/objective_c_generator.h",
-    "src/compiler/objective_c_generator_helpers.h",
-    "src/compiler/php_generator.h",
-    "src/compiler/php_generator_helpers.h",
-    "src/compiler/python_generator.h",
-    "src/compiler/ruby_generator.h",
-    "src/compiler/ruby_generator_helpers-inl.h",
-    "src/compiler/ruby_generator_map-inl.h",
-    "src/compiler/ruby_generator_string-inl.h",
-    "src/compiler/cpp_generator.cc",
-    "src/compiler/csharp_generator.cc",
-    "src/compiler/node_generator.cc",
-    "src/compiler/objective_c_generator.cc",
-    "src/compiler/php_generator.cc",
-    "src/compiler/python_generator.cc",
-    "src/compiler/ruby_generator.cc",
-  ],
-  hdrs = [
-    "include/grpc++/impl/codegen/config_protobuf.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-    "//external:protobuf_compiler",
-  ],
+grpc_cc_library(
+    name = "grpc_codegen",
+    language = "c",
+    public_hdrs = [
+        "include/grpc/impl/codegen/byte_buffer_reader.h",
+        "include/grpc/impl/codegen/compression_types.h",
+        "include/grpc/impl/codegen/connectivity_state.h",
+        "include/grpc/impl/codegen/exec_ctx_fwd.h",
+        "include/grpc/impl/codegen/grpc_types.h",
+        "include/grpc/impl/codegen/propagation_bits.h",
+        "include/grpc/impl/codegen/status.h",
+    ],
+    deps = [
+        "gpr_codegen",
+    ],
 )
 
+grpc_cc_library(
+    name = "grpc_lb_policy_grpclb",
+    srcs = [
+        "src/core/ext/lb_policy/grpclb/grpclb.c",
+        "src/core/ext/lb_policy/grpclb/load_balancer_api.c",
+        "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c",
+    ],
+    hdrs = [
+        "src/core/ext/lb_policy/grpclb/grpclb.h",
+        "src/core/ext/lb_policy/grpclb/load_balancer_api.h",
+        "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h",
+    ],
+    external_deps = [
+        "nanopb",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_client_channel",
+    ],
+)
 
+grpc_cc_library(
+    name = "grpc_lb_policy_pick_first",
+    srcs = [
+        "src/core/ext/lb_policy/pick_first/pick_first.c",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_client_channel",
+    ],
+)
 
-cc_library(
-  name = "grpc_csharp_ext",
-  srcs = [
-    "src/csharp/ext/grpc_csharp_ext.c",
-  ],
-  hdrs = [
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-    ":grpc",
-    ":gpr",
-  ],
+grpc_cc_library(
+    name = "grpc_lb_policy_round_robin",
+    srcs = [
+        "src/core/ext/lb_policy/round_robin/round_robin.c",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_client_channel",
+    ],
 )
 
+grpc_cc_library(
+    name = "grpc_load_reporting",
+    srcs = [
+        "src/core/ext/load_reporting/load_reporting.c",
+        "src/core/ext/load_reporting/load_reporting_filter.c",
+    ],
+    hdrs = [
+        "src/core/ext/load_reporting/load_reporting.h",
+        "src/core/ext/load_reporting/load_reporting_filter.h",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+    ],
+)
 
+grpc_cc_library(
+    name = "grpc_resolver_dns_native",
+    srcs = [
+        "src/core/ext/resolver/dns/native/dns_resolver.c",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_client_channel",
+    ],
+)
 
+grpc_cc_library(
+    name = "grpc_resolver_sockaddr",
+    srcs = [
+        "src/core/ext/resolver/sockaddr/sockaddr_resolver.c",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_client_channel",
+    ],
+)
 
-objc_library(
-  name = "gpr_objc",
-  srcs = [
-    "src/core/lib/profiling/basic_timers.c",
-    "src/core/lib/profiling/stap_timers.c",
-    "src/core/lib/support/alloc.c",
-    "src/core/lib/support/avl.c",
-    "src/core/lib/support/backoff.c",
-    "src/core/lib/support/cmdline.c",
-    "src/core/lib/support/cpu_iphone.c",
-    "src/core/lib/support/cpu_linux.c",
-    "src/core/lib/support/cpu_posix.c",
-    "src/core/lib/support/cpu_windows.c",
-    "src/core/lib/support/env_linux.c",
-    "src/core/lib/support/env_posix.c",
-    "src/core/lib/support/env_windows.c",
-    "src/core/lib/support/histogram.c",
-    "src/core/lib/support/host_port.c",
-    "src/core/lib/support/log.c",
-    "src/core/lib/support/log_android.c",
-    "src/core/lib/support/log_linux.c",
-    "src/core/lib/support/log_posix.c",
-    "src/core/lib/support/log_windows.c",
-    "src/core/lib/support/mpscq.c",
-    "src/core/lib/support/murmur_hash.c",
-    "src/core/lib/support/stack_lockfree.c",
-    "src/core/lib/support/string.c",
-    "src/core/lib/support/string_posix.c",
-    "src/core/lib/support/string_util_windows.c",
-    "src/core/lib/support/string_windows.c",
-    "src/core/lib/support/subprocess_posix.c",
-    "src/core/lib/support/subprocess_windows.c",
-    "src/core/lib/support/sync.c",
-    "src/core/lib/support/sync_posix.c",
-    "src/core/lib/support/sync_windows.c",
-    "src/core/lib/support/thd.c",
-    "src/core/lib/support/thd_posix.c",
-    "src/core/lib/support/thd_windows.c",
-    "src/core/lib/support/time.c",
-    "src/core/lib/support/time_posix.c",
-    "src/core/lib/support/time_precise.c",
-    "src/core/lib/support/time_windows.c",
-    "src/core/lib/support/tls_pthread.c",
-    "src/core/lib/support/tmpfile_msys.c",
-    "src/core/lib/support/tmpfile_posix.c",
-    "src/core/lib/support/tmpfile_windows.c",
-    "src/core/lib/support/wrap_memcpy.c",
-  ],
-  hdrs = [
-    "include/grpc/support/alloc.h",
-    "include/grpc/support/atm.h",
-    "include/grpc/support/atm_gcc_atomic.h",
-    "include/grpc/support/atm_gcc_sync.h",
-    "include/grpc/support/atm_windows.h",
-    "include/grpc/support/avl.h",
-    "include/grpc/support/cmdline.h",
-    "include/grpc/support/cpu.h",
-    "include/grpc/support/histogram.h",
-    "include/grpc/support/host_port.h",
-    "include/grpc/support/log.h",
-    "include/grpc/support/log_windows.h",
-    "include/grpc/support/port_platform.h",
-    "include/grpc/support/string_util.h",
-    "include/grpc/support/subprocess.h",
-    "include/grpc/support/sync.h",
-    "include/grpc/support/sync_generic.h",
-    "include/grpc/support/sync_posix.h",
-    "include/grpc/support/sync_windows.h",
-    "include/grpc/support/thd.h",
-    "include/grpc/support/time.h",
-    "include/grpc/support/tls.h",
-    "include/grpc/support/tls_gcc.h",
-    "include/grpc/support/tls_msvc.h",
-    "include/grpc/support/tls_pthread.h",
-    "include/grpc/support/useful.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_windows.h",
-    "include/grpc/impl/codegen/gpr_types.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_windows.h",
-    "src/core/lib/profiling/timers.h",
-    "src/core/lib/support/backoff.h",
-    "src/core/lib/support/block_annotate.h",
-    "src/core/lib/support/env.h",
-    "src/core/lib/support/mpscq.h",
-    "src/core/lib/support/murmur_hash.h",
-    "src/core/lib/support/stack_lockfree.h",
-    "src/core/lib/support/string.h",
-    "src/core/lib/support/string_windows.h",
-    "src/core/lib/support/thd_internal.h",
-    "src/core/lib/support/time_precise.h",
-    "src/core/lib/support/tmpfile.h",
-  ],
-  includes = [
-    "include",
-    ".",
-  ],
-  deps = [
-  ],
+grpc_cc_library(
+    name = "grpc_secure",
+    srcs = [
+        "src/core/lib/http/httpcli_security_connector.c",
+        "src/core/lib/security/context/security_context.c",
+        "src/core/lib/security/credentials/composite/composite_credentials.c",
+        "src/core/lib/security/credentials/credentials.c",
+        "src/core/lib/security/credentials/credentials_metadata.c",
+        "src/core/lib/security/credentials/fake/fake_credentials.c",
+        "src/core/lib/security/credentials/google_default/credentials_generic.c",
+        "src/core/lib/security/credentials/google_default/google_default_credentials.c",
+        "src/core/lib/security/credentials/iam/iam_credentials.c",
+        "src/core/lib/security/credentials/jwt/json_token.c",
+        "src/core/lib/security/credentials/jwt/jwt_credentials.c",
+        "src/core/lib/security/credentials/jwt/jwt_verifier.c",
+        "src/core/lib/security/credentials/oauth2/oauth2_credentials.c",
+        "src/core/lib/security/credentials/plugin/plugin_credentials.c",
+        "src/core/lib/security/credentials/ssl/ssl_credentials.c",
+        "src/core/lib/security/transport/client_auth_filter.c",
+        "src/core/lib/security/transport/secure_endpoint.c",
+        "src/core/lib/security/transport/security_connector.c",
+        "src/core/lib/security/transport/security_handshaker.c",
+        "src/core/lib/security/transport/server_auth_filter.c",
+        "src/core/lib/security/transport/tsi_error.c",
+        "src/core/lib/security/util/b64.c",
+        "src/core/lib/security/util/json_util.c",
+        "src/core/lib/surface/init_secure.c",
+    ],
+    hdrs = [
+        "src/core/lib/security/context/security_context.h",
+        "src/core/lib/security/credentials/composite/composite_credentials.h",
+        "src/core/lib/security/credentials/credentials.h",
+        "src/core/lib/security/credentials/fake/fake_credentials.h",
+        "src/core/lib/security/credentials/google_default/google_default_credentials.h",
+        "src/core/lib/security/credentials/iam/iam_credentials.h",
+        "src/core/lib/security/credentials/jwt/json_token.h",
+        "src/core/lib/security/credentials/jwt/jwt_credentials.h",
+        "src/core/lib/security/credentials/jwt/jwt_verifier.h",
+        "src/core/lib/security/credentials/oauth2/oauth2_credentials.h",
+        "src/core/lib/security/credentials/plugin/plugin_credentials.h",
+        "src/core/lib/security/credentials/ssl/ssl_credentials.h",
+        "src/core/lib/security/transport/auth_filters.h",
+        "src/core/lib/security/transport/secure_endpoint.h",
+        "src/core/lib/security/transport/security_connector.h",
+        "src/core/lib/security/transport/security_handshaker.h",
+        "src/core/lib/security/transport/tsi_error.h",
+        "src/core/lib/security/util/b64.h",
+        "src/core/lib/security/util/json_util.h",
+    ],
+    language = "c",
+    public_hdrs = [
+        "include/grpc/grpc_security.h",
+    ],
+    deps = [
+        "grpc_base",
+        "grpc_transport_chttp2_alpn",
+        "tsi",
+    ],
 )
 
+grpc_cc_library(
+    name = "grpc_transport_chttp2",
+    srcs = [
+        "src/core/ext/transport/chttp2/transport/bin_decoder.c",
+        "src/core/ext/transport/chttp2/transport/bin_encoder.c",
+        "src/core/ext/transport/chttp2/transport/chttp2_plugin.c",
+        "src/core/ext/transport/chttp2/transport/chttp2_transport.c",
+        "src/core/ext/transport/chttp2/transport/frame_data.c",
+        "src/core/ext/transport/chttp2/transport/frame_goaway.c",
+        "src/core/ext/transport/chttp2/transport/frame_ping.c",
+        "src/core/ext/transport/chttp2/transport/frame_rst_stream.c",
+        "src/core/ext/transport/chttp2/transport/frame_settings.c",
+        "src/core/ext/transport/chttp2/transport/frame_window_update.c",
+        "src/core/ext/transport/chttp2/transport/hpack_encoder.c",
+        "src/core/ext/transport/chttp2/transport/hpack_parser.c",
+        "src/core/ext/transport/chttp2/transport/hpack_table.c",
+        "src/core/ext/transport/chttp2/transport/huffsyms.c",
+        "src/core/ext/transport/chttp2/transport/incoming_metadata.c",
+        "src/core/ext/transport/chttp2/transport/parsing.c",
+        "src/core/ext/transport/chttp2/transport/status_conversion.c",
+        "src/core/ext/transport/chttp2/transport/stream_lists.c",
+        "src/core/ext/transport/chttp2/transport/stream_map.c",
+        "src/core/ext/transport/chttp2/transport/varint.c",
+        "src/core/ext/transport/chttp2/transport/writing.c",
+    ],
+    hdrs = [
+        "src/core/ext/transport/chttp2/transport/bin_decoder.h",
+        "src/core/ext/transport/chttp2/transport/bin_encoder.h",
+        "src/core/ext/transport/chttp2/transport/chttp2_transport.h",
+        "src/core/ext/transport/chttp2/transport/frame.h",
+        "src/core/ext/transport/chttp2/transport/frame_data.h",
+        "src/core/ext/transport/chttp2/transport/frame_goaway.h",
+        "src/core/ext/transport/chttp2/transport/frame_ping.h",
+        "src/core/ext/transport/chttp2/transport/frame_rst_stream.h",
+        "src/core/ext/transport/chttp2/transport/frame_settings.h",
+        "src/core/ext/transport/chttp2/transport/frame_window_update.h",
+        "src/core/ext/transport/chttp2/transport/hpack_encoder.h",
+        "src/core/ext/transport/chttp2/transport/hpack_parser.h",
+        "src/core/ext/transport/chttp2/transport/hpack_table.h",
+        "src/core/ext/transport/chttp2/transport/http2_errors.h",
+        "src/core/ext/transport/chttp2/transport/huffsyms.h",
+        "src/core/ext/transport/chttp2/transport/incoming_metadata.h",
+        "src/core/ext/transport/chttp2/transport/internal.h",
+        "src/core/ext/transport/chttp2/transport/status_conversion.h",
+        "src/core/ext/transport/chttp2/transport/stream_map.h",
+        "src/core/ext/transport/chttp2/transport/varint.h",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_transport_chttp2_alpn",
+    ],
+)
 
+grpc_cc_library(
+    name = "grpc_transport_chttp2_alpn",
+    srcs = [
+        "src/core/ext/transport/chttp2/alpn/alpn.c",
+    ],
+    hdrs = [
+        "src/core/ext/transport/chttp2/alpn/alpn.h",
+    ],
+    language = "c",
+    deps = [
+        "gpr",
+    ],
+)
 
-objc_library(
-  name = "grpc_objc",
-  srcs = [
-    "src/core/lib/surface/init.c",
-    "src/core/lib/channel/channel_args.c",
-    "src/core/lib/channel/channel_stack.c",
-    "src/core/lib/channel/channel_stack_builder.c",
-    "src/core/lib/channel/compress_filter.c",
-    "src/core/lib/channel/connected_channel.c",
-    "src/core/lib/channel/deadline_filter.c",
-    "src/core/lib/channel/handshaker.c",
-    "src/core/lib/channel/http_client_filter.c",
-    "src/core/lib/channel/http_server_filter.c",
-    "src/core/lib/channel/message_size_filter.c",
-    "src/core/lib/compression/compression.c",
-    "src/core/lib/compression/message_compress.c",
-    "src/core/lib/debug/trace.c",
-    "src/core/lib/http/format_request.c",
-    "src/core/lib/http/httpcli.c",
-    "src/core/lib/http/parser.c",
-    "src/core/lib/iomgr/closure.c",
-    "src/core/lib/iomgr/combiner.c",
-    "src/core/lib/iomgr/endpoint.c",
-    "src/core/lib/iomgr/endpoint_pair_posix.c",
-    "src/core/lib/iomgr/endpoint_pair_uv.c",
-    "src/core/lib/iomgr/endpoint_pair_windows.c",
-    "src/core/lib/iomgr/error.c",
-    "src/core/lib/iomgr/ev_epoll_linux.c",
-    "src/core/lib/iomgr/ev_poll_posix.c",
-    "src/core/lib/iomgr/ev_posix.c",
-    "src/core/lib/iomgr/exec_ctx.c",
-    "src/core/lib/iomgr/executor.c",
-    "src/core/lib/iomgr/iocp_windows.c",
-    "src/core/lib/iomgr/iomgr.c",
-    "src/core/lib/iomgr/iomgr_posix.c",
-    "src/core/lib/iomgr/iomgr_uv.c",
-    "src/core/lib/iomgr/iomgr_windows.c",
-    "src/core/lib/iomgr/load_file.c",
-    "src/core/lib/iomgr/network_status_tracker.c",
-    "src/core/lib/iomgr/polling_entity.c",
-    "src/core/lib/iomgr/pollset_set_uv.c",
-    "src/core/lib/iomgr/pollset_set_windows.c",
-    "src/core/lib/iomgr/pollset_uv.c",
-    "src/core/lib/iomgr/pollset_windows.c",
-    "src/core/lib/iomgr/resolve_address_posix.c",
-    "src/core/lib/iomgr/resolve_address_uv.c",
-    "src/core/lib/iomgr/resolve_address_windows.c",
-    "src/core/lib/iomgr/resource_quota.c",
-    "src/core/lib/iomgr/sockaddr_utils.c",
-    "src/core/lib/iomgr/socket_mutator.c",
-    "src/core/lib/iomgr/socket_utils_common_posix.c",
-    "src/core/lib/iomgr/socket_utils_linux.c",
-    "src/core/lib/iomgr/socket_utils_posix.c",
-    "src/core/lib/iomgr/socket_utils_uv.c",
-    "src/core/lib/iomgr/socket_utils_windows.c",
-    "src/core/lib/iomgr/socket_windows.c",
-    "src/core/lib/iomgr/tcp_client_posix.c",
-    "src/core/lib/iomgr/tcp_client_uv.c",
-    "src/core/lib/iomgr/tcp_client_windows.c",
-    "src/core/lib/iomgr/tcp_posix.c",
-    "src/core/lib/iomgr/tcp_server_posix.c",
-    "src/core/lib/iomgr/tcp_server_uv.c",
-    "src/core/lib/iomgr/tcp_server_windows.c",
-    "src/core/lib/iomgr/tcp_uv.c",
-    "src/core/lib/iomgr/tcp_windows.c",
-    "src/core/lib/iomgr/time_averaged_stats.c",
-    "src/core/lib/iomgr/timer_generic.c",
-    "src/core/lib/iomgr/timer_heap.c",
-    "src/core/lib/iomgr/timer_uv.c",
-    "src/core/lib/iomgr/udp_server.c",
-    "src/core/lib/iomgr/unix_sockets_posix.c",
-    "src/core/lib/iomgr/unix_sockets_posix_noop.c",
-    "src/core/lib/iomgr/wakeup_fd_cv.c",
-    "src/core/lib/iomgr/wakeup_fd_eventfd.c",
-    "src/core/lib/iomgr/wakeup_fd_nospecial.c",
-    "src/core/lib/iomgr/wakeup_fd_pipe.c",
-    "src/core/lib/iomgr/wakeup_fd_posix.c",
-    "src/core/lib/iomgr/workqueue_uv.c",
-    "src/core/lib/iomgr/workqueue_windows.c",
-    "src/core/lib/json/json.c",
-    "src/core/lib/json/json_reader.c",
-    "src/core/lib/json/json_string.c",
-    "src/core/lib/json/json_writer.c",
-    "src/core/lib/slice/percent_encoding.c",
-    "src/core/lib/slice/slice.c",
-    "src/core/lib/slice/slice_buffer.c",
-    "src/core/lib/slice/slice_string_helpers.c",
-    "src/core/lib/surface/alarm.c",
-    "src/core/lib/surface/api_trace.c",
-    "src/core/lib/surface/byte_buffer.c",
-    "src/core/lib/surface/byte_buffer_reader.c",
-    "src/core/lib/surface/call.c",
-    "src/core/lib/surface/call_details.c",
-    "src/core/lib/surface/call_log_batch.c",
-    "src/core/lib/surface/channel.c",
-    "src/core/lib/surface/channel_init.c",
-    "src/core/lib/surface/channel_ping.c",
-    "src/core/lib/surface/channel_stack_type.c",
-    "src/core/lib/surface/completion_queue.c",
-    "src/core/lib/surface/event_string.c",
-    "src/core/lib/surface/lame_client.c",
-    "src/core/lib/surface/metadata_array.c",
-    "src/core/lib/surface/server.c",
-    "src/core/lib/surface/validate_metadata.c",
-    "src/core/lib/surface/version.c",
-    "src/core/lib/transport/byte_stream.c",
-    "src/core/lib/transport/connectivity_state.c",
-    "src/core/lib/transport/mdstr_hash_table.c",
-    "src/core/lib/transport/metadata.c",
-    "src/core/lib/transport/metadata_batch.c",
-    "src/core/lib/transport/pid_controller.c",
-    "src/core/lib/transport/service_config.c",
-    "src/core/lib/transport/static_metadata.c",
-    "src/core/lib/transport/timeout_encoding.c",
-    "src/core/lib/transport/transport.c",
-    "src/core/lib/transport/transport_op_string.c",
-    "src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.c",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_plugin.c",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.c",
-    "src/core/ext/transport/chttp2/transport/frame_data.c",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.c",
-    "src/core/ext/transport/chttp2/transport/frame_ping.c",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.c",
-    "src/core/ext/transport/chttp2/transport/frame_settings.c",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.c",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.c",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.c",
-    "src/core/ext/transport/chttp2/transport/hpack_table.c",
-    "src/core/ext/transport/chttp2/transport/huffsyms.c",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.c",
-    "src/core/ext/transport/chttp2/transport/parsing.c",
-    "src/core/ext/transport/chttp2/transport/status_conversion.c",
-    "src/core/ext/transport/chttp2/transport/stream_lists.c",
-    "src/core/ext/transport/chttp2/transport/stream_map.c",
-    "src/core/ext/transport/chttp2/transport/varint.c",
-    "src/core/ext/transport/chttp2/transport/writing.c",
-    "src/core/ext/transport/chttp2/alpn/alpn.c",
-    "src/core/lib/http/httpcli_security_connector.c",
-    "src/core/lib/security/context/security_context.c",
-    "src/core/lib/security/credentials/composite/composite_credentials.c",
-    "src/core/lib/security/credentials/credentials.c",
-    "src/core/lib/security/credentials/credentials_metadata.c",
-    "src/core/lib/security/credentials/fake/fake_credentials.c",
-    "src/core/lib/security/credentials/google_default/credentials_generic.c",
-    "src/core/lib/security/credentials/google_default/google_default_credentials.c",
-    "src/core/lib/security/credentials/iam/iam_credentials.c",
-    "src/core/lib/security/credentials/jwt/json_token.c",
-    "src/core/lib/security/credentials/jwt/jwt_credentials.c",
-    "src/core/lib/security/credentials/jwt/jwt_verifier.c",
-    "src/core/lib/security/credentials/oauth2/oauth2_credentials.c",
-    "src/core/lib/security/credentials/plugin/plugin_credentials.c",
-    "src/core/lib/security/credentials/ssl/ssl_credentials.c",
-    "src/core/lib/security/transport/client_auth_filter.c",
-    "src/core/lib/security/transport/secure_endpoint.c",
-    "src/core/lib/security/transport/security_connector.c",
-    "src/core/lib/security/transport/security_handshaker.c",
-    "src/core/lib/security/transport/server_auth_filter.c",
-    "src/core/lib/security/transport/tsi_error.c",
-    "src/core/lib/security/util/b64.c",
-    "src/core/lib/security/util/json_util.c",
-    "src/core/lib/surface/init_secure.c",
-    "src/core/lib/tsi/fake_transport_security.c",
-    "src/core/lib/tsi/ssl_transport_security.c",
-    "src/core/lib/tsi/transport_security.c",
-    "src/core/ext/transport/chttp2/server/chttp2_server.c",
-    "src/core/ext/transport/chttp2/client/secure/secure_channel_create.c",
-    "src/core/ext/client_channel/channel_connectivity.c",
-    "src/core/ext/client_channel/client_channel.c",
-    "src/core/ext/client_channel/client_channel_factory.c",
-    "src/core/ext/client_channel/client_channel_plugin.c",
-    "src/core/ext/client_channel/connector.c",
-    "src/core/ext/client_channel/default_initial_connect_string.c",
-    "src/core/ext/client_channel/http_connect_handshaker.c",
-    "src/core/ext/client_channel/initial_connect_string.c",
-    "src/core/ext/client_channel/lb_policy.c",
-    "src/core/ext/client_channel/lb_policy_factory.c",
-    "src/core/ext/client_channel/lb_policy_registry.c",
-    "src/core/ext/client_channel/parse_address.c",
-    "src/core/ext/client_channel/resolver.c",
-    "src/core/ext/client_channel/resolver_factory.c",
-    "src/core/ext/client_channel/resolver_registry.c",
-    "src/core/ext/client_channel/subchannel.c",
-    "src/core/ext/client_channel/subchannel_index.c",
-    "src/core/ext/client_channel/uri_parser.c",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.c",
-    "src/core/ext/transport/chttp2/server/insecure/server_chttp2.c",
-    "src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c",
-    "src/core/ext/transport/chttp2/client/insecure/channel_create.c",
-    "src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c",
-    "src/core/ext/lb_policy/grpclb/grpclb.c",
-    "src/core/ext/lb_policy/grpclb/load_balancer_api.c",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c",
-    "src/core/ext/lb_policy/pick_first/pick_first.c",
-    "src/core/ext/lb_policy/round_robin/round_robin.c",
-    "src/core/ext/resolver/dns/native/dns_resolver.c",
-    "src/core/ext/resolver/sockaddr/sockaddr_resolver.c",
-    "src/core/ext/load_reporting/load_reporting.c",
-    "src/core/ext/load_reporting/load_reporting_filter.c",
-    "src/core/ext/census/base_resources.c",
-    "src/core/ext/census/context.c",
-    "src/core/ext/census/gen/census.pb.c",
-    "src/core/ext/census/gen/trace_context.pb.c",
-    "src/core/ext/census/grpc_context.c",
-    "src/core/ext/census/grpc_filter.c",
-    "src/core/ext/census/grpc_plugin.c",
-    "src/core/ext/census/initialize.c",
-    "src/core/ext/census/mlog.c",
-    "src/core/ext/census/operation.c",
-    "src/core/ext/census/placeholders.c",
-    "src/core/ext/census/resource.c",
-    "src/core/ext/census/trace_context.c",
-    "src/core/ext/census/tracing.c",
-    "src/core/plugin_registry/grpc_plugin_registry.c",
-  ],
+grpc_cc_library(
+  name = "grpc_transport_chttp2_client_connector",
   hdrs = [
-    "include/grpc/byte_buffer.h",
-    "include/grpc/byte_buffer_reader.h",
-    "include/grpc/compression.h",
-    "include/grpc/grpc.h",
-    "include/grpc/grpc_posix.h",
-    "include/grpc/grpc_security_constants.h",
-    "include/grpc/slice.h",
-    "include/grpc/slice_buffer.h",
-    "include/grpc/status.h",
-    "include/grpc/impl/codegen/byte_buffer_reader.h",
-    "include/grpc/impl/codegen/compression_types.h",
-    "include/grpc/impl/codegen/connectivity_state.h",
-    "include/grpc/impl/codegen/grpc_types.h",
-    "include/grpc/impl/codegen/propagation_bits.h",
-    "include/grpc/impl/codegen/status.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_windows.h",
-    "include/grpc/impl/codegen/gpr_types.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_windows.h",
-    "include/grpc/grpc_security.h",
-    "include/grpc/census.h",
-    "src/core/lib/channel/channel_args.h",
-    "src/core/lib/channel/channel_stack.h",
-    "src/core/lib/channel/channel_stack_builder.h",
-    "src/core/lib/channel/compress_filter.h",
-    "src/core/lib/channel/connected_channel.h",
-    "src/core/lib/channel/context.h",
-    "src/core/lib/channel/deadline_filter.h",
-    "src/core/lib/channel/handshaker.h",
-    "src/core/lib/channel/http_client_filter.h",
-    "src/core/lib/channel/http_server_filter.h",
-    "src/core/lib/channel/message_size_filter.h",
-    "src/core/lib/compression/algorithm_metadata.h",
-    "src/core/lib/compression/message_compress.h",
-    "src/core/lib/debug/trace.h",
-    "src/core/lib/http/format_request.h",
-    "src/core/lib/http/httpcli.h",
-    "src/core/lib/http/parser.h",
-    "src/core/lib/iomgr/closure.h",
-    "src/core/lib/iomgr/combiner.h",
-    "src/core/lib/iomgr/endpoint.h",
-    "src/core/lib/iomgr/endpoint_pair.h",
-    "src/core/lib/iomgr/error.h",
-    "src/core/lib/iomgr/ev_epoll_linux.h",
-    "src/core/lib/iomgr/ev_poll_posix.h",
-    "src/core/lib/iomgr/ev_posix.h",
-    "src/core/lib/iomgr/exec_ctx.h",
-    "src/core/lib/iomgr/executor.h",
-    "src/core/lib/iomgr/iocp_windows.h",
-    "src/core/lib/iomgr/iomgr.h",
-    "src/core/lib/iomgr/iomgr_internal.h",
-    "src/core/lib/iomgr/iomgr_posix.h",
-    "src/core/lib/iomgr/load_file.h",
-    "src/core/lib/iomgr/network_status_tracker.h",
-    "src/core/lib/iomgr/polling_entity.h",
-    "src/core/lib/iomgr/pollset.h",
-    "src/core/lib/iomgr/pollset_set.h",
-    "src/core/lib/iomgr/pollset_set_windows.h",
-    "src/core/lib/iomgr/pollset_uv.h",
-    "src/core/lib/iomgr/pollset_windows.h",
-    "src/core/lib/iomgr/port.h",
-    "src/core/lib/iomgr/resolve_address.h",
-    "src/core/lib/iomgr/resource_quota.h",
-    "src/core/lib/iomgr/sockaddr.h",
-    "src/core/lib/iomgr/sockaddr_posix.h",
-    "src/core/lib/iomgr/sockaddr_utils.h",
-    "src/core/lib/iomgr/sockaddr_windows.h",
-    "src/core/lib/iomgr/socket_mutator.h",
-    "src/core/lib/iomgr/socket_utils.h",
-    "src/core/lib/iomgr/socket_utils_posix.h",
-    "src/core/lib/iomgr/socket_windows.h",
-    "src/core/lib/iomgr/tcp_client.h",
-    "src/core/lib/iomgr/tcp_client_posix.h",
-    "src/core/lib/iomgr/tcp_posix.h",
-    "src/core/lib/iomgr/tcp_server.h",
-    "src/core/lib/iomgr/tcp_uv.h",
-    "src/core/lib/iomgr/tcp_windows.h",
-    "src/core/lib/iomgr/time_averaged_stats.h",
-    "src/core/lib/iomgr/timer.h",
-    "src/core/lib/iomgr/timer_generic.h",
-    "src/core/lib/iomgr/timer_heap.h",
-    "src/core/lib/iomgr/timer_uv.h",
-    "src/core/lib/iomgr/udp_server.h",
-    "src/core/lib/iomgr/unix_sockets_posix.h",
-    "src/core/lib/iomgr/wakeup_fd_cv.h",
-    "src/core/lib/iomgr/wakeup_fd_pipe.h",
-    "src/core/lib/iomgr/wakeup_fd_posix.h",
-    "src/core/lib/iomgr/workqueue.h",
-    "src/core/lib/iomgr/workqueue_uv.h",
-    "src/core/lib/iomgr/workqueue_windows.h",
-    "src/core/lib/json/json.h",
-    "src/core/lib/json/json_common.h",
-    "src/core/lib/json/json_reader.h",
-    "src/core/lib/json/json_writer.h",
-    "src/core/lib/slice/percent_encoding.h",
-    "src/core/lib/slice/slice_string_helpers.h",
-    "src/core/lib/surface/api_trace.h",
-    "src/core/lib/surface/call.h",
-    "src/core/lib/surface/call_test_only.h",
-    "src/core/lib/surface/channel.h",
-    "src/core/lib/surface/channel_init.h",
-    "src/core/lib/surface/channel_stack_type.h",
-    "src/core/lib/surface/completion_queue.h",
-    "src/core/lib/surface/event_string.h",
-    "src/core/lib/surface/init.h",
-    "src/core/lib/surface/lame_client.h",
-    "src/core/lib/surface/server.h",
-    "src/core/lib/transport/byte_stream.h",
-    "src/core/lib/transport/connectivity_state.h",
-    "src/core/lib/transport/mdstr_hash_table.h",
-    "src/core/lib/transport/metadata.h",
-    "src/core/lib/transport/metadata_batch.h",
-    "src/core/lib/transport/pid_controller.h",
-    "src/core/lib/transport/service_config.h",
-    "src/core/lib/transport/static_metadata.h",
-    "src/core/lib/transport/timeout_encoding.h",
-    "src/core/lib/transport/transport.h",
-    "src/core/lib/transport/transport_impl.h",
-    "src/core/ext/transport/chttp2/transport/bin_decoder.h",
-    "src/core/ext/transport/chttp2/transport/bin_encoder.h",
-    "src/core/ext/transport/chttp2/transport/chttp2_transport.h",
-    "src/core/ext/transport/chttp2/transport/frame.h",
-    "src/core/ext/transport/chttp2/transport/frame_data.h",
-    "src/core/ext/transport/chttp2/transport/frame_goaway.h",
-    "src/core/ext/transport/chttp2/transport/frame_ping.h",
-    "src/core/ext/transport/chttp2/transport/frame_rst_stream.h",
-    "src/core/ext/transport/chttp2/transport/frame_settings.h",
-    "src/core/ext/transport/chttp2/transport/frame_window_update.h",
-    "src/core/ext/transport/chttp2/transport/hpack_encoder.h",
-    "src/core/ext/transport/chttp2/transport/hpack_parser.h",
-    "src/core/ext/transport/chttp2/transport/hpack_table.h",
-    "src/core/ext/transport/chttp2/transport/http2_errors.h",
-    "src/core/ext/transport/chttp2/transport/huffsyms.h",
-    "src/core/ext/transport/chttp2/transport/incoming_metadata.h",
-    "src/core/ext/transport/chttp2/transport/internal.h",
-    "src/core/ext/transport/chttp2/transport/status_conversion.h",
-    "src/core/ext/transport/chttp2/transport/stream_map.h",
-    "src/core/ext/transport/chttp2/transport/varint.h",
-    "src/core/ext/transport/chttp2/alpn/alpn.h",
-    "src/core/lib/security/context/security_context.h",
-    "src/core/lib/security/credentials/composite/composite_credentials.h",
-    "src/core/lib/security/credentials/credentials.h",
-    "src/core/lib/security/credentials/fake/fake_credentials.h",
-    "src/core/lib/security/credentials/google_default/google_default_credentials.h",
-    "src/core/lib/security/credentials/iam/iam_credentials.h",
-    "src/core/lib/security/credentials/jwt/json_token.h",
-    "src/core/lib/security/credentials/jwt/jwt_credentials.h",
-    "src/core/lib/security/credentials/jwt/jwt_verifier.h",
-    "src/core/lib/security/credentials/oauth2/oauth2_credentials.h",
-    "src/core/lib/security/credentials/plugin/plugin_credentials.h",
-    "src/core/lib/security/credentials/ssl/ssl_credentials.h",
-    "src/core/lib/security/transport/auth_filters.h",
-    "src/core/lib/security/transport/secure_endpoint.h",
-    "src/core/lib/security/transport/security_connector.h",
-    "src/core/lib/security/transport/security_handshaker.h",
-    "src/core/lib/security/transport/tsi_error.h",
-    "src/core/lib/security/util/b64.h",
-    "src/core/lib/security/util/json_util.h",
-    "src/core/lib/tsi/fake_transport_security.h",
-    "src/core/lib/tsi/ssl_transport_security.h",
-    "src/core/lib/tsi/ssl_types.h",
-    "src/core/lib/tsi/transport_security.h",
-    "src/core/lib/tsi/transport_security_interface.h",
-    "src/core/ext/transport/chttp2/server/chttp2_server.h",
-    "src/core/ext/client_channel/client_channel.h",
-    "src/core/ext/client_channel/client_channel_factory.h",
-    "src/core/ext/client_channel/connector.h",
-    "src/core/ext/client_channel/http_connect_handshaker.h",
-    "src/core/ext/client_channel/initial_connect_string.h",
-    "src/core/ext/client_channel/lb_policy.h",
-    "src/core/ext/client_channel/lb_policy_factory.h",
-    "src/core/ext/client_channel/lb_policy_registry.h",
-    "src/core/ext/client_channel/parse_address.h",
-    "src/core/ext/client_channel/resolver.h",
-    "src/core/ext/client_channel/resolver_factory.h",
-    "src/core/ext/client_channel/resolver_registry.h",
-    "src/core/ext/client_channel/subchannel.h",
-    "src/core/ext/client_channel/subchannel_index.h",
-    "src/core/ext/client_channel/uri_parser.h",
-    "src/core/ext/transport/chttp2/client/chttp2_connector.h",
-    "src/core/ext/lb_policy/grpclb/grpclb.h",
-    "src/core/ext/lb_policy/grpclb/load_balancer_api.h",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h",
-    "src/core/ext/load_reporting/load_reporting.h",
-    "src/core/ext/load_reporting/load_reporting_filter.h",
-    "src/core/ext/census/aggregation.h",
-    "src/core/ext/census/base_resources.h",
-    "src/core/ext/census/census_interface.h",
-    "src/core/ext/census/census_rpc_stats.h",
-    "src/core/ext/census/gen/census.pb.h",
-    "src/core/ext/census/gen/trace_context.pb.h",
-    "src/core/ext/census/grpc_filter.h",
-    "src/core/ext/census/mlog.h",
-    "src/core/ext/census/resource.h",
-    "src/core/ext/census/rpc_metric_id.h",
-    "src/core/ext/census/trace_context.h",
-  ],
-  includes = [
-    "include",
-    ".",
+   "src/core/ext/transport/chttp2/client/chttp2_connector.h",
   ],
-  deps = [
-    ":gpr_objc",
-    "//external:libssl_objc",
-    "//external:nanopb",
-  ],
-  sdk_dylibs = ["libz"],
-)
-
-
-
-cc_binary(
-  name = "grpc_cpp_plugin",
   srcs = [
-    "src/compiler/cpp_plugin.cc",
+   "src/core/ext/transport/chttp2/client/chttp2_connector.c",
   ],
+  language = "c",
   deps = [
-    "//external:protobuf_compiler",
-    ":grpc_plugin_support",
+   "grpc_transport_chttp2",
+   "grpc_base",
+   "grpc_client_channel",
   ],
 )
 
 
-cc_binary(
-  name = "grpc_csharp_plugin",
-  srcs = [
-    "src/compiler/csharp_plugin.cc",
-  ],
-  deps = [
-    "//external:protobuf_compiler",
-    ":grpc_plugin_support",
-  ],
+grpc_cc_library(
+    name = "grpc_transport_chttp2_client_insecure",
+    srcs = [
+        "src/core/ext/transport/chttp2/client/insecure/channel_create.c",
+        "src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_client_channel",
+        "grpc_transport_chttp2",
+        "grpc_transport_chttp2_client_connector",
+    ],
 )
 
-
-cc_binary(
-  name = "grpc_node_plugin",
-  srcs = [
-    "src/compiler/node_plugin.cc",
-  ],
-  deps = [
-    "//external:protobuf_compiler",
-    ":grpc_plugin_support",
-  ],
+grpc_cc_library(
+    name = "grpc_transport_chttp2_client_secure",
+    srcs = [
+        "src/core/ext/transport/chttp2/client/secure/secure_channel_create.c",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_client_channel",
+        "grpc_secure",
+        "grpc_transport_chttp2",
+        "grpc_transport_chttp2_client_connector",
+    ],
 )
 
-
-cc_binary(
-  name = "grpc_objective_c_plugin",
-  srcs = [
-    "src/compiler/objective_c_plugin.cc",
-  ],
-  deps = [
-    "//external:protobuf_compiler",
-    ":grpc_plugin_support",
-  ],
+grpc_cc_library(
+    name = "grpc_transport_chttp2_server",
+    srcs = [
+        "src/core/ext/transport/chttp2/server/chttp2_server.c",
+    ],
+    hdrs = [
+        "src/core/ext/transport/chttp2/server/chttp2_server.h",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_transport_chttp2",
+    ],
 )
 
-
-cc_binary(
-  name = "grpc_php_plugin",
-  srcs = [
-    "src/compiler/php_plugin.cc",
-  ],
-  deps = [
-    "//external:protobuf_compiler",
-    ":grpc_plugin_support",
-  ],
+grpc_cc_library(
+    name = "grpc_transport_chttp2_server_insecure",
+    srcs = [
+        "src/core/ext/transport/chttp2/server/insecure/server_chttp2.c",
+        "src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_transport_chttp2",
+        "grpc_transport_chttp2_server",
+    ],
 )
 
-
-cc_binary(
-  name = "grpc_python_plugin",
-  srcs = [
-    "src/compiler/python_plugin.cc",
-  ],
-  deps = [
-    "//external:protobuf_compiler",
-    ":grpc_plugin_support",
-  ],
+grpc_cc_library(
+    name = "grpc_transport_chttp2_server_secure",
+    srcs = [
+        "src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_secure",
+        "grpc_transport_chttp2",
+        "grpc_transport_chttp2_server",
+    ],
 )
 
-
-cc_binary(
-  name = "grpc_ruby_plugin",
-  srcs = [
-    "src/compiler/ruby_plugin.cc",
-  ],
-  deps = [
-    "//external:protobuf_compiler",
-    ":grpc_plugin_support",
-  ],
+grpc_cc_library(
+    name = "grpc_transport_cronet_client_secure",
+    srcs = [
+        "src/core/ext/transport/cronet/client/secure/cronet_channel_create.c",
+        "src/core/ext/transport/cronet/transport/cronet_api_dummy.c",
+        "src/core/ext/transport/cronet/transport/cronet_transport.c",
+    ],
+    hdrs = [
+        "third_party/Cronet/bidirectional_stream_c.h",
+    ],
+    language = "c",
+    public_hdrs = [
+        "include/grpc/grpc_cronet.h",
+        "include/grpc/grpc_security.h",
+        "include/grpc/grpc_security_constants.h",
+    ],
+    deps = [
+        "grpc_base",
+        "grpc_transport_chttp2",
+    ],
 )
 
-
-
-
-
-
-
-
-objc_path = "src/objective-c"
-
-rx_library_path = objc_path + "/RxLibrary"
-
-objc_library(
-  name = "rx_library",
-  hdrs = glob([
-    rx_library_path + "/*.h",
-    rx_library_path + "/transformations/*.h",
-  ]),
-  srcs = glob([
-    rx_library_path + "/*.m",
-    rx_library_path + "/transformations/*.m",
-  ]),
-  includes = [objc_path],
-  deps = [
-    ":rx_library_private",
-  ],
+grpc_cc_library(
+    name = "tsi",
+    srcs = [
+        "src/core/lib/tsi/fake_transport_security.c",
+        "src/core/lib/tsi/ssl_transport_security.c",
+        "src/core/lib/tsi/transport_security.c",
+    ],
+    hdrs = [
+        "src/core/lib/tsi/fake_transport_security.h",
+        "src/core/lib/tsi/ssl_transport_security.h",
+        "src/core/lib/tsi/ssl_types.h",
+        "src/core/lib/tsi/transport_security.h",
+        "src/core/lib/tsi/transport_security_interface.h",
+    ],
+    external_deps = [
+        "libssl",
+    ],
+    language = "c",
+    deps = [
+        "gpr",
+    ],
 )
 
-objc_library(
-  name = "rx_library_private",
-  hdrs = glob([rx_library_path + "/private/*.h"]),
-  srcs = glob([rx_library_path + "/private/*.m"]),
-  visibility = ["//visibility:private"],
+grpc_cc_library(
+    name = "grpc++_base",
+    srcs = [
+        "src/cpp/client/channel_cc.cc",
+        "src/cpp/client/client_context.cc",
+        "src/cpp/client/create_channel.cc",
+        "src/cpp/client/create_channel_internal.cc",
+        "src/cpp/client/create_channel_posix.cc",
+        "src/cpp/client/credentials_cc.cc",
+        "src/cpp/client/generic_stub.cc",
+        "src/cpp/common/channel_arguments.cc",
+        "src/cpp/common/channel_filter.cc",
+        "src/cpp/common/completion_queue_cc.cc",
+        "src/cpp/common/core_codegen.cc",
+        "src/cpp/common/rpc_method.cc",
+        "src/cpp/common/version_cc.cc",
+        "src/cpp/server/async_generic_service.cc",
+        "src/cpp/server/create_default_thread_pool.cc",
+        "src/cpp/server/dynamic_thread_pool.cc",
+        "src/cpp/server/server_builder.cc",
+        "src/cpp/server/server_cc.cc",
+        "src/cpp/server/server_context.cc",
+        "src/cpp/server/server_credentials.cc",
+        "src/cpp/server/server_posix.cc",
+        "src/cpp/thread_manager/thread_manager.cc",
+        "src/cpp/util/byte_buffer_cc.cc",
+        "src/cpp/util/slice_cc.cc",
+        "src/cpp/util/status.cc",
+        "src/cpp/util/string_ref.cc",
+        "src/cpp/util/time_cc.cc",
+    ],
+    hdrs = [
+        "src/cpp/client/create_channel_internal.h",
+        "src/cpp/common/channel_filter.h",
+        "src/cpp/server/dynamic_thread_pool.h",
+        "src/cpp/server/thread_pool_interface.h",
+        "src/cpp/thread_manager/thread_manager.h",
+    ],
+    language = "c++",
+    public_hdrs = [
+        "include/grpc++/alarm.h",
+        "include/grpc++/channel.h",
+        "include/grpc++/client_context.h",
+        "include/grpc++/completion_queue.h",
+        "include/grpc++/create_channel.h",
+        "include/grpc++/create_channel_posix.h",
+        "include/grpc++/generic/async_generic_service.h",
+        "include/grpc++/generic/generic_stub.h",
+        "include/grpc++/grpc++.h",
+        "include/grpc++/impl/call.h",
+        "include/grpc++/impl/client_unary_call.h",
+        "include/grpc++/impl/codegen/core_codegen.h",
+        "include/grpc++/impl/grpc_library.h",
+        "include/grpc++/impl/method_handler_impl.h",
+        "include/grpc++/impl/rpc_method.h",
+        "include/grpc++/impl/rpc_service_method.h",
+        "include/grpc++/impl/serialization_traits.h",
+        "include/grpc++/impl/server_builder_option.h",
+        "include/grpc++/impl/server_builder_plugin.h",
+        "include/grpc++/impl/server_initializer.h",
+        "include/grpc++/impl/service_type.h",
+        "include/grpc++/impl/sync_cxx11.h",
+        "include/grpc++/impl/sync_no_cxx11.h",
+        "include/grpc++/resource_quota.h",
+        "include/grpc++/security/auth_context.h",
+        "include/grpc++/security/auth_metadata_processor.h",
+        "include/grpc++/security/credentials.h",
+        "include/grpc++/security/server_credentials.h",
+        "include/grpc++/server.h",
+        "include/grpc++/server_builder.h",
+        "include/grpc++/server_context.h",
+        "include/grpc++/server_posix.h",
+        "include/grpc++/support/async_stream.h",
+        "include/grpc++/support/async_unary_call.h",
+        "include/grpc++/support/byte_buffer.h",
+        "include/grpc++/support/channel_arguments.h",
+        "include/grpc++/support/config.h",
+        "include/grpc++/support/slice.h",
+        "include/grpc++/support/status.h",
+        "include/grpc++/support/status_code_enum.h",
+        "include/grpc++/support/string_ref.h",
+        "include/grpc++/support/stub_options.h",
+        "include/grpc++/support/sync_stream.h",
+        "include/grpc++/support/time.h",
+    ],
+    deps = [
+        "grpc",
+        "grpc++_codegen_base",
+    ],
 )
 
-objc_client_path = objc_path + "/GRPCClient"
+grpc_cc_library(
+    name = "grpc++_codegen_base",
+    language = "c++",
+    public_hdrs = [
+        "include/grpc++/impl/codegen/async_stream.h",
+        "include/grpc++/impl/codegen/async_unary_call.h",
+        "include/grpc++/impl/codegen/call.h",
+        "include/grpc++/impl/codegen/call_hook.h",
+        "include/grpc++/impl/codegen/channel_interface.h",
+        "include/grpc++/impl/codegen/client_context.h",
+        "include/grpc++/impl/codegen/client_unary_call.h",
+        "include/grpc++/impl/codegen/completion_queue.h",
+        "include/grpc++/impl/codegen/completion_queue_tag.h",
+        "include/grpc++/impl/codegen/config.h",
+        "include/grpc++/impl/codegen/core_codegen_interface.h",
+        "include/grpc++/impl/codegen/create_auth_context.h",
+        "include/grpc++/impl/codegen/grpc_library.h",
+        "include/grpc++/impl/codegen/method_handler_impl.h",
+        "include/grpc++/impl/codegen/rpc_method.h",
+        "include/grpc++/impl/codegen/rpc_service_method.h",
+        "include/grpc++/impl/codegen/security/auth_context.h",
+        "include/grpc++/impl/codegen/serialization_traits.h",
+        "include/grpc++/impl/codegen/server_context.h",
+        "include/grpc++/impl/codegen/server_interface.h",
+        "include/grpc++/impl/codegen/service_type.h",
+        "include/grpc++/impl/codegen/status.h",
+        "include/grpc++/impl/codegen/status_code_enum.h",
+        "include/grpc++/impl/codegen/status_helper.h",
+        "include/grpc++/impl/codegen/string_ref.h",
+        "include/grpc++/impl/codegen/stub_options.h",
+        "include/grpc++/impl/codegen/sync_stream.h",
+        "include/grpc++/impl/codegen/time.h",
+    ],
+    deps = [
+        "grpc_codegen",
+    ],
+)
 
-objc_library(
-  name = "grpc_client",
-  hdrs = glob([
-    objc_client_path + "/*.h",
-    objc_client_path + "/private/*.h",
-  ]),
-  srcs = glob([
-    objc_client_path + "/*.m",
-    objc_client_path + "/private/*.m",
-  ]),
-  includes = [objc_path],
-  bundles = [":gRPCCertificates"],
-  deps = [
-    ":grpc_objc",
-    ":rx_library",
-  ],
+grpc_cc_library(
+    name = "grpc++_codegen_base_src",
+    srcs = [
+        "src/cpp/codegen/codegen_init.cc",
+    ],
+    language = "c++",
+    deps = [
+        "grpc++_codegen_base",
+    ],
 )
 
-objc_bundle_library(
-    # The choice of name is signicant here, since it determines the bundle name.
-    name = "gRPCCertificates",
-    resources = ["etc/roots.pem"],
+grpc_cc_library(
+    name = "grpc++_codegen_proto",
+    language = "c++",
+    public_hdrs = [
+        "include/grpc++/impl/codegen/proto_utils.h",
+    ],
+    deps = [
+        "grpc++_codegen_base",
+        "grpc++_config_proto",
+    ],
 )
 
-proto_objc_rpc_path = objc_path + "/ProtoRPC"
+grpc_cc_library(
+    name = "grpc++_config_proto",
+    language = "c++",
+    public_hdrs = [
+        "include/grpc++/impl/codegen/config_protobuf.h",
+    ],
+)
 
-objc_library(
-  name = "proto_objc_rpc",
-  hdrs = glob([
-    proto_objc_rpc_path + "/*.h",
-  ]),
-  srcs = glob([
-    proto_objc_rpc_path + "/*.m",
-  ]),
-  includes = [objc_path],
-  deps = [
-    ":grpc_client",
-    ":rx_library",
-    "//external:protobuf_objc",
-  ],
+grpc_cc_library(
+    name = "thrift_util",
+    language = "c++",
+    public_hdrs = [
+        "include/grpc++/impl/codegen/thrift_serializer.h",
+        "include/grpc++/impl/codegen/thrift_utils.h",
+    ],
+    deps = [
+        "grpc++_codegen_base",
+    ],
 )
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ff0927504aa54786a5a3233ab43324e233bd21db..c5a1927c92e3a5445f2ae5cf00cdf8f5a2b4adce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,6 +48,9 @@ set(PACKAGE_TARNAME   "${PACKAGE_NAME}-${PACKAGE_VERSION}")
 set(PACKAGE_BUGREPORT "https://github.com/grpc/grpc/issues/")
 project(${PACKAGE_NAME} C CXX)
 
+# Options
+option(gRPC_BUILD_TESTS "Build tests" OFF)
+
 if (NOT MSVC)
   set(gRPC_INSTALL ON CACHE BOOL "Generate installation target")
 else()
@@ -63,10 +66,19 @@ set_property(CACHE gRPC_SSL_PROVIDER PROPERTY STRINGS "module" "package")
 set(gRPC_PROTOBUF_PROVIDER "module" CACHE STRING "Provider of protobuf library")
 set_property(CACHE gRPC_PROTOBUF_PROVIDER PROPERTY STRINGS "module" "package")
 
+set(gRPC_GFLAGS_PROVIDER "module" CACHE STRING "Provider of gflags library")
+set_property(CACHE gRPC_GFLAGS_PROVIDER PROPERTY STRINGS "module" "package")
+
 set(gRPC_USE_PROTO_LITE OFF CACHE BOOL "Use the protobuf-lite library")
 
 if (MSVC)
-  add_definitions( -D_WIN32_WINNT=0x600 )
+  add_definitions(-D_WIN32_WINNT=0x600 -D_SCL_SECURE_NO_WARNINGS -D_CRT_SECURE_NO_WARNINGS -D_WINSOCK_DEPRECATED_NO_WARNINGS)
+  # needed to compile boringssl
+  add_definitions(/wd4464 /wd4623 /wd4668 /wd4701 /wd4702 /wd4777 /wd5027)
+  # needed to compile protobuf
+  add_definitions(/wd4065 /wd4506)
+  # TODO(jtattermusch): revisit C4267 occurrences throughout the code
+  add_definitions(/wd4267)
 endif()
 
 if (gRPC_USE_PROTO_LITE)
@@ -116,6 +128,9 @@ if("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "module")
     if(TARGET libprotoc)
       set(_gRPC_PROTOBUF_PROTOC_LIBRARIES libprotoc)
     endif()
+    if(TARGET protoc)
+      set(_gRPC_PROTOBUF_PROTOC protoc)
+    endif()
   else()
       message(WARNING "gRPC_PROTOBUF_PROVIDER is \"module\" but PROTOBUF_ROOT_DIR is wrong")
   endif()
@@ -128,6 +143,9 @@ elseif("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "package")
     if(TARGET protobuf::libprotoc)
       set(_gRPC_PROTOBUF_PROTOC_LIBRARIES protobuf::libprotoc)
     endif()
+    if(TARGET protobuf::protoc)
+      set(_gRPC_PROTOBUF_PROTOC protobuf::protoc)
+    endif()
     set(_gRPC_FIND_PROTOBUF "if(NOT protobuf_FOUND)\n  find_package(protobuf CONFIG)\nendif()")
   else()
     find_package(Protobuf MODULE)
@@ -155,6 +173,26 @@ elseif("${gRPC_SSL_PROVIDER}" STREQUAL "package")
   set(_gRPC_FIND_SSL "if(NOT OpenSSL_FOUND)\n  find_package(OpenSSL)\nendif()")
 endif()
 
+if("${gRPC_GFLAGS_PROVIDER}" STREQUAL "module")
+  if(NOT GFLAGS_ROOT_DIR)
+    set(GFLAGS_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/gflags)
+  endif()
+  if(EXISTS "${GFLAGS_ROOT_DIR}/CMakeLists.txt")
+      add_subdirectory(${GFLAGS_ROOT_DIR} third_party/gflags)
+      if(TARGET gflags_static)
+          set(_gRPC_GFLAGS_LIBRARIES gflags_static)
+      endif()
+  else()
+      message(WARNING "gRPC_GFLAGS_PROVIDER is \"module\" but GFLAGS_ROOT_DIR is wrong")
+  endif()
+elseif("${gRPC_GFLAGS_PROVIDER}" STREQUAL "package")
+  find_package(gflags)
+  if(TARGET gflags::gflags)
+    set(_gRPC_GFLAGS_LIBRARIES gflags::gflags)
+  endif()
+  set(_gRPC_FIND_GFLAGS "if(NOT gflags_FOUND)\n  find_package(gflags)\nendif()")
+endif()
+
 if(NOT MSVC)
   set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -std=c11")
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
@@ -169,7 +207,56 @@ if(NOT DEFINED CMAKE_INSTALL_CMAKEDIR)
   set(CMAKE_INSTALL_CMAKEDIR "${CMAKE_INSTALL_LIBDIR}/cmake/gRPC")
 endif()
 
-  
+# Create directory for generated .proto files
+set(_gRPC_PROTO_GENS_DIR ${CMAKE_BINARY_DIR}/gens)
+file(MAKE_DIRECTORY ${_gRPC_PROTO_GENS_DIR})
+
+#  protobuf_generate_grpc_cpp
+#  --------------------------
+#
+#   Add custom commands to process ``.proto`` files to C++ using protoc and
+#   GRPC plugin::
+#
+#     protobuf_generate_grpc_cpp [<ARGN>...]
+#
+#   ``ARGN``
+#     ``.proto`` files
+#
+function(protobuf_generate_grpc_cpp)
+  if(NOT ARGN)
+    message(SEND_ERROR "Error: PROTOBUF_GENERATE_GRPC_CPP() called without any proto files")
+    return()
+  endif()
+
+  set(_protobuf_include_path -I .)
+  foreach(FIL ${ARGN})
+    get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
+    get_filename_component(FIL_WE ${FIL} NAME_WE)
+    file(RELATIVE_PATH REL_FIL ${CMAKE_SOURCE_DIR} ${ABS_FIL})
+    get_filename_component(REL_DIR ${REL_FIL} DIRECTORY)
+    set(RELFIL_WE "${REL_DIR}/${FIL_WE}")
+    
+    add_custom_command(
+      OUTPUT "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.cc"
+             "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.h"
+             "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.cc"
+             "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.h"
+      COMMAND ${_gRPC_PROTOBUF_PROTOC}
+      ARGS --grpc_out=${_gRPC_PROTO_GENS_DIR}
+           --cpp_out=${_gRPC_PROTO_GENS_DIR}
+           --plugin=protoc-gen-grpc=$<TARGET_FILE:grpc_cpp_plugin>
+           ${_protobuf_include_path}
+           ${REL_FIL}
+      DEPENDS ${ABS_FIL} ${_gRPC_PROTOBUF_PROTOC} grpc_cpp_plugin
+      WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+      COMMENT "Running gRPC C++ protocol buffer compiler on ${FIL}"
+      VERBATIM)
+      
+      set_source_files_properties("${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.cc" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.h" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.cc" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.h" PROPERTIES GENERATED TRUE)
+  endforeach()
+endfunction()
+
+
 add_library(gpr
   src/core/lib/profiling/basic_timers.c
   src/core/lib/profiling/stap_timers.c
@@ -217,6 +304,7 @@ add_library(gpr
   src/core/lib/support/wrap_memcpy.c
 )
 
+
 target_include_directories(gpr
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
@@ -224,6 +312,7 @@ target_include_directories(gpr
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
 
@@ -258,6 +347,7 @@ foreach(_hdr
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/slice.h
@@ -273,7 +363,7 @@ foreach(_hdr
   )
 endforeach()
 
-  
+
 if (gRPC_INSTALL)
   install(TARGETS gpr EXPORT gRPCTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -282,7 +372,30 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
+if (gRPC_BUILD_TESTS)
+
+add_library(gpr_test_util
+  test/core/util/test_config.c
+)
+
+
+target_include_directories(gpr_test_util
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_test_util
+  gpr
+)
+
+
+endif (gRPC_BUILD_TESTS)
+
 add_library(grpc
   src/core/lib/surface/init.c
   src/core/lib/channel/channel_args.c
@@ -292,6 +405,8 @@ add_library(grpc
   src/core/lib/channel/connected_channel.c
   src/core/lib/channel/deadline_filter.c
   src/core/lib/channel/handshaker.c
+  src/core/lib/channel/handshaker_factory.c
+  src/core/lib/channel/handshaker_registry.c
   src/core/lib/channel/http_client_filter.c
   src/core/lib/channel/http_server_filter.c
   src/core/lib/channel/message_size_filter.c
@@ -501,6 +616,7 @@ add_library(grpc
   src/core/plugin_registry/grpc_plugin_registry.c
 )
 
+
 target_include_directories(grpc
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
@@ -508,6 +624,7 @@ target_include_directories(grpc
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
 target_link_libraries(grpc
@@ -530,6 +647,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -537,6 +655,7 @@ foreach(_hdr
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/slice.h
@@ -554,7 +673,7 @@ foreach(_hdr
   )
 endforeach()
 
-  
+
 if (gRPC_INSTALL)
   install(TARGETS grpc EXPORT gRPCTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -563,7 +682,7 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
+
 add_library(grpc_cronet
   src/core/lib/surface/init.c
   src/core/lib/channel/channel_args.c
@@ -573,6 +692,8 @@ add_library(grpc_cronet
   src/core/lib/channel/connected_channel.c
   src/core/lib/channel/deadline_filter.c
   src/core/lib/channel/handshaker.c
+  src/core/lib/channel/handshaker_factory.c
+  src/core/lib/channel/handshaker_registry.c
   src/core/lib/channel/http_client_filter.c
   src/core/lib/channel/http_server_filter.c
   src/core/lib/channel/message_size_filter.c
@@ -753,6 +874,7 @@ add_library(grpc_cronet
   src/core/plugin_registry/grpc_cronet_plugin_registry.c
 )
 
+
 target_include_directories(grpc_cronet
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
@@ -760,6 +882,7 @@ target_include_directories(grpc_cronet
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
 target_link_libraries(grpc_cronet
@@ -781,6 +904,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -788,6 +912,7 @@ foreach(_hdr
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/slice.h
@@ -805,7 +930,7 @@ foreach(_hdr
   )
 endforeach()
 
-  
+
 if (gRPC_INSTALL)
   install(TARGETS grpc_cronet EXPORT gRPCTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -814,7 +939,241 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
+if (gRPC_BUILD_TESTS)
+
+add_library(grpc_test_util
+  test/core/end2end/data/client_certs.c
+  test/core/end2end/data/server1_cert.c
+  test/core/end2end/data/server1_key.c
+  test/core/end2end/data/test_root_cert.c
+  test/core/security/oauth2_utils.c
+  test/core/end2end/cq_verifier.c
+  test/core/end2end/fake_resolver.c
+  test/core/end2end/fixtures/http_proxy.c
+  test/core/end2end/fixtures/proxy.c
+  test/core/iomgr/endpoint_tests.c
+  test/core/util/grpc_profiler.c
+  test/core/util/memory_counters.c
+  test/core/util/mock_endpoint.c
+  test/core/util/parse_hexstring.c
+  test/core/util/passthru_endpoint.c
+  test/core/util/port_posix.c
+  test/core/util/port_server_client.c
+  test/core/util/port_uv.c
+  test/core/util/port_windows.c
+  test/core/util/slice_splitter.c
+  src/core/lib/channel/channel_args.c
+  src/core/lib/channel/channel_stack.c
+  src/core/lib/channel/channel_stack_builder.c
+  src/core/lib/channel/compress_filter.c
+  src/core/lib/channel/connected_channel.c
+  src/core/lib/channel/deadline_filter.c
+  src/core/lib/channel/handshaker.c
+  src/core/lib/channel/handshaker_factory.c
+  src/core/lib/channel/handshaker_registry.c
+  src/core/lib/channel/http_client_filter.c
+  src/core/lib/channel/http_server_filter.c
+  src/core/lib/channel/message_size_filter.c
+  src/core/lib/compression/compression.c
+  src/core/lib/compression/message_compress.c
+  src/core/lib/debug/trace.c
+  src/core/lib/http/format_request.c
+  src/core/lib/http/httpcli.c
+  src/core/lib/http/parser.c
+  src/core/lib/iomgr/closure.c
+  src/core/lib/iomgr/combiner.c
+  src/core/lib/iomgr/endpoint.c
+  src/core/lib/iomgr/endpoint_pair_posix.c
+  src/core/lib/iomgr/endpoint_pair_uv.c
+  src/core/lib/iomgr/endpoint_pair_windows.c
+  src/core/lib/iomgr/error.c
+  src/core/lib/iomgr/ev_epoll_linux.c
+  src/core/lib/iomgr/ev_poll_posix.c
+  src/core/lib/iomgr/ev_posix.c
+  src/core/lib/iomgr/exec_ctx.c
+  src/core/lib/iomgr/executor.c
+  src/core/lib/iomgr/iocp_windows.c
+  src/core/lib/iomgr/iomgr.c
+  src/core/lib/iomgr/iomgr_posix.c
+  src/core/lib/iomgr/iomgr_uv.c
+  src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/load_file.c
+  src/core/lib/iomgr/network_status_tracker.c
+  src/core/lib/iomgr/polling_entity.c
+  src/core/lib/iomgr/pollset_set_uv.c
+  src/core/lib/iomgr/pollset_set_windows.c
+  src/core/lib/iomgr/pollset_uv.c
+  src/core/lib/iomgr/pollset_windows.c
+  src/core/lib/iomgr/resolve_address_posix.c
+  src/core/lib/iomgr/resolve_address_uv.c
+  src/core/lib/iomgr/resolve_address_windows.c
+  src/core/lib/iomgr/resource_quota.c
+  src/core/lib/iomgr/sockaddr_utils.c
+  src/core/lib/iomgr/socket_mutator.c
+  src/core/lib/iomgr/socket_utils_common_posix.c
+  src/core/lib/iomgr/socket_utils_linux.c
+  src/core/lib/iomgr/socket_utils_posix.c
+  src/core/lib/iomgr/socket_utils_uv.c
+  src/core/lib/iomgr/socket_utils_windows.c
+  src/core/lib/iomgr/socket_windows.c
+  src/core/lib/iomgr/tcp_client_posix.c
+  src/core/lib/iomgr/tcp_client_uv.c
+  src/core/lib/iomgr/tcp_client_windows.c
+  src/core/lib/iomgr/tcp_posix.c
+  src/core/lib/iomgr/tcp_server_posix.c
+  src/core/lib/iomgr/tcp_server_uv.c
+  src/core/lib/iomgr/tcp_server_windows.c
+  src/core/lib/iomgr/tcp_uv.c
+  src/core/lib/iomgr/tcp_windows.c
+  src/core/lib/iomgr/time_averaged_stats.c
+  src/core/lib/iomgr/timer_generic.c
+  src/core/lib/iomgr/timer_heap.c
+  src/core/lib/iomgr/timer_uv.c
+  src/core/lib/iomgr/udp_server.c
+  src/core/lib/iomgr/unix_sockets_posix.c
+  src/core/lib/iomgr/unix_sockets_posix_noop.c
+  src/core/lib/iomgr/wakeup_fd_cv.c
+  src/core/lib/iomgr/wakeup_fd_eventfd.c
+  src/core/lib/iomgr/wakeup_fd_nospecial.c
+  src/core/lib/iomgr/wakeup_fd_pipe.c
+  src/core/lib/iomgr/wakeup_fd_posix.c
+  src/core/lib/iomgr/workqueue_uv.c
+  src/core/lib/iomgr/workqueue_windows.c
+  src/core/lib/json/json.c
+  src/core/lib/json/json_reader.c
+  src/core/lib/json/json_string.c
+  src/core/lib/json/json_writer.c
+  src/core/lib/slice/percent_encoding.c
+  src/core/lib/slice/slice.c
+  src/core/lib/slice/slice_buffer.c
+  src/core/lib/slice/slice_string_helpers.c
+  src/core/lib/surface/alarm.c
+  src/core/lib/surface/api_trace.c
+  src/core/lib/surface/byte_buffer.c
+  src/core/lib/surface/byte_buffer_reader.c
+  src/core/lib/surface/call.c
+  src/core/lib/surface/call_details.c
+  src/core/lib/surface/call_log_batch.c
+  src/core/lib/surface/channel.c
+  src/core/lib/surface/channel_init.c
+  src/core/lib/surface/channel_ping.c
+  src/core/lib/surface/channel_stack_type.c
+  src/core/lib/surface/completion_queue.c
+  src/core/lib/surface/event_string.c
+  src/core/lib/surface/lame_client.c
+  src/core/lib/surface/metadata_array.c
+  src/core/lib/surface/server.c
+  src/core/lib/surface/validate_metadata.c
+  src/core/lib/surface/version.c
+  src/core/lib/transport/byte_stream.c
+  src/core/lib/transport/connectivity_state.c
+  src/core/lib/transport/mdstr_hash_table.c
+  src/core/lib/transport/metadata.c
+  src/core/lib/transport/metadata_batch.c
+  src/core/lib/transport/pid_controller.c
+  src/core/lib/transport/service_config.c
+  src/core/lib/transport/static_metadata.c
+  src/core/lib/transport/timeout_encoding.c
+  src/core/lib/transport/transport.c
+  src/core/lib/transport/transport_op_string.c
+)
+
+
+target_include_directories(grpc_test_util
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_test_util
+  gpr_test_util
+  gpr
+  grpc
+)
+
+foreach(_hdr
+  include/grpc/byte_buffer.h
+  include/grpc/byte_buffer_reader.h
+  include/grpc/compression.h
+  include/grpc/grpc.h
+  include/grpc/grpc_posix.h
+  include/grpc/grpc_security_constants.h
+  include/grpc/slice.h
+  include/grpc/slice_buffer.h
+  include/grpc/status.h
+  include/grpc/impl/codegen/byte_buffer_reader.h
+  include/grpc/impl/codegen/compression_types.h
+  include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
+  include/grpc/impl/codegen/grpc_types.h
+  include/grpc/impl/codegen/propagation_bits.h
+  include/grpc/impl/codegen/status.h
+  include/grpc/impl/codegen/atm.h
+  include/grpc/impl/codegen/atm_gcc_atomic.h
+  include/grpc/impl/codegen/atm_gcc_sync.h
+  include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/gpr_slice.h
+  include/grpc/impl/codegen/gpr_types.h
+  include/grpc/impl/codegen/port_platform.h
+  include/grpc/impl/codegen/slice.h
+  include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_generic.h
+  include/grpc/impl/codegen/sync_posix.h
+  include/grpc/impl/codegen/sync_windows.h
+)
+  string(REPLACE "include/" "" _path ${_hdr})
+  get_filename_component(_path ${_path} PATH)
+  install(FILES ${_hdr}
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${_path}"
+  )
+endforeach()
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(grpc_test_util_unsecure
+  test/core/end2end/cq_verifier.c
+  test/core/end2end/fake_resolver.c
+  test/core/end2end/fixtures/http_proxy.c
+  test/core/end2end/fixtures/proxy.c
+  test/core/iomgr/endpoint_tests.c
+  test/core/util/grpc_profiler.c
+  test/core/util/memory_counters.c
+  test/core/util/mock_endpoint.c
+  test/core/util/parse_hexstring.c
+  test/core/util/passthru_endpoint.c
+  test/core/util/port_posix.c
+  test/core/util/port_server_client.c
+  test/core/util/port_uv.c
+  test/core/util/port_windows.c
+  test/core/util/slice_splitter.c
+)
+
+
+target_include_directories(grpc_test_util_unsecure
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_test_util_unsecure
+  gpr
+  gpr_test_util
+  grpc_unsecure
+  grpc
+)
+
+
+endif (gRPC_BUILD_TESTS)
+
 add_library(grpc_unsecure
   src/core/lib/surface/init.c
   src/core/lib/surface/init_unsecure.c
@@ -825,6 +1184,8 @@ add_library(grpc_unsecure
   src/core/lib/channel/connected_channel.c
   src/core/lib/channel/deadline_filter.c
   src/core/lib/channel/handshaker.c
+  src/core/lib/channel/handshaker_factory.c
+  src/core/lib/channel/handshaker_registry.c
   src/core/lib/channel/http_client_filter.c
   src/core/lib/channel/http_server_filter.c
   src/core/lib/channel/message_size_filter.c
@@ -1005,6 +1366,7 @@ add_library(grpc_unsecure
   src/core/plugin_registry/grpc_unsecure_plugin_registry.c
 )
 
+
 target_include_directories(grpc_unsecure
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
@@ -1012,6 +1374,7 @@ target_include_directories(grpc_unsecure
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
 target_link_libraries(grpc_unsecure
@@ -1032,6 +1395,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -1039,6 +1403,7 @@ foreach(_hdr
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/slice.h
@@ -1055,7 +1420,7 @@ foreach(_hdr
   )
 endforeach()
 
-  
+
 if (gRPC_INSTALL)
   install(TARGETS grpc_unsecure EXPORT gRPCTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -1064,37 +1429,90 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
-add_library(grpc++
-  src/cpp/client/insecure_credentials.cc
-  src/cpp/client/secure_credentials.cc
-  src/cpp/common/auth_property_iterator.cc
-  src/cpp/common/secure_auth_context.cc
-  src/cpp/common/secure_channel_arguments.cc
-  src/cpp/common/secure_create_auth_context.cc
-  src/cpp/server/insecure_server_credentials.cc
-  src/cpp/server/secure_server_credentials.cc
-  src/cpp/client/channel_cc.cc
-  src/cpp/client/client_context.cc
-  src/cpp/client/create_channel.cc
-  src/cpp/client/create_channel_internal.cc
-  src/cpp/client/create_channel_posix.cc
-  src/cpp/client/credentials_cc.cc
-  src/cpp/client/generic_stub.cc
-  src/cpp/common/channel_arguments.cc
-  src/cpp/common/channel_filter.cc
-  src/cpp/common/completion_queue_cc.cc
-  src/cpp/common/core_codegen.cc
-  src/cpp/common/resource_quota_cc.cc
-  src/cpp/common/rpc_method.cc
-  src/cpp/common/version_cc.cc
-  src/cpp/server/async_generic_service.cc
-  src/cpp/server/create_default_thread_pool.cc
-  src/cpp/server/dynamic_thread_pool.cc
-  src/cpp/server/server_builder.cc
-  src/cpp/server/server_cc.cc
-  src/cpp/server/server_context.cc
-  src/cpp/server/server_credentials.cc
+if (gRPC_BUILD_TESTS)
+
+add_library(reconnect_server
+  test/core/util/reconnect_server.c
+)
+
+
+target_include_directories(reconnect_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(reconnect_server
+  test_tcp_server
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(test_tcp_server
+  test/core/util/test_tcp_server.c
+)
+
+
+target_include_directories(test_tcp_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(test_tcp_server
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+
+endif (gRPC_BUILD_TESTS)
+
+add_library(grpc++
+  src/cpp/client/insecure_credentials.cc
+  src/cpp/client/secure_credentials.cc
+  src/cpp/common/auth_property_iterator.cc
+  src/cpp/common/secure_auth_context.cc
+  src/cpp/common/secure_channel_arguments.cc
+  src/cpp/common/secure_create_auth_context.cc
+  src/cpp/server/insecure_server_credentials.cc
+  src/cpp/server/secure_server_credentials.cc
+  src/cpp/client/channel_cc.cc
+  src/cpp/client/client_context.cc
+  src/cpp/client/create_channel.cc
+  src/cpp/client/create_channel_internal.cc
+  src/cpp/client/create_channel_posix.cc
+  src/cpp/client/credentials_cc.cc
+  src/cpp/client/generic_stub.cc
+  src/cpp/common/channel_arguments.cc
+  src/cpp/common/channel_filter.cc
+  src/cpp/common/completion_queue_cc.cc
+  src/cpp/common/core_codegen.cc
+  src/cpp/common/resource_quota_cc.cc
+  src/cpp/common/rpc_method.cc
+  src/cpp/common/version_cc.cc
+  src/cpp/server/async_generic_service.cc
+  src/cpp/server/create_default_thread_pool.cc
+  src/cpp/server/dynamic_thread_pool.cc
+  src/cpp/server/server_builder.cc
+  src/cpp/server/server_cc.cc
+  src/cpp/server/server_context.cc
+  src/cpp/server/server_credentials.cc
   src/cpp/server/server_posix.cc
   src/cpp/thread_manager/thread_manager.cc
   src/cpp/util/byte_buffer_cc.cc
@@ -1105,6 +1523,7 @@ add_library(grpc++
   src/cpp/codegen/codegen_init.cc
 )
 
+
 target_include_directories(grpc++
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
@@ -1112,6 +1531,7 @@ target_include_directories(grpc++
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
 target_link_libraries(grpc++
@@ -1195,6 +1615,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -1202,6 +1623,7 @@ foreach(_hdr
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/slice.h
@@ -1217,7 +1639,7 @@ foreach(_hdr
   )
 endforeach()
 
-  
+
 if (gRPC_INSTALL)
   install(TARGETS grpc++ EXPORT gRPCTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -1226,7 +1648,7 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
+
 add_library(grpc++_cronet
   src/cpp/client/cronet_credentials.cc
   src/cpp/client/insecure_credentials.cc
@@ -1292,6 +1714,8 @@ add_library(grpc++_cronet
   src/core/lib/channel/connected_channel.c
   src/core/lib/channel/deadline_filter.c
   src/core/lib/channel/handshaker.c
+  src/core/lib/channel/handshaker_factory.c
+  src/core/lib/channel/handshaker_registry.c
   src/core/lib/channel/http_client_filter.c
   src/core/lib/channel/http_server_filter.c
   src/core/lib/channel/message_size_filter.c
@@ -1438,6 +1862,7 @@ add_library(grpc++_cronet
   third_party/nanopb/pb_encode.c
 )
 
+
 target_include_directories(grpc++_cronet
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
@@ -1445,6 +1870,7 @@ target_include_directories(grpc++_cronet
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
 target_link_libraries(grpc++_cronet
@@ -1528,6 +1954,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -1535,6 +1962,7 @@ foreach(_hdr
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/slice.h
@@ -1560,7 +1988,7 @@ foreach(_hdr
   )
 endforeach()
 
-  
+
 if (gRPC_INSTALL)
   install(TARGETS grpc++_cronet EXPORT gRPCTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -1569,10 +1997,59 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
+if (gRPC_BUILD_TESTS)
+
+add_library(grpc++_proto_reflection_desc_db
+  test/cpp/util/proto_reflection_descriptor_database.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.h
+)
+
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/reflection/v1alpha/reflection.proto
+)
+
+target_include_directories(grpc++_proto_reflection_desc_db
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(grpc++_proto_reflection_desc_db
+  grpc++
+)
+
+foreach(_hdr
+  include/grpc++/impl/codegen/config_protobuf.h
+)
+  string(REPLACE "include/" "" _path ${_hdr})
+  get_filename_component(_path ${_path} PATH)
+  install(FILES ${_hdr}
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${_path}"
+  )
+endforeach()
+
+endif (gRPC_BUILD_TESTS)
+
 add_library(grpc++_reflection
   src/cpp/ext/proto_server_reflection.cc
   src/cpp/ext/proto_server_reflection_plugin.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.h
+)
+
+protobuf_generate_grpc_cpp(
   src/proto/grpc/reflection/v1alpha/reflection.proto
 )
 
@@ -1583,6 +2060,8 @@ target_include_directories(grpc++_reflection
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
 
 target_link_libraries(grpc++_reflection
@@ -1599,7 +2078,7 @@ foreach(_hdr
   )
 endforeach()
 
-  
+
 if (gRPC_INSTALL)
   install(TARGETS grpc++_reflection EXPORT gRPCTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -1608,7 +2087,167 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
+if (gRPC_BUILD_TESTS)
+
+add_library(grpc++_test
+  src/cpp/test/server_context_test_spouse.cc
+)
+
+
+target_include_directories(grpc++_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(grpc++_test
+  grpc++
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(grpc++_test_config
+  test/cpp/util/test_config_cc.cc
+)
+
+
+target_include_directories(grpc++_test_config
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(grpc++_test_util
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo_messages.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo_messages.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo_messages.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo_messages.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/duplicate/echo_duplicate.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h
+  test/cpp/end2end/test_service_impl.cc
+  test/cpp/util/byte_buffer_proto_helper.cc
+  test/cpp/util/create_test_channel.cc
+  test/cpp/util/string_ref_helper.cc
+  test/cpp/util/subprocess.cc
+  test/cpp/util/test_credentials_provider.cc
+  src/cpp/codegen/codegen_init.cc
+)
+
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/echo_messages.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/echo.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/duplicate/echo_duplicate.proto
+)
+
+target_include_directories(grpc++_test_util
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(grpc++_test_util
+  grpc++
+  grpc_test_util
+)
+
+foreach(_hdr
+  include/grpc++/impl/codegen/async_stream.h
+  include/grpc++/impl/codegen/async_unary_call.h
+  include/grpc++/impl/codegen/call.h
+  include/grpc++/impl/codegen/call_hook.h
+  include/grpc++/impl/codegen/channel_interface.h
+  include/grpc++/impl/codegen/client_context.h
+  include/grpc++/impl/codegen/client_unary_call.h
+  include/grpc++/impl/codegen/completion_queue.h
+  include/grpc++/impl/codegen/completion_queue_tag.h
+  include/grpc++/impl/codegen/config.h
+  include/grpc++/impl/codegen/core_codegen_interface.h
+  include/grpc++/impl/codegen/create_auth_context.h
+  include/grpc++/impl/codegen/grpc_library.h
+  include/grpc++/impl/codegen/method_handler_impl.h
+  include/grpc++/impl/codegen/rpc_method.h
+  include/grpc++/impl/codegen/rpc_service_method.h
+  include/grpc++/impl/codegen/security/auth_context.h
+  include/grpc++/impl/codegen/serialization_traits.h
+  include/grpc++/impl/codegen/server_context.h
+  include/grpc++/impl/codegen/server_interface.h
+  include/grpc++/impl/codegen/service_type.h
+  include/grpc++/impl/codegen/status.h
+  include/grpc++/impl/codegen/status_code_enum.h
+  include/grpc++/impl/codegen/status_helper.h
+  include/grpc++/impl/codegen/string_ref.h
+  include/grpc++/impl/codegen/stub_options.h
+  include/grpc++/impl/codegen/sync_stream.h
+  include/grpc++/impl/codegen/time.h
+  include/grpc/impl/codegen/byte_buffer_reader.h
+  include/grpc/impl/codegen/compression_types.h
+  include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
+  include/grpc/impl/codegen/grpc_types.h
+  include/grpc/impl/codegen/propagation_bits.h
+  include/grpc/impl/codegen/status.h
+  include/grpc/impl/codegen/atm.h
+  include/grpc/impl/codegen/atm_gcc_atomic.h
+  include/grpc/impl/codegen/atm_gcc_sync.h
+  include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/gpr_slice.h
+  include/grpc/impl/codegen/gpr_types.h
+  include/grpc/impl/codegen/port_platform.h
+  include/grpc/impl/codegen/slice.h
+  include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_generic.h
+  include/grpc/impl/codegen/sync_posix.h
+  include/grpc/impl/codegen/sync_windows.h
+  include/grpc++/impl/codegen/proto_utils.h
+  include/grpc++/impl/codegen/config_protobuf.h
+  include/grpc++/impl/codegen/thrift_serializer.h
+  include/grpc++/impl/codegen/thrift_utils.h
+)
+  string(REPLACE "include/" "" _path ${_hdr})
+  get_filename_component(_path ${_path} PATH)
+  install(FILES ${_hdr}
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${_path}"
+  )
+endforeach()
+
+endif (gRPC_BUILD_TESTS)
+
 add_library(grpc++_unsecure
   src/cpp/client/insecure_credentials.cc
   src/cpp/common/insecure_create_auth_context.cc
@@ -1644,6 +2283,7 @@ add_library(grpc++_unsecure
   src/cpp/codegen/codegen_init.cc
 )
 
+
 target_include_directories(grpc++_unsecure
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
@@ -1651,6 +2291,7 @@ target_include_directories(grpc++_unsecure
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
 target_link_libraries(grpc++_unsecure
@@ -1734,6 +2375,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -1741,6 +2383,7 @@ foreach(_hdr
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/slice.h
@@ -1756,7 +2399,7 @@ foreach(_hdr
   )
 endforeach()
 
-  
+
 if (gRPC_INSTALL)
   install(TARGETS grpc++_unsecure EXPORT gRPCTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -1765,7 +2408,54 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
+if (gRPC_BUILD_TESTS)
+
+add_library(grpc_cli_libs
+  test/cpp/util/cli_call.cc
+  test/cpp/util/cli_credentials.cc
+  test/cpp/util/grpc_tool.cc
+  test/cpp/util/proto_file_parser.cc
+  test/cpp/util/service_describer.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.h
+)
+
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/reflection/v1alpha/reflection.proto
+)
+
+target_include_directories(grpc_cli_libs
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(grpc_cli_libs
+  grpc++_proto_reflection_desc_db
+  grpc++
+)
+
+foreach(_hdr
+  include/grpc++/impl/codegen/config_protobuf.h
+)
+  string(REPLACE "include/" "" _path ${_hdr})
+  get_filename_component(_path ${_path} PATH)
+  install(FILES ${_hdr}
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${_path}"
+  )
+endforeach()
+
+endif (gRPC_BUILD_TESTS)
+
 add_library(grpc_plugin_support
   src/compiler/cpp_generator.cc
   src/compiler/csharp_generator.cc
@@ -1776,6 +2466,7 @@ add_library(grpc_plugin_support
   src/compiler/ruby_generator.cc
 )
 
+
 target_include_directories(grpc_plugin_support
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
@@ -1783,6 +2474,7 @@ target_include_directories(grpc_plugin_support
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
 target_link_libraries(grpc_plugin_support
@@ -1799,7 +2491,7 @@ foreach(_hdr
   )
 endforeach()
 
-  
+
 if (gRPC_INSTALL)
   install(TARGETS grpc_plugin_support EXPORT gRPCTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -1808,393 +2500,9111 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
-add_library(grpc_csharp_ext
-  src/csharp/ext/grpc_csharp_ext.c
+if (gRPC_BUILD_TESTS)
+
+add_library(http2_client_main
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.grpc.pb.h
+  test/cpp/interop/http2_client.cc
+)
+
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/empty.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/messages.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/test.proto
 )
 
-target_include_directories(grpc_csharp_ext
+target_include_directories(http2_client_main
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
 
-target_link_libraries(grpc_csharp_ext
+target_link_libraries(http2_client_main
+  grpc++_test_util
+  grpc_test_util
+  grpc++
   grpc
-  gpr
+  grpc++_test_config
 )
 
 
-  
-if (gRPC_INSTALL)
-  install(TARGETS grpc_csharp_ext EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
+add_library(interop_client_helper
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.h
+  test/cpp/interop/client_helper.cc
+)
 
-add_executable(gen_hpack_tables
-  tools/codegen/core/gen_hpack_tables.c
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/messages.proto
 )
 
-target_include_directories(gen_hpack_tables
+target_include_directories(interop_client_helper
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
-  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
 
-target_link_libraries(gen_hpack_tables
+target_link_libraries(interop_client_helper
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(interop_client_main
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.grpc.pb.h
+  test/cpp/interop/client.cc
+  test/cpp/interop/interop_client.cc
+)
+
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/empty.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/messages.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/test.proto
+)
+
+target_include_directories(interop_client_main
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(interop_client_main
+  interop_client_helper
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(interop_server_helper
+  test/cpp/interop/server_helper.cc
+)
+
+
+target_include_directories(interop_server_helper
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(interop_server_helper
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(interop_server_lib
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/empty.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/test.grpc.pb.h
+  test/cpp/interop/interop_server.cc
+)
+
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/empty.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/messages.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/test.proto
+)
+
+target_include_directories(interop_server_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(interop_server_lib
+  interop_server_helper
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(interop_server_main
+  test/cpp/interop/interop_server_bootstrap.cc
+)
+
+
+target_include_directories(interop_server_main
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(interop_server_main
+  interop_server_lib
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(qps
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/messages.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/payloads.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/payloads.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/payloads.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/payloads.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/stats.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/stats.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/stats.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/stats.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/control.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/control.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/control.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/control.grpc.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/services.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/services.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/services.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/services.grpc.pb.h
+  test/cpp/qps/client_async.cc
+  test/cpp/qps/client_sync.cc
+  test/cpp/qps/driver.cc
+  test/cpp/qps/parse_json.cc
+  test/cpp/qps/qps_worker.cc
+  test/cpp/qps/report.cc
+  test/cpp/qps/server_async.cc
+  test/cpp/qps/server_sync.cc
+  test/cpp/qps/usage_timer.cc
+  test/cpp/util/benchmark_config.cc
+)
+
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/messages.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/payloads.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/stats.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/control.proto
+)
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/testing/services.proto
+)
+
+target_include_directories(qps
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(qps
+  grpc_test_util
+  grpc++_test_util
+  grpc++
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl
+  src/boringssl/err_data.c
+  third_party/boringssl/crypto/aes/aes.c
+  third_party/boringssl/crypto/aes/mode_wrappers.c
+  third_party/boringssl/crypto/asn1/a_bitstr.c
+  third_party/boringssl/crypto/asn1/a_bool.c
+  third_party/boringssl/crypto/asn1/a_bytes.c
+  third_party/boringssl/crypto/asn1/a_d2i_fp.c
+  third_party/boringssl/crypto/asn1/a_dup.c
+  third_party/boringssl/crypto/asn1/a_enum.c
+  third_party/boringssl/crypto/asn1/a_gentm.c
+  third_party/boringssl/crypto/asn1/a_i2d_fp.c
+  third_party/boringssl/crypto/asn1/a_int.c
+  third_party/boringssl/crypto/asn1/a_mbstr.c
+  third_party/boringssl/crypto/asn1/a_object.c
+  third_party/boringssl/crypto/asn1/a_octet.c
+  third_party/boringssl/crypto/asn1/a_print.c
+  third_party/boringssl/crypto/asn1/a_strnid.c
+  third_party/boringssl/crypto/asn1/a_time.c
+  third_party/boringssl/crypto/asn1/a_type.c
+  third_party/boringssl/crypto/asn1/a_utctm.c
+  third_party/boringssl/crypto/asn1/a_utf8.c
+  third_party/boringssl/crypto/asn1/asn1_lib.c
+  third_party/boringssl/crypto/asn1/asn1_par.c
+  third_party/boringssl/crypto/asn1/asn_pack.c
+  third_party/boringssl/crypto/asn1/bio_asn1.c
+  third_party/boringssl/crypto/asn1/bio_ndef.c
+  third_party/boringssl/crypto/asn1/f_enum.c
+  third_party/boringssl/crypto/asn1/f_int.c
+  third_party/boringssl/crypto/asn1/f_string.c
+  third_party/boringssl/crypto/asn1/t_bitst.c
+  third_party/boringssl/crypto/asn1/t_pkey.c
+  third_party/boringssl/crypto/asn1/tasn_dec.c
+  third_party/boringssl/crypto/asn1/tasn_enc.c
+  third_party/boringssl/crypto/asn1/tasn_fre.c
+  third_party/boringssl/crypto/asn1/tasn_new.c
+  third_party/boringssl/crypto/asn1/tasn_prn.c
+  third_party/boringssl/crypto/asn1/tasn_typ.c
+  third_party/boringssl/crypto/asn1/tasn_utl.c
+  third_party/boringssl/crypto/asn1/x_bignum.c
+  third_party/boringssl/crypto/asn1/x_long.c
+  third_party/boringssl/crypto/base64/base64.c
+  third_party/boringssl/crypto/bio/bio.c
+  third_party/boringssl/crypto/bio/bio_mem.c
+  third_party/boringssl/crypto/bio/buffer.c
+  third_party/boringssl/crypto/bio/connect.c
+  third_party/boringssl/crypto/bio/fd.c
+  third_party/boringssl/crypto/bio/file.c
+  third_party/boringssl/crypto/bio/hexdump.c
+  third_party/boringssl/crypto/bio/pair.c
+  third_party/boringssl/crypto/bio/printf.c
+  third_party/boringssl/crypto/bio/socket.c
+  third_party/boringssl/crypto/bio/socket_helper.c
+  third_party/boringssl/crypto/bn/add.c
+  third_party/boringssl/crypto/bn/asm/x86_64-gcc.c
+  third_party/boringssl/crypto/bn/bn.c
+  third_party/boringssl/crypto/bn/bn_asn1.c
+  third_party/boringssl/crypto/bn/cmp.c
+  third_party/boringssl/crypto/bn/convert.c
+  third_party/boringssl/crypto/bn/ctx.c
+  third_party/boringssl/crypto/bn/div.c
+  third_party/boringssl/crypto/bn/exponentiation.c
+  third_party/boringssl/crypto/bn/gcd.c
+  third_party/boringssl/crypto/bn/generic.c
+  third_party/boringssl/crypto/bn/kronecker.c
+  third_party/boringssl/crypto/bn/montgomery.c
+  third_party/boringssl/crypto/bn/mul.c
+  third_party/boringssl/crypto/bn/prime.c
+  third_party/boringssl/crypto/bn/random.c
+  third_party/boringssl/crypto/bn/rsaz_exp.c
+  third_party/boringssl/crypto/bn/shift.c
+  third_party/boringssl/crypto/bn/sqrt.c
+  third_party/boringssl/crypto/buf/buf.c
+  third_party/boringssl/crypto/bytestring/asn1_compat.c
+  third_party/boringssl/crypto/bytestring/ber.c
+  third_party/boringssl/crypto/bytestring/cbb.c
+  third_party/boringssl/crypto/bytestring/cbs.c
+  third_party/boringssl/crypto/chacha/chacha_generic.c
+  third_party/boringssl/crypto/chacha/chacha_vec.c
+  third_party/boringssl/crypto/cipher/aead.c
+  third_party/boringssl/crypto/cipher/cipher.c
+  third_party/boringssl/crypto/cipher/derive_key.c
+  third_party/boringssl/crypto/cipher/e_aes.c
+  third_party/boringssl/crypto/cipher/e_chacha20poly1305.c
+  third_party/boringssl/crypto/cipher/e_des.c
+  third_party/boringssl/crypto/cipher/e_null.c
+  third_party/boringssl/crypto/cipher/e_rc2.c
+  third_party/boringssl/crypto/cipher/e_rc4.c
+  third_party/boringssl/crypto/cipher/e_ssl3.c
+  third_party/boringssl/crypto/cipher/e_tls.c
+  third_party/boringssl/crypto/cipher/tls_cbc.c
+  third_party/boringssl/crypto/cmac/cmac.c
+  third_party/boringssl/crypto/conf/conf.c
+  third_party/boringssl/crypto/cpu-arm.c
+  third_party/boringssl/crypto/cpu-intel.c
+  third_party/boringssl/crypto/crypto.c
+  third_party/boringssl/crypto/curve25519/curve25519.c
+  third_party/boringssl/crypto/curve25519/x25519-x86_64.c
+  third_party/boringssl/crypto/des/des.c
+  third_party/boringssl/crypto/dh/check.c
+  third_party/boringssl/crypto/dh/dh.c
+  third_party/boringssl/crypto/dh/dh_asn1.c
+  third_party/boringssl/crypto/dh/params.c
+  third_party/boringssl/crypto/digest/digest.c
+  third_party/boringssl/crypto/digest/digests.c
+  third_party/boringssl/crypto/directory_posix.c
+  third_party/boringssl/crypto/directory_win.c
+  third_party/boringssl/crypto/dsa/dsa.c
+  third_party/boringssl/crypto/dsa/dsa_asn1.c
+  third_party/boringssl/crypto/ec/ec.c
+  third_party/boringssl/crypto/ec/ec_asn1.c
+  third_party/boringssl/crypto/ec/ec_key.c
+  third_party/boringssl/crypto/ec/ec_montgomery.c
+  third_party/boringssl/crypto/ec/oct.c
+  third_party/boringssl/crypto/ec/p224-64.c
+  third_party/boringssl/crypto/ec/p256-64.c
+  third_party/boringssl/crypto/ec/p256-x86_64.c
+  third_party/boringssl/crypto/ec/simple.c
+  third_party/boringssl/crypto/ec/util-64.c
+  third_party/boringssl/crypto/ec/wnaf.c
+  third_party/boringssl/crypto/ecdh/ecdh.c
+  third_party/boringssl/crypto/ecdsa/ecdsa.c
+  third_party/boringssl/crypto/ecdsa/ecdsa_asn1.c
+  third_party/boringssl/crypto/engine/engine.c
+  third_party/boringssl/crypto/err/err.c
+  third_party/boringssl/crypto/evp/algorithm.c
+  third_party/boringssl/crypto/evp/digestsign.c
+  third_party/boringssl/crypto/evp/evp.c
+  third_party/boringssl/crypto/evp/evp_asn1.c
+  third_party/boringssl/crypto/evp/evp_ctx.c
+  third_party/boringssl/crypto/evp/p_dsa_asn1.c
+  third_party/boringssl/crypto/evp/p_ec.c
+  third_party/boringssl/crypto/evp/p_ec_asn1.c
+  third_party/boringssl/crypto/evp/p_rsa.c
+  third_party/boringssl/crypto/evp/p_rsa_asn1.c
+  third_party/boringssl/crypto/evp/pbkdf.c
+  third_party/boringssl/crypto/evp/sign.c
+  third_party/boringssl/crypto/ex_data.c
+  third_party/boringssl/crypto/hkdf/hkdf.c
+  third_party/boringssl/crypto/hmac/hmac.c
+  third_party/boringssl/crypto/lhash/lhash.c
+  third_party/boringssl/crypto/md4/md4.c
+  third_party/boringssl/crypto/md5/md5.c
+  third_party/boringssl/crypto/mem.c
+  third_party/boringssl/crypto/modes/cbc.c
+  third_party/boringssl/crypto/modes/cfb.c
+  third_party/boringssl/crypto/modes/ctr.c
+  third_party/boringssl/crypto/modes/gcm.c
+  third_party/boringssl/crypto/modes/ofb.c
+  third_party/boringssl/crypto/obj/obj.c
+  third_party/boringssl/crypto/obj/obj_xref.c
+  third_party/boringssl/crypto/pem/pem_all.c
+  third_party/boringssl/crypto/pem/pem_info.c
+  third_party/boringssl/crypto/pem/pem_lib.c
+  third_party/boringssl/crypto/pem/pem_oth.c
+  third_party/boringssl/crypto/pem/pem_pk8.c
+  third_party/boringssl/crypto/pem/pem_pkey.c
+  third_party/boringssl/crypto/pem/pem_x509.c
+  third_party/boringssl/crypto/pem/pem_xaux.c
+  third_party/boringssl/crypto/pkcs8/p5_pbe.c
+  third_party/boringssl/crypto/pkcs8/p5_pbev2.c
+  third_party/boringssl/crypto/pkcs8/p8_pkey.c
+  third_party/boringssl/crypto/pkcs8/pkcs8.c
+  third_party/boringssl/crypto/poly1305/poly1305.c
+  third_party/boringssl/crypto/poly1305/poly1305_arm.c
+  third_party/boringssl/crypto/poly1305/poly1305_vec.c
+  third_party/boringssl/crypto/rand/rand.c
+  third_party/boringssl/crypto/rand/urandom.c
+  third_party/boringssl/crypto/rand/windows.c
+  third_party/boringssl/crypto/rc4/rc4.c
+  third_party/boringssl/crypto/refcount_c11.c
+  third_party/boringssl/crypto/refcount_lock.c
+  third_party/boringssl/crypto/rsa/blinding.c
+  third_party/boringssl/crypto/rsa/padding.c
+  third_party/boringssl/crypto/rsa/rsa.c
+  third_party/boringssl/crypto/rsa/rsa_asn1.c
+  third_party/boringssl/crypto/rsa/rsa_impl.c
+  third_party/boringssl/crypto/sha/sha1.c
+  third_party/boringssl/crypto/sha/sha256.c
+  third_party/boringssl/crypto/sha/sha512.c
+  third_party/boringssl/crypto/stack/stack.c
+  third_party/boringssl/crypto/thread.c
+  third_party/boringssl/crypto/thread_none.c
+  third_party/boringssl/crypto/thread_pthread.c
+  third_party/boringssl/crypto/thread_win.c
+  third_party/boringssl/crypto/time_support.c
+  third_party/boringssl/crypto/x509/a_digest.c
+  third_party/boringssl/crypto/x509/a_sign.c
+  third_party/boringssl/crypto/x509/a_strex.c
+  third_party/boringssl/crypto/x509/a_verify.c
+  third_party/boringssl/crypto/x509/asn1_gen.c
+  third_party/boringssl/crypto/x509/by_dir.c
+  third_party/boringssl/crypto/x509/by_file.c
+  third_party/boringssl/crypto/x509/i2d_pr.c
+  third_party/boringssl/crypto/x509/pkcs7.c
+  third_party/boringssl/crypto/x509/t_crl.c
+  third_party/boringssl/crypto/x509/t_req.c
+  third_party/boringssl/crypto/x509/t_x509.c
+  third_party/boringssl/crypto/x509/t_x509a.c
+  third_party/boringssl/crypto/x509/x509.c
+  third_party/boringssl/crypto/x509/x509_att.c
+  third_party/boringssl/crypto/x509/x509_cmp.c
+  third_party/boringssl/crypto/x509/x509_d2.c
+  third_party/boringssl/crypto/x509/x509_def.c
+  third_party/boringssl/crypto/x509/x509_ext.c
+  third_party/boringssl/crypto/x509/x509_lu.c
+  third_party/boringssl/crypto/x509/x509_obj.c
+  third_party/boringssl/crypto/x509/x509_r2x.c
+  third_party/boringssl/crypto/x509/x509_req.c
+  third_party/boringssl/crypto/x509/x509_set.c
+  third_party/boringssl/crypto/x509/x509_trs.c
+  third_party/boringssl/crypto/x509/x509_txt.c
+  third_party/boringssl/crypto/x509/x509_v3.c
+  third_party/boringssl/crypto/x509/x509_vfy.c
+  third_party/boringssl/crypto/x509/x509_vpm.c
+  third_party/boringssl/crypto/x509/x509cset.c
+  third_party/boringssl/crypto/x509/x509name.c
+  third_party/boringssl/crypto/x509/x509rset.c
+  third_party/boringssl/crypto/x509/x509spki.c
+  third_party/boringssl/crypto/x509/x509type.c
+  third_party/boringssl/crypto/x509/x_algor.c
+  third_party/boringssl/crypto/x509/x_all.c
+  third_party/boringssl/crypto/x509/x_attrib.c
+  third_party/boringssl/crypto/x509/x_crl.c
+  third_party/boringssl/crypto/x509/x_exten.c
+  third_party/boringssl/crypto/x509/x_info.c
+  third_party/boringssl/crypto/x509/x_name.c
+  third_party/boringssl/crypto/x509/x_pkey.c
+  third_party/boringssl/crypto/x509/x_pubkey.c
+  third_party/boringssl/crypto/x509/x_req.c
+  third_party/boringssl/crypto/x509/x_sig.c
+  third_party/boringssl/crypto/x509/x_spki.c
+  third_party/boringssl/crypto/x509/x_val.c
+  third_party/boringssl/crypto/x509/x_x509.c
+  third_party/boringssl/crypto/x509/x_x509a.c
+  third_party/boringssl/crypto/x509v3/pcy_cache.c
+  third_party/boringssl/crypto/x509v3/pcy_data.c
+  third_party/boringssl/crypto/x509v3/pcy_lib.c
+  third_party/boringssl/crypto/x509v3/pcy_map.c
+  third_party/boringssl/crypto/x509v3/pcy_node.c
+  third_party/boringssl/crypto/x509v3/pcy_tree.c
+  third_party/boringssl/crypto/x509v3/v3_akey.c
+  third_party/boringssl/crypto/x509v3/v3_akeya.c
+  third_party/boringssl/crypto/x509v3/v3_alt.c
+  third_party/boringssl/crypto/x509v3/v3_bcons.c
+  third_party/boringssl/crypto/x509v3/v3_bitst.c
+  third_party/boringssl/crypto/x509v3/v3_conf.c
+  third_party/boringssl/crypto/x509v3/v3_cpols.c
+  third_party/boringssl/crypto/x509v3/v3_crld.c
+  third_party/boringssl/crypto/x509v3/v3_enum.c
+  third_party/boringssl/crypto/x509v3/v3_extku.c
+  third_party/boringssl/crypto/x509v3/v3_genn.c
+  third_party/boringssl/crypto/x509v3/v3_ia5.c
+  third_party/boringssl/crypto/x509v3/v3_info.c
+  third_party/boringssl/crypto/x509v3/v3_int.c
+  third_party/boringssl/crypto/x509v3/v3_lib.c
+  third_party/boringssl/crypto/x509v3/v3_ncons.c
+  third_party/boringssl/crypto/x509v3/v3_pci.c
+  third_party/boringssl/crypto/x509v3/v3_pcia.c
+  third_party/boringssl/crypto/x509v3/v3_pcons.c
+  third_party/boringssl/crypto/x509v3/v3_pku.c
+  third_party/boringssl/crypto/x509v3/v3_pmaps.c
+  third_party/boringssl/crypto/x509v3/v3_prn.c
+  third_party/boringssl/crypto/x509v3/v3_purp.c
+  third_party/boringssl/crypto/x509v3/v3_skey.c
+  third_party/boringssl/crypto/x509v3/v3_sxnet.c
+  third_party/boringssl/crypto/x509v3/v3_utl.c
+  third_party/boringssl/ssl/custom_extensions.c
+  third_party/boringssl/ssl/d1_both.c
+  third_party/boringssl/ssl/d1_clnt.c
+  third_party/boringssl/ssl/d1_lib.c
+  third_party/boringssl/ssl/d1_meth.c
+  third_party/boringssl/ssl/d1_pkt.c
+  third_party/boringssl/ssl/d1_srtp.c
+  third_party/boringssl/ssl/d1_srvr.c
+  third_party/boringssl/ssl/dtls_record.c
+  third_party/boringssl/ssl/pqueue/pqueue.c
+  third_party/boringssl/ssl/s3_both.c
+  third_party/boringssl/ssl/s3_clnt.c
+  third_party/boringssl/ssl/s3_enc.c
+  third_party/boringssl/ssl/s3_lib.c
+  third_party/boringssl/ssl/s3_meth.c
+  third_party/boringssl/ssl/s3_pkt.c
+  third_party/boringssl/ssl/s3_srvr.c
+  third_party/boringssl/ssl/ssl_aead_ctx.c
+  third_party/boringssl/ssl/ssl_asn1.c
+  third_party/boringssl/ssl/ssl_buffer.c
+  third_party/boringssl/ssl/ssl_cert.c
+  third_party/boringssl/ssl/ssl_cipher.c
+  third_party/boringssl/ssl/ssl_ecdh.c
+  third_party/boringssl/ssl/ssl_file.c
+  third_party/boringssl/ssl/ssl_lib.c
+  third_party/boringssl/ssl/ssl_rsa.c
+  third_party/boringssl/ssl/ssl_session.c
+  third_party/boringssl/ssl/ssl_stat.c
+  third_party/boringssl/ssl/t1_enc.c
+  third_party/boringssl/ssl/t1_lib.c
+  third_party/boringssl/ssl/tls_record.c
+)
+
+
+target_include_directories(boringssl
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl
+  ${_gRPC_SSL_LIBRARIES}
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_test_util
+  third_party/boringssl/crypto/test/file_test.cc
+  third_party/boringssl/crypto/test/malloc.cc
+  third_party/boringssl/crypto/test/test_util.cc
+)
+
+
+target_include_directories(boringssl_test_util
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_test_util
+  ${_gRPC_SSL_LIBRARIES}
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_aes_test_lib
+  third_party/boringssl/crypto/aes/aes_test.cc
+)
+
+
+target_include_directories(boringssl_aes_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_aes_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_asn1_test_lib
+  third_party/boringssl/crypto/asn1/asn1_test.cc
+)
+
+
+target_include_directories(boringssl_asn1_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_asn1_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_base64_test_lib
+  third_party/boringssl/crypto/base64/base64_test.cc
+)
+
+
+target_include_directories(boringssl_base64_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_base64_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_bio_test_lib
+  third_party/boringssl/crypto/bio/bio_test.cc
+)
+
+
+target_include_directories(boringssl_bio_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_bio_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_bn_test_lib
+  third_party/boringssl/crypto/bn/bn_test.cc
+)
+
+
+target_include_directories(boringssl_bn_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_bn_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_bytestring_test_lib
+  third_party/boringssl/crypto/bytestring/bytestring_test.cc
+)
+
+
+target_include_directories(boringssl_bytestring_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_bytestring_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_aead_test_lib
+  third_party/boringssl/crypto/cipher/aead_test.cc
+)
+
+
+target_include_directories(boringssl_aead_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_aead_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_cipher_test_lib
+  third_party/boringssl/crypto/cipher/cipher_test.cc
+)
+
+
+target_include_directories(boringssl_cipher_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_cipher_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_cmac_test_lib
+  third_party/boringssl/crypto/cmac/cmac_test.cc
+)
+
+
+target_include_directories(boringssl_cmac_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_cmac_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_constant_time_test_lib
+  third_party/boringssl/crypto/constant_time_test.c
+)
+
+
+target_include_directories(boringssl_constant_time_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_constant_time_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_ed25519_test_lib
+  third_party/boringssl/crypto/curve25519/ed25519_test.cc
+)
+
+
+target_include_directories(boringssl_ed25519_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_ed25519_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_x25519_test_lib
+  third_party/boringssl/crypto/curve25519/x25519_test.cc
+)
+
+
+target_include_directories(boringssl_x25519_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_x25519_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_dh_test_lib
+  third_party/boringssl/crypto/dh/dh_test.cc
+)
+
+
+target_include_directories(boringssl_dh_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_dh_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_digest_test_lib
+  third_party/boringssl/crypto/digest/digest_test.cc
+)
+
+
+target_include_directories(boringssl_digest_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_digest_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_dsa_test_lib
+  third_party/boringssl/crypto/dsa/dsa_test.c
+)
+
+
+target_include_directories(boringssl_dsa_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_dsa_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_ec_test_lib
+  third_party/boringssl/crypto/ec/ec_test.cc
+)
+
+
+target_include_directories(boringssl_ec_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_ec_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_example_mul_lib
+  third_party/boringssl/crypto/ec/example_mul.c
+)
+
+
+target_include_directories(boringssl_example_mul_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_example_mul_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_ecdsa_test_lib
+  third_party/boringssl/crypto/ecdsa/ecdsa_test.cc
+)
+
+
+target_include_directories(boringssl_ecdsa_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_ecdsa_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_err_test_lib
+  third_party/boringssl/crypto/err/err_test.cc
+)
+
+
+target_include_directories(boringssl_err_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_err_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_evp_extra_test_lib
+  third_party/boringssl/crypto/evp/evp_extra_test.cc
+)
+
+
+target_include_directories(boringssl_evp_extra_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_evp_extra_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_evp_test_lib
+  third_party/boringssl/crypto/evp/evp_test.cc
+)
+
+
+target_include_directories(boringssl_evp_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_evp_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_pbkdf_test_lib
+  third_party/boringssl/crypto/evp/pbkdf_test.cc
+)
+
+
+target_include_directories(boringssl_pbkdf_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_pbkdf_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_hkdf_test_lib
+  third_party/boringssl/crypto/hkdf/hkdf_test.c
+)
+
+
+target_include_directories(boringssl_hkdf_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_hkdf_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_hmac_test_lib
+  third_party/boringssl/crypto/hmac/hmac_test.cc
+)
+
+
+target_include_directories(boringssl_hmac_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_hmac_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_lhash_test_lib
+  third_party/boringssl/crypto/lhash/lhash_test.c
+)
+
+
+target_include_directories(boringssl_lhash_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_lhash_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_gcm_test_lib
+  third_party/boringssl/crypto/modes/gcm_test.c
+)
+
+
+target_include_directories(boringssl_gcm_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_gcm_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_pkcs12_test_lib
+  third_party/boringssl/crypto/pkcs8/pkcs12_test.cc
+)
+
+
+target_include_directories(boringssl_pkcs12_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_pkcs12_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_pkcs8_test_lib
+  third_party/boringssl/crypto/pkcs8/pkcs8_test.cc
+)
+
+
+target_include_directories(boringssl_pkcs8_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_pkcs8_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_poly1305_test_lib
+  third_party/boringssl/crypto/poly1305/poly1305_test.cc
+)
+
+
+target_include_directories(boringssl_poly1305_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_poly1305_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_refcount_test_lib
+  third_party/boringssl/crypto/refcount_test.c
+)
+
+
+target_include_directories(boringssl_refcount_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_refcount_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_rsa_test_lib
+  third_party/boringssl/crypto/rsa/rsa_test.cc
+)
+
+
+target_include_directories(boringssl_rsa_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_rsa_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_thread_test_lib
+  third_party/boringssl/crypto/thread_test.c
+)
+
+
+target_include_directories(boringssl_thread_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_thread_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_pkcs7_test_lib
+  third_party/boringssl/crypto/x509/pkcs7_test.c
+)
+
+
+target_include_directories(boringssl_pkcs7_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_pkcs7_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_x509_test_lib
+  third_party/boringssl/crypto/x509/x509_test.cc
+)
+
+
+target_include_directories(boringssl_x509_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_x509_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_tab_test_lib
+  third_party/boringssl/crypto/x509v3/tab_test.c
+)
+
+
+target_include_directories(boringssl_tab_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_tab_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_v3name_test_lib
+  third_party/boringssl/crypto/x509v3/v3name_test.c
+)
+
+
+target_include_directories(boringssl_v3name_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_v3name_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_pqueue_test_lib
+  third_party/boringssl/ssl/pqueue/pqueue_test.c
+)
+
+
+target_include_directories(boringssl_pqueue_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(boringssl_pqueue_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(boringssl_ssl_test_lib
+  third_party/boringssl/ssl/ssl_test.cc
+)
+
+
+target_include_directories(boringssl_ssl_test_lib
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_ssl_test_lib
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_test_util
+  boringssl
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(benchmark
+  third_party/benchmark/src/benchmark.cc
+  third_party/benchmark/src/benchmark_register.cc
+  third_party/benchmark/src/colorprint.cc
+  third_party/benchmark/src/commandlineflags.cc
+  third_party/benchmark/src/complexity.cc
+  third_party/benchmark/src/console_reporter.cc
+  third_party/benchmark/src/csv_reporter.cc
+  third_party/benchmark/src/json_reporter.cc
+  third_party/benchmark/src/reporter.cc
+  third_party/benchmark/src/sleep.cc
+  third_party/benchmark/src/string_util.cc
+  third_party/benchmark/src/sysinfo.cc
+  third_party/benchmark/src/timers.cc
+)
+
+
+target_include_directories(benchmark
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(benchmark
+  ${_gRPC_SSL_LIBRARIES}
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(z
+  third_party/zlib/adler32.c
+  third_party/zlib/compress.c
+  third_party/zlib/crc32.c
+  third_party/zlib/deflate.c
+  third_party/zlib/gzclose.c
+  third_party/zlib/gzlib.c
+  third_party/zlib/gzread.c
+  third_party/zlib/gzwrite.c
+  third_party/zlib/infback.c
+  third_party/zlib/inffast.c
+  third_party/zlib/inflate.c
+  third_party/zlib/inftrees.c
+  third_party/zlib/trees.c
+  third_party/zlib/uncompr.c
+  third_party/zlib/zutil.c
+)
+
+
+target_include_directories(z
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(z
+  ${_gRPC_SSL_LIBRARIES}
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(bad_client_test
+  test/core/bad_client/bad_client.c
+)
+
+
+target_include_directories(bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(bad_ssl_test_server
+  test/core/bad_ssl/server_common.c
+)
+
+
+target_include_directories(bad_ssl_test_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(bad_ssl_test_server
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(end2end_tests
+  test/core/end2end/end2end_tests.c
+  test/core/end2end/end2end_test_utils.c
+  test/core/end2end/tests/authority_not_supported.c
+  test/core/end2end/tests/bad_hostname.c
+  test/core/end2end/tests/binary_metadata.c
+  test/core/end2end/tests/call_creds.c
+  test/core/end2end/tests/cancel_after_accept.c
+  test/core/end2end/tests/cancel_after_client_done.c
+  test/core/end2end/tests/cancel_after_invoke.c
+  test/core/end2end/tests/cancel_before_invoke.c
+  test/core/end2end/tests/cancel_in_a_vacuum.c
+  test/core/end2end/tests/cancel_with_status.c
+  test/core/end2end/tests/compressed_payload.c
+  test/core/end2end/tests/connectivity.c
+  test/core/end2end/tests/default_host.c
+  test/core/end2end/tests/disappearing_server.c
+  test/core/end2end/tests/empty_batch.c
+  test/core/end2end/tests/filter_call_init_fails.c
+  test/core/end2end/tests/filter_causes_close.c
+  test/core/end2end/tests/filter_latency.c
+  test/core/end2end/tests/graceful_server_shutdown.c
+  test/core/end2end/tests/high_initial_seqno.c
+  test/core/end2end/tests/hpack_size.c
+  test/core/end2end/tests/idempotent_request.c
+  test/core/end2end/tests/invoke_large_request.c
+  test/core/end2end/tests/large_metadata.c
+  test/core/end2end/tests/load_reporting_hook.c
+  test/core/end2end/tests/max_concurrent_streams.c
+  test/core/end2end/tests/max_message_length.c
+  test/core/end2end/tests/negative_deadline.c
+  test/core/end2end/tests/network_status_change.c
+  test/core/end2end/tests/no_logging.c
+  test/core/end2end/tests/no_op.c
+  test/core/end2end/tests/payload.c
+  test/core/end2end/tests/ping.c
+  test/core/end2end/tests/ping_pong_streaming.c
+  test/core/end2end/tests/registered_call.c
+  test/core/end2end/tests/request_with_flags.c
+  test/core/end2end/tests/request_with_payload.c
+  test/core/end2end/tests/resource_quota_server.c
+  test/core/end2end/tests/server_finishes_request.c
+  test/core/end2end/tests/shutdown_finishes_calls.c
+  test/core/end2end/tests/shutdown_finishes_tags.c
+  test/core/end2end/tests/simple_cacheable_request.c
+  test/core/end2end/tests/simple_delayed_request.c
+  test/core/end2end/tests/simple_metadata.c
+  test/core/end2end/tests/simple_request.c
+  test/core/end2end/tests/streaming_error_response.c
+  test/core/end2end/tests/trailing_metadata.c
+  test/core/end2end/tests/write_buffering.c
+  test/core/end2end/tests/write_buffering_at_end.c
+)
+
+
+target_include_directories(end2end_tests
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(end2end_tests
+  ${_gRPC_SSL_LIBRARIES}
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_library(end2end_nosec_tests
+  test/core/end2end/end2end_nosec_tests.c
+  test/core/end2end/end2end_test_utils.c
+  test/core/end2end/tests/authority_not_supported.c
+  test/core/end2end/tests/bad_hostname.c
+  test/core/end2end/tests/binary_metadata.c
+  test/core/end2end/tests/cancel_after_accept.c
+  test/core/end2end/tests/cancel_after_client_done.c
+  test/core/end2end/tests/cancel_after_invoke.c
+  test/core/end2end/tests/cancel_before_invoke.c
+  test/core/end2end/tests/cancel_in_a_vacuum.c
+  test/core/end2end/tests/cancel_with_status.c
+  test/core/end2end/tests/compressed_payload.c
+  test/core/end2end/tests/connectivity.c
+  test/core/end2end/tests/default_host.c
+  test/core/end2end/tests/disappearing_server.c
+  test/core/end2end/tests/empty_batch.c
+  test/core/end2end/tests/filter_call_init_fails.c
+  test/core/end2end/tests/filter_causes_close.c
+  test/core/end2end/tests/filter_latency.c
+  test/core/end2end/tests/graceful_server_shutdown.c
+  test/core/end2end/tests/high_initial_seqno.c
+  test/core/end2end/tests/hpack_size.c
+  test/core/end2end/tests/idempotent_request.c
+  test/core/end2end/tests/invoke_large_request.c
+  test/core/end2end/tests/large_metadata.c
+  test/core/end2end/tests/load_reporting_hook.c
+  test/core/end2end/tests/max_concurrent_streams.c
+  test/core/end2end/tests/max_message_length.c
+  test/core/end2end/tests/negative_deadline.c
+  test/core/end2end/tests/network_status_change.c
+  test/core/end2end/tests/no_logging.c
+  test/core/end2end/tests/no_op.c
+  test/core/end2end/tests/payload.c
+  test/core/end2end/tests/ping.c
+  test/core/end2end/tests/ping_pong_streaming.c
+  test/core/end2end/tests/registered_call.c
+  test/core/end2end/tests/request_with_flags.c
+  test/core/end2end/tests/request_with_payload.c
+  test/core/end2end/tests/resource_quota_server.c
+  test/core/end2end/tests/server_finishes_request.c
+  test/core/end2end/tests/shutdown_finishes_calls.c
+  test/core/end2end/tests/shutdown_finishes_tags.c
+  test/core/end2end/tests/simple_cacheable_request.c
+  test/core/end2end/tests/simple_delayed_request.c
+  test/core/end2end/tests/simple_metadata.c
+  test/core/end2end/tests/simple_request.c
+  test/core/end2end/tests/streaming_error_response.c
+  test/core/end2end/tests/trailing_metadata.c
+  test/core/end2end/tests/write_buffering.c
+  test/core/end2end/tests/write_buffering_at_end.c
+)
+
+
+target_include_directories(end2end_nosec_tests
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+
+endif (gRPC_BUILD_TESTS)
+
+if (gRPC_BUILD_TESTS)
+
+add_executable(alarm_test
+  test/core/surface/alarm_test.c
+)
+
+target_include_directories(alarm_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(alarm_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(algorithm_test
+  test/core/compression/algorithm_test.c
+)
+
+target_include_directories(algorithm_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(algorithm_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(alloc_test
+  test/core/support/alloc_test.c
+)
+
+target_include_directories(alloc_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(alloc_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(alpn_test
+  test/core/transport/chttp2/alpn_test.c
+)
+
+target_include_directories(alpn_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(alpn_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(bad_server_response_test
+  test/core/end2end/bad_server_response_test.c
+)
+
+target_include_directories(bad_server_response_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(bad_server_response_test
+  test_tcp_server
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(bin_decoder_test
+  test/core/transport/chttp2/bin_decoder_test.c
+)
+
+target_include_directories(bin_decoder_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(bin_decoder_test
+  grpc_test_util
+  grpc
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(bin_encoder_test
+  test/core/transport/chttp2/bin_encoder_test.c
+)
+
+target_include_directories(bin_encoder_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(bin_encoder_test
+  grpc_test_util
+  grpc
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(census_context_test
+  test/core/census/context_test.c
+)
+
+target_include_directories(census_context_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(census_context_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(census_resource_test
+  test/core/census/resource_test.c
+)
+
+target_include_directories(census_resource_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(census_resource_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(census_trace_context_test
+  test/core/census/trace_context_test.c
+)
+
+target_include_directories(census_trace_context_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(census_trace_context_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(channel_create_test
+  test/core/surface/channel_create_test.c
+)
+
+target_include_directories(channel_create_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(channel_create_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(chttp2_hpack_encoder_test
+  test/core/transport/chttp2/hpack_encoder_test.c
+)
+
+target_include_directories(chttp2_hpack_encoder_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(chttp2_hpack_encoder_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(chttp2_status_conversion_test
+  test/core/transport/chttp2/status_conversion_test.c
+)
+
+target_include_directories(chttp2_status_conversion_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(chttp2_status_conversion_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(chttp2_stream_map_test
+  test/core/transport/chttp2/stream_map_test.c
+)
+
+target_include_directories(chttp2_stream_map_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(chttp2_stream_map_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(chttp2_varint_test
+  test/core/transport/chttp2/varint_test.c
+)
+
+target_include_directories(chttp2_varint_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(chttp2_varint_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(combiner_test
+  test/core/iomgr/combiner_test.c
+)
+
+target_include_directories(combiner_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(combiner_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(compression_test
+  test/core/compression/compression_test.c
+)
+
+target_include_directories(compression_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(compression_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(concurrent_connectivity_test
+  test/core/surface/concurrent_connectivity_test.c
+)
+
+target_include_directories(concurrent_connectivity_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(concurrent_connectivity_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(connection_refused_test
+  test/core/end2end/connection_refused_test.c
+)
+
+target_include_directories(connection_refused_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(connection_refused_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(dns_resolver_connectivity_test
+  test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
+)
+
+target_include_directories(dns_resolver_connectivity_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(dns_resolver_connectivity_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(dns_resolver_test
+  test/core/client_channel/resolvers/dns_resolver_test.c
+)
+
+target_include_directories(dns_resolver_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(dns_resolver_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(dualstack_socket_test
+  test/core/end2end/dualstack_socket_test.c
+)
+
+target_include_directories(dualstack_socket_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(dualstack_socket_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(endpoint_pair_test
+  test/core/iomgr/endpoint_pair_test.c
+)
+
+target_include_directories(endpoint_pair_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(endpoint_pair_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(ev_epoll_linux_test
+  test/core/iomgr/ev_epoll_linux_test.c
+)
+
+target_include_directories(ev_epoll_linux_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(ev_epoll_linux_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(fd_conservation_posix_test
+  test/core/iomgr/fd_conservation_posix_test.c
+)
+
+target_include_directories(fd_conservation_posix_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(fd_conservation_posix_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(fd_posix_test
+  test/core/iomgr/fd_posix_test.c
+)
+
+target_include_directories(fd_posix_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(fd_posix_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(fling_client
+  test/core/fling/client.c
+)
+
+target_include_directories(fling_client
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(fling_client
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(fling_server
+  test/core/fling/server.c
+)
+
+target_include_directories(fling_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(fling_server
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(fling_stream_test
+  test/core/fling/fling_stream_test.c
+)
+
+target_include_directories(fling_stream_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(fling_stream_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(fling_test
+  test/core/fling/fling_test.c
+)
+
+target_include_directories(fling_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(fling_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+
+add_executable(gen_hpack_tables
+  tools/codegen/core/gen_hpack_tables.c
+)
+
+target_include_directories(gen_hpack_tables
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gen_hpack_tables
+  gpr
+  grpc
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS gen_hpack_tables EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+
+add_executable(gen_legal_metadata_characters
+  tools/codegen/core/gen_legal_metadata_characters.c
+)
+
+target_include_directories(gen_legal_metadata_characters
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+
+
+if (gRPC_INSTALL)
+  install(TARGETS gen_legal_metadata_characters EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+
+add_executable(gen_percent_encoding_tables
+  tools/codegen/core/gen_percent_encoding_tables.c
+)
+
+target_include_directories(gen_percent_encoding_tables
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+
+
+if (gRPC_INSTALL)
+  install(TARGETS gen_percent_encoding_tables EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+if (gRPC_BUILD_TESTS)
+
+add_executable(goaway_server_test
+  test/core/end2end/goaway_server_test.c
+)
+
+target_include_directories(goaway_server_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(goaway_server_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_avl_test
+  test/core/support/avl_test.c
+)
+
+target_include_directories(gpr_avl_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_avl_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_backoff_test
+  test/core/support/backoff_test.c
+)
+
+target_include_directories(gpr_backoff_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_backoff_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_cmdline_test
+  test/core/support/cmdline_test.c
+)
+
+target_include_directories(gpr_cmdline_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_cmdline_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_cpu_test
+  test/core/support/cpu_test.c
+)
+
+target_include_directories(gpr_cpu_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_cpu_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_env_test
+  test/core/support/env_test.c
+)
+
+target_include_directories(gpr_env_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_env_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_histogram_test
+  test/core/support/histogram_test.c
+)
+
+target_include_directories(gpr_histogram_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_histogram_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_host_port_test
+  test/core/support/host_port_test.c
+)
+
+target_include_directories(gpr_host_port_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_host_port_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_log_test
+  test/core/support/log_test.c
+)
+
+target_include_directories(gpr_log_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_log_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_mpscq_test
+  test/core/support/mpscq_test.c
+)
+
+target_include_directories(gpr_mpscq_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_mpscq_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_stack_lockfree_test
+  test/core/support/stack_lockfree_test.c
+)
+
+target_include_directories(gpr_stack_lockfree_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_stack_lockfree_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_string_test
+  test/core/support/string_test.c
+)
+
+target_include_directories(gpr_string_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_string_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_sync_test
+  test/core/support/sync_test.c
+)
+
+target_include_directories(gpr_sync_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_sync_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_thd_test
+  test/core/support/thd_test.c
+)
+
+target_include_directories(gpr_thd_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_thd_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_time_test
+  test/core/support/time_test.c
+)
+
+target_include_directories(gpr_time_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_time_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_tls_test
+  test/core/support/tls_test.c
+)
+
+target_include_directories(gpr_tls_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_tls_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(gpr_useful_test
+  test/core/support/useful_test.c
+)
+
+target_include_directories(gpr_useful_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(gpr_useful_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_auth_context_test
+  test/core/security/auth_context_test.c
+)
+
+target_include_directories(grpc_auth_context_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_auth_context_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_b64_test
+  test/core/security/b64_test.c
+)
+
+target_include_directories(grpc_b64_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_b64_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_byte_buffer_reader_test
+  test/core/surface/byte_buffer_reader_test.c
+)
+
+target_include_directories(grpc_byte_buffer_reader_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_byte_buffer_reader_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_channel_args_test
+  test/core/channel/channel_args_test.c
+)
+
+target_include_directories(grpc_channel_args_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_channel_args_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_channel_stack_test
+  test/core/channel/channel_stack_test.c
+)
+
+target_include_directories(grpc_channel_stack_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_channel_stack_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_completion_queue_test
+  test/core/surface/completion_queue_test.c
+)
+
+target_include_directories(grpc_completion_queue_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_completion_queue_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+
+add_executable(grpc_create_jwt
+  test/core/security/create_jwt.c
+)
+
+target_include_directories(grpc_create_jwt
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_create_jwt
+  ${_gRPC_SSL_LIBRARIES}
+  grpc
+  gpr
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_create_jwt EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_credentials_test
+  test/core/security/credentials_test.c
+)
+
+target_include_directories(grpc_credentials_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_credentials_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_fetch_oauth2
+  test/core/security/fetch_oauth2.c
+)
+
+target_include_directories(grpc_fetch_oauth2
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_fetch_oauth2
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_invalid_channel_args_test
+  test/core/surface/invalid_channel_args_test.c
+)
+
+target_include_directories(grpc_invalid_channel_args_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_invalid_channel_args_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_json_token_test
+  test/core/security/json_token_test.c
+)
+
+target_include_directories(grpc_json_token_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_json_token_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_jwt_verifier_test
+  test/core/security/jwt_verifier_test.c
+)
+
+target_include_directories(grpc_jwt_verifier_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_jwt_verifier_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+
+add_executable(grpc_print_google_default_creds_token
+  test/core/security/print_google_default_creds_token.c
+)
+
+target_include_directories(grpc_print_google_default_creds_token
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_print_google_default_creds_token
+  grpc
+  gpr
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_print_google_default_creds_token EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_security_connector_test
+  test/core/security/security_connector_test.c
+)
+
+target_include_directories(grpc_security_connector_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_security_connector_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+
+add_executable(grpc_verify_jwt
+  test/core/security/verify_jwt.c
+)
+
+target_include_directories(grpc_verify_jwt
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_verify_jwt
+  grpc
+  gpr
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_verify_jwt EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+if (gRPC_BUILD_TESTS)
+
+add_executable(handshake_client
+  test/core/handshake/client_ssl.c
+)
+
+target_include_directories(handshake_client
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(handshake_client
+  ${_gRPC_SSL_LIBRARIES}
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(handshake_server
+  test/core/handshake/server_ssl.c
+)
+
+target_include_directories(handshake_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(handshake_server
+  ${_gRPC_SSL_LIBRARIES}
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(hpack_parser_test
+  test/core/transport/chttp2/hpack_parser_test.c
+)
+
+target_include_directories(hpack_parser_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(hpack_parser_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(hpack_table_test
+  test/core/transport/chttp2/hpack_table_test.c
+)
+
+target_include_directories(hpack_table_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(hpack_table_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(http_parser_test
+  test/core/http/parser_test.c
+)
+
+target_include_directories(http_parser_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(http_parser_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(httpcli_format_request_test
+  test/core/http/format_request_test.c
+)
+
+target_include_directories(httpcli_format_request_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(httpcli_format_request_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(httpcli_test
+  test/core/http/httpcli_test.c
+)
+
+target_include_directories(httpcli_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(httpcli_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(httpscli_test
+  test/core/http/httpscli_test.c
+)
+
+target_include_directories(httpscli_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(httpscli_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(init_test
+  test/core/surface/init_test.c
+)
+
+target_include_directories(init_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(init_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(internal_api_canary_iomgr_test
+  test/core/internal_api_canaries/iomgr.c
+)
+
+target_include_directories(internal_api_canary_iomgr_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(internal_api_canary_iomgr_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(internal_api_canary_support_test
+  test/core/internal_api_canaries/iomgr.c
+)
+
+target_include_directories(internal_api_canary_support_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(internal_api_canary_support_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(internal_api_canary_transport_test
+  test/core/internal_api_canaries/iomgr.c
+)
+
+target_include_directories(internal_api_canary_transport_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(internal_api_canary_transport_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(invalid_call_argument_test
+  test/core/end2end/invalid_call_argument_test.c
+)
+
+target_include_directories(invalid_call_argument_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(invalid_call_argument_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(json_rewrite
+  test/core/json/json_rewrite.c
+)
+
+target_include_directories(json_rewrite
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(json_rewrite
+  grpc
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(json_rewrite_test
+  test/core/json/json_rewrite_test.c
+)
+
+target_include_directories(json_rewrite_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(json_rewrite_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(json_stream_error_test
+  test/core/json/json_stream_error_test.c
+)
+
+target_include_directories(json_stream_error_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(json_stream_error_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(json_test
+  test/core/json/json_test.c
+)
+
+target_include_directories(json_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(json_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(lame_client_test
+  test/core/surface/lame_client_test.c
+)
+
+target_include_directories(lame_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(lame_client_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(lb_policies_test
+  test/core/client_channel/lb_policies_test.c
+)
+
+target_include_directories(lb_policies_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(lb_policies_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(load_file_test
+  test/core/iomgr/load_file_test.c
+)
+
+target_include_directories(load_file_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(load_file_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(memory_profile_client
+  test/core/memory_usage/client.c
+)
+
+target_include_directories(memory_profile_client
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(memory_profile_client
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(memory_profile_server
+  test/core/memory_usage/server.c
+)
+
+target_include_directories(memory_profile_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(memory_profile_server
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(memory_profile_test
+  test/core/memory_usage/memory_usage_test.c
+)
+
+target_include_directories(memory_profile_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(memory_profile_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(message_compress_test
+  test/core/compression/message_compress_test.c
+)
+
+target_include_directories(message_compress_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(message_compress_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(mlog_test
+  test/core/census/mlog_test.c
+)
+
+target_include_directories(mlog_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(mlog_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(multiple_server_queues_test
+  test/core/end2end/multiple_server_queues_test.c
+)
+
+target_include_directories(multiple_server_queues_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(multiple_server_queues_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(murmur_hash_test
+  test/core/support/murmur_hash_test.c
+)
+
+target_include_directories(murmur_hash_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(murmur_hash_test
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(no_server_test
+  test/core/end2end/no_server_test.c
+)
+
+target_include_directories(no_server_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(no_server_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(percent_encoding_test
+  test/core/slice/percent_encoding_test.c
+)
+
+target_include_directories(percent_encoding_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(percent_encoding_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(resolve_address_test
+  test/core/iomgr/resolve_address_test.c
+)
+
+target_include_directories(resolve_address_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(resolve_address_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(resource_quota_test
+  test/core/iomgr/resource_quota_test.c
+)
+
+target_include_directories(resource_quota_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(resource_quota_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(secure_channel_create_test
+  test/core/surface/secure_channel_create_test.c
+)
+
+target_include_directories(secure_channel_create_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(secure_channel_create_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(secure_endpoint_test
+  test/core/security/secure_endpoint_test.c
+)
+
+target_include_directories(secure_endpoint_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(secure_endpoint_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(sequential_connectivity_test
+  test/core/surface/sequential_connectivity_test.c
+)
+
+target_include_directories(sequential_connectivity_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(sequential_connectivity_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(server_chttp2_test
+  test/core/surface/server_chttp2_test.c
+)
+
+target_include_directories(server_chttp2_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(server_chttp2_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(server_test
+  test/core/surface/server_test.c
+)
+
+target_include_directories(server_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(server_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(set_initial_connect_string_test
+  test/core/client_channel/set_initial_connect_string_test.c
+)
+
+target_include_directories(set_initial_connect_string_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(set_initial_connect_string_test
+  test_tcp_server
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(slice_buffer_test
+  test/core/slice/slice_buffer_test.c
+)
+
+target_include_directories(slice_buffer_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(slice_buffer_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(slice_string_helpers_test
+  test/core/slice/slice_string_helpers_test.c
+)
+
+target_include_directories(slice_string_helpers_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(slice_string_helpers_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(slice_test
+  test/core/slice/slice_test.c
+)
+
+target_include_directories(slice_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(slice_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(sockaddr_resolver_test
+  test/core/client_channel/resolvers/sockaddr_resolver_test.c
+)
+
+target_include_directories(sockaddr_resolver_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(sockaddr_resolver_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(sockaddr_utils_test
+  test/core/iomgr/sockaddr_utils_test.c
+)
+
+target_include_directories(sockaddr_utils_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(sockaddr_utils_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(socket_utils_test
+  test/core/iomgr/socket_utils_test.c
+)
+
+target_include_directories(socket_utils_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(socket_utils_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(tcp_client_posix_test
+  test/core/iomgr/tcp_client_posix_test.c
+)
+
+target_include_directories(tcp_client_posix_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(tcp_client_posix_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(tcp_posix_test
+  test/core/iomgr/tcp_posix_test.c
+)
+
+target_include_directories(tcp_posix_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(tcp_posix_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(tcp_server_posix_test
+  test/core/iomgr/tcp_server_posix_test.c
+)
+
+target_include_directories(tcp_server_posix_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(tcp_server_posix_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(time_averaged_stats_test
+  test/core/iomgr/time_averaged_stats_test.c
+)
+
+target_include_directories(time_averaged_stats_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(time_averaged_stats_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(timeout_encoding_test
+  test/core/transport/timeout_encoding_test.c
+)
+
+target_include_directories(timeout_encoding_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(timeout_encoding_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(timer_heap_test
+  test/core/iomgr/timer_heap_test.c
+)
+
+target_include_directories(timer_heap_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(timer_heap_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(timer_list_test
+  test/core/iomgr/timer_list_test.c
+)
+
+target_include_directories(timer_list_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(timer_list_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(transport_connectivity_state_test
+  test/core/transport/connectivity_state_test.c
+)
+
+target_include_directories(transport_connectivity_state_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(transport_connectivity_state_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(transport_metadata_test
+  test/core/transport/metadata_test.c
+)
+
+target_include_directories(transport_metadata_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(transport_metadata_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(transport_pid_controller_test
+  test/core/transport/pid_controller_test.c
+)
+
+target_include_directories(transport_pid_controller_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(transport_pid_controller_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(transport_security_test
+  test/core/tsi/transport_security_test.c
+)
+
+target_include_directories(transport_security_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(transport_security_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(udp_server_test
+  test/core/iomgr/udp_server_test.c
+)
+
+target_include_directories(udp_server_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(udp_server_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(uri_parser_test
+  test/core/client_channel/uri_parser_test.c
+)
+
+target_include_directories(uri_parser_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(uri_parser_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(wakeup_fd_cv_test
+  test/core/iomgr/wakeup_fd_cv_test.c
+)
+
+target_include_directories(wakeup_fd_cv_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(wakeup_fd_cv_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(alarm_cpp_test
+  test/cpp/common/alarm_cpp_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(alarm_cpp_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(alarm_cpp_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(async_end2end_test
+  test/cpp/end2end/async_end2end_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(async_end2end_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(async_end2end_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(auth_property_iterator_test
+  test/cpp/common/auth_property_iterator_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(auth_property_iterator_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(auth_property_iterator_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(bm_fullstack
+  test/cpp/microbenchmarks/bm_fullstack.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(bm_fullstack
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(bm_fullstack
+  benchmark
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(channel_arguments_test
+  test/cpp/common/channel_arguments_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(channel_arguments_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(channel_arguments_test
+  grpc++
+  grpc
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(channel_filter_test
+  test/cpp/common/channel_filter_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(channel_filter_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(channel_filter_test
+  grpc++
+  grpc
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(cli_call_test
+  test/cpp/util/cli_call_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(cli_call_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(cli_call_test
+  grpc_cli_libs
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(client_crash_test
+  test/cpp/end2end/client_crash_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(client_crash_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(client_crash_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(client_crash_test_server
+  test/cpp/end2end/client_crash_test_server.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(client_crash_test_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(client_crash_test_server
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(codegen_test_full
+  src/proto/grpc/testing/control.proto
+  src/proto/grpc/testing/messages.proto
+  src/proto/grpc/testing/payloads.proto
+  src/proto/grpc/testing/services.proto
+  src/proto/grpc/testing/stats.proto
+  test/cpp/codegen/codegen_test_full.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(codegen_test_full
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(codegen_test_full
+  grpc++
+  grpc
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(codegen_test_minimal
+  src/proto/grpc/testing/control.proto
+  src/proto/grpc/testing/messages.proto
+  src/proto/grpc/testing/payloads.proto
+  src/proto/grpc/testing/services.proto
+  src/proto/grpc/testing/stats.proto
+  test/cpp/codegen/codegen_test_minimal.cc
+  src/cpp/codegen/codegen_init.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(codegen_test_minimal
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(codegen_test_minimal
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(credentials_test
+  test/cpp/client/credentials_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(credentials_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(credentials_test
+  grpc++
+  grpc
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(cxx_byte_buffer_test
+  test/cpp/util/byte_buffer_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(cxx_byte_buffer_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(cxx_byte_buffer_test
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(cxx_slice_test
+  test/cpp/util/slice_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(cxx_slice_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(cxx_slice_test
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(cxx_string_ref_test
+  test/cpp/util/string_ref_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(cxx_string_ref_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(cxx_string_ref_test
+  grpc++
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(cxx_time_test
+  test/cpp/util/time_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(cxx_time_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(cxx_time_test
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(end2end_test
+  test/cpp/end2end/end2end_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(end2end_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(end2end_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(filter_end2end_test
+  test/cpp/end2end/filter_end2end_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(filter_end2end_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(filter_end2end_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(generic_end2end_test
+  test/cpp/end2end/generic_end2end_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(generic_end2end_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(generic_end2end_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(golden_file_test
+  src/proto/grpc/testing/compiler_test.proto
+  test/cpp/codegen/golden_file_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(golden_file_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(golden_file_test
+  grpc++
+  grpc
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_cli
+  test/cpp/util/grpc_cli.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(grpc_cli
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(grpc_cli
+  grpc_cli_libs
+  grpc++_proto_reflection_desc_db
+  grpc++
+  grpc
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+
+add_executable(grpc_cpp_plugin
+  src/compiler/cpp_plugin.cc
+)
+
+target_include_directories(grpc_cpp_plugin
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_cpp_plugin
+  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
+  grpc_plugin_support
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_cpp_plugin EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+
+add_executable(grpc_csharp_plugin
+  src/compiler/csharp_plugin.cc
+)
+
+target_include_directories(grpc_csharp_plugin
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_csharp_plugin
+  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
+  grpc_plugin_support
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_csharp_plugin EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+
+add_executable(grpc_node_plugin
+  src/compiler/node_plugin.cc
+)
+
+target_include_directories(grpc_node_plugin
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_node_plugin
+  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
+  grpc_plugin_support
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_node_plugin EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+
+add_executable(grpc_objective_c_plugin
+  src/compiler/objective_c_plugin.cc
+)
+
+target_include_directories(grpc_objective_c_plugin
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_objective_c_plugin
+  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
+  grpc_plugin_support
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_objective_c_plugin EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+
+add_executable(grpc_php_plugin
+  src/compiler/php_plugin.cc
+)
+
+target_include_directories(grpc_php_plugin
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_php_plugin
+  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
+  grpc_plugin_support
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_php_plugin EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+
+add_executable(grpc_python_plugin
+  src/compiler/python_plugin.cc
+)
+
+target_include_directories(grpc_python_plugin
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_python_plugin
+  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
+  grpc_plugin_support
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_python_plugin EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+
+add_executable(grpc_ruby_plugin
+  src/compiler/ruby_plugin.cc
+)
+
+target_include_directories(grpc_ruby_plugin
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_ruby_plugin
+  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
+  grpc_plugin_support
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS grpc_ruby_plugin EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpc_tool_test
+  src/proto/grpc/testing/echo.proto
+  src/proto/grpc/testing/echo_messages.proto
+  test/cpp/util/grpc_tool_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(grpc_tool_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(grpc_tool_test
+  grpc_cli_libs
+  grpc++_proto_reflection_desc_db
+  grpc++_reflection
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpclb_api_test
+  src/proto/grpc/lb/v1/load_balancer.proto
+  test/cpp/grpclb/grpclb_api_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(grpclb_api_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(grpclb_api_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(grpclb_test
+  src/proto/grpc/lb/v1/load_balancer.proto
+  test/cpp/grpclb/grpclb_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(grpclb_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(grpclb_test
+  gpr
+  gpr_test_util
+  grpc
+  grpc++
+  grpc++_test_util
+  grpc_test_util
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(http2_client
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(http2_client
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(http2_client
+  http2_client_main
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(hybrid_end2end_test
+  test/cpp/end2end/hybrid_end2end_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(hybrid_end2end_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(hybrid_end2end_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(interop_client
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(interop_client
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(interop_client
+  interop_client_main
+  interop_client_helper
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(interop_server
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(interop_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(interop_server
+  interop_server_main
+  interop_server_helper
+  interop_server_lib
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(interop_test
+  test/cpp/interop/interop_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(interop_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(interop_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(json_run_localhost
+  test/cpp/qps/json_run_localhost.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(json_run_localhost
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(json_run_localhost
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(metrics_client
+  src/proto/grpc/testing/metrics.proto
+  test/cpp/interop/metrics_client.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(metrics_client
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(metrics_client
+  grpc++
+  grpc
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(mock_test
+  test/cpp/end2end/mock_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(mock_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(mock_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(noop-benchmark
+  test/cpp/microbenchmarks/noop-benchmark.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(noop-benchmark
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(noop-benchmark
+  benchmark
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(proto_server_reflection_test
+  test/cpp/end2end/proto_server_reflection_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(proto_server_reflection_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(proto_server_reflection_test
+  grpc++_proto_reflection_desc_db
+  grpc++_reflection
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(qps_interarrival_test
+  test/cpp/qps/qps_interarrival_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(qps_interarrival_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(qps_interarrival_test
+  qps
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(qps_json_driver
+  test/cpp/qps/qps_json_driver.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(qps_json_driver
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(qps_json_driver
+  qps
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(qps_openloop_test
+  test/cpp/qps/qps_openloop_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(qps_openloop_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(qps_openloop_test
+  qps
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(qps_worker
+  test/cpp/qps/worker.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(qps_worker
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(qps_worker
+  qps
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(reconnect_interop_client
+  src/proto/grpc/testing/empty.proto
+  src/proto/grpc/testing/messages.proto
+  src/proto/grpc/testing/test.proto
+  test/cpp/interop/reconnect_interop_client.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(reconnect_interop_client
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(reconnect_interop_client
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(reconnect_interop_server
+  src/proto/grpc/testing/empty.proto
+  src/proto/grpc/testing/messages.proto
+  src/proto/grpc/testing/test.proto
+  test/cpp/interop/reconnect_interop_server.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(reconnect_interop_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(reconnect_interop_server
+  reconnect_server
+  test_tcp_server
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(round_robin_end2end_test
+  test/cpp/end2end/round_robin_end2end_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(round_robin_end2end_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(round_robin_end2end_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(secure_auth_context_test
+  test/cpp/common/secure_auth_context_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(secure_auth_context_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(secure_auth_context_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(secure_sync_unary_ping_pong_test
+  test/cpp/qps/secure_sync_unary_ping_pong_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(secure_sync_unary_ping_pong_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(secure_sync_unary_ping_pong_test
+  qps
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(server_builder_plugin_test
+  test/cpp/end2end/server_builder_plugin_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(server_builder_plugin_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(server_builder_plugin_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(server_context_test_spouse_test
+  test/cpp/test/server_context_test_spouse_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(server_context_test_spouse_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(server_context_test_spouse_test
+  grpc_test_util
+  grpc++_test
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(server_crash_test
+  test/cpp/end2end/server_crash_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(server_crash_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(server_crash_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(server_crash_test_client
+  test/cpp/end2end/server_crash_test_client.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(server_crash_test_client
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(server_crash_test_client
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(shutdown_test
+  test/cpp/end2end/shutdown_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(shutdown_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(shutdown_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(status_test
+  test/cpp/util/status_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(status_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(status_test
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(streaming_throughput_test
+  test/cpp/end2end/streaming_throughput_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(streaming_throughput_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(streaming_throughput_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(stress_test
+  src/proto/grpc/testing/empty.proto
+  src/proto/grpc/testing/messages.proto
+  src/proto/grpc/testing/metrics.proto
+  src/proto/grpc/testing/test.proto
+  test/cpp/interop/client_helper.cc
+  test/cpp/interop/interop_client.cc
+  test/cpp/interop/stress_interop_client.cc
+  test/cpp/interop/stress_test.cc
+  test/cpp/util/metrics_server.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(stress_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(stress_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(thread_manager_test
+  test/cpp/thread_manager/thread_manager_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(thread_manager_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(thread_manager_test
+  grpc++
+  grpc
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(thread_stress_test
+  test/cpp/end2end/thread_stress_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(thread_stress_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(thread_stress_test
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_aes_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_aes_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_aes_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_aes_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_asn1_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_asn1_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_asn1_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_asn1_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_base64_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_base64_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_base64_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_base64_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_bio_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_bio_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_bio_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_bio_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_bn_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_bn_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_bn_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_bn_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_bytestring_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_bytestring_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_bytestring_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_bytestring_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_aead_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_aead_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_aead_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_aead_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_cipher_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_cipher_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_cipher_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_cipher_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_cmac_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_cmac_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_cmac_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_cmac_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_constant_time_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_constant_time_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_constant_time_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_constant_time_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_ed25519_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_ed25519_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_ed25519_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_ed25519_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_x25519_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_x25519_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_x25519_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_x25519_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_dh_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_dh_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_dh_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_dh_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_digest_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_digest_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_digest_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_digest_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_dsa_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_dsa_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_dsa_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_dsa_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_ec_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_ec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_ec_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_ec_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_example_mul
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_example_mul
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_example_mul
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_example_mul_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_ecdsa_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_ecdsa_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_ecdsa_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_ecdsa_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_err_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_err_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_err_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_err_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_evp_extra_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_evp_extra_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_evp_extra_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_evp_extra_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_evp_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_evp_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_evp_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_evp_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_pbkdf_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_pbkdf_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_pbkdf_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_pbkdf_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_hkdf_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_hkdf_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_hkdf_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_hkdf_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_hmac_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_hmac_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_hmac_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_hmac_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_lhash_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_lhash_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_lhash_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_lhash_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_gcm_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_gcm_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_gcm_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_gcm_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_pkcs12_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_pkcs12_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_pkcs12_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_pkcs12_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_pkcs8_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_pkcs8_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_pkcs8_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_pkcs8_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_poly1305_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_poly1305_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_poly1305_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_poly1305_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_refcount_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_refcount_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_refcount_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_refcount_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_rsa_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_rsa_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_rsa_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_rsa_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_thread_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_thread_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_thread_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_thread_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_pkcs7_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_pkcs7_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_pkcs7_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_pkcs7_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_x509_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_x509_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_x509_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_x509_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_tab_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_tab_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_tab_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_tab_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_v3name_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_v3name_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_v3name_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_v3name_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_pqueue_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_pqueue_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_pqueue_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_pqueue_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(boringssl_ssl_test
+  third_party/googletest/src/gtest-all.cc
+)
+
+target_include_directories(boringssl_ssl_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+)
+
+target_link_libraries(boringssl_ssl_test
+  ${_gRPC_SSL_LIBRARIES}
+  boringssl_ssl_test_lib
+  boringssl_test_util
+  boringssl
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(badreq_bad_client_test
+  test/core/bad_client/tests/badreq.c
+)
+
+target_include_directories(badreq_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(badreq_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(connection_prefix_bad_client_test
+  test/core/bad_client/tests/connection_prefix.c
+)
+
+target_include_directories(connection_prefix_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(connection_prefix_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(head_of_line_blocking_bad_client_test
+  test/core/bad_client/tests/head_of_line_blocking.c
+)
+
+target_include_directories(head_of_line_blocking_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(head_of_line_blocking_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(headers_bad_client_test
+  test/core/bad_client/tests/headers.c
+)
+
+target_include_directories(headers_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(headers_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(initial_settings_frame_bad_client_test
+  test/core/bad_client/tests/initial_settings_frame.c
+)
+
+target_include_directories(initial_settings_frame_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(initial_settings_frame_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(large_metadata_bad_client_test
+  test/core/bad_client/tests/large_metadata.c
+)
+
+target_include_directories(large_metadata_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(large_metadata_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(server_registered_method_bad_client_test
+  test/core/bad_client/tests/server_registered_method.c
+)
+
+target_include_directories(server_registered_method_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(server_registered_method_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(simple_request_bad_client_test
+  test/core/bad_client/tests/simple_request.c
+)
+
+target_include_directories(simple_request_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(simple_request_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(unknown_frame_bad_client_test
+  test/core/bad_client/tests/unknown_frame.c
+)
+
+target_include_directories(unknown_frame_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(unknown_frame_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(window_overflow_bad_client_test
+  test/core/bad_client/tests/window_overflow.c
+)
+
+target_include_directories(window_overflow_bad_client_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(window_overflow_bad_client_test
+  ${_gRPC_SSL_LIBRARIES}
+  bad_client_test
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(bad_ssl_cert_server
+  test/core/bad_ssl/servers/cert.c
+)
+
+target_include_directories(bad_ssl_cert_server
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(bad_ssl_cert_server
+  bad_ssl_test_server
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(bad_ssl_cert_test
+  test/core/bad_ssl/bad_ssl_test.c
+)
+
+target_include_directories(bad_ssl_cert_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(bad_ssl_cert_test
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_census_test
+  test/core/end2end/fixtures/h2_census.c
+)
+
+target_include_directories(h2_census_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_census_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_compress_test
+  test/core/end2end/fixtures/h2_compress.c
+)
+
+target_include_directories(h2_compress_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_compress_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_fakesec_test
+  test/core/end2end/fixtures/h2_fakesec.c
+)
+
+target_include_directories(h2_fakesec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_fakesec_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_fd_test
+  test/core/end2end/fixtures/h2_fd.c
+)
+
+target_include_directories(h2_fd_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_fd_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_full_test
+  test/core/end2end/fixtures/h2_full.c
+)
+
+target_include_directories(h2_full_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_full_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_full+pipe_test
+  test/core/end2end/fixtures/h2_full+pipe.c
+)
+
+target_include_directories(h2_full+pipe_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_full+pipe_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_full+trace_test
+  test/core/end2end/fixtures/h2_full+trace.c
+)
+
+target_include_directories(h2_full+trace_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_full+trace_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_http_proxy_test
+  test/core/end2end/fixtures/h2_http_proxy.c
+)
+
+target_include_directories(h2_http_proxy_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_http_proxy_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_load_reporting_test
+  test/core/end2end/fixtures/h2_load_reporting.c
+)
+
+target_include_directories(h2_load_reporting_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_load_reporting_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_oauth2_test
+  test/core/end2end/fixtures/h2_oauth2.c
+)
+
+target_include_directories(h2_oauth2_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_oauth2_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_proxy_test
+  test/core/end2end/fixtures/h2_proxy.c
+)
+
+target_include_directories(h2_proxy_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_proxy_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_sockpair_test
+  test/core/end2end/fixtures/h2_sockpair.c
+)
+
+target_include_directories(h2_sockpair_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_sockpair_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_sockpair+trace_test
+  test/core/end2end/fixtures/h2_sockpair+trace.c
+)
+
+target_include_directories(h2_sockpair+trace_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_sockpair+trace_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_sockpair_1byte_test
+  test/core/end2end/fixtures/h2_sockpair_1byte.c
+)
+
+target_include_directories(h2_sockpair_1byte_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_sockpair_1byte_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_ssl_test
+  test/core/end2end/fixtures/h2_ssl.c
+)
+
+target_include_directories(h2_ssl_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_ssl_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_ssl_cert_test
+  test/core/end2end/fixtures/h2_ssl_cert.c
+)
+
+target_include_directories(h2_ssl_cert_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_ssl_cert_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_ssl_proxy_test
+  test/core/end2end/fixtures/h2_ssl_proxy.c
+)
+
+target_include_directories(h2_ssl_proxy_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_ssl_proxy_test
+  end2end_tests
+  grpc_test_util
+  grpc
+  gpr_test_util
   gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_uds_test
+  test/core/end2end/fixtures/h2_uds.c
+)
+
+target_include_directories(h2_uds_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_uds_test
+  end2end_tests
+  grpc_test_util
   grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_census_nosec_test
+  test/core/end2end/fixtures/h2_census.c
+)
+
+target_include_directories(h2_census_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_census_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_compress_nosec_test
+  test/core/end2end/fixtures/h2_compress.c
+)
+
+target_include_directories(h2_compress_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_compress_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_fd_nosec_test
+  test/core/end2end/fixtures/h2_fd.c
+)
+
+target_include_directories(h2_fd_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_fd_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_full_nosec_test
+  test/core/end2end/fixtures/h2_full.c
+)
+
+target_include_directories(h2_full_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_full_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_full+pipe_nosec_test
+  test/core/end2end/fixtures/h2_full+pipe.c
+)
+
+target_include_directories(h2_full+pipe_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_full+pipe_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_full+trace_nosec_test
+  test/core/end2end/fixtures/h2_full+trace.c
+)
+
+target_include_directories(h2_full+trace_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_full+trace_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_http_proxy_nosec_test
+  test/core/end2end/fixtures/h2_http_proxy.c
+)
+
+target_include_directories(h2_http_proxy_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_http_proxy_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_load_reporting_nosec_test
+  test/core/end2end/fixtures/h2_load_reporting.c
+)
+
+target_include_directories(h2_load_reporting_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_load_reporting_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(h2_proxy_nosec_test
+  test/core/end2end/fixtures/h2_proxy.c
+)
+
+target_include_directories(h2_proxy_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
+target_link_libraries(h2_proxy_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
 
-if (gRPC_INSTALL)
-  install(TARGETS gen_hpack_tables EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-add_executable(gen_legal_metadata_characters
-  tools/codegen/core/gen_legal_metadata_characters.c
+add_executable(h2_sockpair_nosec_test
+  test/core/end2end/fixtures/h2_sockpair.c
 )
 
-target_include_directories(gen_legal_metadata_characters
+target_include_directories(h2_sockpair_nosec_test
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_sockpair_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
+add_executable(h2_sockpair+trace_nosec_test
+  test/core/end2end/fixtures/h2_sockpair+trace.c
+)
 
-if (gRPC_INSTALL)
-  install(TARGETS gen_legal_metadata_characters EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
+target_include_directories(h2_sockpair+trace_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(h2_sockpair+trace_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-add_executable(gen_percent_encoding_tables
-  tools/codegen/core/gen_percent_encoding_tables.c
+add_executable(h2_sockpair_1byte_nosec_test
+  test/core/end2end/fixtures/h2_sockpair_1byte.c
 )
 
-target_include_directories(gen_percent_encoding_tables
+target_include_directories(h2_sockpair_1byte_nosec_test
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
+target_link_libraries(h2_sockpair_1byte_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
+)
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS gen_percent_encoding_tables EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
+add_executable(h2_uds_nosec_test
+  test/core/end2end/fixtures/h2_uds.c
+)
 
+target_include_directories(h2_uds_nosec_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
 
-add_executable(grpc_create_jwt
-  test/core/security/create_jwt.c
+target_link_libraries(h2_uds_nosec_test
+  end2end_nosec_tests
+  grpc_test_util_unsecure
+  grpc_unsecure
+  gpr_test_util
+  gpr
 )
 
-target_include_directories(grpc_create_jwt
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(api_fuzzer_one_entry
+  test/core/end2end/fuzzers/api_fuzzer.c
+  test/core/util/one_corpus_entry_fuzzer.c
+)
+
+target_include_directories(api_fuzzer_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_create_jwt
-  ${_gRPC_SSL_LIBRARIES}
+target_link_libraries(api_fuzzer_one_entry
+  grpc_test_util
   grpc
+  gpr_test_util
   gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_create_jwt EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
-
-add_executable(grpc_print_google_default_creds_token
-  test/core/security/print_google_default_creds_token.c
+add_executable(client_fuzzer_one_entry
+  test/core/end2end/fuzzers/client_fuzzer.c
+  test/core/util/one_corpus_entry_fuzzer.c
 )
 
-target_include_directories(grpc_print_google_default_creds_token
+target_include_directories(client_fuzzer_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_print_google_default_creds_token
+target_link_libraries(client_fuzzer_one_entry
+  grpc_test_util
   grpc
+  gpr_test_util
   gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_print_google_default_creds_token EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
-
-add_executable(grpc_verify_jwt
-  test/core/security/verify_jwt.c
+add_executable(hpack_parser_fuzzer_test_one_entry
+  test/core/transport/chttp2/hpack_parser_fuzzer_test.c
+  test/core/util/one_corpus_entry_fuzzer.c
 )
 
-target_include_directories(grpc_verify_jwt
+target_include_directories(hpack_parser_fuzzer_test_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_verify_jwt
+target_link_libraries(hpack_parser_fuzzer_test_one_entry
+  grpc_test_util
   grpc
+  gpr_test_util
   gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_verify_jwt EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
-
-add_executable(grpc_cpp_plugin
-  src/compiler/cpp_plugin.cc
+add_executable(http_request_fuzzer_test_one_entry
+  test/core/http/request_fuzzer.c
+  test/core/util/one_corpus_entry_fuzzer.c
 )
 
-target_include_directories(grpc_cpp_plugin
+target_include_directories(http_request_fuzzer_test_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_cpp_plugin
-  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
-  grpc_plugin_support
+target_link_libraries(http_request_fuzzer_test_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_cpp_plugin EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
-
-add_executable(grpc_csharp_plugin
-  src/compiler/csharp_plugin.cc
+add_executable(http_response_fuzzer_test_one_entry
+  test/core/http/response_fuzzer.c
+  test/core/util/one_corpus_entry_fuzzer.c
 )
 
-target_include_directories(grpc_csharp_plugin
+target_include_directories(http_response_fuzzer_test_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_csharp_plugin
-  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
-  grpc_plugin_support
+target_link_libraries(http_response_fuzzer_test_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_csharp_plugin EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
-
-add_executable(grpc_node_plugin
-  src/compiler/node_plugin.cc
+add_executable(json_fuzzer_test_one_entry
+  test/core/json/fuzzer.c
+  test/core/util/one_corpus_entry_fuzzer.c
 )
 
-target_include_directories(grpc_node_plugin
+target_include_directories(json_fuzzer_test_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_node_plugin
-  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
-  grpc_plugin_support
+target_link_libraries(json_fuzzer_test_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_node_plugin EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
-
-add_executable(grpc_objective_c_plugin
-  src/compiler/objective_c_plugin.cc
+add_executable(nanopb_fuzzer_response_test_one_entry
+  test/core/nanopb/fuzzer_response.c
+  test/core/util/one_corpus_entry_fuzzer.c
 )
 
-target_include_directories(grpc_objective_c_plugin
+target_include_directories(nanopb_fuzzer_response_test_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_objective_c_plugin
-  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
-  grpc_plugin_support
+target_link_libraries(nanopb_fuzzer_response_test_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_objective_c_plugin EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
-
-add_executable(grpc_php_plugin
-  src/compiler/php_plugin.cc
+add_executable(nanopb_fuzzer_serverlist_test_one_entry
+  test/core/nanopb/fuzzer_serverlist.c
+  test/core/util/one_corpus_entry_fuzzer.c
 )
 
-target_include_directories(grpc_php_plugin
+target_include_directories(nanopb_fuzzer_serverlist_test_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_php_plugin
-  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
-  grpc_plugin_support
+target_link_libraries(nanopb_fuzzer_serverlist_test_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_php_plugin EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
+add_executable(percent_decode_fuzzer_one_entry
+  test/core/slice/percent_decode_fuzzer.c
+  test/core/util/one_corpus_entry_fuzzer.c
+)
+
+target_include_directories(percent_decode_fuzzer_one_entry
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
 
+target_link_libraries(percent_decode_fuzzer_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
 
-add_executable(grpc_python_plugin
-  src/compiler/python_plugin.cc
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(percent_encode_fuzzer_one_entry
+  test/core/slice/percent_encode_fuzzer.c
+  test/core/util/one_corpus_entry_fuzzer.c
 )
 
-target_include_directories(grpc_python_plugin
+target_include_directories(percent_encode_fuzzer_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_python_plugin
-  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
-  grpc_plugin_support
+target_link_libraries(percent_encode_fuzzer_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_python_plugin EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
+add_executable(server_fuzzer_one_entry
+  test/core/end2end/fuzzers/server_fuzzer.c
+  test/core/util/one_corpus_entry_fuzzer.c
+)
 
+target_include_directories(server_fuzzer_one_entry
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
 
-add_executable(grpc_ruby_plugin
-  src/compiler/ruby_plugin.cc
+target_link_libraries(server_fuzzer_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
 )
 
-target_include_directories(grpc_ruby_plugin
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(ssl_server_fuzzer_one_entry
+  test/core/security/ssl_server_fuzzer.c
+  test/core/util/one_corpus_entry_fuzzer.c
+)
+
+target_include_directories(ssl_server_fuzzer_one_entry
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
-target_link_libraries(grpc_ruby_plugin
-  ${_gRPC_PROTOBUF_PROTOC_LIBRARIES}
-  grpc_plugin_support
+target_link_libraries(ssl_server_fuzzer_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
-if (gRPC_INSTALL)
-  install(TARGETS grpc_ruby_plugin EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
+add_executable(uri_fuzzer_test_one_entry
+  test/core/client_channel/uri_fuzzer_test.c
+  test/core/util/one_corpus_entry_fuzzer.c
+)
+
+target_include_directories(uri_fuzzer_test_one_entry
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(uri_fuzzer_test_one_entry
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
 
+endif (gRPC_BUILD_TESTS)
 
 
 
diff --git a/INSTALL.md b/INSTALL.md
index 686145566fa9c80b80a4dc9f169e89dbdfcbbc11..24f088ea4926dd93132c15faa08a3307de82781d 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -61,49 +61,45 @@ gRPC C Core library.
 There are several ways to build under Windows, of varying complexity depending
 on experience with the tools involved.
 
-<!--
-###Visual Studio
+###Pre-generated Visual Studio solution
 
-Versions 2013 and 2015 are both supported. You can use [their respective
-community
-editions](https://www.visualstudio.com/en-us/downloads/download-visual-studio-vs.aspx).
-
-Building the C Core:
-- Open [grpc.sln](https://github.com/grpc/grpc/blob/master/vsprojects/grpc.sln).
-- Select your build target.
-- Build the `grpc` project.
+The pre-generated VS projects & solution are checked into the repository under the [vsprojects](/vsprojects) directory.
+  
+###Building using CMake (with BoringSSL)
+- Install [CMake](https://cmake.org/download/).
+- Install [Active State Perl](http://www.activestate.com/activeperl/) (`choco install activeperl`)
+- Install [Ninja](https://ninja-build.org/) (`choco install ninja`)
+- Install [Go](https://golang.org/dl/) (`choco install golang`)
+- Install [yasm](http://yasm.tortall.net/) and add it to `PATH` (`choco install yasm`)
+- Run these commands in the repo root directory
+```
+> md .build
+> cd .build
+> call "%VS140COMNTOOLS%..\..\VC\vcvarsall.bat" x64
+> cmake .. -GNinja -DCMAKE_BUILD_TYPE=Release
+> cmake --build .
+```
+NOTE: Currently you can only use Ninja to build using cmake on Windows (because of the boringssl dependency).
 
-Building the C++ runtime:
-- You need [CMake](https://cmake.org/) on your path to build protobuf (see below
-  for building using solely CMake).
-- Run `vsprojects/build_protos.bat` (needs `cmake.exe` in your path).
-- Open [buildtests_cxx.sln]()
-- Select your build target.
-- build the `grpc++` project.
--->
+###msys2 (with mingw)
 
-###msys2
+The Makefile (and source code) should support msys2's mingw32 and mingw64
+compilers. Building with msys2's native compiler is also possible, but
+difficult.
 
 This approach requires having [msys2](https://msys2.github.io/) installed.
+  
+```
+# Install prerequisites
+MSYS2$ pacman -S autoconf automake gcc libtool mingw-w64-x86_64-toolchain perl pkg-config zlib
+MSYS2$ pacman -S mingw-w64-x86_64-gflags
+```
 
-- The Makefile (and source code) should support msys2's mingw32 and mingw64
-  compilers. Building with msys2's native compiler is also possible, but
-  difficult.
-- The Makefile is expecting the Windows versions of OpenSSL (see
-  https://slproweb.com/products/Win32OpenSSL.html). It's also possible to build
-  the Windows version of OpenSSL from scratch. The output should be `libeay32`
-  and `ssleay32`.
-- If you are not installing the above files under msys2's path, you may specify
-  it, for instance, in the following way:
-  ```CPPFLAGS=”-I/c/OpenSSL-Win32/include” LDFLAGS=”-L/c/OpenSSL-Win32/lib” make static_c```
-- [protobuf3](https://github.com/google/protobuf/blob/master/src/README.md#c-installation---windows)
-  must be installed on the msys2 path.
-
-###Cmake (experimental)
+```
+# From mingw shell
+MINGW64$ export CPPFLAGS="-D_WIN32_WINNT=0x0600"
+MINGW64$ make
+```
 
-- Install [CMake](https://cmake.org/download/).
-- Run it over [grpc's
-  CMakeLists.txt](https://github.com/grpc/grpc/blob/master/CMakeLists.txt) to
-  generate "projects" for your compiler.
-- Build with your compiler of choice. The generated build files should have the
-  protobuf3 dependency baked in.
+NOTE: While most of the make targets are buildable under Mingw, some haven't been ported to Windows yet
+and may fail to build (mostly trying to include POSIX headers not available on Mingw).
diff --git a/Makefile b/Makefile
index 8f7328ae2854781a4136863fe8c99cc4153e4f9d..872f0cfacfa199fcb7b5358ceee2364e02324559 100644
--- a/Makefile
+++ b/Makefile
@@ -292,12 +292,19 @@ AR = libtool -no_warning_for_no_symbols -o
 endif
 STRIP ?= strip -x
 else
+ifeq ($(SYSTEM),MINGW32)
+ifeq ($(origin AR), default)
+AR = ar rcs
+endif
+STRIP ?= strip --strip-unneeded
+else
 ifeq ($(origin AR), default)
 AR = ar rcs
 endif
 STRIP ?= strip
 endif
 endif
+endif
 INSTALL ?= install
 RM ?= rm -f
 PKG_CONFIG ?= pkg-config
@@ -479,6 +486,7 @@ CPP_PC_TEMPLATE = prefix=$(prefix),exec_prefix=\$${prefix},includedir=\$${prefix
 CSHARP_PC_TEMPLATE = prefix=$(prefix),exec_prefix=\$${prefix},includedir=\$${prefix}/include,libdir=\$${exec_prefix}/lib,,Name: $(PC_NAME),Description: $(PC_DESCRIPTION),Version: $(CSHARP_VERSION),Cflags: -I\$${includedir} $(PC_CFLAGS),Requires.private: $(PC_REQUIRES_PRIVATE),Libs: -L\$${libdir} $(PC_LIB),Libs.private: $(PC_LIBS_PRIVATE)
 
 ifeq ($(SYSTEM),MINGW32)
+EXECUTABLE_SUFFIX = .exe
 SHARED_EXT_CORE = dll
 SHARED_EXT_CPP = dll
 SHARED_EXT_CSHARP = dll
@@ -487,6 +495,7 @@ SHARED_VERSION_CORE = -2
 SHARED_VERSION_CPP = -1
 SHARED_VERSION_CSHARP = -1
 else ifeq ($(SYSTEM),Darwin)
+EXECUTABLE_SUFFIX = 
 SHARED_EXT_CORE = dylib
 SHARED_EXT_CPP = dylib
 SHARED_EXT_CSHARP = dylib
@@ -495,6 +504,7 @@ SHARED_VERSION_CORE =
 SHARED_VERSION_CPP =
 SHARED_VERSION_CSHARP =
 else
+EXECUTABLE_SUFFIX = 
 SHARED_EXT_CORE = so.$(CORE_VERSION)
 SHARED_EXT_CPP = so.$(CPP_VERSION)
 SHARED_EXT_CSHARP = so.$(CSHARP_VERSION)
@@ -1013,6 +1023,9 @@ lame_client_test: $(BINDIR)/$(CONFIG)/lame_client_test
 lb_policies_test: $(BINDIR)/$(CONFIG)/lb_policies_test
 load_file_test: $(BINDIR)/$(CONFIG)/load_file_test
 low_level_ping_pong_benchmark: $(BINDIR)/$(CONFIG)/low_level_ping_pong_benchmark
+memory_profile_client: $(BINDIR)/$(CONFIG)/memory_profile_client
+memory_profile_server: $(BINDIR)/$(CONFIG)/memory_profile_server
+memory_profile_test: $(BINDIR)/$(CONFIG)/memory_profile_test
 message_compress_test: $(BINDIR)/$(CONFIG)/message_compress_test
 mlog_test: $(BINDIR)/$(CONFIG)/mlog_test
 multiple_server_queues_test: $(BINDIR)/$(CONFIG)/multiple_server_queues_test
@@ -1085,6 +1098,7 @@ grpc_ruby_plugin: $(BINDIR)/$(CONFIG)/grpc_ruby_plugin
 grpc_tool_test: $(BINDIR)/$(CONFIG)/grpc_tool_test
 grpclb_api_test: $(BINDIR)/$(CONFIG)/grpclb_api_test
 grpclb_test: $(BINDIR)/$(CONFIG)/grpclb_test
+http2_client: $(BINDIR)/$(CONFIG)/http2_client
 hybrid_end2end_test: $(BINDIR)/$(CONFIG)/hybrid_end2end_test
 interop_client: $(BINDIR)/$(CONFIG)/interop_client
 interop_server: $(BINDIR)/$(CONFIG)/interop_server
@@ -1260,9 +1274,9 @@ pc_cxx: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++.pc
 pc_cxx_unsecure: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++_unsecure.pc
 
 ifeq ($(EMBED_OPENSSL),true)
-privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
+privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
 else
-privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
+privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
 endif
 
 
@@ -1348,6 +1362,9 @@ buildtests_c: privatelibs_c \
   $(BINDIR)/$(CONFIG)/lame_client_test \
   $(BINDIR)/$(CONFIG)/lb_policies_test \
   $(BINDIR)/$(CONFIG)/load_file_test \
+  $(BINDIR)/$(CONFIG)/memory_profile_client \
+  $(BINDIR)/$(CONFIG)/memory_profile_server \
+  $(BINDIR)/$(CONFIG)/memory_profile_test \
   $(BINDIR)/$(CONFIG)/message_compress_test \
   $(BINDIR)/$(CONFIG)/mlog_test \
   $(BINDIR)/$(CONFIG)/multiple_server_queues_test \
@@ -1467,6 +1484,7 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/grpc_tool_test \
   $(BINDIR)/$(CONFIG)/grpclb_api_test \
   $(BINDIR)/$(CONFIG)/grpclb_test \
+  $(BINDIR)/$(CONFIG)/http2_client \
   $(BINDIR)/$(CONFIG)/hybrid_end2end_test \
   $(BINDIR)/$(CONFIG)/interop_client \
   $(BINDIR)/$(CONFIG)/interop_server \
@@ -1560,6 +1578,7 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/grpc_tool_test \
   $(BINDIR)/$(CONFIG)/grpclb_api_test \
   $(BINDIR)/$(CONFIG)/grpclb_test \
+  $(BINDIR)/$(CONFIG)/http2_client \
   $(BINDIR)/$(CONFIG)/hybrid_end2end_test \
   $(BINDIR)/$(CONFIG)/interop_client \
   $(BINDIR)/$(CONFIG)/interop_server \
@@ -1739,6 +1758,8 @@ test_c: buildtests_c
 	$(Q) $(BINDIR)/$(CONFIG)/lame_client_test || ( echo test lame_client_test failed ; exit 1 )
 	$(E) "[RUN]     Testing load_file_test"
 	$(Q) $(BINDIR)/$(CONFIG)/load_file_test || ( echo test load_file_test failed ; exit 1 )
+	$(E) "[RUN]     Testing memory_profile_test"
+	$(Q) $(BINDIR)/$(CONFIG)/memory_profile_test || ( echo test memory_profile_test failed ; exit 1 )
 	$(E) "[RUN]     Testing message_compress_test"
 	$(Q) $(BINDIR)/$(CONFIG)/message_compress_test || ( echo test message_compress_test failed ; exit 1 )
 	$(E) "[RUN]     Testing multiple_server_queues_test"
@@ -2039,7 +2060,7 @@ $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc: src/proto/grpc/lb/v1/load_ba
 $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc: src/proto/grpc/lb/v1/load_balancer.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2054,7 +2075,7 @@ $(GENDIR)/src/proto/grpc/reflection/v1alpha/reflection.pb.cc: src/proto/grpc/ref
 $(GENDIR)/src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.cc: src/proto/grpc/reflection/v1alpha/reflection.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2069,7 +2090,7 @@ $(GENDIR)/src/proto/grpc/testing/compiler_test.pb.cc: src/proto/grpc/testing/com
 $(GENDIR)/src/proto/grpc/testing/compiler_test.grpc.pb.cc: src/proto/grpc/testing/compiler_test.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2084,7 +2105,7 @@ $(GENDIR)/src/proto/grpc/testing/control.pb.cc: src/proto/grpc/testing/control.p
 $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc: src/proto/grpc/testing/control.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2099,7 +2120,7 @@ $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc: src/proto/grpc/
 $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc: src/proto/grpc/testing/duplicate/echo_duplicate.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2114,7 +2135,7 @@ $(GENDIR)/src/proto/grpc/testing/echo.pb.cc: src/proto/grpc/testing/echo.proto $
 $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc: src/proto/grpc/testing/echo.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2129,7 +2150,7 @@ $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc: src/proto/grpc/testing/ech
 $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc: src/proto/grpc/testing/echo_messages.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2144,7 +2165,7 @@ $(GENDIR)/src/proto/grpc/testing/empty.pb.cc: src/proto/grpc/testing/empty.proto
 $(GENDIR)/src/proto/grpc/testing/empty.grpc.pb.cc: src/proto/grpc/testing/empty.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2159,7 +2180,7 @@ $(GENDIR)/src/proto/grpc/testing/messages.pb.cc: src/proto/grpc/testing/messages
 $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc: src/proto/grpc/testing/messages.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2174,7 +2195,7 @@ $(GENDIR)/src/proto/grpc/testing/metrics.pb.cc: src/proto/grpc/testing/metrics.p
 $(GENDIR)/src/proto/grpc/testing/metrics.grpc.pb.cc: src/proto/grpc/testing/metrics.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2189,7 +2210,7 @@ $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc: src/proto/grpc/testing/payloads
 $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc: src/proto/grpc/testing/payloads.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2204,7 +2225,7 @@ $(GENDIR)/src/proto/grpc/testing/services.pb.cc: src/proto/grpc/testing/services
 $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc: src/proto/grpc/testing/services.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2219,7 +2240,7 @@ $(GENDIR)/src/proto/grpc/testing/stats.pb.cc: src/proto/grpc/testing/stats.proto
 $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc: src/proto/grpc/testing/stats.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2234,7 +2255,7 @@ $(GENDIR)/src/proto/grpc/testing/test.pb.cc: src/proto/grpc/testing/test.proto $
 $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc: src/proto/grpc/testing/test.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/empty.pb.cc $(GENDIR)/src/proto/grpc/testing/empty.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 
@@ -2327,36 +2348,36 @@ install-static_cxx: static_cxx strip-static_cxx install-pkg-config_cxx
 install-shared_c: shared_c strip-shared_c install-pkg-config_c
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)gpr$(SHARED_VERSION).$(SHARED_EXT_CORE)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgpr-imp.a $(prefix)/lib/libgpr-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgpr.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgpr.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgpr.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc$(SHARED_VERSION).$(SHARED_EXT_CORE)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc-imp.a $(prefix)/lib/libgrpc-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgrpc.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION).$(SHARED_EXT_CORE)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_cronet-imp.a $(prefix)/lib/libgrpc_cronet-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgrpc_cronet.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_cronet.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_cronet.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION).$(SHARED_EXT_CORE)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure-imp.a $(prefix)/lib/libgrpc_unsecure-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgrpc_unsecure.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_unsecure.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_unsecure.so
@@ -2371,36 +2392,36 @@ endif
 install-shared_cxx: shared_cxx strip-shared_cxx install-shared_c install-pkg-config_cxx
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++$(SHARED_VERSION).$(SHARED_EXT_CPP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++-imp.a $(prefix)/lib/libgrpc++-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION).$(SHARED_EXT_CPP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet-imp.a $(prefix)/lib/libgrpc++_cronet-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_cronet.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_cronet.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_cronet.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION).$(SHARED_EXT_CPP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection-imp.a $(prefix)/lib/libgrpc++_reflection-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_reflection.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_reflection.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_reflection.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION).$(SHARED_EXT_CPP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure-imp.a $(prefix)/lib/libgrpc++_unsecure-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_unsecure.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_unsecure.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_unsecure.so
@@ -2415,9 +2436,9 @@ endif
 install-shared_csharp: shared_csharp strip-shared_csharp
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/$(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION).$(SHARED_EXT_CSHARP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/$(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext-imp.a $(prefix)/lib/libgrpc_csharp_ext-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP)-dll.a $(prefix)/lib/libgrpc_csharp_ext.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/libgrpc_csharp_ext.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/libgrpc_csharp_ext.so
@@ -2430,9 +2451,6 @@ endif
 
 
 install-plugins: $(PROTOC_PLUGINS)
-ifeq ($(SYSTEM),MINGW32)
-	$(Q) false
-else
 	$(E) "[INSTALL] Installing grpc protoc plugins"
 	$(Q) $(INSTALL) -d $(prefix)/bin
 	$(Q) $(INSTALL) $(BINDIR)/$(CONFIG)/grpc_cpp_plugin $(prefix)/bin/grpc_cpp_plugin
@@ -2448,7 +2466,6 @@ else
 	$(Q) $(INSTALL) $(BINDIR)/$(CONFIG)/grpc_python_plugin $(prefix)/bin/grpc_python_plugin
 	$(Q) $(INSTALL) -d $(prefix)/bin
 	$(Q) $(INSTALL) $(BINDIR)/$(CONFIG)/grpc_ruby_plugin $(prefix)/bin/grpc_ruby_plugin
-endif
 
 install-pkg-config_c: pc_c pc_c_unsecure
 	$(E) "[INSTALL] Installing C pkg-config files"
@@ -2552,6 +2569,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/slice.h \
@@ -2578,17 +2596,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGPR_OBJS)  $(ZLIB_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared gpr.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGPR_OBJS)  $(ZLIB_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)gpr$(SHARED_VERSION).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgpr.so.2 -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so.2
-	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so
+	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so.2
+	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so
 endif
 endif
 
@@ -2631,6 +2649,8 @@ LIBGRPC_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -2852,6 +2872,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -2859,6 +2880,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/slice.h \
@@ -2898,17 +2920,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc$(SHARED_VERSION).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so.2
-	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so.2
+	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so
 endif
 endif
 
@@ -2930,6 +2952,8 @@ LIBGRPC_CRONET_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -3122,6 +3146,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -3129,6 +3154,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/slice.h \
@@ -3168,17 +3194,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_CRONET_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc_cronet.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_CRONET_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_cronet.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so.2
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so.2
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so
 endif
 endif
 
@@ -3219,6 +3245,8 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -3338,6 +3366,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -3345,6 +3374,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/slice.h \
@@ -3436,6 +3466,8 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -3628,6 +3660,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -3635,6 +3668,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/slice.h \
@@ -3662,17 +3696,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_UNSECURE_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc_unsecure.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_UNSECURE_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_unsecure.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so.2
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so.2
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so
 endif
 endif
 
@@ -3872,6 +3906,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -3879,6 +3914,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/slice.h \
@@ -3922,20 +3958,20 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc.$(SHARED_EXT_CORE) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc++.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc-imp
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc$(SHARED_VERSION_CORE)-dll
 else
 $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgrpc.$(SHARED_EXT_CORE) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++$(SHARED_VERSION).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc
 else
 	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).so
 endif
 endif
 
@@ -4015,6 +4051,8 @@ LIBGRPC++_CRONET_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -4234,6 +4272,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -4241,6 +4280,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/slice.h \
@@ -4294,20 +4334,20 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_CRONET_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr.$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_cronet.$(SHARED_EXT_CORE) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_CRONET_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc++_cronet.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr-imp -lgrpc_cronet-imp
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr$(SHARED_VERSION_CORE)-dll -lgrpc_cronet$(SHARED_VERSION_CORE)-dll
 else
 $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_CRONET_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgpr.$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet.$(SHARED_EXT_CORE) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_cronet
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_cronet
 else
 	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_cronet.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_cronet
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).so
 endif
 endif
 
@@ -4417,20 +4457,20 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_REFLECTION_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc++.$(SHARED_EXT_CPP) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_REFLECTION_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc++_reflection.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++-imp
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++$(SHARED_VERSION_CPP)-dll
 else
 $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_REFLECTION_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgrpc++.$(SHARED_EXT_CPP) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++
 else
 	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_reflection.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).so
 endif
 endif
 
@@ -4589,6 +4629,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -4596,6 +4637,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/slice.h \
@@ -4767,6 +4809,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -4774,6 +4817,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/slice.h \
@@ -4807,20 +4851,20 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_UNSECURE_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr.$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_unsecure.$(SHARED_EXT_CORE)
+$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_UNSECURE_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc++_unsecure.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr-imp -lgrpc_unsecure-imp
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr$(SHARED_VERSION_CORE)-dll -lgrpc_unsecure$(SHARED_VERSION_CORE)-dll
 else
 $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_UNSECURE_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgpr.$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.$(SHARED_EXT_CORE)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_unsecure
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_unsecure
 else
 	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_unsecure.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_unsecure
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).so
 endif
 endif
 
@@ -4934,6 +4978,59 @@ ifneq ($(NO_DEPS),true)
 endif
 
 
+LIBHTTP2_CLIENT_MAIN_SRC = \
+    $(GENDIR)/src/proto/grpc/testing/empty.pb.cc $(GENDIR)/src/proto/grpc/testing/empty.grpc.pb.cc \
+    $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc \
+    $(GENDIR)/src/proto/grpc/testing/test.pb.cc $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc \
+    test/cpp/interop/http2_client.cc \
+
+PUBLIC_HEADERS_CXX += \
+
+LIBHTTP2_CLIENT_MAIN_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBHTTP2_CLIENT_MAIN_SRC))))
+
+
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure libraries if you don't have OpenSSL.
+
+$(LIBDIR)/$(CONFIG)/libhttp2_client_main.a: openssl_dep_error
+
+
+else
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build a C++ library if you don't have protobuf - a bit overreached, but still okay.
+
+$(LIBDIR)/$(CONFIG)/libhttp2_client_main.a: protobuf_dep_error
+
+
+else
+
+$(LIBDIR)/$(CONFIG)/libhttp2_client_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBHTTP2_CLIENT_MAIN_OBJS) 
+	$(E) "[AR]      Creating $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBHTTP2_CLIENT_MAIN_OBJS) 
+ifeq ($(SYSTEM),Darwin)
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a
+endif
+
+
+
+
+endif
+
+endif
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(LIBHTTP2_CLIENT_MAIN_OBJS:.o=.dep)
+endif
+endif
+$(OBJDIR)/$(CONFIG)/test/cpp/interop/http2_client.o: $(GENDIR)/src/proto/grpc/testing/empty.pb.cc $(GENDIR)/src/proto/grpc/testing/empty.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/test.pb.cc $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc
+
+
 LIBINTEROP_CLIENT_HELPER_SRC = \
     $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc \
     test/cpp/interop/client_helper.cc \
@@ -5200,7 +5297,6 @@ LIBQPS_SRC = \
     test/cpp/qps/client_async.cc \
     test/cpp/qps/client_sync.cc \
     test/cpp/qps/driver.cc \
-    test/cpp/qps/limit_cores.cc \
     test/cpp/qps/parse_json.cc \
     test/cpp/qps/qps_worker.cc \
     test/cpp/qps/report.cc \
@@ -5256,7 +5352,6 @@ endif
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/client_async.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/client_sync.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/driver.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/qps/limit_cores.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/parse_json.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/qps_worker.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/report.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
@@ -5300,17 +5395,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP): $(LIBGRPC_CSHARP_EXT_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -shared grpc_csharp_ext.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP): $(LIBGRPC_CSHARP_EXT_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION).$(SHARED_EXT_CSHARP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_csharp_ext.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION).$(SHARED_EXT_CSHARP) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION).$(SHARED_EXT_CSHARP) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).so
 endif
 endif
 
@@ -7215,6 +7310,8 @@ LIBEND2END_TESTS_SRC = \
     test/core/end2end/tests/simple_request.c \
     test/core/end2end/tests/streaming_error_response.c \
     test/core/end2end/tests/trailing_metadata.c \
+    test/core/end2end/tests/write_buffering.c \
+    test/core/end2end/tests/write_buffering_at_end.c \
 
 PUBLIC_HEADERS_C += \
 
@@ -7301,6 +7398,8 @@ LIBEND2END_NOSEC_TESTS_SRC = \
     test/core/end2end/tests/simple_request.c \
     test/core/end2end/tests/streaming_error_response.c \
     test/core/end2end/tests/trailing_metadata.c \
+    test/core/end2end/tests/write_buffering.c \
+    test/core/end2end/tests/write_buffering_at_end.c \
 
 PUBLIC_HEADERS_C += \
 
@@ -10272,6 +10371,102 @@ endif
 endif
 
 
+MEMORY_PROFILE_CLIENT_SRC = \
+    test/core/memory_usage/client.c \
+
+MEMORY_PROFILE_CLIENT_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MEMORY_PROFILE_CLIENT_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/memory_profile_client: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/memory_profile_client: $(MEMORY_PROFILE_CLIENT_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(MEMORY_PROFILE_CLIENT_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/memory_profile_client
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/memory_usage/client.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_memory_profile_client: $(MEMORY_PROFILE_CLIENT_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(MEMORY_PROFILE_CLIENT_OBJS:.o=.dep)
+endif
+endif
+
+
+MEMORY_PROFILE_SERVER_SRC = \
+    test/core/memory_usage/server.c \
+
+MEMORY_PROFILE_SERVER_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MEMORY_PROFILE_SERVER_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/memory_profile_server: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/memory_profile_server: $(MEMORY_PROFILE_SERVER_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(MEMORY_PROFILE_SERVER_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/memory_profile_server
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/memory_usage/server.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_memory_profile_server: $(MEMORY_PROFILE_SERVER_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(MEMORY_PROFILE_SERVER_OBJS:.o=.dep)
+endif
+endif
+
+
+MEMORY_PROFILE_TEST_SRC = \
+    test/core/memory_usage/memory_usage_test.c \
+
+MEMORY_PROFILE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MEMORY_PROFILE_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/memory_profile_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/memory_profile_test: $(MEMORY_PROFILE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(MEMORY_PROFILE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/memory_profile_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/memory_usage/memory_usage_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_memory_profile_test: $(MEMORY_PROFILE_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(MEMORY_PROFILE_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 MESSAGE_COMPRESS_TEST_SRC = \
     test/core/compression/message_compress_test.c \
 
@@ -12888,6 +13083,37 @@ endif
 $(OBJDIR)/$(CONFIG)/test/cpp/grpclb/grpclb_test.o: $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc
 
 
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/http2_client: openssl_dep_error
+
+else
+
+
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/http2_client: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/http2_client:  $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS)  $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/http2_client
+
+endif
+
+endif
+
+
+
+
 HYBRID_END2END_TEST_SRC = \
     test/cpp/end2end/hybrid_end2end_test.cc \
 
@@ -16805,6 +17031,7 @@ test/core/util/test_tcp_server.c: $(OPENSSL_DEP)
 test/cpp/end2end/test_service_impl.cc: $(OPENSSL_DEP)
 test/cpp/interop/client.cc: $(OPENSSL_DEP)
 test/cpp/interop/client_helper.cc: $(OPENSSL_DEP)
+test/cpp/interop/http2_client.cc: $(OPENSSL_DEP)
 test/cpp/interop/interop_client.cc: $(OPENSSL_DEP)
 test/cpp/interop/interop_server.cc: $(OPENSSL_DEP)
 test/cpp/interop/interop_server_bootstrap.cc: $(OPENSSL_DEP)
@@ -16812,7 +17039,6 @@ test/cpp/interop/server_helper.cc: $(OPENSSL_DEP)
 test/cpp/qps/client_async.cc: $(OPENSSL_DEP)
 test/cpp/qps/client_sync.cc: $(OPENSSL_DEP)
 test/cpp/qps/driver.cc: $(OPENSSL_DEP)
-test/cpp/qps/limit_cores.cc: $(OPENSSL_DEP)
 test/cpp/qps/parse_json.cc: $(OPENSSL_DEP)
 test/cpp/qps/qps_worker.cc: $(OPENSSL_DEP)
 test/cpp/qps/report.cc: $(OPENSSL_DEP)
diff --git a/README.md b/README.md
index 70cf9fcc30e2e4f00d42480adb74412d94b2a0f9..174e861f5945fd9a4bd81e14c5ca4252b59bad41 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,8 @@ See [INSTALL](INSTALL.md) for installation instructions for various platforms.
 
 See [tools/run_tests](tools/run_tests) for more guidance on how to run various test suites (e.g. unit tests, interop tests, benchmarks)
 
+See [Performance dashboard](http://performance-dot-grpc-testing.appspot.com/explore?dashboard=5712453606309888) for the performance numbers for v1.0.x.
+
 #Repository Structure & Status
 
 This repository contains source code for gRPC libraries for multiple languages written on top of shared C core library [src/core] (src/core).
diff --git a/Rakefile b/Rakefile
index cfd4181d7e09b1666b9731d56f1e849a4200151a..c8bca20ad1de671f5a65c5342097da1df4ffc478 100755
--- a/Rakefile
+++ b/Rakefile
@@ -5,6 +5,8 @@ require 'rubocop/rake_task'
 require 'bundler/gem_tasks'
 require 'fileutils'
 
+require_relative 'build_config.rb'
+
 load 'tools/distrib/docker_for_windows.rb'
 
 # Add rubocop style checking tasks
@@ -83,7 +85,7 @@ task 'dlls' do
   env += 'EMBED_ZLIB=true '
   env += 'BUILDDIR=/tmp '
   env += "V=#{verbose} "
-  out = '/tmp/libs/opt/grpc-1.dll'
+  out = GrpcBuildConfig::CORE_WINDOWS_DLL
 
   w64 = { cross: 'x86_64-w64-mingw32', out: 'grpc_c.64.ruby' }
   w32 = { cross: 'i686-w64-mingw32', out: 'grpc_c.32.ruby' }
diff --git a/WORKSPACE b/WORKSPACE
new file mode 100644
index 0000000000000000000000000000000000000000..988310963457f9d8052cded0ceb2a326d58d1703
--- /dev/null
+++ b/WORKSPACE
@@ -0,0 +1,47 @@
+bind(
+    name = "nanopb",
+    actual = "//third_party/nanopb",
+)
+
+bind(
+    name = "libssl",
+    actual = "@submodule_boringssl//:ssl",
+)
+
+bind(
+    name = "zlib",
+    actual = "@submodule_zlib//:z",
+)
+
+bind(
+    name = "protobuf",
+    actual = "@submodule_protobuf//:protobuf",
+)
+
+bind(
+    name = "protobuf_clib",
+    actual = "@submodule_protobuf//:protoc_lib",
+)
+
+bind(
+    name = "protocol_compiler",
+    actual = "@submodule_protobuf//:protoc",
+)
+
+new_local_repository(
+    name = "submodule_boringssl",
+    path = "third_party/boringssl-with-bazel",
+    build_file = "third_party/boringssl-with-bazel/BUILD",
+)
+
+new_local_repository(
+    name = "submodule_zlib",
+    path = "third_party/zlib",
+    build_file = "third_party/zlib.BUILD",
+)
+
+new_local_repository(
+    name = "submodule_protobuf",
+    path = "third_party/protobuf",
+    build_file = "third_party/protobuf/BUILD",
+)
diff --git a/bazel/BUILD b/bazel/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..b86dcc2ad7ef79bb7308fc4b898d0e2cb64a7433
--- /dev/null
+++ b/bazel/BUILD
@@ -0,0 +1,46 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+package(default_visibility = ["//:__subpackages__"])
+
+load(":cc_grpc_library.bzl", "cc_grpc_library")
+
+proto_library(
+    name = "well_known_protos_list",
+    srcs = ["@submodule_protobuf//:well_known_protos"],
+)
+
+cc_grpc_library(
+    name = "well_known_protos",
+    srcs = "well_known_protos_list",
+    deps = [],
+    proto_only = True,
+)
diff --git a/bazel/cc_grpc_library.bzl b/bazel/cc_grpc_library.bzl
new file mode 100644
index 0000000000000000000000000000000000000000..9020eacb740453cbb4f96250aa13d8e2c184e586
--- /dev/null
+++ b/bazel/cc_grpc_library.bzl
@@ -0,0 +1,61 @@
+"""Generates and compiles C++ grpc stubs from proto_library rules."""
+
+load("//:bazel/generate_cc.bzl", "generate_cc")
+
+def cc_grpc_library(name, srcs, deps, proto_only, **kwargs):
+  """Generates C++ grpc classes from a .proto file.
+
+  Assumes the generated classes will be used in cc_api_version = 2.
+
+  Arguments:
+      name: name of rule.
+      srcs: a single proto_library, which wraps the .proto files with services.
+      deps: a list of C++ proto_library (or cc_proto_library) which provides
+        the compiled code of any message that the services depend on.
+      **kwargs: rest of arguments, e.g., compatible_with and visibility.
+  """
+  if len(srcs) > 1:
+    fail("Only one srcs value supported", "srcs")
+
+  proto_target = "_" + name + "_only"
+  codegen_target = "_" + name + "_codegen"
+  codegen_grpc_target = "_" + name + "_grpc_codegen"
+  proto_deps = ["_" + dep + "_only" for dep in deps if dep.find(':') == -1]
+  proto_deps += [dep.split(':')[0] + ':' + "_" + dep.split(':')[1] + "_only" for dep in deps if dep.find(':') != -1]
+
+  native.proto_library(
+      name = proto_target,
+      srcs = srcs,
+      deps = proto_deps,
+      **kwargs
+  )
+
+  generate_cc(
+      name = codegen_target,
+      srcs = [proto_target],
+      **kwargs
+  )
+
+  if not proto_only:
+    generate_cc(
+        name = codegen_grpc_target,
+        srcs = [proto_target],
+        plugin = "//:grpc_cpp_plugin",
+        **kwargs
+    )
+
+    native.cc_library(
+        name = name,
+        srcs = [":" + codegen_grpc_target, ":" + codegen_target],
+        hdrs = [":" + codegen_grpc_target, ":" + codegen_target],
+        deps = deps + ["//:grpc++", "//:grpc++_codegen_proto", "//external:protobuf"],
+        **kwargs
+    )
+  else:
+    native.cc_library(
+        name = name,
+        srcs = [":" + codegen_target],
+        hdrs = [":" + codegen_target],
+        deps = deps + ["//external:protobuf"],
+        **kwargs
+    )
diff --git a/bazel/generate_cc.bzl b/bazel/generate_cc.bzl
new file mode 100644
index 0000000000000000000000000000000000000000..d49cbe8d7289e8f4355f59f8f794d5dcaa2b303b
--- /dev/null
+++ b/bazel/generate_cc.bzl
@@ -0,0 +1,68 @@
+"""Generates C++ grpc stubs from proto_library rules.
+
+This is an internal rule used by cc_grpc_library, and shouldn't be used
+directly.
+"""
+
+def generate_cc_impl(ctx):
+  """Implementation of the generate_cc rule."""
+  protos = [f for src in ctx.attr.srcs for f in src.proto.direct_sources]
+  includes = [f for src in ctx.attr.srcs for f in src.proto.transitive_imports]
+  outs = []
+  if ctx.executable.plugin:
+    outs += [proto.basename[:-len(".proto")] + ".grpc.pb.h" for proto in protos]
+    outs += [proto.basename[:-len(".proto")] + ".grpc.pb.cc" for proto in protos]
+  else:
+    outs += [proto.basename[:-len(".proto")] + ".pb.h" for proto in protos]
+    outs += [proto.basename[:-len(".proto")] + ".pb.cc" for proto in protos]
+  out_files = [ctx.new_file(out) for out in outs]
+  # The following should be replaced with ctx.configuration.buildout
+  # whenever this is added to Skylark.
+  dir_out = out_files[0].dirname[:-len(protos[0].dirname)]
+
+  arguments = []
+  if ctx.executable.plugin:
+    arguments += ["--plugin=protoc-gen-PLUGIN=" + ctx.executable.plugin.path]
+    arguments += ["--PLUGIN_out=" + ",".join(ctx.attr.flags) + ":" + dir_out]
+    additional_input = [ctx.executable.plugin]
+  else:
+    arguments += ["--cpp_out=" + ",".join(ctx.attr.flags) + ":" + dir_out]
+    additional_input = []
+  arguments += ["-I{0}={0}".format(include.path) for include in includes]
+  arguments += [proto.path for proto in protos]
+
+  ctx.action(
+      inputs = protos + includes + additional_input,
+      outputs = out_files,
+      executable = ctx.executable._protoc,
+      arguments = arguments,
+  )
+
+  return struct(files=set(out_files))
+
+generate_cc = rule(
+    attrs = {
+        "srcs": attr.label_list(
+            mandatory = True,
+            non_empty = True,
+            providers = ["proto"],
+        ),
+        "plugin": attr.label(
+            executable = True,
+            providers = ["files_to_run"],
+            cfg = "host",
+        ),
+        "flags": attr.string_list(
+            mandatory = False,
+            allow_empty = True,
+        ),
+        "_protoc": attr.label(
+            default = Label("//external:protocol_compiler"),
+            executable = True,
+            cfg = "host",
+        ),
+    },
+    # We generate .h files, so we need to output to genfiles.
+    output_to_genfiles = True,
+    implementation = generate_cc_impl,
+)
diff --git a/bazel/grpc_build_system.bzl b/bazel/grpc_build_system.bzl
new file mode 100644
index 0000000000000000000000000000000000000000..daf8b78527a23b4a8dd77f89c0c0c95217e7fb59
--- /dev/null
+++ b/bazel/grpc_build_system.bzl
@@ -0,0 +1,68 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#
+# This is for the gRPC build system. This isn't intended to be used outsite of
+# the BUILD file for gRPC. It contains the mapping for the template system we
+# use to generate other platform's build system files.
+#
+
+def grpc_cc_library(name, srcs = [], public_hdrs = [], hdrs = [], external_deps = [], deps = [], standalone = False, language = "C++"):
+  copts = []
+  if language.upper() == "C":
+    copts = ["-std=c99"]
+  native.cc_library(
+    name = name,
+    srcs = srcs,
+    hdrs = hdrs + public_hdrs,
+    deps = deps + ["//external:" + dep for dep in external_deps],
+    copts = copts,
+    linkopts = ["-pthread"],
+    includes = [
+        "include"
+    ]
+  )
+
+def grpc_proto_plugin(name, srcs = [], deps = []):
+  native.cc_binary(
+    name = name,
+    srcs = srcs,
+    deps = deps,
+  )
+
+load("//:bazel/cc_grpc_library.bzl", "cc_grpc_library")
+
+def grpc_proto_library(name, srcs = [], deps = [], well_known_deps = [], has_services = True):
+  cc_grpc_library(
+    name = name,
+    srcs = srcs,
+    deps = deps,
+    proto_only = not has_services,
+  )
+
diff --git a/binding.gyp b/binding.gyp
index 516cbdce5dc9f2c325c2e3548708938d69c58c31..479403ed218d1dfaa0276d47a4dc4f18dbce07bb 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -37,18 +37,68 @@
 # Some of this file is built with the help of
 # https://n8.io/converting-a-c-library-to-gyp/
 {
+  'variables': {
+    'runtime%': 'node'
+  },
   'target_defaults': {
     'include_dirs': [
       '.',
       'include'
     ],
     'defines': [
-      'GRPC_UV'
+      'GPR_BACKWARDS_COMPATIBILITY_MODE'
     ],
     'conditions': [
+      ['runtime=="node"', {
+        'defines': [
+          'GRPC_UV'
+        ]
+      }],
+      ['OS!="win" and runtime=="electron"', {
+        "defines": [
+          'OPENSSL_NO_THREADS'
+        ]
+      }],
+      # This is the condition for using boringssl
+      ['OS=="win" or runtime=="electron"', {
+        "include_dirs": [
+          "third_party/boringssl/include"
+        ],
+        "defines": [
+          'OPENSSL_NO_ASM'
+        ]
+      }, {
+        # Based on logic above, we know that this must be a non-Windows system
+        'variables': {
+          # The output of "node --version" is "v[version]". We use cut to
+          # remove the first character.
+          'target%': '<!(node --version | cut -c2-)'
+        },
+        # Empirically, Node only exports ALPN symbols if its major version is >0.
+        # io.js always reports versions >0 and always exports ALPN symbols.
+        # Therefore, Node's major version will be truthy if and only if it
+        # supports ALPN. The target is "[major].[minor].[patch]". We split by
+        # periods and take the first field to get the major version.
+        'defines': [
+          'TSI_OPENSSL_ALPN_SUPPORT=<!(echo <(target) | cut -d. -f1)'
+        ],
+        'include_dirs': [
+          '<(node_root_dir)/deps/openssl/openssl/include',
+        ],
+        'conditions': [
+         ["target_arch=='ia32'", {
+             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/piii" ]
+         }],
+         ["target_arch=='x64'", {
+             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/k8" ]
+         }],
+         ["target_arch=='arm'", {
+             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/arm" ]
+         }]
+        ]
+      }],
       ['OS == "win"', {
         "include_dirs": [
-          "third_party/boringssl/include",
           "third_party/zlib"
         ],
         "defines": [
@@ -58,8 +108,6 @@
           'UNICODE',
           '_UNICODE',
           'NOMINMAX',
-          'OPENSSL_NO_ASM',
-          'GPR_BACKWARDS_COMPATIBILITY_MODE'
         ],
         "msvs_settings": {
           'VCCLCompilerTool': {
@@ -72,21 +120,8 @@
       }, { # OS != "win"
         'variables': {
           'config': '<!(echo $CONFIG)',
-          # The output of "node --version" is "v[version]". We use cut to
-          # remove the first character.
-          'target%': '<!(node --version | cut -c2-)'
         },
-          # Empirically, Node only exports ALPN symbols if its major version is >0.
-          # io.js always reports versions >0 and always exports ALPN symbols.
-          # Therefore, Node's major version will be truthy if and only if it
-          # supports ALPN. The target is "[major].[minor].[patch]". We split by
-          # periods and take the first field to get the major version.
-        'defines': [
-          'TSI_OPENSSL_ALPN_SUPPORT=<!(echo <(target) | cut -d. -f1)',
-          'GPR_BACKWARDS_COMPATIBILITY_MODE'
-        ],
         'include_dirs': [
-          '<(node_root_dir)/deps/openssl/openssl/include',
           '<(node_root_dir)/deps/zlib'
         ],
         'conditions': [
@@ -101,47 +136,14 @@
               '-fprofile-arcs'
             ]
           }
-         ],
-         ["target_arch=='ia32'", {
-             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/piii" ]
-         }],
-         ["target_arch=='x64'", {
-             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/k8" ]
-         }],
-         ["target_arch=='arm'", {
-             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/arm" ]
-         }]
+         ]
         ]
       }]
     ]
   },
   'conditions': [
-    ['OS == "win"', {
+    ['OS=="win" or runtime=="electron"', {
       'targets': [
-        {
-          # IMPORTANT WINDOWS BUILD INFORMATION
-          # This library does not build on Windows without modifying the Node
-          # development packages that node-gyp downloads in order to build.
-          # Due to https://github.com/nodejs/node/issues/4932, the headers for
-          # BoringSSL conflict with the OpenSSL headers included by default
-          # when including the Node headers. The remedy for this is to remove
-          # the OpenSSL headers, from the downloaded Node development package,
-          # which is typically located in `.node-gyp` in your home directory.
-          'target_name': 'WINDOWS_BUILD_WARNING',
-          'actions': [
-            {
-              'action_name': 'WINDOWS_BUILD_WARNING',
-              'inputs': [
-                'package.json'
-              ],
-              'outputs': [
-                'ignore_this_part'
-              ],
-              'action': ['echo', 'IMPORTANT: Due to https://github.com/nodejs/node/issues/4932, to build this library on Windows, you must first remove <(node_root_dir)/include/node/openssl/']
-            }
-          ]
-        },
-        # Only want to compile BoringSSL and zlib under Windows
         {
           'cflags': [
             '-std=c99',
@@ -453,6 +455,34 @@
             'third_party/boringssl/ssl/tls_record.c',
           ]
         },
+      ]
+    }],
+    ['OS == "win"', {
+      'targets': [
+        {
+          # IMPORTANT WINDOWS BUILD INFORMATION
+          # This library does not build on Windows without modifying the Node
+          # development packages that node-gyp downloads in order to build.
+          # Due to https://github.com/nodejs/node/issues/4932, the headers for
+          # BoringSSL conflict with the OpenSSL headers included by default
+          # when including the Node headers. The remedy for this is to remove
+          # the OpenSSL headers, from the downloaded Node development package,
+          # which is typically located in `.node-gyp` in your home directory.
+          'target_name': 'WINDOWS_BUILD_WARNING',
+          'actions': [
+            {
+              'action_name': 'WINDOWS_BUILD_WARNING',
+              'inputs': [
+                'package.json'
+              ],
+              'outputs': [
+                'ignore_this_part'
+              ],
+              'action': ['echo', 'IMPORTANT: Due to https://github.com/nodejs/node/issues/4932, to build this library on Windows, you must first remove <(node_root_dir)/include/node/openssl/']
+            }
+          ]
+        },
+        # Only want to compile zlib under Windows
         {
           'cflags': [
             '-std=c99',
@@ -572,6 +602,8 @@
         'src/core/lib/channel/connected_channel.c',
         'src/core/lib/channel/deadline_filter.c',
         'src/core/lib/channel/handshaker.c',
+        'src/core/lib/channel/handshaker_factory.c',
+        'src/core/lib/channel/handshaker_registry.c',
         'src/core/lib/channel/http_client_filter.c',
         'src/core/lib/channel/http_server_filter.c',
         'src/core/lib/channel/message_size_filter.c',
@@ -805,6 +837,11 @@
         '-g'
       ],
       "conditions": [
+        ['OS=="win" or runtime=="electron"', {
+          'dependencies': [
+            "boringssl",
+          ]
+        }],
         ['OS=="mac"', {
           'xcode_settings': {
             'MACOSX_DEPLOYMENT_TARGET': '10.9',
@@ -816,7 +853,6 @@
         }],
         ['OS=="win"', {
           'dependencies': [
-            "boringssl",
             "z",
           ]
         }],
@@ -833,8 +869,8 @@
         "src/node/ext/call_credentials.cc",
         "src/node/ext/channel.cc",
         "src/node/ext/channel_credentials.cc",
-        "src/node/ext/completion_queue.cc",
-        "src/node/ext/completion_queue_async_worker.cc",
+        "src/node/ext/completion_queue_threadpool.cc",
+        "src/node/ext/completion_queue_uv.cc",
         "src/node/ext/node_grpc.cc",
         "src/node/ext/server.cc",
         "src/node/ext/server_credentials.cc",
diff --git a/build.yaml b/build.yaml
index de9d253ef1cc4bc6155da75c8b26ac3f438f31e3..eaf64e860f1a11b62a83bd781f5161807fa25ee8 100644
--- a/build.yaml
+++ b/build.yaml
@@ -144,6 +144,7 @@ filegroups:
   - include/grpc/impl/codegen/atm_gcc_atomic.h
   - include/grpc/impl/codegen/atm_gcc_sync.h
   - include/grpc/impl/codegen/atm_windows.h
+  - include/grpc/impl/codegen/gpr_slice.h
   - include/grpc/impl/codegen/gpr_types.h
   - include/grpc/impl/codegen/port_platform.h
   - include/grpc/impl/codegen/slice.h
@@ -171,6 +172,8 @@ filegroups:
   - src/core/lib/channel/context.h
   - src/core/lib/channel/deadline_filter.h
   - src/core/lib/channel/handshaker.h
+  - src/core/lib/channel/handshaker_factory.h
+  - src/core/lib/channel/handshaker_registry.h
   - src/core/lib/channel/http_client_filter.h
   - src/core/lib/channel/http_server_filter.h
   - src/core/lib/channel/message_size_filter.h
@@ -237,6 +240,7 @@ filegroups:
   - src/core/lib/json/json_reader.h
   - src/core/lib/json/json_writer.h
   - src/core/lib/slice/percent_encoding.h
+  - src/core/lib/slice/slice_internal.h
   - src/core/lib/slice/slice_string_helpers.h
   - src/core/lib/surface/api_trace.h
   - src/core/lib/surface/call.h
@@ -268,6 +272,8 @@ filegroups:
   - src/core/lib/channel/connected_channel.c
   - src/core/lib/channel/deadline_filter.c
   - src/core/lib/channel/handshaker.c
+  - src/core/lib/channel/handshaker_factory.c
+  - src/core/lib/channel/handshaker_registry.c
   - src/core/lib/channel/http_client_filter.c
   - src/core/lib/channel/http_server_filter.c
   - src/core/lib/channel/message_size_filter.c
@@ -421,6 +427,7 @@ filegroups:
   - include/grpc/impl/codegen/byte_buffer_reader.h
   - include/grpc/impl/codegen/compression_types.h
   - include/grpc/impl/codegen/connectivity_state.h
+  - include/grpc/impl/codegen/exec_ctx_fwd.h
   - include/grpc/impl/codegen/grpc_types.h
   - include/grpc/impl/codegen/propagation_bits.h
   - include/grpc/impl/codegen/status.h
@@ -677,7 +684,7 @@ filegroups:
   - include/grpc/grpc_security.h
   - include/grpc/grpc_security_constants.h
   headers:
-  - third_party/objective_c/Cronet/cronet_c_for_grpc.h
+  - third_party/Cronet/bidirectional_stream_c.h
   src:
   - src/core/ext/transport/cronet/client/secure/cronet_channel_create.c
   - src/core/ext/transport/cronet/transport/cronet_api_dummy.c
@@ -1211,6 +1218,22 @@ libs:
   vs_project_guid: '{B6E81D84-2ACB-41B8-8781-493A944C7817}'
   vs_props:
   - protoc
+- name: http2_client_main
+  build: private
+  language: c++
+  headers:
+  - test/cpp/interop/http2_client.h
+  src:
+  - src/proto/grpc/testing/empty.proto
+  - src/proto/grpc/testing/messages.proto
+  - src/proto/grpc/testing/test.proto
+  - test/cpp/interop/http2_client.cc
+  deps:
+  - grpc++_test_util
+  - grpc_test_util
+  - grpc++
+  - grpc
+  - grpc++_test_config
 - name: interop_client_helper
   build: private
   language: c++
@@ -1253,6 +1276,7 @@ libs:
   src:
   - test/cpp/interop/server_helper.cc
   deps:
+  - grpc++_test_util
   - grpc_test_util
   - grpc++
   - grpc
@@ -1289,7 +1313,6 @@ libs:
   - test/cpp/qps/driver.h
   - test/cpp/qps/histogram.h
   - test/cpp/qps/interarrival.h
-  - test/cpp/qps/limit_cores.h
   - test/cpp/qps/parse_json.h
   - test/cpp/qps/qps_worker.h
   - test/cpp/qps/report.h
@@ -1306,7 +1329,6 @@ libs:
   - test/cpp/qps/client_async.cc
   - test/cpp/qps/client_sync.cc
   - test/cpp/qps/driver.cc
-  - test/cpp/qps/limit_cores.cc
   - test/cpp/qps/parse_json.cc
   - test/cpp/qps/qps_worker.cc
   - test/cpp/qps/report.cc
@@ -2316,6 +2338,43 @@ targets:
   - mac
   - linux
   - posix
+- name: memory_profile_client
+  build: test
+  run: false
+  language: c
+  src:
+  - test/core/memory_usage/client.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+- name: memory_profile_server
+  build: test
+  run: false
+  language: c
+  src:
+  - test/core/memory_usage/server.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+- name: memory_profile_test
+  cpu_cost: 1.5
+  build: test
+  language: c
+  src:
+  - test/core/memory_usage/memory_usage_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+  platforms:
+  - mac
+  - linux
+  - posix
 - name: message_compress_test
   build: test
   language: c
@@ -3185,6 +3244,22 @@ targets:
   - grpc++
   - grpc++_test_util
   - grpc_test_util
+- name: http2_client
+  build: test
+  run: false
+  language: c++
+  src: []
+  deps:
+  - http2_client_main
+  - grpc++_test_util
+  - grpc_test_util
+  - grpc++
+  - grpc
+  - grpc++_test_config
+  platforms:
+  - mac
+  - linux
+  - posix
 - name: hybrid_end2end_test
   gtest: true
   build: test
@@ -3812,7 +3887,6 @@ node_modules:
   - src/node/ext/channel.h
   - src/node/ext/channel_credentials.h
   - src/node/ext/completion_queue.h
-  - src/node/ext/completion_queue_async_worker.h
   - src/node/ext/server.h
   - src/node/ext/server_credentials.h
   - src/node/ext/timeval.h
@@ -3831,8 +3905,8 @@ node_modules:
   - src/node/ext/call_credentials.cc
   - src/node/ext/channel.cc
   - src/node/ext/channel_credentials.cc
-  - src/node/ext/completion_queue.cc
-  - src/node/ext/completion_queue_async_worker.cc
+  - src/node/ext/completion_queue_threadpool.cc
+  - src/node/ext/completion_queue_uv.cc
   - src/node/ext/node_grpc.cc
   - src/node/ext/server.cc
   - src/node/ext/server_credentials.cc
diff --git a/build_config.rb b/build_config.rb
new file mode 100644
index 0000000000000000000000000000000000000000..35e887ef621fa52106c348614cd7c8013d3cd077
--- /dev/null
+++ b/build_config.rb
@@ -0,0 +1,32 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+module GrpcBuildConfig
+  CORE_WINDOWS_DLL = '/tmp/libs/opt/grpc-2.dll'
+end
diff --git a/config.m4 b/config.m4
index 4b86e25581d098272adda575a2b75cdd1e078e07..85549e5f4270cd07b503ab6b9d0dfeb77c2ed1e3 100644
--- a/config.m4
+++ b/config.m4
@@ -5,9 +5,9 @@ if test "$PHP_GRPC" != "no"; then
   dnl Write more examples of tests here...
 
   dnl # --with-grpc -> add include path
-  PHP_ADD_INCLUDE(../../grpc/include)
-  PHP_ADD_INCLUDE(../../grpc/src/php/ext/grpc)
-  PHP_ADD_INCLUDE(../../grpc/third_party/boringssl/include)
+  PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/include)
+  PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/src/php/ext/grpc)
+  PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/boringssl/include)
 
   LIBS="-lpthread $LIBS"
 
@@ -88,6 +88,8 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
diff --git a/doc/cpp/perf_notes.md b/doc/cpp/perf_notes.md
new file mode 100644
index 0000000000000000000000000000000000000000..c87557558dd0fc81d2839e92312c0fc817d0f257
--- /dev/null
+++ b/doc/cpp/perf_notes.md
@@ -0,0 +1,29 @@
+# C++ Performance Notes
+
+## Streaming write buffering
+
+Generally, each write operation (Write(), WritesDone()) implies a syscall.
+gRPC will try to batch together separate write operations from different
+threads, but currently cannot automatically infer batching in a single stream.
+
+If message k+1 in a stream does not rely on responses from message k, it's
+possible to enable write batching by passing a WriteOptions argument to Write
+with the buffer_hint set:
+
+~~~{.cpp}
+stream_writer->Write(message, WriteOptions().set_buffer_hint());
+~~~
+
+The write will be buffered until one of the following is true:
+- the per-stream buffer is filled (controllable with the channel argument
+  GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE) - this prevents infinite buffering leading
+  to OOM
+- a subsequent Write without buffer_hint set is posted
+- the call is finished for writing (WritesDone() called on the client,
+  or Finish() called on an async server stream, or the service handler returns
+  for a sync server stream)
+
+## Completion Queues and Threading in the Async API
+
+Right now, the best performance trade-off is having numcpu's threads and one
+completion queue per thread.
diff --git a/doc/images/load-balancing.png b/doc/images/load-balancing.png
new file mode 100644
index 0000000000000000000000000000000000000000..7c70465e653dcf732875e96ab80e65331ff7c67d
Binary files /dev/null and b/doc/images/load-balancing.png differ
diff --git a/doc/images/load-balancing.svg b/doc/images/load-balancing.svg
new file mode 100644
index 0000000000000000000000000000000000000000..18d836d345bbb557d24857c03e88749aac787e11
--- /dev/null
+++ b/doc/images/load-balancing.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0" standalone="yes"?>
+
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+
diff --git a/doc/images/load_balancing_design.png b/doc/images/load_balancing_design.png
deleted file mode 100644
index 86183966fb88e24a5a86dbd4b62ae2a308d0a542..0000000000000000000000000000000000000000
Binary files a/doc/images/load_balancing_design.png and /dev/null differ
diff --git a/doc/interop-test-descriptions.md b/doc/interop-test-descriptions.md
index 96d1f2bd7526c3421e867ed94ba9986a10f2b358..da3b97674438b5f36d0b3fe6512f5b0f70a4d156 100644
--- a/doc/interop-test-descriptions.md
+++ b/doc/interop-test-descriptions.md
@@ -716,7 +716,9 @@ Procedure:
 
     ```
     {
-      response_size: 314159
+      response_parameters:{
+        size: 314159
+      }
       payload:{
         body: 271828 bytes of zeros
       }
diff --git a/doc/load-balancing.md b/doc/load-balancing.md
index dfaa7a7f33b364d5ae6aa5169c3572e45ef4fa16..f56d2b0c73acadc10fa9eaf3decc50cdcdfb0482 100644
--- a/doc/load-balancing.md
+++ b/doc/load-balancing.md
@@ -1,13 +1,21 @@
 Load Balancing in gRPC
-=======================
+======================
 
-# Objective
+# Scope
 
-To design a load balancing API between a gRPC client and a Load Balancer to
-instruct the client how to send load to multiple backend servers.
+This document explains the design for load balancing within gRPC.
 
 # Background
 
+## Per-Call Load Balancing
+
+It is worth noting that load-balancing within gRPC happens on a per-call
+basis, not a per-connection basis.  In other words, even if all requests
+come from a single client, we still want them to be load-balanced across
+all servers.
+
+## Approaches to Load Balancing
+
 Prior to any gRPC specifics, we explore some usual ways to approach load
 balancing.
 
@@ -44,30 +52,31 @@ list of servers to the client.
 ### External Load Balancing Service
 
 The client load balancing code is kept simple and portable, implementing
-well-known algorithms (ie, Round Robin) for server selection.
-Complex load balancing algorithms are instead provided by the load balancer. The
-client relies on the load balancer to provide _load balancing configuration_ and
-_the list of servers_ to which the client should send requests. The balancer
-updates the server list as needed to balance the load as well as handle server
+well-known algorithms (e.g., Round Robin) for server selection.
+Complex load balancing algorithms are instead provided by the load
+balancer. The client relies on the load balancer to provide _load
+balancing configuration_ and _the list of servers_ to which the client
+should send requests. The balancer updates the server list as needed
+to balance the load as well as handle server unavailability or health
+issues. The load balancer will make any necessary complex decisions and
+inform the client. The load balancer may communicate with the backend
+servers to collect load and health information.
+
+# Requirements
+
+## Simple API and client
+
+The gRPC client load balancing code must be simple and portable. The
+client should only contain simple algorithms (e.g., Round Robin) for
+server selection.  For complex algorithms, the client should rely on
+a load balancer to provide load balancing configuration and the list of
+servers to which the client should send requests. The balancer will update
+the server list as needed to balance the load as well as handle server
 unavailability or health issues. The load balancer will make any necessary
-complex decisions and inform the client. The load balancer may communicate with
-the backend servers to collect load and health information.
-
-
-## Requirements
-
-#### Simple API and client
-
-The gRPC client load balancing code must be simple and portable. The client
-should only contain simple algorithms (ie Round Robin) for server selection. For
-complex algorithms, the client should rely on a load balancer to provide load
-balancing configuration and the list of servers to which the client should send
-requests. The balancer will update the server list as needed to balance the load
-as well as handle server unavailability or health issues. The load balancer will
-make any necessary complex decisions and inform the client. The load balancer
-may communicate with the backend servers to collect load and health information.
+complex decisions and inform the client. The load balancer may communicate
+with the backend servers to collect load and health information.
 
-#### Security
+## Security
 
 The load balancer may be separate from the actual server backends and a
 compromise of the load balancer should only lead to a compromise of the
@@ -75,70 +84,64 @@ loadbalancing functionality. In other words, a compromised load balancer should
 not be able to cause a client to trust a (potentially malicious) backend server
 any more than in a comparable situation without loadbalancing.
 
-# Proposed Architecture
-
-The gRPC load balancing implements the external load balancing server approach:
-an external load balancer provides simple clients with an up-to-date list of
-servers.
-
-![image](images/load_balancing_design.png)
-
-1. On startup, the gRPC client issues a name resolution request for the service.
-   The name will resolve to one or more IP addresses to gRPC servers, a hint on
-   whether the IP address(es) point to a load balancer or not, and also return a
-   client config.
-2. The gRPC client connects to a gRPC Server.
-   1. If the name resolution has hinted that the endpoint is a load balancer,
-      the client's gRPC LB policy will attempt to open a stream to the load
-      balancer service. The server may respond in only one of the following
-      ways.
-      1. `status::UNIMPLEMENTED`. There is no loadbalancing in use. The client
-         call will fail.
-      2. "I am a Load Balancer and here is the server list." (Goto Step 4.)
-      3. "Please contact Load Balancer X" (See Step 3.) The client will close
-         this connection and cancel the stream.
-      4. If the server fails to respond, the client will wait for some timeout
-         and then re-resolve the name (process to Step 1 above).
-   2. If the name resolution has not hinted that the endpoint is a load
-      balancer, the client connects directly to the service it wants to talk to.
-3. The gRPC client's gRPC LB policy opens a separate connection to the Load
-   Balancer. If this fails, it will go back to step 1 and try another address.
-   1. During channel initialization to the Load Balancer, the client will
-      attempt to open a stream to the Load Balancer service.
-   2. The Load Balancer will return a server list to the gRPC client. If the
-      server list is empty, the call will wait until a non-empty one is
-      received. Optional: The Load Balancer will also open channels to the gRPC
-      servers if load reporting is needed.
-4. The gRPC client will send RPCs to the gRPC servers contained in the server
-   list from the Load Balancer.
-5. Optional: The gRPC servers may periodically report load to the Load Balancer.
-
-## Client
-
-When establishing a gRPC _stream_ to the balancer, the client will send an initial
-request to the load balancer (via a regular gRPC message). The load balancer
-will respond with client config (including, for example, settings for flow
-control, RPC deadlines, etc.) or a redirect to another load balancer. If the
-balancer did not redirect the client, it will then send a list of servers to the
-client. The client will contain simple load balancing logic for choosing the
-next server when it needs to send a request.
-
-## Load Balancer
-
-The Load Balancer is responsible for providing the client with a list of servers
-and client RPC parameters. The balancer chooses when to update the list of
-servers and can decide whether to provide a complete list, a subset, or a
-specific list of “picked” servers in a particular order. The balancer can
-optionally provide an expiration interval after which the server list should no
-longer be trusted and should be updated by the balancer.
-
-The load balancer may open reporting streams to each server contained in the
-server list. These streams are primarily used for load reporting. For example,
-Weighted Round Robin requires that the servers report utilization to the load
-balancer in order to compute the next list of servers.
-
-## Server
-
-The gRPC Server is responsible for answering RPC requests and providing
-responses to the client. The server will also report load to the load balancer
-if a reporting stream was opened for this purpose.
+# Architecture
+
+## Overview
+
+The primary mechanism for load-balancing in gRPC is external
+load-balancing, where an external load balancer provides simple clients
+with an up-to-date list of servers.
+
+The gRPC client does support an API for built-in load balancing policies.
+However, there are only a small number of these (one of which is the
+`grpclb` policy, which implements external load balancing), and users
+are discouraged from trying to extend gRPC by adding more.  Instead, new
+load balancing policies should be implemented in external load balancers.
+
+## Workflow
+
+Load-balancing policies fit into the gRPC client workflow in between
+name resolution and the connection to the server.  Here's how it all
+works:
+
+![image](images/load-balancing.png)
+
+1. On startup, the gRPC client issues a [name resolution](naming.md) request
+   for the server name.  The name will resolve to one or more IP addresses,
+   each of which will indicate whether it is a server address or
+   a load balancer address, and a [service config](service_config.md)
+   that indicates which client-side load-balancing policy to use (e.g.,
+   `round_robin` or `grpclb`).
+2. The client instantiates the load balancing policy.
+   - Note: If all addresses returned by the resolver are balancer
+     addresses, then the client will use the `grpclb` policy, regardless
+     of what load-balancing policy was requested by the service config.
+     Otherwise, the client will use the load-balancing policy requested
+     by the service config.  If no load-balancing policy is requested
+     by the service config, then the client will default to a policy
+     that picks the first available server address.
+3. The load balancing policy creates a subchannel to each server address.
+   - For all policies *except* `grpclb`, this means one subchannel for each
+     address returned by the resolver. Note that these policies
+     ignore any balancer addresses returned by the resolver.
+   - In the case of the `grpclb` policy, the workflow is as follows:
+     1. The policy opens a stream to one of the balancer addresses returned
+        by the resolver. It asks the balancer for the server addresses to
+        use for the server name originally requested by the client (i.e.,
+        the same one originally passed to the name resolver).
+        - Note: The `grpclb` policy currently ignores any non-balancer
+          addresses returned by the resolver. However, in the future, it
+          may be changed to use these addresses as a fallback in case no
+          balancers can be contacted.
+     2. The gRPC servers to which the load balancer is directing the client
+        may report load to the load balancers, if that information is needed
+        by the load balancer's configuration.
+     3. The load balancer returns a server list to the gRPC client's `grpclb`
+        policy. The `grpclb` policy will then create a subchannel to each of
+        server in the list.
+4. For each RPC sent, the load balancing policy decides which
+   subchannel (i.e., which server) the RPC should be sent to.
+   - In the case of the `grpclb` policy, the client will send requests
+     to the servers in the order in which they were returned by the load
+     balancer.  If the server list is empty, the call will block until a
+     non-empty one is received.
diff --git a/doc/naming.md b/doc/naming.md
index d0c892e8d924ef53e6b5a876fbf0cb41bf353b69..676aa9f2980683ffe5873e9906dc8e5c16433991 100644
--- a/doc/naming.md
+++ b/doc/naming.md
@@ -1,30 +1,65 @@
-#gRPC Naming and Discovery Support
+# gRPC Name Resolution
 
 ## Overview
 
-gRPC supports DNS as the default name-system. A number of alternative name-systems are used in various deployments. We propose an API that is general enough to support a range of name-systems and the corresponding syntax for names. The gRPC client library in various languages will provide a plugin mechanism so resolvers for different name-systems can be plugged in.
+gRPC supports DNS as the default name-system. A number of alternative
+name-systems are used in various deployments. We support an API that is
+general enough to support a range of name-systems and the corresponding
+syntax for names. The gRPC client library in various languages will
+provide a plugin mechanism so resolvers for different name-systems can
+be plugged in.
 
-## Detailed Proposal
+## Detailed Design
 
- A fully qualified, self contained name used for gRPC channel construction uses the syntax:
+### Name Syntax
+
+A fully qualified, self contained name used for gRPC channel construction
+uses the syntax:
 
 ```
 scheme://authority/endpoint_name
 ```
 
-Here, scheme indicates the name-system to be used. Example schemes to be supported include: 
+Here, `scheme` indicates the name-system to be used. Currently, we
+support the following schemes:
+
+- `dns`
+
+- `ipv4` (IPv4 address)
+
+- `ipv6` (IPv6 address)
+
+- `unix` (path to unix domain socket -- unix systems only)
 
-* `dns`
+In the future, additional schemes such as `etcd` could be added.
 
-* `etcd`
+The `authority` indicates some scheme-specific bootstrap information, e.g.,
+for DNS, the authority may include the IP[:port] of the DNS server to
+use. Often, a DNS name may be used as the authority, since the ability to
+resolve DNS names is already built into all gRPC client libraries.
 
-Authority indicates some scheme-specific bootstrap information, e.g., for DNS, the authority may include the IP[:port] of the DNS server to use. Often, a DNS name may used as the authority, since the ability to resolve DNS names is already built into all gRPC client libraries.
+Finally, the `endpoint_name` indicates a concrete name to be looked up
+in a given name-system identified by the scheme and the authority. The
+syntax of the endpoint name is dictated by the scheme in use.
 
-Finally, the  endpoint_name indicates a concrete name to be looked up in a given name-system identified by the scheme and the authority. The syntax of endpoint name is dictated by the scheme in use.
+### Resolver Plugins
 
-### Plugins
+The gRPC client library will use the specified scheme to pick the right
+resolver plugin and pass it the fully qualified name string.
 
-The gRPC client library will switch on the scheme to pick the right resolver plugin and pass it the fully qualified name string.
+Resolvers should be able to contact the authority and get a resolution
+that they return back to the gRPC client library. The returned contents
+include:
 
-Resolvers should be able to contact the authority and get a resolution that they return back to the gRPC client library. The returned contents include a list of IP:port, an optional config and optional auth config data to be used for channel authentication. The plugin API allows the resolvers to continuously watch an endpoint_name and return updated resolutions as needed. 
+- A list of resolved addresses, each of which has three attributes:
+  - The address itself, including both IP address and port.
+  - A boolean indicating whether the address is a backend address (i.e.,
+    the address to use to contact the server directly) or a balancer
+    address (for cases where [external load balancing](load-balancing.md)
+    is in use).
+  - The name of the balancer, if the address is a balancer address.
+    This will be used to perform peer authorization.
+- A [service config](service_config.md).
 
+The plugin API allows the resolvers to continuously watch an endpoint
+and return updated resolutions as needed.
diff --git a/doc/negative-http2-interop-test-descriptions.md b/doc/negative-http2-interop-test-descriptions.md
new file mode 100644
index 0000000000000000000000000000000000000000..b64fe6a024d6f06658b93cf5461e1db73d62ee89
--- /dev/null
+++ b/doc/negative-http2-interop-test-descriptions.md
@@ -0,0 +1,195 @@
+Negative HTTP/2 Interop Test Case Descriptions
+=======================================
+
+Client and server use
+[test.proto](../src/proto/grpc/testing/test.proto).
+
+Server
+------
+The code for the custom http2 server can be found
+[here](https://github.com/grpc/grpc/tree/master/test/http2_test).
+It is responsible for handling requests and sending responses, and also for 
+fulfilling the behavior of each particular test case.
+
+Server should accept these arguments:
+* --port=PORT
+  * The port the server will run on. For example, "8080"
+* --test_case=TESTCASE
+  * The name of the test case to execute. For example, "goaway"
+
+Client
+------
+
+Clients implement test cases that test certain functionality. Each client is
+provided the test case it is expected to run as a command-line parameter. Names
+should be lowercase and without spaces.
+
+Clients should accept these arguments:
+* --server_host=HOSTNAME
+    * The server host to connect to. For example, "localhost" or "127.0.0.1"
+* --server_port=PORT
+    * The server port to connect to. For example, "8080"
+* --test_case=TESTCASE
+    * The name of the test case to execute. For example, "goaway"
+
+Note
+-----
+
+Note that the server and client must be invoked with the same test case or else
+the test will be meaningless. For convenience, we provide a shell script wrapper
+that invokes both server and client at the same time, with the same test_case.
+This is the preferred way to run these tests.
+
+## Test Cases
+
+### goaway
+
+This test verifies that the client correctly responds to a goaway sent by the
+server. The client should handle the goaway by switching to a new stream without
+the user application having to do a thing.
+
+Client Procedure:
+ 1. Client sends two UnaryCall requests (and sleeps for 1 second in-between).
+ TODO: resolve [9300](https://github.com/grpc/grpc/issues/9300) and remove the 1 second sleep
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+
+Client asserts:
+* Both calls are successful.
+* Response payload body is 314159 bytes in size.
+
+Server Procedure:
+  1. Server sends a GOAWAY after receiving the first UnaryCall.
+
+Server asserts:
+* Two different connections were used from the client.
+
+### rst_after_header
+
+This test verifies that the client fails correctly when the server sends a
+RST_STREAM immediately after sending headers to the client.
+
+Procedure:
+ 1. Client sends UnaryCall with:
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+
+Client asserts:
+* Call was not successful.
+
+Server Procedure:
+  1. Server sends a RST_STREAM with error code 0 after sending headers to the client.
+  
+*At the moment the error code and message returned are not standardized throughout all
+languages. Those checks will be added once all client languages behave the same way. [#9142](https://github.com/grpc/grpc/issues/9142) is in flight.*
+
+### rst_during_data
+
+This test verifies that the client fails "correctly" when the server sends a
+RST_STREAM halfway through sending data to the client.
+
+Procedure:
+ 1. Client sends UnaryCall with:
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+
+Client asserts:
+* Call was not successful.
+
+Server Procedure:
+  1. Server sends a RST_STREAM with error code 0 after sending half of 
+     the requested data to the client.
+
+### rst_after_data
+
+This test verifies that the client fails "correctly" when the server sends a
+RST_STREAM after sending all of the data to the client.
+
+Procedure:
+ 1. Client sends UnaryCall with:
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+
+Client asserts:
+* Call was not successful.
+
+Server Procedure:
+  1. Server sends a RST_STREAM with error code 0 after sending all of the
+  data to the client.
+
+*Certain client languages allow the data to be accessed even though a RST_STREAM
+was encountered. Once all client languages behave this way, checks will be added on
+the incoming data.*
+
+### ping
+
+This test verifies that the client correctly acknowledges all pings it gets from the
+server.
+
+Procedure:
+ 1. Client sends UnaryCall with:
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+  
+Client asserts:
+* call was successful.
+* response payload body is 314159 bytes in size.
+
+Server Procedure:
+  1. Server tracks the number of outstanding pings (i.e. +1 when it sends a ping, and -1 
+  when it receives an ack from the client).
+  2. Server sends pings before and after sending headers, also before and after sending data.
+  
+Server Asserts:
+* Number of outstanding pings is 0 when the connection is lost.
+
+### max_streams
+
+This test verifies that the client observes the MAX_CONCURRENT_STREAMS limit set by the server.
+
+Client Procedure:
+  1. Client sends initial UnaryCall to allow the server to update its MAX_CONCURRENT_STREAMS settings.
+  2. Client concurrently sends 10 UnaryCalls.
+  
+Client Asserts:
+* All UnaryCalls were successful, and had the correct type and payload size.
+ 
+Server Procedure:
+  1. Sets MAX_CONCURRENT_STREAMS to one after the connection is made.
+
+*The assertion that the MAX_CONCURRENT_STREAMS limit is upheld occurs in the http2 library we used.*
diff --git a/doc/service_config.md b/doc/service_config.md
new file mode 100644
index 0000000000000000000000000000000000000000..7318b69f214983ceb3745d797d17f40ef841995e
--- /dev/null
+++ b/doc/service_config.md
@@ -0,0 +1,147 @@
+Service Config in gRPC
+======================
+
+# Objective
+
+The service config is a mechanism that allows service owners to publish
+parameters to be automatically used by all clients of their service.
+
+# Format
+
+The service config is a JSON string of the following form:
+
+```
+{
+  # Load balancing policy name.
+  # Supported values are 'round_robin' and 'grpclb'.
+  # Optional; if unset, the default behavior is pick the first available
+  # backend.
+  # Note that if the resolver returns only balancer addresses and no
+  # backend addresses, gRPC will always use the 'grpclb' policy,
+  # regardless of what this field is set to.
+  'loadBalancingPolicy': string,
+
+  # Per-method configuration.  Optional.
+  'methodConfig': [
+    {
+      # The names of the methods to which this method config applies. There
+      # must be at least one name. Each name entry must be unique across the
+      # entire service config. If the 'method' field is empty, then this
+      # method config specifies the defaults for all methods for the specified
+      # service.
+      #
+      # For example, let's say that the service config contains the following
+      # method config entries:
+      #
+      # 'methodConfig': [
+      #   { 'name': [ { 'service': 'MyService' } ] ... },
+      #   { 'name': [ { 'service': 'MyService', 'method': 'Foo' } ] ... }
+      # ]
+      #
+      # For a request for MyService/Foo, we will use the second entry, because
+      # it exactly matches the service and method name.
+      # For a request for MyService/Bar, we will use the first entry, because
+      # it provides the default for all methods of MyService.
+      'name': [
+        {
+          # RPC service name.  Required.
+          # If using gRPC with protobuf as the IDL, then this will be of
+          # the form "pkg.service_name", where "pkg" is the package name
+          # defined in the proto file.
+          'service': string,
+
+          # RPC method name.  Optional (see above).
+          'method': string,
+        }
+      ],
+
+      # Whether RPCs sent to this method should wait until the connection is
+      # ready by default. If false, the RPC will abort immediately if there
+      # is a transient failure connecting to the server. Otherwise, gRPC will
+      # attempt to connect until the deadline is exceeded.
+      #
+      # The value specified via the gRPC client API will override the value
+      # set here. However, note that setting the value in the client API will
+      # also affect transient errors encountered during name resolution,
+      # which cannot be caught by the value here, since the service config
+      # is obtained by the gRPC client via name resolution.
+      'waitForReady': bool,
+
+      # The default timeout in seconds for RPCs sent to this method. This can
+      # be overridden in code. If no reply is received in the specified amount
+      # of time, the request is aborted and a deadline-exceeded error status
+      # is returned to the caller.
+      #
+      # The actual deadline used will be the minimum of the value specified
+      # here and the value set by the application via the gRPC client API.
+      # If either one is not set, then the other will be used.
+      # If neither is set, then the request has no deadline.
+      #
+      # The format of the value is that of the 'Duration' type defined here:
+      # https://developers.google.com/protocol-buffers/docs/proto3#json
+      'timeout': string,
+
+      # The maximum allowed payload size for an individual request or object
+      # in a stream (client->server) in bytes. The size which is measured is
+      # the serialized, uncompressed payload in bytes. This applies both
+      # to streaming and non-streaming requests.
+      #
+      # The actual value used is the minimum of the value specified here and
+      # the value set by the application via the gRPC client API.
+      # If either one is not set, then the other will be used.
+      # If neither is set, then the built-in default is used.
+      #
+      # If a client attempts to send an object larger than this value, it
+      # will not be sent and the client will see an error.
+      # Note that 0 is a valid value, meaning that the request message must
+      # be empty.
+      #
+      # The format of the value is that of the 'uint64' type defined here:
+      # https://developers.google.com/protocol-buffers/docs/proto3#json
+      'maxRequestMessageBytes': string,
+
+      # The maximum allowed payload size for an individual response or object
+      # in a stream (server->client) in bytes. The size which is measured is
+      # the serialized, uncompressed payload in bytes. This applies both
+      # to streaming and non-streaming requests.
+      #
+      # The actual value used is the minimum of the value specified here and
+      # the value set by the application via the gRPC client API.
+      # If either one is not set, then the other will be used.
+      # If neither is set, then the built-in default is used.
+      #
+      # If a server attempts to send an object larger than this value, it
+      # will not be sent, and the client will see an error.
+      # Note that 0 is a valid value, meaning that the response message must
+      # be empty.
+      #
+      # The format of the value is that of the 'uint64' type defined here:
+      # https://developers.google.com/protocol-buffers/docs/proto3#json
+      'maxResponseMessageBytes': string
+    }
+  ]
+}
+```
+
+Note that new per-method parameters may be added in the future as new
+functionality is introduced.
+
+# Architecture
+
+A service config is associated with a server name.  The [name
+resolver](naming.md) plugin, when asked to resolve a particular server
+name, will return both the resolved addresses and the service config.
+
+TODO(roth): Design how the service config will be encoded in DNS.
+
+# APIs
+
+The service config is used in the following APIs:
+
+- In the resolver API, used by resolver plugins to return the service
+  config to the gRPC client.
+- In the gRPC client API, where users can query the channel to obtain
+  the service config associated with the channel (for debugging
+  purposes).
+- In the gRPC client API, where users can set the service config
+  explicitly.  This is intended for use in unit tests.
diff --git a/examples/cpp/helloworld/BUILD b/examples/cpp/helloworld/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..b9c3f5dfbed91b87a6a2911ae689980e589efc2d
--- /dev/null
+++ b/examples/cpp/helloworld/BUILD
@@ -0,0 +1,42 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+cc_binary(
+    name = "greeter_client",
+    srcs = ["greeter_client.cc"],
+    deps = ["//examples/protos:helloworld"],
+    defines = ["BAZEL_BUILD"],
+)
+
+cc_binary(
+    name = "greeter_server",
+    srcs = ["greeter_server.cc"],
+    deps = ["//examples/protos:helloworld"],
+    defines = ["BAZEL_BUILD"],
+)
diff --git a/examples/cpp/helloworld/greeter_client.cc b/examples/cpp/helloworld/greeter_client.cc
index 61f3953056a8478dceb8689f308a16e3d4c41363..8ee33b1383b3ec63ca08bfc0476b29be14087d29 100644
--- a/examples/cpp/helloworld/greeter_client.cc
+++ b/examples/cpp/helloworld/greeter_client.cc
@@ -37,7 +37,11 @@
 
 #include <grpc++/grpc++.h>
 
+#ifdef BAZEL_BUILD
+#include "examples/protos/helloworld.grpc.pb.h"
+#else
 #include "helloworld.grpc.pb.h"
+#endif
 
 using grpc::Channel;
 using grpc::ClientContext;
diff --git a/examples/cpp/helloworld/greeter_server.cc b/examples/cpp/helloworld/greeter_server.cc
index 9eab32c62b481ef45135797b64f4619ed3420399..c8a6d8ae86aff1f6c1550f8db2ffc88e0ecc6dd0 100644
--- a/examples/cpp/helloworld/greeter_server.cc
+++ b/examples/cpp/helloworld/greeter_server.cc
@@ -37,7 +37,11 @@
 
 #include <grpc++/grpc++.h>
 
+#ifdef BAZEL_BUILD
+#include "examples/protos/helloworld.grpc.pb.h"
+#else
 #include "helloworld.grpc.pb.h"
+#endif
 
 using grpc::Server;
 using grpc::ServerBuilder;
diff --git a/examples/protos/BUILD b/examples/protos/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..2ffdf64f9af540d48fbebd64581e11226af18421
--- /dev/null
+++ b/examples/protos/BUILD
@@ -0,0 +1,52 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package(default_visibility = ["//visibility:public"])
+
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
+
+grpc_proto_library(
+    name = "auth_sample",
+    srcs = ["auth_sample.proto"],
+)
+
+grpc_proto_library(
+    name = "hellostreamingworld",
+    srcs = ["hellostreamingworld.proto"],
+)
+
+grpc_proto_library(
+    name = "helloworld",
+    srcs = ["helloworld.proto"],
+)
+
+grpc_proto_library(
+    name = "route_guide",
+    srcs = ["route_guide.proto"],
+)
diff --git a/examples/python/helloworld/greeter_client.py b/examples/python/helloworld/greeter_client.py
index 44d42c102b5f864ab4a36d25c488966bbdc0d946..281a68f3c3d3e221d6486f4e09208df447ebb2e1 100644
--- a/examples/python/helloworld/greeter_client.py
+++ b/examples/python/helloworld/greeter_client.py
@@ -34,11 +34,12 @@ from __future__ import print_function
 import grpc
 
 import helloworld_pb2
+import helloworld_pb2_grpc
 
 
 def run():
   channel = grpc.insecure_channel('localhost:50051')
-  stub = helloworld_pb2.GreeterStub(channel)
+  stub = helloworld_pb2_grpc.GreeterStub(channel)
   response = stub.SayHello(helloworld_pb2.HelloRequest(name='you'))
   print("Greeter client received: " + response.message)
 
diff --git a/examples/python/helloworld/greeter_server.py b/examples/python/helloworld/greeter_server.py
index 37d8bd49ccdce81e2dc5e26be289da55cc289172..0afc21d243fe90bf34c53d6e9791950fc4834490 100644
--- a/examples/python/helloworld/greeter_server.py
+++ b/examples/python/helloworld/greeter_server.py
@@ -35,11 +35,12 @@ import time
 import grpc
 
 import helloworld_pb2
+import helloworld_pb2_grpc
 
 _ONE_DAY_IN_SECONDS = 60 * 60 * 24
 
 
-class Greeter(helloworld_pb2.GreeterServicer):
+class Greeter(helloworld_pb2_grpc.GreeterServicer):
 
   def SayHello(self, request, context):
     return helloworld_pb2.HelloReply(message='Hello, %s!' % request.name)
@@ -47,7 +48,7 @@ class Greeter(helloworld_pb2.GreeterServicer):
 
 def serve():
   server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-  helloworld_pb2.add_GreeterServicer_to_server(Greeter(), server)
+  helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server)
   server.add_insecure_port('[::]:50051')
   server.start()
   try:
diff --git a/examples/python/helloworld/helloworld_pb2.py b/examples/python/helloworld/helloworld_pb2.py
index 3ce33fbf2bf36f011a2a871ab0d48cc926c60d1d..6665b1f6878f492e24fd1cf85372d9766c3cf9c1 100644
--- a/examples/python/helloworld/helloworld_pb2.py
+++ b/examples/python/helloworld/helloworld_pb2.py
@@ -107,98 +107,123 @@ _sym_db.RegisterMessage(HelloReply)
 
 DESCRIPTOR.has_options = True
 DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\033io.grpc.examples.helloworldB\017HelloWorldProtoP\001\242\002\003HLW'))
-import grpc
-from grpc.beta import implementations as beta_implementations
-from grpc.beta import interfaces as beta_interfaces
-from grpc.framework.common import cardinality
-from grpc.framework.interfaces.face import utilities as face_utilities
+try:
+  # THESE ELEMENTS WILL BE DEPRECATED.
+  # Please use the generated *_pb2_grpc.py files instead.
+  import grpc
+  from grpc.framework.common import cardinality
+  from grpc.framework.interfaces.face import utilities as face_utilities
+  from grpc.beta import implementations as beta_implementations
+  from grpc.beta import interfaces as beta_interfaces
+
+
+  class GreeterStub(object):
+    """The greeting service definition.
+    """
 
+    def __init__(self, channel):
+      """Constructor.
 
-class GreeterStub(object):
-  """The greeting service definition.
-  """
+      Args:
+        channel: A grpc.Channel.
+      """
+      self.SayHello = channel.unary_unary(
+          '/helloworld.Greeter/SayHello',
+          request_serializer=HelloRequest.SerializeToString,
+          response_deserializer=HelloReply.FromString,
+          )
 
-  def __init__(self, channel):
-    """Constructor.
 
-    Args:
-      channel: A grpc.Channel.
+  class GreeterServicer(object):
+    """The greeting service definition.
     """
-    self.SayHello = channel.unary_unary(
-        '/helloworld.Greeter/SayHello',
-        request_serializer=HelloRequest.SerializeToString,
-        response_deserializer=HelloReply.FromString,
-        )
-
-
-class GreeterServicer(object):
-  """The greeting service definition.
-  """
 
-  def SayHello(self, request, context):
-    """Sends a greeting
+    def SayHello(self, request, context):
+      """Sends a greeting
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+
+  def add_GreeterServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+        'SayHello': grpc.unary_unary_rpc_method_handler(
+            servicer.SayHello,
+            request_deserializer=HelloRequest.FromString,
+            response_serializer=HelloReply.SerializeToString,
+        ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+        'helloworld.Greeter', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+  class BetaGreeterServicer(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """The greeting service definition.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-
-def add_GreeterServicer_to_server(servicer, server):
-  rpc_method_handlers = {
-      'SayHello': grpc.unary_unary_rpc_method_handler(
-          servicer.SayHello,
-          request_deserializer=HelloRequest.FromString,
-          response_serializer=HelloReply.SerializeToString,
-      ),
-  }
-  generic_handler = grpc.method_handlers_generic_handler(
-      'helloworld.Greeter', rpc_method_handlers)
-  server.add_generic_rpc_handlers((generic_handler,))
-
-
-class BetaGreeterServicer(object):
-  """The greeting service definition.
-  """
-  def SayHello(self, request, context):
-    """Sends a greeting
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def SayHello(self, request, context):
+      """Sends a greeting
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+
 
+  class BetaGreeterStub(object):
+    """The Beta API is deprecated for 0.15.0 and later.
 
-class BetaGreeterStub(object):
-  """The greeting service definition.
-  """
-  def SayHello(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """Sends a greeting
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """The greeting service definition.
     """
-    raise NotImplementedError()
-  SayHello.future = None
-
-
-def beta_create_Greeter_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
-  request_deserializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloRequest.FromString,
-  }
-  response_serializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloReply.SerializeToString,
-  }
-  method_implementations = {
-    ('helloworld.Greeter', 'SayHello'): face_utilities.unary_unary_inline(servicer.SayHello),
-  }
-  server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
-  return beta_implementations.server(method_implementations, options=server_options)
-
-
-def beta_create_Greeter_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
-  request_serializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloRequest.SerializeToString,
-  }
-  response_deserializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloReply.FromString,
-  }
-  cardinalities = {
-    'SayHello': cardinality.Cardinality.UNARY_UNARY,
-  }
-  stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
-  return beta_implementations.dynamic_stub(channel, 'helloworld.Greeter', cardinalities, options=stub_options)
+    def SayHello(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """Sends a greeting
+      """
+      raise NotImplementedError()
+    SayHello.future = None
+
+
+  def beta_create_Greeter_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_deserializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloRequest.FromString,
+    }
+    response_serializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloReply.SerializeToString,
+    }
+    method_implementations = {
+      ('helloworld.Greeter', 'SayHello'): face_utilities.unary_unary_inline(servicer.SayHello),
+    }
+    server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+    return beta_implementations.server(method_implementations, options=server_options)
+
+
+  def beta_create_Greeter_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_serializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloRequest.SerializeToString,
+    }
+    response_deserializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloReply.FromString,
+    }
+    cardinalities = {
+      'SayHello': cardinality.Cardinality.UNARY_UNARY,
+    }
+    stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
+    return beta_implementations.dynamic_stub(channel, 'helloworld.Greeter', cardinalities, options=stub_options)
+except ImportError:
+  pass
 # @@protoc_insertion_point(module_scope)
diff --git a/examples/python/helloworld/helloworld_pb2_grpc.py b/examples/python/helloworld/helloworld_pb2_grpc.py
new file mode 100644
index 0000000000000000000000000000000000000000..682dc36cd89fb3d1c5b7b1da58f90e3c69a1d977
--- /dev/null
+++ b/examples/python/helloworld/helloworld_pb2_grpc.py
@@ -0,0 +1,47 @@
+import grpc
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+
+import helloworld_pb2 as helloworld__pb2
+
+
+class GreeterStub(object):
+  """The greeting service definition.
+  """
+
+  def __init__(self, channel):
+    """Constructor.
+
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.SayHello = channel.unary_unary(
+        '/helloworld.Greeter/SayHello',
+        request_serializer=helloworld__pb2.HelloRequest.SerializeToString,
+        response_deserializer=helloworld__pb2.HelloReply.FromString,
+        )
+
+
+class GreeterServicer(object):
+  """The greeting service definition.
+  """
+
+  def SayHello(self, request, context):
+    """Sends a greeting
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_GreeterServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'SayHello': grpc.unary_unary_rpc_method_handler(
+          servicer.SayHello,
+          request_deserializer=helloworld__pb2.HelloRequest.FromString,
+          response_serializer=helloworld__pb2.HelloReply.SerializeToString,
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'helloworld.Greeter', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))
diff --git a/examples/python/multiplex/helloworld_pb2.py b/examples/python/multiplex/helloworld_pb2.py
index 3ce33fbf2bf36f011a2a871ab0d48cc926c60d1d..6665b1f6878f492e24fd1cf85372d9766c3cf9c1 100644
--- a/examples/python/multiplex/helloworld_pb2.py
+++ b/examples/python/multiplex/helloworld_pb2.py
@@ -107,98 +107,123 @@ _sym_db.RegisterMessage(HelloReply)
 
 DESCRIPTOR.has_options = True
 DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\033io.grpc.examples.helloworldB\017HelloWorldProtoP\001\242\002\003HLW'))
-import grpc
-from grpc.beta import implementations as beta_implementations
-from grpc.beta import interfaces as beta_interfaces
-from grpc.framework.common import cardinality
-from grpc.framework.interfaces.face import utilities as face_utilities
+try:
+  # THESE ELEMENTS WILL BE DEPRECATED.
+  # Please use the generated *_pb2_grpc.py files instead.
+  import grpc
+  from grpc.framework.common import cardinality
+  from grpc.framework.interfaces.face import utilities as face_utilities
+  from grpc.beta import implementations as beta_implementations
+  from grpc.beta import interfaces as beta_interfaces
+
+
+  class GreeterStub(object):
+    """The greeting service definition.
+    """
 
+    def __init__(self, channel):
+      """Constructor.
 
-class GreeterStub(object):
-  """The greeting service definition.
-  """
+      Args:
+        channel: A grpc.Channel.
+      """
+      self.SayHello = channel.unary_unary(
+          '/helloworld.Greeter/SayHello',
+          request_serializer=HelloRequest.SerializeToString,
+          response_deserializer=HelloReply.FromString,
+          )
 
-  def __init__(self, channel):
-    """Constructor.
 
-    Args:
-      channel: A grpc.Channel.
+  class GreeterServicer(object):
+    """The greeting service definition.
     """
-    self.SayHello = channel.unary_unary(
-        '/helloworld.Greeter/SayHello',
-        request_serializer=HelloRequest.SerializeToString,
-        response_deserializer=HelloReply.FromString,
-        )
-
-
-class GreeterServicer(object):
-  """The greeting service definition.
-  """
 
-  def SayHello(self, request, context):
-    """Sends a greeting
+    def SayHello(self, request, context):
+      """Sends a greeting
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+
+  def add_GreeterServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+        'SayHello': grpc.unary_unary_rpc_method_handler(
+            servicer.SayHello,
+            request_deserializer=HelloRequest.FromString,
+            response_serializer=HelloReply.SerializeToString,
+        ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+        'helloworld.Greeter', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+  class BetaGreeterServicer(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """The greeting service definition.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-
-def add_GreeterServicer_to_server(servicer, server):
-  rpc_method_handlers = {
-      'SayHello': grpc.unary_unary_rpc_method_handler(
-          servicer.SayHello,
-          request_deserializer=HelloRequest.FromString,
-          response_serializer=HelloReply.SerializeToString,
-      ),
-  }
-  generic_handler = grpc.method_handlers_generic_handler(
-      'helloworld.Greeter', rpc_method_handlers)
-  server.add_generic_rpc_handlers((generic_handler,))
-
-
-class BetaGreeterServicer(object):
-  """The greeting service definition.
-  """
-  def SayHello(self, request, context):
-    """Sends a greeting
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def SayHello(self, request, context):
+      """Sends a greeting
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+
 
+  class BetaGreeterStub(object):
+    """The Beta API is deprecated for 0.15.0 and later.
 
-class BetaGreeterStub(object):
-  """The greeting service definition.
-  """
-  def SayHello(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """Sends a greeting
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """The greeting service definition.
     """
-    raise NotImplementedError()
-  SayHello.future = None
-
-
-def beta_create_Greeter_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
-  request_deserializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloRequest.FromString,
-  }
-  response_serializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloReply.SerializeToString,
-  }
-  method_implementations = {
-    ('helloworld.Greeter', 'SayHello'): face_utilities.unary_unary_inline(servicer.SayHello),
-  }
-  server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
-  return beta_implementations.server(method_implementations, options=server_options)
-
-
-def beta_create_Greeter_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
-  request_serializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloRequest.SerializeToString,
-  }
-  response_deserializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloReply.FromString,
-  }
-  cardinalities = {
-    'SayHello': cardinality.Cardinality.UNARY_UNARY,
-  }
-  stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
-  return beta_implementations.dynamic_stub(channel, 'helloworld.Greeter', cardinalities, options=stub_options)
+    def SayHello(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """Sends a greeting
+      """
+      raise NotImplementedError()
+    SayHello.future = None
+
+
+  def beta_create_Greeter_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_deserializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloRequest.FromString,
+    }
+    response_serializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloReply.SerializeToString,
+    }
+    method_implementations = {
+      ('helloworld.Greeter', 'SayHello'): face_utilities.unary_unary_inline(servicer.SayHello),
+    }
+    server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+    return beta_implementations.server(method_implementations, options=server_options)
+
+
+  def beta_create_Greeter_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_serializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloRequest.SerializeToString,
+    }
+    response_deserializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloReply.FromString,
+    }
+    cardinalities = {
+      'SayHello': cardinality.Cardinality.UNARY_UNARY,
+    }
+    stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
+    return beta_implementations.dynamic_stub(channel, 'helloworld.Greeter', cardinalities, options=stub_options)
+except ImportError:
+  pass
 # @@protoc_insertion_point(module_scope)
diff --git a/examples/python/multiplex/helloworld_pb2_grpc.py b/examples/python/multiplex/helloworld_pb2_grpc.py
new file mode 100644
index 0000000000000000000000000000000000000000..682dc36cd89fb3d1c5b7b1da58f90e3c69a1d977
--- /dev/null
+++ b/examples/python/multiplex/helloworld_pb2_grpc.py
@@ -0,0 +1,47 @@
+import grpc
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+
+import helloworld_pb2 as helloworld__pb2
+
+
+class GreeterStub(object):
+  """The greeting service definition.
+  """
+
+  def __init__(self, channel):
+    """Constructor.
+
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.SayHello = channel.unary_unary(
+        '/helloworld.Greeter/SayHello',
+        request_serializer=helloworld__pb2.HelloRequest.SerializeToString,
+        response_deserializer=helloworld__pb2.HelloReply.FromString,
+        )
+
+
+class GreeterServicer(object):
+  """The greeting service definition.
+  """
+
+  def SayHello(self, request, context):
+    """Sends a greeting
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_GreeterServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'SayHello': grpc.unary_unary_rpc_method_handler(
+          servicer.SayHello,
+          request_deserializer=helloworld__pb2.HelloRequest.FromString,
+          response_serializer=helloworld__pb2.HelloReply.SerializeToString,
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'helloworld.Greeter', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))
diff --git a/examples/python/multiplex/multiplex_client.py b/examples/python/multiplex/multiplex_client.py
index 2e8162926b777f3f50b53dd76608e8d404182cde..b2d2021e029a0ec4179659408451fa5c7362fd87 100644
--- a/examples/python/multiplex/multiplex_client.py
+++ b/examples/python/multiplex/multiplex_client.py
@@ -37,7 +37,9 @@ import time
 import grpc
 
 import helloworld_pb2
+import helloworld_pb2_grpc
 import route_guide_pb2
+import route_guide_pb2_grpc
 import route_guide_resources
 
 
@@ -120,8 +122,8 @@ def guide_route_chat(route_guide_stub):
 
 def run():
   channel = grpc.insecure_channel('localhost:50051')
-  greeter_stub = helloworld_pb2.GreeterStub(channel)
-  route_guide_stub = route_guide_pb2.RouteGuideStub(channel)
+  greeter_stub = helloworld_pb2_grpc.GreeterStub(channel)
+  route_guide_stub = route_guide_pb2_grpc.RouteGuideStub(channel)
   greeter_response = greeter_stub.SayHello(
       helloworld_pb2.HelloRequest(name='you'))
   print("Greeter client received: " + greeter_response.message)
diff --git a/examples/python/multiplex/multiplex_server.py b/examples/python/multiplex/multiplex_server.py
index 32a4ee4a4977fb948d684c270268a5ebbd4d49a0..b8b32e7bf8d1edccc8110797e9136ee14a6c725b 100644
--- a/examples/python/multiplex/multiplex_server.py
+++ b/examples/python/multiplex/multiplex_server.py
@@ -36,7 +36,9 @@ import math
 import grpc
 
 import helloworld_pb2
+import helloworld_pb2_grpc
 import route_guide_pb2
+import route_guide_pb2_grpc
 import route_guide_resources
 
 _ONE_DAY_IN_SECONDS = 60 * 60 * 24
@@ -70,13 +72,13 @@ def _get_distance(start, end):
   return R * c;
 
 
-class _GreeterServicer(helloworld_pb2.GreeterServicer):
+class _GreeterServicer(helloworld_pb2_grpc.GreeterServicer):
 
   def SayHello(self, request, context):
     return helloworld_pb2.HelloReply(message='Hello, {}!'.format(request.name))
 
 
-class _RouteGuideServicer(route_guide_pb2.RouteGuideServicer):
+class _RouteGuideServicer(route_guide_pb2_grpc.RouteGuideServicer):
   """Provides methods that implement functionality of route guide server."""
 
   def __init__(self):
@@ -133,8 +135,8 @@ class _RouteGuideServicer(route_guide_pb2.RouteGuideServicer):
 
 def serve():
   server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-  helloworld_pb2.add_GreeterServicer_to_server(_GreeterServicer(), server)
-  route_guide_pb2.add_RouteGuideServicer_to_server(
+  helloworld_pb2_grpc.add_GreeterServicer_to_server(_GreeterServicer(), server)
+  route_guide_pb2_grpc.add_RouteGuideServicer_to_server(
       _RouteGuideServicer(), server)
   server.add_insecure_port('[::]:50051')
   server.start()
diff --git a/examples/python/multiplex/route_guide_pb2.py b/examples/python/multiplex/route_guide_pb2.py
index 924e186e06e4ca1094a3c648bf3748f79393464c..e6775eb8140f9eae5c7d466b1d1a88248373a4ab 100644
--- a/examples/python/multiplex/route_guide_pb2.py
+++ b/examples/python/multiplex/route_guide_pb2.py
@@ -277,240 +277,265 @@ _sym_db.RegisterMessage(RouteSummary)
 
 DESCRIPTOR.has_options = True
 DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\033io.grpc.examples.routeguideB\017RouteGuideProtoP\001\242\002\003RTG'))
-import grpc
-from grpc.beta import implementations as beta_implementations
-from grpc.beta import interfaces as beta_interfaces
-from grpc.framework.common import cardinality
-from grpc.framework.interfaces.face import utilities as face_utilities
-
-
-class RouteGuideStub(object):
-  """Interface exported by the server.
-  """
-
-  def __init__(self, channel):
-    """Constructor.
-
-    Args:
-      channel: A grpc.Channel.
+try:
+  # THESE ELEMENTS WILL BE DEPRECATED.
+  # Please use the generated *_pb2_grpc.py files instead.
+  import grpc
+  from grpc.framework.common import cardinality
+  from grpc.framework.interfaces.face import utilities as face_utilities
+  from grpc.beta import implementations as beta_implementations
+  from grpc.beta import interfaces as beta_interfaces
+
+
+  class RouteGuideStub(object):
+    """Interface exported by the server.
     """
-    self.GetFeature = channel.unary_unary(
-        '/routeguide.RouteGuide/GetFeature',
-        request_serializer=Point.SerializeToString,
-        response_deserializer=Feature.FromString,
-        )
-    self.ListFeatures = channel.unary_stream(
-        '/routeguide.RouteGuide/ListFeatures',
-        request_serializer=Rectangle.SerializeToString,
-        response_deserializer=Feature.FromString,
-        )
-    self.RecordRoute = channel.stream_unary(
-        '/routeguide.RouteGuide/RecordRoute',
-        request_serializer=Point.SerializeToString,
-        response_deserializer=RouteSummary.FromString,
-        )
-    self.RouteChat = channel.stream_stream(
-        '/routeguide.RouteGuide/RouteChat',
-        request_serializer=RouteNote.SerializeToString,
-        response_deserializer=RouteNote.FromString,
-        )
-
-
-class RouteGuideServicer(object):
-  """Interface exported by the server.
-  """
-
-  def GetFeature(self, request, context):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def ListFeatures(self, request, context):
-    """A server-to-client streaming RPC.
 
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
+    def __init__(self, channel):
+      """Constructor.
+
+      Args:
+        channel: A grpc.Channel.
+      """
+      self.GetFeature = channel.unary_unary(
+          '/routeguide.RouteGuide/GetFeature',
+          request_serializer=Point.SerializeToString,
+          response_deserializer=Feature.FromString,
+          )
+      self.ListFeatures = channel.unary_stream(
+          '/routeguide.RouteGuide/ListFeatures',
+          request_serializer=Rectangle.SerializeToString,
+          response_deserializer=Feature.FromString,
+          )
+      self.RecordRoute = channel.stream_unary(
+          '/routeguide.RouteGuide/RecordRoute',
+          request_serializer=Point.SerializeToString,
+          response_deserializer=RouteSummary.FromString,
+          )
+      self.RouteChat = channel.stream_stream(
+          '/routeguide.RouteGuide/RouteChat',
+          request_serializer=RouteNote.SerializeToString,
+          response_deserializer=RouteNote.FromString,
+          )
+
+
+  class RouteGuideServicer(object):
+    """Interface exported by the server.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def RecordRoute(self, request_iterator, context):
-    """A client-to-server streaming RPC.
 
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
+    def GetFeature(self, request, context):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def ListFeatures(self, request, context):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def RecordRoute(self, request_iterator, context):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def RouteChat(self, request_iterator, context):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+
+  def add_RouteGuideServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+        'GetFeature': grpc.unary_unary_rpc_method_handler(
+            servicer.GetFeature,
+            request_deserializer=Point.FromString,
+            response_serializer=Feature.SerializeToString,
+        ),
+        'ListFeatures': grpc.unary_stream_rpc_method_handler(
+            servicer.ListFeatures,
+            request_deserializer=Rectangle.FromString,
+            response_serializer=Feature.SerializeToString,
+        ),
+        'RecordRoute': grpc.stream_unary_rpc_method_handler(
+            servicer.RecordRoute,
+            request_deserializer=Point.FromString,
+            response_serializer=RouteSummary.SerializeToString,
+        ),
+        'RouteChat': grpc.stream_stream_rpc_method_handler(
+            servicer.RouteChat,
+            request_deserializer=RouteNote.FromString,
+            response_serializer=RouteNote.SerializeToString,
+        ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+        'routeguide.RouteGuide', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+  class BetaRouteGuideServicer(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """Interface exported by the server.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def RouteChat(self, request_iterator, context):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
-    """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-
-def add_RouteGuideServicer_to_server(servicer, server):
-  rpc_method_handlers = {
-      'GetFeature': grpc.unary_unary_rpc_method_handler(
-          servicer.GetFeature,
-          request_deserializer=Point.FromString,
-          response_serializer=Feature.SerializeToString,
-      ),
-      'ListFeatures': grpc.unary_stream_rpc_method_handler(
-          servicer.ListFeatures,
-          request_deserializer=Rectangle.FromString,
-          response_serializer=Feature.SerializeToString,
-      ),
-      'RecordRoute': grpc.stream_unary_rpc_method_handler(
-          servicer.RecordRoute,
-          request_deserializer=Point.FromString,
-          response_serializer=RouteSummary.SerializeToString,
-      ),
-      'RouteChat': grpc.stream_stream_rpc_method_handler(
-          servicer.RouteChat,
-          request_deserializer=RouteNote.FromString,
-          response_serializer=RouteNote.SerializeToString,
-      ),
-  }
-  generic_handler = grpc.method_handlers_generic_handler(
-      'routeguide.RouteGuide', rpc_method_handlers)
-  server.add_generic_rpc_handlers((generic_handler,))
-
-
-class BetaRouteGuideServicer(object):
-  """Interface exported by the server.
-  """
-  def GetFeature(self, request, context):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def ListFeatures(self, request, context):
-    """A server-to-client streaming RPC.
-
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def RecordRoute(self, request_iterator, context):
-    """A client-to-server streaming RPC.
-
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def RouteChat(self, request_iterator, context):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-
-
-class BetaRouteGuideStub(object):
-  """Interface exported by the server.
-  """
-  def GetFeature(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    raise NotImplementedError()
-  GetFeature.future = None
-  def ListFeatures(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A server-to-client streaming RPC.
-
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
-    """
-    raise NotImplementedError()
-  def RecordRoute(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A client-to-server streaming RPC.
-
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
-    """
-    raise NotImplementedError()
-  RecordRoute.future = None
-  def RouteChat(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
+    def GetFeature(self, request, context):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def ListFeatures(self, request, context):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def RecordRoute(self, request_iterator, context):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def RouteChat(self, request_iterator, context):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+
+
+  class BetaRouteGuideStub(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """Interface exported by the server.
     """
-    raise NotImplementedError()
-
-
-def beta_create_RouteGuide_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
-  request_deserializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Point.FromString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.FromString,
-    ('routeguide.RouteGuide', 'RecordRoute'): Point.FromString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
-  }
-  response_serializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Feature.SerializeToString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Feature.SerializeToString,
-    ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.SerializeToString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
-  }
-  method_implementations = {
-    ('routeguide.RouteGuide', 'GetFeature'): face_utilities.unary_unary_inline(servicer.GetFeature),
-    ('routeguide.RouteGuide', 'ListFeatures'): face_utilities.unary_stream_inline(servicer.ListFeatures),
-    ('routeguide.RouteGuide', 'RecordRoute'): face_utilities.stream_unary_inline(servicer.RecordRoute),
-    ('routeguide.RouteGuide', 'RouteChat'): face_utilities.stream_stream_inline(servicer.RouteChat),
-  }
-  server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
-  return beta_implementations.server(method_implementations, options=server_options)
-
-
-def beta_create_RouteGuide_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
-  request_serializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Point.SerializeToString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.SerializeToString,
-    ('routeguide.RouteGuide', 'RecordRoute'): Point.SerializeToString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
-  }
-  response_deserializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Feature.FromString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Feature.FromString,
-    ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.FromString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
-  }
-  cardinalities = {
-    'GetFeature': cardinality.Cardinality.UNARY_UNARY,
-    'ListFeatures': cardinality.Cardinality.UNARY_STREAM,
-    'RecordRoute': cardinality.Cardinality.STREAM_UNARY,
-    'RouteChat': cardinality.Cardinality.STREAM_STREAM,
-  }
-  stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
-  return beta_implementations.dynamic_stub(channel, 'routeguide.RouteGuide', cardinalities, options=stub_options)
+    def GetFeature(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      raise NotImplementedError()
+    GetFeature.future = None
+    def ListFeatures(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      raise NotImplementedError()
+    def RecordRoute(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      raise NotImplementedError()
+    RecordRoute.future = None
+    def RouteChat(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      raise NotImplementedError()
+
+
+  def beta_create_RouteGuide_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_deserializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Point.FromString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.FromString,
+      ('routeguide.RouteGuide', 'RecordRoute'): Point.FromString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
+    }
+    response_serializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Feature.SerializeToString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Feature.SerializeToString,
+      ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.SerializeToString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
+    }
+    method_implementations = {
+      ('routeguide.RouteGuide', 'GetFeature'): face_utilities.unary_unary_inline(servicer.GetFeature),
+      ('routeguide.RouteGuide', 'ListFeatures'): face_utilities.unary_stream_inline(servicer.ListFeatures),
+      ('routeguide.RouteGuide', 'RecordRoute'): face_utilities.stream_unary_inline(servicer.RecordRoute),
+      ('routeguide.RouteGuide', 'RouteChat'): face_utilities.stream_stream_inline(servicer.RouteChat),
+    }
+    server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+    return beta_implementations.server(method_implementations, options=server_options)
+
+
+  def beta_create_RouteGuide_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_serializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Point.SerializeToString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.SerializeToString,
+      ('routeguide.RouteGuide', 'RecordRoute'): Point.SerializeToString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
+    }
+    response_deserializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Feature.FromString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Feature.FromString,
+      ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.FromString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
+    }
+    cardinalities = {
+      'GetFeature': cardinality.Cardinality.UNARY_UNARY,
+      'ListFeatures': cardinality.Cardinality.UNARY_STREAM,
+      'RecordRoute': cardinality.Cardinality.STREAM_UNARY,
+      'RouteChat': cardinality.Cardinality.STREAM_STREAM,
+    }
+    stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
+    return beta_implementations.dynamic_stub(channel, 'routeguide.RouteGuide', cardinalities, options=stub_options)
+except ImportError:
+  pass
 # @@protoc_insertion_point(module_scope)
diff --git a/examples/python/multiplex/route_guide_pb2_grpc.py b/examples/python/multiplex/route_guide_pb2_grpc.py
new file mode 100644
index 0000000000000000000000000000000000000000..27b24c747dbd1ec383e70b71ca6230502822cb63
--- /dev/null
+++ b/examples/python/multiplex/route_guide_pb2_grpc.py
@@ -0,0 +1,114 @@
+import grpc
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+
+import route_guide_pb2 as route__guide__pb2
+
+
+class RouteGuideStub(object):
+  """Interface exported by the server.
+  """
+
+  def __init__(self, channel):
+    """Constructor.
+
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.GetFeature = channel.unary_unary(
+        '/routeguide.RouteGuide/GetFeature',
+        request_serializer=route__guide__pb2.Point.SerializeToString,
+        response_deserializer=route__guide__pb2.Feature.FromString,
+        )
+    self.ListFeatures = channel.unary_stream(
+        '/routeguide.RouteGuide/ListFeatures',
+        request_serializer=route__guide__pb2.Rectangle.SerializeToString,
+        response_deserializer=route__guide__pb2.Feature.FromString,
+        )
+    self.RecordRoute = channel.stream_unary(
+        '/routeguide.RouteGuide/RecordRoute',
+        request_serializer=route__guide__pb2.Point.SerializeToString,
+        response_deserializer=route__guide__pb2.RouteSummary.FromString,
+        )
+    self.RouteChat = channel.stream_stream(
+        '/routeguide.RouteGuide/RouteChat',
+        request_serializer=route__guide__pb2.RouteNote.SerializeToString,
+        response_deserializer=route__guide__pb2.RouteNote.FromString,
+        )
+
+
+class RouteGuideServicer(object):
+  """Interface exported by the server.
+  """
+
+  def GetFeature(self, request, context):
+    """A simple RPC.
+
+    Obtains the feature at a given position.
+
+    A feature with an empty name is returned if there's no feature at the given
+    position.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def ListFeatures(self, request, context):
+    """A server-to-client streaming RPC.
+
+    Obtains the Features available within the given Rectangle.  Results are
+    streamed rather than returned at once (e.g. in a response message with a
+    repeated field), as the rectangle may cover a large area and contain a
+    huge number of features.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def RecordRoute(self, request_iterator, context):
+    """A client-to-server streaming RPC.
+
+    Accepts a stream of Points on a route being traversed, returning a
+    RouteSummary when traversal is completed.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def RouteChat(self, request_iterator, context):
+    """A Bidirectional streaming RPC.
+
+    Accepts a stream of RouteNotes sent while a route is being traversed,
+    while receiving other RouteNotes (e.g. from other users).
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_RouteGuideServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'GetFeature': grpc.unary_unary_rpc_method_handler(
+          servicer.GetFeature,
+          request_deserializer=route__guide__pb2.Point.FromString,
+          response_serializer=route__guide__pb2.Feature.SerializeToString,
+      ),
+      'ListFeatures': grpc.unary_stream_rpc_method_handler(
+          servicer.ListFeatures,
+          request_deserializer=route__guide__pb2.Rectangle.FromString,
+          response_serializer=route__guide__pb2.Feature.SerializeToString,
+      ),
+      'RecordRoute': grpc.stream_unary_rpc_method_handler(
+          servicer.RecordRoute,
+          request_deserializer=route__guide__pb2.Point.FromString,
+          response_serializer=route__guide__pb2.RouteSummary.SerializeToString,
+      ),
+      'RouteChat': grpc.stream_stream_rpc_method_handler(
+          servicer.RouteChat,
+          request_deserializer=route__guide__pb2.RouteNote.FromString,
+          response_serializer=route__guide__pb2.RouteNote.SerializeToString,
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'routeguide.RouteGuide', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))
diff --git a/examples/python/multiplex/run_codegen.py b/examples/python/multiplex/run_codegen.py
old mode 100755
new mode 100644
diff --git a/examples/python/route_guide/route_guide_client.py b/examples/python/route_guide/route_guide_client.py
index 8a80ed892dee70b24869ada8bec3e3220093d408..d2955231c3583e8b55439e33f13952bc4b294519 100644
--- a/examples/python/route_guide/route_guide_client.py
+++ b/examples/python/route_guide/route_guide_client.py
@@ -37,6 +37,7 @@ import time
 import grpc
 
 import route_guide_pb2
+import route_guide_pb2_grpc
 import route_guide_resources
 
 
@@ -116,7 +117,7 @@ def guide_route_chat(stub):
 
 def run():
   channel = grpc.insecure_channel('localhost:50051')
-  stub = route_guide_pb2.RouteGuideStub(channel)
+  stub = route_guide_pb2_grpc.RouteGuideStub(channel)
   print("-------------- GetFeature --------------")
   guide_get_feature(stub)
   print("-------------- ListFeatures --------------")
diff --git a/examples/python/route_guide/route_guide_pb2.py b/examples/python/route_guide/route_guide_pb2.py
index 924e186e06e4ca1094a3c648bf3748f79393464c..e6775eb8140f9eae5c7d466b1d1a88248373a4ab 100644
--- a/examples/python/route_guide/route_guide_pb2.py
+++ b/examples/python/route_guide/route_guide_pb2.py
@@ -277,240 +277,265 @@ _sym_db.RegisterMessage(RouteSummary)
 
 DESCRIPTOR.has_options = True
 DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\033io.grpc.examples.routeguideB\017RouteGuideProtoP\001\242\002\003RTG'))
-import grpc
-from grpc.beta import implementations as beta_implementations
-from grpc.beta import interfaces as beta_interfaces
-from grpc.framework.common import cardinality
-from grpc.framework.interfaces.face import utilities as face_utilities
-
-
-class RouteGuideStub(object):
-  """Interface exported by the server.
-  """
-
-  def __init__(self, channel):
-    """Constructor.
-
-    Args:
-      channel: A grpc.Channel.
+try:
+  # THESE ELEMENTS WILL BE DEPRECATED.
+  # Please use the generated *_pb2_grpc.py files instead.
+  import grpc
+  from grpc.framework.common import cardinality
+  from grpc.framework.interfaces.face import utilities as face_utilities
+  from grpc.beta import implementations as beta_implementations
+  from grpc.beta import interfaces as beta_interfaces
+
+
+  class RouteGuideStub(object):
+    """Interface exported by the server.
     """
-    self.GetFeature = channel.unary_unary(
-        '/routeguide.RouteGuide/GetFeature',
-        request_serializer=Point.SerializeToString,
-        response_deserializer=Feature.FromString,
-        )
-    self.ListFeatures = channel.unary_stream(
-        '/routeguide.RouteGuide/ListFeatures',
-        request_serializer=Rectangle.SerializeToString,
-        response_deserializer=Feature.FromString,
-        )
-    self.RecordRoute = channel.stream_unary(
-        '/routeguide.RouteGuide/RecordRoute',
-        request_serializer=Point.SerializeToString,
-        response_deserializer=RouteSummary.FromString,
-        )
-    self.RouteChat = channel.stream_stream(
-        '/routeguide.RouteGuide/RouteChat',
-        request_serializer=RouteNote.SerializeToString,
-        response_deserializer=RouteNote.FromString,
-        )
-
-
-class RouteGuideServicer(object):
-  """Interface exported by the server.
-  """
-
-  def GetFeature(self, request, context):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def ListFeatures(self, request, context):
-    """A server-to-client streaming RPC.
 
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
+    def __init__(self, channel):
+      """Constructor.
+
+      Args:
+        channel: A grpc.Channel.
+      """
+      self.GetFeature = channel.unary_unary(
+          '/routeguide.RouteGuide/GetFeature',
+          request_serializer=Point.SerializeToString,
+          response_deserializer=Feature.FromString,
+          )
+      self.ListFeatures = channel.unary_stream(
+          '/routeguide.RouteGuide/ListFeatures',
+          request_serializer=Rectangle.SerializeToString,
+          response_deserializer=Feature.FromString,
+          )
+      self.RecordRoute = channel.stream_unary(
+          '/routeguide.RouteGuide/RecordRoute',
+          request_serializer=Point.SerializeToString,
+          response_deserializer=RouteSummary.FromString,
+          )
+      self.RouteChat = channel.stream_stream(
+          '/routeguide.RouteGuide/RouteChat',
+          request_serializer=RouteNote.SerializeToString,
+          response_deserializer=RouteNote.FromString,
+          )
+
+
+  class RouteGuideServicer(object):
+    """Interface exported by the server.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def RecordRoute(self, request_iterator, context):
-    """A client-to-server streaming RPC.
 
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
+    def GetFeature(self, request, context):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def ListFeatures(self, request, context):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def RecordRoute(self, request_iterator, context):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def RouteChat(self, request_iterator, context):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+
+  def add_RouteGuideServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+        'GetFeature': grpc.unary_unary_rpc_method_handler(
+            servicer.GetFeature,
+            request_deserializer=Point.FromString,
+            response_serializer=Feature.SerializeToString,
+        ),
+        'ListFeatures': grpc.unary_stream_rpc_method_handler(
+            servicer.ListFeatures,
+            request_deserializer=Rectangle.FromString,
+            response_serializer=Feature.SerializeToString,
+        ),
+        'RecordRoute': grpc.stream_unary_rpc_method_handler(
+            servicer.RecordRoute,
+            request_deserializer=Point.FromString,
+            response_serializer=RouteSummary.SerializeToString,
+        ),
+        'RouteChat': grpc.stream_stream_rpc_method_handler(
+            servicer.RouteChat,
+            request_deserializer=RouteNote.FromString,
+            response_serializer=RouteNote.SerializeToString,
+        ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+        'routeguide.RouteGuide', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+  class BetaRouteGuideServicer(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """Interface exported by the server.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def RouteChat(self, request_iterator, context):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
-    """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-
-def add_RouteGuideServicer_to_server(servicer, server):
-  rpc_method_handlers = {
-      'GetFeature': grpc.unary_unary_rpc_method_handler(
-          servicer.GetFeature,
-          request_deserializer=Point.FromString,
-          response_serializer=Feature.SerializeToString,
-      ),
-      'ListFeatures': grpc.unary_stream_rpc_method_handler(
-          servicer.ListFeatures,
-          request_deserializer=Rectangle.FromString,
-          response_serializer=Feature.SerializeToString,
-      ),
-      'RecordRoute': grpc.stream_unary_rpc_method_handler(
-          servicer.RecordRoute,
-          request_deserializer=Point.FromString,
-          response_serializer=RouteSummary.SerializeToString,
-      ),
-      'RouteChat': grpc.stream_stream_rpc_method_handler(
-          servicer.RouteChat,
-          request_deserializer=RouteNote.FromString,
-          response_serializer=RouteNote.SerializeToString,
-      ),
-  }
-  generic_handler = grpc.method_handlers_generic_handler(
-      'routeguide.RouteGuide', rpc_method_handlers)
-  server.add_generic_rpc_handlers((generic_handler,))
-
-
-class BetaRouteGuideServicer(object):
-  """Interface exported by the server.
-  """
-  def GetFeature(self, request, context):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def ListFeatures(self, request, context):
-    """A server-to-client streaming RPC.
-
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def RecordRoute(self, request_iterator, context):
-    """A client-to-server streaming RPC.
-
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def RouteChat(self, request_iterator, context):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-
-
-class BetaRouteGuideStub(object):
-  """Interface exported by the server.
-  """
-  def GetFeature(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    raise NotImplementedError()
-  GetFeature.future = None
-  def ListFeatures(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A server-to-client streaming RPC.
-
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
-    """
-    raise NotImplementedError()
-  def RecordRoute(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A client-to-server streaming RPC.
-
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
-    """
-    raise NotImplementedError()
-  RecordRoute.future = None
-  def RouteChat(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
+    def GetFeature(self, request, context):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def ListFeatures(self, request, context):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def RecordRoute(self, request_iterator, context):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def RouteChat(self, request_iterator, context):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+
+
+  class BetaRouteGuideStub(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """Interface exported by the server.
     """
-    raise NotImplementedError()
-
-
-def beta_create_RouteGuide_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
-  request_deserializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Point.FromString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.FromString,
-    ('routeguide.RouteGuide', 'RecordRoute'): Point.FromString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
-  }
-  response_serializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Feature.SerializeToString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Feature.SerializeToString,
-    ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.SerializeToString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
-  }
-  method_implementations = {
-    ('routeguide.RouteGuide', 'GetFeature'): face_utilities.unary_unary_inline(servicer.GetFeature),
-    ('routeguide.RouteGuide', 'ListFeatures'): face_utilities.unary_stream_inline(servicer.ListFeatures),
-    ('routeguide.RouteGuide', 'RecordRoute'): face_utilities.stream_unary_inline(servicer.RecordRoute),
-    ('routeguide.RouteGuide', 'RouteChat'): face_utilities.stream_stream_inline(servicer.RouteChat),
-  }
-  server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
-  return beta_implementations.server(method_implementations, options=server_options)
-
-
-def beta_create_RouteGuide_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
-  request_serializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Point.SerializeToString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.SerializeToString,
-    ('routeguide.RouteGuide', 'RecordRoute'): Point.SerializeToString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
-  }
-  response_deserializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Feature.FromString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Feature.FromString,
-    ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.FromString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
-  }
-  cardinalities = {
-    'GetFeature': cardinality.Cardinality.UNARY_UNARY,
-    'ListFeatures': cardinality.Cardinality.UNARY_STREAM,
-    'RecordRoute': cardinality.Cardinality.STREAM_UNARY,
-    'RouteChat': cardinality.Cardinality.STREAM_STREAM,
-  }
-  stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
-  return beta_implementations.dynamic_stub(channel, 'routeguide.RouteGuide', cardinalities, options=stub_options)
+    def GetFeature(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      raise NotImplementedError()
+    GetFeature.future = None
+    def ListFeatures(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      raise NotImplementedError()
+    def RecordRoute(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      raise NotImplementedError()
+    RecordRoute.future = None
+    def RouteChat(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      raise NotImplementedError()
+
+
+  def beta_create_RouteGuide_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_deserializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Point.FromString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.FromString,
+      ('routeguide.RouteGuide', 'RecordRoute'): Point.FromString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
+    }
+    response_serializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Feature.SerializeToString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Feature.SerializeToString,
+      ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.SerializeToString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
+    }
+    method_implementations = {
+      ('routeguide.RouteGuide', 'GetFeature'): face_utilities.unary_unary_inline(servicer.GetFeature),
+      ('routeguide.RouteGuide', 'ListFeatures'): face_utilities.unary_stream_inline(servicer.ListFeatures),
+      ('routeguide.RouteGuide', 'RecordRoute'): face_utilities.stream_unary_inline(servicer.RecordRoute),
+      ('routeguide.RouteGuide', 'RouteChat'): face_utilities.stream_stream_inline(servicer.RouteChat),
+    }
+    server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+    return beta_implementations.server(method_implementations, options=server_options)
+
+
+  def beta_create_RouteGuide_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_serializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Point.SerializeToString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.SerializeToString,
+      ('routeguide.RouteGuide', 'RecordRoute'): Point.SerializeToString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
+    }
+    response_deserializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Feature.FromString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Feature.FromString,
+      ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.FromString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
+    }
+    cardinalities = {
+      'GetFeature': cardinality.Cardinality.UNARY_UNARY,
+      'ListFeatures': cardinality.Cardinality.UNARY_STREAM,
+      'RecordRoute': cardinality.Cardinality.STREAM_UNARY,
+      'RouteChat': cardinality.Cardinality.STREAM_STREAM,
+    }
+    stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
+    return beta_implementations.dynamic_stub(channel, 'routeguide.RouteGuide', cardinalities, options=stub_options)
+except ImportError:
+  pass
 # @@protoc_insertion_point(module_scope)
diff --git a/examples/python/route_guide/route_guide_pb2_grpc.py b/examples/python/route_guide/route_guide_pb2_grpc.py
new file mode 100644
index 0000000000000000000000000000000000000000..27b24c747dbd1ec383e70b71ca6230502822cb63
--- /dev/null
+++ b/examples/python/route_guide/route_guide_pb2_grpc.py
@@ -0,0 +1,114 @@
+import grpc
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+
+import route_guide_pb2 as route__guide__pb2
+
+
+class RouteGuideStub(object):
+  """Interface exported by the server.
+  """
+
+  def __init__(self, channel):
+    """Constructor.
+
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.GetFeature = channel.unary_unary(
+        '/routeguide.RouteGuide/GetFeature',
+        request_serializer=route__guide__pb2.Point.SerializeToString,
+        response_deserializer=route__guide__pb2.Feature.FromString,
+        )
+    self.ListFeatures = channel.unary_stream(
+        '/routeguide.RouteGuide/ListFeatures',
+        request_serializer=route__guide__pb2.Rectangle.SerializeToString,
+        response_deserializer=route__guide__pb2.Feature.FromString,
+        )
+    self.RecordRoute = channel.stream_unary(
+        '/routeguide.RouteGuide/RecordRoute',
+        request_serializer=route__guide__pb2.Point.SerializeToString,
+        response_deserializer=route__guide__pb2.RouteSummary.FromString,
+        )
+    self.RouteChat = channel.stream_stream(
+        '/routeguide.RouteGuide/RouteChat',
+        request_serializer=route__guide__pb2.RouteNote.SerializeToString,
+        response_deserializer=route__guide__pb2.RouteNote.FromString,
+        )
+
+
+class RouteGuideServicer(object):
+  """Interface exported by the server.
+  """
+
+  def GetFeature(self, request, context):
+    """A simple RPC.
+
+    Obtains the feature at a given position.
+
+    A feature with an empty name is returned if there's no feature at the given
+    position.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def ListFeatures(self, request, context):
+    """A server-to-client streaming RPC.
+
+    Obtains the Features available within the given Rectangle.  Results are
+    streamed rather than returned at once (e.g. in a response message with a
+    repeated field), as the rectangle may cover a large area and contain a
+    huge number of features.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def RecordRoute(self, request_iterator, context):
+    """A client-to-server streaming RPC.
+
+    Accepts a stream of Points on a route being traversed, returning a
+    RouteSummary when traversal is completed.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def RouteChat(self, request_iterator, context):
+    """A Bidirectional streaming RPC.
+
+    Accepts a stream of RouteNotes sent while a route is being traversed,
+    while receiving other RouteNotes (e.g. from other users).
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_RouteGuideServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'GetFeature': grpc.unary_unary_rpc_method_handler(
+          servicer.GetFeature,
+          request_deserializer=route__guide__pb2.Point.FromString,
+          response_serializer=route__guide__pb2.Feature.SerializeToString,
+      ),
+      'ListFeatures': grpc.unary_stream_rpc_method_handler(
+          servicer.ListFeatures,
+          request_deserializer=route__guide__pb2.Rectangle.FromString,
+          response_serializer=route__guide__pb2.Feature.SerializeToString,
+      ),
+      'RecordRoute': grpc.stream_unary_rpc_method_handler(
+          servicer.RecordRoute,
+          request_deserializer=route__guide__pb2.Point.FromString,
+          response_serializer=route__guide__pb2.RouteSummary.SerializeToString,
+      ),
+      'RouteChat': grpc.stream_stream_rpc_method_handler(
+          servicer.RouteChat,
+          request_deserializer=route__guide__pb2.RouteNote.FromString,
+          response_serializer=route__guide__pb2.RouteNote.SerializeToString,
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'routeguide.RouteGuide', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))
diff --git a/examples/python/route_guide/route_guide_server.py b/examples/python/route_guide/route_guide_server.py
index 3ffe6784768e1e0973c6540711b71df640dca0b5..bf4921793286f089f81789b08bfaf496497a274a 100644
--- a/examples/python/route_guide/route_guide_server.py
+++ b/examples/python/route_guide/route_guide_server.py
@@ -36,6 +36,7 @@ import math
 import grpc
 
 import route_guide_pb2
+import route_guide_pb2_grpc
 import route_guide_resources
 
 _ONE_DAY_IN_SECONDS = 60 * 60 * 24
@@ -68,7 +69,7 @@ def get_distance(start, end):
   R = 6371000; # metres
   return R * c;
 
-class RouteGuideServicer(route_guide_pb2.RouteGuideServicer):
+class RouteGuideServicer(route_guide_pb2_grpc.RouteGuideServicer):
   """Provides methods that implement functionality of route guide server."""
 
   def __init__(self):
@@ -125,7 +126,7 @@ class RouteGuideServicer(route_guide_pb2.RouteGuideServicer):
 
 def serve():
   server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-  route_guide_pb2.add_RouteGuideServicer_to_server(
+  route_guide_pb2_grpc.add_RouteGuideServicer_to_server(
       RouteGuideServicer(), server)
   server.add_insecure_port('[::]:50051')
   server.start()
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 04f7211d2106dd3962e6df250fd7a3eb391433d9..1eb178931dcc1cdbb9be8a90e90f82e56c165581 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -35,7 +35,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-Core'
-  version = '1.0.1'
+  version = '1.0.2'
   s.version  = version
   s.summary  = 'Core cross-platform gRPC library, written in C'
   s.homepage = 'http://www.grpc.io'
@@ -44,7 +44,9 @@ Pod::Spec.new do |s|
 
   s.source = {
     :git => 'https://github.com/grpc/grpc.git',
-    :tag => "v#{version}",
+    # TODO(mxyan): Change back to "v#{version}" for next release
+    #:tag => "v#{version}",
+    :tag => "objective-c-v#{version}",
     # TODO(jcanizales): Depend explicitly on the nanopb pod, and disable submodules.
     :submodules => true,
   }
@@ -146,6 +148,7 @@ Pod::Spec.new do |s|
                       'include/grpc/impl/codegen/atm_gcc_atomic.h',
                       'include/grpc/impl/codegen/atm_gcc_sync.h',
                       'include/grpc/impl/codegen/atm_windows.h',
+                      'include/grpc/impl/codegen/gpr_slice.h',
                       'include/grpc/impl/codegen/gpr_types.h',
                       'include/grpc/impl/codegen/port_platform.h',
                       'include/grpc/impl/codegen/slice.h',
@@ -165,6 +168,7 @@ Pod::Spec.new do |s|
                       'include/grpc/impl/codegen/byte_buffer_reader.h',
                       'include/grpc/impl/codegen/compression_types.h',
                       'include/grpc/impl/codegen/connectivity_state.h',
+                      'include/grpc/impl/codegen/exec_ctx_fwd.h',
                       'include/grpc/impl/codegen/grpc_types.h',
                       'include/grpc/impl/codegen/propagation_bits.h',
                       'include/grpc/impl/codegen/status.h',
@@ -172,6 +176,7 @@ Pod::Spec.new do |s|
                       'include/grpc/impl/codegen/atm_gcc_atomic.h',
                       'include/grpc/impl/codegen/atm_gcc_sync.h',
                       'include/grpc/impl/codegen/atm_windows.h',
+                      'include/grpc/impl/codegen/gpr_slice.h',
                       'include/grpc/impl/codegen/gpr_types.h',
                       'include/grpc/impl/codegen/port_platform.h',
                       'include/grpc/impl/codegen/slice.h',
@@ -253,6 +258,8 @@ Pod::Spec.new do |s|
                       'src/core/lib/channel/context.h',
                       'src/core/lib/channel/deadline_filter.h',
                       'src/core/lib/channel/handshaker.h',
+                      'src/core/lib/channel/handshaker_factory.h',
+                      'src/core/lib/channel/handshaker_registry.h',
                       'src/core/lib/channel/http_client_filter.h',
                       'src/core/lib/channel/http_server_filter.h',
                       'src/core/lib/channel/message_size_filter.h',
@@ -319,6 +326,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/json/json_reader.h',
                       'src/core/lib/json/json_writer.h',
                       'src/core/lib/slice/percent_encoding.h',
+                      'src/core/lib/slice/slice_internal.h',
                       'src/core/lib/slice/slice_string_helpers.h',
                       'src/core/lib/surface/api_trace.h',
                       'src/core/lib/surface/call.h',
@@ -432,6 +440,8 @@ Pod::Spec.new do |s|
                       'src/core/lib/channel/connected_channel.c',
                       'src/core/lib/channel/deadline_filter.c',
                       'src/core/lib/channel/handshaker.c',
+                      'src/core/lib/channel/handshaker_factory.c',
+                      'src/core/lib/channel/handshaker_registry.c',
                       'src/core/lib/channel/http_client_filter.c',
                       'src/core/lib/channel/http_server_filter.c',
                       'src/core/lib/channel/message_size_filter.c',
@@ -660,6 +670,8 @@ Pod::Spec.new do |s|
                               'src/core/lib/channel/context.h',
                               'src/core/lib/channel/deadline_filter.h',
                               'src/core/lib/channel/handshaker.h',
+                              'src/core/lib/channel/handshaker_factory.h',
+                              'src/core/lib/channel/handshaker_registry.h',
                               'src/core/lib/channel/http_client_filter.h',
                               'src/core/lib/channel/http_server_filter.h',
                               'src/core/lib/channel/message_size_filter.h',
@@ -726,6 +738,7 @@ Pod::Spec.new do |s|
                               'src/core/lib/json/json_reader.h',
                               'src/core/lib/json/json_writer.h',
                               'src/core/lib/slice/percent_encoding.h',
+                              'src/core/lib/slice/slice_internal.h',
                               'src/core/lib/slice/slice_string_helpers.h',
                               'src/core/lib/surface/api_trace.h',
                               'src/core/lib/surface/call.h',
diff --git a/gRPC-ProtoRPC.podspec b/gRPC-ProtoRPC.podspec
index 61d4b62d391f2b30bc8fec54cd62587fb43691a5..62eaa2aaf7ffa5bfc4475621f18d2312726077d2 100644
--- a/gRPC-ProtoRPC.podspec
+++ b/gRPC-ProtoRPC.podspec
@@ -30,7 +30,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-ProtoRPC'
-  version = '1.0.1'
+  version = '1.0.2'
   s.version  = version
   s.summary  = 'RPC library for Protocol Buffers, based on gRPC'
   s.homepage = 'http://www.grpc.io'
@@ -39,7 +39,7 @@ Pod::Spec.new do |s|
 
   s.source = {
     :git => 'https://github.com/grpc/grpc.git',
-    :tag => "v#{version}",
+    :tag => "objective-c-v#{version}",
   }
 
   s.ios.deployment_target = '7.1'
diff --git a/gRPC-RxLibrary.podspec b/gRPC-RxLibrary.podspec
index d59385c039a182f419b28a9d2fd40190585bc27d..2e8fffd2f1158d66278cf0cc6d9859c32cad7b11 100644
--- a/gRPC-RxLibrary.podspec
+++ b/gRPC-RxLibrary.podspec
@@ -30,7 +30,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-RxLibrary'
-  version = '1.0.1'
+  version = '1.0.2'
   s.version  = version
   s.summary  = 'Reactive Extensions library for iOS/OSX.'
   s.homepage = 'http://www.grpc.io'
@@ -39,7 +39,7 @@ Pod::Spec.new do |s|
 
   s.source = {
     :git => 'https://github.com/grpc/grpc.git',
-    :tag => "v#{version}",
+    :tag => "objective-c-v#{version}",
   }
 
   s.ios.deployment_target = '7.1'
diff --git a/gRPC.podspec b/gRPC.podspec
index 76410b17d28996b12b280c1ba1483e0cd5328e99..e8b770944911cd43b37cc33c65ec875151b85ef7 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -30,7 +30,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC'
-  version = '1.0.1'
+  version = '1.0.2'
   s.version  = version
   s.summary  = 'gRPC client library for iOS/OSX'
   s.homepage = 'http://www.grpc.io'
@@ -39,7 +39,7 @@ Pod::Spec.new do |s|
 
   s.source = {
     :git => 'https://github.com/grpc/grpc.git',
-    :tag => "v#{version}",
+    :tag => "objective-c-v#{version}",
   }
 
   s.ios.deployment_target = '7.1'
diff --git a/grpc.gemspec b/grpc.gemspec
index 6019b97f67224cb79d65ec40bb7dbedf66844c87..cfc0c35aa3ef75148db6fb26765fc5ec6b50f87c 100755
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
   s.require_paths = %w( src/ruby/bin src/ruby/lib src/ruby/pb )
   s.platform      = Gem::Platform::RUBY
 
-  s.add_dependency 'google-protobuf', '~> 3.0.2'
+  s.add_dependency 'google-protobuf', '~> 3.1.0'
   s.add_dependency 'googleauth',      '~> 0.5.1'
 
   s.add_development_dependency 'bundler',            '~> 1.9'
@@ -73,6 +73,7 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/codegen/atm_gcc_atomic.h )
   s.files += %w( include/grpc/impl/codegen/atm_gcc_sync.h )
   s.files += %w( include/grpc/impl/codegen/atm_windows.h )
+  s.files += %w( include/grpc/impl/codegen/gpr_slice.h )
   s.files += %w( include/grpc/impl/codegen/gpr_types.h )
   s.files += %w( include/grpc/impl/codegen/port_platform.h )
   s.files += %w( include/grpc/impl/codegen/slice.h )
@@ -148,6 +149,7 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/codegen/byte_buffer_reader.h )
   s.files += %w( include/grpc/impl/codegen/compression_types.h )
   s.files += %w( include/grpc/impl/codegen/connectivity_state.h )
+  s.files += %w( include/grpc/impl/codegen/exec_ctx_fwd.h )
   s.files += %w( include/grpc/impl/codegen/grpc_types.h )
   s.files += %w( include/grpc/impl/codegen/propagation_bits.h )
   s.files += %w( include/grpc/impl/codegen/status.h )
@@ -155,6 +157,7 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/codegen/atm_gcc_atomic.h )
   s.files += %w( include/grpc/impl/codegen/atm_gcc_sync.h )
   s.files += %w( include/grpc/impl/codegen/atm_windows.h )
+  s.files += %w( include/grpc/impl/codegen/gpr_slice.h )
   s.files += %w( include/grpc/impl/codegen/gpr_types.h )
   s.files += %w( include/grpc/impl/codegen/port_platform.h )
   s.files += %w( include/grpc/impl/codegen/slice.h )
@@ -172,6 +175,8 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/channel/context.h )
   s.files += %w( src/core/lib/channel/deadline_filter.h )
   s.files += %w( src/core/lib/channel/handshaker.h )
+  s.files += %w( src/core/lib/channel/handshaker_factory.h )
+  s.files += %w( src/core/lib/channel/handshaker_registry.h )
   s.files += %w( src/core/lib/channel/http_client_filter.h )
   s.files += %w( src/core/lib/channel/http_server_filter.h )
   s.files += %w( src/core/lib/channel/message_size_filter.h )
@@ -238,6 +243,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/json/json_reader.h )
   s.files += %w( src/core/lib/json/json_writer.h )
   s.files += %w( src/core/lib/slice/percent_encoding.h )
+  s.files += %w( src/core/lib/slice/slice_internal.h )
   s.files += %w( src/core/lib/slice/slice_string_helpers.h )
   s.files += %w( src/core/lib/surface/api_trace.h )
   s.files += %w( src/core/lib/surface/call.h )
@@ -351,6 +357,8 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/channel/connected_channel.c )
   s.files += %w( src/core/lib/channel/deadline_filter.c )
   s.files += %w( src/core/lib/channel/handshaker.c )
+  s.files += %w( src/core/lib/channel/handshaker_factory.c )
+  s.files += %w( src/core/lib/channel/handshaker_registry.c )
   s.files += %w( src/core/lib/channel/http_client_filter.c )
   s.files += %w( src/core/lib/channel/http_server_filter.c )
   s.files += %w( src/core/lib/channel/message_size_filter.c )
diff --git a/include/grpc++/grpc++.h b/include/grpc++/grpc++.h
index 36d65d6ee1eb691098d8019feecde9bc11768cba..daecfea40696600a89958bbc89cb9c206967a1c2 100644
--- a/include/grpc++/grpc++.h
+++ b/include/grpc++/grpc++.h
@@ -44,6 +44,10 @@
 /// peer, compression settings, authentication, etc.
 /// - grpc::Server, representing a gRPC server, created by grpc::ServerBuilder.
 ///
+/// Streaming calls are handled with the streaming classes in
+/// \ref sync_stream.h and
+/// \ref async_stream.h.
+///
 /// Refer to the
 /// [examples](https://github.com/grpc/grpc/blob/master/examples/cpp)
 /// for code putting these pieces into play.
diff --git a/include/grpc++/impl/codegen/completion_queue.h b/include/grpc++/impl/codegen/completion_queue.h
index 944f2c39198635d444c4c58af873925437adf459..03cecdc21c61e0c51b9fceacc38e1715b3c78c21 100644
--- a/include/grpc++/impl/codegen/completion_queue.h
+++ b/include/grpc++/impl/codegen/completion_queue.h
@@ -94,8 +94,10 @@ class ServerContext;
 
 extern CoreCodegenInterface* g_core_codegen_interface;
 
-/// A thin wrapper around \a grpc_completion_queue (see / \a
-/// src/core/surface/completion_queue.h).
+/// A thin wrapper around \ref grpc_completion_queue (see \ref
+/// src/core/lib/surface/completion_queue.h).
+/// See \ref doc/cpp/perf_notes.md for notes on best practices for high
+/// performance servers.
 class CompletionQueue : private GrpcLibraryCodegen {
  public:
   /// Default constructor. Implicitly creates a \a grpc_completion_queue
diff --git a/include/grpc++/resource_quota.h b/include/grpc++/resource_quota.h
index 75e04d4e2ffe451795a6cc32ee25c8828951a4d9..68a514658d958aeece3f560eddc3aec4e7565ad9 100644
--- a/include/grpc++/resource_quota.h
+++ b/include/grpc++/resource_quota.h
@@ -37,6 +37,7 @@
 struct grpc_resource_quota;
 
 #include <grpc++/impl/codegen/config.h>
+#include <grpc++/impl/codegen/grpc_library.h>
 
 namespace grpc {
 
@@ -44,7 +45,7 @@ namespace grpc {
 /// A ResourceQuota can be attached to a server (via ServerBuilder), or a client
 /// channel (via ChannelArguments). gRPC will attempt to keep memory used by
 /// all attached entities below the ResourceQuota bound.
-class ResourceQuota final {
+class ResourceQuota final : private GrpcLibraryCodegen {
  public:
   explicit ResourceQuota(const grpc::string& name);
   ResourceQuota();
diff --git a/include/grpc++/server_builder.h b/include/grpc++/server_builder.h
index 9252c6a63a8b9d0700ec62f01b4f3960eda84f94..2ac2f0a1ef485c2a1a6bf6184016407d73f22ac7 100644
--- a/include/grpc++/server_builder.h
+++ b/include/grpc++/server_builder.h
@@ -187,7 +187,7 @@ class ServerBuilder {
 
   struct SyncServerSettings {
     SyncServerSettings()
-        : num_cqs(GPR_MAX(gpr_cpu_num_cores(), 4)),
+        : num_cqs(1),
           min_pollers(1),
           max_pollers(INT_MAX),
           cq_timeout_msec(1000) {}
diff --git a/include/grpc++/support/channel_arguments.h b/include/grpc++/support/channel_arguments.h
index 571ab5d53054489084c3c620b5c2bb40ec5ebb87..d43f7c61bddbef307afab7f9d929e30d0b4355be 100644
--- a/include/grpc++/support/channel_arguments.h
+++ b/include/grpc++/support/channel_arguments.h
@@ -127,7 +127,7 @@ class ChannelArguments {
   /// Default pointer argument operations.
   struct PointerVtableMembers {
     static void* Copy(void* in) { return in; }
-    static void Destroy(void* in) {}
+    static void Destroy(grpc_exec_ctx* exec_ctx, void* in) {}
     static int Compare(void* a, void* b) {
       if (a < b) return -1;
       if (a > b) return 1;
diff --git a/include/grpc/grpc.h b/include/grpc/grpc.h
index 5e486215e01c5d79921ce7968ae031c7bb251a7c..898f4d533bcff5d222b805fdebe6a82ceeb4e0f2 100644
--- a/include/grpc/grpc.h
+++ b/include/grpc/grpc.h
@@ -202,9 +202,15 @@ GRPCAPI grpc_call *grpc_channel_create_registered_call(
     completion of type 'tag' to the completion queue bound to the call.
     The order of ops specified in the batch has no significance.
     Only one operation of each type can be active at once in any given
-    batch. You must call grpc_completion_queue_next or
-    grpc_completion_queue_pluck on the completion queue associated with 'call'
-    for work to be performed.
+    batch.
+    If a call to grpc_call_start_batch returns GRPC_CALL_OK you must call
+    grpc_completion_queue_next or grpc_completion_queue_pluck on the completion
+    queue associated with 'call' for work to be performed. If a call to
+    grpc_call_start_batch returns any value other than GRPC_CALL_OK it is
+    guaranteed that no state associated with 'call' is changed and it is not
+    appropriate to call grpc_completion_queue_next or
+    grpc_completion_queue_pluck consequent to the failed grpc_call_start_batch
+    call.
     THREAD SAFETY: access to grpc_call_start_batch in multi-threaded environment
     needs to be synchronized. As an optimization, you may synchronize batches
     containing just send operations independently from batches containing just
diff --git a/test/cpp/qps/limit_cores.h b/include/grpc/impl/codegen/exec_ctx_fwd.h
similarity index 73%
rename from test/cpp/qps/limit_cores.h
rename to include/grpc/impl/codegen/exec_ctx_fwd.h
index 5482904a3c42eaec190e9d1a829ef76d433b8dac..32edcedbb31d0dd0068d9fc34c7cf273aa619271 100644
--- a/test/cpp/qps/limit_cores.h
+++ b/include/grpc/impl/codegen/exec_ctx_fwd.h
@@ -31,19 +31,11 @@
  *
  */
 
-#ifndef TEST_QPS_LIMIT_CORES_H
-#define TEST_QPS_LIMIT_CORES_H
+#ifndef GRPC_IMPL_CODEGEN_EXEC_CTX_FWD_H
+#define GRPC_IMPL_CODEGEN_EXEC_CTX_FWD_H
 
-namespace grpc {
-namespace testing {
-/// LimitCores: allow this worker to only run on the cores specified in the
-/// array \a cores, which is of length \a cores_size.
-///
-/// LimitCores takes array and size arguments (instead of vector) for direct
-/// conversion from repeated field of protobuf. Use a cores_size of 0 to remove
-/// existing limits (from an empty repeated field)
-int LimitCores(const int *cores, int cores_size);
-}  // namespace testing
-}  // namespace grpc
+/* forward declaration for exec_ctx.h */
+struct grpc_exec_ctx;
+typedef struct grpc_exec_ctx grpc_exec_ctx;
 
-#endif  // TEST_QPS_LIMIT_CORES_H
+#endif /* GRPC_IMPL_CODEGEN_EXEC_CTX_FWD_H */
diff --git a/include/grpc/impl/codegen/gpr_slice.h b/include/grpc/impl/codegen/gpr_slice.h
new file mode 100644
index 0000000000000000000000000000000000000000..c62e976b8f4ff7d9545dbe6d051b7595ddaad634
--- /dev/null
+++ b/include/grpc/impl/codegen/gpr_slice.h
@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef GRPC_IMPL_CODEGEN_GPR_SLICE_H
+#define GRPC_IMPL_CODEGEN_GPR_SLICE_H
+
+/* WARNING: Please do not use this header. This was added as a temporary measure
+ * to not break some of the external projects that depend on gpr_slice_*
+ * functions. We are actively working on moving all the gpr_slice_* references
+ * to grpc_slice_* and this file will be removed
+ * */
+
+/* TODO (sreek) - Allowed by default but will be very soon turned off */
+#define GRPC_ALLOW_GPR_SLICE_FUNCTIONS 1
+
+#ifdef GRPC_ALLOW_GPR_SLICE_FUNCTIONS
+
+#define gpr_slice_refcount grpc_slice_refcount
+#define gpr_slice grpc_slice
+#define gpr_slice_buffer grpc_slice_buffer
+
+#define gpr_slice_ref grpc_slice_ref
+#define gpr_slice_unref grpc_slice_unref
+#define gpr_slice_new grpc_slice_new
+#define gpr_slice_new_with_user_data grpc_slice_new_with_user_data
+#define gpr_slice_new_with_len grpc_slice_new_with_len
+#define gpr_slice_malloc grpc_slice_malloc
+#define gpr_slice_from_copied_string grpc_slice_from_copied_string
+#define gpr_slice_from_copied_buffer grpc_slice_from_copied_buffer
+#define gpr_slice_from_static_string grpc_slice_from_static_string
+#define gpr_slice_sub grpc_slice_sub
+#define gpr_slice_sub_no_ref grpc_slice_sub_no_ref
+#define gpr_slice_split_tail grpc_slice_split_tail
+#define gpr_slice_split_head grpc_slice_split_head
+#define gpr_slice_cmp grpc_slice_cmp
+#define gpr_slice_str_cmp grpc_slice_str_cmp
+
+#define gpr_slice_buffer grpc_slice_buffer
+#define gpr_slice_buffer_init grpc_slice_buffer_init
+#define gpr_slice_buffer_destroy grpc_slice_buffer_destroy
+#define gpr_slice_buffer_add grpc_slice_buffer_add
+#define gpr_slice_buffer_add_indexed grpc_slice_buffer_add_indexed
+#define gpr_slice_buffer_addn grpc_slice_buffer_addn
+#define gpr_slice_buffer_tiny_add grpc_slice_buffer_tiny_add
+#define gpr_slice_buffer_pop grpc_slice_buffer_pop
+#define gpr_slice_buffer_reset_and_unref grpc_slice_buffer_reset_and_unref
+#define gpr_slice_buffer_swap grpc_slice_buffer_swap
+#define gpr_slice_buffer_move_into grpc_slice_buffer_move_into
+#define gpr_slice_buffer_trim_end grpc_slice_buffer_trim_end
+#define gpr_slice_buffer_move_first grpc_slice_buffer_move_first
+#define gpr_slice_buffer_take_first grpc_slice_buffer_take_first
+
+#endif /* GRPC_ALLOW_GPR_SLICE_FUNCTIONS */
+
+#endif /* GRPC_IMPL_CODEGEN_GPR_SLICE_H */
diff --git a/include/grpc/impl/codegen/grpc_types.h b/include/grpc/impl/codegen/grpc_types.h
index da1bd9dcbf0415463f2b5b8168fc1e48f6998866..ee8101aab8d90914f7150d946c8e695eea284e82 100644
--- a/include/grpc/impl/codegen/grpc_types.h
+++ b/include/grpc/impl/codegen/grpc_types.h
@@ -34,10 +34,10 @@
 #ifndef GRPC_IMPL_CODEGEN_GRPC_TYPES_H
 #define GRPC_IMPL_CODEGEN_GRPC_TYPES_H
 
+#include <grpc/impl/codegen/compression_types.h>
+#include <grpc/impl/codegen/exec_ctx_fwd.h>
 #include <grpc/impl/codegen/gpr_types.h>
 #include <grpc/impl/codegen/slice.h>
-
-#include <grpc/impl/codegen/compression_types.h>
 #include <grpc/impl/codegen/status.h>
 
 #include <stddef.h>
@@ -96,7 +96,7 @@ typedef enum {
 
 typedef struct grpc_arg_pointer_vtable {
   void *(*copy)(void *p);
-  void (*destroy)(void *p);
+  void (*destroy)(grpc_exec_ctx *exec_ctx, void *p);
   int (*cmp)(void *p, void *q);
 } grpc_arg_pointer_vtable;
 
@@ -179,6 +179,9 @@ typedef struct {
     Larger values give lower CPU usage for large messages, but more head of line
     blocking for small messages. */
 #define GRPC_ARG_HTTP2_MAX_FRAME_SIZE "grpc.http2.max_frame_size"
+/** How much data are we willing to queue up per stream if
+    GRPC_WRITE_BUFFER_HINT is set? This is an upper bound */
+#define GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE "grpc.http2.write_buffer_size"
 /** Default authority to pass if none specified on call construction. A string.
  * */
 #define GRPC_ARG_DEFAULT_AUTHORITY "grpc.default_authority"
@@ -206,18 +209,12 @@ typedef struct {
 /** If non-zero, allow the use of SO_REUSEPORT if it's available (default 1) */
 #define GRPC_ARG_ALLOW_REUSEPORT "grpc.so_reuseport"
 /** If non-zero, a pointer to a buffer pool (use grpc_resource_quota_arg_vtable
-   to fetch an appropriate pointer arg vtable */
+   to fetch an appropriate pointer arg vtable) */
 #define GRPC_ARG_RESOURCE_QUOTA "grpc.resource_quota"
-/** Service config data, to be passed to subchannels.
-    Not intended for external use. */
+/** Service config data in JSON form. Not intended for use outside of tests. */
 #define GRPC_ARG_SERVICE_CONFIG "grpc.service_config"
 /** LB policy name. */
 #define GRPC_ARG_LB_POLICY_NAME "grpc.lb_policy_name"
-/** Server name. Not intended for external use. */
-#define GRPC_ARG_SERVER_NAME "grpc.server_name"
-/** Resolved addresses in a form used by the LB policy.
-    Not intended for external use. */
-#define GRPC_ARG_LB_ADDRESSES "grpc.lb_addresses"
 /** The grpc_socket_mutator instance that set the socket options. A pointer. */
 #define GRPC_ARG_SOCKET_MUTATOR "grpc.socket_mutator"
 /** \} */
diff --git a/include/grpc/impl/codegen/port_platform.h b/include/grpc/impl/codegen/port_platform.h
index cd989d664ca0c7bbb219a79879fb7ca307336c72..4633fa12e84767d836b53b245024387759579992 100644
--- a/include/grpc/impl/codegen/port_platform.h
+++ b/include/grpc/impl/codegen/port_platform.h
@@ -361,7 +361,7 @@ typedef unsigned __int64 uint64_t;
 #define GPR_MAX_ALIGNMENT 16
 
 #ifndef GRPC_MUST_USE_RESULT
-#ifdef __GNUC__
+#if defined(__GNUC__) && !defined(__MINGW32__)
 #define GRPC_MUST_USE_RESULT __attribute__((warn_unused_result))
 #else
 #define GRPC_MUST_USE_RESULT
diff --git a/include/grpc/impl/codegen/slice.h b/include/grpc/impl/codegen/slice.h
index 774ba0e95d49f5ea0fbad74f9ca9b9a845d264a9..00781bb76bdb8cc936607d2fabb838778eea2ca5 100644
--- a/include/grpc/impl/codegen/slice.h
+++ b/include/grpc/impl/codegen/slice.h
@@ -37,6 +37,9 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <grpc/impl/codegen/exec_ctx_fwd.h>
+#include <grpc/impl/codegen/gpr_slice.h>
+
 /* Slice API
 
    A slice represents a contiguous reference counted array of bytes.
@@ -57,7 +60,7 @@
    grpc_slice_new, or grpc_slice_new_with_len instead. */
 typedef struct grpc_slice_refcount {
   void (*ref)(void *);
-  void (*unref)(void *);
+  void (*unref)(grpc_exec_ctx *exec_ctx, void *);
 } grpc_slice_refcount;
 
 #define GRPC_SLICE_INLINED_SIZE (sizeof(size_t) + sizeof(uint8_t *) - 1)
@@ -115,4 +118,22 @@ typedef struct {
   GRPC_SLICE_START_PTR(slice) + GRPC_SLICE_LENGTH(slice)
 #define GRPC_SLICE_IS_EMPTY(slice) (GRPC_SLICE_LENGTH(slice) == 0)
 
+#ifdef GRPC_ALLOW_GPR_SLICE_FUNCTIONS
+
+/* Duplicate GPR_* definitions */
+#define GPR_SLICE_START_PTR(slice)                  \
+  ((slice).refcount ? (slice).data.refcounted.bytes \
+                    : (slice).data.inlined.bytes)
+#define GPR_SLICE_LENGTH(slice)                      \
+  ((slice).refcount ? (slice).data.refcounted.length \
+                    : (slice).data.inlined.length)
+#define GPR_SLICE_SET_LENGTH(slice, newlen)                               \
+  ((slice).refcount ? ((slice).data.refcounted.length = (size_t)(newlen)) \
+                    : ((slice).data.inlined.length = (uint8_t)(newlen)))
+#define GPR_SLICE_END_PTR(slice) \
+  GRPC_SLICE_START_PTR(slice) + GRPC_SLICE_LENGTH(slice)
+#define GPR_SLICE_IS_EMPTY(slice) (GRPC_SLICE_LENGTH(slice) == 0)
+
+#endif /* GRPC_ALLOW_GPR_SLICE_FUNCTIONS */
+
 #endif /* GRPC_IMPL_CODEGEN_SLICE_H */
diff --git a/include/grpc/support/log_windows.h b/include/grpc/support/log_windows.h
index 12bf8cc1f5ecea5c1d88e8ce60906c34ad51c9f2..943a8e908b3eea1a4d121d148e30eec041303a3f 100644
--- a/include/grpc/support/log_windows.h
+++ b/include/grpc/support/log_windows.h
@@ -34,6 +34,8 @@
 #ifndef GRPC_SUPPORT_LOG_WINDOWS_H
 #define GRPC_SUPPORT_LOG_WINDOWS_H
 
+#include <grpc/impl/codegen/port_platform.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/package.json b/package.json
index 5506e9bbdf8deaba326801fb5c635bae7608ea71..375db74849f8f047278a5d7597ce5b89f200ae29 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
   "scripts": {
     "lint": "node ./node_modules/jshint/bin/jshint src/node/src src/node/test src/node/interop src/node/index.js --exclude-path=src/node/.jshintignore",
     "test": "./node_modules/.bin/mocha src/node/test && npm run-script lint",
+    "electron-build": "./node_modules/.bin/node-pre-gyp configure build --runtime=electron --disturl=https://atom.io/download/atom-shell",
     "gen_docs": "./node_modules/.bin/jsdoc -c src/node/jsdoc_conf.json",
     "coverage": "./node_modules/.bin/istanbul cover ./node_modules/.bin/_mocha src/node/test",
     "install": "./node_modules/.bin/node-pre-gyp install --fallback-to-build"
@@ -38,6 +39,7 @@
   "devDependencies": {
     "async": "^2.0.1",
     "body-parser": "^1.15.2",
+    "electron-mocha": "^3.1.1",
     "express": "^4.14.0",
     "google-auth-library": "^0.9.2",
     "google-protobuf": "^3.0.0",
@@ -50,7 +52,7 @@
     "poisson-process": "^0.2.1"
   },
   "engines": {
-    "node": ">=0.12.0"
+    "node": ">=1.1.0"
   },
   "binary": {
     "module_name": "grpc_node",
diff --git a/package.xml b/package.xml
index 61668815a68bfdb5aede04465bb32843735557fc..aa1894f4086b1c1ef27f70eba8553fa5fa2f8147 100644
--- a/package.xml
+++ b/package.xml
@@ -10,19 +10,20 @@
   <email>grpc-packages@google.com</email>
   <active>yes</active>
  </lead>
- <date>2016-08-22</date>
+ <date>2017-01-13</date>
  <time>16:06:07</time>
  <version>
   <release>1.1.0dev</release>
   <api>1.1.0dev</api>
  </version>
  <stability>
-  <release>stable</release>
-  <api>stable</api>
+  <release>beta</release>
+  <api>beta</api>
  </stability>
  <license>BSD</license>
  <notes>
-- Reject metadata keys which are not legal #7881
+- PHP Proto3 adoption #8179
+- Various bug fixes     
  </notes>
  <contents>
   <dir baseinstalldir="/" name="/">
@@ -81,6 +82,7 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_atomic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_sync.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_windows.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_slice.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/port_platform.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/slice.h" role="src" />
@@ -156,6 +158,7 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/byte_buffer_reader.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/compression_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/connectivity_state.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/impl/codegen/exec_ctx_fwd.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/grpc_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/propagation_bits.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/status.h" role="src" />
@@ -163,6 +166,7 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_atomic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_sync.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_windows.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_slice.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/port_platform.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/slice.h" role="src" />
@@ -180,6 +184,8 @@
     <file baseinstalldir="/" name="src/core/lib/channel/context.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/deadline_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/handshaker.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/channel/handshaker_factory.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/channel/handshaker_registry.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_client_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_server_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/message_size_filter.h" role="src" />
@@ -246,6 +252,7 @@
     <file baseinstalldir="/" name="src/core/lib/json/json_reader.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/json/json_writer.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/percent_encoding.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/slice/slice_internal.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/slice_string_helpers.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/api_trace.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/call.h" role="src" />
@@ -359,6 +366,8 @@
     <file baseinstalldir="/" name="src/core/lib/channel/connected_channel.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/deadline_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/handshaker.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/channel/handshaker_factory.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/channel/handshaker_registry.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_client_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_server_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/message_size_filter.c" role="src" />
@@ -1209,18 +1218,49 @@ Update to wrap gRPC C Core version 0.10.0
   </release>
   <release>
    <version>
-    <release>1.1.0dev</release>
-    <api>1.1.0dev</api>
+    <release>1.0.1RC1</release>
+    <api>1.0.1RC1</api>
+   </version>
+   <stability>
+    <release>beta</release>
+    <api>beta</api>
+   </stability>
+   <date>2016-10-06</date>
+   <license>BSD</license>
+   <notes>
+- Reject metadata keys which are not legal #7881
+   </notes>
+  </release>
+  <release>
+   <version>
+    <release>1.0.1</release>
+    <api>1.0.1</api>
    </version>
    <stability>
     <release>stable</release>
     <api>stable</api>
    </stability>
-   <date>2016-08-22</date>
+   <date>2016-10-27</date>
    <license>BSD</license>
    <notes>
 - Reject metadata keys which are not legal #7881
    </notes>
   </release>
+  <release>
+   <version>
+    <release>1.1.0dev</release>
+    <api>1.1.0dev</api>
+   </version>
+   <stability>
+    <release>beta</release>
+    <api>beta</api>
+   </stability>
+   <date>2017-01-13</date>
+   <license>BSD</license>
+   <notes>
+- PHP Proto3 adoption #8179
+- Various bug fixes     
+   </notes>
+  </release>
  </changelog>
 </package>
diff --git a/setup.cfg b/setup.cfg
index dd9161ca8b90a2ee9622d62d23e7d3c956a01660..218792e674c07575cc97c75245e60d4c99b6a7ca 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -11,3 +11,7 @@ inplace=1
 
 [build_package_protos]
 exclude=.*protoc_plugin/protoc_plugin_test\.proto$
+
+# Style settings
+[yapf]
+based_on_style = google
diff --git a/setup.py b/setup.py
index 559a75f674257e387c89621e9efb159bb84fe4f2..ab217433a3b0d37c89e5284ed0d7dd970869f87c 100644
--- a/setup.py
+++ b/setup.py
@@ -218,15 +218,18 @@ SETUP_REQUIRES = INSTALL_REQUIRES + (
     'six>=1.10',
   ) if ENABLE_DOCUMENTATION_BUILD else ()
 
-if BUILD_WITH_CYTHON:
-  sys.stderr.write(
-    "You requested a Cython build via GRPC_PYTHON_BUILD_WITH_CYTHON, "
-    "but do not have Cython installed. We won't stop you from using "
-    "other commands, but the extension files will fail to build.\n")
-elif need_cython:
-  sys.stderr.write(
-      'We could not find Cython. Setup may take 10-20 minutes.\n')
-  SETUP_REQUIRES += ('cython>=0.23',)
+try:
+  import Cython
+except ImportError:
+  if BUILD_WITH_CYTHON:
+    sys.stderr.write(
+      "You requested a Cython build via GRPC_PYTHON_BUILD_WITH_CYTHON, "
+      "but do not have Cython installed. We won't stop you from using "
+      "other commands, but the extension files will fail to build.\n")
+  elif need_cython:
+    sys.stderr.write(
+        'We could not find Cython. Setup may take 10-20 minutes.\n')
+    SETUP_REQUIRES += ('cython>=0.23',)
 
 COMMAND_CLASS = {
     'doc': commands.SphinxDocumentation,
diff --git a/src/compiler/csharp_generator.cc b/src/compiler/csharp_generator.cc
index a3af258d9c36b20bd1e36c21538cd48618046660..cc7a7a96aeab5c31256a2891c362d91446fb8d96 100644
--- a/src/compiler/csharp_generator.cc
+++ b/src/compiler/csharp_generator.cc
@@ -68,13 +68,13 @@ namespace {
 // Currently, we cannot easily reuse the functionality as
 // google/protobuf/compiler/csharp/csharp_doc_comment.h is not a public header.
 // TODO(jtattermusch): reuse the functionality from google/protobuf.
-void GenerateDocCommentBodyImpl(grpc::protobuf::io::Printer *printer,
+bool GenerateDocCommentBodyImpl(grpc::protobuf::io::Printer *printer,
                                 grpc::protobuf::SourceLocation location) {
   grpc::string comments = location.leading_comments.empty()
                               ? location.trailing_comments
                               : location.leading_comments;
   if (comments.empty()) {
-    return;
+    return false;
   }
   // XML escaping... no need for apostrophes etc as the whole text is going to
   // be a child
@@ -107,18 +107,84 @@ void GenerateDocCommentBodyImpl(grpc::protobuf::io::Printer *printer,
         printer->Print("///\n");
       }
       last_was_empty = false;
-      printer->Print("/// $line$\n", "line", *it);
+      printer->Print("///$line$\n", "line", *it);
     }
   }
   printer->Print("/// </summary>\n");
+  return true;
 }
 
 template <typename DescriptorType>
-void GenerateDocCommentBody(grpc::protobuf::io::Printer *printer,
+bool GenerateDocCommentBody(grpc::protobuf::io::Printer *printer,
                             const DescriptorType *descriptor) {
   grpc::protobuf::SourceLocation location;
-  if (descriptor->GetSourceLocation(&location)) {
-    GenerateDocCommentBodyImpl(printer, location);
+  if (!descriptor->GetSourceLocation(&location)) {
+    return false;
+  }
+  return GenerateDocCommentBodyImpl(printer, location);
+}
+
+void GenerateDocCommentServerMethod(grpc::protobuf::io::Printer *printer,
+                                    const MethodDescriptor *method) {
+  if (GenerateDocCommentBody(printer, method)) {
+    if (method->client_streaming()) {
+      printer->Print(
+          "/// <param name=\"requestStream\">Used for reading requests from "
+          "the client.</param>\n");
+    } else {
+      printer->Print(
+          "/// <param name=\"request\">The request received from the "
+          "client.</param>\n");
+    }
+    if (method->server_streaming()) {
+      printer->Print(
+          "/// <param name=\"responseStream\">Used for sending responses back "
+          "to the client.</param>\n");
+    }
+    printer->Print(
+        "/// <param name=\"context\">The context of the server-side call "
+        "handler being invoked.</param>\n");
+    if (method->server_streaming()) {
+      printer->Print(
+          "/// <returns>A task indicating completion of the "
+          "handler.</returns>\n");
+    } else {
+      printer->Print(
+          "/// <returns>The response to send back to the client (wrapped by a "
+          "task).</returns>\n");
+    }
+  }
+}
+
+void GenerateDocCommentClientMethod(grpc::protobuf::io::Printer *printer,
+                                    const MethodDescriptor *method,
+                                    bool is_sync, bool use_call_options) {
+  if (GenerateDocCommentBody(printer, method)) {
+    if (!method->client_streaming()) {
+      printer->Print(
+          "/// <param name=\"request\">The request to send to the "
+          "server.</param>\n");
+    }
+    if (!use_call_options) {
+      printer->Print(
+          "/// <param name=\"headers\">The initial metadata to send with the "
+          "call. This parameter is optional.</param>\n");
+      printer->Print(
+          "/// <param name=\"deadline\">An optional deadline for the call. The "
+          "call will be cancelled if deadline is hit.</param>\n");
+      printer->Print(
+          "/// <param name=\"cancellationToken\">An optional token for "
+          "canceling the call.</param>\n");
+    } else {
+      printer->Print(
+          "/// <param name=\"options\">The options for the call.</param>\n");
+    }
+    if (is_sync) {
+      printer->Print(
+          "/// <returns>The response received from the server.</returns>\n");
+    } else {
+      printer->Print("/// <returns>The call object.</returns>\n");
+    }
   }
 }
 
@@ -319,7 +385,7 @@ void GenerateServerClass(Printer *out, const ServiceDescriptor *service) {
   out->Indent();
   for (int i = 0; i < service->method_count(); i++) {
     const MethodDescriptor *method = service->method(i);
-    GenerateDocCommentBody(out, method);
+    GenerateDocCommentServerMethod(out, method);
     out->Print(
         "public virtual $returntype$ "
         "$methodname$($request$$response_stream_maybe$, "
@@ -393,7 +459,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
 
     if (method_type == METHODTYPE_NO_STREAMING) {
       // unary calls have an extra synchronous stub method
-      GenerateDocCommentBody(out, method);
+      GenerateDocCommentClientMethod(out, method, true, false);
       out->Print(
           "public virtual $response$ $methodname$($request$ request, Metadata "
           "headers = null, DateTime? deadline = null, CancellationToken "
@@ -411,7 +477,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
       out->Print("}\n");
 
       // overload taking CallOptions as a param
-      GenerateDocCommentBody(out, method);
+      GenerateDocCommentClientMethod(out, method, true, true);
       out->Print(
           "public virtual $response$ $methodname$($request$ request, "
           "CallOptions options)\n",
@@ -432,7 +498,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
     if (method_type == METHODTYPE_NO_STREAMING) {
       method_name += "Async";  // prevent name clash with synchronous method.
     }
-    GenerateDocCommentBody(out, method);
+    GenerateDocCommentClientMethod(out, method, false, false);
     out->Print(
         "public virtual $returntype$ $methodname$($request_maybe$Metadata "
         "headers = null, DateTime? deadline = null, CancellationToken "
@@ -452,7 +518,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
     out->Print("}\n");
 
     // overload taking CallOptions as a param
-    GenerateDocCommentBody(out, method);
+    GenerateDocCommentClientMethod(out, method, false, true);
     out->Print(
         "public virtual $returntype$ $methodname$($request_maybe$CallOptions "
         "options)\n",
@@ -517,6 +583,9 @@ void GenerateBindServiceMethod(Printer *out, const ServiceDescriptor *service) {
   out->Print(
       "/// <summary>Creates service definition that can be registered with a "
       "server</summary>\n");
+  out->Print(
+      "/// <param name=\"serviceImpl\">An object implementing the server-side"
+      " handling logic.</param>\n");
   out->Print(
       "public static ServerServiceDefinition BindService($implclass$ "
       "serviceImpl)\n",
diff --git a/src/compiler/python_generator.cc b/src/compiler/python_generator.cc
index b0a60092ab1549d19343fcda31580139f56e8035..4841da8da8e8529f85966081e9d193b1b8bc2451 100644
--- a/src/compiler/python_generator.cc
+++ b/src/compiler/python_generator.cc
@@ -40,6 +40,7 @@
 #include <map>
 #include <memory>
 #include <ostream>
+#include <set>
 #include <sstream>
 #include <tuple>
 #include <vector>
@@ -64,7 +65,9 @@ using std::make_pair;
 using std::map;
 using std::pair;
 using std::replace;
+using std::tuple;
 using std::vector;
+using std::set;
 
 namespace grpc_python_generator {
 
@@ -73,6 +76,8 @@ namespace {
 typedef vector<const Descriptor*> DescriptorVector;
 typedef map<grpc::string, grpc::string> StringMap;
 typedef vector<grpc::string> StringVector;
+typedef tuple<grpc::string, grpc::string> StringPair;
+typedef set<StringPair> StringPairSet;
 
 // Provides RAII indentation handling. Use as:
 // {
@@ -651,6 +656,7 @@ bool PrivateGenerator::PrintPreamble() {
       "face_utilities\n");
   if (generate_in_pb2_grpc) {
     out->Print("\n");
+    StringPairSet imports_set;
     for (int i = 0; i < file->service_count(); ++i) {
       const ServiceDescriptor* service = file->service(i);
       for (int j = 0; j < service->method_count(); ++j) {
@@ -662,11 +668,15 @@ bool PrivateGenerator::PrintPreamble() {
           grpc::string type_file_name = type->file()->name();
           grpc::string module_name = ModuleName(type_file_name);
           grpc::string module_alias = ModuleAlias(type_file_name);
-          out->Print("import $ModuleName$ as $ModuleAlias$\n", "ModuleName",
-                     module_name, "ModuleAlias", module_alias);
+          imports_set.insert(std::make_tuple(module_name, module_alias));
         }
       }
     }
+    for (StringPairSet::iterator it = imports_set.begin();
+         it != imports_set.end(); ++it) {
+      out->Print("import $ModuleName$ as $ModuleAlias$\n", "ModuleName",
+                 std::get<0>(*it), "ModuleAlias", std::get<1>(*it));
+    }
   }
   return true;
 }
@@ -714,6 +724,9 @@ pair<bool, grpc::string> PrivateGenerator::GetGrpcServices() {
     out = &out_printer;
 
     if (generate_in_pb2_grpc) {
+      out->Print(
+          "# Generated by the gRPC Python protocol compiler plugin. "
+          "DO NOT EDIT!\n");
       if (!PrintPreamble()) {
         return make_pair(false, "");
       }
diff --git a/src/core/ext/README.md b/src/core/ext/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..0812b20823c55edd47657e8e37356097ec4c37ce
--- /dev/null
+++ b/src/core/ext/README.md
@@ -0,0 +1,5 @@
+Optional plugins for gRPC Core: Modules in this directory extend gRPC Core in
+useful ways. All optional code belongs here.
+
+NOTE: The movement of code between lib and ext is an ongoing effort, so this
+directory currently contains too much of the core library.
diff --git a/src/core/ext/census/grpc_filter.c b/src/core/ext/census/grpc_filter.c
index 397dbc40a871fa5b24bd984cf5223a38f481960b..8e4d4732b828de056b11c23ed2af9e7c7603a7b7 100644
--- a/src/core/ext/census/grpc_filter.c
+++ b/src/core/ext/census/grpc_filter.c
@@ -154,7 +154,8 @@ static grpc_error *server_init_call_elem(grpc_exec_ctx *exec_ctx,
   memset(d, 0, sizeof(*d));
   d->start_ts = args->start_time;
   /* TODO(hongyu): call census_tracing_start_op here. */
-  grpc_closure_init(&d->finish_recv, server_on_done_recv, elem);
+  grpc_closure_init(&d->finish_recv, server_on_done_recv, elem,
+                    grpc_schedule_on_exec_ctx);
   return GRPC_ERROR_NONE;
 }
 
@@ -167,11 +168,12 @@ static void server_destroy_call_elem(grpc_exec_ctx *exec_ctx,
   /* TODO(hongyu): record rpc server stats and census_tracing_end_op here */
 }
 
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   channel_data *chand = elem->channel_data;
   GPR_ASSERT(chand != NULL);
+  return GRPC_ERROR_NONE;
 }
 
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/ext/census/grpc_plugin.c b/src/core/ext/census/grpc_plugin.c
index e43ceafd0c9483bcf1b09618a78d4fc2ff23c491..c9fe453af867e533d6c925a9d6fa1ec3eaae1fee 100644
--- a/src/core/ext/census/grpc_plugin.c
+++ b/src/core/ext/census/grpc_plugin.c
@@ -51,7 +51,8 @@ static bool is_census_enabled(const grpc_channel_args *a) {
   return census_enabled();
 }
 
-static bool maybe_add_census_filter(grpc_channel_stack_builder *builder,
+static bool maybe_add_census_filter(grpc_exec_ctx *exec_ctx,
+                                    grpc_channel_stack_builder *builder,
                                     void *arg) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);
diff --git a/src/core/ext/census/tracing.c b/src/core/ext/census/tracing.c
index 8f0e12296ddc13b7b7a8608f7efe462f26744fe0..9371fffc8d75392984bdbbdd194e4b82bee79716 100644
--- a/src/core/ext/census/tracing.c
+++ b/src/core/ext/census/tracing.c
@@ -34,16 +34,18 @@
 //#include "src/core/ext/census/tracing.h"
 
 #include <grpc/census.h>
+#include <stdlib.h>
 
 /* TODO(aveitch): These are all placeholder implementations. */
 
-// int census_trace_mask(const census_context *context) {
-//   return CENSUS_TRACE_MASK_NONE;
-// }
+int census_trace_mask(const census_context *context) {
+  abort();
+  return CENSUS_TRACE_MASK_NONE;
+}
 
-// void census_set_trace_mask(int trace_mask) {}
+void census_set_trace_mask(int trace_mask) { abort(); }
 
-// void census_trace_print(census_context *context, uint32_t type,
-//                         const char *buffer, size_t n) {}
-
-// void SetTracerParams(const Params& params);
+void census_trace_print(census_context *context, uint32_t type,
+                        const char *buffer, size_t n) {
+  abort();
+}
diff --git a/src/core/ext/client_channel/channel_connectivity.c b/src/core/ext/client_channel/channel_connectivity.c
index 9797e665643b24aa9e1b67d343cbdbaf30233588..dd70bc2c6c8997b075514f9641b37fa151daa6c1 100644
--- a/src/core/ext/client_channel/channel_connectivity.c
+++ b/src/core/ext/client_channel/channel_connectivity.c
@@ -76,6 +76,7 @@ typedef struct {
   gpr_mu mu;
   callback_phase phase;
   grpc_closure on_complete;
+  grpc_closure on_timeout;
   grpc_timer alarm;
   grpc_connectivity_state state;
   grpc_completion_queue *cq;
@@ -198,7 +199,10 @@ void grpc_channel_watch_connectivity_state(
   grpc_cq_begin_op(cq, tag);
 
   gpr_mu_init(&w->mu);
-  grpc_closure_init(&w->on_complete, watch_complete, w);
+  grpc_closure_init(&w->on_complete, watch_complete, w,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&w->on_timeout, timeout_complete, w,
+                    grpc_schedule_on_exec_ctx);
   w->phase = WAITING;
   w->state = last_observed_state;
   w->cq = cq;
@@ -207,7 +211,7 @@ void grpc_channel_watch_connectivity_state(
 
   grpc_timer_init(&exec_ctx, &w->alarm,
                   gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
-                  timeout_complete, w, gpr_now(GPR_CLOCK_MONOTONIC));
+                  &w->on_timeout, gpr_now(GPR_CLOCK_MONOTONIC));
 
   if (client_channel_elem->filter == &grpc_client_channel_filter) {
     GRPC_CHANNEL_INTERNAL_REF(channel, "watch_channel_connectivity");
diff --git a/src/core/ext/client_channel/client_channel.c b/src/core/ext/client_channel/client_channel.c
index 1fcff4388a55b582fea7549ae92f20cf90c6d6ec..2f25fef9a741bd44e3a51f1b81087836de304a5f 100644
--- a/src/core/ext/client_channel/client_channel.c
+++ b/src/core/ext/client_channel/client_channel.c
@@ -44,6 +44,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/ext/client_channel/lb_policy_registry.h"
+#include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/client_channel/subchannel.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
@@ -82,8 +83,12 @@ static void *method_parameters_copy(void *value) {
   return new_value;
 }
 
+static void method_parameters_free(grpc_exec_ctx *exec_ctx, void *p) {
+  gpr_free(p);
+}
+
 static const grpc_mdstr_hash_table_vtable method_parameters_vtable = {
-    gpr_free, method_parameters_copy};
+    method_parameters_free, method_parameters_copy};
 
 static void *method_parameters_create_from_json(const grpc_json *json) {
   wait_for_ready_value wait_for_ready = WAIT_FOR_READY_UNSET;
@@ -248,7 +253,8 @@ static void watch_lb_policy(grpc_exec_ctx *exec_ctx, channel_data *chand,
   GRPC_CHANNEL_STACK_REF(chand->owning_stack, "watch_lb_policy");
 
   w->chand = chand;
-  grpc_closure_init(&w->on_changed, on_lb_policy_state_changed, w);
+  grpc_closure_init(&w->on_changed, on_lb_policy_state_changed, w,
+                    grpc_schedule_on_exec_ctx);
   w->state = current_state;
   w->lb_policy = lb_policy;
   grpc_lb_policy_notify_on_state_change(exec_ctx, lb_policy, &w->state,
@@ -326,7 +332,7 @@ static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
           grpc_service_config_create(service_config_json);
       if (service_config != NULL) {
         method_params_table = grpc_service_config_create_method_config_table(
-            service_config, method_parameters_create_from_json,
+            exec_ctx, service_config, method_parameters_create_from_json,
             &method_parameters_vtable);
         grpc_service_config_destroy(service_config);
       }
@@ -335,7 +341,7 @@ static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
     // be pointing to data inside chand->resolver_result.
     // The copy will be saved in chand->lb_policy_name below.
     lb_policy_name = gpr_strdup(lb_policy_name);
-    grpc_channel_args_destroy(chand->resolver_result);
+    grpc_channel_args_destroy(exec_ctx, chand->resolver_result);
     chand->resolver_result = NULL;
   }
 
@@ -356,18 +362,16 @@ static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
     chand->service_config_json = service_config_json;
   }
   if (chand->method_params_table != NULL) {
-    grpc_mdstr_hash_table_unref(chand->method_params_table);
+    grpc_mdstr_hash_table_unref(exec_ctx, chand->method_params_table);
   }
   chand->method_params_table = method_params_table;
   if (lb_policy != NULL) {
-    grpc_exec_ctx_enqueue_list(exec_ctx, &chand->waiting_for_config_closures,
-                               NULL);
+    grpc_closure_list_sched(exec_ctx, &chand->waiting_for_config_closures);
   } else if (chand->resolver == NULL /* disconnected */) {
     grpc_closure_list_fail_all(
         &chand->waiting_for_config_closures,
         GRPC_ERROR_CREATE_REFERENCING("Channel disconnected", &error, 1));
-    grpc_exec_ctx_enqueue_list(exec_ctx, &chand->waiting_for_config_closures,
-                               NULL);
+    grpc_closure_list_sched(exec_ctx, &chand->waiting_for_config_closures);
   }
   if (lb_policy != NULL && chand->exit_idle_when_lb_policy_arrives) {
     GRPC_LB_POLICY_REF(lb_policy, "exit_idle");
@@ -424,7 +428,7 @@ static void cc_start_transport_op(grpc_exec_ctx *exec_ctx,
                                   grpc_transport_op *op) {
   channel_data *chand = elem->channel_data;
 
-  grpc_exec_ctx_sched(exec_ctx, op->on_consumed, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, op->on_consumed, GRPC_ERROR_NONE);
 
   GPR_ASSERT(op->set_accept_stream == false);
   if (op->bind_pollset != NULL) {
@@ -443,9 +447,8 @@ static void cc_start_transport_op(grpc_exec_ctx *exec_ctx,
 
   if (op->send_ping != NULL) {
     if (chand->lb_policy == NULL) {
-      grpc_exec_ctx_sched(exec_ctx, op->send_ping,
-                          GRPC_ERROR_CREATE("Ping with no load balancing"),
-                          NULL);
+      grpc_closure_sched(exec_ctx, op->send_ping,
+                         GRPC_ERROR_CREATE("Ping with no load balancing"));
     } else {
       grpc_lb_policy_ping_one(exec_ctx, chand->lb_policy, op->send_ping);
       op->bind_pollset = NULL;
@@ -464,8 +467,7 @@ static void cc_start_transport_op(grpc_exec_ctx *exec_ctx,
       if (!chand->started_resolving) {
         grpc_closure_list_fail_all(&chand->waiting_for_config_closures,
                                    GRPC_ERROR_REF(op->disconnect_with_error));
-        grpc_exec_ctx_enqueue_list(exec_ctx,
-                                   &chand->waiting_for_config_closures, NULL);
+        grpc_closure_list_sched(exec_ctx, &chand->waiting_for_config_closures);
       }
       if (chand->lb_policy != NULL) {
         grpc_pollset_set_del_pollset_set(exec_ctx,
@@ -499,24 +501,40 @@ static void cc_get_channel_info(grpc_exec_ctx *exec_ctx,
 }
 
 /* Constructor for channel_data */
-static void cc_init_channel_elem(grpc_exec_ctx *exec_ctx,
-                                 grpc_channel_element *elem,
-                                 grpc_channel_element_args *args) {
+static grpc_error *cc_init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                        grpc_channel_element *elem,
+                                        grpc_channel_element_args *args) {
   channel_data *chand = elem->channel_data;
-
   memset(chand, 0, sizeof(*chand));
-
   GPR_ASSERT(args->is_last);
   GPR_ASSERT(elem->filter == &grpc_client_channel_filter);
-
+  // Initialize data members.
   gpr_mu_init(&chand->mu);
-  grpc_closure_init(&chand->on_resolver_result_changed,
-                    on_resolver_result_changed, chand);
   chand->owning_stack = args->channel_stack;
-
+  grpc_closure_init(&chand->on_resolver_result_changed,
+                    on_resolver_result_changed, chand,
+                    grpc_schedule_on_exec_ctx);
+  chand->interested_parties = grpc_pollset_set_create();
   grpc_connectivity_state_init(&chand->state_tracker, GRPC_CHANNEL_IDLE,
                                "client_channel");
-  chand->interested_parties = grpc_pollset_set_create();
+  // Record client channel factory.
+  const grpc_arg *arg = grpc_channel_args_find(args->channel_args,
+                                               GRPC_ARG_CLIENT_CHANNEL_FACTORY);
+  GPR_ASSERT(arg != NULL);
+  GPR_ASSERT(arg->type == GRPC_ARG_POINTER);
+  grpc_client_channel_factory_ref(arg->value.pointer.p);
+  chand->client_channel_factory = arg->value.pointer.p;
+  // Instantiate resolver.
+  arg = grpc_channel_args_find(args->channel_args, GRPC_ARG_SERVER_URI);
+  GPR_ASSERT(arg != NULL);
+  GPR_ASSERT(arg->type == GRPC_ARG_STRING);
+  chand->resolver =
+      grpc_resolver_create(exec_ctx, arg->value.string, args->channel_args,
+                           chand->interested_parties);
+  if (chand->resolver == NULL) {
+    return GRPC_ERROR_CREATE("resolver creation failed");
+  }
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel_data */
@@ -540,7 +558,7 @@ static void cc_destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   gpr_free(chand->lb_policy_name);
   gpr_free(chand->service_config_json);
   if (chand->method_params_table != NULL) {
-    grpc_mdstr_hash_table_unref(chand->method_params_table);
+    grpc_mdstr_hash_table_unref(exec_ctx, chand->method_params_table);
   }
   grpc_connectivity_state_destroy(exec_ctx, &chand->state_tracker);
   grpc_pollset_set_destroy(chand->interested_parties);
@@ -662,8 +680,9 @@ static void retry_waiting_locked(grpc_exec_ctx *exec_ctx, call_data *calld) {
   calld->waiting_ops_count = 0;
   calld->waiting_ops_capacity = 0;
   GRPC_SUBCHANNEL_CALL_REF(a->call, "retry_ops");
-  grpc_exec_ctx_sched(exec_ctx, grpc_closure_create(retry_ops, a),
-                      GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(
+      exec_ctx, grpc_closure_create(retry_ops, a, grpc_schedule_on_exec_ctx),
+      GRPC_ERROR_NONE);
 }
 
 static void subchannel_ready(grpc_exec_ctx *exec_ctx, void *arg,
@@ -683,9 +702,15 @@ static void subchannel_ready(grpc_exec_ctx *exec_ctx, void *arg,
                                      "Failed to create subchannel", &error, 1));
   } else if (GET_CALL(calld) == CANCELLED_CALL) {
     /* already cancelled before subchannel became ready */
-    fail_locked(exec_ctx, calld,
-                GRPC_ERROR_CREATE_REFERENCING(
-                    "Cancelled before creating subchannel", &error, 1));
+    grpc_error *cancellation_error = GRPC_ERROR_CREATE_REFERENCING(
+        "Cancelled before creating subchannel", &error, 1);
+    /* if due to deadline, attach the deadline exceeded status to the error */
+    if (gpr_time_cmp(calld->deadline, gpr_now(GPR_CLOCK_MONOTONIC)) < 0) {
+      cancellation_error =
+          grpc_error_set_int(cancellation_error, GRPC_ERROR_INT_GRPC_STATUS,
+                             GRPC_STATUS_DEADLINE_EXCEEDED);
+    }
+    fail_locked(exec_ctx, calld, cancellation_error);
   } else {
     /* Create call on subchannel. */
     grpc_subchannel_call *subchannel_call = NULL;
@@ -739,14 +764,14 @@ static void continue_picking(grpc_exec_ctx *exec_ctx, void *arg,
   if (cpa->connected_subchannel == NULL) {
     /* cancelled, do nothing */
   } else if (error != GRPC_ERROR_NONE) {
-    grpc_exec_ctx_sched(exec_ctx, cpa->on_ready, GRPC_ERROR_REF(error), NULL);
+    grpc_closure_sched(exec_ctx, cpa->on_ready, GRPC_ERROR_REF(error));
   } else {
     call_data *calld = cpa->elem->call_data;
     gpr_mu_lock(&calld->mu);
     if (pick_subchannel(exec_ctx, cpa->elem, cpa->initial_metadata,
                         cpa->initial_metadata_flags, cpa->connected_subchannel,
                         cpa->on_ready, GRPC_ERROR_NONE)) {
-      grpc_exec_ctx_sched(exec_ctx, cpa->on_ready, GRPC_ERROR_NONE, NULL);
+      grpc_closure_sched(exec_ctx, cpa->on_ready, GRPC_ERROR_NONE);
     }
     gpr_mu_unlock(&calld->mu);
   }
@@ -778,9 +803,9 @@ static bool pick_subchannel(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
       cpa = closure->cb_arg;
       if (cpa->connected_subchannel == connected_subchannel) {
         cpa->connected_subchannel = NULL;
-        grpc_exec_ctx_sched(
+        grpc_closure_sched(
             exec_ctx, cpa->on_ready,
-            GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1), NULL);
+            GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1));
       }
     }
     gpr_mu_unlock(&chand->mu);
@@ -809,7 +834,6 @@ static bool pick_subchannel(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
         initial_metadata_flags &= ~GRPC_INITIAL_METADATA_WAIT_FOR_READY;
       }
     }
-    // TODO(dgq): make this deadline configurable somehow.
     const grpc_lb_policy_pick_args inputs = {
         initial_metadata, initial_metadata_flags, &calld->lb_token_mdelem,
         gpr_inf_future(GPR_CLOCK_MONOTONIC)};
@@ -832,12 +856,12 @@ static bool pick_subchannel(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     cpa->connected_subchannel = connected_subchannel;
     cpa->on_ready = on_ready;
     cpa->elem = elem;
-    grpc_closure_init(&cpa->closure, continue_picking, cpa);
+    grpc_closure_init(&cpa->closure, continue_picking, cpa,
+                      grpc_schedule_on_exec_ctx);
     grpc_closure_list_append(&chand->waiting_for_config_closures, &cpa->closure,
                              GRPC_ERROR_NONE);
   } else {
-    grpc_exec_ctx_sched(exec_ctx, on_ready, GRPC_ERROR_CREATE("Disconnected"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, on_ready, GRPC_ERROR_CREATE("Disconnected"));
   }
   gpr_mu_unlock(&chand->mu);
 
@@ -922,7 +946,8 @@ retry:
       calld->connected_subchannel == NULL &&
       op->send_initial_metadata != NULL) {
     calld->creation_phase = GRPC_SUBCHANNEL_CALL_HOLDER_PICKING_SUBCHANNEL;
-    grpc_closure_init(&calld->next_step, subchannel_ready, elem);
+    grpc_closure_init(&calld->next_step, subchannel_ready, elem,
+                      grpc_schedule_on_exec_ctx);
     GRPC_CALL_STACK_REF(calld->owning_call, "pick_subchannel");
     /* If a subchannel is not available immediately, the polling entity from
        call_data should be provided to channel_data's interested_parties, so
@@ -980,8 +1005,8 @@ static void read_service_config(grpc_exec_ctx *exec_ctx, void *arg,
     gpr_mu_unlock(&chand->mu);
     // If the method config table was present, use it.
     if (method_params_table != NULL) {
-      const method_parameters *method_params =
-          grpc_method_config_table_get(method_params_table, calld->path);
+      const method_parameters *method_params = grpc_method_config_table_get(
+          exec_ctx, method_params_table, calld->path);
       if (method_params != NULL) {
         const bool have_method_timeout =
             gpr_time_cmp(method_params->timeout, gpr_time_0(GPR_TIMESPAN)) != 0;
@@ -1004,7 +1029,7 @@ static void read_service_config(grpc_exec_ctx *exec_ctx, void *arg,
           gpr_mu_unlock(&calld->mu);
         }
       }
-      grpc_mdstr_hash_table_unref(method_params_table);
+      grpc_mdstr_hash_table_unref(exec_ctx, method_params_table);
     }
   }
   GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call, "read_service_config");
@@ -1045,8 +1070,8 @@ static grpc_error *cc_init_call_elem(grpc_exec_ctx *exec_ctx,
       grpc_mdstr_hash_table *method_params_table =
           grpc_mdstr_hash_table_ref(chand->method_params_table);
       gpr_mu_unlock(&chand->mu);
-      method_parameters *method_params =
-          grpc_method_config_table_get(method_params_table, args->path);
+      method_parameters *method_params = grpc_method_config_table_get(
+          exec_ctx, method_params_table, args->path);
       if (method_params != NULL) {
         if (gpr_time_cmp(method_params->timeout,
                          gpr_time_0(GPR_CLOCK_MONOTONIC)) != 0) {
@@ -1059,7 +1084,7 @@ static grpc_error *cc_init_call_elem(grpc_exec_ctx *exec_ctx,
               method_params->wait_for_ready;
         }
       }
-      grpc_mdstr_hash_table_unref(method_params_table);
+      grpc_mdstr_hash_table_unref(exec_ctx, method_params_table);
     } else {
       gpr_mu_unlock(&chand->mu);
     }
@@ -1068,7 +1093,8 @@ static grpc_error *cc_init_call_elem(grpc_exec_ctx *exec_ctx,
     // get the service config data once the resolver returns.
     // Take a reference to the call stack to be owned by the callback.
     GRPC_CALL_STACK_REF(calld->owning_call, "read_service_config");
-    grpc_closure_init(&calld->read_service_config, read_service_config, elem);
+    grpc_closure_init(&calld->read_service_config, read_service_config, elem,
+                      grpc_schedule_on_exec_ctx);
     grpc_closure_list_append(&chand->waiting_for_config_closures,
                              &calld->read_service_config, GRPC_ERROR_NONE);
     gpr_mu_unlock(&chand->mu);
@@ -1087,7 +1113,7 @@ static void cc_destroy_call_elem(grpc_exec_ctx *exec_ctx,
                                  void *and_free_memory) {
   call_data *calld = elem->call_data;
   grpc_deadline_state_destroy(exec_ctx, elem);
-  GRPC_MDSTR_UNREF(calld->path);
+  GRPC_MDSTR_UNREF(exec_ctx, calld->path);
   GRPC_ERROR_UNREF(calld->cancel_error);
   grpc_subchannel_call *call = GET_CALL(calld);
   if (call != NULL && call != CANCELLED_CALL) {
@@ -1130,30 +1156,6 @@ const grpc_channel_filter grpc_client_channel_filter = {
     "client-channel",
 };
 
-void grpc_client_channel_finish_initialization(
-    grpc_exec_ctx *exec_ctx, grpc_channel_stack *channel_stack,
-    grpc_resolver *resolver,
-    grpc_client_channel_factory *client_channel_factory) {
-  /* post construction initialization: set the transport setup pointer */
-  GPR_ASSERT(client_channel_factory != NULL);
-  grpc_channel_element *elem = grpc_channel_stack_last_element(channel_stack);
-  channel_data *chand = elem->channel_data;
-  gpr_mu_lock(&chand->mu);
-  GPR_ASSERT(!chand->resolver);
-  chand->resolver = resolver;
-  GRPC_RESOLVER_REF(resolver, "channel");
-  if (!grpc_closure_list_empty(chand->waiting_for_config_closures) ||
-      chand->exit_idle_when_lb_policy_arrives) {
-    chand->started_resolving = true;
-    GRPC_CHANNEL_STACK_REF(chand->owning_stack, "resolver");
-    grpc_resolver_next(exec_ctx, resolver, &chand->resolver_result,
-                       &chand->on_resolver_result_changed);
-  }
-  chand->client_channel_factory = client_channel_factory;
-  grpc_client_channel_factory_ref(client_channel_factory);
-  gpr_mu_unlock(&chand->mu);
-}
-
 grpc_connectivity_state grpc_client_channel_check_connectivity_state(
     grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect) {
   channel_data *chand = elem->channel_data;
@@ -1205,7 +1207,8 @@ void grpc_client_channel_watch_connectivity_state(
   w->pollset = pollset;
   w->on_complete = on_complete;
   grpc_pollset_set_add_pollset(exec_ctx, chand->interested_parties, pollset);
-  grpc_closure_init(&w->my_closure, on_external_watch_complete, w);
+  grpc_closure_init(&w->my_closure, on_external_watch_complete, w,
+                    grpc_schedule_on_exec_ctx);
   GRPC_CHANNEL_STACK_REF(w->chand->owning_stack,
                          "external_connectivity_watcher");
   gpr_mu_lock(&chand->mu);
diff --git a/src/core/ext/client_channel/client_channel.h b/src/core/ext/client_channel/client_channel.h
index ab5a84fdfbe1319ccc222279989bebe9487dd1e0..f02587d0c1e69658ba80cb2b2979bd63a8db99d5 100644
--- a/src/core/ext/client_channel/client_channel.h
+++ b/src/core/ext/client_channel/client_channel.h
@@ -38,6 +38,9 @@
 #include "src/core/ext/client_channel/resolver.h"
 #include "src/core/lib/channel/channel_stack.h"
 
+// Channel arg key for server URI string.
+#define GRPC_ARG_SERVER_URI "grpc.server_uri"
+
 /* A client channel is a channel that begins disconnected, and can connect
    to some endpoint on demand. If that endpoint disconnects, it will be
    connected to again later.
@@ -47,13 +50,6 @@
 
 extern const grpc_channel_filter grpc_client_channel_filter;
 
-/* Post-construction initializer to give the client channel its resolver
-   and factory. */
-void grpc_client_channel_finish_initialization(
-    grpc_exec_ctx *exec_ctx, grpc_channel_stack *channel_stack,
-    grpc_resolver *resolver,
-    grpc_client_channel_factory *client_channel_factory);
-
 grpc_connectivity_state grpc_client_channel_check_connectivity_state(
     grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect);
 
diff --git a/src/core/ext/client_channel/client_channel_factory.c b/src/core/ext/client_channel/client_channel_factory.c
index 4900832d5734e813a9c491fd12572d18640006fe..d2707a155668de891a765eca024198fc26cb1553 100644
--- a/src/core/ext/client_channel/client_channel_factory.c
+++ b/src/core/ext/client_channel/client_channel_factory.c
@@ -55,3 +55,33 @@ grpc_channel* grpc_client_channel_factory_create_channel(
   return factory->vtable->create_client_channel(exec_ctx, factory, target, type,
                                                 args);
 }
+
+static void* factory_arg_copy(void* factory) {
+  grpc_client_channel_factory_ref(factory);
+  return factory;
+}
+
+static void factory_arg_destroy(grpc_exec_ctx* exec_ctx, void* factory) {
+  // TODO(roth): Remove local exec_ctx when
+  // https://github.com/grpc/grpc/pull/8705 is merged.
+  grpc_client_channel_factory_unref(exec_ctx, factory);
+}
+
+static int factory_arg_cmp(void* factory1, void* factory2) {
+  if (factory1 < factory2) return -1;
+  if (factory1 > factory2) return 1;
+  return 0;
+}
+
+static const grpc_arg_pointer_vtable factory_arg_vtable = {
+    factory_arg_copy, factory_arg_destroy, factory_arg_cmp};
+
+grpc_arg grpc_client_channel_factory_create_channel_arg(
+    grpc_client_channel_factory* factory) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_POINTER;
+  arg.key = GRPC_ARG_CLIENT_CHANNEL_FACTORY;
+  arg.value.pointer.p = factory;
+  arg.value.pointer.vtable = &factory_arg_vtable;
+  return arg;
+}
diff --git a/src/core/ext/client_channel/client_channel_factory.h b/src/core/ext/client_channel/client_channel_factory.h
index 2b8fc577b3b67f3873d2c3fb0034a460b7a9bb4b..bf2764b5370f8d2e0b2540a4580145aaf9f47923 100644
--- a/src/core/ext/client_channel/client_channel_factory.h
+++ b/src/core/ext/client_channel/client_channel_factory.h
@@ -39,6 +39,9 @@
 #include "src/core/ext/client_channel/subchannel.h"
 #include "src/core/lib/channel/channel_stack.h"
 
+// Channel arg key for client channel factory.
+#define GRPC_ARG_CLIENT_CHANNEL_FACTORY "grpc.client_channel_factory"
+
 typedef struct grpc_client_channel_factory grpc_client_channel_factory;
 typedef struct grpc_client_channel_factory_vtable
     grpc_client_channel_factory_vtable;
@@ -83,4 +86,7 @@ grpc_channel *grpc_client_channel_factory_create_channel(
     const char *target, grpc_client_channel_type type,
     const grpc_channel_args *args);
 
+grpc_arg grpc_client_channel_factory_create_channel_arg(
+    grpc_client_channel_factory *factory);
+
 #endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H */
diff --git a/src/core/ext/client_channel/client_channel_plugin.c b/src/core/ext/client_channel/client_channel_plugin.c
index a3e5079843906f6aa77f659b7ba7950000b20122..d50bba60f6a28a0cb201d00013c2c60b708d15f1 100644
--- a/src/core/ext/client_channel/client_channel_plugin.c
+++ b/src/core/ext/client_channel/client_channel_plugin.c
@@ -38,17 +38,20 @@
 #include <grpc/support/alloc.h>
 
 #include "src/core/ext/client_channel/client_channel.h"
+#include "src/core/ext/client_channel/http_connect_handshaker.h"
 #include "src/core/ext/client_channel/lb_policy_registry.h"
 #include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/client_channel/subchannel_index.h"
 #include "src/core/lib/surface/channel_init.h"
 
-static bool append_filter(grpc_channel_stack_builder *builder, void *arg) {
+static bool append_filter(grpc_exec_ctx *exec_ctx,
+                          grpc_channel_stack_builder *builder, void *arg) {
   return grpc_channel_stack_builder_append_filter(
       builder, (const grpc_channel_filter *)arg, NULL, NULL);
 }
 
-static bool set_default_host_if_unset(grpc_channel_stack_builder *builder,
+static bool set_default_host_if_unset(grpc_exec_ctx *exec_ctx,
+                                      grpc_channel_stack_builder *builder,
                                       void *unused) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);
@@ -66,9 +69,10 @@ static bool set_default_host_if_unset(grpc_channel_stack_builder *builder,
     arg.key = GRPC_ARG_DEFAULT_AUTHORITY;
     arg.value.string = default_authority;
     grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1);
-    grpc_channel_stack_builder_set_channel_arguments(builder, new_args);
+    grpc_channel_stack_builder_set_channel_arguments(exec_ctx, builder,
+                                                     new_args);
     gpr_free(default_authority);
-    grpc_channel_args_destroy(new_args);
+    grpc_channel_args_destroy(exec_ctx, new_args);
   }
   return true;
 }
@@ -81,6 +85,7 @@ void grpc_client_channel_init(void) {
                                    set_default_host_if_unset, NULL);
   grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX, append_filter,
                                    (void *)&grpc_client_channel_filter);
+  grpc_http_connect_register_handshaker_factory();
 }
 
 void grpc_client_channel_shutdown(void) {
diff --git a/src/core/ext/client_channel/connector.h b/src/core/ext/client_channel/connector.h
index 3de061620e3bc7ff4952a95c54a6d5429345c7ff..395f89b3b2c00314841a96e833f2fa8bad8357ba 100644
--- a/src/core/ext/client_channel/connector.h
+++ b/src/core/ext/client_channel/connector.h
@@ -48,9 +48,6 @@ struct grpc_connector {
 typedef struct {
   /** set of pollsets interested in this connection */
   grpc_pollset_set *interested_parties;
-  /** address to connect to */
-  const grpc_resolved_address *addr;
-  size_t addr_len;
   /** initial connect string to send */
   grpc_slice initial_connect_string;
   /** deadline for connection */
diff --git a/src/core/ext/client_channel/http_connect_handshaker.c b/src/core/ext/client_channel/http_connect_handshaker.c
index 572af52dfdb340432cd9ac51a3b938a3887567e0..fba32561acf822b04c776ced5815df6c8a98d0cc 100644
--- a/src/core/ext/client_channel/http_connect_handshaker.c
+++ b/src/core/ext/client_channel/http_connect_handshaker.c
@@ -40,10 +40,14 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/ext/client_channel/client_channel.h"
+#include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/client_channel/uri_parser.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/http/format_request.h"
 #include "src/core/lib/http/parser.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/env.h"
 
 typedef struct http_connect_handshaker {
@@ -51,7 +55,8 @@ typedef struct http_connect_handshaker {
   grpc_handshaker base;
 
   char* proxy_server;
-  char* server_name;
+  grpc_http_header* headers;
+  size_t num_headers;
 
   gpr_refcount refcount;
   gpr_mu mu;
@@ -82,12 +87,17 @@ static void http_connect_handshaker_unref(grpc_exec_ctx* exec_ctx,
       grpc_endpoint_destroy(exec_ctx, handshaker->endpoint_to_destroy);
     }
     if (handshaker->read_buffer_to_destroy != NULL) {
-      grpc_slice_buffer_destroy(handshaker->read_buffer_to_destroy);
+      grpc_slice_buffer_destroy_internal(exec_ctx,
+                                         handshaker->read_buffer_to_destroy);
       gpr_free(handshaker->read_buffer_to_destroy);
     }
     gpr_free(handshaker->proxy_server);
-    gpr_free(handshaker->server_name);
-    grpc_slice_buffer_destroy(&handshaker->write_buffer);
+    for (size_t i = 0; i < handshaker->num_headers; ++i) {
+      gpr_free(handshaker->headers[i].key);
+      gpr_free(handshaker->headers[i].value);
+    }
+    gpr_free(handshaker->headers);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &handshaker->write_buffer);
     grpc_http_parser_destroy(&handshaker->http_parser);
     grpc_http_response_destroy(&handshaker->http_response);
     gpr_free(handshaker);
@@ -97,12 +107,12 @@ static void http_connect_handshaker_unref(grpc_exec_ctx* exec_ctx,
 // Set args fields to NULL, saving the endpoint and read buffer for
 // later destruction.
 static void cleanup_args_for_failure_locked(
-    http_connect_handshaker* handshaker) {
+    grpc_exec_ctx* exec_ctx, http_connect_handshaker* handshaker) {
   handshaker->endpoint_to_destroy = handshaker->args->endpoint;
   handshaker->args->endpoint = NULL;
   handshaker->read_buffer_to_destroy = handshaker->args->read_buffer;
   handshaker->args->read_buffer = NULL;
-  grpc_channel_args_destroy(handshaker->args->args);
+  grpc_channel_args_destroy(exec_ctx, handshaker->args->args);
   handshaker->args->args = NULL;
 }
 
@@ -125,13 +135,13 @@ static void handshake_failed_locked(grpc_exec_ctx* exec_ctx,
     grpc_endpoint_shutdown(exec_ctx, handshaker->args->endpoint);
     // Not shutting down, so the handshake failed.  Clean up before
     // invoking the callback.
-    cleanup_args_for_failure_locked(handshaker);
+    cleanup_args_for_failure_locked(exec_ctx, handshaker);
     // Set shutdown to true so that subsequent calls to
     // http_connect_handshaker_shutdown() do nothing.
     handshaker->shutdown = true;
   }
   // Invoke callback.
-  grpc_exec_ctx_sched(exec_ctx, handshaker->on_handshake_done, error, NULL);
+  grpc_closure_sched(exec_ctx, handshaker->on_handshake_done, error);
 }
 
 // Callback invoked when finished writing HTTP CONNECT request.
@@ -193,7 +203,7 @@ static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
                                &handshaker->args->read_buffer->slices[i + 1],
                                handshaker->args->read_buffer->count - i - 1);
         grpc_slice_buffer_swap(handshaker->args->read_buffer, &tmp_buffer);
-        grpc_slice_buffer_destroy(&tmp_buffer);
+        grpc_slice_buffer_destroy_internal(exec_ctx, &tmp_buffer);
         break;
       }
     }
@@ -210,7 +220,8 @@ static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
   // complete (e.g., handling chunked transfer encoding or looking
   // at the Content-Length: header).
   if (handshaker->http_parser.state != GRPC_HTTP_BODY) {
-    grpc_slice_buffer_reset_and_unref(handshaker->args->read_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx,
+                                               handshaker->args->read_buffer);
     grpc_endpoint_read(exec_ctx, handshaker->args->endpoint,
                        handshaker->args->read_buffer,
                        &handshaker->response_read_closure);
@@ -229,7 +240,7 @@ static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
     goto done;
   }
   // Success.  Invoke handshake-done callback.
-  grpc_exec_ctx_sched(exec_ctx, handshaker->on_handshake_done, error, NULL);
+  grpc_closure_sched(exec_ctx, handshaker->on_handshake_done, error);
 done:
   // Set shutdown to true so that subsequent calls to
   // http_connect_handshaker_shutdown() do nothing.
@@ -255,7 +266,7 @@ static void http_connect_handshaker_shutdown(grpc_exec_ctx* exec_ctx,
   if (!handshaker->shutdown) {
     handshaker->shutdown = true;
     grpc_endpoint_shutdown(exec_ctx, handshaker->args->endpoint);
-    cleanup_args_for_failure_locked(handshaker);
+    cleanup_args_for_failure_locked(exec_ctx, handshaker);
   }
   gpr_mu_unlock(&handshaker->mu);
 }
@@ -265,18 +276,29 @@ static void http_connect_handshaker_do_handshake(
     grpc_tcp_server_acceptor* acceptor, grpc_closure* on_handshake_done,
     grpc_handshaker_args* args) {
   http_connect_handshaker* handshaker = (http_connect_handshaker*)handshaker_in;
-  gpr_mu_lock(&handshaker->mu);
+  // Get server name from channel args.
+  const grpc_arg* arg = grpc_channel_args_find(args->args, GRPC_ARG_SERVER_URI);
+  GPR_ASSERT(arg != NULL);
+  GPR_ASSERT(arg->type == GRPC_ARG_STRING);
+  char* canonical_uri =
+      grpc_resolver_factory_add_default_prefix_if_needed(arg->value.string);
+  grpc_uri* uri = grpc_uri_parse(canonical_uri, 1);
+  char* server_name = uri->path;
+  if (server_name[0] == '/') ++server_name;
   // Save state in the handshaker object.
+  gpr_mu_lock(&handshaker->mu);
   handshaker->args = args;
   handshaker->on_handshake_done = on_handshake_done;
   // Send HTTP CONNECT request.
-  gpr_log(GPR_INFO, "Connecting to server %s via HTTP proxy %s",
-          handshaker->server_name, handshaker->proxy_server);
+  gpr_log(GPR_INFO, "Connecting to server %s via HTTP proxy %s", server_name,
+          handshaker->proxy_server);
   grpc_httpcli_request request;
   memset(&request, 0, sizeof(request));
-  request.host = handshaker->proxy_server;
+  request.host = server_name;
   request.http.method = "CONNECT";
-  request.http.path = handshaker->server_name;
+  request.http.path = server_name;
+  request.http.hdrs = handshaker->headers;
+  request.http.hdr_count = handshaker->num_headers;
   request.handshaker = &grpc_httpcli_plaintext;
   grpc_slice request_slice = grpc_httpcli_format_connect_request(&request);
   grpc_slice_buffer_add(&handshaker->write_buffer, request_slice);
@@ -285,6 +307,9 @@ static void http_connect_handshaker_do_handshake(
   grpc_endpoint_write(exec_ctx, args->endpoint, &handshaker->write_buffer,
                       &handshaker->request_done_closure);
   gpr_mu_unlock(&handshaker->mu);
+  // Clean up.
+  gpr_free(canonical_uri);
+  grpc_uri_destroy(uri);
 }
 
 static const grpc_handshaker_vtable http_connect_handshaker_vtable = {
@@ -292,21 +317,28 @@ static const grpc_handshaker_vtable http_connect_handshaker_vtable = {
     http_connect_handshaker_do_handshake};
 
 grpc_handshaker* grpc_http_connect_handshaker_create(const char* proxy_server,
-                                                     const char* server_name) {
+                                                     grpc_http_header* headers,
+                                                     size_t num_headers) {
   GPR_ASSERT(proxy_server != NULL);
-  GPR_ASSERT(server_name != NULL);
   http_connect_handshaker* handshaker = gpr_malloc(sizeof(*handshaker));
   memset(handshaker, 0, sizeof(*handshaker));
   grpc_handshaker_init(&http_connect_handshaker_vtable, &handshaker->base);
   gpr_mu_init(&handshaker->mu);
   gpr_ref_init(&handshaker->refcount, 1);
   handshaker->proxy_server = gpr_strdup(proxy_server);
-  handshaker->server_name = gpr_strdup(server_name);
+  if (num_headers > 0) {
+    handshaker->headers = gpr_malloc(sizeof(grpc_http_header) * num_headers);
+    for (size_t i = 0; i < num_headers; ++i) {
+      handshaker->headers[i].key = gpr_strdup(headers[i].key);
+      handshaker->headers[i].value = gpr_strdup(headers[i].value);
+    }
+    handshaker->num_headers = num_headers;
+  }
   grpc_slice_buffer_init(&handshaker->write_buffer);
   grpc_closure_init(&handshaker->request_done_closure, on_write_done,
-                    handshaker);
+                    handshaker, grpc_schedule_on_exec_ctx);
   grpc_closure_init(&handshaker->response_read_closure, on_read_done,
-                    handshaker);
+                    handshaker, grpc_schedule_on_exec_ctx);
   grpc_http_parser_init(&handshaker->http_parser, GRPC_HTTP_RESPONSE,
                         &handshaker->http_response);
   return &handshaker->base;
@@ -335,3 +367,33 @@ done:
   grpc_uri_destroy(uri);
   return proxy_name;
 }
+
+//
+// handshaker factory
+//
+
+static void handshaker_factory_add_handshakers(
+    grpc_exec_ctx* exec_ctx, grpc_handshaker_factory* factory,
+    const grpc_channel_args* args, grpc_handshake_manager* handshake_mgr) {
+  char* proxy_name = grpc_get_http_proxy_server();
+  if (proxy_name != NULL) {
+    grpc_handshake_manager_add(
+        handshake_mgr,
+        grpc_http_connect_handshaker_create(proxy_name, NULL, 0));
+    gpr_free(proxy_name);
+  }
+}
+
+static void handshaker_factory_destroy(grpc_exec_ctx* exec_ctx,
+                                       grpc_handshaker_factory* factory) {}
+
+static const grpc_handshaker_factory_vtable handshaker_factory_vtable = {
+    handshaker_factory_add_handshakers, handshaker_factory_destroy};
+
+static grpc_handshaker_factory handshaker_factory = {
+    &handshaker_factory_vtable};
+
+void grpc_http_connect_register_handshaker_factory() {
+  grpc_handshaker_factory_register(true /* at_start */, HANDSHAKER_CLIENT,
+                                   &handshaker_factory);
+}
diff --git a/src/core/ext/client_channel/http_connect_handshaker.h b/src/core/ext/client_channel/http_connect_handshaker.h
index c689df2b2b52ec6a5dbf7b98351ba9e7a7e9cad2..c2e68de7167bff20cb65b033268a519886f5cc74 100644
--- a/src/core/ext/client_channel/http_connect_handshaker.h
+++ b/src/core/ext/client_channel/http_connect_handshaker.h
@@ -35,13 +35,18 @@
 #define GRPC_CORE_EXT_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H
 
 #include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/http/parser.h"
 
-/// Does NOT take ownership of \a proxy_server or \a server_name.
+/// Creates a new HTTP CONNECT handshaker.
 grpc_handshaker* grpc_http_connect_handshaker_create(const char* proxy_server,
-                                                     const char* server_name);
+                                                     grpc_http_header* headers,
+                                                     size_t num_headers);
 
 /// Returns the name of the proxy to use, or NULL if no proxy is configured.
 /// Caller takes ownership of result.
 char* grpc_get_http_proxy_server();
 
+/// Registers handshaker factory.
+void grpc_http_connect_register_handshaker_factory();
+
 #endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H */
diff --git a/src/core/ext/client_channel/lb_policy_factory.c b/src/core/ext/client_channel/lb_policy_factory.c
index 8a474c881854fb968a68f5140b4e57f1fdd2b007..7af9bb04112818bf74a72591fede31ac97f886a0 100644
--- a/src/core/ext/client_channel/lb_policy_factory.c
+++ b/src/core/ext/client_channel/lb_policy_factory.c
@@ -112,11 +112,13 @@ int grpc_lb_addresses_cmp(const grpc_lb_addresses* addresses1,
   return 0;
 }
 
-void grpc_lb_addresses_destroy(grpc_lb_addresses* addresses) {
+void grpc_lb_addresses_destroy(grpc_exec_ctx* exec_ctx,
+                               grpc_lb_addresses* addresses) {
   for (size_t i = 0; i < addresses->num_addresses; ++i) {
     gpr_free(addresses->addresses[i].balancer_name);
     if (addresses->addresses[i].user_data != NULL) {
-      addresses->user_data_vtable->destroy(addresses->addresses[i].user_data);
+      addresses->user_data_vtable->destroy(exec_ctx,
+                                           addresses->addresses[i].user_data);
     }
   }
   gpr_free(addresses->addresses);
@@ -126,8 +128,8 @@ void grpc_lb_addresses_destroy(grpc_lb_addresses* addresses) {
 static void* lb_addresses_copy(void* addresses) {
   return grpc_lb_addresses_copy(addresses);
 }
-static void lb_addresses_destroy(void* addresses) {
-  grpc_lb_addresses_destroy(addresses);
+static void lb_addresses_destroy(grpc_exec_ctx* exec_ctx, void* addresses) {
+  grpc_lb_addresses_destroy(exec_ctx, addresses);
 }
 static int lb_addresses_cmp(void* addresses1, void* addresses2) {
   return grpc_lb_addresses_cmp(addresses1, addresses2);
diff --git a/src/core/ext/client_channel/lb_policy_factory.h b/src/core/ext/client_channel/lb_policy_factory.h
index e2b8080a32917461c003b73930b55df6d669ab64..9b8b03f982b0b1e9973bc0f8026b8ac9b62708f4 100644
--- a/src/core/ext/client_channel/lb_policy_factory.h
+++ b/src/core/ext/client_channel/lb_policy_factory.h
@@ -40,6 +40,9 @@
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 
+// Channel arg key for grpc_lb_addresses.
+#define GRPC_ARG_LB_ADDRESSES "grpc.lb_addresses"
+
 typedef struct grpc_lb_policy_factory grpc_lb_policy_factory;
 typedef struct grpc_lb_policy_factory_vtable grpc_lb_policy_factory_vtable;
 
@@ -61,7 +64,7 @@ typedef struct grpc_lb_address {
 
 typedef struct grpc_lb_user_data_vtable {
   void *(*copy)(void *);
-  void (*destroy)(void *);
+  void (*destroy)(grpc_exec_ctx *exec_ctx, void *);
   int (*cmp)(void *, void *);
 } grpc_lb_user_data_vtable;
 
@@ -93,7 +96,8 @@ int grpc_lb_addresses_cmp(const grpc_lb_addresses *addresses1,
                           const grpc_lb_addresses *addresses2);
 
 /** Destroys \a addresses. */
-void grpc_lb_addresses_destroy(grpc_lb_addresses *addresses);
+void grpc_lb_addresses_destroy(grpc_exec_ctx *exec_ctx,
+                               grpc_lb_addresses *addresses);
 
 /** Returns a channel arg containing \a addresses. */
 grpc_arg grpc_lb_addresses_create_channel_arg(
diff --git a/src/core/ext/client_channel/resolver_factory.c b/src/core/ext/client_channel/resolver_factory.c
index 7c3d644257ca0d28469e8b39745a5f0f707f3ae4..00bbb92dd06adb8da427c9af3f1490dd1310ebbb 100644
--- a/src/core/ext/client_channel/resolver_factory.c
+++ b/src/core/ext/client_channel/resolver_factory.c
@@ -43,9 +43,10 @@ void grpc_resolver_factory_unref(grpc_resolver_factory* factory) {
 
 /** Create a resolver instance for a name */
 grpc_resolver* grpc_resolver_factory_create_resolver(
-    grpc_resolver_factory* factory, grpc_resolver_args* args) {
+    grpc_exec_ctx* exec_ctx, grpc_resolver_factory* factory,
+    grpc_resolver_args* args) {
   if (factory == NULL) return NULL;
-  return factory->vtable->create_resolver(factory, args);
+  return factory->vtable->create_resolver(exec_ctx, factory, args);
 }
 
 char* grpc_resolver_factory_get_default_authority(
diff --git a/src/core/ext/client_channel/resolver_factory.h b/src/core/ext/client_channel/resolver_factory.h
index 4da42e84d2f23c2887984b177dfe0282360dd2ce..3792ddca18c07ce91e10d6654f815af6506929dc 100644
--- a/src/core/ext/client_channel/resolver_factory.h
+++ b/src/core/ext/client_channel/resolver_factory.h
@@ -37,6 +37,7 @@
 #include "src/core/ext/client_channel/client_channel_factory.h"
 #include "src/core/ext/client_channel/resolver.h"
 #include "src/core/ext/client_channel/uri_parser.h"
+#include "src/core/lib/iomgr/pollset_set.h"
 
 typedef struct grpc_resolver_factory grpc_resolver_factory;
 typedef struct grpc_resolver_factory_vtable grpc_resolver_factory_vtable;
@@ -48,6 +49,7 @@ struct grpc_resolver_factory {
 typedef struct grpc_resolver_args {
   grpc_uri *uri;
   const grpc_channel_args *args;
+  grpc_pollset_set *pollset_set;
 } grpc_resolver_args;
 
 struct grpc_resolver_factory_vtable {
@@ -55,7 +57,8 @@ struct grpc_resolver_factory_vtable {
   void (*unref)(grpc_resolver_factory *factory);
 
   /** Implementation of grpc_resolver_factory_create_resolver */
-  grpc_resolver *(*create_resolver)(grpc_resolver_factory *factory,
+  grpc_resolver *(*create_resolver)(grpc_exec_ctx *exec_ctx,
+                                    grpc_resolver_factory *factory,
                                     grpc_resolver_args *args);
 
   /** Implementation of grpc_resolver_factory_get_default_authority */
@@ -70,7 +73,8 @@ void grpc_resolver_factory_unref(grpc_resolver_factory *resolver);
 
 /** Create a resolver instance for a name */
 grpc_resolver *grpc_resolver_factory_create_resolver(
-    grpc_resolver_factory *factory, grpc_resolver_args *args);
+    grpc_exec_ctx *exec_ctx, grpc_resolver_factory *factory,
+    grpc_resolver_args *args);
 
 /** Return a (freshly allocated with gpr_malloc) string representing
     the default authority to use for this scheme. */
diff --git a/src/core/ext/client_channel/resolver_registry.c b/src/core/ext/client_channel/resolver_registry.c
index d0f0fc3f332f012582490d57049dde65f79cd188..5110a7cad9e828675ff2373a2629ecb8d9ca7edd 100644
--- a/src/core/ext/client_channel/resolver_registry.c
+++ b/src/core/ext/client_channel/resolver_registry.c
@@ -109,8 +109,8 @@ static grpc_resolver_factory *lookup_factory_by_uri(grpc_uri *uri) {
 }
 
 static grpc_resolver_factory *resolve_factory(const char *target,
-                                              grpc_uri **uri) {
-  char *tmp;
+                                              grpc_uri **uri,
+                                              char **canonical_target) {
   grpc_resolver_factory *factory = NULL;
 
   GPR_ASSERT(uri != NULL);
@@ -118,37 +118,54 @@ static grpc_resolver_factory *resolve_factory(const char *target,
   factory = lookup_factory_by_uri(*uri);
   if (factory == NULL) {
     grpc_uri_destroy(*uri);
-    gpr_asprintf(&tmp, "%s%s", g_default_resolver_prefix, target);
-    *uri = grpc_uri_parse(tmp, 1);
+    gpr_asprintf(canonical_target, "%s%s", g_default_resolver_prefix, target);
+    *uri = grpc_uri_parse(*canonical_target, 1);
     factory = lookup_factory_by_uri(*uri);
     if (factory == NULL) {
       grpc_uri_destroy(grpc_uri_parse(target, 0));
-      grpc_uri_destroy(grpc_uri_parse(tmp, 0));
-      gpr_log(GPR_ERROR, "don't know how to resolve '%s' or '%s'", target, tmp);
+      grpc_uri_destroy(grpc_uri_parse(*canonical_target, 0));
+      gpr_log(GPR_ERROR, "don't know how to resolve '%s' or '%s'", target,
+              *canonical_target);
     }
-    gpr_free(tmp);
   }
   return factory;
 }
 
-grpc_resolver *grpc_resolver_create(const char *target,
-                                    const grpc_channel_args *args) {
+grpc_resolver *grpc_resolver_create(grpc_exec_ctx *exec_ctx, const char *target,
+                                    const grpc_channel_args *args,
+                                    grpc_pollset_set *pollset_set) {
   grpc_uri *uri = NULL;
-  grpc_resolver_factory *factory = resolve_factory(target, &uri);
+  char *canonical_target = NULL;
+  grpc_resolver_factory *factory =
+      resolve_factory(target, &uri, &canonical_target);
   grpc_resolver *resolver;
   grpc_resolver_args resolver_args;
   memset(&resolver_args, 0, sizeof(resolver_args));
   resolver_args.uri = uri;
   resolver_args.args = args;
-  resolver = grpc_resolver_factory_create_resolver(factory, &resolver_args);
+  resolver_args.pollset_set = pollset_set;
+  resolver =
+      grpc_resolver_factory_create_resolver(exec_ctx, factory, &resolver_args);
   grpc_uri_destroy(uri);
+  gpr_free(canonical_target);
   return resolver;
 }
 
 char *grpc_get_default_authority(const char *target) {
   grpc_uri *uri = NULL;
-  grpc_resolver_factory *factory = resolve_factory(target, &uri);
+  char *canonical_target = NULL;
+  grpc_resolver_factory *factory =
+      resolve_factory(target, &uri, &canonical_target);
   char *authority = grpc_resolver_factory_get_default_authority(factory, uri);
   grpc_uri_destroy(uri);
+  gpr_free(canonical_target);
   return authority;
 }
+
+char *grpc_resolver_factory_add_default_prefix_if_needed(const char *target) {
+  grpc_uri *uri = NULL;
+  char *canonical_target = NULL;
+  resolve_factory(target, &uri, &canonical_target);
+  grpc_uri_destroy(uri);
+  return canonical_target == NULL ? gpr_strdup(target) : canonical_target;
+}
diff --git a/src/core/ext/client_channel/resolver_registry.h b/src/core/ext/client_channel/resolver_registry.h
index 2a95a669f0d47a988b2ca8e5ec7b79b0d232bd21..a4606463ebd3065b319b4ccf67892e1a295e557c 100644
--- a/src/core/ext/client_channel/resolver_registry.h
+++ b/src/core/ext/client_channel/resolver_registry.h
@@ -35,6 +35,7 @@
 #define GRPC_CORE_EXT_CLIENT_CHANNEL_RESOLVER_REGISTRY_H
 
 #include "src/core/ext/client_channel/resolver_factory.h"
+#include "src/core/lib/iomgr/pollset_set.h"
 
 void grpc_resolver_registry_init();
 void grpc_resolver_registry_shutdown(void);
@@ -59,9 +60,12 @@ void grpc_register_resolver_type(grpc_resolver_factory *factory);
     return it.
     If a resolver factory was not found, return NULL.
     \a args is a set of channel arguments to be included in the result
-    (typically the set of arguments passed in from the client API). */
-grpc_resolver *grpc_resolver_create(const char *target,
-                                    const grpc_channel_args *args);
+    (typically the set of arguments passed in from the client API).
+    \a pollset_set is used to drive IO in the name resolution process, it
+    should not be NULL. */
+grpc_resolver *grpc_resolver_create(grpc_exec_ctx *exec_ctx, const char *target,
+                                    const grpc_channel_args *args,
+                                    grpc_pollset_set *pollset_set);
 
 /** Find a resolver factory given a name and return an (owned-by-the-caller)
  *  reference to it */
@@ -71,4 +75,8 @@ grpc_resolver_factory *grpc_resolver_factory_lookup(const char *name);
     representing the default authority to pass from a client. */
 char *grpc_get_default_authority(const char *target);
 
+/** Returns a newly allocated string containing \a target, adding the
+    default prefix if needed. */
+char *grpc_resolver_factory_add_default_prefix_if_needed(const char *target);
+
 #endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_RESOLVER_REGISTRY_H */
diff --git a/src/core/ext/client_channel/subchannel.c b/src/core/ext/client_channel/subchannel.c
index 08632079d62d39095aa48d131e6f11227977c6bc..8bd284507d2dd0c24c9db25f091d80f215315d32 100644
--- a/src/core/ext/client_channel/subchannel.c
+++ b/src/core/ext/client_channel/subchannel.c
@@ -38,14 +38,19 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/avl.h>
+#include <grpc/support/string_util.h>
 
 #include "src/core/ext/client_channel/client_channel.h"
 #include "src/core/ext/client_channel/initial_connect_string.h"
+#include "src/core/ext/client_channel/parse_address.h"
 #include "src/core/ext/client_channel/subchannel_index.h"
+#include "src/core/ext/client_channel/uri_parser.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/backoff.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/channel_init.h"
@@ -94,8 +99,6 @@ struct grpc_subchannel {
   size_t num_filters;
   /** channel arguments */
   grpc_channel_args *args;
-  /** address to connect to */
-  grpc_resolved_address *addr;
 
   grpc_subchannel_key *key;
 
@@ -108,6 +111,9 @@ struct grpc_subchannel {
   /** callback for connection finishing */
   grpc_closure connected;
 
+  /** callback for our alarm */
+  grpc_closure on_alarm;
+
   /** pollset_set tracking who's interested in a connection
       being setup */
   grpc_pollset_set *pollset_set;
@@ -206,9 +212,8 @@ static void subchannel_destroy(grpc_exec_ctx *exec_ctx, void *arg,
                                grpc_error *error) {
   grpc_subchannel *c = arg;
   gpr_free((void *)c->filters);
-  grpc_channel_args_destroy(c->args);
-  gpr_free(c->addr);
-  grpc_slice_unref(c->initial_connect_string);
+  grpc_channel_args_destroy(exec_ctx, c->args);
+  grpc_slice_unref_internal(exec_ctx, c->initial_connect_string);
   grpc_connectivity_state_destroy(exec_ctx, &c->state_tracker);
   grpc_connector_unref(exec_ctx, c->connector);
   grpc_pollset_set_destroy(c->pollset_set);
@@ -293,8 +298,9 @@ void grpc_subchannel_weak_unref(grpc_exec_ctx *exec_ctx,
   gpr_atm old_refs;
   old_refs = ref_mutate(c, -(gpr_atm)1, 1 REF_MUTATE_PURPOSE("WEAK_UNREF"));
   if (old_refs == 1) {
-    grpc_exec_ctx_sched(exec_ctx, grpc_closure_create(subchannel_destroy, c),
-                        GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, grpc_closure_create(subchannel_destroy, c,
+                                                     grpc_schedule_on_exec_ctx),
+                       GRPC_ERROR_NONE);
   }
 }
 
@@ -322,15 +328,21 @@ grpc_subchannel *grpc_subchannel_create(grpc_exec_ctx *exec_ctx,
   } else {
     c->filters = NULL;
   }
-  c->addr = gpr_malloc(sizeof(grpc_resolved_address));
-  if (args->addr->len)
-    memcpy(c->addr, args->addr, sizeof(grpc_resolved_address));
   c->pollset_set = grpc_pollset_set_create();
-  grpc_set_initial_connect_string(&c->addr, &c->initial_connect_string);
-  c->args = grpc_channel_args_copy(args->args);
+  grpc_resolved_address *addr = gpr_malloc(sizeof(*addr));
+  grpc_get_subchannel_address_arg(args->args, addr);
+  grpc_set_initial_connect_string(&addr, &c->initial_connect_string);
+  static const char *keys_to_remove[] = {GRPC_ARG_SUBCHANNEL_ADDRESS};
+  grpc_arg new_arg = grpc_create_subchannel_address_arg(addr);
+  gpr_free(addr);
+  c->args = grpc_channel_args_copy_and_add_and_remove(
+      args->args, keys_to_remove, GPR_ARRAY_SIZE(keys_to_remove), &new_arg, 1);
+  gpr_free(new_arg.value.string);
+
   c->root_external_state_watcher.next = c->root_external_state_watcher.prev =
       &c->root_external_state_watcher;
-  grpc_closure_init(&c->connected, subchannel_connected, c);
+  grpc_closure_init(&c->connected, subchannel_connected, c,
+                    grpc_schedule_on_exec_ctx);
   grpc_connectivity_state_init(&c->state_tracker, GRPC_CHANNEL_IDLE,
                                "subchannel");
   int initial_backoff_ms =
@@ -379,7 +391,6 @@ static void continue_connect_locked(grpc_exec_ctx *exec_ctx,
   grpc_connect_in_args args;
 
   args.interested_parties = c->pollset_set;
-  args.addr = c->addr;
   args.deadline = c->next_attempt;
   args.channel_args = c->args;
   args.initial_connect_string = c->initial_connect_string;
@@ -480,7 +491,8 @@ static void maybe_start_connecting_locked(grpc_exec_ctx *exec_ctx,
       gpr_log(GPR_INFO, "Retry in %" PRId64 ".%09d seconds",
               time_til_next.tv_sec, time_til_next.tv_nsec);
     }
-    grpc_timer_init(exec_ctx, &c->alarm, c->next_attempt, on_alarm, c, now);
+    grpc_closure_init(&c->on_alarm, on_alarm, c, grpc_schedule_on_exec_ctx);
+    grpc_timer_init(exec_ctx, &c->alarm, c->next_attempt, &c->on_alarm, now);
   }
 }
 
@@ -505,7 +517,8 @@ void grpc_subchannel_notify_on_state_change(
     w->subchannel = c;
     w->pollset_set = interested_parties;
     w->notify = notify;
-    grpc_closure_init(&w->closure, on_external_state_watcher_done, w);
+    grpc_closure_init(&w->closure, on_external_state_watcher_done, w,
+                      grpc_schedule_on_exec_ctx);
     if (interested_parties != NULL) {
       grpc_pollset_set_add_pollset_set(exec_ctx, c->pollset_set,
                                        interested_parties);
@@ -600,18 +613,24 @@ static void publish_transport_locked(grpc_exec_ctx *exec_ctx,
   /* construct channel stack */
   grpc_channel_stack_builder *builder = grpc_channel_stack_builder_create();
   grpc_channel_stack_builder_set_channel_arguments(
-      builder, c->connecting_result.channel_args);
+      exec_ctx, builder, c->connecting_result.channel_args);
   grpc_channel_stack_builder_set_transport(builder,
                                            c->connecting_result.transport);
 
-  if (grpc_channel_init_create_stack(exec_ctx, builder,
-                                     GRPC_CLIENT_SUBCHANNEL)) {
-    con = grpc_channel_stack_builder_finish(exec_ctx, builder, 0, 1,
-                                            connection_destroy, NULL);
-  } else {
-    grpc_channel_stack_builder_destroy(builder);
+  if (!grpc_channel_init_create_stack(exec_ctx, builder,
+                                      GRPC_CLIENT_SUBCHANNEL)) {
+    grpc_channel_stack_builder_destroy(exec_ctx, builder);
     abort(); /* TODO(ctiller): what to do here (previously we just crashed) */
   }
+  grpc_error *error = grpc_channel_stack_builder_finish(
+      exec_ctx, builder, 0, 1, connection_destroy, NULL, (void **)&con);
+  if (error != GRPC_ERROR_NONE) {
+    const char *msg = grpc_error_string(error);
+    gpr_log(GPR_ERROR, "error initializing subchannel stack: %s", msg);
+    grpc_error_free_string(msg);
+    GRPC_ERROR_UNREF(error);
+    abort(); /* TODO(ctiller): what to do here? */
+  }
   stk = CHANNEL_STACK_FROM_CONNECTION(con);
   memset(&c->connecting_result, 0, sizeof(c->connecting_result));
 
@@ -620,7 +639,7 @@ static void publish_transport_locked(grpc_exec_ctx *exec_ctx,
   sw_subchannel->subchannel = c;
   sw_subchannel->connectivity_state = GRPC_CHANNEL_READY;
   grpc_closure_init(&sw_subchannel->closure, subchannel_on_child_state_changed,
-                    sw_subchannel);
+                    sw_subchannel, grpc_schedule_on_exec_ctx);
 
   if (c->disconnected) {
     gpr_free(sw_subchannel);
@@ -680,7 +699,7 @@ static void subchannel_connected(grpc_exec_ctx *exec_ctx, void *arg,
   }
   gpr_mu_unlock(&c->mu);
   GRPC_SUBCHANNEL_WEAK_UNREF(exec_ctx, c, "connected");
-  grpc_channel_args_destroy(delete_channel_args);
+  grpc_channel_args_destroy(exec_ctx, delete_channel_args);
 }
 
 /*
@@ -757,3 +776,37 @@ grpc_call_stack *grpc_subchannel_call_get_call_stack(
     grpc_subchannel_call *subchannel_call) {
   return SUBCHANNEL_CALL_TO_CALL_STACK(subchannel_call);
 }
+
+static void grpc_uri_to_sockaddr(char *uri_str, grpc_resolved_address *addr) {
+  grpc_uri *uri = grpc_uri_parse(uri_str, 0 /* suppress_errors */);
+  GPR_ASSERT(uri != NULL);
+  if (strcmp(uri->scheme, "ipv4") == 0) {
+    GPR_ASSERT(parse_ipv4(uri, addr));
+  } else if (strcmp(uri->scheme, "ipv6") == 0) {
+    GPR_ASSERT(parse_ipv6(uri, addr));
+  } else {
+    GPR_ASSERT(parse_unix(uri, addr));
+  }
+  grpc_uri_destroy(uri);
+}
+
+void grpc_get_subchannel_address_arg(const grpc_channel_args *args,
+                                     grpc_resolved_address *addr) {
+  const grpc_arg *addr_arg =
+      grpc_channel_args_find(args, GRPC_ARG_SUBCHANNEL_ADDRESS);
+  GPR_ASSERT(addr_arg != NULL);  // Should have been set by LB policy.
+  GPR_ASSERT(addr_arg->type == GRPC_ARG_STRING);
+  memset(addr, 0, sizeof(*addr));
+  if (*addr_arg->value.string != '\0') {
+    grpc_uri_to_sockaddr(addr_arg->value.string, addr);
+  }
+}
+
+grpc_arg grpc_create_subchannel_address_arg(const grpc_resolved_address *addr) {
+  grpc_arg new_arg;
+  new_arg.key = GRPC_ARG_SUBCHANNEL_ADDRESS;
+  new_arg.type = GRPC_ARG_STRING;
+  new_arg.value.string =
+      addr->len > 0 ? grpc_sockaddr_to_uri(addr) : gpr_strdup("");
+  return new_arg;
+}
diff --git a/src/core/ext/client_channel/subchannel.h b/src/core/ext/client_channel/subchannel.h
index 10bae620dfa6e196eb1bc3f72a9806ed79e7a83a..684675eb37d84f2dce50c015b256a8f9ee90aef9 100644
--- a/src/core/ext/client_channel/subchannel.h
+++ b/src/core/ext/client_channel/subchannel.h
@@ -40,6 +40,9 @@
 #include "src/core/lib/transport/connectivity_state.h"
 #include "src/core/lib/transport/metadata.h"
 
+// Channel arg containing a grpc_resolved_address to connect to.
+#define GRPC_ARG_SUBCHANNEL_ADDRESS "grpc.subchannel_address"
+
 /** A (sub-)channel that knows how to connect to exactly one target
     address. Provides a target for load balancing. */
 typedef struct grpc_subchannel grpc_subchannel;
@@ -164,10 +167,6 @@ struct grpc_subchannel_args {
   size_t filter_count;
   /** Channel arguments to be supplied to the newly created channel */
   const grpc_channel_args *args;
-  /** Server name */
-  const char *server_name;
-  /** Address to connect to */
-  grpc_resolved_address *addr;
 };
 
 /** create a subchannel given a connector */
@@ -175,4 +174,12 @@ grpc_subchannel *grpc_subchannel_create(grpc_exec_ctx *exec_ctx,
                                         grpc_connector *connector,
                                         const grpc_subchannel_args *args);
 
+/// Sets \a addr from \a args.
+void grpc_get_subchannel_address_arg(const grpc_channel_args *args,
+                                     grpc_resolved_address *addr);
+
+/// Returns a new channel arg encoding the subchannel address as a string.
+/// Caller is responsible for freeing the string.
+grpc_arg grpc_create_subchannel_address_arg(const grpc_resolved_address *addr);
+
 #endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_SUBCHANNEL_H */
diff --git a/src/core/ext/client_channel/subchannel_index.c b/src/core/ext/client_channel/subchannel_index.c
index 227013a7d78e144e704f4c1ab1fd7525e2a38c81..11889300a2caebf36e429ed498946c83fbddd3de 100644
--- a/src/core/ext/client_channel/subchannel_index.c
+++ b/src/core/ext/client_channel/subchannel_index.c
@@ -86,12 +86,6 @@ static grpc_subchannel_key *create_key(
   } else {
     k->args.filters = NULL;
   }
-  k->args.server_name = gpr_strdup(args->server_name);
-  k->args.addr = gpr_malloc(sizeof(grpc_resolved_address));
-  k->args.addr->len = args->addr->len;
-  if (k->args.addr->len > 0) {
-    memcpy(k->args.addr, args->addr, sizeof(grpc_resolved_address));
-  }
   k->args.args = copy_channel_args(args->args);
   return k;
 }
@@ -109,16 +103,8 @@ static int subchannel_key_compare(grpc_subchannel_key *a,
                                   grpc_subchannel_key *b) {
   int c = GPR_ICMP(a->connector, b->connector);
   if (c != 0) return c;
-  c = GPR_ICMP(a->args.addr->len, b->args.addr->len);
-  if (c != 0) return c;
   c = GPR_ICMP(a->args.filter_count, b->args.filter_count);
   if (c != 0) return c;
-  c = strcmp(a->args.server_name, b->args.server_name);
-  if (c != 0) return c;
-  if (a->args.addr->len) {
-    c = memcmp(a->args.addr->addr, b->args.addr->addr, a->args.addr->len);
-    if (c != 0) return c;
-  }
   if (a->args.filter_count > 0) {
     c = memcmp(a->args.filters, b->args.filters,
                a->args.filter_count * sizeof(*a->args.filters));
@@ -131,9 +117,7 @@ void grpc_subchannel_key_destroy(grpc_exec_ctx *exec_ctx,
                                  grpc_subchannel_key *k) {
   grpc_connector_unref(exec_ctx, k->connector);
   gpr_free((grpc_channel_args *)k->args.filters);
-  grpc_channel_args_destroy((grpc_channel_args *)k->args.args);
-  gpr_free((void *)k->args.server_name);
-  gpr_free(k->args.addr);
+  grpc_channel_args_destroy(exec_ctx, (grpc_channel_args *)k->args.args);
   gpr_free(k);
 }
 
diff --git a/src/core/ext/client_channel/uri_parser.c b/src/core/ext/client_channel/uri_parser.c
index 0fbc542ef8a960939ea6ba8226b00869d868f798..f8c946b2757c0d5c7d25d1452ffcb11a0405ded4 100644
--- a/src/core/ext/client_channel/uri_parser.c
+++ b/src/core/ext/client_channel/uri_parser.c
@@ -42,7 +42,6 @@
 #include <grpc/support/port_platform.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
 /** a size_t default value... maps to all 1's */
@@ -138,7 +137,6 @@ static int parse_fragment_or_query(const char *uri_text, size_t *i) {
   return 1;
 }
 
-static void do_nothing(void *ignored) {}
 static void parse_query_parts(grpc_uri *uri) {
   static const char *QUERY_PARTS_SEPARATOR = "&";
   static const char *QUERY_PARTS_VALUE_SEPARATOR = "=";
@@ -149,38 +147,32 @@ static void parse_query_parts(grpc_uri *uri) {
     uri->num_query_parts = 0;
     return;
   }
-  grpc_slice query_slice =
-      grpc_slice_new(uri->query, strlen(uri->query), do_nothing);
-  grpc_slice_buffer query_parts; /* the &-separated elements of the query */
-  grpc_slice_buffer query_param_parts; /* the =-separated subelements */
 
-  grpc_slice_buffer_init(&query_parts);
-  grpc_slice_buffer_init(&query_param_parts);
-
-  grpc_slice_split(query_slice, QUERY_PARTS_SEPARATOR, &query_parts);
-  uri->query_parts = gpr_malloc(query_parts.count * sizeof(char *));
-  uri->query_parts_values = gpr_malloc(query_parts.count * sizeof(char *));
-  uri->num_query_parts = query_parts.count;
-  for (size_t i = 0; i < query_parts.count; i++) {
-    grpc_slice_split(query_parts.slices[i], QUERY_PARTS_VALUE_SEPARATOR,
-                     &query_param_parts);
-    GPR_ASSERT(query_param_parts.count > 0);
-    uri->query_parts[i] =
-        grpc_dump_slice(query_param_parts.slices[0], GPR_DUMP_ASCII);
-    if (query_param_parts.count > 1) {
+  gpr_string_split(uri->query, QUERY_PARTS_SEPARATOR, &uri->query_parts,
+                   &uri->num_query_parts);
+  uri->query_parts_values = gpr_malloc(uri->num_query_parts * sizeof(char **));
+  for (size_t i = 0; i < uri->num_query_parts; i++) {
+    char **query_param_parts;
+    size_t num_query_param_parts;
+    char *full = uri->query_parts[i];
+    gpr_string_split(full, QUERY_PARTS_VALUE_SEPARATOR, &query_param_parts,
+                     &num_query_param_parts);
+    GPR_ASSERT(num_query_param_parts > 0);
+    uri->query_parts[i] = query_param_parts[0];
+    if (num_query_param_parts > 1) {
       /* TODO(dgq): only the first value after the separator is considered.
        * Perhaps all chars after the first separator for the query part should
        * be included, even if they include the separator. */
-      uri->query_parts_values[i] =
-          grpc_dump_slice(query_param_parts.slices[1], GPR_DUMP_ASCII);
+      uri->query_parts_values[i] = query_param_parts[1];
     } else {
       uri->query_parts_values[i] = NULL;
     }
-    grpc_slice_buffer_reset_and_unref(&query_param_parts);
+    for (size_t j = 2; j < num_query_param_parts; j++) {
+      gpr_free(query_param_parts[j]);
+    }
+    gpr_free(query_param_parts);
+    gpr_free(full);
   }
-  grpc_slice_buffer_destroy(&query_parts);
-  grpc_slice_buffer_destroy(&query_param_parts);
-  grpc_slice_unref(query_slice);
 }
 
 grpc_uri *grpc_uri_parse(const char *uri_text, int suppress_errors) {
diff --git a/src/core/ext/lb_policy/grpclb/grpclb.c b/src/core/ext/lb_policy/grpclb/grpclb.c
index df0db61c22619f7a08d445465d337a635083c490..97f98df03af131c735e2718d2002a74c7f5affdf 100644
--- a/src/core/ext/lb_policy/grpclb/grpclb.c
+++ b/src/core/ext/lb_policy/grpclb/grpclb.c
@@ -106,6 +106,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
+#include "src/core/ext/client_channel/client_channel.h"
 #include "src/core/ext/client_channel/client_channel_factory.h"
 #include "src/core/ext/client_channel/lb_policy_factory.h"
 #include "src/core/ext/client_channel/lb_policy_registry.h"
@@ -116,6 +117,7 @@
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/backoff.h"
 #include "src/core/lib/support/string.h"
@@ -179,8 +181,7 @@ static void wrapped_rr_closure(grpc_exec_ctx *exec_ctx, void *arg,
   wrapped_rr_closure_arg *wc_arg = arg;
 
   GPR_ASSERT(wc_arg->wrapped_closure != NULL);
-  grpc_exec_ctx_sched(exec_ctx, wc_arg->wrapped_closure, GRPC_ERROR_REF(error),
-                      NULL);
+  grpc_closure_sched(exec_ctx, wc_arg->wrapped_closure, GRPC_ERROR_REF(error));
 
   if (wc_arg->rr_policy != NULL) {
     /* if *target is NULL, no pick has been made by the RR policy (eg, all
@@ -247,7 +248,8 @@ static void add_pending_pick(pending_pick **root,
       pick_args->lb_token_mdelem_storage;
   pp->wrapped_on_complete_arg.free_when_done = pp;
   grpc_closure_init(&pp->wrapped_on_complete_arg.wrapper_closure,
-                    wrapped_rr_closure, &pp->wrapped_on_complete_arg);
+                    wrapped_rr_closure, &pp->wrapped_on_complete_arg,
+                    grpc_schedule_on_exec_ctx);
   *root = pp;
 }
 
@@ -267,7 +269,8 @@ static void add_pending_ping(pending_ping **root, grpc_closure *notify) {
   pping->wrapped_notify_arg.free_when_done = pping;
   pping->next = *root;
   grpc_closure_init(&pping->wrapped_notify_arg.wrapper_closure,
-                    wrapped_rr_closure, &pping->wrapped_notify_arg);
+                    wrapped_rr_closure, &pping->wrapped_notify_arg,
+                    grpc_schedule_on_exec_ctx);
   *root = pping;
 }
 
@@ -324,6 +327,9 @@ typedef struct glb_lb_policy {
   /* A response from the LB server has been received. Process it */
   grpc_closure lb_on_response_received;
 
+  /* LB call retry timer callback. */
+  grpc_closure lb_on_call_retry;
+
   grpc_call *lb_call; /* streaming call to the LB server, */
 
   grpc_metadata_array lb_initial_metadata_recv; /* initial MD from LB server */
@@ -384,8 +390,8 @@ static bool is_server_valid(const grpc_grpclb_server *server, size_t idx,
 static void *lb_token_copy(void *token) {
   return token == NULL ? NULL : GRPC_MDELEM_REF(token);
 }
-static void lb_token_destroy(void *token) {
-  if (token != NULL) GRPC_MDELEM_UNREF(token);
+static void lb_token_destroy(grpc_exec_ctx *exec_ctx, void *token) {
+  if (token != NULL) GRPC_MDELEM_UNREF(exec_ctx, token);
 }
 static int lb_token_cmp(void *token1, void *token2) {
   if (token1 > token2) return 1;
@@ -419,7 +425,7 @@ static void parse_server(const grpc_grpclb_server *server,
 
 /* Returns addresses extracted from \a serverlist. */
 static grpc_lb_addresses *process_serverlist_locked(
-    const grpc_grpclb_serverlist *serverlist) {
+    grpc_exec_ctx *exec_ctx, const grpc_grpclb_serverlist *serverlist) {
   size_t num_valid = 0;
   /* first pass: count how many are valid in order to allocate the necessary
    * memory in a single block */
@@ -455,8 +461,8 @@ static grpc_lb_addresses *process_serverlist_locked(
           strnlen(server->load_balance_token, lb_token_max_length);
       grpc_mdstr *lb_token_mdstr = grpc_mdstr_from_buffer(
           (uint8_t *)server->load_balance_token, lb_token_length);
-      user_data = grpc_mdelem_from_metadata_strings(GRPC_MDSTR_LB_TOKEN,
-                                                    lb_token_mdstr);
+      user_data = grpc_mdelem_from_metadata_strings(
+          exec_ctx, GRPC_MDSTR_LB_TOKEN, lb_token_mdstr);
     } else {
       char *uri = grpc_sockaddr_to_uri(&addr);
       gpr_log(GPR_INFO,
@@ -579,7 +585,8 @@ static grpc_lb_policy *create_rr_locked(
   grpc_lb_policy_args args;
   memset(&args, 0, sizeof(args));
   args.client_channel_factory = glb_policy->cc_factory;
-  grpc_lb_addresses *addresses = process_serverlist_locked(serverlist);
+  grpc_lb_addresses *addresses =
+      process_serverlist_locked(exec_ctx, serverlist);
 
   // Replace the LB addresses in the channel args that we pass down to
   // the subchannel.
@@ -591,8 +598,8 @@ static grpc_lb_policy *create_rr_locked(
 
   grpc_lb_policy *rr = grpc_lb_policy_create(exec_ctx, "round_robin", &args);
   GPR_ASSERT(rr != NULL);
-  grpc_lb_addresses_destroy(addresses);
-  grpc_channel_args_destroy(args.args);
+  grpc_lb_addresses_destroy(exec_ctx, addresses);
+  grpc_channel_args_destroy(exec_ctx, args.args);
   return rr;
 }
 
@@ -666,7 +673,7 @@ static void rr_handover_locked(grpc_exec_ctx *exec_ctx,
       gpr_malloc(sizeof(rr_connectivity_data));
   memset(rr_connectivity, 0, sizeof(rr_connectivity_data));
   grpc_closure_init(&rr_connectivity->on_change, glb_rr_connectivity_changed,
-                    rr_connectivity);
+                    rr_connectivity, grpc_schedule_on_exec_ctx);
   rr_connectivity->glb_policy = glb_policy;
   rr_connectivity->state = new_rr_state;
 
@@ -743,12 +750,6 @@ static void glb_rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
 static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
                                   grpc_lb_policy_factory *factory,
                                   grpc_lb_policy_args *args) {
-  /* Get server name. */
-  const grpc_arg *arg =
-      grpc_channel_args_find(args->args, GRPC_ARG_SERVER_NAME);
-  const char *server_name =
-      arg != NULL && arg->type == GRPC_ARG_STRING ? arg->value.string : NULL;
-
   /* Count the number of gRPC-LB addresses. There must be at least one.
    * TODO(roth): For now, we ignore non-balancer addresses, but in the
    * future, we may change the behavior such that we fall back to using
@@ -756,7 +757,8 @@ static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
    * time, this should be changed to allow a list with no balancer addresses,
    * since the resolver might fail to return a balancer address even when
    * this is the right LB policy to use. */
-  arg = grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
+  const grpc_arg *arg =
+      grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
   GPR_ASSERT(arg != NULL && arg->type == GRPC_ARG_POINTER);
   grpc_lb_addresses *addresses = arg->value.pointer.p;
   size_t num_grpclb_addrs = 0;
@@ -768,13 +770,25 @@ static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
   glb_lb_policy *glb_policy = gpr_malloc(sizeof(*glb_policy));
   memset(glb_policy, 0, sizeof(*glb_policy));
 
+  /* Get server name. */
+  arg = grpc_channel_args_find(args->args, GRPC_ARG_SERVER_URI);
+  GPR_ASSERT(arg != NULL);
+  GPR_ASSERT(arg->type == GRPC_ARG_STRING);
+  grpc_uri *uri = grpc_uri_parse(arg->value.string, true);
+  GPR_ASSERT(uri->path[0] != '\0');
+  glb_policy->server_name =
+      gpr_strdup(uri->path[0] == '/' ? uri->path + 1 : uri->path);
+  if (grpc_lb_glb_trace) {
+    gpr_log(GPR_INFO, "Will use '%s' as the server name for LB request.",
+            glb_policy->server_name);
+  }
+  grpc_uri_destroy(uri);
+
   /* All input addresses in addresses come from a resolver that claims
    * they are LB services. It's the resolver's responsibility to make sure
-   * this
-   * policy is only instantiated and used in that case.
+   * this policy is only instantiated and used in that case.
    *
    * Create a client channel over them to communicate with a LB service */
-  glb_policy->server_name = gpr_strdup(server_name);
   glb_policy->cc_factory = args->client_channel_factory;
   glb_policy->args = grpc_channel_args_copy(args->args);
   GPR_ASSERT(glb_policy->cc_factory != NULL);
@@ -818,15 +832,20 @@ static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
    * We need the LB channel to return addresses with is_balancer=false
    * so that it does not wind up recursively using the grpclb LB policy,
    * as per the special case logic in client_channel.c.
+   *
+   * Finally, we also strip out the channel arg for the server URI,
+   * since that will be different for the LB channel than for the parent
+   * channel.  (The client channel factory will re-add this arg with
+   * the right value.)
    */
-  static const char *keys_to_remove[] = {GRPC_ARG_LB_POLICY_NAME,
-                                         GRPC_ARG_LB_ADDRESSES};
+  static const char *keys_to_remove[] = {
+      GRPC_ARG_LB_POLICY_NAME, GRPC_ARG_LB_ADDRESSES, GRPC_ARG_SERVER_URI};
   grpc_channel_args *new_args = grpc_channel_args_copy_and_remove(
       args->args, keys_to_remove, GPR_ARRAY_SIZE(keys_to_remove));
   glb_policy->lb_channel = grpc_client_channel_factory_create_channel(
       exec_ctx, glb_policy->cc_factory, target_uri_str,
       GRPC_CLIENT_CHANNEL_TYPE_LOAD_BALANCING, new_args);
-  grpc_channel_args_destroy(new_args);
+  grpc_channel_args_destroy(exec_ctx, new_args);
 
   gpr_free(target_uri_str);
   for (size_t i = 0; i < num_grpclb_addrs; i++) {
@@ -852,7 +871,7 @@ static void glb_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   GPR_ASSERT(glb_policy->pending_picks == NULL);
   GPR_ASSERT(glb_policy->pending_pings == NULL);
   gpr_free((void *)glb_policy->server_name);
-  grpc_channel_args_destroy(glb_policy->args);
+  grpc_channel_args_destroy(exec_ctx, glb_policy->args);
   grpc_channel_destroy(glb_policy->lb_channel);
   glb_policy->lb_channel = NULL;
   grpc_connectivity_state_destroy(exec_ctx, &glb_policy->state_tracker);
@@ -895,15 +914,15 @@ static void glb_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   while (pp != NULL) {
     pending_pick *next = pp->next;
     *pp->target = NULL;
-    grpc_exec_ctx_sched(exec_ctx, &pp->wrapped_on_complete_arg.wrapper_closure,
-                        GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, &pp->wrapped_on_complete_arg.wrapper_closure,
+                       GRPC_ERROR_NONE);
     pp = next;
   }
 
   while (pping != NULL) {
     pending_ping *next = pping->next;
-    grpc_exec_ctx_sched(exec_ctx, &pping->wrapped_notify_arg.wrapper_closure,
-                        GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, &pping->wrapped_notify_arg.wrapper_closure,
+                       GRPC_ERROR_NONE);
     pping = next;
   }
 }
@@ -919,9 +938,9 @@ static void glb_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if (pp->target == target) {
       *target = NULL;
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, &pp->wrapped_on_complete_arg.wrapper_closure,
-          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1));
     } else {
       pp->next = glb_policy->pending_picks;
       glb_policy->pending_picks = pp;
@@ -944,9 +963,9 @@ static void glb_cancel_picks(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if ((pp->pick_args.initial_metadata_flags & initial_metadata_flags_mask) ==
         initial_metadata_flags_eq) {
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, &pp->wrapped_on_complete_arg.wrapper_closure,
-          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1));
     } else {
       pp->next = glb_policy->pending_picks;
       glb_policy->pending_picks = pp;
@@ -981,11 +1000,10 @@ static int glb_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
                     grpc_closure *on_complete) {
   if (pick_args->lb_token_mdelem_storage == NULL) {
     *target = NULL;
-    grpc_exec_ctx_sched(
+    grpc_closure_sched(
         exec_ctx, on_complete,
         GRPC_ERROR_CREATE("No mdelem storage for the LB token. Load reporting "
-                          "won't work without it. Failing"),
-        NULL);
+                          "won't work without it. Failing"));
     return 0;
   }
 
@@ -1004,7 +1022,8 @@ static int glb_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     wrapped_rr_closure_arg *wc_arg = gpr_malloc(sizeof(wrapped_rr_closure_arg));
     memset(wc_arg, 0, sizeof(wrapped_rr_closure_arg));
 
-    grpc_closure_init(&wc_arg->wrapper_closure, wrapped_rr_closure, wc_arg);
+    grpc_closure_init(&wc_arg->wrapper_closure, wrapped_rr_closure, wc_arg,
+                      grpc_schedule_on_exec_ctx);
     wc_arg->rr_policy = glb_policy->rr_policy;
     wc_arg->target = target;
     wc_arg->wrapped_closure = on_complete;
@@ -1075,7 +1094,8 @@ static void lb_on_server_status_received(grpc_exec_ctx *exec_ctx, void *arg,
                                          grpc_error *error);
 static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
                                     grpc_error *error);
-static void lb_call_init_locked(glb_lb_policy *glb_policy) {
+static void lb_call_init_locked(grpc_exec_ctx *exec_ctx,
+                                glb_lb_policy *glb_policy) {
   GPR_ASSERT(glb_policy->server_name != NULL);
   GPR_ASSERT(glb_policy->server_name[0] != '\0');
   GPR_ASSERT(!glb_policy->shutting_down);
@@ -1084,7 +1104,7 @@ static void lb_call_init_locked(glb_lb_policy *glb_policy) {
    * glb_policy->base.interested_parties, which is comprised of the polling
    * entities from \a client_channel. */
   glb_policy->lb_call = grpc_channel_create_pollset_set_call(
-      glb_policy->lb_channel, NULL, GRPC_PROPAGATE_DEFAULTS,
+      exec_ctx, glb_policy->lb_channel, NULL, GRPC_PROPAGATE_DEFAULTS,
       glb_policy->base.interested_parties,
       "/grpc.lb.v1.LoadBalancer/BalanceLoad", glb_policy->server_name,
       glb_policy->deadline, NULL);
@@ -1097,16 +1117,18 @@ static void lb_call_init_locked(glb_lb_policy *glb_policy) {
   grpc_slice request_payload_slice = grpc_grpclb_request_encode(request);
   glb_policy->lb_request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
-  grpc_slice_unref(request_payload_slice);
+  grpc_slice_unref_internal(exec_ctx, request_payload_slice);
   grpc_grpclb_request_destroy(request);
 
   glb_policy->lb_call_status_details = NULL;
   glb_policy->lb_call_status_details_capacity = 0;
 
   grpc_closure_init(&glb_policy->lb_on_server_status_received,
-                    lb_on_server_status_received, glb_policy);
+                    lb_on_server_status_received, glb_policy,
+                    grpc_schedule_on_exec_ctx);
   grpc_closure_init(&glb_policy->lb_on_response_received,
-                    lb_on_response_received, glb_policy);
+                    lb_on_response_received, glb_policy,
+                    grpc_schedule_on_exec_ctx);
 
   gpr_backoff_init(&glb_policy->lb_call_backoff_state,
                    GRPC_GRPCLB_INITIAL_CONNECT_BACKOFF_SECONDS,
@@ -1136,7 +1158,7 @@ static void query_for_backends_locked(grpc_exec_ctx *exec_ctx,
   GPR_ASSERT(glb_policy->lb_channel != NULL);
   if (glb_policy->shutting_down) return;
 
-  lb_call_init_locked(glb_policy);
+  lb_call_init_locked(exec_ctx, glb_policy);
 
   if (grpc_lb_glb_trace) {
     gpr_log(GPR_INFO, "Query for backends (grpclb: %p, lb_call: %p)",
@@ -1221,7 +1243,7 @@ static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
         grpc_grpclb_response_parse_serverlist(response_slice);
     if (serverlist != NULL) {
       GPR_ASSERT(glb_policy->lb_call != NULL);
-      grpc_slice_unref(response_slice);
+      grpc_slice_unref_internal(exec_ctx, response_slice);
       if (grpc_lb_glb_trace) {
         gpr_log(GPR_INFO, "Serverlist with %lu servers received",
                 (unsigned long)serverlist->num_servers);
@@ -1265,7 +1287,7 @@ static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
     } else { /* serverlist == NULL */
       gpr_log(GPR_ERROR, "Invalid LB response received: '%s'. Ignoring.",
               grpc_dump_slice(response_slice, GPR_DUMP_ASCII | GPR_DUMP_HEX));
-      grpc_slice_unref(response_slice);
+      grpc_slice_unref_internal(exec_ctx, response_slice);
     }
 
     if (!glb_policy->shutting_down) {
@@ -1345,8 +1367,10 @@ static void lb_on_server_status_received(grpc_exec_ctx *exec_ctx, void *arg,
       }
     }
     GRPC_LB_POLICY_WEAK_REF(&glb_policy->base, "grpclb_retry_timer");
+    grpc_closure_init(&glb_policy->lb_on_call_retry, lb_call_on_retry_timer,
+                      glb_policy, grpc_schedule_on_exec_ctx);
     grpc_timer_init(exec_ctx, &glb_policy->lb_call_retry_timer, next_try,
-                    lb_call_on_retry_timer, glb_policy, now);
+                    &glb_policy->lb_on_call_retry, now);
   }
   gpr_mu_unlock(&glb_policy->mu);
   GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &glb_policy->base,
diff --git a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c
index afecb716fb0a405ea792a29e89bd4498284b8337..e352e0396f8f5de3abd72e0f2b66418599f1ee95 100644
--- a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c
+++ b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c
@@ -1,35 +1,3 @@
-/*
- *
- * Copyright 2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
 /* Automatically generated nanopb constant definitions */
 /* Generated by nanopb-0.3.7-dev */
 
diff --git a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h
index e36d0966f85aabc0a1fcf2864c23177ffc672625..725aa7e386f9384732df22e49811c12c37581a67 100644
--- a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h
+++ b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h
@@ -1,35 +1,3 @@
-/*
- *
- * Copyright 2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
 /* Automatically generated nanopb header */
 /* Generated by nanopb-0.3.7-dev */
 
diff --git a/src/core/ext/lb_policy/pick_first/pick_first.c b/src/core/ext/lb_policy/pick_first/pick_first.c
index c69f773e7828a509d4a9880ffcfaf13470f9683b..9f2aa461bedcdc84208b4b4214b5a25aa74de905 100644
--- a/src/core/ext/lb_policy/pick_first/pick_first.c
+++ b/src/core/ext/lb_policy/pick_first/pick_first.c
@@ -36,7 +36,9 @@
 #include <grpc/support/alloc.h>
 
 #include "src/core/ext/client_channel/lb_policy_registry.h"
+#include "src/core/ext/client_channel/subchannel.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/transport/connectivity_state.h"
 
 typedef struct pending_pick {
@@ -120,7 +122,7 @@ static void pf_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   while (pp != NULL) {
     pending_pick *next = pp->next;
     *pp->target = NULL;
-    grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
     gpr_free(pp);
     pp = next;
   }
@@ -138,9 +140,9 @@ static void pf_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if (pp->target == target) {
       *target = NULL;
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, pp->on_complete,
-          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1));
       gpr_free(pp);
     } else {
       pp->next = p->pending_picks;
@@ -165,9 +167,9 @@ static void pf_cancel_picks(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if ((pp->initial_metadata_flags & initial_metadata_flags_mask) ==
         initial_metadata_flags_eq) {
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, pp->on_complete,
-          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1));
       gpr_free(pp);
     } else {
       pp->next = p->pending_picks;
@@ -306,14 +308,15 @@ static void pf_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
         /* drop the pick list: we are connected now */
         GRPC_LB_POLICY_WEAK_REF(&p->base, "destroy_subchannels");
         gpr_atm_rel_store(&p->selected, (gpr_atm)selected);
-        grpc_exec_ctx_sched(exec_ctx,
-                            grpc_closure_create(destroy_subchannels, p),
-                            GRPC_ERROR_NONE, NULL);
+        grpc_closure_sched(exec_ctx,
+                           grpc_closure_create(destroy_subchannels, p,
+                                               grpc_schedule_on_exec_ctx),
+                           GRPC_ERROR_NONE);
         /* update any calls that were waiting for a pick */
         while ((pp = p->pending_picks)) {
           p->pending_picks = pp->next;
           *pp->target = GRPC_CONNECTED_SUBCHANNEL_REF(selected, "picked");
-          grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
+          grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
           gpr_free(pp);
         }
         grpc_connected_subchannel_notify_on_state_change(
@@ -366,8 +369,7 @@ static void pf_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
           while ((pp = p->pending_picks)) {
             p->pending_picks = pp->next;
             *pp->target = NULL;
-            grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE,
-                                NULL);
+            grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
             gpr_free(pp);
           }
           GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base,
@@ -419,8 +421,7 @@ static void pf_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
   if (selected) {
     grpc_connected_subchannel_ping(exec_ctx, selected, closure);
   } else {
-    grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_CREATE("Not connected"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_CREATE("Not connected"));
   }
 }
 
@@ -438,15 +439,10 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx,
                                          grpc_lb_policy_args *args) {
   GPR_ASSERT(args->client_channel_factory != NULL);
 
-  /* Get server name. */
-  const grpc_arg *arg =
-      grpc_channel_args_find(args->args, GRPC_ARG_SERVER_NAME);
-  const char *server_name =
-      arg != NULL && arg->type == GRPC_ARG_STRING ? arg->value.string : NULL;
-
   /* Find the number of backend addresses. We ignore balancer
    * addresses, since we don't know how to handle them. */
-  arg = grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
+  const grpc_arg *arg =
+      grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
   GPR_ASSERT(arg != NULL && arg->type == GRPC_ARG_POINTER);
   grpc_lb_addresses *addresses = arg->value.pointer.p;
   size_t num_addrs = 0;
@@ -472,14 +468,15 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx,
     }
 
     memset(&sc_args, 0, sizeof(grpc_subchannel_args));
-    /* server_name will be copied as part of the subchannel creation. This makes
-     * the copying of server_name (a borrowed pointer) OK. */
-    sc_args.server_name = server_name;
-    sc_args.addr = &addresses->addresses[i].address;
-    sc_args.args = args->args;
-
+    grpc_arg addr_arg =
+        grpc_create_subchannel_address_arg(&addresses->addresses[i].address);
+    grpc_channel_args *new_args =
+        grpc_channel_args_copy_and_add(args->args, &addr_arg, 1);
+    gpr_free(addr_arg.value.string);
+    sc_args.args = new_args;
     grpc_subchannel *subchannel = grpc_client_channel_factory_create_subchannel(
         exec_ctx, args->client_channel_factory, &sc_args);
+    grpc_channel_args_destroy(exec_ctx, new_args);
 
     if (subchannel != NULL) {
       p->subchannels[subchannel_idx++] = subchannel;
@@ -493,7 +490,8 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx,
   p->num_subchannels = subchannel_idx;
 
   grpc_lb_policy_init(&p->base, &pick_first_lb_policy_vtable);
-  grpc_closure_init(&p->connectivity_changed, pf_connectivity_changed, p);
+  grpc_closure_init(&p->connectivity_changed, pf_connectivity_changed, p,
+                    grpc_schedule_on_exec_ctx);
   gpr_mu_init(&p->mu);
   return &p->base;
 }
diff --git a/src/core/ext/lb_policy/round_robin/round_robin.c b/src/core/ext/lb_policy/round_robin/round_robin.c
index 59f84054c40739474b7cf5e9b498aaf016d90dbe..d17d8fa057a76a660d5a868455ef0f6d14558e54 100644
--- a/src/core/ext/lb_policy/round_robin/round_robin.c
+++ b/src/core/ext/lb_policy/round_robin/round_robin.c
@@ -64,8 +64,10 @@
 #include <grpc/support/alloc.h>
 
 #include "src/core/ext/client_channel/lb_policy_registry.h"
+#include "src/core/ext/client_channel/subchannel.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/transport/connectivity_state.h"
 #include "src/core/lib/transport/static_metadata.h"
 
@@ -284,7 +286,7 @@ static void rr_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
     GRPC_SUBCHANNEL_UNREF(exec_ctx, sd->subchannel, "rr_destroy");
     if (sd->user_data != NULL) {
       GPR_ASSERT(sd->user_data_vtable != NULL);
-      sd->user_data_vtable->destroy(sd->user_data);
+      sd->user_data_vtable->destroy(exec_ctx, sd->user_data);
     }
     gpr_free(sd);
   }
@@ -321,8 +323,8 @@ static void rr_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   while ((pp = p->pending_picks)) {
     p->pending_picks = pp->next;
     *pp->target = NULL;
-    grpc_exec_ctx_sched(exec_ctx, pp->on_complete,
-                        GRPC_ERROR_CREATE("Channel Shutdown"), NULL);
+    grpc_closure_sched(exec_ctx, pp->on_complete,
+                       GRPC_ERROR_CREATE("Channel Shutdown"));
     gpr_free(pp);
   }
   grpc_connectivity_state_set(
@@ -348,9 +350,9 @@ static void rr_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if (pp->target == target) {
       *target = NULL;
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, pp->on_complete,
-          GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1));
       gpr_free(pp);
     } else {
       pp->next = p->pending_picks;
@@ -376,9 +378,9 @@ static void rr_cancel_picks(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     if ((pp->initial_metadata_flags & initial_metadata_flags_mask) ==
         initial_metadata_flags_eq) {
       *pp->target = NULL;
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, pp->on_complete,
-          GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1));
       gpr_free(pp);
     } else {
       pp->next = p->pending_picks;
@@ -581,7 +583,7 @@ static void rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
                   "[RR CONN CHANGED] TARGET <-- SUBCHANNEL %p (NODE %p)",
                   (void *)selected->subchannel, (void *)selected);
         }
-        grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
+        grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
         gpr_free(pp);
       }
       update_lb_connectivity_status(exec_ctx, sd, error);
@@ -634,7 +636,7 @@ static void rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
         while ((pp = p->pending_picks)) {
           p->pending_picks = pp->next;
           *pp->target = NULL;
-          grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
+          grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
           gpr_free(pp);
         }
       }
@@ -684,8 +686,8 @@ static void rr_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     GRPC_CONNECTED_SUBCHANNEL_UNREF(exec_ctx, target, "rr_picked");
   } else {
     gpr_mu_unlock(&p->mu);
-    grpc_exec_ctx_sched(exec_ctx, closure,
-                        GRPC_ERROR_CREATE("Round Robin not connected"), NULL);
+    grpc_closure_sched(exec_ctx, closure,
+                       GRPC_ERROR_CREATE("Round Robin not connected"));
   }
 }
 
@@ -703,15 +705,10 @@ static grpc_lb_policy *round_robin_create(grpc_exec_ctx *exec_ctx,
                                           grpc_lb_policy_args *args) {
   GPR_ASSERT(args->client_channel_factory != NULL);
 
-  /* Get server name. */
-  const grpc_arg *arg =
-      grpc_channel_args_find(args->args, GRPC_ARG_SERVER_NAME);
-  const char *server_name =
-      arg != NULL && arg->type == GRPC_ARG_STRING ? arg->value.string : NULL;
-
   /* Find the number of backend addresses. We ignore balancer
    * addresses, since we don't know how to handle them. */
-  arg = grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
+  const grpc_arg *arg =
+      grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
   GPR_ASSERT(arg != NULL && arg->type == GRPC_ARG_POINTER);
   grpc_lb_addresses *addresses = arg->value.pointer.p;
   size_t num_addrs = 0;
@@ -734,14 +731,15 @@ static grpc_lb_policy *round_robin_create(grpc_exec_ctx *exec_ctx,
     if (addresses->addresses[i].is_balancer) continue;
 
     memset(&sc_args, 0, sizeof(grpc_subchannel_args));
-    /* server_name will be copied as part of the subchannel creation. This makes
-     * the copying of server_name (a borrowed pointer) OK. */
-    sc_args.server_name = server_name;
-    sc_args.addr = &addresses->addresses[i].address;
-    sc_args.args = args->args;
-
+    grpc_arg addr_arg =
+        grpc_create_subchannel_address_arg(&addresses->addresses[i].address);
+    grpc_channel_args *new_args =
+        grpc_channel_args_copy_and_add(args->args, &addr_arg, 1);
+    gpr_free(addr_arg.value.string);
+    sc_args.args = new_args;
     grpc_subchannel *subchannel = grpc_client_channel_factory_create_subchannel(
         exec_ctx, args->client_channel_factory, &sc_args);
+    grpc_channel_args_destroy(exec_ctx, new_args);
 
     if (subchannel != NULL) {
       subchannel_data *sd = gpr_malloc(sizeof(*sd));
@@ -757,7 +755,7 @@ static grpc_lb_policy *round_robin_create(grpc_exec_ctx *exec_ctx,
       }
       ++subchannel_idx;
       grpc_closure_init(&sd->connectivity_changed_closure,
-                        rr_connectivity_changed, sd);
+                        rr_connectivity_changed, sd, grpc_schedule_on_exec_ctx);
     }
   }
   if (subchannel_idx == 0) {
diff --git a/src/core/ext/load_reporting/load_reporting.c b/src/core/ext/load_reporting/load_reporting.c
index df1ea0ec9ac682cc66ec829ce769fffeeb12f32b..37b06a737fb025c755f3a8df98ac86453d286a34 100644
--- a/src/core/ext/load_reporting/load_reporting.c
+++ b/src/core/ext/load_reporting/load_reporting.c
@@ -53,7 +53,8 @@ static bool is_load_reporting_enabled(const grpc_channel_args *a) {
   return false;
 }
 
-static bool maybe_add_load_reporting_filter(grpc_channel_stack_builder *builder,
+static bool maybe_add_load_reporting_filter(grpc_exec_ctx *exec_ctx,
+                                            grpc_channel_stack_builder *builder,
                                             void *arg) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);
diff --git a/src/core/ext/load_reporting/load_reporting_filter.c b/src/core/ext/load_reporting/load_reporting_filter.c
index b810e20bb98d56e6e70034a95f99b6a4731346a3..07ef10e6a836b6ea250c73f9f3fc57ba9f95b111 100644
--- a/src/core/ext/load_reporting/load_reporting_filter.c
+++ b/src/core/ext/load_reporting/load_reporting_filter.c
@@ -68,7 +68,8 @@ typedef struct {
   grpc_exec_ctx *exec_ctx;
 } recv_md_filter_args;
 
-static grpc_mdelem *recv_md_filter(void *user_data, grpc_mdelem *md) {
+static grpc_mdelem *recv_md_filter(grpc_exec_ctx *exec_ctx, void *user_data,
+                                   grpc_mdelem *md) {
   recv_md_filter_args *a = user_data;
   grpc_call_element *elem = a->elem;
   call_data *calld = elem->call_data;
@@ -92,8 +93,8 @@ static void on_initial_md_ready(grpc_exec_ctx *exec_ctx, void *user_data,
     recv_md_filter_args a;
     a.elem = elem;
     a.exec_ctx = exec_ctx;
-    grpc_metadata_batch_filter(calld->recv_initial_metadata, recv_md_filter,
-                               &a);
+    grpc_metadata_batch_filter(exec_ctx, calld->recv_initial_metadata,
+                               recv_md_filter, &a);
     if (calld->service_method == NULL) {
       err =
           grpc_error_add_child(err, GRPC_ERROR_CREATE("Missing :path header"));
@@ -114,7 +115,8 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
   memset(calld, 0, sizeof(call_data));
 
   calld->id = (intptr_t)args->call_stack;
-  grpc_closure_init(&calld->on_initial_md_ready, on_initial_md_ready, elem);
+  grpc_closure_init(&calld->on_initial_md_ready, on_initial_md_ready, elem,
+                    grpc_schedule_on_exec_ctx);
 
   /* TODO(dgq): do something with the data
   channel_data *chand = elem->channel_data;
@@ -152,9 +154,9 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 }
 
 /* Constructor for channel_data */
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   GPR_ASSERT(!args->is_last);
 
   channel_data *chand = elem->channel_data;
@@ -171,6 +173,8 @@ static void init_channel_elem(grpc_exec_ctx *exec_ctx,
                                                 NULL,
                                                 NULL};
                                                 */
+
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel data */
@@ -189,7 +193,8 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   */
 }
 
-static grpc_mdelem *lr_trailing_md_filter(void *user_data, grpc_mdelem *md) {
+static grpc_mdelem *lr_trailing_md_filter(grpc_exec_ctx *exec_ctx,
+                                          void *user_data, grpc_mdelem *md) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
 
@@ -213,7 +218,7 @@ static void lr_start_transport_stream_op(grpc_exec_ctx *exec_ctx,
     calld->ops_recv_initial_metadata_ready = op->recv_initial_metadata_ready;
     op->recv_initial_metadata_ready = &calld->on_initial_md_ready;
   } else if (op->send_trailing_metadata) {
-    grpc_metadata_batch_filter(op->send_trailing_metadata,
+    grpc_metadata_batch_filter(exec_ctx, op->send_trailing_metadata,
                                lr_trailing_md_filter, elem);
   }
   grpc_call_next_op(exec_ctx, elem, op);
diff --git a/src/core/ext/resolver/README.md b/src/core/ext/resolver/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..b0e234e96a561460707c9afed27e80b92390862a
--- /dev/null
+++ b/src/core/ext/resolver/README.md
@@ -0,0 +1,4 @@
+# Resolver
+
+Implementations of various name resolution schemes.
+See the [naming spec](/doc/naming.md).
diff --git a/src/core/ext/resolver/dns/native/dns_resolver.c b/src/core/ext/resolver/dns/native/dns_resolver.c
index 15476f5792b4b0bb81283ed7a4cc186fe0d2b2b9..655d9dc586c2182631b4c2263522875538059f2f 100644
--- a/src/core/ext/resolver/dns/native/dns_resolver.c
+++ b/src/core/ext/resolver/dns/native/dns_resolver.c
@@ -61,6 +61,8 @@ typedef struct {
   char *default_port;
   /** channel args. */
   grpc_channel_args *channel_args;
+  /** pollset_set to drive the name resolution process */
+  grpc_pollset_set *interested_parties;
 
   /** mutex guarding the rest of the state */
   gpr_mu mu;
@@ -79,6 +81,7 @@ typedef struct {
   /** retry timer */
   bool have_retry_timer;
   grpc_timer retry_timer;
+  grpc_closure on_retry;
   /** retry backoff state */
   gpr_backoff backoff_state;
 
@@ -110,8 +113,8 @@ static void dns_shutdown(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver) {
   }
   if (r->next_completion != NULL) {
     *r->target_result = NULL;
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion,
-                        GRPC_ERROR_CREATE("Resolver Shutdown"), NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion,
+                       GRPC_ERROR_CREATE("Resolver Shutdown"));
     r->next_completion = NULL;
   }
   gpr_mu_unlock(&r->mu);
@@ -180,13 +183,13 @@ static void dns_on_resolved(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_arg new_arg = grpc_lb_addresses_create_channel_arg(addresses);
     result = grpc_channel_args_copy_and_add(r->channel_args, &new_arg, 1);
     grpc_resolved_addresses_destroy(r->addresses);
-    grpc_lb_addresses_destroy(addresses);
+    grpc_lb_addresses_destroy(exec_ctx, addresses);
   } else {
     gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
     gpr_timespec next_try = gpr_backoff_step(&r->backoff_state, now);
     gpr_timespec timeout = gpr_time_sub(next_try, now);
     const char *msg = grpc_error_string(error);
-    gpr_log(GPR_DEBUG, "dns resolution failed: %s", msg);
+    gpr_log(GPR_INFO, "dns resolution failed (will retry): %s", msg);
     grpc_error_free_string(msg);
     GPR_ASSERT(!r->have_retry_timer);
     r->have_retry_timer = true;
@@ -197,11 +200,12 @@ static void dns_on_resolved(grpc_exec_ctx *exec_ctx, void *arg,
     } else {
       gpr_log(GPR_DEBUG, "retrying immediately");
     }
-    grpc_timer_init(exec_ctx, &r->retry_timer, next_try, dns_on_retry_timer, r,
-                    now);
+    grpc_closure_init(&r->on_retry, dns_on_retry_timer, r,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(exec_ctx, &r->retry_timer, next_try, &r->on_retry, now);
   }
   if (r->resolved_result != NULL) {
-    grpc_channel_args_destroy(r->resolved_result);
+    grpc_channel_args_destroy(exec_ctx, r->resolved_result);
   }
   r->resolved_result = result;
   r->resolved_version++;
@@ -217,8 +221,10 @@ static void dns_start_resolving_locked(grpc_exec_ctx *exec_ctx,
   GPR_ASSERT(!r->resolving);
   r->resolving = true;
   r->addresses = NULL;
-  grpc_resolve_address(exec_ctx, r->name_to_resolve, r->default_port,
-                       grpc_closure_create(dns_on_resolved, r), &r->addresses);
+  grpc_resolve_address(
+      exec_ctx, r->name_to_resolve, r->default_port, r->interested_parties,
+      grpc_closure_create(dns_on_resolved, r, grpc_schedule_on_exec_ctx),
+      &r->addresses);
 }
 
 static void dns_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
@@ -228,7 +234,7 @@ static void dns_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
     *r->target_result = r->resolved_result == NULL
                             ? NULL
                             : grpc_channel_args_copy(r->resolved_result);
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
     r->published_version = r->resolved_version;
   }
@@ -238,15 +244,17 @@ static void dns_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) {
   dns_resolver *r = (dns_resolver *)gr;
   gpr_mu_destroy(&r->mu);
   if (r->resolved_result != NULL) {
-    grpc_channel_args_destroy(r->resolved_result);
+    grpc_channel_args_destroy(exec_ctx, r->resolved_result);
   }
+  grpc_pollset_set_destroy(r->interested_parties);
   gpr_free(r->name_to_resolve);
   gpr_free(r->default_port);
-  grpc_channel_args_destroy(r->channel_args);
+  grpc_channel_args_destroy(exec_ctx, r->channel_args);
   gpr_free(r);
 }
 
-static grpc_resolver *dns_create(grpc_resolver_args *args,
+static grpc_resolver *dns_create(grpc_exec_ctx *exec_ctx,
+                                 grpc_resolver_args *args,
                                  const char *default_port) {
   if (0 != strcmp(args->uri->authority, "")) {
     gpr_log(GPR_ERROR, "authority based dns uri's not supported");
@@ -264,12 +272,12 @@ static grpc_resolver *dns_create(grpc_resolver_args *args,
   grpc_resolver_init(&r->base, &dns_resolver_vtable);
   r->name_to_resolve = proxy_name == NULL ? gpr_strdup(path) : proxy_name;
   r->default_port = gpr_strdup(default_port);
-  grpc_arg server_name_arg;
-  server_name_arg.type = GRPC_ARG_STRING;
-  server_name_arg.key = GRPC_ARG_SERVER_NAME;
-  server_name_arg.value.string = (char *)path;
-  r->channel_args =
-      grpc_channel_args_copy_and_add(args->args, &server_name_arg, 1);
+  r->channel_args = grpc_channel_args_copy(args->args);
+  r->interested_parties = grpc_pollset_set_create();
+  if (args->pollset_set != NULL) {
+    grpc_pollset_set_add_pollset_set(exec_ctx, r->interested_parties,
+                                     args->pollset_set);
+  }
   gpr_backoff_init(&r->backoff_state, GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS,
                    GRPC_DNS_RECONNECT_BACKOFF_MULTIPLIER,
                    GRPC_DNS_RECONNECT_JITTER,
@@ -287,8 +295,9 @@ static void dns_factory_ref(grpc_resolver_factory *factory) {}
 static void dns_factory_unref(grpc_resolver_factory *factory) {}
 
 static grpc_resolver *dns_factory_create_resolver(
-    grpc_resolver_factory *factory, grpc_resolver_args *args) {
-  return dns_create(args, "https");
+    grpc_exec_ctx *exec_ctx, grpc_resolver_factory *factory,
+    grpc_resolver_args *args) {
+  return dns_create(exec_ctx, args, "https");
 }
 
 static char *dns_factory_get_default_host_name(grpc_resolver_factory *factory,
diff --git a/src/core/ext/resolver/sockaddr/sockaddr_resolver.c b/src/core/ext/resolver/sockaddr/sockaddr_resolver.c
index 26a650aaddeeceb8f3fea5b0dfc1b488545aa4c8..c146a627cb5b05b7de6b4d578407471541c20e7e 100644
--- a/src/core/ext/resolver/sockaddr/sockaddr_resolver.c
+++ b/src/core/ext/resolver/sockaddr/sockaddr_resolver.c
@@ -47,6 +47,7 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
@@ -89,7 +90,7 @@ static void sockaddr_shutdown(grpc_exec_ctx *exec_ctx,
   gpr_mu_lock(&r->mu);
   if (r->next_completion != NULL) {
     *r->target_result = NULL;
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
   }
   gpr_mu_unlock(&r->mu);
@@ -123,7 +124,7 @@ static void sockaddr_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
     grpc_arg arg = grpc_lb_addresses_create_channel_arg(r->addresses);
     *r->target_result =
         grpc_channel_args_copy_and_add(r->channel_args, &arg, 1);
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
   }
 }
@@ -131,8 +132,8 @@ static void sockaddr_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
 static void sockaddr_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) {
   sockaddr_resolver *r = (sockaddr_resolver *)gr;
   gpr_mu_destroy(&r->mu);
-  grpc_lb_addresses_destroy(r->addresses);
-  grpc_channel_args_destroy(r->channel_args);
+  grpc_lb_addresses_destroy(exec_ctx, r->addresses);
+  grpc_channel_args_destroy(exec_ctx, r->channel_args);
   gpr_free(r);
 }
 
@@ -161,7 +162,8 @@ char *unix_get_default_authority(grpc_resolver_factory *factory,
 
 static void do_nothing(void *ignored) {}
 
-static grpc_resolver *sockaddr_create(grpc_resolver_args *args,
+static grpc_resolver *sockaddr_create(grpc_exec_ctx *exec_ctx,
+                                      grpc_resolver_args *args,
                                       int parse(grpc_uri *uri,
                                                 grpc_resolved_address *dst)) {
   if (0 != strcmp(args->uri->authority, "")) {
@@ -188,22 +190,17 @@ static grpc_resolver *sockaddr_create(grpc_resolver_args *args,
     gpr_free(part_str);
     if (errors_found) break;
   }
-  grpc_slice_buffer_destroy(&path_parts);
-  grpc_slice_unref(path_slice);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &path_parts);
+  grpc_slice_unref_internal(exec_ctx, path_slice);
   if (errors_found) {
-    grpc_lb_addresses_destroy(addresses);
+    grpc_lb_addresses_destroy(exec_ctx, addresses);
     return NULL;
   }
   /* Instantiate resolver. */
   sockaddr_resolver *r = gpr_malloc(sizeof(sockaddr_resolver));
   memset(r, 0, sizeof(*r));
   r->addresses = addresses;
-  grpc_arg server_name_arg;
-  server_name_arg.type = GRPC_ARG_STRING;
-  server_name_arg.key = GRPC_ARG_SERVER_NAME;
-  server_name_arg.value.string = args->uri->path;
-  r->channel_args =
-      grpc_channel_args_copy_and_add(args->args, &server_name_arg, 1);
+  r->channel_args = grpc_channel_args_copy(args->args);
   gpr_mu_init(&r->mu);
   grpc_resolver_init(&r->base, &sockaddr_resolver_vtable);
   return &r->base;
@@ -219,8 +216,9 @@ static void sockaddr_factory_unref(grpc_resolver_factory *factory) {}
 
 #define DECL_FACTORY(name)                                                  \
   static grpc_resolver *name##_factory_create_resolver(                     \
-      grpc_resolver_factory *factory, grpc_resolver_args *args) {           \
-    return sockaddr_create(args, parse_##name);                             \
+      grpc_exec_ctx *exec_ctx, grpc_resolver_factory *factory,              \
+      grpc_resolver_args *args) {                                           \
+    return sockaddr_create(exec_ctx, args, parse_##name);                   \
   }                                                                         \
   static const grpc_resolver_factory_vtable name##_factory_vtable = {       \
       sockaddr_factory_ref, sockaddr_factory_unref,                         \
diff --git a/src/core/ext/transport/README.md b/src/core/ext/transport/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..2290568784d5e403257ddb9ed3ddcfcc1868dc87
--- /dev/null
+++ b/src/core/ext/transport/README.md
@@ -0,0 +1 @@
+Transports for gRPC
diff --git a/src/core/ext/transport/chttp2/README.md b/src/core/ext/transport/chttp2/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..8880a47460a13ae10bc8a562cb0cf829d57998af
--- /dev/null
+++ b/src/core/ext/transport/chttp2/README.md
@@ -0,0 +1 @@
+CHTTP2 - gRPC's implementation of a HTTP2 based transport
diff --git a/src/core/ext/transport/chttp2/client/chttp2_connector.c b/src/core/ext/transport/chttp2/client/chttp2_connector.c
index 58a6877b9b4b9aad4e615917bb17d835aef4e087..013c96dc703345a319404dac7470a5085cb6d98e 100644
--- a/src/core/ext/transport/chttp2/client/chttp2_connector.c
+++ b/src/core/ext/transport/chttp2/client/chttp2_connector.c
@@ -43,11 +43,13 @@
 
 #include "src/core/ext/client_channel/connector.h"
 #include "src/core/ext/client_channel/http_connect_handshaker.h"
+#include "src/core/ext/client_channel/subchannel.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/iomgr/tcp_client.h"
-#include "src/core/lib/security/transport/security_connector.h"
+#include "src/core/lib/slice/slice_internal.h"
 
 typedef struct {
   grpc_connector base;
@@ -58,10 +60,6 @@ typedef struct {
   bool shutdown;
   bool connecting;
 
-  char *server_name;
-  grpc_chttp2_add_handshakers_func add_handshakers;
-  void *add_handshakers_user_data;
-
   grpc_closure *notify;
   grpc_connect_in_args args;
   grpc_connect_out_args *result;
@@ -89,7 +87,6 @@ static void chttp2_connector_unref(grpc_exec_ctx *exec_ctx,
     // If handshaking is not yet in progress, destroy the endpoint.
     // Otherwise, the handshaker will do this for us.
     if (c->endpoint != NULL) grpc_endpoint_destroy(exec_ctx, c->endpoint);
-    gpr_free(c->server_name);
     gpr_free(c);
   }
 }
@@ -126,8 +123,8 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
       // point this can be removed.
       grpc_endpoint_shutdown(exec_ctx, args->endpoint);
       grpc_endpoint_destroy(exec_ctx, args->endpoint);
-      grpc_channel_args_destroy(args->args);
-      grpc_slice_buffer_destroy(args->read_buffer);
+      grpc_channel_args_destroy(exec_ctx, args->args);
+      grpc_slice_buffer_destroy_internal(exec_ctx, args->read_buffer);
       gpr_free(args->read_buffer);
     } else {
       error = GRPC_ERROR_REF(error);
@@ -143,7 +140,7 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
   }
   grpc_closure *notify = c->notify;
   c->notify = NULL;
-  grpc_exec_ctx_sched(exec_ctx, notify, error, NULL);
+  grpc_closure_sched(exec_ctx, notify, error);
   grpc_handshake_manager_destroy(exec_ctx, c->handshake_mgr);
   c->handshake_mgr = NULL;
   gpr_mu_unlock(&c->mu);
@@ -153,17 +150,8 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
 static void start_handshake_locked(grpc_exec_ctx *exec_ctx,
                                    chttp2_connector *c) {
   c->handshake_mgr = grpc_handshake_manager_create();
-  char *proxy_name = grpc_get_http_proxy_server();
-  if (proxy_name != NULL) {
-    grpc_handshake_manager_add(
-        c->handshake_mgr,
-        grpc_http_connect_handshaker_create(proxy_name, c->server_name));
-    gpr_free(proxy_name);
-  }
-  if (c->add_handshakers != NULL) {
-    c->add_handshakers(exec_ctx, c->add_handshakers_user_data,
+  grpc_handshakers_add(exec_ctx, HANDSHAKER_CLIENT, c->args.channel_args,
                        c->handshake_mgr);
-  }
   grpc_handshake_manager_do_handshake(
       exec_ctx, c->handshake_mgr, c->endpoint, c->args.channel_args,
       c->args.deadline, NULL /* acceptor */, on_handshake_done, c);
@@ -183,7 +171,7 @@ static void on_initial_connect_string_sent(grpc_exec_ctx *exec_ctx, void *arg,
     memset(c->result, 0, sizeof(*c->result));
     grpc_closure *notify = c->notify;
     c->notify = NULL;
-    grpc_exec_ctx_sched(exec_ctx, notify, error, NULL);
+    grpc_closure_sched(exec_ctx, notify, error);
     gpr_mu_unlock(&c->mu);
     chttp2_connector_unref(exec_ctx, arg);
   } else {
@@ -206,7 +194,7 @@ static void connected(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
     memset(c->result, 0, sizeof(*c->result));
     grpc_closure *notify = c->notify;
     c->notify = NULL;
-    grpc_exec_ctx_sched(exec_ctx, notify, error, NULL);
+    grpc_closure_sched(exec_ctx, notify, error);
     if (c->endpoint != NULL) grpc_endpoint_shutdown(exec_ctx, c->endpoint);
     gpr_mu_unlock(&c->mu);
     chttp2_connector_unref(exec_ctx, arg);
@@ -214,7 +202,7 @@ static void connected(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
     GPR_ASSERT(c->endpoint != NULL);
     if (!GRPC_SLICE_IS_EMPTY(c->args.initial_connect_string)) {
       grpc_closure_init(&c->initial_string_sent, on_initial_connect_string_sent,
-                        c);
+                        c, grpc_schedule_on_exec_ctx);
       grpc_slice_buffer_init(&c->initial_string_buffer);
       grpc_slice_buffer_add(&c->initial_string_buffer,
                             c->args.initial_connect_string);
@@ -233,6 +221,8 @@ static void chttp2_connector_connect(grpc_exec_ctx *exec_ctx,
                                      grpc_connect_out_args *result,
                                      grpc_closure *notify) {
   chttp2_connector *c = (chttp2_connector *)con;
+  grpc_resolved_address addr;
+  grpc_get_subchannel_address_arg(args->channel_args, &addr);
   gpr_mu_lock(&c->mu);
   GPR_ASSERT(c->notify == NULL);
   c->notify = notify;
@@ -240,12 +230,12 @@ static void chttp2_connector_connect(grpc_exec_ctx *exec_ctx,
   c->result = result;
   GPR_ASSERT(c->endpoint == NULL);
   chttp2_connector_ref(con);  // Ref taken for callback.
-  grpc_closure_init(&c->connected, connected, c);
+  grpc_closure_init(&c->connected, connected, c, grpc_schedule_on_exec_ctx);
   GPR_ASSERT(!c->connecting);
   c->connecting = true;
   grpc_tcp_client_connect(exec_ctx, &c->connected, &c->endpoint,
-                          args->interested_parties, args->channel_args,
-                          args->addr, args->deadline);
+                          args->interested_parties, args->channel_args, &addr,
+                          args->deadline);
   gpr_mu_unlock(&c->mu);
 }
 
@@ -253,17 +243,11 @@ static const grpc_connector_vtable chttp2_connector_vtable = {
     chttp2_connector_ref, chttp2_connector_unref, chttp2_connector_shutdown,
     chttp2_connector_connect};
 
-grpc_connector *grpc_chttp2_connector_create(
-    grpc_exec_ctx *exec_ctx, const char *server_name,
-    grpc_chttp2_add_handshakers_func add_handshakers,
-    void *add_handshakers_user_data) {
+grpc_connector *grpc_chttp2_connector_create() {
   chttp2_connector *c = gpr_malloc(sizeof(*c));
   memset(c, 0, sizeof(*c));
   c->base.vtable = &chttp2_connector_vtable;
   gpr_mu_init(&c->mu);
   gpr_ref_init(&c->refs, 1);
-  c->server_name = gpr_strdup(server_name);
-  c->add_handshakers = add_handshakers;
-  c->add_handshakers_user_data = add_handshakers_user_data;
   return &c->base;
 }
diff --git a/src/core/ext/transport/chttp2/client/chttp2_connector.h b/src/core/ext/transport/chttp2/client/chttp2_connector.h
index c57fb1a9a0d81d4dfdbd4f0b5fc30ab29fdee6a1..f5d10254320e4f2a1d7fd70f79efa8f2aabfddc8 100644
--- a/src/core/ext/transport/chttp2/client/chttp2_connector.h
+++ b/src/core/ext/transport/chttp2/client/chttp2_connector.h
@@ -35,18 +35,7 @@
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H
 
 #include "src/core/ext/client_channel/connector.h"
-#include "src/core/lib/channel/handshaker.h"
-#include "src/core/lib/iomgr/exec_ctx.h"
 
-typedef void (*grpc_chttp2_add_handshakers_func)(
-    grpc_exec_ctx* exec_ctx, void* user_data,
-    grpc_handshake_manager* handshake_mgr);
-
-/// If \a add_handshakers is non-NULL, it will be called with
-/// \a add_handshakers_user_data to add handshakers.
-grpc_connector* grpc_chttp2_connector_create(
-    grpc_exec_ctx* exec_ctx, const char* server_name,
-    grpc_chttp2_add_handshakers_func add_handshakers,
-    void* add_handshakers_user_data);
+grpc_connector* grpc_chttp2_connector_create();
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H */
diff --git a/src/core/ext/transport/chttp2/client/insecure/channel_create.c b/src/core/ext/transport/chttp2/client/insecure/channel_create.c
index 89501c59058bec8578903f256e615f5482c53253..c9f4021216e1eb5c60ae54f7d90be8f61464ad6f 100644
--- a/src/core/ext/transport/chttp2/client/insecure/channel_create.c
+++ b/src/core/ext/transport/chttp2/client/insecure/channel_create.c
@@ -39,8 +39,8 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/client_channel/client_channel.h"
-#include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/transport/chttp2/client/chttp2_connector.h"
+#include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/channel.h"
 
@@ -53,9 +53,7 @@ static void client_channel_factory_unref(
 static grpc_subchannel *client_channel_factory_create_subchannel(
     grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     const grpc_subchannel_args *args) {
-  grpc_connector *connector = grpc_chttp2_connector_create(
-      exec_ctx, args->server_name, NULL /* add_handshakers */,
-      NULL /* user_data */);
+  grpc_connector *connector = grpc_chttp2_connector_create();
   grpc_subchannel *s = grpc_subchannel_create(exec_ctx, connector, args);
   grpc_connector_unref(exec_ctx, connector);
   return s;
@@ -65,17 +63,15 @@ static grpc_channel *client_channel_factory_create_channel(
     grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     const char *target, grpc_client_channel_type type,
     const grpc_channel_args *args) {
-  grpc_channel *channel =
-      grpc_channel_create(exec_ctx, target, args, GRPC_CLIENT_CHANNEL, NULL);
-  grpc_resolver *resolver = grpc_resolver_create(target, args);
-  if (resolver == NULL) {
-    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, channel,
-                                "client_channel_factory_create_channel");
-    return NULL;
-  }
-  grpc_client_channel_finish_initialization(
-      exec_ctx, grpc_channel_get_channel_stack(channel), resolver, cc_factory);
-  GRPC_RESOLVER_UNREF(exec_ctx, resolver, "create_channel");
+  // Add channel arg containing the server URI.
+  grpc_arg arg;
+  arg.type = GRPC_ARG_STRING;
+  arg.key = GRPC_ARG_SERVER_URI;
+  arg.value.string = (char *)target;
+  grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1);
+  grpc_channel *channel = grpc_channel_create(exec_ctx, target, new_args,
+                                              GRPC_CLIENT_CHANNEL, NULL);
+  grpc_channel_args_destroy(exec_ctx, new_args);
   return channel;
 }
 
@@ -99,11 +95,16 @@ grpc_channel *grpc_insecure_channel_create(const char *target,
       "grpc_insecure_channel_create(target=%p, args=%p, reserved=%p)", 3,
       (target, args, reserved));
   GPR_ASSERT(reserved == NULL);
-  grpc_client_channel_factory *factory =
-      (grpc_client_channel_factory *)&client_channel_factory;
+  // Add channel arg containing the client channel factory.
+  grpc_arg arg =
+      grpc_client_channel_factory_create_channel_arg(&client_channel_factory);
+  grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1);
+  // Create channel.
   grpc_channel *channel = client_channel_factory_create_channel(
-      &exec_ctx, factory, target, GRPC_CLIENT_CHANNEL_TYPE_REGULAR, args);
-  grpc_client_channel_factory_unref(&exec_ctx, factory);
+      &exec_ctx, &client_channel_factory, target,
+      GRPC_CLIENT_CHANNEL_TYPE_REGULAR, new_args);
+  // Clean up.
+  grpc_channel_args_destroy(&exec_ctx, new_args);
   grpc_exec_ctx_finish(&exec_ctx);
   return channel != NULL ? channel : grpc_lame_client_channel_create(
                                          target, GRPC_STATUS_INTERNAL,
diff --git a/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c b/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c
index 1e5b1c22e39093d28b9b7c1892be4ca4a55e8106..f1069e2c576c49e0b726ed342f4c4016f196166d 100644
--- a/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c
+++ b/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c
@@ -74,7 +74,7 @@ grpc_channel *grpc_insecure_channel_create_from_fd(
   GPR_ASSERT(transport);
   grpc_channel *channel = grpc_channel_create(
       &exec_ctx, target, final_args, GRPC_CLIENT_DIRECT_CHANNEL, transport);
-  grpc_channel_args_destroy(final_args);
+  grpc_channel_args_destroy(&exec_ctx, final_args);
   grpc_chttp2_transport_start_reading(&exec_ctx, transport, NULL);
 
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/src/core/ext/transport/chttp2/client/secure/secure_channel_create.c b/src/core/ext/transport/chttp2/client/secure/secure_channel_create.c
index 4bce3ba25f8667a3e93c697f2f422c7839d9dbf3..f979d9bad5cd6d0f7b6b3995eb8678baed681185 100644
--- a/src/core/ext/transport/chttp2/client/secure/secure_channel_create.c
+++ b/src/core/ext/transport/chttp2/client/secure/secure_channel_create.c
@@ -39,7 +39,6 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/client_channel/client_channel.h"
-#include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/transport/chttp2/client/chttp2_connector.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/security/credentials/credentials.h"
@@ -47,40 +46,16 @@
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/channel.h"
 
-typedef struct {
-  grpc_client_channel_factory base;
-  gpr_refcount refs;
-  grpc_channel_security_connector *security_connector;
-} client_channel_factory;
-
 static void client_channel_factory_ref(
-    grpc_client_channel_factory *cc_factory) {
-  client_channel_factory *f = (client_channel_factory *)cc_factory;
-  gpr_ref(&f->refs);
-}
+    grpc_client_channel_factory *cc_factory) {}
 
 static void client_channel_factory_unref(
-    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory) {
-  client_channel_factory *f = (client_channel_factory *)cc_factory;
-  if (gpr_unref(&f->refs)) {
-    GRPC_SECURITY_CONNECTOR_UNREF(&f->security_connector->base,
-                                  "client_channel_factory");
-    gpr_free(f);
-  }
-}
-
-static void add_handshakers(grpc_exec_ctx *exec_ctx, void *security_connector,
-                            grpc_handshake_manager *handshake_mgr) {
-  grpc_channel_security_connector_add_handshakers(exec_ctx, security_connector,
-                                                  handshake_mgr);
-}
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory) {}
 
 static grpc_subchannel *client_channel_factory_create_subchannel(
     grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     const grpc_subchannel_args *args) {
-  client_channel_factory *f = (client_channel_factory *)cc_factory;
-  grpc_connector *connector = grpc_chttp2_connector_create(
-      exec_ctx, args->server_name, add_handshakers, f->security_connector);
+  grpc_connector *connector = grpc_chttp2_connector_create();
   grpc_subchannel *s = grpc_subchannel_create(exec_ctx, connector, args);
   grpc_connector_unref(exec_ctx, connector);
   return s;
@@ -90,18 +65,15 @@ static grpc_channel *client_channel_factory_create_channel(
     grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     const char *target, grpc_client_channel_type type,
     const grpc_channel_args *args) {
-  client_channel_factory *f = (client_channel_factory *)cc_factory;
-  grpc_channel *channel =
-      grpc_channel_create(exec_ctx, target, args, GRPC_CLIENT_CHANNEL, NULL);
-  grpc_resolver *resolver = grpc_resolver_create(target, args);
-  if (resolver == NULL) {
-    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, channel,
-                                "client_channel_factory_create_channel");
-    return NULL;
-  }
-  grpc_client_channel_finish_initialization(
-      exec_ctx, grpc_channel_get_channel_stack(channel), resolver, &f->base);
-  GRPC_RESOLVER_UNREF(exec_ctx, resolver, "create_channel");
+  // Add channel arg containing the server URI.
+  grpc_arg arg;
+  arg.type = GRPC_ARG_STRING;
+  arg.key = GRPC_ARG_SERVER_URI;
+  arg.value.string = (char *)target;
+  grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1);
+  grpc_channel *channel = grpc_channel_create(exec_ctx, target, new_args,
+                                              GRPC_CLIENT_CHANNEL, NULL);
+  grpc_channel_args_destroy(exec_ctx, new_args);
   return channel;
 }
 
@@ -110,6 +82,9 @@ static const grpc_client_channel_factory_vtable client_channel_factory_vtable =
      client_channel_factory_create_subchannel,
      client_channel_factory_create_channel};
 
+static grpc_client_channel_factory client_channel_factory = {
+    &client_channel_factory_vtable};
+
 /* Create a secure client channel:
    Asynchronously: - resolve target
                    - connect to it (trying alternatives as presented)
@@ -136,36 +111,32 @@ grpc_channel *grpc_secure_channel_create(grpc_channel_credentials *creds,
   grpc_channel_security_connector *security_connector;
   grpc_channel_args *new_args_from_connector;
   if (grpc_channel_credentials_create_security_connector(
-          creds, target, args, &security_connector, &new_args_from_connector) !=
-      GRPC_SECURITY_OK) {
+          &exec_ctx, creds, target, args, &security_connector,
+          &new_args_from_connector) != GRPC_SECURITY_OK) {
     grpc_exec_ctx_finish(&exec_ctx);
     return grpc_lame_client_channel_create(
         target, GRPC_STATUS_INTERNAL, "Failed to create security connector.");
   }
-  grpc_arg connector_arg =
-      grpc_security_connector_to_arg(&security_connector->base);
+  // Add channel args containing the client channel factory and security
+  // connector.
+  grpc_arg args_to_add[2];
+  args_to_add[0] =
+      grpc_client_channel_factory_create_channel_arg(&client_channel_factory);
+  args_to_add[1] = grpc_security_connector_to_arg(&security_connector->base);
   grpc_channel_args *new_args = grpc_channel_args_copy_and_add(
       new_args_from_connector != NULL ? new_args_from_connector : args,
-      &connector_arg, 1);
+      args_to_add, GPR_ARRAY_SIZE(args_to_add));
   if (new_args_from_connector != NULL) {
-    grpc_channel_args_destroy(new_args_from_connector);
+    grpc_channel_args_destroy(&exec_ctx, new_args_from_connector);
   }
-  // Create client channel factory.
-  client_channel_factory *f = gpr_malloc(sizeof(*f));
-  memset(f, 0, sizeof(*f));
-  f->base.vtable = &client_channel_factory_vtable;
-  gpr_ref_init(&f->refs, 1);
-  GRPC_SECURITY_CONNECTOR_REF(&security_connector->base,
-                              "grpc_secure_channel_create");
-  f->security_connector = security_connector;
   // Create channel.
   grpc_channel *channel = client_channel_factory_create_channel(
-      &exec_ctx, &f->base, target, GRPC_CLIENT_CHANNEL_TYPE_REGULAR, new_args);
+      &exec_ctx, &client_channel_factory, target,
+      GRPC_CLIENT_CHANNEL_TYPE_REGULAR, new_args);
   // Clean up.
-  GRPC_SECURITY_CONNECTOR_UNREF(&f->security_connector->base,
+  GRPC_SECURITY_CONNECTOR_UNREF(&exec_ctx, &security_connector->base,
                                 "secure_client_channel_factory_create_channel");
-  grpc_channel_args_destroy(new_args);
-  grpc_client_channel_factory_unref(&exec_ctx, &f->base);
+  grpc_channel_args_destroy(&exec_ctx, new_args);
   grpc_exec_ctx_finish(&exec_ctx);
   return channel; /* may be NULL */
 }
diff --git a/src/core/ext/transport/chttp2/server/chttp2_server.c b/src/core/ext/transport/chttp2/server/chttp2_server.c
index f0857714fc68b50ab0d4d182375d990264904843..574d1a7710195a4c58a0bbd71653755288df2372 100644
--- a/src/core/ext/transport/chttp2/server/chttp2_server.c
+++ b/src/core/ext/transport/chttp2/server/chttp2_server.c
@@ -46,31 +46,15 @@
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/channel/http_server_filter.h"
 #include "src/core/lib/iomgr/endpoint.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/server.h"
 
-void grpc_chttp2_server_handshaker_factory_add_handshakers(
-    grpc_exec_ctx *exec_ctx,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory,
-    grpc_handshake_manager *handshake_mgr) {
-  if (handshaker_factory != NULL) {
-    handshaker_factory->vtable->add_handshakers(exec_ctx, handshaker_factory,
-                                                handshake_mgr);
-  }
-}
-
-void grpc_chttp2_server_handshaker_factory_destroy(
-    grpc_exec_ctx *exec_ctx,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory) {
-  if (handshaker_factory != NULL) {
-    handshaker_factory->vtable->destroy(exec_ctx, handshaker_factory);
-  }
-}
-
 typedef struct pending_handshake_manager_node {
   grpc_handshake_manager *handshake_mgr;
   struct pending_handshake_manager_node *next;
@@ -80,7 +64,6 @@ typedef struct {
   grpc_server *server;
   grpc_tcp_server *tcp_server;
   grpc_channel_args *args;
-  grpc_chttp2_server_handshaker_factory *handshaker_factory;
   gpr_mu mu;
   bool shutdown;
   grpc_closure tcp_server_shutdown_complete;
@@ -148,8 +131,8 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
       // point this can be removed.
       grpc_endpoint_shutdown(exec_ctx, args->endpoint);
       grpc_endpoint_destroy(exec_ctx, args->endpoint);
-      grpc_channel_args_destroy(args->args);
-      grpc_slice_buffer_destroy(args->read_buffer);
+      grpc_channel_args_destroy(exec_ctx, args->args);
+      grpc_slice_buffer_destroy_internal(exec_ctx, args->read_buffer);
       gpr_free(args->read_buffer);
     }
   } else {
@@ -164,7 +147,7 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
           connection_state->accepting_pollset, args->args);
       grpc_chttp2_transport_start_reading(exec_ctx, transport,
                                           args->read_buffer);
-      grpc_channel_args_destroy(args->args);
+      grpc_channel_args_destroy(exec_ctx, args->args);
     }
   }
   pending_handshake_manager_remove_locked(connection_state->server_state,
@@ -197,8 +180,8 @@ static void on_accept(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
   connection_state->accepting_pollset = accepting_pollset;
   connection_state->acceptor = acceptor;
   connection_state->handshake_mgr = handshake_mgr;
-  grpc_chttp2_server_handshaker_factory_add_handshakers(
-      exec_ctx, state->handshaker_factory, connection_state->handshake_mgr);
+  grpc_handshakers_add(exec_ctx, HANDSHAKER_SERVER, state->args,
+                       connection_state->handshake_mgr);
   // TODO(roth): We should really get this timeout value from channel
   // args instead of hard-coding it.
   const gpr_timespec deadline = gpr_time_add(
@@ -232,13 +215,11 @@ static void tcp_server_shutdown_complete(grpc_exec_ctx *exec_ctx, void *arg,
   // Flush queued work before destroying handshaker factory, since that
   // may do a synchronous unref.
   grpc_exec_ctx_flush(exec_ctx);
-  grpc_chttp2_server_handshaker_factory_destroy(exec_ctx,
-                                                state->handshaker_factory);
   if (destroy_done != NULL) {
     destroy_done->cb(exec_ctx, destroy_done->cb_arg, GRPC_ERROR_REF(error));
     grpc_exec_ctx_flush(exec_ctx);
   }
-  grpc_channel_args_destroy(state->args);
+  grpc_channel_args_destroy(exec_ctx, state->args);
   gpr_mu_destroy(&state->mu);
   gpr_free(state);
 }
@@ -258,10 +239,10 @@ static void server_destroy_listener(grpc_exec_ctx *exec_ctx,
   grpc_tcp_server_unref(exec_ctx, tcp_server);
 }
 
-grpc_error *grpc_chttp2_server_add_port(
-    grpc_exec_ctx *exec_ctx, grpc_server *server, const char *addr,
-    grpc_channel_args *args,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory, int *port_num) {
+grpc_error *grpc_chttp2_server_add_port(grpc_exec_ctx *exec_ctx,
+                                        grpc_server *server, const char *addr,
+                                        grpc_channel_args *args,
+                                        int *port_num) {
   grpc_resolved_addresses *resolved = NULL;
   grpc_tcp_server *tcp_server = NULL;
   size_t i;
@@ -281,7 +262,8 @@ grpc_error *grpc_chttp2_server_add_port(
   state = gpr_malloc(sizeof(*state));
   memset(state, 0, sizeof(*state));
   grpc_closure_init(&state->tcp_server_shutdown_complete,
-                    tcp_server_shutdown_complete, state);
+                    tcp_server_shutdown_complete, state,
+                    grpc_schedule_on_exec_ctx);
   err = grpc_tcp_server_create(exec_ctx, &state->tcp_server_shutdown_complete,
                                args, &tcp_server);
   if (err != GRPC_ERROR_NONE) {
@@ -291,7 +273,6 @@ grpc_error *grpc_chttp2_server_add_port(
   state->server = server;
   state->tcp_server = tcp_server;
   state->args = args;
-  state->handshaker_factory = handshaker_factory;
   state->shutdown = true;
   gpr_mu_init(&state->mu);
 
@@ -345,8 +326,7 @@ error:
   if (tcp_server) {
     grpc_tcp_server_unref(exec_ctx, tcp_server);
   } else {
-    grpc_channel_args_destroy(args);
-    grpc_chttp2_server_handshaker_factory_destroy(exec_ctx, handshaker_factory);
+    grpc_channel_args_destroy(exec_ctx, args);
     gpr_free(state);
   }
   *port_num = 0;
diff --git a/src/core/ext/transport/chttp2/server/chttp2_server.h b/src/core/ext/transport/chttp2/server/chttp2_server.h
index aa364b565d655941485986fc3945a13573bc43b7..2581ebaae9673c429241517630015e7011abcfa4 100644
--- a/src/core/ext/transport/chttp2/server/chttp2_server.h
+++ b/src/core/ext/transport/chttp2/server/chttp2_server.h
@@ -36,43 +36,12 @@
 
 #include <grpc/impl/codegen/grpc_types.h>
 
-#include "src/core/lib/channel/handshaker.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 
-/// A server handshaker factory is used to create handshakers for server
-/// connections.
-typedef struct grpc_chttp2_server_handshaker_factory
-    grpc_chttp2_server_handshaker_factory;
-
-typedef struct {
-  void (*add_handshakers)(
-      grpc_exec_ctx *exec_ctx,
-      grpc_chttp2_server_handshaker_factory *handshaker_factory,
-      grpc_handshake_manager *handshake_mgr);
-  void (*destroy)(grpc_exec_ctx *exec_ctx,
-                  grpc_chttp2_server_handshaker_factory *handshaker_factory);
-} grpc_chttp2_server_handshaker_factory_vtable;
-
-struct grpc_chttp2_server_handshaker_factory {
-  const grpc_chttp2_server_handshaker_factory_vtable *vtable;
-};
-
-void grpc_chttp2_server_handshaker_factory_add_handshakers(
-    grpc_exec_ctx *exec_ctx,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory,
-    grpc_handshake_manager *handshake_mgr);
-
-void grpc_chttp2_server_handshaker_factory_destroy(
-    grpc_exec_ctx *exec_ctx,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory);
-
 /// Adds a port to \a server.  Sets \a port_num to the port number.
-/// If \a handshaker_factory is not NULL, it will be used to create
-/// handshakers for the port.
-/// Takes ownership of \a args and \a handshaker_factory.
-grpc_error *grpc_chttp2_server_add_port(
-    grpc_exec_ctx *exec_ctx, grpc_server *server, const char *addr,
-    grpc_channel_args *args,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory, int *port_num);
+/// Takes ownership of \a args.
+grpc_error *grpc_chttp2_server_add_port(grpc_exec_ctx *exec_ctx,
+                                        grpc_server *server, const char *addr,
+                                        grpc_channel_args *args, int *port_num);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_SERVER_CHTTP2_SERVER_H */
diff --git a/src/core/ext/transport/chttp2/server/insecure/server_chttp2.c b/src/core/ext/transport/chttp2/server/insecure/server_chttp2.c
index 7e286d4e46d51421bd8436007eff67881ca29e46..bf5026bea643c55bf2f2a49eae2aa32a78390109 100644
--- a/src/core/ext/transport/chttp2/server/insecure/server_chttp2.c
+++ b/src/core/ext/transport/chttp2/server/insecure/server_chttp2.c
@@ -47,8 +47,7 @@ int grpc_server_add_insecure_http2_port(grpc_server *server, const char *addr) {
                  (server, addr));
   grpc_error *err = grpc_chttp2_server_add_port(
       &exec_ctx, server, addr,
-      grpc_channel_args_copy(grpc_server_get_channel_args(server)),
-      NULL /* handshaker_factory */, &port_num);
+      grpc_channel_args_copy(grpc_server_get_channel_args(server)), &port_num);
   if (err != GRPC_ERROR_NONE) {
     const char *msg = grpc_error_string(err);
     gpr_log(GPR_ERROR, "%s", msg);
diff --git a/src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c b/src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c
index aa2ecf5743d9e349168e3ad89b402865552cde4a..f46e8499326d5a0ecea74368fa0fdc605581edf5 100644
--- a/src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c
+++ b/src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c
@@ -62,7 +62,7 @@ void grpc_server_add_insecure_channel_from_fd(grpc_server *server,
   grpc_endpoint *server_endpoint =
       grpc_tcp_create(grpc_fd_create(fd, name), resource_quota,
                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE, name);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
 
   gpr_free(name);
 
diff --git a/src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c b/src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c
index a33a7a3f7df8e6683cc749a5e02f1659366c707d..395c79a71d13af47df569e8218cae30b0ba253e0 100644
--- a/src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c
+++ b/src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c
@@ -49,34 +49,6 @@
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/server.h"
 
-typedef struct {
-  grpc_chttp2_server_handshaker_factory base;
-  grpc_server_security_connector *security_connector;
-} server_security_handshaker_factory;
-
-static void server_security_handshaker_factory_add_handshakers(
-    grpc_exec_ctx *exec_ctx, grpc_chttp2_server_handshaker_factory *hf,
-    grpc_handshake_manager *handshake_mgr) {
-  server_security_handshaker_factory *handshaker_factory =
-      (server_security_handshaker_factory *)hf;
-  grpc_server_security_connector_add_handshakers(
-      exec_ctx, handshaker_factory->security_connector, handshake_mgr);
-}
-
-static void server_security_handshaker_factory_destroy(
-    grpc_exec_ctx *exec_ctx, grpc_chttp2_server_handshaker_factory *hf) {
-  server_security_handshaker_factory *handshaker_factory =
-      (server_security_handshaker_factory *)hf;
-  GRPC_SECURITY_CONNECTOR_UNREF(&handshaker_factory->security_connector->base,
-                                "server");
-  gpr_free(hf);
-}
-
-static const grpc_chttp2_server_handshaker_factory_vtable
-    server_security_handshaker_factory_vtable = {
-        server_security_handshaker_factory_add_handshakers,
-        server_security_handshaker_factory_destroy};
-
 int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
                                       grpc_server_credentials *creds) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
@@ -94,7 +66,7 @@ int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
     goto done;
   }
   grpc_security_status status =
-      grpc_server_credentials_create_security_connector(creds, &sc);
+      grpc_server_credentials_create_security_connector(&exec_ctx, creds, &sc);
   if (status != GRPC_SECURITY_OK) {
     char *msg;
     gpr_asprintf(&msg,
@@ -105,20 +77,19 @@ int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
     gpr_free(msg);
     goto done;
   }
-  // Create handshaker factory.
-  server_security_handshaker_factory *handshaker_factory =
-      gpr_malloc(sizeof(*handshaker_factory));
-  memset(handshaker_factory, 0, sizeof(*handshaker_factory));
-  handshaker_factory->base.vtable = &server_security_handshaker_factory_vtable;
-  handshaker_factory->security_connector = sc;
   // Create channel args.
-  grpc_arg channel_arg = grpc_server_credentials_to_arg(creds);
-  grpc_channel_args *args = grpc_channel_args_copy_and_add(
-      grpc_server_get_channel_args(server), &channel_arg, 1);
+  grpc_arg args_to_add[2];
+  args_to_add[0] = grpc_server_credentials_to_arg(creds);
+  args_to_add[1] = grpc_security_connector_to_arg(&sc->base);
+  grpc_channel_args *args =
+      grpc_channel_args_copy_and_add(grpc_server_get_channel_args(server),
+                                     args_to_add, GPR_ARRAY_SIZE(args_to_add));
   // Add server port.
-  err = grpc_chttp2_server_add_port(&exec_ctx, server, addr, args,
-                                    &handshaker_factory->base, &port_num);
+  err = grpc_chttp2_server_add_port(&exec_ctx, server, addr, args, &port_num);
 done:
+  if (sc != NULL) {
+    GRPC_SECURITY_CONNECTOR_UNREF(&exec_ctx, &sc->base, "server");
+  }
   grpc_exec_ctx_finish(&exec_ctx);
   if (err != GRPC_ERROR_NONE) {
     const char *msg = grpc_error_string(err);
diff --git a/src/core/ext/transport/chttp2/transport/bin_decoder.c b/src/core/ext/transport/chttp2/transport/bin_decoder.c
index 3eef80b5575c7c149d0771c45b2e0508d5294d1f..8db36e4a7f0d9eee6a704d5a9bae03804aa39c73 100644
--- a/src/core/ext/transport/chttp2/transport/bin_decoder.c
+++ b/src/core/ext/transport/chttp2/transport/bin_decoder.c
@@ -34,6 +34,7 @@
 #include "src/core/ext/transport/chttp2/transport/bin_decoder.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
@@ -143,7 +144,8 @@ bool grpc_base64_decode_partial(struct grpc_base64_decode_context *ctx) {
   return true;
 }
 
-grpc_slice grpc_chttp2_base64_decode(grpc_slice input) {
+grpc_slice grpc_chttp2_base64_decode(grpc_exec_ctx *exec_ctx,
+                                     grpc_slice input) {
   size_t input_length = GRPC_SLICE_LENGTH(input);
   size_t output_length = input_length / 4 * 3;
   struct grpc_base64_decode_context ctx;
@@ -179,7 +181,7 @@ grpc_slice grpc_chttp2_base64_decode(grpc_slice input) {
     char *s = grpc_dump_slice(input, GPR_DUMP_ASCII);
     gpr_log(GPR_ERROR, "Base64 decoding failed, input string:\n%s\n", s);
     gpr_free(s);
-    grpc_slice_unref(output);
+    grpc_slice_unref_internal(exec_ctx, output);
     return gpr_empty_slice();
   }
   GPR_ASSERT(ctx.output_cur == GRPC_SLICE_END_PTR(output));
@@ -187,7 +189,8 @@ grpc_slice grpc_chttp2_base64_decode(grpc_slice input) {
   return output;
 }
 
-grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
+grpc_slice grpc_chttp2_base64_decode_with_length(grpc_exec_ctx *exec_ctx,
+                                                 grpc_slice input,
                                                  size_t output_length) {
   size_t input_length = GRPC_SLICE_LENGTH(input);
   grpc_slice output = grpc_slice_malloc(output_length);
@@ -200,7 +203,7 @@ grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
             "grpc_chttp2_base64_decode_with_length has a length of %d, which "
             "has a tail of 1 byte.\n",
             (int)input_length);
-    grpc_slice_unref(output);
+    grpc_slice_unref_internal(exec_ctx, output);
     return gpr_empty_slice();
   }
 
@@ -210,7 +213,7 @@ grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
             "than the max possible output length %d.\n",
             (int)output_length,
             (int)(input_length / 4 * 3 + tail_xtra[input_length % 4]));
-    grpc_slice_unref(output);
+    grpc_slice_unref_internal(exec_ctx, output);
     return gpr_empty_slice();
   }
 
@@ -224,7 +227,7 @@ grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
     char *s = grpc_dump_slice(input, GPR_DUMP_ASCII);
     gpr_log(GPR_ERROR, "Base64 decoding failed, input string:\n%s\n", s);
     gpr_free(s);
-    grpc_slice_unref(output);
+    grpc_slice_unref_internal(exec_ctx, output);
     return gpr_empty_slice();
   }
   GPR_ASSERT(ctx.output_cur == GRPC_SLICE_END_PTR(output));
diff --git a/src/core/ext/transport/chttp2/transport/bin_decoder.h b/src/core/ext/transport/chttp2/transport/bin_decoder.h
index 83a90be519aa4c7a24cf58cdc3db05ef995f3c8f..48ffb2ae3b3b721ea23fdeb99f861d594d30ebe8 100644
--- a/src/core/ext/transport/chttp2/transport/bin_decoder.h
+++ b/src/core/ext/transport/chttp2/transport/bin_decoder.h
@@ -55,12 +55,13 @@ bool grpc_base64_decode_partial(struct grpc_base64_decode_context *ctx);
 
 /* base64 decode a slice with pad chars. Returns a new slice, does not take
    ownership of the input. Returns an empty slice if decoding is failed. */
-grpc_slice grpc_chttp2_base64_decode(grpc_slice input);
+grpc_slice grpc_chttp2_base64_decode(grpc_exec_ctx *exec_ctx, grpc_slice input);
 
 /* base64 decode a slice without pad chars, data length is needed. Returns a new
    slice, does not take ownership of the input. Returns an empty slice if
    decoding is failed. */
-grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
+grpc_slice grpc_chttp2_base64_decode_with_length(grpc_exec_ctx *exec_ctx,
+                                                 grpc_slice input,
                                                  size_t output_length);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H */
diff --git a/src/core/ext/transport/chttp2/transport/bin_encoder.h b/src/core/ext/transport/chttp2/transport/bin_encoder.h
index 9e143b46e20d0ef83b8cc019588269f33307e5c5..477559d0e2508fe130678d0e415a7f2d74bbe61b 100644
--- a/src/core/ext/transport/chttp2/transport/bin_encoder.h
+++ b/src/core/ext/transport/chttp2/transport/bin_encoder.h
@@ -47,7 +47,7 @@ grpc_slice grpc_chttp2_huffman_compress(grpc_slice input);
 /* equivalent to:
    grpc_slice x = grpc_chttp2_base64_encode(input);
    grpc_slice y = grpc_chttp2_huffman_compress(x);
-   grpc_slice_unref(x);
+   grpc_slice_unref_internal(exec_ctx, x);
    return y; */
 grpc_slice grpc_chttp2_base64_encode_and_huffman_compress_impl(
     grpc_slice input);
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.c b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
index 6bc054866b13d7841af31fc08277f1a9693e1f47..68a6a2155ddea329a154aa832310a4b8e37c6309 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.c
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
@@ -47,10 +47,12 @@
 #include "src/core/ext/transport/chttp2/transport/http2_errors.h"
 #include "src/core/ext/transport/chttp2/transport/internal.h"
 #include "src/core/ext/transport/chttp2/transport/status_conversion.h"
+#include "src/core/ext/transport/chttp2/transport/varint.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/workqueue.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
@@ -60,7 +62,7 @@
 #define DEFAULT_WINDOW 65535
 #define DEFAULT_CONNECTION_WINDOW_TARGET (1024 * 1024)
 #define MAX_WINDOW 0x7fffffffu
-
+#define MAX_WRITE_BUFFER_SIZE (64 * 1024 * 1024)
 #define DEFAULT_MAX_HEADER_LIST_SIZE (16 * 1024)
 
 #define MAX_CLIENT_STREAM_ID 0x7fffffffu
@@ -73,20 +75,14 @@ static const grpc_transport_vtable vtable;
 static void write_action_begin_locked(grpc_exec_ctx *exec_ctx, void *t,
                                       grpc_error *error);
 static void write_action(grpc_exec_ctx *exec_ctx, void *t, grpc_error *error);
-static void write_action_end(grpc_exec_ctx *exec_ctx, void *t,
-                             grpc_error *error);
 static void write_action_end_locked(grpc_exec_ctx *exec_ctx, void *t,
                                     grpc_error *error);
 
-static void read_action_begin(grpc_exec_ctx *exec_ctx, void *t,
-                              grpc_error *error);
 static void read_action_locked(grpc_exec_ctx *exec_ctx, void *t,
                                grpc_error *error);
 
 static void complete_fetch_locked(grpc_exec_ctx *exec_ctx, void *gs,
                                   grpc_error *error);
-static void complete_fetch(grpc_exec_ctx *exec_ctx, void *gs,
-                           grpc_error *error);
 /** Set a transport level setting, and push it to our peer */
 static void push_setting(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                          grpc_chttp2_setting_id id, uint32_t value);
@@ -112,12 +108,8 @@ static void incoming_byte_stream_destroy_locked(grpc_exec_ctx *exec_ctx,
                                                 void *byte_stream,
                                                 grpc_error *error_ignored);
 
-static void benign_reclaimer(grpc_exec_ctx *exec_ctx, void *t,
-                             grpc_error *error);
 static void benign_reclaimer_locked(grpc_exec_ctx *exec_ctx, void *t,
                                     grpc_error *error);
-static void destructive_reclaimer(grpc_exec_ctx *exec_ctx, void *t,
-                                  grpc_error *error);
 static void destructive_reclaimer_locked(grpc_exec_ctx *exec_ctx, void *t,
                                          grpc_error *error);
 
@@ -141,13 +133,13 @@ static void destruct_transport(grpc_exec_ctx *exec_ctx,
 
   grpc_endpoint_destroy(exec_ctx, t->ep);
 
-  grpc_slice_buffer_destroy(&t->qbuf);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &t->qbuf);
 
-  grpc_slice_buffer_destroy(&t->outbuf);
-  grpc_chttp2_hpack_compressor_destroy(&t->hpack_compressor);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &t->outbuf);
+  grpc_chttp2_hpack_compressor_destroy(exec_ctx, &t->hpack_compressor);
 
-  grpc_slice_buffer_destroy(&t->read_buffer);
-  grpc_chttp2_hpack_parser_destroy(&t->hpack_parser);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &t->read_buffer);
+  grpc_chttp2_hpack_parser_destroy(exec_ctx, &t->hpack_parser);
   grpc_chttp2_goaway_parser_destroy(&t->goaway_parser);
 
   for (i = 0; i < STREAM_LIST_COUNT; i++) {
@@ -166,8 +158,8 @@ static void destruct_transport(grpc_exec_ctx *exec_ctx,
      and maybe they hold resources that need to be freed */
   while (t->pings.next != &t->pings) {
     grpc_chttp2_outstanding_ping *ping = t->pings.next;
-    grpc_exec_ctx_sched(exec_ctx, ping->on_recv,
-                        GRPC_ERROR_CREATE("Transport closed"), NULL);
+    grpc_closure_sched(exec_ctx, ping->on_recv,
+                       GRPC_ERROR_CREATE("Transport closed"));
     ping->next->prev = ping->prev;
     ping->prev->next = ping->next;
     gpr_free(ping);
@@ -246,21 +238,18 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   grpc_slice_buffer_init(&t->outbuf);
   grpc_chttp2_hpack_compressor_init(&t->hpack_compressor);
 
-  grpc_closure_init(&t->write_action_begin_locked, write_action_begin_locked,
-                    t);
-  grpc_closure_init(&t->write_action, write_action, t);
-  grpc_closure_init(&t->write_action_end, write_action_end, t);
-  grpc_closure_init(&t->write_action_end_locked, write_action_end_locked, t);
-  grpc_closure_init(&t->read_action_begin, read_action_begin, t);
-  grpc_closure_init(&t->read_action_locked, read_action_locked, t);
-  grpc_closure_init(&t->benign_reclaimer, benign_reclaimer, t);
-  grpc_closure_init(&t->destructive_reclaimer, destructive_reclaimer, t);
-  grpc_closure_init(&t->benign_reclaimer_locked, benign_reclaimer_locked, t);
+  grpc_closure_init(&t->write_action, write_action, t,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&t->read_action_locked, read_action_locked, t,
+                    grpc_combiner_scheduler(t->combiner, false));
+  grpc_closure_init(&t->benign_reclaimer_locked, benign_reclaimer_locked, t,
+                    grpc_combiner_scheduler(t->combiner, false));
   grpc_closure_init(&t->destructive_reclaimer_locked,
-                    destructive_reclaimer_locked, t);
+                    destructive_reclaimer_locked, t,
+                    grpc_combiner_scheduler(t->combiner, false));
 
   grpc_chttp2_goaway_parser_init(&t->goaway_parser);
-  grpc_chttp2_hpack_parser_init(&t->hpack_parser);
+  grpc_chttp2_hpack_parser_init(exec_ctx, &t->hpack_parser);
 
   grpc_slice_buffer_init(&t->read_buffer);
 
@@ -282,6 +271,7 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
      window -- this should by rights be 0 */
   t->force_send_settings = 1 << GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE;
   t->sent_local_settings = 0;
+  t->write_buffer_size = DEFAULT_WINDOW;
 
   if (is_client) {
     grpc_slice_buffer_add(&t->outbuf, grpc_slice_from_copied_string(
@@ -332,6 +322,11 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
           grpc_chttp2_hpack_compressor_set_max_usable_size(&t->hpack_compressor,
                                                            (uint32_t)value);
         }
+      } else if (0 == strcmp(channel_args->args[i].key,
+                             GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE)) {
+        t->write_buffer_size = (uint32_t)grpc_channel_arg_get_integer(
+            &channel_args->args[i],
+            (grpc_integer_options){0, 0, MAX_WRITE_BUFFER_SIZE});
       } else {
         static const struct {
           const char *channel_arg_name;
@@ -395,9 +390,10 @@ static void destroy_transport_locked(grpc_exec_ctx *exec_ctx, void *tp,
 
 static void destroy_transport(grpc_exec_ctx *exec_ctx, grpc_transport *gt) {
   grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt;
-  grpc_combiner_execute(exec_ctx, t->combiner,
-                        grpc_closure_create(destroy_transport_locked, t),
-                        GRPC_ERROR_NONE, false);
+  grpc_closure_sched(exec_ctx, grpc_closure_create(
+                                   destroy_transport_locked, t,
+                                   grpc_combiner_scheduler(t->combiner, false)),
+                     GRPC_ERROR_NONE);
 }
 
 static void close_transport_locked(grpc_exec_ctx *exec_ctx,
@@ -471,8 +467,8 @@ static int init_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
   grpc_chttp2_data_parser_init(&s->data_parser);
   grpc_slice_buffer_init(&s->flow_controlled_buffer);
   s->deadline = gpr_inf_future(GPR_CLOCK_MONOTONIC);
-  grpc_closure_init(&s->complete_fetch, complete_fetch, s);
-  grpc_closure_init(&s->complete_fetch_locked, complete_fetch_locked, s);
+  grpc_closure_init(&s->complete_fetch_locked, complete_fetch_locked, s,
+                    grpc_schedule_on_exec_ctx);
 
   GRPC_CHTTP2_REF_TRANSPORT(t, "stream");
 
@@ -527,9 +523,11 @@ static void destroy_stream_locked(grpc_exec_ctx *exec_ctx, void *sp,
   GPR_ASSERT(s->recv_message_ready == NULL);
   GPR_ASSERT(s->recv_trailing_metadata_finished == NULL);
   grpc_chttp2_data_parser_destroy(exec_ctx, &s->data_parser);
-  grpc_chttp2_incoming_metadata_buffer_destroy(&s->metadata_buffer[0]);
-  grpc_chttp2_incoming_metadata_buffer_destroy(&s->metadata_buffer[1]);
-  grpc_slice_buffer_destroy(&s->flow_controlled_buffer);
+  grpc_chttp2_incoming_metadata_buffer_destroy(exec_ctx,
+                                               &s->metadata_buffer[0]);
+  grpc_chttp2_incoming_metadata_buffer_destroy(exec_ctx,
+                                               &s->metadata_buffer[1]);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &s->flow_controlled_buffer);
   GRPC_ERROR_UNREF(s->read_closed_error);
   GRPC_ERROR_UNREF(s->write_closed_error);
 
@@ -547,9 +545,10 @@ static void destroy_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
   grpc_chttp2_stream *s = (grpc_chttp2_stream *)gs;
 
   s->destroy_stream_arg = and_free_memory;
-  grpc_closure_init(&s->destroy_stream, destroy_stream_locked, s);
-  grpc_combiner_execute(exec_ctx, t->combiner, &s->destroy_stream,
-                        GRPC_ERROR_NONE, false);
+  grpc_closure_sched(
+      exec_ctx, grpc_closure_init(&s->destroy_stream, destroy_stream_locked, s,
+                                  grpc_combiner_scheduler(t->combiner, false)),
+      GRPC_ERROR_NONE);
   GPR_TIMER_END("destroy_stream", 0);
 }
 
@@ -600,7 +599,7 @@ static void set_write_state(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                                  write_state_name(st), reason));
   t->write_state = st;
   if (st == GRPC_CHTTP2_WRITE_STATE_IDLE) {
-    grpc_exec_ctx_enqueue_list(exec_ctx, &t->run_after_write, NULL);
+    grpc_closure_list_sched(exec_ctx, &t->run_after_write);
     if (t->close_transport_on_writes_finished != NULL) {
       grpc_error *err = t->close_transport_on_writes_finished;
       t->close_transport_on_writes_finished = NULL;
@@ -618,9 +617,12 @@ void grpc_chttp2_initiate_write(grpc_exec_ctx *exec_ctx,
     case GRPC_CHTTP2_WRITE_STATE_IDLE:
       set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING, reason);
       GRPC_CHTTP2_REF_TRANSPORT(t, "writing");
-      grpc_combiner_execute_finally(exec_ctx, t->combiner,
-                                    &t->write_action_begin_locked,
-                                    GRPC_ERROR_NONE, covered_by_poller);
+      grpc_closure_sched(
+          exec_ctx,
+          grpc_closure_init(
+              &t->write_action_begin_locked, write_action_begin_locked, t,
+              grpc_combiner_finally_scheduler(t->combiner, covered_by_poller)),
+          GRPC_ERROR_NONE);
       break;
     case GRPC_CHTTP2_WRITE_STATE_WRITING:
       set_write_state(
@@ -662,7 +664,7 @@ static void write_action_begin_locked(grpc_exec_ctx *exec_ctx, void *gt,
   if (!t->closed && grpc_chttp2_begin_write(exec_ctx, t)) {
     set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING,
                     "begin writing");
-    grpc_exec_ctx_sched(exec_ctx, &t->write_action, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, &t->write_action, GRPC_ERROR_NONE);
   } else {
     set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_IDLE,
                     "begin writing nothing");
@@ -674,19 +676,13 @@ static void write_action_begin_locked(grpc_exec_ctx *exec_ctx, void *gt,
 static void write_action(grpc_exec_ctx *exec_ctx, void *gt, grpc_error *error) {
   grpc_chttp2_transport *t = gt;
   GPR_TIMER_BEGIN("write_action", 0);
-  grpc_endpoint_write(exec_ctx, t->ep, &t->outbuf, &t->write_action_end);
+  grpc_endpoint_write(
+      exec_ctx, t->ep, &t->outbuf,
+      grpc_closure_init(&t->write_action_end_locked, write_action_end_locked, t,
+                        grpc_combiner_scheduler(t->combiner, false)));
   GPR_TIMER_END("write_action", 0);
 }
 
-static void write_action_end(grpc_exec_ctx *exec_ctx, void *gt,
-                             grpc_error *error) {
-  grpc_chttp2_transport *t = gt;
-  GPR_TIMER_BEGIN("write_action_end", 0);
-  grpc_combiner_execute(exec_ctx, t->combiner, &t->write_action_end_locked,
-                        GRPC_ERROR_REF(error), false);
-  GPR_TIMER_END("write_action_end", 0);
-}
-
 static void write_action_end_locked(grpc_exec_ctx *exec_ctx, void *tp,
                                     grpc_error *error) {
   GPR_TIMER_BEGIN("terminate_writing_with_lock", 0);
@@ -716,18 +712,24 @@ static void write_action_end_locked(grpc_exec_ctx *exec_ctx, void *tp,
       set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING,
                       "continue writing [!covered]");
       GRPC_CHTTP2_REF_TRANSPORT(t, "writing");
-      grpc_combiner_execute_finally(exec_ctx, t->combiner,
-                                    &t->write_action_begin_locked,
-                                    GRPC_ERROR_NONE, false);
+      grpc_closure_run(
+          exec_ctx,
+          grpc_closure_init(
+              &t->write_action_begin_locked, write_action_begin_locked, t,
+              grpc_combiner_finally_scheduler(t->combiner, false)),
+          GRPC_ERROR_NONE);
       break;
     case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE_AND_COVERED_BY_POLLER:
       GPR_TIMER_MARK("state=writing_stale_with_poller", 0);
       set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING,
                       "continue writing [covered]");
       GRPC_CHTTP2_REF_TRANSPORT(t, "writing");
-      grpc_combiner_execute_finally(exec_ctx, t->combiner,
-                                    &t->write_action_begin_locked,
-                                    GRPC_ERROR_NONE, true);
+      grpc_closure_run(
+          exec_ctx,
+          grpc_closure_init(&t->write_action_begin_locked,
+                            write_action_begin_locked, t,
+                            grpc_combiner_finally_scheduler(t->combiner, true)),
+          GRPC_ERROR_NONE);
       break;
   }
 
@@ -760,7 +762,7 @@ void grpc_chttp2_add_incoming_goaway(grpc_exec_ctx *exec_ctx,
   char *msg = grpc_dump_slice(goaway_text, GPR_DUMP_HEX | GPR_DUMP_ASCII);
   GRPC_CHTTP2_IF_TRACING(
       gpr_log(GPR_DEBUG, "got goaway [%d]: %s", goaway_error, msg));
-  grpc_slice_unref(goaway_text);
+  grpc_slice_unref_internal(exec_ctx, goaway_text);
   t->seen_goaway = 1;
   /* lie: use transient failure from the transport to indicate goaway has been
    * received */
@@ -903,15 +905,22 @@ static bool contains_non_ok_status(grpc_metadata_batch *batch) {
   return false;
 }
 
+static void maybe_become_writable_due_to_send_msg(grpc_exec_ctx *exec_ctx,
+                                                  grpc_chttp2_transport *t,
+                                                  grpc_chttp2_stream *s) {
+  if (s->id != 0 && (!s->write_buffering ||
+                     s->flow_controlled_buffer.length > t->write_buffer_size)) {
+    grpc_chttp2_become_writable(exec_ctx, t, s, true, "op.send_message");
+  }
+}
+
 static void add_fetched_slice_locked(grpc_exec_ctx *exec_ctx,
                                      grpc_chttp2_transport *t,
                                      grpc_chttp2_stream *s) {
   s->fetched_send_message_length +=
       (uint32_t)GRPC_SLICE_LENGTH(s->fetching_slice);
   grpc_slice_buffer_add(&s->flow_controlled_buffer, s->fetching_slice);
-  if (s->id != 0) {
-    grpc_chttp2_become_writable(exec_ctx, t, s, true, "op.send_message");
-  }
+  maybe_become_writable_due_to_send_msg(exec_ctx, t, s);
 }
 
 static void continue_fetching_send_locked(grpc_exec_ctx *exec_ctx,
@@ -965,15 +974,6 @@ static void complete_fetch_locked(grpc_exec_ctx *exec_ctx, void *gs,
   }
 }
 
-static void complete_fetch(grpc_exec_ctx *exec_ctx, void *gs,
-                           grpc_error *error) {
-  grpc_chttp2_stream *s = gs;
-  grpc_chttp2_transport *t = s->t;
-  grpc_combiner_execute(exec_ctx, t->combiner, &s->complete_fetch_locked,
-                        GRPC_ERROR_REF(error),
-                        s->complete_fetch_covered_by_poller);
-}
-
 static void do_nothing(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {}
 
 static void log_metadata(const grpc_metadata_batch *md_batch, uint32_t id,
@@ -1009,7 +1009,8 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
 
   grpc_closure *on_complete = op->on_complete;
   if (on_complete == NULL) {
-    on_complete = grpc_closure_create(do_nothing, NULL);
+    on_complete =
+        grpc_closure_create(do_nothing, NULL, grpc_schedule_on_exec_ctx);
   }
 
   /* use final_data as a barrier until enqueue time; the inital counter is
@@ -1112,14 +1113,13 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
                                    (int64_t)len;
       s->complete_fetch_covered_by_poller = op->covered_by_poller;
       if (flags & GRPC_WRITE_BUFFER_HINT) {
-        /* allow up to 64kb to be buffered */
-        /* TODO(ctiller): make this configurable */
-        s->next_message_end_offset -= 65536;
+        s->next_message_end_offset -= t->write_buffer_size;
+        s->write_buffering = true;
+      } else {
+        s->write_buffering = false;
       }
       continue_fetching_send_locked(exec_ctx, t, s);
-      if (s->id != 0) {
-        grpc_chttp2_become_writable(exec_ctx, t, s, true, "op.send_message");
-      }
+      maybe_become_writable_due_to_send_msg(exec_ctx, t, s);
     }
   }
 
@@ -1128,6 +1128,7 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
     on_complete->next_data.scratch |= CLOSURE_BARRIER_MAY_COVER_WRITE;
     s->send_trailing_metadata_finished = add_closure_barrier(on_complete);
     s->send_trailing_metadata = op->send_trailing_metadata;
+    s->write_buffering = false;
     const size_t metadata_size =
         grpc_metadata_batch_size(op->send_trailing_metadata);
     const size_t metadata_peer_limit =
@@ -1212,13 +1213,15 @@ static void perform_stream_op(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
     gpr_free(str);
   }
 
-  grpc_closure_init(&op->transport_private.closure, perform_stream_op_locked,
-                    op);
   op->transport_private.args[0] = gt;
   op->transport_private.args[1] = gs;
   GRPC_CHTTP2_STREAM_REF(s, "perform_stream_op");
-  grpc_combiner_execute(exec_ctx, t->combiner, &op->transport_private.closure,
-                        GRPC_ERROR_NONE, op->covered_by_poller);
+  grpc_closure_sched(
+      exec_ctx,
+      grpc_closure_init(
+          &op->transport_private.closure, perform_stream_op_locked, op,
+          grpc_combiner_scheduler(t->combiner, op->covered_by_poller)),
+      GRPC_ERROR_NONE);
   GPR_TIMER_END("perform_stream_op", 0);
 }
 
@@ -1247,7 +1250,7 @@ void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   grpc_chttp2_outstanding_ping *ping;
   for (ping = t->pings.next; ping != &t->pings; ping = ping->next) {
     if (0 == memcmp(opaque_8bytes, ping->id, 8)) {
-      grpc_exec_ctx_sched(exec_ctx, ping->on_recv, GRPC_ERROR_NONE, NULL);
+      grpc_closure_sched(exec_ctx, ping->on_recv, GRPC_ERROR_NONE);
       ping->next->prev = ping->prev;
       ping->prev->next = ping->next;
       gpr_free(ping);
@@ -1285,7 +1288,7 @@ static void perform_transport_op_locked(grpc_exec_ctx *exec_ctx,
   if (op->send_goaway) {
     send_goaway(exec_ctx, t,
                 grpc_chttp2_grpc_status_to_http2_error(op->goaway_status),
-                grpc_slice_ref(*op->goaway_message));
+                grpc_slice_ref_internal(*op->goaway_message));
   }
 
   if (op->set_accept_stream) {
@@ -1321,11 +1324,12 @@ static void perform_transport_op(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
   char *msg = grpc_transport_op_string(op);
   gpr_free(msg);
   op->transport_private.args[0] = gt;
-  grpc_closure_init(&op->transport_private.closure, perform_transport_op_locked,
-                    op);
   GRPC_CHTTP2_REF_TRANSPORT(t, "transport_op");
-  grpc_combiner_execute(exec_ctx, t->combiner, &op->transport_private.closure,
-                        GRPC_ERROR_NONE, false);
+  grpc_closure_sched(
+      exec_ctx, grpc_closure_init(&op->transport_private.closure,
+                                  perform_transport_op_locked, op,
+                                  grpc_combiner_scheduler(t->combiner, false)),
+      GRPC_ERROR_NONE);
 }
 
 /*******************************************************************************
@@ -1515,21 +1519,22 @@ void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
     char status_string[GPR_LTOA_MIN_BUFSIZE];
     gpr_ltoa(status, status_string);
     grpc_chttp2_incoming_metadata_buffer_add(
-        &s->metadata_buffer[1],
-        grpc_mdelem_from_metadata_strings(
-            GRPC_MDSTR_GRPC_STATUS, grpc_mdstr_from_string(status_string)));
+        &s->metadata_buffer[1], grpc_mdelem_from_metadata_strings(
+                                    exec_ctx, GRPC_MDSTR_GRPC_STATUS,
+                                    grpc_mdstr_from_string(status_string)));
     if (slice) {
       grpc_chttp2_incoming_metadata_buffer_add(
           &s->metadata_buffer[1],
           grpc_mdelem_from_metadata_strings(
-              GRPC_MDSTR_GRPC_MESSAGE,
-              grpc_mdstr_from_slice(grpc_slice_ref(*slice))));
+              exec_ctx, GRPC_MDSTR_GRPC_MESSAGE,
+              grpc_mdstr_from_slice(exec_ctx,
+                                    grpc_slice_ref_internal(*slice))));
     }
     s->published_metadata[1] = GRPC_METADATA_SYNTHESIZED_FROM_FAKE;
     grpc_chttp2_maybe_complete_recv_trailing_metadata(exec_ctx, t, s);
   }
   if (slice) {
-    grpc_slice_unref(*slice);
+    grpc_slice_unref_internal(exec_ctx, *slice);
   }
 }
 
@@ -1685,8 +1690,9 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
 
     if (optional_message != NULL) {
       size_t msg_len = strlen(optional_message);
-      GPR_ASSERT(msg_len < 127);
-      message_pfx = grpc_slice_malloc(15);
+      GPR_ASSERT(msg_len <= UINT32_MAX);
+      uint32_t msg_len_len = GRPC_CHTTP2_VARINT_LENGTH((uint32_t)msg_len, 0);
+      message_pfx = grpc_slice_malloc(14 + msg_len_len);
       p = GRPC_SLICE_START_PTR(message_pfx);
       *p++ = 0x40;
       *p++ = 12; /* len(grpc-message) */
@@ -1702,7 +1708,9 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
       *p++ = 'a';
       *p++ = 'g';
       *p++ = 'e';
-      *p++ = (uint8_t)msg_len;
+      GRPC_CHTTP2_WRITE_VARINT((uint32_t)msg_len, 0, 0, p,
+                               (uint32_t)msg_len_len);
+      p += msg_len_len;
       GPR_ASSERT(p == GRPC_SLICE_END_PTR(message_pfx));
       len += (uint32_t)GRPC_SLICE_LENGTH(message_pfx);
       len += (uint32_t)msg_len;
@@ -1801,19 +1809,6 @@ static void update_global_window(void *args, uint32_t id, void *stream) {
  * INPUT PROCESSING - PARSING
  */
 
-static void read_action_begin(grpc_exec_ctx *exec_ctx, void *tp,
-                              grpc_error *error) {
-  /* Control flow:
-     reading_action_locked ->
-       (parse_unlocked -> post_parse_locked)? ->
-       post_reading_action_locked */
-  GPR_TIMER_BEGIN("reading_action", 0);
-  grpc_chttp2_transport *t = tp;
-  grpc_combiner_execute(exec_ctx, t->combiner, &t->read_action_locked,
-                        GRPC_ERROR_REF(error), false);
-  GPR_TIMER_END("reading_action", 0);
-}
-
 static grpc_error *try_http_parsing(grpc_exec_ctx *exec_ctx,
                                     grpc_chttp2_transport *t) {
   grpc_http_parser parser;
@@ -1910,10 +1905,11 @@ static void read_action_locked(grpc_exec_ctx *exec_ctx, void *tp,
     keep_reading = true;
     GRPC_CHTTP2_REF_TRANSPORT(t, "keep_reading");
   }
-  grpc_slice_buffer_reset_and_unref(&t->read_buffer);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &t->read_buffer);
 
   if (keep_reading) {
-    grpc_endpoint_read(exec_ctx, t->ep, &t->read_buffer, &t->read_action_begin);
+    grpc_endpoint_read(exec_ctx, t->ep, &t->read_buffer,
+                       &t->read_action_locked);
     GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "keep_reading");
   } else {
     GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "reading_action");
@@ -1964,7 +1960,7 @@ static void incoming_byte_stream_unref(grpc_exec_ctx *exec_ctx,
                                        grpc_chttp2_incoming_byte_stream *bs) {
   if (gpr_unref(&bs->refs)) {
     GRPC_ERROR_UNREF(bs->error);
-    grpc_slice_buffer_destroy(&bs->slices);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &bs->slices);
     gpr_mu_destroy(&bs->slice_mu);
     gpr_free(bs);
   }
@@ -2050,10 +2046,12 @@ static int incoming_byte_stream_next(grpc_exec_ctx *exec_ctx,
   bs->next_action.slice = slice;
   bs->next_action.max_size_hint = max_size_hint;
   bs->next_action.on_complete = on_complete;
-  grpc_closure_init(&bs->next_action.closure, incoming_byte_stream_next_locked,
-                    bs);
-  grpc_combiner_execute(exec_ctx, bs->transport->combiner,
-                        &bs->next_action.closure, GRPC_ERROR_NONE, false);
+  grpc_closure_sched(
+      exec_ctx,
+      grpc_closure_init(
+          &bs->next_action.closure, incoming_byte_stream_next_locked, bs,
+          grpc_combiner_scheduler(bs->transport->combiner, false)),
+      GRPC_ERROR_NONE);
   GPR_TIMER_END("incoming_byte_stream_next", 0);
   return 0;
 }
@@ -2075,10 +2073,12 @@ static void incoming_byte_stream_destroy(grpc_exec_ctx *exec_ctx,
   GPR_TIMER_BEGIN("incoming_byte_stream_destroy", 0);
   grpc_chttp2_incoming_byte_stream *bs =
       (grpc_chttp2_incoming_byte_stream *)byte_stream;
-  grpc_closure_init(&bs->destroy_action, incoming_byte_stream_destroy_locked,
-                    bs);
-  grpc_combiner_execute(exec_ctx, bs->transport->combiner, &bs->destroy_action,
-                        GRPC_ERROR_NONE, false);
+  grpc_closure_sched(
+      exec_ctx,
+      grpc_closure_init(
+          &bs->destroy_action, incoming_byte_stream_destroy_locked, bs,
+          grpc_combiner_scheduler(bs->transport->combiner, false)),
+      GRPC_ERROR_NONE);
   GPR_TIMER_END("incoming_byte_stream_destroy", 0);
 }
 
@@ -2086,7 +2086,7 @@ static void incoming_byte_stream_publish_error(
     grpc_exec_ctx *exec_ctx, grpc_chttp2_incoming_byte_stream *bs,
     grpc_error *error) {
   GPR_ASSERT(error != GRPC_ERROR_NONE);
-  grpc_exec_ctx_sched(exec_ctx, bs->on_next, GRPC_ERROR_REF(error), NULL);
+  grpc_closure_sched(exec_ctx, bs->on_next, GRPC_ERROR_REF(error));
   bs->on_next = NULL;
   GRPC_ERROR_UNREF(bs->error);
   bs->error = error;
@@ -2103,7 +2103,7 @@ void grpc_chttp2_incoming_byte_stream_push(grpc_exec_ctx *exec_ctx,
     bs->remaining_bytes -= (uint32_t)GRPC_SLICE_LENGTH(slice);
     if (bs->on_next != NULL) {
       *bs->next = slice;
-      grpc_exec_ctx_sched(exec_ctx, bs->on_next, GRPC_ERROR_NONE, NULL);
+      grpc_closure_sched(exec_ctx, bs->on_next, GRPC_ERROR_NONE);
       bs->on_next = NULL;
     } else {
       grpc_slice_buffer_add(&bs->slices, slice);
@@ -2171,7 +2171,7 @@ static void post_benign_reclaimer(grpc_exec_ctx *exec_ctx,
     GRPC_CHTTP2_REF_TRANSPORT(t, "benign_reclaimer");
     grpc_resource_user_post_reclaimer(exec_ctx,
                                       grpc_endpoint_get_resource_user(t->ep),
-                                      false, &t->benign_reclaimer);
+                                      false, &t->benign_reclaimer_locked);
   }
 }
 
@@ -2182,24 +2182,10 @@ static void post_destructive_reclaimer(grpc_exec_ctx *exec_ctx,
     GRPC_CHTTP2_REF_TRANSPORT(t, "destructive_reclaimer");
     grpc_resource_user_post_reclaimer(exec_ctx,
                                       grpc_endpoint_get_resource_user(t->ep),
-                                      true, &t->destructive_reclaimer);
+                                      true, &t->destructive_reclaimer_locked);
   }
 }
 
-static void benign_reclaimer(grpc_exec_ctx *exec_ctx, void *arg,
-                             grpc_error *error) {
-  grpc_chttp2_transport *t = arg;
-  grpc_combiner_execute(exec_ctx, t->combiner, &t->benign_reclaimer_locked,
-                        GRPC_ERROR_REF(error), false);
-}
-
-static void destructive_reclaimer(grpc_exec_ctx *exec_ctx, void *arg,
-                                  grpc_error *error) {
-  grpc_chttp2_transport *t = arg;
-  grpc_combiner_execute(exec_ctx, t->combiner, &t->destructive_reclaimer_locked,
-                        GRPC_ERROR_REF(error), false);
-}
-
 static void benign_reclaimer_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                     grpc_error *error) {
   grpc_chttp2_transport *t = arg;
@@ -2380,5 +2366,5 @@ void grpc_chttp2_transport_start_reading(grpc_exec_ctx *exec_ctx,
     grpc_slice_buffer_move_into(read_buffer, &t->read_buffer);
     gpr_free(read_buffer);
   }
-  read_action_begin(exec_ctx, t, GRPC_ERROR_NONE);
+  grpc_closure_sched(exec_ctx, &t->read_action_locked, GRPC_ERROR_NONE);
 }
diff --git a/src/core/ext/transport/chttp2/transport/frame_rst_stream.c b/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
index b4c5ed769b9cf0cc689411454738125bfe17033c..20043f5fbf431cd9a275cf6e3ae782b6b7e4fc98 100644
--- a/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
+++ b/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
@@ -109,7 +109,7 @@ grpc_error *grpc_chttp2_rst_stream_parser_parse(grpc_exec_ctx *exec_ctx,
                       (((uint32_t)p->reason_bytes[2]) << 8) |
                       (((uint32_t)p->reason_bytes[3]));
     grpc_error *error = GRPC_ERROR_NONE;
-    if (reason != GRPC_CHTTP2_NO_ERROR) {
+    if (reason != GRPC_CHTTP2_NO_ERROR || s->header_frames_received < 2) {
       error = grpc_error_set_int(GRPC_ERROR_CREATE("RST_STREAM"),
                                  GRPC_ERROR_INT_HTTP2_ERROR, (intptr_t)reason);
       grpc_status_code status_code = grpc_chttp2_http2_error_to_grpc_status(
diff --git a/src/core/ext/transport/chttp2/transport/hpack_encoder.c b/src/core/ext/transport/chttp2/transport/hpack_encoder.c
index eb68fe3138749256bf1f69d6e513c59f29078ef5..49a8326f627d61831f92f5dcea25f8904a489dd9 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_encoder.c
+++ b/src/core/ext/transport/chttp2/transport/hpack_encoder.c
@@ -48,6 +48,7 @@
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
 #include "src/core/ext/transport/chttp2/transport/hpack_table.h"
 #include "src/core/ext/transport/chttp2/transport/varint.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/transport/metadata.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "src/core/lib/transport/timeout_encoding.h"
@@ -183,7 +184,8 @@ static void evict_entry(grpc_chttp2_hpack_compressor *c) {
 }
 
 /* add an element to the decoder table */
-static void add_elem(grpc_chttp2_hpack_compressor *c, grpc_mdelem *elem) {
+static void add_elem(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_compressor *c,
+                     grpc_mdelem *elem) {
   uint32_t key_hash = elem->key->hash;
   uint32_t elem_hash = GRPC_MDSTR_KV_HASH(key_hash, elem->value->hash);
   uint32_t new_index = c->tail_remote_index + c->table_elems + 1;
@@ -227,12 +229,12 @@ static void add_elem(grpc_chttp2_hpack_compressor *c, grpc_mdelem *elem) {
   } else if (c->indices_elems[HASH_FRAGMENT_2(elem_hash)] <
              c->indices_elems[HASH_FRAGMENT_3(elem_hash)]) {
     /* not there: replace oldest */
-    GRPC_MDELEM_UNREF(c->entries_elems[HASH_FRAGMENT_2(elem_hash)]);
+    GRPC_MDELEM_UNREF(exec_ctx, c->entries_elems[HASH_FRAGMENT_2(elem_hash)]);
     c->entries_elems[HASH_FRAGMENT_2(elem_hash)] = GRPC_MDELEM_REF(elem);
     c->indices_elems[HASH_FRAGMENT_2(elem_hash)] = new_index;
   } else {
     /* not there: replace oldest */
-    GRPC_MDELEM_UNREF(c->entries_elems[HASH_FRAGMENT_3(elem_hash)]);
+    GRPC_MDELEM_UNREF(exec_ctx, c->entries_elems[HASH_FRAGMENT_3(elem_hash)]);
     c->entries_elems[HASH_FRAGMENT_3(elem_hash)] = GRPC_MDELEM_REF(elem);
     c->indices_elems[HASH_FRAGMENT_3(elem_hash)] = new_index;
   }
@@ -251,11 +253,11 @@ static void add_elem(grpc_chttp2_hpack_compressor *c, grpc_mdelem *elem) {
     c->indices_keys[HASH_FRAGMENT_3(key_hash)] = new_index;
   } else if (c->indices_keys[HASH_FRAGMENT_2(key_hash)] <
              c->indices_keys[HASH_FRAGMENT_3(key_hash)]) {
-    GRPC_MDSTR_UNREF(c->entries_keys[HASH_FRAGMENT_2(key_hash)]);
+    GRPC_MDSTR_UNREF(exec_ctx, c->entries_keys[HASH_FRAGMENT_2(key_hash)]);
     c->entries_keys[HASH_FRAGMENT_2(key_hash)] = GRPC_MDSTR_REF(elem->key);
     c->indices_keys[HASH_FRAGMENT_2(key_hash)] = new_index;
   } else {
-    GRPC_MDSTR_UNREF(c->entries_keys[HASH_FRAGMENT_3(key_hash)]);
+    GRPC_MDSTR_UNREF(exec_ctx, c->entries_keys[HASH_FRAGMENT_3(key_hash)]);
     c->entries_keys[HASH_FRAGMENT_3(key_hash)] = GRPC_MDSTR_REF(elem->key);
     c->indices_keys[HASH_FRAGMENT_3(key_hash)] = new_index;
   }
@@ -294,7 +296,7 @@ static void emit_lithdr_incidx(grpc_chttp2_hpack_compressor *c,
                            add_tiny_header_data(st, len_pfx), len_pfx);
   GRPC_CHTTP2_WRITE_VARINT((uint32_t)len_val, 1, huffman_prefix,
                            add_tiny_header_data(st, len_val_len), len_val_len);
-  add_header_data(st, grpc_slice_ref(value_slice));
+  add_header_data(st, grpc_slice_ref_internal(value_slice));
 }
 
 static void emit_lithdr_noidx(grpc_chttp2_hpack_compressor *c,
@@ -311,7 +313,7 @@ static void emit_lithdr_noidx(grpc_chttp2_hpack_compressor *c,
                            add_tiny_header_data(st, len_pfx), len_pfx);
   GRPC_CHTTP2_WRITE_VARINT((uint32_t)len_val, 1, huffman_prefix,
                            add_tiny_header_data(st, len_val_len), len_val_len);
-  add_header_data(st, grpc_slice_ref(value_slice));
+  add_header_data(st, grpc_slice_ref_internal(value_slice));
 }
 
 static void emit_lithdr_incidx_v(grpc_chttp2_hpack_compressor *c,
@@ -327,10 +329,10 @@ static void emit_lithdr_incidx_v(grpc_chttp2_hpack_compressor *c,
   *add_tiny_header_data(st, 1) = 0x40;
   GRPC_CHTTP2_WRITE_VARINT(len_key, 1, 0x00,
                            add_tiny_header_data(st, len_key_len), len_key_len);
-  add_header_data(st, grpc_slice_ref(elem->key->slice));
+  add_header_data(st, grpc_slice_ref_internal(elem->key->slice));
   GRPC_CHTTP2_WRITE_VARINT(len_val, 1, huffman_prefix,
                            add_tiny_header_data(st, len_val_len), len_val_len);
-  add_header_data(st, grpc_slice_ref(value_slice));
+  add_header_data(st, grpc_slice_ref_internal(value_slice));
 }
 
 static void emit_lithdr_noidx_v(grpc_chttp2_hpack_compressor *c,
@@ -346,10 +348,10 @@ static void emit_lithdr_noidx_v(grpc_chttp2_hpack_compressor *c,
   *add_tiny_header_data(st, 1) = 0x00;
   GRPC_CHTTP2_WRITE_VARINT(len_key, 1, 0x00,
                            add_tiny_header_data(st, len_key_len), len_key_len);
-  add_header_data(st, grpc_slice_ref(elem->key->slice));
+  add_header_data(st, grpc_slice_ref_internal(elem->key->slice));
   GRPC_CHTTP2_WRITE_VARINT(len_val, 1, huffman_prefix,
                            add_tiny_header_data(st, len_val_len), len_val_len);
-  add_header_data(st, grpc_slice_ref(value_slice));
+  add_header_data(st, grpc_slice_ref_internal(value_slice));
 }
 
 static void emit_advertise_table_size_change(grpc_chttp2_hpack_compressor *c,
@@ -366,8 +368,8 @@ static uint32_t dynidx(grpc_chttp2_hpack_compressor *c, uint32_t elem_index) {
 }
 
 /* encode an mdelem */
-static void hpack_enc(grpc_chttp2_hpack_compressor *c, grpc_mdelem *elem,
-                      framer_state *st) {
+static void hpack_enc(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_compressor *c,
+                      grpc_mdelem *elem, framer_state *st) {
   uint32_t key_hash = elem->key->hash;
   uint32_t elem_hash = GRPC_MDSTR_KV_HASH(key_hash, elem->value->hash);
   size_t decoder_space_usage;
@@ -417,7 +419,7 @@ static void hpack_enc(grpc_chttp2_hpack_compressor *c, grpc_mdelem *elem,
     /* HIT: key (first cuckoo hash) */
     if (should_add_elem) {
       emit_lithdr_incidx(c, dynidx(c, indices_key), elem, st);
-      add_elem(c, elem);
+      add_elem(exec_ctx, c, elem);
       return;
     } else {
       emit_lithdr_noidx(c, dynidx(c, indices_key), elem, st);
@@ -432,7 +434,7 @@ static void hpack_enc(grpc_chttp2_hpack_compressor *c, grpc_mdelem *elem,
     /* HIT: key (first cuckoo hash) */
     if (should_add_elem) {
       emit_lithdr_incidx(c, dynidx(c, indices_key), elem, st);
-      add_elem(c, elem);
+      add_elem(exec_ctx, c, elem);
       return;
     } else {
       emit_lithdr_noidx(c, dynidx(c, indices_key), elem, st);
@@ -445,7 +447,7 @@ static void hpack_enc(grpc_chttp2_hpack_compressor *c, grpc_mdelem *elem,
 
   if (should_add_elem) {
     emit_lithdr_incidx_v(c, elem, st);
-    add_elem(c, elem);
+    add_elem(exec_ctx, c, elem);
     return;
   } else {
     emit_lithdr_noidx_v(c, elem, st);
@@ -457,16 +459,17 @@ static void hpack_enc(grpc_chttp2_hpack_compressor *c, grpc_mdelem *elem,
 #define STRLEN_LIT(x) (sizeof(x) - 1)
 #define TIMEOUT_KEY "grpc-timeout"
 
-static void deadline_enc(grpc_chttp2_hpack_compressor *c, gpr_timespec deadline,
+static void deadline_enc(grpc_exec_ctx *exec_ctx,
+                         grpc_chttp2_hpack_compressor *c, gpr_timespec deadline,
                          framer_state *st) {
   char timeout_str[GRPC_HTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE];
   grpc_mdelem *mdelem;
   grpc_http2_encode_timeout(
       gpr_time_sub(deadline, gpr_now(deadline.clock_type)), timeout_str);
   mdelem = grpc_mdelem_from_metadata_strings(
-      GRPC_MDSTR_GRPC_TIMEOUT, grpc_mdstr_from_string(timeout_str));
-  hpack_enc(c, mdelem, st);
-  GRPC_MDELEM_UNREF(mdelem);
+      exec_ctx, GRPC_MDSTR_GRPC_TIMEOUT, grpc_mdstr_from_string(timeout_str));
+  hpack_enc(exec_ctx, c, mdelem, st);
+  GRPC_MDELEM_UNREF(exec_ctx, mdelem);
 }
 
 static uint32_t elems_for_bytes(uint32_t bytes) { return (bytes + 31) / 32; }
@@ -483,11 +486,12 @@ void grpc_chttp2_hpack_compressor_init(grpc_chttp2_hpack_compressor *c) {
          sizeof(*c->table_elem_size) * c->cap_table_elems);
 }
 
-void grpc_chttp2_hpack_compressor_destroy(grpc_chttp2_hpack_compressor *c) {
+void grpc_chttp2_hpack_compressor_destroy(grpc_exec_ctx *exec_ctx,
+                                          grpc_chttp2_hpack_compressor *c) {
   int i;
   for (i = 0; i < GRPC_CHTTP2_HPACKC_NUM_VALUES; i++) {
-    if (c->entries_keys[i]) GRPC_MDSTR_UNREF(c->entries_keys[i]);
-    if (c->entries_elems[i]) GRPC_MDELEM_UNREF(c->entries_elems[i]);
+    if (c->entries_keys[i]) GRPC_MDSTR_UNREF(exec_ctx, c->entries_keys[i]);
+    if (c->entries_elems[i]) GRPC_MDELEM_UNREF(exec_ctx, c->entries_elems[i]);
   }
   gpr_free(c->table_elem_size);
 }
@@ -542,7 +546,8 @@ void grpc_chttp2_hpack_compressor_set_max_table_size(
   }
 }
 
-void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c,
+void grpc_chttp2_encode_header(grpc_exec_ctx *exec_ctx,
+                               grpc_chttp2_hpack_compressor *c,
                                uint32_t stream_id,
                                grpc_metadata_batch *metadata, int is_eof,
                                size_t max_frame_size,
@@ -571,11 +576,11 @@ void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c,
   }
   grpc_metadata_batch_assert_ok(metadata);
   for (l = metadata->list.head; l; l = l->next) {
-    hpack_enc(c, l->md, &st);
+    hpack_enc(exec_ctx, c, l->md, &st);
   }
   deadline = metadata->deadline;
   if (gpr_time_cmp(deadline, gpr_inf_future(deadline.clock_type)) != 0) {
-    deadline_enc(c, deadline, &st);
+    deadline_enc(exec_ctx, c, deadline, &st);
   }
 
   finish_frame(&st, 1, is_eof);
diff --git a/src/core/ext/transport/chttp2/transport/hpack_encoder.h b/src/core/ext/transport/chttp2/transport/hpack_encoder.h
index bcbd675ca2ef3aa1c68b219c07762d67bc70a714..3a35496ec8a664f64e8793d052c23e9045112b61 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_encoder.h
+++ b/src/core/ext/transport/chttp2/transport/hpack_encoder.h
@@ -83,13 +83,15 @@ typedef struct {
 } grpc_chttp2_hpack_compressor;
 
 void grpc_chttp2_hpack_compressor_init(grpc_chttp2_hpack_compressor *c);
-void grpc_chttp2_hpack_compressor_destroy(grpc_chttp2_hpack_compressor *c);
+void grpc_chttp2_hpack_compressor_destroy(grpc_exec_ctx *exec_ctx,
+                                          grpc_chttp2_hpack_compressor *c);
 void grpc_chttp2_hpack_compressor_set_max_table_size(
     grpc_chttp2_hpack_compressor *c, uint32_t max_table_size);
 void grpc_chttp2_hpack_compressor_set_max_usable_size(
     grpc_chttp2_hpack_compressor *c, uint32_t max_table_size);
 
-void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c, uint32_t id,
+void grpc_chttp2_encode_header(grpc_exec_ctx *exec_ctx,
+                               grpc_chttp2_hpack_compressor *c, uint32_t id,
                                grpc_metadata_batch *metadata, int is_eof,
                                size_t max_frame_size,
                                grpc_transport_one_way_stats *stats,
diff --git a/src/core/ext/transport/chttp2/transport/hpack_parser.c b/src/core/ext/transport/chttp2/transport/hpack_parser.c
index 6a9200b8dbdf13bd85666a9ec4d322c42c27d82b..8b91cc760b85c018a56e5d36ca98efc384a1cb6d 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_parser.c
+++ b/src/core/ext/transport/chttp2/transport/hpack_parser.c
@@ -670,11 +670,11 @@ static const uint8_t inverse_base64[256] = {
 static grpc_error *on_hdr(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_parser *p,
                           grpc_mdelem *md, int add_to_table) {
   if (add_to_table) {
-    grpc_error *err = grpc_chttp2_hptbl_add(&p->table, md);
+    grpc_error *err = grpc_chttp2_hptbl_add(exec_ctx, &p->table, md);
     if (err != GRPC_ERROR_NONE) return err;
   }
   if (p->on_header == NULL) {
-    GRPC_MDELEM_UNREF(md);
+    GRPC_MDELEM_UNREF(exec_ctx, md);
     return GRPC_ERROR_CREATE("on_header callback not set");
   }
   p->on_header(exec_ctx, p->on_header_user_data, md);
@@ -815,10 +815,10 @@ static grpc_error *finish_lithdr_incidx(grpc_exec_ctx *exec_ctx,
                                         const uint8_t *end) {
   grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
   GPR_ASSERT(md != NULL); /* handled in string parsing */
-  grpc_error *err = on_hdr(
-      exec_ctx, p, grpc_mdelem_from_metadata_strings(GRPC_MDSTR_REF(md->key),
-                                                     take_string(p, &p->value)),
-      1);
+  grpc_error *err = on_hdr(exec_ctx, p, grpc_mdelem_from_metadata_strings(
+                                            exec_ctx, GRPC_MDSTR_REF(md->key),
+                                            take_string(p, &p->value)),
+                           1);
   if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err);
   return parse_begin(exec_ctx, p, cur, end);
 }
@@ -828,10 +828,10 @@ static grpc_error *finish_lithdr_incidx_v(grpc_exec_ctx *exec_ctx,
                                           grpc_chttp2_hpack_parser *p,
                                           const uint8_t *cur,
                                           const uint8_t *end) {
-  grpc_error *err = on_hdr(
-      exec_ctx, p, grpc_mdelem_from_metadata_strings(take_string(p, &p->key),
-                                                     take_string(p, &p->value)),
-      1);
+  grpc_error *err = on_hdr(exec_ctx, p, grpc_mdelem_from_metadata_strings(
+                                            exec_ctx, take_string(p, &p->key),
+                                            take_string(p, &p->value)),
+                           1);
   if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err);
   return parse_begin(exec_ctx, p, cur, end);
 }
@@ -883,10 +883,10 @@ static grpc_error *finish_lithdr_notidx(grpc_exec_ctx *exec_ctx,
                                         const uint8_t *end) {
   grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
   GPR_ASSERT(md != NULL); /* handled in string parsing */
-  grpc_error *err = on_hdr(
-      exec_ctx, p, grpc_mdelem_from_metadata_strings(GRPC_MDSTR_REF(md->key),
-                                                     take_string(p, &p->value)),
-      0);
+  grpc_error *err = on_hdr(exec_ctx, p, grpc_mdelem_from_metadata_strings(
+                                            exec_ctx, GRPC_MDSTR_REF(md->key),
+                                            take_string(p, &p->value)),
+                           0);
   if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err);
   return parse_begin(exec_ctx, p, cur, end);
 }
@@ -896,10 +896,10 @@ static grpc_error *finish_lithdr_notidx_v(grpc_exec_ctx *exec_ctx,
                                           grpc_chttp2_hpack_parser *p,
                                           const uint8_t *cur,
                                           const uint8_t *end) {
-  grpc_error *err = on_hdr(
-      exec_ctx, p, grpc_mdelem_from_metadata_strings(take_string(p, &p->key),
-                                                     take_string(p, &p->value)),
-      0);
+  grpc_error *err = on_hdr(exec_ctx, p, grpc_mdelem_from_metadata_strings(
+                                            exec_ctx, take_string(p, &p->key),
+                                            take_string(p, &p->value)),
+                           0);
   if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err);
   return parse_begin(exec_ctx, p, cur, end);
 }
@@ -951,10 +951,10 @@ static grpc_error *finish_lithdr_nvridx(grpc_exec_ctx *exec_ctx,
                                         const uint8_t *end) {
   grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
   GPR_ASSERT(md != NULL); /* handled in string parsing */
-  grpc_error *err = on_hdr(
-      exec_ctx, p, grpc_mdelem_from_metadata_strings(GRPC_MDSTR_REF(md->key),
-                                                     take_string(p, &p->value)),
-      0);
+  grpc_error *err = on_hdr(exec_ctx, p, grpc_mdelem_from_metadata_strings(
+                                            exec_ctx, GRPC_MDSTR_REF(md->key),
+                                            take_string(p, &p->value)),
+                           0);
   if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err);
   return parse_begin(exec_ctx, p, cur, end);
 }
@@ -964,10 +964,10 @@ static grpc_error *finish_lithdr_nvridx_v(grpc_exec_ctx *exec_ctx,
                                           grpc_chttp2_hpack_parser *p,
                                           const uint8_t *cur,
                                           const uint8_t *end) {
-  grpc_error *err = on_hdr(
-      exec_ctx, p, grpc_mdelem_from_metadata_strings(take_string(p, &p->key),
-                                                     take_string(p, &p->value)),
-      0);
+  grpc_error *err = on_hdr(exec_ctx, p, grpc_mdelem_from_metadata_strings(
+                                            exec_ctx, take_string(p, &p->key),
+                                            take_string(p, &p->value)),
+                           0);
   if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err);
   return parse_begin(exec_ctx, p, cur, end);
 }
@@ -1020,7 +1020,7 @@ static grpc_error *finish_max_tbl_size(grpc_exec_ctx *exec_ctx,
     gpr_log(GPR_INFO, "MAX TABLE SIZE: %d", p->index);
   }
   grpc_error *err =
-      grpc_chttp2_hptbl_set_current_table_size(&p->table, p->index);
+      grpc_chttp2_hptbl_set_current_table_size(exec_ctx, &p->table, p->index);
   if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err);
   return parse_begin(exec_ctx, p, cur, end);
 }
@@ -1534,7 +1534,8 @@ static grpc_error *parse_value_string_with_literal_key(
 
 /* PUBLIC INTERFACE */
 
-void grpc_chttp2_hpack_parser_init(grpc_chttp2_hpack_parser *p) {
+void grpc_chttp2_hpack_parser_init(grpc_exec_ctx *exec_ctx,
+                                   grpc_chttp2_hpack_parser *p) {
   p->on_header = NULL;
   p->on_header_user_data = NULL;
   p->state = parse_begin;
@@ -1546,7 +1547,7 @@ void grpc_chttp2_hpack_parser_init(grpc_chttp2_hpack_parser *p) {
   p->value.length = 0;
   p->dynamic_table_update_allowed = 2;
   p->last_error = GRPC_ERROR_NONE;
-  grpc_chttp2_hptbl_init(&p->table);
+  grpc_chttp2_hptbl_init(exec_ctx, &p->table);
 }
 
 void grpc_chttp2_hpack_parser_set_has_priority(grpc_chttp2_hpack_parser *p) {
@@ -1554,8 +1555,9 @@ void grpc_chttp2_hpack_parser_set_has_priority(grpc_chttp2_hpack_parser *p) {
   p->state = parse_stream_dep0;
 }
 
-void grpc_chttp2_hpack_parser_destroy(grpc_chttp2_hpack_parser *p) {
-  grpc_chttp2_hptbl_destroy(&p->table);
+void grpc_chttp2_hpack_parser_destroy(grpc_exec_ctx *exec_ctx,
+                                      grpc_chttp2_hpack_parser *p) {
+  grpc_chttp2_hptbl_destroy(exec_ctx, &p->table);
   GRPC_ERROR_UNREF(p->last_error);
   gpr_free(p->key.str);
   gpr_free(p->value.str);
@@ -1634,10 +1636,11 @@ grpc_error *grpc_chttp2_header_parser_parse(grpc_exec_ctx *exec_ctx,
              however -- it might be that we receive a RST_STREAM following this
              and can avoid the extra write */
           GRPC_CHTTP2_STREAM_REF(s, "final_rst");
-          grpc_combiner_execute_finally(
-              exec_ctx, t->combiner,
-              grpc_closure_create(force_client_rst_stream, s), GRPC_ERROR_NONE,
-              false);
+          grpc_closure_sched(
+              exec_ctx, grpc_closure_create(force_client_rst_stream, s,
+                                            grpc_combiner_finally_scheduler(
+                                                t->combiner, false)),
+              GRPC_ERROR_NONE);
         }
         grpc_chttp2_mark_stream_closed(exec_ctx, t, s, true, false,
                                        GRPC_ERROR_NONE);
diff --git a/src/core/ext/transport/chttp2/transport/hpack_parser.h b/src/core/ext/transport/chttp2/transport/hpack_parser.h
index a39bf466cdfcfd28f600a29f47600e8b398a523d..52ccf1e7a7334c9fd93fea3c17bff96a8cd4e086 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_parser.h
+++ b/src/core/ext/transport/chttp2/transport/hpack_parser.h
@@ -99,8 +99,10 @@ struct grpc_chttp2_hpack_parser {
   grpc_chttp2_hptbl table;
 };
 
-void grpc_chttp2_hpack_parser_init(grpc_chttp2_hpack_parser *p);
-void grpc_chttp2_hpack_parser_destroy(grpc_chttp2_hpack_parser *p);
+void grpc_chttp2_hpack_parser_init(grpc_exec_ctx *exec_ctx,
+                                   grpc_chttp2_hpack_parser *p);
+void grpc_chttp2_hpack_parser_destroy(grpc_exec_ctx *exec_ctx,
+                                      grpc_chttp2_hpack_parser *p);
 
 void grpc_chttp2_hpack_parser_set_has_priority(grpc_chttp2_hpack_parser *p);
 
diff --git a/src/core/ext/transport/chttp2/transport/hpack_table.c b/src/core/ext/transport/chttp2/transport/hpack_table.c
index 2dc793d304b6d08d89d7b68d93014969c0ab1703..26d4036d49f6272b84e3e13096ae82684a050a6f 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_table.c
+++ b/src/core/ext/transport/chttp2/transport/hpack_table.c
@@ -179,7 +179,7 @@ static uint32_t entries_for_bytes(uint32_t bytes) {
          GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
 }
 
-void grpc_chttp2_hptbl_init(grpc_chttp2_hptbl *tbl) {
+void grpc_chttp2_hptbl_init(grpc_exec_ctx *exec_ctx, grpc_chttp2_hptbl *tbl) {
   size_t i;
 
   memset(tbl, 0, sizeof(*tbl));
@@ -190,18 +190,20 @@ void grpc_chttp2_hptbl_init(grpc_chttp2_hptbl *tbl) {
   tbl->ents = gpr_malloc(sizeof(*tbl->ents) * tbl->cap_entries);
   memset(tbl->ents, 0, sizeof(*tbl->ents) * tbl->cap_entries);
   for (i = 1; i <= GRPC_CHTTP2_LAST_STATIC_ENTRY; i++) {
-    tbl->static_ents[i - 1] =
-        grpc_mdelem_from_strings(static_table[i].key, static_table[i].value);
+    tbl->static_ents[i - 1] = grpc_mdelem_from_strings(
+        exec_ctx, static_table[i].key, static_table[i].value);
   }
 }
 
-void grpc_chttp2_hptbl_destroy(grpc_chttp2_hptbl *tbl) {
+void grpc_chttp2_hptbl_destroy(grpc_exec_ctx *exec_ctx,
+                               grpc_chttp2_hptbl *tbl) {
   size_t i;
   for (i = 0; i < GRPC_CHTTP2_LAST_STATIC_ENTRY; i++) {
-    GRPC_MDELEM_UNREF(tbl->static_ents[i]);
+    GRPC_MDELEM_UNREF(exec_ctx, tbl->static_ents[i]);
   }
   for (i = 0; i < tbl->num_ents; i++) {
-    GRPC_MDELEM_UNREF(tbl->ents[(tbl->first_ent + i) % tbl->cap_entries]);
+    GRPC_MDELEM_UNREF(exec_ctx,
+                      tbl->ents[(tbl->first_ent + i) % tbl->cap_entries]);
   }
   gpr_free(tbl->ents);
 }
@@ -224,7 +226,7 @@ grpc_mdelem *grpc_chttp2_hptbl_lookup(const grpc_chttp2_hptbl *tbl,
 }
 
 /* Evict one element from the table */
-static void evict1(grpc_chttp2_hptbl *tbl) {
+static void evict1(grpc_exec_ctx *exec_ctx, grpc_chttp2_hptbl *tbl) {
   grpc_mdelem *first_ent = tbl->ents[tbl->first_ent];
   size_t elem_bytes = GRPC_SLICE_LENGTH(first_ent->key->slice) +
                       GRPC_SLICE_LENGTH(first_ent->value->slice) +
@@ -233,7 +235,7 @@ static void evict1(grpc_chttp2_hptbl *tbl) {
   tbl->mem_used -= (uint32_t)elem_bytes;
   tbl->first_ent = ((tbl->first_ent + 1) % tbl->cap_entries);
   tbl->num_ents--;
-  GRPC_MDELEM_UNREF(first_ent);
+  GRPC_MDELEM_UNREF(exec_ctx, first_ent);
 }
 
 static void rebuild_ents(grpc_chttp2_hptbl *tbl, uint32_t new_cap) {
@@ -249,7 +251,8 @@ static void rebuild_ents(grpc_chttp2_hptbl *tbl, uint32_t new_cap) {
   tbl->first_ent = 0;
 }
 
-void grpc_chttp2_hptbl_set_max_bytes(grpc_chttp2_hptbl *tbl,
+void grpc_chttp2_hptbl_set_max_bytes(grpc_exec_ctx *exec_ctx,
+                                     grpc_chttp2_hptbl *tbl,
                                      uint32_t max_bytes) {
   if (tbl->max_bytes == max_bytes) {
     return;
@@ -258,12 +261,13 @@ void grpc_chttp2_hptbl_set_max_bytes(grpc_chttp2_hptbl *tbl,
     gpr_log(GPR_DEBUG, "Update hpack parser max size to %d", max_bytes);
   }
   while (tbl->mem_used > max_bytes) {
-    evict1(tbl);
+    evict1(exec_ctx, tbl);
   }
   tbl->max_bytes = max_bytes;
 }
 
-grpc_error *grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl *tbl,
+grpc_error *grpc_chttp2_hptbl_set_current_table_size(grpc_exec_ctx *exec_ctx,
+                                                     grpc_chttp2_hptbl *tbl,
                                                      uint32_t bytes) {
   if (tbl->current_table_bytes == bytes) {
     return GRPC_ERROR_NONE;
@@ -281,7 +285,7 @@ grpc_error *grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl *tbl,
     gpr_log(GPR_DEBUG, "Update hpack parser table size to %d", bytes);
   }
   while (tbl->mem_used > bytes) {
-    evict1(tbl);
+    evict1(exec_ctx, tbl);
   }
   tbl->current_table_bytes = bytes;
   tbl->max_entries = entries_for_bytes(bytes);
@@ -296,7 +300,8 @@ grpc_error *grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl *tbl,
   return GRPC_ERROR_NONE;
 }
 
-grpc_error *grpc_chttp2_hptbl_add(grpc_chttp2_hptbl *tbl, grpc_mdelem *md) {
+grpc_error *grpc_chttp2_hptbl_add(grpc_exec_ctx *exec_ctx,
+                                  grpc_chttp2_hptbl *tbl, grpc_mdelem *md) {
   /* determine how many bytes of buffer this entry represents */
   size_t elem_bytes = GRPC_SLICE_LENGTH(md->key->slice) +
                       GRPC_SLICE_LENGTH(md->value->slice) +
@@ -326,14 +331,14 @@ grpc_error *grpc_chttp2_hptbl_add(grpc_chttp2_hptbl *tbl, grpc_mdelem *md) {
      * empty table.
      */
     while (tbl->num_ents) {
-      evict1(tbl);
+      evict1(exec_ctx, tbl);
     }
     return GRPC_ERROR_NONE;
   }
 
   /* evict entries to ensure no overflow */
   while (elem_bytes > (size_t)tbl->current_table_bytes - tbl->mem_used) {
-    evict1(tbl);
+    evict1(exec_ctx, tbl);
   }
 
   /* copy the finalized entry in */
diff --git a/src/core/ext/transport/chttp2/transport/hpack_table.h b/src/core/ext/transport/chttp2/transport/hpack_table.h
index 2ca130e64b20f9095113edeb3203dbbc7bc44a9e..144574ef06ec73063be0a5cd40507c775d2a66d0 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_table.h
+++ b/src/core/ext/transport/chttp2/transport/hpack_table.h
@@ -84,18 +84,21 @@ typedef struct {
 } grpc_chttp2_hptbl;
 
 /* initialize a hpack table */
-void grpc_chttp2_hptbl_init(grpc_chttp2_hptbl *tbl);
-void grpc_chttp2_hptbl_destroy(grpc_chttp2_hptbl *tbl);
-void grpc_chttp2_hptbl_set_max_bytes(grpc_chttp2_hptbl *tbl,
+void grpc_chttp2_hptbl_init(grpc_exec_ctx *exec_ctx, grpc_chttp2_hptbl *tbl);
+void grpc_chttp2_hptbl_destroy(grpc_exec_ctx *exec_ctx, grpc_chttp2_hptbl *tbl);
+void grpc_chttp2_hptbl_set_max_bytes(grpc_exec_ctx *exec_ctx,
+                                     grpc_chttp2_hptbl *tbl,
                                      uint32_t max_bytes);
-grpc_error *grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl *tbl,
+grpc_error *grpc_chttp2_hptbl_set_current_table_size(grpc_exec_ctx *exec_ctx,
+                                                     grpc_chttp2_hptbl *tbl,
                                                      uint32_t bytes);
 
 /* lookup a table entry based on its hpack index */
 grpc_mdelem *grpc_chttp2_hptbl_lookup(const grpc_chttp2_hptbl *tbl,
                                       uint32_t index);
 /* add a table entry to the index */
-grpc_error *grpc_chttp2_hptbl_add(grpc_chttp2_hptbl *tbl,
+grpc_error *grpc_chttp2_hptbl_add(grpc_exec_ctx *exec_ctx,
+                                  grpc_chttp2_hptbl *tbl,
                                   grpc_mdelem *md) GRPC_MUST_USE_RESULT;
 /* Find a key/value pair in the table... returns the index in the table of the
    most similar entry, or 0 if the value was not found */
diff --git a/src/core/ext/transport/chttp2/transport/incoming_metadata.c b/src/core/ext/transport/chttp2/transport/incoming_metadata.c
index 3e463a79957b08c4765421809d2e674c7edb4450..5d1094999cb4772fe2a301d4d591336918175b93 100644
--- a/src/core/ext/transport/chttp2/transport/incoming_metadata.c
+++ b/src/core/ext/transport/chttp2/transport/incoming_metadata.c
@@ -46,11 +46,11 @@ void grpc_chttp2_incoming_metadata_buffer_init(
 }
 
 void grpc_chttp2_incoming_metadata_buffer_destroy(
-    grpc_chttp2_incoming_metadata_buffer *buffer) {
+    grpc_exec_ctx *exec_ctx, grpc_chttp2_incoming_metadata_buffer *buffer) {
   size_t i;
   if (!buffer->published) {
     for (i = 0; i < buffer->count; i++) {
-      GRPC_MDELEM_UNREF(buffer->elems[i].md);
+      GRPC_MDELEM_UNREF(exec_ctx, buffer->elems[i].md);
     }
   }
   gpr_free(buffer->elems);
diff --git a/src/core/ext/transport/chttp2/transport/incoming_metadata.h b/src/core/ext/transport/chttp2/transport/incoming_metadata.h
index df4343b93ed681d05c569cfa9a2fdd18f4c5aa94..7a0c4da15f33bc5db0639f4d8bf289c10f884adb 100644
--- a/src/core/ext/transport/chttp2/transport/incoming_metadata.h
+++ b/src/core/ext/transport/chttp2/transport/incoming_metadata.h
@@ -49,7 +49,7 @@ typedef struct {
 void grpc_chttp2_incoming_metadata_buffer_init(
     grpc_chttp2_incoming_metadata_buffer *buffer);
 void grpc_chttp2_incoming_metadata_buffer_destroy(
-    grpc_chttp2_incoming_metadata_buffer *buffer);
+    grpc_exec_ctx *exec_ctx, grpc_chttp2_incoming_metadata_buffer *buffer);
 void grpc_chttp2_incoming_metadata_buffer_publish(
     grpc_chttp2_incoming_metadata_buffer *buffer, grpc_metadata_batch *batch);
 
diff --git a/src/core/ext/transport/chttp2/transport/internal.h b/src/core/ext/transport/chttp2/transport/internal.h
index b727965d4351dfb9455e2a92f75117eb592589e3..ea7beb4c2b697d02908f97d93308d4aa9115dfa2 100644
--- a/src/core/ext/transport/chttp2/transport/internal.h
+++ b/src/core/ext/transport/chttp2/transport/internal.h
@@ -212,10 +212,8 @@ struct grpc_chttp2_transport {
 
   grpc_closure write_action_begin_locked;
   grpc_closure write_action;
-  grpc_closure write_action_end;
   grpc_closure write_action_end_locked;
 
-  grpc_closure read_action_begin;
   grpc_closure read_action_locked;
 
   /** incoming read bytes */
@@ -251,6 +249,9 @@ struct grpc_chttp2_transport {
   int64_t announce_incoming_window;
   /** how much window would we like to have for incoming_window */
   uint32_t connection_window_target;
+  /** how much data are we willing to buffer when the WRITE_BUFFER_HINT is set?
+   */
+  uint32_t write_buffer_size;
 
   /** have we seen a goaway */
   uint8_t seen_goaway;
@@ -336,10 +337,8 @@ struct grpc_chttp2_transport {
   /** have we scheduled a destructive cleanup? */
   bool destructive_reclaimer_registered;
   /** benign cleanup closure */
-  grpc_closure benign_reclaimer;
   grpc_closure benign_reclaimer_locked;
   /** destructive cleanup closure */
-  grpc_closure destructive_reclaimer;
   grpc_closure destructive_reclaimer_locked;
 };
 
@@ -407,6 +406,9 @@ struct grpc_chttp2_stream {
   /** Has this stream seen an error.
       If true, then pending incoming frames can be thrown away. */
   bool seen_error;
+  /** Are we buffering writes on this stream? If yes, we won't become writable
+      until there's enough queued up in the flow_controlled_buffer */
+  bool write_buffering;
 
   /** the error that resulted in this stream being read-closed */
   grpc_error *read_closed_error;
diff --git a/src/core/ext/transport/chttp2/transport/parsing.c b/src/core/ext/transport/chttp2/transport/parsing.c
index 5efb49751c3affadb4ff2a3755a8dba387923fae..4fb5dc7bd2bec429c91f6c0249f8c2eb8dd820b7 100644
--- a/src/core/ext/transport/chttp2/transport/parsing.c
+++ b/src/core/ext/transport/chttp2/transport/parsing.c
@@ -336,7 +336,7 @@ static grpc_error *skip_parser(grpc_exec_ctx *exec_ctx, void *parser,
 }
 
 static void skip_header(grpc_exec_ctx *exec_ctx, void *tp, grpc_mdelem *md) {
-  GRPC_MDELEM_UNREF(md);
+  GRPC_MDELEM_UNREF(exec_ctx, md);
 }
 
 static grpc_error *init_skip_frame_parser(grpc_exec_ctx *exec_ctx,
@@ -477,7 +477,7 @@ static void on_initial_header(grpc_exec_ctx *exec_ctx, void *tp,
     grpc_chttp2_incoming_metadata_buffer_set_deadline(
         &s->metadata_buffer[0],
         gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), *cached_timeout));
-    GRPC_MDELEM_UNREF(md);
+    GRPC_MDELEM_UNREF(exec_ctx, md);
   } else {
     const size_t new_size = s->metadata_buffer[0].size + GRPC_MDELEM_LENGTH(md);
     const size_t metadata_size_limit =
@@ -495,7 +495,7 @@ static void on_initial_header(grpc_exec_ctx *exec_ctx, void *tp,
               GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED));
       grpc_chttp2_parsing_become_skip_parser(exec_ctx, t);
       s->seen_error = true;
-      GRPC_MDELEM_UNREF(md);
+      GRPC_MDELEM_UNREF(exec_ctx, md);
     } else {
       grpc_chttp2_incoming_metadata_buffer_add(&s->metadata_buffer[0], md);
     }
@@ -538,7 +538,7 @@ static void on_trailing_header(grpc_exec_ctx *exec_ctx, void *tp,
             GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED));
     grpc_chttp2_parsing_become_skip_parser(exec_ctx, t);
     s->seen_error = true;
-    GRPC_MDELEM_UNREF(md);
+    GRPC_MDELEM_UNREF(exec_ctx, md);
   } else {
     grpc_chttp2_incoming_metadata_buffer_add(&s->metadata_buffer[1], md);
   }
@@ -712,7 +712,7 @@ static grpc_error *init_settings_frame_parser(grpc_exec_ctx *exec_ctx,
     memcpy(t->settings[GRPC_ACKED_SETTINGS], t->settings[GRPC_SENT_SETTINGS],
            GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t));
     grpc_chttp2_hptbl_set_max_bytes(
-        &t->hpack_parser.table,
+        exec_ctx, &t->hpack_parser.table,
         t->settings[GRPC_ACKED_SETTINGS]
                    [GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE]);
     t->sent_local_settings = 0;
diff --git a/src/core/ext/transport/chttp2/transport/writing.c b/src/core/ext/transport/chttp2/transport/writing.c
index 139e7387c4d9a4afebfa08d5e015dbee74f5b453..ef2010af7b9f8c3074c51637adc779cae48dd95d 100644
--- a/src/core/ext/transport/chttp2/transport/writing.c
+++ b/src/core/ext/transport/chttp2/transport/writing.c
@@ -39,6 +39,7 @@
 
 #include "src/core/ext/transport/chttp2/transport/http2_errors.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
 
 static void add_to_write_list(grpc_chttp2_write_cb **list,
                               grpc_chttp2_write_cb *cb) {
@@ -119,7 +120,7 @@ bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx,
     /* send initial metadata if it's available */
     if (!sent_initial_metadata && s->send_initial_metadata) {
       grpc_chttp2_encode_header(
-          &t->hpack_compressor, s->id, s->send_initial_metadata, 0,
+          exec_ctx, &t->hpack_compressor, s->id, s->send_initial_metadata, 0,
           t->settings[GRPC_ACKED_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE],
           &s->stats.outgoing, &t->outbuf);
       s->send_initial_metadata = NULL;
@@ -186,9 +187,9 @@ bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx,
                                   &s->stats.outgoing, &t->outbuf);
         } else {
           grpc_chttp2_encode_header(
-              &t->hpack_compressor, s->id, s->send_trailing_metadata, true,
-              t->settings[GRPC_ACKED_SETTINGS]
-                         [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE],
+              exec_ctx, &t->hpack_compressor, s->id, s->send_trailing_metadata,
+              true, t->settings[GRPC_ACKED_SETTINGS]
+                               [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE],
               &s->stats.outgoing, &t->outbuf);
         }
         s->send_trailing_metadata = NULL;
@@ -254,7 +255,7 @@ void grpc_chttp2_end_write(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
     }
     GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2_writing:end");
   }
-  grpc_slice_buffer_reset_and_unref(&t->outbuf);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &t->outbuf);
   GRPC_ERROR_UNREF(error);
   GPR_TIMER_END("grpc_chttp2_end_write", 0);
 }
diff --git a/src/core/ext/transport/cronet/client/secure/cronet_channel_create.c b/src/core/ext/transport/cronet/client/secure/cronet_channel_create.c
index df1acddcc08ae95a0f17de333f429e6cb5419aa5..477cf07f45dbf81144b1c5c0b7dd298460c34817 100644
--- a/src/core/ext/transport/cronet/client/secure/cronet_channel_create.c
+++ b/src/core/ext/transport/cronet/client/secure/cronet_channel_create.c
@@ -60,7 +60,7 @@ GRPCAPI grpc_channel *grpc_cronet_secure_channel_create(
   ct->host = gpr_malloc(strlen(target) + 1);
   strcpy(ct->host, target);
   gpr_log(GPR_DEBUG,
-          "grpc_create_cronet_transport: cronet_engine = %p, target=%s", engine,
+          "grpc_create_cronet_transport: stream_engine = %p, target=%s", engine,
           ct->host);
 
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
diff --git a/src/core/ext/transport/cronet/transport/cronet_api_dummy.c b/src/core/ext/transport/cronet/transport/cronet_api_dummy.c
index 687026c9fde99af4d164103a2bf90c56e7e10ceb..74327a421425399f825951f5b26f6f561d280e70 100644
--- a/src/core/ext/transport/cronet/transport/cronet_api_dummy.c
+++ b/src/core/ext/transport/cronet/transport/cronet_api_dummy.c
@@ -38,48 +38,46 @@ library, so we can build it in all environments */
 
 #include <grpc/support/log.h>
 
-#include "third_party/objective_c/Cronet/cronet_c_for_grpc.h"
+#include "third_party/Cronet/bidirectional_stream_c.h"
 
 #ifdef GRPC_COMPILE_WITH_CRONET
 /* link with the real CRONET library in the build system */
 #else
 /* Dummy implementation of cronet API just to test for build-ability */
-cronet_bidirectional_stream* cronet_bidirectional_stream_create(
-    cronet_engine* engine, void* annotation,
-    cronet_bidirectional_stream_callback* callback) {
+bidirectional_stream* bidirectional_stream_create(
+    stream_engine* engine, void* annotation,
+    bidirectional_stream_callback* callback) {
   GPR_ASSERT(0);
   return NULL;
 }
 
-int cronet_bidirectional_stream_destroy(cronet_bidirectional_stream* stream) {
+int bidirectional_stream_destroy(bidirectional_stream* stream) {
   GPR_ASSERT(0);
   return 0;
 }
 
-int cronet_bidirectional_stream_start(
-    cronet_bidirectional_stream* stream, const char* url, int priority,
-    const char* method, const cronet_bidirectional_stream_header_array* headers,
-    bool end_of_stream) {
+int bidirectional_stream_start(bidirectional_stream* stream, const char* url,
+                               int priority, const char* method,
+                               const bidirectional_stream_header_array* headers,
+                               bool end_of_stream) {
   GPR_ASSERT(0);
   return 0;
 }
 
-int cronet_bidirectional_stream_read(cronet_bidirectional_stream* stream,
-                                     char* buffer, int capacity) {
+int bidirectional_stream_read(bidirectional_stream* stream, char* buffer,
+                              int capacity) {
   GPR_ASSERT(0);
   return 0;
 }
 
-int cronet_bidirectional_stream_write(cronet_bidirectional_stream* stream,
-                                      const char* buffer, int count,
-                                      bool end_of_stream) {
+int bidirectional_stream_write(bidirectional_stream* stream, const char* buffer,
+                               int count, bool end_of_stream) {
   GPR_ASSERT(0);
   return 0;
 }
 
-int cronet_bidirectional_stream_cancel(cronet_bidirectional_stream* stream) {
+void bidirectional_stream_cancel(bidirectional_stream* stream) {
   GPR_ASSERT(0);
-  return 0;
 }
 
 #endif /* GRPC_COMPILE_WITH_CRONET */
diff --git a/src/core/ext/transport/cronet/transport/cronet_transport.c b/src/core/ext/transport/cronet/transport/cronet_transport.c
index afc59f4b12a62f6479d33e9338b831579746e2dc..b080408565fad34cf68479e407966991412365be 100644
--- a/src/core/ext/transport/cronet/transport/cronet_transport.c
+++ b/src/core/ext/transport/cronet/transport/cronet_transport.c
@@ -49,7 +49,7 @@
 #include "src/core/lib/transport/metadata_batch.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "src/core/lib/transport/transport_impl.h"
-#include "third_party/objective_c/Cronet/cronet_c_for_grpc.h"
+#include "third_party/Cronet/bidirectional_stream_c.h"
 
 #define GRPC_HEADER_SIZE_IN_BYTES 5
 
@@ -86,19 +86,18 @@ enum e_op_id {
 
 /* Cronet callbacks. See cronet_c_for_grpc.h for documentation for each. */
 
-static void on_request_headers_sent(cronet_bidirectional_stream *);
+static void on_request_headers_sent(bidirectional_stream *);
 static void on_response_headers_received(
-    cronet_bidirectional_stream *,
-    const cronet_bidirectional_stream_header_array *, const char *);
-static void on_write_completed(cronet_bidirectional_stream *, const char *);
-static void on_read_completed(cronet_bidirectional_stream *, char *, int);
+    bidirectional_stream *, const bidirectional_stream_header_array *,
+    const char *);
+static void on_write_completed(bidirectional_stream *, const char *);
+static void on_read_completed(bidirectional_stream *, char *, int);
 static void on_response_trailers_received(
-    cronet_bidirectional_stream *,
-    const cronet_bidirectional_stream_header_array *);
-static void on_succeeded(cronet_bidirectional_stream *);
-static void on_failed(cronet_bidirectional_stream *, int);
-static void on_canceled(cronet_bidirectional_stream *);
-static cronet_bidirectional_stream_callback cronet_callbacks = {
+    bidirectional_stream *, const bidirectional_stream_header_array *);
+static void on_succeeded(bidirectional_stream *);
+static void on_failed(bidirectional_stream *, int);
+static void on_canceled(bidirectional_stream *);
+static bidirectional_stream_callback cronet_callbacks = {
     on_request_headers_sent,
     on_response_headers_received,
     on_read_completed,
@@ -111,7 +110,7 @@ static cronet_bidirectional_stream_callback cronet_callbacks = {
 /* Cronet transport object */
 struct grpc_cronet_transport {
   grpc_transport base; /* must be first element in this structure */
-  cronet_engine *engine;
+  stream_engine *engine;
   char *host;
 };
 typedef struct grpc_cronet_transport grpc_cronet_transport;
@@ -176,8 +175,8 @@ struct stream_obj {
   grpc_transport_stream_op *curr_op;
   grpc_cronet_transport curr_ct;
   grpc_stream *curr_gs;
-  cronet_bidirectional_stream *cbs;
-  cronet_bidirectional_stream_header_array header_array;
+  bidirectional_stream *cbs;
+  bidirectional_stream_header_array header_array;
 
   /* Stream level state. Some state will be tracked both at stream and stream_op
    * level */
@@ -344,11 +343,11 @@ static void execute_from_storage(stream_obj *s) {
 /*
   Cronet callback
 */
-static void on_failed(cronet_bidirectional_stream *stream, int net_error) {
+static void on_failed(bidirectional_stream *stream, int net_error) {
   CRONET_LOG(GPR_DEBUG, "on_failed(%p, %d)", stream, net_error);
   stream_obj *s = (stream_obj *)stream->annotation;
   gpr_mu_lock(&s->mu);
-  cronet_bidirectional_stream_destroy(s->cbs);
+  bidirectional_stream_destroy(s->cbs);
   s->state.state_callback_received[OP_FAILED] = true;
   s->cbs = NULL;
   if (s->header_array.headers) {
@@ -367,11 +366,11 @@ static void on_failed(cronet_bidirectional_stream *stream, int net_error) {
 /*
   Cronet callback
 */
-static void on_canceled(cronet_bidirectional_stream *stream) {
+static void on_canceled(bidirectional_stream *stream) {
   CRONET_LOG(GPR_DEBUG, "on_canceled(%p)", stream);
   stream_obj *s = (stream_obj *)stream->annotation;
   gpr_mu_lock(&s->mu);
-  cronet_bidirectional_stream_destroy(s->cbs);
+  bidirectional_stream_destroy(s->cbs);
   s->state.state_callback_received[OP_CANCELED] = true;
   s->cbs = NULL;
   if (s->header_array.headers) {
@@ -390,11 +389,11 @@ static void on_canceled(cronet_bidirectional_stream *stream) {
 /*
   Cronet callback
 */
-static void on_succeeded(cronet_bidirectional_stream *stream) {
+static void on_succeeded(bidirectional_stream *stream) {
   CRONET_LOG(GPR_DEBUG, "on_succeeded(%p)", stream);
   stream_obj *s = (stream_obj *)stream->annotation;
   gpr_mu_lock(&s->mu);
-  cronet_bidirectional_stream_destroy(s->cbs);
+  bidirectional_stream_destroy(s->cbs);
   s->state.state_callback_received[OP_SUCCEEDED] = true;
   s->cbs = NULL;
   free_read_buffer(s);
@@ -405,7 +404,7 @@ static void on_succeeded(cronet_bidirectional_stream *stream) {
 /*
   Cronet callback
 */
-static void on_request_headers_sent(cronet_bidirectional_stream *stream) {
+static void on_request_headers_sent(bidirectional_stream *stream) {
   CRONET_LOG(GPR_DEBUG, "W: on_request_headers_sent(%p)", stream);
   stream_obj *s = (stream_obj *)stream->annotation;
   gpr_mu_lock(&s->mu);
@@ -424,9 +423,10 @@ static void on_request_headers_sent(cronet_bidirectional_stream *stream) {
   Cronet callback
 */
 static void on_response_headers_received(
-    cronet_bidirectional_stream *stream,
-    const cronet_bidirectional_stream_header_array *headers,
+    bidirectional_stream *stream,
+    const bidirectional_stream_header_array *headers,
     const char *negotiated_protocol) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   CRONET_LOG(GPR_DEBUG, "R: on_response_headers_received(%p, %p, %s)", stream,
              headers, negotiated_protocol);
   stream_obj *s = (stream_obj *)stream->annotation;
@@ -438,7 +438,7 @@ static void on_response_headers_received(
     grpc_chttp2_incoming_metadata_buffer_add(
         &s->state.rs.initial_metadata,
         grpc_mdelem_from_metadata_strings(
-            grpc_mdstr_from_string(headers->headers[i].key),
+            &exec_ctx, grpc_mdstr_from_string(headers->headers[i].key),
             grpc_mdstr_from_string(headers->headers[i].value)));
   }
   s->state.state_callback_received[OP_RECV_INITIAL_METADATA] = true;
@@ -450,19 +450,19 @@ static void on_response_headers_received(
     s->state.rs.read_buffer = s->state.rs.grpc_header_bytes;
     s->state.rs.received_bytes = 0;
     s->state.rs.remaining_bytes = GRPC_HEADER_SIZE_IN_BYTES;
-    CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_read(%p)", s->cbs);
-    cronet_bidirectional_stream_read(s->cbs, s->state.rs.read_buffer,
-                                     s->state.rs.remaining_bytes);
+    CRONET_LOG(GPR_DEBUG, "bidirectional_stream_read(%p)", s->cbs);
+    bidirectional_stream_read(s->cbs, s->state.rs.read_buffer,
+                              s->state.rs.remaining_bytes);
   }
   gpr_mu_unlock(&s->mu);
+  grpc_exec_ctx_finish(&exec_ctx);
   execute_from_storage(s);
 }
 
 /*
   Cronet callback
 */
-static void on_write_completed(cronet_bidirectional_stream *stream,
-                               const char *data) {
+static void on_write_completed(bidirectional_stream *stream, const char *data) {
   stream_obj *s = (stream_obj *)stream->annotation;
   CRONET_LOG(GPR_DEBUG, "W: on_write_completed(%p, %s)", stream, data);
   gpr_mu_lock(&s->mu);
@@ -478,7 +478,7 @@ static void on_write_completed(cronet_bidirectional_stream *stream,
 /*
   Cronet callback
 */
-static void on_read_completed(cronet_bidirectional_stream *stream, char *data,
+static void on_read_completed(bidirectional_stream *stream, char *data,
                               int count) {
   stream_obj *s = (stream_obj *)stream->annotation;
   CRONET_LOG(GPR_DEBUG, "R: on_read_completed(%p, %p, %d)", stream, data,
@@ -486,16 +486,16 @@ static void on_read_completed(cronet_bidirectional_stream *stream, char *data,
   gpr_mu_lock(&s->mu);
   s->state.state_callback_received[OP_RECV_MESSAGE] = true;
   if (count > 0 && s->state.flush_read) {
-    CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_read(%p)", s->cbs);
-    cronet_bidirectional_stream_read(s->cbs, s->state.rs.read_buffer, 4096);
+    CRONET_LOG(GPR_DEBUG, "bidirectional_stream_read(%p)", s->cbs);
+    bidirectional_stream_read(s->cbs, s->state.rs.read_buffer, 4096);
     gpr_mu_unlock(&s->mu);
   } else if (count > 0) {
     s->state.rs.received_bytes += count;
     s->state.rs.remaining_bytes -= count;
     if (s->state.rs.remaining_bytes > 0) {
-      CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_read(%p)", s->cbs);
+      CRONET_LOG(GPR_DEBUG, "bidirectional_stream_read(%p)", s->cbs);
       s->state.state_op_done[OP_READ_REQ_MADE] = true;
-      cronet_bidirectional_stream_read(
+      bidirectional_stream_read(
           s->cbs, s->state.rs.read_buffer + s->state.rs.received_bytes,
           s->state.rs.remaining_bytes);
       gpr_mu_unlock(&s->mu);
@@ -518,8 +518,9 @@ static void on_read_completed(cronet_bidirectional_stream *stream, char *data,
   Cronet callback
 */
 static void on_response_trailers_received(
-    cronet_bidirectional_stream *stream,
-    const cronet_bidirectional_stream_header_array *trailers) {
+    bidirectional_stream *stream,
+    const bidirectional_stream_header_array *trailers) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   CRONET_LOG(GPR_DEBUG, "R: on_response_trailers_received(%p,%p)", stream,
              trailers);
   stream_obj *s = (stream_obj *)stream->annotation;
@@ -534,7 +535,7 @@ static void on_response_trailers_received(
     grpc_chttp2_incoming_metadata_buffer_add(
         &s->state.rs.trailing_metadata,
         grpc_mdelem_from_metadata_strings(
-            grpc_mdstr_from_string(trailers->headers[i].key),
+            &exec_ctx, grpc_mdstr_from_string(trailers->headers[i].key),
             grpc_mdstr_from_string(trailers->headers[i].value)));
     s->state.rs.trailing_metadata_valid = true;
     if (0 == strcmp(trailers->headers[i].key, "grpc-status") &&
@@ -548,14 +549,16 @@ static void on_response_trailers_received(
   if (!s->state.state_op_done[OP_SEND_TRAILING_METADATA] &&
       !(s->state.state_op_done[OP_CANCEL_ERROR] ||
         s->state.state_callback_received[OP_FAILED])) {
-    CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_write (%p, 0)", s->cbs);
+    CRONET_LOG(GPR_DEBUG, "bidirectional_stream_write (%p, 0)", s->cbs);
     s->state.state_callback_received[OP_SEND_MESSAGE] = false;
-    cronet_bidirectional_stream_write(s->cbs, "", 0, true);
+    bidirectional_stream_write(s->cbs, "", 0, true);
     s->state.state_op_done[OP_SEND_TRAILING_METADATA] = true;
 
     gpr_mu_unlock(&s->mu);
+    grpc_exec_ctx_finish(&exec_ctx);
   } else {
     gpr_mu_unlock(&s->mu);
+    grpc_exec_ctx_finish(&exec_ctx);
     execute_from_storage(s);
   }
 }
@@ -589,7 +592,7 @@ static void create_grpc_frame(grpc_slice_buffer *write_slice_buffer,
 */
 static void convert_metadata_to_cronet_headers(
     grpc_linked_mdelem *head, const char *host, char **pp_url,
-    cronet_bidirectional_stream_header **pp_headers, size_t *p_num_headers,
+    bidirectional_stream_header **pp_headers, size_t *p_num_headers,
     const char **method) {
   grpc_linked_mdelem *curr = head;
   /* Walk the linked list and get number of header fields */
@@ -600,9 +603,9 @@ static void convert_metadata_to_cronet_headers(
   }
   /* Allocate enough memory. It is freed in the on_request_headers_sent callback
    */
-  cronet_bidirectional_stream_header *headers =
-      (cronet_bidirectional_stream_header *)gpr_malloc(
-          sizeof(cronet_bidirectional_stream_header) * num_headers_available);
+  bidirectional_stream_header *headers =
+      (bidirectional_stream_header *)gpr_malloc(
+          sizeof(bidirectional_stream_header) * num_headers_available);
   *pp_headers = headers;
 
   /* Walk the linked list again, this time copying the header fields.
@@ -828,9 +831,9 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
      * on_failed */
     GPR_ASSERT(s->cbs == NULL);
     GPR_ASSERT(!stream_state->state_op_done[OP_SEND_INITIAL_METADATA]);
-    s->cbs = cronet_bidirectional_stream_create(s->curr_ct.engine, s->curr_gs,
-                                                &cronet_callbacks);
-    CRONET_LOG(GPR_DEBUG, "%p = cronet_bidirectional_stream_create()", s->cbs);
+    s->cbs = bidirectional_stream_create(s->curr_ct.engine, s->curr_gs,
+                                         &cronet_callbacks);
+    CRONET_LOG(GPR_DEBUG, "%p = bidirectional_stream_create()", s->cbs);
     char *url = NULL;
     const char *method = "POST";
     s->header_array.headers = NULL;
@@ -838,10 +841,8 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
         stream_op->send_initial_metadata->list.head, s->curr_ct.host, &url,
         &s->header_array.headers, &s->header_array.count, &method);
     s->header_array.capacity = s->header_array.count;
-    CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_start(%p, %s)", s->cbs,
-               url);
-    cronet_bidirectional_stream_start(s->cbs, url, 0, method, &s->header_array,
-                                      false);
+    CRONET_LOG(GPR_DEBUG, "bidirectional_stream_start(%p, %s)", s->cbs, url);
+    bidirectional_stream_start(s->cbs, url, 0, method, &s->header_array, false);
     stream_state->state_op_done[OP_SEND_INITIAL_METADATA] = true;
     result = ACTION_TAKEN_WITH_CALLBACK;
   } else if (stream_op->recv_initial_metadata &&
@@ -849,17 +850,17 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
                            OP_RECV_INITIAL_METADATA)) {
     CRONET_LOG(GPR_DEBUG, "running: %p  OP_RECV_INITIAL_METADATA", oas);
     if (stream_state->state_op_done[OP_CANCEL_ERROR]) {
-      grpc_exec_ctx_sched(exec_ctx, stream_op->recv_initial_metadata_ready,
-                          GRPC_ERROR_CANCELLED, NULL);
+      grpc_closure_sched(exec_ctx, stream_op->recv_initial_metadata_ready,
+                         GRPC_ERROR_CANCELLED);
     } else if (stream_state->state_callback_received[OP_FAILED]) {
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, stream_op->recv_initial_metadata_ready,
-          make_error_with_desc(GRPC_STATUS_UNAVAILABLE, "Unavailable."), NULL);
+          make_error_with_desc(GRPC_STATUS_UNAVAILABLE, "Unavailable."));
     } else {
       grpc_chttp2_incoming_metadata_buffer_publish(
           &oas->s->state.rs.initial_metadata, stream_op->recv_initial_metadata);
-      grpc_exec_ctx_sched(exec_ctx, stream_op->recv_initial_metadata_ready,
-                          GRPC_ERROR_NONE, NULL);
+      grpc_closure_sched(exec_ctx, stream_op->recv_initial_metadata_ready,
+                         GRPC_ERROR_NONE);
     }
     stream_state->state_op_done[OP_RECV_INITIAL_METADATA] = true;
     result = ACTION_TAKEN_NO_CALLBACK;
@@ -892,11 +893,11 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
         size_t write_buffer_size;
         create_grpc_frame(&write_slice_buffer, &stream_state->ws.write_buffer,
                           &write_buffer_size);
-        CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_write (%p, %p)",
-                   s->cbs, stream_state->ws.write_buffer);
+        CRONET_LOG(GPR_DEBUG, "bidirectional_stream_write (%p, %p)", s->cbs,
+                   stream_state->ws.write_buffer);
         stream_state->state_callback_received[OP_SEND_MESSAGE] = false;
-        cronet_bidirectional_stream_write(s->cbs, stream_state->ws.write_buffer,
-                                          (int)write_buffer_size, false);
+        bidirectional_stream_write(s->cbs, stream_state->ws.write_buffer,
+                                   (int)write_buffer_size, false);
         result = ACTION_TAKEN_WITH_CALLBACK;
       } else {
         result = NO_ACTION_POSSIBLE;
@@ -910,22 +911,22 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
     CRONET_LOG(GPR_DEBUG, "running: %p  OP_RECV_MESSAGE", oas);
     if (stream_state->state_op_done[OP_CANCEL_ERROR]) {
       CRONET_LOG(GPR_DEBUG, "Stream is cancelled.");
-      grpc_exec_ctx_sched(exec_ctx, stream_op->recv_message_ready,
-                          GRPC_ERROR_CANCELLED, NULL);
+      grpc_closure_sched(exec_ctx, stream_op->recv_message_ready,
+                         GRPC_ERROR_CANCELLED);
       stream_state->state_op_done[OP_RECV_MESSAGE] = true;
       result = ACTION_TAKEN_NO_CALLBACK;
     } else if (stream_state->state_callback_received[OP_FAILED]) {
       CRONET_LOG(GPR_DEBUG, "Stream failed.");
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, stream_op->recv_message_ready,
-          make_error_with_desc(GRPC_STATUS_UNAVAILABLE, "Unavailable."), NULL);
+          make_error_with_desc(GRPC_STATUS_UNAVAILABLE, "Unavailable."));
       stream_state->state_op_done[OP_RECV_MESSAGE] = true;
       result = ACTION_TAKEN_NO_CALLBACK;
     } else if (stream_state->rs.read_stream_closed == true) {
       /* No more data will be received */
       CRONET_LOG(GPR_DEBUG, "read stream closed");
-      grpc_exec_ctx_sched(exec_ctx, stream_op->recv_message_ready,
-                          GRPC_ERROR_NONE, NULL);
+      grpc_closure_sched(exec_ctx, stream_op->recv_message_ready,
+                         GRPC_ERROR_NONE);
       stream_state->state_op_done[OP_RECV_MESSAGE] = true;
       oas->state.state_op_done[OP_RECV_MESSAGE] = true;
       result = ACTION_TAKEN_NO_CALLBACK;
@@ -944,11 +945,11 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
           GPR_ASSERT(stream_state->rs.read_buffer);
           stream_state->rs.remaining_bytes = stream_state->rs.length_field;
           stream_state->rs.received_bytes = 0;
-          CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_read(%p)", s->cbs);
+          CRONET_LOG(GPR_DEBUG, "bidirectional_stream_read(%p)", s->cbs);
           stream_state->state_op_done[OP_READ_REQ_MADE] =
               true; /* Indicates that at least one read request has been made */
-          cronet_bidirectional_stream_read(s->cbs, stream_state->rs.read_buffer,
-                                           stream_state->rs.remaining_bytes);
+          bidirectional_stream_read(s->cbs, stream_state->rs.read_buffer,
+                                    stream_state->rs.remaining_bytes);
           result = ACTION_TAKEN_WITH_CALLBACK;
         } else {
           stream_state->rs.remaining_bytes = 0;
@@ -958,8 +959,8 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
                                         &stream_state->rs.read_slice_buffer, 0);
           *((grpc_byte_buffer **)stream_op->recv_message) =
               (grpc_byte_buffer *)&stream_state->rs.sbs;
-          grpc_exec_ctx_sched(exec_ctx, stream_op->recv_message_ready,
-                              GRPC_ERROR_NONE, NULL);
+          grpc_closure_sched(exec_ctx, stream_op->recv_message_ready,
+                             GRPC_ERROR_NONE);
           stream_state->state_op_done[OP_RECV_MESSAGE] = true;
           oas->state.state_op_done[OP_RECV_MESSAGE] = true;
           result = ACTION_TAKEN_NO_CALLBACK;
@@ -969,11 +970,11 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
         stream_state->rs.read_buffer = stream_state->rs.grpc_header_bytes;
         stream_state->rs.remaining_bytes = GRPC_HEADER_SIZE_IN_BYTES;
         stream_state->rs.received_bytes = 0;
-        CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_read(%p)", s->cbs);
+        CRONET_LOG(GPR_DEBUG, "bidirectional_stream_read(%p)", s->cbs);
         stream_state->state_op_done[OP_READ_REQ_MADE] =
             true; /* Indicates that at least one read request has been made */
-        cronet_bidirectional_stream_read(s->cbs, stream_state->rs.read_buffer,
-                                         stream_state->rs.remaining_bytes);
+        bidirectional_stream_read(s->cbs, stream_state->rs.read_buffer,
+                                  stream_state->rs.remaining_bytes);
         result = ACTION_TAKEN_WITH_CALLBACK;
       } else {
         result = NO_ACTION_POSSIBLE;
@@ -993,8 +994,8 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
                                     &stream_state->rs.read_slice_buffer, 0);
       *((grpc_byte_buffer **)stream_op->recv_message) =
           (grpc_byte_buffer *)&stream_state->rs.sbs;
-      grpc_exec_ctx_sched(exec_ctx, stream_op->recv_message_ready,
-                          GRPC_ERROR_NONE, NULL);
+      grpc_closure_sched(exec_ctx, stream_op->recv_message_ready,
+                         GRPC_ERROR_NONE);
       stream_state->state_op_done[OP_RECV_MESSAGE] = true;
       oas->state.state_op_done[OP_RECV_MESSAGE] = true;
       /* Do an extra read to trigger on_succeeded() callback in case connection
@@ -1003,9 +1004,9 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
       stream_state->rs.received_bytes = 0;
       stream_state->rs.remaining_bytes = GRPC_HEADER_SIZE_IN_BYTES;
       stream_state->rs.length_field_received = false;
-      CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_read(%p)", s->cbs);
-      cronet_bidirectional_stream_read(s->cbs, stream_state->rs.read_buffer,
-                                       stream_state->rs.remaining_bytes);
+      CRONET_LOG(GPR_DEBUG, "bidirectional_stream_read(%p)", s->cbs);
+      bidirectional_stream_read(s->cbs, stream_state->rs.read_buffer,
+                                stream_state->rs.remaining_bytes);
       result = ACTION_TAKEN_NO_CALLBACK;
     }
   } else if (stream_op->recv_trailing_metadata &&
@@ -1028,10 +1029,9 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
       result = NO_ACTION_POSSIBLE;
       CRONET_LOG(GPR_DEBUG, "Stream is either cancelled or failed.");
     } else {
-      CRONET_LOG(GPR_DEBUG, "cronet_bidirectional_stream_write (%p, 0)",
-                 s->cbs);
+      CRONET_LOG(GPR_DEBUG, "bidirectional_stream_write (%p, 0)", s->cbs);
       stream_state->state_callback_received[OP_SEND_MESSAGE] = false;
-      cronet_bidirectional_stream_write(s->cbs, "", 0, true);
+      bidirectional_stream_write(s->cbs, "", 0, true);
       result = ACTION_TAKEN_WITH_CALLBACK;
     }
     stream_state->state_op_done[OP_SEND_TRAILING_METADATA] = true;
@@ -1039,9 +1039,9 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
              op_can_be_run(stream_op, stream_state, &oas->state,
                            OP_CANCEL_ERROR)) {
     CRONET_LOG(GPR_DEBUG, "running: %p  OP_CANCEL_ERROR", oas);
-    CRONET_LOG(GPR_DEBUG, "W: cronet_bidirectional_stream_cancel(%p)", s->cbs);
+    CRONET_LOG(GPR_DEBUG, "W: bidirectional_stream_cancel(%p)", s->cbs);
     if (s->cbs) {
-      cronet_bidirectional_stream_cancel(s->cbs);
+      bidirectional_stream_cancel(s->cbs);
       result = ACTION_TAKEN_WITH_CALLBACK;
     } else {
       result = ACTION_TAKEN_NO_CALLBACK;
@@ -1055,18 +1055,17 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
                            OP_ON_COMPLETE)) {
     CRONET_LOG(GPR_DEBUG, "running: %p  OP_ON_COMPLETE", oas);
     if (stream_state->state_op_done[OP_CANCEL_ERROR]) {
-      grpc_exec_ctx_sched(exec_ctx, stream_op->on_complete,
-                          GRPC_ERROR_REF(stream_state->cancel_error), NULL);
+      grpc_closure_sched(exec_ctx, stream_op->on_complete,
+                         GRPC_ERROR_REF(stream_state->cancel_error));
     } else if (stream_state->state_callback_received[OP_FAILED]) {
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, stream_op->on_complete,
-          make_error_with_desc(GRPC_STATUS_UNAVAILABLE, "Unavailable."), NULL);
+          make_error_with_desc(GRPC_STATUS_UNAVAILABLE, "Unavailable."));
     } else {
       /* All actions in this stream_op are complete. Call the on_complete
        * callback
        */
-      grpc_exec_ctx_sched(exec_ctx, stream_op->on_complete, GRPC_ERROR_NONE,
-                          NULL);
+      grpc_closure_sched(exec_ctx, stream_op->on_complete, GRPC_ERROR_NONE);
     }
     oas->state.state_op_done[OP_ON_COMPLETE] = true;
     oas->done = true;
@@ -1139,18 +1138,17 @@ static void perform_stream_op(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
       header_has_authority(op->send_initial_metadata->list.head)) {
     /* Cronet does not support :authority header field. We cancel the call when
        this field is present in metadata */
-    cronet_bidirectional_stream_header_array header_array;
-    cronet_bidirectional_stream_header *header;
-    cronet_bidirectional_stream cbs;
+    bidirectional_stream_header_array header_array;
+    bidirectional_stream_header *header;
+    bidirectional_stream cbs;
     CRONET_LOG(GPR_DEBUG,
                ":authority header is provided but not supported;"
                " cancel operations");
     /* Notify application that operation is cancelled by forging trailers */
     header_array.count = 1;
     header_array.capacity = 1;
-    header_array.headers =
-        gpr_malloc(sizeof(cronet_bidirectional_stream_header));
-    header = (cronet_bidirectional_stream_header *)header_array.headers;
+    header_array.headers = gpr_malloc(sizeof(bidirectional_stream_header));
+    header = (bidirectional_stream_header *)header_array.headers;
     header->key = "grpc-status";
     header->value = "1"; /* Return status GRPC_STATUS_CANCELLED */
     cbs.annotation = (void *)s;
diff --git a/src/core/lib/README.md b/src/core/lib/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..69b6bce2d9ff5d1ee1b238dc68e11f09a1673c95
--- /dev/null
+++ b/src/core/lib/README.md
@@ -0,0 +1,6 @@
+Required elements of gRPC Core: Each module in this directory is required to
+build gRPC. If it's possible to envisage a configuration where code is not
+required, then that code belongs in ext/ instead.
+
+NOTE: The movement of code between lib and ext is an ongoing effort, so this
+directory currently contains too much of the core library.
diff --git a/src/core/lib/channel/README.md b/src/core/lib/channel/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..2dfcfe6e662322fc13a246bab166a88925f85694
--- /dev/null
+++ b/src/core/lib/channel/README.md
@@ -0,0 +1,4 @@
+# Channel
+
+Provides channel/call stack implementation, and implementation of common filters
+for that implementation.
diff --git a/src/core/lib/channel/channel_args.c b/src/core/lib/channel/channel_args.c
index 401a2ad4fe551271e6a551fabdfbfee219ee4f67..1a099ac437a19abcc89dee19bf67309af9a8a2ea 100644
--- a/src/core/lib/channel/channel_args.c
+++ b/src/core/lib/channel/channel_args.c
@@ -184,7 +184,7 @@ grpc_channel_args *grpc_channel_args_normalize(const grpc_channel_args *a) {
   return b;
 }
 
-void grpc_channel_args_destroy(grpc_channel_args *a) {
+void grpc_channel_args_destroy(grpc_exec_ctx *exec_ctx, grpc_channel_args *a) {
   size_t i;
   if (!a) return;
   for (i = 0; i < a->num_args; i++) {
@@ -195,7 +195,8 @@ void grpc_channel_args_destroy(grpc_channel_args *a) {
       case GRPC_ARG_INTEGER:
         break;
       case GRPC_ARG_POINTER:
-        a->args[i].value.pointer.vtable->destroy(a->args[i].value.pointer.p);
+        a->args[i].value.pointer.vtable->destroy(exec_ctx,
+                                                 a->args[i].value.pointer.p);
         break;
     }
     gpr_free(a->args[i].key);
@@ -249,7 +250,8 @@ static int find_compression_algorithm_states_bitset(const grpc_channel_args *a,
 }
 
 grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
-    grpc_channel_args **a, grpc_compression_algorithm algorithm, int state) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_args **a,
+    grpc_compression_algorithm algorithm, int state) {
   int *states_arg = NULL;
   grpc_channel_args *result = *a;
   const int states_arg_found =
@@ -282,7 +284,7 @@ grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
       GPR_BITCLEAR((unsigned *)&tmp.value.integer, algorithm);
     }
     result = grpc_channel_args_copy_and_add(*a, &tmp, 1);
-    grpc_channel_args_destroy(*a);
+    grpc_channel_args_destroy(exec_ctx, *a);
     *a = result;
   }
   return result;
diff --git a/src/core/lib/channel/channel_args.h b/src/core/lib/channel/channel_args.h
index 88fc0e37a35d76f2390f69c2740f11b3c4bea5c6..5c7d31f8bba0306ab841bc68ea7db81790ff0f3e 100644
--- a/src/core/lib/channel/channel_args.h
+++ b/src/core/lib/channel/channel_args.h
@@ -68,7 +68,7 @@ grpc_channel_args *grpc_channel_args_merge(const grpc_channel_args *a,
                                            const grpc_channel_args *b);
 
 /** Destroy arguments created by \a grpc_channel_args_copy */
-void grpc_channel_args_destroy(grpc_channel_args *a);
+void grpc_channel_args_destroy(grpc_exec_ctx *exec_ctx, grpc_channel_args *a);
 
 /** Returns the compression algorithm set in \a a. */
 grpc_compression_algorithm grpc_channel_args_get_compression_algorithm(
@@ -88,7 +88,8 @@ grpc_channel_args *grpc_channel_args_set_compression_algorithm(
  * modified to point to the returned instance (which may be different from the
  * input value of \a a). */
 grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
-    grpc_channel_args **a, grpc_compression_algorithm algorithm, int enabled);
+    grpc_exec_ctx *exec_ctx, grpc_channel_args **a,
+    grpc_compression_algorithm algorithm, int enabled);
 
 /** Returns the bitset representing the support state (true for enabled, false
  * for disabled) for compression algorithms.
diff --git a/src/core/lib/channel/channel_stack.c b/src/core/lib/channel/channel_stack.c
index 999ad5f50743f2eb8dd3cc70e35e01ec82fa86e0..8f08b427fb3d3922614bd01b1b4cf32f13c3c0c5 100644
--- a/src/core/lib/channel/channel_stack.c
+++ b/src/core/lib/channel/channel_stack.c
@@ -102,13 +102,11 @@ grpc_call_element *grpc_call_stack_element(grpc_call_stack *call_stack,
   return CALL_ELEMS_FROM_STACK(call_stack) + index;
 }
 
-void grpc_channel_stack_init(grpc_exec_ctx *exec_ctx, int initial_refs,
-                             grpc_iomgr_cb_func destroy, void *destroy_arg,
-                             const grpc_channel_filter **filters,
-                             size_t filter_count,
-                             const grpc_channel_args *channel_args,
-                             grpc_transport *optional_transport,
-                             const char *name, grpc_channel_stack *stack) {
+grpc_error *grpc_channel_stack_init(
+    grpc_exec_ctx *exec_ctx, int initial_refs, grpc_iomgr_cb_func destroy,
+    void *destroy_arg, const grpc_channel_filter **filters, size_t filter_count,
+    const grpc_channel_args *channel_args, grpc_transport *optional_transport,
+    const char *name, grpc_channel_stack *stack) {
   size_t call_size =
       ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(grpc_call_stack)) +
       ROUND_UP_TO_ALIGNMENT_SIZE(filter_count * sizeof(grpc_call_element));
@@ -126,6 +124,7 @@ void grpc_channel_stack_init(grpc_exec_ctx *exec_ctx, int initial_refs,
       ROUND_UP_TO_ALIGNMENT_SIZE(filter_count * sizeof(grpc_channel_element));
 
   /* init per-filter data */
+  grpc_error *first_error = GRPC_ERROR_NONE;
   for (i = 0; i < filter_count; i++) {
     args.channel_stack = stack;
     args.channel_args = channel_args;
@@ -134,7 +133,15 @@ void grpc_channel_stack_init(grpc_exec_ctx *exec_ctx, int initial_refs,
     args.is_last = i == (filter_count - 1);
     elems[i].filter = filters[i];
     elems[i].channel_data = user_data;
-    elems[i].filter->init_channel_elem(exec_ctx, &elems[i], &args);
+    grpc_error *error =
+        elems[i].filter->init_channel_elem(exec_ctx, &elems[i], &args);
+    if (error != GRPC_ERROR_NONE) {
+      if (first_error == GRPC_ERROR_NONE) {
+        first_error = error;
+      } else {
+        GRPC_ERROR_UNREF(error);
+      }
+    }
     user_data += ROUND_UP_TO_ALIGNMENT_SIZE(filters[i]->sizeof_channel_data);
     call_size += ROUND_UP_TO_ALIGNMENT_SIZE(filters[i]->sizeof_call_data);
   }
@@ -144,6 +151,7 @@ void grpc_channel_stack_init(grpc_exec_ctx *exec_ctx, int initial_refs,
              grpc_channel_stack_size(filters, filter_count));
 
   stack->call_stack_size = call_size;
+  return first_error;
 }
 
 void grpc_channel_stack_destroy(grpc_exec_ctx *exec_ctx,
@@ -289,7 +297,8 @@ void grpc_call_element_send_cancel(grpc_exec_ctx *exec_ctx,
   grpc_transport_stream_op *op = gpr_malloc(sizeof(*op));
   memset(op, 0, sizeof(*op));
   op->cancel_error = GRPC_ERROR_CANCELLED;
-  op->on_complete = grpc_closure_create(destroy_op, op);
+  op->on_complete =
+      grpc_closure_create(destroy_op, op, grpc_schedule_on_exec_ctx);
   elem->filter->start_transport_stream_op(exec_ctx, elem, op);
 }
 
@@ -299,8 +308,9 @@ void grpc_call_element_send_cancel_with_message(grpc_exec_ctx *exec_ctx,
                                                 grpc_slice *optional_message) {
   grpc_transport_stream_op *op = gpr_malloc(sizeof(*op));
   memset(op, 0, sizeof(*op));
-  op->on_complete = grpc_closure_create(destroy_op, op);
-  grpc_transport_stream_op_add_cancellation_with_message(op, status,
+  op->on_complete =
+      grpc_closure_create(destroy_op, op, grpc_schedule_on_exec_ctx);
+  grpc_transport_stream_op_add_cancellation_with_message(exec_ctx, op, status,
                                                          optional_message);
   elem->filter->start_transport_stream_op(exec_ctx, elem, op);
 }
@@ -311,7 +321,8 @@ void grpc_call_element_send_close_with_message(grpc_exec_ctx *exec_ctx,
                                                grpc_slice *optional_message) {
   grpc_transport_stream_op *op = gpr_malloc(sizeof(*op));
   memset(op, 0, sizeof(*op));
-  op->on_complete = grpc_closure_create(destroy_op, op);
-  grpc_transport_stream_op_add_close(op, status, optional_message);
+  op->on_complete =
+      grpc_closure_create(destroy_op, op, grpc_schedule_on_exec_ctx);
+  grpc_transport_stream_op_add_close(exec_ctx, op, status, optional_message);
   elem->filter->start_transport_stream_op(exec_ctx, elem, op);
 }
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index 004643d45f6cb5b532c685d21fa04ae05b0319ce..d9d3a8523358aba2863878ddc23e853835953daa 100644
--- a/src/core/lib/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -34,6 +34,13 @@
 #ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H
 #define GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H
 
+//////////////////////////////////////////////////////////////////////////////
+// IMPORTANT NOTE:
+//
+// When you update this API, please make the corresponding changes to
+// the C++ API in src/cpp/common/channel_filter.{h,cc}
+//////////////////////////////////////////////////////////////////////////////
+
 /* A channel filter defines how operations on a channel are implemented.
    Channel filters are chained together to create full channels, and if those
    chains are linear, then channel stacks provide a mechanism to minimize
@@ -146,8 +153,9 @@ typedef struct {
      is_first, is_last designate this elements position in the stack, and are
      useful for asserting correct configuration by upper layer code.
      The filter does not need to do any chaining */
-  void (*init_channel_elem)(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
-                            grpc_channel_element_args *args);
+  grpc_error *(*init_channel_elem)(grpc_exec_ctx *exec_ctx,
+                                   grpc_channel_element *elem,
+                                   grpc_channel_element_args *args);
   /* Destroy per channel data.
      The filter does not need to do any chaining */
   void (*destroy_channel_elem)(grpc_exec_ctx *exec_ctx,
@@ -214,12 +222,11 @@ grpc_call_element *grpc_call_stack_element(grpc_call_stack *stack, size_t i);
 size_t grpc_channel_stack_size(const grpc_channel_filter **filters,
                                size_t filter_count);
 /* Initialize a channel stack given some filters */
-void grpc_channel_stack_init(grpc_exec_ctx *exec_ctx, int initial_refs,
-                             grpc_iomgr_cb_func destroy, void *destroy_arg,
-                             const grpc_channel_filter **filters,
-                             size_t filter_count, const grpc_channel_args *args,
-                             grpc_transport *optional_transport,
-                             const char *name, grpc_channel_stack *stack);
+grpc_error *grpc_channel_stack_init(
+    grpc_exec_ctx *exec_ctx, int initial_refs, grpc_iomgr_cb_func destroy,
+    void *destroy_arg, const grpc_channel_filter **filters, size_t filter_count,
+    const grpc_channel_args *args, grpc_transport *optional_transport,
+    const char *name, grpc_channel_stack *stack);
 /* Destroy a channel stack */
 void grpc_channel_stack_destroy(grpc_exec_ctx *exec_ctx,
                                 grpc_channel_stack *stack);
diff --git a/src/core/lib/channel/channel_stack_builder.c b/src/core/lib/channel/channel_stack_builder.c
index eda4968f486cc6a7682daf1d2eaacb928f8bdd6f..5f9e3b453980d8053256e22c0406e2ac703210c6 100644
--- a/src/core/lib/channel/channel_stack_builder.c
+++ b/src/core/lib/channel/channel_stack_builder.c
@@ -138,9 +138,10 @@ void grpc_channel_stack_builder_set_name(grpc_channel_stack_builder *builder,
 }
 
 void grpc_channel_stack_builder_set_channel_arguments(
-    grpc_channel_stack_builder *builder, const grpc_channel_args *args) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder,
+    const grpc_channel_args *args) {
   if (builder->args != NULL) {
-    grpc_channel_args_destroy(builder->args);
+    grpc_channel_args_destroy(exec_ctx, builder->args);
   }
   builder->args = grpc_channel_args_copy(args);
 }
@@ -213,7 +214,8 @@ bool grpc_channel_stack_builder_add_filter_after(
   return true;
 }
 
-void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder *builder) {
+void grpc_channel_stack_builder_destroy(grpc_exec_ctx *exec_ctx,
+                                        grpc_channel_stack_builder *builder) {
   filter_node *p = builder->begin.next;
   while (p != &builder->end) {
     filter_node *next = p->next;
@@ -221,17 +223,16 @@ void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder *builder) {
     p = next;
   }
   if (builder->args != NULL) {
-    grpc_channel_args_destroy(builder->args);
+    grpc_channel_args_destroy(exec_ctx, builder->args);
   }
   gpr_free(builder->target);
   gpr_free(builder);
 }
 
-void *grpc_channel_stack_builder_finish(grpc_exec_ctx *exec_ctx,
-                                        grpc_channel_stack_builder *builder,
-                                        size_t prefix_bytes, int initial_refs,
-                                        grpc_iomgr_cb_func destroy,
-                                        void *destroy_arg) {
+grpc_error *grpc_channel_stack_builder_finish(
+    grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder,
+    size_t prefix_bytes, int initial_refs, grpc_iomgr_cb_func destroy,
+    void *destroy_arg, void **result) {
   // count the number of filters
   size_t num_filters = 0;
   for (filter_node *p = builder->begin.next; p != &builder->end; p = p->next) {
@@ -250,28 +251,35 @@ void *grpc_channel_stack_builder_finish(grpc_exec_ctx *exec_ctx,
   size_t channel_stack_size = grpc_channel_stack_size(filters, num_filters);
 
   // allocate memory, with prefix_bytes followed by channel_stack_size
-  char *result = gpr_malloc(prefix_bytes + channel_stack_size);
+  *result = gpr_malloc(prefix_bytes + channel_stack_size);
   // fetch a pointer to the channel stack
   grpc_channel_stack *channel_stack =
-      (grpc_channel_stack *)(result + prefix_bytes);
+      (grpc_channel_stack *)((char *)(*result) + prefix_bytes);
   // and initialize it
-  grpc_channel_stack_init(exec_ctx, initial_refs, destroy,
-                          destroy_arg == NULL ? result : destroy_arg, filters,
-                          num_filters, builder->args, builder->transport,
-                          builder->name, channel_stack);
-
-  // run post-initialization functions
-  i = 0;
-  for (filter_node *p = builder->begin.next; p != &builder->end; p = p->next) {
-    if (p->init != NULL) {
-      p->init(channel_stack, grpc_channel_stack_element(channel_stack, i),
-              p->init_arg);
+  grpc_error *error = grpc_channel_stack_init(
+      exec_ctx, initial_refs, destroy,
+      destroy_arg == NULL ? *result : destroy_arg, filters, num_filters,
+      builder->args, builder->transport, builder->name, channel_stack);
+
+  if (error != GRPC_ERROR_NONE) {
+    grpc_channel_stack_destroy(exec_ctx, channel_stack);
+    gpr_free(*result);
+    *result = NULL;
+  } else {
+    // run post-initialization functions
+    i = 0;
+    for (filter_node *p = builder->begin.next; p != &builder->end;
+         p = p->next) {
+      if (p->init != NULL) {
+        p->init(channel_stack, grpc_channel_stack_element(channel_stack, i),
+                p->init_arg);
+      }
+      i++;
     }
-    i++;
   }
 
-  grpc_channel_stack_builder_destroy(builder);
+  grpc_channel_stack_builder_destroy(exec_ctx, builder);
   gpr_free((grpc_channel_filter **)filters);
 
-  return result;
+  return error;
 }
diff --git a/src/core/lib/channel/channel_stack_builder.h b/src/core/lib/channel/channel_stack_builder.h
index 4a00f7bfdbdb89243263bc3db97265f69df96812..8adf38e27bff0a4a232cc7678b9b3908591e85fd 100644
--- a/src/core/lib/channel/channel_stack_builder.h
+++ b/src/core/lib/channel/channel_stack_builder.h
@@ -73,7 +73,8 @@ grpc_transport *grpc_channel_stack_builder_get_transport(
 
 /// Set channel arguments: copies args
 void grpc_channel_stack_builder_set_channel_arguments(
-    grpc_channel_stack_builder *builder, const grpc_channel_args *args);
+    grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder,
+    const grpc_channel_args *args);
 
 /// Return a borrowed pointer to the channel arguments
 const grpc_channel_args *grpc_channel_stack_builder_get_channel_arguments(
@@ -146,19 +147,19 @@ bool grpc_channel_stack_builder_append_filter(
 void grpc_channel_stack_builder_iterator_destroy(
     grpc_channel_stack_builder_iterator *iterator);
 
-/// Destroy the builder, return the freshly minted channel stack
+/// Destroy the builder, return the freshly minted channel stack in \a result.
 /// Allocates \a prefix_bytes bytes before the channel stack
 /// Returns the base pointer of the allocated block
 /// \a initial_refs, \a destroy, \a destroy_arg are as per
 /// grpc_channel_stack_init
-void *grpc_channel_stack_builder_finish(grpc_exec_ctx *exec_ctx,
-                                        grpc_channel_stack_builder *builder,
-                                        size_t prefix_bytes, int initial_refs,
-                                        grpc_iomgr_cb_func destroy,
-                                        void *destroy_arg);
+grpc_error *grpc_channel_stack_builder_finish(
+    grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder,
+    size_t prefix_bytes, int initial_refs, grpc_iomgr_cb_func destroy,
+    void *destroy_arg, void **result);
 
 /// Destroy the builder without creating a channel stack
-void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder *builder);
+void grpc_channel_stack_builder_destroy(grpc_exec_ctx *exec_ctx,
+                                        grpc_channel_stack_builder *builder);
 
 extern int grpc_trace_channel_stack_builder;
 
diff --git a/src/core/lib/channel/compress_filter.c b/src/core/lib/channel/compress_filter.c
index 2874d63fc780a7acece94af4e3107725321e2916..337c194b798fc4531c18abb978a0ff0ab7031c53 100644
--- a/src/core/lib/channel/compress_filter.c
+++ b/src/core/lib/channel/compress_filter.c
@@ -44,6 +44,7 @@
 #include "src/core/lib/compression/algorithm_metadata.h"
 #include "src/core/lib/compression/message_compress.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 
@@ -82,7 +83,8 @@ typedef struct channel_data {
 /** For each \a md element from the incoming metadata, filter out the entry for
  * "grpc-encoding", using its value to populate the call data's
  * compression_algorithm field. */
-static grpc_mdelem *compression_md_filter(void *user_data, grpc_mdelem *md) {
+static grpc_mdelem *compression_md_filter(grpc_exec_ctx *exec_ctx,
+                                          void *user_data, grpc_mdelem *md) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
   channel_data *channeld = elem->channel_data;
@@ -130,12 +132,14 @@ static int skip_compression(grpc_call_element *elem, uint32_t flags) {
 
 /** Filter initial metadata */
 static void process_send_initial_metadata(
-    grpc_call_element *elem, grpc_metadata_batch *initial_metadata) {
+    grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
+    grpc_metadata_batch *initial_metadata) {
   call_data *calld = elem->call_data;
   channel_data *channeld = elem->channel_data;
   /* Parse incoming request for compression. If any, it'll be available
    * at calld->compression_algorithm */
-  grpc_metadata_batch_filter(initial_metadata, compression_md_filter, elem);
+  grpc_metadata_batch_filter(exec_ctx, initial_metadata, compression_md_filter,
+                             elem);
   if (!calld->has_compression_algorithm) {
     /* If no algorithm was found in the metadata and we aren't
      * exceptionally skipping compression, fall back to the channel
@@ -161,7 +165,7 @@ static void continue_send_message(grpc_exec_ctx *exec_ctx,
 static void send_done(grpc_exec_ctx *exec_ctx, void *elemp, grpc_error *error) {
   grpc_call_element *elem = elemp;
   call_data *calld = elem->call_data;
-  grpc_slice_buffer_reset_and_unref(&calld->slices);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &calld->slices);
   calld->post_send->cb(exec_ctx, calld->post_send->cb_arg, error);
 }
 
@@ -171,8 +175,8 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx,
   int did_compress;
   grpc_slice_buffer tmp;
   grpc_slice_buffer_init(&tmp);
-  did_compress =
-      grpc_msg_compress(calld->compression_algorithm, &calld->slices, &tmp);
+  did_compress = grpc_msg_compress(exec_ctx, calld->compression_algorithm,
+                                   &calld->slices, &tmp);
   if (did_compress) {
     if (grpc_compression_trace) {
       char *algo_name;
@@ -199,7 +203,7 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx,
     }
   }
 
-  grpc_slice_buffer_destroy(&tmp);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &tmp);
 
   grpc_slice_buffer_stream_init(&calld->replacement_stream, &calld->slices,
                                 calld->send_flags);
@@ -243,7 +247,7 @@ static void compress_start_transport_stream_op(grpc_exec_ctx *exec_ctx,
   GPR_TIMER_BEGIN("compress_start_transport_stream_op", 0);
 
   if (op->send_initial_metadata) {
-    process_send_initial_metadata(elem, op->send_initial_metadata);
+    process_send_initial_metadata(exec_ctx, elem, op->send_initial_metadata);
   }
   if (op->send_message != NULL &&
       !skip_compression(elem, op->send_message->flags)) {
@@ -269,8 +273,10 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
   /* initialize members */
   grpc_slice_buffer_init(&calld->slices);
   calld->has_compression_algorithm = 0;
-  grpc_closure_init(&calld->got_slice, got_slice, elem);
-  grpc_closure_init(&calld->send_done, send_done, elem);
+  grpc_closure_init(&calld->got_slice, got_slice, elem,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&calld->send_done, send_done, elem,
+                    grpc_schedule_on_exec_ctx);
 
   return GRPC_ERROR_NONE;
 }
@@ -281,13 +287,13 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               void *ignored) {
   /* grab pointers to our data from the call element */
   call_data *calld = elem->call_data;
-  grpc_slice_buffer_destroy(&calld->slices);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &calld->slices);
 }
 
 /* Constructor for channel_data */
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   channel_data *channeld = elem->channel_data;
 
   channeld->enabled_algorithms_bitset =
@@ -315,6 +321,7 @@ static void init_channel_elem(grpc_exec_ctx *exec_ctx,
   }
 
   GPR_ASSERT(!args->is_last);
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel data */
diff --git a/src/core/lib/channel/connected_channel.c b/src/core/lib/channel/connected_channel.c
index 038e819f7207cfac963ff380f672372a6d222fc7..ccc0619e1cbb14226298dcc636140c079c8d4531 100644
--- a/src/core/lib/channel/connected_channel.c
+++ b/src/core/lib/channel/connected_channel.c
@@ -114,12 +114,13 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 }
 
 /* Constructor for channel_data */
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   channel_data *cd = (channel_data *)elem->channel_data;
   GPR_ASSERT(args->is_last);
   cd->transport = NULL;
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel_data */
@@ -170,7 +171,8 @@ static void bind_transport(grpc_channel_stack *channel_stack,
   channel_stack->call_stack_size += grpc_transport_stream_size(t);
 }
 
-bool grpc_add_connected_filter(grpc_channel_stack_builder *builder,
+bool grpc_add_connected_filter(grpc_exec_ctx *exec_ctx,
+                               grpc_channel_stack_builder *builder,
                                void *arg_must_be_null) {
   GPR_ASSERT(arg_must_be_null == NULL);
   grpc_transport *t = grpc_channel_stack_builder_get_transport(builder);
diff --git a/src/core/lib/channel/connected_channel.h b/src/core/lib/channel/connected_channel.h
index 3142d647b7e4257a14106a41f9ef7c34164739b0..3585c0ecbc1a992ca2acd01b06f10ba0c6efa2f4 100644
--- a/src/core/lib/channel/connected_channel.h
+++ b/src/core/lib/channel/connected_channel.h
@@ -36,7 +36,8 @@
 
 #include "src/core/lib/channel/channel_stack_builder.h"
 
-bool grpc_add_connected_filter(grpc_channel_stack_builder *builder,
+bool grpc_add_connected_filter(grpc_exec_ctx *exec_ctx,
+                               grpc_channel_stack_builder *builder,
                                void *arg_must_be_null);
 
 #endif /* GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H */
diff --git a/src/core/lib/channel/context.h b/src/core/lib/channel/context.h
index 071c5f695c56cdb19536b43ce04924eec1b37918..6c931ad28aec4464f7fcc55afdb68c2585b69e7d 100644
--- a/src/core/lib/channel/context.h
+++ b/src/core/lib/channel/context.h
@@ -47,6 +47,9 @@ typedef enum {
   /// Value is a \a census_context.
   GRPC_CONTEXT_TRACING,
 
+  /// Reserved for traffic_class_context.
+  GRPC_CONTEXT_TRAFFIC,
+
   GRPC_CONTEXT_COUNT
 } grpc_context_index;
 
diff --git a/src/core/lib/channel/deadline_filter.c b/src/core/lib/channel/deadline_filter.c
index 0e703d8d27969f0b94d17f87dd0b9ce2efd979eb..a45a4d4b8206787868a43a600c8502a31158fd93 100644
--- a/src/core/lib/channel/deadline_filter.c
+++ b/src/core/lib/channel/deadline_filter.c
@@ -41,6 +41,7 @@
 
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_internal.h"
 
 //
 // grpc_deadline_state
@@ -58,7 +59,7 @@ static void timer_callback(grpc_exec_ctx* exec_ctx, void* arg,
     grpc_slice msg = grpc_slice_from_static_string("Deadline Exceeded");
     grpc_call_element_send_cancel_with_message(
         exec_ctx, elem, GRPC_STATUS_DEADLINE_EXCEEDED, &msg);
-    grpc_slice_unref(msg);
+    grpc_slice_unref_internal(exec_ctx, msg);
   }
   GRPC_CALL_STACK_UNREF(exec_ctx, deadline_state->call_stack, "deadline_timer");
 }
@@ -82,8 +83,11 @@ static void start_timer_if_needed_locked(grpc_exec_ctx* exec_ctx,
     // Take a reference to the call stack, to be owned by the timer.
     GRPC_CALL_STACK_REF(deadline_state->call_stack, "deadline_timer");
     deadline_state->timer_pending = true;
-    grpc_timer_init(exec_ctx, &deadline_state->timer, deadline, timer_callback,
-                    elem, gpr_now(GPR_CLOCK_MONOTONIC));
+    grpc_closure_init(&deadline_state->timer_callback, timer_callback, elem,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(exec_ctx, &deadline_state->timer, deadline,
+                    &deadline_state->timer_callback,
+                    gpr_now(GPR_CLOCK_MONOTONIC));
   }
 }
 static void start_timer_if_needed(grpc_exec_ctx* exec_ctx,
@@ -123,7 +127,8 @@ static void on_complete(grpc_exec_ctx* exec_ctx, void* arg, grpc_error* error) {
 static void inject_on_complete_cb(grpc_deadline_state* deadline_state,
                                   grpc_transport_stream_op* op) {
   deadline_state->next_on_complete = op->on_complete;
-  grpc_closure_init(&deadline_state->on_complete, on_complete, deadline_state);
+  grpc_closure_init(&deadline_state->on_complete, on_complete, deadline_state,
+                    grpc_schedule_on_exec_ctx);
   op->on_complete = &deadline_state->on_complete;
 }
 
@@ -172,8 +177,9 @@ void grpc_deadline_state_start(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
     struct start_timer_after_init_state* state = gpr_malloc(sizeof(*state));
     state->elem = elem;
     state->deadline = deadline;
-    grpc_closure_init(&state->closure, start_timer_after_init, state);
-    grpc_exec_ctx_sched(exec_ctx, &state->closure, GRPC_ERROR_NONE, NULL);
+    grpc_closure_init(&state->closure, start_timer_after_init, state,
+                      grpc_schedule_on_exec_ctx);
+    grpc_closure_sched(exec_ctx, &state->closure, GRPC_ERROR_NONE);
   }
 }
 
@@ -207,10 +213,11 @@ void grpc_deadline_state_client_start_transport_stream_op(
 //
 
 // Constructor for channel_data.  Used for both client and server filters.
-static void init_channel_elem(grpc_exec_ctx* exec_ctx,
-                              grpc_channel_element* elem,
-                              grpc_channel_element_args* args) {
+static grpc_error* init_channel_elem(grpc_exec_ctx* exec_ctx,
+                                     grpc_channel_element* elem,
+                                     grpc_channel_element_args* args) {
   GPR_ASSERT(!args->is_last);
+  return GRPC_ERROR_NONE;
 }
 
 // Destructor for channel_data.  Used for both client and server filters.
@@ -289,7 +296,8 @@ static void server_start_transport_stream_op(grpc_exec_ctx* exec_ctx,
       calld->next_recv_initial_metadata_ready = op->recv_initial_metadata_ready;
       calld->recv_initial_metadata = op->recv_initial_metadata;
       grpc_closure_init(&calld->recv_initial_metadata_ready,
-                        recv_initial_metadata_ready, elem);
+                        recv_initial_metadata_ready, elem,
+                        grpc_schedule_on_exec_ctx);
       op->recv_initial_metadata_ready = &calld->recv_initial_metadata_ready;
     }
     // Make sure we know when the call is complete, so that we can cancel
diff --git a/src/core/lib/channel/deadline_filter.h b/src/core/lib/channel/deadline_filter.h
index 716a8525653b8b76cb76227a64d41d5aabb16bfd..bd2b84f79e13a3fca4d03f65cd3aa1bd0173dfea 100644
--- a/src/core/lib/channel/deadline_filter.h
+++ b/src/core/lib/channel/deadline_filter.h
@@ -46,6 +46,7 @@ typedef struct grpc_deadline_state {
   bool timer_pending;
   // The deadline timer.
   grpc_timer timer;
+  grpc_closure timer_callback;
   // Closure to invoke when the call is complete.
   // We use this to cancel the timer.
   grpc_closure on_complete;
diff --git a/src/core/lib/channel/handshaker.c b/src/core/lib/channel/handshaker.c
index 23edc826ca742b2fee88126bdbba8228bf6635ce..c052ca538526861df51bf56c5cd69cbeb41c7c72 100644
--- a/src/core/lib/channel/handshaker.c
+++ b/src/core/lib/channel/handshaker.c
@@ -86,6 +86,7 @@ struct grpc_handshake_manager {
   grpc_tcp_server_acceptor* acceptor;
   // Deadline timer across all handshakers.
   grpc_timer deadline_timer;
+  grpc_closure on_timeout;
   // The final callback and user_data to invoke after the last handshaker.
   grpc_closure on_handshake_done;
   void* user_data;
@@ -165,7 +166,7 @@ static bool call_next_handshaker_locked(grpc_exec_ctx* exec_ctx,
     // Cancel deadline timer, since we're invoking the on_handshake_done
     // callback now.
     grpc_timer_cancel(exec_ctx, &mgr->deadline_timer);
-    grpc_exec_ctx_sched(exec_ctx, &mgr->on_handshake_done, error, NULL);
+    grpc_closure_sched(exec_ctx, &mgr->on_handshake_done, error);
     mgr->shutdown = true;
   } else {
     grpc_handshaker_do_handshake(exec_ctx, mgr->handshakers[mgr->index],
@@ -218,13 +219,17 @@ void grpc_handshake_manager_do_handshake(
   grpc_slice_buffer_init(mgr->args.read_buffer);
   // Initialize state needed for calling handshakers.
   mgr->acceptor = acceptor;
-  grpc_closure_init(&mgr->call_next_handshaker, call_next_handshaker, mgr);
-  grpc_closure_init(&mgr->on_handshake_done, on_handshake_done, &mgr->args);
+  grpc_closure_init(&mgr->call_next_handshaker, call_next_handshaker, mgr,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&mgr->on_handshake_done, on_handshake_done, &mgr->args,
+                    grpc_schedule_on_exec_ctx);
   // Start deadline timer, which owns a ref.
   gpr_ref(&mgr->refs);
+  grpc_closure_init(&mgr->on_timeout, on_timeout, mgr,
+                    grpc_schedule_on_exec_ctx);
   grpc_timer_init(exec_ctx, &mgr->deadline_timer,
                   gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
-                  on_timeout, mgr, gpr_now(GPR_CLOCK_MONOTONIC));
+                  &mgr->on_timeout, gpr_now(GPR_CLOCK_MONOTONIC));
   // Start first handshaker, which also owns a ref.
   gpr_ref(&mgr->refs);
   bool done = call_next_handshaker_locked(exec_ctx, mgr, GRPC_ERROR_NONE);
diff --git a/src/core/lib/channel/handshaker_factory.c b/src/core/lib/channel/handshaker_factory.c
new file mode 100644
index 0000000000000000000000000000000000000000..3c30a4e1d2effe1621d80126b1617130ada8e879
--- /dev/null
+++ b/src/core/lib/channel/handshaker_factory.c
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/channel/handshaker_factory.h"
+
+#include <grpc/support/log.h>
+
+void grpc_handshaker_factory_add_handshakers(
+    grpc_exec_ctx *exec_ctx, grpc_handshaker_factory *handshaker_factory,
+    const grpc_channel_args *args, grpc_handshake_manager *handshake_mgr) {
+  if (handshaker_factory != NULL) {
+    GPR_ASSERT(handshaker_factory->vtable != NULL);
+    handshaker_factory->vtable->add_handshakers(exec_ctx, handshaker_factory,
+                                                args, handshake_mgr);
+  }
+}
+
+void grpc_handshaker_factory_destroy(
+    grpc_exec_ctx *exec_ctx, grpc_handshaker_factory *handshaker_factory) {
+  if (handshaker_factory != NULL) {
+    GPR_ASSERT(handshaker_factory->vtable != NULL);
+    handshaker_factory->vtable->destroy(exec_ctx, handshaker_factory);
+  }
+}
diff --git a/src/core/lib/channel/handshaker_factory.h b/src/core/lib/channel/handshaker_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..1984546104d37596515e43faaae47ddb26491cbc
--- /dev/null
+++ b/src/core/lib/channel/handshaker_factory.h
@@ -0,0 +1,66 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_HANDSHAKER_FACTORY_H
+#define GRPC_CORE_LIB_CHANNEL_HANDSHAKER_FACTORY_H
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+// A handshaker factory is used to create handshakers.
+
+typedef struct grpc_handshaker_factory grpc_handshaker_factory;
+
+typedef struct {
+  void (*add_handshakers)(grpc_exec_ctx *exec_ctx,
+                          grpc_handshaker_factory *handshaker_factory,
+                          const grpc_channel_args *args,
+                          grpc_handshake_manager *handshake_mgr);
+  void (*destroy)(grpc_exec_ctx *exec_ctx,
+                  grpc_handshaker_factory *handshaker_factory);
+} grpc_handshaker_factory_vtable;
+
+struct grpc_handshaker_factory {
+  const grpc_handshaker_factory_vtable *vtable;
+};
+
+void grpc_handshaker_factory_add_handshakers(
+    grpc_exec_ctx *exec_ctx, grpc_handshaker_factory *handshaker_factory,
+    const grpc_channel_args *args, grpc_handshake_manager *handshake_mgr);
+
+void grpc_handshaker_factory_destroy(
+    grpc_exec_ctx *exec_ctx, grpc_handshaker_factory *handshaker_factory);
+
+#endif /* GRPC_CORE_LIB_CHANNEL_HANDSHAKER_FACTORY_H */
diff --git a/src/core/lib/channel/handshaker_registry.c b/src/core/lib/channel/handshaker_registry.c
new file mode 100644
index 0000000000000000000000000000000000000000..2e5f04064c26d2c83d2e55d45129ddffb9f11275
--- /dev/null
+++ b/src/core/lib/channel/handshaker_registry.c
@@ -0,0 +1,113 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/channel/handshaker_registry.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+//
+// grpc_handshaker_factory_list
+//
+
+typedef struct {
+  grpc_handshaker_factory** list;
+  size_t num_factories;
+} grpc_handshaker_factory_list;
+
+static void grpc_handshaker_factory_list_register(
+    grpc_handshaker_factory_list* list, bool at_start,
+    grpc_handshaker_factory* factory) {
+  list->list = gpr_realloc(
+      list->list, (list->num_factories + 1) * sizeof(grpc_handshaker_factory*));
+  if (at_start) {
+    memmove(list->list + 1, list->list,
+            sizeof(grpc_handshaker_factory*) * list->num_factories);
+    list->list[0] = factory;
+  } else {
+    list->list[list->num_factories] = factory;
+  }
+  ++list->num_factories;
+}
+
+static void grpc_handshaker_factory_list_add_handshakers(
+    grpc_exec_ctx* exec_ctx, grpc_handshaker_factory_list* list,
+    const grpc_channel_args* args, grpc_handshake_manager* handshake_mgr) {
+  for (size_t i = 0; i < list->num_factories; ++i) {
+    grpc_handshaker_factory_add_handshakers(exec_ctx, list->list[i], args,
+                                            handshake_mgr);
+  }
+}
+
+static void grpc_handshaker_factory_list_destroy(
+    grpc_exec_ctx* exec_ctx, grpc_handshaker_factory_list* list) {
+  for (size_t i = 0; i < list->num_factories; ++i) {
+    grpc_handshaker_factory_destroy(exec_ctx, list->list[i]);
+  }
+  gpr_free(list->list);
+}
+
+//
+// plugin
+//
+
+static grpc_handshaker_factory_list
+    g_handshaker_factory_lists[NUM_HANDSHAKER_TYPES];
+
+void grpc_handshaker_factory_registry_init() {
+  memset(g_handshaker_factory_lists, 0, sizeof(g_handshaker_factory_lists));
+}
+
+void grpc_handshaker_factory_registry_shutdown(grpc_exec_ctx* exec_ctx) {
+  for (size_t i = 0; i < NUM_HANDSHAKER_TYPES; ++i) {
+    grpc_handshaker_factory_list_destroy(exec_ctx,
+                                         &g_handshaker_factory_lists[i]);
+  }
+}
+
+void grpc_handshaker_factory_register(bool at_start,
+                                      grpc_handshaker_type handshaker_type,
+                                      grpc_handshaker_factory* factory) {
+  grpc_handshaker_factory_list_register(
+      &g_handshaker_factory_lists[handshaker_type], at_start, factory);
+}
+
+void grpc_handshakers_add(grpc_exec_ctx* exec_ctx,
+                          grpc_handshaker_type handshaker_type,
+                          const grpc_channel_args* args,
+                          grpc_handshake_manager* handshake_mgr) {
+  grpc_handshaker_factory_list_add_handshakers(
+      exec_ctx, &g_handshaker_factory_lists[handshaker_type], args,
+      handshake_mgr);
+}
diff --git a/src/core/lib/channel/handshaker_registry.h b/src/core/lib/channel/handshaker_registry.h
new file mode 100644
index 0000000000000000000000000000000000000000..53c1b173af230a05d9e60e398f911b10563eed23
--- /dev/null
+++ b/src/core/lib/channel/handshaker_registry.h
@@ -0,0 +1,63 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_HANDSHAKER_REGISTRY_H
+#define GRPC_CORE_LIB_CHANNEL_HANDSHAKER_REGISTRY_H
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/channel/handshaker_factory.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+typedef enum {
+  HANDSHAKER_CLIENT = 0,
+  HANDSHAKER_SERVER,
+  NUM_HANDSHAKER_TYPES,  // Must be last.
+} grpc_handshaker_type;
+
+void grpc_handshaker_factory_registry_init();
+void grpc_handshaker_factory_registry_shutdown(grpc_exec_ctx* exec_ctx);
+
+/// Registers a new handshaker factory.  Takes ownership.
+/// If \a at_start is true, the new handshaker will be at the beginning of
+/// the list.  Otherwise, it will be added to the end.
+void grpc_handshaker_factory_register(bool at_start,
+                                      grpc_handshaker_type handshaker_type,
+                                      grpc_handshaker_factory* factory);
+
+void grpc_handshakers_add(grpc_exec_ctx* exec_ctx,
+                          grpc_handshaker_type handshaker_type,
+                          const grpc_channel_args* args,
+                          grpc_handshake_manager* handshake_mgr);
+
+#endif /* GRPC_CORE_LIB_CHANNEL_HANDSHAKER_REGISTRY_H */
diff --git a/src/core/lib/channel/http_client_filter.c b/src/core/lib/channel/http_client_filter.c
index fd8b46afcbf12bd5c3710049f7e15f0083f851b2..d15445098885e812c4774cbefc34f8a4800cd1aa 100644
--- a/src/core/lib/channel/http_client_filter.c
+++ b/src/core/lib/channel/http_client_filter.c
@@ -37,6 +37,7 @@
 #include <string.h>
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/percent_encoding.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "src/core/lib/transport/transport_impl.h"
@@ -92,13 +93,9 @@ typedef struct channel_data {
   size_t max_payload_size_for_get;
 } channel_data;
 
-typedef struct {
-  grpc_call_element *elem;
-  grpc_exec_ctx *exec_ctx;
-} client_recv_filter_args;
-
-static grpc_mdelem *client_recv_filter(void *user_data, grpc_mdelem *md) {
-  client_recv_filter_args *a = user_data;
+static grpc_mdelem *client_recv_filter(grpc_exec_ctx *exec_ctx, void *user_data,
+                                       grpc_mdelem *md) {
+  grpc_call_element *elem = user_data;
   if (md == GRPC_MDELEM_STATUS_200) {
     return NULL;
   } else if (md->key == GRPC_MDSTR_STATUS) {
@@ -107,18 +104,19 @@ static grpc_mdelem *client_recv_filter(void *user_data, grpc_mdelem *md) {
                  grpc_mdstr_as_c_string(md->value));
     grpc_slice message = grpc_slice_from_copied_string(message_string);
     gpr_free(message_string);
-    grpc_call_element_send_close_with_message(a->exec_ctx, a->elem,
+    grpc_call_element_send_close_with_message(exec_ctx, elem,
                                               GRPC_STATUS_CANCELLED, &message);
     return NULL;
   } else if (md->key == GRPC_MDSTR_GRPC_MESSAGE) {
     grpc_slice pct_decoded_msg =
         grpc_permissive_percent_decode_slice(md->value->slice);
     if (grpc_slice_is_equivalent(pct_decoded_msg, md->value->slice)) {
-      grpc_slice_unref(pct_decoded_msg);
+      grpc_slice_unref_internal(exec_ctx, pct_decoded_msg);
       return md;
     } else {
       return grpc_mdelem_from_metadata_strings(
-          GRPC_MDSTR_GRPC_MESSAGE, grpc_mdstr_from_slice(pct_decoded_msg));
+          exec_ctx, GRPC_MDSTR_GRPC_MESSAGE,
+          grpc_mdstr_from_slice(exec_ctx, pct_decoded_msg));
     }
   } else if (md == GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC) {
     return NULL;
@@ -147,11 +145,8 @@ static void hc_on_recv_initial_metadata(grpc_exec_ctx *exec_ctx,
                                         void *user_data, grpc_error *error) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
-  client_recv_filter_args a;
-  a.elem = elem;
-  a.exec_ctx = exec_ctx;
-  grpc_metadata_batch_filter(calld->recv_initial_metadata, client_recv_filter,
-                             &a);
+  grpc_metadata_batch_filter(exec_ctx, calld->recv_initial_metadata,
+                             client_recv_filter, elem);
   grpc_closure_run(exec_ctx, calld->on_done_recv_initial_metadata,
                    GRPC_ERROR_REF(error));
 }
@@ -160,11 +155,8 @@ static void hc_on_recv_trailing_metadata(grpc_exec_ctx *exec_ctx,
                                          void *user_data, grpc_error *error) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
-  client_recv_filter_args a;
-  a.elem = elem;
-  a.exec_ctx = exec_ctx;
-  grpc_metadata_batch_filter(calld->recv_trailing_metadata, client_recv_filter,
-                             &a);
+  grpc_metadata_batch_filter(exec_ctx, calld->recv_trailing_metadata,
+                             client_recv_filter, elem);
   grpc_closure_run(exec_ctx, calld->on_done_recv_trailing_metadata,
                    GRPC_ERROR_REF(error));
 }
@@ -183,11 +175,12 @@ static void hc_on_complete(grpc_exec_ctx *exec_ctx, void *user_data,
 static void send_done(grpc_exec_ctx *exec_ctx, void *elemp, grpc_error *error) {
   grpc_call_element *elem = elemp;
   call_data *calld = elem->call_data;
-  grpc_slice_buffer_reset_and_unref(&calld->slices);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &calld->slices);
   calld->post_send->cb(exec_ctx, calld->post_send->cb_arg, error);
 }
 
-static grpc_mdelem *client_strip_filter(void *user_data, grpc_mdelem *md) {
+static grpc_mdelem *client_strip_filter(grpc_exec_ctx *exec_ctx,
+                                        void *user_data, grpc_mdelem *md) {
   /* eat the things we'd like to set ourselves */
   if (md->key == GRPC_MDSTR_METHOD) return NULL;
   if (md->key == GRPC_MDSTR_SCHEME) return NULL;
@@ -275,7 +268,7 @@ static void hc_mutate_op(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
         /* when all the send_message data is available, then create a MDELEM and
         append to headers */
         grpc_mdelem *payload_bin = grpc_mdelem_from_metadata_strings(
-            GRPC_MDSTR_GRPC_PAYLOAD_BIN,
+            exec_ctx, GRPC_MDSTR_GRPC_PAYLOAD_BIN,
             grpc_mdstr_from_buffer(calld->payload_bytes,
                                    op->send_message->length));
         grpc_metadata_batch_add_tail(op->send_initial_metadata,
@@ -292,8 +285,8 @@ static void hc_mutate_op(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
       }
     }
 
-    grpc_metadata_batch_filter(op->send_initial_metadata, client_strip_filter,
-                               elem);
+    grpc_metadata_batch_filter(exec_ctx, op->send_initial_metadata,
+                               client_strip_filter, elem);
     /* Send : prefixed headers, which have to be before any application
        layer headers. */
     grpc_metadata_batch_add_head(op->send_initial_metadata, &calld->method,
@@ -352,12 +345,17 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
   calld->send_message_blocked = false;
   grpc_slice_buffer_init(&calld->slices);
   grpc_closure_init(&calld->hc_on_recv_initial_metadata,
-                    hc_on_recv_initial_metadata, elem);
+                    hc_on_recv_initial_metadata, elem,
+                    grpc_schedule_on_exec_ctx);
   grpc_closure_init(&calld->hc_on_recv_trailing_metadata,
-                    hc_on_recv_trailing_metadata, elem);
-  grpc_closure_init(&calld->hc_on_complete, hc_on_complete, elem);
-  grpc_closure_init(&calld->got_slice, got_slice, elem);
-  grpc_closure_init(&calld->send_done, send_done, elem);
+                    hc_on_recv_trailing_metadata, elem,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&calld->hc_on_complete, hc_on_complete, elem,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&calld->got_slice, got_slice, elem,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&calld->send_done, send_done, elem,
+                    grpc_schedule_on_exec_ctx);
   return GRPC_ERROR_NONE;
 }
 
@@ -366,7 +364,7 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               void *ignored) {
   call_data *calld = elem->call_data;
-  grpc_slice_buffer_destroy(&calld->slices);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &calld->slices);
 }
 
 static grpc_mdelem *scheme_from_args(const grpc_channel_args *args) {
@@ -457,9 +455,9 @@ static grpc_mdstr *user_agent_from_args(const grpc_channel_args *args,
 }
 
 /* Constructor for channel_data */
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   channel_data *chand = elem->channel_data;
   GPR_ASSERT(!args->is_last);
   GPR_ASSERT(args->optional_transport != NULL);
@@ -467,16 +465,17 @@ static void init_channel_elem(grpc_exec_ctx *exec_ctx,
   chand->max_payload_size_for_get =
       max_payload_size_from_args(args->channel_args);
   chand->user_agent = grpc_mdelem_from_metadata_strings(
-      GRPC_MDSTR_USER_AGENT,
+      exec_ctx, GRPC_MDSTR_USER_AGENT,
       user_agent_from_args(args->channel_args,
                            args->optional_transport->vtable->name));
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel data */
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {
   channel_data *chand = elem->channel_data;
-  GRPC_MDELEM_UNREF(chand->user_agent);
+  GRPC_MDELEM_UNREF(exec_ctx, chand->user_agent);
 }
 
 const grpc_channel_filter grpc_http_client_filter = {
diff --git a/src/core/lib/channel/http_server_filter.c b/src/core/lib/channel/http_server_filter.c
index b42ff06039c079c879c3d9c463e61d9cd536f068..f508231238374b4d4fbf46d5d3a4c2fccd42d070 100644
--- a/src/core/lib/channel/http_server_filter.c
+++ b/src/core/lib/channel/http_server_filter.c
@@ -38,6 +38,7 @@
 #include <string.h>
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/percent_encoding.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/transport/static_metadata.h"
 
 #define EXPECTED_CONTENT_TYPE "application/grpc"
@@ -82,31 +83,28 @@ typedef struct call_data {
 
 typedef struct channel_data { uint8_t unused; } channel_data;
 
-typedef struct {
-  grpc_call_element *elem;
-  grpc_exec_ctx *exec_ctx;
-} server_filter_args;
-
-static grpc_mdelem *server_filter_outgoing_metadata(void *user_data,
+static grpc_mdelem *server_filter_outgoing_metadata(grpc_exec_ctx *exec_ctx,
+                                                    void *user_data,
                                                     grpc_mdelem *md) {
   if (md->key == GRPC_MDSTR_GRPC_MESSAGE) {
     grpc_slice pct_encoded_msg = grpc_percent_encode_slice(
         md->value->slice, grpc_compatible_percent_encoding_unreserved_bytes);
     if (grpc_slice_is_equivalent(pct_encoded_msg, md->value->slice)) {
-      grpc_slice_unref(pct_encoded_msg);
+      grpc_slice_unref_internal(exec_ctx, pct_encoded_msg);
       return md;
     } else {
       return grpc_mdelem_from_metadata_strings(
-          GRPC_MDSTR_GRPC_MESSAGE, grpc_mdstr_from_slice(pct_encoded_msg));
+          exec_ctx, GRPC_MDSTR_GRPC_MESSAGE,
+          grpc_mdstr_from_slice(exec_ctx, pct_encoded_msg));
     }
   } else {
     return md;
   }
 }
 
-static grpc_mdelem *server_filter(void *user_data, grpc_mdelem *md) {
-  server_filter_args *a = user_data;
-  grpc_call_element *elem = a->elem;
+static grpc_mdelem *server_filter(grpc_exec_ctx *exec_ctx, void *user_data,
+                                  grpc_mdelem *md) {
+  grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
 
   /* Check if it is one of the headers we care about. */
@@ -157,7 +155,7 @@ static grpc_mdelem *server_filter(void *user_data, grpc_mdelem *md) {
     /* swallow it and error everything out. */
     /* TODO(klempner): We ought to generate more descriptive error messages
        on the wire here. */
-    grpc_call_element_send_cancel(a->exec_ctx, elem);
+    grpc_call_element_send_cancel(exec_ctx, elem);
     return NULL;
   } else if (md->key == GRPC_MDSTR_PATH) {
     if (calld->seen_path) {
@@ -173,7 +171,7 @@ static grpc_mdelem *server_filter(void *user_data, grpc_mdelem *md) {
     /* translate host to :authority since :authority may be
        omitted */
     grpc_mdelem *authority = grpc_mdelem_from_metadata_strings(
-        GRPC_MDSTR_AUTHORITY, GRPC_MDSTR_REF(md->value));
+        exec_ctx, GRPC_MDSTR_AUTHORITY, GRPC_MDSTR_REF(md->value));
     calld->seen_authority = 1;
     return authority;
   } else if (md->key == GRPC_MDSTR_GRPC_PAYLOAD_BIN) {
@@ -181,7 +179,7 @@ static grpc_mdelem *server_filter(void *user_data, grpc_mdelem *md) {
        header field */
     calld->seen_payload_bin = 1;
     grpc_slice_buffer_add(&calld->read_slice_buffer,
-                          grpc_slice_ref(md->value->slice));
+                          grpc_slice_ref_internal(md->value->slice));
     grpc_slice_buffer_stream_init(&calld->read_stream,
                                   &calld->read_slice_buffer, 0);
     return NULL;
@@ -195,10 +193,8 @@ static void hs_on_recv(grpc_exec_ctx *exec_ctx, void *user_data,
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
   if (err == GRPC_ERROR_NONE) {
-    server_filter_args a;
-    a.elem = elem;
-    a.exec_ctx = exec_ctx;
-    grpc_metadata_batch_filter(calld->recv_initial_metadata, server_filter, &a);
+    grpc_metadata_batch_filter(exec_ctx, calld->recv_initial_metadata,
+                               server_filter, elem);
     /* Have we seen the required http2 transport headers?
        (:method, :scheme, content-type, with :path and :authority covered
        at the channel level right now) */
@@ -310,9 +306,8 @@ static void hs_mutate_op(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
   }
 
   if (op->send_trailing_metadata) {
-    server_filter_args a = {elem, exec_ctx};
-    grpc_metadata_batch_filter(op->send_trailing_metadata,
-                               server_filter_outgoing_metadata, &a);
+    grpc_metadata_batch_filter(exec_ctx, op->send_trailing_metadata,
+                               server_filter_outgoing_metadata, elem);
   }
 }
 
@@ -334,9 +329,12 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
   call_data *calld = elem->call_data;
   /* initialize members */
   memset(calld, 0, sizeof(*calld));
-  grpc_closure_init(&calld->hs_on_recv, hs_on_recv, elem);
-  grpc_closure_init(&calld->hs_on_complete, hs_on_complete, elem);
-  grpc_closure_init(&calld->hs_recv_message_ready, hs_recv_message_ready, elem);
+  grpc_closure_init(&calld->hs_on_recv, hs_on_recv, elem,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&calld->hs_on_complete, hs_on_complete, elem,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&calld->hs_recv_message_ready, hs_recv_message_ready, elem,
+                    grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&calld->read_slice_buffer);
   return GRPC_ERROR_NONE;
 }
@@ -346,14 +344,15 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               void *ignored) {
   call_data *calld = elem->call_data;
-  grpc_slice_buffer_destroy(&calld->read_slice_buffer);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &calld->read_slice_buffer);
 }
 
 /* Constructor for channel_data */
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   GPR_ASSERT(!args->is_last);
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel data */
diff --git a/src/core/lib/channel/message_size_filter.c b/src/core/lib/channel/message_size_filter.c
index 1cf68d790d80e8c9a01da24b25ea2037376090ba..862090b371cf974456fa4d0ed05c3f55a9cb9b97 100644
--- a/src/core/lib/channel/message_size_filter.c
+++ b/src/core/lib/channel/message_size_filter.c
@@ -54,8 +54,12 @@ static void* message_size_limits_copy(void* value) {
   return new_value;
 }
 
+static void message_size_limits_free(grpc_exec_ctx* exec_ctx, void* value) {
+  gpr_free(value);
+}
+
 static const grpc_mdstr_hash_table_vtable message_size_limits_vtable = {
-    gpr_free, message_size_limits_copy};
+    message_size_limits_free, message_size_limits_copy};
 
 static void* message_size_limits_create_from_json(const grpc_json* json) {
   int max_request_message_bytes = -1;
@@ -124,7 +128,7 @@ static void recv_message_ready(grpc_exec_ctx* exec_ctx, void* user_data,
     gpr_free(message_string);
   }
   // Invoke the next callback.
-  grpc_exec_ctx_sched(exec_ctx, calld->next_recv_message_ready, error, NULL);
+  grpc_closure_sched(exec_ctx, calld->next_recv_message_ready, error);
 }
 
 // Start transport stream op.
@@ -160,7 +164,8 @@ static grpc_error* init_call_elem(grpc_exec_ctx* exec_ctx,
   channel_data* chand = elem->channel_data;
   call_data* calld = elem->call_data;
   calld->next_recv_message_ready = NULL;
-  grpc_closure_init(&calld->recv_message_ready, recv_message_ready, elem);
+  grpc_closure_init(&calld->recv_message_ready, recv_message_ready, elem,
+                    grpc_schedule_on_exec_ctx);
   // Get max sizes from channel data, then merge in per-method config values.
   // Note: Per-method config is only available on the client, so we
   // apply the max request size to the send limit and the max response
@@ -168,8 +173,8 @@ static grpc_error* init_call_elem(grpc_exec_ctx* exec_ctx,
   calld->max_send_size = chand->max_send_size;
   calld->max_recv_size = chand->max_recv_size;
   if (chand->method_limit_table != NULL) {
-    message_size_limits* limits =
-        grpc_method_config_table_get(chand->method_limit_table, args->path);
+    message_size_limits* limits = grpc_method_config_table_get(
+        exec_ctx, chand->method_limit_table, args->path);
     if (limits != NULL) {
       if (limits->max_send_size >= 0 &&
           (limits->max_send_size < calld->max_send_size ||
@@ -192,9 +197,9 @@ static void destroy_call_elem(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
                               void* ignored) {}
 
 // Constructor for channel_data.
-static void init_channel_elem(grpc_exec_ctx* exec_ctx,
-                              grpc_channel_element* elem,
-                              grpc_channel_element_args* args) {
+static grpc_error* init_channel_elem(grpc_exec_ctx* exec_ctx,
+                                     grpc_channel_element* elem,
+                                     grpc_channel_element_args* args) {
   GPR_ASSERT(!args->is_last);
   channel_data* chand = elem->channel_data;
   memset(chand, 0, sizeof(*chand));
@@ -226,18 +231,19 @@ static void init_channel_elem(grpc_exec_ctx* exec_ctx,
     if (service_config != NULL) {
       chand->method_limit_table =
           grpc_service_config_create_method_config_table(
-              service_config, message_size_limits_create_from_json,
+              exec_ctx, service_config, message_size_limits_create_from_json,
               &message_size_limits_vtable);
       grpc_service_config_destroy(service_config);
     }
   }
+  return GRPC_ERROR_NONE;
 }
 
 // Destructor for channel_data.
 static void destroy_channel_elem(grpc_exec_ctx* exec_ctx,
                                  grpc_channel_element* elem) {
   channel_data* chand = elem->channel_data;
-  grpc_mdstr_hash_table_unref(chand->method_limit_table);
+  grpc_mdstr_hash_table_unref(exec_ctx, chand->method_limit_table);
 }
 
 const grpc_channel_filter grpc_message_size_filter = {
diff --git a/src/core/lib/compression/message_compress.c b/src/core/lib/compression/message_compress.c
index 6c245acf615683213f0d6b1a9bfcd1232eae8162..49beb953b00cb6ecf3cd0dc4e3df7ae5a0920190 100644
--- a/src/core/lib/compression/message_compress.c
+++ b/src/core/lib/compression/message_compress.c
@@ -40,10 +40,12 @@
 
 #include <zlib.h>
 
+#include "src/core/lib/slice/slice_internal.h"
+
 #define OUTPUT_BLOCK_SIZE 1024
 
-static int zlib_body(z_stream* zs, grpc_slice_buffer* input,
-                     grpc_slice_buffer* output,
+static int zlib_body(grpc_exec_ctx* exec_ctx, z_stream* zs,
+                     grpc_slice_buffer* input, grpc_slice_buffer* output,
                      int (*flate)(z_stream* zs, int flush)) {
   int r;
   int flush;
@@ -87,7 +89,7 @@ static int zlib_body(z_stream* zs, grpc_slice_buffer* input,
   return 1;
 
 error:
-  grpc_slice_unref(outbuf);
+  grpc_slice_unref_internal(exec_ctx, outbuf);
   return 0;
 }
 
@@ -97,8 +99,8 @@ static void* zalloc_gpr(void* opaque, unsigned int items, unsigned int size) {
 
 static void zfree_gpr(void* opaque, void* address) { gpr_free(address); }
 
-static int zlib_compress(grpc_slice_buffer* input, grpc_slice_buffer* output,
-                         int gzip) {
+static int zlib_compress(grpc_exec_ctx* exec_ctx, grpc_slice_buffer* input,
+                         grpc_slice_buffer* output, int gzip) {
   z_stream zs;
   int r;
   size_t i;
@@ -110,10 +112,11 @@ static int zlib_compress(grpc_slice_buffer* input, grpc_slice_buffer* output,
   r = deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 15 | (gzip ? 16 : 0),
                    8, Z_DEFAULT_STRATEGY);
   GPR_ASSERT(r == Z_OK);
-  r = zlib_body(&zs, input, output, deflate) && output->length < input->length;
+  r = zlib_body(exec_ctx, &zs, input, output, deflate) &&
+      output->length < input->length;
   if (!r) {
     for (i = count_before; i < output->count; i++) {
-      grpc_slice_unref(output->slices[i]);
+      grpc_slice_unref_internal(exec_ctx, output->slices[i]);
     }
     output->count = count_before;
     output->length = length_before;
@@ -122,8 +125,8 @@ static int zlib_compress(grpc_slice_buffer* input, grpc_slice_buffer* output,
   return r;
 }
 
-static int zlib_decompress(grpc_slice_buffer* input, grpc_slice_buffer* output,
-                           int gzip) {
+static int zlib_decompress(grpc_exec_ctx* exec_ctx, grpc_slice_buffer* input,
+                           grpc_slice_buffer* output, int gzip) {
   z_stream zs;
   int r;
   size_t i;
@@ -134,10 +137,10 @@ static int zlib_decompress(grpc_slice_buffer* input, grpc_slice_buffer* output,
   zs.zfree = zfree_gpr;
   r = inflateInit2(&zs, 15 | (gzip ? 16 : 0));
   GPR_ASSERT(r == Z_OK);
-  r = zlib_body(&zs, input, output, inflate);
+  r = zlib_body(exec_ctx, &zs, input, output, inflate);
   if (!r) {
     for (i = count_before; i < output->count; i++) {
-      grpc_slice_unref(output->slices[i]);
+      grpc_slice_unref_internal(exec_ctx, output->slices[i]);
     }
     output->count = count_before;
     output->length = length_before;
@@ -149,12 +152,13 @@ static int zlib_decompress(grpc_slice_buffer* input, grpc_slice_buffer* output,
 static int copy(grpc_slice_buffer* input, grpc_slice_buffer* output) {
   size_t i;
   for (i = 0; i < input->count; i++) {
-    grpc_slice_buffer_add(output, grpc_slice_ref(input->slices[i]));
+    grpc_slice_buffer_add(output, grpc_slice_ref_internal(input->slices[i]));
   }
   return 1;
 }
 
-static int compress_inner(grpc_compression_algorithm algorithm,
+static int compress_inner(grpc_exec_ctx* exec_ctx,
+                          grpc_compression_algorithm algorithm,
                           grpc_slice_buffer* input, grpc_slice_buffer* output) {
   switch (algorithm) {
     case GRPC_COMPRESS_NONE:
@@ -162,9 +166,9 @@ static int compress_inner(grpc_compression_algorithm algorithm,
          rely on that here */
       return 0;
     case GRPC_COMPRESS_DEFLATE:
-      return zlib_compress(input, output, 0);
+      return zlib_compress(exec_ctx, input, output, 0);
     case GRPC_COMPRESS_GZIP:
-      return zlib_compress(input, output, 1);
+      return zlib_compress(exec_ctx, input, output, 1);
     case GRPC_COMPRESS_ALGORITHMS_COUNT:
       break;
   }
@@ -172,24 +176,26 @@ static int compress_inner(grpc_compression_algorithm algorithm,
   return 0;
 }
 
-int grpc_msg_compress(grpc_compression_algorithm algorithm,
+int grpc_msg_compress(grpc_exec_ctx* exec_ctx,
+                      grpc_compression_algorithm algorithm,
                       grpc_slice_buffer* input, grpc_slice_buffer* output) {
-  if (!compress_inner(algorithm, input, output)) {
+  if (!compress_inner(exec_ctx, algorithm, input, output)) {
     copy(input, output);
     return 0;
   }
   return 1;
 }
 
-int grpc_msg_decompress(grpc_compression_algorithm algorithm,
+int grpc_msg_decompress(grpc_exec_ctx* exec_ctx,
+                        grpc_compression_algorithm algorithm,
                         grpc_slice_buffer* input, grpc_slice_buffer* output) {
   switch (algorithm) {
     case GRPC_COMPRESS_NONE:
       return copy(input, output);
     case GRPC_COMPRESS_DEFLATE:
-      return zlib_decompress(input, output, 0);
+      return zlib_decompress(exec_ctx, input, output, 0);
     case GRPC_COMPRESS_GZIP:
-      return zlib_decompress(input, output, 1);
+      return zlib_decompress(exec_ctx, input, output, 1);
     case GRPC_COMPRESS_ALGORITHMS_COUNT:
       break;
   }
diff --git a/src/core/lib/compression/message_compress.h b/src/core/lib/compression/message_compress.h
index 448d36a8635190ece28e0532f182aea28ad3542a..7bd3d98607cc8dd80d86be55d939e7b9eca30487 100644
--- a/src/core/lib/compression/message_compress.h
+++ b/src/core/lib/compression/message_compress.h
@@ -40,13 +40,15 @@
 /* compress 'input' to 'output' using 'algorithm'.
    On success, appends compressed slices to output and returns 1.
    On failure, appends uncompressed slices to output and returns 0. */
-int grpc_msg_compress(grpc_compression_algorithm algorithm,
+int grpc_msg_compress(grpc_exec_ctx* exec_ctx,
+                      grpc_compression_algorithm algorithm,
                       grpc_slice_buffer* input, grpc_slice_buffer* output);
 
 /* decompress 'input' to 'output' using 'algorithm'.
    On success, appends slices to output and returns 1.
    On failure, output is unchanged, and returns 0. */
-int grpc_msg_decompress(grpc_compression_algorithm algorithm,
+int grpc_msg_decompress(grpc_exec_ctx* exec_ctx,
+                        grpc_compression_algorithm algorithm,
                         grpc_slice_buffer* input, grpc_slice_buffer* output);
 
 #endif /* GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H */
diff --git a/src/core/lib/http/httpcli.c b/src/core/lib/http/httpcli.c
index fdb8abaa2df1f67399b8042c27f4fdc3304ee172..fb2108987b15baaebd27b95be08dc6ee92daba39 100644
--- a/src/core/lib/http/httpcli.c
+++ b/src/core/lib/http/httpcli.c
@@ -47,6 +47,7 @@
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
 
 typedef struct {
@@ -103,7 +104,7 @@ static void finish(grpc_exec_ctx *exec_ctx, internal_request *req,
                    grpc_error *error) {
   grpc_polling_entity_del_from_pollset_set(exec_ctx, req->pollent,
                                            req->context->pollset_set);
-  grpc_exec_ctx_sched(exec_ctx, req->on_done, error, NULL);
+  grpc_closure_sched(exec_ctx, req->on_done, error);
   grpc_http_parser_destroy(&req->parser);
   if (req->addresses != NULL) {
     grpc_resolved_addresses_destroy(req->addresses);
@@ -111,14 +112,14 @@ static void finish(grpc_exec_ctx *exec_ctx, internal_request *req,
   if (req->ep != NULL) {
     grpc_endpoint_destroy(exec_ctx, req->ep);
   }
-  grpc_slice_unref(req->request_text);
+  grpc_slice_unref_internal(exec_ctx, req->request_text);
   gpr_free(req->host);
   gpr_free(req->ssl_host_override);
   grpc_iomgr_unregister_object(&req->iomgr_obj);
-  grpc_slice_buffer_destroy(&req->incoming);
-  grpc_slice_buffer_destroy(&req->outgoing);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &req->incoming);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &req->outgoing);
   GRPC_ERROR_UNREF(req->overall_error);
-  grpc_resource_quota_internal_unref(exec_ctx, req->resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, req->resource_quota);
   gpr_free(req);
 }
 
@@ -178,7 +179,7 @@ static void done_write(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
 }
 
 static void start_write(grpc_exec_ctx *exec_ctx, internal_request *req) {
-  grpc_slice_ref(req->request_text);
+  grpc_slice_ref_internal(req->request_text);
   grpc_slice_buffer_add(&req->outgoing, req->request_text);
   grpc_endpoint_write(exec_ctx, req->ep, &req->outgoing, &req->done_write);
 }
@@ -224,7 +225,8 @@ static void next_address(grpc_exec_ctx *exec_ctx, internal_request *req,
     return;
   }
   addr = &req->addresses->addrs[req->next_address++];
-  grpc_closure_init(&req->connected, on_connected, req);
+  grpc_closure_init(&req->connected, on_connected, req,
+                    grpc_schedule_on_exec_ctx);
   grpc_arg arg;
   arg.key = GRPC_ARG_RESOURCE_QUOTA;
   arg.type = GRPC_ARG_POINTER;
@@ -265,9 +267,10 @@ static void internal_request_begin(grpc_exec_ctx *exec_ctx,
   req->context = context;
   req->pollent = pollent;
   req->overall_error = GRPC_ERROR_NONE;
-  req->resource_quota = grpc_resource_quota_internal_ref(resource_quota);
-  grpc_closure_init(&req->on_read, on_read, req);
-  grpc_closure_init(&req->done_write, done_write, req);
+  req->resource_quota = grpc_resource_quota_ref_internal(resource_quota);
+  grpc_closure_init(&req->on_read, on_read, req, grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&req->done_write, done_write, req,
+                    grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&req->incoming);
   grpc_slice_buffer_init(&req->outgoing);
   grpc_iomgr_register_object(&req->iomgr_obj, name);
@@ -277,8 +280,11 @@ static void internal_request_begin(grpc_exec_ctx *exec_ctx,
   GPR_ASSERT(pollent);
   grpc_polling_entity_add_to_pollset_set(exec_ctx, req->pollent,
                                          req->context->pollset_set);
-  grpc_resolve_address(exec_ctx, request->host, req->handshaker->default_port,
-                       grpc_closure_create(on_resolved, req), &req->addresses);
+  grpc_resolve_address(
+      exec_ctx, request->host, req->handshaker->default_port,
+      req->context->pollset_set,
+      grpc_closure_create(on_resolved, req, grpc_schedule_on_exec_ctx),
+      &req->addresses);
 }
 
 void grpc_httpcli_get(grpc_exec_ctx *exec_ctx, grpc_httpcli_context *context,
diff --git a/src/core/lib/http/httpcli_security_connector.c b/src/core/lib/http/httpcli_security_connector.c
index 14cdb1dab37594ead429953f8ee8702cb0609146..440817c5a6bfd24e66960f9820cd76fd4b568514 100644
--- a/src/core/lib/http/httpcli_security_connector.c
+++ b/src/core/lib/http/httpcli_security_connector.c
@@ -41,6 +41,7 @@
 
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/security/transport/security_handshaker.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/tsi/ssl_transport_security.h"
 
@@ -50,7 +51,8 @@ typedef struct {
   char *secure_peer_name;
 } grpc_httpcli_ssl_channel_security_connector;
 
-static void httpcli_ssl_destroy(grpc_security_connector *sc) {
+static void httpcli_ssl_destroy(grpc_exec_ctx *exec_ctx,
+                                grpc_security_connector *sc) {
   grpc_httpcli_ssl_channel_security_connector *c =
       (grpc_httpcli_ssl_channel_security_connector *)sc;
   if (c->handshaker_factory != NULL) {
@@ -96,7 +98,7 @@ static void httpcli_ssl_check_peer(grpc_exec_ctx *exec_ctx,
     error = GRPC_ERROR_CREATE(msg);
     gpr_free(msg);
   }
-  grpc_exec_ctx_sched(exec_ctx, on_peer_checked, error, NULL);
+  grpc_closure_sched(exec_ctx, on_peer_checked, error);
   tsi_peer_destruct(&peer);
 }
 
@@ -104,8 +106,9 @@ static grpc_security_connector_vtable httpcli_ssl_vtable = {
     httpcli_ssl_destroy, httpcli_ssl_check_peer};
 
 static grpc_security_status httpcli_ssl_channel_security_connector_create(
-    const unsigned char *pem_root_certs, size_t pem_root_certs_size,
-    const char *secure_peer_name, grpc_channel_security_connector **sc) {
+    grpc_exec_ctx *exec_ctx, const unsigned char *pem_root_certs,
+    size_t pem_root_certs_size, const char *secure_peer_name,
+    grpc_channel_security_connector **sc) {
   tsi_result result = TSI_OK;
   grpc_httpcli_ssl_channel_security_connector *c;
 
@@ -129,7 +132,7 @@ static grpc_security_status httpcli_ssl_channel_security_connector_create(
   if (result != TSI_OK) {
     gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
             tsi_result_to_string(result));
-    httpcli_ssl_destroy(&c->base.base);
+    httpcli_ssl_destroy(exec_ctx, &c->base.base);
     *sc = NULL;
     return GRPC_SECURITY_ERROR;
   }
@@ -156,8 +159,8 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_error_free_string(msg);
     c->func(exec_ctx, c->arg, NULL);
   } else {
-    grpc_channel_args_destroy(args->args);
-    grpc_slice_buffer_destroy(args->read_buffer);
+    grpc_channel_args_destroy(exec_ctx, args->args);
+    grpc_slice_buffer_destroy_internal(exec_ctx, args->read_buffer);
     gpr_free(args->read_buffer);
     c->func(exec_ctx, c->arg, args->endpoint);
   }
@@ -184,14 +187,14 @@ static void ssl_handshake(grpc_exec_ctx *exec_ctx, void *arg,
   c->arg = arg;
   c->handshake_mgr = grpc_handshake_manager_create();
   GPR_ASSERT(httpcli_ssl_channel_security_connector_create(
-                 pem_root_certs, pem_root_certs_size, host, &sc) ==
+                 exec_ctx, pem_root_certs, pem_root_certs_size, host, &sc) ==
              GRPC_SECURITY_OK);
   grpc_channel_security_connector_add_handshakers(exec_ctx, sc,
                                                   c->handshake_mgr);
   grpc_handshake_manager_do_handshake(
       exec_ctx, c->handshake_mgr, tcp, NULL /* channel_args */, deadline,
       NULL /* acceptor */, on_handshake_done, c /* user_data */);
-  GRPC_SECURITY_CONNECTOR_UNREF(&sc->base, "httpcli");
+  GRPC_SECURITY_CONNECTOR_UNREF(exec_ctx, &sc->base, "httpcli");
 }
 
 const grpc_httpcli_handshaker grpc_httpcli_ssl = {"https", ssl_handshake};
diff --git a/src/core/lib/iomgr/README.md b/src/core/lib/iomgr/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..9b22b76cebf96637ea7dbc793e53a69ce870ef6c
--- /dev/null
+++ b/src/core/lib/iomgr/README.md
@@ -0,0 +1,6 @@
+# iomgr
+
+Platform abstractions for I/O (mostly network).
+
+Provides abstractions over TCP/UDP I/O, file loading, polling, and concurrency
+management for various operating systems.
diff --git a/src/core/lib/iomgr/closure.c b/src/core/lib/iomgr/closure.c
index c6ddc76732a4ecb8d3af7bc4ef28b773a3cf590c..da0ec878a39818bc5b5fcfd5ec7935f09e8efa0d 100644
--- a/src/core/lib/iomgr/closure.c
+++ b/src/core/lib/iomgr/closure.c
@@ -37,10 +37,13 @@
 
 #include "src/core/lib/profiling/timers.h"
 
-void grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb,
-                       void *cb_arg) {
+grpc_closure *grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb,
+                                void *cb_arg,
+                                grpc_closure_scheduler *scheduler) {
   closure->cb = cb;
   closure->cb_arg = cb_arg;
+  closure->scheduler = scheduler;
+  return closure;
 }
 
 void grpc_closure_list_init(grpc_closure_list *closure_list) {
@@ -105,11 +108,12 @@ static void closure_wrapper(grpc_exec_ctx *exec_ctx, void *arg,
   cb(exec_ctx, cb_arg, error);
 }
 
-grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg) {
+grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg,
+                                  grpc_closure_scheduler *scheduler) {
   wrapped_closure *wc = gpr_malloc(sizeof(*wc));
   wc->cb = cb;
   wc->cb_arg = cb_arg;
-  grpc_closure_init(&wc->wrapper, closure_wrapper, wc);
+  grpc_closure_init(&wc->wrapper, closure_wrapper, wc, scheduler);
   return &wc->wrapper;
 }
 
@@ -117,8 +121,30 @@ void grpc_closure_run(grpc_exec_ctx *exec_ctx, grpc_closure *c,
                       grpc_error *error) {
   GPR_TIMER_BEGIN("grpc_closure_run", 0);
   if (c != NULL) {
-    c->cb(exec_ctx, c->cb_arg, error);
+    c->scheduler->vtable->run(exec_ctx, c, error);
+  } else {
+    GRPC_ERROR_UNREF(error);
   }
-  GRPC_ERROR_UNREF(error);
   GPR_TIMER_END("grpc_closure_run", 0);
 }
+
+void grpc_closure_sched(grpc_exec_ctx *exec_ctx, grpc_closure *c,
+                        grpc_error *error) {
+  GPR_TIMER_BEGIN("grpc_closure_sched", 0);
+  if (c != NULL) {
+    c->scheduler->vtable->sched(exec_ctx, c, error);
+  } else {
+    GRPC_ERROR_UNREF(error);
+  }
+  GPR_TIMER_END("grpc_closure_sched", 0);
+}
+
+void grpc_closure_list_sched(grpc_exec_ctx *exec_ctx, grpc_closure_list *list) {
+  grpc_closure *c = list->head;
+  while (c != NULL) {
+    grpc_closure *next = c->next_data.next;
+    c->scheduler->vtable->sched(exec_ctx, c, c->error_data.error);
+    c = next;
+  }
+  list->head = list->tail = NULL;
+}
diff --git a/src/core/lib/iomgr/closure.h b/src/core/lib/iomgr/closure.h
index 2b4b271eaab2fe8cf56c6495b09e0981cba872ec..ee386fbc7670c28b94c26b5d2cc8dab8f882fbe7 100644
--- a/src/core/lib/iomgr/closure.h
+++ b/src/core/lib/iomgr/closure.h
@@ -35,6 +35,8 @@
 #define GRPC_CORE_LIB_IOMGR_CLOSURE_H
 
 #include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/exec_ctx_fwd.h>
 #include <stdbool.h>
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/support/mpscq.h"
@@ -42,10 +44,6 @@
 struct grpc_closure;
 typedef struct grpc_closure grpc_closure;
 
-/* forward declaration for exec_ctx.h */
-struct grpc_exec_ctx;
-typedef struct grpc_exec_ctx grpc_exec_ctx;
-
 typedef struct grpc_closure_list {
   grpc_closure *head;
   grpc_closure *tail;
@@ -59,6 +57,22 @@ typedef struct grpc_closure_list {
 typedef void (*grpc_iomgr_cb_func)(grpc_exec_ctx *exec_ctx, void *arg,
                                    grpc_error *error);
 
+typedef struct grpc_closure_scheduler grpc_closure_scheduler;
+
+typedef struct grpc_closure_scheduler_vtable {
+  /* NOTE: for all these functions, closure->scheduler == the scheduler that was
+           used to find this vtable */
+  void (*run)(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+              grpc_error *error);
+  void (*sched)(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+                grpc_error *error);
+} grpc_closure_scheduler_vtable;
+
+/** Abstract type that can schedule closures for execution */
+struct grpc_closure_scheduler {
+  const grpc_closure_scheduler_vtable *vtable;
+};
+
 /** A closure over a grpc_iomgr_cb_func. */
 struct grpc_closure {
   /** Once queued, next indicates the next queued closure; before then, scratch
@@ -75,6 +89,10 @@ struct grpc_closure {
   /** Arguments to be passed to "cb". */
   void *cb_arg;
 
+  /** Scheduler to schedule against: NULL to schedule against current execution
+      context */
+  grpc_closure_scheduler *scheduler;
+
   /** Once queued, the result of the closure. Before then: scratch space */
   union {
     grpc_error *error;
@@ -82,12 +100,14 @@ struct grpc_closure {
   } error_data;
 };
 
-/** Initializes \a closure with \a cb and \a cb_arg. */
-void grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb,
-                       void *cb_arg);
+/** Initializes \a closure with \a cb and \a cb_arg. Returns \a closure. */
+grpc_closure *grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb,
+                                void *cb_arg,
+                                grpc_closure_scheduler *scheduler);
 
 /* Create a heap allocated closure: try to avoid except for very rare events */
-grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg);
+grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg,
+                                  grpc_closure_scheduler *scheduler);
 
 #define GRPC_CLOSURE_LIST_INIT \
   { NULL, NULL }
@@ -115,4 +135,13 @@ bool grpc_closure_list_empty(grpc_closure_list list);
 void grpc_closure_run(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
                       grpc_error *error);
 
+/** Schedule a closure to be run. Does not need to be run from a safe point. */
+void grpc_closure_sched(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+                        grpc_error *error);
+
+/** Schedule all closures in a list to be run. Does not need to be run from a
+ * safe point. */
+void grpc_closure_list_sched(grpc_exec_ctx *exec_ctx,
+                             grpc_closure_list *closure_list);
+
 #endif /* GRPC_CORE_LIB_IOMGR_CLOSURE_H */
diff --git a/src/core/lib/iomgr/combiner.c b/src/core/lib/iomgr/combiner.c
index cfc67020ae77a379c6b8307fa760f302b6bd1773..c26a73b2b716a0d6316703ad5410b55113dde78c 100644
--- a/src/core/lib/iomgr/combiner.c
+++ b/src/core/lib/iomgr/combiner.c
@@ -56,6 +56,10 @@ int grpc_combiner_trace = 0;
 struct grpc_combiner {
   grpc_combiner *next_combiner_on_this_exec_ctx;
   grpc_workqueue *optional_workqueue;
+  grpc_closure_scheduler uncovered_scheduler;
+  grpc_closure_scheduler covered_scheduler;
+  grpc_closure_scheduler uncovered_finally_scheduler;
+  grpc_closure_scheduler covered_finally_scheduler;
   gpr_mpscq queue;
   // state is:
   // lower bit - zero if orphaned (STATE_UNORPHANED)
@@ -70,6 +74,26 @@ struct grpc_combiner {
   grpc_closure offload;
 };
 
+static void combiner_exec_uncovered(grpc_exec_ctx *exec_ctx,
+                                    grpc_closure *closure, grpc_error *error);
+static void combiner_exec_covered(grpc_exec_ctx *exec_ctx,
+                                  grpc_closure *closure, grpc_error *error);
+static void combiner_finally_exec_uncovered(grpc_exec_ctx *exec_ctx,
+                                            grpc_closure *closure,
+                                            grpc_error *error);
+static void combiner_finally_exec_covered(grpc_exec_ctx *exec_ctx,
+                                          grpc_closure *closure,
+                                          grpc_error *error);
+
+static const grpc_closure_scheduler_vtable scheduler_uncovered = {
+    combiner_exec_uncovered, combiner_exec_uncovered};
+static const grpc_closure_scheduler_vtable scheduler_covered = {
+    combiner_exec_covered, combiner_exec_covered};
+static const grpc_closure_scheduler_vtable finally_scheduler_uncovered = {
+    combiner_finally_exec_uncovered, combiner_finally_exec_uncovered};
+static const grpc_closure_scheduler_vtable finally_scheduler_covered = {
+    combiner_finally_exec_covered, combiner_finally_exec_covered};
+
 static void offload(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error);
 
 typedef struct {
@@ -102,11 +126,16 @@ grpc_combiner *grpc_combiner_create(grpc_workqueue *optional_workqueue) {
   lock->time_to_execute_final_list = false;
   lock->optional_workqueue = optional_workqueue;
   lock->final_list_covered_by_poller = false;
+  lock->uncovered_scheduler.vtable = &scheduler_uncovered;
+  lock->covered_scheduler.vtable = &scheduler_covered;
+  lock->uncovered_finally_scheduler.vtable = &finally_scheduler_uncovered;
+  lock->covered_finally_scheduler.vtable = &finally_scheduler_covered;
   gpr_atm_no_barrier_store(&lock->state, STATE_UNORPHANED);
   gpr_atm_no_barrier_store(&lock->elements_covered_by_poller, 0);
   gpr_mpscq_init(&lock->queue);
   grpc_closure_list_init(&lock->final_list);
-  grpc_closure_init(&lock->offload, offload, lock);
+  grpc_closure_init(&lock->offload, offload, lock,
+                    grpc_workqueue_scheduler(lock->optional_workqueue));
   GRPC_COMBINER_TRACE(gpr_log(GPR_DEBUG, "C:%p create", lock));
   return lock;
 }
@@ -148,9 +177,9 @@ static void push_first_on_exec_ctx(grpc_exec_ctx *exec_ctx,
   }
 }
 
-void grpc_combiner_execute(grpc_exec_ctx *exec_ctx, grpc_combiner *lock,
-                           grpc_closure *cl, grpc_error *error,
-                           bool covered_by_poller) {
+static void combiner_exec(grpc_exec_ctx *exec_ctx, grpc_combiner *lock,
+                          grpc_closure *cl, grpc_error *error,
+                          bool covered_by_poller) {
   GPR_TIMER_BEGIN("combiner.execute", 0);
   gpr_atm last = gpr_atm_full_fetch_add(&lock->state, STATE_ELEM_COUNT_LOW_BIT);
   GRPC_COMBINER_TRACE(gpr_log(
@@ -171,6 +200,24 @@ void grpc_combiner_execute(grpc_exec_ctx *exec_ctx, grpc_combiner *lock,
   GPR_TIMER_END("combiner.execute", 0);
 }
 
+#define COMBINER_FROM_CLOSURE_SCHEDULER(closure, scheduler_name) \
+  ((grpc_combiner *)(((char *)((closure)->scheduler)) -          \
+                     offsetof(grpc_combiner, scheduler_name)))
+
+static void combiner_exec_uncovered(grpc_exec_ctx *exec_ctx, grpc_closure *cl,
+                                    grpc_error *error) {
+  combiner_exec(exec_ctx,
+                COMBINER_FROM_CLOSURE_SCHEDULER(cl, uncovered_scheduler), cl,
+                error, false);
+}
+
+static void combiner_exec_covered(grpc_exec_ctx *exec_ctx, grpc_closure *cl,
+                                  grpc_error *error) {
+  combiner_exec(exec_ctx,
+                COMBINER_FROM_CLOSURE_SCHEDULER(cl, covered_scheduler), cl,
+                error, true);
+}
+
 static void move_next(grpc_exec_ctx *exec_ctx) {
   exec_ctx->active_combiner =
       exec_ctx->active_combiner->next_combiner_on_this_exec_ctx;
@@ -188,8 +235,7 @@ static void queue_offload(grpc_exec_ctx *exec_ctx, grpc_combiner *lock) {
   move_next(exec_ctx);
   GRPC_COMBINER_TRACE(gpr_log(GPR_DEBUG, "C:%p queue_offload --> %p", lock,
                               lock->optional_workqueue));
-  grpc_workqueue_enqueue(exec_ctx, lock->optional_workqueue, &lock->offload,
-                         GRPC_ERROR_NONE);
+  grpc_closure_sched(exec_ctx, &lock->offload, GRPC_ERROR_NONE);
 }
 
 bool grpc_combiner_continue_exec_ctx(grpc_exec_ctx *exec_ctx) {
@@ -312,23 +358,22 @@ bool grpc_combiner_continue_exec_ctx(grpc_exec_ctx *exec_ctx) {
 }
 
 static void enqueue_finally(grpc_exec_ctx *exec_ctx, void *closure,
-                            grpc_error *error) {
-  grpc_combiner_execute_finally(exec_ctx, exec_ctx->active_combiner, closure,
-                                GRPC_ERROR_REF(error), false);
-}
+                            grpc_error *error);
 
-void grpc_combiner_execute_finally(grpc_exec_ctx *exec_ctx, grpc_combiner *lock,
-                                   grpc_closure *closure, grpc_error *error,
-                                   bool covered_by_poller) {
+static void combiner_execute_finally(grpc_exec_ctx *exec_ctx,
+                                     grpc_combiner *lock, grpc_closure *closure,
+                                     grpc_error *error,
+                                     bool covered_by_poller) {
   GRPC_COMBINER_TRACE(gpr_log(
       GPR_DEBUG, "C:%p grpc_combiner_execute_finally c=%p; ac=%p; cov=%d", lock,
       closure, exec_ctx->active_combiner, covered_by_poller));
   GPR_TIMER_BEGIN("combiner.execute_finally", 0);
   if (exec_ctx->active_combiner != lock) {
     GPR_TIMER_MARK("slowpath", 0);
-    grpc_combiner_execute(exec_ctx, lock,
-                          grpc_closure_create(enqueue_finally, closure), error,
-                          false);
+    grpc_closure_sched(
+        exec_ctx, grpc_closure_create(enqueue_finally, closure,
+                                      grpc_combiner_scheduler(lock, false)),
+        error);
     GPR_TIMER_END("combiner.execute_finally", 0);
     return;
   }
@@ -342,3 +387,36 @@ void grpc_combiner_execute_finally(grpc_exec_ctx *exec_ctx, grpc_combiner *lock,
   grpc_closure_list_append(&lock->final_list, closure, error);
   GPR_TIMER_END("combiner.execute_finally", 0);
 }
+
+static void enqueue_finally(grpc_exec_ctx *exec_ctx, void *closure,
+                            grpc_error *error) {
+  combiner_execute_finally(exec_ctx, exec_ctx->active_combiner, closure,
+                           GRPC_ERROR_REF(error), false);
+}
+
+static void combiner_finally_exec_uncovered(grpc_exec_ctx *exec_ctx,
+                                            grpc_closure *cl,
+                                            grpc_error *error) {
+  combiner_execute_finally(exec_ctx, COMBINER_FROM_CLOSURE_SCHEDULER(
+                                         cl, uncovered_finally_scheduler),
+                           cl, error, false);
+}
+
+static void combiner_finally_exec_covered(grpc_exec_ctx *exec_ctx,
+                                          grpc_closure *cl, grpc_error *error) {
+  combiner_execute_finally(
+      exec_ctx, COMBINER_FROM_CLOSURE_SCHEDULER(cl, covered_finally_scheduler),
+      cl, error, true);
+}
+
+grpc_closure_scheduler *grpc_combiner_scheduler(grpc_combiner *combiner,
+                                                bool covered_by_poller) {
+  return covered_by_poller ? &combiner->covered_scheduler
+                           : &combiner->uncovered_scheduler;
+}
+
+grpc_closure_scheduler *grpc_combiner_finally_scheduler(
+    grpc_combiner *combiner, bool covered_by_poller) {
+  return covered_by_poller ? &combiner->covered_finally_scheduler
+                           : &combiner->uncovered_finally_scheduler;
+}
diff --git a/src/core/lib/iomgr/combiner.h b/src/core/lib/iomgr/combiner.h
index d04eeed83a0397fbedfc18828e5253567def1e04..81dff85d40268a1080cbd4446954f67e0df57970 100644
--- a/src/core/lib/iomgr/combiner.h
+++ b/src/core/lib/iomgr/combiner.h
@@ -50,14 +50,12 @@
 grpc_combiner *grpc_combiner_create(grpc_workqueue *optional_workqueue);
 // Destroy the lock
 void grpc_combiner_destroy(grpc_exec_ctx *exec_ctx, grpc_combiner *lock);
-// Execute \a action within the lock.
-void grpc_combiner_execute(grpc_exec_ctx *exec_ctx, grpc_combiner *lock,
-                           grpc_closure *closure, grpc_error *error,
-                           bool covered_by_poller);
-// Execute \a action within the lock just prior to unlocking.
-void grpc_combiner_execute_finally(grpc_exec_ctx *exec_ctx, grpc_combiner *lock,
-                                   grpc_closure *closure, grpc_error *error,
-                                   bool covered_by_poller);
+// Fetch a scheduler to schedule closures against
+grpc_closure_scheduler *grpc_combiner_scheduler(grpc_combiner *lock,
+                                                bool covered_by_poller);
+// Scheduler to execute \a action within the lock just prior to unlocking.
+grpc_closure_scheduler *grpc_combiner_finally_scheduler(grpc_combiner *lock,
+                                                        bool covered_by_poller);
 
 bool grpc_combiner_continue_exec_ctx(grpc_exec_ctx *exec_ctx);
 
diff --git a/src/core/lib/iomgr/ev_epoll_linux.c b/src/core/lib/iomgr/ev_epoll_linux.c
index 1b15e0eb4fef9b6645f5363c7cc5cb9b4c254c6b..d6664aead2e56f13d27c2037f2178abc787f4578 100644
--- a/src/core/lib/iomgr/ev_epoll_linux.c
+++ b/src/core/lib/iomgr/ev_epoll_linux.c
@@ -31,7 +31,6 @@
  *
  */
 
-#include <grpc/grpc_posix.h>
 #include "src/core/lib/iomgr/port.h"
 
 /* This polling engine is only relevant on linux kernels supporting epoll() */
@@ -202,6 +201,8 @@ static void fd_global_shutdown(void);
 
 /* This is also used as grpc_workqueue (by directly casing it) */
 typedef struct polling_island {
+  grpc_closure_scheduler workqueue_scheduler;
+
   gpr_mu mu;
   /* Ref count. Use PI_ADD_REF() and PI_UNREF() macros to increment/decrement
      the refcount.
@@ -305,6 +306,8 @@ static __thread polling_island *g_current_thread_polling_island;
 
 /* Forward declaration */
 static void polling_island_delete(grpc_exec_ctx *exec_ctx, polling_island *pi);
+static void workqueue_enqueue(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+                              grpc_error *error);
 
 #ifdef GRPC_TSAN
 /* Currently TSAN may incorrectly flag data races between epoll_ctl and
@@ -317,6 +320,9 @@ static void polling_island_delete(grpc_exec_ctx *exec_ctx, polling_island *pi);
 gpr_atm g_epoll_sync;
 #endif /* defined(GRPC_TSAN) */
 
+static const grpc_closure_scheduler_vtable workqueue_scheduler_vtable = {
+    workqueue_enqueue, workqueue_enqueue};
+
 static void pi_add_ref(polling_island *pi);
 static void pi_unref(grpc_exec_ctx *exec_ctx, polling_island *pi);
 
@@ -529,6 +535,7 @@ static polling_island *polling_island_create(grpc_exec_ctx *exec_ctx,
   *error = GRPC_ERROR_NONE;
 
   pi = gpr_malloc(sizeof(*pi));
+  pi->workqueue_scheduler.vtable = &workqueue_scheduler_vtable;
   gpr_mu_init(&pi->mu);
   pi->fd_cnt = 0;
   pi->fd_capacity = 0;
@@ -800,10 +807,10 @@ static polling_island *polling_island_merge(polling_island *p,
   return q;
 }
 
-static void workqueue_enqueue(grpc_exec_ctx *exec_ctx,
-                              grpc_workqueue *workqueue, grpc_closure *closure,
+static void workqueue_enqueue(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
                               grpc_error *error) {
   GPR_TIMER_BEGIN("workqueue.enqueue", 0);
+  grpc_workqueue *workqueue = (grpc_workqueue *)closure->scheduler;
   /* take a ref to the workqueue: otherwise it can happen that whatever events
    * this kicks off ends up destroying the workqueue before this function
    * completes */
@@ -820,6 +827,12 @@ static void workqueue_enqueue(grpc_exec_ctx *exec_ctx,
   GPR_TIMER_END("workqueue.enqueue", 0);
 }
 
+static grpc_closure_scheduler *workqueue_scheduler(grpc_workqueue *workqueue) {
+  polling_island *pi = (polling_island *)workqueue;
+  return workqueue == NULL ? grpc_schedule_on_exec_ctx
+                           : &pi->workqueue_scheduler;
+}
+
 static grpc_error *polling_island_global_init() {
   grpc_error *error = GRPC_ERROR_NONE;
 
@@ -1030,8 +1043,7 @@ static void fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
     fd->po.pi = NULL;
   }
 
-  grpc_exec_ctx_sched(exec_ctx, fd->on_done_closure, GRPC_ERROR_REF(error),
-                      NULL);
+  grpc_closure_sched(exec_ctx, fd->on_done_closure, GRPC_ERROR_REF(error));
 
   gpr_mu_unlock(&fd->po.mu);
   UNREF_BY(fd, 2, reason); /* Drop the reference */
@@ -1057,16 +1069,14 @@ static grpc_error *fd_shutdown_error(bool shutdown) {
 static void notify_on_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
                              grpc_closure **st, grpc_closure *closure) {
   if (fd->shutdown) {
-    grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_CREATE("FD shutdown"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_CREATE("FD shutdown"));
   } else if (*st == CLOSURE_NOT_READY) {
     /* not ready ==> switch to a waiting state by setting the closure */
     *st = closure;
   } else if (*st == CLOSURE_READY) {
     /* already ready ==> queue the closure to run immediately */
     *st = CLOSURE_NOT_READY;
-    grpc_exec_ctx_sched(exec_ctx, closure, fd_shutdown_error(fd->shutdown),
-                        NULL);
+    grpc_closure_sched(exec_ctx, closure, fd_shutdown_error(fd->shutdown));
   } else {
     /* upcallptr was set to a different closure.  This is an error! */
     gpr_log(GPR_ERROR,
@@ -1088,7 +1098,7 @@ static int set_ready_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
     return 0;
   } else {
     /* waiting ==> queue closure */
-    grpc_exec_ctx_sched(exec_ctx, *st, fd_shutdown_error(fd->shutdown), NULL);
+    grpc_closure_sched(exec_ctx, *st, fd_shutdown_error(fd->shutdown));
     *st = CLOSURE_NOT_READY;
     return 1;
   }
@@ -1359,7 +1369,7 @@ static void finish_shutdown_locked(grpc_exec_ctx *exec_ctx,
 
   /* Release the ref and set pollset->po.pi to NULL */
   pollset_release_polling_island(exec_ctx, pollset, "ps_shutdown");
-  grpc_exec_ctx_sched(exec_ctx, pollset->shutdown_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, pollset->shutdown_done, GRPC_ERROR_NONE);
 }
 
 /* pollset->po.mu lock must be held by the caller before calling this */
@@ -1410,7 +1420,9 @@ static bool maybe_do_workqueue_work(grpc_exec_ctx *exec_ctx,
         workqueue_maybe_wakeup(pi);
       }
       grpc_closure *c = (grpc_closure *)n;
-      grpc_closure_run(exec_ctx, c, c->error_data.error);
+      grpc_error *error = c->error_data.error;
+      c->cb(exec_ctx, c->cb_arg, error);
+      GRPC_ERROR_UNREF(error);
       return true;
     } else if (gpr_atm_no_barrier_load(&pi->workqueue_item_count) > 0) {
       /* n == NULL might mean there's work but it's not available to be popped
@@ -1959,7 +1971,7 @@ static const grpc_event_engine_vtable vtable = {
 
     .workqueue_ref = workqueue_ref,
     .workqueue_unref = workqueue_unref,
-    .workqueue_enqueue = workqueue_enqueue,
+    .workqueue_scheduler = workqueue_scheduler,
 
     .shutdown_engine = shutdown_engine,
 };
diff --git a/src/core/lib/iomgr/ev_poll_posix.c b/src/core/lib/iomgr/ev_poll_posix.c
index 21b28e5554e9c23a3f87e0d29b5101fcf8e50294..5bc56214434e4c98ed67f6daeb69c2248a9685f7 100644
--- a/src/core/lib/iomgr/ev_poll_posix.c
+++ b/src/core/lib/iomgr/ev_poll_posix.c
@@ -397,7 +397,7 @@ static void close_fd_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
   if (!fd->released) {
     close(fd->fd);
   }
-  grpc_exec_ctx_sched(exec_ctx, fd->on_done_closure, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, fd->on_done_closure, GRPC_ERROR_NONE);
 }
 
 static int fd_wrapped_fd(grpc_fd *fd) {
@@ -457,16 +457,14 @@ static grpc_error *fd_shutdown_error(bool shutdown) {
 static void notify_on_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
                              grpc_closure **st, grpc_closure *closure) {
   if (fd->shutdown) {
-    grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_CREATE("FD shutdown"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_CREATE("FD shutdown"));
   } else if (*st == CLOSURE_NOT_READY) {
     /* not ready ==> switch to a waiting state by setting the closure */
     *st = closure;
   } else if (*st == CLOSURE_READY) {
     /* already ready ==> queue the closure to run immediately */
     *st = CLOSURE_NOT_READY;
-    grpc_exec_ctx_sched(exec_ctx, closure, fd_shutdown_error(fd->shutdown),
-                        NULL);
+    grpc_closure_sched(exec_ctx, closure, fd_shutdown_error(fd->shutdown));
     maybe_wake_one_watcher_locked(fd);
   } else {
     /* upcallptr was set to a different closure.  This is an error! */
@@ -489,7 +487,7 @@ static int set_ready_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
     return 0;
   } else {
     /* waiting ==> queue closure */
-    grpc_exec_ctx_sched(exec_ctx, *st, fd_shutdown_error(fd->shutdown), NULL);
+    grpc_closure_sched(exec_ctx, *st, fd_shutdown_error(fd->shutdown));
     *st = CLOSURE_NOT_READY;
     return 1;
   }
@@ -852,7 +850,7 @@ static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset) {
     GRPC_FD_UNREF(pollset->fds[i], "multipoller");
   }
   pollset->fd_count = 0;
-  grpc_exec_ctx_sched(exec_ctx, pollset->shutdown_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, pollset->shutdown_done, GRPC_ERROR_NONE);
 }
 
 static void work_combine_error(grpc_error **composite, grpc_error *error) {
@@ -901,7 +899,7 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   if (!pollset_has_workers(pollset) &&
       !grpc_closure_list_empty(pollset->idle_jobs)) {
     GPR_TIMER_MARK("pollset_work.idle_jobs", 0);
-    grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL);
+    grpc_closure_list_sched(exec_ctx, &pollset->idle_jobs);
     goto done;
   }
   /* If we're shutting down then we don't execute any extended work */
@@ -1081,7 +1079,7 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
        * TODO(dklempner): Can we refactor the shutdown logic to avoid this? */
       gpr_mu_lock(&pollset->mu);
     } else if (!grpc_closure_list_empty(pollset->idle_jobs)) {
-      grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL);
+      grpc_closure_list_sched(exec_ctx, &pollset->idle_jobs);
       gpr_mu_unlock(&pollset->mu);
       grpc_exec_ctx_flush(exec_ctx);
       gpr_mu_lock(&pollset->mu);
@@ -1100,7 +1098,7 @@ static void pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   pollset->shutdown_done = closure;
   pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
   if (!pollset_has_workers(pollset)) {
-    grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL);
+    grpc_closure_list_sched(exec_ctx, &pollset->idle_jobs);
   }
   if (!pollset->called_shutdown && !pollset_has_workers(pollset)) {
     pollset->called_shutdown = 1;
@@ -1288,10 +1286,8 @@ static void workqueue_unref(grpc_exec_ctx *exec_ctx,
                             grpc_workqueue *workqueue) {}
 #endif
 
-static void workqueue_enqueue(grpc_exec_ctx *exec_ctx,
-                              grpc_workqueue *workqueue, grpc_closure *closure,
-                              grpc_error *error) {
-  grpc_exec_ctx_sched(exec_ctx, closure, error, NULL);
+static grpc_closure_scheduler *workqueue_scheduler(grpc_workqueue *workqueue) {
+  return grpc_schedule_on_exec_ctx;
 }
 
 /*******************************************************************************
@@ -1534,7 +1530,7 @@ static const grpc_event_engine_vtable vtable = {
 
     .workqueue_ref = workqueue_ref,
     .workqueue_unref = workqueue_unref,
-    .workqueue_enqueue = workqueue_enqueue,
+    .workqueue_scheduler = workqueue_scheduler,
 
     .shutdown_engine = shutdown_engine,
 };
diff --git a/src/core/lib/iomgr/ev_posix.c b/src/core/lib/iomgr/ev_posix.c
index ab139895fdc873a7271026a45c839cbf44adc171..2975d619e18cb1869b2c665d897ad8f7fa5f3674 100644
--- a/src/core/lib/iomgr/ev_posix.c
+++ b/src/core/lib/iomgr/ev_posix.c
@@ -275,9 +275,8 @@ void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) {
 }
 #endif
 
-void grpc_workqueue_enqueue(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue,
-                            grpc_closure *closure, grpc_error *error) {
-  g_event_engine->workqueue_enqueue(exec_ctx, workqueue, closure, error);
+grpc_closure_scheduler *grpc_workqueue_scheduler(grpc_workqueue *workqueue) {
+  return g_event_engine->workqueue_scheduler(workqueue);
 }
 
 #endif  // GRPC_POSIX_SOCKET
diff --git a/src/core/lib/iomgr/ev_posix.h b/src/core/lib/iomgr/ev_posix.h
index cb5832539da421b8abe0810f4bc3c314c442b4ef..1068a4bad519f81cff6e3a17ecab2711527cc948 100644
--- a/src/core/lib/iomgr/ev_posix.h
+++ b/src/core/lib/iomgr/ev_posix.h
@@ -106,8 +106,7 @@ typedef struct grpc_event_engine_vtable {
   grpc_workqueue *(*workqueue_ref)(grpc_workqueue *workqueue);
   void (*workqueue_unref)(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue);
 #endif
-  void (*workqueue_enqueue)(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue,
-                            grpc_closure *closure, grpc_error *error);
+  grpc_closure_scheduler *(*workqueue_scheduler)(grpc_workqueue *workqueue);
 } grpc_event_engine_vtable;
 
 void grpc_event_engine_init(void);
diff --git a/src/core/lib/iomgr/exec_ctx.c b/src/core/lib/iomgr/exec_ctx.c
index 604713e578e6d77ed6327f5e414ad3194e3ef753..6aa788f8e5f981f4af6259b12843ca5f2925be2d 100644
--- a/src/core/lib/iomgr/exec_ctx.c
+++ b/src/core/lib/iomgr/exec_ctx.c
@@ -57,7 +57,6 @@ bool grpc_always_ready_to_finish(grpc_exec_ctx *exec_ctx, void *arg_ignored) {
   return true;
 }
 
-#ifndef GRPC_EXECUTION_CONTEXT_SANITIZER
 bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) {
   bool did_something = 0;
   GPR_TIMER_BEGIN("grpc_exec_ctx_flush", 0);
@@ -67,8 +66,10 @@ bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) {
       exec_ctx->closure_list.head = exec_ctx->closure_list.tail = NULL;
       while (c != NULL) {
         grpc_closure *next = c->next_data.next;
+        grpc_error *error = c->error_data.error;
         did_something = true;
-        grpc_closure_run(exec_ctx, c, c->error_data.error);
+        c->cb(exec_ctx, c->cb_arg, error);
+        GRPC_ERROR_UNREF(error);
         c = next;
       }
     } else if (!grpc_combiner_continue_exec_ctx(exec_ctx)) {
@@ -76,30 +77,6 @@ bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) {
     }
   }
   GPR_ASSERT(exec_ctx->active_combiner == NULL);
-  if (exec_ctx->stealing_from_workqueue != NULL) {
-    if (grpc_exec_ctx_ready_to_finish(exec_ctx)) {
-      grpc_workqueue_enqueue(exec_ctx, exec_ctx->stealing_from_workqueue,
-                             exec_ctx->stolen_closure,
-                             exec_ctx->stolen_closure->error_data.error);
-      GRPC_WORKQUEUE_UNREF(exec_ctx, exec_ctx->stealing_from_workqueue,
-                           "exec_ctx_sched");
-      exec_ctx->stealing_from_workqueue = NULL;
-      exec_ctx->stolen_closure = NULL;
-    } else {
-      grpc_closure *c = exec_ctx->stolen_closure;
-      GRPC_WORKQUEUE_UNREF(exec_ctx, exec_ctx->stealing_from_workqueue,
-                           "exec_ctx_sched");
-      exec_ctx->stealing_from_workqueue = NULL;
-      exec_ctx->stolen_closure = NULL;
-      grpc_error *error = c->error_data.error;
-      GPR_TIMER_BEGIN("grpc_exec_ctx_flush.stolen_cb", 0);
-      c->cb(exec_ctx, c->cb_arg, error);
-      GRPC_ERROR_UNREF(error);
-      GPR_TIMER_END("grpc_exec_ctx_flush.stolen_cb", 0);
-      grpc_exec_ctx_flush(exec_ctx);
-      did_something = true;
-    }
-  }
   GPR_TIMER_END("grpc_exec_ctx_flush", 0);
   return did_something;
 }
@@ -109,104 +86,21 @@ void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx) {
   grpc_exec_ctx_flush(exec_ctx);
 }
 
-void grpc_exec_ctx_sched(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
-                         grpc_error *error,
-                         grpc_workqueue *offload_target_or_null) {
-  GPR_TIMER_BEGIN("grpc_exec_ctx_sched", 0);
-  if (offload_target_or_null == NULL) {
-    grpc_closure_list_append(&exec_ctx->closure_list, closure, error);
-  } else if (exec_ctx->stealing_from_workqueue == NULL) {
-    exec_ctx->stealing_from_workqueue = offload_target_or_null;
-    closure->error_data.error = error;
-    exec_ctx->stolen_closure = closure;
-  } else if (exec_ctx->stealing_from_workqueue != offload_target_or_null) {
-    grpc_workqueue_enqueue(exec_ctx, offload_target_or_null, closure, error);
-    GRPC_WORKQUEUE_UNREF(exec_ctx, offload_target_or_null, "exec_ctx_sched");
-  } else { /* stealing_from_workqueue == offload_target_or_null */
-    grpc_workqueue_enqueue(exec_ctx, offload_target_or_null,
-                           exec_ctx->stolen_closure,
-                           exec_ctx->stolen_closure->error_data.error);
-    closure->error_data.error = error;
-    exec_ctx->stolen_closure = closure;
-    GRPC_WORKQUEUE_UNREF(exec_ctx, offload_target_or_null, "exec_ctx_sched");
-  }
-  GPR_TIMER_END("grpc_exec_ctx_sched", 0);
+static void exec_ctx_run(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+                         grpc_error *error) {
+  closure->cb(exec_ctx, closure->cb_arg, error);
+  GRPC_ERROR_UNREF(error);
 }
 
-void grpc_exec_ctx_enqueue_list(grpc_exec_ctx *exec_ctx,
-                                grpc_closure_list *list,
-                                grpc_workqueue *offload_target_or_null) {
-  grpc_closure_list_move(list, &exec_ctx->closure_list);
+static void exec_ctx_sched(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+                           grpc_error *error) {
+  grpc_closure_list_append(&exec_ctx->closure_list, closure, error);
 }
 
 void grpc_exec_ctx_global_init(void) {}
 void grpc_exec_ctx_global_shutdown(void) {}
-#else
-static gpr_mu g_mu;
-static gpr_cv g_cv;
-static int g_threads = 0;
-
-static void run_closure(void *arg) {
-  grpc_closure *closure = arg;
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  closure->cb(&exec_ctx, closure->cb_arg, (closure->final_data & 1) != 0);
-  grpc_exec_ctx_finish(&exec_ctx);
-  gpr_mu_lock(&g_mu);
-  if (--g_threads == 0) {
-    gpr_cv_signal(&g_cv);
-  }
-  gpr_mu_unlock(&g_mu);
-}
-
-static void start_closure(grpc_closure *closure) {
-  gpr_thd_id id;
-  gpr_mu_lock(&g_mu);
-  g_threads++;
-  gpr_mu_unlock(&g_mu);
-  gpr_thd_new(&id, run_closure, closure, NULL);
-}
-
-bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) { return false; }
-
-void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx) {}
 
-void grpc_exec_ctx_enqueue(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
-                           bool success,
-                           grpc_workqueue *offload_target_or_null) {
-  GPR_ASSERT(offload_target_or_null == NULL);
-  if (closure == NULL) return;
-  closure->final_data = success;
-  start_closure(closure);
-}
-
-void grpc_exec_ctx_enqueue_list(grpc_exec_ctx *exec_ctx,
-                                grpc_closure_list *list,
-                                grpc_workqueue *offload_target_or_null) {
-  GPR_ASSERT(offload_target_or_null == NULL);
-  if (list == NULL) return;
-  grpc_closure *p = list->head;
-  while (p) {
-    grpc_closure *start = p;
-    p = grpc_closure_next(start);
-    start_closure(start);
-  }
-  grpc_closure_list r = GRPC_CLOSURE_LIST_INIT;
-  *list = r;
-}
-
-void grpc_exec_ctx_global_init(void) {
-  gpr_mu_init(&g_mu);
-  gpr_cv_init(&g_cv);
-}
-
-void grpc_exec_ctx_global_shutdown(void) {
-  gpr_mu_lock(&g_mu);
-  while (g_threads != 0) {
-    gpr_cv_wait(&g_cv, &g_mu, gpr_inf_future(GPR_CLOCK_REALTIME));
-  }
-  gpr_mu_unlock(&g_mu);
-
-  gpr_mu_destroy(&g_mu);
-  gpr_cv_destroy(&g_cv);
-}
-#endif
+static const grpc_closure_scheduler_vtable exec_ctx_scheduler_vtable = {
+    exec_ctx_run, exec_ctx_sched};
+static grpc_closure_scheduler exec_ctx_scheduler = {&exec_ctx_scheduler_vtable};
+grpc_closure_scheduler *grpc_schedule_on_exec_ctx = &exec_ctx_scheduler;
diff --git a/src/core/lib/iomgr/exec_ctx.h b/src/core/lib/iomgr/exec_ctx.h
index 7e50cb9825d1497837ae1c12f52379062e958037..e566f1b3e89318059e20a2aefd6be085a5005df1 100644
--- a/src/core/lib/iomgr/exec_ctx.h
+++ b/src/core/lib/iomgr/exec_ctx.h
@@ -66,17 +66,6 @@ typedef struct grpc_combiner grpc_combiner;
 #ifndef GRPC_EXECUTION_CONTEXT_SANITIZER
 struct grpc_exec_ctx {
   grpc_closure_list closure_list;
-  /** The workqueue we're stealing work from.
-      As items are queued to the execution context, we try to steal one
-      workqueue item and execute it inline (assuming the exec_ctx is not
-      finished) - doing so does not invalidate the workqueue's contract, and
-      provides a small latency win in cases where we get a hit */
-  grpc_workqueue *stealing_from_workqueue;
-  /** The workqueue item that was stolen from the workqueue above. When new
-      items are scheduled to be offloaded to that workqueue, we need to update
-      this like a 1-deep fifo to maintain the invariant that workqueue items
-      queued by one thread are started in order */
-  grpc_closure *stolen_closure;
   /** currently active combiner: updated only via combiner.c */
   grpc_combiner *active_combiner;
   /** last active combiner in the active combiner list */
@@ -89,10 +78,7 @@ struct grpc_exec_ctx {
 /* initializer for grpc_exec_ctx:
    prefer to use GRPC_EXEC_CTX_INIT whenever possible */
 #define GRPC_EXEC_CTX_INIT_WITH_FINISH_CHECK(finish_check, finish_check_arg) \
-  {                                                                          \
-    GRPC_CLOSURE_LIST_INIT, NULL, NULL, NULL, NULL, false, finish_check_arg, \
-        finish_check                                                         \
-  }
+  { GRPC_CLOSURE_LIST_INIT, NULL, NULL, false, finish_check_arg, finish_check }
 #else
 struct grpc_exec_ctx {
   bool cached_ready_to_finish;
@@ -108,6 +94,8 @@ struct grpc_exec_ctx {
 #define GRPC_EXEC_CTX_INIT \
   GRPC_EXEC_CTX_INIT_WITH_FINISH_CHECK(grpc_always_ready_to_finish, NULL)
 
+extern grpc_closure_scheduler *grpc_schedule_on_exec_ctx;
+
 /** Flush any work that has been enqueued onto this grpc_exec_ctx.
  *  Caller must guarantee that no interfering locks are held.
  *  Returns true if work was performed, false otherwise. */
@@ -115,14 +103,6 @@ bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx);
 /** Finish any pending work for a grpc_exec_ctx. Must be called before
  *  the instance is destroyed, or work may be lost. */
 void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx);
-/** Add a closure to be executed in the future.
-    If \a offload_target_or_null is NULL, the closure will be executed at the
-    next exec_ctx.{finish,flush} point.
-    If \a offload_target_or_null is non-NULL, the closure will be scheduled
-    against the workqueue, and a reference to the workqueue will be consumed. */
-void grpc_exec_ctx_sched(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
-                         grpc_error *error,
-                         grpc_workqueue *offload_target_or_null);
 /** Returns true if we'd like to leave this execution context as soon as
     possible: useful for deciding whether to do something more or not depending
     on outside context */
@@ -131,11 +111,6 @@ bool grpc_exec_ctx_ready_to_finish(grpc_exec_ctx *exec_ctx);
 bool grpc_never_ready_to_finish(grpc_exec_ctx *exec_ctx, void *arg_ignored);
 /** A finish check that is always ready to finish */
 bool grpc_always_ready_to_finish(grpc_exec_ctx *exec_ctx, void *arg_ignored);
-/** Add a list of closures to be executed at the next flush/finish point.
- *  Leaves \a list empty. */
-void grpc_exec_ctx_enqueue_list(grpc_exec_ctx *exec_ctx,
-                                grpc_closure_list *list,
-                                grpc_workqueue *offload_target_or_null);
 
 void grpc_exec_ctx_global_init(void);
 
diff --git a/src/core/lib/iomgr/executor.c b/src/core/lib/iomgr/executor.c
index 8d7535d6fe52bd30b095c641248de99d7a67465a..852775564f6c95bc8a77c659cbcad3fa28d2178c 100644
--- a/src/core/lib/iomgr/executor.c
+++ b/src/core/lib/iomgr/executor.c
@@ -77,10 +77,18 @@ static void closure_exec_thread_func(void *ignored) {
       gpr_mu_unlock(&g_executor.mu);
       break;
     } else {
-      grpc_exec_ctx_enqueue_list(&exec_ctx, &g_executor.closures, NULL);
+      grpc_closure *c = g_executor.closures.head;
+      grpc_closure_list_init(&g_executor.closures);
+      gpr_mu_unlock(&g_executor.mu);
+      while (c != NULL) {
+        grpc_closure *next = c->next_data.next;
+        grpc_error *error = c->error_data.error;
+        c->cb(&exec_ctx, c->cb_arg, error);
+        GRPC_ERROR_UNREF(error);
+        c = next;
+      }
+      grpc_exec_ctx_flush(&exec_ctx);
     }
-    gpr_mu_unlock(&g_executor.mu);
-    grpc_exec_ctx_flush(&exec_ctx);
   }
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -112,7 +120,8 @@ static void maybe_spawn_locked() {
   g_executor.pending_join = 1;
 }
 
-void grpc_executor_push(grpc_closure *closure, grpc_error *error) {
+static void executor_push(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+                          grpc_error *error) {
   gpr_mu_lock(&g_executor.mu);
   if (g_executor.shutting_down == 0) {
     grpc_closure_list_append(&g_executor.closures, closure, error);
@@ -121,9 +130,8 @@ void grpc_executor_push(grpc_closure *closure, grpc_error *error) {
   gpr_mu_unlock(&g_executor.mu);
 }
 
-void grpc_executor_shutdown() {
+void grpc_executor_shutdown(grpc_exec_ctx *exec_ctx) {
   int pending_join;
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   gpr_mu_lock(&g_executor.mu);
   pending_join = g_executor.pending_join;
@@ -133,11 +141,24 @@ void grpc_executor_shutdown() {
    * list below because we aren't accepting new work */
 
   /* Execute pending callbacks, some may be performing cleanups */
-  grpc_exec_ctx_enqueue_list(&exec_ctx, &g_executor.closures, NULL);
-  grpc_exec_ctx_finish(&exec_ctx);
+  grpc_closure *c = g_executor.closures.head;
+  grpc_closure_list_init(&g_executor.closures);
+  while (c != NULL) {
+    grpc_closure *next = c->next_data.next;
+    grpc_error *error = c->error_data.error;
+    c->cb(exec_ctx, c->cb_arg, error);
+    GRPC_ERROR_UNREF(error);
+    c = next;
+  }
+  grpc_exec_ctx_flush(exec_ctx);
   GPR_ASSERT(grpc_closure_list_empty(g_executor.closures));
   if (pending_join) {
     gpr_thd_join(g_executor.tid);
   }
   gpr_mu_destroy(&g_executor.mu);
 }
+
+static const grpc_closure_scheduler_vtable executor_vtable = {executor_push,
+                                                              executor_push};
+static grpc_closure_scheduler executor_scheduler = {&executor_vtable};
+grpc_closure_scheduler *grpc_executor_scheduler = &executor_scheduler;
diff --git a/src/core/lib/iomgr/executor.h b/src/core/lib/iomgr/executor.h
index da9dcd07d02aa1a24a1fc50d63da9c2aa38d01ed..1213016383efdf16c928117c575a6b08dfe83a66 100644
--- a/src/core/lib/iomgr/executor.h
+++ b/src/core/lib/iomgr/executor.h
@@ -43,11 +43,9 @@
  * non-blocking solution available. */
 void grpc_executor_init();
 
-/** Enqueue \a closure for its eventual execution of \a f(arg) on a separate
- * thread */
-void grpc_executor_push(grpc_closure *closure, grpc_error *error);
+extern grpc_closure_scheduler *grpc_executor_scheduler;
 
 /** Shutdown the executor, running all pending work as part of the call */
-void grpc_executor_shutdown();
+void grpc_executor_shutdown(grpc_exec_ctx *exec_ctx);
 
 #endif /* GRPC_CORE_LIB_IOMGR_EXECUTOR_H */
diff --git a/src/core/lib/iomgr/iocp_windows.c b/src/core/lib/iomgr/iocp_windows.c
index 60ebe43676dce3b8c4d2549a3003ec6700a91ecf..f0f4a6ff39096b7dcf19fea7d12010a166fa5537 100644
--- a/src/core/lib/iomgr/iocp_windows.c
+++ b/src/core/lib/iomgr/iocp_windows.c
@@ -80,7 +80,6 @@ grpc_iocp_work_status grpc_iocp_work(grpc_exec_ctx *exec_ctx,
   LPOVERLAPPED overlapped;
   grpc_winsocket *socket;
   grpc_winsocket_callback_info *info;
-  grpc_closure *closure = NULL;
   success = GetQueuedCompletionStatus(
       g_iocp, &bytes, &completion_key, &overlapped,
       deadline_to_millis_timeout(deadline, gpr_now(deadline.clock_type)));
diff --git a/src/core/lib/iomgr/iomgr.c b/src/core/lib/iomgr/iomgr.c
index 3470b5ac815e8e6af829a6265552a78a8028f697..001e528409978d562588e1cc2a2cba32294c5639 100644
--- a/src/core/lib/iomgr/iomgr.c
+++ b/src/core/lib/iomgr/iomgr.c
@@ -83,11 +83,10 @@ static void dump_objects(const char *kind) {
   }
 }
 
-void grpc_iomgr_shutdown(void) {
+void grpc_iomgr_shutdown(grpc_exec_ctx *exec_ctx) {
   gpr_timespec shutdown_deadline = gpr_time_add(
       gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(10, GPR_TIMESPAN));
   gpr_timespec last_warning_time = gpr_now(GPR_CLOCK_REALTIME);
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   grpc_iomgr_platform_flush();
 
@@ -104,10 +103,9 @@ void grpc_iomgr_shutdown(void) {
       }
       last_warning_time = gpr_now(GPR_CLOCK_REALTIME);
     }
-    if (grpc_timer_check(&exec_ctx, gpr_inf_future(GPR_CLOCK_MONOTONIC),
-                         NULL)) {
+    if (grpc_timer_check(exec_ctx, gpr_inf_future(GPR_CLOCK_MONOTONIC), NULL)) {
       gpr_mu_unlock(&g_mu);
-      grpc_exec_ctx_flush(&exec_ctx);
+      grpc_exec_ctx_flush(exec_ctx);
       grpc_iomgr_platform_flush();
       gpr_mu_lock(&g_mu);
       continue;
@@ -139,8 +137,8 @@ void grpc_iomgr_shutdown(void) {
   }
   gpr_mu_unlock(&g_mu);
 
-  grpc_timer_list_shutdown(&exec_ctx);
-  grpc_exec_ctx_finish(&exec_ctx);
+  grpc_timer_list_shutdown(exec_ctx);
+  grpc_exec_ctx_flush(exec_ctx);
 
   /* ensure all threads have left g_mu */
   gpr_mu_lock(&g_mu);
diff --git a/src/core/lib/iomgr/iomgr.h b/src/core/lib/iomgr/iomgr.h
index c1cfaf302e872e4f73f90d2913c39c766bb2828a..245a1e08aa2e3e705feadc0fbf25a2e2e11de71b 100644
--- a/src/core/lib/iomgr/iomgr.h
+++ b/src/core/lib/iomgr/iomgr.h
@@ -34,12 +34,14 @@
 #ifndef GRPC_CORE_LIB_IOMGR_IOMGR_H
 #define GRPC_CORE_LIB_IOMGR_IOMGR_H
 
+#include <grpc/impl/codegen/exec_ctx_fwd.h>
 #include "src/core/lib/iomgr/port.h"
 
 /** Initializes the iomgr. */
 void grpc_iomgr_init(void);
 
-/** Signals the intention to shutdown the iomgr. */
-void grpc_iomgr_shutdown(void);
+/** Signals the intention to shutdown the iomgr. Expects to be able to flush
+ * exec_ctx. */
+void grpc_iomgr_shutdown(grpc_exec_ctx *exec_ctx);
 
 #endif /* GRPC_CORE_LIB_IOMGR_IOMGR_H */
diff --git a/src/core/lib/iomgr/pollset_uv.c b/src/core/lib/iomgr/pollset_uv.c
index 3a74b842b6c10780d5fa764786c62e0b6e03f868..ed3edeee9493ca2a8bc69a917b39f2ad818b580f 100644
--- a/src/core/lib/iomgr/pollset_uv.c
+++ b/src/core/lib/iomgr/pollset_uv.c
@@ -83,7 +83,7 @@ void grpc_pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
     // Drain any pending UV callbacks without blocking
     uv_run(uv_default_loop(), UV_RUN_NOWAIT);
   }
-  grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_NONE);
 }
 
 void grpc_pollset_destroy(grpc_pollset *pollset) {
diff --git a/src/core/lib/iomgr/pollset_windows.c b/src/core/lib/iomgr/pollset_windows.c
index 5540303e49ba4413f67e30fa3476d10463fde25c..2a45e708df6a499c3b4fa9560cbff19b88e2df38 100644
--- a/src/core/lib/iomgr/pollset_windows.c
+++ b/src/core/lib/iomgr/pollset_windows.c
@@ -109,7 +109,7 @@ void grpc_pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   pollset->shutting_down = 1;
   grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
   if (!pollset->is_iocp_worker) {
-    grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_NONE);
   } else {
     pollset->on_shutdown = closure;
   }
@@ -167,8 +167,7 @@ grpc_error *grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
       }
 
       if (pollset->shutting_down && pollset->on_shutdown != NULL) {
-        grpc_exec_ctx_sched(exec_ctx, pollset->on_shutdown, GRPC_ERROR_NONE,
-                            NULL);
+        grpc_closure_sched(exec_ctx, pollset->on_shutdown, GRPC_ERROR_NONE);
         pollset->on_shutdown = NULL;
       }
       goto done;
diff --git a/src/core/lib/iomgr/resolve_address.h b/src/core/lib/iomgr/resolve_address.h
index 275924448a16f8b217f024b9bd0d559a7c5d334e..e03d16fa4ead33f357de901232fb0ca6dd0d5a85 100644
--- a/src/core/lib/iomgr/resolve_address.h
+++ b/src/core/lib/iomgr/resolve_address.h
@@ -36,6 +36,7 @@
 
 #include <stddef.h>
 #include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/pollset_set.h"
 
 #define GRPC_MAX_SOCKADDR_SIZE 128
 
@@ -54,6 +55,7 @@ typedef struct {
 /* TODO(ctiller): add a timeout here */
 extern void (*grpc_resolve_address)(grpc_exec_ctx *exec_ctx, const char *addr,
                                     const char *default_port,
+                                    grpc_pollset_set *interested_parties,
                                     grpc_closure *on_done,
                                     grpc_resolved_addresses **addresses);
 /* Destroy resolved addresses */
diff --git a/src/core/lib/iomgr/resolve_address_posix.c b/src/core/lib/iomgr/resolve_address_posix.c
index de791b2b67ceaf3a749b8f0c0d049a30628e8fc1..50e470d14916a23d5e2b5ac2f7c16d8b74c78a4b 100644
--- a/src/core/lib/iomgr/resolve_address_posix.c
+++ b/src/core/lib/iomgr/resolve_address_posix.c
@@ -163,10 +163,9 @@ typedef struct {
 static void do_request_thread(grpc_exec_ctx *exec_ctx, void *rp,
                               grpc_error *error) {
   request *r = rp;
-  grpc_exec_ctx_sched(
+  grpc_closure_sched(
       exec_ctx, r->on_done,
-      grpc_blocking_resolve_address(r->name, r->default_port, r->addrs_out),
-      NULL);
+      grpc_blocking_resolve_address(r->name, r->default_port, r->addrs_out));
   gpr_free(r->name);
   gpr_free(r->default_port);
   gpr_free(r);
@@ -181,20 +180,22 @@ void grpc_resolved_addresses_destroy(grpc_resolved_addresses *addrs) {
 
 static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name,
                                  const char *default_port,
+                                 grpc_pollset_set *interested_parties,
                                  grpc_closure *on_done,
                                  grpc_resolved_addresses **addrs) {
   request *r = gpr_malloc(sizeof(request));
-  grpc_closure_init(&r->request_closure, do_request_thread, r);
+  grpc_closure_init(&r->request_closure, do_request_thread, r,
+                    grpc_executor_scheduler);
   r->name = gpr_strdup(name);
   r->default_port = gpr_strdup(default_port);
   r->on_done = on_done;
   r->addrs_out = addrs;
-  grpc_executor_push(&r->request_closure, GRPC_ERROR_NONE);
+  grpc_closure_sched(exec_ctx, &r->request_closure, GRPC_ERROR_NONE);
 }
 
-void (*grpc_resolve_address)(grpc_exec_ctx *exec_ctx, const char *name,
-                             const char *default_port, grpc_closure *on_done,
-                             grpc_resolved_addresses **addrs) =
-    resolve_address_impl;
+void (*grpc_resolve_address)(
+    grpc_exec_ctx *exec_ctx, const char *name, const char *default_port,
+    grpc_pollset_set *interested_parties, grpc_closure *on_done,
+    grpc_resolved_addresses **addrs) = resolve_address_impl;
 
 #endif
diff --git a/src/core/lib/iomgr/resolve_address_uv.c b/src/core/lib/iomgr/resolve_address_uv.c
index b8295acfa14ba18128d584beb5262c51b8a82625..9b5f3209f05cf131cfe3247e643b03ba61525660 100644
--- a/src/core/lib/iomgr/resolve_address_uv.c
+++ b/src/core/lib/iomgr/resolve_address_uv.c
@@ -98,7 +98,7 @@ static void getaddrinfo_callback(uv_getaddrinfo_t *req, int status,
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_error *error;
   error = handle_addrinfo_result(status, res, r->addresses);
-  grpc_exec_ctx_sched(&exec_ctx, r->on_done, error, NULL);
+  grpc_closure_sched(&exec_ctx, r->on_done, error);
   grpc_exec_ctx_finish(&exec_ctx);
 
   gpr_free(r->hints);
@@ -181,6 +181,7 @@ void grpc_resolved_addresses_destroy(grpc_resolved_addresses *addrs) {
 
 static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name,
                                  const char *default_port,
+                                 grpc_pollset_set *interested_parties,
                                  grpc_closure *on_done,
                                  grpc_resolved_addresses **addrs) {
   uv_getaddrinfo_t *req;
@@ -192,7 +193,7 @@ static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name,
   int s;
   err = try_split_host_port(name, default_port, &host, &port);
   if (err != GRPC_ERROR_NONE) {
-    grpc_exec_ctx_sched(exec_ctx, on_done, err, NULL);
+    grpc_closure_sched(exec_ctx, on_done, err);
     return;
   }
   r = gpr_malloc(sizeof(request));
@@ -216,16 +217,16 @@ static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name,
     *addrs = NULL;
     err = GRPC_ERROR_CREATE("getaddrinfo failed");
     err = grpc_error_set_str(err, GRPC_ERROR_STR_OS_ERROR, uv_strerror(s));
-    grpc_exec_ctx_sched(exec_ctx, on_done, err, NULL);
+    grpc_closure_sched(exec_ctx, on_done, err);
     gpr_free(r);
     gpr_free(req);
     gpr_free(hints);
   }
 }
 
-void (*grpc_resolve_address)(grpc_exec_ctx *exec_ctx, const char *name,
-                             const char *default_port, grpc_closure *on_done,
-                             grpc_resolved_addresses **addrs) =
-    resolve_address_impl;
+void (*grpc_resolve_address)(
+    grpc_exec_ctx *exec_ctx, const char *name, const char *default_port,
+    grpc_pollset_set *interested_parties, grpc_closure *on_done,
+    grpc_resolved_addresses **addrs) = resolve_address_impl;
 
 #endif /* GRPC_UV */
diff --git a/src/core/lib/iomgr/resolve_address_windows.c b/src/core/lib/iomgr/resolve_address_windows.c
index e139293c035ec1c7c2a4c0d8f4b495ec79066535..2439ce3cb79964eeee7ecf8667f7abeff7894814 100644
--- a/src/core/lib/iomgr/resolve_address_windows.c
+++ b/src/core/lib/iomgr/resolve_address_windows.c
@@ -154,7 +154,7 @@ static void do_request_thread(grpc_exec_ctx *exec_ctx, void *rp,
   } else {
     GRPC_ERROR_REF(error);
   }
-  grpc_exec_ctx_sched(exec_ctx, r->on_done, error, NULL);
+  grpc_closure_sched(exec_ctx, r->on_done, error);
   gpr_free(r->name);
   gpr_free(r->default_port);
   gpr_free(r);
@@ -169,20 +169,22 @@ void grpc_resolved_addresses_destroy(grpc_resolved_addresses *addrs) {
 
 static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name,
                                  const char *default_port,
+                                 grpc_pollset_set *interested_parties,
                                  grpc_closure *on_done,
                                  grpc_resolved_addresses **addresses) {
   request *r = gpr_malloc(sizeof(request));
-  grpc_closure_init(&r->request_closure, do_request_thread, r);
+  grpc_closure_init(&r->request_closure, do_request_thread, r,
+                    grpc_executor_scheduler);
   r->name = gpr_strdup(name);
   r->default_port = gpr_strdup(default_port);
   r->on_done = on_done;
   r->addresses = addresses;
-  grpc_executor_push(&r->request_closure, GRPC_ERROR_NONE);
+  grpc_closure_sched(exec_ctx, &r->request_closure, GRPC_ERROR_NONE);
 }
 
-void (*grpc_resolve_address)(grpc_exec_ctx *exec_ctx, const char *name,
-                             const char *default_port, grpc_closure *on_done,
-                             grpc_resolved_addresses **addresses) =
-    resolve_address_impl;
+void (*grpc_resolve_address)(
+    grpc_exec_ctx *exec_ctx, const char *name, const char *default_port,
+    grpc_pollset_set *interested_parties, grpc_closure *on_done,
+    grpc_resolved_addresses **addresses) = resolve_address_impl;
 
 #endif
diff --git a/src/core/lib/iomgr/resource_quota.c b/src/core/lib/iomgr/resource_quota.c
index 213d29600c93f894ab2f9726758a25f1c76313ac..31590cd53b737acf267334325ed9f4bd566cc1bb 100644
--- a/src/core/lib/iomgr/resource_quota.c
+++ b/src/core/lib/iomgr/resource_quota.c
@@ -257,17 +257,16 @@ static void rq_step(grpc_exec_ctx *exec_ctx, void *rq, grpc_error *error) {
   }
 
 done:
-  grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
 }
 
 static void rq_step_sched(grpc_exec_ctx *exec_ctx,
                           grpc_resource_quota *resource_quota) {
   if (resource_quota->step_scheduled) return;
   resource_quota->step_scheduled = true;
-  grpc_resource_quota_internal_ref(resource_quota);
-  grpc_combiner_execute_finally(exec_ctx, resource_quota->combiner,
-                                &resource_quota->rq_step_closure,
-                                GRPC_ERROR_NONE, false);
+  grpc_resource_quota_ref_internal(resource_quota);
+  grpc_closure_sched(exec_ctx, &resource_quota->rq_step_closure,
+                     GRPC_ERROR_NONE);
 }
 
 /* returns true if all allocations are completed */
@@ -294,7 +293,7 @@ static bool rq_alloc(grpc_exec_ctx *exec_ctx,
     }
     if (resource_user->free_pool >= 0) {
       resource_user->allocating = false;
-      grpc_exec_ctx_enqueue_list(exec_ctx, &resource_user->on_allocated, NULL);
+      grpc_closure_list_sched(exec_ctx, &resource_user->on_allocated);
       gpr_mu_unlock(&resource_user->mu);
     } else {
       rulist_add_head(resource_user, GRPC_RULIST_AWAITING_ALLOCATION);
@@ -345,7 +344,7 @@ static bool rq_reclaim(grpc_exec_ctx *exec_ctx,
             destructive ? "destructive" : "benign");
   }
   resource_quota->reclaiming = true;
-  grpc_resource_quota_internal_ref(resource_quota);
+  grpc_resource_quota_ref_internal(resource_quota);
   grpc_closure *c = resource_user->reclaimers[destructive];
   GPR_ASSERT(c);
   resource_quota->debug_only_last_reclaimer_resource_user = resource_user;
@@ -371,21 +370,10 @@ static void ru_slice_ref(void *p) {
   gpr_ref(&rc->refs);
 }
 
-static void ru_slice_unref(void *p) {
+static void ru_slice_unref(grpc_exec_ctx *exec_ctx, void *p) {
   ru_slice_refcount *rc = p;
   if (gpr_unref(&rc->refs)) {
-    /* TODO(ctiller): this is dangerous, but I think safe for now:
-       we have no guarantee here that we're at a safe point for creating an
-       execution context, but we have no way of writing this code otherwise.
-       In the future: consider lifting grpc_slice to grpc, and offering an
-       internal_{ref,unref} pair that is execution context aware.
-       Alternatively,
-       make exec_ctx be thread local and 'do the right thing' (whatever that
-       is)
-       if NULL */
-    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, rc->resource_user, rc->size);
-    grpc_exec_ctx_finish(&exec_ctx);
+    grpc_resource_user_free(exec_ctx, rc->resource_user, rc->size);
     gpr_free(rc);
   }
 }
@@ -439,7 +427,7 @@ static bool ru_post_reclaimer(grpc_exec_ctx *exec_ctx,
   resource_user->new_reclaimers[destructive] = NULL;
   GPR_ASSERT(resource_user->reclaimers[destructive] == NULL);
   if (gpr_atm_acq_load(&resource_user->shutdown) > 0) {
-    grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_CANCELLED, NULL);
+    grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_CANCELLED);
     return false;
   }
   resource_user->reclaimers[destructive] = closure;
@@ -480,10 +468,10 @@ static void ru_post_destructive_reclaimer(grpc_exec_ctx *exec_ctx, void *ru,
 
 static void ru_shutdown(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) {
   grpc_resource_user *resource_user = ru;
-  grpc_exec_ctx_sched(exec_ctx, resource_user->reclaimers[0],
-                      GRPC_ERROR_CANCELLED, NULL);
-  grpc_exec_ctx_sched(exec_ctx, resource_user->reclaimers[1],
-                      GRPC_ERROR_CANCELLED, NULL);
+  grpc_closure_sched(exec_ctx, resource_user->reclaimers[0],
+                     GRPC_ERROR_CANCELLED);
+  grpc_closure_sched(exec_ctx, resource_user->reclaimers[1],
+                     GRPC_ERROR_CANCELLED);
   resource_user->reclaimers[0] = NULL;
   resource_user->reclaimers[1] = NULL;
   rulist_remove(resource_user, GRPC_RULIST_RECLAIMER_BENIGN);
@@ -496,15 +484,15 @@ static void ru_destroy(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) {
   for (int i = 0; i < GRPC_RULIST_COUNT; i++) {
     rulist_remove(resource_user, (grpc_rulist)i);
   }
-  grpc_exec_ctx_sched(exec_ctx, resource_user->reclaimers[0],
-                      GRPC_ERROR_CANCELLED, NULL);
-  grpc_exec_ctx_sched(exec_ctx, resource_user->reclaimers[1],
-                      GRPC_ERROR_CANCELLED, NULL);
+  grpc_closure_sched(exec_ctx, resource_user->reclaimers[0],
+                     GRPC_ERROR_CANCELLED);
+  grpc_closure_sched(exec_ctx, resource_user->reclaimers[1],
+                     GRPC_ERROR_CANCELLED);
   if (resource_user->free_pool != 0) {
     resource_user->resource_quota->free_pool += resource_user->free_pool;
     rq_step_sched(exec_ctx, resource_user->resource_quota);
   }
-  grpc_resource_quota_internal_unref(exec_ctx, resource_user->resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_user->resource_quota);
   gpr_mu_destroy(&resource_user->mu);
   gpr_free(resource_user->name);
   gpr_free(resource_user);
@@ -540,7 +528,7 @@ static void rq_resize(grpc_exec_ctx *exec_ctx, void *args, grpc_error *error) {
   a->resource_quota->size += delta;
   a->resource_quota->free_pool += delta;
   rq_step_sched(exec_ctx, a->resource_quota);
-  grpc_resource_quota_internal_unref(exec_ctx, a->resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, a->resource_quota);
   gpr_free(a);
 }
 
@@ -549,7 +537,7 @@ static void rq_reclamation_done(grpc_exec_ctx *exec_ctx, void *rq,
   grpc_resource_quota *resource_quota = rq;
   resource_quota->reclaiming = false;
   rq_step_sched(exec_ctx, resource_quota);
-  grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
 }
 
 /*******************************************************************************
@@ -571,16 +559,19 @@ grpc_resource_quota *grpc_resource_quota_create(const char *name) {
     gpr_asprintf(&resource_quota->name, "anonymous_pool_%" PRIxPTR,
                  (intptr_t)resource_quota);
   }
-  grpc_closure_init(&resource_quota->rq_step_closure, rq_step, resource_quota);
+  grpc_closure_init(
+      &resource_quota->rq_step_closure, rq_step, resource_quota,
+      grpc_combiner_finally_scheduler(resource_quota->combiner, true));
   grpc_closure_init(&resource_quota->rq_reclamation_done_closure,
-                    rq_reclamation_done, resource_quota);
+                    rq_reclamation_done, resource_quota,
+                    grpc_combiner_scheduler(resource_quota->combiner, false));
   for (int i = 0; i < GRPC_RULIST_COUNT; i++) {
     resource_quota->roots[i] = NULL;
   }
   return resource_quota;
 }
 
-void grpc_resource_quota_internal_unref(grpc_exec_ctx *exec_ctx,
+void grpc_resource_quota_unref_internal(grpc_exec_ctx *exec_ctx,
                                         grpc_resource_quota *resource_quota) {
   if (gpr_unref(&resource_quota->refs)) {
     grpc_combiner_destroy(exec_ctx, resource_quota->combiner);
@@ -592,11 +583,11 @@ void grpc_resource_quota_internal_unref(grpc_exec_ctx *exec_ctx,
 /* Public API */
 void grpc_resource_quota_unref(grpc_resource_quota *resource_quota) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
-grpc_resource_quota *grpc_resource_quota_internal_ref(
+grpc_resource_quota *grpc_resource_quota_ref_internal(
     grpc_resource_quota *resource_quota) {
   gpr_ref(&resource_quota->refs);
   return resource_quota;
@@ -604,7 +595,7 @@ grpc_resource_quota *grpc_resource_quota_internal_ref(
 
 /* Public API */
 void grpc_resource_quota_ref(grpc_resource_quota *resource_quota) {
-  grpc_resource_quota_internal_ref(resource_quota);
+  grpc_resource_quota_ref_internal(resource_quota);
 }
 
 /* Public API */
@@ -612,11 +603,10 @@ void grpc_resource_quota_resize(grpc_resource_quota *resource_quota,
                                 size_t size) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   rq_resize_args *a = gpr_malloc(sizeof(*a));
-  a->resource_quota = grpc_resource_quota_internal_ref(resource_quota);
+  a->resource_quota = grpc_resource_quota_ref_internal(resource_quota);
   a->size = (int64_t)size;
-  grpc_closure_init(&a->closure, rq_resize, a);
-  grpc_combiner_execute(&exec_ctx, resource_quota->combiner, &a->closure,
-                        GRPC_ERROR_NONE, false);
+  grpc_closure_init(&a->closure, rq_resize, a, grpc_schedule_on_exec_ctx);
+  grpc_closure_sched(&exec_ctx, &a->closure, GRPC_ERROR_NONE);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
@@ -629,7 +619,7 @@ grpc_resource_quota *grpc_resource_quota_from_channel_args(
   for (size_t i = 0; i < channel_args->num_args; i++) {
     if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
       if (channel_args->args[i].type == GRPC_ARG_POINTER) {
-        return grpc_resource_quota_internal_ref(
+        return grpc_resource_quota_ref_internal(
             channel_args->args[i].value.pointer.p);
       } else {
         gpr_log(GPR_DEBUG, GRPC_ARG_RESOURCE_QUOTA " should be a pointer");
@@ -644,7 +634,9 @@ static void *rq_copy(void *rq) {
   return rq;
 }
 
-static void rq_destroy(void *rq) { grpc_resource_quota_unref(rq); }
+static void rq_destroy(grpc_exec_ctx *exec_ctx, void *rq) {
+  grpc_resource_quota_unref_internal(exec_ctx, rq);
+}
 
 static int rq_cmp(void *a, void *b) { return GPR_ICMP(a, b); }
 
@@ -661,17 +653,21 @@ grpc_resource_user *grpc_resource_user_create(
     grpc_resource_quota *resource_quota, const char *name) {
   grpc_resource_user *resource_user = gpr_malloc(sizeof(*resource_user));
   resource_user->resource_quota =
-      grpc_resource_quota_internal_ref(resource_quota);
+      grpc_resource_quota_ref_internal(resource_quota);
   grpc_closure_init(&resource_user->allocate_closure, &ru_allocate,
-                    resource_user);
+                    resource_user,
+                    grpc_combiner_scheduler(resource_quota->combiner, false));
   grpc_closure_init(&resource_user->add_to_free_pool_closure,
-                    &ru_add_to_free_pool, resource_user);
+                    &ru_add_to_free_pool, resource_user,
+                    grpc_combiner_scheduler(resource_quota->combiner, false));
   grpc_closure_init(&resource_user->post_reclaimer_closure[0],
-                    &ru_post_benign_reclaimer, resource_user);
+                    &ru_post_benign_reclaimer, resource_user,
+                    grpc_combiner_scheduler(resource_quota->combiner, false));
   grpc_closure_init(&resource_user->post_reclaimer_closure[1],
-                    &ru_post_destructive_reclaimer, resource_user);
-  grpc_closure_init(&resource_user->destroy_closure, &ru_destroy,
-                    resource_user);
+                    &ru_post_destructive_reclaimer, resource_user,
+                    grpc_combiner_scheduler(resource_quota->combiner, false));
+  grpc_closure_init(&resource_user->destroy_closure, &ru_destroy, resource_user,
+                    grpc_combiner_scheduler(resource_quota->combiner, false));
   gpr_mu_init(&resource_user->mu);
   gpr_atm_rel_store(&resource_user->refs, 1);
   gpr_atm_rel_store(&resource_user->shutdown, 0);
@@ -695,6 +691,11 @@ grpc_resource_user *grpc_resource_user_create(
   return resource_user;
 }
 
+grpc_resource_quota *grpc_resource_user_quota(
+    grpc_resource_user *resource_user) {
+  return resource_user->resource_quota;
+}
+
 static void ru_ref_by(grpc_resource_user *resource_user, gpr_atm amount) {
   GPR_ASSERT(amount > 0);
   GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&resource_user->refs, amount) != 0);
@@ -706,9 +707,8 @@ static void ru_unref_by(grpc_exec_ctx *exec_ctx,
   gpr_atm old = gpr_atm_full_fetch_add(&resource_user->refs, -amount);
   GPR_ASSERT(old >= amount);
   if (old == amount) {
-    grpc_combiner_execute(exec_ctx, resource_user->resource_quota->combiner,
-                          &resource_user->destroy_closure, GRPC_ERROR_NONE,
-                          false);
+    grpc_closure_sched(exec_ctx, &resource_user->destroy_closure,
+                       GRPC_ERROR_NONE);
   }
 }
 
@@ -724,9 +724,12 @@ void grpc_resource_user_unref(grpc_exec_ctx *exec_ctx,
 void grpc_resource_user_shutdown(grpc_exec_ctx *exec_ctx,
                                  grpc_resource_user *resource_user) {
   if (gpr_atm_full_fetch_add(&resource_user->shutdown, 1) == 0) {
-    grpc_combiner_execute(exec_ctx, resource_user->resource_quota->combiner,
-                          grpc_closure_create(ru_shutdown, resource_user),
-                          GRPC_ERROR_NONE, false);
+    grpc_closure_sched(exec_ctx,
+                       grpc_closure_create(
+                           ru_shutdown, resource_user,
+                           grpc_combiner_scheduler(
+                               resource_user->resource_quota->combiner, false)),
+                       GRPC_ERROR_NONE);
   }
 }
 
@@ -746,12 +749,11 @@ void grpc_resource_user_alloc(grpc_exec_ctx *exec_ctx,
                              GRPC_ERROR_NONE);
     if (!resource_user->allocating) {
       resource_user->allocating = true;
-      grpc_combiner_execute(exec_ctx, resource_user->resource_quota->combiner,
-                            &resource_user->allocate_closure, GRPC_ERROR_NONE,
-                            false);
+      grpc_closure_sched(exec_ctx, &resource_user->allocate_closure,
+                         GRPC_ERROR_NONE);
     }
   } else {
-    grpc_exec_ctx_sched(exec_ctx, optional_on_done, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, optional_on_done, GRPC_ERROR_NONE);
   }
   gpr_mu_unlock(&resource_user->mu);
 }
@@ -770,9 +772,8 @@ void grpc_resource_user_free(grpc_exec_ctx *exec_ctx,
   if (is_bigger_than_zero && was_zero_or_negative &&
       !resource_user->added_to_free_pool) {
     resource_user->added_to_free_pool = true;
-    grpc_combiner_execute(exec_ctx, resource_user->resource_quota->combiner,
-                          &resource_user->add_to_free_pool_closure,
-                          GRPC_ERROR_NONE, false);
+    grpc_closure_sched(exec_ctx, &resource_user->add_to_free_pool_closure,
+                       GRPC_ERROR_NONE);
   }
   gpr_mu_unlock(&resource_user->mu);
   ru_unref_by(exec_ctx, resource_user, (gpr_atm)size);
@@ -784,9 +785,9 @@ void grpc_resource_user_post_reclaimer(grpc_exec_ctx *exec_ctx,
                                        grpc_closure *closure) {
   GPR_ASSERT(resource_user->new_reclaimers[destructive] == NULL);
   resource_user->new_reclaimers[destructive] = closure;
-  grpc_combiner_execute(exec_ctx, resource_user->resource_quota->combiner,
-                        &resource_user->post_reclaimer_closure[destructive],
-                        GRPC_ERROR_NONE, false);
+  grpc_closure_sched(exec_ctx,
+                     &resource_user->post_reclaimer_closure[destructive],
+                     GRPC_ERROR_NONE);
 }
 
 void grpc_resource_user_finish_reclamation(grpc_exec_ctx *exec_ctx,
@@ -795,18 +796,20 @@ void grpc_resource_user_finish_reclamation(grpc_exec_ctx *exec_ctx,
     gpr_log(GPR_DEBUG, "RQ %s %s: reclamation complete",
             resource_user->resource_quota->name, resource_user->name);
   }
-  grpc_combiner_execute(
-      exec_ctx, resource_user->resource_quota->combiner,
-      &resource_user->resource_quota->rq_reclamation_done_closure,
-      GRPC_ERROR_NONE, false);
+  grpc_closure_sched(
+      exec_ctx, &resource_user->resource_quota->rq_reclamation_done_closure,
+      GRPC_ERROR_NONE);
 }
 
 void grpc_resource_user_slice_allocator_init(
     grpc_resource_user_slice_allocator *slice_allocator,
     grpc_resource_user *resource_user, grpc_iomgr_cb_func cb, void *p) {
-  grpc_closure_init(&slice_allocator->on_allocated, ru_allocated_slices,
-                    slice_allocator);
-  grpc_closure_init(&slice_allocator->on_done, cb, p);
+  grpc_closure_init(
+      &slice_allocator->on_allocated, ru_allocated_slices, slice_allocator,
+      grpc_combiner_scheduler(resource_user->resource_quota->combiner, false));
+  grpc_closure_init(
+      &slice_allocator->on_done, cb, p,
+      grpc_combiner_scheduler(resource_user->resource_quota->combiner, false));
   slice_allocator->resource_user = resource_user;
 }
 
diff --git a/src/core/lib/iomgr/resource_quota.h b/src/core/lib/iomgr/resource_quota.h
index 0181fd978b47f1db6f0bed60f1a6c47715954ac5..d1127ce9ea9bc80a852d934dcaa7328cee91e8ae 100644
--- a/src/core/lib/iomgr/resource_quota.h
+++ b/src/core/lib/iomgr/resource_quota.h
@@ -77,9 +77,9 @@
 
 extern int grpc_resource_quota_trace;
 
-grpc_resource_quota *grpc_resource_quota_internal_ref(
+grpc_resource_quota *grpc_resource_quota_ref_internal(
     grpc_resource_quota *resource_quota);
-void grpc_resource_quota_internal_unref(grpc_exec_ctx *exec_ctx,
+void grpc_resource_quota_unref_internal(grpc_exec_ctx *exec_ctx,
                                         grpc_resource_quota *resource_quota);
 grpc_resource_quota *grpc_resource_quota_from_channel_args(
     const grpc_channel_args *channel_args);
@@ -88,6 +88,12 @@ typedef struct grpc_resource_user grpc_resource_user;
 
 grpc_resource_user *grpc_resource_user_create(
     grpc_resource_quota *resource_quota, const char *name);
+
+/* Returns a borrowed reference to the underlying resource quota for this
+   resource user. */
+grpc_resource_quota *grpc_resource_user_quota(
+    grpc_resource_user *resource_user);
+
 void grpc_resource_user_ref(grpc_resource_user *resource_user);
 void grpc_resource_user_unref(grpc_exec_ctx *exec_ctx,
                               grpc_resource_user *resource_user);
diff --git a/src/core/lib/iomgr/socket_mutator.c b/src/core/lib/iomgr/socket_mutator.c
index 8b1efb6bab0e6ff4982e9921101f25742b7bb584..34b61dcfe5a58aaaabea256587d41c72e754cdbc 100644
--- a/src/core/lib/iomgr/socket_mutator.c
+++ b/src/core/lib/iomgr/socket_mutator.c
@@ -76,7 +76,7 @@ static void *socket_mutator_arg_copy(void *p) {
   return grpc_socket_mutator_ref(p);
 }
 
-static void socket_mutator_arg_destroy(void *p) {
+static void socket_mutator_arg_destroy(grpc_exec_ctx *exec_ctx, void *p) {
   grpc_socket_mutator_unref(p);
 }
 
diff --git a/src/core/lib/iomgr/socket_windows.c b/src/core/lib/iomgr/socket_windows.c
index 54911e0e31f73c567102ebe9c169b7d6b9d02586..2f2e02f71572a77cce0432b180bfc31d53c87bd7 100644
--- a/src/core/lib/iomgr/socket_windows.c
+++ b/src/core/lib/iomgr/socket_windows.c
@@ -131,7 +131,7 @@ static void socket_notify_on_iocp(grpc_exec_ctx *exec_ctx,
   gpr_mu_lock(&socket->state_mu);
   if (info->has_pending_iocp) {
     info->has_pending_iocp = 0;
-    grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_NONE);
   } else {
     info->closure = closure;
   }
@@ -154,7 +154,7 @@ void grpc_socket_become_ready(grpc_exec_ctx *exec_ctx, grpc_winsocket *socket,
   GPR_ASSERT(!info->has_pending_iocp);
   gpr_mu_lock(&socket->state_mu);
   if (info->closure) {
-    grpc_exec_ctx_sched(exec_ctx, info->closure, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, info->closure, GRPC_ERROR_NONE);
     info->closure = NULL;
   } else {
     info->has_pending_iocp = 1;
diff --git a/src/core/lib/iomgr/tcp_client_posix.c b/src/core/lib/iomgr/tcp_client_posix.c
index a3a70a8ed75fa07fc4bd8ef312f9d7d2ba2d198c..9a77c92016b7076840cd485355604a4fcbd0ba8a 100644
--- a/src/core/lib/iomgr/tcp_client_posix.c
+++ b/src/core/lib/iomgr/tcp_client_posix.c
@@ -65,6 +65,7 @@ typedef struct {
   grpc_fd *fd;
   gpr_timespec deadline;
   grpc_timer alarm;
+  grpc_closure on_alarm;
   int refs;
   grpc_closure write_closure;
   grpc_pollset_set *interested_parties;
@@ -128,7 +129,7 @@ static void tc_on_alarm(grpc_exec_ctx *exec_ctx, void *acp, grpc_error *error) {
   if (done) {
     gpr_mu_destroy(&ac->mu);
     gpr_free(ac->addr_str);
-    grpc_channel_args_destroy(ac->channel_args);
+    grpc_channel_args_destroy(exec_ctx, ac->channel_args);
     gpr_free(ac);
   }
 }
@@ -148,8 +149,8 @@ grpc_endpoint *grpc_tcp_client_create_from_fd(
             &channel_args->args[i], options);
       } else if (0 ==
                  strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
-        grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
-        resource_quota = grpc_resource_quota_internal_ref(
+        grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
+        resource_quota = grpc_resource_quota_ref_internal(
             channel_args->args[i].value.pointer.p);
       }
     }
@@ -157,7 +158,7 @@ grpc_endpoint *grpc_tcp_client_create_from_fd(
 
   grpc_endpoint *ep =
       grpc_tcp_create(fd, resource_quota, tcp_read_chunk_size, addr_str);
-  grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
   return ep;
 }
 
@@ -262,10 +263,10 @@ finish:
   if (done) {
     gpr_mu_destroy(&ac->mu);
     gpr_free(ac->addr_str);
-    grpc_channel_args_destroy(ac->channel_args);
+    grpc_channel_args_destroy(exec_ctx, ac->channel_args);
     gpr_free(ac);
   }
-  grpc_exec_ctx_sched(exec_ctx, closure, error, NULL);
+  grpc_closure_sched(exec_ctx, closure, error);
 }
 
 static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
@@ -294,7 +295,7 @@ static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
 
   error = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode, &fd);
   if (error != GRPC_ERROR_NONE) {
-    grpc_exec_ctx_sched(exec_ctx, closure, error, NULL);
+    grpc_closure_sched(exec_ctx, closure, error);
     return;
   }
   if (dsmode == GRPC_DSMODE_IPV4) {
@@ -303,7 +304,7 @@ static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
     addr = &addr4_copy;
   }
   if ((error = prepare_socket(addr, fd, channel_args)) != GRPC_ERROR_NONE) {
-    grpc_exec_ctx_sched(exec_ctx, closure, error, NULL);
+    grpc_closure_sched(exec_ctx, closure, error);
     return;
   }
 
@@ -321,14 +322,13 @@ static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
   if (err >= 0) {
     *ep =
         grpc_tcp_client_create_from_fd(exec_ctx, fdobj, channel_args, addr_str);
-    grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_NONE);
     goto done;
   }
 
   if (errno != EWOULDBLOCK && errno != EINPROGRESS) {
     grpc_fd_orphan(exec_ctx, fdobj, NULL, NULL, "tcp_client_connect_error");
-    grpc_exec_ctx_sched(exec_ctx, closure, GRPC_OS_ERROR(errno, "connect"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, closure, GRPC_OS_ERROR(errno, "connect"));
     goto done;
   }
 
@@ -343,8 +343,8 @@ static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
   addr_str = NULL;
   gpr_mu_init(&ac->mu);
   ac->refs = 2;
-  ac->write_closure.cb = on_writable;
-  ac->write_closure.cb_arg = ac;
+  grpc_closure_init(&ac->write_closure, on_writable, ac,
+                    grpc_schedule_on_exec_ctx);
   ac->channel_args = grpc_channel_args_copy(channel_args);
 
   if (grpc_tcp_trace) {
@@ -353,9 +353,10 @@ static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
   }
 
   gpr_mu_lock(&ac->mu);
+  grpc_closure_init(&ac->on_alarm, tc_on_alarm, ac, grpc_schedule_on_exec_ctx);
   grpc_timer_init(exec_ctx, &ac->alarm,
                   gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
-                  tc_on_alarm, ac, gpr_now(GPR_CLOCK_MONOTONIC));
+                  &ac->on_alarm, gpr_now(GPR_CLOCK_MONOTONIC));
   grpc_fd_notify_on_write(exec_ctx, ac->fd, &ac->write_closure);
   gpr_mu_unlock(&ac->mu);
 
diff --git a/src/core/lib/iomgr/tcp_client_uv.c b/src/core/lib/iomgr/tcp_client_uv.c
index b07f9ceffa359b4545ecbce9a4e3b18d2b8b7ac4..5225a5402b2c99dbcb76eb1d832f1edfcc457c08 100644
--- a/src/core/lib/iomgr/tcp_client_uv.c
+++ b/src/core/lib/iomgr/tcp_client_uv.c
@@ -49,6 +49,7 @@
 typedef struct grpc_uv_tcp_connect {
   uv_connect_t connect_req;
   grpc_timer alarm;
+  grpc_closure on_alarm;
   uv_tcp_t *tcp_handle;
   grpc_closure *closure;
   grpc_endpoint **endpoint;
@@ -59,7 +60,7 @@ typedef struct grpc_uv_tcp_connect {
 
 static void uv_tcp_connect_cleanup(grpc_exec_ctx *exec_ctx,
                                    grpc_uv_tcp_connect *connect) {
-  grpc_resource_quota_internal_unref(exec_ctx, connect->resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, connect->resource_quota);
   gpr_free(connect);
 }
 
@@ -110,7 +111,7 @@ static void uv_tc_on_connect(uv_connect_t *req, int status) {
   if (done) {
     uv_tcp_connect_cleanup(&exec_ctx, connect);
   }
-  grpc_exec_ctx_sched(&exec_ctx, closure, error, NULL);
+  grpc_closure_sched(&exec_ctx, closure, error);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
@@ -128,8 +129,8 @@ static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
   if (channel_args != NULL) {
     for (size_t i = 0; i < channel_args->num_args; i++) {
       if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
-        grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
-        resource_quota = grpc_resource_quota_internal_ref(
+        grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
+        resource_quota = grpc_resource_quota_ref_internal(
             channel_args->args[i].value.pointer.p);
       }
     }
@@ -148,9 +149,11 @@ static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
   uv_tcp_connect(&connect->connect_req, connect->tcp_handle,
                  (const struct sockaddr *)resolved_addr->addr,
                  uv_tc_on_connect);
+  grpc_closure_init(&connect->on_alarm, uv_tc_on_alarm, connect,
+                    grpc_schedule_on_exec_ctx);
   grpc_timer_init(exec_ctx, &connect->alarm,
                   gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
-                  uv_tc_on_alarm, connect, gpr_now(GPR_CLOCK_MONOTONIC));
+                  &connect->on_alarm, gpr_now(GPR_CLOCK_MONOTONIC));
 }
 
 // overridden by api_fuzzer.c
diff --git a/src/core/lib/iomgr/tcp_client_windows.c b/src/core/lib/iomgr/tcp_client_windows.c
index 1127588ebc74dbc86f1377daf62648857b505e8d..1e84ec3a1ec39d91cb6fd4929eaa33db04cfe732 100644
--- a/src/core/lib/iomgr/tcp_client_windows.c
+++ b/src/core/lib/iomgr/tcp_client_windows.c
@@ -58,6 +58,7 @@ typedef struct {
   grpc_winsocket *socket;
   gpr_timespec deadline;
   grpc_timer alarm;
+  grpc_closure on_alarm;
   char *addr_name;
   int refs;
   grpc_closure on_connect;
@@ -71,7 +72,7 @@ static void async_connect_unlock_and_cleanup(grpc_exec_ctx *exec_ctx,
   int done = (--ac->refs == 0);
   gpr_mu_unlock(&ac->mu);
   if (done) {
-    grpc_resource_quota_internal_unref(exec_ctx, ac->resource_quota);
+    grpc_resource_quota_unref_internal(exec_ctx, ac->resource_quota);
     gpr_mu_destroy(&ac->mu);
     gpr_free(ac->addr_name);
     gpr_free(ac);
@@ -129,7 +130,7 @@ static void on_connect(grpc_exec_ctx *exec_ctx, void *acp, grpc_error *error) {
   async_connect_unlock_and_cleanup(exec_ctx, ac, socket);
   /* If the connection was aborted, the callback was already called when
      the deadline was met. */
-  grpc_exec_ctx_sched(exec_ctx, on_done, error, NULL);
+  grpc_closure_sched(exec_ctx, on_done, error);
 }
 
 /* Tries to issue one async connection, then schedules both an IOCP
@@ -157,8 +158,8 @@ void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *on_done,
   if (channel_args != NULL) {
     for (size_t i = 0; i < channel_args->num_args; i++) {
       if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
-        grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
-        resource_quota = grpc_resource_quota_internal_ref(
+        grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
+        resource_quota = grpc_resource_quota_ref_internal(
             channel_args->args[i].value.pointer.p);
       }
     }
@@ -227,9 +228,10 @@ void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *on_done,
   ac->addr_name = grpc_sockaddr_to_uri(addr);
   ac->endpoint = endpoint;
   ac->resource_quota = resource_quota;
-  grpc_closure_init(&ac->on_connect, on_connect, ac);
+  grpc_closure_init(&ac->on_connect, on_connect, ac, grpc_schedule_on_exec_ctx);
 
-  grpc_timer_init(exec_ctx, &ac->alarm, deadline, on_alarm, ac,
+  grpc_closure_init(&ac->on_alarm, on_alarm, ac, grpc_schedule_on_exec_ctx);
+  grpc_timer_init(exec_ctx, &ac->alarm, deadline, &ac->on_alarm,
                   gpr_now(GPR_CLOCK_MONOTONIC));
   grpc_socket_notify_on_write(exec_ctx, socket, &ac->on_connect);
   return;
@@ -246,8 +248,8 @@ failure:
   } else if (sock != INVALID_SOCKET) {
     closesocket(sock);
   }
-  grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
-  grpc_exec_ctx_sched(exec_ctx, on_done, final_error, NULL);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
+  grpc_closure_sched(exec_ctx, on_done, final_error);
 }
 
 #endif /* GRPC_WINSOCK_SOCKET */
diff --git a/src/core/lib/iomgr/tcp_posix.c b/src/core/lib/iomgr/tcp_posix.c
index 540305e4fac8287dac60b82ccc6fcc9e67803a65..ece44978b0f2a68abdcbc999ec77ca99a141df74 100644
--- a/src/core/lib/iomgr/tcp_posix.c
+++ b/src/core/lib/iomgr/tcp_posix.c
@@ -56,6 +56,7 @@
 #include "src/core/lib/debug/trace.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
@@ -127,7 +128,7 @@ static void tcp_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
 static void tcp_free(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
   grpc_fd_orphan(exec_ctx, tcp->em_fd, tcp->release_fd_cb, tcp->release_fd,
                  "tcp_unref_orphan");
-  grpc_slice_buffer_destroy(&tcp->last_read_buffer);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &tcp->last_read_buffer);
   grpc_resource_user_unref(exec_ctx, tcp->resource_user);
   gpr_free(tcp->peer_string);
   gpr_free(tcp);
@@ -168,7 +169,7 @@ static void tcp_ref(grpc_tcp *tcp) { gpr_ref(&tcp->refcount); }
 static void tcp_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
   grpc_network_status_unregister_endpoint(ep);
   grpc_tcp *tcp = (grpc_tcp *)ep;
-  grpc_slice_buffer_reset_and_unref(&tcp->last_read_buffer);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &tcp->last_read_buffer);
   TCP_UNREF(exec_ctx, tcp, "destroy");
 }
 
@@ -235,14 +236,15 @@ static void tcp_do_read(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
       /* We've consumed the edge, request a new one */
       grpc_fd_notify_on_read(exec_ctx, tcp->em_fd, &tcp->read_closure);
     } else {
-      grpc_slice_buffer_reset_and_unref(tcp->incoming_buffer);
+      grpc_slice_buffer_reset_and_unref_internal(exec_ctx,
+                                                 tcp->incoming_buffer);
       call_read_cb(exec_ctx, tcp,
                    tcp_annotate_error(GRPC_OS_ERROR(errno, "recvmsg"), tcp));
       TCP_UNREF(exec_ctx, tcp, "read");
     }
   } else if (read_bytes == 0) {
     /* 0 read size ==> end of stream */
-    grpc_slice_buffer_reset_and_unref(tcp->incoming_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx, tcp->incoming_buffer);
     call_read_cb(exec_ctx, tcp,
                  tcp_annotate_error(GRPC_ERROR_CREATE("Socket closed"), tcp));
     TCP_UNREF(exec_ctx, tcp, "read");
@@ -268,8 +270,9 @@ static void tcp_read_allocation_done(grpc_exec_ctx *exec_ctx, void *tcpp,
                                      grpc_error *error) {
   grpc_tcp *tcp = tcpp;
   if (error != GRPC_ERROR_NONE) {
-    grpc_slice_buffer_reset_and_unref(tcp->incoming_buffer);
-    grpc_slice_buffer_reset_and_unref(&tcp->last_read_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx, tcp->incoming_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx,
+                                               &tcp->last_read_buffer);
     call_read_cb(exec_ctx, tcp, GRPC_ERROR_REF(error));
     TCP_UNREF(exec_ctx, tcp, "read");
   } else {
@@ -294,8 +297,9 @@ static void tcp_handle_read(grpc_exec_ctx *exec_ctx, void *arg /* grpc_tcp */,
   GPR_ASSERT(!tcp->finished_edge);
 
   if (error != GRPC_ERROR_NONE) {
-    grpc_slice_buffer_reset_and_unref(tcp->incoming_buffer);
-    grpc_slice_buffer_reset_and_unref(&tcp->last_read_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx, tcp->incoming_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx,
+                                               &tcp->last_read_buffer);
     call_read_cb(exec_ctx, tcp, GRPC_ERROR_REF(error));
     TCP_UNREF(exec_ctx, tcp, "read");
   } else {
@@ -309,14 +313,14 @@ static void tcp_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   GPR_ASSERT(tcp->read_cb == NULL);
   tcp->read_cb = cb;
   tcp->incoming_buffer = incoming_buffer;
-  grpc_slice_buffer_reset_and_unref(incoming_buffer);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, incoming_buffer);
   grpc_slice_buffer_swap(incoming_buffer, &tcp->last_read_buffer);
   TCP_REF(tcp, "read");
   if (tcp->finished_edge) {
     tcp->finished_edge = false;
     grpc_fd_notify_on_read(exec_ctx, tcp->em_fd, &tcp->read_closure);
   } else {
-    grpc_exec_ctx_sched(exec_ctx, &tcp->read_closure, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, &tcp->read_closure, GRPC_ERROR_NONE);
   }
 }
 
@@ -460,11 +464,10 @@ static void tcp_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
 
   if (buf->length == 0) {
     GPR_TIMER_END("tcp_write", 0);
-    grpc_exec_ctx_sched(exec_ctx, cb,
-                        grpc_fd_is_shutdown(tcp->em_fd)
-                            ? tcp_annotate_error(GRPC_ERROR_CREATE("EOF"), tcp)
-                            : GRPC_ERROR_NONE,
-                        NULL);
+    grpc_closure_sched(exec_ctx, cb,
+                       grpc_fd_is_shutdown(tcp->em_fd)
+                           ? tcp_annotate_error(GRPC_ERROR_CREATE("EOF"), tcp)
+                           : GRPC_ERROR_NONE);
     return;
   }
   tcp->outgoing_buffer = buf;
@@ -484,7 +487,7 @@ static void tcp_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
       gpr_log(GPR_DEBUG, "write: %s", str);
       grpc_error_free_string(str);
     }
-    grpc_exec_ctx_sched(exec_ctx, cb, error, NULL);
+    grpc_closure_sched(exec_ctx, cb, error);
   }
 
   GPR_TIMER_END("tcp_write", 0);
@@ -552,10 +555,10 @@ grpc_endpoint *grpc_tcp_create(grpc_fd *em_fd,
   gpr_ref_init(&tcp->refcount, 1);
   gpr_atm_no_barrier_store(&tcp->shutdown_count, 0);
   tcp->em_fd = em_fd;
-  tcp->read_closure.cb = tcp_handle_read;
-  tcp->read_closure.cb_arg = tcp;
-  tcp->write_closure.cb = tcp_handle_write;
-  tcp->write_closure.cb_arg = tcp;
+  grpc_closure_init(&tcp->read_closure, tcp_handle_read, tcp,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&tcp->write_closure, tcp_handle_write, tcp,
+                    grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&tcp->last_read_buffer);
   tcp->resource_user = grpc_resource_user_create(resource_quota, peer_string);
   grpc_resource_user_slice_allocator_init(
@@ -579,7 +582,7 @@ void grpc_tcp_destroy_and_release_fd(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   GPR_ASSERT(ep->vtable == &vtable);
   tcp->release_fd = fd;
   tcp->release_fd_cb = done;
-  grpc_slice_buffer_reset_and_unref(&tcp->last_read_buffer);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &tcp->last_read_buffer);
   TCP_UNREF(exec_ctx, tcp, "destroy");
 }
 
diff --git a/src/core/lib/iomgr/tcp_server_posix.c b/src/core/lib/iomgr/tcp_server_posix.c
index 179f47ef769d29ef742202410521bbde3cc8ee33..20efb678b230b4e904681bb70c567f9a05df579b 100644
--- a/src/core/lib/iomgr/tcp_server_posix.c
+++ b/src/core/lib/iomgr/tcp_server_posix.c
@@ -167,18 +167,18 @@ grpc_error *grpc_tcp_server_create(grpc_exec_ctx *exec_ctx,
         s->so_reuseport =
             has_so_reuseport && (args->args[i].value.integer != 0);
       } else {
-        grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+        grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
         gpr_free(s);
         return GRPC_ERROR_CREATE(GRPC_ARG_ALLOW_REUSEPORT
                                  " must be an integer");
       }
     } else if (0 == strcmp(GRPC_ARG_RESOURCE_QUOTA, args->args[i].key)) {
       if (args->args[i].type == GRPC_ARG_POINTER) {
-        grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+        grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
         s->resource_quota =
-            grpc_resource_quota_internal_ref(args->args[i].value.pointer.p);
+            grpc_resource_quota_ref_internal(args->args[i].value.pointer.p);
       } else {
-        grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+        grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
         gpr_free(s);
         return GRPC_ERROR_CREATE(GRPC_ARG_RESOURCE_QUOTA
                                  " must be a pointer to a buffer pool");
@@ -208,7 +208,7 @@ static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
   GPR_ASSERT(s->shutdown);
   gpr_mu_unlock(&s->mu);
   if (s->shutdown_complete != NULL) {
-    grpc_exec_ctx_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE);
   }
 
   gpr_mu_destroy(&s->mu);
@@ -219,7 +219,7 @@ static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
     gpr_free(sp);
   }
 
-  grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
 
   gpr_free(s);
 }
@@ -254,8 +254,8 @@ static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
     grpc_tcp_listener *sp;
     for (sp = s->head; sp; sp = sp->next) {
       grpc_unlink_if_unix_domain_socket(&sp->addr);
-      sp->destroyed_closure.cb = destroyed_port;
-      sp->destroyed_closure.cb_arg = s;
+      grpc_closure_init(&sp->destroyed_closure, destroyed_port, s,
+                        grpc_schedule_on_exec_ctx);
       grpc_fd_orphan(exec_ctx, sp->emfd, &sp->destroyed_closure, NULL,
                      "tcp_listener_shutdown");
     }
@@ -723,8 +723,8 @@ void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
           "clone_port", clone_port(sp, (unsigned)(pollset_count - 1))));
       for (i = 0; i < pollset_count; i++) {
         grpc_pollset_add_fd(exec_ctx, pollsets[i], sp->emfd);
-        sp->read_closure.cb = on_read;
-        sp->read_closure.cb_arg = sp;
+        grpc_closure_init(&sp->read_closure, on_read, sp,
+                          grpc_schedule_on_exec_ctx);
         grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure);
         s->active_ports++;
         sp = sp->next;
@@ -733,8 +733,8 @@ void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
       for (i = 0; i < pollset_count; i++) {
         grpc_pollset_add_fd(exec_ctx, pollsets[i], sp->emfd);
       }
-      sp->read_closure.cb = on_read;
-      sp->read_closure.cb_arg = sp;
+      grpc_closure_init(&sp->read_closure, on_read, sp,
+                        grpc_schedule_on_exec_ctx);
       grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure);
       s->active_ports++;
       sp = sp->next;
@@ -760,7 +760,7 @@ void grpc_tcp_server_unref(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
   if (gpr_unref(&s->refs)) {
     grpc_tcp_server_shutdown_listeners(exec_ctx, s);
     gpr_mu_lock(&s->mu);
-    grpc_exec_ctx_enqueue_list(exec_ctx, &s->shutdown_starting, NULL);
+    grpc_closure_list_sched(exec_ctx, &s->shutdown_starting);
     gpr_mu_unlock(&s->mu);
     tcp_server_destroy(exec_ctx, s);
   }
diff --git a/src/core/lib/iomgr/tcp_server_uv.c b/src/core/lib/iomgr/tcp_server_uv.c
index e1a174cfa2759f1850bbb29cad5d118c165c3db7..eed2773f8a0b4ef67a97c29ee2f4efc71b806c2e 100644
--- a/src/core/lib/iomgr/tcp_server_uv.c
+++ b/src/core/lib/iomgr/tcp_server_uv.c
@@ -89,11 +89,11 @@ grpc_error *grpc_tcp_server_create(grpc_exec_ctx *exec_ctx,
   for (size_t i = 0; i < (args == NULL ? 0 : args->num_args); i++) {
     if (0 == strcmp(GRPC_ARG_RESOURCE_QUOTA, args->args[i].key)) {
       if (args->args[i].type == GRPC_ARG_POINTER) {
-        grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+        grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
         s->resource_quota =
-            grpc_resource_quota_internal_ref(args->args[i].value.pointer.p);
+            grpc_resource_quota_ref_internal(args->args[i].value.pointer.p);
       } else {
-        grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+        grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
         gpr_free(s);
         return GRPC_ERROR_CREATE(GRPC_ARG_RESOURCE_QUOTA
                                  " must be a pointer to a buffer pool");
@@ -126,7 +126,7 @@ void grpc_tcp_server_shutdown_starting_add(grpc_tcp_server *s,
 
 static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
   if (s->shutdown_complete != NULL) {
-    grpc_exec_ctx_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE);
   }
 
   while (s->head) {
@@ -136,7 +136,7 @@ static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
     gpr_free(sp->handle);
     gpr_free(sp);
   }
-  grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
   gpr_free(s);
 }
 
@@ -170,7 +170,7 @@ void grpc_tcp_server_unref(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
   if (gpr_unref(&s->refs)) {
     /* Complete shutdown_starting work before destroying. */
     grpc_exec_ctx local_exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_exec_ctx_enqueue_list(&local_exec_ctx, &s->shutdown_starting, NULL);
+    grpc_closure_list_sched(&local_exec_ctx, &s->shutdown_starting);
     if (exec_ctx == NULL) {
       grpc_exec_ctx_flush(&local_exec_ctx);
       tcp_server_destroy(&local_exec_ctx, s);
diff --git a/src/core/lib/iomgr/tcp_server_windows.c b/src/core/lib/iomgr/tcp_server_windows.c
index b0c8586bacab55efb34b182373be47ac67197a8e..dafe851ce8b51c7d92fcf4a3773864a4f3c6c9a3 100644
--- a/src/core/lib/iomgr/tcp_server_windows.c
+++ b/src/core/lib/iomgr/tcp_server_windows.c
@@ -116,11 +116,11 @@ grpc_error *grpc_tcp_server_create(grpc_exec_ctx *exec_ctx,
   for (size_t i = 0; i < (args == NULL ? 0 : args->num_args); i++) {
     if (0 == strcmp(GRPC_ARG_RESOURCE_QUOTA, args->args[i].key)) {
       if (args->args[i].type == GRPC_ARG_POINTER) {
-        grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+        grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
         s->resource_quota =
-            grpc_resource_quota_internal_ref(args->args[i].value.pointer.p);
+            grpc_resource_quota_ref_internal(args->args[i].value.pointer.p);
       } else {
-        grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+        grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
         gpr_free(s);
         return GRPC_ERROR_CREATE(GRPC_ARG_RESOURCE_QUOTA
                                  " must be a pointer to a buffer pool");
@@ -155,18 +155,19 @@ static void destroy_server(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_winsocket_destroy(sp->socket);
     gpr_free(sp);
   }
-  grpc_resource_quota_internal_unref(exec_ctx, s->resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota);
   gpr_free(s);
 }
 
 static void finish_shutdown_locked(grpc_exec_ctx *exec_ctx,
                                    grpc_tcp_server *s) {
   if (s->shutdown_complete != NULL) {
-    grpc_exec_ctx_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE);
   }
 
-  grpc_exec_ctx_sched(exec_ctx, grpc_closure_create(destroy_server, s),
-                      GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, grpc_closure_create(destroy_server, s,
+                                                   grpc_schedule_on_exec_ctx),
+                     GRPC_ERROR_NONE);
 }
 
 grpc_tcp_server *grpc_tcp_server_ref(grpc_tcp_server *s) {
@@ -183,7 +184,6 @@ void grpc_tcp_server_shutdown_starting_add(grpc_tcp_server *s,
 }
 
 static void tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
-  int immediately_done = 0;
   grpc_tcp_listener *sp;
   gpr_mu_lock(&s->mu);
 
@@ -204,7 +204,7 @@ void grpc_tcp_server_unref(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
   if (gpr_unref(&s->refs)) {
     grpc_tcp_server_shutdown_listeners(exec_ctx, s);
     gpr_mu_lock(&s->mu);
-    grpc_exec_ctx_enqueue_list(exec_ctx, &s->shutdown_starting, NULL);
+    grpc_closure_list_sched(exec_ctx, &s->shutdown_starting);
     gpr_mu_unlock(&s->mu);
     tcp_server_destroy(exec_ctx, s);
   }
@@ -239,7 +239,7 @@ static grpc_error *prepare_socket(SOCKET sock,
     error = GRPC_WSA_ERROR(WSAGetLastError(), "getsockname");
     goto failure;
   }
-  sockname_temp.len = sockname_temp_len;
+  sockname_temp.len = (size_t)sockname_temp_len;
 
   *port = grpc_sockaddr_get_port(&sockname_temp);
   return GRPC_ERROR_NONE;
@@ -247,7 +247,7 @@ static grpc_error *prepare_socket(SOCKET sock,
 failure:
   GPR_ASSERT(error != GRPC_ERROR_NONE);
   char *tgtaddr = grpc_sockaddr_to_uri(addr);
-  grpc_error *final_error = grpc_error_set_int(
+  grpc_error_set_int(
       grpc_error_set_str(GRPC_ERROR_CREATE_REFERENCING(
                              "Failed to prepare server socket", &error, 1),
                          GRPC_ERROR_STR_TARGET_ADDRESS, tgtaddr),
@@ -260,7 +260,6 @@ failure:
 
 static void decrement_active_ports_and_notify_locked(grpc_exec_ctx *exec_ctx,
                                                      grpc_tcp_listener *sp) {
-  int notify = 0;
   sp->shutting_down = 0;
   GPR_ASSERT(sp->server->active_ports > 0);
   if (0 == --sp->server->active_ports) {
@@ -374,7 +373,7 @@ static void on_accept(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
       int peer_name_len = (int)peer_name.len;
       err =
           getpeername(sock, (struct sockaddr *)peer_name.addr, &peer_name_len);
-      peer_name.len = peer_name_len;
+      peer_name.len = (size_t)peer_name_len;
       if (!err) {
         peer_name_string = grpc_sockaddr_to_uri(&peer_name);
       } else {
@@ -465,7 +464,7 @@ static grpc_error *add_socket_to_server(grpc_tcp_server *s, SOCKET sock,
   sp->new_socket = INVALID_SOCKET;
   sp->port = port;
   sp->port_index = port_index;
-  grpc_closure_init(&sp->on_accept, on_accept, sp);
+  grpc_closure_init(&sp->on_accept, on_accept, sp, grpc_schedule_on_exec_ctx);
   GPR_ASSERT(sp->socket);
   gpr_mu_unlock(&s->mu);
   *listener = sp;
@@ -497,7 +496,7 @@ grpc_error *grpc_tcp_server_add_port(grpc_tcp_server *s,
       if (0 == getsockname(sp->socket->socket,
                            (struct sockaddr *)sockname_temp.addr,
                            &sockname_temp_len)) {
-        sockname_temp.len = sockname_temp_len;
+        sockname_temp.len = (size_t)sockname_temp_len;
         *port = grpc_sockaddr_get_port(&sockname_temp);
         if (*port > 0) {
           allocated_addr = gpr_malloc(sizeof(grpc_resolved_address));
diff --git a/src/core/lib/iomgr/tcp_uv.c b/src/core/lib/iomgr/tcp_uv.c
index 6e2ad1dbe923594dd4a4b3cf96e6b7ed393510a2..3ddc79706be2c1035c318a67c7c1a6ba8ef35e94 100644
--- a/src/core/lib/iomgr/tcp_uv.c
+++ b/src/core/lib/iomgr/tcp_uv.c
@@ -169,7 +169,7 @@ static void read_callback(uv_stream_t *stream, ssize_t nread,
     // nread < 0: Error
     error = GRPC_ERROR_CREATE("TCP Read failed");
   }
-  grpc_exec_ctx_sched(&exec_ctx, cb, error, NULL);
+  grpc_closure_sched(&exec_ctx, cb, error);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
@@ -181,7 +181,7 @@ static void uv_endpoint_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   GPR_ASSERT(tcp->read_cb == NULL);
   tcp->read_cb = cb;
   tcp->read_slices = read_slices;
-  grpc_slice_buffer_reset_and_unref(read_slices);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, read_slices);
   TCP_REF(tcp, "read");
   // TODO(murgatroid99): figure out what the return value here means
   status =
@@ -190,7 +190,7 @@ static void uv_endpoint_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
     error = GRPC_ERROR_CREATE("TCP Read failed at start");
     error =
         grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status));
-    grpc_exec_ctx_sched(exec_ctx, cb, error, NULL);
+    grpc_closure_sched(exec_ctx, cb, error);
   }
   if (grpc_tcp_trace) {
     const char *str = grpc_error_string(error);
@@ -217,7 +217,7 @@ static void write_callback(uv_write_t *req, int status) {
   gpr_free(tcp->write_buffers);
   grpc_resource_user_free(&exec_ctx, tcp->resource_user,
                           sizeof(uv_buf_t) * tcp->write_slices->count);
-  grpc_exec_ctx_sched(&exec_ctx, cb, error, NULL);
+  grpc_closure_sched(&exec_ctx, cb, error);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
@@ -243,8 +243,8 @@ static void uv_endpoint_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   }
 
   if (tcp->shutting_down) {
-    grpc_exec_ctx_sched(exec_ctx, cb,
-                        GRPC_ERROR_CREATE("TCP socket is shutting down"), NULL);
+    grpc_closure_sched(exec_ctx, cb,
+                       GRPC_ERROR_CREATE("TCP socket is shutting down"));
     return;
   }
 
@@ -254,7 +254,7 @@ static void uv_endpoint_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   if (tcp->write_slices->count == 0) {
     // No slices means we don't have to do anything,
     // and libuv doesn't like empty writes
-    grpc_exec_ctx_sched(exec_ctx, cb, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, cb, GRPC_ERROR_NONE);
     return;
   }
 
diff --git a/src/core/lib/iomgr/tcp_windows.c b/src/core/lib/iomgr/tcp_windows.c
index d4613b674e53870c924fd66bedf9a50112a75eec..84f791ba07af7abf0851d0515addf8624d7e2c7c 100644
--- a/src/core/lib/iomgr/tcp_windows.c
+++ b/src/core/lib/iomgr/tcp_windows.c
@@ -53,6 +53,7 @@
 #include "src/core/lib/iomgr/socket_windows.h"
 #include "src/core/lib/iomgr/tcp_client.h"
 #include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_internal.h"
 
 #if defined(__MSYS__) && defined(GPR_ARCH_64)
 /* Nasty workaround for nasty bug when using the 64 bits msys compiler
@@ -174,13 +175,13 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *tcpp, grpc_error *error) {
       char *utf8_message = gpr_format_message(info->wsa_error);
       error = GRPC_ERROR_CREATE(utf8_message);
       gpr_free(utf8_message);
-      grpc_slice_unref(tcp->read_slice);
+      grpc_slice_unref_internal(exec_ctx, tcp->read_slice);
     } else {
       if (info->bytes_transfered != 0 && !tcp->shutting_down) {
         sub = grpc_slice_sub_no_ref(tcp->read_slice, 0, info->bytes_transfered);
         grpc_slice_buffer_add(tcp->read_slices, sub);
       } else {
-        grpc_slice_unref(tcp->read_slice);
+        grpc_slice_unref_internal(exec_ctx, tcp->read_slice);
         error = GRPC_ERROR_CREATE("End of TCP stream");
       }
     }
@@ -188,7 +189,7 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *tcpp, grpc_error *error) {
 
   tcp->read_cb = NULL;
   TCP_UNREF(exec_ctx, tcp, "read");
-  grpc_exec_ctx_sched(exec_ctx, cb, error, NULL);
+  grpc_closure_sched(exec_ctx, cb, error);
 }
 
 static void win_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
@@ -202,14 +203,14 @@ static void win_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   WSABUF buffer;
 
   if (tcp->shutting_down) {
-    grpc_exec_ctx_sched(exec_ctx, cb,
-                        GRPC_ERROR_CREATE("TCP socket is shutting down"), NULL);
+    grpc_closure_sched(exec_ctx, cb,
+                       GRPC_ERROR_CREATE("TCP socket is shutting down"));
     return;
   }
 
   tcp->read_cb = cb;
   tcp->read_slices = read_slices;
-  grpc_slice_buffer_reset_and_unref(read_slices);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, read_slices);
 
   tcp->read_slice = grpc_slice_malloc(8192);
 
@@ -227,7 +228,7 @@ static void win_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   /* Did we get data immediately ? Yay. */
   if (info->wsa_error != WSAEWOULDBLOCK) {
     info->bytes_transfered = bytes_read;
-    grpc_exec_ctx_sched(exec_ctx, &tcp->on_read, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, &tcp->on_read, GRPC_ERROR_NONE);
     return;
   }
 
@@ -240,8 +241,8 @@ static void win_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
     int wsa_error = WSAGetLastError();
     if (wsa_error != WSA_IO_PENDING) {
       info->wsa_error = wsa_error;
-      grpc_exec_ctx_sched(exec_ctx, &tcp->on_read,
-                          GRPC_WSA_ERROR(info->wsa_error, "WSARecv"), NULL);
+      grpc_closure_sched(exec_ctx, &tcp->on_read,
+                         GRPC_WSA_ERROR(info->wsa_error, "WSARecv"));
       return;
     }
   }
@@ -272,7 +273,7 @@ static void on_write(grpc_exec_ctx *exec_ctx, void *tcpp, grpc_error *error) {
   }
 
   TCP_UNREF(exec_ctx, tcp, "write");
-  grpc_exec_ctx_sched(exec_ctx, cb, error, NULL);
+  grpc_closure_sched(exec_ctx, cb, error);
 }
 
 /* Initiates a write. */
@@ -290,8 +291,8 @@ static void win_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   size_t len;
 
   if (tcp->shutting_down) {
-    grpc_exec_ctx_sched(exec_ctx, cb,
-                        GRPC_ERROR_CREATE("TCP socket is shutting down"), NULL);
+    grpc_closure_sched(exec_ctx, cb,
+                       GRPC_ERROR_CREATE("TCP socket is shutting down"));
     return;
   }
 
@@ -322,7 +323,7 @@ static void win_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
     grpc_error *error = status == 0
                             ? GRPC_ERROR_NONE
                             : GRPC_WSA_ERROR(info->wsa_error, "WSASend");
-    grpc_exec_ctx_sched(exec_ctx, cb, error, NULL);
+    grpc_closure_sched(exec_ctx, cb, error);
     if (allocated) gpr_free(allocated);
     return;
   }
@@ -340,8 +341,7 @@ static void win_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
     int wsa_error = WSAGetLastError();
     if (wsa_error != WSA_IO_PENDING) {
       TCP_UNREF(exec_ctx, tcp, "write");
-      grpc_exec_ctx_sched(exec_ctx, cb, GRPC_WSA_ERROR(wsa_error, "WSASend"),
-                          NULL);
+      grpc_closure_sched(exec_ctx, cb, GRPC_WSA_ERROR(wsa_error, "WSASend"));
       return;
     }
   }
@@ -424,8 +424,8 @@ grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket,
   tcp->socket = socket;
   gpr_mu_init(&tcp->mu);
   gpr_ref_init(&tcp->refcount, 1);
-  grpc_closure_init(&tcp->on_read, on_read, tcp);
-  grpc_closure_init(&tcp->on_write, on_write, tcp);
+  grpc_closure_init(&tcp->on_read, on_read, tcp, grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&tcp->on_write, on_write, tcp, grpc_schedule_on_exec_ctx);
   tcp->peer_string = gpr_strdup(peer_string);
   tcp->resource_user = grpc_resource_user_create(resource_quota, peer_string);
   /* Tell network status tracking code about the new endpoint */
diff --git a/src/core/lib/iomgr/timer.h b/src/core/lib/iomgr/timer.h
index 20fe98c4a7d6588f8b187e8d28cc7ae44e67604f..d84a278b183d2c2dc95af3faa7ab053e84c661ca 100644
--- a/src/core/lib/iomgr/timer.h
+++ b/src/core/lib/iomgr/timer.h
@@ -49,15 +49,15 @@
 
 typedef struct grpc_timer grpc_timer;
 
-/* Initialize *timer. When expired or canceled, timer_cb will be called with
-   *timer_cb_arg and error set to indicate if it expired (GRPC_ERROR_NONE) or
-   was canceled (GRPC_ERROR_CANCELLED). timer_cb is guaranteed to be called
-   exactly once, and application code should check the error to determine
-   how it was invoked. The application callback is also responsible for
-   maintaining information about when to free up any user-level state. */
+/* Initialize *timer. When expired or canceled, closure will be called with
+   error set to indicate if it expired (GRPC_ERROR_NONE) or was canceled
+   (GRPC_ERROR_CANCELLED). timer_cb is guaranteed to be called exactly once, and
+   application code should check the error to determine how it was invoked. The
+   application callback is also responsible for maintaining information about
+   when to free up any user-level state. */
 void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
-                     gpr_timespec deadline, grpc_iomgr_cb_func timer_cb,
-                     void *timer_cb_arg, gpr_timespec now);
+                     gpr_timespec deadline, grpc_closure *closure,
+                     gpr_timespec now);
 
 /* Note that there is no timer destroy function. This is because the
    timer is a one-time occurrence with a guarantee that the callback will
diff --git a/src/core/lib/iomgr/timer_generic.c b/src/core/lib/iomgr/timer_generic.c
index 00058f9d86bdbac941f818d99f777ab084771afc..40c83514724c61daef6521ee66540891236bb151 100644
--- a/src/core/lib/iomgr/timer_generic.c
+++ b/src/core/lib/iomgr/timer_generic.c
@@ -178,28 +178,27 @@ static void note_deadline_change(shard_type *shard) {
 }
 
 void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
-                     gpr_timespec deadline, grpc_iomgr_cb_func timer_cb,
-                     void *timer_cb_arg, gpr_timespec now) {
+                     gpr_timespec deadline, grpc_closure *closure,
+                     gpr_timespec now) {
   int is_first_timer = 0;
   shard_type *shard = &g_shards[shard_idx(timer)];
   GPR_ASSERT(deadline.clock_type == g_clock_type);
   GPR_ASSERT(now.clock_type == g_clock_type);
-  grpc_closure_init(&timer->closure, timer_cb, timer_cb_arg);
+  timer->closure = closure;
   timer->deadline = deadline;
   timer->triggered = 0;
 
   if (!g_initialized) {
     timer->triggered = 1;
-    grpc_exec_ctx_sched(
-        exec_ctx, &timer->closure,
-        GRPC_ERROR_CREATE("Attempt to create timer before initialization"),
-        NULL);
+    grpc_closure_sched(
+        exec_ctx, timer->closure,
+        GRPC_ERROR_CREATE("Attempt to create timer before initialization"));
     return;
   }
 
   if (gpr_time_cmp(deadline, now) <= 0) {
     timer->triggered = 1;
-    grpc_exec_ctx_sched(exec_ctx, &timer->closure, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, timer->closure, GRPC_ERROR_NONE);
     return;
   }
 
@@ -251,7 +250,7 @@ void grpc_timer_cancel(grpc_exec_ctx *exec_ctx, grpc_timer *timer) {
   shard_type *shard = &g_shards[shard_idx(timer)];
   gpr_mu_lock(&shard->mu);
   if (!timer->triggered) {
-    grpc_exec_ctx_sched(exec_ctx, &timer->closure, GRPC_ERROR_CANCELLED, NULL);
+    grpc_closure_sched(exec_ctx, timer->closure, GRPC_ERROR_CANCELLED);
     timer->triggered = 1;
     if (timer->heap_index == INVALID_HEAP_INDEX) {
       list_remove(timer);
@@ -317,7 +316,7 @@ static size_t pop_timers(grpc_exec_ctx *exec_ctx, shard_type *shard,
   grpc_timer *timer;
   gpr_mu_lock(&shard->mu);
   while ((timer = pop_one(shard, now))) {
-    grpc_exec_ctx_sched(exec_ctx, &timer->closure, GRPC_ERROR_REF(error), NULL);
+    grpc_closure_sched(exec_ctx, timer->closure, GRPC_ERROR_REF(error));
     n++;
   }
   *new_min_deadline = compute_min_deadline(shard);
diff --git a/src/core/lib/iomgr/timer_generic.h b/src/core/lib/iomgr/timer_generic.h
index e4494adb5fe18941e313a9b20881217934a89590..9d901c7e68ff96a272f7d723f052926336cc7663 100644
--- a/src/core/lib/iomgr/timer_generic.h
+++ b/src/core/lib/iomgr/timer_generic.h
@@ -43,7 +43,7 @@ struct grpc_timer {
   int triggered;
   struct grpc_timer *next;
   struct grpc_timer *prev;
-  grpc_closure closure;
+  grpc_closure *closure;
 };
 
 #endif /* GRPC_CORE_LIB_IOMGR_TIMER_GENERIC_H */
diff --git a/src/core/lib/iomgr/timer_uv.c b/src/core/lib/iomgr/timer_uv.c
index cfcb89268b1f644d55a26a718d119bc061e69f6d..fa2cdee9646afae7af224baa769e5665c6cf0a13 100644
--- a/src/core/lib/iomgr/timer_uv.c
+++ b/src/core/lib/iomgr/timer_uv.c
@@ -55,20 +55,20 @@ void run_expired_timer(uv_timer_t *handle) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   GPR_ASSERT(!timer->triggered);
   timer->triggered = 1;
-  grpc_exec_ctx_sched(&exec_ctx, &timer->closure, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(&exec_ctx, timer->closure, GRPC_ERROR_NONE);
   stop_uv_timer(handle);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
 void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
-                     gpr_timespec deadline, grpc_iomgr_cb_func timer_cb,
-                     void *timer_cb_arg, gpr_timespec now) {
+                     gpr_timespec deadline, grpc_closure *closure,
+                     gpr_timespec now) {
   uint64_t timeout;
   uv_timer_t *uv_timer;
-  grpc_closure_init(&timer->closure, timer_cb, timer_cb_arg);
+  timer->closure = closure;
   if (gpr_time_cmp(deadline, now) <= 0) {
     timer->triggered = 1;
-    grpc_exec_ctx_sched(exec_ctx, &timer->closure, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, timer->closure, GRPC_ERROR_NONE);
     return;
   }
   timer->triggered = 0;
@@ -83,7 +83,7 @@ void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
 void grpc_timer_cancel(grpc_exec_ctx *exec_ctx, grpc_timer *timer) {
   if (!timer->triggered) {
     timer->triggered = 1;
-    grpc_exec_ctx_sched(exec_ctx, &timer->closure, GRPC_ERROR_CANCELLED, NULL);
+    grpc_closure_sched(exec_ctx, timer->closure, GRPC_ERROR_CANCELLED);
     stop_uv_timer((uv_timer_t *)timer->uv_timer);
   }
 }
diff --git a/src/core/lib/iomgr/timer_uv.h b/src/core/lib/iomgr/timer_uv.h
index 3de383ebd5010e79c2f74c28828b8f8d730966f2..13cf8bd4fa0f593876a314f4920711013d712970 100644
--- a/src/core/lib/iomgr/timer_uv.h
+++ b/src/core/lib/iomgr/timer_uv.h
@@ -37,7 +37,7 @@
 #include "src/core/lib/iomgr/exec_ctx.h"
 
 struct grpc_timer {
-  grpc_closure closure;
+  grpc_closure *closure;
   /* This is actually a uv_timer_t*, but we want to keep platform-specific
      types out of headers */
   void *uv_timer;
diff --git a/src/core/lib/iomgr/udp_server.c b/src/core/lib/iomgr/udp_server.c
index 3c24ea9afab9a3e50b44098e02decf53df5ddb48..dfbd295c914df62753be1474018edea0b7e9cf36 100644
--- a/src/core/lib/iomgr/udp_server.c
+++ b/src/core/lib/iomgr/udp_server.c
@@ -126,7 +126,7 @@ grpc_udp_server *grpc_udp_server_create(void) {
 
 static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_udp_server *s) {
   if (s->shutdown_complete != NULL) {
-    grpc_exec_ctx_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE);
   }
 
   gpr_mu_destroy(&s->mu);
@@ -170,8 +170,8 @@ static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_udp_server *s) {
     for (sp = s->head; sp; sp = sp->next) {
       grpc_unlink_if_unix_domain_socket(&sp->addr);
 
-      sp->destroyed_closure.cb = destroyed_port;
-      sp->destroyed_closure.cb_arg = s;
+      grpc_closure_init(&sp->destroyed_closure, destroyed_port, s,
+                        grpc_schedule_on_exec_ctx);
 
       /* Call the orphan_cb to signal that the FD is about to be closed and
        * should no longer be used. */
@@ -446,8 +446,8 @@ void grpc_udp_server_start(grpc_exec_ctx *exec_ctx, grpc_udp_server *s,
     for (i = 0; i < pollset_count; i++) {
       grpc_pollset_add_fd(exec_ctx, pollsets[i], sp->emfd);
     }
-    sp->read_closure.cb = on_read;
-    sp->read_closure.cb_arg = sp;
+    grpc_closure_init(&sp->read_closure, on_read, sp,
+                      grpc_schedule_on_exec_ctx);
     grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure);
 
     s->active_ports++;
diff --git a/src/core/lib/iomgr/workqueue.h b/src/core/lib/iomgr/workqueue.h
index 73d984984303b322cd57592bb488eacebf15eb9d..371b0f55dcae0e941a90e1bff562cfafa5831ade 100644
--- a/src/core/lib/iomgr/workqueue.h
+++ b/src/core/lib/iomgr/workqueue.h
@@ -72,17 +72,16 @@ grpc_workqueue *grpc_workqueue_ref(grpc_workqueue *workqueue);
 void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue);
 #endif
 
-/** Add a work item to a workqueue. Items added to a work queue will be started
-    in approximately the order they were enqueued, on some thread that may or
-    may not be the current thread. Successive closures enqueued onto a workqueue
-    MAY be executed concurrently.
+/** Fetch the workqueue closure scheduler. Items added to a work queue will be
+    started in approximately the order they were enqueued, on some thread that
+    may or may not be the current thread. Successive closures enqueued onto a
+    workqueue MAY be executed concurrently.
 
     It is generally more expensive to add a closure to a workqueue than to the
     execution context, both in terms of CPU work and in execution latency.
 
     Use work queues when it's important that other threads be given a chance to
     tackle some workload. */
-void grpc_workqueue_enqueue(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue,
-                            grpc_closure *closure, grpc_error *error);
+grpc_closure_scheduler *grpc_workqueue_scheduler(grpc_workqueue *workqueue);
 
 #endif /* GRPC_CORE_LIB_IOMGR_WORKQUEUE_H */
diff --git a/src/core/lib/iomgr/workqueue_uv.c b/src/core/lib/iomgr/workqueue_uv.c
index e58ca476ccc08e7670f9b39e61f10061dbfe5530..4d61b409124d4f923450f10f343d9ce7d5bcc13f 100644
--- a/src/core/lib/iomgr/workqueue_uv.c
+++ b/src/core/lib/iomgr/workqueue_uv.c
@@ -58,9 +58,8 @@ grpc_workqueue *grpc_workqueue_ref(grpc_workqueue *workqueue) {
 void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) {}
 #endif
 
-void grpc_workqueue_enqueue(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue,
-                            grpc_closure *closure, grpc_error *error) {
-  grpc_exec_ctx_sched(exec_ctx, closure, error, NULL);
+grpc_closure_scheduler *grpc_workqueue_scheduler(grpc_workqueue *workqueue) {
+  return grpc_schedule_on_exec_ctx;
 }
 
 #endif /* GPR_UV */
diff --git a/src/core/lib/iomgr/workqueue_windows.c b/src/core/lib/iomgr/workqueue_windows.c
index 5c93d3c59e265b11e1801a8bbe198566ec0a70e6..234b47cdf54c5ca7a8918e9e98ead5bfcdc73219 100644
--- a/src/core/lib/iomgr/workqueue_windows.c
+++ b/src/core/lib/iomgr/workqueue_windows.c
@@ -56,9 +56,8 @@ grpc_workqueue *grpc_workqueue_ref(grpc_workqueue *workqueue) {
 void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) {}
 #endif
 
-void grpc_workqueue_enqueue(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue,
-                            grpc_closure *closure, grpc_error *error) {
-  grpc_exec_ctx_sched(exec_ctx, closure, error, NULL);
+grpc_closure_scheduler *grpc_workqueue_scheduler(grpc_workqueue *workqueue) {
+  return grpc_schedule_on_exec_ctx;
 }
 
 #endif /* GPR_WINDOWS */
diff --git a/src/core/lib/security/context/security_context.c b/src/core/lib/security/context/security_context.c
index 2204fadf54cf495766027c0613cfd3512598cee9..fe82fabc31a408a41c42f8f9ada555506fa4e367 100644
--- a/src/core/lib/security/context/security_context.c
+++ b/src/core/lib/security/context/security_context.c
@@ -47,6 +47,7 @@
 
 grpc_call_error grpc_call_set_credentials(grpc_call *call,
                                           grpc_call_credentials *creds) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_client_security_context *ctx = NULL;
   GRPC_API_TRACE("grpc_call_set_credentials(call=%p, creds=%p)", 2,
                  (call, creds));
@@ -62,9 +63,10 @@ grpc_call_error grpc_call_set_credentials(grpc_call *call,
     grpc_call_context_set(call, GRPC_CONTEXT_SECURITY, ctx,
                           grpc_client_security_context_destroy);
   } else {
-    grpc_call_credentials_unref(ctx->creds);
+    grpc_call_credentials_unref(&exec_ctx, ctx->creds);
     ctx->creds = grpc_call_credentials_ref(creds);
   }
+  grpc_exec_ctx_finish(&exec_ctx);
   return GRPC_CALL_OK;
 }
 
@@ -96,13 +98,15 @@ grpc_client_security_context *grpc_client_security_context_create(void) {
 }
 
 void grpc_client_security_context_destroy(void *ctx) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_client_security_context *c = (grpc_client_security_context *)ctx;
-  grpc_call_credentials_unref(c->creds);
+  grpc_call_credentials_unref(&exec_ctx, c->creds);
   GRPC_AUTH_CONTEXT_UNREF(c->auth_context, "client_security_context");
   if (c->extension.instance != NULL && c->extension.destroy != NULL) {
     c->extension.destroy(c->extension.instance);
   }
   gpr_free(ctx);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /* --- grpc_server_security_context --- */
@@ -307,7 +311,7 @@ void grpc_auth_property_reset(grpc_auth_property *property) {
   memset(property, 0, sizeof(grpc_auth_property));
 }
 
-static void auth_context_pointer_arg_destroy(void *p) {
+static void auth_context_pointer_arg_destroy(grpc_exec_ctx *exec_ctx, void *p) {
   GRPC_AUTH_CONTEXT_UNREF(p, "auth_context_pointer_arg");
 }
 
diff --git a/src/core/lib/security/credentials/composite/composite_credentials.c b/src/core/lib/security/credentials/composite/composite_credentials.c
index d55d00b7b6638c25fff68cd406c3c56aa0312382..be1588dd8b9cf82d560d9b505a1a468760fb73e5 100644
--- a/src/core/lib/security/credentials/composite/composite_credentials.c
+++ b/src/core/lib/security/credentials/composite/composite_credentials.c
@@ -54,18 +54,20 @@ typedef struct {
   grpc_credentials_metadata_cb cb;
 } grpc_composite_call_credentials_metadata_context;
 
-static void composite_call_destruct(grpc_call_credentials *creds) {
+static void composite_call_destruct(grpc_exec_ctx *exec_ctx,
+                                    grpc_call_credentials *creds) {
   grpc_composite_call_credentials *c = (grpc_composite_call_credentials *)creds;
   size_t i;
   for (i = 0; i < c->inner.num_creds; i++) {
-    grpc_call_credentials_unref(c->inner.creds_array[i]);
+    grpc_call_credentials_unref(exec_ctx, c->inner.creds_array[i]);
   }
   gpr_free(c->inner.creds_array);
 }
 
 static void composite_call_md_context_destroy(
+    grpc_exec_ctx *exec_ctx,
     grpc_composite_call_credentials_metadata_context *ctx) {
-  grpc_credentials_md_store_unref(ctx->md_elems);
+  grpc_credentials_md_store_unref(exec_ctx, ctx->md_elems);
   gpr_free(ctx);
 }
 
@@ -103,7 +105,7 @@ static void composite_call_metadata_cb(grpc_exec_ctx *exec_ctx, void *user_data,
   /* We're done!. */
   ctx->cb(exec_ctx, ctx->user_data, ctx->md_elems->entries,
           ctx->md_elems->num_entries, GRPC_CREDENTIALS_OK, NULL);
-  composite_call_md_context_destroy(ctx);
+  composite_call_md_context_destroy(exec_ctx, ctx);
 }
 
 static void composite_call_get_request_metadata(
@@ -209,17 +211,19 @@ grpc_call_credentials *grpc_credentials_contains_type(
 
 /* -- Composite channel credentials. -- */
 
-static void composite_channel_destruct(grpc_channel_credentials *creds) {
+static void composite_channel_destruct(grpc_exec_ctx *exec_ctx,
+                                       grpc_channel_credentials *creds) {
   grpc_composite_channel_credentials *c =
       (grpc_composite_channel_credentials *)creds;
-  grpc_channel_credentials_unref(c->inner_creds);
-  grpc_call_credentials_unref(c->call_creds);
+  grpc_channel_credentials_unref(exec_ctx, c->inner_creds);
+  grpc_call_credentials_unref(exec_ctx, c->call_creds);
 }
 
 static grpc_security_status composite_channel_create_security_connector(
-    grpc_channel_credentials *creds, grpc_call_credentials *call_creds,
-    const char *target, const grpc_channel_args *args,
-    grpc_channel_security_connector **sc, grpc_channel_args **new_args) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_credentials *creds,
+    grpc_call_credentials *call_creds, const char *target,
+    const grpc_channel_args *args, grpc_channel_security_connector **sc,
+    grpc_channel_args **new_args) {
   grpc_composite_channel_credentials *c =
       (grpc_composite_channel_credentials *)creds;
   grpc_security_status status = GRPC_SECURITY_ERROR;
@@ -233,11 +237,12 @@ static grpc_security_status composite_channel_create_security_connector(
     grpc_call_credentials *composite_call_creds =
         grpc_composite_call_credentials_create(c->call_creds, call_creds, NULL);
     status = c->inner_creds->vtable->create_security_connector(
-        c->inner_creds, composite_call_creds, target, args, sc, new_args);
-    grpc_call_credentials_unref(composite_call_creds);
+        exec_ctx, c->inner_creds, composite_call_creds, target, args, sc,
+        new_args);
+    grpc_call_credentials_unref(exec_ctx, composite_call_creds);
   } else {
     status = c->inner_creds->vtable->create_security_connector(
-        c->inner_creds, c->call_creds, target, args, sc, new_args);
+        exec_ctx, c->inner_creds, c->call_creds, target, args, sc, new_args);
   }
   return status;
 }
diff --git a/src/core/lib/security/credentials/credentials.c b/src/core/lib/security/credentials/credentials.c
index 1149e5c2edb012b81205ce271a1115196c7775c0..9781a22a86d5606de98d189b833afd37f7bb1975 100644
--- a/src/core/lib/security/credentials/credentials.c
+++ b/src/core/lib/security/credentials/credentials.c
@@ -66,8 +66,8 @@ grpc_credentials_metadata_request *grpc_credentials_metadata_request_create(
 }
 
 void grpc_credentials_metadata_request_destroy(
-    grpc_credentials_metadata_request *r) {
-  grpc_call_credentials_unref(r->creds);
+    grpc_exec_ctx *exec_ctx, grpc_credentials_metadata_request *r) {
+  grpc_call_credentials_unref(exec_ctx, r->creds);
   grpc_http_response_destroy(&r->response);
   gpr_free(r);
 }
@@ -79,17 +79,22 @@ grpc_channel_credentials *grpc_channel_credentials_ref(
   return creds;
 }
 
-void grpc_channel_credentials_unref(grpc_channel_credentials *creds) {
+void grpc_channel_credentials_unref(grpc_exec_ctx *exec_ctx,
+                                    grpc_channel_credentials *creds) {
   if (creds == NULL) return;
   if (gpr_unref(&creds->refcount)) {
-    if (creds->vtable->destruct != NULL) creds->vtable->destruct(creds);
+    if (creds->vtable->destruct != NULL) {
+      creds->vtable->destruct(exec_ctx, creds);
+    }
     gpr_free(creds);
   }
 }
 
 void grpc_channel_credentials_release(grpc_channel_credentials *creds) {
   GRPC_API_TRACE("grpc_channel_credentials_release(creds=%p)", 1, (creds));
-  grpc_channel_credentials_unref(creds);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_channel_credentials_unref(&exec_ctx, creds);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 grpc_call_credentials *grpc_call_credentials_ref(grpc_call_credentials *creds) {
@@ -98,17 +103,22 @@ grpc_call_credentials *grpc_call_credentials_ref(grpc_call_credentials *creds) {
   return creds;
 }
 
-void grpc_call_credentials_unref(grpc_call_credentials *creds) {
+void grpc_call_credentials_unref(grpc_exec_ctx *exec_ctx,
+                                 grpc_call_credentials *creds) {
   if (creds == NULL) return;
   if (gpr_unref(&creds->refcount)) {
-    if (creds->vtable->destruct != NULL) creds->vtable->destruct(creds);
+    if (creds->vtable->destruct != NULL) {
+      creds->vtable->destruct(exec_ctx, creds);
+    }
     gpr_free(creds);
   }
 }
 
 void grpc_call_credentials_release(grpc_call_credentials *creds) {
   GRPC_API_TRACE("grpc_call_credentials_release(creds=%p)", 1, (creds));
-  grpc_call_credentials_unref(creds);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_call_credentials_unref(&exec_ctx, creds);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 void grpc_call_credentials_get_request_metadata(
@@ -126,16 +136,16 @@ void grpc_call_credentials_get_request_metadata(
 }
 
 grpc_security_status grpc_channel_credentials_create_security_connector(
-    grpc_channel_credentials *channel_creds, const char *target,
-    const grpc_channel_args *args, grpc_channel_security_connector **sc,
-    grpc_channel_args **new_args) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_credentials *channel_creds,
+    const char *target, const grpc_channel_args *args,
+    grpc_channel_security_connector **sc, grpc_channel_args **new_args) {
   *new_args = NULL;
   if (channel_creds == NULL) {
     return GRPC_SECURITY_ERROR;
   }
   GPR_ASSERT(channel_creds->vtable->create_security_connector != NULL);
   return channel_creds->vtable->create_security_connector(
-      channel_creds, NULL, target, args, sc, new_args);
+      exec_ctx, channel_creds, NULL, target, args, sc, new_args);
 }
 
 grpc_channel_credentials *
@@ -157,10 +167,13 @@ grpc_server_credentials *grpc_server_credentials_ref(
   return creds;
 }
 
-void grpc_server_credentials_unref(grpc_server_credentials *creds) {
+void grpc_server_credentials_unref(grpc_exec_ctx *exec_ctx,
+                                   grpc_server_credentials *creds) {
   if (creds == NULL) return;
   if (gpr_unref(&creds->refcount)) {
-    if (creds->vtable->destruct != NULL) creds->vtable->destruct(creds);
+    if (creds->vtable->destruct != NULL) {
+      creds->vtable->destruct(exec_ctx, creds);
+    }
     if (creds->processor.destroy != NULL && creds->processor.state != NULL) {
       creds->processor.destroy(creds->processor.state);
     }
@@ -170,16 +183,19 @@ void grpc_server_credentials_unref(grpc_server_credentials *creds) {
 
 void grpc_server_credentials_release(grpc_server_credentials *creds) {
   GRPC_API_TRACE("grpc_server_credentials_release(creds=%p)", 1, (creds));
-  grpc_server_credentials_unref(creds);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_server_credentials_unref(&exec_ctx, creds);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 grpc_security_status grpc_server_credentials_create_security_connector(
-    grpc_server_credentials *creds, grpc_server_security_connector **sc) {
+    grpc_exec_ctx *exec_ctx, grpc_server_credentials *creds,
+    grpc_server_security_connector **sc) {
   if (creds == NULL || creds->vtable->create_security_connector == NULL) {
     gpr_log(GPR_ERROR, "Server credentials cannot create security context.");
     return GRPC_SECURITY_ERROR;
   }
-  return creds->vtable->create_security_connector(creds, sc);
+  return creds->vtable->create_security_connector(exec_ctx, creds, sc);
 }
 
 void grpc_server_credentials_set_auth_metadata_processor(
@@ -196,8 +212,9 @@ void grpc_server_credentials_set_auth_metadata_processor(
   creds->processor = processor;
 }
 
-static void server_credentials_pointer_arg_destroy(void *p) {
-  grpc_server_credentials_unref(p);
+static void server_credentials_pointer_arg_destroy(grpc_exec_ctx *exec_ctx,
+                                                   void *p) {
+  grpc_server_credentials_unref(exec_ctx, p);
 }
 
 static void *server_credentials_pointer_arg_copy(void *p) {
diff --git a/src/core/lib/security/credentials/credentials.h b/src/core/lib/security/credentials/credentials.h
index 85b3bc53503e28b1d9dd5da93cb64a85a6e98450..3011df6b8a2aa93400819a1a6a436d9d290f3c3a 100644
--- a/src/core/lib/security/credentials/credentials.h
+++ b/src/core/lib/security/credentials/credentials.h
@@ -101,12 +101,13 @@ void grpc_override_well_known_credentials_path_getter(
 /* --- grpc_channel_credentials. --- */
 
 typedef struct {
-  void (*destruct)(grpc_channel_credentials *c);
+  void (*destruct)(grpc_exec_ctx *exec_ctx, grpc_channel_credentials *c);
 
   grpc_security_status (*create_security_connector)(
-      grpc_channel_credentials *c, grpc_call_credentials *call_creds,
-      const char *target, const grpc_channel_args *args,
-      grpc_channel_security_connector **sc, grpc_channel_args **new_args);
+      grpc_exec_ctx *exec_ctx, grpc_channel_credentials *c,
+      grpc_call_credentials *call_creds, const char *target,
+      const grpc_channel_args *args, grpc_channel_security_connector **sc,
+      grpc_channel_args **new_args);
 
   grpc_channel_credentials *(*duplicate_without_call_credentials)(
       grpc_channel_credentials *c);
@@ -120,16 +121,17 @@ struct grpc_channel_credentials {
 
 grpc_channel_credentials *grpc_channel_credentials_ref(
     grpc_channel_credentials *creds);
-void grpc_channel_credentials_unref(grpc_channel_credentials *creds);
+void grpc_channel_credentials_unref(grpc_exec_ctx *exec_ctx,
+                                    grpc_channel_credentials *creds);
 
 /* Creates a security connector for the channel. May also create new channel
    args for the channel to be used in place of the passed in const args if
    returned non NULL. In that case the caller is responsible for destroying
    new_args after channel creation. */
 grpc_security_status grpc_channel_credentials_create_security_connector(
-    grpc_channel_credentials *creds, const char *target,
-    const grpc_channel_args *args, grpc_channel_security_connector **sc,
-    grpc_channel_args **new_args);
+    grpc_exec_ctx *exec_ctx, grpc_channel_credentials *creds,
+    const char *target, const grpc_channel_args *args,
+    grpc_channel_security_connector **sc, grpc_channel_args **new_args);
 
 /* Creates a version of the channel credentials without any attached call
    credentials. This can be used in order to open a channel to a non-trusted
@@ -162,7 +164,8 @@ void grpc_credentials_md_store_add_cstrings(grpc_credentials_md_store *store,
                                             const char *key, const char *value);
 grpc_credentials_md_store *grpc_credentials_md_store_ref(
     grpc_credentials_md_store *store);
-void grpc_credentials_md_store_unref(grpc_credentials_md_store *store);
+void grpc_credentials_md_store_unref(grpc_exec_ctx *exec_ctx,
+                                     grpc_credentials_md_store *store);
 
 /* --- grpc_call_credentials. --- */
 
@@ -172,7 +175,7 @@ typedef void (*grpc_credentials_metadata_cb)(
     size_t num_md, grpc_credentials_status status, const char *error_details);
 
 typedef struct {
-  void (*destruct)(grpc_call_credentials *c);
+  void (*destruct)(grpc_exec_ctx *exec_ctx, grpc_call_credentials *c);
   void (*get_request_metadata)(grpc_exec_ctx *exec_ctx,
                                grpc_call_credentials *c,
                                grpc_polling_entity *pollent,
@@ -188,7 +191,8 @@ struct grpc_call_credentials {
 };
 
 grpc_call_credentials *grpc_call_credentials_ref(grpc_call_credentials *creds);
-void grpc_call_credentials_unref(grpc_call_credentials *creds);
+void grpc_call_credentials_unref(grpc_exec_ctx *exec_ctx,
+                                 grpc_call_credentials *creds);
 void grpc_call_credentials_get_request_metadata(
     grpc_exec_ctx *exec_ctx, grpc_call_credentials *creds,
     grpc_polling_entity *pollent, grpc_auth_metadata_context context,
@@ -202,9 +206,10 @@ grpc_call_credentials *grpc_md_only_test_credentials_create(
 /* --- grpc_server_credentials. --- */
 
 typedef struct {
-  void (*destruct)(grpc_server_credentials *c);
+  void (*destruct)(grpc_exec_ctx *exec_ctx, grpc_server_credentials *c);
   grpc_security_status (*create_security_connector)(
-      grpc_server_credentials *c, grpc_server_security_connector **sc);
+      grpc_exec_ctx *exec_ctx, grpc_server_credentials *c,
+      grpc_server_security_connector **sc);
 } grpc_server_credentials_vtable;
 
 struct grpc_server_credentials {
@@ -215,12 +220,14 @@ struct grpc_server_credentials {
 };
 
 grpc_security_status grpc_server_credentials_create_security_connector(
-    grpc_server_credentials *creds, grpc_server_security_connector **sc);
+    grpc_exec_ctx *exec_ctx, grpc_server_credentials *creds,
+    grpc_server_security_connector **sc);
 
 grpc_server_credentials *grpc_server_credentials_ref(
     grpc_server_credentials *creds);
 
-void grpc_server_credentials_unref(grpc_server_credentials *creds);
+void grpc_server_credentials_unref(grpc_exec_ctx *exec_ctx,
+                                   grpc_server_credentials *creds);
 
 #define GRPC_SERVER_CREDENTIALS_ARG "grpc.server_credentials"
 
@@ -243,6 +250,6 @@ grpc_credentials_metadata_request *grpc_credentials_metadata_request_create(
     void *user_data);
 
 void grpc_credentials_metadata_request_destroy(
-    grpc_credentials_metadata_request *r);
+    grpc_exec_ctx *exec_ctx, grpc_credentials_metadata_request *r);
 
 #endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_CREDENTIALS_H */
diff --git a/src/core/lib/security/credentials/credentials_metadata.c b/src/core/lib/security/credentials/credentials_metadata.c
index e6cb56773477438efe1a2eefb7d28e26c1ef393e..68da5fb4a8bde28f7fa701a3f2097a8c400f6f04 100644
--- a/src/core/lib/security/credentials/credentials_metadata.c
+++ b/src/core/lib/security/credentials/credentials_metadata.c
@@ -37,6 +37,8 @@
 
 #include <string.h>
 
+#include "src/core/lib/slice/slice_internal.h"
+
 static void store_ensure_capacity(grpc_credentials_md_store *store) {
   if (store->num_entries == store->allocated) {
     store->allocated = (store->allocated == 0) ? 1 : store->allocated * 2;
@@ -62,8 +64,8 @@ void grpc_credentials_md_store_add(grpc_credentials_md_store *store,
                                    grpc_slice key, grpc_slice value) {
   if (store == NULL) return;
   store_ensure_capacity(store);
-  store->entries[store->num_entries].key = grpc_slice_ref(key);
-  store->entries[store->num_entries].value = grpc_slice_ref(value);
+  store->entries[store->num_entries].key = grpc_slice_ref_internal(key);
+  store->entries[store->num_entries].value = grpc_slice_ref_internal(value);
   store->num_entries++;
 }
 
@@ -85,14 +87,15 @@ grpc_credentials_md_store *grpc_credentials_md_store_ref(
   return store;
 }
 
-void grpc_credentials_md_store_unref(grpc_credentials_md_store *store) {
+void grpc_credentials_md_store_unref(grpc_exec_ctx *exec_ctx,
+                                     grpc_credentials_md_store *store) {
   if (store == NULL) return;
   if (gpr_unref(&store->refcount)) {
     if (store->entries != NULL) {
       size_t i;
       for (i = 0; i < store->num_entries; i++) {
-        grpc_slice_unref(store->entries[i].key);
-        grpc_slice_unref(store->entries[i].value);
+        grpc_slice_unref_internal(exec_ctx, store->entries[i].key);
+        grpc_slice_unref_internal(exec_ctx, store->entries[i].value);
       }
       gpr_free(store->entries);
     }
diff --git a/src/core/lib/security/credentials/fake/fake_credentials.c b/src/core/lib/security/credentials/fake/fake_credentials.c
index ea4cb76fb99f3fa3e464865bedd7dc899c0cc133..a8679d097d0fb985d3262f873657d8c787b95421 100644
--- a/src/core/lib/security/credentials/fake/fake_credentials.c
+++ b/src/core/lib/security/credentials/fake/fake_credentials.c
@@ -45,16 +45,18 @@
 /* -- Fake transport security credentials. -- */
 
 static grpc_security_status fake_transport_security_create_security_connector(
-    grpc_channel_credentials *c, grpc_call_credentials *call_creds,
-    const char *target, const grpc_channel_args *args,
-    grpc_channel_security_connector **sc, grpc_channel_args **new_args) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_credentials *c,
+    grpc_call_credentials *call_creds, const char *target,
+    const grpc_channel_args *args, grpc_channel_security_connector **sc,
+    grpc_channel_args **new_args) {
   *sc = grpc_fake_channel_security_connector_create(call_creds);
   return GRPC_SECURITY_OK;
 }
 
 static grpc_security_status
 fake_transport_security_server_create_security_connector(
-    grpc_server_credentials *c, grpc_server_security_connector **sc) {
+    grpc_exec_ctx *exec_ctx, grpc_server_credentials *c,
+    grpc_server_security_connector **sc) {
   *sc = grpc_fake_server_security_connector_create();
   return GRPC_SECURITY_OK;
 }
@@ -89,9 +91,10 @@ grpc_server_credentials *grpc_fake_transport_security_server_credentials_create(
 
 /* -- Metadata-only test credentials. -- */
 
-static void md_only_test_destruct(grpc_call_credentials *creds) {
+static void md_only_test_destruct(grpc_exec_ctx *exec_ctx,
+                                  grpc_call_credentials *creds) {
   grpc_md_only_test_credentials *c = (grpc_md_only_test_credentials *)creds;
-  grpc_credentials_md_store_unref(c->md_store);
+  grpc_credentials_md_store_unref(exec_ctx, c->md_store);
 }
 
 static void on_simulated_token_fetch_done(grpc_exec_ctx *exec_ctx,
@@ -101,7 +104,7 @@ static void on_simulated_token_fetch_done(grpc_exec_ctx *exec_ctx,
   grpc_md_only_test_credentials *c = (grpc_md_only_test_credentials *)r->creds;
   r->cb(exec_ctx, r->user_data, c->md_store->entries, c->md_store->num_entries,
         GRPC_CREDENTIALS_OK, NULL);
-  grpc_credentials_metadata_request_destroy(r);
+  grpc_credentials_metadata_request_destroy(exec_ctx, r);
 }
 
 static void md_only_test_get_request_metadata(
@@ -113,9 +116,10 @@ static void md_only_test_get_request_metadata(
   if (c->is_async) {
     grpc_credentials_metadata_request *cb_arg =
         grpc_credentials_metadata_request_create(creds, cb, user_data);
-    grpc_executor_push(
-        grpc_closure_create(on_simulated_token_fetch_done, cb_arg),
-        GRPC_ERROR_NONE);
+    grpc_closure_sched(exec_ctx,
+                       grpc_closure_create(on_simulated_token_fetch_done,
+                                           cb_arg, grpc_executor_scheduler),
+                       GRPC_ERROR_NONE);
   } else {
     cb(exec_ctx, user_data, c->md_store->entries, 1, GRPC_CREDENTIALS_OK, NULL);
   }
diff --git a/src/core/lib/security/credentials/google_default/google_default_credentials.c b/src/core/lib/security/credentials/google_default/google_default_credentials.c
index afe0e3d357b24ce25429eed6aba07aec6fa36cdc..d6e1fe3dcfc378a83158eac464eea7a44e222e8a 100644
--- a/src/core/lib/security/credentials/google_default/google_default_credentials.c
+++ b/src/core/lib/security/credentials/google_default/google_default_credentials.c
@@ -45,6 +45,7 @@
 #include "src/core/lib/iomgr/polling_entity.h"
 #include "src/core/lib/security/credentials/jwt/jwt_credentials.h"
 #include "src/core/lib/security/credentials/oauth2/oauth2_credentials.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/env.h"
 #include "src/core/lib/support/string.h"
@@ -101,11 +102,10 @@ static void destroy_pollset(grpc_exec_ctx *exec_ctx, void *p, grpc_error *e) {
   grpc_pollset_destroy(p);
 }
 
-static int is_stack_running_on_compute_engine(void) {
+static int is_stack_running_on_compute_engine(grpc_exec_ctx *exec_ctx) {
   compute_engine_detector detector;
   grpc_httpcli_request request;
   grpc_httpcli_context context;
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_closure destroy_closure;
 
   /* The http call is local. If it takes more than one sec, it is for sure not
@@ -128,13 +128,14 @@ static int is_stack_running_on_compute_engine(void) {
   grpc_resource_quota *resource_quota =
       grpc_resource_quota_create("google_default_credentials");
   grpc_httpcli_get(
-      &exec_ctx, &context, &detector.pollent, resource_quota, &request,
+      exec_ctx, &context, &detector.pollent, resource_quota, &request,
       gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), max_detection_delay),
-      grpc_closure_create(on_compute_engine_detection_http_response, &detector),
+      grpc_closure_create(on_compute_engine_detection_http_response, &detector,
+                          grpc_schedule_on_exec_ctx),
       &detector.response);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
 
-  grpc_exec_ctx_flush(&exec_ctx);
+  grpc_exec_ctx_flush(exec_ctx);
 
   /* Block until we get the response. This is not ideal but this should only be
      called once for the lifetime of the process by the default credentials. */
@@ -143,7 +144,7 @@ static int is_stack_running_on_compute_engine(void) {
     grpc_pollset_worker *worker = NULL;
     if (!GRPC_LOG_IF_ERROR(
             "pollset_work",
-            grpc_pollset_work(&exec_ctx,
+            grpc_pollset_work(exec_ctx,
                               grpc_polling_entity_pollset(&detector.pollent),
                               &worker, gpr_now(GPR_CLOCK_MONOTONIC),
                               gpr_inf_future(GPR_CLOCK_MONOTONIC)))) {
@@ -155,12 +156,13 @@ static int is_stack_running_on_compute_engine(void) {
 
   grpc_httpcli_context_destroy(&context);
   grpc_closure_init(&destroy_closure, destroy_pollset,
-                    grpc_polling_entity_pollset(&detector.pollent));
-  grpc_pollset_shutdown(&exec_ctx,
+                    grpc_polling_entity_pollset(&detector.pollent),
+                    grpc_schedule_on_exec_ctx);
+  grpc_pollset_shutdown(exec_ctx,
                         grpc_polling_entity_pollset(&detector.pollent),
                         &destroy_closure);
-  grpc_exec_ctx_finish(&exec_ctx);
   g_polling_mu = NULL;
+  grpc_exec_ctx_flush(exec_ctx);
 
   gpr_free(grpc_polling_entity_pollset(&detector.pollent));
   grpc_http_response_destroy(&detector.response);
@@ -170,7 +172,7 @@ static int is_stack_running_on_compute_engine(void) {
 
 /* Takes ownership of creds_path if not NULL. */
 static grpc_error *create_default_creds_from_path(
-    char *creds_path, grpc_call_credentials **creds) {
+    grpc_exec_ctx *exec_ctx, char *creds_path, grpc_call_credentials **creds) {
   grpc_json *json = NULL;
   grpc_auth_json_key key;
   grpc_auth_refresh_token token;
@@ -200,7 +202,7 @@ static grpc_error *create_default_creds_from_path(
   if (grpc_auth_json_key_is_valid(&key)) {
     result =
         grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
-            key, grpc_max_auth_token_lifetime());
+            exec_ctx, key, grpc_max_auth_token_lifetime());
     if (result == NULL) {
       error = GRPC_ERROR_CREATE(
           "grpc_service_account_jwt_access_credentials_create_from_auth_json_"
@@ -225,7 +227,7 @@ static grpc_error *create_default_creds_from_path(
 end:
   GPR_ASSERT((result == NULL) + (error == GRPC_ERROR_NONE) == 1);
   if (creds_path != NULL) gpr_free(creds_path);
-  grpc_slice_unref(creds_data);
+  grpc_slice_unref_internal(exec_ctx, creds_data);
   if (json != NULL) grpc_json_destroy(json);
   *creds = result;
   return error;
@@ -236,6 +238,7 @@ grpc_channel_credentials *grpc_google_default_credentials_create(void) {
   grpc_call_credentials *call_creds = NULL;
   grpc_error *error = GRPC_ERROR_CREATE("Failed to create Google credentials");
   grpc_error *err;
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   GRPC_API_TRACE("grpc_google_default_credentials_create(void)", 0, ());
 
@@ -250,20 +253,22 @@ grpc_channel_credentials *grpc_google_default_credentials_create(void) {
 
   /* First, try the environment variable. */
   err = create_default_creds_from_path(
-      gpr_getenv(GRPC_GOOGLE_CREDENTIALS_ENV_VAR), &call_creds);
+      &exec_ctx, gpr_getenv(GRPC_GOOGLE_CREDENTIALS_ENV_VAR), &call_creds);
   if (err == GRPC_ERROR_NONE) goto end;
   error = grpc_error_add_child(error, err);
 
   /* Then the well-known file. */
   err = create_default_creds_from_path(
-      grpc_get_well_known_google_credentials_file_path(), &call_creds);
+      &exec_ctx, grpc_get_well_known_google_credentials_file_path(),
+      &call_creds);
   if (err == GRPC_ERROR_NONE) goto end;
   error = grpc_error_add_child(error, err);
 
   /* At last try to see if we're on compute engine (do the detection only once
      since it requires a network test). */
   if (!compute_engine_detection_done) {
-    int need_compute_engine_creds = is_stack_running_on_compute_engine();
+    int need_compute_engine_creds =
+        is_stack_running_on_compute_engine(&exec_ctx);
     compute_engine_detection_done = 1;
     if (need_compute_engine_creds) {
       call_creds = grpc_google_compute_engine_credentials_create(NULL);
@@ -286,8 +291,8 @@ end:
           grpc_composite_channel_credentials_create(ssl_creds, call_creds,
                                                     NULL));
       GPR_ASSERT(default_credentials != NULL);
-      grpc_channel_credentials_unref(ssl_creds);
-      grpc_call_credentials_unref(call_creds);
+      grpc_channel_credentials_unref(&exec_ctx, ssl_creds);
+      grpc_call_credentials_unref(&exec_ctx, call_creds);
       result = default_credentials;
     } else {
       gpr_log(GPR_ERROR, "Could not create google default credentials.");
@@ -299,18 +304,21 @@ end:
   } else {
     GRPC_ERROR_UNREF(error);
   }
+  grpc_exec_ctx_finish(&exec_ctx);
   return result;
 }
 
 void grpc_flush_cached_google_default_credentials(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   gpr_once_init(&g_once, init_default_credentials);
   gpr_mu_lock(&g_state_mu);
   if (default_credentials != NULL) {
-    grpc_channel_credentials_unref(default_credentials);
+    grpc_channel_credentials_unref(&exec_ctx, default_credentials);
     default_credentials = NULL;
   }
   compute_engine_detection_done = 0;
   gpr_mu_unlock(&g_state_mu);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /* -- Well known credentials path. -- */
diff --git a/src/core/lib/security/credentials/iam/iam_credentials.c b/src/core/lib/security/credentials/iam/iam_credentials.c
index 370a384d0e9127ab4a78bbd20bbce603995ce7cd..abd69a967038acbdd9e8354e3e08102e53a4e62f 100644
--- a/src/core/lib/security/credentials/iam/iam_credentials.c
+++ b/src/core/lib/security/credentials/iam/iam_credentials.c
@@ -42,9 +42,10 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 
-static void iam_destruct(grpc_call_credentials *creds) {
+static void iam_destruct(grpc_exec_ctx *exec_ctx,
+                         grpc_call_credentials *creds) {
   grpc_google_iam_credentials *c = (grpc_google_iam_credentials *)creds;
-  grpc_credentials_md_store_unref(c->iam_md);
+  grpc_credentials_md_store_unref(exec_ctx, c->iam_md);
 }
 
 static void iam_get_request_metadata(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/lib/security/credentials/jwt/jwt_credentials.c b/src/core/lib/security/credentials/jwt/jwt_credentials.c
index 3daf0f4ef704115898f317ac214754e0bce5ca3a..616be64a54b59610a69e9364c80d65c3d8c93077 100644
--- a/src/core/lib/security/credentials/jwt/jwt_credentials.c
+++ b/src/core/lib/security/credentials/jwt/jwt_credentials.c
@@ -42,9 +42,10 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 
-static void jwt_reset_cache(grpc_service_account_jwt_access_credentials *c) {
+static void jwt_reset_cache(grpc_exec_ctx *exec_ctx,
+                            grpc_service_account_jwt_access_credentials *c) {
   if (c->cached.jwt_md != NULL) {
-    grpc_credentials_md_store_unref(c->cached.jwt_md);
+    grpc_credentials_md_store_unref(exec_ctx, c->cached.jwt_md);
     c->cached.jwt_md = NULL;
   }
   if (c->cached.service_url != NULL) {
@@ -54,11 +55,12 @@ static void jwt_reset_cache(grpc_service_account_jwt_access_credentials *c) {
   c->cached.jwt_expiration = gpr_inf_past(GPR_CLOCK_REALTIME);
 }
 
-static void jwt_destruct(grpc_call_credentials *creds) {
+static void jwt_destruct(grpc_exec_ctx *exec_ctx,
+                         grpc_call_credentials *creds) {
   grpc_service_account_jwt_access_credentials *c =
       (grpc_service_account_jwt_access_credentials *)creds;
   grpc_auth_json_key_destruct(&c->key);
-  jwt_reset_cache(c);
+  jwt_reset_cache(exec_ctx, c);
   gpr_mu_destroy(&c->cache_mu);
 }
 
@@ -92,7 +94,7 @@ static void jwt_get_request_metadata(grpc_exec_ctx *exec_ctx,
     char *jwt = NULL;
     /* Generate a new jwt. */
     gpr_mu_lock(&c->cache_mu);
-    jwt_reset_cache(c);
+    jwt_reset_cache(exec_ctx, c);
     jwt = grpc_jwt_encode_and_sign(&c->key, context.service_url,
                                    c->jwt_lifetime, NULL);
     if (jwt != NULL) {
@@ -114,7 +116,7 @@ static void jwt_get_request_metadata(grpc_exec_ctx *exec_ctx,
   if (jwt_md != NULL) {
     cb(exec_ctx, user_data, jwt_md->entries, jwt_md->num_entries,
        GRPC_CREDENTIALS_OK, NULL);
-    grpc_credentials_md_store_unref(jwt_md);
+    grpc_credentials_md_store_unref(exec_ctx, jwt_md);
   } else {
     cb(exec_ctx, user_data, NULL, 0, GRPC_CREDENTIALS_ERROR,
        "Could not generate JWT.");
@@ -126,7 +128,8 @@ static grpc_call_credentials_vtable jwt_vtable = {jwt_destruct,
 
 grpc_call_credentials *
 grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
-    grpc_auth_json_key key, gpr_timespec token_lifetime) {
+    grpc_exec_ctx *exec_ctx, grpc_auth_json_key key,
+    gpr_timespec token_lifetime) {
   grpc_service_account_jwt_access_credentials *c;
   if (!grpc_auth_json_key_is_valid(&key)) {
     gpr_log(GPR_ERROR, "Invalid input for jwt credentials creation");
@@ -140,7 +143,7 @@ grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
   c->key = key;
   c->jwt_lifetime = token_lifetime;
   gpr_mu_init(&c->cache_mu);
-  jwt_reset_cache(c);
+  jwt_reset_cache(exec_ctx, c);
   return &c->base;
 }
 
@@ -183,6 +186,11 @@ grpc_call_credentials *grpc_service_account_jwt_access_credentials_create(
     gpr_free(clean_json);
   }
   GPR_ASSERT(reserved == NULL);
-  return grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
-      grpc_auth_json_key_create_from_string(json_key), token_lifetime);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_call_credentials *creds =
+      grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
+          &exec_ctx, grpc_auth_json_key_create_from_string(json_key),
+          token_lifetime);
+  grpc_exec_ctx_finish(&exec_ctx);
+  return creds;
 }
diff --git a/src/core/lib/security/credentials/jwt/jwt_credentials.h b/src/core/lib/security/credentials/jwt/jwt_credentials.h
index d5726061794dbf54bc8e31c4f306394cbc70dc12..39b7aeafe85464c6d00a46f5a235152598192fef 100644
--- a/src/core/lib/security/credentials/jwt/jwt_credentials.h
+++ b/src/core/lib/security/credentials/jwt/jwt_credentials.h
@@ -57,6 +57,7 @@ typedef struct {
 // Takes ownership of the key.
 grpc_call_credentials *
 grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
-    grpc_auth_json_key key, gpr_timespec token_lifetime);
+    grpc_exec_ctx *exec_ctx, grpc_auth_json_key key,
+    gpr_timespec token_lifetime);
 
 #endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_CREDENTIALS_H */
diff --git a/src/core/lib/security/credentials/jwt/jwt_verifier.c b/src/core/lib/security/credentials/jwt/jwt_verifier.c
index 42bd89dd0acd9e4c6d4a7dd2877a9e81989587e4..2270be8f4493d320daee8f15a4d2b06c77e964e9 100644
--- a/src/core/lib/security/credentials/jwt/jwt_verifier.c
+++ b/src/core/lib/security/credentials/jwt/jwt_verifier.c
@@ -36,11 +36,6 @@
 #include <limits.h>
 #include <string.h>
 
-#include "src/core/lib/http/httpcli.h"
-#include "src/core/lib/iomgr/polling_entity.h"
-#include "src/core/lib/security/util/b64.h"
-#include "src/core/lib/tsi/ssl_types.h"
-
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
@@ -48,6 +43,13 @@
 #include <grpc/support/useful.h>
 #include <openssl/pem.h>
 
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/security/util/b64.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/tsi/ssl_types.h"
+
 /* --- Utils. --- */
 
 const char *grpc_jwt_verifier_status_to_string(
@@ -84,11 +86,12 @@ static const EVP_MD *evp_md_from_alg(const char *alg) {
   }
 }
 
-static grpc_json *parse_json_part_from_jwt(const char *str, size_t len,
+static grpc_json *parse_json_part_from_jwt(grpc_exec_ctx *exec_ctx,
+                                           const char *str, size_t len,
                                            grpc_slice *buffer) {
   grpc_json *json;
 
-  *buffer = grpc_base64_decode_with_len(str, len, 1);
+  *buffer = grpc_base64_decode_with_len(exec_ctx, str, len, 1);
   if (GRPC_SLICE_IS_EMPTY(*buffer)) {
     gpr_log(GPR_ERROR, "Invalid base64.");
     return NULL;
@@ -96,7 +99,7 @@ static grpc_json *parse_json_part_from_jwt(const char *str, size_t len,
   json = grpc_json_parse_string_with_len((char *)GRPC_SLICE_START_PTR(*buffer),
                                          GRPC_SLICE_LENGTH(*buffer));
   if (json == NULL) {
-    grpc_slice_unref(*buffer);
+    grpc_slice_unref_internal(exec_ctx, *buffer);
     gpr_log(GPR_ERROR, "JSON parsing error.");
   }
   return json;
@@ -132,13 +135,14 @@ typedef struct {
   grpc_slice buffer;
 } jose_header;
 
-static void jose_header_destroy(jose_header *h) {
-  grpc_slice_unref(h->buffer);
+static void jose_header_destroy(grpc_exec_ctx *exec_ctx, jose_header *h) {
+  grpc_slice_unref_internal(exec_ctx, h->buffer);
   gpr_free(h);
 }
 
 /* Takes ownership of json and buffer. */
-static jose_header *jose_header_from_json(grpc_json *json, grpc_slice buffer) {
+static jose_header *jose_header_from_json(grpc_exec_ctx *exec_ctx,
+                                          grpc_json *json, grpc_slice buffer) {
   grpc_json *cur;
   jose_header *h = gpr_malloc(sizeof(jose_header));
   memset(h, 0, sizeof(jose_header));
@@ -173,7 +177,7 @@ static jose_header *jose_header_from_json(grpc_json *json, grpc_slice buffer) {
 
 error:
   grpc_json_destroy(json);
-  jose_header_destroy(h);
+  jose_header_destroy(exec_ctx, h);
   return NULL;
 }
 
@@ -193,9 +197,9 @@ struct grpc_jwt_claims {
   grpc_slice buffer;
 };
 
-void grpc_jwt_claims_destroy(grpc_jwt_claims *claims) {
+void grpc_jwt_claims_destroy(grpc_exec_ctx *exec_ctx, grpc_jwt_claims *claims) {
   grpc_json_destroy(claims->json);
-  grpc_slice_unref(claims->buffer);
+  grpc_slice_unref_internal(exec_ctx, claims->buffer);
   gpr_free(claims);
 }
 
@@ -240,7 +244,8 @@ gpr_timespec grpc_jwt_claims_not_before(const grpc_jwt_claims *claims) {
 }
 
 /* Takes ownership of json and buffer even in case of failure. */
-grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, grpc_slice buffer) {
+grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_exec_ctx *exec_ctx,
+                                           grpc_json *json, grpc_slice buffer) {
   grpc_json *cur;
   grpc_jwt_claims *claims = gpr_malloc(sizeof(grpc_jwt_claims));
   memset(claims, 0, sizeof(grpc_jwt_claims));
@@ -281,7 +286,7 @@ grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, grpc_slice buffer) {
   return claims;
 
 error:
-  grpc_jwt_claims_destroy(claims);
+  grpc_jwt_claims_destroy(exec_ctx, claims);
   return NULL;
 }
 
@@ -305,6 +310,17 @@ grpc_jwt_verifier_status grpc_jwt_claims_check(const grpc_jwt_claims *claims,
     return GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE;
   }
 
+  /* This should be probably up to the upper layer to decide but let's harcode
+     the 99% use case here for email issuers, where the JWT must be self
+     issued. */
+  if (grpc_jwt_issuer_email_domain(claims->iss) != NULL &&
+      claims->sub != NULL && strcmp(claims->iss, claims->sub) != 0) {
+    gpr_log(GPR_ERROR,
+            "Email issuer (%s) cannot assert another subject (%s) than itself.",
+            claims->iss, claims->sub);
+    return GRPC_JWT_VERIFIER_BAD_SUBJECT;
+  }
+
   if (audience == NULL) {
     audience_ok = claims->aud == NULL;
   } else {
@@ -362,12 +378,12 @@ static verifier_cb_ctx *verifier_cb_ctx_create(
   return ctx;
 }
 
-void verifier_cb_ctx_destroy(verifier_cb_ctx *ctx) {
+void verifier_cb_ctx_destroy(grpc_exec_ctx *exec_ctx, verifier_cb_ctx *ctx) {
   if (ctx->audience != NULL) gpr_free(ctx->audience);
-  if (ctx->claims != NULL) grpc_jwt_claims_destroy(ctx->claims);
-  grpc_slice_unref(ctx->signature);
-  grpc_slice_unref(ctx->signed_data);
-  jose_header_destroy(ctx->header);
+  if (ctx->claims != NULL) grpc_jwt_claims_destroy(exec_ctx, ctx->claims);
+  grpc_slice_unref_internal(exec_ctx, ctx->signature);
+  grpc_slice_unref_internal(exec_ctx, ctx->signed_data);
+  jose_header_destroy(exec_ctx, ctx->header);
   for (size_t i = 0; i < HTTP_RESPONSE_COUNT; i++) {
     grpc_http_response_destroy(&ctx->responses[i]);
   }
@@ -447,23 +463,24 @@ end:
   return result;
 }
 
-static BIGNUM *bignum_from_base64(const char *b64) {
+static BIGNUM *bignum_from_base64(grpc_exec_ctx *exec_ctx, const char *b64) {
   BIGNUM *result = NULL;
   grpc_slice bin;
 
   if (b64 == NULL) return NULL;
-  bin = grpc_base64_decode(b64, 1);
+  bin = grpc_base64_decode(exec_ctx, b64, 1);
   if (GRPC_SLICE_IS_EMPTY(bin)) {
     gpr_log(GPR_ERROR, "Invalid base64 for big num.");
     return NULL;
   }
   result = BN_bin2bn(GRPC_SLICE_START_PTR(bin),
                      TSI_SIZE_AS_SIZE(GRPC_SLICE_LENGTH(bin)), NULL);
-  grpc_slice_unref(bin);
+  grpc_slice_unref_internal(exec_ctx, bin);
   return result;
 }
 
-static EVP_PKEY *pkey_from_jwk(const grpc_json *json, const char *kty) {
+static EVP_PKEY *pkey_from_jwk(grpc_exec_ctx *exec_ctx, const grpc_json *json,
+                               const char *kty) {
   const grpc_json *key_prop;
   RSA *rsa = NULL;
   EVP_PKEY *result = NULL;
@@ -480,10 +497,12 @@ static EVP_PKEY *pkey_from_jwk(const grpc_json *json, const char *kty) {
   }
   for (key_prop = json->child; key_prop != NULL; key_prop = key_prop->next) {
     if (strcmp(key_prop->key, "n") == 0) {
-      rsa->n = bignum_from_base64(validate_string_field(key_prop, "n"));
+      rsa->n =
+          bignum_from_base64(exec_ctx, validate_string_field(key_prop, "n"));
       if (rsa->n == NULL) goto end;
     } else if (strcmp(key_prop->key, "e") == 0) {
-      rsa->e = bignum_from_base64(validate_string_field(key_prop, "e"));
+      rsa->e =
+          bignum_from_base64(exec_ctx, validate_string_field(key_prop, "e"));
       if (rsa->e == NULL) goto end;
     }
   }
@@ -499,7 +518,8 @@ end:
   return result;
 }
 
-static EVP_PKEY *find_verification_key(const grpc_json *json,
+static EVP_PKEY *find_verification_key(grpc_exec_ctx *exec_ctx,
+                                       const grpc_json *json,
                                        const char *header_alg,
                                        const char *header_kid) {
   const grpc_json *jkey;
@@ -543,7 +563,7 @@ static EVP_PKEY *find_verification_key(const grpc_json *json,
     }
     if (alg != NULL && kid != NULL && kty != NULL &&
         strcmp(kid, header_kid) == 0 && strcmp(alg, header_alg) == 0) {
-      return pkey_from_jwk(jkey, kty);
+      return pkey_from_jwk(exec_ctx, jkey, kty);
     }
   }
   gpr_log(GPR_ERROR,
@@ -597,7 +617,7 @@ static void on_keys_retrieved(grpc_exec_ctx *exec_ctx, void *user_data,
     goto end;
   }
   verification_key =
-      find_verification_key(json, ctx->header->alg, ctx->header->kid);
+      find_verification_key(exec_ctx, json, ctx->header->alg, ctx->header->kid);
   if (verification_key == NULL) {
     gpr_log(GPR_ERROR, "Could not find verification key with kid %s.",
             ctx->header->kid);
@@ -621,8 +641,8 @@ static void on_keys_retrieved(grpc_exec_ctx *exec_ctx, void *user_data,
 end:
   if (json != NULL) grpc_json_destroy(json);
   if (verification_key != NULL) EVP_PKEY_free(verification_key);
-  ctx->user_cb(ctx->user_data, status, claims);
-  verifier_cb_ctx_destroy(ctx);
+  ctx->user_cb(exec_ctx, ctx->user_data, status, claims);
+  verifier_cb_ctx_destroy(exec_ctx, ctx);
 }
 
 static void on_openid_config_retrieved(grpc_exec_ctx *exec_ctx, void *user_data,
@@ -665,17 +685,18 @@ static void on_openid_config_retrieved(grpc_exec_ctx *exec_ctx, void *user_data,
   grpc_httpcli_get(
       exec_ctx, &ctx->verifier->http_ctx, &ctx->pollent, resource_quota, &req,
       gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), grpc_jwt_verifier_max_delay),
-      grpc_closure_create(on_keys_retrieved, ctx),
+      grpc_closure_create(on_keys_retrieved, ctx, grpc_schedule_on_exec_ctx),
       &ctx->responses[HTTP_RESPONSE_KEYS]);
-  grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
   grpc_json_destroy(json);
   gpr_free(req.host);
   return;
 
 error:
   if (json != NULL) grpc_json_destroy(json);
-  ctx->user_cb(ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR, NULL);
-  verifier_cb_ctx_destroy(ctx);
+  ctx->user_cb(exec_ctx, ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR,
+               NULL);
+  verifier_cb_ctx_destroy(exec_ctx, ctx);
 }
 
 static email_key_mapping *verifier_get_mapping(grpc_jwt_verifier *v,
@@ -705,10 +726,26 @@ static void verifier_put_mapping(grpc_jwt_verifier *v, const char *email_domain,
   GPR_ASSERT(v->num_mappings <= v->allocated_mappings);
 }
 
+/* Very non-sophisticated way to detect an email address. Should be good
+   enough for now... */
+const char *grpc_jwt_issuer_email_domain(const char *issuer) {
+  const char *at_sign = strchr(issuer, '@');
+  if (at_sign == NULL) return NULL;
+  const char *email_domain = at_sign + 1;
+  if (*email_domain == '\0') return NULL;
+  const char *dot = strrchr(email_domain, '.');
+  if (dot == NULL || dot == email_domain) return email_domain;
+  GPR_ASSERT(dot > email_domain);
+  /* There may be a subdomain, we just want the domain. */
+  dot = gpr_memrchr(email_domain, '.', (size_t)(dot - email_domain));
+  if (dot == NULL) return email_domain;
+  return dot + 1;
+}
+
 /* Takes ownership of ctx. */
 static void retrieve_key_and_verify(grpc_exec_ctx *exec_ctx,
                                     verifier_cb_ctx *ctx) {
-  const char *at_sign;
+  const char *email_domain;
   grpc_closure *http_cb;
   char *path_prefix = NULL;
   const char *iss;
@@ -733,13 +770,9 @@ static void retrieve_key_and_verify(grpc_exec_ctx *exec_ctx,
      Nobody seems to implement the account/email/webfinger part 2. of the spec
      so we will rely instead on email/url mappings if we detect such an issuer.
      Part 4, on the other hand is implemented by both google and salesforce. */
-
-  /* Very non-sophisticated way to detect an email address. Should be good
-     enough for now... */
-  at_sign = strchr(iss, '@');
-  if (at_sign != NULL) {
+  email_domain = grpc_jwt_issuer_email_domain(iss);
+  if (email_domain != NULL) {
     email_key_mapping *mapping;
-    const char *email_domain = at_sign + 1;
     GPR_ASSERT(ctx->verifier != NULL);
     mapping = verifier_get_mapping(ctx->verifier, email_domain);
     if (mapping == NULL) {
@@ -754,7 +787,8 @@ static void retrieve_key_and_verify(grpc_exec_ctx *exec_ctx,
       *(path_prefix++) = '\0';
       gpr_asprintf(&req.http.path, "/%s/%s", path_prefix, iss);
     }
-    http_cb = grpc_closure_create(on_keys_retrieved, ctx);
+    http_cb =
+        grpc_closure_create(on_keys_retrieved, ctx, grpc_schedule_on_exec_ctx);
     rsp_idx = HTTP_RESPONSE_KEYS;
   } else {
     req.host = gpr_strdup(strstr(iss, "https://") == iss ? iss + 8 : iss);
@@ -766,7 +800,8 @@ static void retrieve_key_and_verify(grpc_exec_ctx *exec_ctx,
       gpr_asprintf(&req.http.path, "/%s%s", path_prefix,
                    GRPC_OPENID_CONFIG_URL_SUFFIX);
     }
-    http_cb = grpc_closure_create(on_openid_config_retrieved, ctx);
+    http_cb = grpc_closure_create(on_openid_config_retrieved, ctx,
+                                  grpc_schedule_on_exec_ctx);
     rsp_idx = HTTP_RESPONSE_OPENID;
   }
 
@@ -779,14 +814,15 @@ static void retrieve_key_and_verify(grpc_exec_ctx *exec_ctx,
       exec_ctx, &ctx->verifier->http_ctx, &ctx->pollent, resource_quota, &req,
       gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), grpc_jwt_verifier_max_delay),
       http_cb, &ctx->responses[rsp_idx]);
-  grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
   gpr_free(req.host);
   gpr_free(req.http.path);
   return;
 
 error:
-  ctx->user_cb(ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR, NULL);
-  verifier_cb_ctx_destroy(ctx);
+  ctx->user_cb(exec_ctx, ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR,
+               NULL);
+  verifier_cb_ctx_destroy(exec_ctx, ctx);
 }
 
 void grpc_jwt_verifier_verify(grpc_exec_ctx *exec_ctx,
@@ -808,22 +844,24 @@ void grpc_jwt_verifier_verify(grpc_exec_ctx *exec_ctx,
   GPR_ASSERT(verifier != NULL && jwt != NULL && audience != NULL && cb != NULL);
   dot = strchr(cur, '.');
   if (dot == NULL) goto error;
-  json = parse_json_part_from_jwt(cur, (size_t)(dot - cur), &header_buffer);
+  json = parse_json_part_from_jwt(exec_ctx, cur, (size_t)(dot - cur),
+                                  &header_buffer);
   if (json == NULL) goto error;
-  header = jose_header_from_json(json, header_buffer);
+  header = jose_header_from_json(exec_ctx, json, header_buffer);
   if (header == NULL) goto error;
 
   cur = dot + 1;
   dot = strchr(cur, '.');
   if (dot == NULL) goto error;
-  json = parse_json_part_from_jwt(cur, (size_t)(dot - cur), &claims_buffer);
+  json = parse_json_part_from_jwt(exec_ctx, cur, (size_t)(dot - cur),
+                                  &claims_buffer);
   if (json == NULL) goto error;
-  claims = grpc_jwt_claims_from_json(json, claims_buffer);
+  claims = grpc_jwt_claims_from_json(exec_ctx, json, claims_buffer);
   if (claims == NULL) goto error;
 
   signed_jwt_len = (size_t)(dot - jwt);
   cur = dot + 1;
-  signature = grpc_base64_decode(cur, 1);
+  signature = grpc_base64_decode(exec_ctx, cur, 1);
   if (GRPC_SLICE_IS_EMPTY(signature)) goto error;
   retrieve_key_and_verify(
       exec_ctx,
@@ -832,9 +870,9 @@ void grpc_jwt_verifier_verify(grpc_exec_ctx *exec_ctx,
   return;
 
 error:
-  if (header != NULL) jose_header_destroy(header);
-  if (claims != NULL) grpc_jwt_claims_destroy(claims);
-  cb(user_data, GRPC_JWT_VERIFIER_BAD_FORMAT, NULL);
+  if (header != NULL) jose_header_destroy(exec_ctx, header);
+  if (claims != NULL) grpc_jwt_claims_destroy(exec_ctx, claims);
+  cb(exec_ctx, user_data, GRPC_JWT_VERIFIER_BAD_FORMAT, NULL);
 }
 
 grpc_jwt_verifier *grpc_jwt_verifier_create(
diff --git a/src/core/lib/security/credentials/jwt/jwt_verifier.h b/src/core/lib/security/credentials/jwt/jwt_verifier.h
index f09f9d5d47c2e15b021c85e39f56d6328918a2ff..4fa320a415943dc5549f209f65478d5347405b4b 100644
--- a/src/core/lib/security/credentials/jwt/jwt_verifier.h
+++ b/src/core/lib/security/credentials/jwt/jwt_verifier.h
@@ -43,8 +43,7 @@
 /* --- Constants. --- */
 
 #define GRPC_OPENID_CONFIG_URL_SUFFIX "/.well-known/openid-configuration"
-#define GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN \
-  "developer.gserviceaccount.com"
+#define GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN "gserviceaccount.com"
 #define GRPC_GOOGLE_SERVICE_ACCOUNTS_KEY_URL_PREFIX \
   "www.googleapis.com/robot/v1/metadata/x509"
 
@@ -57,6 +56,7 @@ typedef enum {
   GRPC_JWT_VERIFIER_BAD_AUDIENCE,
   GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR,
   GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE,
+  GRPC_JWT_VERIFIER_BAD_SUBJECT,
   GRPC_JWT_VERIFIER_GENERIC_ERROR
 } grpc_jwt_verifier_status;
 
@@ -66,7 +66,7 @@ const char *grpc_jwt_verifier_status_to_string(grpc_jwt_verifier_status status);
 
 typedef struct grpc_jwt_claims grpc_jwt_claims;
 
-void grpc_jwt_claims_destroy(grpc_jwt_claims *claims);
+void grpc_jwt_claims_destroy(grpc_exec_ctx *exec_ctx, grpc_jwt_claims *claims);
 
 /* Returns the whole JSON tree of the claims. */
 const grpc_json *grpc_jwt_claims_json(const grpc_jwt_claims *claims);
@@ -115,7 +115,8 @@ void grpc_jwt_verifier_destroy(grpc_jwt_verifier *verifier);
    is done (maybe in another thread).
    It is the responsibility of the callee to call grpc_jwt_claims_destroy on
    the claims. */
-typedef void (*grpc_jwt_verification_done_cb)(void *user_data,
+typedef void (*grpc_jwt_verification_done_cb)(grpc_exec_ctx *exec_ctx,
+                                              void *user_data,
                                               grpc_jwt_verifier_status status,
                                               grpc_jwt_claims *claims);
 
@@ -129,8 +130,10 @@ void grpc_jwt_verifier_verify(grpc_exec_ctx *exec_ctx,
 
 /* --- TESTING ONLY exposed functions. --- */
 
-grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, grpc_slice buffer);
+grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_exec_ctx *exec_ctx,
+                                           grpc_json *json, grpc_slice buffer);
 grpc_jwt_verifier_status grpc_jwt_claims_check(const grpc_jwt_claims *claims,
                                                const char *audience);
+const char *grpc_jwt_issuer_email_domain(const char *issuer);
 
 #endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_VERIFIER_H */
diff --git a/src/core/lib/security/credentials/oauth2/oauth2_credentials.c b/src/core/lib/security/credentials/oauth2/oauth2_credentials.c
index b3625b22c02c44350c2c40bdec4813b24dbb4903..1b0e43a1e46e1479950a066198058c679e3eef1d 100644
--- a/src/core/lib/security/credentials/oauth2/oauth2_credentials.c
+++ b/src/core/lib/security/credentials/oauth2/oauth2_credentials.c
@@ -118,18 +118,19 @@ void grpc_auth_refresh_token_destruct(grpc_auth_refresh_token *refresh_token) {
 // Oauth2 Token Fetcher credentials.
 //
 
-static void oauth2_token_fetcher_destruct(grpc_call_credentials *creds) {
+static void oauth2_token_fetcher_destruct(grpc_exec_ctx *exec_ctx,
+                                          grpc_call_credentials *creds) {
   grpc_oauth2_token_fetcher_credentials *c =
       (grpc_oauth2_token_fetcher_credentials *)creds;
-  grpc_credentials_md_store_unref(c->access_token_md);
+  grpc_credentials_md_store_unref(exec_ctx, c->access_token_md);
   gpr_mu_destroy(&c->mu);
   grpc_httpcli_context_destroy(&c->httpcli_context);
 }
 
 grpc_credentials_status
 grpc_oauth2_token_fetcher_credentials_parse_server_response(
-    const grpc_http_response *response, grpc_credentials_md_store **token_md,
-    gpr_timespec *token_lifetime) {
+    grpc_exec_ctx *exec_ctx, const grpc_http_response *response,
+    grpc_credentials_md_store **token_md, gpr_timespec *token_lifetime) {
   char *null_terminated_body = NULL;
   char *new_access_token = NULL;
   grpc_credentials_status status = GRPC_CREDENTIALS_OK;
@@ -198,7 +199,7 @@ grpc_oauth2_token_fetcher_credentials_parse_server_response(
     token_lifetime->tv_sec = strtol(expires_in->value, NULL, 10);
     token_lifetime->tv_nsec = 0;
     token_lifetime->clock_type = GPR_TIMESPAN;
-    if (*token_md != NULL) grpc_credentials_md_store_unref(*token_md);
+    if (*token_md != NULL) grpc_credentials_md_store_unref(exec_ctx, *token_md);
     *token_md = grpc_credentials_md_store_create(1);
     grpc_credentials_md_store_add_cstrings(
         *token_md, GRPC_AUTHORIZATION_METADATA_KEY, new_access_token);
@@ -207,7 +208,7 @@ grpc_oauth2_token_fetcher_credentials_parse_server_response(
 
 end:
   if (status != GRPC_CREDENTIALS_OK && (*token_md != NULL)) {
-    grpc_credentials_md_store_unref(*token_md);
+    grpc_credentials_md_store_unref(exec_ctx, *token_md);
     *token_md = NULL;
   }
   if (null_terminated_body != NULL) gpr_free(null_terminated_body);
@@ -230,7 +231,7 @@ static void on_oauth2_token_fetcher_http_response(grpc_exec_ctx *exec_ctx,
 
   gpr_mu_lock(&c->mu);
   status = grpc_oauth2_token_fetcher_credentials_parse_server_response(
-      &r->response, &c->access_token_md, &token_lifetime);
+      exec_ctx, &r->response, &c->access_token_md, &token_lifetime);
   if (status == GRPC_CREDENTIALS_OK) {
     c->token_expiration =
         gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), token_lifetime);
@@ -242,7 +243,7 @@ static void on_oauth2_token_fetcher_http_response(grpc_exec_ctx *exec_ctx,
           "Error occured when fetching oauth2 token.");
   }
   gpr_mu_unlock(&c->mu);
-  grpc_credentials_metadata_request_destroy(r);
+  grpc_credentials_metadata_request_destroy(exec_ctx, r);
 }
 
 static void oauth2_token_fetcher_get_request_metadata(
@@ -268,7 +269,7 @@ static void oauth2_token_fetcher_get_request_metadata(
   if (cached_access_token_md != NULL) {
     cb(exec_ctx, user_data, cached_access_token_md->entries,
        cached_access_token_md->num_entries, GRPC_CREDENTIALS_OK, NULL);
-    grpc_credentials_md_store_unref(cached_access_token_md);
+    grpc_credentials_md_store_unref(exec_ctx, cached_access_token_md);
   } else {
     c->fetch_func(
         exec_ctx,
@@ -312,10 +313,12 @@ static void compute_engine_fetch_oauth2(
      extreme memory pressure. */
   grpc_resource_quota *resource_quota =
       grpc_resource_quota_create("oauth2_credentials");
-  grpc_httpcli_get(exec_ctx, httpcli_context, pollent, resource_quota, &request,
-                   deadline, grpc_closure_create(response_cb, metadata_req),
-                   &metadata_req->response);
-  grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
+  grpc_httpcli_get(
+      exec_ctx, httpcli_context, pollent, resource_quota, &request, deadline,
+      grpc_closure_create(response_cb, metadata_req, grpc_schedule_on_exec_ctx),
+
+      &metadata_req->response);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
 }
 
 grpc_call_credentials *grpc_google_compute_engine_credentials_create(
@@ -334,11 +337,12 @@ grpc_call_credentials *grpc_google_compute_engine_credentials_create(
 // Google Refresh Token credentials.
 //
 
-static void refresh_token_destruct(grpc_call_credentials *creds) {
+static void refresh_token_destruct(grpc_exec_ctx *exec_ctx,
+                                   grpc_call_credentials *creds) {
   grpc_google_refresh_token_credentials *c =
       (grpc_google_refresh_token_credentials *)creds;
   grpc_auth_refresh_token_destruct(&c->refresh_token);
-  oauth2_token_fetcher_destruct(&c->base.base);
+  oauth2_token_fetcher_destruct(exec_ctx, &c->base.base);
 }
 
 static grpc_call_credentials_vtable refresh_token_vtable = {
@@ -368,11 +372,12 @@ static void refresh_token_fetch_oauth2(
      extreme memory pressure. */
   grpc_resource_quota *resource_quota =
       grpc_resource_quota_create("oauth2_credentials_refresh");
-  grpc_httpcli_post(exec_ctx, httpcli_context, pollent, resource_quota,
-                    &request, body, strlen(body), deadline,
-                    grpc_closure_create(response_cb, metadata_req),
-                    &metadata_req->response);
-  grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
+  grpc_httpcli_post(
+      exec_ctx, httpcli_context, pollent, resource_quota, &request, body,
+      strlen(body), deadline,
+      grpc_closure_create(response_cb, metadata_req, grpc_schedule_on_exec_ctx),
+      &metadata_req->response);
+  grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
   gpr_free(body);
 }
 
@@ -424,9 +429,10 @@ grpc_call_credentials *grpc_google_refresh_token_credentials_create(
 // Oauth2 Access Token credentials.
 //
 
-static void access_token_destruct(grpc_call_credentials *creds) {
+static void access_token_destruct(grpc_exec_ctx *exec_ctx,
+                                  grpc_call_credentials *creds) {
   grpc_access_token_credentials *c = (grpc_access_token_credentials *)creds;
-  grpc_credentials_md_store_unref(c->access_token_md);
+  grpc_credentials_md_store_unref(exec_ctx, c->access_token_md);
 }
 
 static void access_token_get_request_metadata(
diff --git a/src/core/lib/security/credentials/oauth2/oauth2_credentials.h b/src/core/lib/security/credentials/oauth2/oauth2_credentials.h
index 7f6f205c221645b7b1472ef0b136c131f28fbb80..2d7c02ccf570c5bdc958302b44322304ac8e0695 100644
--- a/src/core/lib/security/credentials/oauth2/oauth2_credentials.h
+++ b/src/core/lib/security/credentials/oauth2/oauth2_credentials.h
@@ -103,7 +103,7 @@ grpc_refresh_token_credentials_create_from_auth_refresh_token(
 // Exposed for testing only.
 grpc_credentials_status
 grpc_oauth2_token_fetcher_credentials_parse_server_response(
-    const struct grpc_http_response *response,
+    grpc_exec_ctx *exec_ctx, const struct grpc_http_response *response,
     grpc_credentials_md_store **token_md, gpr_timespec *token_lifetime);
 
 #endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_OAUTH2_OAUTH2_CREDENTIALS_H */
diff --git a/src/core/lib/security/credentials/plugin/plugin_credentials.c b/src/core/lib/security/credentials/plugin/plugin_credentials.c
index 5d950098a063b78f9440e75cb6d394279cffcd8d..f90d7dce83f6f4977dd608f14f4d0fc7959ea355 100644
--- a/src/core/lib/security/credentials/plugin/plugin_credentials.c
+++ b/src/core/lib/security/credentials/plugin/plugin_credentials.c
@@ -35,20 +35,22 @@
 
 #include <string.h>
 
-#include "src/core/lib/surface/api_trace.h"
-
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/api_trace.h"
+
 typedef struct {
   void *user_data;
   grpc_credentials_metadata_cb cb;
 } grpc_metadata_plugin_request;
 
-static void plugin_destruct(grpc_call_credentials *creds) {
+static void plugin_destruct(grpc_exec_ctx *exec_ctx,
+                            grpc_call_credentials *creds) {
   grpc_plugin_credentials *c = (grpc_plugin_credentials *)creds;
   if (c->plugin.state != NULL && c->plugin.destroy != NULL) {
     c->plugin.destroy(c->plugin.state);
@@ -100,8 +102,8 @@ static void plugin_md_request_metadata_ready(void *request,
       r->cb(&exec_ctx, r->user_data, md_array, num_md, GRPC_CREDENTIALS_OK,
             NULL);
       for (i = 0; i < num_md; i++) {
-        grpc_slice_unref(md_array[i].key);
-        grpc_slice_unref(md_array[i].value);
+        grpc_slice_unref_internal(&exec_ctx, md_array[i].key);
+        grpc_slice_unref_internal(&exec_ctx, md_array[i].value);
       }
       gpr_free(md_array);
     } else if (num_md == 0) {
diff --git a/src/core/lib/security/credentials/ssl/ssl_credentials.c b/src/core/lib/security/credentials/ssl/ssl_credentials.c
index 0dc1fccec4a76b7f9cc772a8c2d6282ed634caaa..4eebb7d6136647359f754b1c471eb96b39a89345 100644
--- a/src/core/lib/security/credentials/ssl/ssl_credentials.c
+++ b/src/core/lib/security/credentials/ssl/ssl_credentials.c
@@ -57,7 +57,8 @@ static void ssl_copy_key_material(const char *input, unsigned char **output,
 // SSL Channel Credentials.
 //
 
-static void ssl_destruct(grpc_channel_credentials *creds) {
+static void ssl_destruct(grpc_exec_ctx *exec_ctx,
+                         grpc_channel_credentials *creds) {
   grpc_ssl_credentials *c = (grpc_ssl_credentials *)creds;
   if (c->config.pem_root_certs != NULL) gpr_free(c->config.pem_root_certs);
   if (c->config.pem_private_key != NULL) gpr_free(c->config.pem_private_key);
@@ -65,9 +66,10 @@ static void ssl_destruct(grpc_channel_credentials *creds) {
 }
 
 static grpc_security_status ssl_create_security_connector(
-    grpc_channel_credentials *creds, grpc_call_credentials *call_creds,
-    const char *target, const grpc_channel_args *args,
-    grpc_channel_security_connector **sc, grpc_channel_args **new_args) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_credentials *creds,
+    grpc_call_credentials *call_creds, const char *target,
+    const grpc_channel_args *args, grpc_channel_security_connector **sc,
+    grpc_channel_args **new_args) {
   grpc_ssl_credentials *c = (grpc_ssl_credentials *)creds;
   grpc_security_status status = GRPC_SECURITY_OK;
   size_t i = 0;
@@ -83,7 +85,7 @@ static grpc_security_status ssl_create_security_connector(
     }
   }
   status = grpc_ssl_channel_security_connector_create(
-      call_creds, &c->config, target, overridden_target_name, sc);
+      exec_ctx, call_creds, &c->config, target, overridden_target_name, sc);
   if (status != GRPC_SECURITY_OK) {
     return status;
   }
@@ -138,7 +140,8 @@ grpc_channel_credentials *grpc_ssl_credentials_create(
 // SSL Server Credentials.
 //
 
-static void ssl_server_destruct(grpc_server_credentials *creds) {
+static void ssl_server_destruct(grpc_exec_ctx *exec_ctx,
+                                grpc_server_credentials *creds) {
   grpc_ssl_server_credentials *c = (grpc_ssl_server_credentials *)creds;
   size_t i;
   for (i = 0; i < c->config.num_key_cert_pairs; i++) {
@@ -161,9 +164,10 @@ static void ssl_server_destruct(grpc_server_credentials *creds) {
 }
 
 static grpc_security_status ssl_server_create_security_connector(
-    grpc_server_credentials *creds, grpc_server_security_connector **sc) {
+    grpc_exec_ctx *exec_ctx, grpc_server_credentials *creds,
+    grpc_server_security_connector **sc) {
   grpc_ssl_server_credentials *c = (grpc_ssl_server_credentials *)creds;
-  return grpc_ssl_server_security_connector_create(&c->config, sc);
+  return grpc_ssl_server_security_connector_create(exec_ctx, &c->config, sc);
 }
 
 static grpc_server_credentials_vtable ssl_server_vtable = {
diff --git a/src/core/lib/security/transport/client_auth_filter.c b/src/core/lib/security/transport/client_auth_filter.c
index 053bf5972c2b41b72a26c6697c75fa284b23417a..b7f6fd23e3055dceb1cc7ff6ecdd4a517a9fd279 100644
--- a/src/core/lib/security/transport/client_auth_filter.c
+++ b/src/core/lib/security/transport/client_auth_filter.c
@@ -44,6 +44,7 @@
 #include "src/core/lib/security/context/security_context.h"
 #include "src/core/lib/security/credentials/credentials.h"
 #include "src/core/lib/security/transport/security_connector.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/transport/static_metadata.h"
@@ -93,7 +94,8 @@ static void bubble_up_error(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
   call_data *calld = elem->call_data;
   gpr_log(GPR_ERROR, "Client side authentication failure: %s", error_msg);
   grpc_slice error_slice = grpc_slice_from_copied_string(error_msg);
-  grpc_transport_stream_op_add_close(&calld->op, status, &error_slice);
+  grpc_transport_stream_op_add_close(exec_ctx, &calld->op, status,
+                                     &error_slice);
   grpc_call_next_op(exec_ctx, elem, &calld->op);
 }
 
@@ -121,8 +123,9 @@ static void on_credentials_metadata(grpc_exec_ctx *exec_ctx, void *user_data,
   for (i = 0; i < num_md; i++) {
     grpc_metadata_batch_add_tail(
         mdb, &calld->md_links[i],
-        grpc_mdelem_from_slices(grpc_slice_ref(md_elems[i].key),
-                                grpc_slice_ref(md_elems[i].value)));
+        grpc_mdelem_from_slices(exec_ctx,
+                                grpc_slice_ref_internal(md_elems[i].key),
+                                grpc_slice_ref_internal(md_elems[i].value)));
   }
   grpc_call_next_op(exec_ctx, elem, op);
 }
@@ -248,10 +251,10 @@ static void auth_start_transport_op(grpc_exec_ctx *exec_ctx,
       /* Pointer comparison is OK for md_elems created from the same context.
        */
       if (md->key == GRPC_MDSTR_AUTHORITY) {
-        if (calld->host != NULL) GRPC_MDSTR_UNREF(calld->host);
+        if (calld->host != NULL) GRPC_MDSTR_UNREF(exec_ctx, calld->host);
         calld->host = GRPC_MDSTR_REF(md->value);
       } else if (md->key == GRPC_MDSTR_PATH) {
-        if (calld->method != NULL) GRPC_MDSTR_UNREF(calld->method);
+        if (calld->method != NULL) GRPC_MDSTR_UNREF(exec_ctx, calld->method);
         calld->method = GRPC_MDSTR_REF(md->value);
       }
     }
@@ -292,20 +295,20 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               void *ignored) {
   call_data *calld = elem->call_data;
-  grpc_call_credentials_unref(calld->creds);
+  grpc_call_credentials_unref(exec_ctx, calld->creds);
   if (calld->host != NULL) {
-    GRPC_MDSTR_UNREF(calld->host);
+    GRPC_MDSTR_UNREF(exec_ctx, calld->host);
   }
   if (calld->method != NULL) {
-    GRPC_MDSTR_UNREF(calld->method);
+    GRPC_MDSTR_UNREF(exec_ctx, calld->method);
   }
   reset_auth_metadata_context(&calld->auth_md_context);
 }
 
 /* Constructor for channel_data */
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   grpc_security_connector *sc =
       grpc_find_security_connector_in_args(args->channel_args);
   grpc_auth_context *auth_context =
@@ -327,6 +330,7 @@ static void init_channel_elem(grpc_exec_ctx *exec_ctx,
           sc, "client_auth_filter");
   chand->auth_context =
       GRPC_AUTH_CONTEXT_REF(auth_context, "client_auth_filter");
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel data */
@@ -336,7 +340,7 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   channel_data *chand = elem->channel_data;
   grpc_channel_security_connector *sc = chand->security_connector;
   if (sc != NULL) {
-    GRPC_SECURITY_CONNECTOR_UNREF(&sc->base, "client_auth_filter");
+    GRPC_SECURITY_CONNECTOR_UNREF(exec_ctx, &sc->base, "client_auth_filter");
   }
   GRPC_AUTH_CONTEXT_UNREF(chand->auth_context, "client_auth_filter");
 }
diff --git a/src/core/lib/security/transport/secure_endpoint.c b/src/core/lib/security/transport/secure_endpoint.c
index 1b278410e807b7fbdffa6ffd065bc171c2a51617..18a7a6f7e7fefeb665c87eedbd924c8dd9cde02f 100644
--- a/src/core/lib/security/transport/secure_endpoint.c
+++ b/src/core/lib/security/transport/secure_endpoint.c
@@ -46,6 +46,7 @@
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/security/transport/secure_endpoint.h"
 #include "src/core/lib/security/transport/tsi_error.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/tsi/transport_security_interface.h"
@@ -80,11 +81,11 @@ static void destroy(grpc_exec_ctx *exec_ctx, secure_endpoint *secure_ep) {
   secure_endpoint *ep = secure_ep;
   grpc_endpoint_destroy(exec_ctx, ep->wrapped_ep);
   tsi_frame_protector_destroy(ep->protector);
-  grpc_slice_buffer_destroy(&ep->leftover_bytes);
-  grpc_slice_unref(ep->read_staging_buffer);
-  grpc_slice_unref(ep->write_staging_buffer);
-  grpc_slice_buffer_destroy(&ep->output_buffer);
-  grpc_slice_buffer_destroy(&ep->source_buffer);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &ep->leftover_bytes);
+  grpc_slice_unref_internal(exec_ctx, ep->read_staging_buffer);
+  grpc_slice_unref_internal(exec_ctx, ep->write_staging_buffer);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &ep->output_buffer);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &ep->source_buffer);
   gpr_mu_destroy(&ep->protector_mu);
   gpr_free(ep);
 }
@@ -146,7 +147,7 @@ static void call_read_cb(grpc_exec_ctx *exec_ctx, secure_endpoint *ep,
     }
   }
   ep->read_buffer = NULL;
-  grpc_exec_ctx_sched(exec_ctx, ep->read_cb, error, NULL);
+  grpc_closure_sched(exec_ctx, ep->read_cb, error);
   SECURE_ENDPOINT_UNREF(exec_ctx, ep, "read");
 }
 
@@ -160,7 +161,7 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *user_data,
   uint8_t *end = GRPC_SLICE_END_PTR(ep->read_staging_buffer);
 
   if (error != GRPC_ERROR_NONE) {
-    grpc_slice_buffer_reset_and_unref(ep->read_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx, ep->read_buffer);
     call_read_cb(exec_ctx, ep, GRPC_ERROR_CREATE_REFERENCING(
                                    "Secure read failed", &error, 1));
     return;
@@ -215,10 +216,10 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *user_data,
 
   /* TODO(yangg) experiment with moving this block after read_cb to see if it
      helps latency */
-  grpc_slice_buffer_reset_and_unref(&ep->source_buffer);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &ep->source_buffer);
 
   if (result != TSI_OK) {
-    grpc_slice_buffer_reset_and_unref(ep->read_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx, ep->read_buffer);
     call_read_cb(exec_ctx, ep, grpc_set_tsi_error_result(
                                    GRPC_ERROR_CREATE("Unwrap failed"), result));
     return;
@@ -232,7 +233,7 @@ static void endpoint_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *secure_ep,
   secure_endpoint *ep = (secure_endpoint *)secure_ep;
   ep->read_cb = cb;
   ep->read_buffer = slices;
-  grpc_slice_buffer_reset_and_unref(ep->read_buffer);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, ep->read_buffer);
 
   SECURE_ENDPOINT_REF(ep, "read");
   if (ep->leftover_bytes.count) {
@@ -264,7 +265,7 @@ static void endpoint_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *secure_ep,
   uint8_t *cur = GRPC_SLICE_START_PTR(ep->write_staging_buffer);
   uint8_t *end = GRPC_SLICE_END_PTR(ep->write_staging_buffer);
 
-  grpc_slice_buffer_reset_and_unref(&ep->output_buffer);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &ep->output_buffer);
 
   if (grpc_trace_secure_endpoint) {
     for (i = 0; i < slices->count; i++) {
@@ -328,11 +329,10 @@ static void endpoint_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *secure_ep,
 
   if (result != TSI_OK) {
     /* TODO(yangg) do different things according to the error type? */
-    grpc_slice_buffer_reset_and_unref(&ep->output_buffer);
-    grpc_exec_ctx_sched(
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &ep->output_buffer);
+    grpc_closure_sched(
         exec_ctx, cb,
-        grpc_set_tsi_error_result(GRPC_ERROR_CREATE("Wrap failed"), result),
-        NULL);
+        grpc_set_tsi_error_result(GRPC_ERROR_CREATE("Wrap failed"), result));
     GPR_TIMER_END("secure_endpoint.endpoint_write", 0);
     return;
   }
@@ -372,7 +372,10 @@ static char *endpoint_get_peer(grpc_endpoint *secure_ep) {
   return grpc_endpoint_get_peer(ep->wrapped_ep);
 }
 
-static int endpoint_get_fd(grpc_endpoint *secure_ep) { return -1; }
+static int endpoint_get_fd(grpc_endpoint *secure_ep) {
+  secure_endpoint *ep = (secure_endpoint *)secure_ep;
+  return grpc_endpoint_get_fd(ep->wrapped_ep);
+}
 
 static grpc_workqueue *endpoint_get_workqueue(grpc_endpoint *secure_ep) {
   secure_endpoint *ep = (secure_endpoint *)secure_ep;
@@ -407,14 +410,14 @@ grpc_endpoint *grpc_secure_endpoint_create(
   grpc_slice_buffer_init(&ep->leftover_bytes);
   for (i = 0; i < leftover_nslices; i++) {
     grpc_slice_buffer_add(&ep->leftover_bytes,
-                          grpc_slice_ref(leftover_slices[i]));
+                          grpc_slice_ref_internal(leftover_slices[i]));
   }
   ep->write_staging_buffer = grpc_slice_malloc(STAGING_BUFFER_SIZE);
   ep->read_staging_buffer = grpc_slice_malloc(STAGING_BUFFER_SIZE);
   grpc_slice_buffer_init(&ep->output_buffer);
   grpc_slice_buffer_init(&ep->source_buffer);
   ep->read_buffer = NULL;
-  grpc_closure_init(&ep->on_read, on_read, ep);
+  grpc_closure_init(&ep->on_read, on_read, ep, grpc_schedule_on_exec_ctx);
   gpr_mu_init(&ep->protector_mu);
   gpr_ref_init(&ep->ref, 1);
   return &ep->base;
diff --git a/src/core/lib/security/transport/security_connector.c b/src/core/lib/security/transport/security_connector.c
index 5b088aa58dbf02d3cc00872e29ca866224496fa1..5aa26e05771a0c0e795998aa81ee04b445153e34 100644
--- a/src/core/lib/security/transport/security_connector.c
+++ b/src/core/lib/security/transport/security_connector.c
@@ -134,9 +134,9 @@ void grpc_security_connector_check_peer(grpc_exec_ctx *exec_ctx,
                                         grpc_auth_context **auth_context,
                                         grpc_closure *on_peer_checked) {
   if (sc == NULL) {
-    grpc_exec_ctx_sched(
+    grpc_closure_sched(
         exec_ctx, on_peer_checked,
-        GRPC_ERROR_CREATE("cannot check peer -- no security connector"), NULL);
+        GRPC_ERROR_CREATE("cannot check peer -- no security connector"));
     tsi_peer_destruct(&peer);
   } else {
     sc->vtable->check_peer(exec_ctx, sc, peer, auth_context, on_peer_checked);
@@ -172,7 +172,8 @@ grpc_security_connector *grpc_security_connector_ref(
 }
 
 #ifdef GRPC_SECURITY_CONNECTOR_REFCOUNT_DEBUG
-void grpc_security_connector_unref(grpc_security_connector *sc,
+void grpc_security_connector_unref(grpc_exec_ctx *exec_ctx,
+                                   grpc_security_connector *sc,
                                    const char *file, int line,
                                    const char *reason) {
   if (sc == NULL) return;
@@ -180,14 +181,15 @@ void grpc_security_connector_unref(grpc_security_connector *sc,
           "SECURITY_CONNECTOR:%p unref %d -> %d %s", sc,
           (int)sc->refcount.count, (int)sc->refcount.count - 1, reason);
 #else
-void grpc_security_connector_unref(grpc_security_connector *sc) {
+void grpc_security_connector_unref(grpc_exec_ctx *exec_ctx,
+                                   grpc_security_connector *sc) {
   if (sc == NULL) return;
 #endif
-  if (gpr_unref(&sc->refcount)) sc->vtable->destroy(sc);
+  if (gpr_unref(&sc->refcount)) sc->vtable->destroy(exec_ctx, sc);
 }
 
-static void connector_pointer_arg_destroy(void *p) {
-  GRPC_SECURITY_CONNECTOR_UNREF(p, "connector_pointer_arg_destroy");
+static void connector_pointer_arg_destroy(grpc_exec_ctx *exec_ctx, void *p) {
+  GRPC_SECURITY_CONNECTOR_UNREF(exec_ctx, p, "connector_pointer_arg_destroy");
 }
 
 static void *connector_pointer_arg_copy(void *p) {
@@ -233,13 +235,17 @@ grpc_security_connector *grpc_find_security_connector_in_args(
 
 /* -- Fake implementation. -- */
 
-static void fake_channel_destroy(grpc_security_connector *sc) {
+static void fake_channel_destroy(grpc_exec_ctx *exec_ctx,
+                                 grpc_security_connector *sc) {
   grpc_channel_security_connector *c = (grpc_channel_security_connector *)sc;
-  grpc_call_credentials_unref(c->request_metadata_creds);
+  grpc_call_credentials_unref(exec_ctx, c->request_metadata_creds);
   gpr_free(sc);
 }
 
-static void fake_server_destroy(grpc_security_connector *sc) { gpr_free(sc); }
+static void fake_server_destroy(grpc_exec_ctx *exec_ctx,
+                                grpc_security_connector *sc) {
+  gpr_free(sc);
+}
 
 static void fake_check_peer(grpc_exec_ctx *exec_ctx,
                             grpc_security_connector *sc, tsi_peer peer,
@@ -273,7 +279,7 @@ static void fake_check_peer(grpc_exec_ctx *exec_ctx,
       GRPC_FAKE_TRANSPORT_SECURITY_TYPE);
 
 end:
-  grpc_exec_ctx_sched(exec_ctx, on_peer_checked, error, NULL);
+  grpc_closure_sched(exec_ctx, on_peer_checked, error);
   tsi_peer_destruct(&peer);
 }
 
@@ -351,10 +357,11 @@ typedef struct {
   tsi_ssl_handshaker_factory *handshaker_factory;
 } grpc_ssl_server_security_connector;
 
-static void ssl_channel_destroy(grpc_security_connector *sc) {
+static void ssl_channel_destroy(grpc_exec_ctx *exec_ctx,
+                                grpc_security_connector *sc) {
   grpc_ssl_channel_security_connector *c =
       (grpc_ssl_channel_security_connector *)sc;
-  grpc_call_credentials_unref(c->base.request_metadata_creds);
+  grpc_call_credentials_unref(exec_ctx, c->base.request_metadata_creds);
   if (c->handshaker_factory != NULL) {
     tsi_ssl_handshaker_factory_destroy(c->handshaker_factory);
   }
@@ -363,7 +370,8 @@ static void ssl_channel_destroy(grpc_security_connector *sc) {
   gpr_free(sc);
 }
 
-static void ssl_server_destroy(grpc_security_connector *sc) {
+static void ssl_server_destroy(grpc_exec_ctx *exec_ctx,
+                               grpc_security_connector *sc) {
   grpc_ssl_server_security_connector *c =
       (grpc_ssl_server_security_connector *)sc;
   if (c->handshaker_factory != NULL) {
@@ -508,7 +516,7 @@ static void ssl_channel_check_peer(grpc_exec_ctx *exec_ctx,
                                              ? c->overridden_target_name
                                              : c->target_name,
                                      &peer, auth_context);
-  grpc_exec_ctx_sched(exec_ctx, on_peer_checked, error, NULL);
+  grpc_closure_sched(exec_ctx, on_peer_checked, error);
   tsi_peer_destruct(&peer);
 }
 
@@ -518,7 +526,7 @@ static void ssl_server_check_peer(grpc_exec_ctx *exec_ctx,
                                   grpc_closure *on_peer_checked) {
   grpc_error *error = ssl_check_peer(sc, NULL, &peer, auth_context);
   tsi_peer_destruct(&peer);
-  grpc_exec_ctx_sched(exec_ctx, on_peer_checked, error, NULL);
+  grpc_closure_sched(exec_ctx, on_peer_checked, error);
 }
 
 static void add_shallow_auth_property_to_peer(tsi_peer *peer,
@@ -669,7 +677,7 @@ size_t grpc_get_default_ssl_roots(const unsigned char **pem_root_certs) {
 }
 
 grpc_security_status grpc_ssl_channel_security_connector_create(
-    grpc_call_credentials *request_metadata_creds,
+    grpc_exec_ctx *exec_ctx, grpc_call_credentials *request_metadata_creds,
     const grpc_ssl_config *config, const char *target_name,
     const char *overridden_target_name, grpc_channel_security_connector **sc) {
   size_t num_alpn_protocols = grpc_chttp2_num_alpn_versions();
@@ -730,7 +738,7 @@ grpc_security_status grpc_ssl_channel_security_connector_create(
   if (result != TSI_OK) {
     gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
             tsi_result_to_string(result));
-    ssl_channel_destroy(&c->base.base);
+    ssl_channel_destroy(exec_ctx, &c->base.base);
     *sc = NULL;
     goto error;
   }
@@ -746,7 +754,8 @@ error:
 }
 
 grpc_security_status grpc_ssl_server_security_connector_create(
-    const grpc_ssl_server_config *config, grpc_server_security_connector **sc) {
+    grpc_exec_ctx *exec_ctx, const grpc_ssl_server_config *config,
+    grpc_server_security_connector **sc) {
   size_t num_alpn_protocols = grpc_chttp2_num_alpn_versions();
   const unsigned char **alpn_protocol_strings =
       gpr_malloc(sizeof(const char *) * num_alpn_protocols);
@@ -786,7 +795,7 @@ grpc_security_status grpc_ssl_server_security_connector_create(
   if (result != TSI_OK) {
     gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
             tsi_result_to_string(result));
-    ssl_server_destroy(&c->base.base);
+    ssl_server_destroy(exec_ctx, &c->base.base);
     *sc = NULL;
     goto error;
   }
diff --git a/src/core/lib/security/transport/security_connector.h b/src/core/lib/security/transport/security_connector.h
index a84b35905136e8c85f4dcec413629f023adc5f03..eba4e6d1d7baf83102917bd8e2536bc31ed3bba2 100644
--- a/src/core/lib/security/transport/security_connector.h
+++ b/src/core/lib/security/transport/security_connector.h
@@ -60,7 +60,7 @@ typedef struct grpc_security_connector grpc_security_connector;
 #define GRPC_SECURITY_CONNECTOR_ARG "grpc.security_connector"
 
 typedef struct {
-  void (*destroy)(grpc_security_connector *sc);
+  void (*destroy)(grpc_exec_ctx *exec_ctx, grpc_security_connector *sc);
   void (*check_peer)(grpc_exec_ctx *exec_ctx, grpc_security_connector *sc,
                      tsi_peer peer, grpc_auth_context **auth_context,
                      grpc_closure *on_peer_checked);
@@ -81,20 +81,23 @@ struct grpc_security_connector {
 #ifdef GRPC_SECURITY_CONNECTOR_REFCOUNT_DEBUG
 #define GRPC_SECURITY_CONNECTOR_REF(p, r) \
   grpc_security_connector_ref((p), __FILE__, __LINE__, (r))
-#define GRPC_SECURITY_CONNECTOR_UNREF(p, r) \
-  grpc_security_connector_unref((p), __FILE__, __LINE__, (r))
+#define GRPC_SECURITY_CONNECTOR_UNREF(exec_ctx, p, r) \
+  grpc_security_connector_unref((exec_ctx), (p), __FILE__, __LINE__, (r))
 grpc_security_connector *grpc_security_connector_ref(
     grpc_security_connector *policy, const char *file, int line,
     const char *reason);
-void grpc_security_connector_unref(grpc_security_connector *policy,
+void grpc_security_connector_unref(grpc_exec_ctx *exec_ctx,
+                                   grpc_security_connector *policy,
                                    const char *file, int line,
                                    const char *reason);
 #else
 #define GRPC_SECURITY_CONNECTOR_REF(p, r) grpc_security_connector_ref((p))
-#define GRPC_SECURITY_CONNECTOR_UNREF(p, r) grpc_security_connector_unref((p))
+#define GRPC_SECURITY_CONNECTOR_UNREF(exec_ctx, p, r) \
+  grpc_security_connector_unref((exec_ctx), (p))
 grpc_security_connector *grpc_security_connector_ref(
     grpc_security_connector *policy);
-void grpc_security_connector_unref(grpc_security_connector *policy);
+void grpc_security_connector_unref(grpc_exec_ctx *exec_ctx,
+                                   grpc_security_connector *policy);
 #endif
 
 /* Check the peer. Callee takes ownership of the peer object.
@@ -203,7 +206,7 @@ typedef struct {
   specific error code otherwise.
 */
 grpc_security_status grpc_ssl_channel_security_connector_create(
-    grpc_call_credentials *request_metadata_creds,
+    grpc_exec_ctx *exec_ctx, grpc_call_credentials *request_metadata_creds,
     const grpc_ssl_config *config, const char *target_name,
     const char *overridden_target_name, grpc_channel_security_connector **sc);
 
@@ -232,7 +235,8 @@ typedef struct {
   specific error code otherwise.
 */
 grpc_security_status grpc_ssl_server_security_connector_create(
-    const grpc_ssl_server_config *config, grpc_server_security_connector **sc);
+    grpc_exec_ctx *exec_ctx, const grpc_ssl_server_config *config,
+    grpc_server_security_connector **sc);
 
 /* Util. */
 const tsi_peer_property *tsi_peer_get_property_by_name(const tsi_peer *peer,
diff --git a/src/core/lib/security/transport/security_handshaker.c b/src/core/lib/security/transport/security_handshaker.c
index 41a775db855b5442cd3e964c05d5fcd9de559442..5e75856c7a456b1c37e31436614a581b341041cb 100644
--- a/src/core/lib/security/transport/security_handshaker.c
+++ b/src/core/lib/security/transport/security_handshaker.c
@@ -42,9 +42,11 @@
 
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/security/context/security_context.h"
 #include "src/core/lib/security/transport/secure_endpoint.h"
 #include "src/core/lib/security/transport/tsi_error.h"
+#include "src/core/lib/slice/slice_internal.h"
 
 #define GRPC_INITIAL_HANDSHAKE_BUFFER_SIZE 256
 
@@ -86,26 +88,27 @@ static void security_handshaker_unref(grpc_exec_ctx *exec_ctx,
       grpc_endpoint_destroy(exec_ctx, h->endpoint_to_destroy);
     }
     if (h->read_buffer_to_destroy != NULL) {
-      grpc_slice_buffer_destroy(h->read_buffer_to_destroy);
+      grpc_slice_buffer_destroy_internal(exec_ctx, h->read_buffer_to_destroy);
       gpr_free(h->read_buffer_to_destroy);
     }
     gpr_free(h->handshake_buffer);
-    grpc_slice_buffer_destroy(&h->left_overs);
-    grpc_slice_buffer_destroy(&h->outgoing);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &h->left_overs);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &h->outgoing);
     GRPC_AUTH_CONTEXT_UNREF(h->auth_context, "handshake");
-    GRPC_SECURITY_CONNECTOR_UNREF(h->connector, "handshake");
+    GRPC_SECURITY_CONNECTOR_UNREF(exec_ctx, h->connector, "handshake");
     gpr_free(h);
   }
 }
 
 // Set args fields to NULL, saving the endpoint and read buffer for
 // later destruction.
-static void cleanup_args_for_failure_locked(security_handshaker *h) {
+static void cleanup_args_for_failure_locked(grpc_exec_ctx *exec_ctx,
+                                            security_handshaker *h) {
   h->endpoint_to_destroy = h->args->endpoint;
   h->args->endpoint = NULL;
   h->read_buffer_to_destroy = h->args->read_buffer;
   h->args->read_buffer = NULL;
-  grpc_channel_args_destroy(h->args->args);
+  grpc_channel_args_destroy(exec_ctx, h->args->args);
   h->args->args = NULL;
 }
 
@@ -130,13 +133,13 @@ static void security_handshake_failed_locked(grpc_exec_ctx *exec_ctx,
     grpc_endpoint_shutdown(exec_ctx, h->args->endpoint);
     // Not shutting down, so the write failed.  Clean up before
     // invoking the callback.
-    cleanup_args_for_failure_locked(h);
+    cleanup_args_for_failure_locked(exec_ctx, h);
     // Set shutdown to true so that subsequent calls to
     // security_handshaker_shutdown() do nothing.
     h->shutdown = true;
   }
   // Invoke callback.
-  grpc_exec_ctx_sched(exec_ctx, h->on_handshake_done, error, NULL);
+  grpc_closure_sched(exec_ctx, h->on_handshake_done, error);
 }
 
 static void on_peer_checked(grpc_exec_ctx *exec_ctx, void *arg,
@@ -165,15 +168,15 @@ static void on_peer_checked(grpc_exec_ctx *exec_ctx, void *arg,
   h->left_overs.length = 0;
   // Clear out the read buffer before it gets passed to the transport,
   // since any excess bytes were already copied to h->left_overs.
-  grpc_slice_buffer_reset_and_unref(h->args->read_buffer);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, h->args->read_buffer);
   // Add auth context to channel args.
   grpc_arg auth_context_arg = grpc_auth_context_to_arg(h->auth_context);
   grpc_channel_args *tmp_args = h->args->args;
   h->args->args =
       grpc_channel_args_copy_and_add(tmp_args, &auth_context_arg, 1);
-  grpc_channel_args_destroy(tmp_args);
+  grpc_channel_args_destroy(exec_ctx, tmp_args);
   // Invoke callback.
-  grpc_exec_ctx_sched(exec_ctx, h->on_handshake_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, h->on_handshake_done, GRPC_ERROR_NONE);
   // Set shutdown to true so that subsequent calls to
   // security_handshaker_shutdown() do nothing.
   h->shutdown = true;
@@ -218,7 +221,7 @@ static grpc_error *send_handshake_bytes_to_peer_locked(grpc_exec_ctx *exec_ctx,
   // Send data.
   grpc_slice to_send =
       grpc_slice_from_copied_buffer((const char *)h->handshake_buffer, offset);
-  grpc_slice_buffer_reset_and_unref(&h->outgoing);
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &h->outgoing);
   grpc_slice_buffer_add(&h->outgoing, to_send);
   grpc_endpoint_write(exec_ctx, h->args->endpoint, &h->outgoing,
                       &h->on_handshake_data_sent_to_peer);
@@ -287,7 +290,7 @@ static void on_handshake_data_received_from_peer(grpc_exec_ctx *exec_ctx,
           grpc_slice_split_tail(&h->args->read_buffer->slices[i],
                                 consumed_slice_size));
       /* split_tail above increments refcount. */
-      grpc_slice_unref(h->args->read_buffer->slices[i]);
+      grpc_slice_unref_internal(exec_ctx, h->args->read_buffer->slices[i]);
     }
     grpc_slice_buffer_addn(
         &h->left_overs, &h->args->read_buffer->slices[i + 1],
@@ -350,7 +353,7 @@ static void security_handshaker_shutdown(grpc_exec_ctx *exec_ctx,
   if (!h->shutdown) {
     h->shutdown = true;
     grpc_endpoint_shutdown(exec_ctx, h->args->endpoint);
-    cleanup_args_for_failure_locked(h);
+    cleanup_args_for_failure_locked(exec_ctx, h);
   }
   gpr_mu_unlock(&h->mu);
 }
@@ -392,10 +395,13 @@ static grpc_handshaker *security_handshaker_create(
   h->handshake_buffer_size = GRPC_INITIAL_HANDSHAKE_BUFFER_SIZE;
   h->handshake_buffer = gpr_malloc(h->handshake_buffer_size);
   grpc_closure_init(&h->on_handshake_data_sent_to_peer,
-                    on_handshake_data_sent_to_peer, h);
+                    on_handshake_data_sent_to_peer, h,
+                    grpc_schedule_on_exec_ctx);
   grpc_closure_init(&h->on_handshake_data_received_from_peer,
-                    on_handshake_data_received_from_peer, h);
-  grpc_closure_init(&h->on_peer_checked, on_peer_checked, h);
+                    on_handshake_data_received_from_peer, h,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&h->on_peer_checked, on_peer_checked, h,
+                    grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&h->left_overs);
   grpc_slice_buffer_init(&h->outgoing);
   return &h->base;
@@ -418,9 +424,8 @@ static void fail_handshaker_do_handshake(grpc_exec_ctx *exec_ctx,
                                          grpc_tcp_server_acceptor *acceptor,
                                          grpc_closure *on_handshake_done,
                                          grpc_handshaker_args *args) {
-  grpc_exec_ctx_sched(exec_ctx, on_handshake_done,
-                      GRPC_ERROR_CREATE("Failed to create security handshaker"),
-                      NULL);
+  grpc_closure_sched(exec_ctx, on_handshake_done,
+                     GRPC_ERROR_CREATE("Failed to create security handshaker"));
 }
 
 static const grpc_handshaker_vtable fail_handshaker_vtable = {
@@ -433,6 +438,45 @@ static grpc_handshaker *fail_handshaker_create() {
   return h;
 }
 
+//
+// handshaker factories
+//
+
+static void client_handshaker_factory_add_handshakers(
+    grpc_exec_ctx *exec_ctx, grpc_handshaker_factory *handshaker_factory,
+    const grpc_channel_args *args, grpc_handshake_manager *handshake_mgr) {
+  grpc_channel_security_connector *security_connector =
+      (grpc_channel_security_connector *)grpc_find_security_connector_in_args(
+          args);
+  grpc_channel_security_connector_add_handshakers(exec_ctx, security_connector,
+                                                  handshake_mgr);
+}
+
+static void server_handshaker_factory_add_handshakers(
+    grpc_exec_ctx *exec_ctx, grpc_handshaker_factory *hf,
+    const grpc_channel_args *args, grpc_handshake_manager *handshake_mgr) {
+  grpc_server_security_connector *security_connector =
+      (grpc_server_security_connector *)grpc_find_security_connector_in_args(
+          args);
+  grpc_server_security_connector_add_handshakers(exec_ctx, security_connector,
+                                                 handshake_mgr);
+}
+
+static void handshaker_factory_destroy(
+    grpc_exec_ctx *exec_ctx, grpc_handshaker_factory *handshaker_factory) {}
+
+static const grpc_handshaker_factory_vtable client_handshaker_factory_vtable = {
+    client_handshaker_factory_add_handshakers, handshaker_factory_destroy};
+
+static grpc_handshaker_factory client_handshaker_factory = {
+    &client_handshaker_factory_vtable};
+
+static const grpc_handshaker_factory_vtable server_handshaker_factory_vtable = {
+    server_handshaker_factory_add_handshakers, handshaker_factory_destroy};
+
+static grpc_handshaker_factory server_handshaker_factory = {
+    &server_handshaker_factory_vtable};
+
 //
 // exported functions
 //
@@ -448,3 +492,10 @@ grpc_handshaker *grpc_security_handshaker_create(
     return security_handshaker_create(exec_ctx, handshaker, connector);
   }
 }
+
+void grpc_security_register_handshaker_factories() {
+  grpc_handshaker_factory_register(false /* at_start */, HANDSHAKER_CLIENT,
+                                   &client_handshaker_factory);
+  grpc_handshaker_factory_register(false /* at_start */, HANDSHAKER_SERVER,
+                                   &server_handshaker_factory);
+}
diff --git a/src/core/lib/security/transport/security_handshaker.h b/src/core/lib/security/transport/security_handshaker.h
index 5ddbf4b4513830a4b331cf2d82be34df4894ffda..0b9eda178fdfe8e6b50d1a37808089b283822419 100644
--- a/src/core/lib/security/transport/security_handshaker.h
+++ b/src/core/lib/security/transport/security_handshaker.h
@@ -43,4 +43,7 @@ grpc_handshaker *grpc_security_handshaker_create(
     grpc_exec_ctx *exec_ctx, tsi_handshaker *handshaker,
     grpc_security_connector *connector);
 
+/// Registers security handshaker factories.
+void grpc_security_register_handshaker_factories();
+
 #endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURITY_HANDSHAKER_H */
diff --git a/src/core/lib/security/transport/server_auth_filter.c b/src/core/lib/security/transport/server_auth_filter.c
index eaa1d0720b25b8effa18c9775a27876f55e5ce85..5e98ba895dcac977f2b106c4971dfdf4c75a09ce 100644
--- a/src/core/lib/security/transport/server_auth_filter.c
+++ b/src/core/lib/security/transport/server_auth_filter.c
@@ -83,7 +83,8 @@ static grpc_metadata_array metadata_batch_to_md_array(
   return result;
 }
 
-static grpc_mdelem *remove_consumed_md(void *user_data, grpc_mdelem *md) {
+static grpc_mdelem *remove_consumed_md(grpc_exec_ctx *exec_ctx, void *user_data,
+                                       grpc_mdelem *md) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
   size_t i;
@@ -129,10 +130,10 @@ static void on_md_processing_done(
   if (status == GRPC_STATUS_OK) {
     calld->consumed_md = consumed_md;
     calld->num_consumed_md = num_consumed_md;
-    grpc_metadata_batch_filter(calld->recv_initial_metadata, remove_consumed_md,
-                               elem);
+    grpc_metadata_batch_filter(&exec_ctx, calld->recv_initial_metadata,
+                               remove_consumed_md, elem);
     grpc_metadata_array_destroy(&calld->md);
-    grpc_exec_ctx_sched(&exec_ctx, calld->on_done_recv, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(&exec_ctx, calld->on_done_recv, GRPC_ERROR_NONE);
   } else {
     grpc_slice message;
     grpc_transport_stream_op *close_op = gpr_malloc(sizeof(*close_op));
@@ -148,13 +149,13 @@ static void on_md_processing_done(
       calld->transport_op->send_message = NULL;
     }
     calld->transport_op->send_trailing_metadata = NULL;
-    close_op->on_complete = grpc_closure_create(destroy_op, close_op);
-    grpc_transport_stream_op_add_close(close_op, status, &message);
+    close_op->on_complete =
+        grpc_closure_create(destroy_op, close_op, grpc_schedule_on_exec_ctx);
+    grpc_transport_stream_op_add_close(&exec_ctx, close_op, status, &message);
     grpc_call_next_op(&exec_ctx, elem, close_op);
-    grpc_exec_ctx_sched(&exec_ctx, calld->on_done_recv,
-                        grpc_error_set_int(GRPC_ERROR_CREATE(error_details),
-                                           GRPC_ERROR_INT_GRPC_STATUS, status),
-                        NULL);
+    grpc_closure_sched(&exec_ctx, calld->on_done_recv,
+                       grpc_error_set_int(GRPC_ERROR_CREATE(error_details),
+                                          GRPC_ERROR_INT_GRPC_STATUS, status));
   }
 
   grpc_exec_ctx_finish(&exec_ctx);
@@ -174,8 +175,7 @@ static void auth_on_recv(grpc_exec_ctx *exec_ctx, void *user_data,
       return;
     }
   }
-  grpc_exec_ctx_sched(exec_ctx, calld->on_done_recv, GRPC_ERROR_REF(error),
-                      NULL);
+  grpc_closure_sched(exec_ctx, calld->on_done_recv, GRPC_ERROR_REF(error));
 }
 
 static void set_recv_ops_md_callbacks(grpc_call_element *elem,
@@ -214,7 +214,8 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
 
   /* initialize members */
   memset(calld, 0, sizeof(*calld));
-  grpc_closure_init(&calld->auth_on_recv, auth_on_recv, elem);
+  grpc_closure_init(&calld->auth_on_recv, auth_on_recv, elem,
+                    grpc_schedule_on_exec_ctx);
 
   if (args->context[GRPC_CONTEXT_SECURITY].value != NULL) {
     args->context[GRPC_CONTEXT_SECURITY].destroy(
@@ -238,9 +239,9 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               void *ignored) {}
 
 /* Constructor for channel_data */
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   grpc_auth_context *auth_context =
       grpc_find_auth_context_in_args(args->channel_args);
   grpc_server_credentials *creds =
@@ -256,6 +257,7 @@ static void init_channel_elem(grpc_exec_ctx *exec_ctx,
   chand->auth_context =
       GRPC_AUTH_CONTEXT_REF(auth_context, "server_auth_filter");
   chand->creds = grpc_server_credentials_ref(creds);
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel data */
@@ -264,7 +266,7 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   /* grab pointers to our data from the channel element */
   channel_data *chand = elem->channel_data;
   GRPC_AUTH_CONTEXT_UNREF(chand->auth_context, "server_auth_filter");
-  grpc_server_credentials_unref(chand->creds);
+  grpc_server_credentials_unref(exec_ctx, chand->creds);
 }
 
 const grpc_channel_filter grpc_server_auth_filter = {
diff --git a/src/core/lib/security/util/b64.c b/src/core/lib/security/util/b64.c
index 4892e8e6213f0eb29e6f6fc95cc8d0cecb168f7a..bbd7e335a67d51a98552983bdfc6535ff4421f54 100644
--- a/src/core/lib/security/util/b64.c
+++ b/src/core/lib/security/util/b64.c
@@ -40,6 +40,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/slice/slice_internal.h"
+
 /* --- Constants. --- */
 
 static const int8_t base64_bytes[] = {
@@ -120,8 +122,9 @@ char *grpc_base64_encode(const void *vdata, size_t data_size, int url_safe,
   return result;
 }
 
-grpc_slice grpc_base64_decode(const char *b64, int url_safe) {
-  return grpc_base64_decode_with_len(b64, strlen(b64), url_safe);
+grpc_slice grpc_base64_decode(grpc_exec_ctx *exec_ctx, const char *b64,
+                              int url_safe) {
+  return grpc_base64_decode_with_len(exec_ctx, b64, strlen(b64), url_safe);
 }
 
 static void decode_one_char(const unsigned char *codes, unsigned char *result,
@@ -182,8 +185,8 @@ static int decode_group(const unsigned char *codes, size_t num_codes,
   return 1;
 }
 
-grpc_slice grpc_base64_decode_with_len(const char *b64, size_t b64_len,
-                                       int url_safe) {
+grpc_slice grpc_base64_decode_with_len(grpc_exec_ctx *exec_ctx, const char *b64,
+                                       size_t b64_len, int url_safe) {
   grpc_slice result = grpc_slice_malloc(b64_len);
   unsigned char *current = GRPC_SLICE_START_PTR(result);
   size_t result_size = 0;
@@ -228,6 +231,6 @@ grpc_slice grpc_base64_decode_with_len(const char *b64, size_t b64_len,
   return result;
 
 fail:
-  grpc_slice_unref(result);
+  grpc_slice_unref_internal(exec_ctx, result);
   return gpr_empty_slice();
 }
diff --git a/src/core/lib/security/util/b64.h b/src/core/lib/security/util/b64.h
index 6ea0b5365be4a1a02a7f5492c747d0118f015898..d42a136f61a2a85e4e02b3c316feb6caf3a4ca45 100644
--- a/src/core/lib/security/util/b64.h
+++ b/src/core/lib/security/util/b64.h
@@ -43,10 +43,11 @@ char *grpc_base64_encode(const void *data, size_t data_size, int url_safe,
 
 /* Decodes data according to the base64 specification. Returns an empty
    slice in case of failure. */
-grpc_slice grpc_base64_decode(const char *b64, int url_safe);
+grpc_slice grpc_base64_decode(grpc_exec_ctx *exec_ctx, const char *b64,
+                              int url_safe);
 
 /* Same as above except that the length is provided by the caller. */
-grpc_slice grpc_base64_decode_with_len(const char *b64, size_t b64_len,
-                                       int url_safe);
+grpc_slice grpc_base64_decode_with_len(grpc_exec_ctx *exec_ctx, const char *b64,
+                                       size_t b64_len, int url_safe);
 
 #endif /* GRPC_CORE_LIB_SECURITY_UTIL_B64_H */
diff --git a/src/core/lib/slice/percent_encoding.c b/src/core/lib/slice/percent_encoding.c
index b9e35f1c71ecb37b19c6bf48eaf496d0e7eb7c33..c76c58d371e95e379a2cb50625eefcd81df7b971 100644
--- a/src/core/lib/slice/percent_encoding.c
+++ b/src/core/lib/slice/percent_encoding.c
@@ -35,6 +35,8 @@
 
 #include <grpc/support/log.h>
 
+#include "src/core/lib/slice/slice_internal.h"
+
 const uint8_t grpc_url_percent_encoding_unreserved_bytes[256 / 8] = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0xff, 0x03, 0xfe, 0xff, 0xff,
     0x87, 0xfe, 0xff, 0xff, 0x47, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -66,7 +68,7 @@ grpc_slice grpc_percent_encode_slice(grpc_slice slice,
   }
   // no unreserved bytes: return the string unmodified
   if (!any_reserved_bytes) {
-    return grpc_slice_ref(slice);
+    return grpc_slice_ref_internal(slice);
   }
   // second pass: actually encode
   grpc_slice out = grpc_slice_malloc(output_length);
@@ -119,7 +121,7 @@ bool grpc_strict_percent_decode_slice(grpc_slice slice_in,
     }
   }
   if (!any_percent_encoded_stuff) {
-    *slice_out = grpc_slice_ref(slice_in);
+    *slice_out = grpc_slice_ref_internal(slice_in);
     return true;
   }
   p = GRPC_SLICE_START_PTR(slice_in);
@@ -158,7 +160,7 @@ grpc_slice grpc_permissive_percent_decode_slice(grpc_slice slice_in) {
     }
   }
   if (!any_percent_encoded_stuff) {
-    return grpc_slice_ref(slice_in);
+    return grpc_slice_ref_internal(slice_in);
   }
   p = GRPC_SLICE_START_PTR(slice_in);
   grpc_slice out = grpc_slice_malloc(out_length);
diff --git a/src/core/lib/slice/slice.c b/src/core/lib/slice/slice.c
index 52977e6d9a6d8ca338f33fab2d83a129e0b7920e..76118102ece44cc2dd0a71ced563233efb828ac4 100644
--- a/src/core/lib/slice/slice.c
+++ b/src/core/lib/slice/slice.c
@@ -31,12 +31,16 @@
  *
  */
 
+#include "src/core/lib/slice/slice_internal.h"
+
 #include <grpc/slice.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
 #include <string.h>
 
+#include "src/core/lib/iomgr/exec_ctx.h"
+
 grpc_slice gpr_empty_slice(void) {
   grpc_slice out;
   out.refcount = 0;
@@ -44,25 +48,37 @@ grpc_slice gpr_empty_slice(void) {
   return out;
 }
 
-grpc_slice grpc_slice_ref(grpc_slice slice) {
+grpc_slice grpc_slice_ref_internal(grpc_slice slice) {
   if (slice.refcount) {
     slice.refcount->ref(slice.refcount);
   }
   return slice;
 }
 
-void grpc_slice_unref(grpc_slice slice) {
+void grpc_slice_unref_internal(grpc_exec_ctx *exec_ctx, grpc_slice slice) {
   if (slice.refcount) {
-    slice.refcount->unref(slice.refcount);
+    slice.refcount->unref(exec_ctx, slice.refcount);
   }
 }
 
+/* Public API */
+grpc_slice grpc_slice_ref(grpc_slice slice) {
+  return grpc_slice_ref_internal(slice);
+}
+
+/* Public API */
+void grpc_slice_unref(grpc_slice slice) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_slice_unref_internal(&exec_ctx, slice);
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
 /* grpc_slice_from_static_string support structure - a refcount that does
    nothing */
-static void noop_ref_or_unref(void *unused) {}
+static void noop_ref(void *unused) {}
+static void noop_unref(grpc_exec_ctx *exec_ctx, void *unused) {}
 
-static grpc_slice_refcount noop_refcount = {noop_ref_or_unref,
-                                            noop_ref_or_unref};
+static grpc_slice_refcount noop_refcount = {noop_ref, noop_unref};
 
 grpc_slice grpc_slice_from_static_string(const char *s) {
   grpc_slice slice;
@@ -86,7 +102,7 @@ static void new_slice_ref(void *p) {
   gpr_ref(&r->refs);
 }
 
-static void new_slice_unref(void *p) {
+static void new_slice_unref(grpc_exec_ctx *exec_ctx, void *p) {
   new_slice_refcount *r = p;
   if (gpr_unref(&r->refs)) {
     r->user_destroy(r->user_data);
@@ -131,7 +147,7 @@ static void new_with_len_ref(void *p) {
   gpr_ref(&r->refs);
 }
 
-static void new_with_len_unref(void *p) {
+static void new_with_len_unref(grpc_exec_ctx *exec_ctx, void *p) {
   new_with_len_slice_refcount *r = p;
   if (gpr_unref(&r->refs)) {
     r->user_destroy(r->user_data, r->user_length);
@@ -177,7 +193,7 @@ static void malloc_ref(void *p) {
   gpr_ref(&r->refs);
 }
 
-static void malloc_unref(void *p) {
+static void malloc_unref(grpc_exec_ctx *exec_ctx, void *p) {
   malloc_refcount *r = p;
   if (gpr_unref(&r->refs)) {
     gpr_free(r);
diff --git a/src/core/lib/slice/slice_buffer.c b/src/core/lib/slice/slice_buffer.c
index 990ef128bdfce66de23d5205559a7013f7bfeba8..08eaf4963a6e406482bf2e05b7e7de9eec230fed 100644
--- a/src/core/lib/slice/slice_buffer.c
+++ b/src/core/lib/slice/slice_buffer.c
@@ -40,6 +40,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/slice/slice_internal.h"
+
 /* grow a buffer; requires GRPC_SLICE_BUFFER_INLINE_ELEMENTS > 1 */
 #define GROW(x) (3 * (x) / 2)
 
@@ -63,13 +65,20 @@ void grpc_slice_buffer_init(grpc_slice_buffer *sb) {
   sb->slices = sb->inlined;
 }
 
-void grpc_slice_buffer_destroy(grpc_slice_buffer *sb) {
-  grpc_slice_buffer_reset_and_unref(sb);
+void grpc_slice_buffer_destroy_internal(grpc_exec_ctx *exec_ctx,
+                                        grpc_slice_buffer *sb) {
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, sb);
   if (sb->slices != sb->inlined) {
     gpr_free(sb->slices);
   }
 }
 
+void grpc_slice_buffer_destroy(grpc_slice_buffer *sb) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_slice_buffer_destroy_internal(&exec_ctx, sb);
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
 uint8_t *grpc_slice_buffer_tiny_add(grpc_slice_buffer *sb, size_t n) {
   grpc_slice *back;
   uint8_t *out;
@@ -154,17 +163,24 @@ void grpc_slice_buffer_pop(grpc_slice_buffer *sb) {
   }
 }
 
-void grpc_slice_buffer_reset_and_unref(grpc_slice_buffer *sb) {
+void grpc_slice_buffer_reset_and_unref_internal(grpc_exec_ctx *exec_ctx,
+                                                grpc_slice_buffer *sb) {
   size_t i;
 
   for (i = 0; i < sb->count; i++) {
-    grpc_slice_unref(sb->slices[i]);
+    grpc_slice_unref_internal(exec_ctx, sb->slices[i]);
   }
 
   sb->count = 0;
   sb->length = 0;
 }
 
+void grpc_slice_buffer_reset_and_unref(grpc_slice_buffer *sb) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_slice_buffer_reset_and_unref_internal(&exec_ctx, sb);
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
 void grpc_slice_buffer_swap(grpc_slice_buffer *a, grpc_slice_buffer *b) {
   GPR_SWAP(size_t, a->count, b->count);
   GPR_SWAP(size_t, a->capacity, b->capacity);
diff --git a/src/core/lib/slice/slice_internal.h b/src/core/lib/slice/slice_internal.h
new file mode 100644
index 0000000000000000000000000000000000000000..6185333ca7218582fcf2e3425b31a53d374d48b9
--- /dev/null
+++ b/src/core/lib/slice/slice_internal.h
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_INTERNAL_H
+#define GRPC_CORE_LIB_SLICE_SLICE_INTERNAL_H
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+grpc_slice grpc_slice_ref_internal(grpc_slice slice);
+void grpc_slice_unref_internal(grpc_exec_ctx *exec_ctx, grpc_slice slice);
+void grpc_slice_buffer_reset_and_unref_internal(grpc_exec_ctx *exec_ctx,
+                                                grpc_slice_buffer *sb);
+void grpc_slice_buffer_destroy_internal(grpc_exec_ctx *exec_ctx,
+                                        grpc_slice_buffer *sb);
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_INTERNAL_H */
diff --git a/src/core/lib/slice/slice_string_helpers.c b/src/core/lib/slice/slice_string_helpers.c
index 4731762eceb284b1fcb6f92ab284cda37bf58e61..839c366b32d0dcf29ffa2bdef85fbbc59c08ecb7 100644
--- a/src/core/lib/slice/slice_string_helpers.c
+++ b/src/core/lib/slice/slice_string_helpers.c
@@ -37,6 +37,7 @@
 
 #include <grpc/support/log.h>
 
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
 
 char *grpc_dump_slice(grpc_slice s, uint32_t flags) {
@@ -84,6 +85,6 @@ void grpc_slice_split(grpc_slice str, const char *sep, grpc_slice_buffer *dst) {
     grpc_slice_buffer_add_indexed(
         dst, grpc_slice_sub(str, end + sep_len, GRPC_SLICE_LENGTH(str)));
   } else { /* no sep found, add whole input */
-    grpc_slice_buffer_add_indexed(dst, grpc_slice_ref(str));
+    grpc_slice_buffer_add_indexed(dst, grpc_slice_ref_internal(str));
   }
 }
diff --git a/src/core/lib/support/string.c b/src/core/lib/support/string.c
index f10a30f0fd5f7dd14d86e52011cf976ecb017a94..d20b86f7cf71baa948195b6e325e282da902c77e 100644
--- a/src/core/lib/support/string.c
+++ b/src/core/lib/support/string.c
@@ -275,3 +275,41 @@ int gpr_stricmp(const char *a, const char *b) {
   } while (ca == cb && ca && cb);
   return ca - cb;
 }
+
+static void add_string_to_split(const char *beg, const char *end, char ***strs,
+                                size_t *nstrs, size_t *capstrs) {
+  char *out = gpr_malloc((size_t)(end - beg) + 1);
+  memcpy(out, beg, (size_t)(end - beg));
+  out[end - beg] = 0;
+  if (*nstrs == *capstrs) {
+    *capstrs = GPR_MAX(8, 2 * *capstrs);
+    *strs = gpr_realloc(*strs, sizeof(*strs) * *capstrs);
+  }
+  (*strs)[*nstrs] = out;
+  ++*nstrs;
+}
+
+void gpr_string_split(const char *input, const char *sep, char ***strs,
+                      size_t *nstrs) {
+  char *next;
+  *strs = NULL;
+  *nstrs = 0;
+  size_t capstrs = 0;
+  while ((next = strstr(input, sep))) {
+    add_string_to_split(input, next, strs, nstrs, &capstrs);
+    input = next + strlen(sep);
+  }
+  add_string_to_split(input, input + strlen(input), strs, nstrs, &capstrs);
+}
+
+void *gpr_memrchr(const void *s, int c, size_t n) {
+  if (s == NULL) return NULL;
+  char *b = (char *)s;
+  size_t i;
+  for (i = 0; i < n; i++) {
+    if (b[n - i - 1] == c) {
+      return &b[n - i - 1];
+    }
+  }
+  return NULL;
+}
diff --git a/src/core/lib/support/string.h b/src/core/lib/support/string.h
index e933e2eb468c6b9818ceaf0d1b9901bd5cbe4f37..d1c52faed4adb500f8768bb67bb3972a794c984e 100644
--- a/src/core/lib/support/string.h
+++ b/src/core/lib/support/string.h
@@ -36,8 +36,6 @@
 
 #include <stddef.h>
 
-#include <grpc/slice.h>
-#include <grpc/slice_buffer.h>
 #include <grpc/support/port_platform.h>
 
 #ifdef __cplusplus
@@ -98,6 +96,9 @@ char *gpr_strjoin(const char **strs, size_t nstrs, size_t *total_length);
 char *gpr_strjoin_sep(const char **strs, size_t nstrs, const char *sep,
                       size_t *total_length);
 
+void gpr_string_split(const char *input, const char *sep, char ***strs,
+                      size_t *nstrs);
+
 /* A vector of strings... for building up a final string one piece at a time */
 typedef struct {
   char **strs;
@@ -118,6 +119,8 @@ char *gpr_strvec_flatten(gpr_strvec *strs, size_t *total_length);
     lower(a)==lower(b), >0 if lower(a)>lower(b) */
 int gpr_stricmp(const char *a, const char *b);
 
+void *gpr_memrchr(const void *s, int c, size_t n);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/core/lib/support/tmpfile.h b/src/core/lib/support/tmpfile.h
index 8952e5ec3da764589fa3e78ed4e2f9dc88a14771..f613cf9bc8d9ee4a7eaa5891165b41a755144789 100644
--- a/src/core/lib/support/tmpfile.h
+++ b/src/core/lib/support/tmpfile.h
@@ -36,8 +36,6 @@
 
 #include <stdio.h>
 
-#include <grpc/slice.h>
-
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/src/core/lib/surface/README.md b/src/core/lib/surface/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..74cbd7113150738e06d2d81fb10836176e308ec7
--- /dev/null
+++ b/src/core/lib/surface/README.md
@@ -0,0 +1,4 @@
+# Surface
+
+Surface provides the bulk of the gRPC Core public API, and translates it into
+calls against core components.
diff --git a/src/core/lib/surface/alarm.c b/src/core/lib/surface/alarm.c
index aa9d60ee6a899442572ce9362d4023a8343018c2..e71c0ebfc57c557854098774251af31560c925c2 100644
--- a/src/core/lib/surface/alarm.c
+++ b/src/core/lib/surface/alarm.c
@@ -38,6 +38,7 @@
 
 struct grpc_alarm {
   grpc_timer alarm;
+  grpc_closure on_alarm;
   grpc_cq_completion completion;
   /** completion queue where events about this alarm will be posted */
   grpc_completion_queue *cq;
@@ -64,9 +65,11 @@ grpc_alarm *grpc_alarm_create(grpc_completion_queue *cq, gpr_timespec deadline,
   alarm->tag = tag;
 
   grpc_cq_begin_op(cq, tag);
+  grpc_closure_init(&alarm->on_alarm, alarm_cb, alarm,
+                    grpc_schedule_on_exec_ctx);
   grpc_timer_init(&exec_ctx, &alarm->alarm,
                   gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
-                  alarm_cb, alarm, gpr_now(GPR_CLOCK_MONOTONIC));
+                  &alarm->on_alarm, gpr_now(GPR_CLOCK_MONOTONIC));
   grpc_exec_ctx_finish(&exec_ctx);
   return alarm;
 }
diff --git a/src/core/lib/surface/byte_buffer.c b/src/core/lib/surface/byte_buffer.c
index d646591a65511a9db41f3836644da3ec21700fc0..c8e2fdfdad935e37d7e6da7e1ee7b04cda6ac143 100644
--- a/src/core/lib/surface/byte_buffer.c
+++ b/src/core/lib/surface/byte_buffer.c
@@ -35,6 +35,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/slice/slice_internal.h"
+
 grpc_byte_buffer *grpc_raw_byte_buffer_create(grpc_slice *slices,
                                               size_t nslices) {
   return grpc_raw_compressed_byte_buffer_create(slices, nslices,
@@ -50,7 +52,7 @@ grpc_byte_buffer *grpc_raw_compressed_byte_buffer_create(
   bb->data.raw.compression = compression;
   grpc_slice_buffer_init(&bb->data.raw.slice_buffer);
   for (i = 0; i < nslices; i++) {
-    grpc_slice_ref(slices[i]);
+    grpc_slice_ref_internal(slices[i]);
     grpc_slice_buffer_add(&bb->data.raw.slice_buffer, slices[i]);
   }
   return bb;
@@ -82,12 +84,14 @@ grpc_byte_buffer *grpc_byte_buffer_copy(grpc_byte_buffer *bb) {
 
 void grpc_byte_buffer_destroy(grpc_byte_buffer *bb) {
   if (!bb) return;
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   switch (bb->type) {
     case GRPC_BB_RAW:
-      grpc_slice_buffer_destroy(&bb->data.raw.slice_buffer);
+      grpc_slice_buffer_destroy_internal(&exec_ctx, &bb->data.raw.slice_buffer);
       break;
   }
   gpr_free(bb);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 size_t grpc_byte_buffer_length(grpc_byte_buffer *bb) {
diff --git a/src/core/lib/surface/byte_buffer_reader.c b/src/core/lib/surface/byte_buffer_reader.c
index 0089959fbb10c2a1ca4057904b4ad06800827f29..1a6ccdaddb6144d31bfcb4d3be9381eae897da48 100644
--- a/src/core/lib/surface/byte_buffer_reader.c
+++ b/src/core/lib/surface/byte_buffer_reader.c
@@ -42,6 +42,7 @@
 #include <grpc/support/log.h>
 
 #include "src/core/lib/compression/message_compress.h"
+#include "src/core/lib/slice/slice_internal.h"
 
 static int is_compressed(grpc_byte_buffer *buffer) {
   switch (buffer->type) {
@@ -56,13 +57,15 @@ static int is_compressed(grpc_byte_buffer *buffer) {
 
 int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader *reader,
                                  grpc_byte_buffer *buffer) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_slice_buffer decompressed_slices_buffer;
   reader->buffer_in = buffer;
   switch (reader->buffer_in->type) {
     case GRPC_BB_RAW:
       grpc_slice_buffer_init(&decompressed_slices_buffer);
       if (is_compressed(reader->buffer_in)) {
-        if (grpc_msg_decompress(reader->buffer_in->data.raw.compression,
+        if (grpc_msg_decompress(&exec_ctx,
+                                reader->buffer_in->data.raw.compression,
                                 &reader->buffer_in->data.raw.slice_buffer,
                                 &decompressed_slices_buffer) == 0) {
           gpr_log(GPR_ERROR,
@@ -76,13 +79,15 @@ int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader *reader,
               grpc_raw_byte_buffer_create(decompressed_slices_buffer.slices,
                                           decompressed_slices_buffer.count);
         }
-        grpc_slice_buffer_destroy(&decompressed_slices_buffer);
+        grpc_slice_buffer_destroy_internal(&exec_ctx,
+                                           &decompressed_slices_buffer);
       } else { /* not compressed, use the input buffer as output */
         reader->buffer_out = reader->buffer_in;
       }
       reader->current.index = 0;
       break;
   }
+  grpc_exec_ctx_finish(&exec_ctx);
   return 1;
 }
 
@@ -104,7 +109,8 @@ int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader *reader,
       grpc_slice_buffer *slice_buffer;
       slice_buffer = &reader->buffer_out->data.raw.slice_buffer;
       if (reader->current.index < slice_buffer->count) {
-        *slice = grpc_slice_ref(slice_buffer->slices[reader->current.index]);
+        *slice = grpc_slice_ref_internal(
+            slice_buffer->slices[reader->current.index]);
         reader->current.index += 1;
         return 1;
       }
@@ -121,12 +127,14 @@ grpc_slice grpc_byte_buffer_reader_readall(grpc_byte_buffer_reader *reader) {
   grpc_slice out_slice = grpc_slice_malloc(input_size);
   uint8_t *const outbuf = GRPC_SLICE_START_PTR(out_slice); /* just an alias */
 
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   while (grpc_byte_buffer_reader_next(reader, &in_slice) != 0) {
     const size_t slice_length = GRPC_SLICE_LENGTH(in_slice);
     memcpy(&(outbuf[bytes_read]), GRPC_SLICE_START_PTR(in_slice), slice_length);
     bytes_read += slice_length;
-    grpc_slice_unref(in_slice);
+    grpc_slice_unref_internal(&exec_ctx, in_slice);
     GPR_ASSERT(bytes_read <= input_size);
   }
+  grpc_exec_ctx_finish(&exec_ctx);
   return out_slice;
 }
diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index 8ca3cab9d57080abf0473749ffcbb126e57b7895..899e8fab3f60f35614abfeab0c86116939f9379a 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -49,6 +49,7 @@
 #include "src/core/lib/compression/algorithm_metadata.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/api_trace.h"
@@ -226,12 +227,12 @@ static void destroy_call(grpc_exec_ctx *exec_ctx, void *call_stack,
 static void receiving_slice_ready(grpc_exec_ctx *exec_ctx, void *bctlp,
                                   grpc_error *error);
 
-grpc_error *grpc_call_create(const grpc_call_create_args *args,
+grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
+                             const grpc_call_create_args *args,
                              grpc_call **out_call) {
   size_t i, j;
   grpc_channel_stack *channel_stack =
       grpc_channel_get_channel_stack(args->channel);
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_call *call;
   GPR_TIMER_BEGIN("grpc_call_create", 0);
   call = gpr_malloc(sizeof(grpc_call) + channel_stack->call_stack_size);
@@ -315,14 +316,14 @@ grpc_error *grpc_call_create(const grpc_call_create_args *args,
   GRPC_CHANNEL_INTERNAL_REF(args->channel, "call");
   /* initial refcount dropped by grpc_call_destroy */
   grpc_error *error = grpc_call_stack_init(
-      &exec_ctx, channel_stack, 1, destroy_call, call, call->context,
+      exec_ctx, channel_stack, 1, destroy_call, call, call->context,
       args->server_transport_data, path, call->start_time, send_deadline,
       CALL_STACK_FROM_CALL(call));
   if (error != GRPC_ERROR_NONE) {
     grpc_status_code status;
     const char *error_str;
     grpc_error_get_status(error, &status, &error_str);
-    close_with_status(&exec_ctx, call, status, error_str);
+    close_with_status(exec_ctx, call, status, error_str);
   }
   if (args->cq != NULL) {
     GPR_ASSERT(
@@ -338,12 +339,11 @@ grpc_error *grpc_call_create(const grpc_call_create_args *args,
   }
   if (!grpc_polling_entity_is_empty(&call->pollent)) {
     grpc_call_stack_set_pollset_or_pollset_set(
-        &exec_ctx, CALL_STACK_FROM_CALL(call), &call->pollent);
+        exec_ctx, CALL_STACK_FROM_CALL(call), &call->pollent);
   }
 
-  if (path != NULL) GRPC_MDSTR_UNREF(path);
+  if (path != NULL) GRPC_MDSTR_UNREF(exec_ctx, path);
 
-  grpc_exec_ctx_finish(&exec_ctx);
   GPR_TIMER_END("grpc_call_create", 0);
   return error;
 }
@@ -404,7 +404,7 @@ static void destroy_call(grpc_exec_ctx *exec_ctx, void *call,
   GPR_TIMER_BEGIN("destroy_call", 0);
   for (i = 0; i < 2; i++) {
     grpc_metadata_batch_destroy(
-        &c->metadata_batch[1 /* is_receiving */][i /* is_initial */]);
+        exec_ctx, &c->metadata_batch[1 /* is_receiving */][i /* is_initial */]);
   }
   if (c->receiving_stream != NULL) {
     grpc_byte_stream_destroy(exec_ctx, c->receiving_stream);
@@ -412,11 +412,11 @@ static void destroy_call(grpc_exec_ctx *exec_ctx, void *call,
   gpr_mu_destroy(&c->mu);
   for (i = 0; i < STATUS_SOURCE_COUNT; i++) {
     if (c->status[i].details) {
-      GRPC_MDSTR_UNREF(c->status[i].details);
+      GRPC_MDSTR_UNREF(exec_ctx, c->status[i].details);
     }
   }
   for (ii = 0; ii < c->send_extra_metadata_count; ii++) {
-    GRPC_MDELEM_UNREF(c->send_extra_metadata[ii].md);
+    GRPC_MDELEM_UNREF(exec_ctx, c->send_extra_metadata[ii].md);
   }
   for (i = 0; i < GRPC_CONTEXT_COUNT; i++) {
     if (c->context[i].destroy) {
@@ -446,22 +446,22 @@ static void set_status_code(grpc_call *call, status_source source,
   call->status[source].code = (grpc_status_code)status;
 }
 
-static void set_status_details(grpc_call *call, status_source source,
-                               grpc_mdstr *status) {
+static void set_status_details(grpc_exec_ctx *exec_ctx, grpc_call *call,
+                               status_source source, grpc_mdstr *status) {
   if (call->status[source].details != NULL) {
-    GRPC_MDSTR_UNREF(status);
+    GRPC_MDSTR_UNREF(exec_ctx, status);
   } else {
     call->status[source].details = status;
   }
 }
 
-static void set_status_from_error(grpc_call *call, status_source source,
-                                  grpc_error *error) {
+static void set_status_from_error(grpc_exec_ctx *exec_ctx, grpc_call *call,
+                                  status_source source, grpc_error *error) {
   grpc_status_code status;
   const char *msg;
   grpc_error_get_status(error, &status, &msg);
   set_status_code(call, source, (uint32_t)status);
-  set_status_details(call, source, grpc_mdstr_from_string(msg));
+  set_status_details(exec_ctx, call, source, grpc_mdstr_from_string(msg));
 }
 
 static void set_incoming_compression_algorithm(
@@ -495,7 +495,8 @@ uint32_t grpc_call_test_only_get_message_flags(grpc_call *call) {
 
 static void destroy_encodings_accepted_by_peer(void *p) { return; }
 
-static void set_encodings_accepted_by_peer(grpc_call *call, grpc_mdelem *mdel) {
+static void set_encodings_accepted_by_peer(grpc_exec_ctx *exec_ctx,
+                                           grpc_call *call, grpc_mdelem *mdel) {
   size_t i;
   grpc_compression_algorithm algorithm;
   grpc_slice_buffer accept_encoding_parts;
@@ -535,7 +536,7 @@ static void set_encodings_accepted_by_peer(grpc_call *call, grpc_mdelem *mdel) {
     }
   }
 
-  grpc_slice_buffer_destroy(&accept_encoding_parts);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &accept_encoding_parts);
 
   grpc_mdelem_set_user_data(
       mdel, destroy_encodings_accepted_by_peer,
@@ -593,12 +594,10 @@ static grpc_metadata *get_md_elem(grpc_metadata *metadata,
   return res;
 }
 
-static int prepare_application_metadata(grpc_call *call, int count,
-                                        grpc_metadata *metadata,
-                                        int is_trailing,
-                                        int prepend_extra_metadata,
-                                        grpc_metadata *additional_metadata,
-                                        int additional_metadata_count) {
+static int prepare_application_metadata(
+    grpc_exec_ctx *exec_ctx, grpc_call *call, int count,
+    grpc_metadata *metadata, int is_trailing, int prepend_extra_metadata,
+    grpc_metadata *additional_metadata, int additional_metadata_count) {
   int total_count = count + additional_metadata_count;
   int i;
   grpc_metadata_batch *batch =
@@ -609,7 +608,7 @@ static int prepare_application_metadata(grpc_call *call, int count,
     grpc_linked_mdelem *l = (grpc_linked_mdelem *)&md->internal_data;
     GPR_ASSERT(sizeof(grpc_linked_mdelem) == sizeof(md->internal_data));
     l->md = grpc_mdelem_from_string_and_buffer(
-        md->key, (const uint8_t *)md->value, md->value_length);
+        exec_ctx, md->key, (const uint8_t *)md->value, md->value_length);
     if (!grpc_header_key_is_legal(grpc_mdstr_as_c_string(l->md->key),
                                   GRPC_MDSTR_LENGTH(l->md->key))) {
       gpr_log(GPR_ERROR, "attempt to send invalid metadata key: %s",
@@ -629,7 +628,7 @@ static int prepare_application_metadata(grpc_call *call, int count,
       const grpc_metadata *md =
           get_md_elem(metadata, additional_metadata, j, count);
       grpc_linked_mdelem *l = (grpc_linked_mdelem *)&md->internal_data;
-      GRPC_MDELEM_UNREF(l->md);
+      GRPC_MDELEM_UNREF(exec_ctx, l->md);
     }
     return 0;
   }
@@ -794,7 +793,8 @@ static void send_cancel(grpc_exec_ctx *exec_ctx, void *tcp, grpc_error *error) {
   memset(&tc->op, 0, sizeof(tc->op));
   tc->op.cancel_error = tc->error;
   /* reuse closure to catch completion */
-  grpc_closure_init(&tc->closure, done_termination, tc);
+  grpc_closure_init(&tc->closure, done_termination, tc,
+                    grpc_schedule_on_exec_ctx);
   tc->op.on_complete = &tc->closure;
   execute_op(exec_ctx, tc->call, &tc->op);
 }
@@ -804,23 +804,25 @@ static void send_close(grpc_exec_ctx *exec_ctx, void *tcp, grpc_error *error) {
   memset(&tc->op, 0, sizeof(tc->op));
   tc->op.close_error = tc->error;
   /* reuse closure to catch completion */
-  grpc_closure_init(&tc->closure, done_termination, tc);
+  grpc_closure_init(&tc->closure, done_termination, tc,
+                    grpc_schedule_on_exec_ctx);
   tc->op.on_complete = &tc->closure;
   execute_op(exec_ctx, tc->call, &tc->op);
 }
 
 static grpc_call_error terminate_with_status(grpc_exec_ctx *exec_ctx,
                                              termination_closure *tc) {
-  set_status_from_error(tc->call, STATUS_FROM_API_OVERRIDE, tc->error);
+  set_status_from_error(exec_ctx, tc->call, STATUS_FROM_API_OVERRIDE,
+                        tc->error);
 
   if (tc->type == TC_CANCEL) {
-    grpc_closure_init(&tc->closure, send_cancel, tc);
+    grpc_closure_init(&tc->closure, send_cancel, tc, grpc_schedule_on_exec_ctx);
     GRPC_CALL_INTERNAL_REF(tc->call, "cancel");
   } else if (tc->type == TC_CLOSE) {
-    grpc_closure_init(&tc->closure, send_close, tc);
+    grpc_closure_init(&tc->closure, send_close, tc, grpc_schedule_on_exec_ctx);
     GRPC_CALL_INTERNAL_REF(tc->call, "close");
   }
-  grpc_exec_ctx_sched(exec_ctx, &tc->closure, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, &tc->closure, GRPC_ERROR_NONE);
   return GRPC_CALL_OK;
 }
 
@@ -928,7 +930,8 @@ static grpc_compression_algorithm decode_compression(grpc_mdelem *md) {
   return algorithm;
 }
 
-static grpc_mdelem *recv_common_filter(grpc_call *call, grpc_mdelem *elem) {
+static grpc_mdelem *recv_common_filter(grpc_exec_ctx *exec_ctx, grpc_call *call,
+                                       grpc_mdelem *elem) {
   if (elem->key == GRPC_MDSTR_GRPC_STATUS) {
     GPR_TIMER_BEGIN("status", 0);
     set_status_code(call, STATUS_FROM_WIRE, decode_status(elem));
@@ -936,7 +939,8 @@ static grpc_mdelem *recv_common_filter(grpc_call *call, grpc_mdelem *elem) {
     return NULL;
   } else if (elem->key == GRPC_MDSTR_GRPC_MESSAGE) {
     GPR_TIMER_BEGIN("status-details", 0);
-    set_status_details(call, STATUS_FROM_WIRE, GRPC_MDSTR_REF(elem->value));
+    set_status_details(exec_ctx, call, STATUS_FROM_WIRE,
+                       GRPC_MDSTR_REF(elem->value));
     GPR_TIMER_END("status-details", 0);
     return NULL;
   }
@@ -962,9 +966,10 @@ static grpc_mdelem *publish_app_metadata(grpc_call *call, grpc_mdelem *elem,
   return elem;
 }
 
-static grpc_mdelem *recv_initial_filter(void *callp, grpc_mdelem *elem) {
-  grpc_call *call = callp;
-  elem = recv_common_filter(call, elem);
+static grpc_mdelem *recv_initial_filter(grpc_exec_ctx *exec_ctx, void *args,
+                                        grpc_mdelem *elem) {
+  grpc_call *call = args;
+  elem = recv_common_filter(exec_ctx, call, elem);
   if (elem == NULL) {
     return NULL;
   } else if (elem->key == GRPC_MDSTR_GRPC_ENCODING) {
@@ -974,7 +979,7 @@ static grpc_mdelem *recv_initial_filter(void *callp, grpc_mdelem *elem) {
     return NULL;
   } else if (elem->key == GRPC_MDSTR_GRPC_ACCEPT_ENCODING) {
     GPR_TIMER_BEGIN("encodings_accepted_by_peer", 0);
-    set_encodings_accepted_by_peer(call, elem);
+    set_encodings_accepted_by_peer(exec_ctx, call, elem);
     GPR_TIMER_END("encodings_accepted_by_peer", 0);
     return NULL;
   } else {
@@ -982,9 +987,10 @@ static grpc_mdelem *recv_initial_filter(void *callp, grpc_mdelem *elem) {
   }
 }
 
-static grpc_mdelem *recv_trailing_filter(void *callp, grpc_mdelem *elem) {
-  grpc_call *call = callp;
-  elem = recv_common_filter(call, elem);
+static grpc_mdelem *recv_trailing_filter(grpc_exec_ctx *exec_ctx, void *args,
+                                         grpc_mdelem *elem) {
+  grpc_call *call = args;
+  elem = recv_common_filter(exec_ctx, call, elem);
   if (elem == NULL) {
     return NULL;
   } else {
@@ -1138,8 +1144,8 @@ static void process_data_after_md(grpc_exec_ctx *exec_ctx,
     } else {
       *call->receiving_buffer = grpc_raw_byte_buffer_create(NULL, 0);
     }
-    grpc_closure_init(&call->receiving_slice_ready, receiving_slice_ready,
-                      bctl);
+    grpc_closure_init(&call->receiving_slice_ready, receiving_slice_ready, bctl,
+                      grpc_schedule_on_exec_ctx);
     continue_receiving_slices(exec_ctx, bctl);
   }
 }
@@ -1234,7 +1240,7 @@ static void receiving_initial_metadata_ready(grpc_exec_ctx *exec_ctx,
   if (error == GRPC_ERROR_NONE) {
     grpc_metadata_batch *md =
         &call->metadata_batch[1 /* is_receiving */][0 /* is_trailing */];
-    grpc_metadata_batch_filter(md, recv_initial_filter, call);
+    grpc_metadata_batch_filter(exec_ctx, md, recv_initial_filter, call);
 
     GPR_TIMER_BEGIN("validate_filtered_metadata", 0);
     validate_filtered_metadata(exec_ctx, bctl);
@@ -1251,9 +1257,10 @@ static void receiving_initial_metadata_ready(grpc_exec_ctx *exec_ctx,
   call->has_initial_md_been_received = true;
   if (call->saved_receiving_stream_ready_bctlp != NULL) {
     grpc_closure *saved_rsr_closure = grpc_closure_create(
-        receiving_stream_ready, call->saved_receiving_stream_ready_bctlp);
+        receiving_stream_ready, call->saved_receiving_stream_ready_bctlp,
+        grpc_schedule_on_exec_ctx);
     call->saved_receiving_stream_ready_bctlp = NULL;
-    grpc_exec_ctx_sched(exec_ctx, saved_rsr_closure, error, NULL);
+    grpc_closure_sched(exec_ctx, saved_rsr_closure, error);
   }
 
   gpr_mu_unlock(&call->mu);
@@ -1278,14 +1285,15 @@ static void finish_batch(grpc_exec_ctx *exec_ctx, void *bctlp,
   intptr_t status;
   if (error != GRPC_ERROR_NONE &&
       grpc_error_get_int(error, GRPC_ERROR_INT_GRPC_STATUS, &status)) {
-    set_status_from_error(call, STATUS_FROM_CORE, error);
+    set_status_from_error(exec_ctx, call, STATUS_FROM_CORE, error);
   }
 
   if (bctl->send_initial_metadata) {
     if (error != GRPC_ERROR_NONE) {
-      set_status_from_error(call, STATUS_FROM_CORE, error);
+      set_status_from_error(exec_ctx, call, STATUS_FROM_CORE, error);
     }
     grpc_metadata_batch_destroy(
+        exec_ctx,
         &call->metadata_batch[0 /* is_receiving */][0 /* is_trailing */]);
   }
   if (bctl->send_message) {
@@ -1293,12 +1301,13 @@ static void finish_batch(grpc_exec_ctx *exec_ctx, void *bctlp,
   }
   if (bctl->send_final_op) {
     grpc_metadata_batch_destroy(
+        exec_ctx,
         &call->metadata_batch[0 /* is_receiving */][1 /* is_trailing */]);
   }
   if (bctl->recv_final_op) {
     grpc_metadata_batch *md =
         &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */];
-    grpc_metadata_batch_filter(md, recv_trailing_filter, call);
+    grpc_metadata_batch_filter(exec_ctx, md, recv_trailing_filter, call);
 
     call->received_final_op = true;
     /* propagate cancellation to any interested children */
@@ -1435,7 +1444,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         bctl->send_initial_metadata = 1;
         call->sent_initial_metadata = 1;
         if (!prepare_application_metadata(
-                call, (int)op->data.send_initial_metadata.count,
+                exec_ctx, call, (int)op->data.send_initial_metadata.count,
                 op->data.send_initial_metadata.metadata, 0, call->is_client,
                 &compression_md, (int)additional_metadata_count)) {
           error = GRPC_CALL_ERROR_INVALID_METADATA;
@@ -1515,15 +1524,15 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         call->sent_final_op = 1;
         call->send_extra_metadata_count = 1;
         call->send_extra_metadata[0].md = grpc_channel_get_reffed_status_elem(
-            call->channel, op->data.send_status_from_server.status);
+            exec_ctx, call->channel, op->data.send_status_from_server.status);
         if (op->data.send_status_from_server.status_details != NULL) {
           call->send_extra_metadata[1].md = grpc_mdelem_from_metadata_strings(
-              GRPC_MDSTR_GRPC_MESSAGE,
+              exec_ctx, GRPC_MDSTR_GRPC_MESSAGE,
               grpc_mdstr_from_string(
                   op->data.send_status_from_server.status_details));
           call->send_extra_metadata_count++;
           set_status_details(
-              call, STATUS_FROM_API_OVERRIDE,
+              exec_ctx, call, STATUS_FROM_API_OVERRIDE,
               GRPC_MDSTR_REF(call->send_extra_metadata[1].md->value));
         }
         if (op->data.send_status_from_server.status != GRPC_STATUS_OK) {
@@ -1531,7 +1540,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
                           (uint32_t)op->data.send_status_from_server.status);
         }
         if (!prepare_application_metadata(
-                call,
+                exec_ctx, call,
                 (int)op->data.send_status_from_server.trailing_metadata_count,
                 op->data.send_status_from_server.trailing_metadata, 1, 1, NULL,
                 0)) {
@@ -1558,7 +1567,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         call->received_initial_metadata = 1;
         call->buffered_metadata[0] = op->data.recv_initial_metadata;
         grpc_closure_init(&call->receiving_initial_metadata_ready,
-                          receiving_initial_metadata_ready, bctl);
+                          receiving_initial_metadata_ready, bctl,
+                          grpc_schedule_on_exec_ctx);
         bctl->recv_initial_metadata = 1;
         stream_op->recv_initial_metadata =
             &call->metadata_batch[1 /* is_receiving */][0 /* is_trailing */];
@@ -1581,7 +1591,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         call->receiving_buffer = op->data.recv_message;
         stream_op->recv_message = &call->receiving_stream;
         grpc_closure_init(&call->receiving_stream_ready, receiving_stream_ready,
-                          bctl);
+                          bctl, grpc_schedule_on_exec_ctx);
         stream_op->recv_message_ready = &call->receiving_stream_ready;
         num_completion_callbacks_needed++;
         break;
@@ -1646,7 +1656,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
   gpr_ref_init(&bctl->steps_to_complete, num_completion_callbacks_needed);
 
   stream_op->context = call->context;
-  grpc_closure_init(&bctl->finish_batch, finish_batch, bctl);
+  grpc_closure_init(&bctl->finish_batch, finish_batch, bctl,
+                    grpc_schedule_on_exec_ctx);
   stream_op->on_complete = &bctl->finish_batch;
   gpr_mu_unlock(&call->mu);
 
@@ -1660,7 +1671,7 @@ done_with_error:
   /* reverse any mutations that occured */
   if (bctl->send_initial_metadata) {
     call->sent_initial_metadata = 0;
-    grpc_metadata_batch_clear(&call->metadata_batch[0][0]);
+    grpc_metadata_batch_clear(exec_ctx, &call->metadata_batch[0][0]);
   }
   if (bctl->send_message) {
     call->sending_message = 0;
@@ -1668,7 +1679,7 @@ done_with_error:
   }
   if (bctl->send_final_op) {
     call->sent_final_op = 0;
-    grpc_metadata_batch_clear(&call->metadata_batch[0][1]);
+    grpc_metadata_batch_clear(exec_ctx, &call->metadata_batch[0][1]);
   }
   if (bctl->recv_initial_metadata) {
     call->received_initial_metadata = 0;
diff --git a/src/core/lib/surface/call.h b/src/core/lib/surface/call.h
index 18af41b7fbb40dc83b53fa257f54fabe592117ba..233340c3298343982aea81d60e14530e0de1b8b1 100644
--- a/src/core/lib/surface/call.h
+++ b/src/core/lib/surface/call.h
@@ -70,7 +70,8 @@ typedef struct grpc_call_create_args {
 /* Create a new call based on \a args.
    Regardless of success or failure, always returns a valid new call into *call
    */
-grpc_error *grpc_call_create(const grpc_call_create_args *args,
+grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
+                             const grpc_call_create_args *args,
                              grpc_call **call);
 
 void grpc_call_set_completion_queue(grpc_exec_ctx *exec_ctx, grpc_call *call,
diff --git a/src/core/lib/surface/channel.c b/src/core/lib/surface/channel.c
index 1389df688625fdc49160730e9e5b6b5314de4664..b87295786e5dcdc18457b30706aa0e50c63028c6 100644
--- a/src/core/lib/surface/channel.c
+++ b/src/core/lib/surface/channel.c
@@ -86,87 +86,91 @@ grpc_channel *grpc_channel_create(grpc_exec_ctx *exec_ctx, const char *target,
                                   const grpc_channel_args *input_args,
                                   grpc_channel_stack_type channel_stack_type,
                                   grpc_transport *optional_transport) {
-  bool is_client = grpc_channel_stack_type_is_client(channel_stack_type);
-
   grpc_channel_stack_builder *builder = grpc_channel_stack_builder_create();
-  grpc_channel_stack_builder_set_channel_arguments(builder, input_args);
+  grpc_channel_stack_builder_set_channel_arguments(exec_ctx, builder,
+                                                   input_args);
   grpc_channel_stack_builder_set_target(builder, target);
   grpc_channel_stack_builder_set_transport(builder, optional_transport);
-  grpc_channel *channel;
-  grpc_channel_args *args;
   if (!grpc_channel_init_create_stack(exec_ctx, builder, channel_stack_type)) {
-    grpc_channel_stack_builder_destroy(builder);
+    grpc_channel_stack_builder_destroy(exec_ctx, builder);
     return NULL;
-  } else {
-    args = grpc_channel_args_copy(
-        grpc_channel_stack_builder_get_channel_arguments(builder));
-    channel = grpc_channel_stack_builder_finish(
-        exec_ctx, builder, sizeof(grpc_channel), 1, destroy_channel, NULL);
+  }
+  grpc_channel_args *args = grpc_channel_args_copy(
+      grpc_channel_stack_builder_get_channel_arguments(builder));
+  grpc_channel *channel;
+  grpc_error *error = grpc_channel_stack_builder_finish(
+      exec_ctx, builder, sizeof(grpc_channel), 1, destroy_channel, NULL,
+      (void **)&channel);
+  if (error != GRPC_ERROR_NONE) {
+    const char *msg = grpc_error_string(error);
+    gpr_log(GPR_ERROR, "channel stack builder failed: %s", msg);
+    grpc_error_free_string(msg);
+    GRPC_ERROR_UNREF(error);
+    goto done;
   }
 
   memset(channel, 0, sizeof(*channel));
   channel->target = gpr_strdup(target);
-  channel->is_client = is_client;
+  channel->is_client = grpc_channel_stack_type_is_client(channel_stack_type);
   gpr_mu_init(&channel->registered_call_mu);
   channel->registered_calls = NULL;
 
   grpc_compression_options_init(&channel->compression_options);
-  if (args) {
-    for (size_t i = 0; i < args->num_args; i++) {
-      if (0 == strcmp(args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY)) {
-        if (args->args[i].type != GRPC_ARG_STRING) {
-          gpr_log(GPR_ERROR, "%s ignored: it must be a string",
-                  GRPC_ARG_DEFAULT_AUTHORITY);
-        } else {
-          if (channel->default_authority) {
-            /* setting this takes precedence over anything else */
-            GRPC_MDELEM_UNREF(channel->default_authority);
-          }
-          channel->default_authority = grpc_mdelem_from_strings(
-              ":authority", args->args[i].value.string);
+
+  for (size_t i = 0; i < args->num_args; i++) {
+    if (0 == strcmp(args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY)) {
+      if (args->args[i].type != GRPC_ARG_STRING) {
+        gpr_log(GPR_ERROR, "%s ignored: it must be a string",
+                GRPC_ARG_DEFAULT_AUTHORITY);
+      } else {
+        if (channel->default_authority) {
+          /* setting this takes precedence over anything else */
+          GRPC_MDELEM_UNREF(exec_ctx, channel->default_authority);
         }
-      } else if (0 ==
-                 strcmp(args->args[i].key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) {
-        if (args->args[i].type != GRPC_ARG_STRING) {
-          gpr_log(GPR_ERROR, "%s ignored: it must be a string",
+        channel->default_authority = grpc_mdelem_from_strings(
+            exec_ctx, ":authority", args->args[i].value.string);
+      }
+    } else if (0 ==
+               strcmp(args->args[i].key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) {
+      if (args->args[i].type != GRPC_ARG_STRING) {
+        gpr_log(GPR_ERROR, "%s ignored: it must be a string",
+                GRPC_SSL_TARGET_NAME_OVERRIDE_ARG);
+      } else {
+        if (channel->default_authority) {
+          /* other ways of setting this (notably ssl) take precedence */
+          gpr_log(GPR_ERROR,
+                  "%s ignored: default host already set some other way",
                   GRPC_SSL_TARGET_NAME_OVERRIDE_ARG);
         } else {
-          if (channel->default_authority) {
-            /* other ways of setting this (notably ssl) take precedence */
-            gpr_log(GPR_ERROR,
-                    "%s ignored: default host already set some other way",
-                    GRPC_SSL_TARGET_NAME_OVERRIDE_ARG);
-          } else {
-            channel->default_authority = grpc_mdelem_from_strings(
-                ":authority", args->args[i].value.string);
-          }
+          channel->default_authority = grpc_mdelem_from_strings(
+              exec_ctx, ":authority", args->args[i].value.string);
         }
-      } else if (0 == strcmp(args->args[i].key,
-                             GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) {
-        channel->compression_options.default_level.is_set = true;
-        GPR_ASSERT(args->args[i].value.integer >= 0 &&
-                   args->args[i].value.integer < GRPC_COMPRESS_LEVEL_COUNT);
-        channel->compression_options.default_level.level =
-            (grpc_compression_level)args->args[i].value.integer;
-      } else if (0 == strcmp(args->args[i].key,
-                             GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM)) {
-        channel->compression_options.default_algorithm.is_set = true;
-        GPR_ASSERT(args->args[i].value.integer >= 0 &&
-                   args->args[i].value.integer <
-                       GRPC_COMPRESS_ALGORITHMS_COUNT);
-        channel->compression_options.default_algorithm.algorithm =
-            (grpc_compression_algorithm)args->args[i].value.integer;
-      } else if (0 ==
-                 strcmp(args->args[i].key,
-                        GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET)) {
-        channel->compression_options.enabled_algorithms_bitset =
-            (uint32_t)args->args[i].value.integer |
-            0x1; /* always support no compression */
       }
+    } else if (0 == strcmp(args->args[i].key,
+                           GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) {
+      channel->compression_options.default_level.is_set = true;
+      GPR_ASSERT(args->args[i].value.integer >= 0 &&
+                 args->args[i].value.integer < GRPC_COMPRESS_LEVEL_COUNT);
+      channel->compression_options.default_level.level =
+          (grpc_compression_level)args->args[i].value.integer;
+    } else if (0 == strcmp(args->args[i].key,
+                           GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM)) {
+      channel->compression_options.default_algorithm.is_set = true;
+      GPR_ASSERT(args->args[i].value.integer >= 0 &&
+                 args->args[i].value.integer < GRPC_COMPRESS_ALGORITHMS_COUNT);
+      channel->compression_options.default_algorithm.algorithm =
+          (grpc_compression_algorithm)args->args[i].value.integer;
+    } else if (0 ==
+               strcmp(args->args[i].key,
+                      GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET)) {
+      channel->compression_options.enabled_algorithms_bitset =
+          (uint32_t)args->args[i].value.integer |
+          0x1; /* always support no compression */
     }
-    grpc_channel_args_destroy(args);
   }
 
+done:
+  grpc_channel_args_destroy(exec_ctx, args);
   return channel;
 }
 
@@ -185,10 +189,10 @@ void grpc_channel_get_info(grpc_channel *channel,
 }
 
 static grpc_call *grpc_channel_create_call_internal(
-    grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask,
-    grpc_completion_queue *cq, grpc_pollset_set *pollset_set_alternative,
-    grpc_mdelem *path_mdelem, grpc_mdelem *authority_mdelem,
-    gpr_timespec deadline) {
+    grpc_exec_ctx *exec_ctx, grpc_channel *channel, grpc_call *parent_call,
+    uint32_t propagation_mask, grpc_completion_queue *cq,
+    grpc_pollset_set *pollset_set_alternative, grpc_mdelem *path_mdelem,
+    grpc_mdelem *authority_mdelem, gpr_timespec deadline) {
   grpc_mdelem *send_metadata[2];
   size_t num_metadata = 0;
 
@@ -215,7 +219,7 @@ static grpc_call *grpc_channel_create_call_internal(
   args.send_deadline = deadline;
 
   grpc_call *call;
-  GRPC_LOG_IF_ERROR("call_create", grpc_call_create(&args, &call));
+  GRPC_LOG_IF_ERROR("call_create", grpc_call_create(exec_ctx, &args, &call));
   return call;
 }
 
@@ -236,26 +240,30 @@ grpc_call *grpc_channel_create_call(grpc_channel *channel,
       (channel, parent_call, (unsigned)propagation_mask, cq, method, host,
        deadline.tv_sec, deadline.tv_nsec, (int)deadline.clock_type, reserved));
   GPR_ASSERT(!reserved);
-  return grpc_channel_create_call_internal(
-      channel, parent_call, propagation_mask, cq, NULL,
-      grpc_mdelem_from_metadata_strings(GRPC_MDSTR_PATH,
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_call *call = grpc_channel_create_call_internal(
+      &exec_ctx, channel, parent_call, propagation_mask, cq, NULL,
+      grpc_mdelem_from_metadata_strings(&exec_ctx, GRPC_MDSTR_PATH,
                                         grpc_mdstr_from_string(method)),
-      host ? grpc_mdelem_from_metadata_strings(GRPC_MDSTR_AUTHORITY,
+      host ? grpc_mdelem_from_metadata_strings(&exec_ctx, GRPC_MDSTR_AUTHORITY,
                                                grpc_mdstr_from_string(host))
            : NULL,
       deadline);
+  grpc_exec_ctx_finish(&exec_ctx);
+  return call;
 }
 
 grpc_call *grpc_channel_create_pollset_set_call(
-    grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask,
-    grpc_pollset_set *pollset_set, const char *method, const char *host,
-    gpr_timespec deadline, void *reserved) {
+    grpc_exec_ctx *exec_ctx, grpc_channel *channel, grpc_call *parent_call,
+    uint32_t propagation_mask, grpc_pollset_set *pollset_set,
+    const char *method, const char *host, gpr_timespec deadline,
+    void *reserved) {
   GPR_ASSERT(!reserved);
   return grpc_channel_create_call_internal(
-      channel, parent_call, propagation_mask, NULL, pollset_set,
-      grpc_mdelem_from_metadata_strings(GRPC_MDSTR_PATH,
+      exec_ctx, channel, parent_call, propagation_mask, NULL, pollset_set,
+      grpc_mdelem_from_metadata_strings(exec_ctx, GRPC_MDSTR_PATH,
                                         grpc_mdstr_from_string(method)),
-      host ? grpc_mdelem_from_metadata_strings(GRPC_MDSTR_AUTHORITY,
+      host ? grpc_mdelem_from_metadata_strings(exec_ctx, GRPC_MDSTR_AUTHORITY,
                                                grpc_mdstr_from_string(host))
            : NULL,
       deadline);
@@ -268,15 +276,18 @@ void *grpc_channel_register_call(grpc_channel *channel, const char *method,
       "grpc_channel_register_call(channel=%p, method=%s, host=%s, reserved=%p)",
       4, (channel, method, host, reserved));
   GPR_ASSERT(!reserved);
-  rc->path = grpc_mdelem_from_metadata_strings(GRPC_MDSTR_PATH,
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  rc->path = grpc_mdelem_from_metadata_strings(&exec_ctx, GRPC_MDSTR_PATH,
                                                grpc_mdstr_from_string(method));
-  rc->authority = host ? grpc_mdelem_from_metadata_strings(
-                             GRPC_MDSTR_AUTHORITY, grpc_mdstr_from_string(host))
-                       : NULL;
+  rc->authority =
+      host ? grpc_mdelem_from_metadata_strings(&exec_ctx, GRPC_MDSTR_AUTHORITY,
+                                               grpc_mdstr_from_string(host))
+           : NULL;
   gpr_mu_lock(&channel->registered_call_mu);
   rc->next = channel->registered_calls;
   channel->registered_calls = rc;
   gpr_mu_unlock(&channel->registered_call_mu);
+  grpc_exec_ctx_finish(&exec_ctx);
   return rc;
 }
 
@@ -296,10 +307,13 @@ grpc_call *grpc_channel_create_registered_call(
           registered_call_handle, deadline.tv_sec, deadline.tv_nsec,
           (int)deadline.clock_type, reserved));
   GPR_ASSERT(!reserved);
-  return grpc_channel_create_call_internal(
-      channel, parent_call, propagation_mask, completion_queue, NULL,
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_call *call = grpc_channel_create_call_internal(
+      &exec_ctx, channel, parent_call, propagation_mask, completion_queue, NULL,
       GRPC_MDELEM_REF(rc->path),
       rc->authority ? GRPC_MDELEM_REF(rc->authority) : NULL, deadline);
+  grpc_exec_ctx_finish(&exec_ctx);
+  return call;
 }
 
 #ifdef GRPC_STREAM_REFCOUNT_DEBUG
@@ -325,14 +339,14 @@ static void destroy_channel(grpc_exec_ctx *exec_ctx, void *arg,
   while (channel->registered_calls) {
     registered_call *rc = channel->registered_calls;
     channel->registered_calls = rc->next;
-    GRPC_MDELEM_UNREF(rc->path);
+    GRPC_MDELEM_UNREF(exec_ctx, rc->path);
     if (rc->authority) {
-      GRPC_MDELEM_UNREF(rc->authority);
+      GRPC_MDELEM_UNREF(exec_ctx, rc->authority);
     }
     gpr_free(rc);
   }
   if (channel->default_authority != NULL) {
-    GRPC_MDELEM_UNREF(channel->default_authority);
+    GRPC_MDELEM_UNREF(exec_ctx, channel->default_authority);
   }
   gpr_mu_destroy(&channel->registered_call_mu);
   gpr_free(channel->target);
@@ -362,7 +376,8 @@ grpc_compression_options grpc_channel_compression_options(
   return channel->compression_options;
 }
 
-grpc_mdelem *grpc_channel_get_reffed_status_elem(grpc_channel *channel, int i) {
+grpc_mdelem *grpc_channel_get_reffed_status_elem(grpc_exec_ctx *exec_ctx,
+                                                 grpc_channel *channel, int i) {
   char tmp[GPR_LTOA_MIN_BUFSIZE];
   switch (i) {
     case 0:
@@ -373,6 +388,6 @@ grpc_mdelem *grpc_channel_get_reffed_status_elem(grpc_channel *channel, int i) {
       return GRPC_MDELEM_GRPC_STATUS_2;
   }
   gpr_ltoa(i, tmp);
-  return grpc_mdelem_from_metadata_strings(GRPC_MDSTR_GRPC_STATUS,
+  return grpc_mdelem_from_metadata_strings(exec_ctx, GRPC_MDSTR_GRPC_STATUS,
                                            grpc_mdstr_from_string(tmp));
 }
diff --git a/src/core/lib/surface/channel.h b/src/core/lib/surface/channel.h
index 23cc8656cabe419821e470fc22e7f3ca70f4ff8b..2ebadb7a150db4045470559f3043dc3577226407 100644
--- a/src/core/lib/surface/channel.h
+++ b/src/core/lib/surface/channel.h
@@ -51,9 +51,10 @@ grpc_channel *grpc_channel_create(grpc_exec_ctx *exec_ctx, const char *target,
     properties from the server call to this new client call, depending on the
     value of \a propagation_mask (see propagation_bits.h for possible values) */
 grpc_call *grpc_channel_create_pollset_set_call(
-    grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask,
-    grpc_pollset_set *pollset_set, const char *method, const char *host,
-    gpr_timespec deadline, void *reserved);
+    grpc_exec_ctx *exec_ctx, grpc_channel *channel, grpc_call *parent_call,
+    uint32_t propagation_mask, grpc_pollset_set *pollset_set,
+    const char *method, const char *host, gpr_timespec deadline,
+    void *reserved);
 
 /** Get a (borrowed) pointer to this channels underlying channel stack */
 grpc_channel_stack *grpc_channel_get_channel_stack(grpc_channel *channel);
@@ -62,7 +63,8 @@ grpc_channel_stack *grpc_channel_get_channel_stack(grpc_channel *channel);
     status_code.
 
     The returned elem is owned by the caller. */
-grpc_mdelem *grpc_channel_get_reffed_status_elem(grpc_channel *channel,
+grpc_mdelem *grpc_channel_get_reffed_status_elem(grpc_exec_ctx *exec_ctx,
+                                                 grpc_channel *channel,
                                                  int status_code);
 
 #ifdef GRPC_STREAM_REFCOUNT_DEBUG
diff --git a/src/core/lib/surface/channel_init.c b/src/core/lib/surface/channel_init.c
index 0627b3447918bdbad62db02b6cda026a26e0a266..7acb444d9b1792728eeeb47664325a2cb1cc2341 100644
--- a/src/core/lib/surface/channel_init.c
+++ b/src/core/lib/surface/channel_init.c
@@ -131,7 +131,7 @@ bool grpc_channel_init_create_stack(grpc_exec_ctx *exec_ctx,
 
   for (size_t i = 0; i < g_slots[type].num_slots; i++) {
     const stage_slot *slot = &g_slots[type].slots[i];
-    if (!slot->fn(builder, slot->arg)) {
+    if (!slot->fn(exec_ctx, builder, slot->arg)) {
       return false;
     }
   }
diff --git a/src/core/lib/surface/channel_init.h b/src/core/lib/surface/channel_init.h
index b53f2aefb92dbe1be2d35ccf3dbb37880191b7c6..411f5eae18cc61a410ea5c15eab8909b5bbf18fe 100644
--- a/src/core/lib/surface/channel_init.h
+++ b/src/core/lib/surface/channel_init.h
@@ -51,7 +51,8 @@ extern "C" {
 
 /// One stage of mutation: call functions against \a builder to influence the
 /// finally constructed channel stack
-typedef bool (*grpc_channel_init_stage)(grpc_channel_stack_builder *builder,
+typedef bool (*grpc_channel_init_stage)(grpc_exec_ctx *exec_ctx,
+                                        grpc_channel_stack_builder *builder,
                                         void *arg);
 
 /// Global initialization of the system
diff --git a/src/core/lib/surface/channel_ping.c b/src/core/lib/surface/channel_ping.c
index 0d2f01a6492cf4e712473b65cda74c6c83387f8e..e68febdddf6887f05cf7ed743e79379de350d35e 100644
--- a/src/core/lib/surface/channel_ping.c
+++ b/src/core/lib/surface/channel_ping.c
@@ -71,7 +71,7 @@ void grpc_channel_ping(grpc_channel *channel, grpc_completion_queue *cq,
   GPR_ASSERT(reserved == NULL);
   pr->tag = tag;
   pr->cq = cq;
-  grpc_closure_init(&pr->closure, ping_done, pr);
+  grpc_closure_init(&pr->closure, ping_done, pr, grpc_schedule_on_exec_ctx);
   op->send_ping = &pr->closure;
   op->bind_pollset = grpc_cq_pollset(cq);
   grpc_cq_begin_op(cq, tag);
diff --git a/src/core/lib/surface/completion_queue.c b/src/core/lib/surface/completion_queue.c
index 184c1a1a16a61b284c64f95ca4b217c20a52a2c9..4613c9021ee91044a721d191bc11ccc87e2229ec 100644
--- a/src/core/lib/surface/completion_queue.c
+++ b/src/core/lib/surface/completion_queue.c
@@ -168,7 +168,8 @@ grpc_completion_queue *grpc_completion_queue_create(void *reserved) {
 #ifndef NDEBUG
   cc->outstanding_tag_count = 0;
 #endif
-  grpc_closure_init(&cc->pollset_shutdown_done, on_pollset_shutdown_done, cc);
+  grpc_closure_init(&cc->pollset_shutdown_done, on_pollset_shutdown_done, cc,
+                    grpc_schedule_on_exec_ctx);
 
   GPR_TIMER_END("grpc_completion_queue_create", 0);
 
diff --git a/src/core/lib/surface/init.c b/src/core/lib/surface/init.c
index 7903f57a68c95f9513f27a8c47011544f5902177..f61bf1582e56728b22f4998f31fa088e92a7d458 100644
--- a/src/core/lib/surface/init.c
+++ b/src/core/lib/surface/init.c
@@ -44,6 +44,7 @@
 #include "src/core/lib/channel/compress_filter.h"
 #include "src/core/lib/channel/connected_channel.h"
 #include "src/core/lib/channel/deadline_filter.h"
+#include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/channel/http_client_filter.h"
 #include "src/core/lib/channel/http_server_filter.h"
 #include "src/core/lib/channel/message_size_filter.h"
@@ -80,17 +81,20 @@ static void do_basic_init(void) {
   g_initializations = 0;
 }
 
-static bool append_filter(grpc_channel_stack_builder *builder, void *arg) {
+static bool append_filter(grpc_exec_ctx *exec_ctx,
+                          grpc_channel_stack_builder *builder, void *arg) {
   return grpc_channel_stack_builder_append_filter(
       builder, (const grpc_channel_filter *)arg, NULL, NULL);
 }
 
-static bool prepend_filter(grpc_channel_stack_builder *builder, void *arg) {
+static bool prepend_filter(grpc_exec_ctx *exec_ctx,
+                           grpc_channel_stack_builder *builder, void *arg) {
   return grpc_channel_stack_builder_prepend_filter(
       builder, (const grpc_channel_filter *)arg, NULL, NULL);
 }
 
-static bool maybe_add_http_filter(grpc_channel_stack_builder *builder,
+static bool maybe_add_http_filter(grpc_exec_ctx *exec_ctx,
+                                  grpc_channel_stack_builder *builder,
                                   void *arg) {
   grpc_transport *t = grpc_channel_stack_builder_get_transport(builder);
   if (t && strstr(t->vtable->name, "http")) {
@@ -201,6 +205,8 @@ void grpc_init(void) {
     grpc_executor_init();
     gpr_timers_global_init();
     grpc_cq_global_init();
+    grpc_handshaker_factory_registry_init();
+    grpc_security_init();
     for (i = 0; i < g_number_of_plugins; i++) {
       if (g_all_of_the_plugins[i].init != NULL) {
         g_all_of_the_plugins[i].init();
@@ -221,11 +227,12 @@ void grpc_init(void) {
 void grpc_shutdown(void) {
   int i;
   GRPC_API_TRACE("grpc_shutdown(void)", 0, ());
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   gpr_mu_lock(&g_init_mu);
   if (--g_initializations == 0) {
-    grpc_executor_shutdown();
+    grpc_executor_shutdown(&exec_ctx);
     grpc_cq_global_shutdown();
-    grpc_iomgr_shutdown();
+    grpc_iomgr_shutdown(&exec_ctx);
     gpr_timers_global_destroy();
     grpc_tracer_shutdown();
     for (i = g_number_of_plugins; i >= 0; i--) {
@@ -233,9 +240,11 @@ void grpc_shutdown(void) {
         g_all_of_the_plugins[i].destroy();
       }
     }
-    grpc_mdctx_global_shutdown();
+    grpc_mdctx_global_shutdown(&exec_ctx);
+    grpc_handshaker_factory_registry_shutdown(&exec_ctx);
   }
   gpr_mu_unlock(&g_init_mu);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 int grpc_is_initialized(void) {
diff --git a/src/core/lib/surface/init.h b/src/core/lib/surface/init.h
index b1bf57c10d197e8ef06cb377d0707cfeb1e683b0..3d1c528be043ea495160de3fe6a00a8107dcb25c 100644
--- a/src/core/lib/surface/init.h
+++ b/src/core/lib/surface/init.h
@@ -36,6 +36,7 @@
 
 void grpc_register_security_filters(void);
 void grpc_security_pre_init(void);
+void grpc_security_init(void);
 int grpc_is_initialized(void);
 
 #endif /* GRPC_CORE_LIB_SURFACE_INIT_H */
diff --git a/src/core/lib/surface/init_secure.c b/src/core/lib/surface/init_secure.c
index 7ee7b51568ede51b16913f0564cbc0e7a72b64eb..a44407d3bb4637559f77f8eddf216ac7ffb27289 100644
--- a/src/core/lib/surface/init_secure.c
+++ b/src/core/lib/surface/init_secure.c
@@ -41,6 +41,7 @@
 #include "src/core/lib/security/transport/auth_filters.h"
 #include "src/core/lib/security/transport/secure_endpoint.h"
 #include "src/core/lib/security/transport/security_connector.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
 #include "src/core/lib/surface/channel_init.h"
 #include "src/core/lib/tsi/transport_security_interface.h"
 
@@ -50,7 +51,7 @@ void grpc_security_pre_init(void) {
 }
 
 static bool maybe_prepend_client_auth_filter(
-    grpc_channel_stack_builder *builder, void *arg) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder, void *arg) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);
   if (args) {
@@ -65,7 +66,7 @@ static bool maybe_prepend_client_auth_filter(
 }
 
 static bool maybe_prepend_server_auth_filter(
-    grpc_channel_stack_builder *builder, void *arg) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder, void *arg) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);
   if (args) {
@@ -87,3 +88,5 @@ void grpc_register_security_filters(void) {
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
                                    maybe_prepend_server_auth_filter, NULL);
 }
+
+void grpc_security_init() { grpc_security_register_handshaker_factories(); }
diff --git a/src/core/lib/surface/init_unsecure.c b/src/core/lib/surface/init_unsecure.c
index f952739e0a9d7360fb6820287b3ce6062da5c3d4..dbc9223ae0d6bcc0e11d40543df1a41d57e4d6e7 100644
--- a/src/core/lib/surface/init_unsecure.c
+++ b/src/core/lib/surface/init_unsecure.c
@@ -36,3 +36,5 @@
 void grpc_security_pre_init(void) {}
 
 void grpc_register_security_filters(void) {}
+
+void grpc_security_init(void) {}
diff --git a/src/core/lib/surface/lame_client.c b/src/core/lib/surface/lame_client.c
index d0df8e7e1743682e3594e21d33a355e84f2504e2..ae1eac09a96c5d9808a9864806ad7c582907f2a4 100644
--- a/src/core/lib/surface/lame_client.c
+++ b/src/core/lib/surface/lame_client.c
@@ -55,14 +55,15 @@ typedef struct {
   const char *error_message;
 } channel_data;
 
-static void fill_metadata(grpc_call_element *elem, grpc_metadata_batch *mdb) {
+static void fill_metadata(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
+                          grpc_metadata_batch *mdb) {
   call_data *calld = elem->call_data;
   channel_data *chand = elem->channel_data;
   char tmp[GPR_LTOA_MIN_BUFSIZE];
   gpr_ltoa(chand->error_code, tmp);
-  calld->status.md = grpc_mdelem_from_strings("grpc-status", tmp);
+  calld->status.md = grpc_mdelem_from_strings(exec_ctx, "grpc-status", tmp);
   calld->details.md =
-      grpc_mdelem_from_strings("grpc-message", chand->error_message);
+      grpc_mdelem_from_strings(exec_ctx, "grpc-message", chand->error_message);
   calld->status.prev = calld->details.next = NULL;
   calld->status.next = &calld->details;
   calld->details.prev = &calld->status;
@@ -76,9 +77,9 @@ static void lame_start_transport_stream_op(grpc_exec_ctx *exec_ctx,
                                            grpc_transport_stream_op *op) {
   GRPC_CALL_LOG_OP(GPR_INFO, elem, op);
   if (op->recv_initial_metadata != NULL) {
-    fill_metadata(elem, op->recv_initial_metadata);
+    fill_metadata(exec_ctx, elem, op->recv_initial_metadata);
   } else if (op->recv_trailing_metadata != NULL) {
-    fill_metadata(elem, op->recv_trailing_metadata);
+    fill_metadata(exec_ctx, elem, op->recv_trailing_metadata);
   }
   grpc_transport_stream_op_finish_with_failure(
       exec_ctx, op, GRPC_ERROR_CREATE("lame client channel"));
@@ -98,16 +99,16 @@ static void lame_start_transport_op(grpc_exec_ctx *exec_ctx,
   if (op->on_connectivity_state_change) {
     GPR_ASSERT(*op->connectivity_state != GRPC_CHANNEL_SHUTDOWN);
     *op->connectivity_state = GRPC_CHANNEL_SHUTDOWN;
-    grpc_exec_ctx_sched(exec_ctx, op->on_connectivity_state_change,
-                        GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, op->on_connectivity_state_change,
+                       GRPC_ERROR_NONE);
   }
   if (op->send_ping != NULL) {
-    grpc_exec_ctx_sched(exec_ctx, op->send_ping,
-                        GRPC_ERROR_CREATE("lame client channel"), NULL);
+    grpc_closure_sched(exec_ctx, op->send_ping,
+                       GRPC_ERROR_CREATE("lame client channel"));
   }
   GRPC_ERROR_UNREF(op->disconnect_with_error);
   if (op->on_consumed != NULL) {
-    grpc_exec_ctx_sched(exec_ctx, op->on_consumed, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, op->on_consumed, GRPC_ERROR_NONE);
   }
 }
 
@@ -123,11 +124,12 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
   gpr_free(and_free_memory);
 }
 
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   GPR_ASSERT(args->is_first);
   GPR_ASSERT(args->is_last);
+  return GRPC_ERROR_NONE;
 }
 
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/lib/surface/server.c b/src/core/lib/surface/server.c
index fe73aa375cb2a20f363901e11f96a2149ce05184..addb7c4fbc039667d35487d4cdab73a2ef810103 100644
--- a/src/core/lib/surface/server.c
+++ b/src/core/lib/surface/server.c
@@ -45,6 +45,7 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
 #include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/stack_lockfree.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/api_trace.h"
@@ -271,14 +272,15 @@ struct shutdown_cleanup_args {
 static void shutdown_cleanup(grpc_exec_ctx *exec_ctx, void *arg,
                              grpc_error *error) {
   struct shutdown_cleanup_args *a = arg;
-  grpc_slice_unref(a->slice);
+  grpc_slice_unref_internal(exec_ctx, a->slice);
   gpr_free(a);
 }
 
 static void send_shutdown(grpc_exec_ctx *exec_ctx, grpc_channel *channel,
                           int send_goaway, grpc_error *send_disconnect) {
   struct shutdown_cleanup_args *sc = gpr_malloc(sizeof(*sc));
-  grpc_closure_init(&sc->closure, shutdown_cleanup, sc);
+  grpc_closure_init(&sc->closure, shutdown_cleanup, sc,
+                    grpc_schedule_on_exec_ctx);
   grpc_transport_op *op = grpc_make_transport_op(&sc->closure);
   grpc_channel_element *elem;
 
@@ -346,9 +348,9 @@ static void request_matcher_zombify_all_pending_calls(grpc_exec_ctx *exec_ctx,
     gpr_mu_unlock(&calld->mu_state);
     grpc_closure_init(
         &calld->kill_zombie_closure, kill_zombie,
-        grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0));
-    grpc_exec_ctx_sched(exec_ctx, &calld->kill_zombie_closure, GRPC_ERROR_NONE,
-                        NULL);
+        grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0),
+        grpc_schedule_on_exec_ctx);
+    grpc_closure_sched(exec_ctx, &calld->kill_zombie_closure, GRPC_ERROR_NONE);
   }
 }
 
@@ -379,7 +381,7 @@ static void server_ref(grpc_server *server) {
 static void server_delete(grpc_exec_ctx *exec_ctx, grpc_server *server) {
   registered_method *rm;
   size_t i;
-  grpc_channel_args_destroy(server->channel_args);
+  grpc_channel_args_destroy(exec_ctx, server->channel_args);
   gpr_mu_destroy(&server->mu_global);
   gpr_mu_destroy(&server->mu_call);
   while ((rm = server->registered_methods) != NULL) {
@@ -440,8 +442,8 @@ static void destroy_channel(grpc_exec_ctx *exec_ctx, channel_data *chand,
   orphan_channel(chand);
   server_ref(chand->server);
   maybe_finish_shutdown(exec_ctx, chand->server);
-  chand->finish_destroy_channel_closure.cb = finish_destroy_channel;
-  chand->finish_destroy_channel_closure.cb_arg = chand;
+  grpc_closure_init(&chand->finish_destroy_channel_closure,
+                    finish_destroy_channel, chand, grpc_schedule_on_exec_ctx);
 
   if (grpc_server_channel_trace && error != GRPC_ERROR_NONE) {
     const char *msg = grpc_error_string(error);
@@ -545,8 +547,9 @@ static void publish_new_rpc(grpc_exec_ctx *exec_ctx, void *arg,
     gpr_mu_unlock(&calld->mu_state);
     grpc_closure_init(
         &calld->kill_zombie_closure, kill_zombie,
-        grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0));
-    grpc_exec_ctx_sched(exec_ctx, &calld->kill_zombie_closure, error, NULL);
+        grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0),
+        grpc_schedule_on_exec_ctx);
+    grpc_closure_sched(exec_ctx, &calld->kill_zombie_closure, error);
     return;
   }
 
@@ -590,9 +593,9 @@ static void finish_start_new_rpc(
     gpr_mu_lock(&calld->mu_state);
     calld->state = ZOMBIED;
     gpr_mu_unlock(&calld->mu_state);
-    grpc_closure_init(&calld->kill_zombie_closure, kill_zombie, elem);
-    grpc_exec_ctx_sched(exec_ctx, &calld->kill_zombie_closure, GRPC_ERROR_NONE,
-                        NULL);
+    grpc_closure_init(&calld->kill_zombie_closure, kill_zombie, elem,
+                      grpc_schedule_on_exec_ctx);
+    grpc_closure_sched(exec_ctx, &calld->kill_zombie_closure, GRPC_ERROR_NONE);
     return;
   }
 
@@ -607,7 +610,8 @@ static void finish_start_new_rpc(
       memset(&op, 0, sizeof(op));
       op.op = GRPC_OP_RECV_MESSAGE;
       op.data.recv_message = &calld->payload;
-      grpc_closure_init(&calld->publish, publish_new_rpc, elem);
+      grpc_closure_init(&calld->publish, publish_new_rpc, elem,
+                        grpc_schedule_on_exec_ctx);
       grpc_call_start_batch_and_execute(exec_ctx, calld->call, &op, 1,
                                         &calld->publish);
       break;
@@ -740,7 +744,8 @@ static void maybe_finish_shutdown(grpc_exec_ctx *exec_ctx,
   }
 }
 
-static grpc_mdelem *server_filter(void *user_data, grpc_mdelem *md) {
+static grpc_mdelem *server_filter(grpc_exec_ctx *exec_ctx, void *user_data,
+                                  grpc_mdelem *md) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
   if (md->key == GRPC_MDSTR_PATH) {
@@ -764,7 +769,8 @@ static void server_on_recv_initial_metadata(grpc_exec_ctx *exec_ctx, void *ptr,
   gpr_timespec op_deadline;
 
   GRPC_ERROR_REF(error);
-  grpc_metadata_batch_filter(calld->recv_initial_metadata, server_filter, elem);
+  grpc_metadata_batch_filter(exec_ctx, calld->recv_initial_metadata,
+                             server_filter, elem);
   op_deadline = calld->recv_initial_metadata->deadline;
   if (0 != gpr_time_cmp(op_deadline, gpr_inf_future(op_deadline.clock_type))) {
     calld->deadline = op_deadline;
@@ -813,9 +819,10 @@ static void got_initial_metadata(grpc_exec_ctx *exec_ctx, void *ptr,
     if (calld->state == NOT_STARTED) {
       calld->state = ZOMBIED;
       gpr_mu_unlock(&calld->mu_state);
-      grpc_closure_init(&calld->kill_zombie_closure, kill_zombie, elem);
-      grpc_exec_ctx_sched(exec_ctx, &calld->kill_zombie_closure,
-                          GRPC_ERROR_NONE, NULL);
+      grpc_closure_init(&calld->kill_zombie_closure, kill_zombie, elem,
+                        grpc_schedule_on_exec_ctx);
+      grpc_closure_sched(exec_ctx, &calld->kill_zombie_closure,
+                         GRPC_ERROR_NONE);
     } else if (calld->state == PENDING) {
       calld->state = ZOMBIED;
       gpr_mu_unlock(&calld->mu_state);
@@ -838,7 +845,7 @@ static void accept_stream(grpc_exec_ctx *exec_ctx, void *cd,
   args.server_transport_data = transport_server_data;
   args.send_deadline = gpr_inf_future(GPR_CLOCK_MONOTONIC);
   grpc_call *call;
-  grpc_error *error = grpc_call_create(&args, &call);
+  grpc_error *error = grpc_call_create(exec_ctx, &args, &call);
   grpc_call_element *elem =
       grpc_call_stack_element(grpc_call_get_call_stack(call), 0);
   if (error != GRPC_ERROR_NONE) {
@@ -851,7 +858,8 @@ static void accept_stream(grpc_exec_ctx *exec_ctx, void *cd,
   memset(&op, 0, sizeof(op));
   op.op = GRPC_OP_RECV_INITIAL_METADATA;
   op.data.recv_initial_metadata = &calld->initial_metadata;
-  grpc_closure_init(&calld->got_initial_metadata, got_initial_metadata, elem);
+  grpc_closure_init(&calld->got_initial_metadata, got_initial_metadata, elem,
+                    grpc_schedule_on_exec_ctx);
   grpc_call_start_batch_and_execute(exec_ctx, call, &op, 1,
                                     &calld->got_initial_metadata);
 }
@@ -887,7 +895,8 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
   gpr_mu_init(&calld->mu_state);
 
   grpc_closure_init(&calld->server_on_recv_initial_metadata,
-                    server_on_recv_initial_metadata, elem);
+                    server_on_recv_initial_metadata, elem,
+                    grpc_schedule_on_exec_ctx);
 
   server_ref(chand->server);
   return GRPC_ERROR_NONE;
@@ -902,10 +911,10 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
   GPR_ASSERT(calld->state != PENDING);
 
   if (calld->host) {
-    GRPC_MDSTR_UNREF(calld->host);
+    GRPC_MDSTR_UNREF(exec_ctx, calld->host);
   }
   if (calld->path) {
-    GRPC_MDSTR_UNREF(calld->path);
+    GRPC_MDSTR_UNREF(exec_ctx, calld->path);
   }
   grpc_metadata_array_destroy(&calld->initial_metadata);
 
@@ -914,9 +923,9 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
   server_unref(exec_ctx, chand->server);
 }
 
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   channel_data *chand = elem->channel_data;
   GPR_ASSERT(args->is_first);
   GPR_ASSERT(!args->is_last);
@@ -926,7 +935,9 @@ static void init_channel_elem(grpc_exec_ctx *exec_ctx,
   chand->registered_methods = NULL;
   chand->connectivity_state = GRPC_CHANNEL_IDLE;
   grpc_closure_init(&chand->channel_connectivity_changed,
-                    channel_connectivity_changed, chand);
+                    channel_connectivity_changed, chand,
+                    grpc_schedule_on_exec_ctx);
+  return GRPC_ERROR_NONE;
 }
 
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
@@ -936,10 +947,10 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   if (chand->registered_methods) {
     for (i = 0; i < chand->registered_method_slots; i++) {
       if (chand->registered_methods[i].method) {
-        GRPC_MDSTR_UNREF(chand->registered_methods[i].method);
+        GRPC_MDSTR_UNREF(exec_ctx, chand->registered_methods[i].method);
       }
       if (chand->registered_methods[i].host) {
-        GRPC_MDSTR_UNREF(chand->registered_methods[i].host);
+        GRPC_MDSTR_UNREF(exec_ctx, chand->registered_methods[i].host);
       }
     }
     gpr_free(chand->registered_methods);
@@ -1277,7 +1288,8 @@ void grpc_server_shutdown_and_notify(grpc_server *server,
 
   /* Shutdown listeners */
   for (l = server->listeners; l; l = l->next) {
-    grpc_closure_init(&l->destroy_done, listener_destroy_done, server);
+    grpc_closure_init(&l->destroy_done, listener_destroy_done, server,
+                      grpc_schedule_on_exec_ctx);
     l->destroy(&exec_ctx, server, l->arg, &l->destroy_done);
   }
 
@@ -1383,9 +1395,10 @@ static grpc_call_error queue_call_request(grpc_exec_ctx *exec_ctx,
         gpr_mu_unlock(&calld->mu_state);
         grpc_closure_init(
             &calld->kill_zombie_closure, kill_zombie,
-            grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0));
-        grpc_exec_ctx_sched(exec_ctx, &calld->kill_zombie_closure,
-                            GRPC_ERROR_NONE, NULL);
+            grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0),
+            grpc_schedule_on_exec_ctx);
+        grpc_closure_sched(exec_ctx, &calld->kill_zombie_closure,
+                           GRPC_ERROR_NONE);
       } else {
         GPR_ASSERT(calld->state == PENDING);
         calld->state = ACTIVATED;
diff --git a/src/core/lib/surface/validate_metadata.c b/src/core/lib/surface/validate_metadata.c
index 84f0a083bc165fa79d21aba70a340295fb413005..f49dd8584b0dbeed2c81f58cce7b1d692cce36d0 100644
--- a/src/core/lib/surface/validate_metadata.c
+++ b/src/core/lib/surface/validate_metadata.c
@@ -53,7 +53,7 @@ int grpc_header_key_is_legal(const char *key, size_t length) {
       0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0xff, 0x03, 0x00, 0x00, 0x00,
       0x80, 0xfe, 0xff, 0xff, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
-  if (length == 0) {
+  if (length == 0 || key[0] == ':') {
     return 0;
   }
   return conforms_to(key, length, legal_header_bits);
diff --git a/src/core/lib/transport/README.md b/src/core/lib/transport/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..e7e135edeb134db20477618c05be90b672abe57b
--- /dev/null
+++ b/src/core/lib/transport/README.md
@@ -0,0 +1,7 @@
+# Transport
+
+Common implementation details for gRPC Transports.
+
+Transports multiplex messages across some single connection. In ext/ there are
+implementations atop [a custom http2 implementation](/src/core/ext/transport/chttp2/README.md)
+and atop [cronet](/src/core/ext/transport/cronet/README.md).
diff --git a/src/core/lib/transport/byte_stream.c b/src/core/lib/transport/byte_stream.c
index 2f1d7b7c60c8ee4cfee73bddf353fa2de64378d9..4d4206189e7be0243148d9cebb9b8962f2bd4701 100644
--- a/src/core/lib/transport/byte_stream.c
+++ b/src/core/lib/transport/byte_stream.c
@@ -37,6 +37,8 @@
 
 #include <grpc/support/log.h>
 
+#include "src/core/lib/slice/slice_internal.h"
+
 int grpc_byte_stream_next(grpc_exec_ctx *exec_ctx,
                           grpc_byte_stream *byte_stream, grpc_slice *slice,
                           size_t max_size_hint, grpc_closure *on_complete) {
@@ -57,7 +59,8 @@ static int slice_buffer_stream_next(grpc_exec_ctx *exec_ctx,
                                     grpc_closure *on_complete) {
   grpc_slice_buffer_stream *stream = (grpc_slice_buffer_stream *)byte_stream;
   GPR_ASSERT(stream->cursor < stream->backing_buffer->count);
-  *slice = grpc_slice_ref(stream->backing_buffer->slices[stream->cursor]);
+  *slice =
+      grpc_slice_ref_internal(stream->backing_buffer->slices[stream->cursor]);
   stream->cursor++;
   return 1;
 }
diff --git a/src/core/lib/transport/connectivity_state.c b/src/core/lib/transport/connectivity_state.c
index 4f49d7cf7d769a93dc2639b979c232026a0b9728..c656d93740e86bfd465a0fd2e021e52b4890b1e5 100644
--- a/src/core/lib/transport/connectivity_state.c
+++ b/src/core/lib/transport/connectivity_state.c
@@ -81,7 +81,7 @@ void grpc_connectivity_state_destroy(grpc_exec_ctx *exec_ctx,
     } else {
       error = GRPC_ERROR_CREATE("Shutdown connectivity owner");
     }
-    grpc_exec_ctx_sched(exec_ctx, w->notify, error, NULL);
+    grpc_closure_sched(exec_ctx, w->notify, error);
     gpr_free(w);
   }
   GRPC_ERROR_UNREF(tracker->current_error);
@@ -121,7 +121,7 @@ bool grpc_connectivity_state_notify_on_state_change(
   if (current == NULL) {
     grpc_connectivity_state_watcher *w = tracker->watchers;
     if (w != NULL && w->notify == notify) {
-      grpc_exec_ctx_sched(exec_ctx, notify, GRPC_ERROR_CANCELLED, NULL);
+      grpc_closure_sched(exec_ctx, notify, GRPC_ERROR_CANCELLED);
       tracker->watchers = w->next;
       gpr_free(w);
       return false;
@@ -129,7 +129,7 @@ bool grpc_connectivity_state_notify_on_state_change(
     while (w != NULL) {
       grpc_connectivity_state_watcher *rm_candidate = w->next;
       if (rm_candidate != NULL && rm_candidate->notify == notify) {
-        grpc_exec_ctx_sched(exec_ctx, notify, GRPC_ERROR_CANCELLED, NULL);
+        grpc_closure_sched(exec_ctx, notify, GRPC_ERROR_CANCELLED);
         w->next = w->next->next;
         gpr_free(rm_candidate);
         return false;
@@ -140,8 +140,8 @@ bool grpc_connectivity_state_notify_on_state_change(
   } else {
     if (tracker->current_state != *current) {
       *current = tracker->current_state;
-      grpc_exec_ctx_sched(exec_ctx, notify,
-                          GRPC_ERROR_REF(tracker->current_error), NULL);
+      grpc_closure_sched(exec_ctx, notify,
+                         GRPC_ERROR_REF(tracker->current_error));
     } else {
       grpc_connectivity_state_watcher *w = gpr_malloc(sizeof(*w));
       w->current = current;
@@ -191,8 +191,8 @@ void grpc_connectivity_state_set(grpc_exec_ctx *exec_ctx,
       gpr_log(GPR_DEBUG, "NOTIFY: %p %s: %p", tracker, tracker->name,
               w->notify);
     }
-    grpc_exec_ctx_sched(exec_ctx, w->notify,
-                        GRPC_ERROR_REF(tracker->current_error), NULL);
+    grpc_closure_sched(exec_ctx, w->notify,
+                       GRPC_ERROR_REF(tracker->current_error));
     gpr_free(w);
   }
 }
diff --git a/src/core/lib/transport/mdstr_hash_table.c b/src/core/lib/transport/mdstr_hash_table.c
index 3d01e56df7e7883cfc6d54d5573225ea54a483b9..2791bf653b89797cb9b04cc854cdd0ae7c312213 100644
--- a/src/core/lib/transport/mdstr_hash_table.c
+++ b/src/core/lib/transport/mdstr_hash_table.c
@@ -94,13 +94,14 @@ grpc_mdstr_hash_table* grpc_mdstr_hash_table_ref(grpc_mdstr_hash_table* table) {
   return table;
 }
 
-void grpc_mdstr_hash_table_unref(grpc_mdstr_hash_table* table) {
+void grpc_mdstr_hash_table_unref(grpc_exec_ctx* exec_ctx,
+                                 grpc_mdstr_hash_table* table) {
   if (table != NULL && gpr_unref(&table->refs)) {
     for (size_t i = 0; i < table->size; ++i) {
       grpc_mdstr_hash_table_entry* entry = &table->entries[i];
       if (entry->key != NULL) {
-        GRPC_MDSTR_UNREF(entry->key);
-        entry->vtable->destroy_value(entry->value);
+        GRPC_MDSTR_UNREF(exec_ctx, entry->key);
+        entry->vtable->destroy_value(exec_ctx, entry->value);
       }
     }
     gpr_free(table->entries);
diff --git a/src/core/lib/transport/mdstr_hash_table.h b/src/core/lib/transport/mdstr_hash_table.h
index 8982ec3a8dc01f305bc3849eff736f2cf47b56f6..57f497ee278dcba766b090b9dce942fad0a0f6c0 100644
--- a/src/core/lib/transport/mdstr_hash_table.h
+++ b/src/core/lib/transport/mdstr_hash_table.h
@@ -49,7 +49,7 @@
 typedef struct grpc_mdstr_hash_table grpc_mdstr_hash_table;
 
 typedef struct grpc_mdstr_hash_table_vtable {
-  void (*destroy_value)(void* value);
+  void (*destroy_value)(grpc_exec_ctx* exec_ctx, void* value);
   void* (*copy_value)(void* value);
 } grpc_mdstr_hash_table_vtable;
 
@@ -66,7 +66,8 @@ grpc_mdstr_hash_table* grpc_mdstr_hash_table_create(
     size_t num_entries, grpc_mdstr_hash_table_entry* entries);
 
 grpc_mdstr_hash_table* grpc_mdstr_hash_table_ref(grpc_mdstr_hash_table* table);
-void grpc_mdstr_hash_table_unref(grpc_mdstr_hash_table* table);
+void grpc_mdstr_hash_table_unref(grpc_exec_ctx* exec_ctx,
+                                 grpc_mdstr_hash_table* table);
 
 /** Returns the value from \a table associated with \a key.
     Returns NULL if \a key is not found. */
diff --git a/src/core/lib/transport/metadata.c b/src/core/lib/transport/metadata.c
index fac19b91d9e8d775125855d920a4fea9397810e7..54c39df6a7f44722d4a05f780c0532514c288682 100644
--- a/src/core/lib/transport/metadata.c
+++ b/src/core/lib/transport/metadata.c
@@ -47,6 +47,7 @@
 
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/murmur_hash.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
@@ -153,7 +154,7 @@ static size_t g_static_mdtab_maxprobe;
 static strtab_shard g_strtab_shard[STRTAB_SHARD_COUNT];
 static mdtab_shard g_mdtab_shard[MDTAB_SHARD_COUNT];
 
-static void gc_mdtab(mdtab_shard *shard);
+static void gc_mdtab(grpc_exec_ctx *exec_ctx, mdtab_shard *shard);
 
 void grpc_test_only_set_metadata_hash_seed(uint32_t seed) {
   g_hash_seed = seed;
@@ -227,12 +228,12 @@ void grpc_mdctx_global_init(void) {
   }
 }
 
-void grpc_mdctx_global_shutdown(void) {
+void grpc_mdctx_global_shutdown(grpc_exec_ctx *exec_ctx) {
   size_t i;
   for (i = 0; i < MDTAB_SHARD_COUNT; i++) {
     mdtab_shard *shard = &g_mdtab_shard[i];
     gpr_mu_destroy(&shard->mu);
-    gc_mdtab(shard);
+    gc_mdtab(exec_ctx, shard);
     /* TODO(ctiller): GPR_ASSERT(shard->count == 0); */
     if (shard->count != 0) {
       gpr_log(GPR_DEBUG, "WARNING: %" PRIuPTR " metadata elements were leaked",
@@ -316,12 +317,13 @@ static void grow_strtab(strtab_shard *shard) {
   GPR_TIMER_END("grow_strtab", 0);
 }
 
-static void internal_destroy_string(strtab_shard *shard, internal_string *is) {
+static void internal_destroy_string(grpc_exec_ctx *exec_ctx,
+                                    strtab_shard *shard, internal_string *is) {
   internal_string **prev_next;
   internal_string *cur;
   GPR_TIMER_BEGIN("internal_destroy_string", 0);
   if (is->has_base64_and_huffman_encoded) {
-    grpc_slice_unref(is->base64_and_huffman);
+    grpc_slice_unref_internal(exec_ctx, is->base64_and_huffman);
   }
   for (prev_next = &shard->strs[TABLE_IDX(is->hash, LOG2_STRTAB_SHARD_COUNT,
                                           shard->capacity)],
@@ -340,20 +342,20 @@ static void slice_ref(void *p) {
   GRPC_MDSTR_REF((grpc_mdstr *)(is));
 }
 
-static void slice_unref(void *p) {
+static void slice_unref(grpc_exec_ctx *exec_ctx, void *p) {
   internal_string *is =
       (internal_string *)((char *)p - offsetof(internal_string, refcount));
-  GRPC_MDSTR_UNREF((grpc_mdstr *)(is));
+  GRPC_MDSTR_UNREF(exec_ctx, (grpc_mdstr *)(is));
 }
 
 grpc_mdstr *grpc_mdstr_from_string(const char *str) {
   return grpc_mdstr_from_buffer((const uint8_t *)str, strlen(str));
 }
 
-grpc_mdstr *grpc_mdstr_from_slice(grpc_slice slice) {
+grpc_mdstr *grpc_mdstr_from_slice(grpc_exec_ctx *exec_ctx, grpc_slice slice) {
   grpc_mdstr *result = grpc_mdstr_from_buffer(GRPC_SLICE_START_PTR(slice),
                                               GRPC_SLICE_LENGTH(slice));
-  grpc_slice_unref(slice);
+  grpc_slice_unref_internal(exec_ctx, slice);
   return result;
 }
 
@@ -444,7 +446,7 @@ grpc_mdstr *grpc_mdstr_from_buffer(const uint8_t *buf, size_t length) {
   return (grpc_mdstr *)s;
 }
 
-static void gc_mdtab(mdtab_shard *shard) {
+static void gc_mdtab(grpc_exec_ctx *exec_ctx, mdtab_shard *shard) {
   size_t i;
   internal_metadata **prev_next;
   internal_metadata *md, *next;
@@ -457,8 +459,8 @@ static void gc_mdtab(mdtab_shard *shard) {
       void *user_data = (void *)gpr_atm_no_barrier_load(&md->user_data);
       next = md->bucket_next;
       if (gpr_atm_acq_load(&md->refcnt) == 0) {
-        GRPC_MDSTR_UNREF((grpc_mdstr *)md->key);
-        GRPC_MDSTR_UNREF((grpc_mdstr *)md->value);
+        GRPC_MDSTR_UNREF(exec_ctx, (grpc_mdstr *)md->key);
+        GRPC_MDSTR_UNREF(exec_ctx, (grpc_mdstr *)md->value);
         if (md->user_data) {
           ((destroy_user_data_func)gpr_atm_no_barrier_load(
               &md->destroy_user_data))(user_data);
@@ -506,16 +508,17 @@ static void grow_mdtab(mdtab_shard *shard) {
   GPR_TIMER_END("grow_mdtab", 0);
 }
 
-static void rehash_mdtab(mdtab_shard *shard) {
+static void rehash_mdtab(grpc_exec_ctx *exec_ctx, mdtab_shard *shard) {
   if (gpr_atm_no_barrier_load(&shard->free_estimate) >
       (gpr_atm)(shard->capacity / 4)) {
-    gc_mdtab(shard);
+    gc_mdtab(exec_ctx, shard);
   } else {
     grow_mdtab(shard);
   }
 }
 
-grpc_mdelem *grpc_mdelem_from_metadata_strings(grpc_mdstr *mkey,
+grpc_mdelem *grpc_mdelem_from_metadata_strings(grpc_exec_ctx *exec_ctx,
+                                               grpc_mdstr *mkey,
                                                grpc_mdstr *mvalue) {
   internal_string *key = (internal_string *)mkey;
   internal_string *value = (internal_string *)mvalue;
@@ -547,8 +550,8 @@ grpc_mdelem *grpc_mdelem_from_metadata_strings(grpc_mdstr *mkey,
   for (md = shard->elems[idx]; md; md = md->bucket_next) {
     if (md->key == key && md->value == value) {
       REF_MD_LOCKED(shard, md);
-      GRPC_MDSTR_UNREF((grpc_mdstr *)key);
-      GRPC_MDSTR_UNREF((grpc_mdstr *)value);
+      GRPC_MDSTR_UNREF(exec_ctx, (grpc_mdstr *)key);
+      GRPC_MDSTR_UNREF(exec_ctx, (grpc_mdstr *)value);
       gpr_mu_unlock(&shard->mu);
       GPR_TIMER_END("grpc_mdelem_from_metadata_strings", 0);
       return (grpc_mdelem *)md;
@@ -574,7 +577,7 @@ grpc_mdelem *grpc_mdelem_from_metadata_strings(grpc_mdstr *mkey,
   shard->count++;
 
   if (shard->count > shard->capacity * 2) {
-    rehash_mdtab(shard);
+    rehash_mdtab(exec_ctx, shard);
   }
 
   gpr_mu_unlock(&shard->mu);
@@ -584,21 +587,26 @@ grpc_mdelem *grpc_mdelem_from_metadata_strings(grpc_mdstr *mkey,
   return (grpc_mdelem *)md;
 }
 
-grpc_mdelem *grpc_mdelem_from_strings(const char *key, const char *value) {
-  return grpc_mdelem_from_metadata_strings(grpc_mdstr_from_string(key),
-                                           grpc_mdstr_from_string(value));
+grpc_mdelem *grpc_mdelem_from_strings(grpc_exec_ctx *exec_ctx, const char *key,
+                                      const char *value) {
+  return grpc_mdelem_from_metadata_strings(
+      exec_ctx, grpc_mdstr_from_string(key), grpc_mdstr_from_string(value));
 }
 
-grpc_mdelem *grpc_mdelem_from_slices(grpc_slice key, grpc_slice value) {
-  return grpc_mdelem_from_metadata_strings(grpc_mdstr_from_slice(key),
-                                           grpc_mdstr_from_slice(value));
+grpc_mdelem *grpc_mdelem_from_slices(grpc_exec_ctx *exec_ctx, grpc_slice key,
+                                     grpc_slice value) {
+  return grpc_mdelem_from_metadata_strings(
+      exec_ctx, grpc_mdstr_from_slice(exec_ctx, key),
+      grpc_mdstr_from_slice(exec_ctx, value));
 }
 
-grpc_mdelem *grpc_mdelem_from_string_and_buffer(const char *key,
+grpc_mdelem *grpc_mdelem_from_string_and_buffer(grpc_exec_ctx *exec_ctx,
+                                                const char *key,
                                                 const uint8_t *value,
                                                 size_t value_length) {
   return grpc_mdelem_from_metadata_strings(
-      grpc_mdstr_from_string(key), grpc_mdstr_from_buffer(value, value_length));
+      exec_ctx, grpc_mdstr_from_string(key),
+      grpc_mdstr_from_buffer(value, value_length));
 }
 
 static size_t get_base64_encoded_size(size_t raw_length) {
@@ -654,7 +662,7 @@ grpc_mdelem *grpc_mdelem_ref(grpc_mdelem *gmd DEBUG_ARGS) {
   return gmd;
 }
 
-void grpc_mdelem_unref(grpc_mdelem *gmd DEBUG_ARGS) {
+void grpc_mdelem_unref(grpc_exec_ctx *exec_ctx, grpc_mdelem *gmd DEBUG_ARGS) {
   internal_metadata *md = (internal_metadata *)gmd;
   if (!md) return;
   if (is_mdelem_static(gmd)) return;
@@ -696,7 +704,7 @@ grpc_mdstr *grpc_mdstr_ref(grpc_mdstr *gs DEBUG_ARGS) {
   return gs;
 }
 
-void grpc_mdstr_unref(grpc_mdstr *gs DEBUG_ARGS) {
+void grpc_mdstr_unref(grpc_exec_ctx *exec_ctx, grpc_mdstr *gs DEBUG_ARGS) {
   internal_string *s = (internal_string *)gs;
   if (is_mdstr_static(gs)) return;
 #ifdef GRPC_METADATA_REFCOUNT_DEBUG
@@ -709,7 +717,7 @@ void grpc_mdstr_unref(grpc_mdstr *gs DEBUG_ARGS) {
         &g_strtab_shard[SHARD_IDX(s->hash, LOG2_STRTAB_SHARD_COUNT)];
     gpr_mu_lock(&shard->mu);
     GPR_ASSERT(0 == gpr_atm_no_barrier_load(&s->refcnt));
-    internal_destroy_string(shard, s);
+    internal_destroy_string(exec_ctx, shard, s);
     gpr_mu_unlock(&shard->mu);
   }
 }
diff --git a/src/core/lib/transport/metadata.h b/src/core/lib/transport/metadata.h
index a4955a1ea7440e506e91efba88816e5b02afd67f..991eee96f1c1df7189252ace3be719af8109103a 100644
--- a/src/core/lib/transport/metadata.h
+++ b/src/core/lib/transport/metadata.h
@@ -37,6 +37,8 @@
 #include <grpc/slice.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/iomgr/exec_ctx.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -96,7 +98,7 @@ void grpc_test_only_set_metadata_hash_seed(uint32_t seed);
    clients may have handy */
 grpc_mdstr *grpc_mdstr_from_string(const char *str);
 /* Unrefs the slice. */
-grpc_mdstr *grpc_mdstr_from_slice(grpc_slice slice);
+grpc_mdstr *grpc_mdstr_from_slice(grpc_exec_ctx *exec_ctx, grpc_slice slice);
 grpc_mdstr *grpc_mdstr_from_buffer(const uint8_t *str, size_t length);
 
 /* Returns a borrowed slice from the mdstr with its contents base64 encoded
@@ -105,12 +107,16 @@ grpc_slice grpc_mdstr_as_base64_encoded_and_huffman_compressed(grpc_mdstr *str);
 
 /* Constructors for grpc_mdelem instances; take a variety of data types that
    clients may have handy */
-grpc_mdelem *grpc_mdelem_from_metadata_strings(grpc_mdstr *key,
+grpc_mdelem *grpc_mdelem_from_metadata_strings(grpc_exec_ctx *exec_ctx,
+                                               grpc_mdstr *key,
                                                grpc_mdstr *value);
-grpc_mdelem *grpc_mdelem_from_strings(const char *key, const char *value);
+grpc_mdelem *grpc_mdelem_from_strings(grpc_exec_ctx *exec_ctx, const char *key,
+                                      const char *value);
 /* Unrefs the slices. */
-grpc_mdelem *grpc_mdelem_from_slices(grpc_slice key, grpc_slice value);
-grpc_mdelem *grpc_mdelem_from_string_and_buffer(const char *key,
+grpc_mdelem *grpc_mdelem_from_slices(grpc_exec_ctx *exec_ctx, grpc_slice key,
+                                     grpc_slice value);
+grpc_mdelem *grpc_mdelem_from_string_and_buffer(grpc_exec_ctx *exec_ctx,
+                                                const char *key,
                                                 const uint8_t *value,
                                                 size_t value_length);
 
@@ -127,22 +133,26 @@ void *grpc_mdelem_set_user_data(grpc_mdelem *md, void (*destroy_func)(void *),
 //#define GRPC_METADATA_REFCOUNT_DEBUG
 #ifdef GRPC_METADATA_REFCOUNT_DEBUG
 #define GRPC_MDSTR_REF(s) grpc_mdstr_ref((s), __FILE__, __LINE__)
-#define GRPC_MDSTR_UNREF(s) grpc_mdstr_unref((s), __FILE__, __LINE__)
+#define GRPC_MDSTR_UNREF(exec_ctx, s) \
+  grpc_mdstr_unref((exec_ctx), (s), __FILE__, __LINE__)
 #define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s), __FILE__, __LINE__)
-#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s), __FILE__, __LINE__)
+#define GRPC_MDELEM_UNREF(exec_ctx, s) \
+  grpc_mdelem_unref((exec_ctx), (s), __FILE__, __LINE__)
 grpc_mdstr *grpc_mdstr_ref(grpc_mdstr *s, const char *file, int line);
-void grpc_mdstr_unref(grpc_mdstr *s, const char *file, int line);
+void grpc_mdstr_unref(grpc_exec_ctx *exec_ctx, grpc_mdstr *s, const char *file,
+                      int line);
 grpc_mdelem *grpc_mdelem_ref(grpc_mdelem *md, const char *file, int line);
-void grpc_mdelem_unref(grpc_mdelem *md, const char *file, int line);
+void grpc_mdelem_unref(grpc_exec_ctx *exec_ctx, grpc_mdelem *md,
+                       const char *file, int line);
 #else
 #define GRPC_MDSTR_REF(s) grpc_mdstr_ref((s))
-#define GRPC_MDSTR_UNREF(s) grpc_mdstr_unref((s))
+#define GRPC_MDSTR_UNREF(exec_ctx, s) grpc_mdstr_unref((exec_ctx), (s))
 #define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s))
-#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s))
+#define GRPC_MDELEM_UNREF(exec_ctx, s) grpc_mdelem_unref((exec_ctx), (s))
 grpc_mdstr *grpc_mdstr_ref(grpc_mdstr *s);
-void grpc_mdstr_unref(grpc_mdstr *s);
+void grpc_mdstr_unref(grpc_exec_ctx *exec_ctx, grpc_mdstr *s);
 grpc_mdelem *grpc_mdelem_ref(grpc_mdelem *md);
-void grpc_mdelem_unref(grpc_mdelem *md);
+void grpc_mdelem_unref(grpc_exec_ctx *exec_ctx, grpc_mdelem *md);
 #endif
 
 /* Recover a char* from a grpc_mdstr. The returned string is null terminated.
@@ -162,7 +172,7 @@ int grpc_mdstr_is_bin_suffixed(grpc_mdstr *s);
 #define GRPC_MDSTR_KV_HASH(k_hash, v_hash) (GPR_ROTL((k_hash), 2) ^ (v_hash))
 
 void grpc_mdctx_global_init(void);
-void grpc_mdctx_global_shutdown(void);
+void grpc_mdctx_global_shutdown(grpc_exec_ctx *exec_ctx);
 
 /* Implementation provided by chttp2_transport */
 extern grpc_slice (*grpc_chttp2_base64_encode_and_huffman_compress)(
diff --git a/src/core/lib/transport/metadata_batch.c b/src/core/lib/transport/metadata_batch.c
index 84b5a74d513709dcdb2093b48dc793fab91756e5..b62ecc3aa6f86aa9b17741e11ed751d1af80058c 100644
--- a/src/core/lib/transport/metadata_batch.c
+++ b/src/core/lib/transport/metadata_batch.c
@@ -72,10 +72,11 @@ void grpc_metadata_batch_init(grpc_metadata_batch *batch) {
   batch->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
 }
 
-void grpc_metadata_batch_destroy(grpc_metadata_batch *batch) {
+void grpc_metadata_batch_destroy(grpc_exec_ctx *exec_ctx,
+                                 grpc_metadata_batch *batch) {
   grpc_linked_mdelem *l;
   for (l = batch->list.head; l; l = l->next) {
-    GRPC_MDELEM_UNREF(l->md);
+    GRPC_MDELEM_UNREF(exec_ctx, l->md);
   }
 }
 
@@ -140,8 +141,10 @@ void grpc_metadata_batch_move(grpc_metadata_batch *dst,
   memset(src, 0, sizeof(grpc_metadata_batch));
 }
 
-void grpc_metadata_batch_filter(grpc_metadata_batch *batch,
-                                grpc_mdelem *(*filter)(void *user_data,
+void grpc_metadata_batch_filter(grpc_exec_ctx *exec_ctx,
+                                grpc_metadata_batch *batch,
+                                grpc_mdelem *(*filter)(grpc_exec_ctx *exec_ctx,
+                                                       void *user_data,
                                                        grpc_mdelem *elem),
                                 void *user_data) {
   grpc_linked_mdelem *l;
@@ -152,7 +155,7 @@ void grpc_metadata_batch_filter(grpc_metadata_batch *batch,
   assert_valid_list(&batch->list);
   for (l = batch->list.head; l; l = next) {
     grpc_mdelem *orig = l->md;
-    grpc_mdelem *filt = filter(user_data, orig);
+    grpc_mdelem *filt = filter(exec_ctx, user_data, orig);
     next = l->next;
     if (filt == NULL) {
       if (l->prev) {
@@ -168,9 +171,9 @@ void grpc_metadata_batch_filter(grpc_metadata_batch *batch,
         batch->list.tail = l->prev;
       }
       assert_valid_list(&batch->list);
-      GRPC_MDELEM_UNREF(l->md);
+      GRPC_MDELEM_UNREF(exec_ctx, l->md);
     } else if (filt != orig) {
-      GRPC_MDELEM_UNREF(orig);
+      GRPC_MDELEM_UNREF(exec_ctx, orig);
       l->md = filt;
     }
   }
@@ -179,13 +182,15 @@ void grpc_metadata_batch_filter(grpc_metadata_batch *batch,
   GPR_TIMER_END("grpc_metadata_batch_filter", 0);
 }
 
-static grpc_mdelem *no_metadata_for_you(void *user_data, grpc_mdelem *elem) {
+static grpc_mdelem *no_metadata_for_you(grpc_exec_ctx *exec_ctx,
+                                        void *user_data, grpc_mdelem *elem) {
   return NULL;
 }
 
-void grpc_metadata_batch_clear(grpc_metadata_batch *batch) {
+void grpc_metadata_batch_clear(grpc_exec_ctx *exec_ctx,
+                               grpc_metadata_batch *batch) {
   batch->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
-  grpc_metadata_batch_filter(batch, no_metadata_for_you, NULL);
+  grpc_metadata_batch_filter(exec_ctx, batch, no_metadata_for_you, NULL);
 }
 
 bool grpc_metadata_batch_is_empty(grpc_metadata_batch *batch) {
diff --git a/src/core/lib/transport/metadata_batch.h b/src/core/lib/transport/metadata_batch.h
index 7a9ccb4bc854b21238784e4eb7cdeb759ff8868f..c0bd5174abb97fe19efb7fa0697b2bccb2656780 100644
--- a/src/core/lib/transport/metadata_batch.h
+++ b/src/core/lib/transport/metadata_batch.h
@@ -68,8 +68,10 @@ typedef struct grpc_metadata_batch {
 } grpc_metadata_batch;
 
 void grpc_metadata_batch_init(grpc_metadata_batch *batch);
-void grpc_metadata_batch_destroy(grpc_metadata_batch *batch);
-void grpc_metadata_batch_clear(grpc_metadata_batch *batch);
+void grpc_metadata_batch_destroy(grpc_exec_ctx *exec_ctx,
+                                 grpc_metadata_batch *batch);
+void grpc_metadata_batch_clear(grpc_exec_ctx *exec_ctx,
+                               grpc_metadata_batch *batch);
 bool grpc_metadata_batch_is_empty(grpc_metadata_batch *batch);
 
 /* Returns the transport size of the batch. */
@@ -118,8 +120,10 @@ void grpc_metadata_batch_add_tail(grpc_metadata_batch *batch,
     The return value from \a filter will be substituted for the
     grpc_mdelem passed to \a filter. If \a filter returns NULL,
     the element will be moved to the garbage list. */
-void grpc_metadata_batch_filter(grpc_metadata_batch *batch,
-                                grpc_mdelem *(*filter)(void *user_data,
+void grpc_metadata_batch_filter(grpc_exec_ctx *exec_ctx,
+                                grpc_metadata_batch *batch,
+                                grpc_mdelem *(*filter)(grpc_exec_ctx *exec_ctx,
+                                                       void *user_data,
                                                        grpc_mdelem *elem),
                                 void *user_data);
 
diff --git a/src/core/lib/transport/method_config.c b/src/core/lib/transport/method_config.c
new file mode 100644
index 0000000000000000000000000000000000000000..25fb54b37dbfe8f61b65388de356a78cb5bded7a
--- /dev/null
+++ b/src/core/lib/transport/method_config.c
@@ -0,0 +1,347 @@
+//
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+#include "src/core/lib/transport/method_config.h"
+
+#include <string.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/transport/mdstr_hash_table.h"
+#include "src/core/lib/transport/metadata.h"
+
+//
+// grpc_method_config
+//
+
+// bool vtable
+
+static void* bool_copy(void* valuep) {
+  bool value = *(bool*)valuep;
+  bool* new_value = gpr_malloc(sizeof(bool));
+  *new_value = value;
+  return new_value;
+}
+
+static int bool_cmp(void* v1, void* v2) {
+  bool b1 = *(bool*)v1;
+  bool b2 = *(bool*)v2;
+  if (!b1 && b2) return -1;
+  if (b1 && !b2) return 1;
+  return 0;
+}
+
+static void free_mem(grpc_exec_ctx* exec_ctx, void* p) { gpr_free(p); }
+
+static grpc_mdstr_hash_table_vtable bool_vtable = {free_mem, bool_copy,
+                                                   bool_cmp};
+
+// timespec vtable
+
+static void* timespec_copy(void* valuep) {
+  gpr_timespec value = *(gpr_timespec*)valuep;
+  gpr_timespec* new_value = gpr_malloc(sizeof(gpr_timespec));
+  *new_value = value;
+  return new_value;
+}
+
+static int timespec_cmp(void* v1, void* v2) {
+  return gpr_time_cmp(*(gpr_timespec*)v1, *(gpr_timespec*)v2);
+}
+
+static grpc_mdstr_hash_table_vtable timespec_vtable = {free_mem, timespec_copy,
+                                                       timespec_cmp};
+
+// int32 vtable
+
+static void* int32_copy(void* valuep) {
+  int32_t value = *(int32_t*)valuep;
+  int32_t* new_value = gpr_malloc(sizeof(int32_t));
+  *new_value = value;
+  return new_value;
+}
+
+static int int32_cmp(void* v1, void* v2) {
+  int32_t i1 = *(int32_t*)v1;
+  int32_t i2 = *(int32_t*)v2;
+  if (i1 < i2) return -1;
+  if (i1 > i2) return 1;
+  return 0;
+}
+
+static grpc_mdstr_hash_table_vtable int32_vtable = {free_mem, int32_copy,
+                                                    int32_cmp};
+
+// Hash table keys.
+#define GRPC_METHOD_CONFIG_WAIT_FOR_READY "grpc.wait_for_ready"  // bool
+#define GRPC_METHOD_CONFIG_TIMEOUT "grpc.timeout"                // gpr_timespec
+#define GRPC_METHOD_CONFIG_MAX_REQUEST_MESSAGE_BYTES \
+  "grpc.max_request_message_bytes"  // int32
+#define GRPC_METHOD_CONFIG_MAX_RESPONSE_MESSAGE_BYTES \
+  "grpc.max_response_message_bytes"  // int32
+
+struct grpc_method_config {
+  grpc_mdstr_hash_table* table;
+  grpc_mdstr* wait_for_ready_key;
+  grpc_mdstr* timeout_key;
+  grpc_mdstr* max_request_message_bytes_key;
+  grpc_mdstr* max_response_message_bytes_key;
+};
+
+grpc_method_config* grpc_method_config_create(
+    bool* wait_for_ready, gpr_timespec* timeout,
+    int32_t* max_request_message_bytes, int32_t* max_response_message_bytes) {
+  grpc_method_config* method_config = gpr_malloc(sizeof(grpc_method_config));
+  memset(method_config, 0, sizeof(grpc_method_config));
+  method_config->wait_for_ready_key =
+      grpc_mdstr_from_string(GRPC_METHOD_CONFIG_WAIT_FOR_READY);
+  method_config->timeout_key =
+      grpc_mdstr_from_string(GRPC_METHOD_CONFIG_TIMEOUT);
+  method_config->max_request_message_bytes_key =
+      grpc_mdstr_from_string(GRPC_METHOD_CONFIG_MAX_REQUEST_MESSAGE_BYTES);
+  method_config->max_response_message_bytes_key =
+      grpc_mdstr_from_string(GRPC_METHOD_CONFIG_MAX_RESPONSE_MESSAGE_BYTES);
+  grpc_mdstr_hash_table_entry entries[4];
+  size_t num_entries = 0;
+  if (wait_for_ready != NULL) {
+    entries[num_entries].key = method_config->wait_for_ready_key;
+    entries[num_entries].value = wait_for_ready;
+    entries[num_entries].vtable = &bool_vtable;
+    ++num_entries;
+  }
+  if (timeout != NULL) {
+    entries[num_entries].key = method_config->timeout_key;
+    entries[num_entries].value = timeout;
+    entries[num_entries].vtable = &timespec_vtable;
+    ++num_entries;
+  }
+  if (max_request_message_bytes != NULL) {
+    entries[num_entries].key = method_config->max_request_message_bytes_key;
+    entries[num_entries].value = max_request_message_bytes;
+    entries[num_entries].vtable = &int32_vtable;
+    ++num_entries;
+  }
+  if (max_response_message_bytes != NULL) {
+    entries[num_entries].key = method_config->max_response_message_bytes_key;
+    entries[num_entries].value = max_response_message_bytes;
+    entries[num_entries].vtable = &int32_vtable;
+    ++num_entries;
+  }
+  method_config->table = grpc_mdstr_hash_table_create(num_entries, entries);
+  return method_config;
+}
+
+grpc_method_config* grpc_method_config_ref(grpc_method_config* method_config) {
+  grpc_mdstr_hash_table_ref(method_config->table);
+  return method_config;
+}
+
+void grpc_method_config_unref(grpc_exec_ctx* exec_ctx,
+                              grpc_method_config* method_config) {
+  if (grpc_mdstr_hash_table_unref(exec_ctx, method_config->table)) {
+    GRPC_MDSTR_UNREF(exec_ctx, method_config->wait_for_ready_key);
+    GRPC_MDSTR_UNREF(exec_ctx, method_config->timeout_key);
+    GRPC_MDSTR_UNREF(exec_ctx, method_config->max_request_message_bytes_key);
+    GRPC_MDSTR_UNREF(exec_ctx, method_config->max_response_message_bytes_key);
+    gpr_free(method_config);
+  }
+}
+
+int grpc_method_config_cmp(const grpc_method_config* method_config1,
+                           const grpc_method_config* method_config2) {
+  return grpc_mdstr_hash_table_cmp(method_config1->table,
+                                   method_config2->table);
+}
+
+const bool* grpc_method_config_get_wait_for_ready(
+    const grpc_method_config* method_config) {
+  return grpc_mdstr_hash_table_get(method_config->table,
+                                   method_config->wait_for_ready_key);
+}
+
+const gpr_timespec* grpc_method_config_get_timeout(
+    const grpc_method_config* method_config) {
+  return grpc_mdstr_hash_table_get(method_config->table,
+                                   method_config->timeout_key);
+}
+
+const int32_t* grpc_method_config_get_max_request_message_bytes(
+    const grpc_method_config* method_config) {
+  return grpc_mdstr_hash_table_get(
+      method_config->table, method_config->max_request_message_bytes_key);
+}
+
+const int32_t* grpc_method_config_get_max_response_message_bytes(
+    const grpc_method_config* method_config) {
+  return grpc_mdstr_hash_table_get(
+      method_config->table, method_config->max_response_message_bytes_key);
+}
+
+//
+// grpc_method_config_table
+//
+
+static void method_config_unref(grpc_exec_ctx* exec_ctx, void* valuep) {
+  grpc_method_config_unref(exec_ctx, valuep);
+}
+
+static void* method_config_ref(void* valuep) {
+  return grpc_method_config_ref(valuep);
+}
+
+static int method_config_cmp(void* valuep1, void* valuep2) {
+  return grpc_method_config_cmp(valuep1, valuep2);
+}
+
+static const grpc_mdstr_hash_table_vtable method_config_table_vtable = {
+    method_config_unref, method_config_ref, method_config_cmp};
+
+grpc_method_config_table* grpc_method_config_table_create(
+    size_t num_entries, grpc_method_config_table_entry* entries) {
+  grpc_mdstr_hash_table_entry* hash_table_entries =
+      gpr_malloc(sizeof(grpc_mdstr_hash_table_entry) * num_entries);
+  for (size_t i = 0; i < num_entries; ++i) {
+    hash_table_entries[i].key = entries[i].method_name;
+    hash_table_entries[i].value = entries[i].method_config;
+    hash_table_entries[i].vtable = &method_config_table_vtable;
+  }
+  grpc_method_config_table* method_config_table =
+      grpc_mdstr_hash_table_create(num_entries, hash_table_entries);
+  gpr_free(hash_table_entries);
+  return method_config_table;
+}
+
+grpc_method_config_table* grpc_method_config_table_ref(
+    grpc_method_config_table* table) {
+  return grpc_mdstr_hash_table_ref(table);
+}
+
+void grpc_method_config_table_unref(grpc_exec_ctx* exec_ctx,
+                                    grpc_method_config_table* table) {
+  grpc_mdstr_hash_table_unref(exec_ctx, table);
+}
+
+int grpc_method_config_table_cmp(const grpc_method_config_table* table1,
+                                 const grpc_method_config_table* table2) {
+  return grpc_mdstr_hash_table_cmp(table1, table2);
+}
+
+void* grpc_method_config_table_get(grpc_exec_ctx* exec_ctx,
+                                   const grpc_mdstr_hash_table* table,
+                                   const grpc_mdstr* path) {
+  void* value = grpc_mdstr_hash_table_get(table, path);
+  // If we didn't find a match for the path, try looking for a wildcard
+  // entry (i.e., change "/service/method" to "/service/*").
+  if (value == NULL) {
+    const char* path_str = grpc_mdstr_as_c_string(path);
+    const char* sep = strrchr(path_str, '/') + 1;
+    const size_t len = (size_t)(sep - path_str);
+    char* buf = gpr_malloc(len + 2);  // '*' and NUL
+    memcpy(buf, path_str, len);
+    buf[len] = '*';
+    buf[len + 1] = '\0';
+    grpc_mdstr* wildcard_path = grpc_mdstr_from_string(buf);
+    gpr_free(buf);
+    value = grpc_mdstr_hash_table_get(table, wildcard_path);
+    GRPC_MDSTR_UNREF(exec_ctx, wildcard_path);
+  }
+  return value;
+}
+
+static void* copy_arg(void* p) { return grpc_method_config_table_ref(p); }
+
+static void destroy_arg(grpc_exec_ctx* exec_ctx, void* p) {
+  grpc_method_config_table_unref(exec_ctx, p);
+}
+
+static int cmp_arg(void* p1, void* p2) {
+  return grpc_method_config_table_cmp(p1, p2);
+}
+
+static grpc_arg_pointer_vtable arg_vtable = {copy_arg, destroy_arg, cmp_arg};
+
+grpc_arg grpc_method_config_table_create_channel_arg(
+    grpc_method_config_table* table) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_POINTER;
+  arg.key = GRPC_ARG_SERVICE_CONFIG;
+  arg.value.pointer.p = table;
+  arg.value.pointer.vtable = &arg_vtable;
+  return arg;
+}
+
+// State used by convert_entry() below.
+typedef struct conversion_state {
+  void* (*convert_value)(const grpc_method_config* method_config);
+  const grpc_mdstr_hash_table_vtable* vtable;
+  size_t num_entries;
+  grpc_mdstr_hash_table_entry* entries;
+} conversion_state;
+
+// A function to be passed to grpc_mdstr_hash_table_iterate() to create
+// a copy of the entries.
+static void convert_entry(const grpc_mdstr_hash_table_entry* entry,
+                          void* user_data) {
+  conversion_state* state = user_data;
+  state->entries[state->num_entries].key = GRPC_MDSTR_REF(entry->key);
+  state->entries[state->num_entries].value = state->convert_value(entry->value);
+  state->entries[state->num_entries].vtable = state->vtable;
+  ++state->num_entries;
+}
+
+grpc_mdstr_hash_table* grpc_method_config_table_convert(
+    grpc_exec_ctx* exec_ctx, const grpc_method_config_table* table,
+    void* (*convert_value)(const grpc_method_config* method_config),
+    const grpc_mdstr_hash_table_vtable* vtable) {
+  // Create an array of the entries in the table with converted values.
+  conversion_state state;
+  state.convert_value = convert_value;
+  state.vtable = vtable;
+  state.num_entries = 0;
+  state.entries = gpr_malloc(sizeof(grpc_mdstr_hash_table_entry) *
+                             grpc_mdstr_hash_table_num_entries(table));
+  grpc_mdstr_hash_table_iterate(table, convert_entry, &state);
+  // Create a new table based on the array we just constructed.
+  grpc_mdstr_hash_table* new_table =
+      grpc_mdstr_hash_table_create(state.num_entries, state.entries);
+  // Clean up the array.
+  for (size_t i = 0; i < state.num_entries; ++i) {
+    GRPC_MDSTR_UNREF(exec_ctx, state.entries[i].key);
+    vtable->destroy_value(exec_ctx, state.entries[i].value);
+  }
+  gpr_free(state.entries);
+  // Return the new table.
+  return new_table;
+}
diff --git a/src/core/lib/transport/method_config.h b/src/core/lib/transport/method_config.h
new file mode 100644
index 0000000000000000000000000000000000000000..d17a493fd4d99cce28dac4723a71ee9713ee31c2
--- /dev/null
+++ b/src/core/lib/transport/method_config.h
@@ -0,0 +1,139 @@
+//
+// Copyright 2016, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_METHOD_CONFIG_H
+#define GRPC_CORE_LIB_TRANSPORT_METHOD_CONFIG_H
+
+#include <stdbool.h>
+
+#include <grpc/impl/codegen/gpr_types.h>
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/transport/mdstr_hash_table.h"
+#include "src/core/lib/transport/metadata.h"
+
+/// Per-method configuration.
+typedef struct grpc_method_config grpc_method_config;
+
+/// Creates a grpc_method_config with the specified parameters.
+/// Any parameter may be NULL to indicate that the value is unset.
+///
+/// \a wait_for_ready indicates whether the client should wait until the
+/// request deadline for the channel to become ready, even if there is a
+/// temporary failure before the deadline while attempting to connect.
+///
+/// \a timeout indicates the timeout for calls.
+///
+/// \a max_request_message_bytes and \a max_response_message_bytes
+/// indicate the maximum sizes of the request (checked when sending) and
+/// response (checked when receiving) messages.
+grpc_method_config* grpc_method_config_create(
+    bool* wait_for_ready, gpr_timespec* timeout,
+    int32_t* max_request_message_bytes, int32_t* max_response_message_bytes);
+
+grpc_method_config* grpc_method_config_ref(grpc_method_config* method_config);
+void grpc_method_config_unref(grpc_exec_ctx* exec_ctx,
+                              grpc_method_config* method_config);
+
+/// Compares two grpc_method_configs.
+/// The sort order is stable but undefined.
+int grpc_method_config_cmp(const grpc_method_config* method_config1,
+                           const grpc_method_config* method_config2);
+
+/// These methods return NULL if the requested field is unset.
+/// The caller does NOT take ownership of the result.
+const bool* grpc_method_config_get_wait_for_ready(
+    const grpc_method_config* method_config);
+const gpr_timespec* grpc_method_config_get_timeout(
+    const grpc_method_config* method_config);
+const int32_t* grpc_method_config_get_max_request_message_bytes(
+    const grpc_method_config* method_config);
+const int32_t* grpc_method_config_get_max_response_message_bytes(
+    const grpc_method_config* method_config);
+
+/// A table of method configs.
+typedef grpc_mdstr_hash_table grpc_method_config_table;
+
+typedef struct grpc_method_config_table_entry {
+  /// The name is of one of the following forms:
+  ///   service/method -- specifies exact service and method name
+  ///   service/*      -- matches all methods for the specified service
+  grpc_mdstr* method_name;
+  grpc_method_config* method_config;
+} grpc_method_config_table_entry;
+
+/// Takes new references to all keys and values in \a entries.
+grpc_method_config_table* grpc_method_config_table_create(
+    size_t num_entries, grpc_method_config_table_entry* entries);
+
+grpc_method_config_table* grpc_method_config_table_ref(
+    grpc_method_config_table* table);
+void grpc_method_config_table_unref(grpc_exec_ctx* exec_ctx,
+                                    grpc_method_config_table* table);
+
+/// Compares two grpc_method_config_tables.
+/// The sort order is stable but undefined.
+int grpc_method_config_table_cmp(const grpc_method_config_table* table1,
+                                 const grpc_method_config_table* table2);
+
+/// Gets the method config for the specified \a path, which should be of
+/// the form "/service/method".
+/// Returns NULL if the method has no config.
+/// Caller does NOT own a reference to the result.
+///
+/// Note: This returns a void* instead of a grpc_method_config* so that
+/// it can also be used for tables constructed via
+/// grpc_method_config_table_convert().
+void* grpc_method_config_table_get(grpc_exec_ctx* exec_ctx,
+                                   const grpc_mdstr_hash_table* table,
+                                   const grpc_mdstr* path);
+
+/// Returns a channel arg containing \a table.
+grpc_arg grpc_method_config_table_create_channel_arg(
+    grpc_method_config_table* table);
+
+/// Generates a new table from \a table whose values are converted to a
+/// new form via the \a convert_value function.  The new table will use
+/// \a vtable for its values.
+///
+/// This is generally used to convert the table's value type from
+/// grpc_method_config to a simple struct containing only the parameters
+/// relevant to a particular filter, thus avoiding the need for a hash
+/// table lookup on the fast path.  In that scenario, \a convert_value
+/// will return a new instance of the struct containing the values from
+/// the grpc_method_config, and \a vtable provides the methods for
+/// operating on the struct type.
+grpc_mdstr_hash_table* grpc_method_config_table_convert(
+    grpc_exec_ctx* exec_ctx, const grpc_method_config_table* table,
+    void* (*convert_value)(const grpc_method_config* method_config),
+    const grpc_mdstr_hash_table_vtable* vtable);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_METHOD_CONFIG_H */
diff --git a/src/core/lib/transport/pid_controller.h b/src/core/lib/transport/pid_controller.h
index 059b5b08346a48b1f9d13e9fb07584799e3a63f3..83c82d64713e8df6024d66f1cdbf5ea4b7bccc04 100644
--- a/src/core/lib/transport/pid_controller.h
+++ b/src/core/lib/transport/pid_controller.h
@@ -61,4 +61,4 @@ void grpc_pid_controller_reset(grpc_pid_controller *pid_controller);
 double grpc_pid_controller_update(grpc_pid_controller *pid_controller,
                                   double error, double dt);
 
-#endif
+#endif /* GRPC_CORE_LIB_TRANSPORT_PID_CONTROLLER_H */
diff --git a/src/core/lib/transport/service_config.c b/src/core/lib/transport/service_config.c
index 2e2b59e3f760c7b2fdd5103653bb945734248cb7..552d3ec85687dd20c5dd2d70a935e88705704bf9 100644
--- a/src/core/lib/transport/service_config.c
+++ b/src/core/lib/transport/service_config.c
@@ -146,7 +146,8 @@ static char* parse_json_method_name(grpc_json* json) {
 // each name found, incrementing \a idx for each entry added.
 // Returns false on error.
 static bool parse_json_method_config(
-    grpc_json* json, void* (*create_value)(const grpc_json* method_config_json),
+    grpc_exec_ctx* exec_ctx, grpc_json* json,
+    void* (*create_value)(const grpc_json* method_config_json),
     const grpc_mdstr_hash_table_vtable* vtable,
     grpc_mdstr_hash_table_entry* entries, size_t* idx) {
   // Construct value.
@@ -176,13 +177,13 @@ static bool parse_json_method_config(
   }
   success = true;
 done:
-  vtable->destroy_value(method_config);
+  vtable->destroy_value(exec_ctx, method_config);
   gpr_strvec_destroy(&paths);
   return success;
 }
 
 grpc_mdstr_hash_table* grpc_service_config_create_method_config_table(
-    const grpc_service_config* service_config,
+    grpc_exec_ctx* exec_ctx, const grpc_service_config* service_config,
     void* (*create_value)(const grpc_json* method_config_json),
     const grpc_mdstr_hash_table_vtable* vtable) {
   const grpc_json* json = service_config->json_tree;
@@ -205,8 +206,8 @@ grpc_mdstr_hash_table* grpc_service_config_create_method_config_table(
       size_t idx = 0;
       for (grpc_json* method = field->child; method != NULL;
            method = method->next) {
-        if (!parse_json_method_config(method, create_value, vtable, entries,
-                                      &idx)) {
+        if (!parse_json_method_config(exec_ctx, method, create_value, vtable,
+                                      entries, &idx)) {
           return NULL;
         }
       }
@@ -219,15 +220,16 @@ grpc_mdstr_hash_table* grpc_service_config_create_method_config_table(
     method_config_table = grpc_mdstr_hash_table_create(num_entries, entries);
     // Clean up.
     for (size_t i = 0; i < num_entries; ++i) {
-      GRPC_MDSTR_UNREF(entries[i].key);
-      vtable->destroy_value(entries[i].value);
+      GRPC_MDSTR_UNREF(exec_ctx, entries[i].key);
+      vtable->destroy_value(exec_ctx, entries[i].value);
     }
     gpr_free(entries);
   }
   return method_config_table;
 }
 
-void* grpc_method_config_table_get(const grpc_mdstr_hash_table* table,
+void* grpc_method_config_table_get(grpc_exec_ctx* exec_ctx,
+                                   const grpc_mdstr_hash_table* table,
                                    const grpc_mdstr* path) {
   void* value = grpc_mdstr_hash_table_get(table, path);
   // If we didn't find a match for the path, try looking for a wildcard
@@ -243,7 +245,7 @@ void* grpc_method_config_table_get(const grpc_mdstr_hash_table* table,
     grpc_mdstr* wildcard_path = grpc_mdstr_from_string(buf);
     gpr_free(buf);
     value = grpc_mdstr_hash_table_get(table, wildcard_path);
-    GRPC_MDSTR_UNREF(wildcard_path);
+    GRPC_MDSTR_UNREF(exec_ctx, wildcard_path);
   }
   return value;
 }
diff --git a/src/core/lib/transport/service_config.h b/src/core/lib/transport/service_config.h
index 2ffe4751938f7e14ba9843e5b38269388d100973..f0897170fa62466c564c0a4e803b87f3c8d74ed7 100644
--- a/src/core/lib/transport/service_config.h
+++ b/src/core/lib/transport/service_config.h
@@ -54,7 +54,7 @@ const char* grpc_service_config_get_lb_policy_name(
 /// \a vtable provides methods used to manage the values.
 /// Returns NULL on error.
 grpc_mdstr_hash_table* grpc_service_config_create_method_config_table(
-    const grpc_service_config* service_config,
+    grpc_exec_ctx* exec_ctx, const grpc_service_config* service_config,
     void* (*create_value)(const grpc_json* method_config_json),
     const grpc_mdstr_hash_table_vtable* vtable);
 
@@ -64,7 +64,8 @@ grpc_mdstr_hash_table* grpc_service_config_create_method_config_table(
 /// the form "/service/method".
 /// Returns NULL if the method has no config.
 /// Caller does NOT own a reference to the result.
-void* grpc_method_config_table_get(const grpc_mdstr_hash_table* table,
+void* grpc_method_config_table_get(grpc_exec_ctx* exec_ctx,
+                                   const grpc_mdstr_hash_table* table,
                                    const grpc_mdstr* path);
 
 #endif /* GRPC_CORE_LIB_TRANSPORT_SERVICE_CONFIG_H */
diff --git a/src/core/lib/transport/transport.c b/src/core/lib/transport/transport.c
index b448126da8909f592b16c23264095ea3455c8b50..055edbb39fcc5526da8e3fc8fbc6153ff4c4c5cb 100644
--- a/src/core/lib/transport/transport.c
+++ b/src/core/lib/transport/transport.c
@@ -40,6 +40,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/transport_impl.h"
@@ -68,7 +69,7 @@ void grpc_stream_unref(grpc_exec_ctx *exec_ctx,
                        grpc_stream_refcount *refcount) {
 #endif
   if (gpr_unref(&refcount->refs)) {
-    grpc_exec_ctx_sched(exec_ctx, &refcount->destroy, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, &refcount->destroy, GRPC_ERROR_NONE);
   }
 }
 
@@ -82,7 +83,7 @@ void grpc_stream_ref_init(grpc_stream_refcount *refcount, int initial_refs,
                           grpc_iomgr_cb_func cb, void *cb_arg) {
 #endif
   gpr_ref_init(&refcount->refs, initial_refs);
-  grpc_closure_init(&refcount->destroy, cb, cb_arg);
+  grpc_closure_init(&refcount->destroy, cb, cb_arg, grpc_schedule_on_exec_ctx);
 }
 
 static void move64(uint64_t *from, uint64_t *to) {
@@ -168,11 +169,10 @@ grpc_endpoint *grpc_transport_get_endpoint(grpc_exec_ctx *exec_ctx,
 void grpc_transport_stream_op_finish_with_failure(grpc_exec_ctx *exec_ctx,
                                                   grpc_transport_stream_op *op,
                                                   grpc_error *error) {
-  grpc_exec_ctx_sched(exec_ctx, op->recv_message_ready, GRPC_ERROR_REF(error),
-                      NULL);
-  grpc_exec_ctx_sched(exec_ctx, op->recv_initial_metadata_ready,
-                      GRPC_ERROR_REF(error), NULL);
-  grpc_exec_ctx_sched(exec_ctx, op->on_complete, error, NULL);
+  grpc_closure_sched(exec_ctx, op->recv_message_ready, GRPC_ERROR_REF(error));
+  grpc_closure_sched(exec_ctx, op->recv_initial_metadata_ready,
+                     GRPC_ERROR_REF(error));
+  grpc_closure_sched(exec_ctx, op->on_complete, error);
 }
 
 typedef struct {
@@ -196,7 +196,8 @@ static void add_error(grpc_transport_stream_op *op, grpc_error **which,
   cmd = gpr_malloc(sizeof(*cmd));
   cmd->error = error;
   cmd->then_call = op->on_complete;
-  grpc_closure_init(&cmd->closure, free_message, cmd);
+  grpc_closure_init(&cmd->closure, free_message, cmd,
+                    grpc_schedule_on_exec_ctx);
   op->on_complete = &cmd->closure;
   *which = error;
 }
@@ -212,12 +213,12 @@ void grpc_transport_stream_op_add_cancellation(grpc_transport_stream_op *op,
 }
 
 void grpc_transport_stream_op_add_cancellation_with_message(
-    grpc_transport_stream_op *op, grpc_status_code status,
-    grpc_slice *optional_message) {
+    grpc_exec_ctx *exec_ctx, grpc_transport_stream_op *op,
+    grpc_status_code status, grpc_slice *optional_message) {
   GPR_ASSERT(status != GRPC_STATUS_OK);
   if (op->cancel_error != GRPC_ERROR_NONE) {
     if (optional_message) {
-      grpc_slice_unref(*optional_message);
+      grpc_slice_unref_internal(exec_ctx, *optional_message);
     }
     return;
   }
@@ -227,7 +228,7 @@ void grpc_transport_stream_op_add_cancellation_with_message(
     error = grpc_error_set_str(GRPC_ERROR_CREATE(msg),
                                GRPC_ERROR_STR_GRPC_MESSAGE, msg);
     gpr_free(msg);
-    grpc_slice_unref(*optional_message);
+    grpc_slice_unref_internal(exec_ctx, *optional_message);
   } else {
     error = GRPC_ERROR_CREATE("Call cancelled");
   }
@@ -235,14 +236,15 @@ void grpc_transport_stream_op_add_cancellation_with_message(
   add_error(op, &op->cancel_error, error);
 }
 
-void grpc_transport_stream_op_add_close(grpc_transport_stream_op *op,
+void grpc_transport_stream_op_add_close(grpc_exec_ctx *exec_ctx,
+                                        grpc_transport_stream_op *op,
                                         grpc_status_code status,
                                         grpc_slice *optional_message) {
   GPR_ASSERT(status != GRPC_STATUS_OK);
   if (op->cancel_error != GRPC_ERROR_NONE ||
       op->close_error != GRPC_ERROR_NONE) {
     if (optional_message) {
-      grpc_slice_unref(*optional_message);
+      grpc_slice_unref_internal(exec_ctx, *optional_message);
     }
     return;
   }
@@ -252,7 +254,7 @@ void grpc_transport_stream_op_add_close(grpc_transport_stream_op *op,
     error = grpc_error_set_str(GRPC_ERROR_CREATE(msg),
                                GRPC_ERROR_STR_GRPC_MESSAGE, msg);
     gpr_free(msg);
-    grpc_slice_unref(*optional_message);
+    grpc_slice_unref_internal(exec_ctx, *optional_message);
   } else {
     error = GRPC_ERROR_CREATE("Call force closed");
   }
@@ -269,14 +271,14 @@ typedef struct {
 static void destroy_made_transport_op(grpc_exec_ctx *exec_ctx, void *arg,
                                       grpc_error *error) {
   made_transport_op *op = arg;
-  grpc_exec_ctx_sched(exec_ctx, op->inner_on_complete, GRPC_ERROR_REF(error),
-                      NULL);
+  grpc_closure_sched(exec_ctx, op->inner_on_complete, GRPC_ERROR_REF(error));
   gpr_free(op);
 }
 
 grpc_transport_op *grpc_make_transport_op(grpc_closure *on_complete) {
   made_transport_op *op = gpr_malloc(sizeof(*op));
-  grpc_closure_init(&op->outer_on_complete, destroy_made_transport_op, op);
+  grpc_closure_init(&op->outer_on_complete, destroy_made_transport_op, op,
+                    grpc_schedule_on_exec_ctx);
   op->inner_on_complete = on_complete;
   memset(&op->op, 0, sizeof(op->op));
   op->op.on_consumed = &op->outer_on_complete;
@@ -292,8 +294,7 @@ typedef struct {
 static void destroy_made_transport_stream_op(grpc_exec_ctx *exec_ctx, void *arg,
                                              grpc_error *error) {
   made_transport_stream_op *op = arg;
-  grpc_exec_ctx_sched(exec_ctx, op->inner_on_complete, GRPC_ERROR_REF(error),
-                      NULL);
+  grpc_closure_sched(exec_ctx, op->inner_on_complete, GRPC_ERROR_REF(error));
   gpr_free(op);
 }
 
@@ -301,7 +302,7 @@ grpc_transport_stream_op *grpc_make_transport_stream_op(
     grpc_closure *on_complete) {
   made_transport_stream_op *op = gpr_malloc(sizeof(*op));
   grpc_closure_init(&op->outer_on_complete, destroy_made_transport_stream_op,
-                    op);
+                    op, grpc_schedule_on_exec_ctx);
   op->inner_on_complete = on_complete;
   memset(&op->op, 0, sizeof(op->op));
   op->op.on_complete = &op->outer_on_complete;
diff --git a/src/core/lib/transport/transport.h b/src/core/lib/transport/transport.h
index 96c26749c878f7eeca4e4c07b8ab53c12127efd6..d1281830aa0394d594d54a02f18ea6656093c832 100644
--- a/src/core/lib/transport/transport.h
+++ b/src/core/lib/transport/transport.h
@@ -249,10 +249,11 @@ void grpc_transport_stream_op_add_cancellation(grpc_transport_stream_op *op,
                                                grpc_status_code status);
 
 void grpc_transport_stream_op_add_cancellation_with_message(
-    grpc_transport_stream_op *op, grpc_status_code status,
-    grpc_slice *optional_message);
+    grpc_exec_ctx *exec_ctx, grpc_transport_stream_op *op,
+    grpc_status_code status, grpc_slice *optional_message);
 
-void grpc_transport_stream_op_add_close(grpc_transport_stream_op *op,
+void grpc_transport_stream_op_add_close(grpc_exec_ctx *exec_ctx,
+                                        grpc_transport_stream_op *op,
                                         grpc_status_code status,
                                         grpc_slice *optional_message);
 
diff --git a/src/core/lib/tsi/README.md b/src/core/lib/tsi/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..3ca3c1ef38cc53080e2abf6e532203060ddf88fa
--- /dev/null
+++ b/src/core/lib/tsi/README.md
@@ -0,0 +1,2 @@
+# Transport Security Interface
+An abstraction library over crypto and auth modules (typically OpenSSL)
diff --git a/src/cpp/common/channel_arguments.cc b/src/cpp/common/channel_arguments.cc
index 0301b5b8ec813f8baa4d47b0d626a6f5955ceb7f..1fdd10613033f1f9208421f05bddc2121df28151 100644
--- a/src/cpp/common/channel_arguments.cc
+++ b/src/cpp/common/channel_arguments.cc
@@ -38,8 +38,11 @@
 #include <grpc++/resource_quota.h>
 #include <grpc/impl/codegen/grpc_types.h>
 #include <grpc/support/log.h>
+extern "C" {
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/iomgr/socket_mutator.h"
+}
 namespace grpc {
 
 ChannelArguments::ChannelArguments() {
@@ -94,13 +97,15 @@ void ChannelArguments::SetSocketMutator(grpc_socket_mutator* mutator) {
   }
   grpc_arg mutator_arg = grpc_socket_mutator_to_arg(mutator);
   bool replaced = false;
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   for (auto it = args_.begin(); it != args_.end(); ++it) {
     if (it->type == mutator_arg.type &&
         grpc::string(it->key) == grpc::string(mutator_arg.key)) {
-      it->value.pointer.vtable->destroy(it->value.pointer.p);
+      it->value.pointer.vtable->destroy(&exec_ctx, it->value.pointer.p);
       it->value.pointer = mutator_arg.value.pointer;
     }
   }
+  grpc_exec_ctx_finish(&exec_ctx);
   if (!replaced) {
     args_.push_back(mutator_arg);
   }
diff --git a/src/cpp/common/channel_filter.cc b/src/cpp/common/channel_filter.cc
index ad2c0f22950436aebc7c6f3ef779d1eb6e7b374c..c0dc9dd63e5a598a155f36b76ee4724974cafbd4 100644
--- a/src/cpp/common/channel_filter.cc
+++ b/src/cpp/common/channel_filter.cc
@@ -40,11 +40,12 @@ namespace grpc {
 
 // MetadataBatch
 
-grpc_linked_mdelem *MetadataBatch::AddMetadata(const string &key,
+grpc_linked_mdelem *MetadataBatch::AddMetadata(grpc_exec_ctx *exec_ctx,
+                                               const string &key,
                                                const string &value) {
   grpc_linked_mdelem *storage = new grpc_linked_mdelem;
   memset(storage, 0, sizeof(grpc_linked_mdelem));
-  storage->md = grpc_mdelem_from_strings(key.c_str(), value.c_str());
+  storage->md = grpc_mdelem_from_strings(exec_ctx, key.c_str(), value.c_str());
   grpc_metadata_batch_link_head(batch_, storage);
   return storage;
 }
@@ -89,7 +90,8 @@ std::vector<FilterRecord> *channel_filters;
 
 namespace {
 
-bool MaybeAddFilter(grpc_channel_stack_builder *builder, void *arg) {
+bool MaybeAddFilter(grpc_exec_ctx *exec_ctx,
+                    grpc_channel_stack_builder *builder, void *arg) {
   const FilterRecord &filter = *(FilterRecord *)arg;
   if (filter.include_filter) {
     const grpc_channel_args *args =
diff --git a/src/cpp/common/channel_filter.h b/src/cpp/common/channel_filter.h
index e420efc71c9b089701501789e1a070aa8de9fdf5..5de8f5e4631874018e74d31a1caa8a127d01d468 100644
--- a/src/cpp/common/channel_filter.h
+++ b/src/cpp/common/channel_filter.h
@@ -70,7 +70,8 @@ class MetadataBatch {
   /// Adds metadata and returns the newly allocated storage.
   /// The caller takes ownership of the result, which must exist for the
   /// lifetime of the gRPC call.
-  grpc_linked_mdelem *AddMetadata(const string &key, const string &value);
+  grpc_linked_mdelem *AddMetadata(grpc_exec_ctx *exec_ctx, const string &key,
+                                  const string &value);
 
   class const_iterator : public std::iterator<std::bidirectional_iterator_tag,
                                               const grpc_mdelem> {
@@ -216,12 +217,13 @@ class TransportStreamOp {
 /// Represents channel data.
 class ChannelData {
  public:
-  virtual ~ChannelData() {
-    if (peer_) gpr_free((void *)peer_);
-  }
+  virtual ~ChannelData() {}
 
-  /// Caller does NOT take ownership of result.
-  const char *peer() const { return peer_; }
+  /// Initializes the call data.
+  virtual grpc_error *Init(grpc_exec_ctx *exec_ctx,
+                           grpc_channel_element_args *args) {
+    return GRPC_ERROR_NONE;
+  }
 
   // TODO(roth): Find a way to avoid passing elem into these methods.
 
@@ -232,11 +234,7 @@ class ChannelData {
                        const grpc_channel_info *channel_info);
 
  protected:
-  /// Takes ownership of \a peer.
-  ChannelData(const grpc_channel_args &args, const char *peer) : peer_(peer) {}
-
- private:
-  const char *peer_;
+  ChannelData() {}
 };
 
 /// Represents call data.
@@ -245,7 +243,10 @@ class CallData {
   virtual ~CallData() {}
 
   /// Initializes the call data.
-  virtual grpc_error *Init() { return GRPC_ERROR_NONE; }
+  virtual grpc_error *Init(grpc_exec_ctx *exec_ctx, ChannelData *channel_data,
+                           grpc_call_element_args *args) {
+    return GRPC_ERROR_NONE;
+  }
 
   // TODO(roth): Find a way to avoid passing elem into these methods.
 
@@ -263,7 +264,7 @@ class CallData {
   virtual char *GetPeer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem);
 
  protected:
-  explicit CallData(const ChannelData &) {}
+  CallData() {}
 };
 
 namespace internal {
@@ -276,15 +277,11 @@ class ChannelFilter final {
  public:
   static const size_t channel_data_size = sizeof(ChannelDataType);
 
-  static void InitChannelElement(grpc_exec_ctx *exec_ctx,
-                                 grpc_channel_element *elem,
-                                 grpc_channel_element_args *args) {
-    const char *peer =
-        args->optional_transport
-            ? grpc_transport_get_peer(exec_ctx, args->optional_transport)
-            : nullptr;
-    // Construct the object in the already-allocated memory.
-    new (elem->channel_data) ChannelDataType(*args->channel_args, peer);
+  static grpc_error *InitChannelElement(grpc_exec_ctx *exec_ctx,
+                                        grpc_channel_element *elem,
+                                        grpc_channel_element_args *args) {
+    ChannelDataType *channel_data = new (elem->channel_data) ChannelDataType();
+    return channel_data->Init(exec_ctx, args);
   }
 
   static void DestroyChannelElement(grpc_exec_ctx *exec_ctx,
@@ -312,11 +309,10 @@ class ChannelFilter final {
   static grpc_error *InitCallElement(grpc_exec_ctx *exec_ctx,
                                      grpc_call_element *elem,
                                      grpc_call_element_args *args) {
-    const ChannelDataType &channel_data =
-        *(ChannelDataType *)elem->channel_data;
+    ChannelDataType *channel_data = (ChannelDataType *)elem->channel_data;
     // Construct the object in the already-allocated memory.
-    CallDataType *call_data = new (elem->call_data) CallDataType(channel_data);
-    return call_data->Init();
+    CallDataType *call_data = new (elem->call_data) CallDataType();
+    return call_data->Init(exec_ctx, channel_data, args);
   }
 
   static void DestroyCallElement(grpc_exec_ctx *exec_ctx,
diff --git a/src/csharp/Grpc.Examples/MathGrpc.cs b/src/csharp/Grpc.Examples/MathGrpc.cs
index 8b431c72184fb397c9f7c3a8f17615e37b161f26..3364b8ce8ecabcfb0d8404a5011f45d283f363a5 100644
--- a/src/csharp/Grpc.Examples/MathGrpc.cs
+++ b/src/csharp/Grpc.Examples/MathGrpc.cs
@@ -85,39 +85,53 @@ namespace Math {
     public abstract partial class MathBase
     {
       /// <summary>
-      ///  Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
-      ///  and remainder.
+      /// Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
+      /// and remainder.
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Math.DivReply> Div(global::Math.DivArgs request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  DivMany accepts an arbitrary number of division args from the client stream
-      ///  and sends back the results in the reply stream.  The stream continues until
-      ///  the client closes its end; the server does the same after sending all the
-      ///  replies.  The stream ends immediately if either end aborts.
+      /// DivMany accepts an arbitrary number of division args from the client stream
+      /// and sends back the results in the reply stream.  The stream continues until
+      /// the client closes its end; the server does the same after sending all the
+      /// replies.  The stream ends immediately if either end aborts.
       /// </summary>
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task DivMany(IAsyncStreamReader<global::Math.DivArgs> requestStream, IServerStreamWriter<global::Math.DivReply> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  Fib generates numbers in the Fibonacci sequence.  If FibArgs.limit > 0, Fib
-      ///  generates up to limit numbers; otherwise it continues until the call is
-      ///  canceled.  Unlike Fib above, Fib has no final FibReply.
+      /// Fib generates numbers in the Fibonacci sequence.  If FibArgs.limit > 0, Fib
+      /// generates up to limit numbers; otherwise it continues until the call is
+      /// canceled.  Unlike Fib above, Fib has no final FibReply.
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task Fib(global::Math.FibArgs request, IServerStreamWriter<global::Math.Num> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  Sum sums a stream of numbers, returning the final result once the stream
-      ///  is closed.
+      /// Sum sums a stream of numbers, returning the final result once the stream
+      /// is closed.
       /// </summary>
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Math.Num> Sum(IAsyncStreamReader<global::Math.Num> requestStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
@@ -149,87 +163,123 @@ namespace Math {
       }
 
       /// <summary>
-      ///  Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
-      ///  and remainder.
+      /// Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
+      /// and remainder.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Math.DivReply Div(global::Math.DivArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return Div(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
-      ///  and remainder.
+      /// Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
+      /// and remainder.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Math.DivReply Div(global::Math.DivArgs request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_Div, null, options, request);
       }
       /// <summary>
-      ///  Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
-      ///  and remainder.
+      /// Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
+      /// and remainder.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Math.DivReply> DivAsync(global::Math.DivArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return DivAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
-      ///  and remainder.
+      /// Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
+      /// and remainder.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Math.DivReply> DivAsync(global::Math.DivArgs request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_Div, null, options, request);
       }
       /// <summary>
-      ///  DivMany accepts an arbitrary number of division args from the client stream
-      ///  and sends back the results in the reply stream.  The stream continues until
-      ///  the client closes its end; the server does the same after sending all the
-      ///  replies.  The stream ends immediately if either end aborts.
+      /// DivMany accepts an arbitrary number of division args from the client stream
+      /// and sends back the results in the reply stream.  The stream continues until
+      /// the client closes its end; the server does the same after sending all the
+      /// replies.  The stream ends immediately if either end aborts.
       /// </summary>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Math.DivArgs, global::Math.DivReply> DivMany(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return DivMany(new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  DivMany accepts an arbitrary number of division args from the client stream
-      ///  and sends back the results in the reply stream.  The stream continues until
-      ///  the client closes its end; the server does the same after sending all the
-      ///  replies.  The stream ends immediately if either end aborts.
+      /// DivMany accepts an arbitrary number of division args from the client stream
+      /// and sends back the results in the reply stream.  The stream continues until
+      /// the client closes its end; the server does the same after sending all the
+      /// replies.  The stream ends immediately if either end aborts.
       /// </summary>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Math.DivArgs, global::Math.DivReply> DivMany(CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_DivMany, null, options);
       }
       /// <summary>
-      ///  Fib generates numbers in the Fibonacci sequence.  If FibArgs.limit > 0, Fib
-      ///  generates up to limit numbers; otherwise it continues until the call is
-      ///  canceled.  Unlike Fib above, Fib has no final FibReply.
+      /// Fib generates numbers in the Fibonacci sequence.  If FibArgs.limit > 0, Fib
+      /// generates up to limit numbers; otherwise it continues until the call is
+      /// canceled.  Unlike Fib above, Fib has no final FibReply.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncServerStreamingCall<global::Math.Num> Fib(global::Math.FibArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return Fib(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Fib generates numbers in the Fibonacci sequence.  If FibArgs.limit > 0, Fib
-      ///  generates up to limit numbers; otherwise it continues until the call is
-      ///  canceled.  Unlike Fib above, Fib has no final FibReply.
+      /// Fib generates numbers in the Fibonacci sequence.  If FibArgs.limit > 0, Fib
+      /// generates up to limit numbers; otherwise it continues until the call is
+      /// canceled.  Unlike Fib above, Fib has no final FibReply.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncServerStreamingCall<global::Math.Num> Fib(global::Math.FibArgs request, CallOptions options)
       {
         return CallInvoker.AsyncServerStreamingCall(__Method_Fib, null, options, request);
       }
       /// <summary>
-      ///  Sum sums a stream of numbers, returning the final result once the stream
-      ///  is closed.
+      /// Sum sums a stream of numbers, returning the final result once the stream
+      /// is closed.
       /// </summary>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncClientStreamingCall<global::Math.Num, global::Math.Num> Sum(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return Sum(new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Sum sums a stream of numbers, returning the final result once the stream
-      ///  is closed.
+      /// Sum sums a stream of numbers, returning the final result once the stream
+      /// is closed.
       /// </summary>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncClientStreamingCall<global::Math.Num, global::Math.Num> Sum(CallOptions options)
       {
         return CallInvoker.AsyncClientStreamingCall(__Method_Sum, null, options);
@@ -242,6 +292,7 @@ namespace Math {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
     public static ServerServiceDefinition BindService(MathBase serviceImpl)
     {
       return ServerServiceDefinition.CreateBuilder()
diff --git a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
index ad5cf11b75ecbab3ce2455f476778c65472cef32..020c2df5657361428a974e9cb89578010078f39c 100644
--- a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
+++ b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
@@ -115,6 +115,7 @@ namespace Grpc.Health.V1 {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
     public static ServerServiceDefinition BindService(HealthBase serviceImpl)
     {
       return ServerServiceDefinition.CreateBuilder()
diff --git a/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs b/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
index d0bf0afc1d0715043d31bdfe5d137e2f25c49244..8b58622d5308860167c8dbc06709918e7ae84df6 100644
--- a/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
@@ -76,17 +76,24 @@ namespace Grpc.Testing {
     public abstract partial class MetricsServiceBase
     {
       /// <summary>
-      ///  Returns the values of all the gauges that are currently being maintained by
-      ///  the service
+      /// Returns the values of all the gauges that are currently being maintained by
+      /// the service
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task GetAllGauges(global::Grpc.Testing.EmptyMessage request, IServerStreamWriter<global::Grpc.Testing.GaugeResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  Returns the value of one gauge
+      /// Returns the value of one gauge
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.GaugeResponse> GetGauge(global::Grpc.Testing.GaugeRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
@@ -118,45 +125,69 @@ namespace Grpc.Testing {
       }
 
       /// <summary>
-      ///  Returns the values of all the gauges that are currently being maintained by
-      ///  the service
+      /// Returns the values of all the gauges that are currently being maintained by
+      /// the service
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncServerStreamingCall<global::Grpc.Testing.GaugeResponse> GetAllGauges(global::Grpc.Testing.EmptyMessage request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return GetAllGauges(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Returns the values of all the gauges that are currently being maintained by
-      ///  the service
+      /// Returns the values of all the gauges that are currently being maintained by
+      /// the service
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncServerStreamingCall<global::Grpc.Testing.GaugeResponse> GetAllGauges(global::Grpc.Testing.EmptyMessage request, CallOptions options)
       {
         return CallInvoker.AsyncServerStreamingCall(__Method_GetAllGauges, null, options, request);
       }
       /// <summary>
-      ///  Returns the value of one gauge
+      /// Returns the value of one gauge
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.GaugeResponse GetGauge(global::Grpc.Testing.GaugeRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return GetGauge(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Returns the value of one gauge
+      /// Returns the value of one gauge
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.GaugeResponse GetGauge(global::Grpc.Testing.GaugeRequest request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_GetGauge, null, options, request);
       }
       /// <summary>
-      ///  Returns the value of one gauge
+      /// Returns the value of one gauge
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.GaugeResponse> GetGaugeAsync(global::Grpc.Testing.GaugeRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return GetGaugeAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Returns the value of one gauge
+      /// Returns the value of one gauge
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.GaugeResponse> GetGaugeAsync(global::Grpc.Testing.GaugeRequest request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_GetGauge, null, options, request);
@@ -169,6 +200,7 @@ namespace Grpc.Testing {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
     public static ServerServiceDefinition BindService(MetricsServiceBase serviceImpl)
     {
       return ServerServiceDefinition.CreateBuilder()
diff --git a/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs b/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
index 3cc4ed9f3c3a489f642a9dbc906cb95615d83b26..5135d9ab66d18aa4abf151f9a493cba7258037f1 100644
--- a/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
@@ -71,18 +71,25 @@ namespace Grpc.Testing {
     public abstract partial class BenchmarkServiceBase
     {
       /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
+      /// One request followed by one response.
+      /// The server returns the client payload as-is.
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
+      /// One request followed by one response.
+      /// The server returns the client payload as-is.
       /// </summary>
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task StreamingCall(IAsyncStreamReader<global::Grpc.Testing.SimpleRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.SimpleResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
@@ -114,49 +121,71 @@ namespace Grpc.Testing {
       }
 
       /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
+      /// One request followed by one response.
+      /// The server returns the client payload as-is.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return UnaryCall(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
+      /// One request followed by one response.
+      /// The server returns the client payload as-is.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_UnaryCall, null, options, request);
       }
       /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
+      /// One request followed by one response.
+      /// The server returns the client payload as-is.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return UnaryCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
+      /// One request followed by one response.
+      /// The server returns the client payload as-is.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_UnaryCall, null, options, request);
       }
       /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
+      /// One request followed by one response.
+      /// The server returns the client payload as-is.
       /// </summary>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> StreamingCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return StreamingCall(new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
+      /// One request followed by one response.
+      /// The server returns the client payload as-is.
       /// </summary>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> StreamingCall(CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_StreamingCall, null, options);
@@ -169,6 +198,7 @@ namespace Grpc.Testing {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
     public static ServerServiceDefinition BindService(BenchmarkServiceBase serviceImpl)
     {
       return ServerServiceDefinition.CreateBuilder()
@@ -227,42 +257,56 @@ namespace Grpc.Testing {
     public abstract partial class WorkerServiceBase
     {
       /// <summary>
-      ///  Start server with specified workload.
-      ///  First request sent specifies the ServerConfig followed by ServerStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test server
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
+      /// Start server with specified workload.
+      /// First request sent specifies the ServerConfig followed by ServerStatus
+      /// response. After that, a "Mark" can be sent anytime to request the latest
+      /// stats. Closing the stream will initiate shutdown of the test server
+      /// and once the shutdown has finished, the OK status is sent to terminate
+      /// this RPC.
       /// </summary>
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task RunServer(IAsyncStreamReader<global::Grpc.Testing.ServerArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ServerStatus> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  Start client with specified workload.
-      ///  First request sent specifies the ClientConfig followed by ClientStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test client
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
+      /// Start client with specified workload.
+      /// First request sent specifies the ClientConfig followed by ClientStatus
+      /// response. After that, a "Mark" can be sent anytime to request the latest
+      /// stats. Closing the stream will initiate shutdown of the test client
+      /// and once the shutdown has finished, the OK status is sent to terminate
+      /// this RPC.
       /// </summary>
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task RunClient(IAsyncStreamReader<global::Grpc.Testing.ClientArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ClientStatus> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  Just return the core count - unary call
+      /// Just return the core count - unary call
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.CoreResponse> CoreCount(global::Grpc.Testing.CoreRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  Quit this worker
+      /// Quit this worker
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Void> QuitWorker(global::Grpc.Testing.Void request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
@@ -294,105 +338,149 @@ namespace Grpc.Testing {
       }
 
       /// <summary>
-      ///  Start server with specified workload.
-      ///  First request sent specifies the ServerConfig followed by ServerStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test server
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
+      /// Start server with specified workload.
+      /// First request sent specifies the ServerConfig followed by ServerStatus
+      /// response. After that, a "Mark" can be sent anytime to request the latest
+      /// stats. Closing the stream will initiate shutdown of the test server
+      /// and once the shutdown has finished, the OK status is sent to terminate
+      /// this RPC.
       /// </summary>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> RunServer(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return RunServer(new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Start server with specified workload.
-      ///  First request sent specifies the ServerConfig followed by ServerStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test server
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
+      /// Start server with specified workload.
+      /// First request sent specifies the ServerConfig followed by ServerStatus
+      /// response. After that, a "Mark" can be sent anytime to request the latest
+      /// stats. Closing the stream will initiate shutdown of the test server
+      /// and once the shutdown has finished, the OK status is sent to terminate
+      /// this RPC.
       /// </summary>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> RunServer(CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_RunServer, null, options);
       }
       /// <summary>
-      ///  Start client with specified workload.
-      ///  First request sent specifies the ClientConfig followed by ClientStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test client
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
+      /// Start client with specified workload.
+      /// First request sent specifies the ClientConfig followed by ClientStatus
+      /// response. After that, a "Mark" can be sent anytime to request the latest
+      /// stats. Closing the stream will initiate shutdown of the test client
+      /// and once the shutdown has finished, the OK status is sent to terminate
+      /// this RPC.
       /// </summary>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> RunClient(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return RunClient(new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Start client with specified workload.
-      ///  First request sent specifies the ClientConfig followed by ClientStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test client
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
+      /// Start client with specified workload.
+      /// First request sent specifies the ClientConfig followed by ClientStatus
+      /// response. After that, a "Mark" can be sent anytime to request the latest
+      /// stats. Closing the stream will initiate shutdown of the test client
+      /// and once the shutdown has finished, the OK status is sent to terminate
+      /// this RPC.
       /// </summary>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> RunClient(CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_RunClient, null, options);
       }
       /// <summary>
-      ///  Just return the core count - unary call
+      /// Just return the core count - unary call
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.CoreResponse CoreCount(global::Grpc.Testing.CoreRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return CoreCount(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Just return the core count - unary call
+      /// Just return the core count - unary call
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.CoreResponse CoreCount(global::Grpc.Testing.CoreRequest request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_CoreCount, null, options, request);
       }
       /// <summary>
-      ///  Just return the core count - unary call
+      /// Just return the core count - unary call
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.CoreResponse> CoreCountAsync(global::Grpc.Testing.CoreRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return CoreCountAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Just return the core count - unary call
+      /// Just return the core count - unary call
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.CoreResponse> CoreCountAsync(global::Grpc.Testing.CoreRequest request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_CoreCount, null, options, request);
       }
       /// <summary>
-      ///  Quit this worker
+      /// Quit this worker
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.Void QuitWorker(global::Grpc.Testing.Void request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return QuitWorker(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Quit this worker
+      /// Quit this worker
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.Void QuitWorker(global::Grpc.Testing.Void request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_QuitWorker, null, options, request);
       }
       /// <summary>
-      ///  Quit this worker
+      /// Quit this worker
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.Void> QuitWorkerAsync(global::Grpc.Testing.Void request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return QuitWorkerAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Quit this worker
+      /// Quit this worker
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.Void> QuitWorkerAsync(global::Grpc.Testing.Void request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_QuitWorker, null, options, request);
@@ -405,6 +493,7 @@ namespace Grpc.Testing {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
     public static ServerServiceDefinition BindService(WorkerServiceBase serviceImpl)
     {
       return ServerServiceDefinition.CreateBuilder()
diff --git a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
index 43dbc2865f5b6c80933134e13a3cdac5c728edc0..0265f8e821ebe93fb62351562b26b21eaa55919d 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
@@ -42,8 +42,8 @@ using Grpc.Core;
 
 namespace Grpc.Testing {
   /// <summary>
-  ///  A simple service to test the various types of RPCs and experiment with
-  ///  performance with various types of payload.
+  /// A simple service to test the various types of RPCs and experiment with
+  /// performance with various types of payload.
   /// </summary>
   public static partial class TestService
   {
@@ -123,74 +123,101 @@ namespace Grpc.Testing {
     public abstract partial class TestServiceBase
     {
       /// <summary>
-      ///  One empty request followed by one empty response.
+      /// One empty request followed by one empty response.
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> EmptyCall(global::Grpc.Testing.Empty request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  One request followed by one response.
+      /// One request followed by one response.
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  One request followed by one response. Response has cache control
-      ///  headers set such that a caching HTTP proxy (such as GFE) can
-      ///  satisfy subsequent requests.
+      /// One request followed by one response. Response has cache control
+      /// headers set such that a caching HTTP proxy (such as GFE) can
+      /// satisfy subsequent requests.
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> CacheableUnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  One request followed by a sequence of responses (streamed download).
-      ///  The server returns the payload with client desired type and sizes.
+      /// One request followed by a sequence of responses (streamed download).
+      /// The server returns the payload with client desired type and sizes.
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  A sequence of requests followed by one response (streamed upload).
-      ///  The server returns the aggregated size of client payload as the result.
+      /// A sequence of requests followed by one response (streamed upload).
+      /// The server returns the aggregated size of client payload as the result.
       /// </summary>
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<global::Grpc.Testing.StreamingInputCallRequest> requestStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  A sequence of requests with each request served by the server immediately.
-      ///  As one request could lead to multiple responses, this interface
-      ///  demonstrates the idea of full duplexing.
+      /// A sequence of requests with each request served by the server immediately.
+      /// As one request could lead to multiple responses, this interface
+      /// demonstrates the idea of full duplexing.
       /// </summary>
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task FullDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  A sequence of requests followed by a sequence of responses.
-      ///  The server buffers all the client requests and then serves them in order. A
-      ///  stream of responses are returned to the client when the server starts with
-      ///  first request.
+      /// A sequence of requests followed by a sequence of responses.
+      /// The server buffers all the client requests and then serves them in order. A
+      /// stream of responses are returned to the client when the server starts with
+      /// first request.
       /// </summary>
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task HalfDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  The test server will not implement this method. It will be used
-      ///  to test the behavior when clients call unimplemented methods.
+      /// The test server will not implement this method. It will be used
+      /// to test the behavior when clients call unimplemented methods.
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
@@ -222,195 +249,285 @@ namespace Grpc.Testing {
       }
 
       /// <summary>
-      ///  One empty request followed by one empty response.
+      /// One empty request followed by one empty response.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.Empty EmptyCall(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return EmptyCall(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One empty request followed by one empty response.
+      /// One empty request followed by one empty response.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.Empty EmptyCall(global::Grpc.Testing.Empty request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_EmptyCall, null, options, request);
       }
       /// <summary>
-      ///  One empty request followed by one empty response.
+      /// One empty request followed by one empty response.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> EmptyCallAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return EmptyCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One empty request followed by one empty response.
+      /// One empty request followed by one empty response.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> EmptyCallAsync(global::Grpc.Testing.Empty request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_EmptyCall, null, options, request);
       }
       /// <summary>
-      ///  One request followed by one response.
+      /// One request followed by one response.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return UnaryCall(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One request followed by one response.
+      /// One request followed by one response.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_UnaryCall, null, options, request);
       }
       /// <summary>
-      ///  One request followed by one response.
+      /// One request followed by one response.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return UnaryCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One request followed by one response.
+      /// One request followed by one response.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_UnaryCall, null, options, request);
       }
       /// <summary>
-      ///  One request followed by one response. Response has cache control
-      ///  headers set such that a caching HTTP proxy (such as GFE) can
-      ///  satisfy subsequent requests.
+      /// One request followed by one response. Response has cache control
+      /// headers set such that a caching HTTP proxy (such as GFE) can
+      /// satisfy subsequent requests.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.SimpleResponse CacheableUnaryCall(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return CacheableUnaryCall(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One request followed by one response. Response has cache control
-      ///  headers set such that a caching HTTP proxy (such as GFE) can
-      ///  satisfy subsequent requests.
+      /// One request followed by one response. Response has cache control
+      /// headers set such that a caching HTTP proxy (such as GFE) can
+      /// satisfy subsequent requests.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.SimpleResponse CacheableUnaryCall(global::Grpc.Testing.SimpleRequest request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_CacheableUnaryCall, null, options, request);
       }
       /// <summary>
-      ///  One request followed by one response. Response has cache control
-      ///  headers set such that a caching HTTP proxy (such as GFE) can
-      ///  satisfy subsequent requests.
+      /// One request followed by one response. Response has cache control
+      /// headers set such that a caching HTTP proxy (such as GFE) can
+      /// satisfy subsequent requests.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> CacheableUnaryCallAsync(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return CacheableUnaryCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One request followed by one response. Response has cache control
-      ///  headers set such that a caching HTTP proxy (such as GFE) can
-      ///  satisfy subsequent requests.
+      /// One request followed by one response. Response has cache control
+      /// headers set such that a caching HTTP proxy (such as GFE) can
+      /// satisfy subsequent requests.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> CacheableUnaryCallAsync(global::Grpc.Testing.SimpleRequest request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_CacheableUnaryCall, null, options, request);
       }
       /// <summary>
-      ///  One request followed by a sequence of responses (streamed download).
-      ///  The server returns the payload with client desired type and sizes.
+      /// One request followed by a sequence of responses (streamed download).
+      /// The server returns the payload with client desired type and sizes.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncServerStreamingCall<global::Grpc.Testing.StreamingOutputCallResponse> StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return StreamingOutputCall(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  One request followed by a sequence of responses (streamed download).
-      ///  The server returns the payload with client desired type and sizes.
+      /// One request followed by a sequence of responses (streamed download).
+      /// The server returns the payload with client desired type and sizes.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncServerStreamingCall<global::Grpc.Testing.StreamingOutputCallResponse> StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, CallOptions options)
       {
         return CallInvoker.AsyncServerStreamingCall(__Method_StreamingOutputCall, null, options, request);
       }
       /// <summary>
-      ///  A sequence of requests followed by one response (streamed upload).
-      ///  The server returns the aggregated size of client payload as the result.
+      /// A sequence of requests followed by one response (streamed upload).
+      /// The server returns the aggregated size of client payload as the result.
       /// </summary>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncClientStreamingCall<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return StreamingInputCall(new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A sequence of requests followed by one response (streamed upload).
-      ///  The server returns the aggregated size of client payload as the result.
+      /// A sequence of requests followed by one response (streamed upload).
+      /// The server returns the aggregated size of client payload as the result.
       /// </summary>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncClientStreamingCall<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(CallOptions options)
       {
         return CallInvoker.AsyncClientStreamingCall(__Method_StreamingInputCall, null, options);
       }
       /// <summary>
-      ///  A sequence of requests with each request served by the server immediately.
-      ///  As one request could lead to multiple responses, this interface
-      ///  demonstrates the idea of full duplexing.
+      /// A sequence of requests with each request served by the server immediately.
+      /// As one request could lead to multiple responses, this interface
+      /// demonstrates the idea of full duplexing.
       /// </summary>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> FullDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return FullDuplexCall(new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A sequence of requests with each request served by the server immediately.
-      ///  As one request could lead to multiple responses, this interface
-      ///  demonstrates the idea of full duplexing.
+      /// A sequence of requests with each request served by the server immediately.
+      /// As one request could lead to multiple responses, this interface
+      /// demonstrates the idea of full duplexing.
       /// </summary>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> FullDuplexCall(CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_FullDuplexCall, null, options);
       }
       /// <summary>
-      ///  A sequence of requests followed by a sequence of responses.
-      ///  The server buffers all the client requests and then serves them in order. A
-      ///  stream of responses are returned to the client when the server starts with
-      ///  first request.
+      /// A sequence of requests followed by a sequence of responses.
+      /// The server buffers all the client requests and then serves them in order. A
+      /// stream of responses are returned to the client when the server starts with
+      /// first request.
       /// </summary>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> HalfDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return HalfDuplexCall(new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A sequence of requests followed by a sequence of responses.
-      ///  The server buffers all the client requests and then serves them in order. A
-      ///  stream of responses are returned to the client when the server starts with
-      ///  first request.
+      /// A sequence of requests followed by a sequence of responses.
+      /// The server buffers all the client requests and then serves them in order. A
+      /// stream of responses are returned to the client when the server starts with
+      /// first request.
       /// </summary>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> HalfDuplexCall(CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_HalfDuplexCall, null, options);
       }
       /// <summary>
-      ///  The test server will not implement this method. It will be used
-      ///  to test the behavior when clients call unimplemented methods.
+      /// The test server will not implement this method. It will be used
+      /// to test the behavior when clients call unimplemented methods.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return UnimplementedCall(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  The test server will not implement this method. It will be used
-      ///  to test the behavior when clients call unimplemented methods.
+      /// The test server will not implement this method. It will be used
+      /// to test the behavior when clients call unimplemented methods.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_UnimplementedCall, null, options, request);
       }
       /// <summary>
-      ///  The test server will not implement this method. It will be used
-      ///  to test the behavior when clients call unimplemented methods.
+      /// The test server will not implement this method. It will be used
+      /// to test the behavior when clients call unimplemented methods.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return UnimplementedCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  The test server will not implement this method. It will be used
-      ///  to test the behavior when clients call unimplemented methods.
+      /// The test server will not implement this method. It will be used
+      /// to test the behavior when clients call unimplemented methods.
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_UnimplementedCall, null, options, request);
@@ -423,6 +540,7 @@ namespace Grpc.Testing {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
     public static ServerServiceDefinition BindService(TestServiceBase serviceImpl)
     {
       return ServerServiceDefinition.CreateBuilder()
@@ -438,8 +556,8 @@ namespace Grpc.Testing {
 
   }
   /// <summary>
-  ///  A simple service NOT implemented at servers so clients can test for
-  ///  that case.
+  /// A simple service NOT implemented at servers so clients can test for
+  /// that case.
   /// </summary>
   public static partial class UnimplementedService
   {
@@ -464,8 +582,11 @@ namespace Grpc.Testing {
     public abstract partial class UnimplementedServiceBase
     {
       /// <summary>
-      ///  A call that no server should implement
+      /// A call that no server should implement
       /// </summary>
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
       public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
@@ -497,29 +618,45 @@ namespace Grpc.Testing {
       }
 
       /// <summary>
-      ///  A call that no server should implement
+      /// A call that no server should implement
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return UnimplementedCall(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A call that no server should implement
+      /// A call that no server should implement
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
       public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_UnimplementedCall, null, options, request);
       }
       /// <summary>
-      ///  A call that no server should implement
+      /// A call that no server should implement
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return UnimplementedCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A call that no server should implement
+      /// A call that no server should implement
       /// </summary>
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_UnimplementedCall, null, options, request);
@@ -532,6 +669,7 @@ namespace Grpc.Testing {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
     public static ServerServiceDefinition BindService(UnimplementedServiceBase serviceImpl)
     {
       return ServerServiceDefinition.CreateBuilder()
@@ -540,7 +678,7 @@ namespace Grpc.Testing {
 
   }
   /// <summary>
-  ///  A service used to control reconnect server.
+  /// A service used to control reconnect server.
   /// </summary>
   public static partial class ReconnectService
   {
@@ -648,6 +786,7 @@ namespace Grpc.Testing {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
     public static ServerServiceDefinition BindService(ReconnectServiceBase serviceImpl)
     {
       return ServerServiceDefinition.CreateBuilder()
diff --git a/src/csharp/Grpc.Reflection/ReflectionGrpc.cs b/src/csharp/Grpc.Reflection/ReflectionGrpc.cs
index 1b6f96ce7c7749bb6ecd0f74d1e4d2815fa60f09..5bd7558be58e2bad6f0877af7cb8f9d77966b944 100644
--- a/src/csharp/Grpc.Reflection/ReflectionGrpc.cs
+++ b/src/csharp/Grpc.Reflection/ReflectionGrpc.cs
@@ -64,9 +64,13 @@ namespace Grpc.Reflection.V1Alpha {
     public abstract partial class ServerReflectionBase
     {
       /// <summary>
-      ///  The reflection service is structured as a bidirectional stream, ensuring
-      ///  all related requests go to a single server.
+      /// The reflection service is structured as a bidirectional stream, ensuring
+      /// all related requests go to a single server.
       /// </summary>
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
       public virtual global::System.Threading.Tasks.Task ServerReflectionInfo(IAsyncStreamReader<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest> requestStream, IServerStreamWriter<global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
@@ -98,17 +102,23 @@ namespace Grpc.Reflection.V1Alpha {
       }
 
       /// <summary>
-      ///  The reflection service is structured as a bidirectional stream, ensuring
-      ///  all related requests go to a single server.
+      /// The reflection service is structured as a bidirectional stream, ensuring
+      /// all related requests go to a single server.
       /// </summary>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> ServerReflectionInfo(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
         return ServerReflectionInfo(new CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  The reflection service is structured as a bidirectional stream, ensuring
-      ///  all related requests go to a single server.
+      /// The reflection service is structured as a bidirectional stream, ensuring
+      /// all related requests go to a single server.
       /// </summary>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
       public virtual AsyncDuplexStreamingCall<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> ServerReflectionInfo(CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_ServerReflectionInfo, null, options);
@@ -121,6 +131,7 @@ namespace Grpc.Reflection.V1Alpha {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
     public static ServerServiceDefinition BindService(ServerReflectionBase serviceImpl)
     {
       return ServerServiceDefinition.CreateBuilder()
diff --git a/src/node/ext/completion_queue.h b/src/node/ext/completion_queue.h
index bf280f768b0680a652fdb36f1a74240719f17878..9b01028ef173a42c9c0e2eaef9352702c787647f 100644
--- a/src/node/ext/completion_queue.h
+++ b/src/node/ext/completion_queue.h
@@ -32,6 +32,7 @@
  */
 
 #include <v8.h>
+#include <grpc/grpc.h>
 
 namespace grpc {
 namespace node {
diff --git a/src/node/ext/completion_queue_async_worker.cc b/src/node/ext/completion_queue_threadpool.cc
similarity index 72%
rename from src/node/ext/completion_queue_async_worker.cc
rename to src/node/ext/completion_queue_threadpool.cc
index f5e03b277b36bda82f244f16de9041d856722e25..6302e7a103b112378b36d87fbacf0c67b5d56b8b 100644
--- a/src/node/ext/completion_queue_async_worker.cc
+++ b/src/node/ext/completion_queue_threadpool.cc
@@ -31,18 +31,63 @@
  *
  */
 
+/* I don't like using #ifndef, but I don't see a better way to do this */
+#ifndef GRPC_UV
+
 #include <node.h>
 #include <nan.h>
 
 #include "grpc/grpc.h"
 #include "grpc/support/log.h"
 #include "grpc/support/time.h"
-#include "completion_queue_async_worker.h"
+#include "completion_queue.h"
 #include "call.h"
 
 namespace grpc {
 namespace node {
 
+namespace {
+
+/* A worker that asynchronously calls completion_queue_next, and queues onto the
+   node event loop a call to the function stored in the event's tag. */
+class CompletionQueueAsyncWorker : public Nan::AsyncWorker {
+ public:
+  CompletionQueueAsyncWorker();
+
+  ~CompletionQueueAsyncWorker();
+  /* Calls completion_queue_next with the provided deadline, and stores the
+     event if there was one or sets an error message if there was not */
+  void Execute();
+
+  /* Returns the completion queue attached to this class */
+  static grpc_completion_queue *GetQueue();
+
+  /* Convenience function to create a worker with the given arguments and queue
+     it to run asynchronously */
+  static void Next();
+
+  /* Initialize the CompletionQueueAsyncWorker class */
+  static void Init(v8::Local<v8::Object> exports);
+
+ protected:
+  /* Called when Execute has succeeded (completed without setting an error
+     message). Calls the saved callback with the event that came from
+     completion_queue_next */
+  void HandleOKCallback();
+
+  void HandleErrorCallback();
+
+ private:
+  grpc_event result;
+
+  static grpc_completion_queue *queue;
+
+  // Number of grpc_completion_queue_next calls in the thread pool
+  static int current_threads;
+  // Number of grpc_completion_queue_next calls waiting to enter the thread pool
+  static int waiting_next_calls;
+};
+
 const int max_queue_threads = 2;
 
 using v8::Function;
@@ -137,5 +182,21 @@ void CompletionQueueAsyncWorker::HandleErrorCallback() {
   DestroyTag(result.tag);
 }
 
+}  // namespace
+
+grpc_completion_queue *GetCompletionQueue() {
+  return CompletionQueueAsyncWorker::GetQueue();
+}
+
+void CompletionQueueNext() {
+  CompletionQueueAsyncWorker::Next();
+}
+
+void CompletionQueueInit(Local<Object> exports) {
+  CompletionQueueAsyncWorker::Init(exports);
+}
+
 }  // namespace node
 }  // namespace grpc
+
+#endif  /* GRPC_UV */
diff --git a/src/node/ext/completion_queue.cc b/src/node/ext/completion_queue_uv.cc
similarity index 93%
rename from src/node/ext/completion_queue.cc
rename to src/node/ext/completion_queue_uv.cc
index fcfa77b39ce040b7a922c883aae350e908813fe0..615973a6c9b8f0e67fc02bc2a068bf74b4098906 100644
--- a/src/node/ext/completion_queue.cc
+++ b/src/node/ext/completion_queue_uv.cc
@@ -31,6 +31,8 @@
  *
  */
 
+#ifdef GRPC_UV
+
 #include <uv.h>
 #include <node.h>
 #include <v8.h>
@@ -38,7 +40,6 @@
 
 #include "call.h"
 #include "completion_queue.h"
-#include "completion_queue_async_worker.h"
 
 namespace grpc {
 namespace node {
@@ -81,34 +82,24 @@ void drain_completion_queue(uv_prepare_t *handle) {
 }
 
 grpc_completion_queue *GetCompletionQueue() {
-#ifdef GRPC_UV
   return queue;
-#else
-  return CompletionQueueAsyncWorker::GetQueue();
-#endif
 }
 
 void CompletionQueueNext() {
-#ifdef GRPC_UV
   if (pending_batches == 0) {
     GPR_ASSERT(!uv_is_active((uv_handle_t *)&prepare));
     uv_prepare_start(&prepare, drain_completion_queue);
   }
   pending_batches++;
-#else
-  CompletionQueueAsyncWorker::Next();
-#endif
 }
 
 void CompletionQueueInit(Local<Object> exports) {
-#ifdef GRPC_UV
   queue = grpc_completion_queue_create(NULL);
   uv_prepare_init(uv_default_loop(), &prepare);
   pending_batches = 0;
-#else
-  CompletionQueueAsyncWorker::Init(exports);
-#endif
 }
 
 }  // namespace node
 }  // namespace grpc
+
+#endif /* GRPC_UV */
diff --git a/src/node/interop/interop_client.js b/src/node/interop/interop_client.js
index 46ddecfb1f630711bffac1eac0240488784d6f57..75cfb41342faaa9cc50c91ee9d6b82f7a8540416 100644
--- a/src/node/interop/interop_client.js
+++ b/src/node/interop/interop_client.js
@@ -312,6 +312,9 @@ function customMetadata(client, done) {
     }
   };
   var streaming_arg = {
+    response_parameters: [
+     {size: 314159}
+    ],
     payload: {
       body: zeroBuffer(271828)
     }
diff --git a/src/node/src/client.js b/src/node/src/client.js
index 9c1562e8b8cca1a135bc38001d288d5e9974bdcd..134ef239c2560e10ffaf382bcb5e4897c8c355ce 100644
--- a/src/node/src/client.js
+++ b/src/node/src/client.js
@@ -99,7 +99,18 @@ function ClientWritableStream(call, serialize) {
 function _write(chunk, encoding, callback) {
   /* jshint validthis: true */
   var batch = {};
-  var message = this.serialize(chunk);
+  var message;
+  try {
+    message = this.serialize(chunk);
+  } catch (e) {
+    /* Sending this error to the server and emitting it immediately on the
+       client may put the call in a slightly weird state on the client side,
+       but passing an object that causes a serialization failure is a misuse
+       of the API anyway, so that's OK. The primary purpose here is to give the
+       programmer a useful error and to stop the stream properly */
+    this.call.cancelWithStatus(grpc.status.INTERNAL, "Serialization failure");
+    callback(e);
+  }
   if (_.isFinite(encoding)) {
     /* Attach the encoding if it is a finite number. This is the closest we
      * can get to checking that it is valid flags */
@@ -184,14 +195,15 @@ function _emitStatusIfDone() {
     } else {
       status = this.received_status;
     }
-    this.emit('status', status);
-    if (status.code !== grpc.status.OK) {
+    if (status.code === grpc.status.OK) {
+      this.push(null);
+    } else {
       var error = new Error(status.details);
       error.code = status.code;
       error.metadata = status.metadata;
       this.emit('error', error);
-      return;
     }
+    this.emit('status', status);
   }
 }
 
@@ -224,9 +236,11 @@ function _read(size) {
     } catch (e) {
       self._readsDone({code: grpc.status.INTERNAL,
                        details: 'Failed to parse server response'});
+      return;
     }
     if (data === null) {
       self._readsDone();
+      return;
     }
     if (self.push(deserialized) && data !== null) {
       var read_batch = {};
@@ -396,6 +410,8 @@ function makeUnaryRequestFunction(method, serialize, deserialize) {
       var status = response.status;
       var error;
       var deserialized;
+      emitter.emit('metadata', Metadata._fromCoreRepresentation(
+          response.metadata));
       if (status.code === grpc.status.OK) {
         if (err) {
           // Got a batch error, but OK status. Something went wrong
@@ -423,8 +439,6 @@ function makeUnaryRequestFunction(method, serialize, deserialize) {
         args.callback(null, deserialized);
       }
       emitter.emit('status', status);
-      emitter.emit('metadata', Metadata._fromCoreRepresentation(
-          response.metadata));
     });
     return emitter;
   }
diff --git a/src/node/src/server.js b/src/node/src/server.js
index b3b414969ab84941ff950e4a33d0cbc9a86ae9c3..da9c6b2d7ff0983f09f1000e609f9f3d5275bc1a 100644
--- a/src/node/src/server.js
+++ b/src/node/src/server.js
@@ -127,7 +127,14 @@ function sendUnaryResponse(call, value, serialize, metadata, flags) {
         (new Metadata())._getCoreRepresentation();
     call.metadataSent = true;
   }
-  var message = serialize(value);
+  var message;
+  try {
+    message = serialize(value);
+  } catch (e) {
+    e.code = grpc.status.INTERNAL;
+    handleError(e);
+    return;
+  }
   message.grpcWriteFlags = flags;
   end_batch[grpc.opType.SEND_MESSAGE] = message;
   end_batch[grpc.opType.SEND_STATUS_FROM_SERVER] = status;
@@ -278,7 +285,14 @@ function _write(chunk, encoding, callback) {
         (new Metadata())._getCoreRepresentation();
     this.call.metadataSent = true;
   }
-  var message = this.serialize(chunk);
+  var message;
+  try {
+    message = this.serialize(chunk);
+  } catch (e) {
+    e.code = grpc.status.INTERNAL;
+    callback(e);
+    return;
+  }
   if (_.isFinite(encoding)) {
     /* Attach the encoding if it is a finite number. This is the closest we
      * can get to checking that it is valid flags */
diff --git a/src/node/test/surface_test.js b/src/node/test/surface_test.js
index d8b36dc55cbaa0ee4b4d11d405b0115104e3ad85..e429a3648ba1d60023f2fdb057b5c0caba561bd1 100644
--- a/src/node/test/surface_test.js
+++ b/src/node/test/surface_test.js
@@ -179,20 +179,22 @@ describe('Server.prototype.addProtoService', function() {
       call.on('data', function(value) {
         assert.fail('No messages expected');
       });
-      call.on('status', function(status) {
-        assert.strictEqual(status.code, grpc.status.UNIMPLEMENTED);
+      call.on('error', function(err) {
+        assert.strictEqual(err.code, grpc.status.UNIMPLEMENTED);
         done();
       });
+      call.on('error', function(status) { /* Do nothing */ });
     });
     it('should respond to a bidi call with UNIMPLEMENTED', function(done) {
       var call = client.divMany();
       call.on('data', function(value) {
         assert.fail('No messages expected');
       });
-      call.on('status', function(status) {
-        assert.strictEqual(status.code, grpc.status.UNIMPLEMENTED);
+      call.on('error', function(err) {
+        assert.strictEqual(err.code, grpc.status.UNIMPLEMENTED);
         done();
       });
+      call.on('error', function(status) { /* Do nothing */ });
       call.end();
     });
   });
diff --git a/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec b/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
index 6e594fd3edcdaad7f9f88504ead349809fc41524..bcc2bb612657759c77ac7a9285aff631b4f02bba 100644
--- a/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
+++ b/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
@@ -36,7 +36,7 @@ Pod::Spec.new do |s|
   # exclamation mark ensures that other "regular" pods will be able to find it as it'll be installed
   # before them.
   s.name     = '!ProtoCompiler-gRPCPlugin'
-  v = '1.0.1'
+  v = '1.0.2'
   s.version  = v
   s.summary  = 'The gRPC ProtoC plugin generates Objective-C files from .proto services.'
   s.description = <<-DESC
@@ -84,7 +84,10 @@ Pod::Spec.new do |s|
   repo = 'grpc/grpc'
   file = "grpc_objective_c_plugin-#{v}-macos-x86_64.zip"
   s.source = {
-    :http => "https://github.com/#{repo}/releases/download/v#{v}/#{file}",
+    # TODO(mxyan): Change back to "https://github.com/#{repo}/releases/download/v#{v}/#{file}" for
+    # next release
+    # :http => "https://github.com/#{repo}/releases/download/v#{v}/#{file}",
+    :http => "https://github.com/#{repo}/releases/download/objective-c-v#{v}/#{file}",
     # TODO(jcanizales): Add sha1 or sha256
     # :sha1 => '??',
   }
diff --git a/src/objective-c/CronetFramework.podspec b/src/objective-c/CronetFramework.podspec
index 2f47b02c0c0738864d7448de61ac1df74126b565..509358dada2f325632a280dbf31a230532f5a554 100644
--- a/src/objective-c/CronetFramework.podspec
+++ b/src/objective-c/CronetFramework.podspec
@@ -30,7 +30,8 @@
 
 Pod::Spec.new do |s|
   s.name         = "CronetFramework"
-  s.version      = "0.0.3"
+  v = '0.0.4'
+  s.version      = v
   s.summary      = "Cronet, precompiled and used as a framework."
   s.homepage     = "http://chromium.org"
   s.license      = {
@@ -69,7 +70,7 @@ Pod::Spec.new do |s|
   s.vendored_framework = "Cronet.framework"
   s.author             = "The Chromium Authors"
   s.ios.deployment_target = "8.0"
-  s.source       = { :http => 'https://storage.googleapis.com/grpc-precompiled-binaries/cronet/Cronet.framework.zip' }
+  s.source       = { :http => "https://storage.googleapis.com/grpc-precompiled-binaries/cronet/Cronet.framework-v#{v}.zip"}
   s.preserve_paths = "Cronet.framework"
   s.public_header_files = "Cronet.framework/Headers/**/*{.h}"
   s.source_files = "Cronet.framework/Headers/**/*{.h}"
diff --git a/src/objective-c/GRPCClient/GRPCCall+Cronet.h b/src/objective-c/GRPCClient/GRPCCall+Cronet.h
index 2d8f7ac8fb9b3482ac851b68514d5e2692685494..b9d286c929ac729d42a91831f754c5b9d3782099 100644
--- a/src/objective-c/GRPCClient/GRPCCall+Cronet.h
+++ b/src/objective-c/GRPCClient/GRPCCall+Cronet.h
@@ -43,13 +43,13 @@
 /**
  * This method should be called before issuing the first RPC. It should be
  * called only once. Create an instance of Cronet engine in your app elsewhere
- * and pass the instance pointer in the cronet_engine parameter. Once set,
+ * and pass the instance pointer in the stream_engine parameter. Once set,
  * all subsequent RPCs will use Cronet transport. The method is not thread
  * safe.
  */
-+(void)useCronetWithEngine:(cronet_engine *)engine;
++(void)useCronetWithEngine:(stream_engine *)engine;
 
-+(cronet_engine *)cronetEngine;
++(stream_engine *)cronetEngine;
 
 +(BOOL)isUsingCronet;
 
diff --git a/src/objective-c/GRPCClient/GRPCCall+Cronet.m b/src/objective-c/GRPCClient/GRPCCall+Cronet.m
index 76ca1a2537c8048ed7dd34b7765aa89981783679..0e3598fb87d25697debab31b7dd90506b60d6f48 100644
--- a/src/objective-c/GRPCClient/GRPCCall+Cronet.m
+++ b/src/objective-c/GRPCClient/GRPCCall+Cronet.m
@@ -35,16 +35,16 @@
 
 #ifdef GRPC_COMPILE_WITH_CRONET
 static BOOL useCronet = NO;
-static cronet_engine *globalCronetEngine;
+static stream_engine *globalCronetEngine;
 
 @implementation GRPCCall (Cronet)
 
-+ (void)useCronetWithEngine:(cronet_engine *)engine {
++ (void)useCronetWithEngine:(stream_engine *)engine {
   useCronet = YES;
   globalCronetEngine = engine;
 }
 
-+ (cronet_engine *)cronetEngine {
++ (stream_engine *)cronetEngine {
   return globalCronetEngine;
 }
 
diff --git a/src/objective-c/GRPCClient/private/GRPCChannel.m b/src/objective-c/GRPCClient/private/GRPCChannel.m
index e49aceefe18aed7f791398939b47a4671879f204..2397c929f7011d58b1f9180cfe0ce155e1192798 100644
--- a/src/objective-c/GRPCClient/private/GRPCChannel.m
+++ b/src/objective-c/GRPCClient/private/GRPCChannel.m
@@ -108,7 +108,7 @@ static grpc_channel_args *BuildChannelArgs(NSDictionary *dictionary) {
 
 #ifdef GRPC_COMPILE_WITH_CRONET
 - (instancetype)initWithHost:(NSString *)host
-                cronetEngine:(cronet_engine *)cronetEngine
+                cronetEngine:(stream_engine *)cronetEngine
                  channelArgs:(NSDictionary *)channelArgs {
   if (!host) {
     [NSException raise:NSInvalidArgumentException format:@"host argument missing"];
@@ -163,7 +163,7 @@ static grpc_channel_args *BuildChannelArgs(NSDictionary *dictionary) {
 #ifdef GRPC_COMPILE_WITH_CRONET
 + (GRPCChannel *)secureCronetChannelWithHost:(NSString *)host
                                  channelArgs:(NSDictionary *)channelArgs {
-  cronet_engine *engine = [GRPCCall cronetEngine];
+  stream_engine *engine = [GRPCCall cronetEngine];
   if (!engine) {
     [NSException raise:NSInvalidArgumentException
                 format:@"cronet_engine is NULL. Set it first."];
diff --git a/src/objective-c/GRPCClient/private/GRPCHost.m b/src/objective-c/GRPCClient/private/GRPCHost.m
index 31065cbf018ecced6ecb7283f4e85186fe66c8be..450bec36e088f9015c518ead48df9e6451fd1b29 100644
--- a/src/objective-c/GRPCClient/private/GRPCHost.m
+++ b/src/objective-c/GRPCClient/private/GRPCHost.m
@@ -50,7 +50,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 // TODO(jcanizales): Generate the version in a standalone header, from templates. Like
 // templates/src/core/surface/version.c.template .
-#define GRPC_OBJC_VERSION_STRING @"1.0.1"
+#define GRPC_OBJC_VERSION_STRING @"1.0.2"
 
 static NSMutableDictionary *kHostCache;
 
diff --git a/src/objective-c/tests/CoreCronetEnd2EndTests/CoreCronetEnd2EndTests.m b/src/objective-c/tests/CoreCronetEnd2EndTests/CoreCronetEnd2EndTests.m
index 4ba7badd866131c5c761949ea9e3c820c70988f3..01eea52ef39cb3bc74caaf0e2f85c9eb90bee3dc 100644
--- a/src/objective-c/tests/CoreCronetEnd2EndTests/CoreCronetEnd2EndTests.m
+++ b/src/objective-c/tests/CoreCronetEnd2EndTests/CoreCronetEnd2EndTests.m
@@ -94,7 +94,7 @@ static void process_auth_failure(void *state, grpc_auth_context *ctx,
 
 static void cronet_init_client_secure_fullstack(grpc_end2end_test_fixture *f,
                                                 grpc_channel_args *client_args,
-                                                cronet_engine *cronetEngine) {
+                                                stream_engine *cronetEngine) {
   fullstack_secure_fixture_data *ffd = f->fixture_data;
   f->client = grpc_cronet_secure_channel_create(cronetEngine, ffd->localaddr,
                                                 client_args, NULL);
@@ -124,7 +124,7 @@ static void chttp2_tear_down_secure_fullstack(grpc_end2end_test_fixture *f) {
 
 static void cronet_init_client_simple_ssl_secure_fullstack(
     grpc_end2end_test_fixture *f, grpc_channel_args *client_args) {
-  cronet_engine *cronetEngine = [Cronet getGlobalEngine];
+  stream_engine *cronetEngine = [Cronet getGlobalEngine];
 
   grpc_channel_args *new_client_args = grpc_channel_args_copy(client_args);
   cronet_init_client_secure_fullstack(f, new_client_args, cronetEngine);
diff --git a/src/php/README.md b/src/php/README.md
index 1b15768d44a1d913b6a28e257ac642d2e38040df..320220d3e4a3730be3181e7b2ebbefff0fe3b14a 100644
--- a/src/php/README.md
+++ b/src/php/README.md
@@ -163,6 +163,13 @@ of this repo. The plugin can be found in the `bins/opt` directory. We are
 planning to provide a better way to download and install the plugin
 in the future.
 
+You can also just build the gRPC PHP protoc plugin by running:
+
+```sh
+$ cd grpc
+$ make grpc_php_plugin
+```
+
 
 ### Client Stub
 
diff --git a/src/php/bin/generate_proto_php.sh b/src/php/bin/generate_proto_php.sh
index c558bc576981ac266bef54476ba7af931b8cf307..416fa9df97b246b3a95669ee7878b3991ad88f4a 100755
--- a/src/php/bin/generate_proto_php.sh
+++ b/src/php/bin/generate_proto_php.sh
@@ -39,10 +39,13 @@ protoc --proto_path=src/proto/math \
 
 # replace the Empty message with EmptyMessage
 # because Empty is a PHP reserved word
-sed -i 's/message Empty/message EmptyMessage/g' \
-    src/proto/grpc/testing/empty.proto
-sed -i 's/grpc\.testing\.Empty/grpc\.testing\.EmptyMessage/g' \
-    src/proto/grpc/testing/test.proto
+output_file=$(mktemp)
+sed 's/message Empty/message EmptyMessage/g' \
+  src/proto/grpc/testing/empty.proto > $output_file
+mv $output_file ./src/proto/grpc/testing/empty.proto
+sed 's/grpc\.testing\.Empty/grpc\.testing\.EmptyMessage/g' \
+  src/proto/grpc/testing/test.proto > $output_file
+mv $output_file ./src/proto/grpc/testing/test.proto
 
 protoc --proto_path=. \
        --php_out=src/php/tests/interop \
@@ -53,7 +56,10 @@ protoc --proto_path=. \
        src/proto/grpc/testing/test.proto
 
 # change it back
-sed -i 's/message EmptyMessage/message Empty/g' \
-    src/proto/grpc/testing/empty.proto
-sed -i 's/grpc\.testing\.EmptyMessage/grpc\.testing\.Empty/g' \
-    src/proto/grpc/testing/test.proto
+sed 's/message EmptyMessage/message Empty/g' \
+  src/proto/grpc/testing/empty.proto > $output_file
+mv $output_file ./src/proto/grpc/testing/empty.proto
+sed 's/grpc\.testing\.EmptyMessage/grpc\.testing\.Empty/g' \
+  src/proto/grpc/testing/test.proto > $output_file
+mv $output_file ./src/proto/grpc/testing/test.proto
+
diff --git a/src/php/ext/grpc/call.c b/src/php/ext/grpc/call.c
index 3a49ea870813d55b06301cf0e7291f318be97a16..64b1137c2a454ba4bf2bbe782f0290b50787b200 100644
--- a/src/php/ext/grpc/call.c
+++ b/src/php/ext/grpc/call.c
@@ -478,6 +478,7 @@ PHP_METHOD(Call, startBatch) {
                                    true);
       add_property_zval(result, "status", recv_status);
       PHP_GRPC_DELREF(recv_status);
+      PHP_GRPC_FREE_STD_ZVAL(recv_status);
       break;
     case GRPC_OP_RECV_CLOSE_ON_SERVER:
       add_property_bool(result, "cancelled", cancelled);
@@ -501,6 +502,7 @@ cleanup:
     }
     if (ops[i].op == GRPC_OP_RECV_MESSAGE) {
       grpc_byte_buffer_destroy(message);
+      PHP_GRPC_FREE_STD_ZVAL(message_str);
     }
   }
   RETURN_DESTROY_ZVAL(result);
diff --git a/src/php/ext/grpc/call_credentials.c b/src/php/ext/grpc/call_credentials.c
index 3aafc3a19b667d761f188cb164a7b0f1c0907076..043817facd1c288f3c1bd6a2a461a6854ecfae89 100644
--- a/src/php/ext/grpc/call_credentials.c
+++ b/src/php/ext/grpc/call_credentials.c
@@ -111,9 +111,7 @@ PHP_METHOD(CallCredentials, createComposite) {
   grpc_call_credentials *creds =
       grpc_composite_call_credentials_create(cred1->wrapped, cred2->wrapped,
                                              NULL);
-  zval *creds_object;
-  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
-  creds_object = grpc_php_wrap_call_credentials(creds TSRMLS_CC);
+  zval *creds_object = grpc_php_wrap_call_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
@@ -155,9 +153,7 @@ PHP_METHOD(CallCredentials, createFromPlugin) {
 
   grpc_call_credentials *creds =
     grpc_metadata_credentials_create_from_plugin(plugin, NULL);
-  zval *creds_object;
-  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
-  creds_object = grpc_php_wrap_call_credentials(creds TSRMLS_CC);
+  zval *creds_object = grpc_php_wrap_call_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
@@ -211,6 +207,8 @@ void plugin_destroy_state(void *ptr) {
   plugin_state *state = (plugin_state *)ptr;
   efree(state->fci);
   efree(state->fci_cache);
+  PHP_GRPC_FREE_STD_ZVAL(state->fci->params);
+  PHP_GRPC_FREE_STD_ZVAL(state->fci->retval);
   efree(state);
 }
 
diff --git a/src/php/ext/grpc/channel_credentials.c b/src/php/ext/grpc/channel_credentials.c
index a32c4a4ea24272059c8b05e21ed256185acdf229..36a8223b8806fe124737f3eac8c14f9e993ddc63 100644
--- a/src/php/ext/grpc/channel_credentials.c
+++ b/src/php/ext/grpc/channel_credentials.c
@@ -121,9 +121,7 @@ PHP_METHOD(ChannelCredentials, setDefaultRootsPem) {
  */
 PHP_METHOD(ChannelCredentials, createDefault) {
   grpc_channel_credentials *creds = grpc_google_default_credentials_create();
-  zval *creds_object;
-  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
-  creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
+  zval *creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
@@ -160,9 +158,7 @@ PHP_METHOD(ChannelCredentials, createSsl) {
   grpc_channel_credentials *creds = grpc_ssl_credentials_create(
       pem_root_certs,
       pem_key_cert_pair.private_key == NULL ? NULL : &pem_key_cert_pair, NULL);
-  zval *creds_object;
-  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
-  creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
+  zval *creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
@@ -191,9 +187,7 @@ PHP_METHOD(ChannelCredentials, createComposite) {
   grpc_channel_credentials *creds =
       grpc_composite_channel_credentials_create(cred1->wrapped, cred2->wrapped,
                                                 NULL);
-  zval *creds_object;
-  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
-  creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
+  zval *creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
diff --git a/src/php/ext/grpc/php7_wrapper.h b/src/php/ext/grpc/php7_wrapper.h
index 1d7824113faf1be801726a73500e202607ca2669..72e982d6fc93aff101ae382dbad46b70f8c814cb 100644
--- a/src/php/ext/grpc/php7_wrapper.h
+++ b/src/php/ext/grpc/php7_wrapper.h
@@ -50,8 +50,13 @@
 
 #define PHP_GRPC_RETURN_STRING(val, dup) RETURN_STRING(val, dup)
 #define PHP_GRPC_MAKE_STD_ZVAL(pzv) MAKE_STD_ZVAL(pzv)
+#define PHP_GRPC_FREE_STD_ZVAL(pzv)
 #define PHP_GRPC_DELREF(zv) Z_DELREF_P(zv)
 
+#define RETURN_DESTROY_ZVAL(val) \
+  RETURN_ZVAL(val, false /* Don't execute copy constructor */, \
+              true /* Dealloc original before returning */)
+
 #define PHP_GRPC_WRAP_OBJECT_START(name) \
   typedef struct name { \
     zend_object std;
@@ -144,8 +149,15 @@ static inline int php_grpc_zend_hash_find(HashTable *ht, char *key, int len,
 #define PHP_GRPC_RETURN_STRING(val, dup) RETURN_STRING(val)
 #define PHP_GRPC_MAKE_STD_ZVAL(pzv) \
   pzv = (zval *)emalloc(sizeof(zval));
+#define PHP_GRPC_FREE_STD_ZVAL(pzv) efree(pzv);
 #define PHP_GRPC_DELREF(zv)
 
+#define RETURN_DESTROY_ZVAL(val) \
+  RETVAL_ZVAL(val, false /* Don't execute copy constructor */, \
+              true /* Dealloc original before returning */); \
+  efree(val); \
+  return
+
 #define PHP_GRPC_WRAP_OBJECT_START(name) \
   typedef struct name {
 #define PHP_GRPC_WRAP_OBJECT_END(name) \
diff --git a/src/php/ext/grpc/php_grpc.h b/src/php/ext/grpc/php_grpc.h
index e57a06545e6c3f3cbc83055899ceb1ed1d5f80aa..13083b0bc71cb28aadda4bb76a63cd85e1b2a31d 100644
--- a/src/php/ext/grpc/php_grpc.h
+++ b/src/php/ext/grpc/php_grpc.h
@@ -61,10 +61,6 @@ extern zend_module_entry grpc_module_entry;
 
 #include "grpc/grpc.h"
 
-#define RETURN_DESTROY_ZVAL(val)                               \
-  RETURN_ZVAL(val, false /* Don't execute copy constructor */, \
-              true /* Dealloc original before returning */)
-
 /* These are all function declarations */
 /* Code that runs at module initialization */
 PHP_MINIT_FUNCTION(grpc);
diff --git a/src/php/ext/grpc/server_credentials.c b/src/php/ext/grpc/server_credentials.c
index 1610c8ebb0982a6cdf6946289cd5e4b3a47a85d7..3e39fee246c4afe30f1e497ab57d9e2572568bac 100644
--- a/src/php/ext/grpc/server_credentials.c
+++ b/src/php/ext/grpc/server_credentials.c
@@ -113,9 +113,7 @@ PHP_METHOD(ServerCredentials, createSsl) {
   grpc_server_credentials *creds = grpc_ssl_server_credentials_create_ex(
       pem_root_certs, &pem_key_cert_pair, 1,
       GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE, NULL);
-  zval *creds_object;
-  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
-  creds_object = grpc_php_wrap_server_credentials(creds TSRMLS_CC);
+  zval *creds_object = grpc_php_wrap_server_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
diff --git a/src/php/ext/grpc/timeval.c b/src/php/ext/grpc/timeval.c
index 945231b47feb5e26352aefa8d31c3ee9f4c9d38b..7ada915aaddbd113f01f807c9a3437af4d7619eb 100644
--- a/src/php/ext/grpc/timeval.c
+++ b/src/php/ext/grpc/timeval.c
@@ -115,11 +115,9 @@ PHP_METHOD(Timeval, add) {
   }
   wrapped_grpc_timeval *self = Z_WRAPPED_GRPC_TIMEVAL_P(getThis());
   wrapped_grpc_timeval *other = Z_WRAPPED_GRPC_TIMEVAL_P(other_obj);
-  zval *sum;
-  PHP_GRPC_MAKE_STD_ZVAL(sum);
-  sum =
-      grpc_php_wrap_timeval(gpr_time_add(self->wrapped, other->wrapped)
-                            TSRMLS_CC);
+  zval *sum =
+    grpc_php_wrap_timeval(gpr_time_add(self->wrapped, other->wrapped)
+                          TSRMLS_CC);
   RETURN_DESTROY_ZVAL(sum);
 }
 
@@ -141,11 +139,9 @@ PHP_METHOD(Timeval, subtract) {
   }
   wrapped_grpc_timeval *self = Z_WRAPPED_GRPC_TIMEVAL_P(getThis());
   wrapped_grpc_timeval *other = Z_WRAPPED_GRPC_TIMEVAL_P(other_obj);
-  zval *diff;
-  PHP_GRPC_MAKE_STD_ZVAL(diff);
-  diff =
-      grpc_php_wrap_timeval(gpr_time_sub(self->wrapped, other->wrapped)
-                            TSRMLS_CC);
+  zval *diff =
+    grpc_php_wrap_timeval(gpr_time_sub(self->wrapped, other->wrapped)
+                          TSRMLS_CC);
   RETURN_DESTROY_ZVAL(diff);
 }
 
@@ -206,9 +202,7 @@ PHP_METHOD(Timeval, similar) {
  * @return Timeval The current time
  */
 PHP_METHOD(Timeval, now) {
-  zval *now;
-  PHP_GRPC_MAKE_STD_ZVAL(now);
-  now = grpc_php_wrap_timeval(gpr_now(GPR_CLOCK_REALTIME) TSRMLS_CC);
+  zval *now = grpc_php_wrap_timeval(gpr_now(GPR_CLOCK_REALTIME) TSRMLS_CC);
   RETURN_DESTROY_ZVAL(now);
 }
 
@@ -217,13 +211,9 @@ PHP_METHOD(Timeval, now) {
  * @return Timeval Zero length time interval
  */
 PHP_METHOD(Timeval, zero) {
-  zval *grpc_php_timeval_zero;
-  PHP_GRPC_MAKE_STD_ZVAL(grpc_php_timeval_zero);
-  grpc_php_timeval_zero =
-      grpc_php_wrap_timeval(gpr_time_0(GPR_CLOCK_REALTIME) TSRMLS_CC);
-  RETURN_ZVAL(grpc_php_timeval_zero,
-              false, /* Copy original before returning? */
-              true /* Destroy original before returning */);
+  zval *grpc_php_timeval_zero =
+    grpc_php_wrap_timeval(gpr_time_0(GPR_CLOCK_REALTIME) TSRMLS_CC);
+  RETURN_DESTROY_ZVAL(grpc_php_timeval_zero);
 }
 
 /**
@@ -231,10 +221,8 @@ PHP_METHOD(Timeval, zero) {
  * @return Timeval Infinite future time value
  */
 PHP_METHOD(Timeval, infFuture) {
-  zval *grpc_php_timeval_inf_future;
-  PHP_GRPC_MAKE_STD_ZVAL(grpc_php_timeval_inf_future);
-  grpc_php_timeval_inf_future =
-      grpc_php_wrap_timeval(gpr_inf_future(GPR_CLOCK_REALTIME) TSRMLS_CC);
+  zval *grpc_php_timeval_inf_future =
+    grpc_php_wrap_timeval(gpr_inf_future(GPR_CLOCK_REALTIME) TSRMLS_CC);
   RETURN_DESTROY_ZVAL(grpc_php_timeval_inf_future);
 }
 
@@ -243,10 +231,8 @@ PHP_METHOD(Timeval, infFuture) {
  * @return Timeval Infinite past time value
  */
 PHP_METHOD(Timeval, infPast) {
-  zval *grpc_php_timeval_inf_past;
-  PHP_GRPC_MAKE_STD_ZVAL(grpc_php_timeval_inf_past);
-  grpc_php_timeval_inf_past =
-      grpc_php_wrap_timeval(gpr_inf_past(GPR_CLOCK_REALTIME) TSRMLS_CC);
+  zval *grpc_php_timeval_inf_past =
+    grpc_php_wrap_timeval(gpr_inf_past(GPR_CLOCK_REALTIME) TSRMLS_CC);
   RETURN_DESTROY_ZVAL(grpc_php_timeval_inf_past);
 }
 
diff --git a/src/php/lib/Grpc/AbstractCall.php b/src/php/lib/Grpc/AbstractCall.php
index c4d56790f7568e1d5c2355d2260e24a152f8a017..9f0b02b8bbcfb75044028aedeef3d709e5282a10 100644
--- a/src/php/lib/Grpc/AbstractCall.php
+++ b/src/php/lib/Grpc/AbstractCall.php
@@ -62,7 +62,7 @@ abstract class AbstractCall
         Channel $channel,
         $method,
         $deserialize,
-        $options = []
+        array $options = []
     ) {
         if (array_key_exists('timeout', $options) &&
             is_numeric($timeout = $options['timeout'])
@@ -89,7 +89,7 @@ abstract class AbstractCall
     }
 
     /**
-     * @return mixed The metadata sent by the server.
+     * @return mixed The metadata sent by the server
      */
     public function getMetadata()
     {
@@ -97,7 +97,7 @@ abstract class AbstractCall
     }
 
     /**
-     * @return mixed The trailing metadata sent by the server.
+     * @return mixed The trailing metadata sent by the server
      */
     public function getTrailingMetadata()
     {
@@ -105,7 +105,7 @@ abstract class AbstractCall
     }
 
     /**
-     * @return string The URI of the endpoint.
+     * @return string The URI of the endpoint
      */
     public function getPeer()
     {
@@ -167,8 +167,7 @@ abstract class AbstractCall
     /**
      * Set the CallCredentials for the underlying Call.
      *
-     * @param CallCredentials $call_credentials The CallCredentials
-     *                                          object
+     * @param CallCredentials $call_credentials The CallCredentials object
      */
     public function setCallCredentials($call_credentials)
     {
diff --git a/src/php/lib/Grpc/BaseStub.php b/src/php/lib/Grpc/BaseStub.php
index d0baeae955bb4a07a807861e8db1df054fe0be5e..a9e77b9396acf948512b0ac487a6901bea12dcac 100644
--- a/src/php/lib/Grpc/BaseStub.php
+++ b/src/php/lib/Grpc/BaseStub.php
@@ -48,14 +48,14 @@ class BaseStub
     private $update_metadata;
 
     /**
-     * @param $hostname string
-     * @param $opts array
+     * @param string  $hostname
+     * @param array   $opts
      *  - 'update_metadata': (optional) a callback function which takes in a
      * metadata array, and returns an updated metadata array
      *  - 'grpc.primary_user_agent': (optional) a user-agent string
-     * @param $channel Channel An already created Channel object
+     * @param Channel $channel An already created Channel object (optional)
      */
-    public function __construct($hostname, $opts, $channel = null)
+    public function __construct($hostname, $opts, Channel $channel = null)
     {
         $ssl_roots = file_get_contents(
             dirname(__FILE__).'/../../../../etc/roots.pem');
@@ -98,7 +98,7 @@ class BaseStub
     }
 
     /**
-     * @return string The URI of the endpoint.
+     * @return string The URI of the endpoint
      */
     public function getTarget()
     {
@@ -106,7 +106,7 @@ class BaseStub
     }
 
     /**
-     * @param $try_to_connect bool
+     * @param bool $try_to_connect (optional)
      *
      * @return int The grpc connectivity state
      */
@@ -145,6 +145,12 @@ class BaseStub
         return $this->_checkConnectivityState($new_state);
     }
 
+    /**
+     * @param $new_state Connect state
+     *
+     * @return bool true if state is CHANNEL_READY
+     * @throw Exception if state is CHANNEL_FATAL_FAILURE
+     */
     private function _checkConnectivityState($new_state)
     {
         if ($new_state == \Grpc\CHANNEL_READY) {
@@ -167,6 +173,10 @@ class BaseStub
 
     /**
      * constructs the auth uri for the jwt.
+     *
+     * @param string $method The method string
+     *
+     * @return string The URL string
      */
     private function _get_jwt_aud_uri($method)
     {
@@ -191,7 +201,7 @@ class BaseStub
      *
      * @param array $metadata The metadata map
      *
-     * @return $metadata Validated and key-normalized metadata map
+     * @return array $metadata Validated and key-normalized metadata map
      * @throw InvalidArgumentException if key contains invalid characters
      */
     private function _validate_and_normalize_metadata($metadata)
@@ -220,14 +230,16 @@ class BaseStub
      * @param mixed    $argument    The argument to the method
      * @param callable $deserialize A function that deserializes the response
      * @param array    $metadata    A metadata map to send to the server
+     *                              (optional)
+     * @param array    $options     An array of options (optional)
      *
      * @return SimpleSurfaceActiveCall The active call object
      */
     public function _simpleRequest($method,
                                    $argument,
                                    $deserialize,
-                                   $metadata = [],
-                                   $options = [])
+                                   array $metadata = [],
+                                   array $options = [])
     {
         $call = new UnaryCall($this->channel,
                               $method,
@@ -251,17 +263,17 @@ class BaseStub
      * output.
      *
      * @param string   $method      The name of the method to call
-     * @param array    $arguments   An array or Traversable of arguments to stream to the
-     *                              server
      * @param callable $deserialize A function that deserializes the response
      * @param array    $metadata    A metadata map to send to the server
+     *                              (optional)
+     * @param array    $options     An array of options (optional)
      *
      * @return ClientStreamingSurfaceActiveCall The active call object
      */
     public function _clientStreamRequest($method,
-                                         callable $deserialize,
-                                         $metadata = [],
-                                         $options = [])
+                                         $deserialize,
+                                         array $metadata = [],
+                                         array $options = [])
     {
         $call = new ClientStreamingCall($this->channel,
                                         $method,
@@ -281,21 +293,23 @@ class BaseStub
     }
 
     /**
-     * Call a remote method that takes a single argument and returns a stream of
-     * responses.
+     * Call a remote method that takes a single argument and returns a stream
+     * of responses.
      *
      * @param string   $method      The name of the method to call
      * @param mixed    $argument    The argument to the method
      * @param callable $deserialize A function that deserializes the responses
      * @param array    $metadata    A metadata map to send to the server
+     *                              (optional)
+     * @param array    $options     An array of options (optional)
      *
      * @return ServerStreamingSurfaceActiveCall The active call object
      */
     public function _serverStreamRequest($method,
                                          $argument,
-                                         callable $deserialize,
-                                         $metadata = [],
-                                         $options = [])
+                                         $deserialize,
+                                         array $metadata = [],
+                                         array $options = [])
     {
         $call = new ServerStreamingCall($this->channel,
                                         $method,
@@ -320,13 +334,15 @@ class BaseStub
      * @param string   $method      The name of the method to call
      * @param callable $deserialize A function that deserializes the responses
      * @param array    $metadata    A metadata map to send to the server
+     *                              (optional)
+     * @param array    $options     An array of options (optional)
      *
      * @return BidiStreamingSurfaceActiveCall The active call object
      */
     public function _bidiRequest($method,
-                                 callable $deserialize,
-                                 $metadata = [],
-                                 $options = [])
+                                 $deserialize,
+                                 array $metadata = [],
+                                 array $options = [])
     {
         $call = new BidiStreamingCall($this->channel,
                                       $method,
diff --git a/src/php/lib/Grpc/BidiStreamingCall.php b/src/php/lib/Grpc/BidiStreamingCall.php
index f0e1e811def73d4fb7e86f81846948b0dac0dabc..b03bbd204fb447b9efd90efcdf67f7506926093b 100644
--- a/src/php/lib/Grpc/BidiStreamingCall.php
+++ b/src/php/lib/Grpc/BidiStreamingCall.php
@@ -35,8 +35,8 @@
 namespace Grpc;
 
 /**
- * Represents an active call that allows for sending and recieving messages in
- * streams in any order.
+ * Represents an active call that allows for sending and recieving messages
+ * in streams in any order.
  */
 class BidiStreamingCall extends AbstractCall
 {
@@ -44,6 +44,7 @@ class BidiStreamingCall extends AbstractCall
      * Start the call.
      *
      * @param array $metadata Metadata to send with the call, if applicable
+     *                        (optional)
      */
     public function start(array $metadata = [])
     {
@@ -76,10 +77,10 @@ class BidiStreamingCall extends AbstractCall
      * writesDone is called.
      *
      * @param ByteBuffer $data    The data to write
-     * @param array      $options an array of options, possible keys:
-     *                            'flags' => a number
+     * @param array      $options An array of options, possible keys:
+     *                            'flags' => a number (optional)
      */
-    public function write($data, $options = [])
+    public function write($data, array $options = [])
     {
         $message_array = ['message' => $this->serializeMessage($data)];
         if (array_key_exists('flags', $options)) {
@@ -103,8 +104,8 @@ class BidiStreamingCall extends AbstractCall
     /**
      * Wait for the server to send the status, and return it.
      *
-     * @return \stdClass The status object, with integer $code, string $details,
-     *                   and array $metadata members
+     * @return \stdClass The status object, with integer $code, string
+     *                   $details, and array $metadata members
      */
     public function getStatus()
     {
diff --git a/src/php/lib/Grpc/ClientStreamingCall.php b/src/php/lib/Grpc/ClientStreamingCall.php
index 20db809ea3ca79e83b9eba827fec1904527ae1aa..c542f08872744214a3937b0045889df66be26add 100644
--- a/src/php/lib/Grpc/ClientStreamingCall.php
+++ b/src/php/lib/Grpc/ClientStreamingCall.php
@@ -35,8 +35,8 @@
 namespace Grpc;
 
 /**
- * Represents an active call that sends a stream of messages and then gets a
- * single response.
+ * Represents an active call that sends a stream of messages and then gets
+ * a single response.
  */
 class ClientStreamingCall extends AbstractCall
 {
@@ -44,8 +44,9 @@ class ClientStreamingCall extends AbstractCall
      * Start the call.
      *
      * @param array $metadata Metadata to send with the call, if applicable
+     *                        (optional)
      */
-    public function start($metadata = [])
+    public function start(array $metadata = [])
     {
         $this->call->startBatch([
             OP_SEND_INITIAL_METADATA => $metadata,
@@ -57,8 +58,8 @@ class ClientStreamingCall extends AbstractCall
      * wait is called.
      *
      * @param ByteBuffer $data    The data to write
-     * @param array      $options an array of options, possible keys:
-     *                            'flags' => a number
+     * @param array      $options An array of options, possible keys:
+     *                            'flags' => a number (optional)
      */
     public function write($data, array $options = [])
     {
diff --git a/src/php/lib/Grpc/ServerStreamingCall.php b/src/php/lib/Grpc/ServerStreamingCall.php
index 5aeeafa94adcfb805c1f1a71ddb4a0e76e170cde..406512bf579497e003eca148b0aaafeccce0c720 100644
--- a/src/php/lib/Grpc/ServerStreamingCall.php
+++ b/src/php/lib/Grpc/ServerStreamingCall.php
@@ -35,8 +35,8 @@
 namespace Grpc;
 
 /**
- * Represents an active call that sends a single message and then gets a stream
- * of responses.
+ * Represents an active call that sends a single message and then gets a
+ * stream of responses.
  */
 class ServerStreamingCall extends AbstractCall
 {
@@ -45,10 +45,11 @@ class ServerStreamingCall extends AbstractCall
      *
      * @param mixed $data     The data to send
      * @param array $metadata Metadata to send with the call, if applicable
-     * @param array $options  an array of options, possible keys:
-     *                        'flags' => a number
+     *                        (optional)
+     * @param array $options  An array of options, possible keys:
+     *                        'flags' => a number (optional)
      */
-    public function start($data, $metadata = [], $options = [])
+    public function start($data, array $metadata = [], array $options = [])
     {
         $message_array = ['message' => $this->serializeMessage($data)];
         if (array_key_exists('flags', $options)) {
@@ -82,8 +83,8 @@ class ServerStreamingCall extends AbstractCall
     /**
      * Wait for the server to send the status, and return it.
      *
-     * @return \stdClass The status object, with integer $code, string $details,
-     *                   and array $metadata members
+     * @return \stdClass The status object, with integer $code, string
+     *                   $details, and array $metadata members
      */
     public function getStatus()
     {
diff --git a/src/php/lib/Grpc/UnaryCall.php b/src/php/lib/Grpc/UnaryCall.php
index e8eb6487a8c0b36c6f4eb6c7363a09b6bceb1d00..3c1cb158ea563df9f8765fac891a955442508f57 100644
--- a/src/php/lib/Grpc/UnaryCall.php
+++ b/src/php/lib/Grpc/UnaryCall.php
@@ -35,8 +35,8 @@
 namespace Grpc;
 
 /**
- * Represents an active call that sends a single message and then gets a single
- * response.
+ * Represents an active call that sends a single message and then gets a
+ * single response.
  */
 class UnaryCall extends AbstractCall
 {
@@ -45,10 +45,11 @@ class UnaryCall extends AbstractCall
      *
      * @param mixed $data     The data to send
      * @param array $metadata Metadata to send with the call, if applicable
-     * @param array $options  an array of options, possible keys:
-     *                        'flags' => a number
+     *                        (optional)
+     * @param array $options  An array of options, possible keys:
+     *                        'flags' => a number (optional)
      */
-    public function start($data, $metadata = [], $options = [])
+    public function start($data, array $metadata = [], array $options = [])
     {
         $message_array = ['message' => $this->serializeMessage($data)];
         if (isset($options['flags'])) {
diff --git a/src/php/tests/interop/interop_client.php b/src/php/tests/interop/interop_client.php
index d201915d668e2f05560561836b1fd7915d45b0e0..2acf5612c7e3b1b50d20686fec73d56add6782da 100755
--- a/src/php/tests/interop/interop_client.php
+++ b/src/php/tests/interop/interop_client.php
@@ -451,11 +451,22 @@ function customMetadata($stub)
 
     $streaming_request = new grpc\testing\StreamingOutputCallRequest();
     $streaming_request->setPayload($payload);
+    $response_parameters = new grpc\testing\ResponseParameters();
+    $response_parameters->setSize($response_len);
+    $streaming_request->getResponseParameters()[] = $response_parameters;
     $streaming_call->write($streaming_request);
     $streaming_call->writesDone();
+    $result = $streaming_call->read();
 
     hardAssertIfStatusOk($streaming_call->getStatus());
 
+    $streaming_initial_metadata = $streaming_call->getMetadata();
+    hardAssert(array_key_exists($ECHO_INITIAL_KEY, $streaming_initial_metadata),
+               'Initial metadata does not contain expected key');
+    hardAssert(
+        $streaming_initial_metadata[$ECHO_INITIAL_KEY][0] === $ECHO_INITIAL_VALUE,
+        'Incorrect initial metadata value');
+
     $streaming_trailing_metadata = $streaming_call->getTrailingMetadata();
     hardAssert(array_key_exists($ECHO_TRAILING_KEY,
                                 $streaming_trailing_metadata),
diff --git a/src/proto/grpc/testing/BUILD b/src/proto/grpc/testing/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..283740839d976280eb8e6ec072200619b7536a8b
--- /dev/null
+++ b/src/proto/grpc/testing/BUILD
@@ -0,0 +1,93 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+package(default_visibility = ["//visibility:public"])
+
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
+
+grpc_proto_library(
+    name = "compiler_test_proto",
+    srcs = ["compiler_test.proto"],
+)
+
+grpc_proto_library(
+    name = "control_proto",
+    srcs = ["control.proto"],
+    deps = ["payloads_proto", "stats_proto"],
+)
+
+grpc_proto_library(
+    name = "echo_messages_proto",
+    srcs = ["echo_messages.proto"],
+)
+
+grpc_proto_library(
+    name = "echo_proto",
+    srcs = ["echo.proto"],
+    deps = ["echo_messages_proto"],
+)
+
+grpc_proto_library(
+    name = "empty_proto",
+    srcs = ["empty.proto"],
+)
+
+grpc_proto_library(
+    name = "messages_proto",
+    srcs = ["messages.proto"],
+)
+
+grpc_proto_library(
+    name = "metrics_proto",
+    srcs = ["metrics.proto"],
+)
+
+grpc_proto_library(
+    name = "payloads_proto",
+    srcs = ["payloads.proto"],
+)
+
+grpc_proto_library(
+    name = "services_proto",
+    srcs = ["services.proto"],
+    deps = ["control_proto", "messages_proto"],
+)
+
+grpc_proto_library(
+    name = "stats_proto",
+    srcs = ["stats.proto"],
+)
+
+grpc_proto_library(
+    name = "test_proto",
+    srcs = ["test.proto"],
+    deps = ["empty_proto", "messages_proto"],
+)
diff --git a/src/proto/grpc/testing/control.proto b/src/proto/grpc/testing/control.proto
index be387cf7869279cbd5d2de9d5f1690e8c1cc2098..529313cfb1ea5f38b0d9576838f2d1385acfe5f1 100644
--- a/src/proto/grpc/testing/control.proto
+++ b/src/proto/grpc/testing/control.proto
@@ -78,6 +78,14 @@ message SecurityParams {
   string server_host_override = 2;
 }
 
+message ChannelArg {
+  string name = 1;
+  oneof value {
+    string str_value = 2;
+    int32 int_value = 3;
+  }
+}
+
 message ClientConfig {
   // List of targets to connect to. At least one target needs to be specified.
   repeated string server_targets = 1;
@@ -103,6 +111,8 @@ message ClientConfig {
 
   // If we use an OTHER_CLIENT client_type, this string gives more detail
   string other_client_api = 15;
+
+  repeated ChannelArg channel_args = 16;
 }
 
 message ClientStatus { ClientStats stats = 1; }
diff --git a/src/proto/grpc/testing/duplicate/BUILD b/src/proto/grpc/testing/duplicate/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..8fc5a96af40b267d2ef07febdb87b00a7a01b966
--- /dev/null
+++ b/src/proto/grpc/testing/duplicate/BUILD
@@ -0,0 +1,40 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+package(default_visibility = ["//visibility:public"])
+
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
+
+grpc_proto_library(
+    name = "echo_duplicate_proto",
+    srcs = ["echo_duplicate.proto"],
+    deps = ["//src/proto/grpc/testing:echo_messages_proto"],
+)
diff --git a/src/python/grpcio/_spawn_patch.py b/src/python/grpcio/_spawn_patch.py
index 24306f0dd95ae9622c00b67ed1f13dbc21a6725f..75d0a8b3527a7545342b2085af56d66862b61c05 100644
--- a/src/python/grpcio/_spawn_patch.py
+++ b/src/python/grpcio/_spawn_patch.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Patches the spawn() command for windows compilers.
 
 Windows has an 8191 character command line limit, but some compilers
@@ -45,29 +44,32 @@ MAX_COMMAND_LENGTH = 8191
 
 _classic_spawn = ccompiler.CCompiler.spawn
 
+
 def _commandfile_spawn(self, command):
-  command_length = sum([len(arg) for arg in command])
-  if os.name == 'nt' and command_length > MAX_COMMAND_LENGTH:
-    # Even if this command doesn't support the @command_file, it will
-    # fail as is so we try blindly
-    print('Command line length exceeded, using command file')
-    print(' '.join(command))
-    temporary_directory = tempfile.mkdtemp()
-    command_filename = os.path.abspath(
-    os.path.join(temporary_directory, 'command'))
-    with open(command_filename, 'w') as command_file:
-      escaped_args = ['"' + arg.replace('\\', '\\\\') + '"' for arg in command[1:]]
-      command_file.write(' '.join(escaped_args))
-    modified_command = command[:1] + ['@{}'.format(command_filename)]
-    try:
-      _classic_spawn(self, modified_command)
-    finally:
-      shutil.rmtree(temporary_directory)
-  else:
-    _classic_spawn(self, command)
+    command_length = sum([len(arg) for arg in command])
+    if os.name == 'nt' and command_length > MAX_COMMAND_LENGTH:
+        # Even if this command doesn't support the @command_file, it will
+        # fail as is so we try blindly
+        print('Command line length exceeded, using command file')
+        print(' '.join(command))
+        temporary_directory = tempfile.mkdtemp()
+        command_filename = os.path.abspath(
+            os.path.join(temporary_directory, 'command'))
+        with open(command_filename, 'w') as command_file:
+            escaped_args = [
+                '"' + arg.replace('\\', '\\\\') + '"' for arg in command[1:]
+            ]
+            command_file.write(' '.join(escaped_args))
+        modified_command = command[:1] + ['@{}'.format(command_filename)]
+        try:
+            _classic_spawn(self, modified_command)
+        finally:
+            shutil.rmtree(temporary_directory)
+    else:
+        _classic_spawn(self, command)
 
 
 def monkeypatch_spawn():
-  """Monkeypatching is dumb, but it's either that or we become maintainers of
+    """Monkeypatching is dumb, but it's either that or we become maintainers of
      something much, much bigger."""
-  ccompiler.CCompiler.spawn = _commandfile_spawn
+    ccompiler.CCompiler.spawn = _commandfile_spawn
diff --git a/src/python/grpcio/commands.py b/src/python/grpcio/commands.py
index ea3b6f3391debaa6d27e28f58c3db6a9734f52ce..e09f92259120da975381e66419e47e21d4b35882 100644
--- a/src/python/grpcio/commands.py
+++ b/src/python/grpcio/commands.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Provides distutils command classes for the GRPC Python setup process."""
 
 import distutils
@@ -62,6 +61,7 @@ napoleon_numpy_docstring = True
 napoleon_include_special_with_doc = True
 
 html_theme = 'sphinx_rtd_theme'
+copyright = "2016, The gRPC Authors"
 """
 
 API_GLOSSARY = """
@@ -86,138 +86,144 @@ Glossary
 
 
 class CommandError(Exception):
-  """Simple exception class for GRPC custom commands."""
+    """Simple exception class for GRPC custom commands."""
 
 
 # TODO(atash): Remove this once PyPI has better Linux bdist support. See
 # https://bitbucket.org/pypa/pypi/issues/120/binary-wheels-for-linux-are-not-supported
 def _get_grpc_custom_bdist(decorated_basename, target_bdist_basename):
-  """Returns a string path to a bdist file for Linux to install.
+    """Returns a string path to a bdist file for Linux to install.
 
   If we can retrieve a pre-compiled bdist from online, uses it. Else, emits a
   warning and builds from source.
   """
-  # TODO(atash): somehow the name that's returned from `wheel` is different
-  # between different versions of 'wheel' (but from a compatibility standpoint,
-  # the names are compatible); we should have some way of determining name
-  # compatibility in the same way `wheel` does to avoid having to rename all of
-  # the custom wheels that we build/upload to GCS.
-
-  # Break import style to ensure that setup.py has had a chance to install the
-  # relevant package.
-  from six.moves.urllib import request
-  decorated_path = decorated_basename + GRPC_CUSTOM_BDIST_EXT
-  try:
-    url = BINARIES_REPOSITORY + '/{target}'.format(target=decorated_path)
-    bdist_data = request.urlopen(url).read()
-  except IOError as error:
-    raise CommandError(
-        '{}\n\nCould not find the bdist {}: {}'
-            .format(traceback.format_exc(), decorated_path, error.message))
-  # Our chosen local bdist path.
-  bdist_path = target_bdist_basename + GRPC_CUSTOM_BDIST_EXT
-  try:
-    with open(bdist_path, 'w') as bdist_file:
-      bdist_file.write(bdist_data)
-  except IOError as error:
-    raise CommandError(
-        '{}\n\nCould not write grpcio bdist: {}'
-            .format(traceback.format_exc(), error.message))
-  return bdist_path
+    # TODO(atash): somehow the name that's returned from `wheel` is different
+    # between different versions of 'wheel' (but from a compatibility standpoint,
+    # the names are compatible); we should have some way of determining name
+    # compatibility in the same way `wheel` does to avoid having to rename all of
+    # the custom wheels that we build/upload to GCS.
+
+    # Break import style to ensure that setup.py has had a chance to install the
+    # relevant package.
+    from six.moves.urllib import request
+    decorated_path = decorated_basename + GRPC_CUSTOM_BDIST_EXT
+    try:
+        url = BINARIES_REPOSITORY + '/{target}'.format(target=decorated_path)
+        bdist_data = request.urlopen(url).read()
+    except IOError as error:
+        raise CommandError('{}\n\nCould not find the bdist {}: {}'.format(
+            traceback.format_exc(), decorated_path, error.message))
+    # Our chosen local bdist path.
+    bdist_path = target_bdist_basename + GRPC_CUSTOM_BDIST_EXT
+    try:
+        with open(bdist_path, 'w') as bdist_file:
+            bdist_file.write(bdist_data)
+    except IOError as error:
+        raise CommandError('{}\n\nCould not write grpcio bdist: {}'
+                           .format(traceback.format_exc(), error.message))
+    return bdist_path
 
 
 class SphinxDocumentation(setuptools.Command):
-  """Command to generate documentation via sphinx."""
-
-  description = 'generate sphinx documentation'
-  user_options = []
-
-  def initialize_options(self):
-    pass
-
-  def finalize_options(self):
-    pass
-
-  def run(self):
-    # We import here to ensure that setup.py has had a chance to install the
-    # relevant package eggs first.
-    import sphinx
-    import sphinx.apidoc
-    metadata = self.distribution.metadata
-    src_dir = os.path.join(PYTHON_STEM, 'grpc')
-    sys.path.append(src_dir)
-    sphinx.apidoc.main([
-        '', '--force', '--full', '-H', metadata.name, '-A', metadata.author,
-        '-V', metadata.version, '-R', metadata.version,
-        '-o', os.path.join('doc', 'src'), src_dir])
-    conf_filepath = os.path.join('doc', 'src', 'conf.py')
-    with open(conf_filepath, 'a') as conf_file:
-      conf_file.write(CONF_PY_ADDENDUM)
-    glossary_filepath = os.path.join('doc', 'src', 'grpc.rst')
-    with open(glossary_filepath, 'a') as glossary_filepath:
-      glossary_filepath.write(API_GLOSSARY)
-    sphinx.main(['', os.path.join('doc', 'src'), os.path.join('doc', 'build')])
+    """Command to generate documentation via sphinx."""
+
+    description = 'generate sphinx documentation'
+    user_options = []
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        # We import here to ensure that setup.py has had a chance to install the
+        # relevant package eggs first.
+        import sphinx
+        import sphinx.apidoc
+        metadata = self.distribution.metadata
+        src_dir = os.path.join(PYTHON_STEM, 'grpc')
+        sys.path.append(src_dir)
+        sphinx.apidoc.main([
+            '', '--force', '--full', '-H', metadata.name, '-A', metadata.author,
+            '-V', metadata.version, '-R', metadata.version, '-o',
+            os.path.join('doc', 'src'), src_dir
+        ])
+        conf_filepath = os.path.join('doc', 'src', 'conf.py')
+        with open(conf_filepath, 'a') as conf_file:
+            conf_file.write(CONF_PY_ADDENDUM)
+        glossary_filepath = os.path.join('doc', 'src', 'grpc.rst')
+        with open(glossary_filepath, 'a') as glossary_filepath:
+            glossary_filepath.write(API_GLOSSARY)
+        sphinx.main(
+            ['', os.path.join('doc', 'src'), os.path.join('doc', 'build')])
 
 
 class BuildProjectMetadata(setuptools.Command):
-  """Command to generate project metadata in a module."""
+    """Command to generate project metadata in a module."""
 
-  description = 'build grpcio project metadata files'
-  user_options = []
+    description = 'build grpcio project metadata files'
+    user_options = []
 
-  def initialize_options(self):
-    pass
+    def initialize_options(self):
+        pass
 
-  def finalize_options(self):
-    pass
+    def finalize_options(self):
+        pass
 
-  def run(self):
-    with open(os.path.join(PYTHON_STEM, 'grpc/_grpcio_metadata.py'), 'w') as module_file:
-      module_file.write('__version__ = """{}"""'.format(
-          self.distribution.get_version()))
+    def run(self):
+        with open(os.path.join(PYTHON_STEM, 'grpc/_grpcio_metadata.py'),
+                  'w') as module_file:
+            module_file.write('__version__ = """{}"""'.format(
+                self.distribution.get_version()))
 
 
 class BuildPy(build_py.build_py):
-  """Custom project build command."""
+    """Custom project build command."""
 
-  def run(self):
-    self.run_command('build_project_metadata')
-    build_py.build_py.run(self)
+    def run(self):
+        self.run_command('build_project_metadata')
+        build_py.build_py.run(self)
 
 
 def _poison_extensions(extensions, message):
-  """Includes a file that will always fail to compile in all extensions."""
-  poison_filename = os.path.join(PYTHON_STEM, 'poison.c')
-  with open(poison_filename, 'w') as poison:
-    poison.write('#error {}'.format(message))
-  for extension in extensions:
-    extension.sources = [poison_filename]
+    """Includes a file that will always fail to compile in all extensions."""
+    poison_filename = os.path.join(PYTHON_STEM, 'poison.c')
+    with open(poison_filename, 'w') as poison:
+        poison.write('#error {}'.format(message))
+    for extension in extensions:
+        extension.sources = [poison_filename]
+
 
 def check_and_update_cythonization(extensions):
-  """Replace .pyx files with their generated counterparts and return whether or
+    """Replace .pyx files with their generated counterparts and return whether or
      not cythonization still needs to occur."""
-  for extension in extensions:
-    generated_pyx_sources = []
-    other_sources = []
-    for source in extension.sources:
-      base, file_ext = os.path.splitext(source)
-      if file_ext == '.pyx':
-        generated_pyx_source = next(
-            (base + gen_ext for gen_ext in ('.c', '.cpp',)
-             if os.path.isfile(base + gen_ext)), None)
-        if generated_pyx_source:
-          generated_pyx_sources.append(generated_pyx_source)
-        else:
-          sys.stderr.write('Cython-generated files are missing...\n')
-          return False
-      else:
-        other_sources.append(source)
-    extension.sources = generated_pyx_sources + other_sources
-  sys.stderr.write('Found cython-generated files...\n')
-  return True
+    for extension in extensions:
+        generated_pyx_sources = []
+        other_sources = []
+        for source in extension.sources:
+            base, file_ext = os.path.splitext(source)
+            if file_ext == '.pyx':
+                generated_pyx_source = next((base + gen_ext
+                                             for gen_ext in (
+                                                 '.c',
+                                                 '.cpp',)
+                                             if os.path.isfile(base + gen_ext)),
+                                            None)
+                if generated_pyx_source:
+                    generated_pyx_sources.append(generated_pyx_source)
+                else:
+                    sys.stderr.write('Cython-generated files are missing...\n')
+                    return False
+            else:
+                other_sources.append(source)
+        extension.sources = generated_pyx_sources + other_sources
+    sys.stderr.write('Found cython-generated files...\n')
+    return True
+
 
 def try_cythonize(extensions, linetracing=False, mandatory=True):
-  """Attempt to cythonize the extensions.
+    """Attempt to cythonize the extensions.
 
   Args:
     extensions: A list of `distutils.extension.Extension`.
@@ -225,78 +231,83 @@ def try_cythonize(extensions, linetracing=False, mandatory=True):
     mandatory: Whether or not having Cython-generated files is mandatory. If it
       is, extensions will be poisoned when they can't be fully generated.
   """
-  try:
-    # Break import style to ensure we have access to Cython post-setup_requires
-    import Cython.Build
-  except ImportError:
-    if mandatory:
-      sys.stderr.write(
-          "This package needs to generate C files with Cython but it cannot. "
-          "Poisoning extension sources to disallow extension commands...")
-      _poison_extensions(
-          extensions,
-          "Extensions have been poisoned due to missing Cython-generated code.")
-    return extensions
-  cython_compiler_directives = {}
-  if linetracing:
-    additional_define_macros = [('CYTHON_TRACE_NOGIL', '1')]
-    cython_compiler_directives['linetrace'] = True
-  return Cython.Build.cythonize(
-    extensions,
-    include_path=[
-      include_dir for extension in extensions for include_dir in extension.include_dirs
-    ] + [CYTHON_STEM],
-    compiler_directives=cython_compiler_directives
-  )
+    try:
+        # Break import style to ensure we have access to Cython post-setup_requires
+        import Cython.Build
+    except ImportError:
+        if mandatory:
+            sys.stderr.write(
+                "This package needs to generate C files with Cython but it cannot. "
+                "Poisoning extension sources to disallow extension commands...")
+            _poison_extensions(
+                extensions,
+                "Extensions have been poisoned due to missing Cython-generated code."
+            )
+        return extensions
+    cython_compiler_directives = {}
+    if linetracing:
+        additional_define_macros = [('CYTHON_TRACE_NOGIL', '1')]
+        cython_compiler_directives['linetrace'] = True
+    return Cython.Build.cythonize(
+        extensions,
+        include_path=[
+            include_dir
+            for extension in extensions
+            for include_dir in extension.include_dirs
+        ] + [CYTHON_STEM],
+        compiler_directives=cython_compiler_directives)
 
 
 class BuildExt(build_ext.build_ext):
-  """Custom build_ext command to enable compiler-specific flags."""
-
-  C_OPTIONS = {
-      'unix': ('-pthread', '-std=gnu99'),
-      'msvc': (),
-  }
-  LINK_OPTIONS = {}
-
-  def build_extensions(self):
-    compiler = self.compiler.compiler_type
-    if compiler in BuildExt.C_OPTIONS:
-      for extension in self.extensions:
-        extension.extra_compile_args += list(BuildExt.C_OPTIONS[compiler])
-    if compiler in BuildExt.LINK_OPTIONS:
-      for extension in self.extensions:
-        extension.extra_link_args += list(BuildExt.LINK_OPTIONS[compiler])
-    if not check_and_update_cythonization(self.extensions):
-      self.extensions = try_cythonize(self.extensions)
-    try:
-      build_ext.build_ext.build_extensions(self)
-    except Exception as error:
-      formatted_exception = traceback.format_exc()
-      support.diagnose_build_ext_error(self, error, formatted_exception)
-      raise CommandError(
-          "Failed `build_ext` step:\n{}".format(formatted_exception))
+    """Custom build_ext command to enable compiler-specific flags."""
+
+    C_OPTIONS = {
+        'unix': ('-pthread', '-std=gnu99'),
+        'msvc': (),
+    }
+    LINK_OPTIONS = {}
+
+    def build_extensions(self):
+        compiler = self.compiler.compiler_type
+        if compiler in BuildExt.C_OPTIONS:
+            for extension in self.extensions:
+                extension.extra_compile_args += list(BuildExt.C_OPTIONS[
+                    compiler])
+        if compiler in BuildExt.LINK_OPTIONS:
+            for extension in self.extensions:
+                extension.extra_link_args += list(BuildExt.LINK_OPTIONS[
+                    compiler])
+        if not check_and_update_cythonization(self.extensions):
+            self.extensions = try_cythonize(self.extensions)
+        try:
+            build_ext.build_ext.build_extensions(self)
+        except Exception as error:
+            formatted_exception = traceback.format_exc()
+            support.diagnose_build_ext_error(self, error, formatted_exception)
+            raise CommandError("Failed `build_ext` step:\n{}".format(
+                formatted_exception))
 
 
 class Gather(setuptools.Command):
-  """Command to gather project dependencies."""
-
-  description = 'gather dependencies for grpcio'
-  user_options = [
-    ('test', 't', 'flag indicating to gather test dependencies'),
-    ('install', 'i', 'flag indicating to gather install dependencies')
-  ]
-
-  def initialize_options(self):
-    self.test = False
-    self.install = False
-
-  def finalize_options(self):
-    # distutils requires this override.
-    pass
-
-  def run(self):
-    if self.install and self.distribution.install_requires:
-      self.distribution.fetch_build_eggs(self.distribution.install_requires)
-    if self.test and self.distribution.tests_require:
-      self.distribution.fetch_build_eggs(self.distribution.tests_require)
+    """Command to gather project dependencies."""
+
+    description = 'gather dependencies for grpcio'
+    user_options = [
+        ('test', 't', 'flag indicating to gather test dependencies'),
+        ('install', 'i', 'flag indicating to gather install dependencies')
+    ]
+
+    def initialize_options(self):
+        self.test = False
+        self.install = False
+
+    def finalize_options(self):
+        # distutils requires this override.
+        pass
+
+    def run(self):
+        if self.install and self.distribution.install_requires:
+            self.distribution.fetch_build_eggs(
+                self.distribution.install_requires)
+        if self.test and self.distribution.tests_require:
+            self.distribution.fetch_build_eggs(self.distribution.tests_require)
diff --git a/src/python/grpcio/grpc/__init__.py b/src/python/grpcio/grpc/__init__.py
index 9defb3184d6fdc4102da561be207068910ace53a..abe14e70498e31691bdf269bac0399b22eb0aee4 100644
--- a/src/python/grpcio/grpc/__init__.py
+++ b/src/python/grpcio/grpc/__init__.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """gRPC's Python API."""
 
 import abc
@@ -37,28 +36,27 @@ import six
 
 from grpc._cython import cygrpc as _cygrpc
 
-
 ############################## Future Interface  ###############################
 
 
 class FutureTimeoutError(Exception):
-  """Indicates that a method call on a Future timed out."""
+    """Indicates that a method call on a Future timed out."""
 
 
 class FutureCancelledError(Exception):
-  """Indicates that the computation underlying a Future was cancelled."""
+    """Indicates that the computation underlying a Future was cancelled."""
 
 
 class Future(six.with_metaclass(abc.ABCMeta)):
-  """A representation of a computation in another control flow.
+    """A representation of a computation in another control flow.
 
   Computations represented by a Future may be yet to be begun, may be ongoing,
   or may have already completed.
   """
 
-  @abc.abstractmethod
-  def cancel(self):
-    """Attempts to cancel the computation.
+    @abc.abstractmethod
+    def cancel(self):
+        """Attempts to cancel the computation.
 
     This method does not block.
 
@@ -71,11 +69,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         remote system for which a determination of whether or not it commenced
         before being cancelled cannot be made without blocking.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def cancelled(self):
-    """Describes whether the computation was cancelled.
+    @abc.abstractmethod
+    def cancelled(self):
+        """Describes whether the computation was cancelled.
 
     This method does not block.
 
@@ -85,11 +83,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         not limited to this object's cancel method not having been called and
         the computation's result having become immediately available.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def running(self):
-    """Describes whether the computation is taking place.
+    @abc.abstractmethod
+    def running(self):
+        """Describes whether the computation is taking place.
 
     This method does not block.
 
@@ -98,11 +96,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         taking place now, or False if the computation took place in the past or
         was cancelled.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def done(self):
-    """Describes whether the computation has taken place.
+    @abc.abstractmethod
+    def done(self):
+        """Describes whether the computation has taken place.
 
     This method does not block.
 
@@ -111,11 +109,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         unscheduled or interrupted. False if the computation may possibly be
         executing or scheduled to execute later.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def result(self, timeout=None):
-    """Accesses the outcome of the computation or raises its exception.
+    @abc.abstractmethod
+    def result(self, timeout=None):
+        """Accesses the outcome of the computation or raises its exception.
 
     This method may return immediately or may block.
 
@@ -134,11 +132,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
       Exception: If the computation raised an exception, this call will raise
         the same exception.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def exception(self, timeout=None):
-    """Return the exception raised by the computation.
+    @abc.abstractmethod
+    def exception(self, timeout=None):
+        """Return the exception raised by the computation.
 
     This method may return immediately or may block.
 
@@ -157,11 +155,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         not terminate within the allotted time.
       FutureCancelledError: If the computation was cancelled.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def traceback(self, timeout=None):
-    """Access the traceback of the exception raised by the computation.
+    @abc.abstractmethod
+    def traceback(self, timeout=None):
+        """Access the traceback of the exception raised by the computation.
 
     This method may return immediately or may block.
 
@@ -180,11 +178,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         not terminate within the allotted time.
       FutureCancelledError: If the computation was cancelled.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def add_done_callback(self, fn):
-    """Adds a function to be called at completion of the computation.
+    @abc.abstractmethod
+    def add_done_callback(self, fn):
+        """Adds a function to be called at completion of the computation.
 
     The callback will be passed this Future object describing the outcome of
     the computation.
@@ -195,7 +193,7 @@ class Future(six.with_metaclass(abc.ABCMeta)):
     Args:
       fn: A callable taking this Future object as its single parameter.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 ################################  gRPC Enums  ##################################
@@ -203,7 +201,7 @@ class Future(six.with_metaclass(abc.ABCMeta)):
 
 @enum.unique
 class ChannelConnectivity(enum.Enum):
-  """Mirrors grpc_connectivity_state in the gRPC Core.
+    """Mirrors grpc_connectivity_state in the gRPC Core.
 
   Attributes:
     IDLE: The channel is idle.
@@ -213,81 +211,80 @@ class ChannelConnectivity(enum.Enum):
       recover.
     SHUTDOWN: The channel has seen a failure from which it cannot recover.
   """
-  IDLE              = (_cygrpc.ConnectivityState.idle, 'idle')
-  CONNECTING        = (_cygrpc.ConnectivityState.connecting, 'connecting')
-  READY             = (_cygrpc.ConnectivityState.ready, 'ready')
-  TRANSIENT_FAILURE = (
-      _cygrpc.ConnectivityState.transient_failure, 'transient failure')
-  SHUTDOWN          = (_cygrpc.ConnectivityState.shutdown, 'shutdown')
+    IDLE = (_cygrpc.ConnectivityState.idle, 'idle')
+    CONNECTING = (_cygrpc.ConnectivityState.connecting, 'connecting')
+    READY = (_cygrpc.ConnectivityState.ready, 'ready')
+    TRANSIENT_FAILURE = (_cygrpc.ConnectivityState.transient_failure,
+                         'transient failure')
+    SHUTDOWN = (_cygrpc.ConnectivityState.shutdown, 'shutdown')
 
 
 @enum.unique
 class StatusCode(enum.Enum):
-  """Mirrors grpc_status_code in the gRPC Core."""
-  OK                  = (_cygrpc.StatusCode.ok, 'ok')
-  CANCELLED           = (_cygrpc.StatusCode.cancelled, 'cancelled')
-  UNKNOWN             = (_cygrpc.StatusCode.unknown, 'unknown')
-  INVALID_ARGUMENT    = (
-      _cygrpc.StatusCode.invalid_argument, 'invalid argument')
-  DEADLINE_EXCEEDED   = (
-      _cygrpc.StatusCode.deadline_exceeded, 'deadline exceeded')
-  NOT_FOUND           = (_cygrpc.StatusCode.not_found, 'not found')
-  ALREADY_EXISTS      = (_cygrpc.StatusCode.already_exists, 'already exists')
-  PERMISSION_DENIED   = (
-      _cygrpc.StatusCode.permission_denied, 'permission denied')
-  RESOURCE_EXHAUSTED  = (
-      _cygrpc.StatusCode.resource_exhausted, 'resource exhausted')
-  FAILED_PRECONDITION = (
-      _cygrpc.StatusCode.failed_precondition, 'failed precondition')
-  ABORTED             = (_cygrpc.StatusCode.aborted, 'aborted')
-  OUT_OF_RANGE        = (_cygrpc.StatusCode.out_of_range, 'out of range')
-  UNIMPLEMENTED       = (_cygrpc.StatusCode.unimplemented, 'unimplemented')
-  INTERNAL            = (_cygrpc.StatusCode.internal, 'internal')
-  UNAVAILABLE         = (_cygrpc.StatusCode.unavailable, 'unavailable')
-  DATA_LOSS           = (_cygrpc.StatusCode.data_loss, 'data loss')
-  UNAUTHENTICATED     = (_cygrpc.StatusCode.unauthenticated, 'unauthenticated')
+    """Mirrors grpc_status_code in the gRPC Core."""
+    OK = (_cygrpc.StatusCode.ok, 'ok')
+    CANCELLED = (_cygrpc.StatusCode.cancelled, 'cancelled')
+    UNKNOWN = (_cygrpc.StatusCode.unknown, 'unknown')
+    INVALID_ARGUMENT = (_cygrpc.StatusCode.invalid_argument, 'invalid argument')
+    DEADLINE_EXCEEDED = (_cygrpc.StatusCode.deadline_exceeded,
+                         'deadline exceeded')
+    NOT_FOUND = (_cygrpc.StatusCode.not_found, 'not found')
+    ALREADY_EXISTS = (_cygrpc.StatusCode.already_exists, 'already exists')
+    PERMISSION_DENIED = (_cygrpc.StatusCode.permission_denied,
+                         'permission denied')
+    RESOURCE_EXHAUSTED = (_cygrpc.StatusCode.resource_exhausted,
+                          'resource exhausted')
+    FAILED_PRECONDITION = (_cygrpc.StatusCode.failed_precondition,
+                           'failed precondition')
+    ABORTED = (_cygrpc.StatusCode.aborted, 'aborted')
+    OUT_OF_RANGE = (_cygrpc.StatusCode.out_of_range, 'out of range')
+    UNIMPLEMENTED = (_cygrpc.StatusCode.unimplemented, 'unimplemented')
+    INTERNAL = (_cygrpc.StatusCode.internal, 'internal')
+    UNAVAILABLE = (_cygrpc.StatusCode.unavailable, 'unavailable')
+    DATA_LOSS = (_cygrpc.StatusCode.data_loss, 'data loss')
+    UNAUTHENTICATED = (_cygrpc.StatusCode.unauthenticated, 'unauthenticated')
 
 
 #############################  gRPC Exceptions  ################################
 
 
 class RpcError(Exception):
-  """Raised by the gRPC library to indicate non-OK-status RPC termination."""
+    """Raised by the gRPC library to indicate non-OK-status RPC termination."""
 
 
 ##############################  Shared Context  ################################
 
 
 class RpcContext(six.with_metaclass(abc.ABCMeta)):
-  """Provides RPC-related information and action."""
+    """Provides RPC-related information and action."""
 
-  @abc.abstractmethod
-  def is_active(self):
-    """Describes whether the RPC is active or has terminated."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def is_active(self):
+        """Describes whether the RPC is active or has terminated."""
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def time_remaining(self):
-    """Describes the length of allowed time remaining for the RPC.
+    @abc.abstractmethod
+    def time_remaining(self):
+        """Describes the length of allowed time remaining for the RPC.
 
     Returns:
       A nonnegative float indicating the length of allowed time in seconds
       remaining for the RPC to complete before it is considered to have timed
       out, or None if no deadline was specified for the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def cancel(self):
-    """Cancels the RPC.
+    @abc.abstractmethod
+    def cancel(self):
+        """Cancels the RPC.
 
     Idempotent and has no effect if the RPC has already terminated.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def add_callback(self, callback):
-    """Registers a callback to be called on RPC termination.
+    @abc.abstractmethod
+    def add_callback(self, callback):
+        """Registers a callback to be called on RPC termination.
 
     Args:
       callback: A no-parameter callable to be called on RPC termination.
@@ -297,76 +294,76 @@ class RpcContext(six.with_metaclass(abc.ABCMeta)):
         callback was not added and will not later be called (because the RPC
         already terminated or some other reason).
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 #########################  Invocation-Side Context  ############################
 
 
 class Call(six.with_metaclass(abc.ABCMeta, RpcContext)):
-  """Invocation-side utility object for an RPC."""
+    """Invocation-side utility object for an RPC."""
 
-  @abc.abstractmethod
-  def initial_metadata(self):
-    """Accesses the initial metadata from the service-side of the RPC.
+    @abc.abstractmethod
+    def initial_metadata(self):
+        """Accesses the initial metadata from the service-side of the RPC.
 
     This method blocks until the value is available.
 
     Returns:
       The initial :term:`metadata`.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def trailing_metadata(self):
-    """Accesses the trailing metadata from the service-side of the RPC.
+    @abc.abstractmethod
+    def trailing_metadata(self):
+        """Accesses the trailing metadata from the service-side of the RPC.
 
     This method blocks until the value is available.
 
     Returns:
       The trailing :term:`metadata`.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def code(self):
-    """Accesses the status code emitted by the service-side of the RPC.
+    @abc.abstractmethod
+    def code(self):
+        """Accesses the status code emitted by the service-side of the RPC.
 
     This method blocks until the value is available.
 
     Returns:
       The StatusCode value for the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def details(self):
-    """Accesses the details value emitted by the service-side of the RPC.
+    @abc.abstractmethod
+    def details(self):
+        """Accesses the details value emitted by the service-side of the RPC.
 
     This method blocks until the value is available.
 
     Returns:
       The details string of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 ############  Authentication & Authorization Interfaces & Classes  #############
 
 
 class ChannelCredentials(object):
-  """A value encapsulating the data required to create a secure Channel.
+    """A value encapsulating the data required to create a secure Channel.
 
   This class has no supported interface - it exists to define the type of its
   instances and its instances exist to be passed to other functions.
   """
 
-  def __init__(self, credentials):
-    self._credentials = credentials
+    def __init__(self, credentials):
+        self._credentials = credentials
 
 
 class CallCredentials(object):
-  """A value encapsulating data asserting an identity over a channel.
+    """A value encapsulating data asserting an identity over a channel.
 
   A CallCredentials may be composed with ChannelCredentials to always assert
   identity for every call over that Channel.
@@ -375,12 +372,12 @@ class CallCredentials(object):
   instances and its instances exist to be passed to other functions.
   """
 
-  def __init__(self, credentials):
-    self._credentials = credentials
+    def __init__(self, credentials):
+        self._credentials = credentials
 
 
 class AuthMetadataContext(six.with_metaclass(abc.ABCMeta)):
-  """Provides information to call credentials metadata plugins.
+    """Provides information to call credentials metadata plugins.
 
   Attributes:
     service_url: A string URL of the service being called into.
@@ -389,23 +386,23 @@ class AuthMetadataContext(six.with_metaclass(abc.ABCMeta)):
 
 
 class AuthMetadataPluginCallback(six.with_metaclass(abc.ABCMeta)):
-  """Callback object received by a metadata plugin."""
+    """Callback object received by a metadata plugin."""
 
-  def __call__(self, metadata, error):
-    """Inform the gRPC runtime of the metadata to construct a CallCredentials.
+    def __call__(self, metadata, error):
+        """Inform the gRPC runtime of the metadata to construct a CallCredentials.
 
     Args:
       metadata: The :term:`metadata` used to construct the CallCredentials.
       error: An Exception to indicate error or None to indicate success.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class AuthMetadataPlugin(six.with_metaclass(abc.ABCMeta)):
-  """A specification for custom authentication."""
+    """A specification for custom authentication."""
 
-  def __call__(self, context, callback):
-    """Implements authentication by passing metadata to a callback.
+    def __call__(self, context, callback):
+        """Implements authentication by passing metadata to a callback.
 
     Implementations of this method must not block.
 
@@ -415,29 +412,29 @@ class AuthMetadataPlugin(six.with_metaclass(abc.ABCMeta)):
       callback: An AuthMetadataPluginCallback to be invoked either synchronously
         or asynchronously.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class ServerCredentials(object):
-  """A value encapsulating the data required to open a secure port on a Server.
+    """A value encapsulating the data required to open a secure port on a Server.
 
   This class has no supported interface - it exists to define the type of its
   instances and its instances exist to be passed to other functions.
   """
 
-  def __init__(self, credentials):
-    self._credentials = credentials
+    def __init__(self, credentials):
+        self._credentials = credentials
 
 
 ########################  Multi-Callable Interfaces  ###########################
 
 
 class UnaryUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
-  """Affords invoking a unary-unary RPC."""
+    """Affords invoking a unary-unary RPC."""
 
-  @abc.abstractmethod
-  def __call__(self, request, timeout=None, metadata=None, credentials=None):
-    """Synchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def __call__(self, request, timeout=None, metadata=None, credentials=None):
+        """Synchronously invokes the underlying RPC.
 
     Args:
       request: The request value for the RPC.
@@ -454,11 +451,11 @@ class UnaryUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
         raised RpcError will also be a Call for the RPC affording the RPC's
         metadata, status code, and details.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def with_call(self, request, timeout=None, metadata=None, credentials=None):
-    """Synchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def with_call(self, request, timeout=None, metadata=None, credentials=None):
+        """Synchronously invokes the underlying RPC.
 
     Args:
       request: The request value for the RPC.
@@ -475,11 +472,11 @@ class UnaryUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
         raised RpcError will also be a Call for the RPC affording the RPC's
         metadata, status code, and details.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def future(self, request, timeout=None, metadata=None, credentials=None):
-    """Asynchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def future(self, request, timeout=None, metadata=None, credentials=None):
+        """Asynchronously invokes the underlying RPC.
 
     Args:
       request: The request value for the RPC.
@@ -494,15 +491,15 @@ class UnaryUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
         message of the RPC. Should the event terminate with non-OK status, the
         returned Future's exception value will be an RpcError.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class UnaryStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
-  """Affords invoking a unary-stream RPC."""
+    """Affords invoking a unary-stream RPC."""
 
-  @abc.abstractmethod
-  def __call__(self, request, timeout=None, metadata=None, credentials=None):
-    """Invokes the underlying RPC.
+    @abc.abstractmethod
+    def __call__(self, request, timeout=None, metadata=None, credentials=None):
+        """Invokes the underlying RPC.
 
     Args:
       request: The request value for the RPC.
@@ -516,16 +513,19 @@ class UnaryStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
         values. Drawing response values from the returned iterator may raise
         RpcError indicating termination of the RPC with non-OK status.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class StreamUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
-  """Affords invoking a stream-unary RPC in any call style."""
+    """Affords invoking a stream-unary RPC in any call style."""
 
-  @abc.abstractmethod
-  def __call__(
-      self, request_iterator, timeout=None, metadata=None, credentials=None):
-    """Synchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def __call__(self,
+                 request_iterator,
+                 timeout=None,
+                 metadata=None,
+                 credentials=None):
+        """Synchronously invokes the underlying RPC.
 
     Args:
       request_iterator: An iterator that yields request values for the RPC.
@@ -543,12 +543,15 @@ class StreamUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
         raised RpcError will also be a Call for the RPC affording the RPC's
         metadata, status code, and details.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def with_call(
-      self, request_iterator, timeout=None, metadata=None, credentials=None):
-    """Synchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def with_call(self,
+                  request_iterator,
+                  timeout=None,
+                  metadata=None,
+                  credentials=None):
+        """Synchronously invokes the underlying RPC.
 
     Args:
       request_iterator: An iterator that yields request values for the RPC.
@@ -565,12 +568,15 @@ class StreamUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
         raised RpcError will also be a Call for the RPC affording the RPC's
         metadata, status code, and details.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def future(
-      self, request_iterator, timeout=None, metadata=None, credentials=None):
-    """Asynchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def future(self,
+               request_iterator,
+               timeout=None,
+               metadata=None,
+               credentials=None):
+        """Asynchronously invokes the underlying RPC.
 
     Args:
       request_iterator: An iterator that yields request values for the RPC.
@@ -585,16 +591,19 @@ class StreamUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
         message of the RPC. Should the event terminate with non-OK status, the
         returned Future's exception value will be an RpcError.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class StreamStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
-  """Affords invoking a stream-stream RPC in any call style."""
+    """Affords invoking a stream-stream RPC in any call style."""
 
-  @abc.abstractmethod
-  def __call__(
-      self, request_iterator, timeout=None, metadata=None, credentials=None):
-    """Invokes the underlying RPC.
+    @abc.abstractmethod
+    def __call__(self,
+                 request_iterator,
+                 timeout=None,
+                 metadata=None,
+                 credentials=None):
+        """Invokes the underlying RPC.
 
     Args:
       request_iterator: An iterator that yields request values for the RPC.
@@ -608,18 +617,18 @@ class StreamStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
         values. Drawing response values from the returned iterator may raise
         RpcError indicating termination of the RPC with non-OK status.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 #############################  Channel Interface  ##############################
 
 
 class Channel(six.with_metaclass(abc.ABCMeta)):
-  """Affords RPC invocation via generic methods."""
+    """Affords RPC invocation via generic methods."""
 
-  @abc.abstractmethod
-  def subscribe(self, callback, try_to_connect=False):
-    """Subscribes to this Channel's connectivity.
+    @abc.abstractmethod
+    def subscribe(self, callback, try_to_connect=False):
+        """Subscribes to this Channel's connectivity.
 
     Args:
       callback: A callable to be invoked and passed a ChannelConnectivity value
@@ -631,22 +640,24 @@ class Channel(six.with_metaclass(abc.ABCMeta)):
         attempt to connect if it is not already connected and ready to conduct
         RPCs.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def unsubscribe(self, callback):
-    """Unsubscribes a callback from this Channel's connectivity.
+    @abc.abstractmethod
+    def unsubscribe(self, callback):
+        """Unsubscribes a callback from this Channel's connectivity.
 
     Args:
       callback: A callable previously registered with this Channel from having
         been passed to its "subscribe" method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def unary_unary(
-      self, method, request_serializer=None, response_deserializer=None):
-    """Creates a UnaryUnaryMultiCallable for a unary-unary method.
+    @abc.abstractmethod
+    def unary_unary(self,
+                    method,
+                    request_serializer=None,
+                    response_deserializer=None):
+        """Creates a UnaryUnaryMultiCallable for a unary-unary method.
 
     Args:
       method: The name of the RPC method.
@@ -658,12 +669,14 @@ class Channel(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A UnaryUnaryMultiCallable value for the named unary-unary method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def unary_stream(
-      self, method, request_serializer=None, response_deserializer=None):
-    """Creates a UnaryStreamMultiCallable for a unary-stream method.
+    @abc.abstractmethod
+    def unary_stream(self,
+                     method,
+                     request_serializer=None,
+                     response_deserializer=None):
+        """Creates a UnaryStreamMultiCallable for a unary-stream method.
 
     Args:
       method: The name of the RPC method.
@@ -675,12 +688,14 @@ class Channel(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A UnaryStreamMultiCallable value for the name unary-stream method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stream_unary(
-      self, method, request_serializer=None, response_deserializer=None):
-    """Creates a StreamUnaryMultiCallable for a stream-unary method.
+    @abc.abstractmethod
+    def stream_unary(self,
+                     method,
+                     request_serializer=None,
+                     response_deserializer=None):
+        """Creates a StreamUnaryMultiCallable for a stream-unary method.
 
     Args:
       method: The name of the RPC method.
@@ -692,12 +707,14 @@ class Channel(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A StreamUnaryMultiCallable value for the named stream-unary method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stream_stream(
-      self, method, request_serializer=None, response_deserializer=None):
-    """Creates a StreamStreamMultiCallable for a stream-stream method.
+    @abc.abstractmethod
+    def stream_stream(self,
+                      method,
+                      request_serializer=None,
+                      response_deserializer=None):
+        """Creates a StreamStreamMultiCallable for a stream-stream method.
 
     Args:
       method: The name of the RPC method.
@@ -709,36 +726,36 @@ class Channel(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A StreamStreamMultiCallable value for the named stream-stream method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 ##########################  Service-Side Context  ##############################
 
 
 class ServicerContext(six.with_metaclass(abc.ABCMeta, RpcContext)):
-  """A context object passed to method implementations."""
+    """A context object passed to method implementations."""
 
-  @abc.abstractmethod
-  def invocation_metadata(self):
-    """Accesses the metadata from the invocation-side of the RPC.
+    @abc.abstractmethod
+    def invocation_metadata(self):
+        """Accesses the metadata from the invocation-side of the RPC.
 
     Returns:
       The invocation :term:`metadata`.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def peer(self):
-    """Identifies the peer that invoked the RPC being serviced.
+    @abc.abstractmethod
+    def peer(self):
+        """Identifies the peer that invoked the RPC being serviced.
 
     Returns:
       A string identifying the peer that invoked the RPC being serviced.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def send_initial_metadata(self, initial_metadata):
-    """Sends the initial metadata value to the invocation-side of the RPC.
+    @abc.abstractmethod
+    def send_initial_metadata(self, initial_metadata):
+        """Sends the initial metadata value to the invocation-side of the RPC.
 
     This method need not be called by method implementations if they have no
     service-side initial metadata to transmit.
@@ -746,11 +763,11 @@ class ServicerContext(six.with_metaclass(abc.ABCMeta, RpcContext)):
     Args:
       initial_metadata: The initial :term:`metadata`.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def set_trailing_metadata(self, trailing_metadata):
-    """Accepts the trailing metadata value of the RPC.
+    @abc.abstractmethod
+    def set_trailing_metadata(self, trailing_metadata):
+        """Accepts the trailing metadata value of the RPC.
 
     This method need not be called by method implementations if they have no
     service-side trailing metadata to transmit.
@@ -758,40 +775,40 @@ class ServicerContext(six.with_metaclass(abc.ABCMeta, RpcContext)):
     Args:
       trailing_metadata: The trailing :term:`metadata`.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def set_code(self, code):
-    """Accepts the status code of the RPC.
+    @abc.abstractmethod
+    def set_code(self, code):
+        """Accepts the status code of the RPC.
 
     This method need not be called by method implementations if they wish the
     gRPC runtime to determine the status code of the RPC.
 
     Args:
-      code: The integer status code of the RPC to be transmitted to the
-        invocation side of the RPC.
+      code: A StatusCode value to be transmitted to the invocation side of the
+        RPC as the status code of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def set_details(self, details):
-    """Accepts the service-side details of the RPC.
+    @abc.abstractmethod
+    def set_details(self, details):
+        """Accepts the service-side details of the RPC.
 
     This method need not be called by method implementations if they have no
     details to transmit.
 
     Args:
-      details: The details string of the RPC to be transmitted to
-        the invocation side of the RPC.
+      details: A string to be transmitted to the invocation side of the RPC as
+        the status details of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 #####################  Service-Side Handler Interfaces  ########################
 
 
 class RpcMethodHandler(six.with_metaclass(abc.ABCMeta)):
-  """An implementation of a single RPC method.
+    """An implementation of a single RPC method.
 
   Attributes:
     request_streaming: Whether the RPC supports exactly one request message or
@@ -826,7 +843,7 @@ class RpcMethodHandler(six.with_metaclass(abc.ABCMeta)):
 
 
 class HandlerCallDetails(six.with_metaclass(abc.ABCMeta)):
-  """Describes an RPC that has just arrived for service.
+    """Describes an RPC that has just arrived for service.
   Attributes:
     method: The method name of the RPC.
     invocation_metadata: The :term:`metadata` from the invocation side of the RPC.
@@ -834,11 +851,11 @@ class HandlerCallDetails(six.with_metaclass(abc.ABCMeta)):
 
 
 class GenericRpcHandler(six.with_metaclass(abc.ABCMeta)):
-  """An implementation of arbitrarily many RPC methods."""
+    """An implementation of arbitrarily many RPC methods."""
 
-  @abc.abstractmethod
-  def service(self, handler_call_details):
-    """Services an RPC (or not).
+    @abc.abstractmethod
+    def service(self, handler_call_details):
+        """Services an RPC (or not).
 
     Args:
       handler_call_details: A HandlerCallDetails describing the RPC.
@@ -847,11 +864,11 @@ class GenericRpcHandler(six.with_metaclass(abc.ABCMeta)):
       An RpcMethodHandler with which the RPC may be serviced, or None to
         indicate that this object will not be servicing the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class ServiceRpcHandler(six.with_metaclass(abc.ABCMeta, GenericRpcHandler)):
-  """An implementation of RPC methods belonging to a service.
+    """An implementation of RPC methods belonging to a service.
 
   A service handles RPC methods with structured names of the form
   '/Service.Name/Service.MethodX', where 'Service.Name' is the value
@@ -860,25 +877,25 @@ class ServiceRpcHandler(six.with_metaclass(abc.ABCMeta, GenericRpcHandler)):
   service name.
   """
 
-  @abc.abstractmethod
-  def service_name(self):
-    """Returns this services name.
+    @abc.abstractmethod
+    def service_name(self):
+        """Returns this services name.
 
     Returns:
       The service name.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 #############################  Server Interface  ###############################
 
 
 class Server(six.with_metaclass(abc.ABCMeta)):
-  """Services RPCs."""
+    """Services RPCs."""
 
-  @abc.abstractmethod
-  def add_generic_rpc_handlers(self, generic_rpc_handlers):
-    """Registers GenericRpcHandlers with this Server.
+    @abc.abstractmethod
+    def add_generic_rpc_handlers(self, generic_rpc_handlers):
+        """Registers GenericRpcHandlers with this Server.
 
     This method is only safe to call before the server is started.
 
@@ -886,11 +903,11 @@ class Server(six.with_metaclass(abc.ABCMeta)):
       generic_rpc_handlers: An iterable of GenericRpcHandlers that will be used
         to service RPCs after this Server is started.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def add_insecure_port(self, address):
-    """Reserves a port for insecure RPC service once this Server becomes active.
+    @abc.abstractmethod
+    def add_insecure_port(self, address):
+        """Reserves a port for insecure RPC service once this Server becomes active.
 
     This method may only be called before calling this Server's start method is
     called.
@@ -904,11 +921,11 @@ class Server(six.with_metaclass(abc.ABCMeta)):
         in the passed address, but will likely be different if the port number
         contained in the passed address was zero.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def add_secure_port(self, address, server_credentials):
-    """Reserves a port for secure RPC service after this Server becomes active.
+    @abc.abstractmethod
+    def add_secure_port(self, address, server_credentials):
+        """Reserves a port for secure RPC service after this Server becomes active.
 
     This method may only be called before calling this Server's start method is
     called.
@@ -923,20 +940,20 @@ class Server(six.with_metaclass(abc.ABCMeta)):
         in the passed address, but will likely be different if the port number
         contained in the passed address was zero.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def start(self):
-    """Starts this Server's service of RPCs.
+    @abc.abstractmethod
+    def start(self):
+        """Starts this Server's service of RPCs.
 
     This method may only be called while the server is not serving RPCs (i.e. it
     is not idempotent).
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stop(self, grace):
-    """Stops this Server's service of RPCs.
+    @abc.abstractmethod
+    def stop(self, grace):
+        """Stops this Server's service of RPCs.
 
     All calls to this method immediately stop service of new RPCs. When existing
     RPCs are aborted is controlled by the grace period parameter passed to this
@@ -967,15 +984,16 @@ class Server(six.with_metaclass(abc.ABCMeta)):
       at the time it was stopped or if all RPCs that it had underway completed
       very early in the grace period).
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 #################################  Functions    ################################
 
 
-def unary_unary_rpc_method_handler(
-    behavior, request_deserializer=None, response_serializer=None):
-  """Creates an RpcMethodHandler for a unary-unary RPC method.
+def unary_unary_rpc_method_handler(behavior,
+                                   request_deserializer=None,
+                                   response_serializer=None):
+    """Creates an RpcMethodHandler for a unary-unary RPC method.
 
   Args:
     behavior: The implementation of an RPC method as a callable behavior taking
@@ -987,15 +1005,16 @@ def unary_unary_rpc_method_handler(
     An RpcMethodHandler for a unary-unary RPC method constructed from the given
       parameters.
   """
-  from grpc import _utilities
-  return _utilities.RpcMethodHandler(
-      False, False, request_deserializer, response_serializer, behavior, None,
-      None, None)
+    from grpc import _utilities
+    return _utilities.RpcMethodHandler(False, False, request_deserializer,
+                                       response_serializer, behavior, None,
+                                       None, None)
 
 
-def unary_stream_rpc_method_handler(
-    behavior, request_deserializer=None, response_serializer=None):
-  """Creates an RpcMethodHandler for a unary-stream RPC method.
+def unary_stream_rpc_method_handler(behavior,
+                                    request_deserializer=None,
+                                    response_serializer=None):
+    """Creates an RpcMethodHandler for a unary-stream RPC method.
 
   Args:
     behavior: The implementation of an RPC method as a callable behavior taking
@@ -1007,15 +1026,16 @@ def unary_stream_rpc_method_handler(
     An RpcMethodHandler for a unary-stream RPC method constructed from the
       given parameters.
   """
-  from grpc import _utilities
-  return _utilities.RpcMethodHandler(
-      False, True, request_deserializer, response_serializer, None, behavior,
-      None, None)
+    from grpc import _utilities
+    return _utilities.RpcMethodHandler(False, True, request_deserializer,
+                                       response_serializer, None, behavior,
+                                       None, None)
 
 
-def stream_unary_rpc_method_handler(
-    behavior, request_deserializer=None, response_serializer=None):
-  """Creates an RpcMethodHandler for a stream-unary RPC method.
+def stream_unary_rpc_method_handler(behavior,
+                                    request_deserializer=None,
+                                    response_serializer=None):
+    """Creates an RpcMethodHandler for a stream-unary RPC method.
 
   Args:
     behavior: The implementation of an RPC method as a callable behavior taking
@@ -1027,15 +1047,16 @@ def stream_unary_rpc_method_handler(
     An RpcMethodHandler for a stream-unary RPC method constructed from the
       given parameters.
   """
-  from grpc import _utilities
-  return _utilities.RpcMethodHandler(
-      True, False, request_deserializer, response_serializer, None, None,
-      behavior, None)
+    from grpc import _utilities
+    return _utilities.RpcMethodHandler(True, False, request_deserializer,
+                                       response_serializer, None, None,
+                                       behavior, None)
 
 
-def stream_stream_rpc_method_handler(
-        behavior, request_deserializer=None, response_serializer=None):
-  """Creates an RpcMethodHandler for a stream-stream RPC method.
+def stream_stream_rpc_method_handler(behavior,
+                                     request_deserializer=None,
+                                     response_serializer=None):
+    """Creates an RpcMethodHandler for a stream-stream RPC method.
 
   Args:
     behavior: The implementation of an RPC method as a callable behavior taking
@@ -1048,14 +1069,14 @@ def stream_stream_rpc_method_handler(
     An RpcMethodHandler for a stream-stream RPC method constructed from the
       given parameters.
   """
-  from grpc import _utilities
-  return _utilities.RpcMethodHandler(
-      True, True, request_deserializer, response_serializer, None, None, None,
-      behavior)
+    from grpc import _utilities
+    return _utilities.RpcMethodHandler(True, True, request_deserializer,
+                                       response_serializer, None, None, None,
+                                       behavior)
 
 
 def method_handlers_generic_handler(service, method_handlers):
-  """Creates a grpc.GenericRpcHandler from RpcMethodHandlers.
+    """Creates a grpc.GenericRpcHandler from RpcMethodHandlers.
 
   Args:
     service: A service name to be used for the given method handlers.
@@ -1065,13 +1086,14 @@ def method_handlers_generic_handler(service, method_handlers):
   Returns:
     A GenericRpcHandler constructed from the given parameters.
   """
-  from grpc import _utilities
-  return _utilities.DictionaryGenericHandler(service, method_handlers)
+    from grpc import _utilities
+    return _utilities.DictionaryGenericHandler(service, method_handlers)
 
 
-def ssl_channel_credentials(
-    root_certificates=None, private_key=None, certificate_chain=None):
-  """Creates a ChannelCredentials for use with an SSL-enabled Channel.
+def ssl_channel_credentials(root_certificates=None,
+                            private_key=None,
+                            certificate_chain=None):
+    """Creates a ChannelCredentials for use with an SSL-enabled Channel.
 
   Args:
     root_certificates: The PEM-encoded root certificates or unset to ask for
@@ -1084,16 +1106,16 @@ def ssl_channel_credentials(
   Returns:
     A ChannelCredentials for use with an SSL-enabled Channel.
   """
-  if private_key is not None or certificate_chain is not None:
-    pair = _cygrpc.SslPemKeyCertPair(private_key, certificate_chain)
-  else:
-    pair = None
-  return ChannelCredentials(
-      _cygrpc.channel_credentials_ssl(root_certificates, pair))
+    if private_key is not None or certificate_chain is not None:
+        pair = _cygrpc.SslPemKeyCertPair(private_key, certificate_chain)
+    else:
+        pair = None
+    return ChannelCredentials(
+        _cygrpc.channel_credentials_ssl(root_certificates, pair))
 
 
 def metadata_call_credentials(metadata_plugin, name=None):
-  """Construct CallCredentials from an AuthMetadataPlugin.
+    """Construct CallCredentials from an AuthMetadataPlugin.
 
   Args:
     metadata_plugin: An AuthMetadataPlugin to use as the authentication behavior
@@ -1103,21 +1125,21 @@ def metadata_call_credentials(metadata_plugin, name=None):
   Returns:
     A CallCredentials.
   """
-  from grpc import _plugin_wrapping
-  if name is None:
-    try:
-      effective_name = metadata_plugin.__name__
-    except AttributeError:
-      effective_name = metadata_plugin.__class__.__name__
-  else:
-    effective_name = name
-  return CallCredentials(
-      _plugin_wrapping.call_credentials_metadata_plugin(
-          metadata_plugin, effective_name))
+    from grpc import _plugin_wrapping
+    if name is None:
+        try:
+            effective_name = metadata_plugin.__name__
+        except AttributeError:
+            effective_name = metadata_plugin.__class__.__name__
+    else:
+        effective_name = name
+    return CallCredentials(
+        _plugin_wrapping.call_credentials_metadata_plugin(metadata_plugin,
+                                                          effective_name))
 
 
 def access_token_call_credentials(access_token):
-  """Construct CallCredentials from an access token.
+    """Construct CallCredentials from an access token.
 
   Args:
     access_token: A string to place directly in the http request
@@ -1126,13 +1148,13 @@ def access_token_call_credentials(access_token):
   Returns:
     A CallCredentials.
   """
-  from grpc import _auth
-  return metadata_call_credentials(
-      _auth.AccessTokenCallCredentials(access_token))
+    from grpc import _auth
+    return metadata_call_credentials(
+        _auth.AccessTokenCallCredentials(access_token))
 
 
 def composite_call_credentials(*call_credentials):
-  """Compose multiple CallCredentials to make a new CallCredentials.
+    """Compose multiple CallCredentials to make a new CallCredentials.
 
   Args:
     *call_credentials: At least two CallCredentials objects.
@@ -1140,16 +1162,16 @@ def composite_call_credentials(*call_credentials):
   Returns:
     A CallCredentials object composed of the given CallCredentials objects.
   """
-  from grpc import _credential_composition
-  cygrpc_call_credentials = tuple(
-      single_call_credentials._credentials
-      for single_call_credentials in call_credentials)
-  return CallCredentials(
-      _credential_composition.call(cygrpc_call_credentials))
+    from grpc import _credential_composition
+    cygrpc_call_credentials = tuple(
+        single_call_credentials._credentials
+        for single_call_credentials in call_credentials)
+    return CallCredentials(
+        _credential_composition.call(cygrpc_call_credentials))
 
 
 def composite_channel_credentials(channel_credentials, *call_credentials):
-  """Compose a ChannelCredentials and one or more CallCredentials objects.
+    """Compose a ChannelCredentials and one or more CallCredentials objects.
 
   Args:
     channel_credentials: A ChannelCredentials.
@@ -1159,19 +1181,19 @@ def composite_channel_credentials(channel_credentials, *call_credentials):
     A ChannelCredentials composed of the given ChannelCredentials and
       CallCredentials objects.
   """
-  from grpc import _credential_composition
-  cygrpc_call_credentials = tuple(
-      single_call_credentials._credentials
-      for single_call_credentials in call_credentials)
-  return ChannelCredentials(
-      _credential_composition.channel(
-          channel_credentials._credentials, cygrpc_call_credentials))
+    from grpc import _credential_composition
+    cygrpc_call_credentials = tuple(
+        single_call_credentials._credentials
+        for single_call_credentials in call_credentials)
+    return ChannelCredentials(
+        _credential_composition.channel(channel_credentials._credentials,
+                                        cygrpc_call_credentials))
 
 
-def ssl_server_credentials(
-    private_key_certificate_chain_pairs, root_certificates=None,
-    require_client_auth=False):
-  """Creates a ServerCredentials for use with an SSL-enabled Server.
+def ssl_server_credentials(private_key_certificate_chain_pairs,
+                           root_certificates=None,
+                           require_client_auth=False):
+    """Creates a ServerCredentials for use with an SSL-enabled Server.
 
   Args:
     private_key_certificate_chain_pairs: A nonempty sequence each element of
@@ -1187,23 +1209,23 @@ def ssl_server_credentials(
   Returns:
     A ServerCredentials for use with an SSL-enabled Server.
   """
-  if len(private_key_certificate_chain_pairs) == 0:
-    raise ValueError(
-        'At least one private key-certificate chain pair is required!')
-  elif require_client_auth and root_certificates is None:
-    raise ValueError(
-        'Illegal to require client auth without providing root certificates!')
-  else:
-    return ServerCredentials(
-        _cygrpc.server_credentials_ssl(
-        root_certificates,
-        [_cygrpc.SslPemKeyCertPair(key, pem)
-         for key, pem in private_key_certificate_chain_pairs],
-        require_client_auth))
+    if len(private_key_certificate_chain_pairs) == 0:
+        raise ValueError(
+            'At least one private key-certificate chain pair is required!')
+    elif require_client_auth and root_certificates is None:
+        raise ValueError(
+            'Illegal to require client auth without providing root certificates!'
+        )
+    else:
+        return ServerCredentials(
+            _cygrpc.server_credentials_ssl(root_certificates, [
+                _cygrpc.SslPemKeyCertPair(key, pem)
+                for key, pem in private_key_certificate_chain_pairs
+            ], require_client_auth))
 
 
 def channel_ready_future(channel):
-  """Creates a Future tracking when a Channel is ready.
+    """Creates a Future tracking when a Channel is ready.
 
   Cancelling the returned Future does not tell the given Channel to abandon
   attempts it may have been making to connect; cancelling merely deactivates the
@@ -1216,12 +1238,12 @@ def channel_ready_future(channel):
     A Future that matures when the given Channel has connectivity
       ChannelConnectivity.READY.
   """
-  from grpc import _utilities
-  return _utilities.channel_ready_future(channel)
+    from grpc import _utilities
+    return _utilities.channel_ready_future(channel)
 
 
 def insecure_channel(target, options=None):
-  """Creates an insecure Channel to a server.
+    """Creates an insecure Channel to a server.
 
   Args:
     target: The target to which to connect.
@@ -1231,12 +1253,12 @@ def insecure_channel(target, options=None):
   Returns:
     A Channel to the target through which RPCs may be conducted.
   """
-  from grpc import _channel
-  return _channel.Channel(target, () if options is None else options, None)
+    from grpc import _channel
+    return _channel.Channel(target, () if options is None else options, None)
 
 
 def secure_channel(target, credentials, options=None):
-  """Creates a secure Channel to a server.
+    """Creates a secure Channel to a server.
 
   Args:
     target: The target to which to connect.
@@ -1247,13 +1269,13 @@ def secure_channel(target, credentials, options=None):
   Returns:
     A Channel to the target through which RPCs may be conducted.
   """
-  from grpc import _channel
-  return _channel.Channel(target, () if options is None else options,
-                          credentials._credentials)
+    from grpc import _channel
+    return _channel.Channel(target, () if options is None else options,
+                            credentials._credentials)
 
 
 def server(thread_pool, handlers=None, options=None):
-  """Creates a Server with which RPCs can be serviced.
+    """Creates a Server with which RPCs can be serviced.
 
   Args:
     thread_pool: A futures.ThreadPoolExecutor to be used by the returned Server
@@ -1269,14 +1291,13 @@ def server(thread_pool, handlers=None, options=None):
   Returns:
     A Server with which RPCs can be serviced.
   """
-  from grpc import _server
-  return _server.Server(thread_pool, () if handlers is None else handlers,
-                        () if options is None else options)
+    from grpc import _server
+    return _server.Server(thread_pool, () if handlers is None else handlers, ()
+                          if options is None else options)
 
 
 ###################################  __all__  #################################
 
-
 __all__ = (
     'FutureTimeoutError',
     'FutureCancelledError',
@@ -1317,26 +1338,23 @@ __all__ = (
     'channel_ready_future',
     'insecure_channel',
     'secure_channel',
-    'server',
-)
-
+    'server',)
 
 ############################### Extension Shims ################################
 
-
 # Here to maintain backwards compatibility; avoid using these in new code!
 try:
-  import grpc_tools
-  sys.modules.update({'grpc.tools': grpc_tools})
+    import grpc_tools
+    sys.modules.update({'grpc.tools': grpc_tools})
 except ImportError:
-  pass
+    pass
 try:
-  import grpc_health
-  sys.modules.update({'grpc.health': grpc_health})
+    import grpc_health
+    sys.modules.update({'grpc.health': grpc_health})
 except ImportError:
-  pass
+    pass
 try:
-  import grpc_reflection
-  sys.modules.update({'grpc.reflection': grpc_reflection})
+    import grpc_reflection
+    sys.modules.update({'grpc.reflection': grpc_reflection})
 except ImportError:
-  pass
+    pass
diff --git a/src/python/grpcio/grpc/_auth.py b/src/python/grpcio/grpc/_auth.py
index dea3221c9d89720893a57c0d25ef02c5b144342d..e8a90cf5047e6bb21d97aeac42a0ad2156743442 100644
--- a/src/python/grpcio/grpc/_auth.py
+++ b/src/python/grpcio/grpc/_auth.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """GRPCAuthMetadataPlugins for standard authentication."""
 
 import inspect
@@ -36,51 +35,53 @@ import grpc
 
 
 def _sign_request(callback, token, error):
-  metadata = (('authorization', 'Bearer {}'.format(token)),)
-  callback(metadata, error)
+    metadata = (('authorization', 'Bearer {}'.format(token)),)
+    callback(metadata, error)
 
 
 class GoogleCallCredentials(grpc.AuthMetadataPlugin):
-  """Metadata wrapper for GoogleCredentials from the oauth2client library."""
-
-  def __init__(self, credentials):
-    self._credentials = credentials
-    self._pool = futures.ThreadPoolExecutor(max_workers=1)
-
-    # Hack to determine if these are JWT creds and we need to pass
-    # additional_claims when getting a token
-    if 'additional_claims' in inspect.getargspec(
-        credentials.get_access_token).args:
-      self._is_jwt = True
-    else:
-      self._is_jwt = False
-
-  def __call__(self, context, callback):
-    # MetadataPlugins cannot block (see grpc.beta.interfaces.py)
-    if self._is_jwt:
-      future = self._pool.submit(self._credentials.get_access_token,
-                                 additional_claims={'aud': context.service_url})
-    else:
-      future = self._pool.submit(self._credentials.get_access_token)
-    future.add_done_callback(lambda x: self._get_token_callback(callback, x))
-
-  def _get_token_callback(self, callback, future):
-    try:
-      access_token = future.result().access_token
-    except Exception as e:
-      _sign_request(callback, None, e)
-    else:
-      _sign_request(callback, access_token, None)
-
-  def __del__(self):
-    self._pool.shutdown(wait=False)
+    """Metadata wrapper for GoogleCredentials from the oauth2client library."""
+
+    def __init__(self, credentials):
+        self._credentials = credentials
+        self._pool = futures.ThreadPoolExecutor(max_workers=1)
+
+        # Hack to determine if these are JWT creds and we need to pass
+        # additional_claims when getting a token
+        if 'additional_claims' in inspect.getargspec(
+                credentials.get_access_token).args:
+            self._is_jwt = True
+        else:
+            self._is_jwt = False
+
+    def __call__(self, context, callback):
+        # MetadataPlugins cannot block (see grpc.beta.interfaces.py)
+        if self._is_jwt:
+            future = self._pool.submit(
+                self._credentials.get_access_token,
+                additional_claims={'aud': context.service_url})
+        else:
+            future = self._pool.submit(self._credentials.get_access_token)
+        future.add_done_callback(
+            lambda x: self._get_token_callback(callback, x))
+
+    def _get_token_callback(self, callback, future):
+        try:
+            access_token = future.result().access_token
+        except Exception as e:
+            _sign_request(callback, None, e)
+        else:
+            _sign_request(callback, access_token, None)
+
+    def __del__(self):
+        self._pool.shutdown(wait=False)
 
 
 class AccessTokenCallCredentials(grpc.AuthMetadataPlugin):
-  """Metadata wrapper for raw access token credentials."""
+    """Metadata wrapper for raw access token credentials."""
 
-  def __init__(self, access_token):
-    self._access_token = access_token
+    def __init__(self, access_token):
+        self._access_token = access_token
 
-  def __call__(self, context, callback):
-    _sign_request(callback, self._access_token, None)
+    def __call__(self, context, callback):
+        _sign_request(callback, self._access_token, None)
diff --git a/src/python/grpcio/grpc/_channel.py b/src/python/grpcio/grpc/_channel.py
index 53a26727abed3f7c43612cc5fc097e08fea9ff2b..77412236cc61bd294fb895fb14f1077966a53b9e 100644
--- a/src/python/grpcio/grpc/_channel.py
+++ b/src/python/grpcio/grpc/_channel.py
@@ -26,18 +26,18 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Invocation-side implementation of gRPC Python."""
 
 import sys
 import threading
 import time
+import logging
 
 import grpc
 from grpc import _common
 from grpc import _grpcio_metadata
-from grpc.framework.foundation import callable_util
 from grpc._cython import cygrpc
+from grpc.framework.foundation import callable_util
 
 _USER_AGENT = 'Python-gRPC-{}'.format(_grpcio_metadata.__version__)
 
@@ -51,652 +51,714 @@ _UNARY_UNARY_INITIAL_DUE = (
     cygrpc.OperationType.send_close_from_client,
     cygrpc.OperationType.receive_initial_metadata,
     cygrpc.OperationType.receive_message,
-    cygrpc.OperationType.receive_status_on_client,
-)
+    cygrpc.OperationType.receive_status_on_client,)
 _UNARY_STREAM_INITIAL_DUE = (
     cygrpc.OperationType.send_initial_metadata,
     cygrpc.OperationType.send_message,
     cygrpc.OperationType.send_close_from_client,
     cygrpc.OperationType.receive_initial_metadata,
-    cygrpc.OperationType.receive_status_on_client,
-)
+    cygrpc.OperationType.receive_status_on_client,)
 _STREAM_UNARY_INITIAL_DUE = (
     cygrpc.OperationType.send_initial_metadata,
     cygrpc.OperationType.receive_initial_metadata,
     cygrpc.OperationType.receive_message,
-    cygrpc.OperationType.receive_status_on_client,
-)
+    cygrpc.OperationType.receive_status_on_client,)
 _STREAM_STREAM_INITIAL_DUE = (
     cygrpc.OperationType.send_initial_metadata,
     cygrpc.OperationType.receive_initial_metadata,
-    cygrpc.OperationType.receive_status_on_client,
-)
+    cygrpc.OperationType.receive_status_on_client,)
 
 _CHANNEL_SUBSCRIPTION_CALLBACK_ERROR_LOG_MESSAGE = (
     'Exception calling channel subscription callback!')
 
 
 def _deadline(timeout):
-  if timeout is None:
-    return None, _INFINITE_FUTURE
-  else:
-    deadline = time.time() + timeout
-    return deadline, cygrpc.Timespec(deadline)
+    if timeout is None:
+        return None, _INFINITE_FUTURE
+    else:
+        deadline = time.time() + timeout
+        return deadline, cygrpc.Timespec(deadline)
 
 
 def _unknown_code_details(unknown_cygrpc_code, details):
-  return 'Server sent unknown code {} and details "{}"'.format(
-      unknown_cygrpc_code, details)
+    return 'Server sent unknown code {} and details "{}"'.format(
+        unknown_cygrpc_code, details)
 
 
 def _wait_once_until(condition, until):
-  if until is None:
-    condition.wait()
-  else:
-    remaining = until - time.time()
-    if remaining < 0:
-      raise grpc.FutureTimeoutError()
+    if until is None:
+        condition.wait()
+    else:
+        remaining = until - time.time()
+        if remaining < 0:
+            raise grpc.FutureTimeoutError()
+        else:
+            condition.wait(timeout=remaining)
+
+
+_INTERNAL_CALL_ERROR_MESSAGE_FORMAT = (
+    'Internal gRPC call error %d. ' +
+    'Please report to https://github.com/grpc/grpc/issues')
+
+
+def _check_call_error(call_error, metadata):
+    if call_error == cygrpc.CallError.invalid_metadata:
+        raise ValueError('metadata was invalid: %s' % metadata)
+    elif call_error != cygrpc.CallError.ok:
+        raise ValueError(_INTERNAL_CALL_ERROR_MESSAGE_FORMAT % call_error)
+
+
+def _call_error_set_RPCstate(state, call_error, metadata):
+    if call_error == cygrpc.CallError.invalid_metadata:
+        _abort(state, grpc.StatusCode.INTERNAL,
+               'metadata was invalid: %s' % metadata)
     else:
-      condition.wait(timeout=remaining)
+        _abort(state, grpc.StatusCode.INTERNAL,
+               _INTERNAL_CALL_ERROR_MESSAGE_FORMAT % call_error)
 
 
 class _RPCState(object):
 
-  def __init__(self, due, initial_metadata, trailing_metadata, code, details):
-    self.condition = threading.Condition()
-    # The cygrpc.OperationType objects representing events due from the RPC's
-    # completion queue.
-    self.due = set(due)
-    self.initial_metadata = initial_metadata
-    self.response = None
-    self.trailing_metadata = trailing_metadata
-    self.code = code
-    self.details = details
-    # The semantics of grpc.Future.cancel and grpc.Future.cancelled are
-    # slightly wonky, so they have to be tracked separately from the rest of the
-    # result of the RPC. This field tracks whether cancellation was requested
-    # prior to termination of the RPC.
-    self.cancelled = False
-    self.callbacks = []
+    def __init__(self, due, initial_metadata, trailing_metadata, code, details):
+        self.condition = threading.Condition()
+        # The cygrpc.OperationType objects representing events due from the RPC's
+        # completion queue.
+        self.due = set(due)
+        self.initial_metadata = initial_metadata
+        self.response = None
+        self.trailing_metadata = trailing_metadata
+        self.code = code
+        self.details = details
+        # The semantics of grpc.Future.cancel and grpc.Future.cancelled are
+        # slightly wonky, so they have to be tracked separately from the rest of the
+        # result of the RPC. This field tracks whether cancellation was requested
+        # prior to termination of the RPC.
+        self.cancelled = False
+        self.callbacks = []
 
 
 def _abort(state, code, details):
-  if state.code is None:
-    state.code = code
-    state.details = details
-    if state.initial_metadata is None:
-      state.initial_metadata = _EMPTY_METADATA
-    state.trailing_metadata = _EMPTY_METADATA
+    if state.code is None:
+        state.code = code
+        state.details = details
+        if state.initial_metadata is None:
+            state.initial_metadata = _EMPTY_METADATA
+        state.trailing_metadata = _EMPTY_METADATA
 
 
 def _handle_event(event, state, response_deserializer):
-  callbacks = []
-  for batch_operation in event.batch_operations:
-    operation_type = batch_operation.type
-    state.due.remove(operation_type)
-    if operation_type == cygrpc.OperationType.receive_initial_metadata:
-      state.initial_metadata = batch_operation.received_metadata
-    elif operation_type == cygrpc.OperationType.receive_message:
-      serialized_response = batch_operation.received_message.bytes()
-      if serialized_response is not None:
-        response = _common.deserialize(
-            serialized_response, response_deserializer)
-        if response is None:
-          details = 'Exception deserializing response!'
-          _abort(state, grpc.StatusCode.INTERNAL, details)
-        else:
-          state.response = response
-    elif operation_type == cygrpc.OperationType.receive_status_on_client:
-      state.trailing_metadata = batch_operation.received_metadata
-      if state.code is None:
-        code = _common.CYGRPC_STATUS_CODE_TO_STATUS_CODE.get(
-            batch_operation.received_status_code)
-        if code is None:
-          state.code = grpc.StatusCode.UNKNOWN
-          state.details = _unknown_code_details(
-              batch_operation.received_status_code,
-              batch_operation.received_status_details)
-        else:
-          state.code = code
-          state.details = batch_operation.received_status_details
-      callbacks.extend(state.callbacks)
-      state.callbacks = None
-  return callbacks
+    callbacks = []
+    for batch_operation in event.batch_operations:
+        operation_type = batch_operation.type
+        state.due.remove(operation_type)
+        if operation_type == cygrpc.OperationType.receive_initial_metadata:
+            state.initial_metadata = batch_operation.received_metadata
+        elif operation_type == cygrpc.OperationType.receive_message:
+            serialized_response = batch_operation.received_message.bytes()
+            if serialized_response is not None:
+                response = _common.deserialize(serialized_response,
+                                               response_deserializer)
+                if response is None:
+                    details = 'Exception deserializing response!'
+                    _abort(state, grpc.StatusCode.INTERNAL, details)
+                else:
+                    state.response = response
+        elif operation_type == cygrpc.OperationType.receive_status_on_client:
+            state.trailing_metadata = batch_operation.received_metadata
+            if state.code is None:
+                code = _common.CYGRPC_STATUS_CODE_TO_STATUS_CODE.get(
+                    batch_operation.received_status_code)
+                if code is None:
+                    state.code = grpc.StatusCode.UNKNOWN
+                    state.details = _unknown_code_details(
+                        batch_operation.received_status_code,
+                        batch_operation.received_status_details)
+                else:
+                    state.code = code
+                    state.details = batch_operation.received_status_details
+            callbacks.extend(state.callbacks)
+            state.callbacks = None
+    return callbacks
 
 
 def _event_handler(state, call, response_deserializer):
-  def handle_event(event):
-    with state.condition:
-      callbacks = _handle_event(event, state, response_deserializer)
-      state.condition.notify_all()
-      done = not state.due
-    for callback in callbacks:
-      callback()
-    return call if done else None
-  return handle_event
-
-
-def _consume_request_iterator(
-    request_iterator, state, call, request_serializer):
-  event_handler = _event_handler(state, call, None)
-
-  def consume_request_iterator():
-    for request in request_iterator:
-      serialized_request = _common.serialize(request, request_serializer)
-      with state.condition:
-        if state.code is None and not state.cancelled:
-          if serialized_request is None:
-            call.cancel()
-            details = 'Exception serializing request!'
-            _abort(state, grpc.StatusCode.INTERNAL, details)
-            return
-          else:
-            operations = (
-                cygrpc.operation_send_message(
-                    serialized_request, _EMPTY_FLAGS),
-            )
-            call.start_client_batch(cygrpc.Operations(operations),
-                                    event_handler)
-            state.due.add(cygrpc.OperationType.send_message)
-            while True:
-              state.condition.wait()
-              if state.code is None:
-                if cygrpc.OperationType.send_message not in state.due:
-                  break
-              else:
+
+    def handle_event(event):
+        with state.condition:
+            callbacks = _handle_event(event, state, response_deserializer)
+            state.condition.notify_all()
+            done = not state.due
+        for callback in callbacks:
+            callback()
+        return call if done else None
+
+    return handle_event
+
+
+def _consume_request_iterator(request_iterator, state, call,
+                              request_serializer):
+    event_handler = _event_handler(state, call, None)
+
+    def consume_request_iterator():
+        while True:
+            try:
+                request = next(request_iterator)
+            except StopIteration:
+                break
+            except Exception as e:
+                logging.exception("Exception iterating requests!")
+                call.cancel()
+                _abort(state, grpc.StatusCode.UNKNOWN,
+                       "Exception iterating requests!")
                 return
-        else:
-          return
-    with state.condition:
-      if state.code is None:
-        operations = (
-            cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
-        )
-        call.start_client_batch(cygrpc.Operations(operations), event_handler)
-        state.due.add(cygrpc.OperationType.send_close_from_client)
-
-  def stop_consumption_thread(timeout):
-    with state.condition:
-      if state.code is None:
-        call.cancel()
-        state.cancelled = True
-        _abort(state, grpc.StatusCode.CANCELLED, 'Cancelled!')
-        state.condition.notify_all()
-
-  consumption_thread = _common.CleanupThread(
-      stop_consumption_thread, target=consume_request_iterator)
-  consumption_thread.start()
+            serialized_request = _common.serialize(request, request_serializer)
+            with state.condition:
+                if state.code is None and not state.cancelled:
+                    if serialized_request is None:
+                        call.cancel()
+                        details = 'Exception serializing request!'
+                        _abort(state, grpc.StatusCode.INTERNAL, details)
+                        return
+                    else:
+                        operations = (cygrpc.operation_send_message(
+                            serialized_request, _EMPTY_FLAGS),)
+                        call.start_client_batch(
+                            cygrpc.Operations(operations), event_handler)
+                        state.due.add(cygrpc.OperationType.send_message)
+                        while True:
+                            state.condition.wait()
+                            if state.code is None:
+                                if cygrpc.OperationType.send_message not in state.due:
+                                    break
+                            else:
+                                return
+                else:
+                    return
+        with state.condition:
+            if state.code is None:
+                operations = (
+                    cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),)
+                call.start_client_batch(
+                    cygrpc.Operations(operations), event_handler)
+                state.due.add(cygrpc.OperationType.send_close_from_client)
+
+    def stop_consumption_thread(timeout):
+        with state.condition:
+            if state.code is None:
+                call.cancel()
+                state.cancelled = True
+                _abort(state, grpc.StatusCode.CANCELLED, 'Cancelled!')
+                state.condition.notify_all()
+
+    consumption_thread = _common.CleanupThread(
+        stop_consumption_thread, target=consume_request_iterator)
+    consumption_thread.start()
 
 
 class _Rendezvous(grpc.RpcError, grpc.Future, grpc.Call):
 
-  def __init__(self, state, call, response_deserializer, deadline):
-    super(_Rendezvous, self).__init__()
-    self._state = state
-    self._call = call
-    self._response_deserializer = response_deserializer
-    self._deadline = deadline
-
-  def cancel(self):
-    with self._state.condition:
-      if self._state.code is None:
-        self._call.cancel()
-        self._state.cancelled = True
-        _abort(self._state, grpc.StatusCode.CANCELLED, 'Cancelled!')
-        self._state.condition.notify_all()
-      return False
-
-  def cancelled(self):
-    with self._state.condition:
-      return self._state.cancelled
-
-  def running(self):
-    with self._state.condition:
-      return self._state.code is None
-
-  def done(self):
-    with self._state.condition:
-      return self._state.code is not None
-
-  def result(self, timeout=None):
-    until = None if timeout is None else time.time() + timeout
-    with self._state.condition:
-      while True:
-        if self._state.code is None:
-          _wait_once_until(self._state.condition, until)
-        elif self._state.code is grpc.StatusCode.OK:
-          return self._state.response
-        elif self._state.cancelled:
-          raise grpc.FutureCancelledError()
-        else:
-          raise self
-
-  def exception(self, timeout=None):
-    until = None if timeout is None else time.time() + timeout
-    with self._state.condition:
-      while True:
-        if self._state.code is None:
-          _wait_once_until(self._state.condition, until)
-        elif self._state.code is grpc.StatusCode.OK:
-          return None
-        elif self._state.cancelled:
-          raise grpc.FutureCancelledError()
-        else:
-          return self
-
-  def traceback(self, timeout=None):
-    until = None if timeout is None else time.time() + timeout
-    with self._state.condition:
-      while True:
-        if self._state.code is None:
-          _wait_once_until(self._state.condition, until)
-        elif self._state.code is grpc.StatusCode.OK:
-          return None
-        elif self._state.cancelled:
-          raise grpc.FutureCancelledError()
+    def __init__(self, state, call, response_deserializer, deadline):
+        super(_Rendezvous, self).__init__()
+        self._state = state
+        self._call = call
+        self._response_deserializer = response_deserializer
+        self._deadline = deadline
+
+    def cancel(self):
+        with self._state.condition:
+            if self._state.code is None:
+                self._call.cancel()
+                self._state.cancelled = True
+                _abort(self._state, grpc.StatusCode.CANCELLED, 'Cancelled!')
+                self._state.condition.notify_all()
+            return False
+
+    def cancelled(self):
+        with self._state.condition:
+            return self._state.cancelled
+
+    def running(self):
+        with self._state.condition:
+            return self._state.code is None
+
+    def done(self):
+        with self._state.condition:
+            return self._state.code is not None
+
+    def result(self, timeout=None):
+        until = None if timeout is None else time.time() + timeout
+        with self._state.condition:
+            while True:
+                if self._state.code is None:
+                    _wait_once_until(self._state.condition, until)
+                elif self._state.code is grpc.StatusCode.OK:
+                    return self._state.response
+                elif self._state.cancelled:
+                    raise grpc.FutureCancelledError()
+                else:
+                    raise self
+
+    def exception(self, timeout=None):
+        until = None if timeout is None else time.time() + timeout
+        with self._state.condition:
+            while True:
+                if self._state.code is None:
+                    _wait_once_until(self._state.condition, until)
+                elif self._state.code is grpc.StatusCode.OK:
+                    return None
+                elif self._state.cancelled:
+                    raise grpc.FutureCancelledError()
+                else:
+                    return self
+
+    def traceback(self, timeout=None):
+        until = None if timeout is None else time.time() + timeout
+        with self._state.condition:
+            while True:
+                if self._state.code is None:
+                    _wait_once_until(self._state.condition, until)
+                elif self._state.code is grpc.StatusCode.OK:
+                    return None
+                elif self._state.cancelled:
+                    raise grpc.FutureCancelledError()
+                else:
+                    try:
+                        raise self
+                    except grpc.RpcError:
+                        return sys.exc_info()[2]
+
+    def add_done_callback(self, fn):
+        with self._state.condition:
+            if self._state.code is None:
+                self._state.callbacks.append(lambda: fn(self))
+                return
+
+        fn(self)
+
+    def _next(self):
+        with self._state.condition:
+            if self._state.code is None:
+                event_handler = _event_handler(self._state, self._call,
+                                               self._response_deserializer)
+                self._call.start_client_batch(
+                    cygrpc.Operations(
+                        (cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
+                    event_handler)
+                self._state.due.add(cygrpc.OperationType.receive_message)
+            elif self._state.code is grpc.StatusCode.OK:
+                raise StopIteration()
+            else:
+                raise self
+            while True:
+                self._state.condition.wait()
+                if self._state.response is not None:
+                    response = self._state.response
+                    self._state.response = None
+                    return response
+                elif cygrpc.OperationType.receive_message not in self._state.due:
+                    if self._state.code is grpc.StatusCode.OK:
+                        raise StopIteration()
+                    elif self._state.code is not None:
+                        raise self
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        return self._next()
+
+    def next(self):
+        return self._next()
+
+    def is_active(self):
+        with self._state.condition:
+            return self._state.code is None
+
+    def time_remaining(self):
+        if self._deadline is None:
+            return None
         else:
-          try:
-            raise self
-          except grpc.RpcError:
-            return sys.exc_info()[2]
-
-  def add_done_callback(self, fn):
-    with self._state.condition:
-      if self._state.code is None:
-        self._state.callbacks.append(lambda: fn(self))
-        return
-
-    fn(self)
-
-  def _next(self):
-    with self._state.condition:
-      if self._state.code is None:
-        event_handler = _event_handler(
-            self._state, self._call, self._response_deserializer)
-        self._call.start_client_batch(
-            cygrpc.Operations(
-                (cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
-            event_handler)
-        self._state.due.add(cygrpc.OperationType.receive_message)
-      elif self._state.code is grpc.StatusCode.OK:
-        raise StopIteration()
-      else:
-        raise self
-      while True:
-        self._state.condition.wait()
-        if self._state.response is not None:
-          response = self._state.response
-          self._state.response = None
-          return response
-        elif cygrpc.OperationType.receive_message not in self._state.due:
-          if self._state.code is grpc.StatusCode.OK:
-            raise StopIteration()
-          elif self._state.code is not None:
-            raise self
-
-  def __iter__(self):
-    return self
-
-  def __next__(self):
-    return self._next()
-
-  def next(self):
-    return self._next()
-
-  def is_active(self):
-    with self._state.condition:
-      return self._state.code is None
-
-  def time_remaining(self):
-    if self._deadline is None:
-      return None
-    else:
-      return max(self._deadline - time.time(), 0)
-
-  def add_callback(self, callback):
-    with self._state.condition:
-      if self._state.callbacks is None:
-        return False
-      else:
-        self._state.callbacks.append(lambda: callback())
-        return True
-
-  def initial_metadata(self):
-    with self._state.condition:
-      while self._state.initial_metadata is None:
-        self._state.condition.wait()
-      return _common.application_metadata(self._state.initial_metadata)
-
-  def trailing_metadata(self):
-    with self._state.condition:
-      while self._state.trailing_metadata is None:
-        self._state.condition.wait()
-      return _common.application_metadata(self._state.trailing_metadata)
-
-  def code(self):
-    with self._state.condition:
-      while self._state.code is None:
-        self._state.condition.wait()
-      return self._state.code
-
-  def details(self):
-    with self._state.condition:
-      while self._state.details is None:
-        self._state.condition.wait()
-      return _common.decode(self._state.details)
-
-  def _repr(self):
-    with self._state.condition:
-      if self._state.code is None:
-        return '<_Rendezvous object of in-flight RPC>'
-      else:
-        return '<_Rendezvous of RPC that terminated with ({}, {})>'.format(
-            self._state.code, _common.decode(self._state.details))
-
-  def __repr__(self):
-    return self._repr()
-
-  def __str__(self):
-    return self._repr()
-
-  def __del__(self):
-    with self._state.condition:
-      if self._state.code is None:
-        self._call.cancel()
-        self._state.cancelled = True
-        self._state.code = grpc.StatusCode.CANCELLED
-        self._state.condition.notify_all()
+            return max(self._deadline - time.time(), 0)
+
+    def add_callback(self, callback):
+        with self._state.condition:
+            if self._state.callbacks is None:
+                return False
+            else:
+                self._state.callbacks.append(callback)
+                return True
+
+    def initial_metadata(self):
+        with self._state.condition:
+            while self._state.initial_metadata is None:
+                self._state.condition.wait()
+            return _common.application_metadata(self._state.initial_metadata)
+
+    def trailing_metadata(self):
+        with self._state.condition:
+            while self._state.trailing_metadata is None:
+                self._state.condition.wait()
+            return _common.application_metadata(self._state.trailing_metadata)
+
+    def code(self):
+        with self._state.condition:
+            while self._state.code is None:
+                self._state.condition.wait()
+            return self._state.code
+
+    def details(self):
+        with self._state.condition:
+            while self._state.details is None:
+                self._state.condition.wait()
+            return _common.decode(self._state.details)
+
+    def _repr(self):
+        with self._state.condition:
+            if self._state.code is None:
+                return '<_Rendezvous object of in-flight RPC>'
+            else:
+                return '<_Rendezvous of RPC that terminated with ({}, {})>'.format(
+                    self._state.code, _common.decode(self._state.details))
+
+    def __repr__(self):
+        return self._repr()
+
+    def __str__(self):
+        return self._repr()
+
+    def __del__(self):
+        with self._state.condition:
+            if self._state.code is None:
+                self._call.cancel()
+                self._state.cancelled = True
+                self._state.code = grpc.StatusCode.CANCELLED
+                self._state.condition.notify_all()
 
 
 def _start_unary_request(request, timeout, request_serializer):
-  deadline, deadline_timespec = _deadline(timeout)
-  serialized_request = _common.serialize(request, request_serializer)
-  if serialized_request is None:
-    state = _RPCState(
-        (), _EMPTY_METADATA, _EMPTY_METADATA, grpc.StatusCode.INTERNAL,
-        'Exception serializing request!')
-    rendezvous = _Rendezvous(state, None, None, deadline)
-    return deadline, deadline_timespec, None, rendezvous
-  else:
-    return deadline, deadline_timespec, serialized_request, None
+    deadline, deadline_timespec = _deadline(timeout)
+    serialized_request = _common.serialize(request, request_serializer)
+    if serialized_request is None:
+        state = _RPCState((), _EMPTY_METADATA, _EMPTY_METADATA,
+                          grpc.StatusCode.INTERNAL,
+                          'Exception serializing request!')
+        rendezvous = _Rendezvous(state, None, None, deadline)
+        return deadline, deadline_timespec, None, rendezvous
+    else:
+        return deadline, deadline_timespec, serialized_request, None
 
 
 def _end_unary_response_blocking(state, with_call, deadline):
-  if state.code is grpc.StatusCode.OK:
-    if with_call:
-      rendezvous = _Rendezvous(state, None, None, deadline)
-      return state.response, rendezvous
+    if state.code is grpc.StatusCode.OK:
+        if with_call:
+            rendezvous = _Rendezvous(state, None, None, deadline)
+            return state.response, rendezvous
+        else:
+            return state.response
     else:
-      return state.response
-  else:
-    raise _Rendezvous(state, None, None, deadline)
+        raise _Rendezvous(state, None, None, deadline)
 
 
 class _UnaryUnaryMultiCallable(grpc.UnaryUnaryMultiCallable):
 
-  def __init__(
-      self, channel, create_managed_call, method, request_serializer,
-      response_deserializer):
-    self._channel = channel
-    self._create_managed_call = create_managed_call
-    self._method = method
-    self._request_serializer = request_serializer
-    self._response_deserializer = response_deserializer
-
-  def _prepare(self, request, timeout, metadata):
-    deadline, deadline_timespec, serialized_request, rendezvous = (
-        _start_unary_request(request, timeout, self._request_serializer))
-    if serialized_request is None:
-      return None, None, None, None, rendezvous
-    else:
-      state = _RPCState(_UNARY_UNARY_INITIAL_DUE, None, None, None, None)
-      operations = (
-          cygrpc.operation_send_initial_metadata(
-              _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
-          cygrpc.operation_send_message(serialized_request, _EMPTY_FLAGS),
-          cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
-          cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
-          cygrpc.operation_receive_message(_EMPTY_FLAGS),
-          cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
-      )
-      return state, operations, deadline, deadline_timespec, None
-
-  def _blocking(self, request, timeout, metadata, credentials):
-    state, operations, deadline, deadline_timespec, rendezvous = self._prepare(
-        request, timeout, metadata)
-    if rendezvous:
-      raise rendezvous
-    else:
-      completion_queue = cygrpc.CompletionQueue()
-      call = self._channel.create_call(
-          None, 0, completion_queue, self._method, None, deadline_timespec)
-      if credentials is not None:
-        call.set_credentials(credentials._credentials)
-      call.start_client_batch(cygrpc.Operations(operations), None)
-      _handle_event(completion_queue.poll(), state, self._response_deserializer)
-      return state, deadline
-
-  def __call__(self, request, timeout=None, metadata=None, credentials=None):
-    state, deadline, = self._blocking(request, timeout, metadata, credentials)
-    return _end_unary_response_blocking(state, False, deadline)
-
-  def with_call(self, request, timeout=None, metadata=None, credentials=None):
-    state, deadline, = self._blocking(request, timeout, metadata, credentials)
-    return _end_unary_response_blocking(state, True, deadline)
-
-  def future(self, request, timeout=None, metadata=None, credentials=None):
-    state, operations, deadline, deadline_timespec, rendezvous = self._prepare(
-        request, timeout, metadata)
-    if rendezvous:
-      return rendezvous
-    else:
-      call = self._create_managed_call(
-          None, 0, self._method, None, deadline_timespec)
-      if credentials is not None:
-        call.set_credentials(credentials._credentials)
-      event_handler = _event_handler(state, call, self._response_deserializer)
-      with state.condition:
-        call.start_client_batch(cygrpc.Operations(operations), event_handler)
-      return _Rendezvous(state, call, self._response_deserializer, deadline)
+    def __init__(self, channel, managed_call, method, request_serializer,
+                 response_deserializer):
+        self._channel = channel
+        self._managed_call = managed_call
+        self._method = method
+        self._request_serializer = request_serializer
+        self._response_deserializer = response_deserializer
+
+    def _prepare(self, request, timeout, metadata):
+        deadline, deadline_timespec, serialized_request, rendezvous = (
+            _start_unary_request(request, timeout, self._request_serializer))
+        if serialized_request is None:
+            return None, None, None, None, rendezvous
+        else:
+            state = _RPCState(_UNARY_UNARY_INITIAL_DUE, None, None, None, None)
+            operations = (
+                cygrpc.operation_send_initial_metadata(
+                    _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
+                cygrpc.operation_send_message(serialized_request, _EMPTY_FLAGS),
+                cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
+                cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
+                cygrpc.operation_receive_message(_EMPTY_FLAGS),
+                cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),)
+            return state, operations, deadline, deadline_timespec, None
+
+    def _blocking(self, request, timeout, metadata, credentials):
+        state, operations, deadline, deadline_timespec, rendezvous = self._prepare(
+            request, timeout, metadata)
+        if rendezvous:
+            raise rendezvous
+        else:
+            completion_queue = cygrpc.CompletionQueue()
+            call = self._channel.create_call(None, 0, completion_queue,
+                                             self._method, None,
+                                             deadline_timespec)
+            if credentials is not None:
+                call.set_credentials(credentials._credentials)
+            call_error = call.start_client_batch(
+                cygrpc.Operations(operations), None)
+            _check_call_error(call_error, metadata)
+            _handle_event(completion_queue.poll(), state,
+                          self._response_deserializer)
+            return state, deadline
+
+    def __call__(self, request, timeout=None, metadata=None, credentials=None):
+        state, deadline, = self._blocking(request, timeout, metadata,
+                                          credentials)
+        return _end_unary_response_blocking(state, False, deadline)
+
+    def with_call(self, request, timeout=None, metadata=None, credentials=None):
+        state, deadline, = self._blocking(request, timeout, metadata,
+                                          credentials)
+        return _end_unary_response_blocking(state, True, deadline)
+
+    def future(self, request, timeout=None, metadata=None, credentials=None):
+        state, operations, deadline, deadline_timespec, rendezvous = self._prepare(
+            request, timeout, metadata)
+        if rendezvous:
+            return rendezvous
+        else:
+            call, drive_call = self._managed_call(None, 0, self._method, None,
+                                                  deadline_timespec)
+            if credentials is not None:
+                call.set_credentials(credentials._credentials)
+            event_handler = _event_handler(state, call,
+                                           self._response_deserializer)
+            with state.condition:
+                call_error = call.start_client_batch(
+                    cygrpc.Operations(operations), event_handler)
+                if call_error != cygrpc.CallError.ok:
+                    _call_error_set_RPCstate(state, call_error, metadata)
+                    return _Rendezvous(state, None, None, deadline)
+                drive_call()
+            return _Rendezvous(state, call, self._response_deserializer,
+                               deadline)
 
 
 class _UnaryStreamMultiCallable(grpc.UnaryStreamMultiCallable):
 
-  def __init__(
-      self, channel, create_managed_call, method, request_serializer,
-      response_deserializer):
-    self._channel = channel
-    self._create_managed_call = create_managed_call
-    self._method = method
-    self._request_serializer = request_serializer
-    self._response_deserializer = response_deserializer
-
-  def __call__(self, request, timeout=None, metadata=None, credentials=None):
-    deadline, deadline_timespec, serialized_request, rendezvous = (
-        _start_unary_request(request, timeout, self._request_serializer))
-    if serialized_request is None:
-      raise rendezvous
-    else:
-      state = _RPCState(_UNARY_STREAM_INITIAL_DUE, None, None, None, None)
-      call = self._create_managed_call(
-          None, 0, self._method, None, deadline_timespec)
-      if credentials is not None:
-        call.set_credentials(credentials._credentials)
-      event_handler = _event_handler(state, call, self._response_deserializer)
-      with state.condition:
-        call.start_client_batch(
-            cygrpc.Operations(
-                (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
-            event_handler)
-        operations = (
-            cygrpc.operation_send_initial_metadata(
-                _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
-            cygrpc.operation_send_message(serialized_request, _EMPTY_FLAGS),
-            cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
-            cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
-        )
-        call.start_client_batch(cygrpc.Operations(operations), event_handler)
-      return _Rendezvous(state, call, self._response_deserializer, deadline)
+    def __init__(self, channel, managed_call, method, request_serializer,
+                 response_deserializer):
+        self._channel = channel
+        self._managed_call = managed_call
+        self._method = method
+        self._request_serializer = request_serializer
+        self._response_deserializer = response_deserializer
+
+    def __call__(self, request, timeout=None, metadata=None, credentials=None):
+        deadline, deadline_timespec, serialized_request, rendezvous = (
+            _start_unary_request(request, timeout, self._request_serializer))
+        if serialized_request is None:
+            raise rendezvous
+        else:
+            state = _RPCState(_UNARY_STREAM_INITIAL_DUE, None, None, None, None)
+            call, drive_call = self._managed_call(None, 0, self._method, None,
+                                                  deadline_timespec)
+            if credentials is not None:
+                call.set_credentials(credentials._credentials)
+            event_handler = _event_handler(state, call,
+                                           self._response_deserializer)
+            with state.condition:
+                call.start_client_batch(
+                    cygrpc.Operations((
+                        cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
+                    )), event_handler)
+                operations = (
+                    cygrpc.operation_send_initial_metadata(
+                        _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
+                    cygrpc.operation_send_message(serialized_request,
+                                                  _EMPTY_FLAGS),
+                    cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
+                    cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),)
+                call_error = call.start_client_batch(
+                    cygrpc.Operations(operations), event_handler)
+                if call_error != cygrpc.CallError.ok:
+                    _call_error_set_RPCstate(state, call_error, metadata)
+                    return _Rendezvous(state, None, None, deadline)
+                drive_call()
+            return _Rendezvous(state, call, self._response_deserializer,
+                               deadline)
 
 
 class _StreamUnaryMultiCallable(grpc.StreamUnaryMultiCallable):
 
-  def __init__(
-      self, channel, create_managed_call, method, request_serializer,
-      response_deserializer):
-    self._channel = channel
-    self._create_managed_call = create_managed_call
-    self._method = method
-    self._request_serializer = request_serializer
-    self._response_deserializer = response_deserializer
-
-  def _blocking(self, request_iterator, timeout, metadata, credentials):
-    deadline, deadline_timespec = _deadline(timeout)
-    state = _RPCState(_STREAM_UNARY_INITIAL_DUE, None, None, None, None)
-    completion_queue = cygrpc.CompletionQueue()
-    call = self._channel.create_call(
-        None, 0, completion_queue, self._method, None, deadline_timespec)
-    if credentials is not None:
-      call.set_credentials(credentials._credentials)
-    with state.condition:
-      call.start_client_batch(
-          cygrpc.Operations(
-              (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
-          None)
-      operations = (
-          cygrpc.operation_send_initial_metadata(
-              _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
-          cygrpc.operation_receive_message(_EMPTY_FLAGS),
-          cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
-      )
-      call.start_client_batch(cygrpc.Operations(operations), None)
-      _consume_request_iterator(
-          request_iterator, state, call, self._request_serializer)
-    while True:
-      event = completion_queue.poll()
-      with state.condition:
-        _handle_event(event, state, self._response_deserializer)
-        state.condition.notify_all()
-        if not state.due:
-          break
-    return state, deadline
-
-  def __call__(
-      self, request_iterator, timeout=None, metadata=None, credentials=None):
-    state, deadline, = self._blocking(
-        request_iterator, timeout, metadata, credentials)
-    return _end_unary_response_blocking(state, False, deadline)
-
-  def with_call(
-      self, request_iterator, timeout=None, metadata=None, credentials=None):
-    state, deadline, = self._blocking(
-        request_iterator, timeout, metadata, credentials)
-    return _end_unary_response_blocking(state, True, deadline)
-
-  def future(
-      self, request_iterator, timeout=None, metadata=None, credentials=None):
-    deadline, deadline_timespec = _deadline(timeout)
-    state = _RPCState(_STREAM_UNARY_INITIAL_DUE, None, None, None, None)
-    call = self._create_managed_call(
-        None, 0, self._method, None, deadline_timespec)
-    if credentials is not None:
-      call.set_credentials(credentials._credentials)
-    event_handler = _event_handler(state, call, self._response_deserializer)
-    with state.condition:
-      call.start_client_batch(
-          cygrpc.Operations(
-              (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
-          event_handler)
-      operations = (
-          cygrpc.operation_send_initial_metadata(
-              _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
-          cygrpc.operation_receive_message(_EMPTY_FLAGS),
-          cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
-      )
-      call.start_client_batch(cygrpc.Operations(operations), event_handler)
-      _consume_request_iterator(
-          request_iterator, state, call, self._request_serializer)
-    return _Rendezvous(state, call, self._response_deserializer, deadline)
+    def __init__(self, channel, managed_call, method, request_serializer,
+                 response_deserializer):
+        self._channel = channel
+        self._managed_call = managed_call
+        self._method = method
+        self._request_serializer = request_serializer
+        self._response_deserializer = response_deserializer
+
+    def _blocking(self, request_iterator, timeout, metadata, credentials):
+        deadline, deadline_timespec = _deadline(timeout)
+        state = _RPCState(_STREAM_UNARY_INITIAL_DUE, None, None, None, None)
+        completion_queue = cygrpc.CompletionQueue()
+        call = self._channel.create_call(None, 0, completion_queue,
+                                         self._method, None, deadline_timespec)
+        if credentials is not None:
+            call.set_credentials(credentials._credentials)
+        with state.condition:
+            call.start_client_batch(
+                cygrpc.Operations(
+                    (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
+                None)
+            operations = (
+                cygrpc.operation_send_initial_metadata(
+                    _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
+                cygrpc.operation_receive_message(_EMPTY_FLAGS),
+                cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),)
+            call_error = call.start_client_batch(
+                cygrpc.Operations(operations), None)
+            _check_call_error(call_error, metadata)
+            _consume_request_iterator(request_iterator, state, call,
+                                      self._request_serializer)
+        while True:
+            event = completion_queue.poll()
+            with state.condition:
+                _handle_event(event, state, self._response_deserializer)
+                state.condition.notify_all()
+                if not state.due:
+                    break
+        return state, deadline
+
+    def __call__(self,
+                 request_iterator,
+                 timeout=None,
+                 metadata=None,
+                 credentials=None):
+        state, deadline, = self._blocking(request_iterator, timeout, metadata,
+                                          credentials)
+        return _end_unary_response_blocking(state, False, deadline)
+
+    def with_call(self,
+                  request_iterator,
+                  timeout=None,
+                  metadata=None,
+                  credentials=None):
+        state, deadline, = self._blocking(request_iterator, timeout, metadata,
+                                          credentials)
+        return _end_unary_response_blocking(state, True, deadline)
+
+    def future(self,
+               request_iterator,
+               timeout=None,
+               metadata=None,
+               credentials=None):
+        deadline, deadline_timespec = _deadline(timeout)
+        state = _RPCState(_STREAM_UNARY_INITIAL_DUE, None, None, None, None)
+        call, drive_call = self._managed_call(None, 0, self._method, None,
+                                              deadline_timespec)
+        if credentials is not None:
+            call.set_credentials(credentials._credentials)
+        event_handler = _event_handler(state, call, self._response_deserializer)
+        with state.condition:
+            call.start_client_batch(
+                cygrpc.Operations(
+                    (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
+                event_handler)
+            operations = (
+                cygrpc.operation_send_initial_metadata(
+                    _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
+                cygrpc.operation_receive_message(_EMPTY_FLAGS),
+                cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),)
+            call_error = call.start_client_batch(
+                cygrpc.Operations(operations), event_handler)
+            if call_error != cygrpc.CallError.ok:
+                _call_error_set_RPCstate(state, call_error, metadata)
+                return _Rendezvous(state, None, None, deadline)
+            drive_call()
+            _consume_request_iterator(request_iterator, state, call,
+                                      self._request_serializer)
+        return _Rendezvous(state, call, self._response_deserializer, deadline)
 
 
 class _StreamStreamMultiCallable(grpc.StreamStreamMultiCallable):
 
-  def __init__(
-      self, channel, create_managed_call, method, request_serializer,
-      response_deserializer):
-    self._channel = channel
-    self._create_managed_call = create_managed_call
-    self._method = method
-    self._request_serializer = request_serializer
-    self._response_deserializer = response_deserializer
-
-  def __call__(
-      self, request_iterator, timeout=None, metadata=None, credentials=None):
-    deadline, deadline_timespec = _deadline(timeout)
-    state = _RPCState(_STREAM_STREAM_INITIAL_DUE, None, None, None, None)
-    call = self._create_managed_call(
-        None, 0, self._method, None, deadline_timespec)
-    if credentials is not None:
-      call.set_credentials(credentials._credentials)
-    event_handler = _event_handler(state, call, self._response_deserializer)
-    with state.condition:
-      call.start_client_batch(
-          cygrpc.Operations(
-              (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
-          event_handler)
-      operations = (
-          cygrpc.operation_send_initial_metadata(
-              _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
-          cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
-      )
-      call.start_client_batch(cygrpc.Operations(operations), event_handler)
-      _consume_request_iterator(
-          request_iterator, state, call, self._request_serializer)
-    return _Rendezvous(state, call, self._response_deserializer, deadline)
+    def __init__(self, channel, managed_call, method, request_serializer,
+                 response_deserializer):
+        self._channel = channel
+        self._managed_call = managed_call
+        self._method = method
+        self._request_serializer = request_serializer
+        self._response_deserializer = response_deserializer
+
+    def __call__(self,
+                 request_iterator,
+                 timeout=None,
+                 metadata=None,
+                 credentials=None):
+        deadline, deadline_timespec = _deadline(timeout)
+        state = _RPCState(_STREAM_STREAM_INITIAL_DUE, None, None, None, None)
+        call, drive_call = self._managed_call(None, 0, self._method, None,
+                                              deadline_timespec)
+        if credentials is not None:
+            call.set_credentials(credentials._credentials)
+        event_handler = _event_handler(state, call, self._response_deserializer)
+        with state.condition:
+            call.start_client_batch(
+                cygrpc.Operations(
+                    (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
+                event_handler)
+            operations = (
+                cygrpc.operation_send_initial_metadata(
+                    _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
+                cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),)
+            call_error = call.start_client_batch(
+                cygrpc.Operations(operations), event_handler)
+            if call_error != cygrpc.CallError.ok:
+                _call_error_set_RPCstate(state, call_error, metadata)
+                return _Rendezvous(state, None, None, deadline)
+            drive_call()
+            _consume_request_iterator(request_iterator, state, call,
+                                      self._request_serializer)
+        return _Rendezvous(state, call, self._response_deserializer, deadline)
 
 
 class _ChannelCallState(object):
 
-  def __init__(self, channel):
-    self.lock = threading.Lock()
-    self.channel = channel
-    self.completion_queue = cygrpc.CompletionQueue()
-    self.managed_calls = None
+    def __init__(self, channel):
+        self.lock = threading.Lock()
+        self.channel = channel
+        self.completion_queue = cygrpc.CompletionQueue()
+        self.managed_calls = None
 
 
 def _run_channel_spin_thread(state):
-  def channel_spin():
-    while True:
-      event = state.completion_queue.poll()
-      completed_call = event.tag(event)
-      if completed_call is not None:
+
+    def channel_spin():
+        while True:
+            event = state.completion_queue.poll()
+            completed_call = event.tag(event)
+            if completed_call is not None:
+                with state.lock:
+                    state.managed_calls.remove(completed_call)
+                    if not state.managed_calls:
+                        state.managed_calls = None
+                        return
+
+    def stop_channel_spin(timeout):
         with state.lock:
-          state.managed_calls.remove(completed_call)
-          if not state.managed_calls:
-            state.managed_calls = None
-            return
+            if state.managed_calls is not None:
+                for call in state.managed_calls:
+                    call.cancel()
 
-  def stop_channel_spin(timeout):
-    with state.lock:
-      if state.managed_calls is not None:
-        for call in state.managed_calls:
-          call.cancel()
+    channel_spin_thread = _common.CleanupThread(
+        stop_channel_spin, target=channel_spin)
+    channel_spin_thread.start()
 
-  channel_spin_thread = _common.CleanupThread(
-      stop_channel_spin, target=channel_spin)
-  channel_spin_thread.start()
 
+def _channel_managed_call_management(state):
 
-def _create_channel_managed_call(state):
-  def create_channel_managed_call(parent, flags, method, host, deadline):
-    """Creates a managed cygrpc.Call.
+    def create(parent, flags, method, host, deadline):
+        """Creates a managed cygrpc.Call and a function to call to drive it.
 
-    Callers of this function must conduct at least one operation on the returned
-    call. The tags associated with operations conducted on the returned call
-    must be no-argument callables that return None to indicate that this channel
-    should continue polling for events associated with the call and return the
-    call itself to indicate that no more events associated with the call will be
-    generated.
+    If operations are successfully added to the returned cygrpc.Call, the
+    returned function must be called. If operations are not successfully added
+    to the returned cygrpc.Call, the returned function must not be called.
 
     Args:
       parent: A cygrpc.Call to be used as the parent of the created call.
@@ -706,191 +768,216 @@ def _create_channel_managed_call(state):
       deadline: A cygrpc.Timespec to be the deadline of the created call.
 
     Returns:
-      A cygrpc.Call with which to conduct an RPC.
+      A cygrpc.Call with which to conduct an RPC and a function to call if
+        operations are successfully started on the call.
     """
-    with state.lock:
-      call = state.channel.create_call(
-          parent, flags, state.completion_queue, method, host, deadline)
-      if state.managed_calls is None:
-        state.managed_calls = set((call,))
-        _run_channel_spin_thread(state)
-      else:
-        state.managed_calls.add(call)
-      return call
-  return create_channel_managed_call
+        call = state.channel.create_call(parent, flags, state.completion_queue,
+                                         method, host, deadline)
+
+        def drive():
+            with state.lock:
+                if state.managed_calls is None:
+                    state.managed_calls = set((call,))
+                    _run_channel_spin_thread(state)
+                else:
+                    state.managed_calls.add(call)
+
+        return call, drive
+
+    return create
 
 
 class _ChannelConnectivityState(object):
 
-  def __init__(self, channel):
-    self.lock = threading.Lock()
-    self.channel = channel
-    self.polling = False
-    self.connectivity = None
-    self.try_to_connect = False
-    self.callbacks_and_connectivities = []
-    self.delivering = False
+    def __init__(self, channel):
+        self.lock = threading.Lock()
+        self.channel = channel
+        self.polling = False
+        self.connectivity = None
+        self.try_to_connect = False
+        self.callbacks_and_connectivities = []
+        self.delivering = False
 
 
 def _deliveries(state):
-  callbacks_needing_update = []
-  for callback_and_connectivity in state.callbacks_and_connectivities:
-    callback, callback_connectivity, = callback_and_connectivity
-    if callback_connectivity is not state.connectivity:
-      callbacks_needing_update.append(callback)
-      callback_and_connectivity[1] = state.connectivity
-  return callbacks_needing_update
+    callbacks_needing_update = []
+    for callback_and_connectivity in state.callbacks_and_connectivities:
+        callback, callback_connectivity, = callback_and_connectivity
+        if callback_connectivity is not state.connectivity:
+            callbacks_needing_update.append(callback)
+            callback_and_connectivity[1] = state.connectivity
+    return callbacks_needing_update
 
 
 def _deliver(state, initial_connectivity, initial_callbacks):
-  connectivity = initial_connectivity
-  callbacks = initial_callbacks
-  while True:
-    for callback in callbacks:
-      callable_util.call_logging_exceptions(
-          callback, _CHANNEL_SUBSCRIPTION_CALLBACK_ERROR_LOG_MESSAGE,
-          connectivity)
-    with state.lock:
-      callbacks = _deliveries(state)
-      if callbacks:
-        connectivity = state.connectivity
-      else:
-        state.delivering = False
-        return
+    connectivity = initial_connectivity
+    callbacks = initial_callbacks
+    while True:
+        for callback in callbacks:
+            callable_util.call_logging_exceptions(
+                callback, _CHANNEL_SUBSCRIPTION_CALLBACK_ERROR_LOG_MESSAGE,
+                connectivity)
+        with state.lock:
+            callbacks = _deliveries(state)
+            if callbacks:
+                connectivity = state.connectivity
+            else:
+                state.delivering = False
+                return
 
 
 def _spawn_delivery(state, callbacks):
-  delivering_thread = threading.Thread(
-      target=_deliver, args=(state, state.connectivity, callbacks,))
-  delivering_thread.start()
-  state.delivering = True
+    delivering_thread = threading.Thread(
+        target=_deliver, args=(
+            state,
+            state.connectivity,
+            callbacks,))
+    delivering_thread.start()
+    state.delivering = True
 
 
 # NOTE(https://github.com/grpc/grpc/issues/3064): We'd rather not poll.
 def _poll_connectivity(state, channel, initial_try_to_connect):
-  try_to_connect = initial_try_to_connect
-  connectivity = channel.check_connectivity_state(try_to_connect)
-  with state.lock:
-    state.connectivity = (
-        _common.CYGRPC_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY[
-            connectivity])
-    callbacks = tuple(
-        callback for callback, unused_but_known_to_be_none_connectivity
-        in state.callbacks_and_connectivities)
-    for callback_and_connectivity in state.callbacks_and_connectivities:
-      callback_and_connectivity[1] = state.connectivity
-    if callbacks:
-      _spawn_delivery(state, callbacks)
-  completion_queue = cygrpc.CompletionQueue()
-  while True:
-    channel.watch_connectivity_state(
-        connectivity, cygrpc.Timespec(time.time() + 0.2),
-        completion_queue, None)
-    event = completion_queue.poll()
+    try_to_connect = initial_try_to_connect
+    connectivity = channel.check_connectivity_state(try_to_connect)
     with state.lock:
-      if not state.callbacks_and_connectivities and not state.try_to_connect:
-        state.polling = False
-        state.connectivity = None
-        break
-      try_to_connect = state.try_to_connect
-      state.try_to_connect = False
-    if event.success or try_to_connect:
-      connectivity = channel.check_connectivity_state(try_to_connect)
-      with state.lock:
         state.connectivity = (
             _common.CYGRPC_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY[
                 connectivity])
-        if not state.delivering:
-          callbacks = _deliveries(state)
-          if callbacks:
+        callbacks = tuple(callback
+                          for callback, unused_but_known_to_be_none_connectivity
+                          in state.callbacks_and_connectivities)
+        for callback_and_connectivity in state.callbacks_and_connectivities:
+            callback_and_connectivity[1] = state.connectivity
+        if callbacks:
             _spawn_delivery(state, callbacks)
+    completion_queue = cygrpc.CompletionQueue()
+    while True:
+        channel.watch_connectivity_state(connectivity,
+                                         cygrpc.Timespec(time.time() + 0.2),
+                                         completion_queue, None)
+        event = completion_queue.poll()
+        with state.lock:
+            if not state.callbacks_and_connectivities and not state.try_to_connect:
+                state.polling = False
+                state.connectivity = None
+                break
+            try_to_connect = state.try_to_connect
+            state.try_to_connect = False
+        if event.success or try_to_connect:
+            connectivity = channel.check_connectivity_state(try_to_connect)
+            with state.lock:
+                state.connectivity = (
+                    _common.CYGRPC_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY[
+                        connectivity])
+                if not state.delivering:
+                    callbacks = _deliveries(state)
+                    if callbacks:
+                        _spawn_delivery(state, callbacks)
 
 
 def _moot(state):
-  with state.lock:
-    del state.callbacks_and_connectivities[:]
+    with state.lock:
+        del state.callbacks_and_connectivities[:]
 
 
 def _subscribe(state, callback, try_to_connect):
-  with state.lock:
-    if not state.callbacks_and_connectivities and not state.polling:
-      def cancel_all_subscriptions(timeout):
-        _moot(state)
-      polling_thread = _common.CleanupThread(
-          cancel_all_subscriptions, target=_poll_connectivity,
-          args=(state, state.channel, bool(try_to_connect)))
-      polling_thread.start()
-      state.polling = True
-      state.callbacks_and_connectivities.append([callback, None])
-    elif not state.delivering and state.connectivity is not None:
-      _spawn_delivery(state, (callback,))
-      state.try_to_connect |= bool(try_to_connect)
-      state.callbacks_and_connectivities.append(
-          [callback, state.connectivity])
-    else:
-      state.try_to_connect |= bool(try_to_connect)
-      state.callbacks_and_connectivities.append([callback, None])
+    with state.lock:
+        if not state.callbacks_and_connectivities and not state.polling:
+
+            def cancel_all_subscriptions(timeout):
+                _moot(state)
+
+            polling_thread = _common.CleanupThread(
+                cancel_all_subscriptions,
+                target=_poll_connectivity,
+                args=(state, state.channel, bool(try_to_connect)))
+            polling_thread.start()
+            state.polling = True
+            state.callbacks_and_connectivities.append([callback, None])
+        elif not state.delivering and state.connectivity is not None:
+            _spawn_delivery(state, (callback,))
+            state.try_to_connect |= bool(try_to_connect)
+            state.callbacks_and_connectivities.append(
+                [callback, state.connectivity])
+        else:
+            state.try_to_connect |= bool(try_to_connect)
+            state.callbacks_and_connectivities.append([callback, None])
 
 
 def _unsubscribe(state, callback):
-  with state.lock:
-    for index, (subscribed_callback, unused_connectivity) in enumerate(
-        state.callbacks_and_connectivities):
-      if callback == subscribed_callback:
-        state.callbacks_and_connectivities.pop(index)
-        break
+    with state.lock:
+        for index, (subscribed_callback, unused_connectivity
+                   ) in enumerate(state.callbacks_and_connectivities):
+            if callback == subscribed_callback:
+                state.callbacks_and_connectivities.pop(index)
+                break
 
 
 def _options(options):
-  return list(options) + [
-      (cygrpc.ChannelArgKey.primary_user_agent_string, _USER_AGENT)]
+    return list(options) + [
+        (cygrpc.ChannelArgKey.primary_user_agent_string, _USER_AGENT)
+    ]
 
 
 class Channel(grpc.Channel):
+    """A cygrpc.Channel-backed implementation of grpc.Channel."""
 
-  def __init__(self, target, options, credentials):
-    """Constructor.
+    def __init__(self, target, options, credentials):
+        """Constructor.
 
     Args:
       target: The target to which to connect.
       options: Configuration options for the channel.
       credentials: A cygrpc.ChannelCredentials or None.
     """
-    self._channel = cygrpc.Channel(
-        _common.encode(target), _common.channel_args(_options(options)),
-        credentials)
-    self._call_state = _ChannelCallState(self._channel)
-    self._connectivity_state = _ChannelConnectivityState(self._channel)
-
-  def subscribe(self, callback, try_to_connect=None):
-    _subscribe(self._connectivity_state, callback, try_to_connect)
-
-  def unsubscribe(self, callback):
-    _unsubscribe(self._connectivity_state, callback)
-
-  def unary_unary(
-      self, method, request_serializer=None, response_deserializer=None):
-    return _UnaryUnaryMultiCallable(
-        self._channel, _create_channel_managed_call(self._call_state),
-        _common.encode(method), request_serializer, response_deserializer)
-
-  def unary_stream(
-      self, method, request_serializer=None, response_deserializer=None):
-    return _UnaryStreamMultiCallable(
-        self._channel, _create_channel_managed_call(self._call_state),
-        _common.encode(method), request_serializer, response_deserializer)
-
-  def stream_unary(
-      self, method, request_serializer=None, response_deserializer=None):
-    return _StreamUnaryMultiCallable(
-        self._channel, _create_channel_managed_call(self._call_state),
-        _common.encode(method), request_serializer, response_deserializer)
-
-  def stream_stream(
-      self, method, request_serializer=None, response_deserializer=None):
-    return _StreamStreamMultiCallable(
-        self._channel, _create_channel_managed_call(self._call_state),
-        _common.encode(method), request_serializer, response_deserializer)
-
-  def __del__(self):
-    _moot(self._connectivity_state)
+        self._channel = cygrpc.Channel(
+            _common.encode(target),
+            _common.channel_args(_options(options)), credentials)
+        self._call_state = _ChannelCallState(self._channel)
+        self._connectivity_state = _ChannelConnectivityState(self._channel)
+
+    def subscribe(self, callback, try_to_connect=None):
+        _subscribe(self._connectivity_state, callback, try_to_connect)
+
+    def unsubscribe(self, callback):
+        _unsubscribe(self._connectivity_state, callback)
+
+    def unary_unary(self,
+                    method,
+                    request_serializer=None,
+                    response_deserializer=None):
+        return _UnaryUnaryMultiCallable(
+            self._channel,
+            _channel_managed_call_management(self._call_state),
+            _common.encode(method), request_serializer, response_deserializer)
+
+    def unary_stream(self,
+                     method,
+                     request_serializer=None,
+                     response_deserializer=None):
+        return _UnaryStreamMultiCallable(
+            self._channel,
+            _channel_managed_call_management(self._call_state),
+            _common.encode(method), request_serializer, response_deserializer)
+
+    def stream_unary(self,
+                     method,
+                     request_serializer=None,
+                     response_deserializer=None):
+        return _StreamUnaryMultiCallable(
+            self._channel,
+            _channel_managed_call_management(self._call_state),
+            _common.encode(method), request_serializer, response_deserializer)
+
+    def stream_stream(self,
+                      method,
+                      request_serializer=None,
+                      response_deserializer=None):
+        return _StreamStreamMultiCallable(
+            self._channel,
+            _channel_managed_call_management(self._call_state),
+            _common.encode(method), request_serializer, response_deserializer)
+
+    def __del__(self):
+        _moot(self._connectivity_state)
diff --git a/src/python/grpcio/grpc/_common.py b/src/python/grpcio/grpc/_common.py
index cc0984c8c63b69176837ec5c9d6103d80c6019a5..7ef2571379ba2f8ca35f4b2ee28ee03075159db3 100644
--- a/src/python/grpcio/grpc/_common.py
+++ b/src/python/grpcio/grpc/_common.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Shared implementation."""
 
 import logging
@@ -45,9 +44,8 @@ CYGRPC_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY = {
     cygrpc.ConnectivityState.connecting: grpc.ChannelConnectivity.CONNECTING,
     cygrpc.ConnectivityState.ready: grpc.ChannelConnectivity.READY,
     cygrpc.ConnectivityState.transient_failure:
-        grpc.ChannelConnectivity.TRANSIENT_FAILURE,
-    cygrpc.ConnectivityState.shutdown:
-        grpc.ChannelConnectivity.SHUTDOWN,
+    grpc.ChannelConnectivity.TRANSIENT_FAILURE,
+    cygrpc.ConnectivityState.shutdown: grpc.ChannelConnectivity.SHUTDOWN,
 }
 
 CYGRPC_STATUS_CODE_TO_STATUS_CODE = {
@@ -77,83 +75,88 @@ STATUS_CODE_TO_CYGRPC_STATUS_CODE = {
 
 
 def encode(s):
-  if isinstance(s, bytes):
-    return s
-  else:
-    return s.encode('ascii')
+    if isinstance(s, bytes):
+        return s
+    else:
+        return s.encode('ascii')
 
 
 def decode(b):
-  if isinstance(b, str):
-    return b
-  else:
-    try:
-      return b.decode('utf8')
-    except UnicodeDecodeError:
-      logging.exception('Invalid encoding on {}'.format(b))
-      return b.decode('latin1')
+    if isinstance(b, str):
+        return b
+    else:
+        try:
+            return b.decode('utf8')
+        except UnicodeDecodeError:
+            logging.exception('Invalid encoding on {}'.format(b))
+            return b.decode('latin1')
 
 
 def channel_args(options):
-  channel_args = []
-  for key, value in options:
-    if isinstance(value, six.string_types):
-      channel_args.append(cygrpc.ChannelArg(encode(key), encode(value)))
-    else:
-      channel_args.append(cygrpc.ChannelArg(encode(key), value))
-  return cygrpc.ChannelArgs(channel_args)
+    channel_args = []
+    for key, value in options:
+        if isinstance(value, six.string_types):
+            channel_args.append(cygrpc.ChannelArg(encode(key), encode(value)))
+        else:
+            channel_args.append(cygrpc.ChannelArg(encode(key), value))
+    return cygrpc.ChannelArgs(channel_args)
 
 
 def cygrpc_metadata(application_metadata):
-  return _EMPTY_METADATA if application_metadata is None else cygrpc.Metadata(
-      cygrpc.Metadatum(encode(key), encode(value))
-      for key, value in application_metadata)
+    return _EMPTY_METADATA if application_metadata is None else cygrpc.Metadata(
+        cygrpc.Metadatum(encode(key), encode(value))
+        for key, value in application_metadata)
 
 
 def application_metadata(cygrpc_metadata):
-  if cygrpc_metadata is None:
-    return ()
-  else:
-    return tuple(
-        (decode(key), value if key[-4:] == b'-bin' else decode(value))
-        for key, value in cygrpc_metadata)
+    if cygrpc_metadata is None:
+        return ()
+    else:
+        return tuple((decode(key), value
+                      if key[-4:] == b'-bin' else decode(value))
+                     for key, value in cygrpc_metadata)
 
 
 def _transform(message, transformer, exception_message):
-  if transformer is None:
-    return message
-  else:
-    try:
-      return transformer(message)
-    except Exception:  # pylint: disable=broad-except
-      logging.exception(exception_message)
-      return None
+    if transformer is None:
+        return message
+    else:
+        try:
+            return transformer(message)
+        except Exception:  # pylint: disable=broad-except
+            logging.exception(exception_message)
+            return None
 
 
 def serialize(message, serializer):
-  return _transform(message, serializer, 'Exception serializing message!')
+    return _transform(message, serializer, 'Exception serializing message!')
 
 
 def deserialize(serialized_message, deserializer):
-  return _transform(serialized_message, deserializer,
-                    'Exception deserializing message!')
+    return _transform(serialized_message, deserializer,
+                      'Exception deserializing message!')
 
 
 def fully_qualified_method(group, method):
-  return '/{}/{}'.format(group, method)
+    return '/{}/{}'.format(group, method)
 
 
 class CleanupThread(threading.Thread):
-  """A threading.Thread subclass supporting custom behavior on join().
+    """A threading.Thread subclass supporting custom behavior on join().
 
   On Python Interpreter exit, Python will attempt to join outstanding threads
   prior to garbage collection.  We may need to do additional cleanup, and
   we accomplish this by overriding the join() method.
   """
 
-  def __init__(self, behavior, group=None, target=None, name=None,
-               args=(), kwargs={}):
-    """Constructor.
+    def __init__(self,
+                 behavior,
+                 group=None,
+                 target=None,
+                 name=None,
+                 args=(),
+                 kwargs={}):
+        """Constructor.
 
     Args:
       behavior (function): Function called on join() with a single
@@ -169,15 +172,15 @@ class CleanupThread(threading.Thread):
       kwargs (dict[str,object]): A dictionary of keyword arguments to
            pass to `target`.
     """
-    super(CleanupThread, self).__init__(group=group, target=target,
-                                        name=name, args=args, kwargs=kwargs)
-    self._behavior = behavior
-
-  def join(self, timeout=None):
-    start_time = time.time()
-    self._behavior(timeout)
-    end_time = time.time()
-    if timeout is not None:
-      timeout -= end_time - start_time
-      timeout = max(timeout, 0)
-    super(CleanupThread, self).join(timeout)
+        super(CleanupThread, self).__init__(
+            group=group, target=target, name=name, args=args, kwargs=kwargs)
+        self._behavior = behavior
+
+    def join(self, timeout=None):
+        start_time = time.time()
+        self._behavior(timeout)
+        end_time = time.time()
+        if timeout is not None:
+            timeout -= end_time - start_time
+            timeout = max(timeout, 0)
+        super(CleanupThread, self).join(timeout)
diff --git a/src/python/grpcio/grpc/_credential_composition.py b/src/python/grpcio/grpc/_credential_composition.py
index 9cb5508e27cb65cfd8135d5d0bed5d6a7e12f606..bdf017baa568cd72ea394e4c3ce48666ab460cc5 100644
--- a/src/python/grpcio/grpc/_credential_composition.py
+++ b/src/python/grpcio/grpc/_credential_composition.py
@@ -31,18 +31,18 @@ from grpc._cython import cygrpc
 
 
 def _call(call_credentialses):
-  call_credentials_iterator = iter(call_credentialses)
-  composition = next(call_credentials_iterator)
-  for additional_call_credentials in call_credentials_iterator:
-    composition = cygrpc.call_credentials_composite(
-        composition, additional_call_credentials)
-  return composition
+    call_credentials_iterator = iter(call_credentialses)
+    composition = next(call_credentials_iterator)
+    for additional_call_credentials in call_credentials_iterator:
+        composition = cygrpc.call_credentials_composite(
+            composition, additional_call_credentials)
+    return composition
 
 
 def call(call_credentialses):
-  return _call(call_credentialses)
+    return _call(call_credentialses)
 
 
 def channel(channel_credentials, call_credentialses):
-  return cygrpc.channel_credentials_composite(
-      channel_credentials, _call(call_credentialses))
+    return cygrpc.channel_credentials_composite(channel_credentials,
+                                                _call(call_credentialses))
diff --git a/src/python/grpcio/grpc/_plugin_wrapping.py b/src/python/grpcio/grpc/_plugin_wrapping.py
index 7cb5218c22bd8bb8895f2febdc758605c6484cb4..bb9a42f3ffe72ad5b1b6d2b40f7535841abb60ba 100644
--- a/src/python/grpcio/grpc/_plugin_wrapping.py
+++ b/src/python/grpcio/grpc/_plugin_wrapping.py
@@ -36,82 +36,82 @@ from grpc._cython import cygrpc
 
 
 class AuthMetadataContext(
-    collections.namedtuple(
-        'AuthMetadataContext', ('service_url', 'method_name',)),
-    grpc.AuthMetadataContext):
-  pass
+        collections.namedtuple('AuthMetadataContext', (
+            'service_url',
+            'method_name',)), grpc.AuthMetadataContext):
+    pass
 
 
 class AuthMetadataPluginCallback(grpc.AuthMetadataContext):
 
-  def __init__(self, callback):
-    self._callback = callback
+    def __init__(self, callback):
+        self._callback = callback
 
-  def __call__(self, metadata, error):
-    self._callback(metadata, error)
+    def __call__(self, metadata, error):
+        self._callback(metadata, error)
 
 
 class _WrappedCygrpcCallback(object):
 
-  def __init__(self, cygrpc_callback):
-    self.is_called = False
-    self.error = None
-    self.is_called_lock = threading.Lock()
-    self.cygrpc_callback = cygrpc_callback
-
-  def _invoke_failure(self, error):
-    # TODO(atash) translate different Exception superclasses into different
-    # status codes.
-    self.cygrpc_callback(
-        _common.EMPTY_METADATA, cygrpc.StatusCode.internal,
-        _common.encode(str(error)))
-
-  def _invoke_success(self, metadata):
-    try:
-      cygrpc_metadata = _common.cygrpc_metadata(metadata)
-    except Exception as error:
-      self._invoke_failure(error)
-      return
-    self.cygrpc_callback(cygrpc_metadata, cygrpc.StatusCode.ok, b'')
-
-  def __call__(self, metadata, error):
-    with self.is_called_lock:
-      if self.is_called:
-        raise RuntimeError('callback should only ever be invoked once')
-      if self.error:
-        self._invoke_failure(self.error)
-        return
-      self.is_called = True
-    if error is None:
-      self._invoke_success(metadata)
-    else:
-      self._invoke_failure(error)
-
-  def notify_failure(self, error):
-    with self.is_called_lock:
-      if not self.is_called:
-        self.error = error
+    def __init__(self, cygrpc_callback):
+        self.is_called = False
+        self.error = None
+        self.is_called_lock = threading.Lock()
+        self.cygrpc_callback = cygrpc_callback
+
+    def _invoke_failure(self, error):
+        # TODO(atash) translate different Exception superclasses into different
+        # status codes.
+        self.cygrpc_callback(_common.EMPTY_METADATA, cygrpc.StatusCode.internal,
+                             _common.encode(str(error)))
+
+    def _invoke_success(self, metadata):
+        try:
+            cygrpc_metadata = _common.cygrpc_metadata(metadata)
+        except Exception as error:
+            self._invoke_failure(error)
+            return
+        self.cygrpc_callback(cygrpc_metadata, cygrpc.StatusCode.ok, b'')
+
+    def __call__(self, metadata, error):
+        with self.is_called_lock:
+            if self.is_called:
+                raise RuntimeError('callback should only ever be invoked once')
+            if self.error:
+                self._invoke_failure(self.error)
+                return
+            self.is_called = True
+        if error is None:
+            self._invoke_success(metadata)
+        else:
+            self._invoke_failure(error)
+
+    def notify_failure(self, error):
+        with self.is_called_lock:
+            if not self.is_called:
+                self.error = error
 
 
 class _WrappedPlugin(object):
 
-  def __init__(self, plugin):
-    self.plugin = plugin
+    def __init__(self, plugin):
+        self.plugin = plugin
 
-  def __call__(self, context, cygrpc_callback):
-    wrapped_cygrpc_callback = _WrappedCygrpcCallback(cygrpc_callback)
-    wrapped_context = AuthMetadataContext(
-        _common.decode(context.service_url), _common.decode(context.method_name))
-    try:
-      self.plugin(
-          wrapped_context, AuthMetadataPluginCallback(wrapped_cygrpc_callback))
-    except Exception as error:
-      wrapped_cygrpc_callback.notify_failure(error)
-      raise
+    def __call__(self, context, cygrpc_callback):
+        wrapped_cygrpc_callback = _WrappedCygrpcCallback(cygrpc_callback)
+        wrapped_context = AuthMetadataContext(
+            _common.decode(context.service_url),
+            _common.decode(context.method_name))
+        try:
+            self.plugin(wrapped_context,
+                        AuthMetadataPluginCallback(wrapped_cygrpc_callback))
+        except Exception as error:
+            wrapped_cygrpc_callback.notify_failure(error)
+            raise
 
 
 def call_credentials_metadata_plugin(plugin, name):
-  """
+    """
   Args:
     plugin: A callable accepting a grpc.AuthMetadataContext
       object and a callback (itself accepting a list of metadata key/value
@@ -119,5 +119,6 @@ def call_credentials_metadata_plugin(plugin, name):
       called, but need not be called in plugin's invocation.
       plugin's invocation must be non-blocking.
   """
-  return cygrpc.call_credentials_metadata_plugin(
-      cygrpc.CredentialsMetadataPlugin(_WrappedPlugin(plugin), _common.encode(name)))
+    return cygrpc.call_credentials_metadata_plugin(
+        cygrpc.CredentialsMetadataPlugin(
+            _WrappedPlugin(plugin), _common.encode(name)))
diff --git a/src/python/grpcio/grpc/_server.py b/src/python/grpcio/grpc/_server.py
index 5223712dfa7d47d6ce69b9612565bc4615ed393d..158cdf8b0e688361e0f4a40e2d474f91fe267e7c 100644
--- a/src/python/grpcio/grpc/_server.py
+++ b/src/python/grpcio/grpc/_server.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Service-side implementation of gRPC Python."""
 
 import collections
@@ -64,692 +63,715 @@ _UNEXPECTED_EXIT_SERVER_GRACE = 1.0
 
 
 def _serialized_request(request_event):
-  return request_event.batch_operations[0].received_message.bytes()
+    return request_event.batch_operations[0].received_message.bytes()
 
 
 def _application_code(code):
-  cygrpc_code = _common.STATUS_CODE_TO_CYGRPC_STATUS_CODE.get(code)
-  return cygrpc.StatusCode.unknown if cygrpc_code is None else cygrpc_code
+    cygrpc_code = _common.STATUS_CODE_TO_CYGRPC_STATUS_CODE.get(code)
+    return cygrpc.StatusCode.unknown if cygrpc_code is None else cygrpc_code
 
 
 def _completion_code(state):
-  if state.code is None:
-    return cygrpc.StatusCode.ok
-  else:
-    return _application_code(state.code)
+    if state.code is None:
+        return cygrpc.StatusCode.ok
+    else:
+        return _application_code(state.code)
 
 
 def _abortion_code(state, code):
-  if state.code is None:
-    return code
-  else:
-    return _application_code(state.code)
+    if state.code is None:
+        return code
+    else:
+        return _application_code(state.code)
 
 
 def _details(state):
-  return b'' if state.details is None else state.details
+    return b'' if state.details is None else state.details
 
 
 class _HandlerCallDetails(
-    collections.namedtuple(
-        '_HandlerCallDetails', ('method', 'invocation_metadata',)),
-    grpc.HandlerCallDetails):
-  pass
+        collections.namedtuple('_HandlerCallDetails', (
+            'method',
+            'invocation_metadata',)), grpc.HandlerCallDetails):
+    pass
 
 
 class _RPCState(object):
 
-  def __init__(self):
-    self.condition = threading.Condition()
-    self.due = set()
-    self.request = None
-    self.client = _OPEN
-    self.initial_metadata_allowed = True
-    self.disable_next_compression = False
-    self.trailing_metadata = None
-    self.code = None
-    self.details = None
-    self.statused = False
-    self.rpc_errors = []
-    self.callbacks = []
+    def __init__(self):
+        self.condition = threading.Condition()
+        self.due = set()
+        self.request = None
+        self.client = _OPEN
+        self.initial_metadata_allowed = True
+        self.disable_next_compression = False
+        self.trailing_metadata = None
+        self.code = None
+        self.details = None
+        self.statused = False
+        self.rpc_errors = []
+        self.callbacks = []
 
 
 def _raise_rpc_error(state):
-  rpc_error = grpc.RpcError()
-  state.rpc_errors.append(rpc_error)
-  raise rpc_error
+    rpc_error = grpc.RpcError()
+    state.rpc_errors.append(rpc_error)
+    raise rpc_error
 
 
 def _possibly_finish_call(state, token):
-  state.due.remove(token)
-  if (state.client is _CANCELLED or state.statused) and not state.due:
-    callbacks = state.callbacks
-    state.callbacks = None
-    return state, callbacks
-  else:
-    return None, ()
+    state.due.remove(token)
+    if (state.client is _CANCELLED or state.statused) and not state.due:
+        callbacks = state.callbacks
+        state.callbacks = None
+        return state, callbacks
+    else:
+        return None, ()
 
 
 def _send_status_from_server(state, token):
-  def send_status_from_server(unused_send_status_from_server_event):
-    with state.condition:
-      return _possibly_finish_call(state, token)
-  return send_status_from_server
+
+    def send_status_from_server(unused_send_status_from_server_event):
+        with state.condition:
+            return _possibly_finish_call(state, token)
+
+    return send_status_from_server
 
 
 def _abort(state, call, code, details):
-  if state.client is not _CANCELLED:
-    effective_code = _abortion_code(state, code)
-    effective_details = details if state.details is None else state.details
-    if state.initial_metadata_allowed:
-      operations = (
-          cygrpc.operation_send_initial_metadata(
-              _EMPTY_METADATA, _EMPTY_FLAGS),
-          cygrpc.operation_send_status_from_server(
-              _common.cygrpc_metadata(state.trailing_metadata), effective_code,
-              effective_details, _EMPTY_FLAGS),
-      )
-      token = _SEND_INITIAL_METADATA_AND_SEND_STATUS_FROM_SERVER_TOKEN
-    else:
-      operations = (
-          cygrpc.operation_send_status_from_server(
-              _common.cygrpc_metadata(state.trailing_metadata), effective_code,
-              effective_details, _EMPTY_FLAGS),
-      )
-      token = _SEND_STATUS_FROM_SERVER_TOKEN
-    call.start_server_batch(
-        cygrpc.Operations(operations),
-        _send_status_from_server(state, token))
-    state.statused = True
-    state.due.add(token)
+    if state.client is not _CANCELLED:
+        effective_code = _abortion_code(state, code)
+        effective_details = details if state.details is None else state.details
+        if state.initial_metadata_allowed:
+            operations = (
+                cygrpc.operation_send_initial_metadata(_EMPTY_METADATA,
+                                                       _EMPTY_FLAGS),
+                cygrpc.operation_send_status_from_server(
+                    _common.cygrpc_metadata(state.trailing_metadata),
+                    effective_code, effective_details, _EMPTY_FLAGS),)
+            token = _SEND_INITIAL_METADATA_AND_SEND_STATUS_FROM_SERVER_TOKEN
+        else:
+            operations = (cygrpc.operation_send_status_from_server(
+                _common.cygrpc_metadata(state.trailing_metadata),
+                effective_code, effective_details, _EMPTY_FLAGS),)
+            token = _SEND_STATUS_FROM_SERVER_TOKEN
+        call.start_server_batch(
+            cygrpc.Operations(operations),
+            _send_status_from_server(state, token))
+        state.statused = True
+        state.due.add(token)
 
 
 def _receive_close_on_server(state):
-  def receive_close_on_server(receive_close_on_server_event):
-    with state.condition:
-      if receive_close_on_server_event.batch_operations[0].received_cancelled:
-        state.client = _CANCELLED
-      elif state.client is _OPEN:
-        state.client = _CLOSED
-      state.condition.notify_all()
-      return _possibly_finish_call(state, _RECEIVE_CLOSE_ON_SERVER_TOKEN)
-  return receive_close_on_server
+
+    def receive_close_on_server(receive_close_on_server_event):
+        with state.condition:
+            if receive_close_on_server_event.batch_operations[
+                    0].received_cancelled:
+                state.client = _CANCELLED
+            elif state.client is _OPEN:
+                state.client = _CLOSED
+            state.condition.notify_all()
+            return _possibly_finish_call(state, _RECEIVE_CLOSE_ON_SERVER_TOKEN)
+
+    return receive_close_on_server
 
 
 def _receive_message(state, call, request_deserializer):
-  def receive_message(receive_message_event):
-    serialized_request = _serialized_request(receive_message_event)
-    if serialized_request is None:
-      with state.condition:
-        if state.client is _OPEN:
-          state.client = _CLOSED
-        state.condition.notify_all()
-        return _possibly_finish_call(state, _RECEIVE_MESSAGE_TOKEN)
-    else:
-      request = _common.deserialize(serialized_request, request_deserializer)
-      with state.condition:
-        if request is None:
-          _abort(
-              state, call, cygrpc.StatusCode.internal,
-              b'Exception deserializing request!')
+
+    def receive_message(receive_message_event):
+        serialized_request = _serialized_request(receive_message_event)
+        if serialized_request is None:
+            with state.condition:
+                if state.client is _OPEN:
+                    state.client = _CLOSED
+                state.condition.notify_all()
+                return _possibly_finish_call(state, _RECEIVE_MESSAGE_TOKEN)
         else:
-          state.request = request
-        state.condition.notify_all()
-        return _possibly_finish_call(state, _RECEIVE_MESSAGE_TOKEN)
-  return receive_message
+            request = _common.deserialize(serialized_request,
+                                          request_deserializer)
+            with state.condition:
+                if request is None:
+                    _abort(state, call, cygrpc.StatusCode.internal,
+                           b'Exception deserializing request!')
+                else:
+                    state.request = request
+                state.condition.notify_all()
+                return _possibly_finish_call(state, _RECEIVE_MESSAGE_TOKEN)
+
+    return receive_message
 
 
 def _send_initial_metadata(state):
-  def send_initial_metadata(unused_send_initial_metadata_event):
-    with state.condition:
-      return _possibly_finish_call(state, _SEND_INITIAL_METADATA_TOKEN)
-  return send_initial_metadata
+
+    def send_initial_metadata(unused_send_initial_metadata_event):
+        with state.condition:
+            return _possibly_finish_call(state, _SEND_INITIAL_METADATA_TOKEN)
+
+    return send_initial_metadata
 
 
 def _send_message(state, token):
-  def send_message(unused_send_message_event):
-    with state.condition:
-      state.condition.notify_all()
-      return _possibly_finish_call(state, token)
-  return send_message
+
+    def send_message(unused_send_message_event):
+        with state.condition:
+            state.condition.notify_all()
+            return _possibly_finish_call(state, token)
+
+    return send_message
 
 
 class _Context(grpc.ServicerContext):
 
-  def __init__(self, rpc_event, state, request_deserializer):
-    self._rpc_event = rpc_event
-    self._state = state
-    self._request_deserializer = request_deserializer
+    def __init__(self, rpc_event, state, request_deserializer):
+        self._rpc_event = rpc_event
+        self._state = state
+        self._request_deserializer = request_deserializer
 
-  def is_active(self):
-    with self._state.condition:
-      return self._state.client is not _CANCELLED and not self._state.statused
+    def is_active(self):
+        with self._state.condition:
+            return self._state.client is not _CANCELLED and not self._state.statused
 
-  def time_remaining(self):
-    return max(self._rpc_event.request_call_details.deadline - time.time(), 0)
+    def time_remaining(self):
+        return max(self._rpc_event.request_call_details.deadline - time.time(),
+                   0)
 
-  def cancel(self):
-    self._rpc_event.operation_call.cancel()
+    def cancel(self):
+        self._rpc_event.operation_call.cancel()
 
-  def add_callback(self, callback):
-    with self._state.condition:
-      if self._state.callbacks is None:
-        return False
-      else:
-        self._state.callbacks.append(callback)
-        return True
+    def add_callback(self, callback):
+        with self._state.condition:
+            if self._state.callbacks is None:
+                return False
+            else:
+                self._state.callbacks.append(callback)
+                return True
 
-  def disable_next_message_compression(self):
-    with self._state.condition:
-      self._state.disable_next_compression = True
-
-  def invocation_metadata(self):
-    return _common.application_metadata(self._rpc_event.request_metadata)
-
-  def peer(self):
-    return _common.decode(self._rpc_event.operation_call.peer())
-
-  def send_initial_metadata(self, initial_metadata):
-    with self._state.condition:
-      if self._state.client is _CANCELLED:
-        _raise_rpc_error(self._state)
-      else:
-        if self._state.initial_metadata_allowed:
-          operation = cygrpc.operation_send_initial_metadata(
-              _common.cygrpc_metadata(initial_metadata), _EMPTY_FLAGS)
-          self._rpc_event.operation_call.start_server_batch(
-              cygrpc.Operations((operation,)),
-              _send_initial_metadata(self._state))
-          self._state.initial_metadata_allowed = False
-          self._state.due.add(_SEND_INITIAL_METADATA_TOKEN)
-        else:
-          raise ValueError('Initial metadata no longer allowed!')
+    def disable_next_message_compression(self):
+        with self._state.condition:
+            self._state.disable_next_compression = True
 
-  def set_trailing_metadata(self, trailing_metadata):
-    with self._state.condition:
-      self._state.trailing_metadata = _common.cygrpc_metadata(
-          trailing_metadata)
+    def invocation_metadata(self):
+        return _common.application_metadata(self._rpc_event.request_metadata)
 
-  def set_code(self, code):
-    with self._state.condition:
-      self._state.code = code
+    def peer(self):
+        return _common.decode(self._rpc_event.operation_call.peer())
 
-  def set_details(self, details):
-    with self._state.condition:
-      self._state.details = _common.encode(details)
+    def send_initial_metadata(self, initial_metadata):
+        with self._state.condition:
+            if self._state.client is _CANCELLED:
+                _raise_rpc_error(self._state)
+            else:
+                if self._state.initial_metadata_allowed:
+                    operation = cygrpc.operation_send_initial_metadata(
+                        _common.cygrpc_metadata(initial_metadata), _EMPTY_FLAGS)
+                    self._rpc_event.operation_call.start_server_batch(
+                        cygrpc.Operations((operation,)),
+                        _send_initial_metadata(self._state))
+                    self._state.initial_metadata_allowed = False
+                    self._state.due.add(_SEND_INITIAL_METADATA_TOKEN)
+                else:
+                    raise ValueError('Initial metadata no longer allowed!')
+
+    def set_trailing_metadata(self, trailing_metadata):
+        with self._state.condition:
+            self._state.trailing_metadata = _common.cygrpc_metadata(
+                trailing_metadata)
+
+    def set_code(self, code):
+        with self._state.condition:
+            self._state.code = code
+
+    def set_details(self, details):
+        with self._state.condition:
+            self._state.details = _common.encode(details)
 
 
 class _RequestIterator(object):
 
-  def __init__(self, state, call, request_deserializer):
-    self._state = state
-    self._call = call
-    self._request_deserializer = request_deserializer
+    def __init__(self, state, call, request_deserializer):
+        self._state = state
+        self._call = call
+        self._request_deserializer = request_deserializer
 
-  def _raise_or_start_receive_message(self):
-    if self._state.client is _CANCELLED:
-      _raise_rpc_error(self._state)
-    elif self._state.client is _CLOSED or self._state.statused:
-      raise StopIteration()
-    else:
-      self._call.start_server_batch(
-          cygrpc.Operations((cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
-          _receive_message(self._state, self._call, self._request_deserializer))
-      self._state.due.add(_RECEIVE_MESSAGE_TOKEN)
-
-  def _look_for_request(self):
-    if self._state.client is _CANCELLED:
-      _raise_rpc_error(self._state)
-    elif (self._state.request is None and
-          _RECEIVE_MESSAGE_TOKEN not in self._state.due):
-      raise StopIteration()
-    else:
-      request = self._state.request
-      self._state.request = None
-      return request
+    def _raise_or_start_receive_message(self):
+        if self._state.client is _CANCELLED:
+            _raise_rpc_error(self._state)
+        elif self._state.client is _CLOSED or self._state.statused:
+            raise StopIteration()
+        else:
+            self._call.start_server_batch(
+                cygrpc.Operations(
+                    (cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
+                _receive_message(self._state, self._call,
+                                 self._request_deserializer))
+            self._state.due.add(_RECEIVE_MESSAGE_TOKEN)
+
+    def _look_for_request(self):
+        if self._state.client is _CANCELLED:
+            _raise_rpc_error(self._state)
+        elif (self._state.request is None and
+              _RECEIVE_MESSAGE_TOKEN not in self._state.due):
+            raise StopIteration()
+        else:
+            request = self._state.request
+            self._state.request = None
+            return request
 
-  def _next(self):
-    with self._state.condition:
-      self._raise_or_start_receive_message()
-      while True:
-        self._state.condition.wait()
-        request = self._look_for_request()
-        if request is not None:
-          return request
+    def _next(self):
+        with self._state.condition:
+            self._raise_or_start_receive_message()
+            while True:
+                self._state.condition.wait()
+                request = self._look_for_request()
+                if request is not None:
+                    return request
 
-  def __iter__(self):
-    return self
+    def __iter__(self):
+        return self
 
-  def __next__(self):
-    return self._next()
+    def __next__(self):
+        return self._next()
 
-  def next(self):
-    return self._next()
+    def next(self):
+        return self._next()
 
 
 def _unary_request(rpc_event, state, request_deserializer):
-  def unary_request():
-    with state.condition:
-      if state.client is _CANCELLED or state.statused:
-        return None
-      else:
-        start_server_batch_result = rpc_event.operation_call.start_server_batch(
-            cygrpc.Operations(
-                (cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
-            _receive_message(
-                state, rpc_event.operation_call, request_deserializer))
-        state.due.add(_RECEIVE_MESSAGE_TOKEN)
-        while True:
-          state.condition.wait()
-          if state.request is None:
-            if state.client is _CLOSED:
-              details = '"{}" requires exactly one request message.'.format(
-                  rpc_event.request_call_details.method)
-              _abort(
-                  state, rpc_event.operation_call,
-                  cygrpc.StatusCode.unimplemented, _common.encode(details))
-              return None
-            elif state.client is _CANCELLED:
-              return None
-          else:
-            request = state.request
-            state.request = None
-            return request
-  return unary_request
+
+    def unary_request():
+        with state.condition:
+            if state.client is _CANCELLED or state.statused:
+                return None
+            else:
+                start_server_batch_result = rpc_event.operation_call.start_server_batch(
+                    cygrpc.Operations(
+                        (cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
+                    _receive_message(state, rpc_event.operation_call,
+                                     request_deserializer))
+                state.due.add(_RECEIVE_MESSAGE_TOKEN)
+                while True:
+                    state.condition.wait()
+                    if state.request is None:
+                        if state.client is _CLOSED:
+                            details = '"{}" requires exactly one request message.'.format(
+                                rpc_event.request_call_details.method)
+                            _abort(state, rpc_event.operation_call,
+                                   cygrpc.StatusCode.unimplemented,
+                                   _common.encode(details))
+                            return None
+                        elif state.client is _CANCELLED:
+                            return None
+                    else:
+                        request = state.request
+                        state.request = None
+                        return request
+
+    return unary_request
 
 
 def _call_behavior(rpc_event, state, behavior, argument, request_deserializer):
-  context = _Context(rpc_event, state, request_deserializer)
-  try:
-    return behavior(argument, context), True
-  except Exception as e:  # pylint: disable=broad-except
-    with state.condition:
-      if e not in state.rpc_errors:
-        details = 'Exception calling application: {}'.format(e)
-        logging.exception(details)
-        _abort(state, rpc_event.operation_call,
-               cygrpc.StatusCode.unknown, _common.encode(details))
-    return None, False
+    context = _Context(rpc_event, state, request_deserializer)
+    try:
+        return behavior(argument, context), True
+    except Exception as e:  # pylint: disable=broad-except
+        with state.condition:
+            if e not in state.rpc_errors:
+                details = 'Exception calling application: {}'.format(e)
+                logging.exception(details)
+                _abort(state, rpc_event.operation_call,
+                       cygrpc.StatusCode.unknown, _common.encode(details))
+        return None, False
 
 
 def _take_response_from_response_iterator(rpc_event, state, response_iterator):
-  try:
-    return next(response_iterator), True
-  except StopIteration:
-    return None, True
-  except Exception as e:  # pylint: disable=broad-except
-    with state.condition:
-      if e not in state.rpc_errors:
-        details = 'Exception iterating responses: {}'.format(e)
-        logging.exception(details)
-        _abort(state, rpc_event.operation_call,
-               cygrpc.StatusCode.unknown, _common.encode(details))
-    return None, False
+    try:
+        return next(response_iterator), True
+    except StopIteration:
+        return None, True
+    except Exception as e:  # pylint: disable=broad-except
+        with state.condition:
+            if e not in state.rpc_errors:
+                details = 'Exception iterating responses: {}'.format(e)
+                logging.exception(details)
+                _abort(state, rpc_event.operation_call,
+                       cygrpc.StatusCode.unknown, _common.encode(details))
+        return None, False
 
 
 def _serialize_response(rpc_event, state, response, response_serializer):
-  serialized_response = _common.serialize(response, response_serializer)
-  if serialized_response is None:
-    with state.condition:
-      _abort(
-          state, rpc_event.operation_call, cygrpc.StatusCode.internal,
-          b'Failed to serialize response!')
-    return None
-  else:
-    return serialized_response
+    serialized_response = _common.serialize(response, response_serializer)
+    if serialized_response is None:
+        with state.condition:
+            _abort(state, rpc_event.operation_call, cygrpc.StatusCode.internal,
+                   b'Failed to serialize response!')
+        return None
+    else:
+        return serialized_response
 
 
 def _send_response(rpc_event, state, serialized_response):
-  with state.condition:
-    if state.client is _CANCELLED or state.statused:
-      return False
-    else:
-      if state.initial_metadata_allowed:
-        operations = (
-            cygrpc.operation_send_initial_metadata(
-                _EMPTY_METADATA, _EMPTY_FLAGS),
-            cygrpc.operation_send_message(serialized_response, _EMPTY_FLAGS),
-        )
-        state.initial_metadata_allowed = False
-        token = _SEND_INITIAL_METADATA_AND_SEND_MESSAGE_TOKEN
-      else:
-        operations = (
-            cygrpc.operation_send_message(serialized_response, _EMPTY_FLAGS),
-        )
-        token = _SEND_MESSAGE_TOKEN
-      rpc_event.operation_call.start_server_batch(
-          cygrpc.Operations(operations), _send_message(state, token))
-      state.due.add(token)
-      while True:
-        state.condition.wait()
-        if token not in state.due:
-          return state.client is not _CANCELLED and not state.statused
+    with state.condition:
+        if state.client is _CANCELLED or state.statused:
+            return False
+        else:
+            if state.initial_metadata_allowed:
+                operations = (
+                    cygrpc.operation_send_initial_metadata(_EMPTY_METADATA,
+                                                           _EMPTY_FLAGS),
+                    cygrpc.operation_send_message(serialized_response,
+                                                  _EMPTY_FLAGS),)
+                state.initial_metadata_allowed = False
+                token = _SEND_INITIAL_METADATA_AND_SEND_MESSAGE_TOKEN
+            else:
+                operations = (cygrpc.operation_send_message(serialized_response,
+                                                            _EMPTY_FLAGS),)
+                token = _SEND_MESSAGE_TOKEN
+            rpc_event.operation_call.start_server_batch(
+                cygrpc.Operations(operations), _send_message(state, token))
+            state.due.add(token)
+            while True:
+                state.condition.wait()
+                if token not in state.due:
+                    return state.client is not _CANCELLED and not state.statused
 
 
 def _status(rpc_event, state, serialized_response):
-  with state.condition:
-    if state.client is not _CANCELLED:
-      trailing_metadata = _common.cygrpc_metadata(state.trailing_metadata)
-      code = _completion_code(state)
-      details = _details(state)
-      operations = [
-          cygrpc.operation_send_status_from_server(
-              trailing_metadata, code, details, _EMPTY_FLAGS),
-      ]
-      if state.initial_metadata_allowed:
-        operations.append(
-            cygrpc.operation_send_initial_metadata(
-                _EMPTY_METADATA, _EMPTY_FLAGS))
-      if serialized_response is not None:
-        operations.append(cygrpc.operation_send_message(
-            serialized_response, _EMPTY_FLAGS))
-      rpc_event.operation_call.start_server_batch(
-          cygrpc.Operations(operations),
-          _send_status_from_server(state, _SEND_STATUS_FROM_SERVER_TOKEN))
-      state.statused = True
-      state.due.add(_SEND_STATUS_FROM_SERVER_TOKEN)
-
-
-def _unary_response_in_pool(
-    rpc_event, state, behavior, argument_thunk, request_deserializer,
-    response_serializer):
-  argument = argument_thunk()
-  if argument is not None:
-    response, proceed = _call_behavior(
-        rpc_event, state, behavior, argument, request_deserializer)
-    if proceed:
-      serialized_response = _serialize_response(
-          rpc_event, state, response, response_serializer)
-      if serialized_response is not None:
-        _status(rpc_event, state, serialized_response)
-
-
-def _stream_response_in_pool(
-    rpc_event, state, behavior, argument_thunk, request_deserializer,
-    response_serializer):
-  argument = argument_thunk()
-  if argument is not None:
-    response_iterator, proceed = _call_behavior(
-        rpc_event, state, behavior, argument, request_deserializer)
-    if proceed:
-      while True:
-        response, proceed = _take_response_from_response_iterator(
-            rpc_event, state, response_iterator)
+    with state.condition:
+        if state.client is not _CANCELLED:
+            trailing_metadata = _common.cygrpc_metadata(state.trailing_metadata)
+            code = _completion_code(state)
+            details = _details(state)
+            operations = [
+                cygrpc.operation_send_status_from_server(
+                    trailing_metadata, code, details, _EMPTY_FLAGS),
+            ]
+            if state.initial_metadata_allowed:
+                operations.append(
+                    cygrpc.operation_send_initial_metadata(_EMPTY_METADATA,
+                                                           _EMPTY_FLAGS))
+            if serialized_response is not None:
+                operations.append(
+                    cygrpc.operation_send_message(serialized_response,
+                                                  _EMPTY_FLAGS))
+            rpc_event.operation_call.start_server_batch(
+                cygrpc.Operations(operations),
+                _send_status_from_server(state, _SEND_STATUS_FROM_SERVER_TOKEN))
+            state.statused = True
+            state.due.add(_SEND_STATUS_FROM_SERVER_TOKEN)
+
+
+def _unary_response_in_pool(rpc_event, state, behavior, argument_thunk,
+                            request_deserializer, response_serializer):
+    argument = argument_thunk()
+    if argument is not None:
+        response, proceed = _call_behavior(rpc_event, state, behavior, argument,
+                                           request_deserializer)
         if proceed:
-          if response is None:
-            _status(rpc_event, state, None)
-            break
-          else:
             serialized_response = _serialize_response(
                 rpc_event, state, response, response_serializer)
             if serialized_response is not None:
-              proceed = _send_response(rpc_event, state, serialized_response)
-              if not proceed:
-                break
-            else:
-              break
-        else:
-          break
+                _status(rpc_event, state, serialized_response)
+
+
+def _stream_response_in_pool(rpc_event, state, behavior, argument_thunk,
+                             request_deserializer, response_serializer):
+    argument = argument_thunk()
+    if argument is not None:
+        response_iterator, proceed = _call_behavior(
+            rpc_event, state, behavior, argument, request_deserializer)
+        if proceed:
+            while True:
+                response, proceed = _take_response_from_response_iterator(
+                    rpc_event, state, response_iterator)
+                if proceed:
+                    if response is None:
+                        _status(rpc_event, state, None)
+                        break
+                    else:
+                        serialized_response = _serialize_response(
+                            rpc_event, state, response, response_serializer)
+                        if serialized_response is not None:
+                            proceed = _send_response(rpc_event, state,
+                                                     serialized_response)
+                            if not proceed:
+                                break
+                        else:
+                            break
+                else:
+                    break
 
 
 def _handle_unary_unary(rpc_event, state, method_handler, thread_pool):
-  unary_request = _unary_request(
-      rpc_event, state, method_handler.request_deserializer)
-  thread_pool.submit(
-      _unary_response_in_pool, rpc_event, state, method_handler.unary_unary,
-      unary_request, method_handler.request_deserializer,
-      method_handler.response_serializer)
+    unary_request = _unary_request(rpc_event, state,
+                                   method_handler.request_deserializer)
+    thread_pool.submit(_unary_response_in_pool, rpc_event, state,
+                       method_handler.unary_unary, unary_request,
+                       method_handler.request_deserializer,
+                       method_handler.response_serializer)
 
 
 def _handle_unary_stream(rpc_event, state, method_handler, thread_pool):
-  unary_request = _unary_request(
-      rpc_event, state, method_handler.request_deserializer)
-  thread_pool.submit(
-      _stream_response_in_pool, rpc_event, state, method_handler.unary_stream,
-      unary_request, method_handler.request_deserializer,
-      method_handler.response_serializer)
+    unary_request = _unary_request(rpc_event, state,
+                                   method_handler.request_deserializer)
+    thread_pool.submit(_stream_response_in_pool, rpc_event, state,
+                       method_handler.unary_stream, unary_request,
+                       method_handler.request_deserializer,
+                       method_handler.response_serializer)
 
 
 def _handle_stream_unary(rpc_event, state, method_handler, thread_pool):
-  request_iterator = _RequestIterator(
-      state, rpc_event.operation_call, method_handler.request_deserializer)
-  thread_pool.submit(
-      _unary_response_in_pool, rpc_event, state, method_handler.stream_unary,
-      lambda: request_iterator, method_handler.request_deserializer,
-      method_handler.response_serializer)
+    request_iterator = _RequestIterator(state, rpc_event.operation_call,
+                                        method_handler.request_deserializer)
+    thread_pool.submit(_unary_response_in_pool, rpc_event, state,
+                       method_handler.stream_unary, lambda: request_iterator,
+                       method_handler.request_deserializer,
+                       method_handler.response_serializer)
 
 
 def _handle_stream_stream(rpc_event, state, method_handler, thread_pool):
-  request_iterator = _RequestIterator(
-      state, rpc_event.operation_call, method_handler.request_deserializer)
-  thread_pool.submit(
-      _stream_response_in_pool, rpc_event, state, method_handler.stream_stream,
-      lambda: request_iterator, method_handler.request_deserializer,
-      method_handler.response_serializer)
+    request_iterator = _RequestIterator(state, rpc_event.operation_call,
+                                        method_handler.request_deserializer)
+    thread_pool.submit(_stream_response_in_pool, rpc_event, state,
+                       method_handler.stream_stream, lambda: request_iterator,
+                       method_handler.request_deserializer,
+                       method_handler.response_serializer)
 
 
 def _find_method_handler(rpc_event, generic_handlers):
-  for generic_handler in generic_handlers:
-    method_handler = generic_handler.service(
-        _HandlerCallDetails(
-            _common.decode(rpc_event.request_call_details.method),
-            rpc_event.request_metadata))
-    if method_handler is not None:
-      return method_handler
-  else:
-    return None
+    for generic_handler in generic_handlers:
+        method_handler = generic_handler.service(
+            _HandlerCallDetails(
+                _common.decode(rpc_event.request_call_details.method),
+                rpc_event.request_metadata))
+        if method_handler is not None:
+            return method_handler
+    else:
+        return None
 
 
 def _handle_unrecognized_method(rpc_event):
-  operations = (
-      cygrpc.operation_send_initial_metadata(_EMPTY_METADATA, _EMPTY_FLAGS),
-      cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),
-      cygrpc.operation_send_status_from_server(
-          _EMPTY_METADATA, cygrpc.StatusCode.unimplemented,
-          b'Method not found!', _EMPTY_FLAGS),
-  )
-  rpc_state = _RPCState()
-  rpc_event.operation_call.start_server_batch(
-      operations, lambda ignored_event: (rpc_state, (),))
-  return rpc_state
+    operations = (
+        cygrpc.operation_send_initial_metadata(_EMPTY_METADATA, _EMPTY_FLAGS),
+        cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),
+        cygrpc.operation_send_status_from_server(
+            _EMPTY_METADATA, cygrpc.StatusCode.unimplemented,
+            b'Method not found!', _EMPTY_FLAGS),)
+    rpc_state = _RPCState()
+    rpc_event.operation_call.start_server_batch(operations,
+                                                lambda ignored_event: (
+                                                    rpc_state,
+                                                    (),))
+    return rpc_state
 
 
 def _handle_with_method_handler(rpc_event, method_handler, thread_pool):
-  state = _RPCState()
-  with state.condition:
-    rpc_event.operation_call.start_server_batch(
-        cygrpc.Operations(
-            (cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),)),
-        _receive_close_on_server(state))
-    state.due.add(_RECEIVE_CLOSE_ON_SERVER_TOKEN)
-    if method_handler.request_streaming:
-      if method_handler.response_streaming:
-        _handle_stream_stream(rpc_event, state, method_handler, thread_pool)
-      else:
-        _handle_stream_unary(rpc_event, state, method_handler, thread_pool)
-    else:
-      if method_handler.response_streaming:
-        _handle_unary_stream(rpc_event, state, method_handler, thread_pool)
-      else:
-        _handle_unary_unary(rpc_event, state, method_handler, thread_pool)
-    return state
+    state = _RPCState()
+    with state.condition:
+        rpc_event.operation_call.start_server_batch(
+            cygrpc.Operations(
+                (cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),)),
+            _receive_close_on_server(state))
+        state.due.add(_RECEIVE_CLOSE_ON_SERVER_TOKEN)
+        if method_handler.request_streaming:
+            if method_handler.response_streaming:
+                _handle_stream_stream(rpc_event, state, method_handler,
+                                      thread_pool)
+            else:
+                _handle_stream_unary(rpc_event, state, method_handler,
+                                     thread_pool)
+        else:
+            if method_handler.response_streaming:
+                _handle_unary_stream(rpc_event, state, method_handler,
+                                     thread_pool)
+            else:
+                _handle_unary_unary(rpc_event, state, method_handler,
+                                    thread_pool)
+        return state
 
 
 def _handle_call(rpc_event, generic_handlers, thread_pool):
-  if rpc_event.request_call_details.method is not None:
-    method_handler = _find_method_handler(rpc_event, generic_handlers)
-    if method_handler is None:
-      return _handle_unrecognized_method(rpc_event)
+    if rpc_event.request_call_details.method is not None:
+        method_handler = _find_method_handler(rpc_event, generic_handlers)
+        if method_handler is None:
+            return _handle_unrecognized_method(rpc_event)
+        else:
+            return _handle_with_method_handler(rpc_event, method_handler,
+                                               thread_pool)
     else:
-      return _handle_with_method_handler(rpc_event, method_handler, thread_pool)
-  else:
-    return None
+        return None
 
 
 @enum.unique
 class _ServerStage(enum.Enum):
-  STOPPED = 'stopped'
-  STARTED = 'started'
-  GRACE = 'grace'
+    STOPPED = 'stopped'
+    STARTED = 'started'
+    GRACE = 'grace'
 
 
 class _ServerState(object):
 
-  def __init__(self, completion_queue, server, generic_handlers, thread_pool):
-    self.lock = threading.Lock()
-    self.completion_queue = completion_queue
-    self.server = server
-    self.generic_handlers = list(generic_handlers)
-    self.thread_pool = thread_pool
-    self.stage = _ServerStage.STOPPED
-    self.shutdown_events = None
+    def __init__(self, completion_queue, server, generic_handlers, thread_pool):
+        self.lock = threading.Lock()
+        self.completion_queue = completion_queue
+        self.server = server
+        self.generic_handlers = list(generic_handlers)
+        self.thread_pool = thread_pool
+        self.stage = _ServerStage.STOPPED
+        self.shutdown_events = None
 
-    # TODO(https://github.com/grpc/grpc/issues/6597): eliminate these fields.
-    self.rpc_states = set()
-    self.due = set()
+        # TODO(https://github.com/grpc/grpc/issues/6597): eliminate these fields.
+        self.rpc_states = set()
+        self.due = set()
 
 
 def _add_generic_handlers(state, generic_handlers):
-  with state.lock:
-    state.generic_handlers.extend(generic_handlers)
+    with state.lock:
+        state.generic_handlers.extend(generic_handlers)
 
 
 def _add_insecure_port(state, address):
-  with state.lock:
-    return state.server.add_http2_port(address)
+    with state.lock:
+        return state.server.add_http2_port(address)
 
 
 def _add_secure_port(state, address, server_credentials):
-  with state.lock:
-    return state.server.add_http2_port(address, server_credentials._credentials)
+    with state.lock:
+        return state.server.add_http2_port(address,
+                                           server_credentials._credentials)
 
 
 def _request_call(state):
-  state.server.request_call(
-      state.completion_queue, state.completion_queue, _REQUEST_CALL_TAG)
-  state.due.add(_REQUEST_CALL_TAG)
+    state.server.request_call(state.completion_queue, state.completion_queue,
+                              _REQUEST_CALL_TAG)
+    state.due.add(_REQUEST_CALL_TAG)
 
 
 # TODO(https://github.com/grpc/grpc/issues/6597): delete this function.
 def _stop_serving(state):
-  if not state.rpc_states and not state.due:
-    for shutdown_event in state.shutdown_events:
-      shutdown_event.set()
-    state.stage = _ServerStage.STOPPED
-    return True
-  else:
-    return False
+    if not state.rpc_states and not state.due:
+        for shutdown_event in state.shutdown_events:
+            shutdown_event.set()
+        state.stage = _ServerStage.STOPPED
+        return True
+    else:
+        return False
 
 
 def _serve(state):
-  while True:
-    event = state.completion_queue.poll()
-    if event.tag is _SHUTDOWN_TAG:
-      with state.lock:
-        state.due.remove(_SHUTDOWN_TAG)
-        if _stop_serving(state):
-          return
-    elif event.tag is _REQUEST_CALL_TAG:
-      with state.lock:
-        state.due.remove(_REQUEST_CALL_TAG)
-        rpc_state = _handle_call(
-            event, state.generic_handlers, state.thread_pool)
-        if rpc_state is not None:
-          state.rpc_states.add(rpc_state)
-        if state.stage is _ServerStage.STARTED:
-          _request_call(state)
-        elif _stop_serving(state):
-          return
-    else:
-      rpc_state, callbacks = event.tag(event)
-      for callback in callbacks:
-        callable_util.call_logging_exceptions(
-            callback, 'Exception calling callback!')
-      if rpc_state is not None:
-        with state.lock:
-          state.rpc_states.remove(rpc_state)
-          if _stop_serving(state):
-            return
+    while True:
+        event = state.completion_queue.poll()
+        if event.tag is _SHUTDOWN_TAG:
+            with state.lock:
+                state.due.remove(_SHUTDOWN_TAG)
+                if _stop_serving(state):
+                    return
+        elif event.tag is _REQUEST_CALL_TAG:
+            with state.lock:
+                state.due.remove(_REQUEST_CALL_TAG)
+                rpc_state = _handle_call(event, state.generic_handlers,
+                                         state.thread_pool)
+                if rpc_state is not None:
+                    state.rpc_states.add(rpc_state)
+                if state.stage is _ServerStage.STARTED:
+                    _request_call(state)
+                elif _stop_serving(state):
+                    return
+        else:
+            rpc_state, callbacks = event.tag(event)
+            for callback in callbacks:
+                callable_util.call_logging_exceptions(
+                    callback, 'Exception calling callback!')
+            if rpc_state is not None:
+                with state.lock:
+                    state.rpc_states.remove(rpc_state)
+                    if _stop_serving(state):
+                        return
 
 
 def _stop(state, grace):
-  with state.lock:
-    if state.stage is _ServerStage.STOPPED:
-      shutdown_event = threading.Event()
-      shutdown_event.set()
-      return shutdown_event
-    else:
-      if state.stage is _ServerStage.STARTED:
-        state.server.shutdown(state.completion_queue, _SHUTDOWN_TAG)
-        state.stage = _ServerStage.GRACE
-        state.shutdown_events = []
-        state.due.add(_SHUTDOWN_TAG)
-      shutdown_event = threading.Event()
-      state.shutdown_events.append(shutdown_event)
-      if grace is None:
-        state.server.cancel_all_calls()
-        # TODO(https://github.com/grpc/grpc/issues/6597): delete this loop.
-        for rpc_state in state.rpc_states:
-          with rpc_state.condition:
-            rpc_state.client = _CANCELLED
-            rpc_state.condition.notify_all()
-      else:
-        def cancel_all_calls_after_grace():
-          shutdown_event.wait(timeout=grace)
-          with state.lock:
-            state.server.cancel_all_calls()
-            # TODO(https://github.com/grpc/grpc/issues/6597): delete this loop.
-            for rpc_state in state.rpc_states:
-              with rpc_state.condition:
-                rpc_state.client = _CANCELLED
-                rpc_state.condition.notify_all()
-        thread = threading.Thread(target=cancel_all_calls_after_grace)
-        thread.start()
-        return shutdown_event
-  shutdown_event.wait()
-  return shutdown_event
+    with state.lock:
+        if state.stage is _ServerStage.STOPPED:
+            shutdown_event = threading.Event()
+            shutdown_event.set()
+            return shutdown_event
+        else:
+            if state.stage is _ServerStage.STARTED:
+                state.server.shutdown(state.completion_queue, _SHUTDOWN_TAG)
+                state.stage = _ServerStage.GRACE
+                state.shutdown_events = []
+                state.due.add(_SHUTDOWN_TAG)
+            shutdown_event = threading.Event()
+            state.shutdown_events.append(shutdown_event)
+            if grace is None:
+                state.server.cancel_all_calls()
+                # TODO(https://github.com/grpc/grpc/issues/6597): delete this loop.
+                for rpc_state in state.rpc_states:
+                    with rpc_state.condition:
+                        rpc_state.client = _CANCELLED
+                        rpc_state.condition.notify_all()
+            else:
+
+                def cancel_all_calls_after_grace():
+                    shutdown_event.wait(timeout=grace)
+                    with state.lock:
+                        state.server.cancel_all_calls()
+                        # TODO(https://github.com/grpc/grpc/issues/6597): delete this loop.
+                        for rpc_state in state.rpc_states:
+                            with rpc_state.condition:
+                                rpc_state.client = _CANCELLED
+                                rpc_state.condition.notify_all()
+
+                thread = threading.Thread(target=cancel_all_calls_after_grace)
+                thread.start()
+                return shutdown_event
+    shutdown_event.wait()
+    return shutdown_event
 
 
 def _start(state):
-  with state.lock:
-    if state.stage is not _ServerStage.STOPPED:
-      raise ValueError('Cannot start already-started server!')
-    state.server.start()
-    state.stage = _ServerStage.STARTED
-    _request_call(state)    
-    def cleanup_server(timeout):
-      if timeout is None:
-        _stop(state, _UNEXPECTED_EXIT_SERVER_GRACE).wait()
-      else:
-        _stop(state, timeout).wait()
-
-    thread = _common.CleanupThread(
-        cleanup_server, target=_serve, args=(state,))
-    thread.start()
+    with state.lock:
+        if state.stage is not _ServerStage.STOPPED:
+            raise ValueError('Cannot start already-started server!')
+        state.server.start()
+        state.stage = _ServerStage.STARTED
+        _request_call(state)
+
+        def cleanup_server(timeout):
+            if timeout is None:
+                _stop(state, _UNEXPECTED_EXIT_SERVER_GRACE).wait()
+            else:
+                _stop(state, timeout).wait()
+
+        thread = _common.CleanupThread(
+            cleanup_server, target=_serve, args=(state,))
+        thread.start()
+
 
 class Server(grpc.Server):
 
-  def __init__(self, thread_pool, generic_handlers, options):
-    completion_queue = cygrpc.CompletionQueue()
-    server = cygrpc.Server(_common.channel_args(options))
-    server.register_completion_queue(completion_queue)
-    self._state = _ServerState(
-        completion_queue, server, generic_handlers, thread_pool)
+    def __init__(self, thread_pool, generic_handlers, options):
+        completion_queue = cygrpc.CompletionQueue()
+        server = cygrpc.Server(_common.channel_args(options))
+        server.register_completion_queue(completion_queue)
+        self._state = _ServerState(completion_queue, server, generic_handlers,
+                                   thread_pool)
 
-  def add_generic_rpc_handlers(self, generic_rpc_handlers):
-    _add_generic_handlers(self._state, generic_rpc_handlers)
+    def add_generic_rpc_handlers(self, generic_rpc_handlers):
+        _add_generic_handlers(self._state, generic_rpc_handlers)
 
-  def add_insecure_port(self, address):
-    return _add_insecure_port(self._state, _common.encode(address))
+    def add_insecure_port(self, address):
+        return _add_insecure_port(self._state, _common.encode(address))
 
-  def add_secure_port(self, address, server_credentials):
-    return _add_secure_port(self._state, _common.encode(address), server_credentials)
+    def add_secure_port(self, address, server_credentials):
+        return _add_secure_port(self._state,
+                                _common.encode(address), server_credentials)
 
-  def start(self):
-    _start(self._state)
+    def start(self):
+        _start(self._state)
 
-  def stop(self, grace):
-    return _stop(self._state, grace)
+    def stop(self, grace):
+        return _stop(self._state, grace)
 
-  def __del__(self):
-    _stop(self._state, None)
+    def __del__(self):
+        _stop(self._state, None)
diff --git a/src/python/grpcio/grpc/_utilities.py b/src/python/grpcio/grpc/_utilities.py
index a375896e6e6eb53da54b3b16f388bfe0e2791fb2..7c602eb37e36f45b1e5d5ae6bc379254a91f6ebe 100644
--- a/src/python/grpcio/grpc/_utilities.py
+++ b/src/python/grpcio/grpc/_utilities.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Internal utilities for gRPC Python."""
 
 import collections
@@ -44,132 +43,136 @@ _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE = (
 
 
 class RpcMethodHandler(
-    collections.namedtuple(
-        '_RpcMethodHandler',
-        ('request_streaming', 'response_streaming', 'request_deserializer',
-         'response_serializer', 'unary_unary', 'unary_stream', 'stream_unary',
-         'stream_stream',)),
-    grpc.RpcMethodHandler):
-  pass
+        collections.namedtuple('_RpcMethodHandler', (
+            'request_streaming',
+            'response_streaming',
+            'request_deserializer',
+            'response_serializer',
+            'unary_unary',
+            'unary_stream',
+            'stream_unary',
+            'stream_stream',)), grpc.RpcMethodHandler):
+    pass
 
 
 class DictionaryGenericHandler(grpc.ServiceRpcHandler):
 
-  def __init__(self, service, method_handlers):
-    self._name = service
-    self._method_handlers = {
-        _common.fully_qualified_method(service, method): method_handler
-        for method, method_handler in six.iteritems(method_handlers)}
+    def __init__(self, service, method_handlers):
+        self._name = service
+        self._method_handlers = {
+            _common.fully_qualified_method(service, method): method_handler
+            for method, method_handler in six.iteritems(method_handlers)
+        }
 
-  def service_name(self):
-    return self._name
+    def service_name(self):
+        return self._name
 
-  def service(self, handler_call_details):
-    return self._method_handlers.get(handler_call_details.method)
+    def service(self, handler_call_details):
+        return self._method_handlers.get(handler_call_details.method)
 
 
 class _ChannelReadyFuture(grpc.Future):
 
-  def __init__(self, channel):
-    self._condition = threading.Condition()
-    self._channel = channel
-
-    self._matured = False
-    self._cancelled = False
-    self._done_callbacks = []
-
-  def _block(self, timeout):
-    until = None if timeout is None else time.time() + timeout
-    with self._condition:
-      while True:
-        if self._cancelled:
-          raise grpc.FutureCancelledError()
-        elif self._matured:
-          return
-        else:
-          if until is None:
-            self._condition.wait()
-          else:
-            remaining = until - time.time()
-            if remaining < 0:
-              raise grpc.FutureTimeoutError()
+    def __init__(self, channel):
+        self._condition = threading.Condition()
+        self._channel = channel
+
+        self._matured = False
+        self._cancelled = False
+        self._done_callbacks = []
+
+    def _block(self, timeout):
+        until = None if timeout is None else time.time() + timeout
+        with self._condition:
+            while True:
+                if self._cancelled:
+                    raise grpc.FutureCancelledError()
+                elif self._matured:
+                    return
+                else:
+                    if until is None:
+                        self._condition.wait()
+                    else:
+                        remaining = until - time.time()
+                        if remaining < 0:
+                            raise grpc.FutureTimeoutError()
+                        else:
+                            self._condition.wait(timeout=remaining)
+
+    def _update(self, connectivity):
+        with self._condition:
+            if (not self._cancelled and
+                    connectivity is grpc.ChannelConnectivity.READY):
+                self._matured = True
+                self._channel.unsubscribe(self._update)
+                self._condition.notify_all()
+                done_callbacks = tuple(self._done_callbacks)
+                self._done_callbacks = None
+            else:
+                return
+
+        for done_callback in done_callbacks:
+            callable_util.call_logging_exceptions(
+                done_callback, _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE, self)
+
+    def cancel(self):
+        with self._condition:
+            if not self._matured:
+                self._cancelled = True
+                self._channel.unsubscribe(self._update)
+                self._condition.notify_all()
+                done_callbacks = tuple(self._done_callbacks)
+                self._done_callbacks = None
             else:
-              self._condition.wait(timeout=remaining)
-
-  def _update(self, connectivity):
-    with self._condition:
-      if (not self._cancelled and
-          connectivity is grpc.ChannelConnectivity.READY):
-        self._matured = True
-        self._channel.unsubscribe(self._update)
-        self._condition.notify_all()
-        done_callbacks = tuple(self._done_callbacks)
-        self._done_callbacks = None
-      else:
-        return
-
-    for done_callback in done_callbacks:
-      callable_util.call_logging_exceptions(
-          done_callback, _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE, self)
-
-  def cancel(self):
-    with self._condition:
-      if not self._matured:
-        self._cancelled = True
-        self._channel.unsubscribe(self._update)
-        self._condition.notify_all()
-        done_callbacks = tuple(self._done_callbacks)
-        self._done_callbacks = None
-      else:
-        return False
-
-    for done_callback in done_callbacks:
-      callable_util.call_logging_exceptions(
-          done_callback, _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE, self)
-
-  def cancelled(self):
-    with self._condition:
-      return self._cancelled
-
-  def running(self):
-    with self._condition:
-      return not self._cancelled and not self._matured
-
-  def done(self):
-    with self._condition:
-      return self._cancelled or self._matured
-
-  def result(self, timeout=None):
-    self._block(timeout)
-    return None
-
-  def exception(self, timeout=None):
-    self._block(timeout)
-    return None
-
-  def traceback(self, timeout=None):
-    self._block(timeout)
-    return None
-
-  def add_done_callback(self, fn):
-    with self._condition:
-      if not self._cancelled and not self._matured:
-        self._done_callbacks.append(fn)
-        return
-
-    fn(self)
-
-  def start(self):
-    with self._condition:
-      self._channel.subscribe(self._update, try_to_connect=True)
-
-  def __del__(self):
-    with self._condition:
-      if not self._cancelled and not self._matured:
-        self._channel.unsubscribe(self._update)
+                return False
+
+        for done_callback in done_callbacks:
+            callable_util.call_logging_exceptions(
+                done_callback, _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE, self)
+
+    def cancelled(self):
+        with self._condition:
+            return self._cancelled
+
+    def running(self):
+        with self._condition:
+            return not self._cancelled and not self._matured
+
+    def done(self):
+        with self._condition:
+            return self._cancelled or self._matured
+
+    def result(self, timeout=None):
+        self._block(timeout)
+        return None
+
+    def exception(self, timeout=None):
+        self._block(timeout)
+        return None
+
+    def traceback(self, timeout=None):
+        self._block(timeout)
+        return None
+
+    def add_done_callback(self, fn):
+        with self._condition:
+            if not self._cancelled and not self._matured:
+                self._done_callbacks.append(fn)
+                return
+
+        fn(self)
+
+    def start(self):
+        with self._condition:
+            self._channel.subscribe(self._update, try_to_connect=True)
+
+    def __del__(self):
+        with self._condition:
+            if not self._cancelled and not self._matured:
+                self._channel.unsubscribe(self._update)
 
 
 def channel_ready_future(channel):
-  ready_future = _ChannelReadyFuture(channel)
-  ready_future.start()
-  return ready_future
+    ready_future = _ChannelReadyFuture(channel)
+    ready_future.start()
+    return ready_future
diff --git a/src/python/grpcio/grpc/beta/_client_adaptations.py b/src/python/grpcio/grpc/beta/_client_adaptations.py
index e4ee44d7a3e2551b3f093427fd33633ccfb42ac2..e5b28e9408e5eefda3d30da4bb4827bf65efb857 100644
--- a/src/python/grpcio/grpc/beta/_client_adaptations.py
+++ b/src/python/grpcio/grpc/beta/_client_adaptations.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Translates gRPC's client-side API into gRPC's client-side Beta API."""
 
 import grpc
@@ -38,531 +37,654 @@ from grpc.framework.foundation import future
 from grpc.framework.interfaces.face import face
 
 _STATUS_CODE_TO_ABORTION_KIND_AND_ABORTION_ERROR_CLASS = {
-    grpc.StatusCode.CANCELLED: (
-        face.Abortion.Kind.CANCELLED, face.CancellationError),
-    grpc.StatusCode.UNKNOWN: (
-        face.Abortion.Kind.REMOTE_FAILURE, face.RemoteError),
-    grpc.StatusCode.DEADLINE_EXCEEDED: (
-        face.Abortion.Kind.EXPIRED, face.ExpirationError),
-    grpc.StatusCode.UNIMPLEMENTED: (
-        face.Abortion.Kind.LOCAL_FAILURE, face.LocalError),
+    grpc.StatusCode.CANCELLED: (face.Abortion.Kind.CANCELLED,
+                                face.CancellationError),
+    grpc.StatusCode.UNKNOWN: (face.Abortion.Kind.REMOTE_FAILURE,
+                              face.RemoteError),
+    grpc.StatusCode.DEADLINE_EXCEEDED: (face.Abortion.Kind.EXPIRED,
+                                        face.ExpirationError),
+    grpc.StatusCode.UNIMPLEMENTED: (face.Abortion.Kind.LOCAL_FAILURE,
+                                    face.LocalError),
 }
 
 
 def _effective_metadata(metadata, metadata_transformer):
-  non_none_metadata = () if metadata is None else metadata
-  if metadata_transformer is None:
-    return non_none_metadata
-  else:
-    return metadata_transformer(non_none_metadata)
+    non_none_metadata = () if metadata is None else metadata
+    if metadata_transformer is None:
+        return non_none_metadata
+    else:
+        return metadata_transformer(non_none_metadata)
 
 
 def _credentials(grpc_call_options):
-  return None if grpc_call_options is None else grpc_call_options.credentials
+    return None if grpc_call_options is None else grpc_call_options.credentials
 
 
 def _abortion(rpc_error_call):
-  code = rpc_error_call.code()
-  pair = _STATUS_CODE_TO_ABORTION_KIND_AND_ABORTION_ERROR_CLASS.get(code)
-  error_kind = face.Abortion.Kind.LOCAL_FAILURE if pair is None else pair[0]
-  return face.Abortion(
-      error_kind, rpc_error_call.initial_metadata(),
-      rpc_error_call.trailing_metadata(), code, rpc_error_call.details())
+    code = rpc_error_call.code()
+    pair = _STATUS_CODE_TO_ABORTION_KIND_AND_ABORTION_ERROR_CLASS.get(code)
+    error_kind = face.Abortion.Kind.LOCAL_FAILURE if pair is None else pair[0]
+    return face.Abortion(error_kind,
+                         rpc_error_call.initial_metadata(),
+                         rpc_error_call.trailing_metadata(), code,
+                         rpc_error_call.details())
 
 
 def _abortion_error(rpc_error_call):
-  code = rpc_error_call.code()
-  pair = _STATUS_CODE_TO_ABORTION_KIND_AND_ABORTION_ERROR_CLASS.get(code)
-  exception_class = face.AbortionError if pair is None else pair[1]
-  return exception_class(
-      rpc_error_call.initial_metadata(), rpc_error_call.trailing_metadata(),
-      code, rpc_error_call.details())
+    code = rpc_error_call.code()
+    pair = _STATUS_CODE_TO_ABORTION_KIND_AND_ABORTION_ERROR_CLASS.get(code)
+    exception_class = face.AbortionError if pair is None else pair[1]
+    return exception_class(rpc_error_call.initial_metadata(),
+                           rpc_error_call.trailing_metadata(), code,
+                           rpc_error_call.details())
 
 
 class _InvocationProtocolContext(interfaces.GRPCInvocationContext):
 
-  def disable_next_request_compression(self):
-    pass  # TODO(https://github.com/grpc/grpc/issues/4078): design, implement.
+    def disable_next_request_compression(self):
+        pass  # TODO(https://github.com/grpc/grpc/issues/4078): design, implement.
 
 
 class _Rendezvous(future.Future, face.Call):
 
-  def __init__(self, response_future, response_iterator, call):
-    self._future = response_future
-    self._iterator = response_iterator
-    self._call = call
+    def __init__(self, response_future, response_iterator, call):
+        self._future = response_future
+        self._iterator = response_iterator
+        self._call = call
 
-  def cancel(self):
-    return self._call.cancel()
+    def cancel(self):
+        return self._call.cancel()
 
-  def cancelled(self):
-    return self._future.cancelled()
+    def cancelled(self):
+        return self._future.cancelled()
 
-  def running(self):
-    return self._future.running()
+    def running(self):
+        return self._future.running()
 
-  def done(self):
-    return self._future.done()
+    def done(self):
+        return self._future.done()
 
-  def result(self, timeout=None):
-    try:
-      return self._future.result(timeout=timeout)
-    except grpc.RpcError as rpc_error_call:
-      raise _abortion_error(rpc_error_call)
-    except grpc.FutureTimeoutError:
-      raise future.TimeoutError()
-    except grpc.FutureCancelledError:
-      raise future.CancelledError()
+    def result(self, timeout=None):
+        try:
+            return self._future.result(timeout=timeout)
+        except grpc.RpcError as rpc_error_call:
+            raise _abortion_error(rpc_error_call)
+        except grpc.FutureTimeoutError:
+            raise future.TimeoutError()
+        except grpc.FutureCancelledError:
+            raise future.CancelledError()
 
-  def exception(self, timeout=None):
-    try:
-      rpc_error_call = self._future.exception(timeout=timeout)
-      if rpc_error_call is None:
-        return None
-      else:
-        return _abortion_error(rpc_error_call)
-    except grpc.FutureTimeoutError:
-      raise future.TimeoutError()
-    except grpc.FutureCancelledError:
-      raise future.CancelledError()
-
-  def traceback(self, timeout=None):
-    try:
-      return self._future.traceback(timeout=timeout)
-    except grpc.FutureTimeoutError:
-      raise future.TimeoutError()
-    except grpc.FutureCancelledError:
-      raise future.CancelledError()
+    def exception(self, timeout=None):
+        try:
+            rpc_error_call = self._future.exception(timeout=timeout)
+            if rpc_error_call is None:
+                return None
+            else:
+                return _abortion_error(rpc_error_call)
+        except grpc.FutureTimeoutError:
+            raise future.TimeoutError()
+        except grpc.FutureCancelledError:
+            raise future.CancelledError()
 
-  def add_done_callback(self, fn):
-    self._future.add_done_callback(lambda ignored_callback: fn(self))
+    def traceback(self, timeout=None):
+        try:
+            return self._future.traceback(timeout=timeout)
+        except grpc.FutureTimeoutError:
+            raise future.TimeoutError()
+        except grpc.FutureCancelledError:
+            raise future.CancelledError()
 
-  def __iter__(self):
-    return self
+    def add_done_callback(self, fn):
+        self._future.add_done_callback(lambda ignored_callback: fn(self))
 
-  def _next(self):
-    try:
-      return next(self._iterator)
-    except grpc.RpcError as rpc_error_call:
-      raise _abortion_error(rpc_error_call)
+    def __iter__(self):
+        return self
+
+    def _next(self):
+        try:
+            return next(self._iterator)
+        except grpc.RpcError as rpc_error_call:
+            raise _abortion_error(rpc_error_call)
+
+    def __next__(self):
+        return self._next()
 
-  def __next__(self):
-    return self._next()
+    def next(self):
+        return self._next()
 
-  def next(self):
-    return self._next()
+    def is_active(self):
+        return self._call.is_active()
 
-  def is_active(self):
-    return self._call.is_active()
+    def time_remaining(self):
+        return self._call.time_remaining()
 
-  def time_remaining(self):
-    return self._call.time_remaining()
+    def add_abortion_callback(self, abortion_callback):
 
-  def add_abortion_callback(self, abortion_callback):
-    def done_callback():
-      if self.code() is not grpc.StatusCode.OK:
-        abortion_callback(_abortion(self._call))
-    registered = self._call.add_callback(done_callback)
-    return None if registered else done_callback()
+        def done_callback():
+            if self.code() is not grpc.StatusCode.OK:
+                abortion_callback(_abortion(self._call))
 
-  def protocol_context(self):
-    return _InvocationProtocolContext()
+        registered = self._call.add_callback(done_callback)
+        return None if registered else done_callback()
 
-  def initial_metadata(self):
-    return self._call.initial_metadata()
+    def protocol_context(self):
+        return _InvocationProtocolContext()
 
-  def terminal_metadata(self):
-    return self._call.terminal_metadata()
+    def initial_metadata(self):
+        return self._call.initial_metadata()
 
-  def code(self):
-    return self._call.code()
+    def terminal_metadata(self):
+        return self._call.terminal_metadata()
 
-  def details(self):
-    return self._call.details()
+    def code(self):
+        return self._call.code()
 
+    def details(self):
+        return self._call.details()
 
-def _blocking_unary_unary(
-    channel, group, method, timeout, with_call, protocol_options, metadata,
-    metadata_transformer, request, request_serializer, response_deserializer):
-  try:
+
+def _blocking_unary_unary(channel, group, method, timeout, with_call,
+                          protocol_options, metadata, metadata_transformer,
+                          request, request_serializer, response_deserializer):
+    try:
+        multi_callable = channel.unary_unary(
+            _common.fully_qualified_method(group, method),
+            request_serializer=request_serializer,
+            response_deserializer=response_deserializer)
+        effective_metadata = _effective_metadata(metadata, metadata_transformer)
+        if with_call:
+            response, call = multi_callable.with_call(
+                request,
+                timeout=timeout,
+                metadata=effective_metadata,
+                credentials=_credentials(protocol_options))
+            return response, _Rendezvous(None, None, call)
+        else:
+            return multi_callable(
+                request,
+                timeout=timeout,
+                metadata=effective_metadata,
+                credentials=_credentials(protocol_options))
+    except grpc.RpcError as rpc_error_call:
+        raise _abortion_error(rpc_error_call)
+
+
+def _future_unary_unary(channel, group, method, timeout, protocol_options,
+                        metadata, metadata_transformer, request,
+                        request_serializer, response_deserializer):
     multi_callable = channel.unary_unary(
         _common.fully_qualified_method(group, method),
         request_serializer=request_serializer,
         response_deserializer=response_deserializer)
     effective_metadata = _effective_metadata(metadata, metadata_transformer)
-    if with_call:
-      response, call = multi_callable.with_call(
-          request, timeout=timeout, metadata=effective_metadata,
-          credentials=_credentials(protocol_options))
-      return response, _Rendezvous(None, None, call)
-    else:
-      return multi_callable(
-          request, timeout=timeout, metadata=effective_metadata,
-          credentials=_credentials(protocol_options))
-  except grpc.RpcError as rpc_error_call:
-    raise _abortion_error(rpc_error_call)
-
-
-def _future_unary_unary(
-    channel, group, method, timeout, protocol_options, metadata,
-    metadata_transformer, request, request_serializer, response_deserializer):
-  multi_callable = channel.unary_unary(
-      _common.fully_qualified_method(group, method),
-      request_serializer=request_serializer,
-      response_deserializer=response_deserializer)
-  effective_metadata = _effective_metadata(metadata, metadata_transformer)
-  response_future = multi_callable.future(
-      request, timeout=timeout, metadata=effective_metadata,
-      credentials=_credentials(protocol_options))
-  return _Rendezvous(response_future, None, response_future)
-
-
-def _unary_stream(
-    channel, group, method, timeout, protocol_options, metadata,
-    metadata_transformer, request, request_serializer, response_deserializer):
-  multi_callable = channel.unary_stream(
-      _common.fully_qualified_method(group, method),
-      request_serializer=request_serializer,
-      response_deserializer=response_deserializer)
-  effective_metadata = _effective_metadata(metadata, metadata_transformer)
-  response_iterator = multi_callable(
-      request, timeout=timeout, metadata=effective_metadata,
-      credentials=_credentials(protocol_options))
-  return _Rendezvous(None, response_iterator, response_iterator)
-
-
-def _blocking_stream_unary(
-    channel, group, method, timeout, with_call, protocol_options, metadata,
-    metadata_transformer, request_iterator, request_serializer,
-    response_deserializer):
-  try:
+    response_future = multi_callable.future(
+        request,
+        timeout=timeout,
+        metadata=effective_metadata,
+        credentials=_credentials(protocol_options))
+    return _Rendezvous(response_future, None, response_future)
+
+
+def _unary_stream(channel, group, method, timeout, protocol_options, metadata,
+                  metadata_transformer, request, request_serializer,
+                  response_deserializer):
+    multi_callable = channel.unary_stream(
+        _common.fully_qualified_method(group, method),
+        request_serializer=request_serializer,
+        response_deserializer=response_deserializer)
+    effective_metadata = _effective_metadata(metadata, metadata_transformer)
+    response_iterator = multi_callable(
+        request,
+        timeout=timeout,
+        metadata=effective_metadata,
+        credentials=_credentials(protocol_options))
+    return _Rendezvous(None, response_iterator, response_iterator)
+
+
+def _blocking_stream_unary(channel, group, method, timeout, with_call,
+                           protocol_options, metadata, metadata_transformer,
+                           request_iterator, request_serializer,
+                           response_deserializer):
+    try:
+        multi_callable = channel.stream_unary(
+            _common.fully_qualified_method(group, method),
+            request_serializer=request_serializer,
+            response_deserializer=response_deserializer)
+        effective_metadata = _effective_metadata(metadata, metadata_transformer)
+        if with_call:
+            response, call = multi_callable.with_call(
+                request_iterator,
+                timeout=timeout,
+                metadata=effective_metadata,
+                credentials=_credentials(protocol_options))
+            return response, _Rendezvous(None, None, call)
+        else:
+            return multi_callable(
+                request_iterator,
+                timeout=timeout,
+                metadata=effective_metadata,
+                credentials=_credentials(protocol_options))
+    except grpc.RpcError as rpc_error_call:
+        raise _abortion_error(rpc_error_call)
+
+
+def _future_stream_unary(channel, group, method, timeout, protocol_options,
+                         metadata, metadata_transformer, request_iterator,
+                         request_serializer, response_deserializer):
     multi_callable = channel.stream_unary(
         _common.fully_qualified_method(group, method),
         request_serializer=request_serializer,
         response_deserializer=response_deserializer)
     effective_metadata = _effective_metadata(metadata, metadata_transformer)
-    if with_call:
-      response, call = multi_callable.with_call(
-          request_iterator, timeout=timeout, metadata=effective_metadata,
-          credentials=_credentials(protocol_options))
-      return response, _Rendezvous(None, None, call)
-    else:
-      return multi_callable(
-          request_iterator, timeout=timeout, metadata=effective_metadata,
-          credentials=_credentials(protocol_options))
-  except grpc.RpcError as rpc_error_call:
-    raise _abortion_error(rpc_error_call)
-
-
-def _future_stream_unary(
-    channel, group, method, timeout, protocol_options, metadata,
-    metadata_transformer, request_iterator, request_serializer,
-    response_deserializer):
-  multi_callable = channel.stream_unary(
-      _common.fully_qualified_method(group, method),
-      request_serializer=request_serializer,
-      response_deserializer=response_deserializer)
-  effective_metadata = _effective_metadata(metadata, metadata_transformer)
-  response_future = multi_callable.future(
-      request_iterator, timeout=timeout, metadata=effective_metadata,
-      credentials=_credentials(protocol_options))
-  return _Rendezvous(response_future, None, response_future)
-
-
-def _stream_stream(
-    channel, group, method, timeout, protocol_options, metadata,
-    metadata_transformer, request_iterator, request_serializer,
-    response_deserializer):
-  multi_callable = channel.stream_stream(
-      _common.fully_qualified_method(group, method),
-      request_serializer=request_serializer,
-      response_deserializer=response_deserializer)
-  effective_metadata = _effective_metadata(metadata, metadata_transformer)
-  response_iterator = multi_callable(
-      request_iterator, timeout=timeout, metadata=effective_metadata,
-      credentials=_credentials(protocol_options))
-  return _Rendezvous(None, response_iterator, response_iterator)
+    response_future = multi_callable.future(
+        request_iterator,
+        timeout=timeout,
+        metadata=effective_metadata,
+        credentials=_credentials(protocol_options))
+    return _Rendezvous(response_future, None, response_future)
+
+
+def _stream_stream(channel, group, method, timeout, protocol_options, metadata,
+                   metadata_transformer, request_iterator, request_serializer,
+                   response_deserializer):
+    multi_callable = channel.stream_stream(
+        _common.fully_qualified_method(group, method),
+        request_serializer=request_serializer,
+        response_deserializer=response_deserializer)
+    effective_metadata = _effective_metadata(metadata, metadata_transformer)
+    response_iterator = multi_callable(
+        request_iterator,
+        timeout=timeout,
+        metadata=effective_metadata,
+        credentials=_credentials(protocol_options))
+    return _Rendezvous(None, response_iterator, response_iterator)
 
 
 class _UnaryUnaryMultiCallable(face.UnaryUnaryMultiCallable):
 
-  def __init__(
-      self, channel, group, method, metadata_transformer, request_serializer,
-      response_deserializer):
-    self._channel = channel
-    self._group = group
-    self._method = method
-    self._metadata_transformer = metadata_transformer
-    self._request_serializer = request_serializer
-    self._response_deserializer = response_deserializer
-
-  def __call__(
-      self, request, timeout, metadata=None, with_call=False,
-      protocol_options=None):
-    return _blocking_unary_unary(
-        self._channel, self._group, self._method, timeout, with_call,
-        protocol_options, metadata, self._metadata_transformer, request,
-        self._request_serializer, self._response_deserializer)
-
-  def future(self, request, timeout, metadata=None, protocol_options=None):
-    return _future_unary_unary(
-        self._channel, self._group, self._method, timeout, protocol_options,
-        metadata, self._metadata_transformer, request, self._request_serializer,
-        self._response_deserializer)
-
-  def event(
-      self, request, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    raise NotImplementedError()
+    def __init__(self, channel, group, method, metadata_transformer,
+                 request_serializer, response_deserializer):
+        self._channel = channel
+        self._group = group
+        self._method = method
+        self._metadata_transformer = metadata_transformer
+        self._request_serializer = request_serializer
+        self._response_deserializer = response_deserializer
+
+    def __call__(self,
+                 request,
+                 timeout,
+                 metadata=None,
+                 with_call=False,
+                 protocol_options=None):
+        return _blocking_unary_unary(
+            self._channel, self._group, self._method, timeout, with_call,
+            protocol_options, metadata, self._metadata_transformer, request,
+            self._request_serializer, self._response_deserializer)
+
+    def future(self, request, timeout, metadata=None, protocol_options=None):
+        return _future_unary_unary(
+            self._channel, self._group, self._method, timeout, protocol_options,
+            metadata, self._metadata_transformer, request,
+            self._request_serializer, self._response_deserializer)
+
+    def event(self,
+              request,
+              receiver,
+              abortion_callback,
+              timeout,
+              metadata=None,
+              protocol_options=None):
+        raise NotImplementedError()
 
 
 class _UnaryStreamMultiCallable(face.UnaryStreamMultiCallable):
 
-  def __init__(
-      self, channel, group, method, metadata_transformer, request_serializer,
-      response_deserializer):
-    self._channel = channel
-    self._group = group
-    self._method = method
-    self._metadata_transformer = metadata_transformer
-    self._request_serializer = request_serializer
-    self._response_deserializer = response_deserializer
-
-  def __call__(self, request, timeout, metadata=None, protocol_options=None):
-    return _unary_stream(
-        self._channel, self._group, self._method, timeout, protocol_options,
-        metadata, self._metadata_transformer, request, self._request_serializer,
-        self._response_deserializer)
-
-  def event(
-      self, request, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    raise NotImplementedError()
+    def __init__(self, channel, group, method, metadata_transformer,
+                 request_serializer, response_deserializer):
+        self._channel = channel
+        self._group = group
+        self._method = method
+        self._metadata_transformer = metadata_transformer
+        self._request_serializer = request_serializer
+        self._response_deserializer = response_deserializer
+
+    def __call__(self, request, timeout, metadata=None, protocol_options=None):
+        return _unary_stream(
+            self._channel, self._group, self._method, timeout, protocol_options,
+            metadata, self._metadata_transformer, request,
+            self._request_serializer, self._response_deserializer)
+
+    def event(self,
+              request,
+              receiver,
+              abortion_callback,
+              timeout,
+              metadata=None,
+              protocol_options=None):
+        raise NotImplementedError()
 
 
 class _StreamUnaryMultiCallable(face.StreamUnaryMultiCallable):
 
-  def __init__(
-      self, channel, group, method, metadata_transformer, request_serializer,
-      response_deserializer):
-    self._channel = channel
-    self._group = group
-    self._method = method
-    self._metadata_transformer = metadata_transformer
-    self._request_serializer = request_serializer
-    self._response_deserializer = response_deserializer
-
-  def __call__(
-      self, request_iterator, timeout, metadata=None, with_call=False,
-      protocol_options=None):
-    return _blocking_stream_unary(
-        self._channel, self._group, self._method, timeout, with_call,
-        protocol_options, metadata, self._metadata_transformer,
-        request_iterator, self._request_serializer, self._response_deserializer)
-
-  def future(
-      self, request_iterator, timeout, metadata=None, protocol_options=None):
-    return _future_stream_unary(
-        self._channel, self._group, self._method, timeout, protocol_options,
-        metadata, self._metadata_transformer, request_iterator,
-        self._request_serializer, self._response_deserializer)
-
-  def event(
-      self, receiver, abortion_callback, timeout, metadata=None,
-      protocol_options=None):
-    raise NotImplementedError()
+    def __init__(self, channel, group, method, metadata_transformer,
+                 request_serializer, response_deserializer):
+        self._channel = channel
+        self._group = group
+        self._method = method
+        self._metadata_transformer = metadata_transformer
+        self._request_serializer = request_serializer
+        self._response_deserializer = response_deserializer
+
+    def __call__(self,
+                 request_iterator,
+                 timeout,
+                 metadata=None,
+                 with_call=False,
+                 protocol_options=None):
+        return _blocking_stream_unary(
+            self._channel, self._group, self._method, timeout, with_call,
+            protocol_options, metadata, self._metadata_transformer,
+            request_iterator, self._request_serializer,
+            self._response_deserializer)
+
+    def future(self,
+               request_iterator,
+               timeout,
+               metadata=None,
+               protocol_options=None):
+        return _future_stream_unary(
+            self._channel, self._group, self._method, timeout, protocol_options,
+            metadata, self._metadata_transformer, request_iterator,
+            self._request_serializer, self._response_deserializer)
+
+    def event(self,
+              receiver,
+              abortion_callback,
+              timeout,
+              metadata=None,
+              protocol_options=None):
+        raise NotImplementedError()
 
 
 class _StreamStreamMultiCallable(face.StreamStreamMultiCallable):
 
-  def __init__(
-      self, channel, group, method, metadata_transformer, request_serializer,
-      response_deserializer):
-    self._channel = channel
-    self._group = group
-    self._method = method
-    self._metadata_transformer = metadata_transformer
-    self._request_serializer = request_serializer
-    self._response_deserializer = response_deserializer
-
-  def __call__(
-      self, request_iterator, timeout, metadata=None, protocol_options=None):
-    return _stream_stream(
-        self._channel, self._group, self._method, timeout, protocol_options,
-        metadata, self._metadata_transformer, request_iterator,
-        self._request_serializer, self._response_deserializer)
-
-  def event(
-      self, receiver, abortion_callback, timeout, metadata=None,
-      protocol_options=None):
-    raise NotImplementedError()
+    def __init__(self, channel, group, method, metadata_transformer,
+                 request_serializer, response_deserializer):
+        self._channel = channel
+        self._group = group
+        self._method = method
+        self._metadata_transformer = metadata_transformer
+        self._request_serializer = request_serializer
+        self._response_deserializer = response_deserializer
+
+    def __call__(self,
+                 request_iterator,
+                 timeout,
+                 metadata=None,
+                 protocol_options=None):
+        return _stream_stream(
+            self._channel, self._group, self._method, timeout, protocol_options,
+            metadata, self._metadata_transformer, request_iterator,
+            self._request_serializer, self._response_deserializer)
+
+    def event(self,
+              receiver,
+              abortion_callback,
+              timeout,
+              metadata=None,
+              protocol_options=None):
+        raise NotImplementedError()
 
 
 class _GenericStub(face.GenericStub):
 
-  def __init__(
-      self, channel, metadata_transformer, request_serializers,
-      response_deserializers):
-    self._channel = channel
-    self._metadata_transformer = metadata_transformer
-    self._request_serializers = request_serializers or {}
-    self._response_deserializers = response_deserializers or {}
-
-  def blocking_unary_unary(
-      self, group, method, request, timeout, metadata=None,
-      with_call=None, protocol_options=None):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _blocking_unary_unary(
-        self._channel, group, method, timeout, with_call, protocol_options,
-        metadata, self._metadata_transformer, request, request_serializer,
-        response_deserializer)
-
-  def future_unary_unary(
-      self, group, method, request, timeout, metadata=None,
-      protocol_options=None):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _future_unary_unary(
-        self._channel, group, method, timeout, protocol_options, metadata,
-        self._metadata_transformer, request, request_serializer,
-        response_deserializer)
-
-  def inline_unary_stream(
-      self, group, method, request, timeout, metadata=None,
-      protocol_options=None):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _unary_stream(
-        self._channel, group, method, timeout, protocol_options, metadata,
-        self._metadata_transformer, request, request_serializer,
-        response_deserializer)
-
-  def blocking_stream_unary(
-      self, group, method, request_iterator, timeout, metadata=None,
-      with_call=None, protocol_options=None):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _blocking_stream_unary(
-        self._channel, group, method, timeout, with_call, protocol_options,
-        metadata, self._metadata_transformer, request_iterator,
-        request_serializer, response_deserializer)
-
-  def future_stream_unary(
-      self, group, method, request_iterator, timeout, metadata=None,
-      protocol_options=None):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _future_stream_unary(
-        self._channel, group, method, timeout, protocol_options, metadata,
-        self._metadata_transformer, request_iterator, request_serializer,
-        response_deserializer)
-
-  def inline_stream_stream(
-      self, group, method, request_iterator, timeout, metadata=None,
-      protocol_options=None):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _stream_stream(
-        self._channel, group, method, timeout, protocol_options, metadata,
-        self._metadata_transformer, request_iterator, request_serializer,
-        response_deserializer)
-
-  def event_unary_unary(
-      self, group, method, request, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    raise NotImplementedError()
-
-  def event_unary_stream(
-      self, group, method, request, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    raise NotImplementedError()
-
-  def event_stream_unary(
-      self, group, method, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    raise NotImplementedError()
-
-  def event_stream_stream(
-      self, group, method, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    raise NotImplementedError()
-
-  def unary_unary(self, group, method):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _UnaryUnaryMultiCallable(
-        self._channel, group, method, self._metadata_transformer,
-        request_serializer, response_deserializer)
-
-  def unary_stream(self, group, method):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _UnaryStreamMultiCallable(
-        self._channel, group, method, self._metadata_transformer,
-        request_serializer, response_deserializer)
-
-  def stream_unary(self, group, method):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _StreamUnaryMultiCallable(
-        self._channel, group, method, self._metadata_transformer,
-        request_serializer, response_deserializer)
-
-  def stream_stream(self, group, method):
-    request_serializer = self._request_serializers.get((group, method,))
-    response_deserializer = self._response_deserializers.get((group, method,))
-    return _StreamStreamMultiCallable(
-        self._channel, group, method, self._metadata_transformer,
-        request_serializer, response_deserializer)
-
-  def __enter__(self):
-    return self
-
-  def __exit__(self, exc_type, exc_val, exc_tb):
-    return False
+    def __init__(self, channel, metadata_transformer, request_serializers,
+                 response_deserializers):
+        self._channel = channel
+        self._metadata_transformer = metadata_transformer
+        self._request_serializers = request_serializers or {}
+        self._response_deserializers = response_deserializers or {}
+
+    def blocking_unary_unary(self,
+                             group,
+                             method,
+                             request,
+                             timeout,
+                             metadata=None,
+                             with_call=None,
+                             protocol_options=None):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _blocking_unary_unary(self._channel, group, method, timeout,
+                                     with_call, protocol_options, metadata,
+                                     self._metadata_transformer, request,
+                                     request_serializer, response_deserializer)
+
+    def future_unary_unary(self,
+                           group,
+                           method,
+                           request,
+                           timeout,
+                           metadata=None,
+                           protocol_options=None):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _future_unary_unary(self._channel, group, method, timeout,
+                                   protocol_options, metadata,
+                                   self._metadata_transformer, request,
+                                   request_serializer, response_deserializer)
+
+    def inline_unary_stream(self,
+                            group,
+                            method,
+                            request,
+                            timeout,
+                            metadata=None,
+                            protocol_options=None):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _unary_stream(self._channel, group, method, timeout,
+                             protocol_options, metadata,
+                             self._metadata_transformer, request,
+                             request_serializer, response_deserializer)
+
+    def blocking_stream_unary(self,
+                              group,
+                              method,
+                              request_iterator,
+                              timeout,
+                              metadata=None,
+                              with_call=None,
+                              protocol_options=None):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _blocking_stream_unary(
+            self._channel, group, method, timeout, with_call, protocol_options,
+            metadata, self._metadata_transformer, request_iterator,
+            request_serializer, response_deserializer)
+
+    def future_stream_unary(self,
+                            group,
+                            method,
+                            request_iterator,
+                            timeout,
+                            metadata=None,
+                            protocol_options=None):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _future_stream_unary(
+            self._channel, group, method, timeout, protocol_options, metadata,
+            self._metadata_transformer, request_iterator, request_serializer,
+            response_deserializer)
+
+    def inline_stream_stream(self,
+                             group,
+                             method,
+                             request_iterator,
+                             timeout,
+                             metadata=None,
+                             protocol_options=None):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _stream_stream(self._channel, group, method, timeout,
+                              protocol_options, metadata,
+                              self._metadata_transformer, request_iterator,
+                              request_serializer, response_deserializer)
+
+    def event_unary_unary(self,
+                          group,
+                          method,
+                          request,
+                          receiver,
+                          abortion_callback,
+                          timeout,
+                          metadata=None,
+                          protocol_options=None):
+        raise NotImplementedError()
+
+    def event_unary_stream(self,
+                           group,
+                           method,
+                           request,
+                           receiver,
+                           abortion_callback,
+                           timeout,
+                           metadata=None,
+                           protocol_options=None):
+        raise NotImplementedError()
+
+    def event_stream_unary(self,
+                           group,
+                           method,
+                           receiver,
+                           abortion_callback,
+                           timeout,
+                           metadata=None,
+                           protocol_options=None):
+        raise NotImplementedError()
+
+    def event_stream_stream(self,
+                            group,
+                            method,
+                            receiver,
+                            abortion_callback,
+                            timeout,
+                            metadata=None,
+                            protocol_options=None):
+        raise NotImplementedError()
+
+    def unary_unary(self, group, method):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _UnaryUnaryMultiCallable(
+            self._channel, group, method, self._metadata_transformer,
+            request_serializer, response_deserializer)
+
+    def unary_stream(self, group, method):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _UnaryStreamMultiCallable(
+            self._channel, group, method, self._metadata_transformer,
+            request_serializer, response_deserializer)
+
+    def stream_unary(self, group, method):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _StreamUnaryMultiCallable(
+            self._channel, group, method, self._metadata_transformer,
+            request_serializer, response_deserializer)
+
+    def stream_stream(self, group, method):
+        request_serializer = self._request_serializers.get((
+            group,
+            method,))
+        response_deserializer = self._response_deserializers.get((
+            group,
+            method,))
+        return _StreamStreamMultiCallable(
+            self._channel, group, method, self._metadata_transformer,
+            request_serializer, response_deserializer)
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        return False
 
 
 class _DynamicStub(face.DynamicStub):
 
-  def __init__(self, generic_stub, group, cardinalities):
-    self._generic_stub = generic_stub
-    self._group = group
-    self._cardinalities = cardinalities
-
-  def __getattr__(self, attr):
-    method_cardinality = self._cardinalities.get(attr)
-    if method_cardinality is cardinality.Cardinality.UNARY_UNARY:
-      return self._generic_stub.unary_unary(self._group, attr)
-    elif method_cardinality is cardinality.Cardinality.UNARY_STREAM:
-      return self._generic_stub.unary_stream(self._group, attr)
-    elif method_cardinality is cardinality.Cardinality.STREAM_UNARY:
-      return self._generic_stub.stream_unary(self._group, attr)
-    elif method_cardinality is cardinality.Cardinality.STREAM_STREAM:
-      return self._generic_stub.stream_stream(self._group, attr)
-    else:
-      raise AttributeError('_DynamicStub object has no attribute "%s"!' % attr)
-
-  def __enter__(self):
-    return self
-
-  def __exit__(self, exc_type, exc_val, exc_tb):
-    return False
-
-
-def generic_stub(
-    channel, host, metadata_transformer, request_serializers,
-    response_deserializers):
-  return _GenericStub(
-      channel, metadata_transformer, request_serializers,
-      response_deserializers)
-
-
-def dynamic_stub(
-    channel, service, cardinalities, host, metadata_transformer,
-    request_serializers, response_deserializers):
-  return _DynamicStub(
-      _GenericStub(
-          channel, metadata_transformer, request_serializers,
-          response_deserializers),
-      service, cardinalities)
+    def __init__(self, generic_stub, group, cardinalities):
+        self._generic_stub = generic_stub
+        self._group = group
+        self._cardinalities = cardinalities
+
+    def __getattr__(self, attr):
+        method_cardinality = self._cardinalities.get(attr)
+        if method_cardinality is cardinality.Cardinality.UNARY_UNARY:
+            return self._generic_stub.unary_unary(self._group, attr)
+        elif method_cardinality is cardinality.Cardinality.UNARY_STREAM:
+            return self._generic_stub.unary_stream(self._group, attr)
+        elif method_cardinality is cardinality.Cardinality.STREAM_UNARY:
+            return self._generic_stub.stream_unary(self._group, attr)
+        elif method_cardinality is cardinality.Cardinality.STREAM_STREAM:
+            return self._generic_stub.stream_stream(self._group, attr)
+        else:
+            raise AttributeError('_DynamicStub object has no attribute "%s"!' %
+                                 attr)
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        return False
+
+
+def generic_stub(channel, host, metadata_transformer, request_serializers,
+                 response_deserializers):
+    return _GenericStub(channel, metadata_transformer, request_serializers,
+                        response_deserializers)
+
+
+def dynamic_stub(channel, service, cardinalities, host, metadata_transformer,
+                 request_serializers, response_deserializers):
+    return _DynamicStub(
+        _GenericStub(channel, metadata_transformer, request_serializers,
+                     response_deserializers), service, cardinalities)
diff --git a/src/python/grpcio/grpc/beta/_connectivity_channel.py b/src/python/grpcio/grpc/beta/_connectivity_channel.py
index 61674a70add401b9cbb606acbdc62162aae6d9ba..39020d2b4ef0f0bfa15468284441085b1b70a224 100644
--- a/src/python/grpcio/grpc/beta/_connectivity_channel.py
+++ b/src/python/grpcio/grpc/beta/_connectivity_channel.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Affords a connectivity-state-listenable channel."""
 
 import threading
@@ -41,116 +40,122 @@ _CHANNEL_SUBSCRIPTION_CALLBACK_ERROR_LOG_MESSAGE = (
     'Exception calling channel subscription callback!')
 
 _LOW_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY = {
-    state: connectivity for state, connectivity in zip(
-        _types.ConnectivityState, interfaces.ChannelConnectivity)
+    state: connectivity
+    for state, connectivity in zip(_types.ConnectivityState,
+                                   interfaces.ChannelConnectivity)
 }
 
 
 class ConnectivityChannel(object):
 
-  def __init__(self, low_channel):
-    self._lock = threading.Lock()
-    self._low_channel = low_channel
-
-    self._polling = False
-    self._connectivity = None
-    self._try_to_connect = False
-    self._callbacks_and_connectivities = []
-    self._delivering = False
-
-  def _deliveries(self, connectivity):
-    callbacks_needing_update = []
-    for callback_and_connectivity in self._callbacks_and_connectivities:
-      callback, callback_connectivity = callback_and_connectivity
-      if callback_connectivity is not connectivity:
-        callbacks_needing_update.append(callback)
-        callback_and_connectivity[1] = connectivity
-    return callbacks_needing_update
-
-  def _deliver(self, initial_connectivity, initial_callbacks):
-    connectivity = initial_connectivity
-    callbacks = initial_callbacks
-    while True:
-      for callback in callbacks:
-        callable_util.call_logging_exceptions(
-            callback, _CHANNEL_SUBSCRIPTION_CALLBACK_ERROR_LOG_MESSAGE,
-            connectivity)
-      with self._lock:
-        callbacks = self._deliveries(self._connectivity)
-        if callbacks:
-          connectivity = self._connectivity
-        else:
-          self._delivering = False
-          return
-
-  def _spawn_delivery(self, connectivity, callbacks):
-    delivering_thread = threading.Thread(
-        target=self._deliver, args=(connectivity, callbacks,))
-    delivering_thread.start()
-    self._delivering = True
+    def __init__(self, low_channel):
+        self._lock = threading.Lock()
+        self._low_channel = low_channel
 
-  # TODO(issue 3064): Don't poll.
-  def _poll_connectivity(self, low_channel, initial_try_to_connect):
-    try_to_connect = initial_try_to_connect
-    low_connectivity = low_channel.check_connectivity_state(try_to_connect)
-    with self._lock:
-      self._connectivity = _LOW_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY[
-          low_connectivity]
-      callbacks = tuple(
-          callback for callback, unused_but_known_to_be_none_connectivity
-          in self._callbacks_and_connectivities)
-      for callback_and_connectivity in self._callbacks_and_connectivities:
-        callback_and_connectivity[1] = self._connectivity
-      if callbacks:
-        self._spawn_delivery(self._connectivity, callbacks)
-    completion_queue = _low.CompletionQueue()
-    while True:
-      low_channel.watch_connectivity_state(
-          low_connectivity, time.time() + 0.2, completion_queue, None)
-      event = completion_queue.next()
-      with self._lock:
-        if not self._callbacks_and_connectivities and not self._try_to_connect:
-          self._polling = False
-          self._connectivity = None
-          completion_queue.shutdown()
-          break
-        try_to_connect = self._try_to_connect
+        self._polling = False
+        self._connectivity = None
         self._try_to_connect = False
-      if event.success or try_to_connect:
+        self._callbacks_and_connectivities = []
+        self._delivering = False
+
+    def _deliveries(self, connectivity):
+        callbacks_needing_update = []
+        for callback_and_connectivity in self._callbacks_and_connectivities:
+            callback, callback_connectivity = callback_and_connectivity
+            if callback_connectivity is not connectivity:
+                callbacks_needing_update.append(callback)
+                callback_and_connectivity[1] = connectivity
+        return callbacks_needing_update
+
+    def _deliver(self, initial_connectivity, initial_callbacks):
+        connectivity = initial_connectivity
+        callbacks = initial_callbacks
+        while True:
+            for callback in callbacks:
+                callable_util.call_logging_exceptions(
+                    callback, _CHANNEL_SUBSCRIPTION_CALLBACK_ERROR_LOG_MESSAGE,
+                    connectivity)
+            with self._lock:
+                callbacks = self._deliveries(self._connectivity)
+                if callbacks:
+                    connectivity = self._connectivity
+                else:
+                    self._delivering = False
+                    return
+
+    def _spawn_delivery(self, connectivity, callbacks):
+        delivering_thread = threading.Thread(
+            target=self._deliver, args=(
+                connectivity,
+                callbacks,))
+        delivering_thread.start()
+        self._delivering = True
+
+    # TODO(issue 3064): Don't poll.
+    def _poll_connectivity(self, low_channel, initial_try_to_connect):
+        try_to_connect = initial_try_to_connect
         low_connectivity = low_channel.check_connectivity_state(try_to_connect)
         with self._lock:
-          self._connectivity = _LOW_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY[
-              low_connectivity]
-          if not self._delivering:
-            callbacks = self._deliveries(self._connectivity)
+            self._connectivity = _LOW_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY[
+                low_connectivity]
+            callbacks = tuple(
+                callback
+                for callback, unused_but_known_to_be_none_connectivity in
+                self._callbacks_and_connectivities)
+            for callback_and_connectivity in self._callbacks_and_connectivities:
+                callback_and_connectivity[1] = self._connectivity
             if callbacks:
-              self._spawn_delivery(self._connectivity, callbacks)
-
-  def subscribe(self, callback, try_to_connect):
-    with self._lock:
-      if not self._callbacks_and_connectivities and not self._polling:
-        polling_thread = threading.Thread(
-            target=self._poll_connectivity,
-            args=(self._low_channel, bool(try_to_connect)))
-        polling_thread.start()
-        self._polling = True
-        self._callbacks_and_connectivities.append([callback, None])
-      elif not self._delivering and self._connectivity is not None:
-        self._spawn_delivery(self._connectivity, (callback,))
-        self._try_to_connect |= bool(try_to_connect)
-        self._callbacks_and_connectivities.append(
-            [callback, self._connectivity])
-      else:
-        self._try_to_connect |= bool(try_to_connect)
-        self._callbacks_and_connectivities.append([callback, None])
-
-  def unsubscribe(self, callback):
-    with self._lock:
-      for index, (subscribed_callback, unused_connectivity) in enumerate(
-          self._callbacks_and_connectivities):
-        if callback == subscribed_callback:
-          self._callbacks_and_connectivities.pop(index)
-          break
-
-  def low_channel(self):
-    return self._low_channel
+                self._spawn_delivery(self._connectivity, callbacks)
+        completion_queue = _low.CompletionQueue()
+        while True:
+            low_channel.watch_connectivity_state(low_connectivity,
+                                                 time.time() + 0.2,
+                                                 completion_queue, None)
+            event = completion_queue.next()
+            with self._lock:
+                if not self._callbacks_and_connectivities and not self._try_to_connect:
+                    self._polling = False
+                    self._connectivity = None
+                    completion_queue.shutdown()
+                    break
+                try_to_connect = self._try_to_connect
+                self._try_to_connect = False
+            if event.success or try_to_connect:
+                low_connectivity = low_channel.check_connectivity_state(
+                    try_to_connect)
+                with self._lock:
+                    self._connectivity = _LOW_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY[
+                        low_connectivity]
+                    if not self._delivering:
+                        callbacks = self._deliveries(self._connectivity)
+                        if callbacks:
+                            self._spawn_delivery(self._connectivity, callbacks)
+
+    def subscribe(self, callback, try_to_connect):
+        with self._lock:
+            if not self._callbacks_and_connectivities and not self._polling:
+                polling_thread = threading.Thread(
+                    target=self._poll_connectivity,
+                    args=(self._low_channel, bool(try_to_connect)))
+                polling_thread.start()
+                self._polling = True
+                self._callbacks_and_connectivities.append([callback, None])
+            elif not self._delivering and self._connectivity is not None:
+                self._spawn_delivery(self._connectivity, (callback,))
+                self._try_to_connect |= bool(try_to_connect)
+                self._callbacks_and_connectivities.append(
+                    [callback, self._connectivity])
+            else:
+                self._try_to_connect |= bool(try_to_connect)
+                self._callbacks_and_connectivities.append([callback, None])
+
+    def unsubscribe(self, callback):
+        with self._lock:
+            for index, (subscribed_callback, unused_connectivity
+                       ) in enumerate(self._callbacks_and_connectivities):
+                if callback == subscribed_callback:
+                    self._callbacks_and_connectivities.pop(index)
+                    break
+
+    def low_channel(self):
+        return self._low_channel
diff --git a/src/python/grpcio/grpc/beta/_server_adaptations.py b/src/python/grpcio/grpc/beta/_server_adaptations.py
index cca4a1797a1ab8425e033de2860a2457b9ce2b23..bb7c0960d5d883c3336ff2e87b329fe1628e825b 100644
--- a/src/python/grpcio/grpc/beta/_server_adaptations.py
+++ b/src/python/grpcio/grpc/beta/_server_adaptations.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Translates gRPC's server-side API into gRPC's server-side Beta API."""
 
 import collections
@@ -47,329 +46,352 @@ _DEFAULT_POOL_SIZE = 8
 
 class _ServerProtocolContext(interfaces.GRPCServicerContext):
 
-  def __init__(self, servicer_context):
-    self._servicer_context = servicer_context
+    def __init__(self, servicer_context):
+        self._servicer_context = servicer_context
 
-  def peer(self):
-    return self._servicer_context.peer()
+    def peer(self):
+        return self._servicer_context.peer()
 
-  def disable_next_response_compression(self):
-    pass  # TODO(https://github.com/grpc/grpc/issues/4078): design, implement.
+    def disable_next_response_compression(self):
+        pass  # TODO(https://github.com/grpc/grpc/issues/4078): design, implement.
 
 
 class _FaceServicerContext(face.ServicerContext):
 
-  def __init__(self, servicer_context):
-    self._servicer_context = servicer_context
+    def __init__(self, servicer_context):
+        self._servicer_context = servicer_context
 
-  def is_active(self):
-    return self._servicer_context.is_active()
+    def is_active(self):
+        return self._servicer_context.is_active()
 
-  def time_remaining(self):
-    return self._servicer_context.time_remaining()
+    def time_remaining(self):
+        return self._servicer_context.time_remaining()
 
-  def add_abortion_callback(self, abortion_callback):
-    raise NotImplementedError(
-        'add_abortion_callback no longer supported server-side!')
+    def add_abortion_callback(self, abortion_callback):
+        raise NotImplementedError(
+            'add_abortion_callback no longer supported server-side!')
 
-  def cancel(self):
-    self._servicer_context.cancel()
+    def cancel(self):
+        self._servicer_context.cancel()
 
-  def protocol_context(self):
-    return _ServerProtocolContext(self._servicer_context)
+    def protocol_context(self):
+        return _ServerProtocolContext(self._servicer_context)
 
-  def invocation_metadata(self):
-    return _common.cygrpc_metadata(
-        self._servicer_context.invocation_metadata())
+    def invocation_metadata(self):
+        return _common.cygrpc_metadata(
+            self._servicer_context.invocation_metadata())
 
-  def initial_metadata(self, initial_metadata):
-    self._servicer_context.send_initial_metadata(initial_metadata)
+    def initial_metadata(self, initial_metadata):
+        self._servicer_context.send_initial_metadata(initial_metadata)
 
-  def terminal_metadata(self, terminal_metadata):
-    self._servicer_context.set_terminal_metadata(terminal_metadata)
+    def terminal_metadata(self, terminal_metadata):
+        self._servicer_context.set_terminal_metadata(terminal_metadata)
 
-  def code(self, code):
-    self._servicer_context.set_code(code)
+    def code(self, code):
+        self._servicer_context.set_code(code)
 
-  def details(self, details):
-    self._servicer_context.set_details(details)
+    def details(self, details):
+        self._servicer_context.set_details(details)
 
 
 def _adapt_unary_request_inline(unary_request_inline):
-  def adaptation(request, servicer_context):
-    return unary_request_inline(request, _FaceServicerContext(servicer_context))
-  return adaptation
+
+    def adaptation(request, servicer_context):
+        return unary_request_inline(request,
+                                    _FaceServicerContext(servicer_context))
+
+    return adaptation
 
 
 def _adapt_stream_request_inline(stream_request_inline):
-  def adaptation(request_iterator, servicer_context):
-    return stream_request_inline(
-        request_iterator, _FaceServicerContext(servicer_context))
-  return adaptation
+
+    def adaptation(request_iterator, servicer_context):
+        return stream_request_inline(request_iterator,
+                                     _FaceServicerContext(servicer_context))
+
+    return adaptation
 
 
 class _Callback(stream.Consumer):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._values = []
-    self._terminated = False
-    self._cancelled = False
-
-  def consume(self, value):
-    with self._condition:
-      self._values.append(value)
-      self._condition.notify_all()
-
-  def terminate(self):
-    with self._condition:
-      self._terminated = True
-      self._condition.notify_all()
-
-  def consume_and_terminate(self, value):
-    with self._condition:
-      self._values.append(value)
-      self._terminated = True
-      self._condition.notify_all()
-
-  def cancel(self):
-    with self._condition:
-      self._cancelled = True
-      self._condition.notify_all()
-
-  def draw_one_value(self):
-    with self._condition:
-      while True:
-        if self._cancelled:
-          raise abandonment.Abandoned()
-        elif self._values:
-          return self._values.pop(0)
-        elif self._terminated:
-          return None
-        else:
-          self._condition.wait()
-
-  def draw_all_values(self):
-    with self._condition:
-      while True:
-        if self._cancelled:
-          raise abandonment.Abandoned()
-        elif self._terminated:
-          all_values = tuple(self._values)
-          self._values = None
-          return all_values
-        else:
-          self._condition.wait()
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._values = []
+        self._terminated = False
+        self._cancelled = False
+
+    def consume(self, value):
+        with self._condition:
+            self._values.append(value)
+            self._condition.notify_all()
+
+    def terminate(self):
+        with self._condition:
+            self._terminated = True
+            self._condition.notify_all()
+
+    def consume_and_terminate(self, value):
+        with self._condition:
+            self._values.append(value)
+            self._terminated = True
+            self._condition.notify_all()
+
+    def cancel(self):
+        with self._condition:
+            self._cancelled = True
+            self._condition.notify_all()
+
+    def draw_one_value(self):
+        with self._condition:
+            while True:
+                if self._cancelled:
+                    raise abandonment.Abandoned()
+                elif self._values:
+                    return self._values.pop(0)
+                elif self._terminated:
+                    return None
+                else:
+                    self._condition.wait()
+
+    def draw_all_values(self):
+        with self._condition:
+            while True:
+                if self._cancelled:
+                    raise abandonment.Abandoned()
+                elif self._terminated:
+                    all_values = tuple(self._values)
+                    self._values = None
+                    return all_values
+                else:
+                    self._condition.wait()
 
 
 def _run_request_pipe_thread(request_iterator, request_consumer,
                              servicer_context):
-  thread_joined = threading.Event()
-  def pipe_requests():
-    for request in request_iterator:
-      if not servicer_context.is_active() or thread_joined.is_set():
-        return
-      request_consumer.consume(request)
-      if not servicer_context.is_active() or thread_joined.is_set():
-        return
-    request_consumer.terminate()
+    thread_joined = threading.Event()
+
+    def pipe_requests():
+        for request in request_iterator:
+            if not servicer_context.is_active() or thread_joined.is_set():
+                return
+            request_consumer.consume(request)
+            if not servicer_context.is_active() or thread_joined.is_set():
+                return
+        request_consumer.terminate()
 
-  def stop_request_pipe(timeout):
-    thread_joined.set()
+    def stop_request_pipe(timeout):
+        thread_joined.set()
 
-  request_pipe_thread = _common.CleanupThread(
-      stop_request_pipe, target=pipe_requests)
-  request_pipe_thread.start()
+    request_pipe_thread = _common.CleanupThread(
+        stop_request_pipe, target=pipe_requests)
+    request_pipe_thread.start()
 
 
 def _adapt_unary_unary_event(unary_unary_event):
-  def adaptation(request, servicer_context):
-    callback = _Callback()
-    if not servicer_context.add_callback(callback.cancel):
-      raise abandonment.Abandoned()
-    unary_unary_event(
-        request, callback.consume_and_terminate,
-        _FaceServicerContext(servicer_context))
-    return callback.draw_all_values()[0]
-  return adaptation
+
+    def adaptation(request, servicer_context):
+        callback = _Callback()
+        if not servicer_context.add_callback(callback.cancel):
+            raise abandonment.Abandoned()
+        unary_unary_event(request, callback.consume_and_terminate,
+                          _FaceServicerContext(servicer_context))
+        return callback.draw_all_values()[0]
+
+    return adaptation
 
 
 def _adapt_unary_stream_event(unary_stream_event):
-  def adaptation(request, servicer_context):
-    callback = _Callback()
-    if not servicer_context.add_callback(callback.cancel):
-      raise abandonment.Abandoned()
-    unary_stream_event(
-        request, callback, _FaceServicerContext(servicer_context))
-    while True:
-      response = callback.draw_one_value()
-      if response is None:
-        return
-      else:
-        yield response
-  return adaptation
+
+    def adaptation(request, servicer_context):
+        callback = _Callback()
+        if not servicer_context.add_callback(callback.cancel):
+            raise abandonment.Abandoned()
+        unary_stream_event(request, callback,
+                           _FaceServicerContext(servicer_context))
+        while True:
+            response = callback.draw_one_value()
+            if response is None:
+                return
+            else:
+                yield response
+
+    return adaptation
 
 
 def _adapt_stream_unary_event(stream_unary_event):
-  def adaptation(request_iterator, servicer_context):
-    callback = _Callback()
-    if not servicer_context.add_callback(callback.cancel):
-      raise abandonment.Abandoned()
-    request_consumer = stream_unary_event(
-        callback.consume_and_terminate, _FaceServicerContext(servicer_context))
-    _run_request_pipe_thread(
-        request_iterator, request_consumer, servicer_context)
-    return callback.draw_all_values()[0]
-  return adaptation
+
+    def adaptation(request_iterator, servicer_context):
+        callback = _Callback()
+        if not servicer_context.add_callback(callback.cancel):
+            raise abandonment.Abandoned()
+        request_consumer = stream_unary_event(
+            callback.consume_and_terminate,
+            _FaceServicerContext(servicer_context))
+        _run_request_pipe_thread(request_iterator, request_consumer,
+                                 servicer_context)
+        return callback.draw_all_values()[0]
+
+    return adaptation
 
 
 def _adapt_stream_stream_event(stream_stream_event):
-  def adaptation(request_iterator, servicer_context):
-    callback = _Callback()
-    if not servicer_context.add_callback(callback.cancel):
-      raise abandonment.Abandoned()
-    request_consumer = stream_stream_event(
-        callback, _FaceServicerContext(servicer_context))
-    _run_request_pipe_thread(
-        request_iterator, request_consumer, servicer_context)
-    while True:
-      response = callback.draw_one_value()
-      if response is None:
-        return
-      else:
-        yield response
-  return adaptation
+
+    def adaptation(request_iterator, servicer_context):
+        callback = _Callback()
+        if not servicer_context.add_callback(callback.cancel):
+            raise abandonment.Abandoned()
+        request_consumer = stream_stream_event(
+            callback, _FaceServicerContext(servicer_context))
+        _run_request_pipe_thread(request_iterator, request_consumer,
+                                 servicer_context)
+        while True:
+            response = callback.draw_one_value()
+            if response is None:
+                return
+            else:
+                yield response
+
+    return adaptation
 
 
 class _SimpleMethodHandler(
-    collections.namedtuple(
-        '_MethodHandler',
-        ('request_streaming', 'response_streaming', 'request_deserializer',
-         'response_serializer', 'unary_unary', 'unary_stream', 'stream_unary',
-         'stream_stream',)),
-    grpc.RpcMethodHandler):
-  pass
-
-
-def _simple_method_handler(
-    implementation, request_deserializer, response_serializer):
-  if implementation.style is style.Service.INLINE:
-    if implementation.cardinality is cardinality.Cardinality.UNARY_UNARY:
-      return _SimpleMethodHandler(
-          False, False, request_deserializer, response_serializer,
-          _adapt_unary_request_inline(implementation.unary_unary_inline), None,
-          None, None)
-    elif implementation.cardinality is cardinality.Cardinality.UNARY_STREAM:
-      return _SimpleMethodHandler(
-          False, True, request_deserializer, response_serializer, None,
-          _adapt_unary_request_inline(implementation.unary_stream_inline), None,
-          None)
-    elif implementation.cardinality is cardinality.Cardinality.STREAM_UNARY:
-      return _SimpleMethodHandler(
-          True, False, request_deserializer, response_serializer, None, None,
-          _adapt_stream_request_inline(implementation.stream_unary_inline),
-          None)
-    elif implementation.cardinality is cardinality.Cardinality.STREAM_STREAM:
-      return _SimpleMethodHandler(
-          True, True, request_deserializer, response_serializer, None, None,
-          None,
-          _adapt_stream_request_inline(implementation.stream_stream_inline))
-  elif implementation.style is style.Service.EVENT:
-    if implementation.cardinality is cardinality.Cardinality.UNARY_UNARY:
-      return _SimpleMethodHandler(
-          False, False, request_deserializer, response_serializer,
-          _adapt_unary_unary_event(implementation.unary_unary_event), None,
-          None, None)
-    elif implementation.cardinality is cardinality.Cardinality.UNARY_STREAM:
-      return _SimpleMethodHandler(
-          False, True, request_deserializer, response_serializer, None,
-          _adapt_unary_stream_event(implementation.unary_stream_event), None,
-          None)
-    elif implementation.cardinality is cardinality.Cardinality.STREAM_UNARY:
-      return _SimpleMethodHandler(
-          True, False, request_deserializer, response_serializer, None, None,
-          _adapt_stream_unary_event(implementation.stream_unary_event), None)
-    elif implementation.cardinality is cardinality.Cardinality.STREAM_STREAM:
-      return _SimpleMethodHandler(
-          True, True, request_deserializer, response_serializer, None, None,
-          None, _adapt_stream_stream_event(implementation.stream_stream_event))
+        collections.namedtuple('_MethodHandler', (
+            'request_streaming',
+            'response_streaming',
+            'request_deserializer',
+            'response_serializer',
+            'unary_unary',
+            'unary_stream',
+            'stream_unary',
+            'stream_stream',)), grpc.RpcMethodHandler):
+    pass
+
+
+def _simple_method_handler(implementation, request_deserializer,
+                           response_serializer):
+    if implementation.style is style.Service.INLINE:
+        if implementation.cardinality is cardinality.Cardinality.UNARY_UNARY:
+            return _SimpleMethodHandler(
+                False, False, request_deserializer, response_serializer,
+                _adapt_unary_request_inline(implementation.unary_unary_inline),
+                None, None, None)
+        elif implementation.cardinality is cardinality.Cardinality.UNARY_STREAM:
+            return _SimpleMethodHandler(
+                False, True, request_deserializer, response_serializer, None,
+                _adapt_unary_request_inline(implementation.unary_stream_inline),
+                None, None)
+        elif implementation.cardinality is cardinality.Cardinality.STREAM_UNARY:
+            return _SimpleMethodHandler(True, False, request_deserializer,
+                                        response_serializer, None, None,
+                                        _adapt_stream_request_inline(
+                                            implementation.stream_unary_inline),
+                                        None)
+        elif implementation.cardinality is cardinality.Cardinality.STREAM_STREAM:
+            return _SimpleMethodHandler(
+                True, True, request_deserializer, response_serializer, None,
+                None, None,
+                _adapt_stream_request_inline(
+                    implementation.stream_stream_inline))
+    elif implementation.style is style.Service.EVENT:
+        if implementation.cardinality is cardinality.Cardinality.UNARY_UNARY:
+            return _SimpleMethodHandler(
+                False, False, request_deserializer, response_serializer,
+                _adapt_unary_unary_event(implementation.unary_unary_event),
+                None, None, None)
+        elif implementation.cardinality is cardinality.Cardinality.UNARY_STREAM:
+            return _SimpleMethodHandler(
+                False, True, request_deserializer, response_serializer, None,
+                _adapt_unary_stream_event(implementation.unary_stream_event),
+                None, None)
+        elif implementation.cardinality is cardinality.Cardinality.STREAM_UNARY:
+            return _SimpleMethodHandler(
+                True, False, request_deserializer, response_serializer, None,
+                None,
+                _adapt_stream_unary_event(implementation.stream_unary_event),
+                None)
+        elif implementation.cardinality is cardinality.Cardinality.STREAM_STREAM:
+            return _SimpleMethodHandler(
+                True, True, request_deserializer, response_serializer, None,
+                None, None,
+                _adapt_stream_stream_event(implementation.stream_stream_event))
 
 
 def _flatten_method_pair_map(method_pair_map):
-  method_pair_map = method_pair_map or {}
-  flat_map = {}
-  for method_pair in method_pair_map:
-    method = _common.fully_qualified_method(method_pair[0], method_pair[1])
-    flat_map[method] = method_pair_map[method_pair]
-  return flat_map
+    method_pair_map = method_pair_map or {}
+    flat_map = {}
+    for method_pair in method_pair_map:
+        method = _common.fully_qualified_method(method_pair[0], method_pair[1])
+        flat_map[method] = method_pair_map[method_pair]
+    return flat_map
 
 
 class _GenericRpcHandler(grpc.GenericRpcHandler):
 
-  def __init__(
-      self, method_implementations, multi_method_implementation,
-      request_deserializers, response_serializers):
-    self._method_implementations = _flatten_method_pair_map(
-        method_implementations)
-    self._request_deserializers = _flatten_method_pair_map(
-        request_deserializers)
-    self._response_serializers = _flatten_method_pair_map(
-        response_serializers)
-    self._multi_method_implementation = multi_method_implementation
-
-  def service(self, handler_call_details):
-    method_implementation = self._method_implementations.get(
-        handler_call_details.method)
-    if method_implementation is not None:
-      return _simple_method_handler(
-          method_implementation,
-          self._request_deserializers.get(handler_call_details.method),
-          self._response_serializers.get(handler_call_details.method))
-    elif self._multi_method_implementation is None:
-      return None
-    else:
-      try:
-        return None  #TODO(nathaniel): call the multimethod.
-      except face.NoSuchMethodError:
-        return None
+    def __init__(self, method_implementations, multi_method_implementation,
+                 request_deserializers, response_serializers):
+        self._method_implementations = _flatten_method_pair_map(
+            method_implementations)
+        self._request_deserializers = _flatten_method_pair_map(
+            request_deserializers)
+        self._response_serializers = _flatten_method_pair_map(
+            response_serializers)
+        self._multi_method_implementation = multi_method_implementation
+
+    def service(self, handler_call_details):
+        method_implementation = self._method_implementations.get(
+            handler_call_details.method)
+        if method_implementation is not None:
+            return _simple_method_handler(
+                method_implementation,
+                self._request_deserializers.get(handler_call_details.method),
+                self._response_serializers.get(handler_call_details.method))
+        elif self._multi_method_implementation is None:
+            return None
+        else:
+            try:
+                return None  #TODO(nathaniel): call the multimethod.
+            except face.NoSuchMethodError:
+                return None
 
 
 class _Server(interfaces.Server):
 
-  def __init__(self, server):
-    self._server = server
+    def __init__(self, server):
+        self._server = server
 
-  def add_insecure_port(self, address):
-    return self._server.add_insecure_port(address)
+    def add_insecure_port(self, address):
+        return self._server.add_insecure_port(address)
 
-  def add_secure_port(self, address, server_credentials):
-    return self._server.add_secure_port(address, server_credentials)
+    def add_secure_port(self, address, server_credentials):
+        return self._server.add_secure_port(address, server_credentials)
 
-  def start(self):
-    self._server.start()
+    def start(self):
+        self._server.start()
 
-  def stop(self, grace):
-    return self._server.stop(grace)
+    def stop(self, grace):
+        return self._server.stop(grace)
 
-  def __enter__(self):
-    self._server.start()
-    return self
+    def __enter__(self):
+        self._server.start()
+        return self
 
-  def __exit__(self, exc_type, exc_val, exc_tb):
-    self._server.stop(None)
-    return False
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self._server.stop(None)
+        return False
 
 
-def server(
-    service_implementations, multi_method_implementation, request_deserializers,
-    response_serializers, thread_pool, thread_pool_size):
-  generic_rpc_handler = _GenericRpcHandler(
-      service_implementations, multi_method_implementation,
-      request_deserializers, response_serializers)
-  if thread_pool is None:
-    effective_thread_pool = logging_pool.pool(
-        _DEFAULT_POOL_SIZE if thread_pool_size is None else thread_pool_size)
-  else:
-    effective_thread_pool = thread_pool
-  return _Server(
-      grpc.server(effective_thread_pool, handlers=(generic_rpc_handler,)))
+def server(service_implementations, multi_method_implementation,
+           request_deserializers, response_serializers, thread_pool,
+           thread_pool_size):
+    generic_rpc_handler = _GenericRpcHandler(
+        service_implementations, multi_method_implementation,
+        request_deserializers, response_serializers)
+    if thread_pool is None:
+        effective_thread_pool = logging_pool.pool(_DEFAULT_POOL_SIZE
+                                                  if thread_pool_size is None
+                                                  else thread_pool_size)
+    else:
+        effective_thread_pool = thread_pool
+    return _Server(
+        grpc.server(
+            effective_thread_pool, handlers=(generic_rpc_handler,)))
diff --git a/src/python/grpcio/grpc/beta/implementations.py b/src/python/grpcio/grpc/beta/implementations.py
index ab25fd5eec79ce78b01cbae04f8c94ca7107c2f9..7093852278112c69b1dad8fe06c79645bc09764c 100644
--- a/src/python/grpcio/grpc/beta/implementations.py
+++ b/src/python/grpcio/grpc/beta/implementations.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Entry points into the Beta API of gRPC Python."""
 
 # threading is referenced from specification in this module.
@@ -43,7 +42,6 @@ from grpc.beta import interfaces
 from grpc.framework.common import cardinality  # pylint: disable=unused-import
 from grpc.framework.interfaces.face import face  # pylint: disable=unused-import
 
-
 ChannelCredentials = grpc.ChannelCredentials
 ssl_channel_credentials = grpc.ssl_channel_credentials
 CallCredentials = grpc.CallCredentials
@@ -51,7 +49,7 @@ metadata_call_credentials = grpc.metadata_call_credentials
 
 
 def google_call_credentials(credentials):
-  """Construct CallCredentials from GoogleCredentials.
+    """Construct CallCredentials from GoogleCredentials.
 
   Args:
     credentials: A GoogleCredentials object from the oauth2client library.
@@ -59,7 +57,8 @@ def google_call_credentials(credentials):
   Returns:
     A CallCredentials object for use in a GRPCCallOptions object.
   """
-  return metadata_call_credentials(_auth.GoogleCallCredentials(credentials))
+    return metadata_call_credentials(_auth.GoogleCallCredentials(credentials))
+
 
 access_token_call_credentials = grpc.access_token_call_credentials
 composite_call_credentials = grpc.composite_call_credentials
@@ -67,18 +66,18 @@ composite_channel_credentials = grpc.composite_channel_credentials
 
 
 class Channel(object):
-  """A channel to a remote host through which RPCs may be conducted.
+    """A channel to a remote host through which RPCs may be conducted.
 
   Only the "subscribe" and "unsubscribe" methods are supported for application
   use. This class' instance constructor and all other attributes are
   unsupported.
   """
 
-  def __init__(self, channel):
-    self._channel = channel
+    def __init__(self, channel):
+        self._channel = channel
 
-  def subscribe(self, callback, try_to_connect=None):
-    """Subscribes to this Channel's connectivity.
+    def subscribe(self, callback, try_to_connect=None):
+        """Subscribes to this Channel's connectivity.
 
     Args:
       callback: A callable to be invoked and passed an
@@ -90,20 +89,20 @@ class Channel(object):
         attempt to connect if it is not already connected and ready to conduct
         RPCs.
     """
-    self._channel.subscribe(callback, try_to_connect=try_to_connect)
+        self._channel.subscribe(callback, try_to_connect=try_to_connect)
 
-  def unsubscribe(self, callback):
-    """Unsubscribes a callback from this Channel's connectivity.
+    def unsubscribe(self, callback):
+        """Unsubscribes a callback from this Channel's connectivity.
 
     Args:
       callback: A callable previously registered with this Channel from having
         been passed to its "subscribe" method.
     """
-    self._channel.unsubscribe(callback)
+        self._channel.unsubscribe(callback)
 
 
 def insecure_channel(host, port):
-  """Creates an insecure Channel to a remote host.
+    """Creates an insecure Channel to a remote host.
 
   Args:
     host: The name of the remote host to which to connect.
@@ -113,13 +112,13 @@ def insecure_channel(host, port):
   Returns:
     A Channel to the remote host through which RPCs may be conducted.
   """
-  channel = grpc.insecure_channel(
-      host if port is None else '%s:%d' % (host, port))
-  return Channel(channel)
+    channel = grpc.insecure_channel(host
+                                    if port is None else '%s:%d' % (host, port))
+    return Channel(channel)
 
 
 def secure_channel(host, port, channel_credentials):
-  """Creates a secure Channel to a remote host.
+    """Creates a secure Channel to a remote host.
 
   Args:
     host: The name of the remote host to which to connect.
@@ -130,37 +129,39 @@ def secure_channel(host, port, channel_credentials):
   Returns:
     A secure Channel to the remote host through which RPCs may be conducted.
   """
-  channel = grpc.secure_channel(
-      host if port is None else '%s:%d' % (host, port), channel_credentials)
-  return Channel(channel)
+    channel = grpc.secure_channel(host if port is None else
+                                  '%s:%d' % (host, port), channel_credentials)
+    return Channel(channel)
 
 
 class StubOptions(object):
-  """A value encapsulating the various options for creation of a Stub.
+    """A value encapsulating the various options for creation of a Stub.
 
   This class and its instances have no supported interface - it exists to define
   the type of its instances and its instances exist to be passed to other
   functions.
   """
 
-  def __init__(
-      self, host, request_serializers, response_deserializers,
-      metadata_transformer, thread_pool, thread_pool_size):
-    self.host = host
-    self.request_serializers = request_serializers
-    self.response_deserializers = response_deserializers
-    self.metadata_transformer = metadata_transformer
-    self.thread_pool = thread_pool
-    self.thread_pool_size = thread_pool_size
+    def __init__(self, host, request_serializers, response_deserializers,
+                 metadata_transformer, thread_pool, thread_pool_size):
+        self.host = host
+        self.request_serializers = request_serializers
+        self.response_deserializers = response_deserializers
+        self.metadata_transformer = metadata_transformer
+        self.thread_pool = thread_pool
+        self.thread_pool_size = thread_pool_size
 
-_EMPTY_STUB_OPTIONS = StubOptions(
-    None, None, None, None, None, None)
 
+_EMPTY_STUB_OPTIONS = StubOptions(None, None, None, None, None, None)
 
-def stub_options(
-    host=None, request_serializers=None, response_deserializers=None,
-    metadata_transformer=None, thread_pool=None, thread_pool_size=None):
-  """Creates a StubOptions value to be passed at stub creation.
+
+def stub_options(host=None,
+                 request_serializers=None,
+                 response_deserializers=None,
+                 metadata_transformer=None,
+                 thread_pool=None,
+                 thread_pool_size=None):
+    """Creates a StubOptions value to be passed at stub creation.
 
   All parameters are optional and should always be passed by keyword.
 
@@ -180,13 +181,12 @@ def stub_options(
   Returns:
     A StubOptions value created from the passed parameters.
   """
-  return StubOptions(
-      host, request_serializers, response_deserializers,
-      metadata_transformer, thread_pool, thread_pool_size)
+    return StubOptions(host, request_serializers, response_deserializers,
+                       metadata_transformer, thread_pool, thread_pool_size)
 
 
 def generic_stub(channel, options=None):
-  """Creates a face.GenericStub on which RPCs can be made.
+    """Creates a face.GenericStub on which RPCs can be made.
 
   Args:
     channel: A Channel for use by the created stub.
@@ -195,16 +195,17 @@ def generic_stub(channel, options=None):
   Returns:
     A face.GenericStub on which RPCs can be made.
   """
-  effective_options = _EMPTY_STUB_OPTIONS if options is None else options
-  return _client_adaptations.generic_stub(
-      channel._channel,  # pylint: disable=protected-access
-      effective_options.host, effective_options.metadata_transformer,
-      effective_options.request_serializers,
-      effective_options.response_deserializers)
+    effective_options = _EMPTY_STUB_OPTIONS if options is None else options
+    return _client_adaptations.generic_stub(
+        channel._channel,  # pylint: disable=protected-access
+        effective_options.host,
+        effective_options.metadata_transformer,
+        effective_options.request_serializers,
+        effective_options.response_deserializers)
 
 
 def dynamic_stub(channel, service, cardinalities, options=None):
-  """Creates a face.DynamicStub with which RPCs can be invoked.
+    """Creates a face.DynamicStub with which RPCs can be invoked.
 
   Args:
     channel: A Channel for the returned face.DynamicStub to use.
@@ -217,13 +218,15 @@ def dynamic_stub(channel, service, cardinalities, options=None):
   Returns:
     A face.DynamicStub with which RPCs can be invoked.
   """
-  effective_options = StubOptions() if options is None else options
-  return _client_adaptations.dynamic_stub(
-      channel._channel,  # pylint: disable=protected-access
-      service, cardinalities, effective_options.host,
-      effective_options.metadata_transformer,
-      effective_options.request_serializers,
-      effective_options.response_deserializers)
+    effective_options = StubOptions() if options is None else options
+    return _client_adaptations.dynamic_stub(
+        channel._channel,  # pylint: disable=protected-access
+        service,
+        cardinalities,
+        effective_options.host,
+        effective_options.metadata_transformer,
+        effective_options.request_serializers,
+        effective_options.response_deserializers)
 
 
 ServerCredentials = grpc.ServerCredentials
@@ -231,34 +234,36 @@ ssl_server_credentials = grpc.ssl_server_credentials
 
 
 class ServerOptions(object):
-  """A value encapsulating the various options for creation of a Server.
+    """A value encapsulating the various options for creation of a Server.
 
   This class and its instances have no supported interface - it exists to define
   the type of its instances and its instances exist to be passed to other
   functions.
   """
 
-  def __init__(
-      self, multi_method_implementation, request_deserializers,
-      response_serializers, thread_pool, thread_pool_size, default_timeout,
-      maximum_timeout):
-    self.multi_method_implementation = multi_method_implementation
-    self.request_deserializers = request_deserializers
-    self.response_serializers = response_serializers
-    self.thread_pool = thread_pool
-    self.thread_pool_size = thread_pool_size
-    self.default_timeout = default_timeout
-    self.maximum_timeout = maximum_timeout
+    def __init__(self, multi_method_implementation, request_deserializers,
+                 response_serializers, thread_pool, thread_pool_size,
+                 default_timeout, maximum_timeout):
+        self.multi_method_implementation = multi_method_implementation
+        self.request_deserializers = request_deserializers
+        self.response_serializers = response_serializers
+        self.thread_pool = thread_pool
+        self.thread_pool_size = thread_pool_size
+        self.default_timeout = default_timeout
+        self.maximum_timeout = maximum_timeout
+
 
-_EMPTY_SERVER_OPTIONS = ServerOptions(
-    None, None, None, None, None, None, None)
+_EMPTY_SERVER_OPTIONS = ServerOptions(None, None, None, None, None, None, None)
 
 
-def server_options(
-    multi_method_implementation=None, request_deserializers=None,
-    response_serializers=None, thread_pool=None, thread_pool_size=None,
-    default_timeout=None, maximum_timeout=None):
-  """Creates a ServerOptions value to be passed at server creation.
+def server_options(multi_method_implementation=None,
+                   request_deserializers=None,
+                   response_serializers=None,
+                   thread_pool=None,
+                   thread_pool_size=None,
+                   default_timeout=None,
+                   maximum_timeout=None):
+    """Creates a ServerOptions value to be passed at server creation.
 
   All parameters are optional and should always be passed by keyword.
 
@@ -282,13 +287,13 @@ def server_options(
   Returns:
     A StubOptions value created from the passed parameters.
   """
-  return ServerOptions(
-      multi_method_implementation, request_deserializers, response_serializers,
-      thread_pool, thread_pool_size, default_timeout, maximum_timeout)
+    return ServerOptions(multi_method_implementation, request_deserializers,
+                         response_serializers, thread_pool, thread_pool_size,
+                         default_timeout, maximum_timeout)
 
 
 def server(service_implementations, options=None):
-  """Creates an interfaces.Server with which RPCs can be serviced.
+    """Creates an interfaces.Server with which RPCs can be serviced.
 
   Args:
     service_implementations: A dictionary from service name-method name pair to
@@ -299,9 +304,9 @@ def server(service_implementations, options=None):
   Returns:
     An interfaces.Server with which RPCs can be serviced.
   """
-  effective_options = _EMPTY_SERVER_OPTIONS if options is None else options
-  return _server_adaptations.server(
-      service_implementations, effective_options.multi_method_implementation,
-      effective_options.request_deserializers,
-      effective_options.response_serializers, effective_options.thread_pool,
-      effective_options.thread_pool_size)
+    effective_options = _EMPTY_SERVER_OPTIONS if options is None else options
+    return _server_adaptations.server(
+        service_implementations, effective_options.multi_method_implementation,
+        effective_options.request_deserializers,
+        effective_options.response_serializers, effective_options.thread_pool,
+        effective_options.thread_pool_size)
diff --git a/src/python/grpcio/grpc/beta/interfaces.py b/src/python/grpcio/grpc/beta/interfaces.py
index 90f6bbbfcc11b415831ca4d53da70459b725c145..361d1bcffeaa803b0eab95d104168e5554ad6c08 100644
--- a/src/python/grpcio/grpc/beta/interfaces.py
+++ b/src/python/grpcio/grpc/beta/interfaces.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Constants and interfaces of the Beta API of gRPC Python."""
 
 import abc
@@ -43,21 +42,21 @@ StatusCode = grpc.StatusCode
 
 
 class GRPCCallOptions(object):
-  """A value encapsulating gRPC-specific options passed on RPC invocation.
+    """A value encapsulating gRPC-specific options passed on RPC invocation.
 
   This class and its instances have no supported interface - it exists to
   define the type of its instances and its instances exist to be passed to
   other functions.
   """
 
-  def __init__(self, disable_compression, subcall_of, credentials):
-    self.disable_compression = disable_compression
-    self.subcall_of = subcall_of
-    self.credentials = credentials
+    def __init__(self, disable_compression, subcall_of, credentials):
+        self.disable_compression = disable_compression
+        self.subcall_of = subcall_of
+        self.credentials = credentials
 
 
 def grpc_call_options(disable_compression=False, credentials=None):
-  """Creates a GRPCCallOptions value to be passed at RPC invocation.
+    """Creates a GRPCCallOptions value to be passed at RPC invocation.
 
   All parameters are optional and should always be passed by keyword.
 
@@ -67,7 +66,8 @@ def grpc_call_options(disable_compression=False, credentials=None):
       request-unary RPCs.
     credentials: A CallCredentials object to use for the invoked RPC.
   """
-  return GRPCCallOptions(disable_compression, None, credentials)
+    return GRPCCallOptions(disable_compression, None, credentials)
+
 
 GRPCAuthMetadataContext = grpc.AuthMetadataContext
 GRPCAuthMetadataPluginCallback = grpc.AuthMetadataPluginCallback
@@ -75,38 +75,38 @@ GRPCAuthMetadataPlugin = grpc.AuthMetadataPlugin
 
 
 class GRPCServicerContext(six.with_metaclass(abc.ABCMeta)):
-  """Exposes gRPC-specific options and behaviors to code servicing RPCs."""
+    """Exposes gRPC-specific options and behaviors to code servicing RPCs."""
 
-  @abc.abstractmethod
-  def peer(self):
-    """Identifies the peer that invoked the RPC being serviced.
+    @abc.abstractmethod
+    def peer(self):
+        """Identifies the peer that invoked the RPC being serviced.
 
     Returns:
       A string identifying the peer that invoked the RPC being serviced.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def disable_next_response_compression(self):
-    """Disables compression of the next response passed by the application."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def disable_next_response_compression(self):
+        """Disables compression of the next response passed by the application."""
+        raise NotImplementedError()
 
 
 class GRPCInvocationContext(six.with_metaclass(abc.ABCMeta)):
-  """Exposes gRPC-specific options and behaviors to code invoking RPCs."""
+    """Exposes gRPC-specific options and behaviors to code invoking RPCs."""
 
-  @abc.abstractmethod
-  def disable_next_request_compression(self):
-    """Disables compression of the next request passed by the application."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def disable_next_request_compression(self):
+        """Disables compression of the next request passed by the application."""
+        raise NotImplementedError()
 
 
 class Server(six.with_metaclass(abc.ABCMeta)):
-  """Services RPCs."""
+    """Services RPCs."""
 
-  @abc.abstractmethod
-  def add_insecure_port(self, address):
-    """Reserves a port for insecure RPC service once this Server becomes active.
+    @abc.abstractmethod
+    def add_insecure_port(self, address):
+        """Reserves a port for insecure RPC service once this Server becomes active.
 
     This method may only be called before calling this Server's start method is
     called.
@@ -120,11 +120,11 @@ class Server(six.with_metaclass(abc.ABCMeta)):
         in the passed address, but will likely be different if the port number
         contained in the passed address was zero.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def add_secure_port(self, address, server_credentials):
-    """Reserves a port for secure RPC service after this Server becomes active.
+    @abc.abstractmethod
+    def add_secure_port(self, address, server_credentials):
+        """Reserves a port for secure RPC service after this Server becomes active.
 
     This method may only be called before calling this Server's start method is
     called.
@@ -139,20 +139,20 @@ class Server(six.with_metaclass(abc.ABCMeta)):
         in the passed address, but will likely be different if the port number
         contained in the passed address was zero.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def start(self):
-    """Starts this Server's service of RPCs.
+    @abc.abstractmethod
+    def start(self):
+        """Starts this Server's service of RPCs.
 
     This method may only be called while the server is not serving RPCs (i.e. it
     is not idempotent).
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stop(self, grace):
-    """Stops this Server's service of RPCs.
+    @abc.abstractmethod
+    def stop(self, grace):
+        """Stops this Server's service of RPCs.
 
     All calls to this method immediately stop service of new RPCs. When existing
     RPCs are aborted is controlled by the grace period parameter passed to this
@@ -177,4 +177,4 @@ class Server(six.with_metaclass(abc.ABCMeta)):
       at the time it was stopped or if all RPCs that it had underway completed
       very early in the grace period).
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
diff --git a/src/python/grpcio/grpc/beta/utilities.py b/src/python/grpcio/grpc/beta/utilities.py
index fb07a765795b68a6875c22ab1fbd21d8d68ec0d4..60525350a7c49f8ef0e805903b0032404fce237a 100644
--- a/src/python/grpcio/grpc/beta/utilities.py
+++ b/src/python/grpcio/grpc/beta/utilities.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Utilities for the gRPC Python Beta API."""
 
 import threading
@@ -44,107 +43,107 @@ _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE = (
 
 class _ChannelReadyFuture(future.Future):
 
-  def __init__(self, channel):
-    self._condition = threading.Condition()
-    self._channel = channel
-
-    self._matured = False
-    self._cancelled = False
-    self._done_callbacks = []
-
-  def _block(self, timeout):
-    until = None if timeout is None else time.time() + timeout
-    with self._condition:
-      while True:
-        if self._cancelled:
-          raise future.CancelledError()
-        elif self._matured:
-          return
-        else:
-          if until is None:
-            self._condition.wait()
-          else:
-            remaining = until - time.time()
-            if remaining < 0:
-              raise future.TimeoutError()
+    def __init__(self, channel):
+        self._condition = threading.Condition()
+        self._channel = channel
+
+        self._matured = False
+        self._cancelled = False
+        self._done_callbacks = []
+
+    def _block(self, timeout):
+        until = None if timeout is None else time.time() + timeout
+        with self._condition:
+            while True:
+                if self._cancelled:
+                    raise future.CancelledError()
+                elif self._matured:
+                    return
+                else:
+                    if until is None:
+                        self._condition.wait()
+                    else:
+                        remaining = until - time.time()
+                        if remaining < 0:
+                            raise future.TimeoutError()
+                        else:
+                            self._condition.wait(timeout=remaining)
+
+    def _update(self, connectivity):
+        with self._condition:
+            if (not self._cancelled and
+                    connectivity is interfaces.ChannelConnectivity.READY):
+                self._matured = True
+                self._channel.unsubscribe(self._update)
+                self._condition.notify_all()
+                done_callbacks = tuple(self._done_callbacks)
+                self._done_callbacks = None
+            else:
+                return
+
+        for done_callback in done_callbacks:
+            callable_util.call_logging_exceptions(
+                done_callback, _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE, self)
+
+    def cancel(self):
+        with self._condition:
+            if not self._matured:
+                self._cancelled = True
+                self._channel.unsubscribe(self._update)
+                self._condition.notify_all()
+                done_callbacks = tuple(self._done_callbacks)
+                self._done_callbacks = None
             else:
-              self._condition.wait(timeout=remaining)
-
-  def _update(self, connectivity):
-    with self._condition:
-      if (not self._cancelled and
-          connectivity is interfaces.ChannelConnectivity.READY):
-        self._matured = True
-        self._channel.unsubscribe(self._update)
-        self._condition.notify_all()
-        done_callbacks = tuple(self._done_callbacks)
-        self._done_callbacks = None
-      else:
-        return
-
-    for done_callback in done_callbacks:
-      callable_util.call_logging_exceptions(
-          done_callback, _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE, self)
-
-  def cancel(self):
-    with self._condition:
-      if not self._matured:
-        self._cancelled = True
-        self._channel.unsubscribe(self._update)
-        self._condition.notify_all()
-        done_callbacks = tuple(self._done_callbacks)
-        self._done_callbacks = None
-      else:
-        return False
-
-    for done_callback in done_callbacks:
-      callable_util.call_logging_exceptions(
-          done_callback, _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE, self)
-
-  def cancelled(self):
-    with self._condition:
-      return self._cancelled
-
-  def running(self):
-    with self._condition:
-      return not self._cancelled and not self._matured
-
-  def done(self):
-    with self._condition:
-      return self._cancelled or self._matured
-
-  def result(self, timeout=None):
-    self._block(timeout)
-    return None
-
-  def exception(self, timeout=None):
-    self._block(timeout)
-    return None
-
-  def traceback(self, timeout=None):
-    self._block(timeout)
-    return None
-
-  def add_done_callback(self, fn):
-    with self._condition:
-      if not self._cancelled and not self._matured:
-        self._done_callbacks.append(fn)
-        return
-
-    fn(self)
-
-  def start(self):
-    with self._condition:
-      self._channel.subscribe(self._update, try_to_connect=True)
-
-  def __del__(self):
-    with self._condition:
-      if not self._cancelled and not self._matured:
-        self._channel.unsubscribe(self._update)
+                return False
+
+        for done_callback in done_callbacks:
+            callable_util.call_logging_exceptions(
+                done_callback, _DONE_CALLBACK_EXCEPTION_LOG_MESSAGE, self)
+
+    def cancelled(self):
+        with self._condition:
+            return self._cancelled
+
+    def running(self):
+        with self._condition:
+            return not self._cancelled and not self._matured
+
+    def done(self):
+        with self._condition:
+            return self._cancelled or self._matured
+
+    def result(self, timeout=None):
+        self._block(timeout)
+        return None
+
+    def exception(self, timeout=None):
+        self._block(timeout)
+        return None
+
+    def traceback(self, timeout=None):
+        self._block(timeout)
+        return None
+
+    def add_done_callback(self, fn):
+        with self._condition:
+            if not self._cancelled and not self._matured:
+                self._done_callbacks.append(fn)
+                return
+
+        fn(self)
+
+    def start(self):
+        with self._condition:
+            self._channel.subscribe(self._update, try_to_connect=True)
+
+    def __del__(self):
+        with self._condition:
+            if not self._cancelled and not self._matured:
+                self._channel.unsubscribe(self._update)
 
 
 def channel_ready_future(channel):
-  """Creates a future.Future tracking when an implementations.Channel is ready.
+    """Creates a future.Future tracking when an implementations.Channel is ready.
 
   Cancelling the returned future.Future does not tell the given
   implementations.Channel to abandon attempts it may have been making to
@@ -158,7 +157,6 @@ def channel_ready_future(channel):
     A future.Future that matures when the given Channel has connectivity
       interfaces.ChannelConnectivity.READY.
   """
-  ready_future = _ChannelReadyFuture(channel)
-  ready_future.start()
-  return ready_future
-
+    ready_future = _ChannelReadyFuture(channel)
+    ready_future.start()
+    return ready_future
diff --git a/src/python/grpcio/grpc/framework/__init__.py b/src/python/grpcio/grpc/framework/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio/grpc/framework/__init__.py
+++ b/src/python/grpcio/grpc/framework/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio/grpc/framework/common/__init__.py b/src/python/grpcio/grpc/framework/common/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio/grpc/framework/common/__init__.py
+++ b/src/python/grpcio/grpc/framework/common/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio/grpc/framework/common/cardinality.py b/src/python/grpcio/grpc/framework/common/cardinality.py
index 610425e8032e1b5eb1ed38575285e76d7a13b951..d8927cf9b065f363f5eef71cc6e4567eb357b0c0 100644
--- a/src/python/grpcio/grpc/framework/common/cardinality.py
+++ b/src/python/grpcio/grpc/framework/common/cardinality.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Defines an enum for classifying RPC methods by streaming semantics."""
 
 import enum
@@ -34,9 +33,9 @@ import enum
 
 @enum.unique
 class Cardinality(enum.Enum):
-  """Describes the streaming semantics of an RPC method."""
+    """Describes the streaming semantics of an RPC method."""
 
-  UNARY_UNARY = 'request-unary/response-unary'
-  UNARY_STREAM = 'request-unary/response-streaming'
-  STREAM_UNARY = 'request-streaming/response-unary'
-  STREAM_STREAM = 'request-streaming/response-streaming'
+    UNARY_UNARY = 'request-unary/response-unary'
+    UNARY_STREAM = 'request-unary/response-streaming'
+    STREAM_UNARY = 'request-streaming/response-unary'
+    STREAM_STREAM = 'request-streaming/response-streaming'
diff --git a/src/python/grpcio/grpc/framework/common/style.py b/src/python/grpcio/grpc/framework/common/style.py
index 6ae694bdcb40d2c178b2659a4fe76261223795d0..43f4211145d949f9b8d5865d34f534bd87ed2e85 100644
--- a/src/python/grpcio/grpc/framework/common/style.py
+++ b/src/python/grpcio/grpc/framework/common/style.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Defines an enum for classifying RPC methods by control flow semantics."""
 
 import enum
@@ -34,7 +33,7 @@ import enum
 
 @enum.unique
 class Service(enum.Enum):
-  """Describes the control flow style of RPC method implementation."""
+    """Describes the control flow style of RPC method implementation."""
 
-  INLINE = 'inline'
-  EVENT = 'event'
+    INLINE = 'inline'
+    EVENT = 'event'
diff --git a/src/python/grpcio/grpc/framework/foundation/__init__.py b/src/python/grpcio/grpc/framework/foundation/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio/grpc/framework/foundation/__init__.py
+++ b/src/python/grpcio/grpc/framework/foundation/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio/grpc/framework/foundation/abandonment.py b/src/python/grpcio/grpc/framework/foundation/abandonment.py
index 960b4d06b49c2b7b5fbda2e81a55c3ab246b9698..32385b9657436d59fea7af91561814194b3c4d1f 100644
--- a/src/python/grpcio/grpc/framework/foundation/abandonment.py
+++ b/src/python/grpcio/grpc/framework/foundation/abandonment.py
@@ -26,12 +26,11 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Utilities for indicating abandonment of computation."""
 
 
 class Abandoned(Exception):
-  """Indicates that some computation is being abandoned.
+    """Indicates that some computation is being abandoned.
 
   Abandoning a computation is different than returning a value or raising
   an exception indicating some operational or programming defect.
diff --git a/src/python/grpcio/grpc/framework/foundation/callable_util.py b/src/python/grpcio/grpc/framework/foundation/callable_util.py
index 4f029f97bb84893f05815a0b778d60d12d28cf91..3b8351c19bd1960056ac9961a7e1541b3972b3aa 100644
--- a/src/python/grpcio/grpc/framework/foundation/callable_util.py
+++ b/src/python/grpcio/grpc/framework/foundation/callable_util.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Utilities for working with callables."""
 
 import abc
@@ -39,7 +38,7 @@ import six
 
 
 class Outcome(six.with_metaclass(abc.ABCMeta)):
-  """A sum type describing the outcome of some call.
+    """A sum type describing the outcome of some call.
 
   Attributes:
     kind: One of Kind.RETURNED or Kind.RAISED respectively indicating that the
@@ -50,31 +49,31 @@ class Outcome(six.with_metaclass(abc.ABCMeta)):
       Kind.RAISED.
   """
 
-  @enum.unique
-  class Kind(enum.Enum):
-    """Identifies the general kind of the outcome of some call."""
+    @enum.unique
+    class Kind(enum.Enum):
+        """Identifies the general kind of the outcome of some call."""
 
-    RETURNED = object()
-    RAISED = object()
+        RETURNED = object()
+        RAISED = object()
 
 
 class _EasyOutcome(
-    collections.namedtuple(
-        '_EasyOutcome', ['kind', 'return_value', 'exception']),
-    Outcome):
-  """A trivial implementation of Outcome."""
+        collections.namedtuple('_EasyOutcome',
+                               ['kind', 'return_value', 'exception']), Outcome):
+    """A trivial implementation of Outcome."""
 
 
 def _call_logging_exceptions(behavior, message, *args, **kwargs):
-  try:
-    return _EasyOutcome(Outcome.Kind.RETURNED, behavior(*args, **kwargs), None)
-  except Exception as e:  # pylint: disable=broad-except
-    logging.exception(message)
-    return _EasyOutcome(Outcome.Kind.RAISED, None, e)
+    try:
+        return _EasyOutcome(Outcome.Kind.RETURNED,
+                            behavior(*args, **kwargs), None)
+    except Exception as e:  # pylint: disable=broad-except
+        logging.exception(message)
+        return _EasyOutcome(Outcome.Kind.RAISED, None, e)
 
 
 def with_exceptions_logged(behavior, message):
-  """Wraps a callable in a try-except that logs any exceptions it raises.
+    """Wraps a callable in a try-except that logs any exceptions it raises.
 
   Args:
     behavior: Any callable.
@@ -86,14 +85,16 @@ def with_exceptions_logged(behavior, message):
       future.Outcome describing whether the given behavior returned a value or
       raised an exception.
   """
-  @functools.wraps(behavior)
-  def wrapped_behavior(*args, **kwargs):
-    return _call_logging_exceptions(behavior, message, *args, **kwargs)
-  return wrapped_behavior
+
+    @functools.wraps(behavior)
+    def wrapped_behavior(*args, **kwargs):
+        return _call_logging_exceptions(behavior, message, *args, **kwargs)
+
+    return wrapped_behavior
 
 
 def call_logging_exceptions(behavior, message, *args, **kwargs):
-  """Calls a behavior in a try-except that logs any exceptions it raises.
+    """Calls a behavior in a try-except that logs any exceptions it raises.
 
   Args:
     behavior: Any callable.
@@ -105,4 +106,4 @@ def call_logging_exceptions(behavior, message, *args, **kwargs):
     An Outcome describing whether the given behavior returned a value or raised
       an exception.
   """
-  return _call_logging_exceptions(behavior, message, *args, **kwargs)
+    return _call_logging_exceptions(behavior, message, *args, **kwargs)
diff --git a/src/python/grpcio/grpc/framework/foundation/future.py b/src/python/grpcio/grpc/framework/foundation/future.py
index 6fb58eadb60922c42476de27a848ad3a28ef9531..e2ecf62921012132062e999d222aa374fc714142 100644
--- a/src/python/grpcio/grpc/framework/foundation/future.py
+++ b/src/python/grpcio/grpc/framework/foundation/future.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """A Future interface.
 
 Python doesn't have a Future interface in its standard library. In the absence
@@ -53,33 +52,33 @@ import six
 
 
 class TimeoutError(Exception):
-  """Indicates that a particular call timed out."""
+    """Indicates that a particular call timed out."""
 
 
 class CancelledError(Exception):
-  """Indicates that the computation underlying a Future was cancelled."""
+    """Indicates that the computation underlying a Future was cancelled."""
 
 
 class Future(six.with_metaclass(abc.ABCMeta)):
-  """A representation of a computation in another control flow.
+    """A representation of a computation in another control flow.
 
   Computations represented by a Future may be yet to be begun, may be ongoing,
   or may have already completed.
   """
 
-  # NOTE(nathaniel): This isn't the return type that I would want to have if it
-  # were up to me. Were this interface being written from scratch, the return
-  # type of this method would probably be a sum type like:
-  #
-  # NOT_COMMENCED
-  # COMMENCED_AND_NOT_COMPLETED
-  # PARTIAL_RESULT<Partial_Result_Type>
-  # COMPLETED<Result_Type>
-  # UNCANCELLABLE
-  # NOT_IMMEDIATELY_DETERMINABLE
-  @abc.abstractmethod
-  def cancel(self):
-    """Attempts to cancel the computation.
+    # NOTE(nathaniel): This isn't the return type that I would want to have if it
+    # were up to me. Were this interface being written from scratch, the return
+    # type of this method would probably be a sum type like:
+    #
+    # NOT_COMMENCED
+    # COMMENCED_AND_NOT_COMPLETED
+    # PARTIAL_RESULT<Partial_Result_Type>
+    # COMPLETED<Result_Type>
+    # UNCANCELLABLE
+    # NOT_IMMEDIATELY_DETERMINABLE
+    @abc.abstractmethod
+    def cancel(self):
+        """Attempts to cancel the computation.
 
     This method does not block.
 
@@ -92,25 +91,25 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         remote system for which a determination of whether or not it commenced
         before being cancelled cannot be made without blocking.
     """
-    raise NotImplementedError()
-
-  # NOTE(nathaniel): Here too this isn't the return type that I'd want this
-  # method to have if it were up to me. I think I'd go with another sum type
-  # like:
-  #
-  # NOT_CANCELLED (this object's cancel method hasn't been called)
-  # NOT_COMMENCED
-  # COMMENCED_AND_NOT_COMPLETED
-  # PARTIAL_RESULT<Partial_Result_Type>
-  # COMPLETED<Result_Type>
-  # UNCANCELLABLE
-  # NOT_IMMEDIATELY_DETERMINABLE
-  #
-  # Notice how giving the cancel method the right semantics obviates most
-  # reasons for this method to exist.
-  @abc.abstractmethod
-  def cancelled(self):
-    """Describes whether the computation was cancelled.
+        raise NotImplementedError()
+
+    # NOTE(nathaniel): Here too this isn't the return type that I'd want this
+    # method to have if it were up to me. I think I'd go with another sum type
+    # like:
+    #
+    # NOT_CANCELLED (this object's cancel method hasn't been called)
+    # NOT_COMMENCED
+    # COMMENCED_AND_NOT_COMPLETED
+    # PARTIAL_RESULT<Partial_Result_Type>
+    # COMPLETED<Result_Type>
+    # UNCANCELLABLE
+    # NOT_IMMEDIATELY_DETERMINABLE
+    #
+    # Notice how giving the cancel method the right semantics obviates most
+    # reasons for this method to exist.
+    @abc.abstractmethod
+    def cancelled(self):
+        """Describes whether the computation was cancelled.
 
     This method does not block.
 
@@ -120,11 +119,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         not limited to this object's cancel method not having been called and
         the computation's result having become immediately available.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def running(self):
-    """Describes whether the computation is taking place.
+    @abc.abstractmethod
+    def running(self):
+        """Describes whether the computation is taking place.
 
     This method does not block.
 
@@ -133,15 +132,15 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         taking place now, or False if the computation took place in the past or
         was cancelled.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  # NOTE(nathaniel): These aren't quite the semantics I'd like here either. I
-  # would rather this only returned True in cases in which the underlying
-  # computation completed successfully. A computation's having been cancelled
-  # conflicts with considering that computation "done".
-  @abc.abstractmethod
-  def done(self):
-    """Describes whether the computation has taken place.
+    # NOTE(nathaniel): These aren't quite the semantics I'd like here either. I
+    # would rather this only returned True in cases in which the underlying
+    # computation completed successfully. A computation's having been cancelled
+    # conflicts with considering that computation "done".
+    @abc.abstractmethod
+    def done(self):
+        """Describes whether the computation has taken place.
 
     This method does not block.
 
@@ -150,11 +149,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         unscheduled or interrupted. False if the computation may possibly be
         executing or scheduled to execute later.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def result(self, timeout=None):
-    """Accesses the outcome of the computation or raises its exception.
+    @abc.abstractmethod
+    def result(self, timeout=None):
+        """Accesses the outcome of the computation or raises its exception.
 
     This method may return immediately or may block.
 
@@ -173,11 +172,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
       Exception: If the computation raised an exception, this call will raise
         the same exception.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def exception(self, timeout=None):
-    """Return the exception raised by the computation.
+    @abc.abstractmethod
+    def exception(self, timeout=None):
+        """Return the exception raised by the computation.
 
     This method may return immediately or may block.
 
@@ -196,11 +195,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         terminate within the allotted time.
       CancelledError: If the computation was cancelled.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def traceback(self, timeout=None):
-    """Access the traceback of the exception raised by the computation.
+    @abc.abstractmethod
+    def traceback(self, timeout=None):
+        """Access the traceback of the exception raised by the computation.
 
     This method may return immediately or may block.
 
@@ -219,11 +218,11 @@ class Future(six.with_metaclass(abc.ABCMeta)):
         terminate within the allotted time.
       CancelledError: If the computation was cancelled.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def add_done_callback(self, fn):
-    """Adds a function to be called at completion of the computation.
+    @abc.abstractmethod
+    def add_done_callback(self, fn):
+        """Adds a function to be called at completion of the computation.
 
     The callback will be passed this Future object describing the outcome of
     the computation.
@@ -234,4 +233,4 @@ class Future(six.with_metaclass(abc.ABCMeta)):
     Args:
       fn: A callable taking this Future object as its single parameter.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
diff --git a/src/python/grpcio/grpc/framework/foundation/logging_pool.py b/src/python/grpcio/grpc/framework/foundation/logging_pool.py
index 9b469a1452e0dafd6cd72d86a556f748d4e2aa8a..9164173d348d2b78d2baf0599f3207548b0e6d88 100644
--- a/src/python/grpcio/grpc/framework/foundation/logging_pool.py
+++ b/src/python/grpcio/grpc/framework/foundation/logging_pool.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """A thread pool that logs exceptions raised by tasks executed within it."""
 
 import logging
@@ -35,42 +34,46 @@ from concurrent import futures
 
 
 def _wrap(behavior):
-  """Wraps an arbitrary callable behavior in exception-logging."""
-  def _wrapping(*args, **kwargs):
-    try:
-      return behavior(*args, **kwargs)
-    except Exception as e:
-      logging.exception(
-          'Unexpected exception from %s executed in logging pool!', behavior)
-      raise
-  return _wrapping
+    """Wraps an arbitrary callable behavior in exception-logging."""
+
+    def _wrapping(*args, **kwargs):
+        try:
+            return behavior(*args, **kwargs)
+        except Exception as e:
+            logging.exception(
+                'Unexpected exception from %s executed in logging pool!',
+                behavior)
+            raise
+
+    return _wrapping
 
 
 class _LoggingPool(object):
-  """An exception-logging futures.ThreadPoolExecutor-compatible thread pool."""
+    """An exception-logging futures.ThreadPoolExecutor-compatible thread pool."""
 
-  def __init__(self, backing_pool):
-    self._backing_pool = backing_pool
+    def __init__(self, backing_pool):
+        self._backing_pool = backing_pool
 
-  def __enter__(self):
-    return self
+    def __enter__(self):
+        return self
 
-  def __exit__(self, exc_type, exc_val, exc_tb):
-    self._backing_pool.shutdown(wait=True)
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self._backing_pool.shutdown(wait=True)
 
-  def submit(self, fn, *args, **kwargs):
-    return self._backing_pool.submit(_wrap(fn), *args, **kwargs)
+    def submit(self, fn, *args, **kwargs):
+        return self._backing_pool.submit(_wrap(fn), *args, **kwargs)
 
-  def map(self, func, *iterables, **kwargs):
-    return self._backing_pool.map(
-        _wrap(func), *iterables, timeout=kwargs.get('timeout', None))
+    def map(self, func, *iterables, **kwargs):
+        return self._backing_pool.map(_wrap(func),
+                                      *iterables,
+                                      timeout=kwargs.get('timeout', None))
 
-  def shutdown(self, wait=True):
-    self._backing_pool.shutdown(wait=wait)
+    def shutdown(self, wait=True):
+        self._backing_pool.shutdown(wait=wait)
 
 
 def pool(max_workers):
-  """Creates a thread pool that logs exceptions raised by the tasks within it.
+    """Creates a thread pool that logs exceptions raised by the tasks within it.
 
   Args:
     max_workers: The maximum number of worker threads to allow the pool.
@@ -79,4 +82,4 @@ def pool(max_workers):
     A futures.ThreadPoolExecutor-compatible thread pool that logs exceptions
       raised by the tasks executed within it.
   """
-  return _LoggingPool(futures.ThreadPoolExecutor(max_workers))
+    return _LoggingPool(futures.ThreadPoolExecutor(max_workers))
diff --git a/src/python/grpcio/grpc/framework/foundation/stream.py b/src/python/grpcio/grpc/framework/foundation/stream.py
index ddd6cc496a9dc8c196032ac23bc16e837d909fd2..2529a6944b88866a3236145a60dead43025271d1 100644
--- a/src/python/grpcio/grpc/framework/foundation/stream.py
+++ b/src/python/grpcio/grpc/framework/foundation/stream.py
@@ -26,35 +26,35 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Interfaces related to streams of values or objects."""
 
 import abc
 
 import six
 
+
 class Consumer(six.with_metaclass(abc.ABCMeta)):
-  """Interface for consumers of finite streams of values or objects."""
+    """Interface for consumers of finite streams of values or objects."""
 
-  @abc.abstractmethod
-  def consume(self, value):
-    """Accepts a value.
+    @abc.abstractmethod
+    def consume(self, value):
+        """Accepts a value.
 
     Args:
       value: Any value accepted by this Consumer.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def terminate(self):
-    """Indicates to this Consumer that no more values will be supplied."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def terminate(self):
+        """Indicates to this Consumer that no more values will be supplied."""
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def consume_and_terminate(self, value):
-    """Supplies a value and signals that no more values will be supplied.
+    @abc.abstractmethod
+    def consume_and_terminate(self, value):
+        """Supplies a value and signals that no more values will be supplied.
 
     Args:
       value: Any value accepted by this Consumer.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
diff --git a/src/python/grpcio/grpc/framework/foundation/stream_util.py b/src/python/grpcio/grpc/framework/foundation/stream_util.py
index a6f234f1feb1caf355def0e2ab3536bbfc17e2f3..6b356f176fc48d32a0f36c632948bde436bf468c 100644
--- a/src/python/grpcio/grpc/framework/foundation/stream_util.py
+++ b/src/python/grpcio/grpc/framework/foundation/stream_util.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Helpful utilities related to the stream module."""
 
 import logging
@@ -38,126 +37,126 @@ _NO_VALUE = object()
 
 
 class TransformingConsumer(stream.Consumer):
-  """A stream.Consumer that passes a transformation of its input to another."""
+    """A stream.Consumer that passes a transformation of its input to another."""
 
-  def __init__(self, transformation, downstream):
-    self._transformation = transformation
-    self._downstream = downstream
+    def __init__(self, transformation, downstream):
+        self._transformation = transformation
+        self._downstream = downstream
 
-  def consume(self, value):
-    self._downstream.consume(self._transformation(value))
+    def consume(self, value):
+        self._downstream.consume(self._transformation(value))
 
-  def terminate(self):
-    self._downstream.terminate()
+    def terminate(self):
+        self._downstream.terminate()
 
-  def consume_and_terminate(self, value):
-    self._downstream.consume_and_terminate(self._transformation(value))
+    def consume_and_terminate(self, value):
+        self._downstream.consume_and_terminate(self._transformation(value))
 
 
 class IterableConsumer(stream.Consumer):
-  """A Consumer that when iterated over emits the values it has consumed."""
-
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._values = []
-    self._active = True
-
-  def consume(self, stock_reply):
-    with self._condition:
-      if self._active:
-        self._values.append(stock_reply)
-        self._condition.notify()
-
-  def terminate(self):
-    with self._condition:
-      self._active = False
-      self._condition.notify()
-
-  def consume_and_terminate(self, stock_reply):
-    with self._condition:
-      if self._active:
-        self._values.append(stock_reply)
-        self._active = False
-        self._condition.notify()
-
-  def __iter__(self):
-    return self
-
-  def __next__(self):
-    return self.next()
-
-  def next(self):
-    with self._condition:
-      while self._active and not self._values:
-        self._condition.wait()
-      if self._values:
-        return self._values.pop(0)
-      else:
-        raise StopIteration()
+    """A Consumer that when iterated over emits the values it has consumed."""
+
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._values = []
+        self._active = True
+
+    def consume(self, stock_reply):
+        with self._condition:
+            if self._active:
+                self._values.append(stock_reply)
+                self._condition.notify()
+
+    def terminate(self):
+        with self._condition:
+            self._active = False
+            self._condition.notify()
+
+    def consume_and_terminate(self, stock_reply):
+        with self._condition:
+            if self._active:
+                self._values.append(stock_reply)
+                self._active = False
+                self._condition.notify()
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        return self.next()
+
+    def next(self):
+        with self._condition:
+            while self._active and not self._values:
+                self._condition.wait()
+            if self._values:
+                return self._values.pop(0)
+            else:
+                raise StopIteration()
 
 
 class ThreadSwitchingConsumer(stream.Consumer):
-  """A Consumer decorator that affords serialization and asynchrony."""
-
-  def __init__(self, sink, pool):
-    self._lock = threading.Lock()
-    self._sink = sink
-    self._pool = pool
-    # True if self._spin has been submitted to the pool to be called once and
-    # that call has not yet returned, False otherwise.
-    self._spinning = False
-    self._values = []
-    self._active = True
-
-  def _spin(self, sink, value, terminate):
-    while True:
-      try:
-        if value is _NO_VALUE:
-          sink.terminate()
-        elif terminate:
-          sink.consume_and_terminate(value)
-        else:
-          sink.consume(value)
-      except Exception as e:  # pylint:disable=broad-except
-        logging.exception(e)
-
-      with self._lock:
-        if terminate:
-          self._spinning = False
-          return
-        elif self._values:
-          value = self._values.pop(0)
-          terminate = not self._values and not self._active
-        elif not self._active:
-          value = _NO_VALUE
-          terminate = True
-        else:
-          self._spinning = False
-          return
-
-  def consume(self, value):
-    with self._lock:
-      if self._active:
-        if self._spinning:
-          self._values.append(value)
-        else:
-          self._pool.submit(self._spin, self._sink, value, False)
-          self._spinning = True
-
-  def terminate(self):
-    with self._lock:
-      if self._active:
-        self._active = False
-        if not self._spinning:
-          self._pool.submit(self._spin, self._sink, _NO_VALUE, True)
-          self._spinning = True
-
-  def consume_and_terminate(self, value):
-    with self._lock:
-      if self._active:
-        self._active = False
-        if self._spinning:
-          self._values.append(value)
-        else:
-          self._pool.submit(self._spin, self._sink, value, True)
-          self._spinning = True
+    """A Consumer decorator that affords serialization and asynchrony."""
+
+    def __init__(self, sink, pool):
+        self._lock = threading.Lock()
+        self._sink = sink
+        self._pool = pool
+        # True if self._spin has been submitted to the pool to be called once and
+        # that call has not yet returned, False otherwise.
+        self._spinning = False
+        self._values = []
+        self._active = True
+
+    def _spin(self, sink, value, terminate):
+        while True:
+            try:
+                if value is _NO_VALUE:
+                    sink.terminate()
+                elif terminate:
+                    sink.consume_and_terminate(value)
+                else:
+                    sink.consume(value)
+            except Exception as e:  # pylint:disable=broad-except
+                logging.exception(e)
+
+            with self._lock:
+                if terminate:
+                    self._spinning = False
+                    return
+                elif self._values:
+                    value = self._values.pop(0)
+                    terminate = not self._values and not self._active
+                elif not self._active:
+                    value = _NO_VALUE
+                    terminate = True
+                else:
+                    self._spinning = False
+                    return
+
+    def consume(self, value):
+        with self._lock:
+            if self._active:
+                if self._spinning:
+                    self._values.append(value)
+                else:
+                    self._pool.submit(self._spin, self._sink, value, False)
+                    self._spinning = True
+
+    def terminate(self):
+        with self._lock:
+            if self._active:
+                self._active = False
+                if not self._spinning:
+                    self._pool.submit(self._spin, self._sink, _NO_VALUE, True)
+                    self._spinning = True
+
+    def consume_and_terminate(self, value):
+        with self._lock:
+            if self._active:
+                self._active = False
+                if self._spinning:
+                    self._values.append(value)
+                else:
+                    self._pool.submit(self._spin, self._sink, value, True)
+                    self._spinning = True
diff --git a/src/python/grpcio/grpc/framework/interfaces/__init__.py b/src/python/grpcio/grpc/framework/interfaces/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio/grpc/framework/interfaces/__init__.py
+++ b/src/python/grpcio/grpc/framework/interfaces/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio/grpc/framework/interfaces/base/__init__.py b/src/python/grpcio/grpc/framework/interfaces/base/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio/grpc/framework/interfaces/base/__init__.py
+++ b/src/python/grpcio/grpc/framework/interfaces/base/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio/grpc/framework/interfaces/base/base.py b/src/python/grpcio/grpc/framework/interfaces/base/base.py
index a2ddd9c474730383461186685627afb3f5138cf4..cb3328296c5b57ce002b2d347e0d39b20de358af 100644
--- a/src/python/grpcio/grpc/framework/interfaces/base/base.py
+++ b/src/python/grpcio/grpc/framework/interfaces/base/base.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """The base interface of RPC Framework.
 
 Implementations of this interface support the conduct of "operations":
@@ -49,7 +48,7 @@ from grpc.framework.foundation import abandonment  # pylint: disable=unused-impo
 
 
 class NoSuchMethodError(Exception):
-  """Indicates that an unrecognized operation has been called.
+    """Indicates that an unrecognized operation has been called.
 
   Attributes:
     code: A code value to communicate to the other side of the operation along
@@ -58,8 +57,8 @@ class NoSuchMethodError(Exception):
       along with indication of operation termination. May be None.
   """
 
-  def __init__(self, code, details):
-    """Constructor.
+    def __init__(self, code, details):
+        """Constructor.
 
     Args:
       code: A code value to communicate to the other side of the operation
@@ -67,12 +66,12 @@ class NoSuchMethodError(Exception):
       details: A details value to communicate to the other side of the
         operation along with indication of operation termination. May be None.
     """
-    self.code = code
-    self.details = details
+        self.code = code
+        self.details = details
 
 
 class Outcome(object):
-  """The outcome of an operation.
+    """The outcome of an operation.
 
   Attributes:
     kind: A Kind value coarsely identifying how the operation terminated.
@@ -82,23 +81,23 @@ class Outcome(object):
       provided.
   """
 
-  @enum.unique
-  class Kind(enum.Enum):
-    """Ways in which an operation can terminate."""
+    @enum.unique
+    class Kind(enum.Enum):
+        """Ways in which an operation can terminate."""
 
-    COMPLETED = 'completed'
-    CANCELLED = 'cancelled'
-    EXPIRED = 'expired'
-    LOCAL_SHUTDOWN = 'local shutdown'
-    REMOTE_SHUTDOWN = 'remote shutdown'
-    RECEPTION_FAILURE = 'reception failure'
-    TRANSMISSION_FAILURE = 'transmission failure'
-    LOCAL_FAILURE = 'local failure'
-    REMOTE_FAILURE = 'remote failure'
+        COMPLETED = 'completed'
+        CANCELLED = 'cancelled'
+        EXPIRED = 'expired'
+        LOCAL_SHUTDOWN = 'local shutdown'
+        REMOTE_SHUTDOWN = 'remote shutdown'
+        RECEPTION_FAILURE = 'reception failure'
+        TRANSMISSION_FAILURE = 'transmission failure'
+        LOCAL_FAILURE = 'local failure'
+        REMOTE_FAILURE = 'remote failure'
 
 
 class Completion(six.with_metaclass(abc.ABCMeta)):
-  """An aggregate of the values exchanged upon operation completion.
+    """An aggregate of the values exchanged upon operation completion.
 
   Attributes:
     terminal_metadata: A terminal metadata value for the operaton.
@@ -108,21 +107,21 @@ class Completion(six.with_metaclass(abc.ABCMeta)):
 
 
 class OperationContext(six.with_metaclass(abc.ABCMeta)):
-  """Provides operation-related information and action."""
+    """Provides operation-related information and action."""
 
-  @abc.abstractmethod
-  def outcome(self):
-    """Indicates the operation's outcome (or that the operation is ongoing).
+    @abc.abstractmethod
+    def outcome(self):
+        """Indicates the operation's outcome (or that the operation is ongoing).
 
     Returns:
       None if the operation is still active or the Outcome value for the
         operation if it has terminated.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def add_termination_callback(self, callback):
-    """Adds a function to be called upon operation termination.
+    @abc.abstractmethod
+    def add_termination_callback(self, callback):
+        """Adds a function to be called upon operation termination.
 
     Args:
       callback: A callable to be passed an Outcome value on operation
@@ -134,42 +133,44 @@ class OperationContext(six.with_metaclass(abc.ABCMeta)):
         terminated an Outcome value describing the operation termination and the
         passed callback will not be called as a result of this method call.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def time_remaining(self):
-    """Describes the length of allowed time remaining for the operation.
+    @abc.abstractmethod
+    def time_remaining(self):
+        """Describes the length of allowed time remaining for the operation.
 
     Returns:
       A nonnegative float indicating the length of allowed time in seconds
       remaining for the operation to complete before it is considered to have
       timed out. Zero is returned if the operation has terminated.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def cancel(self):
-    """Cancels the operation if the operation has not yet terminated."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def cancel(self):
+        """Cancels the operation if the operation has not yet terminated."""
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def fail(self, exception):
-    """Indicates that the operation has failed.
+    @abc.abstractmethod
+    def fail(self, exception):
+        """Indicates that the operation has failed.
 
     Args:
       exception: An exception germane to the operation failure. May be None.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class Operator(six.with_metaclass(abc.ABCMeta)):
-  """An interface through which to participate in an operation."""
+    """An interface through which to participate in an operation."""
 
-  @abc.abstractmethod
-  def advance(
-      self, initial_metadata=None, payload=None, completion=None,
-      allowance=None):
-    """Progresses the operation.
+    @abc.abstractmethod
+    def advance(self,
+                initial_metadata=None,
+                payload=None,
+                completion=None,
+                allowance=None):
+        """Progresses the operation.
 
     Args:
       initial_metadata: An initial metadata value. Only one may ever be
@@ -181,23 +182,24 @@ class Operator(six.with_metaclass(abc.ABCMeta)):
       allowance: A positive integer communicating the number of additional
         payloads allowed to be passed by the remote side of the operation.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
+
 
 class ProtocolReceiver(six.with_metaclass(abc.ABCMeta)):
-  """A means of receiving protocol values during an operation."""
+    """A means of receiving protocol values during an operation."""
 
-  @abc.abstractmethod
-  def context(self, protocol_context):
-    """Accepts the protocol context object for the operation.
+    @abc.abstractmethod
+    def context(self, protocol_context):
+        """Accepts the protocol context object for the operation.
 
     Args:
       protocol_context: The protocol context object for the operation.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class Subscription(six.with_metaclass(abc.ABCMeta)):
-  """Describes customer code's interest in values from the other side.
+    """Describes customer code's interest in values from the other side.
 
   Attributes:
     kind: A Kind value describing the overall kind of this value.
@@ -215,20 +217,20 @@ class Subscription(six.with_metaclass(abc.ABCMeta)):
       Kind.FULL.
   """
 
-  @enum.unique
-  class Kind(enum.Enum):
+    @enum.unique
+    class Kind(enum.Enum):
 
-    NONE = 'none'
-    TERMINATION_ONLY = 'termination only'
-    FULL = 'full'
+        NONE = 'none'
+        TERMINATION_ONLY = 'termination only'
+        FULL = 'full'
 
 
 class Servicer(six.with_metaclass(abc.ABCMeta)):
-  """Interface for service implementations."""
+    """Interface for service implementations."""
 
-  @abc.abstractmethod
-  def service(self, group, method, context, output_operator):
-    """Services an operation.
+    @abc.abstractmethod
+    def service(self, group, method, context, output_operator):
+        """Services an operation.
 
     Args:
       group: The group identifier of the operation to be serviced.
@@ -248,20 +250,20 @@ class Servicer(six.with_metaclass(abc.ABCMeta)):
       abandonment.Abandoned: If the operation has been aborted and there no
         longer is any reason to service the operation.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class End(six.with_metaclass(abc.ABCMeta)):
-  """Common type for entry-point objects on both sides of an operation."""
+    """Common type for entry-point objects on both sides of an operation."""
 
-  @abc.abstractmethod
-  def start(self):
-    """Starts this object's service of operations."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def start(self):
+        """Starts this object's service of operations."""
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stop(self, grace):
-    """Stops this object's service of operations.
+    @abc.abstractmethod
+    def stop(self, grace):
+        """Stops this object's service of operations.
 
     This object will refuse service of new operations as soon as this method is
     called but operations under way at the time of the call may be given a
@@ -281,13 +283,19 @@ class End(six.with_metaclass(abc.ABCMeta)):
         much sooner (if for example this End had no operations in progress at
         the time its stop method was called).
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def operate(
-      self, group, method, subscription, timeout, initial_metadata=None,
-      payload=None, completion=None, protocol_options=None):
-    """Commences an operation.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def operate(self,
+                group,
+                method,
+                subscription,
+                timeout,
+                initial_metadata=None,
+                payload=None,
+                completion=None,
+                protocol_options=None):
+        """Commences an operation.
 
     Args:
       group: The group identifier of the invoked operation.
@@ -312,23 +320,23 @@ class End(six.with_metaclass(abc.ABCMeta)):
         returned pair is an Operator to which operation values not passed in
         this call should later be passed.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def operation_stats(self):
-    """Reports the number of terminated operations broken down by outcome.
+    @abc.abstractmethod
+    def operation_stats(self):
+        """Reports the number of terminated operations broken down by outcome.
 
     Returns:
       A dictionary from Outcome.Kind value to an integer identifying the number
         of operations that terminated with that outcome kind.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def add_idle_action(self, action):
-    """Adds an action to be called when this End has no ongoing operations.
+    @abc.abstractmethod
+    def add_idle_action(self, action):
+        """Adds an action to be called when this End has no ongoing operations.
 
     Args:
       action: A callable that accepts no arguments.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
diff --git a/src/python/grpcio/grpc/framework/interfaces/base/utilities.py b/src/python/grpcio/grpc/framework/interfaces/base/utilities.py
index 87a85018f52a4fb46acc38651e9d468b37d75a17..461706ff9f2ad2f90546c377a76bcff43f8938d6 100644
--- a/src/python/grpcio/grpc/framework/interfaces/base/utilities.py
+++ b/src/python/grpcio/grpc/framework/interfaces/base/utilities.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Utilities for use with the base interface of RPC Framework."""
 
 import collections
@@ -34,27 +33,30 @@ import collections
 from grpc.framework.interfaces.base import base
 
 
-class _Completion(
-    base.Completion,
-    collections.namedtuple(
-        '_Completion', ('terminal_metadata', 'code', 'message',))):
-  """A trivial implementation of base.Completion."""
+class _Completion(base.Completion,
+                  collections.namedtuple('_Completion', (
+                      'terminal_metadata',
+                      'code',
+                      'message',))):
+    """A trivial implementation of base.Completion."""
+
 
+class _Subscription(base.Subscription,
+                    collections.namedtuple('_Subscription', (
+                        'kind',
+                        'termination_callback',
+                        'allowance',
+                        'operator',
+                        'protocol_receiver',))):
+    """A trivial implementation of base.Subscription."""
 
-class _Subscription(
-    base.Subscription,
-    collections.namedtuple(
-        '_Subscription',
-        ('kind', 'termination_callback', 'allowance', 'operator',
-         'protocol_receiver',))):
-  """A trivial implementation of base.Subscription."""
 
-_NONE_SUBSCRIPTION = _Subscription(
-    base.Subscription.Kind.NONE, None, None, None, None)
+_NONE_SUBSCRIPTION = _Subscription(base.Subscription.Kind.NONE, None, None,
+                                   None, None)
 
 
 def completion(terminal_metadata, code, message):
-  """Creates a base.Completion aggregating the given operation values.
+    """Creates a base.Completion aggregating the given operation values.
 
   Args:
     terminal_metadata: A terminal metadata value for an operaton.
@@ -64,11 +66,11 @@ def completion(terminal_metadata, code, message):
   Returns:
     A base.Completion aggregating the given operation values.
   """
-  return _Completion(terminal_metadata, code, message)
+    return _Completion(terminal_metadata, code, message)
 
 
 def full_subscription(operator, protocol_receiver):
-  """Creates a "full" base.Subscription for the given base.Operator.
+    """Creates a "full" base.Subscription for the given base.Operator.
 
   Args:
     operator: A base.Operator to be used in an operation.
@@ -78,5 +80,5 @@ def full_subscription(operator, protocol_receiver):
     A base.Subscription of kind base.Subscription.Kind.FULL wrapping the given
       base.Operator and base.ProtocolReceiver.
   """
-  return _Subscription(
-      base.Subscription.Kind.FULL, None, None, operator, protocol_receiver)
+    return _Subscription(base.Subscription.Kind.FULL, None, None, operator,
+                         protocol_receiver)
diff --git a/src/python/grpcio/grpc/framework/interfaces/face/__init__.py b/src/python/grpcio/grpc/framework/interfaces/face/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio/grpc/framework/interfaces/face/__init__.py
+++ b/src/python/grpcio/grpc/framework/interfaces/face/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio/grpc/framework/interfaces/face/face.py b/src/python/grpcio/grpc/framework/interfaces/face/face.py
index 4826e7fff647db8ce32cf2263a8ee6b342886293..36ddca18c1427d90ed758ce5d45db461a3dc0af5 100644
--- a/src/python/grpcio/grpc/framework/interfaces/face/face.py
+++ b/src/python/grpcio/grpc/framework/interfaces/face/face.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Interfaces defining the Face layer of RPC Framework."""
 
 import abc
@@ -45,33 +44,38 @@ from grpc.framework.foundation import stream  # pylint: disable=unused-import
 
 
 class NoSuchMethodError(Exception):
-  """Raised by customer code to indicate an unrecognized method.
+    """Raised by customer code to indicate an unrecognized method.
 
   Attributes:
     group: The group of the unrecognized method.
     name: The name of the unrecognized method.
   """
 
-  def __init__(self, group, method):
-    """Constructor.
+    def __init__(self, group, method):
+        """Constructor.
 
     Args:
       group: The group identifier of the unrecognized RPC name.
       method: The method identifier of the unrecognized RPC name.
     """
-    super(NoSuchMethodError, self).__init__()
-    self.group = group
-    self.method = method
+        super(NoSuchMethodError, self).__init__()
+        self.group = group
+        self.method = method
 
-  def __repr__(self):
-    return 'face.NoSuchMethodError(%s, %s)' % (self.group, self.method,)
+    def __repr__(self):
+        return 'face.NoSuchMethodError(%s, %s)' % (
+            self.group,
+            self.method,)
 
 
 class Abortion(
-    collections.namedtuple(
-        'Abortion',
-        ('kind', 'initial_metadata', 'terminal_metadata', 'code', 'details',))):
-  """A value describing RPC abortion.
+        collections.namedtuple('Abortion', (
+            'kind',
+            'initial_metadata',
+            'terminal_metadata',
+            'code',
+            'details',))):
+    """A value describing RPC abortion.
 
   Attributes:
     kind: A Kind value identifying how the RPC failed.
@@ -85,21 +89,21 @@ class Abortion(
       details value was received.
   """
 
-  @enum.unique
-  class Kind(enum.Enum):
-    """Types of RPC abortion."""
+    @enum.unique
+    class Kind(enum.Enum):
+        """Types of RPC abortion."""
 
-    CANCELLED = 'cancelled'
-    EXPIRED = 'expired'
-    LOCAL_SHUTDOWN = 'local shutdown'
-    REMOTE_SHUTDOWN = 'remote shutdown'
-    NETWORK_FAILURE = 'network failure'
-    LOCAL_FAILURE = 'local failure'
-    REMOTE_FAILURE = 'remote failure'
+        CANCELLED = 'cancelled'
+        EXPIRED = 'expired'
+        LOCAL_SHUTDOWN = 'local shutdown'
+        REMOTE_SHUTDOWN = 'remote shutdown'
+        NETWORK_FAILURE = 'network failure'
+        LOCAL_FAILURE = 'local failure'
+        REMOTE_FAILURE = 'remote failure'
 
 
 class AbortionError(six.with_metaclass(abc.ABCMeta, Exception)):
-  """Common super type for exceptions indicating RPC abortion.
+    """Common super type for exceptions indicating RPC abortion.
 
     initial_metadata: The initial metadata from the other side of the RPC or
       None if no initial metadata value was received.
@@ -111,100 +115,100 @@ class AbortionError(six.with_metaclass(abc.ABCMeta, Exception)):
       details value was received.
   """
 
-  def __init__(self, initial_metadata, terminal_metadata, code, details):
-    super(AbortionError, self).__init__()
-    self.initial_metadata = initial_metadata
-    self.terminal_metadata = terminal_metadata
-    self.code = code
-    self.details = details
+    def __init__(self, initial_metadata, terminal_metadata, code, details):
+        super(AbortionError, self).__init__()
+        self.initial_metadata = initial_metadata
+        self.terminal_metadata = terminal_metadata
+        self.code = code
+        self.details = details
 
-  def __str__(self):
-    return '%s(code=%s, details="%s")' % (
-        self.__class__.__name__, self.code, self.details)
+    def __str__(self):
+        return '%s(code=%s, details="%s")' % (self.__class__.__name__,
+                                              self.code, self.details)
 
 
 class CancellationError(AbortionError):
-  """Indicates that an RPC has been cancelled."""
+    """Indicates that an RPC has been cancelled."""
 
 
 class ExpirationError(AbortionError):
-  """Indicates that an RPC has expired ("timed out")."""
+    """Indicates that an RPC has expired ("timed out")."""
 
 
 class LocalShutdownError(AbortionError):
-  """Indicates that an RPC has terminated due to local shutdown of RPCs."""
+    """Indicates that an RPC has terminated due to local shutdown of RPCs."""
 
 
 class RemoteShutdownError(AbortionError):
-  """Indicates that an RPC has terminated due to remote shutdown of RPCs."""
+    """Indicates that an RPC has terminated due to remote shutdown of RPCs."""
 
 
 class NetworkError(AbortionError):
-  """Indicates that some error occurred on the network."""
+    """Indicates that some error occurred on the network."""
 
 
 class LocalError(AbortionError):
-  """Indicates that an RPC has terminated due to a local defect."""
+    """Indicates that an RPC has terminated due to a local defect."""
 
 
 class RemoteError(AbortionError):
-  """Indicates that an RPC has terminated due to a remote defect."""
+    """Indicates that an RPC has terminated due to a remote defect."""
 
 
 class RpcContext(six.with_metaclass(abc.ABCMeta)):
-  """Provides RPC-related information and action."""
+    """Provides RPC-related information and action."""
 
-  @abc.abstractmethod
-  def is_active(self):
-    """Describes whether the RPC is active or has terminated."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def is_active(self):
+        """Describes whether the RPC is active or has terminated."""
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def time_remaining(self):
-    """Describes the length of allowed time remaining for the RPC.
+    @abc.abstractmethod
+    def time_remaining(self):
+        """Describes the length of allowed time remaining for the RPC.
 
     Returns:
       A nonnegative float indicating the length of allowed time in seconds
       remaining for the RPC to complete before it is considered to have timed
       out.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def add_abortion_callback(self, abortion_callback):
-    """Registers a callback to be called if the RPC is aborted.
+    @abc.abstractmethod
+    def add_abortion_callback(self, abortion_callback):
+        """Registers a callback to be called if the RPC is aborted.
 
     Args:
       abortion_callback: A callable to be called and passed an Abortion value
         in the event of RPC abortion.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def cancel(self):
-    """Cancels the RPC.
+    @abc.abstractmethod
+    def cancel(self):
+        """Cancels the RPC.
 
     Idempotent and has no effect if the RPC has already terminated.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def protocol_context(self):
-    """Accesses a custom object specified by an implementation provider.
+    @abc.abstractmethod
+    def protocol_context(self):
+        """Accesses a custom object specified by an implementation provider.
 
     Returns:
       A value specified by the provider of a Face interface implementation
         affording custom state and behavior.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class Call(six.with_metaclass(abc.ABCMeta, RpcContext)):
-  """Invocation-side utility object for an RPC."""
+    """Invocation-side utility object for an RPC."""
 
-  @abc.abstractmethod
-  def initial_metadata(self):
-    """Accesses the initial metadata from the service-side of the RPC.
+    @abc.abstractmethod
+    def initial_metadata(self):
+        """Accesses the initial metadata from the service-side of the RPC.
 
     This method blocks until the value is available or is known not to have been
     emitted from the service-side of the RPC.
@@ -213,11 +217,11 @@ class Call(six.with_metaclass(abc.ABCMeta, RpcContext)):
       The initial metadata object emitted by the service-side of the RPC, or
         None if there was no such value.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def terminal_metadata(self):
-    """Accesses the terminal metadata from the service-side of the RPC.
+    @abc.abstractmethod
+    def terminal_metadata(self):
+        """Accesses the terminal metadata from the service-side of the RPC.
 
     This method blocks until the value is available or is known not to have been
     emitted from the service-side of the RPC.
@@ -226,11 +230,11 @@ class Call(six.with_metaclass(abc.ABCMeta, RpcContext)):
       The terminal metadata object emitted by the service-side of the RPC, or
         None if there was no such value.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def code(self):
-    """Accesses the code emitted by the service-side of the RPC.
+    @abc.abstractmethod
+    def code(self):
+        """Accesses the code emitted by the service-side of the RPC.
 
     This method blocks until the value is available or is known not to have been
     emitted from the service-side of the RPC.
@@ -239,11 +243,11 @@ class Call(six.with_metaclass(abc.ABCMeta, RpcContext)):
       The code object emitted by the service-side of the RPC, or None if there
         was no such value.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def details(self):
-    """Accesses the details value emitted by the service-side of the RPC.
+    @abc.abstractmethod
+    def details(self):
+        """Accesses the details value emitted by the service-side of the RPC.
 
     This method blocks until the value is available or is known not to have been
     emitted from the service-side of the RPC.
@@ -252,15 +256,15 @@ class Call(six.with_metaclass(abc.ABCMeta, RpcContext)):
       The details value emitted by the service-side of the RPC, or None if there
         was no such value.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class ServicerContext(six.with_metaclass(abc.ABCMeta, RpcContext)):
-  """A context object passed to method implementations."""
+    """A context object passed to method implementations."""
 
-  @abc.abstractmethod
-  def invocation_metadata(self):
-    """Accesses the metadata from the invocation-side of the RPC.
+    @abc.abstractmethod
+    def invocation_metadata(self):
+        """Accesses the metadata from the invocation-side of the RPC.
 
     This method blocks until the value is available or is known not to have been
     emitted from the invocation-side of the RPC.
@@ -269,11 +273,11 @@ class ServicerContext(six.with_metaclass(abc.ABCMeta, RpcContext)):
       The metadata object emitted by the invocation-side of the RPC, or None if
         there was no such value.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def initial_metadata(self, initial_metadata):
-    """Accepts the service-side initial metadata value of the RPC.
+    @abc.abstractmethod
+    def initial_metadata(self, initial_metadata):
+        """Accepts the service-side initial metadata value of the RPC.
 
     This method need not be called by method implementations if they have no
     service-side initial metadata to transmit.
@@ -282,11 +286,11 @@ class ServicerContext(six.with_metaclass(abc.ABCMeta, RpcContext)):
       initial_metadata: The service-side initial metadata value of the RPC to
         be transmitted to the invocation side of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def terminal_metadata(self, terminal_metadata):
-    """Accepts the service-side terminal metadata value of the RPC.
+    @abc.abstractmethod
+    def terminal_metadata(self, terminal_metadata):
+        """Accepts the service-side terminal metadata value of the RPC.
 
     This method need not be called by method implementations if they have no
     service-side terminal metadata to transmit.
@@ -295,11 +299,11 @@ class ServicerContext(six.with_metaclass(abc.ABCMeta, RpcContext)):
       terminal_metadata: The service-side terminal metadata value of the RPC to
         be transmitted to the invocation side of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def code(self, code):
-    """Accepts the service-side code of the RPC.
+    @abc.abstractmethod
+    def code(self, code):
+        """Accepts the service-side code of the RPC.
 
     This method need not be called by method implementations if they have no
     code to transmit.
@@ -308,11 +312,11 @@ class ServicerContext(six.with_metaclass(abc.ABCMeta, RpcContext)):
       code: The code of the RPC to be transmitted to the invocation side of the
         RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def details(self, details):
-    """Accepts the service-side details of the RPC.
+    @abc.abstractmethod
+    def details(self, details):
+        """Accepts the service-side details of the RPC.
 
     This method need not be called by method implementations if they have no
     service-side details to transmit.
@@ -321,34 +325,34 @@ class ServicerContext(six.with_metaclass(abc.ABCMeta, RpcContext)):
       details: The service-side details value of the RPC to be transmitted to
         the invocation side of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class ResponseReceiver(six.with_metaclass(abc.ABCMeta)):
-  """Invocation-side object used to accept the output of an RPC."""
+    """Invocation-side object used to accept the output of an RPC."""
 
-  @abc.abstractmethod
-  def initial_metadata(self, initial_metadata):
-    """Receives the initial metadata from the service-side of the RPC.
+    @abc.abstractmethod
+    def initial_metadata(self, initial_metadata):
+        """Receives the initial metadata from the service-side of the RPC.
 
     Args:
       initial_metadata: The initial metadata object emitted from the
         service-side of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def response(self, response):
-    """Receives a response from the service-side of the RPC.
+    @abc.abstractmethod
+    def response(self, response):
+        """Receives a response from the service-side of the RPC.
 
     Args:
       response: A response object emitted from the service-side of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def complete(self, terminal_metadata, code, details):
-    """Receives the completion values emitted from the service-side of the RPC.
+    @abc.abstractmethod
+    def complete(self, terminal_metadata, code, details):
+        """Receives the completion values emitted from the service-side of the RPC.
 
     Args:
       terminal_metadata: The terminal metadata object emitted from the
@@ -356,17 +360,20 @@ class ResponseReceiver(six.with_metaclass(abc.ABCMeta)):
       code: The code object emitted from the service-side of the RPC.
       details: The details object emitted from the service-side of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class UnaryUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
-  """Affords invoking a unary-unary RPC in any call style."""
+    """Affords invoking a unary-unary RPC in any call style."""
 
-  @abc.abstractmethod
-  def __call__(
-      self, request, timeout, metadata=None, with_call=False,
-      protocol_options=None):
-    """Synchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def __call__(self,
+                 request,
+                 timeout,
+                 metadata=None,
+                 with_call=False,
+                 protocol_options=None):
+        """Synchronously invokes the underlying RPC.
 
     Args:
       request: The request value for the RPC.
@@ -385,11 +392,11 @@ class UnaryUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
     Raises:
       AbortionError: Indicating that the RPC was aborted.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def future(self, request, timeout, metadata=None, protocol_options=None):
-    """Asynchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def future(self, request, timeout, metadata=None, protocol_options=None):
+        """Asynchronously invokes the underlying RPC.
 
     Args:
       request: The request value for the RPC.
@@ -405,13 +412,17 @@ class UnaryUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
         response value of the RPC. In the event of RPC abortion, the returned
         Future's exception value will be an AbortionError.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def event(
-      self, request, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    """Asynchronously invokes the underlying RPC.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def event(self,
+              request,
+              receiver,
+              abortion_callback,
+              timeout,
+              metadata=None,
+              protocol_options=None):
+        """Asynchronously invokes the underlying RPC.
 
     Args:
       request: The request value for the RPC.
@@ -427,15 +438,15 @@ class UnaryUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A Call for the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class UnaryStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
-  """Affords invoking a unary-stream RPC in any call style."""
+    """Affords invoking a unary-stream RPC in any call style."""
 
-  @abc.abstractmethod
-  def __call__(self, request, timeout, metadata=None, protocol_options=None):
-    """Invokes the underlying RPC.
+    @abc.abstractmethod
+    def __call__(self, request, timeout, metadata=None, protocol_options=None):
+        """Invokes the underlying RPC.
 
     Args:
       request: The request value for the RPC.
@@ -450,13 +461,17 @@ class UnaryStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
         values. Drawing response values from the returned iterator may raise
         AbortionError indicating abortion of the RPC.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def event(
-      self, request, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    """Asynchronously invokes the underlying RPC.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def event(self,
+              request,
+              receiver,
+              abortion_callback,
+              timeout,
+              metadata=None,
+              protocol_options=None):
+        """Asynchronously invokes the underlying RPC.
 
     Args:
       request: The request value for the RPC.
@@ -472,17 +487,20 @@ class UnaryStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A Call object for the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class StreamUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
-  """Affords invoking a stream-unary RPC in any call style."""
+    """Affords invoking a stream-unary RPC in any call style."""
 
-  @abc.abstractmethod
-  def __call__(
-      self, request_iterator, timeout, metadata=None,
-      with_call=False, protocol_options=None):
-    """Synchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def __call__(self,
+                 request_iterator,
+                 timeout,
+                 metadata=None,
+                 with_call=False,
+                 protocol_options=None):
+        """Synchronously invokes the underlying RPC.
 
     Args:
       request_iterator: An iterator that yields request values for the RPC.
@@ -501,12 +519,15 @@ class StreamUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
     Raises:
       AbortionError: Indicating that the RPC was aborted.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def future(
-      self, request_iterator, timeout, metadata=None, protocol_options=None):
-    """Asynchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def future(self,
+               request_iterator,
+               timeout,
+               metadata=None,
+               protocol_options=None):
+        """Asynchronously invokes the underlying RPC.
 
     Args:
       request_iterator: An iterator that yields request values for the RPC.
@@ -522,13 +543,16 @@ class StreamUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
         response value of the RPC. In the event of RPC abortion, the returned
         Future's exception value will be an AbortionError.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def event(
-      self, receiver, abortion_callback, timeout, metadata=None,
-      protocol_options=None):
-    """Asynchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def event(self,
+              receiver,
+              abortion_callback,
+              timeout,
+              metadata=None,
+              protocol_options=None):
+        """Asynchronously invokes the underlying RPC.
 
     Args:
       receiver: A ResponseReceiver to be passed the response data of the RPC.
@@ -544,16 +568,19 @@ class StreamUnaryMultiCallable(six.with_metaclass(abc.ABCMeta)):
       A single object that is both a Call object for the RPC and a
         stream.Consumer to which the request values of the RPC should be passed.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class StreamStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
-  """Affords invoking a stream-stream RPC in any call style."""
+    """Affords invoking a stream-stream RPC in any call style."""
 
-  @abc.abstractmethod
-  def __call__(
-      self, request_iterator, timeout, metadata=None, protocol_options=None):
-    """Invokes the underlying RPC.
+    @abc.abstractmethod
+    def __call__(self,
+                 request_iterator,
+                 timeout,
+                 metadata=None,
+                 protocol_options=None):
+        """Invokes the underlying RPC.
 
     Args:
       request_iterator: An iterator that yields request values for the RPC.
@@ -568,13 +595,16 @@ class StreamStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
         values. Drawing response values from the returned iterator may raise
         AbortionError indicating abortion of the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def event(
-      self, receiver, abortion_callback, timeout, metadata=None,
-      protocol_options=None):
-    """Asynchronously invokes the underlying RPC.
+    @abc.abstractmethod
+    def event(self,
+              receiver,
+              abortion_callback,
+              timeout,
+              metadata=None,
+              protocol_options=None):
+        """Asynchronously invokes the underlying RPC.
 
     Args:
       receiver: A ResponseReceiver to be passed the response data of the RPC.
@@ -590,11 +620,11 @@ class StreamStreamMultiCallable(six.with_metaclass(abc.ABCMeta)):
       A single object that is both a Call object for the RPC and a
         stream.Consumer to which the request values of the RPC should be passed.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class MethodImplementation(six.with_metaclass(abc.ABCMeta)):
-  """A sum type that describes a method implementation.
+    """A sum type that describes a method implementation.
 
   Attributes:
     cardinality: A cardinality.Cardinality value.
@@ -639,11 +669,11 @@ class MethodImplementation(six.with_metaclass(abc.ABCMeta)):
 
 
 class MultiMethodImplementation(six.with_metaclass(abc.ABCMeta)):
-  """A general type able to service many methods."""
+    """A general type able to service many methods."""
 
-  @abc.abstractmethod
-  def service(self, group, method, response_consumer, context):
-    """Services an RPC.
+    @abc.abstractmethod
+    def service(self, group, method, response_consumer, context):
+        """Services an RPC.
 
     Args:
       group: The group identifier of the RPC.
@@ -666,17 +696,22 @@ class MultiMethodImplementation(six.with_metaclass(abc.ABCMeta)):
       NoSuchMethodError: If this MultiMethod does not recognize the given group
         and name for the RPC and is not able to service the RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class GenericStub(six.with_metaclass(abc.ABCMeta)):
-  """Affords RPC invocation via generic methods."""
-
-  @abc.abstractmethod
-  def blocking_unary_unary(
-      self, group, method, request, timeout, metadata=None,
-      with_call=False, protocol_options=None):
-    """Invokes a unary-request-unary-response method.
+    """Affords RPC invocation via generic methods."""
+
+    @abc.abstractmethod
+    def blocking_unary_unary(self,
+                             group,
+                             method,
+                             request,
+                             timeout,
+                             metadata=None,
+                             with_call=False,
+                             protocol_options=None):
+        """Invokes a unary-request-unary-response method.
 
     This method blocks until either returning the response value of the RPC
     (in the event of RPC completion) or raising an exception (in the event of
@@ -700,13 +735,17 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
     Raises:
       AbortionError: Indicating that the RPC was aborted.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def future_unary_unary(
-      self, group, method, request, timeout, metadata=None,
-      protocol_options=None):
-    """Invokes a unary-request-unary-response method.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def future_unary_unary(self,
+                           group,
+                           method,
+                           request,
+                           timeout,
+                           metadata=None,
+                           protocol_options=None):
+        """Invokes a unary-request-unary-response method.
 
     Args:
       group: The group identifier of the RPC.
@@ -723,13 +762,17 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
         response value of the RPC. In the event of RPC abortion, the returned
         Future's exception value will be an AbortionError.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def inline_unary_stream(
-      self, group, method, request, timeout, metadata=None,
-      protocol_options=None):
-    """Invokes a unary-request-stream-response method.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def inline_unary_stream(self,
+                            group,
+                            method,
+                            request,
+                            timeout,
+                            metadata=None,
+                            protocol_options=None):
+        """Invokes a unary-request-stream-response method.
 
     Args:
       group: The group identifier of the RPC.
@@ -745,13 +788,18 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
         values. Drawing response values from the returned iterator may raise
         AbortionError indicating abortion of the RPC.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def blocking_stream_unary(
-      self, group, method, request_iterator, timeout, metadata=None,
-      with_call=False, protocol_options=None):
-    """Invokes a stream-request-unary-response method.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def blocking_stream_unary(self,
+                              group,
+                              method,
+                              request_iterator,
+                              timeout,
+                              metadata=None,
+                              with_call=False,
+                              protocol_options=None):
+        """Invokes a stream-request-unary-response method.
 
     This method blocks until either returning the response value of the RPC
     (in the event of RPC completion) or raising an exception (in the event of
@@ -775,13 +823,17 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
     Raises:
       AbortionError: Indicating that the RPC was aborted.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def future_stream_unary(
-      self, group, method, request_iterator, timeout, metadata=None,
-      protocol_options=None):
-    """Invokes a stream-request-unary-response method.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def future_stream_unary(self,
+                            group,
+                            method,
+                            request_iterator,
+                            timeout,
+                            metadata=None,
+                            protocol_options=None):
+        """Invokes a stream-request-unary-response method.
 
     Args:
       group: The group identifier of the RPC.
@@ -798,13 +850,17 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
         response value of the RPC. In the event of RPC abortion, the returned
         Future's exception value will be an AbortionError.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def inline_stream_stream(
-      self, group, method, request_iterator, timeout, metadata=None,
-      protocol_options=None):
-    """Invokes a stream-request-stream-response method.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def inline_stream_stream(self,
+                             group,
+                             method,
+                             request_iterator,
+                             timeout,
+                             metadata=None,
+                             protocol_options=None):
+        """Invokes a stream-request-stream-response method.
 
     Args:
       group: The group identifier of the RPC.
@@ -820,13 +876,19 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
         values. Drawing response values from the returned iterator may raise
         AbortionError indicating abortion of the RPC.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def event_unary_unary(
-      self, group, method, request, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    """Event-driven invocation of a unary-request-unary-response method.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def event_unary_unary(self,
+                          group,
+                          method,
+                          request,
+                          receiver,
+                          abortion_callback,
+                          timeout,
+                          metadata=None,
+                          protocol_options=None):
+        """Event-driven invocation of a unary-request-unary-response method.
 
     Args:
       group: The group identifier of the RPC.
@@ -843,13 +905,19 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A Call for the RPC.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def event_unary_stream(
-      self, group, method, request, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    """Event-driven invocation of a unary-request-stream-response method.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def event_unary_stream(self,
+                           group,
+                           method,
+                           request,
+                           receiver,
+                           abortion_callback,
+                           timeout,
+                           metadata=None,
+                           protocol_options=None):
+        """Event-driven invocation of a unary-request-stream-response method.
 
     Args:
       group: The group identifier of the RPC.
@@ -866,13 +934,18 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A Call for the RPC.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def event_stream_unary(
-      self, group, method, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    """Event-driven invocation of a unary-request-unary-response method.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def event_stream_unary(self,
+                           group,
+                           method,
+                           receiver,
+                           abortion_callback,
+                           timeout,
+                           metadata=None,
+                           protocol_options=None):
+        """Event-driven invocation of a unary-request-unary-response method.
 
     Args:
       group: The group identifier of the RPC.
@@ -889,13 +962,18 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
       A pair of a Call object for the RPC and a stream.Consumer to which the
         request values of the RPC should be passed.
     """
-    raise NotImplementedError()
-
-  @abc.abstractmethod
-  def event_stream_stream(
-      self, group, method, receiver, abortion_callback, timeout,
-      metadata=None, protocol_options=None):
-    """Event-driven invocation of a unary-request-stream-response method.
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def event_stream_stream(self,
+                            group,
+                            method,
+                            receiver,
+                            abortion_callback,
+                            timeout,
+                            metadata=None,
+                            protocol_options=None):
+        """Event-driven invocation of a unary-request-stream-response method.
 
     Args:
       group: The group identifier of the RPC.
@@ -912,11 +990,11 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
       A pair of a Call object for the RPC and a stream.Consumer to which the
         request values of the RPC should be passed.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def unary_unary(self, group, method):
-    """Creates a UnaryUnaryMultiCallable for a unary-unary method.
+    @abc.abstractmethod
+    def unary_unary(self, group, method):
+        """Creates a UnaryUnaryMultiCallable for a unary-unary method.
 
     Args:
       group: The group identifier of the RPC.
@@ -925,11 +1003,11 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A UnaryUnaryMultiCallable value for the named unary-unary method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def unary_stream(self, group, method):
-    """Creates a UnaryStreamMultiCallable for a unary-stream method.
+    @abc.abstractmethod
+    def unary_stream(self, group, method):
+        """Creates a UnaryStreamMultiCallable for a unary-stream method.
 
     Args:
       group: The group identifier of the RPC.
@@ -938,11 +1016,11 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A UnaryStreamMultiCallable value for the name unary-stream method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stream_unary(self, group, method):
-    """Creates a StreamUnaryMultiCallable for a stream-unary method.
+    @abc.abstractmethod
+    def stream_unary(self, group, method):
+        """Creates a StreamUnaryMultiCallable for a stream-unary method.
 
     Args:
       group: The group identifier of the RPC.
@@ -951,11 +1029,11 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A StreamUnaryMultiCallable value for the named stream-unary method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stream_stream(self, group, method):
-    """Creates a StreamStreamMultiCallable for a stream-stream method.
+    @abc.abstractmethod
+    def stream_stream(self, group, method):
+        """Creates a StreamStreamMultiCallable for a stream-stream method.
 
     Args:
       group: The group identifier of the RPC.
@@ -964,11 +1042,11 @@ class GenericStub(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A StreamStreamMultiCallable value for the named stream-stream method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class DynamicStub(six.with_metaclass(abc.ABCMeta)):
-  """Affords RPC invocation via attributes corresponding to afforded methods.
+    """Affords RPC invocation via attributes corresponding to afforded methods.
 
   Instances of this type may be scoped to a single group so that attribute
   access is unambiguous.
diff --git a/src/python/grpcio/grpc/framework/interfaces/face/utilities.py b/src/python/grpcio/grpc/framework/interfaces/face/utilities.py
index db2ec6ed87fb3e05a20653424f2fe36355bb7bbe..39a642f0ae29e513440496b61059a4f8f5910855 100644
--- a/src/python/grpcio/grpc/framework/interfaces/face/utilities.py
+++ b/src/python/grpcio/grpc/framework/interfaces/face/utilities.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Utilities for RPC Framework's Face interface."""
 
 import collections
@@ -38,18 +37,24 @@ from grpc.framework.foundation import stream  # pylint: disable=unused-import
 from grpc.framework.interfaces.face import face
 
 
-class _MethodImplementation(
-    face.MethodImplementation,
-    collections.namedtuple(
-        '_MethodImplementation',
-        ['cardinality', 'style', 'unary_unary_inline', 'unary_stream_inline',
-         'stream_unary_inline', 'stream_stream_inline', 'unary_unary_event',
-         'unary_stream_event', 'stream_unary_event', 'stream_stream_event',])):
-  pass
+class _MethodImplementation(face.MethodImplementation,
+                            collections.namedtuple('_MethodImplementation', [
+                                'cardinality',
+                                'style',
+                                'unary_unary_inline',
+                                'unary_stream_inline',
+                                'stream_unary_inline',
+                                'stream_stream_inline',
+                                'unary_unary_event',
+                                'unary_stream_event',
+                                'stream_unary_event',
+                                'stream_stream_event',
+                            ])):
+    pass
 
 
 def unary_unary_inline(behavior):
-  """Creates an face.MethodImplementation for the given behavior.
+    """Creates an face.MethodImplementation for the given behavior.
 
   Args:
     behavior: The implementation of a unary-unary RPC method as a callable value
@@ -59,13 +64,13 @@ def unary_unary_inline(behavior):
   Returns:
     An face.MethodImplementation derived from the given behavior.
   """
-  return _MethodImplementation(
-      cardinality.Cardinality.UNARY_UNARY, style.Service.INLINE, behavior,
-      None, None, None, None, None, None, None)
+    return _MethodImplementation(cardinality.Cardinality.UNARY_UNARY,
+                                 style.Service.INLINE, behavior, None, None,
+                                 None, None, None, None, None)
 
 
 def unary_stream_inline(behavior):
-  """Creates an face.MethodImplementation for the given behavior.
+    """Creates an face.MethodImplementation for the given behavior.
 
   Args:
     behavior: The implementation of a unary-stream RPC method as a callable
@@ -75,13 +80,13 @@ def unary_stream_inline(behavior):
   Returns:
     An face.MethodImplementation derived from the given behavior.
   """
-  return _MethodImplementation(
-      cardinality.Cardinality.UNARY_STREAM, style.Service.INLINE, None,
-      behavior, None, None, None, None, None, None)
+    return _MethodImplementation(cardinality.Cardinality.UNARY_STREAM,
+                                 style.Service.INLINE, None, behavior, None,
+                                 None, None, None, None, None)
 
 
 def stream_unary_inline(behavior):
-  """Creates an face.MethodImplementation for the given behavior.
+    """Creates an face.MethodImplementation for the given behavior.
 
   Args:
     behavior: The implementation of a stream-unary RPC method as a callable
@@ -91,13 +96,13 @@ def stream_unary_inline(behavior):
   Returns:
     An face.MethodImplementation derived from the given behavior.
   """
-  return _MethodImplementation(
-      cardinality.Cardinality.STREAM_UNARY, style.Service.INLINE, None, None,
-      behavior, None, None, None, None, None)
+    return _MethodImplementation(cardinality.Cardinality.STREAM_UNARY,
+                                 style.Service.INLINE, None, None, behavior,
+                                 None, None, None, None, None)
 
 
 def stream_stream_inline(behavior):
-  """Creates an face.MethodImplementation for the given behavior.
+    """Creates an face.MethodImplementation for the given behavior.
 
   Args:
     behavior: The implementation of a stream-stream RPC method as a callable
@@ -107,13 +112,13 @@ def stream_stream_inline(behavior):
   Returns:
     An face.MethodImplementation derived from the given behavior.
   """
-  return _MethodImplementation(
-      cardinality.Cardinality.STREAM_STREAM, style.Service.INLINE, None, None,
-      None, behavior, None, None, None, None)
+    return _MethodImplementation(cardinality.Cardinality.STREAM_STREAM,
+                                 style.Service.INLINE, None, None, None,
+                                 behavior, None, None, None, None)
 
 
 def unary_unary_event(behavior):
-  """Creates an face.MethodImplementation for the given behavior.
+    """Creates an face.MethodImplementation for the given behavior.
 
   Args:
     behavior: The implementation of a unary-unary RPC method as a callable
@@ -123,13 +128,13 @@ def unary_unary_event(behavior):
   Returns:
     An face.MethodImplementation derived from the given behavior.
   """
-  return _MethodImplementation(
-      cardinality.Cardinality.UNARY_UNARY, style.Service.EVENT, None, None,
-      None, None, behavior, None, None, None)
+    return _MethodImplementation(cardinality.Cardinality.UNARY_UNARY,
+                                 style.Service.EVENT, None, None, None, None,
+                                 behavior, None, None, None)
 
 
 def unary_stream_event(behavior):
-  """Creates an face.MethodImplementation for the given behavior.
+    """Creates an face.MethodImplementation for the given behavior.
 
   Args:
     behavior: The implementation of a unary-stream RPC method as a callable
@@ -139,13 +144,13 @@ def unary_stream_event(behavior):
   Returns:
     An face.MethodImplementation derived from the given behavior.
   """
-  return _MethodImplementation(
-      cardinality.Cardinality.UNARY_STREAM, style.Service.EVENT, None, None,
-      None, None, None, behavior, None, None)
+    return _MethodImplementation(cardinality.Cardinality.UNARY_STREAM,
+                                 style.Service.EVENT, None, None, None, None,
+                                 None, behavior, None, None)
 
 
 def stream_unary_event(behavior):
-  """Creates an face.MethodImplementation for the given behavior.
+    """Creates an face.MethodImplementation for the given behavior.
 
   Args:
     behavior: The implementation of a stream-unary RPC method as a callable
@@ -156,13 +161,13 @@ def stream_unary_event(behavior):
   Returns:
     An face.MethodImplementation derived from the given behavior.
   """
-  return _MethodImplementation(
-      cardinality.Cardinality.STREAM_UNARY, style.Service.EVENT, None, None,
-      None, None, None, None, behavior, None)
+    return _MethodImplementation(cardinality.Cardinality.STREAM_UNARY,
+                                 style.Service.EVENT, None, None, None, None,
+                                 None, None, behavior, None)
 
 
 def stream_stream_event(behavior):
-  """Creates an face.MethodImplementation for the given behavior.
+    """Creates an face.MethodImplementation for the given behavior.
 
   Args:
     behavior: The implementation of a stream-stream RPC method as a callable
@@ -173,6 +178,6 @@ def stream_stream_event(behavior):
   Returns:
     An face.MethodImplementation derived from the given behavior.
   """
-  return _MethodImplementation(
-      cardinality.Cardinality.STREAM_STREAM, style.Service.EVENT, None, None,
-      None, None, None, None, None, behavior)
+    return _MethodImplementation(cardinality.Cardinality.STREAM_STREAM,
+                                 style.Service.EVENT, None, None, None, None,
+                                 None, None, None, behavior)
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index d43f93b94fe1d9db7758a80e758c26bced727de9..e27e9e181d5158722efda4e616c77d9d92011fad 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -82,6 +82,8 @@ CORE_SOURCE_FILES = [
   'src/core/lib/channel/connected_channel.c',
   'src/core/lib/channel/deadline_filter.c',
   'src/core/lib/channel/handshaker.c',
+  'src/core/lib/channel/handshaker_factory.c',
+  'src/core/lib/channel/handshaker_registry.c',
   'src/core/lib/channel/http_client_filter.c',
   'src/core/lib/channel/http_server_filter.c',
   'src/core/lib/channel/message_size_filter.c',
diff --git a/src/python/grpcio/support.py b/src/python/grpcio/support.py
index f363f5fdc5033400d213afc01c90f1f17f8d9586..a228ba4a482eacd7d2969010ccc5f6768688a2ba 100644
--- a/src/python/grpcio/support.py
+++ b/src/python/grpcio/support.py
@@ -27,7 +27,6 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-
 import os
 import os.path
 import shutil
@@ -38,7 +37,6 @@ from distutils import errors
 
 import commands
 
-
 C_PYTHON_DEV = """
 #include <Python.h>
 int main(int argc, char **argv) { return 0; }
@@ -55,63 +53,70 @@ Could not find <Python.h>. This could mean the following:
     (check your environment variables or try re-installing?)
 """
 
-C_CHECKS = {
-  C_PYTHON_DEV: C_PYTHON_DEV_ERROR_MESSAGE,
-}
+C_CHECKS = {C_PYTHON_DEV: C_PYTHON_DEV_ERROR_MESSAGE,}
+
 
 def _compile(compiler, source_string):
-  tempdir = tempfile.mkdtemp()
-  cpath = os.path.join(tempdir, 'a.c')
-  with open(cpath, 'w') as cfile:
-    cfile.write(source_string)
-  try:
-    compiler.compile([cpath])
-  except errors.CompileError as error:
-    return error
-  finally:
-    shutil.rmtree(tempdir)
+    tempdir = tempfile.mkdtemp()
+    cpath = os.path.join(tempdir, 'a.c')
+    with open(cpath, 'w') as cfile:
+        cfile.write(source_string)
+    try:
+        compiler.compile([cpath])
+    except errors.CompileError as error:
+        return error
+    finally:
+        shutil.rmtree(tempdir)
+
 
 def _expect_compile(compiler, source_string, error_message):
-  if _compile(compiler, source_string) is not None:
-    sys.stderr.write(error_message)
-    raise commands.CommandError(
-        "Diagnostics found a compilation environment issue:\n{}"
+    if _compile(compiler, source_string) is not None:
+        sys.stderr.write(error_message)
+        raise commands.CommandError(
+            "Diagnostics found a compilation environment issue:\n{}"
             .format(error_message))
 
+
 def diagnose_compile_error(build_ext, error):
-  """Attempt to diagnose an error during compilation."""
-  for c_check, message in C_CHECKS.items():
-    _expect_compile(build_ext.compiler, c_check, message)
-  python_sources = [
-      source for source in build_ext.get_source_files()
-      if source.startswith('./src/python') and source.endswith('c')
-  ]
-  for source in python_sources:
-    if not os.path.isfile(source):
-      raise commands.CommandError(
-          ("Diagnostics found a missing Python extension source file:\n{}\n\n"
-           "This is usually because the Cython sources haven't been transpiled "
-           "into C yet and you're building from source.\n"
-           "Try setting the environment variable "
-           "`GRPC_PYTHON_BUILD_WITH_CYTHON=1` when invoking `setup.py` or "
-           "when using `pip`, e.g.:\n\n"
-           "pip install -rrequirements.txt\n"
-           "GRPC_PYTHON_BUILD_WITH_CYTHON=1 pip install .")
-            .format(source)
-          )
+    """Attempt to diagnose an error during compilation."""
+    for c_check, message in C_CHECKS.items():
+        _expect_compile(build_ext.compiler, c_check, message)
+    python_sources = [
+        source for source in build_ext.get_source_files()
+        if source.startswith('./src/python') and source.endswith('c')
+    ]
+    for source in python_sources:
+        if not os.path.isfile(source):
+            raise commands.CommandError((
+                "Diagnostics found a missing Python extension source file:\n{}\n\n"
+                "This is usually because the Cython sources haven't been transpiled "
+                "into C yet and you're building from source.\n"
+                "Try setting the environment variable "
+                "`GRPC_PYTHON_BUILD_WITH_CYTHON=1` when invoking `setup.py` or "
+                "when using `pip`, e.g.:\n\n"
+                "pip install -rrequirements.txt\n"
+                "GRPC_PYTHON_BUILD_WITH_CYTHON=1 pip install .").format(source))
+
+
+def diagnose_attribute_error(build_ext, error):
+    if any('_needs_stub' in arg for arg in error.args):
+        raise commands.CommandError(
+            "We expect a missing `_needs_stub` attribute from older versions of "
+            "setuptools. Consider upgrading setuptools.")
 
 
 _ERROR_DIAGNOSES = {
-    errors.CompileError: diagnose_compile_error
+    errors.CompileError: diagnose_compile_error,
+    AttributeError: diagnose_attribute_error
 }
 
-def diagnose_build_ext_error(build_ext, error, formatted):
-  diagnostic = _ERROR_DIAGNOSES.get(type(error))
-  if diagnostic is None:
-    raise commands.CommandError(
-        "\n\nWe could not diagnose your build failure. Please file an issue at "
-        "http://www.github.com/grpc/grpc with `[Python install]` in the title."
-        "\n\n{}".format(formatted))
-  else:
-    diagnostic(build_ext, error)
 
+def diagnose_build_ext_error(build_ext, error, formatted):
+    diagnostic = _ERROR_DIAGNOSES.get(type(error))
+    if diagnostic is None:
+        raise commands.CommandError(
+            "\n\nWe could not diagnose your build failure. Please file an issue at "
+            "http://www.github.com/grpc/grpc with `[Python install]` in the title."
+            "\n\n{}".format(formatted))
+    else:
+        diagnostic(build_ext, error)
diff --git a/src/python/grpcio_health_checking/MANIFEST.in b/src/python/grpcio_health_checking/MANIFEST.in
index 7407f646d161896255816060f1cd047228041ebe..5255e4c4036c9e3999d844238f7067d786940cbf 100644
--- a/src/python/grpcio_health_checking/MANIFEST.in
+++ b/src/python/grpcio_health_checking/MANIFEST.in
@@ -1,4 +1,4 @@
 include grpc_version.py
 include health_commands.py
-graft grpc
+graft grpc_health
 global-exclude *.pyc
diff --git a/src/python/grpcio_health_checking/grpc_health/__init__.py b/src/python/grpcio_health_checking/grpc_health/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_health_checking/grpc_health/__init__.py
+++ b/src/python/grpcio_health_checking/grpc_health/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_health_checking/grpc_health/v1/__init__.py b/src/python/grpcio_health_checking/grpc_health/v1/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_health_checking/grpc_health/v1/__init__.py
+++ b/src/python/grpcio_health_checking/grpc_health/v1/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_health_checking/grpc_health/v1/health.py b/src/python/grpcio_health_checking/grpc_health/v1/health.py
index 0df679b0e22c3de249f2c6959a84a6c94ccd8209..f0f11cf84b01194afad61d8b88b036d4d90ba878 100644
--- a/src/python/grpcio_health_checking/grpc_health/v1/health.py
+++ b/src/python/grpcio_health_checking/grpc_health/v1/health.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Reference implementation for health checking in gRPC Python."""
 
 import threading
@@ -37,23 +36,23 @@ from grpc_health.v1 import health_pb2
 
 
 class HealthServicer(health_pb2.HealthServicer):
-  """Servicer handling RPCs for service statuses."""
+    """Servicer handling RPCs for service statuses."""
 
-  def __init__(self):
-    self._server_status_lock = threading.Lock()
-    self._server_status = {}
+    def __init__(self):
+        self._server_status_lock = threading.Lock()
+        self._server_status = {}
 
-  def Check(self, request, context):
-    with self._server_status_lock:
-      status = self._server_status.get(request.service)
-      if status is None:
-        context.set_code(grpc.StatusCode.NOT_FOUND)
-        return health_pb2.HealthCheckResponse()
-      else:
-        return health_pb2.HealthCheckResponse(status=status)
+    def Check(self, request, context):
+        with self._server_status_lock:
+            status = self._server_status.get(request.service)
+            if status is None:
+                context.set_code(grpc.StatusCode.NOT_FOUND)
+                return health_pb2.HealthCheckResponse()
+            else:
+                return health_pb2.HealthCheckResponse(status=status)
 
-  def set(self, service, status):
-    """Sets the status of a service.
+    def set(self, service, status):
+        """Sets the status of a service.
 
     Args:
         service: string, the name of the service.
@@ -61,5 +60,5 @@ class HealthServicer(health_pb2.HealthServicer):
         status: HealthCheckResponse.status enum value indicating
             the status of the service
     """
-    with self._server_status_lock:
-      self._server_status[service] = status
+        with self._server_status_lock:
+            self._server_status[service] = status
diff --git a/src/python/grpcio_health_checking/health_commands.py b/src/python/grpcio_health_checking/health_commands.py
index 0c420a655f58ecf16c41e03037acd18a3a415db7..14375a74c0e8da64a66b31d07da33cdafe88fd67 100644
--- a/src/python/grpcio_health_checking/health_commands.py
+++ b/src/python/grpcio_health_checking/health_commands.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Provides distutils command classes for the GRPC Python setup process."""
 
 import os
@@ -39,40 +38,40 @@ HEALTH_PROTO = os.path.join(ROOT_DIR, '../../proto/grpc/health/v1/health.proto')
 
 
 class CopyProtoModules(setuptools.Command):
-  """Command to copy proto modules from grpc/src/proto."""
+    """Command to copy proto modules from grpc/src/proto."""
 
-  description = ''
-  user_options = []
+    description = ''
+    user_options = []
 
-  def initialize_options(self):
-    pass
+    def initialize_options(self):
+        pass
 
-  def finalize_options(self):
-    pass
+    def finalize_options(self):
+        pass
 
-  def run(self):
-    if os.path.isfile(HEALTH_PROTO):
-      shutil.copyfile(
-          HEALTH_PROTO,
-          os.path.join(ROOT_DIR, 'grpc_health/v1/health.proto'))
+    def run(self):
+        if os.path.isfile(HEALTH_PROTO):
+            shutil.copyfile(
+                HEALTH_PROTO,
+                os.path.join(ROOT_DIR, 'grpc_health/v1/health.proto'))
 
 
 class BuildPackageProtos(setuptools.Command):
-  """Command to generate project *_pb2.py modules from proto files."""
+    """Command to generate project *_pb2.py modules from proto files."""
 
-  description = 'build grpc protobuf modules'
-  user_options = []
+    description = 'build grpc protobuf modules'
+    user_options = []
 
-  def initialize_options(self):
-    pass
+    def initialize_options(self):
+        pass
 
-  def finalize_options(self):
-    pass
+    def finalize_options(self):
+        pass
 
-  def run(self):
-    # due to limitations of the proto generator, we require that only *one*
-    # directory is provided as an 'include' directory. We assume it's the '' key
-    # to `self.distribution.package_dir` (and get a key error if it's not
-    # there).
-    from grpc_tools import command
-    command.build_package_protos(self.distribution.package_dir[''])
+    def run(self):
+        # due to limitations of the proto generator, we require that only *one*
+        # directory is provided as an 'include' directory. We assume it's the '' key
+        # to `self.distribution.package_dir` (and get a key error if it's not
+        # there).
+        from grpc_tools import command
+        command.build_package_protos(self.distribution.package_dir[''])
diff --git a/src/python/grpcio_health_checking/setup.py b/src/python/grpcio_health_checking/setup.py
index e88f389ba8a5fce962fdfa192d7046897ba9b786..4c3991dcc4ae08301935107644023d3d0456f146 100644
--- a/src/python/grpcio_health_checking/setup.py
+++ b/src/python/grpcio_health_checking/setup.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Setup module for the GRPC Python package's optional health checking."""
 
 import os
@@ -41,18 +40,14 @@ os.chdir(os.path.dirname(os.path.abspath(__file__)))
 import health_commands
 import grpc_version
 
-PACKAGE_DIRECTORIES = {
-    '': '.',
-}
+PACKAGE_DIRECTORIES = {'': '.',}
 
 SETUP_REQUIRES = (
-    'grpcio-tools>={version}'.format(version=grpc_version.VERSION),
-)
+    'grpcio-tools>={version}'.format(version=grpc_version.VERSION),)
 
 INSTALL_REQUIRES = (
     'protobuf>=3.0.0',
-    'grpcio>={version}'.format(version=grpc_version.VERSION),
-)
+    'grpcio>={version}'.format(version=grpc_version.VERSION),)
 
 COMMAND_CLASS = {
     # Run preprocess from the repository *before* doing any packaging!
@@ -68,5 +63,4 @@ setuptools.setup(
     packages=setuptools.find_packages('.'),
     install_requires=INSTALL_REQUIRES,
     setup_requires=SETUP_REQUIRES,
-    cmdclass=COMMAND_CLASS
-)
+    cmdclass=COMMAND_CLASS)
diff --git a/src/python/grpcio_reflection/grpc_reflection/__init__.py b/src/python/grpcio_reflection/grpc_reflection/__init__.py
index d5ad73a74ab7203f989e1faa00976683e1d3e281..100a624dc9c1bbd89708c58e18cf2666a73f4cc7 100644
--- a/src/python/grpcio_reflection/grpc_reflection/__init__.py
+++ b/src/python/grpcio_reflection/grpc_reflection/__init__.py
@@ -26,4 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
diff --git a/src/python/grpcio_reflection/grpc_reflection/v1alpha/__init__.py b/src/python/grpcio_reflection/grpc_reflection/v1alpha/__init__.py
index d5ad73a74ab7203f989e1faa00976683e1d3e281..100a624dc9c1bbd89708c58e18cf2666a73f4cc7 100644
--- a/src/python/grpcio_reflection/grpc_reflection/v1alpha/__init__.py
+++ b/src/python/grpcio_reflection/grpc_reflection/v1alpha/__init__.py
@@ -26,4 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
diff --git a/src/python/grpcio_reflection/grpc_reflection/v1alpha/reflection.py b/src/python/grpcio_reflection/grpc_reflection/v1alpha/reflection.py
index bfcbce8e04123f343a44fe63fa5ca95b6c2c362d..87f28396ce222e680ae110de59c4b2e4d9ff7fb0 100644
--- a/src/python/grpcio_reflection/grpc_reflection/v1alpha/reflection.py
+++ b/src/python/grpcio_reflection/grpc_reflection/v1alpha/reflection.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Reference implementation for reflection in gRPC Python."""
 
 import threading
@@ -39,105 +38,96 @@ from grpc_reflection.v1alpha import reflection_pb2
 
 _POOL = descriptor_pool.Default()
 
+
 def _not_found_error():
-  return reflection_pb2.ServerReflectionResponse(
-      error_response=reflection_pb2.ErrorResponse(
-          error_code=grpc.StatusCode.NOT_FOUND.value[0],
-          error_message=grpc.StatusCode.NOT_FOUND.value[1].encode(),
-      )
-  )
+    return reflection_pb2.ServerReflectionResponse(
+        error_response=reflection_pb2.ErrorResponse(
+            error_code=grpc.StatusCode.NOT_FOUND.value[0],
+            error_message=grpc.StatusCode.NOT_FOUND.value[1].encode(),))
+
 
 def _file_descriptor_response(descriptor):
-  proto = descriptor_pb2.FileDescriptorProto()
-  descriptor.CopyToProto(proto)
-  serialized_proto = proto.SerializeToString()
-  return reflection_pb2.ServerReflectionResponse(
-      file_descriptor_response=reflection_pb2.FileDescriptorResponse(
-        file_descriptor_proto=(serialized_proto,)
-      ),
-  )
+    proto = descriptor_pb2.FileDescriptorProto()
+    descriptor.CopyToProto(proto)
+    serialized_proto = proto.SerializeToString()
+    return reflection_pb2.ServerReflectionResponse(
+        file_descriptor_response=reflection_pb2.FileDescriptorResponse(
+            file_descriptor_proto=(serialized_proto,)),)
 
 
 class ReflectionServicer(reflection_pb2.ServerReflectionServicer):
-  """Servicer handling RPCs for service statuses."""
+    """Servicer handling RPCs for service statuses."""
 
-  def __init__(self, service_names, pool=None):
-    """Constructor.
+    def __init__(self, service_names, pool=None):
+        """Constructor.
 
     Args:
       service_names: Iterable of fully-qualified service names available.
     """
-    self._service_names = list(service_names)
-    self._pool = _POOL if pool is None else pool
-
-  def _file_by_filename(self, filename):
-    try:
-      descriptor = self._pool.FindFileByName(filename)
-    except KeyError:
-      return _not_found_error()
-    else:
-      return _file_descriptor_response(descriptor)
-
-  def _file_containing_symbol(self, fully_qualified_name):
-    try:
-      descriptor = self._pool.FindFileContainingSymbol(fully_qualified_name)
-    except KeyError:
-      return _not_found_error()
-    else:
-      return _file_descriptor_response(descriptor)
-
-  def _file_containing_extension(containing_type, extension_number):
-    # TODO(atash) Python protobuf currently doesn't support querying extensions.
-    # https://github.com/google/protobuf/issues/2248
-    return reflection_pb2.ServerReflectionResponse(
-        error_response=reflection_pb2.ErrorResponse(
-            error_code=grpc.StatusCode.UNIMPLEMENTED.value[0],
-            error_message=grpc.StatusCode.UNIMPLMENTED.value[1].encode(),
-        )
-    )
-
-  def _extension_numbers_of_type(fully_qualified_name):
-    # TODO(atash) We're allowed to leave this unsupported according to the
-    # protocol, but we should still eventually implement it. Hits the same issue
-    # as `_file_containing_extension`, however.
-    # https://github.com/google/protobuf/issues/2248
-    return reflection_pb2.ServerReflectionResponse(
-        error_response=reflection_pb2.ErrorResponse(
-            error_code=grpc.StatusCode.UNIMPLEMENTED.value[0],
-            error_message=grpc.StatusCode.UNIMPLMENTED.value[1].encode(),
-        )
-    )
+        self._service_names = list(service_names)
+        self._pool = _POOL if pool is None else pool
+
+    def _file_by_filename(self, filename):
+        try:
+            descriptor = self._pool.FindFileByName(filename)
+        except KeyError:
+            return _not_found_error()
+        else:
+            return _file_descriptor_response(descriptor)
+
+    def _file_containing_symbol(self, fully_qualified_name):
+        try:
+            descriptor = self._pool.FindFileContainingSymbol(
+                fully_qualified_name)
+        except KeyError:
+            return _not_found_error()
+        else:
+            return _file_descriptor_response(descriptor)
+
+    def _file_containing_extension(containing_type, extension_number):
+        # TODO(atash) Python protobuf currently doesn't support querying extensions.
+        # https://github.com/google/protobuf/issues/2248
+        return reflection_pb2.ServerReflectionResponse(
+            error_response=reflection_pb2.ErrorResponse(
+                error_code=grpc.StatusCode.UNIMPLEMENTED.value[0],
+                error_message=grpc.StatusCode.UNIMPLMENTED.value[1].encode(),))
+
+    def _extension_numbers_of_type(fully_qualified_name):
+        # TODO(atash) We're allowed to leave this unsupported according to the
+        # protocol, but we should still eventually implement it. Hits the same issue
+        # as `_file_containing_extension`, however.
+        # https://github.com/google/protobuf/issues/2248
+        return reflection_pb2.ServerReflectionResponse(
+            error_response=reflection_pb2.ErrorResponse(
+                error_code=grpc.StatusCode.UNIMPLEMENTED.value[0],
+                error_message=grpc.StatusCode.UNIMPLMENTED.value[1].encode(),))
 
-  def _list_services(self):
-    return reflection_pb2.ServerReflectionResponse(
-        list_services_response=reflection_pb2.ListServiceResponse(
-            service=[
+    def _list_services(self):
+        return reflection_pb2.ServerReflectionResponse(
+            list_services_response=reflection_pb2.ListServiceResponse(service=[
                 reflection_pb2.ServiceResponse(name=service_name)
                 for service_name in self._service_names
-            ]
-        )
-    )
-
-  def ServerReflectionInfo(self, request_iterator, context):
-    for request in request_iterator:
-      if request.HasField('file_by_filename'):
-        yield self._file_by_filename(request.file_by_filename)
-      elif request.HasField('file_containing_symbol'):
-        yield self._file_containing_symbol(request.file_containing_symbol)
-      elif request.HasField('file_containing_extension'):
-        yield self._file_containing_extension(
-            request.file_containing_extension.containing_type,
-            request.file_containing_extension.extension_number)
-      elif request.HasField('all_extension_numbers_of_type'):
-        yield _all_extension_numbers_of_type(
-            request.all_extension_numbers_of_type)
-      elif request.HasField('list_services'):
-        yield self._list_services()
-      else:
-        yield reflection_pb2.ServerReflectionResponse(
-            error_response=reflection_pb2.ErrorResponse(
-                error_code=grpc.StatusCode.INVALID_ARGUMENT.value[0],
-                error_message=grpc.StatusCode.INVALID_ARGUMENT.value[1].encode(),
-            )
-        )
-
+            ]))
+
+    def ServerReflectionInfo(self, request_iterator, context):
+        for request in request_iterator:
+            if request.HasField('file_by_filename'):
+                yield self._file_by_filename(request.file_by_filename)
+            elif request.HasField('file_containing_symbol'):
+                yield self._file_containing_symbol(
+                    request.file_containing_symbol)
+            elif request.HasField('file_containing_extension'):
+                yield self._file_containing_extension(
+                    request.file_containing_extension.containing_type,
+                    request.file_containing_extension.extension_number)
+            elif request.HasField('all_extension_numbers_of_type'):
+                yield _all_extension_numbers_of_type(
+                    request.all_extension_numbers_of_type)
+            elif request.HasField('list_services'):
+                yield self._list_services()
+            else:
+                yield reflection_pb2.ServerReflectionResponse(
+                    error_response=reflection_pb2.ErrorResponse(
+                        error_code=grpc.StatusCode.INVALID_ARGUMENT.value[0],
+                        error_message=grpc.StatusCode.INVALID_ARGUMENT.value[1]
+                        .encode(),))
diff --git a/src/python/grpcio_reflection/reflection_commands.py b/src/python/grpcio_reflection/reflection_commands.py
index dee5491e0adc239b25790d97f956be5388109876..62237e097198d45653f1237a9865c77e38c88074 100644
--- a/src/python/grpcio_reflection/reflection_commands.py
+++ b/src/python/grpcio_reflection/reflection_commands.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Provides distutils command classes for the GRPC Python setup process."""
 
 import os
@@ -35,44 +34,46 @@ import shutil
 import setuptools
 
 ROOT_DIR = os.path.abspath(os.path.dirname(os.path.abspath(__file__)))
-HEALTH_PROTO = os.path.join(ROOT_DIR, '../../proto/grpc/reflection/v1alpha/reflection.proto')
+HEALTH_PROTO = os.path.join(
+    ROOT_DIR, '../../proto/grpc/reflection/v1alpha/reflection.proto')
 
 
 class CopyProtoModules(setuptools.Command):
-  """Command to copy proto modules from grpc/src/proto."""
+    """Command to copy proto modules from grpc/src/proto."""
 
-  description = ''
-  user_options = []
+    description = ''
+    user_options = []
 
-  def initialize_options(self):
-    pass
+    def initialize_options(self):
+        pass
 
-  def finalize_options(self):
-    pass
+    def finalize_options(self):
+        pass
 
-  def run(self):
-    if os.path.isfile(HEALTH_PROTO):
-      shutil.copyfile(
-          HEALTH_PROTO,
-          os.path.join(ROOT_DIR, 'grpc_reflection/v1alpha/reflection.proto'))
+    def run(self):
+        if os.path.isfile(HEALTH_PROTO):
+            shutil.copyfile(
+                HEALTH_PROTO,
+                os.path.join(ROOT_DIR,
+                             'grpc_reflection/v1alpha/reflection.proto'))
 
 
 class BuildPackageProtos(setuptools.Command):
-  """Command to generate project *_pb2.py modules from proto files."""
+    """Command to generate project *_pb2.py modules from proto files."""
 
-  description = 'build grpc protobuf modules'
-  user_options = []
+    description = 'build grpc protobuf modules'
+    user_options = []
 
-  def initialize_options(self):
-    pass
+    def initialize_options(self):
+        pass
 
-  def finalize_options(self):
-    pass
+    def finalize_options(self):
+        pass
 
-  def run(self):
-    # due to limitations of the proto generator, we require that only *one*
-    # directory is provided as an 'include' directory. We assume it's the '' key
-    # to `self.distribution.package_dir` (and get a key error if it's not
-    # there).
-    from grpc_tools import command
-    command.build_package_protos(self.distribution.package_dir[''])
+    def run(self):
+        # due to limitations of the proto generator, we require that only *one*
+        # directory is provided as an 'include' directory. We assume it's the '' key
+        # to `self.distribution.package_dir` (and get a key error if it's not
+        # there).
+        from grpc_tools import command
+        command.build_package_protos(self.distribution.package_dir[''])
diff --git a/src/python/grpcio_reflection/setup.py b/src/python/grpcio_reflection/setup.py
index cfc41f4fe74c2c9be203f06993002e21130ed83d..2926923029a56b1f17a84f43f39ee3f1ad567b26 100644
--- a/src/python/grpcio_reflection/setup.py
+++ b/src/python/grpcio_reflection/setup.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Setup module for the GRPC Python package's optional reflection."""
 
 import os
@@ -41,18 +40,14 @@ os.chdir(os.path.dirname(os.path.abspath(__file__)))
 import reflection_commands
 import grpc_version
 
-PACKAGE_DIRECTORIES = {
-    '': '.',
-}
+PACKAGE_DIRECTORIES = {'': '.',}
 
 SETUP_REQUIRES = (
-    'grpcio-tools>={version}'.format(version=grpc_version.VERSION),
-)
+    'grpcio-tools>={version}'.format(version=grpc_version.VERSION),)
 
 INSTALL_REQUIRES = (
     'protobuf>=3.0.0',
-    'grpcio>={version}'.format(version=grpc_version.VERSION),
-)
+    'grpcio>={version}'.format(version=grpc_version.VERSION),)
 
 COMMAND_CLASS = {
     # Run preprocess from the repository *before* doing any packaging!
@@ -68,5 +63,4 @@ setuptools.setup(
     packages=setuptools.find_packages('.'),
     install_requires=INSTALL_REQUIRES,
     setup_requires=SETUP_REQUIRES,
-    cmdclass=COMMAND_CLASS
-)
+    cmdclass=COMMAND_CLASS)
diff --git a/src/python/grpcio_tests/commands.py b/src/python/grpcio_tests/commands.py
index e822971fe0983c2aeec750ba2191574e9d7534a8..845b7f598c0c089dda3e7d2eaaab34ae3ae34710 100644
--- a/src/python/grpcio_tests/commands.py
+++ b/src/python/grpcio_tests/commands.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Provides distutils command classes for the gRPC Python setup process."""
 
 import distutils
@@ -55,163 +54,162 @@ PYTHON_PROTO_TOP_LEVEL = os.path.join(PYTHON_STEM, 'src')
 
 
 class CommandError(object):
-  pass
+    pass
 
 
 class GatherProto(setuptools.Command):
 
-  description = 'gather proto dependencies'
-  user_options = []
+    description = 'gather proto dependencies'
+    user_options = []
 
-  def initialize_options(self):
-    pass
+    def initialize_options(self):
+        pass
 
-  def finalize_options(self):
-    pass
+    def finalize_options(self):
+        pass
 
-  def run(self):
-    # TODO(atash) ensure that we're running from the repository directory when
-    # this command is used
-    try:
-      shutil.rmtree(PROTO_STEM)
-    except Exception as error:
-      # We don't care if this command fails
-      pass
-    shutil.copytree(GRPC_PROTO_STEM, PROTO_STEM)
-    for root, _, _ in os.walk(PYTHON_PROTO_TOP_LEVEL):
-      path = os.path.join(root, '__init__.py')
-      open(path, 'a').close()
+    def run(self):
+        # TODO(atash) ensure that we're running from the repository directory when
+        # this command is used
+        try:
+            shutil.rmtree(PROTO_STEM)
+        except Exception as error:
+            # We don't care if this command fails
+            pass
+        shutil.copytree(GRPC_PROTO_STEM, PROTO_STEM)
+        for root, _, _ in os.walk(PYTHON_PROTO_TOP_LEVEL):
+            path = os.path.join(root, '__init__.py')
+            open(path, 'a').close()
 
 
 class BuildProtoModules(setuptools.Command):
-  """Command to generate project *_pb2.py modules from proto files."""
-
-  description = 'build protobuf modules'
-  user_options = [
-    ('include=', None, 'path patterns to include in protobuf generation'),
-    ('exclude=', None, 'path patterns to exclude from protobuf generation')
-  ]
-
-  def initialize_options(self):
-    self.exclude = None
-    self.include = r'.*\.proto$'
-
-  def finalize_options(self):
-    pass
-
-  def run(self):
-    import grpc_tools.protoc as protoc
-
-    include_regex = re.compile(self.include)
-    exclude_regex = re.compile(self.exclude) if self.exclude else None
-    paths = []
-    for walk_root, directories, filenames in os.walk(PROTO_STEM):
-      for filename in filenames:
-        path = os.path.join(walk_root, filename)
-        if include_regex.match(path) and not (
-            exclude_regex and exclude_regex.match(path)):
-          paths.append(path)
-
-    # TODO(kpayson): It would be nice to do this in a batch command,
-    # but we currently have name conflicts in src/proto
-    for path in paths:
-      command = [
-          'grpc_tools.protoc',
-          '-I {}'.format(PROTO_STEM),
-          '--python_out={}'.format(PROTO_STEM),
-          '--grpc_python_out={}'.format(PROTO_STEM),
-      ] + [path]
-      if protoc.main(command) != 0:
-        sys.stderr.write(
-            'warning: Command:\n{}\nFailed'.format(
-                command))
-
-    # Generated proto directories dont include __init__.py, but
-    # these are needed for python package resolution
-    for walk_root, _, _ in os.walk(PROTO_STEM):
-      path = os.path.join(walk_root, '__init__.py')
-      open(path, 'a').close()
+    """Command to generate project *_pb2.py modules from proto files."""
+
+    description = 'build protobuf modules'
+    user_options = [
+        ('include=', None, 'path patterns to include in protobuf generation'),
+        ('exclude=', None, 'path patterns to exclude from protobuf generation')
+    ]
+
+    def initialize_options(self):
+        self.exclude = None
+        self.include = r'.*\.proto$'
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        import grpc_tools.protoc as protoc
+
+        include_regex = re.compile(self.include)
+        exclude_regex = re.compile(self.exclude) if self.exclude else None
+        paths = []
+        for walk_root, directories, filenames in os.walk(PROTO_STEM):
+            for filename in filenames:
+                path = os.path.join(walk_root, filename)
+                if include_regex.match(path) and not (
+                        exclude_regex and exclude_regex.match(path)):
+                    paths.append(path)
+
+        # TODO(kpayson): It would be nice to do this in a batch command,
+        # but we currently have name conflicts in src/proto
+        for path in paths:
+            command = [
+                'grpc_tools.protoc',
+                '-I {}'.format(PROTO_STEM),
+                '--python_out={}'.format(PROTO_STEM),
+                '--grpc_python_out={}'.format(PROTO_STEM),
+            ] + [path]
+            if protoc.main(command) != 0:
+                sys.stderr.write('warning: Command:\n{}\nFailed'.format(
+                    command))
+
+        # Generated proto directories dont include __init__.py, but
+        # these are needed for python package resolution
+        for walk_root, _, _ in os.walk(PROTO_STEM):
+            path = os.path.join(walk_root, '__init__.py')
+            open(path, 'a').close()
 
 
 class BuildPy(build_py.build_py):
-  """Custom project build command."""
+    """Custom project build command."""
 
-  def run(self):
-    try:
-      self.run_command('build_package_protos')
-    except CommandError as error:
-      sys.stderr.write('warning: %s\n' % error.message)
-    build_py.build_py.run(self)
+    def run(self):
+        try:
+            self.run_command('build_package_protos')
+        except CommandError as error:
+            sys.stderr.write('warning: %s\n' % error.message)
+        build_py.build_py.run(self)
 
 
 class TestLite(setuptools.Command):
-  """Command to run tests without fetching or building anything."""
+    """Command to run tests without fetching or building anything."""
 
-  description = 'run tests without fetching or building anything.'
-  user_options = []
+    description = 'run tests without fetching or building anything.'
+    user_options = []
 
-  def initialize_options(self):
-    pass
+    def initialize_options(self):
+        pass
 
-  def finalize_options(self):
-    # distutils requires this override.
-    pass
+    def finalize_options(self):
+        # distutils requires this override.
+        pass
 
-  def run(self):
-    self._add_eggs_to_path()
+    def run(self):
+        self._add_eggs_to_path()
 
-    import tests
-    loader = tests.Loader()
-    loader.loadTestsFromNames(['tests'])
-    runner = tests.Runner()
-    result = runner.run(loader.suite)
-    if not result.wasSuccessful():
-      sys.exit('Test failure')
+        import tests
+        loader = tests.Loader()
+        loader.loadTestsFromNames(['tests'])
+        runner = tests.Runner()
+        result = runner.run(loader.suite)
+        if not result.wasSuccessful():
+            sys.exit('Test failure')
 
-  def _add_eggs_to_path(self):
-    """Fetch install and test requirements"""
-    self.distribution.fetch_build_eggs(self.distribution.install_requires)
-    self.distribution.fetch_build_eggs(self.distribution.tests_require)
+    def _add_eggs_to_path(self):
+        """Fetch install and test requirements"""
+        self.distribution.fetch_build_eggs(self.distribution.install_requires)
+        self.distribution.fetch_build_eggs(self.distribution.tests_require)
 
 
 class RunInterop(test.test):
 
-  description = 'run interop test client/server'
-  user_options = [
-    ('args=', 'a', 'pass-thru arguments for the client/server'),
-    ('client', 'c', 'flag indicating to run the client'),
-    ('server', 's', 'flag indicating to run the server')
-  ]
-
-  def initialize_options(self):
-    self.args = ''
-    self.client = False
-    self.server = False
-
-  def finalize_options(self):
-    if self.client and self.server:
-      raise DistutilsOptionError('you may only specify one of client or server')
-
-  def run(self):
-    if self.distribution.install_requires:
-      self.distribution.fetch_build_eggs(self.distribution.install_requires)
-    if self.distribution.tests_require:
-      self.distribution.fetch_build_eggs(self.distribution.tests_require)
-    if self.client:
-      self.run_client()
-    elif self.server:
-      self.run_server()
-
-  def run_server(self):
-    # We import here to ensure that our setuptools parent has had a chance to
-    # edit the Python system path.
-    from tests.interop import server
-    sys.argv[1:] = self.args.split()
-    server.serve()
-
-  def run_client(self):
-    # We import here to ensure that our setuptools parent has had a chance to
-    # edit the Python system path.
-    from tests.interop import client
-    sys.argv[1:] = self.args.split()
-    client.test_interoperability()
+    description = 'run interop test client/server'
+    user_options = [('args=', 'a', 'pass-thru arguments for the client/server'),
+                    ('client', 'c', 'flag indicating to run the client'),
+                    ('server', 's', 'flag indicating to run the server')]
+
+    def initialize_options(self):
+        self.args = ''
+        self.client = False
+        self.server = False
+
+    def finalize_options(self):
+        if self.client and self.server:
+            raise DistutilsOptionError(
+                'you may only specify one of client or server')
+
+    def run(self):
+        if self.distribution.install_requires:
+            self.distribution.fetch_build_eggs(
+                self.distribution.install_requires)
+        if self.distribution.tests_require:
+            self.distribution.fetch_build_eggs(self.distribution.tests_require)
+        if self.client:
+            self.run_client()
+        elif self.server:
+            self.run_server()
+
+    def run_server(self):
+        # We import here to ensure that our setuptools parent has had a chance to
+        # edit the Python system path.
+        from tests.interop import server
+        sys.argv[1:] = self.args.split()
+        server.serve()
+
+    def run_client(self):
+        # We import here to ensure that our setuptools parent has had a chance to
+        # edit the Python system path.
+        from tests.interop import client
+        sys.argv[1:] = self.args.split()
+        client.test_interoperability()
diff --git a/src/python/grpcio_tests/setup.py b/src/python/grpcio_tests/setup.py
index 375fbd6c77decb7798fd1b2ade2a8d08dbe613f1..f0407d1a557a7292b3604ec575bc632facd68279 100644
--- a/src/python/grpcio_tests/setup.py
+++ b/src/python/grpcio_tests/setup.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """A setup module for the gRPC Python package."""
 
 import os
@@ -48,9 +47,7 @@ import grpc_version
 
 LICENSE = '3-clause BSD'
 
-PACKAGE_DIRECTORIES = {
-    '': '.',
-}
+PACKAGE_DIRECTORIES = {'': '.',}
 
 INSTALL_REQUIRES = (
     'coverage>=4.0',
@@ -61,13 +58,11 @@ INSTALL_REQUIRES = (
     'grpcio-health-checking>={version}'.format(version=grpc_version.VERSION),
     'oauth2client>=1.4.7',
     'protobuf>=3.0.0',
-    'six>=1.10',
-)
+    'six>=1.10',)
 
 COMMAND_CLASS = {
     # Run `preprocess` *before* doing any packaging!
     'preprocess': commands.GatherProto,
-
     'build_package_protos': grpc_tools.command.BuildPackageProtos,
     'build_py': commands.BuildPy,
     'run_interop': commands.RunInterop,
@@ -80,9 +75,7 @@ PACKAGE_DATA = {
         'credentials/server1.key',
         'credentials/server1.pem',
     ],
-    'tests.protoc_plugin.protos.invocation_testing': [
-        'same.proto',
-    ],
+    'tests.protoc_plugin.protos.invocation_testing': ['same.proto',],
     'tests.protoc_plugin.protos.invocation_testing.split_messages': [
         'messages.proto',
     ],
@@ -94,9 +87,7 @@ PACKAGE_DATA = {
         'credentials/server1.key',
         'credentials/server1.pem',
     ],
-    'tests': [
-        'tests.json'
-    ],
+    'tests': ['tests.json'],
 }
 
 TEST_SUITE = 'tests'
@@ -107,16 +98,15 @@ TESTS_REQUIRE = INSTALL_REQUIRES
 PACKAGES = setuptools.find_packages('.')
 
 setuptools.setup(
-  name='grpcio-tests',
-  version=grpc_version.VERSION,
-  license=LICENSE,
-  packages=list(PACKAGES),
-  package_dir=PACKAGE_DIRECTORIES,
-  package_data=PACKAGE_DATA,
-  install_requires=INSTALL_REQUIRES,
-  cmdclass=COMMAND_CLASS,
-  tests_require=TESTS_REQUIRE,
-  test_suite=TEST_SUITE,
-  test_loader=TEST_LOADER,
-  test_runner=TEST_RUNNER,
-)
+    name='grpcio-tests',
+    version=grpc_version.VERSION,
+    license=LICENSE,
+    packages=list(PACKAGES),
+    package_dir=PACKAGE_DIRECTORIES,
+    package_data=PACKAGE_DATA,
+    install_requires=INSTALL_REQUIRES,
+    cmdclass=COMMAND_CLASS,
+    tests_require=TESTS_REQUIRE,
+    test_suite=TEST_SUITE,
+    test_loader=TEST_LOADER,
+    test_runner=TEST_RUNNER,)
diff --git a/src/python/grpcio_tests/tests/_loader.py b/src/python/grpcio_tests/tests/_loader.py
index 621bedc7bb8c57a9db3264779bba3c8f5dcff2c6..42cf9ab4cac47f24842535e179636c720212c21a 100644
--- a/src/python/grpcio_tests/tests/_loader.py
+++ b/src/python/grpcio_tests/tests/_loader.py
@@ -40,7 +40,7 @@ TEST_MODULE_REGEX = r'^.*_test$'
 
 
 class Loader(object):
-  """Test loader for setuptools test suite support.
+    """Test loader for setuptools test suite support.
 
   Attributes:
     suite (unittest.TestSuite): All tests collected by the loader.
@@ -51,57 +51,57 @@ class Loader(object):
       contributes to the test suite.
   """
 
-  def __init__(self):
-    self.suite = unittest.TestSuite()
-    self.loader = unittest.TestLoader()
-    self.module_matcher = re.compile(TEST_MODULE_REGEX)
+    def __init__(self):
+        self.suite = unittest.TestSuite()
+        self.loader = unittest.TestLoader()
+        self.module_matcher = re.compile(TEST_MODULE_REGEX)
 
-  def loadTestsFromNames(self, names, module=None):
-    """Function mirroring TestLoader::loadTestsFromNames, as expected by
+    def loadTestsFromNames(self, names, module=None):
+        """Function mirroring TestLoader::loadTestsFromNames, as expected by
     setuptools.setup argument `test_loader`."""
-    # ensure that we capture decorators and definitions (else our coverage
-    # measure unnecessarily suffers)
-    coverage_context = coverage.Coverage(data_suffix=True)
-    coverage_context.start()
-    modules = [importlib.import_module(name) for name in names]
-    for module in modules:
-      self.visit_module(module)
-    for module in modules:
-      try:
-        package_paths = module.__path__
-      except:
-        continue
-      self.walk_packages(package_paths)
-    coverage_context.stop()
-    coverage_context.save()
-    return self.suite
-
-  def walk_packages(self, package_paths):
-    """Walks over the packages, dispatching `visit_module` calls.
+        # ensure that we capture decorators and definitions (else our coverage
+        # measure unnecessarily suffers)
+        coverage_context = coverage.Coverage(data_suffix=True)
+        coverage_context.start()
+        modules = [importlib.import_module(name) for name in names]
+        for module in modules:
+            self.visit_module(module)
+        for module in modules:
+            try:
+                package_paths = module.__path__
+            except:
+                continue
+            self.walk_packages(package_paths)
+        coverage_context.stop()
+        coverage_context.save()
+        return self.suite
+
+    def walk_packages(self, package_paths):
+        """Walks over the packages, dispatching `visit_module` calls.
 
     Args:
       package_paths (list): A list of paths over which to walk through modules
         along.
     """
-    for importer, module_name, is_package in (
-        pkgutil.walk_packages(package_paths)):
-      module = importer.find_module(module_name).load_module(module_name)
-      self.visit_module(module)
+        for importer, module_name, is_package in (
+                pkgutil.walk_packages(package_paths)):
+            module = importer.find_module(module_name).load_module(module_name)
+            self.visit_module(module)
 
-  def visit_module(self, module):
-    """Visits the module, adding discovered tests to the test suite.
+    def visit_module(self, module):
+        """Visits the module, adding discovered tests to the test suite.
 
     Args:
       module (module): Module to match against self.module_matcher; if matched
         it has its tests loaded via self.loader into self.suite.
     """
-    if self.module_matcher.match(module.__name__):
-      module_suite = self.loader.loadTestsFromModule(module)
-      self.suite.addTest(module_suite)
+        if self.module_matcher.match(module.__name__):
+            module_suite = self.loader.loadTestsFromModule(module)
+            self.suite.addTest(module_suite)
 
 
 def iterate_suite_cases(suite):
-  """Generator over all unittest.TestCases in a unittest.TestSuite.
+    """Generator over all unittest.TestCases in a unittest.TestSuite.
 
   Args:
     suite (unittest.TestSuite): Suite to iterate over in the generator.
@@ -109,11 +109,12 @@ def iterate_suite_cases(suite):
   Returns:
     generator: A generator over all unittest.TestCases in `suite`.
   """
-  for item in suite:
-    if isinstance(item, unittest.TestSuite):
-      for child_item in iterate_suite_cases(item):
-        yield child_item
-    elif isinstance(item, unittest.TestCase):
-      yield item
-    else:
-      raise ValueError('unexpected suite item of type {}'.format(type(item)))
+    for item in suite:
+        if isinstance(item, unittest.TestSuite):
+            for child_item in iterate_suite_cases(item):
+                yield child_item
+        elif isinstance(item, unittest.TestCase):
+            yield item
+        else:
+            raise ValueError('unexpected suite item of type {}'.format(
+                type(item)))
diff --git a/src/python/grpcio_tests/tests/_result.py b/src/python/grpcio_tests/tests/_result.py
index 1acec6a9b59c60b2efc293f9cfdd0778a8b24d54..794b7540f14368e1eac2d5072798b24ed7684187 100644
--- a/src/python/grpcio_tests/tests/_result.py
+++ b/src/python/grpcio_tests/tests/_result.py
@@ -41,9 +41,11 @@ from six import moves
 from tests import _loader
 
 
-class CaseResult(collections.namedtuple('CaseResult', [
-    'id', 'name', 'kind', 'stdout', 'stderr', 'skip_reason', 'traceback'])):
-  """A serializable result of a single test case.
+class CaseResult(
+        collections.namedtuple('CaseResult', [
+            'id', 'name', 'kind', 'stdout', 'stderr', 'skip_reason', 'traceback'
+        ])):
+    """A serializable result of a single test case.
 
   Attributes:
     id (object): Any serializable object used to denote the identity of this
@@ -59,62 +61,78 @@ class CaseResult(collections.namedtuple('CaseResult', [
       None.
   """
 
-  class Kind:
-    UNTESTED = 'untested'
-    RUNNING = 'running'
-    ERROR = 'error'
-    FAILURE = 'failure'
-    SUCCESS = 'success'
-    SKIP = 'skip'
-    EXPECTED_FAILURE = 'expected failure'
-    UNEXPECTED_SUCCESS = 'unexpected success'
-
-  def __new__(cls, id=None, name=None, kind=None, stdout=None, stderr=None,
-              skip_reason=None, traceback=None):
-    """Helper keyword constructor for the namedtuple.
+    class Kind:
+        UNTESTED = 'untested'
+        RUNNING = 'running'
+        ERROR = 'error'
+        FAILURE = 'failure'
+        SUCCESS = 'success'
+        SKIP = 'skip'
+        EXPECTED_FAILURE = 'expected failure'
+        UNEXPECTED_SUCCESS = 'unexpected success'
+
+    def __new__(cls,
+                id=None,
+                name=None,
+                kind=None,
+                stdout=None,
+                stderr=None,
+                skip_reason=None,
+                traceback=None):
+        """Helper keyword constructor for the namedtuple.
 
     See this class' attributes for information on the arguments."""
-    assert id is not None
-    assert name is None or isinstance(name, str)
-    if kind is CaseResult.Kind.UNTESTED:
-      pass
-    elif kind is CaseResult.Kind.RUNNING:
-      pass
-    elif kind is CaseResult.Kind.ERROR:
-      assert traceback is not None
-    elif kind is CaseResult.Kind.FAILURE:
-      assert traceback is not None
-    elif kind is CaseResult.Kind.SUCCESS:
-      pass
-    elif kind is CaseResult.Kind.SKIP:
-      assert skip_reason is not None
-    elif kind is CaseResult.Kind.EXPECTED_FAILURE:
-      assert traceback is not None
-    elif kind is CaseResult.Kind.UNEXPECTED_SUCCESS:
-      pass
-    else:
-      assert False
-    return super(cls, CaseResult).__new__(
-        cls, id, name, kind, stdout, stderr, skip_reason, traceback)
-
-  def updated(self, name=None, kind=None, stdout=None, stderr=None,
-              skip_reason=None, traceback=None):
-    """Get a new validated CaseResult with the fields updated.
+        assert id is not None
+        assert name is None or isinstance(name, str)
+        if kind is CaseResult.Kind.UNTESTED:
+            pass
+        elif kind is CaseResult.Kind.RUNNING:
+            pass
+        elif kind is CaseResult.Kind.ERROR:
+            assert traceback is not None
+        elif kind is CaseResult.Kind.FAILURE:
+            assert traceback is not None
+        elif kind is CaseResult.Kind.SUCCESS:
+            pass
+        elif kind is CaseResult.Kind.SKIP:
+            assert skip_reason is not None
+        elif kind is CaseResult.Kind.EXPECTED_FAILURE:
+            assert traceback is not None
+        elif kind is CaseResult.Kind.UNEXPECTED_SUCCESS:
+            pass
+        else:
+            assert False
+        return super(cls, CaseResult).__new__(cls, id, name, kind, stdout,
+                                              stderr, skip_reason, traceback)
+
+    def updated(self,
+                name=None,
+                kind=None,
+                stdout=None,
+                stderr=None,
+                skip_reason=None,
+                traceback=None):
+        """Get a new validated CaseResult with the fields updated.
 
     See this class' attributes for information on the arguments."""
-    name = self.name if name is None else name
-    kind = self.kind if kind is None else kind
-    stdout = self.stdout if stdout is None else stdout
-    stderr = self.stderr if stderr is None else stderr
-    skip_reason = self.skip_reason if skip_reason is None else skip_reason
-    traceback = self.traceback if traceback is None else traceback
-    return CaseResult(id=self.id, name=name, kind=kind, stdout=stdout,
-                      stderr=stderr, skip_reason=skip_reason,
-                      traceback=traceback)
+        name = self.name if name is None else name
+        kind = self.kind if kind is None else kind
+        stdout = self.stdout if stdout is None else stdout
+        stderr = self.stderr if stderr is None else stderr
+        skip_reason = self.skip_reason if skip_reason is None else skip_reason
+        traceback = self.traceback if traceback is None else traceback
+        return CaseResult(
+            id=self.id,
+            name=name,
+            kind=kind,
+            stdout=stdout,
+            stderr=stderr,
+            skip_reason=skip_reason,
+            traceback=traceback)
 
 
 class AugmentedResult(unittest.TestResult):
-  """unittest.Result that keeps track of additional information.
+    """unittest.Result that keeps track of additional information.
 
   Uses CaseResult objects to store test-case results, providing additional
   information beyond that of the standard Python unittest library, such as
@@ -127,228 +145,215 @@ class AugmentedResult(unittest.TestResult):
       to CaseResult objects corresponding to those IDs.
   """
 
-  def __init__(self, id_map):
-    """Initialize the object with an identifier mapping.
+    def __init__(self, id_map):
+        """Initialize the object with an identifier mapping.
 
     Arguments:
       id_map (callable): Corresponds to the attribute `id_map`."""
-    super(AugmentedResult, self).__init__()
-    self.id_map = id_map
-    self.cases = None
-
-  def startTestRun(self):
-    """See unittest.TestResult.startTestRun."""
-    super(AugmentedResult, self).startTestRun()
-    self.cases = dict()
-
-  def stopTestRun(self):
-    """See unittest.TestResult.stopTestRun."""
-    super(AugmentedResult, self).stopTestRun()
-
-  def startTest(self, test):
-    """See unittest.TestResult.startTest."""
-    super(AugmentedResult, self).startTest(test)
-    case_id = self.id_map(test)
-    self.cases[case_id] = CaseResult(
-        id=case_id, name=test.id(), kind=CaseResult.Kind.RUNNING)
-
-  def addError(self, test, error):
-    """See unittest.TestResult.addError."""
-    super(AugmentedResult, self).addError(test, error)
-    case_id = self.id_map(test)
-    self.cases[case_id] = self.cases[case_id].updated(
-        kind=CaseResult.Kind.ERROR, traceback=error)
-
-  def addFailure(self, test, error):
-    """See unittest.TestResult.addFailure."""
-    super(AugmentedResult, self).addFailure(test, error)
-    case_id = self.id_map(test)
-    self.cases[case_id] = self.cases[case_id].updated(
-        kind=CaseResult.Kind.FAILURE, traceback=error)
-
-  def addSuccess(self, test):
-    """See unittest.TestResult.addSuccess."""
-    super(AugmentedResult, self).addSuccess(test)
-    case_id = self.id_map(test)
-    self.cases[case_id] = self.cases[case_id].updated(
-        kind=CaseResult.Kind.SUCCESS)
-
-  def addSkip(self, test, reason):
-    """See unittest.TestResult.addSkip."""
-    super(AugmentedResult, self).addSkip(test, reason)
-    case_id = self.id_map(test)
-    self.cases[case_id] = self.cases[case_id].updated(
-        kind=CaseResult.Kind.SKIP, skip_reason=reason)
-
-  def addExpectedFailure(self, test, error):
-    """See unittest.TestResult.addExpectedFailure."""
-    super(AugmentedResult, self).addExpectedFailure(test, error)
-    case_id = self.id_map(test)
-    self.cases[case_id] = self.cases[case_id].updated(
-        kind=CaseResult.Kind.EXPECTED_FAILURE, traceback=error)
-
-  def addUnexpectedSuccess(self, test):
-    """See unittest.TestResult.addUnexpectedSuccess."""
-    super(AugmentedResult, self).addUnexpectedSuccess(test)
-    case_id = self.id_map(test)
-    self.cases[case_id] = self.cases[case_id].updated(
-        kind=CaseResult.Kind.UNEXPECTED_SUCCESS)
-
-  def set_output(self, test, stdout, stderr):
-    """Set the output attributes for the CaseResult corresponding to a test.
+        super(AugmentedResult, self).__init__()
+        self.id_map = id_map
+        self.cases = None
+
+    def startTestRun(self):
+        """See unittest.TestResult.startTestRun."""
+        super(AugmentedResult, self).startTestRun()
+        self.cases = dict()
+
+    def stopTestRun(self):
+        """See unittest.TestResult.stopTestRun."""
+        super(AugmentedResult, self).stopTestRun()
+
+    def startTest(self, test):
+        """See unittest.TestResult.startTest."""
+        super(AugmentedResult, self).startTest(test)
+        case_id = self.id_map(test)
+        self.cases[case_id] = CaseResult(
+            id=case_id, name=test.id(), kind=CaseResult.Kind.RUNNING)
+
+    def addError(self, test, error):
+        """See unittest.TestResult.addError."""
+        super(AugmentedResult, self).addError(test, error)
+        case_id = self.id_map(test)
+        self.cases[case_id] = self.cases[case_id].updated(
+            kind=CaseResult.Kind.ERROR, traceback=error)
+
+    def addFailure(self, test, error):
+        """See unittest.TestResult.addFailure."""
+        super(AugmentedResult, self).addFailure(test, error)
+        case_id = self.id_map(test)
+        self.cases[case_id] = self.cases[case_id].updated(
+            kind=CaseResult.Kind.FAILURE, traceback=error)
+
+    def addSuccess(self, test):
+        """See unittest.TestResult.addSuccess."""
+        super(AugmentedResult, self).addSuccess(test)
+        case_id = self.id_map(test)
+        self.cases[case_id] = self.cases[case_id].updated(
+            kind=CaseResult.Kind.SUCCESS)
+
+    def addSkip(self, test, reason):
+        """See unittest.TestResult.addSkip."""
+        super(AugmentedResult, self).addSkip(test, reason)
+        case_id = self.id_map(test)
+        self.cases[case_id] = self.cases[case_id].updated(
+            kind=CaseResult.Kind.SKIP, skip_reason=reason)
+
+    def addExpectedFailure(self, test, error):
+        """See unittest.TestResult.addExpectedFailure."""
+        super(AugmentedResult, self).addExpectedFailure(test, error)
+        case_id = self.id_map(test)
+        self.cases[case_id] = self.cases[case_id].updated(
+            kind=CaseResult.Kind.EXPECTED_FAILURE, traceback=error)
+
+    def addUnexpectedSuccess(self, test):
+        """See unittest.TestResult.addUnexpectedSuccess."""
+        super(AugmentedResult, self).addUnexpectedSuccess(test)
+        case_id = self.id_map(test)
+        self.cases[case_id] = self.cases[case_id].updated(
+            kind=CaseResult.Kind.UNEXPECTED_SUCCESS)
+
+    def set_output(self, test, stdout, stderr):
+        """Set the output attributes for the CaseResult corresponding to a test.
 
     Args:
       test (unittest.TestCase): The TestCase to set the outputs of.
       stdout (str): Output from stdout to assign to self.id_map(test).
       stderr (str): Output from stderr to assign to self.id_map(test).
     """
-    case_id = self.id_map(test)
-    self.cases[case_id] = self.cases[case_id].updated(
-        stdout=stdout.decode(), stderr=stderr.decode())
+        case_id = self.id_map(test)
+        self.cases[case_id] = self.cases[case_id].updated(
+            stdout=stdout.decode(), stderr=stderr.decode())
 
-  def augmented_results(self, filter):
-    """Convenience method to retrieve filtered case results.
+    def augmented_results(self, filter):
+        """Convenience method to retrieve filtered case results.
 
     Args:
       filter (callable): A unary predicate to filter over CaseResult objects.
     """
-    return (self.cases[case_id] for case_id in self.cases
-            if filter(self.cases[case_id]))
+        return (self.cases[case_id] for case_id in self.cases
+                if filter(self.cases[case_id]))
 
 
 class CoverageResult(AugmentedResult):
-  """Extension to AugmentedResult adding coverage.py support per test.\
+    """Extension to AugmentedResult adding coverage.py support per test.\
 
   Attributes:
     coverage_context (coverage.Coverage): coverage.py management object.
   """
 
-  def __init__(self, id_map):
-    """See AugmentedResult.__init__."""
-    super(CoverageResult, self).__init__(id_map=id_map)
-    self.coverage_context = None
+    def __init__(self, id_map):
+        """See AugmentedResult.__init__."""
+        super(CoverageResult, self).__init__(id_map=id_map)
+        self.coverage_context = None
 
-  def startTest(self, test):
-    """See unittest.TestResult.startTest.
+    def startTest(self, test):
+        """See unittest.TestResult.startTest.
 
     Additionally initializes and begins code coverage tracking."""
-    super(CoverageResult, self).startTest(test)
-    self.coverage_context = coverage.Coverage(data_suffix=True)
-    self.coverage_context.start()
+        super(CoverageResult, self).startTest(test)
+        self.coverage_context = coverage.Coverage(data_suffix=True)
+        self.coverage_context.start()
 
-  def stopTest(self, test):
-    """See unittest.TestResult.stopTest.
+    def stopTest(self, test):
+        """See unittest.TestResult.stopTest.
 
     Additionally stops and deinitializes code coverage tracking."""
-    super(CoverageResult, self).stopTest(test)
-    self.coverage_context.stop()
-    self.coverage_context.save()
-    self.coverage_context = None
+        super(CoverageResult, self).stopTest(test)
+        self.coverage_context.stop()
+        self.coverage_context.save()
+        self.coverage_context = None
 
-  def stopTestRun(self):
-    """See unittest.TestResult.stopTestRun."""
-    super(CoverageResult, self).stopTestRun()
-    # TODO(atash): Dig deeper into why the following line fails to properly
-    # combine coverage data from the Cython plugin.
-    #coverage.Coverage().combine()
+    def stopTestRun(self):
+        """See unittest.TestResult.stopTestRun."""
+        super(CoverageResult, self).stopTestRun()
+        # TODO(atash): Dig deeper into why the following line fails to properly
+        # combine coverage data from the Cython plugin.
+        #coverage.Coverage().combine()
 
 
 class _Colors:
-  """Namespaced constants for terminal color magic numbers."""
-  HEADER = '\033[95m'
-  INFO = '\033[94m'
-  OK = '\033[92m'
-  WARN = '\033[93m'
-  FAIL = '\033[91m'
-  BOLD = '\033[1m'
-  UNDERLINE = '\033[4m'
-  END = '\033[0m'
+    """Namespaced constants for terminal color magic numbers."""
+    HEADER = '\033[95m'
+    INFO = '\033[94m'
+    OK = '\033[92m'
+    WARN = '\033[93m'
+    FAIL = '\033[91m'
+    BOLD = '\033[1m'
+    UNDERLINE = '\033[4m'
+    END = '\033[0m'
 
 
 class TerminalResult(CoverageResult):
-  """Extension to CoverageResult adding basic terminal reporting."""
+    """Extension to CoverageResult adding basic terminal reporting."""
 
-  def __init__(self, out, id_map):
-    """Initialize the result object.
+    def __init__(self, out, id_map):
+        """Initialize the result object.
 
     Args:
       out (file-like): Output file to which terminal-colored live results will
         be written.
       id_map (callable): See AugmentedResult.__init__.
     """
-    super(TerminalResult, self).__init__(id_map=id_map)
-    self.out = out
-
-  def startTestRun(self):
-    """See unittest.TestResult.startTestRun."""
-    super(TerminalResult, self).startTestRun()
-    self.out.write(
-        _Colors.HEADER +
-        'Testing gRPC Python...\n' +
-        _Colors.END)
-
-  def stopTestRun(self):
-    """See unittest.TestResult.stopTestRun."""
-    super(TerminalResult, self).stopTestRun()
-    self.out.write(summary(self))
-    self.out.flush()
-
-  def addError(self, test, error):
-    """See unittest.TestResult.addError."""
-    super(TerminalResult, self).addError(test, error)
-    self.out.write(
-        _Colors.FAIL +
-        'ERROR         {}\n'.format(test.id()) +
-        _Colors.END)
-    self.out.flush()
-
-  def addFailure(self, test, error):
-    """See unittest.TestResult.addFailure."""
-    super(TerminalResult, self).addFailure(test, error)
-    self.out.write(
-        _Colors.FAIL +
-        'FAILURE       {}\n'.format(test.id()) +
-        _Colors.END)
-    self.out.flush()
-
-  def addSuccess(self, test):
-    """See unittest.TestResult.addSuccess."""
-    super(TerminalResult, self).addSuccess(test)
-    self.out.write(
-        _Colors.OK +
-        'SUCCESS       {}\n'.format(test.id()) +
-        _Colors.END)
-    self.out.flush()
-
-  def addSkip(self, test, reason):
-    """See unittest.TestResult.addSkip."""
-    super(TerminalResult, self).addSkip(test, reason)
-    self.out.write(
-        _Colors.INFO +
-        'SKIP          {}\n'.format(test.id()) +
-        _Colors.END)
-    self.out.flush()
-
-  def addExpectedFailure(self, test, error):
-    """See unittest.TestResult.addExpectedFailure."""
-    super(TerminalResult, self).addExpectedFailure(test, error)
-    self.out.write(
-        _Colors.INFO +
-        'FAILURE_OK    {}\n'.format(test.id()) +
-        _Colors.END)
-    self.out.flush()
-
-  def addUnexpectedSuccess(self, test):
-    """See unittest.TestResult.addUnexpectedSuccess."""
-    super(TerminalResult, self).addUnexpectedSuccess(test)
-    self.out.write(
-        _Colors.INFO +
-        'UNEXPECTED_OK {}\n'.format(test.id()) +
-        _Colors.END)
-    self.out.flush()
+        super(TerminalResult, self).__init__(id_map=id_map)
+        self.out = out
+
+    def startTestRun(self):
+        """See unittest.TestResult.startTestRun."""
+        super(TerminalResult, self).startTestRun()
+        self.out.write(_Colors.HEADER + 'Testing gRPC Python...\n' +
+                       _Colors.END)
+
+    def stopTestRun(self):
+        """See unittest.TestResult.stopTestRun."""
+        super(TerminalResult, self).stopTestRun()
+        self.out.write(summary(self))
+        self.out.flush()
+
+    def addError(self, test, error):
+        """See unittest.TestResult.addError."""
+        super(TerminalResult, self).addError(test, error)
+        self.out.write(_Colors.FAIL + 'ERROR         {}\n'.format(test.id()) +
+                       _Colors.END)
+        self.out.flush()
+
+    def addFailure(self, test, error):
+        """See unittest.TestResult.addFailure."""
+        super(TerminalResult, self).addFailure(test, error)
+        self.out.write(_Colors.FAIL + 'FAILURE       {}\n'.format(test.id()) +
+                       _Colors.END)
+        self.out.flush()
+
+    def addSuccess(self, test):
+        """See unittest.TestResult.addSuccess."""
+        super(TerminalResult, self).addSuccess(test)
+        self.out.write(_Colors.OK + 'SUCCESS       {}\n'.format(test.id()) +
+                       _Colors.END)
+        self.out.flush()
+
+    def addSkip(self, test, reason):
+        """See unittest.TestResult.addSkip."""
+        super(TerminalResult, self).addSkip(test, reason)
+        self.out.write(_Colors.INFO + 'SKIP          {}\n'.format(test.id()) +
+                       _Colors.END)
+        self.out.flush()
+
+    def addExpectedFailure(self, test, error):
+        """See unittest.TestResult.addExpectedFailure."""
+        super(TerminalResult, self).addExpectedFailure(test, error)
+        self.out.write(_Colors.INFO + 'FAILURE_OK    {}\n'.format(test.id()) +
+                       _Colors.END)
+        self.out.flush()
+
+    def addUnexpectedSuccess(self, test):
+        """See unittest.TestResult.addUnexpectedSuccess."""
+        super(TerminalResult, self).addUnexpectedSuccess(test)
+        self.out.write(_Colors.INFO + 'UNEXPECTED_OK {}\n'.format(test.id()) +
+                       _Colors.END)
+        self.out.flush()
+
 
 def _traceback_string(type, value, trace):
-  """Generate a descriptive string of a Python exception traceback.
+    """Generate a descriptive string of a Python exception traceback.
 
   Args:
     type (class): The type of the exception.
@@ -358,12 +363,13 @@ def _traceback_string(type, value, trace):
   Returns:
     str: Formatted exception descriptive string.
   """
-  buffer = moves.cStringIO()
-  traceback.print_exception(type, value, trace, file=buffer)
-  return buffer.getvalue()
+    buffer = moves.cStringIO()
+    traceback.print_exception(type, value, trace, file=buffer)
+    return buffer.getvalue()
+
 
 def summary(result):
-  """A summary string of a result object.
+    """A summary string of a result object.
 
   Args:
     result (AugmentedResult): The result object to get the summary of.
@@ -371,62 +377,68 @@ def summary(result):
   Returns:
     str: The summary string.
   """
-  assert isinstance(result, AugmentedResult)
-  untested = list(result.augmented_results(
-      lambda case_result: case_result.kind is CaseResult.Kind.UNTESTED))
-  running = list(result.augmented_results(
-      lambda case_result: case_result.kind is CaseResult.Kind.RUNNING))
-  failures = list(result.augmented_results(
-      lambda case_result: case_result.kind is CaseResult.Kind.FAILURE))
-  errors = list(result.augmented_results(
-      lambda case_result: case_result.kind is CaseResult.Kind.ERROR))
-  successes = list(result.augmented_results(
-      lambda case_result: case_result.kind is CaseResult.Kind.SUCCESS))
-  skips = list(result.augmented_results(
-      lambda case_result: case_result.kind is CaseResult.Kind.SKIP))
-  expected_failures = list(result.augmented_results(
-      lambda case_result: case_result.kind is CaseResult.Kind.EXPECTED_FAILURE))
-  unexpected_successes = list(result.augmented_results(
-      lambda case_result: case_result.kind is CaseResult.Kind.UNEXPECTED_SUCCESS))
-  running_names = [case.name for case in running]
-  finished_count = (len(failures) + len(errors) + len(successes) +
-                    len(expected_failures) + len(unexpected_successes))
-  statistics = (
-      '{finished} tests finished:\n'
-      '\t{successful} successful\n'
-      '\t{unsuccessful} unsuccessful\n'
-      '\t{skipped} skipped\n'
-      '\t{expected_fail} expected failures\n'
-      '\t{unexpected_successful} unexpected successes\n'
-      'Interrupted Tests:\n'
-      '\t{interrupted}\n'
-      .format(finished=finished_count,
-              successful=len(successes),
-              unsuccessful=(len(failures)+len(errors)),
-              skipped=len(skips),
-              expected_fail=len(expected_failures),
-              unexpected_successful=len(unexpected_successes),
-              interrupted=str(running_names)))
-  tracebacks = '\n\n'.join([
-      (_Colors.FAIL + '{test_name}' + _Colors.END + '\n' +
-       _Colors.BOLD + 'traceback:' + _Colors.END + '\n' +
-       '{traceback}\n' +
-       _Colors.BOLD + 'stdout:' + _Colors.END + '\n' +
-       '{stdout}\n' +
-       _Colors.BOLD + 'stderr:' + _Colors.END + '\n' +
-       '{stderr}\n').format(
-           test_name=result.name,
-           traceback=_traceback_string(*result.traceback),
-           stdout=result.stdout, stderr=result.stderr)
-      for result in itertools.chain(failures, errors)
-  ])
-  notes = 'Unexpected successes: {}\n'.format([
-      result.name for result in unexpected_successes])
-  return statistics + '\nErrors/Failures: \n' + tracebacks + '\n' + notes
+    assert isinstance(result, AugmentedResult)
+    untested = list(
+        result.augmented_results(
+            lambda case_result: case_result.kind is CaseResult.Kind.UNTESTED))
+    running = list(
+        result.augmented_results(
+            lambda case_result: case_result.kind is CaseResult.Kind.RUNNING))
+    failures = list(
+        result.augmented_results(
+            lambda case_result: case_result.kind is CaseResult.Kind.FAILURE))
+    errors = list(
+        result.augmented_results(
+            lambda case_result: case_result.kind is CaseResult.Kind.ERROR))
+    successes = list(
+        result.augmented_results(
+            lambda case_result: case_result.kind is CaseResult.Kind.SUCCESS))
+    skips = list(
+        result.augmented_results(
+            lambda case_result: case_result.kind is CaseResult.Kind.SKIP))
+    expected_failures = list(
+        result.augmented_results(
+            lambda case_result: case_result.kind is CaseResult.Kind.EXPECTED_FAILURE
+        ))
+    unexpected_successes = list(
+        result.augmented_results(
+            lambda case_result: case_result.kind is CaseResult.Kind.UNEXPECTED_SUCCESS
+        ))
+    running_names = [case.name for case in running]
+    finished_count = (len(failures) + len(errors) + len(successes) +
+                      len(expected_failures) + len(unexpected_successes))
+    statistics = ('{finished} tests finished:\n'
+                  '\t{successful} successful\n'
+                  '\t{unsuccessful} unsuccessful\n'
+                  '\t{skipped} skipped\n'
+                  '\t{expected_fail} expected failures\n'
+                  '\t{unexpected_successful} unexpected successes\n'
+                  'Interrupted Tests:\n'
+                  '\t{interrupted}\n'.format(
+                      finished=finished_count,
+                      successful=len(successes),
+                      unsuccessful=(len(failures) + len(errors)),
+                      skipped=len(skips),
+                      expected_fail=len(expected_failures),
+                      unexpected_successful=len(unexpected_successes),
+                      interrupted=str(running_names)))
+    tracebacks = '\n\n'.join(
+        [(_Colors.FAIL + '{test_name}' + _Colors.END + '\n' + _Colors.BOLD +
+          'traceback:' + _Colors.END + '\n' + '{traceback}\n' + _Colors.BOLD +
+          'stdout:' + _Colors.END + '\n' + '{stdout}\n' + _Colors.BOLD +
+          'stderr:' + _Colors.END + '\n' + '{stderr}\n').format(
+              test_name=result.name,
+              traceback=_traceback_string(*result.traceback),
+              stdout=result.stdout,
+              stderr=result.stderr)
+         for result in itertools.chain(failures, errors)])
+    notes = 'Unexpected successes: {}\n'.format(
+        [result.name for result in unexpected_successes])
+    return statistics + '\nErrors/Failures: \n' + tracebacks + '\n' + notes
 
 
 def jenkins_junit_xml(result):
-  """An XML tree object that when written is recognizable by Jenkins.
+    """An XML tree object that when written is recognizable by Jenkins.
 
   Args:
     result (AugmentedResult): The result object to get the junit xml output of.
@@ -434,20 +446,18 @@ def jenkins_junit_xml(result):
   Returns:
     ElementTree.ElementTree: The XML tree.
   """
-  assert isinstance(result, AugmentedResult)
-  root = ElementTree.Element('testsuites')
-  suite = ElementTree.SubElement(root, 'testsuite', {
-      'name': 'Python gRPC tests',
-  })
-  for case in result.cases.values():
-    if case.kind is CaseResult.Kind.SUCCESS:
-      ElementTree.SubElement(suite, 'testcase', {
-          'name': case.name,
-      })
-    elif case.kind in (CaseResult.Kind.ERROR, CaseResult.Kind.FAILURE):
-      case_xml = ElementTree.SubElement(suite, 'testcase', {
-          'name': case.name,
-      })
-      error_xml = ElementTree.SubElement(case_xml, 'error', {})
-      error_xml.text = ''.format(case.stderr, case.traceback)
-  return ElementTree.ElementTree(element=root)
+    assert isinstance(result, AugmentedResult)
+    root = ElementTree.Element('testsuites')
+    suite = ElementTree.SubElement(root, 'testsuite', {
+        'name': 'Python gRPC tests',
+    })
+    for case in result.cases.values():
+        if case.kind is CaseResult.Kind.SUCCESS:
+            ElementTree.SubElement(suite, 'testcase', {'name': case.name,})
+        elif case.kind in (CaseResult.Kind.ERROR, CaseResult.Kind.FAILURE):
+            case_xml = ElementTree.SubElement(suite, 'testcase', {
+                'name': case.name,
+            })
+            error_xml = ElementTree.SubElement(case_xml, 'error', {})
+            error_xml.text = ''.format(case.stderr, case.traceback)
+    return ElementTree.ElementTree(element=root)
diff --git a/src/python/grpcio_tests/tests/_runner.py b/src/python/grpcio_tests/tests/_runner.py
index 926dcbe23a1a7824623777ef748afced5ae39df2..59964b271c7e642443751d5c051f22bbde5060ee 100644
--- a/src/python/grpcio_tests/tests/_runner.py
+++ b/src/python/grpcio_tests/tests/_runner.py
@@ -49,7 +49,7 @@ from tests import _result
 
 
 class CaptureFile(object):
-  """A context-managed file to redirect output to a byte array.
+    """A context-managed file to redirect output to a byte array.
 
   Use by invoking `start` (`__enter__`) and at some point invoking `stop`
   (`__exit__`). At any point after the initial call to `start` call `output` to
@@ -66,57 +66,56 @@ class CaptureFile(object):
       Only non-None when self is started.
   """
 
-  def __init__(self, fd):
-    self._redirected_fd = fd
-    self._saved_fd = os.dup(self._redirected_fd)
-    self._into_file = None
+    def __init__(self, fd):
+        self._redirected_fd = fd
+        self._saved_fd = os.dup(self._redirected_fd)
+        self._into_file = None
 
-  def output(self):
-    """Get all output from the redirected-to file if it exists."""
-    if self._into_file:
-      self._into_file.seek(0)
-      return bytes(self._into_file.read())
-    else:
-      return bytes()
+    def output(self):
+        """Get all output from the redirected-to file if it exists."""
+        if self._into_file:
+            self._into_file.seek(0)
+            return bytes(self._into_file.read())
+        else:
+            return bytes()
 
-  def start(self):
-    """Start redirection of writes to the file descriptor."""
-    self._into_file = tempfile.TemporaryFile()
-    os.dup2(self._into_file.fileno(), self._redirected_fd)
+    def start(self):
+        """Start redirection of writes to the file descriptor."""
+        self._into_file = tempfile.TemporaryFile()
+        os.dup2(self._into_file.fileno(), self._redirected_fd)
 
-  def stop(self):
-    """Stop redirection of writes to the file descriptor."""
-    # n.b. this dup2 call auto-closes self._redirected_fd
-    os.dup2(self._saved_fd, self._redirected_fd)
+    def stop(self):
+        """Stop redirection of writes to the file descriptor."""
+        # n.b. this dup2 call auto-closes self._redirected_fd
+        os.dup2(self._saved_fd, self._redirected_fd)
 
-  def write_bypass(self, value):
-    """Bypass the redirection and write directly to the original file.
+    def write_bypass(self, value):
+        """Bypass the redirection and write directly to the original file.
 
     Arguments:
       value (str): What to write to the original file.
     """
-    if six.PY3 and not isinstance(value, six.binary_type):
-      value = bytes(value, 'ascii')
-    if self._saved_fd is None:
-      os.write(self._redirect_fd, value)
-    else:
-      os.write(self._saved_fd, value)
+        if six.PY3 and not isinstance(value, six.binary_type):
+            value = bytes(value, 'ascii')
+        if self._saved_fd is None:
+            os.write(self._redirect_fd, value)
+        else:
+            os.write(self._saved_fd, value)
 
-  def __enter__(self):
-    self.start()
-    return self
+    def __enter__(self):
+        self.start()
+        return self
 
-  def __exit__(self, type, value, traceback):
-    self.stop()
+    def __exit__(self, type, value, traceback):
+        self.stop()
 
-  def close(self):
-    """Close any resources used by self not closed by stop()."""
-    os.close(self._saved_fd)
+    def close(self):
+        """Close any resources used by self not closed by stop()."""
+        os.close(self._saved_fd)
 
 
-class AugmentedCase(collections.namedtuple('AugmentedCase', [
-    'case', 'id'])):
-  """A test case with a guaranteed unique externally specified identifier.
+class AugmentedCase(collections.namedtuple('AugmentedCase', ['case', 'id'])):
+    """A test case with a guaranteed unique externally specified identifier.
 
   Attributes:
     case (unittest.TestCase): TestCase we're decorating with an additional
@@ -125,105 +124,107 @@ class AugmentedCase(collections.namedtuple('AugmentedCase', [
       purposes.
   """
 
-  def __new__(cls, case, id=None):
-    if id is None:
-      id = uuid.uuid4()
-    return super(cls, AugmentedCase).__new__(cls, case, id)
+    def __new__(cls, case, id=None):
+        if id is None:
+            id = uuid.uuid4()
+        return super(cls, AugmentedCase).__new__(cls, case, id)
 
 
 class Runner(object):
 
-  def run(self, suite):
-    """See setuptools' test_runner setup argument for information."""
-    # only run test cases with id starting with given prefix
-    testcase_filter = os.getenv('GRPC_PYTHON_TESTRUNNER_FILTER')
-    filtered_cases = []
-    for case in _loader.iterate_suite_cases(suite):
-      if not testcase_filter or case.id().startswith(testcase_filter):
-        filtered_cases.append(case)
-
-    # Ensure that every test case has no collision with any other test case in
-    # the augmented results.
-    augmented_cases = [AugmentedCase(case, uuid.uuid4())
-                       for case in filtered_cases]
-    case_id_by_case = dict((augmented_case.case, augmented_case.id)
-                           for augmented_case in augmented_cases)
-    result_out = moves.cStringIO()
-    result = _result.TerminalResult(
-        result_out, id_map=lambda case: case_id_by_case[case])
-    stdout_pipe = CaptureFile(sys.stdout.fileno())
-    stderr_pipe = CaptureFile(sys.stderr.fileno())
-    kill_flag = [False]
-
-    def sigint_handler(signal_number, frame):
-      if signal_number == signal.SIGINT:
-        kill_flag[0] = True  # Python 2.7 not having 'local'... :-(
-      signal.signal(signal_number, signal.SIG_DFL)
-
-    def fault_handler(signal_number, frame):
-      stdout_pipe.write_bypass(
-          'Received fault signal {}\nstdout:\n{}\n\nstderr:{}\n'
-          .format(signal_number, stdout_pipe.output(),
-                  stderr_pipe.output()))
-      os._exit(1)
-
-    def check_kill_self():
-      if kill_flag[0]:
-        stdout_pipe.write_bypass('Stopping tests short...')
-        result.stopTestRun()
-        stdout_pipe.write_bypass(result_out.getvalue())
-        stdout_pipe.write_bypass(
-            '\ninterrupted stdout:\n{}\n'.format(stdout_pipe.output().decode()))
-        stderr_pipe.write_bypass(
-            '\ninterrupted stderr:\n{}\n'.format(stderr_pipe.output().decode()))
-        os._exit(1)
-    def try_set_handler(name, handler):
-      try:
-        signal.signal(getattr(signal, name), handler)
-      except AttributeError:
-        pass
-    try_set_handler('SIGINT', sigint_handler)
-    try_set_handler('SIGSEGV', fault_handler)
-    try_set_handler('SIGBUS', fault_handler)
-    try_set_handler('SIGABRT', fault_handler)
-    try_set_handler('SIGFPE', fault_handler)
-    try_set_handler('SIGILL', fault_handler)
-    # Sometimes output will lag after a test has successfully finished; we
-    # ignore such writes to our pipes.
-    try_set_handler('SIGPIPE', signal.SIG_IGN)
-
-    # Run the tests
-    result.startTestRun()
-    for augmented_case in augmented_cases:
-      sys.stdout.write('Running       {}\n'.format(augmented_case.case.id()))
-      sys.stdout.flush()
-      case_thread = threading.Thread(
-          target=augmented_case.case.run, args=(result,))
-      try:
-        with stdout_pipe, stderr_pipe:
-          case_thread.start()
-          while case_thread.is_alive():
+    def run(self, suite):
+        """See setuptools' test_runner setup argument for information."""
+        # only run test cases with id starting with given prefix
+        testcase_filter = os.getenv('GRPC_PYTHON_TESTRUNNER_FILTER')
+        filtered_cases = []
+        for case in _loader.iterate_suite_cases(suite):
+            if not testcase_filter or case.id().startswith(testcase_filter):
+                filtered_cases.append(case)
+
+        # Ensure that every test case has no collision with any other test case in
+        # the augmented results.
+        augmented_cases = [
+            AugmentedCase(case, uuid.uuid4()) for case in filtered_cases
+        ]
+        case_id_by_case = dict((augmented_case.case, augmented_case.id)
+                               for augmented_case in augmented_cases)
+        result_out = moves.cStringIO()
+        result = _result.TerminalResult(
+            result_out, id_map=lambda case: case_id_by_case[case])
+        stdout_pipe = CaptureFile(sys.stdout.fileno())
+        stderr_pipe = CaptureFile(sys.stderr.fileno())
+        kill_flag = [False]
+
+        def sigint_handler(signal_number, frame):
+            if signal_number == signal.SIGINT:
+                kill_flag[0] = True  # Python 2.7 not having 'local'... :-(
+            signal.signal(signal_number, signal.SIG_DFL)
+
+        def fault_handler(signal_number, frame):
+            stdout_pipe.write_bypass(
+                'Received fault signal {}\nstdout:\n{}\n\nstderr:{}\n'.format(
+                    signal_number, stdout_pipe.output(), stderr_pipe.output()))
+            os._exit(1)
+
+        def check_kill_self():
+            if kill_flag[0]:
+                stdout_pipe.write_bypass('Stopping tests short...')
+                result.stopTestRun()
+                stdout_pipe.write_bypass(result_out.getvalue())
+                stdout_pipe.write_bypass('\ninterrupted stdout:\n{}\n'.format(
+                    stdout_pipe.output().decode()))
+                stderr_pipe.write_bypass('\ninterrupted stderr:\n{}\n'.format(
+                    stderr_pipe.output().decode()))
+                os._exit(1)
+
+        def try_set_handler(name, handler):
+            try:
+                signal.signal(getattr(signal, name), handler)
+            except AttributeError:
+                pass
+
+        try_set_handler('SIGINT', sigint_handler)
+        try_set_handler('SIGSEGV', fault_handler)
+        try_set_handler('SIGBUS', fault_handler)
+        try_set_handler('SIGABRT', fault_handler)
+        try_set_handler('SIGFPE', fault_handler)
+        try_set_handler('SIGILL', fault_handler)
+        # Sometimes output will lag after a test has successfully finished; we
+        # ignore such writes to our pipes.
+        try_set_handler('SIGPIPE', signal.SIG_IGN)
+
+        # Run the tests
+        result.startTestRun()
+        for augmented_case in augmented_cases:
+            sys.stdout.write('Running       {}\n'.format(augmented_case.case.id(
+            )))
+            sys.stdout.flush()
+            case_thread = threading.Thread(
+                target=augmented_case.case.run, args=(result,))
+            try:
+                with stdout_pipe, stderr_pipe:
+                    case_thread.start()
+                    while case_thread.is_alive():
+                        check_kill_self()
+                        time.sleep(0)
+                    case_thread.join()
+            except:
+                # re-raise the exception after forcing the with-block to end
+                raise
+            result.set_output(augmented_case.case,
+                              stdout_pipe.output(), stderr_pipe.output())
+            sys.stdout.write(result_out.getvalue())
+            sys.stdout.flush()
+            result_out.truncate(0)
             check_kill_self()
-            time.sleep(0)
-          case_thread.join()
-      except:
-        # re-raise the exception after forcing the with-block to end
-        raise
-      result.set_output(
-          augmented_case.case, stdout_pipe.output(), stderr_pipe.output())
-      sys.stdout.write(result_out.getvalue())
-      sys.stdout.flush()
-      result_out.truncate(0)
-      check_kill_self()
-    result.stopTestRun()
-    stdout_pipe.close()
-    stderr_pipe.close()
-
-    # Report results
-    sys.stdout.write(result_out.getvalue())
-    sys.stdout.flush()
-    signal.signal(signal.SIGINT, signal.SIG_DFL)
-    with open('report.xml', 'wb') as report_xml_file:
-      _result.jenkins_junit_xml(result).write(report_xml_file)
-    return result
-
+        result.stopTestRun()
+        stdout_pipe.close()
+        stderr_pipe.close()
+
+        # Report results
+        sys.stdout.write(result_out.getvalue())
+        sys.stdout.flush()
+        signal.signal(signal.SIGINT, signal.SIG_DFL)
+        with open('report.xml', 'wb') as report_xml_file:
+            _result.jenkins_junit_xml(result).write(report_xml_file)
+        return result
diff --git a/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py b/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py
index 5dde72b169874ce0dbac79c02457e6e5fa051ad9..363b4c5f994799a66afe9f27917299e36eb1ca1b 100644
--- a/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py
+++ b/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of grpc_health.v1.health."""
 
 import unittest
@@ -41,55 +40,55 @@ from tests.unit.framework.common import test_constants
 
 class HealthServicerTest(unittest.TestCase):
 
-  def setUp(self):
-    servicer = health.HealthServicer()
-    servicer.set('', health_pb2.HealthCheckResponse.SERVING)
-    servicer.set('grpc.test.TestServiceServing',
-                 health_pb2.HealthCheckResponse.SERVING)
-    servicer.set('grpc.test.TestServiceUnknown',
-                 health_pb2.HealthCheckResponse.UNKNOWN)
-    servicer.set('grpc.test.TestServiceNotServing',
-                 health_pb2.HealthCheckResponse.NOT_SERVING)
-    server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    self._server = grpc.server(server_pool)
-    port = self._server.add_insecure_port('[::]:0')
-    health_pb2.add_HealthServicer_to_server(servicer, self._server)
-    self._server.start()
+    def setUp(self):
+        servicer = health.HealthServicer()
+        servicer.set('', health_pb2.HealthCheckResponse.SERVING)
+        servicer.set('grpc.test.TestServiceServing',
+                     health_pb2.HealthCheckResponse.SERVING)
+        servicer.set('grpc.test.TestServiceUnknown',
+                     health_pb2.HealthCheckResponse.UNKNOWN)
+        servicer.set('grpc.test.TestServiceNotServing',
+                     health_pb2.HealthCheckResponse.NOT_SERVING)
+        server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        self._server = grpc.server(server_pool)
+        port = self._server.add_insecure_port('[::]:0')
+        health_pb2.add_HealthServicer_to_server(servicer, self._server)
+        self._server.start()
+
+        channel = grpc.insecure_channel('localhost:%d' % port)
+        self._stub = health_pb2.HealthStub(channel)
 
-    channel = grpc.insecure_channel('localhost:%d' % port)
-    self._stub = health_pb2.HealthStub(channel)
+    def test_empty_service(self):
+        request = health_pb2.HealthCheckRequest()
+        resp = self._stub.Check(request)
+        self.assertEqual(health_pb2.HealthCheckResponse.SERVING, resp.status)
 
-  def test_empty_service(self):
-    request = health_pb2.HealthCheckRequest()
-    resp = self._stub.Check(request)
-    self.assertEqual(health_pb2.HealthCheckResponse.SERVING, resp.status)
+    def test_serving_service(self):
+        request = health_pb2.HealthCheckRequest(
+            service='grpc.test.TestServiceServing')
+        resp = self._stub.Check(request)
+        self.assertEqual(health_pb2.HealthCheckResponse.SERVING, resp.status)
 
-  def test_serving_service(self):
-    request = health_pb2.HealthCheckRequest(
-        service='grpc.test.TestServiceServing')
-    resp = self._stub.Check(request)
-    self.assertEqual(health_pb2.HealthCheckResponse.SERVING, resp.status)
+    def test_unknown_serivce(self):
+        request = health_pb2.HealthCheckRequest(
+            service='grpc.test.TestServiceUnknown')
+        resp = self._stub.Check(request)
+        self.assertEqual(health_pb2.HealthCheckResponse.UNKNOWN, resp.status)
 
-  def test_unknown_serivce(self):
-    request = health_pb2.HealthCheckRequest(
-        service='grpc.test.TestServiceUnknown')
-    resp = self._stub.Check(request)
-    self.assertEqual(health_pb2.HealthCheckResponse.UNKNOWN, resp.status)
+    def test_not_serving_service(self):
+        request = health_pb2.HealthCheckRequest(
+            service='grpc.test.TestServiceNotServing')
+        resp = self._stub.Check(request)
+        self.assertEqual(health_pb2.HealthCheckResponse.NOT_SERVING,
+                         resp.status)
 
-  def test_not_serving_service(self):
-    request = health_pb2.HealthCheckRequest(
-        service='grpc.test.TestServiceNotServing')
-    resp = self._stub.Check(request)
-    self.assertEqual(health_pb2.HealthCheckResponse.NOT_SERVING, resp.status)
+    def test_not_found_service(self):
+        request = health_pb2.HealthCheckRequest(service='not-found')
+        with self.assertRaises(grpc.RpcError) as context:
+            resp = self._stub.Check(request)
 
-  def test_not_found_service(self):
-    request = health_pb2.HealthCheckRequest(
-        service='not-found')
-    with self.assertRaises(grpc.RpcError) as context:
-      resp = self._stub.Check(request)
-  
-    self.assertEqual(grpc.StatusCode.NOT_FOUND, context.exception.code())
+        self.assertEqual(grpc.StatusCode.NOT_FOUND, context.exception.code())
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/http2/_negative_http2_client.py b/src/python/grpcio_tests/tests/http2/_negative_http2_client.py
new file mode 100644
index 0000000000000000000000000000000000000000..c192d827c40c61be521994861fc299fae2d3d2c9
--- /dev/null
+++ b/src/python/grpcio_tests/tests/http2/_negative_http2_client.py
@@ -0,0 +1,172 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"""The Python client used to test negative http2 conditions."""
+
+import argparse
+
+import grpc
+from src.proto.grpc.testing import test_pb2
+from src.proto.grpc.testing import messages_pb2
+
+
+def _validate_payload_type_and_length(response, expected_type, expected_length):
+    if response.payload.type is not expected_type:
+        raise ValueError('expected payload type %s, got %s' %
+                         (expected_type, type(response.payload.type)))
+    elif len(response.payload.body) != expected_length:
+        raise ValueError('expected payload body size %d, got %d' %
+                         (expected_length, len(response.payload.body)))
+
+
+def _expect_status_code(call, expected_code):
+    if call.code() != expected_code:
+        raise ValueError('expected code %s, got %s' %
+                         (expected_code, call.code()))
+
+
+def _expect_status_details(call, expected_details):
+    if call.details() != expected_details:
+        raise ValueError('expected message %s, got %s' %
+                         (expected_details, call.details()))
+
+
+def _validate_status_code_and_details(call, expected_code, expected_details):
+    _expect_status_code(call, expected_code)
+    _expect_status_details(call, expected_details)
+
+
+# common requests
+_REQUEST_SIZE = 314159
+_RESPONSE_SIZE = 271828
+
+_SIMPLE_REQUEST = messages_pb2.SimpleRequest(
+    response_type=messages_pb2.COMPRESSABLE,
+    response_size=_RESPONSE_SIZE,
+    payload=messages_pb2.Payload(body=b'\x00' * _REQUEST_SIZE))
+
+
+def _goaway(stub):
+    first_response = stub.UnaryCall(_SIMPLE_REQUEST)
+    _validate_payload_type_and_length(first_response, messages_pb2.COMPRESSABLE,
+                                      _RESPONSE_SIZE)
+    second_response = stub.UnaryCall(_SIMPLE_REQUEST)
+    _validate_payload_type_and_length(second_response,
+                                      messages_pb2.COMPRESSABLE, _RESPONSE_SIZE)
+
+
+def _rst_after_header(stub):
+    resp_future = stub.UnaryCall.future(_SIMPLE_REQUEST)
+    _validate_status_code_and_details(resp_future, grpc.StatusCode.UNAVAILABLE,
+                                      "")
+
+
+def _rst_during_data(stub):
+    resp_future = stub.UnaryCall.future(_SIMPLE_REQUEST)
+    _validate_status_code_and_details(resp_future, grpc.StatusCode.UNKNOWN, "")
+
+
+def _rst_after_data(stub):
+    resp_future = stub.UnaryCall.future(_SIMPLE_REQUEST)
+    _validate_payload_type_and_length(
+        next(resp_future), messages_pb2.COMPRESSABLE, _RESPONSE_SIZE)
+    _validate_status_code_and_details(resp_future, grpc.StatusCode.UNKNOWN, "")
+
+
+def _ping(stub):
+    response = stub.UnaryCall(_SIMPLE_REQUEST)
+    _validate_payload_type_and_length(response, messages_pb2.COMPRESSABLE,
+                                      _RESPONSE_SIZE)
+
+
+def _max_streams(stub):
+    # send one req to ensure server sets MAX_STREAMS
+    response = stub.UnaryCall(_SIMPLE_REQUEST)
+    _validate_payload_type_and_length(response, messages_pb2.COMPRESSABLE,
+                                      _RESPONSE_SIZE)
+
+    # give the streams a workout
+    futures = []
+    for _ in range(15):
+        futures.append(stub.UnaryCall.future(_SIMPLE_REQUEST))
+    for future in futures:
+        _validate_payload_type_and_length(
+            future.result(), messages_pb2.COMPRESSABLE, _RESPONSE_SIZE)
+
+
+def _run_test_case(test_case, stub):
+    if test_case == 'goaway':
+        _goaway(stub)
+    elif test_case == 'rst_after_header':
+        _rst_after_header(stub)
+    elif test_case == 'rst_during_data':
+        _rst_during_data(stub)
+    elif test_case == 'rst_after_data':
+        _rst_after_data(stub)
+    elif test_case == 'ping':
+        _ping(stub)
+    elif test_case == 'max_streams':
+        _max_streams(stub)
+    else:
+        raise ValueError("Invalid test case: %s" % test_case)
+
+
+def _args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        '--server_host',
+        help='the host to which to connect',
+        type=str,
+        default="127.0.0.1")
+    parser.add_argument(
+        '--server_port',
+        help='the port to which to connect',
+        type=int,
+        default="8080")
+    parser.add_argument(
+        '--test_case',
+        help='the test case to execute',
+        type=str,
+        default="goaway")
+    return parser.parse_args()
+
+
+def _stub(server_host, server_port):
+    target = '{}:{}'.format(server_host, server_port)
+    channel = grpc.insecure_channel(target)
+    return test_pb2.TestServiceStub(channel)
+
+
+def main():
+    args = _args()
+    stub = _stub(args.server_host, args.server_port)
+    _run_test_case(args.test_case, stub)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/src/python/grpcio_tests/tests/interop/__init__.py b/src/python/grpcio_tests/tests/interop/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/interop/__init__.py
+++ b/src/python/grpcio_tests/tests/interop/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/interop/_insecure_interop_test.py b/src/python/grpcio_tests/tests/interop/_insecure_intraop_test.py
similarity index 74%
rename from src/python/grpcio_tests/tests/interop/_insecure_interop_test.py
rename to src/python/grpcio_tests/tests/interop/_insecure_intraop_test.py
index 936c895bd2e73549925e73e858864ba75627a45b..58f3b364bad336b05d449416b8510041fcf9e308 100644
--- a/src/python/grpcio_tests/tests/interop/_insecure_interop_test.py
+++ b/src/python/grpcio_tests/tests/interop/_insecure_intraop_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Insecure client-server interoperability as a unit test."""
 
 from concurrent import futures
@@ -35,24 +34,23 @@ import unittest
 import grpc
 from src.proto.grpc.testing import test_pb2
 
-from tests.interop import _interop_test_case
+from tests.interop import _intraop_test_case
 from tests.interop import methods
 from tests.interop import server
 
 
-class InsecureInteropTest(
-    _interop_test_case.InteropTestCase,
-    unittest.TestCase):
+class InsecureIntraopTest(_intraop_test_case.IntraopTestCase,
+                          unittest.TestCase):
 
-  def setUp(self):
-    self.server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-    test_pb2.add_TestServiceServicer_to_server(
-        methods.TestService(), self.server)
-    port = self.server.add_insecure_port('[::]:0')
-    self.server.start()
-    self.stub = test_pb2.TestServiceStub(
-        grpc.insecure_channel('localhost:{}'.format(port)))
+    def setUp(self):
+        self.server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
+        test_pb2.add_TestServiceServicer_to_server(methods.TestService(),
+                                                   self.server)
+        port = self.server.add_insecure_port('[::]:0')
+        self.server.start()
+        self.stub = test_pb2.TestServiceStub(
+            grpc.insecure_channel('localhost:{}'.format(port)))
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/interop/_interop_test_case.py b/src/python/grpcio_tests/tests/interop/_intraop_test_case.py
similarity index 62%
rename from src/python/grpcio_tests/tests/interop/_interop_test_case.py
rename to src/python/grpcio_tests/tests/interop/_intraop_test_case.py
index ccea17a66da0a35f3a5cdfe09a6a942793bb5461..424f93980cffece7ebd257456becd21bdcf3aaa1 100644
--- a/src/python/grpcio_tests/tests/interop/_interop_test_case.py
+++ b/src/python/grpcio_tests/tests/interop/_intraop_test_case.py
@@ -26,39 +26,41 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Common code for unit tests of the interoperability test code."""
 
 from tests.interop import methods
 
 
-class InteropTestCase(object):
-  """Unit test methods.
+class IntraopTestCase(object):
+    """Unit test methods.
 
   This class must be mixed in with unittest.TestCase and a class that defines
   setUp and tearDown methods that manage a stub attribute.
   """
 
-  def testEmptyUnary(self):
-    methods.TestCase.EMPTY_UNARY.test_interoperability(self.stub, None)
+    def testEmptyUnary(self):
+        methods.TestCase.EMPTY_UNARY.test_interoperability(self.stub, None)
 
-  def testLargeUnary(self):
-    methods.TestCase.LARGE_UNARY.test_interoperability(self.stub, None)
+    def testLargeUnary(self):
+        methods.TestCase.LARGE_UNARY.test_interoperability(self.stub, None)
 
-  def testServerStreaming(self):
-    methods.TestCase.SERVER_STREAMING.test_interoperability(self.stub, None)
+    def testServerStreaming(self):
+        methods.TestCase.SERVER_STREAMING.test_interoperability(self.stub, None)
 
-  def testClientStreaming(self):
-    methods.TestCase.CLIENT_STREAMING.test_interoperability(self.stub, None)
+    def testClientStreaming(self):
+        methods.TestCase.CLIENT_STREAMING.test_interoperability(self.stub, None)
 
-  def testPingPong(self):
-    methods.TestCase.PING_PONG.test_interoperability(self.stub, None)
+    def testPingPong(self):
+        methods.TestCase.PING_PONG.test_interoperability(self.stub, None)
 
-  def testCancelAfterBegin(self):
-    methods.TestCase.CANCEL_AFTER_BEGIN.test_interoperability(self.stub, None)
+    def testCancelAfterBegin(self):
+        methods.TestCase.CANCEL_AFTER_BEGIN.test_interoperability(self.stub,
+                                                                  None)
 
-  def testCancelAfterFirstResponse(self):
-    methods.TestCase.CANCEL_AFTER_FIRST_RESPONSE.test_interoperability(self.stub, None)
+    def testCancelAfterFirstResponse(self):
+        methods.TestCase.CANCEL_AFTER_FIRST_RESPONSE.test_interoperability(
+            self.stub, None)
 
-  def testTimeoutOnSleepingServer(self):
-    methods.TestCase.TIMEOUT_ON_SLEEPING_SERVER.test_interoperability(self.stub, None)
+    def testTimeoutOnSleepingServer(self):
+        methods.TestCase.TIMEOUT_ON_SLEEPING_SERVER.test_interoperability(
+            self.stub, None)
diff --git a/src/python/grpcio_tests/tests/interop/_secure_interop_test.py b/src/python/grpcio_tests/tests/interop/_secure_intraop_test.py
similarity index 65%
rename from src/python/grpcio_tests/tests/interop/_secure_interop_test.py
rename to src/python/grpcio_tests/tests/interop/_secure_intraop_test.py
index eaca553e1b8e74116de473c914a77b70b018951c..b28406ed3ff417c27d4510446b46befc09be08fd 100644
--- a/src/python/grpcio_tests/tests/interop/_secure_interop_test.py
+++ b/src/python/grpcio_tests/tests/interop/_secure_intraop_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Secure client-server interoperability as a unit test."""
 
 from concurrent import futures
@@ -35,31 +34,31 @@ import unittest
 import grpc
 from src.proto.grpc.testing import test_pb2
 
-from tests.interop import _interop_test_case
+from tests.interop import _intraop_test_case
 from tests.interop import methods
 from tests.interop import resources
 
 _SERVER_HOST_OVERRIDE = 'foo.test.google.fr'
 
 
-class SecureInteropTest(
-    _interop_test_case.InteropTestCase,
-    unittest.TestCase):
+class SecureIntraopTest(_intraop_test_case.IntraopTestCase, unittest.TestCase):
 
-  def setUp(self):
-    self.server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-    test_pb2.add_TestServiceServicer_to_server(
-        methods.TestService(), self.server)
-    port = self.server.add_secure_port(
-        '[::]:0', grpc.ssl_server_credentials(
-            [(resources.private_key(), resources.certificate_chain())]))
-    self.server.start()
-    self.stub = test_pb2.TestServiceStub(
-        grpc.secure_channel(
-            'localhost:{}'.format(port),
-            grpc.ssl_channel_credentials(resources.test_root_certificates()),
-            (('grpc.ssl_target_name_override', _SERVER_HOST_OVERRIDE,),)))
+    def setUp(self):
+        self.server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
+        test_pb2.add_TestServiceServicer_to_server(methods.TestService(),
+                                                   self.server)
+        port = self.server.add_secure_port(
+            '[::]:0',
+            grpc.ssl_server_credentials(
+                [(resources.private_key(), resources.certificate_chain())]))
+        self.server.start()
+        self.stub = test_pb2.TestServiceStub(
+            grpc.secure_channel('localhost:{}'.format(port),
+                                grpc.ssl_channel_credentials(
+                                    resources.test_root_certificates()), ((
+                                        'grpc.ssl_target_name_override',
+                                        _SERVER_HOST_OVERRIDE,),)))
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/interop/client.py b/src/python/grpcio_tests/tests/interop/client.py
index afaa4662541d7ba07653ba05e72e19f9cb002270..f177896e8e6aaf1bdbc48d2d8d3e985a2200e86c 100644
--- a/src/python/grpcio_tests/tests/interop/client.py
+++ b/src/python/grpcio_tests/tests/interop/client.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """The Python implementation of the GRPC interoperability test client."""
 
 import argparse
@@ -41,93 +40,107 @@ from tests.interop import resources
 
 
 def _args():
-  parser = argparse.ArgumentParser()
-  parser.add_argument(
-      '--server_host', help='the host to which to connect', type=str,
-      default="127.0.0.1")
-  parser.add_argument(
-      '--server_port', help='the port to which to connect', type=int)
-  parser.add_argument(
-      '--test_case', help='the test case to execute', type=str,
-      default="large_unary")
-  parser.add_argument(
-      '--use_tls', help='require a secure connection', default=False,
-      type=resources.parse_bool)
-  parser.add_argument(
-      '--use_test_ca', help='replace platform root CAs with ca.pem',
-      default=False, type=resources.parse_bool)
-  parser.add_argument(
-      '--server_host_override', default="foo.test.google.fr",
-      help='the server host to which to claim to connect', type=str)
-  parser.add_argument('--oauth_scope', help='scope for OAuth tokens', type=str)
-  parser.add_argument(
-      '--default_service_account',
-      help='email address of the default service account', type=str)
-  return parser.parse_args()
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        '--server_host',
+        help='the host to which to connect',
+        type=str,
+        default="127.0.0.1")
+    parser.add_argument(
+        '--server_port', help='the port to which to connect', type=int)
+    parser.add_argument(
+        '--test_case',
+        help='the test case to execute',
+        type=str,
+        default="large_unary")
+    parser.add_argument(
+        '--use_tls',
+        help='require a secure connection',
+        default=False,
+        type=resources.parse_bool)
+    parser.add_argument(
+        '--use_test_ca',
+        help='replace platform root CAs with ca.pem',
+        default=False,
+        type=resources.parse_bool)
+    parser.add_argument(
+        '--server_host_override',
+        default="foo.test.google.fr",
+        help='the server host to which to claim to connect',
+        type=str)
+    parser.add_argument(
+        '--oauth_scope', help='scope for OAuth tokens', type=str)
+    parser.add_argument(
+        '--default_service_account',
+        help='email address of the default service account',
+        type=str)
+    return parser.parse_args()
 
 
 def _application_default_credentials():
-  return oauth2client_client.GoogleCredentials.get_application_default()
+    return oauth2client_client.GoogleCredentials.get_application_default()
 
 
 def _stub(args):
-  target = '{}:{}'.format(args.server_host, args.server_port)
-  if args.test_case == 'oauth2_auth_token':
-    google_credentials = _application_default_credentials()
-    scoped_credentials = google_credentials.create_scoped([args.oauth_scope])
-    access_token = scoped_credentials.get_access_token().access_token
-    call_credentials = grpc.access_token_call_credentials(access_token)
-  elif args.test_case == 'compute_engine_creds':
-    google_credentials = _application_default_credentials()
-    scoped_credentials = google_credentials.create_scoped([args.oauth_scope])
-    # TODO(https://github.com/grpc/grpc/issues/6799): Eliminate this last
-    # remaining use of the Beta API.
-    call_credentials = implementations.google_call_credentials(
-        scoped_credentials)
-  elif args.test_case == 'jwt_token_creds':
-    google_credentials = _application_default_credentials()
-    # TODO(https://github.com/grpc/grpc/issues/6799): Eliminate this last
-    # remaining use of the Beta API.
-    call_credentials = implementations.google_call_credentials(
-        google_credentials)
-  else:
-    call_credentials = None
-  if args.use_tls:
-    if args.use_test_ca:
-      root_certificates = resources.test_root_certificates()
+    target = '{}:{}'.format(args.server_host, args.server_port)
+    if args.test_case == 'oauth2_auth_token':
+        google_credentials = _application_default_credentials()
+        scoped_credentials = google_credentials.create_scoped(
+            [args.oauth_scope])
+        access_token = scoped_credentials.get_access_token().access_token
+        call_credentials = grpc.access_token_call_credentials(access_token)
+    elif args.test_case == 'compute_engine_creds':
+        google_credentials = _application_default_credentials()
+        scoped_credentials = google_credentials.create_scoped(
+            [args.oauth_scope])
+        # TODO(https://github.com/grpc/grpc/issues/6799): Eliminate this last
+        # remaining use of the Beta API.
+        call_credentials = implementations.google_call_credentials(
+            scoped_credentials)
+    elif args.test_case == 'jwt_token_creds':
+        google_credentials = _application_default_credentials()
+        # TODO(https://github.com/grpc/grpc/issues/6799): Eliminate this last
+        # remaining use of the Beta API.
+        call_credentials = implementations.google_call_credentials(
+            google_credentials)
     else:
-      root_certificates = None  # will load default roots.
-
-    channel_credentials = grpc.ssl_channel_credentials(root_certificates)
-    if call_credentials is not None:
-      channel_credentials = grpc.composite_channel_credentials(
-          channel_credentials, call_credentials)
-
-    channel = grpc.secure_channel(
-        target, channel_credentials,
-        (('grpc.ssl_target_name_override', args.server_host_override,),))
-  else:
-    channel = grpc.insecure_channel(target)
-  if args.test_case == "unimplemented_service":
-    return test_pb2.UnimplementedServiceStub(channel)
-  else:
-    return test_pb2.TestServiceStub(channel)
+        call_credentials = None
+    if args.use_tls:
+        if args.use_test_ca:
+            root_certificates = resources.test_root_certificates()
+        else:
+            root_certificates = None  # will load default roots.
+
+        channel_credentials = grpc.ssl_channel_credentials(root_certificates)
+        if call_credentials is not None:
+            channel_credentials = grpc.composite_channel_credentials(
+                channel_credentials, call_credentials)
+
+        channel = grpc.secure_channel(target, channel_credentials, ((
+            'grpc.ssl_target_name_override',
+            args.server_host_override,),))
+    else:
+        channel = grpc.insecure_channel(target)
+    if args.test_case == "unimplemented_service":
+        return test_pb2.UnimplementedServiceStub(channel)
+    else:
+        return test_pb2.TestServiceStub(channel)
 
 
 def _test_case_from_arg(test_case_arg):
-  for test_case in methods.TestCase:
-    if test_case_arg == test_case.value:
-      return test_case
-  else:
-    raise ValueError('No test case "%s"!' % test_case_arg)
+    for test_case in methods.TestCase:
+        if test_case_arg == test_case.value:
+            return test_case
+    else:
+        raise ValueError('No test case "%s"!' % test_case_arg)
 
 
 def test_interoperability():
-  args = _args()
-  stub = _stub(args)
-  test_case = _test_case_from_arg(args.test_case)
-  test_case.test_interoperability(stub, args)
+    args = _args()
+    stub = _stub(args)
+    test_case = _test_case_from_arg(args.test_case)
+    test_case.test_interoperability(stub, args)
 
 
 if __name__ == '__main__':
-  test_interoperability()
+    test_interoperability()
diff --git a/src/python/grpcio_tests/tests/interop/methods.py b/src/python/grpcio_tests/tests/interop/methods.py
index 52e56f35022634a3ea2bf1d8b8f256e92514af2f..e1f8722168603b6296bc0cef7300056ba8e25978 100644
--- a/src/python/grpcio_tests/tests/interop/methods.py
+++ b/src/python/grpcio_tests/tests/interop/methods.py
@@ -26,14 +26,12 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Implementations of interoperability test methods."""
 
 import enum
 import json
 import os
 import threading
-import time
 
 from oauth2client import client as oauth2client_client
 
@@ -47,464 +45,483 @@ from src.proto.grpc.testing import test_pb2
 _INITIAL_METADATA_KEY = "x-grpc-test-echo-initial"
 _TRAILING_METADATA_KEY = "x-grpc-test-echo-trailing-bin"
 
+
 def _maybe_echo_metadata(servicer_context):
-  """Copies metadata from request to response if it is present."""
-  invocation_metadata = dict(servicer_context.invocation_metadata())
-  if _INITIAL_METADATA_KEY in invocation_metadata:
-    initial_metadatum = (
-        _INITIAL_METADATA_KEY, invocation_metadata[_INITIAL_METADATA_KEY])
-    servicer_context.send_initial_metadata((initial_metadatum,))
-  if _TRAILING_METADATA_KEY in invocation_metadata:
-    trailing_metadatum = (
-      _TRAILING_METADATA_KEY, invocation_metadata[_TRAILING_METADATA_KEY])
-    servicer_context.set_trailing_metadata((trailing_metadatum,))
+    """Copies metadata from request to response if it is present."""
+    invocation_metadata = dict(servicer_context.invocation_metadata())
+    if _INITIAL_METADATA_KEY in invocation_metadata:
+        initial_metadatum = (_INITIAL_METADATA_KEY,
+                             invocation_metadata[_INITIAL_METADATA_KEY])
+        servicer_context.send_initial_metadata((initial_metadatum,))
+    if _TRAILING_METADATA_KEY in invocation_metadata:
+        trailing_metadatum = (_TRAILING_METADATA_KEY,
+                              invocation_metadata[_TRAILING_METADATA_KEY])
+        servicer_context.set_trailing_metadata((trailing_metadatum,))
+
 
 def _maybe_echo_status_and_message(request, servicer_context):
-  """Sets the response context code and details if the request asks for them"""
-  if request.HasField('response_status'):
-    servicer_context.set_code(request.response_status.code)
-    servicer_context.set_details(request.response_status.message)
+    """Sets the response context code and details if the request asks for them"""
+    if request.HasField('response_status'):
+        servicer_context.set_code(request.response_status.code)
+        servicer_context.set_details(request.response_status.message)
+
 
 class TestService(test_pb2.TestServiceServicer):
 
-  def EmptyCall(self, request, context):
-    _maybe_echo_metadata(context)
-    return empty_pb2.Empty()
+    def EmptyCall(self, request, context):
+        _maybe_echo_metadata(context)
+        return empty_pb2.Empty()
 
-  def UnaryCall(self, request, context):
-    _maybe_echo_metadata(context)
-    _maybe_echo_status_and_message(request, context)
-    return messages_pb2.SimpleResponse(
-        payload=messages_pb2.Payload(
+    def UnaryCall(self, request, context):
+        _maybe_echo_metadata(context)
+        _maybe_echo_status_and_message(request, context)
+        return messages_pb2.SimpleResponse(payload=messages_pb2.Payload(
             type=messages_pb2.COMPRESSABLE,
             body=b'\x00' * request.response_size))
 
-  def StreamingOutputCall(self, request, context):
-    _maybe_echo_status_and_message(request, context)
-    for response_parameters in request.response_parameters:
-      yield messages_pb2.StreamingOutputCallResponse(
-          payload=messages_pb2.Payload(
-              type=request.response_type,
-              body=b'\x00' * response_parameters.size))
-
-  def StreamingInputCall(self, request_iterator, context):
-    aggregate_size = 0
-    for request in request_iterator:
-      if request.payload is not None and request.payload.body:
-        aggregate_size += len(request.payload.body)
-    return messages_pb2.StreamingInputCallResponse(
-        aggregated_payload_size=aggregate_size)
-
-  def FullDuplexCall(self, request_iterator, context):
-    _maybe_echo_metadata(context)
-    for request in request_iterator:
-      _maybe_echo_status_and_message(request, context)
-      for response_parameters in request.response_parameters:
-        yield messages_pb2.StreamingOutputCallResponse(
-            payload=messages_pb2.Payload(
-                type=request.payload.type,
-                body=b'\x00' * response_parameters.size))
-
-  # NOTE(nathaniel): Apparently this is the same as the full-duplex call?
-  # NOTE(atash): It isn't even called in the interop spec (Oct 22 2015)...
-  def HalfDuplexCall(self, request_iterator, context):
-    return self.FullDuplexCall(request_iterator, context)
+    def StreamingOutputCall(self, request, context):
+        _maybe_echo_status_and_message(request, context)
+        for response_parameters in request.response_parameters:
+            yield messages_pb2.StreamingOutputCallResponse(
+                payload=messages_pb2.Payload(
+                    type=request.response_type,
+                    body=b'\x00' * response_parameters.size))
+
+    def StreamingInputCall(self, request_iterator, context):
+        aggregate_size = 0
+        for request in request_iterator:
+            if request.payload is not None and request.payload.body:
+                aggregate_size += len(request.payload.body)
+        return messages_pb2.StreamingInputCallResponse(
+            aggregated_payload_size=aggregate_size)
+
+    def FullDuplexCall(self, request_iterator, context):
+        _maybe_echo_metadata(context)
+        for request in request_iterator:
+            _maybe_echo_status_and_message(request, context)
+            for response_parameters in request.response_parameters:
+                yield messages_pb2.StreamingOutputCallResponse(
+                    payload=messages_pb2.Payload(
+                        type=request.payload.type,
+                        body=b'\x00' * response_parameters.size))
+
+    # NOTE(nathaniel): Apparently this is the same as the full-duplex call?
+    # NOTE(atash): It isn't even called in the interop spec (Oct 22 2015)...
+    def HalfDuplexCall(self, request_iterator, context):
+        return self.FullDuplexCall(request_iterator, context)
 
 
 def _expect_status_code(call, expected_code):
-  if call.code() != expected_code:
-    raise ValueError(
-      'expected code %s, got %s' % (expected_code, call.code()))
+    if call.code() != expected_code:
+        raise ValueError('expected code %s, got %s' %
+                         (expected_code, call.code()))
 
 
 def _expect_status_details(call, expected_details):
-  if call.details() != expected_details:
-    raise ValueError(
-      'expected message %s, got %s' % (expected_details, call.details()))
+    if call.details() != expected_details:
+        raise ValueError('expected message %s, got %s' %
+                         (expected_details, call.details()))
 
 
 def _validate_status_code_and_details(call, expected_code, expected_details):
-  _expect_status_code(call, expected_code)
-  _expect_status_details(call, expected_details)
+    _expect_status_code(call, expected_code)
+    _expect_status_details(call, expected_details)
 
 
 def _validate_payload_type_and_length(response, expected_type, expected_length):
-  if response.payload.type is not expected_type:
-    raise ValueError(
-      'expected payload type %s, got %s' %
-          (expected_type, type(response.payload.type)))
-  elif len(response.payload.body) != expected_length:
-    raise ValueError(
-      'expected payload body size %d, got %d' %
-          (expected_length, len(response.payload.body)))
-
-
-def _large_unary_common_behavior(
-    stub, fill_username, fill_oauth_scope, call_credentials):
-  size = 314159
-  request = messages_pb2.SimpleRequest(
-      response_type=messages_pb2.COMPRESSABLE, response_size=size,
-      payload=messages_pb2.Payload(body=b'\x00' * 271828),
-      fill_username=fill_username, fill_oauth_scope=fill_oauth_scope)
-  response_future = stub.UnaryCall.future(
-      request, credentials=call_credentials)
-  response = response_future.result()
-  _validate_payload_type_and_length(response, messages_pb2.COMPRESSABLE, size)
-  return response
+    if response.payload.type is not expected_type:
+        raise ValueError('expected payload type %s, got %s' %
+                         (expected_type, type(response.payload.type)))
+    elif len(response.payload.body) != expected_length:
+        raise ValueError('expected payload body size %d, got %d' %
+                         (expected_length, len(response.payload.body)))
+
+
+def _large_unary_common_behavior(stub, fill_username, fill_oauth_scope,
+                                 call_credentials):
+    size = 314159
+    request = messages_pb2.SimpleRequest(
+        response_type=messages_pb2.COMPRESSABLE,
+        response_size=size,
+        payload=messages_pb2.Payload(body=b'\x00' * 271828),
+        fill_username=fill_username,
+        fill_oauth_scope=fill_oauth_scope)
+    response_future = stub.UnaryCall.future(
+        request, credentials=call_credentials)
+    response = response_future.result()
+    _validate_payload_type_and_length(response, messages_pb2.COMPRESSABLE, size)
+    return response
 
 
 def _empty_unary(stub):
-  response = stub.EmptyCall(empty_pb2.Empty())
-  if not isinstance(response, empty_pb2.Empty):
-    raise TypeError(
-        'response is of type "%s", not empty_pb2.Empty!', type(response))
+    response = stub.EmptyCall(empty_pb2.Empty())
+    if not isinstance(response, empty_pb2.Empty):
+        raise TypeError('response is of type "%s", not empty_pb2.Empty!',
+                        type(response))
 
 
 def _large_unary(stub):
-  _large_unary_common_behavior(stub, False, False, None)
+    _large_unary_common_behavior(stub, False, False, None)
 
 
 def _client_streaming(stub):
-  payload_body_sizes = (27182, 8, 1828, 45904,)
-  payloads = (
-      messages_pb2.Payload(body=b'\x00' * size)
-      for size in payload_body_sizes)
-  requests = (
-      messages_pb2.StreamingInputCallRequest(payload=payload)
-      for payload in payloads)
-  response = stub.StreamingInputCall(requests)
-  if response.aggregated_payload_size != 74922:
-    raise ValueError(
-        'incorrect size %d!' % response.aggregated_payload_size)
+    payload_body_sizes = (
+        27182,
+        8,
+        1828,
+        45904,)
+    payloads = (messages_pb2.Payload(body=b'\x00' * size)
+                for size in payload_body_sizes)
+    requests = (messages_pb2.StreamingInputCallRequest(payload=payload)
+                for payload in payloads)
+    response = stub.StreamingInputCall(requests)
+    if response.aggregated_payload_size != 74922:
+        raise ValueError('incorrect size %d!' %
+                         response.aggregated_payload_size)
 
 
 def _server_streaming(stub):
-  sizes = (31415, 9, 2653, 58979,)
-
-  request = messages_pb2.StreamingOutputCallRequest(
-      response_type=messages_pb2.COMPRESSABLE,
-      response_parameters=(
-          messages_pb2.ResponseParameters(size=sizes[0]),
-          messages_pb2.ResponseParameters(size=sizes[1]),
-          messages_pb2.ResponseParameters(size=sizes[2]),
-          messages_pb2.ResponseParameters(size=sizes[3]),
-      )
-  )
-  response_iterator = stub.StreamingOutputCall(request)
-  for index, response in enumerate(response_iterator):
-    _validate_payload_type_and_length(
-        response, messages_pb2.COMPRESSABLE, sizes[index])
-
+    sizes = (
+        31415,
+        9,
+        2653,
+        58979,)
 
-def _cancel_after_begin(stub):
-  sizes = (27182, 8, 1828, 45904,)
-  payloads = (messages_pb2.Payload(body=b'\x00' * size) for size in sizes)
-  requests = (messages_pb2.StreamingInputCallRequest(payload=payload)
-              for payload in payloads)
-  response_future = stub.StreamingInputCall.future(requests)
-  response_future.cancel()
-  if not response_future.cancelled():
-    raise ValueError('expected call to be cancelled')
+    request = messages_pb2.StreamingOutputCallRequest(
+        response_type=messages_pb2.COMPRESSABLE,
+        response_parameters=(
+            messages_pb2.ResponseParameters(size=sizes[0]),
+            messages_pb2.ResponseParameters(size=sizes[1]),
+            messages_pb2.ResponseParameters(size=sizes[2]),
+            messages_pb2.ResponseParameters(size=sizes[3]),))
+    response_iterator = stub.StreamingOutputCall(request)
+    for index, response in enumerate(response_iterator):
+        _validate_payload_type_and_length(response, messages_pb2.COMPRESSABLE,
+                                          sizes[index])
 
 
 class _Pipe(object):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._values = []
-    self._open = True
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._values = []
+        self._open = True
 
-  def __iter__(self):
-    return self
+    def __iter__(self):
+        return self
 
-  def __next__(self):
-    return self.next()
+    def __next__(self):
+        return self.next()
 
-  def next(self):
-    with self._condition:
-      while not self._values and self._open:
-        self._condition.wait()
-      if self._values:
-        return self._values.pop(0)
-      else:
-        raise StopIteration()
+    def next(self):
+        with self._condition:
+            while not self._values and self._open:
+                self._condition.wait()
+            if self._values:
+                return self._values.pop(0)
+            else:
+                raise StopIteration()
 
-  def add(self, value):
-    with self._condition:
-      self._values.append(value)
-      self._condition.notify()
+    def add(self, value):
+        with self._condition:
+            self._values.append(value)
+            self._condition.notify()
 
-  def close(self):
-    with self._condition:
-      self._open = False
-      self._condition.notify()
+    def close(self):
+        with self._condition:
+            self._open = False
+            self._condition.notify()
 
-  def __enter__(self):
-    return self
+    def __enter__(self):
+        return self
 
-  def __exit__(self, type, value, traceback):
-    self.close()
+    def __exit__(self, type, value, traceback):
+        self.close()
 
 
 def _ping_pong(stub):
-  request_response_sizes = (31415, 9, 2653, 58979,)
-  request_payload_sizes = (27182, 8, 1828, 45904,)
-
-  with _Pipe() as pipe:
-    response_iterator = stub.FullDuplexCall(pipe)
-    for response_size, payload_size in zip(
-        request_response_sizes, request_payload_sizes):
-      request = messages_pb2.StreamingOutputCallRequest(
-          response_type=messages_pb2.COMPRESSABLE,
-          response_parameters=(
-              messages_pb2.ResponseParameters(size=response_size),),
-          payload=messages_pb2.Payload(body=b'\x00' * payload_size))
-      pipe.add(request)
-      response = next(response_iterator)
-      _validate_payload_type_and_length(
-          response, messages_pb2.COMPRESSABLE, response_size)
+    request_response_sizes = (
+        31415,
+        9,
+        2653,
+        58979,)
+    request_payload_sizes = (
+        27182,
+        8,
+        1828,
+        45904,)
+
+    with _Pipe() as pipe:
+        response_iterator = stub.FullDuplexCall(pipe)
+        for response_size, payload_size in zip(request_response_sizes,
+                                               request_payload_sizes):
+            request = messages_pb2.StreamingOutputCallRequest(
+                response_type=messages_pb2.COMPRESSABLE,
+                response_parameters=(
+                    messages_pb2.ResponseParameters(size=response_size),),
+                payload=messages_pb2.Payload(body=b'\x00' * payload_size))
+            pipe.add(request)
+            response = next(response_iterator)
+            _validate_payload_type_and_length(
+                response, messages_pb2.COMPRESSABLE, response_size)
 
 
-def _cancel_after_first_response(stub):
-  request_response_sizes = (31415, 9, 2653, 58979,)
-  request_payload_sizes = (27182, 8, 1828, 45904,)
-  with _Pipe() as pipe:
-    response_iterator = stub.FullDuplexCall(pipe)
+def _cancel_after_begin(stub):
+    with _Pipe() as pipe:
+        response_future = stub.StreamingInputCall.future(pipe)
+        response_future.cancel()
+        if not response_future.cancelled():
+            raise ValueError('expected cancelled method to return True')
+        if response_future.code() is not grpc.StatusCode.CANCELLED:
+            raise ValueError('expected status code CANCELLED')
 
-    response_size = request_response_sizes[0]
-    payload_size = request_payload_sizes[0]
-    request = messages_pb2.StreamingOutputCallRequest(
-        response_type=messages_pb2.COMPRESSABLE,
-        response_parameters=(
-            messages_pb2.ResponseParameters(size=response_size),),
-        payload=messages_pb2.Payload(body=b'\x00' * payload_size))
-    pipe.add(request)
-    response = next(response_iterator)
-    # We test the contents of `response` in the Ping Pong test - don't check
-    # them here.
-    response_iterator.cancel()
-
-    try:
-      next(response_iterator)
-    except grpc.RpcError as rpc_error:
-      if rpc_error.code() is not grpc.StatusCode.CANCELLED:
-        raise
-    else:
-      raise ValueError('expected call to be cancelled')
 
+def _cancel_after_first_response(stub):
+    request_response_sizes = (
+        31415,
+        9,
+        2653,
+        58979,)
+    request_payload_sizes = (
+        27182,
+        8,
+        1828,
+        45904,)
+    with _Pipe() as pipe:
+        response_iterator = stub.FullDuplexCall(pipe)
+
+        response_size = request_response_sizes[0]
+        payload_size = request_payload_sizes[0]
+        request = messages_pb2.StreamingOutputCallRequest(
+            response_type=messages_pb2.COMPRESSABLE,
+            response_parameters=(
+                messages_pb2.ResponseParameters(size=response_size),),
+            payload=messages_pb2.Payload(body=b'\x00' * payload_size))
+        pipe.add(request)
+        response = next(response_iterator)
+        # We test the contents of `response` in the Ping Pong test - don't check
+        # them here.
+        response_iterator.cancel()
+
+        try:
+            next(response_iterator)
+        except grpc.RpcError as rpc_error:
+            if rpc_error.code() is not grpc.StatusCode.CANCELLED:
+                raise
+        else:
+            raise ValueError('expected call to be cancelled')
 
-def _timeout_on_sleeping_server(stub):
-  request_payload_size = 27182
-  with _Pipe() as pipe:
-    response_iterator = stub.FullDuplexCall(pipe, timeout=0.001)
 
-    request = messages_pb2.StreamingOutputCallRequest(
-        response_type=messages_pb2.COMPRESSABLE,
-        payload=messages_pb2.Payload(body=b'\x00' * request_payload_size))
-    pipe.add(request)
-    time.sleep(0.1)
-    try:
-      next(response_iterator)
-    except grpc.RpcError as rpc_error:
-      if rpc_error.code() is not grpc.StatusCode.DEADLINE_EXCEEDED:
-        raise
-    else:
-      raise ValueError('expected call to exceed deadline')
+def _timeout_on_sleeping_server(stub):
+    request_payload_size = 27182
+    with _Pipe() as pipe:
+        response_iterator = stub.FullDuplexCall(pipe, timeout=0.001)
+
+        request = messages_pb2.StreamingOutputCallRequest(
+            response_type=messages_pb2.COMPRESSABLE,
+            payload=messages_pb2.Payload(body=b'\x00' * request_payload_size))
+        pipe.add(request)
+        try:
+            next(response_iterator)
+        except grpc.RpcError as rpc_error:
+            if rpc_error.code() is not grpc.StatusCode.DEADLINE_EXCEEDED:
+                raise
+        else:
+            raise ValueError('expected call to exceed deadline')
 
 
 def _empty_stream(stub):
-  with _Pipe() as pipe:
-    response_iterator = stub.FullDuplexCall(pipe)
-    pipe.close()
-    try:
-      next(response_iterator)
-      raise ValueError('expected exactly 0 responses')
-    except StopIteration:
-      pass
+    with _Pipe() as pipe:
+        response_iterator = stub.FullDuplexCall(pipe)
+        pipe.close()
+        try:
+            next(response_iterator)
+            raise ValueError('expected exactly 0 responses')
+        except StopIteration:
+            pass
 
 
 def _status_code_and_message(stub):
-  details = 'test status message'
-  code = 2
-  status = grpc.StatusCode.UNKNOWN # code = 2
-
-  # Test with a UnaryCall
-  request = messages_pb2.SimpleRequest(
-      response_type=messages_pb2.COMPRESSABLE,
-      response_size=1,
-      payload=messages_pb2.Payload(body=b'\x00'),
-      response_status=messages_pb2.EchoStatus(code=code, message=details)
-  )
-  response_future = stub.UnaryCall.future(request)
-  _validate_status_code_and_details(response_future, status, details)
-
-  # Test with a FullDuplexCall
-  with _Pipe() as pipe:
-    response_iterator = stub.FullDuplexCall(pipe)
-    request = messages_pb2.StreamingOutputCallRequest(
+    details = 'test status message'
+    code = 2
+    status = grpc.StatusCode.UNKNOWN  # code = 2
+
+    # Test with a UnaryCall
+    request = messages_pb2.SimpleRequest(
         response_type=messages_pb2.COMPRESSABLE,
-        response_parameters=(
-            messages_pb2.ResponseParameters(size=1),),
+        response_size=1,
         payload=messages_pb2.Payload(body=b'\x00'),
-        response_status=messages_pb2.EchoStatus(code=code, message=details))
-    pipe.add(request)   # sends the initial request.
-  # Dropping out of with block closes the pipe
-  _validate_status_code_and_details(response_iterator, status, details)
+        response_status=messages_pb2.EchoStatus(
+            code=code, message=details))
+    response_future = stub.UnaryCall.future(request)
+    _validate_status_code_and_details(response_future, status, details)
+
+    # Test with a FullDuplexCall
+    with _Pipe() as pipe:
+        response_iterator = stub.FullDuplexCall(pipe)
+        request = messages_pb2.StreamingOutputCallRequest(
+            response_type=messages_pb2.COMPRESSABLE,
+            response_parameters=(messages_pb2.ResponseParameters(size=1),),
+            payload=messages_pb2.Payload(body=b'\x00'),
+            response_status=messages_pb2.EchoStatus(
+                code=code, message=details))
+        pipe.add(request)  # sends the initial request.
+    # Dropping out of with block closes the pipe
+    _validate_status_code_and_details(response_iterator, status, details)
 
 
 def _unimplemented_method(test_service_stub):
-  response_future = (
-      test_service_stub.UnimplementedCall.future(empty_pb2.Empty()))
-  _expect_status_code(response_future, grpc.StatusCode.UNIMPLEMENTED)
+    response_future = (
+        test_service_stub.UnimplementedCall.future(empty_pb2.Empty()))
+    _expect_status_code(response_future, grpc.StatusCode.UNIMPLEMENTED)
 
 
 def _unimplemented_service(unimplemented_service_stub):
-  response_future = (
-      unimplemented_service_stub.UnimplementedCall.future(empty_pb2.Empty()))
-  _expect_status_code(response_future, grpc.StatusCode.UNIMPLEMENTED)
+    response_future = (
+        unimplemented_service_stub.UnimplementedCall.future(empty_pb2.Empty()))
+    _expect_status_code(response_future, grpc.StatusCode.UNIMPLEMENTED)
 
 
 def _custom_metadata(stub):
-  initial_metadata_value = "test_initial_metadata_value"
-  trailing_metadata_value = "\x0a\x0b\x0a\x0b\x0a\x0b"
-  metadata = (
-      (_INITIAL_METADATA_KEY, initial_metadata_value),
-      (_TRAILING_METADATA_KEY, trailing_metadata_value))
-
-  def _validate_metadata(response):
-    initial_metadata = dict(response.initial_metadata())
-    if initial_metadata[_INITIAL_METADATA_KEY] != initial_metadata_value:
-      raise ValueError(
-        'expected initial metadata %s, got %s' % (
-            initial_metadata_value, initial_metadata[_INITIAL_METADATA_KEY]))
-    trailing_metadata = dict(response.trailing_metadata())
-    if trailing_metadata[_TRAILING_METADATA_KEY] != trailing_metadata_value:
-      raise ValueError(
-        'expected trailing metadata %s, got %s' % (
-            trailing_metadata_value, initial_metadata[_TRAILING_METADATA_KEY]))
-
-  # Testing with UnaryCall
-  request = messages_pb2.SimpleRequest(
-      response_type=messages_pb2.COMPRESSABLE,
-      response_size=1,
-      payload=messages_pb2.Payload(body=b'\x00'))
-  response_future = stub.UnaryCall.future(request, metadata=metadata)
-  _validate_metadata(response_future)
-
-  # Testing with FullDuplexCall
-  with _Pipe() as pipe:
-    response_iterator = stub.FullDuplexCall(pipe, metadata=metadata)
-    request = messages_pb2.StreamingOutputCallRequest(
+    initial_metadata_value = "test_initial_metadata_value"
+    trailing_metadata_value = "\x0a\x0b\x0a\x0b\x0a\x0b"
+    metadata = ((_INITIAL_METADATA_KEY, initial_metadata_value),
+                (_TRAILING_METADATA_KEY, trailing_metadata_value))
+
+    def _validate_metadata(response):
+        initial_metadata = dict(response.initial_metadata())
+        if initial_metadata[_INITIAL_METADATA_KEY] != initial_metadata_value:
+            raise ValueError('expected initial metadata %s, got %s' %
+                             (initial_metadata_value,
+                              initial_metadata[_INITIAL_METADATA_KEY]))
+        trailing_metadata = dict(response.trailing_metadata())
+        if trailing_metadata[_TRAILING_METADATA_KEY] != trailing_metadata_value:
+            raise ValueError('expected trailing metadata %s, got %s' %
+                             (trailing_metadata_value,
+                              initial_metadata[_TRAILING_METADATA_KEY]))
+
+    # Testing with UnaryCall
+    request = messages_pb2.SimpleRequest(
         response_type=messages_pb2.COMPRESSABLE,
-        response_parameters=(
-            messages_pb2.ResponseParameters(size=1),))
-    pipe.add(request)   # Sends the request
-    next(response_iterator)    # Causes server to send trailing metadata
-  # Dropping out of the with block closes the pipe
-  _validate_metadata(response_iterator)
+        response_size=1,
+        payload=messages_pb2.Payload(body=b'\x00'))
+    response_future = stub.UnaryCall.future(request, metadata=metadata)
+    _validate_metadata(response_future)
+
+    # Testing with FullDuplexCall
+    with _Pipe() as pipe:
+        response_iterator = stub.FullDuplexCall(pipe, metadata=metadata)
+        request = messages_pb2.StreamingOutputCallRequest(
+            response_type=messages_pb2.COMPRESSABLE,
+            response_parameters=(messages_pb2.ResponseParameters(size=1),))
+        pipe.add(request)  # Sends the request
+        next(response_iterator)  # Causes server to send trailing metadata
+    # Dropping out of the with block closes the pipe
+    _validate_metadata(response_iterator)
+
 
 def _compute_engine_creds(stub, args):
-  response = _large_unary_common_behavior(stub, True, True, None)
-  if args.default_service_account != response.username:
-    raise ValueError(
-        'expected username %s, got %s' % (
-            args.default_service_account, response.username))
+    response = _large_unary_common_behavior(stub, True, True, None)
+    if args.default_service_account != response.username:
+        raise ValueError('expected username %s, got %s' %
+                         (args.default_service_account, response.username))
 
 
 def _oauth2_auth_token(stub, args):
-  json_key_filename = os.environ[
-      oauth2client_client.GOOGLE_APPLICATION_CREDENTIALS]
-  wanted_email = json.load(open(json_key_filename, 'rb'))['client_email']
-  response = _large_unary_common_behavior(stub, True, True, None)
-  if wanted_email != response.username:
-    raise ValueError(
-        'expected username %s, got %s' % (wanted_email, response.username))
-  if args.oauth_scope.find(response.oauth_scope) == -1:
-    raise ValueError(
-        'expected to find oauth scope "{}" in received "{}"'.format(
-            response.oauth_scope, args.oauth_scope))
+    json_key_filename = os.environ[
+        oauth2client_client.GOOGLE_APPLICATION_CREDENTIALS]
+    wanted_email = json.load(open(json_key_filename, 'rb'))['client_email']
+    response = _large_unary_common_behavior(stub, True, True, None)
+    if wanted_email != response.username:
+        raise ValueError('expected username %s, got %s' %
+                         (wanted_email, response.username))
+    if args.oauth_scope.find(response.oauth_scope) == -1:
+        raise ValueError('expected to find oauth scope "{}" in received "{}"'.
+                         format(response.oauth_scope, args.oauth_scope))
 
 
 def _jwt_token_creds(stub, args):
-  json_key_filename = os.environ[
-      oauth2client_client.GOOGLE_APPLICATION_CREDENTIALS]
-  wanted_email = json.load(open(json_key_filename, 'rb'))['client_email']
-  response = _large_unary_common_behavior(stub, True, False, None)
-  if wanted_email != response.username:
-    raise ValueError(
-        'expected username %s, got %s' % (wanted_email, response.username))
+    json_key_filename = os.environ[
+        oauth2client_client.GOOGLE_APPLICATION_CREDENTIALS]
+    wanted_email = json.load(open(json_key_filename, 'rb'))['client_email']
+    response = _large_unary_common_behavior(stub, True, False, None)
+    if wanted_email != response.username:
+        raise ValueError('expected username %s, got %s' %
+                         (wanted_email, response.username))
 
 
 def _per_rpc_creds(stub, args):
-  json_key_filename = os.environ[
-      oauth2client_client.GOOGLE_APPLICATION_CREDENTIALS]
-  wanted_email = json.load(open(json_key_filename, 'rb'))['client_email']
-  credentials = oauth2client_client.GoogleCredentials.get_application_default()
-  scoped_credentials = credentials.create_scoped([args.oauth_scope])
-  # TODO(https://github.com/grpc/grpc/issues/6799): Eliminate this last
-  # remaining use of the Beta API.
-  call_credentials = implementations.google_call_credentials(
-      scoped_credentials)
-  response = _large_unary_common_behavior(stub, True, False, call_credentials)
-  if wanted_email != response.username:
-    raise ValueError(
-        'expected username %s, got %s' % (wanted_email, response.username))
+    json_key_filename = os.environ[
+        oauth2client_client.GOOGLE_APPLICATION_CREDENTIALS]
+    wanted_email = json.load(open(json_key_filename, 'rb'))['client_email']
+    credentials = oauth2client_client.GoogleCredentials.get_application_default(
+    )
+    scoped_credentials = credentials.create_scoped([args.oauth_scope])
+    # TODO(https://github.com/grpc/grpc/issues/6799): Eliminate this last
+    # remaining use of the Beta API.
+    call_credentials = implementations.google_call_credentials(
+        scoped_credentials)
+    response = _large_unary_common_behavior(stub, True, False, call_credentials)
+    if wanted_email != response.username:
+        raise ValueError('expected username %s, got %s' %
+                         (wanted_email, response.username))
 
 
 @enum.unique
 class TestCase(enum.Enum):
-  EMPTY_UNARY = 'empty_unary'
-  LARGE_UNARY = 'large_unary'
-  SERVER_STREAMING = 'server_streaming'
-  CLIENT_STREAMING = 'client_streaming'
-  PING_PONG = 'ping_pong'
-  CANCEL_AFTER_BEGIN = 'cancel_after_begin'
-  CANCEL_AFTER_FIRST_RESPONSE = 'cancel_after_first_response'
-  EMPTY_STREAM = 'empty_stream'
-  STATUS_CODE_AND_MESSAGE = 'status_code_and_message'
-  UNIMPLEMENTED_METHOD = 'unimplemented_method'
-  UNIMPLEMENTED_SERVICE = 'unimplemented_service'
-  CUSTOM_METADATA = "custom_metadata"
-  COMPUTE_ENGINE_CREDS = 'compute_engine_creds'
-  OAUTH2_AUTH_TOKEN = 'oauth2_auth_token'
-  JWT_TOKEN_CREDS = 'jwt_token_creds'
-  PER_RPC_CREDS = 'per_rpc_creds'
-  TIMEOUT_ON_SLEEPING_SERVER = 'timeout_on_sleeping_server'
-
-  def test_interoperability(self, stub, args):
-    if self is TestCase.EMPTY_UNARY:
-      _empty_unary(stub)
-    elif self is TestCase.LARGE_UNARY:
-      _large_unary(stub)
-    elif self is TestCase.SERVER_STREAMING:
-      _server_streaming(stub)
-    elif self is TestCase.CLIENT_STREAMING:
-      _client_streaming(stub)
-    elif self is TestCase.PING_PONG:
-      _ping_pong(stub)
-    elif self is TestCase.CANCEL_AFTER_BEGIN:
-      _cancel_after_begin(stub)
-    elif self is TestCase.CANCEL_AFTER_FIRST_RESPONSE:
-      _cancel_after_first_response(stub)
-    elif self is TestCase.TIMEOUT_ON_SLEEPING_SERVER:
-      _timeout_on_sleeping_server(stub)
-    elif self is TestCase.EMPTY_STREAM:
-      _empty_stream(stub)
-    elif self is TestCase.STATUS_CODE_AND_MESSAGE:
-      _status_code_and_message(stub)
-    elif self is TestCase.UNIMPLEMENTED_METHOD:
-      _unimplemented_method(stub)
-    elif self is TestCase.UNIMPLEMENTED_SERVICE:
-      _unimplemented_service(stub)
-    elif self is TestCase.CUSTOM_METADATA:
-      _custom_metadata(stub)
-    elif self is TestCase.COMPUTE_ENGINE_CREDS:
-      _compute_engine_creds(stub, args)
-    elif self is TestCase.OAUTH2_AUTH_TOKEN:
-      _oauth2_auth_token(stub, args)
-    elif self is TestCase.JWT_TOKEN_CREDS:
-      _jwt_token_creds(stub, args)
-    elif self is TestCase.PER_RPC_CREDS:
-      _per_rpc_creds(stub, args)
-    else:
-      raise NotImplementedError('Test case "%s" not implemented!' % self.name)
+    EMPTY_UNARY = 'empty_unary'
+    LARGE_UNARY = 'large_unary'
+    SERVER_STREAMING = 'server_streaming'
+    CLIENT_STREAMING = 'client_streaming'
+    PING_PONG = 'ping_pong'
+    CANCEL_AFTER_BEGIN = 'cancel_after_begin'
+    CANCEL_AFTER_FIRST_RESPONSE = 'cancel_after_first_response'
+    EMPTY_STREAM = 'empty_stream'
+    STATUS_CODE_AND_MESSAGE = 'status_code_and_message'
+    UNIMPLEMENTED_METHOD = 'unimplemented_method'
+    UNIMPLEMENTED_SERVICE = 'unimplemented_service'
+    CUSTOM_METADATA = "custom_metadata"
+    COMPUTE_ENGINE_CREDS = 'compute_engine_creds'
+    OAUTH2_AUTH_TOKEN = 'oauth2_auth_token'
+    JWT_TOKEN_CREDS = 'jwt_token_creds'
+    PER_RPC_CREDS = 'per_rpc_creds'
+    TIMEOUT_ON_SLEEPING_SERVER = 'timeout_on_sleeping_server'
+
+    def test_interoperability(self, stub, args):
+        if self is TestCase.EMPTY_UNARY:
+            _empty_unary(stub)
+        elif self is TestCase.LARGE_UNARY:
+            _large_unary(stub)
+        elif self is TestCase.SERVER_STREAMING:
+            _server_streaming(stub)
+        elif self is TestCase.CLIENT_STREAMING:
+            _client_streaming(stub)
+        elif self is TestCase.PING_PONG:
+            _ping_pong(stub)
+        elif self is TestCase.CANCEL_AFTER_BEGIN:
+            _cancel_after_begin(stub)
+        elif self is TestCase.CANCEL_AFTER_FIRST_RESPONSE:
+            _cancel_after_first_response(stub)
+        elif self is TestCase.TIMEOUT_ON_SLEEPING_SERVER:
+            _timeout_on_sleeping_server(stub)
+        elif self is TestCase.EMPTY_STREAM:
+            _empty_stream(stub)
+        elif self is TestCase.STATUS_CODE_AND_MESSAGE:
+            _status_code_and_message(stub)
+        elif self is TestCase.UNIMPLEMENTED_METHOD:
+            _unimplemented_method(stub)
+        elif self is TestCase.UNIMPLEMENTED_SERVICE:
+            _unimplemented_service(stub)
+        elif self is TestCase.CUSTOM_METADATA:
+            _custom_metadata(stub)
+        elif self is TestCase.COMPUTE_ENGINE_CREDS:
+            _compute_engine_creds(stub, args)
+        elif self is TestCase.OAUTH2_AUTH_TOKEN:
+            _oauth2_auth_token(stub, args)
+        elif self is TestCase.JWT_TOKEN_CREDS:
+            _jwt_token_creds(stub, args)
+        elif self is TestCase.PER_RPC_CREDS:
+            _per_rpc_creds(stub, args)
+        else:
+            raise NotImplementedError('Test case "%s" not implemented!' %
+                                      self.name)
diff --git a/src/python/grpcio_tests/tests/interop/resources.py b/src/python/grpcio_tests/tests/interop/resources.py
index c424385cf602d1403705ff0cb8e0d7ed5a197fdf..2ec2eb92b4f35a734d0809a9211880bb4a389c09 100644
--- a/src/python/grpcio_tests/tests/interop/resources.py
+++ b/src/python/grpcio_tests/tests/interop/resources.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Constants and functions for data used in interoperability testing."""
 
 import argparse
@@ -40,22 +39,22 @@ _CERTIFICATE_CHAIN_RESOURCE_PATH = 'credentials/server1.pem'
 
 
 def test_root_certificates():
-  return pkg_resources.resource_string(
-      __name__, _ROOT_CERTIFICATES_RESOURCE_PATH)
+    return pkg_resources.resource_string(__name__,
+                                         _ROOT_CERTIFICATES_RESOURCE_PATH)
 
 
 def private_key():
-  return pkg_resources.resource_string(__name__, _PRIVATE_KEY_RESOURCE_PATH)
+    return pkg_resources.resource_string(__name__, _PRIVATE_KEY_RESOURCE_PATH)
 
 
 def certificate_chain():
-  return pkg_resources.resource_string(
-      __name__, _CERTIFICATE_CHAIN_RESOURCE_PATH)
+    return pkg_resources.resource_string(__name__,
+                                         _CERTIFICATE_CHAIN_RESOURCE_PATH)
 
 
 def parse_bool(value):
-  if value == 'true':
-    return True
-  if value == 'false':
-    return False
-  raise argparse.ArgumentTypeError('Only true/false allowed')
+    if value == 'true':
+        return True
+    if value == 'false':
+        return False
+    raise argparse.ArgumentTypeError('Only true/false allowed')
diff --git a/src/python/grpcio_tests/tests/interop/server.py b/src/python/grpcio_tests/tests/interop/server.py
index 1ae83bc57d07630973b2e82aa3f5aa8d05e96a2f..65f1604eb8239c47642d08a3c3044064a816e250 100644
--- a/src/python/grpcio_tests/tests/interop/server.py
+++ b/src/python/grpcio_tests/tests/interop/server.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """The Python implementation of the GRPC interoperability test server."""
 
 import argparse
@@ -44,34 +43,36 @@ _ONE_DAY_IN_SECONDS = 60 * 60 * 24
 
 
 def serve():
-  parser = argparse.ArgumentParser()
-  parser.add_argument(
-      '--port', help='the port on which to serve', type=int)
-  parser.add_argument(
-      '--use_tls', help='require a secure connection',
-      default=False, type=resources.parse_bool)
-  args = parser.parse_args()
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--port', help='the port on which to serve', type=int)
+    parser.add_argument(
+        '--use_tls',
+        help='require a secure connection',
+        default=False,
+        type=resources.parse_bool)
+    args = parser.parse_args()
+
+    server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
+    test_pb2.add_TestServiceServicer_to_server(methods.TestService(), server)
+    if args.use_tls:
+        private_key = resources.private_key()
+        certificate_chain = resources.certificate_chain()
+        credentials = grpc.ssl_server_credentials((
+            (private_key, certificate_chain),))
+        server.add_secure_port('[::]:{}'.format(args.port), credentials)
+    else:
+        server.add_insecure_port('[::]:{}'.format(args.port))
 
-  server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-  test_pb2.add_TestServiceServicer_to_server(methods.TestService(), server)
-  if args.use_tls:
-    private_key = resources.private_key()
-    certificate_chain = resources.certificate_chain()
-    credentials = grpc.ssl_server_credentials(
-        ((private_key, certificate_chain),))
-    server.add_secure_port('[::]:{}'.format(args.port), credentials)
-  else:
-    server.add_insecure_port('[::]:{}'.format(args.port))
+    server.start()
+    logging.info('Server serving.')
+    try:
+        while True:
+            time.sleep(_ONE_DAY_IN_SECONDS)
+    except BaseException as e:
+        logging.info('Caught exception "%s"; stopping server...', e)
+        server.stop(None)
+        logging.info('Server stopped; exiting.')
 
-  server.start()
-  logging.info('Server serving.')
-  try:
-    while True:
-      time.sleep(_ONE_DAY_IN_SECONDS)
-  except BaseException as e:
-    logging.info('Caught exception "%s"; stopping server...', e)
-    server.stop(None)
-    logging.info('Server stopped; exiting.')
 
 if __name__ == '__main__':
-  serve()
+    serve()
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py b/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
index 7ca2bcff38328a42c44dedad60daa385ce2e0e3d..ae5da2c3dbe8296430d634300aadb96e866fc2c3 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
@@ -58,436 +58,440 @@ ADD_SERVICER_TO_SERVER_IDENTIFIER = 'add_TestServiceServicer_to_server'
 
 class _ServicerMethods(object):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._paused = False
-    self._fail = False
-
-  @contextlib.contextmanager
-  def pause(self):  # pylint: disable=invalid-name
-    with self._condition:
-      self._paused = True
-    yield
-    with self._condition:
-      self._paused = False
-      self._condition.notify_all()
-
-  @contextlib.contextmanager
-  def fail(self):  # pylint: disable=invalid-name
-    with self._condition:
-      self._fail = True
-    yield
-    with self._condition:
-      self._fail = False
-
-  def _control(self):  # pylint: disable=invalid-name
-    with self._condition:
-      if self._fail:
-        raise ValueError()
-      while self._paused:
-        self._condition.wait()
-
-  def UnaryCall(self, request, unused_rpc_context):
-    response = response_pb2.SimpleResponse()
-    response.payload.payload_type = payload_pb2.COMPRESSABLE
-    response.payload.payload_compressable = 'a' * request.response_size
-    self._control()
-    return response
-
-  def StreamingOutputCall(self, request, unused_rpc_context):
-    for parameter in request.response_parameters:
-      response = response_pb2.StreamingOutputCallResponse()
-      response.payload.payload_type = payload_pb2.COMPRESSABLE
-      response.payload.payload_compressable = 'a' * parameter.size
-      self._control()
-      yield response
-
-  def StreamingInputCall(self, request_iter, unused_rpc_context):
-    response = response_pb2.StreamingInputCallResponse()
-    aggregated_payload_size = 0
-    for request in request_iter:
-      aggregated_payload_size += len(request.payload.payload_compressable)
-    response.aggregated_payload_size = aggregated_payload_size
-    self._control()
-    return response
-
-  def FullDuplexCall(self, request_iter, unused_rpc_context):
-    for request in request_iter:
-      for parameter in request.response_parameters:
-        response = response_pb2.StreamingOutputCallResponse()
-        response.payload.payload_type = payload_pb2.COMPRESSABLE
-        response.payload.payload_compressable = 'a' * parameter.size
-        self._control()
-        yield response
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._paused = False
+        self._fail = False
+
+    @contextlib.contextmanager
+    def pause(self):  # pylint: disable=invalid-name
+        with self._condition:
+            self._paused = True
+        yield
+        with self._condition:
+            self._paused = False
+            self._condition.notify_all()
 
-  def HalfDuplexCall(self, request_iter, unused_rpc_context):
-    responses = []
-    for request in request_iter:
-      for parameter in request.response_parameters:
-        response = response_pb2.StreamingOutputCallResponse()
+    @contextlib.contextmanager
+    def fail(self):  # pylint: disable=invalid-name
+        with self._condition:
+            self._fail = True
+        yield
+        with self._condition:
+            self._fail = False
+
+    def _control(self):  # pylint: disable=invalid-name
+        with self._condition:
+            if self._fail:
+                raise ValueError()
+            while self._paused:
+                self._condition.wait()
+
+    def UnaryCall(self, request, unused_rpc_context):
+        response = response_pb2.SimpleResponse()
         response.payload.payload_type = payload_pb2.COMPRESSABLE
-        response.payload.payload_compressable = 'a' * parameter.size
+        response.payload.payload_compressable = 'a' * request.response_size
+        self._control()
+        return response
+
+    def StreamingOutputCall(self, request, unused_rpc_context):
+        for parameter in request.response_parameters:
+            response = response_pb2.StreamingOutputCallResponse()
+            response.payload.payload_type = payload_pb2.COMPRESSABLE
+            response.payload.payload_compressable = 'a' * parameter.size
+            self._control()
+            yield response
+
+    def StreamingInputCall(self, request_iter, unused_rpc_context):
+        response = response_pb2.StreamingInputCallResponse()
+        aggregated_payload_size = 0
+        for request in request_iter:
+            aggregated_payload_size += len(request.payload.payload_compressable)
+        response.aggregated_payload_size = aggregated_payload_size
         self._control()
-        responses.append(response)
-    for response in responses:
-      yield response
+        return response
+
+    def FullDuplexCall(self, request_iter, unused_rpc_context):
+        for request in request_iter:
+            for parameter in request.response_parameters:
+                response = response_pb2.StreamingOutputCallResponse()
+                response.payload.payload_type = payload_pb2.COMPRESSABLE
+                response.payload.payload_compressable = 'a' * parameter.size
+                self._control()
+                yield response
+
+    def HalfDuplexCall(self, request_iter, unused_rpc_context):
+        responses = []
+        for request in request_iter:
+            for parameter in request.response_parameters:
+                response = response_pb2.StreamingOutputCallResponse()
+                response.payload.payload_type = payload_pb2.COMPRESSABLE
+                response.payload.payload_compressable = 'a' * parameter.size
+                self._control()
+                responses.append(response)
+        for response in responses:
+            yield response
 
 
 class _Service(
-    collections.namedtuple(
-      '_Service', ('servicer_methods', 'server', 'stub',))):
-  """A live and running service.
+        collections.namedtuple('_Service', (
+            'servicer_methods',
+            'server',
+            'stub',))):
+    """A live and running service.
 
   Attributes:
     servicer_methods: The _ServicerMethods servicing RPCs.
     server: The grpc.Server servicing RPCs.
     stub: A stub on which to invoke RPCs.
   """
-      
+
 
 def _CreateService():
-  """Provides a servicer backend and a stub.
+    """Provides a servicer backend and a stub.
 
   Returns:
     A _Service with which to test RPCs.
   """
-  servicer_methods = _ServicerMethods()
+    servicer_methods = _ServicerMethods()
 
-  class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
+    class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
 
-    def UnaryCall(self, request, context):
-      return servicer_methods.UnaryCall(request, context)
+        def UnaryCall(self, request, context):
+            return servicer_methods.UnaryCall(request, context)
 
-    def StreamingOutputCall(self, request, context):
-      return servicer_methods.StreamingOutputCall(request, context)
+        def StreamingOutputCall(self, request, context):
+            return servicer_methods.StreamingOutputCall(request, context)
 
-    def StreamingInputCall(self, request_iter, context):
-      return servicer_methods.StreamingInputCall(request_iter, context)
+        def StreamingInputCall(self, request_iter, context):
+            return servicer_methods.StreamingInputCall(request_iter, context)
 
-    def FullDuplexCall(self, request_iter, context):
-      return servicer_methods.FullDuplexCall(request_iter, context)
+        def FullDuplexCall(self, request_iter, context):
+            return servicer_methods.FullDuplexCall(request_iter, context)
 
-    def HalfDuplexCall(self, request_iter, context):
-      return servicer_methods.HalfDuplexCall(request_iter, context)
+        def HalfDuplexCall(self, request_iter, context):
+            return servicer_methods.HalfDuplexCall(request_iter, context)
 
-  server = grpc.server(
-      futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
-  getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(), server)
-  port = server.add_insecure_port('[::]:0')
-  server.start()
-  channel = grpc.insecure_channel('localhost:{}'.format(port))
-  stub = getattr(service_pb2, STUB_IDENTIFIER)(channel)
-  return _Service(servicer_methods, server, stub)
+    server = grpc.server(
+        futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
+    getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(), server)
+    port = server.add_insecure_port('[::]:0')
+    server.start()
+    channel = grpc.insecure_channel('localhost:{}'.format(port))
+    stub = getattr(service_pb2, STUB_IDENTIFIER)(channel)
+    return _Service(servicer_methods, server, stub)
 
 
 def _CreateIncompleteService():
-  """Provides a servicer backend that fails to implement methods and its stub.
+    """Provides a servicer backend that fails to implement methods and its stub.
 
   Returns:
     A _Service with which to test RPCs. The returned _Service's
       servicer_methods implements none of the methods required of it.
   """
 
-  class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
-    pass
+    class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
+        pass
 
-  server = grpc.server(
-      futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
-  getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(), server)
-  port = server.add_insecure_port('[::]:0')
-  server.start()
-  channel = grpc.insecure_channel('localhost:{}'.format(port))
-  stub = getattr(service_pb2, STUB_IDENTIFIER)(channel)
-  return _Service(None, server, stub)
+    server = grpc.server(
+        futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
+    getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(), server)
+    port = server.add_insecure_port('[::]:0')
+    server.start()
+    channel = grpc.insecure_channel('localhost:{}'.format(port))
+    stub = getattr(service_pb2, STUB_IDENTIFIER)(channel)
+    return _Service(None, server, stub)
 
 
 def _streaming_input_request_iterator():
-  for _ in range(3):
-    request = request_pb2.StreamingInputCallRequest()
-    request.payload.payload_type = payload_pb2.COMPRESSABLE
-    request.payload.payload_compressable = 'a'
-    yield request
+    for _ in range(3):
+        request = request_pb2.StreamingInputCallRequest()
+        request.payload.payload_type = payload_pb2.COMPRESSABLE
+        request.payload.payload_compressable = 'a'
+        yield request
 
 
 def _streaming_output_request():
-  request = request_pb2.StreamingOutputCallRequest()
-  sizes = [1, 2, 3]
-  request.response_parameters.add(size=sizes[0], interval_us=0)
-  request.response_parameters.add(size=sizes[1], interval_us=0)
-  request.response_parameters.add(size=sizes[2], interval_us=0)
-  return request
+    request = request_pb2.StreamingOutputCallRequest()
+    sizes = [1, 2, 3]
+    request.response_parameters.add(size=sizes[0], interval_us=0)
+    request.response_parameters.add(size=sizes[1], interval_us=0)
+    request.response_parameters.add(size=sizes[2], interval_us=0)
+    return request
 
 
 def _full_duplex_request_iterator():
-  request = request_pb2.StreamingOutputCallRequest()
-  request.response_parameters.add(size=1, interval_us=0)
-  yield request
-  request = request_pb2.StreamingOutputCallRequest()
-  request.response_parameters.add(size=2, interval_us=0)
-  request.response_parameters.add(size=3, interval_us=0)
-  yield request
+    request = request_pb2.StreamingOutputCallRequest()
+    request.response_parameters.add(size=1, interval_us=0)
+    yield request
+    request = request_pb2.StreamingOutputCallRequest()
+    request.response_parameters.add(size=2, interval_us=0)
+    request.response_parameters.add(size=3, interval_us=0)
+    yield request
 
 
 class PythonPluginTest(unittest.TestCase):
-  """Test case for the gRPC Python protoc-plugin.
+    """Test case for the gRPC Python protoc-plugin.
 
   While reading these tests, remember that the futures API
   (`stub.method.future()`) only gives futures for the *response-unary*
   methods and does not exist for response-streaming methods.
   """
 
-  def testImportAttributes(self):
-    # check that we can access the generated module and its members.
-    self.assertIsNotNone(
-        getattr(service_pb2, STUB_IDENTIFIER, None))
-    self.assertIsNotNone(
-        getattr(service_pb2, SERVICER_IDENTIFIER, None))
-    self.assertIsNotNone(
-        getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER, None))
-
-  def testUpDown(self):
-    service = _CreateService()
-    self.assertIsNotNone(service.servicer_methods)
-    self.assertIsNotNone(service.server)
-    self.assertIsNotNone(service.stub)
-
-  def testIncompleteServicer(self):
-    service = _CreateIncompleteService()
-    request = request_pb2.SimpleRequest(response_size=13)
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      service.stub.UnaryCall(request)
-    self.assertIs(
-        exception_context.exception.code(), grpc.StatusCode.UNIMPLEMENTED)
-
-  def testUnaryCall(self):
-    service = _CreateService()
-    request = request_pb2.SimpleRequest(response_size=13)
-    response = service.stub.UnaryCall(request)
-    expected_response = service.servicer_methods.UnaryCall(
-        request, 'not a real context!')
-    self.assertEqual(expected_response, response)
-
-  def testUnaryCallFuture(self):
-    service = _CreateService()
-    request = request_pb2.SimpleRequest(response_size=13)
-    # Check that the call does not block waiting for the server to respond.
-    with service.servicer_methods.pause():
-      response_future = service.stub.UnaryCall.future(request)
-    response = response_future.result()
-    expected_response = service.servicer_methods.UnaryCall(
-        request, 'not a real RpcContext!')
-    self.assertEqual(expected_response, response)
-
-  def testUnaryCallFutureExpired(self):
-    service = _CreateService()
-    request = request_pb2.SimpleRequest(response_size=13)
-    with service.servicer_methods.pause():
-      response_future = service.stub.UnaryCall.future(
-          request, timeout=test_constants.SHORT_TIMEOUT)
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        response_future.result()
-    self.assertIs(
-        exception_context.exception.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
-    self.assertIs(response_future.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
-
-  def testUnaryCallFutureCancelled(self):
-    service = _CreateService()
-    request = request_pb2.SimpleRequest(response_size=13)
-    with service.servicer_methods.pause():
-      response_future = service.stub.UnaryCall.future(request)
-      response_future.cancel()
-    self.assertTrue(response_future.cancelled())
-    self.assertIs(response_future.code(), grpc.StatusCode.CANCELLED)
-
-  def testUnaryCallFutureFailed(self):
-    service = _CreateService()
-    request = request_pb2.SimpleRequest(response_size=13)
-    with service.servicer_methods.fail():
-      response_future = service.stub.UnaryCall.future(request)
-      self.assertIsNotNone(response_future.exception())
-    self.assertIs(response_future.code(), grpc.StatusCode.UNKNOWN)
-
-  def testStreamingOutputCall(self):
-    service = _CreateService()
-    request = _streaming_output_request()
-    responses = service.stub.StreamingOutputCall(request)
-    expected_responses = service.servicer_methods.StreamingOutputCall(
-        request, 'not a real RpcContext!')
-    for expected_response, response in moves.zip_longest(
-        expected_responses, responses):
-      self.assertEqual(expected_response, response)
-
-  def testStreamingOutputCallExpired(self):
-    service = _CreateService()
-    request = _streaming_output_request()
-    with service.servicer_methods.pause():
-      responses = service.stub.StreamingOutputCall(
-          request, timeout=test_constants.SHORT_TIMEOUT)
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        list(responses)
-    self.assertIs(
-        exception_context.exception.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
-
-  def testStreamingOutputCallCancelled(self):
-    service = _CreateService()
-    request = _streaming_output_request()
-    responses = service.stub.StreamingOutputCall(request)
-    next(responses)
-    responses.cancel()
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      next(responses)
-    self.assertIs(responses.code(), grpc.StatusCode.CANCELLED)
-
-  def testStreamingOutputCallFailed(self):
-    service = _CreateService()
-    request = _streaming_output_request()
-    with service.servicer_methods.fail():
-      responses = service.stub.StreamingOutputCall(request)
-      self.assertIsNotNone(responses)
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        next(responses)
-    self.assertIs(exception_context.exception.code(), grpc.StatusCode.UNKNOWN)
-
-  def testStreamingInputCall(self):
-    service = _CreateService()
-    response = service.stub.StreamingInputCall(
-        _streaming_input_request_iterator())
-    expected_response = service.servicer_methods.StreamingInputCall(
-        _streaming_input_request_iterator(),
-        'not a real RpcContext!')
-    self.assertEqual(expected_response, response)
-
-  def testStreamingInputCallFuture(self):
-    service = _CreateService()
-    with service.servicer_methods.pause():
-      response_future = service.stub.StreamingInputCall.future(
-          _streaming_input_request_iterator())
-    response = response_future.result()
-    expected_response = service.servicer_methods.StreamingInputCall(
-        _streaming_input_request_iterator(),
-        'not a real RpcContext!')
-    self.assertEqual(expected_response, response)
-
-  def testStreamingInputCallFutureExpired(self):
-    service = _CreateService()
-    with service.servicer_methods.pause():
-      response_future = service.stub.StreamingInputCall.future(
-          _streaming_input_request_iterator(),
-          timeout=test_constants.SHORT_TIMEOUT)
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        response_future.result()
-    self.assertIsInstance(response_future.exception(), grpc.RpcError)
-    self.assertIs(
-        response_future.exception().code(), grpc.StatusCode.DEADLINE_EXCEEDED)
-    self.assertIs(
-        exception_context.exception.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
-
-  def testStreamingInputCallFutureCancelled(self):
-    service = _CreateService()
-    with service.servicer_methods.pause():
-      response_future = service.stub.StreamingInputCall.future(
-          _streaming_input_request_iterator())
-      response_future.cancel()
-    self.assertTrue(response_future.cancelled())
-    with self.assertRaises(grpc.FutureCancelledError):
-      response_future.result()
-
-  def testStreamingInputCallFutureFailed(self):
-    service = _CreateService()
-    with service.servicer_methods.fail():
-      response_future = service.stub.StreamingInputCall.future(
-          _streaming_input_request_iterator())
-      self.assertIsNotNone(response_future.exception())
-      self.assertIs(response_future.code(), grpc.StatusCode.UNKNOWN)
-
-  def testFullDuplexCall(self):
-    service = _CreateService()
-    responses = service.stub.FullDuplexCall(
-        _full_duplex_request_iterator())
-    expected_responses = service.servicer_methods.FullDuplexCall(
-        _full_duplex_request_iterator(),
-        'not a real RpcContext!')
-    for expected_response, response in moves.zip_longest(
-        expected_responses, responses):
-      self.assertEqual(expected_response, response)
-
-  def testFullDuplexCallExpired(self):
-    request_iterator = _full_duplex_request_iterator()
-    service = _CreateService()
-    with service.servicer_methods.pause():
-      responses = service.stub.FullDuplexCall(
-          request_iterator, timeout=test_constants.SHORT_TIMEOUT)
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        list(responses)
-    self.assertIs(
-        exception_context.exception.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
-
-  def testFullDuplexCallCancelled(self):
-    service = _CreateService()
-    request_iterator = _full_duplex_request_iterator()
-    responses = service.stub.FullDuplexCall(request_iterator)
-    next(responses)
-    responses.cancel()
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      next(responses)
-    self.assertIs(
-        exception_context.exception.code(), grpc.StatusCode.CANCELLED)
-
-  def testFullDuplexCallFailed(self):
-    request_iterator = _full_duplex_request_iterator()
-    service = _CreateService()
-    with service.servicer_methods.fail():
-      responses = service.stub.FullDuplexCall(request_iterator)
-      with self.assertRaises(grpc.RpcError) as exception_context:
+    def testImportAttributes(self):
+        # check that we can access the generated module and its members.
+        self.assertIsNotNone(getattr(service_pb2, STUB_IDENTIFIER, None))
+        self.assertIsNotNone(getattr(service_pb2, SERVICER_IDENTIFIER, None))
+        self.assertIsNotNone(
+            getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER, None))
+
+    def testUpDown(self):
+        service = _CreateService()
+        self.assertIsNotNone(service.servicer_methods)
+        self.assertIsNotNone(service.server)
+        self.assertIsNotNone(service.stub)
+
+    def testIncompleteServicer(self):
+        service = _CreateIncompleteService()
+        request = request_pb2.SimpleRequest(response_size=13)
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            service.stub.UnaryCall(request)
+        self.assertIs(exception_context.exception.code(),
+                      grpc.StatusCode.UNIMPLEMENTED)
+
+    def testUnaryCall(self):
+        service = _CreateService()
+        request = request_pb2.SimpleRequest(response_size=13)
+        response = service.stub.UnaryCall(request)
+        expected_response = service.servicer_methods.UnaryCall(
+            request, 'not a real context!')
+        self.assertEqual(expected_response, response)
+
+    def testUnaryCallFuture(self):
+        service = _CreateService()
+        request = request_pb2.SimpleRequest(response_size=13)
+        # Check that the call does not block waiting for the server to respond.
+        with service.servicer_methods.pause():
+            response_future = service.stub.UnaryCall.future(request)
+        response = response_future.result()
+        expected_response = service.servicer_methods.UnaryCall(
+            request, 'not a real RpcContext!')
+        self.assertEqual(expected_response, response)
+
+    def testUnaryCallFutureExpired(self):
+        service = _CreateService()
+        request = request_pb2.SimpleRequest(response_size=13)
+        with service.servicer_methods.pause():
+            response_future = service.stub.UnaryCall.future(
+                request, timeout=test_constants.SHORT_TIMEOUT)
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                response_future.result()
+        self.assertIs(exception_context.exception.code(),
+                      grpc.StatusCode.DEADLINE_EXCEEDED)
+        self.assertIs(response_future.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
+
+    def testUnaryCallFutureCancelled(self):
+        service = _CreateService()
+        request = request_pb2.SimpleRequest(response_size=13)
+        with service.servicer_methods.pause():
+            response_future = service.stub.UnaryCall.future(request)
+            response_future.cancel()
+        self.assertTrue(response_future.cancelled())
+        self.assertIs(response_future.code(), grpc.StatusCode.CANCELLED)
+
+    def testUnaryCallFutureFailed(self):
+        service = _CreateService()
+        request = request_pb2.SimpleRequest(response_size=13)
+        with service.servicer_methods.fail():
+            response_future = service.stub.UnaryCall.future(request)
+            self.assertIsNotNone(response_future.exception())
+        self.assertIs(response_future.code(), grpc.StatusCode.UNKNOWN)
+
+    def testStreamingOutputCall(self):
+        service = _CreateService()
+        request = _streaming_output_request()
+        responses = service.stub.StreamingOutputCall(request)
+        expected_responses = service.servicer_methods.StreamingOutputCall(
+            request, 'not a real RpcContext!')
+        for expected_response, response in moves.zip_longest(expected_responses,
+                                                             responses):
+            self.assertEqual(expected_response, response)
+
+    def testStreamingOutputCallExpired(self):
+        service = _CreateService()
+        request = _streaming_output_request()
+        with service.servicer_methods.pause():
+            responses = service.stub.StreamingOutputCall(
+                request, timeout=test_constants.SHORT_TIMEOUT)
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                list(responses)
+        self.assertIs(exception_context.exception.code(),
+                      grpc.StatusCode.DEADLINE_EXCEEDED)
+
+    def testStreamingOutputCallCancelled(self):
+        service = _CreateService()
+        request = _streaming_output_request()
+        responses = service.stub.StreamingOutputCall(request)
         next(responses)
-    self.assertIs(exception_context.exception.code(), grpc.StatusCode.UNKNOWN)
-
-  def testHalfDuplexCall(self):
-    service = _CreateService()
-    def half_duplex_request_iterator():
-      request = request_pb2.StreamingOutputCallRequest()
-      request.response_parameters.add(size=1, interval_us=0)
-      yield request
-      request = request_pb2.StreamingOutputCallRequest()
-      request.response_parameters.add(size=2, interval_us=0)
-      request.response_parameters.add(size=3, interval_us=0)
-      yield request
-    responses = service.stub.HalfDuplexCall(half_duplex_request_iterator())
-    expected_responses = service.servicer_methods.HalfDuplexCall(
-        half_duplex_request_iterator(), 'not a real RpcContext!')
-    for expected_response, response in moves.zip_longest(
-        expected_responses, responses):
-      self.assertEqual(expected_response, response)
-
-  def testHalfDuplexCallWedged(self):
-    condition = threading.Condition()
-    wait_cell = [False]
-    @contextlib.contextmanager
-    def wait():  # pylint: disable=invalid-name
-      # Where's Python 3's 'nonlocal' statement when you need it?
-      with condition:
-        wait_cell[0] = True
-      yield
-      with condition:
-        wait_cell[0] = False
-        condition.notify_all()
-    def half_duplex_request_iterator():
-      request = request_pb2.StreamingOutputCallRequest()
-      request.response_parameters.add(size=1, interval_us=0)
-      yield request
-      with condition:
-        while wait_cell[0]:
-          condition.wait()
-    service = _CreateService()
-    with wait():
-      responses = service.stub.HalfDuplexCall(
-          half_duplex_request_iterator(), timeout=test_constants.SHORT_TIMEOUT)
-      # half-duplex waits for the client to send all info
-      with self.assertRaises(grpc.RpcError) as exception_context:
+        responses.cancel()
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            next(responses)
+        self.assertIs(responses.code(), grpc.StatusCode.CANCELLED)
+
+    def testStreamingOutputCallFailed(self):
+        service = _CreateService()
+        request = _streaming_output_request()
+        with service.servicer_methods.fail():
+            responses = service.stub.StreamingOutputCall(request)
+            self.assertIsNotNone(responses)
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                next(responses)
+        self.assertIs(exception_context.exception.code(),
+                      grpc.StatusCode.UNKNOWN)
+
+    def testStreamingInputCall(self):
+        service = _CreateService()
+        response = service.stub.StreamingInputCall(
+            _streaming_input_request_iterator())
+        expected_response = service.servicer_methods.StreamingInputCall(
+            _streaming_input_request_iterator(), 'not a real RpcContext!')
+        self.assertEqual(expected_response, response)
+
+    def testStreamingInputCallFuture(self):
+        service = _CreateService()
+        with service.servicer_methods.pause():
+            response_future = service.stub.StreamingInputCall.future(
+                _streaming_input_request_iterator())
+        response = response_future.result()
+        expected_response = service.servicer_methods.StreamingInputCall(
+            _streaming_input_request_iterator(), 'not a real RpcContext!')
+        self.assertEqual(expected_response, response)
+
+    def testStreamingInputCallFutureExpired(self):
+        service = _CreateService()
+        with service.servicer_methods.pause():
+            response_future = service.stub.StreamingInputCall.future(
+                _streaming_input_request_iterator(),
+                timeout=test_constants.SHORT_TIMEOUT)
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                response_future.result()
+        self.assertIsInstance(response_future.exception(), grpc.RpcError)
+        self.assertIs(response_future.exception().code(),
+                      grpc.StatusCode.DEADLINE_EXCEEDED)
+        self.assertIs(exception_context.exception.code(),
+                      grpc.StatusCode.DEADLINE_EXCEEDED)
+
+    def testStreamingInputCallFutureCancelled(self):
+        service = _CreateService()
+        with service.servicer_methods.pause():
+            response_future = service.stub.StreamingInputCall.future(
+                _streaming_input_request_iterator())
+            response_future.cancel()
+        self.assertTrue(response_future.cancelled())
+        with self.assertRaises(grpc.FutureCancelledError):
+            response_future.result()
+
+    def testStreamingInputCallFutureFailed(self):
+        service = _CreateService()
+        with service.servicer_methods.fail():
+            response_future = service.stub.StreamingInputCall.future(
+                _streaming_input_request_iterator())
+            self.assertIsNotNone(response_future.exception())
+            self.assertIs(response_future.code(), grpc.StatusCode.UNKNOWN)
+
+    def testFullDuplexCall(self):
+        service = _CreateService()
+        responses = service.stub.FullDuplexCall(_full_duplex_request_iterator())
+        expected_responses = service.servicer_methods.FullDuplexCall(
+            _full_duplex_request_iterator(), 'not a real RpcContext!')
+        for expected_response, response in moves.zip_longest(expected_responses,
+                                                             responses):
+            self.assertEqual(expected_response, response)
+
+    def testFullDuplexCallExpired(self):
+        request_iterator = _full_duplex_request_iterator()
+        service = _CreateService()
+        with service.servicer_methods.pause():
+            responses = service.stub.FullDuplexCall(
+                request_iterator, timeout=test_constants.SHORT_TIMEOUT)
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                list(responses)
+        self.assertIs(exception_context.exception.code(),
+                      grpc.StatusCode.DEADLINE_EXCEEDED)
+
+    def testFullDuplexCallCancelled(self):
+        service = _CreateService()
+        request_iterator = _full_duplex_request_iterator()
+        responses = service.stub.FullDuplexCall(request_iterator)
         next(responses)
-    self.assertIs(
-        exception_context.exception.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
+        responses.cancel()
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            next(responses)
+        self.assertIs(exception_context.exception.code(),
+                      grpc.StatusCode.CANCELLED)
+
+    def testFullDuplexCallFailed(self):
+        request_iterator = _full_duplex_request_iterator()
+        service = _CreateService()
+        with service.servicer_methods.fail():
+            responses = service.stub.FullDuplexCall(request_iterator)
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                next(responses)
+        self.assertIs(exception_context.exception.code(),
+                      grpc.StatusCode.UNKNOWN)
+
+    def testHalfDuplexCall(self):
+        service = _CreateService()
+
+        def half_duplex_request_iterator():
+            request = request_pb2.StreamingOutputCallRequest()
+            request.response_parameters.add(size=1, interval_us=0)
+            yield request
+            request = request_pb2.StreamingOutputCallRequest()
+            request.response_parameters.add(size=2, interval_us=0)
+            request.response_parameters.add(size=3, interval_us=0)
+            yield request
+
+        responses = service.stub.HalfDuplexCall(half_duplex_request_iterator())
+        expected_responses = service.servicer_methods.HalfDuplexCall(
+            half_duplex_request_iterator(), 'not a real RpcContext!')
+        for expected_response, response in moves.zip_longest(expected_responses,
+                                                             responses):
+            self.assertEqual(expected_response, response)
+
+    def testHalfDuplexCallWedged(self):
+        condition = threading.Condition()
+        wait_cell = [False]
+
+        @contextlib.contextmanager
+        def wait():  # pylint: disable=invalid-name
+            # Where's Python 3's 'nonlocal' statement when you need it?
+            with condition:
+                wait_cell[0] = True
+            yield
+            with condition:
+                wait_cell[0] = False
+                condition.notify_all()
+
+        def half_duplex_request_iterator():
+            request = request_pb2.StreamingOutputCallRequest()
+            request.response_parameters.add(size=1, interval_us=0)
+            yield request
+            with condition:
+                while wait_cell[0]:
+                    condition.wait()
+
+        service = _CreateService()
+        with wait():
+            responses = service.stub.HalfDuplexCall(
+                half_duplex_request_iterator(),
+                timeout=test_constants.SHORT_TIMEOUT)
+            # half-duplex waits for the client to send all info
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                next(responses)
+        self.assertIs(exception_context.exception.code(),
+                      grpc.StatusCode.DEADLINE_EXCEEDED)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/_split_definitions_test.py b/src/python/grpcio_tests/tests/protoc_plugin/_split_definitions_test.py
index f8ae05bb7a97a3f102ec889e1dbe08b5f551612b..bcc01f39787a08644f7bee34b946c9547849f339 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/_split_definitions_test.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/_split_definitions_test.py
@@ -49,256 +49,264 @@ from tests.unit.framework.common import test_constants
 
 _MESSAGES_IMPORT = b'import "messages.proto";'
 
+
 @contextlib.contextmanager
 def _system_path(path):
-  old_system_path = sys.path[:]
-  sys.path = sys.path[0:1] + path + sys.path[1:]
-  yield
-  sys.path = old_system_path
+    old_system_path = sys.path[:]
+    sys.path = sys.path[0:1] + path + sys.path[1:]
+    yield
+    sys.path = old_system_path
 
 
 class DummySplitServicer(object):
 
-  def __init__(self, request_class, response_class):
-    self.request_class = request_class
-    self.response_class = response_class
+    def __init__(self, request_class, response_class):
+        self.request_class = request_class
+        self.response_class = response_class
 
-  def Call(self, request, context):
-    return self.response_class()
+    def Call(self, request, context):
+        return self.response_class()
 
 
 class SeparateTestMixin(object):
 
-  def testImportAttributes(self):
-    with _system_path([self.python_out_directory]):
-      pb2 = importlib.import_module(self.pb2_import)
-    pb2.Request
-    pb2.Response
-    if self.should_find_services_in_pb2:
-      pb2.TestServiceServicer
-    else:
-      with self.assertRaises(AttributeError):
-        pb2.TestServiceServicer
-
-    with _system_path([self.grpc_python_out_directory]):
-      pb2_grpc = importlib.import_module(self.pb2_grpc_import)
-    pb2_grpc.TestServiceServicer
-    with self.assertRaises(AttributeError):
-      pb2_grpc.Request
-    with self.assertRaises(AttributeError):
-      pb2_grpc.Response
-
-  def testCall(self):
-    with _system_path([self.python_out_directory]):
-      pb2 = importlib.import_module(self.pb2_import)
-    with _system_path([self.grpc_python_out_directory]):
-      pb2_grpc = importlib.import_module(self.pb2_grpc_import)
-    server = grpc.server(
-        futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
-    pb2_grpc.add_TestServiceServicer_to_server(
-        DummySplitServicer(
-            pb2.Request, pb2.Response), server)
-    port = server.add_insecure_port('[::]:0')
-    server.start()
-    channel = grpc.insecure_channel('localhost:{}'.format(port))
-    stub = pb2_grpc.TestServiceStub(channel)
-    request = pb2.Request()
-    expected_response = pb2.Response()
-    response = stub.Call(request)
-    self.assertEqual(expected_response, response)
+    def testImportAttributes(self):
+        with _system_path([self.python_out_directory]):
+            pb2 = importlib.import_module(self.pb2_import)
+        pb2.Request
+        pb2.Response
+        if self.should_find_services_in_pb2:
+            pb2.TestServiceServicer
+        else:
+            with self.assertRaises(AttributeError):
+                pb2.TestServiceServicer
+
+        with _system_path([self.grpc_python_out_directory]):
+            pb2_grpc = importlib.import_module(self.pb2_grpc_import)
+        pb2_grpc.TestServiceServicer
+        with self.assertRaises(AttributeError):
+            pb2_grpc.Request
+        with self.assertRaises(AttributeError):
+            pb2_grpc.Response
+
+    def testCall(self):
+        with _system_path([self.python_out_directory]):
+            pb2 = importlib.import_module(self.pb2_import)
+        with _system_path([self.grpc_python_out_directory]):
+            pb2_grpc = importlib.import_module(self.pb2_grpc_import)
+        server = grpc.server(
+            futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
+        pb2_grpc.add_TestServiceServicer_to_server(
+            DummySplitServicer(pb2.Request, pb2.Response), server)
+        port = server.add_insecure_port('[::]:0')
+        server.start()
+        channel = grpc.insecure_channel('localhost:{}'.format(port))
+        stub = pb2_grpc.TestServiceStub(channel)
+        request = pb2.Request()
+        expected_response = pb2.Response()
+        response = stub.Call(request)
+        self.assertEqual(expected_response, response)
 
 
 class CommonTestMixin(object):
 
-  def testImportAttributes(self):
-    with _system_path([self.python_out_directory]):
-      pb2 = importlib.import_module(self.pb2_import)
-    pb2.Request
-    pb2.Response
-    if self.should_find_services_in_pb2:
-      pb2.TestServiceServicer
-    else:
-      with self.assertRaises(AttributeError):
-        pb2.TestServiceServicer
-
-    with _system_path([self.grpc_python_out_directory]):
-      pb2_grpc = importlib.import_module(self.pb2_grpc_import)
-    pb2_grpc.TestServiceServicer
-    with self.assertRaises(AttributeError):
-      pb2_grpc.Request
-    with self.assertRaises(AttributeError):
-      pb2_grpc.Response
-
-  def testCall(self):
-    with _system_path([self.python_out_directory]):
-      pb2 = importlib.import_module(self.pb2_import)
-    with _system_path([self.grpc_python_out_directory]):
-      pb2_grpc = importlib.import_module(self.pb2_grpc_import)
-    server = grpc.server(
-        futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
-    pb2_grpc.add_TestServiceServicer_to_server(
-        DummySplitServicer(
-            pb2.Request, pb2.Response), server)
-    port = server.add_insecure_port('[::]:0')
-    server.start()
-    channel = grpc.insecure_channel('localhost:{}'.format(port))
-    stub = pb2_grpc.TestServiceStub(channel)
-    request = pb2.Request()
-    expected_response = pb2.Response()
-    response = stub.Call(request)
-    self.assertEqual(expected_response, response)
+    def testImportAttributes(self):
+        with _system_path([self.python_out_directory]):
+            pb2 = importlib.import_module(self.pb2_import)
+        pb2.Request
+        pb2.Response
+        if self.should_find_services_in_pb2:
+            pb2.TestServiceServicer
+        else:
+            with self.assertRaises(AttributeError):
+                pb2.TestServiceServicer
+
+        with _system_path([self.grpc_python_out_directory]):
+            pb2_grpc = importlib.import_module(self.pb2_grpc_import)
+        pb2_grpc.TestServiceServicer
+        with self.assertRaises(AttributeError):
+            pb2_grpc.Request
+        with self.assertRaises(AttributeError):
+            pb2_grpc.Response
+
+    def testCall(self):
+        with _system_path([self.python_out_directory]):
+            pb2 = importlib.import_module(self.pb2_import)
+        with _system_path([self.grpc_python_out_directory]):
+            pb2_grpc = importlib.import_module(self.pb2_grpc_import)
+        server = grpc.server(
+            futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
+        pb2_grpc.add_TestServiceServicer_to_server(
+            DummySplitServicer(pb2.Request, pb2.Response), server)
+        port = server.add_insecure_port('[::]:0')
+        server.start()
+        channel = grpc.insecure_channel('localhost:{}'.format(port))
+        stub = pb2_grpc.TestServiceStub(channel)
+        request = pb2.Request()
+        expected_response = pb2.Response()
+        response = stub.Call(request)
+        self.assertEqual(expected_response, response)
 
 
 class SameSeparateTest(unittest.TestCase, SeparateTestMixin):
 
-  def setUp(self):
-    same_proto_contents = pkgutil.get_data(
-        'tests.protoc_plugin.protos.invocation_testing', 'same.proto')
-    self.directory = tempfile.mkdtemp(suffix='same_separate', dir='.')
-    self.proto_directory = os.path.join(self.directory, 'proto_path')
-    self.python_out_directory = os.path.join(self.directory, 'python_out')
-    self.grpc_python_out_directory = os.path.join(self.directory, 'grpc_python_out')
-    os.makedirs(self.proto_directory)
-    os.makedirs(self.python_out_directory)
-    os.makedirs(self.grpc_python_out_directory)
-    same_proto_file = os.path.join(self.proto_directory, 'same_separate.proto')
-    open(same_proto_file, 'wb').write(same_proto_contents)
-    protoc_result = protoc.main([
-        '',
-        '--proto_path={}'.format(self.proto_directory),
-        '--python_out={}'.format(self.python_out_directory),
-        '--grpc_python_out=grpc_2_0:{}'.format(self.grpc_python_out_directory),
-        same_proto_file,
-    ])
-    if protoc_result != 0:
-      raise Exception("unexpected protoc error")
-    open(os.path.join(self.grpc_python_out_directory, '__init__.py'), 'w').write('')
-    open(os.path.join(self.python_out_directory, '__init__.py'), 'w').write('')
-    self.pb2_import = 'same_separate_pb2'
-    self.pb2_grpc_import = 'same_separate_pb2_grpc'
-    self.should_find_services_in_pb2 = False
-
-  def tearDown(self):
-    shutil.rmtree(self.directory)
+    def setUp(self):
+        same_proto_contents = pkgutil.get_data(
+            'tests.protoc_plugin.protos.invocation_testing', 'same.proto')
+        self.directory = tempfile.mkdtemp(suffix='same_separate', dir='.')
+        self.proto_directory = os.path.join(self.directory, 'proto_path')
+        self.python_out_directory = os.path.join(self.directory, 'python_out')
+        self.grpc_python_out_directory = os.path.join(self.directory,
+                                                      'grpc_python_out')
+        os.makedirs(self.proto_directory)
+        os.makedirs(self.python_out_directory)
+        os.makedirs(self.grpc_python_out_directory)
+        same_proto_file = os.path.join(self.proto_directory,
+                                       'same_separate.proto')
+        open(same_proto_file, 'wb').write(same_proto_contents)
+        protoc_result = protoc.main([
+            '',
+            '--proto_path={}'.format(self.proto_directory),
+            '--python_out={}'.format(self.python_out_directory),
+            '--grpc_python_out=grpc_2_0:{}'.format(
+                self.grpc_python_out_directory),
+            same_proto_file,
+        ])
+        if protoc_result != 0:
+            raise Exception("unexpected protoc error")
+        open(os.path.join(self.grpc_python_out_directory, '__init__.py'),
+             'w').write('')
+        open(os.path.join(self.python_out_directory, '__init__.py'),
+             'w').write('')
+        self.pb2_import = 'same_separate_pb2'
+        self.pb2_grpc_import = 'same_separate_pb2_grpc'
+        self.should_find_services_in_pb2 = False
+
+    def tearDown(self):
+        shutil.rmtree(self.directory)
 
 
 class SameCommonTest(unittest.TestCase, CommonTestMixin):
 
-  def setUp(self):
-    same_proto_contents = pkgutil.get_data(
-        'tests.protoc_plugin.protos.invocation_testing', 'same.proto')
-    self.directory = tempfile.mkdtemp(suffix='same_common', dir='.')
-    self.proto_directory = os.path.join(self.directory, 'proto_path')
-    self.python_out_directory = os.path.join(self.directory, 'python_out')
-    self.grpc_python_out_directory = self.python_out_directory
-    os.makedirs(self.proto_directory)
-    os.makedirs(self.python_out_directory)
-    same_proto_file = os.path.join(self.proto_directory, 'same_common.proto')
-    open(same_proto_file, 'wb').write(same_proto_contents)
-    protoc_result = protoc.main([
-        '',
-        '--proto_path={}'.format(self.proto_directory),
-        '--python_out={}'.format(self.python_out_directory),
-        '--grpc_python_out={}'.format(self.grpc_python_out_directory),
-        same_proto_file,
-    ])
-    if protoc_result != 0:
-      raise Exception("unexpected protoc error")
-    open(os.path.join(self.python_out_directory, '__init__.py'), 'w').write('')
-    self.pb2_import = 'same_common_pb2'
-    self.pb2_grpc_import = 'same_common_pb2_grpc'
-    self.should_find_services_in_pb2 = True
-
-  def tearDown(self):
-    shutil.rmtree(self.directory)
+    def setUp(self):
+        same_proto_contents = pkgutil.get_data(
+            'tests.protoc_plugin.protos.invocation_testing', 'same.proto')
+        self.directory = tempfile.mkdtemp(suffix='same_common', dir='.')
+        self.proto_directory = os.path.join(self.directory, 'proto_path')
+        self.python_out_directory = os.path.join(self.directory, 'python_out')
+        self.grpc_python_out_directory = self.python_out_directory
+        os.makedirs(self.proto_directory)
+        os.makedirs(self.python_out_directory)
+        same_proto_file = os.path.join(self.proto_directory,
+                                       'same_common.proto')
+        open(same_proto_file, 'wb').write(same_proto_contents)
+        protoc_result = protoc.main([
+            '',
+            '--proto_path={}'.format(self.proto_directory),
+            '--python_out={}'.format(self.python_out_directory),
+            '--grpc_python_out={}'.format(self.grpc_python_out_directory),
+            same_proto_file,
+        ])
+        if protoc_result != 0:
+            raise Exception("unexpected protoc error")
+        open(os.path.join(self.python_out_directory, '__init__.py'),
+             'w').write('')
+        self.pb2_import = 'same_common_pb2'
+        self.pb2_grpc_import = 'same_common_pb2_grpc'
+        self.should_find_services_in_pb2 = True
+
+    def tearDown(self):
+        shutil.rmtree(self.directory)
 
 
 class SplitCommonTest(unittest.TestCase, CommonTestMixin):
 
-  def setUp(self):
-    services_proto_contents = pkgutil.get_data(
-        'tests.protoc_plugin.protos.invocation_testing.split_services',
-        'services.proto')
-    messages_proto_contents = pkgutil.get_data(
-        'tests.protoc_plugin.protos.invocation_testing.split_messages',
-        'messages.proto')
-    self.directory = tempfile.mkdtemp(suffix='split_common', dir='.')
-    self.proto_directory = os.path.join(self.directory, 'proto_path')
-    self.python_out_directory = os.path.join(self.directory, 'python_out')
-    self.grpc_python_out_directory = self.python_out_directory
-    os.makedirs(self.proto_directory)
-    os.makedirs(self.python_out_directory)
-    services_proto_file = os.path.join(self.proto_directory,
-                                       'split_common_services.proto')
-    messages_proto_file = os.path.join(self.proto_directory,
-                                       'split_common_messages.proto')
-    open(services_proto_file, 'wb').write(services_proto_contents.replace(
-        _MESSAGES_IMPORT,
-        b'import "split_common_messages.proto";'
-    ))
-    open(messages_proto_file, 'wb').write(messages_proto_contents)
-    protoc_result = protoc.main([
-        '',
-        '--proto_path={}'.format(self.proto_directory),
-        '--python_out={}'.format(self.python_out_directory),
-        '--grpc_python_out={}'.format(self.grpc_python_out_directory),
-        services_proto_file,
-        messages_proto_file,
-    ])
-    if protoc_result != 0:
-      raise Exception("unexpected protoc error")
-    open(os.path.join(self.python_out_directory, '__init__.py'), 'w').write('')
-    self.pb2_import = 'split_common_messages_pb2'
-    self.pb2_grpc_import = 'split_common_services_pb2_grpc'
-    self.should_find_services_in_pb2 = False
-
-  def tearDown(self):
-    shutil.rmtree(self.directory)
+    def setUp(self):
+        services_proto_contents = pkgutil.get_data(
+            'tests.protoc_plugin.protos.invocation_testing.split_services',
+            'services.proto')
+        messages_proto_contents = pkgutil.get_data(
+            'tests.protoc_plugin.protos.invocation_testing.split_messages',
+            'messages.proto')
+        self.directory = tempfile.mkdtemp(suffix='split_common', dir='.')
+        self.proto_directory = os.path.join(self.directory, 'proto_path')
+        self.python_out_directory = os.path.join(self.directory, 'python_out')
+        self.grpc_python_out_directory = self.python_out_directory
+        os.makedirs(self.proto_directory)
+        os.makedirs(self.python_out_directory)
+        services_proto_file = os.path.join(self.proto_directory,
+                                           'split_common_services.proto')
+        messages_proto_file = os.path.join(self.proto_directory,
+                                           'split_common_messages.proto')
+        open(services_proto_file, 'wb').write(
+            services_proto_contents.replace(
+                _MESSAGES_IMPORT, b'import "split_common_messages.proto";'))
+        open(messages_proto_file, 'wb').write(messages_proto_contents)
+        protoc_result = protoc.main([
+            '',
+            '--proto_path={}'.format(self.proto_directory),
+            '--python_out={}'.format(self.python_out_directory),
+            '--grpc_python_out={}'.format(self.grpc_python_out_directory),
+            services_proto_file,
+            messages_proto_file,
+        ])
+        if protoc_result != 0:
+            raise Exception("unexpected protoc error")
+        open(os.path.join(self.python_out_directory, '__init__.py'),
+             'w').write('')
+        self.pb2_import = 'split_common_messages_pb2'
+        self.pb2_grpc_import = 'split_common_services_pb2_grpc'
+        self.should_find_services_in_pb2 = False
+
+    def tearDown(self):
+        shutil.rmtree(self.directory)
 
 
 class SplitSeparateTest(unittest.TestCase, SeparateTestMixin):
 
-  def setUp(self):
-    services_proto_contents = pkgutil.get_data(
-        'tests.protoc_plugin.protos.invocation_testing.split_services',
-        'services.proto')
-    messages_proto_contents = pkgutil.get_data(
-        'tests.protoc_plugin.protos.invocation_testing.split_messages',
-        'messages.proto')
-    self.directory = tempfile.mkdtemp(suffix='split_separate', dir='.')
-    self.proto_directory = os.path.join(self.directory, 'proto_path')
-    self.python_out_directory = os.path.join(self.directory, 'python_out')
-    self.grpc_python_out_directory = os.path.join(self.directory, 'grpc_python_out')
-    os.makedirs(self.proto_directory)
-    os.makedirs(self.python_out_directory)
-    os.makedirs(self.grpc_python_out_directory)
-    services_proto_file = os.path.join(self.proto_directory,
-                                       'split_separate_services.proto')
-    messages_proto_file = os.path.join(self.proto_directory,
-                                       'split_separate_messages.proto')
-    open(services_proto_file, 'wb').write(services_proto_contents.replace(
-        _MESSAGES_IMPORT,
-        b'import "split_separate_messages.proto";'
-    ))
-    open(messages_proto_file, 'wb').write(messages_proto_contents)
-    protoc_result = protoc.main([
-        '',
-        '--proto_path={}'.format(self.proto_directory),
-        '--python_out={}'.format(self.python_out_directory),
-        '--grpc_python_out=grpc_2_0:{}'.format(self.grpc_python_out_directory),
-        services_proto_file,
-        messages_proto_file,
-    ])
-    if protoc_result != 0:
-      raise Exception("unexpected protoc error")
-    open(os.path.join(self.python_out_directory, '__init__.py'), 'w').write('')
-    self.pb2_import = 'split_separate_messages_pb2'
-    self.pb2_grpc_import = 'split_separate_services_pb2_grpc'
-    self.should_find_services_in_pb2 = False
-
-  def tearDown(self):
-    shutil.rmtree(self.directory)
+    def setUp(self):
+        services_proto_contents = pkgutil.get_data(
+            'tests.protoc_plugin.protos.invocation_testing.split_services',
+            'services.proto')
+        messages_proto_contents = pkgutil.get_data(
+            'tests.protoc_plugin.protos.invocation_testing.split_messages',
+            'messages.proto')
+        self.directory = tempfile.mkdtemp(suffix='split_separate', dir='.')
+        self.proto_directory = os.path.join(self.directory, 'proto_path')
+        self.python_out_directory = os.path.join(self.directory, 'python_out')
+        self.grpc_python_out_directory = os.path.join(self.directory,
+                                                      'grpc_python_out')
+        os.makedirs(self.proto_directory)
+        os.makedirs(self.python_out_directory)
+        os.makedirs(self.grpc_python_out_directory)
+        services_proto_file = os.path.join(self.proto_directory,
+                                           'split_separate_services.proto')
+        messages_proto_file = os.path.join(self.proto_directory,
+                                           'split_separate_messages.proto')
+        open(services_proto_file, 'wb').write(
+            services_proto_contents.replace(
+                _MESSAGES_IMPORT, b'import "split_separate_messages.proto";'))
+        open(messages_proto_file, 'wb').write(messages_proto_contents)
+        protoc_result = protoc.main([
+            '',
+            '--proto_path={}'.format(self.proto_directory),
+            '--python_out={}'.format(self.python_out_directory),
+            '--grpc_python_out=grpc_2_0:{}'.format(
+                self.grpc_python_out_directory),
+            services_proto_file,
+            messages_proto_file,
+        ])
+        if protoc_result != 0:
+            raise Exception("unexpected protoc error")
+        open(os.path.join(self.python_out_directory, '__init__.py'),
+             'w').write('')
+        self.pb2_import = 'split_separate_messages_pb2'
+        self.pb2_grpc_import = 'split_separate_services_pb2_grpc'
+        self.should_find_services_in_pb2 = False
+
+    def tearDown(self):
+        shutil.rmtree(self.directory)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py b/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py
index 1eba9c9354311babfb8b3e1abcc02c3d133b319f..f64f4e962ba81d6743aba94475fddc1e6378b364 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py
@@ -64,84 +64,84 @@ STUB_FACTORY_IDENTIFIER = 'beta_create_TestService_stub'
 
 class _ServicerMethods(object):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._paused = False
-    self._fail = False
-
-  @contextlib.contextmanager
-  def pause(self):  # pylint: disable=invalid-name
-    with self._condition:
-      self._paused = True
-    yield
-    with self._condition:
-      self._paused = False
-      self._condition.notify_all()
-
-  @contextlib.contextmanager
-  def fail(self):  # pylint: disable=invalid-name
-    with self._condition:
-      self._fail = True
-    yield
-    with self._condition:
-      self._fail = False
-
-  def _control(self):  # pylint: disable=invalid-name
-    with self._condition:
-      if self._fail:
-        raise ValueError()
-      while self._paused:
-        self._condition.wait()
-
-  def UnaryCall(self, request, unused_rpc_context):
-    response = response_pb2.SimpleResponse()
-    response.payload.payload_type = payload_pb2.COMPRESSABLE
-    response.payload.payload_compressable = 'a' * request.response_size
-    self._control()
-    return response
-
-  def StreamingOutputCall(self, request, unused_rpc_context):
-    for parameter in request.response_parameters:
-      response = response_pb2.StreamingOutputCallResponse()
-      response.payload.payload_type = payload_pb2.COMPRESSABLE
-      response.payload.payload_compressable = 'a' * parameter.size
-      self._control()
-      yield response
-
-  def StreamingInputCall(self, request_iter, unused_rpc_context):
-    response = response_pb2.StreamingInputCallResponse()
-    aggregated_payload_size = 0
-    for request in request_iter:
-      aggregated_payload_size += len(request.payload.payload_compressable)
-    response.aggregated_payload_size = aggregated_payload_size
-    self._control()
-    return response
-
-  def FullDuplexCall(self, request_iter, unused_rpc_context):
-    for request in request_iter:
-      for parameter in request.response_parameters:
-        response = response_pb2.StreamingOutputCallResponse()
-        response.payload.payload_type = payload_pb2.COMPRESSABLE
-        response.payload.payload_compressable = 'a' * parameter.size
-        self._control()
-        yield response
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._paused = False
+        self._fail = False
+
+    @contextlib.contextmanager
+    def pause(self):  # pylint: disable=invalid-name
+        with self._condition:
+            self._paused = True
+        yield
+        with self._condition:
+            self._paused = False
+            self._condition.notify_all()
 
-  def HalfDuplexCall(self, request_iter, unused_rpc_context):
-    responses = []
-    for request in request_iter:
-      for parameter in request.response_parameters:
-        response = response_pb2.StreamingOutputCallResponse()
+    @contextlib.contextmanager
+    def fail(self):  # pylint: disable=invalid-name
+        with self._condition:
+            self._fail = True
+        yield
+        with self._condition:
+            self._fail = False
+
+    def _control(self):  # pylint: disable=invalid-name
+        with self._condition:
+            if self._fail:
+                raise ValueError()
+            while self._paused:
+                self._condition.wait()
+
+    def UnaryCall(self, request, unused_rpc_context):
+        response = response_pb2.SimpleResponse()
         response.payload.payload_type = payload_pb2.COMPRESSABLE
-        response.payload.payload_compressable = 'a' * parameter.size
+        response.payload.payload_compressable = 'a' * request.response_size
+        self._control()
+        return response
+
+    def StreamingOutputCall(self, request, unused_rpc_context):
+        for parameter in request.response_parameters:
+            response = response_pb2.StreamingOutputCallResponse()
+            response.payload.payload_type = payload_pb2.COMPRESSABLE
+            response.payload.payload_compressable = 'a' * parameter.size
+            self._control()
+            yield response
+
+    def StreamingInputCall(self, request_iter, unused_rpc_context):
+        response = response_pb2.StreamingInputCallResponse()
+        aggregated_payload_size = 0
+        for request in request_iter:
+            aggregated_payload_size += len(request.payload.payload_compressable)
+        response.aggregated_payload_size = aggregated_payload_size
         self._control()
-        responses.append(response)
-    for response in responses:
-      yield response
+        return response
+
+    def FullDuplexCall(self, request_iter, unused_rpc_context):
+        for request in request_iter:
+            for parameter in request.response_parameters:
+                response = response_pb2.StreamingOutputCallResponse()
+                response.payload.payload_type = payload_pb2.COMPRESSABLE
+                response.payload.payload_compressable = 'a' * parameter.size
+                self._control()
+                yield response
+
+    def HalfDuplexCall(self, request_iter, unused_rpc_context):
+        responses = []
+        for request in request_iter:
+            for parameter in request.response_parameters:
+                response = response_pb2.StreamingOutputCallResponse()
+                response.payload.payload_type = payload_pb2.COMPRESSABLE
+                response.payload.payload_compressable = 'a' * parameter.size
+                self._control()
+                responses.append(response)
+        for response in responses:
+            yield response
 
 
 @contextlib.contextmanager
 def _CreateService():
-  """Provides a servicer backend and a stub.
+    """Provides a servicer backend and a stub.
 
   The servicer is just the implementation of the actual servicer passed to the
   face player of the python RPC implementation; the two are detached.
@@ -151,38 +151,38 @@ def _CreateService():
       the service bound to the stub and and stub is the stub on which to invoke
       RPCs.
   """
-  servicer_methods = _ServicerMethods()
+    servicer_methods = _ServicerMethods()
 
-  class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
+    class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
 
-    def UnaryCall(self, request, context):
-      return servicer_methods.UnaryCall(request, context)
+        def UnaryCall(self, request, context):
+            return servicer_methods.UnaryCall(request, context)
 
-    def StreamingOutputCall(self, request, context):
-      return servicer_methods.StreamingOutputCall(request, context)
+        def StreamingOutputCall(self, request, context):
+            return servicer_methods.StreamingOutputCall(request, context)
 
-    def StreamingInputCall(self, request_iter, context):
-      return servicer_methods.StreamingInputCall(request_iter, context)
+        def StreamingInputCall(self, request_iter, context):
+            return servicer_methods.StreamingInputCall(request_iter, context)
 
-    def FullDuplexCall(self, request_iter, context):
-      return servicer_methods.FullDuplexCall(request_iter, context)
+        def FullDuplexCall(self, request_iter, context):
+            return servicer_methods.FullDuplexCall(request_iter, context)
 
-    def HalfDuplexCall(self, request_iter, context):
-      return servicer_methods.HalfDuplexCall(request_iter, context)
+        def HalfDuplexCall(self, request_iter, context):
+            return servicer_methods.HalfDuplexCall(request_iter, context)
 
-  servicer = Servicer()
-  server = getattr(service_pb2, SERVER_FACTORY_IDENTIFIER)(servicer)
-  port = server.add_insecure_port('[::]:0')
-  server.start()
-  channel = implementations.insecure_channel('localhost', port)
-  stub = getattr(service_pb2, STUB_FACTORY_IDENTIFIER)(channel)
-  yield (servicer_methods, stub)
-  server.stop(0)
+    servicer = Servicer()
+    server = getattr(service_pb2, SERVER_FACTORY_IDENTIFIER)(servicer)
+    port = server.add_insecure_port('[::]:0')
+    server.start()
+    channel = implementations.insecure_channel('localhost', port)
+    stub = getattr(service_pb2, STUB_FACTORY_IDENTIFIER)(channel)
+    yield (servicer_methods, stub)
+    server.stop(0)
 
 
 @contextlib.contextmanager
 def _CreateIncompleteService():
-  """Provides a servicer backend that fails to implement methods and its stub.
+    """Provides a servicer backend that fails to implement methods and its stub.
 
   The servicer is just the implementation of the actual servicer passed to the
   face player of the python RPC implementation; the two are detached.
@@ -194,297 +194,297 @@ def _CreateIncompleteService():
       RPCs.
   """
 
-  class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
-    pass
+    class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
+        pass
 
-  servicer = Servicer()
-  server = getattr(service_pb2, SERVER_FACTORY_IDENTIFIER)(servicer)
-  port = server.add_insecure_port('[::]:0')
-  server.start()
-  channel = implementations.insecure_channel('localhost', port)
-  stub = getattr(service_pb2, STUB_FACTORY_IDENTIFIER)(channel)
-  yield None, stub
-  server.stop(0)
+    servicer = Servicer()
+    server = getattr(service_pb2, SERVER_FACTORY_IDENTIFIER)(servicer)
+    port = server.add_insecure_port('[::]:0')
+    server.start()
+    channel = implementations.insecure_channel('localhost', port)
+    stub = getattr(service_pb2, STUB_FACTORY_IDENTIFIER)(channel)
+    yield None, stub
+    server.stop(0)
 
 
 def _streaming_input_request_iterator():
-  for _ in range(3):
-    request = request_pb2.StreamingInputCallRequest()
-    request.payload.payload_type = payload_pb2.COMPRESSABLE
-    request.payload.payload_compressable = 'a'
-    yield request
+    for _ in range(3):
+        request = request_pb2.StreamingInputCallRequest()
+        request.payload.payload_type = payload_pb2.COMPRESSABLE
+        request.payload.payload_compressable = 'a'
+        yield request
 
 
 def _streaming_output_request():
-  request = request_pb2.StreamingOutputCallRequest()
-  sizes = [1, 2, 3]
-  request.response_parameters.add(size=sizes[0], interval_us=0)
-  request.response_parameters.add(size=sizes[1], interval_us=0)
-  request.response_parameters.add(size=sizes[2], interval_us=0)
-  return request
+    request = request_pb2.StreamingOutputCallRequest()
+    sizes = [1, 2, 3]
+    request.response_parameters.add(size=sizes[0], interval_us=0)
+    request.response_parameters.add(size=sizes[1], interval_us=0)
+    request.response_parameters.add(size=sizes[2], interval_us=0)
+    return request
 
 
 def _full_duplex_request_iterator():
-  request = request_pb2.StreamingOutputCallRequest()
-  request.response_parameters.add(size=1, interval_us=0)
-  yield request
-  request = request_pb2.StreamingOutputCallRequest()
-  request.response_parameters.add(size=2, interval_us=0)
-  request.response_parameters.add(size=3, interval_us=0)
-  yield request
+    request = request_pb2.StreamingOutputCallRequest()
+    request.response_parameters.add(size=1, interval_us=0)
+    yield request
+    request = request_pb2.StreamingOutputCallRequest()
+    request.response_parameters.add(size=2, interval_us=0)
+    request.response_parameters.add(size=3, interval_us=0)
+    yield request
 
 
 class PythonPluginTest(unittest.TestCase):
-  """Test case for the gRPC Python protoc-plugin.
+    """Test case for the gRPC Python protoc-plugin.
 
   While reading these tests, remember that the futures API
   (`stub.method.future()`) only gives futures for the *response-unary*
   methods and does not exist for response-streaming methods.
   """
 
-  def testImportAttributes(self):
-    # check that we can access the generated module and its members.
-    self.assertIsNotNone(
-        getattr(service_pb2, SERVICER_IDENTIFIER, None))
-    self.assertIsNotNone(
-        getattr(service_pb2, STUB_IDENTIFIER, None))
-    self.assertIsNotNone(
-        getattr(service_pb2, SERVER_FACTORY_IDENTIFIER, None))
-    self.assertIsNotNone(
-        getattr(service_pb2, STUB_FACTORY_IDENTIFIER, None))
-
-  def testUpDown(self):
-    with _CreateService():
-      request_pb2.SimpleRequest(response_size=13)
-
-  def testIncompleteServicer(self):
-    with _CreateIncompleteService() as (_, stub):
-      request = request_pb2.SimpleRequest(response_size=13)
-      try:
-        stub.UnaryCall(request, test_constants.LONG_TIMEOUT)
-      except face.AbortionError as error:
-        self.assertEqual(interfaces.StatusCode.UNIMPLEMENTED, error.code)
-
-  def testUnaryCall(self):
-    with _CreateService() as (methods, stub):
-      request = request_pb2.SimpleRequest(response_size=13)
-      response = stub.UnaryCall(request, test_constants.LONG_TIMEOUT)
-    expected_response = methods.UnaryCall(request, 'not a real context!')
-    self.assertEqual(expected_response, response)
-
-  def testUnaryCallFuture(self):
-    with _CreateService() as (methods, stub):
-      request = request_pb2.SimpleRequest(response_size=13)
-      # Check that the call does not block waiting for the server to respond.
-      with methods.pause():
-        response_future = stub.UnaryCall.future(
-            request, test_constants.LONG_TIMEOUT)
-      response = response_future.result()
-    expected_response = methods.UnaryCall(request, 'not a real RpcContext!')
-    self.assertEqual(expected_response, response)
-
-  def testUnaryCallFutureExpired(self):
-    with _CreateService() as (methods, stub):
-      request = request_pb2.SimpleRequest(response_size=13)
-      with methods.pause():
-        response_future = stub.UnaryCall.future(
-            request, test_constants.SHORT_TIMEOUT)
-        with self.assertRaises(face.ExpirationError):
-          response_future.result()
-
-  def testUnaryCallFutureCancelled(self):
-    with _CreateService() as (methods, stub):
-      request = request_pb2.SimpleRequest(response_size=13)
-      with methods.pause():
-        response_future = stub.UnaryCall.future(request, 1)
-        response_future.cancel()
-        self.assertTrue(response_future.cancelled())
-
-  def testUnaryCallFutureFailed(self):
-    with _CreateService() as (methods, stub):
-      request = request_pb2.SimpleRequest(response_size=13)
-      with methods.fail():
-        response_future = stub.UnaryCall.future(
-            request, test_constants.LONG_TIMEOUT)
-        self.assertIsNotNone(response_future.exception())
-
-  def testStreamingOutputCall(self):
-    with _CreateService() as (methods, stub):
-      request = _streaming_output_request()
-      responses = stub.StreamingOutputCall(
-          request, test_constants.LONG_TIMEOUT)
-      expected_responses = methods.StreamingOutputCall(
-          request, 'not a real RpcContext!')
-      for expected_response, response in moves.zip_longest(
-          expected_responses, responses):
+    def testImportAttributes(self):
+        # check that we can access the generated module and its members.
+        self.assertIsNotNone(getattr(service_pb2, SERVICER_IDENTIFIER, None))
+        self.assertIsNotNone(getattr(service_pb2, STUB_IDENTIFIER, None))
+        self.assertIsNotNone(
+            getattr(service_pb2, SERVER_FACTORY_IDENTIFIER, None))
+        self.assertIsNotNone(
+            getattr(service_pb2, STUB_FACTORY_IDENTIFIER, None))
+
+    def testUpDown(self):
+        with _CreateService():
+            request_pb2.SimpleRequest(response_size=13)
+
+    def testIncompleteServicer(self):
+        with _CreateIncompleteService() as (_, stub):
+            request = request_pb2.SimpleRequest(response_size=13)
+            try:
+                stub.UnaryCall(request, test_constants.LONG_TIMEOUT)
+            except face.AbortionError as error:
+                self.assertEqual(interfaces.StatusCode.UNIMPLEMENTED,
+                                 error.code)
+
+    def testUnaryCall(self):
+        with _CreateService() as (methods, stub):
+            request = request_pb2.SimpleRequest(response_size=13)
+            response = stub.UnaryCall(request, test_constants.LONG_TIMEOUT)
+        expected_response = methods.UnaryCall(request, 'not a real context!')
         self.assertEqual(expected_response, response)
 
-  def testStreamingOutputCallExpired(self):
-    with _CreateService() as (methods, stub):
-      request = _streaming_output_request()
-      with methods.pause():
-        responses = stub.StreamingOutputCall(
-            request, test_constants.SHORT_TIMEOUT)
-        with self.assertRaises(face.ExpirationError):
-          list(responses)
-
-  def testStreamingOutputCallCancelled(self):
-    with _CreateService() as (methods, stub):
-      request = _streaming_output_request()
-      responses = stub.StreamingOutputCall(
-          request, test_constants.LONG_TIMEOUT)
-      next(responses)
-      responses.cancel()
-      with self.assertRaises(face.CancellationError):
-        next(responses)
-
-  def testStreamingOutputCallFailed(self):
-    with _CreateService() as (methods, stub):
-      request = _streaming_output_request()
-      with methods.fail():
-        responses = stub.StreamingOutputCall(request, 1)
-        self.assertIsNotNone(responses)
-        with self.assertRaises(face.RemoteError):
-          next(responses)
-
-  def testStreamingInputCall(self):
-    with _CreateService() as (methods, stub):
-      response = stub.StreamingInputCall(
-          _streaming_input_request_iterator(),
-          test_constants.LONG_TIMEOUT)
-    expected_response = methods.StreamingInputCall(
-        _streaming_input_request_iterator(),
-        'not a real RpcContext!')
-    self.assertEqual(expected_response, response)
-
-  def testStreamingInputCallFuture(self):
-    with _CreateService() as (methods, stub):
-      with methods.pause():
-        response_future = stub.StreamingInputCall.future(
-            _streaming_input_request_iterator(),
-            test_constants.LONG_TIMEOUT)
-      response = response_future.result()
-    expected_response = methods.StreamingInputCall(
-        _streaming_input_request_iterator(),
-        'not a real RpcContext!')
-    self.assertEqual(expected_response, response)
-
-  def testStreamingInputCallFutureExpired(self):
-    with _CreateService() as (methods, stub):
-      with methods.pause():
-        response_future = stub.StreamingInputCall.future(
-            _streaming_input_request_iterator(),
-            test_constants.SHORT_TIMEOUT)
-        with self.assertRaises(face.ExpirationError):
-          response_future.result()
-        self.assertIsInstance(
-            response_future.exception(), face.ExpirationError)
-
-  def testStreamingInputCallFutureCancelled(self):
-    with _CreateService() as (methods, stub):
-      with methods.pause():
-        response_future = stub.StreamingInputCall.future(
-            _streaming_input_request_iterator(),
-            test_constants.LONG_TIMEOUT)
-        response_future.cancel()
-        self.assertTrue(response_future.cancelled())
-      with self.assertRaises(future.CancelledError):
-        response_future.result()
-
-  def testStreamingInputCallFutureFailed(self):
-    with _CreateService() as (methods, stub):
-      with methods.fail():
-        response_future = stub.StreamingInputCall.future(
-            _streaming_input_request_iterator(),
-            test_constants.LONG_TIMEOUT)
-        self.assertIsNotNone(response_future.exception())
-
-  def testFullDuplexCall(self):
-    with _CreateService() as (methods, stub):
-      responses = stub.FullDuplexCall(
-          _full_duplex_request_iterator(),
-          test_constants.LONG_TIMEOUT)
-      expected_responses = methods.FullDuplexCall(
-          _full_duplex_request_iterator(),
-          'not a real RpcContext!')
-      for expected_response, response in moves.zip_longest(
-          expected_responses, responses):
+    def testUnaryCallFuture(self):
+        with _CreateService() as (methods, stub):
+            request = request_pb2.SimpleRequest(response_size=13)
+            # Check that the call does not block waiting for the server to respond.
+            with methods.pause():
+                response_future = stub.UnaryCall.future(
+                    request, test_constants.LONG_TIMEOUT)
+            response = response_future.result()
+        expected_response = methods.UnaryCall(request, 'not a real RpcContext!')
         self.assertEqual(expected_response, response)
 
-  def testFullDuplexCallExpired(self):
-    request_iterator = _full_duplex_request_iterator()
-    with _CreateService() as (methods, stub):
-      with methods.pause():
-        responses = stub.FullDuplexCall(
-            request_iterator, test_constants.SHORT_TIMEOUT)
-        with self.assertRaises(face.ExpirationError):
-          list(responses)
-
-  def testFullDuplexCallCancelled(self):
-    with _CreateService() as (methods, stub):
-      request_iterator = _full_duplex_request_iterator()
-      responses = stub.FullDuplexCall(
-          request_iterator, test_constants.LONG_TIMEOUT)
-      next(responses)
-      responses.cancel()
-      with self.assertRaises(face.CancellationError):
-        next(responses)
-
-  def testFullDuplexCallFailed(self):
-    request_iterator = _full_duplex_request_iterator()
-    with _CreateService() as (methods, stub):
-      with methods.fail():
-        responses = stub.FullDuplexCall(
-            request_iterator, test_constants.LONG_TIMEOUT)
-        self.assertIsNotNone(responses)
-        with self.assertRaises(face.RemoteError):
-          next(responses)
-
-  def testHalfDuplexCall(self):
-    with _CreateService() as (methods, stub):
-      def half_duplex_request_iterator():
-        request = request_pb2.StreamingOutputCallRequest()
-        request.response_parameters.add(size=1, interval_us=0)
-        yield request
-        request = request_pb2.StreamingOutputCallRequest()
-        request.response_parameters.add(size=2, interval_us=0)
-        request.response_parameters.add(size=3, interval_us=0)
-        yield request
-      responses = stub.HalfDuplexCall(
-          half_duplex_request_iterator(), test_constants.LONG_TIMEOUT)
-      expected_responses = methods.HalfDuplexCall(
-          half_duplex_request_iterator(), 'not a real RpcContext!')
-      for check in moves.zip_longest(expected_responses, responses):
-        expected_response, response = check
+    def testUnaryCallFutureExpired(self):
+        with _CreateService() as (methods, stub):
+            request = request_pb2.SimpleRequest(response_size=13)
+            with methods.pause():
+                response_future = stub.UnaryCall.future(
+                    request, test_constants.SHORT_TIMEOUT)
+                with self.assertRaises(face.ExpirationError):
+                    response_future.result()
+
+    def testUnaryCallFutureCancelled(self):
+        with _CreateService() as (methods, stub):
+            request = request_pb2.SimpleRequest(response_size=13)
+            with methods.pause():
+                response_future = stub.UnaryCall.future(request, 1)
+                response_future.cancel()
+                self.assertTrue(response_future.cancelled())
+
+    def testUnaryCallFutureFailed(self):
+        with _CreateService() as (methods, stub):
+            request = request_pb2.SimpleRequest(response_size=13)
+            with methods.fail():
+                response_future = stub.UnaryCall.future(
+                    request, test_constants.LONG_TIMEOUT)
+                self.assertIsNotNone(response_future.exception())
+
+    def testStreamingOutputCall(self):
+        with _CreateService() as (methods, stub):
+            request = _streaming_output_request()
+            responses = stub.StreamingOutputCall(request,
+                                                 test_constants.LONG_TIMEOUT)
+            expected_responses = methods.StreamingOutputCall(
+                request, 'not a real RpcContext!')
+            for expected_response, response in moves.zip_longest(
+                    expected_responses, responses):
+                self.assertEqual(expected_response, response)
+
+    def testStreamingOutputCallExpired(self):
+        with _CreateService() as (methods, stub):
+            request = _streaming_output_request()
+            with methods.pause():
+                responses = stub.StreamingOutputCall(
+                    request, test_constants.SHORT_TIMEOUT)
+                with self.assertRaises(face.ExpirationError):
+                    list(responses)
+
+    def testStreamingOutputCallCancelled(self):
+        with _CreateService() as (methods, stub):
+            request = _streaming_output_request()
+            responses = stub.StreamingOutputCall(request,
+                                                 test_constants.LONG_TIMEOUT)
+            next(responses)
+            responses.cancel()
+            with self.assertRaises(face.CancellationError):
+                next(responses)
+
+    def testStreamingOutputCallFailed(self):
+        with _CreateService() as (methods, stub):
+            request = _streaming_output_request()
+            with methods.fail():
+                responses = stub.StreamingOutputCall(request, 1)
+                self.assertIsNotNone(responses)
+                with self.assertRaises(face.RemoteError):
+                    next(responses)
+
+    def testStreamingInputCall(self):
+        with _CreateService() as (methods, stub):
+            response = stub.StreamingInputCall(
+                _streaming_input_request_iterator(),
+                test_constants.LONG_TIMEOUT)
+        expected_response = methods.StreamingInputCall(
+            _streaming_input_request_iterator(), 'not a real RpcContext!')
         self.assertEqual(expected_response, response)
 
-  def testHalfDuplexCallWedged(self):
-    condition = threading.Condition()
-    wait_cell = [False]
-    @contextlib.contextmanager
-    def wait():  # pylint: disable=invalid-name
-      # Where's Python 3's 'nonlocal' statement when you need it?
-      with condition:
-        wait_cell[0] = True
-      yield
-      with condition:
-        wait_cell[0] = False
-        condition.notify_all()
-    def half_duplex_request_iterator():
-      request = request_pb2.StreamingOutputCallRequest()
-      request.response_parameters.add(size=1, interval_us=0)
-      yield request
-      with condition:
-        while wait_cell[0]:
-          condition.wait()
-    with _CreateService() as (methods, stub):
-      with wait():
-        responses = stub.HalfDuplexCall(
-            half_duplex_request_iterator(), test_constants.SHORT_TIMEOUT)
-        # half-duplex waits for the client to send all info
-        with self.assertRaises(face.ExpirationError):
-          next(responses)
+    def testStreamingInputCallFuture(self):
+        with _CreateService() as (methods, stub):
+            with methods.pause():
+                response_future = stub.StreamingInputCall.future(
+                    _streaming_input_request_iterator(),
+                    test_constants.LONG_TIMEOUT)
+            response = response_future.result()
+        expected_response = methods.StreamingInputCall(
+            _streaming_input_request_iterator(), 'not a real RpcContext!')
+        self.assertEqual(expected_response, response)
+
+    def testStreamingInputCallFutureExpired(self):
+        with _CreateService() as (methods, stub):
+            with methods.pause():
+                response_future = stub.StreamingInputCall.future(
+                    _streaming_input_request_iterator(),
+                    test_constants.SHORT_TIMEOUT)
+                with self.assertRaises(face.ExpirationError):
+                    response_future.result()
+                self.assertIsInstance(response_future.exception(),
+                                      face.ExpirationError)
+
+    def testStreamingInputCallFutureCancelled(self):
+        with _CreateService() as (methods, stub):
+            with methods.pause():
+                response_future = stub.StreamingInputCall.future(
+                    _streaming_input_request_iterator(),
+                    test_constants.LONG_TIMEOUT)
+                response_future.cancel()
+                self.assertTrue(response_future.cancelled())
+            with self.assertRaises(future.CancelledError):
+                response_future.result()
+
+    def testStreamingInputCallFutureFailed(self):
+        with _CreateService() as (methods, stub):
+            with methods.fail():
+                response_future = stub.StreamingInputCall.future(
+                    _streaming_input_request_iterator(),
+                    test_constants.LONG_TIMEOUT)
+                self.assertIsNotNone(response_future.exception())
+
+    def testFullDuplexCall(self):
+        with _CreateService() as (methods, stub):
+            responses = stub.FullDuplexCall(_full_duplex_request_iterator(),
+                                            test_constants.LONG_TIMEOUT)
+            expected_responses = methods.FullDuplexCall(
+                _full_duplex_request_iterator(), 'not a real RpcContext!')
+            for expected_response, response in moves.zip_longest(
+                    expected_responses, responses):
+                self.assertEqual(expected_response, response)
+
+    def testFullDuplexCallExpired(self):
+        request_iterator = _full_duplex_request_iterator()
+        with _CreateService() as (methods, stub):
+            with methods.pause():
+                responses = stub.FullDuplexCall(request_iterator,
+                                                test_constants.SHORT_TIMEOUT)
+                with self.assertRaises(face.ExpirationError):
+                    list(responses)
+
+    def testFullDuplexCallCancelled(self):
+        with _CreateService() as (methods, stub):
+            request_iterator = _full_duplex_request_iterator()
+            responses = stub.FullDuplexCall(request_iterator,
+                                            test_constants.LONG_TIMEOUT)
+            next(responses)
+            responses.cancel()
+            with self.assertRaises(face.CancellationError):
+                next(responses)
+
+    def testFullDuplexCallFailed(self):
+        request_iterator = _full_duplex_request_iterator()
+        with _CreateService() as (methods, stub):
+            with methods.fail():
+                responses = stub.FullDuplexCall(request_iterator,
+                                                test_constants.LONG_TIMEOUT)
+                self.assertIsNotNone(responses)
+                with self.assertRaises(face.RemoteError):
+                    next(responses)
+
+    def testHalfDuplexCall(self):
+        with _CreateService() as (methods, stub):
+
+            def half_duplex_request_iterator():
+                request = request_pb2.StreamingOutputCallRequest()
+                request.response_parameters.add(size=1, interval_us=0)
+                yield request
+                request = request_pb2.StreamingOutputCallRequest()
+                request.response_parameters.add(size=2, interval_us=0)
+                request.response_parameters.add(size=3, interval_us=0)
+                yield request
+
+            responses = stub.HalfDuplexCall(half_duplex_request_iterator(),
+                                            test_constants.LONG_TIMEOUT)
+            expected_responses = methods.HalfDuplexCall(
+                half_duplex_request_iterator(), 'not a real RpcContext!')
+            for check in moves.zip_longest(expected_responses, responses):
+                expected_response, response = check
+                self.assertEqual(expected_response, response)
+
+    def testHalfDuplexCallWedged(self):
+        condition = threading.Condition()
+        wait_cell = [False]
+
+        @contextlib.contextmanager
+        def wait():  # pylint: disable=invalid-name
+            # Where's Python 3's 'nonlocal' statement when you need it?
+            with condition:
+                wait_cell[0] = True
+            yield
+            with condition:
+                wait_cell[0] = False
+                condition.notify_all()
+
+        def half_duplex_request_iterator():
+            request = request_pb2.StreamingOutputCallRequest()
+            request.response_parameters.add(size=1, interval_us=0)
+            yield request
+            with condition:
+                while wait_cell[0]:
+                    condition.wait()
+
+        with _CreateService() as (methods, stub):
+            with wait():
+                responses = stub.HalfDuplexCall(half_duplex_request_iterator(),
+                                                test_constants.SHORT_TIMEOUT)
+                # half-duplex waits for the client to send all info
+                with self.assertRaises(face.ExpirationError):
+                    next(responses)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/__init__.py
index 2f88fa04122d292e57bd1fa0da8d2a65dad35f61..100a624dc9c1bbd89708c58e18cf2666a73f4cc7 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/__init__.py
index 2f88fa04122d292e57bd1fa0da8d2a65dad35f61..100a624dc9c1bbd89708c58e18cf2666a73f4cc7 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_services/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_services/__init__.py
index 2f88fa04122d292e57bd1fa0da8d2a65dad35f61..100a624dc9c1bbd89708c58e18cf2666a73f4cc7 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_services/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_services/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/payload/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/payload/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/payload/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/payload/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/r/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/r/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/r/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/r/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/responses/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/responses/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/responses/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/responses/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/service/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/service/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/service/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/service/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/qps/benchmark_client.py b/src/python/grpcio_tests/tests/qps/benchmark_client.py
index 83b46c914e7f89d8d8966c29d573d69b6f310413..2e8afc8e7f9b480e0acb782e686e25939d85d6df 100644
--- a/src/python/grpcio_tests/tests/qps/benchmark_client.py
+++ b/src/python/grpcio_tests/tests/qps/benchmark_client.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Defines test client behaviors (UNARY/STREAMING) (SYNC/ASYNC)."""
 
 import abc
@@ -47,169 +46,168 @@ _TIMEOUT = 60 * 60 * 24
 
 class GenericStub(object):
 
-  def __init__(self, channel):
-    self.UnaryCall = channel.unary_unary(
-        '/grpc.testing.BenchmarkService/UnaryCall')
-    self.StreamingCall = channel.stream_stream(
-        '/grpc.testing.BenchmarkService/StreamingCall')
+    def __init__(self, channel):
+        self.UnaryCall = channel.unary_unary(
+            '/grpc.testing.BenchmarkService/UnaryCall')
+        self.StreamingCall = channel.stream_stream(
+            '/grpc.testing.BenchmarkService/StreamingCall')
 
 
 class BenchmarkClient:
-  """Benchmark client interface that exposes a non-blocking send_request()."""
-
-  __metaclass__ = abc.ABCMeta
-
-  def __init__(self, server, config, hist):
-    # Create the stub
-    if config.HasField('security_params'):
-      creds = grpc.ssl_channel_credentials(resources.test_root_certificates())
-      channel = test_common.test_secure_channel(
-        server, creds, config.security_params.server_host_override)
-    else:
-      channel = grpc.insecure_channel(server)
-
-    connected_event = threading.Event()
-    def wait_for_ready(connectivity):
-      if connectivity == grpc.ChannelConnectivity.READY:
-        connected_event.set()
-    channel.subscribe(wait_for_ready, try_to_connect=True)
-    connected_event.wait()
-
-    if config.payload_config.WhichOneof('payload') == 'simple_params':
-      self._generic = False
-      self._stub = services_pb2.BenchmarkServiceStub(channel)
-      payload = messages_pb2.Payload(
-          body='\0' * config.payload_config.simple_params.req_size)
-      self._request = messages_pb2.SimpleRequest(
-          payload=payload,
-          response_size=config.payload_config.simple_params.resp_size)
-    else:
-      self._generic = True
-      self._stub = GenericStub(channel)
-      self._request = '\0' * config.payload_config.bytebuf_params.req_size
-
-    self._hist = hist
-    self._response_callbacks = []
-
-  def add_response_callback(self, callback):
-    """callback will be invoked as callback(client, query_time)"""
-    self._response_callbacks.append(callback)
-
-  @abc.abstractmethod
-  def send_request(self):
-    """Non-blocking wrapper for a client's request operation."""
-    raise NotImplementedError()
-
-  def start(self):
-    pass
-
-  def stop(self):
-    pass
-
-  def _handle_response(self, client, query_time):
-    self._hist.add(query_time * 1e9)  # Report times in nanoseconds
-    for callback in self._response_callbacks:
-      callback(client, query_time)
+    """Benchmark client interface that exposes a non-blocking send_request()."""
+
+    __metaclass__ = abc.ABCMeta
+
+    def __init__(self, server, config, hist):
+        # Create the stub
+        if config.HasField('security_params'):
+            creds = grpc.ssl_channel_credentials(
+                resources.test_root_certificates())
+            channel = test_common.test_secure_channel(
+                server, creds, config.security_params.server_host_override)
+        else:
+            channel = grpc.insecure_channel(server)
+
+        # waits for the channel to be ready before we start sending messages
+        grpc.channel_ready_future(channel).result()
+
+        if config.payload_config.WhichOneof('payload') == 'simple_params':
+            self._generic = False
+            self._stub = services_pb2.BenchmarkServiceStub(channel)
+            payload = messages_pb2.Payload(
+                body='\0' * config.payload_config.simple_params.req_size)
+            self._request = messages_pb2.SimpleRequest(
+                payload=payload,
+                response_size=config.payload_config.simple_params.resp_size)
+        else:
+            self._generic = True
+            self._stub = GenericStub(channel)
+            self._request = '\0' * config.payload_config.bytebuf_params.req_size
+
+        self._hist = hist
+        self._response_callbacks = []
+
+    def add_response_callback(self, callback):
+        """callback will be invoked as callback(client, query_time)"""
+        self._response_callbacks.append(callback)
+
+    @abc.abstractmethod
+    def send_request(self):
+        """Non-blocking wrapper for a client's request operation."""
+        raise NotImplementedError()
+
+    def start(self):
+        pass
+
+    def stop(self):
+        pass
+
+    def _handle_response(self, client, query_time):
+        self._hist.add(query_time * 1e9)  # Report times in nanoseconds
+        for callback in self._response_callbacks:
+            callback(client, query_time)
 
 
 class UnarySyncBenchmarkClient(BenchmarkClient):
 
-  def __init__(self, server, config, hist):
-    super(UnarySyncBenchmarkClient, self).__init__(server, config, hist)
-    self._pool = futures.ThreadPoolExecutor(
-        max_workers=config.outstanding_rpcs_per_channel)
+    def __init__(self, server, config, hist):
+        super(UnarySyncBenchmarkClient, self).__init__(server, config, hist)
+        self._pool = futures.ThreadPoolExecutor(
+            max_workers=config.outstanding_rpcs_per_channel)
 
-  def send_request(self):
-    # Send requests in seperate threads to support multiple outstanding rpcs
-    # (See src/proto/grpc/testing/control.proto)
-    self._pool.submit(self._dispatch_request)
+    def send_request(self):
+        # Send requests in seperate threads to support multiple outstanding rpcs
+        # (See src/proto/grpc/testing/control.proto)
+        self._pool.submit(self._dispatch_request)
 
-  def stop(self):
-    self._pool.shutdown(wait=True)
-    self._stub = None
+    def stop(self):
+        self._pool.shutdown(wait=True)
+        self._stub = None
 
-  def _dispatch_request(self):
-    start_time = time.time()
-    self._stub.UnaryCall(self._request, _TIMEOUT)
-    end_time = time.time()
-    self._handle_response(self, end_time - start_time)
+    def _dispatch_request(self):
+        start_time = time.time()
+        self._stub.UnaryCall(self._request, _TIMEOUT)
+        end_time = time.time()
+        self._handle_response(self, end_time - start_time)
 
 
 class UnaryAsyncBenchmarkClient(BenchmarkClient):
 
-  def send_request(self):
-    # Use the Future callback api to support multiple outstanding rpcs
-    start_time = time.time()
-    response_future = self._stub.UnaryCall.future(self._request, _TIMEOUT)
-    response_future.add_done_callback(
-        lambda resp: self._response_received(start_time, resp))
+    def send_request(self):
+        # Use the Future callback api to support multiple outstanding rpcs
+        start_time = time.time()
+        response_future = self._stub.UnaryCall.future(self._request, _TIMEOUT)
+        response_future.add_done_callback(
+            lambda resp: self._response_received(start_time, resp))
 
-  def _response_received(self, start_time, resp):
-    resp.result()
-    end_time = time.time()
-    self._handle_response(self, end_time - start_time)
+    def _response_received(self, start_time, resp):
+        resp.result()
+        end_time = time.time()
+        self._handle_response(self, end_time - start_time)
 
-  def stop(self):
-    self._stub = None
+    def stop(self):
+        self._stub = None
 
 
 class _SyncStream(object):
 
-  def __init__(self, stub, generic, request, handle_response):
-    self._stub = stub
-    self._generic = generic
-    self._request = request
-    self._handle_response = handle_response
-    self._is_streaming = False
-    self._request_queue = queue.Queue()
-    self._send_time_queue = queue.Queue()
-
-  def send_request(self):
-    self._send_time_queue.put(time.time())
-    self._request_queue.put(self._request)
-
-  def start(self):
-    self._is_streaming = True
-    response_stream = self._stub.StreamingCall(
-        self._request_generator(), _TIMEOUT)
-    for _ in response_stream:
-      self._handle_response(
-          self, time.time() - self._send_time_queue.get_nowait())
-
-  def stop(self):
-    self._is_streaming = False
-
-  def _request_generator(self):
-    while self._is_streaming:
-      try:
-        request = self._request_queue.get(block=True, timeout=1.0)
-        yield request
-      except queue.Empty:
-        pass
+    def __init__(self, stub, generic, request, handle_response):
+        self._stub = stub
+        self._generic = generic
+        self._request = request
+        self._handle_response = handle_response
+        self._is_streaming = False
+        self._request_queue = queue.Queue()
+        self._send_time_queue = queue.Queue()
+
+    def send_request(self):
+        self._send_time_queue.put(time.time())
+        self._request_queue.put(self._request)
+
+    def start(self):
+        self._is_streaming = True
+        response_stream = self._stub.StreamingCall(self._request_generator(),
+                                                   _TIMEOUT)
+        for _ in response_stream:
+            self._handle_response(
+                self, time.time() - self._send_time_queue.get_nowait())
+
+    def stop(self):
+        self._is_streaming = False
+
+    def _request_generator(self):
+        while self._is_streaming:
+            try:
+                request = self._request_queue.get(block=True, timeout=1.0)
+                yield request
+            except queue.Empty:
+                pass
 
 
 class StreamingSyncBenchmarkClient(BenchmarkClient):
 
-  def __init__(self, server, config, hist):
-    super(StreamingSyncBenchmarkClient, self).__init__(server, config, hist)
-    self._pool = futures.ThreadPoolExecutor(
-        max_workers=config.outstanding_rpcs_per_channel)
-    self._streams = [_SyncStream(self._stub, self._generic, 
-                                 self._request, self._handle_response)
-                     for _ in xrange(config.outstanding_rpcs_per_channel)]
-    self._curr_stream = 0
-
-  def send_request(self):
-    # Use a round_robin scheduler to determine what stream to send on
-    self._streams[self._curr_stream].send_request()
-    self._curr_stream = (self._curr_stream + 1) % len(self._streams)
-
-  def start(self):
-    for stream in self._streams:
-      self._pool.submit(stream.start)
-
-  def stop(self):
-    for stream in self._streams:
-      stream.stop()
-    self._pool.shutdown(wait=True)
-    self._stub = None
+    def __init__(self, server, config, hist):
+        super(StreamingSyncBenchmarkClient, self).__init__(server, config, hist)
+        self._pool = futures.ThreadPoolExecutor(
+            max_workers=config.outstanding_rpcs_per_channel)
+        self._streams = [
+            _SyncStream(self._stub, self._generic, self._request,
+                        self._handle_response)
+            for _ in xrange(config.outstanding_rpcs_per_channel)
+        ]
+        self._curr_stream = 0
+
+    def send_request(self):
+        # Use a round_robin scheduler to determine what stream to send on
+        self._streams[self._curr_stream].send_request()
+        self._curr_stream = (self._curr_stream + 1) % len(self._streams)
+
+    def start(self):
+        for stream in self._streams:
+            self._pool.submit(stream.start)
+
+    def stop(self):
+        for stream in self._streams:
+            stream.stop()
+        self._pool.shutdown(wait=True)
+        self._stub = None
diff --git a/src/python/grpcio_tests/tests/qps/benchmark_server.py b/src/python/grpcio_tests/tests/qps/benchmark_server.py
index 2b76b810cdd869dff0f221c50b60a7d42867c27a..423d03b804263dd6bb64e093854b91365c73128e 100644
--- a/src/python/grpcio_tests/tests/qps/benchmark_server.py
+++ b/src/python/grpcio_tests/tests/qps/benchmark_server.py
@@ -32,27 +32,27 @@ from src.proto.grpc.testing import services_pb2
 
 
 class BenchmarkServer(services_pb2.BenchmarkServiceServicer):
-  """Synchronous Server implementation for the Benchmark service."""
+    """Synchronous Server implementation for the Benchmark service."""
 
-  def UnaryCall(self, request, context):
-    payload = messages_pb2.Payload(body='\0' * request.response_size)
-    return messages_pb2.SimpleResponse(payload=payload)
+    def UnaryCall(self, request, context):
+        payload = messages_pb2.Payload(body='\0' * request.response_size)
+        return messages_pb2.SimpleResponse(payload=payload)
 
-  def StreamingCall(self, request_iterator, context):
-    for request in request_iterator:
-      payload = messages_pb2.Payload(body='\0' * request.response_size)
-      yield messages_pb2.SimpleResponse(payload=payload)
+    def StreamingCall(self, request_iterator, context):
+        for request in request_iterator:
+            payload = messages_pb2.Payload(body='\0' * request.response_size)
+            yield messages_pb2.SimpleResponse(payload=payload)
 
 
 class GenericBenchmarkServer(services_pb2.BenchmarkServiceServicer):
-  """Generic Server implementation for the Benchmark service."""
+    """Generic Server implementation for the Benchmark service."""
 
-  def __init__(self, resp_size):
-    self._response = '\0' * resp_size
+    def __init__(self, resp_size):
+        self._response = '\0' * resp_size
 
-  def UnaryCall(self, request, context):
-    return self._response
+    def UnaryCall(self, request, context):
+        return self._response
 
-  def StreamingCall(self, request_iterator, context):
-    for request in request_iterator:
-      yield self._response
+    def StreamingCall(self, request_iterator, context):
+        for request in request_iterator:
+            yield self._response
diff --git a/src/python/grpcio_tests/tests/qps/client_runner.py b/src/python/grpcio_tests/tests/qps/client_runner.py
index 1fd58687ad4bf13f898422fc573198b0fa7d82d9..037092313c16d6445684d81f173678b27fecb8bf 100644
--- a/src/python/grpcio_tests/tests/qps/client_runner.py
+++ b/src/python/grpcio_tests/tests/qps/client_runner.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Defines behavior for WHEN clients send requests.
 
 Each client exposes a non-blocking send_request() method that the
@@ -39,68 +38,68 @@ import time
 
 
 class ClientRunner:
-  """Abstract interface for sending requests from clients."""
+    """Abstract interface for sending requests from clients."""
 
-  __metaclass__ = abc.ABCMeta
+    __metaclass__ = abc.ABCMeta
 
-  def __init__(self, client):
-    self._client = client
+    def __init__(self, client):
+        self._client = client
 
-  @abc.abstractmethod
-  def start(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def start(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stop(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def stop(self):
+        raise NotImplementedError()
 
 
 class OpenLoopClientRunner(ClientRunner):
 
-  def __init__(self, client, interval_generator):
-    super(OpenLoopClientRunner, self).__init__(client)
-    self._is_running = False
-    self._interval_generator = interval_generator
-    self._dispatch_thread = threading.Thread(
-        target=self._dispatch_requests, args=())
-
-  def start(self):
-    self._is_running = True
-    self._client.start()
-    self._dispatch_thread.start()
-   
-  def stop(self):
-    self._is_running = False
-    self._client.stop()
-    self._dispatch_thread.join()
-    self._client = None
-
-  def _dispatch_requests(self):
-    while self._is_running:
-      self._client.send_request()
-      time.sleep(next(self._interval_generator))
+    def __init__(self, client, interval_generator):
+        super(OpenLoopClientRunner, self).__init__(client)
+        self._is_running = False
+        self._interval_generator = interval_generator
+        self._dispatch_thread = threading.Thread(
+            target=self._dispatch_requests, args=())
+
+    def start(self):
+        self._is_running = True
+        self._client.start()
+        self._dispatch_thread.start()
+
+    def stop(self):
+        self._is_running = False
+        self._client.stop()
+        self._dispatch_thread.join()
+        self._client = None
+
+    def _dispatch_requests(self):
+        while self._is_running:
+            self._client.send_request()
+            time.sleep(next(self._interval_generator))
 
 
 class ClosedLoopClientRunner(ClientRunner):
 
-  def __init__(self, client, request_count):
-    super(ClosedLoopClientRunner, self).__init__(client)
-    self._is_running = False
-    self._request_count = request_count
-    # Send a new request on each response for closed loop
-    self._client.add_response_callback(self._send_request)
-
-  def start(self):
-    self._is_running = True
-    self._client.start()
-    for _ in xrange(self._request_count):
-      self._client.send_request()
-
-  def stop(self):
-    self._is_running = False
-    self._client.stop()
-    self._client = None
-
-  def _send_request(self, client, response_time):
-    if self._is_running:
-      client.send_request()
+    def __init__(self, client, request_count):
+        super(ClosedLoopClientRunner, self).__init__(client)
+        self._is_running = False
+        self._request_count = request_count
+        # Send a new request on each response for closed loop
+        self._client.add_response_callback(self._send_request)
+
+    def start(self):
+        self._is_running = True
+        self._client.start()
+        for _ in xrange(self._request_count):
+            self._client.send_request()
+
+    def stop(self):
+        self._is_running = False
+        self._client.stop()
+        self._client = None
+
+    def _send_request(self, client, response_time):
+        if self._is_running:
+            client.send_request()
diff --git a/src/python/grpcio_tests/tests/qps/histogram.py b/src/python/grpcio_tests/tests/qps/histogram.py
index 9a7b5eb2ba622059245b26aeee54f56eced21630..61040b6f3bfea59e17b9e3376a9e5c17d4a7cf0f 100644
--- a/src/python/grpcio_tests/tests/qps/histogram.py
+++ b/src/python/grpcio_tests/tests/qps/histogram.py
@@ -34,52 +34,52 @@ from src.proto.grpc.testing import stats_pb2
 
 
 class Histogram(object):
-  """Histogram class used for recording performance testing data.
+    """Histogram class used for recording performance testing data.
 
   This class is thread safe.
   """
 
-  def __init__(self, resolution, max_possible):
-    self._lock = threading.Lock()
-    self._resolution = resolution
-    self._max_possible = max_possible
-    self._sum = 0
-    self._sum_of_squares = 0
-    self.multiplier = 1.0 + self._resolution
-    self._count = 0
-    self._min = self._max_possible
-    self._max = 0
-    self._buckets = [0] * (self._bucket_for(self._max_possible) + 1)
+    def __init__(self, resolution, max_possible):
+        self._lock = threading.Lock()
+        self._resolution = resolution
+        self._max_possible = max_possible
+        self._sum = 0
+        self._sum_of_squares = 0
+        self.multiplier = 1.0 + self._resolution
+        self._count = 0
+        self._min = self._max_possible
+        self._max = 0
+        self._buckets = [0] * (self._bucket_for(self._max_possible) + 1)
 
-  def reset(self):
-    with self._lock:
-      self._sum = 0
-      self._sum_of_squares = 0
-      self._count = 0
-      self._min = self._max_possible
-      self._max = 0
-      self._buckets = [0] * (self._bucket_for(self._max_possible) + 1)
+    def reset(self):
+        with self._lock:
+            self._sum = 0
+            self._sum_of_squares = 0
+            self._count = 0
+            self._min = self._max_possible
+            self._max = 0
+            self._buckets = [0] * (self._bucket_for(self._max_possible) + 1)
 
-  def add(self, val):
-    with self._lock:
-      self._sum += val
-      self._sum_of_squares += val * val
-      self._count += 1
-      self._min = min(self._min, val)
-      self._max = max(self._max, val)
-      self._buckets[self._bucket_for(val)] += 1
+    def add(self, val):
+        with self._lock:
+            self._sum += val
+            self._sum_of_squares += val * val
+            self._count += 1
+            self._min = min(self._min, val)
+            self._max = max(self._max, val)
+            self._buckets[self._bucket_for(val)] += 1
 
-  def get_data(self):
-    with self._lock:
-      data = stats_pb2.HistogramData()
-      data.bucket.extend(self._buckets)
-      data.min_seen = self._min
-      data.max_seen = self._max
-      data.sum = self._sum
-      data.sum_of_squares = self._sum_of_squares
-      data.count = self._count
-      return data
+    def get_data(self):
+        with self._lock:
+            data = stats_pb2.HistogramData()
+            data.bucket.extend(self._buckets)
+            data.min_seen = self._min
+            data.max_seen = self._max
+            data.sum = self._sum
+            data.sum_of_squares = self._sum_of_squares
+            data.count = self._count
+            return data
 
-  def _bucket_for(self, val):
-    val = min(val, self._max_possible)
-    return int(math.log(val, self.multiplier))
+    def _bucket_for(self, val):
+        val = min(val, self._max_possible)
+        return int(math.log(val, self.multiplier))
diff --git a/src/python/grpcio_tests/tests/qps/qps_worker.py b/src/python/grpcio_tests/tests/qps/qps_worker.py
index 2371ff095627cf19e96cec2618a3c3b8e4092559..025dfb9d4a7a933d10f98cda0bef43436b6046ba 100644
--- a/src/python/grpcio_tests/tests/qps/qps_worker.py
+++ b/src/python/grpcio_tests/tests/qps/qps_worker.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """The entry point for the qps worker."""
 
 import argparse
@@ -40,22 +39,23 @@ from tests.qps import worker_server
 
 
 def run_worker_server(port):
-  server = grpc.server(futures.ThreadPoolExecutor(max_workers=5))
-  servicer = worker_server.WorkerServer()
-  services_pb2.add_WorkerServiceServicer_to_server(servicer, server)
-  server.add_insecure_port('[::]:{}'.format(port))
-  server.start()
-  servicer.wait_for_quit()
-  server.stop(0)
+    server = grpc.server(futures.ThreadPoolExecutor(max_workers=5))
+    servicer = worker_server.WorkerServer()
+    services_pb2.add_WorkerServiceServicer_to_server(servicer, server)
+    server.add_insecure_port('[::]:{}'.format(port))
+    server.start()
+    servicer.wait_for_quit()
+    server.stop(0)
 
 
 if __name__ == '__main__':
-  parser = argparse.ArgumentParser(
-      description='gRPC Python performance testing worker')
-  parser.add_argument('--driver_port',
-                      type=int,
-                      dest='port',
-                      help='The port the worker should listen on')
-  args = parser.parse_args()
-
-  run_worker_server(args.port)
+    parser = argparse.ArgumentParser(
+        description='gRPC Python performance testing worker')
+    parser.add_argument(
+        '--driver_port',
+        type=int,
+        dest='port',
+        help='The port the worker should listen on')
+    args = parser.parse_args()
+
+    run_worker_server(args.port)
diff --git a/src/python/grpcio_tests/tests/qps/worker_server.py b/src/python/grpcio_tests/tests/qps/worker_server.py
index 46d542940f1079b049ddb783f2e48d2a6cb8d519..1deb7ed698c7d6fbe4414d5c3077c02b7424a70b 100644
--- a/src/python/grpcio_tests/tests/qps/worker_server.py
+++ b/src/python/grpcio_tests/tests/qps/worker_server.py
@@ -46,149 +46,156 @@ from tests.unit import resources
 
 
 class WorkerServer(services_pb2.WorkerServiceServicer):
-  """Python Worker Server implementation."""
-
-  def __init__(self):
-    self._quit_event = threading.Event()
-
-  def RunServer(self, request_iterator, context):
-    config = next(request_iterator).setup
-    server, port = self._create_server(config)
-    cores = multiprocessing.cpu_count()
-    server.start()
-    start_time = time.time()
-    yield self._get_server_status(start_time, start_time, port, cores)
-
-    for request in request_iterator:
-      end_time = time.time()
-      status = self._get_server_status(start_time, end_time, port, cores)
-      if request.mark.reset:
-        start_time = end_time
-      yield status
-    server.stop(None)
-
-  def _get_server_status(self, start_time, end_time, port, cores):
-    end_time = time.time()
-    elapsed_time = end_time - start_time
-    stats = stats_pb2.ServerStats(time_elapsed=elapsed_time,
-                                  time_user=elapsed_time,
-                                  time_system=elapsed_time)
-    return control_pb2.ServerStatus(stats=stats, port=port, cores=cores)
-
-  def _create_server(self, config):
-    if config.async_server_threads == 0:
-      # This is the default concurrent.futures thread pool size, but
-      # None doesn't seem to work
-      server_threads = multiprocessing.cpu_count() * 5
-    else:
-      server_threads = config.async_server_threads
-    server = grpc.server(futures.ThreadPoolExecutor(
-        max_workers=server_threads))
-    if config.server_type == control_pb2.ASYNC_SERVER:
-      servicer = benchmark_server.BenchmarkServer()
-      services_pb2.add_BenchmarkServiceServicer_to_server(servicer, server)
-    elif config.server_type == control_pb2.ASYNC_GENERIC_SERVER:
-      resp_size = config.payload_config.bytebuf_params.resp_size
-      servicer = benchmark_server.GenericBenchmarkServer(resp_size)
-      method_implementations = {
-          'StreamingCall':
-          grpc.stream_stream_rpc_method_handler(servicer.StreamingCall),
-          'UnaryCall':
-          grpc.unary_unary_rpc_method_handler(servicer.UnaryCall),
-      }
-      handler = grpc.method_handlers_generic_handler(
-          'grpc.testing.BenchmarkService', method_implementations)
-      server.add_generic_rpc_handlers((handler,))
-    else:
-      raise Exception('Unsupported server type {}'.format(config.server_type))
-
-    if config.HasField('security_params'):  # Use SSL
-      server_creds = grpc.ssl_server_credentials(
-          ((resources.private_key(), resources.certificate_chain()),))
-      port = server.add_secure_port('[::]:{}'.format(config.port), server_creds)
-    else:
-      port = server.add_insecure_port('[::]:{}'.format(config.port))
-
-    return (server, port)
-
-  def RunClient(self, request_iterator, context):
-    config = next(request_iterator).setup
-    client_runners = []
-    qps_data = histogram.Histogram(config.histogram_params.resolution,
-                                   config.histogram_params.max_possible)
-    start_time = time.time()
-
-    # Create a client for each channel
-    for i in xrange(config.client_channels):
-      server = config.server_targets[i % len(config.server_targets)]
-      runner = self._create_client_runner(server, config, qps_data)
-      client_runners.append(runner)
-      runner.start()
-
-    end_time = time.time()
-    yield self._get_client_status(start_time, end_time, qps_data)
-
-    # Respond to stat requests
-    for request in request_iterator:
-      end_time = time.time()
-      status = self._get_client_status(start_time, end_time, qps_data)
-      if request.mark.reset:
-        qps_data.reset()
+    """Python Worker Server implementation."""
+
+    def __init__(self):
+        self._quit_event = threading.Event()
+
+    def RunServer(self, request_iterator, context):
+        config = next(request_iterator).setup
+        server, port = self._create_server(config)
+        cores = multiprocessing.cpu_count()
+        server.start()
         start_time = time.time()
-      yield status
-
-    # Cleanup the clients
-    for runner in client_runners:
-      runner.stop()
-
-  def _get_client_status(self, start_time, end_time, qps_data):
-    latencies = qps_data.get_data()
-    end_time = time.time()
-    elapsed_time = end_time - start_time
-    stats = stats_pb2.ClientStats(latencies=latencies,
-                                  time_elapsed=elapsed_time,
-                                  time_user=elapsed_time,
-                                  time_system=elapsed_time)
-    return control_pb2.ClientStatus(stats=stats)
-
-  def _create_client_runner(self, server, config, qps_data):
-    if config.client_type == control_pb2.SYNC_CLIENT:
-      if config.rpc_type == control_pb2.UNARY:
-        client = benchmark_client.UnarySyncBenchmarkClient(
-            server, config, qps_data)
-      elif config.rpc_type == control_pb2.STREAMING:
-        client = benchmark_client.StreamingSyncBenchmarkClient(
-            server, config, qps_data)
-    elif config.client_type == control_pb2.ASYNC_CLIENT:
-      if config.rpc_type == control_pb2.UNARY:
-        client = benchmark_client.UnaryAsyncBenchmarkClient(
-            server, config, qps_data)
-      else:
-        raise Exception('Async streaming client not supported')
-    else:
-      raise Exception('Unsupported client type {}'.format(config.client_type))
-
-    # In multi-channel tests, we split the load across all channels
-    load_factor = float(config.client_channels)
-    if config.load_params.WhichOneof('load') == 'closed_loop':
-      runner = client_runner.ClosedLoopClientRunner(
-          client, config.outstanding_rpcs_per_channel)
-    else:  # Open loop Poisson
-      alpha = config.load_params.poisson.offered_load / load_factor
-      def poisson():
-        while True:
-          yield random.expovariate(alpha)
-
-      runner = client_runner.OpenLoopClientRunner(client, poisson())
-
-    return runner
-
-  def CoreCount(self, request, context):
-    return control_pb2.CoreResponse(cores=multiprocessing.cpu_count())
-
-  def QuitWorker(self, request, context):
-    self._quit_event.set()
-    return control_pb2.Void()
-
-  def wait_for_quit(self):
-    self._quit_event.wait()
+        yield self._get_server_status(start_time, start_time, port, cores)
+
+        for request in request_iterator:
+            end_time = time.time()
+            status = self._get_server_status(start_time, end_time, port, cores)
+            if request.mark.reset:
+                start_time = end_time
+            yield status
+        server.stop(None)
+
+    def _get_server_status(self, start_time, end_time, port, cores):
+        end_time = time.time()
+        elapsed_time = end_time - start_time
+        stats = stats_pb2.ServerStats(
+            time_elapsed=elapsed_time,
+            time_user=elapsed_time,
+            time_system=elapsed_time)
+        return control_pb2.ServerStatus(stats=stats, port=port, cores=cores)
+
+    def _create_server(self, config):
+        if config.async_server_threads == 0:
+            # This is the default concurrent.futures thread pool size, but
+            # None doesn't seem to work
+            server_threads = multiprocessing.cpu_count() * 5
+        else:
+            server_threads = config.async_server_threads
+        server = grpc.server(
+            futures.ThreadPoolExecutor(max_workers=server_threads))
+        if config.server_type == control_pb2.ASYNC_SERVER:
+            servicer = benchmark_server.BenchmarkServer()
+            services_pb2.add_BenchmarkServiceServicer_to_server(servicer,
+                                                                server)
+        elif config.server_type == control_pb2.ASYNC_GENERIC_SERVER:
+            resp_size = config.payload_config.bytebuf_params.resp_size
+            servicer = benchmark_server.GenericBenchmarkServer(resp_size)
+            method_implementations = {
+                'StreamingCall':
+                grpc.stream_stream_rpc_method_handler(servicer.StreamingCall),
+                'UnaryCall':
+                grpc.unary_unary_rpc_method_handler(servicer.UnaryCall),
+            }
+            handler = grpc.method_handlers_generic_handler(
+                'grpc.testing.BenchmarkService', method_implementations)
+            server.add_generic_rpc_handlers((handler,))
+        else:
+            raise Exception('Unsupported server type {}'.format(
+                config.server_type))
+
+        if config.HasField('security_params'):  # Use SSL
+            server_creds = grpc.ssl_server_credentials((
+                (resources.private_key(), resources.certificate_chain()),))
+            port = server.add_secure_port('[::]:{}'.format(config.port),
+                                          server_creds)
+        else:
+            port = server.add_insecure_port('[::]:{}'.format(config.port))
+
+        return (server, port)
+
+    def RunClient(self, request_iterator, context):
+        config = next(request_iterator).setup
+        client_runners = []
+        qps_data = histogram.Histogram(config.histogram_params.resolution,
+                                       config.histogram_params.max_possible)
+        start_time = time.time()
+
+        # Create a client for each channel
+        for i in xrange(config.client_channels):
+            server = config.server_targets[i % len(config.server_targets)]
+            runner = self._create_client_runner(server, config, qps_data)
+            client_runners.append(runner)
+            runner.start()
+
+        end_time = time.time()
+        yield self._get_client_status(start_time, end_time, qps_data)
+
+        # Respond to stat requests
+        for request in request_iterator:
+            end_time = time.time()
+            status = self._get_client_status(start_time, end_time, qps_data)
+            if request.mark.reset:
+                qps_data.reset()
+                start_time = time.time()
+            yield status
+
+        # Cleanup the clients
+        for runner in client_runners:
+            runner.stop()
+
+    def _get_client_status(self, start_time, end_time, qps_data):
+        latencies = qps_data.get_data()
+        end_time = time.time()
+        elapsed_time = end_time - start_time
+        stats = stats_pb2.ClientStats(
+            latencies=latencies,
+            time_elapsed=elapsed_time,
+            time_user=elapsed_time,
+            time_system=elapsed_time)
+        return control_pb2.ClientStatus(stats=stats)
+
+    def _create_client_runner(self, server, config, qps_data):
+        if config.client_type == control_pb2.SYNC_CLIENT:
+            if config.rpc_type == control_pb2.UNARY:
+                client = benchmark_client.UnarySyncBenchmarkClient(
+                    server, config, qps_data)
+            elif config.rpc_type == control_pb2.STREAMING:
+                client = benchmark_client.StreamingSyncBenchmarkClient(
+                    server, config, qps_data)
+        elif config.client_type == control_pb2.ASYNC_CLIENT:
+            if config.rpc_type == control_pb2.UNARY:
+                client = benchmark_client.UnaryAsyncBenchmarkClient(
+                    server, config, qps_data)
+            else:
+                raise Exception('Async streaming client not supported')
+        else:
+            raise Exception('Unsupported client type {}'.format(
+                config.client_type))
+
+        # In multi-channel tests, we split the load across all channels
+        load_factor = float(config.client_channels)
+        if config.load_params.WhichOneof('load') == 'closed_loop':
+            runner = client_runner.ClosedLoopClientRunner(
+                client, config.outstanding_rpcs_per_channel)
+        else:  # Open loop Poisson
+            alpha = config.load_params.poisson.offered_load / load_factor
+
+            def poisson():
+                while True:
+                    yield random.expovariate(alpha)
+
+            runner = client_runner.OpenLoopClientRunner(client, poisson())
+
+        return runner
+
+    def CoreCount(self, request, context):
+        return control_pb2.CoreResponse(cores=multiprocessing.cpu_count())
+
+    def QuitWorker(self, request, context):
+        self._quit_event.set()
+        return control_pb2.Void()
+
+    def wait_for_quit(self):
+        self._quit_event.wait()
diff --git a/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py b/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py
index c7bfeaeb959c57d7f5c62324f3c06149a148be98..76e89ca039f9e0f8aca28a9c2df3368222a63595 100644
--- a/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py
+++ b/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of grpc_reflection.v1alpha.reflection."""
 
 import unittest
@@ -45,141 +44,112 @@ from tests.unit.framework.common import test_constants
 
 _EMPTY_PROTO_FILE_NAME = 'src/proto/grpc/testing/empty.proto'
 _EMPTY_PROTO_SYMBOL_NAME = 'grpc.testing.Empty'
-_SERVICE_NAMES = (
-    'Angstrom', 'Bohr', 'Curie', 'Dyson', 'Einstein', 'Feynman', 'Galilei')
+_SERVICE_NAMES = ('Angstrom', 'Bohr', 'Curie', 'Dyson', 'Einstein', 'Feynman',
+                  'Galilei')
+
 
 def _file_descriptor_to_proto(descriptor):
-  proto = descriptor_pb2.FileDescriptorProto()
-  descriptor.CopyToProto(proto)
-  return proto.SerializeToString()
+    proto = descriptor_pb2.FileDescriptorProto()
+    descriptor.CopyToProto(proto)
+    return proto.SerializeToString()
+
 
 class ReflectionServicerTest(unittest.TestCase):
 
-  def setUp(self):
-    servicer = reflection.ReflectionServicer(service_names=_SERVICE_NAMES)
-    server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    self._server = grpc.server(server_pool)
-    port = self._server.add_insecure_port('[::]:0')
-    reflection_pb2.add_ServerReflectionServicer_to_server(servicer, self._server)
-    self._server.start()
-
-    channel = grpc.insecure_channel('localhost:%d' % port)
-    self._stub = reflection_pb2.ServerReflectionStub(channel)
-
-  def testFileByName(self):
-    requests = (
-      reflection_pb2.ServerReflectionRequest(
-        file_by_filename=_EMPTY_PROTO_FILE_NAME
-      ),
-      reflection_pb2.ServerReflectionRequest(
-        file_by_filename='i-donut-exist'
-      ),
-    )
-    responses = tuple(self._stub.ServerReflectionInfo(requests))
-    expected_responses = (
-      reflection_pb2.ServerReflectionResponse(
-        valid_host='',
-        file_descriptor_response=reflection_pb2.FileDescriptorResponse(
-          file_descriptor_proto=(
-            _file_descriptor_to_proto(empty_pb2.DESCRIPTOR),
-          )
-        )
-      ),
-      reflection_pb2.ServerReflectionResponse(
-        valid_host='',
-        error_response=reflection_pb2.ErrorResponse(
-          error_code=grpc.StatusCode.NOT_FOUND.value[0],
-          error_message=grpc.StatusCode.NOT_FOUND.value[1].encode(),
-        )
-      ),
-    )
-    self.assertEqual(expected_responses, responses)
-
-  def testFileBySymbol(self):
-    requests = (
-      reflection_pb2.ServerReflectionRequest(
-        file_containing_symbol=_EMPTY_PROTO_SYMBOL_NAME
-      ),
-      reflection_pb2.ServerReflectionRequest(
-        file_containing_symbol='i.donut.exist.co.uk.org.net.me.name.foo'
-      ),
-    )
-    responses = tuple(self._stub.ServerReflectionInfo(requests))
-    expected_responses = (
-      reflection_pb2.ServerReflectionResponse(
-        valid_host='',
-        file_descriptor_response=reflection_pb2.FileDescriptorResponse(
-          file_descriptor_proto=(
-            _file_descriptor_to_proto(empty_pb2.DESCRIPTOR),
-          )
-        )
-      ),
-      reflection_pb2.ServerReflectionResponse(
-        valid_host='',
-        error_response=reflection_pb2.ErrorResponse(
-          error_code=grpc.StatusCode.NOT_FOUND.value[0],
-          error_message=grpc.StatusCode.NOT_FOUND.value[1].encode(),
-        )
-      ),
-    )
-    self.assertEqual(expected_responses, responses)
-
-  @unittest.skip('TODO(atash): implement file-containing-extension reflection '
-                 '(see https://github.com/google/protobuf/issues/2248)')
-  def testFileContainingExtension(self):
-    requests = (
-      reflection_pb2.ServerReflectionRequest(
-        file_containing_extension=reflection_pb2.ExtensionRequest(
-          containing_type='grpc.testing.proto2.Empty',
-          extension_number=125,
-        ),
-      ),
-      reflection_pb2.ServerReflectionRequest(
-        file_containing_extension=reflection_pb2.ExtensionRequest(
-          containing_type='i.donut.exist.co.uk.org.net.me.name.foo',
-          extension_number=55,
-        ),
-      ),
-    )
-    responses = tuple(self._stub.ServerReflectionInfo(requests))
-    expected_responses = (
-      reflection_pb2.ServerReflectionResponse(
-        valid_host='',
-        file_descriptor_response=reflection_pb2.FileDescriptorResponse(
-          file_descriptor_proto=(
-            _file_descriptor_to_proto(empty_extensions_pb2.DESCRIPTOR),
-          )
-        )
-      ),
-      reflection_pb2.ServerReflectionResponse(
-        valid_host='',
-        error_response=reflection_pb2.ErrorResponse(
-          error_code=grpc.StatusCode.NOT_FOUND.value[0],
-          error_message=grpc.StatusCode.NOT_FOUND.value[1].encode(),
-        )
-      ),
-    )
-    self.assertEqual(expected_responses, responses)
-
-  def testListServices(self):
-    requests = (
-      reflection_pb2.ServerReflectionRequest(
-        list_services='',
-      ),
-    )
-    responses = tuple(self._stub.ServerReflectionInfo(requests))
-    expected_responses = (
-      reflection_pb2.ServerReflectionResponse(
-        valid_host='',
-        list_services_response=reflection_pb2.ListServiceResponse(
-          service=tuple(
-            reflection_pb2.ServiceResponse(name=name)
-            for name in _SERVICE_NAMES
-          )
-        )
-      ),
-    )
-    self.assertEqual(expected_responses, responses)
+    def setUp(self):
+        servicer = reflection.ReflectionServicer(service_names=_SERVICE_NAMES)
+        server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        self._server = grpc.server(server_pool)
+        port = self._server.add_insecure_port('[::]:0')
+        reflection_pb2.add_ServerReflectionServicer_to_server(servicer,
+                                                              self._server)
+        self._server.start()
+
+        channel = grpc.insecure_channel('localhost:%d' % port)
+        self._stub = reflection_pb2.ServerReflectionStub(channel)
+
+    def testFileByName(self):
+        requests = (
+            reflection_pb2.ServerReflectionRequest(
+                file_by_filename=_EMPTY_PROTO_FILE_NAME),
+            reflection_pb2.ServerReflectionRequest(
+                file_by_filename='i-donut-exist'),)
+        responses = tuple(self._stub.ServerReflectionInfo(iter(requests)))
+        expected_responses = (
+            reflection_pb2.ServerReflectionResponse(
+                valid_host='',
+                file_descriptor_response=reflection_pb2.FileDescriptorResponse(
+                    file_descriptor_proto=(
+                        _file_descriptor_to_proto(empty_pb2.DESCRIPTOR),))),
+            reflection_pb2.ServerReflectionResponse(
+                valid_host='',
+                error_response=reflection_pb2.ErrorResponse(
+                    error_code=grpc.StatusCode.NOT_FOUND.value[0],
+                    error_message=grpc.StatusCode.NOT_FOUND.value[1].encode(),
+                )),)
+        self.assertSequenceEqual(expected_responses, responses)
+
+    def testFileBySymbol(self):
+        requests = (
+            reflection_pb2.ServerReflectionRequest(
+                file_containing_symbol=_EMPTY_PROTO_SYMBOL_NAME),
+            reflection_pb2.ServerReflectionRequest(
+                file_containing_symbol='i.donut.exist.co.uk.org.net.me.name.foo'
+            ),)
+        responses = tuple(self._stub.ServerReflectionInfo(iter(requests)))
+        expected_responses = (
+            reflection_pb2.ServerReflectionResponse(
+                valid_host='',
+                file_descriptor_response=reflection_pb2.FileDescriptorResponse(
+                    file_descriptor_proto=(
+                        _file_descriptor_to_proto(empty_pb2.DESCRIPTOR),))),
+            reflection_pb2.ServerReflectionResponse(
+                valid_host='',
+                error_response=reflection_pb2.ErrorResponse(
+                    error_code=grpc.StatusCode.NOT_FOUND.value[0],
+                    error_message=grpc.StatusCode.NOT_FOUND.value[1].encode(),
+                )),)
+        self.assertSequenceEqual(expected_responses, responses)
+
+    @unittest.skip(
+        'TODO(atash): implement file-containing-extension reflection '
+        '(see https://github.com/google/protobuf/issues/2248)')
+    def testFileContainingExtension(self):
+        requests = (
+            reflection_pb2.ServerReflectionRequest(
+                file_containing_extension=reflection_pb2.ExtensionRequest(
+                    containing_type='grpc.testing.proto2.Empty',
+                    extension_number=125,),),
+            reflection_pb2.ServerReflectionRequest(
+                file_containing_extension=reflection_pb2.ExtensionRequest(
+                    containing_type='i.donut.exist.co.uk.org.net.me.name.foo',
+                    extension_number=55,),),)
+        responses = tuple(self._stub.ServerReflectionInfo(iter(requests)))
+        expected_responses = (
+            reflection_pb2.ServerReflectionResponse(
+                valid_host='',
+                file_descriptor_response=reflection_pb2.FileDescriptorResponse(
+                    file_descriptor_proto=(_file_descriptor_to_proto(
+                        empty_extensions_pb2.DESCRIPTOR),))),
+            reflection_pb2.ServerReflectionResponse(
+                valid_host='',
+                error_response=reflection_pb2.ErrorResponse(
+                    error_code=grpc.StatusCode.NOT_FOUND.value[0],
+                    error_message=grpc.StatusCode.NOT_FOUND.value[1].encode(),
+                )),)
+        self.assertSequenceEqual(expected_responses, responses)
+
+    def testListServices(self):
+        requests = (reflection_pb2.ServerReflectionRequest(list_services='',),)
+        responses = tuple(self._stub.ServerReflectionInfo(iter(requests)))
+        expected_responses = (reflection_pb2.ServerReflectionResponse(
+            valid_host='',
+            list_services_response=reflection_pb2.ListServiceResponse(
+                service=tuple(
+                    reflection_pb2.ServiceResponse(name=name)
+                    for name in _SERVICE_NAMES))),)
+        self.assertSequenceEqual(expected_responses, responses)
+
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/stress/client.py b/src/python/grpcio_tests/tests/stress/client.py
index 390ea13021d1a37013230330c61b9dfd911a2e9a..61f9e1c6b17446ed27db38ca62930dbe5313056b 100644
--- a/src/python/grpcio_tests/tests/stress/client.py
+++ b/src/python/grpcio_tests/tests/stress/client.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Entry point for running stress tests."""
 
 import argparse
@@ -46,115 +45,132 @@ from tests.stress import test_runner
 
 
 def _args():
-  parser = argparse.ArgumentParser(description='gRPC Python stress test client')
-  parser.add_argument(
-      '--server_addresses',
-      help='comma seperated list of hostname:port to run servers on',
-      default='localhost:8080', type=str)
-  parser.add_argument(
-      '--test_cases',
-      help='comma seperated list of testcase:weighting of tests to run',
-      default='large_unary:100',
-      type=str)
-  parser.add_argument(
-      '--test_duration_secs',
-      help='number of seconds to run the stress test',
-      default=-1, type=int)
-  parser.add_argument(
-      '--num_channels_per_server',
-      help='number of channels per server',
-      default=1, type=int)
-  parser.add_argument(
-      '--num_stubs_per_channel',
-      help='number of stubs to create per channel',
-      default=1, type=int)
-  parser.add_argument(
-      '--metrics_port',
-      help='the port to listen for metrics requests on',
-      default=8081, type=int)
-  parser.add_argument(
-      '--use_test_ca',
-      help='Whether to use our fake CA. Requires --use_tls=true',
-      default=False, type=bool)
-  parser.add_argument(
-      '--use_tls',
-      help='Whether to use TLS', default=False, type=bool)
-  parser.add_argument(
-      '--server_host_override', default="foo.test.google.fr",
-      help='the server host to which to claim to connect', type=str)
-  return parser.parse_args()
+    parser = argparse.ArgumentParser(
+        description='gRPC Python stress test client')
+    parser.add_argument(
+        '--server_addresses',
+        help='comma seperated list of hostname:port to run servers on',
+        default='localhost:8080',
+        type=str)
+    parser.add_argument(
+        '--test_cases',
+        help='comma seperated list of testcase:weighting of tests to run',
+        default='large_unary:100',
+        type=str)
+    parser.add_argument(
+        '--test_duration_secs',
+        help='number of seconds to run the stress test',
+        default=-1,
+        type=int)
+    parser.add_argument(
+        '--num_channels_per_server',
+        help='number of channels per server',
+        default=1,
+        type=int)
+    parser.add_argument(
+        '--num_stubs_per_channel',
+        help='number of stubs to create per channel',
+        default=1,
+        type=int)
+    parser.add_argument(
+        '--metrics_port',
+        help='the port to listen for metrics requests on',
+        default=8081,
+        type=int)
+    parser.add_argument(
+        '--use_test_ca',
+        help='Whether to use our fake CA. Requires --use_tls=true',
+        default=False,
+        type=bool)
+    parser.add_argument(
+        '--use_tls', help='Whether to use TLS', default=False, type=bool)
+    parser.add_argument(
+        '--server_host_override',
+        default="foo.test.google.fr",
+        help='the server host to which to claim to connect',
+        type=str)
+    return parser.parse_args()
 
 
 def _test_case_from_arg(test_case_arg):
-  for test_case in methods.TestCase:
-    if test_case_arg == test_case.value:
-      return test_case
-  else:
-    raise ValueError('No test case {}!'.format(test_case_arg))
+    for test_case in methods.TestCase:
+        if test_case_arg == test_case.value:
+            return test_case
+    else:
+        raise ValueError('No test case {}!'.format(test_case_arg))
 
 
 def _parse_weighted_test_cases(test_case_args):
-  weighted_test_cases = {}
-  for test_case_arg in test_case_args.split(','):
-    name, weight = test_case_arg.split(':', 1)
-    test_case = _test_case_from_arg(name)
-    weighted_test_cases[test_case] = int(weight)
-  return weighted_test_cases
+    weighted_test_cases = {}
+    for test_case_arg in test_case_args.split(','):
+        name, weight = test_case_arg.split(':', 1)
+        test_case = _test_case_from_arg(name)
+        weighted_test_cases[test_case] = int(weight)
+    return weighted_test_cases
+
 
 def _get_channel(target, args):
-  if args.use_tls:
-    if args.use_test_ca:
-      root_certificates = resources.test_root_certificates()
+    if args.use_tls:
+        if args.use_test_ca:
+            root_certificates = resources.test_root_certificates()
+        else:
+            root_certificates = None  # will load default roots.
+        channel_credentials = grpc.ssl_channel_credentials(
+            root_certificates=root_certificates)
+        options = ((
+            'grpc.ssl_target_name_override',
+            args.server_host_override,),)
+        channel = grpc.secure_channel(
+            target, channel_credentials, options=options)
     else:
-      root_certificates = None  # will load default roots.
-    channel_credentials = grpc.ssl_channel_credentials(
-        root_certificates=root_certificates)
-    options = (('grpc.ssl_target_name_override', args.server_host_override,),)
-    return grpc.secure_channel(
-        target, channel_credentials, options=options)
-  else:
-    return grpc.insecure_channel(target)
+        channel = grpc.insecure_channel(target)
+
+    # waits for the channel to be ready before we start sending messages
+    grpc.channel_ready_future(channel).result()
+    return channel
+
 
 def run_test(args):
-  test_cases = _parse_weighted_test_cases(args.test_cases)
-  test_server_targets = args.server_addresses.split(',')
-  # Propagate any client exceptions with a queue
-  exception_queue = queue.Queue()
-  stop_event = threading.Event()
-  hist = histogram.Histogram(1, 1)
-  runners = []
-
-  server = grpc.server(futures.ThreadPoolExecutor(max_workers=25))
-  metrics_pb2.add_MetricsServiceServicer_to_server(
-      metrics_server.MetricsServer(hist), server)
-  server.add_insecure_port('[::]:{}'.format(args.metrics_port))
-  server.start()
-
-  for test_server_target in test_server_targets:
-    for _ in xrange(args.num_channels_per_server):
-      channel = _get_channel(test_server_target, args)
-      for _ in xrange(args.num_stubs_per_channel):
-        stub = test_pb2.TestServiceStub(channel)
-        runner = test_runner.TestRunner(stub, test_cases, hist,
-                                        exception_queue, stop_event)
-        runners.append(runner)
-
-  for runner in runners:
-    runner.start()
-  try:
-    timeout_secs = args.test_duration_secs
-    if timeout_secs < 0:
-      timeout_secs = None
-    raise exception_queue.get(block=True, timeout=timeout_secs)
-  except queue.Empty:
-    # No exceptions thrown, success
-    pass
-  finally:
-    stop_event.set()
+    test_cases = _parse_weighted_test_cases(args.test_cases)
+    test_server_targets = args.server_addresses.split(',')
+    # Propagate any client exceptions with a queue
+    exception_queue = queue.Queue()
+    stop_event = threading.Event()
+    hist = histogram.Histogram(1, 1)
+    runners = []
+
+    server = grpc.server(futures.ThreadPoolExecutor(max_workers=25))
+    metrics_pb2.add_MetricsServiceServicer_to_server(
+        metrics_server.MetricsServer(hist), server)
+    server.add_insecure_port('[::]:{}'.format(args.metrics_port))
+    server.start()
+
+    for test_server_target in test_server_targets:
+        for _ in xrange(args.num_channels_per_server):
+            channel = _get_channel(test_server_target, args)
+            for _ in xrange(args.num_stubs_per_channel):
+                stub = test_pb2.TestServiceStub(channel)
+                runner = test_runner.TestRunner(stub, test_cases, hist,
+                                                exception_queue, stop_event)
+                runners.append(runner)
+
     for runner in runners:
-      runner.join()
-    runner = None
-    server.stop(None)
+        runner.start()
+    try:
+        timeout_secs = args.test_duration_secs
+        if timeout_secs < 0:
+            timeout_secs = None
+        raise exception_queue.get(block=True, timeout=timeout_secs)
+    except queue.Empty:
+        # No exceptions thrown, success
+        pass
+    finally:
+        stop_event.set()
+        for runner in runners:
+            runner.join()
+        runner = None
+        server.stop(None)
+
 
 if __name__ == '__main__':
-  run_test(_args())
+    run_test(_args())
diff --git a/src/python/grpcio_tests/tests/stress/metrics_server.py b/src/python/grpcio_tests/tests/stress/metrics_server.py
index 33dd1d6f2ad4b108061fc415a0dadb9921a3e3b4..3a4cbc27ba32495fd11a56328e71cce4f6298af8 100644
--- a/src/python/grpcio_tests/tests/stress/metrics_server.py
+++ b/src/python/grpcio_tests/tests/stress/metrics_server.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """MetricsService for publishing stress test qps data."""
 
 import time
@@ -38,23 +37,23 @@ GAUGE_NAME = 'python_overall_qps'
 
 class MetricsServer(metrics_pb2.MetricsServiceServicer):
 
-  def __init__(self, histogram):
-    self._start_time = time.time()
-    self._histogram = histogram
-
-  def _get_qps(self):
-    count = self._histogram.get_data().count
-    delta = time.time() - self._start_time
-    self._histogram.reset()
-    self._start_time = time.time()
-    return int(count/delta)
-
-  def GetAllGauges(self, request, context):
-    qps = self._get_qps()
-    return [metrics_pb2.GaugeResponse(name=GAUGE_NAME, long_value=qps)]
-
-  def GetGauge(self, request, context):
-    if request.name != GAUGE_NAME:
-      raise Exception('Gauge {} does not exist'.format(request.name))
-    qps = self._get_qps()
-    return metrics_pb2.GaugeResponse(name=GAUGE_NAME, long_value=qps)
+    def __init__(self, histogram):
+        self._start_time = time.time()
+        self._histogram = histogram
+
+    def _get_qps(self):
+        count = self._histogram.get_data().count
+        delta = time.time() - self._start_time
+        self._histogram.reset()
+        self._start_time = time.time()
+        return int(count / delta)
+
+    def GetAllGauges(self, request, context):
+        qps = self._get_qps()
+        return [metrics_pb2.GaugeResponse(name=GAUGE_NAME, long_value=qps)]
+
+    def GetGauge(self, request, context):
+        if request.name != GAUGE_NAME:
+            raise Exception('Gauge {} does not exist'.format(request.name))
+        qps = self._get_qps()
+        return metrics_pb2.GaugeResponse(name=GAUGE_NAME, long_value=qps)
diff --git a/src/python/grpcio_tests/tests/stress/test_runner.py b/src/python/grpcio_tests/tests/stress/test_runner.py
index 88f13727e37eff44971f813918f91d95ad9f1d24..258abe9c217f1fdd4fbe83a72313d0ef2182d0fd 100644
--- a/src/python/grpcio_tests/tests/stress/test_runner.py
+++ b/src/python/grpcio_tests/tests/stress/test_runner.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Thread that sends random weighted requests on a TestService stub."""
 
 import random
@@ -36,38 +35,38 @@ import traceback
 
 
 def _weighted_test_case_generator(weighted_cases):
-  weight_sum = sum(weighted_cases.itervalues())
+    weight_sum = sum(weighted_cases.itervalues())
 
-  while True:
-    val = random.uniform(0, weight_sum)
-    partial_sum = 0
-    for case in weighted_cases:
-      partial_sum += weighted_cases[case]
-      if val <= partial_sum:
-        yield case
-        break
+    while True:
+        val = random.uniform(0, weight_sum)
+        partial_sum = 0
+        for case in weighted_cases:
+            partial_sum += weighted_cases[case]
+            if val <= partial_sum:
+                yield case
+                break
 
 
 class TestRunner(threading.Thread):
 
-  def __init__(self, stub, test_cases, hist, exception_queue, stop_event):
-    super(TestRunner, self).__init__()
-    self._exception_queue = exception_queue
-    self._stop_event = stop_event
-    self._stub = stub
-    self._test_cases = _weighted_test_case_generator(test_cases)
-    self._histogram = hist
+    def __init__(self, stub, test_cases, hist, exception_queue, stop_event):
+        super(TestRunner, self).__init__()
+        self._exception_queue = exception_queue
+        self._stop_event = stop_event
+        self._stub = stub
+        self._test_cases = _weighted_test_case_generator(test_cases)
+        self._histogram = hist
 
-  def run(self):
-    while not self._stop_event.is_set():
-      try:
-        test_case = next(self._test_cases)
-        start_time = time.time()
-        test_case.test_interoperability(self._stub, None)
-        end_time = time.time()
-        self._histogram.add((end_time - start_time)*1e9)
-      except Exception as e:
-        traceback.print_exc()
-        self._exception_queue.put(
-            Exception("An exception occured during test {}"
-                      .format(test_case), e))
+    def run(self):
+        while not self._stop_event.is_set():
+            try:
+                test_case = next(self._test_cases)
+                start_time = time.time()
+                test_case.test_interoperability(self._stub, None)
+                end_time = time.time()
+                self._histogram.add((end_time - start_time) * 1e9)
+            except Exception as e:
+                traceback.print_exc()
+                self._exception_queue.put(
+                    Exception("An exception occured during test {}"
+                              .format(test_case), e))
diff --git a/src/python/grpcio_tests/tests/tests.json b/src/python/grpcio_tests/tests/tests.json
index dd4a0257f5497b399aaf2e15d117be0796b20802..70d965d3ca8e232ff58be15b82739f1aafe7d2ad 100644
--- a/src/python/grpcio_tests/tests/tests.json
+++ b/src/python/grpcio_tests/tests/tests.json
@@ -1,7 +1,7 @@
 [
   "health_check._health_servicer_test.HealthServicerTest",
-  "interop._insecure_interop_test.InsecureInteropTest",
-  "interop._secure_interop_test.SecureInteropTest",
+  "interop._insecure_intraop_test.InsecureIntraopTest",
+  "interop._secure_intraop_test.SecureIntraopTest",
   "protoc_plugin._python_plugin_test.PythonPluginTest",
   "protoc_plugin._split_definitions_test.SameCommonTest",
   "protoc_plugin._split_definitions_test.SameSeparateTest",
@@ -27,6 +27,8 @@
   "unit._cython.cygrpc_test.TypeSmokeTest",
   "unit._empty_message_test.EmptyMessageTest",
   "unit._exit_test.ExitTest",
+  "unit._invalid_metadata_test.InvalidMetadataTest",
+  "unit._invocation_defects_test.InvocationDefectsTest",
   "unit._metadata_code_details_test.MetadataCodeDetailsTest",
   "unit._metadata_test.MetadataTest",
   "unit._rpc_test.RPCTest",
diff --git a/src/python/grpcio_tests/tests/unit/__init__.py b/src/python/grpcio_tests/tests/unit/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/unit/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/unit/_api_test.py b/src/python/grpcio_tests/tests/unit/_api_test.py
index 51dc4254208e10f2e98bb8c3c326e4c2fcd01ad5..5435c5500cca73487e37436af5f0f440329040ab 100644
--- a/src/python/grpcio_tests/tests/unit/_api_test.py
+++ b/src/python/grpcio_tests/tests/unit/_api_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Test of gRPC Python's application-layer API."""
 
 import unittest
@@ -40,73 +39,71 @@ from tests.unit import _from_grpc_import_star
 
 class AllTest(unittest.TestCase):
 
-  def testAll(self):
-    expected_grpc_code_elements = (
-        'FutureTimeoutError',
-        'FutureCancelledError',
-        'Future',
-        'ChannelConnectivity',
-        'StatusCode',
-        'RpcError',
-        'RpcContext',
-        'Call',
-        'ChannelCredentials',
-        'CallCredentials',
-        'AuthMetadataContext',
-        'AuthMetadataPluginCallback',
-        'AuthMetadataPlugin',
-        'ServerCredentials',
-        'UnaryUnaryMultiCallable',
-        'UnaryStreamMultiCallable',
-        'StreamUnaryMultiCallable',
-        'StreamStreamMultiCallable',
-        'Channel',
-        'ServicerContext',
-        'RpcMethodHandler',
-        'HandlerCallDetails',
-        'GenericRpcHandler',
-        'ServiceRpcHandler',
-        'Server',
-        'unary_unary_rpc_method_handler',
-        'unary_stream_rpc_method_handler',
-        'stream_unary_rpc_method_handler',
-        'stream_stream_rpc_method_handler',
-        'method_handlers_generic_handler',
-        'ssl_channel_credentials',
-        'metadata_call_credentials',
-        'access_token_call_credentials',
-        'composite_call_credentials',
-        'composite_channel_credentials',
-        'ssl_server_credentials',
-        'channel_ready_future',
-        'insecure_channel',
-        'secure_channel',
-        'server',
-    )
-
-    six.assertCountEqual(
-        self, expected_grpc_code_elements,
-        _from_grpc_import_star.GRPC_ELEMENTS)
+    def testAll(self):
+        expected_grpc_code_elements = (
+            'FutureTimeoutError',
+            'FutureCancelledError',
+            'Future',
+            'ChannelConnectivity',
+            'StatusCode',
+            'RpcError',
+            'RpcContext',
+            'Call',
+            'ChannelCredentials',
+            'CallCredentials',
+            'AuthMetadataContext',
+            'AuthMetadataPluginCallback',
+            'AuthMetadataPlugin',
+            'ServerCredentials',
+            'UnaryUnaryMultiCallable',
+            'UnaryStreamMultiCallable',
+            'StreamUnaryMultiCallable',
+            'StreamStreamMultiCallable',
+            'Channel',
+            'ServicerContext',
+            'RpcMethodHandler',
+            'HandlerCallDetails',
+            'GenericRpcHandler',
+            'ServiceRpcHandler',
+            'Server',
+            'unary_unary_rpc_method_handler',
+            'unary_stream_rpc_method_handler',
+            'stream_unary_rpc_method_handler',
+            'stream_stream_rpc_method_handler',
+            'method_handlers_generic_handler',
+            'ssl_channel_credentials',
+            'metadata_call_credentials',
+            'access_token_call_credentials',
+            'composite_call_credentials',
+            'composite_channel_credentials',
+            'ssl_server_credentials',
+            'channel_ready_future',
+            'insecure_channel',
+            'secure_channel',
+            'server',)
+
+        six.assertCountEqual(self, expected_grpc_code_elements,
+                             _from_grpc_import_star.GRPC_ELEMENTS)
 
 
 class ChannelConnectivityTest(unittest.TestCase):
 
-  def testChannelConnectivity(self):
-    self.assertSequenceEqual(
-        (grpc.ChannelConnectivity.IDLE,
-         grpc.ChannelConnectivity.CONNECTING,
-         grpc.ChannelConnectivity.READY,
-         grpc.ChannelConnectivity.TRANSIENT_FAILURE,
-         grpc.ChannelConnectivity.SHUTDOWN,),
-        tuple(grpc.ChannelConnectivity))
+    def testChannelConnectivity(self):
+        self.assertSequenceEqual((
+            grpc.ChannelConnectivity.IDLE,
+            grpc.ChannelConnectivity.CONNECTING,
+            grpc.ChannelConnectivity.READY,
+            grpc.ChannelConnectivity.TRANSIENT_FAILURE,
+            grpc.ChannelConnectivity.SHUTDOWN,),
+                                 tuple(grpc.ChannelConnectivity))
 
 
 class ChannelTest(unittest.TestCase):
 
-  def test_secure_channel(self):
-    channel_credentials = grpc.ssl_channel_credentials()
-    channel = grpc.secure_channel('google.com:443', channel_credentials)
+    def test_secure_channel(self):
+        channel_credentials = grpc.ssl_channel_credentials()
+        channel = grpc.secure_channel('google.com:443', channel_credentials)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_auth_test.py b/src/python/grpcio_tests/tests/unit/_auth_test.py
index c31f7b06f7315910e51dbc85990764efa02a7d1d..52bd1cb7ba4da6970bf70cf05f2455b30d4526b0 100644
--- a/src/python/grpcio_tests/tests/unit/_auth_test.py
+++ b/src/python/grpcio_tests/tests/unit/_auth_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of standard AuthMetadataPlugins."""
 
 import collections
@@ -38,59 +37,59 @@ from grpc import _auth
 
 class MockGoogleCreds(object):
 
-  def get_access_token(self):
-    token = collections.namedtuple('MockAccessTokenInfo',
-                                   ('access_token', 'expires_in'))
-    token.access_token = 'token'
-    return token
+    def get_access_token(self):
+        token = collections.namedtuple('MockAccessTokenInfo',
+                                       ('access_token', 'expires_in'))
+        token.access_token = 'token'
+        return token
 
 
 class MockExceptionGoogleCreds(object):
 
-  def get_access_token(self):
-    raise Exception()
+    def get_access_token(self):
+        raise Exception()
 
 
 class GoogleCallCredentialsTest(unittest.TestCase):
 
-  def test_google_call_credentials_success(self):
-    callback_event = threading.Event()
+    def test_google_call_credentials_success(self):
+        callback_event = threading.Event()
 
-    def mock_callback(metadata, error):
-      self.assertEqual(metadata, (('authorization', 'Bearer token'),))
-      self.assertIsNone(error)
-      callback_event.set()
+        def mock_callback(metadata, error):
+            self.assertEqual(metadata, (('authorization', 'Bearer token'),))
+            self.assertIsNone(error)
+            callback_event.set()
 
-    call_creds = _auth.GoogleCallCredentials(MockGoogleCreds())
-    call_creds(None, mock_callback)
-    self.assertTrue(callback_event.wait(1.0))
+        call_creds = _auth.GoogleCallCredentials(MockGoogleCreds())
+        call_creds(None, mock_callback)
+        self.assertTrue(callback_event.wait(1.0))
 
-  def test_google_call_credentials_error(self):
-    callback_event = threading.Event()
+    def test_google_call_credentials_error(self):
+        callback_event = threading.Event()
 
-    def mock_callback(metadata, error):
-      self.assertIsNotNone(error)
-      callback_event.set()
+        def mock_callback(metadata, error):
+            self.assertIsNotNone(error)
+            callback_event.set()
 
-    call_creds = _auth.GoogleCallCredentials(MockExceptionGoogleCreds())
-    call_creds(None, mock_callback)
-    self.assertTrue(callback_event.wait(1.0))
+        call_creds = _auth.GoogleCallCredentials(MockExceptionGoogleCreds())
+        call_creds(None, mock_callback)
+        self.assertTrue(callback_event.wait(1.0))
 
 
 class AccessTokenCallCredentialsTest(unittest.TestCase):
 
-  def test_google_call_credentials_success(self):
-    callback_event = threading.Event()
+    def test_google_call_credentials_success(self):
+        callback_event = threading.Event()
 
-    def mock_callback(metadata, error):
-      self.assertEqual(metadata, (('authorization', 'Bearer token'),))
-      self.assertIsNone(error)
-      callback_event.set()
+        def mock_callback(metadata, error):
+            self.assertEqual(metadata, (('authorization', 'Bearer token'),))
+            self.assertIsNone(error)
+            callback_event.set()
 
-    call_creds = _auth.AccessTokenCallCredentials('token')
-    call_creds(None, mock_callback)
-    self.assertTrue(callback_event.wait(1.0))
+        call_creds = _auth.AccessTokenCallCredentials('token')
+        call_creds(None, mock_callback)
+        self.assertTrue(callback_event.wait(1.0))
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_channel_args_test.py b/src/python/grpcio_tests/tests/unit/_channel_args_test.py
index b46497afd604dd970bb296284497044bea550f18..845db777a4c0e0db370e9e15a6bc0042dda26ff1 100644
--- a/src/python/grpcio_tests/tests/unit/_channel_args_test.py
+++ b/src/python/grpcio_tests/tests/unit/_channel_args_test.py
@@ -26,17 +26,17 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of Channel Args on client/server side."""
 
 import unittest
 
 import grpc
 
+
 class TestPointerWrapper(object):
 
-  def __int__(self):
-    return 123456
+    def __int__(self):
+        return 123456
 
 
 TEST_CHANNEL_ARGS = (
@@ -44,17 +44,17 @@ TEST_CHANNEL_ARGS = (
     ('arg2', 'str_val'),
     ('arg3', 1),
     (b'arg4', 'str_val'),
-    ('arg6', TestPointerWrapper()),
-)
+    ('arg6', TestPointerWrapper()),)
 
 
 class ChannelArgsTest(unittest.TestCase):
 
-  def test_client(self):
-    grpc.insecure_channel('localhost:8080', options=TEST_CHANNEL_ARGS)
+    def test_client(self):
+        grpc.insecure_channel('localhost:8080', options=TEST_CHANNEL_ARGS)
+
+    def test_server(self):
+        grpc.server(None, options=TEST_CHANNEL_ARGS)
 
-  def test_server(self):
-    grpc.server(None, options=TEST_CHANNEL_ARGS)
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py b/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py
index 3d9dd17ff684db63670f706b550ae873a276ba93..d67693154b85b5fad9a658879b5677cd67e2af2f 100644
--- a/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py
+++ b/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of grpc._channel.Channel connectivity."""
 
 import threading
@@ -39,125 +38,123 @@ from tests.unit import _thread_pool
 
 
 def _ready_in_connectivities(connectivities):
-  return grpc.ChannelConnectivity.READY in connectivities
+    return grpc.ChannelConnectivity.READY in connectivities
 
 
 def _last_connectivity_is_not_ready(connectivities):
-  return connectivities[-1] is not grpc.ChannelConnectivity.READY
+    return connectivities[-1] is not grpc.ChannelConnectivity.READY
 
 
 class _Callback(object):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._connectivities = []
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._connectivities = []
 
-  def update(self, connectivity):
-    with self._condition:
-      self._connectivities.append(connectivity)
-      self._condition.notify()
+    def update(self, connectivity):
+        with self._condition:
+            self._connectivities.append(connectivity)
+            self._condition.notify()
 
-  def connectivities(self):
-    with self._condition:
-      return tuple(self._connectivities)
+    def connectivities(self):
+        with self._condition:
+            return tuple(self._connectivities)
 
-  def block_until_connectivities_satisfy(self, predicate):
-    with self._condition:
-      while True:
-        connectivities = tuple(self._connectivities)
-        if predicate(connectivities):
-          return connectivities
-        else:
-          self._condition.wait()
+    def block_until_connectivities_satisfy(self, predicate):
+        with self._condition:
+            while True:
+                connectivities = tuple(self._connectivities)
+                if predicate(connectivities):
+                    return connectivities
+                else:
+                    self._condition.wait()
 
 
 class ChannelConnectivityTest(unittest.TestCase):
 
-  def test_lonely_channel_connectivity(self):
-    callback = _Callback()
-
-    channel = grpc.insecure_channel('localhost:12345')
-    channel.subscribe(callback.update, try_to_connect=False)
-    first_connectivities = callback.block_until_connectivities_satisfy(bool)
-    channel.subscribe(callback.update, try_to_connect=True)
-    second_connectivities = callback.block_until_connectivities_satisfy(
-        lambda connectivities: 2 <= len(connectivities))
-    # Wait for a connection that will never happen.
-    time.sleep(test_constants.SHORT_TIMEOUT)
-    third_connectivities = callback.connectivities()
-    channel.unsubscribe(callback.update)
-    fourth_connectivities = callback.connectivities()
-    channel.unsubscribe(callback.update)
-    fifth_connectivities = callback.connectivities()
-
-    self.assertSequenceEqual(
-        (grpc.ChannelConnectivity.IDLE,), first_connectivities)
-    self.assertNotIn(
-        grpc.ChannelConnectivity.READY, second_connectivities)
-    self.assertNotIn(
-        grpc.ChannelConnectivity.READY, third_connectivities)
-    self.assertNotIn(
-        grpc.ChannelConnectivity.READY, fourth_connectivities)
-    self.assertNotIn(
-        grpc.ChannelConnectivity.READY, fifth_connectivities)
-
-  def test_immediately_connectable_channel_connectivity(self):
-    thread_pool = _thread_pool.RecordingThreadPool(max_workers=None)
-    server = grpc.server(thread_pool)
-    port = server.add_insecure_port('[::]:0')
-    server.start()
-    first_callback = _Callback()
-    second_callback = _Callback()
-
-    channel = grpc.insecure_channel('localhost:{}'.format(port))
-    channel.subscribe(first_callback.update, try_to_connect=False)
-    first_connectivities = first_callback.block_until_connectivities_satisfy(
-        bool)
-    # Wait for a connection that will never happen because try_to_connect=True
-    # has not yet been passed.
-    time.sleep(test_constants.SHORT_TIMEOUT)
-    second_connectivities = first_callback.connectivities()
-    channel.subscribe(second_callback.update, try_to_connect=True)
-    third_connectivities = first_callback.block_until_connectivities_satisfy(
-        lambda connectivities: 2 <= len(connectivities))
-    fourth_connectivities = second_callback.block_until_connectivities_satisfy(
-        bool)
-    # Wait for a connection that will happen (or may already have happened).
-    first_callback.block_until_connectivities_satisfy(_ready_in_connectivities)
-    second_callback.block_until_connectivities_satisfy(_ready_in_connectivities)
-    del channel
-
-    self.assertSequenceEqual(
-        (grpc.ChannelConnectivity.IDLE,), first_connectivities)
-    self.assertSequenceEqual(
-        (grpc.ChannelConnectivity.IDLE,), second_connectivities)
-    self.assertNotIn(
-        grpc.ChannelConnectivity.TRANSIENT_FAILURE, third_connectivities)
-    self.assertNotIn(
-        grpc.ChannelConnectivity.SHUTDOWN, third_connectivities)
-    self.assertNotIn(
-        grpc.ChannelConnectivity.TRANSIENT_FAILURE,
-        fourth_connectivities)
-    self.assertNotIn(
-        grpc.ChannelConnectivity.SHUTDOWN, fourth_connectivities)
-    self.assertFalse(thread_pool.was_used())
-
-  def test_reachable_then_unreachable_channel_connectivity(self):
-    thread_pool = _thread_pool.RecordingThreadPool(max_workers=None)
-    server = grpc.server(thread_pool)
-    port = server.add_insecure_port('[::]:0')
-    server.start()
-    callback = _Callback()
-
-    channel = grpc.insecure_channel('localhost:{}'.format(port))
-    channel.subscribe(callback.update, try_to_connect=True)
-    callback.block_until_connectivities_satisfy(_ready_in_connectivities)
-    # Now take down the server and confirm that channel readiness is repudiated.
-    server.stop(None)
-    callback.block_until_connectivities_satisfy(_last_connectivity_is_not_ready)
-    channel.unsubscribe(callback.update)
-    self.assertFalse(thread_pool.was_used())
+    def test_lonely_channel_connectivity(self):
+        callback = _Callback()
+
+        channel = grpc.insecure_channel('localhost:12345')
+        channel.subscribe(callback.update, try_to_connect=False)
+        first_connectivities = callback.block_until_connectivities_satisfy(bool)
+        channel.subscribe(callback.update, try_to_connect=True)
+        second_connectivities = callback.block_until_connectivities_satisfy(
+            lambda connectivities: 2 <= len(connectivities))
+        # Wait for a connection that will never happen.
+        time.sleep(test_constants.SHORT_TIMEOUT)
+        third_connectivities = callback.connectivities()
+        channel.unsubscribe(callback.update)
+        fourth_connectivities = callback.connectivities()
+        channel.unsubscribe(callback.update)
+        fifth_connectivities = callback.connectivities()
+
+        self.assertSequenceEqual((grpc.ChannelConnectivity.IDLE,),
+                                 first_connectivities)
+        self.assertNotIn(grpc.ChannelConnectivity.READY, second_connectivities)
+        self.assertNotIn(grpc.ChannelConnectivity.READY, third_connectivities)
+        self.assertNotIn(grpc.ChannelConnectivity.READY, fourth_connectivities)
+        self.assertNotIn(grpc.ChannelConnectivity.READY, fifth_connectivities)
+
+    def test_immediately_connectable_channel_connectivity(self):
+        thread_pool = _thread_pool.RecordingThreadPool(max_workers=None)
+        server = grpc.server(thread_pool)
+        port = server.add_insecure_port('[::]:0')
+        server.start()
+        first_callback = _Callback()
+        second_callback = _Callback()
+
+        channel = grpc.insecure_channel('localhost:{}'.format(port))
+        channel.subscribe(first_callback.update, try_to_connect=False)
+        first_connectivities = first_callback.block_until_connectivities_satisfy(
+            bool)
+        # Wait for a connection that will never happen because try_to_connect=True
+        # has not yet been passed.
+        time.sleep(test_constants.SHORT_TIMEOUT)
+        second_connectivities = first_callback.connectivities()
+        channel.subscribe(second_callback.update, try_to_connect=True)
+        third_connectivities = first_callback.block_until_connectivities_satisfy(
+            lambda connectivities: 2 <= len(connectivities))
+        fourth_connectivities = second_callback.block_until_connectivities_satisfy(
+            bool)
+        # Wait for a connection that will happen (or may already have happened).
+        first_callback.block_until_connectivities_satisfy(
+            _ready_in_connectivities)
+        second_callback.block_until_connectivities_satisfy(
+            _ready_in_connectivities)
+        del channel
+
+        self.assertSequenceEqual((grpc.ChannelConnectivity.IDLE,),
+                                 first_connectivities)
+        self.assertSequenceEqual((grpc.ChannelConnectivity.IDLE,),
+                                 second_connectivities)
+        self.assertNotIn(grpc.ChannelConnectivity.TRANSIENT_FAILURE,
+                         third_connectivities)
+        self.assertNotIn(grpc.ChannelConnectivity.SHUTDOWN,
+                         third_connectivities)
+        self.assertNotIn(grpc.ChannelConnectivity.TRANSIENT_FAILURE,
+                         fourth_connectivities)
+        self.assertNotIn(grpc.ChannelConnectivity.SHUTDOWN,
+                         fourth_connectivities)
+        self.assertFalse(thread_pool.was_used())
+
+    def test_reachable_then_unreachable_channel_connectivity(self):
+        thread_pool = _thread_pool.RecordingThreadPool(max_workers=None)
+        server = grpc.server(thread_pool)
+        port = server.add_insecure_port('[::]:0')
+        server.start()
+        callback = _Callback()
+
+        channel = grpc.insecure_channel('localhost:{}'.format(port))
+        channel.subscribe(callback.update, try_to_connect=True)
+        callback.block_until_connectivities_satisfy(_ready_in_connectivities)
+        # Now take down the server and confirm that channel readiness is repudiated.
+        server.stop(None)
+        callback.block_until_connectivities_satisfy(
+            _last_connectivity_is_not_ready)
+        channel.unsubscribe(callback.update)
+        self.assertFalse(thread_pool.was_used())
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py b/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py
index e0a7d15aa7636c77d9274e2df8de6ff04c97fe8c..2d1b63e15f3fcf3c0793870b41d0a284a08c901b 100644
--- a/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py
+++ b/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of grpc.channel_ready_future."""
 
 import threading
@@ -39,65 +38,66 @@ from tests.unit import _thread_pool
 
 class _Callback(object):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._value = None
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._value = None
 
-  def accept_value(self, value):
-    with self._condition:
-      self._value = value
-      self._condition.notify_all()
+    def accept_value(self, value):
+        with self._condition:
+            self._value = value
+            self._condition.notify_all()
 
-  def block_until_called(self):
-    with self._condition:
-      while self._value is None:
-        self._condition.wait()
-      return self._value
+    def block_until_called(self):
+        with self._condition:
+            while self._value is None:
+                self._condition.wait()
+            return self._value
 
 
 class ChannelReadyFutureTest(unittest.TestCase):
 
-  def test_lonely_channel_connectivity(self):
-    channel = grpc.insecure_channel('localhost:12345')
-    callback = _Callback()
-
-    ready_future = grpc.channel_ready_future(channel)
-    ready_future.add_done_callback(callback.accept_value)
-    with self.assertRaises(grpc.FutureTimeoutError):
-      ready_future.result(test_constants.SHORT_TIMEOUT)
-    self.assertFalse(ready_future.cancelled())
-    self.assertFalse(ready_future.done())
-    self.assertTrue(ready_future.running())
-    ready_future.cancel()
-    value_passed_to_callback = callback.block_until_called()
-    self.assertIs(ready_future, value_passed_to_callback)
-    self.assertTrue(ready_future.cancelled())
-    self.assertTrue(ready_future.done())
-    self.assertFalse(ready_future.running())
-
-  def test_immediately_connectable_channel_connectivity(self):
-    thread_pool = _thread_pool.RecordingThreadPool(max_workers=None)
-    server = grpc.server(thread_pool)
-    port = server.add_insecure_port('[::]:0')
-    server.start()
-    channel = grpc.insecure_channel('localhost:{}'.format(port))
-    callback = _Callback()
-
-    ready_future = grpc.channel_ready_future(channel)
-    ready_future.add_done_callback(callback.accept_value)
-    self.assertIsNone(ready_future.result(test_constants.SHORT_TIMEOUT))
-    value_passed_to_callback = callback.block_until_called()
-    self.assertIs(ready_future, value_passed_to_callback)
-    self.assertFalse(ready_future.cancelled())
-    self.assertTrue(ready_future.done())
-    self.assertFalse(ready_future.running())
-    # Cancellation after maturity has no effect.
-    ready_future.cancel()
-    self.assertFalse(ready_future.cancelled())
-    self.assertTrue(ready_future.done())
-    self.assertFalse(ready_future.running())
-    self.assertFalse(thread_pool.was_used())
+    def test_lonely_channel_connectivity(self):
+        channel = grpc.insecure_channel('localhost:12345')
+        callback = _Callback()
+
+        ready_future = grpc.channel_ready_future(channel)
+        ready_future.add_done_callback(callback.accept_value)
+        with self.assertRaises(grpc.FutureTimeoutError):
+            ready_future.result(timeout=test_constants.SHORT_TIMEOUT)
+        self.assertFalse(ready_future.cancelled())
+        self.assertFalse(ready_future.done())
+        self.assertTrue(ready_future.running())
+        ready_future.cancel()
+        value_passed_to_callback = callback.block_until_called()
+        self.assertIs(ready_future, value_passed_to_callback)
+        self.assertTrue(ready_future.cancelled())
+        self.assertTrue(ready_future.done())
+        self.assertFalse(ready_future.running())
+
+    def test_immediately_connectable_channel_connectivity(self):
+        thread_pool = _thread_pool.RecordingThreadPool(max_workers=None)
+        server = grpc.server(thread_pool)
+        port = server.add_insecure_port('[::]:0')
+        server.start()
+        channel = grpc.insecure_channel('localhost:{}'.format(port))
+        callback = _Callback()
+
+        ready_future = grpc.channel_ready_future(channel)
+        ready_future.add_done_callback(callback.accept_value)
+        self.assertIsNone(
+            ready_future.result(timeout=test_constants.LONG_TIMEOUT))
+        value_passed_to_callback = callback.block_until_called()
+        self.assertIs(ready_future, value_passed_to_callback)
+        self.assertFalse(ready_future.cancelled())
+        self.assertTrue(ready_future.done())
+        self.assertFalse(ready_future.running())
+        # Cancellation after maturity has no effect.
+        ready_future.cancel()
+        self.assertFalse(ready_future.cancelled())
+        self.assertTrue(ready_future.done())
+        self.assertFalse(ready_future.running())
+        self.assertFalse(thread_pool.was_used())
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_compression_test.py b/src/python/grpcio_tests/tests/unit/_compression_test.py
index 83b91094666cd5a0be5e879cf0f3309b622c4532..7dd944e6008f0a7a4764ace17ff66e8b2899a471 100644
--- a/src/python/grpcio_tests/tests/unit/_compression_test.py
+++ b/src/python/grpcio_tests/tests/unit/_compression_test.py
@@ -42,93 +42,96 @@ _STREAM_STREAM = '/test/StreamStream'
 
 
 def handle_unary(request, servicer_context):
-  servicer_context.send_initial_metadata([
-    ('grpc-internal-encoding-request', 'gzip')])
-  return request
+    servicer_context.send_initial_metadata(
+        [('grpc-internal-encoding-request', 'gzip')])
+    return request
 
 
 def handle_stream(request_iterator, servicer_context):
-  # TODO(issue:#6891) We should be able to remove this loop,
-  # and replace with return; yield
-  servicer_context.send_initial_metadata([
-    ('grpc-internal-encoding-request', 'gzip')])
-  for request in request_iterator:
-    yield request
+    # TODO(issue:#6891) We should be able to remove this loop,
+    # and replace with return; yield
+    servicer_context.send_initial_metadata(
+        [('grpc-internal-encoding-request', 'gzip')])
+    for request in request_iterator:
+        yield request
 
 
 class _MethodHandler(grpc.RpcMethodHandler):
 
-  def __init__(self, request_streaming, response_streaming):
-    self.request_streaming = request_streaming
-    self.response_streaming = response_streaming
-    self.request_deserializer = None
-    self.response_serializer = None
-    self.unary_unary = None
-    self.unary_stream = None
-    self.stream_unary = None
-    self.stream_stream = None
-    if self.request_streaming and self.response_streaming:
-      self.stream_stream = lambda x, y: handle_stream(x, y)
-    elif not self.request_streaming and not self.response_streaming:
-      self.unary_unary = lambda x, y: handle_unary(x, y)
+    def __init__(self, request_streaming, response_streaming):
+        self.request_streaming = request_streaming
+        self.response_streaming = response_streaming
+        self.request_deserializer = None
+        self.response_serializer = None
+        self.unary_unary = None
+        self.unary_stream = None
+        self.stream_unary = None
+        self.stream_stream = None
+        if self.request_streaming and self.response_streaming:
+            self.stream_stream = lambda x, y: handle_stream(x, y)
+        elif not self.request_streaming and not self.response_streaming:
+            self.unary_unary = lambda x, y: handle_unary(x, y)
 
 
 class _GenericHandler(grpc.GenericRpcHandler):
 
-  def service(self, handler_call_details):
-    if handler_call_details.method == _UNARY_UNARY:
-      return _MethodHandler(False, False)
-    elif handler_call_details.method == _STREAM_STREAM:
-      return _MethodHandler(True, True)
-    else:
-      return None
+    def service(self, handler_call_details):
+        if handler_call_details.method == _UNARY_UNARY:
+            return _MethodHandler(False, False)
+        elif handler_call_details.method == _STREAM_STREAM:
+            return _MethodHandler(True, True)
+        else:
+            return None
 
 
 class CompressionTest(unittest.TestCase):
 
-  def setUp(self):
-    self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    self._server = grpc.server(
-        self._server_pool, handlers=(_GenericHandler(),))
-    self._port = self._server.add_insecure_port('[::]:0')
-    self._server.start()
-
-  def testUnary(self):
-    request = b'\x00' * 100
-
-    # Client -> server compressed through default client channel compression
-    # settings. Server -> client compressed via server-side metadata setting.
-    # TODO(https://github.com/grpc/grpc/issues/4078): replace the "1" integer
-    # literal with proper use of the public API.
-    compressed_channel = grpc.insecure_channel('localhost:%d' % self._port,
-        options=[('grpc.default_compression_algorithm', 1)])
-    multi_callable = compressed_channel.unary_unary(_UNARY_UNARY)
-    response = multi_callable(request)
-    self.assertEqual(request, response)
-
-    # Client -> server compressed through client metadata setting. Server ->
-    # client compressed via server-side metadata setting.
-    # TODO(https://github.com/grpc/grpc/issues/4078): replace the "0" integer
-    # literal with proper use of the public API.
-    uncompressed_channel = grpc.insecure_channel('localhost:%d' % self._port,
-        options=[('grpc.default_compression_algorithm', 0)])
-    multi_callable = compressed_channel.unary_unary(_UNARY_UNARY)
-    response = multi_callable(request, metadata=[
-      ('grpc-internal-encoding-request', 'gzip')])
-    self.assertEqual(request, response)
-
-  def testStreaming(self):
-    request = b'\x00' * 100
-
-    # TODO(https://github.com/grpc/grpc/issues/4078): replace the "1" integer
-    # literal with proper use of the public API.
-    compressed_channel = grpc.insecure_channel('localhost:%d' % self._port,
-        options=[('grpc.default_compression_algorithm', 1)])
-    multi_callable = compressed_channel.stream_stream(_STREAM_STREAM)
-    call = multi_callable([request] * test_constants.STREAM_LENGTH)
-    for response in call:
-      self.assertEqual(request, response)
+    def setUp(self):
+        self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        self._server = grpc.server(
+            self._server_pool, handlers=(_GenericHandler(),))
+        self._port = self._server.add_insecure_port('[::]:0')
+        self._server.start()
+
+    def testUnary(self):
+        request = b'\x00' * 100
+
+        # Client -> server compressed through default client channel compression
+        # settings. Server -> client compressed via server-side metadata setting.
+        # TODO(https://github.com/grpc/grpc/issues/4078): replace the "1" integer
+        # literal with proper use of the public API.
+        compressed_channel = grpc.insecure_channel(
+            'localhost:%d' % self._port,
+            options=[('grpc.default_compression_algorithm', 1)])
+        multi_callable = compressed_channel.unary_unary(_UNARY_UNARY)
+        response = multi_callable(request)
+        self.assertEqual(request, response)
+
+        # Client -> server compressed through client metadata setting. Server ->
+        # client compressed via server-side metadata setting.
+        # TODO(https://github.com/grpc/grpc/issues/4078): replace the "0" integer
+        # literal with proper use of the public API.
+        uncompressed_channel = grpc.insecure_channel(
+            'localhost:%d' % self._port,
+            options=[('grpc.default_compression_algorithm', 0)])
+        multi_callable = compressed_channel.unary_unary(_UNARY_UNARY)
+        response = multi_callable(
+            request, metadata=[('grpc-internal-encoding-request', 'gzip')])
+        self.assertEqual(request, response)
+
+    def testStreaming(self):
+        request = b'\x00' * 100
+
+        # TODO(https://github.com/grpc/grpc/issues/4078): replace the "1" integer
+        # literal with proper use of the public API.
+        compressed_channel = grpc.insecure_channel(
+            'localhost:%d' % self._port,
+            options=[('grpc.default_compression_algorithm', 1)])
+        multi_callable = compressed_channel.stream_stream(_STREAM_STREAM)
+        call = multi_callable(iter([request] * test_constants.STREAM_LENGTH))
+        for response in call:
+            self.assertEqual(request, response)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_credentials_test.py b/src/python/grpcio_tests/tests/unit/_credentials_test.py
index 87af85a0b9b01f6ce9bf906c5a1199462d72cf27..21bf29789a7e56e99e49a2d6ccfb441789171b3f 100644
--- a/src/python/grpcio_tests/tests/unit/_credentials_test.py
+++ b/src/python/grpcio_tests/tests/unit/_credentials_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of credentials."""
 
 import unittest
@@ -36,37 +35,38 @@ import grpc
 
 class CredentialsTest(unittest.TestCase):
 
-  def test_call_credentials_composition(self):
-    first = grpc.access_token_call_credentials('abc')
-    second = grpc.access_token_call_credentials('def')
-    third = grpc.access_token_call_credentials('ghi')
+    def test_call_credentials_composition(self):
+        first = grpc.access_token_call_credentials('abc')
+        second = grpc.access_token_call_credentials('def')
+        third = grpc.access_token_call_credentials('ghi')
+
+        first_and_second = grpc.composite_call_credentials(first, second)
+        first_second_and_third = grpc.composite_call_credentials(first, second,
+                                                                 third)
 
-    first_and_second = grpc.composite_call_credentials(first, second)
-    first_second_and_third = grpc.composite_call_credentials(
-        first, second, third)
-    
-    self.assertIsInstance(first_and_second, grpc.CallCredentials)
-    self.assertIsInstance(first_second_and_third, grpc.CallCredentials)
+        self.assertIsInstance(first_and_second, grpc.CallCredentials)
+        self.assertIsInstance(first_second_and_third, grpc.CallCredentials)
 
-  def test_channel_credentials_composition(self):
-    first_call_credentials = grpc.access_token_call_credentials('abc')
-    second_call_credentials = grpc.access_token_call_credentials('def')
-    third_call_credentials = grpc.access_token_call_credentials('ghi')
-    channel_credentials = grpc.ssl_channel_credentials()
+    def test_channel_credentials_composition(self):
+        first_call_credentials = grpc.access_token_call_credentials('abc')
+        second_call_credentials = grpc.access_token_call_credentials('def')
+        third_call_credentials = grpc.access_token_call_credentials('ghi')
+        channel_credentials = grpc.ssl_channel_credentials()
 
-    channel_and_first = grpc.composite_channel_credentials(
-        channel_credentials, first_call_credentials)
-    channel_first_and_second = grpc.composite_channel_credentials(
-        channel_credentials, first_call_credentials, second_call_credentials)
-    channel_first_second_and_third = grpc.composite_channel_credentials(
-        channel_credentials, first_call_credentials, second_call_credentials,
-        third_call_credentials)
+        channel_and_first = grpc.composite_channel_credentials(
+            channel_credentials, first_call_credentials)
+        channel_first_and_second = grpc.composite_channel_credentials(
+            channel_credentials, first_call_credentials,
+            second_call_credentials)
+        channel_first_second_and_third = grpc.composite_channel_credentials(
+            channel_credentials, first_call_credentials,
+            second_call_credentials, third_call_credentials)
 
-    self.assertIsInstance(channel_and_first, grpc.ChannelCredentials)
-    self.assertIsInstance(channel_first_and_second, grpc.ChannelCredentials)
-    self.assertIsInstance(
-        channel_first_second_and_third, grpc.ChannelCredentials)
+        self.assertIsInstance(channel_and_first, grpc.ChannelCredentials)
+        self.assertIsInstance(channel_first_and_second, grpc.ChannelCredentials)
+        self.assertIsInstance(channel_first_second_and_third,
+                              grpc.ChannelCredentials)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py b/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py
index 20115fb22cb7bf774a6e14f8fcf0f7096fcf6a34..d77f5ecb27ec78e8927e07ae02cf517ad0d5c1c1 100644
--- a/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Test making many calls and immediately cancelling most of them."""
 
 import threading
@@ -51,173 +50,178 @@ _SUCCESS_CALL_FRACTION = 1.0 / 8.0
 
 class _State(object):
 
-  def __init__(self):
-    self.condition = threading.Condition()
-    self.handlers_released = False
-    self.parked_handlers = 0
-    self.handled_rpcs = 0
+    def __init__(self):
+        self.condition = threading.Condition()
+        self.handlers_released = False
+        self.parked_handlers = 0
+        self.handled_rpcs = 0
 
 
 def _is_cancellation_event(event):
-  return (
-      event.tag is _RECEIVE_CLOSE_ON_SERVER_TAG and
-      event.batch_operations[0].received_cancelled)
+    return (event.tag is _RECEIVE_CLOSE_ON_SERVER_TAG and
+            event.batch_operations[0].received_cancelled)
 
 
 class _Handler(object):
 
-  def __init__(self, state, completion_queue, rpc_event):
-    self._state = state
-    self._lock = threading.Lock()
-    self._completion_queue = completion_queue
-    self._call = rpc_event.operation_call
-
-  def __call__(self):
-    with self._state.condition:
-      self._state.parked_handlers += 1
-      if self._state.parked_handlers == test_constants.THREAD_CONCURRENCY:
-        self._state.condition.notify_all()
-      while not self._state.handlers_released:
-        self._state.condition.wait()
-
-    with self._lock:
-      self._call.start_server_batch(
-          cygrpc.Operations(
-              (cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),)),
-          _RECEIVE_CLOSE_ON_SERVER_TAG)
-      self._call.start_server_batch(
-          cygrpc.Operations((cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
-          _RECEIVE_MESSAGE_TAG)
-    first_event = self._completion_queue.poll()
-    if _is_cancellation_event(first_event):
-      self._completion_queue.poll()
-    else:
-      with self._lock:
-        operations = (
-            cygrpc.operation_send_initial_metadata(
-                _EMPTY_METADATA, _EMPTY_FLAGS),
-            cygrpc.operation_send_message(b'\x79\x57', _EMPTY_FLAGS),
-            cygrpc.operation_send_status_from_server(
-                _EMPTY_METADATA, cygrpc.StatusCode.ok, b'test details!',
-                _EMPTY_FLAGS),
-        )
-        self._call.start_server_batch(
-            cygrpc.Operations(operations), _SERVER_COMPLETE_CALL_TAG)
-      self._completion_queue.poll()
-      self._completion_queue.poll()
+    def __init__(self, state, completion_queue, rpc_event):
+        self._state = state
+        self._lock = threading.Lock()
+        self._completion_queue = completion_queue
+        self._call = rpc_event.operation_call
+
+    def __call__(self):
+        with self._state.condition:
+            self._state.parked_handlers += 1
+            if self._state.parked_handlers == test_constants.THREAD_CONCURRENCY:
+                self._state.condition.notify_all()
+            while not self._state.handlers_released:
+                self._state.condition.wait()
+
+        with self._lock:
+            self._call.start_server_batch(
+                cygrpc.Operations(
+                    (cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),)),
+                _RECEIVE_CLOSE_ON_SERVER_TAG)
+            self._call.start_server_batch(
+                cygrpc.Operations(
+                    (cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
+                _RECEIVE_MESSAGE_TAG)
+        first_event = self._completion_queue.poll()
+        if _is_cancellation_event(first_event):
+            self._completion_queue.poll()
+        else:
+            with self._lock:
+                operations = (
+                    cygrpc.operation_send_initial_metadata(_EMPTY_METADATA,
+                                                           _EMPTY_FLAGS),
+                    cygrpc.operation_send_message(b'\x79\x57', _EMPTY_FLAGS),
+                    cygrpc.operation_send_status_from_server(
+                        _EMPTY_METADATA, cygrpc.StatusCode.ok, b'test details!',
+                        _EMPTY_FLAGS),)
+                self._call.start_server_batch(
+                    cygrpc.Operations(operations), _SERVER_COMPLETE_CALL_TAG)
+            self._completion_queue.poll()
+            self._completion_queue.poll()
 
 
 def _serve(state, server, server_completion_queue, thread_pool):
-  for _ in range(test_constants.RPC_CONCURRENCY):
-    call_completion_queue = cygrpc.CompletionQueue()
-    server.request_call(
-        call_completion_queue, server_completion_queue, _REQUEST_CALL_TAG)
-    rpc_event = server_completion_queue.poll()
-    thread_pool.submit(_Handler(state, call_completion_queue, rpc_event))
-    with state.condition:
-      state.handled_rpcs += 1
-      if test_constants.RPC_CONCURRENCY <= state.handled_rpcs:
-        state.condition.notify_all()
-  server_completion_queue.poll()
+    for _ in range(test_constants.RPC_CONCURRENCY):
+        call_completion_queue = cygrpc.CompletionQueue()
+        server.request_call(call_completion_queue, server_completion_queue,
+                            _REQUEST_CALL_TAG)
+        rpc_event = server_completion_queue.poll()
+        thread_pool.submit(_Handler(state, call_completion_queue, rpc_event))
+        with state.condition:
+            state.handled_rpcs += 1
+            if test_constants.RPC_CONCURRENCY <= state.handled_rpcs:
+                state.condition.notify_all()
+    server_completion_queue.poll()
 
 
 class _QueueDriver(object):
 
-  def __init__(self, condition, completion_queue, due):
-    self._condition = condition
-    self._completion_queue = completion_queue
-    self._due = due
-    self._events = []
-    self._returned = False
-
-  def start(self):
-    def in_thread():
-      while True:
-        event = self._completion_queue.poll()
+    def __init__(self, condition, completion_queue, due):
+        self._condition = condition
+        self._completion_queue = completion_queue
+        self._due = due
+        self._events = []
+        self._returned = False
+
+    def start(self):
+
+        def in_thread():
+            while True:
+                event = self._completion_queue.poll()
+                with self._condition:
+                    self._events.append(event)
+                    self._due.remove(event.tag)
+                    self._condition.notify_all()
+                    if not self._due:
+                        self._returned = True
+                        return
+
+        thread = threading.Thread(target=in_thread)
+        thread.start()
+
+    def events(self, at_least):
         with self._condition:
-          self._events.append(event)
-          self._due.remove(event.tag)
-          self._condition.notify_all()
-          if not self._due:
-            self._returned = True
-            return
-    thread = threading.Thread(target=in_thread)
-    thread.start()
-
-  def events(self, at_least):
-    with self._condition:
-      while len(self._events) < at_least:
-        self._condition.wait()
-      return tuple(self._events)
+            while len(self._events) < at_least:
+                self._condition.wait()
+            return tuple(self._events)
 
 
 class CancelManyCallsTest(unittest.TestCase):
 
-  def testCancelManyCalls(self):
-    server_thread_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-
-    server_completion_queue = cygrpc.CompletionQueue()
-    server = cygrpc.Server(cygrpc.ChannelArgs([]))
-    server.register_completion_queue(server_completion_queue)
-    port = server.add_http2_port(b'[::]:0')
-    server.start()
-    channel = cygrpc.Channel('localhost:{}'.format(port).encode(),
-                             cygrpc.ChannelArgs([]))
-
-    state = _State()
-
-    server_thread_args = (
-        state, server, server_completion_queue, server_thread_pool,)
-    server_thread = threading.Thread(target=_serve, args=server_thread_args)
-    server_thread.start()
-
-    client_condition = threading.Condition()
-    client_due = set()
-    client_completion_queue = cygrpc.CompletionQueue()
-    client_driver = _QueueDriver(
-        client_condition, client_completion_queue, client_due)
-    client_driver.start()
-
-    with client_condition:
-      client_calls = []
-      for index in range(test_constants.RPC_CONCURRENCY):
-        client_call = channel.create_call(
-            None, _EMPTY_FLAGS, client_completion_queue, b'/twinkies', None,
-            _INFINITE_FUTURE)
-        operations = (
-            cygrpc.operation_send_initial_metadata(
-                _EMPTY_METADATA, _EMPTY_FLAGS),
-            cygrpc.operation_send_message(b'\x45\x56', _EMPTY_FLAGS),
-            cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
-            cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
-            cygrpc.operation_receive_message(_EMPTY_FLAGS),
-            cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
-        )
-        tag = 'client_complete_call_{0:04d}_tag'.format(index)
-        client_call.start_client_batch(cygrpc.Operations(operations), tag)
-        client_due.add(tag)
-        client_calls.append(client_call)
-
-    with state.condition:
-      while True:
-        if state.parked_handlers < test_constants.THREAD_CONCURRENCY:
-          state.condition.wait()
-        elif state.handled_rpcs < test_constants.RPC_CONCURRENCY:
-          state.condition.wait()
-        else:
-          state.handlers_released = True
-          state.condition.notify_all()
-          break
-
-    client_driver.events(
-        test_constants.RPC_CONCURRENCY * _SUCCESS_CALL_FRACTION)
-    with client_condition:
-      for client_call in client_calls:
-        client_call.cancel()
-
-    with state.condition:
-      server.shutdown(server_completion_queue, _SERVER_SHUTDOWN_TAG)
+    def testCancelManyCalls(self):
+        server_thread_pool = logging_pool.pool(
+            test_constants.THREAD_CONCURRENCY)
+
+        server_completion_queue = cygrpc.CompletionQueue()
+        server = cygrpc.Server(cygrpc.ChannelArgs([]))
+        server.register_completion_queue(server_completion_queue)
+        port = server.add_http2_port(b'[::]:0')
+        server.start()
+        channel = cygrpc.Channel('localhost:{}'.format(port).encode(),
+                                 cygrpc.ChannelArgs([]))
+
+        state = _State()
+
+        server_thread_args = (
+            state,
+            server,
+            server_completion_queue,
+            server_thread_pool,)
+        server_thread = threading.Thread(target=_serve, args=server_thread_args)
+        server_thread.start()
+
+        client_condition = threading.Condition()
+        client_due = set()
+        client_completion_queue = cygrpc.CompletionQueue()
+        client_driver = _QueueDriver(client_condition, client_completion_queue,
+                                     client_due)
+        client_driver.start()
+
+        with client_condition:
+            client_calls = []
+            for index in range(test_constants.RPC_CONCURRENCY):
+                client_call = channel.create_call(
+                    None, _EMPTY_FLAGS, client_completion_queue, b'/twinkies',
+                    None, _INFINITE_FUTURE)
+                operations = (
+                    cygrpc.operation_send_initial_metadata(_EMPTY_METADATA,
+                                                           _EMPTY_FLAGS),
+                    cygrpc.operation_send_message(b'\x45\x56', _EMPTY_FLAGS),
+                    cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
+                    cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
+                    cygrpc.operation_receive_message(_EMPTY_FLAGS),
+                    cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),)
+                tag = 'client_complete_call_{0:04d}_tag'.format(index)
+                client_call.start_client_batch(
+                    cygrpc.Operations(operations), tag)
+                client_due.add(tag)
+                client_calls.append(client_call)
+
+        with state.condition:
+            while True:
+                if state.parked_handlers < test_constants.THREAD_CONCURRENCY:
+                    state.condition.wait()
+                elif state.handled_rpcs < test_constants.RPC_CONCURRENCY:
+                    state.condition.wait()
+                else:
+                    state.handlers_released = True
+                    state.condition.notify_all()
+                    break
+
+        client_driver.events(test_constants.RPC_CONCURRENCY *
+                             _SUCCESS_CALL_FRACTION)
+        with client_condition:
+            for client_call in client_calls:
+                client_call.cancel()
+
+        with state.condition:
+            server.shutdown(server_completion_queue, _SERVER_SHUTDOWN_TAG)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_cython/_channel_test.py b/src/python/grpcio_tests/tests/unit/_cython/_channel_test.py
index f9c8a3ac62bb8401531a5adcac7143a9bb809697..0ca06868b2d781c0d2fd5ccc4846c8fcc83eb834 100644
--- a/src/python/grpcio_tests/tests/unit/_cython/_channel_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/_channel_test.py
@@ -37,46 +37,49 @@ from tests.unit.framework.common import test_constants
 
 
 def _channel_and_completion_queue():
-  channel = cygrpc.Channel(b'localhost:54321', cygrpc.ChannelArgs(()))
-  completion_queue = cygrpc.CompletionQueue()
-  return channel, completion_queue
+    channel = cygrpc.Channel(b'localhost:54321', cygrpc.ChannelArgs(()))
+    completion_queue = cygrpc.CompletionQueue()
+    return channel, completion_queue
 
 
 def _connectivity_loop(channel, completion_queue):
-  for _ in range(100):
-    connectivity = channel.check_connectivity_state(True)
-    channel.watch_connectivity_state(
-        connectivity, cygrpc.Timespec(time.time() + 0.2), completion_queue,
-        None)
-    completion_queue.poll(deadline=cygrpc.Timespec(float('+inf')))
+    for _ in range(100):
+        connectivity = channel.check_connectivity_state(True)
+        channel.watch_connectivity_state(connectivity,
+                                         cygrpc.Timespec(time.time() + 0.2),
+                                         completion_queue, None)
+        completion_queue.poll(deadline=cygrpc.Timespec(float('+inf')))
 
 
 def _create_loop_destroy():
-  channel, completion_queue = _channel_and_completion_queue()
-  _connectivity_loop(channel, completion_queue)
-  completion_queue.shutdown()
+    channel, completion_queue = _channel_and_completion_queue()
+    _connectivity_loop(channel, completion_queue)
+    completion_queue.shutdown()
 
 
 def _in_parallel(behavior, arguments):
-  threads = tuple(
-      threading.Thread(target=behavior, args=arguments)
-      for _ in range(test_constants.THREAD_CONCURRENCY))
-  for thread in threads:
-    thread.start()
-  for thread in threads:
-    thread.join()
+    threads = tuple(
+        threading.Thread(
+            target=behavior, args=arguments)
+        for _ in range(test_constants.THREAD_CONCURRENCY))
+    for thread in threads:
+        thread.start()
+    for thread in threads:
+        thread.join()
 
 
 class ChannelTest(unittest.TestCase):
 
-  def test_single_channel_lonely_connectivity(self):
-    channel, completion_queue = _channel_and_completion_queue()
-    _in_parallel(_connectivity_loop, (channel, completion_queue,))
-    completion_queue.shutdown()
+    def test_single_channel_lonely_connectivity(self):
+        channel, completion_queue = _channel_and_completion_queue()
+        _in_parallel(_connectivity_loop, (
+            channel,
+            completion_queue,))
+        completion_queue.shutdown()
 
-  def test_multiple_channels_lonely_connectivity(self):
-    _in_parallel(_create_loop_destroy, ())
+    def test_multiple_channels_lonely_connectivity(self):
+        _in_parallel(_create_loop_destroy, ())
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py b/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py
index 2ae5285232c2061f2b21acba0478f28e2c014165..9fbfcbb9c021d56715b8daed38a9b04fe753b21f 100644
--- a/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Test a corner-case at the level of the Cython API."""
 
 import threading
@@ -41,212 +40,221 @@ _EMPTY_METADATA = cygrpc.Metadata(())
 
 class _ServerDriver(object):
 
-  def __init__(self, completion_queue, shutdown_tag):
-    self._condition = threading.Condition()
-    self._completion_queue = completion_queue
-    self._shutdown_tag = shutdown_tag
-    self._events = []
-    self._saw_shutdown_tag = False
-
-  def start(self):
-    def in_thread():
-      while True:
-        event = self._completion_queue.poll()
+    def __init__(self, completion_queue, shutdown_tag):
+        self._condition = threading.Condition()
+        self._completion_queue = completion_queue
+        self._shutdown_tag = shutdown_tag
+        self._events = []
+        self._saw_shutdown_tag = False
+
+    def start(self):
+
+        def in_thread():
+            while True:
+                event = self._completion_queue.poll()
+                with self._condition:
+                    self._events.append(event)
+                    self._condition.notify()
+                    if event.tag is self._shutdown_tag:
+                        self._saw_shutdown_tag = True
+                        break
+
+        thread = threading.Thread(target=in_thread)
+        thread.start()
+
+    def done(self):
+        with self._condition:
+            return self._saw_shutdown_tag
+
+    def first_event(self):
+        with self._condition:
+            while not self._events:
+                self._condition.wait()
+            return self._events[0]
+
+    def events(self):
         with self._condition:
-          self._events.append(event)
-          self._condition.notify()
-          if event.tag is self._shutdown_tag:
-            self._saw_shutdown_tag = True
-            break
-    thread = threading.Thread(target=in_thread)
-    thread.start()
-
-  def done(self):
-    with self._condition:
-      return self._saw_shutdown_tag
-
-  def first_event(self):
-    with self._condition:
-      while not self._events:
-        self._condition.wait()
-      return self._events[0]
-
-  def events(self):
-    with self._condition:
-      while not self._saw_shutdown_tag:
-        self._condition.wait()
-      return tuple(self._events)
+            while not self._saw_shutdown_tag:
+                self._condition.wait()
+            return tuple(self._events)
 
 
 class _QueueDriver(object):
 
-  def __init__(self, condition, completion_queue, due):
-    self._condition = condition
-    self._completion_queue = completion_queue
-    self._due = due
-    self._events = []
-    self._returned = False
-
-  def start(self):
-    def in_thread():
-      while True:
-        event = self._completion_queue.poll()
+    def __init__(self, condition, completion_queue, due):
+        self._condition = condition
+        self._completion_queue = completion_queue
+        self._due = due
+        self._events = []
+        self._returned = False
+
+    def start(self):
+
+        def in_thread():
+            while True:
+                event = self._completion_queue.poll()
+                with self._condition:
+                    self._events.append(event)
+                    self._due.remove(event.tag)
+                    self._condition.notify_all()
+                    if not self._due:
+                        self._returned = True
+                        return
+
+        thread = threading.Thread(target=in_thread)
+        thread.start()
+
+    def done(self):
+        with self._condition:
+            return self._returned
+
+    def event_with_tag(self, tag):
+        with self._condition:
+            while True:
+                for event in self._events:
+                    if event.tag is tag:
+                        return event
+                self._condition.wait()
+
+    def events(self):
         with self._condition:
-          self._events.append(event)
-          self._due.remove(event.tag)
-          self._condition.notify_all()
-          if not self._due:
-            self._returned = True
-            return
-    thread = threading.Thread(target=in_thread)
-    thread.start()
-
-  def done(self):
-    with self._condition:
-      return self._returned
-
-  def event_with_tag(self, tag):
-    with self._condition:
-      while True:
-        for event in self._events:
-          if event.tag is tag:
-            return event
-        self._condition.wait()
-
-  def events(self):
-    with self._condition:
-      while not self._returned:
-        self._condition.wait()
-      return tuple(self._events)
+            while not self._returned:
+                self._condition.wait()
+            return tuple(self._events)
 
 
 class ReadSomeButNotAllResponsesTest(unittest.TestCase):
 
-  def testReadSomeButNotAllResponses(self):
-    server_completion_queue = cygrpc.CompletionQueue()
-    server = cygrpc.Server(cygrpc.ChannelArgs([]))
-    server.register_completion_queue(server_completion_queue)
-    port = server.add_http2_port(b'[::]:0')
-    server.start()
-    channel = cygrpc.Channel('localhost:{}'.format(port).encode(),
-                             cygrpc.ChannelArgs([]))
-
-    server_shutdown_tag = 'server_shutdown_tag'
-    server_driver = _ServerDriver(server_completion_queue, server_shutdown_tag)
-    server_driver.start()
-
-    client_condition = threading.Condition()
-    client_due = set()
-    client_completion_queue = cygrpc.CompletionQueue()
-    client_driver = _QueueDriver(
-        client_condition, client_completion_queue, client_due)
-    client_driver.start()
-
-    server_call_condition = threading.Condition()
-    server_send_initial_metadata_tag = 'server_send_initial_metadata_tag'
-    server_send_first_message_tag = 'server_send_first_message_tag'
-    server_send_second_message_tag = 'server_send_second_message_tag'
-    server_complete_rpc_tag = 'server_complete_rpc_tag'
-    server_call_due = set((
-        server_send_initial_metadata_tag,
-        server_send_first_message_tag,
-        server_send_second_message_tag,
-        server_complete_rpc_tag,
-    ))
-    server_call_completion_queue = cygrpc.CompletionQueue()
-    server_call_driver = _QueueDriver(
-        server_call_condition, server_call_completion_queue, server_call_due)
-    server_call_driver.start()
-
-    server_rpc_tag = 'server_rpc_tag'
-    request_call_result = server.request_call(
-        server_call_completion_queue, server_completion_queue, server_rpc_tag)
-
-    client_call = channel.create_call(
-        None, _EMPTY_FLAGS, client_completion_queue, b'/twinkies', None,
-        _INFINITE_FUTURE)
-    client_receive_initial_metadata_tag = 'client_receive_initial_metadata_tag'
-    client_complete_rpc_tag = 'client_complete_rpc_tag'
-    with client_condition:
-      client_receive_initial_metadata_start_batch_result = (
-          client_call.start_client_batch(cygrpc.Operations([
-              cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
-          ]), client_receive_initial_metadata_tag))
-      client_due.add(client_receive_initial_metadata_tag)
-      client_complete_rpc_start_batch_result = (
-          client_call.start_client_batch(cygrpc.Operations([
-              cygrpc.operation_send_initial_metadata(
-                  _EMPTY_METADATA, _EMPTY_FLAGS),
-              cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
-              cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
-          ]), client_complete_rpc_tag))
-      client_due.add(client_complete_rpc_tag)
-
-    server_rpc_event = server_driver.first_event()
-
-    with server_call_condition:
-      server_send_initial_metadata_start_batch_result = (
-          server_rpc_event.operation_call.start_server_batch([
-              cygrpc.operation_send_initial_metadata(
-                  _EMPTY_METADATA, _EMPTY_FLAGS),
-          ], server_send_initial_metadata_tag))
-      server_send_first_message_start_batch_result = (
-          server_rpc_event.operation_call.start_server_batch([
-              cygrpc.operation_send_message(b'\x07', _EMPTY_FLAGS),
-          ], server_send_first_message_tag))
-    server_send_initial_metadata_event = server_call_driver.event_with_tag(
-        server_send_initial_metadata_tag)
-    server_send_first_message_event = server_call_driver.event_with_tag(
-        server_send_first_message_tag)
-    with server_call_condition:
-      server_send_second_message_start_batch_result = (
-          server_rpc_event.operation_call.start_server_batch([
-              cygrpc.operation_send_message(b'\x07', _EMPTY_FLAGS),
-          ], server_send_second_message_tag))
-      server_complete_rpc_start_batch_result = (
-          server_rpc_event.operation_call.start_server_batch([
-              cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),
-              cygrpc.operation_send_status_from_server(
-                  cygrpc.Metadata(()), cygrpc.StatusCode.ok, b'test details',
-                  _EMPTY_FLAGS),
-          ], server_complete_rpc_tag))
-    server_send_second_message_event = server_call_driver.event_with_tag(
-        server_send_second_message_tag)
-    server_complete_rpc_event = server_call_driver.event_with_tag(
-        server_complete_rpc_tag)
-    server_call_driver.events()
-
-    with client_condition:
-      client_receive_first_message_tag = 'client_receive_first_message_tag'
-      client_receive_first_message_start_batch_result = (
-          client_call.start_client_batch(cygrpc.Operations([
-              cygrpc.operation_receive_message(_EMPTY_FLAGS),
-          ]), client_receive_first_message_tag))
-      client_due.add(client_receive_first_message_tag)
-    client_receive_first_message_event = client_driver.event_with_tag(
-        client_receive_first_message_tag)
-
-    client_call_cancel_result = client_call.cancel()
-    client_driver.events()
-
-    server.shutdown(server_completion_queue, server_shutdown_tag)
-    server.cancel_all_calls()
-    server_driver.events()
-
-    self.assertEqual(cygrpc.CallError.ok, request_call_result)
-    self.assertEqual(
-        cygrpc.CallError.ok, server_send_initial_metadata_start_batch_result)
-    self.assertEqual(
-        cygrpc.CallError.ok, client_receive_initial_metadata_start_batch_result)
-    self.assertEqual(
-        cygrpc.CallError.ok, client_complete_rpc_start_batch_result)
-    self.assertEqual(cygrpc.CallError.ok, client_call_cancel_result)
-    self.assertIs(server_rpc_tag, server_rpc_event.tag)
-    self.assertEqual(
-        cygrpc.CompletionType.operation_complete, server_rpc_event.type)
-    self.assertIsInstance(server_rpc_event.operation_call, cygrpc.Call)
-    self.assertEqual(0, len(server_rpc_event.batch_operations))
+    def testReadSomeButNotAllResponses(self):
+        server_completion_queue = cygrpc.CompletionQueue()
+        server = cygrpc.Server(cygrpc.ChannelArgs([]))
+        server.register_completion_queue(server_completion_queue)
+        port = server.add_http2_port(b'[::]:0')
+        server.start()
+        channel = cygrpc.Channel('localhost:{}'.format(port).encode(),
+                                 cygrpc.ChannelArgs([]))
+
+        server_shutdown_tag = 'server_shutdown_tag'
+        server_driver = _ServerDriver(server_completion_queue,
+                                      server_shutdown_tag)
+        server_driver.start()
+
+        client_condition = threading.Condition()
+        client_due = set()
+        client_completion_queue = cygrpc.CompletionQueue()
+        client_driver = _QueueDriver(client_condition, client_completion_queue,
+                                     client_due)
+        client_driver.start()
+
+        server_call_condition = threading.Condition()
+        server_send_initial_metadata_tag = 'server_send_initial_metadata_tag'
+        server_send_first_message_tag = 'server_send_first_message_tag'
+        server_send_second_message_tag = 'server_send_second_message_tag'
+        server_complete_rpc_tag = 'server_complete_rpc_tag'
+        server_call_due = set((
+            server_send_initial_metadata_tag,
+            server_send_first_message_tag,
+            server_send_second_message_tag,
+            server_complete_rpc_tag,))
+        server_call_completion_queue = cygrpc.CompletionQueue()
+        server_call_driver = _QueueDriver(server_call_condition,
+                                          server_call_completion_queue,
+                                          server_call_due)
+        server_call_driver.start()
+
+        server_rpc_tag = 'server_rpc_tag'
+        request_call_result = server.request_call(server_call_completion_queue,
+                                                  server_completion_queue,
+                                                  server_rpc_tag)
+
+        client_call = channel.create_call(None, _EMPTY_FLAGS,
+                                          client_completion_queue, b'/twinkies',
+                                          None, _INFINITE_FUTURE)
+        client_receive_initial_metadata_tag = 'client_receive_initial_metadata_tag'
+        client_complete_rpc_tag = 'client_complete_rpc_tag'
+        with client_condition:
+            client_receive_initial_metadata_start_batch_result = (
+                client_call.start_client_batch(
+                    cygrpc.Operations([
+                        cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
+                    ]), client_receive_initial_metadata_tag))
+            client_due.add(client_receive_initial_metadata_tag)
+            client_complete_rpc_start_batch_result = (
+                client_call.start_client_batch(
+                    cygrpc.Operations([
+                        cygrpc.operation_send_initial_metadata(_EMPTY_METADATA,
+                                                               _EMPTY_FLAGS),
+                        cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
+                        cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
+                    ]), client_complete_rpc_tag))
+            client_due.add(client_complete_rpc_tag)
+
+        server_rpc_event = server_driver.first_event()
+
+        with server_call_condition:
+            server_send_initial_metadata_start_batch_result = (
+                server_rpc_event.operation_call.start_server_batch([
+                    cygrpc.operation_send_initial_metadata(_EMPTY_METADATA,
+                                                           _EMPTY_FLAGS),
+                ], server_send_initial_metadata_tag))
+            server_send_first_message_start_batch_result = (
+                server_rpc_event.operation_call.start_server_batch([
+                    cygrpc.operation_send_message(b'\x07', _EMPTY_FLAGS),
+                ], server_send_first_message_tag))
+        server_send_initial_metadata_event = server_call_driver.event_with_tag(
+            server_send_initial_metadata_tag)
+        server_send_first_message_event = server_call_driver.event_with_tag(
+            server_send_first_message_tag)
+        with server_call_condition:
+            server_send_second_message_start_batch_result = (
+                server_rpc_event.operation_call.start_server_batch([
+                    cygrpc.operation_send_message(b'\x07', _EMPTY_FLAGS),
+                ], server_send_second_message_tag))
+            server_complete_rpc_start_batch_result = (
+                server_rpc_event.operation_call.start_server_batch([
+                    cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),
+                    cygrpc.operation_send_status_from_server(
+                        cygrpc.Metadata(()), cygrpc.StatusCode.ok,
+                        b'test details', _EMPTY_FLAGS),
+                ], server_complete_rpc_tag))
+        server_send_second_message_event = server_call_driver.event_with_tag(
+            server_send_second_message_tag)
+        server_complete_rpc_event = server_call_driver.event_with_tag(
+            server_complete_rpc_tag)
+        server_call_driver.events()
+
+        with client_condition:
+            client_receive_first_message_tag = 'client_receive_first_message_tag'
+            client_receive_first_message_start_batch_result = (
+                client_call.start_client_batch(
+                    cygrpc.Operations([
+                        cygrpc.operation_receive_message(_EMPTY_FLAGS),
+                    ]), client_receive_first_message_tag))
+            client_due.add(client_receive_first_message_tag)
+        client_receive_first_message_event = client_driver.event_with_tag(
+            client_receive_first_message_tag)
+
+        client_call_cancel_result = client_call.cancel()
+        client_driver.events()
+
+        server.shutdown(server_completion_queue, server_shutdown_tag)
+        server.cancel_all_calls()
+        server_driver.events()
+
+        self.assertEqual(cygrpc.CallError.ok, request_call_result)
+        self.assertEqual(cygrpc.CallError.ok,
+                         server_send_initial_metadata_start_batch_result)
+        self.assertEqual(cygrpc.CallError.ok,
+                         client_receive_initial_metadata_start_batch_result)
+        self.assertEqual(cygrpc.CallError.ok,
+                         client_complete_rpc_start_batch_result)
+        self.assertEqual(cygrpc.CallError.ok, client_call_cancel_result)
+        self.assertIs(server_rpc_tag, server_rpc_event.tag)
+        self.assertEqual(cygrpc.CompletionType.operation_complete,
+                         server_rpc_event.type)
+        self.assertIsInstance(server_rpc_event.operation_call, cygrpc.Call)
+        self.assertEqual(0, len(server_rpc_event.batch_operations))
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py b/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py
index 8dedebfabeee7e9607852c7308ce2eb15426db60..7aec316b95d4bca3f77bc7b02b73f4fcabde5b32 100644
--- a/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py
@@ -37,399 +37,421 @@ from tests.unit._cython import test_utilities
 from tests.unit import test_common
 from tests.unit import resources
 
-
 _SSL_HOST_OVERRIDE = b'foo.test.google.fr'
 _CALL_CREDENTIALS_METADATA_KEY = 'call-creds-key'
 _CALL_CREDENTIALS_METADATA_VALUE = 'call-creds-value'
 _EMPTY_FLAGS = 0
 
+
 def _metadata_plugin_callback(context, callback):
-  callback(cygrpc.Metadata(
-      [cygrpc.Metadatum(_CALL_CREDENTIALS_METADATA_KEY,
-                        _CALL_CREDENTIALS_METADATA_VALUE)]),
-      cygrpc.StatusCode.ok, b'')
+    callback(
+        cygrpc.Metadata([
+            cygrpc.Metadatum(_CALL_CREDENTIALS_METADATA_KEY,
+                             _CALL_CREDENTIALS_METADATA_VALUE)
+        ]), cygrpc.StatusCode.ok, b'')
 
 
 class TypeSmokeTest(unittest.TestCase):
 
-  def testStringsInUtilitiesUpDown(self):
-    self.assertEqual(0, cygrpc.StatusCode.ok)
-    metadatum = cygrpc.Metadatum(b'a', b'b')
-    self.assertEqual(b'a', metadatum.key)
-    self.assertEqual(b'b', metadatum.value)
-    metadata = cygrpc.Metadata([metadatum])
-    self.assertEqual(1, len(metadata))
-    self.assertEqual(metadatum.key, metadata[0].key)
-
-  def testMetadataIteration(self):
-    metadata = cygrpc.Metadata([
-        cygrpc.Metadatum(b'a', b'b'), cygrpc.Metadatum(b'c', b'd')])
-    iterator = iter(metadata)
-    metadatum = next(iterator)
-    self.assertIsInstance(metadatum, cygrpc.Metadatum)
-    self.assertEqual(metadatum.key, b'a')
-    self.assertEqual(metadatum.value, b'b')
-    metadatum = next(iterator)
-    self.assertIsInstance(metadatum, cygrpc.Metadatum)
-    self.assertEqual(metadatum.key, b'c')
-    self.assertEqual(metadatum.value, b'd')
-    with self.assertRaises(StopIteration):
-      next(iterator)
-
-  def testOperationsIteration(self):
-    operations = cygrpc.Operations([
-        cygrpc.operation_send_message(b'asdf', _EMPTY_FLAGS)])
-    iterator = iter(operations)
-    operation = next(iterator)
-    self.assertIsInstance(operation, cygrpc.Operation)
-    # `Operation`s are write-only structures; can't directly debug anything out
-    # of them. Just check that we stop iterating.
-    with self.assertRaises(StopIteration):
-      next(iterator)
-
-  def testOperationFlags(self):
-    operation = cygrpc.operation_send_message(b'asdf',
-                                              cygrpc.WriteFlag.no_compress)
-    self.assertEqual(cygrpc.WriteFlag.no_compress, operation.flags)
-
-  def testTimespec(self):
-    now = time.time()
-    timespec = cygrpc.Timespec(now)
-    self.assertAlmostEqual(now, float(timespec), places=8)
-
-  def testCompletionQueueUpDown(self):
-    completion_queue = cygrpc.CompletionQueue()
-    del completion_queue
-
-  def testServerUpDown(self):
-    server = cygrpc.Server(cygrpc.ChannelArgs([]))
-    del server
-
-  def testChannelUpDown(self):
-    channel = cygrpc.Channel(b'[::]:0', cygrpc.ChannelArgs([]))
-    del channel
-
-  def testCredentialsMetadataPluginUpDown(self):
-    plugin = cygrpc.CredentialsMetadataPlugin(
-        lambda ignored_a, ignored_b: None, b'')
-    del plugin
-
-  def testCallCredentialsFromPluginUpDown(self):
-    plugin = cygrpc.CredentialsMetadataPlugin(_metadata_plugin_callback, b'')
-    call_credentials = cygrpc.call_credentials_metadata_plugin(plugin)
-    del plugin
-    del call_credentials
-
-  def testServerStartNoExplicitShutdown(self):
-    server = cygrpc.Server(cygrpc.ChannelArgs([]))
-    completion_queue = cygrpc.CompletionQueue()
-    server.register_completion_queue(completion_queue)
-    port = server.add_http2_port(b'[::]:0')
-    self.assertIsInstance(port, int)
-    server.start()
-    del server
-
-  def testServerStartShutdown(self):
-    completion_queue = cygrpc.CompletionQueue()
-    server = cygrpc.Server(cygrpc.ChannelArgs([]))
-    server.add_http2_port(b'[::]:0')
-    server.register_completion_queue(completion_queue)
-    server.start()
-    shutdown_tag = object()
-    server.shutdown(completion_queue, shutdown_tag)
-    event = completion_queue.poll()
-    self.assertEqual(cygrpc.CompletionType.operation_complete, event.type)
-    self.assertIs(shutdown_tag, event.tag)
-    del server
-    del completion_queue
+    def testStringsInUtilitiesUpDown(self):
+        self.assertEqual(0, cygrpc.StatusCode.ok)
+        metadatum = cygrpc.Metadatum(b'a', b'b')
+        self.assertEqual(b'a', metadatum.key)
+        self.assertEqual(b'b', metadatum.value)
+        metadata = cygrpc.Metadata([metadatum])
+        self.assertEqual(1, len(metadata))
+        self.assertEqual(metadatum.key, metadata[0].key)
+
+    def testMetadataIteration(self):
+        metadata = cygrpc.Metadata(
+            [cygrpc.Metadatum(b'a', b'b'), cygrpc.Metadatum(b'c', b'd')])
+        iterator = iter(metadata)
+        metadatum = next(iterator)
+        self.assertIsInstance(metadatum, cygrpc.Metadatum)
+        self.assertEqual(metadatum.key, b'a')
+        self.assertEqual(metadatum.value, b'b')
+        metadatum = next(iterator)
+        self.assertIsInstance(metadatum, cygrpc.Metadatum)
+        self.assertEqual(metadatum.key, b'c')
+        self.assertEqual(metadatum.value, b'd')
+        with self.assertRaises(StopIteration):
+            next(iterator)
+
+    def testOperationsIteration(self):
+        operations = cygrpc.Operations(
+            [cygrpc.operation_send_message(b'asdf', _EMPTY_FLAGS)])
+        iterator = iter(operations)
+        operation = next(iterator)
+        self.assertIsInstance(operation, cygrpc.Operation)
+        # `Operation`s are write-only structures; can't directly debug anything out
+        # of them. Just check that we stop iterating.
+        with self.assertRaises(StopIteration):
+            next(iterator)
+
+    def testOperationFlags(self):
+        operation = cygrpc.operation_send_message(b'asdf',
+                                                  cygrpc.WriteFlag.no_compress)
+        self.assertEqual(cygrpc.WriteFlag.no_compress, operation.flags)
+
+    def testTimespec(self):
+        now = time.time()
+        timespec = cygrpc.Timespec(now)
+        self.assertAlmostEqual(now, float(timespec), places=8)
+
+    def testCompletionQueueUpDown(self):
+        completion_queue = cygrpc.CompletionQueue()
+        del completion_queue
+
+    def testServerUpDown(self):
+        server = cygrpc.Server(cygrpc.ChannelArgs([]))
+        del server
+
+    def testChannelUpDown(self):
+        channel = cygrpc.Channel(b'[::]:0', cygrpc.ChannelArgs([]))
+        del channel
+
+    def testCredentialsMetadataPluginUpDown(self):
+        plugin = cygrpc.CredentialsMetadataPlugin(
+            lambda ignored_a, ignored_b: None, b'')
+        del plugin
+
+    def testCallCredentialsFromPluginUpDown(self):
+        plugin = cygrpc.CredentialsMetadataPlugin(_metadata_plugin_callback,
+                                                  b'')
+        call_credentials = cygrpc.call_credentials_metadata_plugin(plugin)
+        del plugin
+        del call_credentials
+
+    def testServerStartNoExplicitShutdown(self):
+        server = cygrpc.Server(cygrpc.ChannelArgs([]))
+        completion_queue = cygrpc.CompletionQueue()
+        server.register_completion_queue(completion_queue)
+        port = server.add_http2_port(b'[::]:0')
+        self.assertIsInstance(port, int)
+        server.start()
+        del server
+
+    def testServerStartShutdown(self):
+        completion_queue = cygrpc.CompletionQueue()
+        server = cygrpc.Server(cygrpc.ChannelArgs([]))
+        server.add_http2_port(b'[::]:0')
+        server.register_completion_queue(completion_queue)
+        server.start()
+        shutdown_tag = object()
+        server.shutdown(completion_queue, shutdown_tag)
+        event = completion_queue.poll()
+        self.assertEqual(cygrpc.CompletionType.operation_complete, event.type)
+        self.assertIs(shutdown_tag, event.tag)
+        del server
+        del completion_queue
 
 
 class ServerClientMixin(object):
 
-  def setUpMixin(self, server_credentials, client_credentials, host_override):
-    self.server_completion_queue = cygrpc.CompletionQueue()
-    self.server = cygrpc.Server(cygrpc.ChannelArgs([]))
-    self.server.register_completion_queue(self.server_completion_queue)
-    if server_credentials:
-      self.port = self.server.add_http2_port(b'[::]:0', server_credentials)
-    else:
-      self.port = self.server.add_http2_port(b'[::]:0')
-    self.server.start()
-    self.client_completion_queue = cygrpc.CompletionQueue()
-    if client_credentials:
-      client_channel_arguments = cygrpc.ChannelArgs([
-          cygrpc.ChannelArg(cygrpc.ChannelArgKey.ssl_target_name_override,
-                            host_override)])
-      self.client_channel = cygrpc.Channel(
-          'localhost:{}'.format(self.port).encode(), client_channel_arguments,
-          client_credentials)
-    else:
-      self.client_channel = cygrpc.Channel(
-          'localhost:{}'.format(self.port).encode(), cygrpc.ChannelArgs([]))
-    if host_override:
-      self.host_argument = None  # default host
-      self.expected_host = host_override
-    else:
-      # arbitrary host name necessitating no further identification
-      self.host_argument = b'hostess'
-      self.expected_host = self.host_argument
-
-  def tearDownMixin(self):
-    del self.server
-    del self.client_completion_queue
-    del self.server_completion_queue
-
-  def _perform_operations(self, operations, call, queue, deadline, description):
-    """Perform the list of operations with given call, queue, and deadline.
+    def setUpMixin(self, server_credentials, client_credentials, host_override):
+        self.server_completion_queue = cygrpc.CompletionQueue()
+        self.server = cygrpc.Server(cygrpc.ChannelArgs([]))
+        self.server.register_completion_queue(self.server_completion_queue)
+        if server_credentials:
+            self.port = self.server.add_http2_port(b'[::]:0',
+                                                   server_credentials)
+        else:
+            self.port = self.server.add_http2_port(b'[::]:0')
+        self.server.start()
+        self.client_completion_queue = cygrpc.CompletionQueue()
+        if client_credentials:
+            client_channel_arguments = cygrpc.ChannelArgs([
+                cygrpc.ChannelArg(cygrpc.ChannelArgKey.ssl_target_name_override,
+                                  host_override)
+            ])
+            self.client_channel = cygrpc.Channel(
+                'localhost:{}'.format(self.port).encode(),
+                client_channel_arguments, client_credentials)
+        else:
+            self.client_channel = cygrpc.Channel(
+                'localhost:{}'.format(self.port).encode(),
+                cygrpc.ChannelArgs([]))
+        if host_override:
+            self.host_argument = None  # default host
+            self.expected_host = host_override
+        else:
+            # arbitrary host name necessitating no further identification
+            self.host_argument = b'hostess'
+            self.expected_host = self.host_argument
+
+    def tearDownMixin(self):
+        del self.server
+        del self.client_completion_queue
+        del self.server_completion_queue
+
+    def _perform_operations(self, operations, call, queue, deadline,
+                            description):
+        """Perform the list of operations with given call, queue, and deadline.
 
     Invocation errors are reported with as an exception with `description` in
     the message. Performs the operations asynchronously, returning a future.
     """
-    def performer():
-      tag = object()
-      try:
-        call_result = call.start_client_batch(
-            cygrpc.Operations(operations), tag)
-        self.assertEqual(cygrpc.CallError.ok, call_result)
-        event = queue.poll(deadline)
-        self.assertEqual(cygrpc.CompletionType.operation_complete, event.type)
-        self.assertTrue(event.success)
-        self.assertIs(tag, event.tag)
-      except Exception as error:
-        raise Exception("Error in '{}': {}".format(description, error.message))
-      return event
-    return test_utilities.SimpleFuture(performer)
-
-  def testEcho(self):
-    DEADLINE = time.time()+5
-    DEADLINE_TOLERANCE = 0.25
-    CLIENT_METADATA_ASCII_KEY = b'key'
-    CLIENT_METADATA_ASCII_VALUE = b'val'
-    CLIENT_METADATA_BIN_KEY = b'key-bin'
-    CLIENT_METADATA_BIN_VALUE = b'\0'*1000
-    SERVER_INITIAL_METADATA_KEY = b'init_me_me_me'
-    SERVER_INITIAL_METADATA_VALUE = b'whodawha?'
-    SERVER_TRAILING_METADATA_KEY = b'california_is_in_a_drought'
-    SERVER_TRAILING_METADATA_VALUE = b'zomg it is'
-    SERVER_STATUS_CODE = cygrpc.StatusCode.ok
-    SERVER_STATUS_DETAILS = b'our work is never over'
-    REQUEST = b'in death a member of project mayhem has a name'
-    RESPONSE = b'his name is robert paulson'
-    METHOD = b'twinkies'
-
-    cygrpc_deadline = cygrpc.Timespec(DEADLINE)
-
-    server_request_tag = object()
-    request_call_result = self.server.request_call(
-        self.server_completion_queue, self.server_completion_queue,
-        server_request_tag)
-
-    self.assertEqual(cygrpc.CallError.ok, request_call_result)
-
-    client_call_tag = object()
-    client_call = self.client_channel.create_call(
-        None, 0, self.client_completion_queue, METHOD, self.host_argument,
-        cygrpc_deadline)
-    client_initial_metadata = cygrpc.Metadata([
-        cygrpc.Metadatum(CLIENT_METADATA_ASCII_KEY,
-                         CLIENT_METADATA_ASCII_VALUE),
-        cygrpc.Metadatum(CLIENT_METADATA_BIN_KEY, CLIENT_METADATA_BIN_VALUE)])
-    client_start_batch_result = client_call.start_client_batch([
-        cygrpc.operation_send_initial_metadata(client_initial_metadata,
-                                               _EMPTY_FLAGS),
-        cygrpc.operation_send_message(REQUEST, _EMPTY_FLAGS),
-        cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
-        cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
-        cygrpc.operation_receive_message(_EMPTY_FLAGS),
-        cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS)
-    ], client_call_tag)
-    self.assertEqual(cygrpc.CallError.ok, client_start_batch_result)
-    client_event_future = test_utilities.CompletionQueuePollFuture(
-        self.client_completion_queue, cygrpc_deadline)
-
-    request_event = self.server_completion_queue.poll(cygrpc_deadline)
-    self.assertEqual(cygrpc.CompletionType.operation_complete,
-                      request_event.type)
-    self.assertIsInstance(request_event.operation_call, cygrpc.Call)
-    self.assertIs(server_request_tag, request_event.tag)
-    self.assertEqual(0, len(request_event.batch_operations))
-    self.assertTrue(
-        test_common.metadata_transmitted(client_initial_metadata,
-                                         request_event.request_metadata))
-    self.assertEqual(METHOD, request_event.request_call_details.method)
-    self.assertEqual(self.expected_host,
-                     request_event.request_call_details.host)
-    self.assertLess(
-        abs(DEADLINE - float(request_event.request_call_details.deadline)),
-        DEADLINE_TOLERANCE)
-
-    server_call_tag = object()
-    server_call = request_event.operation_call
-    server_initial_metadata = cygrpc.Metadata([
-        cygrpc.Metadatum(SERVER_INITIAL_METADATA_KEY,
-                         SERVER_INITIAL_METADATA_VALUE)])
-    server_trailing_metadata = cygrpc.Metadata([
-        cygrpc.Metadatum(SERVER_TRAILING_METADATA_KEY,
-                         SERVER_TRAILING_METADATA_VALUE)])
-    server_start_batch_result = server_call.start_server_batch([
-        cygrpc.operation_send_initial_metadata(server_initial_metadata,
-                                               _EMPTY_FLAGS),
-        cygrpc.operation_receive_message(_EMPTY_FLAGS),
-        cygrpc.operation_send_message(RESPONSE, _EMPTY_FLAGS),
-        cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),
-        cygrpc.operation_send_status_from_server(
-            server_trailing_metadata, SERVER_STATUS_CODE,
-            SERVER_STATUS_DETAILS, _EMPTY_FLAGS)
-    ], server_call_tag)
-    self.assertEqual(cygrpc.CallError.ok, server_start_batch_result)
-
-    server_event = self.server_completion_queue.poll(cygrpc_deadline)
-    client_event = client_event_future.result()
-
-    self.assertEqual(6, len(client_event.batch_operations))
-    found_client_op_types = set()
-    for client_result in client_event.batch_operations:
-      # we expect each op type to be unique
-      self.assertNotIn(client_result.type, found_client_op_types)
-      found_client_op_types.add(client_result.type)
-      if client_result.type == cygrpc.OperationType.receive_initial_metadata:
-        self.assertTrue(
-            test_common.metadata_transmitted(server_initial_metadata,
-                                             client_result.received_metadata))
-      elif client_result.type == cygrpc.OperationType.receive_message:
-        self.assertEqual(RESPONSE, client_result.received_message.bytes())
-      elif client_result.type == cygrpc.OperationType.receive_status_on_client:
+
+        def performer():
+            tag = object()
+            try:
+                call_result = call.start_client_batch(
+                    cygrpc.Operations(operations), tag)
+                self.assertEqual(cygrpc.CallError.ok, call_result)
+                event = queue.poll(deadline)
+                self.assertEqual(cygrpc.CompletionType.operation_complete,
+                                 event.type)
+                self.assertTrue(event.success)
+                self.assertIs(tag, event.tag)
+            except Exception as error:
+                raise Exception("Error in '{}': {}".format(description,
+                                                           error.message))
+            return event
+
+        return test_utilities.SimpleFuture(performer)
+
+    def testEcho(self):
+        DEADLINE = time.time() + 5
+        DEADLINE_TOLERANCE = 0.25
+        CLIENT_METADATA_ASCII_KEY = b'key'
+        CLIENT_METADATA_ASCII_VALUE = b'val'
+        CLIENT_METADATA_BIN_KEY = b'key-bin'
+        CLIENT_METADATA_BIN_VALUE = b'\0' * 1000
+        SERVER_INITIAL_METADATA_KEY = b'init_me_me_me'
+        SERVER_INITIAL_METADATA_VALUE = b'whodawha?'
+        SERVER_TRAILING_METADATA_KEY = b'california_is_in_a_drought'
+        SERVER_TRAILING_METADATA_VALUE = b'zomg it is'
+        SERVER_STATUS_CODE = cygrpc.StatusCode.ok
+        SERVER_STATUS_DETAILS = b'our work is never over'
+        REQUEST = b'in death a member of project mayhem has a name'
+        RESPONSE = b'his name is robert paulson'
+        METHOD = b'twinkies'
+
+        cygrpc_deadline = cygrpc.Timespec(DEADLINE)
+
+        server_request_tag = object()
+        request_call_result = self.server.request_call(
+            self.server_completion_queue, self.server_completion_queue,
+            server_request_tag)
+
+        self.assertEqual(cygrpc.CallError.ok, request_call_result)
+
+        client_call_tag = object()
+        client_call = self.client_channel.create_call(
+            None, 0, self.client_completion_queue, METHOD, self.host_argument,
+            cygrpc_deadline)
+        client_initial_metadata = cygrpc.Metadata([
+            cygrpc.Metadatum(CLIENT_METADATA_ASCII_KEY,
+                             CLIENT_METADATA_ASCII_VALUE),
+            cygrpc.Metadatum(CLIENT_METADATA_BIN_KEY, CLIENT_METADATA_BIN_VALUE)
+        ])
+        client_start_batch_result = client_call.start_client_batch([
+            cygrpc.operation_send_initial_metadata(client_initial_metadata,
+                                                   _EMPTY_FLAGS),
+            cygrpc.operation_send_message(REQUEST, _EMPTY_FLAGS),
+            cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
+            cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
+            cygrpc.operation_receive_message(_EMPTY_FLAGS),
+            cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS)
+        ], client_call_tag)
+        self.assertEqual(cygrpc.CallError.ok, client_start_batch_result)
+        client_event_future = test_utilities.CompletionQueuePollFuture(
+            self.client_completion_queue, cygrpc_deadline)
+
+        request_event = self.server_completion_queue.poll(cygrpc_deadline)
+        self.assertEqual(cygrpc.CompletionType.operation_complete,
+                         request_event.type)
+        self.assertIsInstance(request_event.operation_call, cygrpc.Call)
+        self.assertIs(server_request_tag, request_event.tag)
+        self.assertEqual(0, len(request_event.batch_operations))
         self.assertTrue(
-            test_common.metadata_transmitted(server_trailing_metadata,
-                                             client_result.received_metadata))
-        self.assertEqual(SERVER_STATUS_DETAILS,
-                         client_result.received_status_details)
-        self.assertEqual(SERVER_STATUS_CODE, client_result.received_status_code)
-    self.assertEqual(set([
-          cygrpc.OperationType.send_initial_metadata,
-          cygrpc.OperationType.send_message,
-          cygrpc.OperationType.send_close_from_client,
-          cygrpc.OperationType.receive_initial_metadata,
-          cygrpc.OperationType.receive_message,
-          cygrpc.OperationType.receive_status_on_client
-      ]), found_client_op_types)
-
-    self.assertEqual(5, len(server_event.batch_operations))
-    found_server_op_types = set()
-    for server_result in server_event.batch_operations:
-      self.assertNotIn(client_result.type, found_server_op_types)
-      found_server_op_types.add(server_result.type)
-      if server_result.type == cygrpc.OperationType.receive_message:
-        self.assertEqual(REQUEST, server_result.received_message.bytes())
-      elif server_result.type == cygrpc.OperationType.receive_close_on_server:
-        self.assertFalse(server_result.received_cancelled)
-    self.assertEqual(set([
-          cygrpc.OperationType.send_initial_metadata,
-          cygrpc.OperationType.receive_message,
-          cygrpc.OperationType.send_message,
-          cygrpc.OperationType.receive_close_on_server,
-          cygrpc.OperationType.send_status_from_server
-      ]), found_server_op_types)
-
-    del client_call
-    del server_call
-
-  def test6522(self):
-    DEADLINE = time.time()+5
-    DEADLINE_TOLERANCE = 0.25
-    METHOD = b'twinkies'
-
-    cygrpc_deadline = cygrpc.Timespec(DEADLINE)
-    empty_metadata = cygrpc.Metadata([])
-
-    server_request_tag = object()
-    self.server.request_call(
-        self.server_completion_queue, self.server_completion_queue,
-        server_request_tag)
-    client_call = self.client_channel.create_call(
-        None, 0, self.client_completion_queue, METHOD, self.host_argument,
-        cygrpc_deadline)
-
-    # Prologue
-    def perform_client_operations(operations, description):
-      return self._perform_operations(
-          operations, client_call,
-          self.client_completion_queue, cygrpc_deadline, description)
-
-    client_event_future = perform_client_operations([
+            test_common.metadata_transmitted(client_initial_metadata,
+                                             request_event.request_metadata))
+        self.assertEqual(METHOD, request_event.request_call_details.method)
+        self.assertEqual(self.expected_host,
+                         request_event.request_call_details.host)
+        self.assertLess(
+            abs(DEADLINE - float(request_event.request_call_details.deadline)),
+            DEADLINE_TOLERANCE)
+
+        server_call_tag = object()
+        server_call = request_event.operation_call
+        server_initial_metadata = cygrpc.Metadata([
+            cygrpc.Metadatum(SERVER_INITIAL_METADATA_KEY,
+                             SERVER_INITIAL_METADATA_VALUE)
+        ])
+        server_trailing_metadata = cygrpc.Metadata([
+            cygrpc.Metadatum(SERVER_TRAILING_METADATA_KEY,
+                             SERVER_TRAILING_METADATA_VALUE)
+        ])
+        server_start_batch_result = server_call.start_server_batch([
+            cygrpc.operation_send_initial_metadata(
+                server_initial_metadata,
+                _EMPTY_FLAGS), cygrpc.operation_receive_message(_EMPTY_FLAGS),
+            cygrpc.operation_send_message(RESPONSE, _EMPTY_FLAGS),
+            cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),
+            cygrpc.operation_send_status_from_server(
+                server_trailing_metadata, SERVER_STATUS_CODE,
+                SERVER_STATUS_DETAILS, _EMPTY_FLAGS)
+        ], server_call_tag)
+        self.assertEqual(cygrpc.CallError.ok, server_start_batch_result)
+
+        server_event = self.server_completion_queue.poll(cygrpc_deadline)
+        client_event = client_event_future.result()
+
+        self.assertEqual(6, len(client_event.batch_operations))
+        found_client_op_types = set()
+        for client_result in client_event.batch_operations:
+            # we expect each op type to be unique
+            self.assertNotIn(client_result.type, found_client_op_types)
+            found_client_op_types.add(client_result.type)
+            if client_result.type == cygrpc.OperationType.receive_initial_metadata:
+                self.assertTrue(
+                    test_common.metadata_transmitted(
+                        server_initial_metadata,
+                        client_result.received_metadata))
+            elif client_result.type == cygrpc.OperationType.receive_message:
+                self.assertEqual(RESPONSE,
+                                 client_result.received_message.bytes())
+            elif client_result.type == cygrpc.OperationType.receive_status_on_client:
+                self.assertTrue(
+                    test_common.metadata_transmitted(
+                        server_trailing_metadata,
+                        client_result.received_metadata))
+                self.assertEqual(SERVER_STATUS_DETAILS,
+                                 client_result.received_status_details)
+                self.assertEqual(SERVER_STATUS_CODE,
+                                 client_result.received_status_code)
+        self.assertEqual(
+            set([
+                cygrpc.OperationType.send_initial_metadata,
+                cygrpc.OperationType.send_message,
+                cygrpc.OperationType.send_close_from_client,
+                cygrpc.OperationType.receive_initial_metadata,
+                cygrpc.OperationType.receive_message,
+                cygrpc.OperationType.receive_status_on_client
+            ]), found_client_op_types)
+
+        self.assertEqual(5, len(server_event.batch_operations))
+        found_server_op_types = set()
+        for server_result in server_event.batch_operations:
+            self.assertNotIn(client_result.type, found_server_op_types)
+            found_server_op_types.add(server_result.type)
+            if server_result.type == cygrpc.OperationType.receive_message:
+                self.assertEqual(REQUEST,
+                                 server_result.received_message.bytes())
+            elif server_result.type == cygrpc.OperationType.receive_close_on_server:
+                self.assertFalse(server_result.received_cancelled)
+        self.assertEqual(
+            set([
+                cygrpc.OperationType.send_initial_metadata,
+                cygrpc.OperationType.receive_message,
+                cygrpc.OperationType.send_message,
+                cygrpc.OperationType.receive_close_on_server,
+                cygrpc.OperationType.send_status_from_server
+            ]), found_server_op_types)
+
+        del client_call
+        del server_call
+
+    def test6522(self):
+        DEADLINE = time.time() + 5
+        DEADLINE_TOLERANCE = 0.25
+        METHOD = b'twinkies'
+
+        cygrpc_deadline = cygrpc.Timespec(DEADLINE)
+        empty_metadata = cygrpc.Metadata([])
+
+        server_request_tag = object()
+        self.server.request_call(self.server_completion_queue,
+                                 self.server_completion_queue,
+                                 server_request_tag)
+        client_call = self.client_channel.create_call(
+            None, 0, self.client_completion_queue, METHOD, self.host_argument,
+            cygrpc_deadline)
+
+        # Prologue
+        def perform_client_operations(operations, description):
+            return self._perform_operations(operations, client_call,
+                                            self.client_completion_queue,
+                                            cygrpc_deadline, description)
+
+        client_event_future = perform_client_operations([
             cygrpc.operation_send_initial_metadata(empty_metadata,
                                                    _EMPTY_FLAGS),
             cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
         ], "Client prologue")
 
-    request_event = self.server_completion_queue.poll(cygrpc_deadline)
-    server_call = request_event.operation_call
+        request_event = self.server_completion_queue.poll(cygrpc_deadline)
+        server_call = request_event.operation_call
 
-    def perform_server_operations(operations, description):
-      return self._perform_operations(
-          operations, server_call,
-          self.server_completion_queue, cygrpc_deadline, description)
+        def perform_server_operations(operations, description):
+            return self._perform_operations(operations, server_call,
+                                            self.server_completion_queue,
+                                            cygrpc_deadline, description)
 
-    server_event_future = perform_server_operations([
+        server_event_future = perform_server_operations([
             cygrpc.operation_send_initial_metadata(empty_metadata,
                                                    _EMPTY_FLAGS),
         ], "Server prologue")
 
-    client_event_future.result()  # force completion
-    server_event_future.result()
-
-    # Messaging
-    for _ in range(10):
-      client_event_future = perform_client_operations([
-              cygrpc.operation_send_message(b'', _EMPTY_FLAGS),
-              cygrpc.operation_receive_message(_EMPTY_FLAGS),
-          ], "Client message")
-      server_event_future = perform_server_operations([
-              cygrpc.operation_send_message(b'', _EMPTY_FLAGS),
-              cygrpc.operation_receive_message(_EMPTY_FLAGS),
-          ], "Server receive")
-
-      client_event_future.result()  # force completion
-      server_event_future.result()
-
-    # Epilogue
-    client_event_future = perform_client_operations([
+        client_event_future.result()  # force completion
+        server_event_future.result()
+
+        # Messaging
+        for _ in range(10):
+            client_event_future = perform_client_operations([
+                cygrpc.operation_send_message(b'', _EMPTY_FLAGS),
+                cygrpc.operation_receive_message(_EMPTY_FLAGS),
+            ], "Client message")
+            server_event_future = perform_server_operations([
+                cygrpc.operation_send_message(b'', _EMPTY_FLAGS),
+                cygrpc.operation_receive_message(_EMPTY_FLAGS),
+            ], "Server receive")
+
+            client_event_future.result()  # force completion
+            server_event_future.result()
+
+        # Epilogue
+        client_event_future = perform_client_operations([
             cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
             cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS)
         ], "Client epilogue")
 
-    server_event_future = perform_server_operations([
+        server_event_future = perform_server_operations([
             cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),
             cygrpc.operation_send_status_from_server(
                 empty_metadata, cygrpc.StatusCode.ok, b'', _EMPTY_FLAGS)
         ], "Server epilogue")
 
-    client_event_future.result()  # force completion
-    server_event_future.result()
+        client_event_future.result()  # force completion
+        server_event_future.result()
 
 
 class InsecureServerInsecureClient(unittest.TestCase, ServerClientMixin):
 
-  def setUp(self):
-    self.setUpMixin(None, None, None)
+    def setUp(self):
+        self.setUpMixin(None, None, None)
 
-  def tearDown(self):
-    self.tearDownMixin()
+    def tearDown(self):
+        self.tearDownMixin()
 
 
 class SecureServerSecureClient(unittest.TestCase, ServerClientMixin):
 
-  def setUp(self):
-    server_credentials = cygrpc.server_credentials_ssl(
-        None, [cygrpc.SslPemKeyCertPair(resources.private_key(),
-                                        resources.certificate_chain())], False)
-    client_credentials = cygrpc.channel_credentials_ssl(
-        resources.test_root_certificates(), None)
-    self.setUpMixin(server_credentials, client_credentials, _SSL_HOST_OVERRIDE)
+    def setUp(self):
+        server_credentials = cygrpc.server_credentials_ssl(None, [
+            cygrpc.SslPemKeyCertPair(resources.private_key(),
+                                     resources.certificate_chain())
+        ], False)
+        client_credentials = cygrpc.channel_credentials_ssl(
+            resources.test_root_certificates(), None)
+        self.setUpMixin(server_credentials, client_credentials,
+                        _SSL_HOST_OVERRIDE)
 
-  def tearDown(self):
-    self.tearDownMixin()
+    def tearDown(self):
+        self.tearDownMixin()
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_cython/test_utilities.py b/src/python/grpcio_tests/tests/unit/_cython/test_utilities.py
index 6280ce74c471255dbc05ae13019181a77cdef89a..dffb3733b6f581d56d5768cd935f75996f243cbf 100644
--- a/src/python/grpcio_tests/tests/unit/_cython/test_utilities.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/test_utilities.py
@@ -33,34 +33,35 @@ from grpc._cython import cygrpc
 
 
 class SimpleFuture(object):
-  """A simple future mechanism."""
+    """A simple future mechanism."""
 
-  def __init__(self, function, *args, **kwargs):
-    def wrapped_function():
-      try:
-        self._result = function(*args, **kwargs)
-      except Exception as error:
-        self._error = error
-    self._result = None
-    self._error = None
-    self._thread = threading.Thread(target=wrapped_function)
-    self._thread.start()
+    def __init__(self, function, *args, **kwargs):
 
-  def result(self):
-    """The resulting value of this future.
+        def wrapped_function():
+            try:
+                self._result = function(*args, **kwargs)
+            except Exception as error:
+                self._error = error
+
+        self._result = None
+        self._error = None
+        self._thread = threading.Thread(target=wrapped_function)
+        self._thread.start()
+
+    def result(self):
+        """The resulting value of this future.
 
     Re-raises any exceptions.
     """
-    self._thread.join()
-    if self._error:
-      # TODO(atash): re-raise exceptions in a way that preserves tracebacks
-      raise self._error
-    return self._result
+        self._thread.join()
+        if self._error:
+            # TODO(atash): re-raise exceptions in a way that preserves tracebacks
+            raise self._error
+        return self._result
 
 
 class CompletionQueuePollFuture(SimpleFuture):
 
-  def __init__(self, completion_queue, deadline):
-    super(CompletionQueuePollFuture, self).__init__(
-        lambda: completion_queue.poll(deadline))
-
+    def __init__(self, completion_queue, deadline):
+        super(CompletionQueuePollFuture,
+              self).__init__(lambda: completion_queue.poll(deadline))
diff --git a/src/python/grpcio_tests/tests/unit/_empty_message_test.py b/src/python/grpcio_tests/tests/unit/_empty_message_test.py
index 131f6e945253acae867894f34cedf1c6c60c5705..4588688ea603682858ffbc5f377d7cdacaea63a8 100644
--- a/src/python/grpcio_tests/tests/unit/_empty_message_test.py
+++ b/src/python/grpcio_tests/tests/unit/_empty_message_test.py
@@ -44,95 +44,94 @@ _STREAM_STREAM = '/test/StreamStream'
 
 
 def handle_unary_unary(request, servicer_context):
-  return _RESPONSE
+    return _RESPONSE
 
 
 def handle_unary_stream(request, servicer_context):
-  for _ in range(test_constants.STREAM_LENGTH):
-    yield _RESPONSE
+    for _ in range(test_constants.STREAM_LENGTH):
+        yield _RESPONSE
 
 
 def handle_stream_unary(request_iterator, servicer_context):
-  for request in request_iterator:
-    pass
-  return _RESPONSE
+    for request in request_iterator:
+        pass
+    return _RESPONSE
 
 
 def handle_stream_stream(request_iterator, servicer_context):
-  for request in request_iterator:
-    yield _RESPONSE
+    for request in request_iterator:
+        yield _RESPONSE
 
 
 class _MethodHandler(grpc.RpcMethodHandler):
 
-  def __init__(self, request_streaming, response_streaming):
-    self.request_streaming = request_streaming
-    self.response_streaming = response_streaming
-    self.request_deserializer = None
-    self.response_serializer = None
-    self.unary_unary = None
-    self.unary_stream = None
-    self.stream_unary = None
-    self.stream_stream = None
-    if self.request_streaming and self.response_streaming:
-      self.stream_stream = handle_stream_stream
-    elif self.request_streaming:
-      self.stream_unary = handle_stream_unary
-    elif self.response_streaming:
-      self.unary_stream = handle_unary_stream
-    else:
-      self.unary_unary = handle_unary_unary
+    def __init__(self, request_streaming, response_streaming):
+        self.request_streaming = request_streaming
+        self.response_streaming = response_streaming
+        self.request_deserializer = None
+        self.response_serializer = None
+        self.unary_unary = None
+        self.unary_stream = None
+        self.stream_unary = None
+        self.stream_stream = None
+        if self.request_streaming and self.response_streaming:
+            self.stream_stream = handle_stream_stream
+        elif self.request_streaming:
+            self.stream_unary = handle_stream_unary
+        elif self.response_streaming:
+            self.unary_stream = handle_unary_stream
+        else:
+            self.unary_unary = handle_unary_unary
 
 
 class _GenericHandler(grpc.GenericRpcHandler):
 
-  def service(self, handler_call_details):
-    if handler_call_details.method == _UNARY_UNARY:
-      return _MethodHandler(False, False)
-    elif handler_call_details.method == _UNARY_STREAM:
-      return _MethodHandler(False, True)
-    elif handler_call_details.method == _STREAM_UNARY:
-      return _MethodHandler(True, False)
-    elif handler_call_details.method == _STREAM_STREAM:
-      return _MethodHandler(True, True)
-    else:
-      return None
+    def service(self, handler_call_details):
+        if handler_call_details.method == _UNARY_UNARY:
+            return _MethodHandler(False, False)
+        elif handler_call_details.method == _UNARY_STREAM:
+            return _MethodHandler(False, True)
+        elif handler_call_details.method == _STREAM_UNARY:
+            return _MethodHandler(True, False)
+        elif handler_call_details.method == _STREAM_STREAM:
+            return _MethodHandler(True, True)
+        else:
+            return None
 
 
 class EmptyMessageTest(unittest.TestCase):
 
-  def setUp(self):
-    self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    self._server = grpc.server(
-        self._server_pool, handlers=(_GenericHandler(),))
-    port = self._server.add_insecure_port('[::]:0')
-    self._server.start()
-    self._channel = grpc.insecure_channel('localhost:%d' % port)
+    def setUp(self):
+        self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        self._server = grpc.server(
+            self._server_pool, handlers=(_GenericHandler(),))
+        port = self._server.add_insecure_port('[::]:0')
+        self._server.start()
+        self._channel = grpc.insecure_channel('localhost:%d' % port)
 
-  def tearDown(self):
-    self._server.stop(0)
+    def tearDown(self):
+        self._server.stop(0)
 
-  def testUnaryUnary(self):
-    response = self._channel.unary_unary(_UNARY_UNARY)(_REQUEST)
-    self.assertEqual(_RESPONSE, response)
+    def testUnaryUnary(self):
+        response = self._channel.unary_unary(_UNARY_UNARY)(_REQUEST)
+        self.assertEqual(_RESPONSE, response)
 
-  def testUnaryStream(self):
-    response_iterator = self._channel.unary_stream(_UNARY_STREAM)(_REQUEST)
-    self.assertSequenceEqual(
-        [_RESPONSE] * test_constants.STREAM_LENGTH, list(response_iterator))
+    def testUnaryStream(self):
+        response_iterator = self._channel.unary_stream(_UNARY_STREAM)(_REQUEST)
+        self.assertSequenceEqual([_RESPONSE] * test_constants.STREAM_LENGTH,
+                                 list(response_iterator))
 
-  def testStreamUnary(self):
-    response = self._channel.stream_unary(_STREAM_UNARY)(
-        [_REQUEST] * test_constants.STREAM_LENGTH)
-    self.assertEqual(_RESPONSE, response)
+    def testStreamUnary(self):
+        response = self._channel.stream_unary(_STREAM_UNARY)(iter(
+            [_REQUEST] * test_constants.STREAM_LENGTH))
+        self.assertEqual(_RESPONSE, response)
 
-  def testStreamStream(self):
-    response_iterator = self._channel.stream_stream(_STREAM_STREAM)(
-        [_REQUEST] * test_constants.STREAM_LENGTH)
-    self.assertSequenceEqual(
-        [_RESPONSE] * test_constants.STREAM_LENGTH, list(response_iterator))
+    def testStreamStream(self):
+        response_iterator = self._channel.stream_stream(_STREAM_STREAM)(iter(
+            [_REQUEST] * test_constants.STREAM_LENGTH))
+        self.assertSequenceEqual([_RESPONSE] * test_constants.STREAM_LENGTH,
+                                 list(response_iterator))
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
-
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_exit_scenarios.py b/src/python/grpcio_tests/tests/unit/_exit_scenarios.py
index b33802bf57294d7e45edbc5cf739cee43ad65b4d..22a664384850cf7bc9d1571ea8c1b4945ff9bdfc 100644
--- a/src/python/grpcio_tests/tests/unit/_exit_scenarios.py
+++ b/src/python/grpcio_tests/tests/unit/_exit_scenarios.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Defines a number of module-scope gRPC scenarios to test clean exit."""
 
 import argparse
@@ -73,88 +72,88 @@ TEST_TO_METHOD = {
 
 
 def hang_unary_unary(request, servicer_context):
-  time.sleep(WAIT_TIME)
+    time.sleep(WAIT_TIME)
 
 
 def hang_unary_stream(request, servicer_context):
-  time.sleep(WAIT_TIME)
+    time.sleep(WAIT_TIME)
 
 
 def hang_partial_unary_stream(request, servicer_context):
-  for _ in range(test_constants.STREAM_LENGTH // 2):
-    yield request
-  time.sleep(WAIT_TIME)
+    for _ in range(test_constants.STREAM_LENGTH // 2):
+        yield request
+    time.sleep(WAIT_TIME)
 
 
 def hang_stream_unary(request_iterator, servicer_context):
-  time.sleep(WAIT_TIME)
+    time.sleep(WAIT_TIME)
 
 
 def hang_partial_stream_unary(request_iterator, servicer_context):
-  for _ in range(test_constants.STREAM_LENGTH // 2):
-    next(request_iterator)
-  time.sleep(WAIT_TIME)
+    for _ in range(test_constants.STREAM_LENGTH // 2):
+        next(request_iterator)
+    time.sleep(WAIT_TIME)
 
 
 def hang_stream_stream(request_iterator, servicer_context):
-  time.sleep(WAIT_TIME)
+    time.sleep(WAIT_TIME)
 
 
 def hang_partial_stream_stream(request_iterator, servicer_context):
-  for _ in range(test_constants.STREAM_LENGTH // 2):
-    yield next(request_iterator)
-  time.sleep(WAIT_TIME)
+    for _ in range(test_constants.STREAM_LENGTH // 2):
+        yield next(request_iterator)
+    time.sleep(WAIT_TIME)
 
 
 class MethodHandler(grpc.RpcMethodHandler):
 
-  def __init__(self, request_streaming, response_streaming, partial_hang):
-    self.request_streaming = request_streaming
-    self.response_streaming = response_streaming
-    self.request_deserializer = None
-    self.response_serializer = None
-    self.unary_unary = None
-    self.unary_stream = None
-    self.stream_unary = None
-    self.stream_stream = None
-    if self.request_streaming and self.response_streaming:
-      if partial_hang:
-        self.stream_stream = hang_partial_stream_stream
-      else:
-        self.stream_stream = hang_stream_stream
-    elif self.request_streaming:
-      if partial_hang:
-        self.stream_unary = hang_partial_stream_unary
-      else:
-        self.stream_unary = hang_stream_unary
-    elif self.response_streaming:
-      if partial_hang:
-        self.unary_stream = hang_partial_unary_stream
-      else:
-        self.unary_stream = hang_unary_stream
-    else:
-      self.unary_unary = hang_unary_unary
+    def __init__(self, request_streaming, response_streaming, partial_hang):
+        self.request_streaming = request_streaming
+        self.response_streaming = response_streaming
+        self.request_deserializer = None
+        self.response_serializer = None
+        self.unary_unary = None
+        self.unary_stream = None
+        self.stream_unary = None
+        self.stream_stream = None
+        if self.request_streaming and self.response_streaming:
+            if partial_hang:
+                self.stream_stream = hang_partial_stream_stream
+            else:
+                self.stream_stream = hang_stream_stream
+        elif self.request_streaming:
+            if partial_hang:
+                self.stream_unary = hang_partial_stream_unary
+            else:
+                self.stream_unary = hang_stream_unary
+        elif self.response_streaming:
+            if partial_hang:
+                self.unary_stream = hang_partial_unary_stream
+            else:
+                self.unary_stream = hang_unary_stream
+        else:
+            self.unary_unary = hang_unary_unary
 
 
 class GenericHandler(grpc.GenericRpcHandler):
 
-  def service(self, handler_call_details):
-    if handler_call_details.method == UNARY_UNARY:
-      return MethodHandler(False, False, False)
-    elif handler_call_details.method == UNARY_STREAM:
-      return MethodHandler(False, True, False)
-    elif handler_call_details.method == STREAM_UNARY:
-      return MethodHandler(True, False, False)
-    elif handler_call_details.method == STREAM_STREAM:
-      return MethodHandler(True, True, False)
-    elif handler_call_details.method == PARTIAL_UNARY_STREAM:
-      return MethodHandler(False, True, True)
-    elif handler_call_details.method == PARTIAL_STREAM_UNARY:
-      return MethodHandler(True, False, True)
-    elif handler_call_details.method == PARTIAL_STREAM_STREAM:
-      return MethodHandler(True, True, True)
-    else:
-      return None
+    def service(self, handler_call_details):
+        if handler_call_details.method == UNARY_UNARY:
+            return MethodHandler(False, False, False)
+        elif handler_call_details.method == UNARY_STREAM:
+            return MethodHandler(False, True, False)
+        elif handler_call_details.method == STREAM_UNARY:
+            return MethodHandler(True, False, False)
+        elif handler_call_details.method == STREAM_STREAM:
+            return MethodHandler(True, True, False)
+        elif handler_call_details.method == PARTIAL_UNARY_STREAM:
+            return MethodHandler(False, True, True)
+        elif handler_call_details.method == PARTIAL_STREAM_UNARY:
+            return MethodHandler(True, False, True)
+        elif handler_call_details.method == PARTIAL_STREAM_STREAM:
+            return MethodHandler(True, True, True)
+        else:
+            return None
 
 
 # Traditional executors will not exit until all their
@@ -162,88 +161,88 @@ class GenericHandler(grpc.GenericRpcHandler):
 # never finish, we don't want to block exit on these jobs.
 class DaemonPool(object):
 
-  def submit(self, fn, *args, **kwargs):
-    thread = threading.Thread(target=fn, args=args, kwargs=kwargs)
-    thread.daemon = True
-    thread.start()
+    def submit(self, fn, *args, **kwargs):
+        thread = threading.Thread(target=fn, args=args, kwargs=kwargs)
+        thread.daemon = True
+        thread.start()
 
-  def shutdown(self, wait=True):
-    pass
+    def shutdown(self, wait=True):
+        pass
 
 
 def infinite_request_iterator():
-  while True:
-    yield REQUEST
+    while True:
+        yield REQUEST
 
 
 if __name__ == '__main__':
-  parser = argparse.ArgumentParser()
-  parser.add_argument('scenario', type=str)
-  parser.add_argument(
-      '--wait_for_interrupt', dest='wait_for_interrupt', action='store_true')
-  args = parser.parse_args()
-
-  if args.scenario == UNSTARTED_SERVER:
-    server = grpc.server(DaemonPool())
-    if args.wait_for_interrupt:
-      time.sleep(WAIT_TIME)
-  elif args.scenario == RUNNING_SERVER:
-    server = grpc.server(DaemonPool())
-    port = server.add_insecure_port('[::]:0')
-    server.start()
-    if args.wait_for_interrupt:
-      time.sleep(WAIT_TIME)
-  elif args.scenario == POLL_CONNECTIVITY_NO_SERVER:
-    channel = grpc.insecure_channel('localhost:12345')
-
-    def connectivity_callback(connectivity):
-      pass
-
-    channel.subscribe(connectivity_callback, try_to_connect=True)
-    if args.wait_for_interrupt:
-      time.sleep(WAIT_TIME)
-  elif args.scenario == POLL_CONNECTIVITY:
-    server = grpc.server(DaemonPool())
-    port = server.add_insecure_port('[::]:0')
-    server.start()
-    channel = grpc.insecure_channel('localhost:%d' % port)
-
-    def connectivity_callback(connectivity):
-      pass
-
-    channel.subscribe(connectivity_callback, try_to_connect=True)
-    if args.wait_for_interrupt:
-      time.sleep(WAIT_TIME)
-
-  else:
-    handler = GenericHandler()
-    server = grpc.server(DaemonPool())
-    port = server.add_insecure_port('[::]:0')
-    server.add_generic_rpc_handlers((handler,))
-    server.start()
-    channel = grpc.insecure_channel('localhost:%d' % port)
-
-    method = TEST_TO_METHOD[args.scenario]
-
-    if args.scenario == IN_FLIGHT_UNARY_UNARY_CALL:
-      multi_callable = channel.unary_unary(method)
-      future = multi_callable.future(REQUEST)
-      result, call = multi_callable.with_call(REQUEST)
-    elif (args.scenario == IN_FLIGHT_UNARY_STREAM_CALL or
-          args.scenario == IN_FLIGHT_PARTIAL_UNARY_STREAM_CALL):
-      multi_callable = channel.unary_stream(method)
-      response_iterator = multi_callable(REQUEST)
-      for response in response_iterator:
-        pass
-    elif (args.scenario == IN_FLIGHT_STREAM_UNARY_CALL or
-          args.scenario == IN_FLIGHT_PARTIAL_STREAM_UNARY_CALL):
-      multi_callable = channel.stream_unary(method)
-      future = multi_callable.future(infinite_request_iterator())
-      result, call = multi_callable.with_call(
-          [REQUEST] * test_constants.STREAM_LENGTH)
-    elif (args.scenario == IN_FLIGHT_STREAM_STREAM_CALL or
-          args.scenario == IN_FLIGHT_PARTIAL_STREAM_STREAM_CALL):
-      multi_callable = channel.stream_stream(method)
-      response_iterator = multi_callable(infinite_request_iterator())
-      for response in response_iterator:
-        pass
+    parser = argparse.ArgumentParser()
+    parser.add_argument('scenario', type=str)
+    parser.add_argument(
+        '--wait_for_interrupt', dest='wait_for_interrupt', action='store_true')
+    args = parser.parse_args()
+
+    if args.scenario == UNSTARTED_SERVER:
+        server = grpc.server(DaemonPool())
+        if args.wait_for_interrupt:
+            time.sleep(WAIT_TIME)
+    elif args.scenario == RUNNING_SERVER:
+        server = grpc.server(DaemonPool())
+        port = server.add_insecure_port('[::]:0')
+        server.start()
+        if args.wait_for_interrupt:
+            time.sleep(WAIT_TIME)
+    elif args.scenario == POLL_CONNECTIVITY_NO_SERVER:
+        channel = grpc.insecure_channel('localhost:12345')
+
+        def connectivity_callback(connectivity):
+            pass
+
+        channel.subscribe(connectivity_callback, try_to_connect=True)
+        if args.wait_for_interrupt:
+            time.sleep(WAIT_TIME)
+    elif args.scenario == POLL_CONNECTIVITY:
+        server = grpc.server(DaemonPool())
+        port = server.add_insecure_port('[::]:0')
+        server.start()
+        channel = grpc.insecure_channel('localhost:%d' % port)
+
+        def connectivity_callback(connectivity):
+            pass
+
+        channel.subscribe(connectivity_callback, try_to_connect=True)
+        if args.wait_for_interrupt:
+            time.sleep(WAIT_TIME)
+
+    else:
+        handler = GenericHandler()
+        server = grpc.server(DaemonPool())
+        port = server.add_insecure_port('[::]:0')
+        server.add_generic_rpc_handlers((handler,))
+        server.start()
+        channel = grpc.insecure_channel('localhost:%d' % port)
+
+        method = TEST_TO_METHOD[args.scenario]
+
+        if args.scenario == IN_FLIGHT_UNARY_UNARY_CALL:
+            multi_callable = channel.unary_unary(method)
+            future = multi_callable.future(REQUEST)
+            result, call = multi_callable.with_call(REQUEST)
+        elif (args.scenario == IN_FLIGHT_UNARY_STREAM_CALL or
+              args.scenario == IN_FLIGHT_PARTIAL_UNARY_STREAM_CALL):
+            multi_callable = channel.unary_stream(method)
+            response_iterator = multi_callable(REQUEST)
+            for response in response_iterator:
+                pass
+        elif (args.scenario == IN_FLIGHT_STREAM_UNARY_CALL or
+              args.scenario == IN_FLIGHT_PARTIAL_STREAM_UNARY_CALL):
+            multi_callable = channel.stream_unary(method)
+            future = multi_callable.future(infinite_request_iterator())
+            result, call = multi_callable.with_call(
+                iter([REQUEST] * test_constants.STREAM_LENGTH))
+        elif (args.scenario == IN_FLIGHT_STREAM_STREAM_CALL or
+              args.scenario == IN_FLIGHT_PARTIAL_STREAM_STREAM_CALL):
+            multi_callable = channel.stream_stream(method)
+            response_iterator = multi_callable(infinite_request_iterator())
+            for response in response_iterator:
+                pass
diff --git a/src/python/grpcio_tests/tests/unit/_exit_test.py b/src/python/grpcio_tests/tests/unit/_exit_test.py
index 5a4a32887c3634cdd263b65831c8e65fa88bb65b..b99605dcb851c41fe63e0e9ef252a38af20e1b7f 100644
--- a/src/python/grpcio_tests/tests/unit/_exit_test.py
+++ b/src/python/grpcio_tests/tests/unit/_exit_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests clean exit of server/client on Python Interpreter exit/sigint.
 
 The tests in this module spawn a subprocess for each test case, the
@@ -45,15 +44,15 @@ import unittest
 
 from tests.unit import _exit_scenarios
 
-SCENARIO_FILE = os.path.abspath(os.path.join(
-    os.path.dirname(os.path.realpath(__file__)), '_exit_scenarios.py'))
+SCENARIO_FILE = os.path.abspath(
+    os.path.join(
+        os.path.dirname(os.path.realpath(__file__)), '_exit_scenarios.py'))
 INTERPRETER = sys.executable
 BASE_COMMAND = [INTERPRETER, SCENARIO_FILE]
 BASE_SIGTERM_COMMAND = BASE_COMMAND + ['--wait_for_interrupt']
 
 INIT_TIME = 1.0
 
-
 processes = []
 process_lock = threading.Lock()
 
@@ -61,126 +60,146 @@ process_lock = threading.Lock()
 # Make sure we attempt to clean up any
 # processes we may have left running
 def cleanup_processes():
-  with process_lock:
-    for process in processes:
-      try:
-        process.kill()
-      except Exception:
-        pass
+    with process_lock:
+        for process in processes:
+            try:
+                process.kill()
+            except Exception:
+                pass
+
+
 atexit.register(cleanup_processes)
 
 
 def interrupt_and_wait(process):
-  with process_lock:
-    processes.append(process)
-  time.sleep(INIT_TIME)
-  os.kill(process.pid, signal.SIGINT)
-  process.wait()
+    with process_lock:
+        processes.append(process)
+    time.sleep(INIT_TIME)
+    os.kill(process.pid, signal.SIGINT)
+    process.wait()
 
 
 def wait(process):
-  with process_lock:
-    processes.append(process)
-  process.wait()
+    with process_lock:
+        processes.append(process)
+    process.wait()
 
 
 @unittest.skip('https://github.com/grpc/grpc/issues/7311')
 class ExitTest(unittest.TestCase):
 
-  def test_unstarted_server(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.UNSTARTED_SERVER],
-        stdout=sys.stdout, stderr=sys.stderr)
-    wait(process)
-
-  def test_unstarted_server_terminate(self):
-    process = subprocess.Popen(
-        BASE_SIGTERM_COMMAND + [_exit_scenarios.UNSTARTED_SERVER],
-        stdout=sys.stdout)
-    interrupt_and_wait(process)
-
-  def test_running_server(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.RUNNING_SERVER],
-        stdout=sys.stdout, stderr=sys.stderr)
-    wait(process)
-
-  def test_running_server_terminate(self):
-    process = subprocess.Popen(
-        BASE_SIGTERM_COMMAND + [_exit_scenarios.RUNNING_SERVER],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
-
-  def test_poll_connectivity_no_server(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.POLL_CONNECTIVITY_NO_SERVER],
-        stdout=sys.stdout, stderr=sys.stderr)
-    wait(process)
-
-  def test_poll_connectivity_no_server_terminate(self):
-    process = subprocess.Popen(
-        BASE_SIGTERM_COMMAND + [_exit_scenarios.POLL_CONNECTIVITY_NO_SERVER],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
-
-  def test_poll_connectivity(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.POLL_CONNECTIVITY],
-        stdout=sys.stdout, stderr=sys.stderr)
-    wait(process)
-
-  def test_poll_connectivity_terminate(self):
-    process = subprocess.Popen(
-        BASE_SIGTERM_COMMAND + [_exit_scenarios.POLL_CONNECTIVITY],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
-
-  def test_in_flight_unary_unary_call(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_UNARY_UNARY_CALL],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
-
-  @unittest.skipIf(six.PY2, 'https://github.com/grpc/grpc/issues/6999')
-  def test_in_flight_unary_stream_call(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_UNARY_STREAM_CALL],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
-
-  def test_in_flight_stream_unary_call(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_STREAM_UNARY_CALL],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
-
-  @unittest.skipIf(six.PY2, 'https://github.com/grpc/grpc/issues/6999')
-  def test_in_flight_stream_stream_call(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_STREAM_STREAM_CALL],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
-
-  @unittest.skipIf(six.PY2, 'https://github.com/grpc/grpc/issues/6999')
-  def test_in_flight_partial_unary_stream_call(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_PARTIAL_UNARY_STREAM_CALL],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
-
-  def test_in_flight_partial_stream_unary_call(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_PARTIAL_STREAM_UNARY_CALL],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
-
-  @unittest.skipIf(six.PY2, 'https://github.com/grpc/grpc/issues/6999')
-  def test_in_flight_partial_stream_stream_call(self):
-    process = subprocess.Popen(
-        BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_PARTIAL_STREAM_STREAM_CALL],
-        stdout=sys.stdout, stderr=sys.stderr)
-    interrupt_and_wait(process)
+    def test_unstarted_server(self):
+        process = subprocess.Popen(
+            BASE_COMMAND + [_exit_scenarios.UNSTARTED_SERVER],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        wait(process)
+
+    def test_unstarted_server_terminate(self):
+        process = subprocess.Popen(
+            BASE_SIGTERM_COMMAND + [_exit_scenarios.UNSTARTED_SERVER],
+            stdout=sys.stdout)
+        interrupt_and_wait(process)
+
+    def test_running_server(self):
+        process = subprocess.Popen(
+            BASE_COMMAND + [_exit_scenarios.RUNNING_SERVER],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        wait(process)
+
+    def test_running_server_terminate(self):
+        process = subprocess.Popen(
+            BASE_SIGTERM_COMMAND + [_exit_scenarios.RUNNING_SERVER],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
+
+    def test_poll_connectivity_no_server(self):
+        process = subprocess.Popen(
+            BASE_COMMAND + [_exit_scenarios.POLL_CONNECTIVITY_NO_SERVER],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        wait(process)
+
+    def test_poll_connectivity_no_server_terminate(self):
+        process = subprocess.Popen(
+            BASE_SIGTERM_COMMAND +
+            [_exit_scenarios.POLL_CONNECTIVITY_NO_SERVER],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
+
+    def test_poll_connectivity(self):
+        process = subprocess.Popen(
+            BASE_COMMAND + [_exit_scenarios.POLL_CONNECTIVITY],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        wait(process)
+
+    def test_poll_connectivity_terminate(self):
+        process = subprocess.Popen(
+            BASE_SIGTERM_COMMAND + [_exit_scenarios.POLL_CONNECTIVITY],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
+
+    def test_in_flight_unary_unary_call(self):
+        process = subprocess.Popen(
+            BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_UNARY_UNARY_CALL],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
+
+    @unittest.skipIf(six.PY2, 'https://github.com/grpc/grpc/issues/6999')
+    def test_in_flight_unary_stream_call(self):
+        process = subprocess.Popen(
+            BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_UNARY_STREAM_CALL],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
+
+    def test_in_flight_stream_unary_call(self):
+        process = subprocess.Popen(
+            BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_STREAM_UNARY_CALL],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
+
+    @unittest.skipIf(six.PY2, 'https://github.com/grpc/grpc/issues/6999')
+    def test_in_flight_stream_stream_call(self):
+        process = subprocess.Popen(
+            BASE_COMMAND + [_exit_scenarios.IN_FLIGHT_STREAM_STREAM_CALL],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
+
+    @unittest.skipIf(six.PY2, 'https://github.com/grpc/grpc/issues/6999')
+    def test_in_flight_partial_unary_stream_call(self):
+        process = subprocess.Popen(
+            BASE_COMMAND +
+            [_exit_scenarios.IN_FLIGHT_PARTIAL_UNARY_STREAM_CALL],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
+
+    def test_in_flight_partial_stream_unary_call(self):
+        process = subprocess.Popen(
+            BASE_COMMAND +
+            [_exit_scenarios.IN_FLIGHT_PARTIAL_STREAM_UNARY_CALL],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
+
+    @unittest.skipIf(six.PY2, 'https://github.com/grpc/grpc/issues/6999')
+    def test_in_flight_partial_stream_stream_call(self):
+        process = subprocess.Popen(
+            BASE_COMMAND +
+            [_exit_scenarios.IN_FLIGHT_PARTIAL_STREAM_STREAM_CALL],
+            stdout=sys.stdout,
+            stderr=sys.stderr)
+        interrupt_and_wait(process)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_invalid_metadata_test.py b/src/python/grpcio_tests/tests/unit/_invalid_metadata_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..1b1b1bd598c412d3f391162f0c09f174efb4f74a
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/_invalid_metadata_test.py
@@ -0,0 +1,176 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"""Test of RPCs made against gRPC Python's application-layer API."""
+
+import unittest
+
+import grpc
+
+from tests.unit.framework.common import test_constants
+
+_SERIALIZE_REQUEST = lambda bytestring: bytestring * 2
+_DESERIALIZE_REQUEST = lambda bytestring: bytestring[len(bytestring) // 2:]
+_SERIALIZE_RESPONSE = lambda bytestring: bytestring * 3
+_DESERIALIZE_RESPONSE = lambda bytestring: bytestring[:len(bytestring) // 3]
+
+_UNARY_UNARY = '/test/UnaryUnary'
+_UNARY_STREAM = '/test/UnaryStream'
+_STREAM_UNARY = '/test/StreamUnary'
+_STREAM_STREAM = '/test/StreamStream'
+
+
+def _unary_unary_multi_callable(channel):
+    return channel.unary_unary(_UNARY_UNARY)
+
+
+def _unary_stream_multi_callable(channel):
+    return channel.unary_stream(
+        _UNARY_STREAM,
+        request_serializer=_SERIALIZE_REQUEST,
+        response_deserializer=_DESERIALIZE_RESPONSE)
+
+
+def _stream_unary_multi_callable(channel):
+    return channel.stream_unary(
+        _STREAM_UNARY,
+        request_serializer=_SERIALIZE_REQUEST,
+        response_deserializer=_DESERIALIZE_RESPONSE)
+
+
+def _stream_stream_multi_callable(channel):
+    return channel.stream_stream(_STREAM_STREAM)
+
+
+class InvalidMetadataTest(unittest.TestCase):
+
+    def setUp(self):
+        self._channel = grpc.insecure_channel('localhost:8080')
+        self._unary_unary = _unary_unary_multi_callable(self._channel)
+        self._unary_stream = _unary_stream_multi_callable(self._channel)
+        self._stream_unary = _stream_unary_multi_callable(self._channel)
+        self._stream_stream = _stream_stream_multi_callable(self._channel)
+
+    def testUnaryRequestBlockingUnaryResponse(self):
+        request = b'\x07\x08'
+        metadata = (('InVaLiD', 'UnaryRequestBlockingUnaryResponse'),)
+        expected_error_details = "metadata was invalid: %s" % metadata
+        with self.assertRaises(ValueError) as exception_context:
+            self._unary_unary(request, metadata=metadata)
+        self.assertIn(expected_error_details, str(exception_context.exception))
+
+    def testUnaryRequestBlockingUnaryResponseWithCall(self):
+        request = b'\x07\x08'
+        metadata = (('InVaLiD', 'UnaryRequestBlockingUnaryResponseWithCall'),)
+        expected_error_details = "metadata was invalid: %s" % metadata
+        with self.assertRaises(ValueError) as exception_context:
+            self._unary_unary.with_call(request, metadata=metadata)
+        self.assertIn(expected_error_details, str(exception_context.exception))
+
+    def testUnaryRequestFutureUnaryResponse(self):
+        request = b'\x07\x08'
+        metadata = (('InVaLiD', 'UnaryRequestFutureUnaryResponse'),)
+        expected_error_details = "metadata was invalid: %s" % metadata
+        response_future = self._unary_unary.future(request, metadata=metadata)
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            response_future.result()
+        self.assertEqual(exception_context.exception.details(),
+                         expected_error_details)
+        self.assertEqual(exception_context.exception.code(),
+                         grpc.StatusCode.INTERNAL)
+        self.assertEqual(response_future.details(), expected_error_details)
+        self.assertEqual(response_future.code(), grpc.StatusCode.INTERNAL)
+
+    def testUnaryRequestStreamResponse(self):
+        request = b'\x37\x58'
+        metadata = (('InVaLiD', 'UnaryRequestStreamResponse'),)
+        expected_error_details = "metadata was invalid: %s" % metadata
+        response_iterator = self._unary_stream(request, metadata=metadata)
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            next(response_iterator)
+        self.assertEqual(exception_context.exception.details(),
+                         expected_error_details)
+        self.assertEqual(exception_context.exception.code(),
+                         grpc.StatusCode.INTERNAL)
+        self.assertEqual(response_iterator.details(), expected_error_details)
+        self.assertEqual(response_iterator.code(), grpc.StatusCode.INTERNAL)
+
+    def testStreamRequestBlockingUnaryResponse(self):
+        request_iterator = (b'\x07\x08'
+                            for _ in range(test_constants.STREAM_LENGTH))
+        metadata = (('InVaLiD', 'StreamRequestBlockingUnaryResponse'),)
+        expected_error_details = "metadata was invalid: %s" % metadata
+        with self.assertRaises(ValueError) as exception_context:
+            self._stream_unary(request_iterator, metadata=metadata)
+        self.assertIn(expected_error_details, str(exception_context.exception))
+
+    def testStreamRequestBlockingUnaryResponseWithCall(self):
+        request_iterator = (b'\x07\x08'
+                            for _ in range(test_constants.STREAM_LENGTH))
+        metadata = (('InVaLiD', 'StreamRequestBlockingUnaryResponseWithCall'),)
+        expected_error_details = "metadata was invalid: %s" % metadata
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        with self.assertRaises(ValueError) as exception_context:
+            multi_callable.with_call(request_iterator, metadata=metadata)
+        self.assertIn(expected_error_details, str(exception_context.exception))
+
+    def testStreamRequestFutureUnaryResponse(self):
+        request_iterator = (b'\x07\x08'
+                            for _ in range(test_constants.STREAM_LENGTH))
+        metadata = (('InVaLiD', 'StreamRequestFutureUnaryResponse'),)
+        expected_error_details = "metadata was invalid: %s" % metadata
+        response_future = self._stream_unary.future(
+            request_iterator, metadata=metadata)
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            response_future.result()
+        self.assertEqual(exception_context.exception.details(),
+                         expected_error_details)
+        self.assertEqual(exception_context.exception.code(),
+                         grpc.StatusCode.INTERNAL)
+        self.assertEqual(response_future.details(), expected_error_details)
+        self.assertEqual(response_future.code(), grpc.StatusCode.INTERNAL)
+
+    def testStreamRequestStreamResponse(self):
+        request_iterator = (b'\x07\x08'
+                            for _ in range(test_constants.STREAM_LENGTH))
+        metadata = (('InVaLiD', 'StreamRequestStreamResponse'),)
+        expected_error_details = "metadata was invalid: %s" % metadata
+        response_iterator = self._stream_stream(
+            request_iterator, metadata=metadata)
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            next(response_iterator)
+        self.assertEqual(exception_context.exception.details(),
+                         expected_error_details)
+        self.assertEqual(exception_context.exception.code(),
+                         grpc.StatusCode.INTERNAL)
+        self.assertEqual(response_iterator.details(), expected_error_details)
+        self.assertEqual(response_iterator.code(), grpc.StatusCode.INTERNAL)
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_invocation_defects_test.py b/src/python/grpcio_tests/tests/unit/_invocation_defects_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..efeb237874f8297cb9e2eff8802e267365705bd0
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/_invocation_defects_test.py
@@ -0,0 +1,259 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import itertools
+import threading
+import unittest
+from concurrent import futures
+
+import grpc
+from grpc.framework.foundation import logging_pool
+
+from tests.unit.framework.common import test_constants
+from tests.unit.framework.common import test_control
+
+_SERIALIZE_REQUEST = lambda bytestring: bytestring * 2
+_DESERIALIZE_REQUEST = lambda bytestring: bytestring[len(bytestring) // 2:]
+_SERIALIZE_RESPONSE = lambda bytestring: bytestring * 3
+_DESERIALIZE_RESPONSE = lambda bytestring: bytestring[:len(bytestring) // 3]
+
+_UNARY_UNARY = '/test/UnaryUnary'
+_UNARY_STREAM = '/test/UnaryStream'
+_STREAM_UNARY = '/test/StreamUnary'
+_STREAM_STREAM = '/test/StreamStream'
+
+
+class _Callback(object):
+
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._value = None
+        self._called = False
+
+    def __call__(self, value):
+        with self._condition:
+            self._value = value
+            self._called = True
+            self._condition.notify_all()
+
+    def value(self):
+        with self._condition:
+            while not self._called:
+                self._condition.wait()
+            return self._value
+
+
+class _Handler(object):
+
+    def __init__(self, control):
+        self._control = control
+
+    def handle_unary_unary(self, request, servicer_context):
+        self._control.control()
+        if servicer_context is not None:
+            servicer_context.set_trailing_metadata(((
+                'testkey',
+                'testvalue',),))
+        return request
+
+    def handle_unary_stream(self, request, servicer_context):
+        for _ in range(test_constants.STREAM_LENGTH):
+            self._control.control()
+            yield request
+        self._control.control()
+        if servicer_context is not None:
+            servicer_context.set_trailing_metadata(((
+                'testkey',
+                'testvalue',),))
+
+    def handle_stream_unary(self, request_iterator, servicer_context):
+        if servicer_context is not None:
+            servicer_context.invocation_metadata()
+        self._control.control()
+        response_elements = []
+        for request in request_iterator:
+            self._control.control()
+            response_elements.append(request)
+        self._control.control()
+        if servicer_context is not None:
+            servicer_context.set_trailing_metadata(((
+                'testkey',
+                'testvalue',),))
+        return b''.join(response_elements)
+
+    def handle_stream_stream(self, request_iterator, servicer_context):
+        self._control.control()
+        if servicer_context is not None:
+            servicer_context.set_trailing_metadata(((
+                'testkey',
+                'testvalue',),))
+        for request in request_iterator:
+            self._control.control()
+            yield request
+        self._control.control()
+
+
+class _MethodHandler(grpc.RpcMethodHandler):
+
+    def __init__(self, request_streaming, response_streaming,
+                 request_deserializer, response_serializer, unary_unary,
+                 unary_stream, stream_unary, stream_stream):
+        self.request_streaming = request_streaming
+        self.response_streaming = response_streaming
+        self.request_deserializer = request_deserializer
+        self.response_serializer = response_serializer
+        self.unary_unary = unary_unary
+        self.unary_stream = unary_stream
+        self.stream_unary = stream_unary
+        self.stream_stream = stream_stream
+
+
+class _GenericHandler(grpc.GenericRpcHandler):
+
+    def __init__(self, handler):
+        self._handler = handler
+
+    def service(self, handler_call_details):
+        if handler_call_details.method == _UNARY_UNARY:
+            return _MethodHandler(False, False, None, None,
+                                  self._handler.handle_unary_unary, None, None,
+                                  None)
+        elif handler_call_details.method == _UNARY_STREAM:
+            return _MethodHandler(False, True, _DESERIALIZE_REQUEST,
+                                  _SERIALIZE_RESPONSE, None,
+                                  self._handler.handle_unary_stream, None, None)
+        elif handler_call_details.method == _STREAM_UNARY:
+            return _MethodHandler(True, False, _DESERIALIZE_REQUEST,
+                                  _SERIALIZE_RESPONSE, None, None,
+                                  self._handler.handle_stream_unary, None)
+        elif handler_call_details.method == _STREAM_STREAM:
+            return _MethodHandler(True, True, None, None, None, None, None,
+                                  self._handler.handle_stream_stream)
+        else:
+            return None
+
+
+class FailAfterFewIterationsCounter(object):
+
+    def __init__(self, high, bytestring):
+        self._current = 0
+        self._high = high
+        self._bytestring = bytestring
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self._current >= self._high:
+            raise Exception("This is a deliberate failure in a unit test.")
+        else:
+            self._current += 1
+            return self._bytestring
+
+
+def _unary_unary_multi_callable(channel):
+    return channel.unary_unary(_UNARY_UNARY)
+
+
+def _unary_stream_multi_callable(channel):
+    return channel.unary_stream(
+        _UNARY_STREAM,
+        request_serializer=_SERIALIZE_REQUEST,
+        response_deserializer=_DESERIALIZE_RESPONSE)
+
+
+def _stream_unary_multi_callable(channel):
+    return channel.stream_unary(
+        _STREAM_UNARY,
+        request_serializer=_SERIALIZE_REQUEST,
+        response_deserializer=_DESERIALIZE_RESPONSE)
+
+
+def _stream_stream_multi_callable(channel):
+    return channel.stream_stream(_STREAM_STREAM)
+
+
+class InvocationDefectsTest(unittest.TestCase):
+
+    def setUp(self):
+        self._control = test_control.PauseFailControl()
+        self._handler = _Handler(self._control)
+        self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+
+        self._server = grpc.server(self._server_pool)
+        port = self._server.add_insecure_port('[::]:0')
+        self._server.add_generic_rpc_handlers((_GenericHandler(self._handler),))
+        self._server.start()
+
+        self._channel = grpc.insecure_channel('localhost:%d' % port)
+
+    def tearDown(self):
+        self._server.stop(0)
+
+    def testIterableStreamRequestBlockingUnaryResponse(self):
+        requests = [b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH)]
+        multi_callable = _stream_unary_multi_callable(self._channel)
+
+        with self.assertRaises(grpc.RpcError):
+            response = multi_callable(
+                requests,
+                metadata=(
+                    ('test', 'IterableStreamRequestBlockingUnaryResponse'),))
+
+    def testIterableStreamRequestFutureUnaryResponse(self):
+        requests = [b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH)]
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        response_future = multi_callable.future(
+            requests,
+            metadata=(('test', 'IterableStreamRequestFutureUnaryResponse'),))
+
+        with self.assertRaises(grpc.RpcError):
+            response = response_future.result()
+
+    def testIterableStreamRequestStreamResponse(self):
+        requests = [b'\x77\x58' for _ in range(test_constants.STREAM_LENGTH)]
+        multi_callable = _stream_stream_multi_callable(self._channel)
+        response_iterator = multi_callable(
+            requests,
+            metadata=(('test', 'IterableStreamRequestStreamResponse'),))
+
+        with self.assertRaises(grpc.RpcError):
+            next(response_iterator)
+
+    def testIteratorStreamRequestStreamResponse(self):
+        requests_iterator = FailAfterFewIterationsCounter(
+            test_constants.STREAM_LENGTH // 2, b'\x07\x08')
+        multi_callable = _stream_stream_multi_callable(self._channel)
+        response_iterator = multi_callable(
+            requests_iterator,
+            metadata=(('test', 'IteratorStreamRequestStreamResponse'),))
+
+        with self.assertRaises(grpc.RpcError):
+            for _ in range(test_constants.STREAM_LENGTH // 2 + 1):
+                next(response_iterator)
diff --git a/src/python/grpcio_tests/tests/unit/_junkdrawer/__init__.py b/src/python/grpcio_tests/tests/unit/_junkdrawer/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/unit/_junkdrawer/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/_junkdrawer/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/unit/_junkdrawer/stock_pb2.py b/src/python/grpcio_tests/tests/unit/_junkdrawer/stock_pb2.py
index eef18f82d658a471d41b03eb604787b95ec5d416..70f437bc83c0387f27f0893ea0324a16f82f1faa 100644
--- a/src/python/grpcio_tests/tests/unit/_junkdrawer/stock_pb2.py
+++ b/src/python/grpcio_tests/tests/unit/_junkdrawer/stock_pb2.py
@@ -35,7 +35,7 @@
 # source: stock.proto
 
 import sys
-_b=sys.version_info[0]<3 and (lambda x:x) or (lambda x:x.encode('latin1'))
+_b = sys.version_info[0] < 3 and (lambda x: x) or (lambda x: x.encode('latin1'))
 from google.protobuf import descriptor as _descriptor
 from google.protobuf import message as _message
 from google.protobuf import reflection as _reflection
@@ -45,108 +45,135 @@ from google.protobuf import descriptor_pb2
 
 _sym_db = _symbol_database.Default()
 
-
-
-
 DESCRIPTOR = _descriptor.FileDescriptor(
-  name='stock.proto',
-  package='stock',
-  serialized_pb=_b('\n\x0bstock.proto\x12\x05stock\">\n\x0cStockRequest\x12\x0e\n\x06symbol\x18\x01 \x01(\t\x12\x1e\n\x13num_trades_to_watch\x18\x02 \x01(\x05:\x01\x30\"+\n\nStockReply\x12\r\n\x05price\x18\x01 \x01(\x02\x12\x0e\n\x06symbol\x18\x02 \x01(\t2\x96\x02\n\x05Stock\x12=\n\x11GetLastTradePrice\x12\x13.stock.StockRequest\x1a\x11.stock.StockReply\"\x00\x12I\n\x19GetLastTradePriceMultiple\x12\x13.stock.StockRequest\x1a\x11.stock.StockReply\"\x00(\x01\x30\x01\x12?\n\x11WatchFutureTrades\x12\x13.stock.StockRequest\x1a\x11.stock.StockReply\"\x00\x30\x01\x12\x42\n\x14GetHighestTradePrice\x12\x13.stock.StockRequest\x1a\x11.stock.StockReply\"\x00(\x01')
-)
+    name='stock.proto',
+    package='stock',
+    serialized_pb=_b(
+        '\n\x0bstock.proto\x12\x05stock\">\n\x0cStockRequest\x12\x0e\n\x06symbol\x18\x01 \x01(\t\x12\x1e\n\x13num_trades_to_watch\x18\x02 \x01(\x05:\x01\x30\"+\n\nStockReply\x12\r\n\x05price\x18\x01 \x01(\x02\x12\x0e\n\x06symbol\x18\x02 \x01(\t2\x96\x02\n\x05Stock\x12=\n\x11GetLastTradePrice\x12\x13.stock.StockRequest\x1a\x11.stock.StockReply\"\x00\x12I\n\x19GetLastTradePriceMultiple\x12\x13.stock.StockRequest\x1a\x11.stock.StockReply\"\x00(\x01\x30\x01\x12?\n\x11WatchFutureTrades\x12\x13.stock.StockRequest\x1a\x11.stock.StockReply\"\x00\x30\x01\x12\x42\n\x14GetHighestTradePrice\x12\x13.stock.StockRequest\x1a\x11.stock.StockReply\"\x00(\x01'
+    ))
 _sym_db.RegisterFileDescriptor(DESCRIPTOR)
 
-
-
-
 _STOCKREQUEST = _descriptor.Descriptor(
-  name='StockRequest',
-  full_name='stock.StockRequest',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='symbol', full_name='stock.StockRequest.symbol', index=0,
-      number=1, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=_b("").decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      options=None),
-    _descriptor.FieldDescriptor(
-      name='num_trades_to_watch', full_name='stock.StockRequest.num_trades_to_watch', index=1,
-      number=2, type=5, cpp_type=1, label=1,
-      has_default_value=True, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      options=None),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  options=None,
-  is_extendable=False,
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=22,
-  serialized_end=84,
-)
-
+    name='StockRequest',
+    full_name='stock.StockRequest',
+    filename=None,
+    file=DESCRIPTOR,
+    containing_type=None,
+    fields=[
+        _descriptor.FieldDescriptor(
+            name='symbol',
+            full_name='stock.StockRequest.symbol',
+            index=0,
+            number=1,
+            type=9,
+            cpp_type=9,
+            label=1,
+            has_default_value=False,
+            default_value=_b("").decode('utf-8'),
+            message_type=None,
+            enum_type=None,
+            containing_type=None,
+            is_extension=False,
+            extension_scope=None,
+            options=None),
+        _descriptor.FieldDescriptor(
+            name='num_trades_to_watch',
+            full_name='stock.StockRequest.num_trades_to_watch',
+            index=1,
+            number=2,
+            type=5,
+            cpp_type=1,
+            label=1,
+            has_default_value=True,
+            default_value=0,
+            message_type=None,
+            enum_type=None,
+            containing_type=None,
+            is_extension=False,
+            extension_scope=None,
+            options=None),
+    ],
+    extensions=[],
+    nested_types=[],
+    enum_types=[],
+    options=None,
+    is_extendable=False,
+    extension_ranges=[],
+    oneofs=[],
+    serialized_start=22,
+    serialized_end=84,)
 
 _STOCKREPLY = _descriptor.Descriptor(
-  name='StockReply',
-  full_name='stock.StockReply',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='price', full_name='stock.StockReply.price', index=0,
-      number=1, type=2, cpp_type=6, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      options=None),
-    _descriptor.FieldDescriptor(
-      name='symbol', full_name='stock.StockReply.symbol', index=1,
-      number=2, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=_b("").decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      options=None),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  options=None,
-  is_extendable=False,
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=86,
-  serialized_end=129,
-)
+    name='StockReply',
+    full_name='stock.StockReply',
+    filename=None,
+    file=DESCRIPTOR,
+    containing_type=None,
+    fields=[
+        _descriptor.FieldDescriptor(
+            name='price',
+            full_name='stock.StockReply.price',
+            index=0,
+            number=1,
+            type=2,
+            cpp_type=6,
+            label=1,
+            has_default_value=False,
+            default_value=0,
+            message_type=None,
+            enum_type=None,
+            containing_type=None,
+            is_extension=False,
+            extension_scope=None,
+            options=None),
+        _descriptor.FieldDescriptor(
+            name='symbol',
+            full_name='stock.StockReply.symbol',
+            index=1,
+            number=2,
+            type=9,
+            cpp_type=9,
+            label=1,
+            has_default_value=False,
+            default_value=_b("").decode('utf-8'),
+            message_type=None,
+            enum_type=None,
+            containing_type=None,
+            is_extension=False,
+            extension_scope=None,
+            options=None),
+    ],
+    extensions=[],
+    nested_types=[],
+    enum_types=[],
+    options=None,
+    is_extendable=False,
+    extension_ranges=[],
+    oneofs=[],
+    serialized_start=86,
+    serialized_end=129,)
 
 DESCRIPTOR.message_types_by_name['StockRequest'] = _STOCKREQUEST
 DESCRIPTOR.message_types_by_name['StockReply'] = _STOCKREPLY
 
-StockRequest = _reflection.GeneratedProtocolMessageType('StockRequest', (_message.Message,), dict(
-  DESCRIPTOR = _STOCKREQUEST,
-  __module__ = 'stock_pb2'
-  # @@protoc_insertion_point(class_scope:stock.StockRequest)
-  ))
+StockRequest = _reflection.GeneratedProtocolMessageType(
+    'StockRequest',
+    (_message.Message,),
+    dict(
+        DESCRIPTOR=_STOCKREQUEST,
+        __module__='stock_pb2'
+        # @@protoc_insertion_point(class_scope:stock.StockRequest)
+    ))
 _sym_db.RegisterMessage(StockRequest)
 
-StockReply = _reflection.GeneratedProtocolMessageType('StockReply', (_message.Message,), dict(
-  DESCRIPTOR = _STOCKREPLY,
-  __module__ = 'stock_pb2'
-  # @@protoc_insertion_point(class_scope:stock.StockReply)
-  ))
+StockReply = _reflection.GeneratedProtocolMessageType(
+    'StockReply',
+    (_message.Message,),
+    dict(
+        DESCRIPTOR=_STOCKREPLY,
+        __module__='stock_pb2'
+        # @@protoc_insertion_point(class_scope:stock.StockReply)
+    ))
 _sym_db.RegisterMessage(StockReply)
 
-
 # @@protoc_insertion_point(module_scope)
diff --git a/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py b/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py
index fb3e5477815777f0968be96553b7901e1129c106..af2ce64dcead55ec697a5586fcf3e021dd09c3a2 100644
--- a/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py
+++ b/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests application-provided metadata, status code, and details."""
 
 import threading
@@ -53,20 +52,16 @@ _UNARY_STREAM = 'UnaryStream'
 _STREAM_UNARY = 'StreamUnary'
 _STREAM_STREAM = 'StreamStream'
 
-_CLIENT_METADATA = (
-    ('client-md-key', 'client-md-key'),
-    ('client-md-key-bin', b'\x00\x01')
-)
+_CLIENT_METADATA = (('client-md-key', 'client-md-key'),
+                    ('client-md-key-bin', b'\x00\x01'))
 
 _SERVER_INITIAL_METADATA = (
     ('server-initial-md-key', 'server-initial-md-value'),
-    ('server-initial-md-key-bin', b'\x00\x02')
-)
+    ('server-initial-md-key-bin', b'\x00\x02'))
 
 _SERVER_TRAILING_METADATA = (
     ('server-trailing-md-key', 'server-trailing-md-value'),
-    ('server-trailing-md-key-bin', b'\x00\x03')
-)
+    ('server-trailing-md-key-bin', b'\x00\x03'))
 
 _NON_OK_CODE = grpc.StatusCode.NOT_FOUND
 _DETAILS = 'Test details!'
@@ -74,450 +69,464 @@ _DETAILS = 'Test details!'
 
 class _Servicer(object):
 
-  def __init__(self):
-    self._lock = threading.Lock()
-    self._code = None
-    self._details = None
-    self._exception = False
-    self._return_none = False
-    self._received_client_metadata = None
-
-  def unary_unary(self, request, context):
-    with self._lock:
-      self._received_client_metadata = context.invocation_metadata()
-      context.send_initial_metadata(_SERVER_INITIAL_METADATA)
-      context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
-      if self._code is not None:
-        context.set_code(self._code)
-      if self._details is not None:
-        context.set_details(self._details)
-      if self._exception:
-        raise test_control.Defect()
-      else:
-        return None if self._return_none else object()
-
-  def unary_stream(self, request, context):
-    with self._lock:
-      self._received_client_metadata = context.invocation_metadata()
-      context.send_initial_metadata(_SERVER_INITIAL_METADATA)
-      context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
-      if self._code is not None:
-        context.set_code(self._code)
-      if self._details is not None:
-        context.set_details(self._details)
-      for _ in range(test_constants.STREAM_LENGTH // 2):
-        yield _SERIALIZED_RESPONSE
-      if self._exception:
-        raise test_control.Defect()
-
-  def stream_unary(self, request_iterator, context):
-    with self._lock:
-      self._received_client_metadata = context.invocation_metadata()
-      context.send_initial_metadata(_SERVER_INITIAL_METADATA)
-      context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
-      if self._code is not None:
-        context.set_code(self._code)
-      if self._details is not None:
-        context.set_details(self._details)
-      # TODO(https://github.com/grpc/grpc/issues/6891): just ignore the
-      # request iterator.
-      for ignored_request in request_iterator:
-        pass
-      if self._exception:
-        raise test_control.Defect()
-      else:
-        return None if self._return_none else _SERIALIZED_RESPONSE
-
-  def stream_stream(self, request_iterator, context):
-    with self._lock:
-      self._received_client_metadata = context.invocation_metadata()
-      context.send_initial_metadata(_SERVER_INITIAL_METADATA)
-      context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
-      if self._code is not None:
-        context.set_code(self._code)
-      if self._details is not None:
-        context.set_details(self._details)
-      # TODO(https://github.com/grpc/grpc/issues/6891): just ignore the
-      # request iterator.
-      for ignored_request in request_iterator:
-        pass
-      for _ in range(test_constants.STREAM_LENGTH // 3):
-        yield object()
-      if self._exception:
-        raise test_control.Defect()
-
-  def set_code(self, code):
-    with self._lock:
-      self._code = code
-
-  def set_details(self, details):
-    with self._lock:
-      self._details = details
-
-  def set_exception(self):
-    with self._lock:
-      self._exception = True
-
-  def set_return_none(self):
-    with self._lock:
-      self._return_none = True
-
-  def received_client_metadata(self):
-    with self._lock:
-      return self._received_client_metadata
+    def __init__(self):
+        self._lock = threading.Lock()
+        self._code = None
+        self._details = None
+        self._exception = False
+        self._return_none = False
+        self._received_client_metadata = None
+
+    def unary_unary(self, request, context):
+        with self._lock:
+            self._received_client_metadata = context.invocation_metadata()
+            context.send_initial_metadata(_SERVER_INITIAL_METADATA)
+            context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
+            if self._code is not None:
+                context.set_code(self._code)
+            if self._details is not None:
+                context.set_details(self._details)
+            if self._exception:
+                raise test_control.Defect()
+            else:
+                return None if self._return_none else object()
+
+    def unary_stream(self, request, context):
+        with self._lock:
+            self._received_client_metadata = context.invocation_metadata()
+            context.send_initial_metadata(_SERVER_INITIAL_METADATA)
+            context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
+            if self._code is not None:
+                context.set_code(self._code)
+            if self._details is not None:
+                context.set_details(self._details)
+            for _ in range(test_constants.STREAM_LENGTH // 2):
+                yield _SERIALIZED_RESPONSE
+            if self._exception:
+                raise test_control.Defect()
+
+    def stream_unary(self, request_iterator, context):
+        with self._lock:
+            self._received_client_metadata = context.invocation_metadata()
+            context.send_initial_metadata(_SERVER_INITIAL_METADATA)
+            context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
+            if self._code is not None:
+                context.set_code(self._code)
+            if self._details is not None:
+                context.set_details(self._details)
+            # TODO(https://github.com/grpc/grpc/issues/6891): just ignore the
+            # request iterator.
+            for ignored_request in request_iterator:
+                pass
+            if self._exception:
+                raise test_control.Defect()
+            else:
+                return None if self._return_none else _SERIALIZED_RESPONSE
+
+    def stream_stream(self, request_iterator, context):
+        with self._lock:
+            self._received_client_metadata = context.invocation_metadata()
+            context.send_initial_metadata(_SERVER_INITIAL_METADATA)
+            context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
+            if self._code is not None:
+                context.set_code(self._code)
+            if self._details is not None:
+                context.set_details(self._details)
+            # TODO(https://github.com/grpc/grpc/issues/6891): just ignore the
+            # request iterator.
+            for ignored_request in request_iterator:
+                pass
+            for _ in range(test_constants.STREAM_LENGTH // 3):
+                yield object()
+            if self._exception:
+                raise test_control.Defect()
+
+    def set_code(self, code):
+        with self._lock:
+            self._code = code
+
+    def set_details(self, details):
+        with self._lock:
+            self._details = details
+
+    def set_exception(self):
+        with self._lock:
+            self._exception = True
+
+    def set_return_none(self):
+        with self._lock:
+            self._return_none = True
+
+    def received_client_metadata(self):
+        with self._lock:
+            return self._received_client_metadata
 
 
 def _generic_handler(servicer):
-  method_handlers = {
-      _UNARY_UNARY: grpc.unary_unary_rpc_method_handler(
-          servicer.unary_unary, request_deserializer=_REQUEST_DESERIALIZER,
-          response_serializer=_RESPONSE_SERIALIZER),
-      _UNARY_STREAM: grpc.unary_stream_rpc_method_handler(
-          servicer.unary_stream),
-      _STREAM_UNARY: grpc.stream_unary_rpc_method_handler(
-          servicer.stream_unary),
-      _STREAM_STREAM: grpc.stream_stream_rpc_method_handler(
-          servicer.stream_stream, request_deserializer=_REQUEST_DESERIALIZER,
-          response_serializer=_RESPONSE_SERIALIZER),
-  }
-  return grpc.method_handlers_generic_handler(_SERVICE, method_handlers)
+    method_handlers = {
+        _UNARY_UNARY: grpc.unary_unary_rpc_method_handler(
+            servicer.unary_unary,
+            request_deserializer=_REQUEST_DESERIALIZER,
+            response_serializer=_RESPONSE_SERIALIZER),
+        _UNARY_STREAM:
+        grpc.unary_stream_rpc_method_handler(servicer.unary_stream),
+        _STREAM_UNARY:
+        grpc.stream_unary_rpc_method_handler(servicer.stream_unary),
+        _STREAM_STREAM: grpc.stream_stream_rpc_method_handler(
+            servicer.stream_stream,
+            request_deserializer=_REQUEST_DESERIALIZER,
+            response_serializer=_RESPONSE_SERIALIZER),
+    }
+    return grpc.method_handlers_generic_handler(_SERVICE, method_handlers)
 
 
 class MetadataCodeDetailsTest(unittest.TestCase):
 
-  def setUp(self):
-    self._servicer = _Servicer()
-    self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    self._server = grpc.server(
-        self._server_pool, handlers=(_generic_handler(self._servicer),))
-    port = self._server.add_insecure_port('[::]:0')
-    self._server.start()
-
-    channel = grpc.insecure_channel('localhost:{}'.format(port))
-    self._unary_unary = channel.unary_unary(
-        '/'.join(('', _SERVICE, _UNARY_UNARY,)),
-        request_serializer=_REQUEST_SERIALIZER,
-        response_deserializer=_RESPONSE_DESERIALIZER,)
-    self._unary_stream = channel.unary_stream(
-        '/'.join(('', _SERVICE, _UNARY_STREAM,)),)
-    self._stream_unary = channel.stream_unary(
-        '/'.join(('', _SERVICE, _STREAM_UNARY,)),)
-    self._stream_stream = channel.stream_stream(
-        '/'.join(('', _SERVICE, _STREAM_STREAM,)),
-        request_serializer=_REQUEST_SERIALIZER,
-        response_deserializer=_RESPONSE_DESERIALIZER,)
-
-
-  def testSuccessfulUnaryUnary(self):
-    self._servicer.set_details(_DETAILS)
-
-    unused_response, call = self._unary_unary.with_call(
-        object(), metadata=_CLIENT_METADATA)
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA, call.initial_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-    self.assertIs(grpc.StatusCode.OK, call.code())
-    self.assertEqual(_DETAILS, call.details())
-
-  def testSuccessfulUnaryStream(self):
-    self._servicer.set_details(_DETAILS)
-
-    call = self._unary_stream(_SERIALIZED_REQUEST, metadata=_CLIENT_METADATA)
-    received_initial_metadata = call.initial_metadata()
-    for _ in call:
-      pass
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA, received_initial_metadata))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-    self.assertIs(grpc.StatusCode.OK, call.code())
-    self.assertEqual(_DETAILS, call.details())
-
-  def testSuccessfulStreamUnary(self):
-    self._servicer.set_details(_DETAILS)
-
-    unused_response, call = self._stream_unary.with_call(
-        iter([_SERIALIZED_REQUEST] * test_constants.STREAM_LENGTH),
-        metadata=_CLIENT_METADATA)
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA, call.initial_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-    self.assertIs(grpc.StatusCode.OK, call.code())
-    self.assertEqual(_DETAILS, call.details())
-
-  def testSuccessfulStreamStream(self):
-    self._servicer.set_details(_DETAILS)
-
-    call = self._stream_stream(
-        iter([object()] * test_constants.STREAM_LENGTH),
-        metadata=_CLIENT_METADATA)
-    received_initial_metadata = call.initial_metadata()
-    for _ in call:
-      pass
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA, received_initial_metadata))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-    self.assertIs(grpc.StatusCode.OK, call.code())
-    self.assertEqual(_DETAILS, call.details())
-
-  def testCustomCodeUnaryUnary(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      self._unary_unary.with_call(object(), metadata=_CLIENT_METADATA)
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA,
-            exception_context.exception.initial_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA,
-            exception_context.exception.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, exception_context.exception.code())
-    self.assertEqual(_DETAILS, exception_context.exception.details())
-
-  def testCustomCodeUnaryStream(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-
-    call = self._unary_stream(_SERIALIZED_REQUEST, metadata=_CLIENT_METADATA)
-    received_initial_metadata = call.initial_metadata()
-    with self.assertRaises(grpc.RpcError):
-      for _ in call:
-        pass
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA, received_initial_metadata))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, call.code())
-    self.assertEqual(_DETAILS, call.details())
-
-  def testCustomCodeStreamUnary(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      self._stream_unary.with_call(
-          iter([_SERIALIZED_REQUEST] * test_constants.STREAM_LENGTH),
-          metadata=_CLIENT_METADATA)
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-          _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-          _SERVER_INITIAL_METADATA,
-          exception_context.exception.initial_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-          _SERVER_TRAILING_METADATA,
-          exception_context.exception.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, exception_context.exception.code())
-    self.assertEqual(_DETAILS, exception_context.exception.details())
-
-  def testCustomCodeStreamStream(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-
-    call = self._stream_stream(
-        iter([object()] * test_constants.STREAM_LENGTH),
-        metadata=_CLIENT_METADATA)
-    received_initial_metadata = call.initial_metadata()
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      for _ in call:
-        pass
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-          _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA, received_initial_metadata))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA,
-            exception_context.exception.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, exception_context.exception.code())
-    self.assertEqual(_DETAILS, exception_context.exception.details())
-
-  def testCustomCodeExceptionUnaryUnary(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-    self._servicer.set_exception()
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-     self._unary_unary.with_call(object(), metadata=_CLIENT_METADATA)
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA,
-            exception_context.exception.initial_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA,
-            exception_context.exception.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, exception_context.exception.code())
-    self.assertEqual(_DETAILS, exception_context.exception.details())
-
-  def testCustomCodeExceptionUnaryStream(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-    self._servicer.set_exception()
-
-    call = self._unary_stream(_SERIALIZED_REQUEST, metadata=_CLIENT_METADATA)
-    received_initial_metadata = call.initial_metadata()
-    with self.assertRaises(grpc.RpcError):
-      for _ in call:
-        pass
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA, received_initial_metadata))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, call.code())
-    self.assertEqual(_DETAILS, call.details())
-
-  def testCustomCodeExceptionStreamUnary(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-    self._servicer.set_exception()
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      self._stream_unary.with_call(
-          iter([_SERIALIZED_REQUEST] * test_constants.STREAM_LENGTH),
-          metadata=_CLIENT_METADATA)
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA,
-            exception_context.exception.initial_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA,
-            exception_context.exception.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, exception_context.exception.code())
-    self.assertEqual(_DETAILS, exception_context.exception.details())
-
-  def testCustomCodeExceptionStreamStream(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-    self._servicer.set_exception()
-
-    call = self._stream_stream(
-        iter([object()] * test_constants.STREAM_LENGTH),
-        metadata=_CLIENT_METADATA)
-    received_initial_metadata = call.initial_metadata()
-    with self.assertRaises(grpc.RpcError):
-      for _ in call:
-        pass
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA, received_initial_metadata))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, call.code())
-    self.assertEqual(_DETAILS, call.details())
-
-  def testCustomCodeReturnNoneUnaryUnary(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-    self._servicer.set_return_none()
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      self._unary_unary.with_call(object(), metadata=_CLIENT_METADATA)
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA,
-            exception_context.exception.initial_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA,
-            exception_context.exception.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, exception_context.exception.code())
-    self.assertEqual(_DETAILS, exception_context.exception.details())
-
-  def testCustomCodeReturnNoneStreamUnary(self):
-    self._servicer.set_code(_NON_OK_CODE)
-    self._servicer.set_details(_DETAILS)
-    self._servicer.set_return_none()
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      self._stream_unary.with_call(
-          iter([_SERIALIZED_REQUEST] * test_constants.STREAM_LENGTH),
-          metadata=_CLIENT_METADATA)
-
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _CLIENT_METADATA, self._servicer.received_client_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_INITIAL_METADATA,
-            exception_context.exception.initial_metadata()))
-    self.assertTrue(
-        test_common.metadata_transmitted(
-            _SERVER_TRAILING_METADATA,
-            exception_context.exception.trailing_metadata()))
-    self.assertIs(_NON_OK_CODE, exception_context.exception.code())
-    self.assertEqual(_DETAILS, exception_context.exception.details())
+    def setUp(self):
+        self._servicer = _Servicer()
+        self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        self._server = grpc.server(
+            self._server_pool, handlers=(_generic_handler(self._servicer),))
+        port = self._server.add_insecure_port('[::]:0')
+        self._server.start()
+
+        channel = grpc.insecure_channel('localhost:{}'.format(port))
+        self._unary_unary = channel.unary_unary(
+            '/'.join((
+                '',
+                _SERVICE,
+                _UNARY_UNARY,)),
+            request_serializer=_REQUEST_SERIALIZER,
+            response_deserializer=_RESPONSE_DESERIALIZER,)
+        self._unary_stream = channel.unary_stream('/'.join((
+            '',
+            _SERVICE,
+            _UNARY_STREAM,)),)
+        self._stream_unary = channel.stream_unary('/'.join((
+            '',
+            _SERVICE,
+            _STREAM_UNARY,)),)
+        self._stream_stream = channel.stream_stream(
+            '/'.join((
+                '',
+                _SERVICE,
+                _STREAM_STREAM,)),
+            request_serializer=_REQUEST_SERIALIZER,
+            response_deserializer=_RESPONSE_DESERIALIZER,)
+
+    def testSuccessfulUnaryUnary(self):
+        self._servicer.set_details(_DETAILS)
+
+        unused_response, call = self._unary_unary.with_call(
+            object(), metadata=_CLIENT_METADATA)
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             call.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+        self.assertIs(grpc.StatusCode.OK, call.code())
+        self.assertEqual(_DETAILS, call.details())
+
+    def testSuccessfulUnaryStream(self):
+        self._servicer.set_details(_DETAILS)
+
+        call = self._unary_stream(
+            _SERIALIZED_REQUEST, metadata=_CLIENT_METADATA)
+        received_initial_metadata = call.initial_metadata()
+        for _ in call:
+            pass
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             received_initial_metadata))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+        self.assertIs(grpc.StatusCode.OK, call.code())
+        self.assertEqual(_DETAILS, call.details())
+
+    def testSuccessfulStreamUnary(self):
+        self._servicer.set_details(_DETAILS)
+
+        unused_response, call = self._stream_unary.with_call(
+            iter([_SERIALIZED_REQUEST] * test_constants.STREAM_LENGTH),
+            metadata=_CLIENT_METADATA)
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             call.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+        self.assertIs(grpc.StatusCode.OK, call.code())
+        self.assertEqual(_DETAILS, call.details())
+
+    def testSuccessfulStreamStream(self):
+        self._servicer.set_details(_DETAILS)
+
+        call = self._stream_stream(
+            iter([object()] * test_constants.STREAM_LENGTH),
+            metadata=_CLIENT_METADATA)
+        received_initial_metadata = call.initial_metadata()
+        for _ in call:
+            pass
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             received_initial_metadata))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+        self.assertIs(grpc.StatusCode.OK, call.code())
+        self.assertEqual(_DETAILS, call.details())
+
+    def testCustomCodeUnaryUnary(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            self._unary_unary.with_call(object(), metadata=_CLIENT_METADATA)
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_INITIAL_METADATA,
+                exception_context.exception.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_TRAILING_METADATA,
+                exception_context.exception.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, exception_context.exception.code())
+        self.assertEqual(_DETAILS, exception_context.exception.details())
+
+    def testCustomCodeUnaryStream(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+
+        call = self._unary_stream(
+            _SERIALIZED_REQUEST, metadata=_CLIENT_METADATA)
+        received_initial_metadata = call.initial_metadata()
+        with self.assertRaises(grpc.RpcError):
+            for _ in call:
+                pass
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             received_initial_metadata))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, call.code())
+        self.assertEqual(_DETAILS, call.details())
+
+    def testCustomCodeStreamUnary(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            self._stream_unary.with_call(
+                iter([_SERIALIZED_REQUEST] * test_constants.STREAM_LENGTH),
+                metadata=_CLIENT_METADATA)
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_INITIAL_METADATA,
+                exception_context.exception.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_TRAILING_METADATA,
+                exception_context.exception.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, exception_context.exception.code())
+        self.assertEqual(_DETAILS, exception_context.exception.details())
+
+    def testCustomCodeStreamStream(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+
+        call = self._stream_stream(
+            iter([object()] * test_constants.STREAM_LENGTH),
+            metadata=_CLIENT_METADATA)
+        received_initial_metadata = call.initial_metadata()
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            for _ in call:
+                pass
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             received_initial_metadata))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_TRAILING_METADATA,
+                exception_context.exception.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, exception_context.exception.code())
+        self.assertEqual(_DETAILS, exception_context.exception.details())
+
+    def testCustomCodeExceptionUnaryUnary(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+        self._servicer.set_exception()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            self._unary_unary.with_call(object(), metadata=_CLIENT_METADATA)
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_INITIAL_METADATA,
+                exception_context.exception.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_TRAILING_METADATA,
+                exception_context.exception.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, exception_context.exception.code())
+        self.assertEqual(_DETAILS, exception_context.exception.details())
+
+    def testCustomCodeExceptionUnaryStream(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+        self._servicer.set_exception()
+
+        call = self._unary_stream(
+            _SERIALIZED_REQUEST, metadata=_CLIENT_METADATA)
+        received_initial_metadata = call.initial_metadata()
+        with self.assertRaises(grpc.RpcError):
+            for _ in call:
+                pass
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             received_initial_metadata))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, call.code())
+        self.assertEqual(_DETAILS, call.details())
+
+    def testCustomCodeExceptionStreamUnary(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+        self._servicer.set_exception()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            self._stream_unary.with_call(
+                iter([_SERIALIZED_REQUEST] * test_constants.STREAM_LENGTH),
+                metadata=_CLIENT_METADATA)
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_INITIAL_METADATA,
+                exception_context.exception.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_TRAILING_METADATA,
+                exception_context.exception.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, exception_context.exception.code())
+        self.assertEqual(_DETAILS, exception_context.exception.details())
+
+    def testCustomCodeExceptionStreamStream(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+        self._servicer.set_exception()
+
+        call = self._stream_stream(
+            iter([object()] * test_constants.STREAM_LENGTH),
+            metadata=_CLIENT_METADATA)
+        received_initial_metadata = call.initial_metadata()
+        with self.assertRaises(grpc.RpcError):
+            for _ in call:
+                pass
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             received_initial_metadata))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, call.code())
+        self.assertEqual(_DETAILS, call.details())
+
+    def testCustomCodeReturnNoneUnaryUnary(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+        self._servicer.set_return_none()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            self._unary_unary.with_call(object(), metadata=_CLIENT_METADATA)
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_INITIAL_METADATA,
+                exception_context.exception.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_TRAILING_METADATA,
+                exception_context.exception.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, exception_context.exception.code())
+        self.assertEqual(_DETAILS, exception_context.exception.details())
+
+    def testCustomCodeReturnNoneStreamUnary(self):
+        self._servicer.set_code(_NON_OK_CODE)
+        self._servicer.set_details(_DETAILS)
+        self._servicer.set_return_none()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            self._stream_unary.with_call(
+                iter([_SERIALIZED_REQUEST] * test_constants.STREAM_LENGTH),
+                metadata=_CLIENT_METADATA)
+
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _CLIENT_METADATA, self._servicer.received_client_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_INITIAL_METADATA,
+                exception_context.exception.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(
+                _SERVER_TRAILING_METADATA,
+                exception_context.exception.trailing_metadata()))
+        self.assertIs(_NON_OK_CODE, exception_context.exception.code())
+        self.assertEqual(_DETAILS, exception_context.exception.details())
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_metadata_test.py b/src/python/grpcio_tests/tests/unit/_metadata_test.py
index da7347692998d8e0fa35b5a04db790e23cde8850..53fe7ba8aa57ddda6ab57b6338b5408e0f6c591f 100644
--- a/src/python/grpcio_tests/tests/unit/_metadata_test.py
+++ b/src/python/grpcio_tests/tests/unit/_metadata_test.py
@@ -51,166 +51,174 @@ _STREAM_STREAM = '/test/StreamStream'
 
 _USER_AGENT = 'Python-gRPC-{}'.format(_grpcio_metadata.__version__)
 
-_CLIENT_METADATA = (
-    ('client-md-key', 'client-md-key'),
-    ('client-md-key-bin', b'\x00\x01')
-)
+_CLIENT_METADATA = (('client-md-key', 'client-md-key'),
+                    ('client-md-key-bin', b'\x00\x01'))
 
 _SERVER_INITIAL_METADATA = (
     ('server-initial-md-key', 'server-initial-md-value'),
-    ('server-initial-md-key-bin', b'\x00\x02')
-)
+    ('server-initial-md-key-bin', b'\x00\x02'))
 
 _SERVER_TRAILING_METADATA = (
     ('server-trailing-md-key', 'server-trailing-md-value'),
-    ('server-trailing-md-key-bin', b'\x00\x03')
-)
+    ('server-trailing-md-key-bin', b'\x00\x03'))
 
 
 def user_agent(metadata):
-  for key, val in metadata:
-    if key == 'user-agent':
-      return val
-  raise KeyError('No user agent!')
+    for key, val in metadata:
+        if key == 'user-agent':
+            return val
+    raise KeyError('No user agent!')
 
 
 def validate_client_metadata(test, servicer_context):
-  test.assertTrue(test_common.metadata_transmitted(
-      _CLIENT_METADATA, servicer_context.invocation_metadata()))
-  test.assertTrue(user_agent(servicer_context.invocation_metadata())
-                  .startswith('primary-agent ' + _USER_AGENT))
-  test.assertTrue(user_agent(servicer_context.invocation_metadata())
-                  .endswith('secondary-agent'))
+    test.assertTrue(
+        test_common.metadata_transmitted(
+            _CLIENT_METADATA, servicer_context.invocation_metadata()))
+    test.assertTrue(
+        user_agent(servicer_context.invocation_metadata())
+        .startswith('primary-agent ' + _USER_AGENT))
+    test.assertTrue(
+        user_agent(servicer_context.invocation_metadata())
+        .endswith('secondary-agent'))
 
 
 def handle_unary_unary(test, request, servicer_context):
-  validate_client_metadata(test, servicer_context)
-  servicer_context.send_initial_metadata(_SERVER_INITIAL_METADATA)
-  servicer_context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
-  return _RESPONSE
+    validate_client_metadata(test, servicer_context)
+    servicer_context.send_initial_metadata(_SERVER_INITIAL_METADATA)
+    servicer_context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
+    return _RESPONSE
 
 
 def handle_unary_stream(test, request, servicer_context):
-  validate_client_metadata(test, servicer_context)
-  servicer_context.send_initial_metadata(_SERVER_INITIAL_METADATA)
-  servicer_context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
-  for _ in range(test_constants.STREAM_LENGTH):
-    yield _RESPONSE
+    validate_client_metadata(test, servicer_context)
+    servicer_context.send_initial_metadata(_SERVER_INITIAL_METADATA)
+    servicer_context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
+    for _ in range(test_constants.STREAM_LENGTH):
+        yield _RESPONSE
 
 
 def handle_stream_unary(test, request_iterator, servicer_context):
-  validate_client_metadata(test, servicer_context)
-  servicer_context.send_initial_metadata(_SERVER_INITIAL_METADATA)
-  servicer_context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
-  # TODO(issue:#6891) We should be able to remove this loop
-  for request in request_iterator:
-    pass
-  return _RESPONSE
+    validate_client_metadata(test, servicer_context)
+    servicer_context.send_initial_metadata(_SERVER_INITIAL_METADATA)
+    servicer_context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
+    # TODO(issue:#6891) We should be able to remove this loop
+    for request in request_iterator:
+        pass
+    return _RESPONSE
 
 
 def handle_stream_stream(test, request_iterator, servicer_context):
-  validate_client_metadata(test, servicer_context)
-  servicer_context.send_initial_metadata(_SERVER_INITIAL_METADATA)
-  servicer_context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
-  # TODO(issue:#6891) We should be able to remove this loop,
-  # and replace with return; yield
-  for request in request_iterator:
-    yield _RESPONSE
+    validate_client_metadata(test, servicer_context)
+    servicer_context.send_initial_metadata(_SERVER_INITIAL_METADATA)
+    servicer_context.set_trailing_metadata(_SERVER_TRAILING_METADATA)
+    # TODO(issue:#6891) We should be able to remove this loop,
+    # and replace with return; yield
+    for request in request_iterator:
+        yield _RESPONSE
 
 
 class _MethodHandler(grpc.RpcMethodHandler):
 
-  def __init__(self, test, request_streaming, response_streaming):
-    self.request_streaming = request_streaming
-    self.response_streaming = response_streaming
-    self.request_deserializer = None
-    self.response_serializer = None
-    self.unary_unary = None
-    self.unary_stream = None
-    self.stream_unary = None
-    self.stream_stream = None
-    if self.request_streaming and self.response_streaming:
-      self.stream_stream = lambda x, y: handle_stream_stream(test, x, y)
-    elif self.request_streaming:
-      self.stream_unary = lambda x, y: handle_stream_unary(test, x, y)
-    elif self.response_streaming:
-      self.unary_stream = lambda x, y: handle_unary_stream(test, x, y)
-    else:
-      self.unary_unary = lambda x, y: handle_unary_unary(test, x, y)
+    def __init__(self, test, request_streaming, response_streaming):
+        self.request_streaming = request_streaming
+        self.response_streaming = response_streaming
+        self.request_deserializer = None
+        self.response_serializer = None
+        self.unary_unary = None
+        self.unary_stream = None
+        self.stream_unary = None
+        self.stream_stream = None
+        if self.request_streaming and self.response_streaming:
+            self.stream_stream = lambda x, y: handle_stream_stream(test, x, y)
+        elif self.request_streaming:
+            self.stream_unary = lambda x, y: handle_stream_unary(test, x, y)
+        elif self.response_streaming:
+            self.unary_stream = lambda x, y: handle_unary_stream(test, x, y)
+        else:
+            self.unary_unary = lambda x, y: handle_unary_unary(test, x, y)
 
 
 class _GenericHandler(grpc.GenericRpcHandler):
 
-  def __init__(self, test):
-    self._test = test
+    def __init__(self, test):
+        self._test = test
 
-  def service(self, handler_call_details):
-    if handler_call_details.method == _UNARY_UNARY:
-      return _MethodHandler(self._test, False, False)
-    elif handler_call_details.method == _UNARY_STREAM:
-      return _MethodHandler(self._test, False, True)
-    elif handler_call_details.method == _STREAM_UNARY:
-      return _MethodHandler(self._test, True, False)
-    elif handler_call_details.method == _STREAM_STREAM:
-      return _MethodHandler(self._test, True, True)
-    else:
-      return None
+    def service(self, handler_call_details):
+        if handler_call_details.method == _UNARY_UNARY:
+            return _MethodHandler(self._test, False, False)
+        elif handler_call_details.method == _UNARY_STREAM:
+            return _MethodHandler(self._test, False, True)
+        elif handler_call_details.method == _STREAM_UNARY:
+            return _MethodHandler(self._test, True, False)
+        elif handler_call_details.method == _STREAM_STREAM:
+            return _MethodHandler(self._test, True, True)
+        else:
+            return None
 
 
 class MetadataTest(unittest.TestCase):
 
-  def setUp(self):
-    self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    self._server = grpc.server(
-        self._server_pool, handlers=(_GenericHandler(weakref.proxy(self)),))
-    port = self._server.add_insecure_port('[::]:0')
-    self._server.start()
-    self._channel = grpc.insecure_channel('localhost:%d' % port,
-                                          options=_CHANNEL_ARGS)
-
-  def tearDown(self):
-    self._server.stop(0)
-
-  def testUnaryUnary(self):
-    multi_callable = self._channel.unary_unary(_UNARY_UNARY)
-    unused_response, call = multi_callable.with_call(
-        _REQUEST, metadata=_CLIENT_METADATA)
-    self.assertTrue(test_common.metadata_transmitted(
-        _SERVER_INITIAL_METADATA, call.initial_metadata()))
-    self.assertTrue(test_common.metadata_transmitted(
-        _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-
-  def testUnaryStream(self):
-    multi_callable = self._channel.unary_stream(_UNARY_STREAM)
-    call = multi_callable(_REQUEST, metadata=_CLIENT_METADATA)
-    self.assertTrue(test_common.metadata_transmitted(
-        _SERVER_INITIAL_METADATA, call.initial_metadata()))
-    for _ in call:
-      pass
-    self.assertTrue(test_common.metadata_transmitted(
-        _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-
-  def testStreamUnary(self):
-    multi_callable = self._channel.stream_unary(_STREAM_UNARY)
-    unused_response, call = multi_callable.with_call(
-        [_REQUEST] * test_constants.STREAM_LENGTH,
-        metadata=_CLIENT_METADATA)
-    self.assertTrue(test_common.metadata_transmitted(
-        _SERVER_INITIAL_METADATA, call.initial_metadata()))
-    self.assertTrue(test_common.metadata_transmitted(
-        _SERVER_TRAILING_METADATA, call.trailing_metadata()))
-
-  def testStreamStream(self):
-    multi_callable = self._channel.stream_stream(_STREAM_STREAM)
-    call = multi_callable([_REQUEST] * test_constants.STREAM_LENGTH,
-                          metadata=_CLIENT_METADATA)
-    self.assertTrue(test_common.metadata_transmitted(
-        _SERVER_INITIAL_METADATA, call.initial_metadata()))
-    for _ in call:
-      pass
-    self.assertTrue(test_common.metadata_transmitted(
-        _SERVER_TRAILING_METADATA, call.trailing_metadata()))
+    def setUp(self):
+        self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        self._server = grpc.server(
+            self._server_pool, handlers=(_GenericHandler(weakref.proxy(self)),))
+        port = self._server.add_insecure_port('[::]:0')
+        self._server.start()
+        self._channel = grpc.insecure_channel(
+            'localhost:%d' % port, options=_CHANNEL_ARGS)
+
+    def tearDown(self):
+        self._server.stop(0)
+
+    def testUnaryUnary(self):
+        multi_callable = self._channel.unary_unary(_UNARY_UNARY)
+        unused_response, call = multi_callable.with_call(
+            _REQUEST, metadata=_CLIENT_METADATA)
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             call.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+
+    def testUnaryStream(self):
+        multi_callable = self._channel.unary_stream(_UNARY_STREAM)
+        call = multi_callable(_REQUEST, metadata=_CLIENT_METADATA)
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             call.initial_metadata()))
+        for _ in call:
+            pass
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+
+    def testStreamUnary(self):
+        multi_callable = self._channel.stream_unary(_STREAM_UNARY)
+        unused_response, call = multi_callable.with_call(
+            iter([_REQUEST] * test_constants.STREAM_LENGTH),
+            metadata=_CLIENT_METADATA)
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             call.initial_metadata()))
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
+
+    def testStreamStream(self):
+        multi_callable = self._channel.stream_stream(_STREAM_STREAM)
+        call = multi_callable(
+            iter([_REQUEST] * test_constants.STREAM_LENGTH),
+            metadata=_CLIENT_METADATA)
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_INITIAL_METADATA,
+                                             call.initial_metadata()))
+        for _ in call:
+            pass
+        self.assertTrue(
+            test_common.metadata_transmitted(_SERVER_TRAILING_METADATA,
+                                             call.trailing_metadata()))
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_rpc_test.py b/src/python/grpcio_tests/tests/unit/_rpc_test.py
index eb00156da514857a44342b1acb69b16c803d47bd..2cf6dfea6202c986133a4b60789b214339ac9d32 100644
--- a/src/python/grpcio_tests/tests/unit/_rpc_test.py
+++ b/src/python/grpcio_tests/tests/unit/_rpc_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Test of RPCs made against gRPC Python's application-layer API."""
 
 import itertools
@@ -53,742 +52,797 @@ _STREAM_STREAM = '/test/StreamStream'
 
 class _Callback(object):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._value = None
-    self._called = False
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._value = None
+        self._called = False
 
-  def __call__(self, value):
-    with self._condition:
-      self._value = value
-      self._called = True
-      self._condition.notify_all()
+    def __call__(self, value):
+        with self._condition:
+            self._value = value
+            self._called = True
+            self._condition.notify_all()
 
-  def value(self):
-    with self._condition:
-      while not self._called:
-        self._condition.wait()
-      return self._value
+    def value(self):
+        with self._condition:
+            while not self._called:
+                self._condition.wait()
+            return self._value
 
 
 class _Handler(object):
 
-  def __init__(self, control):
-    self._control = control
-
-  def handle_unary_unary(self, request, servicer_context):
-    self._control.control()
-    if servicer_context is not None:
-      servicer_context.set_trailing_metadata((('testkey', 'testvalue',),))
-    return request
-
-  def handle_unary_stream(self, request, servicer_context):
-    for _ in range(test_constants.STREAM_LENGTH):
-      self._control.control()
-      yield request
-    self._control.control()
-    if servicer_context is not None:
-      servicer_context.set_trailing_metadata((('testkey', 'testvalue',),))
-
-  def handle_stream_unary(self, request_iterator, servicer_context):
-    if servicer_context is not None:
-      servicer_context.invocation_metadata()
-    self._control.control()
-    response_elements = []
-    for request in request_iterator:
-      self._control.control()
-      response_elements.append(request)
-    self._control.control()
-    if servicer_context is not None:
-      servicer_context.set_trailing_metadata((('testkey', 'testvalue',),))
-    return b''.join(response_elements)
-
-  def handle_stream_stream(self, request_iterator, servicer_context):
-    self._control.control()
-    if servicer_context is not None:
-      servicer_context.set_trailing_metadata((('testkey', 'testvalue',),))
-    for request in request_iterator:
-      self._control.control()
-      yield request
-    self._control.control()
+    def __init__(self, control):
+        self._control = control
+
+    def handle_unary_unary(self, request, servicer_context):
+        self._control.control()
+        if servicer_context is not None:
+            servicer_context.set_trailing_metadata(((
+                'testkey',
+                'testvalue',),))
+        return request
+
+    def handle_unary_stream(self, request, servicer_context):
+        for _ in range(test_constants.STREAM_LENGTH):
+            self._control.control()
+            yield request
+        self._control.control()
+        if servicer_context is not None:
+            servicer_context.set_trailing_metadata(((
+                'testkey',
+                'testvalue',),))
+
+    def handle_stream_unary(self, request_iterator, servicer_context):
+        if servicer_context is not None:
+            servicer_context.invocation_metadata()
+        self._control.control()
+        response_elements = []
+        for request in request_iterator:
+            self._control.control()
+            response_elements.append(request)
+        self._control.control()
+        if servicer_context is not None:
+            servicer_context.set_trailing_metadata(((
+                'testkey',
+                'testvalue',),))
+        return b''.join(response_elements)
+
+    def handle_stream_stream(self, request_iterator, servicer_context):
+        self._control.control()
+        if servicer_context is not None:
+            servicer_context.set_trailing_metadata(((
+                'testkey',
+                'testvalue',),))
+        for request in request_iterator:
+            self._control.control()
+            yield request
+        self._control.control()
 
 
 class _MethodHandler(grpc.RpcMethodHandler):
 
-  def __init__(
-      self, request_streaming, response_streaming, request_deserializer,
-      response_serializer, unary_unary, unary_stream, stream_unary,
-      stream_stream):
-    self.request_streaming = request_streaming
-    self.response_streaming = response_streaming
-    self.request_deserializer = request_deserializer
-    self.response_serializer = response_serializer
-    self.unary_unary = unary_unary
-    self.unary_stream = unary_stream
-    self.stream_unary = stream_unary
-    self.stream_stream = stream_stream
+    def __init__(self, request_streaming, response_streaming,
+                 request_deserializer, response_serializer, unary_unary,
+                 unary_stream, stream_unary, stream_stream):
+        self.request_streaming = request_streaming
+        self.response_streaming = response_streaming
+        self.request_deserializer = request_deserializer
+        self.response_serializer = response_serializer
+        self.unary_unary = unary_unary
+        self.unary_stream = unary_stream
+        self.stream_unary = stream_unary
+        self.stream_stream = stream_stream
 
 
 class _GenericHandler(grpc.GenericRpcHandler):
 
-  def __init__(self, handler):
-    self._handler = handler
-
-  def service(self, handler_call_details):
-    if handler_call_details.method == _UNARY_UNARY:
-      return _MethodHandler(
-          False, False, None, None, self._handler.handle_unary_unary, None,
-          None, None)
-    elif handler_call_details.method == _UNARY_STREAM:
-      return _MethodHandler(
-        False, True, _DESERIALIZE_REQUEST, _SERIALIZE_RESPONSE, None,
-        self._handler.handle_unary_stream, None, None)
-    elif handler_call_details.method == _STREAM_UNARY:
-      return _MethodHandler(
-          True, False, _DESERIALIZE_REQUEST, _SERIALIZE_RESPONSE, None, None,
-          self._handler.handle_stream_unary, None)
-    elif handler_call_details.method == _STREAM_STREAM:
-      return _MethodHandler(
-          True, True, None, None, None, None, None,
-          self._handler.handle_stream_stream)
-    else:
-      return None
+    def __init__(self, handler):
+        self._handler = handler
+
+    def service(self, handler_call_details):
+        if handler_call_details.method == _UNARY_UNARY:
+            return _MethodHandler(False, False, None, None,
+                                  self._handler.handle_unary_unary, None, None,
+                                  None)
+        elif handler_call_details.method == _UNARY_STREAM:
+            return _MethodHandler(False, True, _DESERIALIZE_REQUEST,
+                                  _SERIALIZE_RESPONSE, None,
+                                  self._handler.handle_unary_stream, None, None)
+        elif handler_call_details.method == _STREAM_UNARY:
+            return _MethodHandler(True, False, _DESERIALIZE_REQUEST,
+                                  _SERIALIZE_RESPONSE, None, None,
+                                  self._handler.handle_stream_unary, None)
+        elif handler_call_details.method == _STREAM_STREAM:
+            return _MethodHandler(True, True, None, None, None, None, None,
+                                  self._handler.handle_stream_stream)
+        else:
+            return None
 
 
 def _unary_unary_multi_callable(channel):
-  return channel.unary_unary(_UNARY_UNARY)
+    return channel.unary_unary(_UNARY_UNARY)
 
 
 def _unary_stream_multi_callable(channel):
-  return channel.unary_stream(
-      _UNARY_STREAM,
-      request_serializer=_SERIALIZE_REQUEST,
-      response_deserializer=_DESERIALIZE_RESPONSE)
+    return channel.unary_stream(
+        _UNARY_STREAM,
+        request_serializer=_SERIALIZE_REQUEST,
+        response_deserializer=_DESERIALIZE_RESPONSE)
 
 
 def _stream_unary_multi_callable(channel):
-  return channel.stream_unary(
-      _STREAM_UNARY,
-      request_serializer=_SERIALIZE_REQUEST,
-      response_deserializer=_DESERIALIZE_RESPONSE)
+    return channel.stream_unary(
+        _STREAM_UNARY,
+        request_serializer=_SERIALIZE_REQUEST,
+        response_deserializer=_DESERIALIZE_RESPONSE)
 
 
 def _stream_stream_multi_callable(channel):
-  return channel.stream_stream(_STREAM_STREAM)
+    return channel.stream_stream(_STREAM_STREAM)
 
 
 class RPCTest(unittest.TestCase):
 
-  def setUp(self):
-    self._control = test_control.PauseFailControl()
-    self._handler = _Handler(self._control)
-    self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+    def setUp(self):
+        self._control = test_control.PauseFailControl()
+        self._handler = _Handler(self._control)
+        self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
 
-    self._server = grpc.server(self._server_pool)
-    port = self._server.add_insecure_port('[::]:0')
-    self._server.add_generic_rpc_handlers((_GenericHandler(self._handler),))
-    self._server.start()
+        self._server = grpc.server(self._server_pool)
+        port = self._server.add_insecure_port('[::]:0')
+        self._server.add_generic_rpc_handlers((_GenericHandler(self._handler),))
+        self._server.start()
 
-    self._channel = grpc.insecure_channel('localhost:%d' % port)
-
-  def tearDown(self):
-    self._server.stop(None)
-    self._server_pool.shutdown(wait=True)
-
-  def testUnrecognizedMethod(self):
-    request = b'abc'
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      self._channel.unary_unary('NoSuchMethod')(request)
-
-    self.assertEqual(
-        grpc.StatusCode.UNIMPLEMENTED, exception_context.exception.code())
-
-  def testSuccessfulUnaryRequestBlockingUnaryResponse(self):
-    request = b'\x07\x08'
-    expected_response = self._handler.handle_unary_unary(request, None)
-
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    response = multi_callable(
-        request, metadata=(
-            ('test', 'SuccessfulUnaryRequestBlockingUnaryResponse'),))
-
-    self.assertEqual(expected_response, response)
-
-  def testSuccessfulUnaryRequestBlockingUnaryResponseWithCall(self):
-    request = b'\x07\x08'
-    expected_response = self._handler.handle_unary_unary(request, None)
-
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    response, call = multi_callable.with_call(
-        request, metadata=(
-            ('test', 'SuccessfulUnaryRequestBlockingUnaryResponseWithCall'),))
-
-    self.assertEqual(expected_response, response)
-    self.assertIs(grpc.StatusCode.OK, call.code())
-
-  def testSuccessfulUnaryRequestFutureUnaryResponse(self):
-    request = b'\x07\x08'
-    expected_response = self._handler.handle_unary_unary(request, None)
-
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    response_future = multi_callable.future(
-        request, metadata=(
-            ('test', 'SuccessfulUnaryRequestFutureUnaryResponse'),))
-    response = response_future.result()
-
-    self.assertIsInstance(response_future, grpc.Future)
-    self.assertIsInstance(response_future, grpc.Call)
-    self.assertEqual(expected_response, response)
-    self.assertIsNone(response_future.exception())
-    self.assertIsNone(response_future.traceback())
-
-  def testSuccessfulUnaryRequestStreamResponse(self):
-    request = b'\x37\x58'
-    expected_responses = tuple(self._handler.handle_unary_stream(request, None))
-
-    multi_callable = _unary_stream_multi_callable(self._channel)
-    response_iterator = multi_callable(
-        request,
-        metadata=(('test', 'SuccessfulUnaryRequestStreamResponse'),))
-    responses = tuple(response_iterator)
-
-    self.assertSequenceEqual(expected_responses, responses)
-
-  def testSuccessfulStreamRequestBlockingUnaryResponse(self):
-    requests = tuple(b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH))
-    expected_response = self._handler.handle_stream_unary(iter(requests), None)
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    response = multi_callable(
-        request_iterator,
-        metadata=(('test', 'SuccessfulStreamRequestBlockingUnaryResponse'),))
-
-    self.assertEqual(expected_response, response)
-
-  def testSuccessfulStreamRequestBlockingUnaryResponseWithCall(self):
-    requests = tuple(b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH))
-    expected_response = self._handler.handle_stream_unary(iter(requests), None)
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    response, call = multi_callable.with_call(
-        request_iterator,
-        metadata=(
-            ('test', 'SuccessfulStreamRequestBlockingUnaryResponseWithCall'),
-        ))
-
-    self.assertEqual(expected_response, response)
-    self.assertIs(grpc.StatusCode.OK, call.code())
-
-  def testSuccessfulStreamRequestFutureUnaryResponse(self):
-    requests = tuple(b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH))
-    expected_response = self._handler.handle_stream_unary(iter(requests), None)
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    response_future = multi_callable.future(
-        request_iterator,
-        metadata=(
-            ('test', 'SuccessfulStreamRequestFutureUnaryResponse'),))
-    response = response_future.result()
-
-    self.assertEqual(expected_response, response)
-    self.assertIsNone(response_future.exception())
-    self.assertIsNone(response_future.traceback())
-
-  def testSuccessfulStreamRequestStreamResponse(self):
-    requests = tuple(b'\x77\x58' for _ in range(test_constants.STREAM_LENGTH))
-    expected_responses = tuple(
-        self._handler.handle_stream_stream(iter(requests), None))
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_stream_multi_callable(self._channel)
-    response_iterator = multi_callable(
-        request_iterator,
-        metadata=(('test', 'SuccessfulStreamRequestStreamResponse'),))
-    responses = tuple(response_iterator)
-
-    self.assertSequenceEqual(expected_responses, responses)
-
-  def testSequentialInvocations(self):
-    first_request = b'\x07\x08'
-    second_request = b'\x0809'
-    expected_first_response = self._handler.handle_unary_unary(
-        first_request, None)
-    expected_second_response = self._handler.handle_unary_unary(
-        second_request, None)
-
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    first_response = multi_callable(
-        first_request, metadata=(('test', 'SequentialInvocations'),))
-    second_response = multi_callable(
-        second_request, metadata=(('test', 'SequentialInvocations'),))
-
-    self.assertEqual(expected_first_response, first_response)
-    self.assertEqual(expected_second_response, second_response)
-
-  def testConcurrentBlockingInvocations(self):
-    pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    requests = tuple(b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH))
-    expected_response = self._handler.handle_stream_unary(iter(requests), None)
-    expected_responses = [expected_response] * test_constants.THREAD_CONCURRENCY
-    response_futures = [None] * test_constants.THREAD_CONCURRENCY
-
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    for index in range(test_constants.THREAD_CONCURRENCY):
-      request_iterator = iter(requests)
-      response_future = pool.submit(
-          multi_callable, request_iterator,
-          metadata=(('test', 'ConcurrentBlockingInvocations'),))
-      response_futures[index] = response_future
-    responses = tuple(
-        response_future.result() for response_future in response_futures)
-
-    pool.shutdown(wait=True)
-    self.assertSequenceEqual(expected_responses, responses)
-
-  def testConcurrentFutureInvocations(self):
-    requests = tuple(b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH))
-    expected_response = self._handler.handle_stream_unary(iter(requests), None)
-    expected_responses = [expected_response] * test_constants.THREAD_CONCURRENCY
-    response_futures = [None] * test_constants.THREAD_CONCURRENCY
-
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    for index in range(test_constants.THREAD_CONCURRENCY):
-      request_iterator = iter(requests)
-      response_future = multi_callable.future(
-          request_iterator,
-          metadata=(('test', 'ConcurrentFutureInvocations'),))
-      response_futures[index] = response_future
-    responses = tuple(
-        response_future.result() for response_future in response_futures)
-
-    self.assertSequenceEqual(expected_responses, responses)
-
-  def testWaitingForSomeButNotAllConcurrentFutureInvocations(self):
-    pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    request = b'\x67\x68'
-    expected_response = self._handler.handle_unary_unary(request, None)
-    response_futures = [None] * test_constants.THREAD_CONCURRENCY
-    lock = threading.Lock()
-    test_is_running_cell = [True]
-    def wrap_future(future):
-      def wrap():
-        try:
-          return future.result()
-        except grpc.RpcError:
-          with lock:
-            if test_is_running_cell[0]:
-              raise
-          return None
-      return wrap
-
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    for index in range(test_constants.THREAD_CONCURRENCY):
-      inner_response_future = multi_callable.future(
-          request,
-          metadata=(
-              ('test',
-               'WaitingForSomeButNotAllConcurrentFutureInvocations'),))
-      outer_response_future = pool.submit(wrap_future(inner_response_future))
-      response_futures[index] = outer_response_future
-
-    some_completed_response_futures_iterator = itertools.islice(
-        futures.as_completed(response_futures),
-        test_constants.THREAD_CONCURRENCY // 2)
-    for response_future in some_completed_response_futures_iterator:
-      self.assertEqual(expected_response, response_future.result())
-    with lock:
-      test_is_running_cell[0] = False
-
-  def testConsumingOneStreamResponseUnaryRequest(self):
-    request = b'\x57\x38'
-
-    multi_callable = _unary_stream_multi_callable(self._channel)
-    response_iterator = multi_callable(
-        request,
-        metadata=(
-            ('test', 'ConsumingOneStreamResponseUnaryRequest'),))
-    next(response_iterator)
-
-  def testConsumingSomeButNotAllStreamResponsesUnaryRequest(self):
-    request = b'\x57\x38'
-
-    multi_callable = _unary_stream_multi_callable(self._channel)
-    response_iterator = multi_callable(
-        request,
-        metadata=(
-            ('test', 'ConsumingSomeButNotAllStreamResponsesUnaryRequest'),))
-    for _ in range(test_constants.STREAM_LENGTH // 2):
-      next(response_iterator)
-
-  def testConsumingSomeButNotAllStreamResponsesStreamRequest(self):
-    requests = tuple(b'\x67\x88' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_stream_multi_callable(self._channel)
-    response_iterator = multi_callable(
-        request_iterator,
-        metadata=(
-            ('test', 'ConsumingSomeButNotAllStreamResponsesStreamRequest'),))
-    for _ in range(test_constants.STREAM_LENGTH // 2):
-      next(response_iterator)
-
-  def testConsumingTooManyStreamResponsesStreamRequest(self):
-    requests = tuple(b'\x67\x88' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_stream_multi_callable(self._channel)
-    response_iterator = multi_callable(
-        request_iterator,
-        metadata=(
-            ('test', 'ConsumingTooManyStreamResponsesStreamRequest'),))
-    for _ in range(test_constants.STREAM_LENGTH):
-      next(response_iterator)
-    for _ in range(test_constants.STREAM_LENGTH):
-      with self.assertRaises(StopIteration):
-        next(response_iterator)
+        self._channel = grpc.insecure_channel('localhost:%d' % port)
 
-    self.assertIsNotNone(response_iterator.initial_metadata())
-    self.assertIs(grpc.StatusCode.OK, response_iterator.code())
-    self.assertIsNotNone(response_iterator.details())
-    self.assertIsNotNone(response_iterator.trailing_metadata())
-
-  def testCancelledUnaryRequestUnaryResponse(self):
-    request = b'\x07\x17'
-
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    with self._control.pause():
-      response_future = multi_callable.future(
-          request,
-          metadata=(('test', 'CancelledUnaryRequestUnaryResponse'),))
-      response_future.cancel()
-
-    self.assertTrue(response_future.cancelled())
-    with self.assertRaises(grpc.FutureCancelledError):
-      response_future.result()
-    with self.assertRaises(grpc.FutureCancelledError):
-      response_future.exception()
-    with self.assertRaises(grpc.FutureCancelledError):
-      response_future.traceback()
-    self.assertIs(grpc.StatusCode.CANCELLED, response_future.code())
-
-  def testCancelledUnaryRequestStreamResponse(self):
-    request = b'\x07\x19'
-
-    multi_callable = _unary_stream_multi_callable(self._channel)
-    with self._control.pause():
-      response_iterator = multi_callable(
-          request,
-          metadata=(('test', 'CancelledUnaryRequestStreamResponse'),))
-      self._control.block_until_paused()
-      response_iterator.cancel()
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      next(response_iterator)
-    self.assertIs(grpc.StatusCode.CANCELLED, exception_context.exception.code())
-    self.assertIsNotNone(response_iterator.initial_metadata())
-    self.assertIs(grpc.StatusCode.CANCELLED, response_iterator.code())
-    self.assertIsNotNone(response_iterator.details())
-    self.assertIsNotNone(response_iterator.trailing_metadata())
-
-  def testCancelledStreamRequestUnaryResponse(self):
-    requests = tuple(b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    with self._control.pause():
-      response_future = multi_callable.future(
-          request_iterator,
-          metadata=(('test', 'CancelledStreamRequestUnaryResponse'),))
-      self._control.block_until_paused()
-      response_future.cancel()
-
-    self.assertTrue(response_future.cancelled())
-    with self.assertRaises(grpc.FutureCancelledError):
-      response_future.result()
-    with self.assertRaises(grpc.FutureCancelledError):
-      response_future.exception()
-    with self.assertRaises(grpc.FutureCancelledError):
-      response_future.traceback()
-    self.assertIsNotNone(response_future.initial_metadata())
-    self.assertIs(grpc.StatusCode.CANCELLED, response_future.code())
-    self.assertIsNotNone(response_future.details())
-    self.assertIsNotNone(response_future.trailing_metadata())
-
-  def testCancelledStreamRequestStreamResponse(self):
-    requests = tuple(b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_stream_multi_callable(self._channel)
-    with self._control.pause():
-      response_iterator = multi_callable(
-          request_iterator,
-          metadata=(('test', 'CancelledStreamRequestStreamResponse'),))
-      response_iterator.cancel()
-
-    with self.assertRaises(grpc.RpcError):
-      next(response_iterator)
-    self.assertIsNotNone(response_iterator.initial_metadata())
-    self.assertIs(grpc.StatusCode.CANCELLED, response_iterator.code())
-    self.assertIsNotNone(response_iterator.details())
-    self.assertIsNotNone(response_iterator.trailing_metadata())
-
-  def testExpiredUnaryRequestBlockingUnaryResponse(self):
-    request = b'\x07\x17'
-
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    with self._control.pause():
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        multi_callable.with_call(
-            request, timeout=test_constants.SHORT_TIMEOUT,
-            metadata=(('test', 'ExpiredUnaryRequestBlockingUnaryResponse'),))
-
-    self.assertIsInstance(exception_context.exception, grpc.Call)
-    self.assertIsNotNone(exception_context.exception.initial_metadata())
-    self.assertIs(
-        grpc.StatusCode.DEADLINE_EXCEEDED, exception_context.exception.code())
-    self.assertIsNotNone(exception_context.exception.details())
-    self.assertIsNotNone(exception_context.exception.trailing_metadata())
-
-  def testExpiredUnaryRequestFutureUnaryResponse(self):
-    request = b'\x07\x17'
-    callback = _Callback()
-
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    with self._control.pause():
-      response_future = multi_callable.future(
-          request, timeout=test_constants.SHORT_TIMEOUT,
-          metadata=(('test', 'ExpiredUnaryRequestFutureUnaryResponse'),))
-      response_future.add_done_callback(callback)
-      value_passed_to_callback = callback.value()
-
-    self.assertIs(response_future, value_passed_to_callback)
-    self.assertIsNotNone(response_future.initial_metadata())
-    self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED, response_future.code())
-    self.assertIsNotNone(response_future.details())
-    self.assertIsNotNone(response_future.trailing_metadata())
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      response_future.result()
-    self.assertIs(
-        grpc.StatusCode.DEADLINE_EXCEEDED, exception_context.exception.code())
-    self.assertIsInstance(response_future.exception(), grpc.RpcError)
-    self.assertIsNotNone(response_future.traceback())
-    self.assertIs(
-        grpc.StatusCode.DEADLINE_EXCEEDED, response_future.exception().code())
-
-  def testExpiredUnaryRequestStreamResponse(self):
-    request = b'\x07\x19'
-
-    multi_callable = _unary_stream_multi_callable(self._channel)
-    with self._control.pause():
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        response_iterator = multi_callable(
-            request, timeout=test_constants.SHORT_TIMEOUT,
-            metadata=(('test', 'ExpiredUnaryRequestStreamResponse'),))
-        next(response_iterator)
+    def tearDown(self):
+        self._server.stop(None)
+        self._server_pool.shutdown(wait=True)
 
-    self.assertIs(
-        grpc.StatusCode.DEADLINE_EXCEEDED, exception_context.exception.code())
-    self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED, response_iterator.code())
+    def testUnrecognizedMethod(self):
+        request = b'abc'
 
-  def testExpiredStreamRequestBlockingUnaryResponse(self):
-    requests = tuple(b'\x07\x08' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            self._channel.unary_unary('NoSuchMethod')(request)
 
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    with self._control.pause():
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        multi_callable(
-            request_iterator, timeout=test_constants.SHORT_TIMEOUT,
-            metadata=(('test', 'ExpiredStreamRequestBlockingUnaryResponse'),))
-
-    self.assertIsInstance(exception_context.exception, grpc.RpcError)
-    self.assertIsInstance(exception_context.exception, grpc.Call)
-    self.assertIsNotNone(exception_context.exception.initial_metadata())
-    self.assertIs(
-        grpc.StatusCode.DEADLINE_EXCEEDED, exception_context.exception.code())
-    self.assertIsNotNone(exception_context.exception.details())
-    self.assertIsNotNone(exception_context.exception.trailing_metadata())
-
-  def testExpiredStreamRequestFutureUnaryResponse(self):
-    requests = tuple(b'\x07\x18' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
-    callback = _Callback()
-
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    with self._control.pause():
-      response_future = multi_callable.future(
-          request_iterator, timeout=test_constants.SHORT_TIMEOUT,
-          metadata=(('test', 'ExpiredStreamRequestFutureUnaryResponse'),))
-      with self.assertRaises(grpc.FutureTimeoutError):
-        response_future.result(timeout=test_constants.SHORT_TIMEOUT / 2.0)
-      response_future.add_done_callback(callback)
-      value_passed_to_callback = callback.value()
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      response_future.result()
-    self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED, response_future.code())
-    self.assertIs(
-        grpc.StatusCode.DEADLINE_EXCEEDED, exception_context.exception.code())
-    self.assertIsInstance(response_future.exception(), grpc.RpcError)
-    self.assertIsNotNone(response_future.traceback())
-    self.assertIs(response_future, value_passed_to_callback)
-    self.assertIsNotNone(response_future.initial_metadata())
-    self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED, response_future.code())
-    self.assertIsNotNone(response_future.details())
-    self.assertIsNotNone(response_future.trailing_metadata())
-
-  def testExpiredStreamRequestStreamResponse(self):
-    requests = tuple(b'\x67\x18' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_stream_multi_callable(self._channel)
-    with self._control.pause():
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        response_iterator = multi_callable(
-            request_iterator, timeout=test_constants.SHORT_TIMEOUT,
-            metadata=(('test', 'ExpiredStreamRequestStreamResponse'),))
-        next(response_iterator)
+        self.assertEqual(grpc.StatusCode.UNIMPLEMENTED,
+                         exception_context.exception.code())
+
+    def testSuccessfulUnaryRequestBlockingUnaryResponse(self):
+        request = b'\x07\x08'
+        expected_response = self._handler.handle_unary_unary(request, None)
+
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        response = multi_callable(
+            request,
+            metadata=(('test', 'SuccessfulUnaryRequestBlockingUnaryResponse'),))
+
+        self.assertEqual(expected_response, response)
 
-    self.assertIs(
-        grpc.StatusCode.DEADLINE_EXCEEDED, exception_context.exception.code())
-    self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED, response_iterator.code())
+    def testSuccessfulUnaryRequestBlockingUnaryResponseWithCall(self):
+        request = b'\x07\x08'
+        expected_response = self._handler.handle_unary_unary(request, None)
 
-  def testFailedUnaryRequestBlockingUnaryResponse(self):
-    request = b'\x37\x17'
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        response, call = multi_callable.with_call(
+            request,
+            metadata=(('test',
+                       'SuccessfulUnaryRequestBlockingUnaryResponseWithCall'),))
+
+        self.assertEqual(expected_response, response)
+        self.assertIs(grpc.StatusCode.OK, call.code())
+
+    def testSuccessfulUnaryRequestFutureUnaryResponse(self):
+        request = b'\x07\x08'
+        expected_response = self._handler.handle_unary_unary(request, None)
 
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    with self._control.fail():
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        multi_callable.with_call(
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        response_future = multi_callable.future(
             request,
-            metadata=(('test', 'FailedUnaryRequestBlockingUnaryResponse'),))
-
-    self.assertIs(grpc.StatusCode.UNKNOWN, exception_context.exception.code())
-
-  def testFailedUnaryRequestFutureUnaryResponse(self):
-    request = b'\x37\x17'
-    callback = _Callback()
-
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    with self._control.fail():
-      response_future = multi_callable.future(
-          request,
-          metadata=(('test', 'FailedUnaryRequestFutureUnaryResponse'),))
-      response_future.add_done_callback(callback)
-      value_passed_to_callback = callback.value()
-
-    self.assertIsInstance(response_future, grpc.Future)
-    self.assertIsInstance(response_future, grpc.Call)
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      response_future.result()
-    self.assertIs(
-        grpc.StatusCode.UNKNOWN, exception_context.exception.code())
-    self.assertIsInstance(response_future.exception(), grpc.RpcError)
-    self.assertIsNotNone(response_future.traceback())
-    self.assertIs(grpc.StatusCode.UNKNOWN, response_future.exception().code())
-    self.assertIs(response_future, value_passed_to_callback)
-
-  def testFailedUnaryRequestStreamResponse(self):
-    request = b'\x37\x17'
-
-    multi_callable = _unary_stream_multi_callable(self._channel)
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      with self._control.fail():
+            metadata=(('test', 'SuccessfulUnaryRequestFutureUnaryResponse'),))
+        response = response_future.result()
+
+        self.assertIsInstance(response_future, grpc.Future)
+        self.assertIsInstance(response_future, grpc.Call)
+        self.assertEqual(expected_response, response)
+        self.assertIsNone(response_future.exception())
+        self.assertIsNone(response_future.traceback())
+
+    def testSuccessfulUnaryRequestStreamResponse(self):
+        request = b'\x37\x58'
+        expected_responses = tuple(
+            self._handler.handle_unary_stream(request, None))
+
+        multi_callable = _unary_stream_multi_callable(self._channel)
         response_iterator = multi_callable(
             request,
-            metadata=(('test', 'FailedUnaryRequestStreamResponse'),))
-        next(response_iterator)
+            metadata=(('test', 'SuccessfulUnaryRequestStreamResponse'),))
+        responses = tuple(response_iterator)
 
-    self.assertIs(grpc.StatusCode.UNKNOWN, exception_context.exception.code())
+        self.assertSequenceEqual(expected_responses, responses)
 
-  def testFailedStreamRequestBlockingUnaryResponse(self):
-    requests = tuple(b'\x47\x58' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
+    def testSuccessfulStreamRequestBlockingUnaryResponse(self):
+        requests = tuple(b'\x07\x08'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        expected_response = self._handler.handle_stream_unary(
+            iter(requests), None)
+        request_iterator = iter(requests)
 
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    with self._control.fail():
-      with self.assertRaises(grpc.RpcError) as exception_context:
-        multi_callable(
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        response = multi_callable(
+            request_iterator,
+            metadata=(
+                ('test', 'SuccessfulStreamRequestBlockingUnaryResponse'),))
+
+        self.assertEqual(expected_response, response)
+
+    def testSuccessfulStreamRequestBlockingUnaryResponseWithCall(self):
+        requests = tuple(b'\x07\x08'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        expected_response = self._handler.handle_stream_unary(
+            iter(requests), None)
+        request_iterator = iter(requests)
+
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        response, call = multi_callable.with_call(
+            request_iterator,
+            metadata=(
+                ('test',
+                 'SuccessfulStreamRequestBlockingUnaryResponseWithCall'),))
+
+        self.assertEqual(expected_response, response)
+        self.assertIs(grpc.StatusCode.OK, call.code())
+
+    def testSuccessfulStreamRequestFutureUnaryResponse(self):
+        requests = tuple(b'\x07\x08'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        expected_response = self._handler.handle_stream_unary(
+            iter(requests), None)
+        request_iterator = iter(requests)
+
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        response_future = multi_callable.future(
             request_iterator,
-            metadata=(('test', 'FailedStreamRequestBlockingUnaryResponse'),))
-
-    self.assertIs(grpc.StatusCode.UNKNOWN, exception_context.exception.code())
-
-  def testFailedStreamRequestFutureUnaryResponse(self):
-    requests = tuple(b'\x07\x18' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
-    callback = _Callback()
-
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    with self._control.fail():
-      response_future = multi_callable.future(
-          request_iterator,
-          metadata=(('test', 'FailedStreamRequestFutureUnaryResponse'),))
-      response_future.add_done_callback(callback)
-      value_passed_to_callback = callback.value()
-
-    with self.assertRaises(grpc.RpcError) as exception_context:
-      response_future.result()
-    self.assertIs(grpc.StatusCode.UNKNOWN, response_future.code())
-    self.assertIs(
-        grpc.StatusCode.UNKNOWN, exception_context.exception.code())
-    self.assertIsInstance(response_future.exception(), grpc.RpcError)
-    self.assertIsNotNone(response_future.traceback())
-    self.assertIs(response_future, value_passed_to_callback)
-
-  def testFailedStreamRequestStreamResponse(self):
-    requests = tuple(b'\x67\x88' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
-
-    multi_callable = _stream_stream_multi_callable(self._channel)
-    with self._control.fail():
-      with self.assertRaises(grpc.RpcError) as exception_context:
+            metadata=(('test', 'SuccessfulStreamRequestFutureUnaryResponse'),))
+        response = response_future.result()
+
+        self.assertEqual(expected_response, response)
+        self.assertIsNone(response_future.exception())
+        self.assertIsNone(response_future.traceback())
+
+    def testSuccessfulStreamRequestStreamResponse(self):
+        requests = tuple(b'\x77\x58'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        expected_responses = tuple(
+            self._handler.handle_stream_stream(iter(requests), None))
+        request_iterator = iter(requests)
+
+        multi_callable = _stream_stream_multi_callable(self._channel)
         response_iterator = multi_callable(
             request_iterator,
-            metadata=(('test', 'FailedStreamRequestStreamResponse'),))
-        tuple(response_iterator)
+            metadata=(('test', 'SuccessfulStreamRequestStreamResponse'),))
+        responses = tuple(response_iterator)
+
+        self.assertSequenceEqual(expected_responses, responses)
+
+    def testSequentialInvocations(self):
+        first_request = b'\x07\x08'
+        second_request = b'\x0809'
+        expected_first_response = self._handler.handle_unary_unary(
+            first_request, None)
+        expected_second_response = self._handler.handle_unary_unary(
+            second_request, None)
+
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        first_response = multi_callable(
+            first_request, metadata=(('test', 'SequentialInvocations'),))
+        second_response = multi_callable(
+            second_request, metadata=(('test', 'SequentialInvocations'),))
+
+        self.assertEqual(expected_first_response, first_response)
+        self.assertEqual(expected_second_response, second_response)
+
+    def testConcurrentBlockingInvocations(self):
+        pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        requests = tuple(b'\x07\x08'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        expected_response = self._handler.handle_stream_unary(
+            iter(requests), None)
+        expected_responses = [expected_response
+                             ] * test_constants.THREAD_CONCURRENCY
+        response_futures = [None] * test_constants.THREAD_CONCURRENCY
+
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        for index in range(test_constants.THREAD_CONCURRENCY):
+            request_iterator = iter(requests)
+            response_future = pool.submit(
+                multi_callable,
+                request_iterator,
+                metadata=(('test', 'ConcurrentBlockingInvocations'),))
+            response_futures[index] = response_future
+        responses = tuple(response_future.result()
+                          for response_future in response_futures)
+
+        pool.shutdown(wait=True)
+        self.assertSequenceEqual(expected_responses, responses)
+
+    def testConcurrentFutureInvocations(self):
+        requests = tuple(b'\x07\x08'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        expected_response = self._handler.handle_stream_unary(
+            iter(requests), None)
+        expected_responses = [expected_response
+                             ] * test_constants.THREAD_CONCURRENCY
+        response_futures = [None] * test_constants.THREAD_CONCURRENCY
+
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        for index in range(test_constants.THREAD_CONCURRENCY):
+            request_iterator = iter(requests)
+            response_future = multi_callable.future(
+                request_iterator,
+                metadata=(('test', 'ConcurrentFutureInvocations'),))
+            response_futures[index] = response_future
+        responses = tuple(response_future.result()
+                          for response_future in response_futures)
+
+        self.assertSequenceEqual(expected_responses, responses)
+
+    def testWaitingForSomeButNotAllConcurrentFutureInvocations(self):
+        pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        request = b'\x67\x68'
+        expected_response = self._handler.handle_unary_unary(request, None)
+        response_futures = [None] * test_constants.THREAD_CONCURRENCY
+        lock = threading.Lock()
+        test_is_running_cell = [True]
+
+        def wrap_future(future):
+
+            def wrap():
+                try:
+                    return future.result()
+                except grpc.RpcError:
+                    with lock:
+                        if test_is_running_cell[0]:
+                            raise
+                    return None
+
+            return wrap
+
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        for index in range(test_constants.THREAD_CONCURRENCY):
+            inner_response_future = multi_callable.future(
+                request,
+                metadata=(
+                    ('test',
+                     'WaitingForSomeButNotAllConcurrentFutureInvocations'),))
+            outer_response_future = pool.submit(
+                wrap_future(inner_response_future))
+            response_futures[index] = outer_response_future
+
+        some_completed_response_futures_iterator = itertools.islice(
+            futures.as_completed(response_futures),
+            test_constants.THREAD_CONCURRENCY // 2)
+        for response_future in some_completed_response_futures_iterator:
+            self.assertEqual(expected_response, response_future.result())
+        with lock:
+            test_is_running_cell[0] = False
+
+    def testConsumingOneStreamResponseUnaryRequest(self):
+        request = b'\x57\x38'
+
+        multi_callable = _unary_stream_multi_callable(self._channel)
+        response_iterator = multi_callable(
+            request,
+            metadata=(('test', 'ConsumingOneStreamResponseUnaryRequest'),))
+        next(response_iterator)
+
+    def testConsumingSomeButNotAllStreamResponsesUnaryRequest(self):
+        request = b'\x57\x38'
+
+        multi_callable = _unary_stream_multi_callable(self._channel)
+        response_iterator = multi_callable(
+            request,
+            metadata=(
+                ('test', 'ConsumingSomeButNotAllStreamResponsesUnaryRequest'),))
+        for _ in range(test_constants.STREAM_LENGTH // 2):
+            next(response_iterator)
 
-    self.assertIs(grpc.StatusCode.UNKNOWN, exception_context.exception.code())
-    self.assertIs(grpc.StatusCode.UNKNOWN, response_iterator.code())
+    def testConsumingSomeButNotAllStreamResponsesStreamRequest(self):
+        requests = tuple(b'\x67\x88'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
 
-  def testIgnoredUnaryRequestFutureUnaryResponse(self):
-    request = b'\x37\x17'
+        multi_callable = _stream_stream_multi_callable(self._channel)
+        response_iterator = multi_callable(
+            request_iterator,
+            metadata=(('test',
+                       'ConsumingSomeButNotAllStreamResponsesStreamRequest'),))
+        for _ in range(test_constants.STREAM_LENGTH // 2):
+            next(response_iterator)
 
-    multi_callable = _unary_unary_multi_callable(self._channel)
-    multi_callable.future(
-        request,
-        metadata=(('test', 'IgnoredUnaryRequestFutureUnaryResponse'),))
+    def testConsumingTooManyStreamResponsesStreamRequest(self):
+        requests = tuple(b'\x67\x88'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
 
-  def testIgnoredUnaryRequestStreamResponse(self):
-    request = b'\x37\x17'
+        multi_callable = _stream_stream_multi_callable(self._channel)
+        response_iterator = multi_callable(
+            request_iterator,
+            metadata=(
+                ('test', 'ConsumingTooManyStreamResponsesStreamRequest'),))
+        for _ in range(test_constants.STREAM_LENGTH):
+            next(response_iterator)
+        for _ in range(test_constants.STREAM_LENGTH):
+            with self.assertRaises(StopIteration):
+                next(response_iterator)
+
+        self.assertIsNotNone(response_iterator.initial_metadata())
+        self.assertIs(grpc.StatusCode.OK, response_iterator.code())
+        self.assertIsNotNone(response_iterator.details())
+        self.assertIsNotNone(response_iterator.trailing_metadata())
+
+    def testCancelledUnaryRequestUnaryResponse(self):
+        request = b'\x07\x17'
+
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        with self._control.pause():
+            response_future = multi_callable.future(
+                request,
+                metadata=(('test', 'CancelledUnaryRequestUnaryResponse'),))
+            response_future.cancel()
+
+        self.assertTrue(response_future.cancelled())
+        with self.assertRaises(grpc.FutureCancelledError):
+            response_future.result()
+        with self.assertRaises(grpc.FutureCancelledError):
+            response_future.exception()
+        with self.assertRaises(grpc.FutureCancelledError):
+            response_future.traceback()
+        self.assertIs(grpc.StatusCode.CANCELLED, response_future.code())
+
+    def testCancelledUnaryRequestStreamResponse(self):
+        request = b'\x07\x19'
+
+        multi_callable = _unary_stream_multi_callable(self._channel)
+        with self._control.pause():
+            response_iterator = multi_callable(
+                request,
+                metadata=(('test', 'CancelledUnaryRequestStreamResponse'),))
+            self._control.block_until_paused()
+            response_iterator.cancel()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            next(response_iterator)
+        self.assertIs(grpc.StatusCode.CANCELLED,
+                      exception_context.exception.code())
+        self.assertIsNotNone(response_iterator.initial_metadata())
+        self.assertIs(grpc.StatusCode.CANCELLED, response_iterator.code())
+        self.assertIsNotNone(response_iterator.details())
+        self.assertIsNotNone(response_iterator.trailing_metadata())
+
+    def testCancelledStreamRequestUnaryResponse(self):
+        requests = tuple(b'\x07\x08'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
+
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        with self._control.pause():
+            response_future = multi_callable.future(
+                request_iterator,
+                metadata=(('test', 'CancelledStreamRequestUnaryResponse'),))
+            self._control.block_until_paused()
+            response_future.cancel()
+
+        self.assertTrue(response_future.cancelled())
+        with self.assertRaises(grpc.FutureCancelledError):
+            response_future.result()
+        with self.assertRaises(grpc.FutureCancelledError):
+            response_future.exception()
+        with self.assertRaises(grpc.FutureCancelledError):
+            response_future.traceback()
+        self.assertIsNotNone(response_future.initial_metadata())
+        self.assertIs(grpc.StatusCode.CANCELLED, response_future.code())
+        self.assertIsNotNone(response_future.details())
+        self.assertIsNotNone(response_future.trailing_metadata())
+
+    def testCancelledStreamRequestStreamResponse(self):
+        requests = tuple(b'\x07\x08'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
+
+        multi_callable = _stream_stream_multi_callable(self._channel)
+        with self._control.pause():
+            response_iterator = multi_callable(
+                request_iterator,
+                metadata=(('test', 'CancelledStreamRequestStreamResponse'),))
+            response_iterator.cancel()
+
+        with self.assertRaises(grpc.RpcError):
+            next(response_iterator)
+        self.assertIsNotNone(response_iterator.initial_metadata())
+        self.assertIs(grpc.StatusCode.CANCELLED, response_iterator.code())
+        self.assertIsNotNone(response_iterator.details())
+        self.assertIsNotNone(response_iterator.trailing_metadata())
+
+    def testExpiredUnaryRequestBlockingUnaryResponse(self):
+        request = b'\x07\x17'
+
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        with self._control.pause():
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                multi_callable.with_call(
+                    request,
+                    timeout=test_constants.SHORT_TIMEOUT,
+                    metadata=(
+                        ('test', 'ExpiredUnaryRequestBlockingUnaryResponse'),))
+
+        self.assertIsInstance(exception_context.exception, grpc.Call)
+        self.assertIsNotNone(exception_context.exception.initial_metadata())
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED,
+                      exception_context.exception.code())
+        self.assertIsNotNone(exception_context.exception.details())
+        self.assertIsNotNone(exception_context.exception.trailing_metadata())
+
+    def testExpiredUnaryRequestFutureUnaryResponse(self):
+        request = b'\x07\x17'
+        callback = _Callback()
+
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        with self._control.pause():
+            response_future = multi_callable.future(
+                request,
+                timeout=test_constants.SHORT_TIMEOUT,
+                metadata=(('test', 'ExpiredUnaryRequestFutureUnaryResponse'),))
+            response_future.add_done_callback(callback)
+            value_passed_to_callback = callback.value()
+
+        self.assertIs(response_future, value_passed_to_callback)
+        self.assertIsNotNone(response_future.initial_metadata())
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED, response_future.code())
+        self.assertIsNotNone(response_future.details())
+        self.assertIsNotNone(response_future.trailing_metadata())
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            response_future.result()
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED,
+                      exception_context.exception.code())
+        self.assertIsInstance(response_future.exception(), grpc.RpcError)
+        self.assertIsNotNone(response_future.traceback())
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED,
+                      response_future.exception().code())
+
+    def testExpiredUnaryRequestStreamResponse(self):
+        request = b'\x07\x19'
+
+        multi_callable = _unary_stream_multi_callable(self._channel)
+        with self._control.pause():
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                response_iterator = multi_callable(
+                    request,
+                    timeout=test_constants.SHORT_TIMEOUT,
+                    metadata=(('test', 'ExpiredUnaryRequestStreamResponse'),))
+                next(response_iterator)
+
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED,
+                      exception_context.exception.code())
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED,
+                      response_iterator.code())
+
+    def testExpiredStreamRequestBlockingUnaryResponse(self):
+        requests = tuple(b'\x07\x08'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
+
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        with self._control.pause():
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                multi_callable(
+                    request_iterator,
+                    timeout=test_constants.SHORT_TIMEOUT,
+                    metadata=(
+                        ('test', 'ExpiredStreamRequestBlockingUnaryResponse'),))
+
+        self.assertIsInstance(exception_context.exception, grpc.RpcError)
+        self.assertIsInstance(exception_context.exception, grpc.Call)
+        self.assertIsNotNone(exception_context.exception.initial_metadata())
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED,
+                      exception_context.exception.code())
+        self.assertIsNotNone(exception_context.exception.details())
+        self.assertIsNotNone(exception_context.exception.trailing_metadata())
+
+    def testExpiredStreamRequestFutureUnaryResponse(self):
+        requests = tuple(b'\x07\x18'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
+        callback = _Callback()
+
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        with self._control.pause():
+            response_future = multi_callable.future(
+                request_iterator,
+                timeout=test_constants.SHORT_TIMEOUT,
+                metadata=(('test', 'ExpiredStreamRequestFutureUnaryResponse'),))
+            with self.assertRaises(grpc.FutureTimeoutError):
+                response_future.result(timeout=test_constants.SHORT_TIMEOUT /
+                                       2.0)
+            response_future.add_done_callback(callback)
+            value_passed_to_callback = callback.value()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            response_future.result()
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED, response_future.code())
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED,
+                      exception_context.exception.code())
+        self.assertIsInstance(response_future.exception(), grpc.RpcError)
+        self.assertIsNotNone(response_future.traceback())
+        self.assertIs(response_future, value_passed_to_callback)
+        self.assertIsNotNone(response_future.initial_metadata())
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED, response_future.code())
+        self.assertIsNotNone(response_future.details())
+        self.assertIsNotNone(response_future.trailing_metadata())
+
+    def testExpiredStreamRequestStreamResponse(self):
+        requests = tuple(b'\x67\x18'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
+
+        multi_callable = _stream_stream_multi_callable(self._channel)
+        with self._control.pause():
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                response_iterator = multi_callable(
+                    request_iterator,
+                    timeout=test_constants.SHORT_TIMEOUT,
+                    metadata=(('test', 'ExpiredStreamRequestStreamResponse'),))
+                next(response_iterator)
+
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED,
+                      exception_context.exception.code())
+        self.assertIs(grpc.StatusCode.DEADLINE_EXCEEDED,
+                      response_iterator.code())
+
+    def testFailedUnaryRequestBlockingUnaryResponse(self):
+        request = b'\x37\x17'
+
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        with self._control.fail():
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                multi_callable.with_call(
+                    request,
+                    metadata=(
+                        ('test', 'FailedUnaryRequestBlockingUnaryResponse'),))
+
+        self.assertIs(grpc.StatusCode.UNKNOWN,
+                      exception_context.exception.code())
+
+    def testFailedUnaryRequestFutureUnaryResponse(self):
+        request = b'\x37\x17'
+        callback = _Callback()
+
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        with self._control.fail():
+            response_future = multi_callable.future(
+                request,
+                metadata=(('test', 'FailedUnaryRequestFutureUnaryResponse'),))
+            response_future.add_done_callback(callback)
+            value_passed_to_callback = callback.value()
+
+        self.assertIsInstance(response_future, grpc.Future)
+        self.assertIsInstance(response_future, grpc.Call)
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            response_future.result()
+        self.assertIs(grpc.StatusCode.UNKNOWN,
+                      exception_context.exception.code())
+        self.assertIsInstance(response_future.exception(), grpc.RpcError)
+        self.assertIsNotNone(response_future.traceback())
+        self.assertIs(grpc.StatusCode.UNKNOWN,
+                      response_future.exception().code())
+        self.assertIs(response_future, value_passed_to_callback)
+
+    def testFailedUnaryRequestStreamResponse(self):
+        request = b'\x37\x17'
+
+        multi_callable = _unary_stream_multi_callable(self._channel)
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            with self._control.fail():
+                response_iterator = multi_callable(
+                    request,
+                    metadata=(('test', 'FailedUnaryRequestStreamResponse'),))
+                next(response_iterator)
+
+        self.assertIs(grpc.StatusCode.UNKNOWN,
+                      exception_context.exception.code())
+
+    def testFailedStreamRequestBlockingUnaryResponse(self):
+        requests = tuple(b'\x47\x58'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
+
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        with self._control.fail():
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                multi_callable(
+                    request_iterator,
+                    metadata=(
+                        ('test', 'FailedStreamRequestBlockingUnaryResponse'),))
+
+        self.assertIs(grpc.StatusCode.UNKNOWN,
+                      exception_context.exception.code())
+
+    def testFailedStreamRequestFutureUnaryResponse(self):
+        requests = tuple(b'\x07\x18'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
+        callback = _Callback()
+
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        with self._control.fail():
+            response_future = multi_callable.future(
+                request_iterator,
+                metadata=(('test', 'FailedStreamRequestFutureUnaryResponse'),))
+            response_future.add_done_callback(callback)
+            value_passed_to_callback = callback.value()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            response_future.result()
+        self.assertIs(grpc.StatusCode.UNKNOWN, response_future.code())
+        self.assertIs(grpc.StatusCode.UNKNOWN,
+                      exception_context.exception.code())
+        self.assertIsInstance(response_future.exception(), grpc.RpcError)
+        self.assertIsNotNone(response_future.traceback())
+        self.assertIs(response_future, value_passed_to_callback)
+
+    def testFailedStreamRequestStreamResponse(self):
+        requests = tuple(b'\x67\x88'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
+
+        multi_callable = _stream_stream_multi_callable(self._channel)
+        with self._control.fail():
+            with self.assertRaises(grpc.RpcError) as exception_context:
+                response_iterator = multi_callable(
+                    request_iterator,
+                    metadata=(('test', 'FailedStreamRequestStreamResponse'),))
+                tuple(response_iterator)
+
+        self.assertIs(grpc.StatusCode.UNKNOWN,
+                      exception_context.exception.code())
+        self.assertIs(grpc.StatusCode.UNKNOWN, response_iterator.code())
+
+    def testIgnoredUnaryRequestFutureUnaryResponse(self):
+        request = b'\x37\x17'
+
+        multi_callable = _unary_unary_multi_callable(self._channel)
+        multi_callable.future(
+            request,
+            metadata=(('test', 'IgnoredUnaryRequestFutureUnaryResponse'),))
 
-    multi_callable = _unary_stream_multi_callable(self._channel)
-    multi_callable(
-        request,
-        metadata=(('test', 'IgnoredUnaryRequestStreamResponse'),))
+    def testIgnoredUnaryRequestStreamResponse(self):
+        request = b'\x37\x17'
 
-  def testIgnoredStreamRequestFutureUnaryResponse(self):
-    requests = tuple(b'\x07\x18' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
+        multi_callable = _unary_stream_multi_callable(self._channel)
+        multi_callable(
+            request, metadata=(('test', 'IgnoredUnaryRequestStreamResponse'),))
+
+    def testIgnoredStreamRequestFutureUnaryResponse(self):
+        requests = tuple(b'\x07\x18'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
 
-    multi_callable = _stream_unary_multi_callable(self._channel)
-    multi_callable.future(
-        request_iterator,
-        metadata=(('test', 'IgnoredStreamRequestFutureUnaryResponse'),))
+        multi_callable = _stream_unary_multi_callable(self._channel)
+        multi_callable.future(
+            request_iterator,
+            metadata=(('test', 'IgnoredStreamRequestFutureUnaryResponse'),))
 
-  def testIgnoredStreamRequestStreamResponse(self):
-    requests = tuple(b'\x67\x88' for _ in range(test_constants.STREAM_LENGTH))
-    request_iterator = iter(requests)
+    def testIgnoredStreamRequestStreamResponse(self):
+        requests = tuple(b'\x67\x88'
+                         for _ in range(test_constants.STREAM_LENGTH))
+        request_iterator = iter(requests)
 
-    multi_callable = _stream_stream_multi_callable(self._channel)
-    multi_callable(
-        request_iterator,
-        metadata=(('test', 'IgnoredStreamRequestStreamResponse'),))
+        multi_callable = _stream_stream_multi_callable(self._channel)
+        multi_callable(
+            request_iterator,
+            metadata=(('test', 'IgnoredStreamRequestStreamResponse'),))
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_sanity/__init__.py b/src/python/grpcio_tests/tests/unit/_sanity/__init__.py
index 2f88fa04122d292e57bd1fa0da8d2a65dad35f61..100a624dc9c1bbd89708c58e18cf2666a73f4cc7 100644
--- a/src/python/grpcio_tests/tests/unit/_sanity/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/_sanity/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/unit/_sanity/_sanity_test.py b/src/python/grpcio_tests/tests/unit/_sanity/_sanity_test.py
index e9fdf217aef02f6eac1b9234b6ab8df91b02ecf6..0fbe6a2b5d020b51cfa7704f7e25ec31364f3fef 100644
--- a/src/python/grpcio_tests/tests/unit/_sanity/_sanity_test.py
+++ b/src/python/grpcio_tests/tests/unit/_sanity/_sanity_test.py
@@ -38,21 +38,23 @@ import tests
 
 class Sanity(unittest.TestCase):
 
-  def testTestsJsonUpToDate(self):
-    """Autodiscovers all test suites and checks that tests.json is up to date"""
-    loader = tests.Loader()
-    loader.loadTestsFromNames(['tests'])
-    test_suite_names = [
-        test_case_class.id().rsplit('.', 1)[0]
-        for test_case_class in tests._loader.iterate_suite_cases(loader.suite)]
-    test_suite_names = sorted(set(test_suite_names))
-
-    tests_json_string = pkg_resources.resource_string('tests', 'tests.json')
-    if six.PY3:
-      tests_json_string = tests_json_string.decode()
-    tests_json = json.loads(tests_json_string)
-    self.assertListEqual(test_suite_names, tests_json)
+    def testTestsJsonUpToDate(self):
+        """Autodiscovers all test suites and checks that tests.json is up to date"""
+        loader = tests.Loader()
+        loader.loadTestsFromNames(['tests'])
+        test_suite_names = [
+            test_case_class.id().rsplit('.', 1)[0]
+            for test_case_class in tests._loader.iterate_suite_cases(
+                loader.suite)
+        ]
+        test_suite_names = sorted(set(test_suite_names))
+
+        tests_json_string = pkg_resources.resource_string('tests', 'tests.json')
+        if six.PY3:
+            tests_json_string = tests_json_string.decode()
+        tests_json = json.loads(tests_json_string)
+        self.assertListEqual(test_suite_names, tests_json)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_thread_cleanup_test.py b/src/python/grpcio_tests/tests/unit/_thread_cleanup_test.py
index 3e4f317edcddbd4d409eb9f97476b2f0875afba0..be3522f46f273e07f901a4b55efb98f26dbc630a 100644
--- a/src/python/grpcio_tests/tests/unit/_thread_cleanup_test.py
+++ b/src/python/grpcio_tests/tests/unit/_thread_cleanup_test.py
@@ -40,78 +40,89 @@ _EPSILON = 0.1
 
 
 def cleanup(timeout):
-  if timeout is not None:
-    time.sleep(timeout)
-  else:
-    time.sleep(_LONG_TIME)
+    if timeout is not None:
+        time.sleep(timeout)
+    else:
+        time.sleep(_LONG_TIME)
 
 
 def slow_cleanup(timeout):
-  # Don't respect timeout
-  time.sleep(_LONG_TIME)
+    # Don't respect timeout
+    time.sleep(_LONG_TIME)
 
 
 class CleanupThreadTest(unittest.TestCase):
 
-  def testTargetInvocation(self):
-    event = threading.Event()
-    def target(arg1, arg2, arg3=None):
-      self.assertEqual('arg1', arg1)
-      self.assertEqual('arg2', arg2)
-      self.assertEqual('arg3', arg3)
-      event.set()
-
-    cleanup_thread = _common.CleanupThread(behavior=lambda x: None,
-                              target=target, name='test-name',
-                              args=('arg1', 'arg2'), kwargs={'arg3': 'arg3'})
-    cleanup_thread.start()
-    cleanup_thread.join()
-    self.assertEqual(cleanup_thread.name, 'test-name')
-    self.assertTrue(event.is_set())
-
-  def testJoinNoTimeout(self):
-    cleanup_thread = _common.CleanupThread(behavior=cleanup)
-    cleanup_thread.start()
-    start_time = time.time()
-    cleanup_thread.join()
-    end_time = time.time()
-    self.assertAlmostEqual(_LONG_TIME, end_time - start_time, delta=_EPSILON)
-
-  def testJoinTimeout(self):
-    cleanup_thread = _common.CleanupThread(behavior=cleanup)
-    cleanup_thread.start()
-    start_time = time.time()
-    cleanup_thread.join(_SHORT_TIME)
-    end_time = time.time()
-    self.assertAlmostEqual(_SHORT_TIME, end_time - start_time, delta=_EPSILON)
-
-  def testJoinTimeoutSlowBehavior(self):
-    cleanup_thread = _common.CleanupThread(behavior=slow_cleanup)
-    cleanup_thread.start()
-    start_time = time.time()
-    cleanup_thread.join(_SHORT_TIME)
-    end_time = time.time()
-    self.assertAlmostEqual(_LONG_TIME, end_time - start_time, delta=_EPSILON)
-
-  def testJoinTimeoutSlowTarget(self):
-    event = threading.Event()
-    def target():
-      event.wait(_LONG_TIME)
-    cleanup_thread = _common.CleanupThread(behavior=cleanup, target=target)
-    cleanup_thread.start()
-    start_time = time.time()
-    cleanup_thread.join(_SHORT_TIME)
-    end_time = time.time()
-    self.assertAlmostEqual(_SHORT_TIME, end_time - start_time, delta=_EPSILON)
-    event.set()
-
-  def testJoinZeroTimeout(self):
-    cleanup_thread = _common.CleanupThread(behavior=cleanup)
-    cleanup_thread.start()
-    start_time = time.time()
-    cleanup_thread.join(0)
-    end_time = time.time()
-    self.assertAlmostEqual(0, end_time - start_time, delta=_EPSILON)
+    def testTargetInvocation(self):
+        event = threading.Event()
+
+        def target(arg1, arg2, arg3=None):
+            self.assertEqual('arg1', arg1)
+            self.assertEqual('arg2', arg2)
+            self.assertEqual('arg3', arg3)
+            event.set()
+
+        cleanup_thread = _common.CleanupThread(
+            behavior=lambda x: None,
+            target=target,
+            name='test-name',
+            args=('arg1', 'arg2'),
+            kwargs={'arg3': 'arg3'})
+        cleanup_thread.start()
+        cleanup_thread.join()
+        self.assertEqual(cleanup_thread.name, 'test-name')
+        self.assertTrue(event.is_set())
+
+    def testJoinNoTimeout(self):
+        cleanup_thread = _common.CleanupThread(behavior=cleanup)
+        cleanup_thread.start()
+        start_time = time.time()
+        cleanup_thread.join()
+        end_time = time.time()
+        self.assertAlmostEqual(
+            _LONG_TIME, end_time - start_time, delta=_EPSILON)
+
+    def testJoinTimeout(self):
+        cleanup_thread = _common.CleanupThread(behavior=cleanup)
+        cleanup_thread.start()
+        start_time = time.time()
+        cleanup_thread.join(_SHORT_TIME)
+        end_time = time.time()
+        self.assertAlmostEqual(
+            _SHORT_TIME, end_time - start_time, delta=_EPSILON)
+
+    def testJoinTimeoutSlowBehavior(self):
+        cleanup_thread = _common.CleanupThread(behavior=slow_cleanup)
+        cleanup_thread.start()
+        start_time = time.time()
+        cleanup_thread.join(_SHORT_TIME)
+        end_time = time.time()
+        self.assertAlmostEqual(
+            _LONG_TIME, end_time - start_time, delta=_EPSILON)
+
+    def testJoinTimeoutSlowTarget(self):
+        event = threading.Event()
+
+        def target():
+            event.wait(_LONG_TIME)
+
+        cleanup_thread = _common.CleanupThread(behavior=cleanup, target=target)
+        cleanup_thread.start()
+        start_time = time.time()
+        cleanup_thread.join(_SHORT_TIME)
+        end_time = time.time()
+        self.assertAlmostEqual(
+            _SHORT_TIME, end_time - start_time, delta=_EPSILON)
+        event.set()
+
+    def testJoinZeroTimeout(self):
+        cleanup_thread = _common.CleanupThread(behavior=cleanup)
+        cleanup_thread.start()
+        start_time = time.time()
+        cleanup_thread.join(0)
+        end_time = time.time()
+        self.assertAlmostEqual(0, end_time - start_time, delta=_EPSILON)
+
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_thread_pool.py b/src/python/grpcio_tests/tests/unit/_thread_pool.py
index f13cc2f86fc6072141e9632b8e7ea86584829be0..fad2e1c8f6d118cd9588d6c8570f7e7c0c7912c4 100644
--- a/src/python/grpcio_tests/tests/unit/_thread_pool.py
+++ b/src/python/grpcio_tests/tests/unit/_thread_pool.py
@@ -32,17 +32,18 @@ from concurrent import futures
 
 
 class RecordingThreadPool(futures.Executor):
-  """A thread pool that records if used."""
-  def __init__(self, max_workers):
-    self._tp_executor = futures.ThreadPoolExecutor(max_workers=max_workers)
-    self._lock = threading.Lock()
-    self._was_used = False
+    """A thread pool that records if used."""
 
-  def submit(self, fn, *args, **kwargs):
-    with self._lock:
-      self._was_used = True
-    self._tp_executor.submit(fn, *args, **kwargs)
+    def __init__(self, max_workers):
+        self._tp_executor = futures.ThreadPoolExecutor(max_workers=max_workers)
+        self._lock = threading.Lock()
+        self._was_used = False
 
-  def was_used(self):
-    with self._lock:
-      return self._was_used
+    def submit(self, fn, *args, **kwargs):
+        with self._lock:
+            self._was_used = True
+        self._tp_executor.submit(fn, *args, **kwargs)
+
+    def was_used(self):
+        with self._lock:
+            return self._was_used
diff --git a/src/python/grpcio_tests/tests/unit/beta/__init__.py b/src/python/grpcio_tests/tests/unit/beta/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/unit/beta/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/beta/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/unit/beta/_beta_features_test.py b/src/python/grpcio_tests/tests/unit/beta/_beta_features_test.py
index 3a9701b8ebea51d0f92d74f172d511784812dcdf..b5fdac26c11db3cb958cce0471f3db9850d8a6b5 100644
--- a/src/python/grpcio_tests/tests/unit/beta/_beta_features_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_beta_features_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests Face interface compliance of the gRPC Python Beta API."""
 
 import threading
@@ -57,290 +56,303 @@ _RESPONSE = b'123'
 
 class _Servicer(object):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._peer = None
-    self._serviced = False
-
-  def unary_unary(self, request, context):
-    with self._condition:
-      self._request = request
-      self._peer = context.protocol_context().peer()
-      self._invocation_metadata = context.invocation_metadata()
-      context.protocol_context().disable_next_response_compression()
-      self._serviced = True
-      self._condition.notify_all()
-      return _RESPONSE
-
-  def unary_stream(self, request, context):
-    with self._condition:
-      self._request = request
-      self._peer = context.protocol_context().peer()
-      self._invocation_metadata = context.invocation_metadata()
-      context.protocol_context().disable_next_response_compression()
-      self._serviced = True
-      self._condition.notify_all()
-      return
-      yield
-
-  def stream_unary(self, request_iterator, context):
-    for request in request_iterator:
-      self._request = request
-    with self._condition:
-      self._peer = context.protocol_context().peer()
-      self._invocation_metadata = context.invocation_metadata()
-      context.protocol_context().disable_next_response_compression()
-      self._serviced = True
-      self._condition.notify_all()
-      return _RESPONSE
-
-  def stream_stream(self, request_iterator, context):
-    for request in request_iterator:
-      with self._condition:
-        self._peer = context.protocol_context().peer()
-        context.protocol_context().disable_next_response_compression()
-        yield _RESPONSE
-    with self._condition:
-      self._invocation_metadata = context.invocation_metadata()
-      self._serviced = True
-      self._condition.notify_all()
-
-  def peer(self):
-    with self._condition:
-      return self._peer
-
-  def block_until_serviced(self):
-    with self._condition:
-      while not self._serviced:
-        self._condition.wait()
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._peer = None
+        self._serviced = False
+
+    def unary_unary(self, request, context):
+        with self._condition:
+            self._request = request
+            self._peer = context.protocol_context().peer()
+            self._invocation_metadata = context.invocation_metadata()
+            context.protocol_context().disable_next_response_compression()
+            self._serviced = True
+            self._condition.notify_all()
+            return _RESPONSE
+
+    def unary_stream(self, request, context):
+        with self._condition:
+            self._request = request
+            self._peer = context.protocol_context().peer()
+            self._invocation_metadata = context.invocation_metadata()
+            context.protocol_context().disable_next_response_compression()
+            self._serviced = True
+            self._condition.notify_all()
+            return
+            yield
+
+    def stream_unary(self, request_iterator, context):
+        for request in request_iterator:
+            self._request = request
+        with self._condition:
+            self._peer = context.protocol_context().peer()
+            self._invocation_metadata = context.invocation_metadata()
+            context.protocol_context().disable_next_response_compression()
+            self._serviced = True
+            self._condition.notify_all()
+            return _RESPONSE
+
+    def stream_stream(self, request_iterator, context):
+        for request in request_iterator:
+            with self._condition:
+                self._peer = context.protocol_context().peer()
+                context.protocol_context().disable_next_response_compression()
+                yield _RESPONSE
+        with self._condition:
+            self._invocation_metadata = context.invocation_metadata()
+            self._serviced = True
+            self._condition.notify_all()
+
+    def peer(self):
+        with self._condition:
+            return self._peer
+
+    def block_until_serviced(self):
+        with self._condition:
+            while not self._serviced:
+                self._condition.wait()
 
 
 class _BlockingIterator(object):
 
-  def __init__(self, upstream):
-    self._condition = threading.Condition()
-    self._upstream = upstream
-    self._allowed = []
+    def __init__(self, upstream):
+        self._condition = threading.Condition()
+        self._upstream = upstream
+        self._allowed = []
 
-  def __iter__(self):
-    return self
+    def __iter__(self):
+        return self
 
-  def __next__(self):
-    return self.next()
+    def __next__(self):
+        return self.next()
 
-  def next(self):
-    with self._condition:
-      while True:
-        if self._allowed is None:
-          raise StopIteration()
-        elif self._allowed:
-          return self._allowed.pop(0)
-        else:
-          self._condition.wait()
+    def next(self):
+        with self._condition:
+            while True:
+                if self._allowed is None:
+                    raise StopIteration()
+                elif self._allowed:
+                    return self._allowed.pop(0)
+                else:
+                    self._condition.wait()
 
-  def allow(self):
-    with self._condition:
-      try:
-        self._allowed.append(next(self._upstream))
-      except StopIteration:
-        self._allowed = None
-      self._condition.notify_all()
+    def allow(self):
+        with self._condition:
+            try:
+                self._allowed.append(next(self._upstream))
+            except StopIteration:
+                self._allowed = None
+            self._condition.notify_all()
 
 
 def _metadata_plugin(context, callback):
-  callback([(_PER_RPC_CREDENTIALS_METADATA_KEY,
-             _PER_RPC_CREDENTIALS_METADATA_VALUE)], None)
+    callback([(_PER_RPC_CREDENTIALS_METADATA_KEY,
+               _PER_RPC_CREDENTIALS_METADATA_VALUE)], None)
 
 
 class BetaFeaturesTest(unittest.TestCase):
 
-  def setUp(self):
-    self._servicer = _Servicer()
-    method_implementations = {
-        (_GROUP, _UNARY_UNARY):
+    def setUp(self):
+        self._servicer = _Servicer()
+        method_implementations = {
+            (_GROUP, _UNARY_UNARY):
             utilities.unary_unary_inline(self._servicer.unary_unary),
-        (_GROUP, _UNARY_STREAM):
+            (_GROUP, _UNARY_STREAM):
             utilities.unary_stream_inline(self._servicer.unary_stream),
-        (_GROUP, _STREAM_UNARY):
+            (_GROUP, _STREAM_UNARY):
             utilities.stream_unary_inline(self._servicer.stream_unary),
-        (_GROUP, _STREAM_STREAM):
+            (_GROUP, _STREAM_STREAM):
             utilities.stream_stream_inline(self._servicer.stream_stream),
-    }
-
-    cardinalities = {
-        _UNARY_UNARY: cardinality.Cardinality.UNARY_UNARY,
-        _UNARY_STREAM: cardinality.Cardinality.UNARY_STREAM,
-        _STREAM_UNARY: cardinality.Cardinality.STREAM_UNARY,
-        _STREAM_STREAM: cardinality.Cardinality.STREAM_STREAM,
-    }
-
-    server_options = implementations.server_options(
-        thread_pool_size=test_constants.POOL_SIZE)
-    self._server = implementations.server(
-        method_implementations, options=server_options)
-    server_credentials = implementations.ssl_server_credentials(
-        [(resources.private_key(), resources.certificate_chain(),),])
-    port = self._server.add_secure_port('[::]:0', server_credentials)
-    self._server.start()
-    self._channel_credentials = implementations.ssl_channel_credentials(
-        resources.test_root_certificates())
-    self._call_credentials = implementations.metadata_call_credentials(
-        _metadata_plugin)
-    channel = test_utilities.not_really_secure_channel(
-        'localhost', port, self._channel_credentials, _SERVER_HOST_OVERRIDE)
-    stub_options = implementations.stub_options(
-        thread_pool_size=test_constants.POOL_SIZE)
-    self._dynamic_stub = implementations.dynamic_stub(
-        channel, _GROUP, cardinalities, options=stub_options)
-
-  def tearDown(self):
-    self._dynamic_stub = None
-    self._server.stop(test_constants.SHORT_TIMEOUT).wait()
-
-  def test_unary_unary(self):
-    call_options = interfaces.grpc_call_options(
-        disable_compression=True, credentials=self._call_credentials)
-    response = getattr(self._dynamic_stub, _UNARY_UNARY)(
-        _REQUEST, test_constants.LONG_TIMEOUT, protocol_options=call_options)
-    self.assertEqual(_RESPONSE, response)
-    self.assertIsNotNone(self._servicer.peer())
-    invocation_metadata = [(metadatum.key, metadatum.value) for metadatum in
-                           self._servicer._invocation_metadata]
-    self.assertIn(
-        (_PER_RPC_CREDENTIALS_METADATA_KEY,
-         _PER_RPC_CREDENTIALS_METADATA_VALUE),
-        invocation_metadata)
-
-  def test_unary_stream(self):
-    call_options = interfaces.grpc_call_options(
-        disable_compression=True, credentials=self._call_credentials)
-    response_iterator = getattr(self._dynamic_stub, _UNARY_STREAM)(
-        _REQUEST, test_constants.LONG_TIMEOUT, protocol_options=call_options)
-    self._servicer.block_until_serviced()
-    self.assertIsNotNone(self._servicer.peer())
-    invocation_metadata = [(metadatum.key, metadatum.value) for metadatum in
-                           self._servicer._invocation_metadata]
-    self.assertIn(
-        (_PER_RPC_CREDENTIALS_METADATA_KEY,
-         _PER_RPC_CREDENTIALS_METADATA_VALUE),
-        invocation_metadata)
-
-  def test_stream_unary(self):
-    call_options = interfaces.grpc_call_options(
-        credentials=self._call_credentials)
-    request_iterator = _BlockingIterator(iter((_REQUEST,)))
-    response_future = getattr(self._dynamic_stub, _STREAM_UNARY).future(
-        request_iterator, test_constants.LONG_TIMEOUT,
-        protocol_options=call_options)
-    response_future.protocol_context().disable_next_request_compression()
-    request_iterator.allow()
-    response_future.protocol_context().disable_next_request_compression()
-    request_iterator.allow()
-    self._servicer.block_until_serviced()
-    self.assertIsNotNone(self._servicer.peer())
-    self.assertEqual(_RESPONSE, response_future.result())
-    invocation_metadata = [(metadatum.key, metadatum.value) for metadatum in
-                           self._servicer._invocation_metadata]
-    self.assertIn(
-        (_PER_RPC_CREDENTIALS_METADATA_KEY,
-         _PER_RPC_CREDENTIALS_METADATA_VALUE),
-        invocation_metadata)
-
-  def test_stream_stream(self):
-    call_options = interfaces.grpc_call_options(
-        credentials=self._call_credentials)
-    request_iterator = _BlockingIterator(iter((_REQUEST,)))
-    response_iterator = getattr(self._dynamic_stub, _STREAM_STREAM)(
-        request_iterator, test_constants.SHORT_TIMEOUT,
-        protocol_options=call_options)
-    response_iterator.protocol_context().disable_next_request_compression()
-    request_iterator.allow()
-    response = next(response_iterator)
-    response_iterator.protocol_context().disable_next_request_compression()
-    request_iterator.allow()
-    self._servicer.block_until_serviced()
-    self.assertIsNotNone(self._servicer.peer())
-    self.assertEqual(_RESPONSE, response)
-    invocation_metadata = [(metadatum.key, metadatum.value) for metadatum in
-                           self._servicer._invocation_metadata]
-    self.assertIn(
-        (_PER_RPC_CREDENTIALS_METADATA_KEY,
-         _PER_RPC_CREDENTIALS_METADATA_VALUE),
-        invocation_metadata)
+        }
+
+        cardinalities = {
+            _UNARY_UNARY: cardinality.Cardinality.UNARY_UNARY,
+            _UNARY_STREAM: cardinality.Cardinality.UNARY_STREAM,
+            _STREAM_UNARY: cardinality.Cardinality.STREAM_UNARY,
+            _STREAM_STREAM: cardinality.Cardinality.STREAM_STREAM,
+        }
+
+        server_options = implementations.server_options(
+            thread_pool_size=test_constants.POOL_SIZE)
+        self._server = implementations.server(
+            method_implementations, options=server_options)
+        server_credentials = implementations.ssl_server_credentials([(
+            resources.private_key(),
+            resources.certificate_chain(),),])
+        port = self._server.add_secure_port('[::]:0', server_credentials)
+        self._server.start()
+        self._channel_credentials = implementations.ssl_channel_credentials(
+            resources.test_root_certificates())
+        self._call_credentials = implementations.metadata_call_credentials(
+            _metadata_plugin)
+        channel = test_utilities.not_really_secure_channel(
+            'localhost', port, self._channel_credentials, _SERVER_HOST_OVERRIDE)
+        stub_options = implementations.stub_options(
+            thread_pool_size=test_constants.POOL_SIZE)
+        self._dynamic_stub = implementations.dynamic_stub(
+            channel, _GROUP, cardinalities, options=stub_options)
+
+    def tearDown(self):
+        self._dynamic_stub = None
+        self._server.stop(test_constants.SHORT_TIMEOUT).wait()
+
+    def test_unary_unary(self):
+        call_options = interfaces.grpc_call_options(
+            disable_compression=True, credentials=self._call_credentials)
+        response = getattr(self._dynamic_stub, _UNARY_UNARY)(
+            _REQUEST,
+            test_constants.LONG_TIMEOUT,
+            protocol_options=call_options)
+        self.assertEqual(_RESPONSE, response)
+        self.assertIsNotNone(self._servicer.peer())
+        invocation_metadata = [
+            (metadatum.key, metadatum.value)
+            for metadatum in self._servicer._invocation_metadata
+        ]
+        self.assertIn((_PER_RPC_CREDENTIALS_METADATA_KEY,
+                       _PER_RPC_CREDENTIALS_METADATA_VALUE),
+                      invocation_metadata)
+
+    def test_unary_stream(self):
+        call_options = interfaces.grpc_call_options(
+            disable_compression=True, credentials=self._call_credentials)
+        response_iterator = getattr(self._dynamic_stub, _UNARY_STREAM)(
+            _REQUEST,
+            test_constants.LONG_TIMEOUT,
+            protocol_options=call_options)
+        self._servicer.block_until_serviced()
+        self.assertIsNotNone(self._servicer.peer())
+        invocation_metadata = [
+            (metadatum.key, metadatum.value)
+            for metadatum in self._servicer._invocation_metadata
+        ]
+        self.assertIn((_PER_RPC_CREDENTIALS_METADATA_KEY,
+                       _PER_RPC_CREDENTIALS_METADATA_VALUE),
+                      invocation_metadata)
+
+    def test_stream_unary(self):
+        call_options = interfaces.grpc_call_options(
+            credentials=self._call_credentials)
+        request_iterator = _BlockingIterator(iter((_REQUEST,)))
+        response_future = getattr(self._dynamic_stub, _STREAM_UNARY).future(
+            request_iterator,
+            test_constants.LONG_TIMEOUT,
+            protocol_options=call_options)
+        response_future.protocol_context().disable_next_request_compression()
+        request_iterator.allow()
+        response_future.protocol_context().disable_next_request_compression()
+        request_iterator.allow()
+        self._servicer.block_until_serviced()
+        self.assertIsNotNone(self._servicer.peer())
+        self.assertEqual(_RESPONSE, response_future.result())
+        invocation_metadata = [
+            (metadatum.key, metadatum.value)
+            for metadatum in self._servicer._invocation_metadata
+        ]
+        self.assertIn((_PER_RPC_CREDENTIALS_METADATA_KEY,
+                       _PER_RPC_CREDENTIALS_METADATA_VALUE),
+                      invocation_metadata)
+
+    def test_stream_stream(self):
+        call_options = interfaces.grpc_call_options(
+            credentials=self._call_credentials)
+        request_iterator = _BlockingIterator(iter((_REQUEST,)))
+        response_iterator = getattr(self._dynamic_stub, _STREAM_STREAM)(
+            request_iterator,
+            test_constants.SHORT_TIMEOUT,
+            protocol_options=call_options)
+        response_iterator.protocol_context().disable_next_request_compression()
+        request_iterator.allow()
+        response = next(response_iterator)
+        response_iterator.protocol_context().disable_next_request_compression()
+        request_iterator.allow()
+        self._servicer.block_until_serviced()
+        self.assertIsNotNone(self._servicer.peer())
+        self.assertEqual(_RESPONSE, response)
+        invocation_metadata = [
+            (metadatum.key, metadatum.value)
+            for metadatum in self._servicer._invocation_metadata
+        ]
+        self.assertIn((_PER_RPC_CREDENTIALS_METADATA_KEY,
+                       _PER_RPC_CREDENTIALS_METADATA_VALUE),
+                      invocation_metadata)
 
 
 class ContextManagementAndLifecycleTest(unittest.TestCase):
 
-  def setUp(self):
-    self._servicer = _Servicer()
-    self._method_implementations = {
-        (_GROUP, _UNARY_UNARY):
+    def setUp(self):
+        self._servicer = _Servicer()
+        self._method_implementations = {
+            (_GROUP, _UNARY_UNARY):
             utilities.unary_unary_inline(self._servicer.unary_unary),
-        (_GROUP, _UNARY_STREAM):
+            (_GROUP, _UNARY_STREAM):
             utilities.unary_stream_inline(self._servicer.unary_stream),
-        (_GROUP, _STREAM_UNARY):
+            (_GROUP, _STREAM_UNARY):
             utilities.stream_unary_inline(self._servicer.stream_unary),
-        (_GROUP, _STREAM_STREAM):
+            (_GROUP, _STREAM_STREAM):
             utilities.stream_stream_inline(self._servicer.stream_stream),
-    }
-
-    self._cardinalities = {
-        _UNARY_UNARY: cardinality.Cardinality.UNARY_UNARY,
-        _UNARY_STREAM: cardinality.Cardinality.UNARY_STREAM,
-        _STREAM_UNARY: cardinality.Cardinality.STREAM_UNARY,
-        _STREAM_STREAM: cardinality.Cardinality.STREAM_STREAM,
-    }
-
-    self._server_options = implementations.server_options(
-        thread_pool_size=test_constants.POOL_SIZE)
-    self._server_credentials = implementations.ssl_server_credentials(
-        [(resources.private_key(), resources.certificate_chain(),),])
-    self._channel_credentials = implementations.ssl_channel_credentials(
-        resources.test_root_certificates())
-    self._stub_options = implementations.stub_options(
-        thread_pool_size=test_constants.POOL_SIZE)
-
-  def test_stub_context(self):
-    server = implementations.server(
-        self._method_implementations, options=self._server_options)
-    port = server.add_secure_port('[::]:0', self._server_credentials)
-    server.start()
-
-    channel = test_utilities.not_really_secure_channel(
-        'localhost', port, self._channel_credentials, _SERVER_HOST_OVERRIDE)
-    dynamic_stub = implementations.dynamic_stub(
-        channel, _GROUP, self._cardinalities, options=self._stub_options)
-    for _ in range(100):
-      with dynamic_stub:
-        pass
-    for _ in range(10):
-      with dynamic_stub:
-        call_options = interfaces.grpc_call_options(
-            disable_compression=True)
-        response = getattr(dynamic_stub, _UNARY_UNARY)(
-            _REQUEST, test_constants.LONG_TIMEOUT,
-            protocol_options=call_options)
-        self.assertEqual(_RESPONSE, response)
-        self.assertIsNotNone(self._servicer.peer())
-
-    server.stop(test_constants.SHORT_TIMEOUT).wait()
-
-  def test_server_lifecycle(self):
-    for _ in range(100):
-      server = implementations.server(
-          self._method_implementations, options=self._server_options)
-      port = server.add_secure_port('[::]:0', self._server_credentials)
-      server.start()
-      server.stop(test_constants.SHORT_TIMEOUT).wait()
-    for _ in range(100):
-      server = implementations.server(
-          self._method_implementations, options=self._server_options)
-      server.add_secure_port('[::]:0', self._server_credentials)
-      server.add_insecure_port('[::]:0')
-      with server:
-        server.stop(test_constants.SHORT_TIMEOUT)
-      server.stop(test_constants.SHORT_TIMEOUT)
+        }
+
+        self._cardinalities = {
+            _UNARY_UNARY: cardinality.Cardinality.UNARY_UNARY,
+            _UNARY_STREAM: cardinality.Cardinality.UNARY_STREAM,
+            _STREAM_UNARY: cardinality.Cardinality.STREAM_UNARY,
+            _STREAM_STREAM: cardinality.Cardinality.STREAM_STREAM,
+        }
+
+        self._server_options = implementations.server_options(
+            thread_pool_size=test_constants.POOL_SIZE)
+        self._server_credentials = implementations.ssl_server_credentials([(
+            resources.private_key(),
+            resources.certificate_chain(),),])
+        self._channel_credentials = implementations.ssl_channel_credentials(
+            resources.test_root_certificates())
+        self._stub_options = implementations.stub_options(
+            thread_pool_size=test_constants.POOL_SIZE)
+
+    def test_stub_context(self):
+        server = implementations.server(
+            self._method_implementations, options=self._server_options)
+        port = server.add_secure_port('[::]:0', self._server_credentials)
+        server.start()
+
+        channel = test_utilities.not_really_secure_channel(
+            'localhost', port, self._channel_credentials, _SERVER_HOST_OVERRIDE)
+        dynamic_stub = implementations.dynamic_stub(
+            channel, _GROUP, self._cardinalities, options=self._stub_options)
+        for _ in range(100):
+            with dynamic_stub:
+                pass
+        for _ in range(10):
+            with dynamic_stub:
+                call_options = interfaces.grpc_call_options(
+                    disable_compression=True)
+                response = getattr(dynamic_stub, _UNARY_UNARY)(
+                    _REQUEST,
+                    test_constants.LONG_TIMEOUT,
+                    protocol_options=call_options)
+                self.assertEqual(_RESPONSE, response)
+                self.assertIsNotNone(self._servicer.peer())
+
+        server.stop(test_constants.SHORT_TIMEOUT).wait()
+
+    def test_server_lifecycle(self):
+        for _ in range(100):
+            server = implementations.server(
+                self._method_implementations, options=self._server_options)
+            port = server.add_secure_port('[::]:0', self._server_credentials)
+            server.start()
+            server.stop(test_constants.SHORT_TIMEOUT).wait()
+        for _ in range(100):
+            server = implementations.server(
+                self._method_implementations, options=self._server_options)
+            server.add_secure_port('[::]:0', self._server_credentials)
+            server.add_insecure_port('[::]:0')
+            with server:
+                server.stop(test_constants.SHORT_TIMEOUT)
+            server.stop(test_constants.SHORT_TIMEOUT)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/beta/_connectivity_channel_test.py b/src/python/grpcio_tests/tests/unit/beta/_connectivity_channel_test.py
index 5d826a269db073cf7241b3ecf1a41b1157524821..49d683b8a6cb411b5aca88e98b2114061ed16df5 100644
--- a/src/python/grpcio_tests/tests/unit/beta/_connectivity_channel_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_connectivity_channel_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of grpc.beta._connectivity_channel."""
 
 import unittest
@@ -36,13 +35,13 @@ from grpc.beta import interfaces
 
 class ConnectivityStatesTest(unittest.TestCase):
 
-  def testBetaConnectivityStates(self):
-    self.assertIsNotNone(interfaces.ChannelConnectivity.IDLE)
-    self.assertIsNotNone(interfaces.ChannelConnectivity.CONNECTING)
-    self.assertIsNotNone(interfaces.ChannelConnectivity.READY)
-    self.assertIsNotNone(interfaces.ChannelConnectivity.TRANSIENT_FAILURE)
-    self.assertIsNotNone(interfaces.ChannelConnectivity.FATAL_FAILURE)
+    def testBetaConnectivityStates(self):
+        self.assertIsNotNone(interfaces.ChannelConnectivity.IDLE)
+        self.assertIsNotNone(interfaces.ChannelConnectivity.CONNECTING)
+        self.assertIsNotNone(interfaces.ChannelConnectivity.READY)
+        self.assertIsNotNone(interfaces.ChannelConnectivity.TRANSIENT_FAILURE)
+        self.assertIsNotNone(interfaces.ChannelConnectivity.FATAL_FAILURE)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/beta/_face_interface_test.py b/src/python/grpcio_tests/tests/unit/beta/_face_interface_test.py
index 3a67516906dca30fc97827a4c16afcce38aa82a6..f42144262413f6f726c70cc98e7bfa91442e4da0 100644
--- a/src/python/grpcio_tests/tests/unit/beta/_face_interface_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_face_interface_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests Face interface compliance of the gRPC Python Beta API."""
 
 import collections
@@ -47,94 +46,97 @@ _SERVER_HOST_OVERRIDE = 'foo.test.google.fr'
 
 
 class _SerializationBehaviors(
-    collections.namedtuple(
-        '_SerializationBehaviors',
-        ('request_serializers', 'request_deserializers', 'response_serializers',
-         'response_deserializers',))):
-  pass
+        collections.namedtuple('_SerializationBehaviors', (
+            'request_serializers',
+            'request_deserializers',
+            'response_serializers',
+            'response_deserializers',))):
+    pass
 
 
 def _serialization_behaviors_from_test_methods(test_methods):
-  request_serializers = {}
-  request_deserializers = {}
-  response_serializers = {}
-  response_deserializers = {}
-  for (group, method), test_method in six.iteritems(test_methods):
-    request_serializers[group, method] = test_method.serialize_request
-    request_deserializers[group, method] = test_method.deserialize_request
-    response_serializers[group, method] = test_method.serialize_response
-    response_deserializers[group, method] = test_method.deserialize_response
-  return _SerializationBehaviors(
-      request_serializers, request_deserializers, response_serializers,
-      response_deserializers)
+    request_serializers = {}
+    request_deserializers = {}
+    response_serializers = {}
+    response_deserializers = {}
+    for (group, method), test_method in six.iteritems(test_methods):
+        request_serializers[group, method] = test_method.serialize_request
+        request_deserializers[group, method] = test_method.deserialize_request
+        response_serializers[group, method] = test_method.serialize_response
+        response_deserializers[group, method] = test_method.deserialize_response
+    return _SerializationBehaviors(request_serializers, request_deserializers,
+                                   response_serializers, response_deserializers)
 
 
 class _Implementation(test_interfaces.Implementation):
 
-  def instantiate(
-      self, methods, method_implementations, multi_method_implementation):
-    serialization_behaviors = _serialization_behaviors_from_test_methods(
-        methods)
-    # TODO(nathaniel): Add a "groups" attribute to _digest.TestServiceDigest.
-    service = next(iter(methods))[0]
-    # TODO(nathaniel): Add a "cardinalities_by_group" attribute to
-    # _digest.TestServiceDigest.
-    cardinalities = {
-        method: method_object.cardinality()
-        for (group, method), method_object in six.iteritems(methods)}
-
-    server_options = implementations.server_options(
-        request_deserializers=serialization_behaviors.request_deserializers,
-        response_serializers=serialization_behaviors.response_serializers,
-        thread_pool_size=test_constants.POOL_SIZE)
-    server = implementations.server(
-        method_implementations, options=server_options)
-    server_credentials = implementations.ssl_server_credentials(
-        [(resources.private_key(), resources.certificate_chain(),),])
-    port = server.add_secure_port('[::]:0', server_credentials)
-    server.start()
-    channel_credentials = implementations.ssl_channel_credentials(
-        resources.test_root_certificates())
-    channel = test_utilities.not_really_secure_channel(
-        'localhost', port, channel_credentials, _SERVER_HOST_OVERRIDE)
-    stub_options = implementations.stub_options(
-        request_serializers=serialization_behaviors.request_serializers,
-        response_deserializers=serialization_behaviors.response_deserializers,
-        thread_pool_size=test_constants.POOL_SIZE)
-    generic_stub = implementations.generic_stub(channel, options=stub_options)
-    dynamic_stub = implementations.dynamic_stub(
-        channel, service, cardinalities, options=stub_options)
-    return generic_stub, {service: dynamic_stub}, server
-
-  def destantiate(self, memo):
-    memo.stop(test_constants.SHORT_TIMEOUT).wait()
-
-  def invocation_metadata(self):
-    return grpc_test_common.INVOCATION_INITIAL_METADATA
-
-  def initial_metadata(self):
-    return grpc_test_common.SERVICE_INITIAL_METADATA
-
-  def terminal_metadata(self):
-    return grpc_test_common.SERVICE_TERMINAL_METADATA
-
-  def code(self):
-    return interfaces.StatusCode.OK
-
-  def details(self):
-    return grpc_test_common.DETAILS
-
-  def metadata_transmitted(self, original_metadata, transmitted_metadata):
-    return original_metadata is None or grpc_test_common.metadata_transmitted(
-        original_metadata, transmitted_metadata)
+    def instantiate(self, methods, method_implementations,
+                    multi_method_implementation):
+        serialization_behaviors = _serialization_behaviors_from_test_methods(
+            methods)
+        # TODO(nathaniel): Add a "groups" attribute to _digest.TestServiceDigest.
+        service = next(iter(methods))[0]
+        # TODO(nathaniel): Add a "cardinalities_by_group" attribute to
+        # _digest.TestServiceDigest.
+        cardinalities = {
+            method: method_object.cardinality()
+            for (group, method), method_object in six.iteritems(methods)
+        }
+
+        server_options = implementations.server_options(
+            request_deserializers=serialization_behaviors.request_deserializers,
+            response_serializers=serialization_behaviors.response_serializers,
+            thread_pool_size=test_constants.POOL_SIZE)
+        server = implementations.server(
+            method_implementations, options=server_options)
+        server_credentials = implementations.ssl_server_credentials([(
+            resources.private_key(),
+            resources.certificate_chain(),),])
+        port = server.add_secure_port('[::]:0', server_credentials)
+        server.start()
+        channel_credentials = implementations.ssl_channel_credentials(
+            resources.test_root_certificates())
+        channel = test_utilities.not_really_secure_channel(
+            'localhost', port, channel_credentials, _SERVER_HOST_OVERRIDE)
+        stub_options = implementations.stub_options(
+            request_serializers=serialization_behaviors.request_serializers,
+            response_deserializers=serialization_behaviors.
+            response_deserializers,
+            thread_pool_size=test_constants.POOL_SIZE)
+        generic_stub = implementations.generic_stub(
+            channel, options=stub_options)
+        dynamic_stub = implementations.dynamic_stub(
+            channel, service, cardinalities, options=stub_options)
+        return generic_stub, {service: dynamic_stub}, server
+
+    def destantiate(self, memo):
+        memo.stop(test_constants.SHORT_TIMEOUT).wait()
+
+    def invocation_metadata(self):
+        return grpc_test_common.INVOCATION_INITIAL_METADATA
+
+    def initial_metadata(self):
+        return grpc_test_common.SERVICE_INITIAL_METADATA
+
+    def terminal_metadata(self):
+        return grpc_test_common.SERVICE_TERMINAL_METADATA
+
+    def code(self):
+        return interfaces.StatusCode.OK
+
+    def details(self):
+        return grpc_test_common.DETAILS
+
+    def metadata_transmitted(self, original_metadata, transmitted_metadata):
+        return original_metadata is None or grpc_test_common.metadata_transmitted(
+            original_metadata, transmitted_metadata)
 
 
 def load_tests(loader, tests, pattern):
-  return unittest.TestSuite(
-      tests=tuple(
-          loader.loadTestsFromTestCase(test_case_class)
-          for test_case_class in test_cases.test_cases(_Implementation())))
+    return unittest.TestSuite(tests=tuple(
+        loader.loadTestsFromTestCase(test_case_class)
+        for test_case_class in test_cases.test_cases(_Implementation())))
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/beta/_implementations_test.py b/src/python/grpcio_tests/tests/unit/beta/_implementations_test.py
index 127f93e9bb587200d80dd7007d0b85a303266676..69bb5cc2a533dbfd247ce4bca6da386094fff708 100644
--- a/src/python/grpcio_tests/tests/unit/beta/_implementations_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_implementations_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests the implementations module of the gRPC Python Beta API."""
 
 import datetime
@@ -40,31 +39,32 @@ from tests.unit import resources
 
 class ChannelCredentialsTest(unittest.TestCase):
 
-  def test_runtime_provided_root_certificates(self):
-    channel_credentials = implementations.ssl_channel_credentials()
-    self.assertIsInstance(
-        channel_credentials, implementations.ChannelCredentials)
-  
-  def test_application_provided_root_certificates(self):
-    channel_credentials = implementations.ssl_channel_credentials(
-        resources.test_root_certificates())
-    self.assertIsInstance(
-        channel_credentials, implementations.ChannelCredentials)
+    def test_runtime_provided_root_certificates(self):
+        channel_credentials = implementations.ssl_channel_credentials()
+        self.assertIsInstance(channel_credentials,
+                              implementations.ChannelCredentials)
+
+    def test_application_provided_root_certificates(self):
+        channel_credentials = implementations.ssl_channel_credentials(
+            resources.test_root_certificates())
+        self.assertIsInstance(channel_credentials,
+                              implementations.ChannelCredentials)
 
 
 class CallCredentialsTest(unittest.TestCase):
 
-  def test_google_call_credentials(self):
-    creds = oauth2client_client.GoogleCredentials(
-        'token', 'client_id', 'secret', 'refresh_token',
-        datetime.datetime(2008, 6, 24), 'https://refresh.uri.com/',
-        'user_agent')
-    call_creds = implementations.google_call_credentials(creds)
-    self.assertIsInstance(call_creds, implementations.CallCredentials)
+    def test_google_call_credentials(self):
+        creds = oauth2client_client.GoogleCredentials(
+            'token', 'client_id', 'secret', 'refresh_token',
+            datetime.datetime(2008, 6, 24), 'https://refresh.uri.com/',
+            'user_agent')
+        call_creds = implementations.google_call_credentials(creds)
+        self.assertIsInstance(call_creds, implementations.CallCredentials)
+
+    def test_access_token_call_credentials(self):
+        call_creds = implementations.access_token_call_credentials('token')
+        self.assertIsInstance(call_creds, implementations.CallCredentials)
 
-  def test_access_token_call_credentials(self):
-    call_creds = implementations.access_token_call_credentials('token')
-    self.assertIsInstance(call_creds, implementations.CallCredentials)
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/beta/_not_found_test.py b/src/python/grpcio_tests/tests/unit/beta/_not_found_test.py
index 37b8c49120fb0bf5d84f67462c51928075535be0..ce7b91e9fe98bf57d0980f9f17ed82b396a7b0fc 100644
--- a/src/python/grpcio_tests/tests/unit/beta/_not_found_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_not_found_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of RPC-method-not-found behavior."""
 
 import unittest
@@ -39,37 +38,38 @@ from tests.unit.framework.common import test_constants
 
 class NotFoundTest(unittest.TestCase):
 
-  def setUp(self):
-    self._server = implementations.server({})
-    port = self._server.add_insecure_port('[::]:0')
-    channel = implementations.insecure_channel('localhost', port)
-    self._generic_stub = implementations.generic_stub(channel)
-    self._server.start()
+    def setUp(self):
+        self._server = implementations.server({})
+        port = self._server.add_insecure_port('[::]:0')
+        channel = implementations.insecure_channel('localhost', port)
+        self._generic_stub = implementations.generic_stub(channel)
+        self._server.start()
 
-  def tearDown(self):
-    self._server.stop(0).wait()
-    self._generic_stub = None
+    def tearDown(self):
+        self._server.stop(0).wait()
+        self._generic_stub = None
 
-  def test_blocking_unary_unary_not_found(self):
-    with self.assertRaises(face.LocalError) as exception_assertion_context:
-      self._generic_stub.blocking_unary_unary(
-          'groop', 'meffod', b'abc', test_constants.LONG_TIMEOUT,
-          with_call=True)
-    self.assertIs(
-        exception_assertion_context.exception.code,
-        interfaces.StatusCode.UNIMPLEMENTED)
+    def test_blocking_unary_unary_not_found(self):
+        with self.assertRaises(face.LocalError) as exception_assertion_context:
+            self._generic_stub.blocking_unary_unary(
+                'groop',
+                'meffod',
+                b'abc',
+                test_constants.LONG_TIMEOUT,
+                with_call=True)
+        self.assertIs(exception_assertion_context.exception.code,
+                      interfaces.StatusCode.UNIMPLEMENTED)
 
-  def test_future_stream_unary_not_found(self):
-    rpc_future = self._generic_stub.future_stream_unary(
-        'grupe', 'mevvod', [b'def'], test_constants.LONG_TIMEOUT)
-    with self.assertRaises(face.LocalError) as exception_assertion_context:
-      rpc_future.result()
-    self.assertIs(
-        exception_assertion_context.exception.code,
-        interfaces.StatusCode.UNIMPLEMENTED)
-    self.assertIs(
-        rpc_future.exception().code, interfaces.StatusCode.UNIMPLEMENTED)
+    def test_future_stream_unary_not_found(self):
+        rpc_future = self._generic_stub.future_stream_unary(
+            'grupe', 'mevvod', iter([b'def']), test_constants.LONG_TIMEOUT)
+        with self.assertRaises(face.LocalError) as exception_assertion_context:
+            rpc_future.result()
+        self.assertIs(exception_assertion_context.exception.code,
+                      interfaces.StatusCode.UNIMPLEMENTED)
+        self.assertIs(rpc_future.exception().code,
+                      interfaces.StatusCode.UNIMPLEMENTED)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/beta/_utilities_test.py b/src/python/grpcio_tests/tests/unit/beta/_utilities_test.py
index 90fe10c77ce8d4df6e3bdf8b727a6dbf492cfe76..e8e62c322a7ae34bc168e54bd763766e51ac1b9e 100644
--- a/src/python/grpcio_tests/tests/unit/beta/_utilities_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_utilities_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests of grpc.beta.utilities."""
 
 import threading
@@ -41,68 +40,68 @@ from tests.unit.framework.common import test_constants
 
 class _Callback(object):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._value = None
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._value = None
 
-  def accept_value(self, value):
-    with self._condition:
-      self._value = value
-      self._condition.notify_all()
+    def accept_value(self, value):
+        with self._condition:
+            self._value = value
+            self._condition.notify_all()
 
-  def block_until_called(self):
-    with self._condition:
-      while self._value is None:
-        self._condition.wait()
-      return self._value
+    def block_until_called(self):
+        with self._condition:
+            while self._value is None:
+                self._condition.wait()
+            return self._value
 
 
 class ChannelConnectivityTest(unittest.TestCase):
 
-  def test_lonely_channel_connectivity(self):
-    channel = implementations.insecure_channel('localhost', 12345)
-    callback = _Callback()
-
-    ready_future = utilities.channel_ready_future(channel)
-    ready_future.add_done_callback(callback.accept_value)
-    with self.assertRaises(future.TimeoutError):
-      ready_future.result(test_constants.SHORT_TIMEOUT)
-    self.assertFalse(ready_future.cancelled())
-    self.assertFalse(ready_future.done())
-    self.assertTrue(ready_future.running())
-    ready_future.cancel()
-    value_passed_to_callback = callback.block_until_called()
-    self.assertIs(ready_future, value_passed_to_callback)
-    self.assertTrue(ready_future.cancelled())
-    self.assertTrue(ready_future.done())
-    self.assertFalse(ready_future.running())
-
-  def test_immediately_connectable_channel_connectivity(self):
-    server = implementations.server({})
-    port = server.add_insecure_port('[::]:0')
-    server.start()
-    channel = implementations.insecure_channel('localhost', port)
-    callback = _Callback()
-
-    try:
-      ready_future = utilities.channel_ready_future(channel)
-      ready_future.add_done_callback(callback.accept_value)
-      self.assertIsNone(
-          ready_future.result(test_constants.SHORT_TIMEOUT))
-      value_passed_to_callback = callback.block_until_called()
-      self.assertIs(ready_future, value_passed_to_callback)
-      self.assertFalse(ready_future.cancelled())
-      self.assertTrue(ready_future.done())
-      self.assertFalse(ready_future.running())
-      # Cancellation after maturity has no effect.
-      ready_future.cancel()
-      self.assertFalse(ready_future.cancelled())
-      self.assertTrue(ready_future.done())
-      self.assertFalse(ready_future.running())
-    finally:
-      ready_future.cancel()
-      server.stop(0)
+    def test_lonely_channel_connectivity(self):
+        channel = implementations.insecure_channel('localhost', 12345)
+        callback = _Callback()
+
+        ready_future = utilities.channel_ready_future(channel)
+        ready_future.add_done_callback(callback.accept_value)
+        with self.assertRaises(future.TimeoutError):
+            ready_future.result(timeout=test_constants.SHORT_TIMEOUT)
+        self.assertFalse(ready_future.cancelled())
+        self.assertFalse(ready_future.done())
+        self.assertTrue(ready_future.running())
+        ready_future.cancel()
+        value_passed_to_callback = callback.block_until_called()
+        self.assertIs(ready_future, value_passed_to_callback)
+        self.assertTrue(ready_future.cancelled())
+        self.assertTrue(ready_future.done())
+        self.assertFalse(ready_future.running())
+
+    def test_immediately_connectable_channel_connectivity(self):
+        server = implementations.server({})
+        port = server.add_insecure_port('[::]:0')
+        server.start()
+        channel = implementations.insecure_channel('localhost', port)
+        callback = _Callback()
+
+        try:
+            ready_future = utilities.channel_ready_future(channel)
+            ready_future.add_done_callback(callback.accept_value)
+            self.assertIsNone(
+                ready_future.result(timeout=test_constants.LONG_TIMEOUT))
+            value_passed_to_callback = callback.block_until_called()
+            self.assertIs(ready_future, value_passed_to_callback)
+            self.assertFalse(ready_future.cancelled())
+            self.assertTrue(ready_future.done())
+            self.assertFalse(ready_future.running())
+            # Cancellation after maturity has no effect.
+            ready_future.cancel()
+            self.assertFalse(ready_future.cancelled())
+            self.assertTrue(ready_future.done())
+            self.assertFalse(ready_future.running())
+        finally:
+            ready_future.cancel()
+            server.stop(0)
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/beta/test_utilities.py b/src/python/grpcio_tests/tests/unit/beta/test_utilities.py
index 692da9c97d78866411a4be9d1c74b0059782d704..f542420683778862acab15f75caf90f7e5e66f77 100644
--- a/src/python/grpcio_tests/tests/unit/beta/test_utilities.py
+++ b/src/python/grpcio_tests/tests/unit/beta/test_utilities.py
@@ -26,16 +26,15 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Test-appropriate entry points into the gRPC Python Beta API."""
 
 import grpc
 from grpc.beta import implementations
 
 
-def not_really_secure_channel(
-    host, port, channel_credentials, server_host_override):
-  """Creates an insecure Channel to a remote host.
+def not_really_secure_channel(host, port, channel_credentials,
+                              server_host_override):
+    """Creates an insecure Channel to a remote host.
 
   Args:
     host: The name of the remote host to which to connect.
@@ -48,8 +47,8 @@ def not_really_secure_channel(
     An implementations.Channel to the remote host through which RPCs may be
       conducted.
   """
-  target = '%s:%d' % (host, port)
-  channel = grpc.secure_channel(
-      target, channel_credentials,
-      (('grpc.ssl_target_name_override', server_host_override,),))
-  return implementations.Channel(channel)
+    target = '%s:%d' % (host, port)
+    channel = grpc.secure_channel(target, channel_credentials, ((
+        'grpc.ssl_target_name_override',
+        server_host_override,),))
+    return implementations.Channel(channel)
diff --git a/src/python/grpcio_tests/tests/unit/framework/__init__.py b/src/python/grpcio_tests/tests/unit/framework/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/unit/framework/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/framework/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/unit/framework/common/__init__.py b/src/python/grpcio_tests/tests/unit/framework/common/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/unit/framework/common/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/framework/common/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/unit/framework/common/test_constants.py b/src/python/grpcio_tests/tests/unit/framework/common/test_constants.py
index b6682d396c9b9bcd2b5d489752bfb482a3c0697e..905483c08d78e90e42c064593a6191645d351981 100644
--- a/src/python/grpcio_tests/tests/unit/framework/common/test_constants.py
+++ b/src/python/grpcio_tests/tests/unit/framework/common/test_constants.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Constants shared among tests throughout RPC Framework."""
 
 # Value for maximum duration in seconds that a test is allowed for its actual
diff --git a/src/python/grpcio_tests/tests/unit/framework/common/test_control.py b/src/python/grpcio_tests/tests/unit/framework/common/test_control.py
index 088e2f8b8850752a7def3decc73a02df1581faef..af08731b1ee0c8bc5194df15034387e54e80e9dc 100644
--- a/src/python/grpcio_tests/tests/unit/framework/common/test_control.py
+++ b/src/python/grpcio_tests/tests/unit/framework/common/test_control.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Code for instructing systems under test to block or fail."""
 
 import abc
@@ -37,7 +36,7 @@ import six
 
 
 class Defect(Exception):
-  """Simulates a programming defect raised into in a system under test.
+    """Simulates a programming defect raised into in a system under test.
 
   Use of a standard exception type is too easily misconstrued as an actual
   defect in either the test infrastructure or the system under test.
@@ -45,7 +44,7 @@ class Defect(Exception):
 
 
 class Control(six.with_metaclass(abc.ABCMeta)):
-  """An object that accepts program control from a system under test.
+    """An object that accepts program control from a system under test.
 
   Systems under test passed a Control should call its control() method
   frequently during execution. The control() method may block, raise an
@@ -53,61 +52,61 @@ class Control(six.with_metaclass(abc.ABCMeta)):
   the system under test to simulate hanging, failing, or functioning.
   """
 
-  @abc.abstractmethod
-  def control(self):
-    """Potentially does anything."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def control(self):
+        """Potentially does anything."""
+        raise NotImplementedError()
 
 
 class PauseFailControl(Control):
-  """A Control that can be used to pause or fail code under control.
+    """A Control that can be used to pause or fail code under control.
 
   This object is only safe for use from two threads: one of the system under
   test calling control and the other from the test system calling pause,
   block_until_paused, and fail.
   """
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._pause = False
-    self._paused = False
-    self._fail = False
-
-  def control(self):
-    with self._condition:
-      if self._fail:
-        raise Defect()
-
-      while self._pause:
-        self._paused = True
-        self._condition.notify_all()
-        self._condition.wait()
-      self._paused = False
-
-  @contextlib.contextmanager
-  def pause(self):
-    """Pauses code under control while controlling code is in context."""
-    with self._condition:
-      self._pause = True
-    yield
-    with self._condition:
-      self._pause = False
-      self._condition.notify_all()
-
-  def block_until_paused(self):
-    """Blocks controlling code until code under control is paused.
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._pause = False
+        self._paused = False
+        self._fail = False
+
+    def control(self):
+        with self._condition:
+            if self._fail:
+                raise Defect()
+
+            while self._pause:
+                self._paused = True
+                self._condition.notify_all()
+                self._condition.wait()
+            self._paused = False
+
+    @contextlib.contextmanager
+    def pause(self):
+        """Pauses code under control while controlling code is in context."""
+        with self._condition:
+            self._pause = True
+        yield
+        with self._condition:
+            self._pause = False
+            self._condition.notify_all()
+
+    def block_until_paused(self):
+        """Blocks controlling code until code under control is paused.
 
     May only be called within the context of a pause call.
     """
-    with self._condition:
-      while not self._paused:
-        self._condition.wait()
-
-  @contextlib.contextmanager
-  def fail(self):
-    """Fails code under control while controlling code is in context."""
-    with self._condition:
-      self._fail = True
-    yield
-    with self._condition:
-      self._fail = False
+        with self._condition:
+            while not self._paused:
+                self._condition.wait()
+
+    @contextlib.contextmanager
+    def fail(self):
+        """Fails code under control while controlling code is in context."""
+        with self._condition:
+            self._fail = True
+        yield
+        with self._condition:
+            self._fail = False
diff --git a/src/python/grpcio_tests/tests/unit/framework/common/test_coverage.py b/src/python/grpcio_tests/tests/unit/framework/common/test_coverage.py
index ea2d2812ce646712ea7162500bbf07acc8c42bc2..13ceec31a01f659cfb33be79511b28779cf253cc 100644
--- a/src/python/grpcio_tests/tests/unit/framework/common/test_coverage.py
+++ b/src/python/grpcio_tests/tests/unit/framework/common/test_coverage.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Governs coverage for tests of RPCs throughout RPC Framework."""
 
 import abc
@@ -38,80 +37,80 @@ import six
 
 
 class Coverage(six.with_metaclass(abc.ABCMeta)):
-  """Specification of test coverage."""
+    """Specification of test coverage."""
 
-  @abc.abstractmethod
-  def testSuccessfulUnaryRequestUnaryResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testSuccessfulUnaryRequestUnaryResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testSuccessfulUnaryRequestStreamResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testSuccessfulUnaryRequestStreamResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testSuccessfulStreamRequestUnaryResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testSuccessfulStreamRequestUnaryResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testSuccessfulStreamRequestStreamResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testSuccessfulStreamRequestStreamResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testSequentialInvocations(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testSequentialInvocations(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testParallelInvocations(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testParallelInvocations(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testWaitingForSomeButNotAllParallelInvocations(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testWaitingForSomeButNotAllParallelInvocations(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testCancelledUnaryRequestUnaryResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testCancelledUnaryRequestUnaryResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testCancelledUnaryRequestStreamResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testCancelledUnaryRequestStreamResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testCancelledStreamRequestUnaryResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testCancelledStreamRequestUnaryResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testCancelledStreamRequestStreamResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testCancelledStreamRequestStreamResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testExpiredUnaryRequestUnaryResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testExpiredUnaryRequestUnaryResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testExpiredUnaryRequestStreamResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testExpiredUnaryRequestStreamResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testExpiredStreamRequestUnaryResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testExpiredStreamRequestUnaryResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testExpiredStreamRequestStreamResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testExpiredStreamRequestStreamResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testFailedUnaryRequestUnaryResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testFailedUnaryRequestUnaryResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testFailedUnaryRequestStreamResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testFailedUnaryRequestStreamResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testFailedStreamRequestUnaryResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testFailedStreamRequestUnaryResponse(self):
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def testFailedStreamRequestStreamResponse(self):
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def testFailedStreamRequestStreamResponse(self):
+        raise NotImplementedError()
diff --git a/src/python/grpcio_tests/tests/unit/framework/foundation/__init__.py b/src/python/grpcio_tests/tests/unit/framework/foundation/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/unit/framework/foundation/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/framework/foundation/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/unit/framework/foundation/_logging_pool_test.py b/src/python/grpcio_tests/tests/unit/framework/foundation/_logging_pool_test.py
index 330e445d43323a602c465c6c4967c5225c38b8c1..19e8cbdd8ebc80e952bd58eec1805d6335420cc5 100644
--- a/src/python/grpcio_tests/tests/unit/framework/foundation/_logging_pool_test.py
+++ b/src/python/grpcio_tests/tests/unit/framework/foundation/_logging_pool_test.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tests for grpc.framework.foundation.logging_pool."""
 
 import threading
@@ -39,50 +38,51 @@ _POOL_SIZE = 16
 
 class _CallableObject(object):
 
-  def __init__(self):
-    self._lock = threading.Lock()
-    self._passed_values = []
+    def __init__(self):
+        self._lock = threading.Lock()
+        self._passed_values = []
 
-  def __call__(self, value):
-    with self._lock:
-      self._passed_values.append(value)
+    def __call__(self, value):
+        with self._lock:
+            self._passed_values.append(value)
 
-  def passed_values(self):
-    with self._lock:
-      return tuple(self._passed_values)
+    def passed_values(self):
+        with self._lock:
+            return tuple(self._passed_values)
 
 
 class LoggingPoolTest(unittest.TestCase):
 
-  def testUpAndDown(self):
-    pool = logging_pool.pool(_POOL_SIZE)
-    pool.shutdown(wait=True)
+    def testUpAndDown(self):
+        pool = logging_pool.pool(_POOL_SIZE)
+        pool.shutdown(wait=True)
 
-    with logging_pool.pool(_POOL_SIZE) as pool:
-      self.assertIsNotNone(pool)
+        with logging_pool.pool(_POOL_SIZE) as pool:
+            self.assertIsNotNone(pool)
 
-  def testTaskExecuted(self):
-    test_list = []
+    def testTaskExecuted(self):
+        test_list = []
 
-    with logging_pool.pool(_POOL_SIZE) as pool:
-      pool.submit(lambda: test_list.append(object())).result()
+        with logging_pool.pool(_POOL_SIZE) as pool:
+            pool.submit(lambda: test_list.append(object())).result()
 
-    self.assertTrue(test_list)
+        self.assertTrue(test_list)
 
-  def testException(self):
-    with logging_pool.pool(_POOL_SIZE) as pool:
-      raised_exception = pool.submit(lambda: 1/0).exception()
+    def testException(self):
+        with logging_pool.pool(_POOL_SIZE) as pool:
+            raised_exception = pool.submit(lambda: 1 / 0).exception()
 
-    self.assertIsNotNone(raised_exception)
+        self.assertIsNotNone(raised_exception)
 
-  def testCallableObjectExecuted(self):
-    callable_object = _CallableObject()
-    passed_object = object()
-    with logging_pool.pool(_POOL_SIZE) as pool:
-      future = pool.submit(callable_object, passed_object)
-    self.assertIsNone(future.result())
-    self.assertSequenceEqual((passed_object,), callable_object.passed_values())
+    def testCallableObjectExecuted(self):
+        callable_object = _CallableObject()
+        passed_object = object()
+        with logging_pool.pool(_POOL_SIZE) as pool:
+            future = pool.submit(callable_object, passed_object)
+        self.assertIsNone(future.result())
+        self.assertSequenceEqual((passed_object,),
+                                 callable_object.passed_values())
 
 
 if __name__ == '__main__':
-  unittest.main(verbosity=2)
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/framework/foundation/stream_testing.py b/src/python/grpcio_tests/tests/unit/framework/foundation/stream_testing.py
index 098a53d5e75d19caebfbcbdc89495d836e82ded7..2929e4dd786263e3e3b4eb26a16ca3435413943d 100644
--- a/src/python/grpcio_tests/tests/unit/framework/foundation/stream_testing.py
+++ b/src/python/grpcio_tests/tests/unit/framework/foundation/stream_testing.py
@@ -26,48 +26,47 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Utilities for testing stream-related code."""
 
 from grpc.framework.foundation import stream
 
 
 class TestConsumer(stream.Consumer):
-  """A stream.Consumer instrumented for testing.
+    """A stream.Consumer instrumented for testing.
 
   Attributes:
     calls: A sequence of value-termination pairs describing the history of calls
       made on this object.
   """
 
-  def __init__(self):
-    self.calls = []
+    def __init__(self):
+        self.calls = []
 
-  def consume(self, value):
-    """See stream.Consumer.consume for specification."""
-    self.calls.append((value, False))
+    def consume(self, value):
+        """See stream.Consumer.consume for specification."""
+        self.calls.append((value, False))
 
-  def terminate(self):
-    """See stream.Consumer.terminate for specification."""
-    self.calls.append((None, True))
+    def terminate(self):
+        """See stream.Consumer.terminate for specification."""
+        self.calls.append((None, True))
 
-  def consume_and_terminate(self, value):
-    """See stream.Consumer.consume_and_terminate for specification."""
-    self.calls.append((value, True))
+    def consume_and_terminate(self, value):
+        """See stream.Consumer.consume_and_terminate for specification."""
+        self.calls.append((value, True))
 
-  def is_legal(self):
-    """Reports whether or not a legal sequence of calls has been made."""
-    terminated = False
-    for value, terminal in self.calls:
-      if terminated:
-        return False
-      elif terminal:
-        terminated = True
-      elif value is None:
-        return False
-    else:  # pylint: disable=useless-else-on-loop
-      return True
+    def is_legal(self):
+        """Reports whether or not a legal sequence of calls has been made."""
+        terminated = False
+        for value, terminal in self.calls:
+            if terminated:
+                return False
+            elif terminal:
+                terminated = True
+            elif value is None:
+                return False
+        else:  # pylint: disable=useless-else-on-loop
+            return True
 
-  def values(self):
-    """Returns the sequence of values that have been passed to this Consumer."""
-    return [value for value, _ in self.calls if value]
+    def values(self):
+        """Returns the sequence of values that have been passed to this Consumer."""
+        return [value for value, _ in self.calls if value]
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/__init__.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_3069_test_constant.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_3069_test_constant.py
index 1ea356c0bf25fbc1f2d0a8af043a8809fd0b9cac..2aec25c9eff25832792f5fcaed713db712440f04 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_3069_test_constant.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_3069_test_constant.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """A test constant working around issue 3069."""
 
 # test_constants is referenced from specification in this module.
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/__init__.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/__init__.py
index 708651910607ffb686d781713f6893567821b9fd..b89398809fabc7c2aab0462cc52a91e31b76e9e6 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/__init__.py
@@ -26,5 +26,3 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_blocking_invocation_inline_service.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_blocking_invocation_inline_service.py
index e338aaa396d248c86fa5a02b26c8353f9f28dae1..a79834f96ff56059073e282cbcaf2fd38638bde9 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_blocking_invocation_inline_service.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_blocking_invocation_inline_service.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Test code for the Face layer of RPC Framework."""
 
 from __future__ import division
@@ -50,246 +49,254 @@ from tests.unit.framework.interfaces.face import _stock_service
 from tests.unit.framework.interfaces.face import test_interfaces  # pylint: disable=unused-import
 
 
-class TestCase(six.with_metaclass(abc.ABCMeta, test_coverage.Coverage, unittest.TestCase)):
-  """A test of the Face layer of RPC Framework.
+class TestCase(
+        six.with_metaclass(abc.ABCMeta, test_coverage.Coverage,
+                           unittest.TestCase)):
+    """A test of the Face layer of RPC Framework.
 
   Concrete subclasses must have an "implementation" attribute of type
   test_interfaces.Implementation and an "invoker_constructor" attribute of type
   _invocation.InvokerConstructor.
   """
 
-  NAME = 'BlockingInvocationInlineServiceTest'
+    NAME = 'BlockingInvocationInlineServiceTest'
 
-  def setUp(self):
-    """See unittest.TestCase.setUp for full specification.
+    def setUp(self):
+        """See unittest.TestCase.setUp for full specification.
 
     Overriding implementations must call this implementation.
     """
-    self._control = test_control.PauseFailControl()
-    self._digest = _digest.digest(
-        _stock_service.STOCK_TEST_SERVICE, self._control, None)
+        self._control = test_control.PauseFailControl()
+        self._digest = _digest.digest(_stock_service.STOCK_TEST_SERVICE,
+                                      self._control, None)
 
-    generic_stub, dynamic_stubs, self._memo = self.implementation.instantiate(
-        self._digest.methods, self._digest.inline_method_implementations, None)
-    self._invoker = self.invoker_constructor.construct_invoker(
-        generic_stub, dynamic_stubs, self._digest.methods)
+        generic_stub, dynamic_stubs, self._memo = self.implementation.instantiate(
+            self._digest.methods, self._digest.inline_method_implementations,
+            None)
+        self._invoker = self.invoker_constructor.construct_invoker(
+            generic_stub, dynamic_stubs, self._digest.methods)
 
-  def tearDown(self):
-    """See unittest.TestCase.tearDown for full specification.
+    def tearDown(self):
+        """See unittest.TestCase.tearDown for full specification.
 
     Overriding implementations must call this implementation.
     """
-    self._invoker = None
-    self.implementation.destantiate(self._memo)
-
-  def testSuccessfulUnaryRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        response, call = self._invoker.blocking(group, method)(
-            request, test_constants.LONG_TIMEOUT, with_call=True)
-
-        test_messages.verify(request, response, self)
-
-  def testSuccessfulUnaryRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        response_iterator = self._invoker.blocking(group, method)(
-            request, test_constants.LONG_TIMEOUT)
-        responses = list(response_iterator)
-
-        test_messages.verify(request, responses, self)
-
-  def testSuccessfulStreamRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-
-        response, call = self._invoker.blocking(group, method)(
-            iter(requests), test_constants.LONG_TIMEOUT, with_call=True)
-
-        test_messages.verify(requests, response, self)
-
-  def testSuccessfulStreamRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-
-        response_iterator = self._invoker.blocking(group, method)(
-            iter(requests), test_constants.LONG_TIMEOUT)
-        responses = list(response_iterator)
-
-        test_messages.verify(requests, responses, self)
-
-  def testSequentialInvocations(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        first_request = test_messages.request()
-        second_request = test_messages.request()
-
-        first_response = self._invoker.blocking(group, method)(
-            first_request, test_constants.LONG_TIMEOUT)
-
-        test_messages.verify(first_request, first_response, self)
-
-        second_response = self._invoker.blocking(group, method)(
-            second_request, test_constants.LONG_TIMEOUT)
-
-        test_messages.verify(second_request, second_response, self)
-
-  def testParallelInvocations(self):
-    pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = []
-        response_futures = []
-        for _ in range(test_constants.THREAD_CONCURRENCY):
-          request = test_messages.request()
-          response_future = pool.submit(
-              self._invoker.blocking(group, method), request,
-              test_constants.LONG_TIMEOUT)
-          requests.append(request)
-          response_futures.append(response_future)
-
-        responses = [
-            response_future.result() for response_future in response_futures]
-
-        for request, response in zip(requests, responses):
-          test_messages.verify(request, response, self)
-    pool.shutdown(wait=True)
-
-  def testWaitingForSomeButNotAllParallelInvocations(self):
-    pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = []
-        response_futures_to_indices = {}
-        for index in range(test_constants.THREAD_CONCURRENCY):
-          request = test_messages.request()
-          response_future = pool.submit(
-              self._invoker.blocking(group, method), request,
-              test_constants.LONG_TIMEOUT)
-          requests.append(request)
-          response_futures_to_indices[response_future] = index
-
-        some_completed_response_futures_iterator = itertools.islice(
-            futures.as_completed(response_futures_to_indices),
-            test_constants.THREAD_CONCURRENCY // 2)
-        for response_future in some_completed_response_futures_iterator:
-          index = response_futures_to_indices[response_future]
-          test_messages.verify(requests[index], response_future.result(), self)
-    pool.shutdown(wait=True)
-
-  @unittest.skip('Cancellation impossible with blocking control flow!')
-  def testCancelledUnaryRequestUnaryResponse(self):
-    raise NotImplementedError()
-
-  @unittest.skip('Cancellation impossible with blocking control flow!')
-  def testCancelledUnaryRequestStreamResponse(self):
-    raise NotImplementedError()
-
-  @unittest.skip('Cancellation impossible with blocking control flow!')
-  def testCancelledStreamRequestUnaryResponse(self):
-    raise NotImplementedError()
-
-  @unittest.skip('Cancellation impossible with blocking control flow!')
-  def testCancelledStreamRequestStreamResponse(self):
-    raise NotImplementedError()
-
-  def testExpiredUnaryRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        with self._control.pause(), self.assertRaises(
-            face.ExpirationError):
-          self._invoker.blocking(group, method)(
-              request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
-
-  def testExpiredUnaryRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        with self._control.pause(), self.assertRaises(
-            face.ExpirationError):
-          response_iterator = self._invoker.blocking(group, method)(
-              request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          list(response_iterator)
-
-  def testExpiredStreamRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-
-        with self._control.pause(), self.assertRaises(
-            face.ExpirationError):
-          self._invoker.blocking(group, method)(
-              iter(requests), _3069_test_constant.REALLY_SHORT_TIMEOUT)
-
-  def testExpiredStreamRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-
-        with self._control.pause(), self.assertRaises(
-            face.ExpirationError):
-          response_iterator = self._invoker.blocking(group, method)(
-              iter(requests), _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          list(response_iterator)
-
-  def testFailedUnaryRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        with self._control.fail(), self.assertRaises(face.RemoteError):
-          self._invoker.blocking(group, method)(
-              request, test_constants.LONG_TIMEOUT)
-
-  def testFailedUnaryRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        with self._control.fail(), self.assertRaises(face.RemoteError):
-          response_iterator = self._invoker.blocking(group, method)(
-              request, test_constants.LONG_TIMEOUT)
-          list(response_iterator)
-
-  def testFailedStreamRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-
-        with self._control.fail(), self.assertRaises(face.RemoteError):
-          self._invoker.blocking(group, method)(
-              iter(requests), test_constants.LONG_TIMEOUT)
-
-  def testFailedStreamRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-
-        with self._control.fail(), self.assertRaises(face.RemoteError):
-          response_iterator = self._invoker.blocking(group, method)(
-              iter(requests), test_constants.LONG_TIMEOUT)
-          list(response_iterator)
+        self._invoker = None
+        self.implementation.destantiate(self._memo)
+
+    def testSuccessfulUnaryRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                response, call = self._invoker.blocking(group, method)(
+                    request, test_constants.LONG_TIMEOUT, with_call=True)
+
+                test_messages.verify(request, response, self)
+
+    def testSuccessfulUnaryRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                response_iterator = self._invoker.blocking(group, method)(
+                    request, test_constants.LONG_TIMEOUT)
+                responses = list(response_iterator)
+
+                test_messages.verify(request, responses, self)
+
+    def testSuccessfulStreamRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+
+                response, call = self._invoker.blocking(group, method)(
+                    iter(requests), test_constants.LONG_TIMEOUT, with_call=True)
+
+                test_messages.verify(requests, response, self)
+
+    def testSuccessfulStreamRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+
+                response_iterator = self._invoker.blocking(group, method)(
+                    iter(requests), test_constants.LONG_TIMEOUT)
+                responses = list(response_iterator)
+
+                test_messages.verify(requests, responses, self)
+
+    def testSequentialInvocations(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                first_request = test_messages.request()
+                second_request = test_messages.request()
+
+                first_response = self._invoker.blocking(group, method)(
+                    first_request, test_constants.LONG_TIMEOUT)
+
+                test_messages.verify(first_request, first_response, self)
+
+                second_response = self._invoker.blocking(group, method)(
+                    second_request, test_constants.LONG_TIMEOUT)
+
+                test_messages.verify(second_request, second_response, self)
+
+    def testParallelInvocations(self):
+        pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = []
+                response_futures = []
+                for _ in range(test_constants.THREAD_CONCURRENCY):
+                    request = test_messages.request()
+                    response_future = pool.submit(
+                        self._invoker.blocking(group, method), request,
+                        test_constants.LONG_TIMEOUT)
+                    requests.append(request)
+                    response_futures.append(response_future)
+
+                responses = [
+                    response_future.result()
+                    for response_future in response_futures
+                ]
+
+                for request, response in zip(requests, responses):
+                    test_messages.verify(request, response, self)
+        pool.shutdown(wait=True)
+
+    def testWaitingForSomeButNotAllParallelInvocations(self):
+        pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = []
+                response_futures_to_indices = {}
+                for index in range(test_constants.THREAD_CONCURRENCY):
+                    request = test_messages.request()
+                    response_future = pool.submit(
+                        self._invoker.blocking(group, method), request,
+                        test_constants.LONG_TIMEOUT)
+                    requests.append(request)
+                    response_futures_to_indices[response_future] = index
+
+                some_completed_response_futures_iterator = itertools.islice(
+                    futures.as_completed(response_futures_to_indices),
+                    test_constants.THREAD_CONCURRENCY // 2)
+                for response_future in some_completed_response_futures_iterator:
+                    index = response_futures_to_indices[response_future]
+                    test_messages.verify(requests[index],
+                                         response_future.result(), self)
+        pool.shutdown(wait=True)
+
+    @unittest.skip('Cancellation impossible with blocking control flow!')
+    def testCancelledUnaryRequestUnaryResponse(self):
+        raise NotImplementedError()
+
+    @unittest.skip('Cancellation impossible with blocking control flow!')
+    def testCancelledUnaryRequestStreamResponse(self):
+        raise NotImplementedError()
+
+    @unittest.skip('Cancellation impossible with blocking control flow!')
+    def testCancelledStreamRequestUnaryResponse(self):
+        raise NotImplementedError()
+
+    @unittest.skip('Cancellation impossible with blocking control flow!')
+    def testCancelledStreamRequestStreamResponse(self):
+        raise NotImplementedError()
+
+    def testExpiredUnaryRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                with self._control.pause(), self.assertRaises(
+                        face.ExpirationError):
+                    self._invoker.blocking(group, method)(
+                        request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
+
+    def testExpiredUnaryRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                with self._control.pause(), self.assertRaises(
+                        face.ExpirationError):
+                    response_iterator = self._invoker.blocking(group, method)(
+                        request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    list(response_iterator)
+
+    def testExpiredStreamRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+
+                with self._control.pause(), self.assertRaises(
+                        face.ExpirationError):
+                    self._invoker.blocking(group, method)(
+                        iter(requests),
+                        _3069_test_constant.REALLY_SHORT_TIMEOUT)
+
+    def testExpiredStreamRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+
+                with self._control.pause(), self.assertRaises(
+                        face.ExpirationError):
+                    response_iterator = self._invoker.blocking(group, method)(
+                        iter(requests),
+                        _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    list(response_iterator)
+
+    def testFailedUnaryRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                with self._control.fail(), self.assertRaises(face.RemoteError):
+                    self._invoker.blocking(group, method)(
+                        request, test_constants.LONG_TIMEOUT)
+
+    def testFailedUnaryRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                with self._control.fail(), self.assertRaises(face.RemoteError):
+                    response_iterator = self._invoker.blocking(group, method)(
+                        request, test_constants.LONG_TIMEOUT)
+                    list(response_iterator)
+
+    def testFailedStreamRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+
+                with self._control.fail(), self.assertRaises(face.RemoteError):
+                    self._invoker.blocking(group, method)(
+                        iter(requests), test_constants.LONG_TIMEOUT)
+
+    def testFailedStreamRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+
+                with self._control.fail(), self.assertRaises(face.RemoteError):
+                    response_iterator = self._invoker.blocking(group, method)(
+                        iter(requests), test_constants.LONG_TIMEOUT)
+                    list(response_iterator)
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_digest.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_digest.py
index f0befb0b27336eb47df654ee0b5392d4e87b7999..0411da0a6670ba0c5fe7a0064ae2c03e01b777fd 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_digest.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_digest.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Code for making a service.TestService more amenable to use in tests."""
 
 import collections
@@ -49,17 +48,16 @@ _IDENTITY = lambda x: x
 
 
 class TestServiceDigest(
-    collections.namedtuple(
-        'TestServiceDigest',
-        ('methods',
-         'inline_method_implementations',
-         'event_method_implementations',
-         'multi_method_implementation',
-         'unary_unary_messages_sequences',
-         'unary_stream_messages_sequences',
-         'stream_unary_messages_sequences',
-         'stream_stream_messages_sequences',))):
-  """A transformation of a service.TestService.
+        collections.namedtuple('TestServiceDigest', (
+            'methods',
+            'inline_method_implementations',
+            'event_method_implementations',
+            'multi_method_implementation',
+            'unary_unary_messages_sequences',
+            'unary_stream_messages_sequences',
+            'stream_unary_messages_sequences',
+            'stream_stream_messages_sequences',))):
+    """A transformation of a service.TestService.
 
   Attributes:
     methods: A dict from method group-name pair to test_interfaces.Method object
@@ -88,303 +86,308 @@ class TestServiceDigest(
 
 
 class _BufferingConsumer(stream.Consumer):
-  """A trivial Consumer that dumps what it consumes in a user-mutable buffer."""
+    """A trivial Consumer that dumps what it consumes in a user-mutable buffer."""
 
-  def __init__(self):
-    self.consumed = []
-    self.terminated = False
+    def __init__(self):
+        self.consumed = []
+        self.terminated = False
 
-  def consume(self, value):
-    self.consumed.append(value)
+    def consume(self, value):
+        self.consumed.append(value)
 
-  def terminate(self):
-    self.terminated = True
+    def terminate(self):
+        self.terminated = True
 
-  def consume_and_terminate(self, value):
-    self.consumed.append(value)
-    self.terminated = True
+    def consume_and_terminate(self, value):
+        self.consumed.append(value)
+        self.terminated = True
 
 
 class _InlineUnaryUnaryMethod(face.MethodImplementation):
 
-  def __init__(self, unary_unary_test_method, control):
-    self._test_method = unary_unary_test_method
-    self._control = control
+    def __init__(self, unary_unary_test_method, control):
+        self._test_method = unary_unary_test_method
+        self._control = control
 
-    self.cardinality = cardinality.Cardinality.UNARY_UNARY
-    self.style = style.Service.INLINE
+        self.cardinality = cardinality.Cardinality.UNARY_UNARY
+        self.style = style.Service.INLINE
 
-  def unary_unary_inline(self, request, context):
-    response_list = []
-    self._test_method.service(
-        request, response_list.append, context, self._control)
-    return response_list.pop(0)
+    def unary_unary_inline(self, request, context):
+        response_list = []
+        self._test_method.service(request, response_list.append, context,
+                                  self._control)
+        return response_list.pop(0)
 
 
 class _EventUnaryUnaryMethod(face.MethodImplementation):
 
-  def __init__(self, unary_unary_test_method, control, pool):
-    self._test_method = unary_unary_test_method
-    self._control = control
-    self._pool = pool
+    def __init__(self, unary_unary_test_method, control, pool):
+        self._test_method = unary_unary_test_method
+        self._control = control
+        self._pool = pool
 
-    self.cardinality = cardinality.Cardinality.UNARY_UNARY
-    self.style = style.Service.EVENT
+        self.cardinality = cardinality.Cardinality.UNARY_UNARY
+        self.style = style.Service.EVENT
 
-  def unary_unary_event(self, request, response_callback, context):
-    if self._pool is None:
-      self._test_method.service(
-          request, response_callback, context, self._control)
-    else:
-      self._pool.submit(
-          self._test_method.service, request, response_callback, context,
-          self._control)
+    def unary_unary_event(self, request, response_callback, context):
+        if self._pool is None:
+            self._test_method.service(request, response_callback, context,
+                                      self._control)
+        else:
+            self._pool.submit(self._test_method.service, request,
+                              response_callback, context, self._control)
 
 
 class _InlineUnaryStreamMethod(face.MethodImplementation):
 
-  def __init__(self, unary_stream_test_method, control):
-    self._test_method = unary_stream_test_method
-    self._control = control
+    def __init__(self, unary_stream_test_method, control):
+        self._test_method = unary_stream_test_method
+        self._control = control
 
-    self.cardinality = cardinality.Cardinality.UNARY_STREAM
-    self.style = style.Service.INLINE
+        self.cardinality = cardinality.Cardinality.UNARY_STREAM
+        self.style = style.Service.INLINE
 
-  def unary_stream_inline(self, request, context):
-    response_consumer = _BufferingConsumer()
-    self._test_method.service(
-        request, response_consumer, context, self._control)
-    for response in response_consumer.consumed:
-      yield response
+    def unary_stream_inline(self, request, context):
+        response_consumer = _BufferingConsumer()
+        self._test_method.service(request, response_consumer, context,
+                                  self._control)
+        for response in response_consumer.consumed:
+            yield response
 
 
 class _EventUnaryStreamMethod(face.MethodImplementation):
 
-  def __init__(self, unary_stream_test_method, control, pool):
-    self._test_method = unary_stream_test_method
-    self._control = control
-    self._pool = pool
+    def __init__(self, unary_stream_test_method, control, pool):
+        self._test_method = unary_stream_test_method
+        self._control = control
+        self._pool = pool
 
-    self.cardinality = cardinality.Cardinality.UNARY_STREAM
-    self.style = style.Service.EVENT
+        self.cardinality = cardinality.Cardinality.UNARY_STREAM
+        self.style = style.Service.EVENT
 
-  def unary_stream_event(self, request, response_consumer, context):
-    if self._pool is None:
-      self._test_method.service(
-          request, response_consumer, context, self._control)
-    else:
-      self._pool.submit(
-          self._test_method.service, request, response_consumer, context,
-          self._control)
+    def unary_stream_event(self, request, response_consumer, context):
+        if self._pool is None:
+            self._test_method.service(request, response_consumer, context,
+                                      self._control)
+        else:
+            self._pool.submit(self._test_method.service, request,
+                              response_consumer, context, self._control)
 
 
 class _InlineStreamUnaryMethod(face.MethodImplementation):
 
-  def __init__(self, stream_unary_test_method, control):
-    self._test_method = stream_unary_test_method
-    self._control = control
+    def __init__(self, stream_unary_test_method, control):
+        self._test_method = stream_unary_test_method
+        self._control = control
 
-    self.cardinality = cardinality.Cardinality.STREAM_UNARY
-    self.style = style.Service.INLINE
+        self.cardinality = cardinality.Cardinality.STREAM_UNARY
+        self.style = style.Service.INLINE
 
-  def stream_unary_inline(self, request_iterator, context):
-    response_list = []
-    request_consumer = self._test_method.service(
-        response_list.append, context, self._control)
-    for request in request_iterator:
-      request_consumer.consume(request)
-    request_consumer.terminate()
-    return response_list.pop(0)
+    def stream_unary_inline(self, request_iterator, context):
+        response_list = []
+        request_consumer = self._test_method.service(response_list.append,
+                                                     context, self._control)
+        for request in request_iterator:
+            request_consumer.consume(request)
+        request_consumer.terminate()
+        return response_list.pop(0)
 
 
 class _EventStreamUnaryMethod(face.MethodImplementation):
 
-  def __init__(self, stream_unary_test_method, control, pool):
-    self._test_method = stream_unary_test_method
-    self._control = control
-    self._pool = pool
+    def __init__(self, stream_unary_test_method, control, pool):
+        self._test_method = stream_unary_test_method
+        self._control = control
+        self._pool = pool
 
-    self.cardinality = cardinality.Cardinality.STREAM_UNARY
-    self.style = style.Service.EVENT
+        self.cardinality = cardinality.Cardinality.STREAM_UNARY
+        self.style = style.Service.EVENT
 
-  def stream_unary_event(self, response_callback, context):
-    request_consumer = self._test_method.service(
-        response_callback, context, self._control)
-    if self._pool is None:
-      return request_consumer
-    else:
-      return stream_util.ThreadSwitchingConsumer(request_consumer, self._pool)
+    def stream_unary_event(self, response_callback, context):
+        request_consumer = self._test_method.service(response_callback, context,
+                                                     self._control)
+        if self._pool is None:
+            return request_consumer
+        else:
+            return stream_util.ThreadSwitchingConsumer(request_consumer,
+                                                       self._pool)
 
 
 class _InlineStreamStreamMethod(face.MethodImplementation):
 
-  def __init__(self, stream_stream_test_method, control):
-    self._test_method = stream_stream_test_method
-    self._control = control
+    def __init__(self, stream_stream_test_method, control):
+        self._test_method = stream_stream_test_method
+        self._control = control
 
-    self.cardinality = cardinality.Cardinality.STREAM_STREAM
-    self.style = style.Service.INLINE
+        self.cardinality = cardinality.Cardinality.STREAM_STREAM
+        self.style = style.Service.INLINE
 
-  def stream_stream_inline(self, request_iterator, context):
-    response_consumer = _BufferingConsumer()
-    request_consumer = self._test_method.service(
-        response_consumer, context, self._control)
+    def stream_stream_inline(self, request_iterator, context):
+        response_consumer = _BufferingConsumer()
+        request_consumer = self._test_method.service(response_consumer, context,
+                                                     self._control)
 
-    for request in request_iterator:
-      request_consumer.consume(request)
-      while response_consumer.consumed:
-        yield response_consumer.consumed.pop(0)
-    response_consumer.terminate()
+        for request in request_iterator:
+            request_consumer.consume(request)
+            while response_consumer.consumed:
+                yield response_consumer.consumed.pop(0)
+        response_consumer.terminate()
 
 
 class _EventStreamStreamMethod(face.MethodImplementation):
 
-  def __init__(self, stream_stream_test_method, control, pool):
-    self._test_method = stream_stream_test_method
-    self._control = control
-    self._pool = pool
+    def __init__(self, stream_stream_test_method, control, pool):
+        self._test_method = stream_stream_test_method
+        self._control = control
+        self._pool = pool
 
-    self.cardinality = cardinality.Cardinality.STREAM_STREAM
-    self.style = style.Service.EVENT
+        self.cardinality = cardinality.Cardinality.STREAM_STREAM
+        self.style = style.Service.EVENT
 
-  def stream_stream_event(self, response_consumer, context):
-    request_consumer = self._test_method.service(
-        response_consumer, context, self._control)
-    if self._pool is None:
-      return request_consumer
-    else:
-      return stream_util.ThreadSwitchingConsumer(request_consumer, self._pool)
+    def stream_stream_event(self, response_consumer, context):
+        request_consumer = self._test_method.service(response_consumer, context,
+                                                     self._control)
+        if self._pool is None:
+            return request_consumer
+        else:
+            return stream_util.ThreadSwitchingConsumer(request_consumer,
+                                                       self._pool)
 
 
 class _UnaryConsumer(stream.Consumer):
-  """A Consumer that only allows consumption of exactly one value."""
-
-  def __init__(self, action):
-    self._lock = threading.Lock()
-    self._action = action
-    self._consumed = False
-    self._terminated = False
-
-  def consume(self, value):
-    with self._lock:
-      if self._consumed:
-        raise ValueError('Unary consumer already consumed!')
-      elif self._terminated:
-        raise ValueError('Unary consumer already terminated!')
-      else:
-        self._consumed = True
-
-    self._action(value)
-
-  def terminate(self):
-    with self._lock:
-      if not self._consumed:
-        raise ValueError('Unary consumer hasn\'t yet consumed!')
-      elif self._terminated:
-        raise ValueError('Unary consumer already terminated!')
-      else:
-        self._terminated = True
-
-  def consume_and_terminate(self, value):
-    with self._lock:
-      if self._consumed:
-        raise ValueError('Unary consumer already consumed!')
-      elif self._terminated:
-        raise ValueError('Unary consumer already terminated!')
-      else:
-        self._consumed = True
-        self._terminated = True
-
-    self._action(value)
+    """A Consumer that only allows consumption of exactly one value."""
+
+    def __init__(self, action):
+        self._lock = threading.Lock()
+        self._action = action
+        self._consumed = False
+        self._terminated = False
+
+    def consume(self, value):
+        with self._lock:
+            if self._consumed:
+                raise ValueError('Unary consumer already consumed!')
+            elif self._terminated:
+                raise ValueError('Unary consumer already terminated!')
+            else:
+                self._consumed = True
+
+        self._action(value)
+
+    def terminate(self):
+        with self._lock:
+            if not self._consumed:
+                raise ValueError('Unary consumer hasn\'t yet consumed!')
+            elif self._terminated:
+                raise ValueError('Unary consumer already terminated!')
+            else:
+                self._terminated = True
+
+    def consume_and_terminate(self, value):
+        with self._lock:
+            if self._consumed:
+                raise ValueError('Unary consumer already consumed!')
+            elif self._terminated:
+                raise ValueError('Unary consumer already terminated!')
+            else:
+                self._consumed = True
+                self._terminated = True
+
+        self._action(value)
 
 
 class _UnaryUnaryAdaptation(object):
 
-  def __init__(self, unary_unary_test_method):
-    self._method = unary_unary_test_method
+    def __init__(self, unary_unary_test_method):
+        self._method = unary_unary_test_method
+
+    def service(self, response_consumer, context, control):
+
+        def action(request):
+            self._method.service(request,
+                                 response_consumer.consume_and_terminate,
+                                 context, control)
 
-  def service(self, response_consumer, context, control):
-    def action(request):
-      self._method.service(
-          request, response_consumer.consume_and_terminate, context, control)
-    return _UnaryConsumer(action)
+        return _UnaryConsumer(action)
 
 
 class _UnaryStreamAdaptation(object):
 
-  def __init__(self, unary_stream_test_method):
-    self._method = unary_stream_test_method
+    def __init__(self, unary_stream_test_method):
+        self._method = unary_stream_test_method
+
+    def service(self, response_consumer, context, control):
+
+        def action(request):
+            self._method.service(request, response_consumer, context, control)
 
-  def service(self, response_consumer, context, control):
-    def action(request):
-      self._method.service(request, response_consumer, context, control)
-    return _UnaryConsumer(action)
+        return _UnaryConsumer(action)
 
 
 class _StreamUnaryAdaptation(object):
 
-  def __init__(self, stream_unary_test_method):
-    self._method = stream_unary_test_method
+    def __init__(self, stream_unary_test_method):
+        self._method = stream_unary_test_method
 
-  def service(self, response_consumer, context, control):
-    return self._method.service(
-        response_consumer.consume_and_terminate, context, control)
+    def service(self, response_consumer, context, control):
+        return self._method.service(response_consumer.consume_and_terminate,
+                                    context, control)
 
 
 class _MultiMethodImplementation(face.MultiMethodImplementation):
 
-  def __init__(self, methods, control, pool):
-    self._methods = methods
-    self._control = control
-    self._pool = pool
+    def __init__(self, methods, control, pool):
+        self._methods = methods
+        self._control = control
+        self._pool = pool
 
-  def service(self, group, name, response_consumer, context):
-    method = self._methods.get(group, name, None)
-    if method is None:
-      raise face.NoSuchMethodError(group, name)
-    elif self._pool is None:
-      return method(response_consumer, context, self._control)
-    else:
-      request_consumer = method(response_consumer, context, self._control)
-      return stream_util.ThreadSwitchingConsumer(request_consumer, self._pool)
+    def service(self, group, name, response_consumer, context):
+        method = self._methods.get(group, name, None)
+        if method is None:
+            raise face.NoSuchMethodError(group, name)
+        elif self._pool is None:
+            return method(response_consumer, context, self._control)
+        else:
+            request_consumer = method(response_consumer, context, self._control)
+            return stream_util.ThreadSwitchingConsumer(request_consumer,
+                                                       self._pool)
 
 
 class _Assembly(
-    collections.namedtuple(
-        '_Assembly',
-        ['methods', 'inlines', 'events', 'adaptations', 'messages'])):
-  """An intermediate structure created when creating a TestServiceDigest."""
-
-
-def _assemble(
-    scenarios, identifiers, inline_method_constructor, event_method_constructor,
-    adapter, control, pool):
-  """Creates an _Assembly from the given scenarios."""
-  methods = {}
-  inlines = {}
-  events = {}
-  adaptations = {}
-  messages = {}
-  for identifier, scenario in six.iteritems(scenarios):
-    if identifier in identifiers:
-      raise ValueError('Repeated identifier "(%s, %s)"!' % identifier)
-
-    test_method = scenario[0]
-    inline_method = inline_method_constructor(test_method, control)
-    event_method = event_method_constructor(test_method, control, pool)
-    adaptation = adapter(test_method)
-
-    methods[identifier] = test_method
-    inlines[identifier] = inline_method
-    events[identifier] = event_method
-    adaptations[identifier] = adaptation
-    messages[identifier] = scenario[1]
-
-  return _Assembly(methods, inlines, events, adaptations, messages)
+        collections.namedtuple(
+            '_Assembly',
+            ['methods', 'inlines', 'events', 'adaptations', 'messages'])):
+    """An intermediate structure created when creating a TestServiceDigest."""
+
+
+def _assemble(scenarios, identifiers, inline_method_constructor,
+              event_method_constructor, adapter, control, pool):
+    """Creates an _Assembly from the given scenarios."""
+    methods = {}
+    inlines = {}
+    events = {}
+    adaptations = {}
+    messages = {}
+    for identifier, scenario in six.iteritems(scenarios):
+        if identifier in identifiers:
+            raise ValueError('Repeated identifier "(%s, %s)"!' % identifier)
+
+        test_method = scenario[0]
+        inline_method = inline_method_constructor(test_method, control)
+        event_method = event_method_constructor(test_method, control, pool)
+        adaptation = adapter(test_method)
+
+        methods[identifier] = test_method
+        inlines[identifier] = inline_method
+        events[identifier] = event_method
+        adaptations[identifier] = adaptation
+        messages[identifier] = scenario[1]
+
+    return _Assembly(methods, inlines, events, adaptations, messages)
 
 
 def digest(service, control, pool):
-  """Creates a TestServiceDigest from a TestService.
+    """Creates a TestServiceDigest from a TestService.
 
   Args:
     service: A _service.TestService.
@@ -396,51 +399,48 @@ def digest(service, control, pool):
   Returns:
     A TestServiceDigest synthesized from the given service.TestService.
   """
-  identifiers = set()
-
-  unary_unary = _assemble(
-      service.unary_unary_scenarios(), identifiers, _InlineUnaryUnaryMethod,
-      _EventUnaryUnaryMethod, _UnaryUnaryAdaptation, control, pool)
-  identifiers.update(unary_unary.inlines)
-
-  unary_stream = _assemble(
-      service.unary_stream_scenarios(), identifiers, _InlineUnaryStreamMethod,
-      _EventUnaryStreamMethod, _UnaryStreamAdaptation, control, pool)
-  identifiers.update(unary_stream.inlines)
-
-  stream_unary = _assemble(
-      service.stream_unary_scenarios(), identifiers, _InlineStreamUnaryMethod,
-      _EventStreamUnaryMethod, _StreamUnaryAdaptation, control, pool)
-  identifiers.update(stream_unary.inlines)
-
-  stream_stream = _assemble(
-      service.stream_stream_scenarios(), identifiers, _InlineStreamStreamMethod,
-      _EventStreamStreamMethod, _IDENTITY, control, pool)
-  identifiers.update(stream_stream.inlines)
-
-  methods = dict(unary_unary.methods)
-  methods.update(unary_stream.methods)
-  methods.update(stream_unary.methods)
-  methods.update(stream_stream.methods)
-  adaptations = dict(unary_unary.adaptations)
-  adaptations.update(unary_stream.adaptations)
-  adaptations.update(stream_unary.adaptations)
-  adaptations.update(stream_stream.adaptations)
-  inlines = dict(unary_unary.inlines)
-  inlines.update(unary_stream.inlines)
-  inlines.update(stream_unary.inlines)
-  inlines.update(stream_stream.inlines)
-  events = dict(unary_unary.events)
-  events.update(unary_stream.events)
-  events.update(stream_unary.events)
-  events.update(stream_stream.events)
-
-  return TestServiceDigest(
-      methods,
-      inlines,
-      events,
-      _MultiMethodImplementation(adaptations, control, pool),
-      unary_unary.messages,
-      unary_stream.messages,
-      stream_unary.messages,
-      stream_stream.messages)
+    identifiers = set()
+
+    unary_unary = _assemble(service.unary_unary_scenarios(), identifiers,
+                            _InlineUnaryUnaryMethod, _EventUnaryUnaryMethod,
+                            _UnaryUnaryAdaptation, control, pool)
+    identifiers.update(unary_unary.inlines)
+
+    unary_stream = _assemble(service.unary_stream_scenarios(), identifiers,
+                             _InlineUnaryStreamMethod, _EventUnaryStreamMethod,
+                             _UnaryStreamAdaptation, control, pool)
+    identifiers.update(unary_stream.inlines)
+
+    stream_unary = _assemble(service.stream_unary_scenarios(), identifiers,
+                             _InlineStreamUnaryMethod, _EventStreamUnaryMethod,
+                             _StreamUnaryAdaptation, control, pool)
+    identifiers.update(stream_unary.inlines)
+
+    stream_stream = _assemble(service.stream_stream_scenarios(), identifiers,
+                              _InlineStreamStreamMethod,
+                              _EventStreamStreamMethod, _IDENTITY, control,
+                              pool)
+    identifiers.update(stream_stream.inlines)
+
+    methods = dict(unary_unary.methods)
+    methods.update(unary_stream.methods)
+    methods.update(stream_unary.methods)
+    methods.update(stream_stream.methods)
+    adaptations = dict(unary_unary.adaptations)
+    adaptations.update(unary_stream.adaptations)
+    adaptations.update(stream_unary.adaptations)
+    adaptations.update(stream_stream.adaptations)
+    inlines = dict(unary_unary.inlines)
+    inlines.update(unary_stream.inlines)
+    inlines.update(stream_unary.inlines)
+    inlines.update(stream_stream.inlines)
+    events = dict(unary_unary.events)
+    events.update(unary_stream.events)
+    events.update(stream_unary.events)
+    events.update(stream_stream.events)
+
+    return TestServiceDigest(
+        methods, inlines, events,
+        _MultiMethodImplementation(adaptations, control, pool),
+        unary_unary.messages, unary_stream.messages, stream_unary.messages,
+        stream_stream.messages)
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py
index df620b19ba5b756f428de783a828bacdc1325593..703eef3a82c41b074c06960d353863adc4360f56 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Test code for the Face layer of RPC Framework."""
 
 from __future__ import division
@@ -55,457 +54,470 @@ from tests.unit.framework.interfaces.face import test_interfaces  # pylint: disa
 
 class _PauseableIterator(object):
 
-  def __init__(self, upstream):
-    self._upstream = upstream
-    self._condition = threading.Condition()
-    self._paused = False
+    def __init__(self, upstream):
+        self._upstream = upstream
+        self._condition = threading.Condition()
+        self._paused = False
 
-  @contextlib.contextmanager
-  def pause(self):
-    with self._condition:
-      self._paused = True
-    yield
-    with self._condition:
-      self._paused = False
-      self._condition.notify_all()
+    @contextlib.contextmanager
+    def pause(self):
+        with self._condition:
+            self._paused = True
+        yield
+        with self._condition:
+            self._paused = False
+            self._condition.notify_all()
 
-  def __iter__(self):
-    return self
+    def __iter__(self):
+        return self
 
-  def __next__(self):
-    return self.next()
+    def __next__(self):
+        return self.next()
 
-  def next(self):
-    with self._condition:
-      while self._paused:
-        self._condition.wait()
-    return next(self._upstream)
+    def next(self):
+        with self._condition:
+            while self._paused:
+                self._condition.wait()
+        return next(self._upstream)
 
 
 class _Callback(object):
 
-  def __init__(self):
-    self._condition = threading.Condition()
-    self._called = False
-    self._passed_future = None
-    self._passed_other_stuff = None
-
-  def __call__(self, *args, **kwargs):
-    with self._condition:
-      self._called = True
-      if args:
-        self._passed_future = args[0]
-      if 1 < len(args) or kwargs:
-        self._passed_other_stuff = tuple(args[1:]), dict(kwargs)
-      self._condition.notify_all()
-
-  def future(self):
-    with self._condition:
-      while True:
-        if self._passed_other_stuff is not None:
-          raise ValueError(
-              'Test callback passed unexpected values: %s',
-              self._passed_other_stuff)
-        elif self._called:
-          return self._passed_future
-        else:
-          self._condition.wait()
-
-
-class TestCase(six.with_metaclass(abc.ABCMeta, test_coverage.Coverage, unittest.TestCase)):
-  """A test of the Face layer of RPC Framework.
+    def __init__(self):
+        self._condition = threading.Condition()
+        self._called = False
+        self._passed_future = None
+        self._passed_other_stuff = None
+
+    def __call__(self, *args, **kwargs):
+        with self._condition:
+            self._called = True
+            if args:
+                self._passed_future = args[0]
+            if 1 < len(args) or kwargs:
+                self._passed_other_stuff = tuple(args[1:]), dict(kwargs)
+            self._condition.notify_all()
+
+    def future(self):
+        with self._condition:
+            while True:
+                if self._passed_other_stuff is not None:
+                    raise ValueError(
+                        'Test callback passed unexpected values: %s',
+                        self._passed_other_stuff)
+                elif self._called:
+                    return self._passed_future
+                else:
+                    self._condition.wait()
+
+
+class TestCase(
+        six.with_metaclass(abc.ABCMeta, test_coverage.Coverage,
+                           unittest.TestCase)):
+    """A test of the Face layer of RPC Framework.
 
   Concrete subclasses must have an "implementation" attribute of type
   test_interfaces.Implementation and an "invoker_constructor" attribute of type
   _invocation.InvokerConstructor.
   """
 
-  NAME = 'FutureInvocationAsynchronousEventServiceTest'
+    NAME = 'FutureInvocationAsynchronousEventServiceTest'
 
-  def setUp(self):
-    """See unittest.TestCase.setUp for full specification.
+    def setUp(self):
+        """See unittest.TestCase.setUp for full specification.
 
     Overriding implementations must call this implementation.
     """
-    self._control = test_control.PauseFailControl()
-    self._digest_pool = logging_pool.pool(test_constants.POOL_SIZE)
-    self._digest = _digest.digest(
-        _stock_service.STOCK_TEST_SERVICE, self._control, self._digest_pool)
+        self._control = test_control.PauseFailControl()
+        self._digest_pool = logging_pool.pool(test_constants.POOL_SIZE)
+        self._digest = _digest.digest(_stock_service.STOCK_TEST_SERVICE,
+                                      self._control, self._digest_pool)
 
-    generic_stub, dynamic_stubs, self._memo = self.implementation.instantiate(
-        self._digest.methods, self._digest.event_method_implementations, None)
-    self._invoker = self.invoker_constructor.construct_invoker(
-        generic_stub, dynamic_stubs, self._digest.methods)
+        generic_stub, dynamic_stubs, self._memo = self.implementation.instantiate(
+            self._digest.methods, self._digest.event_method_implementations,
+            None)
+        self._invoker = self.invoker_constructor.construct_invoker(
+            generic_stub, dynamic_stubs, self._digest.methods)
 
-  def tearDown(self):
-    """See unittest.TestCase.tearDown for full specification.
+    def tearDown(self):
+        """See unittest.TestCase.tearDown for full specification.
 
     Overriding implementations must call this implementation.
     """
-    self._invoker = None
-    self.implementation.destantiate(self._memo)
-    self._digest_pool.shutdown(wait=True)
-
-  def testSuccessfulUnaryRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-        callback = _Callback()
-
-        response_future = self._invoker.future(group, method)(
-            request, test_constants.LONG_TIMEOUT)
-        response_future.add_done_callback(callback)
-        response = response_future.result()
-
-        test_messages.verify(request, response, self)
-        self.assertIs(callback.future(), response_future)
-        self.assertIsNone(response_future.exception())
-        self.assertIsNone(response_future.traceback())
-
-  def testSuccessfulUnaryRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        response_iterator = self._invoker.future(group, method)(
-            request, test_constants.LONG_TIMEOUT)
-        responses = list(response_iterator)
-
-        test_messages.verify(request, responses, self)
-
-  def testSuccessfulStreamRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-        request_iterator = _PauseableIterator(iter(requests))
-        callback = _Callback()
-
-        # Use of a paused iterator of requests allows us to test that control is
-        # returned to calling code before the iterator yields any requests.
-        with request_iterator.pause():
-          response_future = self._invoker.future(group, method)(
-              request_iterator, test_constants.LONG_TIMEOUT)
-          response_future.add_done_callback(callback)
-        future_passed_to_callback = callback.future()
-        response = future_passed_to_callback.result()
-
-        test_messages.verify(requests, response, self)
-        self.assertIs(future_passed_to_callback, response_future)
-        self.assertIsNone(response_future.exception())
-        self.assertIsNone(response_future.traceback())
-
-  def testSuccessfulStreamRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-        request_iterator = _PauseableIterator(iter(requests))
-
-        # Use of a paused iterator of requests allows us to test that control is
-        # returned to calling code before the iterator yields any requests.
-        with request_iterator.pause():
-          response_iterator = self._invoker.future(group, method)(
-              request_iterator, test_constants.LONG_TIMEOUT)
-        responses = list(response_iterator)
-
-        test_messages.verify(requests, responses, self)
-
-  def testSequentialInvocations(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        first_request = test_messages.request()
-        second_request = test_messages.request()
-
-        first_response_future = self._invoker.future(group, method)(
-            first_request, test_constants.LONG_TIMEOUT)
-        first_response = first_response_future.result()
-
-        test_messages.verify(first_request, first_response, self)
-
-        second_response_future = self._invoker.future(group, method)(
-            second_request, test_constants.LONG_TIMEOUT)
-        second_response = second_response_future.result()
-
-        test_messages.verify(second_request, second_response, self)
-
-  def testParallelInvocations(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        first_request = test_messages.request()
-        second_request = test_messages.request()
-
-        first_response_future = self._invoker.future(group, method)(
-            first_request, test_constants.LONG_TIMEOUT)
-        second_response_future = self._invoker.future(group, method)(
-            second_request, test_constants.LONG_TIMEOUT)
-        first_response = first_response_future.result()
-        second_response = second_response_future.result()
-
-        test_messages.verify(first_request, first_response, self)
-        test_messages.verify(second_request, second_response, self)
-
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = []
-        response_futures = []
-        for _ in range(test_constants.THREAD_CONCURRENCY):
-          request = test_messages.request()
-          response_future = self._invoker.future(group, method)(
-              request, test_constants.LONG_TIMEOUT)
-          requests.append(request)
-          response_futures.append(response_future)
-
-        responses = [
-            response_future.result() for response_future in response_futures]
-
-        for request, response in zip(requests, responses):
-          test_messages.verify(request, response, self)
-
-  def testWaitingForSomeButNotAllParallelInvocations(self):
-    pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = []
-        response_futures_to_indices = {}
-        for index in range(test_constants.THREAD_CONCURRENCY):
-          request = test_messages.request()
-          inner_response_future = self._invoker.future(group, method)(
-              request, test_constants.LONG_TIMEOUT)
-          outer_response_future = pool.submit(inner_response_future.result)
-          requests.append(request)
-          response_futures_to_indices[outer_response_future] = index
-
-        some_completed_response_futures_iterator = itertools.islice(
-            futures.as_completed(response_futures_to_indices),
-            test_constants.THREAD_CONCURRENCY // 2)
-        for response_future in some_completed_response_futures_iterator:
-          index = response_futures_to_indices[response_future]
-          test_messages.verify(requests[index], response_future.result(), self)
-    pool.shutdown(wait=True)
-
-  def testCancelledUnaryRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-        callback = _Callback()
-
-        with self._control.pause():
-          response_future = self._invoker.future(group, method)(
-              request, test_constants.LONG_TIMEOUT)
-          response_future.add_done_callback(callback)
-          cancel_method_return_value = response_future.cancel()
-
-        self.assertIs(callback.future(), response_future)
-        self.assertFalse(cancel_method_return_value)
-        self.assertTrue(response_future.cancelled())
-        with self.assertRaises(future.CancelledError):
-          response_future.result()
-        with self.assertRaises(future.CancelledError):
-          response_future.exception()
-        with self.assertRaises(future.CancelledError):
-          response_future.traceback()
-
-  def testCancelledUnaryRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        with self._control.pause():
-          response_iterator = self._invoker.future(group, method)(
-              request, test_constants.LONG_TIMEOUT)
-          response_iterator.cancel()
-
-        with self.assertRaises(face.CancellationError):
-          next(response_iterator)
-
-  def testCancelledStreamRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-        callback = _Callback()
-
-        with self._control.pause():
-          response_future = self._invoker.future(group, method)(
-              iter(requests), test_constants.LONG_TIMEOUT)
-          response_future.add_done_callback(callback)
-          cancel_method_return_value = response_future.cancel()
-
-        self.assertIs(callback.future(), response_future)
-        self.assertFalse(cancel_method_return_value)
-        self.assertTrue(response_future.cancelled())
-        with self.assertRaises(future.CancelledError):
-          response_future.result()
-        with self.assertRaises(future.CancelledError):
-          response_future.exception()
-        with self.assertRaises(future.CancelledError):
-          response_future.traceback()
-
-  def testCancelledStreamRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-
-        with self._control.pause():
-          response_iterator = self._invoker.future(group, method)(
-              iter(requests), test_constants.LONG_TIMEOUT)
-          response_iterator.cancel()
-
-        with self.assertRaises(face.CancellationError):
-          next(response_iterator)
-
-  def testExpiredUnaryRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-        callback = _Callback()
-
-        with self._control.pause():
-          response_future = self._invoker.future(
-              group, method)(request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          response_future.add_done_callback(callback)
-          self.assertIs(callback.future(), response_future)
-          self.assertIsInstance(
-              response_future.exception(), face.ExpirationError)
-          with self.assertRaises(face.ExpirationError):
-            response_future.result()
-          self.assertIsInstance(
-              response_future.exception(), face.AbortionError)
-          self.assertIsNotNone(response_future.traceback())
-
-  def testExpiredUnaryRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        with self._control.pause():
-          response_iterator = self._invoker.future(group, method)(
-              request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          with self.assertRaises(face.ExpirationError):
-            list(response_iterator)
-
-  def testExpiredStreamRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-        callback = _Callback()
-
-        with self._control.pause():
-          response_future = self._invoker.future(group, method)(
-              iter(requests), _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          response_future.add_done_callback(callback)
-          self.assertIs(callback.future(), response_future)
-          self.assertIsInstance(
-              response_future.exception(), face.ExpirationError)
-          with self.assertRaises(face.ExpirationError):
-            response_future.result()
-          self.assertIsInstance(
-              response_future.exception(), face.AbortionError)
-          self.assertIsNotNone(response_future.traceback())
-
-  def testExpiredStreamRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-
-        with self._control.pause():
-          response_iterator = self._invoker.future(group, method)(
-              iter(requests), _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          with self.assertRaises(face.ExpirationError):
-            list(response_iterator)
-
-  def testFailedUnaryRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-        callback = _Callback()
-        abortion_callback = _Callback()
-
-        with self._control.fail():
-          response_future = self._invoker.future(group, method)(
-              request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          response_future.add_done_callback(callback)
-          response_future.add_abortion_callback(abortion_callback)
-
-          self.assertIs(callback.future(), response_future)
-          # Because the servicer fails outside of the thread from which the
-          # servicer-side runtime called into it its failure is
-          # indistinguishable from simply not having called its
-          # response_callback before the expiration of the RPC.
-          self.assertIsInstance(
-              response_future.exception(), face.ExpirationError)
-          with self.assertRaises(face.ExpirationError):
-            response_future.result()
-          self.assertIsNotNone(response_future.traceback())
-          self.assertIsNotNone(abortion_callback.future())
-
-  def testFailedUnaryRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.unary_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        request = test_messages.request()
-
-        # Because the servicer fails outside of the thread from which the
-        # servicer-side runtime called into it its failure is indistinguishable
-        # from simply not having called its response_consumer before the
-        # expiration of the RPC.
-        with self._control.fail(), self.assertRaises(face.ExpirationError):
-          response_iterator = self._invoker.future(group, method)(
-              request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          list(response_iterator)
-
-  def testFailedStreamRequestUnaryResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_unary_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-        callback = _Callback()
-        abortion_callback = _Callback()
-
-        with self._control.fail():
-          response_future = self._invoker.future(group, method)(
-              iter(requests), _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          response_future.add_done_callback(callback)
-          response_future.add_abortion_callback(abortion_callback)
-
-          self.assertIs(callback.future(), response_future)
-          # Because the servicer fails outside of the thread from which the
-          # servicer-side runtime called into it its failure is
-          # indistinguishable from simply not having called its
-          # response_callback before the expiration of the RPC.
-          self.assertIsInstance(
-              response_future.exception(), face.ExpirationError)
-          with self.assertRaises(face.ExpirationError):
-            response_future.result()
-          self.assertIsNotNone(response_future.traceback())
-          self.assertIsNotNone(abortion_callback.future())
-
-  def testFailedStreamRequestStreamResponse(self):
-    for (group, method), test_messages_sequence in (
-        six.iteritems(self._digest.stream_stream_messages_sequences)):
-      for test_messages in test_messages_sequence:
-        requests = test_messages.requests()
-
-        # Because the servicer fails outside of the thread from which the
-        # servicer-side runtime called into it its failure is indistinguishable
-        # from simply not having called its response_consumer before the
-        # expiration of the RPC.
-        with self._control.fail(), self.assertRaises(face.ExpirationError):
-          response_iterator = self._invoker.future(group, method)(
-              iter(requests), _3069_test_constant.REALLY_SHORT_TIMEOUT)
-          list(response_iterator)
+        self._invoker = None
+        self.implementation.destantiate(self._memo)
+        self._digest_pool.shutdown(wait=True)
+
+    def testSuccessfulUnaryRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+                callback = _Callback()
+
+                response_future = self._invoker.future(group, method)(
+                    request, test_constants.LONG_TIMEOUT)
+                response_future.add_done_callback(callback)
+                response = response_future.result()
+
+                test_messages.verify(request, response, self)
+                self.assertIs(callback.future(), response_future)
+                self.assertIsNone(response_future.exception())
+                self.assertIsNone(response_future.traceback())
+
+    def testSuccessfulUnaryRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                response_iterator = self._invoker.future(group, method)(
+                    request, test_constants.LONG_TIMEOUT)
+                responses = list(response_iterator)
+
+                test_messages.verify(request, responses, self)
+
+    def testSuccessfulStreamRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+                request_iterator = _PauseableIterator(iter(requests))
+                callback = _Callback()
+
+                # Use of a paused iterator of requests allows us to test that control is
+                # returned to calling code before the iterator yields any requests.
+                with request_iterator.pause():
+                    response_future = self._invoker.future(group, method)(
+                        request_iterator, test_constants.LONG_TIMEOUT)
+                    response_future.add_done_callback(callback)
+                future_passed_to_callback = callback.future()
+                response = future_passed_to_callback.result()
+
+                test_messages.verify(requests, response, self)
+                self.assertIs(future_passed_to_callback, response_future)
+                self.assertIsNone(response_future.exception())
+                self.assertIsNone(response_future.traceback())
+
+    def testSuccessfulStreamRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+                request_iterator = _PauseableIterator(iter(requests))
+
+                # Use of a paused iterator of requests allows us to test that control is
+                # returned to calling code before the iterator yields any requests.
+                with request_iterator.pause():
+                    response_iterator = self._invoker.future(group, method)(
+                        request_iterator, test_constants.LONG_TIMEOUT)
+                responses = list(response_iterator)
+
+                test_messages.verify(requests, responses, self)
+
+    def testSequentialInvocations(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                first_request = test_messages.request()
+                second_request = test_messages.request()
+
+                first_response_future = self._invoker.future(group, method)(
+                    first_request, test_constants.LONG_TIMEOUT)
+                first_response = first_response_future.result()
+
+                test_messages.verify(first_request, first_response, self)
+
+                second_response_future = self._invoker.future(group, method)(
+                    second_request, test_constants.LONG_TIMEOUT)
+                second_response = second_response_future.result()
+
+                test_messages.verify(second_request, second_response, self)
+
+    def testParallelInvocations(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                first_request = test_messages.request()
+                second_request = test_messages.request()
+
+                first_response_future = self._invoker.future(group, method)(
+                    first_request, test_constants.LONG_TIMEOUT)
+                second_response_future = self._invoker.future(group, method)(
+                    second_request, test_constants.LONG_TIMEOUT)
+                first_response = first_response_future.result()
+                second_response = second_response_future.result()
+
+                test_messages.verify(first_request, first_response, self)
+                test_messages.verify(second_request, second_response, self)
+
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = []
+                response_futures = []
+                for _ in range(test_constants.THREAD_CONCURRENCY):
+                    request = test_messages.request()
+                    response_future = self._invoker.future(group, method)(
+                        request, test_constants.LONG_TIMEOUT)
+                    requests.append(request)
+                    response_futures.append(response_future)
+
+                responses = [
+                    response_future.result()
+                    for response_future in response_futures
+                ]
+
+                for request, response in zip(requests, responses):
+                    test_messages.verify(request, response, self)
+
+    def testWaitingForSomeButNotAllParallelInvocations(self):
+        pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = []
+                response_futures_to_indices = {}
+                for index in range(test_constants.THREAD_CONCURRENCY):
+                    request = test_messages.request()
+                    inner_response_future = self._invoker.future(group, method)(
+                        request, test_constants.LONG_TIMEOUT)
+                    outer_response_future = pool.submit(
+                        inner_response_future.result)
+                    requests.append(request)
+                    response_futures_to_indices[outer_response_future] = index
+
+                some_completed_response_futures_iterator = itertools.islice(
+                    futures.as_completed(response_futures_to_indices),
+                    test_constants.THREAD_CONCURRENCY // 2)
+                for response_future in some_completed_response_futures_iterator:
+                    index = response_futures_to_indices[response_future]
+                    test_messages.verify(requests[index],
+                                         response_future.result(), self)
+        pool.shutdown(wait=True)
+
+    def testCancelledUnaryRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+                callback = _Callback()
+
+                with self._control.pause():
+                    response_future = self._invoker.future(group, method)(
+                        request, test_constants.LONG_TIMEOUT)
+                    response_future.add_done_callback(callback)
+                    cancel_method_return_value = response_future.cancel()
+
+                self.assertIs(callback.future(), response_future)
+                self.assertFalse(cancel_method_return_value)
+                self.assertTrue(response_future.cancelled())
+                with self.assertRaises(future.CancelledError):
+                    response_future.result()
+                with self.assertRaises(future.CancelledError):
+                    response_future.exception()
+                with self.assertRaises(future.CancelledError):
+                    response_future.traceback()
+
+    def testCancelledUnaryRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                with self._control.pause():
+                    response_iterator = self._invoker.future(group, method)(
+                        request, test_constants.LONG_TIMEOUT)
+                    response_iterator.cancel()
+
+                with self.assertRaises(face.CancellationError):
+                    next(response_iterator)
+
+    def testCancelledStreamRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+                callback = _Callback()
+
+                with self._control.pause():
+                    response_future = self._invoker.future(group, method)(
+                        iter(requests), test_constants.LONG_TIMEOUT)
+                    response_future.add_done_callback(callback)
+                    cancel_method_return_value = response_future.cancel()
+
+                self.assertIs(callback.future(), response_future)
+                self.assertFalse(cancel_method_return_value)
+                self.assertTrue(response_future.cancelled())
+                with self.assertRaises(future.CancelledError):
+                    response_future.result()
+                with self.assertRaises(future.CancelledError):
+                    response_future.exception()
+                with self.assertRaises(future.CancelledError):
+                    response_future.traceback()
+
+    def testCancelledStreamRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+
+                with self._control.pause():
+                    response_iterator = self._invoker.future(group, method)(
+                        iter(requests), test_constants.LONG_TIMEOUT)
+                    response_iterator.cancel()
+
+                with self.assertRaises(face.CancellationError):
+                    next(response_iterator)
+
+    def testExpiredUnaryRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+                callback = _Callback()
+
+                with self._control.pause():
+                    response_future = self._invoker.future(group, method)(
+                        request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    response_future.add_done_callback(callback)
+                    self.assertIs(callback.future(), response_future)
+                    self.assertIsInstance(response_future.exception(),
+                                          face.ExpirationError)
+                    with self.assertRaises(face.ExpirationError):
+                        response_future.result()
+                    self.assertIsInstance(response_future.exception(),
+                                          face.AbortionError)
+                    self.assertIsNotNone(response_future.traceback())
+
+    def testExpiredUnaryRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                with self._control.pause():
+                    response_iterator = self._invoker.future(group, method)(
+                        request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    with self.assertRaises(face.ExpirationError):
+                        list(response_iterator)
+
+    def testExpiredStreamRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+                callback = _Callback()
+
+                with self._control.pause():
+                    response_future = self._invoker.future(group, method)(
+                        iter(requests),
+                        _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    response_future.add_done_callback(callback)
+                    self.assertIs(callback.future(), response_future)
+                    self.assertIsInstance(response_future.exception(),
+                                          face.ExpirationError)
+                    with self.assertRaises(face.ExpirationError):
+                        response_future.result()
+                    self.assertIsInstance(response_future.exception(),
+                                          face.AbortionError)
+                    self.assertIsNotNone(response_future.traceback())
+
+    def testExpiredStreamRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+
+                with self._control.pause():
+                    response_iterator = self._invoker.future(group, method)(
+                        iter(requests),
+                        _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    with self.assertRaises(face.ExpirationError):
+                        list(response_iterator)
+
+    def testFailedUnaryRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+                callback = _Callback()
+                abortion_callback = _Callback()
+
+                with self._control.fail():
+                    response_future = self._invoker.future(group, method)(
+                        request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    response_future.add_done_callback(callback)
+                    response_future.add_abortion_callback(abortion_callback)
+
+                    self.assertIs(callback.future(), response_future)
+                    # Because the servicer fails outside of the thread from which the
+                    # servicer-side runtime called into it its failure is
+                    # indistinguishable from simply not having called its
+                    # response_callback before the expiration of the RPC.
+                    self.assertIsInstance(response_future.exception(),
+                                          face.ExpirationError)
+                    with self.assertRaises(face.ExpirationError):
+                        response_future.result()
+                    self.assertIsNotNone(response_future.traceback())
+                    self.assertIsNotNone(abortion_callback.future())
+
+    def testFailedUnaryRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.unary_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                request = test_messages.request()
+
+                # Because the servicer fails outside of the thread from which the
+                # servicer-side runtime called into it its failure is indistinguishable
+                # from simply not having called its response_consumer before the
+                # expiration of the RPC.
+                with self._control.fail(), self.assertRaises(
+                        face.ExpirationError):
+                    response_iterator = self._invoker.future(group, method)(
+                        request, _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    list(response_iterator)
+
+    def testFailedStreamRequestUnaryResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_unary_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+                callback = _Callback()
+                abortion_callback = _Callback()
+
+                with self._control.fail():
+                    response_future = self._invoker.future(group, method)(
+                        iter(requests),
+                        _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    response_future.add_done_callback(callback)
+                    response_future.add_abortion_callback(abortion_callback)
+
+                    self.assertIs(callback.future(), response_future)
+                    # Because the servicer fails outside of the thread from which the
+                    # servicer-side runtime called into it its failure is
+                    # indistinguishable from simply not having called its
+                    # response_callback before the expiration of the RPC.
+                    self.assertIsInstance(response_future.exception(),
+                                          face.ExpirationError)
+                    with self.assertRaises(face.ExpirationError):
+                        response_future.result()
+                    self.assertIsNotNone(response_future.traceback())
+                    self.assertIsNotNone(abortion_callback.future())
+
+    def testFailedStreamRequestStreamResponse(self):
+        for (group, method), test_messages_sequence in (
+                six.iteritems(self._digest.stream_stream_messages_sequences)):
+            for test_messages in test_messages_sequence:
+                requests = test_messages.requests()
+
+                # Because the servicer fails outside of the thread from which the
+                # servicer-side runtime called into it its failure is indistinguishable
+                # from simply not having called its response_consumer before the
+                # expiration of the RPC.
+                with self._control.fail(), self.assertRaises(
+                        face.ExpirationError):
+                    response_iterator = self._invoker.future(group, method)(
+                        iter(requests),
+                        _3069_test_constant.REALLY_SHORT_TIMEOUT)
+                    list(response_iterator)
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_invocation.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_invocation.py
index ac487bed4f928f063b05071079f0554558f25632..4e144a363527dc8f1a86c15dd915712ccded34af 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_invocation.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_invocation.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Coverage across the Face layer's generic-to-dynamic range for invocation."""
 
 import abc
@@ -65,149 +64,149 @@ _CARDINALITY_TO_MULTI_CALLABLE_ATTRIBUTE = {
 
 
 class Invoker(six.with_metaclass(abc.ABCMeta)):
-  """A type used to invoke test RPCs."""
+    """A type used to invoke test RPCs."""
 
-  @abc.abstractmethod
-  def blocking(self, group, name):
-    """Invokes an RPC with blocking control flow."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def blocking(self, group, name):
+        """Invokes an RPC with blocking control flow."""
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def future(self, group, name):
-    """Invokes an RPC with future control flow."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def future(self, group, name):
+        """Invokes an RPC with future control flow."""
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def event(self, group, name):
-    """Invokes an RPC with event control flow."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def event(self, group, name):
+        """Invokes an RPC with event control flow."""
+        raise NotImplementedError()
 
 
 class InvokerConstructor(six.with_metaclass(abc.ABCMeta)):
-  """A type used to create Invokers."""
+    """A type used to create Invokers."""
 
-  @abc.abstractmethod
-  def name(self):
-    """Specifies the name of the Invoker constructed by this object."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def name(self):
+        """Specifies the name of the Invoker constructed by this object."""
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def construct_invoker(self, generic_stub, dynamic_stubs, methods):
-    """Constructs an Invoker for the given stubs and methods."""
-    raise NotImplementedError()
+    @abc.abstractmethod
+    def construct_invoker(self, generic_stub, dynamic_stubs, methods):
+        """Constructs an Invoker for the given stubs and methods."""
+        raise NotImplementedError()
 
 
 class _GenericInvoker(Invoker):
 
-  def __init__(self, generic_stub, methods):
-    self._stub = generic_stub
-    self._methods = methods
+    def __init__(self, generic_stub, methods):
+        self._stub = generic_stub
+        self._methods = methods
 
-  def _behavior(self, group, name, cardinality_to_generic_method):
-    method_cardinality = self._methods[group, name].cardinality()
-    behavior = getattr(
-        self._stub, cardinality_to_generic_method[method_cardinality])
-    return lambda *args, **kwargs: behavior(group, name, *args, **kwargs)
+    def _behavior(self, group, name, cardinality_to_generic_method):
+        method_cardinality = self._methods[group, name].cardinality()
+        behavior = getattr(self._stub,
+                           cardinality_to_generic_method[method_cardinality])
+        return lambda *args, **kwargs: behavior(group, name, *args, **kwargs)
 
-  def blocking(self, group, name):
-    return self._behavior(
-        group, name, _CARDINALITY_TO_GENERIC_BLOCKING_BEHAVIOR)
+    def blocking(self, group, name):
+        return self._behavior(group, name,
+                              _CARDINALITY_TO_GENERIC_BLOCKING_BEHAVIOR)
 
-  def future(self, group, name):
-    return self._behavior(group, name, _CARDINALITY_TO_GENERIC_FUTURE_BEHAVIOR)
+    def future(self, group, name):
+        return self._behavior(group, name,
+                              _CARDINALITY_TO_GENERIC_FUTURE_BEHAVIOR)
 
-  def event(self, group, name):
-    return self._behavior(group, name, _CARDINALITY_TO_GENERIC_EVENT_BEHAVIOR)
+    def event(self, group, name):
+        return self._behavior(group, name,
+                              _CARDINALITY_TO_GENERIC_EVENT_BEHAVIOR)
 
 
 class _GenericInvokerConstructor(InvokerConstructor):
 
-  def name(self):
-    return 'GenericInvoker'
+    def name(self):
+        return 'GenericInvoker'
 
-  def construct_invoker(self, generic_stub, dynamic_stub, methods):
-    return _GenericInvoker(generic_stub, methods)
+    def construct_invoker(self, generic_stub, dynamic_stub, methods):
+        return _GenericInvoker(generic_stub, methods)
 
 
 class _MultiCallableInvoker(Invoker):
 
-  def __init__(self, generic_stub, methods):
-    self._stub = generic_stub
-    self._methods = methods
+    def __init__(self, generic_stub, methods):
+        self._stub = generic_stub
+        self._methods = methods
 
-  def _multi_callable(self, group, name):
-    method_cardinality = self._methods[group, name].cardinality()
-    behavior = getattr(
-        self._stub,
-        _CARDINALITY_TO_MULTI_CALLABLE_ATTRIBUTE[method_cardinality])
-    return behavior(group, name)
+    def _multi_callable(self, group, name):
+        method_cardinality = self._methods[group, name].cardinality()
+        behavior = getattr(
+            self._stub,
+            _CARDINALITY_TO_MULTI_CALLABLE_ATTRIBUTE[method_cardinality])
+        return behavior(group, name)
 
-  def blocking(self, group, name):
-    return self._multi_callable(group, name)
+    def blocking(self, group, name):
+        return self._multi_callable(group, name)
 
-  def future(self, group, name):
-    method_cardinality = self._methods[group, name].cardinality()
-    behavior = getattr(
-        self._stub,
-        _CARDINALITY_TO_MULTI_CALLABLE_ATTRIBUTE[method_cardinality])
-    if method_cardinality in (
-        cardinality.Cardinality.UNARY_UNARY,
-        cardinality.Cardinality.STREAM_UNARY):
-      return behavior(group, name).future
-    else:
-      return behavior(group, name)
+    def future(self, group, name):
+        method_cardinality = self._methods[group, name].cardinality()
+        behavior = getattr(
+            self._stub,
+            _CARDINALITY_TO_MULTI_CALLABLE_ATTRIBUTE[method_cardinality])
+        if method_cardinality in (cardinality.Cardinality.UNARY_UNARY,
+                                  cardinality.Cardinality.STREAM_UNARY):
+            return behavior(group, name).future
+        else:
+            return behavior(group, name)
 
-  def event(self, group, name):
-    return self._multi_callable(group, name).event
+    def event(self, group, name):
+        return self._multi_callable(group, name).event
 
 
 class _MultiCallableInvokerConstructor(InvokerConstructor):
 
-  def name(self):
-    return 'MultiCallableInvoker'
+    def name(self):
+        return 'MultiCallableInvoker'
 
-  def construct_invoker(self, generic_stub, dynamic_stub, methods):
-    return _MultiCallableInvoker(generic_stub, methods)
+    def construct_invoker(self, generic_stub, dynamic_stub, methods):
+        return _MultiCallableInvoker(generic_stub, methods)
 
 
 class _DynamicInvoker(Invoker):
 
-  def __init__(self, dynamic_stubs, methods):
-    self._stubs = dynamic_stubs
-    self._methods = methods
+    def __init__(self, dynamic_stubs, methods):
+        self._stubs = dynamic_stubs
+        self._methods = methods
 
-  def blocking(self, group, name):
-    return getattr(self._stubs[group], name)
+    def blocking(self, group, name):
+        return getattr(self._stubs[group], name)
 
-  def future(self, group, name):
-    if self._methods[group, name].cardinality() in (
-        cardinality.Cardinality.UNARY_UNARY,
-        cardinality.Cardinality.STREAM_UNARY):
-      return getattr(self._stubs[group], name).future
-    else:
-      return getattr(self._stubs[group], name)
+    def future(self, group, name):
+        if self._methods[group, name].cardinality() in (
+                cardinality.Cardinality.UNARY_UNARY,
+                cardinality.Cardinality.STREAM_UNARY):
+            return getattr(self._stubs[group], name).future
+        else:
+            return getattr(self._stubs[group], name)
 
-  def event(self, group, name):
-    return getattr(self._stubs[group], name).event
+    def event(self, group, name):
+        return getattr(self._stubs[group], name).event
 
 
 class _DynamicInvokerConstructor(InvokerConstructor):
 
-  def name(self):
-    return 'DynamicInvoker'
+    def name(self):
+        return 'DynamicInvoker'
 
-  def construct_invoker(self, generic_stub, dynamic_stubs, methods):
-    return _DynamicInvoker(dynamic_stubs, methods)
+    def construct_invoker(self, generic_stub, dynamic_stubs, methods):
+        return _DynamicInvoker(dynamic_stubs, methods)
 
 
 def invoker_constructors():
-  """Creates a sequence of InvokerConstructors to use in tests of RPCs.
+    """Creates a sequence of InvokerConstructors to use in tests of RPCs.
 
   Returns:
     A sequence of InvokerConstructors.
   """
-  return (
-      _GenericInvokerConstructor(),
-      _MultiCallableInvokerConstructor(),
-      _DynamicInvokerConstructor(),
-  )
+    return (
+        _GenericInvokerConstructor(),
+        _MultiCallableInvokerConstructor(),
+        _DynamicInvokerConstructor(),)
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_service.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_service.py
index f13dff0558571e194a2f3f77a79eabf7b5ce9c11..f14ac6a9871954c6f45c39e495169b4711cb0797 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_service.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_service.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Private interfaces implemented by data sets used in Face-layer tests."""
 
 import abc
@@ -38,12 +37,13 @@ from grpc.framework.interfaces.face import face  # pylint: disable=unused-import
 from tests.unit.framework.interfaces.face import test_interfaces
 
 
-class UnaryUnaryTestMethodImplementation(six.with_metaclass(abc.ABCMeta, test_interfaces.Method)):
-  """A controllable implementation of a unary-unary method."""
+class UnaryUnaryTestMethodImplementation(
+        six.with_metaclass(abc.ABCMeta, test_interfaces.Method)):
+    """A controllable implementation of a unary-unary method."""
 
-  @abc.abstractmethod
-  def service(self, request, response_callback, context, control):
-    """Services an RPC that accepts one message and produces one message.
+    @abc.abstractmethod
+    def service(self, request, response_callback, context, control):
+        """Services an RPC that accepts one message and produces one message.
 
     Args:
       request: The single request message for the RPC.
@@ -56,15 +56,15 @@ class UnaryUnaryTestMethodImplementation(six.with_metaclass(abc.ABCMeta, test_in
       abandonment.Abandoned: May or may not be raised when the RPC has been
         aborted.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class UnaryUnaryTestMessages(six.with_metaclass(abc.ABCMeta)):
-  """A type for unary-request-unary-response message pairings."""
+    """A type for unary-request-unary-response message pairings."""
 
-  @abc.abstractmethod
-  def request(self):
-    """Affords a request message.
+    @abc.abstractmethod
+    def request(self):
+        """Affords a request message.
 
     Implementations of this method should return a different message with each
     call so that multiple test executions of the test method may be made with
@@ -73,11 +73,11 @@ class UnaryUnaryTestMessages(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A request message.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def verify(self, request, response, test_case):
-    """Verifies that the computed response matches the given request.
+    @abc.abstractmethod
+    def verify(self, request, response, test_case):
+        """Verifies that the computed response matches the given request.
 
     Args:
       request: A request message.
@@ -88,15 +88,16 @@ class UnaryUnaryTestMessages(six.with_metaclass(abc.ABCMeta)):
       AssertionError: If the request and response do not match, indicating that
         there was some problem executing the RPC under test.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
-class UnaryStreamTestMethodImplementation(six.with_metaclass(abc.ABCMeta, test_interfaces.Method)):
-  """A controllable implementation of a unary-stream method."""
+class UnaryStreamTestMethodImplementation(
+        six.with_metaclass(abc.ABCMeta, test_interfaces.Method)):
+    """A controllable implementation of a unary-stream method."""
 
-  @abc.abstractmethod
-  def service(self, request, response_consumer, context, control):
-    """Services an RPC that takes one message and produces a stream of messages.
+    @abc.abstractmethod
+    def service(self, request, response_consumer, context, control):
+        """Services an RPC that takes one message and produces a stream of messages.
 
     Args:
       request: The single request message for the RPC.
@@ -109,15 +110,15 @@ class UnaryStreamTestMethodImplementation(six.with_metaclass(abc.ABCMeta, test_i
       abandonment.Abandoned: May or may not be raised when the RPC has been
         aborted.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class UnaryStreamTestMessages(six.with_metaclass(abc.ABCMeta)):
-  """A type for unary-request-stream-response message pairings."""
+    """A type for unary-request-stream-response message pairings."""
 
-  @abc.abstractmethod
-  def request(self):
-    """Affords a request message.
+    @abc.abstractmethod
+    def request(self):
+        """Affords a request message.
 
     Implementations of this method should return a different message with each
     call so that multiple test executions of the test method may be made with
@@ -126,11 +127,11 @@ class UnaryStreamTestMessages(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A request message.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def verify(self, request, responses, test_case):
-    """Verifies that the computed responses match the given request.
+    @abc.abstractmethod
+    def verify(self, request, responses, test_case):
+        """Verifies that the computed responses match the given request.
 
     Args:
       request: A request message.
@@ -141,15 +142,16 @@ class UnaryStreamTestMessages(six.with_metaclass(abc.ABCMeta)):
       AssertionError: If the request and responses do not match, indicating that
         there was some problem executing the RPC under test.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
-class StreamUnaryTestMethodImplementation(six.with_metaclass(abc.ABCMeta, test_interfaces.Method)):
-  """A controllable implementation of a stream-unary method."""
+class StreamUnaryTestMethodImplementation(
+        six.with_metaclass(abc.ABCMeta, test_interfaces.Method)):
+    """A controllable implementation of a stream-unary method."""
 
-  @abc.abstractmethod
-  def service(self, response_callback, context, control):
-    """Services an RPC that takes a stream of messages and produces one message.
+    @abc.abstractmethod
+    def service(self, response_callback, context, control):
+        """Services an RPC that takes a stream of messages and produces one message.
 
     Args:
       response_callback: A callback to be called to accept the response message
@@ -169,15 +171,15 @@ class StreamUnaryTestMethodImplementation(six.with_metaclass(abc.ABCMeta, test_i
       abandonment.Abandoned: May or may not be raised when the RPC has been
         aborted.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class StreamUnaryTestMessages(six.with_metaclass(abc.ABCMeta)):
-  """A type for stream-request-unary-response message pairings."""
+    """A type for stream-request-unary-response message pairings."""
 
-  @abc.abstractmethod
-  def requests(self):
-    """Affords a sequence of request messages.
+    @abc.abstractmethod
+    def requests(self):
+        """Affords a sequence of request messages.
 
     Implementations of this method should return a different sequences with each
     call so that multiple test executions of the test method may be made with
@@ -186,11 +188,11 @@ class StreamUnaryTestMessages(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A sequence of request messages.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def verify(self, requests, response, test_case):
-    """Verifies that the computed response matches the given requests.
+    @abc.abstractmethod
+    def verify(self, requests, response, test_case):
+        """Verifies that the computed response matches the given requests.
 
     Args:
       requests: A sequence of request messages.
@@ -201,15 +203,16 @@ class StreamUnaryTestMessages(six.with_metaclass(abc.ABCMeta)):
       AssertionError: If the requests and response do not match, indicating that
         there was some problem executing the RPC under test.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
-class StreamStreamTestMethodImplementation(six.with_metaclass(abc.ABCMeta, test_interfaces.Method)):
-  """A controllable implementation of a stream-stream method."""
+class StreamStreamTestMethodImplementation(
+        six.with_metaclass(abc.ABCMeta, test_interfaces.Method)):
+    """A controllable implementation of a stream-stream method."""
 
-  @abc.abstractmethod
-  def service(self, response_consumer, context, control):
-    """Services an RPC that accepts and produces streams of messages.
+    @abc.abstractmethod
+    def service(self, response_consumer, context, control):
+        """Services an RPC that accepts and produces streams of messages.
 
     Args:
       response_consumer: A stream.Consumer to be called to accept the response
@@ -229,15 +232,15 @@ class StreamStreamTestMethodImplementation(six.with_metaclass(abc.ABCMeta, test_
       abandonment.Abandoned: May or may not be raised when the RPC has been
         aborted.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class StreamStreamTestMessages(six.with_metaclass(abc.ABCMeta)):
-  """A type for stream-request-stream-response message pairings."""
+    """A type for stream-request-stream-response message pairings."""
 
-  @abc.abstractmethod
-  def requests(self):
-    """Affords a sequence of request messages.
+    @abc.abstractmethod
+    def requests(self):
+        """Affords a sequence of request messages.
 
     Implementations of this method should return a different sequences with each
     call so that multiple test executions of the test method may be made with
@@ -246,11 +249,11 @@ class StreamStreamTestMessages(six.with_metaclass(abc.ABCMeta)):
     Returns:
       A sequence of request messages.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def verify(self, requests, responses, test_case):
-    """Verifies that the computed response matches the given requests.
+    @abc.abstractmethod
+    def verify(self, requests, responses, test_case):
+        """Verifies that the computed response matches the given requests.
 
     Args:
       requests: A sequence of request messages.
@@ -261,15 +264,15 @@ class StreamStreamTestMessages(six.with_metaclass(abc.ABCMeta)):
       AssertionError: If the requests and responses do not match, indicating
         that there was some problem executing the RPC under test.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class TestService(six.with_metaclass(abc.ABCMeta)):
-  """A specification of implemented methods to use in tests."""
+    """A specification of implemented methods to use in tests."""
 
-  @abc.abstractmethod
-  def unary_unary_scenarios(self):
-    """Affords unary-request-unary-response test methods and their messages.
+    @abc.abstractmethod
+    def unary_unary_scenarios(self):
+        """Affords unary-request-unary-response test methods and their messages.
 
     Returns:
       A dict from method group-name pair to implementation/messages pair. The
@@ -277,11 +280,11 @@ class TestService(six.with_metaclass(abc.ABCMeta)):
         and the second element is a sequence of UnaryUnaryTestMethodMessages
         objects.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def unary_stream_scenarios(self):
-    """Affords unary-request-stream-response test methods and their messages.
+    @abc.abstractmethod
+    def unary_stream_scenarios(self):
+        """Affords unary-request-stream-response test methods and their messages.
 
     Returns:
       A dict from method group-name pair to implementation/messages pair. The
@@ -289,11 +292,11 @@ class TestService(six.with_metaclass(abc.ABCMeta)):
         object and the second element is a sequence of
         UnaryStreamTestMethodMessages objects.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stream_unary_scenarios(self):
-    """Affords stream-request-unary-response test methods and their messages.
+    @abc.abstractmethod
+    def stream_unary_scenarios(self):
+        """Affords stream-request-unary-response test methods and their messages.
 
     Returns:
       A dict from method group-name pair to implementation/messages pair. The
@@ -301,11 +304,11 @@ class TestService(six.with_metaclass(abc.ABCMeta)):
         object and the second element is a sequence of
         StreamUnaryTestMethodMessages objects.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def stream_stream_scenarios(self):
-    """Affords stream-request-stream-response test methods and their messages.
+    @abc.abstractmethod
+    def stream_stream_scenarios(self):
+        """Affords stream-request-stream-response test methods and their messages.
 
     Returns:
       A dict from method group-name pair to implementation/messages pair. The
@@ -313,4 +316,4 @@ class TestService(six.with_metaclass(abc.ABCMeta)):
         object and the second element is a sequence of
         StreamStreamTestMethodMessages objects.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_stock_service.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_stock_service.py
index 5299655bb3b03264cb619e970904f2c901612b4b..41a55c13f4dc4f083b19cf1af452b1f5a29d220e 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_stock_service.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_stock_service.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Examples of Python implementations of the stock.proto Stock service."""
 
 from grpc.framework.common import cardinality
@@ -44,353 +43,363 @@ _price = lambda symbol_name: float(hash(symbol_name) % 4096)
 
 
 def _get_last_trade_price(stock_request, stock_reply_callback, control, active):
-  """A unary-request, unary-response test method."""
-  control.control()
-  if active():
-    stock_reply_callback(
-        stock_pb2.StockReply(
-            symbol=stock_request.symbol, price=_price(stock_request.symbol)))
-  else:
-    raise abandonment.Abandoned()
-
-
-def _get_last_trade_price_multiple(stock_reply_consumer, control, active):
-  """A stream-request, stream-response test method."""
-  def stock_reply_for_stock_request(stock_request):
+    """A unary-request, unary-response test method."""
     control.control()
     if active():
-      return stock_pb2.StockReply(
-          symbol=stock_request.symbol, price=_price(stock_request.symbol))
+        stock_reply_callback(
+            stock_pb2.StockReply(
+                symbol=stock_request.symbol, price=_price(
+                    stock_request.symbol)))
     else:
-      raise abandonment.Abandoned()
-
-  class StockRequestConsumer(stream.Consumer):
+        raise abandonment.Abandoned()
 
-    def consume(self, stock_request):
-      stock_reply_consumer.consume(stock_reply_for_stock_request(stock_request))
 
-    def terminate(self):
-      control.control()
-      stock_reply_consumer.terminate()
+def _get_last_trade_price_multiple(stock_reply_consumer, control, active):
+    """A stream-request, stream-response test method."""
 
-    def consume_and_terminate(self, stock_request):
-      stock_reply_consumer.consume_and_terminate(
-          stock_reply_for_stock_request(stock_request))
+    def stock_reply_for_stock_request(stock_request):
+        control.control()
+        if active():
+            return stock_pb2.StockReply(
+                symbol=stock_request.symbol, price=_price(stock_request.symbol))
+        else:
+            raise abandonment.Abandoned()
 
-  return StockRequestConsumer()
+    class StockRequestConsumer(stream.Consumer):
 
+        def consume(self, stock_request):
+            stock_reply_consumer.consume(
+                stock_reply_for_stock_request(stock_request))
 
-def _watch_future_trades(stock_request, stock_reply_consumer, control, active):
-  """A unary-request, stream-response test method."""
-  base_price = _price(stock_request.symbol)
-  for index in range(stock_request.num_trades_to_watch):
-    control.control()
-    if active():
-      stock_reply_consumer.consume(
-          stock_pb2.StockReply(
-              symbol=stock_request.symbol, price=base_price + index))
-    else:
-      raise abandonment.Abandoned()
-  stock_reply_consumer.terminate()
+        def terminate(self):
+            control.control()
+            stock_reply_consumer.terminate()
 
+        def consume_and_terminate(self, stock_request):
+            stock_reply_consumer.consume_and_terminate(
+                stock_reply_for_stock_request(stock_request))
 
-def _get_highest_trade_price(stock_reply_callback, control, active):
-  """A stream-request, unary-response test method."""
+    return StockRequestConsumer()
 
-  class StockRequestConsumer(stream.Consumer):
-    """Keeps an ongoing record of the most valuable symbol yet consumed."""
 
-    def __init__(self):
-      self._symbol = None
-      self._price = None
-
-    def consume(self, stock_request):
-      control.control()
-      if active():
-        if self._price is None:
-          self._symbol = stock_request.symbol
-          self._price = _price(stock_request.symbol)
-        else:
-          candidate_price = _price(stock_request.symbol)
-          if self._price < candidate_price:
-            self._symbol = stock_request.symbol
-            self._price = candidate_price
-
-    def terminate(self):
-      control.control()
-      if active():
-        if self._symbol is None:
-          raise ValueError()
-        else:
-          stock_reply_callback(
-              stock_pb2.StockReply(symbol=self._symbol, price=self._price))
-          self._symbol = None
-          self._price = None
-
-    def consume_and_terminate(self, stock_request):
-      control.control()
-      if active():
-        if self._price is None:
-          stock_reply_callback(
-              stock_pb2.StockReply(
-                  symbol=stock_request.symbol,
-                  price=_price(stock_request.symbol)))
-        else:
-          candidate_price = _price(stock_request.symbol)
-          if self._price < candidate_price:
-            stock_reply_callback(
-                stock_pb2.StockReply(
-                    symbol=stock_request.symbol, price=candidate_price))
-          else:
-            stock_reply_callback(
+def _watch_future_trades(stock_request, stock_reply_consumer, control, active):
+    """A unary-request, stream-response test method."""
+    base_price = _price(stock_request.symbol)
+    for index in range(stock_request.num_trades_to_watch):
+        control.control()
+        if active():
+            stock_reply_consumer.consume(
                 stock_pb2.StockReply(
-                    symbol=self._symbol, price=self._price))
+                    symbol=stock_request.symbol, price=base_price + index))
+        else:
+            raise abandonment.Abandoned()
+    stock_reply_consumer.terminate()
 
-        self._symbol = None
-        self._price = None
 
-  return StockRequestConsumer()
+def _get_highest_trade_price(stock_reply_callback, control, active):
+    """A stream-request, unary-response test method."""
+
+    class StockRequestConsumer(stream.Consumer):
+        """Keeps an ongoing record of the most valuable symbol yet consumed."""
+
+        def __init__(self):
+            self._symbol = None
+            self._price = None
+
+        def consume(self, stock_request):
+            control.control()
+            if active():
+                if self._price is None:
+                    self._symbol = stock_request.symbol
+                    self._price = _price(stock_request.symbol)
+                else:
+                    candidate_price = _price(stock_request.symbol)
+                    if self._price < candidate_price:
+                        self._symbol = stock_request.symbol
+                        self._price = candidate_price
+
+        def terminate(self):
+            control.control()
+            if active():
+                if self._symbol is None:
+                    raise ValueError()
+                else:
+                    stock_reply_callback(
+                        stock_pb2.StockReply(
+                            symbol=self._symbol, price=self._price))
+                    self._symbol = None
+                    self._price = None
+
+        def consume_and_terminate(self, stock_request):
+            control.control()
+            if active():
+                if self._price is None:
+                    stock_reply_callback(
+                        stock_pb2.StockReply(
+                            symbol=stock_request.symbol,
+                            price=_price(stock_request.symbol)))
+                else:
+                    candidate_price = _price(stock_request.symbol)
+                    if self._price < candidate_price:
+                        stock_reply_callback(
+                            stock_pb2.StockReply(
+                                symbol=stock_request.symbol,
+                                price=candidate_price))
+                    else:
+                        stock_reply_callback(
+                            stock_pb2.StockReply(
+                                symbol=self._symbol, price=self._price))
+
+                self._symbol = None
+                self._price = None
+
+    return StockRequestConsumer()
 
 
 class GetLastTradePrice(_service.UnaryUnaryTestMethodImplementation):
-  """GetLastTradePrice for use in tests."""
+    """GetLastTradePrice for use in tests."""
 
-  def group(self):
-    return _STOCK_GROUP_NAME
+    def group(self):
+        return _STOCK_GROUP_NAME
 
-  def name(self):
-    return 'GetLastTradePrice'
+    def name(self):
+        return 'GetLastTradePrice'
 
-  def cardinality(self):
-    return cardinality.Cardinality.UNARY_UNARY
+    def cardinality(self):
+        return cardinality.Cardinality.UNARY_UNARY
 
-  def request_class(self):
-    return stock_pb2.StockRequest
+    def request_class(self):
+        return stock_pb2.StockRequest
 
-  def response_class(self):
-    return stock_pb2.StockReply
+    def response_class(self):
+        return stock_pb2.StockReply
 
-  def serialize_request(self, request):
-    return request.SerializeToString()
+    def serialize_request(self, request):
+        return request.SerializeToString()
 
-  def deserialize_request(self, serialized_request):
-    return stock_pb2.StockRequest.FromString(serialized_request)
+    def deserialize_request(self, serialized_request):
+        return stock_pb2.StockRequest.FromString(serialized_request)
 
-  def serialize_response(self, response):
-    return response.SerializeToString()
+    def serialize_response(self, response):
+        return response.SerializeToString()
 
-  def deserialize_response(self, serialized_response):
-    return stock_pb2.StockReply.FromString(serialized_response)
+    def deserialize_response(self, serialized_response):
+        return stock_pb2.StockReply.FromString(serialized_response)
 
-  def service(self, request, response_callback, context, control):
-    _get_last_trade_price(
-        request, response_callback, control, context.is_active)
+    def service(self, request, response_callback, context, control):
+        _get_last_trade_price(request, response_callback, control,
+                              context.is_active)
 
 
 class GetLastTradePriceMessages(_service.UnaryUnaryTestMessages):
 
-  def __init__(self):
-    self._index = 0
+    def __init__(self):
+        self._index = 0
 
-  def request(self):
-    symbol = _SYMBOL_FORMAT % self._index
-    self._index += 1
-    return stock_pb2.StockRequest(symbol=symbol)
+    def request(self):
+        symbol = _SYMBOL_FORMAT % self._index
+        self._index += 1
+        return stock_pb2.StockRequest(symbol=symbol)
 
-  def verify(self, request, response, test_case):
-    test_case.assertEqual(request.symbol, response.symbol)
-    test_case.assertEqual(_price(request.symbol), response.price)
+    def verify(self, request, response, test_case):
+        test_case.assertEqual(request.symbol, response.symbol)
+        test_case.assertEqual(_price(request.symbol), response.price)
 
 
 class GetLastTradePriceMultiple(_service.StreamStreamTestMethodImplementation):
-  """GetLastTradePriceMultiple for use in tests."""
+    """GetLastTradePriceMultiple for use in tests."""
 
-  def group(self):
-    return _STOCK_GROUP_NAME
+    def group(self):
+        return _STOCK_GROUP_NAME
 
-  def name(self):
-    return 'GetLastTradePriceMultiple'
+    def name(self):
+        return 'GetLastTradePriceMultiple'
 
-  def cardinality(self):
-    return cardinality.Cardinality.STREAM_STREAM
+    def cardinality(self):
+        return cardinality.Cardinality.STREAM_STREAM
 
-  def request_class(self):
-    return stock_pb2.StockRequest
+    def request_class(self):
+        return stock_pb2.StockRequest
 
-  def response_class(self):
-    return stock_pb2.StockReply
+    def response_class(self):
+        return stock_pb2.StockReply
 
-  def serialize_request(self, request):
-    return request.SerializeToString()
+    def serialize_request(self, request):
+        return request.SerializeToString()
 
-  def deserialize_request(self, serialized_request):
-    return stock_pb2.StockRequest.FromString(serialized_request)
+    def deserialize_request(self, serialized_request):
+        return stock_pb2.StockRequest.FromString(serialized_request)
 
-  def serialize_response(self, response):
-    return response.SerializeToString()
+    def serialize_response(self, response):
+        return response.SerializeToString()
 
-  def deserialize_response(self, serialized_response):
-    return stock_pb2.StockReply.FromString(serialized_response)
+    def deserialize_response(self, serialized_response):
+        return stock_pb2.StockReply.FromString(serialized_response)
 
-  def service(self, response_consumer, context, control):
-    return _get_last_trade_price_multiple(
-        response_consumer, control, context.is_active)
+    def service(self, response_consumer, context, control):
+        return _get_last_trade_price_multiple(response_consumer, control,
+                                              context.is_active)
 
 
 class GetLastTradePriceMultipleMessages(_service.StreamStreamTestMessages):
-  """Pairs of message streams for use with GetLastTradePriceMultiple."""
+    """Pairs of message streams for use with GetLastTradePriceMultiple."""
 
-  def __init__(self):
-    self._index = 0
+    def __init__(self):
+        self._index = 0
 
-  def requests(self):
-    base_index = self._index
-    self._index += 1
-    return [
-        stock_pb2.StockRequest(symbol=_SYMBOL_FORMAT % (base_index + index))
-        for index in range(test_constants.STREAM_LENGTH)]
+    def requests(self):
+        base_index = self._index
+        self._index += 1
+        return [
+            stock_pb2.StockRequest(symbol=_SYMBOL_FORMAT % (base_index + index))
+            for index in range(test_constants.STREAM_LENGTH)
+        ]
 
-  def verify(self, requests, responses, test_case):
-    test_case.assertEqual(len(requests), len(responses))
-    for stock_request, stock_reply in zip(requests, responses):
-      test_case.assertEqual(stock_request.symbol, stock_reply.symbol)
-      test_case.assertEqual(_price(stock_request.symbol), stock_reply.price)
+    def verify(self, requests, responses, test_case):
+        test_case.assertEqual(len(requests), len(responses))
+        for stock_request, stock_reply in zip(requests, responses):
+            test_case.assertEqual(stock_request.symbol, stock_reply.symbol)
+            test_case.assertEqual(
+                _price(stock_request.symbol), stock_reply.price)
 
 
 class WatchFutureTrades(_service.UnaryStreamTestMethodImplementation):
-  """WatchFutureTrades for use in tests."""
+    """WatchFutureTrades for use in tests."""
 
-  def group(self):
-    return _STOCK_GROUP_NAME
+    def group(self):
+        return _STOCK_GROUP_NAME
 
-  def name(self):
-    return 'WatchFutureTrades'
+    def name(self):
+        return 'WatchFutureTrades'
 
-  def cardinality(self):
-    return cardinality.Cardinality.UNARY_STREAM
+    def cardinality(self):
+        return cardinality.Cardinality.UNARY_STREAM
 
-  def request_class(self):
-    return stock_pb2.StockRequest
+    def request_class(self):
+        return stock_pb2.StockRequest
 
-  def response_class(self):
-    return stock_pb2.StockReply
+    def response_class(self):
+        return stock_pb2.StockReply
 
-  def serialize_request(self, request):
-    return request.SerializeToString()
+    def serialize_request(self, request):
+        return request.SerializeToString()
 
-  def deserialize_request(self, serialized_request):
-    return stock_pb2.StockRequest.FromString(serialized_request)
+    def deserialize_request(self, serialized_request):
+        return stock_pb2.StockRequest.FromString(serialized_request)
 
-  def serialize_response(self, response):
-    return response.SerializeToString()
+    def serialize_response(self, response):
+        return response.SerializeToString()
 
-  def deserialize_response(self, serialized_response):
-    return stock_pb2.StockReply.FromString(serialized_response)
+    def deserialize_response(self, serialized_response):
+        return stock_pb2.StockReply.FromString(serialized_response)
 
-  def service(self, request, response_consumer, context, control):
-    _watch_future_trades(request, response_consumer, control, context.is_active)
+    def service(self, request, response_consumer, context, control):
+        _watch_future_trades(request, response_consumer, control,
+                             context.is_active)
 
 
 class WatchFutureTradesMessages(_service.UnaryStreamTestMessages):
-  """Pairs of a single request message and a sequence of response messages."""
+    """Pairs of a single request message and a sequence of response messages."""
 
-  def __init__(self):
-    self._index = 0
+    def __init__(self):
+        self._index = 0
 
-  def request(self):
-    symbol = _SYMBOL_FORMAT % self._index
-    self._index += 1
-    return stock_pb2.StockRequest(
-        symbol=symbol, num_trades_to_watch=test_constants.STREAM_LENGTH)
+    def request(self):
+        symbol = _SYMBOL_FORMAT % self._index
+        self._index += 1
+        return stock_pb2.StockRequest(
+            symbol=symbol, num_trades_to_watch=test_constants.STREAM_LENGTH)
 
-  def verify(self, request, responses, test_case):
-    test_case.assertEqual(test_constants.STREAM_LENGTH, len(responses))
-    base_price = _price(request.symbol)
-    for index, response in enumerate(responses):
-      test_case.assertEqual(base_price + index, response.price)
+    def verify(self, request, responses, test_case):
+        test_case.assertEqual(test_constants.STREAM_LENGTH, len(responses))
+        base_price = _price(request.symbol)
+        for index, response in enumerate(responses):
+            test_case.assertEqual(base_price + index, response.price)
 
 
 class GetHighestTradePrice(_service.StreamUnaryTestMethodImplementation):
-  """GetHighestTradePrice for use in tests."""
+    """GetHighestTradePrice for use in tests."""
 
-  def group(self):
-    return _STOCK_GROUP_NAME
+    def group(self):
+        return _STOCK_GROUP_NAME
 
-  def name(self):
-    return 'GetHighestTradePrice'
+    def name(self):
+        return 'GetHighestTradePrice'
 
-  def cardinality(self):
-    return cardinality.Cardinality.STREAM_UNARY
+    def cardinality(self):
+        return cardinality.Cardinality.STREAM_UNARY
 
-  def request_class(self):
-    return stock_pb2.StockRequest
+    def request_class(self):
+        return stock_pb2.StockRequest
 
-  def response_class(self):
-    return stock_pb2.StockReply
+    def response_class(self):
+        return stock_pb2.StockReply
 
-  def serialize_request(self, request):
-    return request.SerializeToString()
+    def serialize_request(self, request):
+        return request.SerializeToString()
 
-  def deserialize_request(self, serialized_request):
-    return stock_pb2.StockRequest.FromString(serialized_request)
+    def deserialize_request(self, serialized_request):
+        return stock_pb2.StockRequest.FromString(serialized_request)
 
-  def serialize_response(self, response):
-    return response.SerializeToString()
+    def serialize_response(self, response):
+        return response.SerializeToString()
 
-  def deserialize_response(self, serialized_response):
-    return stock_pb2.StockReply.FromString(serialized_response)
+    def deserialize_response(self, serialized_response):
+        return stock_pb2.StockReply.FromString(serialized_response)
 
-  def service(self, response_callback, context, control):
-    return _get_highest_trade_price(
-        response_callback, control, context.is_active)
+    def service(self, response_callback, context, control):
+        return _get_highest_trade_price(response_callback, control,
+                                        context.is_active)
 
 
 class GetHighestTradePriceMessages(_service.StreamUnaryTestMessages):
 
-  def requests(self):
-    return [
-        stock_pb2.StockRequest(symbol=_SYMBOL_FORMAT % index)
-        for index in range(test_constants.STREAM_LENGTH)]
-
-  def verify(self, requests, response, test_case):
-    price = None
-    symbol = None
-    for stock_request in requests:
-      current_symbol = stock_request.symbol
-      current_price = _price(current_symbol)
-      if price is None or price < current_price:
-        price = current_price
-        symbol = current_symbol
-    test_case.assertEqual(price, response.price)
-    test_case.assertEqual(symbol, response.symbol)
+    def requests(self):
+        return [
+            stock_pb2.StockRequest(symbol=_SYMBOL_FORMAT % index)
+            for index in range(test_constants.STREAM_LENGTH)
+        ]
+
+    def verify(self, requests, response, test_case):
+        price = None
+        symbol = None
+        for stock_request in requests:
+            current_symbol = stock_request.symbol
+            current_price = _price(current_symbol)
+            if price is None or price < current_price:
+                price = current_price
+                symbol = current_symbol
+        test_case.assertEqual(price, response.price)
+        test_case.assertEqual(symbol, response.symbol)
 
 
 class StockTestService(_service.TestService):
-  """A corpus of test data with one method of each RPC cardinality."""
-
-  def unary_unary_scenarios(self):
-    return {
-        (_STOCK_GROUP_NAME, 'GetLastTradePrice'): (
-            GetLastTradePrice(), [GetLastTradePriceMessages()]),
-    }
-
-  def unary_stream_scenarios(self):
-    return {
-        (_STOCK_GROUP_NAME, 'WatchFutureTrades'): (
-            WatchFutureTrades(), [WatchFutureTradesMessages()]),
-    }
-
-  def stream_unary_scenarios(self):
-    return {
-        (_STOCK_GROUP_NAME, 'GetHighestTradePrice'): (
-            GetHighestTradePrice(), [GetHighestTradePriceMessages()])
-    }
-
-  def stream_stream_scenarios(self):
-    return {
-        (_STOCK_GROUP_NAME, 'GetLastTradePriceMultiple'): (
-            GetLastTradePriceMultiple(), [GetLastTradePriceMultipleMessages()]),
-    }
+    """A corpus of test data with one method of each RPC cardinality."""
+
+    def unary_unary_scenarios(self):
+        return {
+            (_STOCK_GROUP_NAME, 'GetLastTradePrice'):
+            (GetLastTradePrice(), [GetLastTradePriceMessages()]),
+        }
+
+    def unary_stream_scenarios(self):
+        return {
+            (_STOCK_GROUP_NAME, 'WatchFutureTrades'):
+            (WatchFutureTrades(), [WatchFutureTradesMessages()]),
+        }
+
+    def stream_unary_scenarios(self):
+        return {
+            (_STOCK_GROUP_NAME, 'GetHighestTradePrice'):
+            (GetHighestTradePrice(), [GetHighestTradePriceMessages()])
+        }
+
+    def stream_stream_scenarios(self):
+        return {
+            (_STOCK_GROUP_NAME, 'GetLastTradePriceMultiple'):
+            (GetLastTradePriceMultiple(),
+             [GetLastTradePriceMultipleMessages()]),
+        }
 
 
 STOCK_TEST_SERVICE = StockTestService()
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_cases.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_cases.py
index 71de9d835e9f651716893ca999b48e8c1bf8c2a2..d84e1fc1361e95bc2a8af89a6728b091b965c078 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_cases.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_cases.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Tools for creating tests of implementations of the Face layer."""
 
 # unittest is referenced from specification in this module.
@@ -40,12 +39,11 @@ from tests.unit.framework.interfaces.face import test_interfaces  # pylint: disa
 
 _TEST_CASE_SUPERCLASSES = (
     _blocking_invocation_inline_service.TestCase,
-    _future_invocation_asynchronous_event_service.TestCase,
-)
+    _future_invocation_asynchronous_event_service.TestCase,)
 
 
 def test_cases(implementation):
-  """Creates unittest.TestCase classes for a given Face layer implementation.
+    """Creates unittest.TestCase classes for a given Face layer implementation.
 
   Args:
     implementation: A test_interfaces.Implementation specifying creation and
@@ -55,13 +53,14 @@ def test_cases(implementation):
     A sequence of subclasses of unittest.TestCase defining tests of the
       specified Face layer implementation.
   """
-  test_case_classes = []
-  for invoker_constructor in _invocation.invoker_constructors():
-    for super_class in _TEST_CASE_SUPERCLASSES:
-      test_case_classes.append(
-          type(invoker_constructor.name() + super_class.NAME, (super_class,),
-               {'implementation': implementation,
-                'invoker_constructor': invoker_constructor,
-                '__module__': implementation.__module__,
-               }))
-  return test_case_classes
+    test_case_classes = []
+    for invoker_constructor in _invocation.invoker_constructors():
+        for super_class in _TEST_CASE_SUPERCLASSES:
+            test_case_classes.append(
+                type(invoker_constructor.name() + super_class.NAME, (
+                    super_class,), {
+                        'implementation': implementation,
+                        'invoker_constructor': invoker_constructor,
+                        '__module__': implementation.__module__,
+                    }))
+    return test_case_classes
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_interfaces.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_interfaces.py
index 40f38e68ba1231b62363ff205a8e90efc3a06975..a789d435b488fd9c9cacceffdc1a65f054e1618f 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_interfaces.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_interfaces.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Interfaces used in tests of implementations of the Face layer."""
 
 import abc
@@ -38,103 +37,102 @@ from grpc.framework.interfaces.face import face  # pylint: disable=unused-import
 
 
 class Method(six.with_metaclass(abc.ABCMeta)):
-  """Specifies a method to be used in tests."""
+    """Specifies a method to be used in tests."""
 
-  @abc.abstractmethod
-  def group(self):
-    """Identify the group of the method.
+    @abc.abstractmethod
+    def group(self):
+        """Identify the group of the method.
 
     Returns:
       The group of the method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def name(self):
-    """Identify the name of the method.
+    @abc.abstractmethod
+    def name(self):
+        """Identify the name of the method.
 
     Returns:
       The name of the method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def cardinality(self):
-    """Identify the cardinality of the method.
+    @abc.abstractmethod
+    def cardinality(self):
+        """Identify the cardinality of the method.
 
     Returns:
       A cardinality.Cardinality value describing the streaming semantics of the
         method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def request_class(self):
-    """Identify the class used for the method's request objects.
+    @abc.abstractmethod
+    def request_class(self):
+        """Identify the class used for the method's request objects.
 
     Returns:
       The class object of the class to which the method's request objects
         belong.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def response_class(self):
-    """Identify the class used for the method's response objects.
+    @abc.abstractmethod
+    def response_class(self):
+        """Identify the class used for the method's response objects.
 
     Returns:
       The class object of the class to which the method's response objects
         belong.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def serialize_request(self, request):
-    """Serialize the given request object.
+    @abc.abstractmethod
+    def serialize_request(self, request):
+        """Serialize the given request object.
 
     Args:
       request: A request object appropriate for this method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def deserialize_request(self, serialized_request):
-    """Synthesize a request object from a given bytestring.
+    @abc.abstractmethod
+    def deserialize_request(self, serialized_request):
+        """Synthesize a request object from a given bytestring.
 
     Args:
       serialized_request: A bytestring deserializable into a request object
         appropriate for this method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def serialize_response(self, response):
-    """Serialize the given response object.
+    @abc.abstractmethod
+    def serialize_response(self, response):
+        """Serialize the given response object.
 
     Args:
       response: A response object appropriate for this method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def deserialize_response(self, serialized_response):
-    """Synthesize a response object from a given bytestring.
+    @abc.abstractmethod
+    def deserialize_response(self, serialized_response):
+        """Synthesize a response object from a given bytestring.
 
     Args:
       serialized_response: A bytestring deserializable into a response object
         appropriate for this method.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
 
 class Implementation(six.with_metaclass(abc.ABCMeta)):
-  """Specifies an implementation of the Face layer."""
+    """Specifies an implementation of the Face layer."""
 
-  @abc.abstractmethod
-  def instantiate(
-      self, methods, method_implementations,
-      multi_method_implementation):
-    """Instantiates the Face layer implementation to be used in a test.
+    @abc.abstractmethod
+    def instantiate(self, methods, method_implementations,
+                    multi_method_implementation):
+        """Instantiates the Face layer implementation to be used in a test.
 
     Args:
       methods: A sequence of Method objects describing the methods available to
@@ -151,69 +149,69 @@ class Implementation(six.with_metaclass(abc.ABCMeta)):
         passed to destantiate at the conclusion of the test. The returned stubs
         must be backed by the provided implementations.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def destantiate(self, memo):
-    """Destroys the Face layer implementation under test.
+    @abc.abstractmethod
+    def destantiate(self, memo):
+        """Destroys the Face layer implementation under test.
 
     Args:
       memo: The object from the third position of the return value of a call to
         instantiate.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def invocation_metadata(self):
-    """Provides the metadata to be used when invoking a test RPC.
+    @abc.abstractmethod
+    def invocation_metadata(self):
+        """Provides the metadata to be used when invoking a test RPC.
 
     Returns:
       An object to use as the supplied-at-invocation-time metadata in a test
         RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def initial_metadata(self):
-    """Provides the metadata for use as a test RPC's first servicer metadata.
+    @abc.abstractmethod
+    def initial_metadata(self):
+        """Provides the metadata for use as a test RPC's first servicer metadata.
 
     Returns:
       An object to use as the from-the-servicer-before-responses metadata in a
         test RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def terminal_metadata(self):
-    """Provides the metadata for use as a test RPC's second servicer metadata.
+    @abc.abstractmethod
+    def terminal_metadata(self):
+        """Provides the metadata for use as a test RPC's second servicer metadata.
 
     Returns:
       An object to use as the from-the-servicer-after-all-responses metadata in
         a test RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def code(self):
-    """Provides the value for use as a test RPC's code.
+    @abc.abstractmethod
+    def code(self):
+        """Provides the value for use as a test RPC's code.
 
     Returns:
       An object to use as the from-the-servicer code in a test RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def details(self):
-    """Provides the value for use as a test RPC's details.
+    @abc.abstractmethod
+    def details(self):
+        """Provides the value for use as a test RPC's details.
 
     Returns:
       An object to use as the from-the-servicer details in a test RPC.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
 
-  @abc.abstractmethod
-  def metadata_transmitted(self, original_metadata, transmitted_metadata):
-    """Identifies whether or not metadata was properly transmitted.
+    @abc.abstractmethod
+    def metadata_transmitted(self, original_metadata, transmitted_metadata):
+        """Identifies whether or not metadata was properly transmitted.
 
     Args:
       original_metadata: A metadata value passed to the Face interface
@@ -226,4 +224,4 @@ class Implementation(six.with_metaclass(abc.ABCMeta)):
       Whether or not the metadata was properly transmitted by the Face interface
         implementation under test.
     """
-    raise NotImplementedError()
+        raise NotImplementedError()
diff --git a/src/python/grpcio_tests/tests/unit/resources.py b/src/python/grpcio_tests/tests/unit/resources.py
index 023cdb155f26dcd692082aa1b7f18f6120fc17e7..55a2fff979bcd736ce95bc02cebc93e706772d70 100644
--- a/src/python/grpcio_tests/tests/unit/resources.py
+++ b/src/python/grpcio_tests/tests/unit/resources.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Constants and functions for data used in interoperability testing."""
 
 import os
@@ -39,14 +38,14 @@ _CERTIFICATE_CHAIN_RESOURCE_PATH = 'credentials/server1.pem'
 
 
 def test_root_certificates():
-  return pkg_resources.resource_string(
-      __name__, _ROOT_CERTIFICATES_RESOURCE_PATH)
+    return pkg_resources.resource_string(__name__,
+                                         _ROOT_CERTIFICATES_RESOURCE_PATH)
 
 
 def private_key():
-  return pkg_resources.resource_string(__name__, _PRIVATE_KEY_RESOURCE_PATH)
+    return pkg_resources.resource_string(__name__, _PRIVATE_KEY_RESOURCE_PATH)
 
 
 def certificate_chain():
-  return pkg_resources.resource_string(
-      __name__, _CERTIFICATE_CHAIN_RESOURCE_PATH)
+    return pkg_resources.resource_string(__name__,
+                                         _CERTIFICATE_CHAIN_RESOURCE_PATH)
diff --git a/src/python/grpcio_tests/tests/unit/test_common.py b/src/python/grpcio_tests/tests/unit/test_common.py
index cd71bd80d75462ad6c14f8bd0280106bd591f93a..00fbe0567a201d8bcb384c6f1b9c8901450b312c 100644
--- a/src/python/grpcio_tests/tests/unit/test_common.py
+++ b/src/python/grpcio_tests/tests/unit/test_common.py
@@ -26,7 +26,6 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 """Common code used throughout tests of gRPC."""
 
 import collections
@@ -34,14 +33,23 @@ import collections
 import grpc
 import six
 
-INVOCATION_INITIAL_METADATA = (('0', 'abc'), ('1', 'def'), ('2', 'ghi'),)
-SERVICE_INITIAL_METADATA = (('3', 'jkl'), ('4', 'mno'), ('5', 'pqr'),)
-SERVICE_TERMINAL_METADATA = (('6', 'stu'), ('7', 'vwx'), ('8', 'yza'),)
+INVOCATION_INITIAL_METADATA = (
+    ('0', 'abc'),
+    ('1', 'def'),
+    ('2', 'ghi'),)
+SERVICE_INITIAL_METADATA = (
+    ('3', 'jkl'),
+    ('4', 'mno'),
+    ('5', 'pqr'),)
+SERVICE_TERMINAL_METADATA = (
+    ('6', 'stu'),
+    ('7', 'vwx'),
+    ('8', 'yza'),)
 DETAILS = 'test details'
 
 
 def metadata_transmitted(original_metadata, transmitted_metadata):
-  """Judges whether or not metadata was acceptably transmitted.
+    """Judges whether or not metadata was acceptably transmitted.
 
   gRPC is allowed to insert key-value pairs into the metadata values given by
   applications and to reorder key-value pairs with different keys but it is not
@@ -59,31 +67,30 @@ def metadata_transmitted(original_metadata, transmitted_metadata):
      A boolean indicating whether transmitted_metadata accurately reflects
       original_metadata after having been transmitted via gRPC.
   """
-  original = collections.defaultdict(list)
-  for key, value in original_metadata:
-    original[key].append(value)
-  transmitted = collections.defaultdict(list)
-  for key, value in transmitted_metadata:
-    transmitted[key].append(value)
+    original = collections.defaultdict(list)
+    for key, value in original_metadata:
+        original[key].append(value)
+    transmitted = collections.defaultdict(list)
+    for key, value in transmitted_metadata:
+        transmitted[key].append(value)
 
-  for key, values in six.iteritems(original):
-    transmitted_values = transmitted[key]
-    transmitted_iterator = iter(transmitted_values)
-    try:
-      for value in values:
-        while True:
-          transmitted_value = next(transmitted_iterator)
-          if value == transmitted_value:
-            break
-    except StopIteration:
-      return False
-  else:
-    return True
+    for key, values in six.iteritems(original):
+        transmitted_values = transmitted[key]
+        transmitted_iterator = iter(transmitted_values)
+        try:
+            for value in values:
+                while True:
+                    transmitted_value = next(transmitted_iterator)
+                    if value == transmitted_value:
+                        break
+        except StopIteration:
+            return False
+    else:
+        return True
 
 
-def test_secure_channel(
-    target, channel_credentials, server_host_override):
-  """Creates an insecure Channel to a remote host.
+def test_secure_channel(target, channel_credentials, server_host_override):
+    """Creates an insecure Channel to a remote host.
 
   Args:
     host: The name of the remote host to which to connect.
@@ -96,7 +103,7 @@ def test_secure_channel(
     An implementations.Channel to the remote host through which RPCs may be
       conducted.
   """
-  channel = grpc.secure_channel(
-      target, channel_credentials,
-      (('grpc.ssl_target_name_override', server_host_override,),))
-  return channel
+    channel = grpc.secure_channel(target, channel_credentials, ((
+        'grpc.ssl_target_name_override',
+        server_host_override,),))
+    return channel
diff --git a/src/ruby/ext/grpc/rb_byte_buffer.c b/src/ruby/ext/grpc/rb_byte_buffer.c
index f97890e4a2eef0c117d1d628f9696507d1fcd16b..47fd6d91200c36919498e2b9d78c40501ef4a23c 100644
--- a/src/ruby/ext/grpc/rb_byte_buffer.c
+++ b/src/ruby/ext/grpc/rb_byte_buffer.c
@@ -65,5 +65,6 @@ VALUE grpc_rb_byte_buffer_to_s(grpc_byte_buffer *buffer) {
                GRPC_SLICE_LENGTH(next));
     grpc_slice_unref(next);
   }
+  grpc_byte_buffer_reader_destroy(&reader);
   return rb_string;
 }
diff --git a/src/ruby/ext/grpc/rb_server.c b/src/ruby/ext/grpc/rb_server.c
index 2a6a246e677321303fa2f36cd32346145c86f1ba..c7b112c94b446b3b0779bf65c2d1fd51f37c0061 100644
--- a/src/ruby/ext/grpc/rb_server.c
+++ b/src/ruby/ext/grpc/rb_server.c
@@ -37,6 +37,7 @@
 #include "rb_server.h"
 
 #include <grpc/grpc.h>
+#include <grpc/support/atm.h>
 #include <grpc/grpc_security.h>
 #include <grpc/support/log.h>
 #include "rb_call.h"
@@ -59,22 +60,26 @@ typedef struct grpc_rb_server {
   /* The actual server */
   grpc_server *wrapped;
   grpc_completion_queue *queue;
+  gpr_atm shutdown_started;
 } grpc_rb_server;
 
 static void destroy_server(grpc_rb_server *server, gpr_timespec deadline) {
   grpc_event ev;
-  if (server->wrapped != NULL) {
-    grpc_server_shutdown_and_notify(server->wrapped, server->queue, NULL);
-    ev = rb_completion_queue_pluck(server->queue, NULL, deadline, NULL);
-    if (ev.type == GRPC_QUEUE_TIMEOUT) {
-      grpc_server_cancel_all_calls(server->wrapped);
-      rb_completion_queue_pluck(server->queue, NULL,
-                                gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+  // This can be started by app or implicitly by GC. Avoid a race between these.
+  if (gpr_atm_full_fetch_add(&server->shutdown_started, (gpr_atm)1) == 0) {
+    if (server->wrapped != NULL) {
+      grpc_server_shutdown_and_notify(server->wrapped, server->queue, NULL);
+      ev = rb_completion_queue_pluck(server->queue, NULL, deadline, NULL);
+      if (ev.type == GRPC_QUEUE_TIMEOUT) {
+        grpc_server_cancel_all_calls(server->wrapped);
+        rb_completion_queue_pluck(server->queue, NULL,
+                                  gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+      }
+      grpc_server_destroy(server->wrapped);
+      grpc_rb_completion_queue_destroy(server->queue);
+      server->wrapped = NULL;
+      server->queue = NULL;
     }
-    grpc_server_destroy(server->wrapped);
-    grpc_rb_completion_queue_destroy(server->queue);
-    server->wrapped = NULL;
-    server->queue = NULL;
   }
 }
 
@@ -115,6 +120,7 @@ static const rb_data_type_t grpc_rb_server_data_type = {
 static VALUE grpc_rb_server_alloc(VALUE cls) {
   grpc_rb_server *wrapper = ALLOC(grpc_rb_server);
   wrapper->wrapped = NULL;
+  wrapper->shutdown_started = (gpr_atm)0;
   return TypedData_Wrap_Struct(cls, &grpc_rb_server_data_type, wrapper);
 }
 
diff --git a/src/ruby/lib/grpc/errors.rb b/src/ruby/lib/grpc/errors.rb
index 23b2bb7e127f707a645acaabfff19f3e9de24886..f6998e17c496bb6a94edde2da64567cb116b82a0 100644
--- a/src/ruby/lib/grpc/errors.rb
+++ b/src/ruby/lib/grpc/errors.rb
@@ -35,9 +35,18 @@ module GRPC
   # either end of a GRPC connection.  When raised, it indicates that a status
   # error should be returned to the other end of a GRPC connection; when
   # caught it means that this end received a status error.
+  #
+  # There is also subclass of BadStatus in this module for each GRPC status.
+  # E.g., the GRPC::Cancelled class corresponds to status CANCELLED.
+  #
+  # See
+  # https://github.com/grpc/grpc/blob/master/include/grpc/impl/codegen/status.h
+  # for detailed descriptions of each status code.
   class BadStatus < StandardError
     attr_reader :code, :details, :metadata
 
+    include GRPC::Core::StatusCodes
+
     # @param code [Numeric] the status code
     # @param details [String] the details of the exception
     # @param metadata [Hash] the error's metadata
@@ -55,9 +64,152 @@ module GRPC
     def to_status
       Struct::Status.new(code, details, @metadata)
     end
+
+    def self.new_status_exception(code, details = 'unkown cause', metadata = {})
+      codes = {}
+      codes[OK] = Ok
+      codes[CANCELLED] = Cancelled
+      codes[UNKNOWN] = Unknown
+      codes[INVALID_ARGUMENT] = InvalidArgument
+      codes[DEADLINE_EXCEEDED] = DeadlineExceeded
+      codes[NOT_FOUND] = NotFound
+      codes[ALREADY_EXISTS] = AlreadyExists
+      codes[PERMISSION_DENIED] =  PermissionDenied
+      codes[UNAUTHENTICATED] = Unauthenticated
+      codes[RESOURCE_EXHAUSTED] = ResourceExhausted
+      codes[FAILED_PRECONDITION] = FailedPrecondition
+      codes[ABORTED] = Aborted
+      codes[OUT_OF_RANGE] = OutOfRange
+      codes[UNIMPLEMENTED] =  Unimplemented
+      codes[INTERNAL] = Internal
+      codes[UNIMPLEMENTED] =  Unimplemented
+      codes[UNAVAILABLE] =  Unavailable
+      codes[DATA_LOSS] = DataLoss
+
+      if codes[code].nil?
+        BadStatus.new(code, details, metadata)
+      else
+        codes[code].new(details, metadata)
+      end
+    end
+  end
+
+  # GRPC status code corresponding to status OK
+  class Ok < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::OK, details, metadata)
+    end
   end
 
-  # Cancelled is an exception class that indicates that an rpc was cancelled.
-  class Cancelled < StandardError
+  # GRPC status code corresponding to status CANCELLED
+  class Cancelled < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::CANCELLED, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status UNKNOWN
+  class Unknown < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::UNKNOWN, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status INVALID_ARGUMENT
+  class InvalidArgument < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::INVALID_ARGUMENT, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status DEADLINE_EXCEEDED
+  class DeadlineExceeded < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::DEADLINE_EXCEEDED, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status NOT_FOUND
+  class NotFound < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::NOT_FOUND, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status ALREADY_EXISTS
+  class AlreadyExists < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::ALREADY_EXISTS, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status PERMISSION_DENIED
+  class PermissionDenied < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::PERMISSION_DENIED, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status UNAUTHENTICATED
+  class Unauthenticated < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::UNAUTHENTICATED, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status RESOURCE_EXHAUSTED
+  class ResourceExhausted < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::RESOURCE_EXHAUSTED, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status FAILED_PRECONDITION
+  class FailedPrecondition < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::FAILED_PRECONDITION, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status ABORTED
+  class Aborted < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::ABORTED, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status OUT_OF_RANGE
+  class OutOfRange < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::OUT_OF_RANGE, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status UNIMPLEMENTED
+  class Unimplemented < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::UNIMPLEMENTED, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status INTERNAL
+  class Internal < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::INTERNAL, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status UNAVAILABLE
+  class Unavailable < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::UNAVAILABLE, details, metadata)
+    end
+  end
+
+  # GRPC status code corresponding to status DATA_LOSS
+  class DataLoss < BadStatus
+    def initialize(details = 'unknown cause', metadata = {})
+      super(Core::StatusCodes::DATA_LOSS, details, metadata)
+    end
   end
 end
diff --git a/src/ruby/lib/grpc/generic/active_call.rb b/src/ruby/lib/grpc/generic/active_call.rb
index f5c426ebfc6e122f4ec3f7d6057679111908cb63..3b31f77ec088ca0a5738a7e193c24cd9347e0e9c 100644
--- a/src/ruby/lib/grpc/generic/active_call.rb
+++ b/src/ruby/lib/grpc/generic/active_call.rb
@@ -43,8 +43,8 @@ class Struct
         GRPC.logger.debug("Failing with status #{status}")
         # raise BadStatus, propagating the metadata if present.
         md = status.metadata
-        fail GRPC::BadStatus.new(status.code, status.details, md),
-             "status code: #{status.code}, details: #{status.details}"
+        fail GRPC::BadStatus.new_status_exception(
+          status.code, status.details, md)
       end
       status
     end
diff --git a/src/ruby/lib/grpc/generic/bidi_call.rb b/src/ruby/lib/grpc/generic/bidi_call.rb
index d7cd9e6df2b8ff14ab451e7403dc3b3bcba25e0b..adc77bbf5d515f7ef61113d4001daa3da6da210d 100644
--- a/src/ruby/lib/grpc/generic/bidi_call.rb
+++ b/src/ruby/lib/grpc/generic/bidi_call.rb
@@ -200,6 +200,7 @@ module GRPC
             if is_client
               batch_result = @call.run_batch(RECV_STATUS_ON_CLIENT => nil)
               @call.status = batch_result.status
+              @call.trailing_metadata = @call.status.metadata if @call.status
               batch_result.check_status
               GRPC.logger.debug("bidi-read-loop: done status #{@call.status}")
             end
@@ -219,6 +220,10 @@ module GRPC
       GRPC.logger.debug('bidi-read-loop: finished')
       @reads_complete = true
       finished
+      # Make sure that the write loop is done done before finishing the call.
+      # Note that blocking is ok at this point because we've already received
+      # a status
+      @enq_th.join if is_client
     end
   end
 end
diff --git a/src/ruby/lib/grpc/generic/rpc_desc.rb b/src/ruby/lib/grpc/generic/rpc_desc.rb
index cd17aed8e7c4c07bb42233485bbe2f2a85a6b4b4..d46c4a1b5c23a1fa4d05b67f906ae7a5d098dd77 100644
--- a/src/ruby/lib/grpc/generic/rpc_desc.rb
+++ b/src/ruby/lib/grpc/generic/rpc_desc.rb
@@ -119,7 +119,7 @@ module GRPC
       # Send back a UNKNOWN status to the client
       GRPC.logger.warn("failed handler: #{active_call}; sending status:UNKNOWN")
       GRPC.logger.warn(e)
-      send_status(active_call, UNKNOWN, 'unkown error handling call on server')
+      send_status(active_call, UNKNOWN, "#{e.class}: #{e.message}")
     end
 
     def assert_arity_matches(mth)
diff --git a/src/ruby/lib/grpc/generic/service.rb b/src/ruby/lib/grpc/generic/service.rb
index 7cb9f1cc99d95448d5728095d43f9bd478d15150..f5a6b49eb4471d038578c4be81ca769b4538c34d 100644
--- a/src/ruby/lib/grpc/generic/service.rb
+++ b/src/ruby/lib/grpc/generic/service.rb
@@ -110,8 +110,9 @@ module GRPC
         rpc_descs[name] = RpcDesc.new(name, input, output,
                                       marshal_class_method,
                                       unmarshal_class_method)
-        define_method(name) do
-          fail GRPC::BadStatus, GRPC::Core::StatusCodes::UNIMPLEMENTED
+        define_method(GenericService.underscore(name.to_s).to_sym) do |_, _|
+          fail GRPC::BadStatus.new_status_exception(
+            GRPC::Core::StatusCodes::UNIMPLEMENTED)
         end
       end
 
diff --git a/src/ruby/pb/grpc/health/checker.rb b/src/ruby/pb/grpc/health/checker.rb
index 4bce1744c48f2e32c20ea2cdbbfe2041aceadff7..6b2d852ebfd6ad23d08764f18a761b1bba80290e 100644
--- a/src/ruby/pb/grpc/health/checker.rb
+++ b/src/ruby/pb/grpc/health/checker.rb
@@ -52,7 +52,9 @@ module Grpc
         @status_mutex.synchronize do
           status = @statuses["#{req.service}"]
         end
-        fail GRPC::BadStatus, StatusCodes::NOT_FOUND if status.nil?
+	if status.nil?
+          fail GRPC::BadStatus.new_status_exception(StatusCodes::NOT_FOUND)
+	end
         HealthCheckResponse.new(status: status)
       end
 
diff --git a/src/ruby/pb/src/proto/grpc/testing/test_services_pb.rb b/src/ruby/pb/src/proto/grpc/testing/test_services_pb.rb
index fde328e4c5d2053cf3bc7f58683bb543098991bf..7d1072e512c51701b7793a614d05a0ea43af9031 100644
--- a/src/ruby/pb/src/proto/grpc/testing/test_services_pb.rb
+++ b/src/ruby/pb/src/proto/grpc/testing/test_services_pb.rb
@@ -54,6 +54,10 @@ module Grpc
         rpc :EmptyCall, Empty, Empty
         # One request followed by one response.
         rpc :UnaryCall, SimpleRequest, SimpleResponse
+        # One request followed by one response. Response has cache control
+        # headers set such that a caching HTTP proxy (such as GFE) can
+        # satisfy subsequent requests.
+        rpc :CacheableUnaryCall, SimpleRequest, SimpleResponse
         # One request followed by a sequence of responses (streamed download).
         # The server returns the payload with client desired type and sizes.
         rpc :StreamingOutputCall, StreamingOutputCallRequest, stream(StreamingOutputCallResponse)
@@ -69,6 +73,9 @@ module Grpc
         # stream of responses are returned to the client when the server starts with
         # first request.
         rpc :HalfDuplexCall, stream(StreamingOutputCallRequest), stream(StreamingOutputCallResponse)
+        # The test server will not implement this method. It will be used
+        # to test the behavior when clients call unimplemented methods.
+        rpc :UnimplementedCall, Empty, Empty
       end
 
       Stub = Service.rpc_stub_class
diff --git a/src/ruby/pb/test/client.rb b/src/ruby/pb/test/client.rb
index 1e3ae656302da8e8fd8ad1f58b4bf2cd8919e009..9c4ee9c6f2bb4b0ad3499951aa87fd87c734b666 100755
--- a/src/ruby/pb/test/client.rb
+++ b/src/ruby/pb/test/client.rb
@@ -158,14 +158,26 @@ def create_stub(opts)
 
     GRPC.logger.info("... connecting securely to #{address}")
     stub_opts[:channel_args].merge!(compression_channel_args)
-    Grpc::Testing::TestService::Stub.new(address, creds, **stub_opts)
+    if opts.test_case == "unimplemented_service"
+      Grpc::Testing::UnimplementedService::Stub.new(address, creds, **stub_opts)
+    else
+      Grpc::Testing::TestService::Stub.new(address, creds, **stub_opts)
+    end
   else
     GRPC.logger.info("... connecting insecurely to #{address}")
-    Grpc::Testing::TestService::Stub.new(
-      address,
-      :this_channel_is_insecure,
-      channel_args: compression_channel_args
-    )
+    if opts.test_case == "unimplemented_service"
+      Grpc::Testing::UnimplementedService::Stub.new(
+        address,
+        :this_channel_is_insecure,
+        channel_args: compression_channel_args
+      )
+    else
+      Grpc::Testing::TestService::Stub.new(
+        address,
+        :this_channel_is_insecure,
+        channel_args: compression_channel_args
+      )
+    end
   end
 end
 
@@ -459,11 +471,8 @@ class NamedTests
     deadline = GRPC::Core::TimeConsts::from_relative_time(1)
     resps = @stub.full_duplex_call(enum.each_item, deadline: deadline)
     resps.each { } # wait to receive each request (or timeout)
-    fail 'Should have raised GRPC::BadStatus(DEADLINE_EXCEEDED)'
-  rescue GRPC::BadStatus => e
-    assert("#{__callee__}: status was wrong") do
-      e.code == GRPC::Core::StatusCodes::DEADLINE_EXCEEDED
-    end
+    fail 'Should have raised GRPC::DeadlineExceeded'
+  rescue GRPC::DeadlineExceeded
   end
 
   def empty_stream
@@ -505,6 +514,153 @@ class NamedTests
     op.wait
   end
 
+  def unimplemented_method
+    begin
+      resp = @stub.unimplemented_call(Empty.new)
+    rescue GRPC::Unimplemented => e
+      return
+    rescue Exception => e
+      fail AssertionError, "Expected BadStatus. Received: #{e.inspect}"
+    end
+    fail AssertionError, "GRPC::Unimplemented should have been raised. Was not."
+  end
+
+  def unimplemented_service
+    begin
+      resp = @stub.unimplemented_call(Empty.new)
+    rescue GRPC::Unimplemented => e
+      return
+    rescue Exception => e
+      fail AssertionError, "Expected BadStatus. Received: #{e.inspect}"
+    end
+    fail AssertionError, "GRPC::Unimplemented should have been raised. Was not."
+  end
+
+  def status_code_and_message
+
+    # Function wide constants.
+    message = "test status method"
+    code = GRPC::Core::StatusCodes::UNKNOWN
+
+    # Testing with UnaryCall.
+    payload = Payload.new(type: :COMPRESSABLE, body: nulls(1))
+    echo_status = EchoStatus.new(code: code, message: message)
+    req = SimpleRequest.new(response_type: :COMPRESSABLE,
+			    response_size: 1,
+			    payload: payload,
+			    response_status: echo_status)
+    seen_correct_exception = false
+    begin
+      resp = @stub.unary_call(req)
+    rescue GRPC::Unknown => e
+      if e.details != message
+	      fail AssertionError,
+	        "Expected message #{message}. Received: #{e.details}"
+      end
+      seen_correct_exception = true
+    rescue Exception => e
+      fail AssertionError, "Expected BadStatus. Received: #{e.inspect}"
+    end
+
+    if not seen_correct_exception
+      fail AssertionError, "Did not see expected status from UnaryCall"
+    end
+
+    # testing with FullDuplex
+    req_cls, p_cls = StreamingOutputCallRequest, ResponseParameters
+    duplex_req = req_cls.new(payload: Payload.new(body: nulls(1)),
+                  response_type: :COMPRESSABLE,
+                  response_parameters: [p_cls.new(size: 1)],
+                  response_status: echo_status)
+    seen_correct_exception = false
+    begin
+      resp = @stub.full_duplex_call([duplex_req])
+      resp.each { |r| }
+    rescue GRPC::Unknown => e
+      if e.details != message
+        fail AssertionError,
+          "Expected message #{message}. Received: #{e.details}"
+      end
+      seen_correct_exception = true
+    rescue Exception => e
+      fail AssertionError, "Expected BadStatus. Received: #{e.inspect}"
+    end
+
+    if not seen_correct_exception
+      fail AssertionError, "Did not see expected status from FullDuplexCall"
+    end
+
+  end
+
+
+  def custom_metadata
+
+    # Function wide constants
+    req_size, wanted_response_size = 271_828, 314_159
+    initial_metadata_key = "x-grpc-test-echo-initial"
+    initial_metadata_value = "test_initial_metadata_value"
+    trailing_metadata_key = "x-grpc-test-echo-trailing-bin"
+    trailing_metadata_value = "\x0a\x0b\x0a\x0b\x0a\x0b"
+
+    metadata = {
+      initial_metadata_key => initial_metadata_value,
+      trailing_metadata_key => trailing_metadata_value
+    }
+
+    # Testing with UnaryCall
+    payload = Payload.new(type: :COMPRESSABLE, body: nulls(req_size))
+    req = SimpleRequest.new(response_type: :COMPRESSABLE,
+			    response_size: wanted_response_size,
+			    payload: payload)
+
+    op = @stub.unary_call(req, metadata: metadata, return_op: true)
+    op.execute
+    if not op.metadata.has_key?(initial_metadata_key)
+      fail AssertionError, "Expected initial metadata. None received"
+    elsif op.metadata[initial_metadata_key] != metadata[initial_metadata_key]
+      fail AssertionError, 
+             "Expected initial metadata: #{metadata[initial_metadata_key]}. "\
+             "Received: #{op.metadata[initial_metadata_key]}"
+    end
+    if not op.trailing_metadata.has_key?(trailing_metadata_key)
+      fail AssertionError, "Expected trailing metadata. None received"
+    elsif op.trailing_metadata[trailing_metadata_key] !=
+          metadata[trailing_metadata_key]
+      fail AssertionError, 
+            "Expected trailing metadata: #{metadata[trailing_metadata_key]}. "\
+            "Received: #{op.trailing_metadata[trailing_metadata_key]}"
+    end
+
+    # Testing with FullDuplex
+    req_cls, p_cls = StreamingOutputCallRequest, ResponseParameters
+    duplex_req = req_cls.new(payload: Payload.new(body: nulls(req_size)),
+                  response_type: :COMPRESSABLE,
+                  response_parameters: [p_cls.new(size: wanted_response_size)])
+
+    duplex_op = @stub.full_duplex_call([duplex_req], metadata: metadata,
+                                        return_op: true)
+    resp = duplex_op.execute
+    resp.each { |r| } # ensures that the server sends trailing data
+    duplex_op.wait
+    if not duplex_op.metadata.has_key?(initial_metadata_key)
+      fail AssertionError, "Expected initial metadata. None received"
+    elsif duplex_op.metadata[initial_metadata_key] !=
+          metadata[initial_metadata_key]
+      fail AssertionError,
+             "Expected initial metadata: #{metadata[initial_metadata_key]}. "\
+             "Received: #{duplex_op.metadata[initial_metadata_key]}"
+    end
+    if not duplex_op.trailing_metadata[trailing_metadata_key]
+      fail AssertionError, "Expected trailing metadata. None received"
+    elsif duplex_op.trailing_metadata[trailing_metadata_key] !=
+          metadata[trailing_metadata_key]
+      fail AssertionError, 
+          "Expected trailing metadata: #{metadata[trailing_metadata_key]}. "\
+          "Received: #{duplex_op.trailing_metadata[trailing_metadata_key]}"
+    end
+
+  end
+
   def all
     all_methods = NamedTests.instance_methods(false).map(&:to_s)
     all_methods.each do |m|
diff --git a/src/ruby/pb/test/server.rb b/src/ruby/pb/test/server.rb
index 3f1e0a1ccfc00f94bd21879265af866936bd7f88..cc9b8726481b9225e74c7c7a52dda72dc73123ec 100755
--- a/src/ruby/pb/test/server.rb
+++ b/src/ruby/pb/test/server.rb
@@ -129,6 +129,27 @@ def nulls(l)
   [].pack('x' * l).force_encoding('ascii-8bit')
 end
 
+def maybe_echo_metadata(_call)
+  
+  # these are consistent for all interop tests
+  initial_metadata_key = "x-grpc-test-echo-initial"
+  trailing_metadata_key = "x-grpc-test-echo-trailing-bin"
+
+  if _call.metadata.has_key?(initial_metadata_key)
+    _call.metadata_to_send[initial_metadata_key] = _call.metadata[initial_metadata_key]
+  end
+  if _call.metadata.has_key?(trailing_metadata_key)
+    _call.output_metadata[trailing_metadata_key] = _call.metadata[trailing_metadata_key]
+  end
+end
+
+def maybe_echo_status_and_message(req)
+  unless req.response_status.nil?
+    fail GRPC::BadStatus.new_status_exception(
+        req.response_status.code, req.response_status.message)
+  end
+end
+
 # A FullDuplexEnumerator passes requests to a block and yields generated responses
 class FullDuplexEnumerator
   include Grpc::Testing
@@ -143,6 +164,7 @@ class FullDuplexEnumerator
     begin
       cls = StreamingOutputCallResponse
       @requests.each do |req|
+        maybe_echo_status_and_message(req)
         req.response_parameters.each do |params|
           resp_size = params.size
           GRPC.logger.info("read a req, response size is #{resp_size}")
@@ -170,6 +192,8 @@ class TestTarget < Grpc::Testing::TestService::Service
   end
 
   def unary_call(simple_req, _call)
+    maybe_echo_metadata(_call)
+    maybe_echo_status_and_message(simple_req)
     req_size = simple_req.response_size
     SimpleResponse.new(payload: Payload.new(type: :COMPRESSABLE,
                                             body: nulls(req_size)))
@@ -189,7 +213,8 @@ class TestTarget < Grpc::Testing::TestService::Service
     end
   end
 
-  def full_duplex_call(reqs)
+  def full_duplex_call(reqs, _call)
+    maybe_echo_metadata(_call)
     # reqs is a lazy Enumerator of the requests sent by the client.
     FullDuplexEnumerator.new(reqs).each_item
   end
diff --git a/src/ruby/qps/client.rb b/src/ruby/qps/client.rb
index 8aed866da5d98c1dbd88b8728792879142d6acf9..817192626be0d0a86529f7f30037938752bc6783 100644
--- a/src/ruby/qps/client.rb
+++ b/src/ruby/qps/client.rb
@@ -134,6 +134,7 @@ class BenchmarkClient
     resp = stub.streaming_call(q.each_item)
     start = Time.now
     q.push(req)
+    pushed_sentinal = false
     resp.each do |r|
       @histogram.add((Time.now-start)*1e9)
       if !@done
@@ -141,8 +142,9 @@ class BenchmarkClient
         start = Time.now
         q.push(req)
       else
-        q.push(self)
-        break
+        q.push(self) unless pushed_sentinal
+	# Continue polling on the responses to consume and release resources
+        pushed_sentinal = true
       end
     end
   end
diff --git a/tools/buildgen/generate_projects-old.sh b/src/ruby/spec/error_sanity_spec.rb
similarity index 54%
rename from tools/buildgen/generate_projects-old.sh
rename to src/ruby/spec/error_sanity_spec.rb
index 55d93d4942bf96fa4457c64dfad315fa705e2359..77e94a88160b91a5f628acd4e1edb68ad89a899b 100644
--- a/tools/buildgen/generate_projects-old.sh
+++ b/src/ruby/spec/error_sanity_spec.rb
@@ -1,4 +1,3 @@
-#!/bin/sh
 # Copyright 2015, Google Inc.
 # All rights reserved.
 #
@@ -28,49 +27,38 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+require 'grpc'
 
-set -e
+StatusCodes = GRPC::Core::StatusCodes
 
-if [ "x$TEST" = "x" ] ; then
-  TEST=false
-fi
+describe StatusCodes do
+  # convert upper snake-case to camel case.
+  # e.g., DEADLINE_EXCEEDED -> DeadlineExceeded
+  def upper_snake_to_camel(name)
+    name.to_s.split('_').map(&:downcase).map(&:capitalize).join('')
+  end
 
+  StatusCodes.constants.each do |status_name|
+    it 'there is a subclass of BadStatus corresponding to StatusCode: ' \
+      "#{status_name} that has code: #{StatusCodes.const_get(status_name)}" do
+      camel_case = upper_snake_to_camel(status_name)
+      error_class = GRPC.const_get(camel_case)
+      # expect the error class to be a subclass of BadStatus
+      expect(error_class < GRPC::BadStatus)
 
-cd `dirname $0`/../..
-mako_renderer=tools/buildgen/mako_renderer.py
+      error_object = error_class.new
+      # check that the code matches the int value of the error's constant
+      status_code = StatusCodes.const_get(status_name)
+      expect(error_object.code).to eq(status_code)
 
-if [ "x$TEST" != "x" ] ; then
-  tools/buildgen/build-cleaner.py build.yaml
-fi
+      # check default parameters
+      expect(error_object.details).to eq('unknown cause')
+      expect(error_object.metadata).to eq({})
 
-. tools/buildgen/generate_build_additions.sh
-
-global_plugins=`find ./tools/buildgen/plugins -name '*.py' |
-  sort | grep -v __init__ | awk ' { printf "-p %s ", $0 } '`
-
-for dir in . ; do
-  local_plugins=`find $dir/templates -name '*.py' |
-    sort | grep -v __init__ | awk ' { printf "-p %s ", $0 } '`
-
-  plugins="$global_plugins $local_plugins"
-
-  find -L $dir/templates -type f -and -name *.template | while read file ; do
-    out=${dir}/${file#$dir/templates/}  # strip templates dir prefix
-    out=${out%.*}  # strip template extension
-    echo "generating file: $out"
-    yaml_files="build.yaml $gen_build_files"
-    data=`for i in $yaml_files ; do echo $i ; done | awk ' { printf "-d %s ", $0 } '`
-    if [ "x$TEST" = "xtrue" ] ; then
-      actual_out=$out
-      out=`mktemp /tmp/gentXXXXXX`
-    fi
-    mkdir -p `dirname $out`  # make sure dest directory exist
-    $mako_renderer $plugins $data -o $out $file
-    if [ "x$TEST" = "xtrue" ] ; then
-      diff -q $out $actual_out
-      rm $out
-    fi
-  done
-done
-
-rm $gen_build_files
+      # check that the BadStatus factory for creates the correct
+      # exception too
+      from_factory = GRPC::BadStatus.new_status_exception(status_code)
+      expect(from_factory.is_a?(error_class)).to be(true)
+    end
+  end
+end
diff --git a/src/ruby/spec/generic/client_stub_spec.rb b/src/ruby/spec/generic/client_stub_spec.rb
index 607a4a3c5da980d936ff099bcf0075e90b0dd087..b51b291cbddd8ee4a96ffb11209f4a48c3647b02 100644
--- a/src/ruby/spec/generic/client_stub_spec.rb
+++ b/src/ruby/spec/generic/client_stub_spec.rb
@@ -190,15 +190,14 @@ describe 'ClientStub' do
         end
         creds = GRPC::Core::CallCredentials.new(failing_auth)
 
-        error_occured = false
+        unauth_error_occured = false
         begin
           get_response(stub, credentials: creds)
-        rescue GRPC::BadStatus => e
-          error_occured = true
-          expect(e.code).to eq(GRPC::Core::StatusCodes::UNAUTHENTICATED)
+        rescue GRPC::Unauthenticated => e
+          unauth_error_occured = true
           expect(e.details.include?(error_message)).to be true
         end
-        expect(error_occured).to eq(true)
+        expect(unauth_error_occured).to eq(true)
 
         # Kill the server thread so tests can complete
         th.kill
diff --git a/src/ruby/spec/generic/rpc_desc_spec.rb b/src/ruby/spec/generic/rpc_desc_spec.rb
index a3f0efa6036d27c8ac33e369573b9d5fde02293b..1ace7211e9cd7c2534e5b7ff9f59512291620354 100644
--- a/src/ruby/spec/generic/rpc_desc_spec.rb
+++ b/src/ruby/spec/generic/rpc_desc_spec.rb
@@ -48,7 +48,6 @@ describe GRPC::RpcDesc do
     @bidi_streamer = RpcDesc.new('ss', Stream.new(Object.new),
                                  Stream.new(Object.new), 'encode', 'decode')
     @bs_code = INTERNAL
-    @no_reason = 'unkown error handling call on server'
     @ok_response = Object.new
   end
 
@@ -62,8 +61,9 @@ describe GRPC::RpcDesc do
 
     it 'sends status UNKNOWN if other StandardErrors are raised' do
       expect(@call).to receive(:remote_read).once.and_return(Object.new)
-      expect(@call).to receive(:send_status) .once.with(UNKNOWN, @no_reason,
-                                                        false, metadata: {})
+      expect(@call).to receive(:send_status).once.with(UNKNOWN,
+                                                       arg_error_msg,
+                                                       false, metadata: {})
       this_desc.run_server_method(@call, method(:other_error))
     end
 
@@ -112,7 +112,7 @@ describe GRPC::RpcDesc do
       end
 
       it 'sends status UNKNOWN if other StandardErrors are raised' do
-        expect(@call).to receive(:send_status).once.with(UNKNOWN, @no_reason,
+        expect(@call).to receive(:send_status).once.with(UNKNOWN, arg_error_msg,
                                                          false, metadata: {})
         @client_streamer.run_server_method(@call, method(:other_error_alt))
       end
@@ -174,8 +174,9 @@ describe GRPC::RpcDesc do
       end
 
       it 'sends status UNKNOWN if other StandardErrors are raised' do
+        error_msg = arg_error_msg(StandardError.new)
         expect(@call).to receive(:run_server_bidi).and_raise(StandardError)
-        expect(@call).to receive(:send_status).once.with(UNKNOWN, @no_reason,
+        expect(@call).to receive(:send_status).once.with(UNKNOWN, error_msg,
                                                          false, metadata: {})
         @bidi_streamer.run_server_method(@call, method(:other_error_alt))
       end
@@ -342,4 +343,9 @@ describe GRPC::RpcDesc do
   def other_error_alt(_call)
     fail(ArgumentError, 'other error')
   end
+
+  def arg_error_msg(error = nil)
+    error ||= ArgumentError.new('other error')
+    "#{error.class}: #{error.message}"
+  end
 end
diff --git a/src/ruby/spec/generic/rpc_server_pool_spec.rb b/src/ruby/spec/generic/rpc_server_pool_spec.rb
index 48ccaee510156e69688a85c817f63db8a027c998..69e8222cb97f4bf0031e3efbc7b06597fbe8c179 100644
--- a/src/ruby/spec/generic/rpc_server_pool_spec.rb
+++ b/src/ruby/spec/generic/rpc_server_pool_spec.rb
@@ -94,18 +94,6 @@ describe GRPC::Pool do
       expect(q.pop).to be(o)
       p.stop
     end
-
-    it 'it throws an error if all of the workers have tasks to do' do
-      p = Pool.new(5)
-      p.start
-      job = proc {}
-      5.times do
-        expect(p.ready_for_work?).to be(true)
-        p.schedule(&job)
-      end
-      expect { p.schedule(&job) }.to raise_error
-      expect { p.schedule(&job) }.to raise_error
-    end
   end
 
   describe '#stop' do
diff --git a/src/ruby/spec/generic/rpc_server_spec.rb b/src/ruby/spec/generic/rpc_server_spec.rb
index c5694790fdf0c6ef7772071360cab66de85f0189..806ea8ce9fd04ee50fbf832c26d25f70b47a828e 100644
--- a/src/ruby/spec/generic/rpc_server_spec.rb
+++ b/src/ruby/spec/generic/rpc_server_spec.rb
@@ -408,21 +408,21 @@ describe GRPC::RpcServer do
         req = EchoMsg.new
         n = 20 # arbitrary, use as many to ensure the server pool is exceeded
         threads = []
-        bad_status_code = nil
+        one_failed_as_unavailable = false
         n.times do
           threads << Thread.new do
             stub = SlowStub.new(alt_host, :this_channel_is_insecure)
             begin
               stub.an_rpc(req)
-            rescue GRPC::BadStatus => e
-              bad_status_code = e.code
+            rescue GRPC::ResourceExhausted
+              one_failed_as_unavailable = true
             end
           end
         end
         threads.each(&:join)
         alt_srv.stop
         t.join
-        expect(bad_status_code).to be(StatusCodes::RESOURCE_EXHAUSTED)
+        expect(one_failed_as_unavailable).to be(true)
       end
     end
 
diff --git a/src/ruby/spec/pb/health/checker_spec.rb b/src/ruby/spec/pb/health/checker_spec.rb
index 4711e09e88a7cb5b6a6abad4aa3193f319aa52dc..719510001c1a4e654d0f2868244c2d2570ef88a0 100644
--- a/src/ruby/spec/pb/health/checker_spec.rb
+++ b/src/ruby/spec/pb/health/checker_spec.rb
@@ -122,7 +122,7 @@ describe Grpc::Health::Checker do
           checker.check(HCReq.new(service: t[:service]), nil)
         end
         expected_msg = /#{StatusCodes::NOT_FOUND}/
-        expect(&blk).to raise_error GRPC::BadStatus, expected_msg
+        expect(&blk).to raise_error GRPC::NotFound, expected_msg
       end
     end
   end
@@ -141,7 +141,7 @@ describe Grpc::Health::Checker do
           checker.check(HCReq.new(service: t[:service]), nil)
         end
         expected_msg = /#{StatusCodes::NOT_FOUND}/
-        expect(&blk).to raise_error GRPC::BadStatus, expected_msg
+        expect(&blk).to raise_error GRPC::NotFound, expected_msg
       end
     end
   end
@@ -163,7 +163,7 @@ describe Grpc::Health::Checker do
           checker.check(HCReq.new(service: t[:service]), nil)
         end
         expected_msg = /#{StatusCodes::NOT_FOUND}/
-        expect(&blk).to raise_error GRPC::BadStatus, expected_msg
+        expect(&blk).to raise_error GRPC::NotFound, expected_msg
       end
     end
   end
@@ -214,7 +214,7 @@ describe Grpc::Health::Checker do
         stub.check(HCReq.new(service: 'unknown'))
       end
       expected_msg = /#{StatusCodes::NOT_FOUND}/
-      expect(&blk).to raise_error GRPC::BadStatus, expected_msg
+      expect(&blk).to raise_error GRPC::NotFound, expected_msg
       @srv.stop
       t.join
     end
diff --git a/src/ruby/spec/spec_helper.rb b/src/ruby/spec/spec_helper.rb
index c891c1bf5e45e32eaab4df10c094ef1bdc20bea1..c2be0afa726aba8fe8718714557ba77a3b8e084c 100644
--- a/src/ruby/spec/spec_helper.rb
+++ b/src/ruby/spec/spec_helper.rb
@@ -67,3 +67,5 @@ RSpec.configure do |config|
 end
 
 RSpec::Expectations.configuration.warn_about_potential_false_positives = false
+
+Thread.abort_on_exception = true
diff --git a/templates/BUILD.template b/templates/BUILD.template
deleted file mode 100644
index af23fb279945d560f542fa4784e85b5a56a49168..0000000000000000000000000000000000000000
--- a/templates/BUILD.template
+++ /dev/null
@@ -1,256 +0,0 @@
-%YAML 1.2
---- |
-  # GRPC Bazel BUILD file.
-  # This currently builds C, C++ and Objective-C code.
-  # This file has been automatically generated from a template file.
-  # Please look at the templates directory instead.
-  # This file can be regenerated from the template by running
-  # tools/buildgen/generate_projects.sh
-  
-  # Copyright 2015, Google Inc.
-  # All rights reserved.
-  #
-  # Redistribution and use in source and binary forms, with or without
-  # modification, are permitted provided that the following conditions are
-  # met:
-  #
-  #     * Redistributions of source code must retain the above copyright
-  # notice, this list of conditions and the following disclaimer.
-  #     * Redistributions in binary form must reproduce the above
-  # copyright notice, this list of conditions and the following disclaimer
-  # in the documentation and/or other materials provided with the
-  # distribution.
-  #     * Neither the name of Google Inc. nor the names of its
-  # contributors may be used to endorse or promote products derived from
-  # this software without specific prior written permission.
-  #
-  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  
-  licenses(["notice"])  # 3-clause BSD
-  
-  exports_files(["LICENSE"])
-  
-  package(default_visibility = ["//visibility:public"])
-  
-  <%!
-  def get_deps(target_dict):
-    deps = []
-    if target_dict.get('secure', False):
-      deps = [
-        "//external:libssl",
-      ]
-    if target_dict.get('build', None) == 'protoc':
-      deps.append("//external:protobuf_compiler")
-    if (target_dict['name'] == 'grpc++_unsecure' or
-        target_dict['name'] == 'grpc++' or
-        target_dict['name'] == 'grpc++_codegen_lib'):
-      deps.append("//external:protobuf_clib")
-    elif target_dict['name'] == 'grpc':
-      deps.append("//external:zlib")
-    for d in target_dict.get('deps', []):
-      if d.find('//') == 0 or d[0] == ':':
-        deps.append(d)
-      else:
-        deps.append(':%s' % (d))
-    return deps
-  %>
-
-  % for lib in libs:
-  % if lib.build in ("all", "protoc"):
-  ${cc_library(lib)}
-  % endif
-  % endfor
-  
-  % for lib in libs:
-  % if lib.name in ("grpc", "gpr"):
-  ${objc_library(lib)}
-  % endif
-  % endfor
-  
-  % for tgt in targets:
-  % if tgt.build == 'protoc':
-  ${cc_binary(tgt)}
-  % endif
-  % endfor
-  
-  <%def name="cc_library(lib)">
-  <%
-    lib_hdrs = lib.get("headers", [])
-    hdrs = [h for h in lib_hdrs if not h.startswith('third_party/nanopb')]
-    srcs = [s for s in lib.src if not s.startswith('third_party/nanopb')]
-    uses_nanopb = len(lib_hdrs) != len(hdrs) or len(srcs) != len(lib.src)
-  %>
-  cc_library(
-    name = "${lib.name}",
-    srcs = [
-  % for hdr in hdrs:
-      "${hdr}",
-  % endfor
-  % for src in srcs:
-      "${src}",
-  % endfor
-    ],
-    hdrs = [
-  % for hdr in lib.get("public_headers", []):
-      "${hdr}",
-  % endfor
-    ],
-    includes = [
-      "include",
-      ".",
-    ],
-    deps = [
-  % for dep in get_deps(lib):
-      "${dep}",
-  % endfor
-  % if uses_nanopb:
-      "//external:nanopb",
-  % endif
-    ],
-  % if lib.name in ("grpc", "grpc_unsecure"):
-    copts = [
-      "-std=gnu99",
-    ],
-  % endif
-  )
-  </%def>
-  
-  <%def name="objc_library(lib)">
-  <%
-    lib_hdrs = lib.get("headers", [])
-    hdrs = [h for h in lib_hdrs if not h.startswith('third_party/nanopb')]
-    srcs = [s for s in lib.src if not s.startswith('third_party/nanopb')]
-    uses_nanopb = len(lib_hdrs) != len(hdrs) or len(srcs) != len(lib.src)
-  %>
-  objc_library(
-    name = "${lib.name}_objc",
-    srcs = [
-  % for src in srcs:
-      "${src}",
-  % endfor
-    ],
-    hdrs = [
-  % for hdr in lib.get("public_headers", []):
-      "${hdr}",
-  % endfor
-  % for hdr in hdrs:
-      "${hdr}",
-  % endfor
-    ],
-    includes = [
-      "include",
-      ".",
-    ],
-    deps = [
-  % for dep in lib.get("deps", []):
-      ":${dep}_objc",
-  % endfor
-  % if lib.get('secure', False):
-      "//external:libssl_objc",
-  % endif
-  % if uses_nanopb:
-      "//external:nanopb",
-  % endif
-    ],
-  % if lib.get("baselib", false):
-    sdk_dylibs = ["libz"],
-  % endif
-  )
-  </%def>
-  
-  <%def name="cc_binary(tgt)">
-  cc_binary(
-    name = "${tgt.name}",
-    srcs = [
-  % for src in tgt.src:
-      "${src}",
-  % endfor
-    ],
-    deps = [
-  % for dep in get_deps(tgt):
-      "${dep}",
-  % endfor
-    ],
-  )
-  </%def>
-  
-  objc_path = "src/objective-c"
-  
-  rx_library_path = objc_path + "/RxLibrary"
-  
-  objc_library(
-    name = "rx_library",
-    hdrs = glob([
-      rx_library_path + "/*.h",
-      rx_library_path + "/transformations/*.h",
-    ]),
-    srcs = glob([
-      rx_library_path + "/*.m",
-      rx_library_path + "/transformations/*.m",
-    ]),
-    includes = [objc_path],
-    deps = [
-      ":rx_library_private",
-    ],
-  )
-  
-  objc_library(
-    name = "rx_library_private",
-    hdrs = glob([rx_library_path + "/private/*.h"]),
-    srcs = glob([rx_library_path + "/private/*.m"]),
-    visibility = ["//visibility:private"],
-  )
-  
-  objc_client_path = objc_path + "/GRPCClient"
-  
-  objc_library(
-    name = "grpc_client",
-    hdrs = glob([
-      objc_client_path + "/*.h",
-      objc_client_path + "/private/*.h",
-    ]),
-    srcs = glob([
-      objc_client_path + "/*.m",
-      objc_client_path + "/private/*.m",
-    ]),
-    includes = [objc_path],
-    bundles = [":gRPCCertificates"],
-    deps = [
-      ":grpc_objc",
-      ":rx_library",
-    ],
-  )
-  
-  objc_bundle_library(
-      # The choice of name is signicant here, since it determines the bundle name.
-      name = "gRPCCertificates",
-      resources = ["etc/roots.pem"],
-  )
-  
-  proto_objc_rpc_path = objc_path + "/ProtoRPC"
-  
-  objc_library(
-    name = "proto_objc_rpc",
-    hdrs = glob([
-      proto_objc_rpc_path + "/*.h",
-    ]),
-    srcs = glob([
-      proto_objc_rpc_path + "/*.m",
-    ]),
-    includes = [objc_path],
-    deps = [
-      ":grpc_client",
-      ":rx_library",
-      "//external:protobuf_objc",
-    ],
-  )
diff --git a/templates/CMakeLists.txt.template b/templates/CMakeLists.txt.template
index c3c636c6af7db733bd1ec7e298735553ce7b8b38..a326f36fe939068a3f025b05aaf535656ca1ed88 100644
--- a/templates/CMakeLists.txt.template
+++ b/templates/CMakeLists.txt.template
@@ -40,6 +40,17 @@
   # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
   <%!
+  
+  import re
+  
+  proto_re = re.compile('(.*)\\.proto')
+  
+  def proto_replace_ext(filename, ext):
+      m = proto_re.match(filename)
+      if not m:
+        return filename
+      return '${_gRPC_PROTO_GENS_DIR}/' + m.group(1) + ext
+  
   def get_deps(target_dict):
     deps = []
     if target_dict.get('baselib', False):
@@ -54,6 +65,8 @@
       deps.append("${_gRPC_ZLIB_LIBRARIES}")
     for d in target_dict.get('deps', []):
       deps.append(d)
+    if target_dict.build == 'test' and target_dict.language == 'c++':
+      deps.append("${_gRPC_GFLAGS_LIBRARIES}")
     return deps
   %>
 
@@ -65,6 +78,9 @@
   set(PACKAGE_TARNAME   "<%text>${PACKAGE_NAME}-${PACKAGE_VERSION}</%text>")
   set(PACKAGE_BUGREPORT "https://github.com/grpc/grpc/issues/")
   project(<%text>${PACKAGE_NAME}</%text> C CXX)
+  
+  # Options
+  option(gRPC_BUILD_TESTS "Build tests" OFF)
 
   if (NOT MSVC)
     set(gRPC_INSTALL ON CACHE BOOL "Generate installation target")
@@ -80,11 +96,20 @@
 
   set(gRPC_PROTOBUF_PROVIDER "module" CACHE STRING "Provider of protobuf library")
   set_property(CACHE gRPC_PROTOBUF_PROVIDER PROPERTY STRINGS "module" "package")
-
+  
+  set(gRPC_GFLAGS_PROVIDER "module" CACHE STRING "Provider of gflags library")
+  set_property(CACHE gRPC_GFLAGS_PROVIDER PROPERTY STRINGS "module" "package")
+  
   set(gRPC_USE_PROTO_LITE OFF CACHE BOOL "Use the protobuf-lite library")
 
   if (MSVC)
-    add_definitions( -D_WIN32_WINNT=0x600 )
+    add_definitions(-D_WIN32_WINNT=0x600 -D_SCL_SECURE_NO_WARNINGS -D_CRT_SECURE_NO_WARNINGS -D_WINSOCK_DEPRECATED_NO_WARNINGS)
+    # needed to compile boringssl
+    add_definitions(/wd4464 /wd4623 /wd4668 /wd4701 /wd4702 /wd4777 /wd5027)
+    # needed to compile protobuf
+    add_definitions(/wd4065 /wd4506)
+    # TODO(jtattermusch): revisit C4267 occurrences throughout the code
+    add_definitions(/wd4267)
   endif()
 
   if (gRPC_USE_PROTO_LITE)
@@ -134,6 +159,9 @@
       if(TARGET libprotoc)
         set(_gRPC_PROTOBUF_PROTOC_LIBRARIES libprotoc)
       endif()
+      if(TARGET protoc)
+        set(_gRPC_PROTOBUF_PROTOC protoc)
+      endif()
     else()
         message(WARNING "gRPC_PROTOBUF_PROVIDER is \"module\" but PROTOBUF_ROOT_DIR is wrong")
     endif()
@@ -146,6 +174,9 @@
       if(TARGET protobuf::libprotoc)
         set(_gRPC_PROTOBUF_PROTOC_LIBRARIES protobuf::libprotoc)
       endif()
+      if(TARGET protobuf::protoc)
+        set(_gRPC_PROTOBUF_PROTOC protobuf::protoc)
+      endif()
       set(_gRPC_FIND_PROTOBUF "if(NOT protobuf_FOUND)\n  find_package(protobuf CONFIG)\nendif()")
     else()
       find_package(Protobuf MODULE)
@@ -172,6 +203,26 @@
     endif()
     set(_gRPC_FIND_SSL "if(NOT OpenSSL_FOUND)\n  find_package(OpenSSL)\nendif()")
   endif()
+  
+  if("<%text>${gRPC_GFLAGS_PROVIDER}</%text>" STREQUAL "module")
+    if(NOT GFLAGS_ROOT_DIR)
+      set(GFLAGS_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/gflags)
+    endif()
+    if(EXISTS "<%text>${GFLAGS_ROOT_DIR}</%text>/CMakeLists.txt")
+        add_subdirectory(<%text>${GFLAGS_ROOT_DIR}</%text> third_party/gflags)
+        if(TARGET gflags_static)
+            set(_gRPC_GFLAGS_LIBRARIES gflags_static)
+        endif()
+    else()
+        message(WARNING "gRPC_GFLAGS_PROVIDER is \"module\" but GFLAGS_ROOT_DIR is wrong")
+    endif()
+  elseif("<%text>${gRPC_GFLAGS_PROVIDER}</%text>" STREQUAL "package")
+    find_package(gflags)
+    if(TARGET gflags::gflags)
+      set(_gRPC_GFLAGS_LIBRARIES gflags::gflags)
+    endif()
+    set(_gRPC_FIND_GFLAGS "if(NOT gflags_FOUND)\n  find_package(gflags)\nendif()")
+  endif()
 
   if(NOT MSVC)
     set(CMAKE_C_FLAGS   "<%text>${CMAKE_C_FLAGS}</%text>   -std=c11")
@@ -186,27 +237,105 @@
   if(NOT DEFINED CMAKE_INSTALL_CMAKEDIR)
     set(CMAKE_INSTALL_CMAKEDIR "<%text>${CMAKE_INSTALL_LIBDIR}</%text>/cmake/gRPC")
   endif()
-
+  
+  # Create directory for generated .proto files
+  set(_gRPC_PROTO_GENS_DIR <%text>${CMAKE_BINARY_DIR}/gens</%text>)
+  file(MAKE_DIRECTORY <%text>${_gRPC_PROTO_GENS_DIR}</%text>)
+  
+  #  protobuf_generate_grpc_cpp
+  #  --------------------------
+  #
+  #   Add custom commands to process ``.proto`` files to C++ using protoc and
+  #   GRPC plugin::
+  #
+  #     protobuf_generate_grpc_cpp [<ARGN>...]
+  #
+  #   ``ARGN``
+  #     ``.proto`` files
+  #
+  function(protobuf_generate_grpc_cpp)
+    if(NOT ARGN)
+      message(SEND_ERROR "Error: PROTOBUF_GENERATE_GRPC_CPP() called without any proto files")
+      return()
+    endif()
+  
+    set(_protobuf_include_path -I .)
+    foreach(FIL <%text>${ARGN}</%text>)
+      get_filename_component(ABS_FIL <%text>${FIL}</%text> ABSOLUTE)
+      get_filename_component(FIL_WE <%text>${FIL}</%text> NAME_WE)
+      file(RELATIVE_PATH REL_FIL <%text>${CMAKE_SOURCE_DIR}</%text> <%text>${ABS_FIL}</%text>)
+      get_filename_component(REL_DIR <%text>${REL_FIL}</%text> DIRECTORY)
+      set(RELFIL_WE "<%text>${REL_DIR}/${FIL_WE}</%text>")
+      
+      add_custom_command(
+        OUTPUT <%text>"${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.cc"</%text>
+               <%text>"${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.h"</%text>
+               <%text>"${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.cc"</%text>
+               <%text>"${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.h"</%text>
+        COMMAND <%text>${_gRPC_PROTOBUF_PROTOC}</%text>
+        ARGS --grpc_out=<%text>${_gRPC_PROTO_GENS_DIR}</%text>
+             --cpp_out=<%text>${_gRPC_PROTO_GENS_DIR}</%text>
+             --plugin=protoc-gen-grpc=$<TARGET_FILE:grpc_cpp_plugin>
+             <%text>${_protobuf_include_path}</%text>
+             <%text>${REL_FIL}</%text>
+        DEPENDS <%text>${ABS_FIL}</%text> <%text>${_gRPC_PROTOBUF_PROTOC}</%text> grpc_cpp_plugin
+        WORKING_DIRECTORY <%text>${CMAKE_SOURCE_DIR}</%text>
+        COMMENT "Running gRPC C++ protocol buffer compiler on <%text>${FIL}</%text>"
+        VERBATIM)
+        
+        <%text>set_source_files_properties("${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.cc" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.h" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.cc" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.h" PROPERTIES GENERATED TRUE)</%text>
+    endforeach()
+  endfunction()
+  
   % for lib in libs:
-  % if lib.build in ["all", "protoc", "tool"]:
-    ${cc_library(lib)}
-    ${cc_install(lib)}
+  % if lib.build in ["all", "protoc", "tool", "test", "private"] and lib.language in ['c', 'c++']:
+  % if not lib.get('build_system', []) or 'cmake' in lib.get('build_system', []):
+  % if lib.build in ["test", "private"]:
+  if (gRPC_BUILD_TESTS)
+  ${cc_library(lib)}
+  endif (gRPC_BUILD_TESTS)
+  % else:
+  ${cc_library(lib)}
+  ${cc_install(lib)}
+  % endif
+  % endif
   % endif
   % endfor
 
   % for tgt in targets:
-  % if tgt.build in ["all", "protoc", "tool"]:
+  % if tgt.build in ["all", "protoc", "tool", "test", "private"] and tgt.language in ['c', 'c++']:
+  % if tgt.build in ["test", "private"]:
+  if (gRPC_BUILD_TESTS)
+  ${cc_binary(tgt)}
+  endif (gRPC_BUILD_TESTS)
+  % else:
   ${cc_binary(tgt)}
   ${cc_install(tgt)}
   % endif
+  % endif
   % endfor
 
   <%def name="cc_library(lib)">
   add_library(${lib.name}
   % for src in lib.src:
+  % if not proto_re.match(src):
     ${src}
+  % else:
+    ${proto_replace_ext(src, '.pb.cc')}
+    ${proto_replace_ext(src, '.grpc.pb.cc')}
+    ${proto_replace_ext(src, '.pb.h')}
+    ${proto_replace_ext(src, '.grpc.pb.h')}
+  % endif
   % endfor
   )
+  
+  % for src in lib.src:
+  % if proto_re.match(src):
+  protobuf_generate_grpc_cpp(
+    ${src}
+  )
+  % endif
+  % endfor
 
   target_include_directories(${lib.name}
     PRIVATE <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>
@@ -215,6 +344,14 @@
     PRIVATE <%text>${PROTOBUF_ROOT_DIR}</%text>/src
     PRIVATE <%text>${ZLIB_INCLUDE_DIR}</%text>
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/zlib
+    PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/gflags/include
+  % if lib.build in ['test', 'private'] and lib.language == 'c++':
+    PRIVATE third_party/googletest/include
+    PRIVATE third_party/googletest
+  % endif
+  % if any(proto_re.match(src) for src in lib.src):
+    PRIVATE <%text>${_gRPC_PROTO_GENS_DIR}</%text>
+  % endif
   )
 
   % if len(get_deps(lib)) > 0:
@@ -245,6 +382,9 @@
   % for src in tgt.src:
     ${src}
   % endfor
+  % if tgt.build == 'test' and tgt.language == 'c++':
+    third_party/googletest/src/gtest-all.cc
+  % endif
   )
 
   target_include_directories(${tgt.name}
@@ -254,6 +394,11 @@
     PRIVATE <%text>${PROTOBUF_ROOT_DIR}</%text>/src
     PRIVATE <%text>${ZLIB_ROOT_DIR}</%text>
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/zlib
+    PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/gflags/include
+  % if tgt.build in ['test', 'private'] and tgt.language == 'c++':
+    PRIVATE third_party/googletest/include
+    PRIVATE third_party/googletest
+  % endif
   )
 
   % if len(get_deps(tgt)) > 0:
diff --git a/templates/Makefile.template b/templates/Makefile.template
index 109de33c31eca42d9929373a64537e4320d2e519..6f4db26f2bf40b053f347776ed5a59abcd313625 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -182,12 +182,19 @@
   endif
   STRIP ?= strip -x
   else
+  ifeq ($(SYSTEM),MINGW32)
+  ifeq ($(origin AR), default)
+  AR = ar rcs
+  endif
+  STRIP ?= strip --strip-unneeded
+  else
   ifeq ($(origin AR), default)
   AR = ar rcs
   endif
   STRIP ?= strip
   endif
   endif
+  endif
   INSTALL ?= install
   RM ?= rm -f
   PKG_CONFIG ?= pkg-config
@@ -392,6 +399,7 @@
   Libs.private: $(PC_LIBS_PRIVATE)
 
   ifeq ($(SYSTEM),MINGW32)
+  EXECUTABLE_SUFFIX = .exe
   SHARED_EXT_CORE = dll
   SHARED_EXT_CPP = dll
   SHARED_EXT_CSHARP = dll
@@ -400,6 +408,7 @@
   SHARED_VERSION_CPP = -${settings.cpp_version.major}
   SHARED_VERSION_CSHARP = -${settings.csharp_version.major}
   else ifeq ($(SYSTEM),Darwin)
+  EXECUTABLE_SUFFIX = 
   SHARED_EXT_CORE = dylib
   SHARED_EXT_CPP = dylib
   SHARED_EXT_CSHARP = dylib
@@ -408,6 +417,7 @@
   SHARED_VERSION_CPP =
   SHARED_VERSION_CSHARP =
   else
+  EXECUTABLE_SUFFIX = 
   SHARED_EXT_CORE = so.$(CORE_VERSION)
   SHARED_EXT_CPP = so.$(CPP_VERSION)
   SHARED_EXT_CSHARP = so.$(CSHARP_VERSION)
@@ -1196,7 +1206,7 @@
   $(GENDIR)/${p}.grpc.pb.cc: ${p}.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) ${' '.join('$(GENDIR)/%s.pb.cc $(GENDIR)/%s.grpc.pb.cc' % (q,q) for q in proto_deps.get(p, []))}
   	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
   	$(Q) mkdir -p `dirname $@`
-  	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+  	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
   endif
 
   % endfor
@@ -1293,9 +1303,9 @@
   % if not lib.get('external_deps', None):
   	$(E) "[INSTALL] Installing $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]}).$(SHARED_EXT_${lang_to_var[lib.language]})"
   	$(Q) $(INSTALL) -d $(prefix)/lib
-  	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]}).$(SHARED_EXT_${lang_to_var[lib.language]}) $(prefix)/lib/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT_${lang_to_var[lib.language]})
+  	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]}).$(SHARED_EXT_${lang_to_var[lib.language]}) $(prefix)/lib/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]}).$(SHARED_EXT_${lang_to_var[lib.language]})
   ifeq ($(SYSTEM),MINGW32)
-  	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/lib${lib.name}-imp.a $(prefix)/lib/lib${lib.name}-imp.a
+  	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/lib${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]})-dll.a $(prefix)/lib/lib${lib.name}.a
   else ifneq ($(SYSTEM),Darwin)
   	$(Q) ln -sf $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]}).$(SHARED_EXT_${lang_to_var[lib.language]}) $(prefix)/lib/lib${lib.name}.so.${settings.core_version.major}
   	$(Q) ln -sf $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]}).$(SHARED_EXT_${lang_to_var[lib.language]}) $(prefix)/lib/lib${lib.name}.so
@@ -1322,9 +1332,6 @@
   ${install_shared("csharp")}
 
   install-plugins: $(PROTOC_PLUGINS)
-  ifeq ($(SYSTEM),MINGW32)
-  	$(Q) false
-  else
   	$(E) "[INSTALL] Installing grpc protoc plugins"
   % for tgt in targets:
   % if tgt.build == 'protoc':
@@ -1332,7 +1339,6 @@
   	$(Q) $(INSTALL) $(BINDIR)/$(CONFIG)/${tgt.name} $(prefix)/bin/${tgt.name}
   % endif
   % endfor
-  endif
 
   install-pkg-config_c: pc_c pc_c_unsecure
   	$(E) "[INSTALL] Installing C pkg-config files"
@@ -1513,8 +1519,8 @@
         assert dep_lib, 'lib %s not found (in %s)' % (dep, lib.name)
         link_libs = link_libs + ' -l' + dep
         lib_deps = lib_deps + ' $(LIBDIR)/$(CONFIG)/lib' + dep + '.$(SHARED_EXT_' + lang_to_var[dep_lib.language] + ')'
-        mingw_libs = mingw_libs + ' -l' + dep + '-imp'
-        mingw_lib_deps = mingw_lib_deps + ' $(LIBDIR)/$(CONFIG)/' + dep + '.$(SHARED_EXT_' + lang_to_var[dep_lib.language] + ')'
+        mingw_libs = mingw_libs + ' -l' + dep + '$(SHARED_VERSION_' + lang_to_var[dep_lib.language] + ')-dll'
+        mingw_lib_deps = mingw_lib_deps + ' $(LIBDIR)/$(CONFIG)/' + dep + '$(SHARED_VERSION_' + lang_to_var[dep_lib.language] + ').$(SHARED_EXT_' + lang_to_var[dep_lib.language] + ')'
 
     security = lib.get('secure', 'check')
     if security == True:
@@ -1546,17 +1552,17 @@
   ${out_mingbase}.$(SHARED_EXT_${lang_to_var[lib.language]}): $(LIB${lib.name.upper()}_OBJS) ${mingw_lib_deps}
   	$(E) "[LD]      Linking $@"
   	$(Q) mkdir -p `dirname $@`
-  	$(Q) ${ld} ${ldflags} -L$(LIBDIR)/$(CONFIG) -shared ${lib.name}.def -Wl,--output-def=${out_mingbase}.def -Wl,--out-implib=${out_libbase}-dll.a -o ${out_mingbase}.$(SHARED_EXT_${lang_to_var[lib.language]}) ${common}${mingw_libs}
+  	$(Q) ${ld} ${ldflags} -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=${out_mingbase}.def -Wl,--out-implib=${out_libbase}-dll.a -o ${out_mingbase}.$(SHARED_EXT_${lang_to_var[lib.language]}) ${common}${mingw_libs}
   else
   ${out_libbase}.$(SHARED_EXT_${lang_to_var[lib.language]}): $(LIB${lib.name.upper()}_OBJS) ${lib_deps}
   	$(E) "[LD]      Linking $@"
   	$(Q) mkdir -p `dirname $@`
   ifeq ($(SYSTEM),Darwin)
-  	$(Q) ${ld} ${ldflags} -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT_${lang_to_var[lib.language]}) -dynamiclib -o ${out_libbase}.$(SHARED_EXT_${lang_to_var[lib.language]}) ${common}${link_libs}
+  	$(Q) ${ld} ${ldflags} -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]}).$(SHARED_EXT_${lang_to_var[lib.language]}) -dynamiclib -o ${out_libbase}.$(SHARED_EXT_${lang_to_var[lib.language]}) ${common}${link_libs}
   else
   	$(Q) ${ld} ${ldflags} -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,lib${lib.name}.so.${settings.core_version.major} -o ${out_libbase}.$(SHARED_EXT_${lang_to_var[lib.language]}) ${common}${link_libs}
-  	$(Q) ln -sf $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT_${lang_to_var[lib.language]}) ${out_libbase}.so.${settings.get(lang_to_var[lib.language].lower() + '_version').major}
-  	$(Q) ln -sf $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT_${lang_to_var[lib.language]}) ${out_libbase}.so
+  	$(Q) ln -sf $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]}).$(SHARED_EXT_${lang_to_var[lib.language]}) ${out_libbase}.so.${settings.get(lang_to_var[lib.language].lower() + '_version').major}
+  	$(Q) ln -sf $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION_${lang_to_var[lib.language]}).$(SHARED_EXT_${lang_to_var[lib.language]}) ${out_libbase}.so
   endif
   endif
   % endif
diff --git a/templates/binding.gyp.template b/templates/binding.gyp.template
index e6592acebbc520314277baea7f40af2186b506e2..851effc4f3dab98edf493cdb823f9babe4c22f32 100644
--- a/templates/binding.gyp.template
+++ b/templates/binding.gyp.template
@@ -39,18 +39,68 @@
   # Some of this file is built with the help of
   # https://n8.io/converting-a-c-library-to-gyp/
   {
+    'variables': {
+      'runtime%': 'node'
+    },
     'target_defaults': {
       'include_dirs': [
         '.',
         'include'
       ],
       'defines': [
-        'GRPC_UV'
+        'GPR_BACKWARDS_COMPATIBILITY_MODE'
       ],
       'conditions': [
+        ['runtime=="node"', {
+          'defines': [
+            'GRPC_UV'
+          ]
+        }],
+        ['OS!="win" and runtime=="electron"', {
+          "defines": [
+            'OPENSSL_NO_THREADS'
+          ]
+        }],
+        # This is the condition for using boringssl
+        ['OS=="win" or runtime=="electron"', {
+          "include_dirs": [
+            "third_party/boringssl/include"
+          ],
+          "defines": [
+            'OPENSSL_NO_ASM'
+          ]
+        }, {
+          # Based on logic above, we know that this must be a non-Windows system
+          'variables': {
+            # The output of "node --version" is "v[version]". We use cut to
+            # remove the first character.
+            'target%': '<!(node --version | cut -c2-)'
+          },
+          # Empirically, Node only exports ALPN symbols if its major version is >0.
+          # io.js always reports versions >0 and always exports ALPN symbols.
+          # Therefore, Node's major version will be truthy if and only if it
+          # supports ALPN. The target is "[major].[minor].[patch]". We split by
+          # periods and take the first field to get the major version.
+          'defines': [
+            'TSI_OPENSSL_ALPN_SUPPORT=<!(echo <(target) | cut -d. -f1)'
+          ],
+          'include_dirs': [
+            '<(node_root_dir)/deps/openssl/openssl/include',
+          ],
+          'conditions': [
+           ["target_arch=='ia32'", {
+               "include_dirs": [ "<(node_root_dir)/deps/openssl/config/piii" ]
+           }],
+           ["target_arch=='x64'", {
+               "include_dirs": [ "<(node_root_dir)/deps/openssl/config/k8" ]
+           }],
+           ["target_arch=='arm'", {
+               "include_dirs": [ "<(node_root_dir)/deps/openssl/config/arm" ]
+           }]
+          ]
+        }],
         ['OS == "win"', {
           "include_dirs": [
-            "third_party/boringssl/include",
             "third_party/zlib"
           ],
           "defines": [
@@ -60,8 +110,6 @@
             'UNICODE',
             '_UNICODE',
             'NOMINMAX',
-            'OPENSSL_NO_ASM',
-            'GPR_BACKWARDS_COMPATIBILITY_MODE'
           ],
           "msvs_settings": {
             'VCCLCompilerTool': {
@@ -74,21 +122,8 @@
         }, { # OS != "win"
           'variables': {
             'config': '<!(echo $CONFIG)',
-            # The output of "node --version" is "v[version]". We use cut to
-            # remove the first character.
-            'target%': '<!(node --version | cut -c2-)'
           },
-            # Empirically, Node only exports ALPN symbols if its major version is >0.
-            # io.js always reports versions >0 and always exports ALPN symbols.
-            # Therefore, Node's major version will be truthy if and only if it
-            # supports ALPN. The target is "[major].[minor].[patch]". We split by
-            # periods and take the first field to get the major version.
-          'defines': [
-            'TSI_OPENSSL_ALPN_SUPPORT=<!(echo <(target) | cut -d. -f1)',
-            'GPR_BACKWARDS_COMPATIBILITY_MODE'
-          ],
           'include_dirs': [
-            '<(node_root_dir)/deps/openssl/openssl/include',
             '<(node_root_dir)/deps/zlib'
           ],
           'conditions': [
@@ -103,21 +138,42 @@
                 '-fprofile-arcs'
               ]
             }
-           ],
-           ["target_arch=='ia32'", {
-               "include_dirs": [ "<(node_root_dir)/deps/openssl/config/piii" ]
-           }],
-           ["target_arch=='x64'", {
-               "include_dirs": [ "<(node_root_dir)/deps/openssl/config/k8" ]
-           }],
-           ["target_arch=='arm'", {
-               "include_dirs": [ "<(node_root_dir)/deps/openssl/config/arm" ]
-           }]
+           ]
           ]
         }]
       ]
     },
     'conditions': [
+      ['OS=="win" or runtime=="electron"', {
+        'targets': [
+          % for module in node_modules:
+          % for lib in libs:
+          % if lib.name in module.transitive_deps and lib.name == 'boringssl':
+          {
+            'cflags': [
+              '-std=c99',
+              '-Wall',
+              '-Werror'
+            ],
+            'target_name': '${lib.name}',
+            'product_prefix': 'lib',
+            'type': 'static_library',
+            'dependencies': [
+              % for dep in getattr(lib, 'deps', []):
+              '${dep}',
+              % endfor
+            ],
+            'sources': [
+              % for source in lib.src:
+              '${source}',
+              % endfor
+            ]
+          },
+          % endif
+          % endfor
+          % endfor
+        ]
+      }],
       ['OS == "win"', {
         'targets': [
           {
@@ -143,10 +199,10 @@
               }
             ]
           },
-          # Only want to compile BoringSSL and zlib under Windows
+          # Only want to compile zlib under Windows
           % for module in node_modules:
           % for lib in libs:
-          % if lib.name in module.transitive_deps and lib.name in ('boringssl', 'z'):
+          % if lib.name in module.transitive_deps and lib.name == 'z':
           {
             'cflags': [
               '-std=c99',
@@ -223,6 +279,15 @@
           '-g'
         ],
         "conditions": [
+          ['OS=="win" or runtime=="electron"', {
+            'dependencies': [
+              % for dep in getattr(module, 'deps', []):
+              % if dep == 'boringssl':
+              "${dep}",
+              % endif
+              % endfor
+            ]
+          }],
           ['OS=="mac"', {
             'xcode_settings': {
               'MACOSX_DEPLOYMENT_TARGET': '10.9',
@@ -235,7 +300,7 @@
           ['OS=="win"', {
             'dependencies': [
               % for dep in getattr(module, 'deps', []):
-              % if dep in ('boringssl', 'z'):
+              % if dep == 'z':
               "${dep}",
               % endif
               % endfor
diff --git a/templates/build_config.rb.template b/templates/build_config.rb.template
new file mode 100644
index 0000000000000000000000000000000000000000..0d9191b1a0718fd14891cac54e64bff60f092977
--- /dev/null
+++ b/templates/build_config.rb.template
@@ -0,0 +1,34 @@
+%YAML 1.2
+--- |
+  # Copyright 2017, Google Inc.
+  # All rights reserved.
+  #
+  # Redistribution and use in source and binary forms, with or without
+  # modification, are permitted provided that the following conditions are
+  # met:
+  #
+  #     * Redistributions of source code must retain the above copyright
+  # notice, this list of conditions and the following disclaimer.
+  #     * Redistributions in binary form must reproduce the above
+  # copyright notice, this list of conditions and the following disclaimer
+  # in the documentation and/or other materials provided with the
+  # distribution.
+  #     * Neither the name of Google Inc. nor the names of its
+  # contributors may be used to endorse or promote products derived from
+  # this software without specific prior written permission.
+  #
+  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+  module GrpcBuildConfig
+    CORE_WINDOWS_DLL = '/tmp/libs/opt/grpc-${settings.core_version.major}.dll'
+  end
diff --git a/templates/config.m4.template b/templates/config.m4.template
index 5847d456f51c89c941065e04344f86ce0a2f4469..f5f1d23088dadeaedff737fc148349a366a6d484 100644
--- a/templates/config.m4.template
+++ b/templates/config.m4.template
@@ -7,9 +7,9 @@
     dnl Write more examples of tests here...
 
     dnl # --with-grpc -> add include path
-    PHP_ADD_INCLUDE(../../grpc/include)
-    PHP_ADD_INCLUDE(../../grpc/src/php/ext/grpc)
-    PHP_ADD_INCLUDE(../../grpc/third_party/boringssl/include)
+    PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/include)
+    PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/src/php/ext/grpc)
+    PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/boringssl/include)
 
     LIBS="-lpthread $LIBS"
 
diff --git a/templates/gRPC-Core.podspec.template b/templates/gRPC-Core.podspec.template
index fbad1a3f709d96155f662921ae48f82b1f66108e..1b97d18f1637472ccdc44ca08c21069e9619666b 100644
--- a/templates/gRPC-Core.podspec.template
+++ b/templates/gRPC-Core.podspec.template
@@ -62,7 +62,7 @@
   %>
   Pod::Spec.new do |s|
     s.name     = 'gRPC-Core'
-    version = '1.0.1'
+    version = '1.0.2'
     s.version  = version
     s.summary  = 'Core cross-platform gRPC library, written in C'
     s.homepage = 'http://www.grpc.io'
@@ -71,7 +71,9 @@
 
     s.source = {
       :git => 'https://github.com/grpc/grpc.git',
-      :tag => "v#{version}",
+      # TODO(mxyan): Change back to "v#{version}" for next release
+      #:tag => "v#{version}",
+      :tag => "objective-c-v#{version}",
       # TODO(jcanizales): Depend explicitly on the nanopb pod, and disable submodules.
       :submodules => true,
     }
diff --git a/templates/grpc.gemspec.template b/templates/grpc.gemspec.template
index 62d61b75c1df74fbbdfa7ad58f2c44c6d77b1c9e..82fbb69008853f1c19515182af266b6433a839a5 100644
--- a/templates/grpc.gemspec.template
+++ b/templates/grpc.gemspec.template
@@ -29,7 +29,7 @@
     s.require_paths = %w( src/ruby/bin src/ruby/lib src/ruby/pb )
     s.platform      = Gem::Platform::RUBY
 
-    s.add_dependency 'google-protobuf', '~> 3.0.2'
+    s.add_dependency 'google-protobuf', '~> 3.1.0'
     s.add_dependency 'googleauth',      '~> 0.5.1'
 
     s.add_development_dependency 'bundler',            '~> 1.9'
diff --git a/templates/package.json.template b/templates/package.json.template
index 81f39d27f518361064cc84642c857771b007758c..316c28e478efeaf4239dd5778851885459e35d78 100644
--- a/templates/package.json.template
+++ b/templates/package.json.template
@@ -23,6 +23,7 @@
     "scripts": {
       "lint": "node ./node_modules/jshint/bin/jshint src/node/src src/node/test src/node/interop src/node/index.js --exclude-path=src/node/.jshintignore",
       "test": "./node_modules/.bin/mocha src/node/test && npm run-script lint",
+      "electron-build": "./node_modules/.bin/node-pre-gyp configure build --runtime=electron --disturl=https://atom.io/download/atom-shell",
       "gen_docs": "./node_modules/.bin/jsdoc -c src/node/jsdoc_conf.json",
       "coverage": "./node_modules/.bin/istanbul cover ./node_modules/.bin/_mocha src/node/test",
       "install": "./node_modules/.bin/node-pre-gyp install --fallback-to-build"
@@ -40,6 +41,7 @@
     "devDependencies": {
       "async": "^2.0.1",
       "body-parser": "^1.15.2",
+      "electron-mocha": "^3.1.1",
       "express": "^4.14.0",
       "google-auth-library": "^0.9.2",
       "google-protobuf": "^3.0.0",
@@ -52,7 +54,7 @@
       "poisson-process": "^0.2.1"
     },
     "engines": {
-      "node": ">=0.12.0"
+      "node": ">=1.1.0"
     },
     "binary": {
       "module_name": "grpc_node",
diff --git a/templates/package.xml.template b/templates/package.xml.template
index 32ed3b633e801e86922fe9ccdfaebcd06380419b..80f1a1fe974c76cbdefc13a9bc8b3ba198c59b7f 100644
--- a/templates/package.xml.template
+++ b/templates/package.xml.template
@@ -12,19 +12,20 @@
     <email>grpc-packages@google.com</email>
     <active>yes</active>
    </lead>
-   <date>2016-08-22</date>
+   <date>2017-01-13</date>
    <time>16:06:07</time>
    <version>
     <release>${settings.php_version.php()}</release>
     <api>${settings.php_version.php()}</api>
    </version>
    <stability>
-    <release>stable</release>
-    <api>stable</api>
+    <release>beta</release>
+    <api>beta</api>
    </stability>
    <license>BSD</license>
    <notes>
-  - Reject metadata keys which are not legal #7881
+  - PHP Proto3 adoption #8179
+  - Various bug fixes     
    </notes>
    <contents>
     <dir baseinstalldir="/" name="/">
@@ -281,18 +282,49 @@
     </release>
     <release>
      <version>
-      <release>${settings.php_version.php()}</release>
-      <api>${settings.php_version.php()}</api>
+      <release>1.0.1RC1</release>
+      <api>1.0.1RC1</api>
+     </version>
+     <stability>
+      <release>beta</release>
+      <api>beta</api>
+     </stability>
+     <date>2016-10-06</date>
+     <license>BSD</license>
+     <notes>
+  - Reject metadata keys which are not legal #7881
+     </notes>
+    </release>
+    <release>
+     <version>
+      <release>1.0.1</release>
+      <api>1.0.1</api>
      </version>
      <stability>
       <release>stable</release>
       <api>stable</api>
      </stability>
-     <date>2016-08-22</date>
+     <date>2016-10-27</date>
      <license>BSD</license>
      <notes>
   - Reject metadata keys which are not legal #7881
      </notes>
     </release>
+    <release>
+     <version>
+      <release>1.1.0dev</release>
+      <api>1.1.0dev</api>
+     </version>
+     <stability>
+      <release>beta</release>
+      <api>beta</api>
+     </stability>
+     <date>2017-01-13</date>
+     <license>BSD</license>
+     <notes>
+  - PHP Proto3 adoption #8179
+  - Various bug fixes     
+     </notes>
+    </release>
    </changelog>
   </package>
diff --git a/templates/tools/dockerfile/clang_format.include b/templates/tools/dockerfile/clang_format.include
new file mode 100644
index 0000000000000000000000000000000000000000..9a2b60ba8c47bd47906d2279203d472e7ed4234c
--- /dev/null
+++ b/templates/tools/dockerfile/clang_format.include
@@ -0,0 +1,5 @@
+RUN apt-get update && apt-get -y install wget
+RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
+RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
+RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
+RUN apt-get update && apt-get -y install clang-format-3.8
diff --git a/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template b/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template
new file mode 100644
index 0000000000000000000000000000000000000000..8360fc121c1803828ef96e1e24e3bb942ecd1020
--- /dev/null
+++ b/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template
@@ -0,0 +1,37 @@
+%YAML 1.2
+--- |
+  # Copyright 2015, Google Inc.
+  # All rights reserved.
+  #
+  # Redistribution and use in source and binary forms, with or without
+  # modification, are permitted provided that the following conditions are
+  # met:
+  #
+  #     * Redistributions of source code must retain the above copyright
+  # notice, this list of conditions and the following disclaimer.
+  #     * Redistributions in binary form must reproduce the above
+  # copyright notice, this list of conditions and the following disclaimer
+  # in the documentation and/or other materials provided with the
+  # distribution.
+  #     * Neither the name of Google Inc. nor the names of its
+  # contributors may be used to endorse or promote products derived from
+  # this software without specific prior written permission.
+  #
+  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  
+  FROM ubuntu:15.10
+  
+  <%include file="../clang_format.include"/>
+  ADD clang_format_all_the_things.sh /
+  CMD ["echo 'Run with tools/distrib/clang_format_code.sh'"]
+  
diff --git a/templates/tools/dockerfile/test/bazel/Dockerfile.template b/templates/tools/dockerfile/test/bazel/Dockerfile.template
new file mode 100644
index 0000000000000000000000000000000000000000..82f90bef68153074618c64516ee187421a0095db
--- /dev/null
+++ b/templates/tools/dockerfile/test/bazel/Dockerfile.template
@@ -0,0 +1,48 @@
+%YAML 1.2
+--- |
+  # Copyright 2015, Google Inc.
+  # All rights reserved.
+  #
+  # Redistribution and use in source and binary forms, with or without
+  # modification, are permitted provided that the following conditions are
+  # met:
+  #
+  #     * Redistributions of source code must retain the above copyright
+  # notice, this list of conditions and the following disclaimer.
+  #     * Redistributions in binary form must reproduce the above
+  # copyright notice, this list of conditions and the following disclaimer
+  # in the documentation and/or other materials provided with the
+  # distribution.
+  #     * Neither the name of Google Inc. nor the names of its
+  # contributors may be used to endorse or promote products derived from
+  # this software without specific prior written permission.
+  #
+  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  
+  FROM ubuntu:15.10
+  
+  <%include file="../../apt_get_basic.include"/>
+
+  #========================
+  # Bazel installation
+  RUN apt-get install -y software-properties-common g++
+  RUN echo "deb [arch=amd64] http://storage.googleapis.com/bazel-apt stable jdk1.8" > /etc/apt/sources.list.d/bazel.list
+  RUN curl https://bazel.build/bazel-release.pub.gpg | apt-key add -
+  RUN apt-get -y update
+  RUN apt-get -y install bazel
+
+  RUN mkdir -p /var/local/jenkins
+  
+  # Define the default command.
+  CMD ["bash"]
+  
diff --git a/templates/tools/dockerfile/test/node_jessie_x64/Dockerfile.template b/templates/tools/dockerfile/test/node_jessie_x64/Dockerfile.template
index 72b098f0c2048666ee5b153acf2040afa92a8b97..ceaa9aa5abccbe880db12cfd64a407870f39066b 100644
--- a/templates/tools/dockerfile/test/node_jessie_x64/Dockerfile.template
+++ b/templates/tools/dockerfile/test/node_jessie_x64/Dockerfile.template
@@ -28,10 +28,21 @@
   # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  
+
   FROM debian:jessie
-  
+
   <%include file="../../apt_get_basic.include"/>
+
+  # Install Electron apt dependencies
+  RUN apt-get update && apt-get install -y ${'\\'}
+    libasound2 ${'\\'}
+    libgconf-2-4 ${'\\'}
+    libgtk2.0-0 ${'\\'}
+    libnss3 ${'\\'}
+    libxss1 ${'\\'}
+    libxtst6 ${'\\'}
+    xvfb
+
   <%include file="../../python_deps.include"/>
   <%include file="../../node_deps.include"/>
   <%include file="../../run_tests_addons.include"/>
diff --git a/templates/tools/dockerfile/test/sanity/Dockerfile.template b/templates/tools/dockerfile/test/sanity/Dockerfile.template
index 01683539334cd0826ddba1d8192a65ab5c6b4b61..8617666b21eb2f36395794caf85fa90d4d330f5f 100644
--- a/templates/tools/dockerfile/test/sanity/Dockerfile.template
+++ b/templates/tools/dockerfile/test/sanity/Dockerfile.template
@@ -52,18 +52,12 @@
   # ./compile.sh without a local protoc dependency
   # TODO(mattkwong): install dependencies to support latest Bazel version if newer
   # version is needed
-  RUN git clone https://github.com/bazelbuild/bazel.git /bazel && \
+  RUN git clone https://github.com/bazelbuild/bazel.git /bazel && ${"\\"}
     cd /bazel && git checkout tags/0.4.1 && ./compile.sh
   RUN ln -s /bazel/output/bazel /bin/
   
-  #===================
-  # Docker "inception"
-  # Note this is quite the ugly hack.
-  # This makes sure that the docker binary we inject has its dependencies.
-  RUN curl https://get.docker.com/ | sh
-  RUN apt-get remove --purge -y docker-engine
-  
-  RUN mkdir /var/local/jenkins
+  <%include file="../../clang_format.include"/>
+  <%include file="../../run_tests_addons.include"/>
   
   # Define the default command.
   CMD ["bash"]
diff --git a/templates/tools/doxygen/Doxyfile.include b/templates/tools/doxygen/Doxyfile.include
index 8b0c528c1f68f5eee14b6609d5cab25c6fe0fc92..e26ae2b948ae19f4c0e8e0028fd94a5e242170d3 100644
--- a/templates/tools/doxygen/Doxyfile.include
+++ b/templates/tools/doxygen/Doxyfile.include
@@ -8,7 +8,10 @@
 <%def name="gen_doxyfile(libnames, packagename, collection, internal)">
 <%
   import itertools
+  import glob
+  import os
   targets = []
+  docpackage = packagename.replace('+', 'p').lower()
   for libname in libnames:
     target = None
     for p in collection:
@@ -16,6 +19,11 @@
         target = p
     assert(target)
     targets.append(target)
+  srcdoc = []
+  for dirpath, dirnames, filenames in os.walk('src/%s' % docpackage):
+    for filename in filenames:
+      if os.path.splitext(filename)[1] == '.md':
+        srcdoc.append(os.path.join(dirpath, filename))
 %>
 # Doxyfile 1.8.9.1
 
@@ -778,13 +786,20 @@ WARN_LOGFILE           =
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = ${' \\\n'.join(
-                               itertools.chain.from_iterable(
-			           target.public_headers +
-				   ([]
-				    if not internal
-				    else target.headers + target.src)
-			       for target in targets))}
+INPUT                  = ${
+    ' \\\n'.join(sorted(
+        itertools.chain(
+            itertools.chain.from_iterable(
+    			      target.public_headers +
+    				    ([]
+    				     if not internal
+    				     else target.headers + target.src)
+    			      for target in targets),
+            glob.glob('doc/*.md'),
+            glob.glob('doc/%s/*.md' % docpackage),
+            [] if not internal else srcdoc)
+    ))
+}
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/templates/tools/run_tests/configs.json.template b/templates/tools/run_tests/generated/configs.json.template
similarity index 100%
rename from templates/tools/run_tests/configs.json.template
rename to templates/tools/run_tests/generated/configs.json.template
diff --git a/templates/tools/run_tests/sources_and_headers.json.template b/templates/tools/run_tests/generated/sources_and_headers.json.template
similarity index 100%
rename from templates/tools/run_tests/sources_and_headers.json.template
rename to templates/tools/run_tests/generated/sources_and_headers.json.template
diff --git a/templates/tools/run_tests/tests.json.template b/templates/tools/run_tests/generated/tests.json.template
similarity index 100%
rename from templates/tools/run_tests/tests.json.template
rename to templates/tools/run_tests/generated/tests.json.template
diff --git a/templates/vsprojects/generate_debug_projects.sh b/templates/vsprojects/generate_debug_projects.sh
deleted file mode 100755
index f103ebe01a926af84bf8cfa61bff257b39d936eb..0000000000000000000000000000000000000000
--- a/templates/vsprojects/generate_debug_projects.sh
+++ /dev/null
@@ -1,76 +0,0 @@
-#!/bin/sh
-
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# To properly use this, you'll need to add:
-#
-#    "debug": true
-#
-# to build.json
-
-cd `dirname $0`/../..
-
-git add .               #because we're using "git diff" to find changes to grpc.sln and then make files based on those changes, this prevents this file or other files from possibly being found in the diff
-
-./tools/buildgen/generate_projects-old.sh
-
-line_number=0
-
-git diff |
-grep -A2 \\+Project |       #find "Project" immediately after a backslash (escaped), plus 2 additional lines to capture the "libs = ", plus 1 line of "--".  matches will come from the generated grpc.sln
-while read p ; do
-  line_number=$((line_number + 1))
-  if [ "$line_number" -gt "4" ]; then
-    line_number=1;
-  fi
-  echo $line_number
-  echo $p
-  if [ "$line_number" -eq "1" ]; then
-    project_name=$(echo "$p" | cut -d\" -f 4)          #sed: extract line N only; cut with delimiter: ".  select only field 4
-  fi
-  if [ "$line_number" -eq "3" ]; then
-    lib_setting=$(echo "$p" | cut -d\" -f 2)          #
-    echo "project_name"
-    echo $project_name
-    echo "lib_setting"
-    echo $lib_setting
-    mkdir -p templates/vsprojects/$project_name
-    if [ "$lib_setting" = "True" ]; then
-      echo "lib: true"
-      echo '<%namespace file="../vcxproj_defs.include" import="gen_project"/>${gen_project("'$project_name'", libs)}' > templates/vsprojects/$project_name/$project_name.vcxproj.template
-    else
-      echo "lib: not true"
-      echo '<%namespace file="../vcxproj_defs.include" import="gen_project"/>${gen_project("'$project_name'", targets)}' > templates/vsprojects/$project_name/$project_name.vcxproj.template
-    fi
-  fi
- # sleep .5     #for testing
-done
-
-./tools/buildgen/generate_projects-old.sh
diff --git a/templates/vsprojects/grpc.sln.template b/templates/vsprojects/grpc.sln.template
index ded98383dad0e24bd97069d66fc69bef74fd4811..0b28e936be2514d26e5a00157c92eadaf7370e1b 100644
--- a/templates/vsprojects/grpc.sln.template
+++ b/templates/vsprojects/grpc.sln.template
@@ -2,6 +2,6 @@
 --- |
   <%namespace file="sln_defs.include" import="gen_solution"/>\
   <%
-  solution_projects = [p for p in vsprojects if p.build not in ['protoc', 'test', 'fuzzer'] and p.language in ['c', 'c++'] and p.vs_proj_dir == '.' and not (p.build == 'private' and p.language == 'c++')]
+  solution_projects = [p for p in vsprojects if p.build not in ['protoc', 'test', 'fuzzer'] and p.language in ['c', 'c++'] and p.vs_proj_dir == '.' and not (p.build == 'private' and p.language == 'c++') and not p.name in ['z', 'boringssl', 'grpc++_reflection']]
   %>\
   ${gen_solution(solution_projects, use_dlls='yes')}
diff --git a/test/core/bad_client/BUILD b/test/core/bad_client/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..6b06955efe7d5ce5a4fdedd455e2c9eafe85529c
--- /dev/null
+++ b/test/core/bad_client/BUILD
@@ -0,0 +1,34 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+load(":generate_tests.bzl", "grpc_bad_client_tests")
+
+grpc_bad_client_tests()
diff --git a/test/core/bad_client/bad_client.c b/test/core/bad_client/bad_client.c
index 07fcd995d7bc79db4688565c63abad9d9f88bb86..a84086804cdb0e84f81032c50db1ccc2d9f616cf 100644
--- a/test/core/bad_client/bad_client.c
+++ b/test/core/bad_client/bad_client.c
@@ -33,15 +33,18 @@
 
 #include "test/core/bad_client/bad_client.h"
 
+#include <stdio.h>
+
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/thd.h>
-#include <stdio.h>
+
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/channel/http_server_filter.h"
 #include "src/core/lib/iomgr/endpoint_pair.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/murmur_hash.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/completion_queue.h"
@@ -117,7 +120,7 @@ void grpc_run_bad_client_test(
   grpc_resource_quota *resource_quota =
       grpc_resource_quota_create("bad_client_test");
   sfd = grpc_iomgr_create_endpoint_pair("fixture", resource_quota, 65536);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
 
   /* Create server, completion events */
   a.server = grpc_server_create(NULL, NULL);
@@ -148,7 +151,8 @@ void grpc_run_bad_client_test(
 
   grpc_slice_buffer_init(&outgoing);
   grpc_slice_buffer_add(&outgoing, slice);
-  grpc_closure_init(&done_write_closure, done_write, &a);
+  grpc_closure_init(&done_write_closure, done_write, &a,
+                    grpc_schedule_on_exec_ctx);
 
   /* Write data */
   grpc_endpoint_write(&exec_ctx, sfd.client, &outgoing, &done_write_closure);
@@ -175,13 +179,14 @@ void grpc_run_bad_client_test(
       grpc_slice_buffer_init(&args.incoming);
       gpr_event_init(&args.read_done);
       grpc_closure read_done_closure;
-      grpc_closure_init(&read_done_closure, read_done, &args);
+      grpc_closure_init(&read_done_closure, read_done, &args,
+                        grpc_schedule_on_exec_ctx);
       grpc_endpoint_read(&exec_ctx, sfd.client, &args.incoming,
                          &read_done_closure);
       grpc_exec_ctx_finish(&exec_ctx);
       GPR_ASSERT(
           gpr_event_wait(&args.read_done, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)));
-      grpc_slice_buffer_destroy(&args.incoming);
+      grpc_slice_buffer_destroy_internal(&exec_ctx, &args.incoming);
     }
     // Shutdown.
     grpc_endpoint_shutdown(&exec_ctx, sfd.client);
@@ -194,7 +199,7 @@ void grpc_run_bad_client_test(
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(a.server);
   grpc_completion_queue_destroy(a.cq);
-  grpc_slice_buffer_destroy(&outgoing);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &outgoing);
 
   grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
diff --git a/test/core/bad_client/generate_tests.bzl b/test/core/bad_client/generate_tests.bzl
new file mode 100755
index 0000000000000000000000000000000000000000..694ddeeab615547ad3ce03e12b0dc18f716e96e8
--- /dev/null
+++ b/test/core/bad_client/generate_tests.bzl
@@ -0,0 +1,68 @@
+#!/usr/bin/env python2.7
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+"""Generates the appropriate build.json data for all the bad_client tests."""
+
+
+def test_options():
+  return struct()
+
+
+# maps test names to options
+BAD_CLIENT_TESTS = {
+    'badreq': test_options(),
+    'connection_prefix': test_options(),
+    'headers': test_options(),
+    'initial_settings_frame': test_options(),
+    'head_of_line_blocking': test_options(),
+    'large_metadata': test_options(),
+    'server_registered_method': test_options(),
+    'simple_request': test_options(),
+    'window_overflow': test_options(),
+    'unknown_frame': test_options(),
+}
+
+def grpc_bad_client_tests():
+  native.cc_library(
+      name = 'bad_client_test',
+      srcs = ['bad_client.c'],
+      hdrs = ['bad_client.h'],
+      copts = ['-std=c99'],
+      deps = ['//test/core/util:grpc_test_util', '//:grpc', '//:gpr', '//test/core/end2end:cq_verifier']
+  )
+  for t, topt in BAD_CLIENT_TESTS.items():
+    native.cc_test(
+        name = '%s_bad_client_test' % t,
+        srcs = ['tests/%s.c' % t],
+        deps = [':bad_client_test'],
+        copts = ['-std=c99'],
+    )
+
diff --git a/test/core/bad_ssl/BUILD b/test/core/bad_ssl/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..288788a52d37e57a336dbcceda41802775f97d55
--- /dev/null
+++ b/test/core/bad_ssl/BUILD
@@ -0,0 +1,34 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+load(":generate_tests.bzl", "grpc_bad_ssl_tests")
+
+grpc_bad_ssl_tests()
diff --git a/test/core/bad_ssl/generate_tests.bzl b/test/core/bad_ssl/generate_tests.bzl
new file mode 100755
index 0000000000000000000000000000000000000000..78474bc1cab42064a69f17a6b3e157ddbf6082af
--- /dev/null
+++ b/test/core/bad_ssl/generate_tests.bzl
@@ -0,0 +1,52 @@
+#!/usr/bin/env python2.7
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+def test_options():
+  return struct()
+
+
+# maps test names to options
+BAD_SSL_TESTS = ['cert', 'alpn']
+
+def grpc_bad_ssl_tests():
+  native.cc_library(
+      name = 'bad_ssl_test_server',
+      srcs = ['server_common.c'],
+      hdrs = ['server_common.h'],
+      deps = ['//test/core/util:grpc_test_util', '//:grpc', '//test/core/end2end:ssl_test_data']
+  )
+  for t in BAD_SSL_TESTS:
+    native.cc_test(
+        name = 'bad_ssl_%s_server' % t,
+        srcs = ['servers/%s.c' % t],
+        deps = [':bad_ssl_test_server'],
+    )
+
diff --git a/test/core/channel/channel_args_test.c b/test/core/channel/channel_args_test.c
index d3eb969f0984030a65d33b967aaf5daba6c3d1a3..b2c41652a49a9e04d4b46d616681138cd37c6b1d 100644
--- a/test/core/channel/channel_args_test.c
+++ b/test/core/channel/channel_args_test.c
@@ -37,10 +37,12 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/channel/channel_args.h"
-
+#include "src/core/lib/iomgr/exec_ctx.h"
 #include "test/core/util/test_config.h"
 
 static void test_create(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
   grpc_arg arg_int;
   grpc_arg arg_string;
   grpc_arg to_add[2];
@@ -68,10 +70,12 @@ static void test_create(void) {
   GPR_ASSERT(strcmp(ch_args->args[1].value.string, arg_string.value.string) ==
              0);
 
-  grpc_channel_args_destroy(ch_args);
+  grpc_channel_args_destroy(&exec_ctx, ch_args);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_set_compression_algorithm(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_channel_args *ch_args;
 
   ch_args =
@@ -81,10 +85,12 @@ static void test_set_compression_algorithm(void) {
                     GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM) == 0);
   GPR_ASSERT(ch_args->args[0].type == GRPC_ARG_INTEGER);
 
-  grpc_channel_args_destroy(ch_args);
+  grpc_channel_args_destroy(&exec_ctx, ch_args);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_compression_algorithm_states(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_channel_args *ch_args, *ch_args_wo_gzip, *ch_args_wo_gzip_deflate;
   unsigned states_bitset;
   size_t i;
@@ -100,10 +106,10 @@ static void test_compression_algorithm_states(void) {
 
   /* disable gzip and deflate */
   ch_args_wo_gzip = grpc_channel_args_compression_algorithm_set_state(
-      &ch_args, GRPC_COMPRESS_GZIP, 0);
+      &exec_ctx, &ch_args, GRPC_COMPRESS_GZIP, 0);
   GPR_ASSERT(ch_args == ch_args_wo_gzip);
   ch_args_wo_gzip_deflate = grpc_channel_args_compression_algorithm_set_state(
-      &ch_args_wo_gzip, GRPC_COMPRESS_DEFLATE, 0);
+      &exec_ctx, &ch_args_wo_gzip, GRPC_COMPRESS_DEFLATE, 0);
   GPR_ASSERT(ch_args_wo_gzip == ch_args_wo_gzip_deflate);
 
   states_bitset = (unsigned)grpc_channel_args_compression_algorithm_get_states(
@@ -118,7 +124,7 @@ static void test_compression_algorithm_states(void) {
 
   /* re-enabled gzip only */
   ch_args_wo_gzip = grpc_channel_args_compression_algorithm_set_state(
-      &ch_args_wo_gzip_deflate, GRPC_COMPRESS_GZIP, 1);
+      &exec_ctx, &ch_args_wo_gzip_deflate, GRPC_COMPRESS_GZIP, 1);
   GPR_ASSERT(ch_args_wo_gzip == ch_args_wo_gzip_deflate);
 
   states_bitset = (unsigned)grpc_channel_args_compression_algorithm_get_states(
@@ -131,7 +137,8 @@ static void test_compression_algorithm_states(void) {
     }
   }
 
-  grpc_channel_args_destroy(ch_args);
+  grpc_channel_args_destroy(&exec_ctx, ch_args);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_set_socket_mutator(void) {
@@ -144,7 +151,11 @@ static void test_set_socket_mutator(void) {
   GPR_ASSERT(strcmp(ch_args->args[0].key, GRPC_ARG_SOCKET_MUTATOR) == 0);
   GPR_ASSERT(ch_args->args[0].type == GRPC_ARG_POINTER);
 
-  grpc_channel_args_destroy(ch_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, ch_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 }
 
 int main(int argc, char **argv) {
diff --git a/test/core/channel/channel_stack_test.c b/test/core/channel/channel_stack_test.c
index 0840820cca96ed9774aabed323c1d8ced8ed64d1..080c56f1349380cf5364d14ccde37cc1609df961 100644
--- a/test/core/channel/channel_stack_test.c
+++ b/test/core/channel/channel_stack_test.c
@@ -41,9 +41,9 @@
 
 #include "test/core/util/test_config.h"
 
-static void channel_init_func(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *channel_init_func(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   GPR_ASSERT(args->channel_args->num_args == 1);
   GPR_ASSERT(args->channel_args->args[0].type == GRPC_ARG_INTEGER);
   GPR_ASSERT(0 == strcmp(args->channel_args->args[0].key, "test_key"));
@@ -51,6 +51,7 @@ static void channel_init_func(grpc_exec_ctx *exec_ctx,
   GPR_ASSERT(args->is_first);
   GPR_ASSERT(args->is_last);
   *(int *)(elem->channel_data) = 0;
+  return GRPC_ERROR_NONE;
 }
 
 static grpc_error *call_init_func(grpc_exec_ctx *exec_ctx,
@@ -156,8 +157,8 @@ static void test_create_channel_stack(void) {
 
   GRPC_CHANNEL_STACK_UNREF(&exec_ctx, channel_stack, "done");
 
+  GRPC_MDSTR_UNREF(&exec_ctx, path);
   grpc_exec_ctx_finish(&exec_ctx);
-  GRPC_MDSTR_UNREF(path);
 }
 
 int main(int argc, char **argv) {
diff --git a/test/core/client_channel/lb_policies_test.c b/test/core/client_channel/lb_policies_test.c
index 6e4058fc2145756c4bdc00f04894bfbbfbc72e28..f46982a3879b945a1dfd2e812344c4494fa9a735 100644
--- a/test/core/client_channel/lb_policies_test.c
+++ b/test/core/client_channel/lb_policies_test.c
@@ -241,6 +241,8 @@ static request_sequences request_sequences_create(size_t n) {
   res.n = n;
   res.connections = gpr_malloc(sizeof(*res.connections) * n);
   res.connectivity_states = gpr_malloc(sizeof(*res.connectivity_states) * n);
+  memset(res.connections, 0, sizeof(*res.connections) * n);
+  memset(res.connectivity_states, 0, sizeof(*res.connectivity_states) * n);
   return res;
 }
 
@@ -643,7 +645,11 @@ static void test_get_channel_info() {
   arg.value.string = "{\"loadBalancingPolicy\": \"ROUND_ROBIN\"}";
   grpc_channel_args *args = grpc_channel_args_copy_and_add(NULL, &arg, 1);
   channel = grpc_insecure_channel_create("ipv4:127.0.0.1:1234", args, NULL);
-  grpc_channel_args_destroy(args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   // Ensures that resolver returns.
   grpc_channel_check_connectivity_state(channel, true /* try_to_connect */);
   // Now request the service config again.
@@ -782,17 +788,15 @@ static void verify_total_carnage_round_robin(const servers_fixture *f,
     }
   }
 
-  /* no server is ever available. The persistent state is TRANSIENT_FAILURE. May
-   * also be CONNECTING if, under load, this check took too long to run and some
-   * subchannel already transitioned to retrying. */
+  /* No server is ever available. There should be no READY states (or SHUTDOWN).
+   * Note that all other states (IDLE, CONNECTING, TRANSIENT_FAILURE) are still
+   * possible, as the policy transitions while attempting to reconnect. */
   for (size_t i = 0; i < sequences->n; i++) {
     const grpc_connectivity_state actual = sequences->connectivity_states[i];
-    if (actual != GRPC_CHANNEL_TRANSIENT_FAILURE &&
-        actual != GRPC_CHANNEL_CONNECTING) {
+    if (actual == GRPC_CHANNEL_READY || actual == GRPC_CHANNEL_SHUTDOWN) {
       gpr_log(GPR_ERROR,
-              "CONNECTIVITY STATUS SEQUENCE FAILURE: expected "
-              "GRPC_CHANNEL_TRANSIENT_FAILURE or GRPC_CHANNEL_CONNECTING, got "
-              "'%s' at iteration #%d",
+              "CONNECTIVITY STATUS SEQUENCE FAILURE: got unexpected state "
+              "'%s' at iteration #%d.",
               grpc_connectivity_state_name(actual), (int)i);
       abort();
     }
@@ -841,17 +845,15 @@ static void verify_partial_carnage_round_robin(
     abort();
   }
 
-  /* ... and that the last one should be TRANSIENT_FAILURE, after all servers
-   * are gone. May also be CONNECTING if, under load, this check took too long
-   * to run and the subchannel already transitioned to retrying. */
+  /* ... and that the last one shouldn't be READY (or SHUTDOWN): all servers are
+   * gone. It may be all other states (IDLE, CONNECTING, TRANSIENT_FAILURE), as
+   * the policy transitions while attempting to reconnect. */
   actual = sequences->connectivity_states[num_iters - 1];
   for (i = 0; i < sequences->n; i++) {
-    if (actual != GRPC_CHANNEL_TRANSIENT_FAILURE &&
-        actual != GRPC_CHANNEL_CONNECTING) {
+    if (actual == GRPC_CHANNEL_READY || actual == GRPC_CHANNEL_SHUTDOWN) {
       gpr_log(GPR_ERROR,
-              "CONNECTIVITY STATUS SEQUENCE FAILURE: expected "
-              "GRPC_CHANNEL_TRANSIENT_FAILURE or GRPC_CHANNEL_CONNECTING, got "
-              "'%s' at iteration #%d",
+              "CONNECTIVITY STATUS SEQUENCE FAILURE: got unexpected state "
+              "'%s' at iteration #%d.",
               grpc_connectivity_state_name(actual), (int)i);
       abort();
     }
@@ -948,8 +950,8 @@ int main(int argc, char **argv) {
   const size_t NUM_ITERS = 10;
   const size_t NUM_SERVERS = 4;
 
-  grpc_test_init(argc, argv);
   grpc_init();
+  grpc_test_init(argc, argv);
   grpc_tracer_set_enabled("round_robin", 1);
 
   GPR_ASSERT(grpc_lb_policy_create(&exec_ctx, "this-lb-policy-does-not-exist",
diff --git a/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c b/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
index ffa167a0e7899a9850b56b0b2dbb88ab1d638cbe..f0c6843a688e31cfe1a202b690ad76329e2116a6 100644
--- a/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
+++ b/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
@@ -63,7 +63,8 @@ static grpc_error *my_resolve_address(const char *name, const char *addr,
   }
 }
 
-static grpc_resolver *create_resolver(const char *name) {
+static grpc_resolver *create_resolver(grpc_exec_ctx *exec_ctx,
+                                      const char *name) {
   grpc_resolver_factory *factory = grpc_resolver_factory_lookup("dns");
   grpc_uri *uri = grpc_uri_parse(name, 0);
   GPR_ASSERT(uri);
@@ -71,7 +72,7 @@ static grpc_resolver *create_resolver(const char *name) {
   memset(&args, 0, sizeof(args));
   args.uri = uri;
   grpc_resolver *resolver =
-      grpc_resolver_factory_create_resolver(factory, &args);
+      grpc_resolver_factory_create_resolver(exec_ctx, factory, &args);
   grpc_resolver_factory_unref(factory);
   grpc_uri_destroy(uri);
   return resolver;
@@ -101,29 +102,29 @@ int main(int argc, char **argv) {
   grpc_init();
   gpr_mu_init(&g_mu);
   grpc_blocking_resolve_address = my_resolve_address;
-
-  grpc_resolver *resolver = create_resolver("dns:test");
-
   grpc_channel_args *result = (grpc_channel_args *)1;
 
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_resolver *resolver = create_resolver(&exec_ctx, "dns:test");
   gpr_event ev1;
   gpr_event_init(&ev1);
-  grpc_resolver_next(&exec_ctx, resolver, &result,
-                     grpc_closure_create(on_done, &ev1));
+  grpc_resolver_next(
+      &exec_ctx, resolver, &result,
+      grpc_closure_create(on_done, &ev1, grpc_schedule_on_exec_ctx));
   grpc_exec_ctx_flush(&exec_ctx);
   GPR_ASSERT(wait_loop(5, &ev1));
   GPR_ASSERT(result == NULL);
 
   gpr_event ev2;
   gpr_event_init(&ev2);
-  grpc_resolver_next(&exec_ctx, resolver, &result,
-                     grpc_closure_create(on_done, &ev2));
+  grpc_resolver_next(
+      &exec_ctx, resolver, &result,
+      grpc_closure_create(on_done, &ev2, grpc_schedule_on_exec_ctx));
   grpc_exec_ctx_flush(&exec_ctx);
   GPR_ASSERT(wait_loop(30, &ev2));
   GPR_ASSERT(result != NULL);
 
-  grpc_channel_args_destroy(result);
+  grpc_channel_args_destroy(&exec_ctx, result);
   GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "test");
   grpc_exec_ctx_finish(&exec_ctx);
 
diff --git a/test/core/client_channel/resolvers/dns_resolver_test.c b/test/core/client_channel/resolvers/dns_resolver_test.c
index 41a9125431f3f4fb37452337ec05d5d2f7b6956a..5603a57b5fc5e3bb07e7f57fac1ee99172ef53d7 100644
--- a/test/core/client_channel/resolvers/dns_resolver_test.c
+++ b/test/core/client_channel/resolvers/dns_resolver_test.c
@@ -48,7 +48,7 @@ static void test_succeeds(grpc_resolver_factory *factory, const char *string) {
   GPR_ASSERT(uri);
   memset(&args, 0, sizeof(args));
   args.uri = uri;
-  resolver = grpc_resolver_factory_create_resolver(factory, &args);
+  resolver = grpc_resolver_factory_create_resolver(&exec_ctx, factory, &args);
   GPR_ASSERT(resolver != NULL);
   GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "test_succeeds");
   grpc_uri_destroy(uri);
@@ -65,7 +65,7 @@ static void test_fails(grpc_resolver_factory *factory, const char *string) {
   GPR_ASSERT(uri);
   memset(&args, 0, sizeof(args));
   args.uri = uri;
-  resolver = grpc_resolver_factory_create_resolver(factory, &args);
+  resolver = grpc_resolver_factory_create_resolver(&exec_ctx, factory, &args);
   GPR_ASSERT(resolver == NULL);
   grpc_uri_destroy(uri);
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/test/core/client_channel/resolvers/sockaddr_resolver_test.c b/test/core/client_channel/resolvers/sockaddr_resolver_test.c
index ebf311ab83f8eac76a14d19e40a02788ccf50b01..10df78537c8987ed70fbe3a19107a9872afd8924 100644
--- a/test/core/client_channel/resolvers/sockaddr_resolver_test.c
+++ b/test/core/client_channel/resolvers/sockaddr_resolver_test.c
@@ -49,12 +49,7 @@ typedef struct on_resolution_arg {
 
 void on_resolution_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
   on_resolution_arg *res = arg;
-  const grpc_arg *channel_arg =
-      grpc_channel_args_find(res->resolver_result, GRPC_ARG_SERVER_NAME);
-  GPR_ASSERT(channel_arg != NULL);
-  GPR_ASSERT(channel_arg->type == GRPC_ARG_STRING);
-  GPR_ASSERT(strcmp(res->expected_server_name, channel_arg->value.string) == 0);
-  grpc_channel_args_destroy(res->resolver_result);
+  grpc_channel_args_destroy(exec_ctx, res->resolver_result);
 }
 
 static void test_succeeds(grpc_resolver_factory *factory, const char *string) {
@@ -67,14 +62,14 @@ static void test_succeeds(grpc_resolver_factory *factory, const char *string) {
   GPR_ASSERT(uri);
   memset(&args, 0, sizeof(args));
   args.uri = uri;
-  resolver = grpc_resolver_factory_create_resolver(factory, &args);
+  resolver = grpc_resolver_factory_create_resolver(&exec_ctx, factory, &args);
   GPR_ASSERT(resolver != NULL);
 
   on_resolution_arg on_res_arg;
   memset(&on_res_arg, 0, sizeof(on_res_arg));
   on_res_arg.expected_server_name = uri->path;
-  grpc_closure *on_resolution =
-      grpc_closure_create(on_resolution_cb, &on_res_arg);
+  grpc_closure *on_resolution = grpc_closure_create(
+      on_resolution_cb, &on_res_arg, grpc_schedule_on_exec_ctx);
 
   grpc_resolver_next(&exec_ctx, resolver, &on_res_arg.resolver_result,
                      on_resolution);
@@ -93,7 +88,7 @@ static void test_fails(grpc_resolver_factory *factory, const char *string) {
   GPR_ASSERT(uri);
   memset(&args, 0, sizeof(args));
   args.uri = uri;
-  resolver = grpc_resolver_factory_create_resolver(factory, &args);
+  resolver = grpc_resolver_factory_create_resolver(&exec_ctx, factory, &args);
   GPR_ASSERT(resolver == NULL);
   grpc_uri_destroy(uri);
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/test/core/client_channel/set_initial_connect_string_test.c b/test/core/client_channel/set_initial_connect_string_test.c
index 11e57439d5ed2e26a99d199ed91467519e7872ae..b78ba98e0a9dd2c6f53115e86adfc1fccbb55f88 100644
--- a/test/core/client_channel/set_initial_connect_string_test.c
+++ b/test/core/client_channel/set_initial_connect_string_test.c
@@ -94,7 +94,7 @@ static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
                        grpc_tcp_server_acceptor *acceptor) {
   gpr_free(acceptor);
   test_tcp_server *server = arg;
-  grpc_closure_init(&on_read, handle_read, NULL);
+  grpc_closure_init(&on_read, handle_read, NULL, grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&state.incoming_buffer);
   grpc_slice_buffer_init(&state.temp_incoming_buffer);
   state.tcp = tcp;
@@ -158,7 +158,7 @@ static void cleanup_rpc(void) {
   grpc_event ev;
   grpc_slice_buffer_destroy(&state.incoming_buffer);
   grpc_slice_buffer_destroy(&state.temp_incoming_buffer);
-  grpc_channel_credentials_unref(state.creds);
+  grpc_channel_credentials_release(state.creds);
   grpc_call_destroy(state.call);
   grpc_completion_queue_shutdown(state.cq);
   do {
diff --git a/test/core/compression/algorithm_test.c b/test/core/compression/algorithm_test.c
index bdee748ae6fa02c9cbe2ea68466dc19240a693b9..ff17667b9451efc43f2bc404944bdbc4abd9d94c 100644
--- a/test/core/compression/algorithm_test.c
+++ b/test/core/compression/algorithm_test.c
@@ -53,6 +53,7 @@ static void test_algorithm_mesh(void) {
     grpc_compression_algorithm parsed;
     grpc_mdstr *mdstr;
     grpc_mdelem *mdelem;
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     GPR_ASSERT(
         grpc_compression_algorithm_name((grpc_compression_algorithm)i, &name));
     GPR_ASSERT(grpc_compression_algorithm_parse(name, strlen(name), &parsed));
@@ -63,8 +64,9 @@ static void test_algorithm_mesh(void) {
     mdelem = grpc_compression_encoding_mdelem(parsed);
     GPR_ASSERT(mdelem->value == mdstr);
     GPR_ASSERT(mdelem->key == GRPC_MDSTR_GRPC_ENCODING);
-    GRPC_MDSTR_UNREF(mdstr);
-    GRPC_MDELEM_UNREF(mdelem);
+    GRPC_MDSTR_UNREF(&exec_ctx, mdstr);
+    GRPC_MDELEM_UNREF(&exec_ctx, mdelem);
+    grpc_exec_ctx_finish(&exec_ctx);
   }
 
   /* test failure */
@@ -73,6 +75,7 @@ static void test_algorithm_mesh(void) {
 }
 
 static void test_algorithm_failure(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_mdstr *mdstr;
 
   gpr_log(GPR_DEBUG, "test_algorithm_failure");
@@ -88,7 +91,8 @@ static void test_algorithm_failure(void) {
              NULL);
   GPR_ASSERT(grpc_compression_algorithm_mdstr(GRPC_COMPRESS_ALGORITHMS_COUNT +
                                               1) == NULL);
-  GRPC_MDSTR_UNREF(mdstr);
+  GRPC_MDSTR_UNREF(&exec_ctx, mdstr);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 int main(int argc, char **argv) {
diff --git a/test/core/compression/message_compress_test.c b/test/core/compression/message_compress_test.c
index fc53cd9d36fdb5867c47c265948211697be0afae..2432ca768adb21ad73fe56a8c644961e9a7b2051 100644
--- a/test/core/compression/message_compress_test.c
+++ b/test/core/compression/message_compress_test.c
@@ -40,6 +40,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/support/murmur_hash.h"
 #include "test/core/util/slice_splitter.h"
 #include "test/core/util/test_config.h"
@@ -82,7 +83,12 @@ static void assert_passthrough(grpc_slice value,
 
   grpc_split_slices_to_buffer(uncompressed_split_mode, &value, 1, &input);
 
-  was_compressed = grpc_msg_compress(algorithm, &input, &compressed_raw);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    was_compressed =
+        grpc_msg_compress(&exec_ctx, algorithm, &input, &compressed_raw);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   GPR_ASSERT(input.count > 0);
 
   switch (compress_result_check) {
@@ -99,8 +105,13 @@ static void assert_passthrough(grpc_slice value,
 
   grpc_split_slice_buffer(compressed_split_mode, &compressed_raw, &compressed);
 
-  GPR_ASSERT(grpc_msg_decompress(
-      was_compressed ? algorithm : GRPC_COMPRESS_NONE, &compressed, &output));
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    GPR_ASSERT(grpc_msg_decompress(
+        &exec_ctx, was_compressed ? algorithm : GRPC_COMPRESS_NONE, &compressed,
+        &output));
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   final = grpc_slice_merge(output.slices, output.count);
   GPR_ASSERT(0 == grpc_slice_cmp(value, final));
@@ -160,7 +171,9 @@ static void test_tiny_data_compress(void) {
 
   for (i = 0; i < GRPC_COMPRESS_ALGORITHMS_COUNT; i++) {
     if (i == GRPC_COMPRESS_NONE) continue;
-    GPR_ASSERT(0 == grpc_msg_compress(i, &input, &output));
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    GPR_ASSERT(0 == grpc_msg_compress(&exec_ctx, i, &input, &output));
+    grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(1 == output.count);
   }
 
@@ -180,8 +193,9 @@ static void test_bad_decompression_data_crc(void) {
   grpc_slice_buffer_init(&output);
   grpc_slice_buffer_add(&input, create_test_value(ONE_MB_A));
 
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   /* compress it */
-  grpc_msg_compress(GRPC_COMPRESS_GZIP, &input, &corrupted);
+  grpc_msg_compress(&exec_ctx, GRPC_COMPRESS_GZIP, &input, &corrupted);
   /* corrupt the output by smashing the CRC */
   GPR_ASSERT(corrupted.count > 1);
   GPR_ASSERT(GRPC_SLICE_LENGTH(corrupted.slices[1]) > 8);
@@ -189,7 +203,9 @@ static void test_bad_decompression_data_crc(void) {
   memcpy(GRPC_SLICE_START_PTR(corrupted.slices[1]) + idx, &bad, 4);
 
   /* try (and fail) to decompress the corrupted compresed buffer */
-  GPR_ASSERT(0 == grpc_msg_decompress(GRPC_COMPRESS_GZIP, &corrupted, &output));
+  GPR_ASSERT(0 == grpc_msg_decompress(&exec_ctx, GRPC_COMPRESS_GZIP, &corrupted,
+                                      &output));
+  grpc_exec_ctx_finish(&exec_ctx);
 
   grpc_slice_buffer_destroy(&input);
   grpc_slice_buffer_destroy(&corrupted);
@@ -208,7 +224,10 @@ static void test_bad_decompression_data_trailing_garbage(void) {
                   "\x78\xda\x63\x60\x60\x60\x00\x00\x00\x04\x00\x01\x99", 13));
 
   /* try (and fail) to decompress the invalid compresed buffer */
-  GPR_ASSERT(0 == grpc_msg_decompress(GRPC_COMPRESS_DEFLATE, &input, &output));
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GPR_ASSERT(0 == grpc_msg_decompress(&exec_ctx, GRPC_COMPRESS_DEFLATE, &input,
+                                      &output));
+  grpc_exec_ctx_finish(&exec_ctx);
 
   grpc_slice_buffer_destroy(&input);
   grpc_slice_buffer_destroy(&output);
@@ -224,7 +243,10 @@ static void test_bad_decompression_data_stream(void) {
                         grpc_slice_from_copied_buffer("\x78\xda\xff\xff", 4));
 
   /* try (and fail) to decompress the invalid compresed buffer */
-  GPR_ASSERT(0 == grpc_msg_decompress(GRPC_COMPRESS_DEFLATE, &input, &output));
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GPR_ASSERT(0 == grpc_msg_decompress(&exec_ctx, GRPC_COMPRESS_DEFLATE, &input,
+                                      &output));
+  grpc_exec_ctx_finish(&exec_ctx);
 
   grpc_slice_buffer_destroy(&input);
   grpc_slice_buffer_destroy(&output);
@@ -239,13 +261,16 @@ static void test_bad_compression_algorithm(void) {
   grpc_slice_buffer_init(&output);
   grpc_slice_buffer_add(
       &input, grpc_slice_from_copied_string("Never gonna give you up"));
-  was_compressed =
-      grpc_msg_compress(GRPC_COMPRESS_ALGORITHMS_COUNT, &input, &output);
+
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  was_compressed = grpc_msg_compress(&exec_ctx, GRPC_COMPRESS_ALGORITHMS_COUNT,
+                                     &input, &output);
   GPR_ASSERT(0 == was_compressed);
 
-  was_compressed =
-      grpc_msg_compress(GRPC_COMPRESS_ALGORITHMS_COUNT + 123, &input, &output);
+  was_compressed = grpc_msg_compress(
+      &exec_ctx, GRPC_COMPRESS_ALGORITHMS_COUNT + 123, &input, &output);
   GPR_ASSERT(0 == was_compressed);
+  grpc_exec_ctx_finish(&exec_ctx);
 
   grpc_slice_buffer_destroy(&input);
   grpc_slice_buffer_destroy(&output);
@@ -261,13 +286,15 @@ static void test_bad_decompression_algorithm(void) {
   grpc_slice_buffer_add(&input,
                         grpc_slice_from_copied_string(
                             "I'm not really compressed but it doesn't matter"));
-  was_decompressed =
-      grpc_msg_decompress(GRPC_COMPRESS_ALGORITHMS_COUNT, &input, &output);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  was_decompressed = grpc_msg_decompress(
+      &exec_ctx, GRPC_COMPRESS_ALGORITHMS_COUNT, &input, &output);
   GPR_ASSERT(0 == was_decompressed);
 
-  was_decompressed = grpc_msg_decompress(GRPC_COMPRESS_ALGORITHMS_COUNT + 123,
-                                         &input, &output);
+  was_decompressed = grpc_msg_decompress(
+      &exec_ctx, GRPC_COMPRESS_ALGORITHMS_COUNT + 123, &input, &output);
   GPR_ASSERT(0 == was_decompressed);
+  grpc_exec_ctx_finish(&exec_ctx);
 
   grpc_slice_buffer_destroy(&input);
   grpc_slice_buffer_destroy(&output);
diff --git a/test/core/end2end/BUILD b/test/core/end2end/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..a40fb8e083f9664a63f352c1e325ed03b7dd7d14
--- /dev/null
+++ b/test/core/end2end/BUILD
@@ -0,0 +1,80 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+load(":generate_tests.bzl", "grpc_end2end_tests")
+
+cc_library(
+  name = 'cq_verifier',
+  srcs = ['cq_verifier.c'],
+  hdrs = ['cq_verifier.h'],
+  deps = ['//:gpr', '//:grpc', '//test/core/util:grpc_test_util'],
+  copts = ['-std=c99'],
+  visibility = ["//test:__subpackages__"],
+)
+
+cc_library(
+  name = 'ssl_test_data',
+  visibility = ["//test:__subpackages__"],
+  hdrs = ['data/ssl_test_data.h'],
+  copts = ['-std=c99'],
+  srcs = [
+    "data/client_certs.c",
+    "data/server1_cert.c",
+    "data/server1_key.c",
+    "data/test_root_cert.c",
+  ]
+)
+
+cc_library(
+  name = 'fake_resolver',
+  hdrs = ['fake_resolver.h'],
+  srcs = ['fake_resolver.c'],
+  copts = ['-std=c99'],
+  deps = ['//:gpr', '//:grpc', '//test/core/util:grpc_test_util']
+)
+
+cc_library(
+  name = 'http_proxy',
+  hdrs = ['fixtures/http_proxy.h'],
+  srcs = ['fixtures/http_proxy.c'],
+  copts = ['-std=c99'],
+  deps = ['//:gpr', '//:grpc', '//test/core/util:grpc_test_util']
+)
+
+cc_library(
+  name = 'proxy',
+  hdrs = ['fixtures/proxy.h'],
+  srcs = ['fixtures/proxy.c'],
+  copts = ['-std=c99'],
+  deps = ['//:gpr', '//:grpc', '//test/core/util:grpc_test_util']
+)
+
+grpc_end2end_tests()
diff --git a/test/core/end2end/bad_server_response_test.c b/test/core/end2end/bad_server_response_test.c
index 30468558e85825648c550f1548a52ec12af8220c..a05201688309f9cc4ede388ead33a2a0c30b50d4 100644
--- a/test/core/end2end/bad_server_response_test.c
+++ b/test/core/end2end/bad_server_response_test.c
@@ -47,6 +47,7 @@
 #include <grpc/support/thd.h>
 
 #include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
@@ -147,8 +148,8 @@ static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
                        grpc_tcp_server_acceptor *acceptor) {
   gpr_free(acceptor);
   test_tcp_server *server = arg;
-  grpc_closure_init(&on_read, handle_read, NULL);
-  grpc_closure_init(&on_write, done_write, NULL);
+  grpc_closure_init(&on_read, handle_read, NULL, grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&on_write, done_write, NULL, grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&state.temp_incoming_buffer);
   grpc_slice_buffer_init(&state.outgoing_buffer);
   state.tcp = tcp;
@@ -227,10 +228,10 @@ static void start_rpc(int target_port, grpc_status_code expected_status,
   cq_verifier_destroy(cqv);
 }
 
-static void cleanup_rpc(void) {
+static void cleanup_rpc(grpc_exec_ctx *exec_ctx) {
   grpc_event ev;
-  grpc_slice_buffer_destroy(&state.temp_incoming_buffer);
-  grpc_slice_buffer_destroy(&state.outgoing_buffer);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &state.temp_incoming_buffer);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &state.outgoing_buffer);
   grpc_call_destroy(state.call);
   grpc_completion_queue_shutdown(state.cq);
   do {
@@ -299,8 +300,8 @@ static void run_test(const char *response_payload,
   /* clean up */
   grpc_endpoint_shutdown(&exec_ctx, state.tcp);
   grpc_endpoint_destroy(&exec_ctx, state.tcp);
+  cleanup_rpc(&exec_ctx);
   grpc_exec_ctx_finish(&exec_ctx);
-  cleanup_rpc();
   test_tcp_server_destroy(&test_server);
 
   grpc_shutdown();
diff --git a/test/core/end2end/connection_refused_test.c b/test/core/end2end/connection_refused_test.c
index 728d6dca5900bf4fb098e3f401731479416b83db..44308043608053f108ed22eea598d72a6068bac1 100644
--- a/test/core/end2end/connection_refused_test.c
+++ b/test/core/end2end/connection_refused_test.c
@@ -145,7 +145,11 @@ static void run_test(bool wait_for_ready, bool use_service_config) {
   gpr_free(details);
   grpc_metadata_array_destroy(&trailing_metadata_recv);
 
-  if (args != NULL) grpc_channel_args_destroy(args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    if (args != NULL) grpc_channel_args_destroy(&exec_ctx, args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   grpc_shutdown();
 }
diff --git a/test/core/end2end/end2end_nosec_tests.c b/test/core/end2end/end2end_nosec_tests.c
index 663489082f9fba5c676be896e2c2368e6028f3cc..b162bf2f40fb819bf982378ef3c1e002bff732bc 100644
--- a/test/core/end2end/end2end_nosec_tests.c
+++ b/test/core/end2end/end2end_nosec_tests.c
@@ -135,6 +135,10 @@ extern void streaming_error_response(grpc_end2end_test_config config);
 extern void streaming_error_response_pre_init(void);
 extern void trailing_metadata(grpc_end2end_test_config config);
 extern void trailing_metadata_pre_init(void);
+extern void write_buffering(grpc_end2end_test_config config);
+extern void write_buffering_pre_init(void);
+extern void write_buffering_at_end(grpc_end2end_test_config config);
+extern void write_buffering_at_end_pre_init(void);
 
 void grpc_end2end_tests_pre_init(void) {
   GPR_ASSERT(!g_pre_init_called);
@@ -185,6 +189,8 @@ void grpc_end2end_tests_pre_init(void) {
   simple_request_pre_init();
   streaming_error_response_pre_init();
   trailing_metadata_pre_init();
+  write_buffering_pre_init();
+  write_buffering_at_end_pre_init();
 }
 
 void grpc_end2end_tests(int argc, char **argv,
@@ -240,6 +246,8 @@ void grpc_end2end_tests(int argc, char **argv,
     simple_request(config);
     streaming_error_response(config);
     trailing_metadata(config);
+    write_buffering(config);
+    write_buffering_at_end(config);
     return;
   }
 
@@ -428,6 +436,14 @@ void grpc_end2end_tests(int argc, char **argv,
       trailing_metadata(config);
       continue;
     }
+    if (0 == strcmp("write_buffering", argv[i])) {
+      write_buffering(config);
+      continue;
+    }
+    if (0 == strcmp("write_buffering_at_end", argv[i])) {
+      write_buffering_at_end(config);
+      continue;
+    }
     gpr_log(GPR_DEBUG, "not a test: '%s'", argv[i]);
     abort();
   }
diff --git a/test/core/end2end/end2end_test.sh b/test/core/end2end/end2end_test.sh
new file mode 100755
index 0000000000000000000000000000000000000000..f2309acc881d6539a854a9c15a4fd3b28fb6a561
--- /dev/null
+++ b/test/core/end2end/end2end_test.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+# Test runner for end2end tests from bazel
+
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+$1 $2
diff --git a/test/core/end2end/end2end_tests.c b/test/core/end2end/end2end_tests.c
index 25c7c62fde51dfa45bdfe5b0a10178ae203583b2..9bca0c81f67a45c370689a2193b16b50765da7d2 100644
--- a/test/core/end2end/end2end_tests.c
+++ b/test/core/end2end/end2end_tests.c
@@ -137,6 +137,10 @@ extern void streaming_error_response(grpc_end2end_test_config config);
 extern void streaming_error_response_pre_init(void);
 extern void trailing_metadata(grpc_end2end_test_config config);
 extern void trailing_metadata_pre_init(void);
+extern void write_buffering(grpc_end2end_test_config config);
+extern void write_buffering_pre_init(void);
+extern void write_buffering_at_end(grpc_end2end_test_config config);
+extern void write_buffering_at_end_pre_init(void);
 
 void grpc_end2end_tests_pre_init(void) {
   GPR_ASSERT(!g_pre_init_called);
@@ -188,6 +192,8 @@ void grpc_end2end_tests_pre_init(void) {
   simple_request_pre_init();
   streaming_error_response_pre_init();
   trailing_metadata_pre_init();
+  write_buffering_pre_init();
+  write_buffering_at_end_pre_init();
 }
 
 void grpc_end2end_tests(int argc, char **argv,
@@ -244,6 +250,8 @@ void grpc_end2end_tests(int argc, char **argv,
     simple_request(config);
     streaming_error_response(config);
     trailing_metadata(config);
+    write_buffering(config);
+    write_buffering_at_end(config);
     return;
   }
 
@@ -436,6 +444,14 @@ void grpc_end2end_tests(int argc, char **argv,
       trailing_metadata(config);
       continue;
     }
+    if (0 == strcmp("write_buffering", argv[i])) {
+      write_buffering(config);
+      continue;
+    }
+    if (0 == strcmp("write_buffering_at_end", argv[i])) {
+      write_buffering_at_end(config);
+      continue;
+    }
     gpr_log(GPR_DEBUG, "not a test: '%s'", argv[i]);
     abort();
   }
diff --git a/test/core/end2end/fake_resolver.c b/test/core/end2end/fake_resolver.c
index 865b55de4d659f1da143c3a9237f32b94273619e..966642f403c7f9e660929ec51aafbe1254ddd199 100644
--- a/test/core/end2end/fake_resolver.c
+++ b/test/core/end2end/fake_resolver.c
@@ -48,6 +48,7 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
@@ -76,8 +77,8 @@ typedef struct {
 static void fake_resolver_destroy(grpc_exec_ctx* exec_ctx, grpc_resolver* gr) {
   fake_resolver* r = (fake_resolver*)gr;
   gpr_mu_destroy(&r->mu);
-  grpc_channel_args_destroy(r->channel_args);
-  grpc_lb_addresses_destroy(r->addresses);
+  grpc_channel_args_destroy(exec_ctx, r->channel_args);
+  grpc_lb_addresses_destroy(exec_ctx, r->addresses);
   gpr_free(r);
 }
 
@@ -87,7 +88,7 @@ static void fake_resolver_shutdown(grpc_exec_ctx* exec_ctx,
   gpr_mu_lock(&r->mu);
   if (r->next_completion != NULL) {
     *r->target_result = NULL;
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
   }
   gpr_mu_unlock(&r->mu);
@@ -100,7 +101,7 @@ static void fake_resolver_maybe_finish_next_locked(grpc_exec_ctx* exec_ctx,
     grpc_arg arg = grpc_lb_addresses_create_channel_arg(r->addresses);
     *r->target_result =
         grpc_channel_args_copy_and_add(r->channel_args, &arg, 1);
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
   }
 }
@@ -140,7 +141,8 @@ static void fake_resolver_factory_unref(grpc_resolver_factory* factory) {}
 
 static void do_nothing(void* ignored) {}
 
-static grpc_resolver* fake_resolver_create(grpc_resolver_factory* factory,
+static grpc_resolver* fake_resolver_create(grpc_exec_ctx* exec_ctx,
+                                           grpc_resolver_factory* factory,
                                            grpc_resolver_args* args) {
   if (0 != strcmp(args->uri->authority, "")) {
     gpr_log(GPR_ERROR, "authority based uri's not supported by the %s scheme",
@@ -172,21 +174,16 @@ static grpc_resolver* fake_resolver_create(grpc_resolver_factory* factory,
     addresses->addresses[i].is_balancer = lb_enabled;
     if (errors_found) break;
   }
-  grpc_slice_buffer_destroy(&path_parts);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &path_parts);
   grpc_slice_unref(path_slice);
   if (errors_found) {
-    grpc_lb_addresses_destroy(addresses);
+    grpc_lb_addresses_destroy(exec_ctx, addresses);
     return NULL;
   }
   // Instantiate resolver.
   fake_resolver* r = gpr_malloc(sizeof(fake_resolver));
   memset(r, 0, sizeof(*r));
-  grpc_arg server_name_arg;
-  server_name_arg.type = GRPC_ARG_STRING;
-  server_name_arg.key = GRPC_ARG_SERVER_NAME;
-  server_name_arg.value.string = args->uri->path;
-  r->channel_args =
-      grpc_channel_args_copy_and_add(args->args, &server_name_arg, 1);
+  r->channel_args = grpc_channel_args_copy(args->args);
   r->addresses = addresses;
   gpr_mu_init(&r->mu);
   grpc_resolver_init(&r->base, &fake_resolver_vtable);
diff --git a/test/core/end2end/fixtures/h2_census.c b/test/core/end2end/fixtures/h2_census.c
index c52d7660f59850776dc54b390aede107b1c76d9d..8e60123ed6e5ebb5c67cb3088587e279e410c00d 100644
--- a/test/core/end2end/fixtures/h2_census.c
+++ b/test/core/end2end/fixtures/h2_census.c
@@ -85,7 +85,11 @@ void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
   client_args = grpc_channel_args_copy_and_add(client_args, &arg, 1);
   f->client = grpc_insecure_channel_create(ffd->localaddr, client_args, NULL);
   GPR_ASSERT(f->client);
-  grpc_channel_args_destroy(client_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, client_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 }
 
 void chttp2_init_server_fullstack(grpc_end2end_test_fixture *f,
@@ -97,7 +101,11 @@ void chttp2_init_server_fullstack(grpc_end2end_test_fixture *f,
   }
   server_args = grpc_channel_args_copy_and_add(server_args, &arg, 1);
   f->server = grpc_server_create(server_args, NULL);
-  grpc_channel_args_destroy(server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   grpc_server_register_completion_queue(f->server, f->cq, NULL);
   GPR_ASSERT(grpc_server_add_insecure_http2_port(f->server, ffd->localaddr));
   grpc_server_start(f->server);
diff --git a/test/core/end2end/fixtures/h2_compress.c b/test/core/end2end/fixtures/h2_compress.c
index fedd2ebc467d2bcaf04c0b33efde67a9ca7014a6..c01e45664bb3300945ec0abe75a2a21f6176cd48 100644
--- a/test/core/end2end/fixtures/h2_compress.c
+++ b/test/core/end2end/fixtures/h2_compress.c
@@ -78,7 +78,9 @@ void chttp2_init_client_fullstack_compression(grpc_end2end_test_fixture *f,
                                               grpc_channel_args *client_args) {
   fullstack_compression_fixture_data *ffd = f->fixture_data;
   if (ffd->client_args_compression != NULL) {
-    grpc_channel_args_destroy(ffd->client_args_compression);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, ffd->client_args_compression);
+    grpc_exec_ctx_finish(&exec_ctx);
   }
   ffd->client_args_compression = grpc_channel_args_set_compression_algorithm(
       client_args, GRPC_COMPRESS_GZIP);
@@ -90,7 +92,9 @@ void chttp2_init_server_fullstack_compression(grpc_end2end_test_fixture *f,
                                               grpc_channel_args *server_args) {
   fullstack_compression_fixture_data *ffd = f->fixture_data;
   if (ffd->server_args_compression != NULL) {
-    grpc_channel_args_destroy(ffd->server_args_compression);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, ffd->server_args_compression);
+    grpc_exec_ctx_finish(&exec_ctx);
   }
   ffd->server_args_compression = grpc_channel_args_set_compression_algorithm(
       server_args, GRPC_COMPRESS_GZIP);
@@ -104,11 +108,13 @@ void chttp2_init_server_fullstack_compression(grpc_end2end_test_fixture *f,
 }
 
 void chttp2_tear_down_fullstack_compression(grpc_end2end_test_fixture *f) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   fullstack_compression_fixture_data *ffd = f->fixture_data;
-  grpc_channel_args_destroy(ffd->client_args_compression);
-  grpc_channel_args_destroy(ffd->server_args_compression);
+  grpc_channel_args_destroy(&exec_ctx, ffd->client_args_compression);
+  grpc_channel_args_destroy(&exec_ctx, ffd->server_args_compression);
   gpr_free(ffd->localaddr);
   gpr_free(ffd);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /* All test configurations */
diff --git a/test/core/end2end/fixtures/h2_load_reporting.c b/test/core/end2end/fixtures/h2_load_reporting.c
index 7a76489b440a8903740582c53fc971dcf87cce91..38321f34db73e77145992ab5d5e805be031d0dec 100644
--- a/test/core/end2end/fixtures/h2_load_reporting.c
+++ b/test/core/end2end/fixtures/h2_load_reporting.c
@@ -88,7 +88,11 @@ void chttp2_init_server_load_reporting(grpc_end2end_test_fixture *f,
   }
   server_args = grpc_channel_args_copy_and_add(server_args, &arg, 1);
   f->server = grpc_server_create(server_args, NULL);
-  grpc_channel_args_destroy(server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   grpc_server_register_completion_queue(f->server, f->cq, NULL);
   GPR_ASSERT(grpc_server_add_insecure_http2_port(f->server, ffd->localaddr));
   grpc_server_start(f->server);
diff --git a/test/core/end2end/fixtures/h2_oauth2.c b/test/core/end2end/fixtures/h2_oauth2.c
index 6122f4f2f93c4e51806a48fc61f60b4ed869812a..83f759ce2dd6499053602d24db06d02af5297d75 100644
--- a/test/core/end2end/fixtures/h2_oauth2.c
+++ b/test/core/end2end/fixtures/h2_oauth2.c
@@ -163,7 +163,11 @@ static void chttp2_init_client_simple_ssl_with_oauth2_secure_fullstack(
   grpc_channel_args *new_client_args =
       grpc_channel_args_copy_and_add(client_args, &ssl_name_override, 1);
   chttp2_init_client_secure_fullstack(f, new_client_args, ssl_oauth2_creds);
-  grpc_channel_args_destroy(new_client_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, new_client_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   grpc_channel_credentials_release(ssl_creds);
   grpc_call_credentials_release(oauth2_creds);
 }
diff --git a/test/core/end2end/fixtures/h2_ssl.c b/test/core/end2end/fixtures/h2_ssl.c
index bbd522cf309719b4f8a38c886c0aceb4b61785bb..cf44cd093c93633add39c6b77939706ff57be041 100644
--- a/test/core/end2end/fixtures/h2_ssl.c
+++ b/test/core/end2end/fixtures/h2_ssl.c
@@ -118,7 +118,11 @@ static void chttp2_init_client_simple_ssl_secure_fullstack(
   grpc_channel_args *new_client_args =
       grpc_channel_args_copy_and_add(client_args, &ssl_name_override, 1);
   chttp2_init_client_secure_fullstack(f, new_client_args, ssl_creds);
-  grpc_channel_args_destroy(new_client_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, new_client_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 }
 
 static int fail_server_auth_check(grpc_channel_args *server_args) {
diff --git a/test/core/end2end/fixtures/h2_ssl_cert.c b/test/core/end2end/fixtures/h2_ssl_cert.c
index e39cb491de86af0831c53cde3ae644592313c7fe..ae49cc859aff1903b7029b5f552ae94747ac6ebc 100644
--- a/test/core/end2end/fixtures/h2_ssl_cert.c
+++ b/test/core/end2end/fixtures/h2_ssl_cert.c
@@ -186,7 +186,11 @@ typedef enum { NONE, SELF_SIGNED, SIGNED, BAD_CERT_PAIR } certtype;
     grpc_channel_args *new_client_args =                                     \
         grpc_channel_args_copy_and_add(client_args, &ssl_name_override, 1);  \
     chttp2_init_client_secure_fullstack(f, new_client_args, ssl_creds);      \
-    grpc_channel_args_destroy(new_client_args);                              \
+    {                                                                        \
+      grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;                           \
+      grpc_channel_args_destroy(&exec_ctx, new_client_args);                 \
+      grpc_exec_ctx_finish(&exec_ctx);                                       \
+    }                                                                        \
   }
 
 CLIENT_INIT(NONE)
diff --git a/test/core/end2end/fixtures/h2_ssl_proxy.c b/test/core/end2end/fixtures/h2_ssl_proxy.c
index 27cf3ebf326e326c9fd904c22bb23952d20c1649..740b075bf6d32abe3296f3ed9a7318247d623ffe 100644
--- a/test/core/end2end/fixtures/h2_ssl_proxy.c
+++ b/test/core/end2end/fixtures/h2_ssl_proxy.c
@@ -79,7 +79,11 @@ static grpc_channel *create_proxy_client(const char *target,
   channel =
       grpc_secure_channel_create(ssl_creds, target, new_client_args, NULL);
   grpc_channel_credentials_release(ssl_creds);
-  grpc_channel_args_destroy(new_client_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, new_client_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   return channel;
 }
 
@@ -151,7 +155,11 @@ static void chttp2_init_client_simple_ssl_secure_fullstack(
   grpc_channel_args *new_client_args =
       grpc_channel_args_copy_and_add(client_args, &ssl_name_override, 1);
   chttp2_init_client_secure_fullstack(f, new_client_args, ssl_creds);
-  grpc_channel_args_destroy(new_client_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, new_client_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 }
 
 static int fail_server_auth_check(grpc_channel_args *server_args) {
diff --git a/test/core/end2end/fixtures/http_proxy.c b/test/core/end2end/fixtures/http_proxy.c
index 80865fc7a6c3bc8519e5ff2be2368e42f1ae47bf..b62082c6fb1d1552aca41593a4277376e41dc63b 100644
--- a/test/core/end2end/fixtures/http_proxy.c
+++ b/test/core/end2end/fixtures/http_proxy.c
@@ -59,6 +59,7 @@
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/tcp_client.h"
 #include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/port.h"
 
 struct grpc_end2end_http_proxy {
@@ -110,12 +111,14 @@ static void proxy_connection_unref(grpc_exec_ctx* exec_ctx,
     if (conn->server_endpoint != NULL)
       grpc_endpoint_destroy(exec_ctx, conn->server_endpoint);
     grpc_pollset_set_destroy(conn->pollset_set);
-    grpc_slice_buffer_destroy(&conn->client_read_buffer);
-    grpc_slice_buffer_destroy(&conn->client_deferred_write_buffer);
-    grpc_slice_buffer_destroy(&conn->client_write_buffer);
-    grpc_slice_buffer_destroy(&conn->server_read_buffer);
-    grpc_slice_buffer_destroy(&conn->server_deferred_write_buffer);
-    grpc_slice_buffer_destroy(&conn->server_write_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &conn->client_read_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx,
+                                       &conn->client_deferred_write_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &conn->client_write_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &conn->server_read_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx,
+                                       &conn->server_deferred_write_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &conn->server_write_buffer);
     grpc_http_parser_destroy(&conn->http_parser);
     grpc_http_request_destroy(&conn->http_request);
     gpr_free(conn);
@@ -376,15 +379,20 @@ static void on_accept(grpc_exec_ctx* exec_ctx, void* arg,
   gpr_ref_init(&conn->refcount, 1);
   conn->pollset_set = grpc_pollset_set_create();
   grpc_pollset_set_add_pollset(exec_ctx, conn->pollset_set, proxy->pollset);
-  grpc_closure_init(&conn->on_read_request_done, on_read_request_done, conn);
-  grpc_closure_init(&conn->on_server_connect_done, on_server_connect_done,
-                    conn);
-  grpc_closure_init(&conn->on_write_response_done, on_write_response_done,
-                    conn);
-  grpc_closure_init(&conn->on_client_read_done, on_client_read_done, conn);
-  grpc_closure_init(&conn->on_client_write_done, on_client_write_done, conn);
-  grpc_closure_init(&conn->on_server_read_done, on_server_read_done, conn);
-  grpc_closure_init(&conn->on_server_write_done, on_server_write_done, conn);
+  grpc_closure_init(&conn->on_read_request_done, on_read_request_done, conn,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&conn->on_server_connect_done, on_server_connect_done, conn,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&conn->on_write_response_done, on_write_response_done, conn,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&conn->on_client_read_done, on_client_read_done, conn,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&conn->on_client_write_done, on_client_write_done, conn,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&conn->on_server_read_done, on_server_read_done, conn,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&conn->on_server_write_done, on_server_write_done, conn,
+                    grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&conn->client_read_buffer);
   grpc_slice_buffer_init(&conn->client_deferred_write_buffer);
   grpc_slice_buffer_init(&conn->client_write_buffer);
@@ -469,9 +477,10 @@ void grpc_end2end_http_proxy_destroy(grpc_end2end_http_proxy* proxy) {
   grpc_tcp_server_shutdown_listeners(&exec_ctx, proxy->server);
   grpc_tcp_server_unref(&exec_ctx, proxy->server);
   gpr_free(proxy->proxy_name);
-  grpc_channel_args_destroy(proxy->channel_args);
+  grpc_channel_args_destroy(&exec_ctx, proxy->channel_args);
   grpc_closure destroyed;
-  grpc_closure_init(&destroyed, destroy_pollset, proxy->pollset);
+  grpc_closure_init(&destroyed, destroy_pollset, proxy->pollset,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, proxy->pollset, &destroyed);
   gpr_free(proxy);
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/test/core/end2end/fuzzers/BUILD b/test/core/end2end/fuzzers/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..4d98aa0725cc82d131bdd7832ac8dcb9017548b1
--- /dev/null
+++ b/test/core/end2end/fuzzers/BUILD
@@ -0,0 +1,56 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+grpc_fuzzer(
+  name = "api_fuzzer",
+  srcs = ["api_fuzzer.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util", "//test/core/end2end:ssl_test_data"],
+  corpus = "api_fuzzer_corpus",
+  copts = ["-std=c99"],
+)
+
+grpc_fuzzer(
+  name = "client_fuzzer",
+  srcs = ["client_fuzzer.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "client_fuzzer_corpus",
+  copts = ["-std=c99"],
+)
+
+grpc_fuzzer(
+  name = "server_fuzzer",
+  srcs = ["server_fuzzer.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "server_fuzzer_corpus",
+  copts = ["-std=c99"],
+)
diff --git a/test/core/end2end/fuzzers/api_fuzzer.c b/test/core/end2end/fuzzers/api_fuzzer.c
index 19ac6ced14b39a7c53dbbe2e2221e41a71e41d88..200a51858a02072fec588b626ed8e30db55ecaea 100644
--- a/test/core/end2end/fuzzers/api_fuzzer.c
+++ b/test/core/end2end/fuzzers/api_fuzzer.c
@@ -349,11 +349,11 @@ static void finish_resolve(grpc_exec_ctx *exec_ctx, void *arg,
     addrs->addrs = gpr_malloc(sizeof(*addrs->addrs));
     addrs->addrs[0].len = 0;
     *r->addrs = addrs;
-    grpc_exec_ctx_sched(exec_ctx, r->on_done, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, r->on_done, GRPC_ERROR_NONE);
   } else {
-    grpc_exec_ctx_sched(
+    grpc_closure_sched(
         exec_ctx, r->on_done,
-        GRPC_ERROR_CREATE_REFERENCING("Resolution failed", &error, 1), NULL);
+        GRPC_ERROR_CREATE_REFERENCING("Resolution failed", &error, 1));
   }
 
   gpr_free(r->addr);
@@ -361,16 +361,19 @@ static void finish_resolve(grpc_exec_ctx *exec_ctx, void *arg,
 }
 
 void my_resolve_address(grpc_exec_ctx *exec_ctx, const char *addr,
-                        const char *default_port, grpc_closure *on_done,
+                        const char *default_port,
+                        grpc_pollset_set *interested_parties,
+                        grpc_closure *on_done,
                         grpc_resolved_addresses **addresses) {
   addr_req *r = gpr_malloc(sizeof(*r));
   r->addr = gpr_strdup(addr);
   r->on_done = on_done;
   r->addrs = addresses;
-  grpc_timer_init(exec_ctx, &r->timer,
-                  gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
-                               gpr_time_from_seconds(1, GPR_TIMESPAN)),
-                  finish_resolve, r, gpr_now(GPR_CLOCK_MONOTONIC));
+  grpc_timer_init(
+      exec_ctx, &r->timer, gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
+                                        gpr_time_from_seconds(1, GPR_TIMESPAN)),
+      grpc_closure_create(finish_resolve, r, grpc_schedule_on_exec_ctx),
+      gpr_now(GPR_CLOCK_MONOTONIC));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -396,7 +399,7 @@ static void do_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
   future_connect *fc = arg;
   if (error != GRPC_ERROR_NONE) {
     *fc->ep = NULL;
-    grpc_exec_ctx_sched(exec_ctx, fc->closure, GRPC_ERROR_REF(error), NULL);
+    grpc_closure_sched(exec_ctx, fc->closure, GRPC_ERROR_REF(error));
   } else if (g_server != NULL) {
     grpc_endpoint *client;
     grpc_endpoint *server;
@@ -408,7 +411,7 @@ static void do_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
     grpc_server_setup_transport(exec_ctx, g_server, transport, NULL, NULL);
     grpc_chttp2_transport_start_reading(exec_ctx, transport, NULL);
 
-    grpc_exec_ctx_sched(exec_ctx, fc->closure, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, fc->closure, GRPC_ERROR_NONE);
   } else {
     sched_connect(exec_ctx, fc->closure, fc->ep, fc->deadline);
   }
@@ -419,8 +422,8 @@ static void sched_connect(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
                           grpc_endpoint **ep, gpr_timespec deadline) {
   if (gpr_time_cmp(deadline, gpr_now(deadline.clock_type)) < 0) {
     *ep = NULL;
-    grpc_exec_ctx_sched(exec_ctx, closure,
-                        GRPC_ERROR_CREATE("Connect deadline exceeded"), NULL);
+    grpc_closure_sched(exec_ctx, closure,
+                       GRPC_ERROR_CREATE("Connect deadline exceeded"));
     return;
   }
 
@@ -428,10 +431,11 @@ static void sched_connect(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
   fc->closure = closure;
   fc->ep = ep;
   fc->deadline = deadline;
-  grpc_timer_init(exec_ctx, &fc->timer,
-                  gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
-                               gpr_time_from_millis(1, GPR_TIMESPAN)),
-                  do_connect, fc, gpr_now(GPR_CLOCK_MONOTONIC));
+  grpc_timer_init(
+      exec_ctx, &fc->timer, gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
+                                         gpr_time_from_millis(1, GPR_TIMESPAN)),
+      grpc_closure_create(do_connect, fc, grpc_schedule_on_exec_ctx),
+      gpr_now(GPR_CLOCK_MONOTONIC));
 }
 
 static void my_tcp_client_connect(grpc_exec_ctx *exec_ctx,
@@ -744,7 +748,11 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
           grpc_channel_args *args = read_args(&inp);
           g_channel = grpc_insecure_channel_create(target_uri, args, NULL);
           GPR_ASSERT(g_channel != NULL);
-          grpc_channel_args_destroy(args);
+          {
+            grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+            grpc_channel_args_destroy(&exec_ctx, args);
+            grpc_exec_ctx_finish(&exec_ctx);
+          }
           gpr_free(target_uri);
           gpr_free(target);
         } else {
@@ -768,7 +776,11 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
           grpc_channel_args *args = read_args(&inp);
           g_server = grpc_server_create(args, NULL);
           GPR_ASSERT(g_server != NULL);
-          grpc_channel_args_destroy(args);
+          {
+            grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+            grpc_channel_args_destroy(&exec_ctx, args);
+            grpc_exec_ctx_finish(&exec_ctx);
+          }
           grpc_server_register_completion_queue(g_server, cq, NULL);
           grpc_server_start(g_server);
           server_shutdown = false;
@@ -1104,7 +1116,11 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
           grpc_channel_credentials *creds = read_channel_creds(&inp);
           g_channel = grpc_secure_channel_create(creds, target_uri, args, NULL);
           GPR_ASSERT(g_channel != NULL);
-          grpc_channel_args_destroy(args);
+          {
+            grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+            grpc_channel_args_destroy(&exec_ctx, args);
+            grpc_exec_ctx_finish(&exec_ctx);
+          }
           gpr_free(target_uri);
           gpr_free(target);
           grpc_channel_credentials_release(creds);
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diff --git a/test/core/end2end/fuzzers/client_fuzzer.c b/test/core/end2end/fuzzers/client_fuzzer.c
index c5260cd2878e652012ca6e30e3e6c35bfb702a39..26b520885bb1fd6f4a74df77f64c08d5508df0f6 100644
--- a/test/core/end2end/fuzzers/client_fuzzer.c
+++ b/test/core/end2end/fuzzers/client_fuzzer.c
@@ -62,7 +62,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
       grpc_resource_quota_create("client_fuzzer");
   grpc_endpoint *mock_endpoint =
       grpc_mock_endpoint_create(discard_write, resource_quota);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
 
   grpc_completion_queue *cq = grpc_completion_queue_create(NULL);
   grpc_transport *transport =
diff --git a/test/core/end2end/fuzzers/server_fuzzer.c b/test/core/end2end/fuzzers/server_fuzzer.c
index 164022ec79ed7533a23933699aabe43cf8a47977..115fb0692526c6a2f182b40a8caee59299b0922a 100644
--- a/test/core/end2end/fuzzers/server_fuzzer.c
+++ b/test/core/end2end/fuzzers/server_fuzzer.c
@@ -60,7 +60,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
       grpc_resource_quota_create("server_fuzzer");
   grpc_endpoint *mock_endpoint =
       grpc_mock_endpoint_create(discard_write, resource_quota);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   grpc_mock_endpoint_put_read(
       &exec_ctx, mock_endpoint,
       grpc_slice_from_copied_buffer((const char *)data, size));
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index 201a92a1fdcc362a1a0255adcb9ce176a650afd4..bcb7136eaa2d1b4bf63a09c557f85a7eea91cc8e 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -143,6 +143,8 @@ END2END_TESTS = {
     'streaming_error_response': default_test_options,
     'trailing_metadata': default_test_options,
     'authority_not_supported': default_test_options,
+    'write_buffering': default_test_options,
+    'write_buffering_at_end': default_test_options,
 }
 
 
diff --git a/test/core/end2end/generate_tests.bzl b/test/core/end2end/generate_tests.bzl
new file mode 100755
index 0000000000000000000000000000000000000000..95c06de73f95303c57eb50852a8018260643f80f
--- /dev/null
+++ b/test/core/end2end/generate_tests.bzl
@@ -0,0 +1,194 @@
+#!/usr/bin/env python2.7
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+"""Generates the appropriate build.json data for all the end2end tests."""
+
+
+def fixture_options(fullstack=True, includes_proxy=False, dns_resolver=True,
+                    secure=True, tracing=False,
+                    platforms=['windows', 'linux', 'mac', 'posix']):
+  return struct(
+    fullstack=fullstack,
+    includes_proxy=includes_proxy,
+    dns_resolver=dns_resolver,
+    secure=secure,
+    tracing=tracing,
+    #platforms=platforms
+  )
+
+
+# maps fixture name to whether it requires the security library
+END2END_FIXTURES = {
+    'h2_compress': fixture_options(),
+    'h2_census': fixture_options(),
+    'h2_load_reporting': fixture_options(),
+    'h2_fakesec': fixture_options(),
+    'h2_fd': fixture_options(dns_resolver=False, fullstack=False,
+                             platforms=['linux', 'mac', 'posix']),
+    'h2_full': fixture_options(),
+    'h2_full+pipe': fixture_options(platforms=['linux']),
+    'h2_full+trace': fixture_options(tracing=True),
+    'h2_http_proxy': fixture_options(),
+    'h2_oauth2': fixture_options(),
+    'h2_proxy': fixture_options(includes_proxy=True),
+    'h2_sockpair_1byte': fixture_options(fullstack=False, dns_resolver=False),
+    'h2_sockpair': fixture_options(fullstack=False, dns_resolver=False),
+    'h2_sockpair+trace': fixture_options(fullstack=False, dns_resolver=False,
+                                         tracing=True),
+    'h2_ssl': fixture_options(secure=True),
+    'h2_ssl_cert': fixture_options(secure=True),
+    'h2_ssl_proxy': fixture_options(secure=True),
+    'h2_uds': fixture_options(dns_resolver=False,
+                              platforms=['linux', 'mac', 'posix']),
+}
+
+
+def test_options(needs_fullstack=False, needs_dns=False, proxyable=True,
+                 secure=False, traceable=False):
+  return struct(
+    needs_fullstack=needs_fullstack,
+    needs_dns=needs_dns,
+    proxyable=proxyable,
+    secure=secure,
+    traceable=traceable
+  )
+
+
+# maps test names to options
+END2END_TESTS = {
+    'bad_hostname': test_options(),
+    'binary_metadata': test_options(),
+    'resource_quota_server': test_options(proxyable=False),
+    'call_creds': test_options(secure=True),
+    'cancel_after_accept': test_options(),
+    'cancel_after_client_done': test_options(),
+    'cancel_after_invoke': test_options(),
+    'cancel_before_invoke': test_options(),
+    'cancel_in_a_vacuum': test_options(),
+    'cancel_with_status': test_options(),
+    'compressed_payload': test_options(),
+    'connectivity': test_options(needs_fullstack=True, proxyable=False),
+    'default_host': test_options(needs_fullstack=True, needs_dns=True),
+    'disappearing_server': test_options(needs_fullstack=True),
+    'empty_batch': test_options(),
+    'filter_causes_close': test_options(),
+    'filter_call_init_fails': test_options(),
+    'graceful_server_shutdown': test_options(),
+    'hpack_size': test_options(proxyable=False, traceable=False),
+    'high_initial_seqno': test_options(),
+    'idempotent_request': test_options(),
+    'invoke_large_request': test_options(),
+    'large_metadata': test_options(),
+    'max_concurrent_streams': test_options(proxyable=False),
+    'max_message_length': test_options(),
+    'negative_deadline': test_options(),
+    'network_status_change': test_options(),
+    'no_logging': test_options(traceable=False),
+    'no_op': test_options(),
+    'payload': test_options(),
+    'load_reporting_hook': test_options(),
+    'ping_pong_streaming': test_options(),
+    'ping': test_options(proxyable=False),
+    'registered_call': test_options(),
+    'request_with_flags': test_options(proxyable=False),
+    'request_with_payload': test_options(),
+    'server_finishes_request': test_options(),
+    'shutdown_finishes_calls': test_options(),
+    'shutdown_finishes_tags': test_options(),
+    'simple_cacheable_request': test_options(),
+    'simple_delayed_request': test_options(needs_fullstack=True),
+    'simple_metadata': test_options(),
+    'simple_request': test_options(),
+    'streaming_error_response': test_options(),
+    'trailing_metadata': test_options(),
+    'authority_not_supported': test_options(),
+    'filter_latency': test_options(),
+    'write_buffering': test_options(),
+    'write_buffering_at_end': test_options(),
+}
+
+
+def compatible(fopt, topt):
+  if topt.needs_fullstack:
+    if not fopt.fullstack:
+      return False
+  if topt.needs_dns:
+    if not fopt.dns_resolver:
+      return False
+  if not topt.proxyable:
+    if fopt.includes_proxy:
+      return False
+  if not topt.traceable:
+    if fopt.tracing:
+      return False
+  return True
+
+
+def grpc_end2end_tests():
+  native.cc_library(
+    name = 'end2end_tests',
+    srcs = ['end2end_tests.c', 'end2end_test_utils.c'] + [
+             'tests/%s.c' % t
+             for t in sorted(END2END_TESTS.keys())],
+    hdrs = [
+      'tests/cancel_test_helpers.h',
+      'end2end_tests.h'
+    ],
+    copts = ['-std=c99'],
+    deps = [
+      ':cq_verifier',
+      ':ssl_test_data',
+      ':fake_resolver',
+      ':http_proxy',
+      ':proxy',
+      '//test/core/util:grpc_test_util',
+      '//:grpc',
+      '//test/core/util:gpr_test_util',
+      '//:gpr',
+    ]
+  )
+
+  for f, fopt in END2END_FIXTURES.items():
+    native.cc_binary(
+      name = '%s_test' % f,
+      srcs = ['fixtures/%s.c' % f],
+      copts = ['-std=c99'],
+      deps = [':end2end_tests']
+    )
+    for t, topt in END2END_TESTS.items():
+      #print(compatible(fopt, topt), f, t, fopt, topt)
+      if not compatible(fopt, topt): continue
+      native.sh_test(
+        name = '%s_test@%s' % (f, t),
+        srcs = ['end2end_test.sh'],
+        args = ['$(location %s_test)' % f, t],
+        data = [':%s_test' % f],
+      )
diff --git a/test/core/end2end/invalid_call_argument_test.c b/test/core/end2end/invalid_call_argument_test.c
index 765b6ad1bee8ab67418a4086d13ad65f323ece01..d974d2c8ff9ab048963cffbdab941541e7992506 100644
--- a/test/core/end2end/invalid_call_argument_test.c
+++ b/test/core/end2end/invalid_call_argument_test.c
@@ -573,6 +573,29 @@ static void test_recv_close_on_server_twice() {
   cleanup_test();
 }
 
+static void test_invalid_initial_metadata_reserved_key() {
+  gpr_log(GPR_INFO, "test_invalid_initial_metadata_reserved_key");
+
+  grpc_metadata metadata;
+  metadata.key = ":start_with_colon";
+  metadata.value = "value";
+  metadata.value_length = 6;
+
+  grpc_op *op;
+  prepare_test(1);
+  op = g_state.ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 1;
+  op->data.send_initial_metadata.metadata = &metadata;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  GPR_ASSERT(GRPC_CALL_ERROR_INVALID_METADATA ==
+             grpc_call_start_batch(g_state.call, g_state.ops,
+                                   (size_t)(op - g_state.ops), tag(1), NULL));
+  cleanup_test();
+}
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   grpc_init();
@@ -595,6 +618,7 @@ int main(int argc, char **argv) {
   test_send_server_status_twice();
   test_recv_close_on_server_with_invalid_flags();
   test_recv_close_on_server_twice();
+  test_invalid_initial_metadata_reserved_key();
   grpc_shutdown();
 
   return 0;
diff --git a/test/core/end2end/tests/cancel_after_accept.c b/test/core/end2end/tests/cancel_after_accept.c
index e582c59f2d37de76a1db72b79804befff7ca7a2f..a8e310c683540e4c7d5fff09345eb66e0767f6b5 100644
--- a/test/core/end2end/tests/cancel_after_accept.c
+++ b/test/core/end2end/tests/cancel_after_accept.c
@@ -251,7 +251,11 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  if (args != NULL) grpc_channel_args_destroy(args);
+  if (args != NULL) {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   cq_verifier_destroy(cqv);
   end_test(&f);
diff --git a/test/core/end2end/tests/compressed_payload.c b/test/core/end2end/tests/compressed_payload.c
index 81fc7091f80d31ee027acfd7094dd2f0f4981dd7..d7efe7747bfec71f314c1b979fcaf1700ce0c11a 100644
--- a/test/core/end2end/tests/compressed_payload.c
+++ b/test/core/end2end/tests/compressed_payload.c
@@ -140,8 +140,12 @@ static void request_for_disabled_algorithm(
       NULL, requested_client_compression_algorithm);
   server_args =
       grpc_channel_args_set_compression_algorithm(NULL, GRPC_COMPRESS_NONE);
-  server_args = grpc_channel_args_compression_algorithm_set_state(
-      &server_args, algorithm_to_disable, false);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    server_args = grpc_channel_args_compression_algorithm_set_state(
+        &exec_ctx, &server_args, algorithm_to_disable, false);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   f = begin_test(config, test_name, client_args, server_args);
   cqv = cq_verifier_create(f.cq);
@@ -262,8 +266,12 @@ static void request_for_disabled_algorithm(
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(request_payload_recv);
 
-  grpc_channel_args_destroy(client_args);
-  grpc_channel_args_destroy(server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, client_args);
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   end_test(&f);
   config.tear_down_data(&f);
@@ -512,8 +520,12 @@ static void request_with_payload_template(
 
   cq_verifier_destroy(cqv);
 
-  grpc_channel_args_destroy(client_args);
-  grpc_channel_args_destroy(server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, client_args);
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/filter_call_init_fails.c b/test/core/end2end/tests/filter_call_init_fails.c
index 41ae575fff455073b3bec6095d141eae8b209cdb..ac9d2dd2fe8eafcb5f6da88f49fee50c581eb2c1 100644
--- a/test/core/end2end/tests/filter_call_init_fails.c
+++ b/test/core/end2end/tests/filter_call_init_fails.c
@@ -216,9 +216,11 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               void *and_free_memory) {}
 
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {}
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
+  return GRPC_ERROR_NONE;
+}
 
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {}
@@ -241,7 +243,8 @@ static const grpc_channel_filter test_filter = {
  * Registration
  */
 
-static bool maybe_add_filter(grpc_channel_stack_builder *builder, void *arg) {
+static bool maybe_add_filter(grpc_exec_ctx *exec_ctx,
+                             grpc_channel_stack_builder *builder, void *arg) {
   if (g_enable_filter) {
     // Want to add the filter as close to the end as possible, to make
     // sure that all of the filters work well together.  However, we
diff --git a/test/core/end2end/tests/filter_causes_close.c b/test/core/end2end/tests/filter_causes_close.c
index bf9fd9073d17eb239798817c38cecfd5662be185..45f623c5c7b6d7a465566915186f3fb4d2055ca9 100644
--- a/test/core/end2end/tests/filter_causes_close.c
+++ b/test/core/end2end/tests/filter_causes_close.c
@@ -213,13 +213,13 @@ static void recv_im_ready(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_slice message =
         grpc_slice_from_copied_string("Failure that's not preventable.");
     grpc_transport_stream_op *op = grpc_make_transport_stream_op(NULL);
-    grpc_transport_stream_op_add_close(op, GRPC_STATUS_PERMISSION_DENIED,
-                                       &message);
+    grpc_transport_stream_op_add_close(exec_ctx, op,
+                                       GRPC_STATUS_PERMISSION_DENIED, &message);
     grpc_call_next_op(exec_ctx, elem, op);
   }
-  grpc_exec_ctx_sched(
+  grpc_closure_sched(
       exec_ctx, calld->recv_im_ready,
-      GRPC_ERROR_CREATE_REFERENCING("Forced call to close", &error, 1), NULL);
+      GRPC_ERROR_CREATE_REFERENCING("Forced call to close", &error, 1));
 }
 
 static void start_transport_stream_op(grpc_exec_ctx *exec_ctx,
@@ -228,7 +228,8 @@ static void start_transport_stream_op(grpc_exec_ctx *exec_ctx,
   call_data *calld = elem->call_data;
   if (op->recv_initial_metadata != NULL) {
     calld->recv_im_ready = op->recv_initial_metadata_ready;
-    op->recv_initial_metadata_ready = grpc_closure_create(recv_im_ready, elem);
+    op->recv_initial_metadata_ready =
+        grpc_closure_create(recv_im_ready, elem, grpc_schedule_on_exec_ctx);
   }
   grpc_call_next_op(exec_ctx, elem, op);
 }
@@ -243,9 +244,11 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               void *and_free_memory) {}
 
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {}
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
+  return GRPC_ERROR_NONE;
+}
 
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {}
@@ -268,7 +271,8 @@ static const grpc_channel_filter test_filter = {
  * Registration
  */
 
-static bool maybe_add_filter(grpc_channel_stack_builder *builder, void *arg) {
+static bool maybe_add_filter(grpc_exec_ctx *exec_ctx,
+                             grpc_channel_stack_builder *builder, void *arg) {
   if (g_enable_filter) {
     return grpc_channel_stack_builder_prepend_filter(builder, &test_filter,
                                                      NULL, NULL);
diff --git a/test/core/end2end/tests/filter_latency.c b/test/core/end2end/tests/filter_latency.c
index ea63d4542085d7af2730a067eafd77667fddeea4..dbb5c8dcd9d82e4607b6a35d1668d433da74993d 100644
--- a/test/core/end2end/tests/filter_latency.c
+++ b/test/core/end2end/tests/filter_latency.c
@@ -281,9 +281,11 @@ static void server_destroy_call_elem(grpc_exec_ctx *exec_ctx,
   gpr_mu_unlock(&g_mu);
 }
 
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {}
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
+  return GRPC_ERROR_NONE;
+}
 
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {}
@@ -320,7 +322,8 @@ static const grpc_channel_filter test_server_filter = {
  * Registration
  */
 
-static bool maybe_add_filter(grpc_channel_stack_builder *builder, void *arg) {
+static bool maybe_add_filter(grpc_exec_ctx *exec_ctx,
+                             grpc_channel_stack_builder *builder, void *arg) {
   grpc_channel_filter *filter = arg;
   if (g_enable_filter) {
     // Want to add the filter as close to the end as possible, to make
diff --git a/test/core/end2end/tests/load_reporting_hook.c b/test/core/end2end/tests/load_reporting_hook.c
index 5b75f26bd20eb8aa806f096443b7f2de7359d940..ae5c27062990d4ece37a356977528317dca7504d 100644
--- a/test/core/end2end/tests/load_reporting_hook.c
+++ b/test/core/end2end/tests/load_reporting_hook.c
@@ -311,7 +311,11 @@ static void test_load_reporting_hook(grpc_end2end_test_config config) {
                                 response_msg, &initial_lr_metadata,
                                 &trailing_lr_metadata);
   end_test(&f);
-  grpc_channel_args_destroy(lr_server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, lr_server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   config.tear_down_data(&f);
 }
 
diff --git a/test/core/end2end/tests/max_message_length.c b/test/core/end2end/tests/max_message_length.c
index c222d9dfae7053ae58b3fa32b5edcca614ab6fd7..4a6ef44bb323d69c4f5668f0c397d2b2d73b8a5c 100644
--- a/test/core/end2end/tests/max_message_length.c
+++ b/test/core/end2end/tests/max_message_length.c
@@ -168,8 +168,12 @@ static void test_max_message_length_on_request(grpc_end2end_test_config config,
 
   f = begin_test(config, "test_max_request_message_length", client_args,
                  server_args);
-  if (client_args != NULL) grpc_channel_args_destroy(client_args);
-  if (server_args != NULL) grpc_channel_args_destroy(server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    if (client_args != NULL) grpc_channel_args_destroy(&exec_ctx, client_args);
+    if (server_args != NULL) grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   cqv = cq_verifier_create(f.cq);
 
@@ -342,9 +346,12 @@ static void test_max_message_length_on_response(grpc_end2end_test_config config,
 
   f = begin_test(config, "test_max_response_message_length", client_args,
                  server_args);
-  if (client_args != NULL) grpc_channel_args_destroy(client_args);
-  if (server_args != NULL) grpc_channel_args_destroy(server_args);
-
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    if (client_args != NULL) grpc_channel_args_destroy(&exec_ctx, client_args);
+    if (server_args != NULL) grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   cqv = cq_verifier_create(f.cq);
 
   c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
diff --git a/test/core/end2end/tests/write_buffering.c b/test/core/end2end/tests/write_buffering.c
new file mode 100644
index 0000000000000000000000000000000000000000..856e9f0306f5aae95252f7302f7f6c5af19f09ee
--- /dev/null
+++ b/test/core/end2end/tests/write_buffering.c
@@ -0,0 +1,291 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "test/core/end2end/cq_verifier.h"
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
+                                            const char *test_name,
+                                            grpc_channel_args *client_args,
+                                            grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_server(&f, server_args);
+  config.init_client(&f, client_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_time(int n) {
+  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+}
+
+static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_time(), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(
+                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 .type == GRPC_OP_COMPLETE);
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
+}
+
+/* Client sends a request with payload, server reads then returns status. */
+static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
+  grpc_call *c;
+  grpc_call *s;
+  grpc_slice request_payload_slice1 =
+      grpc_slice_from_copied_string("hello world");
+  grpc_byte_buffer *request_payload1 =
+      grpc_raw_byte_buffer_create(&request_payload_slice1, 1);
+  grpc_slice request_payload_slice2 = grpc_slice_from_copied_string("abc123");
+  grpc_byte_buffer *request_payload2 =
+      grpc_raw_byte_buffer_create(&request_payload_slice2, 1);
+  gpr_timespec deadline = five_seconds_time();
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_request_with_payload", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv1 = NULL;
+  grpc_byte_buffer *request_payload_recv2 = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  char *details = NULL;
+  size_t details_capacity = 0;
+  int was_cancelled = 2;
+
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(2), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  CQ_EXPECT_COMPLETION(cqv, tag(1), true); /* send message is buffered */
+  CQ_EXPECT_COMPLETION(cqv, tag(101), true);
+  cq_verify(cqv);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = request_payload1;
+  op->flags = GRPC_WRITE_BUFFER_HINT;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(3), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  /* recv message should not succeed yet - it's buffered at the client still */
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &request_payload_recv1;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(103), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(2), true);
+  CQ_EXPECT_COMPLETION(cqv, tag(3), true);
+  CQ_EXPECT_COMPLETION(cqv, tag(102), true);
+  cq_verify(cqv);
+
+  /* send another message, this time not buffered */
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = request_payload2;
+  op->flags = 0;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(4), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  /* now the first send should match up with the first recv */
+  CQ_EXPECT_COMPLETION(cqv, tag(103), true);
+  CQ_EXPECT_COMPLETION(cqv, tag(4), true);
+  cq_verify(cqv);
+
+  /* and the next recv should be ready immediately also */
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &request_payload_recv2;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(104), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(104), true);
+  cq_verify(cqv);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(4), NULL);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_OK;
+  op->data.send_status_from_server.status_details = "xyz";
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(105), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(105), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(4), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(status == GRPC_STATUS_OK);
+  GPR_ASSERT(0 == strcmp(details, "xyz"));
+  GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
+  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(byte_buffer_eq_string(request_payload_recv1, "hello world"));
+  GPR_ASSERT(byte_buffer_eq_string(request_payload_recv2, "abc123"));
+
+  gpr_free(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_destroy(c);
+  grpc_call_destroy(s);
+
+  cq_verifier_destroy(cqv);
+
+  grpc_byte_buffer_destroy(request_payload1);
+  grpc_byte_buffer_destroy(request_payload_recv1);
+  grpc_byte_buffer_destroy(request_payload2);
+  grpc_byte_buffer_destroy(request_payload_recv2);
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+void write_buffering(grpc_end2end_test_config config) {
+  test_invoke_request_with_payload(config);
+}
+
+void write_buffering_pre_init(void) {}
diff --git a/test/core/end2end/tests/write_buffering_at_end.c b/test/core/end2end/tests/write_buffering_at_end.c
new file mode 100644
index 0000000000000000000000000000000000000000..43aefcbdbccb86349aee836b1fbce9aabe1e511e
--- /dev/null
+++ b/test/core/end2end/tests/write_buffering_at_end.c
@@ -0,0 +1,280 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "test/core/end2end/cq_verifier.h"
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
+                                            const char *test_name,
+                                            grpc_channel_args *client_args,
+                                            grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_server(&f, server_args);
+  config.init_client(&f, client_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_time(int n) {
+  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+}
+
+static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_time(), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(
+                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 .type == GRPC_OP_COMPLETE);
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
+}
+
+/* Client sends a request with payload, server reads then returns status. */
+static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
+  grpc_call *c;
+  grpc_call *s;
+  grpc_slice request_payload_slice =
+      grpc_slice_from_copied_string("hello world");
+  grpc_byte_buffer *request_payload =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  gpr_timespec deadline = five_seconds_time();
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_request_with_payload", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv1 = NULL;
+  grpc_byte_buffer *request_payload_recv2 = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  char *details = NULL;
+  size_t details_capacity = 0;
+  int was_cancelled = 2;
+
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(2), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  CQ_EXPECT_COMPLETION(cqv, tag(1), true); /* send message is buffered */
+  CQ_EXPECT_COMPLETION(cqv, tag(101), true);
+  cq_verify(cqv);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = request_payload;
+  op->flags = GRPC_WRITE_BUFFER_HINT;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(3), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  /* recv message should not succeed yet - it's buffered at the client still */
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &request_payload_recv1;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(103), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(2), true);
+  CQ_EXPECT_COMPLETION(cqv, tag(3), true);
+  CQ_EXPECT_COMPLETION(cqv, tag(102), true);
+  cq_verify(cqv);
+
+  /* send end of stream: should release the buffering */
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(4), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  /* now the first send should match up with the first recv */
+  CQ_EXPECT_COMPLETION(cqv, tag(103), true);
+  CQ_EXPECT_COMPLETION(cqv, tag(4), true);
+  cq_verify(cqv);
+
+  /* and the next recv should be ready immediately also (and empty) */
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &request_payload_recv2;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(104), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(104), true);
+  cq_verify(cqv);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(4), NULL);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_OK;
+  op->data.send_status_from_server.status_details = "xyz";
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(105), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(105), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(4), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(status == GRPC_STATUS_OK);
+  GPR_ASSERT(0 == strcmp(details, "xyz"));
+  GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
+  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(byte_buffer_eq_string(request_payload_recv1, "hello world"));
+  GPR_ASSERT(request_payload_recv2 == NULL);
+
+  gpr_free(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_destroy(c);
+  grpc_call_destroy(s);
+
+  cq_verifier_destroy(cqv);
+
+  grpc_byte_buffer_destroy(request_payload);
+  grpc_byte_buffer_destroy(request_payload_recv1);
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+void write_buffering_at_end(grpc_end2end_test_config config) {
+  test_invoke_request_with_payload(config);
+}
+
+void write_buffering_at_end_pre_init(void) {}
diff --git a/test/core/http/BUILD b/test/core/http/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..037ede3cd1cd704804c35d6e928eed9bfcc68119
--- /dev/null
+++ b/test/core/http/BUILD
@@ -0,0 +1,49 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+grpc_fuzzer(
+  name = "response_fuzzer",
+  srcs = ["response_fuzzer.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "response_corpus",
+  copts = ["-std=c99"],
+)
+
+grpc_fuzzer(
+  name = "request_fuzzer",
+  srcs = ["request_fuzzer.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "request_corpus",
+  copts = ["-std=c99"],
+)
+
diff --git a/test/core/http/httpcli_test.c b/test/core/http/httpcli_test.c
index 3e312c1ddeefc3ab7abb3e59d54f6562a23fd003..4cdbb5d6da6855bdd71b56beb0d93bc56d95b720 100644
--- a/test/core/http/httpcli_test.c
+++ b/test/core/http/httpcli_test.c
@@ -90,10 +90,11 @@ static void test_get(int port) {
   grpc_http_response response;
   memset(&response, 0, sizeof(response));
   grpc_resource_quota *resource_quota = grpc_resource_quota_create("test_get");
-  grpc_httpcli_get(&exec_ctx, &g_context, &g_pops, resource_quota, &req,
-                   n_seconds_time(15),
-                   grpc_closure_create(on_finish, &response), &response);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_httpcli_get(
+      &exec_ctx, &g_context, &g_pops, resource_quota, &req, n_seconds_time(15),
+      grpc_closure_create(on_finish, &response, grpc_schedule_on_exec_ctx),
+      &response);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   gpr_mu_lock(g_mu);
   while (!g_done) {
     grpc_pollset_worker *worker = NULL;
@@ -130,10 +131,12 @@ static void test_post(int port) {
   grpc_http_response response;
   memset(&response, 0, sizeof(response));
   grpc_resource_quota *resource_quota = grpc_resource_quota_create("test_post");
-  grpc_httpcli_post(&exec_ctx, &g_context, &g_pops, resource_quota, &req,
-                    "hello", 5, n_seconds_time(15),
-                    grpc_closure_create(on_finish, &response), &response);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_httpcli_post(
+      &exec_ctx, &g_context, &g_pops, resource_quota, &req, "hello", 5,
+      n_seconds_time(15),
+      grpc_closure_create(on_finish, &response, grpc_schedule_on_exec_ctx),
+      &response);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   gpr_mu_lock(g_mu);
   while (!g_done) {
     grpc_pollset_worker *worker = NULL;
@@ -207,7 +210,8 @@ int main(int argc, char **argv) {
   test_post(port);
 
   grpc_httpcli_context_destroy(&g_context);
-  grpc_closure_init(&destroyed, destroy_pops, &g_pops);
+  grpc_closure_init(&destroyed, destroy_pops, &g_pops,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, grpc_polling_entity_pollset(&g_pops),
                         &destroyed);
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/test/core/http/httpscli_test.c b/test/core/http/httpscli_test.c
index d06035149ef0379cc4fe9336ecf9a478e9274a9b..72017cfa54e29b02682708464b623466267e3235 100644
--- a/test/core/http/httpscli_test.c
+++ b/test/core/http/httpscli_test.c
@@ -91,10 +91,11 @@ static void test_get(int port) {
   grpc_http_response response;
   memset(&response, 0, sizeof(response));
   grpc_resource_quota *resource_quota = grpc_resource_quota_create("test_get");
-  grpc_httpcli_get(&exec_ctx, &g_context, &g_pops, resource_quota, &req,
-                   n_seconds_time(15),
-                   grpc_closure_create(on_finish, &response), &response);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_httpcli_get(
+      &exec_ctx, &g_context, &g_pops, resource_quota, &req, n_seconds_time(15),
+      grpc_closure_create(on_finish, &response, grpc_schedule_on_exec_ctx),
+      &response);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   gpr_mu_lock(g_mu);
   while (!g_done) {
     grpc_pollset_worker *worker = NULL;
@@ -132,10 +133,12 @@ static void test_post(int port) {
   grpc_http_response response;
   memset(&response, 0, sizeof(response));
   grpc_resource_quota *resource_quota = grpc_resource_quota_create("test_post");
-  grpc_httpcli_post(&exec_ctx, &g_context, &g_pops, resource_quota, &req,
-                    "hello", 5, n_seconds_time(15),
-                    grpc_closure_create(on_finish, &response), &response);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_httpcli_post(
+      &exec_ctx, &g_context, &g_pops, resource_quota, &req, "hello", 5,
+      n_seconds_time(15),
+      grpc_closure_create(on_finish, &response, grpc_schedule_on_exec_ctx),
+      &response);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   gpr_mu_lock(g_mu);
   while (!g_done) {
     grpc_pollset_worker *worker = NULL;
@@ -210,7 +213,8 @@ int main(int argc, char **argv) {
   test_post(port);
 
   grpc_httpcli_context_destroy(&g_context);
-  grpc_closure_init(&destroyed, destroy_pops, &g_pops);
+  grpc_closure_init(&destroyed, destroy_pops, &g_pops,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, grpc_polling_entity_pollset(&g_pops),
                         &destroyed);
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/test/core/internal_api_canaries/iomgr.c b/test/core/internal_api_canaries/iomgr.c
index de03c47c13eb1890cb46a1649b74517efd73474f..3225b9dc198f0bd79ca254c21a3a5776bb7e2603 100644
--- a/test/core/internal_api_canaries/iomgr.c
+++ b/test/core/internal_api_canaries/iomgr.c
@@ -48,7 +48,7 @@
 static void test_code(void) {
   /* iomgr.h */
   grpc_iomgr_init();
-  grpc_iomgr_shutdown();
+  grpc_iomgr_shutdown(NULL);
 
   /* closure.h */
   grpc_closure closure;
@@ -60,9 +60,9 @@ static void test_code(void) {
   closure_list.head = NULL;
   closure_list.tail = NULL;
 
-  grpc_closure_init(&closure, NULL, NULL);
+  grpc_closure_init(&closure, NULL, NULL, grpc_schedule_on_exec_ctx);
 
-  grpc_closure_create(NULL, NULL);
+  grpc_closure_create(NULL, NULL, grpc_schedule_on_exec_ctx);
 
   grpc_closure_list_move(NULL, NULL);
   grpc_closure_list_append(NULL, NULL, GRPC_ERROR_CREATE("Foo"));
@@ -72,8 +72,8 @@ static void test_code(void) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_exec_ctx_flush(&exec_ctx);
   grpc_exec_ctx_finish(&exec_ctx);
-  grpc_exec_ctx_sched(&exec_ctx, &closure, GRPC_ERROR_CREATE("Foo"), NULL);
-  grpc_exec_ctx_enqueue_list(&exec_ctx, &closure_list, NULL);
+  grpc_closure_sched(&exec_ctx, &closure, GRPC_ERROR_CREATE("Foo"));
+  grpc_closure_list_sched(&exec_ctx, &closure_list);
 
   /* endpoint.h */
   grpc_endpoint endpoint;
@@ -99,8 +99,7 @@ static void test_code(void) {
 
   /* executor.h */
   grpc_executor_init();
-  grpc_executor_push(&closure, GRPC_ERROR_CREATE("Phi"));
-  grpc_executor_shutdown();
+  grpc_executor_shutdown(NULL);
 
   /* pollset.h */
   grpc_pollset_size();
diff --git a/test/core/iomgr/combiner_test.c b/test/core/iomgr/combiner_test.c
index f7d5809be74785eebe654a154695d95384980639..9b6d6ff9b463024e4dae48130d6724816bfddca3 100644
--- a/test/core/iomgr/combiner_test.c
+++ b/test/core/iomgr/combiner_test.c
@@ -59,9 +59,10 @@ static void test_execute_one(void) {
   grpc_combiner *lock = grpc_combiner_create(NULL);
   bool done = false;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_combiner_execute(&exec_ctx, lock,
-                        grpc_closure_create(set_bool_to_true, &done),
-                        GRPC_ERROR_NONE, false);
+  grpc_closure_sched(&exec_ctx,
+                     grpc_closure_create(set_bool_to_true, &done,
+                                         grpc_combiner_scheduler(lock, false)),
+                     GRPC_ERROR_NONE);
   grpc_exec_ctx_flush(&exec_ctx);
   GPR_ASSERT(done);
   grpc_combiner_destroy(&exec_ctx, lock);
@@ -94,9 +95,10 @@ static void execute_many_loop(void *a) {
       ex_args *c = gpr_malloc(sizeof(*c));
       c->ctr = &args->ctr;
       c->value = n++;
-      grpc_combiner_execute(&exec_ctx, args->lock,
-                            grpc_closure_create(check_one, c), GRPC_ERROR_NONE,
-                            false);
+      grpc_closure_sched(
+          &exec_ctx, grpc_closure_create(check_one, c, grpc_combiner_scheduler(
+                                                           args->lock, false)),
+          GRPC_ERROR_NONE);
       grpc_exec_ctx_flush(&exec_ctx);
     }
     // sleep for a little bit, to test a combiner draining and another thread
@@ -134,9 +136,10 @@ static void in_finally(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
 }
 
 static void add_finally(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  grpc_combiner_execute_finally(exec_ctx, arg,
-                                grpc_closure_create(in_finally, NULL),
-                                GRPC_ERROR_NONE, false);
+  grpc_closure_sched(exec_ctx, grpc_closure_create(
+                                   in_finally, NULL,
+                                   grpc_combiner_finally_scheduler(arg, false)),
+                     GRPC_ERROR_NONE);
 }
 
 static void test_execute_finally(void) {
@@ -144,8 +147,10 @@ static void test_execute_finally(void) {
 
   grpc_combiner *lock = grpc_combiner_create(NULL);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_combiner_execute(&exec_ctx, lock, grpc_closure_create(add_finally, lock),
-                        GRPC_ERROR_NONE, false);
+  grpc_closure_sched(&exec_ctx,
+                     grpc_closure_create(add_finally, lock,
+                                         grpc_combiner_scheduler(lock, false)),
+                     GRPC_ERROR_NONE);
   grpc_exec_ctx_flush(&exec_ctx);
   GPR_ASSERT(got_in_finally);
   grpc_combiner_destroy(&exec_ctx, lock);
diff --git a/test/core/iomgr/endpoint_pair_test.c b/test/core/iomgr/endpoint_pair_test.c
index 2a257a7ceacf6a82116dab1e32daec809f19beda..f02171f2ef78fcf00a939079627b3cb572a73e03 100644
--- a/test/core/iomgr/endpoint_pair_test.c
+++ b/test/core/iomgr/endpoint_pair_test.c
@@ -81,7 +81,8 @@ int main(int argc, char **argv) {
   g_pollset = gpr_malloc(grpc_pollset_size());
   grpc_pollset_init(g_pollset, &g_mu);
   grpc_endpoint_tests(configs[0], g_pollset, g_mu);
-  grpc_closure_init(&destroyed, destroy_pollset, g_pollset);
+  grpc_closure_init(&destroyed, destroy_pollset, g_pollset,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
   grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
diff --git a/test/core/iomgr/endpoint_tests.c b/test/core/iomgr/endpoint_tests.c
index 8186ea7e85611d34cc753c309f7abc81f7f2b755..df5dd209031b98efa7e382a40a4405201766a712 100644
--- a/test/core/iomgr/endpoint_tests.c
+++ b/test/core/iomgr/endpoint_tests.c
@@ -41,6 +41,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+
+#include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/test_config.h"
 
 /*
@@ -211,9 +213,10 @@ static void read_and_write_test(grpc_endpoint_test_config config,
   state.write_done = 0;
   state.current_read_data = 0;
   state.current_write_data = 0;
-  grpc_closure_init(&state.done_read, read_and_write_test_read_handler, &state);
+  grpc_closure_init(&state.done_read, read_and_write_test_read_handler, &state,
+                    grpc_schedule_on_exec_ctx);
   grpc_closure_init(&state.done_write, read_and_write_test_write_handler,
-                    &state);
+                    &state, grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&state.outgoing);
   grpc_slice_buffer_init(&state.incoming);
 
@@ -249,8 +252,8 @@ static void read_and_write_test(grpc_endpoint_test_config config,
   grpc_exec_ctx_flush(&exec_ctx);
 
   end_test(config);
-  grpc_slice_buffer_destroy(&state.outgoing);
-  grpc_slice_buffer_destroy(&state.incoming);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &state.outgoing);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &state.incoming);
   grpc_endpoint_destroy(&exec_ctx, state.read_ep);
   grpc_endpoint_destroy(&exec_ctx, state.write_ep);
   grpc_exec_ctx_finish(&exec_ctx);
@@ -290,21 +293,24 @@ static void multiple_shutdown_test(grpc_endpoint_test_config config) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_endpoint_add_to_pollset(&exec_ctx, f.client_ep, g_pollset);
   grpc_endpoint_read(&exec_ctx, f.client_ep, &slice_buffer,
-                     grpc_closure_create(inc_on_failure, &fail_count));
+                     grpc_closure_create(inc_on_failure, &fail_count,
+                                         grpc_schedule_on_exec_ctx));
   wait_for_fail_count(&exec_ctx, &fail_count, 0);
   grpc_endpoint_shutdown(&exec_ctx, f.client_ep);
   wait_for_fail_count(&exec_ctx, &fail_count, 1);
   grpc_endpoint_read(&exec_ctx, f.client_ep, &slice_buffer,
-                     grpc_closure_create(inc_on_failure, &fail_count));
+                     grpc_closure_create(inc_on_failure, &fail_count,
+                                         grpc_schedule_on_exec_ctx));
   wait_for_fail_count(&exec_ctx, &fail_count, 2);
   grpc_slice_buffer_add(&slice_buffer, grpc_slice_from_copied_string("a"));
   grpc_endpoint_write(&exec_ctx, f.client_ep, &slice_buffer,
-                      grpc_closure_create(inc_on_failure, &fail_count));
+                      grpc_closure_create(inc_on_failure, &fail_count,
+                                          grpc_schedule_on_exec_ctx));
   wait_for_fail_count(&exec_ctx, &fail_count, 3);
   grpc_endpoint_shutdown(&exec_ctx, f.client_ep);
   wait_for_fail_count(&exec_ctx, &fail_count, 3);
 
-  grpc_slice_buffer_destroy(&slice_buffer);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &slice_buffer);
 
   grpc_endpoint_destroy(&exec_ctx, f.client_ep);
   grpc_endpoint_destroy(&exec_ctx, f.server_ep);
diff --git a/test/core/iomgr/ev_epoll_linux_test.c b/test/core/iomgr/ev_epoll_linux_test.c
index 564b05d7f4c727335dbdd53e1b01d79b53056b01..40ae91bc6de601faf5518f43b51bcfd798055808 100644
--- a/test/core/iomgr/ev_epoll_linux_test.c
+++ b/test/core/iomgr/ev_epoll_linux_test.c
@@ -102,7 +102,8 @@ static void test_pollset_cleanup(grpc_exec_ctx *exec_ctx,
   int i;
 
   for (i = 0; i < num_pollsets; i++) {
-    grpc_closure_init(&destroyed, destroy_pollset, pollsets[i].pollset);
+    grpc_closure_init(&destroyed, destroy_pollset, pollsets[i].pollset,
+                      grpc_schedule_on_exec_ctx);
     grpc_pollset_shutdown(exec_ctx, pollsets[i].pollset, &destroyed);
 
     grpc_exec_ctx_flush(exec_ctx);
@@ -236,7 +237,11 @@ int main(int argc, char **argv) {
             "strategy. and the current strategy is: '%s'",
             poll_strategy);
   }
-  grpc_iomgr_shutdown();
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_iomgr_shutdown(&exec_ctx);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   return 0;
 }
 #else /* defined(GRPC_LINUX_EPOLL) */
diff --git a/test/core/iomgr/fd_conservation_posix_test.c b/test/core/iomgr/fd_conservation_posix_test.c
index 652b37eb6f461a54421f8bcefe3d8c748fe8d155..3dffa02c3c809b3790b375b5f28d92943c7e084a 100644
--- a/test/core/iomgr/fd_conservation_posix_test.c
+++ b/test/core/iomgr/fd_conservation_posix_test.c
@@ -65,6 +65,10 @@ int main(int argc, char **argv) {
 
   grpc_resource_quota_unref(resource_quota);
 
-  grpc_iomgr_shutdown();
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_iomgr_shutdown(&exec_ctx);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   return 0;
 }
diff --git a/test/core/iomgr/fd_posix_test.c b/test/core/iomgr/fd_posix_test.c
index 6166699fe6286e2f4dd44bdff419aaefb4a71b83..a617bfc6469937a09e5fa60284eedceaecc22592 100644
--- a/test/core/iomgr/fd_posix_test.c
+++ b/test/core/iomgr/fd_posix_test.c
@@ -219,8 +219,8 @@ static void listen_cb(grpc_exec_ctx *exec_ctx, void *arg, /*=sv_arg*/
   se->sv = sv;
   se->em_fd = grpc_fd_create(fd, "listener");
   grpc_pollset_add_fd(exec_ctx, g_pollset, se->em_fd);
-  se->session_read_closure.cb = session_read_cb;
-  se->session_read_closure.cb_arg = se;
+  grpc_closure_init(&se->session_read_closure, session_read_cb, se,
+                    grpc_schedule_on_exec_ctx);
   grpc_fd_notify_on_read(exec_ctx, se->em_fd, &se->session_read_closure);
 
   grpc_fd_notify_on_read(exec_ctx, listen_em_fd, &sv->listen_closure);
@@ -249,8 +249,8 @@ static int server_start(grpc_exec_ctx *exec_ctx, server *sv) {
   sv->em_fd = grpc_fd_create(fd, "server");
   grpc_pollset_add_fd(exec_ctx, g_pollset, sv->em_fd);
   /* Register to be interested in reading from listen_fd. */
-  sv->listen_closure.cb = listen_cb;
-  sv->listen_closure.cb_arg = sv;
+  grpc_closure_init(&sv->listen_closure, listen_cb, sv,
+                    grpc_schedule_on_exec_ctx);
   grpc_fd_notify_on_read(exec_ctx, sv->em_fd, &sv->listen_closure);
 
   return port;
@@ -333,8 +333,8 @@ static void client_session_write(grpc_exec_ctx *exec_ctx, void *arg, /*client */
   if (errno == EAGAIN) {
     gpr_mu_lock(g_mu);
     if (cl->client_write_cnt < CLIENT_TOTAL_WRITE_CNT) {
-      cl->write_closure.cb = client_session_write;
-      cl->write_closure.cb_arg = cl;
+      grpc_closure_init(&cl->write_closure, client_session_write, cl,
+                        grpc_schedule_on_exec_ctx);
       grpc_fd_notify_on_write(exec_ctx, cl->em_fd, &cl->write_closure);
       cl->client_write_cnt++;
     } else {
@@ -459,10 +459,10 @@ static void test_grpc_fd_change(void) {
   grpc_closure second_closure;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
-  first_closure.cb = first_read_callback;
-  first_closure.cb_arg = &a;
-  second_closure.cb = second_read_callback;
-  second_closure.cb_arg = &b;
+  grpc_closure_init(&first_closure, first_read_callback, &a,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&second_closure, second_read_callback, &b,
+                    grpc_schedule_on_exec_ctx);
 
   init_change_data(&a);
   init_change_data(&b);
@@ -546,11 +546,13 @@ int main(int argc, char **argv) {
   grpc_pollset_init(g_pollset, &g_mu);
   test_grpc_fd();
   test_grpc_fd_change();
-  grpc_closure_init(&destroyed, destroy_pollset, g_pollset);
+  grpc_closure_init(&destroyed, destroy_pollset, g_pollset,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
-  grpc_exec_ctx_finish(&exec_ctx);
+  grpc_exec_ctx_flush(&exec_ctx);
   gpr_free(g_pollset);
-  grpc_iomgr_shutdown();
+  grpc_iomgr_shutdown(&exec_ctx);
+  grpc_exec_ctx_finish(&exec_ctx);
   return 0;
 }
 
diff --git a/test/core/iomgr/resolve_address_test.c b/test/core/iomgr/resolve_address_test.c
index 2dd0d88b3f80b2cf82d08204e04388651d29060f..84f4ed4c90e8990f8dbd2adf6fc3458a5986d7bd 100644
--- a/test/core/iomgr/resolve_address_test.c
+++ b/test/core/iomgr/resolve_address_test.c
@@ -32,8 +32,10 @@
  */
 
 #include "src/core/lib/iomgr/resolve_address.h"
+#include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
+#include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr.h"
@@ -46,16 +48,73 @@ static gpr_timespec test_deadline(void) {
 typedef struct args_struct {
   gpr_event ev;
   grpc_resolved_addresses *addrs;
+  gpr_atm done_atm;
+  gpr_mu *mu;
+  grpc_pollset *pollset;
+  grpc_pollset_set *pollset_set;
 } args_struct;
 
-void args_init(args_struct *args) {
+static void do_nothing(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {}
+
+void args_init(grpc_exec_ctx *exec_ctx, args_struct *args) {
   gpr_event_init(&args->ev);
+  args->pollset = gpr_malloc(grpc_pollset_size());
+  grpc_pollset_init(args->pollset, &args->mu);
+  args->pollset_set = grpc_pollset_set_create();
+  grpc_pollset_set_add_pollset(exec_ctx, args->pollset_set, args->pollset);
   args->addrs = NULL;
 }
 
-void args_finish(args_struct *args) {
+void args_finish(grpc_exec_ctx *exec_ctx, args_struct *args) {
   GPR_ASSERT(gpr_event_wait(&args->ev, test_deadline()));
   grpc_resolved_addresses_destroy(args->addrs);
+  grpc_pollset_set_del_pollset(exec_ctx, args->pollset_set, args->pollset);
+  grpc_pollset_set_destroy(args->pollset_set);
+  grpc_closure do_nothing_cb;
+  grpc_closure_init(&do_nothing_cb, do_nothing, NULL,
+                    grpc_schedule_on_exec_ctx);
+  grpc_pollset_shutdown(exec_ctx, args->pollset, &do_nothing_cb);
+  // exec_ctx needs to be flushed before calling grpc_pollset_destroy()
+  grpc_exec_ctx_flush(exec_ctx);
+  grpc_pollset_destroy(args->pollset);
+  gpr_free(args->pollset);
+}
+
+static gpr_timespec n_sec_deadline(int seconds) {
+  return gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                      gpr_time_from_seconds(seconds, GPR_TIMESPAN));
+}
+
+static void actually_poll(void *argsp) {
+  args_struct *args = argsp;
+  gpr_timespec deadline = n_sec_deadline(10);
+  while (true) {
+    bool done = gpr_atm_acq_load(&args->done_atm) != 0;
+    if (done) {
+      break;
+    }
+    gpr_timespec time_left =
+        gpr_time_sub(deadline, gpr_now(GPR_CLOCK_REALTIME));
+    gpr_log(GPR_DEBUG, "done=%d, time_left=%" PRId64 ".%09d", done,
+            time_left.tv_sec, time_left.tv_nsec);
+    GPR_ASSERT(gpr_time_cmp(time_left, gpr_time_0(GPR_TIMESPAN)) >= 0);
+    grpc_pollset_worker *worker = NULL;
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    gpr_mu_lock(args->mu);
+    GRPC_LOG_IF_ERROR(
+        "pollset_work",
+        grpc_pollset_work(&exec_ctx, args->pollset, &worker,
+                          gpr_now(GPR_CLOCK_REALTIME), n_sec_deadline(1)));
+    gpr_mu_unlock(args->mu);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  gpr_event_set(&args->ev, (void *)1);
+}
+
+static void poll_pollset_until_request_done(args_struct *args) {
+  gpr_atm_rel_store(&args->done_atm, 0);
+  gpr_thd_id id;
+  gpr_thd_new(&id, actually_poll, args, NULL);
 }
 
 static void must_succeed(grpc_exec_ctx *exec_ctx, void *argsp,
@@ -64,53 +123,65 @@ static void must_succeed(grpc_exec_ctx *exec_ctx, void *argsp,
   GPR_ASSERT(err == GRPC_ERROR_NONE);
   GPR_ASSERT(args->addrs != NULL);
   GPR_ASSERT(args->addrs->naddrs > 0);
-  gpr_event_set(&args->ev, (void *)1);
+  gpr_atm_rel_store(&args->done_atm, 1);
 }
 
 static void must_fail(grpc_exec_ctx *exec_ctx, void *argsp, grpc_error *err) {
   args_struct *args = argsp;
   GPR_ASSERT(err != GRPC_ERROR_NONE);
-  gpr_event_set(&args->ev, (void *)1);
+  gpr_atm_rel_store(&args->done_atm, 1);
 }
 
 static void test_localhost(void) {
-  args_struct args;
-  args_init(&args);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_resolve_address(&exec_ctx, "localhost:1", NULL,
-                       grpc_closure_create(must_succeed, &args), &args.addrs);
+  args_struct args;
+  args_init(&exec_ctx, &args);
+  poll_pollset_until_request_done(&args);
+  grpc_resolve_address(
+      &exec_ctx, "localhost:1", NULL, args.pollset_set,
+      grpc_closure_create(must_succeed, &args, grpc_schedule_on_exec_ctx),
+      &args.addrs);
+  args_finish(&exec_ctx, &args);
   grpc_exec_ctx_finish(&exec_ctx);
-  args_finish(&args);
 }
 
 static void test_default_port(void) {
-  args_struct args;
-  args_init(&args);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_resolve_address(&exec_ctx, "localhost", "1",
-                       grpc_closure_create(must_succeed, &args), &args.addrs);
+  args_struct args;
+  args_init(&exec_ctx, &args);
+  poll_pollset_until_request_done(&args);
+  grpc_resolve_address(
+      &exec_ctx, "localhost", "1", args.pollset_set,
+      grpc_closure_create(must_succeed, &args, grpc_schedule_on_exec_ctx),
+      &args.addrs);
+  args_finish(&exec_ctx, &args);
   grpc_exec_ctx_finish(&exec_ctx);
-  args_finish(&args);
 }
 
 static void test_missing_default_port(void) {
-  args_struct args;
-  args_init(&args);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_resolve_address(&exec_ctx, "localhost", NULL,
-                       grpc_closure_create(must_fail, &args), &args.addrs);
+  args_struct args;
+  args_init(&exec_ctx, &args);
+  poll_pollset_until_request_done(&args);
+  grpc_resolve_address(
+      &exec_ctx, "localhost", NULL, args.pollset_set,
+      grpc_closure_create(must_fail, &args, grpc_schedule_on_exec_ctx),
+      &args.addrs);
+  args_finish(&exec_ctx, &args);
   grpc_exec_ctx_finish(&exec_ctx);
-  args_finish(&args);
 }
 
 static void test_ipv6_with_port(void) {
-  args_struct args;
-  args_init(&args);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_resolve_address(&exec_ctx, "[2001:db8::1]:1", NULL,
-                       grpc_closure_create(must_succeed, &args), &args.addrs);
+  args_struct args;
+  args_init(&exec_ctx, &args);
+  poll_pollset_until_request_done(&args);
+  grpc_resolve_address(
+      &exec_ctx, "[2001:db8::1]:1", NULL, args.pollset_set,
+      grpc_closure_create(must_succeed, &args, grpc_schedule_on_exec_ctx),
+      &args.addrs);
+  args_finish(&exec_ctx, &args);
   grpc_exec_ctx_finish(&exec_ctx);
-  args_finish(&args);
 }
 
 static void test_ipv6_without_port(void) {
@@ -119,13 +190,16 @@ static void test_ipv6_without_port(void) {
   };
   unsigned i;
   for (i = 0; i < sizeof(kCases) / sizeof(*kCases); i++) {
-    args_struct args;
-    args_init(&args);
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resolve_address(&exec_ctx, kCases[i], "80",
-                         grpc_closure_create(must_succeed, &args), &args.addrs);
+    args_struct args;
+    args_init(&exec_ctx, &args);
+    poll_pollset_until_request_done(&args);
+    grpc_resolve_address(
+        &exec_ctx, kCases[i], "80", args.pollset_set,
+        grpc_closure_create(must_succeed, &args, grpc_schedule_on_exec_ctx),
+        &args.addrs);
+    args_finish(&exec_ctx, &args);
     grpc_exec_ctx_finish(&exec_ctx);
-    args_finish(&args);
   }
 }
 
@@ -135,13 +209,16 @@ static void test_invalid_ip_addresses(void) {
   };
   unsigned i;
   for (i = 0; i < sizeof(kCases) / sizeof(*kCases); i++) {
-    args_struct args;
-    args_init(&args);
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resolve_address(&exec_ctx, kCases[i], NULL,
-                         grpc_closure_create(must_fail, &args), &args.addrs);
+    args_struct args;
+    args_init(&exec_ctx, &args);
+    poll_pollset_until_request_done(&args);
+    grpc_resolve_address(
+        &exec_ctx, kCases[i], NULL, args.pollset_set,
+        grpc_closure_create(must_fail, &args, grpc_schedule_on_exec_ctx),
+        &args.addrs);
+    args_finish(&exec_ctx, &args);
     grpc_exec_ctx_finish(&exec_ctx);
-    args_finish(&args);
   }
 }
 
@@ -151,13 +228,16 @@ static void test_unparseable_hostports(void) {
   };
   unsigned i;
   for (i = 0; i < sizeof(kCases) / sizeof(*kCases); i++) {
-    args_struct args;
-    args_init(&args);
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resolve_address(&exec_ctx, kCases[i], "1",
-                         grpc_closure_create(must_fail, &args), &args.addrs);
+    args_struct args;
+    args_init(&exec_ctx, &args);
+    poll_pollset_until_request_done(&args);
+    grpc_resolve_address(
+        &exec_ctx, kCases[i], "1", args.pollset_set,
+        grpc_closure_create(must_fail, &args, grpc_schedule_on_exec_ctx),
+        &args.addrs);
+    args_finish(&exec_ctx, &args);
     grpc_exec_ctx_finish(&exec_ctx);
-    args_finish(&args);
   }
 }
 
@@ -172,7 +252,11 @@ int main(int argc, char **argv) {
   test_ipv6_without_port();
   test_invalid_ip_addresses();
   test_unparseable_hostports();
-  grpc_iomgr_shutdown();
-  grpc_executor_shutdown();
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_executor_shutdown(&exec_ctx);
+    grpc_iomgr_shutdown(&exec_ctx);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   return 0;
 }
diff --git a/test/core/iomgr/resource_quota_test.c b/test/core/iomgr/resource_quota_test.c
index a82d44f7f8558ee17a7fc05035a8dec36395d574..a5b28f210d8e761baf719165a4e077e974d47c7b 100644
--- a/test/core/iomgr/resource_quota_test.c
+++ b/test/core/iomgr/resource_quota_test.c
@@ -36,6 +36,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/test_config.h"
 
 static void inc_int_cb(grpc_exec_ctx *exec_ctx, void *a, grpc_error *error) {
@@ -45,7 +46,9 @@ static void inc_int_cb(grpc_exec_ctx *exec_ctx, void *a, grpc_error *error) {
 static void set_bool_cb(grpc_exec_ctx *exec_ctx, void *a, grpc_error *error) {
   *(bool *)a = true;
 }
-grpc_closure *set_bool(bool *p) { return grpc_closure_create(set_bool_cb, p); }
+grpc_closure *set_bool(bool *p) {
+  return grpc_closure_create(set_bool_cb, p, grpc_schedule_on_exec_ctx);
+}
 
 typedef struct {
   size_t size;
@@ -67,7 +70,7 @@ grpc_closure *make_reclaimer(grpc_resource_user *resource_user, size_t size,
   a->size = size;
   a->resource_user = resource_user;
   a->then = then;
-  return grpc_closure_create(reclaimer_cb, a);
+  return grpc_closure_create(reclaimer_cb, a, grpc_schedule_on_exec_ctx);
 }
 
 static void unused_reclaimer_cb(grpc_exec_ctx *exec_ctx, void *arg,
@@ -76,7 +79,8 @@ static void unused_reclaimer_cb(grpc_exec_ctx *exec_ctx, void *arg,
   grpc_closure_run(exec_ctx, arg, GRPC_ERROR_NONE);
 }
 grpc_closure *make_unused_reclaimer(grpc_closure *then) {
-  return grpc_closure_create(unused_reclaimer_cb, then);
+  return grpc_closure_create(unused_reclaimer_cb, then,
+                             grpc_schedule_on_exec_ctx);
 }
 
 static void destroy_user(grpc_resource_user *usr) {
@@ -631,7 +635,11 @@ static void test_one_slice(void) {
     GPR_ASSERT(num_allocs == start_allocs + 1);
   }
 
-  grpc_slice_buffer_destroy(&buffer);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_slice_buffer_destroy_internal(&exec_ctx, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   destroy_user(usr);
   grpc_resource_quota_unref(q);
 }
@@ -667,7 +675,11 @@ static void test_one_slice_deleted_late(void) {
   }
 
   grpc_resource_quota_unref(q);
-  grpc_slice_buffer_destroy(&buffer);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_slice_buffer_destroy_internal(&exec_ctx, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 }
 
 int main(int argc, char **argv) {
diff --git a/test/core/iomgr/tcp_client_posix_test.c b/test/core/iomgr/tcp_client_posix_test.c
index 5fab826fb778ae60fa6a2001d77178cc7dcadfc1..0ea7a000eb430f074eb8e8723a6f3bf986162db1 100644
--- a/test/core/iomgr/tcp_client_posix_test.c
+++ b/test/core/iomgr/tcp_client_posix_test.c
@@ -113,7 +113,7 @@ void test_succeeds(void) {
   /* connect to it */
   GPR_ASSERT(getsockname(svr_fd, (struct sockaddr *)addr,
                          (socklen_t *)&resolved_addr.len) == 0);
-  grpc_closure_init(&done, must_succeed, NULL);
+  grpc_closure_init(&done, must_succeed, NULL, grpc_schedule_on_exec_ctx);
   grpc_tcp_client_connect(&exec_ctx, &done, &g_connecting, g_pollset_set, NULL,
                           &resolved_addr, gpr_inf_future(GPR_CLOCK_REALTIME));
 
@@ -163,7 +163,7 @@ void test_fails(void) {
   gpr_mu_unlock(g_mu);
 
   /* connect to a broken address */
-  grpc_closure_init(&done, must_fail, NULL);
+  grpc_closure_init(&done, must_fail, NULL, grpc_schedule_on_exec_ctx);
   grpc_tcp_client_connect(&exec_ctx, &done, &g_connecting, g_pollset_set, NULL,
                           &resolved_addr, gpr_inf_future(GPR_CLOCK_REALTIME));
 
@@ -207,7 +207,8 @@ int main(int argc, char **argv) {
   gpr_log(GPR_ERROR, "End of first test");
   test_fails();
   grpc_pollset_set_destroy(g_pollset_set);
-  grpc_closure_init(&destroyed, destroy_pollset, g_pollset);
+  grpc_closure_init(&destroyed, destroy_pollset, g_pollset,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
   grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
diff --git a/test/core/iomgr/tcp_posix_test.c b/test/core/iomgr/tcp_posix_test.c
index 5eafa570bbf43a48d80a8a0c89d6741de54207cd..cabb64eb8f1f00827347119367883887cd8da35d 100644
--- a/test/core/iomgr/tcp_posix_test.c
+++ b/test/core/iomgr/tcp_posix_test.c
@@ -50,6 +50,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+
+#include "src/core/lib/slice/slice_internal.h"
 #include "test/core/iomgr/endpoint_tests.h"
 #include "test/core/util/test_config.h"
 
@@ -184,7 +186,7 @@ static void read_test(size_t num_bytes, size_t slice_size) {
   grpc_resource_quota *resource_quota = grpc_resource_quota_create("read_test");
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "read_test"), resource_quota,
                        slice_size, "test");
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   grpc_endpoint_add_to_pollset(&exec_ctx, ep, g_pollset);
 
   written_bytes = fill_socket_partial(sv[0], num_bytes);
@@ -194,7 +196,7 @@ static void read_test(size_t num_bytes, size_t slice_size) {
   state.read_bytes = 0;
   state.target_read_bytes = written_bytes;
   grpc_slice_buffer_init(&state.incoming);
-  grpc_closure_init(&state.read_cb, read_cb, &state);
+  grpc_closure_init(&state.read_cb, read_cb, &state, grpc_schedule_on_exec_ctx);
 
   grpc_endpoint_read(&exec_ctx, ep, &state.incoming, &state.read_cb);
 
@@ -212,7 +214,7 @@ static void read_test(size_t num_bytes, size_t slice_size) {
   GPR_ASSERT(state.read_bytes == state.target_read_bytes);
   gpr_mu_unlock(g_mu);
 
-  grpc_slice_buffer_destroy(&state.incoming);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &state.incoming);
   grpc_endpoint_destroy(&exec_ctx, ep);
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -235,7 +237,7 @@ static void large_read_test(size_t slice_size) {
       grpc_resource_quota_create("large_read_test");
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "large_read_test"), resource_quota,
                        slice_size, "test");
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   grpc_endpoint_add_to_pollset(&exec_ctx, ep, g_pollset);
 
   written_bytes = fill_socket(sv[0]);
@@ -245,7 +247,7 @@ static void large_read_test(size_t slice_size) {
   state.read_bytes = 0;
   state.target_read_bytes = (size_t)written_bytes;
   grpc_slice_buffer_init(&state.incoming);
-  grpc_closure_init(&state.read_cb, read_cb, &state);
+  grpc_closure_init(&state.read_cb, read_cb, &state, grpc_schedule_on_exec_ctx);
 
   grpc_endpoint_read(&exec_ctx, ep, &state.incoming, &state.read_cb);
 
@@ -263,7 +265,7 @@ static void large_read_test(size_t slice_size) {
   GPR_ASSERT(state.read_bytes == state.target_read_bytes);
   gpr_mu_unlock(g_mu);
 
-  grpc_slice_buffer_destroy(&state.incoming);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &state.incoming);
   grpc_endpoint_destroy(&exec_ctx, ep);
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -374,7 +376,7 @@ static void write_test(size_t num_bytes, size_t slice_size) {
       grpc_resource_quota_create("write_test");
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "write_test"), resource_quota,
                        GRPC_TCP_DEFAULT_READ_SLICE_SIZE, "test");
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   grpc_endpoint_add_to_pollset(&exec_ctx, ep, g_pollset);
 
   state.ep = ep;
@@ -384,7 +386,8 @@ static void write_test(size_t num_bytes, size_t slice_size) {
 
   grpc_slice_buffer_init(&outgoing);
   grpc_slice_buffer_addn(&outgoing, slices, num_blocks);
-  grpc_closure_init(&write_done_closure, write_done, &state);
+  grpc_closure_init(&write_done_closure, write_done, &state,
+                    grpc_schedule_on_exec_ctx);
 
   grpc_endpoint_write(&exec_ctx, ep, &outgoing, &write_done_closure);
   drain_socket_blocking(sv[0], num_bytes, num_bytes);
@@ -404,7 +407,7 @@ static void write_test(size_t num_bytes, size_t slice_size) {
   }
   gpr_mu_unlock(g_mu);
 
-  grpc_slice_buffer_destroy(&outgoing);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &outgoing);
   grpc_endpoint_destroy(&exec_ctx, ep);
   gpr_free(slices);
   grpc_exec_ctx_finish(&exec_ctx);
@@ -429,7 +432,8 @@ static void release_fd_test(size_t num_bytes, size_t slice_size) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_closure fd_released_cb;
   int fd_released_done = 0;
-  grpc_closure_init(&fd_released_cb, &on_fd_released, &fd_released_done);
+  grpc_closure_init(&fd_released_cb, &on_fd_released, &fd_released_done,
+                    grpc_schedule_on_exec_ctx);
 
   gpr_log(GPR_INFO,
           "Release fd read_test of size %" PRIuPTR ", slice size %" PRIuPTR,
@@ -442,7 +446,7 @@ static void release_fd_test(size_t num_bytes, size_t slice_size) {
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "read_test"), resource_quota,
                        slice_size, "test");
   GPR_ASSERT(grpc_tcp_fd(ep) == sv[1] && sv[1] >= 0);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   grpc_endpoint_add_to_pollset(&exec_ctx, ep, g_pollset);
 
   written_bytes = fill_socket_partial(sv[0], num_bytes);
@@ -452,7 +456,7 @@ static void release_fd_test(size_t num_bytes, size_t slice_size) {
   state.read_bytes = 0;
   state.target_read_bytes = written_bytes;
   grpc_slice_buffer_init(&state.incoming);
-  grpc_closure_init(&state.read_cb, read_cb, &state);
+  grpc_closure_init(&state.read_cb, read_cb, &state, grpc_schedule_on_exec_ctx);
 
   grpc_endpoint_read(&exec_ctx, ep, &state.incoming, &state.read_cb);
 
@@ -472,7 +476,7 @@ static void release_fd_test(size_t num_bytes, size_t slice_size) {
   GPR_ASSERT(state.read_bytes == state.target_read_bytes);
   gpr_mu_unlock(g_mu);
 
-  grpc_slice_buffer_destroy(&state.incoming);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &state.incoming);
   grpc_tcp_destroy_and_release_fd(&exec_ctx, ep, &fd, &fd_released_cb);
   grpc_exec_ctx_flush(&exec_ctx);
   gpr_mu_lock(g_mu);
@@ -534,7 +538,7 @@ static grpc_endpoint_test_fixture create_fixture_tcp_socketpair(
                                 resource_quota, slice_size, "test");
   f.server_ep = grpc_tcp_create(grpc_fd_create(sv[1], "fixture:server"),
                                 resource_quota, slice_size, "test");
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   grpc_endpoint_add_to_pollset(&exec_ctx, f.client_ep, g_pollset);
   grpc_endpoint_add_to_pollset(&exec_ctx, f.server_ep, g_pollset);
 
@@ -561,7 +565,8 @@ int main(int argc, char **argv) {
   grpc_pollset_init(g_pollset, &g_mu);
   grpc_endpoint_tests(configs[0], g_pollset, g_mu);
   run_tests();
-  grpc_closure_init(&destroyed, destroy_pollset, g_pollset);
+  grpc_closure_init(&destroyed, destroy_pollset, g_pollset,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
   grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
diff --git a/test/core/iomgr/tcp_server_posix_test.c b/test/core/iomgr/tcp_server_posix_test.c
index 9a7810e22762774659074172c1a606e3ae37796c..020f0059802e371e4d1fa7714e674609dcbd7740 100644
--- a/test/core/iomgr/tcp_server_posix_test.c
+++ b/test/core/iomgr/tcp_server_posix_test.c
@@ -104,7 +104,7 @@ static void server_weak_ref_shutdown(grpc_exec_ctx *exec_ctx, void *arg,
 static void server_weak_ref_init(server_weak_ref *weak_ref) {
   weak_ref->server = NULL;
   grpc_closure_init(&weak_ref->server_shutdown, server_weak_ref_shutdown,
-                    weak_ref);
+                    weak_ref, grpc_schedule_on_exec_ctx);
 }
 
 /* Make weak_ref->server_shutdown a shutdown_starting cb on server.
@@ -366,7 +366,8 @@ int main(int argc, char **argv) {
   test_connect(1);
   test_connect(10);
 
-  grpc_closure_init(&destroyed, destroy_pollset, g_pollset);
+  grpc_closure_init(&destroyed, destroy_pollset, g_pollset,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
   grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
diff --git a/test/core/iomgr/timer_list_test.c b/test/core/iomgr/timer_list_test.c
index be8988ab752f2ee940e7517d6676e3464e18ec60..8d7ac3fdaa1be1548e61be90faf291ec159f4e8f 100644
--- a/test/core/iomgr/timer_list_test.c
+++ b/test/core/iomgr/timer_list_test.c
@@ -57,17 +57,20 @@ static void add_test(void) {
 
   /* 10 ms timers.  will expire in the current epoch */
   for (i = 0; i < 10; i++) {
-    grpc_timer_init(&exec_ctx, &timers[i],
-                    gpr_time_add(start, gpr_time_from_millis(10, GPR_TIMESPAN)),
-                    cb, (void *)(intptr_t)i, start);
+    grpc_timer_init(
+        &exec_ctx, &timers[i],
+        gpr_time_add(start, gpr_time_from_millis(10, GPR_TIMESPAN)),
+        grpc_closure_create(cb, (void *)(intptr_t)i, grpc_schedule_on_exec_ctx),
+        start);
   }
 
   /* 1010 ms timers.  will expire in the next epoch */
   for (i = 10; i < 20; i++) {
     grpc_timer_init(
         &exec_ctx, &timers[i],
-        gpr_time_add(start, gpr_time_from_millis(1010, GPR_TIMESPAN)), cb,
-        (void *)(intptr_t)i, start);
+        gpr_time_add(start, gpr_time_from_millis(1010, GPR_TIMESPAN)),
+        grpc_closure_create(cb, (void *)(intptr_t)i, grpc_schedule_on_exec_ctx),
+        start);
   }
 
   /* collect timers.  Only the first batch should be ready. */
@@ -125,16 +128,26 @@ void destruction_test(void) {
   grpc_timer_list_init(gpr_time_0(GPR_CLOCK_REALTIME));
   memset(cb_called, 0, sizeof(cb_called));
 
-  grpc_timer_init(&exec_ctx, &timers[0], tfm(100), cb, (void *)(intptr_t)0,
-                  gpr_time_0(GPR_CLOCK_REALTIME));
-  grpc_timer_init(&exec_ctx, &timers[1], tfm(3), cb, (void *)(intptr_t)1,
-                  gpr_time_0(GPR_CLOCK_REALTIME));
-  grpc_timer_init(&exec_ctx, &timers[2], tfm(100), cb, (void *)(intptr_t)2,
-                  gpr_time_0(GPR_CLOCK_REALTIME));
-  grpc_timer_init(&exec_ctx, &timers[3], tfm(3), cb, (void *)(intptr_t)3,
-                  gpr_time_0(GPR_CLOCK_REALTIME));
-  grpc_timer_init(&exec_ctx, &timers[4], tfm(1), cb, (void *)(intptr_t)4,
-                  gpr_time_0(GPR_CLOCK_REALTIME));
+  grpc_timer_init(
+      &exec_ctx, &timers[0], tfm(100),
+      grpc_closure_create(cb, (void *)(intptr_t)0, grpc_schedule_on_exec_ctx),
+      gpr_time_0(GPR_CLOCK_REALTIME));
+  grpc_timer_init(
+      &exec_ctx, &timers[1], tfm(3),
+      grpc_closure_create(cb, (void *)(intptr_t)1, grpc_schedule_on_exec_ctx),
+      gpr_time_0(GPR_CLOCK_REALTIME));
+  grpc_timer_init(
+      &exec_ctx, &timers[2], tfm(100),
+      grpc_closure_create(cb, (void *)(intptr_t)2, grpc_schedule_on_exec_ctx),
+      gpr_time_0(GPR_CLOCK_REALTIME));
+  grpc_timer_init(
+      &exec_ctx, &timers[3], tfm(3),
+      grpc_closure_create(cb, (void *)(intptr_t)3, grpc_schedule_on_exec_ctx),
+      gpr_time_0(GPR_CLOCK_REALTIME));
+  grpc_timer_init(
+      &exec_ctx, &timers[4], tfm(1),
+      grpc_closure_create(cb, (void *)(intptr_t)4, grpc_schedule_on_exec_ctx),
+      gpr_time_0(GPR_CLOCK_REALTIME));
   GPR_ASSERT(1 == grpc_timer_check(&exec_ctx, tfm(2), NULL));
   grpc_exec_ctx_finish(&exec_ctx);
   GPR_ASSERT(1 == cb_called[4][1]);
diff --git a/test/core/iomgr/udp_server_test.c b/test/core/iomgr/udp_server_test.c
index 9bea229466820402b5a9eebf4f6e3ef9666a9435..e1210401c816ec83dfc9a0f94fa41576910b682d 100644
--- a/test/core/iomgr/udp_server_test.c
+++ b/test/core/iomgr/udp_server_test.c
@@ -234,11 +234,12 @@ int main(int argc, char **argv) {
   test_receive(1);
   test_receive(10);
 
-  grpc_closure_init(&destroyed, destroy_pollset, g_pollset);
+  grpc_closure_init(&destroyed, destroy_pollset, g_pollset,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
   grpc_exec_ctx_finish(&exec_ctx);
   gpr_free(g_pollset);
-  grpc_iomgr_shutdown();
+  grpc_shutdown();
   return 0;
 }
 
diff --git a/test/core/json/BUILD b/test/core/json/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..05d4c6e0c5e9744a8a92dc2627a6777542bb1431
--- /dev/null
+++ b/test/core/json/BUILD
@@ -0,0 +1,41 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+grpc_fuzzer(
+  name = "json_fuzzer",
+  srcs = ["fuzzer.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "corpus",
+  copts = ["-std=c99"],
+)
+
diff --git a/test/core/memory_usage/client.c b/test/core/memory_usage/client.c
new file mode 100644
index 0000000000000000000000000000000000000000..f4432bf5727147d10c463720cf20059394733bc1
--- /dev/null
+++ b/test/core/memory_usage/client.c
@@ -0,0 +1,316 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/grpc.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/cmdline.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "src/core/lib/support/string.h"
+#include "test/core/util/memory_counters.h"
+#include "test/core/util/test_config.h"
+
+static grpc_channel *channel;
+static grpc_completion_queue *cq;
+static grpc_op metadata_ops[2];
+static grpc_op status_ops[2];
+static grpc_op snapshot_ops[6];
+static grpc_op *op;
+
+typedef struct {
+  grpc_call *call;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_status_code status;
+  char *details;
+  size_t details_capacity;
+  grpc_metadata_array trailing_metadata_recv;
+} fling_call;
+
+// Statically allocate call data structs. Enough to accomodate 10000 ping-pong
+// calls and 1 extra for the snapshot calls.
+static fling_call calls[10001];
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+// A call is intentionally divided into two steps. First step is to initiate a
+// call (i.e send and recv metadata). A call is outstanding after we initated,
+// so we can measure the call memory usage.
+static void init_ping_pong_request(int call_idx) {
+  grpc_metadata_array_init(&calls[call_idx].initial_metadata_recv);
+
+  memset(metadata_ops, 0, sizeof(metadata_ops));
+  op = metadata_ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = GRPC_INITIAL_METADATA_WAIT_FOR_READY;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &calls[call_idx].initial_metadata_recv;
+  op++;
+
+  calls[call_idx].call = grpc_channel_create_call(
+      channel, NULL, GRPC_PROPAGATE_DEFAULTS, cq, "/Reflector/reflectUnary",
+      "localhost", gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(calls[call_idx].call,
+                                                   metadata_ops,
+                                                   (size_t)(op - metadata_ops),
+                                                   tag(call_idx), NULL));
+  grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+}
+
+// Second step is to finish the call (i.e recv status) and destroy the call.
+static void finish_ping_pong_request(int call_idx) {
+  grpc_metadata_array_init(&calls[call_idx].trailing_metadata_recv);
+
+  memset(status_ops, 0, sizeof(status_ops));
+  op = status_ops;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata =
+      &calls[call_idx].trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &calls[call_idx].status;
+  op->data.recv_status_on_client.status_details = &calls[call_idx].details;
+  op->data.recv_status_on_client.status_details_capacity =
+      &calls[call_idx].details_capacity;
+  op++;
+
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(calls[call_idx].call,
+                                                   status_ops,
+                                                   (size_t)(op - status_ops),
+                                                   tag(call_idx), NULL));
+  grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+  grpc_metadata_array_destroy(&calls[call_idx].initial_metadata_recv);
+  grpc_metadata_array_destroy(&calls[call_idx].trailing_metadata_recv);
+  gpr_free(calls[call_idx].details);
+  grpc_call_destroy(calls[call_idx].call);
+  calls[call_idx].call = NULL;
+}
+
+static struct grpc_memory_counters send_snapshot_request(
+    int call_idx, const char *call_type) {
+  grpc_metadata_array_init(&calls[call_idx].initial_metadata_recv);
+  grpc_metadata_array_init(&calls[call_idx].trailing_metadata_recv);
+
+  grpc_byte_buffer *response_payload_recv = NULL;
+  memset(snapshot_ops, 0, sizeof(snapshot_ops));
+  op = snapshot_ops;
+
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = GRPC_INITIAL_METADATA_WAIT_FOR_READY;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &calls[call_idx].initial_metadata_recv;
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &response_payload_recv;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata =
+      &calls[call_idx].trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &calls[call_idx].status;
+  op->data.recv_status_on_client.status_details = &calls[call_idx].details;
+  op->data.recv_status_on_client.status_details_capacity =
+      &calls[call_idx].details_capacity;
+  op++;
+
+  calls[call_idx].call = grpc_channel_create_call(
+      channel, NULL, GRPC_PROPAGATE_DEFAULTS, cq, call_type, "localhost",
+      gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(
+                                 calls[call_idx].call, snapshot_ops,
+                                 (size_t)(op - snapshot_ops), (void *)0, NULL));
+  grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+
+  grpc_byte_buffer_reader reader;
+  grpc_byte_buffer_reader_init(&reader, response_payload_recv);
+  grpc_slice response = grpc_byte_buffer_reader_readall(&reader);
+
+  struct grpc_memory_counters snapshot;
+  snapshot.total_size_absolute =
+      ((struct grpc_memory_counters *)GRPC_SLICE_START_PTR(response))
+          ->total_size_absolute;
+  snapshot.total_allocs_absolute =
+      ((struct grpc_memory_counters *)GRPC_SLICE_START_PTR(response))
+          ->total_allocs_absolute;
+  snapshot.total_size_relative =
+      ((struct grpc_memory_counters *)GRPC_SLICE_START_PTR(response))
+          ->total_size_relative;
+  snapshot.total_allocs_relative =
+      ((struct grpc_memory_counters *)GRPC_SLICE_START_PTR(response))
+          ->total_allocs_relative;
+
+  grpc_metadata_array_destroy(&calls[call_idx].initial_metadata_recv);
+  grpc_metadata_array_destroy(&calls[call_idx].trailing_metadata_recv);
+  grpc_slice_unref(response);
+  grpc_byte_buffer_reader_destroy(&reader);
+  grpc_byte_buffer_destroy(response_payload_recv);
+  gpr_free(calls[call_idx].details);
+  calls[call_idx].details = NULL;
+  calls[call_idx].details_capacity = 0;
+  grpc_call_destroy(calls[call_idx].call);
+  calls[call_idx].call = NULL;
+
+  return snapshot;
+}
+
+int main(int argc, char **argv) {
+  grpc_memory_counters_init();
+  grpc_slice slice = grpc_slice_from_copied_string("x");
+  char *fake_argv[1];
+
+  char *target = "localhost:443";
+  gpr_cmdline *cl;
+  grpc_event event;
+
+  grpc_init();
+
+  GPR_ASSERT(argc >= 1);
+  fake_argv[0] = argv[0];
+  grpc_test_init(1, fake_argv);
+
+  int warmup_iterations = 100;
+  int benchmark_iterations = 1000;
+
+  cl = gpr_cmdline_create("memory profiling client");
+  gpr_cmdline_add_string(cl, "target", "Target host:port", &target);
+  gpr_cmdline_add_int(cl, "warmup", "Warmup iterations", &warmup_iterations);
+  gpr_cmdline_add_int(cl, "benchmark", "Benchmark iterations",
+                      &benchmark_iterations);
+  gpr_cmdline_parse(cl, argc, argv);
+  gpr_cmdline_destroy(cl);
+
+  for (int k = 0; k < (int)(sizeof(calls) / sizeof(fling_call)); k++) {
+    calls[k].details = NULL;
+    calls[k].details_capacity = 0;
+  }
+
+  cq = grpc_completion_queue_create(NULL);
+
+  struct grpc_memory_counters client_channel_start =
+      grpc_memory_counters_snapshot();
+  channel = grpc_insecure_channel_create(target, NULL, NULL);
+
+  int call_idx = 0;
+
+  struct grpc_memory_counters before_server_create =
+      send_snapshot_request(0, "Reflector/GetBeforeSvrCreation");
+  struct grpc_memory_counters after_server_create =
+      send_snapshot_request(0, "Reflector/GetAfterSvrCreation");
+
+  // warmup period
+  for (call_idx = 0; call_idx < warmup_iterations; ++call_idx) {
+    init_ping_pong_request(call_idx + 1);
+  }
+
+  struct grpc_memory_counters server_benchmark_calls_start =
+      send_snapshot_request(0, "Reflector/SimpleSnapshot");
+
+  struct grpc_memory_counters client_benchmark_calls_start =
+      grpc_memory_counters_snapshot();
+
+  // benchmark period
+  for (; call_idx < warmup_iterations + benchmark_iterations; ++call_idx) {
+    init_ping_pong_request(call_idx + 1);
+  }
+
+  struct grpc_memory_counters client_calls_inflight =
+      grpc_memory_counters_snapshot();
+
+  struct grpc_memory_counters server_calls_inflight =
+      send_snapshot_request(0, "Reflector/DestroyCalls");
+
+  do {
+    event = grpc_completion_queue_next(
+        cq, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                         gpr_time_from_micros(10000, GPR_TIMESPAN)),
+        NULL);
+  } while (event.type != GRPC_QUEUE_TIMEOUT);
+
+  // second step - recv status and destroy call
+  for (call_idx = 0; call_idx < warmup_iterations + benchmark_iterations;
+       ++call_idx) {
+    finish_ping_pong_request(call_idx + 1);
+  }
+
+  struct grpc_memory_counters server_calls_end =
+      send_snapshot_request(0, "Reflector/SimpleSnapshot");
+
+  struct grpc_memory_counters client_channel_end =
+      grpc_memory_counters_snapshot();
+
+  grpc_channel_destroy(channel);
+  grpc_completion_queue_shutdown(cq);
+
+  do {
+    event = grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME),
+                                       NULL);
+  } while (event.type != GRPC_QUEUE_SHUTDOWN);
+  grpc_slice_unref(slice);
+
+  grpc_completion_queue_destroy(cq);
+  grpc_shutdown();
+
+  gpr_log(GPR_INFO, "---------client stats--------");
+  gpr_log(GPR_INFO, "client call memory usage: %f bytes per call",
+          (double)(client_calls_inflight.total_size_relative -
+                   client_benchmark_calls_start.total_size_relative) /
+              benchmark_iterations);
+  gpr_log(GPR_INFO, "client channel memory usage %zi bytes",
+          client_channel_end.total_size_relative -
+              client_channel_start.total_size_relative);
+
+  gpr_log(GPR_INFO, "---------server stats--------");
+  gpr_log(GPR_INFO, "server create: %zi bytes",
+          after_server_create.total_size_relative -
+              before_server_create.total_size_relative);
+  gpr_log(GPR_INFO, "server call memory usage: %f bytes per call",
+          (double)(server_calls_inflight.total_size_relative -
+                   server_benchmark_calls_start.total_size_relative) /
+              benchmark_iterations);
+  gpr_log(GPR_INFO, "server channel memory usage %zi bytes",
+          server_calls_end.total_size_relative -
+              after_server_create.total_size_relative);
+
+  grpc_memory_counters_destroy();
+  return 0;
+}
diff --git a/test/core/memory_usage/memory_usage_test.c b/test/core/memory_usage/memory_usage_test.c
new file mode 100644
index 0000000000000000000000000000000000000000..7e7a9d050da2f010d91e9848dd34205fdc04b250
--- /dev/null
+++ b/test/core/memory_usage/memory_usage_test.c
@@ -0,0 +1,93 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/subprocess.h>
+#include "src/core/lib/support/string.h"
+#include "test/core/util/port.h"
+
+int main(int argc, char **argv) {
+  char *me = argv[0];
+  char *lslash = strrchr(me, '/');
+  char root[1024];
+  int port = grpc_pick_unused_port_or_die();
+  char *args[10];
+  int status;
+  gpr_subprocess *svr, *cli;
+  /* figure out where we are */
+  if (lslash) {
+    memcpy(root, me, (size_t)(lslash - me));
+    root[lslash - me] = 0;
+  } else {
+    strcpy(root, ".");
+  }
+  /* start the server */
+  gpr_asprintf(&args[0], "%s/memory_profile_server%s", root,
+               gpr_subprocess_binary_extension());
+  args[1] = "--bind";
+  gpr_join_host_port(&args[2], "::", port);
+  args[3] = "--no-secure";
+  svr = gpr_subprocess_create(4, (const char **)args);
+  gpr_free(args[0]);
+  gpr_free(args[2]);
+
+  /* start the client */
+  gpr_asprintf(&args[0], "%s/memory_profile_client%s", root,
+               gpr_subprocess_binary_extension());
+  args[1] = "--target";
+  gpr_join_host_port(&args[2], "127.0.0.1", port);
+  args[3] = "--warmup=1000";
+  args[4] = "--benchmark=9000";
+  cli = gpr_subprocess_create(5, (const char **)args);
+  gpr_free(args[0]);
+  gpr_free(args[2]);
+
+  /* wait for completion */
+  printf("waiting for client\n");
+  if ((status = gpr_subprocess_join(cli))) {
+    gpr_subprocess_destroy(cli);
+    gpr_subprocess_destroy(svr);
+    return status;
+  }
+  gpr_subprocess_destroy(cli);
+
+  gpr_subprocess_interrupt(svr);
+  status = gpr_subprocess_join(svr);
+  gpr_subprocess_destroy(svr);
+  return status;
+}
diff --git a/test/core/memory_usage/server.c b/test/core/memory_usage/server.c
new file mode 100644
index 0000000000000000000000000000000000000000..c0710930b07b3eb90593958f923be82c4de95546
--- /dev/null
+++ b/test/core/memory_usage/server.c
@@ -0,0 +1,321 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_security.h>
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#ifndef _WIN32
+/* This is for _exit() below, which is temporary. */
+#include <unistd.h>
+#endif
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/cmdline.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include "test/core/end2end/data/ssl_test_data.h"
+#include "test/core/util/memory_counters.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+static grpc_completion_queue *cq;
+static grpc_server *server;
+static grpc_op metadata_ops[2];
+static grpc_op snapshot_ops[5];
+static grpc_op status_op;
+static int got_sigint = 0;
+static grpc_byte_buffer *payload_buffer = NULL;
+static grpc_byte_buffer *terminal_buffer = NULL;
+static int was_cancelled = 2;
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+typedef enum {
+  FLING_SERVER_NEW_REQUEST = 1,
+  FLING_SERVER_SEND_INIT_METADATA,
+  FLING_SERVER_WAIT_FOR_DESTROY,
+  FLING_SERVER_SEND_STATUS_FLING_CALL,
+  FLING_SERVER_SEND_STATUS_SNAPSHOT,
+  FLING_SERVER_BATCH_SEND_STATUS_FLING_CALL
+} fling_server_tags;
+
+typedef struct {
+  fling_server_tags state;
+  grpc_call *call;
+  grpc_call_details call_details;
+  grpc_metadata_array request_metadata_recv;
+  grpc_metadata_array initial_metadata_send;
+} fling_call;
+
+// hold up to 10000 calls and 6 snaphost calls
+static fling_call calls[100006];
+
+static void request_call_unary(int call_idx) {
+  if (call_idx == (int)(sizeof(calls) / sizeof(fling_call))) {
+    gpr_log(GPR_INFO, "Used all call slots (10000) on server. Server exit.");
+    _exit(0);
+  }
+  grpc_metadata_array_init(&calls[call_idx].request_metadata_recv);
+  grpc_server_request_call(
+      server, &calls[call_idx].call, &calls[call_idx].call_details,
+      &calls[call_idx].request_metadata_recv, cq, cq, &calls[call_idx]);
+}
+
+static void send_initial_metadata_unary(void *tag) {
+  grpc_metadata_array_init(&(*(fling_call *)tag).initial_metadata_send);
+  metadata_ops[0].op = GRPC_OP_SEND_INITIAL_METADATA;
+  metadata_ops[0].data.send_initial_metadata.count = 0;
+
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch((*(fling_call *)tag).call,
+                                                   metadata_ops, 1, tag, NULL));
+}
+
+static void send_status(void *tag) {
+  status_op.op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  status_op.data.send_status_from_server.status = GRPC_STATUS_OK;
+  status_op.data.send_status_from_server.trailing_metadata_count = 0;
+  status_op.data.send_status_from_server.status_details = "";
+
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch((*(fling_call *)tag).call,
+                                                   &status_op, 1, tag, NULL));
+}
+
+static void send_snapshot(void *tag, struct grpc_memory_counters *snapshot) {
+  grpc_op *op;
+
+  grpc_slice snapshot_slice =
+      grpc_slice_new(snapshot, sizeof(*snapshot), gpr_free);
+  payload_buffer = grpc_raw_byte_buffer_create(&snapshot_slice, 1);
+  grpc_metadata_array_init(&(*(fling_call *)tag).initial_metadata_send);
+
+  op = snapshot_ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &terminal_buffer;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  if (payload_buffer == NULL) {
+    gpr_log(GPR_INFO, "NULL payload buffer !!!");
+  }
+  op->data.send_message = payload_buffer;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.status = GRPC_STATUS_OK;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status_details = "";
+  op++;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op++;
+
+  GPR_ASSERT(GRPC_CALL_OK ==
+             grpc_call_start_batch((*(fling_call *)tag).call, snapshot_ops,
+                                   (size_t)(op - snapshot_ops), tag, NULL));
+}
+/* We have some sort of deadlock, so let's not exit gracefully for now.
+   When that is resolved, please remove the #include <unistd.h> above. */
+static void sigint_handler(int x) { _exit(0); }
+
+int main(int argc, char **argv) {
+  grpc_memory_counters_init();
+  grpc_event ev;
+  char *addr_buf = NULL;
+  gpr_cmdline *cl;
+  int shutdown_started = 0;
+  int shutdown_finished = 0;
+
+  int secure = 0;
+  char *addr = NULL;
+
+  char *fake_argv[1];
+
+  GPR_ASSERT(argc >= 1);
+  fake_argv[0] = argv[0];
+  grpc_test_init(1, fake_argv);
+
+  grpc_init();
+  srand((unsigned)clock());
+
+  cl = gpr_cmdline_create("fling server");
+  gpr_cmdline_add_string(cl, "bind", "Bind host:port", &addr);
+  gpr_cmdline_add_flag(cl, "secure", "Run with security?", &secure);
+  gpr_cmdline_parse(cl, argc, argv);
+  gpr_cmdline_destroy(cl);
+
+  if (addr == NULL) {
+    gpr_join_host_port(&addr_buf, "::", grpc_pick_unused_port_or_die());
+    addr = addr_buf;
+  }
+  gpr_log(GPR_INFO, "creating server on: %s", addr);
+
+  cq = grpc_completion_queue_create(NULL);
+
+  struct grpc_memory_counters before_server_create =
+      grpc_memory_counters_snapshot();
+  if (secure) {
+    grpc_ssl_pem_key_cert_pair pem_key_cert_pair = {test_server1_key,
+                                                    test_server1_cert};
+    grpc_server_credentials *ssl_creds = grpc_ssl_server_credentials_create(
+        NULL, &pem_key_cert_pair, 1, 0, NULL);
+    server = grpc_server_create(NULL, NULL);
+    GPR_ASSERT(grpc_server_add_secure_http2_port(server, addr, ssl_creds));
+    grpc_server_credentials_release(ssl_creds);
+  } else {
+    server = grpc_server_create(NULL, NULL);
+    GPR_ASSERT(grpc_server_add_insecure_http2_port(server, addr));
+  }
+
+  grpc_server_register_completion_queue(server, cq, NULL);
+  grpc_server_start(server);
+
+  struct grpc_memory_counters after_server_create =
+      grpc_memory_counters_snapshot();
+
+  gpr_free(addr_buf);
+  addr = addr_buf = NULL;
+
+  // initialize call instances
+  for (int i = 0; i < (int)(sizeof(calls) / sizeof(fling_call)); i++) {
+    grpc_call_details_init(&calls[i].call_details);
+    calls[i].state = FLING_SERVER_NEW_REQUEST;
+  }
+
+  int next_call_idx = 0;
+  struct grpc_memory_counters current_snapshot;
+
+  request_call_unary(next_call_idx);
+
+  signal(SIGINT, sigint_handler);
+
+  while (!shutdown_finished) {
+    if (got_sigint && !shutdown_started) {
+      gpr_log(GPR_INFO, "Shutting down due to SIGINT");
+      grpc_server_shutdown_and_notify(server, cq, tag(1000));
+      GPR_ASSERT(grpc_completion_queue_pluck(
+                     cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                     .type == GRPC_OP_COMPLETE);
+      grpc_completion_queue_shutdown(cq);
+      shutdown_started = 1;
+    }
+    ev = grpc_completion_queue_next(
+        cq, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                         gpr_time_from_micros(1000000, GPR_TIMESPAN)),
+        NULL);
+    fling_call *s = ev.tag;
+    switch (ev.type) {
+      case GRPC_OP_COMPLETE:
+        switch (s->state) {
+          case FLING_SERVER_NEW_REQUEST:
+            request_call_unary(++next_call_idx);
+            if (0 ==
+                strcmp(s->call_details.method, "/Reflector/reflectUnary")) {
+              s->state = FLING_SERVER_SEND_INIT_METADATA;
+              send_initial_metadata_unary(s);
+            } else if (0 == strcmp(s->call_details.method,
+                                   "Reflector/GetBeforeSvrCreation")) {
+              s->state = FLING_SERVER_SEND_STATUS_SNAPSHOT;
+              send_snapshot(s, &before_server_create);
+            } else if (0 == strcmp(s->call_details.method,
+                                   "Reflector/GetAfterSvrCreation")) {
+              s->state = FLING_SERVER_SEND_STATUS_SNAPSHOT;
+              send_snapshot(s, &after_server_create);
+            } else if (0 == strcmp(s->call_details.method,
+                                   "Reflector/SimpleSnapshot")) {
+              s->state = FLING_SERVER_SEND_STATUS_SNAPSHOT;
+              current_snapshot = grpc_memory_counters_snapshot();
+              send_snapshot(s, &current_snapshot);
+            } else if (0 == strcmp(s->call_details.method,
+                                   "Reflector/DestroyCalls")) {
+              s->state = FLING_SERVER_BATCH_SEND_STATUS_FLING_CALL;
+              current_snapshot = grpc_memory_counters_snapshot();
+              send_snapshot(s, &current_snapshot);
+            } else {
+              gpr_log(GPR_ERROR, "Wrong call method");
+            }
+            break;
+          case FLING_SERVER_SEND_INIT_METADATA:
+            s->state = FLING_SERVER_WAIT_FOR_DESTROY;
+            break;
+          case FLING_SERVER_WAIT_FOR_DESTROY:
+            break;
+          case FLING_SERVER_SEND_STATUS_FLING_CALL:
+            grpc_call_destroy(s->call);
+            grpc_call_details_destroy(&s->call_details);
+            grpc_metadata_array_destroy(&s->initial_metadata_send);
+            grpc_metadata_array_destroy(&s->request_metadata_recv);
+            break;
+          case FLING_SERVER_BATCH_SEND_STATUS_FLING_CALL:
+            for (int k = 0; k < (int)(sizeof(calls) / sizeof(fling_call));
+                 ++k) {
+              if (calls[k].state == FLING_SERVER_WAIT_FOR_DESTROY) {
+                calls[k].state = FLING_SERVER_SEND_STATUS_FLING_CALL;
+                send_status(&calls[k]);
+              }
+            }
+          // no break here since we want to continue to case
+          // FLING_SERVER_SEND_STATUS_SNAPSHOT to destroy the snapshot call
+          case FLING_SERVER_SEND_STATUS_SNAPSHOT:
+            grpc_byte_buffer_destroy(payload_buffer);
+            grpc_byte_buffer_destroy(terminal_buffer);
+            grpc_call_destroy(s->call);
+            grpc_call_details_destroy(&s->call_details);
+            grpc_metadata_array_destroy(&s->initial_metadata_send);
+            grpc_metadata_array_destroy(&s->request_metadata_recv);
+            terminal_buffer = NULL;
+            payload_buffer = NULL;
+            break;
+        }
+        break;
+      case GRPC_QUEUE_SHUTDOWN:
+        GPR_ASSERT(shutdown_started);
+        shutdown_finished = 1;
+        break;
+      case GRPC_QUEUE_TIMEOUT:
+        break;
+    }
+  }
+
+  grpc_server_destroy(server);
+  grpc_completion_queue_destroy(cq);
+  grpc_shutdown();
+  grpc_memory_counters_destroy();
+  return 0;
+}
diff --git a/test/core/nanopb/BUILD b/test/core/nanopb/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..b02d750f3257ceb648cf3c8aa0c5590165e3e377
--- /dev/null
+++ b/test/core/nanopb/BUILD
@@ -0,0 +1,49 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+grpc_fuzzer(
+  name = "fuzzer_response",
+  srcs = ["fuzzer_response.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "corpus_response",
+  copts = ["-std=c99"],
+)
+
+grpc_fuzzer(
+  name = "fuzzer_serverlist",
+  srcs = ["fuzzer_serverlist.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "corpus_serverlist",
+  copts = ["-std=c99"],
+)
+
diff --git a/test/core/security/b64_test.c b/test/core/security/b64_test.c
index af883f51e9e7a3bc288339eafcf6320c5e4e48ea..28af48075ebf51b13bd553455865ded94c48c172 100644
--- a/test/core/security/b64_test.c
+++ b/test/core/security/b64_test.c
@@ -38,6 +38,8 @@
 #include <grpc/slice.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/test_config.h"
 
 static int buffers_are_equal(const unsigned char *buf1,
@@ -57,12 +59,14 @@ static void test_simple_encode_decode_b64(int url_safe, int multiline) {
   const char *hello = "hello";
   char *hello_b64 =
       grpc_base64_encode(hello, strlen(hello), url_safe, multiline);
-  grpc_slice hello_slice = grpc_base64_decode(hello_b64, url_safe);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_slice hello_slice = grpc_base64_decode(&exec_ctx, hello_b64, url_safe);
   GPR_ASSERT(GRPC_SLICE_LENGTH(hello_slice) == strlen(hello));
   GPR_ASSERT(strncmp((const char *)GRPC_SLICE_START_PTR(hello_slice), hello,
                      GRPC_SLICE_LENGTH(hello_slice)) == 0);
 
-  grpc_slice_unref(hello_slice);
+  grpc_slice_unref_internal(&exec_ctx, hello_slice);
+  grpc_exec_ctx_finish(&exec_ctx);
   gpr_free(hello_b64);
 }
 
@@ -75,13 +79,15 @@ static void test_full_range_encode_decode_b64(int url_safe, int multiline) {
 
   /* Try all the different paddings. */
   for (i = 0; i < 3; i++) {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     b64 = grpc_base64_encode(orig, sizeof(orig) - i, url_safe, multiline);
-    orig_decoded = grpc_base64_decode(b64, url_safe);
+    orig_decoded = grpc_base64_decode(&exec_ctx, b64, url_safe);
     GPR_ASSERT(GRPC_SLICE_LENGTH(orig_decoded) == (sizeof(orig) - i));
     GPR_ASSERT(buffers_are_equal(orig, GRPC_SLICE_START_PTR(orig_decoded),
                                  sizeof(orig) - i));
-    grpc_slice_unref(orig_decoded);
+    grpc_slice_unref_internal(&exec_ctx, orig_decoded);
     gpr_free(b64);
+    grpc_exec_ctx_finish(&exec_ctx);
   }
 }
 
@@ -117,7 +123,7 @@ static void test_full_range_encode_decode_b64_urlsafe_multiline(void) {
   test_full_range_encode_decode_b64(1, 1);
 }
 
-static void test_url_safe_unsafe_mismtach_failure(void) {
+static void test_url_safe_unsafe_mismatch_failure(void) {
   unsigned char orig[256];
   size_t i;
   char *b64;
@@ -125,17 +131,19 @@ static void test_url_safe_unsafe_mismtach_failure(void) {
   int url_safe = 1;
   for (i = 0; i < sizeof(orig); i++) orig[i] = (uint8_t)i;
 
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   b64 = grpc_base64_encode(orig, sizeof(orig), url_safe, 0);
-  orig_decoded = grpc_base64_decode(b64, !url_safe);
+  orig_decoded = grpc_base64_decode(&exec_ctx, b64, !url_safe);
   GPR_ASSERT(GRPC_SLICE_IS_EMPTY(orig_decoded));
   gpr_free(b64);
-  grpc_slice_unref(orig_decoded);
+  grpc_slice_unref_internal(&exec_ctx, orig_decoded);
 
   b64 = grpc_base64_encode(orig, sizeof(orig), !url_safe, 0);
-  orig_decoded = grpc_base64_decode(b64, url_safe);
+  orig_decoded = grpc_base64_decode(&exec_ctx, b64, url_safe);
   GPR_ASSERT(GRPC_SLICE_IS_EMPTY(orig_decoded));
   gpr_free(b64);
-  grpc_slice_unref(orig_decoded);
+  grpc_slice_unref_internal(&exec_ctx, orig_decoded);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_rfc4648_test_vectors(void) {
@@ -173,38 +181,40 @@ static void test_rfc4648_test_vectors(void) {
 static void test_unpadded_decode(void) {
   grpc_slice decoded;
 
-  decoded = grpc_base64_decode("Zm9vYmFy", 0);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  decoded = grpc_base64_decode(&exec_ctx, "Zm9vYmFy", 0);
   GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
   GPR_ASSERT(grpc_slice_str_cmp(decoded, "foobar") == 0);
   grpc_slice_unref(decoded);
 
-  decoded = grpc_base64_decode("Zm9vYmE", 0);
+  decoded = grpc_base64_decode(&exec_ctx, "Zm9vYmE", 0);
   GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
   GPR_ASSERT(grpc_slice_str_cmp(decoded, "fooba") == 0);
   grpc_slice_unref(decoded);
 
-  decoded = grpc_base64_decode("Zm9vYg", 0);
+  decoded = grpc_base64_decode(&exec_ctx, "Zm9vYg", 0);
   GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
   GPR_ASSERT(grpc_slice_str_cmp(decoded, "foob") == 0);
   grpc_slice_unref(decoded);
 
-  decoded = grpc_base64_decode("Zm9v", 0);
+  decoded = grpc_base64_decode(&exec_ctx, "Zm9v", 0);
   GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
   GPR_ASSERT(grpc_slice_str_cmp(decoded, "foo") == 0);
   grpc_slice_unref(decoded);
 
-  decoded = grpc_base64_decode("Zm8", 0);
+  decoded = grpc_base64_decode(&exec_ctx, "Zm8", 0);
   GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
   GPR_ASSERT(grpc_slice_str_cmp(decoded, "fo") == 0);
   grpc_slice_unref(decoded);
 
-  decoded = grpc_base64_decode("Zg", 0);
+  decoded = grpc_base64_decode(&exec_ctx, "Zg", 0);
   GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
   GPR_ASSERT(grpc_slice_str_cmp(decoded, "f") == 0);
   grpc_slice_unref(decoded);
 
-  decoded = grpc_base64_decode("", 0);
+  decoded = grpc_base64_decode(&exec_ctx, "", 0);
   GPR_ASSERT(GRPC_SLICE_IS_EMPTY(decoded));
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 int main(int argc, char **argv) {
@@ -217,7 +227,7 @@ int main(int argc, char **argv) {
   test_full_range_encode_decode_b64_multiline();
   test_full_range_encode_decode_b64_urlsafe_no_multiline();
   test_full_range_encode_decode_b64_urlsafe_multiline();
-  test_url_safe_unsafe_mismtach_failure();
+  test_url_safe_unsafe_mismatch_failure();
   test_rfc4648_test_vectors();
   test_unpadded_decode();
   return 0;
diff --git a/test/core/security/create_jwt.c b/test/core/security/create_jwt.c
index 741ace9bdda2fc7d009522e072d514f50c7498cb..ac795f29d225a32a41b1b0a9ed2f2d399f3ae834 100644
--- a/test/core/security/create_jwt.c
+++ b/test/core/security/create_jwt.c
@@ -72,6 +72,7 @@ int main(int argc, char **argv) {
   char *scope = NULL;
   char *json_key_file_path = NULL;
   char *service_url = NULL;
+  grpc_init();
   gpr_cmdline *cl = gpr_cmdline_create("create_jwt");
   gpr_cmdline_add_string(cl, "json_key", "File path of the json key.",
                          &json_key_file_path);
@@ -102,5 +103,6 @@ int main(int argc, char **argv) {
   create_jwt(json_key_file_path, service_url, scope);
 
   gpr_cmdline_destroy(cl);
+  grpc_shutdown();
   return 0;
 }
diff --git a/test/core/security/credentials_test.c b/test/core/security/credentials_test.c
index d4c755088df05bad845b9b0a69739b57b24ce371..0a79292b5b9a840a94823939a32e69bce669f5a3 100644
--- a/test/core/security/credentials_test.c
+++ b/test/core/security/credentials_test.c
@@ -166,24 +166,29 @@ static grpc_httpcli_response http_response(int status, const char *body) {
 /* -- Tests. -- */
 
 static void test_empty_md_store(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *store = grpc_credentials_md_store_create(0);
   GPR_ASSERT(store->num_entries == 0);
   GPR_ASSERT(store->allocated == 0);
-  grpc_credentials_md_store_unref(store);
+  grpc_credentials_md_store_unref(&exec_ctx, store);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_ref_unref_empty_md_store(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *store = grpc_credentials_md_store_create(0);
   grpc_credentials_md_store_ref(store);
   grpc_credentials_md_store_ref(store);
   GPR_ASSERT(store->num_entries == 0);
   GPR_ASSERT(store->allocated == 0);
-  grpc_credentials_md_store_unref(store);
-  grpc_credentials_md_store_unref(store);
-  grpc_credentials_md_store_unref(store);
+  grpc_credentials_md_store_unref(&exec_ctx, store);
+  grpc_credentials_md_store_unref(&exec_ctx, store);
+  grpc_credentials_md_store_unref(&exec_ctx, store);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_add_to_empty_md_store(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *store = grpc_credentials_md_store_create(0);
   const char *key_str = "hello";
   const char *value_str = "there blah blah blah blah blah blah blah";
@@ -195,10 +200,12 @@ static void test_add_to_empty_md_store(void) {
   GPR_ASSERT(grpc_slice_cmp(value, store->entries[0].value) == 0);
   grpc_slice_unref(key);
   grpc_slice_unref(value);
-  grpc_credentials_md_store_unref(store);
+  grpc_credentials_md_store_unref(&exec_ctx, store);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_add_cstrings_to_empty_md_store(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *store = grpc_credentials_md_store_create(0);
   const char *key_str = "hello";
   const char *value_str = "there blah blah blah blah blah blah blah";
@@ -206,18 +213,22 @@ static void test_add_cstrings_to_empty_md_store(void) {
   GPR_ASSERT(store->num_entries == 1);
   GPR_ASSERT(grpc_slice_str_cmp(store->entries[0].key, key_str) == 0);
   GPR_ASSERT(grpc_slice_str_cmp(store->entries[0].value, value_str) == 0);
-  grpc_credentials_md_store_unref(store);
+  grpc_credentials_md_store_unref(&exec_ctx, store);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_empty_preallocated_md_store(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *store = grpc_credentials_md_store_create(4);
   GPR_ASSERT(store->num_entries == 0);
   GPR_ASSERT(store->allocated == 4);
   GPR_ASSERT(store->entries != NULL);
-  grpc_credentials_md_store_unref(store);
+  grpc_credentials_md_store_unref(&exec_ctx, store);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_add_abunch_to_md_store(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *store = grpc_credentials_md_store_create(4);
   size_t num_entries = 1000;
   const char *key_str = "hello";
@@ -230,16 +241,19 @@ static void test_add_abunch_to_md_store(void) {
     GPR_ASSERT(grpc_slice_str_cmp(store->entries[i].key, key_str) == 0);
     GPR_ASSERT(grpc_slice_str_cmp(store->entries[i].value, value_str) == 0);
   }
-  grpc_credentials_md_store_unref(store);
+  grpc_credentials_md_store_unref(&exec_ctx, store);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_oauth2_token_fetcher_creds_parsing_ok(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *token_md = NULL;
   gpr_timespec token_lifetime;
   grpc_httpcli_response response =
       http_response(200, valid_oauth2_json_response);
   GPR_ASSERT(grpc_oauth2_token_fetcher_credentials_parse_server_response(
-                 &response, &token_md, &token_lifetime) == GRPC_CREDENTIALS_OK);
+                 &exec_ctx, &response, &token_md, &token_lifetime) ==
+             GRPC_CREDENTIALS_OK);
   GPR_ASSERT(token_lifetime.tv_sec == 3599);
   GPR_ASSERT(token_lifetime.tv_nsec == 0);
   GPR_ASSERT(token_md->num_entries == 1);
@@ -248,32 +262,38 @@ static void test_oauth2_token_fetcher_creds_parsing_ok(void) {
   GPR_ASSERT(grpc_slice_str_cmp(token_md->entries[0].value,
                                 "Bearer ya29.AHES6ZRN3-HlhAPya30GnW_bHSb_") ==
              0);
-  grpc_credentials_md_store_unref(token_md);
+  grpc_credentials_md_store_unref(&exec_ctx, token_md);
   grpc_http_response_destroy(&response);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_oauth2_token_fetcher_creds_parsing_bad_http_status(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *token_md = NULL;
   gpr_timespec token_lifetime;
   grpc_httpcli_response response =
       http_response(401, valid_oauth2_json_response);
   GPR_ASSERT(grpc_oauth2_token_fetcher_credentials_parse_server_response(
-                 &response, &token_md, &token_lifetime) ==
+                 &exec_ctx, &response, &token_md, &token_lifetime) ==
              GRPC_CREDENTIALS_ERROR);
   grpc_http_response_destroy(&response);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_oauth2_token_fetcher_creds_parsing_empty_http_body(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *token_md = NULL;
   gpr_timespec token_lifetime;
   grpc_httpcli_response response = http_response(200, "");
   GPR_ASSERT(grpc_oauth2_token_fetcher_credentials_parse_server_response(
-                 &response, &token_md, &token_lifetime) ==
+                 &exec_ctx, &response, &token_md, &token_lifetime) ==
              GRPC_CREDENTIALS_ERROR);
   grpc_http_response_destroy(&response);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_oauth2_token_fetcher_creds_parsing_invalid_json(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *token_md = NULL;
   gpr_timespec token_lifetime;
   grpc_httpcli_response response =
@@ -282,12 +302,14 @@ static void test_oauth2_token_fetcher_creds_parsing_invalid_json(void) {
                     " \"expires_in\":3599, "
                     " \"token_type\":\"Bearer\"");
   GPR_ASSERT(grpc_oauth2_token_fetcher_credentials_parse_server_response(
-                 &response, &token_md, &token_lifetime) ==
+                 &exec_ctx, &response, &token_md, &token_lifetime) ==
              GRPC_CREDENTIALS_ERROR);
   grpc_http_response_destroy(&response);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_oauth2_token_fetcher_creds_parsing_missing_token(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *token_md = NULL;
   gpr_timespec token_lifetime;
   grpc_httpcli_response response = http_response(200,
@@ -295,12 +317,14 @@ static void test_oauth2_token_fetcher_creds_parsing_missing_token(void) {
                                                  " \"expires_in\":3599, "
                                                  " \"token_type\":\"Bearer\"}");
   GPR_ASSERT(grpc_oauth2_token_fetcher_credentials_parse_server_response(
-                 &response, &token_md, &token_lifetime) ==
+                 &exec_ctx, &response, &token_md, &token_lifetime) ==
              GRPC_CREDENTIALS_ERROR);
   grpc_http_response_destroy(&response);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_oauth2_token_fetcher_creds_parsing_missing_token_type(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *token_md = NULL;
   gpr_timespec token_lifetime;
   grpc_httpcli_response response =
@@ -309,13 +333,15 @@ static void test_oauth2_token_fetcher_creds_parsing_missing_token_type(void) {
                     " \"expires_in\":3599, "
                     "}");
   GPR_ASSERT(grpc_oauth2_token_fetcher_credentials_parse_server_response(
-                 &response, &token_md, &token_lifetime) ==
+                 &exec_ctx, &response, &token_md, &token_lifetime) ==
              GRPC_CREDENTIALS_ERROR);
   grpc_http_response_destroy(&response);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_oauth2_token_fetcher_creds_parsing_missing_token_lifetime(
     void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_credentials_md_store *token_md = NULL;
   gpr_timespec token_lifetime;
   grpc_httpcli_response response =
@@ -323,9 +349,10 @@ static void test_oauth2_token_fetcher_creds_parsing_missing_token_lifetime(
                     "{\"access_token\":\"ya29.AHES6ZRN3-HlhAPya30GnW_bHSb_\","
                     " \"token_type\":\"Bearer\"}");
   GPR_ASSERT(grpc_oauth2_token_fetcher_credentials_parse_server_response(
-                 &response, &token_md, &token_lifetime) ==
+                 &exec_ctx, &response, &token_md, &token_lifetime) ==
              GRPC_CREDENTIALS_ERROR);
   grpc_http_response_destroy(&response);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void check_metadata(expected_md *expected, grpc_credentials_md *md_elems,
@@ -361,7 +388,7 @@ static void check_google_iam_metadata(grpc_exec_ctx *exec_ctx, void *user_data,
   GPR_ASSERT(error_details == NULL);
   GPR_ASSERT(num_md == 2);
   check_metadata(emd, md_elems, num_md);
-  grpc_call_credentials_unref(c);
+  grpc_call_credentials_unref(exec_ctx, c);
 }
 
 static void test_google_iam_creds(void) {
@@ -385,7 +412,7 @@ static void check_access_token_metadata(
   GPR_ASSERT(error_details == NULL);
   GPR_ASSERT(num_md == 1);
   check_metadata(emd, md_elems, num_md);
-  grpc_call_credentials_unref(c);
+  grpc_call_credentials_unref(exec_ctx, c);
 }
 
 static void test_access_token_creds(void) {
@@ -401,9 +428,10 @@ static void test_access_token_creds(void) {
 }
 
 static grpc_security_status check_channel_oauth2_create_security_connector(
-    grpc_channel_credentials *c, grpc_call_credentials *call_creds,
-    const char *target, const grpc_channel_args *args,
-    grpc_channel_security_connector **sc, grpc_channel_args **new_args) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_credentials *c,
+    grpc_call_credentials *call_creds, const char *target,
+    const grpc_channel_args *args, grpc_channel_security_connector **sc,
+    grpc_channel_args **new_args) {
   GPR_ASSERT(strcmp(c->type, "mock") == 0);
   GPR_ASSERT(call_creds != NULL);
   GPR_ASSERT(strcmp(call_creds->type, GRPC_CALL_CREDENTIALS_TYPE_OAUTH2) == 0);
@@ -411,6 +439,7 @@ static grpc_security_status check_channel_oauth2_create_security_connector(
 }
 
 static void test_channel_oauth2_composite_creds(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_channel_args *new_args;
   grpc_channel_credentials_vtable vtable = {
       NULL, check_channel_oauth2_create_security_connector, NULL};
@@ -424,9 +453,10 @@ static void test_channel_oauth2_composite_creds(void) {
   grpc_channel_credentials_release(channel_creds);
   grpc_call_credentials_release(oauth2_creds);
   GPR_ASSERT(grpc_channel_credentials_create_security_connector(
-                 channel_oauth2_creds, NULL, NULL, NULL, &new_args) ==
-             GRPC_SECURITY_OK);
+                 &exec_ctx, channel_oauth2_creds, NULL, NULL, NULL,
+                 &new_args) == GRPC_SECURITY_OK);
   grpc_channel_credentials_release(channel_oauth2_creds);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void check_oauth2_google_iam_composite_metadata(
@@ -443,7 +473,7 @@ static void check_oauth2_google_iam_composite_metadata(
   GPR_ASSERT(error_details == NULL);
   GPR_ASSERT(num_md == 3);
   check_metadata(emd, md_elems, num_md);
-  grpc_call_credentials_unref(c);
+  grpc_call_credentials_unref(exec_ctx, c);
 }
 
 static void test_oauth2_google_iam_composite_creds(void) {
@@ -459,8 +489,8 @@ static void test_oauth2_google_iam_composite_creds(void) {
   grpc_call_credentials *composite_creds =
       grpc_composite_call_credentials_create(oauth2_creds, google_iam_creds,
                                              NULL);
-  grpc_call_credentials_unref(oauth2_creds);
-  grpc_call_credentials_unref(google_iam_creds);
+  grpc_call_credentials_unref(&exec_ctx, oauth2_creds);
+  grpc_call_credentials_unref(&exec_ctx, google_iam_creds);
   GPR_ASSERT(
       strcmp(composite_creds->type, GRPC_CALL_CREDENTIALS_TYPE_COMPOSITE) == 0);
   creds_array =
@@ -478,9 +508,10 @@ static void test_oauth2_google_iam_composite_creds(void) {
 
 static grpc_security_status
 check_channel_oauth2_google_iam_create_security_connector(
-    grpc_channel_credentials *c, grpc_call_credentials *call_creds,
-    const char *target, const grpc_channel_args *args,
-    grpc_channel_security_connector **sc, grpc_channel_args **new_args) {
+    grpc_exec_ctx *exec_ctx, grpc_channel_credentials *c,
+    grpc_call_credentials *call_creds, const char *target,
+    const grpc_channel_args *args, grpc_channel_security_connector **sc,
+    grpc_channel_args **new_args) {
   const grpc_call_credentials_array *creds_array;
   GPR_ASSERT(strcmp(c->type, "mock") == 0);
   GPR_ASSERT(call_creds != NULL);
@@ -495,6 +526,7 @@ check_channel_oauth2_google_iam_create_security_connector(
 }
 
 static void test_channel_oauth2_google_iam_composite_creds(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_channel_args *new_args;
   grpc_channel_credentials_vtable vtable = {
       NULL, check_channel_oauth2_google_iam_create_security_connector, NULL};
@@ -517,10 +549,11 @@ static void test_channel_oauth2_google_iam_composite_creds(void) {
   grpc_call_credentials_release(google_iam_creds);
 
   GPR_ASSERT(grpc_channel_credentials_create_security_connector(
-                 channel_oauth2_iam_creds, NULL, NULL, NULL, &new_args) ==
-             GRPC_SECURITY_OK);
+                 &exec_ctx, channel_oauth2_iam_creds, NULL, NULL, NULL,
+                 &new_args) == GRPC_SECURITY_OK);
 
   grpc_channel_credentials_release(channel_oauth2_iam_creds);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void on_oauth2_creds_get_metadata_success(
@@ -565,7 +598,7 @@ static int compute_engine_httpcli_get_success_override(
     grpc_httpcli_response *response) {
   validate_compute_engine_http_request(request);
   *response = http_response(200, valid_oauth2_json_response);
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -575,7 +608,7 @@ static int compute_engine_httpcli_get_failure_override(
     grpc_httpcli_response *response) {
   validate_compute_engine_http_request(request);
   *response = http_response(403, "Not Authorized.");
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -619,7 +652,7 @@ static void test_compute_engine_creds_success(void) {
       on_oauth2_creds_get_metadata_success, (void *)test_user_data);
   grpc_exec_ctx_finish(&exec_ctx);
 
-  grpc_call_credentials_unref(compute_engine_creds);
+  grpc_call_credentials_unref(&exec_ctx, compute_engine_creds);
   grpc_httpcli_set_override(NULL, NULL);
 }
 
@@ -634,7 +667,7 @@ static void test_compute_engine_creds_failure(void) {
   grpc_call_credentials_get_request_metadata(
       &exec_ctx, compute_engine_creds, NULL, auth_md_ctx,
       on_oauth2_creds_get_metadata_failure, (void *)test_user_data);
-  grpc_call_credentials_unref(compute_engine_creds);
+  grpc_call_credentials_unref(&exec_ctx, compute_engine_creds);
   grpc_httpcli_set_override(NULL, NULL);
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -668,7 +701,7 @@ static int refresh_token_httpcli_post_success(
     grpc_closure *on_done, grpc_httpcli_response *response) {
   validate_refresh_token_http_request(request, body, body_size);
   *response = http_response(200, valid_oauth2_json_response);
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -678,7 +711,7 @@ static int refresh_token_httpcli_post_failure(
     grpc_closure *on_done, grpc_httpcli_response *response) {
   validate_refresh_token_http_request(request, body, body_size);
   *response = http_response(403, "Not Authorized.");
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -706,7 +739,7 @@ static void test_refresh_token_creds_success(void) {
       on_oauth2_creds_get_metadata_success, (void *)test_user_data);
   grpc_exec_ctx_flush(&exec_ctx);
 
-  grpc_call_credentials_unref(refresh_token_creds);
+  grpc_call_credentials_unref(&exec_ctx, refresh_token_creds);
   grpc_httpcli_set_override(NULL, NULL);
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -723,7 +756,7 @@ static void test_refresh_token_creds_failure(void) {
   grpc_call_credentials_get_request_metadata(
       &exec_ctx, refresh_token_creds, NULL, auth_md_ctx,
       on_oauth2_creds_get_metadata_failure, (void *)test_user_data);
-  grpc_call_credentials_unref(refresh_token_creds);
+  grpc_call_credentials_unref(&exec_ctx, refresh_token_creds);
   grpc_httpcli_set_override(NULL, NULL);
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -832,7 +865,7 @@ static void test_jwt_creds_success(void) {
   grpc_exec_ctx_flush(&exec_ctx);
 
   gpr_free(json_key_string);
-  grpc_call_credentials_unref(jwt_creds);
+  grpc_call_credentials_unref(&exec_ctx, jwt_creds);
   grpc_jwt_encode_and_sign_set_override(NULL);
 }
 
@@ -851,7 +884,7 @@ static void test_jwt_creds_signing_failure(void) {
       on_jwt_creds_get_metadata_failure, (void *)test_user_data);
 
   gpr_free(json_key_string);
-  grpc_call_credentials_unref(jwt_creds);
+  grpc_call_credentials_unref(&exec_ctx, jwt_creds);
   grpc_jwt_encode_and_sign_set_override(NULL);
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -870,6 +903,7 @@ static void set_google_default_creds_env_var_with_file_contents(
 }
 
 static void test_google_default_creds_auth_key(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_service_account_jwt_access_credentials *jwt;
   grpc_composite_channel_credentials *creds;
   char *json_key = test_json_key_str();
@@ -885,11 +919,13 @@ static void test_google_default_creds_auth_key(void) {
       strcmp(jwt->key.client_id,
              "777-abaslkan11hlb6nmim3bpspl31ud.apps.googleusercontent.com") ==
       0);
-  grpc_channel_credentials_unref(&creds->base);
+  grpc_channel_credentials_unref(&exec_ctx, &creds->base);
   gpr_setenv(GRPC_GOOGLE_CREDENTIALS_ENV_VAR, ""); /* Reset. */
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_google_default_creds_refresh_token(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_google_refresh_token_credentials *refresh;
   grpc_composite_channel_credentials *creds;
   grpc_flush_cached_google_default_credentials();
@@ -901,8 +937,9 @@ static void test_google_default_creds_refresh_token(void) {
   refresh = (grpc_google_refresh_token_credentials *)creds->call_creds;
   GPR_ASSERT(strcmp(refresh->refresh_token.client_id,
                     "32555999999.apps.googleusercontent.com") == 0);
-  grpc_channel_credentials_unref(&creds->base);
+  grpc_channel_credentials_unref(&exec_ctx, &creds->base);
   gpr_setenv(GRPC_GOOGLE_CREDENTIALS_ENV_VAR, ""); /* Reset. */
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static int default_creds_gce_detection_httpcli_get_success_override(
@@ -917,7 +954,7 @@ static int default_creds_gce_detection_httpcli_get_success_override(
   response->hdrs = headers;
   GPR_ASSERT(strcmp(request->http.path, "/") == 0);
   GPR_ASSERT(strcmp(request->host, "metadata.google.internal") == 0);
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -975,7 +1012,7 @@ static int default_creds_gce_detection_httpcli_get_failure_override(
   GPR_ASSERT(strcmp(request->http.path, "/") == 0);
   GPR_ASSERT(strcmp(request->host, "metadata.google.internal") == 0);
   *response = http_response(200, "");
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -1142,6 +1179,8 @@ static void test_get_well_known_google_credentials_file_path(void) {
 }
 
 static void test_channel_creds_duplicate_without_call_creds(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
   grpc_channel_credentials *channel_creds =
       grpc_fake_transport_security_credentials_create();
 
@@ -1149,21 +1188,23 @@ static void test_channel_creds_duplicate_without_call_creds(void) {
       grpc_channel_credentials_duplicate_without_call_credentials(
           channel_creds);
   GPR_ASSERT(dup == channel_creds);
-  grpc_channel_credentials_unref(dup);
+  grpc_channel_credentials_unref(&exec_ctx, dup);
 
   grpc_call_credentials *call_creds =
       grpc_access_token_credentials_create("blah", NULL);
   grpc_channel_credentials *composite_creds =
       grpc_composite_channel_credentials_create(channel_creds, call_creds,
                                                 NULL);
-  grpc_call_credentials_unref(call_creds);
+  grpc_call_credentials_unref(&exec_ctx, call_creds);
   dup = grpc_channel_credentials_duplicate_without_call_credentials(
       composite_creds);
   GPR_ASSERT(dup == channel_creds);
-  grpc_channel_credentials_unref(dup);
+  grpc_channel_credentials_unref(&exec_ctx, dup);
 
-  grpc_channel_credentials_unref(channel_creds);
-  grpc_channel_credentials_unref(composite_creds);
+  grpc_channel_credentials_unref(&exec_ctx, channel_creds);
+  grpc_channel_credentials_unref(&exec_ctx, composite_creds);
+
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 int main(int argc, char **argv) {
diff --git a/test/core/security/json_token_test.c b/test/core/security/json_token_test.c
index 201655881f242b683ad867f40621d3b9e0f8c234..5cebb09bb253301084423bedebb188342f79a835 100644
--- a/test/core/security/json_token_test.c
+++ b/test/core/security/json_token_test.c
@@ -44,6 +44,7 @@
 #include "src/core/lib/json/json.h"
 #include "src/core/lib/security/credentials/oauth2/oauth2_credentials.h"
 #include "src/core/lib/security/util/b64.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/test_config.h"
 
 /* This JSON key was generated with the GCE console and revoked immediately.
@@ -220,6 +221,7 @@ static void test_parse_json_key_failure_no_private_key(void) {
 
 static grpc_json *parse_json_part_from_jwt(const char *str, size_t len,
                                            char **scratchpad) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   char *b64;
   char *decoded;
   grpc_json *json;
@@ -227,7 +229,7 @@ static grpc_json *parse_json_part_from_jwt(const char *str, size_t len,
   b64 = gpr_malloc(len + 1);
   strncpy(b64, str, len);
   b64[len] = '\0';
-  slice = grpc_base64_decode(b64, 1);
+  slice = grpc_base64_decode(&exec_ctx, b64, 1);
   GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(slice));
   decoded = gpr_malloc(GRPC_SLICE_LENGTH(slice) + 1);
   strncpy(decoded, (const char *)GRPC_SLICE_START_PTR(slice),
@@ -237,6 +239,7 @@ static grpc_json *parse_json_part_from_jwt(const char *str, size_t len,
   gpr_free(b64);
   *scratchpad = decoded;
   grpc_slice_unref(slice);
+  grpc_exec_ctx_finish(&exec_ctx);
   return json;
 }
 
@@ -338,10 +341,12 @@ static void check_jwt_claim(grpc_json *claim, const char *expected_audience,
 static void check_jwt_signature(const char *b64_signature, RSA *rsa_key,
                                 const char *signed_data,
                                 size_t signed_data_size) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
   EVP_MD_CTX *md_ctx = EVP_MD_CTX_create();
   EVP_PKEY *key = EVP_PKEY_new();
 
-  grpc_slice sig = grpc_base64_decode(b64_signature, 1);
+  grpc_slice sig = grpc_base64_decode(&exec_ctx, b64_signature, 1);
   GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(sig));
   GPR_ASSERT(GRPC_SLICE_LENGTH(sig) == 128);
 
@@ -355,9 +360,11 @@ static void check_jwt_signature(const char *b64_signature, RSA *rsa_key,
   GPR_ASSERT(EVP_DigestVerifyFinal(md_ctx, GRPC_SLICE_START_PTR(sig),
                                    GRPC_SLICE_LENGTH(sig)) == 1);
 
-  grpc_slice_unref(sig);
+  grpc_slice_unref_internal(&exec_ctx, sig);
   if (key != NULL) EVP_PKEY_free(key);
   if (md_ctx != NULL) EVP_MD_CTX_destroy(md_ctx);
+
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static char *service_account_creds_jwt_encode_and_sign(
diff --git a/test/core/security/jwt_verifier_test.c b/test/core/security/jwt_verifier_test.c
index f8afba8d6d80eca71c23af0bb8ddde2a72a8ca48..a9bd976a39d1a1f2c5c114f80725a7c029890a8d 100644
--- a/test/core/security/jwt_verifier_test.c
+++ b/test/core/security/jwt_verifier_test.c
@@ -166,6 +166,13 @@ static const char claims_without_time_constraint[] =
     "  \"jti\": \"jwtuniqueid\","
     "  \"foo\": \"bar\"}";
 
+static const char claims_with_bad_subject[] =
+    "{ \"aud\": \"https://foo.com\","
+    "  \"iss\": \"evil@blah.foo.com\","
+    "  \"sub\": \"juju@blah.foo.com\","
+    "  \"jti\": \"jwtuniqueid\","
+    "  \"foo\": \"bar\"}";
+
 static const char invalid_claims[] =
     "{ \"aud\": \"https://foo.com\","
     "  \"iss\": 46," /* Issuer cannot be a number. */
@@ -179,13 +186,46 @@ typedef struct {
   const char *expected_subject;
 } verifier_test_config;
 
+static void test_jwt_issuer_email_domain(void) {
+  const char *d = grpc_jwt_issuer_email_domain("https://foo.com");
+  GPR_ASSERT(d == NULL);
+  d = grpc_jwt_issuer_email_domain("foo.com");
+  GPR_ASSERT(d == NULL);
+  d = grpc_jwt_issuer_email_domain("");
+  GPR_ASSERT(d == NULL);
+  d = grpc_jwt_issuer_email_domain("@");
+  GPR_ASSERT(d == NULL);
+  d = grpc_jwt_issuer_email_domain("bar@foo");
+  GPR_ASSERT(strcmp(d, "foo") == 0);
+  d = grpc_jwt_issuer_email_domain("bar@foo.com");
+  GPR_ASSERT(strcmp(d, "foo.com") == 0);
+  d = grpc_jwt_issuer_email_domain("bar@blah.foo.com");
+  GPR_ASSERT(strcmp(d, "foo.com") == 0);
+  d = grpc_jwt_issuer_email_domain("bar.blah@blah.foo.com");
+  GPR_ASSERT(strcmp(d, "foo.com") == 0);
+  d = grpc_jwt_issuer_email_domain("bar.blah@baz.blah.foo.com");
+  GPR_ASSERT(strcmp(d, "foo.com") == 0);
+
+  /* This is not a very good parser but make sure we do not crash on these weird
+     inputs. */
+  d = grpc_jwt_issuer_email_domain("@foo");
+  GPR_ASSERT(strcmp(d, "foo") == 0);
+  d = grpc_jwt_issuer_email_domain("bar@.");
+  GPR_ASSERT(d != NULL);
+  d = grpc_jwt_issuer_email_domain("bar@..");
+  GPR_ASSERT(d != NULL);
+  d = grpc_jwt_issuer_email_domain("bar@...");
+  GPR_ASSERT(d != NULL);
+}
+
 static void test_claims_success(void) {
   grpc_jwt_claims *claims;
   grpc_slice s = grpc_slice_from_copied_string(claims_without_time_constraint);
   grpc_json *json = grpc_json_parse_string_with_len(
       (char *)GRPC_SLICE_START_PTR(s), GRPC_SLICE_LENGTH(s));
   GPR_ASSERT(json != NULL);
-  claims = grpc_jwt_claims_from_json(json, s);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  claims = grpc_jwt_claims_from_json(&exec_ctx, json, s);
   GPR_ASSERT(claims != NULL);
   GPR_ASSERT(grpc_jwt_claims_json(claims) == json);
   GPR_ASSERT(strcmp(grpc_jwt_claims_audience(claims), "https://foo.com") == 0);
@@ -194,7 +234,8 @@ static void test_claims_success(void) {
   GPR_ASSERT(strcmp(grpc_jwt_claims_id(claims), "jwtuniqueid") == 0);
   GPR_ASSERT(grpc_jwt_claims_check(claims, "https://foo.com") ==
              GRPC_JWT_VERIFIER_OK);
-  grpc_jwt_claims_destroy(claims);
+  grpc_jwt_claims_destroy(&exec_ctx, claims);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_expired_claims_failure(void) {
@@ -206,7 +247,8 @@ static void test_expired_claims_failure(void) {
   gpr_timespec exp_exp = {120, 0, GPR_CLOCK_REALTIME};
   gpr_timespec exp_nbf = {60, 0, GPR_CLOCK_REALTIME};
   GPR_ASSERT(json != NULL);
-  claims = grpc_jwt_claims_from_json(json, s);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  claims = grpc_jwt_claims_from_json(&exec_ctx, json, s);
   GPR_ASSERT(claims != NULL);
   GPR_ASSERT(grpc_jwt_claims_json(claims) == json);
   GPR_ASSERT(strcmp(grpc_jwt_claims_audience(claims), "https://foo.com") == 0);
@@ -219,14 +261,17 @@ static void test_expired_claims_failure(void) {
 
   GPR_ASSERT(grpc_jwt_claims_check(claims, "https://foo.com") ==
              GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE);
-  grpc_jwt_claims_destroy(claims);
+  grpc_jwt_claims_destroy(&exec_ctx, claims);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_invalid_claims_failure(void) {
   grpc_slice s = grpc_slice_from_copied_string(invalid_claims);
   grpc_json *json = grpc_json_parse_string_with_len(
       (char *)GRPC_SLICE_START_PTR(s), GRPC_SLICE_LENGTH(s));
-  GPR_ASSERT(grpc_jwt_claims_from_json(json, s) == NULL);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GPR_ASSERT(grpc_jwt_claims_from_json(&exec_ctx, json, s) == NULL);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_bad_audience_claims_failure(void) {
@@ -235,11 +280,28 @@ static void test_bad_audience_claims_failure(void) {
   grpc_json *json = grpc_json_parse_string_with_len(
       (char *)GRPC_SLICE_START_PTR(s), GRPC_SLICE_LENGTH(s));
   GPR_ASSERT(json != NULL);
-  claims = grpc_jwt_claims_from_json(json, s);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  claims = grpc_jwt_claims_from_json(&exec_ctx, json, s);
   GPR_ASSERT(claims != NULL);
   GPR_ASSERT(grpc_jwt_claims_check(claims, "https://bar.com") ==
              GRPC_JWT_VERIFIER_BAD_AUDIENCE);
-  grpc_jwt_claims_destroy(claims);
+  grpc_jwt_claims_destroy(&exec_ctx, claims);
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
+static void test_bad_subject_claims_failure(void) {
+  grpc_jwt_claims *claims;
+  grpc_slice s = grpc_slice_from_copied_string(claims_with_bad_subject);
+  grpc_json *json = grpc_json_parse_string_with_len(
+      (char *)GRPC_SLICE_START_PTR(s), GRPC_SLICE_LENGTH(s));
+  GPR_ASSERT(json != NULL);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  claims = grpc_jwt_claims_from_json(&exec_ctx, json, s);
+  GPR_ASSERT(claims != NULL);
+  GPR_ASSERT(grpc_jwt_claims_check(claims, "https://foo.com") ==
+             GRPC_JWT_VERIFIER_BAD_SUBJECT);
+  grpc_jwt_claims_destroy(&exec_ctx, claims);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static char *json_key_str(const char *last_part) {
@@ -294,18 +356,18 @@ static int httpcli_get_google_keys_for_email(
                     "/robot/v1/metadata/x509/"
                     "777-abaslkan11hlb6nmim3bpspl31ud@developer."
                     "gserviceaccount.com") == 0);
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
-static void on_verification_success(void *user_data,
+static void on_verification_success(grpc_exec_ctx *exec_ctx, void *user_data,
                                     grpc_jwt_verifier_status status,
                                     grpc_jwt_claims *claims) {
   GPR_ASSERT(status == GRPC_JWT_VERIFIER_OK);
   GPR_ASSERT(claims != NULL);
   GPR_ASSERT(user_data == (void *)expected_user_data);
   GPR_ASSERT(strcmp(grpc_jwt_claims_audience(claims), expected_audience) == 0);
-  grpc_jwt_claims_destroy(claims);
+  grpc_jwt_claims_destroy(exec_ctx, claims);
 }
 
 static void test_jwt_verifier_google_email_issuer_success(void) {
@@ -338,7 +400,7 @@ static int httpcli_get_custom_keys_for_email(
   GPR_ASSERT(request->handshaker == &grpc_httpcli_ssl);
   GPR_ASSERT(strcmp(request->host, "keys.bar.com") == 0);
   GPR_ASSERT(strcmp(request->http.path, "/jwk/foo@bar.com") == 0);
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -372,7 +434,7 @@ static int httpcli_get_jwk_set(grpc_exec_ctx *exec_ctx,
   GPR_ASSERT(request->handshaker == &grpc_httpcli_ssl);
   GPR_ASSERT(strcmp(request->host, "www.googleapis.com") == 0);
   GPR_ASSERT(strcmp(request->http.path, "/oauth2/v3/certs") == 0);
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -387,7 +449,7 @@ static int httpcli_get_openid_config(grpc_exec_ctx *exec_ctx,
   GPR_ASSERT(strcmp(request->http.path, GRPC_OPENID_CONFIG_URL_SUFFIX) == 0);
   grpc_httpcli_set_override(httpcli_get_jwk_set,
                             httpcli_post_should_not_be_called);
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -413,7 +475,8 @@ static void test_jwt_verifier_url_issuer_success(void) {
   grpc_httpcli_set_override(NULL, NULL);
 }
 
-static void on_verification_key_retrieval_error(void *user_data,
+static void on_verification_key_retrieval_error(grpc_exec_ctx *exec_ctx,
+                                                void *user_data,
                                                 grpc_jwt_verifier_status status,
                                                 grpc_jwt_claims *claims) {
   GPR_ASSERT(status == GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR);
@@ -427,7 +490,7 @@ static int httpcli_get_bad_json(grpc_exec_ctx *exec_ctx,
                                 grpc_httpcli_response *response) {
   *response = http_response(200, gpr_strdup("{\"bad\": \"stuff\"}"));
   GPR_ASSERT(request->handshaker == &grpc_httpcli_ssl);
-  grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, on_done, GRPC_ERROR_NONE);
   return 1;
 }
 
@@ -483,7 +546,11 @@ static void corrupt_jwt_sig(char *jwt) {
   uint8_t *sig_bytes;
   char *last_dot = strrchr(jwt, '.');
   GPR_ASSERT(last_dot != NULL);
-  sig = grpc_base64_decode(last_dot + 1, 1);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    sig = grpc_base64_decode(&exec_ctx, last_dot + 1, 1);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(sig));
   sig_bytes = GRPC_SLICE_START_PTR(sig);
   (*sig_bytes)++; /* Corrupt first byte. */
@@ -494,7 +561,8 @@ static void corrupt_jwt_sig(char *jwt) {
   grpc_slice_unref(sig);
 }
 
-static void on_verification_bad_signature(void *user_data,
+static void on_verification_bad_signature(grpc_exec_ctx *exec_ctx,
+                                          void *user_data,
                                           grpc_jwt_verifier_status status,
                                           grpc_jwt_claims *claims) {
   GPR_ASSERT(status == GRPC_JWT_VERIFIER_BAD_SIGNATURE);
@@ -535,7 +603,7 @@ static int httpcli_get_should_not_be_called(grpc_exec_ctx *exec_ctx,
   return 1;
 }
 
-static void on_verification_bad_format(void *user_data,
+static void on_verification_bad_format(grpc_exec_ctx *exec_ctx, void *user_data,
                                        grpc_jwt_verifier_status status,
                                        grpc_jwt_claims *claims) {
   GPR_ASSERT(status == GRPC_JWT_VERIFIER_BAD_FORMAT);
@@ -563,10 +631,12 @@ static void test_jwt_verifier_bad_format(void) {
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   grpc_init();
+  test_jwt_issuer_email_domain();
   test_claims_success();
   test_expired_claims_failure();
   test_invalid_claims_failure();
   test_bad_audience_claims_failure();
+  test_bad_subject_claims_failure();
   test_jwt_verifier_google_email_issuer_success();
   test_jwt_verifier_custom_email_issuer_success();
   test_jwt_verifier_url_issuer_success();
diff --git a/test/core/security/oauth2_utils.c b/test/core/security/oauth2_utils.c
index 44a209258d8228c5703cd1c247d0e609139c8fa2..ff77af908a996fc1a802a390ae4b94ce52cf03e2 100644
--- a/test/core/security/oauth2_utils.c
+++ b/test/core/security/oauth2_utils.c
@@ -92,7 +92,8 @@ char *grpc_test_fetch_oauth2_token_with_credentials(
   request.pops = grpc_polling_entity_create_from_pollset(pollset);
   request.is_done = 0;
 
-  grpc_closure_init(&do_nothing_closure, do_nothing, NULL);
+  grpc_closure_init(&do_nothing_closure, do_nothing, NULL,
+                    grpc_schedule_on_exec_ctx);
 
   grpc_call_credentials_get_request_metadata(
       &exec_ctx, creds, &request.pops, null_ctx, on_oauth2_response, &request);
diff --git a/test/core/security/secure_endpoint_test.c b/test/core/security/secure_endpoint_test.c
index b5d95004fe450409cda8dabbcd118078da90fd55..e1d6ff9691fd1e4826538bfe464bc76a6481f4f0 100644
--- a/test/core/security/secure_endpoint_test.c
+++ b/test/core/security/secure_endpoint_test.c
@@ -42,6 +42,7 @@
 #include "src/core/lib/iomgr/endpoint_pair.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/security/transport/secure_endpoint.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/tsi/fake_transport_security.h"
 #include "test/core/util/test_config.h"
 
@@ -59,7 +60,7 @@ static grpc_endpoint_test_fixture secure_endpoint_create_fixture_tcp_socketpair(
   grpc_resource_quota *resource_quota =
       grpc_resource_quota_create("secure_endpoint_test");
   tcp = grpc_iomgr_create_endpoint_pair("fixture", resource_quota, slice_size);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   grpc_endpoint_add_to_pollset(&exec_ctx, tcp.client, g_pollset);
   grpc_endpoint_add_to_pollset(&exec_ctx, tcp.server, g_pollset);
 
@@ -158,7 +159,7 @@ static void test_leftover(grpc_endpoint_test_config config, size_t slice_size) {
   gpr_log(GPR_INFO, "Start test left over");
 
   grpc_slice_buffer_init(&incoming);
-  grpc_closure_init(&done_closure, inc_call_ctr, &n);
+  grpc_closure_init(&done_closure, inc_call_ctr, &n, grpc_schedule_on_exec_ctx);
   grpc_endpoint_read(&exec_ctx, f.client_ep, &incoming, &done_closure);
   grpc_exec_ctx_finish(&exec_ctx);
   GPR_ASSERT(n == 1);
@@ -170,8 +171,8 @@ static void test_leftover(grpc_endpoint_test_config config, size_t slice_size) {
   grpc_endpoint_destroy(&exec_ctx, f.client_ep);
   grpc_endpoint_destroy(&exec_ctx, f.server_ep);
   grpc_exec_ctx_finish(&exec_ctx);
-  grpc_slice_unref(s);
-  grpc_slice_buffer_destroy(&incoming);
+  grpc_slice_unref_internal(&exec_ctx, s);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &incoming);
 
   clean_up();
 }
@@ -191,7 +192,8 @@ int main(int argc, char **argv) {
   grpc_pollset_init(g_pollset, &g_mu);
   grpc_endpoint_tests(configs[0], g_pollset, g_mu);
   test_leftover(configs[1], 1);
-  grpc_closure_init(&destroyed, destroy_pollset, g_pollset);
+  grpc_closure_init(&destroyed, destroy_pollset, g_pollset,
+                    grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
   grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
diff --git a/test/core/security/ssl_server_fuzzer.c b/test/core/security/ssl_server_fuzzer.c
index 8673225fef3eb30d14622ec7b61cdeec1debe088..55e8f5e78d23042b28cea890b008c66932ddba5c 100644
--- a/test/core/security/ssl_server_fuzzer.c
+++ b/test/core/security/ssl_server_fuzzer.c
@@ -79,7 +79,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
       grpc_resource_quota_create("ssl_server_fuzzer");
   grpc_endpoint *mock_endpoint =
       grpc_mock_endpoint_create(discard_write, resource_quota);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
 
   grpc_mock_endpoint_put_read(
       &exec_ctx, mock_endpoint,
@@ -103,7 +103,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   // Create security connector
   grpc_server_security_connector *sc = NULL;
   grpc_security_status status =
-      grpc_server_credentials_create_security_connector(creds, &sc);
+      grpc_server_credentials_create_security_connector(&exec_ctx, creds, &sc);
   GPR_ASSERT(status == GRPC_SECURITY_OK);
   gpr_timespec deadline = gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
                                        gpr_time_from_seconds(1, GPR_TIMESPAN));
@@ -128,7 +128,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   GPR_ASSERT(state.done_callback_called);
 
   grpc_handshake_manager_destroy(&exec_ctx, handshake_mgr);
-  GRPC_SECURITY_CONNECTOR_UNREF(&sc->base, "test");
+  GRPC_SECURITY_CONNECTOR_UNREF(&exec_ctx, &sc->base, "test");
   grpc_server_credentials_release(creds);
   grpc_slice_unref(cert_slice);
   grpc_slice_unref(key_slice);
diff --git a/test/core/security/verify_jwt.c b/test/core/security/verify_jwt.c
index 043d29e6bb94cf6b5115c0fde228d8f8ef70b058..bbd4a67ac1cba1cc80fb86869407ef1a22c91b7c 100644
--- a/test/core/security/verify_jwt.c
+++ b/test/core/security/verify_jwt.c
@@ -59,7 +59,7 @@ static void print_usage_and_exit(gpr_cmdline *cl, const char *argv0) {
   exit(1);
 }
 
-static void on_jwt_verification_done(void *user_data,
+static void on_jwt_verification_done(grpc_exec_ctx *exec_ctx, void *user_data,
                                      grpc_jwt_verifier_status status,
                                      grpc_jwt_claims *claims) {
   synchronizer *sync = user_data;
@@ -72,7 +72,7 @@ static void on_jwt_verification_done(void *user_data,
         grpc_json_dump_to_string((grpc_json *)grpc_jwt_claims_json(claims), 2);
     printf("Claims: \n\n%s\n", claims_str);
     gpr_free(claims_str);
-    grpc_jwt_claims_destroy(claims);
+    grpc_jwt_claims_destroy(exec_ctx, claims);
   } else {
     GPR_ASSERT(claims == NULL);
     fprintf(stderr, "Verification failed with error %s\n",
@@ -93,6 +93,7 @@ int main(int argc, char **argv) {
   char *aud = NULL;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  grpc_init();
   cl = gpr_cmdline_create("JWT verifier tool");
   gpr_cmdline_add_string(cl, "jwt", "JSON web token to verify", &jwt);
   gpr_cmdline_add_string(cl, "aud", "Audience for the JWT", &aud);
@@ -131,5 +132,6 @@ int main(int argc, char **argv) {
 
   grpc_jwt_verifier_destroy(verifier);
   gpr_cmdline_destroy(cl);
+  grpc_shutdown();
   return !sync.success;
 }
diff --git a/test/core/support/BUILD b/test/core/support/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..dfe952eb373e336c90cd6758ea78eb891d0399ff
--- /dev/null
+++ b/test/core/support/BUILD
@@ -0,0 +1,154 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+cc_test(
+    name = "alloc_test",
+    srcs = ["alloc_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "avl_test",
+    srcs = ["avl_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "backoff_test",
+    srcs = ["backoff_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "cmdline_test",
+    srcs = ["cmdline_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "cpu_test",
+    srcs = ["cpu_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "env_test",
+    srcs = ["env_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "histogram_test",
+    srcs = ["histogram_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "host_port_test",
+    srcs = ["host_port_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "log_test",
+    srcs = ["log_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "mpscq_test",
+    srcs = ["mpscq_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "murmur_hash_test",
+    srcs = ["murmur_hash_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "stack_lockfree_test",
+    srcs = ["stack_lockfree_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "string_test",
+    srcs = ["string_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "sync_test",
+    srcs = ["sync_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "thd_test",
+    srcs = ["thd_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "time_test",
+    srcs = ["time_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "tls_test",
+    srcs = ["tls_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "useful_test",
+    srcs = ["useful_test.c"],
+    deps = ["//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/support/string_test.c b/test/core/support/string_test.c
index 78b77fad8e8791974af51ccf919c598e11bed6d4..af232db350d9b5740d43aedc54fee2803243b0ef 100644
--- a/test/core/support/string_test.c
+++ b/test/core/support/string_test.c
@@ -243,6 +243,8 @@ static void test_int64toa() {
 static void test_leftpad() {
   char *padded;
 
+  LOG_TEST_NAME("test_leftpad");
+
   padded = gpr_leftpad("foo", ' ', 5);
   GPR_ASSERT(0 == strcmp("  foo", padded));
   gpr_free(padded);
@@ -273,12 +275,25 @@ static void test_leftpad() {
 }
 
 static void test_stricmp(void) {
+  LOG_TEST_NAME("test_stricmp");
+
   GPR_ASSERT(0 == gpr_stricmp("hello", "hello"));
   GPR_ASSERT(0 == gpr_stricmp("HELLO", "hello"));
   GPR_ASSERT(gpr_stricmp("a", "b") < 0);
   GPR_ASSERT(gpr_stricmp("b", "a") > 0);
 }
 
+static void test_memrchr(void) {
+  LOG_TEST_NAME("test_memrchr");
+
+  GPR_ASSERT(NULL == gpr_memrchr(NULL, 'a', 0));
+  GPR_ASSERT(NULL == gpr_memrchr("", 'a', 0));
+  GPR_ASSERT(NULL == gpr_memrchr("hello", 'b', 5));
+  GPR_ASSERT(0 == strcmp((const char *)gpr_memrchr("hello", 'h', 5), "hello"));
+  GPR_ASSERT(0 == strcmp((const char *)gpr_memrchr("hello", 'o', 5), "o"));
+  GPR_ASSERT(0 == strcmp((const char *)gpr_memrchr("hello", 'l', 5), "lo"));
+}
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   test_strdup();
@@ -291,5 +306,6 @@ int main(int argc, char **argv) {
   test_int64toa();
   test_leftpad();
   test_stricmp();
+  test_memrchr();
   return 0;
 }
diff --git a/test/core/surface/byte_buffer_reader_test.c b/test/core/surface/byte_buffer_reader_test.c
index d8d7a52d15a4c7c7ca755ae03be56151c7633be9..2f1f72f0e0a5c56373bd92e36e4977d24c4f52e7 100644
--- a/test/core/surface/byte_buffer_reader_test.c
+++ b/test/core/surface/byte_buffer_reader_test.c
@@ -40,9 +40,10 @@
 #include <grpc/support/log.h>
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
-#include "test/core/util/test_config.h"
 
 #include "src/core/lib/compression/message_compress.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "test/core/util/test_config.h"
 
 #include <string.h>
 
@@ -145,7 +146,12 @@ static void read_compressed_slice(grpc_compression_algorithm algorithm,
   input_slice = grpc_slice_malloc(input_size);
   memset(GRPC_SLICE_START_PTR(input_slice), 'a', input_size);
   grpc_slice_buffer_add(&sliceb_in, input_slice); /* takes ownership */
-  GPR_ASSERT(grpc_msg_compress(algorithm, &sliceb_in, &sliceb_out));
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    GPR_ASSERT(
+        grpc_msg_compress(&exec_ctx, algorithm, &sliceb_in, &sliceb_out));
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   buffer = grpc_raw_compressed_byte_buffer_create(sliceb_out.slices,
                                                   sliceb_out.count, algorithm);
diff --git a/test/core/surface/channel_create_test.c b/test/core/surface/channel_create_test.c
index ad7970aab9d220a4ec50c93a0a48b1dc107a7a4f..654e5324d980aa376a074913f755b3937f0cd2ad 100644
--- a/test/core/surface/channel_create_test.c
+++ b/test/core/surface/channel_create_test.c
@@ -31,9 +31,14 @@
  *
  */
 
+#include <string.h>
+
 #include <grpc/grpc.h>
 #include <grpc/support/log.h>
+
 #include "src/core/ext/client_channel/resolver_registry.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/surface/channel.h"
 #include "test/core/util/test_config.h"
 
 void test_unknown_scheme_target(void) {
@@ -44,6 +49,13 @@ void test_unknown_scheme_target(void) {
 
   chan = grpc_insecure_channel_create("blah://blah", NULL, NULL);
   GPR_ASSERT(chan != NULL);
+
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_channel_element *elem =
+      grpc_channel_stack_element(grpc_channel_get_channel_stack(chan), 0);
+  GPR_ASSERT(0 == strcmp(elem->filter->name, "lame-client"));
+  grpc_exec_ctx_finish(&exec_ctx);
+
   grpc_channel_destroy(chan);
 }
 
diff --git a/test/core/surface/concurrent_connectivity_test.c b/test/core/surface/concurrent_connectivity_test.c
index 93a47942223076022eb8369a240275bbca732613..8ebe8d07e4c6a7c6568dd4d7b35dee0789c286d8 100644
--- a/test/core/surface/concurrent_connectivity_test.c
+++ b/test/core/surface/concurrent_connectivity_test.c
@@ -229,9 +229,9 @@ int main(int argc, char **argv) {
   gpr_atm_rel_store(&args.stop, 1);
   gpr_thd_join(server);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_pollset_shutdown(
-      &exec_ctx, args.pollset,
-      grpc_closure_create(done_pollset_shutdown, args.pollset));
+  grpc_pollset_shutdown(&exec_ctx, args.pollset,
+                        grpc_closure_create(done_pollset_shutdown, args.pollset,
+                                            grpc_schedule_on_exec_ctx));
   grpc_exec_ctx_finish(&exec_ctx);
 
   grpc_shutdown();
diff --git a/test/core/surface/lame_client_test.c b/test/core/surface/lame_client_test.c
index 6afcefca9236c000e4482323fc96ab9ae9e2342f..b6db6a6b084578de5ad4077d200a9440953a77c2 100644
--- a/test/core/surface/lame_client_test.c
+++ b/test/core/surface/lame_client_test.c
@@ -62,7 +62,8 @@ void test_transport_op(grpc_channel *channel) {
   grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
-  grpc_closure_init(&transport_op_cb, verify_connectivity, &state);
+  grpc_closure_init(&transport_op_cb, verify_connectivity, &state,
+                    grpc_schedule_on_exec_ctx);
 
   op = grpc_make_transport_op(NULL);
   op->on_connectivity_state_change = &transport_op_cb;
@@ -71,7 +72,8 @@ void test_transport_op(grpc_channel *channel) {
   elem->filter->start_transport_op(&exec_ctx, elem, op);
   grpc_exec_ctx_finish(&exec_ctx);
 
-  grpc_closure_init(&transport_op_cb, do_nothing, NULL);
+  grpc_closure_init(&transport_op_cb, do_nothing, NULL,
+                    grpc_schedule_on_exec_ctx);
   op = grpc_make_transport_op(&transport_op_cb);
   elem->filter->start_transport_op(&exec_ctx, elem, op);
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/test/core/surface/public_headers_must_be_c89.c b/test/core/surface/public_headers_must_be_c89.c
index d4cfa25d44b8ec142dcfd4eb44139da4813ef9c6..e0a2c94216d8a2c82e924a2c9f063f86e0fb32eb 100644
--- a/test/core/surface/public_headers_must_be_c89.c
+++ b/test/core/surface/public_headers_must_be_c89.c
@@ -42,6 +42,8 @@
 #include <grpc/impl/codegen/byte_buffer_reader.h>
 #include <grpc/impl/codegen/compression_types.h>
 #include <grpc/impl/codegen/connectivity_state.h>
+#include <grpc/impl/codegen/exec_ctx_fwd.h>
+#include <grpc/impl/codegen/gpr_slice.h>
 #include <grpc/impl/codegen/gpr_types.h>
 #include <grpc/impl/codegen/grpc_types.h>
 #include <grpc/impl/codegen/port_platform.h>
diff --git a/test/core/surface/secure_channel_create_test.c b/test/core/surface/secure_channel_create_test.c
index 444ebdc093816948c9aa829d2c9b489a4f631afe..ab4067dbe16737c93fa3e01005eb028c44b7fbd2 100644
--- a/test/core/surface/secure_channel_create_test.c
+++ b/test/core/surface/secure_channel_create_test.c
@@ -51,7 +51,9 @@ void test_unknown_scheme_target(void) {
   creds = grpc_fake_transport_security_credentials_create();
   chan = grpc_secure_channel_create(creds, "blah://blah", NULL, NULL);
   GPR_ASSERT(chan == NULL);
-  grpc_channel_credentials_unref(creds);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_channel_credentials_unref(&exec_ctx, creds);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 void test_security_connector_already_in_arg(void) {
diff --git a/test/core/surface/sequential_connectivity_test.c b/test/core/surface/sequential_connectivity_test.c
index fe87f119f2f1a9eaaa6226ad514f14f5cd6c694e..32927187626dff42b7218540ee4eeb9bb3bc709e 100644
--- a/test/core/surface/sequential_connectivity_test.c
+++ b/test/core/surface/sequential_connectivity_test.c
@@ -39,6 +39,7 @@
 #include <grpc/support/thd.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
@@ -162,7 +163,11 @@ static grpc_channel *secure_test_create_channel(const char *addr) {
       grpc_channel_args_copy_and_add(NULL, &ssl_name_override, 1);
   grpc_channel *channel =
       grpc_secure_channel_create(ssl_creds, addr, new_client_args, NULL);
-  grpc_channel_args_destroy(new_client_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, new_client_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   grpc_channel_credentials_release(ssl_creds);
   return channel;
 }
diff --git a/test/core/transport/chttp2/BUILD b/test/core/transport/chttp2/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..94b48301386a18cff023fcd3a42c2ebfa60603ba
--- /dev/null
+++ b/test/core/transport/chttp2/BUILD
@@ -0,0 +1,40 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+grpc_fuzzer(
+  name = "hpack_parser_fuzzer",
+  srcs = ["hpack_parser_fuzzer_test.c"],
+  deps = ["//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "hpack_parser_corpus"
+)
+
diff --git a/test/core/transport/chttp2/bin_decoder_test.c b/test/core/transport/chttp2/bin_decoder_test.c
index 7ddc30291add7703290f6a347a707e07c32b293e..221112ab21ba6519ccfb44b9a4ea03dd29fe8e16 100644
--- a/test/core/transport/chttp2/bin_decoder_test.c
+++ b/test/core/transport/chttp2/bin_decoder_test.c
@@ -38,13 +38,14 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
 static int all_ok = 1;
 
-static void expect_slice_eq(grpc_slice expected, grpc_slice slice, char *debug,
-                            int line) {
+static void expect_slice_eq(grpc_exec_ctx *exec_ctx, grpc_slice expected,
+                            grpc_slice slice, char *debug, int line) {
   if (0 != grpc_slice_cmp(slice, expected)) {
     char *hs = grpc_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
     char *he = grpc_dump_slice(expected, GPR_DUMP_HEX | GPR_DUMP_ASCII);
@@ -54,92 +55,104 @@ static void expect_slice_eq(grpc_slice expected, grpc_slice slice, char *debug,
     gpr_free(he);
     all_ok = 0;
   }
-  grpc_slice_unref(expected);
-  grpc_slice_unref(slice);
+  grpc_slice_unref_internal(exec_ctx, expected);
+  grpc_slice_unref_internal(exec_ctx, slice);
 }
 
-static grpc_slice base64_encode(const char *s) {
+static grpc_slice base64_encode(grpc_exec_ctx *exec_ctx, const char *s) {
   grpc_slice ss = grpc_slice_from_copied_string(s);
   grpc_slice out = grpc_chttp2_base64_encode(ss);
-  grpc_slice_unref(ss);
+  grpc_slice_unref_internal(exec_ctx, ss);
   return out;
 }
 
-static grpc_slice base64_decode(const char *s) {
+static grpc_slice base64_decode(grpc_exec_ctx *exec_ctx, const char *s) {
   grpc_slice ss = grpc_slice_from_copied_string(s);
-  grpc_slice out = grpc_chttp2_base64_decode(ss);
-  grpc_slice_unref(ss);
+  grpc_slice out = grpc_chttp2_base64_decode(exec_ctx, ss);
+  grpc_slice_unref_internal(exec_ctx, ss);
   return out;
 }
 
-static grpc_slice base64_decode_with_length(const char *s,
+static grpc_slice base64_decode_with_length(grpc_exec_ctx *exec_ctx,
+                                            const char *s,
                                             size_t output_length) {
   grpc_slice ss = grpc_slice_from_copied_string(s);
-  grpc_slice out = grpc_chttp2_base64_decode_with_length(ss, output_length);
-  grpc_slice_unref(ss);
+  grpc_slice out =
+      grpc_chttp2_base64_decode_with_length(exec_ctx, ss, output_length);
+  grpc_slice_unref_internal(exec_ctx, ss);
   return out;
 }
 
-#define EXPECT_SLICE_EQ(expected, slice)                                    \
-  expect_slice_eq(                                                          \
-      grpc_slice_from_copied_buffer(expected, sizeof(expected) - 1), slice, \
-      #slice, __LINE__);
+#define EXPECT_SLICE_EQ(exec_ctx, expected, slice)                             \
+  expect_slice_eq(                                                             \
+      exec_ctx, grpc_slice_from_copied_buffer(expected, sizeof(expected) - 1), \
+      slice, #slice, __LINE__);
 
-#define ENCODE_AND_DECODE(s) \
-  EXPECT_SLICE_EQ(           \
-      s, grpc_chttp2_base64_decode_with_length(base64_encode(s), strlen(s)));
+#define ENCODE_AND_DECODE(exec_ctx, s)                   \
+  EXPECT_SLICE_EQ(exec_ctx, s,                           \
+                  grpc_chttp2_base64_decode_with_length( \
+                      exec_ctx, base64_encode(exec_ctx, s), strlen(s)));
 
 int main(int argc, char **argv) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
   /* ENCODE_AND_DECODE tests grpc_chttp2_base64_decode_with_length(), which
      takes encoded base64 strings without pad chars, but output length is
      required. */
   /* Base64 test vectors from RFC 4648 */
-  ENCODE_AND_DECODE("");
-  ENCODE_AND_DECODE("f");
-  ENCODE_AND_DECODE("foo");
-  ENCODE_AND_DECODE("fo");
-  ENCODE_AND_DECODE("foob");
-  ENCODE_AND_DECODE("fooba");
-  ENCODE_AND_DECODE("foobar");
+  ENCODE_AND_DECODE(&exec_ctx, "");
+  ENCODE_AND_DECODE(&exec_ctx, "f");
+  ENCODE_AND_DECODE(&exec_ctx, "foo");
+  ENCODE_AND_DECODE(&exec_ctx, "fo");
+  ENCODE_AND_DECODE(&exec_ctx, "foob");
+  ENCODE_AND_DECODE(&exec_ctx, "fooba");
+  ENCODE_AND_DECODE(&exec_ctx, "foobar");
 
-  ENCODE_AND_DECODE("\xc0\xc1\xc2\xc3\xc4\xc5");
+  ENCODE_AND_DECODE(&exec_ctx, "\xc0\xc1\xc2\xc3\xc4\xc5");
 
   /* Base64 test vectors from RFC 4648, with pad chars */
   /* BASE64("") = "" */
-  EXPECT_SLICE_EQ("", base64_decode(""));
+  EXPECT_SLICE_EQ(&exec_ctx, "", base64_decode(&exec_ctx, ""));
   /* BASE64("f") = "Zg==" */
-  EXPECT_SLICE_EQ("f", base64_decode("Zg=="));
+  EXPECT_SLICE_EQ(&exec_ctx, "f", base64_decode(&exec_ctx, "Zg=="));
   /* BASE64("fo") = "Zm8=" */
-  EXPECT_SLICE_EQ("fo", base64_decode("Zm8="));
+  EXPECT_SLICE_EQ(&exec_ctx, "fo", base64_decode(&exec_ctx, "Zm8="));
   /* BASE64("foo") = "Zm9v" */
-  EXPECT_SLICE_EQ("foo", base64_decode("Zm9v"));
+  EXPECT_SLICE_EQ(&exec_ctx, "foo", base64_decode(&exec_ctx, "Zm9v"));
   /* BASE64("foob") = "Zm9vYg==" */
-  EXPECT_SLICE_EQ("foob", base64_decode("Zm9vYg=="));
+  EXPECT_SLICE_EQ(&exec_ctx, "foob", base64_decode(&exec_ctx, "Zm9vYg=="));
   /* BASE64("fooba") = "Zm9vYmE=" */
-  EXPECT_SLICE_EQ("fooba", base64_decode("Zm9vYmE="));
+  EXPECT_SLICE_EQ(&exec_ctx, "fooba", base64_decode(&exec_ctx, "Zm9vYmE="));
   /* BASE64("foobar") = "Zm9vYmFy" */
-  EXPECT_SLICE_EQ("foobar", base64_decode("Zm9vYmFy"));
+  EXPECT_SLICE_EQ(&exec_ctx, "foobar", base64_decode(&exec_ctx, "Zm9vYmFy"));
 
-  EXPECT_SLICE_EQ("\xc0\xc1\xc2\xc3\xc4\xc5", base64_decode("wMHCw8TF"));
+  EXPECT_SLICE_EQ(&exec_ctx, "\xc0\xc1\xc2\xc3\xc4\xc5",
+                  base64_decode(&exec_ctx, "wMHCw8TF"));
 
   // Test illegal input length in grpc_chttp2_base64_decode
-  EXPECT_SLICE_EQ("", base64_decode("a"));
-  EXPECT_SLICE_EQ("", base64_decode("ab"));
-  EXPECT_SLICE_EQ("", base64_decode("abc"));
+  EXPECT_SLICE_EQ(&exec_ctx, "", base64_decode(&exec_ctx, "a"));
+  EXPECT_SLICE_EQ(&exec_ctx, "", base64_decode(&exec_ctx, "ab"));
+  EXPECT_SLICE_EQ(&exec_ctx, "", base64_decode(&exec_ctx, "abc"));
 
   // Test illegal charactors in grpc_chttp2_base64_decode
-  EXPECT_SLICE_EQ("", base64_decode("Zm:v"));
-  EXPECT_SLICE_EQ("", base64_decode("Zm=v"));
+  EXPECT_SLICE_EQ(&exec_ctx, "", base64_decode(&exec_ctx, "Zm:v"));
+  EXPECT_SLICE_EQ(&exec_ctx, "", base64_decode(&exec_ctx, "Zm=v"));
 
   // Test output_length longer than max possible output length in
   // grpc_chttp2_base64_decode_with_length
-  EXPECT_SLICE_EQ("", base64_decode_with_length("Zg", 2));
-  EXPECT_SLICE_EQ("", base64_decode_with_length("Zm8", 3));
-  EXPECT_SLICE_EQ("", base64_decode_with_length("Zm9v", 4));
+  EXPECT_SLICE_EQ(&exec_ctx, "", base64_decode_with_length(&exec_ctx, "Zg", 2));
+  EXPECT_SLICE_EQ(&exec_ctx, "",
+                  base64_decode_with_length(&exec_ctx, "Zm8", 3));
+  EXPECT_SLICE_EQ(&exec_ctx, "",
+                  base64_decode_with_length(&exec_ctx, "Zm9v", 4));
 
   // Test illegal charactors in grpc_chttp2_base64_decode_with_length
-  EXPECT_SLICE_EQ("", base64_decode_with_length("Zm:v", 3));
-  EXPECT_SLICE_EQ("", base64_decode_with_length("Zm=v", 3));
+  EXPECT_SLICE_EQ(&exec_ctx, "",
+                  base64_decode_with_length(&exec_ctx, "Zm:v", 3));
+  EXPECT_SLICE_EQ(&exec_ctx, "",
+                  base64_decode_with_length(&exec_ctx, "Zm=v", 3));
+
+  grpc_exec_ctx_finish(&exec_ctx);
 
   return all_ok ? 0 : 1;
 }
diff --git a/test/core/transport/chttp2/hpack_encoder_test.c b/test/core/transport/chttp2/hpack_encoder_test.c
index 91421e18f49856ae861fef61010465dfea04a0f1..1fd2540d652620114260fe8c686e94f49fd54f2a 100644
--- a/test/core/transport/chttp2/hpack_encoder_test.c
+++ b/test/core/transport/chttp2/hpack_encoder_test.c
@@ -41,6 +41,7 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/transport/chttp2/transport/hpack_parser.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/metadata.h"
@@ -59,8 +60,9 @@ size_t cap_to_delete = 0;
 
 /* verify that the output generated by encoding the stream matches the
    hexstring passed in */
-static void verify(size_t window_available, int eof, size_t expect_window_used,
-                   const char *expected, size_t nheaders, ...) {
+static void verify(grpc_exec_ctx *exec_ctx, size_t window_available, int eof,
+                   size_t expect_window_used, const char *expected,
+                   size_t nheaders, ...) {
   grpc_slice_buffer output;
   grpc_slice merged;
   grpc_slice expect = parse_hexstring(expected);
@@ -79,7 +81,7 @@ static void verify(size_t window_available, int eof, size_t expect_window_used,
       e[i - 1].next = &e[i];
       e[i].prev = &e[i - 1];
     }
-    e[i].md = grpc_mdelem_from_strings(key, value);
+    e[i].md = grpc_mdelem_from_strings(exec_ctx, key, value);
   }
   e[0].prev = NULL;
   e[nheaders - 1].next = NULL;
@@ -98,11 +100,11 @@ static void verify(size_t window_available, int eof, size_t expect_window_used,
 
   grpc_transport_one_way_stats stats;
   memset(&stats, 0, sizeof(stats));
-  grpc_chttp2_encode_header(&g_compressor, 0xdeadbeef, &b, eof, 16384, &stats,
-                            &output);
+  grpc_chttp2_encode_header(exec_ctx, &g_compressor, 0xdeadbeef, &b, eof, 16384,
+                            &stats, &output);
   merged = grpc_slice_merge(output.slices, output.count);
-  grpc_slice_buffer_destroy(&output);
-  grpc_metadata_batch_destroy(&b);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &output);
+  grpc_metadata_batch_destroy(exec_ctx, &b);
 
   if (0 != grpc_slice_cmp(merged, expect)) {
     char *expect_str = grpc_dump_slice(expect, GPR_DUMP_HEX | GPR_DUMP_ASCII);
@@ -115,31 +117,32 @@ static void verify(size_t window_available, int eof, size_t expect_window_used,
     g_failure = 1;
   }
 
-  grpc_slice_unref(merged);
-  grpc_slice_unref(expect);
+  grpc_slice_unref_internal(exec_ctx, merged);
+  grpc_slice_unref_internal(exec_ctx, expect);
 }
 
-static void test_basic_headers(void) {
+static void test_basic_headers(grpc_exec_ctx *exec_ctx) {
   int i;
 
-  verify(0, 0, 0, "000005 0104 deadbeef 40 0161 0161", 1, "a", "a");
-  verify(0, 0, 0, "000001 0104 deadbeef be", 1, "a", "a");
-  verify(0, 0, 0, "000001 0104 deadbeef be", 1, "a", "a");
-  verify(0, 0, 0, "000006 0104 deadbeef be 40 0162 0163", 2, "a", "a", "b",
+  verify(exec_ctx, 0, 0, 0, "000005 0104 deadbeef 40 0161 0161", 1, "a", "a");
+  verify(exec_ctx, 0, 0, 0, "000001 0104 deadbeef be", 1, "a", "a");
+  verify(exec_ctx, 0, 0, 0, "000001 0104 deadbeef be", 1, "a", "a");
+  verify(exec_ctx, 0, 0, 0, "000006 0104 deadbeef be 40 0162 0163", 2, "a", "a",
+         "b", "c");
+  verify(exec_ctx, 0, 0, 0, "000002 0104 deadbeef bf be", 2, "a", "a", "b",
          "c");
-  verify(0, 0, 0, "000002 0104 deadbeef bf be", 2, "a", "a", "b", "c");
-  verify(0, 0, 0, "000004 0104 deadbeef 7f 00 0164", 1, "a", "d");
+  verify(exec_ctx, 0, 0, 0, "000004 0104 deadbeef 7f 00 0164", 1, "a", "d");
 
   /* flush out what's there to make a few values look very popular */
   for (i = 0; i < 350; i++) {
-    verify(0, 0, 0, "000003 0104 deadbeef c0 bf be", 3, "a", "a", "b", "c", "a",
-           "d");
+    verify(exec_ctx, 0, 0, 0, "000003 0104 deadbeef c0 bf be", 3, "a", "a", "b",
+           "c", "a", "d");
   }
 
-  verify(0, 0, 0, "000006 0104 deadbeef c0 00 016b 0176", 2, "a", "a", "k",
-         "v");
+  verify(exec_ctx, 0, 0, 0, "000006 0104 deadbeef c0 00 016b 0176", 2, "a", "a",
+         "k", "v");
   /* this could be 000004 0104 deadbeef 0f 30 0176 also */
-  verify(0, 0, 0, "000004 0104 deadbeef 0f 2f 0176", 1, "a", "v");
+  verify(exec_ctx, 0, 0, 0, "000004 0104 deadbeef 0f 2f 0176", 1, "a", "v");
 }
 
 static void encode_int_to_str(int i, char *p) {
@@ -150,7 +153,7 @@ static void encode_int_to_str(int i, char *p) {
   p[2] = 0;
 }
 
-static void test_decode_table_overflow(void) {
+static void test_decode_table_overflow(grpc_exec_ctx *exec_ctx) {
   int i;
   char key[3], value[3];
   char *expect;
@@ -173,22 +176,24 @@ static void test_decode_table_overflow(void) {
     }
 
     if (i > 0) {
-      verify(0, 0, 0, expect, 2, "aa", "ba", key, value);
+      verify(exec_ctx, 0, 0, 0, expect, 2, "aa", "ba", key, value);
     } else {
-      verify(0, 0, 0, expect, 1, key, value);
+      verify(exec_ctx, 0, 0, 0, expect, 1, key, value);
     }
     gpr_free(expect);
   }
 
   /* if the above passes, then we must have just knocked this pair out of the
      decoder stack, and so we'll be forced to re-encode it */
-  verify(0, 0, 0, "000007 0104 deadbeef 40 026161 026261", 1, "aa", "ba");
+  verify(exec_ctx, 0, 0, 0, "000007 0104 deadbeef 40 026161 026261", 1, "aa",
+         "ba");
 }
 
-static void verify_table_size_change_match_elem_size(const char *key,
+static void verify_table_size_change_match_elem_size(grpc_exec_ctx *exec_ctx,
+                                                     const char *key,
                                                      const char *value) {
   grpc_slice_buffer output;
-  grpc_mdelem *elem = grpc_mdelem_from_strings(key, value);
+  grpc_mdelem *elem = grpc_mdelem_from_strings(exec_ctx, key, value);
   size_t elem_size = grpc_mdelem_get_size_in_hpack_table(elem);
   size_t initial_table_size = g_compressor.table_size;
   grpc_linked_mdelem *e = gpr_malloc(sizeof(*e));
@@ -203,25 +208,27 @@ static void verify_table_size_change_match_elem_size(const char *key,
 
   grpc_transport_one_way_stats stats;
   memset(&stats, 0, sizeof(stats));
-  grpc_chttp2_encode_header(&g_compressor, 0xdeadbeef, &b, 0, 16384, &stats,
-                            &output);
-  grpc_slice_buffer_destroy(&output);
-  grpc_metadata_batch_destroy(&b);
+  grpc_chttp2_encode_header(exec_ctx, &g_compressor, 0xdeadbeef, &b, 0, 16384,
+                            &stats, &output);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &output);
+  grpc_metadata_batch_destroy(exec_ctx, &b);
 
   GPR_ASSERT(g_compressor.table_size == elem_size + initial_table_size);
   gpr_free(e);
 }
 
-static void test_encode_header_size(void) {
-  verify_table_size_change_match_elem_size("hello", "world");
-  verify_table_size_change_match_elem_size("hello-bin", "world");
+static void test_encode_header_size(grpc_exec_ctx *exec_ctx) {
+  verify_table_size_change_match_elem_size(exec_ctx, "hello", "world");
+  verify_table_size_change_match_elem_size(exec_ctx, "hello-bin", "world");
 }
 
-static void run_test(void (*test)(), const char *name) {
+static void run_test(void (*test)(grpc_exec_ctx *exec_ctx), const char *name) {
   gpr_log(GPR_INFO, "RUN TEST: %s", name);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_chttp2_hpack_compressor_init(&g_compressor);
-  test();
-  grpc_chttp2_hpack_compressor_destroy(&g_compressor);
+  test(&exec_ctx);
+  grpc_chttp2_hpack_compressor_destroy(&exec_ctx, &g_compressor);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 int main(int argc, char **argv) {
diff --git a/test/core/transport/chttp2/hpack_parser_fuzzer_test.c b/test/core/transport/chttp2/hpack_parser_fuzzer_test.c
index 95acbf1a6813eee2372d2b5616378524e7b3849d..4e00f49b66466472b433e86a0f4d9424add130b5 100644
--- a/test/core/transport/chttp2/hpack_parser_fuzzer_test.c
+++ b/test/core/transport/chttp2/hpack_parser_fuzzer_test.c
@@ -44,7 +44,7 @@ bool squelch = true;
 bool leak_check = true;
 
 static void onhdr(grpc_exec_ctx *exec_ctx, void *ud, grpc_mdelem *md) {
-  GRPC_MDELEM_UNREF(md);
+  GRPC_MDELEM_UNREF(exec_ctx, md);
 }
 static void dont_log(gpr_log_func_args *args) {}
 
@@ -53,13 +53,13 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   if (squelch) gpr_set_log_function(dont_log);
   grpc_init();
   grpc_chttp2_hpack_parser parser;
-  grpc_chttp2_hpack_parser_init(&parser);
-  parser.on_header = onhdr;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_chttp2_hpack_parser_init(&exec_ctx, &parser);
+  parser.on_header = onhdr;
   GRPC_ERROR_UNREF(
       grpc_chttp2_hpack_parser_parse(&exec_ctx, &parser, data, data + size));
+  grpc_chttp2_hpack_parser_destroy(&exec_ctx, &parser);
   grpc_exec_ctx_finish(&exec_ctx);
-  grpc_chttp2_hpack_parser_destroy(&parser);
   grpc_shutdown();
   return 0;
 }
diff --git a/test/core/transport/chttp2/hpack_parser_test.c b/test/core/transport/chttp2/hpack_parser_test.c
index e2813df70cf8708d1a5752001df22474180366f5..8f48849c974777ea28157d86400445965bb3307c 100644
--- a/test/core/transport/chttp2/hpack_parser_test.c
+++ b/test/core/transport/chttp2/hpack_parser_test.c
@@ -54,7 +54,7 @@ static void onhdr(grpc_exec_ctx *exec_ctx, void *ud, grpc_mdelem *md) {
   GPR_ASSERT(evalue);
   GPR_ASSERT(grpc_slice_str_cmp(md->key->slice, ekey) == 0);
   GPR_ASSERT(grpc_slice_str_cmp(md->value->slice, evalue) == 0);
-  GRPC_MDELEM_UNREF(md);
+  GRPC_MDELEM_UNREF(exec_ctx, md);
 }
 
 static void test_vector(grpc_chttp2_hpack_parser *parser,
@@ -94,8 +94,9 @@ static void test_vector(grpc_chttp2_hpack_parser *parser,
 
 static void test_vectors(grpc_slice_split_mode mode) {
   grpc_chttp2_hpack_parser parser;
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
-  grpc_chttp2_hpack_parser_init(&parser);
+  grpc_chttp2_hpack_parser_init(&exec_ctx, &parser);
   /* D.2.1 */
   test_vector(&parser, mode,
               "400a 6375 7374 6f6d 2d6b 6579 0d63 7573"
@@ -111,9 +112,9 @@ static void test_vectors(grpc_slice_split_mode mode) {
               "password", "secret", NULL);
   /* D.2.4 */
   test_vector(&parser, mode, "82", ":method", "GET", NULL);
-  grpc_chttp2_hpack_parser_destroy(&parser);
+  grpc_chttp2_hpack_parser_destroy(&exec_ctx, &parser);
 
-  grpc_chttp2_hpack_parser_init(&parser);
+  grpc_chttp2_hpack_parser_init(&exec_ctx, &parser);
   /* D.3.1 */
   test_vector(&parser, mode,
               "8286 8441 0f77 7777 2e65 7861 6d70 6c65"
@@ -131,9 +132,9 @@ static void test_vectors(grpc_slice_split_mode mode) {
               ":method", "GET", ":scheme", "https", ":path", "/index.html",
               ":authority", "www.example.com", "custom-key", "custom-value",
               NULL);
-  grpc_chttp2_hpack_parser_destroy(&parser);
+  grpc_chttp2_hpack_parser_destroy(&exec_ctx, &parser);
 
-  grpc_chttp2_hpack_parser_init(&parser);
+  grpc_chttp2_hpack_parser_init(&exec_ctx, &parser);
   /* D.4.1 */
   test_vector(&parser, mode,
               "8286 8441 8cf1 e3c2 e5f2 3a6b a0ab 90f4"
@@ -151,11 +152,11 @@ static void test_vectors(grpc_slice_split_mode mode) {
               ":method", "GET", ":scheme", "https", ":path", "/index.html",
               ":authority", "www.example.com", "custom-key", "custom-value",
               NULL);
-  grpc_chttp2_hpack_parser_destroy(&parser);
+  grpc_chttp2_hpack_parser_destroy(&exec_ctx, &parser);
 
-  grpc_chttp2_hpack_parser_init(&parser);
-  grpc_chttp2_hptbl_set_max_bytes(&parser.table, 256);
-  grpc_chttp2_hptbl_set_current_table_size(&parser.table, 256);
+  grpc_chttp2_hpack_parser_init(&exec_ctx, &parser);
+  grpc_chttp2_hptbl_set_max_bytes(&exec_ctx, &parser.table, 256);
+  grpc_chttp2_hptbl_set_current_table_size(&exec_ctx, &parser.table, 256);
   /* D.5.1 */
   test_vector(&parser, mode,
               "4803 3330 3258 0770 7269 7661 7465 611d"
@@ -185,11 +186,11 @@ static void test_vectors(grpc_slice_split_mode mode) {
               "https://www.example.com", "content-encoding", "gzip",
               "set-cookie",
               "foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; max-age=3600; version=1", NULL);
-  grpc_chttp2_hpack_parser_destroy(&parser);
+  grpc_chttp2_hpack_parser_destroy(&exec_ctx, &parser);
 
-  grpc_chttp2_hpack_parser_init(&parser);
-  grpc_chttp2_hptbl_set_max_bytes(&parser.table, 256);
-  grpc_chttp2_hptbl_set_current_table_size(&parser.table, 256);
+  grpc_chttp2_hpack_parser_init(&exec_ctx, &parser);
+  grpc_chttp2_hptbl_set_max_bytes(&exec_ctx, &parser.table, 256);
+  grpc_chttp2_hptbl_set_current_table_size(&exec_ctx, &parser.table, 256);
   /* D.6.1 */
   test_vector(&parser, mode,
               "4882 6402 5885 aec3 771a 4b61 96d0 7abe"
@@ -216,7 +217,9 @@ static void test_vectors(grpc_slice_split_mode mode) {
               "https://www.example.com", "content-encoding", "gzip",
               "set-cookie",
               "foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; max-age=3600; version=1", NULL);
-  grpc_chttp2_hpack_parser_destroy(&parser);
+  grpc_chttp2_hpack_parser_destroy(&exec_ctx, &parser);
+
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 int main(int argc, char **argv) {
diff --git a/test/core/transport/chttp2/hpack_table_test.c b/test/core/transport/chttp2/hpack_table_test.c
index 1a7e2442caa39e66ac84b40f644d06f967d4637a..ef2ad66b5ca84c3958ed483405561c13b5290c73 100644
--- a/test/core/transport/chttp2/hpack_table_test.c
+++ b/test/core/transport/chttp2/hpack_table_test.c
@@ -59,9 +59,10 @@ static void assert_index(const grpc_chttp2_hptbl *tbl, uint32_t idx,
 }
 
 static void test_static_lookup(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_chttp2_hptbl tbl;
 
-  grpc_chttp2_hptbl_init(&tbl);
+  grpc_chttp2_hptbl_init(&exec_ctx, &tbl);
 
   LOG_TEST("test_static_lookup");
   assert_index(&tbl, 1, ":authority", "");
@@ -126,7 +127,8 @@ static void test_static_lookup(void) {
   assert_index(&tbl, 60, "via", "");
   assert_index(&tbl, 61, "www-authenticate", "");
 
-  grpc_chttp2_hptbl_destroy(&tbl);
+  grpc_chttp2_hptbl_destroy(&exec_ctx, &tbl);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_many_additions(void) {
@@ -137,15 +139,16 @@ static void test_many_additions(void) {
 
   LOG_TEST("test_many_additions");
 
-  grpc_chttp2_hptbl_init(&tbl);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_chttp2_hptbl_init(&exec_ctx, &tbl);
 
   for (i = 0; i < 100000; i++) {
     grpc_mdelem *elem;
     gpr_asprintf(&key, "K:%d", i);
     gpr_asprintf(&value, "VALUE:%d", i);
-    elem = grpc_mdelem_from_strings(key, value);
-    GPR_ASSERT(grpc_chttp2_hptbl_add(&tbl, elem) == GRPC_ERROR_NONE);
-    GRPC_MDELEM_UNREF(elem);
+    elem = grpc_mdelem_from_strings(&exec_ctx, key, value);
+    GPR_ASSERT(grpc_chttp2_hptbl_add(&exec_ctx, &tbl, elem) == GRPC_ERROR_NONE);
+    GRPC_MDELEM_UNREF(&exec_ctx, elem);
     assert_index(&tbl, 1 + GRPC_CHTTP2_LAST_STATIC_ENTRY, key, value);
     gpr_free(key);
     gpr_free(value);
@@ -158,19 +161,23 @@ static void test_many_additions(void) {
     }
   }
 
-  grpc_chttp2_hptbl_destroy(&tbl);
+  grpc_chttp2_hptbl_destroy(&exec_ctx, &tbl);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static grpc_chttp2_hptbl_find_result find_simple(grpc_chttp2_hptbl *tbl,
                                                  const char *key,
                                                  const char *value) {
-  grpc_mdelem *md = grpc_mdelem_from_strings(key, value);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_mdelem *md = grpc_mdelem_from_strings(&exec_ctx, key, value);
   grpc_chttp2_hptbl_find_result r = grpc_chttp2_hptbl_find(tbl, md);
-  GRPC_MDELEM_UNREF(md);
+  GRPC_MDELEM_UNREF(&exec_ctx, md);
+  grpc_exec_ctx_finish(&exec_ctx);
   return r;
 }
 
 static void test_find(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_chttp2_hptbl tbl;
   uint32_t i;
   char buffer[32];
@@ -179,16 +186,16 @@ static void test_find(void) {
 
   LOG_TEST("test_find");
 
-  grpc_chttp2_hptbl_init(&tbl);
-  elem = grpc_mdelem_from_strings("abc", "xyz");
-  GPR_ASSERT(grpc_chttp2_hptbl_add(&tbl, elem) == GRPC_ERROR_NONE);
-  GRPC_MDELEM_UNREF(elem);
-  elem = grpc_mdelem_from_strings("abc", "123");
-  GPR_ASSERT(grpc_chttp2_hptbl_add(&tbl, elem) == GRPC_ERROR_NONE);
-  GRPC_MDELEM_UNREF(elem);
-  elem = grpc_mdelem_from_strings("x", "1");
-  GPR_ASSERT(grpc_chttp2_hptbl_add(&tbl, elem) == GRPC_ERROR_NONE);
-  GRPC_MDELEM_UNREF(elem);
+  grpc_chttp2_hptbl_init(&exec_ctx, &tbl);
+  elem = grpc_mdelem_from_strings(&exec_ctx, "abc", "xyz");
+  GPR_ASSERT(grpc_chttp2_hptbl_add(&exec_ctx, &tbl, elem) == GRPC_ERROR_NONE);
+  GRPC_MDELEM_UNREF(&exec_ctx, elem);
+  elem = grpc_mdelem_from_strings(&exec_ctx, "abc", "123");
+  GPR_ASSERT(grpc_chttp2_hptbl_add(&exec_ctx, &tbl, elem) == GRPC_ERROR_NONE);
+  GRPC_MDELEM_UNREF(&exec_ctx, elem);
+  elem = grpc_mdelem_from_strings(&exec_ctx, "x", "1");
+  GPR_ASSERT(grpc_chttp2_hptbl_add(&exec_ctx, &tbl, elem) == GRPC_ERROR_NONE);
+  GRPC_MDELEM_UNREF(&exec_ctx, elem);
 
   r = find_simple(&tbl, "abc", "123");
   GPR_ASSERT(r.index == 2 + GRPC_CHTTP2_LAST_STATIC_ENTRY);
@@ -237,9 +244,9 @@ static void test_find(void) {
   /* overflow the string buffer, check find still works */
   for (i = 0; i < 10000; i++) {
     int64_ttoa(i, buffer);
-    elem = grpc_mdelem_from_strings("test", buffer);
-    GPR_ASSERT(grpc_chttp2_hptbl_add(&tbl, elem) == GRPC_ERROR_NONE);
-    GRPC_MDELEM_UNREF(elem);
+    elem = grpc_mdelem_from_strings(&exec_ctx, "test", buffer);
+    GPR_ASSERT(grpc_chttp2_hptbl_add(&exec_ctx, &tbl, elem) == GRPC_ERROR_NONE);
+    GRPC_MDELEM_UNREF(&exec_ctx, elem);
   }
 
   r = find_simple(&tbl, "abc", "123");
@@ -267,7 +274,8 @@ static void test_find(void) {
   GPR_ASSERT(r.index != 0);
   GPR_ASSERT(r.has_value == 0);
 
-  grpc_chttp2_hptbl_destroy(&tbl);
+  grpc_chttp2_hptbl_destroy(&exec_ctx, &tbl);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 int main(int argc, char **argv) {
diff --git a/test/core/transport/connectivity_state_test.c b/test/core/transport/connectivity_state_test.c
index 1050059eff7b9dcae984e53f0a13b87bacfaf50b..3520ef0a80de24fab332da568e507f11e3954fcc 100644
--- a/test/core/transport/connectivity_state_test.c
+++ b/test/core/transport/connectivity_state_test.c
@@ -86,7 +86,8 @@ static void test_check(void) {
 
 static void test_subscribe_then_unsubscribe(void) {
   grpc_connectivity_state_tracker tracker;
-  grpc_closure *closure = grpc_closure_create(must_fail, THE_ARG);
+  grpc_closure *closure =
+      grpc_closure_create(must_fail, THE_ARG, grpc_schedule_on_exec_ctx);
   grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   gpr_log(GPR_DEBUG, "test_subscribe_then_unsubscribe");
@@ -109,7 +110,8 @@ static void test_subscribe_then_unsubscribe(void) {
 
 static void test_subscribe_then_destroy(void) {
   grpc_connectivity_state_tracker tracker;
-  grpc_closure *closure = grpc_closure_create(must_succeed, THE_ARG);
+  grpc_closure *closure =
+      grpc_closure_create(must_succeed, THE_ARG, grpc_schedule_on_exec_ctx);
   grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   gpr_log(GPR_DEBUG, "test_subscribe_then_destroy");
@@ -128,7 +130,8 @@ static void test_subscribe_then_destroy(void) {
 
 static void test_subscribe_with_failure_then_destroy(void) {
   grpc_connectivity_state_tracker tracker;
-  grpc_closure *closure = grpc_closure_create(must_fail, THE_ARG);
+  grpc_closure *closure =
+      grpc_closure_create(must_fail, THE_ARG, grpc_schedule_on_exec_ctx);
   grpc_connectivity_state state = GRPC_CHANNEL_SHUTDOWN;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   gpr_log(GPR_DEBUG, "test_subscribe_with_failure_then_destroy");
diff --git a/test/core/transport/metadata_test.c b/test/core/transport/metadata_test.c
index 5c89d8530ad6c4e7c25493f4055929dedb2ad81c..3625043d0774e986d0f1b6f9a81e174f28c62e7f 100644
--- a/test/core/transport/metadata_test.c
+++ b/test/core/transport/metadata_test.c
@@ -42,6 +42,7 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "test/core/util/test_config.h"
@@ -63,6 +64,7 @@ static void test_create_string(void) {
   LOG_TEST("test_create_string");
 
   grpc_init();
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   s1 = grpc_mdstr_from_string("hello");
   s2 = grpc_mdstr_from_string("hello");
   s3 = grpc_mdstr_from_string("very much not hello");
@@ -70,9 +72,10 @@ static void test_create_string(void) {
   GPR_ASSERT(s3 != s1);
   GPR_ASSERT(grpc_slice_str_cmp(s1->slice, "hello") == 0);
   GPR_ASSERT(grpc_slice_str_cmp(s3->slice, "very much not hello") == 0);
-  GRPC_MDSTR_UNREF(s1);
-  GRPC_MDSTR_UNREF(s2);
-  GRPC_MDSTR_UNREF(s3);
+  GRPC_MDSTR_UNREF(&exec_ctx, s1);
+  GRPC_MDSTR_UNREF(&exec_ctx, s2);
+  GRPC_MDSTR_UNREF(&exec_ctx, s3);
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
 }
 
@@ -82,9 +85,10 @@ static void test_create_metadata(void) {
   LOG_TEST("test_create_metadata");
 
   grpc_init();
-  m1 = grpc_mdelem_from_strings("a", "b");
-  m2 = grpc_mdelem_from_strings("a", "b");
-  m3 = grpc_mdelem_from_strings("a", "c");
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  m1 = grpc_mdelem_from_strings(&exec_ctx, "a", "b");
+  m2 = grpc_mdelem_from_strings(&exec_ctx, "a", "b");
+  m3 = grpc_mdelem_from_strings(&exec_ctx, "a", "c");
   GPR_ASSERT(m1 == m2);
   GPR_ASSERT(m3 != m1);
   GPR_ASSERT(m3->key == m1->key);
@@ -92,9 +96,10 @@ static void test_create_metadata(void) {
   GPR_ASSERT(grpc_slice_str_cmp(m1->key->slice, "a") == 0);
   GPR_ASSERT(grpc_slice_str_cmp(m1->value->slice, "b") == 0);
   GPR_ASSERT(grpc_slice_str_cmp(m3->value->slice, "c") == 0);
-  GRPC_MDELEM_UNREF(m1);
-  GRPC_MDELEM_UNREF(m2);
-  GRPC_MDELEM_UNREF(m3);
+  GRPC_MDELEM_UNREF(&exec_ctx, m1);
+  GRPC_MDELEM_UNREF(&exec_ctx, m2);
+  GRPC_MDELEM_UNREF(&exec_ctx, m3);
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
 }
 
@@ -105,11 +110,14 @@ static void test_create_many_ephemeral_metadata(void) {
   LOG_TEST("test_create_many_ephemeral_metadata");
 
   grpc_init();
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   /* add, and immediately delete a bunch of different elements */
   for (i = 0; i < MANY; i++) {
     gpr_ltoa(i, buffer);
-    GRPC_MDELEM_UNREF(grpc_mdelem_from_strings("a", buffer));
+    GRPC_MDELEM_UNREF(&exec_ctx,
+                      grpc_mdelem_from_strings(&exec_ctx, "a", buffer));
   }
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
 }
 
@@ -122,22 +130,24 @@ static void test_create_many_persistant_metadata(void) {
   LOG_TEST("test_create_many_persistant_metadata");
 
   grpc_init();
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   /* add phase */
   for (i = 0; i < MANY; i++) {
     gpr_ltoa(i, buffer);
-    created[i] = grpc_mdelem_from_strings("a", buffer);
+    created[i] = grpc_mdelem_from_strings(&exec_ctx, "a", buffer);
   }
   /* verify phase */
   for (i = 0; i < MANY; i++) {
     gpr_ltoa(i, buffer);
-    md = grpc_mdelem_from_strings("a", buffer);
+    md = grpc_mdelem_from_strings(&exec_ctx, "a", buffer);
     GPR_ASSERT(md == created[i]);
-    GRPC_MDELEM_UNREF(md);
+    GRPC_MDELEM_UNREF(&exec_ctx, md);
   }
   /* cleanup phase */
   for (i = 0; i < MANY; i++) {
-    GRPC_MDELEM_UNREF(created[i]);
+    GRPC_MDELEM_UNREF(&exec_ctx, created[i]);
   }
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
 
   gpr_free(created);
@@ -147,9 +157,11 @@ static void test_spin_creating_the_same_thing(void) {
   LOG_TEST("test_spin_creating_the_same_thing");
 
   grpc_init();
-  GRPC_MDELEM_UNREF(grpc_mdelem_from_strings("a", "b"));
-  GRPC_MDELEM_UNREF(grpc_mdelem_from_strings("a", "b"));
-  GRPC_MDELEM_UNREF(grpc_mdelem_from_strings("a", "b"));
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GRPC_MDELEM_UNREF(&exec_ctx, grpc_mdelem_from_strings(&exec_ctx, "a", "b"));
+  GRPC_MDELEM_UNREF(&exec_ctx, grpc_mdelem_from_strings(&exec_ctx, "a", "b"));
+  GRPC_MDELEM_UNREF(&exec_ctx, grpc_mdelem_from_strings(&exec_ctx, "a", "b"));
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
 }
 
@@ -164,6 +176,7 @@ static void test_things_stick_around(void) {
   LOG_TEST("test_things_stick_around");
 
   grpc_init();
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   for (i = 0; i < nstrs; i++) {
     gpr_asprintf(&buffer, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx%" PRIuPTR "x", i);
@@ -174,7 +187,7 @@ static void test_things_stick_around(void) {
 
   for (i = 0; i < nstrs; i++) {
     GRPC_MDSTR_REF(strs[i]);
-    GRPC_MDSTR_UNREF(strs[i]);
+    GRPC_MDSTR_UNREF(&exec_ctx, strs[i]);
   }
 
   for (i = 0; i < nstrs; i++) {
@@ -186,17 +199,18 @@ static void test_things_stick_around(void) {
   }
 
   for (i = 0; i < nstrs; i++) {
-    GRPC_MDSTR_UNREF(strs[shuf[i]]);
+    GRPC_MDSTR_UNREF(&exec_ctx, strs[shuf[i]]);
     for (j = i + 1; j < nstrs; j++) {
       gpr_asprintf(&buffer, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx%" PRIuPTR "x",
                    shuf[j]);
       test = grpc_mdstr_from_string(buffer);
       GPR_ASSERT(test == strs[shuf[j]]);
-      GRPC_MDSTR_UNREF(test);
+      GRPC_MDSTR_UNREF(&exec_ctx, test);
       gpr_free(buffer);
     }
   }
 
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
   gpr_free(strs);
   gpr_free(shuf);
@@ -210,19 +224,21 @@ static void test_slices_work(void) {
   LOG_TEST("test_slices_work");
 
   grpc_init();
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   str = grpc_mdstr_from_string(
       "123456789012345678901234567890123456789012345678901234567890");
   slice = grpc_slice_ref(str->slice);
-  GRPC_MDSTR_UNREF(str);
-  grpc_slice_unref(slice);
+  GRPC_MDSTR_UNREF(&exec_ctx, str);
+  grpc_slice_unref_internal(&exec_ctx, slice);
 
   str = grpc_mdstr_from_string(
       "123456789012345678901234567890123456789012345678901234567890");
   slice = grpc_slice_ref(str->slice);
-  grpc_slice_unref(slice);
-  GRPC_MDSTR_UNREF(str);
+  grpc_slice_unref_internal(&exec_ctx, slice);
+  GRPC_MDSTR_UNREF(&exec_ctx, str);
 
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
 }
 
@@ -234,13 +250,15 @@ static void test_base64_and_huffman_works(void) {
   LOG_TEST("test_base64_and_huffman_works");
 
   grpc_init();
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   str = grpc_mdstr_from_string("abcdefg");
   slice1 = grpc_mdstr_as_base64_encoded_and_huffman_compressed(str);
   slice2 = grpc_chttp2_base64_encode_and_huffman_compress(str->slice);
   GPR_ASSERT(0 == grpc_slice_cmp(slice1, slice2));
 
-  grpc_slice_unref(slice2);
-  GRPC_MDSTR_UNREF(str);
+  grpc_slice_unref_internal(&exec_ctx, slice2);
+  GRPC_MDSTR_UNREF(&exec_ctx, str);
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
 }
 
@@ -251,29 +269,33 @@ static void test_user_data_works(void) {
   LOG_TEST("test_user_data_works");
 
   grpc_init();
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   ud1 = gpr_malloc(sizeof(int));
   *ud1 = 1;
   ud2 = gpr_malloc(sizeof(int));
   *ud2 = 2;
-  md = grpc_mdelem_from_strings("abc", "123");
+  md = grpc_mdelem_from_strings(&exec_ctx, "abc", "123");
   grpc_mdelem_set_user_data(md, gpr_free, ud1);
   grpc_mdelem_set_user_data(md, gpr_free, ud2);
   GPR_ASSERT(grpc_mdelem_get_user_data(md, gpr_free) == ud1);
-  GRPC_MDELEM_UNREF(md);
+  GRPC_MDELEM_UNREF(&exec_ctx, md);
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
 }
 
-static void verify_ascii_header_size(const char *key, const char *value) {
-  grpc_mdelem *elem = grpc_mdelem_from_strings(key, value);
+static void verify_ascii_header_size(grpc_exec_ctx *exec_ctx, const char *key,
+                                     const char *value) {
+  grpc_mdelem *elem = grpc_mdelem_from_strings(exec_ctx, key, value);
   size_t elem_size = grpc_mdelem_get_size_in_hpack_table(elem);
   size_t expected_size = 32 + strlen(key) + strlen(value);
   GPR_ASSERT(expected_size == elem_size);
-  GRPC_MDELEM_UNREF(elem);
+  GRPC_MDELEM_UNREF(exec_ctx, elem);
 }
 
-static void verify_binary_header_size(const char *key, const uint8_t *value,
-                                      size_t value_len) {
-  grpc_mdelem *elem = grpc_mdelem_from_string_and_buffer(key, value, value_len);
+static void verify_binary_header_size(grpc_exec_ctx *exec_ctx, const char *key,
+                                      const uint8_t *value, size_t value_len) {
+  grpc_mdelem *elem =
+      grpc_mdelem_from_string_and_buffer(exec_ctx, key, value, value_len);
   GPR_ASSERT(grpc_is_binary_header(key, strlen(key)));
   size_t elem_size = grpc_mdelem_get_size_in_hpack_table(elem);
   grpc_slice value_slice =
@@ -281,33 +303,37 @@ static void verify_binary_header_size(const char *key, const uint8_t *value,
   grpc_slice base64_encoded = grpc_chttp2_base64_encode(value_slice);
   size_t expected_size = 32 + strlen(key) + GRPC_SLICE_LENGTH(base64_encoded);
   GPR_ASSERT(expected_size == elem_size);
-  grpc_slice_unref(value_slice);
-  grpc_slice_unref(base64_encoded);
-  GRPC_MDELEM_UNREF(elem);
+  grpc_slice_unref_internal(exec_ctx, value_slice);
+  grpc_slice_unref_internal(exec_ctx, base64_encoded);
+  GRPC_MDELEM_UNREF(exec_ctx, elem);
 }
 
 #define BUFFER_SIZE 64
 static void test_mdelem_sizes_in_hpack(void) {
   LOG_TEST("test_mdelem_size");
   grpc_init();
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   uint8_t binary_value[BUFFER_SIZE] = {0};
   for (uint8_t i = 0; i < BUFFER_SIZE; i++) {
     binary_value[i] = i;
   }
 
-  verify_ascii_header_size("hello", "world");
-  verify_ascii_header_size("hello", "worldxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
-  verify_ascii_header_size(":scheme", "http");
+  verify_ascii_header_size(&exec_ctx, "hello", "world");
+  verify_ascii_header_size(&exec_ctx, "hello",
+                           "worldxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
+  verify_ascii_header_size(&exec_ctx, ":scheme", "http");
 
   for (uint8_t i = 0; i < BUFFER_SIZE; i++) {
-    verify_binary_header_size("hello-bin", binary_value, i);
+    verify_binary_header_size(&exec_ctx, "hello-bin", binary_value, i);
   }
 
   const char *static_metadata = grpc_static_metadata_strings[0];
   memcpy(binary_value, static_metadata, strlen(static_metadata));
-  verify_binary_header_size("hello-bin", binary_value, strlen(static_metadata));
+  verify_binary_header_size(&exec_ctx, "hello-bin", binary_value,
+                            strlen(static_metadata));
 
+  grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
 }
 
diff --git a/test/core/util/BUILD b/test/core/util/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..8769683b23a468c941305d298fd4b4aeb227f2e1
--- /dev/null
+++ b/test/core/util/BUILD
@@ -0,0 +1,87 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_library(
+    name = "gpr_test_util",
+    srcs = [
+        "test_config.c",
+        "memory_counters.c",
+    ],
+    hdrs = [
+        "test_config.h",
+        "memory_counters.h",
+    ],
+    deps = ["//:gpr"],
+    visibility = ["//:__subpackages__"],
+)
+
+cc_library(
+    name = "grpc_test_util",
+    srcs = [
+        "grpc_profiler.c",
+        "mock_endpoint.c",
+        "parse_hexstring.c",
+        "passthru_endpoint.c",
+        "port_posix.c",
+        "port_server_client.c",
+        "port_windows.c",
+        "reconnect_server.c",
+        "slice_splitter.c",
+        "test_tcp_server.c",
+    ],
+    hdrs = [
+        "grpc_profiler.h",
+        "mock_endpoint.h",
+        "parse_hexstring.h",
+        "passthru_endpoint.h",
+        "port.h",
+        "port_server_client.h",
+        "reconnect_server.h",
+        "slice_splitter.h",
+        "test_tcp_server.h",
+    ],
+    deps = [":gpr_test_util", "//:grpc"],
+    visibility = ["//test:__subpackages__"],
+    copts = ["-std=c99"],
+)
+
+cc_library(
+  name = "one_corpus_entry_fuzzer",
+  srcs = ["one_corpus_entry_fuzzer.c"],
+  deps = [":gpr_test_util", "//:grpc"],
+  visibility = ["//test:__subpackages__"],
+)
+
+sh_library(
+  name = "fuzzer_one_entry_runner",
+  srcs = ["fuzzer_one_entry_runner.sh"],
+  visibility = ["//test:__subpackages__"],
+)
diff --git a/test/core/util/fuzzer_one_entry_runner.sh b/test/core/util/fuzzer_one_entry_runner.sh
new file mode 100755
index 0000000000000000000000000000000000000000..a0558a9c09e2b52c2943476f5658c9834228cec0
--- /dev/null
+++ b/test/core/util/fuzzer_one_entry_runner.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+# Test runner for fuzzer tests from bazel
+
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+$1 $2
diff --git a/test/core/util/grpc_fuzzer.bzl b/test/core/util/grpc_fuzzer.bzl
new file mode 100644
index 0000000000000000000000000000000000000000..2f552a9fdb093c146c360f3bfb286c9de6cebcde
--- /dev/null
+++ b/test/core/util/grpc_fuzzer.bzl
@@ -0,0 +1,43 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+def grpc_fuzzer(name, corpus, srcs = [], deps = [], **kwargs):
+  native.cc_binary(
+    name = '%s/one_entry.bin' % name,
+    srcs = srcs,
+    deps = deps + ["//test/core/util:one_corpus_entry_fuzzer"],
+    **kwargs
+  )
+  for entry in native.glob(['%s/*' % corpus]):
+    native.sh_test(
+      name = '%s/one_entry/%s' % (name, entry),
+      data = [':%s/one_entry.bin' % name, entry],
+      srcs = ['//test/core/util:fuzzer_one_entry_runner'],
+      args = ['$(location :%s/one_entry.bin)' % name, '$(location %s)' % entry]
+    )
diff --git a/test/core/util/memory_counters.h b/test/core/util/memory_counters.h
index f33281650147fc77d7ec64191dc819c705c906b9..b9b2b3adda5dcad3140d87640b557830013cd648 100644
--- a/test/core/util/memory_counters.h
+++ b/test/core/util/memory_counters.h
@@ -34,6 +34,8 @@
 #ifndef GRPC_TEST_CORE_UTIL_MEMORY_COUNTERS_H
 #define GRPC_TEST_CORE_UTIL_MEMORY_COUNTERS_H
 
+#include <stddef.h>
+
 struct grpc_memory_counters {
   size_t total_size_relative;
   size_t total_size_absolute;
diff --git a/test/core/util/mock_endpoint.c b/test/core/util/mock_endpoint.c
index bf6d85252a97ebdeafecb88ee81dc8caa4ab9847..04793bceabe28aa1882db5ca9fceff81b1648474 100644
--- a/test/core/util/mock_endpoint.c
+++ b/test/core/util/mock_endpoint.c
@@ -55,7 +55,7 @@ static void me_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   gpr_mu_lock(&m->mu);
   if (m->read_buffer.count > 0) {
     grpc_slice_buffer_swap(&m->read_buffer, slices);
-    grpc_exec_ctx_sched(exec_ctx, cb, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, cb, GRPC_ERROR_NONE);
   } else {
     m->on_read = cb;
     m->on_read_out = slices;
@@ -69,7 +69,7 @@ static void me_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   for (size_t i = 0; i < slices->count; i++) {
     m->on_write(slices->slices[i]);
   }
-  grpc_exec_ctx_sched(exec_ctx, cb, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, cb, GRPC_ERROR_NONE);
 }
 
 static void me_add_to_pollset(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
@@ -82,8 +82,8 @@ static void me_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
   grpc_mock_endpoint *m = (grpc_mock_endpoint *)ep;
   gpr_mu_lock(&m->mu);
   if (m->on_read) {
-    grpc_exec_ctx_sched(exec_ctx, m->on_read,
-                        GRPC_ERROR_CREATE("Endpoint Shutdown"), NULL);
+    grpc_closure_sched(exec_ctx, m->on_read,
+                       GRPC_ERROR_CREATE("Endpoint Shutdown"));
     m->on_read = NULL;
   }
   gpr_mu_unlock(&m->mu);
@@ -144,7 +144,7 @@ void grpc_mock_endpoint_put_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   gpr_mu_lock(&m->mu);
   if (m->on_read != NULL) {
     grpc_slice_buffer_add(m->on_read_out, slice);
-    grpc_exec_ctx_sched(exec_ctx, m->on_read, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, m->on_read, GRPC_ERROR_NONE);
     m->on_read = NULL;
   } else {
     grpc_slice_buffer_add(&m->read_buffer, slice);
diff --git a/test/core/util/passthru_endpoint.c b/test/core/util/passthru_endpoint.c
index b3405f02e9f89d63b9ed7de71d88676b874c63c4..d42ec7f9e8cb3e46be8a2665ceee8e497747d71e 100644
--- a/test/core/util/passthru_endpoint.c
+++ b/test/core/util/passthru_endpoint.c
@@ -39,6 +39,8 @@
 #include <grpc/support/string_util.h>
 #include "src/core/lib/iomgr/sockaddr.h"
 
+#include "src/core/lib/slice/slice_internal.h"
+
 typedef struct passthru_endpoint passthru_endpoint;
 
 typedef struct {
@@ -63,11 +65,10 @@ static void me_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   half *m = (half *)ep;
   gpr_mu_lock(&m->parent->mu);
   if (m->parent->shutdown) {
-    grpc_exec_ctx_sched(exec_ctx, cb, GRPC_ERROR_CREATE("Already shutdown"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, cb, GRPC_ERROR_CREATE("Already shutdown"));
   } else if (m->read_buffer.count > 0) {
     grpc_slice_buffer_swap(&m->read_buffer, slices);
-    grpc_exec_ctx_sched(exec_ctx, cb, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, cb, GRPC_ERROR_NONE);
   } else {
     m->on_read = cb;
     m->on_read_out = slices;
@@ -91,7 +92,7 @@ static void me_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
     for (size_t i = 0; i < slices->count; i++) {
       grpc_slice_buffer_add(m->on_read_out, grpc_slice_ref(slices->slices[i]));
     }
-    grpc_exec_ctx_sched(exec_ctx, m->on_read, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, m->on_read, GRPC_ERROR_NONE);
     m->on_read = NULL;
   } else {
     for (size_t i = 0; i < slices->count; i++) {
@@ -99,7 +100,7 @@ static void me_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
     }
   }
   gpr_mu_unlock(&m->parent->mu);
-  grpc_exec_ctx_sched(exec_ctx, cb, error, NULL);
+  grpc_closure_sched(exec_ctx, cb, error);
 }
 
 static void me_add_to_pollset(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
@@ -113,14 +114,12 @@ static void me_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
   gpr_mu_lock(&m->parent->mu);
   m->parent->shutdown = true;
   if (m->on_read) {
-    grpc_exec_ctx_sched(exec_ctx, m->on_read, GRPC_ERROR_CREATE("Shutdown"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, m->on_read, GRPC_ERROR_CREATE("Shutdown"));
     m->on_read = NULL;
   }
   m = other_half(m);
   if (m->on_read) {
-    grpc_exec_ctx_sched(exec_ctx, m->on_read, GRPC_ERROR_CREATE("Shutdown"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, m->on_read, GRPC_ERROR_CREATE("Shutdown"));
     m->on_read = NULL;
   }
   gpr_mu_unlock(&m->parent->mu);
@@ -133,8 +132,8 @@ static void me_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
   if (0 == --p->halves) {
     gpr_mu_unlock(&p->mu);
     gpr_mu_destroy(&p->mu);
-    grpc_slice_buffer_destroy(&p->client.read_buffer);
-    grpc_slice_buffer_destroy(&p->server.read_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &p->client.read_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &p->server.read_buffer);
     grpc_resource_user_unref(exec_ctx, p->client.resource_user);
     grpc_resource_user_unref(exec_ctx, p->server.resource_user);
     gpr_free(p);
diff --git a/test/core/util/port_server_client.c b/test/core/util/port_server_client.c
index b2342feeb4097158aa8f000bbce568bdef6a2324..4baf63dcd7c27ef2c073ab3edd91fe0a39d08143 100644
--- a/test/core/util/port_server_client.c
+++ b/test/core/util/port_server_client.c
@@ -92,7 +92,8 @@ void grpc_free_port_using_server(char *server, int port) {
   grpc_pollset *pollset = gpr_malloc(grpc_pollset_size());
   grpc_pollset_init(pollset, &pr.mu);
   pr.pops = grpc_polling_entity_create_from_pollset(pollset);
-  shutdown_closure = grpc_closure_create(destroy_pops_and_shutdown, &pr.pops);
+  shutdown_closure = grpc_closure_create(destroy_pops_and_shutdown, &pr.pops,
+                                         grpc_schedule_on_exec_ctx);
 
   req.host = server;
   gpr_asprintf(&path, "/drop/%d", port);
@@ -103,8 +104,10 @@ void grpc_free_port_using_server(char *server, int port) {
       grpc_resource_quota_create("port_server_client/free");
   grpc_httpcli_get(&exec_ctx, &context, &pr.pops, resource_quota, &req,
                    GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10),
-                   grpc_closure_create(freed_port_from_server, &pr), &rsp);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+                   grpc_closure_create(freed_port_from_server, &pr,
+                                       grpc_schedule_on_exec_ctx),
+                   &rsp);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   gpr_mu_lock(pr.mu);
   while (!pr.done) {
     grpc_pollset_worker *worker = NULL;
@@ -174,9 +177,10 @@ static void got_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
         grpc_resource_quota_create("port_server_client/pick_retry");
     grpc_httpcli_get(exec_ctx, pr->ctx, &pr->pops, resource_quota, &req,
                      GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10),
-                     grpc_closure_create(got_port_from_server, pr),
+                     grpc_closure_create(got_port_from_server, pr,
+                                         grpc_schedule_on_exec_ctx),
                      &pr->response);
-    grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
+    grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
     return;
   }
   GPR_ASSERT(response);
@@ -208,7 +212,8 @@ int grpc_pick_port_using_server(char *server) {
   grpc_pollset *pollset = gpr_malloc(grpc_pollset_size());
   grpc_pollset_init(pollset, &pr.mu);
   pr.pops = grpc_polling_entity_create_from_pollset(pollset);
-  shutdown_closure = grpc_closure_create(destroy_pops_and_shutdown, &pr.pops);
+  shutdown_closure = grpc_closure_create(destroy_pops_and_shutdown, &pr.pops,
+                                         grpc_schedule_on_exec_ctx);
   pr.port = -1;
   pr.server = server;
   pr.ctx = &context;
@@ -219,11 +224,12 @@ int grpc_pick_port_using_server(char *server) {
   grpc_httpcli_context_init(&context);
   grpc_resource_quota *resource_quota =
       grpc_resource_quota_create("port_server_client/pick");
-  grpc_httpcli_get(&exec_ctx, &context, &pr.pops, resource_quota, &req,
-                   GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10),
-                   grpc_closure_create(got_port_from_server, &pr),
-                   &pr.response);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_httpcli_get(
+      &exec_ctx, &context, &pr.pops, resource_quota, &req,
+      GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10),
+      grpc_closure_create(got_port_from_server, &pr, grpc_schedule_on_exec_ctx),
+      &pr.response);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
   grpc_exec_ctx_finish(&exec_ctx);
   gpr_mu_lock(pr.mu);
   while (pr.port == -1) {
diff --git a/test/core/util/test_tcp_server.c b/test/core/util/test_tcp_server.c
index 16df91d96882d11174faa3c9370af186abf44e96..2338b81ab18364414d705e1ab051a471c3a410e7 100644
--- a/test/core/util/test_tcp_server.c
+++ b/test/core/util/test_tcp_server.c
@@ -57,7 +57,8 @@ void test_tcp_server_init(test_tcp_server *server,
                           grpc_tcp_server_cb on_connect, void *user_data) {
   grpc_init();
   server->tcp_server = NULL;
-  grpc_closure_init(&server->shutdown_complete, on_server_destroyed, server);
+  grpc_closure_init(&server->shutdown_complete, on_server_destroyed, server,
+                    grpc_schedule_on_exec_ctx);
   server->shutdown = 0;
   server->pollset = gpr_malloc(grpc_pollset_size());
   grpc_pollset_init(server->pollset, &server->mu);
@@ -111,7 +112,8 @@ void test_tcp_server_destroy(test_tcp_server *server) {
   gpr_timespec shutdown_deadline;
   grpc_closure do_nothing_cb;
   grpc_tcp_server_unref(&exec_ctx, server->tcp_server);
-  grpc_closure_init(&do_nothing_cb, do_nothing, NULL);
+  grpc_closure_init(&do_nothing_cb, do_nothing, NULL,
+                    grpc_schedule_on_exec_ctx);
   shutdown_deadline = gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
                                    gpr_time_from_seconds(5, GPR_TIMESPAN));
   while (!server->shutdown &&
diff --git a/test/cpp/common/channel_arguments_test.cc b/test/cpp/common/channel_arguments_test.cc
index 60d3215265f075b1a72e45a19acea901092a54f1..190d32ce060b4c9c6af0d10c82d12df8362b54d8 100644
--- a/test/cpp/common/channel_arguments_test.cc
+++ b/test/cpp/common/channel_arguments_test.cc
@@ -37,7 +37,11 @@
 #include <grpc/grpc.h>
 #include <grpc/support/useful.h>
 #include <gtest/gtest.h>
+
+extern "C" {
+#include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/iomgr/socket_mutator.h"
+}
 
 namespace grpc {
 namespace testing {
@@ -228,7 +232,11 @@ TEST_F(ChannelArgumentsTest, SetSocketMutator) {
   EXPECT_FALSE(HasArg(arg0));
 
   // arg0 is destroyed by grpc_socket_mutator_to_arg(mutator1)
-  arg1.value.pointer.vtable->destroy(arg1.value.pointer.p);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    arg1.value.pointer.vtable->destroy(&exec_ctx, arg1.value.pointer.p);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 }
 
 TEST_F(ChannelArgumentsTest, SetUserAgentPrefix) {
diff --git a/test/cpp/common/channel_filter_test.cc b/test/cpp/common/channel_filter_test.cc
index 600a953d828fb04fee7340497616124a46719b09..32246a4b765df895501d5728fd8b08f791a4978f 100644
--- a/test/cpp/common/channel_filter_test.cc
+++ b/test/cpp/common/channel_filter_test.cc
@@ -41,14 +41,24 @@ namespace testing {
 
 class MyChannelData : public ChannelData {
  public:
-  MyChannelData(const grpc_channel_args& args, const char* peer)
-      : ChannelData(args, peer) {}
+  MyChannelData() {}
+
+  grpc_error* Init(grpc_exec_ctx* exec_ctx,
+                   grpc_channel_element_args* args) override {
+    (void)args->channel_args;  // Make sure field is available.
+    return GRPC_ERROR_NONE;
+  }
 };
 
 class MyCallData : public CallData {
  public:
-  explicit MyCallData(const ChannelData& channel_data)
-      : CallData(channel_data) {}
+  MyCallData() {}
+
+  grpc_error* Init(grpc_exec_ctx* exec_ctx, ChannelData* channel_data,
+                   grpc_call_element_args* args) override {
+    (void)args->path;  // Make sure field is available.
+    return GRPC_ERROR_NONE;
+  }
 };
 
 // This test ensures that when we make changes to the filter API in
diff --git a/test/cpp/end2end/async_end2end_test.cc b/test/cpp/end2end/async_end2end_test.cc
index 8e385d100c16f37b770e120149e8a6401c64ff19..2ce3f2f7bd9e3e07215ae3c05a3d3f9e23699dbe 100644
--- a/test/cpp/end2end/async_end2end_test.cc
+++ b/test/cpp/end2end/async_end2end_test.cc
@@ -254,7 +254,8 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<TestScenario> {
 
     // Setup server
     ServerBuilder builder;
-    auto server_creds = GetServerCredentials(GetParam().credentials_type);
+    auto server_creds = GetCredentialsProvider()->GetServerCredentials(
+        GetParam().credentials_type);
     builder.AddListeningPort(server_address_.str(), server_creds);
     builder.RegisterService(&service_);
     cq_ = builder.AddCompletionQueue();
@@ -283,8 +284,8 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<TestScenario> {
 
   void ResetStub() {
     ChannelArguments args;
-    auto channel_creds =
-        GetChannelCredentials(GetParam().credentials_type, &args);
+    auto channel_creds = GetCredentialsProvider()->GetChannelCredentials(
+        GetParam().credentials_type, &args);
     std::shared_ptr<Channel> channel =
         CreateCustomChannel(server_address_.str(), channel_creds, args);
     stub_ = grpc::testing::EchoTestService::NewStub(channel);
@@ -892,8 +893,8 @@ TEST_P(AsyncEnd2endTest, ServerCheckDone) {
 
 TEST_P(AsyncEnd2endTest, UnimplementedRpc) {
   ChannelArguments args;
-  auto channel_creds =
-      GetChannelCredentials(GetParam().credentials_type, &args);
+  auto channel_creds = GetCredentialsProvider()->GetChannelCredentials(
+      GetParam().credentials_type, &args);
   std::shared_ptr<Channel> channel =
       CreateCustomChannel(server_address_.str(), channel_creds, args);
   std::unique_ptr<grpc::testing::UnimplementedEchoService::Stub> stub;
@@ -1404,11 +1405,15 @@ std::vector<TestScenario> CreateTestScenarios(bool test_disable_blocking,
   std::vector<grpc::string> credentials_types;
   std::vector<grpc::string> messages;
 
-  credentials_types.push_back(kInsecureCredentialsType);
-  auto sec_list = GetSecureCredentialsTypeList();
+  if (GetCredentialsProvider()->GetChannelCredentials(kInsecureCredentialsType,
+                                                      nullptr) != nullptr) {
+    credentials_types.push_back(kInsecureCredentialsType);
+  }
+  auto sec_list = GetCredentialsProvider()->GetSecureCredentialsTypeList();
   for (auto sec = sec_list.begin(); sec != sec_list.end(); sec++) {
     credentials_types.push_back(*sec);
   }
+  GPR_ASSERT(!credentials_types.empty());
 
   messages.push_back("Hello");
   for (int sz = 1; sz < test_big_limit; sz *= 2) {
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 9bb892c694bbd809b97eb80e51627b91f2dbea60..1a1a94e87c74ffe43eaaad71cb7b71a83d80ea5f 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -242,7 +242,8 @@ class End2endTest : public ::testing::TestWithParam<TestScenario> {
     // Setup server
     ServerBuilder builder;
     ConfigureServerBuilder(&builder);
-    auto server_creds = GetServerCredentials(GetParam().credentials_type);
+    auto server_creds = GetCredentialsProvider()->GetServerCredentials(
+        GetParam().credentials_type);
     if (GetParam().credentials_type != kInsecureCredentialsType) {
       server_creds->SetAuthMetadataProcessor(processor);
     }
@@ -270,8 +271,8 @@ class End2endTest : public ::testing::TestWithParam<TestScenario> {
     }
     EXPECT_TRUE(is_server_started_);
     ChannelArguments args;
-    auto channel_creds =
-        GetChannelCredentials(GetParam().credentials_type, &args);
+    auto channel_creds = GetCredentialsProvider()->GetChannelCredentials(
+        GetParam().credentials_type, &args);
     if (!user_agent_prefix_.empty()) {
       args.SetUserAgentPrefix(user_agent_prefix_);
     }
@@ -1520,11 +1521,18 @@ std::vector<TestScenario> CreateTestScenarios(bool use_proxy,
   std::vector<TestScenario> scenarios;
   std::vector<grpc::string> credentials_types;
   if (test_secure) {
-    credentials_types = GetSecureCredentialsTypeList();
+    credentials_types =
+        GetCredentialsProvider()->GetSecureCredentialsTypeList();
   }
   if (test_insecure) {
-    credentials_types.push_back(kInsecureCredentialsType);
+    // Only add insecure credentials type when it is registered with the
+    // provider. User may create providers that do not have insecure.
+    if (GetCredentialsProvider()->GetChannelCredentials(
+            kInsecureCredentialsType, nullptr) != nullptr) {
+      credentials_types.push_back(kInsecureCredentialsType);
+    }
   }
+  GPR_ASSERT(!credentials_types.empty());
   for (auto it = credentials_types.begin(); it != credentials_types.end();
        ++it) {
     scenarios.emplace_back(false, *it);
@@ -1541,7 +1549,7 @@ INSTANTIATE_TEST_CASE_P(End2end, End2endTest,
 
 INSTANTIATE_TEST_CASE_P(End2endServerTryCancel, End2endServerTryCancelTest,
                         ::testing::ValuesIn(CreateTestScenarios(false, true,
-                                                                false)));
+                                                                true)));
 
 INSTANTIATE_TEST_CASE_P(ProxyEnd2end, ProxyEnd2endTest,
                         ::testing::ValuesIn(CreateTestScenarios(true, true,
diff --git a/test/cpp/end2end/filter_end2end_test.cc b/test/cpp/end2end/filter_end2end_test.cc
index ab6ed46de564446b85f59c9d40455206d43990cf..bd384f68b40724e3dc996ccf03be4c5606aa75cd 100644
--- a/test/cpp/end2end/filter_end2end_test.cc
+++ b/test/cpp/end2end/filter_end2end_test.cc
@@ -114,20 +114,17 @@ int GetCallCounterValue() {
 
 class ChannelDataImpl : public ChannelData {
  public:
-  ChannelDataImpl(const grpc_channel_args& args, const char* peer)
-      : ChannelData(args, peer) {
+  grpc_error* Init(grpc_exec_ctx* exec_ctx, grpc_channel_element_args* args) {
     IncrementConnectionCounter();
+    return GRPC_ERROR_NONE;
   }
 };
 
 class CallDataImpl : public CallData {
  public:
-  explicit CallDataImpl(const ChannelDataImpl& channel_data)
-      : CallData(channel_data) {}
-
   void StartTransportStreamOp(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
                               TransportStreamOp* op) override {
-    // Incrementing the counter could be done from the ctor, but we want
+    // Incrementing the counter could be done from Init(), but we want
     // to test that the individual methods are actually called correctly.
     if (op->recv_initial_metadata() != nullptr) IncrementCallCounter();
     grpc_call_next_op(exec_ctx, elem, op->op());
diff --git a/test/cpp/grpclb/grpclb_test.cc b/test/cpp/grpclb/grpclb_test.cc
index fcdcaba6a23ddf6d7a4d0b25e251fef6c01bdfa0..de304b9f89ce246a3d8952f6079a76eada79b321 100644
--- a/test/cpp/grpclb/grpclb_test.cc
+++ b/test/cpp/grpclb/grpclb_test.cc
@@ -659,7 +659,7 @@ static test_fixture setup_test_fixture(int lb_server_update_delay_ms) {
   char *server_uri;
   // The grpclb LB policy will be automatically selected by virtue of
   // the fact that the returned addresses are balancer addresses.
-  gpr_asprintf(&server_uri, "test:%s?lb_enabled=1",
+  gpr_asprintf(&server_uri, "test:///%s?lb_enabled=1",
                tf.lb_server.servers_hostport);
   setup_client(server_uri, &tf.client);
   gpr_free(server_uri);
diff --git a/test/cpp/interop/client.cc b/test/cpp/interop/client.cc
index c58910abc3fb5a3e5827be04ee90b435ae02ea9c..3265554444b9af68986713abeb5287f0dc9744f5 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -49,6 +49,7 @@
 #include "test/cpp/util/test_config.h"
 
 DEFINE_bool(use_tls, false, "Whether to use tls.");
+DEFINE_string(custom_credentials_type, "", "User provided credentials type.");
 DEFINE_bool(use_test_ca, false, "False to use SSL roots for google");
 DEFINE_int32(server_port, 0, "Server port.");
 DEFINE_string(server_host, "127.0.0.1", "Server host to connect to");
diff --git a/test/cpp/interop/client_helper.cc b/test/cpp/interop/client_helper.cc
index c171969e147d35665fe5dd95d14f38db8cb8019b..91564e5dcefbb71c1f50a9d6f6deb97715f5ff5a 100644
--- a/test/cpp/interop/client_helper.cc
+++ b/test/cpp/interop/client_helper.cc
@@ -50,8 +50,10 @@
 #include "src/cpp/client/secure_credentials.h"
 #include "test/core/security/oauth2_utils.h"
 #include "test/cpp/util/create_test_channel.h"
+#include "test/cpp/util/test_credentials_provider.h"
 
 DECLARE_bool(use_tls);
+DECLARE_string(custom_credentials_type);
 DECLARE_bool(use_test_ca);
 DECLARE_int32(server_port);
 DECLARE_string(server_host);
@@ -114,8 +116,12 @@ std::shared_ptr<Channel> CreateChannelForTestCase(
     creds = AccessTokenCredentials(raw_token);
     GPR_ASSERT(creds);
   }
-  return CreateTestChannel(host_port, FLAGS_server_host_override, FLAGS_use_tls,
-                           !FLAGS_use_test_ca, creds);
+  if (FLAGS_custom_credentials_type.empty()) {
+    return CreateTestChannel(host_port, FLAGS_server_host_override,
+                             FLAGS_use_tls, !FLAGS_use_test_ca, creds);
+  } else {
+    return CreateTestChannel(host_port, FLAGS_custom_credentials_type, creds);
+  }
 }
 
 }  // namespace testing
diff --git a/test/cpp/interop/http2_client.cc b/test/cpp/interop/http2_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..38aee43b26a947b9ed39b9e071e3d8ba194b6973
--- /dev/null
+++ b/test/cpp/interop/http2_client.cc
@@ -0,0 +1,272 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <thread>
+
+#include <gflags/gflags.h>
+#include <grpc++/channel.h>
+#include <grpc++/client_context.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/useful.h>
+
+#include "src/core/lib/transport/byte_stream.h"
+#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/test.grpc.pb.h"
+#include "test/cpp/interop/http2_client.h"
+
+#include "src/core/lib/support/string.h"
+#include "test/cpp/util/create_test_channel.h"
+#include "test/cpp/util/test_config.h"
+
+namespace grpc {
+namespace testing {
+
+namespace {
+const int kLargeRequestSize = 271828;
+const int kLargeResponseSize = 314159;
+}  // namespace
+
+Http2Client::ServiceStub::ServiceStub(std::shared_ptr<Channel> channel)
+    : channel_(channel) {
+  stub_ = TestService::NewStub(channel);
+}
+
+TestService::Stub* Http2Client::ServiceStub::Get() { return stub_.get(); }
+
+Http2Client::Http2Client(std::shared_ptr<Channel> channel)
+    : serviceStub_(channel), channel_(channel) {}
+
+bool Http2Client::AssertStatusCode(const Status& s, StatusCode expected_code) {
+  if (s.error_code() == expected_code) {
+    return true;
+  }
+
+  gpr_log(GPR_ERROR, "Error status code: %d (expected: %d), message: %s",
+          s.error_code(), expected_code, s.error_message().c_str());
+  abort();
+}
+
+bool Http2Client::DoRstAfterHeader() {
+  gpr_log(GPR_DEBUG, "Sending RPC and expecting reset stream after header");
+
+  ClientContext context;
+  SimpleRequest request;
+  SimpleResponse response;
+  request.set_response_size(kLargeResponseSize);
+  grpc::string payload(kLargeRequestSize, '\0');
+  request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
+
+  Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
+  AssertStatusCode(s, grpc::StatusCode::UNKNOWN);
+  GPR_ASSERT(!response.has_payload());  // no data should be received
+
+  gpr_log(GPR_DEBUG, "Done testing reset stream after header");
+  return true;
+}
+
+bool Http2Client::DoRstAfterData() {
+  gpr_log(GPR_DEBUG, "Sending RPC and expecting reset stream after data");
+
+  ClientContext context;
+  SimpleRequest request;
+  SimpleResponse response;
+  request.set_response_size(kLargeResponseSize);
+  grpc::string payload(kLargeRequestSize, '\0');
+  request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
+
+  Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
+  AssertStatusCode(s, grpc::StatusCode::UNKNOWN);
+  GPR_ASSERT(response.has_payload());  // data should be received
+
+  gpr_log(GPR_DEBUG, "Done testing reset stream after data");
+  return true;
+}
+
+bool Http2Client::DoRstDuringData() {
+  gpr_log(GPR_DEBUG, "Sending RPC and expecting reset stream during data");
+
+  ClientContext context;
+  SimpleRequest request;
+  SimpleResponse response;
+  request.set_response_size(kLargeResponseSize);
+  grpc::string payload(kLargeRequestSize, '\0');
+  request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
+
+  Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
+  AssertStatusCode(s, grpc::StatusCode::UNKNOWN);
+  GPR_ASSERT(!response.has_payload());  // no data should be received
+
+  gpr_log(GPR_DEBUG, "Done testing reset stream during data");
+  return true;
+}
+
+bool Http2Client::DoGoaway() {
+  gpr_log(GPR_DEBUG, "Sending two RPCs and expecting goaway");
+
+  int numCalls = 2;
+  for (int i = 0; i < numCalls; i++) {
+    ClientContext context;
+    SimpleRequest request;
+    SimpleResponse response;
+    request.set_response_size(kLargeResponseSize);
+    grpc::string payload(kLargeRequestSize, '\0');
+    request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
+
+    Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
+    AssertStatusCode(s, grpc::StatusCode::OK);
+    GPR_ASSERT(response.payload().body() ==
+               grpc::string(kLargeResponseSize, '\0'));
+  }
+
+  gpr_log(GPR_DEBUG, "Done testing goaway");
+  return true;
+}
+
+bool Http2Client::DoPing() {
+  gpr_log(GPR_DEBUG, "Sending RPC and expecting ping");
+
+  ClientContext context;
+  SimpleRequest request;
+  SimpleResponse response;
+  request.set_response_size(kLargeResponseSize);
+  grpc::string payload(kLargeRequestSize, '\0');
+  request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
+
+  Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
+  AssertStatusCode(s, grpc::StatusCode::OK);
+  GPR_ASSERT(response.payload().body() ==
+             grpc::string(kLargeResponseSize, '\0'));
+
+  gpr_log(GPR_DEBUG, "Done testing ping");
+  return true;
+}
+
+void Http2Client::MaxStreamsWorker(std::shared_ptr<grpc::Channel> channel) {
+  ClientContext context;
+  SimpleRequest request;
+  SimpleResponse response;
+  request.set_response_size(kLargeResponseSize);
+  grpc::string payload(kLargeRequestSize, '\0');
+  request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
+
+  Status s =
+      TestService::NewStub(channel)->UnaryCall(&context, request, &response);
+  AssertStatusCode(s, grpc::StatusCode::OK);
+  GPR_ASSERT(response.payload().body() ==
+             grpc::string(kLargeResponseSize, '\0'));
+}
+
+bool Http2Client::DoMaxStreams() {
+  gpr_log(GPR_DEBUG, "Testing max streams");
+
+  // Make an initial call on the channel to ensure the server's max streams
+  // setting is received
+  ClientContext context;
+  SimpleRequest request;
+  SimpleResponse response;
+  request.set_response_size(kLargeResponseSize);
+  grpc::string payload(kLargeRequestSize, '\0');
+  request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
+  Status s =
+      TestService::NewStub(channel_)->UnaryCall(&context, request, &response);
+  AssertStatusCode(s, grpc::StatusCode::OK);
+  GPR_ASSERT(response.payload().body() ==
+             grpc::string(kLargeResponseSize, '\0'));
+
+  std::vector<std::thread> test_threads;
+
+  for (int i = 0; i < 10; i++) {
+    test_threads.emplace_back(
+        std::thread(&Http2Client::MaxStreamsWorker, this, channel_));
+  }
+
+  for (auto it = test_threads.begin(); it != test_threads.end(); it++) {
+    it->join();
+  }
+
+  gpr_log(GPR_DEBUG, "Done testing max streams");
+  return true;
+}
+
+}  // namespace testing
+}  // namespace grpc
+
+DEFINE_int32(server_port, 0, "Server port.");
+DEFINE_string(server_host, "127.0.0.1", "Server host to connect to");
+DEFINE_string(test_case, "rst_after_header",
+              "Configure different test cases. Valid options are:\n\n"
+              "goaway\n"
+              "max_streams\n"
+              "ping\n"
+              "rst_after_data\n"
+              "rst_after_header\n"
+              "rst_during_data\n");
+
+int main(int argc, char** argv) {
+  grpc::testing::InitTest(&argc, &argv, true);
+  GPR_ASSERT(FLAGS_server_port);
+  const int host_port_buf_size = 1024;
+  char host_port[host_port_buf_size];
+  snprintf(host_port, host_port_buf_size, "%s:%d", FLAGS_server_host.c_str(),
+           FLAGS_server_port);
+  grpc::testing::Http2Client client(grpc::CreateTestChannel(host_port, false));
+  gpr_log(GPR_INFO, "Testing case: %s", FLAGS_test_case.c_str());
+  int ret = 0;
+  if (FLAGS_test_case == "rst_after_header") {
+    client.DoRstAfterHeader();
+  } else if (FLAGS_test_case == "rst_after_data") {
+    client.DoRstAfterData();
+  } else if (FLAGS_test_case == "rst_during_data") {
+    client.DoRstDuringData();
+  } else if (FLAGS_test_case == "goaway") {
+    client.DoGoaway();
+  } else if (FLAGS_test_case == "ping") {
+    client.DoPing();
+  } else if (FLAGS_test_case == "max_streams") {
+    client.DoMaxStreams();
+  } else {
+    const char* testcases[] = {
+        "goaway",         "max_streams",      "ping",
+        "rst_after_data", "rst_after_header", "rst_during_data"};
+    char* joined_testcases =
+        gpr_strjoin_sep(testcases, GPR_ARRAY_SIZE(testcases), "\n", NULL);
+
+    gpr_log(GPR_ERROR, "Unsupported test case %s. Valid options are\n%s",
+            FLAGS_test_case.c_str(), joined_testcases);
+    gpr_free(joined_testcases);
+    ret = 1;
+  }
+
+  return ret;
+}
diff --git a/test/cpp/qps/limit_cores.cc b/test/cpp/interop/http2_client.h
similarity index 59%
rename from test/cpp/qps/limit_cores.cc
rename to test/cpp/interop/http2_client.h
index b5c222542be8292b2cfa1d3d5e6a2d586bab47a4..6a315f5abbab8b38e4ebcacd56c205f2d9bdf55f 100644
--- a/test/cpp/qps/limit_cores.cc
+++ b/test/cpp/interop/http2_client.h
@@ -31,57 +31,50 @@
  *
  */
 
-#include "test/cpp/qps/limit_cores.h"
+#ifndef GRPC_TEST_CPP_INTEROP_HTTP2_CLIENT_H
+#define GRPC_TEST_CPP_INTEROP_HTTP2_CLIENT_H
 
-#include <grpc/support/cpu.h>
-#include <grpc/support/log.h>
-#include <grpc/support/port_platform.h>
+#include <memory>
 
-#ifdef GPR_CPU_LINUX
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
-#include <sched.h>
+#include <grpc++/channel.h>
+#include <grpc/grpc.h>
+#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/test.grpc.pb.h"
 
 namespace grpc {
 namespace testing {
 
-int LimitCores(const int* cores, int cores_size) {
-  const int num_cores = gpr_cpu_num_cores();
-  int cores_set = 0;
+class Http2Client {
+ public:
+  explicit Http2Client(std::shared_ptr<Channel> channel);
+  ~Http2Client() {}
 
-  cpu_set_t* cpup = CPU_ALLOC(num_cores);
-  GPR_ASSERT(cpup);
-  const size_t size = CPU_ALLOC_SIZE(num_cores);
-  CPU_ZERO_S(size, cpup);
+  bool DoRstAfterHeader();
+  bool DoRstAfterData();
+  bool DoRstDuringData();
+  bool DoGoaway();
+  bool DoPing();
+  bool DoMaxStreams();
 
-  if (cores_size > 0) {
-    for (int i = 0; i < cores_size; i++) {
-      if (cores[i] < num_cores) {
-        CPU_SET_S(cores[i], size, cpup);
-        cores_set++;
-      }
-    }
-  } else {
-    for (int i = 0; i < num_cores; i++) {
-      CPU_SET_S(i, size, cpup);
-      cores_set++;
-    }
-  }
-  bool affinity_set = (sched_setaffinity(0, size, cpup) == 0);
-  CPU_FREE(cpup);
-  return affinity_set ? cores_set : num_cores;
-}
+ private:
+  class ServiceStub {
+   public:
+    ServiceStub(std::shared_ptr<Channel> channel);
 
-}  // namespace testing
-}  // namespace grpc
-#else
-namespace grpc {
-namespace testing {
+    TestService::Stub* Get();
+
+   private:
+    std::unique_ptr<TestService::Stub> stub_;
+    std::shared_ptr<Channel> channel_;
+  };
 
-// LimitCores is not currently supported for non-Linux platforms
-int LimitCores(const int*, int) { return gpr_cpu_num_cores(); }
+  void MaxStreamsWorker(std::shared_ptr<grpc::Channel> channel);
+  bool AssertStatusCode(const Status& s, StatusCode expected_code);
+  ServiceStub serviceStub_;
+  std::shared_ptr<Channel> channel_;
+};
 
 }  // namespace testing
 }  // namespace grpc
-#endif
+
+#endif  // GRPC_TEST_CPP_INTEROP_HTTP2_CLIENT_H
diff --git a/test/cpp/interop/interop_server.cc b/test/cpp/interop/interop_server.cc
index 67456ce18bbb0ddc8b80268fe52f06545f888113..956840ba7090d5bc374dbc49f196e0fb480bb1a4 100644
--- a/test/cpp/interop/interop_server.cc
+++ b/test/cpp/interop/interop_server.cc
@@ -56,6 +56,7 @@
 #include "test/cpp/util/test_config.h"
 
 DEFINE_bool(use_tls, false, "Whether to use tls.");
+DEFINE_string(custom_credentials_type, "", "User provided credentials type.");
 DEFINE_int32(port, 0, "Server port.");
 DEFINE_int32(max_send_message_size, -1, "The maximum send message size.");
 
diff --git a/test/cpp/interop/server_helper.cc b/test/cpp/interop/server_helper.cc
index 8b0b511bcb89d62d4e5642266b8aaaa83bf9e6b2..d395f50fa59297f86d7154cead138e50a67945e4 100644
--- a/test/cpp/interop/server_helper.cc
+++ b/test/cpp/interop/server_helper.cc
@@ -39,23 +39,23 @@
 #include <grpc++/security/server_credentials.h>
 
 #include "src/core/lib/surface/call_test_only.h"
-#include "test/core/end2end/data/ssl_test_data.h"
+#include "test/cpp/util/test_credentials_provider.h"
 
 DECLARE_bool(use_tls);
+DECLARE_string(custom_credentials_type);
 
 namespace grpc {
 namespace testing {
 
 std::shared_ptr<ServerCredentials> CreateInteropServerCredentials() {
-  if (FLAGS_use_tls) {
-    SslServerCredentialsOptions::PemKeyCertPair pkcp = {test_server1_key,
-                                                        test_server1_cert};
-    SslServerCredentialsOptions ssl_opts;
-    ssl_opts.pem_root_certs = "";
-    ssl_opts.pem_key_cert_pairs.push_back(pkcp);
-    return SslServerCredentials(ssl_opts);
+  if (!FLAGS_custom_credentials_type.empty()) {
+    return GetCredentialsProvider()->GetServerCredentials(
+        FLAGS_custom_credentials_type);
+  } else if (FLAGS_use_tls) {
+    return GetCredentialsProvider()->GetServerCredentials(kTlsCredentialsType);
   } else {
-    return InsecureServerCredentials();
+    return GetCredentialsProvider()->GetServerCredentials(
+        kInsecureCredentialsType);
   }
 }
 
diff --git a/test/cpp/interop/stress_test.cc b/test/cpp/interop/stress_test.cc
index fc35db5233ab0b07296df15f3433e372bad5e5d2..562522de779c34c530299048b913207861ded048 100644
--- a/test/cpp/interop/stress_test.cc
+++ b/test/cpp/interop/stress_test.cc
@@ -147,6 +147,7 @@ DEFINE_bool(do_not_abort_on_transient_failures, true,
 // Options from client.cc (for compatibility with interop test).
 // TODO(sreek): Consolidate overlapping options
 DEFINE_bool(use_tls, false, "Whether to use tls.");
+DEFINE_string(custom_credentials_type, "", "User provided credentials type.");
 DEFINE_bool(use_test_ca, false, "False to use SSL roots for google");
 DEFINE_int32(server_port, 0, "Server port.");
 DEFINE_string(server_host, "127.0.0.1", "Server host to connect to");
@@ -371,9 +372,9 @@ int main(int argc, char** argv) {
   }
 
   // Start metrics server before waiting for the stress test threads
+  std::unique_ptr<grpc::Server> metrics_server;
   if (FLAGS_metrics_port > 0) {
-    std::unique_ptr<grpc::Server> metrics_server =
-        metrics_service.StartServer(FLAGS_metrics_port);
+    metrics_server = metrics_service.StartServer(FLAGS_metrics_port);
   }
 
   // Wait for the stress test threads to complete
diff --git a/test/cpp/qps/client.h b/test/cpp/qps/client.h
index fdd78ebb899d2626278e4263674a6acbb8f978f4..baa9304cc2d47e5df91f2fcef62a90c3622279d7 100644
--- a/test/cpp/qps/client.h
+++ b/test/cpp/qps/client.h
@@ -51,7 +51,6 @@
 
 #include "test/cpp/qps/histogram.h"
 #include "test/cpp/qps/interarrival.h"
-#include "test/cpp/qps/limit_cores.h"
 #include "test/cpp/qps/usage_timer.h"
 #include "test/cpp/util/create_test_channel.h"
 
@@ -374,7 +373,7 @@ class ClientImpl : public Client {
   ClientImpl(const ClientConfig& config,
              std::function<std::unique_ptr<StubType>(std::shared_ptr<Channel>)>
                  create_stub)
-      : cores_(LimitCores(config.core_list().data(), config.core_list_size())),
+      : cores_(gpr_cpu_num_cores()),
         channels_(config.client_channels()),
         create_stub_(create_stub) {
     for (int i = 0; i < config.client_channels(); i++) {
@@ -409,6 +408,7 @@ class ClientImpl : public Client {
       // old compilers happy with using this in std::vector
       ChannelArguments args;
       args.SetInt("shard_to_ensure_no_subchannel_merges", shard);
+      set_channel_args(config, &args);
       channel_ = CreateTestChannel(
           target, config.security_params().server_host_override(),
           config.has_security_params(), !config.security_params().use_test_ca(),
@@ -423,6 +423,18 @@ class ClientImpl : public Client {
     StubType* get_stub() { return stub_.get(); }
 
    private:
+    void set_channel_args(const ClientConfig& config, ChannelArguments* args) {
+      for (auto channel_arg : config.channel_args()) {
+        if (channel_arg.value_case() == ChannelArg::kStrValue) {
+          args->SetString(channel_arg.name(), channel_arg.str_value());
+        } else if (channel_arg.value_case() == ChannelArg::kIntValue) {
+          args->SetInt(channel_arg.name(), channel_arg.int_value());
+        } else {
+          gpr_log(GPR_ERROR, "Empty channel arg value.");
+        }
+      }
+    }
+
     std::shared_ptr<Channel> channel_;
     std::unique_ptr<StubType> stub_;
   };
diff --git a/test/cpp/qps/driver.cc b/test/cpp/qps/driver.cc
index 22b2cd080d834a75033c1e48ae5a010319d12504..74fe3662c1ca2c2029cd8689872f7961849188e8 100644
--- a/test/cpp/qps/driver.cc
+++ b/test/cpp/qps/driver.cc
@@ -44,6 +44,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
 #include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
 
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/support/env.h"
@@ -75,47 +76,36 @@ static std::string get_host(const std::string& worker) {
   return s;
 }
 
-static std::unordered_map<string, std::deque<int>> get_hosts_and_cores(
-    const deque<string>& workers) {
-  std::unordered_map<string, std::deque<int>> hosts;
-  for (auto it = workers.begin(); it != workers.end(); it++) {
-    const string host = get_host(*it);
-    if (hosts.find(host) == hosts.end()) {
-      auto stub = WorkerService::NewStub(
-          CreateChannel(*it, InsecureChannelCredentials()));
-      grpc::ClientContext ctx;
-      ctx.set_wait_for_ready(true);
-      CoreRequest dummy;
-      CoreResponse cores;
-      grpc::Status s = stub->CoreCount(&ctx, dummy, &cores);
-      GPR_ASSERT(s.ok());
-      std::deque<int> dq;
-      for (int i = 0; i < cores.cores(); i++) {
-        dq.push_back(i);
-      }
-      hosts[host] = dq;
-    }
+static deque<string> get_workers(const string& env_name) {
+  char* env = gpr_getenv(env_name.c_str());
+  if (!env) {
+    env = gpr_strdup("");
   }
-  return hosts;
-}
-
-static deque<string> get_workers(const string& name) {
-  char* env = gpr_getenv(name.c_str());
-  if (!env || strlen(env) == 0) return deque<string>();
-
   deque<string> out;
   char* p = env;
-  for (;;) {
-    char* comma = strchr(p, ',');
-    if (comma) {
-      out.emplace_back(p, comma);
-      p = comma + 1;
-    } else {
-      out.emplace_back(p);
-      gpr_free(env);
-      return out;
+  if (strlen(env) != 0) {
+    for (;;) {
+      char* comma = strchr(p, ',');
+      if (comma) {
+        out.emplace_back(p, comma);
+        p = comma + 1;
+      } else {
+        out.emplace_back(p);
+        break;
+      }
     }
   }
+  if (out.size() == 0) {
+    gpr_log(GPR_ERROR,
+            "Environment variable \"%s\" does not contain a list of QPS "
+            "workers to use. Set it to a comma-separated list of "
+            "hostname:port pairs, starting with hosts that should act as "
+            "servers. E.g. export "
+            "%s=\"serverhost1:1234,clienthost1:1234,clienthost2:1234\"",
+            env_name.c_str(), env_name.c_str());
+  }
+  gpr_free(env);
+  return out;
 }
 
 // helpers for postprocess_scenario_result
@@ -195,7 +185,8 @@ static void postprocess_scenario_result(ScenarioResult* result) {
 std::unique_ptr<ScenarioResult> RunScenario(
     const ClientConfig& initial_client_config, size_t num_clients,
     const ServerConfig& initial_server_config, size_t num_servers,
-    int warmup_seconds, int benchmark_seconds, int spawn_local_worker_count) {
+    int warmup_seconds, int benchmark_seconds, int spawn_local_worker_count,
+    const char* qps_server_target_override) {
   // Log everything from the driver
   gpr_set_log_verbosity(GPR_LOG_SEVERITY_DEBUG);
 
@@ -240,9 +231,7 @@ std::unique_ptr<ScenarioResult> RunScenario(
       workers.push_back(addr);
     }
   }
-
-  // Setup the hosts and core counts
-  auto hosts_cores = get_hosts_and_cores(workers);
+  GPR_ASSERT(workers.size() != 0);
 
   // if num_clients is set to <=0, do dynamic sizing: all workers
   // except for servers are clients
@@ -264,6 +253,8 @@ std::unique_ptr<ScenarioResult> RunScenario(
     unique_ptr<ClientReaderWriter<ServerArgs, ServerStatus>> stream;
   };
   std::vector<ServerData> servers(num_servers);
+  std::unordered_map<string, std::deque<int>> hosts_cores;
+
   for (size_t i = 0; i < num_servers; i++) {
     gpr_log(GPR_INFO, "Starting server on %s (worker #%" PRIuPTR ")",
             workers[i].c_str(), i);
@@ -271,38 +262,9 @@ std::unique_ptr<ScenarioResult> RunScenario(
         CreateChannel(workers[i], InsecureChannelCredentials()));
 
     ServerConfig server_config = initial_server_config;
-    char* host;
-    char* driver_port;
-    char* cli_target;
-    gpr_split_host_port(workers[i].c_str(), &host, &driver_port);
-    string host_str(host);
-    int server_core_limit = initial_server_config.core_limit();
-    int client_core_limit = initial_client_config.core_limit();
-
-    if (server_core_limit == 0 && client_core_limit > 0) {
-      // In this case, limit the server cores if it matches the
-      // same host as one or more clients
-      const auto& dq = hosts_cores.at(host_str);
-      bool match = false;
-      int limit = dq.size();
-      for (size_t cli = 0; cli < num_clients; cli++) {
-        if (host_str == get_host(workers[cli + num_servers])) {
-          limit -= client_core_limit;
-          match = true;
-        }
-      }
-      if (match) {
-        GPR_ASSERT(limit > 0);
-        server_core_limit = limit;
-      }
-    }
-    if (server_core_limit > 0) {
-      auto& dq = hosts_cores.at(host_str);
-      GPR_ASSERT(dq.size() >= static_cast<size_t>(server_core_limit));
-      for (int core = 0; core < server_core_limit; core++) {
-        server_config.add_core_list(dq.front());
-        dq.pop_front();
-      }
+    if (server_config.core_limit() != 0) {
+      gpr_log(GPR_ERROR,
+              "server config core limit is set but ignored by driver");
     }
 
     ServerArgs args;
@@ -315,11 +277,19 @@ std::unique_ptr<ScenarioResult> RunScenario(
     if (!servers[i].stream->Read(&init_status)) {
       gpr_log(GPR_ERROR, "Server %zu did not yield initial status", i);
     }
-    gpr_join_host_port(&cli_target, host, init_status.port());
-    client_config.add_server_targets(cli_target);
-    gpr_free(host);
-    gpr_free(driver_port);
-    gpr_free(cli_target);
+    if (qps_server_target_override != NULL &&
+        strlen(qps_server_target_override) > 0) {
+      // overriding the qps server target only works if there is 1 server
+      GPR_ASSERT(num_servers == 1);
+      client_config.add_server_targets(qps_server_target_override);
+    } else {
+      std::string host;
+      char* cli_target;
+      host = get_host(workers[i]);
+      gpr_join_host_port(&cli_target, host.c_str(), init_status.port());
+      client_config.add_server_targets(cli_target);
+      gpr_free(cli_target);
+    }
   }
 
   // Targets are all set by now
@@ -339,31 +309,8 @@ std::unique_ptr<ScenarioResult> RunScenario(
         CreateChannel(worker, InsecureChannelCredentials()));
     ClientConfig per_client_config = client_config;
 
-    int server_core_limit = initial_server_config.core_limit();
-    int client_core_limit = initial_client_config.core_limit();
-    if ((server_core_limit > 0) || (client_core_limit > 0)) {
-      auto& dq = hosts_cores.at(get_host(worker));
-      if (client_core_limit == 0) {
-        // limit client cores if it matches a server host
-        bool match = false;
-        int limit = dq.size();
-        for (size_t srv = 0; srv < num_servers; srv++) {
-          if (get_host(worker) == get_host(workers[srv])) {
-            match = true;
-          }
-        }
-        if (match) {
-          GPR_ASSERT(limit > 0);
-          client_core_limit = limit;
-        }
-      }
-      if (client_core_limit > 0) {
-        GPR_ASSERT(dq.size() >= static_cast<size_t>(client_core_limit));
-        for (int core = 0; core < client_core_limit; core++) {
-          per_client_config.add_core_list(dq.front());
-          dq.pop_front();
-        }
-      }
+    if (initial_client_config.core_limit() != 0) {
+      gpr_log(GPR_ERROR, "client config core limit set but ignored");
     }
 
     // Reduce channel count so that total channels specified is held regardless
@@ -548,6 +495,9 @@ bool RunQuit() {
   // Get client, server lists
   bool result = true;
   auto workers = get_workers("QPS_WORKERS");
+  if (workers.size() == 0) {
+    return false;
+  }
   for (size_t i = 0; i < workers.size(); i++) {
     auto stub = WorkerService::NewStub(
         CreateChannel(workers[i], InsecureChannelCredentials()));
diff --git a/test/cpp/qps/driver.h b/test/cpp/qps/driver.h
index 93f4370cafa51787051e509f50b1100dd0c1dd6f..e72d30a4effbc03cc3e67835eee4722fcc43b13e 100644
--- a/test/cpp/qps/driver.h
+++ b/test/cpp/qps/driver.h
@@ -45,7 +45,8 @@ namespace testing {
 std::unique_ptr<ScenarioResult> RunScenario(
     const grpc::testing::ClientConfig& client_config, size_t num_clients,
     const grpc::testing::ServerConfig& server_config, size_t num_servers,
-    int warmup_seconds, int benchmark_seconds, int spawn_local_worker_count);
+    int warmup_seconds, int benchmark_seconds, int spawn_local_worker_count,
+    const char* qps_server_target_override = "");
 
 bool RunQuit();
 }  // namespace testing
diff --git a/test/cpp/qps/qps_json_driver.cc b/test/cpp/qps/qps_json_driver.cc
index 31b5917fb74d58c66562ddadc83fa104e235384d..ddaaa7ca75e1a83ce06940802a1093b50637cc69 100644
--- a/test/cpp/qps/qps_json_driver.cc
+++ b/test/cpp/qps/qps_json_driver.cc
@@ -67,6 +67,10 @@ DEFINE_double(error_tolerance, 0.01,
               "range is narrower than the error_tolerance computed range, we "
               "stop the search.");
 
+DEFINE_string(qps_server_target_override, "",
+              "Override QPS server target to configure in client configs."
+              "Only applicable if there is a single benchmark server.");
+
 namespace grpc {
 namespace testing {
 
@@ -77,7 +81,8 @@ static std::unique_ptr<ScenarioResult> RunAndReport(const Scenario& scenario,
       RunScenario(scenario.client_config(), scenario.num_clients(),
                   scenario.server_config(), scenario.num_servers(),
                   scenario.warmup_seconds(), scenario.benchmark_seconds(),
-                  scenario.spawn_local_worker_count());
+                  scenario.spawn_local_worker_count(),
+                  FLAGS_qps_server_target_override.c_str());
 
   // Amend the result with scenario config. Eventually we should adjust
   // RunScenario contract so we don't need to touch the result here.
@@ -204,6 +209,7 @@ static bool QpsDriver() {
             SearchOfferedLoad(FLAGS_initial_search_value,
                               FLAGS_targeted_cpu_load, scenario, &success);
         gpr_log(GPR_INFO, "targeted_offered_load %f", targeted_offered_load);
+        GetCpuLoad(scenario, targeted_offered_load, &success);
       } else {
         gpr_log(GPR_ERROR, "Unimplemented search param");
       }
diff --git a/test/cpp/qps/server.h b/test/cpp/qps/server.h
index c3d18e578928a037d27dccc1a10d4ea8acfc37dc..821d5935beb96d971ad2539587492f9a183f50b5 100644
--- a/test/cpp/qps/server.h
+++ b/test/cpp/qps/server.h
@@ -42,7 +42,6 @@
 #include "src/proto/grpc/testing/messages.grpc.pb.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
-#include "test/cpp/qps/limit_cores.h"
 #include "test/cpp/qps/usage_timer.h"
 
 namespace grpc {
@@ -51,7 +50,7 @@ namespace testing {
 class Server {
  public:
   explicit Server(const ServerConfig& config) : timer_(new UsageTimer) {
-    cores_ = LimitCores(config.core_list().data(), config.core_list_size());
+    cores_ = gpr_cpu_num_cores();
     if (config.port()) {
       port_ = config.port();
 
diff --git a/test/cpp/util/create_test_channel.cc b/test/cpp/util/create_test_channel.cc
index fe8b5d54235b1bd2fe64c24e4bf63db290ec95a3..ad62e03490e359501e2fa1a1dab1662ba34f5391 100644
--- a/test/cpp/util/create_test_channel.cc
+++ b/test/cpp/util/create_test_channel.cc
@@ -35,11 +35,37 @@
 
 #include <grpc++/create_channel.h>
 #include <grpc++/security/credentials.h>
+#include <grpc/support/log.h>
 
-#include "test/core/end2end/data/ssl_test_data.h"
+#include "test/cpp/util/test_credentials_provider.h"
 
 namespace grpc {
 
+namespace {
+
+const char kProdTlsCredentialsType[] = "prod_ssl";
+
+class SslCredentialProvider : public testing::CredentialTypeProvider {
+ public:
+  std::shared_ptr<ChannelCredentials> GetChannelCredentials(
+      grpc::ChannelArguments* args) override {
+    return SslCredentials(SslCredentialsOptions());
+  }
+  std::shared_ptr<ServerCredentials> GetServerCredentials() override {
+    return nullptr;
+  }
+};
+
+gpr_once g_once_init_add_prod_ssl_provider = GPR_ONCE_INIT;
+// Register ssl with non-test roots type to the credentials provider.
+void AddProdSslType() {
+  testing::GetCredentialsProvider()->AddSecureType(
+      kProdTlsCredentialsType, std::unique_ptr<testing::CredentialTypeProvider>(
+                                   new SslCredentialProvider));
+}
+
+}  // namespace
+
 // When ssl is enabled, if server is empty, override_hostname is used to
 // create channel. Otherwise, connect to server and override hostname if
 // override_hostname is provided.
@@ -61,16 +87,22 @@ std::shared_ptr<Channel> CreateTestChannel(
     const std::shared_ptr<CallCredentials>& creds,
     const ChannelArguments& args) {
   ChannelArguments channel_args(args);
+  std::shared_ptr<ChannelCredentials> channel_creds;
   if (enable_ssl) {
-    const char* roots_certs = use_prod_roots ? "" : test_root_cert;
-    SslCredentialsOptions ssl_opts = {roots_certs, "", ""};
-
-    std::shared_ptr<ChannelCredentials> channel_creds =
-        SslCredentials(ssl_opts);
-
-    if (!server.empty() && !override_hostname.empty()) {
-      channel_args.SetSslTargetNameOverride(override_hostname);
+    if (use_prod_roots) {
+      gpr_once_init(&g_once_init_add_prod_ssl_provider, &AddProdSslType);
+      channel_creds = testing::GetCredentialsProvider()->GetChannelCredentials(
+          kProdTlsCredentialsType, &channel_args);
+      if (!server.empty() && !override_hostname.empty()) {
+        channel_args.SetSslTargetNameOverride(override_hostname);
+      }
+    } else {
+      // override_hostname is discarded as the provider handles it.
+      channel_creds = testing::GetCredentialsProvider()->GetChannelCredentials(
+          testing::kTlsCredentialsType, &channel_args);
     }
+    GPR_ASSERT(channel_creds != nullptr);
+
     const grpc::string& connect_to =
         server.empty() ? override_hostname : server;
     if (creds.get()) {
@@ -103,4 +135,18 @@ std::shared_ptr<Channel> CreateTestChannel(const grpc::string& server,
   return CreateTestChannel(server, "foo.test.google.fr", enable_ssl, false);
 }
 
+std::shared_ptr<Channel> CreateTestChannel(
+    const grpc::string& server, const grpc::string& credential_type,
+    const std::shared_ptr<CallCredentials>& creds) {
+  ChannelArguments channel_args;
+  std::shared_ptr<ChannelCredentials> channel_creds =
+      testing::GetCredentialsProvider()->GetChannelCredentials(credential_type,
+                                                               &channel_args);
+  GPR_ASSERT(channel_creds != nullptr);
+  if (creds.get()) {
+    channel_creds = CompositeChannelCredentials(channel_creds, creds);
+  }
+  return CreateCustomChannel(server, channel_creds, channel_args);
+}
+
 }  // namespace grpc
diff --git a/test/cpp/util/create_test_channel.h b/test/cpp/util/create_test_channel.h
index 4ff666dc1bc43b48cf6eb75ca55e7684d86a0319..ce71a97edbbf6b08d3bd5beb024a5dd20230b132 100644
--- a/test/cpp/util/create_test_channel.h
+++ b/test/cpp/util/create_test_channel.h
@@ -59,6 +59,10 @@ std::shared_ptr<Channel> CreateTestChannel(
     const std::shared_ptr<CallCredentials>& creds,
     const ChannelArguments& args);
 
+std::shared_ptr<Channel> CreateTestChannel(
+    const grpc::string& server, const grpc::string& credential_type,
+    const std::shared_ptr<CallCredentials>& creds);
+
 }  // namespace grpc
 
 #endif  // GRPC_TEST_CPP_UTIL_CREATE_TEST_CHANNEL_H
diff --git a/test/cpp/util/grpc_tool.cc b/test/cpp/util/grpc_tool.cc
index a3da5682dc2c35ad68364e49009bd3d8e424862c..b9900ca1b7a74c140e68ef91fbb349998a372cf5 100644
--- a/test/cpp/util/grpc_tool.cc
+++ b/test/cpp/util/grpc_tool.cc
@@ -86,11 +86,12 @@ class GrpcTool {
   // callback);
   // bool PrintTypeId(int argc, const char** argv, GrpcToolOutputCallback
   // callback);
-  // bool ParseMessage(int argc, const char** argv, GrpcToolOutputCallback
-  // callback);
-  // bool ToText(int argc, const char** argv, GrpcToolOutputCallback callback);
-  // bool ToBinary(int argc, const char** argv, GrpcToolOutputCallback
-  // callback);
+  bool ParseMessage(int argc, const char** argv, const CliCredentials& cred,
+                    GrpcToolOutputCallback callback);
+  bool ToText(int argc, const char** argv, const CliCredentials& cred,
+              GrpcToolOutputCallback callback);
+  bool ToBinary(int argc, const char** argv, const CliCredentials& cred,
+                GrpcToolOutputCallback callback);
 
   void SetPrintCommandMode(int exit_status) {
     print_command_usage_ = true;
@@ -173,9 +174,9 @@ const Command ops[] = {
     {"list", BindWith5Args(&GrpcTool::ListServices), 1, 3},
     {"call", BindWith5Args(&GrpcTool::CallMethod), 2, 3},
     {"type", BindWith5Args(&GrpcTool::PrintType), 2, 2},
-    // {"parse", BindWith5Args(&GrpcTool::ParseMessage), 2, 3},
-    // {"totext", BindWith5Args(&GrpcTool::ToText), 2, 3},
-    // {"tobinary", BindWith5Args(&GrpcTool::ToBinary), 2, 3},
+    {"parse", BindWith5Args(&GrpcTool::ParseMessage), 2, 3},
+    {"totext", BindWith5Args(&GrpcTool::ToText), 2, 3},
+    {"tobinary", BindWith5Args(&GrpcTool::ToBinary), 2, 3},
 };
 
 void Usage(const grpc::string& msg) {
@@ -185,9 +186,9 @@ void Usage(const grpc::string& msg) {
       "  grpc_cli ls ...         ; List services\n"
       "  grpc_cli call ...       ; Call method\n"
       "  grpc_cli type ...       ; Print type\n"
-      // "  grpc_cli parse ...      ; Parse message\n"
-      // "  grpc_cli totext ...     ; Convert binary message to text\n"
-      // "  grpc_cli tobinary ...   ; Convert text message to binary\n"
+      "  grpc_cli parse ...      ; Parse message\n"
+      "  grpc_cli totext ...     ; Convert binary message to text\n"
+      "  grpc_cli tobinary ...   ; Convert text message to binary\n"
       "  grpc_cli help ...       ; Print this message, or per-command usage\n"
       "\n",
       msg.c_str());
@@ -496,5 +497,122 @@ bool GrpcTool::CallMethod(int argc, const char** argv,
   return callback(output_ss.str());
 }
 
+bool GrpcTool::ParseMessage(int argc, const char** argv,
+                            const CliCredentials& cred,
+                            GrpcToolOutputCallback callback) {
+  CommandUsage(
+      "Parse message\n"
+      "  grpc_cli parse <address> <type> [<message>]\n"
+      "    <address>                ; host:port\n"
+      "    <type>                   ; Protocol buffer type name\n"
+      "    <message>                ; Text protobuffer (overrides --infile)\n"
+      "    --protofiles             ; Comma separated proto files used as a"
+      " fallback when parsing request/response\n"
+      "    --proto_path             ; The search path of proto files, valid"
+      " only when --protofiles is given\n"
+      "    --infile                 ; Input filename (defaults to stdin)\n"
+      "    --outfile                ; Output filename (defaults to stdout)\n"
+      "    --binary_input           ; Input in binary format\n"
+      "    --binary_output          ; Output in binary format\n" +
+      cred.GetCredentialUsage());
+
+  std::stringstream output_ss;
+  grpc::string message_text;
+  grpc::string server_address(argv[0]);
+  grpc::string type_name(argv[1]);
+  std::unique_ptr<grpc::testing::ProtoFileParser> parser;
+  grpc::string serialized_request_proto;
+
+  if (argc == 3) {
+    message_text = argv[2];
+    if (!FLAGS_infile.empty()) {
+      fprintf(stderr, "warning: message given in argv, ignoring --infile.\n");
+    }
+  } else {
+    std::stringstream input_stream;
+    if (FLAGS_infile.empty()) {
+      if (isatty(STDIN_FILENO)) {
+        fprintf(stderr, "reading request message from stdin...\n");
+      }
+      input_stream << std::cin.rdbuf();
+    } else {
+      std::ifstream input_file(FLAGS_infile, std::ios::in | std::ios::binary);
+      input_stream << input_file.rdbuf();
+      input_file.close();
+    }
+    message_text = input_stream.str();
+  }
+
+  if (!FLAGS_binary_input || !FLAGS_binary_output) {
+    std::shared_ptr<grpc::Channel> channel =
+        grpc::CreateChannel(server_address, cred.GetCredentials());
+    parser.reset(
+        new grpc::testing::ProtoFileParser(FLAGS_remotedb ? channel : nullptr,
+                                           FLAGS_proto_path, FLAGS_protofiles));
+    if (parser->HasError()) {
+      return false;
+    }
+  }
+
+  if (FLAGS_binary_input) {
+    serialized_request_proto = message_text;
+  } else {
+    serialized_request_proto =
+        parser->GetSerializedProtoFromMessageType(type_name, message_text);
+    if (parser->HasError()) {
+      return false;
+    }
+  }
+
+  if (FLAGS_binary_output) {
+    output_ss << serialized_request_proto;
+  } else {
+    grpc::string output_text = parser->GetTextFormatFromMessageType(
+        type_name, serialized_request_proto);
+    if (parser->HasError()) {
+      return false;
+    }
+    output_ss << output_text << std::endl;
+  }
+
+  return callback(output_ss.str());
+}
+
+bool GrpcTool::ToText(int argc, const char** argv, const CliCredentials& cred,
+                      GrpcToolOutputCallback callback) {
+  CommandUsage(
+      "Convert binary message to text\n"
+      "  grpc_cli totext <protofiles> <type>\n"
+      "    <protofiles>             ; Comma separated list of proto files\n"
+      "    <type>                   ; Protocol buffer type name\n"
+      "    --proto_path             ; The search path of proto files\n"
+      "    --infile                 ; Input filename (defaults to stdin)\n"
+      "    --outfile                ; Output filename (defaults to stdout)\n");
+
+  FLAGS_protofiles = argv[0];
+  FLAGS_remotedb = false;
+  FLAGS_binary_input = true;
+  FLAGS_binary_output = false;
+  return ParseMessage(argc, argv, cred, callback);
+}
+
+bool GrpcTool::ToBinary(int argc, const char** argv, const CliCredentials& cred,
+                        GrpcToolOutputCallback callback) {
+  CommandUsage(
+      "Convert text message to binary\n"
+      "  grpc_cli tobinary <protofiles> <type> [<message>]\n"
+      "    <protofiles>             ; Comma separated list of proto files\n"
+      "    <type>                   ; Protocol buffer type name\n"
+      "    --proto_path             ; The search path of proto files\n"
+      "    --infile                 ; Input filename (defaults to stdin)\n"
+      "    --outfile                ; Output filename (defaults to stdout)\n");
+
+  FLAGS_protofiles = argv[0];
+  FLAGS_remotedb = false;
+  FLAGS_binary_input = false;
+  FLAGS_binary_output = true;
+  return ParseMessage(argc, argv, cred, callback);
+}
+
 }  // namespace testing
 }  // namespace grpc
diff --git a/test/cpp/util/grpc_tool_test.cc b/test/cpp/util/grpc_tool_test.cc
index 1ff8172306f69c9e57ae2623285d345c0359194e..33ce611a604d16bc18c117059cd535d2eff66cf4 100644
--- a/test/cpp/util/grpc_tool_test.cc
+++ b/test/cpp/util/grpc_tool_test.cc
@@ -86,9 +86,18 @@ using grpc::testing::EchoResponse;
   "  rpc Echo(grpc.testing.EchoRequest) returns (grpc.testing.EchoResponse) " \
   "{}\n"
 
+#define ECHO_RESPONSE_MESSAGE \
+  "message: \"echo\"\n"       \
+  "param {\n"                 \
+  "  host: \"localhost\"\n"   \
+  "  peer: \"peer\"\n"        \
+  "}\n\n"
+
 namespace grpc {
 namespace testing {
 
+DECLARE_bool(binary_input);
+DECLARE_bool(binary_output);
 DECLARE_bool(l);
 
 namespace {
@@ -338,6 +347,47 @@ TEST_F(GrpcToolTest, CallCommand) {
   ShutdownServer();
 }
 
+TEST_F(GrpcToolTest, ParseCommand) {
+  // Test input "grpc_cli parse localhost:<port> grpc.testing.EchoResponse
+  // ECHO_RESPONSE_MESSAGE"
+  std::stringstream output_stream;
+  std::stringstream binary_output_stream;
+
+  const grpc::string server_address = SetUpServer();
+  const char* argv[] = {"grpc_cli", "parse", server_address.c_str(),
+                        "grpc.testing.EchoResponse", ECHO_RESPONSE_MESSAGE};
+
+  FLAGS_binary_input = false;
+  FLAGS_binary_output = false;
+  EXPECT_TRUE(0 == GrpcToolMainLib(ArraySize(argv), argv, TestCliCredentials(),
+                                   std::bind(PrintStream, &output_stream,
+                                             std::placeholders::_1)));
+  // Expected output: ECHO_RESPONSE_MESSAGE
+  EXPECT_TRUE(0 == strcmp(output_stream.str().c_str(), ECHO_RESPONSE_MESSAGE));
+
+  // Parse text message to binary message and then parse it back to text message
+  output_stream.str(grpc::string());
+  output_stream.clear();
+  FLAGS_binary_output = true;
+  EXPECT_TRUE(0 == GrpcToolMainLib(ArraySize(argv), argv, TestCliCredentials(),
+                                   std::bind(PrintStream, &output_stream,
+                                             std::placeholders::_1)));
+  grpc::string binary_data = output_stream.str();
+  output_stream.str(grpc::string());
+  output_stream.clear();
+  argv[4] = binary_data.c_str();
+  FLAGS_binary_input = true;
+  FLAGS_binary_output = false;
+  EXPECT_TRUE(0 == GrpcToolMainLib(5, argv, TestCliCredentials(),
+                                   std::bind(PrintStream, &output_stream,
+                                             std::placeholders::_1)));
+
+  // Expected output: ECHO_RESPONSE_MESSAGE
+  EXPECT_TRUE(0 == strcmp(output_stream.str().c_str(), ECHO_RESPONSE_MESSAGE));
+
+  ShutdownServer();
+}
+
 TEST_F(GrpcToolTest, TooFewArguments) {
   // Test input "grpc_cli call Echo"
   std::stringstream output_stream;
diff --git a/test/cpp/util/test_credentials_provider.cc b/test/cpp/util/test_credentials_provider.cc
index 0456b9666710ceb0e4fb13ce1929d8653ef78cd9..909b02a7019fe426733f140fbb4b06c5c3ca9576 100644
--- a/test/cpp/util/test_credentials_provider.cc
+++ b/test/cpp/util/test_credentials_provider.cc
@@ -43,25 +43,9 @@
 #include "test/core/end2end/data/ssl_test_data.h"
 
 namespace grpc {
+namespace testing {
 namespace {
 
-using grpc::testing::CredentialTypeProvider;
-
-// Provide test credentials. Thread-safe.
-class CredentialsProvider {
- public:
-  virtual ~CredentialsProvider() {}
-
-  virtual void AddSecureType(
-      const grpc::string& type,
-      std::unique_ptr<CredentialTypeProvider> type_provider) = 0;
-  virtual std::shared_ptr<ChannelCredentials> GetChannelCredentials(
-      const grpc::string& type, ChannelArguments* args) = 0;
-  virtual std::shared_ptr<ServerCredentials> GetServerCredentials(
-      const grpc::string& type) = 0;
-  virtual std::vector<grpc::string> GetSecureCredentialsTypeList() = 0;
-};
-
 class DefaultCredentialsProvider : public CredentialsProvider {
  public:
   ~DefaultCredentialsProvider() override {}
@@ -145,37 +129,21 @@ class DefaultCredentialsProvider : public CredentialsProvider {
       added_secure_type_providers_;
 };
 
-gpr_once g_once_init_provider = GPR_ONCE_INIT;
 CredentialsProvider* g_provider = nullptr;
 
-void CreateDefaultProvider() { g_provider = new DefaultCredentialsProvider; }
-
-CredentialsProvider* GetProvider() {
-  gpr_once_init(&g_once_init_provider, &CreateDefaultProvider);
-  return g_provider;
-}
-
 }  // namespace
 
-namespace testing {
-
-void AddSecureType(const grpc::string& type,
-                   std::unique_ptr<CredentialTypeProvider> type_provider) {
-  GetProvider()->AddSecureType(type, std::move(type_provider));
-}
-
-std::shared_ptr<ChannelCredentials> GetChannelCredentials(
-    const grpc::string& type, ChannelArguments* args) {
-  return GetProvider()->GetChannelCredentials(type, args);
-}
-
-std::shared_ptr<ServerCredentials> GetServerCredentials(
-    const grpc::string& type) {
-  return GetProvider()->GetServerCredentials(type);
+CredentialsProvider* GetCredentialsProvider() {
+  if (g_provider == nullptr) {
+    g_provider = new DefaultCredentialsProvider;
+  }
+  return g_provider;
 }
 
-std::vector<grpc::string> GetSecureCredentialsTypeList() {
-  return GetProvider()->GetSecureCredentialsTypeList();
+void SetCredentialsProvider(CredentialsProvider* provider) {
+  // For now, forbids overriding provider.
+  GPR_ASSERT(g_provider == nullptr);
+  g_provider = provider;
 }
 
 }  // namespace testing
diff --git a/test/cpp/util/test_credentials_provider.h b/test/cpp/util/test_credentials_provider.h
index 1fb311e556e8c9ac6dc99b463a6a71fe56286244..0bc52ebe4dfa2d433ee14b6603ef33c4cedbe7d8 100644
--- a/test/cpp/util/test_credentials_provider.h
+++ b/test/cpp/util/test_credentials_provider.h
@@ -59,23 +59,39 @@ class CredentialTypeProvider {
   virtual std::shared_ptr<ServerCredentials> GetServerCredentials() = 0;
 };
 
-// Add a secure type in addition to the defaults above
-// (kInsecureCredentialsType, kTlsCredentialsType) that can be returned from the
-// functions below.
-void AddSecureType(const grpc::string& type,
-                   std::unique_ptr<CredentialTypeProvider> type_provider);
-
-// Provide channel credentials according to the given type. Alter the channel
-// arguments if needed.
-std::shared_ptr<ChannelCredentials> GetChannelCredentials(
-    const grpc::string& type, ChannelArguments* args);
-
-// Provide server credentials according to the given type.
-std::shared_ptr<ServerCredentials> GetServerCredentials(
-    const grpc::string& type);
-
-// Provide a list of secure credentials type.
-std::vector<grpc::string> GetSecureCredentialsTypeList();
+// Provide test credentials. Thread-safe.
+class CredentialsProvider {
+ public:
+  virtual ~CredentialsProvider() {}
+
+  // Add a secure type in addition to the defaults. The default provider has
+  // (kInsecureCredentialsType, kTlsCredentialsType).
+  virtual void AddSecureType(
+      const grpc::string& type,
+      std::unique_ptr<CredentialTypeProvider> type_provider) = 0;
+
+  // Provide channel credentials according to the given type. Alter the channel
+  // arguments if needed. Return nullptr if type is not registered.
+  virtual std::shared_ptr<ChannelCredentials> GetChannelCredentials(
+      const grpc::string& type, ChannelArguments* args) = 0;
+
+  // Provide server credentials according to the given type.
+  // Return nullptr if type is not registered.
+  virtual std::shared_ptr<ServerCredentials> GetServerCredentials(
+      const grpc::string& type) = 0;
+
+  // Provide a list of secure credentials type.
+  virtual std::vector<grpc::string> GetSecureCredentialsTypeList() = 0;
+};
+
+// Get the current provider. Create a default one if not set.
+// Not thread-safe.
+CredentialsProvider* GetCredentialsProvider();
+
+// Set the global provider. Takes ownership. The previous set provider will be
+// destroyed.
+// Not thread-safe.
+void SetCredentialsProvider(CredentialsProvider* provider);
 
 }  // namespace testing
 }  // namespace grpc
diff --git a/test/http2_test/http2_base_server.py b/test/http2_test/http2_base_server.py
new file mode 100644
index 0000000000000000000000000000000000000000..8de028ceb1b85a90c7e563eaf05fdff6088891f5
--- /dev/null
+++ b/test/http2_test/http2_base_server.py
@@ -0,0 +1,204 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import logging
+import messages_pb2
+import struct
+
+import h2
+import h2.connection
+import twisted
+import twisted.internet
+import twisted.internet.protocol
+
+_READ_CHUNK_SIZE = 16384
+_GRPC_HEADER_SIZE = 5
+
+class H2ProtocolBaseServer(twisted.internet.protocol.Protocol):
+  def __init__(self):
+    self._conn = h2.connection.H2Connection(client_side=False)
+    self._recv_buffer = {}
+    self._handlers = {}
+    self._handlers['ConnectionMade'] = self.on_connection_made_default
+    self._handlers['DataReceived'] = self.on_data_received_default
+    self._handlers['WindowUpdated'] = self.on_window_update_default
+    self._handlers['RequestReceived'] = self.on_request_received_default
+    self._handlers['SendDone'] = self.on_send_done_default
+    self._handlers['ConnectionLost'] = self.on_connection_lost
+    self._handlers['PingAcknowledged'] = self.on_ping_acknowledged_default
+    self._stream_status = {}
+    self._send_remaining = {}
+    self._outstanding_pings = 0
+
+  def set_handlers(self, handlers):
+    self._handlers = handlers
+
+  def connectionMade(self):
+    self._handlers['ConnectionMade']()
+
+  def connectionLost(self, reason):
+    self._handlers['ConnectionLost'](reason)
+
+  def on_connection_made_default(self):
+    logging.info('Connection Made')
+    self._conn.initiate_connection()
+    self.transport.setTcpNoDelay(True)
+    self.transport.write(self._conn.data_to_send())
+
+  def on_connection_lost(self, reason):
+    logging.info('Disconnected %s' % reason)
+
+  def dataReceived(self, data):
+    try:
+      events = self._conn.receive_data(data)
+    except h2.exceptions.ProtocolError:
+      # this try/except block catches exceptions due to race between sending
+      # GOAWAY and processing a response in flight.
+      return
+    if self._conn.data_to_send:
+      self.transport.write(self._conn.data_to_send())
+    for event in events:
+      if isinstance(event, h2.events.RequestReceived) and self._handlers.has_key('RequestReceived'):
+        logging.info('RequestReceived Event for stream: %d' % event.stream_id)
+        self._handlers['RequestReceived'](event)
+      elif isinstance(event, h2.events.DataReceived) and self._handlers.has_key('DataReceived'):
+        logging.info('DataReceived Event for stream: %d' % event.stream_id)
+        self._handlers['DataReceived'](event)
+      elif isinstance(event, h2.events.WindowUpdated) and self._handlers.has_key('WindowUpdated'):
+        logging.info('WindowUpdated Event for stream: %d' % event.stream_id)
+        self._handlers['WindowUpdated'](event)
+      elif isinstance(event, h2.events.PingAcknowledged) and self._handlers.has_key('PingAcknowledged'):
+        logging.info('PingAcknowledged Event')
+        self._handlers['PingAcknowledged'](event)
+    self.transport.write(self._conn.data_to_send())
+
+  def on_ping_acknowledged_default(self, event):
+    logging.info('ping acknowledged')
+    self._outstanding_pings -= 1
+
+  def on_data_received_default(self, event):
+    self._conn.acknowledge_received_data(len(event.data), event.stream_id)
+    self._recv_buffer[event.stream_id] += event.data
+
+  def on_request_received_default(self, event):
+    self._recv_buffer[event.stream_id] = ''
+    self._stream_id = event.stream_id
+    self._stream_status[event.stream_id] = True
+    self._conn.send_headers(
+      stream_id=event.stream_id,
+      headers=[
+          (':status', '200'),
+          ('content-type', 'application/grpc'),
+          ('grpc-encoding', 'identity'),
+          ('grpc-accept-encoding', 'identity,deflate,gzip'),
+      ],
+    )
+    self.transport.write(self._conn.data_to_send())
+
+  def on_window_update_default(self, event):
+    # send pending data, if any
+    self.default_send(event.stream_id)
+
+  def send_reset_stream(self):
+    self._conn.reset_stream(self._stream_id)
+    self.transport.write(self._conn.data_to_send())
+
+  def setup_send(self, data_to_send, stream_id):
+    logging.info('Setting up data to send for stream_id: %d' % stream_id)
+    self._send_remaining[stream_id] = len(data_to_send)
+    self._send_offset = 0
+    self._data_to_send = data_to_send
+    self.default_send(stream_id)
+
+  def default_send(self, stream_id):
+    if not self._send_remaining.has_key(stream_id):
+      # not setup to send data yet
+      return
+
+    while self._send_remaining[stream_id] > 0:
+      lfcw = self._conn.local_flow_control_window(stream_id)
+      if lfcw == 0:
+        break
+      chunk_size = min(lfcw, _READ_CHUNK_SIZE)
+      bytes_to_send = min(chunk_size, self._send_remaining[stream_id])
+      logging.info('flow_control_window = %d. sending [%d:%d] stream_id %d' %
+                    (lfcw, self._send_offset, self._send_offset + bytes_to_send,
+                    stream_id))
+      data = self._data_to_send[self._send_offset : self._send_offset + bytes_to_send]
+      try:
+        self._conn.send_data(stream_id, data, False)
+      except h2.exceptions.ProtocolError:
+        logging.info('Stream %d is closed' % stream_id)
+        break
+      self._send_remaining[stream_id] -= bytes_to_send
+      self._send_offset += bytes_to_send
+      if self._send_remaining[stream_id] == 0:
+        self._handlers['SendDone'](stream_id)
+
+  def default_ping(self):
+    logging.info('sending ping')
+    self._outstanding_pings += 1
+    self._conn.ping(b'\x00'*8)
+    self.transport.write(self._conn.data_to_send())
+
+  def on_send_done_default(self, stream_id):
+    if self._stream_status[stream_id]:
+      self._stream_status[stream_id] = False
+      self.default_send_trailer(stream_id)
+    else:
+      logging.error('Stream %d is already closed' % stream_id)
+
+  def default_send_trailer(self, stream_id):
+    logging.info('Sending trailer for stream id %d' % stream_id)
+    self._conn.send_headers(stream_id,
+      headers=[ ('grpc-status', '0') ],
+      end_stream=True
+    )
+    self.transport.write(self._conn.data_to_send())
+
+  @staticmethod
+  def default_response_data(response_size):
+    sresp = messages_pb2.SimpleResponse()
+    sresp.payload.body = b'\x00'*response_size
+    serialized_resp_proto = sresp.SerializeToString()
+    response_data = b'\x00' + struct.pack('i', len(serialized_resp_proto))[::-1] + serialized_resp_proto
+    return response_data
+
+  def parse_received_data(self, stream_id):
+    """ returns a grpc framed string of bytes containing response proto of the size
+    asked in request """
+    recv_buffer = self._recv_buffer[stream_id]
+    grpc_msg_size = struct.unpack('i',recv_buffer[1:5][::-1])[0]
+    if len(recv_buffer) != _GRPC_HEADER_SIZE + grpc_msg_size:
+      return None
+    req_proto_str = recv_buffer[5:5+grpc_msg_size]
+    sr = messages_pb2.SimpleRequest()
+    sr.ParseFromString(req_proto_str)
+    logging.info('Parsed request for stream %d: response_size=%s' % (stream_id, sr.response_size))
+    return sr
diff --git a/test/http2_test/http2_test_server.py b/test/http2_test/http2_test_server.py
new file mode 100644
index 0000000000000000000000000000000000000000..abde3433ad22782ab1757c52650e6575f4e8d014
--- /dev/null
+++ b/test/http2_test/http2_test_server.py
@@ -0,0 +1,104 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""HTTP2 Test Server"""
+
+import argparse
+import logging
+import twisted
+import twisted.internet
+import twisted.internet.endpoints
+import twisted.internet.reactor
+
+import http2_base_server
+import test_goaway
+import test_max_streams
+import test_ping
+import test_rst_after_data
+import test_rst_after_header
+import test_rst_during_data
+
+_TEST_CASE_MAPPING = {
+  'rst_after_header': test_rst_after_header.TestcaseRstStreamAfterHeader,
+  'rst_after_data': test_rst_after_data.TestcaseRstStreamAfterData,
+  'rst_during_data': test_rst_during_data.TestcaseRstStreamDuringData,
+  'goaway': test_goaway.TestcaseGoaway,
+  'ping': test_ping.TestcasePing,
+  'max_streams': test_max_streams.TestcaseSettingsMaxStreams,
+}
+
+class H2Factory(twisted.internet.protocol.Factory):
+  def __init__(self, testcase):
+    logging.info('Creating H2Factory for new connection.')
+    self._num_streams = 0
+    self._testcase = testcase
+
+  def buildProtocol(self, addr):
+    self._num_streams += 1
+    logging.info('New Connection: %d' % self._num_streams)
+    if not _TEST_CASE_MAPPING.has_key(self._testcase):
+      logging.error('Unknown test case: %s' % self._testcase)
+      assert(0)
+    else:
+      t = _TEST_CASE_MAPPING[self._testcase]
+
+    if self._testcase == 'goaway':
+      return t(self._num_streams).get_base_server()
+    else:
+      return t().get_base_server()
+
+def parse_arguments():
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--base_port', type=int, default=8080,
+    help='base port to run the servers (default: 8080). One test server is '
+    'started on each incrementing port, beginning with base_port, in the '
+    'following order: goaway,max_streams,ping,rst_after_data,rst_after_header,'
+    'rst_during_data'
+    )
+  return parser.parse_args()
+
+def start_test_servers(base_port):
+  """ Start one server per test case on incrementing port numbers
+  beginning with base_port """
+  index = 0
+  for test_case in sorted(_TEST_CASE_MAPPING.keys()):
+    portnum = base_port + index
+    logging.warning('serving on port %d : %s'%(portnum, test_case))
+    endpoint = twisted.internet.endpoints.TCP4ServerEndpoint(
+      twisted.internet.reactor, portnum, backlog=128)
+    endpoint.listen(H2Factory(test_case))
+    index += 1
+
+if __name__ == '__main__':
+  logging.basicConfig(
+    format='%(levelname) -10s %(asctime)s %(module)s:%(lineno)s | %(message)s',
+    level=logging.INFO)
+  args = parse_arguments()
+  start_test_servers(args.base_port)
+  twisted.internet.reactor.run()
diff --git a/test/http2_test/messages_pb2.py b/test/http2_test/messages_pb2.py
new file mode 100644
index 0000000000000000000000000000000000000000..86cf5a8970fc670640e0ba29c3c0035be4a43feb
--- /dev/null
+++ b/test/http2_test/messages_pb2.py
@@ -0,0 +1,661 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: messages.proto
+
+import sys
+_b=sys.version_info[0]<3 and (lambda x:x) or (lambda x:x.encode('latin1'))
+from google.protobuf.internal import enum_type_wrapper
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import message as _message
+from google.protobuf import reflection as _reflection
+from google.protobuf import symbol_database as _symbol_database
+from google.protobuf import descriptor_pb2
+# @@protoc_insertion_point(imports)
+
+_sym_db = _symbol_database.Default()
+
+
+
+
+DESCRIPTOR = _descriptor.FileDescriptor(
+  name='messages.proto',
+  package='grpc.testing',
+  syntax='proto3',
+  serialized_pb=_b('\n\x0emessages.proto\x12\x0cgrpc.testing\"\x1a\n\tBoolValue\x12\r\n\x05value\x18\x01 \x01(\x08\"@\n\x07Payload\x12\'\n\x04type\x18\x01 \x01(\x0e\x32\x19.grpc.testing.PayloadType\x12\x0c\n\x04\x62ody\x18\x02 \x01(\x0c\"+\n\nEchoStatus\x12\x0c\n\x04\x63ode\x18\x01 \x01(\x05\x12\x0f\n\x07message\x18\x02 \x01(\t\"\xce\x02\n\rSimpleRequest\x12\x30\n\rresponse_type\x18\x01 \x01(\x0e\x32\x19.grpc.testing.PayloadType\x12\x15\n\rresponse_size\x18\x02 \x01(\x05\x12&\n\x07payload\x18\x03 \x01(\x0b\x32\x15.grpc.testing.Payload\x12\x15\n\rfill_username\x18\x04 \x01(\x08\x12\x18\n\x10\x66ill_oauth_scope\x18\x05 \x01(\x08\x12\x34\n\x13response_compressed\x18\x06 \x01(\x0b\x32\x17.grpc.testing.BoolValue\x12\x31\n\x0fresponse_status\x18\x07 \x01(\x0b\x32\x18.grpc.testing.EchoStatus\x12\x32\n\x11\x65xpect_compressed\x18\x08 \x01(\x0b\x32\x17.grpc.testing.BoolValue\"_\n\x0eSimpleResponse\x12&\n\x07payload\x18\x01 \x01(\x0b\x32\x15.grpc.testing.Payload\x12\x10\n\x08username\x18\x02 \x01(\t\x12\x13\n\x0boauth_scope\x18\x03 \x01(\t\"w\n\x19StreamingInputCallRequest\x12&\n\x07payload\x18\x01 \x01(\x0b\x32\x15.grpc.testing.Payload\x12\x32\n\x11\x65xpect_compressed\x18\x02 \x01(\x0b\x32\x17.grpc.testing.BoolValue\"=\n\x1aStreamingInputCallResponse\x12\x1f\n\x17\x61ggregated_payload_size\x18\x01 \x01(\x05\"d\n\x12ResponseParameters\x12\x0c\n\x04size\x18\x01 \x01(\x05\x12\x13\n\x0binterval_us\x18\x02 \x01(\x05\x12+\n\ncompressed\x18\x03 \x01(\x0b\x32\x17.grpc.testing.BoolValue\"\xe8\x01\n\x1aStreamingOutputCallRequest\x12\x30\n\rresponse_type\x18\x01 \x01(\x0e\x32\x19.grpc.testing.PayloadType\x12=\n\x13response_parameters\x18\x02 \x03(\x0b\x32 .grpc.testing.ResponseParameters\x12&\n\x07payload\x18\x03 \x01(\x0b\x32\x15.grpc.testing.Payload\x12\x31\n\x0fresponse_status\x18\x07 \x01(\x0b\x32\x18.grpc.testing.EchoStatus\"E\n\x1bStreamingOutputCallResponse\x12&\n\x07payload\x18\x01 \x01(\x0b\x32\x15.grpc.testing.Payload\"3\n\x0fReconnectParams\x12 \n\x18max_reconnect_backoff_ms\x18\x01 \x01(\x05\"3\n\rReconnectInfo\x12\x0e\n\x06passed\x18\x01 \x01(\x08\x12\x12\n\nbackoff_ms\x18\x02 \x03(\x05*\x1f\n\x0bPayloadType\x12\x10\n\x0c\x43OMPRESSABLE\x10\x00\x62\x06proto3')
+)
+_sym_db.RegisterFileDescriptor(DESCRIPTOR)
+
+_PAYLOADTYPE = _descriptor.EnumDescriptor(
+  name='PayloadType',
+  full_name='grpc.testing.PayloadType',
+  filename=None,
+  file=DESCRIPTOR,
+  values=[
+    _descriptor.EnumValueDescriptor(
+      name='COMPRESSABLE', index=0, number=0,
+      options=None,
+      type=None),
+  ],
+  containing_type=None,
+  options=None,
+  serialized_start=1303,
+  serialized_end=1334,
+)
+_sym_db.RegisterEnumDescriptor(_PAYLOADTYPE)
+
+PayloadType = enum_type_wrapper.EnumTypeWrapper(_PAYLOADTYPE)
+COMPRESSABLE = 0
+
+
+
+_BOOLVALUE = _descriptor.Descriptor(
+  name='BoolValue',
+  full_name='grpc.testing.BoolValue',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='value', full_name='grpc.testing.BoolValue.value', index=0,
+      number=1, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=32,
+  serialized_end=58,
+)
+
+
+_PAYLOAD = _descriptor.Descriptor(
+  name='Payload',
+  full_name='grpc.testing.Payload',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='type', full_name='grpc.testing.Payload.type', index=0,
+      number=1, type=14, cpp_type=8, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='body', full_name='grpc.testing.Payload.body', index=1,
+      number=2, type=12, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b(""),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=60,
+  serialized_end=124,
+)
+
+
+_ECHOSTATUS = _descriptor.Descriptor(
+  name='EchoStatus',
+  full_name='grpc.testing.EchoStatus',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='code', full_name='grpc.testing.EchoStatus.code', index=0,
+      number=1, type=5, cpp_type=1, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='message', full_name='grpc.testing.EchoStatus.message', index=1,
+      number=2, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=126,
+  serialized_end=169,
+)
+
+
+_SIMPLEREQUEST = _descriptor.Descriptor(
+  name='SimpleRequest',
+  full_name='grpc.testing.SimpleRequest',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='response_type', full_name='grpc.testing.SimpleRequest.response_type', index=0,
+      number=1, type=14, cpp_type=8, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='response_size', full_name='grpc.testing.SimpleRequest.response_size', index=1,
+      number=2, type=5, cpp_type=1, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='payload', full_name='grpc.testing.SimpleRequest.payload', index=2,
+      number=3, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='fill_username', full_name='grpc.testing.SimpleRequest.fill_username', index=3,
+      number=4, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='fill_oauth_scope', full_name='grpc.testing.SimpleRequest.fill_oauth_scope', index=4,
+      number=5, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='response_compressed', full_name='grpc.testing.SimpleRequest.response_compressed', index=5,
+      number=6, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='response_status', full_name='grpc.testing.SimpleRequest.response_status', index=6,
+      number=7, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='expect_compressed', full_name='grpc.testing.SimpleRequest.expect_compressed', index=7,
+      number=8, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=172,
+  serialized_end=506,
+)
+
+
+_SIMPLERESPONSE = _descriptor.Descriptor(
+  name='SimpleResponse',
+  full_name='grpc.testing.SimpleResponse',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='payload', full_name='grpc.testing.SimpleResponse.payload', index=0,
+      number=1, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='username', full_name='grpc.testing.SimpleResponse.username', index=1,
+      number=2, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='oauth_scope', full_name='grpc.testing.SimpleResponse.oauth_scope', index=2,
+      number=3, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=508,
+  serialized_end=603,
+)
+
+
+_STREAMINGINPUTCALLREQUEST = _descriptor.Descriptor(
+  name='StreamingInputCallRequest',
+  full_name='grpc.testing.StreamingInputCallRequest',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='payload', full_name='grpc.testing.StreamingInputCallRequest.payload', index=0,
+      number=1, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='expect_compressed', full_name='grpc.testing.StreamingInputCallRequest.expect_compressed', index=1,
+      number=2, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=605,
+  serialized_end=724,
+)
+
+
+_STREAMINGINPUTCALLRESPONSE = _descriptor.Descriptor(
+  name='StreamingInputCallResponse',
+  full_name='grpc.testing.StreamingInputCallResponse',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='aggregated_payload_size', full_name='grpc.testing.StreamingInputCallResponse.aggregated_payload_size', index=0,
+      number=1, type=5, cpp_type=1, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=726,
+  serialized_end=787,
+)
+
+
+_RESPONSEPARAMETERS = _descriptor.Descriptor(
+  name='ResponseParameters',
+  full_name='grpc.testing.ResponseParameters',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='size', full_name='grpc.testing.ResponseParameters.size', index=0,
+      number=1, type=5, cpp_type=1, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='interval_us', full_name='grpc.testing.ResponseParameters.interval_us', index=1,
+      number=2, type=5, cpp_type=1, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='compressed', full_name='grpc.testing.ResponseParameters.compressed', index=2,
+      number=3, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=789,
+  serialized_end=889,
+)
+
+
+_STREAMINGOUTPUTCALLREQUEST = _descriptor.Descriptor(
+  name='StreamingOutputCallRequest',
+  full_name='grpc.testing.StreamingOutputCallRequest',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='response_type', full_name='grpc.testing.StreamingOutputCallRequest.response_type', index=0,
+      number=1, type=14, cpp_type=8, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='response_parameters', full_name='grpc.testing.StreamingOutputCallRequest.response_parameters', index=1,
+      number=2, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='payload', full_name='grpc.testing.StreamingOutputCallRequest.payload', index=2,
+      number=3, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='response_status', full_name='grpc.testing.StreamingOutputCallRequest.response_status', index=3,
+      number=7, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=892,
+  serialized_end=1124,
+)
+
+
+_STREAMINGOUTPUTCALLRESPONSE = _descriptor.Descriptor(
+  name='StreamingOutputCallResponse',
+  full_name='grpc.testing.StreamingOutputCallResponse',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='payload', full_name='grpc.testing.StreamingOutputCallResponse.payload', index=0,
+      number=1, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=1126,
+  serialized_end=1195,
+)
+
+
+_RECONNECTPARAMS = _descriptor.Descriptor(
+  name='ReconnectParams',
+  full_name='grpc.testing.ReconnectParams',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='max_reconnect_backoff_ms', full_name='grpc.testing.ReconnectParams.max_reconnect_backoff_ms', index=0,
+      number=1, type=5, cpp_type=1, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=1197,
+  serialized_end=1248,
+)
+
+
+_RECONNECTINFO = _descriptor.Descriptor(
+  name='ReconnectInfo',
+  full_name='grpc.testing.ReconnectInfo',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='passed', full_name='grpc.testing.ReconnectInfo.passed', index=0,
+      number=1, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='backoff_ms', full_name='grpc.testing.ReconnectInfo.backoff_ms', index=1,
+      number=2, type=5, cpp_type=1, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=1250,
+  serialized_end=1301,
+)
+
+_PAYLOAD.fields_by_name['type'].enum_type = _PAYLOADTYPE
+_SIMPLEREQUEST.fields_by_name['response_type'].enum_type = _PAYLOADTYPE
+_SIMPLEREQUEST.fields_by_name['payload'].message_type = _PAYLOAD
+_SIMPLEREQUEST.fields_by_name['response_compressed'].message_type = _BOOLVALUE
+_SIMPLEREQUEST.fields_by_name['response_status'].message_type = _ECHOSTATUS
+_SIMPLEREQUEST.fields_by_name['expect_compressed'].message_type = _BOOLVALUE
+_SIMPLERESPONSE.fields_by_name['payload'].message_type = _PAYLOAD
+_STREAMINGINPUTCALLREQUEST.fields_by_name['payload'].message_type = _PAYLOAD
+_STREAMINGINPUTCALLREQUEST.fields_by_name['expect_compressed'].message_type = _BOOLVALUE
+_RESPONSEPARAMETERS.fields_by_name['compressed'].message_type = _BOOLVALUE
+_STREAMINGOUTPUTCALLREQUEST.fields_by_name['response_type'].enum_type = _PAYLOADTYPE
+_STREAMINGOUTPUTCALLREQUEST.fields_by_name['response_parameters'].message_type = _RESPONSEPARAMETERS
+_STREAMINGOUTPUTCALLREQUEST.fields_by_name['payload'].message_type = _PAYLOAD
+_STREAMINGOUTPUTCALLREQUEST.fields_by_name['response_status'].message_type = _ECHOSTATUS
+_STREAMINGOUTPUTCALLRESPONSE.fields_by_name['payload'].message_type = _PAYLOAD
+DESCRIPTOR.message_types_by_name['BoolValue'] = _BOOLVALUE
+DESCRIPTOR.message_types_by_name['Payload'] = _PAYLOAD
+DESCRIPTOR.message_types_by_name['EchoStatus'] = _ECHOSTATUS
+DESCRIPTOR.message_types_by_name['SimpleRequest'] = _SIMPLEREQUEST
+DESCRIPTOR.message_types_by_name['SimpleResponse'] = _SIMPLERESPONSE
+DESCRIPTOR.message_types_by_name['StreamingInputCallRequest'] = _STREAMINGINPUTCALLREQUEST
+DESCRIPTOR.message_types_by_name['StreamingInputCallResponse'] = _STREAMINGINPUTCALLRESPONSE
+DESCRIPTOR.message_types_by_name['ResponseParameters'] = _RESPONSEPARAMETERS
+DESCRIPTOR.message_types_by_name['StreamingOutputCallRequest'] = _STREAMINGOUTPUTCALLREQUEST
+DESCRIPTOR.message_types_by_name['StreamingOutputCallResponse'] = _STREAMINGOUTPUTCALLRESPONSE
+DESCRIPTOR.message_types_by_name['ReconnectParams'] = _RECONNECTPARAMS
+DESCRIPTOR.message_types_by_name['ReconnectInfo'] = _RECONNECTINFO
+DESCRIPTOR.enum_types_by_name['PayloadType'] = _PAYLOADTYPE
+
+BoolValue = _reflection.GeneratedProtocolMessageType('BoolValue', (_message.Message,), dict(
+  DESCRIPTOR = _BOOLVALUE,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.BoolValue)
+  ))
+_sym_db.RegisterMessage(BoolValue)
+
+Payload = _reflection.GeneratedProtocolMessageType('Payload', (_message.Message,), dict(
+  DESCRIPTOR = _PAYLOAD,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.Payload)
+  ))
+_sym_db.RegisterMessage(Payload)
+
+EchoStatus = _reflection.GeneratedProtocolMessageType('EchoStatus', (_message.Message,), dict(
+  DESCRIPTOR = _ECHOSTATUS,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.EchoStatus)
+  ))
+_sym_db.RegisterMessage(EchoStatus)
+
+SimpleRequest = _reflection.GeneratedProtocolMessageType('SimpleRequest', (_message.Message,), dict(
+  DESCRIPTOR = _SIMPLEREQUEST,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.SimpleRequest)
+  ))
+_sym_db.RegisterMessage(SimpleRequest)
+
+SimpleResponse = _reflection.GeneratedProtocolMessageType('SimpleResponse', (_message.Message,), dict(
+  DESCRIPTOR = _SIMPLERESPONSE,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.SimpleResponse)
+  ))
+_sym_db.RegisterMessage(SimpleResponse)
+
+StreamingInputCallRequest = _reflection.GeneratedProtocolMessageType('StreamingInputCallRequest', (_message.Message,), dict(
+  DESCRIPTOR = _STREAMINGINPUTCALLREQUEST,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.StreamingInputCallRequest)
+  ))
+_sym_db.RegisterMessage(StreamingInputCallRequest)
+
+StreamingInputCallResponse = _reflection.GeneratedProtocolMessageType('StreamingInputCallResponse', (_message.Message,), dict(
+  DESCRIPTOR = _STREAMINGINPUTCALLRESPONSE,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.StreamingInputCallResponse)
+  ))
+_sym_db.RegisterMessage(StreamingInputCallResponse)
+
+ResponseParameters = _reflection.GeneratedProtocolMessageType('ResponseParameters', (_message.Message,), dict(
+  DESCRIPTOR = _RESPONSEPARAMETERS,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.ResponseParameters)
+  ))
+_sym_db.RegisterMessage(ResponseParameters)
+
+StreamingOutputCallRequest = _reflection.GeneratedProtocolMessageType('StreamingOutputCallRequest', (_message.Message,), dict(
+  DESCRIPTOR = _STREAMINGOUTPUTCALLREQUEST,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.StreamingOutputCallRequest)
+  ))
+_sym_db.RegisterMessage(StreamingOutputCallRequest)
+
+StreamingOutputCallResponse = _reflection.GeneratedProtocolMessageType('StreamingOutputCallResponse', (_message.Message,), dict(
+  DESCRIPTOR = _STREAMINGOUTPUTCALLRESPONSE,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.StreamingOutputCallResponse)
+  ))
+_sym_db.RegisterMessage(StreamingOutputCallResponse)
+
+ReconnectParams = _reflection.GeneratedProtocolMessageType('ReconnectParams', (_message.Message,), dict(
+  DESCRIPTOR = _RECONNECTPARAMS,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.ReconnectParams)
+  ))
+_sym_db.RegisterMessage(ReconnectParams)
+
+ReconnectInfo = _reflection.GeneratedProtocolMessageType('ReconnectInfo', (_message.Message,), dict(
+  DESCRIPTOR = _RECONNECTINFO,
+  __module__ = 'messages_pb2'
+  # @@protoc_insertion_point(class_scope:grpc.testing.ReconnectInfo)
+  ))
+_sym_db.RegisterMessage(ReconnectInfo)
+
+
+# @@protoc_insertion_point(module_scope)
diff --git a/test/http2_test/test_goaway.py b/test/http2_test/test_goaway.py
new file mode 100644
index 0000000000000000000000000000000000000000..61f4beb74aa5f02036289106d0fd3b2f3cb0e994
--- /dev/null
+++ b/test/http2_test/test_goaway.py
@@ -0,0 +1,77 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import logging
+import time
+
+import http2_base_server
+
+class TestcaseGoaway(object):
+  """ 
+    This test does the following:
+      Process incoming request normally, i.e. send headers, data and trailers.
+      Then send a GOAWAY frame with the stream id of the processed request.
+      It checks that the next request is made on a different TCP connection.
+  """
+  def __init__(self, iteration):
+    self._base_server = http2_base_server.H2ProtocolBaseServer()
+    self._base_server._handlers['RequestReceived'] = self.on_request_received
+    self._base_server._handlers['DataReceived'] = self.on_data_received
+    self._base_server._handlers['SendDone'] = self.on_send_done
+    self._base_server._handlers['ConnectionLost'] = self.on_connection_lost
+    self._ready_to_send = False
+    self._iteration = iteration
+
+  def get_base_server(self):
+    return self._base_server
+
+  def on_connection_lost(self, reason):
+    logging.info('Disconnect received. Count %d' % self._iteration)
+    # _iteration == 2 => Two different connections have been used.
+    if self._iteration == 2:
+      self._base_server.on_connection_lost(reason)
+
+  def on_send_done(self, stream_id):
+    self._base_server.on_send_done_default(stream_id)
+    logging.info('Sending GOAWAY for stream %d:' % stream_id)
+    self._base_server._conn.close_connection(error_code=0, additional_data=None, last_stream_id=stream_id)
+    self._base_server._stream_status[stream_id] = False
+
+  def on_request_received(self, event):
+    self._ready_to_send = False
+    self._base_server.on_request_received_default(event)
+
+  def on_data_received(self, event):
+    self._base_server.on_data_received_default(event)
+    sr = self._base_server.parse_received_data(event.stream_id)
+    if sr:
+      logging.info('Creating response size = %s' % sr.response_size)
+      response_data = self._base_server.default_response_data(sr.response_size)
+      self._ready_to_send = True
+      self._base_server.setup_send(response_data, event.stream_id)
diff --git a/test/http2_test/test_max_streams.py b/test/http2_test/test_max_streams.py
new file mode 100644
index 0000000000000000000000000000000000000000..9942b1bb9aaa168e38555fa8f6ec72a60e9888e3
--- /dev/null
+++ b/test/http2_test/test_max_streams.py
@@ -0,0 +1,63 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import hyperframe.frame
+import logging
+
+import http2_base_server
+
+class TestcaseSettingsMaxStreams(object):
+  """
+    This test sets MAX_CONCURRENT_STREAMS to 1 and asserts that at any point
+    only 1 stream is active.
+  """
+  def __init__(self):
+    self._base_server = http2_base_server.H2ProtocolBaseServer()
+    self._base_server._handlers['DataReceived'] = self.on_data_received
+    self._base_server._handlers['ConnectionMade'] = self.on_connection_made
+
+  def get_base_server(self):
+    return self._base_server
+
+  def on_connection_made(self):
+    logging.info('Connection Made')
+    self._base_server._conn.initiate_connection()
+    self._base_server._conn.update_settings(
+                  {hyperframe.frame.SettingsFrame.MAX_CONCURRENT_STREAMS: 1})
+    self._base_server.transport.setTcpNoDelay(True)
+    self._base_server.transport.write(self._base_server._conn.data_to_send())
+
+  def on_data_received(self, event):
+    self._base_server.on_data_received_default(event)
+    sr = self._base_server.parse_received_data(event.stream_id)
+    if sr:
+      logging.info('Creating response of size = %s' % sr.response_size)
+      response_data = self._base_server.default_response_data(sr.response_size)
+      self._base_server.setup_send(response_data, event.stream_id)
+    # TODO (makdharma): Add assertion to check number of live streams
diff --git a/test/http2_test/test_ping.py b/test/http2_test/test_ping.py
new file mode 100644
index 0000000000000000000000000000000000000000..da41fd01bbe332447ebec26e86517c6eddac235f
--- /dev/null
+++ b/test/http2_test/test_ping.py
@@ -0,0 +1,67 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import logging
+
+import http2_base_server
+
+class TestcasePing(object):
+  """
+    This test injects PING frames before and after header and data. Keeps count
+    of outstanding ping response and asserts when the count is non-zero at the
+    end of the test.
+  """
+  def __init__(self):
+    self._base_server = http2_base_server.H2ProtocolBaseServer()
+    self._base_server._handlers['RequestReceived'] = self.on_request_received
+    self._base_server._handlers['DataReceived'] = self.on_data_received
+    self._base_server._handlers['ConnectionLost'] = self.on_connection_lost
+
+  def get_base_server(self):
+    return self._base_server
+
+  def on_request_received(self, event):
+    self._base_server.default_ping()
+    self._base_server.on_request_received_default(event)
+    self._base_server.default_ping()
+
+  def on_data_received(self, event):
+    self._base_server.on_data_received_default(event)
+    sr = self._base_server.parse_received_data(event.stream_id)
+    if sr:
+      logging.info('Creating response size = %s' % sr.response_size)
+      response_data = self._base_server.default_response_data(sr.response_size)
+      self._base_server.default_ping()
+      self._base_server.setup_send(response_data, event.stream_id)
+      self._base_server.default_ping()
+
+  def on_connection_lost(self, reason):
+    logging.info('Disconnect received. Ping Count %d' % self._base_server._outstanding_pings)
+    assert(self._base_server._outstanding_pings == 0)
+    self._base_server.on_connection_lost(reason)
diff --git a/test/http2_test/test_rst_after_data.py b/test/http2_test/test_rst_after_data.py
new file mode 100644
index 0000000000000000000000000000000000000000..92360253951769e9387b7183656427830cc85f82
--- /dev/null
+++ b/test/http2_test/test_rst_after_data.py
@@ -0,0 +1,57 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import http2_base_server
+
+class TestcaseRstStreamAfterData(object):
+  """
+    In response to an incoming request, this test sends headers, followed by
+    data, followed by a reset stream frame. Client asserts that the RPC failed.
+    Client needs to deliver the complete message to the application layer.
+  """
+  def __init__(self):
+    self._base_server = http2_base_server.H2ProtocolBaseServer()
+    self._base_server._handlers['DataReceived'] = self.on_data_received
+    self._base_server._handlers['SendDone'] = self.on_send_done
+
+  def get_base_server(self):
+    return self._base_server
+
+  def on_data_received(self, event):
+    self._base_server.on_data_received_default(event)
+    sr = self._base_server.parse_received_data(event.stream_id)
+    if sr:
+      response_data = self._base_server.default_response_data(sr.response_size)
+      self._ready_to_send = True
+      self._base_server.setup_send(response_data, event.stream_id)
+      # send reset stream
+
+  def on_send_done(self, stream_id):
+    self._base_server.send_reset_stream()
+    self._base_server._stream_status[stream_id] = False
diff --git a/test/http2_test/test_rst_after_header.py b/test/http2_test/test_rst_after_header.py
new file mode 100644
index 0000000000000000000000000000000000000000..41e1adb8adff60da1116eece48ad43a6cfa6e9a4
--- /dev/null
+++ b/test/http2_test/test_rst_after_header.py
@@ -0,0 +1,48 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import http2_base_server
+
+class TestcaseRstStreamAfterHeader(object):
+  """
+    In response to an incoming request, this test sends headers, followed by
+    a reset stream frame. Client asserts that the RPC failed.
+  """
+  def __init__(self):
+    self._base_server = http2_base_server.H2ProtocolBaseServer()
+    self._base_server._handlers['RequestReceived'] = self.on_request_received
+
+  def get_base_server(self):
+    return self._base_server
+
+  def on_request_received(self, event):
+    # send initial headers
+    self._base_server.on_request_received_default(event)
+    # send reset stream
+    self._base_server.send_reset_stream()
diff --git a/test/http2_test/test_rst_during_data.py b/test/http2_test/test_rst_during_data.py
new file mode 100644
index 0000000000000000000000000000000000000000..7c859db267af3c2c7316c3689ad152d2edd35e99
--- /dev/null
+++ b/test/http2_test/test_rst_during_data.py
@@ -0,0 +1,58 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import http2_base_server
+
+class TestcaseRstStreamDuringData(object):
+  """
+    In response to an incoming request, this test sends headers, followed by
+    some data, followed by a reset stream frame. Client asserts that the RPC
+    failed and does not deliver the message to the application.
+  """
+  def __init__(self):
+    self._base_server = http2_base_server.H2ProtocolBaseServer()
+    self._base_server._handlers['DataReceived'] = self.on_data_received
+    self._base_server._handlers['SendDone'] = self.on_send_done
+
+  def get_base_server(self):
+    return self._base_server
+
+  def on_data_received(self, event):
+    self._base_server.on_data_received_default(event)
+    sr = self._base_server.parse_received_data(event.stream_id)
+    if sr:
+      response_data = self._base_server.default_response_data(sr.response_size)
+      self._ready_to_send = True
+      response_len = len(response_data)
+      truncated_response_data = response_data[0:response_len/2]
+      self._base_server.setup_send(truncated_response_data, event.stream_id)
+
+  def on_send_done(self, stream_id):
+    self._base_server.send_reset_stream()
+    self._base_server._stream_status[stream_id] = False
diff --git a/third_party/Cronet/bidirectional_stream_c.h b/third_party/Cronet/bidirectional_stream_c.h
new file mode 100644
index 0000000000000000000000000000000000000000..ffb235ae87461b7f2bfda7bd112a545c788cef07
--- /dev/null
+++ b/third_party/Cronet/bidirectional_stream_c.h
@@ -0,0 +1,246 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_GRPC_SUPPORT_INCLUDE_BIDIRECTIONAL_STREAM_C_H_
+#define COMPONENTS_GRPC_SUPPORT_INCLUDE_BIDIRECTIONAL_STREAM_C_H_
+
+#if defined(WIN32)
+#define GRPC_SUPPORT_EXPORT
+#else
+#define GRPC_SUPPORT_EXPORT __attribute__((visibility("default")))
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+
+/* Engine API. */
+
+/* Opaque object representing a Bidirectional stream creating engine. Created
+ * and configured outside of this API to facilitate sharing with other
+ * components */
+typedef struct stream_engine {
+  void* obj;
+  void* annotation;
+} stream_engine;
+
+/* Bidirectional Stream API */
+
+/* Opaque object representing Bidirectional Stream. */
+typedef struct bidirectional_stream {
+  void* obj;
+  void* annotation;
+} bidirectional_stream;
+
+/* A single request or response header element. */
+typedef struct bidirectional_stream_header {
+  const char* key;
+  const char* value;
+} bidirectional_stream_header;
+
+/* Array of request or response headers or trailers. */
+typedef struct bidirectional_stream_header_array {
+  size_t count;
+  size_t capacity;
+  bidirectional_stream_header* headers;
+} bidirectional_stream_header_array;
+
+/* Set of callbacks used to receive callbacks from bidirectional stream. */
+typedef struct bidirectional_stream_callback {
+  /* Invoked when the stream is ready for reading and writing.
+   * Consumer may call bidirectional_stream_read() to start reading data.
+   * Consumer may call bidirectional_stream_write() to start writing
+   * data.
+   */
+  void (*on_stream_ready)(bidirectional_stream* stream);
+
+  /* Invoked when initial response headers are received.
+   * Consumer must call bidirectional_stream_read() to start reading.
+   * Consumer may call bidirectional_stream_write() to start writing or
+   * close the stream. Contents of |headers| is valid for duration of the call.
+   */
+  void (*on_response_headers_received)(
+      bidirectional_stream* stream,
+      const bidirectional_stream_header_array* headers,
+      const char* negotiated_protocol);
+
+  /* Invoked when data is read into the buffer passed to
+   * bidirectional_stream_read(). Only part of the buffer may be
+   * populated. To continue reading, call bidirectional_stream_read().
+   * It may be invoked after on_response_trailers_received()}, if there was
+   * pending read data before trailers were received.
+   *
+   * If |bytes_read| is 0, it means the remote side has signaled that it will
+   * send no more data; future calls to bidirectional_stream_read()
+   * will result in the on_data_read() callback or on_succeded() callback if
+   * bidirectional_stream_write() was invoked with end_of_stream set to
+   * true.
+   */
+  void (*on_read_completed)(bidirectional_stream* stream,
+                            char* data,
+                            int bytes_read);
+
+  /**
+   * Invoked when all data passed to bidirectional_stream_write() is
+   * sent. To continue writing, call bidirectional_stream_write().
+   */
+  void (*on_write_completed)(bidirectional_stream* stream, const char* data);
+
+  /* Invoked when trailers are received before closing the stream. Only invoked
+   * when server sends trailers, which it may not. May be invoked while there is
+   * read data remaining in local buffer. Contents of |trailers| is valid for
+   * duration of the call.
+   */
+  void (*on_response_trailers_received)(
+      bidirectional_stream* stream,
+      const bidirectional_stream_header_array* trailers);
+
+  /**
+   * Invoked when there is no data to be read or written and the stream is
+   * closed successfully remotely and locally. Once invoked, no further callback
+   * methods will be invoked.
+   */
+  void (*on_succeded)(bidirectional_stream* stream);
+
+  /**
+   * Invoked if the stream failed for any reason after
+   * bidirectional_stream_start(). HTTP/2 error codes are
+   * mapped to chrome net error codes. Once invoked, no further callback methods
+   * will be invoked.
+   */
+  void (*on_failed)(bidirectional_stream* stream, int net_error);
+
+  /**
+   * Invoked if the stream was canceled via
+   * bidirectional_stream_cancel(). Once invoked, no further callback
+   * methods will be invoked.
+   */
+  void (*on_canceled)(bidirectional_stream* stream);
+} bidirectional_stream_callback;
+
+/* Creates a new stream object that uses |engine| and |callback|. All stream
+ * tasks are performed asynchronously on the |engine| network thread. |callback|
+ * methods are invoked synchronously on the |engine| network thread, but must
+ * not run tasks on the current thread to prevent blocking networking operations
+ * and causing exceptions during shutdown. The |annotation| is stored in
+ * bidirectional stream for arbitrary use by application.
+ *
+ * Returned |bidirectional_stream*| is owned by the caller, and must be
+ * destroyed using |bidirectional_stream_destroy|.
+ *
+ * Both |calback| and |engine| must remain valid until stream is destroyed.
+ */
+GRPC_SUPPORT_EXPORT
+bidirectional_stream* bidirectional_stream_create(
+    stream_engine* engine,
+    void* annotation,
+    bidirectional_stream_callback* callback);
+
+/* TBD: The following methods return int. Should it be a custom type? */
+
+/* Destroys stream object. Destroy could be called from any thread, including
+ * network thread, but is posted, so |stream| is valid until calling task is
+ * complete.
+ */
+GRPC_SUPPORT_EXPORT
+int bidirectional_stream_destroy(bidirectional_stream* stream);
+
+/**
+ * Disables or enables auto flush. By default, data is flushed after
+ * every bidirectional_stream_write(). If the auto flush is disabled,
+ * the client should explicitly call bidirectional_stream_flush to flush
+ * the data.
+ */
+GRPC_SUPPORT_EXPORT void bidirectional_stream_disable_auto_flush(
+    bidirectional_stream* stream,
+    bool disable_auto_flush);
+
+/**
+ * Delays sending request headers until bidirectional_stream_flush()
+ * is called. This flag is currently only respected when QUIC is negotiated.
+ * When true, QUIC will send request header frame along with data frame(s)
+ * as a single packet when possible.
+ */
+GRPC_SUPPORT_EXPORT
+void bidirectional_stream_delay_request_headers_until_flush(
+    bidirectional_stream* stream,
+    bool delay_headers_until_flush);
+
+/* Starts the stream by sending request to |url| using |method| and |headers|.
+ * If |end_of_stream| is true, then no data is expected to be written. The
+ * |method| is HTTP verb, with PUT having a special meaning to mark idempotent
+ * request, which could use QUIC 0-RTT.
+ */
+GRPC_SUPPORT_EXPORT
+int bidirectional_stream_start(bidirectional_stream* stream,
+                               const char* url,
+                               int priority,
+                               const char* method,
+                               const bidirectional_stream_header_array* headers,
+                               bool end_of_stream);
+
+/* Reads response data into |buffer| of |capacity| length. Must only be called
+ * at most once in response to each invocation of the
+ * on_stream_ready()/on_response_headers_received() and on_read_completed()
+ * methods of the bidirectional_stream_callback.
+ * Each call will result in an invocation of the callback's
+ * on_read_completed() method if data is read, or its on_failed() method if
+ * there's an error. The callback's on_succeeded() method is also invoked if
+ * there is no more data to read and |end_of_stream| was previously sent.
+ */
+GRPC_SUPPORT_EXPORT
+int bidirectional_stream_read(bidirectional_stream* stream,
+                              char* buffer,
+                              int capacity);
+
+/* Writes request data from |buffer| of |buffer_length| length. If auto flush is
+ * disabled, data will be sent only after bidirectional_stream_flush() is
+ * called.
+ * Each call will result in an invocation the callback's on_write_completed()
+ * method if data is sent, or its on_failed() method if there's an error.
+ * The callback's on_succeeded() method is also invoked if |end_of_stream| is
+ * set and all response data has been read.
+ */
+GRPC_SUPPORT_EXPORT
+int bidirectional_stream_write(bidirectional_stream* stream,
+                               const char* buffer,
+                               int buffer_length,
+                               bool end_of_stream);
+
+/**
+ * Flushes pending writes. This method should not be called before invocation of
+ * on_stream_ready() method of the bidirectional_stream_callback.
+ * For each previously called bidirectional_stream_write()
+ * a corresponding on_write_completed() callback will be invoked when the buffer
+ * is sent.
+ */
+GRPC_SUPPORT_EXPORT
+void bidirectional_stream_flush(bidirectional_stream* stream);
+
+/* Cancels the stream. Can be called at any time after
+ * bidirectional_stream_start(). The on_canceled() method of
+ * bidirectional_stream_callback will be invoked when cancelation
+ * is complete and no further callback methods will be invoked. If the
+ * stream has completed or has not started, calling
+ * bidirectional_stream_cancel() has no effect and on_canceled() will not
+ * be invoked. At most one callback method may be invoked after
+ * bidirectional_stream_cancel() has completed.
+ */
+GRPC_SUPPORT_EXPORT
+void bidirectional_stream_cancel(bidirectional_stream* stream);
+
+/* Returns true if the |stream| was successfully started and is now done
+ * (succeeded, canceled, or failed).
+ * Returns false if the |stream| stream is not yet started or is in progress.
+ */
+GRPC_SUPPORT_EXPORT
+bool bidirectional_stream_is_done(bidirectional_stream* stream);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // COMPONENTS_GRPC_SUPPORT_INCLUDE_BIDIRECTIONAL_STREAM_H_
diff --git a/third_party/boringssl-with-bazel b/third_party/boringssl-with-bazel
new file mode 160000
index 0000000000000000000000000000000000000000..886e7d75368e3f4fab3f4d0d3584e4abfc557755
--- /dev/null
+++ b/third_party/boringssl-with-bazel
@@ -0,0 +1 @@
+Subproject commit 886e7d75368e3f4fab3f4d0d3584e4abfc557755
diff --git a/third_party/gflags b/third_party/gflags
index 05b155ff59114735ec8cd089f669c4c3d8f59029..f8a0efe03aa69b3336d8e228b37d4ccb17324b88 160000
--- a/third_party/gflags
+++ b/third_party/gflags
@@ -1 +1 @@
-Subproject commit 05b155ff59114735ec8cd089f669c4c3d8f59029
+Subproject commit f8a0efe03aa69b3336d8e228b37d4ccb17324b88
diff --git a/third_party/objective_c/Cronet/cronet_c_for_grpc.h b/third_party/objective_c/Cronet/cronet_c_for_grpc.h
deleted file mode 100644
index 15a511aebd0b3d751b4f13127d8c51b289a89b95..0000000000000000000000000000000000000000
--- a/third_party/objective_c/Cronet/cronet_c_for_grpc.h
+++ /dev/null
@@ -1,202 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef COMPONENTS_CRONET_IOS_CRONET_C_FOR_GRPC_H_
-#define COMPONENTS_CRONET_IOS_CRONET_C_FOR_GRPC_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stddef.h>
-
-/* Cronet Engine API. */
-
-/* Opaque object representing Cronet Engine. Created and configured outside
- * of this API to facilitate sharing with other components */
-typedef struct cronet_engine { void* obj; } cronet_engine;
-
-void cronet_engine_add_quic_hint(cronet_engine* engine,
-                                 const char* host,
-                                 int port,
-                                 int alternate_port);
-
-/* Cronet Bidirectional Stream API */
-
-/* Opaque object representing Cronet Bidirectional Stream. */
-typedef struct cronet_bidirectional_stream {
-  void* obj;
-  void* annotation;
-} cronet_bidirectional_stream;
-
-/* A single request or response header element. */
-typedef struct cronet_bidirectional_stream_header {
-  const char* key;
-  const char* value;
-} cronet_bidirectional_stream_header;
-
-/* Array of request or response headers or trailers. */
-typedef struct cronet_bidirectional_stream_header_array {
-  size_t count;
-  size_t capacity;
-  cronet_bidirectional_stream_header* headers;
-} cronet_bidirectional_stream_header_array;
-
-/* Set of callbacks used to receive callbacks from bidirectional stream. */
-typedef struct cronet_bidirectional_stream_callback {
-  /* Invoked when request headers are sent. Indicates that stream has initiated
-   * the request. Consumer may call cronet_bidirectional_stream_write() to start
-   * writing data.
-   */
-  void (*on_request_headers_sent)(cronet_bidirectional_stream* stream);
-
-  /* Invoked when initial response headers are received.
-   * Consumer must call cronet_bidirectional_stream_read() to start reading.
-   * Consumer may call cronet_bidirectional_stream_write() to start writing or
-   * close the stream. Contents of |headers| is valid for duration of the call.
-   */
-  void (*on_response_headers_received)(
-      cronet_bidirectional_stream* stream,
-      const cronet_bidirectional_stream_header_array* headers,
-      const char* negotiated_protocol);
-
-  /* Invoked when data is read into the buffer passed to
-   * cronet_bidirectional_stream_read(). Only part of the buffer may be
-   * populated. To continue reading, call cronet_bidirectional_stream_read().
-   * It may be invoked after on_response_trailers_received()}, if there was
-   * pending read data before trailers were received.
-   *
-   * If count is 0, it means the remote side has signaled that it will send no
-   * more data; future calls to cronet_bidirectional_stream_read() will result
-   * in the on_data_read() callback or on_succeded() callback if
-   * cronet_bidirectional_stream_write() was invoked with end_of_stream set to
-   * true.
-   */
-  void (*on_read_completed)(cronet_bidirectional_stream* stream,
-                            char* data,
-                            int count);
-
-  /**
-   * Invoked when all data passed to cronet_bidirectional_stream_write() is
-   * sent.
-   * To continue writing, call cronet_bidirectional_stream_write().
-   */
-  void (*on_write_completed)(cronet_bidirectional_stream* stream,
-                             const char* data);
-
-  /* Invoked when trailers are received before closing the stream. Only invoked
-   * when server sends trailers, which it may not. May be invoked while there is
-   * read data remaining in local buffer. Contents of |trailers| is valid for
-   * duration of the call.
-   */
-  void (*on_response_trailers_received)(
-      cronet_bidirectional_stream* stream,
-      const cronet_bidirectional_stream_header_array* trailers);
-
-  /**
-   * Invoked when there is no data to be read or written and the stream is
-   * closed successfully remotely and locally. Once invoked, no further callback
-   * methods will be invoked.
-   */
-  void (*on_succeded)(cronet_bidirectional_stream* stream);
-
-  /**
-   * Invoked if the stream failed for any reason after
-   * cronet_bidirectional_stream_start(). HTTP/2 error codes are
-   * mapped to chrome net error codes. Once invoked, no further callback methods
-   * will be invoked.
-   */
-  void (*on_failed)(cronet_bidirectional_stream* stream, int net_error);
-
-  /**
-   * Invoked if the stream was canceled via
-   * cronet_bidirectional_stream_cancel(). Once invoked, no further callback
-   * methods will be invoked.
-   */
-  void (*on_canceled)(cronet_bidirectional_stream* stream);
-} cronet_bidirectional_stream_callback;
-
-/* Create a new stream object that uses |engine| and |callback|. All stream
- * tasks are performed asynchronously on the |engine| network thread. |callback|
- * methods are invoked synchronously on the |engine| network thread, but must
- * not run tasks on the current thread to prevent blocking networking operations
- * and causing exceptions during shutdown. The |annotation| is stored in
- * bidirectional stream for arbitrary use by application.
- *
- * Returned |cronet_bidirectional_stream*| is owned by the caller, and must be
- * destroyed using |cronet_bidirectional_stream_destroy|.
- *
- * Both |calback| and |engine| must remain valid until stream is destroyed.
- */
-cronet_bidirectional_stream* cronet_bidirectional_stream_create(
-    cronet_engine* engine,
-    void* annotation,
-    cronet_bidirectional_stream_callback* callback);
-
-/* TBD: The following methods return int. Should it be a custom type? */
-
-/* Destroy stream object. Destroy could be called from any thread, including
- * network thread, but is posted, so |stream| is valid until calling task is
- * complete.
- */
-int cronet_bidirectional_stream_destroy(cronet_bidirectional_stream* stream);
-
-/* Start the stream by sending request to |url| using |method| and |headers|. If
- * |end_of_stream| is true, then no data is expected to be written.
- */
-int cronet_bidirectional_stream_start(
-    cronet_bidirectional_stream* stream,
-    const char* url,
-    int priority,
-    const char* method,
-    const cronet_bidirectional_stream_header_array* headers,
-    bool end_of_stream);
-
-/* Read response data into |buffer| of |capacity| length. Must only be called at
- * most once in response to each invocation of the
- * on_response_headers_received() and on_read_completed() methods of the
- * cronet_bidirectional_stream_callback.
- * Each call will result in an invocation of one of the callback's
- * on_read_completed  method if data is read, its on_succeeded() method if
- * the stream is closed, or its on_failed() method if there's an error.
- */
-int cronet_bidirectional_stream_read(cronet_bidirectional_stream* stream,
-                                     char* buffer,
-                                     int capacity);
-
-/* Read response data into |buffer| of |capacity| length. Must only be called at
- * most once in response to each invocation of the
- * on_response_headers_received() and on_read_completed() methods of the
- * cronet_bidirectional_stream_callback.
- * Each call will result in an invocation of one of the callback's
- * on_read_completed  method if data is read, its on_succeeded() method if
- * the stream is closed, or its on_failed() method if there's an error.
- */
-int cronet_bidirectional_stream_write(cronet_bidirectional_stream* stream,
-                                      const char* buffer,
-                                      int count,
-                                      bool end_of_stream);
-
-/* Cancels the stream. Can be called at any time after
- * cronet_bidirectional_stream_start(). The on_canceled() method of
- * cronet_bidirectional_stream_callback will be invoked when cancelation
- * is complete and no further callback methods will be invoked. If the
- * stream has completed or has not started, calling
- * cronet_bidirectional_stream_cancel() has no effect and on_canceled() will not
- * be  invoked. At most one callback method may be invoked after
- * cronet_bidirectional_stream_cancel() has completed.
- */
-int cronet_bidirectional_stream_cancel(cronet_bidirectional_stream* stream);
-
-/* Returns true if the |stream| was successfully started and is now done
- * (succeeded, canceled, or failed).
- * Returns false if the |stream| stream is not yet started or is in progress.
- */
-bool cronet_bidirectional_stream_is_done(cronet_bidirectional_stream* stream);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  // COMPONENTS_CRONET_IOS_CRONET_C_FOR_GRPC_H_
diff --git a/third_party/zlib.BUILD b/third_party/zlib.BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..7879a81c680874974e52fe023954744abfcd3277
--- /dev/null
+++ b/third_party/zlib.BUILD
@@ -0,0 +1,36 @@
+cc_library(
+    name = "z",
+    srcs = [
+        "adler32.c",
+        "compress.c",
+        "crc32.c",
+        "deflate.c",
+        "infback.c",
+        "inffast.c",
+        "inflate.c",
+        "inftrees.c",
+        "trees.c",
+        "uncompr.c",
+        "zutil.c",
+    ],
+    hdrs = [
+        "crc32.h",
+        "deflate.h",
+        "gzguts.h",
+        "inffast.h",
+        "inffixed.h",
+        "inflate.h",
+        "inftrees.h",
+        "trees.h",
+        "zconf.h",
+        "zlib.h",
+        "zutil.h",
+    ],
+    includes = [
+        "include",
+    ],
+    linkstatic = 1,
+    visibility = [
+        "//visibility:public",
+    ],
+)
diff --git a/tools/buildgen/generate_build_additions.sh b/tools/buildgen/generate_build_additions.sh
index 53c30c7609d71c964af4248ef9f0f9506674fd22..a4373ed350319f4e221bb0eac7fc7ea376b2f843 100644
--- a/tools/buildgen/generate_build_additions.sh
+++ b/tools/buildgen/generate_build_additions.sh
@@ -28,6 +28,8 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+set -e
+
 gen_build_yaml_dirs="  \
   src/boringssl        \
   src/benchmark \
diff --git a/tools/buildgen/generate_projects.py b/tools/buildgen/generate_projects.py
index 5e78ad52d6bfdb3bb77d12cb60d085d410601dd8..f8ddaf4963c8234ef1a88d085f439d7ee522d59c 100755
--- a/tools/buildgen/generate_projects.py
+++ b/tools/buildgen/generate_projects.py
@@ -36,7 +36,7 @@ import shutil
 import sys
 import tempfile
 import multiprocessing
-sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), '..', 'run_tests'))
+sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), '..', 'run_tests', 'python_utils'))
 
 assert sys.argv[1:], 'run generate_projects.sh instead of this directly'
 
diff --git a/tools/codegen/core/gen_nano_proto.sh b/tools/codegen/core/gen_nano_proto.sh
index df107c208f670f90dd4a369236a6cf0427c130c6..99e49814b833f6d043d1f7bcc109f2e38b38d35d 100755
--- a/tools/codegen/core/gen_nano_proto.sh
+++ b/tools/codegen/core/gen_nano_proto.sh
@@ -42,46 +42,6 @@
 # 4: Output dir not an absolute path.
 # 5: Couldn't create output directory (2nd argument).
 
-read -r -d '' COPYRIGHT <<'EOF'
-/*
- *
- * Copyright <YEAR>, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-EOF
-
-CURRENT_YEAR=$(date +%Y)
-COPYRIGHT_FILE=$(mktemp)
-echo "${COPYRIGHT/<YEAR>/$CURRENT_YEAR}" > $COPYRIGHT_FILE
-
 set -ex
 if [ $# -lt 2 ] || [ $# -gt 3 ]; then
   echo "Usage: $0 <input.proto> <absolute path to output dir> [grpc path]"
@@ -143,13 +103,6 @@ readonly UC_PROTO_BASENAME=`echo $PROTO_BASENAME | tr [a-z] [A-Z]`
 sed -i "s:PB_${UC_PROTO_BASENAME}_PB_H_INCLUDED:GRPC_${INCLUDE_GUARD_BASE}_${UC_PROTO_BASENAME}_PB_H:g" \
   "$OUTPUT_DIR/$PROTO_BASENAME.pb.h"
 
-# prepend copyright
-TMPFILE=$(mktemp)
-cat $COPYRIGHT_FILE "$OUTPUT_DIR/$PROTO_BASENAME.pb.c" > $TMPFILE
-mv -v $TMPFILE "$OUTPUT_DIR/$PROTO_BASENAME.pb.c"
-cat $COPYRIGHT_FILE "$OUTPUT_DIR/$PROTO_BASENAME.pb.h" > $TMPFILE
-mv -v $TMPFILE "$OUTPUT_DIR/$PROTO_BASENAME.pb.h"
-
 deactivate
 rm -rf $VENV_DIR
 
diff --git a/tools/distrib/check_copyright.py b/tools/distrib/check_copyright.py
index f06e5f1d1a15c0747b9b19fe1df4903d0a3b1aaf..c993407eb24a41e6c7b94ca8d32c26a7cb262119 100755
--- a/tools/distrib/check_copyright.py
+++ b/tools/distrib/check_copyright.py
@@ -90,11 +90,26 @@ LICENSE_PREFIX = {
   'Makefile':   r'#\s*',
   'Dockerfile': r'#\s*',
   'LICENSE':    '',
+  'BUILD':      r'#\s*',
 }
 
-KNOWN_BAD = set([
+_EXEMPT = frozenset((
+  # Generated protocol compiler output.
+  'examples/python/helloworld/helloworld_pb2.py',
+  'examples/python/helloworld/helloworld_pb2_grpc.py',
+  'examples/python/multiplex/helloworld_pb2.py',
+  'examples/python/multiplex/helloworld_pb2_grpc.py',
+  'examples/python/multiplex/route_guide_pb2.py',
+  'examples/python/multiplex/route_guide_pb2_grpc.py',
+  'examples/python/route_guide/route_guide_pb2.py',
+  'examples/python/route_guide/route_guide_pb2_grpc.py',
+
+  'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h',
+  'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c',
+
+  # An older file originally from outside gRPC.
   'src/php/tests/bootstrap.php',
-])
+))
 
 
 RE_YEAR = r'Copyright (?P<first_year>[0-9]+\-)?(?P<last_year>[0-9]+), Google Inc\.'
@@ -140,7 +155,8 @@ except subprocess.CalledProcessError:
   sys.exit(0)
 
 for filename in filename_list:
-  if filename in KNOWN_BAD: continue
+  if filename in _EXEMPT:
+    continue
   ext = os.path.splitext(filename)[1]
   base = os.path.basename(filename)
   if ext in RE_LICENSE:
diff --git a/tools/distrib/check_nanopb_output.sh b/tools/distrib/check_nanopb_output.sh
index c0707051a60a81ffd08b15eb5919fa1c127e9efe..eb64e23daf760dc5b93603d6208a3e3bc86d162a 100755
--- a/tools/distrib/check_nanopb_output.sh
+++ b/tools/distrib/check_nanopb_output.sh
@@ -37,7 +37,7 @@ readonly PROTOBUF_INSTALL_PREFIX="$(mktemp -d)"
 pushd third_party/protobuf
 ./autogen.sh
 ./configure --prefix="$PROTOBUF_INSTALL_PREFIX"
-make
+make -j 8
 make install
 #ldconfig
 popd
@@ -51,7 +51,7 @@ fi
 # stack up and change to nanopb's proto generator directory
 pushd third_party/nanopb/generator/proto
 export PATH="$PROTOC_BIN_PATH:$PATH"
-make
+make -j 8
 # back to the root directory
 popd
 
diff --git a/tools/distrib/clang_format_code.sh b/tools/distrib/clang_format_code.sh
index 858e07489816a7f59f273e058c9d7310db2df319..13e018709fe93a06f2f86fbc83ef40e9a8931aee 100755
--- a/tools/distrib/clang_format_code.sh
+++ b/tools/distrib/clang_format_code.sh
@@ -32,9 +32,15 @@ set -ex
 
 # change to root directory
 cd $(dirname $0)/../..
+REPO_ROOT=$(pwd)
 
-# build clang-format docker image
-docker build -t grpc_clang_format tools/dockerfile/grpc_clang_format
+if [ "$CLANG_FORMAT_SKIP_DOCKER" == "" ]
+then
+  # build clang-format docker image
+  docker build -t grpc_clang_format tools/dockerfile/grpc_clang_format
 
-# run clang-format against the checked out codebase
-docker run -e TEST=$TEST -e CHANGED_FILES="$CHANGED_FILES" --rm=true -v ${HOST_GIT_ROOT:-`pwd`}:/local-code -t grpc_clang_format /clang_format_all_the_things.sh
+  # run clang-format against the checked out codebase
+  docker run -e TEST=$TEST -e CHANGED_FILES="$CHANGED_FILES" -e CLANG_FORMAT_ROOT="/local-code" --rm=true -v "${REPO_ROOT}":/local-code -t grpc_clang_format /clang_format_all_the_things.sh
+else
+  CLANG_FORMAT_ROOT="${REPO_ROOT}" tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
+fi
diff --git a/tools/run_tests/prepare_travis.sh b/tools/distrib/pyformat_code.sh
similarity index 62%
rename from tools/run_tests/prepare_travis.sh
rename to tools/distrib/pyformat_code.sh
index 10546535e8ea10387f5545a309a58424b027dd48..e3ebf1c4908238f16a7878c028b053b5542fe23f 100755
--- a/tools/run_tests/prepare_travis.sh
+++ b/tools/distrib/pyformat_code.sh
@@ -28,40 +28,33 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-cd `dirname $0`/../..
-grpc_dir=`pwd`
+set -ex
 
-distrib=`md5sum /etc/issue | cut -f1 -d\ `
-echo "Configuring for distribution $distrib"
-git submodule | while read sha path extra ; do
-  cd /tmp
-  name=`basename $path`
-  file=$name-$sha-$CONFIG-prebuilt-$distrib.tar.gz
-  echo -n "Looking for $file ..."
-  url=http://storage.googleapis.com/grpc-prebuilt-packages/$file
-  wget -q $url && (
-    echo " Found."
-    tar xfz $file
-  ) || echo " Not found."
-done
+# change to root directory
+cd $(dirname $0)/../..
+
+DIRS=src/python
+EXCLUSIONS='src/python/grpcio/grpc_*.py src/python/grpcio_health_checking/grpc_*.py src/python/grpcio_reflection/grpc_*.py src/python/grpcio_tests/grpc_*.py'
 
-mkdir -p bins/$CONFIG/protobuf
-mkdir -p libs/$CONFIG/protobuf
-mkdir -p libs/$CONFIG/openssl
+VIRTUALENV=python_format_venv
 
-function cpt {
-  cp /tmp/prebuilt/$1 $2/$CONFIG/$3
-  touch $2/$CONFIG/$3/`basename $1`
-}
+virtualenv $VIRTUALENV
+PYTHON=`realpath $VIRTUALENV/bin/python`
+$PYTHON -m pip install --upgrade futures yapf
 
-if [ -e /tmp/prebuilt/bin/protoc ] ; then
-  touch third_party/protobuf/configure
-  cpt bin/protoc bins protobuf
-  cpt lib/libprotoc.a libs protobuf
-  cpt lib/libprotobuf.a libs protobuf
-fi
+exclusion_args=""
+for exclusion in $EXCLUSIONS; do
+  exclusion_args="$exclusion_args --exclude $exclusion"
+done
 
-if [ -e /tmp/prebuilt/lib/libssl.a ] ; then
-  cpt lib/libcrypto.a libs openssl
-  cpt lib/libssl.a libs openssl
-fi
+script_result=0
+for dir in $DIRS; do
+  tempdir=`mktemp -d`
+  cp -RT $dir $tempdir
+  $PYTHON -m yapf -i -r -p $exclusion_args $dir
+  if ! diff -rq $dir $tempdir; then
+    script_result=1
+  fi
+  rm -rf $tempdir
+done
+exit $script_result
diff --git a/tools/distrib/python/docgen.py b/tools/distrib/python/docgen.py
index 622317920d4f9c7228df872e20ddc3056adae4a7..38ffcd6e0e3d52e56099a9895acb52e7f99c805d 100755
--- a/tools/distrib/python/docgen.py
+++ b/tools/distrib/python/docgen.py
@@ -94,6 +94,7 @@ if args.submit:
   # specified repository, edit it, and push it. It's up to the user to then go
   # onto GitHub and make a PR against grpc/grpc:gh-pages.
   repo_parent_dir = tempfile.mkdtemp()
+  print('Documentation parent directory: {}'.format(repo_parent_dir))
   repo_dir = os.path.join(repo_parent_dir, 'grpc')
   python_doc_dir = os.path.join(repo_dir, 'python')
   doc_branch = args.doc_branch
diff --git a/tools/distrib/python/grpcio_tools/MANIFEST.in b/tools/distrib/python/grpcio_tools/MANIFEST.in
index 7712834d642ad549cf2e1ff40dd13bb998e3e698..11ce367747aa1db4f98f7d285956f34f31e71df8 100644
--- a/tools/distrib/python/grpcio_tools/MANIFEST.in
+++ b/tools/distrib/python/grpcio_tools/MANIFEST.in
@@ -2,6 +2,6 @@ include grpc_version.py
 include protoc_deps.py
 include protoc_lib_deps.py
 include README.rst
-graft grpc
+graft grpc_tools
 graft grpc_root
 graft third_party
diff --git a/tools/distrib/python/grpcio_tools/grpc_tools/command.py b/tools/distrib/python/grpcio_tools/grpc_tools/command.py
index 43ec8c2a4c62abb1972306c8345c637c2fbcb81f..31b3331a66f917b67c9dc4bc40ef39baac3c4ce0 100644
--- a/tools/distrib/python/grpcio_tools/grpc_tools/command.py
+++ b/tools/distrib/python/grpcio_tools/grpc_tools/command.py
@@ -49,7 +49,7 @@ def build_package_protos(package_root):
 
   for proto_file in proto_files:
     command = [
-        'grpc.tools.protoc',
+        'grpc_tools.protoc',
         '--proto_path={}'.format(inclusion_root),
         '--proto_path={}'.format(well_known_protos_include),
         '--python_out={}'.format(inclusion_root),
diff --git a/tools/distrib/python/grpcio_tools/grpc_tools/protoc.py b/tools/distrib/python/grpcio_tools/grpc_tools/protoc.py
index 7d5892dc4b7c2f74d4640d2c3af581414e19180b..63fddb2f064640df544a9b9725585e4ac39c3681 100644
--- a/tools/distrib/python/grpcio_tools/grpc_tools/protoc.py
+++ b/tools/distrib/python/grpcio_tools/grpc_tools/protoc.py
@@ -45,5 +45,5 @@ def main(command_arguments):
   return _protoc_compiler.run_main(command_arguments)
 
 if __name__ == '__main__':
-  proto_include = pkg_resources.resource_filename('grpc.tools', '_proto')
+  proto_include = pkg_resources.resource_filename('grpc_tools', '_proto')
   sys.exit(main(sys.argv + ['-I{}'.format(proto_include)]))
diff --git a/tools/distrib/python/grpcio_tools/setup.py b/tools/distrib/python/grpcio_tools/setup.py
index 581ecc40c0a8c3abd7e499c474be05428fece1ff..502d7ef27b81d54d7e9568b6285bf98f4cee2baf 100644
--- a/tools/distrib/python/grpcio_tools/setup.py
+++ b/tools/distrib/python/grpcio_tools/setup.py
@@ -184,7 +184,7 @@ def extension_modules():
     return extensions
 
 setuptools.setup(
-  name='grpcio_tools',
+  name='grpcio-tools',
   version=grpc_version.VERSION,
   license='3-clause BSD',
   ext_modules=extension_modules(),
diff --git a/tools/dockerfile/grpc_artifact_protoc/Dockerfile b/tools/dockerfile/grpc_artifact_protoc/Dockerfile
index 1bbc6e021bc67a6d2419bef498485704f86bcda3..2904a8fa51ff710f66475ed9631dfc0628c300bb 100644
--- a/tools/dockerfile/grpc_artifact_protoc/Dockerfile
+++ b/tools/dockerfile/grpc_artifact_protoc/Dockerfile
@@ -59,5 +59,11 @@ RUN yum install -y devtoolset-1.1 \
                    devtoolset-1.1-libstdc++-devel \
                    devtoolset-1.1-libstdc++-devel.i686 || true
 
+# Update Git to version >1.7 to allow cloning submodules with --reference arg.
+RUN yum remove -y git
+RUN yum install -y epel-release
+RUN yum install -y https://centos6.iuscommunity.org/ius-release.rpm
+RUN yum install -y git2u
+
 # Start in devtoolset environment that uses GCC 4.7
 CMD ["scl", "enable", "devtoolset-1.1", "bash"]
diff --git a/tools/dockerfile/grpc_artifact_python_manylinux_x64/Dockerfile b/tools/dockerfile/grpc_artifact_python_manylinux_x64/Dockerfile
index 1d4e8e1a4a4b27da4b57250a229bc8f883caa266..69e624aa41a18244eed8d6c4ce85d1e174d5ad04 100644
--- a/tools/dockerfile/grpc_artifact_python_manylinux_x64/Dockerfile
+++ b/tools/dockerfile/grpc_artifact_python_manylinux_x64/Dockerfile
@@ -34,6 +34,19 @@ FROM quay.io/pypa/manylinux1_x86_64
 # Update the package manager
 RUN yum update -y
 
+#############################################################
+# Update Git to allow cloning submodules with --reference arg
+RUN yum remove -y git
+RUN yum install -y curl-devel expat-devel gettext-devel openssl-devel zlib-devel gcc
+RUN cd /usr/src && \
+  wget https://kernel.org/pub/software/scm/git/git-2.0.5.tar.gz && \
+  tar xzf git-2.0.5.tar.gz
+RUN cd /usr/src/git-2.0.5 && \
+  make prefix=/usr/local/git all && \
+  make prefix=/usr/local/git install
+ENV PATH /usr/local/git/bin:$PATH
+RUN source /etc/bashrc
+
 ###################################
 # Install Python build requirements
 RUN /opt/python/cp27-cp27m/bin/pip install cython
diff --git a/tools/dockerfile/grpc_artifact_python_manylinux_x86/Dockerfile b/tools/dockerfile/grpc_artifact_python_manylinux_x86/Dockerfile
index 810499695ec45a34a69336edba21e70cebecfb82..9af80078edd51b6d023d30aeca5e2e16047ebb12 100644
--- a/tools/dockerfile/grpc_artifact_python_manylinux_x86/Dockerfile
+++ b/tools/dockerfile/grpc_artifact_python_manylinux_x86/Dockerfile
@@ -34,6 +34,19 @@ FROM quay.io/pypa/manylinux1_i686
 # Update the package manager
 RUN yum update -y
 
+#############################################################
+# Update Git to allow cloning submodules with --reference arg
+RUN yum remove -y git
+RUN yum install -y curl-devel expat-devel gettext-devel openssl-devel zlib-devel gcc
+RUN cd /usr/src && \
+  wget https://kernel.org/pub/software/scm/git/git-2.0.5.tar.gz && \
+  tar xzf git-2.0.5.tar.gz
+RUN cd /usr/src/git-2.0.5 && \
+  make prefix=/usr/local/git all && \
+  make prefix=/usr/local/git install
+ENV PATH /usr/local/git/bin:$PATH
+RUN source /etc/bashrc
+
 ###################################
 # Install Python build requirements
 RUN /opt/python/cp27-cp27m/bin/pip install cython
diff --git a/tools/dockerfile/grpc_clang_format/Dockerfile b/tools/dockerfile/grpc_clang_format/Dockerfile
index ab58017a02af8937b6b1c393e16032c6250618b6..85f5e4db74a639388fb9458f986e45d9aea44ead 100644
--- a/tools/dockerfile/grpc_clang_format/Dockerfile
+++ b/tools/dockerfile/grpc_clang_format/Dockerfile
@@ -27,13 +27,13 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-FROM ubuntu:wily
-RUN apt-get update
-RUN apt-get -y install wget
+FROM ubuntu:15.10
+
+RUN apt-get update && apt-get -y install wget
 RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
 RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
 RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
-RUN apt-get update
-RUN apt-get -y install clang-format-3.8
+RUN apt-get update && apt-get -y install clang-format-3.8
+
 ADD clang_format_all_the_things.sh /
 CMD ["echo 'Run with tools/distrib/clang_format_code.sh'"]
diff --git a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
index 462c65ab5e9be20dcc582c7916b3391020b83cb7..c6e4aabfe63fcb88f4e961451699275f753c1bb5 100755
--- a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
+++ b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
@@ -44,7 +44,7 @@ for dir in $DIRS
 do
   for glob in $GLOB
   do
-    files="$files `find /local-code/$dir -name $glob -and -not -name *.generated.* -and -not -name *.pb.h -and -not -name *.pb.c -and -not -name *.pb.cc`"
+    files="$files `find ${CLANG_FORMAT_ROOT}/$dir -name $glob -and -not -name *.generated.* -and -not -name *.pb.h -and -not -name *.pb.c -and -not -name *.pb.cc`"
   done
 done
 
@@ -54,7 +54,7 @@ if [ -n "$CHANGED_FILES" ]; then
   files=$(comm -12 <(echo $files | tr ' ' '\n' | sort -u) <(echo $CHANGED_FILES | tr ' ' '\n' | sort -u))
 fi
 
-if [ "x$TEST" = "x" ]
+if [ "$TEST" == "" ]
 then
   echo $files | xargs $CLANG_FORMAT -i
 else
diff --git a/tools/dockerfile/test/bazel/Dockerfile b/tools/dockerfile/test/bazel/Dockerfile
new file mode 100644
index 0000000000000000000000000000000000000000..cc41384833796c76186f054d842cbea4f02a2d9a
--- /dev/null
+++ b/tools/dockerfile/test/bazel/Dockerfile
@@ -0,0 +1,78 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+FROM ubuntu:15.10
+
+# Install Git and basic packages.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  golang \
+  gyp \
+  lcov \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  perl \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+#================
+# Build profiling
+RUN apt-get update && apt-get install -y time && apt-get clean
+
+
+#========================
+# Bazel installation
+RUN apt-get install -y software-properties-common g++
+RUN echo "deb [arch=amd64] http://storage.googleapis.com/bazel-apt stable jdk1.8" > /etc/apt/sources.list.d/bazel.list
+RUN curl https://bazel.build/bazel-release.pub.gpg | apt-key add -
+RUN apt-get -y update
+RUN apt-get -y install bazel
+
+RUN mkdir -p /var/local/jenkins
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/dockerfile/test/node_jessie_x64/Dockerfile b/tools/dockerfile/test/node_jessie_x64/Dockerfile
index d9a75018295323351de516df0149f8f838e50013..7f93933ecacf7562847dab5688c97e98b27d6ff3 100644
--- a/tools/dockerfile/test/node_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/node_jessie_x64/Dockerfile
@@ -63,6 +63,17 @@ RUN apt-get update && apt-get install -y \
 # Build profiling
 RUN apt-get update && apt-get install -y time && apt-get clean
 
+
+# Install Electron apt dependencies
+RUN apt-get update && apt-get install -y \
+  libasound2 \
+  libgconf-2-4 \
+  libgtk2.0-0 \
+  libnss3 \
+  libxss1 \
+  libxtst6 \
+  xvfb
+
 #====================
 # Python dependencies
 
diff --git a/tools/dockerfile/test/sanity/Dockerfile b/tools/dockerfile/test/sanity/Dockerfile
index 6b19ac845b4813598ab6ef889468c79cb06d6496..811384fda14f996fae5606e83af4cf852e6064d2 100644
--- a/tools/dockerfile/test/sanity/Dockerfile
+++ b/tools/dockerfile/test/sanity/Dockerfile
@@ -97,17 +97,27 @@ RUN apt-get install -y openjdk-8-jdk
 # ./compile.sh without a local protoc dependency
 # TODO(mattkwong): install dependencies to support latest Bazel version if newer
 # version is needed
-RUN git clone https://github.com/bazelbuild/bazel.git /bazel &&   cd /bazel && git checkout tags/0.4.1 && ./compile.sh
+RUN git clone https://github.com/bazelbuild/bazel.git /bazel && \
+  cd /bazel && git checkout tags/0.4.1 && ./compile.sh
 RUN ln -s /bazel/output/bazel /bin/
 
-#===================
-# Docker "inception"
-# Note this is quite the ugly hack.
-# This makes sure that the docker binary we inject has its dependencies.
-RUN curl https://get.docker.com/ | sh
-RUN apt-get remove --purge -y docker-engine
+RUN apt-get update && apt-get -y install wget
+RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
+RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
+RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
+RUN apt-get update && apt-get -y install clang-format-3.8
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
 
 RUN mkdir /var/local/jenkins
 
+
 # Define the default command.
 CMD ["bash"]
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index ff3a0e381daafd113f1b600a5d8256d3320f9a98..af844d661bec4f93475fe2ff8327f54cc02e7a3f 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -760,7 +760,36 @@ WARN_LOGFILE           =
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = include/grpc++/alarm.h \
+INPUT                  = doc/PROTOCOL-HTTP2.md \
+doc/PROTOCOL-WEB.md \
+doc/binary-logging.md \
+doc/c-style-guide.md \
+doc/command_line_tool.md \
+doc/compression.md \
+doc/compression_cookbook.md \
+doc/connection-backoff-interop-test-description.md \
+doc/connection-backoff.md \
+doc/connectivity-semantics-and-api.md \
+doc/cpp-style-guide.md \
+doc/cpp/pending_api_cleanups.md \
+doc/cpp/perf_notes.md \
+doc/environment_variables.md \
+doc/epoll-polling-engine.md \
+doc/fail_fast.md \
+doc/g_stands_for.md \
+doc/health-checking.md \
+doc/http-grpc-status-mapping.md \
+doc/interop-test-descriptions.md \
+doc/load-balancing.md \
+doc/naming.md \
+doc/negative-http2-interop-test-descriptions.md \
+doc/server-reflection.md \
+doc/server_reflection_tutorial.md \
+doc/service_config.md \
+doc/statuscodes.md \
+doc/stress_test_framework.md \
+doc/wait-for-ready.md \
+include/grpc++/alarm.h \
 include/grpc++/channel.h \
 include/grpc++/client_context.h \
 include/grpc++/completion_queue.h \
@@ -771,7 +800,35 @@ include/grpc++/generic/generic_stub.h \
 include/grpc++/grpc++.h \
 include/grpc++/impl/call.h \
 include/grpc++/impl/client_unary_call.h \
+include/grpc++/impl/codegen/async_stream.h \
+include/grpc++/impl/codegen/async_unary_call.h \
+include/grpc++/impl/codegen/call.h \
+include/grpc++/impl/codegen/call_hook.h \
+include/grpc++/impl/codegen/channel_interface.h \
+include/grpc++/impl/codegen/client_context.h \
+include/grpc++/impl/codegen/client_unary_call.h \
+include/grpc++/impl/codegen/completion_queue.h \
+include/grpc++/impl/codegen/completion_queue_tag.h \
+include/grpc++/impl/codegen/config.h \
 include/grpc++/impl/codegen/core_codegen.h \
+include/grpc++/impl/codegen/core_codegen_interface.h \
+include/grpc++/impl/codegen/create_auth_context.h \
+include/grpc++/impl/codegen/grpc_library.h \
+include/grpc++/impl/codegen/method_handler_impl.h \
+include/grpc++/impl/codegen/rpc_method.h \
+include/grpc++/impl/codegen/rpc_service_method.h \
+include/grpc++/impl/codegen/security/auth_context.h \
+include/grpc++/impl/codegen/serialization_traits.h \
+include/grpc++/impl/codegen/server_context.h \
+include/grpc++/impl/codegen/server_interface.h \
+include/grpc++/impl/codegen/service_type.h \
+include/grpc++/impl/codegen/status.h \
+include/grpc++/impl/codegen/status_code_enum.h \
+include/grpc++/impl/codegen/status_helper.h \
+include/grpc++/impl/codegen/string_ref.h \
+include/grpc++/impl/codegen/stub_options.h \
+include/grpc++/impl/codegen/sync_stream.h \
+include/grpc++/impl/codegen/time.h \
 include/grpc++/impl/grpc_library.h \
 include/grpc++/impl/method_handler_impl.h \
 include/grpc++/impl/rpc_method.h \
@@ -802,47 +859,21 @@ include/grpc++/support/string_ref.h \
 include/grpc++/support/stub_options.h \
 include/grpc++/support/sync_stream.h \
 include/grpc++/support/time.h \
-include/grpc++/impl/codegen/async_stream.h \
-include/grpc++/impl/codegen/async_unary_call.h \
-include/grpc++/impl/codegen/call.h \
-include/grpc++/impl/codegen/call_hook.h \
-include/grpc++/impl/codegen/channel_interface.h \
-include/grpc++/impl/codegen/client_context.h \
-include/grpc++/impl/codegen/client_unary_call.h \
-include/grpc++/impl/codegen/completion_queue.h \
-include/grpc++/impl/codegen/completion_queue_tag.h \
-include/grpc++/impl/codegen/config.h \
-include/grpc++/impl/codegen/core_codegen_interface.h \
-include/grpc++/impl/codegen/create_auth_context.h \
-include/grpc++/impl/codegen/grpc_library.h \
-include/grpc++/impl/codegen/method_handler_impl.h \
-include/grpc++/impl/codegen/rpc_method.h \
-include/grpc++/impl/codegen/rpc_service_method.h \
-include/grpc++/impl/codegen/security/auth_context.h \
-include/grpc++/impl/codegen/serialization_traits.h \
-include/grpc++/impl/codegen/server_context.h \
-include/grpc++/impl/codegen/server_interface.h \
-include/grpc++/impl/codegen/service_type.h \
-include/grpc++/impl/codegen/status.h \
-include/grpc++/impl/codegen/status_code_enum.h \
-include/grpc++/impl/codegen/status_helper.h \
-include/grpc++/impl/codegen/string_ref.h \
-include/grpc++/impl/codegen/stub_options.h \
-include/grpc++/impl/codegen/sync_stream.h \
-include/grpc++/impl/codegen/time.h \
-include/grpc/impl/codegen/byte_buffer_reader.h \
-include/grpc/impl/codegen/compression_types.h \
-include/grpc/impl/codegen/connectivity_state.h \
-include/grpc/impl/codegen/grpc_types.h \
-include/grpc/impl/codegen/propagation_bits.h \
-include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/atm.h \
 include/grpc/impl/codegen/atm_gcc_atomic.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/byte_buffer_reader.h \
+include/grpc/impl/codegen/compression_types.h \
+include/grpc/impl/codegen/connectivity_state.h \
+include/grpc/impl/codegen/exec_ctx_fwd.h \
+include/grpc/impl/codegen/gpr_slice.h \
 include/grpc/impl/codegen/gpr_types.h \
+include/grpc/impl/codegen/grpc_types.h \
 include/grpc/impl/codegen/port_platform.h \
+include/grpc/impl/codegen/propagation_bits.h \
 include/grpc/impl/codegen/slice.h \
+include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_posix.h \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 04e8f4e7f20d36abacfc6c0ebf016ca604207530..2b2d8a3fe1f6f4a773a243fe1b6a8e7c1e3513e8 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -760,7 +760,36 @@ WARN_LOGFILE           =
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = include/grpc++/alarm.h \
+INPUT                  = doc/PROTOCOL-HTTP2.md \
+doc/PROTOCOL-WEB.md \
+doc/binary-logging.md \
+doc/c-style-guide.md \
+doc/command_line_tool.md \
+doc/compression.md \
+doc/compression_cookbook.md \
+doc/connection-backoff-interop-test-description.md \
+doc/connection-backoff.md \
+doc/connectivity-semantics-and-api.md \
+doc/cpp-style-guide.md \
+doc/cpp/pending_api_cleanups.md \
+doc/cpp/perf_notes.md \
+doc/environment_variables.md \
+doc/epoll-polling-engine.md \
+doc/fail_fast.md \
+doc/g_stands_for.md \
+doc/health-checking.md \
+doc/http-grpc-status-mapping.md \
+doc/interop-test-descriptions.md \
+doc/load-balancing.md \
+doc/naming.md \
+doc/negative-http2-interop-test-descriptions.md \
+doc/server-reflection.md \
+doc/server_reflection_tutorial.md \
+doc/service_config.md \
+doc/statuscodes.md \
+doc/stress_test_framework.md \
+doc/wait-for-ready.md \
+include/grpc++/alarm.h \
 include/grpc++/channel.h \
 include/grpc++/client_context.h \
 include/grpc++/completion_queue.h \
@@ -771,7 +800,36 @@ include/grpc++/generic/generic_stub.h \
 include/grpc++/grpc++.h \
 include/grpc++/impl/call.h \
 include/grpc++/impl/client_unary_call.h \
+include/grpc++/impl/codegen/async_stream.h \
+include/grpc++/impl/codegen/async_unary_call.h \
+include/grpc++/impl/codegen/call.h \
+include/grpc++/impl/codegen/call_hook.h \
+include/grpc++/impl/codegen/channel_interface.h \
+include/grpc++/impl/codegen/client_context.h \
+include/grpc++/impl/codegen/client_unary_call.h \
+include/grpc++/impl/codegen/completion_queue.h \
+include/grpc++/impl/codegen/completion_queue_tag.h \
+include/grpc++/impl/codegen/config.h \
 include/grpc++/impl/codegen/core_codegen.h \
+include/grpc++/impl/codegen/core_codegen.h \
+include/grpc++/impl/codegen/core_codegen_interface.h \
+include/grpc++/impl/codegen/create_auth_context.h \
+include/grpc++/impl/codegen/grpc_library.h \
+include/grpc++/impl/codegen/method_handler_impl.h \
+include/grpc++/impl/codegen/rpc_method.h \
+include/grpc++/impl/codegen/rpc_service_method.h \
+include/grpc++/impl/codegen/security/auth_context.h \
+include/grpc++/impl/codegen/serialization_traits.h \
+include/grpc++/impl/codegen/server_context.h \
+include/grpc++/impl/codegen/server_interface.h \
+include/grpc++/impl/codegen/service_type.h \
+include/grpc++/impl/codegen/status.h \
+include/grpc++/impl/codegen/status_code_enum.h \
+include/grpc++/impl/codegen/status_helper.h \
+include/grpc++/impl/codegen/string_ref.h \
+include/grpc++/impl/codegen/stub_options.h \
+include/grpc++/impl/codegen/sync_stream.h \
+include/grpc++/impl/codegen/time.h \
 include/grpc++/impl/grpc_library.h \
 include/grpc++/impl/method_handler_impl.h \
 include/grpc++/impl/rpc_method.h \
@@ -802,97 +860,71 @@ include/grpc++/support/string_ref.h \
 include/grpc++/support/stub_options.h \
 include/grpc++/support/sync_stream.h \
 include/grpc++/support/time.h \
-include/grpc++/impl/codegen/async_stream.h \
-include/grpc++/impl/codegen/async_unary_call.h \
-include/grpc++/impl/codegen/call.h \
-include/grpc++/impl/codegen/call_hook.h \
-include/grpc++/impl/codegen/channel_interface.h \
-include/grpc++/impl/codegen/client_context.h \
-include/grpc++/impl/codegen/client_unary_call.h \
-include/grpc++/impl/codegen/completion_queue.h \
-include/grpc++/impl/codegen/completion_queue_tag.h \
-include/grpc++/impl/codegen/config.h \
-include/grpc++/impl/codegen/core_codegen_interface.h \
-include/grpc++/impl/codegen/create_auth_context.h \
-include/grpc++/impl/codegen/grpc_library.h \
-include/grpc++/impl/codegen/method_handler_impl.h \
-include/grpc++/impl/codegen/rpc_method.h \
-include/grpc++/impl/codegen/rpc_service_method.h \
-include/grpc++/impl/codegen/security/auth_context.h \
-include/grpc++/impl/codegen/serialization_traits.h \
-include/grpc++/impl/codegen/server_context.h \
-include/grpc++/impl/codegen/server_interface.h \
-include/grpc++/impl/codegen/service_type.h \
-include/grpc++/impl/codegen/status.h \
-include/grpc++/impl/codegen/status_code_enum.h \
-include/grpc++/impl/codegen/status_helper.h \
-include/grpc++/impl/codegen/string_ref.h \
-include/grpc++/impl/codegen/stub_options.h \
-include/grpc++/impl/codegen/sync_stream.h \
-include/grpc++/impl/codegen/time.h \
-include/grpc/impl/codegen/byte_buffer_reader.h \
-include/grpc/impl/codegen/compression_types.h \
-include/grpc/impl/codegen/connectivity_state.h \
-include/grpc/impl/codegen/grpc_types.h \
-include/grpc/impl/codegen/propagation_bits.h \
-include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/atm.h \
 include/grpc/impl/codegen/atm_gcc_atomic.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/byte_buffer_reader.h \
+include/grpc/impl/codegen/compression_types.h \
+include/grpc/impl/codegen/connectivity_state.h \
+include/grpc/impl/codegen/exec_ctx_fwd.h \
+include/grpc/impl/codegen/gpr_slice.h \
 include/grpc/impl/codegen/gpr_types.h \
+include/grpc/impl/codegen/grpc_types.h \
 include/grpc/impl/codegen/port_platform.h \
+include/grpc/impl/codegen/propagation_bits.h \
 include/grpc/impl/codegen/slice.h \
+include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_windows.h \
-include/grpc++/impl/codegen/core_codegen.h \
-src/cpp/client/secure_credentials.h \
-src/cpp/common/secure_auth_context.h \
-src/cpp/server/secure_server_credentials.h \
-src/cpp/client/create_channel_internal.h \
-src/cpp/common/channel_filter.h \
-src/cpp/server/dynamic_thread_pool.h \
-src/cpp/server/thread_pool_interface.h \
-src/cpp/thread_manager/thread_manager.h \
-src/cpp/client/insecure_credentials.cc \
-src/cpp/client/secure_credentials.cc \
-src/cpp/common/auth_property_iterator.cc \
-src/cpp/common/secure_auth_context.cc \
-src/cpp/common/secure_channel_arguments.cc \
-src/cpp/common/secure_create_auth_context.cc \
-src/cpp/server/insecure_server_credentials.cc \
-src/cpp/server/secure_server_credentials.cc \
+src/cpp/README.md \
 src/cpp/client/channel_cc.cc \
 src/cpp/client/client_context.cc \
 src/cpp/client/create_channel.cc \
 src/cpp/client/create_channel_internal.cc \
+src/cpp/client/create_channel_internal.h \
 src/cpp/client/create_channel_posix.cc \
 src/cpp/client/credentials_cc.cc \
 src/cpp/client/generic_stub.cc \
+src/cpp/client/insecure_credentials.cc \
+src/cpp/client/secure_credentials.cc \
+src/cpp/client/secure_credentials.h \
+src/cpp/codegen/codegen_init.cc \
+src/cpp/common/auth_property_iterator.cc \
 src/cpp/common/channel_arguments.cc \
 src/cpp/common/channel_filter.cc \
+src/cpp/common/channel_filter.h \
 src/cpp/common/completion_queue_cc.cc \
 src/cpp/common/core_codegen.cc \
 src/cpp/common/resource_quota_cc.cc \
 src/cpp/common/rpc_method.cc \
+src/cpp/common/secure_auth_context.cc \
+src/cpp/common/secure_auth_context.h \
+src/cpp/common/secure_channel_arguments.cc \
+src/cpp/common/secure_create_auth_context.cc \
 src/cpp/common/version_cc.cc \
 src/cpp/server/async_generic_service.cc \
 src/cpp/server/create_default_thread_pool.cc \
 src/cpp/server/dynamic_thread_pool.cc \
+src/cpp/server/dynamic_thread_pool.h \
+src/cpp/server/insecure_server_credentials.cc \
+src/cpp/server/secure_server_credentials.cc \
+src/cpp/server/secure_server_credentials.h \
 src/cpp/server/server_builder.cc \
 src/cpp/server/server_cc.cc \
 src/cpp/server/server_context.cc \
 src/cpp/server/server_credentials.cc \
 src/cpp/server/server_posix.cc \
+src/cpp/server/thread_pool_interface.h \
 src/cpp/thread_manager/thread_manager.cc \
+src/cpp/thread_manager/thread_manager.h \
 src/cpp/util/byte_buffer_cc.cc \
 src/cpp/util/slice_cc.cc \
 src/cpp/util/status.cc \
 src/cpp/util/string_ref.cc \
-src/cpp/util/time_cc.cc \
-src/cpp/codegen/codegen_init.cc
+src/cpp/util/time_cc.cc
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index 1e748ba4a8969d550cb59cf76b5bf0171e97fec1..2f9f021db90a541caab877272c90129f6a266f6d 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -760,34 +760,76 @@ WARN_LOGFILE           =
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = include/grpc/byte_buffer.h \
+INPUT                  = doc/PROTOCOL-HTTP2.md \
+doc/PROTOCOL-WEB.md \
+doc/binary-logging.md \
+doc/c-style-guide.md \
+doc/command_line_tool.md \
+doc/compression.md \
+doc/compression_cookbook.md \
+doc/connection-backoff-interop-test-description.md \
+doc/connection-backoff.md \
+doc/connectivity-semantics-and-api.md \
+doc/core/pending_api_cleanups.md \
+doc/cpp-style-guide.md \
+doc/environment_variables.md \
+doc/epoll-polling-engine.md \
+doc/fail_fast.md \
+doc/g_stands_for.md \
+doc/health-checking.md \
+doc/http-grpc-status-mapping.md \
+doc/interop-test-descriptions.md \
+doc/load-balancing.md \
+doc/naming.md \
+doc/negative-http2-interop-test-descriptions.md \
+doc/server-reflection.md \
+doc/server_reflection_tutorial.md \
+doc/service_config.md \
+doc/statuscodes.md \
+doc/stress_test_framework.md \
+doc/wait-for-ready.md \
+include/grpc/byte_buffer.h \
 include/grpc/byte_buffer_reader.h \
+include/grpc/census.h \
 include/grpc/compression.h \
 include/grpc/grpc.h \
 include/grpc/grpc_posix.h \
+include/grpc/grpc_security.h \
 include/grpc/grpc_security_constants.h \
-include/grpc/slice.h \
-include/grpc/slice_buffer.h \
-include/grpc/status.h \
-include/grpc/impl/codegen/byte_buffer_reader.h \
-include/grpc/impl/codegen/compression_types.h \
-include/grpc/impl/codegen/connectivity_state.h \
-include/grpc/impl/codegen/grpc_types.h \
-include/grpc/impl/codegen/propagation_bits.h \
-include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/atm.h \
+include/grpc/impl/codegen/atm.h \
+include/grpc/impl/codegen/atm_gcc_atomic.h \
 include/grpc/impl/codegen/atm_gcc_atomic.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
+include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/byte_buffer_reader.h \
+include/grpc/impl/codegen/compression_types.h \
+include/grpc/impl/codegen/connectivity_state.h \
+include/grpc/impl/codegen/exec_ctx_fwd.h \
+include/grpc/impl/codegen/gpr_slice.h \
+include/grpc/impl/codegen/gpr_slice.h \
+include/grpc/impl/codegen/gpr_types.h \
 include/grpc/impl/codegen/gpr_types.h \
+include/grpc/impl/codegen/grpc_types.h \
 include/grpc/impl/codegen/port_platform.h \
+include/grpc/impl/codegen/port_platform.h \
+include/grpc/impl/codegen/propagation_bits.h \
 include/grpc/impl/codegen/slice.h \
+include/grpc/impl/codegen/slice.h \
+include/grpc/impl/codegen/status.h \
+include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync_generic.h \
+include/grpc/impl/codegen/sync_generic.h \
+include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_windows.h \
-include/grpc/grpc_security.h \
-include/grpc/census.h \
+include/grpc/impl/codegen/sync_windows.h \
+include/grpc/slice.h \
+include/grpc/slice_buffer.h \
+include/grpc/status.h \
 include/grpc/support/alloc.h \
 include/grpc/support/atm.h \
 include/grpc/support/atm_gcc_atomic.h \
@@ -813,18 +855,7 @@ include/grpc/support/tls.h \
 include/grpc/support/tls_gcc.h \
 include/grpc/support/tls_msvc.h \
 include/grpc/support/tls_pthread.h \
-include/grpc/support/useful.h \
-include/grpc/impl/codegen/atm.h \
-include/grpc/impl/codegen/atm_gcc_atomic.h \
-include/grpc/impl/codegen/atm_gcc_sync.h \
-include/grpc/impl/codegen/atm_windows.h \
-include/grpc/impl/codegen/gpr_types.h \
-include/grpc/impl/codegen/port_platform.h \
-include/grpc/impl/codegen/slice.h \
-include/grpc/impl/codegen/sync.h \
-include/grpc/impl/codegen/sync_generic.h \
-include/grpc/impl/codegen/sync_posix.h \
-include/grpc/impl/codegen/sync_windows.h
+include/grpc/support/useful.h
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 6572bd4ddf9a9835d205d43b472f5b393df5d205..ffe83a2ddb3b297db18ec050b9f90bd6272963aa 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -760,487 +760,464 @@ WARN_LOGFILE           =
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = include/grpc/byte_buffer.h \
+INPUT                  = doc/PROTOCOL-HTTP2.md \
+doc/PROTOCOL-WEB.md \
+doc/binary-logging.md \
+doc/c-style-guide.md \
+doc/command_line_tool.md \
+doc/compression.md \
+doc/compression_cookbook.md \
+doc/connection-backoff-interop-test-description.md \
+doc/connection-backoff.md \
+doc/connectivity-semantics-and-api.md \
+doc/core/pending_api_cleanups.md \
+doc/cpp-style-guide.md \
+doc/environment_variables.md \
+doc/epoll-polling-engine.md \
+doc/fail_fast.md \
+doc/g_stands_for.md \
+doc/health-checking.md \
+doc/http-grpc-status-mapping.md \
+doc/interop-test-descriptions.md \
+doc/load-balancing.md \
+doc/naming.md \
+doc/negative-http2-interop-test-descriptions.md \
+doc/server-reflection.md \
+doc/server_reflection_tutorial.md \
+doc/service_config.md \
+doc/statuscodes.md \
+doc/stress_test_framework.md \
+doc/wait-for-ready.md \
+include/grpc/byte_buffer.h \
 include/grpc/byte_buffer_reader.h \
+include/grpc/census.h \
 include/grpc/compression.h \
 include/grpc/grpc.h \
 include/grpc/grpc_posix.h \
+include/grpc/grpc_security.h \
 include/grpc/grpc_security_constants.h \
-include/grpc/slice.h \
-include/grpc/slice_buffer.h \
-include/grpc/status.h \
-include/grpc/impl/codegen/byte_buffer_reader.h \
-include/grpc/impl/codegen/compression_types.h \
-include/grpc/impl/codegen/connectivity_state.h \
-include/grpc/impl/codegen/grpc_types.h \
-include/grpc/impl/codegen/propagation_bits.h \
-include/grpc/impl/codegen/status.h \
+include/grpc/impl/codegen/atm.h \
 include/grpc/impl/codegen/atm.h \
 include/grpc/impl/codegen/atm_gcc_atomic.h \
+include/grpc/impl/codegen/atm_gcc_atomic.h \
+include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/byte_buffer_reader.h \
+include/grpc/impl/codegen/compression_types.h \
+include/grpc/impl/codegen/connectivity_state.h \
+include/grpc/impl/codegen/exec_ctx_fwd.h \
+include/grpc/impl/codegen/gpr_slice.h \
+include/grpc/impl/codegen/gpr_slice.h \
 include/grpc/impl/codegen/gpr_types.h \
+include/grpc/impl/codegen/gpr_types.h \
+include/grpc/impl/codegen/grpc_types.h \
 include/grpc/impl/codegen/port_platform.h \
+include/grpc/impl/codegen/port_platform.h \
+include/grpc/impl/codegen/propagation_bits.h \
 include/grpc/impl/codegen/slice.h \
+include/grpc/impl/codegen/slice.h \
+include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
+include/grpc/impl/codegen/sync.h \
+include/grpc/impl/codegen/sync_generic.h \
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-src/core/ext/lb_policy/grpclb/grpclb.h \
-src/core/ext/lb_policy/grpclb/load_balancer_api.h \
-src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h \
-third_party/nanopb/pb.h \
-third_party/nanopb/pb_common.h \
-third_party/nanopb/pb_decode.h \
-third_party/nanopb/pb_encode.h \
-src/core/ext/load_reporting/load_reporting.h \
-src/core/ext/load_reporting/load_reporting_filter.h \
-src/core/ext/census/aggregation.h \
-src/core/ext/census/base_resources.h \
-src/core/ext/census/census_interface.h \
-src/core/ext/census/census_rpc_stats.h \
-src/core/ext/census/gen/census.pb.h \
-src/core/ext/census/gen/trace_context.pb.h \
-src/core/ext/census/grpc_filter.h \
-src/core/ext/census/mlog.h \
-src/core/ext/census/resource.h \
-src/core/ext/census/rpc_metric_id.h \
-src/core/ext/census/trace_context.h \
-src/core/lib/surface/init.c \
-src/core/lib/channel/channel_args.c \
-src/core/lib/channel/channel_stack.c \
-src/core/lib/channel/channel_stack_builder.c \
-src/core/lib/channel/compress_filter.c \
-src/core/lib/channel/connected_channel.c \
-src/core/lib/channel/deadline_filter.c \
-src/core/lib/channel/handshaker.c \
-src/core/lib/channel/http_client_filter.c \
-src/core/lib/channel/http_server_filter.c \
-src/core/lib/channel/message_size_filter.c \
-src/core/lib/compression/compression.c \
-src/core/lib/compression/message_compress.c \
-src/core/lib/debug/trace.c \
-src/core/lib/http/format_request.c \
-src/core/lib/http/httpcli.c \
-src/core/lib/http/parser.c \
-src/core/lib/iomgr/closure.c \
-src/core/lib/iomgr/combiner.c \
-src/core/lib/iomgr/endpoint.c \
-src/core/lib/iomgr/endpoint_pair_posix.c \
-src/core/lib/iomgr/endpoint_pair_uv.c \
-src/core/lib/iomgr/endpoint_pair_windows.c \
-src/core/lib/iomgr/error.c \
-src/core/lib/iomgr/ev_epoll_linux.c \
-src/core/lib/iomgr/ev_poll_posix.c \
-src/core/lib/iomgr/ev_posix.c \
-src/core/lib/iomgr/exec_ctx.c \
-src/core/lib/iomgr/executor.c \
-src/core/lib/iomgr/iocp_windows.c \
-src/core/lib/iomgr/iomgr.c \
-src/core/lib/iomgr/iomgr_posix.c \
-src/core/lib/iomgr/iomgr_uv.c \
-src/core/lib/iomgr/iomgr_windows.c \
-src/core/lib/iomgr/load_file.c \
-src/core/lib/iomgr/network_status_tracker.c \
-src/core/lib/iomgr/polling_entity.c \
-src/core/lib/iomgr/pollset_set_uv.c \
-src/core/lib/iomgr/pollset_set_windows.c \
-src/core/lib/iomgr/pollset_uv.c \
-src/core/lib/iomgr/pollset_windows.c \
-src/core/lib/iomgr/resolve_address_posix.c \
-src/core/lib/iomgr/resolve_address_uv.c \
-src/core/lib/iomgr/resolve_address_windows.c \
-src/core/lib/iomgr/resource_quota.c \
-src/core/lib/iomgr/sockaddr_utils.c \
-src/core/lib/iomgr/socket_mutator.c \
-src/core/lib/iomgr/socket_utils_common_posix.c \
-src/core/lib/iomgr/socket_utils_linux.c \
-src/core/lib/iomgr/socket_utils_posix.c \
-src/core/lib/iomgr/socket_utils_uv.c \
-src/core/lib/iomgr/socket_utils_windows.c \
-src/core/lib/iomgr/socket_windows.c \
-src/core/lib/iomgr/tcp_client_posix.c \
-src/core/lib/iomgr/tcp_client_uv.c \
-src/core/lib/iomgr/tcp_client_windows.c \
-src/core/lib/iomgr/tcp_posix.c \
-src/core/lib/iomgr/tcp_server_posix.c \
-src/core/lib/iomgr/tcp_server_uv.c \
-src/core/lib/iomgr/tcp_server_windows.c \
-src/core/lib/iomgr/tcp_uv.c \
-src/core/lib/iomgr/tcp_windows.c \
-src/core/lib/iomgr/time_averaged_stats.c \
-src/core/lib/iomgr/timer_generic.c \
-src/core/lib/iomgr/timer_heap.c \
-src/core/lib/iomgr/timer_uv.c \
-src/core/lib/iomgr/udp_server.c \
-src/core/lib/iomgr/unix_sockets_posix.c \
-src/core/lib/iomgr/unix_sockets_posix_noop.c \
-src/core/lib/iomgr/wakeup_fd_cv.c \
 src/core/lib/iomgr/wakeup_fd_eventfd.c \
 src/core/lib/iomgr/wakeup_fd_nospecial.c \
 src/core/lib/iomgr/wakeup_fd_pipe.c \
+src/core/lib/iomgr/wakeup_fd_pipe.h \
 src/core/lib/iomgr/wakeup_fd_posix.c \
+src/core/lib/iomgr/wakeup_fd_posix.h \
+src/core/lib/iomgr/workqueue.h \
 src/core/lib/iomgr/workqueue_uv.c \
+src/core/lib/iomgr/workqueue_uv.h \
 src/core/lib/iomgr/workqueue_windows.c \
+src/core/lib/iomgr/workqueue_windows.h \
 src/core/lib/json/json.c \
+src/core/lib/json/json.h \
+src/core/lib/json/json_common.h \
 src/core/lib/json/json_reader.c \
+src/core/lib/json/json_reader.h \
 src/core/lib/json/json_string.c \
 src/core/lib/json/json_writer.c \
-src/core/lib/slice/percent_encoding.c \
-src/core/lib/slice/slice.c \
-src/core/lib/slice/slice_buffer.c \
-src/core/lib/slice/slice_string_helpers.c \
-src/core/lib/surface/alarm.c \
-src/core/lib/surface/api_trace.c \
-src/core/lib/surface/byte_buffer.c \
-src/core/lib/surface/byte_buffer_reader.c \
-src/core/lib/surface/call.c \
-src/core/lib/surface/call_details.c \
-src/core/lib/surface/call_log_batch.c \
-src/core/lib/surface/channel.c \
-src/core/lib/surface/channel_init.c \
-src/core/lib/surface/channel_ping.c \
-src/core/lib/surface/channel_stack_type.c \
-src/core/lib/surface/completion_queue.c \
-src/core/lib/surface/event_string.c \
-src/core/lib/surface/lame_client.c \
-src/core/lib/surface/metadata_array.c \
-src/core/lib/surface/server.c \
-src/core/lib/surface/validate_metadata.c \
-src/core/lib/surface/version.c \
-src/core/lib/transport/byte_stream.c \
-src/core/lib/transport/connectivity_state.c \
-src/core/lib/transport/mdstr_hash_table.c \
-src/core/lib/transport/metadata.c \
-src/core/lib/transport/metadata_batch.c \
-src/core/lib/transport/pid_controller.c \
-src/core/lib/transport/service_config.c \
-src/core/lib/transport/static_metadata.c \
-src/core/lib/transport/timeout_encoding.c \
-src/core/lib/transport/transport.c \
-src/core/lib/transport/transport_op_string.c \
-src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c \
-src/core/ext/transport/chttp2/transport/bin_decoder.c \
-src/core/ext/transport/chttp2/transport/bin_encoder.c \
-src/core/ext/transport/chttp2/transport/chttp2_plugin.c \
-src/core/ext/transport/chttp2/transport/chttp2_transport.c \
-src/core/ext/transport/chttp2/transport/frame_data.c \
-src/core/ext/transport/chttp2/transport/frame_goaway.c \
-src/core/ext/transport/chttp2/transport/frame_ping.c \
-src/core/ext/transport/chttp2/transport/frame_rst_stream.c \
-src/core/ext/transport/chttp2/transport/frame_settings.c \
-src/core/ext/transport/chttp2/transport/frame_window_update.c \
-src/core/ext/transport/chttp2/transport/hpack_encoder.c \
-src/core/ext/transport/chttp2/transport/hpack_parser.c \
-src/core/ext/transport/chttp2/transport/hpack_table.c \
-src/core/ext/transport/chttp2/transport/huffsyms.c \
-src/core/ext/transport/chttp2/transport/incoming_metadata.c \
-src/core/ext/transport/chttp2/transport/parsing.c \
-src/core/ext/transport/chttp2/transport/status_conversion.c \
-src/core/ext/transport/chttp2/transport/stream_lists.c \
-src/core/ext/transport/chttp2/transport/stream_map.c \
-src/core/ext/transport/chttp2/transport/varint.c \
-src/core/ext/transport/chttp2/transport/writing.c \
-src/core/ext/transport/chttp2/alpn/alpn.c \
-src/core/lib/http/httpcli_security_connector.c \
+src/core/lib/json/json_writer.h \
+src/core/lib/profiling/basic_timers.c \
+src/core/lib/profiling/stap_timers.c \
+src/core/lib/profiling/timers.h \
 src/core/lib/security/context/security_context.c \
+src/core/lib/security/context/security_context.h \
 src/core/lib/security/credentials/composite/composite_credentials.c \
+src/core/lib/security/credentials/composite/composite_credentials.h \
 src/core/lib/security/credentials/credentials.c \
+src/core/lib/security/credentials/credentials.h \
 src/core/lib/security/credentials/credentials_metadata.c \
 src/core/lib/security/credentials/fake/fake_credentials.c \
+src/core/lib/security/credentials/fake/fake_credentials.h \
 src/core/lib/security/credentials/google_default/credentials_generic.c \
 src/core/lib/security/credentials/google_default/google_default_credentials.c \
+src/core/lib/security/credentials/google_default/google_default_credentials.h \
 src/core/lib/security/credentials/iam/iam_credentials.c \
+src/core/lib/security/credentials/iam/iam_credentials.h \
 src/core/lib/security/credentials/jwt/json_token.c \
+src/core/lib/security/credentials/jwt/json_token.h \
 src/core/lib/security/credentials/jwt/jwt_credentials.c \
+src/core/lib/security/credentials/jwt/jwt_credentials.h \
 src/core/lib/security/credentials/jwt/jwt_verifier.c \
+src/core/lib/security/credentials/jwt/jwt_verifier.h \
 src/core/lib/security/credentials/oauth2/oauth2_credentials.c \
+src/core/lib/security/credentials/oauth2/oauth2_credentials.h \
 src/core/lib/security/credentials/plugin/plugin_credentials.c \
+src/core/lib/security/credentials/plugin/plugin_credentials.h \
 src/core/lib/security/credentials/ssl/ssl_credentials.c \
+src/core/lib/security/credentials/ssl/ssl_credentials.h \
+src/core/lib/security/transport/auth_filters.h \
 src/core/lib/security/transport/client_auth_filter.c \
 src/core/lib/security/transport/secure_endpoint.c \
+src/core/lib/security/transport/secure_endpoint.h \
 src/core/lib/security/transport/security_connector.c \
+src/core/lib/security/transport/security_connector.h \
 src/core/lib/security/transport/security_handshaker.c \
+src/core/lib/security/transport/security_handshaker.h \
 src/core/lib/security/transport/server_auth_filter.c \
 src/core/lib/security/transport/tsi_error.c \
+src/core/lib/security/transport/tsi_error.h \
 src/core/lib/security/util/b64.c \
+src/core/lib/security/util/b64.h \
 src/core/lib/security/util/json_util.c \
-src/core/lib/surface/init_secure.c \
-src/core/lib/tsi/fake_transport_security.c \
-src/core/lib/tsi/ssl_transport_security.c \
-src/core/lib/tsi/transport_security.c \
-src/core/ext/transport/chttp2/server/chttp2_server.c \
-src/core/ext/transport/chttp2/client/secure/secure_channel_create.c \
-src/core/ext/client_channel/channel_connectivity.c \
-src/core/ext/client_channel/client_channel.c \
-src/core/ext/client_channel/client_channel_factory.c \
-src/core/ext/client_channel/client_channel_plugin.c \
-src/core/ext/client_channel/connector.c \
-src/core/ext/client_channel/default_initial_connect_string.c \
-src/core/ext/client_channel/http_connect_handshaker.c \
-src/core/ext/client_channel/initial_connect_string.c \
-src/core/ext/client_channel/lb_policy.c \
-src/core/ext/client_channel/lb_policy_factory.c \
-src/core/ext/client_channel/lb_policy_registry.c \
-src/core/ext/client_channel/parse_address.c \
-src/core/ext/client_channel/resolver.c \
-src/core/ext/client_channel/resolver_factory.c \
-src/core/ext/client_channel/resolver_registry.c \
-src/core/ext/client_channel/subchannel.c \
-src/core/ext/client_channel/subchannel_index.c \
-src/core/ext/client_channel/uri_parser.c \
-src/core/ext/transport/chttp2/client/chttp2_connector.c \
-src/core/ext/transport/chttp2/server/insecure/server_chttp2.c \
-src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c \
-src/core/ext/transport/chttp2/client/insecure/channel_create.c \
-src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c \
-src/core/ext/lb_policy/grpclb/grpclb.c \
-src/core/ext/lb_policy/grpclb/load_balancer_api.c \
-src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c \
-third_party/nanopb/pb_common.c \
-third_party/nanopb/pb_decode.c \
-third_party/nanopb/pb_encode.c \
-src/core/ext/lb_policy/pick_first/pick_first.c \
-src/core/ext/lb_policy/round_robin/round_robin.c \
-src/core/ext/resolver/dns/native/dns_resolver.c \
-src/core/ext/resolver/sockaddr/sockaddr_resolver.c \
-src/core/ext/load_reporting/load_reporting.c \
-src/core/ext/load_reporting/load_reporting_filter.c \
-src/core/ext/census/base_resources.c \
-src/core/ext/census/context.c \
-src/core/ext/census/gen/census.pb.c \
-src/core/ext/census/gen/trace_context.pb.c \
-src/core/ext/census/grpc_context.c \
-src/core/ext/census/grpc_filter.c \
-src/core/ext/census/grpc_plugin.c \
-src/core/ext/census/initialize.c \
-src/core/ext/census/mlog.c \
-src/core/ext/census/operation.c \
-src/core/ext/census/placeholders.c \
-src/core/ext/census/resource.c \
-src/core/ext/census/trace_context.c \
-src/core/ext/census/tracing.c \
-src/core/plugin_registry/grpc_plugin_registry.c \
-include/grpc/support/alloc.h \
-include/grpc/support/atm.h \
-include/grpc/support/atm_gcc_atomic.h \
-include/grpc/support/atm_gcc_sync.h \
-include/grpc/support/atm_windows.h \
-include/grpc/support/avl.h \
-include/grpc/support/cmdline.h \
-include/grpc/support/cpu.h \
-include/grpc/support/histogram.h \
-include/grpc/support/host_port.h \
-include/grpc/support/log.h \
-include/grpc/support/log_windows.h \
-include/grpc/support/port_platform.h \
-include/grpc/support/string_util.h \
-include/grpc/support/subprocess.h \
-include/grpc/support/sync.h \
-include/grpc/support/sync_generic.h \
-include/grpc/support/sync_posix.h \
-include/grpc/support/sync_windows.h \
-include/grpc/support/thd.h \
-include/grpc/support/time.h \
-include/grpc/support/tls.h \
-include/grpc/support/tls_gcc.h \
-include/grpc/support/tls_msvc.h \
-include/grpc/support/tls_pthread.h \
-include/grpc/support/useful.h \
-include/grpc/impl/codegen/atm.h \
-include/grpc/impl/codegen/atm_gcc_atomic.h \
-include/grpc/impl/codegen/atm_gcc_sync.h \
-include/grpc/impl/codegen/atm_windows.h \
-include/grpc/impl/codegen/gpr_types.h \
-include/grpc/impl/codegen/port_platform.h \
-include/grpc/impl/codegen/slice.h \
-include/grpc/impl/codegen/sync.h \
-include/grpc/impl/codegen/sync_generic.h \
-include/grpc/impl/codegen/sync_posix.h \
-include/grpc/impl/codegen/sync_windows.h \
-src/core/lib/profiling/timers.h \
-src/core/lib/support/backoff.h \
-src/core/lib/support/block_annotate.h \
-src/core/lib/support/env.h \
-src/core/lib/support/mpscq.h \
-src/core/lib/support/murmur_hash.h \
-src/core/lib/support/stack_lockfree.h \
-src/core/lib/support/string.h \
-src/core/lib/support/string_windows.h \
-src/core/lib/support/thd_internal.h \
-src/core/lib/support/time_precise.h \
-src/core/lib/support/tmpfile.h \
-src/core/lib/profiling/basic_timers.c \
-src/core/lib/profiling/stap_timers.c \
+src/core/lib/security/util/json_util.h \
+src/core/lib/slice/percent_encoding.c \
+src/core/lib/slice/percent_encoding.h \
+src/core/lib/slice/slice.c \
+src/core/lib/slice/slice_buffer.c \
+src/core/lib/slice/slice_internal.h \
+src/core/lib/slice/slice_string_helpers.c \
+src/core/lib/slice/slice_string_helpers.h \
 src/core/lib/support/alloc.c \
 src/core/lib/support/avl.c \
 src/core/lib/support/backoff.c \
+src/core/lib/support/backoff.h \
+src/core/lib/support/block_annotate.h \
 src/core/lib/support/cmdline.c \
 src/core/lib/support/cpu_iphone.c \
 src/core/lib/support/cpu_linux.c \
 src/core/lib/support/cpu_posix.c \
 src/core/lib/support/cpu_windows.c \
+src/core/lib/support/env.h \
 src/core/lib/support/env_linux.c \
 src/core/lib/support/env_posix.c \
 src/core/lib/support/env_windows.c \
@@ -1252,29 +1229,109 @@ src/core/lib/support/log_linux.c \
 src/core/lib/support/log_posix.c \
 src/core/lib/support/log_windows.c \
 src/core/lib/support/mpscq.c \
+src/core/lib/support/mpscq.h \
 src/core/lib/support/murmur_hash.c \
+src/core/lib/support/murmur_hash.h \
 src/core/lib/support/stack_lockfree.c \
+src/core/lib/support/stack_lockfree.h \
 src/core/lib/support/string.c \
+src/core/lib/support/string.h \
 src/core/lib/support/string_posix.c \
 src/core/lib/support/string_util_windows.c \
 src/core/lib/support/string_windows.c \
+src/core/lib/support/string_windows.h \
 src/core/lib/support/subprocess_posix.c \
 src/core/lib/support/subprocess_windows.c \
 src/core/lib/support/sync.c \
 src/core/lib/support/sync_posix.c \
 src/core/lib/support/sync_windows.c \
 src/core/lib/support/thd.c \
+src/core/lib/support/thd_internal.h \
 src/core/lib/support/thd_posix.c \
 src/core/lib/support/thd_windows.c \
 src/core/lib/support/time.c \
 src/core/lib/support/time_posix.c \
 src/core/lib/support/time_precise.c \
+src/core/lib/support/time_precise.h \
 src/core/lib/support/time_windows.c \
 src/core/lib/support/tls_pthread.c \
+src/core/lib/support/tmpfile.h \
 src/core/lib/support/tmpfile_msys.c \
 src/core/lib/support/tmpfile_posix.c \
 src/core/lib/support/tmpfile_windows.c \
-src/core/lib/support/wrap_memcpy.c
+src/core/lib/support/wrap_memcpy.c \
+src/core/lib/surface/README.md \
+src/core/lib/surface/alarm.c \
+src/core/lib/surface/api_trace.c \
+src/core/lib/surface/api_trace.h \
+src/core/lib/surface/byte_buffer.c \
+src/core/lib/surface/byte_buffer_reader.c \
+src/core/lib/surface/call.c \
+src/core/lib/surface/call.h \
+src/core/lib/surface/call_details.c \
+src/core/lib/surface/call_log_batch.c \
+src/core/lib/surface/call_test_only.h \
+src/core/lib/surface/channel.c \
+src/core/lib/surface/channel.h \
+src/core/lib/surface/channel_init.c \
+src/core/lib/surface/channel_init.h \
+src/core/lib/surface/channel_ping.c \
+src/core/lib/surface/channel_stack_type.c \
+src/core/lib/surface/channel_stack_type.h \
+src/core/lib/surface/completion_queue.c \
+src/core/lib/surface/completion_queue.h \
+src/core/lib/surface/event_string.c \
+src/core/lib/surface/event_string.h \
+src/core/lib/surface/init.c \
+src/core/lib/surface/init.h \
+src/core/lib/surface/init_secure.c \
+src/core/lib/surface/lame_client.c \
+src/core/lib/surface/lame_client.h \
+src/core/lib/surface/metadata_array.c \
+src/core/lib/surface/server.c \
+src/core/lib/surface/server.h \
+src/core/lib/surface/validate_metadata.c \
+src/core/lib/surface/version.c \
+src/core/lib/transport/README.md \
+src/core/lib/transport/byte_stream.c \
+src/core/lib/transport/byte_stream.h \
+src/core/lib/transport/connectivity_state.c \
+src/core/lib/transport/connectivity_state.h \
+src/core/lib/transport/mdstr_hash_table.c \
+src/core/lib/transport/mdstr_hash_table.h \
+src/core/lib/transport/metadata.c \
+src/core/lib/transport/metadata.h \
+src/core/lib/transport/metadata_batch.c \
+src/core/lib/transport/metadata_batch.h \
+src/core/lib/transport/pid_controller.c \
+src/core/lib/transport/pid_controller.h \
+src/core/lib/transport/service_config.c \
+src/core/lib/transport/service_config.h \
+src/core/lib/transport/static_metadata.c \
+src/core/lib/transport/static_metadata.h \
+src/core/lib/transport/timeout_encoding.c \
+src/core/lib/transport/timeout_encoding.h \
+src/core/lib/transport/transport.c \
+src/core/lib/transport/transport.h \
+src/core/lib/transport/transport_impl.h \
+src/core/lib/transport/transport_op_string.c \
+src/core/lib/tsi/README.md \
+src/core/lib/tsi/fake_transport_security.c \
+src/core/lib/tsi/fake_transport_security.h \
+src/core/lib/tsi/ssl_transport_security.c \
+src/core/lib/tsi/ssl_transport_security.h \
+src/core/lib/tsi/ssl_types.h \
+src/core/lib/tsi/transport_security.c \
+src/core/lib/tsi/transport_security.h \
+src/core/lib/tsi/transport_security_interface.h \
+src/core/plugin_registry/grpc_plugin_registry.c \
+third_party/nanopb/pb.h \
+third_party/nanopb/pb_common.c \
+third_party/nanopb/pb_common.h \
+third_party/nanopb/pb_decode.c \
+third_party/nanopb/pb_decode.h \
+third_party/nanopb/pb_encode.c \
+third_party/nanopb/pb_encode.h
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/tools/jenkins/build_artifacts.sh b/tools/jenkins/build_artifacts.sh
index c0acbdfb276bbdaf2fa3ddb916fdc72793e59cae..b15db2cdc2b7dfece911c8c1ce3e37ec2fa1a280 100755
--- a/tools/jenkins/build_artifacts.sh
+++ b/tools/jenkins/build_artifacts.sh
@@ -40,7 +40,7 @@ curr_platform="$platform"
 unset platform  # variable named 'platform' breaks the windows build
 
 if [ "$curr_platform" == "linux" ] && [ "$language" == "ruby" ] ; then
-  ./tools/run_tests/build_artifact_ruby.sh
+  ./tools/run_tests/artifacts/build_artifact_ruby.sh
 else
   python tools/run_tests/task_runner.py -f artifact $language $curr_platform $architecture
 fi
diff --git a/tools/jenkins/run_bazel_basic.sh b/tools/jenkins/run_bazel_basic.sh
new file mode 100755
index 0000000000000000000000000000000000000000..648bc791bdca2c47c1d47d523a595bfe9dd7a569
--- /dev/null
+++ b/tools/jenkins/run_bazel_basic.sh
@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Test basic Bazel features
+#
+# NOTE: No empty lines should appear in this file before igncr is set!
+set -ex -o igncr || set -ex
+
+export DOCKERFILE_DIR=tools/dockerfile/test/bazel
+export DOCKER_RUN_SCRIPT=tools/jenkins/run_bazel_basic_in_docker.sh
+exec tools/run_tests/dockerize/build_and_run_docker.sh
diff --git a/tools/jenkins/run_bazel_basic_in_docker.sh b/tools/jenkins/run_bazel_basic_in_docker.sh
new file mode 100755
index 0000000000000000000000000000000000000000..b1d498a07d35ffa3623be7d15a95a50ff388bb20
--- /dev/null
+++ b/tools/jenkins/run_bazel_basic_in_docker.sh
@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Test basic Bazel features
+#
+# NOTE: No empty lines should appear in this file before igncr is set!
+set -ex -o igncr || set -ex
+
+mkdir -p /var/local/git
+git clone /var/local/jenkins/grpc /var/local/git/grpc
+(cd /var/local/jenkins/grpc/ && git submodule foreach 'cd /var/local/git/grpc \
+&& git submodule update --init --reference /var/local/jenkins/grpc/${name} \
+${name}')
+cd /var/local/git/grpc
+bazel build --spawn_strategy=standalone --genrule_strategy=standalone :all test/... examples/cpp/...
diff --git a/tools/jenkins/run_bazel_full.sh b/tools/jenkins/run_bazel_full.sh
new file mode 100755
index 0000000000000000000000000000000000000000..53ed360c077722e31337e7ce497e7f3c5de87ca8
--- /dev/null
+++ b/tools/jenkins/run_bazel_full.sh
@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Test full Bazel
+#
+# NOTE: No empty lines should appear in this file before igncr is set!
+set -ex -o igncr || set -ex
+
+export DOCKERFILE_DIR=tools/dockerfile/test/bazel
+export DOCKER_RUN_SCRIPT=tools/jenkins/run_bazel_full_in_docker.sh
+exec tools/run_tests/dockerize/build_and_run_docker.sh
diff --git a/tools/jenkins/run_bazel_full_in_docker.sh b/tools/jenkins/run_bazel_full_in_docker.sh
new file mode 100755
index 0000000000000000000000000000000000000000..19502f19b75ce447c7bb76bb3572a76678be00e6
--- /dev/null
+++ b/tools/jenkins/run_bazel_full_in_docker.sh
@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Test full Bazel
+#
+# NOTE: No empty lines should appear in this file before igncr is set!
+set -ex -o igncr || set -ex
+
+mkdir -p /var/local/git
+git clone /var/local/jenkins/grpc /var/local/git/grpc
+(cd /var/local/jenkins/grpc/ && git submodule foreach 'cd /var/local/git/grpc \
+&& git submodule update --init --reference /var/local/jenkins/grpc/${name} \
+${name}')
+cd /var/local/git/grpc/test
+bazel test --spawn_strategy=standalone --genrule_strategy=standalone ...
diff --git a/tools/jenkins/run_performance_flamegraphs.sh b/tools/jenkins/run_performance_flamegraphs.sh
new file mode 100755
index 0000000000000000000000000000000000000000..22081e22487cc055b754ac62da5f089f8744e689
--- /dev/null
+++ b/tools/jenkins/run_performance_flamegraphs.sh
@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# This script is invoked by Jenkins and runs full performance test suite.
+set -ex
+
+# Enter the gRPC repo root
+cd $(dirname $0)/../..
+
+# scalability with 32cores c++ benchmarks
+tools/run_tests/run_performance_tests.py \
+    -l c++ \
+    --category scalable \
+    --remote_worker_host grpc-performance-server-32core grpc-performance-client-32core grpc-performance-client2-32core \
+    --perf_args "record -F 97 --call-graph dwarf" \
+    --flame_graph_reports cpp_flamegraphs \
+    || EXIT_CODE=1
+
+# scalability with 32cores go benchmarks
+tools/run_tests/run_performance_tests.py \
+    -l go \
+    --category scalable \
+    --remote_worker_host grpc-performance-server-32core grpc-performance-client-32core grpc-performance-client2-32core \
+    --perf_args "record -F 97 -g" \
+    --flame_graph_reports go_flamegraphs \
+    || EXIT_CODE=1
+
+exit $EXIT_CODE
+
diff --git a/tools/jenkins/run_sweep_performance.sh b/tools/jenkins/run_sweep_performance.sh
index 3b22e25a451602872ede572c1be646ff09031e99..12054dc3dc83a698bd615054393459de6dd38874 100755
--- a/tools/jenkins/run_sweep_performance.sh
+++ b/tools/jenkins/run_sweep_performance.sh
@@ -43,6 +43,7 @@ tools/run_tests/run_performance_tests.py \
     --category sweep \
     --bq_result_table performance_test.performance_experiment_32core \
     --remote_worker_host ${SERVER_HOST} ${CLIENT_HOST1} ${CLIENT_HOST2} \
+    --perf_args "record -F 97 --call-graph dwarf" \
     || EXIT_CODE=1
 
 exit $EXIT_CODE
diff --git a/tools/run_tests/README.md b/tools/run_tests/README.md
index dd727f43091a38d9a31743a1b3297ceb463b32a3..e709ddd2c021718eb2b519826c03beeafb0a4e5f 100644
--- a/tools/run_tests/README.md
+++ b/tools/run_tests/README.md
@@ -22,6 +22,10 @@ The script is also capable of running interop tests for grpc-java and grpc-go, u
 ######Example
 `tools/run_tests/run_interop_tests.py -l csharp -s c++ --use_docker` (run interop tests with C# client and C++ server)
 
+Note: if you see an error like `no space left on device` when running the
+interop tests using Docker, make sure that Docker is building the image files in
+a location with sufficient disk space.
+
 #Performance benchmarks (run_performance_tests.py)
 
 Runs predefined benchmark scenarios for given languages. Besides the simple configuration of running all the scenarios locally,
diff --git a/tools/run_tests/artifacts/__init__.py b/tools/run_tests/artifacts/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..100a624dc9c1bbd89708c58e18cf2666a73f4cc7
--- /dev/null
+++ b/tools/run_tests/artifacts/__init__.py
@@ -0,0 +1,28 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/tools/run_tests/artifact_targets.py b/tools/run_tests/artifacts/artifact_targets.py
similarity index 89%
rename from tools/run_tests/artifact_targets.py
rename to tools/run_tests/artifacts/artifact_targets.py
index 65d34e17e1c4669c9d9b2fd1eb98e19aef888f61..005d99790ad90799f0f4e4526f8312cdff11581f 100644
--- a/tools/run_tests/artifact_targets.py
+++ b/tools/run_tests/artifacts/artifact_targets.py
@@ -35,7 +35,8 @@ import random
 import string
 import sys
 
-import jobset
+sys.path.insert(0, os.path.abspath('..'))
+import python_utils.jobset as jobset
 
 
 def create_docker_jobspec(name, dockerfile_dir, shell_command, environ={},
@@ -113,7 +114,7 @@ class PythonArtifact:
       environ['GRPC_BUILD_MANYLINUX_WHEEL'] = 'TRUE'
       return create_docker_jobspec(self.name,
           'tools/dockerfile/grpc_artifact_python_manylinux_%s' % self.arch,
-          'tools/run_tests/build_artifact_python.sh',
+          'tools/run_tests/artifacts/build_artifact_python.sh',
           environ=environ,
           timeout_seconds=60*60)
     elif self.platform == 'windows':
@@ -125,7 +126,7 @@ class PythonArtifact:
       # seed.  We create a random temp-dir here
       dir = ''.join(random.choice(string.ascii_uppercase) for _ in range(10))
       return create_jobspec(self.name,
-                            ['tools\\run_tests\\build_artifact_python.bat',
+                            ['tools\\run_tests\\artifacts\\build_artifact_python.bat',
                              self.py_version,
                              '32' if self.arch == 'x86' else '64',
                              dir
@@ -136,7 +137,7 @@ class PythonArtifact:
       environ['PYTHON'] = self.py_version
       environ['SKIP_PIP_INSTALL'] = 'TRUE'
       return create_jobspec(self.name,
-                            ['tools/run_tests/build_artifact_python.sh'],
+                            ['tools/run_tests/artifacts/build_artifact_python.sh'],
                             environ=environ)
 
   def __str__(self):
@@ -165,11 +166,11 @@ class RubyArtifact:
           environ['SETARCH_CMD'] = 'linux32'
         return create_docker_jobspec(self.name,
             'tools/dockerfile/grpc_artifact_linux_%s' % self.arch,
-            'tools/run_tests/build_artifact_ruby.sh',
+            'tools/run_tests/artifacts/build_artifact_ruby.sh',
             environ=environ)
       else:
         return create_jobspec(self.name,
-                              ['tools/run_tests/build_artifact_ruby.sh'])
+                              ['tools/run_tests/artifacts/build_artifact_ruby.sh'])
 
 
 class CSharpExtArtifact:
@@ -184,7 +185,7 @@ class CSharpExtArtifact:
   def pre_build_jobspecs(self):
     if self.platform == 'windows':
       return [create_jobspec('prebuild_%s' % self.name,
-                             ['tools\\run_tests\\pre_build_c.bat'],
+                             ['tools\\run_tests\\helper_scripts\\pre_build_c.bat'],
                              shell=True,
                              flake_retries=5,
                              timeout_retries=2)]
@@ -195,7 +196,7 @@ class CSharpExtArtifact:
     if self.platform == 'windows':
       msbuild_platform = 'Win32' if self.arch == 'x86' else self.arch
       return create_jobspec(self.name,
-                            ['tools\\run_tests\\build_artifact_csharp.bat',
+                            ['tools\\run_tests\\artifacts\\build_artifact_csharp.bat',
                              'vsprojects\\grpc_csharp_ext.sln',
                              '/p:Configuration=Release',
                              '/p:PlatformToolset=v120',
@@ -210,14 +211,14 @@ class CSharpExtArtifact:
       if self.platform == 'linux':
         return create_docker_jobspec(self.name,
             'tools/dockerfile/grpc_artifact_linux_%s' % self.arch,
-            'tools/run_tests/build_artifact_csharp.sh',
+            'tools/run_tests/artifacts/build_artifact_csharp.sh',
             environ=environ)
       else:
         archflag = _ARCH_FLAG_MAP[self.arch]
         environ['CFLAGS'] += ' %s %s' % (archflag, _MACOS_COMPAT_FLAG)
         environ['LDFLAGS'] += ' %s' % archflag
         return create_jobspec(self.name,
-                              ['tools/run_tests/build_artifact_csharp.sh'],
+                              ['tools/run_tests/artifacts/build_artifact_csharp.sh'],
                               environ=environ)
 
   def __str__(self):
@@ -245,7 +246,7 @@ class NodeExtArtifact:
   def build_jobspec(self):
     if self.platform == 'windows':
       return create_jobspec(self.name,
-                            ['tools\\run_tests\\build_artifact_node.bat',
+                            ['tools\\run_tests\\artifacts\\build_artifact_node.bat',
                              self.gyp_arch],
                             shell=True)
     else:
@@ -253,10 +254,10 @@ class NodeExtArtifact:
         return create_docker_jobspec(
             self.name,
             'tools/dockerfile/grpc_artifact_linux_{}'.format(self.arch),
-            'tools/run_tests/build_artifact_node.sh {}'.format(self.gyp_arch))
+            'tools/run_tests/artifacts/build_artifact_node.sh {}'.format(self.gyp_arch))
       else:
         return create_jobspec(self.name,
-                              ['tools/run_tests/build_artifact_node.sh',
+                              ['tools/run_tests/artifacts/build_artifact_node.sh',
                                self.gyp_arch])
 
 class PHPArtifact:
@@ -276,10 +277,10 @@ class PHPArtifact:
       return create_docker_jobspec(
           self.name,
           'tools/dockerfile/grpc_artifact_linux_{}'.format(self.arch),
-          'tools/run_tests/build_artifact_php.sh')
+          'tools/run_tests/artifacts/build_artifact_php.sh')
     else:
       return create_jobspec(self.name,
-                            ['tools/run_tests/build_artifact_php.sh'])
+                            ['tools/run_tests/artifacts/build_artifact_php.sh'])
 
 class ProtocArtifact:
   """Builds protoc and protoc-plugin artifacts"""
@@ -306,18 +307,18 @@ class ProtocArtifact:
       if self.platform == 'linux':
         return create_docker_jobspec(self.name,
             'tools/dockerfile/grpc_artifact_protoc',
-            'tools/run_tests/build_artifact_protoc.sh',
+            'tools/run_tests/artifacts/build_artifact_protoc.sh',
             environ=environ)
       else:
         environ['CXXFLAGS'] += ' -std=c++11 -stdlib=libc++ %s' % _MACOS_COMPAT_FLAG
         return create_jobspec(self.name,
-            ['tools/run_tests/build_artifact_protoc.sh'],
+            ['tools/run_tests/artifacts/build_artifact_protoc.sh'],
             environ=environ)
     else:
       generator = 'Visual Studio 12 Win64' if self.arch == 'x64' else 'Visual Studio 12' 
       vcplatform = 'x64' if self.arch == 'x64' else 'Win32'
       return create_jobspec(self.name,
-                            ['tools\\run_tests\\build_artifact_protoc.bat'],
+                            ['tools\\run_tests\\artifacts\\build_artifact_protoc.bat'],
                             environ={'generator': generator,
                                      'Platform': vcplatform})
 
diff --git a/tools/run_tests/build_artifact_csharp.bat b/tools/run_tests/artifacts/build_artifact_csharp.bat
similarity index 100%
rename from tools/run_tests/build_artifact_csharp.bat
rename to tools/run_tests/artifacts/build_artifact_csharp.bat
diff --git a/tools/run_tests/build_artifact_csharp.sh b/tools/run_tests/artifacts/build_artifact_csharp.sh
similarity index 98%
rename from tools/run_tests/build_artifact_csharp.sh
rename to tools/run_tests/artifacts/build_artifact_csharp.sh
index 7438713f5c6f146530b10cb8ebd0a63cf90a75ab..aed04b2745e23929d65cd77afc80681cf7906dd1 100755
--- a/tools/run_tests/build_artifact_csharp.sh
+++ b/tools/run_tests/artifacts/build_artifact_csharp.sh
@@ -30,7 +30,7 @@
 
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 make grpc_csharp_ext
 
diff --git a/tools/run_tests/build_artifact_node.bat b/tools/run_tests/artifacts/build_artifact_node.bat
similarity index 83%
rename from tools/run_tests/build_artifact_node.bat
rename to tools/run_tests/artifacts/build_artifact_node.bat
index 57d55ef19ecef11eebf9087734717f2d2f77c7a6..0a2bc4b9d7dbcd399163cd02f74fc8d196ce02d0 100644
--- a/tools/run_tests/build_artifact_node.bat
+++ b/tools/run_tests/artifacts/build_artifact_node.bat
@@ -27,7 +27,9 @@
 @rem (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 @rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-set node_versions=0.12.0 1.0.0 1.1.0 2.0.0 3.0.0 4.0.0 5.0.0 6.0.0
+set node_versions=1.1.0 2.0.0 3.0.0 4.0.0 5.0.0 6.0.0 7.0.0
+
+set electron_versions=1.0.0 1.1.0 1.2.0 1.3.0 1.4.0
 
 set PATH=%PATH%;C:\Program Files\nodejs\;%APPDATA%\npm
 
@@ -47,6 +49,12 @@ for %%v in (%node_versions%) do (
 
   xcopy /Y /I /S build\stage\* artifacts\ || goto :error
 )
+
+for %%v in (%electron_versions%) do (
+  cmd /V /C "set "HOME=%HOMEDRIVE%%HOMEPATH%\electron-gyp" && call .\node_modules\.bin\node-pre-gyp.cmd configure rebuild package testpackage --runtime=electron --target=%%v --target_arch=%1 --disturl=https://atom.io/download/electron" || goto :error
+
+  xcopy /Y /I /S build\stage\* artifacts\ || goto :error
+)
 if %errorlevel% neq 0 exit /b %errorlevel%
 
 goto :EOF
diff --git a/tools/run_tests/build_artifact_node.sh b/tools/run_tests/artifacts/build_artifact_node.sh
similarity index 81%
rename from tools/run_tests/build_artifact_node.sh
rename to tools/run_tests/artifacts/build_artifact_node.sh
index 9d06472aa4997f8117bb6991f96ac7c32cfbb146..47b1f339fb8a9db026ff5d2a49cd6435ef744813 100755
--- a/tools/run_tests/build_artifact_node.sh
+++ b/tools/run_tests/artifacts/build_artifact_node.sh
@@ -34,7 +34,7 @@ source ~/.nvm/nvm.sh
 nvm use 4
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 rm -rf build || true
 
@@ -42,10 +42,18 @@ mkdir -p artifacts
 
 npm update
 
-node_versions=( 0.12.0 1.0.0 1.1.0 2.0.0 3.0.0 4.0.0 5.0.0 6.0.0 )
+node_versions=( 1.1.0 2.0.0 3.0.0 4.0.0 5.0.0 6.0.0 7.0.0 )
+
+electron_versions=( 1.0.0 1.1.0 1.2.0 1.3.0 1.4.0 )
 
 for version in ${node_versions[@]}
 do
   ./node_modules/.bin/node-pre-gyp configure rebuild package testpackage --target=$version --target_arch=$NODE_TARGET_ARCH
   cp -r build/stage/* artifacts/
 done
+
+for version in ${electron_versions[@]}
+do
+  HOME=~/.electron-gyp ./node_modules/.bin/node-pre-gyp configure rebuild package testpackage --runtime=electron --target=$version --target_arch=$NODE_TARGET_ARCH --disturl=https://atom.io/download/electron
+  cp -r build/stage/* artifacts/
+done
diff --git a/tools/run_tests/build_artifact_php.sh b/tools/run_tests/artifacts/build_artifact_php.sh
similarity index 98%
rename from tools/run_tests/build_artifact_php.sh
rename to tools/run_tests/artifacts/build_artifact_php.sh
index 669447fa9a16254598ca7d0a79a3cbc88de55bb0..c8d55860c16ac0ea28beb3cee5ffb3b8f28a2592 100755
--- a/tools/run_tests/build_artifact_php.sh
+++ b/tools/run_tests/artifacts/build_artifact_php.sh
@@ -31,7 +31,7 @@
 PHP_TARGET_ARCH=$1
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 mkdir -p artifacts
 
diff --git a/tools/run_tests/build_artifact_protoc.bat b/tools/run_tests/artifacts/build_artifact_protoc.bat
similarity index 100%
rename from tools/run_tests/build_artifact_protoc.bat
rename to tools/run_tests/artifacts/build_artifact_protoc.bat
diff --git a/tools/run_tests/build_artifact_protoc.sh b/tools/run_tests/artifacts/build_artifact_protoc.sh
similarity index 98%
rename from tools/run_tests/build_artifact_protoc.sh
rename to tools/run_tests/artifacts/build_artifact_protoc.sh
index 161d3a84d6edd81e8aaea1aac055ca381d81f0b3..26c2280effc7c6affbffda092e2241c453808fcb 100755
--- a/tools/run_tests/build_artifact_protoc.sh
+++ b/tools/run_tests/artifacts/build_artifact_protoc.sh
@@ -33,7 +33,7 @@ source scl_source enable devtoolset-1.1
 
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 make plugins
 
diff --git a/tools/run_tests/build_artifact_python.bat b/tools/run_tests/artifacts/build_artifact_python.bat
similarity index 100%
rename from tools/run_tests/build_artifact_python.bat
rename to tools/run_tests/artifacts/build_artifact_python.bat
diff --git a/tools/run_tests/build_artifact_python.sh b/tools/run_tests/artifacts/build_artifact_python.sh
similarity index 99%
rename from tools/run_tests/build_artifact_python.sh
rename to tools/run_tests/artifacts/build_artifact_python.sh
index 2a1d41fd686862ab39f355dbcead2bc3ca59024f..5a5506029a8d08c064f31f2f9d8cfbd751ddcb30 100755
--- a/tools/run_tests/build_artifact_python.sh
+++ b/tools/run_tests/artifacts/build_artifact_python.sh
@@ -30,7 +30,7 @@
 
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 export GRPC_PYTHON_USE_CUSTOM_BDIST=0
 export GRPC_PYTHON_BUILD_WITH_CYTHON=1
diff --git a/tools/run_tests/build_artifact_ruby.sh b/tools/run_tests/artifacts/build_artifact_ruby.sh
similarity index 98%
rename from tools/run_tests/build_artifact_ruby.sh
rename to tools/run_tests/artifacts/build_artifact_ruby.sh
index 2d97b4068bc646340ca2bfa5ab6b24fa368e26dd..019efb01fddb24edd749a3f74746f811a553daaf 100755
--- a/tools/run_tests/build_artifact_ruby.sh
+++ b/tools/run_tests/artifacts/build_artifact_ruby.sh
@@ -31,7 +31,7 @@ set -ex
 
 SYSTEM=`uname | cut -f 1 -d_`
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 set +ex
 [[ -s /etc/profile.d/rvm.sh ]] && . /etc/profile.d/rvm.sh
 [[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"
diff --git a/tools/run_tests/build_package_node.sh b/tools/run_tests/artifacts/build_package_node.sh
similarity index 99%
rename from tools/run_tests/build_package_node.sh
rename to tools/run_tests/artifacts/build_package_node.sh
index a5636cf87a7f7c64cade7924cb9b5d6c3ac69311..8b5e8c0bc1be1398ae55fa8a2f0ae33bd0afa511 100755
--- a/tools/run_tests/build_package_node.sh
+++ b/tools/run_tests/artifacts/build_package_node.sh
@@ -33,7 +33,7 @@ source ~/.nvm/nvm.sh
 nvm use 4
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 base=$(pwd)
 
diff --git a/tools/run_tests/build_package_php.sh b/tools/run_tests/artifacts/build_package_php.sh
similarity index 98%
rename from tools/run_tests/build_package_php.sh
rename to tools/run_tests/artifacts/build_package_php.sh
index 56e3319ed9b9b56da0f3d552fc9609a238d8a72b..42a8d9f8dfa28bba36759b9f74b7fa4bc5573ada 100755
--- a/tools/run_tests/build_package_php.sh
+++ b/tools/run_tests/artifacts/build_package_php.sh
@@ -30,7 +30,7 @@
 
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 mkdir -p artifacts/
 cp -r $EXTERNAL_GIT_ROOT/architecture={x86,x64},language=php,platform={windows,linux,macos}/artifacts/* artifacts/ || true
diff --git a/tools/run_tests/build_package_python.sh b/tools/run_tests/artifacts/build_package_python.sh
similarity index 98%
rename from tools/run_tests/build_package_python.sh
rename to tools/run_tests/artifacts/build_package_python.sh
index 2511a6ae46598c268fcc1411c3b2b0bbe32a1008..4a1c15ceeeb9a3f3933b472a24dc6d9dda7bdded 100755
--- a/tools/run_tests/build_package_python.sh
+++ b/tools/run_tests/artifacts/build_package_python.sh
@@ -30,7 +30,7 @@
 
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 mkdir -p artifacts/
 
diff --git a/tools/run_tests/build_package_ruby.sh b/tools/run_tests/artifacts/build_package_ruby.sh
similarity index 99%
rename from tools/run_tests/build_package_ruby.sh
rename to tools/run_tests/artifacts/build_package_ruby.sh
index 0a755bddb0b36626728c02a9c4d7036fdffe8891..b4d20d8a4c06ed6819b3d15627e0cb39a1331c67 100755
--- a/tools/run_tests/build_package_ruby.sh
+++ b/tools/run_tests/artifacts/build_package_ruby.sh
@@ -30,7 +30,7 @@
 
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 base=$(pwd)
 
diff --git a/tools/run_tests/distribtest_targets.py b/tools/run_tests/artifacts/distribtest_targets.py
similarity index 99%
rename from tools/run_tests/distribtest_targets.py
rename to tools/run_tests/artifacts/distribtest_targets.py
index a16daac4fe9c04e2f56bf547fedc52d5d64231df..a7535b385216bb0f4c98540826dedd38e2ebd4e0 100644
--- a/tools/run_tests/distribtest_targets.py
+++ b/tools/run_tests/artifacts/distribtest_targets.py
@@ -30,7 +30,11 @@
 
 """Definition of targets run distribution package tests."""
 
-import jobset
+import os.path
+import sys
+
+sys.path.insert(0, os.path.abspath('..'))
+import python_utils.jobset as jobset
 
 
 def create_docker_jobspec(name, dockerfile_dir, shell_command, environ={},
diff --git a/tools/run_tests/package_targets.py b/tools/run_tests/artifacts/package_targets.py
similarity index 94%
rename from tools/run_tests/package_targets.py
rename to tools/run_tests/artifacts/package_targets.py
index 673affeac07e606e1a9d6d4532c28e52104c259a..d490f571c37f684574dbbb30b13d903b160c0116 100644
--- a/tools/run_tests/package_targets.py
+++ b/tools/run_tests/artifacts/package_targets.py
@@ -30,7 +30,12 @@
 
 """Definition of targets to build distribution packages."""
 
-import jobset
+import os.path
+import sys
+
+sys.path.insert(0, os.path.abspath('..'))
+import python_utils.jobset as jobset
+
 
 def create_docker_jobspec(name, dockerfile_dir, shell_command, environ={},
                    flake_retries=0, timeout_retries=0):
@@ -114,7 +119,7 @@ class NodePackage:
     return create_docker_jobspec(
         self.name,
         'tools/dockerfile/grpc_artifact_linux_x64',
-        'tools/run_tests/build_package_node.sh')
+        'tools/run_tests/artifacts/build_package_node.sh')
 
 
 class RubyPackage:
@@ -131,7 +136,7 @@ class RubyPackage:
     return create_docker_jobspec(
         self.name,
         'tools/dockerfile/grpc_artifact_linux_x64',
-        'tools/run_tests/build_package_ruby.sh')
+        'tools/run_tests/artifacts/build_package_ruby.sh')
 
 
 class PythonPackage:
@@ -148,7 +153,7 @@ class PythonPackage:
     return create_docker_jobspec(
         self.name,
         'tools/dockerfile/grpc_artifact_linux_x64',
-        'tools/run_tests/build_package_python.sh')
+        'tools/run_tests/artifacts/build_package_python.sh')
 
 
 class PHPPackage:
@@ -165,7 +170,7 @@ class PHPPackage:
     return create_docker_jobspec(
         self.name,
         'tools/dockerfile/grpc_artifact_linux_x64',
-        'tools/run_tests/build_package_php.sh')
+        'tools/run_tests/artifacts/build_package_php.sh')
 
 
 def targets():
diff --git a/tools/run_tests/build_stats_schema.json b/tools/run_tests/build_stats/build_stats_schema.json
similarity index 100%
rename from tools/run_tests/build_stats_schema.json
rename to tools/run_tests/build_stats/build_stats_schema.json
diff --git a/tools/run_tests/build_stats_schema_no_matrix.json b/tools/run_tests/build_stats/build_stats_schema_no_matrix.json
similarity index 100%
rename from tools/run_tests/build_stats_schema_no_matrix.json
rename to tools/run_tests/build_stats/build_stats_schema_no_matrix.json
diff --git a/tools/run_tests/dockerize/build_docker_and_run_tests.sh b/tools/run_tests/dockerize/build_docker_and_run_tests.sh
index c3219c533d5ec834e55020fbda04d8ac675aab48..b68ac89121cb96948ec695f597cae04da860be97 100755
--- a/tools/run_tests/dockerize/build_docker_and_run_tests.sh
+++ b/tools/run_tests/dockerize/build_docker_and_run_tests.sh
@@ -77,8 +77,6 @@ docker run \
   -v /tmp/ccache:/tmp/ccache \
   -v /tmp/npm-cache:/tmp/npm-cache \
   -v /tmp/xdg-cache-home:/tmp/xdg-cache-home \
-  -v /var/run/docker.sock:/var/run/docker.sock \
-  -v $(which docker):/bin/docker \
   -w /var/local/git/grpc \
   --name=$CONTAINER_NAME \
   $DOCKER_IMAGE_NAME \
diff --git a/tools/run_tests/configs.json b/tools/run_tests/generated/configs.json
similarity index 100%
rename from tools/run_tests/configs.json
rename to tools/run_tests/generated/configs.json
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/generated/sources_and_headers.json
similarity index 98%
rename from tools/run_tests/sources_and_headers.json
rename to tools/run_tests/generated/sources_and_headers.json
index 6ae269cc20dd15b86039d67dafa1bf8214b13dbb..c57b17611be473c2f0ea384e9f3b8cc41e5fe472 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/generated/sources_and_headers.json
@@ -1508,6 +1508,57 @@
     "third_party": false, 
     "type": "target"
   }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c", 
+    "name": "memory_profile_client", 
+    "src": [
+      "test/core/memory_usage/client.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c", 
+    "name": "memory_profile_server", 
+    "src": [
+      "test/core/memory_usage/server.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c", 
+    "name": "memory_profile_test", 
+    "src": [
+      "test/core/memory_usage/memory_usage_test.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
   {
     "deps": [
       "gpr", 
@@ -2772,6 +2823,23 @@
     "third_party": false, 
     "type": "target"
   }, 
+  {
+    "deps": [
+      "grpc", 
+      "grpc++", 
+      "grpc++_test_config", 
+      "grpc++_test_util", 
+      "grpc_test_util", 
+      "http2_client_main"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "http2_client", 
+    "src": [], 
+    "third_party": false, 
+    "type": "target"
+  }, 
   {
     "deps": [
       "gpr", 
@@ -5388,6 +5456,33 @@
     "third_party": false, 
     "type": "lib"
   }, 
+  {
+    "deps": [
+      "grpc", 
+      "grpc++", 
+      "grpc++_test_config", 
+      "grpc++_test_util", 
+      "grpc_test_util"
+    ], 
+    "headers": [
+      "src/proto/grpc/testing/empty.grpc.pb.h", 
+      "src/proto/grpc/testing/empty.pb.h", 
+      "src/proto/grpc/testing/messages.grpc.pb.h", 
+      "src/proto/grpc/testing/messages.pb.h", 
+      "src/proto/grpc/testing/test.grpc.pb.h", 
+      "src/proto/grpc/testing/test.pb.h", 
+      "test/cpp/interop/http2_client.h"
+    ], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "http2_client_main", 
+    "src": [
+      "test/cpp/interop/http2_client.cc", 
+      "test/cpp/interop/http2_client.h"
+    ], 
+    "third_party": false, 
+    "type": "lib"
+  }, 
   {
     "deps": [
       "gpr", 
@@ -5447,6 +5542,7 @@
       "gpr", 
       "grpc", 
       "grpc++", 
+      "grpc++_test_util", 
       "grpc_test_util"
     ], 
     "headers": [
@@ -5525,7 +5621,6 @@
       "test/cpp/qps/driver.h", 
       "test/cpp/qps/histogram.h", 
       "test/cpp/qps/interarrival.h", 
-      "test/cpp/qps/limit_cores.h", 
       "test/cpp/qps/parse_json.h", 
       "test/cpp/qps/qps_worker.h", 
       "test/cpp/qps/report.h", 
@@ -5545,8 +5640,6 @@
       "test/cpp/qps/driver.h", 
       "test/cpp/qps/histogram.h", 
       "test/cpp/qps/interarrival.h", 
-      "test/cpp/qps/limit_cores.cc", 
-      "test/cpp/qps/limit_cores.h", 
       "test/cpp/qps/parse_json.cc", 
       "test/cpp/qps/parse_json.h", 
       "test/cpp/qps/qps_worker.cc", 
@@ -6362,7 +6455,9 @@
       "test/core/end2end/tests/simple_metadata.c", 
       "test/core/end2end/tests/simple_request.c", 
       "test/core/end2end/tests/streaming_error_response.c", 
-      "test/core/end2end/tests/trailing_metadata.c"
+      "test/core/end2end/tests/trailing_metadata.c", 
+      "test/core/end2end/tests/write_buffering.c", 
+      "test/core/end2end/tests/write_buffering_at_end.c"
     ], 
     "third_party": false, 
     "type": "lib"
@@ -6431,7 +6526,9 @@
       "test/core/end2end/tests/simple_metadata.c", 
       "test/core/end2end/tests/simple_request.c", 
       "test/core/end2end/tests/streaming_error_response.c", 
-      "test/core/end2end/tests/trailing_metadata.c"
+      "test/core/end2end/tests/trailing_metadata.c", 
+      "test/core/end2end/tests/write_buffering.c", 
+      "test/core/end2end/tests/write_buffering_at_end.c"
     ], 
     "third_party": false, 
     "type": "lib"
@@ -6631,6 +6728,7 @@
       "include/grpc/impl/codegen/atm_gcc_atomic.h", 
       "include/grpc/impl/codegen/atm_gcc_sync.h", 
       "include/grpc/impl/codegen/atm_windows.h", 
+      "include/grpc/impl/codegen/gpr_slice.h", 
       "include/grpc/impl/codegen/gpr_types.h", 
       "include/grpc/impl/codegen/port_platform.h", 
       "include/grpc/impl/codegen/slice.h", 
@@ -6647,6 +6745,7 @@
       "include/grpc/impl/codegen/atm_gcc_atomic.h", 
       "include/grpc/impl/codegen/atm_gcc_sync.h", 
       "include/grpc/impl/codegen/atm_windows.h", 
+      "include/grpc/impl/codegen/gpr_slice.h", 
       "include/grpc/impl/codegen/gpr_types.h", 
       "include/grpc/impl/codegen/port_platform.h", 
       "include/grpc/impl/codegen/slice.h", 
@@ -6681,6 +6780,8 @@
       "src/core/lib/channel/context.h", 
       "src/core/lib/channel/deadline_filter.h", 
       "src/core/lib/channel/handshaker.h", 
+      "src/core/lib/channel/handshaker_factory.h", 
+      "src/core/lib/channel/handshaker_registry.h", 
       "src/core/lib/channel/http_client_filter.h", 
       "src/core/lib/channel/http_server_filter.h", 
       "src/core/lib/channel/message_size_filter.h", 
@@ -6747,6 +6848,7 @@
       "src/core/lib/json/json_reader.h", 
       "src/core/lib/json/json_writer.h", 
       "src/core/lib/slice/percent_encoding.h", 
+      "src/core/lib/slice/slice_internal.h", 
       "src/core/lib/slice/slice_string_helpers.h", 
       "src/core/lib/surface/api_trace.h", 
       "src/core/lib/surface/call.h", 
@@ -6799,6 +6901,10 @@
       "src/core/lib/channel/deadline_filter.h", 
       "src/core/lib/channel/handshaker.c", 
       "src/core/lib/channel/handshaker.h", 
+      "src/core/lib/channel/handshaker_factory.c", 
+      "src/core/lib/channel/handshaker_factory.h", 
+      "src/core/lib/channel/handshaker_registry.c", 
+      "src/core/lib/channel/handshaker_registry.h", 
       "src/core/lib/channel/http_client_filter.c", 
       "src/core/lib/channel/http_client_filter.h", 
       "src/core/lib/channel/http_server_filter.c", 
@@ -6940,6 +7046,7 @@
       "src/core/lib/slice/percent_encoding.h", 
       "src/core/lib/slice/slice.c", 
       "src/core/lib/slice/slice_buffer.c", 
+      "src/core/lib/slice/slice_internal.h", 
       "src/core/lib/slice/slice_string_helpers.c", 
       "src/core/lib/slice/slice_string_helpers.h", 
       "src/core/lib/surface/alarm.c", 
@@ -7068,6 +7175,7 @@
       "include/grpc/impl/codegen/byte_buffer_reader.h", 
       "include/grpc/impl/codegen/compression_types.h", 
       "include/grpc/impl/codegen/connectivity_state.h", 
+      "include/grpc/impl/codegen/exec_ctx_fwd.h", 
       "include/grpc/impl/codegen/grpc_types.h", 
       "include/grpc/impl/codegen/propagation_bits.h", 
       "include/grpc/impl/codegen/status.h"
@@ -7079,6 +7187,7 @@
       "include/grpc/impl/codegen/byte_buffer_reader.h", 
       "include/grpc/impl/codegen/compression_types.h", 
       "include/grpc/impl/codegen/connectivity_state.h", 
+      "include/grpc/impl/codegen/exec_ctx_fwd.h", 
       "include/grpc/impl/codegen/grpc_types.h", 
       "include/grpc/impl/codegen/propagation_bits.h", 
       "include/grpc/impl/codegen/status.h"
@@ -7549,7 +7658,7 @@
       "include/grpc/grpc_cronet.h", 
       "include/grpc/grpc_security.h", 
       "include/grpc/grpc_security_constants.h", 
-      "third_party/objective_c/Cronet/cronet_c_for_grpc.h"
+      "third_party/Cronet/bidirectional_stream_c.h"
     ], 
     "is_filegroup": true, 
     "language": "c", 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/generated/tests.json
similarity index 97%
rename from tools/run_tests/tests.json
rename to tools/run_tests/generated/tests.json
index b76263b8b986a44891b42d5d60e427c1a1c6cfff..8014f68f6c84de73914f8df92e577eecf98a3919 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -1565,6 +1565,26 @@
       "windows"
     ]
   }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.5, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c", 
+    "name": "memory_profile_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [], 
     "ci_platforms": [
@@ -6080,6 +6100,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -7165,11 +7231,12 @@
   }, 
   {
     "args": [
-      "authority_not_supported"
+      "write_buffering"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
+      "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
@@ -7177,7 +7244,7 @@
     "exclude_iomgrs": [], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_fakesec_test", 
+    "name": "h2_compress_test", 
     "platforms": [
       "windows", 
       "linux", 
@@ -7187,11 +7254,12 @@
   }, 
   {
     "args": [
-      "bad_hostname"
+      "write_buffering_at_end"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
+      "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
@@ -7199,7 +7267,7 @@
     "exclude_iomgrs": [], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_fakesec_test", 
+    "name": "h2_compress_test", 
     "platforms": [
       "windows", 
       "linux", 
@@ -7209,7 +7277,7 @@
   }, 
   {
     "args": [
-      "binary_metadata"
+      "authority_not_supported"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7231,7 +7299,7 @@
   }, 
   {
     "args": [
-      "call_creds"
+      "bad_hostname"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7253,14 +7321,14 @@
   }, 
   {
     "args": [
-      "cancel_after_accept"
+      "binary_metadata"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -7275,7 +7343,7 @@
   }, 
   {
     "args": [
-      "cancel_after_client_done"
+      "call_creds"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7297,7 +7365,7 @@
   }, 
   {
     "args": [
-      "cancel_after_invoke"
+      "cancel_after_accept"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7319,14 +7387,14 @@
   }, 
   {
     "args": [
-      "cancel_before_invoke"
+      "cancel_after_client_done"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -7341,7 +7409,7 @@
   }, 
   {
     "args": [
-      "cancel_in_a_vacuum"
+      "cancel_after_invoke"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7363,7 +7431,7 @@
   }, 
   {
     "args": [
-      "cancel_with_status"
+      "cancel_before_invoke"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7385,14 +7453,14 @@
   }, 
   {
     "args": [
-      "compressed_payload"
+      "cancel_in_a_vacuum"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -7407,7 +7475,7 @@
   }, 
   {
     "args": [
-      "connectivity"
+      "cancel_with_status"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7416,30 +7484,6 @@
     ], 
     "cpu_cost": 0.1, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [
-      "uv"
-    ], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_fakesec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "default_host"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
     "language": "c", 
@@ -7453,29 +7497,7 @@
   }, 
   {
     "args": [
-      "disappearing_server"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [], 
-    "flaky": true, 
-    "language": "c", 
-    "name": "h2_fakesec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "empty_batch"
+      "compressed_payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7497,38 +7519,18 @@
   }, 
   {
     "args": [
-      "filter_call_init_fails"
+      "connectivity"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_fakesec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "filter_causes_close"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "posix"
+    "exclude_iomgrs": [
+      "uv"
     ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_fakesec_test", 
@@ -7541,7 +7543,7 @@
   }, 
   {
     "args": [
-      "filter_latency"
+      "default_host"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7563,29 +7565,7 @@
   }, 
   {
     "args": [
-      "graceful_server_shutdown"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_fakesec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "high_initial_seqno"
+      "disappearing_server"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7595,7 +7575,7 @@
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
-    "flaky": false, 
+    "flaky": true, 
     "language": "c", 
     "name": "h2_fakesec_test", 
     "platforms": [
@@ -7607,7 +7587,7 @@
   }, 
   {
     "args": [
-      "hpack_size"
+      "empty_batch"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7629,7 +7609,7 @@
   }, 
   {
     "args": [
-      "idempotent_request"
+      "filter_call_init_fails"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7651,7 +7631,7 @@
   }, 
   {
     "args": [
-      "invoke_large_request"
+      "filter_causes_close"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7673,7 +7653,7 @@
   }, 
   {
     "args": [
-      "large_metadata"
+      "filter_latency"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7695,14 +7675,14 @@
   }, 
   {
     "args": [
-      "load_reporting_hook"
+      "graceful_server_shutdown"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -7717,7 +7697,7 @@
   }, 
   {
     "args": [
-      "max_concurrent_streams"
+      "high_initial_seqno"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7739,7 +7719,7 @@
   }, 
   {
     "args": [
-      "max_message_length"
+      "hpack_size"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7761,7 +7741,7 @@
   }, 
   {
     "args": [
-      "negative_deadline"
+      "idempotent_request"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7783,7 +7763,7 @@
   }, 
   {
     "args": [
-      "network_status_change"
+      "invoke_large_request"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7805,7 +7785,7 @@
   }, 
   {
     "args": [
-      "no_logging"
+      "large_metadata"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7827,7 +7807,7 @@
   }, 
   {
     "args": [
-      "no_op"
+      "load_reporting_hook"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7849,7 +7829,7 @@
   }, 
   {
     "args": [
-      "payload"
+      "max_concurrent_streams"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7871,7 +7851,7 @@
   }, 
   {
     "args": [
-      "ping"
+      "max_message_length"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7893,7 +7873,7 @@
   }, 
   {
     "args": [
-      "ping_pong_streaming"
+      "negative_deadline"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7915,7 +7895,7 @@
   }, 
   {
     "args": [
-      "registered_call"
+      "network_status_change"
     ], 
     "ci_platforms": [
       "windows", 
@@ -7937,29 +7917,161 @@
   }, 
   {
     "args": [
-      "request_with_flags"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_fakesec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "request_with_payload"
+      "no_logging"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "no_op"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "registered_call"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "request_with_flags"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "request_with_payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -8199,6 +8311,50 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -9167,22 +9323,22 @@
   }, 
   {
     "args": [
-      "authority_not_supported"
+      "write_buffering"
     ], 
     "ci_platforms": [
-      "windows", 
       "linux", 
       "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_full_test", 
+    "name": "h2_fd_test", 
     "platforms": [
-      "windows", 
       "linux", 
       "mac", 
       "posix"
@@ -9190,22 +9346,22 @@
   }, 
   {
     "args": [
-      "bad_hostname"
+      "write_buffering_at_end"
     ], 
     "ci_platforms": [
-      "windows", 
       "linux", 
       "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_full_test", 
+    "name": "h2_fd_test", 
     "platforms": [
-      "windows", 
       "linux", 
       "mac", 
       "posix"
@@ -9213,7 +9369,7 @@
   }, 
   {
     "args": [
-      "binary_metadata"
+      "authority_not_supported"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9236,7 +9392,7 @@
   }, 
   {
     "args": [
-      "call_creds"
+      "bad_hostname"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9259,7 +9415,7 @@
   }, 
   {
     "args": [
-      "cancel_after_accept"
+      "binary_metadata"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9267,7 +9423,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -9282,7 +9438,7 @@
   }, 
   {
     "args": [
-      "cancel_after_client_done"
+      "call_creds"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9305,7 +9461,7 @@
   }, 
   {
     "args": [
-      "cancel_after_invoke"
+      "cancel_after_accept"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9328,7 +9484,7 @@
   }, 
   {
     "args": [
-      "cancel_before_invoke"
+      "cancel_after_client_done"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9336,7 +9492,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -9351,7 +9507,7 @@
   }, 
   {
     "args": [
-      "cancel_in_a_vacuum"
+      "cancel_after_invoke"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9374,7 +9530,7 @@
   }, 
   {
     "args": [
-      "cancel_with_status"
+      "cancel_before_invoke"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9397,7 +9553,7 @@
   }, 
   {
     "args": [
-      "compressed_payload"
+      "cancel_in_a_vacuum"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9405,7 +9561,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -9420,7 +9576,7 @@
   }, 
   {
     "args": [
-      "connectivity"
+      "cancel_with_status"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9430,9 +9586,7 @@
     ], 
     "cpu_cost": 0.1, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [
-      "uv"
-    ], 
+    "exclude_iomgrs": [], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_full_test", 
@@ -9445,7 +9599,7 @@
   }, 
   {
     "args": [
-      "default_host"
+      "compressed_payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9468,7 +9622,7 @@
   }, 
   {
     "args": [
-      "disappearing_server"
+      "connectivity"
     ], 
     "ci_platforms": [
       "windows", 
@@ -9476,10 +9630,12 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [], 
-    "flaky": true, 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
     "language": "c", 
     "name": "h2_full_test", 
     "platforms": [
@@ -9491,7 +9647,53 @@
   }, 
   {
     "args": [
-      "empty_batch"
+      "default_host"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "disappearing_server"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": true, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "empty_batch"
     ], 
     "ci_platforms": [
       "windows", 
@@ -10248,6 +10450,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -11141,6 +11389,44 @@
       "linux"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -12178,6 +12464,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -13306,6 +13638,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -14391,21 +14771,20 @@
   }, 
   {
     "args": [
-      "authority_not_supported"
+      "write_buffering"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
+      "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [
-      "uv"
-    ], 
+    "exclude_iomgrs": [], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_oauth2_test", 
+    "name": "h2_load_reporting_test", 
     "platforms": [
       "windows", 
       "linux", 
@@ -14415,21 +14794,20 @@
   }, 
   {
     "args": [
-      "bad_hostname"
+      "write_buffering_at_end"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
+      "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [
-      "uv"
-    ], 
+    "exclude_iomgrs": [], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_oauth2_test", 
+    "name": "h2_load_reporting_test", 
     "platforms": [
       "windows", 
       "linux", 
@@ -14439,7 +14817,7 @@
   }, 
   {
     "args": [
-      "binary_metadata"
+      "authority_not_supported"
     ], 
     "ci_platforms": [
       "windows", 
@@ -14463,7 +14841,7 @@
   }, 
   {
     "args": [
-      "call_creds"
+      "bad_hostname"
     ], 
     "ci_platforms": [
       "windows", 
@@ -14487,14 +14865,14 @@
   }, 
   {
     "args": [
-      "cancel_after_accept"
+      "binary_metadata"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -14511,7 +14889,7 @@
   }, 
   {
     "args": [
-      "cancel_after_client_done"
+      "call_creds"
     ], 
     "ci_platforms": [
       "windows", 
@@ -14535,7 +14913,7 @@
   }, 
   {
     "args": [
-      "cancel_after_invoke"
+      "cancel_after_accept"
     ], 
     "ci_platforms": [
       "windows", 
@@ -14559,14 +14937,14 @@
   }, 
   {
     "args": [
-      "cancel_before_invoke"
+      "cancel_after_client_done"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -14583,7 +14961,7 @@
   }, 
   {
     "args": [
-      "cancel_in_a_vacuum"
+      "cancel_after_invoke"
     ], 
     "ci_platforms": [
       "windows", 
@@ -14607,7 +14985,7 @@
   }, 
   {
     "args": [
-      "cancel_with_status"
+      "cancel_before_invoke"
     ], 
     "ci_platforms": [
       "windows", 
@@ -14631,14 +15009,14 @@
   }, 
   {
     "args": [
-      "compressed_payload"
+      "cancel_in_a_vacuum"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -14655,7 +15033,55 @@
   }, 
   {
     "args": [
-      "connectivity"
+      "cancel_with_status"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "connectivity"
     ], 
     "ci_platforms": [
       "windows", 
@@ -15517,6 +15943,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -16477,6 +16951,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -17485,6 +18007,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -18421,6 +18991,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -19489,20 +20107,23 @@
   }, 
   {
     "args": [
-      "authority_not_supported"
+      "write_buffering"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
-      "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_ssl_test", 
+    "name": "h2_sockpair_1byte_test", 
     "platforms": [
       "windows", 
       "linux", 
@@ -19512,20 +20133,23 @@
   }, 
   {
     "args": [
-      "bad_hostname"
+      "write_buffering_at_end"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
-      "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_ssl_test", 
+    "name": "h2_sockpair_1byte_test", 
     "platforms": [
       "windows", 
       "linux", 
@@ -19535,7 +20159,53 @@
   }, 
   {
     "args": [
-      "binary_metadata"
+      "authority_not_supported"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "bad_hostname"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "binary_metadata"
     ], 
     "ci_platforms": [
       "windows", 
@@ -20570,6 +21240,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -21653,6 +22369,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_cert_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_cert_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -22615,11 +23377,11 @@
   }, 
   {
     "args": [
-      "authority_not_supported"
+      "write_buffering"
     ], 
     "ci_platforms": [
+      "windows", 
       "linux", 
-      "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
@@ -22629,8 +23391,9 @@
     ], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_uds_test", 
+    "name": "h2_ssl_proxy_test", 
     "platforms": [
+      "windows", 
       "linux", 
       "mac", 
       "posix"
@@ -22638,11 +23401,11 @@
   }, 
   {
     "args": [
-      "bad_hostname"
+      "write_buffering_at_end"
     ], 
     "ci_platforms": [
+      "windows", 
       "linux", 
-      "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
@@ -22652,8 +23415,9 @@
     ], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_uds_test", 
+    "name": "h2_ssl_proxy_test", 
     "platforms": [
+      "windows", 
       "linux", 
       "mac", 
       "posix"
@@ -22661,7 +23425,7 @@
   }, 
   {
     "args": [
-      "binary_metadata"
+      "authority_not_supported"
     ], 
     "ci_platforms": [
       "linux", 
@@ -22684,7 +23448,7 @@
   }, 
   {
     "args": [
-      "call_creds"
+      "bad_hostname"
     ], 
     "ci_platforms": [
       "linux", 
@@ -22707,14 +23471,14 @@
   }, 
   {
     "args": [
-      "cancel_after_accept"
+      "binary_metadata"
     ], 
     "ci_platforms": [
       "linux", 
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -22730,7 +23494,7 @@
   }, 
   {
     "args": [
-      "cancel_after_client_done"
+      "call_creds"
     ], 
     "ci_platforms": [
       "linux", 
@@ -22753,7 +23517,7 @@
   }, 
   {
     "args": [
-      "cancel_after_invoke"
+      "cancel_after_accept"
     ], 
     "ci_platforms": [
       "linux", 
@@ -22776,14 +23540,14 @@
   }, 
   {
     "args": [
-      "cancel_before_invoke"
+      "cancel_after_client_done"
     ], 
     "ci_platforms": [
       "linux", 
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -22799,7 +23563,7 @@
   }, 
   {
     "args": [
-      "cancel_in_a_vacuum"
+      "cancel_after_invoke"
     ], 
     "ci_platforms": [
       "linux", 
@@ -22822,7 +23586,7 @@
   }, 
   {
     "args": [
-      "cancel_with_status"
+      "cancel_before_invoke"
     ], 
     "ci_platforms": [
       "linux", 
@@ -22845,14 +23609,14 @@
   }, 
   {
     "args": [
-      "compressed_payload"
+      "cancel_in_a_vacuum"
     ], 
     "ci_platforms": [
       "linux", 
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -22868,7 +23632,7 @@
   }, 
   {
     "args": [
-      "connectivity"
+      "cancel_with_status"
     ], 
     "ci_platforms": [
       "linux", 
@@ -22891,30 +23655,7 @@
   }, 
   {
     "args": [
-      "disappearing_server"
-    ], 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [
-      "uv"
-    ], 
-    "flaky": true, 
-    "language": "c", 
-    "name": "h2_uds_test", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "empty_batch"
+      "compressed_payload"
     ], 
     "ci_platforms": [
       "linux", 
@@ -22937,14 +23678,14 @@
   }, 
   {
     "args": [
-      "filter_call_init_fails"
+      "connectivity"
     ], 
     "ci_platforms": [
       "linux", 
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -22960,7 +23701,7 @@
   }, 
   {
     "args": [
-      "filter_causes_close"
+      "disappearing_server"
     ], 
     "ci_platforms": [
       "linux", 
@@ -22972,7 +23713,7 @@
     "exclude_iomgrs": [
       "uv"
     ], 
-    "flaky": false, 
+    "flaky": true, 
     "language": "c", 
     "name": "h2_uds_test", 
     "platforms": [
@@ -22983,7 +23724,7 @@
   }, 
   {
     "args": [
-      "filter_latency"
+      "empty_batch"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23006,30 +23747,7 @@
   }, 
   {
     "args": [
-      "graceful_server_shutdown"
-    ], 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [
-      "uv"
-    ], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uds_test", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "high_initial_seqno"
+      "filter_call_init_fails"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23052,7 +23770,7 @@
   }, 
   {
     "args": [
-      "hpack_size"
+      "filter_causes_close"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23075,7 +23793,7 @@
   }, 
   {
     "args": [
-      "idempotent_request"
+      "filter_latency"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23098,14 +23816,14 @@
   }, 
   {
     "args": [
-      "invoke_large_request"
+      "graceful_server_shutdown"
     ], 
     "ci_platforms": [
       "linux", 
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -23121,7 +23839,7 @@
   }, 
   {
     "args": [
-      "large_metadata"
+      "high_initial_seqno"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23144,7 +23862,7 @@
   }, 
   {
     "args": [
-      "load_reporting_hook"
+      "hpack_size"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23167,7 +23885,7 @@
   }, 
   {
     "args": [
-      "max_concurrent_streams"
+      "idempotent_request"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23190,7 +23908,7 @@
   }, 
   {
     "args": [
-      "max_message_length"
+      "invoke_large_request"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23213,7 +23931,7 @@
   }, 
   {
     "args": [
-      "negative_deadline"
+      "large_metadata"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23236,7 +23954,7 @@
   }, 
   {
     "args": [
-      "network_status_change"
+      "load_reporting_hook"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23259,7 +23977,7 @@
   }, 
   {
     "args": [
-      "no_logging"
+      "max_concurrent_streams"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23282,7 +24000,7 @@
   }, 
   {
     "args": [
-      "no_op"
+      "max_message_length"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23305,7 +24023,99 @@
   }, 
   {
     "args": [
-      "payload"
+      "negative_deadline"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "network_status_change"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "no_logging"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "no_op"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "payload"
     ], 
     "ci_platforms": [
       "linux", 
@@ -23671,6 +24481,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -24731,6 +25587,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -25791,6 +26693,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -26736,22 +27684,22 @@
   }, 
   {
     "args": [
-      "authority_not_supported"
+      "write_buffering"
     ], 
     "ci_platforms": [
-      "windows", 
       "linux", 
       "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_full_nosec_test", 
+    "name": "h2_fd_nosec_test", 
     "platforms": [
-      "windows", 
       "linux", 
       "mac", 
       "posix"
@@ -26759,7 +27707,53 @@
   }, 
   {
     "args": [
-      "bad_hostname"
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "authority_not_supported"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "bad_hostname"
     ], 
     "ci_platforms": [
       "windows", 
@@ -27794,6 +28788,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -28668,6 +29708,44 @@
       "linux"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -29682,6 +30760,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -30786,6 +31910,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -31848,21 +33020,43 @@
   }, 
   {
     "args": [
-      "authority_not_supported"
+      "write_buffering"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
+      "mac", 
       "posix"
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [
-      "uv"
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
     ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
     "flaky": false, 
     "language": "c", 
-    "name": "h2_proxy_nosec_test", 
+    "name": "h2_load_reporting_nosec_test", 
     "platforms": [
       "windows", 
       "linux", 
@@ -31872,7 +33066,7 @@
   }, 
   {
     "args": [
-      "bad_hostname"
+      "authority_not_supported"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31896,7 +33090,7 @@
   }, 
   {
     "args": [
-      "binary_metadata"
+      "bad_hostname"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31920,14 +33114,14 @@
   }, 
   {
     "args": [
-      "cancel_after_accept"
+      "binary_metadata"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -31944,14 +33138,14 @@
   }, 
   {
     "args": [
-      "cancel_after_client_done"
+      "cancel_after_accept"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -31968,14 +33162,14 @@
   }, 
   {
     "args": [
-      "cancel_after_invoke"
+      "cancel_after_client_done"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -31992,7 +33186,7 @@
   }, 
   {
     "args": [
-      "cancel_before_invoke"
+      "cancel_after_invoke"
     ], 
     "ci_platforms": [
       "windows", 
@@ -32016,7 +33210,7 @@
   }, 
   {
     "args": [
-      "cancel_in_a_vacuum"
+      "cancel_before_invoke"
     ], 
     "ci_platforms": [
       "windows", 
@@ -32040,7 +33234,7 @@
   }, 
   {
     "args": [
-      "cancel_with_status"
+      "cancel_in_a_vacuum"
     ], 
     "ci_platforms": [
       "windows", 
@@ -32064,14 +33258,14 @@
   }, 
   {
     "args": [
-      "default_host"
+      "cancel_with_status"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -32088,7 +33282,7 @@
   }, 
   {
     "args": [
-      "disappearing_server"
+      "default_host"
     ], 
     "ci_platforms": [
       "windows", 
@@ -32100,7 +33294,7 @@
     "exclude_iomgrs": [
       "uv"
     ], 
-    "flaky": true, 
+    "flaky": false, 
     "language": "c", 
     "name": "h2_proxy_nosec_test", 
     "platforms": [
@@ -32112,7 +33306,7 @@
   }, 
   {
     "args": [
-      "empty_batch"
+      "disappearing_server"
     ], 
     "ci_platforms": [
       "windows", 
@@ -32124,7 +33318,7 @@
     "exclude_iomgrs": [
       "uv"
     ], 
-    "flaky": false, 
+    "flaky": true, 
     "language": "c", 
     "name": "h2_proxy_nosec_test", 
     "platforms": [
@@ -32136,7 +33330,31 @@
   }, 
   {
     "args": [
-      "filter_call_init_fails"
+      "empty_batch"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "filter_call_init_fails"
     ], 
     "ci_platforms": [
       "windows", 
@@ -32782,6 +34000,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -33766,6 +35032,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -34678,6 +35992,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -35718,6 +37080,58 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "authority_not_supported"
@@ -36753,10 +38167,56 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "write_buffering"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering_at_end"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36780,7 +38240,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36804,7 +38264,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36828,7 +38288,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36852,7 +38312,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36876,7 +38336,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36900,7 +38360,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36924,7 +38384,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36948,7 +38408,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36972,7 +38432,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -36996,7 +38456,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37020,7 +38480,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37044,7 +38504,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37068,7 +38528,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37092,7 +38552,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37116,7 +38576,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37140,7 +38600,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37164,7 +38624,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37188,7 +38648,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37212,7 +38672,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37236,7 +38696,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37260,7 +38720,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37284,7 +38744,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37308,7 +38768,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37332,7 +38792,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37356,7 +38816,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37380,7 +38840,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37404,7 +38864,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37428,7 +38888,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37452,7 +38912,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37476,7 +38936,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37500,7 +38960,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37524,7 +38984,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37548,7 +39008,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37572,7 +39032,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37609,7 +39069,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37646,7 +39106,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37683,7 +39143,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37720,7 +39180,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37757,7 +39217,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37794,7 +39254,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37831,7 +39291,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37868,7 +39328,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37905,7 +39365,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37942,7 +39402,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -37979,7 +39439,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38016,7 +39476,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
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     "ci_platforms": [
@@ -38053,7 +39513,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38090,7 +39550,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38127,7 +39587,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38164,7 +39624,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38201,7 +39661,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38238,7 +39698,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38275,7 +39735,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38312,7 +39772,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38349,7 +39809,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38386,7 +39846,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38423,7 +39883,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38460,7 +39920,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38497,7 +39957,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38534,7 +39994,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38571,7 +40031,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38608,7 +40068,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38645,7 +40105,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38682,7 +40142,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38719,7 +40179,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38756,7 +40216,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -38793,7 +40253,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_500kib_resource_quota\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"resource_quota_size\": 512000, \"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -40171,7 +41631,29 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/085865a209776911782f592c9f30ffe0ad3814a0"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/08455b3ef9d516deb8155d8db7d51c43ce0ff07a"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/085865a209776911782f592c9f30ffe0ad3814a0"
     ], 
     "ci_platforms": [
       "linux"
@@ -40895,6 +42377,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/0d19e60f4eb1b729e272dd5dec68e8b67f03a5f4"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/0d604693a9d3e76f54d28a26142abd729b0a9acd"
@@ -41907,6 +43411,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/14064ac4844c709b247a4345a92d8be9766785c4"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/143789594154049441d565b65ce725fc4f8c12bc"
@@ -42677,6 +44203,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/1901234bd7c9cb6ee19ff8b17179c481bdc7c5f2"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/190c4ca0cf29c99bc987d2792c7f62e1007c0245"
@@ -43777,6 +45325,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/20ff1f8d5d34cb01d58aa334dc46a6644e6e1d12"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/21357c3613a47180eb668b1c6c849ce9096a46eb"
@@ -44041,6 +45611,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/2378c3f1206f20711468391ce739116ffe58374b"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/23982956d17d2f55e61a5d9111b1c0c7ee530214"
@@ -48639,6 +50231,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/40640a91fda4e4e42d3063a28b9ffbba1b8c3701"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/40b4b92460c4e76a39af9042fb3d86d491a98e16"
@@ -50157,6 +51771,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/49f564289c79de9e0342f8b0821a167bc8c5ec00"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/49ff30e0f070fe37b642dd0d361c5cbca139f223"
@@ -50971,6 +52607,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/507865c4a5ce880b80400d93fa85def2682581cb"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/507b8ecbb9fd3eea9084087bce22a94cca8a7c41"
@@ -53303,6 +54961,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/5f2fdb01d8ff632803ca2b732a7c088c6843d7d3"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/5f52309deaa1b641fe199889d18f921d6909fc14"
@@ -53679,7 +55359,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/61f410c711bc5d53be9e932217ebd035f2716417"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/61de97a9d6c4b082602c02277d8d763921f5f95b"
     ], 
     "ci_platforms": [
       "linux"
@@ -53701,7 +55381,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/622a3505d10767b795fc2c2922c0d5305d9b84e6"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/61f410c711bc5d53be9e932217ebd035f2716417"
     ], 
     "ci_platforms": [
       "linux"
@@ -53723,7 +55403,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/6230cce2862a18c4c92dc6fb4e034a1d15e1ff18"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/622a3505d10767b795fc2c2922c0d5305d9b84e6"
     ], 
     "ci_platforms": [
       "linux"
@@ -53745,7 +55425,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/6245a105123761558a71a9207b3048d2f3d691f0"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/6230cce2862a18c4c92dc6fb4e034a1d15e1ff18"
     ], 
     "ci_platforms": [
       "linux"
@@ -53767,7 +55447,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/629eac0e7443a273b5c351757c03fe15a0b87c1c"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/6245a105123761558a71a9207b3048d2f3d691f0"
     ], 
     "ci_platforms": [
       "linux"
@@ -53789,7 +55469,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/62c995646f15be1819bd13e32a60af46297d73b4"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/629eac0e7443a273b5c351757c03fe15a0b87c1c"
     ], 
     "ci_platforms": [
       "linux"
@@ -53811,7 +55491,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/62fbfe90a1b9ac471bc2644c896f64515f6b3c7e"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/62b039b8a318cc08471f13629da08c68c414d8e7"
     ], 
     "ci_platforms": [
       "linux"
@@ -53833,7 +55513,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/634d809c430738b89f0e677eec36506e537e86b3"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/62c995646f15be1819bd13e32a60af46297d73b4"
     ], 
     "ci_platforms": [
       "linux"
@@ -53855,7 +55535,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/63626e71d4e8e15905f13933f5b88d89073b3411"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/62fbfe90a1b9ac471bc2644c896f64515f6b3c7e"
     ], 
     "ci_platforms": [
       "linux"
@@ -53877,7 +55557,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/638c36cfe098b98008e594eddf90fdacfc078fae"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/634d809c430738b89f0e677eec36506e537e86b3"
     ], 
     "ci_platforms": [
       "linux"
@@ -53899,7 +55579,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/63b74d17bfbd015bb55dda59a05101bee001369c"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/63626e71d4e8e15905f13933f5b88d89073b3411"
     ], 
     "ci_platforms": [
       "linux"
@@ -53921,7 +55601,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/63b91deaac58a7b64fb5999628ff3ff5d32b719d"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/638c36cfe098b98008e594eddf90fdacfc078fae"
     ], 
     "ci_platforms": [
       "linux"
@@ -53943,7 +55623,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/63babc04d35adbe48add6e93386dfc838b0bbd25"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/63b74d17bfbd015bb55dda59a05101bee001369c"
     ], 
     "ci_platforms": [
       "linux"
@@ -53965,7 +55645,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/63d83cb5580d3222eb5e2d7982f7f995634ba5c1"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/63b91deaac58a7b64fb5999628ff3ff5d32b719d"
     ], 
     "ci_platforms": [
       "linux"
@@ -53987,7 +55667,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/6421db654fff309bc191aba0330fbcd1347655e3"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/63babc04d35adbe48add6e93386dfc838b0bbd25"
     ], 
     "ci_platforms": [
       "linux"
@@ -54009,7 +55689,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/645b8377f905399af625a01c76ff088745fe1640"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/63d83cb5580d3222eb5e2d7982f7f995634ba5c1"
     ], 
     "ci_platforms": [
       "linux"
@@ -54031,7 +55711,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/646c501021c79bf6eb1a39a9bcc82e018f31bca2"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/641739453f7d4d3b55a1c7b79bed7da6dfd62ae0"
     ], 
     "ci_platforms": [
       "linux"
@@ -54053,7 +55733,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/649cf0ee983cb5792042687181ce7e4d81f090a5"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/6421db654fff309bc191aba0330fbcd1347655e3"
     ], 
     "ci_platforms": [
       "linux"
@@ -54075,7 +55755,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/64c572e594c2d491a902e8fdff7b617ac0c6881b"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/645b8377f905399af625a01c76ff088745fe1640"
     ], 
     "ci_platforms": [
       "linux"
@@ -54097,7 +55777,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/64ce7e5553de2c081991af4fc386bffdd8d2e210"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/646c501021c79bf6eb1a39a9bcc82e018f31bca2"
     ], 
     "ci_platforms": [
       "linux"
@@ -54119,7 +55799,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/64d55e872c2148eefb0d7c3df101fd955b709f24"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/649cf0ee983cb5792042687181ce7e4d81f090a5"
     ], 
     "ci_platforms": [
       "linux"
@@ -54141,7 +55821,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/64eb970cc80162a4b80d49364f4227db3429e156"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/64c572e594c2d491a902e8fdff7b617ac0c6881b"
     ], 
     "ci_platforms": [
       "linux"
@@ -54163,7 +55843,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/6531f1c311678c9247ad6820519bc7e73f56cb81"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/64ce7e5553de2c081991af4fc386bffdd8d2e210"
     ], 
     "ci_platforms": [
       "linux"
@@ -54185,7 +55865,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/655b880459e6e00100727af9df52b64f6d77a653"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/64d55e872c2148eefb0d7c3df101fd955b709f24"
     ], 
     "ci_platforms": [
       "linux"
@@ -54207,7 +55887,95 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/655f952ec49cbc6176ad1bcfa45a87bd6c3542f0"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/64eb970cc80162a4b80d49364f4227db3429e156"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/6531f1c311678c9247ad6820519bc7e73f56cb81"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/655b880459e6e00100727af9df52b64f6d77a653"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/655f952ec49cbc6176ad1bcfa45a87bd6c3542f0"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/6589505362ffb5164a3c7cb1b9feadcddfba44e9"
     ], 
     "ci_platforms": [
       "linux"
@@ -56141,6 +57909,50 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/724f5400f19e5a0be97022341c39eeaaaffeb390"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/7254b9ff59ab3fcf345effdabbc25ebd2e907b23"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/727f43500183aec9c0d9be7d2363fa1761cda5d5"
@@ -57131,6 +58943,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/784d6f5c093ab5360670173ce001e1a446f95822"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/788f18727a0aeb5e200527bca7c889c9954be343"
@@ -57219,6 +59053,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/79328fdc89d0af0e38da089dab062fd3ea5aae59"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/7957953ca449974ec39c6a137c0acdedb71c3b02"
@@ -57417,6 +59273,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/7a2569f4daf4480ad142cb4ee7c675bed82db74c"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/7a5a769942efac79863bb154cf1e7574e6d98e22"
@@ -59397,6 +61275,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/87a300cd25d2e57745bd00499d4d2352a10a2fa1"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/87add83a18a25fe585df8adc124eae6d70733f74"
@@ -59793,6 +61693,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/8a1c629910280f8beebb88687696de98da988ecc"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/8a4183e6bb75036228a42039d678fca0ea6751b7"
@@ -60651,6 +62573,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/8ff7b1568d2da2e4196c2e28617e1911d62021e6"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/901c9a33205897999e7e78063ccdc5d363267568"
@@ -61597,6 +63541,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/982f375b183d984958667461c7767206062eb4cb"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/984b6ee241b92be62923c6dc5bacaadb36183b89"
@@ -61663,6 +63629,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/98739af631223fa05ad88f1e63a52052a9bb4b1c"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/988bd333d5dabe1561cf4429e7481ff110be0da4"
@@ -63797,6 +65785,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/a78bca1ef8829d720dd5dedac3a9d4d12684da34"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/a7ccc1f7db49512983fe4d42c16b2160357e3585"
@@ -64523,6 +66533,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/ac763d89466ebfad676e75be0076831c03fe2a5d"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/ac7b2971ff39a368145148524511dd68df83d522"
@@ -64789,7 +66821,51 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/af990e5c81c307c188a79f4cdfdae4e8e15dc4a2"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/af990e5c81c307c188a79f4cdfdae4e8e15dc4a2"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/afd047f5586f07990fa2efd6c67d3a7c55099c53"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/afd6dab057fcf62e73429067d983a5f442f3a70e"
     ], 
     "ci_platforms": [
       "linux"
@@ -64811,7 +66887,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/afd047f5586f07990fa2efd6c67d3a7c55099c53"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/aff1fdfe79c104bce110cec92e1e021caf012fde"
     ], 
     "ci_platforms": [
       "linux"
@@ -64833,7 +66909,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/afd6dab057fcf62e73429067d983a5f442f3a70e"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b05cbc7820c94bb3ee46dd3869ea39923338b4ba"
     ], 
     "ci_platforms": [
       "linux"
@@ -64855,7 +66931,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/aff1fdfe79c104bce110cec92e1e021caf012fde"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b06102e16c740796a9d30e07b9e564b65f7513da"
     ], 
     "ci_platforms": [
       "linux"
@@ -64877,7 +66953,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b05cbc7820c94bb3ee46dd3869ea39923338b4ba"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b0ff62377b87b846f720a70f0b7f7bdc76aa1315"
     ], 
     "ci_platforms": [
       "linux"
@@ -64899,7 +66975,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b06102e16c740796a9d30e07b9e564b65f7513da"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b129aaeced0d135d8431960a3b3f85bef20f552b"
     ], 
     "ci_platforms": [
       "linux"
@@ -64921,7 +66997,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b0ff62377b87b846f720a70f0b7f7bdc76aa1315"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b12be9771ea0f5b687f50fa9abe5cb8bb688fa6a"
     ], 
     "ci_platforms": [
       "linux"
@@ -64943,7 +67019,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b129aaeced0d135d8431960a3b3f85bef20f552b"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b165523f699e6ae9b2ad15873b9d56465d1af546"
     ], 
     "ci_platforms": [
       "linux"
@@ -64965,7 +67041,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b12be9771ea0f5b687f50fa9abe5cb8bb688fa6a"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b1e28018e26e6baaba5a907e5e6ff9b7a7942018"
     ], 
     "ci_platforms": [
       "linux"
@@ -64987,7 +67063,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b1e28018e26e6baaba5a907e5e6ff9b7a7942018"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b23f1233d0e21c4aaaebe2fe5931903698b2408c"
     ], 
     "ci_platforms": [
       "linux"
@@ -65009,7 +67085,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b23f1233d0e21c4aaaebe2fe5931903698b2408c"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b2432248370f7590e894c54f2dd13fe9df9fa53e"
     ], 
     "ci_platforms": [
       "linux"
@@ -65031,7 +67107,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b2432248370f7590e894c54f2dd13fe9df9fa53e"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b262c677b8c46262f1fc4982f5abf4ef603abe1c"
     ], 
     "ci_platforms": [
       "linux"
@@ -65053,7 +67129,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b262c677b8c46262f1fc4982f5abf4ef603abe1c"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b29d3c87c76355ce07ea4d4c354bf9d40294abb3"
     ], 
     "ci_platforms": [
       "linux"
@@ -65075,7 +67151,7 @@
   }, 
   {
     "args": [
-      "test/core/end2end/fuzzers/api_fuzzer_corpus/b29d3c87c76355ce07ea4d4c354bf9d40294abb3"
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b2a5ec3ef40c68d594638218e3c943a479f82215"
     ], 
     "ci_platforms": [
       "linux"
@@ -66239,6 +68315,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b92b1c5e0dba009a9516e7185f5df019c62c5cc9"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/b9318513eb6b1db553855cd062ebbd4d1db9b846"
@@ -68373,6 +70471,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/c5cd7af16e7bc0049445d5a0b92a3d4b7e5e3533"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/c5dbc50d9174bde5542b2bb18c63f6583a23ff13"
@@ -71871,6 +73991,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/crash-da39a3ee5e6b4b0d3255bfef95601890afd80709"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/crash-dc6abf90d5e8e1b96f7e25f418b1a7f572e6a738"
@@ -75039,6 +77181,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/e28ffd8c2816f12f6395805199c792d1718191df"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/e29bab478641dd412057dfb6b0a0d78afd96dd60"
@@ -76513,6 +78677,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/ec823f4018389e64a99f6580277fba28df6bd136"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/ec89eb7e84e6cf7859ab478362e0ae5227a5e154"
@@ -76843,6 +79029,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/ee2c1ac1e668f22836cf25a59495e778b0e2c7a8"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/ee624b408f8a50c79cdaebf4fb4195e6162b70da"
@@ -76865,6 +79073,50 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/ee6855178435d2046d8763ecae46e1e0a71a95f4"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/eeb310d91038cb02862e187e68c5d6578233485b"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/eed65ac63a044c87423f333f3b9c5f0d3bc7bd3b"
@@ -77129,6 +79381,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/f07bc2907c95f2aeb79ca60e2ad826e13b848f45"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/f0a7e39c194ee3f30312ae2f4827bdbd43416a42"
@@ -78779,6 +81053,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/fb655905396b768cf3ff015afdb0b564dae2cdfd"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/fb76689d3c70bd5927b3256eda9738a2208e2b13"
@@ -79197,6 +81493,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/fdb038087233cd176746558875932029f779221d"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/fdecd05733278ece9993eb2bef13917675cc062c"
diff --git a/tools/run_tests/build_csharp.sh b/tools/run_tests/helper_scripts/build_csharp.sh
similarity index 97%
rename from tools/run_tests/build_csharp.sh
rename to tools/run_tests/helper_scripts/build_csharp.sh
index 48ce11a10b7b6ed619eef4d1fa18697e70d7bb7b..84c5b1c77786969fc9cf930613c6a35ffcda2eb2 100755
--- a/tools/run_tests/build_csharp.sh
+++ b/tools/run_tests/helper_scripts/build_csharp.sh
@@ -30,7 +30,7 @@
 
 set -ex
 
-cd $(dirname $0)/../../src/csharp
+cd $(dirname $0)/../../../src/csharp
 
 # overriding NativeDependenciesConfigurationUnix is needed to make gcov code coverage work.
 xbuild /p:Configuration=$MSBUILD_CONFIG /p:NativeDependenciesConfigurationUnix=$CONFIG Grpc.sln
diff --git a/tools/run_tests/build_csharp_coreclr.bat b/tools/run_tests/helper_scripts/build_csharp_coreclr.bat
similarity index 98%
rename from tools/run_tests/build_csharp_coreclr.bat
rename to tools/run_tests/helper_scripts/build_csharp_coreclr.bat
index b6e3ccbd2b88d3cbb023de50aee2da84aba3f837..78e5f5998b810db19483d003618e2392bdf445c5 100644
--- a/tools/run_tests/build_csharp_coreclr.bat
+++ b/tools/run_tests/helper_scripts/build_csharp_coreclr.bat
@@ -29,7 +29,7 @@
 
 setlocal
 
-cd /d %~dp0\..\..\src\csharp
+cd /d %~dp0\..\..\..\src\csharp
 
 dotnet restore . || goto :error
 
diff --git a/tools/run_tests/build_csharp_coreclr.sh b/tools/run_tests/helper_scripts/build_csharp_coreclr.sh
similarity index 97%
rename from tools/run_tests/build_csharp_coreclr.sh
rename to tools/run_tests/helper_scripts/build_csharp_coreclr.sh
index 02cf0d39cb53835d85e051731ff66896bac3005a..dd5fd31c759cd3317b16385b3e6190cf78f3e5e4 100755
--- a/tools/run_tests/build_csharp_coreclr.sh
+++ b/tools/run_tests/helper_scripts/build_csharp_coreclr.sh
@@ -30,7 +30,7 @@
 
 set -ex
 
-cd $(dirname $0)/../../src/csharp
+cd $(dirname $0)/../../../src/csharp
 
 # TODO(jtattermusch): introduce caching
 dotnet restore .
diff --git a/tools/run_tests/build_node.bat b/tools/run_tests/helper_scripts/build_node.bat
similarity index 100%
rename from tools/run_tests/build_node.bat
rename to tools/run_tests/helper_scripts/build_node.bat
diff --git a/tools/run_tests/build_node.sh b/tools/run_tests/helper_scripts/build_node.sh
similarity index 98%
rename from tools/run_tests/build_node.sh
rename to tools/run_tests/helper_scripts/build_node.sh
index d9292fd8aa2d61407e5a3e6ab47bbcfe34198447..8a928bb762cc3d07302d1d03df27a39c696f81b4 100755
--- a/tools/run_tests/build_node.sh
+++ b/tools/run_tests/helper_scripts/build_node.sh
@@ -38,6 +38,6 @@ set -ex
 CONFIG=${CONFIG:-opt}
 
 # change to grpc repo root
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 npm install --unsafe-perm --build-from-source
diff --git a/tools/run_tests/helper_scripts/build_node_electron.sh b/tools/run_tests/helper_scripts/build_node_electron.sh
new file mode 100755
index 0000000000000000000000000000000000000000..1c95c513b329c8dd384b5a82ff06d54fc0e746ad
--- /dev/null
+++ b/tools/run_tests/helper_scripts/build_node_electron.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ELECTRON_VERSION=$1
+source ~/.nvm/nvm.sh
+
+nvm use 6
+set -ex
+
+# change to grpc repo root
+cd $(dirname $0)/../..
+
+export npm_config_target=$ELECTRON_VERSION
+export npm_config_disturl=https://atom.io/download/atom-shell
+export npm_config_runtime=electron
+export npm_config_build_from_source=true
+mkdir -p ~/.electron-gyp
+HOME=~/.electron-gyp npm install --unsafe-perm
diff --git a/tools/run_tests/build_php.sh b/tools/run_tests/helper_scripts/build_php.sh
similarity index 98%
rename from tools/run_tests/build_php.sh
rename to tools/run_tests/helper_scripts/build_php.sh
index 77a8abcfe70fac742674860346f34757b3de6a00..acaaa23adf4a94de46870bd56522d3392b35fcea 100755
--- a/tools/run_tests/build_php.sh
+++ b/tools/run_tests/helper_scripts/build_php.sh
@@ -33,7 +33,7 @@ set -ex
 CONFIG=${CONFIG:-opt}
 
 # change to grpc repo root
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 root=`pwd`
 export GRPC_LIB_SUBDIR=libs/$CONFIG
diff --git a/tools/run_tests/build_python.sh b/tools/run_tests/helper_scripts/build_python.sh
similarity index 99%
rename from tools/run_tests/build_python.sh
rename to tools/run_tests/helper_scripts/build_python.sh
index 7cac39496086693e4dcdc876fd86199000c01931..0e88e9676585336b7ee0fcff954427535d6a00ce 100755
--- a/tools/run_tests/build_python.sh
+++ b/tools/run_tests/helper_scripts/build_python.sh
@@ -31,7 +31,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 ##########################
 # Portability operations #
diff --git a/tools/run_tests/build_python_msys2.sh b/tools/run_tests/helper_scripts/build_python_msys2.sh
similarity index 100%
rename from tools/run_tests/build_python_msys2.sh
rename to tools/run_tests/helper_scripts/build_python_msys2.sh
diff --git a/tools/run_tests/build_ruby.sh b/tools/run_tests/helper_scripts/build_ruby.sh
similarity index 98%
rename from tools/run_tests/build_ruby.sh
rename to tools/run_tests/helper_scripts/build_ruby.sh
index 10343fce6963f9223cf683c89c82f16349fa14ee..32638dede9677ddfd3435d2a600d85c5df36e653 100755
--- a/tools/run_tests/build_ruby.sh
+++ b/tools/run_tests/helper_scripts/build_ruby.sh
@@ -34,7 +34,7 @@ set -ex
 export GRPC_CONFIG=${CONFIG:-opt}
 
 # change to grpc's ruby directory
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 rm -rf ./tmp
 rake compile
diff --git a/tools/run_tests/post_tests_c.sh b/tools/run_tests/helper_scripts/post_tests_c.sh
similarity index 97%
rename from tools/run_tests/post_tests_c.sh
rename to tools/run_tests/helper_scripts/post_tests_c.sh
index 4409526dab256ef620af474e842d007077dad979..a83a59e23b7c59af4d899031f323e42593ece2d5 100755
--- a/tools/run_tests/post_tests_c.sh
+++ b/tools/run_tests/helper_scripts/post_tests_c.sh
@@ -32,7 +32,7 @@ set -ex
 
 if [ "$CONFIG" != "gcov" ] ; then exit ; fi
 
-root=$(readlink -f $(dirname $0)/../..)
+root=$(readlink -f $(dirname $0)/../../..)
 out=$root/reports/c_cxx_coverage
 tmp1=$(mktemp)
 tmp2=$(mktemp)
diff --git a/tools/run_tests/post_tests_csharp.bat b/tools/run_tests/helper_scripts/post_tests_csharp.bat
similarity index 98%
rename from tools/run_tests/post_tests_csharp.bat
rename to tools/run_tests/helper_scripts/post_tests_csharp.bat
index 0d49a00b2aa37bb2804edfa25d8230a94a26b283..2359f148ce835e77d1dee5cf1a0e5e179afed35d 100644
--- a/tools/run_tests/post_tests_csharp.bat
+++ b/tools/run_tests/helper_scripts/post_tests_csharp.bat
@@ -36,7 +36,7 @@ if not "%CONFIG%" == "gcov" (
 )
 
 @rem enter src/csharp directory
-cd /d %~dp0\..\..\src\csharp
+cd /d %~dp0\..\..\..\src\csharp
 
 @rem Generate code coverage report
 @rem TODO(jtattermusch): currently the report list is hardcoded
diff --git a/tools/run_tests/post_tests_csharp.sh b/tools/run_tests/helper_scripts/post_tests_csharp.sh
similarity index 98%
rename from tools/run_tests/post_tests_csharp.sh
rename to tools/run_tests/helper_scripts/post_tests_csharp.sh
index bb6f5c6e18822194561920fc24b02da2653f3956..762c1f882711f04b31a9043e39c0d995a766c69c 100755
--- a/tools/run_tests/post_tests_csharp.sh
+++ b/tools/run_tests/helper_scripts/post_tests_csharp.sh
@@ -33,7 +33,7 @@ set -ex
 if [ "$CONFIG" != "gcov" ] ; then exit ; fi
 
 # change to gRPC repo root
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 # Generate the csharp extension coverage report
 gcov objs/gcov/src/csharp/ext/*.o
diff --git a/tools/run_tests/post_tests_php.sh b/tools/run_tests/helper_scripts/post_tests_php.sh
similarity index 97%
rename from tools/run_tests/post_tests_php.sh
rename to tools/run_tests/helper_scripts/post_tests_php.sh
index b4098066ea9fa9f9a409b75ff783d1c565ea535a..23dc202322fdb4d2d8927b4893342fbeb9e04068 100755
--- a/tools/run_tests/post_tests_php.sh
+++ b/tools/run_tests/helper_scripts/post_tests_php.sh
@@ -32,7 +32,7 @@ set -ex
 
 if [ "$CONFIG" != "gcov" ] ; then exit ; fi
 
-root=$(readlink -f $(dirname $0)/../..)
+root=$(readlink -f $(dirname $0)/../../..)
 out=$root/reports/php_ext_coverage
 tmp1=$(mktemp)
 tmp2=$(mktemp)
diff --git a/tools/run_tests/post_tests_ruby.sh b/tools/run_tests/helper_scripts/post_tests_ruby.sh
similarity index 97%
rename from tools/run_tests/post_tests_ruby.sh
rename to tools/run_tests/helper_scripts/post_tests_ruby.sh
index 0877e44805abd879b5a2309d4d41b0690e77f592..300edfe8a3cd76424e69745f35e2c4fd918dc0f1 100755
--- a/tools/run_tests/post_tests_ruby.sh
+++ b/tools/run_tests/helper_scripts/post_tests_ruby.sh
@@ -32,7 +32,7 @@ set -ex
 
 if [ "$CONFIG" != "gcov" ] ; then exit ; fi
 
-root=$(readlink -f $(dirname $0)/../..)
+root=$(readlink -f $(dirname $0)/../../..)
 out=$root/reports/ruby_ext_coverage
 tmp1=$(mktemp)
 tmp2=$(mktemp)
diff --git a/tools/run_tests/pre_build_c.bat b/tools/run_tests/helper_scripts/pre_build_c.bat
similarity index 98%
rename from tools/run_tests/pre_build_c.bat
rename to tools/run_tests/helper_scripts/pre_build_c.bat
index e4ab69384c2a754bb4ff646be508e1a4a28c06c6..75b90f85b29ee8f490d96c01c51c4833d22769f5 100644
--- a/tools/run_tests/pre_build_c.bat
+++ b/tools/run_tests/helper_scripts/pre_build_c.bat
@@ -32,7 +32,7 @@
 setlocal
 
 @rem enter repo root
-cd /d %~dp0\..\..
+cd /d %~dp0\..\..\..
 
 @rem Location of nuget.exe
 set NUGET=C:\nuget\nuget.exe
diff --git a/tools/run_tests/pre_build_csharp.bat b/tools/run_tests/helper_scripts/pre_build_csharp.bat
similarity index 99%
rename from tools/run_tests/pre_build_csharp.bat
rename to tools/run_tests/helper_scripts/pre_build_csharp.bat
index f15979a96bef3eed6fc89a368a36dd7e011688fe..139955d4dae406eabca28e8c6881fdea00b0256a 100644
--- a/tools/run_tests/pre_build_csharp.bat
+++ b/tools/run_tests/helper_scripts/pre_build_csharp.bat
@@ -32,7 +32,7 @@
 setlocal
 
 @rem enter repo root
-cd /d %~dp0\..\..
+cd /d %~dp0\..\..\..
 
 @rem Location of nuget.exe
 set NUGET=C:\nuget\nuget.exe
diff --git a/tools/run_tests/pre_build_csharp.sh b/tools/run_tests/helper_scripts/pre_build_csharp.sh
similarity index 98%
rename from tools/run_tests/pre_build_csharp.sh
rename to tools/run_tests/helper_scripts/pre_build_csharp.sh
index ee678ddce5f5c6858443f73f493ab9e493b9d6c0..1f808556f48737d1f47dd928df6ff78fec6b6a31 100755
--- a/tools/run_tests/pre_build_csharp.sh
+++ b/tools/run_tests/helper_scripts/pre_build_csharp.sh
@@ -31,7 +31,7 @@
 set -ex
 
 # cd to gRPC csharp directory
-cd $(dirname $0)/../../src/csharp
+cd $(dirname $0)/../../../src/csharp
 
 root=`pwd`
 
diff --git a/tools/run_tests/pre_build_node.bat b/tools/run_tests/helper_scripts/pre_build_node.bat
similarity index 100%
rename from tools/run_tests/pre_build_node.bat
rename to tools/run_tests/helper_scripts/pre_build_node.bat
diff --git a/tools/run_tests/pre_build_node.sh b/tools/run_tests/helper_scripts/pre_build_node.sh
similarity index 100%
rename from tools/run_tests/pre_build_node.sh
rename to tools/run_tests/helper_scripts/pre_build_node.sh
diff --git a/tools/run_tests/helper_scripts/pre_build_node_electron.sh b/tools/run_tests/helper_scripts/pre_build_node_electron.sh
new file mode 100755
index 0000000000000000000000000000000000000000..95c56aa509446eec0b1feaf3b2d0e2055eebc154
--- /dev/null
+++ b/tools/run_tests/helper_scripts/pre_build_node_electron.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ELECTRON_VERSION=$1
+
+nvm install 6
+set -ex
+
+npm install xvfb-maybe
+
+npm install electron@$ELECTRON_VERSION
diff --git a/tools/run_tests/pre_build_ruby.sh b/tools/run_tests/helper_scripts/pre_build_ruby.sh
similarity index 98%
rename from tools/run_tests/pre_build_ruby.sh
rename to tools/run_tests/helper_scripts/pre_build_ruby.sh
index e7074c45c2dc492ef20e423e837ed0cd091f6d3c..56b58df5441bed4b4f7e919ffdce4e5326d59fb2 100755
--- a/tools/run_tests/pre_build_ruby.sh
+++ b/tools/run_tests/helper_scripts/pre_build_ruby.sh
@@ -34,6 +34,6 @@ set -ex
 export GRPC_CONFIG=${CONFIG:-opt}
 
 # change to grpc repo root
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 bundle install
diff --git a/tools/run_tests/run_lcov.sh b/tools/run_tests/helper_scripts/run_lcov.sh
similarity index 97%
rename from tools/run_tests/run_lcov.sh
rename to tools/run_tests/helper_scripts/run_lcov.sh
index 796a0b5ceb2fe1834a1a84fc847dc0825120ad77..bc7b44cd3e75bc260c689c922625bcf7c84f7eba 100755
--- a/tools/run_tests/run_lcov.sh
+++ b/tools/run_tests/helper_scripts/run_lcov.sh
@@ -32,7 +32,7 @@ set -ex
 
 out=$(readlink -f ${1:-coverage})
 
-root=$(readlink -f $(dirname $0)/../..)
+root=$(readlink -f $(dirname $0)/../../..)
 shift || true
 tmp=$(mktemp)
 cd $root
diff --git a/tools/run_tests/run_node.bat b/tools/run_tests/helper_scripts/run_node.bat
similarity index 100%
rename from tools/run_tests/run_node.bat
rename to tools/run_tests/helper_scripts/run_node.bat
diff --git a/tools/run_tests/run_node.sh b/tools/run_tests/helper_scripts/run_node.sh
similarity index 98%
rename from tools/run_tests/run_node.sh
rename to tools/run_tests/helper_scripts/run_node.sh
index 44f75645f5f21cf8e1df65f4df40ac47126358df..0fafe9481af75fcdce4da10ecc37377b78232864 100755
--- a/tools/run_tests/run_node.sh
+++ b/tools/run_tests/helper_scripts/run_node.sh
@@ -37,7 +37,7 @@ set -ex
 CONFIG=${CONFIG:-opt}
 
 # change to grpc repo root
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 root=`pwd`
 
diff --git a/tools/run_tests/helper_scripts/run_node_electron.sh b/tools/run_tests/helper_scripts/run_node_electron.sh
new file mode 100755
index 0000000000000000000000000000000000000000..1999ffb0fa8803b64376db44cf889b5c58606372
--- /dev/null
+++ b/tools/run_tests/helper_scripts/run_node_electron.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+source ~/.nvm/nvm.sh
+
+nvm use 6
+set -ex
+
+# change to grpc repo root
+cd $(dirname $0)/../..
+
+test_directory='src/node/test'
+timeout=8000
+
+JUNIT_REPORT_PATH=src/node/report.xml JUNIT_REPORT_STACK=1 \
+  ./node_modules/.bin/xvfb-maybe \
+  ./node_modules/.bin/electron-mocha --timeout $timeout \
+  --reporter mocha-jenkins-reporter $test_directory
diff --git a/tools/run_tests/run_python.sh b/tools/run_tests/helper_scripts/run_python.sh
similarity index 98%
rename from tools/run_tests/run_python.sh
rename to tools/run_tests/helper_scripts/run_python.sh
index 17e0186f2a86485d9f2a598b0cce3a05c795a3a5..7be473428fba587cc3be66b55b7c7ca0afb45bd0 100755
--- a/tools/run_tests/run_python.sh
+++ b/tools/run_tests/helper_scripts/run_python.sh
@@ -31,7 +31,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 PYTHON=`realpath -s "${1:-py27/bin/python}"`
 
diff --git a/tools/run_tests/run_ruby.sh b/tools/run_tests/helper_scripts/run_ruby.sh
similarity index 98%
rename from tools/run_tests/run_ruby.sh
rename to tools/run_tests/helper_scripts/run_ruby.sh
index 73a84ac361f4e11c7a1cc19d2527fa813a2f5cc9..ab153b7e25c46629c729c6d32abd57d97046eaf5 100755
--- a/tools/run_tests/run_ruby.sh
+++ b/tools/run_tests/helper_scripts/run_ruby.sh
@@ -31,6 +31,6 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 
 rake
diff --git a/tools/run_tests/run_tests_in_workspace.sh b/tools/run_tests/helper_scripts/run_tests_in_workspace.sh
similarity index 98%
rename from tools/run_tests/run_tests_in_workspace.sh
rename to tools/run_tests/helper_scripts/run_tests_in_workspace.sh
index 9c6c5b76e06ba5c23e13e1f3f0f9c5106bc62249..002c8d6de24cbdbc1449d6f695cbc148152e5619 100755
--- a/tools/run_tests/run_tests_in_workspace.sh
+++ b/tools/run_tests/helper_scripts/run_tests_in_workspace.sh
@@ -34,7 +34,7 @@
 # newly created workspace)
 set -ex
 
-cd $(dirname $0)/../..
+cd $(dirname $0)/../../..
 export repo_root=$(pwd)
 
 rm -rf "${WORKSPACE_NAME}"
diff --git a/tools/run_tests/interop_html_report.template b/tools/run_tests/interop/interop_html_report.template
similarity index 100%
rename from tools/run_tests/interop_html_report.template
rename to tools/run_tests/interop/interop_html_report.template
diff --git a/tools/run_tests/performance/bq_upload_result.py b/tools/run_tests/performance/bq_upload_result.py
index ddcf053ae5ec9a92aead775bc55a4c3332665faa..89d2a9b320fde3b83914593b5e025b1ca3be3a34 100755
--- a/tools/run_tests/performance/bq_upload_result.py
+++ b/tools/run_tests/performance/bq_upload_result.py
@@ -115,9 +115,11 @@ def _flatten_result_inplace(scenario_result):
   scenario_result['scenario']['clientConfig'] = json.dumps(scenario_result['scenario']['clientConfig'])
   scenario_result['scenario']['serverConfig'] = json.dumps(scenario_result['scenario']['serverConfig'])
   scenario_result['latencies'] = json.dumps(scenario_result['latencies'])
+  scenario_result['serverCpuStats'] = []
   for stats in scenario_result['serverStats']:
-    stats.pop('totalCpuTime', None)
-    stats.pop('idleCpuTime', None)
+    scenario_result['serverCpuStats'].append(dict())
+    scenario_result['serverCpuStats'][-1]['totalCpuTime'] = stats.pop('totalCpuTime', None)
+    scenario_result['serverCpuStats'][-1]['idleCpuTime'] = stats.pop('idleCpuTime', None)
   for stats in scenario_result['clientStats']:
     stats['latencies'] = json.dumps(stats['latencies'])
     stats.pop('requestResults', None)
@@ -125,7 +127,7 @@ def _flatten_result_inplace(scenario_result):
   scenario_result['clientSuccess'] = json.dumps(scenario_result['clientSuccess'])
   scenario_result['serverSuccess'] = json.dumps(scenario_result['serverSuccess'])
   scenario_result['requestResults'] = json.dumps(scenario_result.get('requestResults', []))
-  scenario_result['summary'].pop('serverCpuUsage', None)
+  scenario_result['serverCpuUsage'] = scenario_result['summary'].pop('serverCpuUsage', None)
   scenario_result['summary'].pop('successfulRequestsPerSecond', None)
   scenario_result['summary'].pop('failedRequestsPerSecond', None)
 
diff --git a/tools/run_tests/performance/scenario_config.py b/tools/run_tests/performance/scenario_config.py
index c3c5ece36283d3d6999a1ba6a1b9fdb44fda148d..b20bb40eb1b8b3cefce3856dedd6214fb420bf52 100644
--- a/tools/run_tests/performance/scenario_config.py
+++ b/tools/run_tests/performance/scenario_config.py
@@ -109,7 +109,6 @@ def _ping_pong_scenario(name, rpc_type,
                         unconstrained_client=None,
                         client_language=None,
                         server_language=None,
-                        server_core_limit=0,
                         async_server_threads=0,
                         warmup_seconds=WARMUP_SECONDS,
                         categories=DEFAULT_CATEGORIES,
@@ -136,7 +135,6 @@ def _ping_pong_scenario(name, rpc_type,
     'server_config': {
       'server_type': server_type,
       'security_params': _get_secargs(secure),
-      'core_limit': server_core_limit,
       'async_server_threads': async_server_threads,
     },
     'warmup_seconds': warmup_seconds,
@@ -200,7 +198,7 @@ class CXXLanguage:
           rpc_type='STREAMING',
           client_type='ASYNC_CLIENT',
           server_type='ASYNC_GENERIC_SERVER',
-          use_generic_payload=True, server_core_limit=1, async_server_threads=1,
+          use_generic_payload=True, async_server_threads=1,
           secure=secure,
           categories=smoketest_categories)
 
@@ -219,7 +217,7 @@ class CXXLanguage:
           client_type='ASYNC_CLIENT',
           server_type='ASYNC_GENERIC_SERVER',
           unconstrained_client='async', use_generic_payload=True,
-          server_core_limit=1, async_server_threads=1,
+          async_server_threads=1,
           secure=secure)
 
       yield _ping_pong_scenario(
@@ -248,7 +246,7 @@ class CXXLanguage:
               rpc_type=rpc_type.upper(),
               client_type='%s_CLIENT' % synchronicity.upper(),
               server_type='%s_SERVER' % synchronicity.upper(),
-              server_core_limit=1, async_server_threads=1,
+              async_server_threads=1,
               secure=secure)
 
           yield _ping_pong_scenario(
@@ -332,13 +330,13 @@ class CSharpLanguage:
     yield _ping_pong_scenario(
         'csharp_to_cpp_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
         client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
-        server_language='c++', server_core_limit=1, async_server_threads=1,
+        server_language='c++', async_server_threads=1,
         categories=[SMOKETEST, SCALABLE])
 
     yield _ping_pong_scenario(
         'csharp_to_cpp_protobuf_async_streaming_ping_pong', rpc_type='STREAMING',
         client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
-        server_language='c++', server_core_limit=1, async_server_threads=1)
+        server_language='c++', async_server_threads=1)
 
     yield _ping_pong_scenario(
         'csharp_to_cpp_protobuf_async_unary_qps_unconstrained', rpc_type='UNARY',
@@ -414,13 +412,13 @@ class NodeLanguage:
     #yield _ping_pong_scenario(
     #    'node_to_cpp_protobuf_async_unary_ping_pong', rpc_type='UNARY',
     #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
-    #    server_language='c++', server_core_limit=1, async_server_threads=1)
+    #    server_language='c++', async_server_threads=1)
 
     # TODO(jtattermusch): make this scenario work
     #yield _ping_pong_scenario(
     #    'node_to_cpp_protobuf_async_streaming_ping_pong', rpc_type='STREAMING',
     #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
-    #    server_language='c++', server_core_limit=1, async_server_threads=1)
+    #    server_language='c++', async_server_threads=1)
 
   def __str__(self):
     return 'node'
@@ -469,13 +467,13 @@ class PythonLanguage:
     yield _ping_pong_scenario(
         'python_to_cpp_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
         client_type='SYNC_CLIENT', server_type='ASYNC_SERVER',
-        server_language='c++', server_core_limit=1, async_server_threads=1,
+        server_language='c++', async_server_threads=1,
         categories=[SMOKETEST, SCALABLE])
 
     yield _ping_pong_scenario(
         'python_to_cpp_protobuf_sync_streaming_ping_pong', rpc_type='STREAMING',
         client_type='SYNC_CLIENT', server_type='ASYNC_SERVER',
-        server_language='c++', server_core_limit=1, async_server_threads=1)
+        server_language='c++', async_server_threads=1)
 
   def __str__(self):
     return 'python'
@@ -516,12 +514,12 @@ class RubyLanguage:
     yield _ping_pong_scenario(
         'ruby_to_cpp_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
         client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
-        server_language='c++', server_core_limit=1, async_server_threads=1)
+        server_language='c++', async_server_threads=1)
 
     yield _ping_pong_scenario(
         'ruby_to_cpp_protobuf_sync_streaming_ping_pong', rpc_type='STREAMING',
         client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
-        server_language='c++', server_core_limit=1, async_server_threads=1)
+        server_language='c++', async_server_threads=1)
 
   def __str__(self):
     return 'ruby'
diff --git a/tools/run_tests/performance/scenario_result_schema.json b/tools/run_tests/performance/scenario_result_schema.json
index 3285f212d7752380a218aa549571ec37a6ec77e2..8ec41c377c500cb4c19d166f81f6167693eeacd1 100644
--- a/tools/run_tests/performance/scenario_result_schema.json
+++ b/tools/run_tests/performance/scenario_result_schema.json
@@ -213,5 +213,27 @@
     "name": "requestResults",
     "type": "STRING",
     "mode": "NULLABLE"
+  },
+  {
+    "name": "serverCpuStats",
+    "type": "RECORD",
+    "mode": "REPEATED",
+    "fields": [
+      {
+        "name": "totalCpuTime",
+        "type": "INTEGER",
+        "mode": "NULLABLE"
+      },
+      {
+        "name": "idleCpuTime",
+        "type": "INTEGER",
+        "mode": "NULLABLE"
+      }
+    ]
+  },
+  {
+    "name": "serverCpuUsage",
+    "type": "FLOAT",
+    "mode": "NULLABLE"
   }
 ]
diff --git a/tools/run_tests/python_utils/__init__.py b/tools/run_tests/python_utils/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..100a624dc9c1bbd89708c58e18cf2666a73f4cc7
--- /dev/null
+++ b/tools/run_tests/python_utils/__init__.py
@@ -0,0 +1,28 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/tools/run_tests/antagonist.py b/tools/run_tests/python_utils/antagonist.py
similarity index 100%
rename from tools/run_tests/antagonist.py
rename to tools/run_tests/python_utils/antagonist.py
diff --git a/tools/run_tests/dockerjob.py b/tools/run_tests/python_utils/dockerjob.py
similarity index 99%
rename from tools/run_tests/dockerjob.py
rename to tools/run_tests/python_utils/dockerjob.py
index 4a7e61b3c4e3be785803b675d5658b04935f8f2d..0869c5cee9bf932c3502168e737ab249f711f103 100755
--- a/tools/run_tests/dockerjob.py
+++ b/tools/run_tests/python_utils/dockerjob.py
@@ -31,13 +31,14 @@
 
 from __future__ import print_function
 
-import jobset
 import tempfile
 import time
 import uuid
 import os
 import subprocess
 
+import jobset
+
 _DEVNULL = open(os.devnull, 'w')
 
 
diff --git a/tools/run_tests/filter_pull_request_tests.py b/tools/run_tests/python_utils/filter_pull_request_tests.py
similarity index 100%
rename from tools/run_tests/filter_pull_request_tests.py
rename to tools/run_tests/python_utils/filter_pull_request_tests.py
diff --git a/tools/run_tests/jobset.py b/tools/run_tests/python_utils/jobset.py
similarity index 93%
rename from tools/run_tests/jobset.py
rename to tools/run_tests/python_utils/jobset.py
index 1b5d6d66a09f0357d71cc306d48e110d326fdca9..7b2c62d1a2b12233a9c7f8352b2b0346ee34e515 100755
--- a/tools/run_tests/jobset.py
+++ b/tools/run_tests/python_utils/jobset.py
@@ -219,7 +219,8 @@ class JobResult(object):
 class Job(object):
   """Manages one job."""
 
-  def __init__(self, spec, newline_on_success, travis, add_env):
+  def __init__(self, spec, newline_on_success, travis, add_env,
+               quiet_success=False):
     self._spec = spec
     self._newline_on_success = newline_on_success
     self._travis = travis
@@ -227,7 +228,9 @@ class Job(object):
     self._retries = 0
     self._timeout_retries = 0
     self._suppress_failure_message = False
-    message('START', spec.shortname, do_newline=self._travis)
+    self._quiet_success = quiet_success
+    if not self._quiet_success:
+      message('START', spec.shortname, do_newline=self._travis)
     self.result = JobResult()
     self.start()
 
@@ -302,10 +305,11 @@ class Job(object):
           if real > 0.5:
             cores = (user + sys) / real
             measurement = '; cpu_cost=%.01f; estimated=%.01f' % (cores, self._spec.cpu_cost)
-        message('PASSED', '%s [time=%.1fsec; retries=%d:%d%s]' % (
-            self._spec.shortname, elapsed, self._retries, self._timeout_retries, measurement),
-            stdout() if self._spec.verbose_success else None,
-            do_newline=self._newline_on_success or self._travis)
+        if not self._quiet_success:
+          message('PASSED', '%s [time=%.1fsec; retries=%d:%d%s]' % (
+              self._spec.shortname, elapsed, self._retries, self._timeout_retries, measurement),
+              stdout() if self._spec.verbose_success else None,
+              do_newline=self._newline_on_success or self._travis)
         self.result.state = 'PASSED'
     elif (self._state == _RUNNING and
           self._spec.timeout_seconds is not None and
@@ -341,7 +345,7 @@ class Jobset(object):
   """Manages one run of jobs."""
 
   def __init__(self, check_cancelled, maxjobs, newline_on_success, travis,
-               stop_on_failure, add_env):
+               stop_on_failure, add_env, quiet_success):
     self._running = set()
     self._check_cancelled = check_cancelled
     self._cancelled = False
@@ -352,6 +356,7 @@ class Jobset(object):
     self._travis = travis
     self._stop_on_failure = stop_on_failure
     self._add_env = add_env
+    self._quiet_success = quiet_success
     self.resultset = {}
     self._remaining = None
     self._start_time = time.time()
@@ -380,7 +385,8 @@ class Jobset(object):
     job = Job(spec,
               self._newline_on_success,
               self._travis,
-              self._add_env)
+              self._add_env,
+              self._quiet_success)
     self._running.add(job)
     if job.GetSpec().shortname not in self.resultset:
       self.resultset[job.GetSpec().shortname] = []
@@ -403,7 +409,8 @@ class Jobset(object):
         break
       for job in dead:
         self._completed += 1
-        self.resultset[job.GetSpec().shortname].append(job.result)
+        if not self._quiet_success or job.result.state != 'PASSED':
+          self.resultset[job.GetSpec().shortname].append(job.result)
         self._running.remove(job)
       if dead: return
       if not self._travis and platform_string() != 'windows':
@@ -463,7 +470,8 @@ def run(cmdlines,
         infinite_runs=False,
         stop_on_failure=False,
         add_env={},
-        skip_jobs=False):
+        skip_jobs=False,
+        quiet_success=False):
   if skip_jobs:
     results = {}
     skipped_job_result = JobResult()
@@ -474,7 +482,8 @@ def run(cmdlines,
     return results
   js = Jobset(check_cancelled,
               maxjobs if maxjobs is not None else _DEFAULT_MAX_JOBS,
-              newline_on_success, travis, stop_on_failure, add_env)
+              newline_on_success, travis, stop_on_failure, add_env,
+              quiet_success)
   for cmdline, remaining in tag_remaining(cmdlines):
     if not js.start(cmdline):
       break
diff --git a/tools/run_tests/port_server.py b/tools/run_tests/python_utils/port_server.py
similarity index 100%
rename from tools/run_tests/port_server.py
rename to tools/run_tests/python_utils/port_server.py
diff --git a/tools/run_tests/report_utils.py b/tools/run_tests/python_utils/report_utils.py
similarity index 98%
rename from tools/run_tests/report_utils.py
rename to tools/run_tests/python_utils/report_utils.py
index 5ce2a87cfaf8098e395c88abe3d4fc8af121c028..352cf7abe76b260c3020aa62db5dc04208bd2e68 100644
--- a/tools/run_tests/report_utils.py
+++ b/tools/run_tests/python_utils/report_utils.py
@@ -84,7 +84,7 @@ def render_interop_html_report(
   client_langs, server_langs, test_cases, auth_test_cases, http2_cases,
   resultset, num_failures, cloud_to_prod, prod_servers, http2_interop):
   """Generate HTML report for interop tests."""
-  template_file = 'tools/run_tests/interop_html_report.template'
+  template_file = 'tools/run_tests/interop/interop_html_report.template'
   try:
     mytemplate = Template(filename=template_file, format_exceptions=True)
   except NameError:
diff --git a/tools/run_tests/watch_dirs.py b/tools/run_tests/python_utils/watch_dirs.py
similarity index 100%
rename from tools/run_tests/watch_dirs.py
rename to tools/run_tests/python_utils/watch_dirs.py
diff --git a/tools/run_tests/run_interop_tests.py b/tools/run_tests/run_interop_tests.py
index 83cfc429f98ade556908df6d724b96ac997f7106..b2dac7d1a871c67efe0b91eef3006dd0e0729511 100755
--- a/tools/run_tests/run_interop_tests.py
+++ b/tools/run_tests/run_interop_tests.py
@@ -34,20 +34,21 @@ from __future__ import print_function
 
 import argparse
 import atexit
-import dockerjob
 import itertools
-import jobset
 import json
 import multiprocessing
 import os
 import re
-import report_utils
 import subprocess
 import sys
 import tempfile
 import time
 import uuid
 
+import python_utils.dockerjob as dockerjob
+import python_utils.jobset as jobset
+import python_utils.report_utils as report_utils
+
 # Docker doesn't clean up after itself, so we do it on exit.
 atexit.register(lambda: subprocess.call(['stty', 'echo']))
 
@@ -85,7 +86,7 @@ class CXXLanguage:
     return {}
 
   def server_cmd(self, args):
-    return ['bins/opt/interop_server', '--use_tls=true'] + args
+    return ['bins/opt/interop_server'] + args
 
   def global_env(self):
     return {}
@@ -114,7 +115,7 @@ class CSharpLanguage:
     return {}
 
   def server_cmd(self, args):
-    return ['mono', 'Grpc.IntegrationTesting.Server.exe', '--use_tls=true'] + args
+    return ['mono', 'Grpc.IntegrationTesting.Server.exe'] + args
 
   def global_env(self):
     return {}
@@ -143,7 +144,7 @@ class CSharpCoreCLRLanguage:
     return {}
 
   def server_cmd(self, args):
-    return ['dotnet', 'exec', 'Grpc.IntegrationTesting.Server.dll', '--use_tls=true'] + args
+    return ['dotnet', 'exec', 'Grpc.IntegrationTesting.Server.dll'] + args
 
   def global_env(self):
     return {}
@@ -168,20 +169,23 @@ class JavaLanguage:
   def client_cmd(self, args):
     return ['./run-test-client.sh'] + args
 
+  def client_cmd_http2interop(self, args):
+    return ['./run-http2-client.sh'] + args
+
   def cloud_to_prod_env(self):
     return {}
 
   def server_cmd(self, args):
-    return ['./run-test-server.sh', '--use_tls=true'] + args
+    return ['./run-test-server.sh'] + args
 
   def global_env(self):
     return {}
 
   def unimplemented_test_cases(self):
-    return _SKIP_ADVANCED + _SKIP_COMPRESSION
+    return _SKIP_COMPRESSION
 
   def unimplemented_test_cases_server(self):
-    return _SKIP_ADVANCED + _SKIP_COMPRESSION
+    return _SKIP_COMPRESSION
 
   def __str__(self):
     return 'java'
@@ -202,7 +206,7 @@ class GoLanguage:
     return {}
 
   def server_cmd(self, args):
-    return ['go', 'run', 'server.go', '--use_tls=true'] + args
+    return ['go', 'run', 'server.go'] + args
 
   def global_env(self):
     return {}
@@ -216,6 +220,33 @@ class GoLanguage:
   def __str__(self):
     return 'go'
 
+class Http2Server:
+  """Represents the HTTP/2 Interop Test server
+
+  This pretends to be a language in order to be built and run, but really it
+  isn't.
+  """
+  def __init__(self):
+    self.server_cwd = None
+    self.safename = str(self)
+
+  def server_cmd(self, args):
+    return ['python test/http2_test/http2_test_server.py']
+
+  def cloud_to_prod_env(self):
+    return {}
+
+  def global_env(self):
+    return {}
+
+  def unimplemented_test_cases(self):
+    return _TEST_CASES
+
+  def unimplemented_test_cases_server(self):
+    return _TEST_CASES
+
+  def __str__(self):
+    return 'http2'
 
 class Http2Client:
   """Represents the HTTP/2 Interop Test
@@ -261,8 +292,7 @@ class NodeLanguage:
 
   def server_cmd(self, args):
     return ['tools/run_tests/interop/with_nvm.sh',
-            'node', 'src/node/interop/interop_server.js',
-            '--use_tls=true'] + args
+            'node', 'src/node/interop/interop_server.js'] + args
 
   def global_env(self):
     return {}
@@ -343,16 +373,16 @@ class RubyLanguage:
 
   def server_cmd(self, args):
     return ['tools/run_tests/interop/with_rvm.sh',
-            'ruby', 'src/ruby/pb/test/server.rb', '--use_tls=true'] + args
+            'ruby', 'src/ruby/pb/test/server.rb'] + args
 
   def global_env(self):
     return {}
 
   def unimplemented_test_cases(self):
-    return _SKIP_ADVANCED + _SKIP_SERVER_COMPRESSION
+    return _SKIP_SERVER_COMPRESSION
 
   def unimplemented_test_cases_server(self):
-    return _SKIP_ADVANCED + _SKIP_COMPRESSION
+    return _SKIP_COMPRESSION
 
   def __str__(self):
     return 'ruby'
@@ -374,6 +404,11 @@ class PythonLanguage:
         '--args="{}"'.format(' '.join(args))
     ]
 
+  def client_cmd_http2interop(self, args):
+    return [ 'py27/bin/python',
+              'src/python/grpcio_tests/tests/http2/_negative_http2_client.py',
+           ] + args
+
   def cloud_to_prod_env(self):
     return {}
 
@@ -383,7 +418,7 @@ class PythonLanguage:
         'src/python/grpcio_tests/setup.py',
         'run_interop',
         '--server',
-        '--args="{}"'.format(' '.join(args) + ' --use_tls=true')
+        '--args="{}"'.format(' '.join(args))
     ]
 
   def global_env(self):
@@ -428,7 +463,10 @@ _TEST_CASES = ['large_unary', 'empty_unary', 'ping_pong',
 _AUTH_TEST_CASES = ['compute_engine_creds', 'jwt_token_creds',
                     'oauth2_auth_token', 'per_rpc_creds']
 
-_HTTP2_TEST_CASES = ["tls", "framing"]
+_HTTP2_TEST_CASES = ['tls', 'framing']
+
+_HTTP2_BADSERVER_TEST_CASES = ['rst_after_header', 'rst_after_data', 'rst_during_data',
+                     'goaway', 'ping', 'max_streams']
 
 DOCKER_WORKDIR_ROOT = '/var/local/git/grpc'
 
@@ -547,15 +585,27 @@ def cloud_to_prod_jobspec(language, test_case, server_host_name,
 
 
 def cloud_to_cloud_jobspec(language, test_case, server_name, server_host,
-                           server_port, docker_image=None):
+                           server_port, docker_image=None, insecure=False):
   """Creates jobspec for cloud-to-cloud interop test"""
-  cmdline = bash_cmdline(language.client_cmd([
+  interop_only_options = [
       '--server_host_override=foo.test.google.fr',
-      '--use_tls=true',
+      '--use_tls=%s' % ('false' if insecure else 'true'),
       '--use_test_ca=true',
+  ]
+  common_options = [
       '--test_case=%s' % test_case,
       '--server_host=%s' % server_host,
-      '--server_port=%s' % server_port]))
+  ]
+  if test_case in _HTTP2_BADSERVER_TEST_CASES:
+    # We are running the http2_badserver_interop test. Adjust command line accordingly.
+    offset = sorted(_HTTP2_BADSERVER_TEST_CASES).index(test_case)
+    client_options = common_options + ['--server_port=%s' %
+                                       (int(server_port)+offset)]
+    cmdline = bash_cmdline(language.client_cmd_http2interop(client_options))
+  else:
+    client_options = interop_only_options + common_options + ['--server_port=%s' % server_port]
+    cmdline = bash_cmdline(language.client_cmd(client_options))
+
   cwd = language.client_cwd
   environ = language.global_env()
   if docker_image:
@@ -583,19 +633,37 @@ def cloud_to_cloud_jobspec(language, test_case, server_name, server_host,
   return test_job
 
 
-def server_jobspec(language, docker_image):
+def server_jobspec(language, docker_image, insecure=False):
   """Create jobspec for running a server"""
   container_name = dockerjob.random_name('interop_server_%s' % language.safename)
   cmdline = bash_cmdline(
-      language.server_cmd(['--port=%s' % _DEFAULT_SERVER_PORT]))
+      language.server_cmd(['--port=%s' % _DEFAULT_SERVER_PORT,
+                           '--use_tls=%s' % ('false' if insecure else 'true')]))
   environ = language.global_env()
+  if language.safename == 'http2':
+    # we are running the http2 interop server. Open next N ports beginning
+    # with the server port. These ports are used for http2 interop test
+    # (one test case per port). We also attach the docker container running
+    # the server to local network, so we don't have to mess with port mapping
+    port_args = [
+      '-p', str(_DEFAULT_SERVER_PORT+0),
+      '-p', str(_DEFAULT_SERVER_PORT+1),
+      '-p', str(_DEFAULT_SERVER_PORT+2),
+      '-p', str(_DEFAULT_SERVER_PORT+3),
+      '-p', str(_DEFAULT_SERVER_PORT+4),
+      '-p', str(_DEFAULT_SERVER_PORT+5),
+      '-p', str(_DEFAULT_SERVER_PORT+6),
+      '--net=host',
+    ]
+  else:
+    port_args = ['-p', str(_DEFAULT_SERVER_PORT)]
+
   docker_cmdline = docker_run_cmdline(cmdline,
                                       image=docker_image,
                                       cwd=language.server_cwd,
                                       environ=environ,
-                                      docker_args=['-p', str(_DEFAULT_SERVER_PORT),
-                                                   '--name', container_name])
-
+                                      docker_args=port_args +
+                                        ['--name', container_name])
   server_job = jobset.JobSpec(
           cmdline=docker_cmdline,
           environ=environ,
@@ -729,7 +797,17 @@ argp.add_argument('--http2_interop',
                   default=False,
                   action='store_const',
                   const=True,
-                  help='Enable HTTP/2 interop tests')
+                  help='Enable HTTP/2 client edge case testing. (Bad client, good server)')
+argp.add_argument('--http2_badserver_interop',
+                  default=False,
+                  action='store_const',
+                  const=True,
+                  help='Enable HTTP/2 server edge case testing. (Good client, bad server)')
+argp.add_argument('--insecure',
+                  default=False,
+                  action='store_const',
+                  const=True,
+                  help='Whether to use secure channel.')
 
 args = argp.parse_args()
 
@@ -756,6 +834,7 @@ languages = set(_LANGUAGES[l]
                       for x in args.language))
 
 http2Interop = Http2Client() if args.http2_interop else None
+http2InteropServer = Http2Server() if args.http2_badserver_interop else None
 
 docker_images={}
 if args.use_docker:
@@ -765,6 +844,9 @@ if args.use_docker:
   if args.http2_interop:
     languages_to_build.add(http2Interop)
 
+  if args.http2_badserver_interop:
+    languages_to_build.add(http2InteropServer)
+
   build_jobs = []
   for l in languages_to_build:
     job = build_interop_image_jobspec(l)
@@ -791,13 +873,24 @@ server_addresses={}
 try:
   for s in servers:
     lang = str(s)
-    spec = server_jobspec(_LANGUAGES[lang], docker_images.get(lang))
+    spec = server_jobspec(_LANGUAGES[lang], docker_images.get(lang),
+                          args.insecure)
     job = dockerjob.DockerJob(spec)
     server_jobs[lang] = job
     server_addresses[lang] = ('localhost', job.mapped_port(_DEFAULT_SERVER_PORT))
 
+  if args.http2_badserver_interop:
+    # launch a HTTP2 server emulator that creates edge cases
+    lang = str(http2InteropServer)
+    spec = server_jobspec(http2InteropServer, docker_images.get(lang))
+    job = dockerjob.DockerJob(spec)
+    server_jobs[lang] = job
+    server_addresses[lang] = ('localhost', _DEFAULT_SERVER_PORT)
+
   jobs = []
   if args.cloud_to_prod:
+    if args.insecure:
+      print('TLS is always enabled for cloud_to_prod scenarios.')
     for server_host_name in args.prod_servers:
       for language in languages:
         for test_case in _TEST_CASES:
@@ -818,6 +911,8 @@ try:
           jobs.append(test_job)
 
   if args.cloud_to_prod_auth:
+    if args.insecure:
+      print('TLS is always enabled for cloud_to_prod scenarios.')
     for server_host_name in args.prod_servers:
       for language in languages:
         for test_case in _AUTH_TEST_CASES:
@@ -839,17 +934,19 @@ try:
     skip_server = []  # test cases unimplemented by server
     if server_language:
       skip_server = server_language.unimplemented_test_cases_server()
-    for language in languages:
-      for test_case in _TEST_CASES:
-        if not test_case in language.unimplemented_test_cases():
-          if not test_case in skip_server:
-            test_job = cloud_to_cloud_jobspec(language,
-                                              test_case,
-                                              server_name,
-                                              server_host,
-                                              server_port,
-                                              docker_image=docker_images.get(str(language)))
-            jobs.append(test_job)
+    if not args.http2_badserver_interop:
+      for language in languages:
+        for test_case in _TEST_CASES:
+          if not test_case in language.unimplemented_test_cases():
+            if not test_case in skip_server:
+              test_job = cloud_to_cloud_jobspec(language,
+                                                test_case,
+                                                server_name,
+                                                server_host,
+                                                server_port,
+                                                docker_image=docker_images.get(str(language)),
+                                                insecure=args.insecure)
+              jobs.append(test_job)
 
     if args.http2_interop:
       for test_case in _HTTP2_TEST_CASES:
@@ -861,9 +958,21 @@ try:
                                           server_name,
                                           server_host,
                                           server_port,
-                                          docker_image=docker_images.get(str(http2Interop)))
+                                          docker_image=docker_images.get(str(http2Interop)),
+                                          insecure=args.insecure)
         jobs.append(test_job)
 
+    if args.http2_badserver_interop:
+      for language in languages:
+        for test_case in _HTTP2_BADSERVER_TEST_CASES:
+          test_job = cloud_to_cloud_jobspec(language,
+                                            test_case,
+                                            server_name,
+                                            server_host,
+                                            server_port,
+                                            docker_image=docker_images.get(str(language)))
+          jobs.append(test_job)
+
   if not jobs:
     print('No jobs to run.')
     for image in docker_images.itervalues():
diff --git a/tools/run_tests/run_performance_tests.py b/tools/run_tests/run_performance_tests.py
index 69ccff85cf5190174541d5fba56b695107f7ad04..12b5e01508d01111132ca17fa37aa871a5de60da 100755
--- a/tools/run_tests/run_performance_tests.py
+++ b/tools/run_tests/run_performance_tests.py
@@ -35,21 +35,21 @@ from __future__ import print_function
 import argparse
 import collections
 import itertools
-import jobset
 import json
 import multiprocessing
 import os
-import performance.scenario_config as scenario_config
 import pipes
 import re
-import report_utils
 import subprocess
 import sys
 import tempfile
 import time
 import traceback
 import uuid
-import report_utils
+
+import performance.scenario_config as scenario_config
+import python_utils.jobset as jobset
+import python_utils.report_utils as report_utils
 
 
 _ROOT = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
@@ -58,8 +58,6 @@ os.chdir(_ROOT)
 
 _REMOTE_HOST_USERNAME = 'jenkins'
 
-_PERF_REPORT_OUTPUT_DIR = 'perf_reports'
-
 
 class QpsWorkerJob:
   """Encapsulates a qps worker server job."""
@@ -113,7 +111,7 @@ def create_qpsworker_job(language, shortname=None, port=10000, remote_host=None,
 
 
 def create_scenario_jobspec(scenario_json, workers, remote_host=None,
-                            bq_result_table=None):
+                            bq_result_table=None, server_cpu_load=0):
   """Runs one scenario using QPS driver."""
   # setting QPS_WORKERS env variable here makes sure it works with SSH too.
   cmd = 'QPS_WORKERS="%s" ' % ','.join(workers)
@@ -121,7 +119,9 @@ def create_scenario_jobspec(scenario_json, workers, remote_host=None,
     cmd += 'BQ_RESULT_TABLE="%s" ' % bq_result_table
   cmd += 'tools/run_tests/performance/run_qps_driver.sh '
   cmd += '--scenarios_json=%s ' % pipes.quote(json.dumps({'scenarios': [scenario_json]}))
-  cmd += '--scenario_result_file=scenario_result.json'
+  cmd += '--scenario_result_file=scenario_result.json '
+  if server_cpu_load != 0:
+      cmd += '--search_param=offered_load --initial_search_value=1000 --targeted_cpu_load=%d --stride=500 --error_tolerance=0.01' % server_cpu_load
   if remote_host:
     user_at_host = '%s@%s' % (_REMOTE_HOST_USERNAME, remote_host)
     cmd = 'ssh %s "cd ~/performance_workspace/grpc/ && "%s' % (user_at_host, pipes.quote(cmd))
@@ -129,7 +129,7 @@ def create_scenario_jobspec(scenario_json, workers, remote_host=None,
   return jobset.JobSpec(
       cmdline=[cmd],
       shortname='qps_json_driver.%s' % scenario_json['name'],
-      timeout_seconds=3*60,
+      timeout_seconds=12*60,
       shell=True,
       verbose_success=True)
 
@@ -300,11 +300,11 @@ def perf_report_processor_job(worker_host, perf_base_name, output_filename):
     user_at_host = "%s@%s" % (_REMOTE_HOST_USERNAME, worker_host)
     cmd = "USER_AT_HOST=%s OUTPUT_FILENAME=%s OUTPUT_DIR=%s PERF_BASE_NAME=%s\
          tools/run_tests/performance/process_remote_perf_flamegraphs.sh" \
-          % (user_at_host, output_filename, _PERF_REPORT_OUTPUT_DIR, perf_base_name)
+          % (user_at_host, output_filename, args.flame_graph_reports, perf_base_name)
   else:
     cmd = "OUTPUT_FILENAME=%s OUTPUT_DIR=%s PERF_BASE_NAME=%s\
           tools/run_tests/performance/process_local_perf_flamegraphs.sh" \
-          % (output_filename, _PERF_REPORT_OUTPUT_DIR, perf_base_name)
+          % (output_filename, args.flame_graph_reports, perf_base_name)
 
   return jobset.JobSpec(cmdline=cmd,
                         timeout_seconds=3*60,
@@ -318,7 +318,7 @@ Scenario = collections.namedtuple('Scenario', 'jobspec workers name')
 
 def create_scenarios(languages, workers_by_lang, remote_host=None, regex='.*',
                      category='all', bq_result_table=None,
-                     netperf=False, netperf_hosts=[]):
+                     netperf=False, netperf_hosts=[], server_cpu_load=0):
   """Create jobspecs for scenarios to run."""
   all_workers = [worker
                  for workers in workers_by_lang.values()
@@ -379,7 +379,8 @@ def create_scenarios(languages, workers_by_lang, remote_host=None, regex='.*',
               create_scenario_jobspec(scenario_json,
                                       [w.host_and_port for w in workers],
                                       remote_host=remote_host,
-                                      bq_result_table=bq_result_table),
+                                      bq_result_table=bq_result_table,
+                                      server_cpu_load=server_cpu_load),
               workers,
               scenario_json['name'])
           scenarios.append(scenario)
@@ -461,6 +462,9 @@ argp.add_argument('--netperf',
                   action='store_const',
                   const=True,
                   help='Run netperf benchmark as one of the scenarios.')
+argp.add_argument('--server_cpu_load',
+                  default=0, type=int,
+                  help='Select a targeted server cpu load to run. 0 means ignore this flag')
 argp.add_argument('-x', '--xml_report', default='report.xml', type=str,
                   help='Name of XML report file to generate.')
 argp.add_argument('--perf_args',
@@ -469,7 +473,7 @@ argp.add_argument('--perf_args',
                         'with the arguments to perf specified here. '
                         '".svg" flame graph profiles will be '
                         'created for each Qps Worker on each scenario. '
-                        'Files will output to "<repo_root>/perf_reports" '
+                        'Files will output to "<repo_root>/<args.flame_graph_reports>" '
                         'directory. Output files from running the worker '
                         'under perf are saved in the repo root where its ran. '
                         'Note that the perf "-g" flag is necessary for '
@@ -489,7 +493,8 @@ argp.add_argument('--skip_generate_flamegraphs',
                   help=('Turn flame graph generation off. '
                         'May be useful if "perf_args" arguments do not make sense for '
                         'generating flamegraphs (e.g., "--perf_args=stat ...")'))
-
+argp.add_argument('-f', '--flame_graph_reports', default='perf_reports', type=str,
+                  help='Name of directory to output flame graph profiles to, if any are created.')
 
 args = argp.parse_args()
 
@@ -522,8 +527,9 @@ if not args.dry_run:
 
 perf_cmd = None
 if args.perf_args:
+  print('Running workers under perf profiler')
   # Expect /usr/bin/perf to be installed here, as is usual
-  perf_cmd = ['/usr/bin/perf'] 
+  perf_cmd = ['/usr/bin/perf']
   perf_cmd.extend(re.split('\s+', args.perf_args))
 
 qpsworker_jobs = create_qpsworkers(languages, args.remote_worker_host, perf_cmd=perf_cmd)
@@ -540,7 +546,8 @@ scenarios = create_scenarios(languages,
                            category=args.category,
                            bq_result_table=args.bq_result_table,
                            netperf=args.netperf,
-                           netperf_hosts=args.remote_worker_host)
+                           netperf_hosts=args.remote_worker_host,
+                           server_cpu_load=args.server_cpu_load)
 
 if not scenarios:
   raise Exception('No scenarios to run')
@@ -582,7 +589,7 @@ for scenario in scenarios:
 # 'profile_output_files' will only have names for scenarios that passed
 if perf_cmd and not args.skip_generate_flamegraphs:
   # write the index fil to the output dir, with all profiles from all scenarios/workers
-  report_utils.render_perf_profiling_results('%s/index.html' % _PERF_REPORT_OUTPUT_DIR, profile_output_files)
+  report_utils.render_perf_profiling_results('%s/index.html' % args.flame_graph_reports, profile_output_files)
 
 if total_scenario_failures > 0 or qps_workers_killed > 0:
   print('%s scenarios failed and %s qps worker jobs killed' % (total_scenario_failures, qps_workers_killed))
diff --git a/tools/run_tests/run_stress_tests.py b/tools/run_tests/run_stress_tests.py
index de4a22877ca52327bb9df04761cefeaae957812d..a94a615b8863aea920bb943acaed1b77972766a1 100755
--- a/tools/run_tests/run_stress_tests.py
+++ b/tools/run_tests/run_stress_tests.py
@@ -33,9 +33,7 @@ from __future__ import print_function
 
 import argparse
 import atexit
-import dockerjob
 import itertools
-import jobset
 import json
 import multiprocessing
 import os
@@ -46,6 +44,9 @@ import tempfile
 import time
 import uuid
 
+import python_utils.dockerjob as dockerjob
+import python_utils.jobset as jobset
+
 # Docker doesn't clean up after itself, so we do it on exit.
 atexit.register(lambda: subprocess.call(['stty', 'echo']))
 
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index c49ee4a6cc65fd98d96d2a6a776dd06daad2eb2c..5aae3432e16e064accfd8de0af8ce36600b5e0b3 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -54,9 +54,9 @@ import time
 from six.moves import urllib
 import uuid
 
-import jobset
-import report_utils
-import watch_dirs
+import python_utils.jobset as jobset
+import python_utils.report_utils as report_utils
+import python_utils.watch_dirs as watch_dirs
 
 
 _ROOT = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
@@ -116,7 +116,7 @@ class Config(object):
 def get_c_tests(travis, test_lang) :
   out = []
   platforms_str = 'ci_platforms' if travis else 'platforms'
-  with open('tools/run_tests/tests.json') as f:
+  with open('tools/run_tests/generated/tests.json') as f:
     js = json.load(f)
     return [tgt
             for tgt in js
@@ -300,7 +300,7 @@ class CLanguage(object):
 
   def pre_build_steps(self):
     if self.platform == 'windows':
-      return [['tools\\run_tests\\pre_build_c.bat']]
+      return [['tools\\run_tests\\helper_scripts\\pre_build_c.bat']]
     else:
       return []
 
@@ -311,7 +311,7 @@ class CLanguage(object):
     if self.platform == 'windows':
       return []
     else:
-      return [['tools/run_tests/post_tests_c.sh']]
+      return [['tools/run_tests/helper_scripts/post_tests_c.sh']]
 
   def makefile_name(self):
     return 'Makefile'
@@ -371,28 +371,43 @@ class NodeLanguage(object):
   def configure(self, config, args):
     self.config = config
     self.args = args
+    # Note: electron ABI only depends on major and minor version, so that's all
+    # we should specify in the compiler argument
     _check_compiler(self.args.compiler, ['default', 'node0.12',
                                          'node4', 'node5', 'node6',
-                                         'node7'])
+                                         'node7', 'electron1.3'])
     if self.args.compiler == 'default':
+      self.runtime = 'node'
       self.node_version = '4'
     else:
-      # Take off the word "node"
-      self.node_version = self.args.compiler[4:]
+      if self.args.compiler.startswith('electron'):
+        self.runtime = 'electron'
+        self.node_version = self.args.compiler[8:]
+      else:
+        self.runtime = 'node'
+        # Take off the word "node"
+        self.node_version = self.args.compiler[4:]
 
   def test_specs(self):
     if self.platform == 'windows':
-      return [self.config.job_spec(['tools\\run_tests\\run_node.bat'], None)]
+      return [self.config.job_spec(['tools\\run_tests\\helper_scripts\\run_node.bat'])]
     else:
-      return [self.config.job_spec(['tools/run_tests/run_node.sh', self.node_version],
+      run_script = 'run_node'
+      if self.runtime == 'electron':
+        run_script += '_electron'
+      return [self.config.job_spec(['tools/run_tests/helper_scripts/{}.sh'.format(run_script),
+                                    self.node_version],
                                    None,
                                    environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
 
   def pre_build_steps(self):
     if self.platform == 'windows':
-      return [['tools\\run_tests\\pre_build_node.bat']]
+      return [['tools\\run_tests\\helper_scripts\\pre_build_node.bat']]
     else:
-      return [['tools/run_tests/pre_build_node.sh', self.node_version]]
+      build_script = 'pre_build_node'
+      if self.runtime == 'electron':
+        build_script += '_electron'
+      return [['tools/run_tests/helper_scripts/{}.sh'.format(build_script), self.node_version]]
 
   def make_targets(self):
     return []
@@ -402,9 +417,14 @@ class NodeLanguage(object):
 
   def build_steps(self):
     if self.platform == 'windows':
-      return [['tools\\run_tests\\build_node.bat']]
+      return [['tools\\run_tests\\helper_scripts\\build_node.bat']]
     else:
-      return [['tools/run_tests/build_node.sh', self.node_version]]
+      build_script = 'build_node'
+      if self.runtime == 'electron':
+        build_script += '_electron'
+        # building for electron requires a patch version
+        self.node_version += '.0'
+      return [['tools/run_tests/helper_scripts/{}.sh'.format(build_script), self.node_version]]
 
   def post_tests_steps(self):
     return []
@@ -427,7 +447,7 @@ class PhpLanguage(object):
     _check_compiler(self.args.compiler, ['default'])
 
   def test_specs(self):
-    return [self.config.job_spec(['src/php/bin/run_tests.sh'], None,
+    return [self.config.job_spec(['src/php/bin/run_tests.sh'],
                                   environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
 
   def pre_build_steps(self):
@@ -440,10 +460,10 @@ class PhpLanguage(object):
     return []
 
   def build_steps(self):
-    return [['tools/run_tests/build_php.sh']]
+    return [['tools/run_tests/helper_scripts/build_php.sh']]
 
   def post_tests_steps(self):
-    return [['tools/run_tests/post_tests_php.sh']]
+    return [['tools/run_tests/helper_scripts/post_tests_php.sh']]
 
   def makefile_name(self):
     return 'Makefile'
@@ -463,7 +483,7 @@ class Php7Language(object):
     _check_compiler(self.args.compiler, ['default'])
 
   def test_specs(self):
-    return [self.config.job_spec(['src/php/bin/run_tests.sh'], None,
+    return [self.config.job_spec(['src/php/bin/run_tests.sh'],
                                   environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
 
   def pre_build_steps(self):
@@ -476,10 +496,10 @@ class Php7Language(object):
     return []
 
   def build_steps(self):
-    return [['tools/run_tests/build_php.sh']]
+    return [['tools/run_tests/helper_scripts/build_php.sh']]
 
   def post_tests_steps(self):
-    return [['tools/run_tests/post_tests_php.sh']]
+    return [['tools/run_tests/helper_scripts/post_tests_php.sh']]
 
   def makefile_name(self):
     return 'Makefile'
@@ -548,18 +568,18 @@ class PythonLanguage(object):
 
     if os.name == 'nt':
       shell = ['bash']
-      builder = [os.path.abspath('tools/run_tests/build_python_msys2.sh')]
+      builder = [os.path.abspath('tools/run_tests/helper_scripts/build_python_msys2.sh')]
       builder_prefix_arguments = ['MINGW{}'.format(bits)]
       venv_relative_python = ['Scripts/python.exe']
       toolchain = ['mingw32']
     else:
       shell = []
-      builder = [os.path.abspath('tools/run_tests/build_python.sh')]
+      builder = [os.path.abspath('tools/run_tests/helper_scripts/build_python.sh')]
       builder_prefix_arguments = []
       venv_relative_python = ['bin/python']
       toolchain = ['unix']
 
-    runner = [os.path.abspath('tools/run_tests/run_python.sh')]
+    runner = [os.path.abspath('tools/run_tests/helper_scripts/run_python.sh')]
     config_vars = _PythonConfigVars(shell, builder, builder_prefix_arguments,
                               venv_relative_python, toolchain, runner)
     python27_config = _python_config_generator(name='py27', major='2',
@@ -611,12 +631,12 @@ class RubyLanguage(object):
     _check_compiler(self.args.compiler, ['default'])
 
   def test_specs(self):
-    return [self.config.job_spec(['tools/run_tests/run_ruby.sh'],
+    return [self.config.job_spec(['tools/run_tests/helper_scripts/run_ruby.sh'],
                                  timeout_seconds=10*60,
                                  environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
 
   def pre_build_steps(self):
-    return [['tools/run_tests/pre_build_ruby.sh']]
+    return [['tools/run_tests/helper_scripts/pre_build_ruby.sh']]
 
   def make_targets(self):
     return []
@@ -625,10 +645,10 @@ class RubyLanguage(object):
     return []
 
   def build_steps(self):
-    return [['tools/run_tests/build_ruby.sh']]
+    return [['tools/run_tests/helper_scripts/build_ruby.sh']]
 
   def post_tests_steps(self):
-    return [['tools/run_tests/post_tests_ruby.sh']]
+    return [['tools/run_tests/helper_scripts/post_tests_ruby.sh']]
 
   def makefile_name(self):
     return 'Makefile'
@@ -702,7 +722,6 @@ class CSharpLanguage(object):
         for test in tests_by_assembly[assembly]:
           cmdline = runtime_cmd + [assembly_file, '--test=%s' % test] + nunit_args
           specs.append(self.config.job_spec(cmdline,
-                                            None,
                                             shortname='csharp.%s' % test,
                                             environ=_FORCE_ENVIRON_FOR_WRAPPERS))
       else:
@@ -720,7 +739,6 @@ class CSharpLanguage(object):
         # to prevent problems with registering the profiler.
         run_exclusive = 1000000
         specs.append(self.config.job_spec(cmdline,
-                                          None,
                                           shortname='csharp.coverage.%s' % assembly,
                                           cpu_cost=run_exclusive,
                                           environ=_FORCE_ENVIRON_FOR_WRAPPERS))
@@ -728,9 +746,9 @@ class CSharpLanguage(object):
 
   def pre_build_steps(self):
     if self.platform == 'windows':
-      return [['tools\\run_tests\\pre_build_csharp.bat']]
+      return [['tools\\run_tests\\helper_scripts\\pre_build_csharp.bat']]
     else:
-      return [['tools/run_tests/pre_build_csharp.sh']]
+      return [['tools/run_tests/helper_scripts/pre_build_csharp.sh']]
 
   def make_targets(self):
     return ['grpc_csharp_ext']
@@ -741,22 +759,22 @@ class CSharpLanguage(object):
   def build_steps(self):
     if self.args.compiler == 'coreclr':
       if self.platform == 'windows':
-        return [['tools\\run_tests\\build_csharp_coreclr.bat']]
+        return [['tools\\run_tests\\helper_scripts\\build_csharp_coreclr.bat']]
       else:
-        return [['tools/run_tests/build_csharp_coreclr.sh']]
+        return [['tools/run_tests/helper_scripts/build_csharp_coreclr.sh']]
     else:
       if self.platform == 'windows':
         return [[_windows_build_bat(self.args.compiler),
                  'src/csharp/Grpc.sln',
                  '/p:Configuration=%s' % _MSBUILD_CONFIG[self.config.build_config]]]
       else:
-        return [['tools/run_tests/build_csharp.sh']]
+        return [['tools/run_tests/helper_scripts/build_csharp.sh']]
 
   def post_tests_steps(self):
     if self.platform == 'windows':
-      return [['tools\\run_tests\\post_tests_csharp.bat']]
+      return [['tools\\run_tests\\helper_scripts\\post_tests_csharp.bat']]
     else:
-      return [['tools/run_tests/post_tests_csharp.sh']]
+      return [['tools/run_tests/helper_scripts/post_tests_csharp.sh']]
 
   def makefile_name(self):
     return 'Makefile'
@@ -779,7 +797,7 @@ class ObjCLanguage(object):
   def test_specs(self):
     return [
         self.config.job_spec(['src/objective-c/tests/run_tests.sh'],
-                              timeout_seconds=None,
+                              timeout_seconds=60*60,
                               shortname='objc-tests',
                               environ=_FORCE_ENVIRON_FOR_WRAPPERS),
         self.config.job_spec(['src/objective-c/tests/build_example_test.sh'],
@@ -823,8 +841,12 @@ class Sanity(object):
   def test_specs(self):
     import yaml
     with open('tools/run_tests/sanity/sanity_tests.yaml', 'r') as f:
+      environ={'TEST': 'true'}
+      if _is_use_docker_child():
+        environ['CLANG_FORMAT_SKIP_DOCKER'] = 'true'
       return [self.config.job_spec(cmd['script'].split(),
-                                   timeout_seconds=None, environ={'TEST': 'true'},
+                                   timeout_seconds=30*60,
+                                   environ=environ,
                                    cpu_cost=cmd.get('cpu_cost', 1))
               for cmd in yaml.load(f)]
 
@@ -875,9 +897,9 @@ class NodeExpressLanguage(object):
 
   def pre_build_steps(self):
     if self.platform == 'windows':
-      return [['tools\\run_tests\\pre_build_node.bat']]
+      return [['tools\\run_tests\\helper_scripts\\pre_build_node.bat']]
     else:
-      return [['tools/run_tests/pre_build_node.sh', self.node_version]]
+      return [['tools/run_tests/helper_scripts/pre_build_node.sh', self.node_version]]
 
   def make_targets(self):
     return []
@@ -901,7 +923,7 @@ class NodeExpressLanguage(object):
     return 'node_express'
 
 # different configurations we can run under
-with open('tools/run_tests/configs.json') as f:
+with open('tools/run_tests/generated/configs.json') as f:
   _CONFIGS = dict((cfg['config'], Config(**cfg)) for cfg in ast.literal_eval(f.read()))
 
 
@@ -1075,6 +1097,7 @@ argp.add_argument('--compiler',
                            'vs2010', 'vs2013', 'vs2015',
                            'python2.7', 'python3.4', 'python3.5', 'python3.6', 'pypy', 'pypy3',
                            'node0.12', 'node4', 'node5', 'node6', 'node7',
+                           'electron1.3',
                            'coreclr'],
                   default='default',
                   help='Selects compiler to use. Allowed values depend on the platform and language.')
@@ -1097,6 +1120,12 @@ argp.add_argument('-x', '--xml_report', default=None, type=str,
         help='Generates a JUnit-compatible XML report')
 argp.add_argument('--report_suite_name', default='tests', type=str,
         help='Test suite name to use in generated JUnit XML report')
+argp.add_argument('--quiet_success',
+                  default=False,
+                  action='store_const',
+                  const=True,
+                  help='Dont print anything when a test passes. Passing tests also will not be reported in XML report. ' +
+                       'Useful when running many iterations of each test (argument -n).')
 argp.add_argument('--force_default_poller', default=False, action='store_const', const=True,
                   help='Dont try to iterate over many polling strategies when they exist')
 args = argp.parse_args()
@@ -1296,7 +1325,7 @@ def _start_port_server(port_server_port):
     running = False
   if running:
     current_version = int(subprocess.check_output(
-        [sys.executable, os.path.abspath('tools/run_tests/port_server.py'),
+        [sys.executable, os.path.abspath('tools/run_tests/python_utils/port_server.py'),
          'dump_version']))
     print('my port server is version %d' % current_version)
     running = (version >= current_version)
@@ -1308,7 +1337,7 @@ def _start_port_server(port_server_port):
     fd, logfile = tempfile.mkstemp()
     os.close(fd)
     print('starting port_server, with log file %s' % logfile)
-    args = [sys.executable, os.path.abspath('tools/run_tests/port_server.py'),
+    args = [sys.executable, os.path.abspath('tools/run_tests/python_utils/port_server.py'),
             '-p', '%d' % port_server_port, '-l', logfile]
     env = dict(os.environ)
     env['BUILD_ID'] = 'pleaseDontKillMeJenkins'
@@ -1414,7 +1443,7 @@ def _build_and_run(
     return []
 
   # start antagonists
-  antagonists = [subprocess.Popen(['tools/run_tests/antagonist.py'])
+  antagonists = [subprocess.Popen(['tools/run_tests/python_utils/antagonist.py'])
                  for _ in range(0, args.antagonists)]
   port_server_port = 32766
   _start_port_server(port_server_port)
@@ -1444,20 +1473,24 @@ def _build_and_run(
                      else itertools.repeat(massaged_one_run, runs_per_test))
     all_runs = itertools.chain.from_iterable(runs_sequence)
 
+    if args.quiet_success:
+      jobset.message('START', 'Running tests quietly, only failing tests will be reported', do_newline=True)
     num_test_failures, resultset = jobset.run(
         all_runs, check_cancelled, newline_on_success=newline_on_success,
         travis=args.travis, infinite_runs=infinite_runs, maxjobs=args.jobs,
         stop_on_failure=args.stop_on_failure,
-        add_env={'GRPC_TEST_PORT_SERVER': 'localhost:%d' % port_server_port})
+        add_env={'GRPC_TEST_PORT_SERVER': 'localhost:%d' % port_server_port},
+        quiet_success=args.quiet_success)
     if resultset:
       for k, v in sorted(resultset.items()):
         num_runs, num_failures = _calculate_num_runs_failures(v)
-        if num_failures == num_runs:  # what about infinite_runs???
-          jobset.message('FAILED', k, do_newline=True)
-        elif num_failures > 0:
-          jobset.message(
-              'FLAKE', '%s [%d/%d runs flaked]' % (k, num_failures, num_runs),
-              do_newline=True)
+        if num_failures > 0:
+          if num_failures == num_runs:  # what about infinite_runs???
+            jobset.message('FAILED', k, do_newline=True)
+          else:
+            jobset.message(
+                'FLAKE', '%s [%d/%d runs flaked]' % (k, num_failures, num_runs),
+                do_newline=True)
   finally:
     for antagonist in antagonists:
       antagonist.kill()
diff --git a/tools/run_tests/run_tests_matrix.py b/tools/run_tests/run_tests_matrix.py
index 989bc7eb218c1169eba5ad4b2769d6d32e08915b..8f70a6d2ea9ba049a7f7c6327a88bc1fbf77ee18 100755
--- a/tools/run_tests/run_tests_matrix.py
+++ b/tools/run_tests/run_tests_matrix.py
@@ -31,12 +31,13 @@
 """Run test matrix."""
 
 import argparse
-import jobset
 import multiprocessing
 import os
-import report_utils
 import sys
-from filter_pull_request_tests import filter_tests
+
+import python_utils.jobset as jobset
+import python_utils.report_utils as report_utils
+from python_utils.filter_pull_request_tests import filter_tests
 
 _ROOT = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
 os.chdir(_ROOT)
@@ -69,7 +70,7 @@ def _workspace_jobspec(name, runtests_args=[], workspace_name=None, inner_jobs=_
     workspace_name = 'workspace_%s' % name
   env = {'WORKSPACE_NAME': workspace_name}
   test_job = jobset.JobSpec(
-          cmdline=['tools/run_tests/run_tests_in_workspace.sh',
+          cmdline=['tools/run_tests/helper_scripts/run_tests_in_workspace.sh',
                    '-t',
                    '-j', str(inner_jobs),
                    '-x', '../report_%s.xml' % name,
@@ -230,6 +231,15 @@ def _create_portability_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS)
                               labels=['portability'],
                               extra_args=extra_args,
                               inner_jobs=inner_jobs)
+
+  test_jobs += _generate_jobs(languages=['node'],
+                              configs=['dbg'],
+                              platforms=['linux'],
+                              arch='default',
+                              compiler='electron1.3',
+                              labels=['portability'],
+                              extra_args=extra_args,
+                              inner_jobs=inner_jobs)
   return test_jobs
 
 
@@ -242,6 +252,17 @@ def _allowed_labels():
   return sorted(all_labels)
 
 
+def _runs_per_test_type(arg_str):
+  """Auxiliary function to parse the "runs_per_test" flag."""
+  try:
+    n = int(arg_str)
+    if n <= 0: raise ValueError
+    return n
+  except:
+    msg = '\'{}\' is not a positive integer'.format(arg_str)
+    raise argparse.ArgumentTypeError(msg)
+
+
 if __name__ == "__main__":
   argp = argparse.ArgumentParser(description='Run a matrix of run_tests.py tests.')
   argp.add_argument('-j', '--jobs',
@@ -253,6 +274,11 @@ if __name__ == "__main__":
                     nargs='+',
                     default=[],
                     help='Filter targets to run by label with AND semantics.')
+  argp.add_argument('--exclude',
+                    choices=_allowed_labels(),
+                    nargs='+',
+                    default=[],
+                    help='Exclude targets with any of given labels.')
   argp.add_argument('--build_only',
                     default=False,
                     action='store_const',
@@ -269,7 +295,7 @@ if __name__ == "__main__":
                     default=False,
                     action='store_const',
                     const=True,
-                    help='Filters out tests irrelavant to pull request changes.')
+                    help='Filters out tests irrelevant to pull request changes.')
   argp.add_argument('--base_branch',
                     default='origin/master',
                     type=str,
@@ -278,6 +304,9 @@ if __name__ == "__main__":
                     default=_DEFAULT_INNER_JOBS,
                     type=int,
                     help='Number of jobs in each run_tests.py instance')
+  argp.add_argument('-n', '--runs_per_test', default=1, type=_runs_per_test_type,
+                    help='How many times to run each tests. >1 runs implies ' +
+                    'omitting passing test from the output & reports.')
   args = argp.parse_args()
 
   extra_args = []
@@ -285,6 +314,10 @@ if __name__ == "__main__":
     extra_args.append('--build_only')
   if args.force_default_poller:
     extra_args.append('--force_default_poller')
+  if args.runs_per_test > 1:
+    extra_args.append('-n')
+    extra_args.append('%s' % args.runs_per_test)
+    extra_args.append('--quiet_success')
 
   all_jobs = _create_test_jobs(extra_args=extra_args, inner_jobs=args.inner_jobs) + \
              _create_portability_test_jobs(extra_args=extra_args, inner_jobs=args.inner_jobs)
@@ -292,7 +325,8 @@ if __name__ == "__main__":
   jobs = []
   for job in all_jobs:
     if not args.filter or all(filter in job.labels for filter in args.filter):
-      jobs.append(job)
+      if not any(exclude_label in job.labels for exclude_label in args.exclude):
+        jobs.append(job)
 
   if not jobs:
     jobset.message('FAILED', 'No test suites match given criteria.',
diff --git a/tools/run_tests/sanity/check_sources_and_headers.py b/tools/run_tests/sanity/check_sources_and_headers.py
index b733ba173f179bf6787a4ec100a063a04c6b32ab..a86db02b80bf7841a952c78538b3e4dba05d0f1f 100755
--- a/tools/run_tests/sanity/check_sources_and_headers.py
+++ b/tools/run_tests/sanity/check_sources_and_headers.py
@@ -34,7 +34,7 @@ import re
 import sys
 
 root = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../../..'))
-with open(os.path.join(root, 'tools', 'run_tests', 'sources_and_headers.json')) as f:
+with open(os.path.join(root, 'tools', 'run_tests', 'generated', 'sources_and_headers.json')) as f:
   js = json.loads(f.read())
 
 re_inc1 = re.compile(r'^#\s*include\s*"([^"]*)"')
diff --git a/tools/run_tests/sanity/check_submodules.sh b/tools/run_tests/sanity/check_submodules.sh
index be12f968d2b21fe9c321b2235381824f25950baa..a484b26716e7b9f5bce0b5ae1e5d0a6209e9b342 100755
--- a/tools/run_tests/sanity/check_submodules.sh
+++ b/tools/run_tests/sanity/check_submodules.sh
@@ -41,13 +41,14 @@ want_submodules=`mktemp /tmp/submXXXXXX`
 
 git submodule | awk '{ print $1 }' | sort > $submodules
 cat << EOF | awk '{ print $1 }' | sort > $want_submodules
- c880e42ba1c8032d4cdde2aba0541d8a9d9fa2e9 third_party/boringssl (version_for_cocoapods_2.0-100-gc880e42)
- 05b155ff59114735ec8cd089f669c4c3d8f59029 third_party/gflags (v2.1.0-45-g05b155f)
  44c25c892a6229b20db7cd9dc05584ea865896de third_party/benchmark (v0.1.0-343-g44c25c8)
+ c880e42ba1c8032d4cdde2aba0541d8a9d9fa2e9 third_party/boringssl (c880e42)
+ 886e7d75368e3f4fab3f4d0d3584e4abfc557755 third_party/boringssl-with-bazel (version_for_cocoapods_7.0-857-g886e7d7)
+ f8a0efe03aa69b3336d8e228b37d4ccb17324b88 third_party/gflags (v2.2.0)
  c99458533a9b4c743ed51537e25989ea55944908 third_party/googletest (release-1.7.0)
- a428e42072765993ff674fda72863c9f1aa2d268 third_party/protobuf (v3.1.0)
+ a428e42072765993ff674fda72863c9f1aa2d268 third_party/protobuf (v3.1.0-alpha-1)
+ bcad91771b7f0bff28a1cac1981d7ef2b9bcef3c third_party/thrift (bcad917)
  50893291621658f355bc5b4d450a8d06a563053d third_party/zlib (v1.2.8)
- bcad91771b7f0bff28a1cac1981d7ef2b9bcef3c third_party/thrift
 EOF
 
 diff -u $submodules $want_submodules
diff --git a/tools/run_tests/sanity/check_test_filtering.py b/tools/run_tests/sanity/check_test_filtering.py
index b522cdeb49a697a26cc56f2eabc9e44cc3611b9c..290a6e2ddf604bb63cd951489358bda72f516ab9 100755
--- a/tools/run_tests/sanity/check_test_filtering.py
+++ b/tools/run_tests/sanity/check_test_filtering.py
@@ -38,7 +38,7 @@ import re
 # hack import paths to pick up extra code
 sys.path.insert(0, os.path.abspath('tools/run_tests/'))
 from run_tests_matrix import _create_test_jobs, _create_portability_test_jobs
-import filter_pull_request_tests
+import python_utils.filter_pull_request_tests as filter_pull_request_tests
 
 _LIST_OF_LANGUAGE_LABELS = ['c', 'c++', 'csharp', 'node', 'objc', 'php', 'php7', 'python', 'ruby']
 _LIST_OF_PLATFORM_LABELS = ['linux', 'macos', 'windows']
diff --git a/tools/run_tests/sanity/core_banned_functions.py b/tools/run_tests/sanity/core_banned_functions.py
new file mode 100755
index 0000000000000000000000000000000000000000..afac10bf80e72b4a26f5e7ca9d2bd829b07c23c1
--- /dev/null
+++ b/tools/run_tests/sanity/core_banned_functions.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python2.7
+
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import os
+import sys
+
+os.chdir(os.path.join(os.path.dirname(sys.argv[0]), '../../..'))
+
+# map of banned function signature to whitelist
+BANNED_EXCEPT = {
+    'grpc_resource_quota_ref(': ['src/core/lib/iomgr/resource_quota.c'],
+    'grpc_resource_quota_unref(': ['src/core/lib/iomgr/resource_quota.c'],
+    'grpc_slice_buffer_destroy(': ['src/core/lib/slice/slice_buffer.c'],
+    'grpc_slice_buffer_reset_and_unref(': ['src/core/lib/slice/slice_buffer.c'],
+    'grpc_slice_ref(': ['src/core/lib/slice/slice.c'],
+    'grpc_slice_unref(': ['src/core/lib/slice/slice.c'],
+}
+
+errors = 0
+for root, dirs, files in os.walk('src/core'):
+  for filename in files:
+    path = os.path.join(root, filename)
+    if os.path.splitext(path)[1] != '.c': continue
+    with open(path) as f:
+      text = f.read()
+    for banned, exceptions in BANNED_EXCEPT.items():
+      if path in exceptions: continue
+      if banned in text:
+        print 'Illegal use of "%s" in %s' % (banned, path)
+        errors += 1
+
+assert errors == 0
diff --git a/tools/run_tests/sanity/sanity_tests.yaml b/tools/run_tests/sanity/sanity_tests.yaml
index 32e62dd5292aa3b309249af4c5a6a9e2ea004812..f29b700572bb474ab9c29751920caa16739cb3dc 100644
--- a/tools/run_tests/sanity/sanity_tests.yaml
+++ b/tools/run_tests/sanity/sanity_tests.yaml
@@ -3,6 +3,7 @@
 - script: tools/run_tests/sanity/check_sources_and_headers.py
 - script: tools/run_tests/sanity/check_submodules.sh
 - script: tools/run_tests/sanity/check_test_filtering.py
+- script: tools/run_tests/sanity/core_banned_functions.py
 - script: tools/buildgen/generate_projects.sh -j 3
   cpu_cost: 3
 - script: tools/distrib/check_copyright.py
@@ -11,4 +12,6 @@
 - script: tools/distrib/check_trailing_newlines.sh
 - script: tools/distrib/check_nanopb_output.sh
 - script: tools/distrib/check_include_guards.py
+- script: tools/distrib/pyformat_code.sh
 - script: tools/distrib/python/check_grpcio_tools.py
+
diff --git a/tools/run_tests/task_runner.py b/tools/run_tests/task_runner.py
index 2e3fa443b960075f16139b485796957c23bd7568..fdc46682223fed735454c3bb585bc8e0550b2f5d 100755
--- a/tools/run_tests/task_runner.py
+++ b/tools/run_tests/task_runner.py
@@ -33,14 +33,13 @@
 from __future__ import print_function
 
 import argparse
-import atexit
-import jobset
 import multiprocessing
 import sys
 
-import artifact_targets
-import distribtest_targets
-import package_targets
+import artifacts.artifact_targets as artifact_targets
+import artifacts.distribtest_targets as distribtest_targets
+import artifacts.package_targets as package_targets
+import python_utils.jobset as jobset
 
 _TARGETS = []
 _TARGETS += artifact_targets.targets()
diff --git a/vsprojects/README.md b/vsprojects/README.md
index 7af69c2726bf557eeaf727f271df7225540a2024..f1663d254850707d657863b4d5a8d1bddb2f93a1 100644
--- a/vsprojects/README.md
+++ b/vsprojects/README.md
@@ -1,8 +1,8 @@
-This directory contains MS Visual Studio project & solution files.
+#Pre-generated MS Visual Studio project & solution files
 
-#Supported Visual Studio versions
-
-Currently supported versions are Visual Studio 2013 (our primary focus) and 2010.
+Versions 2013 and 2015 are both supported. You can use [their respective
+community
+editions](https://www.visualstudio.com/en-us/downloads/download-visual-studio-vs.aspx).
 
 #Building
 We are using [NuGet](http://www.nuget.org) to pull zlib and openssl dependencies.
@@ -16,8 +16,8 @@ download nuget.exe from the web and manually restore the NuGet packages.
 ```
 
 After that, you can build the solution using one of these options:
-1. open `grpc.sln` with Visual Studio and hit "Build".
-2. build from commandline using `msbuild grpc.sln /p:Configuration=Debug`
+  1. open `grpc.sln` with Visual Studio and hit "Build".
+  2. build from commandline using `msbuild grpc.sln /p:Configuration=Debug`
 
 #C/C++ Test Dependencies
    * gtest isn't available as a git repo like the other dependencies.  download it and add it to `/third_party/gtest/` (the folder will end up with `/build-aux/`, `/cmake/`, `/codegear/`, etc. folders in it).  
@@ -36,73 +36,18 @@ After that, you can build the solution using one of these options:
    * install [NuGet](http://www.nuget.org)
     * nuget should automatically bring in built versions of zlib and openssl when building grpc.sln (the versions in `/third_party/` are not used).  If it doesn't work use `tools->nuget...->manage...`.  The packages are put in `/vsprojects/packages/`
 
-#C/C++ Test Solution/Project Build Steps
-   * A basic git version of grpc only has templates for non-test items.  This checklist adds test items to grpc.sln and makes individual vs projects for them
-   * set up dependencies (above)
-   * add `"debug": true,` to the top of build.json.  This is the base file for all build tracking, see [templates](https://github.com/grpc/grpc/tree/master/templates) for more information
-    * `"debug": true,` gets picked up by `/tools/buildgen/plugins/generate_vsprojects.py`.  It tells the script to add visual studio GUIDs to all projects.  Otherwise only the projects that already have GUIDs in build.json will be built
-   * run `/templates/vsprojects/generate_debug_projects.sh` to make debug templates/projects.  This runs a regular visual studio buildgen process, which creates the `.sln` file with all of the new debug projects, then uses git diff to find the new project names from the `.sln` that need templates added.  It builds the new templates based on the diff, then re-runs the visual studio buildgen, which builds the vs projects for each of the new debug targets
-    * copy over the `/vsprojects/` folder to your windows build setup (assuming this was built on linux in order to have easy access to python/mako and shell scripts)
-   * run `/templates/vsprojects/build_test_protos.sh`
-    * this builds all `.proto` files in `/test/` in-place.  there might be a better place to put them that mirrors what happens in the linux build process (todo)
-    * each `.proto` file gets built into a `.grpc.pb.cc`, .`grpc.pb.h`, `.pb.cc`, and `.pb.h`.  These are included in each test project in lieu of the `.proto` includes specified in `build.json`.  This substitution is done by `/templates/vsprojects/vcxproj_defs.include`
-    * copy over the `/test/` folder in order to get the new files (assuming this was built on linux in order to have an easy protobuf+grpc plugin installation)
-
-#Making and running tests with `/tools/run_tests/run_tests.py` or `/vsprojects/make.bat`
-`run_tests.py` and `make.bat` both rely on `/vsprojects/grpc.mak`, an NMAKE script that includes C/C++ tests in addition to the base grpc projects.  It builds the base projects by calling grpc.sln, but most things are built with a command line similar to a makefile workflow.
-
- arguments for `/vsprojects/make.bat`:
-
- * no options or `all` or `buildtests`: builds all tests
- * `buildtests_c`: just c tests
- * `buildtests_cxx`: just c++ tests
- * names of individual tests: just those tests (example: `make.bat gpr_string_test`)
-
-using `run_tests.py` on windows:
-
- * when `run_tests.py` detects that it's running on windows it calls `make.bat` to build the tests and expects to find tests in `/vsprojects/test_bins/`
-
-`run_tests.py` options:
-
- * `run_tests.py --help`
- * `run_tests.py -l c`: run c language tests
- * `run_tests.py -l c++`: run c++ language tests
- * note: `run_tests.py` doesn't normally show build steps, so if a build fails it is best to fall back to `make.bat`
- * if `make.bat` fails, it might be easier to open up the `.sln` file in the visual studio gui (see above for how to build the test projects) and build the offending test from its project file.  The `.mak` and project file templates are slightly different, so it's possible that a project will build one way and not another.  Please report this if it happens.
-
-It can be helpful to disable the firewall when running tests so that 400 connection warnings don't pop up.
-
-Individual tests can be run by directly running the executable in `/vsprojects/run_tests/` (this is `/bins/opt/` on linux).  Many C tests have no output; they either pass or fail internally and communicate this with their exit code (`0=pass`, `nonzero=fail`)
-
-`run_tests.py` will fail if it can't build something, so not-building tests are disabled with a "platforms = posix" note in build.json.  The buildgen tools will not add a test to a windows build unless it is marked "windows" or has no platforms identified.  As tests are ported they will get this mark removed.
-
 # Building protoc plugins
 For generating service stub code, gRPC relies on plugins for `protoc` (the protocol buffer compiler). The solution `grpc_protoc_plugins.sln` allows you to build
 Windows .exe binaries of gRPC protoc plugins.
 
-1. Follow instructions in `third_party\protobuf\cmake\README.md` to create Visual Studio 2013 projects for protobuf.
-```
-$ cd third_party/protobuf/cmake
-$ mkdir build & cd build
-$ mkdir solution & cd solution
-$ cmake -G "Visual Studio 12 2013" -Dprotobuf_BUILD_TESTS=OFF ../..
-```
-
-2. Open solution `third_party\protobuf\cmake\build\solution\protobuf.sln` and build it in Release mode. That will build libraries `libprotobuf.lib` and `libprotoc.lib` needed for the next step.
+- Follow instructions in `third_party\protobuf\cmake\README.md` to create Visual Studio 2013 projects for protobuf.
+  ```
+  $ cd third_party/protobuf/cmake
+  $ mkdir build & cd build
+  $ mkdir solution & cd solution
+  $ cmake -G "Visual Studio 12 2013" -Dprotobuf_BUILD_TESTS=OFF ../..
+  ```
 
-3. Open solution `vsprojects\grpc_protoc_plugins.sln` and build it in Release mode. As a result, you should obtain a set of gRPC protoc plugin binaries (`grpc_cpp_plugin.exe`, `grpc_csharp_plugin.exe`, ...)
+- Open solution `third_party\protobuf\cmake\build\solution\protobuf.sln` and build it in Release mode. That will build libraries `libprotobuf.lib` and `libprotoc.lib` needed for the next step.
 
-#Building using CMake (with BoringSSL)
-1. Install [Active State Perl](http://www.activestate.com/activeperl/) (`choco install activeperl`)
-2. Install [Ninja](https://ninja-build.org/) (`choco install ninja`)
-2. Install [Go](https://golang.org/dl/) (`choco install golang`)
-3. Install [yasm](http://yasm.tortall.net/) and add it to `PATH` (`choco install yasm`)
-4. Update boringssl sumbodule to `master`
-5. Run this commads in grpc directory:
-```
-> md .build
-> cd .build
-> call "%VS140COMNTOOLS%..\..\VC\vcvarsall.bat" x64
-> cmake .. -GNinja -DCMAKE_BUILD_TYPE=Release
-> cmake --build .
-```
+- Open solution `vsprojects\grpc_protoc_plugins.sln` and build it in Release mode. As a result, you should obtain a set of gRPC protoc plugin binaries (`grpc_cpp_plugin.exe`, `grpc_csharp_plugin.exe`, ...)
diff --git a/vsprojects/build_vs2010.bat b/vsprojects/build_vs2010.bat
deleted file mode 100644
index d951295369651beb2967624e7a5e775d86dc60cb..0000000000000000000000000000000000000000
--- a/vsprojects/build_vs2010.bat
+++ /dev/null
@@ -1,39 +0,0 @@
-@rem Copyright 2016, Google Inc.
-@rem All rights reserved.
-@rem
-@rem Redistribution and use in source and binary forms, with or without
-@rem modification, are permitted provided that the following conditions are
-@rem met:
-@rem
-@rem     * Redistributions of source code must retain the above copyright
-@rem notice, this list of conditions and the following disclaimer.
-@rem     * Redistributions in binary form must reproduce the above
-@rem copyright notice, this list of conditions and the following disclaimer
-@rem in the documentation and/or other materials provided with the
-@rem distribution.
-@rem     * Neither the name of Google Inc. nor the names of its
-@rem contributors may be used to endorse or promote products derived from
-@rem this software without specific prior written permission.
-@rem
-@rem THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-@rem "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-@rem LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-@rem A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-@rem OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-@rem SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-@rem LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-@rem DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-@rem THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-@rem (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-@rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-@rem Convenience wrapper that runs specified gRPC target using msbuild
-@rem Usage: build_vs2010.bat TARGET_NAME
-
-setlocal
-@rem Set VS variables (uses Visual Studio 2010)
-@call "%VS100COMNTOOLS%\..\..\vc\vcvarsall.bat" x86
-
-msbuild %*
-exit /b %ERRORLEVEL%
-endlocal
diff --git a/vsprojects/buildtests_c.sln b/vsprojects/buildtests_c.sln
index d08a47aa86e621c042e489613a6eb6c0ac30c88f..f484f29a4b25dc3f6412404fe5634a68435f00da 100644
--- a/vsprojects/buildtests_c.sln
+++ b/vsprojects/buildtests_c.sln
@@ -1202,6 +1202,28 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "load_file_test", "vcxproj\t
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "memory_profile_client", "vcxproj\test\memory_profile_client\memory_profile_client.vcxproj", "{98C01DBE-EFFE-6988-0762-829DC88F0EB4}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "memory_profile_server", "vcxproj\test\memory_profile_server\memory_profile_server.vcxproj", "{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "message_compress_test", "vcxproj\test\message_compress_test\message_compress_test.vcxproj", "{07170557-CCB0-D23C-8018-C2909D115DF9}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -3377,6 +3399,38 @@ Global
 		{DC76C089-0D55-DF19-7CCA-49DAE5D29E49}.Release-DLL|Win32.Build.0 = Release|Win32
 		{DC76C089-0D55-DF19-7CCA-49DAE5D29E49}.Release-DLL|x64.ActiveCfg = Release|x64
 		{DC76C089-0D55-DF19-7CCA-49DAE5D29E49}.Release-DLL|x64.Build.0 = Release|x64
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Debug|Win32.ActiveCfg = Debug|Win32
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Debug|x64.ActiveCfg = Debug|x64
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Release|Win32.ActiveCfg = Release|Win32
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Release|x64.ActiveCfg = Release|x64
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Debug|Win32.Build.0 = Debug|Win32
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Debug|x64.Build.0 = Debug|x64
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Release|Win32.Build.0 = Release|Win32
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Release|x64.Build.0 = Release|x64
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Debug-DLL|x64.Build.0 = Debug|x64
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Release-DLL|Win32.Build.0 = Release|Win32
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Release-DLL|x64.ActiveCfg = Release|x64
+		{98C01DBE-EFFE-6988-0762-829DC88F0EB4}.Release-DLL|x64.Build.0 = Release|x64
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Debug|Win32.ActiveCfg = Debug|Win32
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Debug|x64.ActiveCfg = Debug|x64
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Release|Win32.ActiveCfg = Release|Win32
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Release|x64.ActiveCfg = Release|x64
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Debug|Win32.Build.0 = Debug|Win32
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Debug|x64.Build.0 = Debug|x64
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Release|Win32.Build.0 = Release|Win32
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Release|x64.Build.0 = Release|x64
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Debug-DLL|x64.Build.0 = Debug|x64
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Release-DLL|Win32.Build.0 = Release|Win32
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Release-DLL|x64.ActiveCfg = Release|x64
+		{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}.Release-DLL|x64.Build.0 = Release|x64
 		{07170557-CCB0-D23C-8018-C2909D115DF9}.Debug|Win32.ActiveCfg = Debug|Win32
 		{07170557-CCB0-D23C-8018-C2909D115DF9}.Debug|x64.ActiveCfg = Debug|x64
 		{07170557-CCB0-D23C-8018-C2909D115DF9}.Release|Win32.ActiveCfg = Release|Win32
diff --git a/vsprojects/coapp/zlib/README.md b/vsprojects/coapp/zlib/README.md
index d62e9030ed7737553ce9ccb31c701e0985eb0daf..e9a89c030eea5596237b2299c8c0072a4ab6de69 100644
--- a/vsprojects/coapp/zlib/README.md
+++ b/vsprojects/coapp/zlib/README.md
@@ -10,7 +10,7 @@ Multiple versions of VS installed to be able to build all the targets:
 * Visual Studio 2013
 * Visual Studio 2010 (you might need SP1 to prevent LNK1123 error)
 
-CoApp toolkit: http://downloads.coapp.org/files/CoApp.Tools.Powershell.msi
+CoApp toolkit: http://coapp.org/files/CoApp.Tools.Powershell.msi
 
 More details on installation: http://coapp.org/tutorials/installation.html
 
@@ -33,4 +33,4 @@ This will create three NuGet packages:
 * the symbols package (debug symbols)
 
 Later, you can push the package to NuGet.org repo.
-Attention: before pusing the resulting nuget package to public nuget repo, you have to be 100% sure it works correctly - there’s no way how to delete or update an already existing package.
\ No newline at end of file
+Attention: before pusing the resulting nuget package to public nuget repo, you have to be 100% sure it works correctly - there’s no way how to delete or update an already existing package.
diff --git a/vsprojects/grpc.sln b/vsprojects/grpc.sln
index 63be171c6efeaae3af7320a04f5b8f05d381913b..591d3b5edb244fd4c4676415d74bd2348ead6b43 100644
--- a/vsprojects/grpc.sln
+++ b/vsprojects/grpc.sln
@@ -3,11 +3,6 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 2013
 VisualStudioVersion = 12.0.21005.1
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "boringssl", "vcxproj\.\boringssl\boringssl.vcxproj", "{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gen_hpack_tables", "vcxproj\.\gen_hpack_tables\gen_hpack_tables.vcxproj", "{FCDEA4C7-7F26-05DB-D08F-A08F499026E6}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -56,14 +51,6 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc++", "vcxproj\.\grpc++\
 		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
 	EndProjectSection
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc++_reflection", "vcxproj\.\grpc++_reflection\grpc++_reflection.vcxproj", "{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{C187A093-A0FE-489D-A40A-6E33DE0F9FEB} = {C187A093-A0FE-489D-A40A-6E33DE0F9FEB}
-	EndProjectSection
-EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc++_unsecure", "vcxproj\.\grpc++_unsecure\grpc++_unsecure.vcxproj", "{6EE56155-DF7C-4F6E-BFC4-F6F776BEB211}"
 	ProjectSection(myProperties) = preProject
         	lib = "True"
@@ -161,11 +148,6 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "test_tcp_server", "vcxproj\
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "z", "vcxproj\.\z\z.vcxproj", "{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -178,22 +160,6 @@ Global
 		Release-DLL|x64 = Release-DLL|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Debug|Win32.ActiveCfg = Debug|Win32
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Debug|x64.ActiveCfg = Debug|x64
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Release|Win32.ActiveCfg = Release|Win32
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Release|x64.ActiveCfg = Release|x64
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Debug|Win32.Build.0 = Debug|Win32
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Debug|x64.Build.0 = Debug|x64
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Release|Win32.Build.0 = Release|Win32
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Release|x64.Build.0 = Release|x64
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Debug-DLL|Win32.Build.0 = Debug|Win32
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Debug-DLL|x64.ActiveCfg = Debug|x64
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Debug-DLL|x64.Build.0 = Debug|x64
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Release-DLL|Win32.ActiveCfg = Release|Win32
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Release-DLL|Win32.Build.0 = Release|Win32
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Release-DLL|x64.ActiveCfg = Release|x64
-		{9FD9A3EF-C4A3-8390-D8F4-6F86C22A58CE}.Release-DLL|x64.Build.0 = Release|x64
 		{FCDEA4C7-7F26-05DB-D08F-A08F499026E6}.Debug|Win32.ActiveCfg = Debug|Win32
 		{FCDEA4C7-7F26-05DB-D08F-A08F499026E6}.Debug|x64.ActiveCfg = Debug|x64
 		{FCDEA4C7-7F26-05DB-D08F-A08F499026E6}.Release|Win32.ActiveCfg = Release|Win32
@@ -306,22 +272,6 @@ Global
 		{C187A093-A0FE-489D-A40A-6E33DE0F9FEB}.Release-DLL|Win32.Build.0 = Release-DLL|Win32
 		{C187A093-A0FE-489D-A40A-6E33DE0F9FEB}.Release-DLL|x64.ActiveCfg = Release-DLL|x64
 		{C187A093-A0FE-489D-A40A-6E33DE0F9FEB}.Release-DLL|x64.Build.0 = Release-DLL|x64
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Debug|Win32.ActiveCfg = Debug|Win32
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Debug|x64.ActiveCfg = Debug|x64
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Release|Win32.ActiveCfg = Release|Win32
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Release|x64.ActiveCfg = Release|x64
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Debug|Win32.Build.0 = Debug|Win32
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Debug|x64.Build.0 = Debug|x64
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Release|Win32.Build.0 = Release|Win32
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Release|x64.Build.0 = Release|x64
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Debug-DLL|Win32.Build.0 = Debug|Win32
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Debug-DLL|x64.ActiveCfg = Debug|x64
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Debug-DLL|x64.Build.0 = Debug|x64
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Release-DLL|Win32.ActiveCfg = Release|Win32
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Release-DLL|Win32.Build.0 = Release|Win32
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Release-DLL|x64.ActiveCfg = Release|x64
-		{5F575402-3F89-5D1A-6910-9DB8BF5D2BAB}.Release-DLL|x64.Build.0 = Release|x64
 		{6EE56155-DF7C-4F6E-BFC4-F6F776BEB211}.Debug|Win32.ActiveCfg = Debug|Win32
 		{6EE56155-DF7C-4F6E-BFC4-F6F776BEB211}.Debug|x64.ActiveCfg = Debug|x64
 		{6EE56155-DF7C-4F6E-BFC4-F6F776BEB211}.Release|Win32.ActiveCfg = Release|Win32
@@ -482,22 +432,6 @@ Global
 		{E3110C46-A148-FF65-08FD-3324829BE7FE}.Release-DLL|Win32.Build.0 = Release|Win32
 		{E3110C46-A148-FF65-08FD-3324829BE7FE}.Release-DLL|x64.ActiveCfg = Release|x64
 		{E3110C46-A148-FF65-08FD-3324829BE7FE}.Release-DLL|x64.Build.0 = Release|x64
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Debug|Win32.ActiveCfg = Debug|Win32
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Debug|x64.ActiveCfg = Debug|x64
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Release|Win32.ActiveCfg = Release|Win32
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Release|x64.ActiveCfg = Release|x64
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Debug|Win32.Build.0 = Debug|Win32
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Debug|x64.Build.0 = Debug|x64
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Release|Win32.Build.0 = Release|Win32
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Release|x64.Build.0 = Release|x64
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Debug-DLL|Win32.Build.0 = Debug|Win32
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Debug-DLL|x64.ActiveCfg = Debug|x64
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Debug-DLL|x64.Build.0 = Debug|x64
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Release-DLL|Win32.ActiveCfg = Release|Win32
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Release-DLL|Win32.Build.0 = Release|Win32
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Release-DLL|x64.ActiveCfg = Release|x64
-		{FBADE9E3-6A3F-36D3-D676-C1B808451DD7}.Release-DLL|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/vsprojects/vcxproj/gpr/gpr.vcxproj b/vsprojects/vcxproj/gpr/gpr.vcxproj
index ce593473c07a13f89b4d8c1b4dd76beb81744a64..c4f9c55308e2941a4f919002d4f4dc59fddb378d 100644
--- a/vsprojects/vcxproj/gpr/gpr.vcxproj
+++ b/vsprojects/vcxproj/gpr/gpr.vcxproj
@@ -177,6 +177,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
diff --git a/vsprojects/vcxproj/gpr/gpr.vcxproj.filters b/vsprojects/vcxproj/gpr/gpr.vcxproj.filters
index a50a9f420013b84f9be78a94df9fcfbe70f1b772..77a1ba64d649c41e6468a6b7a8e4387a4aac9267 100644
--- a/vsprojects/vcxproj/gpr/gpr.vcxproj.filters
+++ b/vsprojects/vcxproj/gpr/gpr.vcxproj.filters
@@ -225,6 +225,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc++/grpc++.vcxproj b/vsprojects/vcxproj/grpc++/grpc++.vcxproj
index f281db72b6675506ab42685ae004772f97746a7f..bd9c5467d8e092dc99de0e2e253efa60da56b53c 100644
--- a/vsprojects/vcxproj/grpc++/grpc++.vcxproj
+++ b/vsprojects/vcxproj/grpc++/grpc++.vcxproj
@@ -331,6 +331,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
@@ -338,6 +339,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
diff --git a/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters b/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
index f359e4ef31ad032401244b72f29cda5ac3a7026d..93d8274dc0febf2888aa263db6dda30868a6ac5a 100644
--- a/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
@@ -333,6 +333,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -354,6 +357,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
index d2305b2e25591b4f0eb892de982197f8cf1e21fb..7eba5c52ab2b5d8d20250e763445ddd2fb5d2d0e 100644
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
@@ -178,6 +178,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
@@ -185,6 +186,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
diff --git a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
index d1aaba70926a9c53a58be9c2d71818adc0d33ccd..9a10e07056accdf03f1a33ba3c5ca2aa7eb660e2 100644
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
@@ -126,6 +126,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -147,6 +150,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
index 1511a2cfe4cec342e194c6f20563ce9b7ae15d9a..7f2e815f20049470bc911d442aa2de6f4da35e91 100644
--- a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
@@ -331,6 +331,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
@@ -338,6 +339,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
diff --git a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
index bed77b25a449d859bb76cbc5ebb61bbe21dcd617..df62384b1e207294008db12e6c11a82f3ee2951b 100644
--- a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
@@ -318,6 +318,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -339,6 +342,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj
index 558b5b0c66a6f870f2a8b9df14c19cf86d18c2c3..c159db63f55423581334cb7339967937fb9132cc 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@@ -279,6 +279,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
@@ -286,6 +287,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
@@ -305,6 +307,8 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\context.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\deadline_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h" />
@@ -371,6 +375,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\api_trace.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call.h" />
@@ -494,6 +499,10 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
index a40a1b5f1c854d76797eb1596225b048ff2ee76a..1e099f3285e90e1fcd32dcbf8add0b5dbe553982 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@@ -25,6 +25,12 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
@@ -684,6 +690,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -705,6 +714,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -758,6 +770,12 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.h">
+      <Filter>src\core\lib\channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h">
+      <Filter>src\core\lib\channel</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
@@ -956,6 +974,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h">
       <Filter>src\core\lib\slice</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h">
       <Filter>src\core\lib\slice</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj
index 2acdd32cf3ec3ddf92d211a3f1180e484b6ae50e..230c3eb3dfb29bcfe13955c2c6ce995cc59bcc2c 100644
--- a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj
+++ b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj
@@ -159,6 +159,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
@@ -166,6 +167,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
@@ -198,6 +200,8 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\context.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\deadline_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h" />
@@ -264,6 +268,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\api_trace.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call.h" />
@@ -343,6 +348,10 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
diff --git a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters
index 6c918f125463d4dbc6df7fe589ecb7a34aba938e..46a38156ea7c4e33693d5cd29473381fdaf26706 100644
--- a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters
@@ -82,6 +82,12 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
@@ -435,6 +441,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -456,6 +465,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -548,6 +560,12 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.h">
+      <Filter>src\core\lib\channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h">
+      <Filter>src\core\lib\channel</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
@@ -746,6 +764,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h">
       <Filter>src\core\lib\slice</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h">
       <Filter>src\core\lib\slice</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
index 661192101c8209ae255839d1efd812d6f04c6480..dcb943a3a11b28da4b718e3bc9435184d4efb0aa 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
@@ -270,6 +270,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
@@ -277,6 +278,7 @@
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     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
@@ -295,6 +297,8 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\deadline_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h" />
@@ -361,6 +365,7 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\api_trace.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call.h" />
@@ -462,6 +467,10 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index 466116e60439a633909c3282b5e23efec86dc616..ac84e0188c899b58f94bc56e650f1886fbc29595 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -28,6 +28,12 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
@@ -600,6 +606,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -621,6 +630,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -671,6 +683,12 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.h">
+      <Filter>src\core\lib\channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h">
+      <Filter>src\core\lib\channel</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
@@ -869,6 +887,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h">
       <Filter>src\core\lib\slice</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h">
       <Filter>src\core\lib\slice</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/http2_client_main/http2_client_main.vcxproj b/vsprojects/vcxproj/http2_client_main/http2_client_main.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..c94c346ed9943cdbefed5bd593021661dfe5de0b
--- /dev/null
+++ b/vsprojects/vcxproj/http2_client_main/http2_client_main.vcxproj
@@ -0,0 +1,206 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{8008C126-4B35-5A76-A795-39DA13DA57F4}</ProjectGuid>
+    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
+    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)\..\vsprojects\global.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\winsock.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>http2_client_main</TargetName>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'">
+    <TargetName>http2_client_main</TargetName>
+  </PropertyGroup>
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+  <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\test\cpp\interop\http2_client.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\empty.pb.cc">
+    </ClCompile>
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\testing\empty.pb.h">
+    </ClInclude>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\empty.grpc.pb.cc">
+    </ClCompile>
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\testing\empty.grpc.pb.h">
+    </ClInclude>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\messages.pb.cc">
+    </ClCompile>
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\testing\messages.pb.h">
+    </ClInclude>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\messages.grpc.pb.cc">
+    </ClCompile>
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\testing\messages.grpc.pb.h">
+    </ClInclude>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\test.pb.cc">
+    </ClCompile>
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\testing\test.pb.h">
+    </ClInclude>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\test.grpc.pb.cc">
+    </ClCompile>
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\testing\test.grpc.pb.h">
+    </ClInclude>
+    <ClCompile Include="$(SolutionDir)\..\test\cpp\interop\http2_client.cc">
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+  <ItemGroup>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc++_test_util\grpc++_test_util.vcxproj">
+      <Project>{0BE77741-552A-929B-A497-4EF7ECE17A64}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc_test_util\grpc_test_util.vcxproj">
+      <Project>{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc++\grpc++.vcxproj">
+      <Project>{C187A093-A0FE-489D-A40A-6E33DE0F9FEB}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc\grpc.vcxproj">
+      <Project>{29D16885-7228-4C31-81ED-5F9187C7F2A9}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc++_test_config\grpc++_test_config.vcxproj">
+      <Project>{3F7D093D-11F9-C4BC-BEB7-18EB28E3F290}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+  </Target>
+</Project>
+
diff --git a/vsprojects/vcxproj/http2_client_main/http2_client_main.vcxproj.filters b/vsprojects/vcxproj/http2_client_main/http2_client_main.vcxproj.filters
new file mode 100644
index 0000000000000000000000000000000000000000..40e419134510680ccc93fee67d1a132df6a0e6d4
--- /dev/null
+++ b/vsprojects/vcxproj/http2_client_main/http2_client_main.vcxproj.filters
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\empty.proto">
+      <Filter>src\proto\grpc\testing</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\messages.proto">
+      <Filter>src\proto\grpc\testing</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\test.proto">
+      <Filter>src\proto\grpc\testing</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\cpp\interop\http2_client.cc">
+      <Filter>test\cpp\interop</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\test\cpp\interop\http2_client.h">
+      <Filter>test\cpp\interop</Filter>
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+
+  <ItemGroup>
+    <Filter Include="src">
+      <UniqueIdentifier>{8f01743f-58cf-2127-20d1-21303c8e0e8e}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\proto">
+      <UniqueIdentifier>{219dd0bc-d605-d0fa-cca4-460276dd64cf}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\proto\grpc">
+      <UniqueIdentifier>{7ee50971-dbc6-3240-e6a2-a432dac43e90}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\proto\grpc\testing">
+      <UniqueIdentifier>{66289b19-9541-151c-03a1-771101833b4e}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test">
+      <UniqueIdentifier>{18fdd193-31a2-a622-980e-df055c23af50}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\cpp">
+      <UniqueIdentifier>{f6da8892-ac51-d835-468a-b3b093df4baa}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\cpp\interop">
+      <UniqueIdentifier>{e32cff29-3247-cece-56cf-8fd16a1a79fe}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+</Project>
+
diff --git a/vsprojects/vcxproj/interop_server_helper/interop_server_helper.vcxproj b/vsprojects/vcxproj/interop_server_helper/interop_server_helper.vcxproj
index 4c99988a34c482f55a4e8f9749ab54fa404db885..377cadc1a1ea1f4781930439f2ce36db9b9213ae 100644
--- a/vsprojects/vcxproj/interop_server_helper/interop_server_helper.vcxproj
+++ b/vsprojects/vcxproj/interop_server_helper/interop_server_helper.vcxproj
@@ -154,6 +154,9 @@
     </ClCompile>
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc++_test_util\grpc++_test_util.vcxproj">
+      <Project>{0BE77741-552A-929B-A497-4EF7ECE17A64}</Project>
+    </ProjectReference>
     <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc_test_util\grpc_test_util.vcxproj">
       <Project>{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}</Project>
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diff --git a/vsprojects/vcxproj/qps/qps.vcxproj b/vsprojects/vcxproj/qps/qps.vcxproj
index 004cf7c9f0e5e6da2090de2053b3833efc783ac9..2d7892683a85d911d42239a173451e2f10d4daa8 100644
--- a/vsprojects/vcxproj/qps/qps.vcxproj
+++ b/vsprojects/vcxproj/qps/qps.vcxproj
@@ -151,7 +151,6 @@
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     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\interarrival.h" />
-    <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\limit_cores.h" />
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\parse_json.h" />
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\qps_worker.h" />
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\report.h" />
@@ -207,8 +206,6 @@
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     <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\driver.cc">
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-    <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\limit_cores.cc">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\parse_json.cc">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\qps_worker.cc">
diff --git a/vsprojects/vcxproj/qps/qps.vcxproj.filters b/vsprojects/vcxproj/qps/qps.vcxproj.filters
index d3a440ba73026640f62f61cb110c9ab217545e68..f25be9af191a02a4d50aa86939acafa668cb45f0 100644
--- a/vsprojects/vcxproj/qps/qps.vcxproj.filters
+++ b/vsprojects/vcxproj/qps/qps.vcxproj.filters
@@ -25,9 +25,6 @@
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-      <Filter>test\cpp\qps</Filter>
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       <Filter>test\cpp\qps</Filter>
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@@ -63,9 +60,6 @@
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-      <Filter>test\cpp\qps</Filter>
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diff --git a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj
index a2b2a1dfa0fa3f84902ebabb037a71164b7bcb28..ad6865a9344190e29dde50f5c0f85e6c8bdb431d 100644
--- a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj
+++ b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj
@@ -191,6 +191,7 @@
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     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
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@@ -198,6 +199,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
diff --git a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters
index 94b6c2530ef003e74174d671358f7104a9fa45e1..1b367b1869b4fa34d95a30ca80b08d2840b8fa37 100644
--- a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters
+++ b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters
@@ -114,6 +114,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -135,6 +138,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj
index 1a3c1579837556b65af06c64a55e79d38492524f..9df670224031c40b0d4156f040731c1caac1785a 100644
--- a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj
+++ b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj
@@ -191,6 +191,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
@@ -198,6 +199,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
diff --git a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters
index 1f4b60ca4d91e57b958398a65aca03b7c854155e..c8f62ff93ab091cff0f3a8c29014431127e56d36 100644
--- a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters
+++ b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters
@@ -117,6 +117,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -138,6 +141,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
index 4fb8f8f4a15d74ea465af9b9e4a3f58c5215657a..6506f24d1bb0e27b148e3158aeae5e25efe51ee9 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
@@ -247,6 +247,10 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\trailing_metadata.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\write_buffering.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\write_buffering_at_end.c">
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc_test_util_unsecure\grpc_test_util_unsecure.vcxproj">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
index ff82a4dd43cc0cd5d4c9933acd72fa9aa1c29e0d..77e5ebf8b19b1b1310a2f4f49a279cfb7b59285f 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
@@ -145,6 +145,12 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\trailing_metadata.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\write_buffering.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\write_buffering_at_end.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="$(SolutionDir)\..\test\core\end2end\tests\cancel_test_helpers.h">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
index 0b7d7c2e7524e39e19c47dc1d925ddf4e52253f5..176e8f7197643fcf9b9a569010fbc4090f54dc01 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
@@ -249,6 +249,10 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\trailing_metadata.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\write_buffering.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\write_buffering_at_end.c">
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc_test_util\grpc_test_util.vcxproj">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
index e641930e64a1efa9648e024e5a4a7658bfd848fa..fa7026793389d83343a9862c93b04955b1b570f6 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
@@ -148,6 +148,12 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\trailing_metadata.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\write_buffering.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\write_buffering_at_end.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="$(SolutionDir)\..\test\core\end2end\tests\cancel_test_helpers.h">
diff --git a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj
index 1e3cc3ca043c11d90f554ab1a66cb17ca077890f..88e4bf63f8268a9e8ed698b2011139a43fdafa28 100644
--- a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj
+++ b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj
@@ -192,6 +192,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
@@ -199,6 +200,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
diff --git a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters
index 1c308c58817b4e41ae23d4fb5539181d47488619..fece7f3ad804237d8c5ed26088f516448b2da675 100644
--- a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters
@@ -108,6 +108,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -129,6 +132,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/memory_profile_client/memory_profile_client.vcxproj b/vsprojects/vcxproj/test/memory_profile_client/memory_profile_client.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..b955bcae37e3719cae988161fff3f54be7addefd
--- /dev/null
+++ b/vsprojects/vcxproj/test/memory_profile_client/memory_profile_client.vcxproj
@@ -0,0 +1,199 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\1.0.204.1.props')" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{98C01DBE-EFFE-6988-0762-829DC88F0EB4}</ProjectGuid>
+    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
+    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)\..\vsprojects\global.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\openssl.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\winsock.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\zlib.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>memory_profile_client</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Debug</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Debug</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'">
+    <TargetName>memory_profile_client</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Release</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Release</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\test\core\memory_usage\client.c">
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc_test_util\grpc_test_util.vcxproj">
+      <Project>{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc\grpc.vcxproj">
+      <Project>{29D16885-7228-4C31-81ED-5F9187C7F2A9}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr_test_util\gpr_test_util.vcxproj">
+      <Project>{EAB0A629-17A9-44DB-B5FF-E91A721FE037}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr\gpr.vcxproj">
+      <Project>{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies\grpc.dependencies.zlib.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies\grpc.dependencies.zlib.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies\grpc.dependencies.openssl.targets')" />
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diff --git a/vsprojects/vcxproj/test/memory_profile_client/memory_profile_client.vcxproj.filters b/vsprojects/vcxproj/test/memory_profile_client/memory_profile_client.vcxproj.filters
new file mode 100644
index 0000000000000000000000000000000000000000..b250b538d12ad33176c4424a9054d957be198d86
--- /dev/null
+++ b/vsprojects/vcxproj/test/memory_profile_client/memory_profile_client.vcxproj.filters
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
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diff --git a/vsprojects/vcxproj/test/memory_profile_server/memory_profile_server.vcxproj b/vsprojects/vcxproj/test/memory_profile_server/memory_profile_server.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..0b3c87997e1ef6c29aa23599357063225a1b6848
--- /dev/null
+++ b/vsprojects/vcxproj/test/memory_profile_server/memory_profile_server.vcxproj
@@ -0,0 +1,199 @@
+<?xml version="1.0" encoding="utf-8"?>
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+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
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+    <ProjectConfiguration Include="Debug|x64">
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+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}</ProjectGuid>
+    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
+    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)\..\vsprojects\global.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\openssl.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\winsock.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\zlib.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>memory_profile_server</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Debug</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Debug</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'">
+    <TargetName>memory_profile_server</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Release</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Release</Configuration-grpc_dependencies_openssl>
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+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
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+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
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+      <WarningLevel>Level3</WarningLevel>
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+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
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+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
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+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
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+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
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+      <OptimizeReferences>true</OptimizeReferences>
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+  <ItemGroup>
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diff --git a/vsprojects/vcxproj/test/memory_profile_server/memory_profile_server.vcxproj.filters b/vsprojects/vcxproj/test/memory_profile_server/memory_profile_server.vcxproj.filters
new file mode 100644
index 0000000000000000000000000000000000000000..c95888e7a1c5f08c736139e3b0346cb731ee0e6d
--- /dev/null
+++ b/vsprojects/vcxproj/test/memory_profile_server/memory_profile_server.vcxproj.filters
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\test\core\memory_usage\server.c">
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