diff --git a/BUILD b/BUILD
index 8366fa17691b29fa31d61313f441e0df7bad1283..d462a148bf10167d1e1aa4eb96c43852850f4fa0 100644
--- a/BUILD
+++ b/BUILD
@@ -637,9 +637,9 @@ cc_library(
     "src/cpp/server/secure_server_credentials.h",
     "src/cpp/client/channel.h",
     "src/cpp/common/create_auth_context.h",
-    "src/cpp/server/thread_pool.h",
     "src/cpp/client/secure_channel_arguments.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_create_auth_context.cc",
     "src/cpp/server/secure_server_credentials.cc",
@@ -657,12 +657,12 @@ cc_library(
     "src/cpp/proto/proto_utils.cc",
     "src/cpp/server/async_generic_service.cc",
     "src/cpp/server/create_default_thread_pool.cc",
+    "src/cpp/server/fixed_size_thread_pool.cc",
     "src/cpp/server/insecure_server_credentials.cc",
     "src/cpp/server/server.cc",
     "src/cpp/server/server_builder.cc",
     "src/cpp/server/server_context.cc",
     "src/cpp/server/server_credentials.cc",
-    "src/cpp/server/thread_pool.cc",
     "src/cpp/util/byte_buffer.cc",
     "src/cpp/util/slice.cc",
     "src/cpp/util/status.cc",
@@ -672,6 +672,7 @@ cc_library(
     "include/grpc++/async_generic_service.h",
     "include/grpc++/async_unary_call.h",
     "include/grpc++/auth_context.h",
+    "include/grpc++/auth_property_iterator.h",
     "include/grpc++/byte_buffer.h",
     "include/grpc++/channel_arguments.h",
     "include/grpc++/channel_interface.h",
@@ -681,6 +682,7 @@ cc_library(
     "include/grpc++/config_protobuf.h",
     "include/grpc++/create_channel.h",
     "include/grpc++/credentials.h",
+    "include/grpc++/fixed_size_thread_pool.h",
     "include/grpc++/generic_stub.h",
     "include/grpc++/impl/call.h",
     "include/grpc++/impl/client_unary_call.h",
@@ -725,7 +727,6 @@ cc_library(
   srcs = [
     "src/cpp/client/channel.h",
     "src/cpp/common/create_auth_context.h",
-    "src/cpp/server/thread_pool.h",
     "src/cpp/common/insecure_create_auth_context.cc",
     "src/cpp/client/channel.cc",
     "src/cpp/client/channel_arguments.cc",
@@ -741,12 +742,12 @@ cc_library(
     "src/cpp/proto/proto_utils.cc",
     "src/cpp/server/async_generic_service.cc",
     "src/cpp/server/create_default_thread_pool.cc",
+    "src/cpp/server/fixed_size_thread_pool.cc",
     "src/cpp/server/insecure_server_credentials.cc",
     "src/cpp/server/server.cc",
     "src/cpp/server/server_builder.cc",
     "src/cpp/server/server_context.cc",
     "src/cpp/server/server_credentials.cc",
-    "src/cpp/server/thread_pool.cc",
     "src/cpp/util/byte_buffer.cc",
     "src/cpp/util/slice.cc",
     "src/cpp/util/status.cc",
@@ -756,6 +757,7 @@ cc_library(
     "include/grpc++/async_generic_service.h",
     "include/grpc++/async_unary_call.h",
     "include/grpc++/auth_context.h",
+    "include/grpc++/auth_property_iterator.h",
     "include/grpc++/byte_buffer.h",
     "include/grpc++/channel_arguments.h",
     "include/grpc++/channel_interface.h",
@@ -765,6 +767,7 @@ cc_library(
     "include/grpc++/config_protobuf.h",
     "include/grpc++/create_channel.h",
     "include/grpc++/credentials.h",
+    "include/grpc++/fixed_size_thread_pool.h",
     "include/grpc++/generic_stub.h",
     "include/grpc++/impl/call.h",
     "include/grpc++/impl/client_unary_call.h",
diff --git a/Makefile b/Makefile
index 695f0008f3939eed2898cdcd3a6ca24beed941f3..2ee94137471d887946ca08ad206dccec3daa2944 100644
--- a/Makefile
+++ b/Makefile
@@ -339,10 +339,10 @@ CACHE_MK =
 HAS_PKG_CONFIG ?= $(shell command -v $(PKG_CONFIG) >/dev/null 2>&1 && echo true || echo false)
 
 ifeq ($(HAS_PKG_CONFIG), true)
-CACHE_MK += HAS_PKG_CONFIG = true\n
+CACHE_MK += HAS_PKG_CONFIG = true,
 endif
 
-PC_TEMPLATE = prefix=$(prefix)\nexec_prefix=\$${prefix}\nincludedir=\$${prefix}/include\nlibdir=\$${exec_prefix}/lib\n\nName: $(PC_NAME)\nDescription: $(PC_DESCRIPTION)\nVersion: $(VERSION)\nCflags: -I\$${includedir} $(PC_CFLAGS)\nRequires.private: $(PC_REQUIRES_PRIVATE)\nLibs: -L\$${libdir} $(PC_LIB)\nLibs.private: $(PC_LIBS_PRIVATE)
+PC_TEMPLATE = prefix=$(prefix),exec_prefix=\$${prefix},includedir=\$${prefix}/include,libdir=\$${exec_prefix}/lib,,Name: $(PC_NAME),Description: $(PC_DESCRIPTION),Version: $(VERSION),Cflags: -I\$${includedir} $(PC_CFLAGS),Requires.private: $(PC_REQUIRES_PRIVATE),Libs: -L\$${libdir} $(PC_LIB),Libs.private: $(PC_LIBS_PRIVATE)
 
 # gpr .pc file
 PC_NAME = gRPC Portable Runtime
@@ -417,7 +417,7 @@ HAS_SYSTEM_PERFTOOLS ?= $(shell $(PERFTOOLS_CHECK_CMD) 2> /dev/null && echo true
 ifeq ($(HAS_SYSTEM_PERFTOOLS),true)
 DEFINES += GRPC_HAVE_PERFTOOLS
 LIBS += profiler
-CACHE_MK += HAS_SYSTEM_PERFTOOLS = true\n
+CACHE_MK += HAS_SYSTEM_PERFTOOLS = true,
 endif
 endif
 
@@ -426,20 +426,20 @@ ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_OPENSSL_ALPN ?= $(shell $(OPENSSL_ALPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
 ifeq ($(HAS_SYSTEM_OPENSSL_ALPN),true)
 HAS_SYSTEM_OPENSSL_NPN = true
-CACHE_MK += HAS_SYSTEM_OPENSSL_ALPN = true\n
+CACHE_MK += HAS_SYSTEM_OPENSSL_ALPN = true,
 else
 HAS_SYSTEM_OPENSSL_NPN ?= $(shell $(OPENSSL_NPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
 endif
 ifeq ($(HAS_SYSTEM_OPENSSL_NPN),true)
-CACHE_MK += HAS_SYSTEM_OPENSSL_NPN = true\n
+CACHE_MK += HAS_SYSTEM_OPENSSL_NPN = true,
 endif
 HAS_SYSTEM_ZLIB ?= $(shell $(ZLIB_CHECK_CMD) 2> /dev/null && echo true || echo false)
 ifeq ($(HAS_SYSTEM_ZLIB),true)
-CACHE_MK += HAS_SYSTEM_ZLIB = true\n
+CACHE_MK += HAS_SYSTEM_ZLIB = true,
 endif
 HAS_SYSTEM_PROTOBUF ?= $(HAS_SYSTEM_PROTOBUF_VERIFY)
 ifeq ($(HAS_SYSTEM_PROTOBUF),true)
-CACHE_MK += HAS_SYSTEM_PROTOBUF = true\n
+CACHE_MK += HAS_SYSTEM_PROTOBUF = true,
 endif
 else
 # override system libraries if the config requires a custom compiled library
@@ -451,10 +451,10 @@ endif
 
 HAS_PROTOC ?= $(shell $(PROTOC_CHECK_CMD) 2> /dev/null && echo true || echo false)
 ifeq ($(HAS_PROTOC),true)
-CACHE_MK += HAS_PROTOC = true\n
+CACHE_MK += HAS_PROTOC = true,
 HAS_VALID_PROTOC ?= $(shell $(PROTOC_CHECK_VERSION_CMD) 2> /dev/null && echo true || echo false)
 ifeq ($(HAS_VALID_PROTOC),true)
-CACHE_MK += HAS_VALID_PROTOC = true\n
+CACHE_MK += HAS_VALID_PROTOC = true,
 endif
 else
 HAS_VALID_PROTOC = false
@@ -475,7 +475,7 @@ endif
 endif
 
 ifeq ($(HAS_SYSTEMTAP),true)
-CACHE_MK += HAS_SYSTEMTAP = true\n
+CACHE_MK += HAS_SYSTEMTAP = true,
 endif
 
 # Note that for testing purposes, one can do:
@@ -834,7 +834,6 @@ tcp_client_posix_test: $(BINDIR)/$(CONFIG)/tcp_client_posix_test
 tcp_posix_test: $(BINDIR)/$(CONFIG)/tcp_posix_test
 tcp_server_posix_test: $(BINDIR)/$(CONFIG)/tcp_server_posix_test
 time_averaged_stats_test: $(BINDIR)/$(CONFIG)/time_averaged_stats_test
-time_test: $(BINDIR)/$(CONFIG)/time_test
 timeout_encoding_test: $(BINDIR)/$(CONFIG)/timeout_encoding_test
 timers_test: $(BINDIR)/$(CONFIG)/timers_test
 transport_metadata_test: $(BINDIR)/$(CONFIG)/transport_metadata_test
@@ -843,6 +842,7 @@ uri_parser_test: $(BINDIR)/$(CONFIG)/uri_parser_test
 async_end2end_test: $(BINDIR)/$(CONFIG)/async_end2end_test
 async_streaming_ping_pong_test: $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test
 async_unary_ping_pong_test: $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test
+auth_property_iterator_test: $(BINDIR)/$(CONFIG)/auth_property_iterator_test
 channel_arguments_test: $(BINDIR)/$(CONFIG)/channel_arguments_test
 cli_call_test: $(BINDIR)/$(CONFIG)/cli_call_test
 client_crash_test: $(BINDIR)/$(CONFIG)/client_crash_test
@@ -852,6 +852,7 @@ cxx_byte_buffer_test: $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test
 cxx_slice_test: $(BINDIR)/$(CONFIG)/cxx_slice_test
 cxx_time_test: $(BINDIR)/$(CONFIG)/cxx_time_test
 end2end_test: $(BINDIR)/$(CONFIG)/end2end_test
+fixed_size_thread_pool_test: $(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test
 generic_end2end_test: $(BINDIR)/$(CONFIG)/generic_end2end_test
 grpc_cli: $(BINDIR)/$(CONFIG)/grpc_cli
 grpc_cpp_plugin: $(BINDIR)/$(CONFIG)/grpc_cpp_plugin
@@ -877,7 +878,6 @@ server_crash_test_client: $(BINDIR)/$(CONFIG)/server_crash_test_client
 status_test: $(BINDIR)/$(CONFIG)/status_test
 sync_streaming_ping_pong_test: $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test
 sync_unary_ping_pong_test: $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test
-thread_pool_test: $(BINDIR)/$(CONFIG)/thread_pool_test
 thread_stress_test: $(BINDIR)/$(CONFIG)/thread_stress_test
 chttp2_fake_security_bad_hostname_test: $(BINDIR)/$(CONFIG)/chttp2_fake_security_bad_hostname_test
 chttp2_fake_security_cancel_after_accept_test: $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_test
@@ -1453,9 +1453,9 @@ privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG
 
 buildtests: buildtests_c buildtests_cxx
 
-buildtests_c: privatelibs_c $(BINDIR)/$(CONFIG)/alarm_heap_test $(BINDIR)/$(CONFIG)/alarm_list_test $(BINDIR)/$(CONFIG)/alarm_test $(BINDIR)/$(CONFIG)/alpn_test $(BINDIR)/$(CONFIG)/bin_encoder_test $(BINDIR)/$(CONFIG)/chttp2_status_conversion_test $(BINDIR)/$(CONFIG)/chttp2_stream_encoder_test $(BINDIR)/$(CONFIG)/chttp2_stream_map_test $(BINDIR)/$(CONFIG)/dualstack_socket_test $(BINDIR)/$(CONFIG)/fd_conservation_posix_test $(BINDIR)/$(CONFIG)/fd_posix_test $(BINDIR)/$(CONFIG)/fling_client $(BINDIR)/$(CONFIG)/fling_server $(BINDIR)/$(CONFIG)/fling_stream_test $(BINDIR)/$(CONFIG)/fling_test $(BINDIR)/$(CONFIG)/gpr_cancellable_test $(BINDIR)/$(CONFIG)/gpr_cmdline_test $(BINDIR)/$(CONFIG)/gpr_env_test $(BINDIR)/$(CONFIG)/gpr_file_test $(BINDIR)/$(CONFIG)/gpr_histogram_test $(BINDIR)/$(CONFIG)/gpr_host_port_test $(BINDIR)/$(CONFIG)/gpr_log_test $(BINDIR)/$(CONFIG)/gpr_slice_buffer_test $(BINDIR)/$(CONFIG)/gpr_slice_test $(BINDIR)/$(CONFIG)/gpr_stack_lockfree_test $(BINDIR)/$(CONFIG)/gpr_string_test $(BINDIR)/$(CONFIG)/gpr_sync_test $(BINDIR)/$(CONFIG)/gpr_thd_test $(BINDIR)/$(CONFIG)/gpr_time_test $(BINDIR)/$(CONFIG)/gpr_tls_test $(BINDIR)/$(CONFIG)/gpr_useful_test $(BINDIR)/$(CONFIG)/grpc_auth_context_test $(BINDIR)/$(CONFIG)/grpc_base64_test $(BINDIR)/$(CONFIG)/grpc_byte_buffer_reader_test $(BINDIR)/$(CONFIG)/grpc_channel_stack_test $(BINDIR)/$(CONFIG)/grpc_completion_queue_test $(BINDIR)/$(CONFIG)/grpc_credentials_test $(BINDIR)/$(CONFIG)/grpc_json_token_test $(BINDIR)/$(CONFIG)/grpc_jwt_verifier_test $(BINDIR)/$(CONFIG)/grpc_security_connector_test $(BINDIR)/$(CONFIG)/grpc_stream_op_test $(BINDIR)/$(CONFIG)/hpack_parser_test $(BINDIR)/$(CONFIG)/hpack_table_test $(BINDIR)/$(CONFIG)/httpcli_format_request_test $(BINDIR)/$(CONFIG)/httpcli_parser_test $(BINDIR)/$(CONFIG)/httpcli_test $(BINDIR)/$(CONFIG)/json_rewrite $(BINDIR)/$(CONFIG)/json_rewrite_test $(BINDIR)/$(CONFIG)/json_test $(BINDIR)/$(CONFIG)/lame_client_test $(BINDIR)/$(CONFIG)/message_compress_test $(BINDIR)/$(CONFIG)/multi_init_test $(BINDIR)/$(CONFIG)/multiple_server_queues_test $(BINDIR)/$(CONFIG)/murmur_hash_test $(BINDIR)/$(CONFIG)/no_server_test $(BINDIR)/$(CONFIG)/poll_kick_posix_test $(BINDIR)/$(CONFIG)/resolve_address_test $(BINDIR)/$(CONFIG)/secure_endpoint_test $(BINDIR)/$(CONFIG)/sockaddr_utils_test $(BINDIR)/$(CONFIG)/tcp_client_posix_test $(BINDIR)/$(CONFIG)/tcp_posix_test $(BINDIR)/$(CONFIG)/tcp_server_posix_test $(BINDIR)/$(CONFIG)/time_averaged_stats_test $(BINDIR)/$(CONFIG)/time_test $(BINDIR)/$(CONFIG)/timeout_encoding_test $(BINDIR)/$(CONFIG)/timers_test $(BINDIR)/$(CONFIG)/transport_metadata_test $(BINDIR)/$(CONFIG)/transport_security_test $(BINDIR)/$(CONFIG)/uri_parser_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_empty_batch_test 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$(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/connection_prefix_bad_client_test $(BINDIR)/$(CONFIG)/initial_settings_frame_bad_client_test
 
-buildtests_cxx: privatelibs_cxx $(BINDIR)/$(CONFIG)/async_end2end_test $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test $(BINDIR)/$(CONFIG)/channel_arguments_test $(BINDIR)/$(CONFIG)/cli_call_test $(BINDIR)/$(CONFIG)/client_crash_test $(BINDIR)/$(CONFIG)/client_crash_test_server $(BINDIR)/$(CONFIG)/credentials_test $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test $(BINDIR)/$(CONFIG)/cxx_slice_test $(BINDIR)/$(CONFIG)/cxx_time_test $(BINDIR)/$(CONFIG)/end2end_test $(BINDIR)/$(CONFIG)/generic_end2end_test $(BINDIR)/$(CONFIG)/grpc_cli $(BINDIR)/$(CONFIG)/interop_client $(BINDIR)/$(CONFIG)/interop_server $(BINDIR)/$(CONFIG)/interop_test $(BINDIR)/$(CONFIG)/mock_test $(BINDIR)/$(CONFIG)/qps_interarrival_test $(BINDIR)/$(CONFIG)/qps_openloop_test $(BINDIR)/$(CONFIG)/qps_test $(BINDIR)/$(CONFIG)/secure_auth_context_test $(BINDIR)/$(CONFIG)/server_crash_test $(BINDIR)/$(CONFIG)/server_crash_test_client $(BINDIR)/$(CONFIG)/status_test $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/thread_pool_test $(BINDIR)/$(CONFIG)/thread_stress_test
+buildtests_cxx: privatelibs_cxx $(BINDIR)/$(CONFIG)/async_end2end_test $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test $(BINDIR)/$(CONFIG)/auth_property_iterator_test $(BINDIR)/$(CONFIG)/channel_arguments_test $(BINDIR)/$(CONFIG)/cli_call_test $(BINDIR)/$(CONFIG)/client_crash_test $(BINDIR)/$(CONFIG)/client_crash_test_server $(BINDIR)/$(CONFIG)/credentials_test $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test $(BINDIR)/$(CONFIG)/cxx_slice_test $(BINDIR)/$(CONFIG)/cxx_time_test $(BINDIR)/$(CONFIG)/end2end_test $(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test $(BINDIR)/$(CONFIG)/generic_end2end_test $(BINDIR)/$(CONFIG)/grpc_cli $(BINDIR)/$(CONFIG)/interop_client $(BINDIR)/$(CONFIG)/interop_server $(BINDIR)/$(CONFIG)/interop_test $(BINDIR)/$(CONFIG)/mock_test $(BINDIR)/$(CONFIG)/qps_interarrival_test $(BINDIR)/$(CONFIG)/qps_openloop_test $(BINDIR)/$(CONFIG)/qps_test $(BINDIR)/$(CONFIG)/secure_auth_context_test $(BINDIR)/$(CONFIG)/server_crash_test $(BINDIR)/$(CONFIG)/server_crash_test_client $(BINDIR)/$(CONFIG)/status_test $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/thread_stress_test
 
 test: test_c test_cxx
 
@@ -1582,8 +1582,6 @@ test_c: buildtests_c
 	$(Q) $(BINDIR)/$(CONFIG)/tcp_server_posix_test || ( echo test tcp_server_posix_test failed ; exit 1 )
 	$(E) "[RUN]     Testing time_averaged_stats_test"
 	$(Q) $(BINDIR)/$(CONFIG)/time_averaged_stats_test || ( echo test time_averaged_stats_test failed ; exit 1 )
-	$(E) "[RUN]     Testing time_test"
-	$(Q) $(BINDIR)/$(CONFIG)/time_test || ( echo test time_test failed ; exit 1 )
 	$(E) "[RUN]     Testing timeout_encoding_test"
 	$(Q) $(BINDIR)/$(CONFIG)/timeout_encoding_test || ( echo test timeout_encoding_test failed ; exit 1 )
 	$(E) "[RUN]     Testing timers_test"
@@ -2558,6 +2556,8 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test || ( echo test async_streaming_ping_pong_test failed ; exit 1 )
 	$(E) "[RUN]     Testing async_unary_ping_pong_test"
 	$(Q) $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test || ( echo test async_unary_ping_pong_test failed ; exit 1 )
+	$(E) "[RUN]     Testing auth_property_iterator_test"
+	$(Q) $(BINDIR)/$(CONFIG)/auth_property_iterator_test || ( echo test auth_property_iterator_test failed ; exit 1 )
 	$(E) "[RUN]     Testing channel_arguments_test"
 	$(Q) $(BINDIR)/$(CONFIG)/channel_arguments_test || ( echo test channel_arguments_test failed ; exit 1 )
 	$(E) "[RUN]     Testing cli_call_test"
@@ -2574,6 +2574,8 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/cxx_time_test || ( echo test cxx_time_test failed ; exit 1 )
 	$(E) "[RUN]     Testing end2end_test"
 	$(Q) $(BINDIR)/$(CONFIG)/end2end_test || ( echo test end2end_test failed ; exit 1 )
+	$(E) "[RUN]     Testing fixed_size_thread_pool_test"
+	$(Q) $(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test || ( echo test fixed_size_thread_pool_test failed ; exit 1 )
 	$(E) "[RUN]     Testing generic_end2end_test"
 	$(Q) $(BINDIR)/$(CONFIG)/generic_end2end_test || ( echo test generic_end2end_test failed ; exit 1 )
 	$(E) "[RUN]     Testing interop_test"
@@ -2594,8 +2596,6 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test || ( echo test sync_streaming_ping_pong_test failed ; exit 1 )
 	$(E) "[RUN]     Testing sync_unary_ping_pong_test"
 	$(Q) $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test || ( echo test sync_unary_ping_pong_test failed ; exit 1 )
-	$(E) "[RUN]     Testing thread_pool_test"
-	$(Q) $(BINDIR)/$(CONFIG)/thread_pool_test || ( echo test thread_pool_test failed ; exit 1 )
 	$(E) "[RUN]     Testing thread_stress_test"
 	$(Q) $(BINDIR)/$(CONFIG)/thread_stress_test || ( echo test thread_stress_test failed ; exit 1 )
 
@@ -2674,32 +2674,32 @@ endif
 
 cache.mk::
 	$(E) "[MAKE]    Generating $@"
-	$(Q) echo -e "$(CACHE_MK)" >$@
+	$(Q) echo "$(CACHE_MK)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/gpr.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GPR_PC_FILE)" >$@
+	$(Q) echo "$(GPR_PC_FILE)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GRPC_PC_FILE)" >$@
+	$(Q) echo "$(GRPC_PC_FILE)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_unsecure.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GRPC_UNSECURE_PC_FILE)" >$@
+	$(Q) echo "$(GRPC_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GRPCXX_PC_FILE)" >$@
+	$(Q) echo "$(GRPCXX_PC_FILE)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++_unsecure.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GRPCXX_UNSECURE_PC_FILE)" >$@
+	$(Q) echo "$(GRPCXX_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
 ifeq ($(NO_PROTOC),true)
 $(GENDIR)/examples/pubsub/empty.pb.cc: protoc_dep_error
@@ -3688,6 +3688,7 @@ endif
 LIBGRPC++_SRC = \
     src/cpp/client/secure_channel_arguments.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_create_auth_context.cc \
     src/cpp/server/secure_server_credentials.cc \
@@ -3705,12 +3706,12 @@ LIBGRPC++_SRC = \
     src/cpp/proto/proto_utils.cc \
     src/cpp/server/async_generic_service.cc \
     src/cpp/server/create_default_thread_pool.cc \
+    src/cpp/server/fixed_size_thread_pool.cc \
     src/cpp/server/insecure_server_credentials.cc \
     src/cpp/server/server.cc \
     src/cpp/server/server_builder.cc \
     src/cpp/server/server_context.cc \
     src/cpp/server/server_credentials.cc \
-    src/cpp/server/thread_pool.cc \
     src/cpp/util/byte_buffer.cc \
     src/cpp/util/slice.cc \
     src/cpp/util/status.cc \
@@ -3720,6 +3721,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/async_generic_service.h \
     include/grpc++/async_unary_call.h \
     include/grpc++/auth_context.h \
+    include/grpc++/auth_property_iterator.h \
     include/grpc++/byte_buffer.h \
     include/grpc++/channel_arguments.h \
     include/grpc++/channel_interface.h \
@@ -3729,6 +3731,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/config_protobuf.h \
     include/grpc++/create_channel.h \
     include/grpc++/credentials.h \
+    include/grpc++/fixed_size_thread_pool.h \
     include/grpc++/generic_stub.h \
     include/grpc++/impl/call.h \
     include/grpc++/impl/client_unary_call.h \
@@ -3946,12 +3949,12 @@ LIBGRPC++_UNSECURE_SRC = \
     src/cpp/proto/proto_utils.cc \
     src/cpp/server/async_generic_service.cc \
     src/cpp/server/create_default_thread_pool.cc \
+    src/cpp/server/fixed_size_thread_pool.cc \
     src/cpp/server/insecure_server_credentials.cc \
     src/cpp/server/server.cc \
     src/cpp/server/server_builder.cc \
     src/cpp/server/server_context.cc \
     src/cpp/server/server_credentials.cc \
-    src/cpp/server/thread_pool.cc \
     src/cpp/util/byte_buffer.cc \
     src/cpp/util/slice.cc \
     src/cpp/util/status.cc \
@@ -3961,6 +3964,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/async_generic_service.h \
     include/grpc++/async_unary_call.h \
     include/grpc++/auth_context.h \
+    include/grpc++/auth_property_iterator.h \
     include/grpc++/byte_buffer.h \
     include/grpc++/channel_arguments.h \
     include/grpc++/channel_interface.h \
@@ -3970,6 +3974,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/config_protobuf.h \
     include/grpc++/create_channel.h \
     include/grpc++/credentials.h \
+    include/grpc++/fixed_size_thread_pool.h \
     include/grpc++/generic_stub.h \
     include/grpc++/impl/call.h \
     include/grpc++/impl/client_unary_call.h \
@@ -7536,35 +7541,6 @@ endif
 endif
 
 
-TIME_TEST_SRC = \
-    test/core/support/time_test.c \
-
-TIME_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TIME_TEST_SRC))))
-ifeq ($(NO_SECURE),true)
-
-# You can't build secure targets if you don't have OpenSSL.
-
-$(BINDIR)/$(CONFIG)/time_test: openssl_dep_error
-
-else
-
-$(BINDIR)/$(CONFIG)/time_test: $(TIME_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) $(TIME_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)/time_test
-
-endif
-
-$(OBJDIR)/$(CONFIG)/test/core/support/time_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
-deps_time_test: $(TIME_TEST_OBJS:.o=.dep)
-
-ifneq ($(NO_SECURE),true)
-ifneq ($(NO_DEPS),true)
--include $(TIME_TEST_OBJS:.o=.dep)
-endif
-endif
-
-
 TIMEOUT_ENCODING_TEST_SRC = \
     test/core/transport/chttp2/timeout_encoding_test.c \
 
@@ -7830,6 +7806,46 @@ endif
 endif
 
 
+AUTH_PROPERTY_ITERATOR_TEST_SRC = \
+    test/cpp/common/auth_property_iterator_test.cc \
+
+AUTH_PROPERTY_ITERATOR_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(AUTH_PROPERTY_ITERATOR_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/auth_property_iterator_test: 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)/$(CONFIG)/auth_property_iterator_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/auth_property_iterator_test: $(PROTOBUF_DEP) $(AUTH_PROPERTY_ITERATOR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(AUTH_PROPERTY_ITERATOR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/auth_property_iterator_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/common/auth_property_iterator_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+deps_auth_property_iterator_test: $(AUTH_PROPERTY_ITERATOR_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(AUTH_PROPERTY_ITERATOR_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 CHANNEL_ARGUMENTS_TEST_SRC = \
     test/cpp/client/channel_arguments_test.cc \
 
@@ -8190,6 +8206,46 @@ endif
 endif
 
 
+FIXED_SIZE_THREAD_POOL_TEST_SRC = \
+    test/cpp/server/fixed_size_thread_pool_test.cc \
+
+FIXED_SIZE_THREAD_POOL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(FIXED_SIZE_THREAD_POOL_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test: 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)/$(CONFIG)/fixed_size_thread_pool_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test: $(PROTOBUF_DEP) $(FIXED_SIZE_THREAD_POOL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(FIXED_SIZE_THREAD_POOL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/server/fixed_size_thread_pool_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+deps_fixed_size_thread_pool_test: $(FIXED_SIZE_THREAD_POOL_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(FIXED_SIZE_THREAD_POOL_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 GENERIC_END2END_TEST_SRC = \
     test/cpp/end2end/generic_end2end_test.cc \
 
@@ -9108,46 +9164,6 @@ endif
 endif
 
 
-THREAD_POOL_TEST_SRC = \
-    test/cpp/server/thread_pool_test.cc \
-
-THREAD_POOL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(THREAD_POOL_TEST_SRC))))
-ifeq ($(NO_SECURE),true)
-
-# You can't build secure targets if you don't have OpenSSL.
-
-$(BINDIR)/$(CONFIG)/thread_pool_test: 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)/$(CONFIG)/thread_pool_test: protobuf_dep_error
-
-else
-
-$(BINDIR)/$(CONFIG)/thread_pool_test: $(PROTOBUF_DEP) $(THREAD_POOL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
-	$(E) "[LD]      Linking $@"
-	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(THREAD_POOL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/thread_pool_test
-
-endif
-
-endif
-
-$(OBJDIR)/$(CONFIG)/test/cpp/server/thread_pool_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
-deps_thread_pool_test: $(THREAD_POOL_TEST_OBJS:.o=.dep)
-
-ifneq ($(NO_SECURE),true)
-ifneq ($(NO_DEPS),true)
--include $(THREAD_POOL_TEST_OBJS:.o=.dep)
-endif
-endif
-
-
 THREAD_STRESS_TEST_SRC = \
     test/cpp/end2end/thread_stress_test.cc \
 
diff --git a/README.md b/README.md
index f71ee6a6c17200df78bebc07ac0b75766996cbf8..36d9fa07caf52887263390f7e7cdcd2a5401efc8 100644
--- a/README.md
+++ b/README.md
@@ -39,9 +39,9 @@ Libraries in different languages are in different state of development. We are s
    * Ruby Library: [src/ruby] (src/ruby) : Early adopter ready - Alpha.
    * NodeJS Library: [src/node] (src/node) : Early adopter ready - Alpha.
    * Python Library: [src/python] (src/python) : Early adopter ready - Alpha.
-   * C# Library: [src/csharp] (src/csharp) : Early adopter ready - Alpha.   
+   * C# Library: [src/csharp] (src/csharp) : Early adopter ready - Alpha.
+   * Objective-C Library: [src/objective-c] (src/objective-c): Early adopter ready - Alpha.
    * PHP Library: [src/php] (src/php) : Pre-Alpha.
-   * Objective-C Library: [src/objective-c] (src/objective-c): Pre-Alpha.
 
 #Overview
 
diff --git a/build.json b/build.json
index e21efde74dfd1d77f77a5135404ef85b65df36fc..8fbab98e0b798af79adec3c6c24f6c2f12bfe493 100644
--- a/build.json
+++ b/build.json
@@ -31,6 +31,7 @@
         "include/grpc++/async_generic_service.h",
         "include/grpc++/async_unary_call.h",
         "include/grpc++/auth_context.h",
+        "include/grpc++/auth_property_iterator.h",
         "include/grpc++/byte_buffer.h",
         "include/grpc++/channel_arguments.h",
         "include/grpc++/channel_interface.h",
@@ -40,6 +41,7 @@
         "include/grpc++/config_protobuf.h",
         "include/grpc++/create_channel.h",
         "include/grpc++/credentials.h",
+        "include/grpc++/fixed_size_thread_pool.h",
         "include/grpc++/generic_stub.h",
         "include/grpc++/impl/call.h",
         "include/grpc++/impl/client_unary_call.h",
@@ -69,8 +71,7 @@
       ],
       "headers": [
         "src/cpp/client/channel.h",
-        "src/cpp/common/create_auth_context.h",
-        "src/cpp/server/thread_pool.h"
+        "src/cpp/common/create_auth_context.h"
       ],
       "src": [
         "src/cpp/client/channel.cc",
@@ -87,12 +88,12 @@
         "src/cpp/proto/proto_utils.cc",
         "src/cpp/server/async_generic_service.cc",
         "src/cpp/server/create_default_thread_pool.cc",
+        "src/cpp/server/fixed_size_thread_pool.cc",
         "src/cpp/server/insecure_server_credentials.cc",
         "src/cpp/server/server.cc",
         "src/cpp/server/server_builder.cc",
         "src/cpp/server/server_context.cc",
         "src/cpp/server/server_credentials.cc",
-        "src/cpp/server/thread_pool.cc",
         "src/cpp/util/byte_buffer.cc",
         "src/cpp/util/slice.cc",
         "src/cpp/util/status.cc",
@@ -570,6 +571,7 @@
       "src": [
         "src/cpp/client/secure_channel_arguments.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_create_auth_context.cc",
         "src/cpp/server/secure_server_credentials.cc"
@@ -1785,20 +1787,6 @@
         "gpr"
       ]
     },
-    {
-      "name": "time_test",
-      "build": "test",
-      "language": "c",
-      "src": [
-        "test/core/support/time_test.c"
-      ],
-      "deps": [
-        "grpc_test_util",
-        "grpc",
-        "gpr_test_util",
-        "gpr"
-      ]
-    },
     {
       "name": "timeout_encoding_test",
       "build": "test",
@@ -1919,6 +1907,19 @@
         "gpr"
       ]
     },
+    {
+      "name": "auth_property_iterator_test",
+      "build": "test",
+      "language": "c++",
+      "src": [
+        "test/cpp/common/auth_property_iterator_test.cc"
+      ],
+      "deps": [
+        "grpc++",
+        "grpc",
+        "gpr"
+      ]
+    },
     {
       "name": "channel_arguments_test",
       "build": "test",
@@ -2055,6 +2056,21 @@
         "gpr"
       ]
     },
+    {
+      "name": "fixed_size_thread_pool_test",
+      "build": "test",
+      "language": "c++",
+      "src": [
+        "test/cpp/server/fixed_size_thread_pool_test.cc"
+      ],
+      "deps": [
+        "grpc_test_util",
+        "grpc++",
+        "grpc",
+        "gpr_test_util",
+        "gpr"
+      ]
+    },
     {
       "name": "generic_end2end_test",
       "build": "test",
@@ -2461,21 +2477,6 @@
         "gpr"
       ]
     },
-    {
-      "name": "thread_pool_test",
-      "build": "test",
-      "language": "c++",
-      "src": [
-        "test/cpp/server/thread_pool_test.cc"
-      ],
-      "deps": [
-        "grpc_test_util",
-        "grpc++",
-        "grpc",
-        "gpr_test_util",
-        "gpr"
-      ]
-    },
     {
       "name": "thread_stress_test",
       "build": "test",
diff --git a/doc/interop-test-descriptions.md b/doc/interop-test-descriptions.md
index c1b3394596bc510fc681a46dbef056180a21adc7..3ee5d0f0320ce8110eee73ca6eedf4a04a527f1a 100644
--- a/doc/interop-test-descriptions.md
+++ b/doc/interop-test-descriptions.md
@@ -396,14 +396,23 @@ Asserts:
 
 Similar to the other auth tests, this test is only for cloud-to-prod path.
 
-This test verifies unary calls succeed in sending messages using an OAuth2 token that is obtained OOB.  For the purpose of the test, the OAuth2 token is actually obtained from the service account credentials via the language-specific authorization library.  
+This test verifies unary calls succeed in sending messages using an OAuth2 token
+that is obtained out of band. For the purpose of the test, the OAuth2 token is
+actually obtained from the service account credentials via the
+language-specific authorization library.
 
-The difference between this test and the other auth tests is that rather than configuring the test client with ServiceAccountCredentials directly, the test first uses the authorization library to obtain an authorization token.
+The difference between this test and the other auth tests is that rather than
+configuring the test client with ServiceAccountCredentials directly, the test
+first uses the authorization library to obtain an authorization token.
 
 The test
-- uses the flag`--service_account_key_file` with the path to a json key file
-downloaded from https://console.developers.google.com. Alternately, if using a usable auth implementation, it may specify the file location in the environment variable GOOGLE_APPLICATION_CREDENTIALS
-- uses the flag `--oauth_scope` for the oauth scope.  For testing against grpc-test.sandbox.google.com, "https://www.googleapis.com/auth/xapi.zoo" should be passed as the `--oauth_scope`.
+- uses the flag `--service_account_key_file` with the path to a json key file
+downloaded from https://console.developers.google.com. Alternately, if using a
+usable auth implementation, it may specify the file location in the environment
+variable GOOGLE_APPLICATION_CREDENTIALS
+- uses the flag `--oauth_scope` for the oauth scope.  For testing against
+grpc-test.sandbox.google.com, "https://www.googleapis.com/auth/xapi.zoo" should
+be passed as the `--oauth_scope`.
 
 Server features:
 * [UnaryCall][]
@@ -412,16 +421,12 @@ Server features:
 * [Echo OAuth Scope][]
 
 Procedure:
- 1. Client use the auth library to obtain an authorization token
- 2. Client calls UnaryCall, attaching the authorization token obtained in step1, with the following message
+ 1. Client uses the auth library to obtain an authorization token
+ 2. Client configures the channel to use AccessTokenCredentials with the access token obtained in step 1.
+ 3. Client calls UnaryCall with the following message
 
     ```
     {
-      response_type: COMPRESSABLE
-      response_size: 314159
-      payload:{
-        body: 271828 bytes of zeros
-      }
       fill_username: true
       fill_oauth_scope: true
     }
@@ -429,11 +434,53 @@ Procedure:
     
 Asserts:
 * call was successful
-* received SimpleResponse.username is in the json key file used by the auth library to obtain the authorization token
+* received SimpleResponse.username is in the json key file used by the auth
+library to obtain the authorization token
+* received SimpleResponse.oauth_scope is in `--oauth_scope`
+
+### per_rpc_creds
+
+Similar to the other auth tests, this test is only for cloud-to-prod path.
+
+This test verifies unary calls succeed in sending messages using an OAuth2 token
+that is obtained out of band. For the purpose of the test, the OAuth2 token is
+actually obtained from the service account credentials via the
+language-specific authorization library.
+
+The test
+- uses the flag `--service_account_key_file` with the path to a json key file
+downloaded from https://console.developers.google.com. Alternately, if using a
+usable auth implementation, it may specify the file location in the environment
+variable GOOGLE_APPLICATION_CREDENTIALS
+- uses the flag `--oauth_scope` for the oauth scope.  For testing against
+grpc-test.sandbox.google.com, "https://www.googleapis.com/auth/xapi.zoo" should
+be passed as the `--oauth_scope`.
+
+Server features:
+* [UnaryCall][]
+* [Compressable Payload][]
+* [Echo Authenticated Username][]
+* [Echo OAuth Scope][]
+
+Procedure:
+ 1. Client uses the auth library to obtain an authorization token
+ 2. Client configures the channel with just SSL credentials.
+ 3. Client calls UnaryCall, setting per-call credentials to
+ AccessTokenCredentials with the access token obtained in step 1. The request is
+ the following message
+
+    ```
+    {
+      fill_username: true
+      fill_oauth_scope: true
+    }
+    ```
+    
+Asserts:
+* call was successful
+* received SimpleResponse.username is in the json key file used by the auth
+library to obtain the authorization token
 * received SimpleResponse.oauth_scope is in `--oauth_scope`
-* response payload body is 314159 bytes in size
-* clients are free to assert that the response payload body contents are zero
-  and comparing the entire response message against a golden response
 
 
 ### Metadata (TODO: fix name)
diff --git a/include/grpc++/auth_context.h b/include/grpc++/auth_context.h
index 158f8e3f0789b81e59f5d98b1bd9c5d291c9d596..c42105b927c05a3063f35a86e90d062774072b4b 100644
--- a/include/grpc++/auth_context.h
+++ b/include/grpc++/auth_context.h
@@ -36,14 +36,13 @@
 
 #include <vector>
 
+#include <grpc++/auth_property_iterator.h>
 #include <grpc++/config.h>
 
 namespace grpc {
 
 class AuthContext {
  public:
-  typedef std::pair<grpc::string, grpc::string> Property;
-
   virtual ~AuthContext() {}
 
   // A peer identity, in general is one or more properties (in which case they
@@ -54,6 +53,10 @@ class AuthContext {
   // Returns all the property values with the given name.
   virtual std::vector<grpc::string> FindPropertyValues(
       const grpc::string& name) const = 0;
+
+  // Iteration over all the properties.
+  virtual AuthPropertyIterator begin() const = 0;
+  virtual AuthPropertyIterator end() const = 0;
 };
 
 }  // namespace grpc
diff --git a/include/grpc++/auth_property_iterator.h b/include/grpc++/auth_property_iterator.h
new file mode 100644
index 0000000000000000000000000000000000000000..c7870c46be13e1a858be0b30eeac277b6c66fe85
--- /dev/null
+++ b/include/grpc++/auth_property_iterator.h
@@ -0,0 +1,77 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#ifndef GRPCXX_AUTH_PROPERTY_ITERATOR_H
+#define GRPCXX_AUTH_PROPERTY_ITERATOR_H
+
+#include <iterator>
+#include <vector>
+
+#include <grpc++/config.h>
+
+struct grpc_auth_context;
+struct grpc_auth_property;
+struct grpc_auth_property_iterator;
+
+namespace grpc {
+class SecureAuthContext;
+
+typedef std::pair<grpc::string, grpc::string> AuthProperty;
+
+class AuthPropertyIterator
+    : public std::iterator<std::input_iterator_tag, const AuthProperty> {
+ public:
+  ~AuthPropertyIterator();
+  AuthPropertyIterator& operator++();
+  AuthPropertyIterator operator++(int);
+  bool operator==(const AuthPropertyIterator& rhs) const;
+  bool operator!=(const AuthPropertyIterator& rhs) const;
+  const AuthProperty operator*();
+
+ protected:
+  AuthPropertyIterator();
+  AuthPropertyIterator(const grpc_auth_property* property,
+                       const grpc_auth_property_iterator* iter);
+ private:
+  friend class SecureAuthContext;
+  const grpc_auth_property* property_;
+  // The following items form a grpc_auth_property_iterator.
+  const grpc_auth_context* ctx_;
+  size_t index_;
+  const char* name_;
+};
+
+}  // namespace grpc
+
+ #endif  // GRPCXX_AUTH_PROPERTY_ITERATOR_H
+
diff --git a/include/grpc++/completion_queue.h b/include/grpc++/completion_queue.h
index f32cbff06cc93ff63dc32c26ce5c9339ae2f1f00..0523ab6a0e35896ce74e9e69b5f4ede61a29f31b 100644
--- a/include/grpc++/completion_queue.h
+++ b/include/grpc++/completion_queue.h
@@ -105,7 +105,8 @@ class CompletionQueue : public GrpcLibrary {
   // Returns false if the queue is ready for destruction, true if event
 
   bool Next(void** tag, bool* ok) {
-    return (AsyncNextInternal(tag, ok, gpr_inf_future) != SHUTDOWN);
+    return (AsyncNextInternal(tag, ok, gpr_inf_future(GPR_CLOCK_REALTIME)) !=
+            SHUTDOWN);
   }
 
   // Shutdown has to be called, and the CompletionQueue can only be
diff --git a/src/cpp/server/thread_pool.h b/include/grpc++/fixed_size_thread_pool.h
similarity index 83%
rename from src/cpp/server/thread_pool.h
rename to include/grpc++/fixed_size_thread_pool.h
index 3b70249bf9af9e6d72e4c60f6c750c798faa5ef5..307e1661427bb24e8de8b37b3643766048df2d35 100644
--- a/src/cpp/server/thread_pool.h
+++ b/include/grpc++/fixed_size_thread_pool.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_INTERNAL_CPP_SERVER_THREAD_POOL_H
-#define GRPC_INTERNAL_CPP_SERVER_THREAD_POOL_H
+#ifndef GRPCXX_FIXED_SIZE_THREAD_POOL_H
+#define GRPCXX_FIXED_SIZE_THREAD_POOL_H
 
 #include <grpc++/config.h>
 
@@ -45,12 +45,12 @@
 
 namespace grpc {
 
-class ThreadPool GRPC_FINAL : public ThreadPoolInterface {
+class FixedSizeThreadPool GRPC_FINAL : public ThreadPoolInterface {
  public:
-  explicit ThreadPool(int num_threads);
-  ~ThreadPool();
+  explicit FixedSizeThreadPool(int num_threads);
+  ~FixedSizeThreadPool();
 
-  void ScheduleCallback(const std::function<void()>& callback) GRPC_OVERRIDE;
+  void Add(const std::function<void()>& callback) GRPC_OVERRIDE;
 
  private:
   grpc::mutex mu_;
@@ -62,8 +62,6 @@ class ThreadPool GRPC_FINAL : public ThreadPoolInterface {
   void ThreadFunc();
 };
 
-ThreadPoolInterface* CreateDefaultThreadPool();
-
 }  // namespace grpc
 
-#endif  // GRPC_INTERNAL_CPP_SERVER_THREAD_POOL_H
+#endif  // GRPCXX_FIXED_SIZE_THREAD_POOL_H
diff --git a/include/grpc++/server_context.h b/include/grpc++/server_context.h
index 2123d03291c67df1b76157624ecf8f3e45bd4c5f..6f094eda3d3ccf4a7fd0000d4eeefbe7726080ad 100644
--- a/include/grpc++/server_context.h
+++ b/include/grpc++/server_context.h
@@ -76,6 +76,10 @@ class CallOpBuffer;
 class CompletionQueue;
 class Server;
 
+namespace testing {
+class InteropContextInspector;
+}  // namespace testing
+
 // Interface of server side rpc context.
 class ServerContext {
  public:
@@ -93,7 +97,7 @@ class ServerContext {
   void AddInitialMetadata(const grpc::string& key, const grpc::string& value);
   void AddTrailingMetadata(const grpc::string& key, const grpc::string& value);
 
-  bool IsCancelled();
+  bool IsCancelled() const;
 
   const std::multimap<grpc::string, grpc::string>& client_metadata() {
     return client_metadata_;
@@ -102,6 +106,7 @@ class ServerContext {
   std::shared_ptr<const AuthContext> auth_context() const;
 
  private:
+  friend class ::grpc::testing::InteropContextInspector;
   friend class ::grpc::Server;
   template <class W, class R>
   friend class ::grpc::ServerAsyncReader;
diff --git a/include/grpc++/thread_pool_interface.h b/include/grpc++/thread_pool_interface.h
index ead307f6a2f588c283f082c3ef3abe5f82699280..d080b31dcc550ccc30b00e20b73bee2d9bcedd7c 100644
--- a/include/grpc++/thread_pool_interface.h
+++ b/include/grpc++/thread_pool_interface.h
@@ -44,9 +44,11 @@ class ThreadPoolInterface {
   virtual ~ThreadPoolInterface() {}
 
   // Schedule the given callback for execution.
-  virtual void ScheduleCallback(const std::function<void()>& callback) = 0;
+  virtual void Add(const std::function<void()>& callback) = 0;
 };
 
+ThreadPoolInterface* CreateDefaultThreadPool();
+
 }  // namespace grpc
 
 #endif  // GRPCXX_THREAD_POOL_INTERFACE_H
diff --git a/include/grpc/support/time.h b/include/grpc/support/time.h
index a5c947dfc8bd3e4edd04cce99b40e8039b16dd5d..3f375f6ecd5387165571e0db2bc405f7a48de6aa 100644
--- a/include/grpc/support/time.h
+++ b/include/grpc/support/time.h
@@ -45,15 +45,30 @@
 extern "C" {
 #endif
 
+/* The clocks we support. */
+typedef enum {
+  /* Monotonic clock. Epoch undefined. Always moves forwards. */
+  GPR_CLOCK_MONOTONIC = 0,
+  /* Realtime clock. May jump forwards or backwards. Settable by
+     the system administrator. Has its epoch at 0:00:00 UTC 1 Jan 1970. */
+  GPR_CLOCK_REALTIME,
+  /* Unmeasurable clock type: no base, created by taking the difference
+     between two times */
+  GPR_TIMESPAN
+} gpr_clock_type;
+
 typedef struct gpr_timespec {
   time_t tv_sec;
   int tv_nsec;
+  /** Against which clock was this time measured? (or GPR_TIMESPAN if
+      this is a relative time meaure) */
+  gpr_clock_type clock_type;
 } gpr_timespec;
 
 /* Time constants. */
-extern const gpr_timespec gpr_time_0;     /* The zero time interval. */
-extern const gpr_timespec gpr_inf_future; /* The far future */
-extern const gpr_timespec gpr_inf_past;   /* The far past. */
+gpr_timespec gpr_time_0(gpr_clock_type type);     /* The zero time interval. */
+gpr_timespec gpr_inf_future(gpr_clock_type type); /* The far future */
+gpr_timespec gpr_inf_past(gpr_clock_type type);   /* The far past. */
 
 #define GPR_MS_PER_SEC 1000
 #define GPR_US_PER_SEC 1000000
@@ -62,15 +77,6 @@ extern const gpr_timespec gpr_inf_past;   /* The far past. */
 #define GPR_NS_PER_US 1000
 #define GPR_US_PER_MS 1000
 
-/* The clocks we support. */
-typedef enum {
-  /* Monotonic clock. Epoch undefined. Always moves forwards. */
-  GPR_CLOCK_MONOTONIC = 0,
-  /* Realtime clock. May jump forwards or backwards. Settable by
-     the system administrator. Has its epoch at 0:00:00 UTC 1 Jan 1970. */
-  GPR_CLOCK_REALTIME
-} gpr_clock_type;
-
 /* initialize time subsystem */
 void gpr_time_init(void);
 
@@ -90,12 +96,12 @@ gpr_timespec gpr_time_sub(gpr_timespec a, gpr_timespec b);
 
 /* Return a timespec representing a given number of time units. LONG_MIN is
    interpreted as gpr_inf_past, and LONG_MAX as gpr_inf_future.  */
-gpr_timespec gpr_time_from_micros(long x);
-gpr_timespec gpr_time_from_nanos(long x);
-gpr_timespec gpr_time_from_millis(long x);
-gpr_timespec gpr_time_from_seconds(long x);
-gpr_timespec gpr_time_from_minutes(long x);
-gpr_timespec gpr_time_from_hours(long x);
+gpr_timespec gpr_time_from_micros(long x, gpr_clock_type clock_type);
+gpr_timespec gpr_time_from_nanos(long x, gpr_clock_type clock_type);
+gpr_timespec gpr_time_from_millis(long x, gpr_clock_type clock_type);
+gpr_timespec gpr_time_from_seconds(long x, gpr_clock_type clock_type);
+gpr_timespec gpr_time_from_minutes(long x, gpr_clock_type clock_type);
+gpr_timespec gpr_time_from_hours(long x, gpr_clock_type clock_type);
 
 gpr_int32 gpr_time_to_millis(gpr_timespec timespec);
 
diff --git a/include/grpc/support/useful.h b/include/grpc/support/useful.h
index e1ce0455c6a7d89fcbd9c10dc959500be975e506..384261159047f74d9bde4b9d659fc7f3e0993774 100644
--- a/include/grpc/support/useful.h
+++ b/include/grpc/support/useful.h
@@ -52,4 +52,24 @@
     b = x;               \
   } while (0)
 
+/** Set the \a n-th bit of \a i (a mutable pointer). */
+#define GPR_BITSET(i, n) ((*(i)) |= (1u << (n)))
+
+/** Clear the \a n-th bit of \a i (a mutable pointer). */
+#define GPR_BITCLEAR(i, n) ((*(i)) &= ~(1u << (n)))
+
+/** Get the \a n-th bit of \a i */
+#define GPR_BITGET(i, n) (((i) & (1u << (n))) != 0)
+
+#define GPR_INTERNAL_HEXDIGIT_BITCOUNT(x)                        \
+  ((x) - (((x) >> 1) & 0x77777777) - (((x) >> 2) & 0x33333333) - \
+   (((x) >> 3) & 0x11111111))
+
+/** Returns number of bits set in bitset \a i */
+#define GPR_BITCOUNT(i)                          \
+  (((GPR_INTERNAL_HEXDIGIT_BITCOUNT(i) +         \
+     (GPR_INTERNAL_HEXDIGIT_BITCOUNT(i) >> 4)) & \
+    0x0f0f0f0f) %                                \
+   255)
+
 #endif  /* GRPC_SUPPORT_USEFUL_H */
diff --git a/src/compiler/csharp_generator.cc b/src/compiler/csharp_generator.cc
index ccb0b688b6b4f63eba9524d36394c8291f6fa7e1..1910e9bd2dee7dc241bb49a4bba3061419df8342 100644
--- a/src/compiler/csharp_generator.cc
+++ b/src/compiler/csharp_generator.cc
@@ -257,7 +257,7 @@ void GenerateStaticMethodField(Printer* out, const MethodDescriptor *method) {
 }
 
 void GenerateClientInterface(Printer* out, const ServiceDescriptor *service) {
-  out->Print("// client-side stub interface\n");
+  out->Print("// client interface\n");
   out->Print("public interface $name$\n", "name",
              GetClientInterfaceName(service));
   out->Print("{\n");
@@ -269,7 +269,7 @@ void GenerateClientInterface(Printer* out, const ServiceDescriptor *service) {
     if (method_type == METHODTYPE_NO_STREAMING) {
       // unary calls have an extra synchronous stub method
       out->Print(
-          "$response$ $methodname$($request$ request, CancellationToken token = default(CancellationToken));\n",
+          "$response$ $methodname$($request$ request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));\n",
           "methodname", method->name(), "request",
           GetClassName(method->input_type()), "response",
           GetClassName(method->output_type()));
@@ -280,7 +280,7 @@ void GenerateClientInterface(Printer* out, const ServiceDescriptor *service) {
       method_name += "Async";  // prevent name clash with synchronous method.
     }
     out->Print(
-        "$returntype$ $methodname$($request_maybe$CancellationToken token = default(CancellationToken));\n",
+        "$returntype$ $methodname$($request_maybe$Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));\n",
         "methodname", method_name, "request_maybe",
         GetMethodRequestParamMaybe(method), "returntype",
         GetMethodReturnTypeClient(method));
@@ -312,7 +312,7 @@ void GenerateServerInterface(Printer* out, const ServiceDescriptor *service) {
 void GenerateClientStub(Printer* out, const ServiceDescriptor *service) {
   out->Print("// client stub\n");
   out->Print(
-      "public class $name$ : AbstractStub<$name$, StubConfiguration>, $interface$\n",
+      "public class $name$ : ClientBase, $interface$\n",
       "name", GetClientClassName(service), "interface",
       GetClientInterfaceName(service));
   out->Print("{\n");
@@ -320,12 +320,7 @@ void GenerateClientStub(Printer* out, const ServiceDescriptor *service) {
 
   // constructors
   out->Print(
-      "public $name$(Channel channel) : this(channel, StubConfiguration.Default)\n",
-      "name", GetClientClassName(service));
-  out->Print("{\n");
-  out->Print("}\n");
-  out->Print(
-      "public $name$(Channel channel, StubConfiguration config) : base(channel, config)\n",
+      "public $name$(Channel channel) : base(channel)\n",
       "name", GetClientClassName(service));
   out->Print("{\n");
   out->Print("}\n");
@@ -337,16 +332,16 @@ void GenerateClientStub(Printer* out, const ServiceDescriptor *service) {
     if (method_type == METHODTYPE_NO_STREAMING) {
       // unary calls have an extra synchronous stub method
       out->Print(
-          "public $response$ $methodname$($request$ request, CancellationToken token = default(CancellationToken))\n",
+          "public $response$ $methodname$($request$ request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))\n",
           "methodname", method->name(), "request",
           GetClassName(method->input_type()), "response",
           GetClassName(method->output_type()));
       out->Print("{\n");
       out->Indent();
-      out->Print("var call = CreateCall($servicenamefield$, $methodfield$);\n",
+      out->Print("var call = CreateCall($servicenamefield$, $methodfield$, headers);\n",
                  "servicenamefield", GetServiceNameFieldName(), "methodfield",
                  GetMethodFieldName(method));
-      out->Print("return Calls.BlockingUnaryCall(call, request, token);\n");
+      out->Print("return Calls.BlockingUnaryCall(call, request, cancellationToken);\n");
       out->Outdent();
       out->Print("}\n");
     }
@@ -356,28 +351,28 @@ void GenerateClientStub(Printer* out, const ServiceDescriptor *service) {
       method_name += "Async";  // prevent name clash with synchronous method.
     }
     out->Print(
-        "public $returntype$ $methodname$($request_maybe$CancellationToken token = default(CancellationToken))\n",
+        "public $returntype$ $methodname$($request_maybe$Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))\n",
         "methodname", method_name, "request_maybe",
         GetMethodRequestParamMaybe(method), "returntype",
         GetMethodReturnTypeClient(method));
     out->Print("{\n");
     out->Indent();
-    out->Print("var call = CreateCall($servicenamefield$, $methodfield$);\n",
+    out->Print("var call = CreateCall($servicenamefield$, $methodfield$, headers);\n",
                "servicenamefield", GetServiceNameFieldName(), "methodfield",
                GetMethodFieldName(method));
     switch (GetMethodType(method)) {
       case METHODTYPE_NO_STREAMING:
-        out->Print("return Calls.AsyncUnaryCall(call, request, token);\n");
+        out->Print("return Calls.AsyncUnaryCall(call, request, cancellationToken);\n");
         break;
       case METHODTYPE_CLIENT_STREAMING:
-        out->Print("return Calls.AsyncClientStreamingCall(call, token);\n");
+        out->Print("return Calls.AsyncClientStreamingCall(call, cancellationToken);\n");
         break;
       case METHODTYPE_SERVER_STREAMING:
         out->Print(
-            "return Calls.AsyncServerStreamingCall(call, request, token);\n");
+            "return Calls.AsyncServerStreamingCall(call, request, cancellationToken);\n");
         break;
       case METHODTYPE_BIDI_STREAMING:
-        out->Print("return Calls.AsyncDuplexStreamingCall(call, token);\n");
+        out->Print("return Calls.AsyncDuplexStreamingCall(call, cancellationToken);\n");
         break;
       default:
         GOOGLE_LOG(FATAL)<< "Can't get here.";
@@ -423,9 +418,9 @@ void GenerateBindServiceMethod(Printer* out, const ServiceDescriptor *service) {
 }
 
 void GenerateNewStubMethods(Printer* out, const ServiceDescriptor *service) {
-  out->Print("// creates a new client stub\n");
-  out->Print("public static $interface$ NewStub(Channel channel)\n",
-             "interface", GetClientInterfaceName(service));
+  out->Print("// creates a new client\n");
+  out->Print("public static $classname$ NewClient(Channel channel)\n",
+             "classname", GetClientClassName(service));
   out->Print("{\n");
   out->Indent();
   out->Print("return new $classname$(channel);\n", "classname",
@@ -433,17 +428,6 @@ void GenerateNewStubMethods(Printer* out, const ServiceDescriptor *service) {
   out->Outdent();
   out->Print("}\n");
   out->Print("\n");
-
-  out->Print("// creates a new client stub\n");
-  out->Print(
-      "public static $interface$ NewStub(Channel channel, StubConfiguration config)\n",
-      "interface", GetClientInterfaceName(service));
-  out->Print("{\n");
-  out->Indent();
-  out->Print("return new $classname$(channel, config);\n", "classname",
-             GetClientClassName(service));
-  out->Outdent();
-  out->Print("}\n");
 }
 
 void GenerateService(Printer* out, const ServiceDescriptor *service) {
diff --git a/src/compiler/objective_c_generator.cc b/src/compiler/objective_c_generator.cc
index 2a74a3b34093ff67fecb368a37c06cde559ed794..711d0d5870968835eb6679fa81a50a51e0b2d02c 100644
--- a/src/compiler/objective_c_generator.cc
+++ b/src/compiler/objective_c_generator.cc
@@ -67,7 +67,7 @@ void PrintMethodSignature(Printer *printer, const MethodDescriptor *method,
 
   printer->Print(vars, "- ($return_type$)$method_name$With");
   if (method->client_streaming()) {
-    printer->Print("RequestsWriter:(id<GRXWriter>)requestWriter");
+    printer->Print("RequestsWriter:(GRXWriter *)requestWriter");
   } else {
     printer->Print(vars, "Request:($request_class$ *)request");
   }
diff --git a/src/core/channel/client_channel.c b/src/core/channel/client_channel.c
index f890f99237e88bc8eb97548a32158792dbb1911a..10e01ebbb4f7425b72ec18777ffcacc1fb96899a 100644
--- a/src/core/channel/client_channel.c
+++ b/src/core/channel/client_channel.c
@@ -132,7 +132,7 @@ static void handle_op_after_cancellation(grpc_call_element *elem,
     mdb.list.head = &calld->status;
     mdb.list.tail = &calld->details;
     mdb.garbage.head = mdb.garbage.tail = NULL;
-    mdb.deadline = gpr_inf_future;
+    mdb.deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
     grpc_sopb_add_metadata(op->recv_ops, mdb);
     *op->recv_state = GRPC_STREAM_CLOSED;
     op->on_done_recv->cb(op->on_done_recv->cb_arg, 1);
@@ -518,7 +518,7 @@ static void init_call_elem(grpc_call_element *elem,
   gpr_mu_init(&calld->mu_state);
   calld->elem = elem;
   calld->state = CALL_CREATED;
-  calld->deadline = gpr_inf_future;
+  calld->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
 }
 
 /* Destructor for call_data */
diff --git a/src/core/client_config/lb_policies/pick_first.h b/src/core/client_config/lb_policies/pick_first.h
index 94c2a9f0c75d55dd74532529f933566ef136656c..31394985e5e3cb636d6d0ee091ff5a16195d638b 100644
--- a/src/core/client_config/lb_policies/pick_first.h
+++ b/src/core/client_config/lb_policies/pick_first.h
@@ -36,6 +36,8 @@
 
 #include "src/core/client_config/lb_policy.h"
 
+/** Returns a load balancing policy instance that picks up the first subchannel
+ *  from \a subchannels to succesfully connect */
 grpc_lb_policy *grpc_create_pick_first_lb_policy(grpc_subchannel **subchannels,
                                                  size_t num_subchannels);
 
diff --git a/src/core/client_config/subchannel.c b/src/core/client_config/subchannel.c
index 8cdad1015f6425ccfd66995bda17367c61d0e461..35f172683a4150cd2712ed4e7890b936116135e6 100644
--- a/src/core/client_config/subchannel.c
+++ b/src/core/client_config/subchannel.c
@@ -302,7 +302,7 @@ static void continue_connect(grpc_subchannel *c) {
 static void start_connect(grpc_subchannel *c) {
   gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME);
   c->next_attempt = now;
-  c->backoff_delta = gpr_time_from_seconds(1);
+  c->backoff_delta = gpr_time_from_seconds(1, GPR_TIMESPAN);
 
   continue_connect(c);
 }
diff --git a/src/core/client_config/uri_parser.c b/src/core/client_config/uri_parser.c
index 776a255923134d13aa4d80b25128fc01c31d3eb4..410a61c8cf32634807127867d5acff2c8e7e7936 100644
--- a/src/core/client_config/uri_parser.c
+++ b/src/core/client_config/uri_parser.c
@@ -98,7 +98,7 @@ grpc_uri *grpc_uri_parse(const char *uri_text, int suppress_errors) {
 
   if (uri_text[scheme_end + 1] == '/' && uri_text[scheme_end + 2] == '/') {
     authority_begin = scheme_end + 3;
-    for (i = authority_begin; uri_text[i] != 0; i++) {
+    for (i = authority_begin; uri_text[i] != 0 && authority_end == -1; i++) {
       if (uri_text[i] == '/') {
         authority_end = i;
       }
diff --git a/src/core/httpcli/httpcli.c b/src/core/httpcli/httpcli.c
index 3f5557e08ee8d62eb4341812407912c49bfc14cc..65997d5f44b34932b53dc5090eff9e8e255c005d 100644
--- a/src/core/httpcli/httpcli.c
+++ b/src/core/httpcli/httpcli.c
@@ -165,6 +165,7 @@ static void start_write(internal_request *req) {
 
 static void on_secure_transport_setup_done(void *rp,
                                            grpc_security_status status,
+                                           grpc_endpoint *wrapped_endpoint,
                                            grpc_endpoint *secure_endpoint) {
   internal_request *req = rp;
   if (status != GRPC_SECURITY_OK) {
diff --git a/src/core/iomgr/alarm.c b/src/core/iomgr/alarm.c
index 5860834de3f32b317cc8dbd0308e755fe7869155..5b9a37e5ddcc4a8482c44f779da8e643d120aca3 100644
--- a/src/core/iomgr/alarm.c
+++ b/src/core/iomgr/alarm.c
@@ -102,7 +102,8 @@ void grpc_alarm_list_init(gpr_timespec now) {
 
 void grpc_alarm_list_shutdown(void) {
   int i;
-  while (run_some_expired_alarms(NULL, gpr_inf_future, NULL, 0))
+  while (run_some_expired_alarms(NULL, gpr_inf_future(GPR_CLOCK_REALTIME), NULL,
+                                 0))
     ;
   for (i = 0; i < NUM_SHARDS; i++) {
     shard_type *shard = &g_shards[i];
@@ -127,6 +128,7 @@ static gpr_timespec dbl_to_ts(double d) {
   gpr_timespec ts;
   ts.tv_sec = d;
   ts.tv_nsec = 1e9 * (d - ts.tv_sec);
+  ts.clock_type = GPR_TIMESPAN;
   return ts;
 }
 
diff --git a/src/core/iomgr/iocp_windows.c b/src/core/iomgr/iocp_windows.c
index 3d3a193d00d9abd4a83edf8c764b15f30fe57c52..8741241fb8e19c804f0df9bc3d2c28173be5954c 100644
--- a/src/core/iomgr/iocp_windows.c
+++ b/src/core/iomgr/iocp_windows.c
@@ -157,7 +157,7 @@ void grpc_iocp_shutdown(void) {
   BOOL success;
   gpr_event_set(&g_shutdown_iocp, (void *)1);
   grpc_iocp_kick();
-  gpr_event_wait(&g_iocp_done, gpr_inf_future);
+  gpr_event_wait(&g_iocp_done, gpr_inf_future(GPR_CLOCK_REALTIME));
   success = CloseHandle(g_iocp);
   GPR_ASSERT(success);
 }
diff --git a/src/core/iomgr/iomgr.c b/src/core/iomgr/iomgr.c
index cca92d3b32d987f147f219916fced4e521e4ed50..0244f689b1a1c1308261fa98246d38ebf03e87e3 100644
--- a/src/core/iomgr/iomgr.c
+++ b/src/core/iomgr/iomgr.c
@@ -57,9 +57,9 @@ static grpc_iomgr_object g_root_object;
 static void background_callback_executor(void *ignored) {
   gpr_mu_lock(&g_mu);
   while (!g_shutdown) {
-    gpr_timespec deadline = gpr_inf_future;
-    gpr_timespec short_deadline =
-        gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(100));
+    gpr_timespec deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
+    gpr_timespec short_deadline = gpr_time_add(
+        gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(100, GPR_TIMESPAN));
     if (g_cbs_head) {
       grpc_iomgr_closure *closure = g_cbs_head;
       g_cbs_head = closure->next;
@@ -110,8 +110,8 @@ static size_t count_objects(void) {
 void grpc_iomgr_shutdown(void) {
   grpc_iomgr_object *obj;
   grpc_iomgr_closure *closure;
-  gpr_timespec shutdown_deadline =
-      gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(10));
+  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);
 
   gpr_mu_lock(&g_mu);
@@ -119,7 +119,7 @@ void grpc_iomgr_shutdown(void) {
   while (g_cbs_head != NULL || g_root_object.next != &g_root_object) {
     if (gpr_time_cmp(
             gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), last_warning_time),
-            gpr_time_from_seconds(1)) >= 0) {
+            gpr_time_from_seconds(1, GPR_TIMESPAN)) >= 0) {
       if (g_cbs_head != NULL && g_root_object.next != &g_root_object) {
         gpr_log(GPR_DEBUG,
                 "Waiting for %d iomgr objects to be destroyed and executing "
@@ -145,14 +145,14 @@ void grpc_iomgr_shutdown(void) {
       } while (g_cbs_head);
       continue;
     }
-    if (grpc_alarm_check(&g_mu, gpr_inf_future, NULL)) {
+    if (grpc_alarm_check(&g_mu, gpr_inf_future(GPR_CLOCK_REALTIME), NULL)) {
       gpr_log(GPR_DEBUG, "got late alarm");
       continue;
     }
     if (g_root_object.next != &g_root_object) {
       int timeout = 0;
-      gpr_timespec short_deadline =
-          gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(100));
+      gpr_timespec short_deadline = gpr_time_add(
+          gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(100, GPR_TIMESPAN));
       while (gpr_cv_wait(&g_rcv, &g_mu, short_deadline) && g_cbs_head == NULL) {
         if (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), shutdown_deadline) > 0) {
           timeout = 1;
@@ -174,7 +174,8 @@ void grpc_iomgr_shutdown(void) {
   gpr_mu_unlock(&g_mu);
 
   grpc_kick_poller();
-  gpr_event_wait(&g_background_callback_executor_done, gpr_inf_future);
+  gpr_event_wait(&g_background_callback_executor_done,
+                 gpr_inf_future(GPR_CLOCK_REALTIME));
 
   grpc_alarm_list_shutdown();
 
diff --git a/src/core/iomgr/pollset_posix.c b/src/core/iomgr/pollset_posix.c
index 85101764d2591b8c6917800105d8369498a8b385..7afff58eeecb1a39e9f237a974277a5d26da6285 100644
--- a/src/core/iomgr/pollset_posix.c
+++ b/src/core/iomgr/pollset_posix.c
@@ -191,17 +191,17 @@ int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline,
                                          gpr_timespec now) {
   gpr_timespec timeout;
   static const int max_spin_polling_us = 10;
-  if (gpr_time_cmp(deadline, gpr_inf_future) == 0) {
+  if (gpr_time_cmp(deadline, gpr_inf_future(GPR_CLOCK_REALTIME)) == 0) {
     return -1;
   }
-  if (gpr_time_cmp(
-          deadline,
-          gpr_time_add(now, gpr_time_from_micros(max_spin_polling_us))) <= 0) {
+  if (gpr_time_cmp(deadline, gpr_time_add(now, gpr_time_from_micros(
+                                                   max_spin_polling_us,
+                                                   GPR_TIMESPAN))) <= 0) {
     return 0;
   }
   timeout = gpr_time_sub(deadline, now);
-  return gpr_time_to_millis(
-      gpr_time_add(timeout, gpr_time_from_nanos(GPR_NS_PER_SEC - 1)));
+  return gpr_time_to_millis(gpr_time_add(
+      timeout, gpr_time_from_nanos(GPR_NS_PER_SEC - 1, GPR_TIMESPAN)));
 }
 
 /*
diff --git a/src/core/iomgr/pollset_set.h b/src/core/iomgr/pollset_set.h
index 98e3b552a7a96dfc484fd63bdb92086e3e4e0ccb..6d73951c7037345f49e155a627e6c2867092b7dc 100644
--- a/src/core/iomgr/pollset_set.h
+++ b/src/core/iomgr/pollset_set.h
@@ -38,7 +38,7 @@
 
 /* A grpc_pollset_set is a set of pollsets that are interested in an
    action. Adding a pollset to a pollset_set automatically adds any
-   fd's (etc) that have been registered with the set_set with that pollset.
+   fd's (etc) that have been registered with the set_set to that pollset.
    Registering fd's automatically adds them to all current pollsets. */
 
 #ifdef GPR_POSIX_SOCKET
diff --git a/src/core/iomgr/tcp_server_windows.c b/src/core/iomgr/tcp_server_windows.c
index e6e1d1499e5ece0ec2894d33565bd5ee0d702002..187009b2c864610836c504722dbab0b4518493e2 100644
--- a/src/core/iomgr/tcp_server_windows.c
+++ b/src/core/iomgr/tcp_server_windows.c
@@ -116,7 +116,7 @@ void grpc_tcp_server_destroy(grpc_tcp_server *s,
   }
   /* This happens asynchronously. Wait while that happens. */
   while (s->active_ports) {
-    gpr_cv_wait(&s->cv, &s->mu, gpr_inf_future);
+    gpr_cv_wait(&s->cv, &s->mu, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   gpr_mu_unlock(&s->mu);
 
diff --git a/src/core/security/credentials.c b/src/core/security/credentials.c
index 230f0dfb85faa966dbb4a221524453ba34332872..fb59fa4b0e50b16f5866a75f4e4068b9d6742833 100644
--- a/src/core/security/credentials.c
+++ b/src/core/security/credentials.c
@@ -324,7 +324,7 @@ static void jwt_reset_cache(grpc_jwt_credentials *c) {
     gpr_free(c->cached.service_url);
     c->cached.service_url = NULL;
   }
-  c->cached.jwt_expiration = gpr_inf_past;
+  c->cached.jwt_expiration = gpr_inf_past(GPR_CLOCK_REALTIME);
 }
 
 static void jwt_destroy(grpc_credentials *creds) {
@@ -347,8 +347,8 @@ static void jwt_get_request_metadata(grpc_credentials *creds,
                                      grpc_credentials_metadata_cb cb,
                                      void *user_data) {
   grpc_jwt_credentials *c = (grpc_jwt_credentials *)creds;
-  gpr_timespec refresh_threshold = {GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS,
-                                    0};
+  gpr_timespec refresh_threshold = gpr_time_from_seconds(
+      GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS, GPR_TIMESPAN);
 
   /* See if we can return a cached jwt. */
   grpc_credentials_md_store *jwt_md = NULL;
@@ -516,6 +516,7 @@ grpc_oauth2_token_fetcher_credentials_parse_server_response(
                  access_token->value);
     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);
     *token_md = grpc_credentials_md_store_create(1);
     grpc_credentials_md_store_add_cstrings(
@@ -552,7 +553,7 @@ static void on_oauth2_token_fetcher_http_response(
     r->cb(r->user_data, c->access_token_md->entries,
           c->access_token_md->num_entries, status);
   } else {
-    c->token_expiration = gpr_inf_past;
+    c->token_expiration = gpr_inf_past(GPR_CLOCK_REALTIME);
     r->cb(r->user_data, NULL, 0, status);
   }
   gpr_mu_unlock(&c->mu);
@@ -564,8 +565,8 @@ static void oauth2_token_fetcher_get_request_metadata(
     grpc_credentials_metadata_cb cb, void *user_data) {
   grpc_oauth2_token_fetcher_credentials *c =
       (grpc_oauth2_token_fetcher_credentials *)creds;
-  gpr_timespec refresh_threshold = {GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS,
-                                    0};
+  gpr_timespec refresh_threshold = gpr_time_from_seconds(
+      GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS, GPR_TIMESPAN);
   grpc_credentials_md_store *cached_access_token_md = NULL;
   {
     gpr_mu_lock(&c->mu);
@@ -596,7 +597,7 @@ static void init_oauth2_token_fetcher(grpc_oauth2_token_fetcher_credentials *c,
   c->base.type = GRPC_CREDENTIALS_TYPE_OAUTH2;
   gpr_ref_init(&c->base.refcount, 1);
   gpr_mu_init(&c->mu);
-  c->token_expiration = gpr_inf_past;
+  c->token_expiration = gpr_inf_past(GPR_CLOCK_REALTIME);
   c->fetch_func = fetch_func;
   grpc_httpcli_context_init(&c->httpcli_context);
 }
diff --git a/src/core/security/google_default_credentials.c b/src/core/security/google_default_credentials.c
index f622deff425cba57f93f09867f2d4903774186fb..833484310f272895584660e5909b0a4054390ecb 100644
--- a/src/core/security/google_default_credentials.c
+++ b/src/core/security/google_default_credentials.c
@@ -91,7 +91,7 @@ static int is_stack_running_on_compute_engine(void) {
 
   /* The http call is local. If it takes more than one sec, it is for sure not
      on compute engine. */
-  gpr_timespec max_detection_delay = {1, 0};
+  gpr_timespec max_detection_delay = gpr_time_from_seconds(1, GPR_TIMESPAN);
 
   grpc_pollset_init(&detector.pollset);
   detector.is_done = 0;
@@ -112,7 +112,7 @@ static int is_stack_running_on_compute_engine(void) {
      called once for the lifetime of the process by the default credentials. */
   gpr_mu_lock(GRPC_POLLSET_MU(&detector.pollset));
   while (!detector.is_done) {
-    grpc_pollset_work(&detector.pollset, gpr_inf_future);
+    grpc_pollset_work(&detector.pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   gpr_mu_unlock(GRPC_POLLSET_MU(&detector.pollset));
 
diff --git a/src/core/security/json_token.c b/src/core/security/json_token.c
index 9b1ea255aec1ed756c35e37540a8416cba10d38c..021912f3337bc602de5e2f1b47dbd68bee8a2475 100644
--- a/src/core/security/json_token.c
+++ b/src/core/security/json_token.c
@@ -49,7 +49,7 @@
 /* --- Constants. --- */
 
 /* 1 hour max. */
-const gpr_timespec grpc_max_auth_token_lifetime = {3600, 0};
+const gpr_timespec grpc_max_auth_token_lifetime = {3600, 0, GPR_TIMESPAN};
 
 #define GRPC_JWT_RSA_SHA256_ALGORITHM "RS256"
 #define GRPC_JWT_TYPE "JWT"
diff --git a/src/core/security/jwt_verifier.c b/src/core/security/jwt_verifier.c
index 9140eb2ef7920c168fb165c2cc902e0e4e49b943..1276693da7f849e8e35f0c96dea2d5748efbc927 100644
--- a/src/core/security/jwt_verifier.c
+++ b/src/core/security/jwt_verifier.c
@@ -109,7 +109,7 @@ static const char *validate_string_field(const grpc_json *json,
 
 static gpr_timespec validate_time_field(const grpc_json *json,
                                         const char *key) {
-  gpr_timespec result = gpr_time_0;
+  gpr_timespec result = gpr_time_0(GPR_CLOCK_REALTIME);
   if (json->type != GRPC_JSON_NUMBER) {
     gpr_log(GPR_ERROR, "Invalid %s field [%s]", key, json->value);
     return result;
@@ -221,17 +221,17 @@ const char *grpc_jwt_claims_audience(const grpc_jwt_claims *claims) {
 }
 
 gpr_timespec grpc_jwt_claims_issued_at(const grpc_jwt_claims *claims) {
-  if (claims == NULL) return gpr_inf_past;
+  if (claims == NULL) return gpr_inf_past(GPR_CLOCK_REALTIME);
   return claims->iat;
 }
 
 gpr_timespec grpc_jwt_claims_expires_at(const grpc_jwt_claims *claims) {
-  if (claims == NULL) return gpr_inf_future;
+  if (claims == NULL) return gpr_inf_future(GPR_CLOCK_REALTIME);
   return claims->exp;
 }
 
 gpr_timespec grpc_jwt_claims_not_before(const grpc_jwt_claims *claims) {
-  if (claims == NULL) return gpr_inf_past;
+  if (claims == NULL) return gpr_inf_past(GPR_CLOCK_REALTIME);
   return claims->nbf;
 }
 
@@ -242,9 +242,9 @@ grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, gpr_slice buffer) {
   memset(claims, 0, sizeof(grpc_jwt_claims));
   claims->json = json;
   claims->buffer = buffer;
-  claims->iat = gpr_inf_past;
-  claims->nbf = gpr_inf_past;
-  claims->exp = gpr_inf_future;
+  claims->iat = gpr_inf_past(GPR_CLOCK_REALTIME);
+  claims->nbf = gpr_inf_past(GPR_CLOCK_REALTIME);
+  claims->exp = gpr_inf_future(GPR_CLOCK_REALTIME);
 
   /* Per the spec, all fields are optional. */
   for (cur = json->child; cur != NULL; cur = cur->next) {
@@ -262,13 +262,16 @@ grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, gpr_slice buffer) {
       if (claims->jti == NULL) goto error;
     } else if (strcmp(cur->key, "iat") == 0) {
       claims->iat = validate_time_field(cur, "iat");
-      if (gpr_time_cmp(claims->iat, gpr_time_0) == 0) goto error;
+      if (gpr_time_cmp(claims->iat, gpr_time_0(GPR_CLOCK_REALTIME)) == 0)
+        goto error;
     } else if (strcmp(cur->key, "exp") == 0) {
       claims->exp = validate_time_field(cur, "exp");
-      if (gpr_time_cmp(claims->exp, gpr_time_0) == 0) goto error;
+      if (gpr_time_cmp(claims->exp, gpr_time_0(GPR_CLOCK_REALTIME)) == 0)
+        goto error;
     } else if (strcmp(cur->key, "nbf") == 0) {
       claims->nbf = validate_time_field(cur, "nbf");
-      if (gpr_time_cmp(claims->nbf, gpr_time_0) == 0) goto error;
+      if (gpr_time_cmp(claims->nbf, gpr_time_0(GPR_CLOCK_REALTIME)) == 0)
+        goto error;
     }
   }
   return claims;
@@ -359,10 +362,10 @@ void verifier_cb_ctx_destroy(verifier_cb_ctx *ctx) {
 /* --- grpc_jwt_verifier object. --- */
 
 /* Clock skew defaults to one minute. */
-gpr_timespec grpc_jwt_verifier_clock_skew = {60, 0};
+gpr_timespec grpc_jwt_verifier_clock_skew = {60, 0, GPR_TIMESPAN};
 
 /* Max delay defaults to one minute. */
-gpr_timespec grpc_jwt_verifier_max_delay = {60, 0};
+gpr_timespec grpc_jwt_verifier_max_delay = {60, 0, GPR_TIMESPAN};
 
 typedef struct {
   char *email_domain;
diff --git a/src/core/security/secure_transport_setup.c b/src/core/security/secure_transport_setup.c
index 731b382f091780cf057afb4b97001be9a0f1e2fd..0c3572b53c444c32446c03697923916347a8df0c 100644
--- a/src/core/security/secure_transport_setup.c
+++ b/src/core/security/secure_transport_setup.c
@@ -47,7 +47,8 @@ typedef struct {
   tsi_handshaker *handshaker;
   unsigned char *handshake_buffer;
   size_t handshake_buffer_size;
-  grpc_endpoint *endpoint;
+  grpc_endpoint *wrapped_endpoint;
+  grpc_endpoint *secure_endpoint;
   gpr_slice_buffer left_overs;
   grpc_secure_transport_setup_done_cb cb;
   void *user_data;
@@ -63,13 +64,16 @@ static void on_handshake_data_sent_to_peer(void *setup,
 static void secure_transport_setup_done(grpc_secure_transport_setup *s,
                                         int is_success) {
   if (is_success) {
-    s->cb(s->user_data, GRPC_SECURITY_OK, s->endpoint);
+    s->cb(s->user_data, GRPC_SECURITY_OK, s->wrapped_endpoint,
+          s->secure_endpoint);
   } else {
-    if (s->endpoint != NULL) {
-      grpc_endpoint_shutdown(s->endpoint);
-      grpc_endpoint_destroy(s->endpoint);
+    if (s->secure_endpoint != NULL) {
+      grpc_endpoint_shutdown(s->secure_endpoint);
+      grpc_endpoint_destroy(s->secure_endpoint);
+    } else {
+      grpc_endpoint_destroy(s->wrapped_endpoint);
     }
-    s->cb(s->user_data, GRPC_SECURITY_ERROR, NULL);
+    s->cb(s->user_data, GRPC_SECURITY_ERROR, s->wrapped_endpoint, NULL);
   }
   if (s->handshaker != NULL) tsi_handshaker_destroy(s->handshaker);
   if (s->handshake_buffer != NULL) gpr_free(s->handshake_buffer);
@@ -95,8 +99,9 @@ static void on_peer_checked(void *user_data, grpc_security_status status) {
     secure_transport_setup_done(s, 0);
     return;
   }
-  s->endpoint = grpc_secure_endpoint_create(
-      protector, s->endpoint, s->left_overs.slices, s->left_overs.count);
+  s->secure_endpoint =
+      grpc_secure_endpoint_create(protector, s->wrapped_endpoint,
+                                  s->left_overs.slices, s->left_overs.count);
   secure_transport_setup_done(s, 1);
   return;
 }
@@ -152,7 +157,7 @@ static void send_handshake_bytes_to_peer(grpc_secure_transport_setup *s) {
       gpr_slice_from_copied_buffer((const char *)s->handshake_buffer, offset);
   /* TODO(klempner,jboeuf): This should probably use the client setup
          deadline */
-  write_status = grpc_endpoint_write(s->endpoint, &to_send, 1,
+  write_status = grpc_endpoint_write(s->wrapped_endpoint, &to_send, 1,
                                      on_handshake_data_sent_to_peer, s);
   if (write_status == GRPC_ENDPOINT_WRITE_ERROR) {
     gpr_log(GPR_ERROR, "Could not send handshake data to peer.");
@@ -198,7 +203,7 @@ static void on_handshake_data_received_from_peer(
     if (result == TSI_INCOMPLETE_DATA) {
       /* TODO(klempner,jboeuf): This should probably use the client setup
          deadline */
-      grpc_endpoint_notify_on_read(s->endpoint,
+      grpc_endpoint_notify_on_read(s->wrapped_endpoint,
                                    on_handshake_data_received_from_peer, setup);
       cleanup_slices(slices, nslices);
       return;
@@ -256,7 +261,7 @@ static void on_handshake_data_sent_to_peer(void *setup,
   if (tsi_handshaker_is_in_progress(s->handshaker)) {
     /* TODO(klempner,jboeuf): This should probably use the client setup
        deadline */
-    grpc_endpoint_notify_on_read(s->endpoint,
+    grpc_endpoint_notify_on_read(s->wrapped_endpoint,
                                  on_handshake_data_received_from_peer, setup);
   } else {
     check_peer(s);
@@ -280,7 +285,7 @@ void grpc_setup_secure_transport(grpc_security_connector *connector,
       GRPC_SECURITY_CONNECTOR_REF(connector, "secure_transport_setup");
   s->handshake_buffer_size = GRPC_INITIAL_HANDSHAKE_BUFFER_SIZE;
   s->handshake_buffer = gpr_malloc(s->handshake_buffer_size);
-  s->endpoint = nonsecure_endpoint;
+  s->wrapped_endpoint = nonsecure_endpoint;
   s->user_data = user_data;
   s->cb = cb;
   gpr_slice_buffer_init(&s->left_overs);
diff --git a/src/core/security/secure_transport_setup.h b/src/core/security/secure_transport_setup.h
index 58701c461d9f619b27283eb970cb217b57bfaa88..29025f5236bc758f32072edf5cd19f5b2666c02e 100644
--- a/src/core/security/secure_transport_setup.h
+++ b/src/core/security/secure_transport_setup.h
@@ -42,7 +42,7 @@
 /* Ownership of the secure_endpoint is transfered. */
 typedef void (*grpc_secure_transport_setup_done_cb)(
     void *user_data, grpc_security_status status,
-    grpc_endpoint *secure_endpoint);
+    grpc_endpoint *wrapped_endpoint, grpc_endpoint *secure_endpoint);
 
 /* Calls the callback upon completion. */
 void grpc_setup_secure_transport(grpc_security_connector *connector,
diff --git a/src/core/security/server_secure_chttp2.c b/src/core/security/server_secure_chttp2.c
index 8a7ada07af9063b1d85e99747d388ca8d5d0f36b..3717b8989f489dcc3c7349827f10ba4baa92c2f6 100644
--- a/src/core/security/server_secure_chttp2.c
+++ b/src/core/security/server_secure_chttp2.c
@@ -51,10 +51,16 @@
 #include <grpc/support/sync.h>
 #include <grpc/support/useful.h>
 
+typedef struct tcp_endpoint_list {
+  grpc_endpoint *tcp_endpoint;
+  struct tcp_endpoint_list *next;
+} tcp_endpoint_list;
+
 typedef struct grpc_server_secure_state {
   grpc_server *server;
   grpc_tcp_server *tcp;
   grpc_security_connector *sc;
+  tcp_endpoint_list *handshaking_tcp_endpoints;
   int is_shutdown;
   gpr_mu mu;
   gpr_refcount refcount;
@@ -88,14 +94,37 @@ static void setup_transport(void *statep, grpc_transport *transport,
   grpc_channel_args_destroy(args_copy);
 }
 
+static int remove_tcp_from_list_locked(grpc_server_secure_state *state,
+                                       grpc_endpoint *tcp) {
+  tcp_endpoint_list *node = state->handshaking_tcp_endpoints;
+  tcp_endpoint_list *tmp = NULL;
+  if (node && node->tcp_endpoint == tcp) {
+    state->handshaking_tcp_endpoints = state->handshaking_tcp_endpoints->next;
+    gpr_free(node);
+    return 0;
+  }
+  while (node) {
+    if (node->next->tcp_endpoint == tcp) {
+      tmp = node->next;
+      node->next = node->next->next;
+      gpr_free(tmp);
+      return 0;
+    }
+    node = node->next;
+  }
+  return -1;
+}
+
 static void on_secure_transport_setup_done(void *statep,
                                            grpc_security_status status,
+                                           grpc_endpoint *wrapped_endpoint,
                                            grpc_endpoint *secure_endpoint) {
   grpc_server_secure_state *state = statep;
   grpc_transport *transport;
   grpc_mdctx *mdctx;
   if (status == GRPC_SECURITY_OK) {
     gpr_mu_lock(&state->mu);
+    remove_tcp_from_list_locked(state, wrapped_endpoint);
     if (!state->is_shutdown) {
       mdctx = grpc_mdctx_create();
       transport = grpc_create_chttp2_transport(
@@ -110,6 +139,9 @@ static void on_secure_transport_setup_done(void *statep,
     }
     gpr_mu_unlock(&state->mu);
   } else {
+    gpr_mu_lock(&state->mu);
+    remove_tcp_from_list_locked(state, wrapped_endpoint);
+    gpr_mu_unlock(&state->mu);
     gpr_log(GPR_ERROR, "Secure transport failed with error %d", status);
   }
   state_unref(state);
@@ -117,7 +149,14 @@ static void on_secure_transport_setup_done(void *statep,
 
 static void on_accept(void *statep, grpc_endpoint *tcp) {
   grpc_server_secure_state *state = statep;
+  tcp_endpoint_list *node;
   state_ref(state);
+  node = gpr_malloc(sizeof(tcp_endpoint_list));
+  node->tcp_endpoint = tcp;
+  gpr_mu_lock(&state->mu);
+  node->next = state->handshaking_tcp_endpoints;
+  state->handshaking_tcp_endpoints = node;
+  gpr_mu_unlock(&state->mu);
   grpc_setup_secure_transport(state->sc, tcp, on_secure_transport_setup_done,
                               state);
 }
@@ -132,6 +171,13 @@ static void start(grpc_server *server, void *statep, grpc_pollset **pollsets,
 static void destroy_done(void *statep) {
   grpc_server_secure_state *state = statep;
   grpc_server_listener_destroy_done(state->server);
+  gpr_mu_lock(&state->mu);
+  while (state->handshaking_tcp_endpoints != NULL) {
+    grpc_endpoint_shutdown(state->handshaking_tcp_endpoints->tcp_endpoint);
+    remove_tcp_from_list_locked(state,
+                                state->handshaking_tcp_endpoints->tcp_endpoint);
+  }
+  gpr_mu_unlock(&state->mu);
   state_unref(state);
 }
 
@@ -209,6 +255,7 @@ int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
   state->server = server;
   state->tcp = tcp;
   state->sc = sc;
+  state->handshaking_tcp_endpoints = NULL;
   state->is_shutdown = 0;
   gpr_mu_init(&state->mu);
   gpr_ref_init(&state->refcount, 1);
diff --git a/src/core/support/cancellable.c b/src/core/support/cancellable.c
index 3cbb318ab6c296eba62901775ce339b3969005fe..4756f1e1252e8f6a9a4df602c4066a1c29498c8d 100644
--- a/src/core/support/cancellable.c
+++ b/src/core/support/cancellable.c
@@ -121,8 +121,9 @@ void gpr_cancellable_cancel(gpr_cancellable *c) {
         } else {
           gpr_event ev;
           gpr_event_init(&ev);
-          gpr_event_wait(&ev, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                                           gpr_time_from_micros(1000)));
+          gpr_event_wait(
+              &ev, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                gpr_time_from_micros(1000, GPR_TIMESPAN)));
         }
       }
     } while (failures != 0);
diff --git a/src/core/support/sync_posix.c b/src/core/support/sync_posix.c
index 0ccbd4923f8cb7f858ab6b72dc87d1b5c7ab7202..41af8ceb0a5a8416808a2c1b9372cf3b79a971a5 100644
--- a/src/core/support/sync_posix.c
+++ b/src/core/support/sync_posix.c
@@ -63,7 +63,7 @@ void gpr_cv_destroy(gpr_cv *cv) { GPR_ASSERT(pthread_cond_destroy(cv) == 0); }
 
 int gpr_cv_wait(gpr_cv *cv, gpr_mu *mu, gpr_timespec abs_deadline) {
   int err = 0;
-  if (gpr_time_cmp(abs_deadline, gpr_inf_future) == 0) {
+  if (gpr_time_cmp(abs_deadline, gpr_inf_future(GPR_CLOCK_REALTIME)) == 0) {
     err = pthread_cond_wait(cv, mu);
   } else {
     struct timespec abs_deadline_ts;
diff --git a/src/core/support/sync_win32.c b/src/core/support/sync_win32.c
index 29b77fc4c25e113b8ae5ac688b93bcea9af5d9e5..63196d10d3cfef1d14468bccad87631bc4199639 100644
--- a/src/core/support/sync_win32.c
+++ b/src/core/support/sync_win32.c
@@ -83,7 +83,7 @@ int gpr_cv_wait(gpr_cv *cv, gpr_mu *mu, gpr_timespec abs_deadline) {
   int timeout = 0;
   DWORD timeout_max_ms;
   mu->locked = 0;
-  if (gpr_time_cmp(abs_deadline, gpr_inf_future) == 0) {
+  if (gpr_time_cmp(abs_deadline, gpr_inf_future(GPR_CLOCK_REALTIME)) == 0) {
     SleepConditionVariableCS(cv, &mu->cs, INFINITE);
   } else {
     gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME);
diff --git a/src/core/support/time.c b/src/core/support/time.c
index d47b08b2664cbd0982e1fbff728c9790364732f5..570f195bd111400163c17aa129c426da83e20606 100644
--- a/src/core/support/time.c
+++ b/src/core/support/time.c
@@ -41,6 +41,7 @@
 
 int gpr_time_cmp(gpr_timespec a, gpr_timespec b) {
   int cmp = (a.tv_sec > b.tv_sec) - (a.tv_sec < b.tv_sec);
+  GPR_ASSERT(a.clock_type == b.clock_type);
   if (cmp == 0) {
     cmp = (a.tv_nsec > b.tv_nsec) - (a.tv_nsec < b.tv_nsec);
   }
@@ -71,19 +72,40 @@ gpr_timespec gpr_time_max(gpr_timespec a, gpr_timespec b) {
   ((t)(TYPE_IS_SIGNED(t) ? (TOP_BIT_OF_TYPE(t) - 1) \
                          : ((TOP_BIT_OF_TYPE(t) - 1) << 1) + 1))
 
-const gpr_timespec gpr_time_0 = {0, 0};
-const gpr_timespec gpr_inf_future = {TYPE_MAX(time_t), 0};
-const gpr_timespec gpr_inf_past = {TYPE_MIN(time_t), 0};
+gpr_timespec gpr_time_0(gpr_clock_type type) {
+  gpr_timespec out;
+  out.tv_sec = 0;
+  out.tv_nsec = 0;
+  out.clock_type = type;
+  return out;
+}
+
+gpr_timespec gpr_inf_future(gpr_clock_type type) {
+  gpr_timespec out;
+  out.tv_sec = TYPE_MAX(time_t);
+  out.tv_nsec = 0;
+  out.clock_type = type;
+  return out;
+}
+
+gpr_timespec gpr_inf_past(gpr_clock_type type) {
+  gpr_timespec out;
+  out.tv_sec = TYPE_MIN(time_t);
+  out.tv_nsec = 0;
+  out.clock_type = type;
+  return out;
+}
 
 /* TODO(ctiller): consider merging _nanos, _micros, _millis into a single
    function for maintainability. Similarly for _seconds, _minutes, and _hours */
 
-gpr_timespec gpr_time_from_nanos(long ns) {
+gpr_timespec gpr_time_from_nanos(long ns, gpr_clock_type type) {
   gpr_timespec result;
+  result.clock_type = type;
   if (ns == LONG_MAX) {
-    result = gpr_inf_future;
+    result = gpr_inf_future(type);
   } else if (ns == LONG_MIN) {
-    result = gpr_inf_past;
+    result = gpr_inf_past(type);
   } else if (ns >= 0) {
     result.tv_sec = ns / GPR_NS_PER_SEC;
     result.tv_nsec = (int)(ns - result.tv_sec * GPR_NS_PER_SEC);
@@ -95,12 +117,13 @@ gpr_timespec gpr_time_from_nanos(long ns) {
   return result;
 }
 
-gpr_timespec gpr_time_from_micros(long us) {
+gpr_timespec gpr_time_from_micros(long us, gpr_clock_type type) {
   gpr_timespec result;
+  result.clock_type = type;
   if (us == LONG_MAX) {
-    result = gpr_inf_future;
+    result = gpr_inf_future(type);
   } else if (us == LONG_MIN) {
-    result = gpr_inf_past;
+    result = gpr_inf_past(type);
   } else if (us >= 0) {
     result.tv_sec = us / 1000000;
     result.tv_nsec = (int)((us - result.tv_sec * 1000000) * 1000);
@@ -112,12 +135,13 @@ gpr_timespec gpr_time_from_micros(long us) {
   return result;
 }
 
-gpr_timespec gpr_time_from_millis(long ms) {
+gpr_timespec gpr_time_from_millis(long ms, gpr_clock_type type) {
   gpr_timespec result;
+  result.clock_type = type;
   if (ms == LONG_MAX) {
-    result = gpr_inf_future;
+    result = gpr_inf_future(type);
   } else if (ms == LONG_MIN) {
-    result = gpr_inf_past;
+    result = gpr_inf_past(type);
   } else if (ms >= 0) {
     result.tv_sec = ms / 1000;
     result.tv_nsec = (int)((ms - result.tv_sec * 1000) * 1000000);
@@ -129,12 +153,13 @@ gpr_timespec gpr_time_from_millis(long ms) {
   return result;
 }
 
-gpr_timespec gpr_time_from_seconds(long s) {
+gpr_timespec gpr_time_from_seconds(long s, gpr_clock_type type) {
   gpr_timespec result;
+  result.clock_type = type;
   if (s == LONG_MAX) {
-    result = gpr_inf_future;
+    result = gpr_inf_future(type);
   } else if (s == LONG_MIN) {
-    result = gpr_inf_past;
+    result = gpr_inf_past(type);
   } else {
     result.tv_sec = s;
     result.tv_nsec = 0;
@@ -142,12 +167,13 @@ gpr_timespec gpr_time_from_seconds(long s) {
   return result;
 }
 
-gpr_timespec gpr_time_from_minutes(long m) {
+gpr_timespec gpr_time_from_minutes(long m, gpr_clock_type type) {
   gpr_timespec result;
+  result.clock_type = type;
   if (m >= LONG_MAX / 60) {
-    result = gpr_inf_future;
+    result = gpr_inf_future(type);
   } else if (m <= LONG_MIN / 60) {
-    result = gpr_inf_past;
+    result = gpr_inf_past(type);
   } else {
     result.tv_sec = m * 60;
     result.tv_nsec = 0;
@@ -155,12 +181,13 @@ gpr_timespec gpr_time_from_minutes(long m) {
   return result;
 }
 
-gpr_timespec gpr_time_from_hours(long h) {
+gpr_timespec gpr_time_from_hours(long h, gpr_clock_type type) {
   gpr_timespec result;
+  result.clock_type = type;
   if (h >= LONG_MAX / 3600) {
-    result = gpr_inf_future;
+    result = gpr_inf_future(type);
   } else if (h <= LONG_MIN / 3600) {
-    result = gpr_inf_past;
+    result = gpr_inf_past(type);
   } else {
     result.tv_sec = h * 3600;
     result.tv_nsec = 0;
@@ -171,6 +198,8 @@ gpr_timespec gpr_time_from_hours(long h) {
 gpr_timespec gpr_time_add(gpr_timespec a, gpr_timespec b) {
   gpr_timespec sum;
   int inc = 0;
+  GPR_ASSERT(b.clock_type == GPR_TIMESPAN);
+  sum.clock_type = a.clock_type;
   sum.tv_nsec = a.tv_nsec + b.tv_nsec;
   if (sum.tv_nsec >= GPR_NS_PER_SEC) {
     sum.tv_nsec -= GPR_NS_PER_SEC;
@@ -180,14 +209,14 @@ gpr_timespec gpr_time_add(gpr_timespec a, gpr_timespec b) {
     sum = a;
   } else if (b.tv_sec == TYPE_MAX(time_t) ||
              (b.tv_sec >= 0 && a.tv_sec >= TYPE_MAX(time_t) - b.tv_sec)) {
-    sum = gpr_inf_future;
+    sum = gpr_inf_future(sum.clock_type);
   } else if (b.tv_sec == TYPE_MIN(time_t) ||
              (b.tv_sec <= 0 && a.tv_sec <= TYPE_MIN(time_t) - b.tv_sec)) {
-    sum = gpr_inf_past;
+    sum = gpr_inf_past(sum.clock_type);
   } else {
     sum.tv_sec = a.tv_sec + b.tv_sec;
     if (inc != 0 && sum.tv_sec == TYPE_MAX(time_t) - 1) {
-      sum = gpr_inf_future;
+      sum = gpr_inf_future(sum.clock_type);
     } else {
       sum.tv_sec += inc;
     }
@@ -198,6 +227,12 @@ gpr_timespec gpr_time_add(gpr_timespec a, gpr_timespec b) {
 gpr_timespec gpr_time_sub(gpr_timespec a, gpr_timespec b) {
   gpr_timespec diff;
   int dec = 0;
+  if (b.clock_type == GPR_TIMESPAN) {
+    diff.clock_type = a.clock_type;
+  } else {
+    GPR_ASSERT(a.clock_type == b.clock_type);
+    diff.clock_type = GPR_TIMESPAN;
+  }
   diff.tv_nsec = a.tv_nsec - b.tv_nsec;
   if (diff.tv_nsec < 0) {
     diff.tv_nsec += GPR_NS_PER_SEC;
@@ -207,14 +242,14 @@ gpr_timespec gpr_time_sub(gpr_timespec a, gpr_timespec b) {
     diff = a;
   } else if (b.tv_sec == TYPE_MIN(time_t) ||
              (b.tv_sec <= 0 && a.tv_sec >= TYPE_MAX(time_t) + b.tv_sec)) {
-    diff = gpr_inf_future;
+    diff = gpr_inf_future(GPR_CLOCK_REALTIME);
   } else if (b.tv_sec == TYPE_MAX(time_t) ||
              (b.tv_sec >= 0 && a.tv_sec <= TYPE_MIN(time_t) + b.tv_sec)) {
-    diff = gpr_inf_past;
+    diff = gpr_inf_past(GPR_CLOCK_REALTIME);
   } else {
     diff.tv_sec = a.tv_sec - b.tv_sec;
     if (dec != 0 && diff.tv_sec == TYPE_MIN(time_t) + 1) {
-      diff = gpr_inf_past;
+      diff = gpr_inf_past(GPR_CLOCK_REALTIME);
     } else {
       diff.tv_sec -= dec;
     }
@@ -225,6 +260,9 @@ gpr_timespec gpr_time_sub(gpr_timespec a, gpr_timespec b) {
 int gpr_time_similar(gpr_timespec a, gpr_timespec b, gpr_timespec threshold) {
   int cmp_ab;
 
+  GPR_ASSERT(a.clock_type == b.clock_type);
+  GPR_ASSERT(threshold.clock_type == GPR_TIMESPAN);
+
   cmp_ab = gpr_time_cmp(a, b);
   if (cmp_ab == 0) return 1;
   if (cmp_ab < 0) {
diff --git a/src/core/support/time_posix.c b/src/core/support/time_posix.c
index f9b79587831d5f3e6d4383011fcf999febc491e8..258b2e640e9eaa75baafe2cd46301325c6779f02 100644
--- a/src/core/support/time_posix.c
+++ b/src/core/support/time_posix.c
@@ -38,6 +38,7 @@
 #include <stdlib.h>
 #include <time.h>
 #include <unistd.h>
+#include <grpc/support/log.h>
 #include <grpc/support/time.h>
 
 static struct timespec timespec_from_gpr(gpr_timespec gts) {
@@ -48,10 +49,12 @@ static struct timespec timespec_from_gpr(gpr_timespec gts) {
 }
 
 #if _POSIX_TIMERS > 0
-static gpr_timespec gpr_from_timespec(struct timespec ts) {
+static gpr_timespec gpr_from_timespec(struct timespec ts,
+                                      gpr_clock_type clock) {
   gpr_timespec rv;
   rv.tv_sec = ts.tv_sec;
   rv.tv_nsec = (int)ts.tv_nsec;
+  rv.clock_type = clock;
   return rv;
 }
 
@@ -62,8 +65,9 @@ void gpr_time_init(void) {}
 
 gpr_timespec gpr_now(gpr_clock_type clock) {
   struct timespec now;
+  GPR_ASSERT(clock != GPR_TIMESPAN);
   clock_gettime(clockid_for_gpr_clock[clock], &now);
-  return gpr_from_timespec(now);
+  return gpr_from_timespec(now, clock);
 }
 #else
 /* For some reason Apple's OSes haven't implemented clock_gettime. */
@@ -88,6 +92,7 @@ gpr_timespec gpr_now(gpr_clock_type clock) {
   struct timeval now_tv;
   double now_dbl;
 
+  now.clock_type = clock;
   switch (clock) {
     case GPR_CLOCK_REALTIME:
       gettimeofday(&now_tv, NULL);
@@ -99,6 +104,8 @@ gpr_timespec gpr_now(gpr_clock_type clock) {
       now.tv_sec = now_dbl * 1e-9;
       now.tv_nsec = now_dbl - now.tv_sec * 1e9;
       break;
+    case GPR_TIMESPAN:
+      abort();
   }
 
   return now;
diff --git a/src/core/support/time_win32.c b/src/core/support/time_win32.c
index fa77c74eeb1fe5ec987a0d56ba6c391a9711a5d3..238cd07ebc7990d967be481836a69dd895151db4 100644
--- a/src/core/support/time_win32.c
+++ b/src/core/support/time_win32.c
@@ -55,6 +55,7 @@ gpr_timespec gpr_now(gpr_clock_type clock) {
   struct _timeb now_tb;
   LARGE_INTEGER timestamp;
   double now_dbl;
+  now_tv.clock_type = clock;
   switch (clock) {
     case GPR_CLOCK_REALTIME:
       _ftime_s(&now_tb);
diff --git a/src/core/surface/byte_buffer_queue.c b/src/core/surface/byte_buffer_queue.c
index 7c31bfe5da2176e2d502512d59faf60859e11cb5..e47dc4f4ce695fb2d8d0106a438a69eba7229085 100644
--- a/src/core/surface/byte_buffer_queue.c
+++ b/src/core/surface/byte_buffer_queue.c
@@ -62,6 +62,7 @@ int grpc_bbq_empty(grpc_byte_buffer_queue *q) {
 }
 
 void grpc_bbq_push(grpc_byte_buffer_queue *q, grpc_byte_buffer *buffer) {
+  q->bytes += grpc_byte_buffer_length(buffer);
   bba_push(&q->filling, buffer);
 }
 
@@ -72,8 +73,11 @@ void grpc_bbq_flush(grpc_byte_buffer_queue *q) {
   }
 }
 
+size_t grpc_bbq_bytes(grpc_byte_buffer_queue *q) { return q->bytes; }
+
 grpc_byte_buffer *grpc_bbq_pop(grpc_byte_buffer_queue *q) {
   grpc_bbq_array temp_array;
+  grpc_byte_buffer *out;
 
   if (q->drain_pos == q->draining.count) {
     if (q->filling.count == 0) {
@@ -87,5 +91,7 @@ grpc_byte_buffer *grpc_bbq_pop(grpc_byte_buffer_queue *q) {
     q->draining = temp_array;
   }
 
-  return q->draining.data[q->drain_pos++];
+  out = q->draining.data[q->drain_pos++];
+  q->bytes -= grpc_byte_buffer_length(out);
+  return out;
 }
diff --git a/src/core/surface/byte_buffer_queue.h b/src/core/surface/byte_buffer_queue.h
index 32c57f875638a667b02d62c2b0d737031bf5a3bf..f01958984f9fb07b63a2f5ee6181e4d60323d5fc 100644
--- a/src/core/surface/byte_buffer_queue.h
+++ b/src/core/surface/byte_buffer_queue.h
@@ -49,6 +49,7 @@ typedef struct {
   size_t drain_pos;
   grpc_bbq_array filling;
   grpc_bbq_array draining;
+  size_t bytes;
 } grpc_byte_buffer_queue;
 
 void grpc_bbq_destroy(grpc_byte_buffer_queue *q);
@@ -56,5 +57,6 @@ grpc_byte_buffer *grpc_bbq_pop(grpc_byte_buffer_queue *q);
 void grpc_bbq_flush(grpc_byte_buffer_queue *q);
 int grpc_bbq_empty(grpc_byte_buffer_queue *q);
 void grpc_bbq_push(grpc_byte_buffer_queue *q, grpc_byte_buffer *bb);
+size_t grpc_bbq_bytes(grpc_byte_buffer_queue *q);
 
 #endif  /* GRPC_INTERNAL_CORE_SURFACE_BYTE_BUFFER_QUEUE_H */
diff --git a/src/core/surface/call.c b/src/core/surface/call.c
index 0a551ac47fccfedcdde7346b06fb3a4f5b10864f..1146d8398212f75032b0b94062488c0d8aa09e65 100644
--- a/src/core/surface/call.c
+++ b/src/core/surface/call.c
@@ -347,7 +347,7 @@ grpc_call *grpc_call_create(grpc_channel *channel, grpc_completion_queue *cq,
   }
   grpc_call_stack_init(channel_stack, server_transport_data, initial_op_ptr,
                        CALL_STACK_FROM_CALL(call));
-  if (gpr_time_cmp(send_deadline, gpr_inf_future) != 0) {
+  if (gpr_time_cmp(send_deadline, gpr_inf_future(GPR_CLOCK_REALTIME)) != 0) {
     set_deadline_alarm(call, send_deadline);
   }
   return call;
@@ -513,6 +513,8 @@ static void unlock(grpc_call *call) {
   int completing_requests = 0;
   int start_op = 0;
   int i;
+  const gpr_uint32 MAX_RECV_PEEK_AHEAD = 65536;
+  size_t buffered_bytes;
   int cancel_alarm = 0;
 
   memset(&op, 0, sizeof(op));
@@ -528,6 +530,17 @@ static void unlock(grpc_call *call) {
     op.recv_ops = &call->recv_ops;
     op.recv_state = &call->recv_state;
     op.on_done_recv = &call->on_done_recv;
+    if (grpc_bbq_empty(&call->incoming_queue) && call->reading_message) {
+      op.max_recv_bytes = call->incoming_message_length -
+                          call->incoming_message.length + MAX_RECV_PEEK_AHEAD;
+    } else {
+      buffered_bytes = grpc_bbq_bytes(&call->incoming_queue);
+      if (buffered_bytes > MAX_RECV_PEEK_AHEAD) {
+        op.max_recv_bytes = 0;
+      } else {
+        op.max_recv_bytes = MAX_RECV_PEEK_AHEAD - buffered_bytes;
+      }
+    }
     call->receiving = 1;
     GRPC_CALL_INTERNAL_REF(call, "receiving");
     start_op = 1;
@@ -972,7 +985,7 @@ static int fill_send_ops(grpc_call *call, grpc_transport_stream_op *op) {
           mdb.list = chain_metadata_from_app(call, data.send_metadata.count,
                                              data.send_metadata.metadata);
           mdb.garbage.head = mdb.garbage.tail = NULL;
-          mdb.deadline = gpr_inf_future;
+          mdb.deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
           /* send status */
           /* TODO(ctiller): cache common status values */
           data = call->request_data[GRPC_IOREQ_SEND_STATUS];
@@ -1325,7 +1338,7 @@ static void recv_metadata(grpc_call *call, grpc_metadata_batch *md) {
       l->md = 0;
     }
   }
-  if (gpr_time_cmp(md->deadline, gpr_inf_future) != 0) {
+  if (gpr_time_cmp(md->deadline, gpr_inf_future(GPR_CLOCK_REALTIME)) != 0) {
     set_deadline_alarm(call, md->deadline);
   }
   if (!is_trailing) {
diff --git a/src/core/surface/completion_queue.c b/src/core/surface/completion_queue.c
index c67f75fc5c2047edfae8d40c9b3baa5a7e311e2a..84844182477796accd0a36f94785b2ade33a6e9d 100644
--- a/src/core/surface/completion_queue.c
+++ b/src/core/surface/completion_queue.c
@@ -116,7 +116,7 @@ void grpc_cq_begin_op(grpc_completion_queue *cc) {
 void grpc_cq_end_op(grpc_completion_queue *cc, void *tag, int success,
                     void (*done)(void *done_arg, grpc_cq_completion *storage),
                     void *done_arg, grpc_cq_completion *storage) {
-  int shutdown = gpr_unref(&cc->pending_events);
+  int shutdown;
 
   storage->tag = tag;
   storage->done = done;
@@ -124,15 +124,15 @@ void grpc_cq_end_op(grpc_completion_queue *cc, void *tag, int success,
   storage->next =
       ((gpr_uintptr)&cc->completed_head) | ((gpr_uintptr)(success != 0));
 
+  gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset));
+  shutdown = gpr_unref(&cc->pending_events);
   if (!shutdown) {
-    gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset));
     cc->completed_tail->next =
         ((gpr_uintptr)storage) | (1u & (gpr_uintptr)cc->completed_tail->next);
     cc->completed_tail = storage;
     grpc_pollset_kick(&cc->pollset);
     gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
   } else {
-    gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset));
     cc->completed_tail->next =
         ((gpr_uintptr)storage) | (1u & (gpr_uintptr)cc->completed_tail->next);
     cc->completed_tail = storage;
@@ -260,8 +260,9 @@ grpc_pollset *grpc_cq_pollset(grpc_completion_queue *cc) {
 void grpc_cq_hack_spin_pollset(grpc_completion_queue *cc) {
   gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset));
   grpc_pollset_kick(&cc->pollset);
-  grpc_pollset_work(&cc->pollset, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                                               gpr_time_from_millis(100)));
+  grpc_pollset_work(&cc->pollset,
+                    gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                 gpr_time_from_millis(100, GPR_TIMESPAN)));
   gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
 }
 
diff --git a/src/core/surface/lame_client.c b/src/core/surface/lame_client.c
index 3dd56fe5a961dec0f1881a320830b7caa368cf12..3f2bb5c8a98c7ad85b33dd67d58e0de4064bf2d2 100644
--- a/src/core/surface/lame_client.c
+++ b/src/core/surface/lame_client.c
@@ -72,7 +72,7 @@ static void lame_start_transport_stream_op(grpc_call_element *elem,
     mdb.list.head = &calld->status;
     mdb.list.tail = &calld->details;
     mdb.garbage.head = mdb.garbage.tail = NULL;
-    mdb.deadline = gpr_inf_future;
+    mdb.deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
     grpc_sopb_add_metadata(op->recv_ops, mdb);
     *op->recv_state = GRPC_STREAM_CLOSED;
     op->on_done_recv->cb(op->on_done_recv->cb_arg, 1);
diff --git a/src/core/surface/secure_channel_create.c b/src/core/surface/secure_channel_create.c
index 34ee3f8400f8201d42b32301fbd1d71d008b940d..f3c7d8397b74886d55cb4ab73b2b24577b51f24d 100644
--- a/src/core/surface/secure_channel_create.c
+++ b/src/core/surface/secure_channel_create.c
@@ -75,6 +75,7 @@ static void connector_unref(grpc_connector *con) {
 
 static void on_secure_transport_setup_done(void *arg,
                                            grpc_security_status status,
+                                           grpc_endpoint *wrapped_endpoint,
                                            grpc_endpoint *secure_endpoint) {
   connector *c = arg;
   grpc_iomgr_closure *notify;
diff --git a/src/core/surface/server.c b/src/core/surface/server.c
index 4dc51bf0319befbca4c4b0e6a30efa424239383a..37f0c3c0059fb3baa7c58f702f7d3091e3a3da3d 100644
--- a/src/core/surface/server.c
+++ b/src/core/surface/server.c
@@ -487,9 +487,9 @@ static void maybe_finish_shutdown(grpc_server *server) {
 
   if (server->root_channel_data.next != &server->root_channel_data ||
       server->listeners_destroyed < num_listeners(server)) {
-    if (gpr_time_cmp(
-            gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), server->last_shutdown_message_time),
-            gpr_time_from_seconds(1)) >= 0) {
+    if (gpr_time_cmp(gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME),
+                                  server->last_shutdown_message_time),
+                     gpr_time_from_seconds(1, GPR_TIMESPAN)) >= 0) {
       server->last_shutdown_message_time = gpr_now(GPR_CLOCK_REALTIME);
       gpr_log(GPR_DEBUG,
               "Waiting for %d channels and %d/%d listeners to be destroyed"
@@ -536,7 +536,8 @@ static void server_on_recv(void *ptr, int success) {
       grpc_stream_op *op = &ops[i];
       if (op->type != GRPC_OP_METADATA) continue;
       grpc_metadata_batch_filter(&op->data.metadata, server_filter, elem);
-      if (0 != gpr_time_cmp(op->data.metadata.deadline, gpr_inf_future)) {
+      if (0 != gpr_time_cmp(op->data.metadata.deadline,
+                            gpr_inf_future(GPR_CLOCK_REALTIME))) {
         calld->deadline = op->data.metadata.deadline;
       }
       calld->got_initial_metadata = 1;
@@ -610,7 +611,7 @@ static void accept_stream(void *cd, grpc_transport *transport,
   channel_data *chand = cd;
   /* create a call */
   grpc_call_create(chand->channel, NULL, transport_server_data, NULL, 0,
-                   gpr_inf_future);
+                   gpr_inf_future(GPR_CLOCK_REALTIME));
 }
 
 static void channel_connectivity_changed(void *cd, int iomgr_status_ignored) {
@@ -638,7 +639,7 @@ static void init_call_elem(grpc_call_element *elem,
   call_data *calld = elem->call_data;
   channel_data *chand = elem->channel_data;
   memset(calld, 0, sizeof(call_data));
-  calld->deadline = gpr_inf_future;
+  calld->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
   calld->call = grpc_call_from_top_element(elem);
   gpr_mu_init(&calld->mu_state);
 
diff --git a/src/core/transport/chttp2/frame_window_update.c b/src/core/transport/chttp2/frame_window_update.c
index b817df77459e4ed3606f477571fd6f70040cbbcb..d624298ad2a121f897089ab0472daf14a763d39a 100644
--- a/src/core/transport/chttp2/frame_window_update.c
+++ b/src/core/transport/chttp2/frame_window_update.c
@@ -94,8 +94,8 @@ grpc_chttp2_parse_error grpc_chttp2_window_update_parser_parse(
     }
     GPR_ASSERT(is_last);
 
-    if (transport_parsing->incoming_stream_id) {
-      if (stream_parsing) {
+    if (transport_parsing->incoming_stream_id != 0) {
+      if (stream_parsing != NULL) {
         GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("update", transport_parsing,
                                          stream_parsing, outgoing_window_update,
                                          p->amount);
diff --git a/src/core/transport/chttp2/incoming_metadata.c b/src/core/transport/chttp2/incoming_metadata.c
index 77162a68644a7eee0bf52ab462ed4cb3ac47ae2f..974b864ffb4d467a76011d1af1169ee696ba21ca 100644
--- a/src/core/transport/chttp2/incoming_metadata.c
+++ b/src/core/transport/chttp2/incoming_metadata.c
@@ -42,7 +42,7 @@
 
 void grpc_chttp2_incoming_metadata_buffer_init(
     grpc_chttp2_incoming_metadata_buffer *buffer) {
-  buffer->deadline = gpr_inf_future;
+  buffer->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
 }
 
 void grpc_chttp2_incoming_metadata_buffer_destroy(
@@ -87,7 +87,7 @@ void grpc_chttp2_incoming_metadata_buffer_place_metadata_batch_into(
   b.list.tail = (void *)(gpr_intptr)buffer->count;
   b.garbage.head = b.garbage.tail = NULL;
   b.deadline = buffer->deadline;
-  buffer->deadline = gpr_inf_future;
+  buffer->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
 
   grpc_sopb_add_metadata(sopb, b);
 }
diff --git a/src/core/transport/chttp2/internal.h b/src/core/transport/chttp2/internal.h
index bdd4b432ebd8c25eaebf94f9e32e219e8dfbe27c..e5e6f445b7021f121723ebca4f88ee5c7f865bb2 100644
--- a/src/core/transport/chttp2/internal.h
+++ b/src/core/transport/chttp2/internal.h
@@ -353,7 +353,19 @@ typedef struct {
 
   /** window available for us to send to peer */
   gpr_int64 outgoing_window;
-  /** window available for peer to send to us - updated after parse */
+  /** The number of bytes the upper layers have offered to receive.
+      As the upper layer offers more bytes, this value increases.
+      As bytes are read, this value decreases. */
+  gpr_uint32 max_recv_bytes;
+  /** The number of bytes the upper layer has offered to read but we have
+      not yet announced to HTTP2 flow control.
+      As the upper layers offer to read more bytes, this value increases.
+      As we advertise incoming flow control window, this value decreases. */
+  gpr_uint32 unannounced_incoming_window;
+  /** The number of bytes of HTTP2 flow control we have advertised.
+      As we advertise incoming flow control window, this value increases.
+      As bytes are read, this value decreases.
+      Updated after parse. */
   gpr_uint32 incoming_window;
   /** stream ops the transport user would like to send */
   grpc_stream_op_buffer *outgoing_sopb;
@@ -391,6 +403,8 @@ typedef struct {
   grpc_stream_op_buffer sopb;
   /** how strongly should we indicate closure with the next write */
   grpc_chttp2_send_closed send_closed;
+  /** how much window should we announce? */
+  gpr_uint32 announce_window;
 } grpc_chttp2_stream_writing;
 
 struct grpc_chttp2_stream_parsing {
@@ -501,7 +515,9 @@ void grpc_chttp2_list_add_writable_window_update_stream(
     grpc_chttp2_stream_global *stream_global);
 int grpc_chttp2_list_pop_writable_window_update_stream(
     grpc_chttp2_transport_global *transport_global,
-    grpc_chttp2_stream_global **stream_global);
+    grpc_chttp2_transport_writing *transport_writing,
+    grpc_chttp2_stream_global **stream_global,
+    grpc_chttp2_stream_writing **stream_writing);
 void grpc_chttp2_list_remove_writable_window_update_stream(
     grpc_chttp2_transport_global *transport_global,
     grpc_chttp2_stream_global *stream_global);
diff --git a/src/core/transport/chttp2/parsing.c b/src/core/transport/chttp2/parsing.c
index 9597395aab8a0cfaf6c2874da5a946bcd13b5f1a..aa32f2e44a166d91c94400fc4e200cfc5ec418f5 100644
--- a/src/core/transport/chttp2/parsing.c
+++ b/src/core/transport/chttp2/parsing.c
@@ -173,7 +173,14 @@ void grpc_chttp2_publish_reads(
       GRPC_CHTTP2_FLOWCTL_TRACE_STREAM(
           "parsed", transport_parsing, stream_parsing, incoming_window_delta,
           -(gpr_int64)stream_parsing->incoming_window_delta);
+      GRPC_CHTTP2_FLOWCTL_TRACE_STREAM(
+          "parsed", transport_parsing, stream_global, max_recv_bytes,
+          -(gpr_int64)stream_parsing->incoming_window_delta);
       stream_global->incoming_window -= stream_parsing->incoming_window_delta;
+      GPR_ASSERT(stream_global->max_recv_bytes >= 
+          stream_parsing->incoming_window_delta);
+      stream_global->max_recv_bytes -= 
+          stream_parsing->incoming_window_delta;
       stream_parsing->incoming_window_delta = 0;
       grpc_chttp2_list_add_writable_window_update_stream(transport_global,
                                                          stream_global);
@@ -594,7 +601,7 @@ static void on_header(void *tp, grpc_mdelem *md) {
                                       cached_timeout)) {
         gpr_log(GPR_ERROR, "Ignoring bad timeout value '%s'",
                 grpc_mdstr_as_c_string(md->value));
-        *cached_timeout = gpr_inf_future;
+        *cached_timeout = gpr_inf_future(GPR_CLOCK_REALTIME);
       }
       grpc_mdelem_set_user_data(md, free_timeout, cached_timeout);
     }
diff --git a/src/core/transport/chttp2/stream_encoder.c b/src/core/transport/chttp2/stream_encoder.c
index d553d80085ef5bc2ffc6c4aa7bc323567dc27301..d7fc2da5d3bcf162324c44263d8cb41a4018b650 100644
--- a/src/core/transport/chttp2/stream_encoder.c
+++ b/src/core/transport/chttp2/stream_encoder.c
@@ -585,7 +585,8 @@ void grpc_chttp2_encode(grpc_stream_op *ops, size_t ops_count, int eof,
           l->md = hpack_enc(compressor, l->md, &st);
           need_unref |= l->md != NULL;
         }
-        if (gpr_time_cmp(op->data.metadata.deadline, gpr_inf_future) != 0) {
+        if (gpr_time_cmp(op->data.metadata.deadline,
+                         gpr_inf_future(GPR_CLOCK_REALTIME)) != 0) {
           deadline_enc(compressor, op->data.metadata.deadline, &st);
         }
         curop++;
diff --git a/src/core/transport/chttp2/stream_lists.c b/src/core/transport/chttp2/stream_lists.c
index 4fea058c193dca2f72cd8272fe00f71f4b8f932f..590f6abfbc33632530102570bb9c5affd0aeb9ff 100644
--- a/src/core/transport/chttp2/stream_lists.c
+++ b/src/core/transport/chttp2/stream_lists.c
@@ -139,6 +139,7 @@ static void stream_list_add(grpc_chttp2_transport *t, grpc_chttp2_stream *s,
 void grpc_chttp2_list_add_writable_stream(
     grpc_chttp2_transport_global *transport_global,
     grpc_chttp2_stream_global *stream_global) {
+  GPR_ASSERT(stream_global->id != 0);
   stream_list_add(TRANSPORT_FROM_GLOBAL(transport_global),
                   STREAM_FROM_GLOBAL(stream_global), GRPC_CHTTP2_LIST_WRITABLE);
 }
@@ -204,6 +205,7 @@ int grpc_chttp2_list_pop_written_stream(
 void grpc_chttp2_list_add_writable_window_update_stream(
     grpc_chttp2_transport_global *transport_global,
     grpc_chttp2_stream_global *stream_global) {
+  GPR_ASSERT(stream_global->id != 0);
   stream_list_add(TRANSPORT_FROM_GLOBAL(transport_global),
                   STREAM_FROM_GLOBAL(stream_global),
                   GRPC_CHTTP2_LIST_WRITABLE_WINDOW_UPDATE);
@@ -211,11 +213,14 @@ void grpc_chttp2_list_add_writable_window_update_stream(
 
 int grpc_chttp2_list_pop_writable_window_update_stream(
     grpc_chttp2_transport_global *transport_global,
-    grpc_chttp2_stream_global **stream_global) {
+    grpc_chttp2_transport_writing *transport_writing,
+    grpc_chttp2_stream_global **stream_global,
+    grpc_chttp2_stream_writing **stream_writing) {
   grpc_chttp2_stream *stream;
   int r = stream_list_pop(TRANSPORT_FROM_GLOBAL(transport_global), &stream,
                           GRPC_CHTTP2_LIST_WRITABLE_WINDOW_UPDATE);
   *stream_global = &stream->global;
+  *stream_writing = &stream->writing;
   return r;
 }
 
diff --git a/src/core/transport/chttp2/timeout_encoding.c b/src/core/transport/chttp2/timeout_encoding.c
index 33915c4039f3bc51fd8defafb3c318e9ab87da8a..1dd768ada4006cb52c86d9090702817edfc65942 100644
--- a/src/core/transport/chttp2/timeout_encoding.c
+++ b/src/core/transport/chttp2/timeout_encoding.c
@@ -147,7 +147,7 @@ int grpc_chttp2_decode_timeout(const char *buffer, gpr_timespec *timeout) {
     gpr_uint32 xp = x * 10 + *p - '0';
     have_digit = 1;
     if (xp < x) {
-      *timeout = gpr_inf_future;
+      *timeout = gpr_inf_future(GPR_CLOCK_REALTIME);
       return 1;
     }
     x = xp;
@@ -159,22 +159,22 @@ int grpc_chttp2_decode_timeout(const char *buffer, gpr_timespec *timeout) {
   /* decode unit specifier */
   switch (*p) {
     case 'n':
-      *timeout = gpr_time_from_nanos(x);
+      *timeout = gpr_time_from_nanos(x, GPR_TIMESPAN);
       break;
     case 'u':
-      *timeout = gpr_time_from_micros(x);
+      *timeout = gpr_time_from_micros(x, GPR_TIMESPAN);
       break;
     case 'm':
-      *timeout = gpr_time_from_millis(x);
+      *timeout = gpr_time_from_millis(x, GPR_TIMESPAN);
       break;
     case 'S':
-      *timeout = gpr_time_from_seconds(x);
+      *timeout = gpr_time_from_seconds(x, GPR_TIMESPAN);
       break;
     case 'M':
-      *timeout = gpr_time_from_minutes(x);
+      *timeout = gpr_time_from_minutes(x, GPR_TIMESPAN);
       break;
     case 'H':
-      *timeout = gpr_time_from_hours(x);
+      *timeout = gpr_time_from_hours(x, GPR_TIMESPAN);
       break;
     default:
       return 0;
diff --git a/src/core/transport/chttp2/writing.c b/src/core/transport/chttp2/writing.c
index a78654334e17de4f92a613f839f3733235a6abda..d8ec117aa5d3a83e73b8b020a7ab53cac09024f1 100644
--- a/src/core/transport/chttp2/writing.c
+++ b/src/core/transport/chttp2/writing.c
@@ -66,11 +66,9 @@ int grpc_chttp2_unlocking_check_writes(
   /* for each grpc_chttp2_stream that's become writable, frame it's data
      (according to
      available window sizes) and add to the output buffer */
-  while (transport_global->outgoing_window &&
-         grpc_chttp2_list_pop_writable_stream(transport_global,
+  while (grpc_chttp2_list_pop_writable_stream(transport_global,
                                               transport_writing, &stream_global,
-                                              &stream_writing) &&
-         stream_global->outgoing_window > 0) {
+                                              &stream_writing)) {
     stream_writing->id = stream_global->id;
     window_delta = grpc_chttp2_preencode(
         stream_global->outgoing_sopb->ops, &stream_global->outgoing_sopb->nops,
@@ -106,20 +104,21 @@ int grpc_chttp2_unlocking_check_writes(
   /* for each grpc_chttp2_stream that wants to update its window, add that
    * window here */
   while (grpc_chttp2_list_pop_writable_window_update_stream(transport_global,
-                                                            &stream_global)) {
-    window_delta =
-        transport_global->settings[GRPC_LOCAL_SETTINGS]
-                                  [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE] -
-        stream_global->incoming_window;
-    if (!stream_global->read_closed && window_delta > 0) {
-      gpr_slice_buffer_add(
-          &transport_writing->outbuf,
-          grpc_chttp2_window_update_create(stream_global->id, window_delta));
+                                                            transport_writing,
+                                                            &stream_global,
+                                                            &stream_writing)) {
+    stream_writing->id = stream_global->id;
+    if (!stream_global->read_closed && stream_global->unannounced_incoming_window > 0) {
+      stream_writing->announce_window = stream_global->unannounced_incoming_window;
       GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("write", transport_global, stream_global,
-                                       incoming_window, window_delta);
-      stream_global->incoming_window += window_delta;
+                                       incoming_window, stream_global->unannounced_incoming_window);
+      GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("write", transport_global, stream_global,
+                                       unannounced_incoming_window, -(gpr_int64)stream_global->unannounced_incoming_window);
+      stream_global->incoming_window += stream_global->unannounced_incoming_window;
+      stream_global->unannounced_incoming_window = 0;
       grpc_chttp2_list_add_incoming_window_updated(transport_global,
                                                    stream_global);
+      grpc_chttp2_list_add_writing_stream(transport_writing, stream_writing);
     }
   }
 
@@ -169,10 +168,19 @@ static void finalize_outbuf(grpc_chttp2_transport_writing *transport_writing) {
 
   while (
       grpc_chttp2_list_pop_writing_stream(transport_writing, &stream_writing)) {
-    grpc_chttp2_encode(stream_writing->sopb.ops, stream_writing->sopb.nops,
-                       stream_writing->send_closed != GRPC_DONT_SEND_CLOSED,
-                       stream_writing->id, &transport_writing->hpack_compressor,
-                       &transport_writing->outbuf);
+    if (stream_writing->sopb.nops > 0 || stream_writing->send_closed != GRPC_DONT_SEND_CLOSED) {
+      grpc_chttp2_encode(stream_writing->sopb.ops, stream_writing->sopb.nops,
+                         stream_writing->send_closed != GRPC_DONT_SEND_CLOSED,
+                         stream_writing->id, &transport_writing->hpack_compressor,
+                         &transport_writing->outbuf);
+    }
+    if (stream_writing->announce_window > 0) {
+      gpr_slice_buffer_add(
+          &transport_writing->outbuf,
+          grpc_chttp2_window_update_create(
+              stream_writing->id, stream_writing->announce_window));
+      stream_writing->announce_window = 0;
+    }
     stream_writing->sopb.nops = 0;
     if (stream_writing->send_closed == GRPC_SEND_CLOSED_WITH_RST_STREAM) {
       gpr_slice_buffer_add(&transport_writing->outbuf,
@@ -197,7 +205,8 @@ void grpc_chttp2_cleanup_writing(
 
   while (grpc_chttp2_list_pop_written_stream(
       transport_global, transport_writing, &stream_global, &stream_writing)) {
-    if (stream_global->outgoing_sopb->nops == 0) {
+    if (stream_global->outgoing_sopb != NULL &&
+        stream_global->outgoing_sopb->nops == 0) {
       stream_global->outgoing_sopb = NULL;
       grpc_chttp2_schedule_closure(transport_global,
                                    stream_global->send_done_closure, 1);
diff --git a/src/core/transport/chttp2_transport.c b/src/core/transport/chttp2_transport.c
index ac399e4a1d0e52f48db16316fe61b3d1810d686a..c923d5e42fb2b521dc845d9cdaef4efdeaadbb7b 100644
--- a/src/core/transport/chttp2_transport.c
+++ b/src/core/transport/chttp2_transport.c
@@ -358,7 +358,9 @@ static int init_stream(grpc_transport *gt, grpc_stream *gs,
     s->global.outgoing_window =
         t->global.settings[GRPC_PEER_SETTINGS]
                           [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
-    s->parsing.incoming_window = s->global.incoming_window =
+    s->global.max_recv_bytes = 
+        s->parsing.incoming_window = 
+        s->global.incoming_window =
         t->global.settings[GRPC_SENT_SETTINGS]
                           [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
     *t->accepting_stream = s;
@@ -562,6 +564,8 @@ static void maybe_start_some_streams(
     stream_global->incoming_window =
         transport_global->settings[GRPC_SENT_SETTINGS]
                                   [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
+    stream_global->max_recv_bytes = 
+        GPR_MAX(stream_global->incoming_window, stream_global->max_recv_bytes);
     grpc_chttp2_stream_map_add(
         &TRANSPORT_FROM_GLOBAL(transport_global)->new_stream_map,
         stream_global->id, STREAM_FROM_GLOBAL(stream_global));
@@ -570,6 +574,9 @@ static void maybe_start_some_streams(
     grpc_chttp2_list_add_incoming_window_updated(transport_global,
                                                  stream_global);
     grpc_chttp2_list_add_writable_stream(transport_global, stream_global);
+    grpc_chttp2_list_add_writable_window_update_stream(transport_global,
+                                                       stream_global);
+
   }
   /* cancel out streams that will never be started */
   while (transport_global->next_stream_id >= MAX_CLIENT_STREAM_ID &&
@@ -620,12 +627,23 @@ static void perform_stream_op_locked(
     stream_global->publish_sopb = op->recv_ops;
     stream_global->publish_sopb->nops = 0;
     stream_global->publish_state = op->recv_state;
+    if (stream_global->max_recv_bytes < op->max_recv_bytes) {
+      GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("op", transport_global, stream_global,
+          max_recv_bytes, op->max_recv_bytes - stream_global->max_recv_bytes);
+      GRPC_CHTTP2_FLOWCTL_TRACE_STREAM(
+          "op", transport_global, stream_global, unannounced_incoming_window,
+          op->max_recv_bytes - stream_global->max_recv_bytes);
+      stream_global->unannounced_incoming_window += op->max_recv_bytes - stream_global->max_recv_bytes;
+      stream_global->max_recv_bytes = op->max_recv_bytes;
+    }
     grpc_chttp2_incoming_metadata_live_op_buffer_end(
         &stream_global->outstanding_metadata);
-    grpc_chttp2_list_add_read_write_state_changed(transport_global,
-                                                  stream_global);
-    grpc_chttp2_list_add_writable_window_update_stream(transport_global,
-                                                       stream_global);
+    if (stream_global->id != 0) {
+      grpc_chttp2_list_add_read_write_state_changed(transport_global,
+                                                    stream_global);
+      grpc_chttp2_list_add_writable_window_update_stream(transport_global,
+                                                         stream_global);
+    }
   }
 
   if (op->bind_pollset) {
@@ -1038,7 +1056,7 @@ void grpc_chttp2_flowctl_trace(const char *file, int line, const char *reason,
     identifier = gpr_strdup(context_scope);
   }
   gpr_log(GPR_INFO,
-          "FLOWCTL: %s %-10s %8s %-23s %8lld %c %8lld = %8lld %-10s [%s:%d]",
+          "FLOWCTL: %s %-10s %8s %-27s %8lld %c %8lld = %8lld %-10s [%s:%d]",
           is_client ? "client" : "server", identifier, context_thread, var,
           current_value, delta < 0 ? '-' : '+', delta < 0 ? -delta : delta,
           current_value + delta, reason, file, line);
diff --git a/src/core/transport/stream_op.c b/src/core/transport/stream_op.c
index fdb50c6b71973dff35b0065939f693c2fa05314a..71061fe0c78e9527677e161719bc63098f4cd0cf 100644
--- a/src/core/transport/stream_op.c
+++ b/src/core/transport/stream_op.c
@@ -205,7 +205,7 @@ void grpc_metadata_batch_assert_ok(grpc_metadata_batch *batch) {
 void grpc_metadata_batch_init(grpc_metadata_batch *batch) {
   batch->list.head = batch->list.tail = batch->garbage.head = batch->garbage.tail =
       NULL;
-  batch->deadline = gpr_inf_future;
+  batch->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
 }
 
 void grpc_metadata_batch_destroy(grpc_metadata_batch *batch) {
diff --git a/src/core/transport/transport.h b/src/core/transport/transport.h
index 1429737721c85af08a3e8399851cdaebc7cc4a78..64503604ee106ff5b5a7b19be75268c78c223b40 100644
--- a/src/core/transport/transport.h
+++ b/src/core/transport/transport.h
@@ -72,6 +72,10 @@ typedef struct grpc_transport_stream_op {
 
   grpc_stream_op_buffer *recv_ops;
   grpc_stream_state *recv_state;
+  /** The number of bytes this peer is currently prepared to receive.
+      These bytes will be eventually used to replenish per-stream flow control
+      windows. */
+  gpr_uint32 max_recv_bytes;
   grpc_iomgr_closure *on_done_recv;
 
   grpc_pollset *bind_pollset;
diff --git a/src/core/transport/transport_op_string.c b/src/core/transport/transport_op_string.c
index 0da396a32013c4b9730915488c1d1c56a9950017..9d127c5472dbb9a58c4ab7d2a1b9c28286f63a00 100644
--- a/src/core/transport/transport_op_string.c
+++ b/src/core/transport/transport_op_string.c
@@ -61,7 +61,7 @@ static void put_metadata_list(gpr_strvec *b, grpc_metadata_batch md) {
     if (m != md.list.head) gpr_strvec_add(b, gpr_strdup(", "));
     put_metadata(b, m->md);
   }
-  if (gpr_time_cmp(md.deadline, gpr_inf_future) != 0) {
+  if (gpr_time_cmp(md.deadline, gpr_inf_future(GPR_CLOCK_REALTIME)) != 0) {
     char *tmp;
     gpr_asprintf(&tmp, " deadline=%d.%09d", md.deadline.tv_sec,
                  md.deadline.tv_nsec);
@@ -128,7 +128,8 @@ char *grpc_transport_stream_op_string(grpc_transport_stream_op *op) {
   if (op->recv_ops) {
     if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
     first = 0;
-    gpr_strvec_add(&b, gpr_strdup("RECV"));
+    gpr_asprintf(&tmp, "RECV:max_recv_bytes=%d", op->max_recv_bytes);
+    gpr_strvec_add(&b, tmp);
   }
 
   if (op->bind_pollset) {
diff --git a/src/cpp/client/client_context.cc b/src/cpp/client/client_context.cc
index c68f6dd9f8da1fa03b1533349b0d9e9e22dd4117..372f3e27eccb35e06b6c33c6decbb5ef6541bd19 100644
--- a/src/cpp/client/client_context.cc
+++ b/src/cpp/client/client_context.cc
@@ -44,7 +44,7 @@ ClientContext::ClientContext()
     : initial_metadata_received_(false),
       call_(nullptr),
       cq_(nullptr),
-      deadline_(gpr_inf_future) {}
+      deadline_(gpr_inf_future(GPR_CLOCK_REALTIME)) {}
 
 ClientContext::~ClientContext() {
   if (call_) {
@@ -53,8 +53,8 @@ ClientContext::~ClientContext() {
   if (cq_) {
     // Drain cq_.
     grpc_completion_queue_shutdown(cq_);
-    while (grpc_completion_queue_next(cq_, gpr_inf_future).type !=
-           GRPC_QUEUE_SHUTDOWN)
+    while (grpc_completion_queue_next(cq_, gpr_inf_future(GPR_CLOCK_REALTIME))
+               .type != GRPC_QUEUE_SHUTDOWN)
       ;
     grpc_completion_queue_destroy(cq_);
   }
diff --git a/src/cpp/client/secure_credentials.cc b/src/cpp/client/secure_credentials.cc
index 4d200908fb2c76ce66960f585bf5cbcd4822bad5..01c7f14f1a05bd9bbd23d60a72ea2d0bef05c1e6 100644
--- a/src/cpp/client/secure_credentials.cc
+++ b/src/cpp/client/secure_credentials.cc
@@ -92,7 +92,8 @@ std::shared_ptr<Credentials> ServiceAccountCredentials(
             "with non-positive lifetime");
     return WrapCredentials(nullptr);
   }
-  gpr_timespec lifetime = gpr_time_from_seconds(token_lifetime_seconds);
+  gpr_timespec lifetime =
+      gpr_time_from_seconds(token_lifetime_seconds, GPR_TIMESPAN);
   return WrapCredentials(grpc_service_account_credentials_create(
       json_key.c_str(), scope.c_str(), lifetime));
 }
@@ -105,7 +106,8 @@ std::shared_ptr<Credentials> JWTCredentials(const grpc::string& json_key,
             "Trying to create JWTCredentials with non-positive lifetime");
     return WrapCredentials(nullptr);
   }
-  gpr_timespec lifetime = gpr_time_from_seconds(token_lifetime_seconds);
+  gpr_timespec lifetime =
+      gpr_time_from_seconds(token_lifetime_seconds, GPR_TIMESPAN);
   return WrapCredentials(
       grpc_jwt_credentials_create(json_key.c_str(), lifetime));
 }
diff --git a/src/cpp/common/auth_property_iterator.cc b/src/cpp/common/auth_property_iterator.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e706c6c921dd34f4581178c961255802b3428928
--- /dev/null
+++ b/src/cpp/common/auth_property_iterator.cc
@@ -0,0 +1,87 @@
+/*
+ *
+ * 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 <grpc++/auth_property_iterator.h>
+
+#include <grpc/grpc_security.h>
+
+namespace grpc {
+
+AuthPropertyIterator::AuthPropertyIterator()
+    : property_(nullptr), ctx_(nullptr), index_(0), name_(nullptr) {}
+
+AuthPropertyIterator::AuthPropertyIterator(
+    const grpc_auth_property* property, const grpc_auth_property_iterator* iter)
+    : property_(property),
+      ctx_(iter->ctx),
+      index_(iter->index),
+      name_(iter->name) {}
+
+AuthPropertyIterator::~AuthPropertyIterator() {}
+
+AuthPropertyIterator& AuthPropertyIterator::operator++() {
+  grpc_auth_property_iterator iter = {ctx_, index_, name_};
+  property_ = grpc_auth_property_iterator_next(&iter);
+  ctx_ = iter.ctx;
+  index_ = iter.index;
+  name_ = iter.name;
+  return *this;
+}
+
+AuthPropertyIterator AuthPropertyIterator::operator++(int) {
+  AuthPropertyIterator tmp(*this);
+  operator++();
+  return tmp;
+}
+
+bool AuthPropertyIterator::operator==(
+    const AuthPropertyIterator& rhs) const {
+  if (property_ == nullptr || rhs.property_ == nullptr) {
+    return property_ == rhs.property_;
+  } else {
+    return index_ == rhs.index_;
+  }
+}
+
+bool AuthPropertyIterator::operator!=(
+    const AuthPropertyIterator& rhs) const {
+  return !operator==(rhs);
+}
+
+const AuthProperty AuthPropertyIterator::operator*() {
+  return std::make_pair<grpc::string, grpc::string>(
+      grpc::string(property_->name),
+      grpc::string(property_->value, property_->value_length));
+}
+
+}  // namespace grpc
diff --git a/src/cpp/common/completion_queue.cc b/src/cpp/common/completion_queue.cc
index b2dd1acdca2de973e07dd2571df5f2d66bc77601..593963f672faf93917ef54f1491288f105282fdc 100644
--- a/src/cpp/common/completion_queue.cc
+++ b/src/cpp/common/completion_queue.cc
@@ -70,7 +70,8 @@ CompletionQueue::NextStatus CompletionQueue::AsyncNextInternal(
 }
 
 bool CompletionQueue::Pluck(CompletionQueueTag* tag) {
-  auto ev = grpc_completion_queue_pluck(cq_, tag, gpr_inf_future);
+  auto ev =
+      grpc_completion_queue_pluck(cq_, tag, gpr_inf_future(GPR_CLOCK_REALTIME));
   bool ok = ev.success != 0;
   void* ignored = tag;
   GPR_ASSERT(tag->FinalizeResult(&ignored, &ok));
@@ -80,7 +81,8 @@ bool CompletionQueue::Pluck(CompletionQueueTag* tag) {
 }
 
 void CompletionQueue::TryPluck(CompletionQueueTag* tag) {
-  auto ev = grpc_completion_queue_pluck(cq_, tag, gpr_time_0);
+  auto ev =
+      grpc_completion_queue_pluck(cq_, tag, gpr_time_0(GPR_CLOCK_REALTIME));
   if (ev.type == GRPC_QUEUE_TIMEOUT) return;
   bool ok = ev.success != 0;
   void* ignored = tag;
diff --git a/src/cpp/common/secure_auth_context.cc b/src/cpp/common/secure_auth_context.cc
index 451372365366d960db744d9f6be48390acdaa658..87d7bab75c6277599eb387af13365de59fbab259 100644
--- a/src/cpp/common/secure_auth_context.cc
+++ b/src/cpp/common/secure_auth_context.cc
@@ -77,4 +77,20 @@ std::vector<grpc::string> SecureAuthContext::FindPropertyValues(
   return values;
 }
 
+AuthPropertyIterator SecureAuthContext::begin() const {
+  if (ctx_) {
+    grpc_auth_property_iterator iter =
+        grpc_auth_context_property_iterator(ctx_);
+    const grpc_auth_property* property =
+        grpc_auth_property_iterator_next(&iter);
+    return AuthPropertyIterator(property, &iter);
+  } else {
+    return end();
+  }
+}
+
+AuthPropertyIterator SecureAuthContext::end() const {
+  return AuthPropertyIterator();
+}
+
 }  // namespace grpc
diff --git a/src/cpp/common/secure_auth_context.h b/src/cpp/common/secure_auth_context.h
index bba46803cd6861fc8599481e50089dcf630a81d0..264ed620a30ef3bffa65e9ed9c0c568db5808e02 100644
--- a/src/cpp/common/secure_auth_context.h
+++ b/src/cpp/common/secure_auth_context.h
@@ -53,6 +53,10 @@ class SecureAuthContext GRPC_FINAL : public AuthContext {
   std::vector<grpc::string> FindPropertyValues(const grpc::string& name) const
       GRPC_OVERRIDE;
 
+  AuthPropertyIterator begin() const GRPC_OVERRIDE;
+
+  AuthPropertyIterator end() const GRPC_OVERRIDE;
+
  private:
   grpc_auth_context* ctx_;
 };
diff --git a/src/cpp/server/create_default_thread_pool.cc b/src/cpp/server/create_default_thread_pool.cc
index 89c1d7e929559681971bc775ce341f27b46f7a63..cc182f59f4e36d3555f1021765e036110d93b6cb 100644
--- a/src/cpp/server/create_default_thread_pool.cc
+++ b/src/cpp/server/create_default_thread_pool.cc
@@ -32,7 +32,7 @@
  */
 
 #include <grpc/support/cpu.h>
-#include "src/cpp/server/thread_pool.h"
+#include <grpc++/fixed_size_thread_pool.h>
 
 #ifndef GRPC_CUSTOM_DEFAULT_THREAD_POOL
 
@@ -41,7 +41,7 @@ namespace grpc {
 ThreadPoolInterface* CreateDefaultThreadPool() {
    int cores = gpr_cpu_num_cores();
    if (!cores) cores = 4;
-   return new ThreadPool(cores);
+   return new FixedSizeThreadPool(cores);
 }
 
 }  // namespace grpc
diff --git a/src/cpp/server/thread_pool.cc b/src/cpp/server/fixed_size_thread_pool.cc
similarity index 86%
rename from src/cpp/server/thread_pool.cc
rename to src/cpp/server/fixed_size_thread_pool.cc
index 118cabcb6127dc86800850d6197e58ef82aeadaa..bafbc5802a47a9fed72a3e2ccb6a5e3a1d0ed97d 100644
--- a/src/cpp/server/thread_pool.cc
+++ b/src/cpp/server/fixed_size_thread_pool.cc
@@ -33,12 +33,11 @@
 
 #include <grpc++/impl/sync.h>
 #include <grpc++/impl/thd.h>
-
-#include "src/cpp/server/thread_pool.h"
+#include <grpc++/fixed_size_thread_pool.h>
 
 namespace grpc {
 
-void ThreadPool::ThreadFunc() {
+void FixedSizeThreadPool::ThreadFunc() {
   for (;;) {
     // Wait until work is available or we are shutting down.
     grpc::unique_lock<grpc::mutex> lock(mu_);
@@ -58,13 +57,14 @@ void ThreadPool::ThreadFunc() {
   }
 }
 
-ThreadPool::ThreadPool(int num_threads) : shutdown_(false) {
+FixedSizeThreadPool::FixedSizeThreadPool(int num_threads) : shutdown_(false) {
   for (int i = 0; i < num_threads; i++) {
-    threads_.push_back(new grpc::thread(&ThreadPool::ThreadFunc, this));
+    threads_.push_back(
+        new grpc::thread(&FixedSizeThreadPool::ThreadFunc, this));
   }
 }
 
-ThreadPool::~ThreadPool() {
+FixedSizeThreadPool::~FixedSizeThreadPool() {
   {
     grpc::lock_guard<grpc::mutex> lock(mu_);
     shutdown_ = true;
@@ -76,7 +76,7 @@ ThreadPool::~ThreadPool() {
   }
 }
 
-void ThreadPool::ScheduleCallback(const std::function<void()>& callback) {
+void FixedSizeThreadPool::Add(const std::function<void()>& callback) {
   grpc::lock_guard<grpc::mutex> lock(mu_);
   callbacks_.push(callback);
   cv_.notify_one();
diff --git a/src/cpp/server/server.cc b/src/cpp/server/server.cc
index e6761d6244257df31f814de08b0449bbadd591fd..ab87b22f5fbe6a5094c980f30a2a2a5b5eff0671 100644
--- a/src/cpp/server/server.cc
+++ b/src/cpp/server/server.cc
@@ -383,7 +383,7 @@ void Server::ScheduleCallback() {
     grpc::unique_lock<grpc::mutex> lock(mu_);
     num_running_cb_++;
   }
-  thread_pool_->ScheduleCallback(std::bind(&Server::RunRpc, this));
+  thread_pool_->Add(std::bind(&Server::RunRpc, this));
 }
 
 void Server::RunRpc() {
diff --git a/src/cpp/server/server_builder.cc b/src/cpp/server/server_builder.cc
index 86c78f05ff91a2d51e9ad62c677abff39cc01d6e..f723d4611ae6e0b843d057c18595aa71a8307297 100644
--- a/src/cpp/server/server_builder.cc
+++ b/src/cpp/server/server_builder.cc
@@ -37,7 +37,7 @@
 #include <grpc/support/log.h>
 #include <grpc++/impl/service_type.h>
 #include <grpc++/server.h>
-#include "src/cpp/server/thread_pool.h"
+#include <grpc++/thread_pool_interface.h>
 
 namespace grpc {
 
diff --git a/src/cpp/server/server_context.cc b/src/cpp/server/server_context.cc
index 0be77138d1660b0692a61bff2195a22210e94cd1..3b8a02699643c0dd179e7796532881f1190da563 100644
--- a/src/cpp/server/server_context.cc
+++ b/src/cpp/server/server_context.cc
@@ -144,7 +144,7 @@ void ServerContext::AddTrailingMetadata(const grpc::string& key,
   trailing_metadata_.insert(std::make_pair(key, value));
 }
 
-bool ServerContext::IsCancelled() {
+bool ServerContext::IsCancelled() const {
   return completion_op_ && completion_op_->CheckCancelled(cq_);
 }
 
diff --git a/src/cpp/util/time.cc b/src/cpp/util/time.cc
index fd94d00b329f824d0741dc43f9ca07afae19361e..a814cad452e7f323f77291f385279fccd952aa21 100644
--- a/src/cpp/util/time.cc
+++ b/src/cpp/util/time.cc
@@ -51,13 +51,15 @@ void Timepoint2Timespec(const system_clock::time_point& from,
   system_clock::duration deadline = from.time_since_epoch();
   seconds secs = duration_cast<seconds>(deadline);
   if (from == system_clock::time_point::max() ||
-      secs.count() >= gpr_inf_future.tv_sec || secs.count() < 0) {
-    *to = gpr_inf_future;
+      secs.count() >= gpr_inf_future(GPR_CLOCK_REALTIME).tv_sec ||
+      secs.count() < 0) {
+    *to = gpr_inf_future(GPR_CLOCK_REALTIME);
     return;
   }
   nanoseconds nsecs = duration_cast<nanoseconds>(deadline - secs);
   to->tv_sec = secs.count();
   to->tv_nsec = nsecs.count();
+  to->clock_type = GPR_CLOCK_REALTIME;
 }
 
 void TimepointHR2Timespec(const high_resolution_clock::time_point& from,
@@ -65,17 +67,19 @@ void TimepointHR2Timespec(const high_resolution_clock::time_point& from,
   high_resolution_clock::duration deadline = from.time_since_epoch();
   seconds secs = duration_cast<seconds>(deadline);
   if (from == high_resolution_clock::time_point::max() ||
-      secs.count() >= gpr_inf_future.tv_sec || secs.count() < 0) {
-    *to = gpr_inf_future;
+      secs.count() >= gpr_inf_future(GPR_CLOCK_REALTIME).tv_sec ||
+      secs.count() < 0) {
+    *to = gpr_inf_future(GPR_CLOCK_REALTIME);
     return;
   }
   nanoseconds nsecs = duration_cast<nanoseconds>(deadline - secs);
   to->tv_sec = secs.count();
   to->tv_nsec = nsecs.count();
+  to->clock_type = GPR_CLOCK_REALTIME;
 }
 
 system_clock::time_point Timespec2Timepoint(gpr_timespec t) {
-  if (gpr_time_cmp(t, gpr_inf_future) == 0) {
+  if (gpr_time_cmp(t, gpr_inf_future(GPR_CLOCK_REALTIME)) == 0) {
     return system_clock::time_point::max();
   }
   system_clock::time_point tp;
diff --git a/src/csharp/Grpc.Auth/OAuth2InterceptorFactory.cs b/src/csharp/Grpc.Auth/OAuth2InterceptorFactory.cs
index ca384d1a6e444fe2f513fc84289d7d0d8eeefb56..420c4cb5371f67740223025d4428574ec0cdb0d8 100644
--- a/src/csharp/Grpc.Auth/OAuth2InterceptorFactory.cs
+++ b/src/csharp/Grpc.Auth/OAuth2InterceptorFactory.cs
@@ -52,10 +52,10 @@ namespace Grpc.Auth
         /// <summary>
         /// Creates OAuth2 interceptor.
         /// </summary>
-        public static HeaderInterceptorDelegate Create(GoogleCredential googleCredential)
+        public static MetadataInterceptorDelegate Create(GoogleCredential googleCredential)
         {
             var interceptor = new OAuth2Interceptor(googleCredential.InternalCredential, SystemClock.Default);
-            return new HeaderInterceptorDelegate(interceptor.InterceptHeaders);
+            return new MetadataInterceptorDelegate(interceptor.InterceptHeaders);
         }
 
         /// <summary>
@@ -94,10 +94,10 @@ namespace Grpc.Auth
                 return credential.Token.AccessToken;
             }
 
-            public void InterceptHeaders(Metadata.Builder headerBuilder)
+            public void InterceptHeaders(Metadata metadata)
             {
                 var accessToken = GetAccessToken(CancellationToken.None);
-                headerBuilder.Add(new Metadata.MetadataEntry(AuthorizationHeader, Schema + " " + accessToken));
+                metadata.Add(new Metadata.Entry(AuthorizationHeader, Schema + " " + accessToken));
             }
         }
     }
diff --git a/src/csharp/Grpc.Core.Tests/Internal/MetadataArraySafeHandleTest.cs b/src/csharp/Grpc.Core.Tests/Internal/MetadataArraySafeHandleTest.cs
index 2f6013483d98bc63b07149e1e836b6bb1695cb93..320423b245d2dd68ec175867efc21b6707c2d5a3 100644
--- a/src/csharp/Grpc.Core.Tests/Internal/MetadataArraySafeHandleTest.cs
+++ b/src/csharp/Grpc.Core.Tests/Internal/MetadataArraySafeHandleTest.cs
@@ -44,17 +44,17 @@ namespace Grpc.Core.Internal.Tests
         [Test]
         public void CreateEmptyAndDestroy()
         {
-            var metadata = Metadata.CreateBuilder().Build();
-            var nativeMetadata = MetadataArraySafeHandle.Create(metadata);
+            var nativeMetadata = MetadataArraySafeHandle.Create(new Metadata());
             nativeMetadata.Dispose();
         }
 
         [Test]
         public void CreateAndDestroy()
         {
-            var metadata = Metadata.CreateBuilder()
-                .Add(new Metadata.MetadataEntry("host", "somehost"))
-                .Add(new Metadata.MetadataEntry("header2", "header value")).Build();
+            var metadata = new Metadata {
+                new Metadata.Entry("host", "somehost"),
+                new Metadata.Entry("header2", "header value"),
+            };
             var nativeMetadata = MetadataArraySafeHandle.Create(metadata);
             nativeMetadata.Dispose();
         }
diff --git a/src/csharp/Grpc.Core.Tests/TimespecTest.cs b/src/csharp/Grpc.Core.Tests/TimespecTest.cs
index f5bae6d93552c670bf4f919dd654d2c2eecd480d..5831121add39f69e30eb5dd41da3e046beeee003 100644
--- a/src/csharp/Grpc.Core.Tests/TimespecTest.cs
+++ b/src/csharp/Grpc.Core.Tests/TimespecTest.cs
@@ -61,28 +61,28 @@ namespace Grpc.Core.Internal.Tests
         [Test]
         public void Add()
         {
-            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = new IntPtr(123456789) };
+            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = 123456789 };
             var result = t.Add(TimeSpan.FromTicks(TimeSpan.TicksPerSecond * 10));
             Assert.AreEqual(result.tv_sec, new IntPtr(12355));
-            Assert.AreEqual(result.tv_nsec, new IntPtr(123456789));
+            Assert.AreEqual(result.tv_nsec, 123456789);
         }
 
         [Test]
         public void Add_Nanos()
         {
-            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = new IntPtr(123456789) };
+            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = 123456789 };
             var result = t.Add(TimeSpan.FromTicks(10));
             Assert.AreEqual(result.tv_sec, new IntPtr(12345));
-            Assert.AreEqual(result.tv_nsec, new IntPtr(123456789 + 1000));
+            Assert.AreEqual(result.tv_nsec, 123456789 + 1000);
         }
 
         [Test]
         public void Add_NanosOverflow()
         {
-            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = new IntPtr(999999999) };
+            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = 999999999 };
             var result = t.Add(TimeSpan.FromTicks(TimeSpan.TicksPerSecond * 10 + 10));
             Assert.AreEqual(result.tv_sec, new IntPtr(12356));
-            Assert.AreEqual(result.tv_nsec, new IntPtr(999));
+            Assert.AreEqual(result.tv_nsec, 999);
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/Calls.cs b/src/csharp/Grpc.Core/Calls.cs
index 750282258f2ca358bfabf5d0994873594bf6dfdf..9e95182c7208c8713049a3cfeb0a9af1231c630d 100644
--- a/src/csharp/Grpc.Core/Calls.cs
+++ b/src/csharp/Grpc.Core/Calls.cs
@@ -39,7 +39,7 @@ using Grpc.Core.Internal;
 namespace Grpc.Core
 {
     /// <summary>
-    /// Helper methods for generated client stubs to make RPC calls.
+    /// Helper methods for generated clients to make RPC calls.
     /// </summary>
     public static class Calls
     {
diff --git a/src/csharp/Grpc.Core/Stub/AbstractStub.cs b/src/csharp/Grpc.Core/ClientBase.cs
similarity index 70%
rename from src/csharp/Grpc.Core/Stub/AbstractStub.cs
rename to src/csharp/Grpc.Core/ClientBase.cs
index 4a8b2543579f8e64b79c89b95d264ce30944b301..a099f96aeab4c31fceccf7203bc90f4e12a6f093 100644
--- a/src/csharp/Grpc.Core/Stub/AbstractStub.cs
+++ b/src/csharp/Grpc.Core/ClientBase.cs
@@ -32,26 +32,39 @@
 #endregion
 
 using System;
+using System.Collections.Generic;
+
 using Grpc.Core.Internal;
 
 namespace Grpc.Core
 {
-    // TODO: support adding timeout to methods.
+    public delegate void MetadataInterceptorDelegate(Metadata metadata);
+
     /// <summary>
-    /// Base for client-side stubs.
+    /// Base class for client-side stubs.
     /// </summary>
-    public abstract class AbstractStub<TStub, TConfig>
-        where TConfig : StubConfiguration
+    public abstract class ClientBase
     {
         readonly Channel channel;
-        readonly TConfig config;
 
-        public AbstractStub(Channel channel, TConfig config)
+        public ClientBase(Channel channel)
         {
             this.channel = channel;
-            this.config = config;
         }
 
+        /// <summary>
+        /// Can be used to register a custom header (initial metadata) interceptor.
+        /// The delegate each time before a new call on this client is started.
+        /// </summary>
+        public MetadataInterceptorDelegate HeaderInterceptor
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// Channel associated with this client.
+        /// </summary>
         public Channel Channel
         {
             get
@@ -63,13 +76,19 @@ namespace Grpc.Core
         /// <summary>
         /// Creates a new call to given method.
         /// </summary>
-        protected Call<TRequest, TResponse> CreateCall<TRequest, TResponse>(string serviceName, Method<TRequest, TResponse> method)
+        protected Call<TRequest, TResponse> CreateCall<TRequest, TResponse>(string serviceName, Method<TRequest, TResponse> method, Metadata metadata)
             where TRequest : class
             where TResponse : class
         {
-            var headerBuilder = Metadata.CreateBuilder();
-            config.HeaderInterceptor(headerBuilder);
-            return new Call<TRequest, TResponse>(serviceName, method, channel, headerBuilder.Build());
+            var interceptor = HeaderInterceptor;
+            if (interceptor != null)
+            {
+                metadata = metadata ?? new Metadata();
+                interceptor(metadata);
+                metadata.Freeze();
+            }
+            metadata = metadata ?? Metadata.Empty;
+            return new Call<TRequest, TResponse>(serviceName, method, channel, metadata);
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/Grpc.Core.csproj b/src/csharp/Grpc.Core/Grpc.Core.csproj
index cde42c3b7e26fe59c60696162df539014523f6db..a227fe547789761b1e461d687ecff06cdcd8024f 100644
--- a/src/csharp/Grpc.Core/Grpc.Core.csproj
+++ b/src/csharp/Grpc.Core/Grpc.Core.csproj
@@ -88,8 +88,7 @@
     <Compile Include="ServerCredentials.cs" />
     <Compile Include="Metadata.cs" />
     <Compile Include="Internal\MetadataArraySafeHandle.cs" />
-    <Compile Include="Stub\AbstractStub.cs" />
-    <Compile Include="Stub\StubConfiguration.cs" />
+    <Compile Include="ClientBase.cs" />
     <Compile Include="Internal\ServerCalls.cs" />
     <Compile Include="ServerMethods.cs" />
     <Compile Include="Internal\ClientRequestStream.cs" />
diff --git a/src/csharp/Grpc.Core/Internal/Enums.cs b/src/csharp/Grpc.Core/Internal/Enums.cs
index af11b5b9f3c5f570dbe44679dcf308604958f07c..185098160b6e5d065ec4fec14cca9ae68c12d726 100644
--- a/src/csharp/Grpc.Core/Internal/Enums.cs
+++ b/src/csharp/Grpc.Core/Internal/Enums.cs
@@ -90,4 +90,19 @@ namespace Grpc.Core.Internal
         /* operation completion */
         OpComplete
     }
+
+    /// <summary>
+    /// gpr_clock_type from grpc/support/time.h
+    /// </summary>
+    internal enum GPRClockType
+    {
+        /* Monotonic clock */
+        Monotonic,
+
+        /* Realtime clock */
+        Realtime,
+
+        /* Timespan - the distance between two time points */
+        Timespan
+    }
 }
diff --git a/src/csharp/Grpc.Core/Internal/MetadataArraySafeHandle.cs b/src/csharp/Grpc.Core/Internal/MetadataArraySafeHandle.cs
index c9c4d954c91a8fc847b8b3c4c4ddeb9bf39dae6d..80aa7f5603464f8e2f62ca33c0d09c902cd05d7b 100644
--- a/src/csharp/Grpc.Core/Internal/MetadataArraySafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/MetadataArraySafeHandle.cs
@@ -54,11 +54,11 @@ namespace Grpc.Core.Internal
 
         public static MetadataArraySafeHandle Create(Metadata metadata)
         {
-            var entries = metadata.Entries;
-            var metadataArray = grpcsharp_metadata_array_create(new UIntPtr((ulong)entries.Count));
-            for (int i = 0; i < entries.Count; i++)
+            // TODO(jtattermusch): we might wanna check that the metadata is readonly 
+            var metadataArray = grpcsharp_metadata_array_create(new UIntPtr((ulong)metadata.Count));
+            for (int i = 0; i < metadata.Count; i++)
             {
-                grpcsharp_metadata_array_add(metadataArray, entries[i].Key, entries[i].ValueBytes, new UIntPtr((ulong)entries[i].ValueBytes.Length));
+                grpcsharp_metadata_array_add(metadataArray, metadata[i].Key, metadata[i].ValueBytes, new UIntPtr((ulong)metadata[i].ValueBytes.Length));
             }
             return metadataArray;
         }
diff --git a/src/csharp/Grpc.Core/Internal/Timespec.cs b/src/csharp/Grpc.Core/Internal/Timespec.cs
index 775af27db90a19fec62b6d47e9985a4745eae61f..de783f5a4bcfe0d1e6252f6501fe5f4b339a2cb4 100644
--- a/src/csharp/Grpc.Core/Internal/Timespec.cs
+++ b/src/csharp/Grpc.Core/Internal/Timespec.cs
@@ -55,7 +55,8 @@ namespace Grpc.Core.Internal
         // NOTE: on linux 64bit  sizeof(gpr_timespec) = 16, on windows 32bit sizeof(gpr_timespec) = 8
         // so IntPtr seems to have the right size to work on both.
         public System.IntPtr tv_sec;
-        public System.IntPtr tv_nsec;
+        public int tv_nsec;
+        public GPRClockType clock_type;
 
         /// <summary>
         /// Timespec a long time in the future.
@@ -99,12 +100,13 @@ namespace Grpc.Core.Internal
 
         public Timespec Add(TimeSpan timeSpan)
         {
-            long nanos = tv_nsec.ToInt64() + (timeSpan.Ticks % TimeSpan.TicksPerSecond) * NanosPerTick;
+            long nanos = (long)tv_nsec + (timeSpan.Ticks % TimeSpan.TicksPerSecond) * NanosPerTick;
             long overflow_sec = (nanos > NanosPerSecond) ? 1 : 0;
 
             Timespec result;
-            result.tv_nsec = new IntPtr(nanos % NanosPerSecond);
+            result.tv_nsec = (int)(nanos % NanosPerSecond);
             result.tv_sec = new IntPtr(tv_sec.ToInt64() + (timeSpan.Ticks / TimeSpan.TicksPerSecond) + overflow_sec);
+            result.clock_type = GPRClockType.Realtime;
             return result;
         }
     }
diff --git a/src/csharp/Grpc.Core/Metadata.cs b/src/csharp/Grpc.Core/Metadata.cs
index eccec26a616bf003c75b8ef57f114eea753d1cfa..4552d39d88e00143c88ae40631e612e04fb273e8 100644
--- a/src/csharp/Grpc.Core/Metadata.cs
+++ b/src/csharp/Grpc.Core/Metadata.cs
@@ -30,55 +30,163 @@
 #endregion
 
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Collections.Immutable;
+using System.Collections.Specialized;
 using System.Runtime.InteropServices;
 using System.Text;
 
+using Grpc.Core.Utils;
+
 namespace Grpc.Core
 {
     /// <summary>
-    /// gRPC call metadata.
+    /// Provides access to read and write metadata values to be exchanged during a call.
     /// </summary>
-    public class Metadata
+    public sealed class Metadata : IList<Metadata.Entry>
     {
-        public static readonly Metadata Empty = new Metadata(ImmutableList<MetadataEntry>.Empty);
+        /// <summary>
+        /// An read-only instance of metadata containing no entries.
+        /// </summary>
+        public static readonly Metadata Empty = new Metadata().Freeze();
+
+        readonly List<Entry> entries;
+        bool readOnly;
+
+        public Metadata()
+        {
+            this.entries = new List<Entry>();
+        }
+
+        public Metadata(ICollection<Entry> entries)
+        {
+            this.entries = new List<Entry>(entries);
+        }
+
+        /// <summary>
+        /// Makes this object read-only.
+        /// </summary>
+        /// <returns>this object</returns>
+        public Metadata Freeze()
+        {
+            this.readOnly = true;
+            return this;
+        }
+
+        // TODO: add support for access by key
+
+        #region IList members
+
+        public int IndexOf(Metadata.Entry item)
+        {
+            return entries.IndexOf(item);
+        }
 
-        readonly ImmutableList<MetadataEntry> entries;
+        public void Insert(int index, Metadata.Entry item)
+        {
+            CheckWriteable();
+            entries.Insert(index, item);
+        }
 
-        public Metadata(ImmutableList<MetadataEntry> entries)
+        public void RemoveAt(int index)
         {
-            this.entries = entries;
+            CheckWriteable();
+            entries.RemoveAt(index);
         }
 
-        public ImmutableList<MetadataEntry> Entries
+        public Metadata.Entry this[int index]
         {
             get
             {
-                return this.entries;
+                return entries[index];
+            }
+
+            set
+            {
+                CheckWriteable();
+                entries[index] = value;
             }
         }
 
-        public static Builder CreateBuilder()
+        public void Add(Metadata.Entry item)
+        {
+            CheckWriteable();
+            entries.Add(item);
+        }
+
+        public void Clear()
+        {
+            CheckWriteable();
+            entries.Clear();
+        }
+
+        public bool Contains(Metadata.Entry item)
+        {
+            return entries.Contains(item);
+        }
+
+        public void CopyTo(Metadata.Entry[] array, int arrayIndex)
         {
-            return new Builder();
+            entries.CopyTo(array, arrayIndex);
         }
-       
-        public struct MetadataEntry
+
+        public int Count
+        {
+            get { return entries.Count; }
+        }
+
+        public bool IsReadOnly
+        {
+            get { return readOnly; }
+        }
+
+        public bool Remove(Metadata.Entry item)
+        {
+            CheckWriteable();
+            return entries.Remove(item);
+        }
+
+        public IEnumerator<Metadata.Entry> GetEnumerator()
+        {
+            return entries.GetEnumerator();
+        }
+
+        IEnumerator System.Collections.IEnumerable.GetEnumerator()
+        {
+            return entries.GetEnumerator();
+        }
+
+        private void CheckWriteable()
+        {
+            Preconditions.CheckState(!readOnly, "Object is read only");
+        }
+
+        #endregion
+
+        /// <summary>
+        /// Metadata entry
+        /// </summary>
+        public struct Entry
         {
+            private static readonly Encoding Encoding = Encoding.ASCII;
+
             readonly string key;
-            readonly byte[] valueBytes;
+            string value;
+            byte[] valueBytes;
 
-            public MetadataEntry(string key, byte[] valueBytes)
+            public Entry(string key, byte[] valueBytes)
             {
-                this.key = key;
-                this.valueBytes = valueBytes;
+                this.key = Preconditions.CheckNotNull(key);
+                this.value = null;
+                this.valueBytes = Preconditions.CheckNotNull(valueBytes);
             }
 
-            public MetadataEntry(string key, string value)
+            public Entry(string key, string value)
             {
-                this.key = key;
-                this.valueBytes = Encoding.ASCII.GetBytes(value);
+                this.key = Preconditions.CheckNotNull(key);
+                this.value = Preconditions.CheckNotNull(value);
+                this.valueBytes = null;
             }
 
             public string Key
@@ -89,38 +197,29 @@ namespace Grpc.Core
                 }
             }
 
-            // TODO: using ByteString would guarantee immutability.
             public byte[] ValueBytes
             {
                 get
                 {
-                    return this.valueBytes;
+                    if (valueBytes == null)
+                    {
+                        valueBytes = Encoding.GetBytes(value);
+                    }
+                    return valueBytes;
                 }
             }
-        }
 
-        public class Builder
-        {
-            readonly List<Metadata.MetadataEntry> entries = new List<Metadata.MetadataEntry>();
-
-            public List<MetadataEntry> Entries
+            public string Value
             {
                 get
                 {
-                    return entries;
+                    if (value == null)
+                    {
+                        value = Encoding.GetString(valueBytes);
+                    }
+                    return value;
                 }
             }
-
-            public Builder Add(MetadataEntry entry)
-            {
-                entries.Add(entry);
-                return this;
-            }
-
-            public Metadata Build()
-            {
-                return new Metadata(entries.ToImmutableList());
-            }
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/Stub/StubConfiguration.cs b/src/csharp/Grpc.Core/Stub/StubConfiguration.cs
deleted file mode 100644
index 5bcb5b40d2da6a1397ba869524ff1a65229ac329..0000000000000000000000000000000000000000
--- a/src/csharp/Grpc.Core/Stub/StubConfiguration.cs
+++ /dev/null
@@ -1,64 +0,0 @@
-#region Copyright notice and license
-
-// 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.
-
-#endregion
-
-using System;
-using Grpc.Core.Internal;
-using Grpc.Core.Utils;
-
-namespace Grpc.Core
-{
-    public delegate void HeaderInterceptorDelegate(Metadata.Builder headerBuilder);
-
-    public class StubConfiguration
-    {
-        /// <summary>
-        /// The default stub configuration.
-        /// </summary>
-        public static readonly StubConfiguration Default = new StubConfiguration((headerBuilder) => { });
-
-        readonly HeaderInterceptorDelegate headerInterceptor;
-
-        public StubConfiguration(HeaderInterceptorDelegate headerInterceptor)
-        {
-            this.headerInterceptor = Preconditions.CheckNotNull(headerInterceptor);
-        }
-
-        public HeaderInterceptorDelegate HeaderInterceptor
-        {
-            get
-            {
-                return headerInterceptor;
-            }
-        }
-    }
-}
diff --git a/src/csharp/Grpc.Core/Version.cs b/src/csharp/Grpc.Core/Version.cs
index 972f495bd7dc06590f6dff550067b2fbb66e2c94..f1db1f61578e1fdfc45c6000ffbc6916240c22dc 100644
--- a/src/csharp/Grpc.Core/Version.cs
+++ b/src/csharp/Grpc.Core/Version.cs
@@ -3,4 +3,3 @@ using System.Runtime.CompilerServices;
 
 // The current version of gRPC C#.
 [assembly: AssemblyVersion("0.6.0.*")]
-
diff --git a/src/csharp/Grpc.Examples.MathClient/MathClient.cs b/src/csharp/Grpc.Examples.MathClient/MathClient.cs
index b7637214600a7f1a28e37c78345a5bcd0dbd10f4..cfe2a0691607c27ed2608b91d9fa097a6c59a0c6 100644
--- a/src/csharp/Grpc.Examples.MathClient/MathClient.cs
+++ b/src/csharp/Grpc.Examples.MathClient/MathClient.cs
@@ -41,18 +41,18 @@ namespace math
         {
             using (Channel channel = new Channel("127.0.0.1", 23456))
             {
-                Math.IMathClient stub = new Math.MathClient(channel);
-                MathExamples.DivExample(stub);
+                Math.IMathClient client = new Math.MathClient(channel);
+                MathExamples.DivExample(client);
 
-                MathExamples.DivAsyncExample(stub).Wait();
+                MathExamples.DivAsyncExample(client).Wait();
 
-                MathExamples.FibExample(stub).Wait();
+                MathExamples.FibExample(client).Wait();
 
-                MathExamples.SumExample(stub).Wait();
+                MathExamples.SumExample(client).Wait();
 
-                MathExamples.DivManyExample(stub).Wait();
+                MathExamples.DivManyExample(client).Wait();
 
-                MathExamples.DependendRequestsExample(stub).Wait();
+                MathExamples.DependendRequestsExample(client).Wait();
             }
 
             GrpcEnvironment.Shutdown();
diff --git a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
index 10dceb60aaad70fca4004551e220870dcc0d0636..e7c4b331208de2f09590830889e3423ae123455f 100644
--- a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
+++ b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
@@ -49,7 +49,7 @@ namespace math.Tests
         string host = "localhost";
         Server server;
         Channel channel;
-        Math.IMathClient client;
+        Math.MathClient client;
 
         [TestFixtureSetUp]
         public void Init()
@@ -59,14 +59,14 @@ namespace math.Tests
             int port = server.AddListeningPort(host, Server.PickUnusedPort);
             server.Start();
             channel = new Channel(host, port);
+            client = Math.NewClient(channel);
 
             // TODO(jtattermusch): get rid of the custom header here once we have dedicated tests
             // for header support.
-            var stubConfig = new StubConfiguration((headerBuilder) =>
+            client.HeaderInterceptor = (metadata) =>
             {
-                headerBuilder.Add(new Metadata.MetadataEntry("customHeader", "abcdef"));
-            });
-            client = Math.NewStub(channel, stubConfig);
+                metadata.Add(new Metadata.Entry("customHeader", "abcdef"));
+            };
         }
 
         [TestFixtureTearDown]
diff --git a/src/csharp/Grpc.Examples/MathExamples.cs b/src/csharp/Grpc.Examples/MathExamples.cs
index d2cfbee18f7fad6c4d69c1a16cd2bf08b2955082..7deb6516893b9957433225e30eca249780036d19 100644
--- a/src/csharp/Grpc.Examples/MathExamples.cs
+++ b/src/csharp/Grpc.Examples/MathExamples.cs
@@ -38,29 +38,29 @@ namespace math
 {
     public static class MathExamples
     {
-        public static void DivExample(Math.IMathClient stub)
+        public static void DivExample(Math.IMathClient client)
         {
-            DivReply result = stub.Div(new DivArgs.Builder { Dividend = 10, Divisor = 3 }.Build());
+            DivReply result = client.Div(new DivArgs.Builder { Dividend = 10, Divisor = 3 }.Build());
             Console.WriteLine("Div Result: " + result);
         }
 
-        public static async Task DivAsyncExample(Math.IMathClient stub)
+        public static async Task DivAsyncExample(Math.IMathClient client)
         {
-            Task<DivReply> resultTask = stub.DivAsync(new DivArgs.Builder { Dividend = 4, Divisor = 5 }.Build());
+            Task<DivReply> resultTask = client.DivAsync(new DivArgs.Builder { Dividend = 4, Divisor = 5 }.Build());
             DivReply result = await resultTask;
             Console.WriteLine("DivAsync Result: " + result);
         }
 
-        public static async Task FibExample(Math.IMathClient stub)
+        public static async Task FibExample(Math.IMathClient client)
         {
-            using (var call = stub.Fib(new FibArgs.Builder { Limit = 5 }.Build()))
+            using (var call = client.Fib(new FibArgs.Builder { Limit = 5 }.Build()))
             {
                 List<Num> result = await call.ResponseStream.ToList();
                 Console.WriteLine("Fib Result: " + string.Join("|", result));
             }
         }
 
-        public static async Task SumExample(Math.IMathClient stub)
+        public static async Task SumExample(Math.IMathClient client)
         {
             var numbers = new List<Num>
             {
@@ -69,14 +69,14 @@ namespace math
                 new Num.Builder { Num_ = 3 }.Build()
             };
 
-            using (var call = stub.Sum())
+            using (var call = client.Sum())
             {
                 await call.RequestStream.WriteAll(numbers);
                 Console.WriteLine("Sum Result: " + await call.Result);
             }
         }
 
-        public static async Task DivManyExample(Math.IMathClient stub)
+        public static async Task DivManyExample(Math.IMathClient client)
         {
             var divArgsList = new List<DivArgs>
             {
@@ -84,14 +84,14 @@ namespace math
                 new DivArgs.Builder { Dividend = 100, Divisor = 21 }.Build(),
                 new DivArgs.Builder { Dividend = 7, Divisor = 2 }.Build()
             };
-            using (var call = stub.DivMany())
+            using (var call = client.DivMany())
             { 
                 await call.RequestStream.WriteAll(divArgsList);
                 Console.WriteLine("DivMany Result: " + string.Join("|", await call.ResponseStream.ToList()));
             }
         }
 
-        public static async Task DependendRequestsExample(Math.IMathClient stub)
+        public static async Task DependendRequestsExample(Math.IMathClient client)
         {
             var numbers = new List<Num>
             {
@@ -101,13 +101,13 @@ namespace math
             };
 
             Num sum;
-            using (var sumCall = stub.Sum())
+            using (var sumCall = client.Sum())
             {
                 await sumCall.RequestStream.WriteAll(numbers);
                 sum = await sumCall.Result;
             }
 
-            DivReply result = await stub.DivAsync(new DivArgs.Builder { Dividend = sum.Num_, Divisor = numbers.Count }.Build());
+            DivReply result = await client.DivAsync(new DivArgs.Builder { Dividend = sum.Num_, Divisor = numbers.Count }.Build());
             Console.WriteLine("Avg Result: " + result);
         }
     }
diff --git a/src/csharp/Grpc.Examples/MathGrpc.cs b/src/csharp/Grpc.Examples/MathGrpc.cs
index b9efc44e8c1e4bdd6a704208bd3f827032fa4bd8..1805972ce33f2dacdee3132133385237f6bf9649 100644
--- a/src/csharp/Grpc.Examples/MathGrpc.cs
+++ b/src/csharp/Grpc.Examples/MathGrpc.cs
@@ -41,14 +41,14 @@ namespace math {
         __Marshaller_Num,
         __Marshaller_Num);
 
-    // client-side stub interface
+    // client interface
     public interface IMathClient
     {
-      global::math.DivReply Div(global::math.DivArgs request, CancellationToken token = default(CancellationToken));
-      Task<global::math.DivReply> DivAsync(global::math.DivArgs request, CancellationToken token = default(CancellationToken));
-      AsyncDuplexStreamingCall<global::math.DivArgs, global::math.DivReply> DivMany(CancellationToken token = default(CancellationToken));
-      AsyncServerStreamingCall<global::math.Num> Fib(global::math.FibArgs request, CancellationToken token = default(CancellationToken));
-      AsyncClientStreamingCall<global::math.Num, global::math.Num> Sum(CancellationToken token = default(CancellationToken));
+      global::math.DivReply Div(global::math.DivArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      Task<global::math.DivReply> DivAsync(global::math.DivArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncDuplexStreamingCall<global::math.DivArgs, global::math.DivReply> DivMany(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncServerStreamingCall<global::math.Num> Fib(global::math.FibArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncClientStreamingCall<global::math.Num, global::math.Num> Sum(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
     }
 
     // server-side interface
@@ -61,38 +61,35 @@ namespace math {
     }
 
     // client stub
-    public class MathClient : AbstractStub<MathClient, StubConfiguration>, IMathClient
+    public class MathClient : ClientBase, IMathClient
     {
-      public MathClient(Channel channel) : this(channel, StubConfiguration.Default)
+      public MathClient(Channel channel) : base(channel)
       {
       }
-      public MathClient(Channel channel, StubConfiguration config) : base(channel, config)
+      public global::math.DivReply Div(global::math.DivArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
+        var call = CreateCall(__ServiceName, __Method_Div, headers);
+        return Calls.BlockingUnaryCall(call, request, cancellationToken);
       }
-      public global::math.DivReply Div(global::math.DivArgs request, CancellationToken token = default(CancellationToken))
+      public Task<global::math.DivReply> DivAsync(global::math.DivArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Div);
-        return Calls.BlockingUnaryCall(call, request, token);
+        var call = CreateCall(__ServiceName, __Method_Div, headers);
+        return Calls.AsyncUnaryCall(call, request, cancellationToken);
       }
-      public Task<global::math.DivReply> DivAsync(global::math.DivArgs request, CancellationToken token = default(CancellationToken))
+      public AsyncDuplexStreamingCall<global::math.DivArgs, global::math.DivReply> DivMany(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Div);
-        return Calls.AsyncUnaryCall(call, request, token);
+        var call = CreateCall(__ServiceName, __Method_DivMany, headers);
+        return Calls.AsyncDuplexStreamingCall(call, cancellationToken);
       }
-      public AsyncDuplexStreamingCall<global::math.DivArgs, global::math.DivReply> DivMany(CancellationToken token = default(CancellationToken))
+      public AsyncServerStreamingCall<global::math.Num> Fib(global::math.FibArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_DivMany);
-        return Calls.AsyncDuplexStreamingCall(call, token);
+        var call = CreateCall(__ServiceName, __Method_Fib, headers);
+        return Calls.AsyncServerStreamingCall(call, request, cancellationToken);
       }
-      public AsyncServerStreamingCall<global::math.Num> Fib(global::math.FibArgs request, CancellationToken token = default(CancellationToken))
+      public AsyncClientStreamingCall<global::math.Num, global::math.Num> Sum(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Fib);
-        return Calls.AsyncServerStreamingCall(call, request, token);
-      }
-      public AsyncClientStreamingCall<global::math.Num, global::math.Num> Sum(CancellationToken token = default(CancellationToken))
-      {
-        var call = CreateCall(__ServiceName, __Method_Sum);
-        return Calls.AsyncClientStreamingCall(call, token);
+        var call = CreateCall(__ServiceName, __Method_Sum, headers);
+        return Calls.AsyncClientStreamingCall(call, cancellationToken);
       }
     }
 
@@ -106,17 +103,12 @@ namespace math {
           .AddMethod(__Method_Sum, serviceImpl.Sum).Build();
     }
 
-    // creates a new client stub
-    public static IMathClient NewStub(Channel channel)
+    // creates a new client
+    public static MathClient NewClient(Channel channel)
     {
       return new MathClient(channel);
     }
 
-    // creates a new client stub
-    public static IMathClient NewStub(Channel channel, StubConfiguration config)
-    {
-      return new MathClient(channel, config);
-    }
   }
 }
 #endregion
diff --git a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
index 0ac1add8e4289c08717e84b3fde662065de62f6c..73ff0e74b57daeeb87b9fd4563b6efaf2bf71281 100644
--- a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
+++ b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
@@ -63,7 +63,7 @@ namespace Grpc.HealthCheck.Tests
             server.Start();
             channel = new Channel(Host, port);
 
-            client = Grpc.Health.V1Alpha.Health.NewStub(channel);
+            client = Grpc.Health.V1Alpha.Health.NewClient(channel);
         }
 
         [TestFixtureTearDown]
diff --git a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
index ed9fc4ed77493e0592677293af83d2449fcc6cc9..3aebdcb557309a1169beffcc4383a9c2ffc0f970 100644
--- a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
+++ b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
@@ -21,11 +21,11 @@ namespace Grpc.Health.V1Alpha {
         __Marshaller_HealthCheckRequest,
         __Marshaller_HealthCheckResponse);
 
-    // client-side stub interface
+    // client interface
     public interface IHealthClient
     {
-      global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, CancellationToken token = default(CancellationToken));
-      Task<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, CancellationToken token = default(CancellationToken));
+      global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      Task<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
     }
 
     // server-side interface
@@ -35,23 +35,20 @@ namespace Grpc.Health.V1Alpha {
     }
 
     // client stub
-    public class HealthClient : AbstractStub<HealthClient, StubConfiguration>, IHealthClient
+    public class HealthClient : ClientBase, IHealthClient
     {
-      public HealthClient(Channel channel) : this(channel, StubConfiguration.Default)
+      public HealthClient(Channel channel) : base(channel)
       {
       }
-      public HealthClient(Channel channel, StubConfiguration config) : base(channel, config)
+      public global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
+        var call = CreateCall(__ServiceName, __Method_Check, headers);
+        return Calls.BlockingUnaryCall(call, request, cancellationToken);
       }
-      public global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, CancellationToken token = default(CancellationToken))
+      public Task<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Check);
-        return Calls.BlockingUnaryCall(call, request, token);
-      }
-      public Task<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, CancellationToken token = default(CancellationToken))
-      {
-        var call = CreateCall(__ServiceName, __Method_Check);
-        return Calls.AsyncUnaryCall(call, request, token);
+        var call = CreateCall(__ServiceName, __Method_Check, headers);
+        return Calls.AsyncUnaryCall(call, request, cancellationToken);
       }
     }
 
@@ -62,17 +59,12 @@ namespace Grpc.Health.V1Alpha {
           .AddMethod(__Method_Check, serviceImpl.Check).Build();
     }
 
-    // creates a new client stub
-    public static IHealthClient NewStub(Channel channel)
+    // creates a new client
+    public static HealthClient NewClient(Channel channel)
     {
       return new HealthClient(channel);
     }
 
-    // creates a new client stub
-    public static IHealthClient NewStub(Channel channel, StubConfiguration config)
-    {
-      return new HealthClient(channel, config);
-    }
   }
 }
 #endregion
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
index bdcb2c505c251d3b3a30fea1ca6974b7463ce6c1..05e732dbd462b914f90f0228f11e8bf3e46b5880 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
@@ -119,7 +119,7 @@ namespace Grpc.IntegrationTesting
 
             using (Channel channel = new Channel(options.serverHost, options.serverPort.Value, credentials, channelOptions))
             {
-                var stubConfig = StubConfiguration.Default;
+                TestService.TestServiceClient client = new TestService.TestServiceClient(channel);
                 if (options.testCase == "service_account_creds" || options.testCase == "compute_engine_creds")
                 {
                     var credential = GoogleCredential.GetApplicationDefault();
@@ -127,10 +127,9 @@ namespace Grpc.IntegrationTesting
                     {
                         credential = credential.CreateScoped(new[] { AuthScope });
                     }
-                    stubConfig = new StubConfiguration(OAuth2InterceptorFactory.Create(credential));
+                    client.HeaderInterceptor = OAuth2InterceptorFactory.Create(credential);
                 }
 
-                TestService.ITestServiceClient client = new TestService.TestServiceClient(channel, stubConfig);
                 RunTestCase(options.testCase, client);
             }
             GrpcEnvironment.Shutdown();
@@ -363,7 +362,7 @@ namespace Grpc.IntegrationTesting
                 Console.WriteLine("running cancel_after_begin");
 
                 var cts = new CancellationTokenSource();
-                using (var call = client.StreamingInputCall(cts.Token))
+                using (var call = client.StreamingInputCall(cancellationToken: cts.Token))
                 {
                     // TODO(jtattermusch): we need this to ensure call has been initiated once we cancel it.
                     await Task.Delay(1000);
@@ -390,7 +389,7 @@ namespace Grpc.IntegrationTesting
                 Console.WriteLine("running cancel_after_first_response");
 
                 var cts = new CancellationTokenSource();
-                using (var call = client.FullDuplexCall(cts.Token))
+                using (var call = client.FullDuplexCall(cancellationToken: cts.Token))
                 {
                     await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
                         .SetResponseType(PayloadType.COMPRESSABLE)
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs b/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs
index 6c2da9d2ee672320e7c2017affa1c76cd0ba2039..f306289cfb5dc9031c2bfb4fdeb5a303b3ef91de 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs
@@ -65,7 +65,7 @@ namespace Grpc.IntegrationTesting
                 new ChannelOption(ChannelOptions.SslTargetNameOverride, TestCredentials.DefaultHostOverride)
             };
             channel = new Channel(host, port, TestCredentials.CreateTestClientCredentials(true), options);
-            client = TestService.NewStub(channel);
+            client = TestService.NewClient(channel);
         }
 
         [TestFixtureTearDown]
diff --git a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
index ee077f9f56f146bc9dc0aa06cbaa8222133a0961..96d9b2371770eec0cf3956e6dfa17e5e0665f98c 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
@@ -56,17 +56,17 @@ namespace grpc.testing {
         __Marshaller_StreamingOutputCallRequest,
         __Marshaller_StreamingOutputCallResponse);
 
-    // client-side stub interface
+    // client interface
     public interface ITestServiceClient
     {
-      global::grpc.testing.Empty EmptyCall(global::grpc.testing.Empty request, CancellationToken token = default(CancellationToken));
-      Task<global::grpc.testing.Empty> EmptyCallAsync(global::grpc.testing.Empty request, CancellationToken token = default(CancellationToken));
-      global::grpc.testing.SimpleResponse UnaryCall(global::grpc.testing.SimpleRequest request, CancellationToken token = default(CancellationToken));
-      Task<global::grpc.testing.SimpleResponse> UnaryCallAsync(global::grpc.testing.SimpleRequest request, CancellationToken token = default(CancellationToken));
-      AsyncServerStreamingCall<global::grpc.testing.StreamingOutputCallResponse> StreamingOutputCall(global::grpc.testing.StreamingOutputCallRequest request, CancellationToken token = default(CancellationToken));
-      AsyncClientStreamingCall<global::grpc.testing.StreamingInputCallRequest, global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(CancellationToken token = default(CancellationToken));
-      AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> FullDuplexCall(CancellationToken token = default(CancellationToken));
-      AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> HalfDuplexCall(CancellationToken token = default(CancellationToken));
+      global::grpc.testing.Empty EmptyCall(global::grpc.testing.Empty request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      Task<global::grpc.testing.Empty> EmptyCallAsync(global::grpc.testing.Empty request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      global::grpc.testing.SimpleResponse UnaryCall(global::grpc.testing.SimpleRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      Task<global::grpc.testing.SimpleResponse> UnaryCallAsync(global::grpc.testing.SimpleRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncServerStreamingCall<global::grpc.testing.StreamingOutputCallResponse> StreamingOutputCall(global::grpc.testing.StreamingOutputCallRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncClientStreamingCall<global::grpc.testing.StreamingInputCallRequest, global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> FullDuplexCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> HalfDuplexCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
     }
 
     // server-side interface
@@ -81,53 +81,50 @@ namespace grpc.testing {
     }
 
     // client stub
-    public class TestServiceClient : AbstractStub<TestServiceClient, StubConfiguration>, ITestServiceClient
+    public class TestServiceClient : ClientBase, ITestServiceClient
     {
-      public TestServiceClient(Channel channel) : this(channel, StubConfiguration.Default)
+      public TestServiceClient(Channel channel) : base(channel)
       {
       }
-      public TestServiceClient(Channel channel, StubConfiguration config) : base(channel, config)
+      public global::grpc.testing.Empty EmptyCall(global::grpc.testing.Empty request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
+        var call = CreateCall(__ServiceName, __Method_EmptyCall, headers);
+        return Calls.BlockingUnaryCall(call, request, cancellationToken);
       }
-      public global::grpc.testing.Empty EmptyCall(global::grpc.testing.Empty request, CancellationToken token = default(CancellationToken))
+      public Task<global::grpc.testing.Empty> EmptyCallAsync(global::grpc.testing.Empty request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_EmptyCall);
-        return Calls.BlockingUnaryCall(call, request, token);
+        var call = CreateCall(__ServiceName, __Method_EmptyCall, headers);
+        return Calls.AsyncUnaryCall(call, request, cancellationToken);
       }
-      public Task<global::grpc.testing.Empty> EmptyCallAsync(global::grpc.testing.Empty request, CancellationToken token = default(CancellationToken))
+      public global::grpc.testing.SimpleResponse UnaryCall(global::grpc.testing.SimpleRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_EmptyCall);
-        return Calls.AsyncUnaryCall(call, request, token);
+        var call = CreateCall(__ServiceName, __Method_UnaryCall, headers);
+        return Calls.BlockingUnaryCall(call, request, cancellationToken);
       }
-      public global::grpc.testing.SimpleResponse UnaryCall(global::grpc.testing.SimpleRequest request, CancellationToken token = default(CancellationToken))
+      public Task<global::grpc.testing.SimpleResponse> UnaryCallAsync(global::grpc.testing.SimpleRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_UnaryCall);
-        return Calls.BlockingUnaryCall(call, request, token);
+        var call = CreateCall(__ServiceName, __Method_UnaryCall, headers);
+        return Calls.AsyncUnaryCall(call, request, cancellationToken);
       }
-      public Task<global::grpc.testing.SimpleResponse> UnaryCallAsync(global::grpc.testing.SimpleRequest request, CancellationToken token = default(CancellationToken))
+      public AsyncServerStreamingCall<global::grpc.testing.StreamingOutputCallResponse> StreamingOutputCall(global::grpc.testing.StreamingOutputCallRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_UnaryCall);
-        return Calls.AsyncUnaryCall(call, request, token);
+        var call = CreateCall(__ServiceName, __Method_StreamingOutputCall, headers);
+        return Calls.AsyncServerStreamingCall(call, request, cancellationToken);
       }
-      public AsyncServerStreamingCall<global::grpc.testing.StreamingOutputCallResponse> StreamingOutputCall(global::grpc.testing.StreamingOutputCallRequest request, CancellationToken token = default(CancellationToken))
+      public AsyncClientStreamingCall<global::grpc.testing.StreamingInputCallRequest, global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_StreamingOutputCall);
-        return Calls.AsyncServerStreamingCall(call, request, token);
+        var call = CreateCall(__ServiceName, __Method_StreamingInputCall, headers);
+        return Calls.AsyncClientStreamingCall(call, cancellationToken);
       }
-      public AsyncClientStreamingCall<global::grpc.testing.StreamingInputCallRequest, global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(CancellationToken token = default(CancellationToken))
+      public AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> FullDuplexCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_StreamingInputCall);
-        return Calls.AsyncClientStreamingCall(call, token);
+        var call = CreateCall(__ServiceName, __Method_FullDuplexCall, headers);
+        return Calls.AsyncDuplexStreamingCall(call, cancellationToken);
       }
-      public AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> FullDuplexCall(CancellationToken token = default(CancellationToken))
+      public AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> HalfDuplexCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_FullDuplexCall);
-        return Calls.AsyncDuplexStreamingCall(call, token);
-      }
-      public AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> HalfDuplexCall(CancellationToken token = default(CancellationToken))
-      {
-        var call = CreateCall(__ServiceName, __Method_HalfDuplexCall);
-        return Calls.AsyncDuplexStreamingCall(call, token);
+        var call = CreateCall(__ServiceName, __Method_HalfDuplexCall, headers);
+        return Calls.AsyncDuplexStreamingCall(call, cancellationToken);
       }
     }
 
@@ -143,17 +140,12 @@ namespace grpc.testing {
           .AddMethod(__Method_HalfDuplexCall, serviceImpl.HalfDuplexCall).Build();
     }
 
-    // creates a new client stub
-    public static ITestServiceClient NewStub(Channel channel)
+    // creates a new client
+    public static TestServiceClient NewClient(Channel channel)
     {
       return new TestServiceClient(channel);
     }
 
-    // creates a new client stub
-    public static ITestServiceClient NewStub(Channel channel, StubConfiguration config)
-    {
-      return new TestServiceClient(channel, config);
-    }
   }
 }
 #endregion
diff --git a/src/csharp/ext/grpc_csharp_ext.c b/src/csharp/ext/grpc_csharp_ext.c
index a55cc9e247f8cb55c1520e4aaec47c6f71872744..7dd1959a5f7fab2f8b0bebd7bd2befd5a8f0626f 100644
--- a/src/csharp/ext/grpc_csharp_ext.c
+++ b/src/csharp/ext/grpc_csharp_ext.c
@@ -302,12 +302,13 @@ grpcsharp_completion_queue_destroy(grpc_completion_queue *cq) {
 
 GPR_EXPORT grpc_event GPR_CALLTYPE
 grpcsharp_completion_queue_next(grpc_completion_queue *cq) {
-  return grpc_completion_queue_next(cq, gpr_inf_future);
+  return grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME));
 }
 
 GPR_EXPORT grpc_event GPR_CALLTYPE
 grpcsharp_completion_queue_pluck(grpc_completion_queue *cq, void *tag) {
-  return grpc_completion_queue_pluck(cq, tag, gpr_inf_future);
+  return grpc_completion_queue_pluck(cq, tag,
+                                     gpr_inf_future(GPR_CLOCK_REALTIME));
 }
 
 /* Channel */
@@ -382,7 +383,7 @@ grpcsharp_channel_args_destroy(grpc_channel_args *args) {
 GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_now(void) { return gpr_now(GPR_CLOCK_REALTIME); }
 
 GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_inf_future(void) {
-  return gpr_inf_future;
+  return gpr_inf_future(GPR_CLOCK_REALTIME);
 }
 
 GPR_EXPORT gpr_int32 GPR_CALLTYPE gprsharp_sizeof_timespec(void) {
diff --git a/src/csharp/generate_proto_csharp.sh b/src/csharp/generate_proto_csharp.sh
index 6eb3887ea109f12513d2ad967b83a8611cae00c3..7c3ba7092207687b3c8f76ef05fff5c170912e8b 100755
--- a/src/csharp/generate_proto_csharp.sh
+++ b/src/csharp/generate_proto_csharp.sh
@@ -32,16 +32,17 @@
 set +e
 cd $(dirname $0)
 
+PROTOC=../../bins/opt/protobuf/protoc
 PLUGIN=protoc-gen-grpc=../../bins/opt/grpc_csharp_plugin
 EXAMPLES_DIR=Grpc.Examples
 INTEROP_DIR=Grpc.IntegrationTesting
 HEALTHCHECK_DIR=Grpc.HealthCheck
 
-protoc --plugin=$PLUGIN --grpc_out=$EXAMPLES_DIR \
+$PROTOC --plugin=$PLUGIN --grpc_out=$EXAMPLES_DIR \
     -I $EXAMPLES_DIR/proto $EXAMPLES_DIR/proto/math.proto
 
-protoc --plugin=$PLUGIN --grpc_out=$INTEROP_DIR \
+$PROTOC --plugin=$PLUGIN --grpc_out=$INTEROP_DIR \
     -I $INTEROP_DIR/proto $INTEROP_DIR/proto/test.proto
-	
-protoc --plugin=$PLUGIN --grpc_out=$HEALTHCHECK_DIR \
+
+$PROTOC --plugin=$PLUGIN --grpc_out=$HEALTHCHECK_DIR \
     -I $HEALTHCHECK_DIR/proto $HEALTHCHECK_DIR/proto/health.proto
diff --git a/src/node/ext/completion_queue_async_worker.cc b/src/node/ext/completion_queue_async_worker.cc
index 4be208c82daf6365e98cb7c576a42ea42be2e3d9..1215c97e193788bd1e05358bfe2e93c2ab91bfb1 100644
--- a/src/node/ext/completion_queue_async_worker.cc
+++ b/src/node/ext/completion_queue_async_worker.cc
@@ -62,7 +62,8 @@ CompletionQueueAsyncWorker::CompletionQueueAsyncWorker()
 CompletionQueueAsyncWorker::~CompletionQueueAsyncWorker() {}
 
 void CompletionQueueAsyncWorker::Execute() {
-  result = grpc_completion_queue_next(queue, gpr_inf_future);
+  result =
+      grpc_completion_queue_next(queue, gpr_inf_future(GPR_CLOCK_REALTIME));
   if (!result.success) {
     SetErrorMessage("The batch encountered an error");
   }
diff --git a/src/node/ext/server.cc b/src/node/ext/server.cc
index 51c55ba96573542da4c459999be768085a7a79c2..34cde9ffab06dbced9893e455b412d45a986ae63 100644
--- a/src/node/ext/server.cc
+++ b/src/node/ext/server.cc
@@ -161,7 +161,8 @@ void Server::ShutdownServer() {
     grpc_server_shutdown_and_notify(this->wrapped_server,
                                     this->shutdown_queue,
                                     NULL);
-    grpc_completion_queue_pluck(this->shutdown_queue, NULL, gpr_inf_future);
+    grpc_completion_queue_pluck(this->shutdown_queue, NULL,
+                                gpr_inf_future(GPR_CLOCK_REALTIME));
     this->wrapped_server = NULL;
   }
 }
diff --git a/src/node/ext/timeval.cc b/src/node/ext/timeval.cc
index bc3237f7a6c2d06794dbdffaa4d3a70a8b5b343a..60de4d816dd4811c2bae9dab5310711ed1888226 100644
--- a/src/node/ext/timeval.cc
+++ b/src/node/ext/timeval.cc
@@ -42,18 +42,19 @@ namespace node {
 
 gpr_timespec MillisecondsToTimespec(double millis) {
   if (millis == std::numeric_limits<double>::infinity()) {
-    return gpr_inf_future;
+    return gpr_inf_future(GPR_CLOCK_REALTIME);
   } else if (millis == -std::numeric_limits<double>::infinity()) {
-    return gpr_inf_past;
+    return gpr_inf_past(GPR_CLOCK_REALTIME);
   } else {
-    return gpr_time_from_micros(static_cast<int64_t>(millis * 1000));
+    return gpr_time_from_micros(static_cast<int64_t>(millis * 1000),
+                                GPR_CLOCK_REALTIME);
   }
 }
 
 double TimespecToMilliseconds(gpr_timespec timespec) {
-  if (gpr_time_cmp(timespec, gpr_inf_future) == 0) {
+  if (gpr_time_cmp(timespec, gpr_inf_future(GPR_CLOCK_REALTIME)) == 0) {
     return std::numeric_limits<double>::infinity();
-  } else if (gpr_time_cmp(timespec, gpr_inf_past) == 0) {
+  } else if (gpr_time_cmp(timespec, gpr_inf_past(GPR_CLOCK_REALTIME)) == 0) {
     return -std::numeric_limits<double>::infinity();
   } else {
     return (static_cast<double>(timespec.tv_sec) * 1000 +
diff --git a/src/node/test/surface_test.js b/src/node/test/surface_test.js
index 8d1f99aaee0251b87262bc16a4a41400cab1ca18..125957277f06f398426a755adeaa7928569c42e6 100644
--- a/src/node/test/surface_test.js
+++ b/src/node/test/surface_test.js
@@ -418,6 +418,48 @@ describe('Other conditions', function() {
       });
     });
   });
+  describe('Error object should contain the status', function() {
+    it('for a unary call', function(done) {
+      client.unary({error: true}, function(err, data) {
+        assert(err);
+        assert.strictEqual(err.code, grpc.status.UNKNOWN);
+        assert.strictEqual(err.message, 'Requested error');
+        done();
+      });
+    });
+    it('for a client stream call', function(done) {
+      var call = client.clientStream(function(err, data) {
+        assert(err);
+        assert.strictEqual(err.code, grpc.status.UNKNOWN);
+        assert.strictEqual(err.message, 'Requested error');
+        done();
+      });
+      call.write({error: false});
+      call.write({error: true});
+      call.end();
+    });
+    it('for a server stream call', function(done) {
+      var call = client.serverStream({error: true});
+      call.on('data', function(){});
+      call.on('error', function(error) {
+        assert.strictEqual(error.code, grpc.status.UNKNOWN);
+        assert.strictEqual(error.message, 'Requested error');
+        done();
+      });
+    });
+    it('for a bidi stream call', function(done) {
+      var call = client.bidiStream();
+      call.write({error: false});
+      call.write({error: true});
+      call.end();
+      call.on('data', function(){});
+      call.on('error', function(error) {
+        assert.strictEqual(error.code, grpc.status.UNKNOWN);
+        assert.strictEqual(error.message, 'Requested error');
+        done();
+      });
+    });
+  });
 });
 describe('Cancelling surface client', function() {
   var client;
diff --git a/src/objective-c/GRPCClient/GRPCCall.h b/src/objective-c/GRPCClient/GRPCCall.h
index cba53fa2f67a0713e9769d042d1612f9f26a283b..4a8b7fff4860a9bbba23fbfbf39209c73269df9b 100644
--- a/src/objective-c/GRPCClient/GRPCCall.h
+++ b/src/objective-c/GRPCClient/GRPCCall.h
@@ -52,7 +52,7 @@
 extern id const kGRPCStatusMetadataKey;
 
 // Represents a single gRPC remote call.
-@interface GRPCCall : NSObject<GRXWriter>
+@interface GRPCCall : GRXWriter
 
 // These HTTP headers will be passed to the server as part of this call. Each HTTP header is a
 // name-value pair with string names and either string or binary values.
@@ -89,7 +89,7 @@ extern id const kGRPCStatusMetadataKey;
 // To finish a call right away, invoke cancel.
 - (instancetype)initWithHost:(NSString *)host
                         path:(NSString *)path
-              requestsWriter:(id<GRXWriter>)requestsWriter NS_DESIGNATED_INITIALIZER;
+              requestsWriter:(GRXWriter *)requestsWriter NS_DESIGNATED_INITIALIZER;
 
 // Finishes the request side of this call, notifies the server that the RPC
 // should be cancelled, and finishes the response side of the call with an error
diff --git a/src/objective-c/GRPCClient/GRPCCall.m b/src/objective-c/GRPCClient/GRPCCall.m
index 4ac4e4d37f5ca3fc11bb8d6fc80cbcc1fd4a47a8..53e5abe177bae77d210547d6dc74b6cc63ddb312 100644
--- a/src/objective-c/GRPCClient/GRPCCall.m
+++ b/src/objective-c/GRPCClient/GRPCCall.m
@@ -79,7 +79,7 @@ NSString * const kGRPCStatusMetadataKey = @"io.grpc.StatusMetadataKey";
   // all. This wrapper over our actual writeable ensures thread-safety and
   // correct ordering.
   GRPCDelegateWrapper *_responseWriteable;
-  id<GRXWriter> _requestWriter;
+  GRXWriter *_requestWriter;
 
   NSMutableDictionary *_requestMetadata;
   NSMutableDictionary *_responseMetadata;
@@ -94,7 +94,7 @@ NSString * const kGRPCStatusMetadataKey = @"io.grpc.StatusMetadataKey";
 // Designated initializer
 - (instancetype)initWithHost:(NSString *)host
                         path:(NSString *)path
-              requestsWriter:(id<GRXWriter>)requestWriter {
+              requestsWriter:(GRXWriter *)requestWriter {
   if (!host || !path) {
     [NSException raise:NSInvalidArgumentException format:@"Neither host nor method can be nil."];
   }
diff --git a/src/objective-c/GRPCClient/private/GRPCDelegateWrapper.h b/src/objective-c/GRPCClient/private/GRPCDelegateWrapper.h
index 1ef245fe37bde42f0d4bfc89fbb9dd60ee8f6b2e..9a30a2f9660be3764573b3bf3d5f060f8d3e360d 100644
--- a/src/objective-c/GRPCClient/private/GRPCDelegateWrapper.h
+++ b/src/objective-c/GRPCClient/private/GRPCDelegateWrapper.h
@@ -33,8 +33,9 @@
 
 #import <Foundation/Foundation.h>
 
+#import <RxLibrary/GRXWriter.h>
+
 @protocol GRXWriteable;
-@protocol GRXWriter;
 
 // This is a thread-safe wrapper over a GRXWriteable instance. It lets one
 // enqueue calls to a GRXWriteable instance for the main thread, guaranteeing
@@ -54,7 +55,7 @@
 // writesFinishedWithError: is sent to the writeable, and released after that.
 // This is used to create a retain cycle that keeps both objects alive until the
 // writing is explicitly finished.
-- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable writer:(id<GRXWriter>)writer
+- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable writer:(GRXWriter *)writer
     NS_DESIGNATED_INITIALIZER;
 
 // Enqueues writeValue: to be sent to the writeable in the main thread.
diff --git a/src/objective-c/GRPCClient/private/GRPCDelegateWrapper.m b/src/objective-c/GRPCClient/private/GRPCDelegateWrapper.m
index 59c0565494b107c1678db7c59f8f2ed42f678a31..294cfb7e2394f2ac04bbb432ea87d01ba6ca0c5c 100644
--- a/src/objective-c/GRPCClient/private/GRPCDelegateWrapper.m
+++ b/src/objective-c/GRPCClient/private/GRPCDelegateWrapper.m
@@ -38,7 +38,7 @@
 @interface GRPCDelegateWrapper ()
 // These are atomic so that cancellation can nillify them from any thread.
 @property(atomic, strong) id<GRXWriteable> writeable;
-@property(atomic, strong) id<GRXWriter> writer;
+@property(atomic, strong) GRXWriter *writer;
 @end
 
 @implementation GRPCDelegateWrapper {
@@ -52,7 +52,7 @@
 }
 
 // Designated initializer
-- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable writer:(id<GRXWriter>)writer {
+- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable writer:(GRXWriter *)writer {
   if (self = [super init]) {
     _writeableQueue = dispatch_get_main_queue();
     _writeable = writeable;
diff --git a/src/objective-c/ProtoRPC/ProtoRPC.h b/src/objective-c/ProtoRPC/ProtoRPC.h
index fcc0a507feb0528814534057f25a6db9f33b2117..bd926b732873efb887aced402518612f6ead9db5 100644
--- a/src/objective-c/ProtoRPC/ProtoRPC.h
+++ b/src/objective-c/ProtoRPC/ProtoRPC.h
@@ -40,7 +40,7 @@
 
 - (instancetype)initWithHost:(NSString *)host
                       method:(ProtoMethod *)method
-              requestsWriter:(id<GRXWriter>)requestsWriter
+              requestsWriter:(GRXWriter *)requestsWriter
                responseClass:(Class)responseClass
           responsesWriteable:(id<GRXWriteable>)responsesWriteable NS_DESIGNATED_INITIALIZER;
 
diff --git a/src/objective-c/ProtoRPC/ProtoRPC.m b/src/objective-c/ProtoRPC/ProtoRPC.m
index fe3ccf054139870f96aa8c552d10b12eddca55c2..889d71a3084008101d480e7bc983b2c41842ab47 100644
--- a/src/objective-c/ProtoRPC/ProtoRPC.m
+++ b/src/objective-c/ProtoRPC/ProtoRPC.m
@@ -35,7 +35,6 @@
 
 #import <GPBProtocolBuffers.h>
 #import <RxLibrary/GRXWriteable.h>
-#import <RxLibrary/GRXWriter.h>
 #import <RxLibrary/GRXWriter+Transformations.h>
 
 @implementation ProtoRPC {
@@ -46,7 +45,7 @@
 #pragma clang diagnostic ignored "-Wobjc-designated-initializers"
 - (instancetype)initWithHost:(NSString *)host
                         path:(NSString *)path
-              requestsWriter:(id<GRXWriter>)requestsWriter {
+              requestsWriter:(GRXWriter *)requestsWriter {
   [NSException raise:NSInvalidArgumentException
               format:@"Please use ProtoRPC's designated initializer instead."];
   return nil;
@@ -56,7 +55,7 @@
 // Designated initializer
 - (instancetype)initWithHost:(NSString *)host
                       method:(ProtoMethod *)method
-              requestsWriter:(id<GRXWriter>)requestsWriter
+              requestsWriter:(GRXWriter *)requestsWriter
                responseClass:(Class)responseClass
           responsesWriteable:(id<GRXWriteable>)responsesWriteable {
   // Because we can't tell the type system to constrain the class, we need to check at runtime:
@@ -65,12 +64,11 @@
                 format:@"A protobuf class to parse the responses must be provided."];
   }
   // A writer that serializes the proto messages to send.
-  id<GRXWriter> bytesWriter =
-      [[[GRXWriter alloc] initWithWriter:requestsWriter] map:^id(GPBMessage *proto) {
-        // TODO(jcanizales): Fail with an understandable error message if the requestsWriter isn't
-        // sending GPBMessages.
-        return [proto data];
-      }];
+  GRXWriter *bytesWriter = [requestsWriter map:^id(GPBMessage *proto) {
+    // TODO(jcanizales): Fail with an understandable error message if the requestsWriter isn't
+    // sending GPBMessages.
+    return [proto data];
+  }];
   if ((self = [super initWithHost:host path:method.HTTPPath requestsWriter:bytesWriter])) {
     // A writeable that parses the proto messages received.
     _responseWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
diff --git a/src/objective-c/ProtoRPC/ProtoService.h b/src/objective-c/ProtoRPC/ProtoService.h
index c5ef820f48a765692082b1908c1c3f2405797278..2e8cb33696b99ce472518938699f300a7eff8da1 100644
--- a/src/objective-c/ProtoRPC/ProtoService.h
+++ b/src/objective-c/ProtoRPC/ProtoService.h
@@ -35,7 +35,7 @@
 
 @class ProtoRPC;
 @protocol GRXWriteable;
-@protocol GRXWriter;
+@class GRXWriter;
 
 @interface ProtoService : NSObject
 - (instancetype)initWithHost:(NSString *)host
@@ -43,7 +43,7 @@
                  serviceName:(NSString *)serviceName NS_DESIGNATED_INITIALIZER;
 
 - (ProtoRPC *)RPCToMethod:(NSString *)method
-           requestsWriter:(id<GRXWriter>)requestsWriter
+           requestsWriter:(GRXWriter *)requestsWriter
   	        responseClass:(Class)responseClass
   	   responsesWriteable:(id<GRXWriteable>)responsesWriteable;
 @end
diff --git a/src/objective-c/ProtoRPC/ProtoService.m b/src/objective-c/ProtoRPC/ProtoService.m
index d7c5b6a8501dc0e83fc113fd842b05695facf8d9..fccc6aadc9cc8488d1f7b424795c7d9e5d1dc581 100644
--- a/src/objective-c/ProtoRPC/ProtoService.m
+++ b/src/objective-c/ProtoRPC/ProtoService.m
@@ -66,7 +66,7 @@
 }
 
 - (ProtoRPC *)RPCToMethod:(NSString *)method
-           requestsWriter:(id<GRXWriter>)requestsWriter
+           requestsWriter:(GRXWriter *)requestsWriter
             responseClass:(Class)responseClass
        responsesWriteable:(id<GRXWriteable>)responsesWriteable {
   ProtoMethod *methodName = [[ProtoMethod alloc] initWithPackage:_packageName
diff --git a/src/objective-c/RxLibrary/GRXBufferedPipe.h b/src/objective-c/RxLibrary/GRXBufferedPipe.h
index 5e876a73bfe3db670198e51f8ae94f37b73f4380..b6296e1ed7236f0bd914a6b74b82d2086a563ab1 100644
--- a/src/objective-c/RxLibrary/GRXBufferedPipe.h
+++ b/src/objective-c/RxLibrary/GRXBufferedPipe.h
@@ -51,7 +51,7 @@
 // pipe will keep buffering all data written to it, your application could run out of memory and
 // crash. If you want to react to flow control signals to prevent that, instead of using this class
 // you can implement an object that conforms to GRXWriter.
-@interface GRXBufferedPipe : NSObject<GRXWriteable, GRXWriter>
+@interface GRXBufferedPipe : GRXWriter<GRXWriteable>
 
 // Convenience constructor.
 + (instancetype)pipe;
diff --git a/src/objective-c/RxLibrary/GRXForwardingWriter.h b/src/objective-c/RxLibrary/GRXForwardingWriter.h
new file mode 100644
index 0000000000000000000000000000000000000000..d004333d2b4958bcca80d45e302e2b3ca0d861c8
--- /dev/null
+++ b/src/objective-c/RxLibrary/GRXForwardingWriter.h
@@ -0,0 +1,43 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#import "GRXWriter.h"
+
+// A "proxy" class that simply forwards values, completion, and errors from its
+// input writer to its writeable.
+// It is useful as a superclass for pipes that act as a transformation of their
+// input writer, and for classes that represent objects with input and
+// output sequences of values, like an RPC.
+@interface GRXForwardingWriter : GRXWriter
+- (instancetype)initWithWriter:(GRXWriter *)writer NS_DESIGNATED_INITIALIZER;
+@end
diff --git a/src/objective-c/RxLibrary/GRXForwardingWriter.m b/src/objective-c/RxLibrary/GRXForwardingWriter.m
new file mode 100644
index 0000000000000000000000000000000000000000..2342f51ab3616955d2d4d8fe571af1ff80f31be2
--- /dev/null
+++ b/src/objective-c/RxLibrary/GRXForwardingWriter.m
@@ -0,0 +1,112 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#import "GRXForwardingWriter.h"
+
+@interface GRXForwardingWriter () <GRXWriteable>
+@end
+
+@implementation GRXForwardingWriter {
+  GRXWriter *_writer;
+  id<GRXWriteable> _writeable;
+}
+
+- (instancetype)init {
+  return [self initWithWriter:nil];
+}
+
+// Designated initializer
+- (instancetype)initWithWriter:(GRXWriter *)writer {
+  if (!writer) {
+    [NSException raise:NSInvalidArgumentException format:@"writer can't be nil."];
+  }
+  if ((self = [super init])) {
+    _writer = writer;
+  }
+  return self;
+}
+
+// This is used to send a completion or an error to the writeable. It nillifies
+// our reference to it in order to guarantee no more messages are sent to it,
+// and to release it.
+- (void)finishOutputWithError:(NSError *)errorOrNil {
+  id<GRXWriteable> writeable = _writeable;
+  _writeable = nil;
+  [writeable writesFinishedWithError:errorOrNil];
+}
+
+// This is used to stop the input writer. It nillifies our reference to it
+// to release it.
+- (void)finishInput {
+  GRXWriter *writer = _writer;
+  _writer = nil;
+  writer.state = GRXWriterStateFinished;
+}
+
+#pragma mark GRXWriteable implementation
+
+- (void)writeValue:(id)value {
+  [_writeable writeValue:value];
+}
+
+- (void)writesFinishedWithError:(NSError *)errorOrNil {
+  _writer = nil;
+  [self finishOutputWithError:errorOrNil];
+}
+
+#pragma mark GRXWriter implementation
+
+- (GRXWriterState)state {
+  return _writer ? _writer.state : GRXWriterStateFinished;
+}
+
+- (void)setState:(GRXWriterState)state {
+  if (state == GRXWriterStateFinished) {
+    _writeable = nil;
+    [self finishInput];
+  } else {
+    _writer.state = state;
+  }
+}
+
+- (void)startWithWriteable:(id<GRXWriteable>)writeable {
+  _writeable = writeable;
+  [_writer startWithWriteable:self];
+}
+
+- (void)finishWithError:(NSError *)errorOrNil {
+  [self finishOutputWithError:errorOrNil];
+  [self finishInput];
+}
+
+@end
diff --git a/src/objective-c/RxLibrary/GRXImmediateWriter.h b/src/objective-c/RxLibrary/GRXImmediateWriter.h
index f86d38dcd8157526f897002a5ed7315983dcddca..b171f0c760a7a4436b58e217687acfb51c9d0da0 100644
--- a/src/objective-c/RxLibrary/GRXImmediateWriter.h
+++ b/src/objective-c/RxLibrary/GRXImmediateWriter.h
@@ -40,15 +40,15 @@
 //
 // Unless the writeable callback pauses them or stops them early, these writers will do all their
 // interactions with the writeable before the start method returns.
-@interface GRXImmediateWriter : NSObject<GRXWriter>
+@interface GRXImmediateWriter : GRXWriter
 
 // Returns a writer that pulls values from the passed NSEnumerator instance and pushes them to
 // its writeable. The NSEnumerator is released when it finishes.
-+ (id<GRXWriter>)writerWithEnumerator:(NSEnumerator *)enumerator;
++ (GRXWriter *)writerWithEnumerator:(NSEnumerator *)enumerator;
 
 // Returns a writer that pushes to its writeable the successive values returned by the passed
 // block. When the block first returns nil, it is released.
-+ (id<GRXWriter>)writerWithValueSupplier:(id (^)())block;
++ (GRXWriter *)writerWithValueSupplier:(id (^)())block;
 
 // Returns a writer that iterates over the values of the passed container and pushes them to
 // its writeable. The container is released when the iteration is over.
@@ -56,18 +56,18 @@
 // Note that the usual speed gain of NSFastEnumeration over NSEnumerator results from not having to
 // call one method per element. Because GRXWriteable instances accept values one by one, that speed
 // gain doesn't happen here.
-+ (id<GRXWriter>)writerWithContainer:(id<NSFastEnumeration>)container;
++ (GRXWriter *)writerWithContainer:(id<NSFastEnumeration>)container;
 
 // Returns a writer that sends the passed value to its writeable and then finishes (releasing the
 // value).
-+ (id<GRXWriter>)writerWithValue:(id)value;
++ (GRXWriter *)writerWithValue:(id)value;
 
 // Returns a writer that, as part of its start method, sends the passed error to the writeable
 // (then releasing the error).
-+ (id<GRXWriter>)writerWithError:(NSError *)error;
++ (GRXWriter *)writerWithError:(NSError *)error;
 
 // Returns a writer that, as part of its start method, finishes immediately without sending any
 // values to its writeable.
-+ (id<GRXWriter>)emptyWriter;
++ (GRXWriter *)emptyWriter;
 
 @end
diff --git a/src/objective-c/RxLibrary/GRXImmediateWriter.m b/src/objective-c/RxLibrary/GRXImmediateWriter.m
index 0b4979872e2f553bb0b9cb5e9eaed9a95a82a02b..b6d2b2cac0ddb44e9e5d2bf3d46b6102480521d3 100644
--- a/src/objective-c/RxLibrary/GRXImmediateWriter.m
+++ b/src/objective-c/RxLibrary/GRXImmediateWriter.m
@@ -63,19 +63,19 @@
   return [[self alloc] initWithEnumerator:enumerator error:errorOrNil];
 }
 
-+ (id<GRXWriter>)writerWithEnumerator:(NSEnumerator *)enumerator {
++ (GRXWriter *)writerWithEnumerator:(NSEnumerator *)enumerator {
   return [self writerWithEnumerator:enumerator error:nil];
 }
 
-+ (id<GRXWriter>)writerWithValueSupplier:(id (^)())block {
++ (GRXWriter *)writerWithValueSupplier:(id (^)())block {
   return [self writerWithEnumerator:[NSEnumerator grx_enumeratorWithValueSupplier:block]];
 }
 
-+ (id<GRXWriter>)writerWithContainer:(id<NSFastEnumeration>)container {
++ (GRXWriter *)writerWithContainer:(id<NSFastEnumeration>)container {
   return [self writerWithEnumerator:[NSEnumerator grx_enumeratorWithContainer:container]];;
 }
 
-+ (id<GRXWriter>)writerWithValue:(id)value {
++ (GRXWriter *)writerWithValue:(id)value {
   if (value) {
     return [self writerWithEnumerator:[NSEnumerator grx_enumeratorWithSingleValue:value]];
   } else {
@@ -83,7 +83,7 @@
   }
 }
 
-+ (id<GRXWriter>)writerWithError:(NSError *)error {
++ (GRXWriter *)writerWithError:(NSError *)error {
   if (error) {
     return [self writerWithEnumerator:nil error:error];
   } else {
@@ -91,7 +91,7 @@
   }
 }
 
-+ (id<GRXWriter>)emptyWriter {
++ (GRXWriter *)emptyWriter {
   static GRXImmediateWriter *emptyWriter;
   static dispatch_once_t onceToken;
   dispatch_once(&onceToken, ^{
diff --git a/src/objective-c/RxLibrary/GRXWriter+Immediate.m b/src/objective-c/RxLibrary/GRXWriter+Immediate.m
index 39c54f86ec6eb5cd6030918d68f1b9ace0e2e826..1d55eb35293ecddf4757b792d8b0a764fb533a9d 100644
--- a/src/objective-c/RxLibrary/GRXWriter+Immediate.m
+++ b/src/objective-c/RxLibrary/GRXWriter+Immediate.m
@@ -38,27 +38,27 @@
 @implementation GRXWriter (Immediate)
 
 + (instancetype)writerWithEnumerator:(NSEnumerator *)enumerator {
-  return [[self alloc] initWithWriter:[GRXImmediateWriter writerWithEnumerator:enumerator]];
+  return [GRXImmediateWriter writerWithEnumerator:enumerator];
 }
 
 + (instancetype)writerWithValueSupplier:(id (^)())block {
-  return [[self alloc] initWithWriter:[GRXImmediateWriter writerWithValueSupplier:block]];
+  return [GRXImmediateWriter writerWithValueSupplier:block];
 }
 
 + (instancetype)writerWithContainer:(id<NSFastEnumeration>)container {
-  return [[self alloc] initWithWriter:[GRXImmediateWriter writerWithContainer:container]];
+  return [GRXImmediateWriter writerWithContainer:container];
 }
 
 + (instancetype)writerWithValue:(id)value {
-  return [[self alloc] initWithWriter:[GRXImmediateWriter writerWithValue:value]];
+  return [GRXImmediateWriter writerWithValue:value];
 }
 
 + (instancetype)writerWithError:(NSError *)error {
-  return [[self alloc] initWithWriter:[GRXImmediateWriter writerWithError:error]];
+  return [GRXImmediateWriter writerWithError:error];
 }
 
 + (instancetype)emptyWriter {
-  return [[self alloc] initWithWriter:[GRXImmediateWriter emptyWriter]];
+  return [GRXImmediateWriter emptyWriter];
 }
 
 @end
diff --git a/src/objective-c/RxLibrary/GRXWriter.h b/src/objective-c/RxLibrary/GRXWriter.h
index dcf44e31433945f712119bb9a15843dcc869c265..5d6e1a472af965b4a5d084ff4fcf2031c5ab5383 100644
--- a/src/objective-c/RxLibrary/GRXWriter.h
+++ b/src/objective-c/RxLibrary/GRXWriter.h
@@ -85,7 +85,7 @@ typedef NS_ENUM(NSInteger, GRXWriterState) {
 // Unless otherwise indicated by a conforming class, no messages should be sent
 // concurrently to a GRXWriter. I.e., conforming classes aren't required to
 // be thread-safe.
-@protocol GRXWriter <NSObject>
+@interface GRXWriter : NSObject
 
 // This property can be used to query the current state of the writer, which
 // determines how it might currently use its writeable. Some state transitions can
@@ -116,12 +116,3 @@ typedef NS_ENUM(NSInteger, GRXWriterState) {
 // can't remember the details in the presence of concurrency.
 - (void)finishWithError:(NSError *)errorOrNil;
 @end
-
-// A "proxy" class that simply forwards values, completion, and errors from its
-// input writer to its writeable.
-// It is useful as a superclass for pipes that act as a transformation of their
-// input writer, and for classes that represent objects with input and
-// output sequences of values, like an RPC.
-@interface GRXWriter : NSObject<GRXWriter>
-- (instancetype)initWithWriter:(id<GRXWriter>)writer NS_DESIGNATED_INITIALIZER;
-@end
diff --git a/src/objective-c/RxLibrary/GRXWriter.m b/src/objective-c/RxLibrary/GRXWriter.m
index cc143835605dbddca187931535557805ff199f05..019fcbd7858320819cb9648dde98f62ccb4874e8 100644
--- a/src/objective-c/RxLibrary/GRXWriter.m
+++ b/src/objective-c/RxLibrary/GRXWriter.m
@@ -33,80 +33,6 @@
 
 #import "GRXWriter.h"
 
-@interface GRXWriter () <GRXWriteable>
-@end
-
-@implementation GRXWriter {
-  id<GRXWriter> _writer;
-  id<GRXWriteable> _writeable;
-}
-
-- (instancetype)init {
-  return [self initWithWriter:nil];
-}
-
-// Designated initializer
-- (instancetype)initWithWriter:(id<GRXWriter>)writer {
-  if (!writer) {
-    [NSException raise:NSInvalidArgumentException format:@"writer can't be nil."];
-  }
-  if ((self = [super init])) {
-    _writer = writer;
-  }
-  return self;
-}
-
-// This is used to send a completion or an error to the writeable. It nillifies
-// our reference to it in order to guarantee no more messages are sent to it,
-// and to release it.
-- (void)finishOutputWithError:(NSError *)errorOrNil {
-  id<GRXWriteable> writeable = _writeable;
-  _writeable = nil;
-  [writeable writesFinishedWithError:errorOrNil];
-}
-
-// This is used to stop the input writer. It nillifies our reference to it
-// to release it.
-- (void)finishInput {
-  id<GRXWriter> writer = _writer;
-  _writer = nil;
-  writer.state = GRXWriterStateFinished;
-}
-
-#pragma mark GRXWriteable implementation
-
-- (void)writeValue:(id)value {
-  [_writeable writeValue:value];
-}
-
-- (void)writesFinishedWithError:(NSError *)errorOrNil {
-  _writer = nil;
-  [self finishOutputWithError:errorOrNil];
-}
-
-#pragma mark GRXWriter implementation
-
-- (GRXWriterState)state {
-  return _writer ? _writer.state : GRXWriterStateFinished;
-}
-
-- (void)setState:(GRXWriterState)state {
-  if (state == GRXWriterStateFinished) {
-    _writeable = nil;
-    [self finishInput];
-  } else {
-    _writer.state = state;
-  }
-}
-
-- (void)startWithWriteable:(id<GRXWriteable>)writeable {
-  _writeable = writeable;
-  [_writer startWithWriteable:self];
-}
-
-- (void)finishWithError:(NSError *)errorOrNil {
-  [self finishOutputWithError:errorOrNil];
-  [self finishInput];
-}
+@implementation GRXWriter
 
 @end
diff --git a/src/objective-c/RxLibrary/transformations/GRXMappingWriter.h b/src/objective-c/RxLibrary/transformations/GRXMappingWriter.h
index 55f6f82f20b1b54853cafdfc5e842f61e00e8682..43b87068647d45ef8bc1c4cf5475e37204a337e1 100644
--- a/src/objective-c/RxLibrary/transformations/GRXMappingWriter.h
+++ b/src/objective-c/RxLibrary/transformations/GRXMappingWriter.h
@@ -31,10 +31,10 @@
  *
  */
 
-#import "RxLibrary/GRXWriter.h"
+#import "RxLibrary/GRXForwardingWriter.h"
 
 // A "proxy" writer that transforms all the values of its input writer by using a mapping function.
-@interface GRXMappingWriter : GRXWriter
-- (instancetype)initWithWriter:(id<GRXWriter>)writer map:(id (^)(id value))map
+@interface GRXMappingWriter : GRXForwardingWriter
+- (instancetype)initWithWriter:(GRXWriter *)writer map:(id (^)(id value))map
     NS_DESIGNATED_INITIALIZER;
 @end
diff --git a/src/objective-c/RxLibrary/transformations/GRXMappingWriter.m b/src/objective-c/RxLibrary/transformations/GRXMappingWriter.m
index 2cdfea1b6751a54429f6d39a4755eeac9b98bba2..f3242e4fa95b4749f7cbfd386341baf9c19823f3 100644
--- a/src/objective-c/RxLibrary/transformations/GRXMappingWriter.m
+++ b/src/objective-c/RxLibrary/transformations/GRXMappingWriter.m
@@ -37,19 +37,19 @@ static id (^kIdentity)(id value) = ^id(id value) {
   return value;
 };
 
-@interface GRXWriter () <GRXWriteable>
+@interface GRXForwardingWriter () <GRXWriteable>
 @end
 
 @implementation GRXMappingWriter {
   id (^_map)(id value);
 }
 
-- (instancetype)initWithWriter:(id<GRXWriter>)writer {
+- (instancetype)initWithWriter:(GRXWriter *)writer {
   return [self initWithWriter:writer map:nil];
 }
 
 // Designated initializer
-- (instancetype)initWithWriter:(id<GRXWriter>)writer map:(id (^)(id value))map {
+- (instancetype)initWithWriter:(GRXWriter *)writer map:(id (^)(id value))map {
   if ((self = [super initWithWriter:writer])) {
     _map = map ?: kIdentity;
   }
diff --git a/src/objective-c/tests/GRPCClientTests.m b/src/objective-c/tests/GRPCClientTests.m
index f9c2d5d8d6e1445b25891bc38470aaaa84b63a04..3210ad70502c59d5cf4d19be55913187a3c4724e 100644
--- a/src/objective-c/tests/GRPCClientTests.m
+++ b/src/objective-c/tests/GRPCClientTests.m
@@ -87,7 +87,7 @@ static ProtoMethod *kUnaryCallMethod;
 
   [call startWithWriteable:responsesWriteable];
 
-  [self waitForExpectationsWithTimeout:2. handler:nil];
+  [self waitForExpectationsWithTimeout:4 handler:nil];
 }
 
 - (void)testEmptyRPC {
@@ -109,7 +109,7 @@ static ProtoMethod *kUnaryCallMethod;
 
   [call startWithWriteable:responsesWriteable];
 
-  [self waitForExpectationsWithTimeout:2. handler:nil];
+  [self waitForExpectationsWithTimeout:4 handler:nil];
 }
 
 - (void)testSimpleProtoRPC {
@@ -120,7 +120,7 @@ static ProtoMethod *kUnaryCallMethod;
   request.responseSize = 100;
   request.fillUsername = YES;
   request.fillOauthScope = YES;
-  id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[request data]];
+  GRXWriter *requestsWriter = [GRXWriter writerWithValue:[request data]];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
                                              path:kUnaryCallMethod.HTTPPath
@@ -141,7 +141,7 @@ static ProtoMethod *kUnaryCallMethod;
 
   [call startWithWriteable:responsesWriteable];
 
-  [self waitForExpectationsWithTimeout:2. handler:nil];
+  [self waitForExpectationsWithTimeout:4 handler:nil];
 }
 
 - (void)testMetadata {
@@ -150,7 +150,7 @@ static ProtoMethod *kUnaryCallMethod;
   RMTSimpleRequest *request = [RMTSimpleRequest message];
   request.fillUsername = YES;
   request.fillOauthScope = YES;
-  id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[request data]];
+  GRXWriter *requestsWriter = [GRXWriter writerWithValue:[request data]];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
                                              path:kUnaryCallMethod.HTTPPath
@@ -173,7 +173,7 @@ static ProtoMethod *kUnaryCallMethod;
 
   [call startWithWriteable:responsesWriteable];
 
-  [self waitForExpectationsWithTimeout:2. handler:nil];
+  [self waitForExpectationsWithTimeout:4 handler:nil];
 }
 
 @end
diff --git a/src/objective-c/tests/InteropTests.m b/src/objective-c/tests/InteropTests.m
index 74f6b231cfdbba076346d0bba423c073772ac813..501f33317a1cb1bc71d2e98c4d8dd52e233bc0d5 100644
--- a/src/objective-c/tests/InteropTests.m
+++ b/src/objective-c/tests/InteropTests.m
@@ -103,7 +103,7 @@
     [expectation fulfill];
   }];
 
-  [self waitForExpectationsWithTimeout:2 handler:nil];
+  [self waitForExpectationsWithTimeout:4 handler:nil];
 }
 
 - (void)testLargeUnaryRPC {
@@ -125,7 +125,7 @@
     [expectation fulfill];
   }];
 
-  [self waitForExpectationsWithTimeout:4 handler:nil];
+  [self waitForExpectationsWithTimeout:8 handler:nil];
 }
 
 - (void)testClientStreamingRPC {
@@ -143,7 +143,7 @@
   RMTStreamingInputCallRequest *request4 = [RMTStreamingInputCallRequest message];
   request4.payload.body = [NSMutableData dataWithLength:45904];
 
-  id<GRXWriter> writer = [GRXWriter writerWithContainer:@[request1, request2, request3, request4]];
+  GRXWriter *writer = [GRXWriter writerWithContainer:@[request1, request2, request3, request4]];
 
   [_service streamingInputCallWithRequestsWriter:writer
                                          handler:^(RMTStreamingInputCallResponse *response,
@@ -157,7 +157,7 @@
     [expectation fulfill];
   }];
 
-  [self waitForExpectationsWithTimeout:4 handler:nil];
+  [self waitForExpectationsWithTimeout:8 handler:nil];
 }
 
 - (void)testServerStreamingRPC {
@@ -193,7 +193,7 @@
     }
   }];
 
-  [self waitForExpectationsWithTimeout:4 handler:nil];
+  [self waitForExpectationsWithTimeout:8 handler:nil];
 }
 
 - (void)testPingPongRPC {
@@ -236,7 +236,7 @@
       [expectation fulfill];
     }
   }];
-  [self waitForExpectationsWithTimeout:2 handler:nil];
+  [self waitForExpectationsWithTimeout:4 handler:nil];
 }
 
 - (void)testEmptyStreamRPC {
@@ -282,10 +282,11 @@
   
   [requestsBuffer writeValue:request];
   
-  __block ProtoRPC *call = [_service RPCToFullDuplexCallWithRequestsWriter:requestsBuffer
-                                                              eventHandler:^(BOOL done,
-                                                                             RMTStreamingOutputCallResponse *response,
-                                                                             NSError *error) {
+  __block ProtoRPC *call =
+      [_service RPCToFullDuplexCallWithRequestsWriter:requestsBuffer
+                                         eventHandler:^(BOOL done,
+                                                        RMTStreamingOutputCallResponse *response,
+                                                        NSError *error) {
     if (receivedResponse) {
       XCTAssert(done, @"Unexpected extra response %@", response);
       XCTAssertEqual(error.code, GRPC_STATUS_CANCELLED);
@@ -299,7 +300,7 @@
     }
   }];
   [call start];
-  [self waitForExpectationsWithTimeout:4 handler:nil];
+  [self waitForExpectationsWithTimeout:8 handler:nil];
 }
 
 @end
diff --git a/src/objective-c/tests/LocalClearTextTests.m b/src/objective-c/tests/LocalClearTextTests.m
index 10c9f13ea3bbdf3d885d0677f94248a772ce3b33..4317614dd9d3ce1208d5ed33e57c41fa6653c555 100644
--- a/src/objective-c/tests/LocalClearTextTests.m
+++ b/src/objective-c/tests/LocalClearTextTests.m
@@ -64,7 +64,7 @@ static NSString * const kService = @"RouteGuide";
 //                                                         interface:kService
 //                                                            method:@"EmptyCall"];
 //
-//  id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[NSData data]];
+//  GRXWriter *requestsWriter = [GRXWriter writerWithValue:[NSData data]];
 //
 //  GRPCCall *call = [[GRPCCall alloc] initWithHost:kRouteGuideHost
 //                                           method:method
@@ -91,7 +91,7 @@ static NSString * const kService = @"RouteGuide";
                                                      service:kService
                                                       method:@"RecordRoute"];
 
-  id<GRXWriter> requestsWriter = [GRXWriter emptyWriter];
+  GRXWriter *requestsWriter = [GRXWriter emptyWriter];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kRouteGuideHost
                                              path:method.HTTPPath
@@ -122,7 +122,7 @@ static NSString * const kService = @"RouteGuide";
   RGDPoint *point = [RGDPoint message];
   point.latitude = 28E7;
   point.longitude = -15E7;
-  id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[point data]];
+  GRXWriter *requestsWriter = [GRXWriter writerWithValue:[point data]];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kRouteGuideHost
                                              path:method.HTTPPath
diff --git a/src/php/bin/determine_extension_dir.sh b/src/php/bin/determine_extension_dir.sh
index 3c1fc297fa7820564e74518ddbe6a583318825fb..b4342ac89fa8e562e4160e39dcad11eb9335ed43 100755
--- a/src/php/bin/determine_extension_dir.sh
+++ b/src/php/bin/determine_extension_dir.sh
@@ -46,4 +46,6 @@ elif [ ! -e $default_extension_dir/grpc.so ]; then
     ln -s $f $module_dir/$(basename $f) &> /dev/null || true
   done
   extension_dir="-d extension_dir=${module_dir} -d extension=grpc.so"
+else
+  extension_dir="-d extension=grpc.so"
 fi
diff --git a/src/php/ext/grpc/call.c b/src/php/ext/grpc/call.c
index 10a4946ea60da70ff8cd14645b0911e5a721622e..b67bae75682f6b46aa0fb8abbc45ff59014f1245 100644
--- a/src/php/ext/grpc/call.c
+++ b/src/php/ext/grpc/call.c
@@ -408,7 +408,7 @@ PHP_METHOD(Call, startBatch) {
     goto cleanup;
   }
   event = grpc_completion_queue_pluck(completion_queue, call->wrapped,
-                                      gpr_inf_future);
+                                      gpr_inf_future(GPR_CLOCK_REALTIME));
   if (!event.success) {
     zend_throw_exception(spl_ce_LogicException,
                          "The batch failed for some reason",
diff --git a/src/php/ext/grpc/completion_queue.c b/src/php/ext/grpc/completion_queue.c
index b24c83757caa017cd8cf935563204f98f1cfa005..c653a592efd30c6d35863f07722a73ec123eba8d 100644
--- a/src/php/ext/grpc/completion_queue.c
+++ b/src/php/ext/grpc/completion_queue.c
@@ -43,8 +43,9 @@ void grpc_php_init_completion_queue(TSRMLS_D) {
 
 void grpc_php_shutdown_completion_queue(TSRMLS_D) {
   grpc_completion_queue_shutdown(completion_queue);
-  while (grpc_completion_queue_next(completion_queue, gpr_inf_future).type !=
-         GRPC_QUEUE_SHUTDOWN)
+  while (grpc_completion_queue_next(completion_queue,
+                                    gpr_inf_future(GPR_CLOCK_REALTIME))
+             .type != GRPC_QUEUE_SHUTDOWN)
     ;
   grpc_completion_queue_destroy(completion_queue);
 }
diff --git a/src/php/ext/grpc/server.c b/src/php/ext/grpc/server.c
index 02c886c715ce074702e12ca838491bc72e4aa112..c319526e4208806463c6fcb4b36fbe4c8081ccdc 100644
--- a/src/php/ext/grpc/server.c
+++ b/src/php/ext/grpc/server.c
@@ -64,7 +64,8 @@ void free_wrapped_grpc_server(void *object TSRMLS_DC) {
   wrapped_grpc_server *server = (wrapped_grpc_server *)object;
   if (server->wrapped != NULL) {
     grpc_server_shutdown_and_notify(server->wrapped, completion_queue, NULL);
-    grpc_completion_queue_pluck(completion_queue, NULL, gpr_inf_future);
+    grpc_completion_queue_pluck(completion_queue, NULL,
+                                gpr_inf_future(GPR_CLOCK_REALTIME));
     grpc_server_destroy(server->wrapped);
   }
   efree(server);
@@ -143,7 +144,8 @@ PHP_METHOD(Server, requestCall) {
                          (long)error_code TSRMLS_CC);
     goto cleanup;
   }
-  event = grpc_completion_queue_pluck(completion_queue, NULL, gpr_inf_future);
+  event = grpc_completion_queue_pluck(completion_queue, NULL,
+                                      gpr_inf_future(GPR_CLOCK_REALTIME));
   if (!event.success) {
     zend_throw_exception(spl_ce_LogicException,
                          "Failed to request a call for some reason",
diff --git a/src/php/ext/grpc/timeval.c b/src/php/ext/grpc/timeval.c
index ccf7f0f81af5db163931c7ab50e19ca6cfe61606..4fd069e19a177e0b585a44e8987dbc133790c7d0 100644
--- a/src/php/ext/grpc/timeval.c
+++ b/src/php/ext/grpc/timeval.c
@@ -98,7 +98,7 @@ PHP_METHOD(Timeval, __construct) {
                          "Timeval expects a long", 1 TSRMLS_CC);
     return;
   }
-  gpr_timespec time = gpr_time_from_micros(microseconds);
+  gpr_timespec time = gpr_time_from_micros(microseconds, GPR_TIMESPAN);
   memcpy(&timeval->wrapped, &time, sizeof(gpr_timespec));
 }
 
@@ -217,7 +217,8 @@ PHP_METHOD(Timeval, now) {
  * @return Timeval Zero length time interval
  */
 PHP_METHOD(Timeval, zero) {
-  zval *grpc_php_timeval_zero = grpc_php_wrap_timeval(gpr_time_0);
+  zval *grpc_php_timeval_zero =
+      grpc_php_wrap_timeval(gpr_time_0(GPR_CLOCK_REALTIME));
   RETURN_ZVAL(grpc_php_timeval_zero,
               false, /* Copy original before returning? */
               true /* Destroy original before returning */);
@@ -228,7 +229,8 @@ PHP_METHOD(Timeval, zero) {
  * @return Timeval Infinite future time value
  */
 PHP_METHOD(Timeval, infFuture) {
-  zval *grpc_php_timeval_inf_future = grpc_php_wrap_timeval(gpr_inf_future);
+  zval *grpc_php_timeval_inf_future =
+      grpc_php_wrap_timeval(gpr_inf_future(GPR_CLOCK_REALTIME));
   RETURN_DESTROY_ZVAL(grpc_php_timeval_inf_future);
 }
 
@@ -237,7 +239,8 @@ PHP_METHOD(Timeval, infFuture) {
  * @return Timeval Infinite past time value
  */
 PHP_METHOD(Timeval, infPast) {
-  zval *grpc_php_timeval_inf_past = grpc_php_wrap_timeval(gpr_inf_past);
+  zval *grpc_php_timeval_inf_past =
+      grpc_php_wrap_timeval(gpr_inf_past(GPR_CLOCK_REALTIME));
   RETURN_DESTROY_ZVAL(grpc_php_timeval_inf_past);
 }
 
diff --git a/src/python/src/grpc/_adapter/_c/utility.c b/src/python/src/grpc/_adapter/_c/utility.c
index 480a720c21fa54e4ef368bde5138866c9ca21060..000c8d0c38244f0e4c8fa85837b1371b2a30e089 100644
--- a/src/python/src/grpc/_adapter/_c/utility.c
+++ b/src/python/src/grpc/_adapter/_c/utility.c
@@ -385,10 +385,12 @@ static int pygrpc_isinf(double x) {
 gpr_timespec pygrpc_cast_double_to_gpr_timespec(double seconds) {
   gpr_timespec result;
   if (pygrpc_isinf(seconds)) {
-    result = seconds > 0.0 ? gpr_inf_future : gpr_inf_past;
+    result = seconds > 0.0 ? gpr_inf_future(GPR_CLOCK_REALTIME)
+                           : gpr_inf_past(GPR_CLOCK_REALTIME);
   } else {
     result.tv_sec = (time_t)seconds;
     result.tv_nsec = ((seconds - result.tv_sec) * 1e9);
+    result.clock_type = GPR_CLOCK_REALTIME;
   }
   return result;
 }
diff --git a/src/ruby/ext/grpc/rb_completion_queue.c b/src/ruby/ext/grpc/rb_completion_queue.c
index 2d52d96dc8566105afa0aa1e053f6993f3918456..f89439f4c10df5ba04ab0c48b720f3200cebe051 100644
--- a/src/ruby/ext/grpc/rb_completion_queue.c
+++ b/src/ruby/ext/grpc/rb_completion_queue.c
@@ -82,7 +82,7 @@ static void grpc_rb_completion_queue_shutdown_drain(grpc_completion_queue *cq) {
   next_call.cq = cq;
   next_call.event.type = GRPC_QUEUE_TIMEOUT;
   /* TODO: the timeout should be a module level constant that defaults
-   * to gpr_inf_future.
+   * to gpr_inf_future(GPR_CLOCK_REALTIME).
    *
    * - at the moment this does not work, it stalls.  Using a small timeout like
    *   this one works, and leads to fast test run times; a longer timeout was
@@ -91,7 +91,8 @@ static void grpc_rb_completion_queue_shutdown_drain(grpc_completion_queue *cq) {
    * - investigate further, this is probably another example of C-level cleanup
    * not working consistently in all cases.
    */
-  next_call.timeout = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_micros(5e3));
+  next_call.timeout = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                   gpr_time_from_micros(5e3, GPR_TIMESPAN));
   do {
     rb_thread_call_without_gvl(grpc_rb_completion_queue_next_no_gil,
                                (void *)&next_call, NULL, NULL);
@@ -143,7 +144,7 @@ grpc_event grpc_rb_completion_queue_pluck_event(VALUE self, VALUE tag,
   TypedData_Get_Struct(self, grpc_completion_queue,
                        &grpc_rb_completion_queue_data_type, next_call.cq);
   if (TYPE(timeout) == T_NIL) {
-    next_call.timeout = gpr_inf_future;
+    next_call.timeout = gpr_inf_future(GPR_CLOCK_REALTIME);
   } else {
     next_call.timeout = grpc_rb_time_timeval(timeout, /* absolute time*/ 0);
   }
diff --git a/src/ruby/ext/grpc/rb_grpc.c b/src/ruby/ext/grpc/rb_grpc.c
index 699548b940344b58f75a9dc2c2626a6ba76fc428..f138bf6dd5329b6f102b63b6c70804a430f6b676 100644
--- a/src/ruby/ext/grpc/rb_grpc.c
+++ b/src/ruby/ext/grpc/rb_grpc.c
@@ -98,6 +98,7 @@ gpr_timespec grpc_rb_time_timeval(VALUE time, int interval) {
   const char *tstr = interval ? "time interval" : "time";
   const char *want = " want <secs from epoch>|<Time>|<GRPC::TimeConst.*>";
 
+  t.clock_type = GPR_CLOCK_REALTIME;
   switch (TYPE(time)) {
     case T_DATA:
       if (CLASS_OF(time) == grpc_rb_cTimeVal) {
@@ -222,24 +223,31 @@ static VALUE grpc_rb_time_val_to_s(VALUE self) {
   return rb_funcall(grpc_rb_time_val_to_time(self), id_to_s, 0);
 }
 
+static gpr_timespec zero_realtime;
+static gpr_timespec inf_future_realtime;
+static gpr_timespec inf_past_realtime;
+
 /* Adds a module with constants that map to gpr's static timeval structs. */
 static void Init_grpc_time_consts() {
   VALUE grpc_rb_mTimeConsts =
       rb_define_module_under(grpc_rb_mGrpcCore, "TimeConsts");
   grpc_rb_cTimeVal =
       rb_define_class_under(grpc_rb_mGrpcCore, "TimeSpec", rb_cObject);
+  zero_realtime = gpr_time_0(GPR_CLOCK_REALTIME);
+  inf_future_realtime = gpr_inf_future(GPR_CLOCK_REALTIME);
+  inf_past_realtime = gpr_inf_past(GPR_CLOCK_REALTIME);
   rb_define_const(
       grpc_rb_mTimeConsts, "ZERO",
       TypedData_Wrap_Struct(grpc_rb_cTimeVal, &grpc_rb_timespec_data_type,
-                            (void *)&gpr_time_0));
+                            (void *)&zero_realtime));
   rb_define_const(
       grpc_rb_mTimeConsts, "INFINITE_FUTURE",
       TypedData_Wrap_Struct(grpc_rb_cTimeVal, &grpc_rb_timespec_data_type,
-                            (void *)&gpr_inf_future));
+                            (void *)&inf_future_realtime));
   rb_define_const(
       grpc_rb_mTimeConsts, "INFINITE_PAST",
       TypedData_Wrap_Struct(grpc_rb_cTimeVal, &grpc_rb_timespec_data_type,
-                            (void *)&gpr_inf_past));
+                            (void *)&inf_past_realtime));
   rb_define_method(grpc_rb_cTimeVal, "to_time", grpc_rb_time_val_to_time, 0);
   rb_define_method(grpc_rb_cTimeVal, "inspect", grpc_rb_time_val_inspect, 0);
   rb_define_method(grpc_rb_cTimeVal, "to_s", grpc_rb_time_val_to_s, 0);
diff --git a/templates/Makefile.template b/templates/Makefile.template
index 490c002f9a9c0baeb02e4837949706808fcae375..044db4dbfeec5bb2426ee33c1f7a304cc74c802b 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -353,20 +353,20 @@ CACHE_MK =
 HAS_PKG_CONFIG ?= $(shell command -v $(PKG_CONFIG) >/dev/null 2>&1 && echo true || echo false)
 
 ifeq ($(HAS_PKG_CONFIG), true)
-CACHE_MK += HAS_PKG_CONFIG = true\n
-endif
-
-PC_TEMPLATE = prefix=$(prefix)\n\
-exec_prefix=${'\$${prefix}'}\n\
-includedir=${'\$${prefix}'}/include\n\
-libdir=${'\$${exec_prefix}'}/lib\n\
-\n\
-Name: $(PC_NAME)\n\
-Description: $(PC_DESCRIPTION)\n\
-Version: $(VERSION)\n\
-Cflags: -I${'\$${includedir}'} $(PC_CFLAGS)\n\
-Requires.private: $(PC_REQUIRES_PRIVATE)\n\
-Libs: -L${'\$${libdir}'} $(PC_LIB)\n\
+CACHE_MK += HAS_PKG_CONFIG = true,
+endif
+
+PC_TEMPLATE = prefix=$(prefix),\
+exec_prefix=${'\$${prefix}'},\
+includedir=${'\$${prefix}'}/include,\
+libdir=${'\$${exec_prefix}'}/lib,\
+,\
+Name: $(PC_NAME),\
+Description: $(PC_DESCRIPTION),\
+Version: $(VERSION),\
+Cflags: -I${'\$${includedir}'} $(PC_CFLAGS),\
+Requires.private: $(PC_REQUIRES_PRIVATE),\
+Libs: -L${'\$${libdir}'} $(PC_LIB),\
 Libs.private: $(PC_LIBS_PRIVATE)
 
 # gpr .pc file
@@ -442,7 +442,7 @@ HAS_SYSTEM_PERFTOOLS ?= $(shell $(PERFTOOLS_CHECK_CMD) 2> /dev/null && echo true
 ifeq ($(HAS_SYSTEM_PERFTOOLS),true)
 DEFINES += GRPC_HAVE_PERFTOOLS
 LIBS += profiler
-CACHE_MK += HAS_SYSTEM_PERFTOOLS = true\n
+CACHE_MK += HAS_SYSTEM_PERFTOOLS = true,
 endif
 endif
 
@@ -451,20 +451,20 @@ ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_OPENSSL_ALPN ?= $(shell $(OPENSSL_ALPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
 ifeq ($(HAS_SYSTEM_OPENSSL_ALPN),true)
 HAS_SYSTEM_OPENSSL_NPN = true
-CACHE_MK += HAS_SYSTEM_OPENSSL_ALPN = true\n
+CACHE_MK += HAS_SYSTEM_OPENSSL_ALPN = true,
 else
 HAS_SYSTEM_OPENSSL_NPN ?= $(shell $(OPENSSL_NPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
 endif
 ifeq ($(HAS_SYSTEM_OPENSSL_NPN),true)
-CACHE_MK += HAS_SYSTEM_OPENSSL_NPN = true\n
+CACHE_MK += HAS_SYSTEM_OPENSSL_NPN = true,
 endif
 HAS_SYSTEM_ZLIB ?= $(shell $(ZLIB_CHECK_CMD) 2> /dev/null && echo true || echo false)
 ifeq ($(HAS_SYSTEM_ZLIB),true)
-CACHE_MK += HAS_SYSTEM_ZLIB = true\n
+CACHE_MK += HAS_SYSTEM_ZLIB = true,
 endif
 HAS_SYSTEM_PROTOBUF ?= $(HAS_SYSTEM_PROTOBUF_VERIFY)
 ifeq ($(HAS_SYSTEM_PROTOBUF),true)
-CACHE_MK += HAS_SYSTEM_PROTOBUF = true\n
+CACHE_MK += HAS_SYSTEM_PROTOBUF = true,
 endif
 else
 # override system libraries if the config requires a custom compiled library
@@ -476,10 +476,10 @@ endif
 
 HAS_PROTOC ?= $(shell $(PROTOC_CHECK_CMD) 2> /dev/null && echo true || echo false)
 ifeq ($(HAS_PROTOC),true)
-CACHE_MK += HAS_PROTOC = true\n
+CACHE_MK += HAS_PROTOC = true,
 HAS_VALID_PROTOC ?= $(shell $(PROTOC_CHECK_VERSION_CMD) 2> /dev/null && echo true || echo false)
 ifeq ($(HAS_VALID_PROTOC),true)
-CACHE_MK += HAS_VALID_PROTOC = true\n
+CACHE_MK += HAS_VALID_PROTOC = true,
 endif
 else
 HAS_VALID_PROTOC = false
@@ -500,7 +500,7 @@ endif
 endif
 
 ifeq ($(HAS_SYSTEMTAP),true)
-CACHE_MK += HAS_SYSTEMTAP = true\n
+CACHE_MK += HAS_SYSTEMTAP = true,
 endif
 
 # Note that for testing purposes, one can do:
@@ -1108,32 +1108,32 @@ endif
 
 cache.mk::
 	$(E) "[MAKE]    Generating $@"
-	$(Q) echo -e "$(CACHE_MK)" >$@
+	$(Q) echo "$(CACHE_MK)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/gpr.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GPR_PC_FILE)" >$@
+	$(Q) echo "$(GPR_PC_FILE)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GRPC_PC_FILE)" >$@
+	$(Q) echo "$(GRPC_PC_FILE)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_unsecure.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GRPC_UNSECURE_PC_FILE)" >$@
+	$(Q) echo "$(GRPC_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GRPCXX_PC_FILE)" >$@
+	$(Q) echo "$(GRPCXX_PC_FILE)" | tr , '\n' >$@
 
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++_unsecure.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
-	$(Q) echo -e "$(GRPCXX_UNSECURE_PC_FILE)" >$@
+	$(Q) echo "$(GRPCXX_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
 % for p in protos:
 ifeq ($(NO_PROTOC),true)
diff --git a/test/core/client_config/uri_parser_test.c b/test/core/client_config/uri_parser_test.c
index e5f9017ce0946adca4bd5b8ae4505062fa57070e..3451ca1e8cc46456a108a7a6c84859dc32af2e2b 100644
--- a/test/core/client_config/uri_parser_test.c
+++ b/test/core/client_config/uri_parser_test.c
@@ -60,6 +60,7 @@ int main(int argc, char **argv) {
   test_succeeds("http://www.google.com:90", "http", "www.google.com:90", "");
   test_succeeds("a192.4-df:foo.coom", "a192.4-df", "", "foo.coom");
   test_succeeds("a+b:foo.coom", "a+b", "", "foo.coom");
+  test_succeeds("zookeeper://127.0.0.1:2181/foo/bar", "zookeeper", "127.0.0.1:2181", "/foo/bar");
   test_fails("xyz");
   test_fails("http://www.google.com?why-are-you-using-queries");
   test_fails("dns:foo.com#fragments-arent-supported-here");
diff --git a/test/core/end2end/cq_verifier.c b/test/core/end2end/cq_verifier.c
index 407c72b519f5f26ebf9ce916bef63823d42e3569..81e158e9691522b0de7f211cd0ffe206960bba66 100644
--- a/test/core/end2end/cq_verifier.c
+++ b/test/core/end2end/cq_verifier.c
@@ -248,8 +248,8 @@ void cq_verify(cq_verifier *v) {
 }
 
 void cq_verify_empty(cq_verifier *v) {
-  gpr_timespec deadline =
-      gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(1));
+  gpr_timespec deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                       gpr_time_from_seconds(1, GPR_TIMESPAN));
   grpc_event ev;
 
   GPR_ASSERT(v->expect.next == &v->expect && "expectation queue must be empty");
diff --git a/test/core/end2end/multiple_server_queues_test.c b/test/core/end2end/multiple_server_queues_test.c
index e291e4e6d39d18936a41f254144abe369220e557..208d42e6e741d41532e7985c19c3c9484e369f41 100644
--- a/test/core/end2end/multiple_server_queues_test.c
+++ b/test/core/end2end/multiple_server_queues_test.c
@@ -49,11 +49,12 @@ int main(int argc, char **argv) {
   grpc_server_register_completion_queue(server, cq2);
   grpc_server_start(server);
   grpc_server_shutdown_and_notify(server, cq2, NULL);
-  grpc_completion_queue_next(cq2, gpr_inf_future); /* cue queue hang */
+  grpc_completion_queue_next(
+      cq2, gpr_inf_future(GPR_CLOCK_REALTIME)); /* cue queue hang */
   grpc_completion_queue_shutdown(cq1);
   grpc_completion_queue_shutdown(cq2);
-  grpc_completion_queue_next(cq1, gpr_inf_future);
-  grpc_completion_queue_next(cq2, gpr_inf_future);
+  grpc_completion_queue_next(cq1, gpr_inf_future(GPR_CLOCK_REALTIME));
+  grpc_completion_queue_next(cq2, gpr_inf_future(GPR_CLOCK_REALTIME));
   grpc_server_destroy(server);
   grpc_completion_queue_destroy(cq1);
   grpc_completion_queue_destroy(cq2);
diff --git a/test/core/end2end/no_server_test.c b/test/core/end2end/no_server_test.c
index 35b837b7b53a756e983b5959a53e3ed837b383b9..79797f93751e3be0cf5b7dccd9998dc432d21cb0 100644
--- a/test/core/end2end/no_server_test.c
+++ b/test/core/end2end/no_server_test.c
@@ -85,8 +85,8 @@ int main(int argc, char **argv) {
   GPR_ASSERT(status == GRPC_STATUS_DEADLINE_EXCEEDED);
 
   grpc_completion_queue_shutdown(cq);
-  while (grpc_completion_queue_next(cq, gpr_inf_future).type !=
-         GRPC_QUEUE_SHUTDOWN)
+  while (grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME))
+             .type != GRPC_QUEUE_SHUTDOWN)
     ;
   grpc_completion_queue_destroy(cq);
   grpc_call_destroy(call);
diff --git a/test/core/end2end/tests/max_message_length.c b/test/core/end2end/tests/max_message_length.c
index 9d716f11358c537bfa319fe46f308d93830fac3d..ea59a9385fe7db9d1de5f5dd5e40500738027932 100644
--- a/test/core/end2end/tests/max_message_length.c
+++ b/test/core/end2end/tests/max_message_length.c
@@ -129,7 +129,8 @@ static void test_max_message_length(grpc_end2end_test_config config) {
   cqv = cq_verifier_create(f.cq);
 
   c = grpc_channel_create_call(f.client, f.cq, "/foo",
-                               "foo.test.google.fr:1234", gpr_inf_future);
+                               "foo.test.google.fr:1234",
+                               gpr_inf_future(GPR_CLOCK_REALTIME));
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
diff --git a/test/core/fling/client.c b/test/core/fling/client.c
index 6741a9dec849ca07fdcec0bf940af3fd53f7e6ea..2b196543792b232c0c828e80ab4efc48d91f2a4a 100644
--- a/test/core/fling/client.c
+++ b/test/core/fling/client.c
@@ -89,24 +89,26 @@ static void init_ping_pong_request(void) {
 }
 
 static void step_ping_pong_request(void) {
-  call = grpc_channel_create_call(channel, cq, "/Reflector/reflectUnary",
-                                  "localhost", gpr_inf_future);
+  call =
+      grpc_channel_create_call(channel, cq, "/Reflector/reflectUnary",
+                               "localhost", gpr_inf_future(GPR_CLOCK_REALTIME));
   GPR_ASSERT(GRPC_CALL_OK ==
              grpc_call_start_batch(call, ops, op - ops, (void *)1));
-  grpc_completion_queue_next(cq, gpr_inf_future);
+  grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME));
   grpc_call_destroy(call);
   grpc_byte_buffer_destroy(response_payload_recv);
   call = NULL;
 }
 
 static void init_ping_pong_stream(void) {
-  call = grpc_channel_create_call(channel, cq, "/Reflector/reflectStream",
-                                  "localhost", gpr_inf_future);
+  call =
+      grpc_channel_create_call(channel, cq, "/Reflector/reflectStream",
+                               "localhost", gpr_inf_future(GPR_CLOCK_REALTIME));
   stream_init_op.op = GRPC_OP_SEND_INITIAL_METADATA;
   stream_init_op.data.send_initial_metadata.count = 0;
   GPR_ASSERT(GRPC_CALL_OK ==
              grpc_call_start_batch(call, &stream_init_op, 1, (void *)1));
-  grpc_completion_queue_next(cq, gpr_inf_future);
+  grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME));
 
   grpc_metadata_array_init(&initial_metadata_recv);
 
@@ -119,7 +121,7 @@ static void init_ping_pong_stream(void) {
 static void step_ping_pong_stream(void) {
   GPR_ASSERT(GRPC_CALL_OK ==
              grpc_call_start_batch(call, stream_step_ops, 2, (void *)1));
-  grpc_completion_queue_next(cq, gpr_inf_future);
+  grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME));
   grpc_byte_buffer_destroy(response_payload_recv);
 }
 
@@ -208,8 +210,8 @@ int main(int argc, char **argv) {
 
   grpc_channel_destroy(channel);
   grpc_completion_queue_shutdown(cq);
-  while (grpc_completion_queue_next(cq, gpr_inf_future).type !=
-         GRPC_QUEUE_SHUTDOWN)
+  while (grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME))
+             .type != GRPC_QUEUE_SHUTDOWN)
     ;
   grpc_completion_queue_destroy(cq);
   grpc_byte_buffer_destroy(the_buffer);
diff --git a/test/core/fling/server.c b/test/core/fling/server.c
index 468013c3ecc3f680cb7d123456dd486f87bbb65b..082bbd368a7b63d9869101e6fd4d3b6a4403a549 100644
--- a/test/core/fling/server.c
+++ b/test/core/fling/server.c
@@ -242,7 +242,7 @@ int main(int argc, char **argv) {
     }
     ev = grpc_completion_queue_next(
         cq, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                         gpr_time_from_micros(1000000)));
+                         gpr_time_from_micros(1000000, GPR_TIMESPAN)));
     s = ev.tag;
     switch (ev.type) {
       case GRPC_OP_COMPLETE:
diff --git a/test/core/httpcli/httpcli_test.c b/test/core/httpcli/httpcli_test.c
index ca0b2d1519a603825477c89189b33368594abaa3..4801eb3e39a6306fd2ced1add90b6b6fd164dfa9 100644
--- a/test/core/httpcli/httpcli_test.c
+++ b/test/core/httpcli/httpcli_test.c
@@ -145,8 +145,8 @@ int main(int argc, char **argv) {
   gpr_free(args[0]);
   gpr_free(args[2]);
 
-  gpr_sleep_until(
-      gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(5)));
+  gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                               gpr_time_from_seconds(5, GPR_TIMESPAN)));
 
   grpc_test_init(argc, argv);
   grpc_init();
diff --git a/test/core/iomgr/alarm_heap_test.c b/test/core/iomgr/alarm_heap_test.c
index b3e1e64d0feb1b42fc33e77b4de46c5d5af8287e..66b6e4cb64fbd35dbb995e135231c0cc2f47fdcc 100644
--- a/test/core/iomgr/alarm_heap_test.c
+++ b/test/core/iomgr/alarm_heap_test.c
@@ -44,6 +44,7 @@ static gpr_timespec random_deadline(void) {
   gpr_timespec ts;
   ts.tv_sec = rand();
   ts.tv_nsec = rand();
+  ts.clock_type = GPR_CLOCK_REALTIME;
   return ts;
 }
 
@@ -101,7 +102,7 @@ static int *all_top(grpc_alarm_heap *pq, int *n) {
 
 static void check_pq_top(grpc_alarm *elements, grpc_alarm_heap *pq,
                          gpr_uint8 *inpq, int num_elements) {
-  gpr_timespec max_deadline = gpr_inf_past;
+  gpr_timespec max_deadline = gpr_inf_past(GPR_CLOCK_REALTIME);
   int *max_deadline_indices = gpr_malloc(num_elements * sizeof(int));
   int *top_elements;
   int num_max_deadline_indices = 0;
diff --git a/test/core/iomgr/alarm_list_test.c b/test/core/iomgr/alarm_list_test.c
index 225c449d4b0d8d143e90970f8674bbc5dbe0cfbb..56d662e61a3146b84dc4aafe00b93f631be35032 100644
--- a/test/core/iomgr/alarm_list_test.c
+++ b/test/core/iomgr/alarm_list_test.c
@@ -60,45 +60,51 @@ static void add_test(void) {
 
   /* 10 ms alarms.  will expire in the current epoch */
   for (i = 0; i < 10; i++) {
-    grpc_alarm_init(&alarms[i], gpr_time_add(start, gpr_time_from_millis(10)),
+    grpc_alarm_init(&alarms[i],
+                    gpr_time_add(start, gpr_time_from_millis(10, GPR_TIMESPAN)),
                     cb, (void *)(gpr_intptr)i, start);
   }
 
   /* 1010 ms alarms.  will expire in the next epoch */
   for (i = 10; i < 20; i++) {
-    grpc_alarm_init(&alarms[i], gpr_time_add(start, gpr_time_from_millis(1010)),
+    grpc_alarm_init(&alarms[i], gpr_time_add(start, gpr_time_from_millis(
+                                                        1010, GPR_TIMESPAN)),
                     cb, (void *)(gpr_intptr)i, start);
   }
 
   /* collect alarms.  Only the first batch should be ready. */
-  GPR_ASSERT(10 ==
-             grpc_alarm_check(
-                 NULL, gpr_time_add(start, gpr_time_from_millis(500)), NULL));
+  GPR_ASSERT(10 == grpc_alarm_check(NULL,
+                                    gpr_time_add(start, gpr_time_from_millis(
+                                                            500, GPR_TIMESPAN)),
+                                    NULL));
   for (i = 0; i < 20; i++) {
     GPR_ASSERT(cb_called[i][1] == (i < 10));
     GPR_ASSERT(cb_called[i][0] == 0);
   }
 
-  GPR_ASSERT(0 ==
-             grpc_alarm_check(
-                 NULL, gpr_time_add(start, gpr_time_from_millis(600)), NULL));
+  GPR_ASSERT(0 == grpc_alarm_check(
+                      NULL, gpr_time_add(
+                                start, gpr_time_from_millis(600, GPR_TIMESPAN)),
+                      NULL));
   for (i = 0; i < 30; i++) {
     GPR_ASSERT(cb_called[i][1] == (i < 10));
     GPR_ASSERT(cb_called[i][0] == 0);
   }
 
   /* collect the rest of the alarms */
-  GPR_ASSERT(10 ==
-             grpc_alarm_check(
-                 NULL, gpr_time_add(start, gpr_time_from_millis(1500)), NULL));
+  GPR_ASSERT(
+      10 == grpc_alarm_check(NULL, gpr_time_add(start, gpr_time_from_millis(
+                                                           1500, GPR_TIMESPAN)),
+                             NULL));
   for (i = 0; i < 30; i++) {
     GPR_ASSERT(cb_called[i][1] == (i < 20));
     GPR_ASSERT(cb_called[i][0] == 0);
   }
 
-  GPR_ASSERT(0 ==
-             grpc_alarm_check(
-                 NULL, gpr_time_add(start, gpr_time_from_millis(1600)), NULL));
+  GPR_ASSERT(0 == grpc_alarm_check(NULL,
+                                   gpr_time_add(start, gpr_time_from_millis(
+                                                           1600, GPR_TIMESPAN)),
+                                   NULL));
   for (i = 0; i < 30; i++) {
     GPR_ASSERT(cb_called[i][1] == (i < 20));
     GPR_ASSERT(cb_called[i][0] == 0);
@@ -107,24 +113,30 @@ static void add_test(void) {
   grpc_alarm_list_shutdown();
 }
 
+static gpr_timespec tfm(int m) {
+  gpr_timespec t = gpr_time_from_millis(m, GPR_TIMESPAN);
+  t.clock_type = GPR_CLOCK_REALTIME;
+  return t;
+}
+
 /* Cleaning up a list with pending alarms. */
 void destruction_test(void) {
   grpc_alarm alarms[5];
 
-  grpc_alarm_list_init(gpr_time_0);
+  grpc_alarm_list_init(gpr_time_0(GPR_CLOCK_REALTIME));
   memset(cb_called, 0, sizeof(cb_called));
 
-  grpc_alarm_init(&alarms[0], gpr_time_from_millis(100), cb,
-                  (void *)(gpr_intptr)0, gpr_time_0);
-  grpc_alarm_init(&alarms[1], gpr_time_from_millis(3), cb,
-                  (void *)(gpr_intptr)1, gpr_time_0);
-  grpc_alarm_init(&alarms[2], gpr_time_from_millis(100), cb,
-                  (void *)(gpr_intptr)2, gpr_time_0);
-  grpc_alarm_init(&alarms[3], gpr_time_from_millis(3), cb,
-                  (void *)(gpr_intptr)3, gpr_time_0);
-  grpc_alarm_init(&alarms[4], gpr_time_from_millis(1), cb,
-                  (void *)(gpr_intptr)4, gpr_time_0);
-  GPR_ASSERT(1 == grpc_alarm_check(NULL, gpr_time_from_millis(2), NULL));
+  grpc_alarm_init(&alarms[0], tfm(100), cb, (void *)(gpr_intptr)0,
+                  gpr_time_0(GPR_CLOCK_REALTIME));
+  grpc_alarm_init(&alarms[1], tfm(3), cb, (void *)(gpr_intptr)1,
+                  gpr_time_0(GPR_CLOCK_REALTIME));
+  grpc_alarm_init(&alarms[2], tfm(100), cb, (void *)(gpr_intptr)2,
+                  gpr_time_0(GPR_CLOCK_REALTIME));
+  grpc_alarm_init(&alarms[3], tfm(3), cb, (void *)(gpr_intptr)3,
+                  gpr_time_0(GPR_CLOCK_REALTIME));
+  grpc_alarm_init(&alarms[4], tfm(1), cb, (void *)(gpr_intptr)4,
+                  gpr_time_0(GPR_CLOCK_REALTIME));
+  GPR_ASSERT(1 == grpc_alarm_check(NULL, tfm(2), NULL));
   GPR_ASSERT(1 == cb_called[4][1]);
   grpc_alarm_cancel(&alarms[0]);
   grpc_alarm_cancel(&alarms[3]);
diff --git a/test/core/iomgr/fd_posix_test.c b/test/core/iomgr/fd_posix_test.c
index fe08ec495f142116f411768479f7d57d21da85e0..cd268661dbced4c9bf6e914c91db07a380334f1e 100644
--- a/test/core/iomgr/fd_posix_test.c
+++ b/test/core/iomgr/fd_posix_test.c
@@ -249,7 +249,7 @@ static int server_start(server *sv) {
 static void server_wait_and_shutdown(server *sv) {
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (!sv->done) {
-    grpc_pollset_work(&g_pollset, gpr_inf_future);
+    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
@@ -356,7 +356,7 @@ static void client_start(client *cl, int port) {
 static void client_wait_and_shutdown(client *cl) {
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (!cl->done) {
-    grpc_pollset_work(&g_pollset, gpr_inf_future);
+    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
@@ -445,7 +445,7 @@ static void test_grpc_fd_change(void) {
   /* And now wait for it to run. */
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (a.cb_that_ran == NULL) {
-    grpc_pollset_work(&g_pollset, gpr_inf_future);
+    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   GPR_ASSERT(a.cb_that_ran == first_read_callback);
   gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
@@ -463,7 +463,7 @@ static void test_grpc_fd_change(void) {
 
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (b.cb_that_ran == NULL) {
-    grpc_pollset_work(&g_pollset, gpr_inf_future);
+    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   /* Except now we verify that second_read_callback ran instead */
   GPR_ASSERT(b.cb_that_ran == second_read_callback);
diff --git a/test/core/iomgr/tcp_client_posix_test.c b/test/core/iomgr/tcp_client_posix_test.c
index 710cd725df4ce0f834604755853fb72298c247b7..637886a7383b40ca3e8aa3c051f6d5240c3aa739 100644
--- a/test/core/iomgr/tcp_client_posix_test.c
+++ b/test/core/iomgr/tcp_client_posix_test.c
@@ -79,6 +79,8 @@ void test_succeeds(void) {
   int r;
   int connections_complete_before;
 
+  gpr_log(GPR_DEBUG, "test_succeeds");
+
   memset(&addr, 0, sizeof(addr));
   addr.sin_family = AF_INET;
 
@@ -95,7 +97,8 @@ void test_succeeds(void) {
   /* connect to it */
   GPR_ASSERT(getsockname(svr_fd, (struct sockaddr *)&addr, &addr_len) == 0);
   grpc_tcp_client_connect(must_succeed, NULL, &g_pollset_set,
-                          (struct sockaddr *)&addr, addr_len, gpr_inf_future);
+                          (struct sockaddr *)&addr, addr_len,
+                          gpr_inf_future(GPR_CLOCK_REALTIME));
 
   /* await the connection */
   do {
@@ -119,6 +122,8 @@ void test_fails(void) {
   socklen_t addr_len = sizeof(addr);
   int connections_complete_before;
 
+  gpr_log(GPR_DEBUG, "test_fails");
+
   memset(&addr, 0, sizeof(addr));
   addr.sin_family = AF_INET;
 
@@ -128,7 +133,8 @@ void test_fails(void) {
 
   /* connect to a broken address */
   grpc_tcp_client_connect(must_fail, NULL, &g_pollset_set,
-                          (struct sockaddr *)&addr, addr_len, gpr_inf_future);
+                          (struct sockaddr *)&addr, addr_len,
+                          gpr_inf_future(GPR_CLOCK_REALTIME));
 
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
 
@@ -144,13 +150,15 @@ void test_times_out(void) {
   struct sockaddr_in addr;
   socklen_t addr_len = sizeof(addr);
   int svr_fd;
-#define NUM_CLIENT_CONNECTS 10
+#define NUM_CLIENT_CONNECTS 100
   int client_fd[NUM_CLIENT_CONNECTS];
   int i;
   int r;
   int connections_complete_before;
   gpr_timespec connect_deadline;
 
+  gpr_log(GPR_DEBUG, "test_times_out");
+
   memset(&addr, 0, sizeof(addr));
   addr.sin_family = AF_INET;
 
@@ -186,12 +194,14 @@ void test_times_out(void) {
 
   /* Make sure the event doesn't trigger early */
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
-  while (gpr_time_cmp(gpr_time_add(connect_deadline, gpr_time_from_seconds(2)),
+  while (gpr_time_cmp(gpr_time_add(connect_deadline,
+                                   gpr_time_from_seconds(2, GPR_TIMESPAN)),
                       gpr_now(GPR_CLOCK_REALTIME)) > 0) {
     int is_after_deadline =
         gpr_time_cmp(connect_deadline, gpr_now(GPR_CLOCK_REALTIME)) <= 0;
     if (is_after_deadline &&
-        gpr_time_cmp(gpr_time_add(connect_deadline, gpr_time_from_seconds(1)),
+        gpr_time_cmp(gpr_time_add(connect_deadline,
+                                  gpr_time_from_seconds(1, GPR_TIMESPAN)),
                      gpr_now(GPR_CLOCK_REALTIME)) > 0) {
       /* allow some slack before insisting that things be done */
     } else {
diff --git a/test/core/iomgr/tcp_server_posix_test.c b/test/core/iomgr/tcp_server_posix_test.c
index 110a2eb1d90a83bf84e5948d620def9a0439dc59..83252a889bb0ffb9160858c7e3e522e0824fb3c4 100644
--- a/test/core/iomgr/tcp_server_posix_test.c
+++ b/test/core/iomgr/tcp_server_posix_test.c
@@ -125,7 +125,7 @@ static void test_connect(int n) {
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
 
   for (i = 0; i < n; i++) {
-    deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(4000);
+    deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
 
     nconnects_before = g_nconnects;
     clifd = socket(addr.ss_family, SOCK_STREAM, 0);
diff --git a/test/core/security/fetch_oauth2.c b/test/core/security/fetch_oauth2.c
index 767f724b62face229ee5180cd42f46b6dba98157..e4d422ccc2ee6d9edf51f114681d95526ff737fa 100644
--- a/test/core/security/fetch_oauth2.c
+++ b/test/core/security/fetch_oauth2.c
@@ -181,7 +181,8 @@ int main(int argc, char **argv) {
   grpc_credentials_get_request_metadata(creds, &sync.pollset, "", on_oauth2_response, &sync);
 
   gpr_mu_lock(GRPC_POLLSET_MU(&sync.pollset));
-  while (!sync.is_done) grpc_pollset_work(&sync.pollset, gpr_inf_future);
+  while (!sync.is_done)
+    grpc_pollset_work(&sync.pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
   gpr_mu_unlock(GRPC_POLLSET_MU(&sync.pollset));
 
   grpc_pollset_destroy(&sync.pollset);
diff --git a/test/core/security/json_token_test.c b/test/core/security/json_token_test.c
index b43e0425ee2af3e5164243ece5b915f09cd44965..da57cef15ceba5472595005bec58a4e5b8dffbc1 100644
--- a/test/core/security/json_token_test.c
+++ b/test/core/security/json_token_test.c
@@ -269,8 +269,8 @@ static void check_jwt_header(grpc_json *header) {
 
 static void check_jwt_claim(grpc_json *claim, const char *expected_audience,
                             const char *expected_scope) {
-  gpr_timespec expiration = {0, 0};
-  gpr_timespec issue_time = {0, 0};
+  gpr_timespec expiration = gpr_time_0(GPR_CLOCK_REALTIME);
+  gpr_timespec issue_time = gpr_time_0(GPR_CLOCK_REALTIME);
   gpr_timespec parsed_lifetime;
   grpc_json *iss = NULL;
   grpc_json *scope = NULL;
diff --git a/test/core/security/jwt_verifier_test.c b/test/core/security/jwt_verifier_test.c
index 46b96d9ecbd5bb4a91757ea80075dfc25fc54740..98db56c0efd9d8fa7bd090a1ef5e4f7b6d631d28 100644
--- a/test/core/security/jwt_verifier_test.c
+++ b/test/core/security/jwt_verifier_test.c
@@ -1,35 +1,35 @@
 /*
- *
- * 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.
- *
- */
+*
+*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/security/jwt_verifier.h"
 
@@ -115,7 +115,7 @@ static const char good_jwk_set[] =
     " ]"
     "}";
 
-static gpr_timespec expected_lifetime = {3600, 0};
+static gpr_timespec expected_lifetime = {3600, 0, GPR_TIMESPAN};
 
 static const char good_google_email_keys_part1[] =
     "{\"e6b5137873db8d2ef81e06a47289e6434ec8a165\": \"-----BEGIN "
@@ -201,9 +201,9 @@ static void test_expired_claims_failure(void) {
   gpr_slice s = gpr_slice_from_copied_string(expired_claims);
   grpc_json *json = grpc_json_parse_string_with_len(
       (char *)GPR_SLICE_START_PTR(s), GPR_SLICE_LENGTH(s));
-  gpr_timespec exp_iat = {100, 0};
-  gpr_timespec exp_exp = {120, 0};
-  gpr_timespec exp_nbf = {60, 0};
+  gpr_timespec exp_iat = {100, 0, GPR_CLOCK_REALTIME};
+  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);
   GPR_ASSERT(claims != NULL);
diff --git a/test/core/security/print_google_default_creds_token.c b/test/core/security/print_google_default_creds_token.c
index 5b55a4da134744be3cfd661da159f0beadcf26ba..0875cfb4fb939f33325ec6b6aa006917847d7898 100644
--- a/test/core/security/print_google_default_creds_token.c
+++ b/test/core/security/print_google_default_creds_token.c
@@ -95,7 +95,8 @@ int main(int argc, char **argv) {
                                         on_metadata_response, &sync);
 
   gpr_mu_lock(GRPC_POLLSET_MU(&sync.pollset));
-  while (!sync.is_done) grpc_pollset_work(&sync.pollset, gpr_inf_future);
+  while (!sync.is_done)
+    grpc_pollset_work(&sync.pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
   gpr_mu_unlock(GRPC_POLLSET_MU(&sync.pollset));
 
   grpc_credentials_release(creds);
diff --git a/test/core/security/verify_jwt.c b/test/core/security/verify_jwt.c
index e90be5de984b2b69aa8776f5928ef1003d9bf300..cb073f19c7c0b449b281b1ee0ef3e5bceab977d1 100644
--- a/test/core/security/verify_jwt.c
+++ b/test/core/security/verify_jwt.c
@@ -109,7 +109,8 @@ int main(int argc, char **argv) {
                            on_jwt_verification_done, &sync);
 
   gpr_mu_lock(GRPC_POLLSET_MU(&sync.pollset));
-  while (!sync.is_done) grpc_pollset_work(&sync.pollset, gpr_inf_future);
+  while (!sync.is_done)
+    grpc_pollset_work(&sync.pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
   gpr_mu_unlock(GRPC_POLLSET_MU(&sync.pollset));
 
   grpc_jwt_verifier_destroy(verifier);
diff --git a/test/core/statistics/census_log_tests.c b/test/core/statistics/census_log_tests.c
index a34dcf07c4d971e6bcb0e4bb3181abb22aee5cfd..3292f8a64d2b7f3cef6105ee2fa7e0b19fd413a5 100644
--- a/test/core/statistics/census_log_tests.c
+++ b/test/core/statistics/census_log_tests.c
@@ -237,7 +237,8 @@ static void reader_thread(void* arg) {
   gpr_timespec interval;
   int counter = 0;
   printf("   Reader starting\n");
-  interval = gpr_time_from_micros(args->read_iteration_interval_in_msec * 1000);
+  interval = gpr_time_from_micros(args->read_iteration_interval_in_msec * 1000,
+                                  GPR_TIMESPAN);
   gpr_mu_lock(args->mu);
   while (!args->stop_flag && records_read < args->total_records) {
     gpr_cv_wait(&args->stop, args->mu, interval);
@@ -310,7 +311,7 @@ static void multiple_writers_single_reader(int circular_log) {
   /* Wait for writers to finish. */
   gpr_mu_lock(&writers_mu);
   while (writers_count != 0) {
-    gpr_cv_wait(&writers_done, &writers_mu, gpr_inf_future);
+    gpr_cv_wait(&writers_done, &writers_mu, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   gpr_mu_unlock(&writers_mu);
   gpr_mu_destroy(&writers_mu);
@@ -323,7 +324,7 @@ static void multiple_writers_single_reader(int circular_log) {
   }
   /* wait for reader to finish */
   while (reader.running) {
-    gpr_cv_wait(&reader_done, &reader_mu, gpr_inf_future);
+    gpr_cv_wait(&reader_done, &reader_mu, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   if (circular_log) {
     /* Assert that there were no out-of-space errors. */
diff --git a/test/core/statistics/trace_test.c b/test/core/statistics/trace_test.c
index b13fd03f70b11421b19e80f5a9bd141e1bc0a04b..187884d90fd19742f9ef599593709b07957854ae 100644
--- a/test/core/statistics/trace_test.c
+++ b/test/core/statistics/trace_test.c
@@ -136,7 +136,7 @@ static void test_concurrency(void) {
   gpr_mu_lock(&arg.mu);
   while (arg.num_done < NUM_THREADS) {
     gpr_log(GPR_INFO, "num done %d", arg.num_done);
-    gpr_cv_wait(&arg.done, &arg.mu, gpr_inf_future);
+    gpr_cv_wait(&arg.done, &arg.mu, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   gpr_mu_unlock(&arg.mu);
   census_tracing_shutdown();
diff --git a/test/core/statistics/window_stats_test.c b/test/core/statistics/window_stats_test.c
index 1c66a874070d74aa4b2774e46372b19cd58d9766..9e637ccce9bc27dd9c45a11c323aef0e9bb9b669 100644
--- a/test/core/statistics/window_stats_test.c
+++ b/test/core/statistics/window_stats_test.c
@@ -290,8 +290,8 @@ void infinite_interval_test(void) {
   int i;
   const int count = 100000;
   gpr_timespec increment = {0, 0};
-  struct census_window_stats* stats =
-      census_window_stats_create(1, &gpr_inf_future, 10, &kMyStatInfo);
+  struct census_window_stats* stats = census_window_stats_create(
+      1, &gpr_inf_future(GPR_CLOCK_REALTIME), 10, &kMyStatInfo);
   srand(gpr_now(GPR_CLOCK_REALTIME).tv_nsec);
   for (i = 0; i < count; i++) {
     increment.tv_sec = rand() % 21600; /* 6 hours */
diff --git a/test/core/support/cancellable_test.c b/test/core/support/cancellable_test.c
index 2f4b67a7857c931cb773275713326a0787b0eb28..9b321d388ec578b23f34218654ca9a1d4d9221ff 100644
--- a/test/core/support/cancellable_test.c
+++ b/test/core/support/cancellable_test.c
@@ -55,7 +55,8 @@ struct test {
 static void thd_body(void *v) {
   struct test *t = v;
   gpr_mu_lock(&t->mu);
-  while (!gpr_cv_cancellable_wait(&t->cv, &t->mu, gpr_inf_future, &t->cancel)) {
+  while (!gpr_cv_cancellable_wait(
+      &t->cv, &t->mu, gpr_inf_future(GPR_CLOCK_REALTIME), &t->cancel)) {
   }
   t->n--;
   if (t->n == 0) {
@@ -82,24 +83,29 @@ static void test(void) {
 
   /* Test timeout on event wait for uncancelled gpr_cancellable */
   interval = gpr_now(GPR_CLOCK_REALTIME);
-  gpr_event_cancellable_wait(&t.ev, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                                                 gpr_time_from_micros(1000000)),
-                             &t.cancel);
+  gpr_event_cancellable_wait(
+      &t.ev, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                          gpr_time_from_micros(1000000, GPR_TIMESPAN)),
+      &t.cancel);
   interval = gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), interval);
-  GPR_ASSERT(gpr_time_cmp(interval, gpr_time_from_micros(500000)) >= 0);
-  GPR_ASSERT(gpr_time_cmp(gpr_time_from_micros(2000000), interval) >= 0);
+  GPR_ASSERT(
+      gpr_time_cmp(interval, gpr_time_from_micros(500000, GPR_TIMESPAN)) >= 0);
+  GPR_ASSERT(
+      gpr_time_cmp(gpr_time_from_micros(2000000, GPR_TIMESPAN), interval) >= 0);
 
   /* Test timeout on cv wait for uncancelled gpr_cancellable */
   gpr_mu_lock(&t.mu);
   interval = gpr_now(GPR_CLOCK_REALTIME);
   while (!gpr_cv_cancellable_wait(
-      &t.cv, &t.mu,
-      gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_micros(1000000)),
+      &t.cv, &t.mu, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                 gpr_time_from_micros(1000000, GPR_TIMESPAN)),
       &t.cancel)) {
   }
   interval = gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), interval);
-  GPR_ASSERT(gpr_time_cmp(interval, gpr_time_from_micros(500000)) >= 0);
-  GPR_ASSERT(gpr_time_cmp(gpr_time_from_micros(2000000), interval) >= 0);
+  GPR_ASSERT(
+      gpr_time_cmp(interval, gpr_time_from_micros(500000, GPR_TIMESPAN)) >= 0);
+  GPR_ASSERT(
+      gpr_time_cmp(gpr_time_from_micros(2000000, GPR_TIMESPAN), interval) >= 0);
   gpr_mu_unlock(&t.mu);
 
   /* Create some threads.  They all wait until cancelled; the last to finish
@@ -113,8 +119,9 @@ static void test(void) {
 
   /* Wait a second, and check that no threads have finished waiting. */
   gpr_mu_lock(&t.mu);
-  gpr_cv_wait(&t.cv, &t.mu, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                                         gpr_time_from_micros(1000000)));
+  gpr_cv_wait(&t.cv, &t.mu,
+              gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                           gpr_time_from_micros(1000000, GPR_TIMESPAN)));
   GPR_ASSERT(t.n == n);
   gpr_mu_unlock(&t.mu);
 
@@ -125,28 +132,31 @@ static void test(void) {
   GPR_ASSERT(gpr_cancellable_is_cancelled(&t.cancel));
 
   /* Wait for threads to finish. */
-  gpr_event_wait(&t.done, gpr_inf_future);
+  gpr_event_wait(&t.done, gpr_inf_future(GPR_CLOCK_REALTIME));
   GPR_ASSERT(t.n == 0);
 
   /* Test timeout on cv wait for cancelled gpr_cancellable */
   gpr_mu_lock(&t.mu);
   interval = gpr_now(GPR_CLOCK_REALTIME);
   while (!gpr_cv_cancellable_wait(
-      &t.cv, &t.mu,
-      gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_micros(1000000)),
+      &t.cv, &t.mu, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                 gpr_time_from_micros(1000000, GPR_TIMESPAN)),
       &t.cancel)) {
   }
   interval = gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), interval);
-  GPR_ASSERT(gpr_time_cmp(gpr_time_from_micros(100000), interval) >= 0);
+  GPR_ASSERT(
+      gpr_time_cmp(gpr_time_from_micros(100000, GPR_TIMESPAN), interval) >= 0);
   gpr_mu_unlock(&t.mu);
 
   /* Test timeout on event wait for cancelled gpr_cancellable */
   interval = gpr_now(GPR_CLOCK_REALTIME);
-  gpr_event_cancellable_wait(&t.ev, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                                                 gpr_time_from_micros(1000000)),
-                             &t.cancel);
+  gpr_event_cancellable_wait(
+      &t.ev, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                          gpr_time_from_micros(1000000, GPR_TIMESPAN)),
+      &t.cancel);
   interval = gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), interval);
-  GPR_ASSERT(gpr_time_cmp(gpr_time_from_micros(100000), interval) >= 0);
+  GPR_ASSERT(
+      gpr_time_cmp(gpr_time_from_micros(100000, GPR_TIMESPAN), interval) >= 0);
 
   gpr_mu_destroy(&t.mu);
   gpr_cv_destroy(&t.cv);
diff --git a/test/core/support/sync_test.c b/test/core/support/sync_test.c
index 99be5cdc9058230a604f04d84b05bd79b552070f..f729eb0b924ec97faaf177e20f6d0ccc4cbe6ffc 100644
--- a/test/core/support/sync_test.c
+++ b/test/core/support/sync_test.c
@@ -81,13 +81,14 @@ void queue_destroy(queue *q) {
 void queue_append(queue *q, int x) {
   gpr_mu_lock(&q->mu);
   /* To wait for a predicate without a deadline, loop on the negation of the
-     predicate, and use gpr_cv_wait(..., gpr_inf_future) inside the loop
+     predicate, and use gpr_cv_wait(..., gpr_inf_future(GPR_CLOCK_REALTIME))
+     inside the loop
      to release the lock, wait, and reacquire on each iteration.  Code that
      makes the condition true should use gpr_cv_broadcast() on the
      corresponding condition variable.  The predicate must be on state
      protected by the lock.  */
   while (q->length == N) {
-    gpr_cv_wait(&q->non_full, &q->mu, gpr_inf_future);
+    gpr_cv_wait(&q->non_full, &q->mu, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   if (q->length == 0) { /* Wake threads blocked in queue_remove(). */
     /* It's normal to use gpr_cv_broadcast() or gpr_signal() while
@@ -209,7 +210,7 @@ static void test_create_threads(struct test *m, void (*body)(void *arg)) {
 static void test_wait(struct test *m) {
   gpr_mu_lock(&m->mu);
   while (m->done != 0) {
-    gpr_cv_wait(&m->done_cv, &m->mu, gpr_inf_future);
+    gpr_cv_wait(&m->done_cv, &m->mu, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   gpr_mu_unlock(&m->mu);
 }
@@ -244,8 +245,8 @@ static void test(const char *name, void (*body)(void *m),
   struct test *m;
   gpr_timespec start = gpr_now(GPR_CLOCK_REALTIME);
   gpr_timespec time_taken;
-  gpr_timespec deadline =
-      gpr_time_add(start, gpr_time_from_micros(timeout_s * 1000000));
+  gpr_timespec deadline = gpr_time_add(
+      start, gpr_time_from_micros(timeout_s * 1000000, GPR_TIMESPAN));
   fprintf(stderr, "%s:", name);
   while (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0) {
     iterations <<= 1;
@@ -306,7 +307,7 @@ static void inc_by_turns(void *v /*=m*/) {
   for (i = 0; i != m->iterations; i++) {
     gpr_mu_lock(&m->mu);
     while ((m->counter % m->threads) != id) {
-      gpr_cv_wait(&m->cv, &m->mu, gpr_inf_future);
+      gpr_cv_wait(&m->cv, &m->mu, gpr_inf_future(GPR_CLOCK_REALTIME));
     }
     m->counter++;
     gpr_cv_broadcast(&m->cv);
@@ -323,8 +324,8 @@ static void inc_with_1ms_delay(void *v /*=m*/) {
   for (i = 0; i != m->iterations; i++) {
     gpr_timespec deadline;
     gpr_mu_lock(&m->mu);
-    deadline =
-        gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_micros(1000));
+    deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                            gpr_time_from_micros(1000, GPR_TIMESPAN));
     while (!gpr_cv_wait(&m->cv, &m->mu, deadline)) {
     }
     m->counter++;
@@ -340,8 +341,8 @@ static void inc_with_1ms_delay_event(void *v /*=m*/) {
   gpr_int64 i;
   for (i = 0; i != m->iterations; i++) {
     gpr_timespec deadline;
-    deadline =
-        gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_micros(1000));
+    deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                            gpr_time_from_micros(1000, GPR_TIMESPAN));
     GPR_ASSERT(gpr_event_wait(&m->event, deadline) == NULL);
     gpr_mu_lock(&m->mu);
     m->counter++;
@@ -379,14 +380,15 @@ static void consumer(void *v /*=m*/) {
   gpr_int64 i;
   int value;
   for (i = 0; i != n; i++) {
-    queue_remove(&m->q, &value, gpr_inf_future);
+    queue_remove(&m->q, &value, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   gpr_mu_lock(&m->mu);
   m->counter = n;
   gpr_mu_unlock(&m->mu);
-  GPR_ASSERT(!queue_remove(&m->q, &value,
-                           gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                                        gpr_time_from_micros(1000000))));
+  GPR_ASSERT(
+      !queue_remove(&m->q, &value,
+                    gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                 gpr_time_from_micros(1000000, GPR_TIMESPAN))));
   mark_thread_done(m);
 }
 
@@ -426,7 +428,8 @@ static void refcheck(void *v /*=m*/) {
   struct test *m = v;
   gpr_int64 n = m->iterations * m->threads;
   gpr_int64 i;
-  GPR_ASSERT(gpr_event_wait(&m->event, gpr_inf_future) == (void *)1);
+  GPR_ASSERT(gpr_event_wait(&m->event, gpr_inf_future(GPR_CLOCK_REALTIME)) ==
+             (void *)1);
   GPR_ASSERT(gpr_event_get(&m->event) == (void *)1);
   for (i = 1; i != n; i++) {
     GPR_ASSERT(!gpr_unref(&m->refcount));
diff --git a/test/core/support/thd_test.c b/test/core/support/thd_test.c
index bb3d54a262766795d220ae971485350c740e650e..7232cd9f5ba6a525ea5268fee4bf6c24ac6770f0 100644
--- a/test/core/support/thd_test.c
+++ b/test/core/support/thd_test.c
@@ -79,7 +79,7 @@ static void test(void) {
   }
   gpr_mu_lock(&t.mu);
   while (!t.is_done) {
-    gpr_cv_wait(&t.done_cv, &t.mu, gpr_inf_future);
+    gpr_cv_wait(&t.done_cv, &t.mu, gpr_inf_future(GPR_CLOCK_REALTIME));
   }
   gpr_mu_unlock(&t.mu);
   GPR_ASSERT(t.n == 0);
diff --git a/test/core/support/time_test.c b/test/core/support/time_test.c
index c1dce777b09326cd94e9ee38e20102db1dee609a..594863c2788ef5651dd74c4b2581484e301dbd03 100644
--- a/test/core/support/time_test.c
+++ b/test/core/support/time_test.c
@@ -91,10 +91,10 @@ static void ts_to_s(gpr_timespec t,
 static void test_values(void) {
   int i;
 
-  gpr_timespec x = gpr_time_0;
+  gpr_timespec x = gpr_time_0(GPR_CLOCK_REALTIME);
   GPR_ASSERT(x.tv_sec == 0 && x.tv_nsec == 0);
 
-  x = gpr_inf_future;
+  x = gpr_inf_future(GPR_CLOCK_REALTIME);
   fprintf(stderr, "far future ");
   u_to_s(x.tv_sec, 16, 16, &to_fp, stderr);
   fprintf(stderr, "\n");
@@ -103,7 +103,7 @@ static void test_values(void) {
   ts_to_s(x, &to_fp, stderr);
   fprintf(stderr, "\n");
 
-  x = gpr_inf_past;
+  x = gpr_inf_past(GPR_CLOCK_REALTIME);
   fprintf(stderr, "far past   ");
   u_to_s(x.tv_sec, 16, 16, &to_fp, stderr);
   fprintf(stderr, "\n");
@@ -113,37 +113,37 @@ static void test_values(void) {
   fprintf(stderr, "\n");
 
   for (i = 1; i != 1000 * 1000 * 1000; i *= 10) {
-    x = gpr_time_from_micros(i);
+    x = gpr_time_from_micros(i, GPR_TIMESPAN);
     GPR_ASSERT(x.tv_sec == i / GPR_US_PER_SEC &&
                x.tv_nsec == (i % GPR_US_PER_SEC) * GPR_NS_PER_US);
-    x = gpr_time_from_nanos(i);
+    x = gpr_time_from_nanos(i, GPR_TIMESPAN);
     GPR_ASSERT(x.tv_sec == i / GPR_NS_PER_SEC &&
                x.tv_nsec == (i % GPR_NS_PER_SEC));
-    x = gpr_time_from_millis(i);
+    x = gpr_time_from_millis(i, GPR_TIMESPAN);
     GPR_ASSERT(x.tv_sec == i / GPR_MS_PER_SEC &&
                x.tv_nsec == (i % GPR_MS_PER_SEC) * GPR_NS_PER_MS);
   }
 
   /* Test possible overflow in conversion of -ve values. */
-  x = gpr_time_from_micros(-(LONG_MAX - 999997));
+  x = gpr_time_from_micros(-(LONG_MAX - 999997), GPR_TIMESPAN);
   GPR_ASSERT(x.tv_sec < 0);
   GPR_ASSERT(x.tv_nsec >= 0 && x.tv_nsec < GPR_NS_PER_SEC);
 
-  x = gpr_time_from_nanos(-(LONG_MAX - 999999997));
+  x = gpr_time_from_nanos(-(LONG_MAX - 999999997), GPR_TIMESPAN);
   GPR_ASSERT(x.tv_sec < 0);
   GPR_ASSERT(x.tv_nsec >= 0 && x.tv_nsec < GPR_NS_PER_SEC);
 
-  x = gpr_time_from_millis(-(LONG_MAX - 997));
+  x = gpr_time_from_millis(-(LONG_MAX - 997), GPR_TIMESPAN);
   GPR_ASSERT(x.tv_sec < 0);
   GPR_ASSERT(x.tv_nsec >= 0 && x.tv_nsec < GPR_NS_PER_SEC);
 
   /* Test general -ve values. */
   for (i = -1; i > -1000 * 1000 * 1000; i *= 7) {
-    x = gpr_time_from_micros(i);
+    x = gpr_time_from_micros(i, GPR_TIMESPAN);
     GPR_ASSERT(x.tv_sec * GPR_US_PER_SEC + x.tv_nsec / GPR_NS_PER_US == i);
-    x = gpr_time_from_nanos(i);
+    x = gpr_time_from_nanos(i, GPR_TIMESPAN);
     GPR_ASSERT(x.tv_sec * GPR_NS_PER_SEC + x.tv_nsec == i);
-    x = gpr_time_from_millis(i);
+    x = gpr_time_from_millis(i, GPR_TIMESPAN);
     GPR_ASSERT(x.tv_sec * GPR_MS_PER_SEC + x.tv_nsec / GPR_NS_PER_MS == i);
   }
 }
@@ -158,17 +158,19 @@ static void test_add_sub(void) {
       for (k = 1; k <= 10000000; k *= 10) {
         int sum = i + j;
         int diff = i - j;
-        gpr_timespec it = gpr_time_from_micros(i * k);
-        gpr_timespec jt = gpr_time_from_micros(j * k);
+        gpr_timespec it = gpr_time_from_micros(i * k, GPR_TIMESPAN);
+        gpr_timespec jt = gpr_time_from_micros(j * k, GPR_TIMESPAN);
         gpr_timespec sumt = gpr_time_add(it, jt);
         gpr_timespec difft = gpr_time_sub(it, jt);
-        if (gpr_time_cmp(gpr_time_from_micros(sum * k), sumt) != 0) {
+        if (gpr_time_cmp(gpr_time_from_micros(sum * k, GPR_TIMESPAN), sumt) !=
+            0) {
           fprintf(stderr, "i %d  j %d  sum %d    sumt ", i, j, sum);
           ts_to_s(sumt, &to_fp, stderr);
           fprintf(stderr, "\n");
           GPR_ASSERT(0);
         }
-        if (gpr_time_cmp(gpr_time_from_micros(diff * k), difft) != 0) {
+        if (gpr_time_cmp(gpr_time_from_micros(diff * k, GPR_TIMESPAN), difft) !=
+            0) {
           fprintf(stderr, "i %d  j %d  diff %d    diff ", i, j, diff);
           ts_to_s(sumt, &to_fp, stderr);
           fprintf(stderr, "\n");
@@ -181,66 +183,76 @@ static void test_add_sub(void) {
 
 static void test_overflow(void) {
   /* overflow */
-  gpr_timespec x = gpr_time_from_micros(1);
+  gpr_timespec x = gpr_time_from_micros(1, GPR_TIMESPAN);
   do {
     x = gpr_time_add(x, x);
-  } while (gpr_time_cmp(x, gpr_inf_future) < 0);
-  GPR_ASSERT(gpr_time_cmp(x, gpr_inf_future) == 0);
-  x = gpr_time_from_micros(-1);
+  } while (gpr_time_cmp(x, gpr_inf_future(GPR_TIMESPAN)) < 0);
+  GPR_ASSERT(gpr_time_cmp(x, gpr_inf_future(GPR_TIMESPAN)) == 0);
+  x = gpr_time_from_micros(-1, GPR_TIMESPAN);
   do {
     x = gpr_time_add(x, x);
-  } while (gpr_time_cmp(x, gpr_inf_past) > 0);
-  GPR_ASSERT(gpr_time_cmp(x, gpr_inf_past) == 0);
+  } while (gpr_time_cmp(x, gpr_inf_past(GPR_TIMESPAN)) > 0);
+  GPR_ASSERT(gpr_time_cmp(x, gpr_inf_past(GPR_TIMESPAN)) == 0);
 }
 
 static void test_sticky_infinities(void) {
   int i;
   int j;
   int k;
-  static const gpr_timespec *infinity[] = {&gpr_inf_future, &gpr_inf_past};
-  static const gpr_timespec *addend[] = {&gpr_inf_future, &gpr_inf_past,
-                                         &gpr_time_0, NULL};
+  gpr_timespec infinity[2];
+  gpr_timespec addend[3];
+  infinity[0] = gpr_inf_future(GPR_TIMESPAN);
+  infinity[1] = gpr_inf_past(GPR_TIMESPAN);
+  addend[0] = gpr_inf_future(GPR_TIMESPAN);
+  addend[1] = gpr_inf_past(GPR_TIMESPAN);
+  addend[2] = gpr_time_0(GPR_TIMESPAN);
 
   /* Infinities are sticky */
   for (i = 0; i != sizeof(infinity) / sizeof(infinity[0]); i++) {
     for (j = 0; j != sizeof(addend) / sizeof(addend[0]); j++) {
-      if (addend[j] == NULL) {
-        for (k = -200; k <= 200; k++) {
-          gpr_timespec y = gpr_time_from_micros(k * 100000);
-          gpr_timespec x = gpr_time_add(*infinity[i], y);
-          GPR_ASSERT(gpr_time_cmp(x, *infinity[i]) == 0);
-          x = gpr_time_sub(*infinity[i], y);
-          GPR_ASSERT(gpr_time_cmp(x, *infinity[i]) == 0);
-        }
-      } else {
-        gpr_timespec x = gpr_time_add(*infinity[i], *addend[j]);
-        GPR_ASSERT(gpr_time_cmp(x, *infinity[i]) == 0);
-        x = gpr_time_sub(*infinity[i], *addend[j]);
-        GPR_ASSERT(gpr_time_cmp(x, *infinity[i]) == 0);
-      }
+      gpr_timespec x = gpr_time_add(infinity[i], addend[j]);
+      GPR_ASSERT(gpr_time_cmp(x, infinity[i]) == 0);
+      x = gpr_time_sub(infinity[i], addend[j]);
+      GPR_ASSERT(gpr_time_cmp(x, infinity[i]) == 0);
+    }
+    for (k = -200; k <= 200; k++) {
+      gpr_timespec y = gpr_time_from_micros(k * 100000, GPR_TIMESPAN);
+      gpr_timespec x = gpr_time_add(infinity[i], y);
+      GPR_ASSERT(gpr_time_cmp(x, infinity[i]) == 0);
+      x = gpr_time_sub(infinity[i], y);
+      GPR_ASSERT(gpr_time_cmp(x, infinity[i]) == 0);
     }
   }
 }
 
 static void test_similar(void) {
-  GPR_ASSERT(1 == gpr_time_similar(gpr_inf_future, gpr_inf_future, gpr_time_0));
-  GPR_ASSERT(1 == gpr_time_similar(gpr_inf_past, gpr_inf_past, gpr_time_0));
-  GPR_ASSERT(0 == gpr_time_similar(gpr_inf_past, gpr_inf_future, gpr_time_0));
-  GPR_ASSERT(0 == gpr_time_similar(gpr_inf_future, gpr_inf_past, gpr_time_0));
-  GPR_ASSERT(1 == gpr_time_similar(gpr_time_from_micros(10),
-                                   gpr_time_from_micros(10), gpr_time_0));
-  GPR_ASSERT(1 == gpr_time_similar(gpr_time_from_micros(10),
-                                   gpr_time_from_micros(15),
-                                   gpr_time_from_micros(10)));
-  GPR_ASSERT(1 == gpr_time_similar(gpr_time_from_micros(15),
-                                   gpr_time_from_micros(10),
-                                   gpr_time_from_micros(10)));
-  GPR_ASSERT(0 == gpr_time_similar(gpr_time_from_micros(10),
-                                   gpr_time_from_micros(25),
-                                   gpr_time_from_micros(10)));
-  GPR_ASSERT(0 == gpr_time_similar(gpr_time_from_micros(25),
-                                   gpr_time_from_micros(10),
-                                   gpr_time_from_micros(10)));
+  GPR_ASSERT(1 == gpr_time_similar(gpr_inf_future(GPR_TIMESPAN),
+                                   gpr_inf_future(GPR_TIMESPAN),
+                                   gpr_time_0(GPR_TIMESPAN)));
+  GPR_ASSERT(1 == gpr_time_similar(gpr_inf_past(GPR_TIMESPAN),
+                                   gpr_inf_past(GPR_TIMESPAN),
+                                   gpr_time_0(GPR_TIMESPAN)));
+  GPR_ASSERT(0 == gpr_time_similar(gpr_inf_past(GPR_TIMESPAN),
+                                   gpr_inf_future(GPR_TIMESPAN),
+                                   gpr_time_0(GPR_TIMESPAN)));
+  GPR_ASSERT(0 == gpr_time_similar(gpr_inf_future(GPR_TIMESPAN),
+                                   gpr_inf_past(GPR_TIMESPAN),
+                                   gpr_time_0(GPR_TIMESPAN)));
+  GPR_ASSERT(1 == gpr_time_similar(gpr_time_from_micros(10, GPR_TIMESPAN),
+                                   gpr_time_from_micros(10, GPR_TIMESPAN),
+                                   gpr_time_0(GPR_TIMESPAN)));
+  GPR_ASSERT(1 == gpr_time_similar(gpr_time_from_micros(10, GPR_TIMESPAN),
+                                   gpr_time_from_micros(15, GPR_TIMESPAN),
+                                   gpr_time_from_micros(10, GPR_TIMESPAN)));
+  GPR_ASSERT(1 == gpr_time_similar(gpr_time_from_micros(15, GPR_TIMESPAN),
+                                   gpr_time_from_micros(10, GPR_TIMESPAN),
+                                   gpr_time_from_micros(10, GPR_TIMESPAN)));
+  GPR_ASSERT(0 == gpr_time_similar(gpr_time_from_micros(10, GPR_TIMESPAN),
+                                   gpr_time_from_micros(25, GPR_TIMESPAN),
+                                   gpr_time_from_micros(10, GPR_TIMESPAN)));
+  GPR_ASSERT(0 == gpr_time_similar(gpr_time_from_micros(25, GPR_TIMESPAN),
+                                   gpr_time_from_micros(10, GPR_TIMESPAN),
+                                   gpr_time_from_micros(10, GPR_TIMESPAN)));
 }
 
 int main(int argc, char *argv[]) {
diff --git a/test/core/support/useful_test.c b/test/core/support/useful_test.c
index feaf4363795ea26683f37490fc358e869892fd72..cbf4f02e267f172e09c05eee7c81c44c14581b9b 100644
--- a/test/core/support/useful_test.c
+++ b/test/core/support/useful_test.c
@@ -39,6 +39,7 @@
 int main(int argc, char **argv) {
   int four[4];
   int five[5];
+  gpr_uint32 bitset = 0;
   grpc_test_init(argc, argv);
 
   GPR_ASSERT(GPR_MIN(1, 2) == 1);
@@ -55,5 +56,18 @@ int main(int argc, char **argv) {
   GPR_ASSERT(GPR_ARRAY_SIZE(four) == 4);
   GPR_ASSERT(GPR_ARRAY_SIZE(five) == 5);
 
+  GPR_ASSERT(GPR_BITCOUNT((1u << 31) - 1) == 31);
+  GPR_ASSERT(GPR_BITCOUNT(1u << 3) == 1);
+  GPR_ASSERT(GPR_BITCOUNT(0) == 0);
+
+  GPR_ASSERT(GPR_BITSET(&bitset, 3) == 8);
+  GPR_ASSERT(GPR_BITCOUNT(bitset) == 1);
+  GPR_ASSERT(GPR_BITGET(bitset, 3) == 1);
+  GPR_ASSERT(GPR_BITSET(&bitset, 1) == 10);
+  GPR_ASSERT(GPR_BITCOUNT(bitset) == 2);
+  GPR_ASSERT(GPR_BITCLEAR(&bitset, 3) == 2);
+  GPR_ASSERT(GPR_BITCOUNT(bitset) == 1);
+  GPR_ASSERT(GPR_BITGET(bitset, 3) == 0);
+
   return 0;
 }
diff --git a/test/core/surface/completion_queue_test.c b/test/core/surface/completion_queue_test.c
index 177adbebc274ed053edb4c364809dee1fa6bc67a..0e59ea4b226c957b1c2a064a745eb1c902f6f66a 100644
--- a/test/core/surface/completion_queue_test.c
+++ b/test/core/surface/completion_queue_test.c
@@ -52,7 +52,7 @@ static void *create_test_tag(void) {
 static void shutdown_and_destroy(grpc_completion_queue *cc) {
   grpc_event ev;
   grpc_completion_queue_shutdown(cc);
-  ev = grpc_completion_queue_next(cc, gpr_inf_past);
+  ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME));
   GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
   grpc_completion_queue_destroy(cc);
 }
@@ -89,7 +89,7 @@ static void test_cq_end_op(void) {
   grpc_cq_begin_op(cc);
   grpc_cq_end_op(cc, tag, 1, do_nothing_end_completion, NULL, &completion);
 
-  ev = grpc_completion_queue_next(cc, gpr_inf_past);
+  ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME));
   GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
   GPR_ASSERT(ev.tag == tag);
   GPR_ASSERT(ev.success);
@@ -103,8 +103,8 @@ static void test_shutdown_then_next_polling(void) {
 
   cc = grpc_completion_queue_create();
   grpc_completion_queue_shutdown(cc);
-  GPR_ASSERT(grpc_completion_queue_next(cc, gpr_inf_past).type ==
-             GRPC_QUEUE_SHUTDOWN);
+  GPR_ASSERT(grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME))
+                 .type == GRPC_QUEUE_SHUTDOWN);
   grpc_completion_queue_destroy(cc);
 }
 
@@ -114,8 +114,8 @@ static void test_shutdown_then_next_with_timeout(void) {
 
   cc = grpc_completion_queue_create();
   grpc_completion_queue_shutdown(cc);
-  GPR_ASSERT(grpc_completion_queue_next(cc, gpr_inf_future).type ==
-             GRPC_QUEUE_SHUTDOWN);
+  GPR_ASSERT(grpc_completion_queue_next(cc, gpr_inf_future(GPR_CLOCK_REALTIME))
+                 .type == GRPC_QUEUE_SHUTDOWN);
   grpc_completion_queue_destroy(cc);
 }
 
@@ -144,7 +144,8 @@ static void test_pluck(void) {
   }
 
   for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
-    ev = grpc_completion_queue_pluck(cc, tags[i], gpr_inf_past);
+    ev = grpc_completion_queue_pluck(cc, tags[i],
+                                     gpr_inf_past(GPR_CLOCK_REALTIME));
     GPR_ASSERT(ev.tag == tags[i]);
   }
 
@@ -156,7 +157,7 @@ static void test_pluck(void) {
 
   for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
     ev = grpc_completion_queue_pluck(cc, tags[GPR_ARRAY_SIZE(tags) - i - 1],
-                                     gpr_inf_past);
+                                     gpr_inf_past(GPR_CLOCK_REALTIME));
     GPR_ASSERT(ev.tag == tags[GPR_ARRAY_SIZE(tags) - i - 1]);
   }
 
diff --git a/test/core/transport/chttp2/timeout_encoding_test.c b/test/core/transport/chttp2/timeout_encoding_test.c
index 5bfb9cf0ec160be593934c5ef9acfe4b07ba78e1..ba6c3191f1edbd50f707afee949ed7dc27ce416c 100644
--- a/test/core/transport/chttp2/timeout_encoding_test.c
+++ b/test/core/transport/chttp2/timeout_encoding_test.c
@@ -54,34 +54,35 @@ static void assert_encodes_as(gpr_timespec ts, const char *s) {
 
 void test_encoding(void) {
   LOG_TEST("test_encoding");
-  assert_encodes_as(gpr_time_from_micros(-1), "1n");
-  assert_encodes_as(gpr_time_from_seconds(-10), "1n");
-  assert_encodes_as(gpr_time_from_nanos(10), "10n");
-  assert_encodes_as(gpr_time_from_nanos(999999999), "1S");
-  assert_encodes_as(gpr_time_from_micros(1), "1u");
-  assert_encodes_as(gpr_time_from_micros(10), "10u");
-  assert_encodes_as(gpr_time_from_micros(100), "100u");
-  assert_encodes_as(gpr_time_from_micros(890), "890u");
-  assert_encodes_as(gpr_time_from_micros(900), "900u");
-  assert_encodes_as(gpr_time_from_micros(901), "901u");
-  assert_encodes_as(gpr_time_from_millis(1), "1m");
-  assert_encodes_as(gpr_time_from_millis(2), "2m");
-  assert_encodes_as(gpr_time_from_micros(10001), "10100u");
-  assert_encodes_as(gpr_time_from_micros(999999), "1S");
-  assert_encodes_as(gpr_time_from_millis(1000), "1S");
-  assert_encodes_as(gpr_time_from_millis(2000), "2S");
-  assert_encodes_as(gpr_time_from_millis(2500), "2500m");
-  assert_encodes_as(gpr_time_from_millis(59900), "59900m");
-  assert_encodes_as(gpr_time_from_seconds(50), "50S");
-  assert_encodes_as(gpr_time_from_seconds(59), "59S");
-  assert_encodes_as(gpr_time_from_seconds(60), "1M");
-  assert_encodes_as(gpr_time_from_seconds(80), "80S");
-  assert_encodes_as(gpr_time_from_seconds(90), "90S");
-  assert_encodes_as(gpr_time_from_minutes(2), "2M");
-  assert_encodes_as(gpr_time_from_minutes(20), "20M");
-  assert_encodes_as(gpr_time_from_hours(1), "1H");
-  assert_encodes_as(gpr_time_from_hours(10), "10H");
-  assert_encodes_as(gpr_time_from_seconds(1000000000), "1000000000S");
+  assert_encodes_as(gpr_time_from_micros(-1, GPR_TIMESPAN), "1n");
+  assert_encodes_as(gpr_time_from_seconds(-10, GPR_TIMESPAN), "1n");
+  assert_encodes_as(gpr_time_from_nanos(10, GPR_TIMESPAN), "10n");
+  assert_encodes_as(gpr_time_from_nanos(999999999, GPR_TIMESPAN), "1S");
+  assert_encodes_as(gpr_time_from_micros(1, GPR_TIMESPAN), "1u");
+  assert_encodes_as(gpr_time_from_micros(10, GPR_TIMESPAN), "10u");
+  assert_encodes_as(gpr_time_from_micros(100, GPR_TIMESPAN), "100u");
+  assert_encodes_as(gpr_time_from_micros(890, GPR_TIMESPAN), "890u");
+  assert_encodes_as(gpr_time_from_micros(900, GPR_TIMESPAN), "900u");
+  assert_encodes_as(gpr_time_from_micros(901, GPR_TIMESPAN), "901u");
+  assert_encodes_as(gpr_time_from_millis(1, GPR_TIMESPAN), "1m");
+  assert_encodes_as(gpr_time_from_millis(2, GPR_TIMESPAN), "2m");
+  assert_encodes_as(gpr_time_from_micros(10001, GPR_TIMESPAN), "10100u");
+  assert_encodes_as(gpr_time_from_micros(999999, GPR_TIMESPAN), "1S");
+  assert_encodes_as(gpr_time_from_millis(1000, GPR_TIMESPAN), "1S");
+  assert_encodes_as(gpr_time_from_millis(2000, GPR_TIMESPAN), "2S");
+  assert_encodes_as(gpr_time_from_millis(2500, GPR_TIMESPAN), "2500m");
+  assert_encodes_as(gpr_time_from_millis(59900, GPR_TIMESPAN), "59900m");
+  assert_encodes_as(gpr_time_from_seconds(50, GPR_TIMESPAN), "50S");
+  assert_encodes_as(gpr_time_from_seconds(59, GPR_TIMESPAN), "59S");
+  assert_encodes_as(gpr_time_from_seconds(60, GPR_TIMESPAN), "1M");
+  assert_encodes_as(gpr_time_from_seconds(80, GPR_TIMESPAN), "80S");
+  assert_encodes_as(gpr_time_from_seconds(90, GPR_TIMESPAN), "90S");
+  assert_encodes_as(gpr_time_from_minutes(2, GPR_TIMESPAN), "2M");
+  assert_encodes_as(gpr_time_from_minutes(20, GPR_TIMESPAN), "20M");
+  assert_encodes_as(gpr_time_from_hours(1, GPR_TIMESPAN), "1H");
+  assert_encodes_as(gpr_time_from_hours(10, GPR_TIMESPAN), "10H");
+  assert_encodes_as(gpr_time_from_seconds(1000000000, GPR_TIMESPAN),
+                    "1000000000S");
 }
 
 static void assert_decodes_as(const char *buffer, gpr_timespec expected) {
@@ -91,7 +92,8 @@ static void assert_decodes_as(const char *buffer, gpr_timespec expected) {
   GPR_ASSERT(0 == gpr_time_cmp(got, expected));
 }
 
-void decode_suite(char ext, gpr_timespec (*answer)(long x)) {
+void decode_suite(char ext,
+                  gpr_timespec (*answer)(long x, gpr_clock_type clock)) {
   long test_vals[] = {1,       12,       123,       1234,     12345,   123456,
                       1234567, 12345678, 123456789, 98765432, 9876543, 987654,
                       98765,   9876,     987,       98,       9};
@@ -99,19 +101,19 @@ void decode_suite(char ext, gpr_timespec (*answer)(long x)) {
   char *input;
   for (i = 0; i < GPR_ARRAY_SIZE(test_vals); i++) {
     gpr_asprintf(&input, "%ld%c", test_vals[i], ext);
-    assert_decodes_as(input, answer(test_vals[i]));
+    assert_decodes_as(input, answer(test_vals[i], GPR_TIMESPAN));
     gpr_free(input);
 
     gpr_asprintf(&input, "   %ld%c", test_vals[i], ext);
-    assert_decodes_as(input, answer(test_vals[i]));
+    assert_decodes_as(input, answer(test_vals[i], GPR_TIMESPAN));
     gpr_free(input);
 
     gpr_asprintf(&input, "%ld %c", test_vals[i], ext);
-    assert_decodes_as(input, answer(test_vals[i]));
+    assert_decodes_as(input, answer(test_vals[i], GPR_TIMESPAN));
     gpr_free(input);
 
     gpr_asprintf(&input, "%ld %c  ", test_vals[i], ext);
-    assert_decodes_as(input, answer(test_vals[i]));
+    assert_decodes_as(input, answer(test_vals[i], GPR_TIMESPAN));
     gpr_free(input);
   }
 }
@@ -124,7 +126,8 @@ void test_decoding(void) {
   decode_suite('S', gpr_time_from_seconds);
   decode_suite('M', gpr_time_from_minutes);
   decode_suite('H', gpr_time_from_hours);
-  assert_decodes_as("1000000000000000000000u", gpr_inf_future);
+  assert_decodes_as("1000000000000000000000u",
+                    gpr_inf_future(GPR_CLOCK_REALTIME));
 }
 
 void test_decoding_fails(void) {
diff --git a/test/core/util/test_config.h b/test/core/util/test_config.h
index 321895316639e38afb4ff74db6724c3eaeb94837..063c797ce96038fe4eec062076b2f08385e58fa3 100644
--- a/test/core/util/test_config.h
+++ b/test/core/util/test_config.h
@@ -51,13 +51,15 @@ extern "C" {
 #define GRPC_TEST_SLOWDOWN_FACTOR \
   (GRPC_TEST_SLOWDOWN_BUILD_FACTOR * GRPC_TEST_SLOWDOWN_MACHINE_FACTOR)
 
-#define GRPC_TIMEOUT_SECONDS_TO_DEADLINE(x) \
-  gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), \
-               gpr_time_from_micros(GRPC_TEST_SLOWDOWN_FACTOR * 1e6 * (x)))
+#define GRPC_TIMEOUT_SECONDS_TO_DEADLINE(x)                                \
+  gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),                                \
+               gpr_time_from_micros(GRPC_TEST_SLOWDOWN_FACTOR * 1e6 * (x), \
+                                    GPR_TIMESPAN))
 
-#define GRPC_TIMEOUT_MILLIS_TO_DEADLINE(x)  \
-  gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), \
-               gpr_time_from_micros(GRPC_TEST_SLOWDOWN_FACTOR * 1e3 * (x)))
+#define GRPC_TIMEOUT_MILLIS_TO_DEADLINE(x)                                 \
+  gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),                                \
+               gpr_time_from_micros(GRPC_TEST_SLOWDOWN_FACTOR * 1e3 * (x), \
+                                    GPR_TIMESPAN))
 
 #ifndef GRPC_TEST_CUSTOM_PICK_PORT
 #define GRPC_TEST_PICK_PORT
diff --git a/test/cpp/common/auth_property_iterator_test.cc b/test/cpp/common/auth_property_iterator_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3d983fa31090cbbba5a22ab0207b78c61cf495ee
--- /dev/null
+++ b/test/cpp/common/auth_property_iterator_test.cc
@@ -0,0 +1,101 @@
+/*
+ *
+ * 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 <grpc++/auth_context.h>
+#include <gtest/gtest.h>
+#include "src/cpp/common/secure_auth_context.h"
+#include "src/core/security/security_context.h"
+
+namespace grpc {
+namespace {
+
+class TestAuthPropertyIterator : public AuthPropertyIterator {
+ public:
+  TestAuthPropertyIterator() {}
+  TestAuthPropertyIterator(const grpc_auth_property* property,
+                           const grpc_auth_property_iterator* iter)
+      : AuthPropertyIterator(property, iter) {}
+};
+
+class AuthPropertyIteratorTest : public ::testing::Test {
+ protected:
+  void SetUp() GRPC_OVERRIDE {
+    ctx_ = grpc_auth_context_create(NULL, 3);
+    ctx_->properties[0] = grpc_auth_property_init_from_cstring("name", "chapi");
+    ctx_->properties[1] = grpc_auth_property_init_from_cstring("name", "chapo");
+    ctx_->properties[2] = grpc_auth_property_init_from_cstring("foo", "bar");
+    ctx_->peer_identity_property_name = ctx_->properties[0].name;
+  }
+  void TearDown() GRPC_OVERRIDE {
+    GRPC_AUTH_CONTEXT_UNREF(ctx_, "AuthPropertyIteratorTest");
+  }
+  grpc_auth_context* ctx_;
+
+};
+
+TEST_F(AuthPropertyIteratorTest, DefaultCtor) {
+  TestAuthPropertyIterator iter1;
+  TestAuthPropertyIterator iter2;
+  EXPECT_EQ(iter1, iter2);
+}
+
+TEST_F(AuthPropertyIteratorTest, GeneralTest) {
+  grpc_auth_property_iterator c_iter =
+      grpc_auth_context_property_iterator(ctx_);
+  const grpc_auth_property* property =
+      grpc_auth_property_iterator_next(&c_iter);
+  TestAuthPropertyIterator iter(property, &c_iter);
+  TestAuthPropertyIterator empty_iter;
+  EXPECT_FALSE(iter == empty_iter);
+  AuthProperty p0 = *iter;
+  ++iter;
+  AuthProperty p1 = *iter;
+  iter++;
+  AuthProperty p2 = *iter;
+  EXPECT_EQ("name", p0.first);
+  EXPECT_EQ("chapi", p0.second);
+  EXPECT_EQ("name", p1.first);
+  EXPECT_EQ("chapo", p1.second);
+  EXPECT_EQ("foo", p2.first);
+  EXPECT_EQ("bar", p2.second);
+  ++iter;
+  EXPECT_EQ(empty_iter, iter);
+}
+
+}  // namespace
+}  // namespace grpc
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/test/cpp/common/secure_auth_context_test.cc b/test/cpp/common/secure_auth_context_test.cc
index a1819dc4d62433d8ff3b21f652a1817f12b97b7b..f18a04178efd69e3a92c92e2b2042a487147db39 100644
--- a/test/cpp/common/secure_auth_context_test.cc
+++ b/test/cpp/common/secure_auth_context_test.cc
@@ -48,6 +48,7 @@ TEST_F(SecureAuthContextTest, EmptyContext) {
   EXPECT_TRUE(context.GetPeerIdentityPropertyName().empty());
   EXPECT_TRUE(context.FindPropertyValues("").empty());
   EXPECT_TRUE(context.FindPropertyValues("whatever").empty());
+  EXPECT_TRUE(context.begin() == context.end());
 }
 
 TEST_F(SecureAuthContextTest, Properties) {
@@ -68,6 +69,51 @@ TEST_F(SecureAuthContextTest, Properties) {
   EXPECT_EQ("bar", bar[0]);
 }
 
+TEST_F(SecureAuthContextTest, Iterators) {
+  grpc_auth_context* ctx = grpc_auth_context_create(NULL, 3);
+  ctx->properties[0] = grpc_auth_property_init_from_cstring("name", "chapi");
+  ctx->properties[1] = grpc_auth_property_init_from_cstring("name", "chapo");
+  ctx->properties[2] = grpc_auth_property_init_from_cstring("foo", "bar");
+  ctx->peer_identity_property_name = ctx->properties[0].name;
+
+  SecureAuthContext context(ctx);
+  AuthPropertyIterator iter = context.begin();
+  EXPECT_TRUE(context.end() != iter);
+  AuthProperty p0 = *iter;
+  ++iter;
+  AuthProperty p1 = *iter;
+  iter++;
+  AuthProperty p2 = *iter;
+  EXPECT_EQ("name", p0.first);
+  EXPECT_EQ("chapi", p0.second);
+  EXPECT_EQ("name", p1.first);
+  EXPECT_EQ("chapo", p1.second);
+  EXPECT_EQ("foo", p2.first);
+  EXPECT_EQ("bar", p2.second);
+  ++iter;
+  EXPECT_EQ(context.end(), iter);
+  // Range-based for loop test.
+  int i = 0;
+  for (auto p : context) {
+    switch (i++) {
+      case 0:
+        EXPECT_EQ("name", p.first);
+        EXPECT_EQ("chapi", p.second);
+        break;
+      case 1:
+        EXPECT_EQ("name", p.first);
+        EXPECT_EQ("chapo", p.second);
+        break;
+      case 2:
+        EXPECT_EQ("foo", p.first);
+        EXPECT_EQ("bar", p.second);
+        break;
+      default:
+        EXPECT_TRUE(0);
+    }
+  }
+}
+
 }  // namespace
 }  // namespace grpc
 
diff --git a/test/cpp/end2end/client_crash_test.cc b/test/cpp/end2end/client_crash_test.cc
index 645226f3754d00b319f5ed155b853f4a10c585db..906f124c05815a5b260d1a4c18838dba76d4caf6 100644
--- a/test/cpp/end2end/client_crash_test.cc
+++ b/test/cpp/end2end/client_crash_test.cc
@@ -31,13 +31,10 @@
  *
  */
 
-#include <thread>
-
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 #include "test/cpp/util/echo_duplicate.grpc.pb.h"
 #include "test/cpp/util/echo.grpc.pb.h"
-#include "src/cpp/server/thread_pool.h"
 #include <grpc++/channel_arguments.h>
 #include <grpc++/channel_interface.h>
 #include <grpc++/client_context.h>
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 207dad5282738bd064a23a4f0f2755b2f10ff55a..89d9d635af36906e9f60fedf352f28742405f5db 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -35,7 +35,6 @@
 #include <thread>
 
 #include "src/core/security/credentials.h"
-#include "src/cpp/server/thread_pool.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 #include "test/cpp/util/echo_duplicate.grpc.pb.h"
@@ -46,6 +45,7 @@
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
+#include <grpc++/fixed_size_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
@@ -75,7 +75,7 @@ const char* kServerCancelAfterReads = "cancel_after_reads";
 void MaybeEchoDeadline(ServerContext* context, const EchoRequest* request,
                        EchoResponse* response) {
   if (request->has_param() && request->param().echo_deadline()) {
-    gpr_timespec deadline = gpr_inf_future;
+    gpr_timespec deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
     if (context->deadline() != system_clock::time_point::max()) {
       Timepoint2Timespec(context->deadline(), &deadline);
     }
@@ -117,14 +117,16 @@ class TestServiceImpl : public ::grpc::cpp::test::util::TestService::Service {
       while (!context->IsCancelled()) {
         gpr_sleep_until(gpr_time_add(
             gpr_now(GPR_CLOCK_REALTIME),
-            gpr_time_from_micros(request->param().client_cancel_after_us())));
+            gpr_time_from_micros(request->param().client_cancel_after_us(),
+                                 GPR_TIMESPAN)));
       }
       return Status::CANCELLED;
     } else if (request->has_param() &&
                request->param().server_cancel_after_us()) {
       gpr_sleep_until(gpr_time_add(
           gpr_now(GPR_CLOCK_REALTIME),
-          gpr_time_from_micros(request->param().server_cancel_after_us())));
+          gpr_time_from_micros(request->param().server_cancel_after_us(),
+                               GPR_TIMESPAN)));
       return Status::CANCELLED;
     } else {
       EXPECT_FALSE(context->IsCancelled());
@@ -260,7 +262,7 @@ class End2endTest : public ::testing::Test {
   TestServiceImpl service_;
   TestServiceImpl special_service_;
   TestServiceImplDupPkg dup_pkg_service_;
-  ThreadPool thread_pool_;
+  FixedSizeThreadPool thread_pool_;
 };
 
 static void SendRpc(grpc::cpp::test::util::TestService::Stub* stub,
@@ -375,7 +377,8 @@ TEST_F(End2endTest, EchoDeadlineForNoDeadlineRpc) {
   Status s = stub_->Echo(&context, request, &response);
   EXPECT_EQ(response.message(), request.message());
   EXPECT_TRUE(s.ok());
-  EXPECT_EQ(response.param().request_deadline(), gpr_inf_future.tv_sec);
+  EXPECT_EQ(response.param().request_deadline(),
+            gpr_inf_future(GPR_CLOCK_REALTIME).tv_sec);
 }
 
 TEST_F(End2endTest, UnimplementedRpc) {
@@ -530,7 +533,7 @@ TEST_F(End2endTest, BadCredentials) {
 
 void CancelRpc(ClientContext* context, int delay_us, TestServiceImpl* service) {
   gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                               gpr_time_from_micros(delay_us)));
+                               gpr_time_from_micros(delay_us, GPR_TIMESPAN)));
   while (!service->signal_client()) {
   }
   context->TryCancel();
diff --git a/test/cpp/end2end/mock_test.cc b/test/cpp/end2end/mock_test.cc
index 59a8edf5092a6c269d2df62b199cfc03f46fcc1a..74b40d54d82fa2c4f9bc753f5ef5902fb9e1eeef 100644
--- a/test/cpp/end2end/mock_test.cc
+++ b/test/cpp/end2end/mock_test.cc
@@ -37,12 +37,12 @@
 #include "test/core/util/test_config.h"
 #include "test/cpp/util/echo_duplicate.grpc.pb.h"
 #include "test/cpp/util/echo.grpc.pb.h"
-#include "src/cpp/server/thread_pool.h"
 #include <grpc++/channel_arguments.h>
 #include <grpc++/channel_interface.h>
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
+#include <grpc++/fixed_size_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
@@ -260,7 +260,7 @@ class MockTest : public ::testing::Test {
   std::unique_ptr<Server> server_;
   std::ostringstream server_address_;
   TestServiceImpl service_;
-  ThreadPool thread_pool_;
+  FixedSizeThreadPool thread_pool_;
 };
 
 // Do one real rpc and one mocked one
diff --git a/test/cpp/end2end/server_crash_test.cc b/test/cpp/end2end/server_crash_test.cc
index 4d4d590bdd701a5d012703e3ff8cd0bd811c8d4b..5c7bb4e653171b057a7f2d1e3a9db1725b7d2de4 100644
--- a/test/cpp/end2end/server_crash_test.cc
+++ b/test/cpp/end2end/server_crash_test.cc
@@ -31,13 +31,10 @@
  *
  */
 
-#include <thread>
-
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 #include "test/cpp/util/echo_duplicate.grpc.pb.h"
 #include "test/cpp/util/echo.grpc.pb.h"
-#include "src/cpp/server/thread_pool.h"
 #include <grpc++/channel_arguments.h>
 #include <grpc++/channel_interface.h>
 #include <grpc++/client_context.h>
@@ -84,8 +81,8 @@ class ServiceImpl GRPC_FINAL
       gpr_log(GPR_INFO, "recv msg %s", request.message().c_str());
       response.set_message(request.message());
       stream->Write(response);
-      gpr_sleep_until(
-          gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(1)));
+      gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                   gpr_time_from_seconds(1, GPR_TIMESPAN)));
     }
     return Status::OK;
   }
@@ -99,8 +96,8 @@ class ServiceImpl GRPC_FINAL
       msg << "Hello " << i;
       response.set_message(msg.str());
       if (!writer->Write(response)) break;
-      gpr_sleep_until(
-          gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(1)));
+      gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                   gpr_time_from_seconds(1, GPR_TIMESPAN)));
     }
     return Status::OK;
   }
@@ -147,8 +144,8 @@ class CrashTest : public ::testing::Test {
 TEST_F(CrashTest, ResponseStream) {
   auto server = CreateServerAndClient("response");
 
-  gpr_sleep_until(
-      gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(5)));
+  gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                               gpr_time_from_seconds(5, GPR_TIMESPAN)));
   KillClient();
   server->Shutdown();
   GPR_ASSERT(HadOneResponseStream());
@@ -157,8 +154,8 @@ TEST_F(CrashTest, ResponseStream) {
 TEST_F(CrashTest, BidiStream) {
   auto server = CreateServerAndClient("bidi");
 
-  gpr_sleep_until(
-      gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(5)));
+  gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                               gpr_time_from_seconds(5, GPR_TIMESPAN)));
   KillClient();
   server->Shutdown();
   GPR_ASSERT(HadOneBidiStream());
diff --git a/test/cpp/end2end/thread_stress_test.cc b/test/cpp/end2end/thread_stress_test.cc
index 0b4d94256665989cad2d02fd47fae72ad29c0ab8..e47139641b4307bbf29ec6ff827ffb2cb9ab721e 100644
--- a/test/cpp/end2end/thread_stress_test.cc
+++ b/test/cpp/end2end/thread_stress_test.cc
@@ -38,12 +38,12 @@
 #include "test/core/util/test_config.h"
 #include "test/cpp/util/echo_duplicate.grpc.pb.h"
 #include "test/cpp/util/echo.grpc.pb.h"
-#include "src/cpp/server/thread_pool.h"
 #include <grpc++/channel_arguments.h>
 #include <grpc++/channel_interface.h>
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
+#include <grpc++/fixed_size_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
@@ -71,7 +71,7 @@ namespace {
 void MaybeEchoDeadline(ServerContext* context, const EchoRequest* request,
                        EchoResponse* response) {
   if (request->has_param() && request->param().echo_deadline()) {
-    gpr_timespec deadline = gpr_inf_future;
+    gpr_timespec deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
     if (context->deadline() != system_clock::time_point::max()) {
       Timepoint2Timespec(context->deadline(), &deadline);
     }
@@ -97,14 +97,16 @@ class TestServiceImpl : public ::grpc::cpp::test::util::TestService::Service {
       while (!context->IsCancelled()) {
         gpr_sleep_until(gpr_time_add(
             gpr_now(GPR_CLOCK_REALTIME),
-            gpr_time_from_micros(request->param().client_cancel_after_us())));
+            gpr_time_from_micros(request->param().client_cancel_after_us(),
+                                 GPR_TIMESPAN)));
       }
       return Status::CANCELLED;
     } else if (request->has_param() &&
                request->param().server_cancel_after_us()) {
       gpr_sleep_until(gpr_time_add(
           gpr_now(GPR_CLOCK_REALTIME),
-          gpr_time_from_micros(request->param().server_cancel_after_us())));
+          gpr_time_from_micros(request->param().server_cancel_after_us(),
+                               GPR_TIMESPAN)));
       return Status::CANCELLED;
     } else {
       EXPECT_FALSE(context->IsCancelled());
@@ -206,7 +208,7 @@ class End2endTest : public ::testing::Test {
   const int kMaxMessageSize_;
   TestServiceImpl service_;
   TestServiceImplDupPkg dup_pkg_service_;
-  ThreadPool thread_pool_;
+  FixedSizeThreadPool thread_pool_;
 };
 
 static void SendRpc(grpc::cpp::test::util::TestService::Stub* stub,
diff --git a/test/cpp/interop/client.cc b/test/cpp/interop/client.cc
index 65ce2e9c2a91443ed4289f250db1225d5c7e3211..96149c5e756ce20454330dc460cf54e448b1eab6 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -64,6 +64,7 @@ DEFINE_string(test_case, "large_unary",
               "ping_pong : full-duplex streaming; "
               "cancel_after_begin : cancel stream after starting it; "
               "cancel_after_first_response: cancel on first response; "
+              "timeout_on_sleeping_server: deadline exceeds on stream; "
               "service_account_creds : large_unary with service_account auth; "
               "compute_engine_creds: large_unary with compute engine auth; "
               "jwt_token_creds: large_unary with JWT token auth; "
@@ -101,6 +102,8 @@ int main(int argc, char** argv) {
     client.DoCancelAfterBegin();
   } else if (FLAGS_test_case == "cancel_after_first_response") {
     client.DoCancelAfterFirstResponse();
+  } else if (FLAGS_test_case == "timeout_on_sleeping_server") {
+    client.DoTimeoutOnSleepingServer();
   } else if (FLAGS_test_case == "service_account_creds") {
     grpc::string json_key = GetServiceAccountJsonKey();
     client.DoServiceAccountCreds(json_key, FLAGS_oauth_scope);
@@ -119,6 +122,7 @@ int main(int argc, char** argv) {
     client.DoPingPong();
     client.DoCancelAfterBegin();
     client.DoCancelAfterFirstResponse();
+    client.DoTimeoutOnSleepingServer();
     // service_account_creds and jwt_token_creds can only run with ssl.
     if (FLAGS_enable_ssl) {
       grpc::string json_key = GetServiceAccountJsonKey();
@@ -132,6 +136,7 @@ int main(int argc, char** argv) {
         "Unsupported test case %s. Valid options are all|empty_unary|"
         "large_unary|client_streaming|server_streaming|half_duplex|ping_pong|"
         "cancel_after_begin|cancel_after_first_response|"
+        "timeout_on_sleeping_server|"
         "service_account_creds|compute_engine_creds|jwt_token_creds",
         FLAGS_test_case.c_str());
     ret = 1;
diff --git a/test/cpp/interop/interop_client.cc b/test/cpp/interop/interop_client.cc
index f08f90b13993098d15735682d198f6577bbd3960..d88eff759c8acaa508b2fe08efdf3a6504c1a6ad 100644
--- a/test/cpp/interop/interop_client.cc
+++ b/test/cpp/interop/interop_client.cc
@@ -351,5 +351,26 @@ void InteropClient::DoCancelAfterFirstResponse() {
   gpr_log(GPR_INFO, "Canceling pingpong streaming done.");
 }
 
+void InteropClient::DoTimeoutOnSleepingServer() {
+  gpr_log(GPR_INFO, "Sending Ping Pong streaming rpc with a short deadline...");
+  std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
+
+  ClientContext context;
+  std::chrono::system_clock::time_point deadline =
+      std::chrono::system_clock::now() + std::chrono::milliseconds(1);
+  context.set_deadline(deadline);
+  std::unique_ptr<ClientReaderWriter<StreamingOutputCallRequest,
+                                     StreamingOutputCallResponse>>
+      stream(stub->FullDuplexCall(&context));
+
+  StreamingOutputCallRequest request;
+  request.mutable_payload()->set_body(grpc::string(27182, '\0'));
+  stream->Write(request);
+
+  Status s = stream->Finish();
+  GPR_ASSERT(s.error_code() == StatusCode::DEADLINE_EXCEEDED);
+  gpr_log(GPR_INFO, "Pingpong streaming timeout done.");
+}
+
 }  // namespace testing
 }  // namespace grpc
diff --git a/test/cpp/interop/interop_client.h b/test/cpp/interop/interop_client.h
index d9c895dfd926fc323eaef898aaf4661de84cc6c5..d02e583d94a423798736703e7b7acbf71ce3a813 100644
--- a/test/cpp/interop/interop_client.h
+++ b/test/cpp/interop/interop_client.h
@@ -59,6 +59,7 @@ class InteropClient {
   void DoResponseStreamingWithSlowConsumer();
   void DoCancelAfterBegin();
   void DoCancelAfterFirstResponse();
+  void DoTimeoutOnSleepingServer();
   // Auth tests.
   // username is a string containing the user email
   void DoJwtTokenCreds(const grpc::string& username);
diff --git a/test/cpp/interop/server.cc b/test/cpp/interop/server.cc
index 22b8910a249d8fc39310ee1ce760224fce2cba5b..db87872cf5d5339e43cdfa974083d618e1d98195 100644
--- a/test/cpp/interop/server.cc
+++ b/test/cpp/interop/server.cc
@@ -149,14 +149,12 @@ class TestServiceImpl : public TestService::Service {
     StreamingOutputCallResponse response;
     bool write_success = true;
     while (write_success && stream->Read(&request)) {
-      response.mutable_payload()->set_type(request.payload().type());
-      if (request.response_parameters_size() == 0) {
-        return Status(grpc::StatusCode::INTERNAL,
-                      "Request does not have response parameters.");
+      if (request.response_parameters_size() != 0) {
+        response.mutable_payload()->set_type(request.payload().type());
+        response.mutable_payload()->set_body(
+            grpc::string(request.response_parameters(0).size(), '\0'));
+        write_success = stream->Write(response);
       }
-      response.mutable_payload()->set_body(
-          grpc::string(request.response_parameters(0).size(), '\0'));
-      write_success = stream->Write(response);
     }
     if (write_success) {
       return Status::OK;
diff --git a/test/cpp/interop/server_helper.cc b/test/cpp/interop/server_helper.cc
index c2e750dcf7726270265d5d895a0e30e197e7d8a8..30a78ffddf9ca0f84a0af6cc8c3a72ee4c15f5eb 100644
--- a/test/cpp/interop/server_helper.cc
+++ b/test/cpp/interop/server_helper.cc
@@ -58,5 +58,18 @@ std::shared_ptr<ServerCredentials> CreateInteropServerCredentials() {
   }
 }
 
+InteropContextInspector::InteropContextInspector(
+    const ::grpc::ServerContext& context)
+    : context_(context) {}
+
+std::shared_ptr<const AuthContext> InteropContextInspector::GetAuthContext()
+    const {
+  return context_.auth_context();
+}
+
+bool InteropContextInspector::IsCancelled() const {
+  return context_.IsCancelled();
+}
+
 }  // namespace testing
 }  // namespace grpc
diff --git a/test/cpp/interop/server_helper.h b/test/cpp/interop/server_helper.h
index f98e67bb67341d63ab4287420b5dbb0fdf1598fb..ce977b47058123b93e213cc3d5fbae96ead60fbc 100644
--- a/test/cpp/interop/server_helper.h
+++ b/test/cpp/interop/server_helper.h
@@ -36,6 +36,7 @@
 
 #include <memory>
 
+#include <grpc++/server_context.h>
 #include <grpc++/server_credentials.h>
 
 namespace grpc {
@@ -43,6 +44,18 @@ namespace testing {
 
 std::shared_ptr<ServerCredentials> CreateInteropServerCredentials();
 
+class InteropContextInspector {
+ public:
+  InteropContextInspector(const ::grpc::ServerContext& context);
+
+  // Inspector methods, able to peek inside ServerContext, follow.
+  std::shared_ptr<const AuthContext> GetAuthContext() const;
+  bool IsCancelled() const;
+
+ private:
+  const ::grpc::ServerContext& context_;
+};
+
 }  // namespace testing
 }  // namespace grpc
 
diff --git a/test/cpp/qps/driver.cc b/test/cpp/qps/driver.cc
index 5597bcd5499f846830c7ec71a03db1c1f556d562..a0360295e09006895a68ef133c6dc94243b563d4 100644
--- a/test/cpp/qps/driver.cc
+++ b/test/cpp/qps/driver.cc
@@ -186,7 +186,8 @@ std::unique_ptr<ScenarioResult> RunScenario(
   // Let everything warmup
   gpr_log(GPR_INFO, "Warming up");
   gpr_timespec start = gpr_now(GPR_CLOCK_REALTIME);
-  gpr_sleep_until(gpr_time_add(start, gpr_time_from_seconds(warmup_seconds)));
+  gpr_sleep_until(
+      gpr_time_add(start, gpr_time_from_seconds(warmup_seconds, GPR_TIMESPAN)));
 
   // Start a run
   gpr_log(GPR_INFO, "Starting");
@@ -211,8 +212,8 @@ std::unique_ptr<ScenarioResult> RunScenario(
 
   // Wait some time
   gpr_log(GPR_INFO, "Running");
-  gpr_sleep_until(
-      gpr_time_add(start, gpr_time_from_seconds(benchmark_seconds)));
+  gpr_sleep_until(gpr_time_add(
+      start, gpr_time_from_seconds(benchmark_seconds, GPR_TIMESPAN)));
 
   // Finish a run
   std::unique_ptr<ScenarioResult> result(new ScenarioResult);
diff --git a/test/cpp/qps/server_async.cc b/test/cpp/qps/server_async.cc
index f5251e961b9323916f6021cb50a43b1fe41a980d..be23204608014b9794ccc1c866a831ecaae20a19 100644
--- a/test/cpp/qps/server_async.cc
+++ b/test/cpp/qps/server_async.cc
@@ -45,6 +45,7 @@
 #include <grpc/support/host_port.h>
 #include <grpc++/async_unary_call.h>
 #include <grpc++/config.h>
+#include <grpc++/fixed_size_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
@@ -52,7 +53,6 @@
 #include <grpc++/status.h>
 #include <grpc++/stream.h>
 #include <gtest/gtest.h>
-#include "src/cpp/server/thread_pool.h"
 #include "test/cpp/qps/qpstest.grpc.pb.h"
 #include "test/cpp/qps/server.h"
 
diff --git a/test/cpp/qps/server_sync.cc b/test/cpp/qps/server_sync.cc
index bc00de9cedb77220c8963dcae57596326908cffb..d90ff2212bc109d8957c5bf9b2e20070971b5909 100644
--- a/test/cpp/qps/server_sync.cc
+++ b/test/cpp/qps/server_sync.cc
@@ -40,13 +40,13 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
 #include <grpc++/config.h>
+#include <grpc++/fixed_size_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
 #include <grpc++/server_credentials.h>
 #include <grpc++/status.h>
 #include <grpc++/stream.h>
-#include "src/cpp/server/thread_pool.h"
 #include "test/cpp/qps/qpstest.grpc.pb.h"
 #include "test/cpp/qps/server.h"
 #include "test/cpp/qps/timer.h"
@@ -111,7 +111,7 @@ class SynchronousServer GRPC_FINAL : public grpc::testing::Server {
   }
 
   TestServiceImpl service_;
-  ThreadPool thread_pool_;
+  FixedSizeThreadPool thread_pool_;
   std::unique_ptr<grpc::Server> impl_;
 };
 
diff --git a/test/cpp/qps/worker.cc b/test/cpp/qps/worker.cc
index 2bc0a5697099cca35eac811bf6a10c3d34b62aa8..7cf4903148af164d47fcdb2676a0114b6c79dd82 100644
--- a/test/cpp/qps/worker.cc
+++ b/test/cpp/qps/worker.cc
@@ -57,8 +57,8 @@ static void RunServer() {
   QpsWorker worker(FLAGS_driver_port, FLAGS_server_port);
 
   while (!got_sigint) {
-    gpr_sleep_until(
-        gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(5)));
+    gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                                 gpr_time_from_seconds(5, GPR_TIMESPAN)));
   }
 }
 
diff --git a/test/cpp/server/thread_pool_test.cc b/test/cpp/server/fixed_size_thread_pool_test.cc
similarity index 89%
rename from test/cpp/server/thread_pool_test.cc
rename to test/cpp/server/fixed_size_thread_pool_test.cc
index 824d78531607bf8b422b094e129955a329a704f3..442e974fc154d4a824aa37dd02ef3131b27a4912 100644
--- a/test/cpp/server/thread_pool_test.cc
+++ b/test/cpp/server/fixed_size_thread_pool_test.cc
@@ -35,17 +35,17 @@
 #include <functional>
 #include <mutex>
 
-#include "src/cpp/server/thread_pool.h"
+#include <grpc++/fixed_size_thread_pool.h>
 #include <gtest/gtest.h>
 
 namespace grpc {
 
-class ThreadPoolTest : public ::testing::Test {
+class FixedSizeThreadPoolTest : public ::testing::Test {
  public:
-  ThreadPoolTest() : thread_pool_(4) {}
+  FixedSizeThreadPoolTest() : thread_pool_(4) {}
 
  protected:
-  ThreadPool thread_pool_;
+  FixedSizeThreadPool thread_pool_;
 };
 
 void Callback(std::mutex* mu, std::condition_variable* cv, bool* done) {
@@ -54,12 +54,12 @@ void Callback(std::mutex* mu, std::condition_variable* cv, bool* done) {
   cv->notify_all();
 }
 
-TEST_F(ThreadPoolTest, ScheduleCallback) {
+TEST_F(FixedSizeThreadPoolTest, Add) {
   std::mutex mu;
   std::condition_variable cv;
   bool done = false;
   std::function<void()> callback = std::bind(Callback, &mu, &cv, &done);
-  thread_pool_.ScheduleCallback(callback);
+  thread_pool_.Add(callback);
 
   // Wait for the callback to finish.
   std::unique_lock<std::mutex> lock(mu);
diff --git a/test/cpp/util/cli_call_test.cc b/test/cpp/util/cli_call_test.cc
index 6cf86ea89bf5eb70703eb42997878b8b052564d3..00bb821ae67ef5c0100ea341b810e792ddc0e1be 100644
--- a/test/cpp/util/cli_call_test.cc
+++ b/test/cpp/util/cli_call_test.cc
@@ -34,12 +34,12 @@
 #include "test/core/util/test_config.h"
 #include "test/cpp/util/cli_call.h"
 #include "test/cpp/util/echo.grpc.pb.h"
-#include "src/cpp/server/thread_pool.h"
 #include <grpc++/channel_arguments.h>
 #include <grpc++/channel_interface.h>
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
+#include <grpc++/fixed_size_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
@@ -102,7 +102,7 @@ class CliCallTest : public ::testing::Test {
   std::unique_ptr<Server> server_;
   std::ostringstream server_address_;
   TestServiceImpl service_;
-  ThreadPool thread_pool_;
+  FixedSizeThreadPool thread_pool_;
 };
 
 // Send a rpc with a normal stub and then a CliCall. Verify they match.
diff --git a/test/cpp/util/time_test.cc b/test/cpp/util/time_test.cc
index a3cfb1c961c56b5d1fc6d99e43f56b98e5ba5dc3..4cb6ec4b4e9f4ecbb766954370eff1d378b6b418 100644
--- a/test/cpp/util/time_test.cc
+++ b/test/cpp/util/time_test.cc
@@ -46,7 +46,8 @@ class TimeTest : public ::testing::Test {};
 
 TEST_F(TimeTest, AbsolutePointTest) {
   long us = 10000000L;
-  gpr_timespec ts = gpr_time_from_micros(us);
+  gpr_timespec ts = gpr_time_from_micros(us, GPR_TIMESPAN);
+  ts.clock_type = GPR_CLOCK_REALTIME;
   system_clock::time_point tp{microseconds(us)};
   system_clock::time_point tp_converted = Timespec2Timepoint(ts);
   gpr_timespec ts_converted;
@@ -61,15 +62,17 @@ TEST_F(TimeTest, AbsolutePointTest) {
 // gpr_inf_future is treated specially and mapped to/from time_point::max()
 TEST_F(TimeTest, InfFuture) {
   EXPECT_EQ(system_clock::time_point::max(),
-            Timespec2Timepoint(gpr_inf_future));
+            Timespec2Timepoint(gpr_inf_future(GPR_CLOCK_REALTIME)));
   gpr_timespec from_time_point_max;
   Timepoint2Timespec(system_clock::time_point::max(), &from_time_point_max);
-  EXPECT_EQ(0, gpr_time_cmp(gpr_inf_future, from_time_point_max));
+  EXPECT_EQ(
+      0, gpr_time_cmp(gpr_inf_future(GPR_CLOCK_REALTIME), from_time_point_max));
   // This will cause an overflow
   Timepoint2Timespec(
       std::chrono::time_point<system_clock, std::chrono::seconds>::max(),
       &from_time_point_max);
-  EXPECT_EQ(0, gpr_time_cmp(gpr_inf_future, from_time_point_max));
+  EXPECT_EQ(
+      0, gpr_time_cmp(gpr_inf_future(GPR_CLOCK_REALTIME), from_time_point_max));
 }
 
 }  // namespace
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index feb7ad8bb93bfd6ab171ed5d10ea4ef843c0511c..4bdd8babde52fde2aeb2c8ca6ae470919416d151 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -763,6 +763,7 @@ WARN_LOGFILE           =
 INPUT                  = include/grpc++/async_generic_service.h \
 include/grpc++/async_unary_call.h \
 include/grpc++/auth_context.h \
+include/grpc++/auth_property_iterator.h \
 include/grpc++/byte_buffer.h \
 include/grpc++/channel_arguments.h \
 include/grpc++/channel_interface.h \
@@ -772,6 +773,7 @@ include/grpc++/config.h \
 include/grpc++/config_protobuf.h \
 include/grpc++/create_channel.h \
 include/grpc++/credentials.h \
+include/grpc++/fixed_size_thread_pool.h \
 include/grpc++/generic_stub.h \
 include/grpc++/impl/call.h \
 include/grpc++/impl/client_unary_call.h \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 67718d8976f10b03791875274ff579a6d2ccb51e..1c73ca6294727e680439539b0af078da4557e9a4 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -763,6 +763,7 @@ WARN_LOGFILE           =
 INPUT                  = include/grpc++/async_generic_service.h \
 include/grpc++/async_unary_call.h \
 include/grpc++/auth_context.h \
+include/grpc++/auth_property_iterator.h \
 include/grpc++/byte_buffer.h \
 include/grpc++/channel_arguments.h \
 include/grpc++/channel_interface.h \
@@ -772,6 +773,7 @@ include/grpc++/config.h \
 include/grpc++/config_protobuf.h \
 include/grpc++/create_channel.h \
 include/grpc++/credentials.h \
+include/grpc++/fixed_size_thread_pool.h \
 include/grpc++/generic_stub.h \
 include/grpc++/impl/call.h \
 include/grpc++/impl/client_unary_call.h \
@@ -803,9 +805,9 @@ src/cpp/common/secure_auth_context.h \
 src/cpp/server/secure_server_credentials.h \
 src/cpp/client/channel.h \
 src/cpp/common/create_auth_context.h \
-src/cpp/server/thread_pool.h \
 src/cpp/client/secure_channel_arguments.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_create_auth_context.cc \
 src/cpp/server/secure_server_credentials.cc \
@@ -823,12 +825,12 @@ src/cpp/common/rpc_method.cc \
 src/cpp/proto/proto_utils.cc \
 src/cpp/server/async_generic_service.cc \
 src/cpp/server/create_default_thread_pool.cc \
+src/cpp/server/fixed_size_thread_pool.cc \
 src/cpp/server/insecure_server_credentials.cc \
 src/cpp/server/server.cc \
 src/cpp/server/server_builder.cc \
 src/cpp/server/server_context.cc \
 src/cpp/server/server_credentials.cc \
-src/cpp/server/thread_pool.cc \
 src/cpp/util/byte_buffer.cc \
 src/cpp/util/slice.cc \
 src/cpp/util/status.cc \
diff --git a/tools/jenkins/docker_run_jenkins.sh b/tools/jenkins/docker_run_jenkins.sh
index 90107169baad522ea2c1be05caf90963c9454e2c..eb6c9144c6318fb12c0bc5605b97c7467c9a37f0 100755
--- a/tools/jenkins/docker_run_jenkins.sh
+++ b/tools/jenkins/docker_run_jenkins.sh
@@ -42,4 +42,4 @@ cd /var/local/git/grpc
 nvm use 0.12
 rvm use ruby-2.1
 tools/run_tests/prepare_travis.sh
-tools/run_tests/run_tests.py -t -c $config -l $language -x report.xml
+$arch tools/run_tests/run_tests.py -t -c $config -l $language -x report.xml
diff --git a/tools/jenkins/run_linuxbrew.sh b/tools/jenkins/run_distribution.sh
similarity index 100%
rename from tools/jenkins/run_linuxbrew.sh
rename to tools/jenkins/run_distribution.sh
diff --git a/tools/jenkins/run_jenkins.sh b/tools/jenkins/run_jenkins.sh
index af49ea0bd0311e965d347aad27a18771ef35c5c2..8cb85cb12b31ddf179342464bbcb46783b81d684 100755
--- a/tools/jenkins/run_jenkins.sh
+++ b/tools/jenkins/run_jenkins.sh
@@ -31,12 +31,24 @@
 # This script is invoked by Jenkins and triggers a test run based on
 # env variable settings.
 #
+# Setting up rvm environment BEFORE we set -ex.
+[[ -s /etc/profile.d/rvm.sh ]] && . /etc/profile.d/rvm.sh
 # To prevent cygwin bash complaining about empty lines ending with \r
 # we set the igncr option. The option doesn't exist on Linux, so we fallback
 # to just 'set -ex' there.
 # NOTE: No empty lines should appear in this file before igncr is set!
 set -ex -o igncr || set -ex
 
+# Grabbing the machine's architecture
+arch=`uname -m`
+
+case $platform in
+  i386)
+    arch="i386"
+    platform="linux"
+    ;;
+esac
+
 if [ "$platform" == "linux" ]
 then
   echo "building $language on Linux"
@@ -61,6 +73,7 @@ then
   docker run \
     -e "config=$config" \
     -e "language=$language" \
+    -e "arch=$arch" \
     -i \
     -v "$git_root:/var/local/jenkins/grpc" \
     --cidfile=docker.cid \
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 8daee3c380fdb30f419ed7fbf31300c8a048a010..0e2ef78ad3ea9ce026a783893f6a7f535a830a89 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -929,20 +929,6 @@
       "test/core/iomgr/time_averaged_stats_test.c"
     ]
   }, 
-  {
-    "deps": [
-      "gpr", 
-      "gpr_test_util", 
-      "grpc", 
-      "grpc_test_util"
-    ], 
-    "headers": [], 
-    "language": "c", 
-    "name": "time_test", 
-    "src": [
-      "test/core/support/time_test.c"
-    ]
-  }, 
   {
     "deps": [
       "gpr", 
@@ -1063,6 +1049,19 @@
       "test/cpp/qps/async_unary_ping_pong_test.cc"
     ]
   }, 
+  {
+    "deps": [
+      "gpr", 
+      "grpc", 
+      "grpc++"
+    ], 
+    "headers": [], 
+    "language": "c++", 
+    "name": "auth_property_iterator_test", 
+    "src": [
+      "test/cpp/common/auth_property_iterator_test.cc"
+    ]
+  }, 
   {
     "deps": [
       "gpr", 
@@ -1198,6 +1197,21 @@
       "test/cpp/end2end/end2end_test.cc"
     ]
   }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc++", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c++", 
+    "name": "fixed_size_thread_pool_test", 
+    "src": [
+      "test/cpp/server/fixed_size_thread_pool_test.cc"
+    ]
+  }, 
   {
     "deps": [
       "gpr", 
@@ -1589,21 +1603,6 @@
       "test/cpp/qps/sync_unary_ping_pong_test.cc"
     ]
   }, 
-  {
-    "deps": [
-      "gpr", 
-      "gpr_test_util", 
-      "grpc", 
-      "grpc++", 
-      "grpc_test_util"
-    ], 
-    "headers": [], 
-    "language": "c++", 
-    "name": "thread_pool_test", 
-    "src": [
-      "test/cpp/server/thread_pool_test.cc"
-    ]
-  }, 
   {
     "deps": [
       "gpr", 
@@ -9506,6 +9505,7 @@
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
       "include/grpc++/auth_context.h", 
+      "include/grpc++/auth_property_iterator.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -9515,6 +9515,7 @@
       "include/grpc++/config_protobuf.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/credentials.h", 
+      "include/grpc++/fixed_size_thread_pool.h", 
       "include/grpc++/generic_stub.h", 
       "include/grpc++/impl/call.h", 
       "include/grpc++/impl/client_unary_call.h", 
@@ -9545,8 +9546,7 @@
       "src/cpp/client/secure_credentials.h", 
       "src/cpp/common/create_auth_context.h", 
       "src/cpp/common/secure_auth_context.h", 
-      "src/cpp/server/secure_server_credentials.h", 
-      "src/cpp/server/thread_pool.h"
+      "src/cpp/server/secure_server_credentials.h"
     ], 
     "language": "c++", 
     "name": "grpc++", 
@@ -9554,6 +9554,7 @@
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
       "include/grpc++/auth_context.h", 
+      "include/grpc++/auth_property_iterator.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -9563,6 +9564,7 @@
       "include/grpc++/config_protobuf.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/credentials.h", 
+      "include/grpc++/fixed_size_thread_pool.h", 
       "include/grpc++/generic_stub.h", 
       "include/grpc++/impl/call.h", 
       "include/grpc++/impl/client_unary_call.h", 
@@ -9601,6 +9603,7 @@
       "src/cpp/client/secure_channel_arguments.cc", 
       "src/cpp/client/secure_credentials.cc", 
       "src/cpp/client/secure_credentials.h", 
+      "src/cpp/common/auth_property_iterator.cc", 
       "src/cpp/common/call.cc", 
       "src/cpp/common/completion_queue.cc", 
       "src/cpp/common/create_auth_context.h", 
@@ -9611,6 +9614,7 @@
       "src/cpp/proto/proto_utils.cc", 
       "src/cpp/server/async_generic_service.cc", 
       "src/cpp/server/create_default_thread_pool.cc", 
+      "src/cpp/server/fixed_size_thread_pool.cc", 
       "src/cpp/server/insecure_server_credentials.cc", 
       "src/cpp/server/secure_server_credentials.cc", 
       "src/cpp/server/secure_server_credentials.h", 
@@ -9618,8 +9622,6 @@
       "src/cpp/server/server_builder.cc", 
       "src/cpp/server/server_context.cc", 
       "src/cpp/server/server_credentials.cc", 
-      "src/cpp/server/thread_pool.cc", 
-      "src/cpp/server/thread_pool.h", 
       "src/cpp/util/byte_buffer.cc", 
       "src/cpp/util/slice.cc", 
       "src/cpp/util/status.cc", 
@@ -9677,6 +9679,7 @@
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
       "include/grpc++/auth_context.h", 
+      "include/grpc++/auth_property_iterator.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -9686,6 +9689,7 @@
       "include/grpc++/config_protobuf.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/credentials.h", 
+      "include/grpc++/fixed_size_thread_pool.h", 
       "include/grpc++/generic_stub.h", 
       "include/grpc++/impl/call.h", 
       "include/grpc++/impl/client_unary_call.h", 
@@ -9713,8 +9717,7 @@
       "include/grpc++/thread_pool_interface.h", 
       "include/grpc++/time.h", 
       "src/cpp/client/channel.h", 
-      "src/cpp/common/create_auth_context.h", 
-      "src/cpp/server/thread_pool.h"
+      "src/cpp/common/create_auth_context.h"
     ], 
     "language": "c++", 
     "name": "grpc++_unsecure", 
@@ -9722,6 +9725,7 @@
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
       "include/grpc++/auth_context.h", 
+      "include/grpc++/auth_property_iterator.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -9731,6 +9735,7 @@
       "include/grpc++/config_protobuf.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/credentials.h", 
+      "include/grpc++/fixed_size_thread_pool.h", 
       "include/grpc++/generic_stub.h", 
       "include/grpc++/impl/call.h", 
       "include/grpc++/impl/client_unary_call.h", 
@@ -9774,13 +9779,12 @@
       "src/cpp/proto/proto_utils.cc", 
       "src/cpp/server/async_generic_service.cc", 
       "src/cpp/server/create_default_thread_pool.cc", 
+      "src/cpp/server/fixed_size_thread_pool.cc", 
       "src/cpp/server/insecure_server_credentials.cc", 
       "src/cpp/server/server.cc", 
       "src/cpp/server/server_builder.cc", 
       "src/cpp/server/server_context.cc", 
       "src/cpp/server/server_credentials.cc", 
-      "src/cpp/server/thread_pool.cc", 
-      "src/cpp/server/thread_pool.h", 
       "src/cpp/util/byte_buffer.cc", 
       "src/cpp/util/slice.cc", 
       "src/cpp/util/status.cc", 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index 3a22ba9180d35609242ccfd566e1fd25b51e6522..00ff55f3445424087f56537f5967ca89df5ac23b 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -531,15 +531,6 @@
       "posix"
     ]
   }, 
-  {
-    "flaky": false, 
-    "language": "c", 
-    "name": "time_test", 
-    "platforms": [
-      "windows", 
-      "posix"
-    ]
-  }, 
   {
     "flaky": false, 
     "language": "c", 
@@ -612,6 +603,15 @@
       "posix"
     ]
   }, 
+  {
+    "flaky": false, 
+    "language": "c++", 
+    "name": "auth_property_iterator_test", 
+    "platforms": [
+      "windows", 
+      "posix"
+    ]
+  }, 
   {
     "flaky": false, 
     "language": "c++", 
@@ -684,6 +684,15 @@
       "posix"
     ]
   }, 
+  {
+    "flaky": false, 
+    "language": "c++", 
+    "name": "fixed_size_thread_pool_test", 
+    "platforms": [
+      "windows", 
+      "posix"
+    ]
+  }, 
   {
     "flaky": false, 
     "language": "c++", 
@@ -774,15 +783,6 @@
       "posix"
     ]
   }, 
-  {
-    "flaky": false, 
-    "language": "c++", 
-    "name": "thread_pool_test", 
-    "platforms": [
-      "windows", 
-      "posix"
-    ]
-  }, 
   {
     "flaky": false, 
     "language": "c++", 
diff --git a/vsprojects/Grpc.mak b/vsprojects/Grpc.mak
index 1e35a0b108256e04055c7366da39f73e5a2aa95d..a637871c72ee2a7b1ea643f199aa647b559f0f3c 100644
--- a/vsprojects/Grpc.mak
+++ b/vsprojects/Grpc.mak
@@ -63,7 +63,7 @@ $(OUT_DIR):
 build_libs: build_gpr build_gpr_test_util build_grpc build_grpc_test_util build_grpc_test_util_unsecure build_grpc_unsecure Debug\end2end_fixture_chttp2_fake_security.lib Debug\end2end_fixture_chttp2_fullstack.lib Debug\end2end_fixture_chttp2_simple_ssl_fullstack.lib Debug\end2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.lib Debug\end2end_fixture_chttp2_socket_pair.lib Debug\end2end_fixture_chttp2_socket_pair_one_byte_at_a_time.lib Debug\end2end_fixture_chttp2_socket_pair_with_grpc_trace.lib Debug\end2end_test_bad_hostname.lib Debug\end2end_test_cancel_after_accept.lib Debug\end2end_test_cancel_after_accept_and_writes_closed.lib Debug\end2end_test_cancel_after_invoke.lib Debug\end2end_test_cancel_before_invoke.lib Debug\end2end_test_cancel_in_a_vacuum.lib Debug\end2end_test_census_simple_request.lib Debug\end2end_test_disappearing_server.lib Debug\end2end_test_early_server_shutdown_finishes_inflight_calls.lib Debug\end2end_test_early_server_shutdown_finishes_tags.lib Debug\end2end_test_empty_batch.lib Debug\end2end_test_graceful_server_shutdown.lib Debug\end2end_test_invoke_large_request.lib Debug\end2end_test_max_concurrent_streams.lib Debug\end2end_test_max_message_length.lib Debug\end2end_test_no_op.lib Debug\end2end_test_ping_pong_streaming.lib Debug\end2end_test_registered_call.lib Debug\end2end_test_request_response_with_binary_metadata_and_payload.lib Debug\end2end_test_request_response_with_metadata_and_payload.lib Debug\end2end_test_request_response_with_payload.lib Debug\end2end_test_request_response_with_payload_and_call_creds.lib Debug\end2end_test_request_response_with_trailing_metadata_and_payload.lib Debug\end2end_test_request_with_flags.lib Debug\end2end_test_request_with_large_metadata.lib Debug\end2end_test_request_with_payload.lib Debug\end2end_test_server_finishes_request.lib Debug\end2end_test_simple_delayed_request.lib Debug\end2end_test_simple_request.lib Debug\end2end_test_simple_request_with_high_initial_sequence_number.lib Debug\end2end_certs.lib Debug\bad_client_test.lib 
 buildtests: buildtests_c buildtests_cxx
 
-buildtests_c: alarm_heap_test.exe alarm_list_test.exe alarm_test.exe alpn_test.exe bin_encoder_test.exe chttp2_status_conversion_test.exe chttp2_stream_encoder_test.exe chttp2_stream_map_test.exe fling_client.exe fling_server.exe gpr_cancellable_test.exe gpr_cmdline_test.exe gpr_env_test.exe gpr_file_test.exe gpr_histogram_test.exe gpr_host_port_test.exe gpr_log_test.exe gpr_slice_buffer_test.exe gpr_slice_test.exe gpr_stack_lockfree_test.exe gpr_string_test.exe gpr_sync_test.exe gpr_thd_test.exe gpr_time_test.exe gpr_tls_test.exe gpr_useful_test.exe grpc_auth_context_test.exe grpc_base64_test.exe grpc_byte_buffer_reader_test.exe grpc_channel_stack_test.exe grpc_completion_queue_test.exe grpc_credentials_test.exe grpc_json_token_test.exe grpc_jwt_verifier_test.exe grpc_security_connector_test.exe grpc_stream_op_test.exe hpack_parser_test.exe hpack_table_test.exe httpcli_format_request_test.exe httpcli_parser_test.exe json_rewrite.exe json_rewrite_test.exe json_test.exe lame_client_test.exe message_compress_test.exe multi_init_test.exe multiple_server_queues_test.exe murmur_hash_test.exe no_server_test.exe resolve_address_test.exe secure_endpoint_test.exe sockaddr_utils_test.exe time_averaged_stats_test.exe time_test.exe timeout_encoding_test.exe timers_test.exe transport_metadata_test.exe transport_security_test.exe uri_parser_test.exe chttp2_fake_security_bad_hostname_test.exe chttp2_fake_security_cancel_after_accept_test.exe chttp2_fake_security_cancel_after_accept_and_writes_closed_test.exe chttp2_fake_security_cancel_after_invoke_test.exe chttp2_fake_security_cancel_before_invoke_test.exe chttp2_fake_security_cancel_in_a_vacuum_test.exe chttp2_fake_security_census_simple_request_test.exe chttp2_fake_security_disappearing_server_test.exe chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fake_security_early_server_shutdown_finishes_tags_test.exe chttp2_fake_security_empty_batch_test.exe chttp2_fake_security_graceful_server_shutdown_test.exe chttp2_fake_security_invoke_large_request_test.exe chttp2_fake_security_max_concurrent_streams_test.exe chttp2_fake_security_max_message_length_test.exe chttp2_fake_security_no_op_test.exe chttp2_fake_security_ping_pong_streaming_test.exe chttp2_fake_security_registered_call_test.exe chttp2_fake_security_request_response_with_binary_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_payload_test.exe chttp2_fake_security_request_response_with_payload_and_call_creds_test.exe chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fake_security_request_with_flags_test.exe chttp2_fake_security_request_with_large_metadata_test.exe chttp2_fake_security_request_with_payload_test.exe chttp2_fake_security_server_finishes_request_test.exe chttp2_fake_security_simple_delayed_request_test.exe chttp2_fake_security_simple_request_test.exe chttp2_fake_security_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_test.exe chttp2_fullstack_cancel_after_accept_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_fullstack_cancel_after_invoke_test.exe chttp2_fullstack_cancel_before_invoke_test.exe chttp2_fullstack_cancel_in_a_vacuum_test.exe chttp2_fullstack_census_simple_request_test.exe chttp2_fullstack_disappearing_server_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_fullstack_empty_batch_test.exe chttp2_fullstack_graceful_server_shutdown_test.exe chttp2_fullstack_invoke_large_request_test.exe chttp2_fullstack_max_concurrent_streams_test.exe chttp2_fullstack_max_message_length_test.exe chttp2_fullstack_no_op_test.exe chttp2_fullstack_ping_pong_streaming_test.exe chttp2_fullstack_registered_call_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_payload_test.exe chttp2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fullstack_request_with_flags_test.exe chttp2_fullstack_request_with_large_metadata_test.exe chttp2_fullstack_request_with_payload_test.exe chttp2_fullstack_server_finishes_request_test.exe chttp2_fullstack_simple_delayed_request_test.exe chttp2_fullstack_simple_request_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_fullstack_bad_hostname_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_fullstack_census_simple_request_test.exe chttp2_simple_ssl_fullstack_disappearing_server_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_fullstack_empty_batch_test.exe chttp2_simple_ssl_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_fullstack_max_message_length_test.exe chttp2_simple_ssl_fullstack_no_op_test.exe chttp2_simple_ssl_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_fullstack_registered_call_test.exe chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_with_flags_test.exe chttp2_simple_ssl_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_fullstack_request_with_payload_test.exe chttp2_simple_ssl_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_fullstack_simple_request_test.exe chttp2_simple_ssl_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_with_oauth2_fullstack_bad_hostname_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test.exe chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_message_length_test.exe chttp2_simple_ssl_with_oauth2_fullstack_no_op_test.exe chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_with_oauth2_fullstack_registered_call_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_flags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_bad_hostname_test.exe chttp2_socket_pair_cancel_after_accept_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_cancel_after_invoke_test.exe chttp2_socket_pair_cancel_before_invoke_test.exe chttp2_socket_pair_cancel_in_a_vacuum_test.exe chttp2_socket_pair_census_simple_request_test.exe chttp2_socket_pair_disappearing_server_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_empty_batch_test.exe chttp2_socket_pair_graceful_server_shutdown_test.exe chttp2_socket_pair_invoke_large_request_test.exe chttp2_socket_pair_max_concurrent_streams_test.exe chttp2_socket_pair_max_message_length_test.exe chttp2_socket_pair_no_op_test.exe chttp2_socket_pair_ping_pong_streaming_test.exe chttp2_socket_pair_registered_call_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_payload_test.exe chttp2_socket_pair_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_request_with_flags_test.exe chttp2_socket_pair_request_with_large_metadata_test.exe chttp2_socket_pair_request_with_payload_test.exe chttp2_socket_pair_server_finishes_request_test.exe chttp2_socket_pair_simple_delayed_request_test.exe chttp2_socket_pair_simple_request_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_disappearing_server_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_disappearing_server_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_test.exe chttp2_socket_pair_with_grpc_trace_no_op_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_delayed_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_unsecure_test.exe chttp2_fullstack_cancel_after_accept_unsecure_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_fullstack_cancel_after_invoke_unsecure_test.exe chttp2_fullstack_cancel_before_invoke_unsecure_test.exe chttp2_fullstack_cancel_in_a_vacuum_unsecure_test.exe chttp2_fullstack_census_simple_request_unsecure_test.exe chttp2_fullstack_disappearing_server_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_fullstack_empty_batch_unsecure_test.exe chttp2_fullstack_graceful_server_shutdown_unsecure_test.exe chttp2_fullstack_invoke_large_request_unsecure_test.exe chttp2_fullstack_max_concurrent_streams_unsecure_test.exe chttp2_fullstack_max_message_length_unsecure_test.exe chttp2_fullstack_no_op_unsecure_test.exe chttp2_fullstack_ping_pong_streaming_unsecure_test.exe chttp2_fullstack_registered_call_unsecure_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_payload_unsecure_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_with_flags_unsecure_test.exe chttp2_fullstack_request_with_large_metadata_unsecure_test.exe chttp2_fullstack_request_with_payload_unsecure_test.exe chttp2_fullstack_server_finishes_request_unsecure_test.exe chttp2_fullstack_simple_delayed_request_unsecure_test.exe chttp2_fullstack_simple_request_unsecure_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_bad_hostname_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_census_simple_request_unsecure_test.exe chttp2_socket_pair_disappearing_server_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_empty_batch_unsecure_test.exe chttp2_socket_pair_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_invoke_large_request_unsecure_test.exe chttp2_socket_pair_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_max_message_length_unsecure_test.exe chttp2_socket_pair_no_op_unsecure_test.exe chttp2_socket_pair_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_registered_call_unsecure_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_with_flags_unsecure_test.exe chttp2_socket_pair_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_request_with_payload_unsecure_test.exe chttp2_socket_pair_server_finishes_request_unsecure_test.exe chttp2_socket_pair_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_simple_request_unsecure_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_disappearing_server_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_disappearing_server_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_no_op_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test.exe connection_prefix_bad_client_test.exe initial_settings_frame_bad_client_test.exe 
+buildtests_c: alarm_heap_test.exe alarm_list_test.exe alarm_test.exe alpn_test.exe bin_encoder_test.exe chttp2_status_conversion_test.exe chttp2_stream_encoder_test.exe chttp2_stream_map_test.exe fling_client.exe fling_server.exe gpr_cancellable_test.exe gpr_cmdline_test.exe gpr_env_test.exe gpr_file_test.exe gpr_histogram_test.exe gpr_host_port_test.exe gpr_log_test.exe gpr_slice_buffer_test.exe gpr_slice_test.exe gpr_stack_lockfree_test.exe gpr_string_test.exe gpr_sync_test.exe gpr_thd_test.exe gpr_time_test.exe gpr_tls_test.exe gpr_useful_test.exe grpc_auth_context_test.exe grpc_base64_test.exe grpc_byte_buffer_reader_test.exe grpc_channel_stack_test.exe grpc_completion_queue_test.exe grpc_credentials_test.exe grpc_json_token_test.exe grpc_jwt_verifier_test.exe grpc_security_connector_test.exe grpc_stream_op_test.exe hpack_parser_test.exe hpack_table_test.exe httpcli_format_request_test.exe httpcli_parser_test.exe json_rewrite.exe json_rewrite_test.exe json_test.exe lame_client_test.exe message_compress_test.exe multi_init_test.exe multiple_server_queues_test.exe murmur_hash_test.exe no_server_test.exe resolve_address_test.exe secure_endpoint_test.exe sockaddr_utils_test.exe time_averaged_stats_test.exe timeout_encoding_test.exe timers_test.exe transport_metadata_test.exe transport_security_test.exe uri_parser_test.exe chttp2_fake_security_bad_hostname_test.exe chttp2_fake_security_cancel_after_accept_test.exe chttp2_fake_security_cancel_after_accept_and_writes_closed_test.exe chttp2_fake_security_cancel_after_invoke_test.exe chttp2_fake_security_cancel_before_invoke_test.exe chttp2_fake_security_cancel_in_a_vacuum_test.exe chttp2_fake_security_census_simple_request_test.exe chttp2_fake_security_disappearing_server_test.exe chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fake_security_early_server_shutdown_finishes_tags_test.exe chttp2_fake_security_empty_batch_test.exe chttp2_fake_security_graceful_server_shutdown_test.exe chttp2_fake_security_invoke_large_request_test.exe chttp2_fake_security_max_concurrent_streams_test.exe chttp2_fake_security_max_message_length_test.exe chttp2_fake_security_no_op_test.exe chttp2_fake_security_ping_pong_streaming_test.exe chttp2_fake_security_registered_call_test.exe chttp2_fake_security_request_response_with_binary_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_payload_test.exe chttp2_fake_security_request_response_with_payload_and_call_creds_test.exe chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fake_security_request_with_flags_test.exe chttp2_fake_security_request_with_large_metadata_test.exe chttp2_fake_security_request_with_payload_test.exe chttp2_fake_security_server_finishes_request_test.exe chttp2_fake_security_simple_delayed_request_test.exe chttp2_fake_security_simple_request_test.exe chttp2_fake_security_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_test.exe chttp2_fullstack_cancel_after_accept_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_fullstack_cancel_after_invoke_test.exe chttp2_fullstack_cancel_before_invoke_test.exe chttp2_fullstack_cancel_in_a_vacuum_test.exe chttp2_fullstack_census_simple_request_test.exe chttp2_fullstack_disappearing_server_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_fullstack_empty_batch_test.exe chttp2_fullstack_graceful_server_shutdown_test.exe chttp2_fullstack_invoke_large_request_test.exe chttp2_fullstack_max_concurrent_streams_test.exe chttp2_fullstack_max_message_length_test.exe chttp2_fullstack_no_op_test.exe chttp2_fullstack_ping_pong_streaming_test.exe chttp2_fullstack_registered_call_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_payload_test.exe chttp2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fullstack_request_with_flags_test.exe chttp2_fullstack_request_with_large_metadata_test.exe chttp2_fullstack_request_with_payload_test.exe chttp2_fullstack_server_finishes_request_test.exe chttp2_fullstack_simple_delayed_request_test.exe chttp2_fullstack_simple_request_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_fullstack_bad_hostname_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_fullstack_census_simple_request_test.exe chttp2_simple_ssl_fullstack_disappearing_server_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_fullstack_empty_batch_test.exe chttp2_simple_ssl_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_fullstack_max_message_length_test.exe chttp2_simple_ssl_fullstack_no_op_test.exe chttp2_simple_ssl_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_fullstack_registered_call_test.exe chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_with_flags_test.exe chttp2_simple_ssl_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_fullstack_request_with_payload_test.exe chttp2_simple_ssl_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_fullstack_simple_request_test.exe chttp2_simple_ssl_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_with_oauth2_fullstack_bad_hostname_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test.exe chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_message_length_test.exe chttp2_simple_ssl_with_oauth2_fullstack_no_op_test.exe chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_with_oauth2_fullstack_registered_call_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_flags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_bad_hostname_test.exe chttp2_socket_pair_cancel_after_accept_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_cancel_after_invoke_test.exe chttp2_socket_pair_cancel_before_invoke_test.exe chttp2_socket_pair_cancel_in_a_vacuum_test.exe chttp2_socket_pair_census_simple_request_test.exe chttp2_socket_pair_disappearing_server_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_empty_batch_test.exe chttp2_socket_pair_graceful_server_shutdown_test.exe chttp2_socket_pair_invoke_large_request_test.exe chttp2_socket_pair_max_concurrent_streams_test.exe chttp2_socket_pair_max_message_length_test.exe chttp2_socket_pair_no_op_test.exe chttp2_socket_pair_ping_pong_streaming_test.exe chttp2_socket_pair_registered_call_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_payload_test.exe chttp2_socket_pair_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_request_with_flags_test.exe chttp2_socket_pair_request_with_large_metadata_test.exe chttp2_socket_pair_request_with_payload_test.exe chttp2_socket_pair_server_finishes_request_test.exe chttp2_socket_pair_simple_delayed_request_test.exe chttp2_socket_pair_simple_request_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_disappearing_server_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_disappearing_server_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_test.exe chttp2_socket_pair_with_grpc_trace_no_op_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_delayed_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_unsecure_test.exe chttp2_fullstack_cancel_after_accept_unsecure_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_fullstack_cancel_after_invoke_unsecure_test.exe chttp2_fullstack_cancel_before_invoke_unsecure_test.exe chttp2_fullstack_cancel_in_a_vacuum_unsecure_test.exe chttp2_fullstack_census_simple_request_unsecure_test.exe chttp2_fullstack_disappearing_server_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_fullstack_empty_batch_unsecure_test.exe chttp2_fullstack_graceful_server_shutdown_unsecure_test.exe chttp2_fullstack_invoke_large_request_unsecure_test.exe chttp2_fullstack_max_concurrent_streams_unsecure_test.exe chttp2_fullstack_max_message_length_unsecure_test.exe chttp2_fullstack_no_op_unsecure_test.exe chttp2_fullstack_ping_pong_streaming_unsecure_test.exe chttp2_fullstack_registered_call_unsecure_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_payload_unsecure_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_with_flags_unsecure_test.exe chttp2_fullstack_request_with_large_metadata_unsecure_test.exe chttp2_fullstack_request_with_payload_unsecure_test.exe chttp2_fullstack_server_finishes_request_unsecure_test.exe chttp2_fullstack_simple_delayed_request_unsecure_test.exe chttp2_fullstack_simple_request_unsecure_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_bad_hostname_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_census_simple_request_unsecure_test.exe chttp2_socket_pair_disappearing_server_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_empty_batch_unsecure_test.exe chttp2_socket_pair_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_invoke_large_request_unsecure_test.exe chttp2_socket_pair_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_max_message_length_unsecure_test.exe chttp2_socket_pair_no_op_unsecure_test.exe chttp2_socket_pair_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_registered_call_unsecure_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_with_flags_unsecure_test.exe chttp2_socket_pair_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_request_with_payload_unsecure_test.exe chttp2_socket_pair_server_finishes_request_unsecure_test.exe chttp2_socket_pair_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_simple_request_unsecure_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_disappearing_server_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_disappearing_server_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_no_op_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test.exe connection_prefix_bad_client_test.exe initial_settings_frame_bad_client_test.exe 
 	echo All tests built.
 
 buildtests_cxx: interop_client.exe interop_server.exe 
@@ -482,13 +482,6 @@ time_averaged_stats_test.exe: build_libs $(OUT_DIR)
 time_averaged_stats_test: time_averaged_stats_test.exe
 	echo Running time_averaged_stats_test
 	$(OUT_DIR)\time_averaged_stats_test.exe
-time_test.exe: build_libs $(OUT_DIR)
-	echo Building time_test
-	$(CC) $(CFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\test\core\support\time_test.c 
-	$(LINK) $(LFLAGS) /OUT:"$(OUT_DIR)\time_test.exe" Debug\grpc_test_util.lib Debug\grpc.lib Debug\gpr_test_util.lib Debug\gpr.lib $(LIBS) $(OUT_DIR)\time_test.obj 
-time_test: time_test.exe
-	echo Running time_test
-	$(OUT_DIR)\time_test.exe
 timeout_encoding_test.exe: build_libs $(OUT_DIR)
 	echo Building timeout_encoding_test
 	$(CC) $(CFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\test\core\transport\chttp2\timeout_encoding_test.c 
diff --git a/vsprojects/grpc++/grpc++.vcxproj b/vsprojects/grpc++/grpc++.vcxproj
index c1a32656cfc697568d4ac6ce60b49da373f7e370..2d13bf046b5e5c3c7df9c2e45c00b79ad45c77fa 100644
--- a/vsprojects/grpc++/grpc++.vcxproj
+++ b/vsprojects/grpc++/grpc++.vcxproj
@@ -149,6 +149,7 @@
     <ClInclude Include="..\..\include\grpc++\async_generic_service.h" />
     <ClInclude Include="..\..\include\grpc++\async_unary_call.h" />
     <ClInclude Include="..\..\include\grpc++\auth_context.h" />
+    <ClInclude Include="..\..\include\grpc++\auth_property_iterator.h" />
     <ClInclude Include="..\..\include\grpc++\byte_buffer.h" />
     <ClInclude Include="..\..\include\grpc++\channel_arguments.h" />
     <ClInclude Include="..\..\include\grpc++\channel_interface.h" />
@@ -158,6 +159,7 @@
     <ClInclude Include="..\..\include\grpc++\config_protobuf.h" />
     <ClInclude Include="..\..\include\grpc++\create_channel.h" />
     <ClInclude Include="..\..\include\grpc++\credentials.h" />
+    <ClInclude Include="..\..\include\grpc++\fixed_size_thread_pool.h" />
     <ClInclude Include="..\..\include\grpc++\generic_stub.h" />
     <ClInclude Include="..\..\include\grpc++\impl\call.h" />
     <ClInclude Include="..\..\include\grpc++\impl\client_unary_call.h" />
@@ -191,13 +193,14 @@
     <ClInclude Include="..\..\src\cpp\server\secure_server_credentials.h" />
     <ClInclude Include="..\..\src\cpp\client\channel.h" />
     <ClInclude Include="..\..\src\cpp\common\create_auth_context.h" />
-    <ClInclude Include="..\..\src\cpp\server\thread_pool.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\cpp\client\secure_channel_arguments.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\client\secure_credentials.cc">
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\common\auth_property_iterator.cc">
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\common\secure_auth_context.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\common\secure_create_auth_context.cc">
@@ -232,6 +235,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\create_default_thread_pool.cc">
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\server\fixed_size_thread_pool.cc">
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\insecure_server_credentials.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\server.cc">
@@ -242,8 +247,6 @@
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\server_credentials.cc">
     </ClCompile>
-    <ClCompile Include="..\..\src\cpp\server\thread_pool.cc">
-    </ClCompile>
     <ClCompile Include="..\..\src\cpp\util\byte_buffer.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\util\slice.cc">
diff --git a/vsprojects/grpc++/grpc++.vcxproj.filters b/vsprojects/grpc++/grpc++.vcxproj.filters
index e63c77a53d8d116c8649ec0cbc0b4e6d8fdf86bf..c5d8db57aec8e3bdda2d0957f054fe5f2e3a9dd8 100644
--- a/vsprojects/grpc++/grpc++.vcxproj.filters
+++ b/vsprojects/grpc++/grpc++.vcxproj.filters
@@ -7,6 +7,9 @@
     <ClCompile Include="..\..\src\cpp\client\secure_credentials.cc">
       <Filter>src\cpp\client</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\common\auth_property_iterator.cc">
+      <Filter>src\cpp\common</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\common\secure_auth_context.cc">
       <Filter>src\cpp\common</Filter>
     </ClCompile>
@@ -58,6 +61,9 @@
     <ClCompile Include="..\..\src\cpp\server\create_default_thread_pool.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\server\fixed_size_thread_pool.cc">
+      <Filter>src\cpp\server</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\insecure_server_credentials.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
@@ -73,9 +79,6 @@
     <ClCompile Include="..\..\src\cpp\server\server_credentials.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\src\cpp\server\thread_pool.cc">
-      <Filter>src\cpp\server</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\src\cpp\util\byte_buffer.cc">
       <Filter>src\cpp\util</Filter>
     </ClCompile>
@@ -99,6 +102,9 @@
     <ClInclude Include="..\..\include\grpc++\auth_context.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\grpc++\auth_property_iterator.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\grpc++\byte_buffer.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
@@ -126,6 +132,9 @@
     <ClInclude Include="..\..\include\grpc++\credentials.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\grpc++\fixed_size_thread_pool.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\grpc++\generic_stub.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
@@ -221,9 +230,6 @@
     <ClInclude Include="..\..\src\cpp\common\create_auth_context.h">
       <Filter>src\cpp\common</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\src\cpp\server\thread_pool.h">
-      <Filter>src\cpp\server</Filter>
-    </ClInclude>
   </ItemGroup>
 
   <ItemGroup>
diff --git a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj
index 944e7e00013668036b2e6b02859955c3211f4dc8..f03715b353d94d47068feb3f70b36a29795fa3ad 100644
--- a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj
+++ b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj
@@ -149,6 +149,7 @@
     <ClInclude Include="..\..\include\grpc++\async_generic_service.h" />
     <ClInclude Include="..\..\include\grpc++\async_unary_call.h" />
     <ClInclude Include="..\..\include\grpc++\auth_context.h" />
+    <ClInclude Include="..\..\include\grpc++\auth_property_iterator.h" />
     <ClInclude Include="..\..\include\grpc++\byte_buffer.h" />
     <ClInclude Include="..\..\include\grpc++\channel_arguments.h" />
     <ClInclude Include="..\..\include\grpc++\channel_interface.h" />
@@ -158,6 +159,7 @@
     <ClInclude Include="..\..\include\grpc++\config_protobuf.h" />
     <ClInclude Include="..\..\include\grpc++\create_channel.h" />
     <ClInclude Include="..\..\include\grpc++\credentials.h" />
+    <ClInclude Include="..\..\include\grpc++\fixed_size_thread_pool.h" />
     <ClInclude Include="..\..\include\grpc++\generic_stub.h" />
     <ClInclude Include="..\..\include\grpc++\impl\call.h" />
     <ClInclude Include="..\..\include\grpc++\impl\client_unary_call.h" />
@@ -188,7 +190,6 @@
   <ItemGroup>
     <ClInclude Include="..\..\src\cpp\client\channel.h" />
     <ClInclude Include="..\..\src\cpp\common\create_auth_context.h" />
-    <ClInclude Include="..\..\src\cpp\server\thread_pool.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\cpp\common\insecure_create_auth_context.cc">
@@ -221,6 +222,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\create_default_thread_pool.cc">
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\server\fixed_size_thread_pool.cc">
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\insecure_server_credentials.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\server.cc">
@@ -231,8 +234,6 @@
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\server_credentials.cc">
     </ClCompile>
-    <ClCompile Include="..\..\src\cpp\server\thread_pool.cc">
-    </ClCompile>
     <ClCompile Include="..\..\src\cpp\util\byte_buffer.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\util\slice.cc">
diff --git a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
index 73b0a5dccdb5571c1b24ccf878814cc29e30ef0e..8f7f3bcd5e9da380b2d65db5495939d7b0726708 100644
--- a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
+++ b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
@@ -46,6 +46,9 @@
     <ClCompile Include="..\..\src\cpp\server\create_default_thread_pool.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\server\fixed_size_thread_pool.cc">
+      <Filter>src\cpp\server</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\insecure_server_credentials.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
@@ -61,9 +64,6 @@
     <ClCompile Include="..\..\src\cpp\server\server_credentials.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\src\cpp\server\thread_pool.cc">
-      <Filter>src\cpp\server</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\src\cpp\util\byte_buffer.cc">
       <Filter>src\cpp\util</Filter>
     </ClCompile>
@@ -87,6 +87,9 @@
     <ClInclude Include="..\..\include\grpc++\auth_context.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\grpc++\auth_property_iterator.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\grpc++\byte_buffer.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
@@ -114,6 +117,9 @@
     <ClInclude Include="..\..\include\grpc++\credentials.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\grpc++\fixed_size_thread_pool.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\grpc++\generic_stub.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
@@ -200,9 +206,6 @@
     <ClInclude Include="..\..\src\cpp\common\create_auth_context.h">
       <Filter>src\cpp\common</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\src\cpp\server\thread_pool.h">
-      <Filter>src\cpp\server</Filter>
-    </ClInclude>
   </ItemGroup>
 
   <ItemGroup>