diff --git a/.gitignore b/.gitignore
index ad3ec64ab5af94aa39ec68235e659fc8db596466..5e38f5fa01b273e81d9fd0526f707a783a66a5bf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -118,3 +118,13 @@ gdb.txt
 
 # ctags file
 tags
+
+# perf data
+perf.data
+perf.data.old
+
+# bm_diff
+bm_diff_new/
+bm_diff_old/
+bm_*.json
+
diff --git a/BUILD b/BUILD
index 6e24b816c69730f0189b42bb90051ac315715ff3..57ede3167085ac5b015a51efacd2d846f50c4798 100644
--- a/BUILD
+++ b/BUILD
@@ -35,7 +35,8 @@ exports_files(["LICENSE"])
 
 package(default_visibility = ["//visibility:public"])
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_proto_plugin")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library",
+     "grpc_proto_plugin", "grpc_cc_libraries")
 
 # This should be updated along with build.yaml
 g_stands_for = "gentle"
@@ -163,7 +164,7 @@ grpc_cc_library(
     standalone = True,
     deps = [
         "gpr",
-        "grpc++_base",
+        "grpc++_base_unsecure",
         "grpc++_codegen_base",
         "grpc++_codegen_base_src",
         "grpc_unsecure",
@@ -1233,8 +1234,12 @@ grpc_cc_library(
     ],
 )
 
-grpc_cc_library(
-    name = "grpc++_base",
+grpc_cc_libraries(
+    name_list = ["grpc++_base", "grpc++_base_unsecure"],
+    additional_dep_list = [
+        ["grpc", ],
+        ["grpc_unsecure", ],
+    ],
     srcs = [
         "src/cpp/client/channel_cc.cc",
         "src/cpp/client/client_context.cc",
@@ -1269,7 +1274,7 @@ grpc_cc_library(
         "src/cpp/util/status.cc",
         "src/cpp/util/string_ref.cc",
         "src/cpp/util/time_cc.cc",
-    ],
+        ],
     hdrs = [
         "src/cpp/client/create_channel_internal.h",
         "src/cpp/common/channel_filter.h",
@@ -1278,7 +1283,7 @@ grpc_cc_library(
         "src/cpp/server/health/health.pb.h",
         "src/cpp/server/thread_pool_interface.h",
         "src/cpp/thread_manager/thread_manager.h",
-    ],
+        ],
     language = "c++",
     public_hdrs = [
         "include/grpc++/alarm.h",
@@ -1328,9 +1333,8 @@ grpc_cc_library(
         "include/grpc++/support/stub_options.h",
         "include/grpc++/support/sync_stream.h",
         "include/grpc++/support/time.h",
-    ],
+        ],
     deps = [
-        "grpc",
         "grpc++_codegen_base",
     ],
 )
@@ -1364,7 +1368,6 @@ grpc_cc_library(
         "include/grpc++/impl/codegen/slice.h",
         "include/grpc++/impl/codegen/status.h",
         "include/grpc++/impl/codegen/status_code_enum.h",
-        "include/grpc++/impl/codegen/status_helper.h",
         "include/grpc++/impl/codegen/string_ref.h",
         "include/grpc++/impl/codegen/stub_options.h",
         "include/grpc++/impl/codegen/sync_stream.h",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a64698826aebf2a83d69ea05152e77b6a77ac626..2fc304f22366bbb84b356ed48bf57760c60d85b7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -269,8 +269,10 @@ if(NOT MSVC)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
 endif()
 
-if(UNIX)
-  set(_gRPC_ALLTARGETS_LIBRARIES dl rt m pthread)
+if(_gRPC_PLATFORM_MAC)
+  set(_gRPC_ALLTARGETS_LIBRARIES ${CMAKE_DL_LIBS} m pthread)
+elseif(UNIX)
+  set(_gRPC_ALLTARGETS_LIBRARIES ${CMAKE_DL_LIBS} rt m pthread)
 endif()
 
 if(WIN32 AND MSVC)
@@ -391,6 +393,7 @@ add_dependencies(buildtests_c error_test)
 if(_gRPC_PLATFORM_LINUX)
 add_dependencies(buildtests_c ev_epoll_linux_test)
 endif()
+add_dependencies(buildtests_c fake_resolver_test)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 add_dependencies(buildtests_c fd_conservation_posix_test)
 endif()
@@ -492,6 +495,7 @@ add_dependencies(buildtests_c sequential_connectivity_test)
 add_dependencies(buildtests_c server_chttp2_test)
 add_dependencies(buildtests_c server_test)
 add_dependencies(buildtests_c slice_buffer_test)
+add_dependencies(buildtests_c slice_hash_table_test)
 add_dependencies(buildtests_c slice_string_helpers_test)
 add_dependencies(buildtests_c slice_test)
 add_dependencies(buildtests_c sockaddr_resolver_test)
@@ -2457,7 +2461,6 @@ foreach(_hdr
   include/grpc++/impl/codegen/slice.h
   include/grpc++/impl/codegen/status.h
   include/grpc++/impl/codegen/status_code_enum.h
-  include/grpc++/impl/codegen/status_helper.h
   include/grpc++/impl/codegen/string_ref.h
   include/grpc++/impl/codegen/stub_options.h
   include/grpc++/impl/codegen/sync_stream.h
@@ -2850,7 +2853,6 @@ foreach(_hdr
   include/grpc++/impl/codegen/slice.h
   include/grpc++/impl/codegen/status.h
   include/grpc++/impl/codegen/status_code_enum.h
-  include/grpc++/impl/codegen/status_helper.h
   include/grpc++/impl/codegen/string_ref.h
   include/grpc++/impl/codegen/stub_options.h
   include/grpc++/impl/codegen/sync_stream.h
@@ -3240,7 +3242,6 @@ foreach(_hdr
   include/grpc++/impl/codegen/slice.h
   include/grpc++/impl/codegen/status.h
   include/grpc++/impl/codegen/status_code_enum.h
-  include/grpc++/impl/codegen/status_helper.h
   include/grpc++/impl/codegen/string_ref.h
   include/grpc++/impl/codegen/stub_options.h
   include/grpc++/impl/codegen/sync_stream.h
@@ -3548,7 +3549,6 @@ foreach(_hdr
   include/grpc++/impl/codegen/slice.h
   include/grpc++/impl/codegen/status.h
   include/grpc++/impl/codegen/status_code_enum.h
-  include/grpc++/impl/codegen/status_helper.h
   include/grpc++/impl/codegen/string_ref.h
   include/grpc++/impl/codegen/stub_options.h
   include/grpc++/impl/codegen/sync_stream.h
@@ -5446,6 +5446,37 @@ target_link_libraries(ev_epoll_linux_test
 )
 
 endif()
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(fake_resolver_test
+  test/core/client_channel/resolvers/fake_resolver_test.c
+)
+
+
+target_include_directories(fake_resolver_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(fake_resolver_test
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
@@ -7977,6 +8008,37 @@ target_link_libraries(slice_buffer_test
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
+add_executable(slice_hash_table_test
+  test/core/slice/slice_hash_table_test.c
+)
+
+
+target_include_directories(slice_hash_table_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(slice_hash_table_test
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
 add_executable(slice_string_helpers_test
   test/core/slice/slice_string_helpers_test.c
 )
@@ -9749,6 +9811,8 @@ target_include_directories(codegen_test_minimal
 target_link_libraries(codegen_test_minimal
   ${_gRPC_PROTOBUF_LIBRARIES}
   ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc
+  gpr
   ${_gRPC_GFLAGS_LIBRARIES}
 )
 
diff --git a/Makefile b/Makefile
index 415e6b25003b0a98c0b1b26a6b2bc7b0a549add8..85ebd149696e5a3a061fa3dad71750bca951e9b2 100644
--- a/Makefile
+++ b/Makefile
@@ -157,6 +157,15 @@ LDXX_asan-noleaks = clang++
 CPPFLAGS_asan-noleaks = -O0 -fsanitize-coverage=edge -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
 LDFLAGS_asan-noleaks = -fsanitize=address
 
+VALID_CONFIG_c++-compat = 1
+CC_c++-compat = $(DEFAULT_CC)
+CXX_c++-compat = $(DEFAULT_CXX)
+LD_c++-compat = $(DEFAULT_CC)
+LDXX_c++-compat = $(DEFAULT_CXX)
+CFLAGS_c++-compat = -Wc++-compat
+CPPFLAGS_c++-compat = -O0
+DEFINES_c++-compat = _DEBUG DEBUG
+
 VALID_CONFIG_ubsan = 1
 REQUIRE_CUSTOM_LIBRARIES_ubsan = 1
 CC_ubsan = clang
@@ -981,6 +990,7 @@ dualstack_socket_test: $(BINDIR)/$(CONFIG)/dualstack_socket_test
 endpoint_pair_test: $(BINDIR)/$(CONFIG)/endpoint_pair_test
 error_test: $(BINDIR)/$(CONFIG)/error_test
 ev_epoll_linux_test: $(BINDIR)/$(CONFIG)/ev_epoll_linux_test
+fake_resolver_test: $(BINDIR)/$(CONFIG)/fake_resolver_test
 fd_conservation_posix_test: $(BINDIR)/$(CONFIG)/fd_conservation_posix_test
 fd_posix_test: $(BINDIR)/$(CONFIG)/fd_posix_test
 fling_client: $(BINDIR)/$(CONFIG)/fling_client
@@ -1072,6 +1082,7 @@ server_chttp2_test: $(BINDIR)/$(CONFIG)/server_chttp2_test
 server_fuzzer: $(BINDIR)/$(CONFIG)/server_fuzzer
 server_test: $(BINDIR)/$(CONFIG)/server_test
 slice_buffer_test: $(BINDIR)/$(CONFIG)/slice_buffer_test
+slice_hash_table_test: $(BINDIR)/$(CONFIG)/slice_hash_table_test
 slice_string_helpers_test: $(BINDIR)/$(CONFIG)/slice_string_helpers_test
 slice_test: $(BINDIR)/$(CONFIG)/slice_test
 sockaddr_resolver_test: $(BINDIR)/$(CONFIG)/sockaddr_resolver_test
@@ -1366,6 +1377,7 @@ buildtests_c: privatelibs_c \
   $(BINDIR)/$(CONFIG)/endpoint_pair_test \
   $(BINDIR)/$(CONFIG)/error_test \
   $(BINDIR)/$(CONFIG)/ev_epoll_linux_test \
+  $(BINDIR)/$(CONFIG)/fake_resolver_test \
   $(BINDIR)/$(CONFIG)/fd_conservation_posix_test \
   $(BINDIR)/$(CONFIG)/fd_posix_test \
   $(BINDIR)/$(CONFIG)/fling_client \
@@ -1441,6 +1453,7 @@ buildtests_c: privatelibs_c \
   $(BINDIR)/$(CONFIG)/server_chttp2_test \
   $(BINDIR)/$(CONFIG)/server_test \
   $(BINDIR)/$(CONFIG)/slice_buffer_test \
+  $(BINDIR)/$(CONFIG)/slice_hash_table_test \
   $(BINDIR)/$(CONFIG)/slice_string_helpers_test \
   $(BINDIR)/$(CONFIG)/slice_test \
   $(BINDIR)/$(CONFIG)/sockaddr_resolver_test \
@@ -1777,6 +1790,8 @@ test_c: buildtests_c
 	$(Q) $(BINDIR)/$(CONFIG)/error_test || ( echo test error_test failed ; exit 1 )
 	$(E) "[RUN]     Testing ev_epoll_linux_test"
 	$(Q) $(BINDIR)/$(CONFIG)/ev_epoll_linux_test || ( echo test ev_epoll_linux_test failed ; exit 1 )
+	$(E) "[RUN]     Testing fake_resolver_test"
+	$(Q) $(BINDIR)/$(CONFIG)/fake_resolver_test || ( echo test fake_resolver_test failed ; exit 1 )
 	$(E) "[RUN]     Testing fd_conservation_posix_test"
 	$(Q) $(BINDIR)/$(CONFIG)/fd_conservation_posix_test || ( echo test fd_conservation_posix_test failed ; exit 1 )
 	$(E) "[RUN]     Testing fd_posix_test"
@@ -1911,6 +1926,8 @@ test_c: buildtests_c
 	$(Q) $(BINDIR)/$(CONFIG)/server_test || ( echo test server_test failed ; exit 1 )
 	$(E) "[RUN]     Testing slice_buffer_test"
 	$(Q) $(BINDIR)/$(CONFIG)/slice_buffer_test || ( echo test slice_buffer_test failed ; exit 1 )
+	$(E) "[RUN]     Testing slice_hash_table_test"
+	$(Q) $(BINDIR)/$(CONFIG)/slice_hash_table_test || ( echo test slice_hash_table_test failed ; exit 1 )
 	$(E) "[RUN]     Testing slice_string_helpers_test"
 	$(Q) $(BINDIR)/$(CONFIG)/slice_string_helpers_test || ( echo test slice_string_helpers_test failed ; exit 1 )
 	$(E) "[RUN]     Testing slice_test"
@@ -4308,7 +4325,6 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/impl/codegen/slice.h \
     include/grpc++/impl/codegen/status.h \
     include/grpc++/impl/codegen/status_code_enum.h \
-    include/grpc++/impl/codegen/status_helper.h \
     include/grpc++/impl/codegen/string_ref.h \
     include/grpc++/impl/codegen/stub_options.h \
     include/grpc++/impl/codegen/sync_stream.h \
@@ -4709,7 +4725,6 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/impl/codegen/slice.h \
     include/grpc++/impl/codegen/status.h \
     include/grpc++/impl/codegen/status_code_enum.h \
-    include/grpc++/impl/codegen/status_helper.h \
     include/grpc++/impl/codegen/string_ref.h \
     include/grpc++/impl/codegen/stub_options.h \
     include/grpc++/impl/codegen/sync_stream.h \
@@ -5092,7 +5107,6 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/impl/codegen/slice.h \
     include/grpc++/impl/codegen/status.h \
     include/grpc++/impl/codegen/status_code_enum.h \
-    include/grpc++/impl/codegen/status_helper.h \
     include/grpc++/impl/codegen/string_ref.h \
     include/grpc++/impl/codegen/stub_options.h \
     include/grpc++/impl/codegen/sync_stream.h \
@@ -5405,7 +5419,6 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/impl/codegen/slice.h \
     include/grpc++/impl/codegen/status.h \
     include/grpc++/impl/codegen/status_code_enum.h \
-    include/grpc++/impl/codegen/status_helper.h \
     include/grpc++/impl/codegen/string_ref.h \
     include/grpc++/impl/codegen/stub_options.h \
     include/grpc++/impl/codegen/sync_stream.h \
@@ -9403,6 +9416,38 @@ endif
 endif
 
 
+FAKE_RESOLVER_TEST_SRC = \
+    test/core/client_channel/resolvers/fake_resolver_test.c \
+
+FAKE_RESOLVER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(FAKE_RESOLVER_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/fake_resolver_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/fake_resolver_test: $(FAKE_RESOLVER_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) $(FAKE_RESOLVER_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)/fake_resolver_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/client_channel/resolvers/fake_resolver_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_fake_resolver_test: $(FAKE_RESOLVER_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(FAKE_RESOLVER_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 FD_CONSERVATION_POSIX_TEST_SRC = \
     test/core/iomgr/fd_conservation_posix_test.c \
 
@@ -12315,6 +12360,38 @@ endif
 endif
 
 
+SLICE_HASH_TABLE_TEST_SRC = \
+    test/core/slice/slice_hash_table_test.c \
+
+SLICE_HASH_TABLE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(SLICE_HASH_TABLE_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/slice_hash_table_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/slice_hash_table_test: $(SLICE_HASH_TABLE_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) $(SLICE_HASH_TABLE_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)/slice_hash_table_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/slice/slice_hash_table_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_slice_hash_table_test: $(SLICE_HASH_TABLE_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(SLICE_HASH_TABLE_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 SLICE_STRING_HELPERS_TEST_SRC = \
     test/core/slice/slice_string_helpers_test.c \
 
@@ -14163,28 +14240,28 @@ $(BINDIR)/$(CONFIG)/codegen_test_minimal: protobuf_dep_error
 
 else
 
-$(BINDIR)/$(CONFIG)/codegen_test_minimal: $(PROTOBUF_DEP) $(CODEGEN_TEST_MINIMAL_OBJS)
+$(BINDIR)/$(CONFIG)/codegen_test_minimal: $(PROTOBUF_DEP) $(CODEGEN_TEST_MINIMAL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(CODEGEN_TEST_MINIMAL_OBJS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/codegen_test_minimal
+	$(Q) $(LDXX) $(LDFLAGS) $(CODEGEN_TEST_MINIMAL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/codegen_test_minimal
 
 endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/control.o: 
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/control.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/messages.o: 
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/messages.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/payloads.o: 
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/payloads.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/services.o: 
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/services.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/stats.o: 
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/stats.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/test/cpp/codegen/codegen_test_minimal.o: 
+$(OBJDIR)/$(CONFIG)/test/cpp/codegen/codegen_test_minimal.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/cpp/codegen/codegen_init.o: 
+$(OBJDIR)/$(CONFIG)/src/cpp/codegen/codegen_init.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_codegen_test_minimal: $(CODEGEN_TEST_MINIMAL_OBJS:.o=.dep)
 
diff --git a/PYTHON-MANIFEST.in b/PYTHON-MANIFEST.in
index 846530532df40342c9fff3922511311e487c1bb4..bb76b38f9fbc88c87803eff945f3567bc9ed9fc3 100644
--- a/PYTHON-MANIFEST.in
+++ b/PYTHON-MANIFEST.in
@@ -7,7 +7,7 @@ graft include/grpc
 graft third_party/boringssl
 graft third_party/nanopb
 graft third_party/zlib
-graft third_party/c-ares
+graft third_party/cares
 include src/python/grpcio/_spawn_patch.py
 include src/python/grpcio/commands.py
 include src/python/grpcio/grpc_version.py
diff --git a/README.md b/README.md
index e6d8792d9c6eab0933542125d6c315a1556429a5..0edea88518569a336408ee4fa50e4f93bf1761c6 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ See [Performance dashboard](http://performance-dot-grpc-testing.appspot.com/expl
 
 # Repository Structure & Status
 
-This repository contains source code for gRPC libraries for multiple languages written on top of shared C core library [src/core] (src/core).
+This repository contains source code for gRPC libraries for multiple languages written on top of shared C core library [src/core](src/core).
 
 Libraries in different languages may be in different states of development. We are seeking contributions for all of these libraries.
 
@@ -36,10 +36,9 @@ Libraries in different languages may be in different states of development. We a
 | C#                      | [src/csharp](src/csharp)            | 1.0     |
 | Objective-C             | [src/objective-c](src/objective-c)  | 1.0     |
 
-<small>
-Java source code is in the [grpc-java](http://github.com/grpc/grpc-java) repository.
-Go source code is in the [grpc-go](http://github.com/grpc/grpc-go) repository.
-</small>
+Java source code is in the [grpc-java](http://github.com/grpc/grpc-java)
+repository. Go source code is in the
+[grpc-go](http://github.com/grpc/grpc-go) repository.
 
 See [MANIFEST.md](MANIFEST.md) for a listing of top-level items in the
 repository.
diff --git a/WORKSPACE b/WORKSPACE
index 5a3c4de0afbf6f8a39543d408f5296e3b76eeacb..a78a88979e7d149283a9cf3582a31cf964909927 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -15,17 +15,17 @@ bind(
 
 bind(
     name = "protobuf",
-    actual = "@submodule_protobuf//:protobuf",
+    actual = "@com_google_protobuf//:protobuf",
 )
 
 bind(
     name = "protobuf_clib",
-    actual = "@submodule_protobuf//:protoc_lib",
+    actual = "@com_google_protobuf//:protoc_lib",
 )
 
 bind(
     name = "protocol_compiler",
-    actual = "@submodule_protobuf//:protoc",
+    actual = "@com_google_protobuf//:protoc",
 )
 
 bind(
@@ -48,9 +48,8 @@ bind(
     actual = "@com_github_gflags_gflags//:gflags",
 )
 
-new_local_repository(
+local_repository(
     name = "submodule_boringssl",
-    build_file = "third_party/boringssl-with-bazel/BUILD",
     path = "third_party/boringssl-with-bazel",
 )
 
@@ -61,7 +60,7 @@ new_local_repository(
 )
 
 new_local_repository(
-    name = "submodule_protobuf",
+    name = "com_google_protobuf",
     build_file = "third_party/protobuf/BUILD",
     path = "third_party/protobuf",
 )
@@ -77,12 +76,6 @@ local_repository(
     path = "third_party/gflags",
 )
 
-git_repository(
-    name   = "mongoose_repo",
-    commit = "4120a97945b41195a6223a600dae8e3b19bed19e",
-    remote = "https://github.com/makdharma/mongoose.git"
-)
-
 new_local_repository(
     name = "submodule_benchmark",
     path = "third_party/benchmark",
diff --git a/bazel/BUILD b/bazel/BUILD
index b86dcc2ad7ef79bb7308fc4b898d0e2cb64a7433..cb2d9d66aeed3e12f6dd11e4541ab57afe4f2f49 100644
--- a/bazel/BUILD
+++ b/bazel/BUILD
@@ -35,12 +35,12 @@ load(":cc_grpc_library.bzl", "cc_grpc_library")
 
 proto_library(
     name = "well_known_protos_list",
-    srcs = ["@submodule_protobuf//:well_known_protos"],
+    srcs = ["@com_google_protobuf//:well_known_protos"],
 )
 
 cc_grpc_library(
     name = "well_known_protos",
     srcs = "well_known_protos_list",
-    deps = [],
     proto_only = True,
+    deps = [],
 )
diff --git a/bazel/cc_grpc_library.bzl b/bazel/cc_grpc_library.bzl
index ab1add476e1cbcb50237eaf5b669d69b90b5e958..a3996eca0082a0ec44eb7bc4a37a1069a72a2342 100644
--- a/bazel/cc_grpc_library.bzl
+++ b/bazel/cc_grpc_library.bzl
@@ -14,7 +14,7 @@ def cc_grpc_library(name, srcs, deps, proto_only, well_known_protos, use_externa
         the compiled code of any message that the services depend on.
       well_known_protos: The target from protobuf library that exports well
         known protos. Currently it will only work if the value is
-        "@submodule_protobuf//:well_known_protos"
+        "@com_google_protobuf//:well_known_protos"
       use_external: When True the grpc deps are prefixed with //external. This
         allows grpc to be used as a dependency in other bazel projects.
       **kwargs: rest of arguments, e.g., compatible_with and visibility.
diff --git a/bazel/generate_cc.bzl b/bazel/generate_cc.bzl
index f3961f0a4197f5e2bb3e0d7ce1857bd120fe3eaf..35c2983b542c2892cdc7b04d645a94b60d21b937 100644
--- a/bazel/generate_cc.bzl
+++ b/bazel/generate_cc.bzl
@@ -35,10 +35,10 @@ def generate_cc_impl(ctx):
   well_known_proto_files = []
   if ctx.attr.well_known_protos:
     f = ctx.attr.well_known_protos.files.to_list()[0].dirname
-    if f != "external/submodule_protobuf/src/google/protobuf":
-      print("Error: Only @submodule_protobuf//:well_known_protos is supported")
+    if f != "external/com_google_protobuf/src/google/protobuf":
+      print("Error: Only @com_google_protobuf//:well_known_protos is supported")
     else:
-      # f points to "external/submodule_protobuf/src/google/protobuf"
+      # f points to "external/com_google_protobuf/src/google/protobuf"
       # add -I argument to protoc so it knows where to look for the proto files.
       arguments += ["-I{0}".format(f + "/../..")]
       well_known_proto_files = [f for f in ctx.attr.well_known_protos.files]
diff --git a/bazel/grpc_build_system.bzl b/bazel/grpc_build_system.bzl
index 8b524bd0e52023468a4f1379bc881587ea0e4a17..984c06de48980eecce0f03a4799bb402884a13e9 100644
--- a/bazel/grpc_build_system.bzl
+++ b/bazel/grpc_build_system.bzl
@@ -49,6 +49,19 @@ def grpc_cc_library(name, srcs = [], public_hdrs = [], hdrs = [], external_deps
     ]
   )
 
+def grpc_cc_libraries(name_list, additional_dep_list, srcs = [], public_hdrs = [], hdrs = [], external_deps = [], deps = [], standalone = False, language="C++"):
+  for i in range(len(name_list)):
+    grpc_cc_library(
+      name = name_list[i],
+      srcs = srcs,
+      hdrs = hdrs,
+      public_hdrs = public_hdrs,
+      deps = deps + additional_dep_list[i],
+      external_deps = external_deps,
+      standalone = standalone,
+      language = language
+    )
+
 def grpc_proto_plugin(name, srcs = [], deps = []):
   native.cc_binary(
     name = name,
diff --git a/binding.gyp b/binding.gyp
index 35aa5e469b1188b28021234d2cf834dff205ba53..017616ab2e2d03768ad4fa9b1d168354e2862f8e 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -507,7 +507,7 @@
         },
       ]
     }],
-    ['OS == "win"', {
+    ['OS == "win" and runtime!="electron"', {
       'targets': [
         {
           # IMPORTANT WINDOWS BUILD INFORMATION
@@ -518,6 +518,8 @@
           # when including the Node headers. The remedy for this is to remove
           # the OpenSSL headers, from the downloaded Node development package,
           # which is typically located in `.node-gyp` in your home directory.
+          #
+          # This is not true of Electron, which does not have OpenSSL headers.
           'target_name': 'WINDOWS_BUILD_WARNING',
           'rules': [
             {
diff --git a/build.yaml b/build.yaml
index 7d1d858e414e53d10ef0b4835c4eb81941a7426e..a839e5fad5d619f1e7953cf0f6779ca1abbc13ae 100644
--- a/build.yaml
+++ b/build.yaml
@@ -941,7 +941,6 @@ filegroups:
   - include/grpc++/impl/codegen/slice.h
   - include/grpc++/impl/codegen/status.h
   - include/grpc++/impl/codegen/status_code_enum.h
-  - include/grpc++/impl/codegen/status_helper.h
   - include/grpc++/impl/codegen/string_ref.h
   - include/grpc++/impl/codegen/stub_options.h
   - include/grpc++/impl/codegen/sync_stream.h
@@ -1519,6 +1518,7 @@ libs:
   - global
 targets:
 - name: alarm_test
+  cpu_cost: 0.1
   build: test
   language: c
   src:
@@ -1702,7 +1702,7 @@ targets:
   dict: test/core/end2end/fuzzers/hpack.dictionary
   maxlen: 2048
 - name: combiner_test
-  cpu_cost: 30
+  cpu_cost: 10
   build: test
   language: c
   src:
@@ -1723,6 +1723,7 @@ targets:
   - gpr_test_util
   - gpr
 - name: concurrent_connectivity_test
+  cpu_cost: 2.0
   build: test
   language: c
   src:
@@ -1809,6 +1810,7 @@ targets:
   - gpr_test_util
   - gpr
 - name: ev_epoll_linux_test
+  cpu_cost: 3
   build: test
   language: c
   src:
@@ -1822,6 +1824,16 @@ targets:
   - uv
   platforms:
   - linux
+- name: fake_resolver_test
+  build: test
+  language: c
+  src:
+  - test/core/client_channel/resolvers/fake_resolver_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: fd_conservation_posix_test
   build: test
   language: c
@@ -1968,6 +1980,7 @@ targets:
   - gpr_test_util
   - gpr
 - name: gpr_cpu_test
+  cpu_cost: 30
   build: test
   language: c
   src:
@@ -2017,7 +2030,7 @@ targets:
   - gpr_test_util
   - gpr
 - name: gpr_spinlock_test
-  cpu_cost: 10
+  cpu_cost: 3
   build: test
   language: c
   src:
@@ -2799,6 +2812,16 @@ targets:
   - grpc
   - gpr_test_util
   - gpr
+- name: slice_hash_table_test
+  build: test
+  language: c
+  src:
+  - test/core/slice/slice_hash_table_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: slice_string_helpers_test
   build: test
   language: c
@@ -3548,6 +3571,9 @@ targets:
   - src/proto/grpc/testing/services.proto
   - src/proto/grpc/testing/stats.proto
   - test/cpp/codegen/codegen_test_minimal.cc
+  deps:
+  - grpc
+  - gpr
   filegroups:
   - grpc++_codegen_base
   - grpc++_codegen_base_src
@@ -4370,6 +4396,10 @@ configs:
   basicprof:
     CPPFLAGS: -O2 -DGRPC_BASIC_PROFILER -DGRPC_TIMERS_RDTSC
     DEFINES: NDEBUG
+  c++-compat:
+    CFLAGS: -Wc++-compat
+    CPPFLAGS: -O0
+    DEFINES: _DEBUG DEBUG
   counters:
     CPPFLAGS: -O2 -DGPR_LOW_LEVEL_COUNTERS
     DEFINES: NDEBUG
@@ -4511,6 +4541,7 @@ php_config_m4:
   deps:
   - grpc
   - gpr
+  - ares
   - boringssl
   headers:
   - src/php/ext/grpc/byte_buffer.h
diff --git a/config.m4 b/config.m4
index dc2a419322af88db3b5302fb8237246ebf82da07..8609af5ef129021c665ba31407ffcaae84a245bd 100644
--- a/config.m4
+++ b/config.m4
@@ -8,6 +8,8 @@ if test "$PHP_GRPC" != "no"; then
   PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/include)
   PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/src/php/ext/grpc)
   PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/boringssl/include)
+  PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/cares)
+  PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/cares/cares)
 
   LIBS="-lpthread $LIBS"
 
@@ -18,8 +20,11 @@ if test "$PHP_GRPC" != "no"; then
   PHP_ADD_LIBRARY(dl)
 
   case $host in
-    *darwin*) ;;
+    *darwin*)
+      PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/cares/config_darwin)
+      ;;
     *)
+      PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/cares/config_linux)
       PHP_ADD_LIBRARY(rt,,GRPC_SHARED_LIBADD)
       PHP_ADD_LIBRARY(rt)
       ;;
@@ -623,6 +628,55 @@ if test "$PHP_GRPC" != "no"; then
     third_party/boringssl/ssl/tls13_server.c \
     third_party/boringssl/ssl/tls_method.c \
     third_party/boringssl/ssl/tls_record.c \
+    third_party/cares/cares/ares__close_sockets.c \
+    third_party/cares/cares/ares__get_hostent.c \
+    third_party/cares/cares/ares__read_line.c \
+    third_party/cares/cares/ares__timeval.c \
+    third_party/cares/cares/ares_cancel.c \
+    third_party/cares/cares/ares_create_query.c \
+    third_party/cares/cares/ares_data.c \
+    third_party/cares/cares/ares_destroy.c \
+    third_party/cares/cares/ares_expand_name.c \
+    third_party/cares/cares/ares_expand_string.c \
+    third_party/cares/cares/ares_fds.c \
+    third_party/cares/cares/ares_free_hostent.c \
+    third_party/cares/cares/ares_free_string.c \
+    third_party/cares/cares/ares_getenv.c \
+    third_party/cares/cares/ares_gethostbyaddr.c \
+    third_party/cares/cares/ares_gethostbyname.c \
+    third_party/cares/cares/ares_getnameinfo.c \
+    third_party/cares/cares/ares_getopt.c \
+    third_party/cares/cares/ares_getsock.c \
+    third_party/cares/cares/ares_init.c \
+    third_party/cares/cares/ares_library_init.c \
+    third_party/cares/cares/ares_llist.c \
+    third_party/cares/cares/ares_mkquery.c \
+    third_party/cares/cares/ares_nowarn.c \
+    third_party/cares/cares/ares_options.c \
+    third_party/cares/cares/ares_parse_a_reply.c \
+    third_party/cares/cares/ares_parse_aaaa_reply.c \
+    third_party/cares/cares/ares_parse_mx_reply.c \
+    third_party/cares/cares/ares_parse_naptr_reply.c \
+    third_party/cares/cares/ares_parse_ns_reply.c \
+    third_party/cares/cares/ares_parse_ptr_reply.c \
+    third_party/cares/cares/ares_parse_soa_reply.c \
+    third_party/cares/cares/ares_parse_srv_reply.c \
+    third_party/cares/cares/ares_parse_txt_reply.c \
+    third_party/cares/cares/ares_platform.c \
+    third_party/cares/cares/ares_process.c \
+    third_party/cares/cares/ares_query.c \
+    third_party/cares/cares/ares_search.c \
+    third_party/cares/cares/ares_send.c \
+    third_party/cares/cares/ares_strcasecmp.c \
+    third_party/cares/cares/ares_strdup.c \
+    third_party/cares/cares/ares_strerror.c \
+    third_party/cares/cares/ares_timeout.c \
+    third_party/cares/cares/ares_version.c \
+    third_party/cares/cares/ares_writev.c \
+    third_party/cares/cares/bitncmp.c \
+    third_party/cares/cares/inet_net_pton.c \
+    third_party/cares/cares/inet_ntop.c \
+    third_party/cares/cares/windows_port.c \
     , $ext_shared, , -Wall -Werror \
     -Wno-parentheses-equality -Wno-unused-value -std=c11 \
     -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN \
@@ -725,5 +779,6 @@ if test "$PHP_GRPC" != "no"; then
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/boringssl/crypto/x509)
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/boringssl/crypto/x509v3)
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/boringssl/ssl)
+  PHP_ADD_BUILD_DIR($ext_builddir/third_party/cares/cares)
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/nanopb)
 fi
diff --git a/doc/binary-logging.md b/doc/binary-logging.md
index 69020d9828513a03b6f27fb1df0438905db7318c..86b3f766dbd753d315c9e8429bac3968d178b626 100644
--- a/doc/binary-logging.md
+++ b/doc/binary-logging.md
@@ -2,7 +2,7 @@
 
 ## Format
 
-The log format is described in [this proto file](src/proto/grpc/binary_log/v1alpha/log.proto). It is intended that multiple parts of the call will be logged in separate files, and then correlated by analysis tools using the rpc\_id.
+The log format is described in [this proto file](/src/proto/grpc/binary_log/v1alpha/log.proto). It is intended that multiple parts of the call will be logged in separate files, and then correlated by analysis tools using the rpc\_id.
 
 ## API
 
diff --git a/doc/interop-test-descriptions.md b/doc/interop-test-descriptions.md
index 66a034d630709f50373dd3909fb68ad183f21bc8..b040621f8834cd472338d5601e433904e406764b 100644
--- a/doc/interop-test-descriptions.md
+++ b/doc/interop-test-descriptions.md
@@ -81,9 +81,8 @@ Procedure:
     Client marks the request as cacheable by setting the cacheable flag in the
     request context. Longer term this should be driven by the method option
     specified in the proto file itself.
- 2. Client calls CacheableUnaryCall with `SimpleRequest` request again
-    immediately with the same payload as the previous request. Cacheable flag is
-    also set for this request's context.
+ 2. Client calls CacheableUnaryCall again immediately with the same request and
+    configuration as the previous call.
 
 Client asserts:
 * Both calls were successful
@@ -986,6 +985,7 @@ for the `SimpleRequest.response_type`. If the server does not support the
 `response_type`, then it should fail the RPC with `INVALID_ARGUMENT`.
 
 ### CacheableUnaryCall
+[CacheableUnaryCall]: #cacheableunarycall
 
 Server gets the default SimpleRequest proto as the request. The content of the
 request is ignored. It returns the SimpleResponse proto with the payload set
diff --git a/doc/server_side_auth.md b/doc/server_side_auth.md
index 288c6e9cb38b9eb9ee17a8240305ad83c8eb02e7..d260237928d773bf49c4272a58a11ebbe48676d1 100644
--- a/doc/server_side_auth.md
+++ b/doc/server_side_auth.md
@@ -13,7 +13,7 @@ The contents of the *auth properties* are populated by an *auth interceptor*. Th
 
 WARNING: AuthContext is the only reliable source of truth when it comes to authenticating RPCs. Using any other call/context properties for authentication purposes is wrong and inherently unsafe.
 
-####Example AuthContext contents
+#### Example AuthContext contents
 
 For secure channel using mutual TLS authentication with both client and server certificates (test certificates from this repository are used).
 
@@ -45,7 +45,7 @@ gRPC comes with some basic "interceptors" already built-in.
 WARNING: While there is a public API that allows anyone to write their own custom interceptor, please think twice before using it.
 There are legitimate uses for custom interceptors but you should keep in mind that as auth interceptors essentially decide which RPCs are authenticated and which are not, their code is very sensitive from the security perspective and getting things wrong might have serious consequences. If unsure, we strongly recommend to rely on official & proven interceptors that come with gRPC.
 
-####Available auth interceptors
+#### Available auth interceptors
 - TLS/SSL certificate authentication (built into gRPC's security layer, automatically used whenever you use a secure connection)
 - (coming soon) JWT auth token authentication
 - more will be added over time
diff --git a/doc/service_config.md b/doc/service_config.md
index ecc23817d121dec33b06e37e937874da29f37210..8039fcad09586d4f8c6c413dd8f3081c16123a1f 100644
--- a/doc/service_config.md
+++ b/doc/service_config.md
@@ -13,12 +13,21 @@ The service config is a JSON string of the following form:
 ```
 {
   // Load balancing policy name.
-  // Supported values are 'round_robin' and 'grpclb'.
-  // Optional; if unset, the default behavior is pick the first available
-  // backend.
-  // Note that if the resolver returns only balancer addresses and no
-  // backend addresses, gRPC will always use the 'grpclb' policy,
-  // regardless of what this field is set to.
+  // Currently, the only selectable client-side policy provided with gRPC
+  // is 'round_robin', but third parties may add their own policies.
+  // This field is optional; if unset, the default behavior is to pick
+  // the first available backend.
+  // If the policy name is set via the client API, that value overrides
+  // the value specified here.
+  //
+  // Note that if the resolver returns at least one balancer address (as
+  // opposed to backend addresses), gRPC will use grpclb (see
+  // https://github.com/grpc/grpc/blob/master/doc/load-balancing.md),
+  // regardless of what LB policy is requested either here or via the
+  // client API.  However, if the resolver returns at least one backend
+  // address in addition to the balancer address(es), the client may fall
+  // back to the requested policy if it is unable to reach any of the
+  // grpclb load balancers.
   'loadBalancingPolicy': string,
 
   // Per-method configuration.  Optional.
diff --git a/examples/cpp/README.md b/examples/cpp/README.md
index 783935cd53d3206ded632c3fe0c8571a3c9d048a..8e2bb5d13b1f2abea4d8783f4ea03d98995f9436 100644
--- a/examples/cpp/README.md
+++ b/examples/cpp/README.md
@@ -1,4 +1,4 @@
-#gRPC in 3 minutes (C++)
+# gRPC in 3 minutes (C++)
 
 ## Installation
 
diff --git a/examples/cpp/cpptutorial.md b/examples/cpp/cpptutorial.md
index ae84aba9163a9324f854122c965fa947cf77439a..7d98367da43cd977b1a331826c23efc5aa17721f 100644
--- a/examples/cpp/cpptutorial.md
+++ b/examples/cpp/cpptutorial.md
@@ -1,4 +1,4 @@
-#gRPC Basics: C++
+# gRPC Basics: C++
 
 This tutorial provides a basic C++ programmer's introduction to working with
 gRPC. By walking through this example you'll learn how to:
diff --git a/examples/csharp/helloworld-from-cli/Greeter.sln b/examples/csharp/helloworld-from-cli/Greeter.sln
new file mode 100644
index 0000000000000000000000000000000000000000..ca50470e66498a58564c1d0bdc3ad33fb3bc4bde
--- /dev/null
+++ b/examples/csharp/helloworld-from-cli/Greeter.sln
@@ -0,0 +1,34 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26228.4
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Greeter", "Greeter\Greeter.csproj", "{13B6DFC8-F5F6-4CC2-99DF-57A7CF042033}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GreeterClient", "GreeterClient\GreeterClient.csproj", "{B754FB02-D501-4308-8B89-33AB7119C80D}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GreeterServer", "GreeterServer\GreeterServer.csproj", "{DDBFF994-E076-43AD-B18D-049DFC1B670C}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{13B6DFC8-F5F6-4CC2-99DF-57A7CF042033}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{13B6DFC8-F5F6-4CC2-99DF-57A7CF042033}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{13B6DFC8-F5F6-4CC2-99DF-57A7CF042033}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{13B6DFC8-F5F6-4CC2-99DF-57A7CF042033}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B754FB02-D501-4308-8B89-33AB7119C80D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B754FB02-D501-4308-8B89-33AB7119C80D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B754FB02-D501-4308-8B89-33AB7119C80D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B754FB02-D501-4308-8B89-33AB7119C80D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DDBFF994-E076-43AD-B18D-049DFC1B670C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DDBFF994-E076-43AD-B18D-049DFC1B670C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DDBFF994-E076-43AD-B18D-049DFC1B670C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DDBFF994-E076-43AD-B18D-049DFC1B670C}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
diff --git a/examples/csharp/helloworld-from-cli/Greeter/Greeter.csproj b/examples/csharp/helloworld-from-cli/Greeter/Greeter.csproj
new file mode 100644
index 0000000000000000000000000000000000000000..6b26be1c9cd665f07ae86b6bb8014db67ff1e309
--- /dev/null
+++ b/examples/csharp/helloworld-from-cli/Greeter/Greeter.csproj
@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <AssemblyTitle>Greeter</AssemblyTitle>
+    <TargetFrameworks>netcoreapp1.0</TargetFrameworks>
+    <DebugType>portable</DebugType>
+    <AssemblyName>Greeter</AssemblyName>
+    <PackageId>Greeter</PackageId>
+    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Google.Protobuf" Version="3.2.0" />
+    <PackageReference Include="Google.Protobuf.Tools" Version="3.2.0" />
+    <PackageReference Include="Grpc" Version="1.2.2" />
+    <PackageReference Include="Grpc.Tools" Version="1.2.2" />
+  </ItemGroup>
+
+</Project>
diff --git a/examples/csharp/helloworld-from-cli/Greeter/Helloworld.cs b/examples/csharp/helloworld-from-cli/Greeter/Helloworld.cs
index 6477b4f35be82ac49c60d2c9c661533143d56a06..ecfc8e131cb98059244d6bd0ca4cdc25cf276c47 100644
--- a/examples/csharp/helloworld-from-cli/Greeter/Helloworld.cs
+++ b/examples/csharp/helloworld-from-cli/Greeter/Helloworld.cs
@@ -10,7 +10,6 @@ using scg = global::System.Collections.Generic;
 namespace Helloworld {
 
   /// <summary>Holder for reflection information generated from helloworld.proto</summary>
-  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class HelloworldReflection {
 
     #region Descriptor
@@ -41,31 +40,36 @@ namespace Helloworld {
   }
   #region Messages
   /// <summary>
-  ///  The request message containing the user's name.
+  /// The request message containing the user's name.
   /// </summary>
-  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class HelloRequest : pb::IMessage<HelloRequest> {
     private static readonly pb::MessageParser<HelloRequest> _parser = new pb::MessageParser<HelloRequest>(() => new HelloRequest());
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pb::MessageParser<HelloRequest> Parser { get { return _parser; } }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Helloworld.HelloworldReflection.Descriptor.MessageTypes[0]; }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloRequest() {
       OnConstruction();
     }
 
     partial void OnConstruction();
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloRequest(HelloRequest other) : this() {
       name_ = other.name_;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloRequest Clone() {
       return new HelloRequest(this);
     }
@@ -73,6 +77,7 @@ namespace Helloworld {
     /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public string Name {
       get { return name_; }
       set {
@@ -80,10 +85,12 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override bool Equals(object other) {
       return Equals(other as HelloRequest);
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public bool Equals(HelloRequest other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -95,16 +102,19 @@ namespace Helloworld {
       return true;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override int GetHashCode() {
       int hash = 1;
       if (Name.Length != 0) hash ^= Name.GetHashCode();
       return hash;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void WriteTo(pb::CodedOutputStream output) {
       if (Name.Length != 0) {
         output.WriteRawTag(10);
@@ -112,6 +122,7 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public int CalculateSize() {
       int size = 0;
       if (Name.Length != 0) {
@@ -120,6 +131,7 @@ namespace Helloworld {
       return size;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void MergeFrom(HelloRequest other) {
       if (other == null) {
         return;
@@ -129,6 +141,7 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void MergeFrom(pb::CodedInputStream input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -147,31 +160,36 @@ namespace Helloworld {
   }
 
   /// <summary>
-  ///  The response message containing the greetings
+  /// The response message containing the greetings
   /// </summary>
-  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class HelloReply : pb::IMessage<HelloReply> {
     private static readonly pb::MessageParser<HelloReply> _parser = new pb::MessageParser<HelloReply>(() => new HelloReply());
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pb::MessageParser<HelloReply> Parser { get { return _parser; } }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Helloworld.HelloworldReflection.Descriptor.MessageTypes[1]; }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloReply() {
       OnConstruction();
     }
 
     partial void OnConstruction();
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloReply(HelloReply other) : this() {
       message_ = other.message_;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloReply Clone() {
       return new HelloReply(this);
     }
@@ -179,6 +197,7 @@ namespace Helloworld {
     /// <summary>Field number for the "message" field.</summary>
     public const int MessageFieldNumber = 1;
     private string message_ = "";
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public string Message {
       get { return message_; }
       set {
@@ -186,10 +205,12 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override bool Equals(object other) {
       return Equals(other as HelloReply);
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public bool Equals(HelloReply other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -201,16 +222,19 @@ namespace Helloworld {
       return true;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override int GetHashCode() {
       int hash = 1;
       if (Message.Length != 0) hash ^= Message.GetHashCode();
       return hash;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void WriteTo(pb::CodedOutputStream output) {
       if (Message.Length != 0) {
         output.WriteRawTag(10);
@@ -218,6 +242,7 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public int CalculateSize() {
       int size = 0;
       if (Message.Length != 0) {
@@ -226,6 +251,7 @@ namespace Helloworld {
       return size;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void MergeFrom(HelloReply other) {
       if (other == null) {
         return;
@@ -235,6 +261,7 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void MergeFrom(pb::CodedInputStream input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
diff --git a/examples/csharp/helloworld-from-cli/Greeter/HelloworldGrpc.cs b/examples/csharp/helloworld-from-cli/Greeter/HelloworldGrpc.cs
index 041f5a78d758f9d4e3653ff013ea77a4a4f36415..b321ea9e682b79be3063e7a28ea535f9103176dc 100644
--- a/examples/csharp/helloworld-from-cli/Greeter/HelloworldGrpc.cs
+++ b/examples/csharp/helloworld-from-cli/Greeter/HelloworldGrpc.cs
@@ -35,21 +35,21 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core;
+using grpc = global::Grpc.Core;
 
 namespace Helloworld {
   /// <summary>
-  ///  The greeting service definition.
+  /// The greeting service definition.
   /// </summary>
-  public static class Greeter
+  public static partial class Greeter
   {
     static readonly string __ServiceName = "helloworld.Greeter";
 
-    static readonly Marshaller<global::Helloworld.HelloRequest> __Marshaller_HelloRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Helloworld.HelloRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Helloworld.HelloReply> __Marshaller_HelloReply = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Helloworld.HelloReply.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Helloworld.HelloRequest> __Marshaller_HelloRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Helloworld.HelloRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Helloworld.HelloReply> __Marshaller_HelloReply = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Helloworld.HelloReply.Parser.ParseFrom);
 
-    static readonly Method<global::Helloworld.HelloRequest, global::Helloworld.HelloReply> __Method_SayHello = new Method<global::Helloworld.HelloRequest, global::Helloworld.HelloReply>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Helloworld.HelloRequest, global::Helloworld.HelloReply> __Method_SayHello = new grpc::Method<global::Helloworld.HelloRequest, global::Helloworld.HelloReply>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "SayHello",
         __Marshaller_HelloRequest,
@@ -62,29 +62,32 @@ namespace Helloworld {
     }
 
     /// <summary>Base class for server-side implementations of Greeter</summary>
-    public abstract class GreeterBase
+    public abstract partial class GreeterBase
     {
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual global::System.Threading.Tasks.Task<global::Helloworld.HelloReply> SayHello(global::Helloworld.HelloRequest request, ServerCallContext context)
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
+      public virtual global::System.Threading.Tasks.Task<global::Helloworld.HelloReply> SayHello(global::Helloworld.HelloRequest request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for Greeter</summary>
-    public class GreeterClient : ClientBase<GreeterClient>
+    public partial class GreeterClient : grpc::ClientBase<GreeterClient>
     {
       /// <summary>Creates a new client for Greeter</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public GreeterClient(Channel channel) : base(channel)
+      public GreeterClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for Greeter that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public GreeterClient(CallInvoker callInvoker) : base(callInvoker)
+      public GreeterClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -98,33 +101,50 @@ namespace Helloworld {
       }
 
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual global::Helloworld.HelloReply SayHello(global::Helloworld.HelloRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
+      public virtual global::Helloworld.HelloReply SayHello(global::Helloworld.HelloRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return SayHello(request, new CallOptions(headers, deadline, cancellationToken));
+        return SayHello(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual global::Helloworld.HelloReply SayHello(global::Helloworld.HelloRequest request, CallOptions options)
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
+      public virtual global::Helloworld.HelloReply SayHello(global::Helloworld.HelloRequest request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_SayHello, null, options, request);
       }
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual AsyncUnaryCall<global::Helloworld.HelloReply> SayHelloAsync(global::Helloworld.HelloRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncUnaryCall<global::Helloworld.HelloReply> SayHelloAsync(global::Helloworld.HelloRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return SayHelloAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return SayHelloAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual AsyncUnaryCall<global::Helloworld.HelloReply> SayHelloAsync(global::Helloworld.HelloRequest request, CallOptions options)
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncUnaryCall<global::Helloworld.HelloReply> SayHelloAsync(global::Helloworld.HelloRequest request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_SayHello, null, options, request);
       }
+      /// <summary>Creates a new instance of client from given <c>ClientBaseConfiguration</c>.</summary>
       protected override GreeterClient NewInstance(ClientBaseConfiguration configuration)
       {
         return new GreeterClient(configuration);
@@ -132,9 +152,10 @@ namespace Helloworld {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
-    public static ServerServiceDefinition BindService(GreeterBase serviceImpl)
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
+    public static grpc::ServerServiceDefinition BindService(GreeterBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_SayHello, serviceImpl.SayHello).Build();
     }
 
diff --git a/examples/csharp/helloworld-from-cli/Greeter/project.json b/examples/csharp/helloworld-from-cli/Greeter/project.json
deleted file mode 100644
index 72254ce73e9b3e65f22d22441bdd81fb39de6a88..0000000000000000000000000000000000000000
--- a/examples/csharp/helloworld-from-cli/Greeter/project.json
+++ /dev/null
@@ -1,31 +0,0 @@
-{
-  "title": "Greeter",
-  "version": "1.0.0-*",
-  "buildOptions": {
-    "debugType": "portable",
-  },
-  "dependencies": {
-    "Google.Protobuf": "3.0.0",
-    "Grpc": "1.0.1",
-  },
-  "frameworks": {
-    "net45": {
-      "frameworkAssemblies": {
-        "System.Runtime": "",
-        "System.IO": ""
-      },
-      "dependencies": {
-	"Microsoft.NETCore.Platforms": "1.0.1" 
-      }
-    },
-    "netcoreapp1.0": {
-      "dependencies": {
-        "Microsoft.NETCore.App": {
-          "type": "platform",
-          "version": "1.0.1"
-        }
-      },
-      "imports": "dnxcore50"
-    }
-  }
-}
diff --git a/examples/csharp/helloworld-from-cli/GreeterClient/GreeterClient.csproj b/examples/csharp/helloworld-from-cli/GreeterClient/GreeterClient.csproj
new file mode 100644
index 0000000000000000000000000000000000000000..24cacfc0219c77991c04d84e8fb59c98c89fd615
--- /dev/null
+++ b/examples/csharp/helloworld-from-cli/GreeterClient/GreeterClient.csproj
@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <AssemblyTitle>GreeterClient</AssemblyTitle>
+    <TargetFrameworks>netcoreapp1.0</TargetFrameworks>
+    <DebugType>portable</DebugType>
+    <AssemblyName>GreeterClient</AssemblyName>
+    <OutputType>Exe</OutputType>
+    <PackageId>GreeterClient</PackageId>
+    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Greeter\Greeter.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/examples/csharp/helloworld-from-cli/GreeterClient/project.json b/examples/csharp/helloworld-from-cli/GreeterClient/project.json
deleted file mode 100644
index 09e156f68e8f3103f587f5b8b822e54feaf68566..0000000000000000000000000000000000000000
--- a/examples/csharp/helloworld-from-cli/GreeterClient/project.json
+++ /dev/null
@@ -1,35 +0,0 @@
-{
-  "title": "GreeterClient",
-  "version": "1.0.0-*",
-  "buildOptions": {
-    "debugType": "portable",
-    "emitEntryPoint": "true"
-  },
-  "dependencies": {
-    "Google.Protobuf": "3.0.0",
-    "Grpc": "1.0.1",
-    "Greeter": {
-      "target": "project"
-    }
-  },
-  "frameworks": {
-    "net45": {
-      "frameworkAssemblies": {
-        "System.Runtime": "",
-        "System.IO": ""
-      },
-      "dependencies": {
-	"Microsoft.NETCore.Platforms": "1.0.1" 
-      }
-    },
-    "netcoreapp1.0": {
-      "dependencies": {
-        "Microsoft.NETCore.App": {
-          "type": "platform",
-          "version": "1.0.1"
-        }
-      },
-      "imports": "dnxcore50"
-    }
-  }
-}
diff --git a/examples/csharp/helloworld-from-cli/GreeterServer/GreeterServer.csproj b/examples/csharp/helloworld-from-cli/GreeterServer/GreeterServer.csproj
new file mode 100644
index 0000000000000000000000000000000000000000..f7980fa7283a415586a222775f8ff1812d35d3d6
--- /dev/null
+++ b/examples/csharp/helloworld-from-cli/GreeterServer/GreeterServer.csproj
@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <AssemblyTitle>GreeterServer</AssemblyTitle>
+    <TargetFrameworks>netcoreapp1.0</TargetFrameworks>
+    <DebugType>portable</DebugType>
+    <AssemblyName>GreeterServer</AssemblyName>
+    <OutputType>Exe</OutputType>
+    <PackageId>GreeterServer</PackageId>
+    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Greeter\Greeter.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/examples/csharp/helloworld-from-cli/GreeterServer/project.json b/examples/csharp/helloworld-from-cli/GreeterServer/project.json
deleted file mode 100644
index 8802fe32657843089e2f6bb4b2a6f71d32d2ed65..0000000000000000000000000000000000000000
--- a/examples/csharp/helloworld-from-cli/GreeterServer/project.json
+++ /dev/null
@@ -1,35 +0,0 @@
-{
-  "title": "GreeterServer",
-  "version": "1.0.0-*",
-  "buildOptions": {
-    "debugType": "portable",
-    "emitEntryPoint": "true"
-  },
-  "dependencies": {
-    "Google.Protobuf": "3.0.0",
-    "Grpc": "1.0.1",
-    "Greeter": {
-      "target": "project"
-    }
-  },
-  "frameworks": {
-    "net45": {
-      "frameworkAssemblies": {
-        "System.Runtime": "",
-        "System.IO": ""
-      },
-      "dependencies": {
-	"Microsoft.NETCore.Platforms": "1.0.1" 
-      }
-    },
-    "netcoreapp1.0": {
-      "dependencies": {
-        "Microsoft.NETCore.App": {
-          "type": "platform",
-          "version": "1.0.1"
-        }
-      },
-      "imports": "dnxcore50"
-    }
-  }
-}
diff --git a/examples/csharp/helloworld-from-cli/README.md b/examples/csharp/helloworld-from-cli/README.md
index 4db077631d876b0344c4c8eedb56527aef099860..c8f8149f73aed48162854f52582ad36b09735277 100644
--- a/examples/csharp/helloworld-from-cli/README.md
+++ b/examples/csharp/helloworld-from-cli/README.md
@@ -12,26 +12,19 @@ Example projects in this directory depend on the [Grpc](https://www.nuget.org/pa
 and [Google.Protobuf](https://www.nuget.org/packages/Google.Protobuf/) NuGet packages
 which have been already added to the project for you.
 
-The examples in this directory target .NET 4.5 framework, as .NET Core support is
-currently experimental.
-
 PREREQUISITES
 -------------
 
-- The DotNetCore SDK cli.
-
-- The .NET 4.5 framework.
-
-Both are available to download at https://www.microsoft.com/net/download
+- The [.NET Core SDK](https://www.microsoft.com/net/core).
 
 BUILD
 -------
 
 From the `examples/csharp/helloworld-from-cli` directory:
 
-- `dotnet restore`
+- `dotnet restore Greeter.sln`
 
-- `dotnet build **/project.json` (this will automatically download NuGet dependencies)
+- `dotnet build Greeter.sln`
 
 Try it!
 -------
@@ -40,14 +33,14 @@ Try it!
 
   ```
   > cd GreeterServer
-  > dotnet run
+  > dotnet run -f netcoreapp1.0
   ```
 
 - Run the client
 
   ```
   > cd GreeterClient
-  > dotnet run
+  > dotnet run -f netcoreapp1.0
   ```
 
 Tutorial
diff --git a/examples/csharp/helloworld-from-cli/generate_protos.bat b/examples/csharp/helloworld-from-cli/generate_protos.bat
new file mode 100644
index 0000000000000000000000000000000000000000..0a35b70e088912ca89b045e0424192b8421e33cb
--- /dev/null
+++ b/examples/csharp/helloworld-from-cli/generate_protos.bat
@@ -0,0 +1,42 @@
+@rem Copyright 2016, Google Inc.
+@rem All rights reserved.
+@rem
+@rem Redistribution and use in source and binary forms, with or without
+@rem modification, are permitted provided that the following conditions are
+@rem met:
+@rem
+@rem     * Redistributions of source code must retain the above copyright
+@rem notice, this list of conditions and the following disclaimer.
+@rem     * Redistributions in binary form must reproduce the above
+@rem copyright notice, this list of conditions and the following disclaimer
+@rem in the documentation and/or other materials provided with the
+@rem distribution.
+@rem     * Neither the name of Google Inc. nor the names of its
+@rem contributors may be used to endorse or promote products derived from
+@rem this software without specific prior written permission.
+@rem
+@rem THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+@rem "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+@rem LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+@rem A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+@rem OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+@rem SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+@rem LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+@rem DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+@rem THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+@rem (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+@rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+@rem Generate the C# code for .proto files
+
+setlocal
+
+@rem enter this directory
+cd /d %~dp0
+
+set PROTOC=%UserProfile%\.nuget\packages\Google.Protobuf.Tools\3.2.0\tools\windows_x64\protoc.exe
+set PLUGIN=%UserProfile%\.nuget\packages\Grpc.Tools\1.2.2\tools\windows_x64\grpc_csharp_plugin.exe
+
+%PROTOC% -I../../protos --csharp_out Greeter  ../../protos/helloworld.proto --grpc_out Greeter --plugin=protoc-gen-grpc=%PLUGIN%
+
+endlocal
diff --git a/examples/csharp/helloworld-from-cli/global.json b/examples/csharp/helloworld-from-cli/global.json
deleted file mode 100644
index f3c33cef6a5576bc2f2e58da877164f7b04b306b..0000000000000000000000000000000000000000
--- a/examples/csharp/helloworld-from-cli/global.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "sdk": {
-        "version": "1.0.0-preview2-003131"
-    }
-}
\ No newline at end of file
diff --git a/examples/csharp/helloworld/Greeter/Greeter.csproj b/examples/csharp/helloworld/Greeter/Greeter.csproj
index 036e6b59fbcfce1854206e191ad37d76e5b692b0..8dcd2d906669984fcd455b2041b7a0d648af2201 100644
--- a/examples/csharp/helloworld/Greeter/Greeter.csproj
+++ b/examples/csharp/helloworld/Greeter/Greeter.csproj
@@ -10,7 +10,8 @@
     <RootNamespace>Greeter</RootNamespace>
     <AssemblyName>Greeter</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
-    <NuGetPackageImportStamp>2669b4f2</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -31,18 +32,18 @@
     <ConsolePause>false</ConsolePause>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Google.Protobuf, Version=3.0.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Protobuf.3.0.0\lib\net45\Google.Protobuf.dll</HintPath>
+    <Reference Include="Google.Protobuf, Version=3.2.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Protobuf.3.2.0\lib\net45\Google.Protobuf.dll</HintPath>
+      <Private>True</Private>
     </Reference>
-    <Reference Include="Grpc.Core, Version=1.0.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.1.0.1\lib\net45\Grpc.Core.dll</HintPath>
+    <Reference Include="Grpc.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+      <HintPath>..\packages\Grpc.Core.1.2.2\lib\net45\Grpc.Core.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Interactive.Async, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Interactive.Async.3.0.0\lib\net45\System.Interactive.Async.dll</HintPath>
+    <Reference Include="System.Interactive.Async, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Interactive.Async.3.1.1\lib\net45\System.Interactive.Async.dll</HintPath>
+      <Private>True</Private>
     </Reference>
   </ItemGroup>
   <ItemGroup>
@@ -61,11 +62,11 @@
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup />
-  <Import Project="..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" />
+  <Import Project="..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets'))" />
+    <Error Condition="!Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets'))" />
   </Target>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/Greeter/Helloworld.cs b/examples/csharp/helloworld/Greeter/Helloworld.cs
index 6477b4f35be82ac49c60d2c9c661533143d56a06..ecfc8e131cb98059244d6bd0ca4cdc25cf276c47 100644
--- a/examples/csharp/helloworld/Greeter/Helloworld.cs
+++ b/examples/csharp/helloworld/Greeter/Helloworld.cs
@@ -10,7 +10,6 @@ using scg = global::System.Collections.Generic;
 namespace Helloworld {
 
   /// <summary>Holder for reflection information generated from helloworld.proto</summary>
-  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class HelloworldReflection {
 
     #region Descriptor
@@ -41,31 +40,36 @@ namespace Helloworld {
   }
   #region Messages
   /// <summary>
-  ///  The request message containing the user's name.
+  /// The request message containing the user's name.
   /// </summary>
-  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class HelloRequest : pb::IMessage<HelloRequest> {
     private static readonly pb::MessageParser<HelloRequest> _parser = new pb::MessageParser<HelloRequest>(() => new HelloRequest());
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pb::MessageParser<HelloRequest> Parser { get { return _parser; } }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Helloworld.HelloworldReflection.Descriptor.MessageTypes[0]; }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloRequest() {
       OnConstruction();
     }
 
     partial void OnConstruction();
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloRequest(HelloRequest other) : this() {
       name_ = other.name_;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloRequest Clone() {
       return new HelloRequest(this);
     }
@@ -73,6 +77,7 @@ namespace Helloworld {
     /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public string Name {
       get { return name_; }
       set {
@@ -80,10 +85,12 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override bool Equals(object other) {
       return Equals(other as HelloRequest);
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public bool Equals(HelloRequest other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -95,16 +102,19 @@ namespace Helloworld {
       return true;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override int GetHashCode() {
       int hash = 1;
       if (Name.Length != 0) hash ^= Name.GetHashCode();
       return hash;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void WriteTo(pb::CodedOutputStream output) {
       if (Name.Length != 0) {
         output.WriteRawTag(10);
@@ -112,6 +122,7 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public int CalculateSize() {
       int size = 0;
       if (Name.Length != 0) {
@@ -120,6 +131,7 @@ namespace Helloworld {
       return size;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void MergeFrom(HelloRequest other) {
       if (other == null) {
         return;
@@ -129,6 +141,7 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void MergeFrom(pb::CodedInputStream input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -147,31 +160,36 @@ namespace Helloworld {
   }
 
   /// <summary>
-  ///  The response message containing the greetings
+  /// The response message containing the greetings
   /// </summary>
-  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class HelloReply : pb::IMessage<HelloReply> {
     private static readonly pb::MessageParser<HelloReply> _parser = new pb::MessageParser<HelloReply>(() => new HelloReply());
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pb::MessageParser<HelloReply> Parser { get { return _parser; } }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Helloworld.HelloworldReflection.Descriptor.MessageTypes[1]; }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloReply() {
       OnConstruction();
     }
 
     partial void OnConstruction();
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloReply(HelloReply other) : this() {
       message_ = other.message_;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public HelloReply Clone() {
       return new HelloReply(this);
     }
@@ -179,6 +197,7 @@ namespace Helloworld {
     /// <summary>Field number for the "message" field.</summary>
     public const int MessageFieldNumber = 1;
     private string message_ = "";
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public string Message {
       get { return message_; }
       set {
@@ -186,10 +205,12 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override bool Equals(object other) {
       return Equals(other as HelloReply);
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public bool Equals(HelloReply other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -201,16 +222,19 @@ namespace Helloworld {
       return true;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override int GetHashCode() {
       int hash = 1;
       if (Message.Length != 0) hash ^= Message.GetHashCode();
       return hash;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void WriteTo(pb::CodedOutputStream output) {
       if (Message.Length != 0) {
         output.WriteRawTag(10);
@@ -218,6 +242,7 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public int CalculateSize() {
       int size = 0;
       if (Message.Length != 0) {
@@ -226,6 +251,7 @@ namespace Helloworld {
       return size;
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void MergeFrom(HelloReply other) {
       if (other == null) {
         return;
@@ -235,6 +261,7 @@ namespace Helloworld {
       }
     }
 
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public void MergeFrom(pb::CodedInputStream input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
diff --git a/examples/csharp/helloworld/Greeter/HelloworldGrpc.cs b/examples/csharp/helloworld/Greeter/HelloworldGrpc.cs
index 041f5a78d758f9d4e3653ff013ea77a4a4f36415..b321ea9e682b79be3063e7a28ea535f9103176dc 100644
--- a/examples/csharp/helloworld/Greeter/HelloworldGrpc.cs
+++ b/examples/csharp/helloworld/Greeter/HelloworldGrpc.cs
@@ -35,21 +35,21 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core;
+using grpc = global::Grpc.Core;
 
 namespace Helloworld {
   /// <summary>
-  ///  The greeting service definition.
+  /// The greeting service definition.
   /// </summary>
-  public static class Greeter
+  public static partial class Greeter
   {
     static readonly string __ServiceName = "helloworld.Greeter";
 
-    static readonly Marshaller<global::Helloworld.HelloRequest> __Marshaller_HelloRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Helloworld.HelloRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Helloworld.HelloReply> __Marshaller_HelloReply = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Helloworld.HelloReply.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Helloworld.HelloRequest> __Marshaller_HelloRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Helloworld.HelloRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Helloworld.HelloReply> __Marshaller_HelloReply = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Helloworld.HelloReply.Parser.ParseFrom);
 
-    static readonly Method<global::Helloworld.HelloRequest, global::Helloworld.HelloReply> __Method_SayHello = new Method<global::Helloworld.HelloRequest, global::Helloworld.HelloReply>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Helloworld.HelloRequest, global::Helloworld.HelloReply> __Method_SayHello = new grpc::Method<global::Helloworld.HelloRequest, global::Helloworld.HelloReply>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "SayHello",
         __Marshaller_HelloRequest,
@@ -62,29 +62,32 @@ namespace Helloworld {
     }
 
     /// <summary>Base class for server-side implementations of Greeter</summary>
-    public abstract class GreeterBase
+    public abstract partial class GreeterBase
     {
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual global::System.Threading.Tasks.Task<global::Helloworld.HelloReply> SayHello(global::Helloworld.HelloRequest request, ServerCallContext context)
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
+      public virtual global::System.Threading.Tasks.Task<global::Helloworld.HelloReply> SayHello(global::Helloworld.HelloRequest request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for Greeter</summary>
-    public class GreeterClient : ClientBase<GreeterClient>
+    public partial class GreeterClient : grpc::ClientBase<GreeterClient>
     {
       /// <summary>Creates a new client for Greeter</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public GreeterClient(Channel channel) : base(channel)
+      public GreeterClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for Greeter that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public GreeterClient(CallInvoker callInvoker) : base(callInvoker)
+      public GreeterClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -98,33 +101,50 @@ namespace Helloworld {
       }
 
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual global::Helloworld.HelloReply SayHello(global::Helloworld.HelloRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
+      public virtual global::Helloworld.HelloReply SayHello(global::Helloworld.HelloRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return SayHello(request, new CallOptions(headers, deadline, cancellationToken));
+        return SayHello(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual global::Helloworld.HelloReply SayHello(global::Helloworld.HelloRequest request, CallOptions options)
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
+      public virtual global::Helloworld.HelloReply SayHello(global::Helloworld.HelloRequest request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_SayHello, null, options, request);
       }
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual AsyncUnaryCall<global::Helloworld.HelloReply> SayHelloAsync(global::Helloworld.HelloRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncUnaryCall<global::Helloworld.HelloReply> SayHelloAsync(global::Helloworld.HelloRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return SayHelloAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return SayHelloAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  Sends a greeting
+      /// Sends a greeting
       /// </summary>
-      public virtual AsyncUnaryCall<global::Helloworld.HelloReply> SayHelloAsync(global::Helloworld.HelloRequest request, CallOptions options)
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncUnaryCall<global::Helloworld.HelloReply> SayHelloAsync(global::Helloworld.HelloRequest request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_SayHello, null, options, request);
       }
+      /// <summary>Creates a new instance of client from given <c>ClientBaseConfiguration</c>.</summary>
       protected override GreeterClient NewInstance(ClientBaseConfiguration configuration)
       {
         return new GreeterClient(configuration);
@@ -132,9 +152,10 @@ namespace Helloworld {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
-    public static ServerServiceDefinition BindService(GreeterBase serviceImpl)
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
+    public static grpc::ServerServiceDefinition BindService(GreeterBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_SayHello, serviceImpl.SayHello).Build();
     }
 
diff --git a/examples/csharp/helloworld/Greeter/packages.config b/examples/csharp/helloworld/Greeter/packages.config
index 2bb3a182a660b1b20c03a9e4be930586ec3bb58b..ec83cd8300290b3dc22ba8ecaaec18818fba12e7 100644
--- a/examples/csharp/helloworld/Greeter/packages.config
+++ b/examples/csharp/helloworld/Greeter/packages.config
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Protobuf" version="3.0.0" targetFramework="net45" />
-  <package id="Grpc" version="1.0.1" targetFramework="net45" />
-  <package id="Grpc.Core" version="1.0.1" targetFramework="net45" />
-  <package id="System.Interactive.Async" version="3.0.0" targetFramework="net45" />
-  <package id="Grpc.Tools" version="1.0.1" targetFramework="net45" />
-</packages>
+  <package id="Google.Protobuf" version="3.2.0" targetFramework="net45" />
+  <package id="Grpc" version="1.2.2" targetFramework="net45" />
+  <package id="Grpc.Core" version="1.2.2" targetFramework="net45" />
+  <package id="Grpc.Tools" version="1.2.2" targetFramework="net45" />
+  <package id="System.Interactive.Async" version="3.1.1" targetFramework="net45" />
+</packages>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/GreeterClient/GreeterClient.csproj b/examples/csharp/helloworld/GreeterClient/GreeterClient.csproj
index 639ac0e70ca00c0b22b80fc1f649f46f9e22c49f..4b6b1b3e12bc201d2b97a6053532f3d9c620c8e2 100644
--- a/examples/csharp/helloworld/GreeterClient/GreeterClient.csproj
+++ b/examples/csharp/helloworld/GreeterClient/GreeterClient.csproj
@@ -10,7 +10,8 @@
     <RootNamespace>GreeterClient</RootNamespace>
     <AssemblyName>GreeterClient</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
-    <NuGetPackageImportStamp>5e942a7d</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -31,18 +32,18 @@
     <Externalconsole>true</Externalconsole>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Google.Protobuf, Version=3.0.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Protobuf.3.0.0\lib\net45\Google.Protobuf.dll</HintPath>
+    <Reference Include="Google.Protobuf, Version=3.2.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Protobuf.3.2.0\lib\net45\Google.Protobuf.dll</HintPath>
+      <Private>True</Private>
     </Reference>
-    <Reference Include="Grpc.Core, Version=1.0.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.1.0.1\lib\net45\Grpc.Core.dll</HintPath>
+    <Reference Include="Grpc.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+      <HintPath>..\packages\Grpc.Core.1.2.2\lib\net45\Grpc.Core.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Interactive.Async, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Interactive.Async.3.0.0\lib\net45\System.Interactive.Async.dll</HintPath>
+    <Reference Include="System.Interactive.Async, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Interactive.Async.3.1.1\lib\net45\System.Interactive.Async.dll</HintPath>
+      <Private>True</Private>
     </Reference>
   </ItemGroup>
   <ItemGroup>
@@ -59,11 +60,11 @@
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
-  <Import Project="..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" />
+  <Import Project="..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets'))" />
+    <Error Condition="!Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets'))" />
   </Target>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/GreeterClient/packages.config b/examples/csharp/helloworld/GreeterClient/packages.config
index addcae0f17317f727c4361dae91641a7d90c6dc0..b912fd4958069df97e26ac28264cacb5f68a7de6 100644
--- a/examples/csharp/helloworld/GreeterClient/packages.config
+++ b/examples/csharp/helloworld/GreeterClient/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Protobuf" version="3.0.0" targetFramework="net45" />
-  <package id="Grpc" version="1.0.1" targetFramework="net45" />
-  <package id="Grpc.Core" version="1.0.1" targetFramework="net45" />
-  <package id="System.Interactive.Async" version="3.0.0" targetFramework="net45" />
-</packages>
+  <package id="Google.Protobuf" version="3.2.0" targetFramework="net45" />
+  <package id="Grpc" version="1.2.2" targetFramework="net45" />
+  <package id="Grpc.Core" version="1.2.2" targetFramework="net45" />
+  <package id="System.Interactive.Async" version="3.1.1" targetFramework="net45" />
+</packages>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/GreeterServer/GreeterServer.csproj b/examples/csharp/helloworld/GreeterServer/GreeterServer.csproj
index aa7188839c5d57050984f9471ce883f16b2c732d..97978fa7acec627a581bffa0fcd14e455b305297 100644
--- a/examples/csharp/helloworld/GreeterServer/GreeterServer.csproj
+++ b/examples/csharp/helloworld/GreeterServer/GreeterServer.csproj
@@ -10,7 +10,8 @@
     <RootNamespace>GreeterServer</RootNamespace>
     <AssemblyName>GreeterServer</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
-    <NuGetPackageImportStamp>9c7b2963</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -31,18 +32,18 @@
     <Externalconsole>true</Externalconsole>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Google.Protobuf, Version=3.0.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Protobuf.3.0.0\lib\net45\Google.Protobuf.dll</HintPath>
+    <Reference Include="Google.Protobuf, Version=3.2.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Protobuf.3.2.0\lib\net45\Google.Protobuf.dll</HintPath>
+      <Private>True</Private>
     </Reference>
-    <Reference Include="Grpc.Core, Version=1.0.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.1.0.1\lib\net45\Grpc.Core.dll</HintPath>
+    <Reference Include="Grpc.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+      <HintPath>..\packages\Grpc.Core.1.2.2\lib\net45\Grpc.Core.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Interactive.Async, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Interactive.Async.3.0.0\lib\net45\System.Interactive.Async.dll</HintPath>
+    <Reference Include="System.Interactive.Async, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Interactive.Async.3.1.1\lib\net45\System.Interactive.Async.dll</HintPath>
+      <Private>True</Private>
     </Reference>
   </ItemGroup>
   <ItemGroup>
@@ -59,11 +60,11 @@
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
-  <Import Project="..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" />
+  <Import Project="..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets'))" />
+    <Error Condition="!Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets'))" />
   </Target>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/GreeterServer/packages.config b/examples/csharp/helloworld/GreeterServer/packages.config
index addcae0f17317f727c4361dae91641a7d90c6dc0..b912fd4958069df97e26ac28264cacb5f68a7de6 100644
--- a/examples/csharp/helloworld/GreeterServer/packages.config
+++ b/examples/csharp/helloworld/GreeterServer/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Protobuf" version="3.0.0" targetFramework="net45" />
-  <package id="Grpc" version="1.0.1" targetFramework="net45" />
-  <package id="Grpc.Core" version="1.0.1" targetFramework="net45" />
-  <package id="System.Interactive.Async" version="3.0.0" targetFramework="net45" />
-</packages>
+  <package id="Google.Protobuf" version="3.2.0" targetFramework="net45" />
+  <package id="Grpc" version="1.2.2" targetFramework="net45" />
+  <package id="Grpc.Core" version="1.2.2" targetFramework="net45" />
+  <package id="System.Interactive.Async" version="3.1.1" targetFramework="net45" />
+</packages>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/generate_protos.bat b/examples/csharp/helloworld/generate_protos.bat
index 0afa1297621b9ececb3f2be722685ab78c18f273..0d6e92d50f97afccc1afb4569d0a20b70a2898e5 100644
--- a/examples/csharp/helloworld/generate_protos.bat
+++ b/examples/csharp/helloworld/generate_protos.bat
@@ -34,7 +34,7 @@ setlocal
 @rem enter this directory
 cd /d %~dp0
 
-set TOOLS_PATH=packages\Grpc.Tools.1.0.1\tools\windows_x86
+set TOOLS_PATH=packages\Grpc.Tools.1.2.2\tools\windows_x86
 
 %TOOLS_PATH%\protoc.exe -I../../protos --csharp_out Greeter  ../../protos/helloworld.proto --grpc_out Greeter --plugin=protoc-gen-grpc=%TOOLS_PATH%\grpc_csharp_plugin.exe
 
diff --git a/examples/csharp/route_guide/README.md b/examples/csharp/route_guide/README.md
index a9aa87a83dff4669cf32cd8c19e9ba8fc5160d7b..98073b0296342f54590b29704c521455fe43492f 100644
--- a/examples/csharp/route_guide/README.md
+++ b/examples/csharp/route_guide/README.md
@@ -1,4 +1,4 @@
-#gRPC Basics: C# sample code
+# gRPC Basics: C# sample code
 
 The files in this folder are the samples used in [gRPC Basics: C#][],
 a detailed tutorial for using gRPC in C#.
diff --git a/examples/csharp/route_guide/RouteGuide/RouteGuide.cs b/examples/csharp/route_guide/RouteGuide/RouteGuide.cs
index 54cb823983e13dc9ac11dc1092a5ab9a7761f680..603809ee76ff7d1c39bdbef9caa53a078c2d3390 100644
--- a/examples/csharp/route_guide/RouteGuide/RouteGuide.cs
+++ b/examples/csharp/route_guide/RouteGuide/RouteGuide.cs
@@ -53,10 +53,10 @@ namespace Routeguide {
   }
   #region Messages
   /// <summary>
-  ///  Points are represented as latitude-longitude pairs in the E7 representation
-  ///  (degrees multiplied by 10**7 and rounded to the nearest integer).
-  ///  Latitudes should be in the range +/- 90 degrees and longitude should be in
-  ///  the range +/- 180 degrees (inclusive).
+  /// Points are represented as latitude-longitude pairs in the E7 representation
+  /// (degrees multiplied by 10**7 and rounded to the nearest integer).
+  /// Latitudes should be in the range +/- 90 degrees and longitude should be in
+  /// the range +/- 180 degrees (inclusive).
   /// </summary>
   public sealed partial class Point : pb::IMessage<Point> {
     private static readonly pb::MessageParser<Point> _parser = new pb::MessageParser<Point>(() => new Point());
@@ -204,8 +204,8 @@ namespace Routeguide {
   }
 
   /// <summary>
-  ///  A latitude-longitude rectangle, represented as two diagonally opposite
-  ///  points "lo" and "hi".
+  /// A latitude-longitude rectangle, represented as two diagonally opposite
+  /// points "lo" and "hi".
   /// </summary>
   public sealed partial class Rectangle : pb::IMessage<Rectangle> {
     private static readonly pb::MessageParser<Rectangle> _parser = new pb::MessageParser<Rectangle>(() => new Rectangle());
@@ -244,7 +244,7 @@ namespace Routeguide {
     public const int LoFieldNumber = 1;
     private global::Routeguide.Point lo_;
     /// <summary>
-    ///  One corner of the rectangle.
+    /// One corner of the rectangle.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public global::Routeguide.Point Lo {
@@ -258,7 +258,7 @@ namespace Routeguide {
     public const int HiFieldNumber = 2;
     private global::Routeguide.Point hi_;
     /// <summary>
-    ///  The other corner of the rectangle.
+    /// The other corner of the rectangle.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public global::Routeguide.Point Hi {
@@ -371,9 +371,9 @@ namespace Routeguide {
   }
 
   /// <summary>
-  ///  A feature names something at a given point.
+  /// A feature names something at a given point.
   ///
-  ///  If a feature could not be named, the name is empty.
+  /// If a feature could not be named, the name is empty.
   /// </summary>
   public sealed partial class Feature : pb::IMessage<Feature> {
     private static readonly pb::MessageParser<Feature> _parser = new pb::MessageParser<Feature>(() => new Feature());
@@ -412,7 +412,7 @@ namespace Routeguide {
     public const int NameFieldNumber = 1;
     private string name_ = "";
     /// <summary>
-    ///  The name of the feature.
+    /// The name of the feature.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public string Name {
@@ -426,7 +426,7 @@ namespace Routeguide {
     public const int LocationFieldNumber = 2;
     private global::Routeguide.Point location_;
     /// <summary>
-    ///  The point where the feature is detected.
+    /// The point where the feature is detected.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public global::Routeguide.Point Location {
@@ -533,7 +533,7 @@ namespace Routeguide {
   }
 
   /// <summary>
-  ///  A RouteNote is a message sent while at a given point.
+  /// A RouteNote is a message sent while at a given point.
   /// </summary>
   public sealed partial class RouteNote : pb::IMessage<RouteNote> {
     private static readonly pb::MessageParser<RouteNote> _parser = new pb::MessageParser<RouteNote>(() => new RouteNote());
@@ -572,7 +572,7 @@ namespace Routeguide {
     public const int LocationFieldNumber = 1;
     private global::Routeguide.Point location_;
     /// <summary>
-    ///  The location from which the message is sent.
+    /// The location from which the message is sent.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public global::Routeguide.Point Location {
@@ -586,7 +586,7 @@ namespace Routeguide {
     public const int MessageFieldNumber = 2;
     private string message_ = "";
     /// <summary>
-    ///  The message to be sent.
+    /// The message to be sent.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public string Message {
@@ -693,11 +693,11 @@ namespace Routeguide {
   }
 
   /// <summary>
-  ///  A RouteSummary is received in response to a RecordRoute rpc.
+  /// A RouteSummary is received in response to a RecordRoute rpc.
   ///
-  ///  It contains the number of individual points received, the number of
-  ///  detected features, and the total distance covered as the cumulative sum of
-  ///  the distance between each point.
+  /// It contains the number of individual points received, the number of
+  /// detected features, and the total distance covered as the cumulative sum of
+  /// the distance between each point.
   /// </summary>
   public sealed partial class RouteSummary : pb::IMessage<RouteSummary> {
     private static readonly pb::MessageParser<RouteSummary> _parser = new pb::MessageParser<RouteSummary>(() => new RouteSummary());
@@ -738,7 +738,7 @@ namespace Routeguide {
     public const int PointCountFieldNumber = 1;
     private int pointCount_;
     /// <summary>
-    ///  The number of points received.
+    /// The number of points received.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public int PointCount {
@@ -752,7 +752,7 @@ namespace Routeguide {
     public const int FeatureCountFieldNumber = 2;
     private int featureCount_;
     /// <summary>
-    ///  The number of known features passed while traversing the route.
+    /// The number of known features passed while traversing the route.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public int FeatureCount {
@@ -766,7 +766,7 @@ namespace Routeguide {
     public const int DistanceFieldNumber = 3;
     private int distance_;
     /// <summary>
-    ///  The distance covered in metres.
+    /// The distance covered in metres.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public int Distance {
@@ -780,7 +780,7 @@ namespace Routeguide {
     public const int ElapsedTimeFieldNumber = 4;
     private int elapsedTime_;
     /// <summary>
-    ///  The duration of the traversal in seconds.
+    /// The duration of the traversal in seconds.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public int ElapsedTime {
diff --git a/examples/csharp/route_guide/RouteGuide/RouteGuide.csproj b/examples/csharp/route_guide/RouteGuide/RouteGuide.csproj
index eee8f0a1bcee1bc63907d02bbf43b05ea346b254..360444e491826bb9c8de55dbb8713291c541cf34 100644
--- a/examples/csharp/route_guide/RouteGuide/RouteGuide.csproj
+++ b/examples/csharp/route_guide/RouteGuide/RouteGuide.csproj
@@ -11,7 +11,8 @@
     <AssemblyName>RouteGuide</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <NuGetPackageImportStamp>de2137f9</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -31,13 +32,13 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Google.Protobuf, Version=3.0.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Protobuf.3.0.0\lib\net45\Google.Protobuf.dll</HintPath>
+    <Reference Include="Google.Protobuf, Version=3.2.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Protobuf.3.2.0\lib\net45\Google.Protobuf.dll</HintPath>
+      <Private>True</Private>
     </Reference>
-    <Reference Include="Grpc.Core, Version=1.0.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.1.0.1\lib\net45\Grpc.Core.dll</HintPath>
+    <Reference Include="Grpc.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+      <HintPath>..\packages\Grpc.Core.1.2.2\lib\net45\Grpc.Core.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
@@ -45,15 +46,15 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Interactive.Async, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Interactive.Async.3.1.1\lib\net45\System.Interactive.Async.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Data" />
     <Reference Include="System.Xml" />
-    <Reference Include="System.Interactive.Async, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Interactive.Async.3.0.0\lib\net45\System.Interactive.Async.dll</HintPath>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
@@ -74,12 +75,12 @@
     </None>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <Import Project="..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" />
+  <Import Project="..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets'))" />
+    <Error Condition="!Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets'))" />
   </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
@@ -88,4 +89,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
+</Project>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/RouteGuide/RouteGuideGrpc.cs b/examples/csharp/route_guide/RouteGuide/RouteGuideGrpc.cs
index eb70c8e2db5b81cce75a8f1314261f87a0790e86..6f2d6bde6204b5b39dd7b1f9ff358179d7de9be5 100644
--- a/examples/csharp/route_guide/RouteGuide/RouteGuideGrpc.cs
+++ b/examples/csharp/route_guide/RouteGuide/RouteGuideGrpc.cs
@@ -35,45 +35,45 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core;
+using grpc = global::Grpc.Core;
 
 namespace Routeguide {
   /// <summary>
-  ///  Interface exported by the server.
+  /// Interface exported by the server.
   /// </summary>
-  public static class RouteGuide
+  public static partial class RouteGuide
   {
     static readonly string __ServiceName = "routeguide.RouteGuide";
 
-    static readonly Marshaller<global::Routeguide.Point> __Marshaller_Point = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.Point.Parser.ParseFrom);
-    static readonly Marshaller<global::Routeguide.Feature> __Marshaller_Feature = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.Feature.Parser.ParseFrom);
-    static readonly Marshaller<global::Routeguide.Rectangle> __Marshaller_Rectangle = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.Rectangle.Parser.ParseFrom);
-    static readonly Marshaller<global::Routeguide.RouteSummary> __Marshaller_RouteSummary = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.RouteSummary.Parser.ParseFrom);
-    static readonly Marshaller<global::Routeguide.RouteNote> __Marshaller_RouteNote = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.RouteNote.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Routeguide.Point> __Marshaller_Point = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.Point.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Routeguide.Feature> __Marshaller_Feature = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.Feature.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Routeguide.Rectangle> __Marshaller_Rectangle = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.Rectangle.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Routeguide.RouteSummary> __Marshaller_RouteSummary = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.RouteSummary.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Routeguide.RouteNote> __Marshaller_RouteNote = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Routeguide.RouteNote.Parser.ParseFrom);
 
-    static readonly Method<global::Routeguide.Point, global::Routeguide.Feature> __Method_GetFeature = new Method<global::Routeguide.Point, global::Routeguide.Feature>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Routeguide.Point, global::Routeguide.Feature> __Method_GetFeature = new grpc::Method<global::Routeguide.Point, global::Routeguide.Feature>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "GetFeature",
         __Marshaller_Point,
         __Marshaller_Feature);
 
-    static readonly Method<global::Routeguide.Rectangle, global::Routeguide.Feature> __Method_ListFeatures = new Method<global::Routeguide.Rectangle, global::Routeguide.Feature>(
-        MethodType.ServerStreaming,
+    static readonly grpc::Method<global::Routeguide.Rectangle, global::Routeguide.Feature> __Method_ListFeatures = new grpc::Method<global::Routeguide.Rectangle, global::Routeguide.Feature>(
+        grpc::MethodType.ServerStreaming,
         __ServiceName,
         "ListFeatures",
         __Marshaller_Rectangle,
         __Marshaller_Feature);
 
-    static readonly Method<global::Routeguide.Point, global::Routeguide.RouteSummary> __Method_RecordRoute = new Method<global::Routeguide.Point, global::Routeguide.RouteSummary>(
-        MethodType.ClientStreaming,
+    static readonly grpc::Method<global::Routeguide.Point, global::Routeguide.RouteSummary> __Method_RecordRoute = new grpc::Method<global::Routeguide.Point, global::Routeguide.RouteSummary>(
+        grpc::MethodType.ClientStreaming,
         __ServiceName,
         "RecordRoute",
         __Marshaller_Point,
         __Marshaller_RouteSummary);
 
-    static readonly Method<global::Routeguide.RouteNote, global::Routeguide.RouteNote> __Method_RouteChat = new Method<global::Routeguide.RouteNote, global::Routeguide.RouteNote>(
-        MethodType.DuplexStreaming,
+    static readonly grpc::Method<global::Routeguide.RouteNote, global::Routeguide.RouteNote> __Method_RouteChat = new grpc::Method<global::Routeguide.RouteNote, global::Routeguide.RouteNote>(
+        grpc::MethodType.DuplexStreaming,
         __ServiceName,
         "RouteChat",
         __Marshaller_RouteNote,
@@ -86,69 +86,83 @@ namespace Routeguide {
     }
 
     /// <summary>Base class for server-side implementations of RouteGuide</summary>
-    public abstract class RouteGuideBase
+    public abstract partial class RouteGuideBase
     {
       /// <summary>
-      ///  A simple RPC.
+      /// A simple RPC.
       ///
-      ///  Obtains the feature at a given position.
+      /// Obtains the feature at a given position.
       ///
-      ///  A feature with an empty name is returned if there's no feature at the given
-      ///  position.
+      /// A feature with an empty name is returned if there's no feature at the given
+      /// position.
       /// </summary>
-      public virtual global::System.Threading.Tasks.Task<global::Routeguide.Feature> GetFeature(global::Routeguide.Point request, ServerCallContext context)
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
+      public virtual global::System.Threading.Tasks.Task<global::Routeguide.Feature> GetFeature(global::Routeguide.Point request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  A server-to-client streaming RPC.
+      /// A server-to-client streaming RPC.
       ///
-      ///  Obtains the Features available within the given Rectangle.  Results are
-      ///  streamed rather than returned at once (e.g. in a response message with a
-      ///  repeated field), as the rectangle may cover a large area and contain a
-      ///  huge number of features.
+      /// Obtains the Features available within the given Rectangle.  Results are
+      /// streamed rather than returned at once (e.g. in a response message with a
+      /// repeated field), as the rectangle may cover a large area and contain a
+      /// huge number of features.
       /// </summary>
-      public virtual global::System.Threading.Tasks.Task ListFeatures(global::Routeguide.Rectangle request, IServerStreamWriter<global::Routeguide.Feature> responseStream, ServerCallContext context)
+      /// <param name="request">The request received from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
+      public virtual global::System.Threading.Tasks.Task ListFeatures(global::Routeguide.Rectangle request, grpc::IServerStreamWriter<global::Routeguide.Feature> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  A client-to-server streaming RPC.
+      /// A client-to-server streaming RPC.
       ///
-      ///  Accepts a stream of Points on a route being traversed, returning a
-      ///  RouteSummary when traversal is completed.
+      /// Accepts a stream of Points on a route being traversed, returning a
+      /// RouteSummary when traversal is completed.
       /// </summary>
-      public virtual global::System.Threading.Tasks.Task<global::Routeguide.RouteSummary> RecordRoute(IAsyncStreamReader<global::Routeguide.Point> requestStream, ServerCallContext context)
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>The response to send back to the client (wrapped by a task).</returns>
+      public virtual global::System.Threading.Tasks.Task<global::Routeguide.RouteSummary> RecordRoute(grpc::IAsyncStreamReader<global::Routeguide.Point> requestStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
-      ///  A Bidirectional streaming RPC.
+      /// A Bidirectional streaming RPC.
       ///
-      ///  Accepts a stream of RouteNotes sent while a route is being traversed,
-      ///  while receiving other RouteNotes (e.g. from other users).
+      /// Accepts a stream of RouteNotes sent while a route is being traversed,
+      /// while receiving other RouteNotes (e.g. from other users).
       /// </summary>
-      public virtual global::System.Threading.Tasks.Task RouteChat(IAsyncStreamReader<global::Routeguide.RouteNote> requestStream, IServerStreamWriter<global::Routeguide.RouteNote> responseStream, ServerCallContext context)
+      /// <param name="requestStream">Used for reading requests from the client.</param>
+      /// <param name="responseStream">Used for sending responses back to the client.</param>
+      /// <param name="context">The context of the server-side call handler being invoked.</param>
+      /// <returns>A task indicating completion of the handler.</returns>
+      public virtual global::System.Threading.Tasks.Task RouteChat(grpc::IAsyncStreamReader<global::Routeguide.RouteNote> requestStream, grpc::IServerStreamWriter<global::Routeguide.RouteNote> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for RouteGuide</summary>
-    public class RouteGuideClient : ClientBase<RouteGuideClient>
+    public partial class RouteGuideClient : grpc::ClientBase<RouteGuideClient>
     {
       /// <summary>Creates a new client for RouteGuide</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public RouteGuideClient(Channel channel) : base(channel)
+      public RouteGuideClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for RouteGuide that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public RouteGuideClient(CallInvoker callInvoker) : base(callInvoker)
+      public RouteGuideClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -162,117 +176,154 @@ namespace Routeguide {
       }
 
       /// <summary>
-      ///  A simple RPC.
+      /// A simple RPC.
       ///
-      ///  Obtains the feature at a given position.
+      /// Obtains the feature at a given position.
       ///
-      ///  A feature with an empty name is returned if there's no feature at the given
-      ///  position.
+      /// A feature with an empty name is returned if there's no feature at the given
+      /// position.
       /// </summary>
-      public virtual global::Routeguide.Feature GetFeature(global::Routeguide.Point request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The response received from the server.</returns>
+      public virtual global::Routeguide.Feature GetFeature(global::Routeguide.Point request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return GetFeature(request, new CallOptions(headers, deadline, cancellationToken));
+        return GetFeature(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A simple RPC.
+      /// A simple RPC.
       ///
-      ///  Obtains the feature at a given position.
+      /// Obtains the feature at a given position.
       ///
-      ///  A feature with an empty name is returned if there's no feature at the given
-      ///  position.
+      /// A feature with an empty name is returned if there's no feature at the given
+      /// position.
       /// </summary>
-      public virtual global::Routeguide.Feature GetFeature(global::Routeguide.Point request, CallOptions options)
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The response received from the server.</returns>
+      public virtual global::Routeguide.Feature GetFeature(global::Routeguide.Point request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_GetFeature, null, options, request);
       }
       /// <summary>
-      ///  A simple RPC.
+      /// A simple RPC.
       ///
-      ///  Obtains the feature at a given position.
+      /// Obtains the feature at a given position.
       ///
-      ///  A feature with an empty name is returned if there's no feature at the given
-      ///  position.
+      /// A feature with an empty name is returned if there's no feature at the given
+      /// position.
       /// </summary>
-      public virtual AsyncUnaryCall<global::Routeguide.Feature> GetFeatureAsync(global::Routeguide.Point request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncUnaryCall<global::Routeguide.Feature> GetFeatureAsync(global::Routeguide.Point request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return GetFeatureAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return GetFeatureAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A simple RPC.
+      /// A simple RPC.
       ///
-      ///  Obtains the feature at a given position.
+      /// Obtains the feature at a given position.
       ///
-      ///  A feature with an empty name is returned if there's no feature at the given
-      ///  position.
+      /// A feature with an empty name is returned if there's no feature at the given
+      /// position.
       /// </summary>
-      public virtual AsyncUnaryCall<global::Routeguide.Feature> GetFeatureAsync(global::Routeguide.Point request, CallOptions options)
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncUnaryCall<global::Routeguide.Feature> GetFeatureAsync(global::Routeguide.Point request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_GetFeature, null, options, request);
       }
       /// <summary>
-      ///  A server-to-client streaming RPC.
+      /// A server-to-client streaming RPC.
       ///
-      ///  Obtains the Features available within the given Rectangle.  Results are
-      ///  streamed rather than returned at once (e.g. in a response message with a
-      ///  repeated field), as the rectangle may cover a large area and contain a
-      ///  huge number of features.
+      /// Obtains the Features available within the given Rectangle.  Results are
+      /// streamed rather than returned at once (e.g. in a response message with a
+      /// repeated field), as the rectangle may cover a large area and contain a
+      /// huge number of features.
       /// </summary>
-      public virtual AsyncServerStreamingCall<global::Routeguide.Feature> ListFeatures(global::Routeguide.Rectangle request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncServerStreamingCall<global::Routeguide.Feature> ListFeatures(global::Routeguide.Rectangle request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return ListFeatures(request, new CallOptions(headers, deadline, cancellationToken));
+        return ListFeatures(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A server-to-client streaming RPC.
+      /// A server-to-client streaming RPC.
       ///
-      ///  Obtains the Features available within the given Rectangle.  Results are
-      ///  streamed rather than returned at once (e.g. in a response message with a
-      ///  repeated field), as the rectangle may cover a large area and contain a
-      ///  huge number of features.
+      /// Obtains the Features available within the given Rectangle.  Results are
+      /// streamed rather than returned at once (e.g. in a response message with a
+      /// repeated field), as the rectangle may cover a large area and contain a
+      /// huge number of features.
       /// </summary>
-      public virtual AsyncServerStreamingCall<global::Routeguide.Feature> ListFeatures(global::Routeguide.Rectangle request, CallOptions options)
+      /// <param name="request">The request to send to the server.</param>
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncServerStreamingCall<global::Routeguide.Feature> ListFeatures(global::Routeguide.Rectangle request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncServerStreamingCall(__Method_ListFeatures, null, options, request);
       }
       /// <summary>
-      ///  A client-to-server streaming RPC.
+      /// A client-to-server streaming RPC.
       ///
-      ///  Accepts a stream of Points on a route being traversed, returning a
-      ///  RouteSummary when traversal is completed.
+      /// Accepts a stream of Points on a route being traversed, returning a
+      /// RouteSummary when traversal is completed.
       /// </summary>
-      public virtual AsyncClientStreamingCall<global::Routeguide.Point, global::Routeguide.RouteSummary> RecordRoute(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncClientStreamingCall<global::Routeguide.Point, global::Routeguide.RouteSummary> RecordRoute(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return RecordRoute(new CallOptions(headers, deadline, cancellationToken));
+        return RecordRoute(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A client-to-server streaming RPC.
+      /// A client-to-server streaming RPC.
       ///
-      ///  Accepts a stream of Points on a route being traversed, returning a
-      ///  RouteSummary when traversal is completed.
+      /// Accepts a stream of Points on a route being traversed, returning a
+      /// RouteSummary when traversal is completed.
       /// </summary>
-      public virtual AsyncClientStreamingCall<global::Routeguide.Point, global::Routeguide.RouteSummary> RecordRoute(CallOptions options)
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncClientStreamingCall<global::Routeguide.Point, global::Routeguide.RouteSummary> RecordRoute(grpc::CallOptions options)
       {
         return CallInvoker.AsyncClientStreamingCall(__Method_RecordRoute, null, options);
       }
       /// <summary>
-      ///  A Bidirectional streaming RPC.
+      /// A Bidirectional streaming RPC.
       ///
-      ///  Accepts a stream of RouteNotes sent while a route is being traversed,
-      ///  while receiving other RouteNotes (e.g. from other users).
+      /// Accepts a stream of RouteNotes sent while a route is being traversed,
+      /// while receiving other RouteNotes (e.g. from other users).
       /// </summary>
-      public virtual AsyncDuplexStreamingCall<global::Routeguide.RouteNote, global::Routeguide.RouteNote> RouteChat(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      /// <param name="headers">The initial metadata to send with the call. This parameter is optional.</param>
+      /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
+      /// <param name="cancellationToken">An optional token for canceling the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncDuplexStreamingCall<global::Routeguide.RouteNote, global::Routeguide.RouteNote> RouteChat(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return RouteChat(new CallOptions(headers, deadline, cancellationToken));
+        return RouteChat(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
-      ///  A Bidirectional streaming RPC.
+      /// A Bidirectional streaming RPC.
       ///
-      ///  Accepts a stream of RouteNotes sent while a route is being traversed,
-      ///  while receiving other RouteNotes (e.g. from other users).
+      /// Accepts a stream of RouteNotes sent while a route is being traversed,
+      /// while receiving other RouteNotes (e.g. from other users).
       /// </summary>
-      public virtual AsyncDuplexStreamingCall<global::Routeguide.RouteNote, global::Routeguide.RouteNote> RouteChat(CallOptions options)
+      /// <param name="options">The options for the call.</param>
+      /// <returns>The call object.</returns>
+      public virtual grpc::AsyncDuplexStreamingCall<global::Routeguide.RouteNote, global::Routeguide.RouteNote> RouteChat(grpc::CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_RouteChat, null, options);
       }
+      /// <summary>Creates a new instance of client from given <c>ClientBaseConfiguration</c>.</summary>
       protected override RouteGuideClient NewInstance(ClientBaseConfiguration configuration)
       {
         return new RouteGuideClient(configuration);
@@ -280,9 +331,10 @@ namespace Routeguide {
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
-    public static ServerServiceDefinition BindService(RouteGuideBase serviceImpl)
+    /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
+    public static grpc::ServerServiceDefinition BindService(RouteGuideBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_GetFeature, serviceImpl.GetFeature)
           .AddMethod(__Method_ListFeatures, serviceImpl.ListFeatures)
           .AddMethod(__Method_RecordRoute, serviceImpl.RecordRoute)
diff --git a/examples/csharp/route_guide/RouteGuide/packages.config b/examples/csharp/route_guide/RouteGuide/packages.config
index b7c401b3c85140ca5c8c98f9ad83053a6ff2e56a..2dde11f1dd3f45b81904f7918c32f651c752de0e 100644
--- a/examples/csharp/route_guide/RouteGuide/packages.config
+++ b/examples/csharp/route_guide/RouteGuide/packages.config
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Protobuf" version="3.0.0" targetFramework="net45" />
-  <package id="Grpc" version="1.0.1" targetFramework="net45" />
-  <package id="Grpc.Core" version="1.0.1" targetFramework="net45" />
-  <package id="System.Interactive.Async" version="3.0.0" targetFramework="net45" />
+  <package id="Google.Protobuf" version="3.2.0" targetFramework="net45" />
+  <package id="Grpc" version="1.2.2" targetFramework="net45" />
+  <package id="Grpc.Core" version="1.2.2" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
-</packages>
+  <package id="System.Interactive.Async" version="3.1.1" targetFramework="net45" />
+</packages>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/RouteGuideClient/RouteGuideClient.csproj b/examples/csharp/route_guide/RouteGuideClient/RouteGuideClient.csproj
index a513f6af877b60b87f9f228ed693be826e210266..162eaeddc13f323e742a9f5a49715a5f6e60951a 100644
--- a/examples/csharp/route_guide/RouteGuideClient/RouteGuideClient.csproj
+++ b/examples/csharp/route_guide/RouteGuideClient/RouteGuideClient.csproj
@@ -11,7 +11,8 @@
     <AssemblyName>RouteGuideClient</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <NuGetPackageImportStamp>b880049a</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -33,13 +34,13 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Google.Protobuf, Version=3.0.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Protobuf.3.0.0\lib\net45\Google.Protobuf.dll</HintPath>
+    <Reference Include="Google.Protobuf, Version=3.2.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Protobuf.3.2.0\lib\net45\Google.Protobuf.dll</HintPath>
+      <Private>True</Private>
     </Reference>
-    <Reference Include="Grpc.Core, Version=1.0.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.1.0.1\lib\net45\Grpc.Core.dll</HintPath>
+    <Reference Include="Grpc.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+      <HintPath>..\packages\Grpc.Core.1.2.2\lib\net45\Grpc.Core.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
@@ -47,9 +48,9 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
-    <Reference Include="System.Interactive.Async, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Interactive.Async.3.0.0\lib\net45\System.Interactive.Async.dll</HintPath>
+    <Reference Include="System.Interactive.Async, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Interactive.Async.3.1.1\lib\net45\System.Interactive.Async.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
@@ -71,12 +72,12 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <Import Project="..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" />
+  <Import Project="..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets'))" />
+    <Error Condition="!Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets'))" />
   </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
@@ -85,4 +86,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
+</Project>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/RouteGuideClient/packages.config b/examples/csharp/route_guide/RouteGuideClient/packages.config
index b7c401b3c85140ca5c8c98f9ad83053a6ff2e56a..2dde11f1dd3f45b81904f7918c32f651c752de0e 100644
--- a/examples/csharp/route_guide/RouteGuideClient/packages.config
+++ b/examples/csharp/route_guide/RouteGuideClient/packages.config
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Protobuf" version="3.0.0" targetFramework="net45" />
-  <package id="Grpc" version="1.0.1" targetFramework="net45" />
-  <package id="Grpc.Core" version="1.0.1" targetFramework="net45" />
-  <package id="System.Interactive.Async" version="3.0.0" targetFramework="net45" />
+  <package id="Google.Protobuf" version="3.2.0" targetFramework="net45" />
+  <package id="Grpc" version="1.2.2" targetFramework="net45" />
+  <package id="Grpc.Core" version="1.2.2" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
-</packages>
+  <package id="System.Interactive.Async" version="3.1.1" targetFramework="net45" />
+</packages>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/RouteGuideServer/RouteGuideServer.csproj b/examples/csharp/route_guide/RouteGuideServer/RouteGuideServer.csproj
index 8892554b7edc4df8f1612794d5ecf1f32b0e5e3b..b6f2f351aaa2383213560cfa874de0a14af75290 100644
--- a/examples/csharp/route_guide/RouteGuideServer/RouteGuideServer.csproj
+++ b/examples/csharp/route_guide/RouteGuideServer/RouteGuideServer.csproj
@@ -11,7 +11,8 @@
     <AssemblyName>RouteGuideServer</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <NuGetPackageImportStamp>946ecc79</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -33,13 +34,13 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Google.Protobuf, Version=3.0.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Protobuf.3.0.0\lib\net45\Google.Protobuf.dll</HintPath>
+    <Reference Include="Google.Protobuf, Version=3.2.0.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Protobuf.3.2.0\lib\net45\Google.Protobuf.dll</HintPath>
+      <Private>True</Private>
     </Reference>
-    <Reference Include="Grpc.Core, Version=1.0.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.1.0.1\lib\net45\Grpc.Core.dll</HintPath>
+    <Reference Include="Grpc.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+      <HintPath>..\packages\Grpc.Core.1.2.2\lib\net45\Grpc.Core.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
@@ -47,15 +48,15 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Interactive.Async, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Interactive.Async.3.1.1\lib\net45\System.Interactive.Async.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Data" />
     <Reference Include="System.Xml" />
-    <Reference Include="System.Interactive.Async, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Interactive.Async.3.0.0\lib\net45\System.Interactive.Async.dll</HintPath>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Program.cs" />
@@ -72,12 +73,12 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <Import Project="..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" />
+  <Import Project="..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.0.1\build\net45\Grpc.Core.targets'))" />
+    <Error Condition="!Exists('..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.2.2\build\net45\Grpc.Core.targets'))" />
   </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
@@ -86,4 +87,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
+</Project>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/RouteGuideServer/packages.config b/examples/csharp/route_guide/RouteGuideServer/packages.config
index dd498f48ea34ac16a98c78ee5aa73067a2d4ea5c..46df6453da63d59fd9dfcd55aa576532a17b72e0 100644
--- a/examples/csharp/route_guide/RouteGuideServer/packages.config
+++ b/examples/csharp/route_guide/RouteGuideServer/packages.config
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Protobuf" version="3.0.0" targetFramework="net45" />
-  <package id="Grpc" version="1.0.1" targetFramework="net45" />
-  <package id="Grpc.Core" version="1.0.1" targetFramework="net45" />
-  <package id="System.Interactive.Async" version="3.0.0" targetFramework="net45" />
+  <package id="Google.Protobuf" version="3.2.0" targetFramework="net45" />
+  <package id="Grpc" version="1.2.2" targetFramework="net45" />
+  <package id="Grpc.Core" version="1.2.2" targetFramework="net45" />
+  <package id="Grpc.Tools" version="1.2.2" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
-  <package id="Grpc.Tools" version="1.0.1" targetFramework="net45" />
-</packages>
+  <package id="System.Interactive.Async" version="3.1.1" targetFramework="net45" />
+</packages>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/generate_protos.bat b/examples/csharp/route_guide/generate_protos.bat
index 69f5e0f4a397d44212ce8594fb2129b8bd7771fd..fbd951aeb278d4f54859caa4301044e5fcceb8e3 100644
--- a/examples/csharp/route_guide/generate_protos.bat
+++ b/examples/csharp/route_guide/generate_protos.bat
@@ -34,7 +34,7 @@ setlocal
 @rem enter this directory
 cd /d %~dp0
 
-set TOOLS_PATH=packages\Grpc.Tools.1.0.0\tools\windows_x86
+set TOOLS_PATH=packages\Grpc.Tools.1.2.2\tools\windows_x86
 
 %TOOLS_PATH%\protoc.exe -I../../protos --csharp_out RouteGuide  ../../protos/route_guide.proto --grpc_out RouteGuide --plugin=protoc-gen-grpc=%TOOLS_PATH%\grpc_csharp_plugin.exe
 
diff --git a/examples/node/dynamic_codegen/route_guide/README.md b/examples/node/dynamic_codegen/route_guide/README.md
index 22bcf789863df05d58b03b5cc1cf19ed3a32bf7e..7ec519c76bbeefdf8a69a2f6c4f1e30e0d6c9051 100644
--- a/examples/node/dynamic_codegen/route_guide/README.md
+++ b/examples/node/dynamic_codegen/route_guide/README.md
@@ -1,4 +1,4 @@
-#gRPC Basics: Node.js sample code
+# gRPC Basics: Node.js sample code
 
 The files in this folder are the samples used in [gRPC Basics: Node.js][], a detailed tutorial for using gRPC in Node.js.
 
diff --git a/examples/node/static_codegen/route_guide/README.md b/examples/node/static_codegen/route_guide/README.md
index 22bcf789863df05d58b03b5cc1cf19ed3a32bf7e..7ec519c76bbeefdf8a69a2f6c4f1e30e0d6c9051 100644
--- a/examples/node/static_codegen/route_guide/README.md
+++ b/examples/node/static_codegen/route_guide/README.md
@@ -1,4 +1,4 @@
-#gRPC Basics: Node.js sample code
+# gRPC Basics: Node.js sample code
 
 The files in this folder are the samples used in [gRPC Basics: Node.js][], a detailed tutorial for using gRPC in Node.js.
 
diff --git a/examples/objective-c/auth_sample/README.md b/examples/objective-c/auth_sample/README.md
index c560b7af65bc7055dde078842da46d9ba0b52a91..b75dcab2de42f8bada45155a974903082de1fd2d 100644
--- a/examples/objective-c/auth_sample/README.md
+++ b/examples/objective-c/auth_sample/README.md
@@ -1,3 +1,3 @@
-#OAuth2 on gRPC: Objective-C
+# OAuth2 on gRPC: Objective-C
 
 This is the supporting code for the tutorial "[OAuth2 on gRPC: Objective-C](http://www.grpc.io/docs/tutorials/auth/oauth2-objective-c.html)."
diff --git a/examples/objective-c/helloworld/README.md b/examples/objective-c/helloworld/README.md
index fdff938a9784ff617e9c4b167b2fe450f1a80f97..365bea1422823e0180fd7631c0868908145b5f84 100644
--- a/examples/objective-c/helloworld/README.md
+++ b/examples/objective-c/helloworld/README.md
@@ -1,4 +1,4 @@
-#gRPC in 3 minutes (Objective-C)
+# gRPC in 3 minutes (Objective-C)
 
 ## Installation
 
diff --git a/examples/objective-c/route_guide/README.md b/examples/objective-c/route_guide/README.md
index 6a6f7c0d3388fbb9f149058774efcf28f82fef2c..b99bf546fb72f7e555ecb5f48260074a39695c30 100644
--- a/examples/objective-c/route_guide/README.md
+++ b/examples/objective-c/route_guide/README.md
@@ -1,4 +1,4 @@
-#gRPC Basics: Objective-C
+# gRPC Basics: Objective-C
 
 This is the supporting code for the tutorial "[gRPC Basics: Objective-C](http://www.grpc.io/docs/tutorials/basic/objective-c.html)."
 
diff --git a/examples/php/route_guide/README.md b/examples/php/route_guide/README.md
index 26f1704f122cc1a9b8488d3a88130060c0e861e6..5b2cc05efc7c8db660023b744dd058c9ec1494bf 100644
--- a/examples/php/route_guide/README.md
+++ b/examples/php/route_guide/README.md
@@ -1,4 +1,4 @@
-#gRPC Basics: PHP sample code
+# gRPC Basics: PHP sample code
 
 The files in this folder are the samples used in [gRPC Basics: PHP][],
 a detailed tutorial for using gRPC in PHP.
diff --git a/examples/ruby/errors_and_cancellation/README.md b/examples/ruby/errors_and_cancellation/README.md
index 126518c4aab19e7aaf703a728f5f82e5d52954d7..661bd84792f625c50cd2bd2e4ad482c1ae0b611b 100644
--- a/examples/ruby/errors_and_cancellation/README.md
+++ b/examples/ruby/errors_and_cancellation/README.md
@@ -1,4 +1,4 @@
-#Errors and Cancelletion code samples for grpc-ruby
+# Errors and Cancelletion code samples for grpc-ruby
 
 The examples in this directory show use of grpc errors.
 
diff --git a/examples/ruby/route_guide/README.md b/examples/ruby/route_guide/README.md
index 3c353d1d976a200e3e5de686781289ebe869b12c..b2514630a966e92959182261bea568f3b31cb14b 100644
--- a/examples/ruby/route_guide/README.md
+++ b/examples/ruby/route_guide/README.md
@@ -1,4 +1,4 @@
-#gRPC Basics: Ruby sample code
+# gRPC Basics: Ruby sample code
 
 The files in this folder are the samples used in [gRPC Basics: Ruby][],
 a detailed tutorial for using gRPC in Ruby.
diff --git a/grpc.def b/grpc.def
index 1589316a58818fc616fa41d7cf78bc7984561855..ee1dc7788d03664c56a7a2feea297dd0dda15cae 100644
--- a/grpc.def
+++ b/grpc.def
@@ -70,9 +70,9 @@ EXPORTS
     grpc_channel_ping
     grpc_channel_register_call
     grpc_channel_create_registered_call
+    grpc_call_arena_alloc
     grpc_call_start_batch
     grpc_call_get_peer
-    grpc_call_set_load_reporting_cost_context
     grpc_census_call_set_context
     grpc_census_call_get_context
     grpc_channel_get_target
@@ -82,7 +82,8 @@ EXPORTS
     grpc_channel_destroy
     grpc_call_cancel
     grpc_call_cancel_with_status
-    grpc_call_destroy
+    grpc_call_ref
+    grpc_call_unref
     grpc_server_request_call
     grpc_server_register_method
     grpc_server_request_registered_call
diff --git a/include/grpc++/impl/codegen/async_stream.h b/include/grpc++/impl/codegen/async_stream.h
index 8f529895cac567d099da3b8c594b88591dc8b204..f97d824bafe32552803c2c40a9e5f9dbbfbb8369 100644
--- a/include/grpc++/impl/codegen/async_stream.h
+++ b/include/grpc++/impl/codegen/async_stream.h
@@ -145,17 +145,19 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
  public:
   /// Create a stream and write the first request out.
   template <class W>
-  ClientAsyncReader(ChannelInterface* channel, CompletionQueue* cq,
-                    const RpcMethod& method, ClientContext* context,
-                    const W& request, void* tag)
-      : context_(context), call_(channel->CreateCall(method, context, cq)) {
-    init_ops_.set_output_tag(tag);
-    init_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                  context->initial_metadata_flags());
-    // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(init_ops_.SendMessage(request).ok());
-    init_ops_.ClientSendClose();
-    call_.PerformOps(&init_ops_);
+  static ClientAsyncReader* Create(ChannelInterface* channel,
+                                   CompletionQueue* cq, const RpcMethod& method,
+                                   ClientContext* context, const W& request,
+                                   void* tag) {
+    Call call = channel->CreateCall(method, context, cq);
+    return new (g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientAsyncReader)))
+        ClientAsyncReader(call, context, request, tag);
+  }
+
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* ptr, std::size_t size) {
+    assert(size == sizeof(ClientAsyncReader));
   }
 
   void ReadInitialMetadata(void* tag) override {
@@ -185,6 +187,19 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
   }
 
  private:
+  template <class W>
+  ClientAsyncReader(Call call, ClientContext* context, const W& request,
+                    void* tag)
+      : context_(context), call_(call) {
+    init_ops_.set_output_tag(tag);
+    init_ops_.SendInitialMetadata(context->send_initial_metadata_,
+                                  context->initial_metadata_flags());
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(init_ops_.SendMessage(request).ok());
+    init_ops_.ClientSendClose();
+    call_.PerformOps(&init_ops_);
+  }
+
   ClientContext* context_;
   Call call_;
   CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
@@ -210,23 +225,19 @@ template <class W>
 class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
  public:
   template <class R>
-  ClientAsyncWriter(ChannelInterface* channel, CompletionQueue* cq,
-                    const RpcMethod& method, ClientContext* context,
-                    R* response, void* tag)
-      : context_(context), call_(channel->CreateCall(method, context, cq)) {
-    finish_ops_.RecvMessage(response);
-    finish_ops_.AllowNoMessage();
-    // if corked bit is set in context, we buffer up the initial metadata to
-    // coalesce with later message to be sent. No op is performed.
-    if (context_->initial_metadata_corked_) {
-      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                     context->initial_metadata_flags());
-    } else {
-      write_ops_.set_output_tag(tag);
-      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                     context->initial_metadata_flags());
-      call_.PerformOps(&write_ops_);
-    }
+  static ClientAsyncWriter* Create(ChannelInterface* channel,
+                                   CompletionQueue* cq, const RpcMethod& method,
+                                   ClientContext* context, R* response,
+                                   void* tag) {
+    Call call = channel->CreateCall(method, context, cq);
+    return new (g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientAsyncWriter)))
+        ClientAsyncWriter(call, context, response, tag);
+  }
+
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* ptr, std::size_t size) {
+    assert(size == sizeof(ClientAsyncWriter));
   }
 
   void ReadInitialMetadata(void* tag) override {
@@ -271,6 +282,24 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   }
 
  private:
+  template <class R>
+  ClientAsyncWriter(Call call, ClientContext* context, R* response, void* tag)
+      : context_(context), call_(call) {
+    finish_ops_.RecvMessage(response);
+    finish_ops_.AllowNoMessage();
+    // if corked bit is set in context, we buffer up the initial metadata to
+    // coalesce with later message to be sent. No op is performed.
+    if (context_->initial_metadata_corked_) {
+      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
+                                     context->initial_metadata_flags());
+    } else {
+      write_ops_.set_output_tag(tag);
+      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
+                                     context->initial_metadata_flags());
+      call_.PerformOps(&write_ops_);
+    }
+  }
+
   ClientContext* context_;
   Call call_;
   CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
@@ -298,21 +327,20 @@ template <class W, class R>
 class ClientAsyncReaderWriter final
     : public ClientAsyncReaderWriterInterface<W, R> {
  public:
-  ClientAsyncReaderWriter(ChannelInterface* channel, CompletionQueue* cq,
-                          const RpcMethod& method, ClientContext* context,
-                          void* tag)
-      : context_(context), call_(channel->CreateCall(method, context, cq)) {
-    if (context_->initial_metadata_corked_) {
-      // if corked bit is set in context, we buffer up the initial metadata to
-      // coalesce with later message to be sent. No op is performed.
-      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                     context->initial_metadata_flags());
-    } else {
-      write_ops_.set_output_tag(tag);
-      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                     context->initial_metadata_flags());
-      call_.PerformOps(&write_ops_);
-    }
+  static ClientAsyncReaderWriter* Create(ChannelInterface* channel,
+                                         CompletionQueue* cq,
+                                         const RpcMethod& method,
+                                         ClientContext* context, void* tag) {
+    Call call = channel->CreateCall(method, context, cq);
+
+    return new (g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientAsyncReaderWriter)))
+        ClientAsyncReaderWriter(call, context, tag);
+  }
+
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* ptr, std::size_t size) {
+    assert(size == sizeof(ClientAsyncReaderWriter));
   }
 
   void ReadInitialMetadata(void* tag) override {
@@ -366,6 +394,21 @@ class ClientAsyncReaderWriter final
   }
 
  private:
+  ClientAsyncReaderWriter(Call call, ClientContext* context, void* tag)
+      : context_(context), call_(call) {
+    if (context_->initial_metadata_corked_) {
+      // if corked bit is set in context, we buffer up the initial metadata to
+      // coalesce with later message to be sent. No op is performed.
+      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
+                                     context->initial_metadata_flags());
+    } else {
+      write_ops_.set_output_tag(tag);
+      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
+                                     context->initial_metadata_flags());
+      call_.PerformOps(&write_ops_);
+    }
+  }
+
   ClientContext* context_;
   Call call_;
   CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
diff --git a/include/grpc++/impl/codegen/async_unary_call.h b/include/grpc++/impl/codegen/async_unary_call.h
index b77a16b699f9254ed17a4d93c7b0d0d617652fc6..a147a6acbf80acb9af455d7bb8a9ac9b76859b03 100644
--- a/include/grpc++/impl/codegen/async_unary_call.h
+++ b/include/grpc++/impl/codegen/async_unary_call.h
@@ -34,6 +34,7 @@
 #ifndef GRPCXX_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
 #define GRPCXX_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
 
+#include <assert.h>
 #include <grpc++/impl/codegen/call.h>
 #include <grpc++/impl/codegen/channel_interface.h>
 #include <grpc++/impl/codegen/client_context.h>
@@ -59,57 +60,67 @@ class ClientAsyncResponseReader final
     : public ClientAsyncResponseReaderInterface<R> {
  public:
   template <class W>
-  ClientAsyncResponseReader(ChannelInterface* channel, CompletionQueue* cq,
-                            const RpcMethod& method, ClientContext* context,
-                            const W& request)
-      : context_(context),
-        call_(channel->CreateCall(method, context, cq)),
-        collection_(std::make_shared<CallOpSetCollection>()) {
-    collection_->init_buf_.SetCollection(collection_);
-    collection_->init_buf_.SendInitialMetadata(
-        context->send_initial_metadata_, context->initial_metadata_flags());
-    // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(collection_->init_buf_.SendMessage(request).ok());
-    collection_->init_buf_.ClientSendClose();
-    call_.PerformOps(&collection_->init_buf_);
+  static ClientAsyncResponseReader* Create(ChannelInterface* channel,
+                                           CompletionQueue* cq,
+                                           const RpcMethod& method,
+                                           ClientContext* context,
+                                           const W& request) {
+    Call call = channel->CreateCall(method, context, cq);
+    return new (g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientAsyncResponseReader)))
+        ClientAsyncResponseReader(call, context, request);
+  }
+
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* ptr, std::size_t size) {
+    assert(size == sizeof(ClientAsyncResponseReader));
   }
 
   void ReadInitialMetadata(void* tag) {
     GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
 
-    collection_->meta_buf_.SetCollection(collection_);
-    collection_->meta_buf_.set_output_tag(tag);
-    collection_->meta_buf_.RecvInitialMetadata(context_);
-    call_.PerformOps(&collection_->meta_buf_);
+    meta_buf_.set_output_tag(tag);
+    meta_buf_.RecvInitialMetadata(context_);
+    call_.PerformOps(&meta_buf_);
   }
 
   void Finish(R* msg, Status* status, void* tag) {
-    collection_->finish_buf_.SetCollection(collection_);
-    collection_->finish_buf_.set_output_tag(tag);
+    finish_buf_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
-      collection_->finish_buf_.RecvInitialMetadata(context_);
+      finish_buf_.RecvInitialMetadata(context_);
     }
-    collection_->finish_buf_.RecvMessage(msg);
-    collection_->finish_buf_.AllowNoMessage();
-    collection_->finish_buf_.ClientRecvStatus(context_, status);
-    call_.PerformOps(&collection_->finish_buf_);
+    finish_buf_.RecvMessage(msg);
+    finish_buf_.AllowNoMessage();
+    finish_buf_.ClientRecvStatus(context_, status);
+    call_.PerformOps(&finish_buf_);
   }
 
  private:
-  ClientContext* context_;
+  ClientContext* const context_;
   Call call_;
 
-  class CallOpSetCollection : public CallOpSetCollectionInterface {
-   public:
-    SneakyCallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
-                    CallOpClientSendClose>
-        init_buf_;
-    CallOpSet<CallOpRecvInitialMetadata> meta_buf_;
-    CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>,
-              CallOpClientRecvStatus>
-        finish_buf_;
-  };
-  std::shared_ptr<CallOpSetCollection> collection_;
+  template <class W>
+  ClientAsyncResponseReader(Call call, ClientContext* context, const W& request)
+      : context_(context), call_(call) {
+    init_buf_.SendInitialMetadata(context->send_initial_metadata_,
+                                  context->initial_metadata_flags());
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(init_buf_.SendMessage(request).ok());
+    init_buf_.ClientSendClose();
+    call_.PerformOps(&init_buf_);
+  }
+
+  // disable operator new
+  static void* operator new(std::size_t size);
+  static void* operator new(std::size_t size, void* p) { return p; };
+
+  SneakyCallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
+                  CallOpClientSendClose>
+      init_buf_;
+  CallOpSet<CallOpRecvInitialMetadata> meta_buf_;
+  CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>,
+            CallOpClientRecvStatus>
+      finish_buf_;
 };
 
 template <class W>
@@ -179,4 +190,12 @@ class ServerAsyncResponseWriter final : public ServerAsyncStreamingInterface {
 
 }  // namespace grpc
 
+namespace std {
+template <class R>
+class default_delete<grpc::ClientAsyncResponseReader<R>> {
+ public:
+  void operator()(void* p) {}
+};
+}
+
 #endif  // GRPCXX_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
diff --git a/include/grpc++/impl/codegen/call.h b/include/grpc++/impl/codegen/call.h
index dd63c21ff17bc406311b58e3434d802b61f7bc3a..f334ba61d6c118acdf50d29254fc01991a96d271 100644
--- a/include/grpc++/impl/codegen/call.h
+++ b/include/grpc++/impl/codegen/call.h
@@ -34,6 +34,7 @@
 #ifndef GRPCXX_IMPL_CODEGEN_CALL_H
 #define GRPCXX_IMPL_CODEGEN_CALL_H
 
+#include <assert.h>
 #include <cstring>
 #include <functional>
 #include <map>
@@ -47,9 +48,9 @@
 #include <grpc++/impl/codegen/serialization_traits.h>
 #include <grpc++/impl/codegen/slice.h>
 #include <grpc++/impl/codegen/status.h>
-#include <grpc++/impl/codegen/status_helper.h>
 #include <grpc++/impl/codegen/string_ref.h>
 
+#include <grpc/impl/codegen/atm.h>
 #include <grpc/impl/codegen/compression_types.h>
 #include <grpc/impl/codegen/grpc_types.h>
 
@@ -246,8 +247,10 @@ class CallOpSendInitialMetadata {
     op->data.send_initial_metadata.metadata = initial_metadata_;
     op->data.send_initial_metadata.maybe_compression_level.is_set =
         maybe_compression_level_.is_set;
-    op->data.send_initial_metadata.maybe_compression_level.level =
-        maybe_compression_level_.level;
+    if (maybe_compression_level_.is_set) {
+      op->data.send_initial_metadata.maybe_compression_level.level =
+          maybe_compression_level_.level;
+    }
   }
   void FinishOp(bool* status) {
     if (!send_) return;
@@ -468,7 +471,7 @@ class CallOpServerSendStatus {
     trailing_metadata_ = FillMetadataArray(
         trailing_metadata, &trailing_metadata_count_, send_error_details_);
     send_status_available_ = true;
-    send_status_code_ = static_cast<grpc_status_code>(GetCanonicalCode(status));
+    send_status_code_ = static_cast<grpc_status_code>(status.error_code());
     send_error_message_ = status.error_message();
   }
 
@@ -579,17 +582,6 @@ class CallOpClientRecvStatus {
   grpc_slice error_message_;
 };
 
-/// An abstract collection of CallOpSet's, to be used whenever
-/// CallOpSet objects must be thought of as a group. Each member
-/// of the group should have a shared_ptr back to the collection,
-/// as will the object that instantiates the collection, allowing
-/// for automatic ref-counting. In practice, any actual use should
-/// derive from this base class. This is specifically necessary if
-/// some of the CallOpSet's in the collection are "Sneaky" and don't
-/// report back to the C++ layer CQ operations
-class CallOpSetCollectionInterface
-    : public std::enable_shared_from_this<CallOpSetCollectionInterface> {};
-
 /// An abstract collection of call ops, used to generate the
 /// grpc_call_op structure to pass down to the lower layers,
 /// and as it is-a CompletionQueueTag, also massages the final
@@ -597,18 +589,9 @@ class CallOpSetCollectionInterface
 /// API.
 class CallOpSetInterface : public CompletionQueueTag {
  public:
-  CallOpSetInterface() {}
   /// Fills in grpc_op, starting from ops[*nops] and moving
   /// upwards.
-  virtual void FillOps(grpc_op* ops, size_t* nops) = 0;
-
-  /// Mark this as belonging to a collection if needed
-  void SetCollection(std::shared_ptr<CallOpSetCollectionInterface> collection) {
-    collection_ = collection;
-  }
-
- protected:
-  std::shared_ptr<CallOpSetCollectionInterface> collection_;
+  virtual void FillOps(grpc_call* call, grpc_op* ops, size_t* nops) = 0;
 };
 
 /// Primary implementaiton of CallOpSetInterface.
@@ -629,13 +612,15 @@ class CallOpSet : public CallOpSetInterface,
                   public Op6 {
  public:
   CallOpSet() : return_tag_(this) {}
-  void FillOps(grpc_op* ops, size_t* nops) override {
+  void FillOps(grpc_call* call, grpc_op* ops, size_t* nops) override {
     this->Op1::AddOp(ops, nops);
     this->Op2::AddOp(ops, nops);
     this->Op3::AddOp(ops, nops);
     this->Op4::AddOp(ops, nops);
     this->Op5::AddOp(ops, nops);
     this->Op6::AddOp(ops, nops);
+    g_core_codegen_interface->grpc_call_ref(call);
+    call_ = call;
   }
 
   bool FinalizeResult(void** tag, bool* status) override {
@@ -646,7 +631,7 @@ class CallOpSet : public CallOpSetInterface,
     this->Op5::FinishOp(status);
     this->Op6::FinishOp(status);
     *tag = return_tag_;
-    collection_.reset();  // drop the ref at this point
+    g_core_codegen_interface->grpc_call_unref(call_);
     return true;
   }
 
@@ -654,6 +639,7 @@ class CallOpSet : public CallOpSetInterface,
 
  private:
   void* return_tag_;
+  grpc_call* call_;
 };
 
 /// A CallOpSet that does not post completions to the completion queue.
diff --git a/include/grpc++/impl/codegen/core_codegen.h b/include/grpc++/impl/codegen/core_codegen.h
index 65151590b25e99c69070188766ad83b20228bfc2..86601076bdfad32f54a8465f73ec29d47d915e03 100644
--- a/include/grpc++/impl/codegen/core_codegen.h
+++ b/include/grpc++/impl/codegen/core_codegen.h
@@ -68,6 +68,10 @@ class CoreCodegen : public CoreCodegenInterface {
   void gpr_cv_signal(gpr_cv* cv) override;
   void gpr_cv_broadcast(gpr_cv* cv) override;
 
+  void grpc_call_ref(grpc_call* call) override;
+  void grpc_call_unref(grpc_call* call) override;
+  virtual void* grpc_call_arena_alloc(grpc_call* call, size_t length) override;
+
   void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) override;
 
   int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
diff --git a/include/grpc++/impl/codegen/core_codegen_interface.h b/include/grpc++/impl/codegen/core_codegen_interface.h
index 529bef687bb05965afcfddd257c725a6e050c125..a0665f4e0630aee17d43797240e02797ae400a8d 100644
--- a/include/grpc++/impl/codegen/core_codegen_interface.h
+++ b/include/grpc++/impl/codegen/core_codegen_interface.h
@@ -96,6 +96,10 @@ class CoreCodegenInterface {
   virtual grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
                                                         size_t nslices) = 0;
 
+  virtual void grpc_call_ref(grpc_call* call) = 0;
+  virtual void grpc_call_unref(grpc_call* call) = 0;
+  virtual void* grpc_call_arena_alloc(grpc_call* call, size_t length) = 0;
+
   virtual grpc_slice grpc_empty_slice() = 0;
   virtual grpc_slice grpc_slice_malloc(size_t length) = 0;
   virtual void grpc_slice_unref(grpc_slice slice) = 0;
diff --git a/include/grpc++/impl/codegen/status_helper.h b/include/grpc++/impl/codegen/status_helper.h
deleted file mode 100644
index bfe45d9e5b1ccc0d26d598927aaa4b8d419050a8..0000000000000000000000000000000000000000
--- a/include/grpc++/impl/codegen/status_helper.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- *
- * Copyright 2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#ifndef GRPCXX_IMPL_CODEGEN_STATUS_HELPER_H
-#define GRPCXX_IMPL_CODEGEN_STATUS_HELPER_H
-
-#include <grpc++/impl/codegen/status.h>
-
-namespace grpc {
-
-inline StatusCode GetCanonicalCode(const Status& status) {
-  return status.error_code();
-}
-
-}  // namespace grpc
-
-#endif  // GRPCXX_IMPL_CODEGEN_STATUS_HELPER_H
diff --git a/include/grpc++/server.h b/include/grpc++/server.h
index 6d5f89d360a881b8fa7974dc7eb1394edbfb56d5..2f7018e95bf515542185bf0bc077da724dc042eb 100644
--- a/include/grpc++/server.h
+++ b/include/grpc++/server.h
@@ -89,7 +89,8 @@ class Server final : public ServerInterface, private GrpcLibraryCodegen {
     /// Called before server is started.
     virtual void PreServerStart(Server* server) {}
     /// Called after a server port is added.
-    virtual void AddPort(Server* server, int port) {}
+    virtual void AddPort(Server* server, const grpc::string& addr,
+                         ServerCredentials* creds, int port) {}
   };
   /// Set the global callback object. Can only be called once. Does not take
   /// ownership of callbacks, and expects the pointed to object to be alive
diff --git a/include/grpc++/server_builder.h b/include/grpc++/server_builder.h
index d707100a52204ad5eeb2f4943b9068da53381ac3..7ac23349c8437d3fc9dde1f512b4dd3fc204a966 100644
--- a/include/grpc++/server_builder.h
+++ b/include/grpc++/server_builder.h
@@ -195,10 +195,7 @@ class ServerBuilder {
 
   struct SyncServerSettings {
     SyncServerSettings()
-        : num_cqs(1),
-          min_pollers(1),
-          max_pollers(INT_MAX),
-          cq_timeout_msec(1000) {}
+        : num_cqs(1), min_pollers(1), max_pollers(2), cq_timeout_msec(10000) {}
 
     // Number of server completion queues to create to listen to incoming RPCs.
     int num_cqs;
diff --git a/include/grpc/grpc.h b/include/grpc/grpc.h
index 42cf201da4430bf90f88f8e40bd1fc863312f269..5ded4515409987df25a0ed22c4c181efc017f661 100644
--- a/include/grpc/grpc.h
+++ b/include/grpc/grpc.h
@@ -265,6 +265,10 @@ GRPCAPI grpc_call *grpc_channel_create_registered_call(
     grpc_completion_queue *completion_queue, void *registered_call_handle,
     gpr_timespec deadline, void *reserved);
 
+/** Allocate memory in the grpc_call arena: this memory is automatically
+    discarded at call completion */
+GRPCAPI void *grpc_call_arena_alloc(grpc_call *call, size_t size);
+
 /** Start a batch of operations defined in the array ops; when complete, post a
     completion of type 'tag' to the completion queue bound to the call.
     The order of ops specified in the batch has no significance.
@@ -296,12 +300,6 @@ GRPCAPI grpc_call_error grpc_call_start_batch(grpc_call *call,
     functionality. Instead, use grpc_auth_context. */
 GRPCAPI char *grpc_call_get_peer(grpc_call *call);
 
-struct grpc_load_reporting_cost_context;
-
-/* Associate costs contained in \a cost_context to \a call. */
-GRPCAPI void grpc_call_set_load_reporting_cost_context(
-    grpc_call *call, struct grpc_load_reporting_cost_context *context);
-
 struct census_context;
 
 /** Set census context for a call; Must be called before first call to
@@ -347,7 +345,7 @@ GRPCAPI void grpc_channel_destroy(grpc_channel *channel);
 /** Called by clients to cancel an RPC on the server.
     Can be called multiple times, from any thread.
     THREAD-SAFETY grpc_call_cancel and grpc_call_cancel_with_status
-    are thread-safe, and can be called at any point before grpc_call_destroy
+    are thread-safe, and can be called at any point before grpc_call_unref
     is called.*/
 GRPCAPI grpc_call_error grpc_call_cancel(grpc_call *call, void *reserved);
 
@@ -362,9 +360,13 @@ GRPCAPI grpc_call_error grpc_call_cancel_with_status(grpc_call *call,
                                                      const char *description,
                                                      void *reserved);
 
-/** Destroy a call.
-    THREAD SAFETY: grpc_call_destroy is thread-compatible */
-GRPCAPI void grpc_call_destroy(grpc_call *call);
+/** Ref a call.
+    THREAD SAFETY: grpc_call_unref is thread-compatible */
+GRPCAPI void grpc_call_ref(grpc_call *call);
+
+/** Unref a call.
+    THREAD SAFETY: grpc_call_unref is thread-compatible */
+GRPCAPI void grpc_call_unref(grpc_call *call);
 
 /** Request notification of a new call.
     Once a call is received, a notification tagged with \a tag_new is added to
diff --git a/include/grpc/impl/codegen/grpc_types.h b/include/grpc/impl/codegen/grpc_types.h
index 06b67015e3414034b8e32ca37966cf9b43138de7..b5d637ed410dcb32895f9c6983cdd1ba02e4743b 100644
--- a/include/grpc/impl/codegen/grpc_types.h
+++ b/include/grpc/impl/codegen/grpc_types.h
@@ -248,6 +248,8 @@ typedef struct {
 /** Secondary user agent: goes at the end of the user-agent metadata
     sent on each request. A string. */
 #define GRPC_ARG_SECONDARY_USER_AGENT_STRING "grpc.secondary_user_agent"
+/** The minimum time between subsequent connection attempts, in ms */
+#define GRPC_ARG_MIN_RECONNECT_BACKOFF_MS "grpc.min_reconnect_backoff_ms"
 /** The maximum time between subsequent connection attempts, in ms */
 #define GRPC_ARG_MAX_RECONNECT_BACKOFF_MS "grpc.max_reconnect_backoff_ms"
 /** The time between the first and second connection attempts, in ms */
diff --git a/include/grpc/load_reporting.h b/include/grpc/load_reporting.h
index c833ce5c63b9e05b21957248e1f2694d65f824fc..a334a11350759b8866f07f200c46f1f5d27d5cf1 100644
--- a/include/grpc/load_reporting.h
+++ b/include/grpc/load_reporting.h
@@ -35,7 +35,6 @@
 #define GRPC_LOAD_REPORTING_H
 
 #include <grpc/impl/codegen/port_platform.h>
-#include <grpc/slice.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -50,11 +49,12 @@ extern "C" {
  * gRPC LB system. */
 #define GRPC_LB_TOKEN_MD_KEY "lb-token"
 
-/** A sequence of values for load reporting purposes */
-typedef struct grpc_load_reporting_cost_context {
-  grpc_slice *values;
-  size_t values_count;
-} grpc_load_reporting_cost_context;
+/** Metadata key for gRPC LB cost reporting.
+ *
+ * The value corresponding to this key is an opaque binary blob reported by the
+ * backend as part of its trailing metadata containing cost information for the
+ * call. */
+#define GRPC_LB_COST_MD_KEY "lb-cost-bin"
 
 #ifdef __cplusplus
 }
diff --git a/package.xml b/package.xml
index 935d7af8d6d12f51331b6be154fc8d3d9902dd80..a45f4391a28d83b9a748746adb60ff877c75fc8b 100644
--- a/package.xml
+++ b/package.xml
@@ -1030,6 +1030,79 @@
     <file baseinstalldir="/" name="third_party/boringssl/ssl/tls13_server.c" role="src" />
     <file baseinstalldir="/" name="third_party/boringssl/ssl/tls_method.c" role="src" />
     <file baseinstalldir="/" name="third_party/boringssl/ssl/tls_record.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_data.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_dns.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_getenv.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_getopt.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_inet_net_pton.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_iphlpapi.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_ipv6.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_library_init.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_llist.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_nowarn.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_platform.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_private.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_rules.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_setup.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_strcasecmp.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_strdup.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_version.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/bitncmp.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/config-win32.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/setup_once.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/ares_build.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/config_linux/ares_config.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/config_darwin/ares_config.h" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares__close_sockets.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares__get_hostent.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares__read_line.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares__timeval.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_cancel.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_create_query.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_data.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_destroy.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_expand_name.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_expand_string.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_fds.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_free_hostent.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_free_string.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_getenv.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_gethostbyaddr.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_gethostbyname.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_getnameinfo.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_getopt.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_getsock.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_init.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_library_init.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_llist.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_mkquery.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_nowarn.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_options.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_parse_a_reply.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_parse_aaaa_reply.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_parse_mx_reply.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_parse_naptr_reply.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_parse_ns_reply.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_parse_ptr_reply.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_parse_soa_reply.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_parse_srv_reply.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_parse_txt_reply.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_platform.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_process.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_query.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_search.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_send.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_strcasecmp.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_strdup.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_strerror.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_timeout.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_version.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/ares_writev.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/bitncmp.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/inet_net_pton.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/inet_ntop.c" role="src" />
+    <file baseinstalldir="/" name="third_party/cares/cares/windows_port.c" role="src" />
   </dir>
  </contents>
  <dependencies>
diff --git a/src/compiler/cpp_generator.cc b/src/compiler/cpp_generator.cc
index c01e830cd6886189148f5510787e38c97ca29045..4cc6a4cf39375cc5e9f8bec178897c7c0b739f65 100644
--- a/src/compiler/cpp_generator.cc
+++ b/src/compiler/cpp_generator.cc
@@ -1106,8 +1106,8 @@ void PrintSourceClientMethod(grpc_generator::Printer *printer,
         "const $Request$& request, "
         "::grpc::CompletionQueue* cq) {\n");
     printer->Print(*vars,
-                   "  return new "
-                   "::grpc::ClientAsyncResponseReader< $Response$>("
+                   "  return "
+                   "::grpc::ClientAsyncResponseReader< $Response$>::Create("
                    "channel_.get(), cq, "
                    "rpcmethod_$Method$_, "
                    "context, request);\n"
@@ -1129,7 +1129,7 @@ void PrintSourceClientMethod(grpc_generator::Printer *printer,
                    "::grpc::ClientContext* context, $Response$* response, "
                    "::grpc::CompletionQueue* cq, void* tag) {\n");
     printer->Print(*vars,
-                   "  return new ::grpc::ClientAsyncWriter< $Request$>("
+                   "  return ::grpc::ClientAsyncWriter< $Request$>::Create("
                    "channel_.get(), cq, "
                    "rpcmethod_$Method$_, "
                    "context, response, tag);\n"
@@ -1152,7 +1152,7 @@ void PrintSourceClientMethod(grpc_generator::Printer *printer,
                    "::grpc::ClientContext* context, const $Request$& request, "
                    "::grpc::CompletionQueue* cq, void* tag) {\n");
     printer->Print(*vars,
-                   "  return new ::grpc::ClientAsyncReader< $Response$>("
+                   "  return ::grpc::ClientAsyncReader< $Response$>::Create("
                    "channel_.get(), cq, "
                    "rpcmethod_$Method$_, "
                    "context, request, tag);\n"
@@ -1174,13 +1174,14 @@ void PrintSourceClientMethod(grpc_generator::Printer *printer,
         "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>* "
         "$ns$$Service$::Stub::Async$Method$Raw(::grpc::ClientContext* context, "
         "::grpc::CompletionQueue* cq, void* tag) {\n");
-    printer->Print(*vars,
-                   "  return new "
-                   "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>("
-                   "channel_.get(), cq, "
-                   "rpcmethod_$Method$_, "
-                   "context, tag);\n"
-                   "}\n\n");
+    printer->Print(
+        *vars,
+        "  return "
+        "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>::Create("
+        "channel_.get(), cq, "
+        "rpcmethod_$Method$_, "
+        "context, tag);\n"
+        "}\n\n");
   }
 }
 
diff --git a/src/compiler/objective_c_plugin.cc b/src/compiler/objective_c_plugin.cc
index 8de0997ebeae33f503c725219c1690570bab4c3c..5178115e44c67995241d93d5289361b59a31aff3 100644
--- a/src/compiler/objective_c_plugin.cc
+++ b/src/compiler/objective_c_plugin.cc
@@ -68,6 +68,7 @@ class ObjectiveCGrpcGenerator : public grpc::protobuf::compiler::CodeGenerator {
       ::grpc::string imports = ::grpc::string("#import \"") + file_name +
                                ".pbobjc.h\"\n\n"
                                "#import <ProtoRPC/ProtoService.h>\n"
+                               "#import <ProtoRPC/ProtoRPC.h>\n"
                                "#import <RxLibrary/GRXWriteable.h>\n"
                                "#import <RxLibrary/GRXWriter.h>\n";
 
diff --git a/src/compiler/python_generator.cc b/src/compiler/python_generator.cc
index 2649c1688d4f86a76ced143fec1458de1f9ac1d8..50ee54abffee509add8efbae16b7152d854612aa 100644
--- a/src/compiler/python_generator.cc
+++ b/src/compiler/python_generator.cc
@@ -101,6 +101,14 @@ PrivateGenerator::PrivateGenerator(const GeneratorConfiguration& config,
 void PrivateGenerator::PrintAllComments(StringVector comments,
                                         grpc_generator::Printer* out) {
   if (comments.empty()) {
+    // Python requires code structures like class and def to have
+    // a body, even if it is just "pass" or a docstring.  We need
+    // to ensure not to generate empty bodies. We could do something
+    // smarter and more sophisticated, but at the moment, if there is
+    // no docstring to print, we simply emit "pass" to ensure validity
+    // of the generated code.
+    out->Print("# missing associated documentation comment in .proto file\n");
+    out->Print("pass\n");
     return;
   }
   out->Print("\"\"\"");
diff --git a/src/core/ext/filters/client_channel/client_channel.c b/src/core/ext/filters/client_channel/client_channel.c
index 16be2c70e9531207a64156a495b994d3435bf883..0463b25412a09dfe6cdb9037106570d46b95baa2 100644
--- a/src/core/ext/filters/client_channel/client_channel.c
+++ b/src/core/ext/filters/client_channel/client_channel.c
@@ -96,17 +96,10 @@ static void method_parameters_unref(method_parameters *method_params) {
   }
 }
 
-static void *method_parameters_copy(void *value) {
-  return method_parameters_ref(value);
-}
-
 static void method_parameters_free(grpc_exec_ctx *exec_ctx, void *value) {
   method_parameters_unref(value);
 }
 
-static const grpc_slice_hash_table_vtable method_parameters_vtable = {
-    method_parameters_free, method_parameters_copy};
-
 static bool parse_wait_for_ready(grpc_json *field,
                                  wait_for_ready_value *wait_for_ready) {
   if (field->type != GRPC_JSON_TRUE && field->type != GRPC_JSON_FALSE) {
@@ -238,14 +231,23 @@ static void set_channel_connectivity_state_locked(grpc_exec_ctx *exec_ctx,
                                                   grpc_connectivity_state state,
                                                   grpc_error *error,
                                                   const char *reason) {
-  if ((state == GRPC_CHANNEL_TRANSIENT_FAILURE ||
-       state == GRPC_CHANNEL_SHUTDOWN) &&
-      chand->lb_policy != NULL) {
-    /* cancel picks with wait_for_ready=false */
-    grpc_lb_policy_cancel_picks_locked(
-        exec_ctx, chand->lb_policy,
-        /* mask= */ GRPC_INITIAL_METADATA_WAIT_FOR_READY,
-        /* check= */ 0, GRPC_ERROR_REF(error));
+  /* TODO: Improve failure handling:
+   * - Make it possible for policies to return GRPC_CHANNEL_TRANSIENT_FAILURE.
+   * - Hand over pending picks from old policies during the switch that happens
+   *   when resolver provides an update. */
+  if (chand->lb_policy != NULL) {
+    if (state == GRPC_CHANNEL_TRANSIENT_FAILURE) {
+      /* cancel picks with wait_for_ready=false */
+      grpc_lb_policy_cancel_picks_locked(
+          exec_ctx, chand->lb_policy,
+          /* mask= */ GRPC_INITIAL_METADATA_WAIT_FOR_READY,
+          /* check= */ 0, GRPC_ERROR_REF(error));
+    } else if (state == GRPC_CHANNEL_SHUTDOWN) {
+      /* cancel all picks */
+      grpc_lb_policy_cancel_picks_locked(exec_ctx, chand->lb_policy,
+                                         /* mask= */ 0, /* check= */ 0,
+                                         GRPC_ERROR_REF(error));
+    }
   }
   grpc_connectivity_state_set(exec_ctx, &chand->state_tracker, state, error,
                               reason);
@@ -348,6 +350,33 @@ static void parse_retry_throttle_params(const grpc_json *field, void *arg) {
   }
 }
 
+// Wrap a closure associated with \a lb_policy. The associated callback (\a
+// wrapped_on_pick_closure_cb) is responsible for unref'ing \a lb_policy after
+// scheduling \a wrapped_closure.
+typedef struct wrapped_on_pick_closure_arg {
+  /* the closure instance using this struct as argument */
+  grpc_closure wrapper_closure;
+
+  /* the original closure. Usually a on_complete/notify cb for pick() and ping()
+   * calls against the internal RR instance, respectively. */
+  grpc_closure *wrapped_closure;
+
+  /* The policy instance related to the closure */
+  grpc_lb_policy *lb_policy;
+} wrapped_on_pick_closure_arg;
+
+// Invoke \a arg->wrapped_closure, unref \a arg->lb_policy and free \a arg.
+static void wrapped_on_pick_closure_cb(grpc_exec_ctx *exec_ctx, void *arg,
+                                       grpc_error *error) {
+  wrapped_on_pick_closure_arg *wc_arg = arg;
+  GPR_ASSERT(wc_arg != NULL);
+  GPR_ASSERT(wc_arg->wrapped_closure != NULL);
+  GPR_ASSERT(wc_arg->lb_policy != NULL);
+  grpc_closure_run(exec_ctx, wc_arg->wrapped_closure, GRPC_ERROR_REF(error));
+  GRPC_LB_POLICY_UNREF(exec_ctx, wc_arg->lb_policy, "pick_subchannel_wrapping");
+  gpr_free(wc_arg);
+}
+
 static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
                                               void *arg, grpc_error *error) {
   channel_data *chand = arg;
@@ -371,26 +400,24 @@ static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
       GPR_ASSERT(channel_arg->type == GRPC_ARG_STRING);
       lb_policy_name = channel_arg->value.string;
     }
-    // Special case: If all of the addresses are balancer addresses,
-    // assume that we should use the grpclb policy, regardless of what the
-    // resolver actually specified.
+    // Special case: If at least one balancer address is present, we use
+    // the grpclb policy, regardless of what the resolver actually specified.
     channel_arg =
         grpc_channel_args_find(chand->resolver_result, GRPC_ARG_LB_ADDRESSES);
     if (channel_arg != NULL && channel_arg->type == GRPC_ARG_POINTER) {
       grpc_lb_addresses *addresses = channel_arg->value.pointer.p;
-      bool found_backend_address = false;
+      bool found_balancer_address = false;
       for (size_t i = 0; i < addresses->num_addresses; ++i) {
-        if (!addresses->addresses[i].is_balancer) {
-          found_backend_address = true;
+        if (addresses->addresses[i].is_balancer) {
+          found_balancer_address = true;
           break;
         }
       }
-      if (!found_backend_address) {
+      if (found_balancer_address) {
         if (lb_policy_name != NULL && strcmp(lb_policy_name, "grpclb") != 0) {
           gpr_log(GPR_INFO,
-                  "resolver requested LB policy %s but provided only balancer "
-                  "addresses, no backend addresses -- forcing use of grpclb LB "
-                  "policy",
+                  "resolver requested LB policy %s but provided at least one "
+                  "balancer address -- forcing use of grpclb LB policy",
                   lb_policy_name);
         }
         lb_policy_name = "grpclb";
@@ -436,7 +463,7 @@ static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
         grpc_uri_destroy(uri);
         method_params_table = grpc_service_config_create_method_config_table(
             exec_ctx, service_config, method_parameters_create_from_json,
-            &method_parameters_vtable);
+            method_parameters_free);
         grpc_service_config_destroy(service_config);
       }
     }
@@ -1037,11 +1064,29 @@ static bool pick_subchannel_locked(
     const grpc_lb_policy_pick_args inputs = {
         initial_metadata, initial_metadata_flags, &calld->lb_token_mdelem,
         gpr_inf_future(GPR_CLOCK_MONOTONIC)};
-    const bool result = grpc_lb_policy_pick_locked(
-        exec_ctx, lb_policy, &inputs, connected_subchannel, NULL, on_ready);
+
+    // Wrap the user-provided callback in order to hold a strong reference to
+    // the LB policy for the duration of the pick.
+    wrapped_on_pick_closure_arg *w_on_pick_arg =
+        gpr_zalloc(sizeof(*w_on_pick_arg));
+    grpc_closure_init(&w_on_pick_arg->wrapper_closure,
+                      wrapped_on_pick_closure_cb, w_on_pick_arg,
+                      grpc_schedule_on_exec_ctx);
+    w_on_pick_arg->wrapped_closure = on_ready;
+    GRPC_LB_POLICY_REF(lb_policy, "pick_subchannel_wrapping");
+    w_on_pick_arg->lb_policy = lb_policy;
+    const bool pick_done = grpc_lb_policy_pick_locked(
+        exec_ctx, lb_policy, &inputs, connected_subchannel, NULL,
+        &w_on_pick_arg->wrapper_closure);
+    if (pick_done) {
+      /* synchronous grpc_lb_policy_pick call. Unref the LB policy. */
+      GRPC_LB_POLICY_UNREF(exec_ctx, w_on_pick_arg->lb_policy,
+                           "pick_subchannel_wrapping");
+      gpr_free(w_on_pick_arg);
+    }
     GRPC_LB_POLICY_UNREF(exec_ctx, lb_policy, "pick_subchannel");
     GPR_TIMER_END("pick_subchannel", 0);
-    return result;
+    return pick_done;
   }
   if (chand->resolver != NULL && !chand->started_resolving) {
     chand->started_resolving = true;
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c
index ff8d319309820b84335476485ce6ff031f2ca9cb..ad5f0685ec3720e6600992d0721463155c6bdd1d 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c
@@ -750,18 +750,11 @@ static void destroy_balancer_name(grpc_exec_ctx *exec_ctx,
   gpr_free(balancer_name);
 }
 
-static void *copy_balancer_name(void *balancer_name) {
-  return gpr_strdup(balancer_name);
-}
-
 static grpc_slice_hash_table_entry targets_info_entry_create(
     const char *address, const char *balancer_name) {
-  static const grpc_slice_hash_table_vtable vtable = {destroy_balancer_name,
-                                                      copy_balancer_name};
   grpc_slice_hash_table_entry entry;
   entry.key = grpc_slice_from_copied_string(address);
-  entry.value = (void *)balancer_name;
-  entry.vtable = &vtable;
+  entry.value = gpr_strdup(balancer_name);
   return entry;
 }
 
@@ -825,11 +818,8 @@ static char *get_lb_uri_target_addresses(grpc_exec_ctx *exec_ctx,
                uri_path);
   gpr_free(uri_path);
 
-  *targets_info =
-      grpc_slice_hash_table_create(num_grpclb_addrs, targets_info_entries);
-  for (size_t i = 0; i < num_grpclb_addrs; i++) {
-    grpc_slice_unref_internal(exec_ctx, targets_info_entries[i].key);
-  }
+  *targets_info = grpc_slice_hash_table_create(
+      num_grpclb_addrs, targets_info_entries, destroy_balancer_name);
   gpr_free(targets_info_entries);
 
   return target_uri_str;
@@ -841,10 +831,10 @@ static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
   /* Count the number of gRPC-LB addresses. There must be at least one.
    * TODO(roth): For now, we ignore non-balancer addresses, but in the
    * future, we may change the behavior such that we fall back to using
-   * the non-balancer addresses if we cannot reach any balancers. At that
-   * time, this should be changed to allow a list with no balancer addresses,
-   * since the resolver might fail to return a balancer address even when
-   * this is the right LB policy to use. */
+   * the non-balancer addresses if we cannot reach any balancers. In the
+   * fallback case, we should use the LB policy indicated by
+   * GRPC_ARG_LB_POLICY_NAME (although if that specifies grpclb or is
+   * unset, we should default to pick_first). */
   const grpc_arg *arg =
       grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
   if (arg == NULL || arg->type != GRPC_ARG_POINTER) {
@@ -1122,6 +1112,7 @@ static void lb_call_init_locked(grpc_exec_ctx *exec_ctx,
       glb_policy->base.interested_parties,
       GRPC_MDSTR_SLASH_GRPC_DOT_LB_DOT_V1_DOT_LOADBALANCER_SLASH_BALANCELOAD,
       &host, glb_policy->deadline, NULL);
+  grpc_slice_unref_internal(exec_ctx, host);
 
   grpc_metadata_array_init(&glb_policy->lb_initial_metadata_recv);
   grpc_metadata_array_init(&glb_policy->lb_trailing_metadata_recv);
@@ -1152,7 +1143,7 @@ static void lb_call_init_locked(grpc_exec_ctx *exec_ctx,
 static void lb_call_destroy_locked(grpc_exec_ctx *exec_ctx,
                                    glb_lb_policy *glb_policy) {
   GPR_ASSERT(glb_policy->lb_call != NULL);
-  grpc_call_destroy(glb_policy->lb_call);
+  grpc_call_unref(glb_policy->lb_call);
   glb_policy->lb_call = NULL;
 
   grpc_metadata_array_destroy(&glb_policy->lb_initial_metadata_recv);
@@ -1293,6 +1284,7 @@ static void lb_on_response_received_locked(grpc_exec_ctx *exec_ctx, void *arg,
                   "Received empty server list. Picks will stay pending until a "
                   "response with > 0 servers is received");
         }
+        grpc_grpclb_destroy_serverlist(glb_policy->serverlist);
       }
     } else { /* serverlist == NULL */
       gpr_log(GPR_ERROR, "Invalid LB response received: '%s'. Ignoring.",
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c b/src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c
index e9adf98711e09b58b64b1058666e9208720f8396..fb119c7fc889e5e9f370f31fee5bfb12f93b0fbe 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c
@@ -16,6 +16,12 @@ const pb_field_t grpc_lb_v1_Duration_fields[3] = {
     PB_LAST_FIELD
 };
 
+const pb_field_t grpc_lb_v1_Timestamp_fields[3] = {
+    PB_FIELD(  1, INT64   , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_Timestamp, seconds, seconds, 0),
+    PB_FIELD(  2, INT32   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Timestamp, nanos, seconds, 0),
+    PB_LAST_FIELD
+};
+
 const pb_field_t grpc_lb_v1_LoadBalanceRequest_fields[3] = {
     PB_FIELD(  1, MESSAGE , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_LoadBalanceRequest, initial_request, initial_request, &grpc_lb_v1_InitialLoadBalanceRequest_fields),
     PB_FIELD(  2, MESSAGE , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_LoadBalanceRequest, client_stats, initial_request, &grpc_lb_v1_ClientStats_fields),
@@ -27,10 +33,14 @@ const pb_field_t grpc_lb_v1_InitialLoadBalanceRequest_fields[2] = {
     PB_LAST_FIELD
 };
 
-const pb_field_t grpc_lb_v1_ClientStats_fields[4] = {
-    PB_FIELD(  1, INT64   , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_ClientStats, total_requests, total_requests, 0),
-    PB_FIELD(  2, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, client_rpc_errors, total_requests, 0),
-    PB_FIELD(  3, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, dropped_requests, client_rpc_errors, 0),
+const pb_field_t grpc_lb_v1_ClientStats_fields[8] = {
+    PB_FIELD(  1, MESSAGE , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_ClientStats, timestamp, timestamp, &grpc_lb_v1_Timestamp_fields),
+    PB_FIELD(  2, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, num_calls_started, timestamp, 0),
+    PB_FIELD(  3, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, num_calls_finished, num_calls_started, 0),
+    PB_FIELD(  4, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, num_calls_finished_with_drop_for_rate_limiting, num_calls_finished, 0),
+    PB_FIELD(  5, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, num_calls_finished_with_drop_for_load_balancing, num_calls_finished_with_drop_for_rate_limiting, 0),
+    PB_FIELD(  6, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, num_calls_finished_with_client_failed_to_send, num_calls_finished_with_drop_for_load_balancing, 0),
+    PB_FIELD(  7, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, num_calls_finished_known_received, num_calls_finished_with_client_failed_to_send, 0),
     PB_LAST_FIELD
 };
 
@@ -52,11 +62,12 @@ const pb_field_t grpc_lb_v1_ServerList_fields[3] = {
     PB_LAST_FIELD
 };
 
-const pb_field_t grpc_lb_v1_Server_fields[5] = {
+const pb_field_t grpc_lb_v1_Server_fields[6] = {
     PB_FIELD(  1, BYTES   , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_Server, ip_address, ip_address, 0),
     PB_FIELD(  2, INT32   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Server, port, ip_address, 0),
     PB_FIELD(  3, STRING  , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Server, load_balance_token, port, 0),
-    PB_FIELD(  4, BOOL    , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Server, drop_request, load_balance_token, 0),
+    PB_FIELD(  4, BOOL    , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Server, drop_for_rate_limiting, load_balance_token, 0),
+    PB_FIELD(  5, BOOL    , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Server, drop_for_load_balancing, drop_for_rate_limiting, 0),
     PB_LAST_FIELD
 };
 
@@ -70,7 +81,7 @@ const pb_field_t grpc_lb_v1_Server_fields[5] = {
  * numbers or field sizes that are larger than what can fit in 8 or 16 bit
  * field descriptors.
  */
-PB_STATIC_ASSERT((pb_membersize(grpc_lb_v1_LoadBalanceRequest, initial_request) < 65536 && pb_membersize(grpc_lb_v1_LoadBalanceRequest, client_stats) < 65536 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, initial_response) < 65536 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, server_list) < 65536 && pb_membersize(grpc_lb_v1_InitialLoadBalanceResponse, client_stats_report_interval) < 65536 && pb_membersize(grpc_lb_v1_ServerList, servers) < 65536 && pb_membersize(grpc_lb_v1_ServerList, expiration_interval) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_grpc_lb_v1_Duration_grpc_lb_v1_LoadBalanceRequest_grpc_lb_v1_InitialLoadBalanceRequest_grpc_lb_v1_ClientStats_grpc_lb_v1_LoadBalanceResponse_grpc_lb_v1_InitialLoadBalanceResponse_grpc_lb_v1_ServerList_grpc_lb_v1_Server)
+PB_STATIC_ASSERT((pb_membersize(grpc_lb_v1_LoadBalanceRequest, initial_request) < 65536 && pb_membersize(grpc_lb_v1_LoadBalanceRequest, client_stats) < 65536 && pb_membersize(grpc_lb_v1_ClientStats, timestamp) < 65536 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, initial_response) < 65536 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, server_list) < 65536 && pb_membersize(grpc_lb_v1_InitialLoadBalanceResponse, client_stats_report_interval) < 65536 && pb_membersize(grpc_lb_v1_ServerList, servers) < 65536 && pb_membersize(grpc_lb_v1_ServerList, expiration_interval) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_grpc_lb_v1_Duration_grpc_lb_v1_Timestamp_grpc_lb_v1_LoadBalanceRequest_grpc_lb_v1_InitialLoadBalanceRequest_grpc_lb_v1_ClientStats_grpc_lb_v1_LoadBalanceResponse_grpc_lb_v1_InitialLoadBalanceResponse_grpc_lb_v1_ServerList_grpc_lb_v1_Server)
 #endif
 
 #if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
@@ -81,7 +92,7 @@ PB_STATIC_ASSERT((pb_membersize(grpc_lb_v1_LoadBalanceRequest, initial_request)
  * numbers or field sizes that are larger than what can fit in the default
  * 8 bit descriptors.
  */
-PB_STATIC_ASSERT((pb_membersize(grpc_lb_v1_LoadBalanceRequest, initial_request) < 256 && pb_membersize(grpc_lb_v1_LoadBalanceRequest, client_stats) < 256 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, initial_response) < 256 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, server_list) < 256 && pb_membersize(grpc_lb_v1_InitialLoadBalanceResponse, client_stats_report_interval) < 256 && pb_membersize(grpc_lb_v1_ServerList, servers) < 256 && pb_membersize(grpc_lb_v1_ServerList, expiration_interval) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_grpc_lb_v1_Duration_grpc_lb_v1_LoadBalanceRequest_grpc_lb_v1_InitialLoadBalanceRequest_grpc_lb_v1_ClientStats_grpc_lb_v1_LoadBalanceResponse_grpc_lb_v1_InitialLoadBalanceResponse_grpc_lb_v1_ServerList_grpc_lb_v1_Server)
+PB_STATIC_ASSERT((pb_membersize(grpc_lb_v1_LoadBalanceRequest, initial_request) < 256 && pb_membersize(grpc_lb_v1_LoadBalanceRequest, client_stats) < 256 && pb_membersize(grpc_lb_v1_ClientStats, timestamp) < 256 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, initial_response) < 256 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, server_list) < 256 && pb_membersize(grpc_lb_v1_InitialLoadBalanceResponse, client_stats_report_interval) < 256 && pb_membersize(grpc_lb_v1_ServerList, servers) < 256 && pb_membersize(grpc_lb_v1_ServerList, expiration_interval) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_grpc_lb_v1_Duration_grpc_lb_v1_Timestamp_grpc_lb_v1_LoadBalanceRequest_grpc_lb_v1_InitialLoadBalanceRequest_grpc_lb_v1_ClientStats_grpc_lb_v1_LoadBalanceResponse_grpc_lb_v1_InitialLoadBalanceResponse_grpc_lb_v1_ServerList_grpc_lb_v1_Server)
 #endif
 
 
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h b/src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h
index 725aa7e386f9384732df22e49811c12c37581a67..d3ae919ec27e345798c843dfc438659cde177557 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h
@@ -14,16 +14,6 @@ extern "C" {
 #endif
 
 /* Struct definitions */
-typedef struct _grpc_lb_v1_ClientStats {
-    bool has_total_requests;
-    int64_t total_requests;
-    bool has_client_rpc_errors;
-    int64_t client_rpc_errors;
-    bool has_dropped_requests;
-    int64_t dropped_requests;
-/* @@protoc_insertion_point(struct:grpc_lb_v1_ClientStats) */
-} grpc_lb_v1_ClientStats;
-
 typedef struct _grpc_lb_v1_Duration {
     bool has_seconds;
     int64_t seconds;
@@ -46,11 +36,39 @@ typedef struct _grpc_lb_v1_Server {
     int32_t port;
     bool has_load_balance_token;
     char load_balance_token[50];
-    bool has_drop_request;
-    bool drop_request;
+    bool has_drop_for_rate_limiting;
+    bool drop_for_rate_limiting;
+    bool has_drop_for_load_balancing;
+    bool drop_for_load_balancing;
 /* @@protoc_insertion_point(struct:grpc_lb_v1_Server) */
 } grpc_lb_v1_Server;
 
+typedef struct _grpc_lb_v1_Timestamp {
+    bool has_seconds;
+    int64_t seconds;
+    bool has_nanos;
+    int32_t nanos;
+/* @@protoc_insertion_point(struct:grpc_lb_v1_Timestamp) */
+} grpc_lb_v1_Timestamp;
+
+typedef struct _grpc_lb_v1_ClientStats {
+    bool has_timestamp;
+    grpc_lb_v1_Timestamp timestamp;
+    bool has_num_calls_started;
+    int64_t num_calls_started;
+    bool has_num_calls_finished;
+    int64_t num_calls_finished;
+    bool has_num_calls_finished_with_drop_for_rate_limiting;
+    int64_t num_calls_finished_with_drop_for_rate_limiting;
+    bool has_num_calls_finished_with_drop_for_load_balancing;
+    int64_t num_calls_finished_with_drop_for_load_balancing;
+    bool has_num_calls_finished_with_client_failed_to_send;
+    int64_t num_calls_finished_with_client_failed_to_send;
+    bool has_num_calls_finished_known_received;
+    int64_t num_calls_finished_known_received;
+/* @@protoc_insertion_point(struct:grpc_lb_v1_ClientStats) */
+} grpc_lb_v1_ClientStats;
+
 typedef struct _grpc_lb_v1_InitialLoadBalanceResponse {
     bool has_load_balancer_delegate;
     char load_balancer_delegate[64];
@@ -59,6 +77,13 @@ typedef struct _grpc_lb_v1_InitialLoadBalanceResponse {
 /* @@protoc_insertion_point(struct:grpc_lb_v1_InitialLoadBalanceResponse) */
 } grpc_lb_v1_InitialLoadBalanceResponse;
 
+typedef struct _grpc_lb_v1_ServerList {
+    pb_callback_t servers;
+    bool has_expiration_interval;
+    grpc_lb_v1_Duration expiration_interval;
+/* @@protoc_insertion_point(struct:grpc_lb_v1_ServerList) */
+} grpc_lb_v1_ServerList;
+
 typedef struct _grpc_lb_v1_LoadBalanceRequest {
     bool has_initial_request;
     grpc_lb_v1_InitialLoadBalanceRequest initial_request;
@@ -67,13 +92,6 @@ typedef struct _grpc_lb_v1_LoadBalanceRequest {
 /* @@protoc_insertion_point(struct:grpc_lb_v1_LoadBalanceRequest) */
 } grpc_lb_v1_LoadBalanceRequest;
 
-typedef struct _grpc_lb_v1_ServerList {
-    pb_callback_t servers;
-    bool has_expiration_interval;
-    grpc_lb_v1_Duration expiration_interval;
-/* @@protoc_insertion_point(struct:grpc_lb_v1_ServerList) */
-} grpc_lb_v1_ServerList;
-
 typedef struct _grpc_lb_v1_LoadBalanceResponse {
     bool has_initial_response;
     grpc_lb_v1_InitialLoadBalanceResponse initial_response;
@@ -86,61 +104,72 @@ typedef struct _grpc_lb_v1_LoadBalanceResponse {
 
 /* Initializer values for message structs */
 #define grpc_lb_v1_Duration_init_default         {false, 0, false, 0}
+#define grpc_lb_v1_Timestamp_init_default        {false, 0, false, 0}
 #define grpc_lb_v1_LoadBalanceRequest_init_default {false, grpc_lb_v1_InitialLoadBalanceRequest_init_default, false, grpc_lb_v1_ClientStats_init_default}
 #define grpc_lb_v1_InitialLoadBalanceRequest_init_default {false, ""}
-#define grpc_lb_v1_ClientStats_init_default      {false, 0, false, 0, false, 0}
+#define grpc_lb_v1_ClientStats_init_default      {false, grpc_lb_v1_Timestamp_init_default, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0}
 #define grpc_lb_v1_LoadBalanceResponse_init_default {false, grpc_lb_v1_InitialLoadBalanceResponse_init_default, false, grpc_lb_v1_ServerList_init_default}
 #define grpc_lb_v1_InitialLoadBalanceResponse_init_default {false, "", false, grpc_lb_v1_Duration_init_default}
 #define grpc_lb_v1_ServerList_init_default       {{{NULL}, NULL}, false, grpc_lb_v1_Duration_init_default}
-#define grpc_lb_v1_Server_init_default           {false, {0, {0}}, false, 0, false, "", false, 0}
+#define grpc_lb_v1_Server_init_default           {false, {0, {0}}, false, 0, false, "", false, 0, false, 0}
 #define grpc_lb_v1_Duration_init_zero            {false, 0, false, 0}
+#define grpc_lb_v1_Timestamp_init_zero           {false, 0, false, 0}
 #define grpc_lb_v1_LoadBalanceRequest_init_zero  {false, grpc_lb_v1_InitialLoadBalanceRequest_init_zero, false, grpc_lb_v1_ClientStats_init_zero}
 #define grpc_lb_v1_InitialLoadBalanceRequest_init_zero {false, ""}
-#define grpc_lb_v1_ClientStats_init_zero         {false, 0, false, 0, false, 0}
+#define grpc_lb_v1_ClientStats_init_zero         {false, grpc_lb_v1_Timestamp_init_zero, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0}
 #define grpc_lb_v1_LoadBalanceResponse_init_zero {false, grpc_lb_v1_InitialLoadBalanceResponse_init_zero, false, grpc_lb_v1_ServerList_init_zero}
 #define grpc_lb_v1_InitialLoadBalanceResponse_init_zero {false, "", false, grpc_lb_v1_Duration_init_zero}
 #define grpc_lb_v1_ServerList_init_zero          {{{NULL}, NULL}, false, grpc_lb_v1_Duration_init_zero}
-#define grpc_lb_v1_Server_init_zero              {false, {0, {0}}, false, 0, false, "", false, 0}
+#define grpc_lb_v1_Server_init_zero              {false, {0, {0}}, false, 0, false, "", false, 0, false, 0}
 
 /* Field tags (for use in manual encoding/decoding) */
-#define grpc_lb_v1_ClientStats_total_requests_tag 1
-#define grpc_lb_v1_ClientStats_client_rpc_errors_tag 2
-#define grpc_lb_v1_ClientStats_dropped_requests_tag 3
 #define grpc_lb_v1_Duration_seconds_tag          1
 #define grpc_lb_v1_Duration_nanos_tag            2
 #define grpc_lb_v1_InitialLoadBalanceRequest_name_tag 1
 #define grpc_lb_v1_Server_ip_address_tag         1
 #define grpc_lb_v1_Server_port_tag               2
 #define grpc_lb_v1_Server_load_balance_token_tag 3
-#define grpc_lb_v1_Server_drop_request_tag       4
+#define grpc_lb_v1_Server_drop_for_rate_limiting_tag 4
+#define grpc_lb_v1_Server_drop_for_load_balancing_tag 5
+#define grpc_lb_v1_Timestamp_seconds_tag         1
+#define grpc_lb_v1_Timestamp_nanos_tag           2
+#define grpc_lb_v1_ClientStats_timestamp_tag     1
+#define grpc_lb_v1_ClientStats_num_calls_started_tag 2
+#define grpc_lb_v1_ClientStats_num_calls_finished_tag 3
+#define grpc_lb_v1_ClientStats_num_calls_finished_with_drop_for_rate_limiting_tag 4
+#define grpc_lb_v1_ClientStats_num_calls_finished_with_drop_for_load_balancing_tag 5
+#define grpc_lb_v1_ClientStats_num_calls_finished_with_client_failed_to_send_tag 6
+#define grpc_lb_v1_ClientStats_num_calls_finished_known_received_tag 7
 #define grpc_lb_v1_InitialLoadBalanceResponse_load_balancer_delegate_tag 1
 #define grpc_lb_v1_InitialLoadBalanceResponse_client_stats_report_interval_tag 2
-#define grpc_lb_v1_LoadBalanceRequest_initial_request_tag 1
-#define grpc_lb_v1_LoadBalanceRequest_client_stats_tag 2
 #define grpc_lb_v1_ServerList_servers_tag        1
 #define grpc_lb_v1_ServerList_expiration_interval_tag 3
+#define grpc_lb_v1_LoadBalanceRequest_initial_request_tag 1
+#define grpc_lb_v1_LoadBalanceRequest_client_stats_tag 2
 #define grpc_lb_v1_LoadBalanceResponse_initial_response_tag 1
 #define grpc_lb_v1_LoadBalanceResponse_server_list_tag 2
 
 /* Struct field encoding specification for nanopb */
 extern const pb_field_t grpc_lb_v1_Duration_fields[3];
+extern const pb_field_t grpc_lb_v1_Timestamp_fields[3];
 extern const pb_field_t grpc_lb_v1_LoadBalanceRequest_fields[3];
 extern const pb_field_t grpc_lb_v1_InitialLoadBalanceRequest_fields[2];
-extern const pb_field_t grpc_lb_v1_ClientStats_fields[4];
+extern const pb_field_t grpc_lb_v1_ClientStats_fields[8];
 extern const pb_field_t grpc_lb_v1_LoadBalanceResponse_fields[3];
 extern const pb_field_t grpc_lb_v1_InitialLoadBalanceResponse_fields[3];
 extern const pb_field_t grpc_lb_v1_ServerList_fields[3];
-extern const pb_field_t grpc_lb_v1_Server_fields[5];
+extern const pb_field_t grpc_lb_v1_Server_fields[6];
 
 /* Maximum encoded size of messages (where known) */
 #define grpc_lb_v1_Duration_size                 22
-#define grpc_lb_v1_LoadBalanceRequest_size       169
+#define grpc_lb_v1_Timestamp_size                22
+#define grpc_lb_v1_LoadBalanceRequest_size       226
 #define grpc_lb_v1_InitialLoadBalanceRequest_size 131
-#define grpc_lb_v1_ClientStats_size              33
+#define grpc_lb_v1_ClientStats_size              90
 #define grpc_lb_v1_LoadBalanceResponse_size      (98 + grpc_lb_v1_ServerList_size)
 #define grpc_lb_v1_InitialLoadBalanceResponse_size 90
 /* grpc_lb_v1_ServerList_size depends on runtime parameters */
-#define grpc_lb_v1_Server_size                   83
+#define grpc_lb_v1_Server_size                   85
 
 /* Message IDs (where set with "msgid" option) */
 #ifdef PB_MSGID
diff --git a/src/core/ext/filters/client_channel/lb_policy_factory.c b/src/core/ext/filters/client_channel/lb_policy_factory.c
index e2af216b8996ced334024cf98bcd571a9e97d829..89b8bf895155d260098bf5222d1c89c426ffe9be 100644
--- a/src/core/ext/filters/client_channel/lb_policy_factory.c
+++ b/src/core/ext/filters/client_channel/lb_policy_factory.c
@@ -36,16 +36,18 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/channel/channel_args.h"
+
 #include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/parse_address.h"
 
 grpc_lb_addresses* grpc_lb_addresses_create(
     size_t num_addresses, const grpc_lb_user_data_vtable* user_data_vtable) {
-  grpc_lb_addresses* addresses = gpr_malloc(sizeof(grpc_lb_addresses));
+  grpc_lb_addresses* addresses = gpr_zalloc(sizeof(grpc_lb_addresses));
   addresses->num_addresses = num_addresses;
   addresses->user_data_vtable = user_data_vtable;
   const size_t addresses_size = sizeof(grpc_lb_address) * num_addresses;
-  addresses->addresses = gpr_malloc(addresses_size);
-  memset(addresses->addresses, 0, addresses_size);
+  addresses->addresses = gpr_zalloc(addresses_size);
   return addresses;
 }
 
@@ -69,7 +71,7 @@ grpc_lb_addresses* grpc_lb_addresses_copy(const grpc_lb_addresses* addresses) {
 
 void grpc_lb_addresses_set_address(grpc_lb_addresses* addresses, size_t index,
                                    void* address, size_t address_len,
-                                   bool is_balancer, char* balancer_name,
+                                   bool is_balancer, const char* balancer_name,
                                    void* user_data) {
   GPR_ASSERT(index < addresses->num_addresses);
   if (user_data != NULL) GPR_ASSERT(addresses->user_data_vtable != NULL);
@@ -77,10 +79,22 @@ void grpc_lb_addresses_set_address(grpc_lb_addresses* addresses, size_t index,
   memcpy(target->address.addr, address, address_len);
   target->address.len = address_len;
   target->is_balancer = is_balancer;
-  target->balancer_name = balancer_name;
+  target->balancer_name = gpr_strdup(balancer_name);
   target->user_data = user_data;
 }
 
+bool grpc_lb_addresses_set_address_from_uri(grpc_lb_addresses* addresses,
+                                            size_t index, const grpc_uri* uri,
+                                            bool is_balancer,
+                                            const char* balancer_name,
+                                            void* user_data) {
+  grpc_resolved_address address;
+  if (!grpc_parse_uri(uri, &address)) return false;
+  grpc_lb_addresses_set_address(addresses, index, address.addr, address.len,
+                                is_balancer, balancer_name, user_data);
+  return true;
+}
+
 int grpc_lb_addresses_cmp(const grpc_lb_addresses* addresses1,
                           const grpc_lb_addresses* addresses2) {
   if (addresses1->num_addresses > addresses2->num_addresses) return 1;
@@ -147,6 +161,15 @@ grpc_arg grpc_lb_addresses_create_channel_arg(
   return arg;
 }
 
+grpc_lb_addresses* grpc_lb_addresses_find_channel_arg(
+    const grpc_channel_args* channel_args) {
+  const grpc_arg* lb_addresses_arg =
+      grpc_channel_args_find(channel_args, GRPC_ARG_LB_ADDRESSES);
+  if (lb_addresses_arg == NULL || lb_addresses_arg->type != GRPC_ARG_POINTER)
+    return NULL;
+  return lb_addresses_arg->value.pointer.p;
+}
+
 void grpc_lb_policy_factory_ref(grpc_lb_policy_factory* factory) {
   factory->vtable->ref(factory);
 }
diff --git a/src/core/ext/filters/client_channel/lb_policy_factory.h b/src/core/ext/filters/client_channel/lb_policy_factory.h
index 81ab12ec8f96da4d6de70bccb7da8047dba4f42f..9d6c0fc1398c35150a31ed479e91515c73ac176d 100644
--- a/src/core/ext/filters/client_channel/lb_policy_factory.h
+++ b/src/core/ext/filters/client_channel/lb_policy_factory.h
@@ -34,12 +34,13 @@
 #ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_FACTORY_H
 #define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_FACTORY_H
 
-#include "src/core/ext/filters/client_channel/client_channel_factory.h"
-#include "src/core/ext/filters/client_channel/lb_policy.h"
-
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 
+#include "src/core/ext/filters/client_channel/client_channel_factory.h"
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/ext/filters/client_channel/uri_parser.h"
+
 // Channel arg key for grpc_lb_addresses.
 #define GRPC_ARG_LB_ADDRESSES "grpc.lb_addresses"
 
@@ -88,9 +89,18 @@ grpc_lb_addresses *grpc_lb_addresses_copy(const grpc_lb_addresses *addresses);
  * Takes ownership of \a balancer_name. */
 void grpc_lb_addresses_set_address(grpc_lb_addresses *addresses, size_t index,
                                    void *address, size_t address_len,
-                                   bool is_balancer, char *balancer_name,
+                                   bool is_balancer, const char *balancer_name,
                                    void *user_data);
 
+/** Sets the value of the address at index \a index of \a addresses from \a uri.
+ * Returns true upon success, false otherwise. Takes ownership of \a
+ * balancer_name. */
+bool grpc_lb_addresses_set_address_from_uri(grpc_lb_addresses *addresses,
+                                            size_t index, const grpc_uri *uri,
+                                            bool is_balancer,
+                                            const char *balancer_name,
+                                            void *user_data);
+
 /** Compares \a addresses1 and \a addresses2. */
 int grpc_lb_addresses_cmp(const grpc_lb_addresses *addresses1,
                           const grpc_lb_addresses *addresses2);
@@ -103,6 +113,10 @@ void grpc_lb_addresses_destroy(grpc_exec_ctx *exec_ctx,
 grpc_arg grpc_lb_addresses_create_channel_arg(
     const grpc_lb_addresses *addresses);
 
+/** Returns the \a grpc_lb_addresses instance in \a channel_args or NULL */
+grpc_lb_addresses *grpc_lb_addresses_find_channel_arg(
+    const grpc_channel_args *channel_args);
+
 /** Arguments passed to LB policies. */
 typedef struct grpc_lb_policy_args {
   grpc_client_channel_factory *client_channel_factory;
diff --git a/src/core/ext/filters/client_channel/parse_address.c b/src/core/ext/filters/client_channel/parse_address.c
index 0c970620756bdcf6655e9d49d743d70a61477c78..edc6ce697d858516357d204830c38cd2bb3cec0f 100644
--- a/src/core/ext/filters/client_channel/parse_address.c
+++ b/src/core/ext/filters/client_channel/parse_address.c
@@ -48,7 +48,12 @@
 
 #ifdef GRPC_HAVE_UNIX_SOCKET
 
-int parse_unix(grpc_uri *uri, grpc_resolved_address *resolved_addr) {
+bool grpc_parse_unix(const grpc_uri *uri,
+                     grpc_resolved_address *resolved_addr) {
+  if (strcmp("unix", uri->scheme) != 0) {
+    gpr_log(GPR_ERROR, "Expected 'unix' scheme, got '%s'", uri->scheme);
+    return false;
+  }
   struct sockaddr_un *un = (struct sockaddr_un *)resolved_addr->addr;
   const size_t maxlen = sizeof(un->sun_path);
   const size_t path_len = strnlen(uri->path, maxlen);
@@ -61,21 +66,29 @@ int parse_unix(grpc_uri *uri, grpc_resolved_address *resolved_addr) {
 
 #else /* GRPC_HAVE_UNIX_SOCKET */
 
-int parse_unix(grpc_uri *uri, grpc_resolved_address *resolved_addr) { abort(); }
+bool grpc_parse_unix(const grpc_uri *uri,
+                     grpc_resolved_address *resolved_addr) {
+  abort();
+}
 
 #endif /* GRPC_HAVE_UNIX_SOCKET */
 
-int parse_ipv4(grpc_uri *uri, grpc_resolved_address *resolved_addr) {
+bool grpc_parse_ipv4(const grpc_uri *uri,
+                     grpc_resolved_address *resolved_addr) {
+  if (strcmp("ipv4", uri->scheme) != 0) {
+    gpr_log(GPR_ERROR, "Expected 'ipv4' scheme, got '%s'", uri->scheme);
+    return false;
+  }
   const char *host_port = uri->path;
   char *host;
   char *port;
   int port_num;
-  int result = 0;
+  bool result = false;
   struct sockaddr_in *in = (struct sockaddr_in *)resolved_addr->addr;
 
   if (*host_port == '/') ++host_port;
   if (!gpr_split_host_port(host_port, &host, &port)) {
-    return 0;
+    return false;
   }
 
   memset(resolved_addr, 0, sizeof(grpc_resolved_address));
@@ -98,14 +111,19 @@ int parse_ipv4(grpc_uri *uri, grpc_resolved_address *resolved_addr) {
     goto done;
   }
 
-  result = 1;
+  result = true;
 done:
   gpr_free(host);
   gpr_free(port);
   return result;
 }
 
-int parse_ipv6(grpc_uri *uri, grpc_resolved_address *resolved_addr) {
+bool grpc_parse_ipv6(const grpc_uri *uri,
+                     grpc_resolved_address *resolved_addr) {
+  if (strcmp("ipv6", uri->scheme) != 0) {
+    gpr_log(GPR_ERROR, "Expected 'ipv6' scheme, got '%s'", uri->scheme);
+    return false;
+  }
   const char *host_port = uri->path;
   char *host;
   char *port;
@@ -168,3 +186,15 @@ done:
   gpr_free(port);
   return result;
 }
+
+bool grpc_parse_uri(const grpc_uri *uri, grpc_resolved_address *resolved_addr) {
+  if (strcmp("unix", uri->scheme) == 0) {
+    return grpc_parse_unix(uri, resolved_addr);
+  } else if (strcmp("ipv4", uri->scheme) == 0) {
+    return grpc_parse_ipv4(uri, resolved_addr);
+  } else if (strcmp("ipv6", uri->scheme) == 0) {
+    return grpc_parse_ipv6(uri, resolved_addr);
+  }
+  gpr_log(GPR_ERROR, "Can't parse scheme '%s'", uri->scheme);
+  return false;
+}
diff --git a/src/core/ext/filters/client_channel/parse_address.h b/src/core/ext/filters/client_channel/parse_address.h
index c8d77baa008892873278e496d48839c72fbf452a..fa7ea33a00baedccf5165667493f126c2554e530 100644
--- a/src/core/ext/filters/client_channel/parse_address.h
+++ b/src/core/ext/filters/client_channel/parse_address.h
@@ -39,16 +39,19 @@
 #include "src/core/ext/filters/client_channel/uri_parser.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 
-/** Populate \a addr and \a len from \a uri, whose path is expected to contain a
+/** Populate \a resolved_addr from \a uri, whose path is expected to contain a
  * unix socket path. Returns true upon success. */
-int parse_unix(grpc_uri *uri, grpc_resolved_address *resolved_addr);
+bool grpc_parse_unix(const grpc_uri *uri, grpc_resolved_address *resolved_addr);
 
-/** Populate /a addr and \a len from \a uri, whose path is expected to contain a
- * host:port pair. Returns true upon success. */
-int parse_ipv4(grpc_uri *uri, grpc_resolved_address *resolved_addr);
+/** Populate \a resolved_addr from \a uri, whose path is expected to contain an
+ * IPv4 host:port pair. Returns true upon success. */
+bool grpc_parse_ipv4(const grpc_uri *uri, grpc_resolved_address *resolved_addr);
 
-/** Populate /a addr and \a len from \a uri, whose path is expected to contain a
- * host:port pair. Returns true upon success. */
-int parse_ipv6(grpc_uri *uri, grpc_resolved_address *resolved_addr);
+/** Populate \a resolved_addr from \a uri, whose path is expected to contain an
+ * IPv6 host:port pair. Returns true upon success. */
+bool grpc_parse_ipv6(const grpc_uri *uri, grpc_resolved_address *resolved_addr);
+
+/** Populate \a resolved_addr from \a uri. Returns true upon success. */
+bool grpc_parse_uri(const grpc_uri *uri, grpc_resolved_address *resolved_addr);
 
 #endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PARSE_ADDRESS_H */
diff --git a/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c b/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c
index 54f020d6914104f5f6c13b181e8be5f044c77b6f..4d7d878c2371f531b121e647b886a60cad5bedb6 100644
--- a/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c
+++ b/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c
@@ -157,8 +157,8 @@ static void do_nothing(void *ignored) {}
 
 static grpc_resolver *sockaddr_create(grpc_exec_ctx *exec_ctx,
                                       grpc_resolver_args *args,
-                                      int parse(grpc_uri *uri,
-                                                grpc_resolved_address *dst)) {
+                                      bool parse(const grpc_uri *uri,
+                                                 grpc_resolved_address *dst)) {
   if (0 != strcmp(args->uri->authority, "")) {
     gpr_log(GPR_ERROR, "authority based uri's not supported by the %s scheme",
             args->uri->scheme);
@@ -209,7 +209,7 @@ static void sockaddr_factory_unref(grpc_resolver_factory *factory) {}
   static grpc_resolver *name##_factory_create_resolver(                     \
       grpc_exec_ctx *exec_ctx, grpc_resolver_factory *factory,              \
       grpc_resolver_args *args) {                                           \
-    return sockaddr_create(exec_ctx, args, parse_##name);                   \
+    return sockaddr_create(exec_ctx, args, grpc_parse_##name);              \
   }                                                                         \
   static const grpc_resolver_factory_vtable name##_factory_vtable = {       \
       sockaddr_factory_ref, sockaddr_factory_unref,                         \
diff --git a/src/core/ext/filters/client_channel/subchannel.c b/src/core/ext/filters/client_channel/subchannel.c
index 9a7a7a0ee5f69112f59f752771c725ae9d5de797..967e571221c3c9051c697f62823e41a4daf2fc67 100644
--- a/src/core/ext/filters/client_channel/subchannel.c
+++ b/src/core/ext/filters/client_channel/subchannel.c
@@ -59,9 +59,9 @@
 #define INTERNAL_REF_BITS 16
 #define STRONG_REF_MASK (~(gpr_atm)((1 << INTERNAL_REF_BITS) - 1))
 
-#define GRPC_SUBCHANNEL_MIN_CONNECT_TIMEOUT_SECONDS 20
 #define GRPC_SUBCHANNEL_INITIAL_CONNECT_BACKOFF_SECONDS 1
 #define GRPC_SUBCHANNEL_RECONNECT_BACKOFF_MULTIPLIER 1.6
+#define GRPC_SUBCHANNEL_RECONNECT_MIN_BACKOFF_SECONDS 20
 #define GRPC_SUBCHANNEL_RECONNECT_MAX_BACKOFF_SECONDS 120
 #define GRPC_SUBCHANNEL_RECONNECT_JITTER 0.2
 
@@ -353,8 +353,8 @@ grpc_subchannel *grpc_subchannel_create(grpc_exec_ctx *exec_ctx,
                                "subchannel");
   int initial_backoff_ms =
       GRPC_SUBCHANNEL_INITIAL_CONNECT_BACKOFF_SECONDS * 1000;
+  int min_backoff_ms = GRPC_SUBCHANNEL_RECONNECT_MIN_BACKOFF_SECONDS * 1000;
   int max_backoff_ms = GRPC_SUBCHANNEL_RECONNECT_MAX_BACKOFF_SECONDS * 1000;
-  int min_backoff_ms = GRPC_SUBCHANNEL_MIN_CONNECT_TIMEOUT_SECONDS * 1000;
   bool fixed_reconnect_backoff = false;
   if (c->args) {
     for (size_t i = 0; i < c->args->num_args; i++) {
@@ -365,6 +365,12 @@ grpc_subchannel *grpc_subchannel_create(grpc_exec_ctx *exec_ctx,
             grpc_channel_arg_get_integer(
                 &c->args->args[i],
                 (grpc_integer_options){initial_backoff_ms, 100, INT_MAX});
+      } else if (0 == strcmp(c->args->args[i].key,
+                             GRPC_ARG_MIN_RECONNECT_BACKOFF_MS)) {
+        fixed_reconnect_backoff = false;
+        min_backoff_ms = grpc_channel_arg_get_integer(
+            &c->args->args[i],
+            (grpc_integer_options){min_backoff_ms, 100, INT_MAX});
       } else if (0 == strcmp(c->args->args[i].key,
                              GRPC_ARG_MAX_RECONNECT_BACKOFF_MS)) {
         fixed_reconnect_backoff = false;
@@ -797,13 +803,7 @@ static void grpc_uri_to_sockaddr(grpc_exec_ctx *exec_ctx, const char *uri_str,
                                  grpc_resolved_address *addr) {
   grpc_uri *uri = grpc_uri_parse(exec_ctx, uri_str, 0 /* suppress_errors */);
   GPR_ASSERT(uri != NULL);
-  if (strcmp(uri->scheme, "ipv4") == 0) {
-    GPR_ASSERT(parse_ipv4(uri, addr));
-  } else if (strcmp(uri->scheme, "ipv6") == 0) {
-    GPR_ASSERT(parse_ipv6(uri, addr));
-  } else {
-    GPR_ASSERT(parse_unix(uri, addr));
-  }
+  if (!grpc_parse_uri(uri, addr)) memset(addr, 0, sizeof(*addr));
   grpc_uri_destroy(uri);
 }
 
diff --git a/src/core/ext/filters/client_channel/uri_parser.c b/src/core/ext/filters/client_channel/uri_parser.c
index f28db59e27066ad2e4a99850df107eae886b9a91..b233d835cbc25814d905c5266d9cf92b73181d29 100644
--- a/src/core/ext/filters/client_channel/uri_parser.c
+++ b/src/core/ext/filters/client_channel/uri_parser.c
@@ -50,7 +50,7 @@
 #define NOT_SET (~(size_t)0)
 
 static grpc_uri *bad_uri(const char *uri_text, size_t pos, const char *section,
-                         int suppress_errors) {
+                         bool suppress_errors) {
   char *line_prefix;
   size_t pfx_len;
 
@@ -197,7 +197,7 @@ static void parse_query_parts(grpc_uri *uri) {
 }
 
 grpc_uri *grpc_uri_parse(grpc_exec_ctx *exec_ctx, const char *uri_text,
-                         int suppress_errors) {
+                         bool suppress_errors) {
   grpc_uri *uri;
   size_t scheme_begin = 0;
   size_t scheme_end = NOT_SET;
diff --git a/src/core/ext/filters/client_channel/uri_parser.h b/src/core/ext/filters/client_channel/uri_parser.h
index 2698d448d8ea7fe08172f2b9b5c644cc44e4c118..b889040b167f37ff2873cf5ad14678e953d3ad3e 100644
--- a/src/core/ext/filters/client_channel/uri_parser.h
+++ b/src/core/ext/filters/client_channel/uri_parser.h
@@ -53,7 +53,7 @@ typedef struct {
 
 /** parse a uri, return NULL on failure */
 grpc_uri *grpc_uri_parse(grpc_exec_ctx *exec_ctx, const char *uri_text,
-                         int suppress_errors);
+                         bool suppress_errors);
 
 /** return the part of a query string after the '=' in "?key=xxx&...", or NULL
  * if key is not present */
diff --git a/src/core/ext/filters/http/message_compress/message_compress_filter.c b/src/core/ext/filters/http/message_compress/message_compress_filter.c
index f414a60eee47e40c68aa709c1ccc3b44f38edb48..4f5f41e9b04a2904e2fab7c297c14992517a343a 100644
--- a/src/core/ext/filters/http/message_compress/message_compress_filter.c
+++ b/src/core/ext/filters/http/message_compress/message_compress_filter.c
@@ -49,8 +49,6 @@
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 
-int grpc_compression_trace = 0;
-
 #define INITIAL_METADATA_UNSEEN 0
 #define HAS_COMPRESSION_ALGORITHM 2
 #define NO_COMPRESSION_ALGORITHM 4
diff --git a/src/core/ext/filters/load_reporting/load_reporting.c b/src/core/ext/filters/load_reporting/load_reporting.c
index 3b5d2103c1f9dc4f3cd05e721ba1c32cba09a162..4e9d0937ae0f7bd59b9a67715725d0a2fde8583a 100644
--- a/src/core/ext/filters/load_reporting/load_reporting.c
+++ b/src/core/ext/filters/load_reporting/load_reporting.c
@@ -47,23 +47,6 @@
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/surface/channel_init.h"
 
-static void destroy_lr_cost_context(void *c) {
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_load_reporting_cost_context *cost_ctx = c;
-  for (size_t i = 0; i < cost_ctx->values_count; ++i) {
-    grpc_slice_unref_internal(&exec_ctx, cost_ctx->values[i]);
-  }
-  grpc_exec_ctx_finish(&exec_ctx);
-  gpr_free(cost_ctx->values);
-  gpr_free(cost_ctx);
-}
-
-void grpc_call_set_load_reporting_cost_context(
-    grpc_call *call, grpc_load_reporting_cost_context *ctx) {
-  grpc_call_context_set(call, GRPC_CONTEXT_LR_COST, ctx,
-                        destroy_lr_cost_context);
-}
-
 static bool is_load_reporting_enabled(const grpc_channel_args *a) {
   return grpc_channel_arg_get_bool(
       grpc_channel_args_find(a, GRPC_ARG_ENABLE_LOAD_REPORTING), false);
diff --git a/src/core/ext/filters/load_reporting/load_reporting_filter.c b/src/core/ext/filters/load_reporting/load_reporting_filter.c
index 57b25d06518f2827eaa7d7dea5dc9b0d5147532c..75a9a566871cacc1e3cb1a6aee739f9d59d61493 100644
--- a/src/core/ext/filters/load_reporting/load_reporting_filter.c
+++ b/src/core/ext/filters/load_reporting/load_reporting_filter.c
@@ -48,6 +48,8 @@
 
 typedef struct call_data {
   intptr_t id; /**< an id unique to the call */
+  bool have_trailing_md_string;
+  grpc_slice trailing_md_string;
   bool have_initial_md_string;
   grpc_slice initial_md_string;
   bool have_service_method;
@@ -140,6 +142,9 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
   if (calld->have_initial_md_string) {
     grpc_slice_unref_internal(exec_ctx, calld->initial_md_string);
   }
+  if (calld->have_trailing_md_string) {
+    grpc_slice_unref_internal(exec_ctx, calld->trailing_md_string);
+  }
   if (calld->have_service_method) {
     grpc_slice_unref_internal(exec_ctx, calld->service_method);
   }
@@ -183,6 +188,18 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   */
 }
 
+static grpc_filtered_mdelem lr_trailing_md_filter(grpc_exec_ctx *exec_ctx,
+                                                  void *user_data,
+                                                  grpc_mdelem md) {
+  grpc_call_element *elem = user_data;
+  call_data *calld = elem->call_data;
+  if (grpc_slice_eq(GRPC_MDKEY(md), GRPC_MDSTR_LB_COST_BIN)) {
+    calld->trailing_md_string = GRPC_MDVALUE(md);
+    return GRPC_FILTERED_REMOVE();
+  }
+  return GRPC_FILTERED_MDELEM(md);
+}
+
 static void lr_start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_transport_stream_op_batch *op) {
@@ -190,13 +207,21 @@ static void lr_start_transport_stream_op_batch(
   call_data *calld = elem->call_data;
 
   if (op->recv_initial_metadata) {
+    /* substitute our callback for the higher callback */
     calld->recv_initial_metadata =
         op->payload->recv_initial_metadata.recv_initial_metadata;
-    /* substitute our callback for the higher callback */
     calld->ops_recv_initial_metadata_ready =
         op->payload->recv_initial_metadata.recv_initial_metadata_ready;
     op->payload->recv_initial_metadata.recv_initial_metadata_ready =
         &calld->on_initial_md_ready;
+  } else if (op->send_trailing_metadata) {
+    GRPC_LOG_IF_ERROR(
+        "grpc_metadata_batch_filter",
+        grpc_metadata_batch_filter(
+            exec_ctx,
+            op->payload->send_trailing_metadata.send_trailing_metadata,
+            lr_trailing_md_filter, elem,
+            "LR trailing metadata filtering error"));
   }
   grpc_call_next_op(exec_ctx, elem, op);
 
diff --git a/src/core/ext/filters/message_size/message_size_filter.c b/src/core/ext/filters/message_size/message_size_filter.c
index db0f0119053970d03c953ca02126f9e8ca45ab61..b615116965ff8f1ce9fcb64e300250c5f356fe9f 100644
--- a/src/core/ext/filters/message_size/message_size_filter.c
+++ b/src/core/ext/filters/message_size/message_size_filter.c
@@ -50,19 +50,10 @@ typedef struct message_size_limits {
   int max_recv_size;
 } message_size_limits;
 
-static void* message_size_limits_copy(void* value) {
-  void* new_value = gpr_malloc(sizeof(message_size_limits));
-  memcpy(new_value, value, sizeof(message_size_limits));
-  return new_value;
-}
-
 static void message_size_limits_free(grpc_exec_ctx* exec_ctx, void* value) {
   gpr_free(value);
 }
 
-static const grpc_slice_hash_table_vtable message_size_limits_vtable = {
-    message_size_limits_free, message_size_limits_copy};
-
 static void* message_size_limits_create_from_json(const grpc_json* json) {
   int max_request_message_bytes = -1;
   int max_response_message_bytes = -1;
@@ -130,6 +121,8 @@ static void recv_message_ready(grpc_exec_ctx* exec_ctx, void* user_data,
       GRPC_ERROR_UNREF(new_error);
     }
     gpr_free(message_string);
+  } else {
+    GRPC_ERROR_REF(error);
   }
   // Invoke the next callback.
   grpc_closure_run(exec_ctx, calld->next_recv_message_ready, error);
@@ -255,7 +248,7 @@ static grpc_error* init_channel_elem(grpc_exec_ctx* exec_ctx,
       chand->method_limit_table =
           grpc_service_config_create_method_config_table(
               exec_ctx, service_config, message_size_limits_create_from_json,
-              &message_size_limits_vtable);
+              message_size_limits_free);
       grpc_service_config_destroy(service_config);
     }
   }
diff --git a/src/core/ext/transport/chttp2/server/chttp2_server.c b/src/core/ext/transport/chttp2/server/chttp2_server.c
index b463506a98fe06dbd30bbeeec80d1242893c5ba9..b9c62c376a1fc079d6e8b12b9a3c6606fb5b723e 100644
--- a/src/core/ext/transport/chttp2/server/chttp2_server.c
+++ b/src/core/ext/transport/chttp2/server/chttp2_server.c
@@ -80,7 +80,7 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
   gpr_mu_lock(&connection_state->server_state->mu);
   if (error != GRPC_ERROR_NONE || connection_state->server_state->shutdown) {
     const char *error_str = grpc_error_string(error);
-    gpr_log(GPR_ERROR, "Handshaking failed: %s", error_str);
+    gpr_log(GPR_DEBUG, "Handshaking failed: %s", error_str);
 
     if (error == GRPC_ERROR_NONE && args->endpoint != NULL) {
       // We were shut down after handshaking completed successfully, so
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.c b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
index 9269611dd9dd2806cdb5770f87b3a274a0bfefd9..5d74532edebe84c04a3ca1bd07e9ae74bd209269 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.c
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
@@ -1679,7 +1679,7 @@ void grpc_chttp2_maybe_complete_recv_message(grpc_exec_ctx *exec_ctx,
           grpc_slice_buffer_swap(&s->unprocessed_incoming_frames_buffer,
                                  &s->frame_storage);
         }
-        error = deframe_unprocessed_incoming_frames(
+        error = grpc_deframe_unprocessed_incoming_frames(
             exec_ctx, &s->data_parser, s,
             &s->unprocessed_incoming_frames_buffer, NULL, s->recv_message);
         if (error != GRPC_ERROR_NONE) {
@@ -2150,6 +2150,7 @@ static void update_bdp(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
             (int)bdp);
   }
   push_setting(exec_ctx, t, GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, bdp);
+  push_setting(exec_ctx, t, GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE, bdp);
 }
 
 static grpc_error *try_http_parsing(grpc_exec_ctx *exec_ctx,
@@ -2602,6 +2603,7 @@ static bool incoming_byte_stream_next(grpc_exec_ctx *exec_ctx,
       (grpc_chttp2_incoming_byte_stream *)byte_stream;
   grpc_chttp2_stream *s = bs->stream;
   if (s->unprocessed_incoming_frames_buffer.length > 0) {
+    GPR_TIMER_END("incoming_byte_stream_next", 0);
     return true;
   } else {
     gpr_ref(&bs->refs);
@@ -2627,7 +2629,7 @@ static grpc_error *incoming_byte_stream_pull(grpc_exec_ctx *exec_ctx,
   grpc_chttp2_stream *s = bs->stream;
 
   if (s->unprocessed_incoming_frames_buffer.length > 0) {
-    grpc_error *error = deframe_unprocessed_incoming_frames(
+    grpc_error *error = grpc_deframe_unprocessed_incoming_frames(
         exec_ctx, &s->data_parser, s, &s->unprocessed_incoming_frames_buffer,
         slice, NULL);
     if (error != GRPC_ERROR_NONE) {
diff --git a/src/core/ext/transport/chttp2/transport/frame_data.c b/src/core/ext/transport/chttp2/transport/frame_data.c
index 5d382d80a8b7e6bec3719d0a827004ae8d6d9304..9aba3ea445d59a46e7df81d8fff2bfe192861428 100644
--- a/src/core/ext/transport/chttp2/transport/frame_data.c
+++ b/src/core/ext/transport/chttp2/transport/frame_data.c
@@ -112,12 +112,10 @@ void grpc_chttp2_encode_data(uint32_t id, grpc_slice_buffer *inbuf,
   stats->data_bytes += write_bytes;
 }
 
-grpc_error *deframe_unprocessed_incoming_frames(grpc_exec_ctx *exec_ctx,
-                                                grpc_chttp2_data_parser *p,
-                                                grpc_chttp2_stream *s,
-                                                grpc_slice_buffer *slices,
-                                                grpc_slice *slice_out,
-                                                grpc_byte_stream **stream_out) {
+grpc_error *grpc_deframe_unprocessed_incoming_frames(
+    grpc_exec_ctx *exec_ctx, grpc_chttp2_data_parser *p, grpc_chttp2_stream *s,
+    grpc_slice_buffer *slices, grpc_slice *slice_out,
+    grpc_byte_stream **stream_out) {
   grpc_error *error = GRPC_ERROR_NONE;
   grpc_chttp2_transport *t = s->t;
 
diff --git a/src/core/ext/transport/chttp2/transport/frame_data.h b/src/core/ext/transport/chttp2/transport/frame_data.h
index 2fb8983c38e6797641b625fb3ee2a84cd35f93a3..9ed4ad0f2184121fe638437b49f077ad0f2f36b9 100644
--- a/src/core/ext/transport/chttp2/transport/frame_data.h
+++ b/src/core/ext/transport/chttp2/transport/frame_data.h
@@ -90,11 +90,9 @@ void grpc_chttp2_encode_data(uint32_t id, grpc_slice_buffer *inbuf,
                              grpc_transport_one_way_stats *stats,
                              grpc_slice_buffer *outbuf);
 
-grpc_error *deframe_unprocessed_incoming_frames(grpc_exec_ctx *exec_ctx,
-                                                grpc_chttp2_data_parser *p,
-                                                grpc_chttp2_stream *s,
-                                                grpc_slice_buffer *slices,
-                                                grpc_slice *slice_out,
-                                                grpc_byte_stream **stream_out);
+grpc_error *grpc_deframe_unprocessed_incoming_frames(
+    grpc_exec_ctx *exec_ctx, grpc_chttp2_data_parser *p, grpc_chttp2_stream *s,
+    grpc_slice_buffer *slices, grpc_slice *slice_out,
+    grpc_byte_stream **stream_out);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H */
diff --git a/src/core/lib/channel/channel_args.c b/src/core/lib/channel/channel_args.c
index 3de31d99da1fbf8c66dad5a2d4b9869b3b7e072c..238d176dfae724a968ace9c894d470c9333fc008 100644
--- a/src/core/lib/channel/channel_args.c
+++ b/src/core/lib/channel/channel_args.c
@@ -31,17 +31,18 @@
  *
  */
 
-#include "src/core/lib/channel/channel_args.h"
-#include <grpc/grpc.h>
-#include "src/core/lib/support/string.h"
+#include <limits.h>
+#include <string.h>
 
 #include <grpc/compression.h>
+#include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include <string.h>
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/support/string.h"
 
 static grpc_arg copy_arg(const grpc_arg *src) {
   grpc_arg dst;
@@ -330,7 +331,7 @@ const grpc_arg *grpc_channel_args_find(const grpc_channel_args *args,
 }
 
 int grpc_channel_arg_get_integer(const grpc_arg *arg,
-                                 grpc_integer_options options) {
+                                 const grpc_integer_options options) {
   if (arg == NULL) return options.default_value;
   if (arg->type != GRPC_ARG_INTEGER) {
     gpr_log(GPR_ERROR, "%s ignored: it must be an integer", arg->key);
diff --git a/src/core/lib/channel/channel_args.h b/src/core/lib/channel/channel_args.h
index 5ffcacb7fd9e5350622b58fa572af4973665178d..f0f603e25146f594c84c00dc415840de1a3fe9ef 100644
--- a/src/core/lib/channel/channel_args.h
+++ b/src/core/lib/channel/channel_args.h
@@ -120,9 +120,10 @@ typedef struct grpc_integer_options {
   int min_value;
   int max_value;
 } grpc_integer_options;
+
 /** Returns the value of \a arg, subject to the contraints in \a options. */
 int grpc_channel_arg_get_integer(const grpc_arg *arg,
-                                 grpc_integer_options options);
+                                 const grpc_integer_options options);
 
 bool grpc_channel_arg_get_bool(const grpc_arg *arg, bool default_value);
 
diff --git a/src/core/lib/channel/context.h b/src/core/lib/channel/context.h
index 2c1174ce7a15cfba376175c515d321137e36c18f..6c931ad28aec4464f7fcc55afdb68c2585b69e7d 100644
--- a/src/core/lib/channel/context.h
+++ b/src/core/lib/channel/context.h
@@ -50,9 +50,6 @@ typedef enum {
   /// Reserved for traffic_class_context.
   GRPC_CONTEXT_TRAFFIC,
 
-  /// Costs for Load Reporting.
-  GRPC_CONTEXT_LR_COST,
-
   GRPC_CONTEXT_COUNT
 } grpc_context_index;
 
diff --git a/src/core/lib/iomgr/error.c b/src/core/lib/iomgr/error.c
index fbbca6b4939b258f91ab89ed01a3702cc30d564d..5f2c989aad00119792ab6b0974a962a7b7629b3e 100644
--- a/src/core/lib/iomgr/error.c
+++ b/src/core/lib/iomgr/error.c
@@ -217,8 +217,14 @@ static uint8_t get_placement(grpc_error **err, size_t size) {
     if ((*err)->arena_size + slots > (*err)->arena_capacity) {
       return UINT8_MAX;
     }
+#ifdef GRPC_ERROR_REFCOUNT_DEBUG
+    grpc_error *orig = *err;
+#endif
     *err = gpr_realloc(
         *err, sizeof(grpc_error) + (*err)->arena_capacity * sizeof(intptr_t));
+#ifdef GRPC_ERROR_REFCOUNT_DEBUG
+    if (*err != orig) gpr_log(GPR_DEBUG, "realloc %p -> %p", orig, *err);
+#endif
   }
   uint8_t placement = (*err)->arena_size;
   (*err)->arena_size = (uint8_t)((*err)->arena_size + slots);
@@ -313,7 +319,7 @@ static void internal_add_error(grpc_error **err, grpc_error *new) {
 // It is very common to include and extra int and string in an error
 #define SURPLUS_CAPACITY (2 * SLOTS_PER_INT + SLOTS_PER_TIME)
 
-grpc_error *grpc_error_create(grpc_slice file, int line, grpc_slice desc,
+grpc_error *grpc_error_create(const char *file, int line, grpc_slice desc,
                               grpc_error **referencing,
                               size_t num_referencing) {
   GPR_TIMER_BEGIN("grpc_error_create", 0);
@@ -339,7 +345,8 @@ grpc_error *grpc_error_create(grpc_slice file, int line, grpc_slice desc,
   memset(err->times, UINT8_MAX, GRPC_ERROR_TIME_MAX);
 
   internal_set_int(&err, GRPC_ERROR_INT_FILE_LINE, line);
-  internal_set_str(&err, GRPC_ERROR_STR_FILE, file);
+  internal_set_str(&err, GRPC_ERROR_STR_FILE,
+                   grpc_slice_from_static_string(file));
   internal_set_str(&err, GRPC_ERROR_STR_DESCRIPTION, desc);
 
   for (size_t i = 0; i < num_referencing; ++i) {
@@ -756,7 +763,7 @@ grpc_error *grpc_os_error(const char *file, int line, int err,
   return grpc_error_set_str(
       grpc_error_set_str(
           grpc_error_set_int(
-              grpc_error_create(grpc_slice_from_static_string(file), line,
+              grpc_error_create(file, line,
                                 grpc_slice_from_static_string("OS Error"), NULL,
                                 0),
               GRPC_ERROR_INT_ERRNO, err),
@@ -772,7 +779,7 @@ grpc_error *grpc_wsa_error(const char *file, int line, int err,
   grpc_error *error = grpc_error_set_str(
       grpc_error_set_str(
           grpc_error_set_int(
-              grpc_error_create(grpc_slice_from_static_string(file), line,
+              grpc_error_create(file, line,
                                 grpc_slice_from_static_string("OS Error"), NULL,
                                 0),
               GRPC_ERROR_INT_WSA_ERROR, err),
diff --git a/src/core/lib/iomgr/error.h b/src/core/lib/iomgr/error.h
index 2a44fcfe25eb97e56df2db609026558967823569..34b24d926388efe811ebd47e89464579593f2520 100644
--- a/src/core/lib/iomgr/error.h
+++ b/src/core/lib/iomgr/error.h
@@ -138,7 +138,7 @@ typedef enum {
 const char *grpc_error_string(grpc_error *error);
 
 /// Create an error - but use GRPC_ERROR_CREATE instead
-grpc_error *grpc_error_create(grpc_slice file, int line, grpc_slice desc,
+grpc_error *grpc_error_create(const char *file, int line, grpc_slice desc,
                               grpc_error **referencing, size_t num_referencing);
 /// Create an error (this is the preferred way of generating an error that is
 ///   not due to a system call - for system calls, use GRPC_OS_ERROR or
@@ -148,21 +148,21 @@ grpc_error *grpc_error_create(grpc_slice file, int line, grpc_slice desc,
 /// err = grpc_error_create(x, y, z, r, nr) is equivalent to:
 ///   err = grpc_error_create(x, y, z, NULL, 0);
 ///   for (i=0; i<nr; i++) err = grpc_error_add_child(err, r[i]);
-#define GRPC_ERROR_CREATE_FROM_STATIC_STRING(desc)                     \
-  grpc_error_create(grpc_slice_from_static_string(__FILE__), __LINE__, \
-                    grpc_slice_from_static_string(desc), NULL, 0)
-#define GRPC_ERROR_CREATE_FROM_COPIED_STRING(desc)                     \
-  grpc_error_create(grpc_slice_from_static_string(__FILE__), __LINE__, \
-                    grpc_slice_from_copied_string(desc), NULL, 0)
+#define GRPC_ERROR_CREATE_FROM_STATIC_STRING(desc)                           \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_static_string(desc), \
+                    NULL, 0)
+#define GRPC_ERROR_CREATE_FROM_COPIED_STRING(desc)                           \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_copied_string(desc), \
+                    NULL, 0)
 
 // Create an error that references some other errors. This function adds a
 // reference to each error in errs - it does not consume an existing reference
-#define GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(desc, errs, count) \
-  grpc_error_create(grpc_slice_from_static_string(__FILE__), __LINE__,      \
-                    grpc_slice_from_static_string(desc), errs, count)
-#define GRPC_ERROR_CREATE_REFERENCING_FROM_COPIED_STRING(desc, errs, count) \
-  grpc_error_create(grpc_slice_from_static_string(__FILE__), __LINE__,      \
-                    grpc_slice_from_copied_string(desc), errs, count)
+#define GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(desc, errs, count)  \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_static_string(desc), \
+                    errs, count)
+#define GRPC_ERROR_CREATE_REFERENCING_FROM_COPIED_STRING(desc, errs, count)  \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_copied_string(desc), \
+                    errs, count)
 
 //#define GRPC_ERROR_REFCOUNT_DEBUG
 #ifdef GRPC_ERROR_REFCOUNT_DEBUG
diff --git a/src/core/lib/iomgr/sockaddr_utils.h b/src/core/lib/iomgr/sockaddr_utils.h
index 2b22f11b49dcf9c9fd6e063063307835ff1314d0..be3ea2038f140610d79e028914149bb95ea6a310 100644
--- a/src/core/lib/iomgr/sockaddr_utils.h
+++ b/src/core/lib/iomgr/sockaddr_utils.h
@@ -50,7 +50,7 @@ int grpc_sockaddr_to_v4mapped(const grpc_resolved_address *addr,
                               grpc_resolved_address *addr6_out);
 
 /* If addr is ::, 0.0.0.0, or ::ffff:0.0.0.0, writes the port number to
-   *port_out (if not NULL) and returns true, otherwise returns false. */
+ *port_out (if not NULL) and returns true, otherwise returns false. */
 int grpc_sockaddr_is_wildcard(const grpc_resolved_address *addr, int *port_out);
 
 /* Writes 0.0.0.0:port and [::]:port to separate sockaddrs. */
diff --git a/src/core/lib/security/credentials/fake/fake_credentials.c b/src/core/lib/security/credentials/fake/fake_credentials.c
index 68636ba2088ecea6c54530a6bd84b74577d58301..3fdb67fb91261f47efa800f9b88a67524ef79827 100644
--- a/src/core/lib/security/credentials/fake/fake_credentials.c
+++ b/src/core/lib/security/credentials/fake/fake_credentials.c
@@ -39,11 +39,15 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/support/string.h"
 
 /* -- Fake transport security credentials. -- */
 
+#define GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS \
+  "grpc.fake_security.expected_targets"
+
 static grpc_security_status fake_transport_security_create_security_connector(
     grpc_exec_ctx *exec_ctx, grpc_channel_credentials *c,
     grpc_call_credentials *call_creds, const char *target,
@@ -88,6 +92,25 @@ grpc_server_credentials *grpc_fake_transport_security_server_credentials_create(
   return c;
 }
 
+grpc_arg grpc_fake_transport_expected_targets_arg(char *expected_targets) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_STRING;
+  arg.key = GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS;
+  arg.value.string = expected_targets;
+  return arg;
+}
+
+const char *grpc_fake_transport_get_expected_targets(
+    const grpc_channel_args *args) {
+  const grpc_arg *expected_target_arg =
+      grpc_channel_args_find(args, GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS);
+  if (expected_target_arg != NULL &&
+      expected_target_arg->type == GRPC_ARG_STRING) {
+    return expected_target_arg->value.string;
+  }
+  return NULL;
+}
+
 /* -- Metadata-only test credentials. -- */
 
 static void md_only_test_destruct(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/lib/security/credentials/fake/fake_credentials.h b/src/core/lib/security/credentials/fake/fake_credentials.h
index 0fe98417c6cb656ab3f03e936a1f08fcdb5ec2b7..a28b545a676769f27c06ea32d02287d6a5ececab 100644
--- a/src/core/lib/security/credentials/fake/fake_credentials.h
+++ b/src/core/lib/security/credentials/fake/fake_credentials.h
@@ -38,10 +38,17 @@
 
 /* -- Fake transport security credentials. -- */
 
+/* Creates a fake transport security credentials object for testing. */
+grpc_channel_credentials *grpc_fake_transport_security_credentials_create(void);
+
+/* Creates a fake server transport security credentials object for testing. */
+grpc_server_credentials *grpc_fake_transport_security_server_credentials_create(
+    void);
+
 /* Used to verify the target names given to the fake transport security
  * connector.
  *
- * Its syntax by example:
+ * The syntax of \a expected_targets by example:
  * For LB channels:
  *     "backend_target_1,backend_target_2,...;lb_target_1,lb_target_2,..."
  * For regular channels:
@@ -50,15 +57,11 @@
  * That is to say, LB channels have a heading list of LB targets separated from
  * the list of backend targets by a semicolon. For non-LB channels, only the
  * latter is present. */
-#define GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS \
-  "grpc.test_only.fake_security.expected_target"
+grpc_arg grpc_fake_transport_expected_targets_arg(char *expected_targets);
 
-/* Creates a fake transport security credentials object for testing. */
-grpc_channel_credentials *grpc_fake_transport_security_credentials_create(void);
-
-/* Creates a fake server transport security credentials object for testing. */
-grpc_server_credentials *grpc_fake_transport_security_server_credentials_create(
-    void);
+/* Return the value associated with the expected targets channel arg or NULL */
+const char *grpc_fake_transport_get_expected_targets(
+    const grpc_channel_args *args);
 
 /* --  Metadata-only Test credentials. -- */
 
diff --git a/src/core/lib/security/transport/security_connector.c b/src/core/lib/security/transport/security_connector.c
index dbe3263f92a37e04ed6e545848cc021e8644119f..b15196e677028b3ad6d71d21dc87665129f21188 100644
--- a/src/core/lib/security/transport/security_connector.c
+++ b/src/core/lib/security/transport/security_connector.c
@@ -423,12 +423,8 @@ grpc_channel_security_connector *grpc_fake_channel_security_connector_create(
   c->base.check_call_host = fake_channel_check_call_host;
   c->base.add_handshakers = fake_channel_add_handshakers;
   c->target = gpr_strdup(target);
-  const grpc_arg *expected_target_arg =
-      grpc_channel_args_find(args, GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS);
-  if (expected_target_arg != NULL) {
-    GPR_ASSERT(expected_target_arg->type == GRPC_ARG_STRING);
-    c->expected_targets = gpr_strdup(expected_target_arg->value.string);
-  }
+  const char *expected_targets = grpc_fake_transport_get_expected_targets(args);
+  c->expected_targets = gpr_strdup(expected_targets);
   c->is_lb_channel = (grpc_lb_targets_info_find_in_args(args) != NULL);
   return &c->base;
 }
diff --git a/src/core/lib/slice/slice_hash_table.c b/src/core/lib/slice/slice_hash_table.c
index 219567f36f8049aed864ed9f9dc35557a9f4ab1e..444f22aa196c974f5b9baa0ad4289c57bd6654a7 100644
--- a/src/core/lib/slice/slice_hash_table.c
+++ b/src/core/lib/slice/slice_hash_table.c
@@ -42,56 +42,47 @@
 
 struct grpc_slice_hash_table {
   gpr_refcount refs;
+  void (*destroy_value)(grpc_exec_ctx* exec_ctx, void* value);
   size_t size;
+  size_t max_num_probes;
   grpc_slice_hash_table_entry* entries;
 };
 
 static bool is_empty(grpc_slice_hash_table_entry* entry) {
-  return entry->vtable == NULL;
+  return entry->value == NULL;
 }
 
-// Helper function for insert and get operations that performs quadratic
-// probing (https://en.wikipedia.org/wiki/Quadratic_probing).
-static size_t grpc_slice_hash_table_find_index(
-    const grpc_slice_hash_table* table, const grpc_slice key, bool find_empty) {
-  size_t hash = grpc_slice_hash(key);
-  for (size_t i = 0; i < table->size; ++i) {
-    const size_t idx = (hash + i * i) % table->size;
+static void grpc_slice_hash_table_add(grpc_slice_hash_table* table,
+                                      grpc_slice key, void* value) {
+  GPR_ASSERT(value != NULL);
+  const size_t hash = grpc_slice_hash(key);
+  for (size_t offset = 0; offset < table->size; ++offset) {
+    const size_t idx = (hash + offset) % table->size;
     if (is_empty(&table->entries[idx])) {
-      return find_empty ? idx : table->size;
-    }
-    if (grpc_slice_eq(table->entries[idx].key, key)) {
-      return idx;
+      table->entries[idx].key = key;
+      table->entries[idx].value = value;
+      // Keep track of the maximum number of probes needed, since this
+      // provides an upper bound for lookups.
+      if (offset > table->max_num_probes) table->max_num_probes = offset;
+      return;
     }
   }
-  return table->size;  // Not found.
-}
-
-static void grpc_slice_hash_table_add(
-    grpc_slice_hash_table* table, grpc_slice key, void* value,
-    const grpc_slice_hash_table_vtable* vtable) {
-  GPR_ASSERT(value != NULL);
-  const size_t idx =
-      grpc_slice_hash_table_find_index(table, key, true /* find_empty */);
-  GPR_ASSERT(idx != table->size);  // Table should never be full.
-  grpc_slice_hash_table_entry* entry = &table->entries[idx];
-  entry->key = grpc_slice_ref_internal(key);
-  entry->value = vtable->copy_value(value);
-  entry->vtable = vtable;
+  GPR_ASSERT(false);  // Table should never be full.
 }
 
 grpc_slice_hash_table* grpc_slice_hash_table_create(
-    size_t num_entries, grpc_slice_hash_table_entry* entries) {
+    size_t num_entries, grpc_slice_hash_table_entry* entries,
+    void (*destroy_value)(grpc_exec_ctx* exec_ctx, void* value)) {
   grpc_slice_hash_table* table = gpr_zalloc(sizeof(*table));
   gpr_ref_init(&table->refs, 1);
-  // Quadratic probing gets best performance when the table is no more
-  // than half full.
+  table->destroy_value = destroy_value;
+  // Keep load factor low to improve performance of lookups.
   table->size = num_entries * 2;
   const size_t entry_size = sizeof(grpc_slice_hash_table_entry) * table->size;
   table->entries = gpr_zalloc(entry_size);
   for (size_t i = 0; i < num_entries; ++i) {
     grpc_slice_hash_table_entry* entry = &entries[i];
-    grpc_slice_hash_table_add(table, entry->key, entry->value, entry->vtable);
+    grpc_slice_hash_table_add(table, entry->key, entry->value);
   }
   return table;
 }
@@ -108,7 +99,7 @@ void grpc_slice_hash_table_unref(grpc_exec_ctx* exec_ctx,
       grpc_slice_hash_table_entry* entry = &table->entries[i];
       if (!is_empty(entry)) {
         grpc_slice_unref_internal(exec_ctx, entry->key);
-        entry->vtable->destroy_value(exec_ctx, entry->value);
+        table->destroy_value(exec_ctx, entry->value);
       }
     }
     gpr_free(table->entries);
@@ -118,8 +109,15 @@ void grpc_slice_hash_table_unref(grpc_exec_ctx* exec_ctx,
 
 void* grpc_slice_hash_table_get(const grpc_slice_hash_table* table,
                                 const grpc_slice key) {
-  const size_t idx =
-      grpc_slice_hash_table_find_index(table, key, false /* find_empty */);
-  if (idx == table->size) return NULL;  // Not found.
-  return table->entries[idx].value;
+  const size_t hash = grpc_slice_hash(key);
+  // We cap the number of probes at the max number recorded when
+  // populating the table.
+  for (size_t offset = 0; offset <= table->max_num_probes; ++offset) {
+    const size_t idx = (hash + offset) % table->size;
+    if (is_empty(&table->entries[idx])) break;
+    if (grpc_slice_eq(table->entries[idx].key, key)) {
+      return table->entries[idx].value;
+    }
+  }
+  return NULL;  // Not found.
 }
diff --git a/src/core/lib/slice/slice_hash_table.h b/src/core/lib/slice/slice_hash_table.h
index d0c27122d7f2b6efd538df1d7016738319918a88..1e61c5eb11624b8880b6343e6e9bc61c1b412637 100644
--- a/src/core/lib/slice/slice_hash_table.h
+++ b/src/core/lib/slice/slice_hash_table.h
@@ -37,33 +37,28 @@
 /** Hash table implementation.
  *
  * This implementation uses open addressing
- * (https://en.wikipedia.org/wiki/Open_addressing) with quadratic
- * probing (https://en.wikipedia.org/wiki/Quadratic_probing).
+ * (https://en.wikipedia.org/wiki/Open_addressing) with linear
+ * probing (https://en.wikipedia.org/wiki/Linear_probing).
  *
  * The keys are \a grpc_slice objects.  The values are arbitrary pointers
- * with a common vtable.
+ * with a common destroy function.
  *
  * Hash tables are intentionally immutable, to avoid the need for locking.
  */
 
 typedef struct grpc_slice_hash_table grpc_slice_hash_table;
 
-typedef struct grpc_slice_hash_table_vtable {
-  void (*destroy_value)(grpc_exec_ctx *exec_ctx, void *value);
-  void *(*copy_value)(void *value);
-} grpc_slice_hash_table_vtable;
-
 typedef struct grpc_slice_hash_table_entry {
   grpc_slice key;
   void *value; /* Must not be NULL. */
-  const grpc_slice_hash_table_vtable *vtable;
 } grpc_slice_hash_table_entry;
 
 /** Creates a new hash table of containing \a entries, which is an array
-    of length \a num_entries.
-    Creates its own copy of all keys and values from \a entries. */
+    of length \a num_entries.  Takes ownership of all keys and values in
+    \a entries.  Values will be cleaned up via \a destroy_value(). */
 grpc_slice_hash_table *grpc_slice_hash_table_create(
-    size_t num_entries, grpc_slice_hash_table_entry *entries);
+    size_t num_entries, grpc_slice_hash_table_entry *entries,
+    void (*destroy_value)(grpc_exec_ctx *exec_ctx, void *value));
 
 grpc_slice_hash_table *grpc_slice_hash_table_ref(grpc_slice_hash_table *table);
 void grpc_slice_hash_table_unref(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/lib/support/stack_lockfree.c b/src/core/lib/support/stack_lockfree.c
index 9d7c9e5a3816fe8b3916ae39f623585ea8a13b0e..dfbd3fb1251f751e3562759086857cc7f5a4bd1c 100644
--- a/src/core/lib/support/stack_lockfree.c
+++ b/src/core/lib/support/stack_lockfree.c
@@ -72,28 +72,20 @@ typedef union lockfree_node {
 struct gpr_stack_lockfree {
   lockfree_node *entries;
   lockfree_node head; /* An atomic entry describing curr head */
-
-#ifndef NDEBUG
-  /* Bitmap of pushed entries to check for double-push or pop */
-  gpr_atm pushed[(INVALID_ENTRY_INDEX + 1) / (8 * sizeof(gpr_atm))];
-#endif
 };
 
 gpr_stack_lockfree *gpr_stack_lockfree_create(size_t entries) {
   gpr_stack_lockfree *stack;
-  stack = gpr_malloc(sizeof(*stack));
+  stack = (gpr_stack_lockfree *)gpr_malloc(sizeof(*stack));
   /* Since we only allocate 16 bits to represent an entry number,
    * make sure that we are within the desired range */
   /* Reserve the highest entry number as a dummy */
   GPR_ASSERT(entries < INVALID_ENTRY_INDEX);
-  stack->entries = gpr_malloc_aligned(entries * sizeof(stack->entries[0]),
-                                      ENTRY_ALIGNMENT_BITS);
+  stack->entries = (lockfree_node *)gpr_malloc_aligned(
+      entries * sizeof(stack->entries[0]), ENTRY_ALIGNMENT_BITS);
   /* Clear out all entries */
   memset(stack->entries, 0, entries * sizeof(stack->entries[0]));
   memset(&stack->head, 0, sizeof(stack->head));
-#ifndef NDEBUG
-  memset(&stack->pushed, 0, sizeof(stack->pushed));
-#endif
 
   GPR_ASSERT(sizeof(stack->entries->atm) == sizeof(stack->entries->contents));
 
@@ -130,19 +122,6 @@ int gpr_stack_lockfree_push(gpr_stack_lockfree *stack, int entry) {
   newhead.contents.aba_ctr = ++curent.contents.aba_ctr;
   gpr_atm_no_barrier_store(&stack->entries[entry].atm, curent.atm);
 
-#ifndef NDEBUG
-  /* Check for double push */
-  {
-    int pushed_index = entry / (int)(8 * sizeof(gpr_atm));
-    int pushed_bit = entry % (int)(8 * sizeof(gpr_atm));
-    gpr_atm old_val;
-
-    old_val = gpr_atm_no_barrier_fetch_add(&stack->pushed[pushed_index],
-                                           ((gpr_atm)1 << pushed_bit));
-    GPR_ASSERT((old_val & (((gpr_atm)1) << pushed_bit)) == 0);
-  }
-#endif
-
   do {
     /* Atomically get the existing head value for use */
     head.atm = gpr_atm_no_barrier_load(&(stack->head.atm));
@@ -168,18 +147,6 @@ int gpr_stack_lockfree_pop(gpr_stack_lockfree *stack) {
         gpr_atm_no_barrier_load(&(stack->entries[head.contents.index].atm));
 
   } while (!gpr_atm_no_barrier_cas(&(stack->head.atm), head.atm, newhead.atm));
-#ifndef NDEBUG
-  /* Check for valid pop */
-  {
-    int pushed_index = head.contents.index / (8 * sizeof(gpr_atm));
-    int pushed_bit = head.contents.index % (8 * sizeof(gpr_atm));
-    gpr_atm old_val;
-
-    old_val = gpr_atm_no_barrier_fetch_add(&stack->pushed[pushed_index],
-                                           -((gpr_atm)1 << pushed_bit));
-    GPR_ASSERT((old_val & (((gpr_atm)1) << pushed_bit)) != 0);
-  }
-#endif
 
   return head.contents.index;
 }
diff --git a/src/core/lib/support/time_posix.c b/src/core/lib/support/time_posix.c
index a69c501e9fbaa339fbf13f5fda6e2a90c92b65bc..9bfec7782a2cf8f687455dd14d9d16c6befbcb00 100644
--- a/src/core/lib/support/time_posix.c
+++ b/src/core/lib/support/time_posix.c
@@ -42,6 +42,7 @@
 #ifdef __linux__
 #include <sys/syscall.h>
 #endif
+#include <grpc/support/atm.h>
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include "src/core/lib/support/block_annotate.h"
@@ -144,7 +145,14 @@ static gpr_timespec now_impl(gpr_clock_type clock) {
 
 gpr_timespec (*gpr_now_impl)(gpr_clock_type clock_type) = now_impl;
 
+#ifdef GPR_LOW_LEVEL_COUNTERS
+gpr_atm gpr_now_call_count;
+#endif
+
 gpr_timespec gpr_now(gpr_clock_type clock_type) {
+#ifdef GPR_LOW_LEVEL_COUNTERS
+  __atomic_fetch_add(&gpr_now_call_count, 1, __ATOMIC_RELAXED);
+#endif
   return gpr_now_impl(clock_type);
 }
 
diff --git a/src/core/lib/support/tmpfile_posix.c b/src/core/lib/support/tmpfile_posix.c
index 0cd4bb6fc3cedcf2aad4548b10aa1c69627c65cd..5771c158e07bd92c5e5d3dbda10a08634318f74e 100644
--- a/src/core/lib/support/tmpfile_posix.c
+++ b/src/core/lib/support/tmpfile_posix.c
@@ -50,34 +50,34 @@
 
 FILE *gpr_tmpfile(const char *prefix, char **tmp_filename) {
   FILE *result = NULL;
-  char *template;
+  char *filename_template;
   int fd;
 
   if (tmp_filename != NULL) *tmp_filename = NULL;
 
-  gpr_asprintf(&template, "/tmp/%s_XXXXXX", prefix);
-  GPR_ASSERT(template != NULL);
+  gpr_asprintf(&filename_template, "/tmp/%s_XXXXXX", prefix);
+  GPR_ASSERT(filename_template != NULL);
 
-  fd = mkstemp(template);
+  fd = mkstemp(filename_template);
   if (fd == -1) {
-    gpr_log(GPR_ERROR, "mkstemp failed for template %s with error %s.",
-            template, strerror(errno));
+    gpr_log(GPR_ERROR, "mkstemp failed for filename_template %s with error %s.",
+            filename_template, strerror(errno));
     goto end;
   }
   result = fdopen(fd, "w+");
   if (result == NULL) {
     gpr_log(GPR_ERROR, "Could not open file %s from fd %d (error = %s).",
-            template, fd, strerror(errno));
-    unlink(template);
+            filename_template, fd, strerror(errno));
+    unlink(filename_template);
     close(fd);
     goto end;
   }
 
 end:
   if (result != NULL && tmp_filename != NULL) {
-    *tmp_filename = template;
+    *tmp_filename = filename_template;
   } else {
-    gpr_free(template);
+    gpr_free(filename_template);
   }
   return result;
 }
diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index 3e96d09798536818593ea8ed18b3ac24d7a99879..752580658305e180642a5cdffdc363edf5b9f5de 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -160,6 +160,7 @@ typedef struct {
 } child_call;
 
 struct grpc_call {
+  gpr_refcount ext_ref;
   gpr_arena *arena;
   grpc_completion_queue *cq;
   grpc_polling_entity pollent;
@@ -170,7 +171,7 @@ struct grpc_call {
 
   /* client or server call */
   bool is_client;
-  /** has grpc_call_destroy been called */
+  /** has grpc_call_unref been called */
   bool destroy_called;
   /** flag indicating that cancellation is inherited */
   bool cancellation_is_inherited;
@@ -244,6 +245,7 @@ struct grpc_call {
 };
 
 int grpc_call_error_trace = 0;
+int grpc_compression_trace = 0;
 
 #define CALL_STACK_FROM_CALL(call) ((grpc_call_stack *)((call) + 1))
 #define CALL_FROM_CALL_STACK(call_stack) (((grpc_call *)(call_stack)) - 1)
@@ -282,6 +284,10 @@ static void add_init_error(grpc_error **composite, grpc_error *new) {
   *composite = grpc_error_add_child(*composite, new);
 }
 
+void *grpc_call_arena_alloc(grpc_call *call, size_t size) {
+  return gpr_arena_alloc(call->arena, size);
+}
+
 static parent_call *get_or_create_parent_call(grpc_call *call) {
   parent_call *p = (parent_call *)gpr_atm_acq_load(&call->parent_call_atm);
   if (p == NULL) {
@@ -312,6 +318,7 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
       gpr_arena_create(grpc_channel_get_call_size_estimate(args->channel));
   call = gpr_arena_alloc(arena,
                          sizeof(grpc_call) + channel_stack->call_stack_size);
+  gpr_ref_init(&call->ext_ref, 1);
   call->arena = arena;
   *out_call = call;
   call->channel = args->channel;
@@ -346,6 +353,8 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
   gpr_timespec send_deadline =
       gpr_convert_clock_type(args->send_deadline, GPR_CLOCK_MONOTONIC);
 
+  bool immediately_cancel = false;
+
   if (args->parent_call != NULL) {
     child_call *cc = call->child_call =
         gpr_arena_alloc(arena, sizeof(child_call));
@@ -386,8 +395,7 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
     if (args->propagation_mask & GRPC_PROPAGATE_CANCELLATION) {
       call->cancellation_is_inherited = 1;
       if (gpr_atm_acq_load(&args->parent_call->received_final_op_atm)) {
-        cancel_with_error(exec_ctx, call, STATUS_FROM_API_OVERRIDE,
-                          GRPC_ERROR_CANCELLED);
+        immediately_cancel = true;
       }
     }
 
@@ -407,7 +415,7 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
   call->send_deadline = send_deadline;
 
   GRPC_CHANNEL_INTERNAL_REF(args->channel, "call");
-  /* initial refcount dropped by grpc_call_destroy */
+  /* initial refcount dropped by grpc_call_unref */
   grpc_call_element_args call_args = {
       .call_stack = CALL_STACK_FROM_CALL(call),
       .server_transport_data = args->server_transport_data,
@@ -422,6 +430,10 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
     cancel_with_error(exec_ctx, call, STATUS_FROM_SURFACE,
                       GRPC_ERROR_REF(error));
   }
+  if (immediately_cancel) {
+    cancel_with_error(exec_ctx, call, STATUS_FROM_API_OVERRIDE,
+                      GRPC_ERROR_CANCELLED);
+  }
   if (args->cq != NULL) {
     GPR_ASSERT(
         args->pollset_set_alternative == NULL &&
@@ -528,12 +540,16 @@ static void destroy_call(grpc_exec_ctx *exec_ctx, void *call,
   GPR_TIMER_END("destroy_call", 0);
 }
 
-void grpc_call_destroy(grpc_call *c) {
+void grpc_call_ref(grpc_call *c) { gpr_ref(&c->ext_ref); }
+
+void grpc_call_unref(grpc_call *c) {
+  if (!gpr_unref(&c->ext_ref)) return;
+
   child_call *cc = c->child_call;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
-  GPR_TIMER_BEGIN("grpc_call_destroy", 0);
-  GRPC_API_TRACE("grpc_call_destroy(c=%p)", 1, (c));
+  GPR_TIMER_BEGIN("grpc_call_unref", 0);
+  GRPC_API_TRACE("grpc_call_unref(c=%p)", 1, (c));
 
   if (cc) {
     parent_call *pc = get_parent_call(cc->parent);
@@ -560,7 +576,7 @@ void grpc_call_destroy(grpc_call *c) {
   }
   GRPC_CALL_INTERNAL_UNREF(&exec_ctx, c, "destroy");
   grpc_exec_ctx_finish(&exec_ctx);
-  GPR_TIMER_END("grpc_call_destroy", 0);
+  GPR_TIMER_END("grpc_call_unref", 0);
 }
 
 grpc_call_error grpc_call_cancel(grpc_call *call, void *reserved) {
diff --git a/src/core/lib/surface/server.c b/src/core/lib/surface/server.c
index 38800ea37b328471e13b38da26e0e959091ece43..e133d1d2a46e7d15441aeca8532e3c1b17af870c 100644
--- a/src/core/lib/surface/server.c
+++ b/src/core/lib/surface/server.c
@@ -345,7 +345,7 @@ static void request_matcher_destroy(request_matcher *rm) {
 
 static void kill_zombie(grpc_exec_ctx *exec_ctx, void *elem,
                         grpc_error *error) {
-  grpc_call_destroy(grpc_call_from_top_element(elem));
+  grpc_call_unref(grpc_call_from_top_element(elem));
 }
 
 static void request_matcher_zombify_all_pending_calls(grpc_exec_ctx *exec_ctx,
@@ -1033,8 +1033,6 @@ grpc_server *grpc_server_create(const grpc_channel_args *args, void *reserved) {
 
   grpc_server *server = gpr_zalloc(sizeof(grpc_server));
 
-  GPR_ASSERT(grpc_is_initialized() && "call grpc_init()");
-
   gpr_mu_init(&server->mu_global);
   gpr_mu_init(&server->mu_call);
   gpr_cv_init(&server->starting_cv);
diff --git a/src/core/lib/transport/service_config.c b/src/core/lib/transport/service_config.c
index 1195f75044a4a64ac04c4fa2a79f6a9a2808f38c..6aecb7fa936369c24e904e796fc102c2d3b958fc 100644
--- a/src/core/lib/transport/service_config.c
+++ b/src/core/lib/transport/service_config.c
@@ -162,7 +162,6 @@ static char* parse_json_method_name(grpc_json* json) {
 static bool parse_json_method_config(
     grpc_exec_ctx* exec_ctx, grpc_json* json,
     void* (*create_value)(const grpc_json* method_config_json),
-    const grpc_slice_hash_table_vtable* vtable,
     grpc_slice_hash_table_entry* entries, size_t* idx) {
   // Construct value.
   void* method_config = create_value(json);
@@ -185,13 +184,11 @@ static bool parse_json_method_config(
   // Add entry for each path.
   for (size_t i = 0; i < paths.count; ++i) {
     entries[*idx].key = grpc_slice_from_copied_string(paths.strs[i]);
-    entries[*idx].value = vtable->copy_value(method_config);
-    entries[*idx].vtable = vtable;
+    entries[*idx].value = method_config;
     ++*idx;
   }
   success = true;
 done:
-  vtable->destroy_value(exec_ctx, method_config);
   gpr_strvec_destroy(&paths);
   return success;
 }
@@ -199,7 +196,7 @@ done:
 grpc_slice_hash_table* grpc_service_config_create_method_config_table(
     grpc_exec_ctx* exec_ctx, const grpc_service_config* service_config,
     void* (*create_value)(const grpc_json* method_config_json),
-    const grpc_slice_hash_table_vtable* vtable) {
+    void (*destroy_value)(grpc_exec_ctx* exec_ctx, void* value)) {
   const grpc_json* json = service_config->json_tree;
   // Traverse parsed JSON tree.
   if (json->type != GRPC_JSON_OBJECT || json->key != NULL) return NULL;
@@ -220,8 +217,8 @@ grpc_slice_hash_table* grpc_service_config_create_method_config_table(
       size_t idx = 0;
       for (grpc_json* method = field->child; method != NULL;
            method = method->next) {
-        if (!parse_json_method_config(exec_ctx, method, create_value, vtable,
-                                      entries, &idx)) {
+        if (!parse_json_method_config(exec_ctx, method, create_value, entries,
+                                      &idx)) {
           return NULL;
         }
       }
@@ -231,12 +228,8 @@ grpc_slice_hash_table* grpc_service_config_create_method_config_table(
   // Instantiate method config table.
   grpc_slice_hash_table* method_config_table = NULL;
   if (entries != NULL) {
-    method_config_table = grpc_slice_hash_table_create(num_entries, entries);
-    // Clean up.
-    for (size_t i = 0; i < num_entries; ++i) {
-      grpc_slice_unref_internal(exec_ctx, entries[i].key);
-      vtable->destroy_value(exec_ctx, entries[i].value);
-    }
+    method_config_table =
+        grpc_slice_hash_table_create(num_entries, entries, destroy_value);
     gpr_free(entries);
   }
   return method_config_table;
diff --git a/src/core/lib/transport/service_config.h b/src/core/lib/transport/service_config.h
index ebfc59b5347f057e775889c6c9d5be2b1a44f45b..e0548b9c3fa3c17c59ec4eed40405dc8b1f842fe 100644
--- a/src/core/lib/transport/service_config.h
+++ b/src/core/lib/transport/service_config.h
@@ -57,12 +57,12 @@ const char* grpc_service_config_get_lb_policy_name(
 /// Creates a method config table based on the data in \a json.
 /// The table's keys are request paths.  The table's value type is
 /// returned by \a create_value(), based on data parsed from the JSON tree.
-/// \a vtable provides methods used to manage the values.
+/// \a destroy_value is used to clean up values.
 /// Returns NULL on error.
 grpc_slice_hash_table* grpc_service_config_create_method_config_table(
     grpc_exec_ctx* exec_ctx, const grpc_service_config* service_config,
     void* (*create_value)(const grpc_json* method_config_json),
-    const grpc_slice_hash_table_vtable* vtable);
+    void (*destroy_value)(grpc_exec_ctx* exec_ctx, void* value));
 
 /// A helper function for looking up values in the table returned by
 /// \a grpc_service_config_create_method_config_table().
diff --git a/src/core/lib/transport/static_metadata.c b/src/core/lib/transport/static_metadata.c
index 599d4ad117127902baac3896c184e18ed433bf68..862cdaa8e09c3aedd11b40140a672131d7b388d2 100644
--- a/src/core/lib/transport/static_metadata.c
+++ b/src/core/lib/transport/static_metadata.c
@@ -97,23 +97,23 @@ static uint8_t g_bytes[] = {
     101, 105, 102, 45,  110, 111, 110, 101, 45,  109, 97,  116, 99,  104, 105,
     102, 45,  114, 97,  110, 103, 101, 105, 102, 45,  117, 110, 109, 111, 100,
     105, 102, 105, 101, 100, 45,  115, 105, 110, 99,  101, 108, 97,  115, 116,
-    45,  109, 111, 100, 105, 102, 105, 101, 100, 108, 105, 110, 107, 108, 111,
-    99,  97,  116, 105, 111, 110, 109, 97,  120, 45,  102, 111, 114, 119, 97,
-    114, 100, 115, 112, 114, 111, 120, 121, 45,  97,  117, 116, 104, 101, 110,
-    116, 105, 99,  97,  116, 101, 112, 114, 111, 120, 121, 45,  97,  117, 116,
-    104, 111, 114, 105, 122, 97,  116, 105, 111, 110, 114, 97,  110, 103, 101,
-    114, 101, 102, 101, 114, 101, 114, 114, 101, 102, 114, 101, 115, 104, 114,
-    101, 116, 114, 121, 45,  97,  102, 116, 101, 114, 115, 101, 114, 118, 101,
-    114, 115, 101, 116, 45,  99,  111, 111, 107, 105, 101, 115, 116, 114, 105,
-    99,  116, 45,  116, 114, 97,  110, 115, 112, 111, 114, 116, 45,  115, 101,
-    99,  117, 114, 105, 116, 121, 116, 114, 97,  110, 115, 102, 101, 114, 45,
-    101, 110, 99,  111, 100, 105, 110, 103, 118, 97,  114, 121, 118, 105, 97,
-    119, 119, 119, 45,  97,  117, 116, 104, 101, 110, 116, 105, 99,  97,  116,
-    101, 105, 100, 101, 110, 116, 105, 116, 121, 44,  100, 101, 102, 108, 97,
-    116, 101, 105, 100, 101, 110, 116, 105, 116, 121, 44,  103, 122, 105, 112,
-    100, 101, 102, 108, 97,  116, 101, 44,  103, 122, 105, 112, 105, 100, 101,
-    110, 116, 105, 116, 121, 44,  100, 101, 102, 108, 97,  116, 101, 44,  103,
-    122, 105, 112};
+    45,  109, 111, 100, 105, 102, 105, 101, 100, 108, 98,  45,  99,  111, 115,
+    116, 45,  98,  105, 110, 108, 105, 110, 107, 108, 111, 99,  97,  116, 105,
+    111, 110, 109, 97,  120, 45,  102, 111, 114, 119, 97,  114, 100, 115, 112,
+    114, 111, 120, 121, 45,  97,  117, 116, 104, 101, 110, 116, 105, 99,  97,
+    116, 101, 112, 114, 111, 120, 121, 45,  97,  117, 116, 104, 111, 114, 105,
+    122, 97,  116, 105, 111, 110, 114, 97,  110, 103, 101, 114, 101, 102, 101,
+    114, 101, 114, 114, 101, 102, 114, 101, 115, 104, 114, 101, 116, 114, 121,
+    45,  97,  102, 116, 101, 114, 115, 101, 114, 118, 101, 114, 115, 101, 116,
+    45,  99,  111, 111, 107, 105, 101, 115, 116, 114, 105, 99,  116, 45,  116,
+    114, 97,  110, 115, 112, 111, 114, 116, 45,  115, 101, 99,  117, 114, 105,
+    116, 121, 116, 114, 97,  110, 115, 102, 101, 114, 45,  101, 110, 99,  111,
+    100, 105, 110, 103, 118, 97,  114, 121, 118, 105, 97,  119, 119, 119, 45,
+    97,  117, 116, 104, 101, 110, 116, 105, 99,  97,  116, 101, 105, 100, 101,
+    110, 116, 105, 116, 121, 44,  100, 101, 102, 108, 97,  116, 101, 105, 100,
+    101, 110, 116, 105, 116, 121, 44,  103, 122, 105, 112, 100, 101, 102, 108,
+    97,  116, 101, 44,  103, 122, 105, 112, 105, 100, 101, 110, 116, 105, 116,
+    121, 44,  100, 101, 102, 108, 97,  116, 101, 44,  103, 122, 105, 112};
 
 static void static_ref(void *unused) {}
 static void static_unref(grpc_exec_ctx *exec_ctx, void *unused) {}
@@ -223,6 +223,7 @@ grpc_slice_refcount grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT] = {
     {&grpc_static_metadata_vtable, &static_sub_refcnt},
     {&grpc_static_metadata_vtable, &static_sub_refcnt},
     {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
 };
 
 const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT] = {
@@ -383,64 +384,67 @@ const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT] = {
     {.refcount = &grpc_static_metadata_refcounts[77],
      .data.refcounted = {g_bytes + 791, 13}},
     {.refcount = &grpc_static_metadata_refcounts[78],
-     .data.refcounted = {g_bytes + 804, 4}},
+     .data.refcounted = {g_bytes + 804, 11}},
     {.refcount = &grpc_static_metadata_refcounts[79],
-     .data.refcounted = {g_bytes + 808, 8}},
+     .data.refcounted = {g_bytes + 815, 4}},
     {.refcount = &grpc_static_metadata_refcounts[80],
-     .data.refcounted = {g_bytes + 816, 12}},
+     .data.refcounted = {g_bytes + 819, 8}},
     {.refcount = &grpc_static_metadata_refcounts[81],
-     .data.refcounted = {g_bytes + 828, 18}},
+     .data.refcounted = {g_bytes + 827, 12}},
     {.refcount = &grpc_static_metadata_refcounts[82],
-     .data.refcounted = {g_bytes + 846, 19}},
+     .data.refcounted = {g_bytes + 839, 18}},
     {.refcount = &grpc_static_metadata_refcounts[83],
-     .data.refcounted = {g_bytes + 865, 5}},
+     .data.refcounted = {g_bytes + 857, 19}},
     {.refcount = &grpc_static_metadata_refcounts[84],
-     .data.refcounted = {g_bytes + 870, 7}},
+     .data.refcounted = {g_bytes + 876, 5}},
     {.refcount = &grpc_static_metadata_refcounts[85],
-     .data.refcounted = {g_bytes + 877, 7}},
+     .data.refcounted = {g_bytes + 881, 7}},
     {.refcount = &grpc_static_metadata_refcounts[86],
-     .data.refcounted = {g_bytes + 884, 11}},
+     .data.refcounted = {g_bytes + 888, 7}},
     {.refcount = &grpc_static_metadata_refcounts[87],
-     .data.refcounted = {g_bytes + 895, 6}},
+     .data.refcounted = {g_bytes + 895, 11}},
     {.refcount = &grpc_static_metadata_refcounts[88],
-     .data.refcounted = {g_bytes + 901, 10}},
+     .data.refcounted = {g_bytes + 906, 6}},
     {.refcount = &grpc_static_metadata_refcounts[89],
-     .data.refcounted = {g_bytes + 911, 25}},
+     .data.refcounted = {g_bytes + 912, 10}},
     {.refcount = &grpc_static_metadata_refcounts[90],
-     .data.refcounted = {g_bytes + 936, 17}},
+     .data.refcounted = {g_bytes + 922, 25}},
     {.refcount = &grpc_static_metadata_refcounts[91],
-     .data.refcounted = {g_bytes + 953, 4}},
+     .data.refcounted = {g_bytes + 947, 17}},
     {.refcount = &grpc_static_metadata_refcounts[92],
-     .data.refcounted = {g_bytes + 957, 3}},
+     .data.refcounted = {g_bytes + 964, 4}},
     {.refcount = &grpc_static_metadata_refcounts[93],
-     .data.refcounted = {g_bytes + 960, 16}},
+     .data.refcounted = {g_bytes + 968, 3}},
     {.refcount = &grpc_static_metadata_refcounts[94],
-     .data.refcounted = {g_bytes + 976, 16}},
+     .data.refcounted = {g_bytes + 971, 16}},
     {.refcount = &grpc_static_metadata_refcounts[95],
-     .data.refcounted = {g_bytes + 992, 13}},
+     .data.refcounted = {g_bytes + 987, 16}},
     {.refcount = &grpc_static_metadata_refcounts[96],
-     .data.refcounted = {g_bytes + 1005, 12}},
+     .data.refcounted = {g_bytes + 1003, 13}},
     {.refcount = &grpc_static_metadata_refcounts[97],
-     .data.refcounted = {g_bytes + 1017, 21}},
+     .data.refcounted = {g_bytes + 1016, 12}},
+    {.refcount = &grpc_static_metadata_refcounts[98],
+     .data.refcounted = {g_bytes + 1028, 21}},
 };
 
 uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] = {
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 6, 6, 8, 8};
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 6, 6, 8, 8};
 
 static const int8_t elems_r[] = {
-    10, 8,   -3,  0,  9,   21,  -76, 22,  0,   10,  -7,  0,  0,  0,  14, 0,
-    13, 12,  11,  0,  0,   0,   0,   0,   0,   0,   0,   0,  0,  0,  0,  0,
-    0,  0,   0,   0,  0,   0,   0,   0,   0,   0,   0,   0,  0,  0,  0,  0,
-    0,  -50, -51, 15, -53, -54, -55, -56, -56, -57, -58, 0,  37, 36, 35, 34,
-    33, 32,  31,  30, 29,  28,  27,  26,  25,  24,  23,  22, 21, 20, 19, 18,
-    17, 16,  15,  14, 13,  12,  11,  10,  13,  12,  11,  10, 9,  8,  7,  0};
+    10,  8,   -3,  0,   9,  21, -77, 22,  0,   10, -7,  0,   0,   0,
+    14,  0,   13,  12,  11, 0,  0,   0,   0,   0,  0,   0,   0,   0,
+    0,   0,   0,   0,   0,  0,  0,   0,   0,   0,  0,   0,   0,   0,
+    0,   0,   0,   0,   0,  0,  0,   -50, -51, 16, -53, -54, -55, -56,
+    -56, -57, -58, -59, 0,  37, 36,  35,  34,  33, 32,  31,  30,  29,
+    28,  27,  26,  25,  24, 23, 22,  21,  20,  19, 18,  17,  16,  15,
+    14,  13,  12,  11,  10, 13, 12,  11,  10,  9,  8,   7,   0};
 static uint32_t elems_phash(uint32_t i) {
   i -= 42;
-  uint32_t x = i % 96;
-  uint32_t y = i / 96;
+  uint32_t x = i % 97;
+  uint32_t y = i / 97;
   uint32_t h = x;
   if (y < GPR_ARRAY_SIZE(elems_r)) {
     uint32_t delta = (uint32_t)elems_r[y];
@@ -450,29 +454,30 @@ static uint32_t elems_phash(uint32_t i) {
 }
 
 static const uint16_t elem_keys[] = {
-    1009, 1010, 1011, 240,  241,  242,  243,  244,  138,  139,  42,   43,
-    429,  430,  431,  911,  912,  913,  712,  713,  1392, 522,  714,  1588,
-    1686, 1784, 4822, 4920, 4951, 5116, 5214, 5312, 5410, 1405, 5508, 5606,
-    5704, 5802, 5900, 5998, 6096, 6194, 6292, 6390, 6488, 6586, 6684, 6782,
-    6880, 6978, 7076, 7174, 7272, 7370, 7468, 7566, 7664, 7762, 7860, 7958,
-    8056, 8154, 8252, 8350, 8448, 1074, 1075, 1076, 1077, 8546, 8644, 8742,
-    8840, 8938, 9036, 9134, 0,    314,  0,    0,    0,    0,    0,    0,
+    1019, 1020, 1021, 242,  243,  244,  245,  246,  139,  140,  42,   43,
+    433,  434,  435,  920,  921,  922,  719,  720,  1406, 527,  721,  1604,
+    1703, 1802, 4871, 4970, 5001, 5168, 5267, 5366, 5465, 1419, 5564, 5663,
+    5762, 5861, 5960, 6059, 6158, 6257, 6356, 6455, 6554, 6653, 6752, 6851,
+    6950, 7049, 7148, 7247, 7346, 7445, 7544, 7643, 7742, 7841, 7940, 8039,
+    8138, 8237, 8336, 8435, 8534, 8633, 1085, 1086, 1087, 1088, 8732, 8831,
+    8930, 9029, 9128, 9227, 9326, 0,    317,  0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    133,  233,  234,  0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    132,  231,  232,  0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0};
+    0};
 static const uint8_t elem_idxs[] = {
-    73,  76,  74,  19,  20,  21,  22,  23,  15,  16,  17,  18,  11,  12,  13,
-    3,   4,   5,   0,   1,   41,  6,   2,   69,  48,  55,  24,  25,  26,  27,
+    74,  77,  75,  19,  20,  21,  22,  23,  15,  16,  17,  18,  11,  12,  13,
+    3,   4,   5,   0,   1,   41,  6,   2,   70,  48,  55,  24,  25,  26,  27,
     28,  29,  30,  7,   31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  42,
     43,  44,  45,  46,  47,  49,  50,  51,  52,  53,  54,  56,  57,  58,  59,
-    60,  61,  62,  63,  64,  75,  77,  78,  79,  65,  66,  67,  68,  70,  71,
-    72,  255, 14,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 8,   9,   10};
+    60,  61,  62,  63,  64,  65,  76,  78,  79,  80,  66,  67,  68,  69,  71,
+    72,  73,  255, 14,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 8,   9,   10};
 
 grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b) {
   if (a == -1 || b == -1) return GRPC_MDNULL;
-  uint32_t k = (uint32_t)(a * 98 + b);
+  uint32_t k = (uint32_t)(a * 99 + b);
   uint32_t h = elems_phash(k);
   return h < GPR_ARRAY_SIZE(elem_keys) && elem_keys[h] == k
              ? GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[elem_idxs[h]],
@@ -706,71 +711,75 @@ grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT] = {
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[78],
-      .data.refcounted = {g_bytes + 804, 4}},
+      .data.refcounted = {g_bytes + 804, 11}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[79],
-      .data.refcounted = {g_bytes + 808, 8}},
+      .data.refcounted = {g_bytes + 815, 4}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[80],
-      .data.refcounted = {g_bytes + 816, 12}},
+      .data.refcounted = {g_bytes + 819, 8}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[81],
-      .data.refcounted = {g_bytes + 828, 18}},
+      .data.refcounted = {g_bytes + 827, 12}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[82],
-      .data.refcounted = {g_bytes + 846, 19}},
+      .data.refcounted = {g_bytes + 839, 18}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[83],
-      .data.refcounted = {g_bytes + 865, 5}},
+      .data.refcounted = {g_bytes + 857, 19}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[84],
-      .data.refcounted = {g_bytes + 870, 7}},
+      .data.refcounted = {g_bytes + 876, 5}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[85],
-      .data.refcounted = {g_bytes + 877, 7}},
+      .data.refcounted = {g_bytes + 881, 7}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[86],
-      .data.refcounted = {g_bytes + 884, 11}},
+      .data.refcounted = {g_bytes + 888, 7}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[87],
-      .data.refcounted = {g_bytes + 895, 6}},
+      .data.refcounted = {g_bytes + 895, 11}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[88],
-      .data.refcounted = {g_bytes + 901, 10}},
+      .data.refcounted = {g_bytes + 906, 6}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[89],
-      .data.refcounted = {g_bytes + 911, 25}},
+      .data.refcounted = {g_bytes + 912, 10}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[90],
-      .data.refcounted = {g_bytes + 936, 17}},
+      .data.refcounted = {g_bytes + 922, 25}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[16],
-      .data.refcounted = {g_bytes + 200, 10}},
+    {{.refcount = &grpc_static_metadata_refcounts[91],
+      .data.refcounted = {g_bytes + 947, 17}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[91],
-      .data.refcounted = {g_bytes + 953, 4}},
+    {{.refcount = &grpc_static_metadata_refcounts[16],
+      .data.refcounted = {g_bytes + 200, 10}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[92],
-      .data.refcounted = {g_bytes + 957, 3}},
+      .data.refcounted = {g_bytes + 964, 4}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[93],
-      .data.refcounted = {g_bytes + 960, 16}},
+      .data.refcounted = {g_bytes + 968, 3}},
+     {.refcount = &grpc_static_metadata_refcounts[20],
+      .data.refcounted = {g_bytes + 234, 0}}},
+    {{.refcount = &grpc_static_metadata_refcounts[94],
+      .data.refcounted = {g_bytes + 971, 16}},
      {.refcount = &grpc_static_metadata_refcounts[20],
       .data.refcounted = {g_bytes + 234, 0}}},
     {{.refcount = &grpc_static_metadata_refcounts[10],
@@ -783,24 +792,24 @@ grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT] = {
       .data.refcounted = {g_bytes + 377, 7}}},
     {{.refcount = &grpc_static_metadata_refcounts[10],
       .data.refcounted = {g_bytes + 90, 20}},
-     {.refcount = &grpc_static_metadata_refcounts[94],
-      .data.refcounted = {g_bytes + 976, 16}}},
+     {.refcount = &grpc_static_metadata_refcounts[95],
+      .data.refcounted = {g_bytes + 987, 16}}},
     {{.refcount = &grpc_static_metadata_refcounts[10],
       .data.refcounted = {g_bytes + 90, 20}},
      {.refcount = &grpc_static_metadata_refcounts[30],
       .data.refcounted = {g_bytes + 373, 4}}},
-    {{.refcount = &grpc_static_metadata_refcounts[10],
-      .data.refcounted = {g_bytes + 90, 20}},
-     {.refcount = &grpc_static_metadata_refcounts[95],
-      .data.refcounted = {g_bytes + 992, 13}}},
     {{.refcount = &grpc_static_metadata_refcounts[10],
       .data.refcounted = {g_bytes + 90, 20}},
      {.refcount = &grpc_static_metadata_refcounts[96],
-      .data.refcounted = {g_bytes + 1005, 12}}},
+      .data.refcounted = {g_bytes + 1003, 13}}},
     {{.refcount = &grpc_static_metadata_refcounts[10],
       .data.refcounted = {g_bytes + 90, 20}},
      {.refcount = &grpc_static_metadata_refcounts[97],
-      .data.refcounted = {g_bytes + 1017, 21}}},
+      .data.refcounted = {g_bytes + 1016, 12}}},
+    {{.refcount = &grpc_static_metadata_refcounts[10],
+      .data.refcounted = {g_bytes + 90, 20}},
+     {.refcount = &grpc_static_metadata_refcounts[98],
+      .data.refcounted = {g_bytes + 1028, 21}}},
 };
-const uint8_t grpc_static_accept_encoding_metadata[8] = {0,  73, 74, 75,
-                                                         76, 77, 78, 79};
+const uint8_t grpc_static_accept_encoding_metadata[8] = {0,  74, 75, 76,
+                                                         77, 78, 79, 80};
diff --git a/src/core/lib/transport/static_metadata.h b/src/core/lib/transport/static_metadata.h
index dcbe418edc5c4ba167c8d96a0986858e2ce66f18..84fb316fd66a23037f97dc1d9b29cb37d86b51f0 100644
--- a/src/core/lib/transport/static_metadata.h
+++ b/src/core/lib/transport/static_metadata.h
@@ -44,7 +44,7 @@
 
 #include "src/core/lib/transport/metadata.h"
 
-#define GRPC_STATIC_MDSTR_COUNT 98
+#define GRPC_STATIC_MDSTR_COUNT 99
 extern const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT];
 /* ":path" */
 #define GRPC_MDSTR_PATH (grpc_static_slice_table[0])
@@ -205,47 +205,49 @@ extern const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT];
 #define GRPC_MDSTR_IF_UNMODIFIED_SINCE (grpc_static_slice_table[76])
 /* "last-modified" */
 #define GRPC_MDSTR_LAST_MODIFIED (grpc_static_slice_table[77])
+/* "lb-cost-bin" */
+#define GRPC_MDSTR_LB_COST_BIN (grpc_static_slice_table[78])
 /* "link" */
-#define GRPC_MDSTR_LINK (grpc_static_slice_table[78])
+#define GRPC_MDSTR_LINK (grpc_static_slice_table[79])
 /* "location" */
-#define GRPC_MDSTR_LOCATION (grpc_static_slice_table[79])
+#define GRPC_MDSTR_LOCATION (grpc_static_slice_table[80])
 /* "max-forwards" */
-#define GRPC_MDSTR_MAX_FORWARDS (grpc_static_slice_table[80])
+#define GRPC_MDSTR_MAX_FORWARDS (grpc_static_slice_table[81])
 /* "proxy-authenticate" */
-#define GRPC_MDSTR_PROXY_AUTHENTICATE (grpc_static_slice_table[81])
+#define GRPC_MDSTR_PROXY_AUTHENTICATE (grpc_static_slice_table[82])
 /* "proxy-authorization" */
-#define GRPC_MDSTR_PROXY_AUTHORIZATION (grpc_static_slice_table[82])
+#define GRPC_MDSTR_PROXY_AUTHORIZATION (grpc_static_slice_table[83])
 /* "range" */
-#define GRPC_MDSTR_RANGE (grpc_static_slice_table[83])
+#define GRPC_MDSTR_RANGE (grpc_static_slice_table[84])
 /* "referer" */
-#define GRPC_MDSTR_REFERER (grpc_static_slice_table[84])
+#define GRPC_MDSTR_REFERER (grpc_static_slice_table[85])
 /* "refresh" */
-#define GRPC_MDSTR_REFRESH (grpc_static_slice_table[85])
+#define GRPC_MDSTR_REFRESH (grpc_static_slice_table[86])
 /* "retry-after" */
-#define GRPC_MDSTR_RETRY_AFTER (grpc_static_slice_table[86])
+#define GRPC_MDSTR_RETRY_AFTER (grpc_static_slice_table[87])
 /* "server" */
-#define GRPC_MDSTR_SERVER (grpc_static_slice_table[87])
+#define GRPC_MDSTR_SERVER (grpc_static_slice_table[88])
 /* "set-cookie" */
-#define GRPC_MDSTR_SET_COOKIE (grpc_static_slice_table[88])
+#define GRPC_MDSTR_SET_COOKIE (grpc_static_slice_table[89])
 /* "strict-transport-security" */
-#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (grpc_static_slice_table[89])
+#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (grpc_static_slice_table[90])
 /* "transfer-encoding" */
-#define GRPC_MDSTR_TRANSFER_ENCODING (grpc_static_slice_table[90])
+#define GRPC_MDSTR_TRANSFER_ENCODING (grpc_static_slice_table[91])
 /* "vary" */
-#define GRPC_MDSTR_VARY (grpc_static_slice_table[91])
+#define GRPC_MDSTR_VARY (grpc_static_slice_table[92])
 /* "via" */
-#define GRPC_MDSTR_VIA (grpc_static_slice_table[92])
+#define GRPC_MDSTR_VIA (grpc_static_slice_table[93])
 /* "www-authenticate" */
-#define GRPC_MDSTR_WWW_AUTHENTICATE (grpc_static_slice_table[93])
+#define GRPC_MDSTR_WWW_AUTHENTICATE (grpc_static_slice_table[94])
 /* "identity,deflate" */
-#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE (grpc_static_slice_table[94])
+#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE (grpc_static_slice_table[95])
 /* "identity,gzip" */
-#define GRPC_MDSTR_IDENTITY_COMMA_GZIP (grpc_static_slice_table[95])
+#define GRPC_MDSTR_IDENTITY_COMMA_GZIP (grpc_static_slice_table[96])
 /* "deflate,gzip" */
-#define GRPC_MDSTR_DEFLATE_COMMA_GZIP (grpc_static_slice_table[96])
+#define GRPC_MDSTR_DEFLATE_COMMA_GZIP (grpc_static_slice_table[97])
 /* "identity,deflate,gzip" */
 #define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
-  (grpc_static_slice_table[97])
+  (grpc_static_slice_table[98])
 
 extern const grpc_slice_refcount_vtable grpc_static_metadata_vtable;
 extern grpc_slice_refcount
@@ -257,7 +259,7 @@ extern grpc_slice_refcount
 #define GRPC_STATIC_METADATA_INDEX(static_slice) \
   ((int)((static_slice).refcount - grpc_static_metadata_refcounts))
 
-#define GRPC_STATIC_MDELEM_COUNT 80
+#define GRPC_STATIC_MDELEM_COUNT 81
 extern grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];
 extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
 /* "grpc-status": "0" */
@@ -428,78 +430,81 @@ extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
 /* "lb-token": "" */
 #define GRPC_MDELEM_LB_TOKEN_EMPTY \
   (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[55], GRPC_MDELEM_STORAGE_STATIC))
+/* "lb-cost-bin": "" */
+#define GRPC_MDELEM_LB_COST_BIN_EMPTY \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[56], GRPC_MDELEM_STORAGE_STATIC))
 /* "link": "" */
 #define GRPC_MDELEM_LINK_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[56], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[57], GRPC_MDELEM_STORAGE_STATIC))
 /* "location": "" */
 #define GRPC_MDELEM_LOCATION_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[57], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[58], GRPC_MDELEM_STORAGE_STATIC))
 /* "max-forwards": "" */
 #define GRPC_MDELEM_MAX_FORWARDS_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[58], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[59], GRPC_MDELEM_STORAGE_STATIC))
 /* "proxy-authenticate": "" */
 #define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[59], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[60], GRPC_MDELEM_STORAGE_STATIC))
 /* "proxy-authorization": "" */
 #define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[60], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[61], GRPC_MDELEM_STORAGE_STATIC))
 /* "range": "" */
 #define GRPC_MDELEM_RANGE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[61], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[62], GRPC_MDELEM_STORAGE_STATIC))
 /* "referer": "" */
 #define GRPC_MDELEM_REFERER_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[62], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[63], GRPC_MDELEM_STORAGE_STATIC))
 /* "refresh": "" */
 #define GRPC_MDELEM_REFRESH_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[63], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[64], GRPC_MDELEM_STORAGE_STATIC))
 /* "retry-after": "" */
 #define GRPC_MDELEM_RETRY_AFTER_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[64], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[65], GRPC_MDELEM_STORAGE_STATIC))
 /* "server": "" */
 #define GRPC_MDELEM_SERVER_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[65], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[66], GRPC_MDELEM_STORAGE_STATIC))
 /* "set-cookie": "" */
 #define GRPC_MDELEM_SET_COOKIE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[66], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[67], GRPC_MDELEM_STORAGE_STATIC))
 /* "strict-transport-security": "" */
 #define GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[67], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[68], GRPC_MDELEM_STORAGE_STATIC))
 /* "transfer-encoding": "" */
 #define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[68], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[69], GRPC_MDELEM_STORAGE_STATIC))
 /* "user-agent": "" */
 #define GRPC_MDELEM_USER_AGENT_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[69], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[70], GRPC_MDELEM_STORAGE_STATIC))
 /* "vary": "" */
 #define GRPC_MDELEM_VARY_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[70], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[71], GRPC_MDELEM_STORAGE_STATIC))
 /* "via": "" */
 #define GRPC_MDELEM_VIA_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[71], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[72], GRPC_MDELEM_STORAGE_STATIC))
 /* "www-authenticate": "" */
 #define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[72], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[73], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "identity" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[73], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[74], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "deflate" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[74], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[75], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "identity,deflate" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[75], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[76], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "gzip" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_GZIP \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[76], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[77], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "identity,gzip" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[77], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[78], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "deflate,gzip" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE_COMMA_GZIP \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[78], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[79], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "identity,deflate,gzip" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[79], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[80], GRPC_MDELEM_STORAGE_STATIC))
 
 grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b);
 typedef enum {
diff --git a/src/core/tsi/ssl_transport_security.c b/src/core/tsi/ssl_transport_security.c
index 7167c66763bfa23d330f1b1bf26ec30309c95f65..af1af6f8f28dc27a7b89ed9710c96bf985d3dc18 100644
--- a/src/core/tsi/ssl_transport_security.c
+++ b/src/core/tsi/ssl_transport_security.c
@@ -45,6 +45,7 @@
 #include <ws2tcpip.h>
 #else
 #include <arpa/inet.h>
+#include <sys/socket.h>
 #endif
 
 #include <grpc/support/alloc.h>
diff --git a/src/cpp/client/channel_cc.cc b/src/cpp/client/channel_cc.cc
index c985183ae7600022d36bef593547202772ff76d8..fac1ba9d43c1691c0cdbd4bf156ab59f50e9f723 100644
--- a/src/cpp/client/channel_cc.cc
+++ b/src/cpp/client/channel_cc.cc
@@ -131,7 +131,7 @@ void Channel::PerformOpsOnCall(CallOpSetInterface* ops, Call* call) {
   static const size_t MAX_OPS = 8;
   size_t nops = 0;
   grpc_op cops[MAX_OPS];
-  ops->FillOps(cops, &nops);
+  ops->FillOps(call->call(), cops, &nops);
   GPR_ASSERT(GRPC_CALL_OK ==
              grpc_call_start_batch(call->call(), cops, nops, ops, nullptr));
 }
diff --git a/src/cpp/client/client_context.cc b/src/cpp/client/client_context.cc
index 3d884cf62e4278380a99409fa74d44c4581b9fd5..251623284089e4afa130deaa23e09a8d53db37fd 100644
--- a/src/cpp/client/client_context.cc
+++ b/src/cpp/client/client_context.cc
@@ -74,7 +74,7 @@ ClientContext::ClientContext()
 
 ClientContext::~ClientContext() {
   if (call_) {
-    grpc_call_destroy(call_);
+    grpc_call_unref(call_);
   }
   g_client_callbacks->Destructor(this);
 }
diff --git a/src/cpp/client/generic_stub.cc b/src/cpp/client/generic_stub.cc
index 7a2fdf941cec7ff29271b99bbce48afbcdcc5fd5..4adb2a53599d38a01af287067bc5ef5f2ce9f644 100644
--- a/src/cpp/client/generic_stub.cc
+++ b/src/cpp/client/generic_stub.cc
@@ -42,7 +42,7 @@ std::unique_ptr<GenericClientAsyncReaderWriter> GenericStub::Call(
     ClientContext* context, const grpc::string& method, CompletionQueue* cq,
     void* tag) {
   return std::unique_ptr<GenericClientAsyncReaderWriter>(
-      new GenericClientAsyncReaderWriter(
+      GenericClientAsyncReaderWriter::Create(
           channel_.get(), cq,
           RpcMethod(method.c_str(), RpcMethod::BIDI_STREAMING), context, tag));
 }
diff --git a/src/cpp/common/core_codegen.cc b/src/cpp/common/core_codegen.cc
index 0dd758ec4e5446a85f2257279917467879d33556..4f8b826aec86d04968f379cd947227bb27e78d12 100644
--- a/src/cpp/common/core_codegen.cc
+++ b/src/cpp/common/core_codegen.cc
@@ -96,6 +96,12 @@ void CoreCodegen::grpc_byte_buffer_destroy(grpc_byte_buffer* bb) {
   ::grpc_byte_buffer_destroy(bb);
 }
 
+void CoreCodegen::grpc_call_ref(grpc_call* call) { ::grpc_call_ref(call); }
+void CoreCodegen::grpc_call_unref(grpc_call* call) { ::grpc_call_unref(call); }
+void* CoreCodegen::grpc_call_arena_alloc(grpc_call* call, size_t length) {
+  return ::grpc_call_arena_alloc(call, length);
+}
+
 int CoreCodegen::grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
                                               grpc_byte_buffer* buffer) {
   return ::grpc_byte_buffer_reader_init(reader, buffer);
diff --git a/src/cpp/server/server_cc.cc b/src/cpp/server/server_cc.cc
index 75610d69cd34842cbc0e2c6ac9b89a2324d6b2ae..b4d6961db890fdaa944e67d62ab5d8479083c633 100644
--- a/src/cpp/server/server_cc.cc
+++ b/src/cpp/server/server_cc.cc
@@ -328,14 +328,18 @@ class Server::SyncRequestThreadManager : public ThreadManager {
     }
   }
 
-  void ShutdownAndDrainCompletionQueue() {
+  void Shutdown() override {
     server_cq_->Shutdown();
+    ThreadManager::Shutdown();
+  }
 
+  void Wait() override {
+    ThreadManager::Wait();
     // Drain any pending items from the queue
     void* tag;
     bool ok;
     while (server_cq_->Next(&tag, &ok)) {
-      // Nothing to be done here
+      // Do nothing
     }
   }
 
@@ -415,7 +419,7 @@ Server::~Server() {
     } else if (!started_) {
       // Shutdown the completion queues
       for (auto it = sync_req_mgrs_.begin(); it != sync_req_mgrs_.end(); it++) {
-        (*it)->ShutdownAndDrainCompletionQueue();
+        (*it)->Shutdown();
       }
     }
   }
@@ -503,7 +507,7 @@ int Server::AddListeningPort(const grpc::string& addr,
                              ServerCredentials* creds) {
   GPR_ASSERT(!started_);
   int port = creds->AddPortToServer(addr, server_);
-  global_callbacks_->AddPort(this, port);
+  global_callbacks_->AddPort(this, addr, creds, port);
   return port;
 }
 
@@ -579,7 +583,6 @@ void Server::ShutdownInternal(gpr_timespec deadline) {
     // Wait for threads in all ThreadManagers to terminate
     for (auto it = sync_req_mgrs_.begin(); it != sync_req_mgrs_.end(); it++) {
       (*it)->Wait();
-      (*it)->ShutdownAndDrainCompletionQueue();
     }
 
     // Drain the shutdown queue (if the previous call to AsyncNext() timed out
@@ -604,7 +607,7 @@ void Server::PerformOpsOnCall(CallOpSetInterface* ops, Call* call) {
   static const size_t MAX_OPS = 8;
   size_t nops = 0;
   grpc_op cops[MAX_OPS];
-  ops->FillOps(cops, &nops);
+  ops->FillOps(call->call(), cops, &nops);
   auto result = grpc_call_start_batch(call->call(), cops, nops, ops, nullptr);
   GPR_ASSERT(GRPC_CALL_OK == result);
 }
diff --git a/src/cpp/server/server_context.cc b/src/cpp/server/server_context.cc
index afc9873c148ac9628282e3ba3985910ecc2c13c5..923556413e2156042823c99dd541886111c62cf5 100644
--- a/src/cpp/server/server_context.cc
+++ b/src/cpp/server/server_context.cc
@@ -62,7 +62,7 @@ class ServerContext::CompletionOp final : public CallOpSetInterface {
         finalized_(false),
         cancelled_(0) {}
 
-  void FillOps(grpc_op* ops, size_t* nops) override;
+  void FillOps(grpc_call* call, grpc_op* ops, size_t* nops) override;
   bool FinalizeResult(void** tag, bool* status) override;
 
   bool CheckCancelled(CompletionQueue* cq) {
@@ -100,7 +100,8 @@ void ServerContext::CompletionOp::Unref() {
   }
 }
 
-void ServerContext::CompletionOp::FillOps(grpc_op* ops, size_t* nops) {
+void ServerContext::CompletionOp::FillOps(grpc_call* call, grpc_op* ops,
+                                          size_t* nops) {
   ops->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
   ops->data.recv_close_on_server.cancelled = &cancelled_;
   ops->flags = 0;
@@ -151,7 +152,7 @@ ServerContext::ServerContext(gpr_timespec deadline, grpc_metadata_array* arr)
 
 ServerContext::~ServerContext() {
   if (call_) {
-    grpc_call_destroy(call_);
+    grpc_call_unref(call_);
   }
   if (completion_op_) {
     completion_op_->Unref();
@@ -229,17 +230,9 @@ const struct census_context* ServerContext::census_context() const {
 void ServerContext::SetLoadReportingCosts(
     const std::vector<grpc::string>& cost_data) {
   if (call_ == nullptr) return;
-  grpc_load_reporting_cost_context* cost_ctx =
-      static_cast<grpc_load_reporting_cost_context*>(
-          gpr_malloc(sizeof(*cost_ctx)));
-  cost_ctx->values_count = cost_data.size();
-  cost_ctx->values = static_cast<grpc_slice*>(
-      gpr_malloc(sizeof(*cost_ctx->values) * cost_ctx->values_count));
-  for (size_t i = 0; i < cost_ctx->values_count; ++i) {
-    cost_ctx->values[i] =
-        grpc_slice_from_copied_buffer(cost_data[i].data(), cost_data[i].size());
+  for (const auto& cost_datum : cost_data) {
+    AddTrailingMetadata(GRPC_LB_COST_MD_KEY, cost_datum);
   }
-  grpc_call_set_load_reporting_cost_context(call_, cost_ctx);
 }
 
 }  // namespace grpc
diff --git a/src/cpp/thread_manager/thread_manager.cc b/src/cpp/thread_manager/thread_manager.cc
index 1450d009e4f1c9929067aaa0054390245f68164d..a463a4388a4ba48517cb057c758dea72a00eb3e6 100644
--- a/src/cpp/thread_manager/thread_manager.cc
+++ b/src/cpp/thread_manager/thread_manager.cc
@@ -98,80 +98,78 @@ void ThreadManager::MarkAsCompleted(WorkerThread* thd) {
 }
 
 void ThreadManager::CleanupCompletedThreads() {
-  std::unique_lock<std::mutex> lock(list_mu_);
-  for (auto thd = completed_threads_.begin(); thd != completed_threads_.end();
-       thd = completed_threads_.erase(thd)) {
-    delete *thd;
+  std::list<WorkerThread*> completed_threads;
+  {
+    // swap out the completed threads list: allows other threads to clean up
+    // more quickly
+    std::unique_lock<std::mutex> lock(list_mu_);
+    completed_threads.swap(completed_threads_);
   }
+  for (auto thd : completed_threads) delete thd;
 }
 
 void ThreadManager::Initialize() {
-  for (int i = 0; i < min_pollers_; i++) {
-    MaybeCreatePoller();
-  }
-}
-
-// If the number of pollers (i.e threads currently blocked in PollForWork()) is
-// less than max threshold (i.e max_pollers_) and the total number of threads is
-// below the maximum threshold, we can let the current thread continue as poller
-bool ThreadManager::MaybeContinueAsPoller() {
-  std::unique_lock<std::mutex> lock(mu_);
-  if (shutdown_ || num_pollers_ > max_pollers_) {
-    return false;
+  {
+    std::unique_lock<std::mutex> lock(mu_);
+    num_pollers_ = min_pollers_;
+    num_threads_ = min_pollers_;
   }
 
-  num_pollers_++;
-  return true;
-}
-
-// Create a new poller if the current number of pollers i.e num_pollers_ (i.e
-// threads currently blocked in PollForWork()) is below the threshold (i.e
-// min_pollers_) and the total number of threads is below the maximum threshold
-void ThreadManager::MaybeCreatePoller() {
-  std::unique_lock<std::mutex> lock(mu_);
-  if (!shutdown_ && num_pollers_ < min_pollers_) {
-    num_pollers_++;
-    num_threads_++;
-
+  for (int i = 0; i < min_pollers_; i++) {
     // Create a new thread (which ends up calling the MainWorkLoop() function
     new WorkerThread(this);
   }
 }
 
 void ThreadManager::MainWorkLoop() {
-  void* tag;
-  bool ok;
-
-  /*
-   1. Poll for work (i.e PollForWork())
-   2. After returning from PollForWork, reduce the number of pollers by 1. If
-      PollForWork() returned a TIMEOUT, then it may indicate that we have more
-      polling threads than needed. Check if the number of pollers is greater
-      than min_pollers and if so, terminate the thread.
-   3. Since we are short of one poller now, see if a new poller has to be
-      created (i.e see MaybeCreatePoller() for more details)
-   4. Do the actual work (DoWork())
-   5. After doing the work, see it this thread can resume polling work (i.e
-      see MaybeContinueAsPoller() for more details) */
-  do {
+  while (true) {
+    void* tag;
+    bool ok;
     WorkStatus work_status = PollForWork(&tag, &ok);
 
-    {
-      std::unique_lock<std::mutex> lock(mu_);
-      num_pollers_--;
-
-      if (work_status == TIMEOUT && num_pollers_ > min_pollers_) {
+    std::unique_lock<std::mutex> lock(mu_);
+    // Reduce the number of pollers by 1 and check what happened with the poll
+    num_pollers_--;
+    bool done = false;
+    switch (work_status) {
+      case TIMEOUT:
+        // If we timed out and we have more pollers than we need (or we are
+        // shutdown), finish this thread
+        if (shutdown_ || num_pollers_ > max_pollers_) done = true;
+        break;
+      case SHUTDOWN:
+        // If the thread manager is shutdown, finish this thread
+        done = true;
+        break;
+      case WORK_FOUND:
+        // If we got work and there are now insufficient pollers, start a new
+        // one
+        if (!shutdown_ && num_pollers_ < min_pollers_) {
+          num_pollers_++;
+          num_threads_++;
+          // Drop lock before spawning thread to avoid contention
+          lock.unlock();
+          new WorkerThread(this);
+        } else {
+          // Drop lock for consistency with above branch
+          lock.unlock();
+        }
+        // Lock is always released at this point - do the application work
+        DoWork(tag, ok);
+        // Take the lock again to check post conditions
+        lock.lock();
+        // If we're shutdown, we should finish at this point.
+        if (shutdown_) done = true;
         break;
-      }
-    }
-
-    // Note that MaybeCreatePoller does check for shutdown and creates a new
-    // thread only if ThreadManager is not shutdown
-    if (work_status == WORK_FOUND) {
-      MaybeCreatePoller();
-      DoWork(tag, ok);
     }
-  } while (MaybeContinueAsPoller());
+    // If we decided to finish the thread, break out of the while loop
+    if (done) break;
+    // ... otherwise increase poller count and continue
+    // There's a chance that we'll exceed the max poller count: that is
+    // explicitly ok - we'll decrease after one poll timeout, and prevent
+    // some thrashing starting up and shutting down threads
+    num_pollers_++;
+  };
 
   CleanupCompletedThreads();
 
diff --git a/src/cpp/thread_manager/thread_manager.h b/src/cpp/thread_manager/thread_manager.h
index 9c0569c62c16048767f197c7aa10967640969d17..d1050f6dede0496593d4810b10d05430d300f9fa 100644
--- a/src/cpp/thread_manager/thread_manager.h
+++ b/src/cpp/thread_manager/thread_manager.h
@@ -89,14 +89,14 @@ class ThreadManager {
   // Mark the ThreadManager as shutdown and begin draining the work. This is a
   // non-blocking call and the caller should call Wait(), a blocking call which
   // returns only once the shutdown is complete
-  void Shutdown();
+  virtual void Shutdown();
 
   // Has Shutdown() been called
   bool IsShutdown();
 
   // A blocking call that returns only after the ThreadManager has shutdown and
   // all the threads have drained all the outstanding work
-  void Wait();
+  virtual void Wait();
 
  private:
   // Helper wrapper class around std::thread. This takes a ThreadManager object
@@ -122,14 +122,6 @@ class ThreadManager {
   // The main funtion in ThreadManager
   void MainWorkLoop();
 
-  // Create a new poller if the number of current pollers is less than the
-  // minimum number of pollers needed (i.e min_pollers).
-  void MaybeCreatePoller();
-
-  // Returns true if the current thread can resume as a poller. i.e if the
-  // current number of pollers is less than the max_pollers.
-  bool MaybeContinueAsPoller();
-
   void MarkAsCompleted(WorkerThread* thd);
   void CleanupCompletedThreads();
 
diff --git a/src/csharp/Grpc.Core.Tests/AppDomainUnloadTest.cs b/src/csharp/Grpc.Core.Tests/AppDomainUnloadTest.cs
index d7ebdb4201e7303e00fb829d5dc53cc716fed5ec..7858e77b2788c8cf528a06a24076f2c389ca0a76 100644
--- a/src/csharp/Grpc.Core.Tests/AppDomainUnloadTest.cs
+++ b/src/csharp/Grpc.Core.Tests/AppDomainUnloadTest.cs
@@ -72,10 +72,6 @@ namespace Grpc.Core.Tests
             public AppDomainTestClass()
             {
                 var helper = new MockServiceHelper(Host);
-                var server = helper.GetServer();
-                server.Start();
-                var channel = helper.GetChannel();
-
                 var readyToShutdown = new TaskCompletionSource<object>();
                 helper.DuplexStreamingHandler = new DuplexStreamingServerMethod<string, string>(async (requestStream, responseStream, context) =>
                 {
@@ -83,6 +79,10 @@ namespace Grpc.Core.Tests
                     await requestStream.ToListAsync();
                 });
 
+                var server = helper.GetServer();
+                server.Start();
+                var channel = helper.GetChannel();
+
                 var call = Calls.AsyncDuplexStreamingCall(helper.CreateDuplexStreamingCall());
                 readyToShutdown.Task.Wait();  // make sure handler is running
             }
diff --git a/src/csharp/Grpc.Core.Tests/MockServiceHelper.cs b/src/csharp/Grpc.Core.Tests/MockServiceHelper.cs
index 4d904700569220460580cd0ad5f129b53767aadc..c57c260c960e9976cf06082b9cc132f1d7865382 100644
--- a/src/csharp/Grpc.Core.Tests/MockServiceHelper.cs
+++ b/src/csharp/Grpc.Core.Tests/MockServiceHelper.cs
@@ -141,7 +141,8 @@ namespace Grpc.Core.Tests
         {
             if (server == null)
             {
-                server = new Server
+                // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755
+                server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
                 {
                     Services = { serviceDefinition },
                     Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
diff --git a/src/csharp/Grpc.Core.Tests/UserAgentStringTest.cs b/src/csharp/Grpc.Core.Tests/UserAgentStringTest.cs
index cc830086a67d3b7f4444262fe03bf0dbbc1154a0..74b4997f69e784af623cd1d98ef3ff58b1fb7d49 100644
--- a/src/csharp/Grpc.Core.Tests/UserAgentStringTest.cs
+++ b/src/csharp/Grpc.Core.Tests/UserAgentStringTest.cs
@@ -63,10 +63,6 @@ namespace Grpc.Core.Tests
         public void DefaultUserAgentString()
         {
             helper = new MockServiceHelper(Host);
-            server = helper.GetServer();
-            server.Start();
-            channel = helper.GetChannel();
-
             helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
             {
                 var userAgentString = context.RequestHeaders.First(m => (m.Key == "user-agent")).Value;
@@ -75,6 +71,11 @@ namespace Grpc.Core.Tests
                 Assert.IsTrue(parts[1].StartsWith("grpc-c/"));
                 return Task.FromResult("PASS");
             });
+
+            server = helper.GetServer();
+            server.Start();
+            channel = helper.GetChannel();
+
             Assert.AreEqual("PASS", Calls.BlockingUnaryCall(helper.CreateUnaryCall(), ""));
         }
 
@@ -83,11 +84,6 @@ namespace Grpc.Core.Tests
         {
             helper = new MockServiceHelper(Host,
                 channelOptions: new[] { new ChannelOption(ChannelOptions.PrimaryUserAgentString, "XYZ") });
-            server = helper.GetServer();
-            server.Start();
-            channel = helper.GetChannel();
-            
-            channel = helper.GetChannel();
             helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
             {
                 var userAgentString = context.RequestHeaders.First(m => (m.Key == "user-agent")).Value;
@@ -95,6 +91,11 @@ namespace Grpc.Core.Tests
                 Assert.AreEqual("XYZ", parts[0]);
                 return Task.FromResult("PASS");
             });
+
+            server = helper.GetServer();
+            server.Start();
+            channel = helper.GetChannel();
+
             Assert.AreEqual("PASS", Calls.BlockingUnaryCall(helper.CreateUnaryCall(), ""));
         }
     }
diff --git a/src/csharp/Grpc.Core/ChannelOptions.cs b/src/csharp/Grpc.Core/ChannelOptions.cs
index 46a2c6695f6ee1a3cc4d81c3b57c93efb7a08584..5de9b1ee3c43e67067d28cd4297d093b990056cb 100644
--- a/src/csharp/Grpc.Core/ChannelOptions.cs
+++ b/src/csharp/Grpc.Core/ChannelOptions.cs
@@ -172,6 +172,9 @@ namespace Grpc.Core
         /// <summary>Secondary user agent: goes at the end of the user-agent metadata</summary>
         public const string SecondaryUserAgentString = "grpc.secondary_user_agent";
 
+        /// <summary>If non-zero, allow the use of SO_REUSEPORT for server if it's available (default 1)</summary>
+        public const string SoReuseport = "grpc.so_reuseport";
+
         /// <summary>
         /// Creates native object for a collection of channel options.
         /// </summary>
diff --git a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
index 50dacc2eaaf258ad28a01518e1afb59653f4e49c..02bcd18cb5573dbcc69468b637637722e3809361 100644
--- a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
+++ b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
@@ -55,7 +55,8 @@ namespace Math.Tests
         [TestFixtureSetUp]
         public void Init()
         {
-            server = new Server
+            // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755
+            server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
             {
                 Services = { Math.BindService(new MathServiceImpl()) },
                 Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
diff --git a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
index 25a58fb3864a67281cf0140d9d7ed3e7607b6322..0ebc3c33700ab4630c23033d71acf3b290798788 100644
--- a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
+++ b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
@@ -57,7 +57,8 @@ namespace Grpc.HealthCheck.Tests
         {
             serviceImpl = new HealthServiceImpl();
 
-            server = new Server
+            // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755
+            server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
             {
                 Services = { Grpc.Health.V1.Health.BindService(serviceImpl) },
                 Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
diff --git a/src/csharp/Grpc.IntegrationTesting/GeneratedServiceBaseTest.cs b/src/csharp/Grpc.IntegrationTesting/GeneratedServiceBaseTest.cs
index 4216dc1d6be6813646dde7c8c807431c983e9f5d..780a9b73047257ba0b3b1f5cb89b59dc1c77a1ea 100644
--- a/src/csharp/Grpc.IntegrationTesting/GeneratedServiceBaseTest.cs
+++ b/src/csharp/Grpc.IntegrationTesting/GeneratedServiceBaseTest.cs
@@ -54,7 +54,8 @@ namespace Grpc.IntegrationTesting
         [SetUp]
         public void Init()
         {
-            server = new Server
+            // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755
+            server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
             {
                 Services = { TestService.BindService(new UnimplementedTestServiceImpl()) },
                 Ports = { { Host, ServerPort.PickUnused, SslServerCredentials.Insecure } }
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs b/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs
index 4960a53f92d6c3ca9ec43ada9277899c79368020..04f833fcf5e8ec53c31416a0a4fd1100f561757e 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs
@@ -56,7 +56,8 @@ namespace Grpc.IntegrationTesting
         [TestFixtureSetUp]
         public void Init()
         {
-            server = new Server
+            // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755
+            server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
             {
                 Services = { TestService.BindService(new TestServiceImpl()) },
                 Ports = { { Host, ServerPort.PickUnused, TestCredentials.CreateSslServerCredentials() } }
diff --git a/src/csharp/Grpc.IntegrationTesting/MetadataCredentialsTest.cs b/src/csharp/Grpc.IntegrationTesting/MetadataCredentialsTest.cs
index d55e658d949d482f5f25c6cc8c54466188e12cbf..ef63f530f68dd9d8a78ced9e5722f8295f197288 100644
--- a/src/csharp/Grpc.IntegrationTesting/MetadataCredentialsTest.cs
+++ b/src/csharp/Grpc.IntegrationTesting/MetadataCredentialsTest.cs
@@ -56,7 +56,8 @@ namespace Grpc.IntegrationTesting
         [SetUp]
         public void Init()
         {
-            server = new Server
+            // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755
+            server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
             {
                 Services = { TestService.BindService(new FakeTestService()) },
                 Ports = { { Host, ServerPort.PickUnused, TestCredentials.CreateSslServerCredentials() } }
diff --git a/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs b/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs
index 377dad63f400abc3723b8a405a797586eb457776..48ecc2344fcd511e9e4126d00306881d8e2a2574 100644
--- a/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs
+++ b/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs
@@ -67,7 +67,8 @@ namespace Grpc.IntegrationTesting
             var serverCredentials = new SslServerCredentials(new[] { keyCertPair }, rootCert, true);
             var clientCredentials = new SslCredentials(rootCert, keyCertPair);
 
-            server = new Server
+            // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755
+            server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
             {
                 Services = { TestService.BindService(new SslCredentialsTestServiceImpl()) },
                 Ports = { { Host, ServerPort.PickUnused, serverCredentials } }
diff --git a/src/csharp/Grpc.Reflection.Tests/ReflectionClientServerTest.cs b/src/csharp/Grpc.Reflection.Tests/ReflectionClientServerTest.cs
index 1d0845e276cd141516ce485afb3e025a2db5a6c7..22edbed04027f2152c71bb3640199a974280055e 100644
--- a/src/csharp/Grpc.Reflection.Tests/ReflectionClientServerTest.cs
+++ b/src/csharp/Grpc.Reflection.Tests/ReflectionClientServerTest.cs
@@ -58,7 +58,8 @@ namespace Grpc.Reflection.Tests
         {
             serviceImpl = new ReflectionServiceImpl(ServerReflection.Descriptor);
 
-            server = new Server
+            // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755
+            server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
             {
                 Services = { ServerReflection.BindService(serviceImpl) },
                 Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
diff --git a/src/csharp/ext/grpc_csharp_ext.c b/src/csharp/ext/grpc_csharp_ext.c
index 27de7bc11f1e92979ba90b37c3952706f8540ca1..f6cff454bdba59d2b94e452b60bb4edb33e72503 100644
--- a/src/csharp/ext/grpc_csharp_ext.c
+++ b/src/csharp/ext/grpc_csharp_ext.c
@@ -34,14 +34,14 @@
 #include "src/core/lib/support/string.h"
 
 #include <grpc/byte_buffer_reader.h>
-#include <grpc/support/port_platform.h>
+#include <grpc/grpc.h>
+#include <grpc/grpc_security.h>
+#include <grpc/slice.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/slice.h>
+#include <grpc/support/port_platform.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/thd.h>
-#include <grpc/grpc.h>
-#include <grpc/grpc_security.h>
 
 #include <string.h>
 
@@ -84,7 +84,8 @@ typedef struct grpcsharp_batch_context {
   int recv_close_on_server_cancelled;
 } grpcsharp_batch_context;
 
-GPR_EXPORT grpcsharp_batch_context *GPR_CALLTYPE grpcsharp_batch_context_create() {
+GPR_EXPORT grpcsharp_batch_context *GPR_CALLTYPE
+grpcsharp_batch_context_create() {
   grpcsharp_batch_context *ctx = gpr_malloc(sizeof(grpcsharp_batch_context));
   memset(ctx, 0, sizeof(grpcsharp_batch_context));
   return ctx;
@@ -96,8 +97,10 @@ typedef struct {
   grpc_metadata_array request_metadata;
 } grpcsharp_request_call_context;
 
-GPR_EXPORT grpcsharp_request_call_context *GPR_CALLTYPE grpcsharp_request_call_context_create() {
-  grpcsharp_request_call_context *ctx = gpr_malloc(sizeof(grpcsharp_request_call_context));
+GPR_EXPORT grpcsharp_request_call_context *GPR_CALLTYPE
+grpcsharp_request_call_context_create() {
+  grpcsharp_request_call_context *ctx =
+      gpr_malloc(sizeof(grpcsharp_request_call_context));
   memset(ctx, 0, sizeof(grpcsharp_request_call_context));
   return ctx;
 }
@@ -175,15 +178,15 @@ grpcsharp_metadata_array_count(grpc_metadata_array *array) {
   return (intptr_t)array->count;
 }
 
-GPR_EXPORT const char *GPR_CALLTYPE
-grpcsharp_metadata_array_get_key(grpc_metadata_array *array, size_t index, size_t *key_length) {
+GPR_EXPORT const char *GPR_CALLTYPE grpcsharp_metadata_array_get_key(
+    grpc_metadata_array *array, size_t index, size_t *key_length) {
   GPR_ASSERT(index < array->count);
   *key_length = GRPC_SLICE_LENGTH(array->metadata[index].key);
   return (char *)GRPC_SLICE_START_PTR(array->metadata[index].key);
 }
 
-GPR_EXPORT const char *GPR_CALLTYPE
-grpcsharp_metadata_array_get_value(grpc_metadata_array *array, size_t index, size_t *value_length) {
+GPR_EXPORT const char *GPR_CALLTYPE grpcsharp_metadata_array_get_value(
+    grpc_metadata_array *array, size_t index, size_t *value_length) {
   GPR_ASSERT(index < array->count);
   *value_length = GRPC_SLICE_LENGTH(array->metadata[index].value);
   return (char *)GRPC_SLICE_START_PTR(array->metadata[index].value);
@@ -208,7 +211,8 @@ void grpcsharp_metadata_array_move(grpc_metadata_array *dest,
   src->metadata = NULL;
 }
 
-GPR_EXPORT void GPR_CALLTYPE grpcsharp_batch_context_destroy(grpcsharp_batch_context *ctx) {
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_batch_context_destroy(grpcsharp_batch_context *ctx) {
   if (!ctx) {
     return;
   }
@@ -231,7 +235,8 @@ GPR_EXPORT void GPR_CALLTYPE grpcsharp_batch_context_destroy(grpcsharp_batch_con
   gpr_free(ctx);
 }
 
-GPR_EXPORT void GPR_CALLTYPE grpcsharp_request_call_context_destroy(grpcsharp_request_call_context *ctx) {
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_request_call_context_destroy(grpcsharp_request_call_context *ctx) {
   if (!ctx) {
     return;
   }
@@ -240,8 +245,7 @@ GPR_EXPORT void GPR_CALLTYPE grpcsharp_request_call_context_destroy(grpcsharp_re
      to take its ownership. */
 
   grpc_call_details_destroy(&(ctx->call_details));
-  grpcsharp_metadata_array_destroy_metadata_only(
-      &(ctx->request_metadata));
+  grpcsharp_metadata_array_destroy_metadata_only(&(ctx->request_metadata));
 
   gpr_free(ctx);
 }
@@ -299,8 +303,10 @@ grpcsharp_batch_context_recv_status_on_client_status(
 GPR_EXPORT const char *GPR_CALLTYPE
 grpcsharp_batch_context_recv_status_on_client_details(
     const grpcsharp_batch_context *ctx, size_t *details_length) {
-  *details_length = GRPC_SLICE_LENGTH(ctx->recv_status_on_client.status_details);
-  return (char *)GRPC_SLICE_START_PTR(ctx->recv_status_on_client.status_details);
+  *details_length =
+      GRPC_SLICE_LENGTH(ctx->recv_status_on_client.status_details);
+  return (char *)GRPC_SLICE_START_PTR(
+      ctx->recv_status_on_client.status_details);
 }
 
 GPR_EXPORT const grpc_metadata_array *GPR_CALLTYPE
@@ -309,13 +315,12 @@ grpcsharp_batch_context_recv_status_on_client_trailing_metadata(
   return &(ctx->recv_status_on_client.trailing_metadata);
 }
 
-GPR_EXPORT grpc_call *GPR_CALLTYPE grpcsharp_request_call_context_call(
-    const grpcsharp_request_call_context *ctx) {
+GPR_EXPORT grpc_call *GPR_CALLTYPE
+grpcsharp_request_call_context_call(const grpcsharp_request_call_context *ctx) {
   return ctx->call;
 }
 
-GPR_EXPORT const char *GPR_CALLTYPE
-grpcsharp_request_call_context_method(
+GPR_EXPORT const char *GPR_CALLTYPE grpcsharp_request_call_context_method(
     const grpcsharp_request_call_context *ctx, size_t *method_length) {
   *method_length = GRPC_SLICE_LENGTH(ctx->call_details.method);
   return (char *)GRPC_SLICE_START_PTR(ctx->call_details.method);
@@ -327,8 +332,7 @@ GPR_EXPORT const char *GPR_CALLTYPE grpcsharp_request_call_context_host(
   return (char *)GRPC_SLICE_START_PTR(ctx->call_details.host);
 }
 
-GPR_EXPORT gpr_timespec GPR_CALLTYPE
-grpcsharp_request_call_context_deadline(
+GPR_EXPORT gpr_timespec GPR_CALLTYPE grpcsharp_request_call_context_deadline(
     const grpcsharp_request_call_context *ctx) {
   return ctx->call_details.deadline;
 }
@@ -342,7 +346,7 @@ grpcsharp_request_call_context_request_metadata(
 GPR_EXPORT int32_t GPR_CALLTYPE
 grpcsharp_batch_context_recv_close_on_server_cancelled(
     const grpcsharp_batch_context *ctx) {
-  return (int32_t) ctx->recv_close_on_server_cancelled;
+  return (int32_t)ctx->recv_close_on_server_cancelled;
 }
 
 /* Init & shutdown */
@@ -389,7 +393,8 @@ grpcsharp_completion_queue_pluck(grpc_completion_queue *cq, void *tag) {
 
 GPR_EXPORT grpc_channel *GPR_CALLTYPE
 
-grpcsharp_insecure_channel_create(const char *target, const grpc_channel_args *args) {
+grpcsharp_insecure_channel_create(const char *target,
+                                  const grpc_channel_args *args) {
   return grpc_insecure_channel_create(target, args, NULL);
 }
 
@@ -397,12 +402,10 @@ GPR_EXPORT void GPR_CALLTYPE grpcsharp_channel_destroy(grpc_channel *channel) {
   grpc_channel_destroy(channel);
 }
 
-GPR_EXPORT grpc_call *GPR_CALLTYPE
-grpcsharp_channel_create_call(grpc_channel *channel, grpc_call *parent_call,
-                              uint32_t propagation_mask,
-                              grpc_completion_queue *cq,
-                              const char *method, const char *host,
-                              gpr_timespec deadline) {
+GPR_EXPORT grpc_call *GPR_CALLTYPE grpcsharp_channel_create_call(
+    grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask,
+    grpc_completion_queue *cq, const char *method, const char *host,
+    gpr_timespec deadline) {
   grpc_slice method_slice = grpc_slice_from_copied_string(method);
   grpc_slice *host_slice_ptr = NULL;
   grpc_slice host_slice;
@@ -415,18 +418,21 @@ grpcsharp_channel_create_call(grpc_channel *channel, grpc_call *parent_call,
 }
 
 GPR_EXPORT grpc_connectivity_state GPR_CALLTYPE
-grpcsharp_channel_check_connectivity_state(grpc_channel *channel, int32_t try_to_connect) {
+grpcsharp_channel_check_connectivity_state(grpc_channel *channel,
+                                           int32_t try_to_connect) {
   return grpc_channel_check_connectivity_state(channel, try_to_connect);
 }
 
 GPR_EXPORT void GPR_CALLTYPE grpcsharp_channel_watch_connectivity_state(
     grpc_channel *channel, grpc_connectivity_state last_observed_state,
-    gpr_timespec deadline, grpc_completion_queue *cq, grpcsharp_batch_context *ctx) {
-  grpc_channel_watch_connectivity_state(channel, last_observed_state,
-                                        deadline, cq, ctx);
+    gpr_timespec deadline, grpc_completion_queue *cq,
+    grpcsharp_batch_context *ctx) {
+  grpc_channel_watch_connectivity_state(channel, last_observed_state, deadline,
+                                        cq, ctx);
 }
 
-GPR_EXPORT char *GPR_CALLTYPE grpcsharp_channel_get_target(grpc_channel *channel) {
+GPR_EXPORT char *GPR_CALLTYPE
+grpcsharp_channel_get_target(grpc_channel *channel) {
   return grpc_channel_get_target(channel);
 }
 
@@ -444,9 +450,8 @@ grpcsharp_channel_args_create(size_t num_args) {
   return args;
 }
 
-GPR_EXPORT void GPR_CALLTYPE
-grpcsharp_channel_args_set_string(grpc_channel_args *args, size_t index,
-                                  const char *key, const char *value) {
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_channel_args_set_string(
+    grpc_channel_args *args, size_t index, const char *key, const char *value) {
   GPR_ASSERT(args);
   GPR_ASSERT(index < args->num_args);
   args->args[index].type = GRPC_ARG_STRING;
@@ -454,9 +459,8 @@ grpcsharp_channel_args_set_string(grpc_channel_args *args, size_t index,
   args->args[index].value.string = gpr_strdup(value);
 }
 
-GPR_EXPORT void GPR_CALLTYPE
-grpcsharp_channel_args_set_integer(grpc_channel_args *args, size_t index,
-                                  const char *key, int value) {
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_channel_args_set_integer(
+    grpc_channel_args *args, size_t index, const char *key, int value) {
   GPR_ASSERT(args);
   GPR_ASSERT(index < args->num_args);
   args->args[index].type = GRPC_ARG_INTEGER;
@@ -485,15 +489,18 @@ GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_now(gpr_clock_type clock_type) {
   return gpr_now(clock_type);
 }
 
-GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_inf_future(gpr_clock_type clock_type) {
+GPR_EXPORT gpr_timespec GPR_CALLTYPE
+gprsharp_inf_future(gpr_clock_type clock_type) {
   return gpr_inf_future(clock_type);
 }
 
-GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_inf_past(gpr_clock_type clock_type) {
+GPR_EXPORT gpr_timespec GPR_CALLTYPE
+gprsharp_inf_past(gpr_clock_type clock_type) {
   return gpr_inf_past(clock_type);
 }
 
-GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_convert_clock_type(gpr_timespec t, gpr_clock_type target_clock) {
+GPR_EXPORT gpr_timespec GPR_CALLTYPE
+gprsharp_convert_clock_type(gpr_timespec t, gpr_clock_type target_clock) {
   return gpr_convert_clock_type(t, target_clock);
 }
 
@@ -507,9 +514,8 @@ GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_cancel(grpc_call *call) {
   return grpc_call_cancel(call, NULL);
 }
 
-GPR_EXPORT grpc_call_error GPR_CALLTYPE
-grpcsharp_call_cancel_with_status(grpc_call *call, grpc_status_code status,
-                                  const char *description) {
+GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_cancel_with_status(
+    grpc_call *call, grpc_status_code status, const char *description) {
   return grpc_call_cancel_with_status(call, status, description, NULL);
 }
 
@@ -517,18 +523,16 @@ GPR_EXPORT char *GPR_CALLTYPE grpcsharp_call_get_peer(grpc_call *call) {
   return grpc_call_get_peer(call);
 }
 
-GPR_EXPORT void GPR_CALLTYPE gprsharp_free(void *p) {
-  gpr_free(p);
-}
+GPR_EXPORT void GPR_CALLTYPE gprsharp_free(void *p) { gpr_free(p); }
 
 GPR_EXPORT void GPR_CALLTYPE grpcsharp_call_destroy(grpc_call *call) {
-  grpc_call_destroy(call);
+  grpc_call_unref(call);
 }
 
-GPR_EXPORT grpc_call_error GPR_CALLTYPE
-grpcsharp_call_start_unary(grpc_call *call, grpcsharp_batch_context *ctx,
-                           const char *send_buffer, size_t send_buffer_len, uint32_t write_flags,
-                           grpc_metadata_array *initial_metadata, uint32_t initial_metadata_flags) {
+GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_start_unary(
+    grpc_call *call, grpcsharp_batch_context *ctx, const char *send_buffer,
+    size_t send_buffer_len, uint32_t write_flags,
+    grpc_metadata_array *initial_metadata, uint32_t initial_metadata_flags) {
   /* TODO: don't use magic number */
   grpc_op ops[6];
   memset(ops, 0, sizeof(ops));
@@ -576,11 +580,9 @@ grpcsharp_call_start_unary(grpc_call *call, grpcsharp_batch_context *ctx,
                                NULL);
 }
 
-GPR_EXPORT grpc_call_error GPR_CALLTYPE
-grpcsharp_call_start_client_streaming(grpc_call *call,
-                                      grpcsharp_batch_context *ctx,
-                                      grpc_metadata_array *initial_metadata,
-                                      uint32_t initial_metadata_flags) {
+GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_start_client_streaming(
+    grpc_call *call, grpcsharp_batch_context *ctx,
+    grpc_metadata_array *initial_metadata, uint32_t initial_metadata_flags) {
   /* TODO: don't use magic number */
   grpc_op ops[4];
   memset(ops, 0, sizeof(ops));
@@ -658,11 +660,9 @@ GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_start_server_streaming(
                                NULL);
 }
 
-GPR_EXPORT grpc_call_error GPR_CALLTYPE
-grpcsharp_call_start_duplex_streaming(grpc_call *call,
-                                      grpcsharp_batch_context *ctx,
-                                      grpc_metadata_array *initial_metadata,
-                                      uint32_t initial_metadata_flags) {
+GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_start_duplex_streaming(
+    grpc_call *call, grpcsharp_batch_context *ctx,
+    grpc_metadata_array *initial_metadata, uint32_t initial_metadata_flags) {
   /* TODO: don't use magic number */
   grpc_op ops[2];
   memset(ops, 0, sizeof(ops));
@@ -690,7 +690,7 @@ grpcsharp_call_start_duplex_streaming(grpc_call *call,
 }
 
 GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_recv_initial_metadata(
-  grpc_call *call, grpcsharp_batch_context *ctx) {
+    grpc_call *call, grpcsharp_batch_context *ctx) {
   /* TODO: don't use magic number */
   grpc_op ops[1];
   ops[0].op = GRPC_OP_RECV_INITIAL_METADATA;
@@ -700,14 +700,13 @@ GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_recv_initial_metadata(
   ops[0].reserved = NULL;
 
   return grpc_call_start_batch(call, ops, sizeof(ops) / sizeof(ops[0]), ctx,
-    NULL);
+                               NULL);
 }
 
-GPR_EXPORT grpc_call_error GPR_CALLTYPE
-grpcsharp_call_send_message(grpc_call *call, grpcsharp_batch_context *ctx,
-                            const char *send_buffer, size_t send_buffer_len,
-                            uint32_t write_flags,
-                            int32_t send_empty_initial_metadata) {
+GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_send_message(
+    grpc_call *call, grpcsharp_batch_context *ctx, const char *send_buffer,
+    size_t send_buffer_len, uint32_t write_flags,
+    int32_t send_empty_initial_metadata) {
   /* TODO: don't use magic number */
   grpc_op ops[2];
   memset(ops, 0, sizeof(ops));
@@ -724,9 +723,8 @@ grpcsharp_call_send_message(grpc_call *call, grpcsharp_batch_context *ctx,
   return grpc_call_start_batch(call, ops, nops, ctx, NULL);
 }
 
-GPR_EXPORT grpc_call_error GPR_CALLTYPE
-grpcsharp_call_send_close_from_client(grpc_call *call,
-                                      grpcsharp_batch_context *ctx) {
+GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_send_close_from_client(
+    grpc_call *call, grpcsharp_batch_context *ctx) {
   /* TODO: don't use magic number */
   grpc_op ops[1];
   ops[0].op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
@@ -740,14 +738,15 @@ grpcsharp_call_send_close_from_client(grpc_call *call,
 GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_send_status_from_server(
     grpc_call *call, grpcsharp_batch_context *ctx, grpc_status_code status_code,
     const char *status_details, size_t status_details_len,
-    grpc_metadata_array *trailing_metadata,
-    int32_t send_empty_initial_metadata, const char* optional_send_buffer,
-    size_t optional_send_buffer_len, uint32_t write_flags) {
+    grpc_metadata_array *trailing_metadata, int32_t send_empty_initial_metadata,
+    const char *optional_send_buffer, size_t optional_send_buffer_len,
+    uint32_t write_flags) {
   /* TODO: don't use magic number */
   grpc_op ops[3];
   memset(ops, 0, sizeof(ops));
   size_t nops = 1;
-  grpc_slice status_details_slice = grpc_slice_from_copied_buffer(status_details, status_details_len);
+  grpc_slice status_details_slice =
+      grpc_slice_from_copied_buffer(status_details, status_details_len);
   ops[0].op = GRPC_OP_SEND_STATUS_FROM_SERVER;
   ops[0].data.send_status_from_server.status = status_code;
   ops[0].data.send_status_from_server.status_details = &status_details_slice;
@@ -761,8 +760,8 @@ GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_send_status_from_server(
   ops[0].reserved = NULL;
   if (optional_send_buffer) {
     ops[nops].op = GRPC_OP_SEND_MESSAGE;
-    ctx->send_message = string_to_byte_buffer(optional_send_buffer,
-                                              optional_send_buffer_len);
+    ctx->send_message =
+        string_to_byte_buffer(optional_send_buffer, optional_send_buffer_len);
     ops[nops].data.send_message.send_message = ctx->send_message;
     ops[nops].flags = write_flags;
     ops[nops].reserved = NULL;
@@ -803,10 +802,9 @@ grpcsharp_call_start_serverside(grpc_call *call, grpcsharp_batch_context *ctx) {
                                NULL);
 }
 
-GPR_EXPORT grpc_call_error GPR_CALLTYPE
-grpcsharp_call_send_initial_metadata(grpc_call *call,
-                                     grpcsharp_batch_context *ctx,
-                                     grpc_metadata_array *initial_metadata) {
+GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_send_initial_metadata(
+    grpc_call *call, grpcsharp_batch_context *ctx,
+    grpc_metadata_array *initial_metadata) {
   /* TODO: don't use magic number */
   grpc_op ops[1];
   memset(ops, 0, sizeof(ops));
@@ -823,9 +821,8 @@ grpcsharp_call_send_initial_metadata(grpc_call *call,
                                NULL);
 }
 
-GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_set_credentials(
-    grpc_call *call,
-    grpc_call_credentials *creds) {
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_set_credentials(grpc_call *call, grpc_call_credentials *creds) {
   return grpc_call_set_credentials(call, creds);
 }
 
@@ -836,14 +833,13 @@ grpcsharp_server_create(const grpc_channel_args *args) {
   return grpc_server_create(args, NULL);
 }
 
-GPR_EXPORT void GPR_CALLTYPE
-grpcsharp_server_register_completion_queue(grpc_server *server,
-                                           grpc_completion_queue *cq) {
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_server_register_completion_queue(
+    grpc_server *server, grpc_completion_queue *cq) {
   grpc_server_register_completion_queue(server, cq, NULL);
 }
 
-GPR_EXPORT int32_t GPR_CALLTYPE
-grpcsharp_server_add_insecure_http2_port(grpc_server *server, const char *addr) {
+GPR_EXPORT int32_t GPR_CALLTYPE grpcsharp_server_add_insecure_http2_port(
+    grpc_server *server, const char *addr) {
   return grpc_server_add_insecure_http2_port(server, addr);
 }
 
@@ -851,14 +847,14 @@ GPR_EXPORT void GPR_CALLTYPE grpcsharp_server_start(grpc_server *server) {
   grpc_server_start(server);
 }
 
-GPR_EXPORT void GPR_CALLTYPE
-grpcsharp_server_shutdown_and_notify_callback(grpc_server *server,
-                                              grpc_completion_queue *cq,
-                                              grpcsharp_batch_context *ctx) {
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_server_shutdown_and_notify_callback(
+    grpc_server *server, grpc_completion_queue *cq,
+    grpcsharp_batch_context *ctx) {
   grpc_server_shutdown_and_notify(server, cq, ctx);
 }
 
-GPR_EXPORT void GPR_CALLTYPE grpcsharp_server_cancel_all_calls(grpc_server *server) {
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_server_cancel_all_calls(grpc_server *server) {
   grpc_server_cancel_all_calls(server);
 }
 
@@ -869,9 +865,8 @@ GPR_EXPORT void GPR_CALLTYPE grpcsharp_server_destroy(grpc_server *server) {
 GPR_EXPORT grpc_call_error GPR_CALLTYPE
 grpcsharp_server_request_call(grpc_server *server, grpc_completion_queue *cq,
                               grpcsharp_request_call_context *ctx) {
-  return grpc_server_request_call(
-      server, &(ctx->call), &(ctx->call_details),
-      &(ctx->request_metadata), cq, cq, ctx);
+  return grpc_server_request_call(server, &(ctx->call), &(ctx->call_details),
+                                  &(ctx->request_metadata), cq, cq, ctx);
 }
 
 /* Security */
@@ -888,8 +883,8 @@ static grpc_ssl_roots_override_result override_ssl_roots_handler(
   return GRPC_SSL_ROOTS_OVERRIDE_OK;
 }
 
-GPR_EXPORT void GPR_CALLTYPE grpcsharp_override_default_ssl_roots(
-    const char *pem_root_certs) {
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_override_default_ssl_roots(const char *pem_root_certs) {
   /*
    * This currently wastes ~300kB of memory by keeping a copy of roots
    * in a static variable, but for desktop/server use, the overhead
@@ -916,20 +911,19 @@ grpcsharp_ssl_credentials_create(const char *pem_root_certs,
   }
 }
 
-GPR_EXPORT void GPR_CALLTYPE grpcsharp_channel_credentials_release(
-    grpc_channel_credentials *creds) {
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_channel_credentials_release(grpc_channel_credentials *creds) {
   grpc_channel_credentials_release(creds);
 }
 
-GPR_EXPORT void GPR_CALLTYPE grpcsharp_call_credentials_release(
-    grpc_call_credentials *creds) {
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_call_credentials_release(grpc_call_credentials *creds) {
   grpc_call_credentials_release(creds);
 }
 
-GPR_EXPORT grpc_channel *GPR_CALLTYPE
-grpcsharp_secure_channel_create(grpc_channel_credentials *creds,
-                                const char *target,
-                                const grpc_channel_args *args) {
+GPR_EXPORT grpc_channel *GPR_CALLTYPE grpcsharp_secure_channel_create(
+    grpc_channel_credentials *creds, const char *target,
+    const grpc_channel_args *args) {
   return grpc_secure_channel_create(creds, target, args, NULL);
 }
 
@@ -962,36 +956,36 @@ grpcsharp_ssl_server_credentials_create(
   return creds;
 }
 
-GPR_EXPORT void GPR_CALLTYPE grpcsharp_server_credentials_release(
-    grpc_server_credentials *creds) {
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_server_credentials_release(grpc_server_credentials *creds) {
   grpc_server_credentials_release(creds);
 }
 
-GPR_EXPORT int32_t GPR_CALLTYPE
-grpcsharp_server_add_secure_http2_port(grpc_server *server, const char *addr,
-                                       grpc_server_credentials *creds) {
+GPR_EXPORT int32_t GPR_CALLTYPE grpcsharp_server_add_secure_http2_port(
+    grpc_server *server, const char *addr, grpc_server_credentials *creds) {
   return grpc_server_add_secure_http2_port(server, addr, creds);
 }
 
-GPR_EXPORT grpc_channel_credentials *GPR_CALLTYPE grpcsharp_composite_channel_credentials_create(
-  grpc_channel_credentials *channel_creds,
-  grpc_call_credentials *call_creds) {
-  return grpc_composite_channel_credentials_create(channel_creds, call_creds, NULL);
+GPR_EXPORT grpc_channel_credentials *GPR_CALLTYPE
+grpcsharp_composite_channel_credentials_create(
+    grpc_channel_credentials *channel_creds,
+    grpc_call_credentials *call_creds) {
+  return grpc_composite_channel_credentials_create(channel_creds, call_creds,
+                                                   NULL);
 }
 
-GPR_EXPORT grpc_call_credentials *GPR_CALLTYPE grpcsharp_composite_call_credentials_create(
-  grpc_call_credentials *creds1,
-  grpc_call_credentials *creds2) {
+GPR_EXPORT grpc_call_credentials *GPR_CALLTYPE
+grpcsharp_composite_call_credentials_create(grpc_call_credentials *creds1,
+                                            grpc_call_credentials *creds2) {
   return grpc_composite_call_credentials_create(creds1, creds2, NULL);
 }
 
-
 /* Metadata credentials plugin */
 
 GPR_EXPORT void GPR_CALLTYPE grpcsharp_metadata_credentials_notify_from_plugin(
-    grpc_credentials_plugin_metadata_cb cb,
-    void *user_data, grpc_metadata_array *metadata,
-  grpc_status_code status, const char *error_details) {
+    grpc_credentials_plugin_metadata_cb cb, void *user_data,
+    grpc_metadata_array *metadata, grpc_status_code status,
+    const char *error_details) {
   if (metadata) {
     cb(user_data, metadata->metadata, metadata->count, status, error_details);
   } else {
@@ -1000,16 +994,17 @@ GPR_EXPORT void GPR_CALLTYPE grpcsharp_metadata_credentials_notify_from_plugin(
 }
 
 typedef void(GPR_CALLTYPE *grpcsharp_metadata_interceptor_func)(
-  void *state, const char *service_url, const char *method_name,
-  grpc_credentials_plugin_metadata_cb cb,
-  void *user_data, int32_t is_destroy);
+    void *state, const char *service_url, const char *method_name,
+    grpc_credentials_plugin_metadata_cb cb, void *user_data,
+    int32_t is_destroy);
 
 static void grpcsharp_get_metadata_handler(
     void *state, grpc_auth_metadata_context context,
     grpc_credentials_plugin_metadata_cb cb, void *user_data) {
   grpcsharp_metadata_interceptor_func interceptor =
       (grpcsharp_metadata_interceptor_func)(intptr_t)state;
-  interceptor(state, context.service_url, context.method_name, cb, user_data, 0);
+  interceptor(state, context.service_url, context.method_name, cb, user_data,
+              0);
 }
 
 static void grpcsharp_metadata_credentials_destroy_handler(void *state) {
@@ -1018,23 +1013,26 @@ static void grpcsharp_metadata_credentials_destroy_handler(void *state) {
   interceptor(state, NULL, NULL, NULL, NULL, 1);
 }
 
-GPR_EXPORT grpc_call_credentials *GPR_CALLTYPE grpcsharp_metadata_credentials_create_from_plugin(
-  grpcsharp_metadata_interceptor_func metadata_interceptor) {
+GPR_EXPORT grpc_call_credentials *GPR_CALLTYPE
+grpcsharp_metadata_credentials_create_from_plugin(
+    grpcsharp_metadata_interceptor_func metadata_interceptor) {
   grpc_metadata_credentials_plugin plugin;
   plugin.get_metadata = grpcsharp_get_metadata_handler;
   plugin.destroy = grpcsharp_metadata_credentials_destroy_handler;
-  plugin.state = (void*)(intptr_t)metadata_interceptor;
+  plugin.state = (void *)(intptr_t)metadata_interceptor;
   plugin.type = "";
   return grpc_metadata_credentials_create_from_plugin(plugin, NULL);
 }
 
 /* Auth context */
 
-GPR_EXPORT grpc_auth_context *GPR_CALLTYPE grpcsharp_call_auth_context(grpc_call *call) {
+GPR_EXPORT grpc_auth_context *GPR_CALLTYPE
+grpcsharp_call_auth_context(grpc_call *call) {
   return grpc_call_auth_context(call);
 }
 
-GPR_EXPORT const char *GPR_CALLTYPE grpcsharp_auth_context_peer_identity_property_name(
+GPR_EXPORT const char *GPR_CALLTYPE
+grpcsharp_auth_context_peer_identity_property_name(
     const grpc_auth_context *ctx) {
   return grpc_auth_context_peer_identity_property_name(ctx);
 }
@@ -1044,12 +1042,13 @@ grpcsharp_auth_context_property_iterator(const grpc_auth_context *ctx) {
   return grpc_auth_context_property_iterator(ctx);
 }
 
-GPR_EXPORT const grpc_auth_property *GPR_CALLTYPE grpcsharp_auth_property_iterator_next(
-    grpc_auth_property_iterator *it) {
+GPR_EXPORT const grpc_auth_property *GPR_CALLTYPE
+grpcsharp_auth_property_iterator_next(grpc_auth_property_iterator *it) {
   return grpc_auth_property_iterator_next(it);
 }
 
-GPR_EXPORT void GPR_CALLTYPE grpcsharp_auth_context_release(grpc_auth_context *ctx) {
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_auth_context_release(grpc_auth_context *ctx) {
   grpc_auth_context_release(ctx);
 }
 
diff --git a/src/node/ext/byte_buffer.cc b/src/node/ext/byte_buffer.cc
index a99b96bea54a47a6b19e4a9332b5bfb5eda404db..470c7ed90198b67b7df2aec8bce70a7da8064f24 100644
--- a/src/node/ext/byte_buffer.cc
+++ b/src/node/ext/byte_buffer.cc
@@ -33,10 +33,10 @@
 
 #include <string.h>
 
-#include <node.h>
 #include <nan.h>
-#include "grpc/grpc.h"
+#include <node.h>
 #include "grpc/byte_buffer_reader.h"
+#include "grpc/grpc.h"
 #include "grpc/slice.h"
 
 #include "byte_buffer.h"
diff --git a/src/node/ext/byte_buffer.h b/src/node/ext/byte_buffer.h
index e8c4ac90bdd42f0d402b5efbd4a94d0973b31c67..6cb7a2601bd97b6779cc5cd8f866d13206cc0aca 100644
--- a/src/node/ext/byte_buffer.h
+++ b/src/node/ext/byte_buffer.h
@@ -36,8 +36,8 @@
 
 #include <string.h>
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include "grpc/grpc.h"
 
 namespace grpc {
diff --git a/src/node/ext/call.cc b/src/node/ext/call.cc
index bd60775aad9f84d4ccf1dec910a1247b094a7c4f..fe0c80e64219256171a347a2eb15f90a577828b3 100644
--- a/src/node/ext/call.cc
+++ b/src/node/ext/call.cc
@@ -31,23 +31,23 @@
  *
  */
 
+#include <map>
 #include <memory>
 #include <vector>
-#include <map>
 
 #include <node.h>
 
-#include "grpc/support/log.h"
-#include "grpc/grpc.h"
-#include "grpc/grpc_security.h"
-#include "grpc/support/alloc.h"
-#include "grpc/support/time.h"
 #include "byte_buffer.h"
 #include "call.h"
+#include "call_credentials.h"
 #include "channel.h"
 #include "completion_queue.h"
 #include "completion_queue_async_worker.h"
-#include "call_credentials.h"
+#include "grpc/grpc.h"
+#include "grpc/grpc_security.h"
+#include "grpc/support/alloc.h"
+#include "grpc/support/log.h"
+#include "grpc/support/time.h"
 #include "slice.h"
 #include "timeval.h"
 
@@ -101,20 +101,20 @@ bool CreateMetadataArray(Local<Object> metadata, grpc_metadata_array *array) {
   HandleScope scope;
   Local<Array> keys = Nan::GetOwnPropertyNames(metadata).ToLocalChecked();
   for (unsigned int i = 0; i < keys->Length(); i++) {
-    Local<String> current_key = Nan::To<String>(
-        Nan::Get(keys, i).ToLocalChecked()).ToLocalChecked();
+    Local<String> current_key =
+        Nan::To<String>(Nan::Get(keys, i).ToLocalChecked()).ToLocalChecked();
     Local<Value> value_array = Nan::Get(metadata, current_key).ToLocalChecked();
     if (!value_array->IsArray()) {
       return false;
     }
     array->capacity += Local<Array>::Cast(value_array)->Length();
   }
-  array->metadata = reinterpret_cast<grpc_metadata*>(
+  array->metadata = reinterpret_cast<grpc_metadata *>(
       gpr_zalloc(array->capacity * sizeof(grpc_metadata)));
   for (unsigned int i = 0; i < keys->Length(); i++) {
     Local<String> current_key(Nan::To<String>(keys->Get(i)).ToLocalChecked());
-    Local<Array> values = Local<Array>::Cast(
-        Nan::Get(metadata, current_key).ToLocalChecked());
+    Local<Array> values =
+        Local<Array>::Cast(Nan::Get(metadata, current_key).ToLocalChecked());
     grpc_slice key_slice = CreateSliceFromString(current_key);
     grpc_slice key_intern_slice = grpc_slice_intern(key_slice);
     grpc_slice_unref(key_slice);
@@ -157,7 +157,7 @@ Local<Value> ParseMetadata(const grpc_metadata_array *metadata_array) {
   size_t length = metadata_array->count;
   Local<Object> metadata_object = Nan::New<Object>();
   for (unsigned int i = 0; i < length; i++) {
-    grpc_metadata* elem = &metadata_elements[i];
+    grpc_metadata *elem = &metadata_elements[i];
     // TODO(murgatroid99): Use zero-copy string construction instead
     Local<String> key_string = CopyStringFromSlice(elem->key);
     Local<Array> array;
@@ -183,17 +183,12 @@ Local<Value> Op::GetOpType() const {
   return scope.Escape(Nan::New(GetTypeString()).ToLocalChecked());
 }
 
-Op::~Op() {
-}
+Op::~Op() {}
 
 class SendMetadataOp : public Op {
  public:
-  SendMetadataOp() {
-    grpc_metadata_array_init(&send_metadata);
-  }
-  ~SendMetadataOp() {
-    DestroyMetadataArray(&send_metadata);
-  }
+  SendMetadataOp() { grpc_metadata_array_init(&send_metadata); }
+  ~SendMetadataOp() { DestroyMetadataArray(&send_metadata); }
   Local<Value> GetNodeValue() const {
     EscapableHandleScope scope;
     return scope.Escape(Nan::True());
@@ -206,32 +201,26 @@ class SendMetadataOp : public Op {
     if (maybe_metadata.IsEmpty()) {
       return false;
     }
-    if (!CreateMetadataArray(maybe_metadata.ToLocalChecked(),
-                             &send_metadata)) {
+    if (!CreateMetadataArray(maybe_metadata.ToLocalChecked(), &send_metadata)) {
       return false;
     }
     out->data.send_initial_metadata.count = send_metadata.count;
     out->data.send_initial_metadata.metadata = send_metadata.metadata;
     return true;
   }
-  bool IsFinalOp() {
-    return false;
-  }
-  void OnComplete(bool success) {
-  }
+  bool IsFinalOp() { return false; }
+  void OnComplete(bool success) {}
+
  protected:
-  std::string GetTypeString() const {
-    return "send_metadata";
-  }
+  std::string GetTypeString() const { return "send_metadata"; }
+
  private:
   grpc_metadata_array send_metadata;
 };
 
 class SendMessageOp : public Op {
  public:
-  SendMessageOp() {
-    send_message = NULL;
-  }
+  SendMessageOp() { send_message = NULL; }
   ~SendMessageOp() {
     if (send_message != NULL) {
       grpc_byte_buffer_destroy(send_message);
@@ -246,8 +235,8 @@ class SendMessageOp : public Op {
       return false;
     }
     Local<Object> object_value = Nan::To<Object>(value).ToLocalChecked();
-    MaybeLocal<Value> maybe_flag_value = Nan::Get(
-        object_value, Nan::New("grpcWriteFlags").ToLocalChecked());
+    MaybeLocal<Value> maybe_flag_value =
+        Nan::Get(object_value, Nan::New("grpcWriteFlags").ToLocalChecked());
     if (!maybe_flag_value.IsEmpty()) {
       Local<Value> flag_value = maybe_flag_value.ToLocalChecked();
       if (flag_value->IsUint32()) {
@@ -259,15 +248,13 @@ class SendMessageOp : public Op {
     out->data.send_message.send_message = send_message;
     return true;
   }
-  bool IsFinalOp() {
-    return false;
-  }
-  void OnComplete(bool success) {
-  }
+
+  bool IsFinalOp() { return false; }
+  void OnComplete(bool success) {}
+
  protected:
-  std::string GetTypeString() const {
-    return "send_message";
-  }
+  std::string GetTypeString() const { return "send_message"; }
+
  private:
   grpc_byte_buffer *send_message;
 };
@@ -278,25 +265,18 @@ class SendClientCloseOp : public Op {
     EscapableHandleScope scope;
     return scope.Escape(Nan::True());
   }
-  bool ParseOp(Local<Value> value, grpc_op *out) {
-    return true;
-  }
-  bool IsFinalOp() {
-    return false;
-  }
-  void OnComplete(bool success) {
-  }
+
+  bool ParseOp(Local<Value> value, grpc_op *out) { return true; }
+  bool IsFinalOp() { return false; }
+  void OnComplete(bool success) {}
+
  protected:
-  std::string GetTypeString() const {
-    return "client_close";
-  }
+  std::string GetTypeString() const { return "client_close"; }
 };
 
 class SendServerStatusOp : public Op {
  public:
-  SendServerStatusOp() {
-    grpc_metadata_array_init(&status_metadata);
-  }
+  SendServerStatusOp() { grpc_metadata_array_init(&status_metadata); }
   ~SendServerStatusOp() {
     grpc_slice_unref(details);
     DestroyMetadataArray(&status_metadata);
@@ -310,18 +290,18 @@ class SendServerStatusOp : public Op {
       return false;
     }
     Local<Object> server_status = Nan::To<Object>(value).ToLocalChecked();
-    MaybeLocal<Value> maybe_metadata = Nan::Get(
-        server_status, Nan::New("metadata").ToLocalChecked());
+    MaybeLocal<Value> maybe_metadata =
+        Nan::Get(server_status, Nan::New("metadata").ToLocalChecked());
     if (maybe_metadata.IsEmpty()) {
       return false;
     }
     if (!maybe_metadata.ToLocalChecked()->IsObject()) {
       return false;
     }
-    Local<Object> metadata = Nan::To<Object>(
-        maybe_metadata.ToLocalChecked()).ToLocalChecked();
-    MaybeLocal<Value> maybe_code = Nan::Get(server_status,
-                                            Nan::New("code").ToLocalChecked());
+    Local<Object> metadata =
+        Nan::To<Object>(maybe_metadata.ToLocalChecked()).ToLocalChecked();
+    MaybeLocal<Value> maybe_code =
+        Nan::Get(server_status, Nan::New("code").ToLocalChecked());
     if (maybe_code.IsEmpty()) {
       return false;
     }
@@ -329,16 +309,16 @@ class SendServerStatusOp : public Op {
       return false;
     }
     uint32_t code = Nan::To<uint32_t>(maybe_code.ToLocalChecked()).FromJust();
-    MaybeLocal<Value> maybe_details = Nan::Get(
-        server_status, Nan::New("details").ToLocalChecked());
+    MaybeLocal<Value> maybe_details =
+        Nan::Get(server_status, Nan::New("details").ToLocalChecked());
     if (maybe_details.IsEmpty()) {
       return false;
     }
     if (!maybe_details.ToLocalChecked()->IsString()) {
       return false;
     }
-    Local<String> details = Nan::To<String>(
-        maybe_details.ToLocalChecked()).ToLocalChecked();
+    Local<String> details =
+        Nan::To<String>(maybe_details.ToLocalChecked()).ToLocalChecked();
     if (!CreateMetadataArray(metadata, &status_metadata)) {
       return false;
     }
@@ -352,15 +332,11 @@ class SendServerStatusOp : public Op {
     out->data.send_status_from_server.status_details = &this->details;
     return true;
   }
-  bool IsFinalOp() {
-    return true;
-  }
-  void OnComplete(bool success) {
-  }
+  bool IsFinalOp() { return true; }
+  void OnComplete(bool success) {}
+
  protected:
-  std::string GetTypeString() const {
-    return "send_status";
-  }
+  std::string GetTypeString() const { return "send_status"; }
 
  private:
   grpc_slice details;
@@ -369,13 +345,9 @@ class SendServerStatusOp : public Op {
 
 class GetMetadataOp : public Op {
  public:
-  GetMetadataOp() {
-    grpc_metadata_array_init(&recv_metadata);
-  }
+  GetMetadataOp() { grpc_metadata_array_init(&recv_metadata); }
 
-  ~GetMetadataOp() {
-    grpc_metadata_array_destroy(&recv_metadata);
-  }
+  ~GetMetadataOp() { grpc_metadata_array_destroy(&recv_metadata); }
 
   Local<Value> GetNodeValue() const {
     EscapableHandleScope scope;
@@ -386,16 +358,11 @@ class GetMetadataOp : public Op {
     out->data.recv_initial_metadata.recv_initial_metadata = &recv_metadata;
     return true;
   }
-  bool IsFinalOp() {
-    return false;
-  }
-  void OnComplete(bool success) {
-  }
+  bool IsFinalOp() { return false; }
+  void OnComplete(bool success) {}
 
  protected:
-  std::string GetTypeString() const {
-    return "metadata";
-  }
+  std::string GetTypeString() const { return "metadata"; }
 
  private:
   grpc_metadata_array recv_metadata;
@@ -403,9 +370,7 @@ class GetMetadataOp : public Op {
 
 class ReadMessageOp : public Op {
  public:
-  ReadMessageOp() {
-    recv_message = NULL;
-  }
+  ReadMessageOp() { recv_message = NULL; }
   ~ReadMessageOp() {
     if (recv_message != NULL) {
       grpc_byte_buffer_destroy(recv_message);
@@ -420,16 +385,11 @@ class ReadMessageOp : public Op {
     out->data.recv_message.recv_message = &recv_message;
     return true;
   }
-  bool IsFinalOp() {
-    return false;
-  }
-  void OnComplete(bool success) {
-  }
+  bool IsFinalOp() { return false; }
+  void OnComplete(bool success) {}
 
  protected:
-  std::string GetTypeString() const {
-    return "read";
-  }
+  std::string GetTypeString() const { return "read"; }
 
  private:
   grpc_byte_buffer *recv_message;
@@ -437,13 +397,9 @@ class ReadMessageOp : public Op {
 
 class ClientStatusOp : public Op {
  public:
-  ClientStatusOp() {
-    grpc_metadata_array_init(&metadata_array);
-  }
+  ClientStatusOp() { grpc_metadata_array_init(&metadata_array); }
 
-  ~ClientStatusOp() {
-    grpc_metadata_array_destroy(&metadata_array);
-  }
+  ~ClientStatusOp() { grpc_metadata_array_destroy(&metadata_array); }
 
   bool ParseOp(Local<Value> value, grpc_op *out) {
     out->data.recv_status_on_client.trailing_metadata = &metadata_array;
@@ -456,22 +412,19 @@ class ClientStatusOp : public Op {
     EscapableHandleScope scope;
     Local<Object> status_obj = Nan::New<Object>();
     Nan::Set(status_obj, Nan::New("code").ToLocalChecked(),
-                    Nan::New<Number>(status));
+             Nan::New<Number>(status));
     Nan::Set(status_obj, Nan::New("details").ToLocalChecked(),
-               CopyStringFromSlice(status_details));
+             CopyStringFromSlice(status_details));
     Nan::Set(status_obj, Nan::New("metadata").ToLocalChecked(),
              ParseMetadata(&metadata_array));
     return scope.Escape(status_obj);
   }
-  bool IsFinalOp() {
-    return true;
-  }
-  void OnComplete(bool success) {
-  }
+  bool IsFinalOp() { return true; }
+  void OnComplete(bool success) {}
+
  protected:
-  std::string GetTypeString() const {
-    return "status";
-  }
+  std::string GetTypeString() const { return "status"; }
+
  private:
   grpc_metadata_array metadata_array;
   grpc_status_code status;
@@ -489,23 +442,18 @@ class ServerCloseResponseOp : public Op {
     out->data.recv_close_on_server.cancelled = &cancelled;
     return true;
   }
-  bool IsFinalOp() {
-    return false;
-  }
-  void OnComplete(bool success) {
-  }
+  bool IsFinalOp() { return false; }
+  void OnComplete(bool success) {}
 
  protected:
-  std::string GetTypeString() const {
-    return "cancelled";
-  }
+  std::string GetTypeString() const { return "cancelled"; }
 
  private:
   int cancelled;
 };
 
-tag::tag(Callback *callback, OpVec *ops, Call *call, Local<Value> call_value) :
-    callback(callback), ops(ops), call(call){
+tag::tag(Callback *callback, OpVec *ops, Call *call, Local<Value> call_value)
+    : callback(callback), ops(ops), call(call) {
   HandleScope scope;
   call_persist.Reset(call_value);
 }
@@ -555,19 +503,15 @@ void DestroyTag(void *tag) {
 
 void Call::DestroyCall() {
   if (this->wrapped_call != NULL) {
-    grpc_call_destroy(this->wrapped_call);
+    grpc_call_unref(this->wrapped_call);
     this->wrapped_call = NULL;
   }
 }
 
-Call::Call(grpc_call *call) : wrapped_call(call),
-                              pending_batches(0),
-                              has_final_op_completed(false) {
-}
+Call::Call(grpc_call *call)
+    : wrapped_call(call), pending_batches(0), has_final_op_completed(false) {}
 
-Call::~Call() {
-  DestroyCall();
-}
+Call::~Call() { DestroyCall(); }
 
 void Call::Init(Local<Object> exports) {
   HandleScope scope;
@@ -596,10 +540,10 @@ Local<Value> Call::WrapStruct(grpc_call *call) {
     return scope.Escape(Nan::Null());
   }
   const int argc = 1;
-  Local<Value> argv[argc] = {Nan::New<External>(
-      reinterpret_cast<void *>(call))};
-  MaybeLocal<Object> maybe_instance = Nan::NewInstance(
-      constructor->GetFunction(), argc, argv);
+  Local<Value> argv[argc] = {
+      Nan::New<External>(reinterpret_cast<void *>(call))};
+  MaybeLocal<Object> maybe_instance =
+      Nan::NewInstance(constructor->GetFunction(), argc, argv);
   if (maybe_instance.IsEmpty()) {
     return scope.Escape(Nan::Null());
   } else {
@@ -631,8 +575,7 @@ NAN_METHOD(Call::New) {
     if (info[0]->IsExternal()) {
       Local<External> ext = info[0].As<External>();
       // This option is used for wrapping an existing call
-      grpc_call *call_value =
-          reinterpret_cast<grpc_call *>(ext->Value());
+      grpc_call *call_value = reinterpret_cast<grpc_call *>(ext->Value());
       call = new Call(call_value);
     } else {
       if (!Channel::HasInstance(info[0])) {
@@ -648,8 +591,8 @@ NAN_METHOD(Call::New) {
       // These arguments are at the end because they are optional
       grpc_call *parent_call = NULL;
       if (Call::HasInstance(info[4])) {
-        Call *parent_obj = ObjectWrap::Unwrap<Call>(
-            Nan::To<Object>(info[4]).ToLocalChecked());
+        Call *parent_obj =
+            ObjectWrap::Unwrap<Call>(Nan::To<Object>(info[4]).ToLocalChecked());
         parent_call = parent_obj->wrapped_call;
       } else if (!(info[4]->IsUndefined() || info[4]->IsNull())) {
         return Nan::ThrowTypeError(
@@ -670,22 +613,20 @@ NAN_METHOD(Call::New) {
       double deadline = Nan::To<double>(info[2]).FromJust();
       grpc_channel *wrapped_channel = channel->GetWrappedChannel();
       grpc_call *wrapped_call;
-      grpc_slice method = CreateSliceFromString(
-          Nan::To<String>(info[1]).ToLocalChecked());
+      grpc_slice method =
+          CreateSliceFromString(Nan::To<String>(info[1]).ToLocalChecked());
       if (info[3]->IsString()) {
         grpc_slice *host = new grpc_slice;
-        *host = CreateSliceFromString(
-            Nan::To<String>(info[3]).ToLocalChecked());
+        *host =
+            CreateSliceFromString(Nan::To<String>(info[3]).ToLocalChecked());
         wrapped_call = grpc_channel_create_call(
-            wrapped_channel, parent_call, propagate_flags,
-            GetCompletionQueue(), method,
-            host, MillisecondsToTimespec(deadline), NULL);
+            wrapped_channel, parent_call, propagate_flags, GetCompletionQueue(),
+            method, host, MillisecondsToTimespec(deadline), NULL);
         delete host;
       } else if (info[3]->IsUndefined() || info[3]->IsNull()) {
         wrapped_call = grpc_channel_create_call(
-            wrapped_channel, parent_call, propagate_flags,
-            GetCompletionQueue(), method,
-            NULL, MillisecondsToTimespec(deadline), NULL);
+            wrapped_channel, parent_call, propagate_flags, GetCompletionQueue(),
+            method, NULL, MillisecondsToTimespec(deadline), NULL);
       } else {
         return Nan::ThrowTypeError("Call's fourth argument must be a string");
       }
@@ -699,8 +640,8 @@ NAN_METHOD(Call::New) {
   } else {
     const int argc = 4;
     Local<Value> argv[argc] = {info[0], info[1], info[2], info[3]};
-    MaybeLocal<Object> maybe_instance = Nan::NewInstance(
-        constructor->GetFunction(), argc, argv);
+    MaybeLocal<Object> maybe_instance =
+        Nan::NewInstance(constructor->GetFunction(), argc, argv);
     if (maybe_instance.IsEmpty()) {
       // There's probably a pending exception
       return;
@@ -773,8 +714,8 @@ NAN_METHOD(Call::StartBatch) {
   }
   Callback *callback = new Callback(callback_func);
   grpc_call_error error = grpc_call_start_batch(
-      call->wrapped_call, &ops[0], nops, new struct tag(
-          callback, op_vector.release(), call, info.This()), NULL);
+      call->wrapped_call, &ops[0], nops,
+      new struct tag(callback, op_vector.release(), call, info.This()), NULL);
   if (error != GRPC_CALL_OK) {
     return Nan::ThrowError(nanErrorWithCode("startBatch failed", error));
   }
@@ -807,8 +748,8 @@ NAN_METHOD(Call::CancelWithStatus) {
         "cancelWithStatus's second argument must be a string");
   }
   Call *call = ObjectWrap::Unwrap<Call>(info.This());
-  grpc_status_code code = static_cast<grpc_status_code>(
-      Nan::To<uint32_t>(info[0]).FromJust());
+  grpc_status_code code =
+      static_cast<grpc_status_code>(Nan::To<uint32_t>(info[0]).FromJust());
   if (code == GRPC_STATUS_OK) {
     return Nan::ThrowRangeError(
         "cancelWithStatus cannot be called with OK status");
diff --git a/src/node/ext/call.h b/src/node/ext/call.h
index 340e32682b9f031b4fcc658e6015a85492332959..0bd24f56a9ac6f5b9a82e0c2937872c29bb5a338 100644
--- a/src/node/ext/call.h
+++ b/src/node/ext/call.h
@@ -37,14 +37,13 @@
 #include <memory>
 #include <vector>
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include "grpc/grpc.h"
 #include "grpc/support/log.h"
 
 #include "channel.h"
 
-
 namespace grpc {
 namespace node {
 
diff --git a/src/node/ext/call_credentials.cc b/src/node/ext/call_credentials.cc
index 5bd4bdcd5ab1c096a7a4c9d4873fd29d1bf122b8..f88eb8293344b51f013d55a8e692a39fa61cd5f1 100644
--- a/src/node/ext/call_credentials.cc
+++ b/src/node/ext/call_credentials.cc
@@ -31,17 +31,17 @@
  *
  */
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include <uv.h>
 
 #include <queue>
 
+#include "call.h"
+#include "call_credentials.h"
 #include "grpc/grpc.h"
 #include "grpc/grpc_security.h"
 #include "grpc/support/log.h"
-#include "call_credentials.h"
-#include "call.h"
 
 namespace grpc {
 namespace node {
@@ -86,15 +86,15 @@ void CallCredentials::Init(Local<Object> exports) {
   fun_tpl.Reset(tpl);
   Local<Function> ctr = Nan::GetFunction(tpl).ToLocalChecked();
   Nan::Set(ctr, Nan::New("createFromPlugin").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(CreateFromPlugin)).ToLocalChecked());
+           Nan::GetFunction(Nan::New<FunctionTemplate>(CreateFromPlugin))
+               .ToLocalChecked());
   Nan::Set(exports, Nan::New("CallCredentials").ToLocalChecked(), ctr);
   constructor = new Nan::Callback(ctr);
 
   Local<FunctionTemplate> callback_tpl =
       Nan::New<FunctionTemplate>(PluginCallback);
-  plugin_callback = new Callback(
-      Nan::GetFunction(callback_tpl).ToLocalChecked());
+  plugin_callback =
+      new Callback(Nan::GetFunction(callback_tpl).ToLocalChecked());
 }
 
 bool CallCredentials::HasInstance(Local<Value> val) {
@@ -109,9 +109,9 @@ Local<Value> CallCredentials::WrapStruct(grpc_call_credentials *credentials) {
     return scope.Escape(Nan::Null());
   }
   Local<Value> argv[argc] = {
-    Nan::New<External>(reinterpret_cast<void *>(credentials))};
-  MaybeLocal<Object> maybe_instance = Nan::NewInstance(
-      constructor->GetFunction(), argc, argv);
+      Nan::New<External>(reinterpret_cast<void *>(credentials))};
+  MaybeLocal<Object> maybe_instance =
+      Nan::NewInstance(constructor->GetFunction(), argc, argv);
   if (maybe_instance.IsEmpty()) {
     return scope.Escape(Nan::Null());
   } else {
@@ -160,8 +160,6 @@ NAN_METHOD(CallCredentials::Compose) {
   info.GetReturnValue().Set(WrapStruct(creds));
 }
 
-
-
 NAN_METHOD(CallCredentials::CreateFromPlugin) {
   if (!info[0]->IsFunction()) {
     return Nan::ThrowTypeError(
@@ -170,21 +168,19 @@ NAN_METHOD(CallCredentials::CreateFromPlugin) {
   grpc_metadata_credentials_plugin plugin;
   plugin_state *state = new plugin_state;
   state->callback = new Nan::Callback(info[0].As<Function>());
-  state->pending_callbacks = new std::queue<plugin_callback_data*>();
+  state->pending_callbacks = new std::queue<plugin_callback_data *>();
   uv_mutex_init(&state->plugin_mutex);
-  uv_async_init(uv_default_loop(),
-                &state->plugin_async,
-                SendPluginCallback);
-  uv_unref((uv_handle_t*)&state->plugin_async);
+  uv_async_init(uv_default_loop(), &state->plugin_async, SendPluginCallback);
+  uv_unref((uv_handle_t *)&state->plugin_async);
 
   state->plugin_async.data = state;
 
   plugin.get_metadata = plugin_get_metadata;
   plugin.destroy = plugin_destroy_state;
-  plugin.state = reinterpret_cast<void*>(state);
+  plugin.state = reinterpret_cast<void *>(state);
   plugin.type = "";
-  grpc_call_credentials *creds = grpc_metadata_credentials_create_from_plugin(
-      plugin, NULL);
+  grpc_call_credentials *creds =
+      grpc_metadata_credentials_create_from_plugin(plugin, NULL);
   info.GetReturnValue().Set(WrapStruct(creds));
 }
 
@@ -206,34 +202,35 @@ NAN_METHOD(PluginCallback) {
     return Nan::ThrowTypeError(
         "The callback's fourth argument must be an object");
   }
-  grpc_status_code code = static_cast<grpc_status_code>(
-      Nan::To<uint32_t>(info[0]).FromJust());
+  grpc_status_code code =
+      static_cast<grpc_status_code>(Nan::To<uint32_t>(info[0]).FromJust());
   Utf8String details_utf8_str(info[1]);
   char *details = *details_utf8_str;
   grpc_metadata_array array;
   grpc_metadata_array_init(&array);
   Local<Object> callback_data = Nan::To<Object>(info[3]).ToLocalChecked();
-  if (!CreateMetadataArray(Nan::To<Object>(info[2]).ToLocalChecked(),
-                           &array)){
+  if (!CreateMetadataArray(Nan::To<Object>(info[2]).ToLocalChecked(), &array)) {
     return Nan::ThrowError("Failed to parse metadata");
   }
   grpc_credentials_plugin_metadata_cb cb =
       reinterpret_cast<grpc_credentials_plugin_metadata_cb>(
-          Nan::Get(callback_data,
-                   Nan::New("cb").ToLocalChecked()
-                   ).ToLocalChecked().As<External>()->Value());
+          Nan::Get(callback_data, Nan::New("cb").ToLocalChecked())
+              .ToLocalChecked()
+              .As<External>()
+              ->Value());
   void *user_data =
-      Nan::Get(callback_data,
-               Nan::New("user_data").ToLocalChecked()
-               ).ToLocalChecked().As<External>()->Value();
+      Nan::Get(callback_data, Nan::New("user_data").ToLocalChecked())
+          .ToLocalChecked()
+          .As<External>()
+          ->Value();
   cb(user_data, array.metadata, array.count, code, details);
   DestroyMetadataArray(&array);
 }
 
 NAUV_WORK_CB(SendPluginCallback) {
   Nan::HandleScope scope;
-  plugin_state *state = reinterpret_cast<plugin_state*>(async->data);
-  std::queue<plugin_callback_data*> callbacks;
+  plugin_state *state = reinterpret_cast<plugin_state *>(async->data);
+  std::queue<plugin_callback_data *> callbacks;
   uv_mutex_lock(&state->plugin_mutex);
   state->pending_callbacks->swap(callbacks);
   uv_mutex_unlock(&state->plugin_mutex);
@@ -242,16 +239,14 @@ NAUV_WORK_CB(SendPluginCallback) {
     callbacks.pop();
     Local<Object> callback_data = Nan::New<Object>();
     Nan::Set(callback_data, Nan::New("cb").ToLocalChecked(),
-             Nan::New<v8::External>(reinterpret_cast<void*>(data->cb)));
+             Nan::New<v8::External>(reinterpret_cast<void *>(data->cb)));
     Nan::Set(callback_data, Nan::New("user_data").ToLocalChecked(),
              Nan::New<v8::External>(data->user_data));
     const int argc = 3;
     v8::Local<v8::Value> argv[argc] = {
-      Nan::New(data->service_url).ToLocalChecked(),
-      callback_data,
-      // Get Local<Function> from Nan::Callback*
-      **plugin_callback
-    };
+        Nan::New(data->service_url).ToLocalChecked(), callback_data,
+        // Get Local<Function> from Nan::Callback*
+        **plugin_callback};
     Nan::Callback *callback = state->callback;
     callback->Call(argc, argv);
     delete data;
@@ -261,7 +256,7 @@ NAUV_WORK_CB(SendPluginCallback) {
 void plugin_get_metadata(void *state, grpc_auth_metadata_context context,
                          grpc_credentials_plugin_metadata_cb cb,
                          void *user_data) {
-  plugin_state *p_state = reinterpret_cast<plugin_state*>(state);
+  plugin_state *p_state = reinterpret_cast<plugin_state *>(state);
   plugin_callback_data *data = new plugin_callback_data;
   data->service_url = context.service_url;
   data->cb = cb;
@@ -275,7 +270,7 @@ void plugin_get_metadata(void *state, grpc_auth_metadata_context context,
 }
 
 void plugin_uv_close_cb(uv_handle_t *handle) {
-  uv_async_t *async = reinterpret_cast<uv_async_t*>(handle);
+  uv_async_t *async = reinterpret_cast<uv_async_t *>(handle);
   plugin_state *state = reinterpret_cast<plugin_state *>(async->data);
   uv_mutex_destroy(&state->plugin_mutex);
   delete state->pending_callbacks;
@@ -285,7 +280,7 @@ void plugin_uv_close_cb(uv_handle_t *handle) {
 
 void plugin_destroy_state(void *ptr) {
   plugin_state *state = reinterpret_cast<plugin_state *>(ptr);
-  uv_close((uv_handle_t*)&state->plugin_async, plugin_uv_close_cb);
+  uv_close((uv_handle_t *)&state->plugin_async, plugin_uv_close_cb);
 }
 
 }  // namespace node
diff --git a/src/node/ext/call_credentials.h b/src/node/ext/call_credentials.h
index 21a4b8923e2223dbc76fbe3b192d9dcb2ab10b81..5a1741c606ff836679243a836e34ccf7e0052454 100644
--- a/src/node/ext/call_credentials.h
+++ b/src/node/ext/call_credentials.h
@@ -36,8 +36,8 @@
 
 #include <queue>
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include <uv.h>
 #include "grpc/grpc_security.h"
 
@@ -84,7 +84,7 @@ typedef struct plugin_callback_data {
 
 typedef struct plugin_state {
   Nan::Callback *callback;
-  std::queue<plugin_callback_data*> *pending_callbacks;
+  std::queue<plugin_callback_data *> *pending_callbacks;
   uv_mutex_t plugin_mutex;
   // async.data == this
   uv_async_t plugin_async;
diff --git a/src/node/ext/channel.cc b/src/node/ext/channel.cc
index 1263cc0d286c465f14b9041088c8e7b25f0717dd..be04cf421d6f89d5b521878a51a4c309c3b0584c 100644
--- a/src/node/ext/channel.cc
+++ b/src/node/ext/channel.cc
@@ -35,15 +35,15 @@
 
 #include "grpc/support/log.h"
 
-#include <node.h>
 #include <nan.h>
-#include "grpc/grpc.h"
-#include "grpc/grpc_security.h"
+#include <node.h>
 #include "call.h"
 #include "channel.h"
+#include "channel_credentials.h"
 #include "completion_queue.h"
 #include "completion_queue_async_worker.h"
-#include "channel_credentials.h"
+#include "grpc/grpc.h"
+#include "grpc/grpc_security.h"
 #include "timeval.h"
 
 namespace grpc {
@@ -82,8 +82,8 @@ bool ParseChannelArgs(Local<Value> args_val,
     *channel_args_ptr = NULL;
     return false;
   }
-  grpc_channel_args *channel_args = reinterpret_cast<grpc_channel_args*>(
-      malloc(sizeof(grpc_channel_args)));
+  grpc_channel_args *channel_args =
+      reinterpret_cast<grpc_channel_args *>(malloc(sizeof(grpc_channel_args)));
   *channel_args_ptr = channel_args;
   Local<Object> args_hash = Nan::To<Object>(args_val).ToLocalChecked();
   Local<Array> keys = Nan::GetOwnPropertyNames(args_hash).ToLocalChecked();
@@ -104,16 +104,16 @@ bool ParseChannelArgs(Local<Value> args_val,
     } else if (value->IsString()) {
       Utf8String val_str(value);
       channel_args->args[i].type = GRPC_ARG_STRING;
-      channel_args->args[i].value.string = reinterpret_cast<char*>(
-          calloc(val_str.length() + 1,sizeof(char)));
-      memcpy(channel_args->args[i].value.string,
-             *val_str, val_str.length() + 1);
+      channel_args->args[i].value.string =
+          reinterpret_cast<char *>(calloc(val_str.length() + 1, sizeof(char)));
+      memcpy(channel_args->args[i].value.string, *val_str,
+             val_str.length() + 1);
     } else {
       // The value does not match either of the accepted types
       return false;
     }
-    channel_args->args[i].key = reinterpret_cast<char*>(
-        calloc(key_str.length() + 1, sizeof(char)));
+    channel_args->args[i].key =
+        reinterpret_cast<char *>(calloc(key_str.length() + 1, sizeof(char)));
     memcpy(channel_args->args[i].key, *key_str, key_str.length() + 1);
   }
   return true;
@@ -190,12 +190,13 @@ NAN_METHOD(Channel::New) {
     grpc_channel_args *channel_args_ptr = NULL;
     if (!ParseChannelArgs(info[2], &channel_args_ptr)) {
       DeallocateChannelArgs(channel_args_ptr);
-      return Nan::ThrowTypeError("Channel options must be an object with "
-                                 "string keys and integer or string values");
+      return Nan::ThrowTypeError(
+          "Channel options must be an object with "
+          "string keys and integer or string values");
     }
     if (creds == NULL) {
-      wrapped_channel = grpc_insecure_channel_create(*host, channel_args_ptr,
-                                                     NULL);
+      wrapped_channel =
+          grpc_insecure_channel_create(*host, channel_args_ptr, NULL);
     } else {
       wrapped_channel =
           grpc_secure_channel_create(creds, *host, channel_args_ptr, NULL);
@@ -208,8 +209,8 @@ NAN_METHOD(Channel::New) {
   } else {
     const int argc = 3;
     Local<Value> argv[argc] = {info[0], info[1], info[2]};
-    MaybeLocal<Object> maybe_instance = Nan::NewInstance(
-        constructor->GetFunction(), argc, argv);
+    MaybeLocal<Object> maybe_instance =
+        Nan::NewInstance(constructor->GetFunction(), argc, argv);
     if (maybe_instance.IsEmpty()) {
       // There's probably a pending exception
       return;
@@ -232,11 +233,13 @@ NAN_METHOD(Channel::Close) {
 
 NAN_METHOD(Channel::GetTarget) {
   if (!HasInstance(info.This())) {
-    return Nan::ThrowTypeError("getTarget can only be called on Channel objects");
+    return Nan::ThrowTypeError(
+        "getTarget can only be called on Channel objects");
   }
   Channel *channel = ObjectWrap::Unwrap<Channel>(info.This());
-  info.GetReturnValue().Set(Nan::New(
-      grpc_channel_get_target(channel->wrapped_channel)).ToLocalChecked());
+  info.GetReturnValue().Set(
+      Nan::New(grpc_channel_get_target(channel->wrapped_channel))
+          .ToLocalChecked());
 }
 
 NAN_METHOD(Channel::GetConnectivityState) {
@@ -246,9 +249,8 @@ NAN_METHOD(Channel::GetConnectivityState) {
   }
   Channel *channel = ObjectWrap::Unwrap<Channel>(info.This());
   int try_to_connect = (int)info[0]->Equals(Nan::True());
-  info.GetReturnValue().Set(
-      grpc_channel_check_connectivity_state(channel->wrapped_channel,
-                                            try_to_connect));
+  info.GetReturnValue().Set(grpc_channel_check_connectivity_state(
+      channel->wrapped_channel, try_to_connect));
 }
 
 NAN_METHOD(Channel::WatchConnectivityState) {
@@ -268,9 +270,8 @@ NAN_METHOD(Channel::WatchConnectivityState) {
     return Nan::ThrowTypeError(
         "watchConnectivityState's third argument must be a callback");
   }
-  grpc_connectivity_state last_state =
-      static_cast<grpc_connectivity_state>(
-          Nan::To<uint32_t>(info[0]).FromJust());
+  grpc_connectivity_state last_state = static_cast<grpc_connectivity_state>(
+      Nan::To<uint32_t>(info[0]).FromJust());
   double deadline = Nan::To<double>(info[1]).FromJust();
   Local<Function> callback_func = info[2].As<Function>();
   Nan::Callback *callback = new Callback(callback_func);
@@ -279,8 +280,7 @@ NAN_METHOD(Channel::WatchConnectivityState) {
   grpc_channel_watch_connectivity_state(
       channel->wrapped_channel, last_state, MillisecondsToTimespec(deadline),
       GetCompletionQueue(),
-      new struct tag(callback,
-                     ops.release(), NULL, Nan::Null()));
+      new struct tag(callback, ops.release(), NULL, Nan::Null()));
   CompletionQueueNext();
 }
 
diff --git a/src/node/ext/channel.h b/src/node/ext/channel.h
index 9ec28e15af04accf6499c800abd56947a417b513..6d42a5e04060da8bcdf5060fb1b6f15a3fa1a143 100644
--- a/src/node/ext/channel.h
+++ b/src/node/ext/channel.h
@@ -34,8 +34,8 @@
 #ifndef NET_GRPC_NODE_CHANNEL_H_
 #define NET_GRPC_NODE_CHANNEL_H_
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include "grpc/grpc.h"
 
 namespace grpc {
diff --git a/src/node/ext/channel_credentials.cc b/src/node/ext/channel_credentials.cc
index 059bc8a890262d20e2042f4577fa8648120e569d..cf1dc318a8f6a76d0c96fa0a7ec2c29f78c22d94 100644
--- a/src/node/ext/channel_credentials.cc
+++ b/src/node/ext/channel_credentials.cc
@@ -33,12 +33,12 @@
 
 #include <node.h>
 
+#include "call.h"
+#include "call_credentials.h"
+#include "channel_credentials.h"
 #include "grpc/grpc.h"
 #include "grpc/grpc_security.h"
 #include "grpc/support/log.h"
-#include "channel_credentials.h"
-#include "call_credentials.h"
-#include "call.h"
 
 namespace grpc {
 namespace node {
@@ -80,12 +80,12 @@ void ChannelCredentials::Init(Local<Object> exports) {
   Nan::SetPrototypeMethod(tpl, "compose", Compose);
   fun_tpl.Reset(tpl);
   Local<Function> ctr = Nan::GetFunction(tpl).ToLocalChecked();
-  Nan::Set(ctr, Nan::New("createSsl").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(CreateSsl)).ToLocalChecked());
+  Nan::Set(
+      ctr, Nan::New("createSsl").ToLocalChecked(),
+      Nan::GetFunction(Nan::New<FunctionTemplate>(CreateSsl)).ToLocalChecked());
   Nan::Set(ctr, Nan::New("createInsecure").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(CreateInsecure)).ToLocalChecked());
+           Nan::GetFunction(Nan::New<FunctionTemplate>(CreateInsecure))
+               .ToLocalChecked());
   Nan::Set(exports, Nan::New("ChannelCredentials").ToLocalChecked(), ctr);
   constructor = new Nan::Callback(ctr);
 }
@@ -100,9 +100,9 @@ Local<Value> ChannelCredentials::WrapStruct(
   EscapableHandleScope scope;
   const int argc = 1;
   Local<Value> argv[argc] = {
-    Nan::New<External>(reinterpret_cast<void *>(credentials))};
-  MaybeLocal<Object> maybe_instance = Nan::NewInstance(
-      constructor->GetFunction(), argc, argv);
+      Nan::New<External>(reinterpret_cast<void *>(credentials))};
+  MaybeLocal<Object> maybe_instance =
+      Nan::NewInstance(constructor->GetFunction(), argc, argv);
   if (maybe_instance.IsEmpty()) {
     return scope.Escape(Nan::Null());
   } else {
@@ -179,11 +179,10 @@ NAN_METHOD(ChannelCredentials::Compose) {
     return Nan::ThrowTypeError(
         "compose's first argument must be a CallCredentials object");
   }
-  ChannelCredentials *self = ObjectWrap::Unwrap<ChannelCredentials>(
-      info.This());
+  ChannelCredentials *self =
+      ObjectWrap::Unwrap<ChannelCredentials>(info.This());
   if (self->wrapped_credentials == NULL) {
-    return Nan::ThrowTypeError(
-        "Cannot compose insecure credential");
+    return Nan::ThrowTypeError("Cannot compose insecure credential");
   }
   CallCredentials *other = ObjectWrap::Unwrap<CallCredentials>(
       Nan::To<Object>(info[0]).ToLocalChecked());
diff --git a/src/node/ext/channel_credentials.h b/src/node/ext/channel_credentials.h
index 89b115267f33e806ff8bb0d7154f152ba62773ad..e5c7439de27bff3dc55df2b7dfeeda6c6e64a25c 100644
--- a/src/node/ext/channel_credentials.h
+++ b/src/node/ext/channel_credentials.h
@@ -34,8 +34,8 @@
 #ifndef NET_GRPC_NODE_CHANNEL_CREDENTIALS_H_
 #define NET_GRPC_NODE_CHANNEL_CREDENTIALS_H_
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include "grpc/grpc.h"
 #include "grpc/grpc_security.h"
 
diff --git a/src/node/ext/completion_queue.h b/src/node/ext/completion_queue.h
index 9b01028ef173a42c9c0e2eaef9352702c787647f..a3a055c385a3c0c2c8a20a33528296a46f9836ea 100644
--- a/src/node/ext/completion_queue.h
+++ b/src/node/ext/completion_queue.h
@@ -31,8 +31,8 @@
  *
  */
 
-#include <v8.h>
 #include <grpc/grpc.h>
+#include <v8.h>
 
 namespace grpc {
 namespace node {
diff --git a/src/node/ext/node_grpc.cc b/src/node/ext/node_grpc.cc
index 122e5e63ee9d16c0eb9f0418e57761fdd29e5586..076f1ed4242f6fdebe2b1536e345a6e68f922580 100644
--- a/src/node/ext/node_grpc.cc
+++ b/src/node/ext/node_grpc.cc
@@ -33,8 +33,8 @@
 
 #include <queue>
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include <v8.h>
 #include "grpc/grpc.h"
 #include "grpc/grpc_security.h"
@@ -53,12 +53,12 @@ extern "C" {
 #include "call_credentials.h"
 #include "channel.h"
 #include "channel_credentials.h"
-#include "server.h"
+#include "completion_queue.h"
 #include "completion_queue_async_worker.h"
+#include "server.h"
 #include "server_credentials.h"
 #include "slice.h"
 #include "timeval.h"
-#include "completion_queue.h"
 
 using grpc::node::CreateSliceFromString;
 
@@ -188,8 +188,7 @@ void InitOpTypeConstants(Local<Object> exports) {
       Nan::New<Uint32, uint32_t>(GRPC_OP_SEND_INITIAL_METADATA));
   Nan::Set(op_type, Nan::New("SEND_INITIAL_METADATA").ToLocalChecked(),
            SEND_INITIAL_METADATA);
-  Local<Value> SEND_MESSAGE(
-      Nan::New<Uint32, uint32_t>(GRPC_OP_SEND_MESSAGE));
+  Local<Value> SEND_MESSAGE(Nan::New<Uint32, uint32_t>(GRPC_OP_SEND_MESSAGE));
   Nan::Set(op_type, Nan::New("SEND_MESSAGE").ToLocalChecked(), SEND_MESSAGE);
   Local<Value> SEND_CLOSE_FROM_CLIENT(
       Nan::New<Uint32, uint32_t>(GRPC_OP_SEND_CLOSE_FROM_CLIENT));
@@ -203,8 +202,7 @@ void InitOpTypeConstants(Local<Object> exports) {
       Nan::New<Uint32, uint32_t>(GRPC_OP_RECV_INITIAL_METADATA));
   Nan::Set(op_type, Nan::New("RECV_INITIAL_METADATA").ToLocalChecked(),
            RECV_INITIAL_METADATA);
-  Local<Value> RECV_MESSAGE(
-      Nan::New<Uint32, uint32_t>(GRPC_OP_RECV_MESSAGE));
+  Local<Value> RECV_MESSAGE(Nan::New<Uint32, uint32_t>(GRPC_OP_RECV_MESSAGE));
   Nan::Set(op_type, Nan::New("RECV_MESSAGE").ToLocalChecked(), RECV_MESSAGE);
   Local<Value> RECV_STATUS_ON_CLIENT(
       Nan::New<Uint32, uint32_t>(GRPC_OP_RECV_STATUS_ON_CLIENT));
@@ -252,8 +250,7 @@ void InitConnectivityStateConstants(Local<Object> exports) {
       Nan::New<Uint32, uint32_t>(GRPC_CHANNEL_TRANSIENT_FAILURE));
   Nan::Set(channel_state, Nan::New("TRANSIENT_FAILURE").ToLocalChecked(),
            TRANSIENT_FAILURE);
-  Local<Value> FATAL_FAILURE(
-      Nan::New<Uint32, uint32_t>(GRPC_CHANNEL_SHUTDOWN));
+  Local<Value> FATAL_FAILURE(Nan::New<Uint32, uint32_t>(GRPC_CHANNEL_SHUTDOWN));
   Nan::Set(channel_state, Nan::New("FATAL_FAILURE").ToLocalChecked(),
            FATAL_FAILURE);
 }
@@ -282,13 +279,11 @@ void InitLogConstants(Local<Object> exports) {
 
 NAN_METHOD(MetadataKeyIsLegal) {
   if (!info[0]->IsString()) {
-    return Nan::ThrowTypeError(
-        "headerKeyIsLegal's argument must be a string");
+    return Nan::ThrowTypeError("headerKeyIsLegal's argument must be a string");
   }
   Local<String> key = Nan::To<String>(info[0]).ToLocalChecked();
   grpc_slice slice = CreateSliceFromString(key);
-  info.GetReturnValue().Set(static_cast<bool>(
-      grpc_header_key_is_legal(slice)));
+  info.GetReturnValue().Set(static_cast<bool>(grpc_header_key_is_legal(slice)));
   grpc_slice_unref(slice);
 }
 
@@ -299,8 +294,8 @@ NAN_METHOD(MetadataNonbinValueIsLegal) {
   }
   Local<String> value = Nan::To<String>(info[0]).ToLocalChecked();
   grpc_slice slice = CreateSliceFromString(value);
-  info.GetReturnValue().Set(static_cast<bool>(
-      grpc_header_nonbin_value_is_legal(slice)));
+  info.GetReturnValue().Set(
+      static_cast<bool>(grpc_header_nonbin_value_is_legal(slice)));
   grpc_slice_unref(slice);
 }
 
@@ -311,8 +306,7 @@ NAN_METHOD(MetadataKeyIsBinary) {
   }
   Local<String> key = Nan::To<String>(info[0]).ToLocalChecked();
   grpc_slice slice = CreateSliceFromString(key);
-  info.GetReturnValue().Set(static_cast<bool>(
-      grpc_is_binary_header(slice)));
+  info.GetReturnValue().Set(static_cast<bool>(grpc_is_binary_header(slice)));
   grpc_slice_unref(slice);
 }
 
@@ -354,11 +348,13 @@ NAUV_WORK_CB(LogMessagesCallback) {
     args.pop();
     Local<Value> file = Nan::New(arg->core_args.file).ToLocalChecked();
     Local<Value> line = Nan::New<Uint32, uint32_t>(arg->core_args.line);
-    Local<Value> severity = Nan::New(
-        gpr_log_severity_string(arg->core_args.severity)).ToLocalChecked();
+    Local<Value> severity =
+        Nan::New(gpr_log_severity_string(arg->core_args.severity))
+            .ToLocalChecked();
     Local<Value> message = Nan::New(arg->core_args.message).ToLocalChecked();
-    Local<Value> timestamp = Nan::New<v8::Date>(
-        grpc::node::TimespecToMilliseconds(arg->timestamp)).ToLocalChecked();
+    Local<Value> timestamp =
+        Nan::New<v8::Date>(grpc::node::TimespecToMilliseconds(arg->timestamp))
+            .ToLocalChecked();
     const int argc = 5;
     Local<Value> argv[argc] = {file, line, severity, message, timestamp};
     grpc_logger_state.callback->Call(argc, argv);
@@ -388,10 +384,9 @@ void init_logger() {
   memset(&grpc_logger_state, 0, sizeof(logger_state));
   grpc_logger_state.pending_args = new std::queue<log_args *>();
   uv_mutex_init(&grpc_logger_state.mutex);
-  uv_async_init(uv_default_loop(),
-                &grpc_logger_state.async,
+  uv_async_init(uv_default_loop(), &grpc_logger_state.async,
                 LogMessagesCallback);
-  uv_unref((uv_handle_t*)&grpc_logger_state.async);
+  uv_unref((uv_handle_t *)&grpc_logger_state.async);
   grpc_logger_state.logger_set = false;
 
   gpr_log_verbosity_init();
@@ -416,11 +411,10 @@ NAN_METHOD(SetDefaultLoggerCallback) {
 
 NAN_METHOD(SetLogVerbosity) {
   if (!info[0]->IsUint32()) {
-    return Nan::ThrowTypeError(
-        "setLogVerbosity's argument must be a number");
+    return Nan::ThrowTypeError("setLogVerbosity's argument must be a number");
   }
-  gpr_log_severity severity = static_cast<gpr_log_severity>(
-      Nan::To<uint32_t>(info[0]).FromJust());
+  gpr_log_severity severity =
+      static_cast<gpr_log_severity>(Nan::To<uint32_t>(info[0]).FromJust());
   gpr_set_log_verbosity(severity);
 }
 
@@ -453,28 +447,25 @@ void init(Local<Object> exports) {
 
   // Attach a few utility functions directly to the module
   Nan::Set(exports, Nan::New("metadataKeyIsLegal").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(MetadataKeyIsLegal)).ToLocalChecked());
-  Nan::Set(exports, Nan::New("metadataNonbinValueIsLegal").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(MetadataNonbinValueIsLegal)
-                            ).ToLocalChecked());
+           Nan::GetFunction(Nan::New<FunctionTemplate>(MetadataKeyIsLegal))
+               .ToLocalChecked());
+  Nan::Set(
+      exports, Nan::New("metadataNonbinValueIsLegal").ToLocalChecked(),
+      Nan::GetFunction(Nan::New<FunctionTemplate>(MetadataNonbinValueIsLegal))
+          .ToLocalChecked());
   Nan::Set(exports, Nan::New("metadataKeyIsBinary").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(MetadataKeyIsBinary)
-                            ).ToLocalChecked());
+           Nan::GetFunction(Nan::New<FunctionTemplate>(MetadataKeyIsBinary))
+               .ToLocalChecked());
   Nan::Set(exports, Nan::New("setDefaultRootsPem").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(SetDefaultRootsPem)
-                            ).ToLocalChecked());
-  Nan::Set(exports, Nan::New("setDefaultLoggerCallback").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(SetDefaultLoggerCallback)
-                            ).ToLocalChecked());
+           Nan::GetFunction(Nan::New<FunctionTemplate>(SetDefaultRootsPem))
+               .ToLocalChecked());
+  Nan::Set(
+      exports, Nan::New("setDefaultLoggerCallback").ToLocalChecked(),
+      Nan::GetFunction(Nan::New<FunctionTemplate>(SetDefaultLoggerCallback))
+          .ToLocalChecked());
   Nan::Set(exports, Nan::New("setLogVerbosity").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(SetLogVerbosity)
-                            ).ToLocalChecked());
+           Nan::GetFunction(Nan::New<FunctionTemplate>(SetLogVerbosity))
+               .ToLocalChecked());
 }
 
 NODE_MODULE(grpc_node, init)
diff --git a/src/node/ext/server.cc b/src/node/ext/server.cc
index 5384305631db0e0009c0e7c177a765682ba794fd..1871a3245287bf277d1ac625e1827d8f1375c294 100644
--- a/src/node/ext/server.cc
+++ b/src/node/ext/server.cc
@@ -111,14 +111,9 @@ class NewCallOp : public Op {
     return scope.Escape(obj);
   }
 
-  bool ParseOp(Local<Value> value, grpc_op *out) {
-    return true;
-  }
-  bool IsFinalOp() {
-    return false;
-  }
-  void OnComplete(bool success) {
-  }
+  bool ParseOp(Local<Value> value, grpc_op *out) { return true; }
+  bool IsFinalOp() { return false; }
+  void OnComplete(bool success) {}
 
   grpc_call *call;
   grpc_call_details details;
@@ -128,7 +123,7 @@ class NewCallOp : public Op {
   std::string GetTypeString() const { return "new_call"; }
 };
 
-class TryShutdownOp: public Op {
+class TryShutdownOp : public Op {
  public:
   TryShutdownOp(Server *server, Local<Value> server_value) : server(server) {
     server_persist.Reset(server_value);
@@ -137,19 +132,17 @@ class TryShutdownOp: public Op {
     EscapableHandleScope scope;
     return scope.Escape(Nan::New(server_persist));
   }
-  bool ParseOp(Local<Value> value, grpc_op *out) {
-    return true;
-  }
-  bool IsFinalOp() {
-    return false;
-  }
+  bool ParseOp(Local<Value> value, grpc_op *out) { return true; }
+  bool IsFinalOp() { return false; }
   void OnComplete(bool success) {
     if (success) {
       server->DestroyWrappedServer();
     }
   }
+
  protected:
   std::string GetTypeString() const { return "try_shutdown"; }
+
  private:
   Server *server;
   Nan::Persistent<v8::Value, Nan::CopyablePersistentTraits<v8::Value>>
@@ -227,10 +220,9 @@ NAN_METHOD(Server::RequestCall) {
   ops->push_back(unique_ptr<Op>(op));
   grpc_call_error error = grpc_server_request_call(
       server->wrapped_server, &op->call, &op->details, &op->request_metadata,
-      GetCompletionQueue(),
-      GetCompletionQueue(),
-      new struct tag(new Callback(info[0].As<Function>()), ops.release(),
-                     NULL, Nan::Null()));
+      GetCompletionQueue(), GetCompletionQueue(),
+      new struct tag(new Callback(info[0].As<Function>()), ops.release(), NULL,
+                     Nan::Null()));
   if (error != GRPC_CALL_OK) {
     return Nan::ThrowError(nanErrorWithCode("requestCall failed", error));
   }
diff --git a/src/node/ext/server.h b/src/node/ext/server.h
index c0f2e86554b534ea03b34404b3d3892415bbe991..2d8cb4c44410b495bb7ce61d1b9db0f53393e3f0 100644
--- a/src/node/ext/server.h
+++ b/src/node/ext/server.h
@@ -34,8 +34,8 @@
 #ifndef NET_GRPC_NODE_SERVER_H_
 #define NET_GRPC_NODE_SERVER_H_
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include "grpc/grpc.h"
 
 namespace grpc {
diff --git a/src/node/ext/server_credentials.cc b/src/node/ext/server_credentials.cc
index 0ff58bb20924101d3378530a23470752f9eab1e0..e070ff1f265ec7d3a3b7721ef8b218509f190e0b 100644
--- a/src/node/ext/server_credentials.cc
+++ b/src/node/ext/server_credentials.cc
@@ -78,12 +78,12 @@ void ServerCredentials::Init(Local<Object> exports) {
   tpl->SetClassName(Nan::New("ServerCredentials").ToLocalChecked());
   tpl->InstanceTemplate()->SetInternalFieldCount(1);
   Local<Function> ctr = tpl->GetFunction();
-  Nan::Set(ctr, Nan::New("createSsl").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(CreateSsl)).ToLocalChecked());
+  Nan::Set(
+      ctr, Nan::New("createSsl").ToLocalChecked(),
+      Nan::GetFunction(Nan::New<FunctionTemplate>(CreateSsl)).ToLocalChecked());
   Nan::Set(ctr, Nan::New("createInsecure").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(CreateInsecure)).ToLocalChecked());
+           Nan::GetFunction(Nan::New<FunctionTemplate>(CreateInsecure))
+               .ToLocalChecked());
   fun_tpl.Reset(tpl);
   constructor = new Nan::Callback(ctr);
   Nan::Set(exports, Nan::New("ServerCredentials").ToLocalChecked(), ctr);
@@ -99,9 +99,9 @@ Local<Value> ServerCredentials::WrapStruct(
   Nan::EscapableHandleScope scope;
   const int argc = 1;
   Local<Value> argv[argc] = {
-    Nan::New<External>(reinterpret_cast<void *>(credentials))};
-  MaybeLocal<Object> maybe_instance = Nan::NewInstance(
-      constructor->GetFunction(), argc, argv);
+      Nan::New<External>(reinterpret_cast<void *>(credentials))};
+  MaybeLocal<Object> maybe_instance =
+      Nan::NewInstance(constructor->GetFunction(), argc, argv);
   if (maybe_instance.IsEmpty()) {
     return scope.Escape(Nan::Null());
   } else {
@@ -160,13 +160,13 @@ NAN_METHOD(ServerCredentials::CreateSsl) {
   }
   Local<Array> pair_list = Local<Array>::Cast(info[1]);
   uint32_t key_cert_pair_count = pair_list->Length();
-  grpc_ssl_pem_key_cert_pair *key_cert_pairs = new grpc_ssl_pem_key_cert_pair[
-      key_cert_pair_count];
+  grpc_ssl_pem_key_cert_pair *key_cert_pairs =
+      new grpc_ssl_pem_key_cert_pair[key_cert_pair_count];
 
   Local<String> key_key = Nan::New("private_key").ToLocalChecked();
   Local<String> cert_key = Nan::New("cert_chain").ToLocalChecked();
 
-  for(uint32_t i = 0; i < key_cert_pair_count; i++) {
+  for (uint32_t i = 0; i < key_cert_pair_count; i++) {
     Local<Value> pair_val = Nan::Get(pair_list, i).ToLocalChecked();
     if (!pair_val->IsObject()) {
       delete[] key_cert_pairs;
diff --git a/src/node/ext/server_credentials.h b/src/node/ext/server_credentials.h
index bf279e481c64ec3768ab5ff9d490cf023cc13737..808088f6e24520c897dc5ce6a894bb3a7d1c04d7 100644
--- a/src/node/ext/server_credentials.h
+++ b/src/node/ext/server_credentials.h
@@ -34,8 +34,8 @@
 #ifndef NET_GRPC_NODE_SERVER_CREDENTIALS_H_
 #define NET_GRPC_NODE_SERVER_CREDENTIALS_H_
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include "grpc/grpc.h"
 #include "grpc/grpc_security.h"
 
diff --git a/src/node/ext/server_uv.cc b/src/node/ext/server_uv.cc
index 789938318ebfd99bb8864b8b407fab2167335981..709921b7fc1b207bc90132ce00e28a914f62776c 100644
--- a/src/node/ext/server_uv.cc
+++ b/src/node/ext/server_uv.cc
@@ -35,8 +35,8 @@
 
 #include "server.h"
 
-#include <node.h>
 #include <nan.h>
+#include <node.h>
 #include "grpc/grpc.h"
 #include "grpc/support/time.h"
 
@@ -60,22 +60,14 @@ static Callback *shutdown_callback = NULL;
 
 class ServerShutdownOp : public Op {
  public:
-  ServerShutdownOp(grpc_server *server): server(server) {
-  }
+  ServerShutdownOp(grpc_server *server) : server(server) {}
 
-  ~ServerShutdownOp() {
-  }
+  ~ServerShutdownOp() {}
 
-  Local<Value> GetNodeValue() const {
-    return Nan::Null();
-  }
+  Local<Value> GetNodeValue() const { return Nan::Null(); }
 
-  bool ParseOp(Local<Value> value, grpc_op *out) {
-    return true;
-  }
-  bool IsFinalOp() {
-    return false;
-  }
+  bool ParseOp(Local<Value> value, grpc_op *out) { return true; }
+  bool IsFinalOp() { return false; }
   void OnComplete(bool success) {
     /* Because cancel_all_calls was called, we assume that shutdown_and_notify
        completes successfully */
@@ -88,12 +80,9 @@ class ServerShutdownOp : public Op {
   std::string GetTypeString() const { return "shutdown"; }
 };
 
-Server::Server(grpc_server *server) : wrapped_server(server) {
-}
+Server::Server(grpc_server *server) : wrapped_server(server) {}
 
-Server::~Server() {
-  this->ShutdownServer();
-}
+Server::~Server() { this->ShutdownServer(); }
 
 NAN_METHOD(ServerShutdownCallback) {
   if (!info[0]->IsNull()) {
@@ -105,10 +94,10 @@ void Server::ShutdownServer() {
   Nan::HandleScope scope;
   if (this->wrapped_server != NULL) {
     if (shutdown_callback == NULL) {
-      Local<FunctionTemplate>callback_tpl =
+      Local<FunctionTemplate> callback_tpl =
           Nan::New<FunctionTemplate>(ServerShutdownCallback);
-      shutdown_callback = new Callback(
-          Nan::GetFunction(callback_tpl).ToLocalChecked());
+      shutdown_callback =
+          new Callback(Nan::GetFunction(callback_tpl).ToLocalChecked());
     }
 
     ServerShutdownOp *op = new ServerShutdownOp(this->wrapped_server);
diff --git a/src/node/ext/slice.cc b/src/node/ext/slice.cc
index 104dd9e22cdaeb660f1a62940c463b0b5a6b2f01..70e73628e79829099b305946d41e45f5c3457029 100644
--- a/src/node/ext/slice.cc
+++ b/src/node/ext/slice.cc
@@ -31,10 +31,10 @@
  *
  */
 
-#include <node.h>
-#include <nan.h>
 #include <grpc/slice.h>
 #include <grpc/support/alloc.h>
+#include <nan.h>
+#include <node.h>
 
 #include "slice.h"
 
@@ -49,19 +49,19 @@ using v8::Value;
 
 namespace {
 void SliceFreeCallback(char *data, void *hint) {
-  grpc_slice *slice = reinterpret_cast<grpc_slice*>(hint);
+  grpc_slice *slice = reinterpret_cast<grpc_slice *>(hint);
   grpc_slice_unref(*slice);
   delete slice;
 }
 
 void string_destroy_func(void *user_data) {
-  delete reinterpret_cast<Nan::Utf8String*>(user_data);
+  delete reinterpret_cast<Nan::Utf8String *>(user_data);
 }
 
 void buffer_destroy_func(void *user_data) {
-  delete reinterpret_cast<PersistentValue*>(user_data);
+  delete reinterpret_cast<PersistentValue *>(user_data);
 }
-} // namespace
+}  // namespace
 
 grpc_slice CreateSliceFromString(const Local<String> source) {
   Nan::HandleScope scope;
@@ -73,28 +73,32 @@ grpc_slice CreateSliceFromString(const Local<String> source) {
 grpc_slice CreateSliceFromBuffer(const Local<Value> source) {
   // Prerequisite: ::node::Buffer::HasInstance(source)
   Nan::HandleScope scope;
-  return grpc_slice_new_with_user_data(::node::Buffer::Data(source),
-                                       ::node::Buffer::Length(source),
-                                       buffer_destroy_func,
-                                       new PersistentValue(source));
+  return grpc_slice_new_with_user_data(
+      ::node::Buffer::Data(source), ::node::Buffer::Length(source),
+      buffer_destroy_func, new PersistentValue(source));
 }
 Local<String> CopyStringFromSlice(const grpc_slice slice) {
   Nan::EscapableHandleScope scope;
   if (GRPC_SLICE_LENGTH(slice) == 0) {
     return scope.Escape(Nan::EmptyString());
   }
-  return scope.Escape(Nan::New<String>(
-      const_cast<char *>(reinterpret_cast<const char *>(GRPC_SLICE_START_PTR(slice))),
-      GRPC_SLICE_LENGTH(slice)).ToLocalChecked());
+  return scope.Escape(
+      Nan::New<String>(const_cast<char *>(reinterpret_cast<const char *>(
+                           GRPC_SLICE_START_PTR(slice))),
+                       GRPC_SLICE_LENGTH(slice))
+          .ToLocalChecked());
 }
 
 Local<Value> CreateBufferFromSlice(const grpc_slice slice) {
   Nan::EscapableHandleScope scope;
   grpc_slice *slice_ptr = new grpc_slice;
   *slice_ptr = grpc_slice_ref(slice);
-  return scope.Escape(Nan::NewBuffer(
-      const_cast<char *>(reinterpret_cast<const char *>(GRPC_SLICE_START_PTR(*slice_ptr))),
-      GRPC_SLICE_LENGTH(*slice_ptr), SliceFreeCallback, slice_ptr).ToLocalChecked());
+  return scope.Escape(
+      Nan::NewBuffer(
+          const_cast<char *>(
+              reinterpret_cast<const char *>(GRPC_SLICE_START_PTR(*slice_ptr))),
+          GRPC_SLICE_LENGTH(*slice_ptr), SliceFreeCallback, slice_ptr)
+          .ToLocalChecked());
 }
 
 }  // namespace node
diff --git a/src/node/ext/slice.h b/src/node/ext/slice.h
index 7dcb1bd45a8e3ae395335283722d8d4f7013572d..89c8ecaf7251336bb193258007e49f613a0c46ff 100644
--- a/src/node/ext/slice.h
+++ b/src/node/ext/slice.h
@@ -31,14 +31,15 @@
  *
  */
 
-#include <node.h>
-#include <nan.h>
 #include <grpc/slice.h>
+#include <nan.h>
+#include <node.h>
 
 namespace grpc {
 namespace node {
 
-typedef Nan::Persistent<v8::Value, Nan::CopyablePersistentTraits<v8::Value>> PersistentValue;
+typedef Nan::Persistent<v8::Value, Nan::CopyablePersistentTraits<v8::Value>>
+    PersistentValue;
 
 grpc_slice CreateSliceFromString(const v8::Local<v8::String> source);
 
diff --git a/src/node/ext/timeval.cc b/src/node/ext/timeval.cc
index 9284db62ef6a32b8a26f8555d59b9ad891370716..741c324c66bc0cb081e10c04880afc41a54fac80 100644
--- a/src/node/ext/timeval.cc
+++ b/src/node/ext/timeval.cc
@@ -31,8 +31,8 @@
  *
  */
 
-#include <limits>
 #include <cstdint>
+#include <limits>
 
 #include "grpc/grpc.h"
 #include "grpc/support/time.h"
diff --git a/src/node/performance/benchmark_client.js b/src/node/performance/benchmark_client.js
index 5ef5260a96d7e0e740e135372d80af659619a44f..e7c426b2ff5befde3572e2c48fdc41af16730d63 100644
--- a/src/node/performance/benchmark_client.js
+++ b/src/node/performance/benchmark_client.js
@@ -88,7 +88,10 @@ function timeDiffToNanos(time_diff) {
  */
 function BenchmarkClient(server_targets, channels, histogram_params,
     security_params) {
-  var options = {};
+  var options = {
+    "grpc.max_receive_message_length": -1,
+    "grpc.max_send_message_length": -1
+  };
   var creds;
   if (security_params) {
     var ca_path;
@@ -180,6 +183,8 @@ BenchmarkClient.prototype.startClosedLoop = function(
 
   self.last_wall_time = process.hrtime();
 
+  self.last_usage = process.cpuUsage();
+
   var makeCall;
 
   var argument;
@@ -270,6 +275,8 @@ BenchmarkClient.prototype.startPoisson = function(
 
   self.last_wall_time = process.hrtime();
 
+  self.last_usage = process.cpuUsage();
+
   var makeCall;
 
   var argument;
@@ -354,9 +361,11 @@ BenchmarkClient.prototype.startPoisson = function(
  */
 BenchmarkClient.prototype.mark = function(reset) {
   var wall_time_diff = process.hrtime(this.last_wall_time);
+  var usage_diff = process.cpuUsage(this.last_usage);
   var histogram = this.histogram;
   if (reset) {
     this.last_wall_time = process.hrtime();
+    this.last_usage = process.cpuUsage();
     this.histogram = new Histogram(histogram.resolution,
                                    histogram.max_possible);
   }
@@ -371,9 +380,8 @@ BenchmarkClient.prototype.mark = function(reset) {
       count: histogram.getCount()
     },
     time_elapsed: wall_time_diff[0] + wall_time_diff[1] / 1e9,
-    // Not sure how to measure these values
-    time_user: 0,
-    time_system: 0
+    time_user: usage_diff.user / 1000000,
+    time_system: usage_diff.system / 1000000
   };
 };
 
diff --git a/src/node/performance/benchmark_client_express.js b/src/node/performance/benchmark_client_express.js
index e749956599dc15c30e49c9bf9bb9ce31ef4d6056..157bf1b6dece10b2f8fd679de5b70ffa2d82f047 100644
--- a/src/node/performance/benchmark_client_express.js
+++ b/src/node/performance/benchmark_client_express.js
@@ -95,7 +95,6 @@ function BenchmarkClient(server_targets, channels, histogram_params,
     var host_port;
     host_port = server_targets[i % server_targets.length].split(':');
     var new_options = _.assign({hostname: host_port[0], port: +host_port[1]}, options);
-    new_options.agent = new protocol.Agent(new_options);
     this.client_options[i] = new_options;
   }
 
@@ -137,6 +136,7 @@ BenchmarkClient.prototype.startClosedLoop = function(
   }
 
   self.last_wall_time = process.hrtime();
+  self.last_usage = process.cpuUsage();
 
   var argument = {
     response_size: resp_size,
@@ -207,6 +207,7 @@ BenchmarkClient.prototype.startPoisson = function(
   }
 
   self.last_wall_time = process.hrtime();
+  self.last_usage = process.cpuUsage();
 
   var argument = {
     response_size: resp_size,
@@ -264,9 +265,11 @@ BenchmarkClient.prototype.startPoisson = function(
  */
 BenchmarkClient.prototype.mark = function(reset) {
   var wall_time_diff = process.hrtime(this.last_wall_time);
+  var usage_diff = process.cpuUsage(this.last_usage);
   var histogram = this.histogram;
   if (reset) {
     this.last_wall_time = process.hrtime();
+    this.last_usage = process.cpuUsage();
     this.histogram = new Histogram(histogram.resolution,
                                    histogram.max_possible);
   }
@@ -281,9 +284,8 @@ BenchmarkClient.prototype.mark = function(reset) {
       count: histogram.getCount()
     },
     time_elapsed: wall_time_diff[0] + wall_time_diff[1] / 1e9,
-    // Not sure how to measure these values
-    time_user: 0,
-    time_system: 0
+    time_user: usage_diff.user / 1000000,
+    time_system: usage_diff.system / 1000000
   };
 };
 
diff --git a/src/node/performance/benchmark_server.js b/src/node/performance/benchmark_server.js
index ea85029d980dd3df3fa5cca6a0c1836fb8fca70b..a4d5ee1c26c29cc749395340c49e350f137bc40d 100644
--- a/src/node/performance/benchmark_server.js
+++ b/src/node/performance/benchmark_server.js
@@ -132,7 +132,12 @@ function BenchmarkServer(host, port, tls, generic, response_size) {
     server_creds = grpc.ServerCredentials.createInsecure();
   }
 
-  var server = new grpc.Server();
+  var options = {
+    "grpc.max_receive_message_length": -1,
+    "grpc.max_send_message_length": -1
+  };
+
+  var server = new grpc.Server(options);
   this.port = server.bind(host + ':' + port, server_creds);
   if (generic) {
     server.addService(genericService, {
@@ -156,6 +161,7 @@ util.inherits(BenchmarkServer, EventEmitter);
 BenchmarkServer.prototype.start = function() {
   this.server.start();
   this.last_wall_time = process.hrtime();
+  this.last_usage = process.cpuUsage();
   this.emit('started');
 };
 
@@ -175,14 +181,15 @@ BenchmarkServer.prototype.getPort = function() {
  */
 BenchmarkServer.prototype.mark = function(reset) {
   var wall_time_diff = process.hrtime(this.last_wall_time);
+  var usage_diff = process.cpuUsage(this.last_usage);
   if (reset) {
     this.last_wall_time = process.hrtime();
+    this.last_usage = process.cpuUsage();
   }
   return {
     time_elapsed: wall_time_diff[0] + wall_time_diff[1] / 1e9,
-    // Not sure how to measure these values
-    time_user: 0,
-    time_system: 0
+    time_user: usage_diff.user / 1000000,
+    time_system: usage_diff.system / 1000000
   };
 };
 
diff --git a/src/node/performance/benchmark_server_express.js b/src/node/performance/benchmark_server_express.js
index 4b695eb467db12ad3b75ac8380f81c7c7c729e64..fab4f5307c1cd9f93e59555f3984d27db3aab07a 100644
--- a/src/node/performance/benchmark_server_express.js
+++ b/src/node/performance/benchmark_server_express.js
@@ -81,6 +81,7 @@ BenchmarkServer.prototype.start = function() {
   var self = this;
   this.server.listen(this.input_port, this.input_hostname, function() {
     self.last_wall_time = process.hrtime();
+    self.last_usage = process.cpuUsage();
     self.emit('started');
   });
 };
@@ -91,14 +92,15 @@ BenchmarkServer.prototype.getPort = function() {
 
 BenchmarkServer.prototype.mark = function(reset) {
   var wall_time_diff = process.hrtime(this.last_wall_time);
+  var usage_diff = process.cpuUsage(this.last_usage);
   if (reset) {
     this.last_wall_time = process.hrtime();
+    this.last_usage = process.cpuUsage();
   }
   return {
     time_elapsed: wall_time_diff[0] + wall_time_diff[1] / 1e9,
-    // Not sure how to measure these values
-    time_user: 0,
-    time_system: 0
+    time_user: usage_diff.user / 1000000,
+    time_system: usage_diff.system / 1000000
   };
 };
 
diff --git a/src/objective-c/BoringSSL.podspec b/src/objective-c/BoringSSL.podspec
index 7880aad10ba124b9b54027bd32d6a6f18c915eac..651bd4977d81434b81aef9c9059d9a838327366e 100644
--- a/src/objective-c/BoringSSL.podspec
+++ b/src/objective-c/BoringSSL.podspec
@@ -31,7 +31,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'BoringSSL'
-  version = '8.1'
+  version = '8.2'
   s.version  = version
   s.summary  = 'BoringSSL is a fork of OpenSSL that is designed to meet Google’s needs.'
   # Adapted from the homepage:
@@ -113,7 +113,6 @@ Pod::Spec.new do |s|
   s.subspec 'Interface' do |ss|
     ss.header_mappings_dir = 'include/openssl'
     ss.source_files = 'include/openssl/*.h'
-    ss.exclude_files = 'include/openssl/arm_arch.h'
   end
   s.subspec 'Implementation' do |ss|
     ss.header_mappings_dir = '.'
@@ -150,6 +149,11 @@ Pod::Spec.new do |s|
       #include "ssl.h"
       #include "crypto.h"
       #include "aes.h"
+      /* The following macros are defined by base.h. The latter is the first file included by the    
+         other headers. */    
+      #if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)    
+      #  include "arm_arch.h"   
+      #endif
       #include "asn1.h"
       #include "asn1_mac.h"
       #include "asn1t.h"
diff --git a/src/objective-c/GRPCClient/GRPCCall.h b/src/objective-c/GRPCClient/GRPCCall.h
index 7645bb1d34a99d2c6eca10f8ac71e9622f896414..5e9324c445627b2f36658cf3980d8e5590ae9e82 100644
--- a/src/objective-c/GRPCClient/GRPCCall.h
+++ b/src/objective-c/GRPCClient/GRPCCall.h
@@ -253,6 +253,13 @@ extern id const kGRPCTrailersKey;
  */
 + (void)setCallSafety:(GRPCCallSafety)callSafety host:(NSString *)host path:(NSString *)path;
 
+/**
+ * Set the dispatch queue to be used for callbacks.
+ *
+ * This configuration is only effective before the call starts.
+ */
+- (void)setResponseDispatchQueue:(dispatch_queue_t)queue;
+
 // TODO(jcanizales): Let specify a deadline. As a category of GRXWriter?
 @end
 
diff --git a/src/objective-c/GRPCClient/GRPCCall.m b/src/objective-c/GRPCClient/GRPCCall.m
index 051138ea4da3ec7235e1996aea99cad81460923f..f9d13fea578b7a5124e0ec27d280b9bfc088c182 100644
--- a/src/objective-c/GRPCClient/GRPCCall.m
+++ b/src/objective-c/GRPCClient/GRPCCall.m
@@ -113,6 +113,10 @@ static NSMutableDictionary *callFlags;
   // the SendClose op is added.
   BOOL _unaryCall;
   NSMutableArray *_unaryOpBatch;
+
+  // The dispatch queue to be used for enqueuing responses to user. Defaulted to the main dispatch
+  // queue
+  dispatch_queue_t _responseQueue;
 }
 
 @synthesize state = _state;
@@ -175,10 +179,19 @@ static NSMutableDictionary *callFlags;
       _unaryCall = YES;
       _unaryOpBatch = [NSMutableArray arrayWithCapacity:kMaxClientBatch];
     }
+
+    _responseQueue = dispatch_get_main_queue();
   }
   return self;
 }
 
+- (void)setResponseDispatchQueue:(dispatch_queue_t)queue {
+  if (_state != GRXWriterStateNotStarted) {
+    return;
+  }
+  _responseQueue = queue;
+}
+
 #pragma mark Finish
 
 - (void)finishWithError:(NSError *)errorOrNil {
@@ -424,7 +437,8 @@ static NSMutableDictionary *callFlags;
   // that the life of the instance is determined by this retain cycle.
   _retainSelf = self;
 
-  _responseWriteable = [[GRXConcurrentWriteable alloc] initWithWriteable:writeable];
+  _responseWriteable = [[GRXConcurrentWriteable alloc] initWithWriteable:writeable
+                                                           dispatchQueue:_responseQueue];
 
   _wrappedCall = [[GRPCWrappedCall alloc] initWithHost:_host path:_path];
   NSAssert(_wrappedCall, @"Error allocating RPC objects. Low memory?");
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
index 46e9fee7e1fe885f4ab50660f08b95d0113f3eae..1faba3e20b9fd031e2de0f6549f61d62afcac528 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
@@ -315,7 +315,7 @@
 }
 
 - (void)dealloc {
-  grpc_call_destroy(_call);
+  grpc_call_unref(_call);
 }
 
 @end
diff --git a/src/objective-c/RxLibrary/GRXConcurrentWriteable.h b/src/objective-c/RxLibrary/GRXConcurrentWriteable.h
index b2775f98b56e5c19039d4eeb075e6dbf7b0a0562..07004f6d4dc66e7eb0fb4dc7c6d5c6479524b262 100644
--- a/src/objective-c/RxLibrary/GRXConcurrentWriteable.h
+++ b/src/objective-c/RxLibrary/GRXConcurrentWriteable.h
@@ -53,7 +53,9 @@
  * The GRXWriteable instance is retained until writesFinishedWithError: is sent to it, and released
  * after that.
  */
-- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable
+                    dispatchQueue:(dispatch_queue_t)queue NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable;
 
 /**
  * Enqueues writeValue: to be sent to the writeable in the main thread.
diff --git a/src/objective-c/RxLibrary/GRXConcurrentWriteable.m b/src/objective-c/RxLibrary/GRXConcurrentWriteable.m
index 08bd079aea59121f50e0040f9ce0350eb42c5485..88aa7a7282fbf7b94eba5e46dc2a8bd7f11cbdaa 100644
--- a/src/objective-c/RxLibrary/GRXConcurrentWriteable.m
+++ b/src/objective-c/RxLibrary/GRXConcurrentWriteable.m
@@ -51,14 +51,20 @@
 }
 
 // Designated initializer
-- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable {
+- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable
+                    dispatchQueue:(dispatch_queue_t)queue {
   if (self = [super init]) {
-    _writeableQueue = dispatch_get_main_queue();
+    _writeableQueue = queue;
     _writeable = writeable;
   }
   return self;
 }
 
+- (instancetype)initWithWriteable:(id<GRXWriteable>)writeable {
+  return [self initWithWriteable:writeable
+                   dispatchQueue:dispatch_get_main_queue()];
+}
+
 - (void)enqueueValue:(id)value completionHandler:(void (^)())handler {
   dispatch_async(_writeableQueue, ^{
     // We're racing a possible cancellation performed by another thread. To turn all already-
diff --git a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
index 6d94116c7592e5cff23094371878891fa4d40657..a78dd93993f9c4670d6497c5918fda7e40e762ba 100644
--- a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
+++ b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
@@ -258,7 +258,7 @@ unsigned int parse_h2_length(const char *field) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
@@ -437,7 +437,7 @@ unsigned int parse_h2_length(const char *field) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
diff --git a/src/objective-c/tests/GRPCClientTests.m b/src/objective-c/tests/GRPCClientTests.m
index 76c15003f603a5b97c5f261db5f645c09cc7e335..e36f5c3ee937e81db6148079988b69f8c91f858a 100644
--- a/src/objective-c/tests/GRPCClientTests.m
+++ b/src/objective-c/tests/GRPCClientTests.m
@@ -353,4 +353,59 @@ static GRPCProtoMethod *kUnaryCallMethod;
   [self waitForExpectationsWithTimeout:TEST_TIMEOUT handler:nil];
 }
 
+- (void)testAlternateDispatchQueue {
+  const int32_t kPayloadSize = 100;
+  RMTSimpleRequest *request = [RMTSimpleRequest message];
+  request.responseSize = kPayloadSize;
+
+  __weak XCTestExpectation *expectation1 = [self expectationWithDescription:@"AlternateDispatchQueue1"];
+
+  // Use default (main) dispatch queue
+  NSString *main_queue_label = [NSString stringWithUTF8String:dispatch_queue_get_label(dispatch_get_main_queue())];
+
+  GRXWriter *requestsWriter1 = [GRXWriter writerWithValue:[request data]];
+
+  GRPCCall *call1 = [[GRPCCall alloc] initWithHost:kHostAddress
+                                              path:kUnaryCallMethod.HTTPPath
+                                    requestsWriter:requestsWriter1];
+
+  id<GRXWriteable> responsesWriteable1 = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
+    NSString *label = [NSString stringWithUTF8String:dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL)];
+    XCTAssert([label isEqualToString:main_queue_label]);
+
+    [expectation1 fulfill];
+  } completionHandler:^(NSError *errorOrNil) {
+  }];
+
+  [call1 startWithWriteable:responsesWriteable1];
+
+  [self waitForExpectationsWithTimeout:TEST_TIMEOUT handler:nil];
+
+  // Use a custom  queue
+  __weak XCTestExpectation *expectation2 = [self expectationWithDescription:@"AlternateDispatchQueue2"];
+
+  NSString *queue_label = @"test.queue1";
+  dispatch_queue_t queue = dispatch_queue_create([queue_label UTF8String], DISPATCH_QUEUE_SERIAL);
+
+  GRXWriter *requestsWriter2 = [GRXWriter writerWithValue:[request data]];
+
+  GRPCCall *call2 = [[GRPCCall alloc] initWithHost:kHostAddress
+                                              path:kUnaryCallMethod.HTTPPath
+                                    requestsWriter:requestsWriter2];
+
+  [call2 setResponseDispatchQueue:queue];
+
+  id<GRXWriteable> responsesWriteable2 = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
+    NSString *label = [NSString stringWithUTF8String:dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL)];
+    XCTAssert([label isEqualToString:queue_label]);
+
+    [expectation2 fulfill];
+  } completionHandler:^(NSError *errorOrNil) {
+  }];
+
+  [call2 startWithWriteable:responsesWriteable2];
+
+  [self waitForExpectationsWithTimeout:TEST_TIMEOUT handler:nil];
+}
+
 @end
diff --git a/src/objective-c/tests/InteropTestsLocalCleartext.m b/src/objective-c/tests/InteropTestsLocalCleartext.m
index 94cdf859653954ad52cbb4d385a915b737a3dadc..cdcdd8a88c705f706f66cbbbd89eff30b766589c 100644
--- a/src/objective-c/tests/InteropTestsLocalCleartext.m
+++ b/src/objective-c/tests/InteropTestsLocalCleartext.m
@@ -36,7 +36,11 @@
 
 #import "InteropTests.h"
 
-static NSString * const kLocalCleartextHost = @"localhost:5050";
+// The server address is derived from preprocessor macro, which is
+// in turn derived from environment variable of the same name.
+#define NSStringize_helper(x) #x
+#define NSStringize(x) @NSStringize_helper(x)
+static NSString * const kLocalCleartextHost = NSStringize(HOST_PORT_LOCAL);
 
 // The Protocol Buffers encoding overhead of local interop server. Acquired
 // by experiment. Adjust this when server's proto file changes.
diff --git a/src/objective-c/tests/InteropTestsLocalSSL.m b/src/objective-c/tests/InteropTestsLocalSSL.m
index 3c78b65ede99bf3733e5a53e5493e69a52b727bf..45e62d29b9a1e03da33a80531786e1f411c1295e 100644
--- a/src/objective-c/tests/InteropTestsLocalSSL.m
+++ b/src/objective-c/tests/InteropTestsLocalSSL.m
@@ -35,8 +35,11 @@
 #import <GRPCClient/internal_testing/GRPCCall+InternalTests.h>
 
 #import "InteropTests.h"
-
-static NSString * const kLocalSSLHost = @"localhost:5051";
+// The server address is derived from preprocessor macro, which is
+// in turn derived from environment variable of the same name.
+#define NSStringize_helper(x) #x
+#define NSStringize(x) @NSStringize_helper(x)
+static NSString * const kLocalSSLHost = NSStringize(HOST_PORT_LOCALSSL);
 
 // The Protocol Buffers encoding overhead of local interop server. Acquired
 // by experiment. Adjust this when server's proto file changes.
diff --git a/src/objective-c/tests/InteropTestsRemote.m b/src/objective-c/tests/InteropTestsRemote.m
index ff1193302b0d885485a03571b297a3d5637be403..5260fe4570b459d055faf0fa03aefe6eb135401c 100644
--- a/src/objective-c/tests/InteropTestsRemote.m
+++ b/src/objective-c/tests/InteropTestsRemote.m
@@ -36,7 +36,11 @@
 
 #import "InteropTests.h"
 
-static NSString * const kRemoteSSLHost = @"grpc-test.sandbox.googleapis.com";
+// The server address is derived from preprocessor macro, which is
+// in turn derived from environment variable of the same name.
+#define NSStringize_helper(x) #x
+#define NSStringize(x) @NSStringize_helper(x)
+static NSString * const kRemoteSSLHost = NSStringize(HOST_PORT_REMOTE);
 
 // The Protocol Buffers encoding overhead of remote interop server. Acquired
 // by experiment. Adjust this when server's proto file changes.
diff --git a/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m b/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m
index 9edfbc2639d2525408fb420b09c6e00cad454f8e..a7f190d2b4ad7e81edcec7374916e75fc2c81eac 100644
--- a/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m
+++ b/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m
@@ -39,7 +39,12 @@
 
 #import "InteropTests.h"
 
-static NSString * const kRemoteSSLHost = @"grpc-test.sandbox.googleapis.com";
+// The server address is derived from preprocessor macro, which is
+// in turn derived from environment variable of the same name.
+#define NSStringize_helper(x) #x
+#define NSStringize(x) @NSStringize_helper(x)
+static NSString * const kRemoteSSLHost = NSStringize(HOST_PORT_REMOTE);
+
 
 // The Protocol Buffers encoding overhead of remote interop server. Acquired
 // by experiment. Adjust this when server's proto file changes.
diff --git a/src/objective-c/tests/Tests.xcodeproj/project.pbxproj b/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
index 97de723a22a61371c006ad428af66163aca0b43a..b01d5ffceaaf006966af0e78bde3b6341e045389 100644
--- a/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
+++ b/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
@@ -1282,6 +1282,9 @@
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"DEBUG=1",
 					"$(inherited)",
+					"HOST_PORT_LOCALSSL=$(HOST_PORT_LOCALSSL)",
+					"HOST_PORT_LOCAL=$(HOST_PORT_LOCAL)",
+					"HOST_PORT_REMOTE=$(HOST_PORT_REMOTE)",
 				);
 				GCC_SYMBOLS_PRIVATE_EXTERN = NO;
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
@@ -1565,6 +1568,7 @@
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"DEBUG=1",
 					"$(inherited)",
+					"HOST_PORT_REMOTE=$(HOST_PORT_REMOTE)",
 				);
 				GCC_SYMBOLS_PRIVATE_EXTERN = NO;
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
diff --git a/src/objective-c/tests/run_tests.sh b/src/objective-c/tests/run_tests.sh
index 0e82bcaa44a9c0212e560e5acf7bc0284725fc36..2432209f4f194755be0fa2385a8fdd952a424ceb 100755
--- a/src/objective-c/tests/run_tests.sh
+++ b/src/objective-c/tests/run_tests.sh
@@ -59,6 +59,9 @@ xcodebuild \
     -workspace Tests.xcworkspace \
     -scheme AllTests \
     -destination name="iPhone 6" \
+    HOST_PORT_LOCALSSL=localhost:5051 \
+    HOST_PORT_LOCAL=localhost:5050 \
+    HOST_PORT_REMOTE=grpc-test.sandbox.googleapis.com \
     test | xcpretty
 
 echo "TIME:  $(date)"
@@ -84,4 +87,5 @@ xcodebuild \
     -workspace Tests.xcworkspace \
     -scheme InteropTestsRemoteWithCronet \
     -destination name="iPhone 6" \
+    HOST_PORT_REMOTE=grpc-test.sandbox.googleapis.com \
     test | xcpretty
diff --git a/src/php/ext/grpc/call.c b/src/php/ext/grpc/call.c
index 48a374fa08ef0127b8b987872a575e87d8d61d6d..d3fd88416b42518c87d8f29b02fea62797ddfdd6 100644
--- a/src/php/ext/grpc/call.c
+++ b/src/php/ext/grpc/call.c
@@ -65,7 +65,7 @@ static zend_object_handlers call_ce_handlers;
 /* Frees and destroys an instance of wrapped_grpc_call */
 PHP_GRPC_FREE_WRAPPED_FUNC_START(wrapped_grpc_call)
   if (p->owned && p->wrapped != NULL) {
-    grpc_call_destroy(p->wrapped);
+    grpc_call_unref(p->wrapped);
   }
 PHP_GRPC_FREE_WRAPPED_FUNC_END()
 
diff --git a/src/php/lib/Grpc/BaseStub.php b/src/php/lib/Grpc/BaseStub.php
index ed504f85a869a193e48efd9e2726db9fbce2144a..24934491b4368d64b30599b46c7d99b718d14de3 100644
--- a/src/php/lib/Grpc/BaseStub.php
+++ b/src/php/lib/Grpc/BaseStub.php
@@ -87,7 +87,7 @@ class BaseStub
                                  'ChannelCredentials::create methods');
         }
         if ($channel) {
-            if (!is_a($channel, 'Channel')) {
+            if (!is_a($channel, 'Grpc\Channel')) {
                 throw new \Exception('The channel argument is not a'.
                                      'Channel object');
             }
diff --git a/src/proto/grpc/lb/v1/load_balancer.proto b/src/proto/grpc/lb/v1/load_balancer.proto
index 44a5150a7e068d10adddf65149fda5bd3a6b14c7..a2502fb284a34070e9397a8e4e110d8505bb77a9 100644
--- a/src/proto/grpc/lb/v1/load_balancer.proto
+++ b/src/proto/grpc/lb/v1/load_balancer.proto
@@ -45,6 +45,20 @@ message Duration {
   int32 nanos = 2;
 }
 
+message Timestamp {
+
+  // Represents seconds of UTC time since Unix epoch
+  // 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
+  // 9999-12-31T23:59:59Z inclusive.
+  int64 seconds = 1;
+
+  // Non-negative fractions of a second at nanosecond resolution. Negative
+  // second values with fractions must still have non-negative nanos values
+  // that count forward in time. Must be from 0 to 999,999,999
+  // inclusive.
+  int32 nanos = 2;
+}
+
 service LoadBalancer {
   // Bidirectional rpc to get a list of servers.
   rpc BalanceLoad(stream LoadBalanceRequest)
@@ -63,22 +77,37 @@ message LoadBalanceRequest {
 }
 
 message InitialLoadBalanceRequest {
-  // Name of load balanced service (IE, service.grpc.gslb.google.com). Its
+  // Name of load balanced service (IE, balancer.service.com)
   // length should be less than 256 bytes.
   string name = 1;
 }
 
 // Contains client level statistics that are useful to load balancing. Each
-// count should be reset to zero after reporting the stats.
+// count except the timestamp should be reset to zero after reporting the stats.
 message ClientStats {
-  // The total number of requests sent by the client since the last report.
-  int64 total_requests = 1;
+  // The timestamp of generating the report.
+  Timestamp timestamp = 1;
 
-  // The number of client rpc errors since the last report.
-  int64 client_rpc_errors = 2;
+  // The total number of RPCs that started.
+  int64 num_calls_started = 2;
 
-  // The number of dropped requests since the last report.
-  int64 dropped_requests = 3;
+  // The total number of RPCs that finished.
+  int64 num_calls_finished = 3;
+
+  // The total number of RPCs that were dropped by the client because of rate
+  // limiting.
+  int64 num_calls_finished_with_drop_for_rate_limiting = 4;
+
+  // The total number of RPCs that were dropped by the client because of load
+  // balancing.
+  int64 num_calls_finished_with_drop_for_load_balancing = 5;
+
+  // The total number of RPCs that failed to reach a server except dropped RPCs.
+  int64 num_calls_finished_with_client_failed_to_send = 6;
+
+  // The total number of RPCs that finished and are known to have been received
+  // by a server.
+  int64 num_calls_finished_known_received = 7;
 }
 
 message LoadBalanceResponse {
@@ -120,6 +149,10 @@ message ServerList {
   Duration expiration_interval = 3;
 }
 
+// Contains server information. When none of the [drop_for_*] fields are true,
+// use the other fields. When drop_for_rate_limiting is true, ignore all other
+// fields. Use drop_for_load_balancing only when it is true and
+// drop_for_rate_limiting is false.
 message Server {
   // A resolved address for the server, serialized in network-byte-order. It may
   // either be an IPv4 or IPv6 address.
@@ -137,6 +170,10 @@ message Server {
   string load_balance_token = 3;
 
   // Indicates whether this particular request should be dropped by the client
-  // when this server is chosen from the list.
-  bool drop_request = 4;
+  // for rate limiting.
+  bool drop_for_rate_limiting = 4;
+
+  // Indicates whether this particular request should be dropped by the client
+  // for load balancing.
+  bool drop_for_load_balancing = 5;
 }
diff --git a/src/proto/grpc/status/BUILD b/src/proto/grpc/status/BUILD
index c17f87eb3de559402cf56e14b9f6353a219dd392..71363bd1b639971ca50915e0d3d44351cb3fbd5f 100644
--- a/src/proto/grpc/status/BUILD
+++ b/src/proto/grpc/status/BUILD
@@ -37,7 +37,5 @@ grpc_proto_library(
     name = "status_proto",
     srcs = ["status.proto"],
     has_services = False,
-    well_known_protos = "@submodule_protobuf//:well_known_protos",
+    well_known_protos = "@com_google_protobuf//:well_known_protos",
 )
-
-
diff --git a/src/python/grpcio/.gitignore b/src/python/grpcio/.gitignore
index 3309795948cd9027a72a80de7e27ca028e118e78..d0ee1e10fdd5ed33d66f297281a3a67686fdd3f4 100644
--- a/src/python/grpcio/.gitignore
+++ b/src/python/grpcio/.gitignore
@@ -11,7 +11,6 @@ dist/
 .cache/
 nosetests.xml
 doc/
-_grpcio_metadata.py
 htmlcov/
 grpc/_cython/_credentials
 poison.c
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/call.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/call.pyx.pxi
index cc3bd7a067297a5fb26c94ce8fdb42e3305c7485..aa3558b8436bbf182bbe02f0885d98e93376f0ef 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/call.pyx.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/call.pyx.pxi
@@ -106,7 +106,7 @@ cdef class Call:
 
   def __dealloc__(self):
     if self.c_call != NULL:
-      grpc_call_destroy(self.c_call)
+      grpc_call_unref(self.c_call)
     grpc_shutdown()
 
   # The object *should* always be valid from Python. Used for debugging.
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
index 0b2bdef48be9d4fc97ea6804f509ce549ba40787..4f1776e002178e40bd74c7432b70d9dbf5ccda3e 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
@@ -329,7 +329,7 @@ cdef extern from "grpc/grpc.h":
                                                const char *description,
                                                void *reserved) nogil
   char *grpc_call_get_peer(grpc_call *call) nogil
-  void grpc_call_destroy(grpc_call *call) nogil
+  void grpc_call_unref(grpc_call *call) nogil
 
   grpc_channel *grpc_insecure_channel_create(const char *target,
                                              const grpc_channel_args *args,
diff --git a/src/python/grpcio/grpc/_grpcio_metadata.py b/src/python/grpcio/grpc/_grpcio_metadata.py
new file mode 100644
index 0000000000000000000000000000000000000000..a0cb0dd067f1eb68790e1908a17cf257fae609c3
--- /dev/null
+++ b/src/python/grpcio/grpc/_grpcio_metadata.py
@@ -0,0 +1,32 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio/grpc/_grpcio_metadata.py.template`!!!
+
+__version__ = """1.4.0.dev0"""
diff --git a/src/python/grpcio_tests/tests/http2/negative_http2_client.py b/src/python/grpcio_tests/tests/http2/negative_http2_client.py
index b184e62cfd4cfb2c95500108a8a34f6f920809f3..90f54e80bbf3571d32179d982bc98bfad1a6c813 100644
--- a/src/python/grpcio_tests/tests/http2/negative_http2_client.py
+++ b/src/python/grpcio_tests/tests/http2/negative_http2_client.py
@@ -96,8 +96,6 @@ def _rst_during_data(stub):
 
 def _rst_after_data(stub):
     resp_future = stub.UnaryCall.future(_SIMPLE_REQUEST)
-    _validate_payload_type_and_length(
-        next(resp_future), messages_pb2.COMPRESSABLE, _RESPONSE_SIZE)
     _validate_status_code_and_details(resp_future, grpc.StatusCode.INTERNAL,
                                       "Received RST_STREAM with error code 0")
 
diff --git a/src/ruby/end2end/forking_client_client.rb b/src/ruby/end2end/forking_client_client.rb
new file mode 100755
index 0000000000000000000000000000000000000000..c358d79f5997ebcddde42ce50cee5b3be383f571
--- /dev/null
+++ b/src/ruby/end2end/forking_client_client.rb
@@ -0,0 +1,69 @@
+#!/usr/bin/env ruby
+
+# 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.
+
+# Prompted by and minimal repro of https://github.com/grpc/grpc/issues/10658
+
+require_relative './end2end_common'
+
+def main
+  server_port = ''
+  OptionParser.new do |opts|
+    opts.on('--client_control_port=P', String) do
+      STDERR.puts 'client control port not used'
+    end
+    opts.on('--server_port=P', String) do |p|
+      server_port = p
+    end
+  end.parse!
+
+  p = fork do
+    stub = Echo::EchoServer::Stub.new("localhost:#{server_port}",
+                                      :this_channel_is_insecure)
+    stub.echo(Echo::EchoRequest.new(request: 'hello'))
+  end
+
+  begin
+    Timeout.timeout(10) do
+      Process.wait(p)
+    end
+  rescue Timeout::Error
+    STDERR.puts "timeout waiting for forked process #{p}"
+    Process.kill('SIGKILL', p)
+    Process.wait(p)
+    raise 'Timed out waiting for client process. ' \
+      'It likely hangs when using gRPC after loading it and then forking'
+  end
+
+  client_exit_code = $CHILD_STATUS
+  fail "forked process failed #{client_exit_code}" if client_exit_code != 0
+end
+
+main
diff --git a/src/ruby/end2end/forking_client_driver.rb b/src/ruby/end2end/forking_client_driver.rb
new file mode 100755
index 0000000000000000000000000000000000000000..2c67b33590df696e3e81efa65a71d04001c66eea
--- /dev/null
+++ b/src/ruby/end2end/forking_client_driver.rb
@@ -0,0 +1,69 @@
+#!/usr/bin/env ruby
+
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require_relative './end2end_common'
+
+def main
+  STDERR.puts 'start server'
+  server_runner = ServerRunner.new(EchoServerImpl)
+  server_port = server_runner.run
+
+  # TODO(apolcyn) Can we get rid of this sleep?
+  # Without it, an immediate call to the just started EchoServer
+  # fails with UNAVAILABLE
+  sleep 1
+
+  STDERR.puts 'start client'
+  _, client_pid = start_client('forking_client_client.rb',
+                               server_port)
+
+  begin
+    Timeout.timeout(10) do
+      Process.wait(client_pid)
+    end
+  rescue Timeout::Error
+    STDERR.puts "timeout wait for client pid #{client_pid}"
+    Process.kill('SIGKILL', client_pid)
+    Process.wait(client_pid)
+    STDERR.puts 'killed client child'
+    raise 'Timed out waiting for client process. ' \
+      'It likely hangs when requiring grpc, then forking, then using grpc '
+  end
+
+  client_exit_code = $CHILD_STATUS
+  if client_exit_code != 0
+    fail "forking client client failed, exit code #{client_exit_code}"
+  end
+
+  server_runner.stop
+end
+
+main
diff --git a/src/ruby/end2end/grpc_class_init_client.rb b/src/ruby/end2end/grpc_class_init_client.rb
new file mode 100755
index 0000000000000000000000000000000000000000..ee79292119a0499e0f7784901c14bd132ba9a43b
--- /dev/null
+++ b/src/ruby/end2end/grpc_class_init_client.rb
@@ -0,0 +1,77 @@
+#!/usr/bin/env ruby
+
+# 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.
+
+# For GRPC::Core classes, which use the grpc c-core, object init
+# is interesting because it's related to overall library init.
+
+require_relative './end2end_common'
+
+def main
+  grpc_class = ''
+  OptionParser.new do |opts|
+    opts.on('--grpc_class=P', String) do |p|
+      grpc_class = p
+    end
+  end.parse!
+
+  test_proc = nil
+
+  case grpc_class
+  when 'channel'
+    test_proc = proc do
+      GRPC::Core::Channel.new('dummy_host', nil, :this_channel_is_insecure)
+    end
+  when 'server'
+    test_proc = proc do
+      GRPC::Core::Server.new({})
+    end
+  when 'channel_credentials'
+    test_proc = proc do
+      GRPC::Core::ChannelCredentials.new
+    end
+  when 'call_credentials'
+    test_proc = proc do
+      GRPC::Core::CallCredentials.new(proc { |noop| noop })
+    end
+  when 'compression_options'
+    test_proc = proc do
+      GRPC::Core::CompressionOptions.new
+    end
+  else
+    fail "bad --grpc_class=#{grpc_class} param"
+  end
+
+  th = Thread.new { test_proc.call }
+  test_proc.call
+  th.join
+end
+
+main
diff --git a/src/ruby/end2end/grpc_class_init_driver.rb b/src/ruby/end2end/grpc_class_init_driver.rb
new file mode 100755
index 0000000000000000000000000000000000000000..764d029f1494df9889069680922669a416cfc0b6
--- /dev/null
+++ b/src/ruby/end2end/grpc_class_init_driver.rb
@@ -0,0 +1,67 @@
+#!/usr/bin/env ruby
+
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require_relative './end2end_common'
+
+def main
+  native_grpc_classes = %w( channel
+                            server
+                            channel_credentials
+                            call_credentials
+                            compression_options )
+
+  native_grpc_classes.each do |grpc_class|
+    STDERR.puts 'start client'
+    this_dir = File.expand_path(File.dirname(__FILE__))
+    client_path = File.join(this_dir, 'grpc_class_init_client.rb')
+    client_pid = Process.spawn(RbConfig.ruby,
+                               client_path,
+                               "--grpc_class=#{grpc_class}")
+    begin
+      Timeout.timeout(10) do
+        Process.wait(client_pid)
+      end
+    rescue Timeout::Error
+      STDERR.puts "timeout waiting for client pid #{client_pid}"
+      Process.kill('SIGKILL', client_pid)
+      Process.wait(client_pid)
+      STDERR.puts 'killed client child'
+      raise 'Timed out waiting for client process. ' \
+        'It likely hangs when the first constructed gRPC object has ' \
+        "type: #{grpc_class}"
+    end
+
+    client_exit_code = $CHILD_STATUS
+    fail "client failed, exit code #{client_exit_code}" if client_exit_code != 0
+  end
+end
+
+main
diff --git a/src/ruby/ext/grpc/rb_byte_buffer.c b/src/ruby/ext/grpc/rb_byte_buffer.c
index 65fa2f2cf624b08ed94e97123dbb31e9dda06794..f5be19298fdbd6279f05ad18938375f1faafd02d 100644
--- a/src/ruby/ext/grpc/rb_byte_buffer.c
+++ b/src/ruby/ext/grpc/rb_byte_buffer.c
@@ -33,15 +33,15 @@
 
 #include <ruby/ruby.h>
 
-#include "rb_grpc_imports.generated.h"
 #include "rb_byte_buffer.h"
+#include "rb_grpc_imports.generated.h"
 
-#include <grpc/grpc.h>
 #include <grpc/byte_buffer_reader.h>
+#include <grpc/grpc.h>
 #include <grpc/slice.h>
 #include "rb_grpc.h"
 
-grpc_byte_buffer* grpc_rb_s_to_byte_buffer(char *string, size_t length) {
+grpc_byte_buffer *grpc_rb_s_to_byte_buffer(char *string, size_t length) {
   grpc_slice slice = grpc_slice_from_copied_buffer(string, length);
   grpc_byte_buffer *buffer = grpc_raw_byte_buffer_create(&slice, 1);
   grpc_slice_unref(slice);
@@ -61,7 +61,7 @@ VALUE grpc_rb_byte_buffer_to_s(grpc_byte_buffer *buffer) {
     return Qnil;
   }
   while (grpc_byte_buffer_reader_next(&reader, &next) != 0) {
-    rb_str_cat(rb_string, (const char *) GRPC_SLICE_START_PTR(next),
+    rb_str_cat(rb_string, (const char *)GRPC_SLICE_START_PTR(next),
                GRPC_SLICE_LENGTH(next));
     grpc_slice_unref(next);
   }
@@ -71,7 +71,9 @@ VALUE grpc_rb_byte_buffer_to_s(grpc_byte_buffer *buffer) {
 
 VALUE grpc_rb_slice_to_ruby_string(grpc_slice slice) {
   if (GRPC_SLICE_START_PTR(slice) == NULL) {
-    rb_raise(rb_eRuntimeError, "attempt to convert uninitialized grpc_slice to ruby string");
+    rb_raise(rb_eRuntimeError,
+             "attempt to convert uninitialized grpc_slice to ruby string");
   }
-  return rb_str_new((char*)GRPC_SLICE_START_PTR(slice), GRPC_SLICE_LENGTH(slice));
+  return rb_str_new((char *)GRPC_SLICE_START_PTR(slice),
+                    GRPC_SLICE_LENGTH(slice));
 }
diff --git a/src/ruby/ext/grpc/rb_call.c b/src/ruby/ext/grpc/rb_call.c
index 344cb941ffb09eb8c5326e1d496718bfd0afbed3..0067e1086667f60fb1cbf8986f12f7474c78028a 100644
--- a/src/ruby/ext/grpc/rb_call.c
+++ b/src/ruby/ext/grpc/rb_call.c
@@ -33,12 +33,12 @@
 
 #include <ruby/ruby.h>
 
-#include "rb_grpc_imports.generated.h"
 #include "rb_call.h"
+#include "rb_grpc_imports.generated.h"
 
 #include <grpc/grpc.h>
-#include <grpc/support/alloc.h>
 #include <grpc/impl/codegen/compression_types.h>
+#include <grpc/support/alloc.h>
 
 #include "rb_byte_buffer.h"
 #include "rb_call_credentials.h"
@@ -101,7 +101,7 @@ typedef struct grpc_rb_call {
 static void destroy_call(grpc_rb_call *call) {
   /* Ensure that we only try to destroy the call once */
   if (call->wrapped != NULL) {
-    grpc_call_destroy(call->wrapped);
+    grpc_call_unref(call->wrapped);
     call->wrapped = NULL;
     grpc_rb_completion_queue_destroy(call->queue);
     call->queue = NULL;
@@ -113,7 +113,7 @@ static void grpc_rb_call_destroy(void *p) {
   if (p == NULL) {
     return;
   }
-  destroy_call((grpc_rb_call*)p);
+  destroy_call((grpc_rb_call *)p);
 }
 
 static size_t md_ary_datasize(const void *p) {
@@ -130,7 +130,9 @@ static size_t md_ary_datasize(const void *p) {
 
 static const rb_data_type_t grpc_rb_md_ary_data_type = {
     "grpc_metadata_array",
-    {GRPC_RB_GC_NOT_MARKED, GRPC_RB_GC_DONT_FREE, md_ary_datasize,
+    {GRPC_RB_GC_NOT_MARKED,
+     GRPC_RB_GC_DONT_FREE,
+     md_ary_datasize,
      {NULL, NULL}},
     NULL,
     NULL,
@@ -140,19 +142,20 @@ static const rb_data_type_t grpc_rb_md_ary_data_type = {
      * touches a hash object.
      * TODO(yugui) Directly use st_table and call the free function earlier?
      */
-     0,
+    0,
 #endif
 };
 
 /* Describes grpc_call struct for RTypedData */
-static const rb_data_type_t grpc_call_data_type = {
-    "grpc_call",
-    {GRPC_RB_GC_NOT_MARKED, grpc_rb_call_destroy, GRPC_RB_MEMSIZE_UNAVAILABLE,
-     {NULL, NULL}},
-    NULL,
-    NULL,
+static const rb_data_type_t grpc_call_data_type = {"grpc_call",
+                                                   {GRPC_RB_GC_NOT_MARKED,
+                                                    grpc_rb_call_destroy,
+                                                    GRPC_RB_MEMSIZE_UNAVAILABLE,
+                                                    {NULL, NULL}},
+                                                   NULL,
+                                                   NULL,
 #ifdef RUBY_TYPED_FREE_IMMEDIATELY
-    RUBY_TYPED_FREE_IMMEDIATELY
+                                                   RUBY_TYPED_FREE_IMMEDIATELY
 #endif
 };
 
@@ -175,7 +178,7 @@ static VALUE grpc_rb_call_cancel(VALUE self) {
   grpc_rb_call *call = NULL;
   grpc_call_error err;
   if (RTYPEDDATA_DATA(self) == NULL) {
-    //This call has been closed
+    // This call has been closed
     return Qnil;
   }
 
@@ -196,7 +199,7 @@ static VALUE grpc_rb_call_cancel(VALUE self) {
 static VALUE grpc_rb_call_close(VALUE self) {
   grpc_rb_call *call = NULL;
   TypedData_Get_Struct(self, grpc_rb_call, &grpc_call_data_type, call);
-  if(call != NULL) {
+  if (call != NULL) {
     destroy_call(call);
     RTYPEDDATA_DATA(self) = NULL;
   }
@@ -238,8 +241,8 @@ static VALUE grpc_rb_call_get_peer_cert(VALUE self) {
   }
 
   {
-    grpc_auth_property_iterator it =
-        grpc_auth_context_find_properties_by_name(ctx, GRPC_X509_PEM_CERT_PROPERTY_NAME);
+    grpc_auth_property_iterator it = grpc_auth_context_find_properties_by_name(
+        ctx, GRPC_X509_PEM_CERT_PROPERTY_NAME);
     const grpc_auth_property *prop = grpc_auth_property_iterator_next(&it);
     if (prop == NULL) {
       return Qnil;
@@ -388,21 +391,22 @@ static int grpc_rb_md_ary_fill_hash_cb(VALUE key, VALUE val, VALUE md_ary_obj) {
   long i;
   grpc_slice key_slice;
   grpc_slice value_slice;
-  char* tmp_str;
+  char *tmp_str;
 
   if (TYPE(key) == T_SYMBOL) {
     key_slice = grpc_slice_from_static_string(rb_id2name(SYM2ID(key)));
   } else if (TYPE(key) == T_STRING) {
-    key_slice = grpc_slice_from_copied_buffer(RSTRING_PTR(key), RSTRING_LEN(key));
+    key_slice =
+        grpc_slice_from_copied_buffer(RSTRING_PTR(key), RSTRING_LEN(key));
   } else {
-    rb_raise(rb_eTypeError, "grpc_rb_md_ary_fill_hash_cb: bad type for key parameter");
+    rb_raise(rb_eTypeError,
+             "grpc_rb_md_ary_fill_hash_cb: bad type for key parameter");
   }
 
   if (!grpc_header_key_is_legal(key_slice)) {
     tmp_str = grpc_slice_to_c_string(key_slice);
     rb_raise(rb_eArgError,
-             "'%s' is an invalid header key, must match [a-z0-9-_.]+",
-             tmp_str);
+             "'%s' is an invalid header key, must match [a-z0-9-_.]+", tmp_str);
     return ST_STOP;
   }
 
@@ -414,13 +418,14 @@ static int grpc_rb_md_ary_fill_hash_cb(VALUE key, VALUE val, VALUE md_ary_obj) {
     array_length = RARRAY_LEN(val);
     /* If the value is an array, add capacity for each value in the array */
     for (i = 0; i < array_length; i++) {
-      value_slice = grpc_slice_from_copied_buffer(RSTRING_PTR(rb_ary_entry(val, i)), RSTRING_LEN(rb_ary_entry(val, i)));
+      value_slice = grpc_slice_from_copied_buffer(
+          RSTRING_PTR(rb_ary_entry(val, i)), RSTRING_LEN(rb_ary_entry(val, i)));
       if (!grpc_is_binary_header(key_slice) &&
           !grpc_header_nonbin_value_is_legal(value_slice)) {
         // The value has invalid characters
         tmp_str = grpc_slice_to_c_string(value_slice);
-        rb_raise(rb_eArgError,
-                 "Header value '%s' has invalid characters", tmp_str);
+        rb_raise(rb_eArgError, "Header value '%s' has invalid characters",
+                 tmp_str);
         return ST_STOP;
       }
       md_ary->metadata[md_ary->count].key = key_slice;
@@ -428,21 +433,21 @@ static int grpc_rb_md_ary_fill_hash_cb(VALUE key, VALUE val, VALUE md_ary_obj) {
       md_ary->count += 1;
     }
   } else if (TYPE(val) == T_STRING) {
-    value_slice = grpc_slice_from_copied_buffer(RSTRING_PTR(val), RSTRING_LEN(val));
+    value_slice =
+        grpc_slice_from_copied_buffer(RSTRING_PTR(val), RSTRING_LEN(val));
     if (!grpc_is_binary_header(key_slice) &&
         !grpc_header_nonbin_value_is_legal(value_slice)) {
       // The value has invalid characters
       tmp_str = grpc_slice_to_c_string(value_slice);
-      rb_raise(rb_eArgError,
-               "Header value '%s' has invalid characters", tmp_str);
+      rb_raise(rb_eArgError, "Header value '%s' has invalid characters",
+               tmp_str);
       return ST_STOP;
     }
     md_ary->metadata[md_ary->count].key = key_slice;
     md_ary->metadata[md_ary->count].value = value_slice;
     md_ary->count += 1;
   } else {
-    rb_raise(rb_eArgError,
-               "Header values must be of type string or array");
+    rb_raise(rb_eArgError, "Header values must be of type string or array");
     return ST_STOP;
   }
 
@@ -474,8 +479,7 @@ static int grpc_rb_md_ary_capacity_hash_cb(VALUE key, VALUE val,
 /* grpc_rb_md_ary_convert converts a ruby metadata hash into
    a grpc_metadata_array.
 */
-void grpc_rb_md_ary_convert(VALUE md_ary_hash,
-                                   grpc_metadata_array *md_ary) {
+void grpc_rb_md_ary_convert(VALUE md_ary_hash, grpc_metadata_array *md_ary) {
   VALUE md_ary_obj = Qnil;
   if (md_ary_hash == Qnil) {
     return; /* Do nothing if the expected has value is nil */
@@ -511,12 +515,14 @@ VALUE grpc_rb_md_ary_to_h(grpc_metadata_array *md_ary) {
       rb_hash_aset(result, key, value);
     } else if (TYPE(value) == T_ARRAY) {
       /* Add the string to the returned array */
-      rb_ary_push(value, grpc_rb_slice_to_ruby_string(md_ary->metadata[i].value));
+      rb_ary_push(value,
+                  grpc_rb_slice_to_ruby_string(md_ary->metadata[i].value));
     } else {
       /* Add the current value with this key and the new one to an array */
       new_ary = rb_ary_new();
       rb_ary_push(new_ary, value);
-      rb_ary_push(new_ary, grpc_rb_slice_to_ruby_string(md_ary->metadata[i].value));
+      rb_ary_push(new_ary,
+                  grpc_rb_slice_to_ruby_string(md_ary->metadata[i].value));
       rb_hash_aset(result, key, new_ary);
     }
   }
@@ -556,10 +562,9 @@ static int grpc_rb_call_check_op_keys_hash_cb(VALUE key, VALUE val,
 /* grpc_rb_op_update_status_from_server adds the values in a ruby status
    struct to the 'send_status_from_server' portion of an op.
 */
-static void grpc_rb_op_update_status_from_server(grpc_op *op,
-                                                 grpc_metadata_array *md_ary,
-                                                 grpc_slice *send_status_details,
-                                                 VALUE status) {
+static void grpc_rb_op_update_status_from_server(
+    grpc_op *op, grpc_metadata_array *md_ary, grpc_slice *send_status_details,
+    VALUE status) {
   VALUE code = rb_struct_aref(status, sym_code);
   VALUE details = rb_struct_aref(status, sym_details);
   VALUE metadata_hash = rb_struct_aref(status, sym_metadata);
@@ -576,7 +581,8 @@ static void grpc_rb_op_update_status_from_server(grpc_op *op,
     return;
   }
 
-  *send_status_details = grpc_slice_from_copied_buffer(RSTRING_PTR(details), RSTRING_LEN(details));
+  *send_status_details =
+      grpc_slice_from_copied_buffer(RSTRING_PTR(details), RSTRING_LEN(details));
 
   op->data.send_status_from_server.status = NUM2INT(code);
   op->data.send_status_from_server.status_details = send_status_details;
@@ -687,7 +693,8 @@ static void grpc_run_batch_stack_fill_ops(run_batch_stack *st, VALUE ops_hash) {
         /* N.B. later there is no need to explicitly delete the metadata keys
          * and values, they are references to data in ruby objects. */
         grpc_rb_op_update_status_from_server(
-            &st->ops[st->op_num], &st->send_trailing_metadata, &st->send_status_details, this_value);
+            &st->ops[st->op_num], &st->send_trailing_metadata,
+            &st->send_status_details, this_value);
         break;
       case GRPC_OP_RECV_INITIAL_METADATA:
         st->ops[st->op_num].data.recv_initial_metadata.recv_initial_metadata =
@@ -749,12 +756,12 @@ static VALUE grpc_run_batch_stack_build_result(run_batch_stack *st) {
       case GRPC_OP_RECV_STATUS_ON_CLIENT:
         rb_struct_aset(
             result, sym_status,
-            rb_struct_new(grpc_rb_sStatus, UINT2NUM(st->recv_status),
-                          (GRPC_SLICE_START_PTR(st->recv_status_details) == NULL
-                               ? Qnil
-                               : grpc_rb_slice_to_ruby_string(st->recv_status_details)),
-                          grpc_rb_md_ary_to_h(&st->recv_trailing_metadata),
-                          NULL));
+            rb_struct_new(
+                grpc_rb_sStatus, UINT2NUM(st->recv_status),
+                (GRPC_SLICE_START_PTR(st->recv_status_details) == NULL
+                     ? Qnil
+                     : grpc_rb_slice_to_ruby_string(st->recv_status_details)),
+                grpc_rb_md_ary_to_h(&st->recv_trailing_metadata), NULL));
         break;
       case GRPC_OP_RECV_CLOSE_ON_SERVER:
         rb_struct_aset(result, sym_send_close, Qtrue);
@@ -791,7 +798,7 @@ static VALUE grpc_rb_call_run_batch(VALUE self, VALUE ops_hash) {
   VALUE result = Qnil;
   VALUE rb_write_flag = rb_ivar_get(self, id_write_flag);
   unsigned write_flag = 0;
-  void *tag = (void*)&st;
+  void *tag = (void *)&st;
 
   if (RTYPEDDATA_DATA(self) == NULL) {
     rb_raise(grpc_rb_eCallError, "Cannot run batch on closed call");
@@ -919,7 +926,8 @@ static void Init_grpc_op_codes() {
 }
 
 static void Init_grpc_metadata_keys() {
-  VALUE grpc_rb_mMetadataKeys = rb_define_module_under(grpc_rb_mGrpcCore, "MetadataKeys");
+  VALUE grpc_rb_mMetadataKeys =
+      rb_define_module_under(grpc_rb_mGrpcCore, "MetadataKeys");
   rb_define_const(grpc_rb_mMetadataKeys, "COMPRESSION_REQUEST_ALGORITHM",
                   rb_str_new2(GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY));
 }
diff --git a/src/ruby/ext/grpc/rb_call.h b/src/ruby/ext/grpc/rb_call.h
index 56becdc5a4edfaf6101d17bb531314e6fd914d6b..dc597f7ba73c14b6f4f71d73a7266fb4ef2caa3e 100644
--- a/src/ruby/ext/grpc/rb_call.h
+++ b/src/ruby/ext/grpc/rb_call.h
@@ -39,13 +39,13 @@
 #include <grpc/grpc.h>
 
 /* Gets the wrapped call from a VALUE. */
-grpc_call* grpc_rb_get_wrapped_call(VALUE v);
+grpc_call *grpc_rb_get_wrapped_call(VALUE v);
 
 /* Gets the VALUE corresponding to given grpc_call. */
 VALUE grpc_rb_wrap_call(grpc_call *c, grpc_completion_queue *q);
 
 /* Provides the details of an call error */
-const char* grpc_call_error_detail_of(grpc_call_error err);
+const char *grpc_call_error_detail_of(grpc_call_error err);
 
 /* Converts a metadata array to a hash. */
 VALUE grpc_rb_md_ary_to_h(grpc_metadata_array *md_ary);
@@ -53,8 +53,7 @@ VALUE grpc_rb_md_ary_to_h(grpc_metadata_array *md_ary);
 /* grpc_rb_md_ary_convert converts a ruby metadata hash into
    a grpc_metadata_array.
 */
-void grpc_rb_md_ary_convert(VALUE md_ary_hash,
-                            grpc_metadata_array *md_ary);
+void grpc_rb_md_ary_convert(VALUE md_ary_hash, grpc_metadata_array *md_ary);
 
 /* grpc_rb_eCallError is the ruby class of the exception thrown during call
    operations. */
diff --git a/src/ruby/ext/grpc/rb_call_credentials.c b/src/ruby/ext/grpc/rb_call_credentials.c
index 280f21c9731c2412729455587416781ccc1e3c4e..7a5a74580d137684869582d8a286c06795ce1571 100644
--- a/src/ruby/ext/grpc/rb_call_credentials.c
+++ b/src/ruby/ext/grpc/rb_call_credentials.c
@@ -33,8 +33,8 @@
 
 #include <ruby/ruby.h>
 
-#include "rb_grpc_imports.generated.h"
 #include "rb_call_credentials.h"
+#include "rb_grpc_imports.generated.h"
 
 #include <ruby/thread.h>
 
@@ -82,20 +82,18 @@ static VALUE grpc_rb_call_credentials_callback(VALUE callback_args) {
 static VALUE grpc_rb_call_credentials_callback_rescue(VALUE args,
                                                       VALUE exception_object) {
   VALUE result = rb_hash_new();
-  VALUE backtrace = rb_funcall(
-      rb_funcall(exception_object, rb_intern("backtrace"), 0),
-      rb_intern("join"),
-      1, rb_str_new2("\n\tfrom "));
-  VALUE rb_exception_info = rb_funcall(exception_object, rb_intern("inspect"), 0);
+  VALUE backtrace =
+      rb_funcall(rb_funcall(exception_object, rb_intern("backtrace"), 0),
+                 rb_intern("join"), 1, rb_str_new2("\n\tfrom "));
+  VALUE rb_exception_info =
+      rb_funcall(exception_object, rb_intern("inspect"), 0);
   (void)args;
   gpr_log(GPR_INFO, "Call credentials callback failed: %s\n%s",
-          StringValueCStr(rb_exception_info),
-          StringValueCStr(backtrace));
+          StringValueCStr(rb_exception_info), StringValueCStr(backtrace));
   rb_hash_aset(result, rb_str_new2("metadata"), Qnil);
   rb_hash_aset(result, rb_str_new2("status"),
                INT2NUM(GRPC_STATUS_UNAUTHENTICATED));
-  rb_hash_aset(result, rb_str_new2("details"),
-               rb_exception_info);
+  rb_hash_aset(result, rb_str_new2("details"), rb_exception_info);
   return result;
 }
 
@@ -118,7 +116,8 @@ static void grpc_rb_call_credentials_callback_with_gil(void *param) {
   result = rb_rescue(grpc_rb_call_credentials_callback, callback_args,
                      grpc_rb_call_credentials_callback_rescue, Qnil);
   // Both callbacks return a hash, so result should be a hash
-  grpc_rb_md_ary_convert(rb_hash_aref(result, rb_str_new2("metadata")), &md_ary);
+  grpc_rb_md_ary_convert(rb_hash_aref(result, rb_str_new2("metadata")),
+                         &md_ary);
   status = NUM2INT(rb_hash_aref(result, rb_str_new2("status")));
   details = rb_hash_aref(result, rb_str_new2("details"));
   error_details = StringValueCStr(details);
@@ -138,7 +137,7 @@ static void grpc_rb_call_credentials_plugin_get_metadata(
   params->callback = cb;
 
   grpc_rb_event_queue_enqueue(grpc_rb_call_credentials_callback_with_gil,
-                              (void*)(params));
+                              (void *)(params));
 }
 
 static void grpc_rb_call_credentials_plugin_destroy(void *state) {
@@ -172,13 +171,15 @@ static void grpc_rb_call_credentials_mark(void *p) {
 }
 
 static rb_data_type_t grpc_rb_call_credentials_data_type = {
-  "grpc_call_credentials",
-  {grpc_rb_call_credentials_mark, grpc_rb_call_credentials_free,
-   GRPC_RB_MEMSIZE_UNAVAILABLE, {NULL, NULL}},
-  NULL,
-  NULL,
+    "grpc_call_credentials",
+    {grpc_rb_call_credentials_mark,
+     grpc_rb_call_credentials_free,
+     GRPC_RB_MEMSIZE_UNAVAILABLE,
+     {NULL, NULL}},
+    NULL,
+    NULL,
 #ifdef RUBY_TYPED_FREE_IMMEDIATELY
-  RUBY_TYPED_FREE_IMMEDIATELY
+    RUBY_TYPED_FREE_IMMEDIATELY
 #endif
 };
 
@@ -188,7 +189,8 @@ static VALUE grpc_rb_call_credentials_alloc(VALUE cls) {
   grpc_rb_call_credentials *wrapper = ALLOC(grpc_rb_call_credentials);
   wrapper->wrapped = NULL;
   wrapper->mark = Qnil;
-  return TypedData_Wrap_Struct(cls, &grpc_rb_call_credentials_data_type, wrapper);
+  return TypedData_Wrap_Struct(cls, &grpc_rb_call_credentials_data_type,
+                               wrapper);
 }
 
 /* Creates a wrapping object for a given call credentials. This should only be
@@ -221,6 +223,8 @@ static VALUE grpc_rb_call_credentials_init(VALUE self, VALUE proc) {
   grpc_call_credentials *creds = NULL;
   grpc_metadata_credentials_plugin plugin;
 
+  grpc_ruby_once_init();
+
   TypedData_Get_Struct(self, grpc_rb_call_credentials,
                        &grpc_rb_call_credentials_data_type, wrapper);
 
@@ -230,7 +234,7 @@ static VALUE grpc_rb_call_credentials_init(VALUE self, VALUE proc) {
     rb_raise(rb_eTypeError, "Argument to CallCredentials#new must be a proc");
     return Qnil;
   }
-  plugin.state = (void*)proc;
+  plugin.state = (void *)proc;
   plugin.type = "";
 
   creds = grpc_metadata_credentials_create_from_plugin(plugin, NULL);
@@ -281,15 +285,12 @@ void Init_grpc_call_credentials() {
                    grpc_rb_call_credentials_compose, -1);
 
   id_callback = rb_intern("__callback");
-
-  grpc_rb_event_queue_thread_start();
 }
 
 /* Gets the wrapped grpc_call_credentials from the ruby wrapper */
 grpc_call_credentials *grpc_rb_get_wrapped_call_credentials(VALUE v) {
   grpc_rb_call_credentials *wrapper = NULL;
   TypedData_Get_Struct(v, grpc_rb_call_credentials,
-                       &grpc_rb_call_credentials_data_type,
-                       wrapper);
+                       &grpc_rb_call_credentials_data_type, wrapper);
   return wrapper->wrapped;
 }
diff --git a/src/ruby/ext/grpc/rb_channel.c b/src/ruby/ext/grpc/rb_channel.c
index 05f7160183b65be0de9aa33979a8a9224d6def0b..a8021837264296d19418f08ca5b5efea7c43e19c 100644
--- a/src/ruby/ext/grpc/rb_channel.c
+++ b/src/ruby/ext/grpc/rb_channel.c
@@ -34,9 +34,9 @@
 #include <ruby/ruby.h>
 #include <ruby/thread.h>
 
-#include "rb_grpc_imports.generated.h"
 #include "rb_byte_buffer.h"
 #include "rb_channel.h"
+#include "rb_grpc_imports.generated.h"
 
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>
@@ -89,10 +89,14 @@ typedef struct grpc_rb_channel {
 static void grpc_rb_channel_try_register_connection_polling(
     grpc_rb_channel *wrapper);
 static void grpc_rb_channel_safe_destroy(grpc_rb_channel *wrapper);
+static void *wait_until_channel_polling_thread_started_no_gil(void *);
+static void wait_until_channel_polling_thread_started_unblocking_func(void *);
 
 static grpc_completion_queue *channel_polling_cq;
 static gpr_mu global_connection_polling_mu;
+static gpr_cv global_connection_polling_cv;
 static int abort_channel_polling = 0;
+static int channel_polling_thread_started = 0;
 
 /* Destroys Channel instances. */
 static void grpc_rb_channel_free(void *p) {
@@ -166,6 +170,11 @@ static VALUE grpc_rb_channel_init(int argc, VALUE *argv, VALUE self) {
   grpc_channel_args args;
   MEMZERO(&args, grpc_channel_args, 1);
 
+  grpc_ruby_once_init();
+  rb_thread_call_without_gvl(
+      wait_until_channel_polling_thread_started_no_gil, NULL,
+      wait_until_channel_polling_thread_started_unblocking_func, NULL);
+
   /* "3" == 3 mandatory args */
   rb_scan_args(argc, argv, "3", &target, &channel_args, &credentials);
 
@@ -196,14 +205,14 @@ static VALUE grpc_rb_channel_init(int argc, VALUE *argv, VALUE self) {
 
   gpr_mu_lock(&wrapper->channel_mu);
   wrapper->abort_watch_connectivity_state = 0;
-  wrapper->current_connectivity_state = grpc_channel_check_connectivity_state(wrapper->wrapped, 0);
+  wrapper->current_connectivity_state =
+      grpc_channel_check_connectivity_state(wrapper->wrapped, 0);
   wrapper->safe_to_destroy = 0;
   wrapper->request_safe_destroy = 0;
 
   gpr_cv_broadcast(&wrapper->channel_cv);
   gpr_mu_unlock(&wrapper->channel_mu);
 
-
   grpc_rb_channel_try_register_connection_polling(wrapper);
 
   if (args.args != NULL) {
@@ -245,7 +254,8 @@ static VALUE grpc_rb_channel_get_connectivity_state(int argc, VALUE *argv,
     rb_raise(rb_eRuntimeError, "closed!");
     return Qnil;
   }
-  return LONG2NUM(grpc_channel_check_connectivity_state(wrapper->wrapped, grpc_try_to_connect));
+  return LONG2NUM(grpc_channel_check_connectivity_state(wrapper->wrapped,
+                                                        grpc_try_to_connect));
 }
 
 typedef struct watch_state_stack {
@@ -255,22 +265,21 @@ typedef struct watch_state_stack {
 } watch_state_stack;
 
 static void *watch_channel_state_without_gvl(void *arg) {
-  watch_state_stack *stack = (watch_state_stack*)arg;
+  watch_state_stack *stack = (watch_state_stack *)arg;
   gpr_timespec deadline = stack->deadline;
   grpc_rb_channel *wrapper = stack->wrapper;
   int last_state = stack->last_state;
-  void *return_value = (void*)0;
+  void *return_value = (void *)0;
 
   gpr_mu_lock(&wrapper->channel_mu);
-  while(wrapper->current_connectivity_state == last_state &&
-        !wrapper->request_safe_destroy &&
-        !wrapper->safe_to_destroy &&
-        !wrapper->abort_watch_connectivity_state &&
-        gpr_time_cmp(deadline, gpr_now(GPR_CLOCK_REALTIME)) > 0) {
+  while (wrapper->current_connectivity_state == last_state &&
+         !wrapper->request_safe_destroy && !wrapper->safe_to_destroy &&
+         !wrapper->abort_watch_connectivity_state &&
+         gpr_time_cmp(deadline, gpr_now(GPR_CLOCK_REALTIME)) > 0) {
     gpr_cv_wait(&wrapper->channel_cv, &wrapper->channel_mu, deadline);
   }
   if (wrapper->current_connectivity_state != last_state) {
-    return_value = (void*)1;
+    return_value = (void *)1;
   }
   gpr_mu_unlock(&wrapper->channel_mu);
 
@@ -278,7 +287,7 @@ static void *watch_channel_state_without_gvl(void *arg) {
 }
 
 static void watch_channel_state_unblocking_func(void *arg) {
-  grpc_rb_channel *wrapper = (grpc_rb_channel*)arg;
+  grpc_rb_channel *wrapper = (grpc_rb_channel *)arg;
   gpr_log(GPR_DEBUG, "GRPC_RUBY: watch channel state unblocking func called");
   gpr_mu_lock(&wrapper->channel_mu);
   wrapper->abort_watch_connectivity_state = 1;
@@ -298,7 +307,7 @@ static VALUE grpc_rb_channel_watch_connectivity_state(VALUE self,
                                                       VALUE deadline) {
   grpc_rb_channel *wrapper = NULL;
   watch_state_stack stack;
-  void* out;
+  void *out;
 
   TypedData_Get_Struct(self, grpc_rb_channel, &grpc_channel_data_type, wrapper);
 
@@ -308,14 +317,18 @@ static VALUE grpc_rb_channel_watch_connectivity_state(VALUE self,
   }
 
   if (!FIXNUM_P(last_state)) {
-    rb_raise(rb_eTypeError, "bad type for last_state. want a GRPC::Core::ChannelState constant");
+    rb_raise(
+        rb_eTypeError,
+        "bad type for last_state. want a GRPC::Core::ChannelState constant");
     return Qnil;
   }
 
   stack.wrapper = wrapper;
   stack.deadline = grpc_rb_time_timeval(deadline, 0);
   stack.last_state = NUM2LONG(last_state);
-  out = rb_thread_call_without_gvl(watch_channel_state_without_gvl, &stack, watch_channel_state_unblocking_func, wrapper);
+  out =
+      rb_thread_call_without_gvl(watch_channel_state_without_gvl, &stack,
+                                 watch_channel_state_unblocking_func, wrapper);
   if (out) {
     return Qtrue;
   }
@@ -420,7 +433,7 @@ static VALUE grpc_rb_channel_get_target(VALUE self) {
 // destroy.
 // Not safe to call while a channel's connection state is polled.
 static void grpc_rb_channel_try_register_connection_polling(
-  grpc_rb_channel *wrapper) {
+    grpc_rb_channel *wrapper) {
   grpc_connectivity_state conn_state;
   gpr_timespec sleep_time = gpr_time_add(
       gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(20, GPR_TIMESPAN));
@@ -436,6 +449,7 @@ static void grpc_rb_channel_try_register_connection_polling(
   }
   gpr_mu_lock(&global_connection_polling_mu);
 
+  GPR_ASSERT(channel_polling_thread_started || abort_channel_polling);
   conn_state = grpc_channel_check_connectivity_state(wrapper->wrapped, 0);
   if (conn_state != wrapper->current_connectivity_state) {
     wrapper->current_connectivity_state = conn_state;
@@ -469,7 +483,7 @@ static void grpc_rb_channel_safe_destroy(grpc_rb_channel *wrapper) {
 }
 
 // Note this loop breaks out with a single call of
-// "grpc_rb_event_unblocking_func".
+// "run_poll_channels_loop_no_gil".
 // This assumes that a ruby call the unblocking func
 // indicates process shutdown.
 // In the worst case, this stops polling channel connectivity
@@ -477,6 +491,14 @@ static void grpc_rb_channel_safe_destroy(grpc_rb_channel *wrapper) {
 static void *run_poll_channels_loop_no_gil(void *arg) {
   grpc_event event;
   (void)arg;
+  gpr_log(GPR_DEBUG, "GRPC_RUBY: run_poll_channels_loop_no_gil - begin");
+
+  gpr_mu_lock(&global_connection_polling_mu);
+  GPR_ASSERT(!channel_polling_thread_started);
+  channel_polling_thread_started = 1;
+  gpr_cv_broadcast(&global_connection_polling_cv);
+  gpr_mu_unlock(&global_connection_polling_mu);
+
   for (;;) {
     event = grpc_completion_queue_next(
         channel_polling_cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
@@ -484,19 +506,24 @@ static void *run_poll_channels_loop_no_gil(void *arg) {
       break;
     }
     if (event.type == GRPC_OP_COMPLETE) {
-      grpc_rb_channel_try_register_connection_polling((grpc_rb_channel *)event.tag);
+      grpc_rb_channel_try_register_connection_polling(
+          (grpc_rb_channel *)event.tag);
     }
   }
   grpc_completion_queue_destroy(channel_polling_cq);
-  gpr_log(GPR_DEBUG, "GRPC_RUBY: run_poll_channels_loop_no_gil - exit connection polling loop");
+  gpr_log(GPR_DEBUG,
+          "GRPC_RUBY: run_poll_channels_loop_no_gil - exit connection polling "
+          "loop");
   return NULL;
 }
 
 // Notify the channel polling loop to cleanup and shutdown.
-static void grpc_rb_event_unblocking_func(void *arg) {
+static void run_poll_channels_loop_unblocking_func(void *arg) {
   (void)arg;
   gpr_mu_lock(&global_connection_polling_mu);
-  gpr_log(GPR_DEBUG, "GRPC_RUBY: grpc_rb_event_unblocking_func - begin aborting connection polling");
+  gpr_log(GPR_DEBUG,
+          "GRPC_RUBY: grpc_rb_event_unblocking_func - begin aborting "
+          "connection polling");
   abort_channel_polling = 1;
   grpc_completion_queue_shutdown(channel_polling_cq);
   gpr_mu_unlock(&global_connection_polling_mu);
@@ -505,12 +532,41 @@ static void grpc_rb_event_unblocking_func(void *arg) {
 // Poll channel connectivity states in background thread without the GIL.
 static VALUE run_poll_channels_loop(VALUE arg) {
   (void)arg;
-  gpr_log(GPR_DEBUG, "GRPC_RUBY: run_poll_channels_loop - create connection polling thread");
+  gpr_log(
+      GPR_DEBUG,
+      "GRPC_RUBY: run_poll_channels_loop - create connection polling thread");
   rb_thread_call_without_gvl(run_poll_channels_loop_no_gil, NULL,
-                             grpc_rb_event_unblocking_func, NULL);
+                             run_poll_channels_loop_unblocking_func, NULL);
+
   return Qnil;
 }
 
+static void *wait_until_channel_polling_thread_started_no_gil(void *arg) {
+  (void)arg;
+  gpr_log(GPR_DEBUG, "GRPC_RUBY: wait for channel polling thread to start");
+  gpr_mu_lock(&global_connection_polling_mu);
+  while (!channel_polling_thread_started && !abort_channel_polling) {
+    gpr_cv_wait(&global_connection_polling_cv, &global_connection_polling_mu,
+                gpr_inf_future(GPR_CLOCK_REALTIME));
+  }
+  gpr_mu_unlock(&global_connection_polling_mu);
+
+  return NULL;
+}
+
+static void wait_until_channel_polling_thread_started_unblocking_func(
+    void *arg) {
+  (void)arg;
+  gpr_mu_lock(&global_connection_polling_mu);
+  gpr_log(GPR_DEBUG,
+          "GRPC_RUBY: "
+          "wait_until_channel_polling_thread_started_unblocking_func - begin "
+          "aborting connection polling");
+  abort_channel_polling = 1;
+  gpr_cv_broadcast(&global_connection_polling_cv);
+  gpr_mu_unlock(&global_connection_polling_mu);
+}
+
 /* Temporary fix for
  * https://github.com/GoogleCloudPlatform/google-cloud-ruby/issues/899.
  * Transports in idle channels can get destroyed. Normally c-core re-connects,
@@ -521,11 +577,26 @@ static VALUE run_poll_channels_loop(VALUE arg) {
  * calls - so that c-core can reconnect if needed, when there aren't any RPC's.
  * TODO(apolcyn) remove this when core handles new RPCs on dead connections.
  */
-static void start_poll_channels_loop() {
-  channel_polling_cq = grpc_completion_queue_create_for_next(NULL);
+void grpc_rb_channel_polling_thread_start() {
+  VALUE background_thread = Qnil;
+
+  GPR_ASSERT(!abort_channel_polling);
+  GPR_ASSERT(!channel_polling_thread_started);
+  GPR_ASSERT(channel_polling_cq == NULL);
+
   gpr_mu_init(&global_connection_polling_mu);
-  abort_channel_polling = 0;
-  rb_thread_create(run_poll_channels_loop, NULL);
+  gpr_cv_init(&global_connection_polling_cv);
+
+  channel_polling_cq = grpc_completion_queue_create_for_next(NULL);
+  background_thread = rb_thread_create(run_poll_channels_loop, NULL);
+
+  if (!RTEST(background_thread)) {
+    gpr_log(GPR_DEBUG, "GRPC_RUBY: failed to spawn channel polling thread");
+    gpr_mu_lock(&global_connection_polling_mu);
+    abort_channel_polling = 1;
+    gpr_cv_broadcast(&global_connection_polling_cv);
+    gpr_mu_unlock(&global_connection_polling_mu);
+  }
 }
 
 static void Init_grpc_propagate_masks() {
@@ -597,7 +668,6 @@ void Init_grpc_channel() {
   id_insecure_channel = rb_intern("this_channel_is_insecure");
   Init_grpc_propagate_masks();
   Init_grpc_connectivity_states();
-  start_poll_channels_loop();
 }
 
 /* Gets the wrapped channel from the ruby wrapper */
diff --git a/src/ruby/ext/grpc/rb_channel.h b/src/ruby/ext/grpc/rb_channel.h
index 77e1f6acbca9dac26fa3f5969f17e5cc86a171fb..fdceb79bca5181d9aabe50c7353f8f05db6f96fe 100644
--- a/src/ruby/ext/grpc/rb_channel.h
+++ b/src/ruby/ext/grpc/rb_channel.h
@@ -41,6 +41,8 @@
 /* Initializes the Channel class. */
 void Init_grpc_channel();
 
+void grpc_rb_channel_polling_thread_start();
+
 /* Gets the wrapped channel from the ruby wrapper */
 grpc_channel* grpc_rb_get_wrapped_channel(VALUE v);
 
diff --git a/src/ruby/ext/grpc/rb_channel_args.c b/src/ruby/ext/grpc/rb_channel_args.c
index 87c0e0a7055bec5cac7210669aa475e439bb4d6d..fa9ddee37281e32fdfde808aa711280b1c6629ce 100644
--- a/src/ruby/ext/grpc/rb_channel_args.c
+++ b/src/ruby/ext/grpc/rb_channel_args.c
@@ -33,8 +33,8 @@
 
 #include <ruby/ruby.h>
 
-#include "rb_grpc_imports.generated.h"
 #include "rb_channel_args.h"
+#include "rb_grpc_imports.generated.h"
 
 #include <grpc/grpc.h>
 
@@ -42,9 +42,12 @@
 
 static rb_data_type_t grpc_rb_channel_args_data_type = {
     "grpc_channel_args",
-    {GRPC_RB_GC_NOT_MARKED, GRPC_RB_GC_DONT_FREE, GRPC_RB_MEMSIZE_UNAVAILABLE,
+    {GRPC_RB_GC_NOT_MARKED,
+     GRPC_RB_GC_DONT_FREE,
+     GRPC_RB_MEMSIZE_UNAVAILABLE,
      {NULL, NULL}},
-    NULL, NULL,
+    NULL,
+    NULL,
 #ifdef RUBY_TYPED_FREE_IMMEDIATELY
     RUBY_TYPED_FREE_IMMEDIATELY
 #endif
@@ -137,11 +140,10 @@ static VALUE grpc_rb_hash_convert_to_channel_args0(VALUE as_value) {
     params->dst->num_args = num_args;
     params->dst->args = ALLOC_N(grpc_arg, num_args);
     MEMZERO(params->dst->args, grpc_arg, num_args);
-    rb_hash_foreach(params->src_hash,
-                    grpc_rb_channel_create_in_process_add_args_hash_cb,
-                    TypedData_Wrap_Struct(grpc_rb_cChannelArgs,
-                                          &grpc_rb_channel_args_data_type,
-                                          params->dst));
+    rb_hash_foreach(
+        params->src_hash, grpc_rb_channel_create_in_process_add_args_hash_cb,
+        TypedData_Wrap_Struct(grpc_rb_cChannelArgs,
+                              &grpc_rb_channel_args_data_type, params->dst));
     /* reset num_args as grpc_rb_channel_create_in_process_add_args_hash_cb
      * decrements it during has processing */
     params->dst->num_args = num_args;
@@ -157,7 +159,7 @@ void grpc_rb_hash_convert_to_channel_args(VALUE src_hash,
   /* Make a protected call to grpc_rb_hash_convert_channel_args */
   params.src_hash = src_hash;
   params.dst = dst;
-  rb_protect(grpc_rb_hash_convert_to_channel_args0, (VALUE) & params, &status);
+  rb_protect(grpc_rb_hash_convert_to_channel_args0, (VALUE)&params, &status);
   if (status != 0) {
     if (dst->args != NULL) {
       /* Free any allocated memory before propagating the error */
diff --git a/src/ruby/ext/grpc/rb_channel_credentials.c b/src/ruby/ext/grpc/rb_channel_credentials.c
index 5b7aa3417e6ce300a2bd561eec43d0266ab8b44e..db713ed8216d10cd477394217a325f43b5a954e0 100644
--- a/src/ruby/ext/grpc/rb_channel_credentials.c
+++ b/src/ruby/ext/grpc/rb_channel_credentials.c
@@ -35,8 +35,8 @@
 
 #include <string.h>
 
-#include "rb_grpc_imports.generated.h"
 #include "rb_channel_credentials.h"
+#include "rb_grpc_imports.generated.h"
 
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>
@@ -91,8 +91,10 @@ static void grpc_rb_channel_credentials_mark(void *p) {
 
 static rb_data_type_t grpc_rb_channel_credentials_data_type = {
     "grpc_channel_credentials",
-    {grpc_rb_channel_credentials_mark, grpc_rb_channel_credentials_free,
-     GRPC_RB_MEMSIZE_UNAVAILABLE, {NULL, NULL}},
+    {grpc_rb_channel_credentials_mark,
+     grpc_rb_channel_credentials_free,
+     GRPC_RB_MEMSIZE_UNAVAILABLE,
+     {NULL, NULL}},
     NULL,
     NULL,
 #ifdef RUBY_TYPED_FREE_IMMEDIATELY
@@ -106,13 +108,15 @@ static VALUE grpc_rb_channel_credentials_alloc(VALUE cls) {
   grpc_rb_channel_credentials *wrapper = ALLOC(grpc_rb_channel_credentials);
   wrapper->wrapped = NULL;
   wrapper->mark = Qnil;
-  return TypedData_Wrap_Struct(cls, &grpc_rb_channel_credentials_data_type, wrapper);
+  return TypedData_Wrap_Struct(cls, &grpc_rb_channel_credentials_data_type,
+                               wrapper);
 }
 
 /* Creates a wrapping object for a given channel credentials. This should only
  * be called with grpc_channel_credentials objects that are not already
  * associated with any Ruby object. */
-VALUE grpc_rb_wrap_channel_credentials(grpc_channel_credentials *c, VALUE mark) {
+VALUE grpc_rb_wrap_channel_credentials(grpc_channel_credentials *c,
+                                       VALUE mark) {
   VALUE rb_wrapper;
   grpc_rb_channel_credentials *wrapper;
   if (c == NULL) {
@@ -147,7 +151,8 @@ static ID id_pem_cert_chain;
     pem_private_key: (optional) PEM encoding of the client's private key
     pem_cert_chain: (optional) PEM encoding of the client's cert chain
     Initializes Credential instances. */
-static VALUE grpc_rb_channel_credentials_init(int argc, VALUE *argv, VALUE self) {
+static VALUE grpc_rb_channel_credentials_init(int argc, VALUE *argv,
+                                              VALUE self) {
   VALUE pem_root_certs = Qnil;
   VALUE pem_private_key = Qnil;
   VALUE pem_cert_chain = Qnil;
@@ -156,6 +161,9 @@ static VALUE grpc_rb_channel_credentials_init(int argc, VALUE *argv, VALUE self)
   grpc_ssl_pem_key_cert_pair key_cert_pair;
   const char *pem_root_certs_cstr = NULL;
   MEMZERO(&key_cert_pair, grpc_ssl_pem_key_cert_pair, 1);
+
+  grpc_ruby_once_init();
+
   /* "03" == no mandatory arg, 3 optional */
   rb_scan_args(argc, argv, "03", &pem_root_certs, &pem_private_key,
                &pem_cert_chain);
@@ -170,8 +178,8 @@ static VALUE grpc_rb_channel_credentials_init(int argc, VALUE *argv, VALUE self)
   } else {
     key_cert_pair.private_key = RSTRING_PTR(pem_private_key);
     key_cert_pair.cert_chain = RSTRING_PTR(pem_cert_chain);
-    creds = grpc_ssl_credentials_create(pem_root_certs_cstr,
-                                        &key_cert_pair, NULL);
+    creds =
+        grpc_ssl_credentials_create(pem_root_certs_cstr, &key_cert_pair, NULL);
   }
   if (creds == NULL) {
     rb_raise(rb_eRuntimeError, "could not create a credentials, not sure why");
@@ -230,8 +238,8 @@ static VALUE grpc_rb_set_default_roots_pem(VALUE self, VALUE roots) {
 }
 
 void Init_grpc_channel_credentials() {
-  grpc_rb_cChannelCredentials =
-      rb_define_class_under(grpc_rb_mGrpcCore, "ChannelCredentials", rb_cObject);
+  grpc_rb_cChannelCredentials = rb_define_class_under(
+      grpc_rb_mGrpcCore, "ChannelCredentials", rb_cObject);
 
   /* Allocates an object managed by the ruby runtime */
   rb_define_alloc_func(grpc_rb_cChannelCredentials,
@@ -259,7 +267,6 @@ void Init_grpc_channel_credentials() {
 grpc_channel_credentials *grpc_rb_get_wrapped_channel_credentials(VALUE v) {
   grpc_rb_channel_credentials *wrapper = NULL;
   TypedData_Get_Struct(v, grpc_rb_channel_credentials,
-                       &grpc_rb_channel_credentials_data_type,
-                       wrapper);
+                       &grpc_rb_channel_credentials_data_type, wrapper);
   return wrapper->wrapped;
 }
diff --git a/src/ruby/ext/grpc/rb_completion_queue.c b/src/ruby/ext/grpc/rb_completion_queue.c
index fd75d2f691f38039aca516885406990eda9da8aa..c9d67739a5f87dbedaf217f8953474fb03a75886 100644
--- a/src/ruby/ext/grpc/rb_completion_queue.c
+++ b/src/ruby/ext/grpc/rb_completion_queue.c
@@ -33,14 +33,14 @@
 
 #include <ruby/ruby.h>
 
-#include "rb_grpc_imports.generated.h"
 #include "rb_completion_queue.h"
+#include "rb_grpc_imports.generated.h"
 
 #include <ruby/thread.h>
 
 #include <grpc/grpc.h>
-#include <grpc/support/time.h>
 #include <grpc/support/log.h>
+#include <grpc/support/time.h>
 #include "rb_grpc.h"
 
 /* Used to allow grpc_completion_queue_next call to release the GIL */
@@ -54,14 +54,13 @@ typedef struct next_call_stack {
 
 /* Calls grpc_completion_queue_pluck without holding the ruby GIL */
 static void *grpc_rb_completion_queue_pluck_no_gil(void *param) {
-  next_call_stack *const next_call = (next_call_stack*)param;
+  next_call_stack *const next_call = (next_call_stack *)param;
   gpr_timespec increment = gpr_time_from_millis(20, GPR_TIMESPAN);
   gpr_timespec deadline;
   do {
     deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), increment);
-    next_call->event = grpc_completion_queue_pluck(next_call->cq,
-                                                   next_call->tag,
-                                                   deadline, NULL);
+    next_call->event = grpc_completion_queue_pluck(
+        next_call->cq, next_call->tag, deadline, NULL);
     if (next_call->event.type != GRPC_QUEUE_TIMEOUT ||
         gpr_time_cmp(deadline, next_call->timeout) > 0) {
       break;
@@ -81,7 +80,7 @@ void grpc_rb_completion_queue_destroy(grpc_completion_queue *cq) {
 }
 
 static void unblock_func(void *param) {
-  next_call_stack *const next_call = (next_call_stack*)param;
+  next_call_stack *const next_call = (next_call_stack *)param;
   next_call->interrupted = 1;
 }
 
@@ -111,7 +110,6 @@ grpc_event rb_completion_queue_pluck(grpc_completion_queue *queue, void *tag,
                                (void *)&next_call);
     /* If an interrupt prevented pluck from returning useful information, then
        any plucks that did complete must have timed out */
-  } while (next_call.interrupted &&
-           next_call.event.type == GRPC_QUEUE_TIMEOUT);
+  } while (next_call.interrupted && next_call.event.type == GRPC_QUEUE_TIMEOUT);
   return next_call.event;
 }
diff --git a/src/ruby/ext/grpc/rb_compression_options.c b/src/ruby/ext/grpc/rb_compression_options.c
index 6b2467ee4614decf0fee6f5ac28638230cc8df33..45c963dca6eddefd7aaff59c22d0588da3075cd2 100644
--- a/src/ruby/ext/grpc/rb_compression_options.c
+++ b/src/ruby/ext/grpc/rb_compression_options.c
@@ -33,15 +33,15 @@
 
 #include <ruby/ruby.h>
 
-#include "rb_compression_options.h"
 #include "rb_byte_buffer.h"
+#include "rb_compression_options.h"
 #include "rb_grpc_imports.generated.h"
 
 #include <grpc/compression.h>
 #include <grpc/grpc.h>
-#include <grpc/support/alloc.h>
 #include <grpc/impl/codegen/compression_types.h>
 #include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/alloc.h>
 #include <string.h>
 
 #include "rb_grpc.h"
@@ -100,8 +100,11 @@ static rb_data_type_t grpc_rb_compression_options_data_type = {
    Allocate the wrapped grpc compression options and
    initialize it here too. */
 static VALUE grpc_rb_compression_options_alloc(VALUE cls) {
-  grpc_rb_compression_options *wrapper =
-      gpr_malloc(sizeof(grpc_rb_compression_options));
+  grpc_rb_compression_options *wrapper = NULL;
+
+  grpc_ruby_once_init();
+
+  wrapper = gpr_malloc(sizeof(grpc_rb_compression_options));
   wrapper->wrapped = NULL;
   wrapper->wrapped = gpr_malloc(sizeof(grpc_compression_options));
   grpc_compression_options_init(wrapper->wrapped);
@@ -179,15 +182,16 @@ void grpc_rb_compression_options_algorithm_name_to_value_internal(
    * correct C string out of it. */
   algorithm_name_as_string = rb_funcall(algorithm_name, rb_intern("to_s"), 0);
 
-  name_slice = grpc_slice_from_copied_buffer(RSTRING_PTR(algorithm_name_as_string), RSTRING_LEN(algorithm_name_as_string));
+  name_slice =
+      grpc_slice_from_copied_buffer(RSTRING_PTR(algorithm_name_as_string),
+                                    RSTRING_LEN(algorithm_name_as_string));
 
   /* Raise an error if the name isn't recognized as a compression algorithm by
    * the algorithm parse function
    * in GRPC core. */
-  if(!grpc_compression_algorithm_parse(name_slice, algorithm_value)) {
+  if (!grpc_compression_algorithm_parse(name_slice, algorithm_value)) {
     tmp_str = grpc_slice_to_c_string(name_slice);
-    rb_raise(rb_eNameError, "Invalid compression algorithm name: %s",
-             tmp_str);
+    rb_raise(rb_eNameError, "Invalid compression algorithm name: %s", tmp_str);
   }
 
   grpc_slice_unref(name_slice);
diff --git a/src/ruby/ext/grpc/rb_event_thread.c b/src/ruby/ext/grpc/rb_event_thread.c
index 9e85bbcfbf2f46e2b8cfb89792d83995de77b1b1..9a3b56ddfb73fbc0334cbd1b1ff2f950fb84c3a4 100644
--- a/src/ruby/ext/grpc/rb_event_thread.c
+++ b/src/ruby/ext/grpc/rb_event_thread.c
@@ -33,20 +33,20 @@
 
 #include <ruby/ruby.h>
 
-#include "rb_grpc_imports.generated.h"
 #include "rb_event_thread.h"
+#include "rb_grpc_imports.generated.h"
 
 #include <stdbool.h>
 
-#include <ruby/thread.h>
 #include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
-#include <grpc/support/log.h>
+#include <ruby/thread.h>
 
 typedef struct grpc_rb_event {
   // callback will be called with argument while holding the GVL
-  void (*callback)(void*);
+  void (*callback)(void *);
   void *argument;
 
   struct grpc_rb_event *next;
@@ -65,8 +65,7 @@ typedef struct grpc_rb_event_queue {
 
 static grpc_rb_event_queue event_queue;
 
-void grpc_rb_event_queue_enqueue(void (*callback)(void*),
-                                 void *argument) {
+void grpc_rb_event_queue_enqueue(void (*callback)(void *), void *argument) {
   grpc_rb_event *event = gpr_malloc(sizeof(grpc_rb_event));
   event->callback = callback;
   event->argument = argument;
@@ -107,8 +106,7 @@ static void *grpc_rb_wait_for_event_no_gil(void *param) {
   (void)param;
   gpr_mu_lock(&event_queue.mu);
   while ((event = grpc_rb_event_queue_dequeue()) == NULL) {
-    gpr_cv_wait(&event_queue.cv,
-                &event_queue.mu,
+    gpr_cv_wait(&event_queue.cv, &event_queue.mu,
                 gpr_inf_future(GPR_CLOCK_REALTIME));
     if (event_queue.abort) {
       gpr_mu_unlock(&event_queue.mu);
@@ -132,10 +130,10 @@ static void grpc_rb_event_unblocking_func(void *arg) {
 static VALUE grpc_rb_event_thread(VALUE arg) {
   grpc_rb_event *event;
   (void)arg;
-  while(true) {
-    event = (grpc_rb_event*)rb_thread_call_without_gvl(
-        grpc_rb_wait_for_event_no_gil, NULL,
-        grpc_rb_event_unblocking_func, NULL);
+  while (true) {
+    event = (grpc_rb_event *)rb_thread_call_without_gvl(
+        grpc_rb_wait_for_event_no_gil, NULL, grpc_rb_event_unblocking_func,
+        NULL);
     if (event == NULL) {
       // Indicates that the thread needs to shut down
       break;
diff --git a/src/ruby/ext/grpc/rb_event_thread.h b/src/ruby/ext/grpc/rb_event_thread.h
index 46638bfcf531680c46ebbd761993128ed1e47e51..d7eff760a1797888bf7e6d4d1e07b5340e8c162f 100644
--- a/src/ruby/ext/grpc/rb_event_thread.h
+++ b/src/ruby/ext/grpc/rb_event_thread.h
@@ -33,5 +33,4 @@
 
 void grpc_rb_event_queue_thread_start();
 
-void grpc_rb_event_queue_enqueue(void (*callback)(void*),
-                                 void *argument);
+void grpc_rb_event_queue_enqueue(void (*callback)(void *), void *argument);
diff --git a/src/ruby/ext/grpc/rb_grpc.c b/src/ruby/ext/grpc/rb_grpc.c
index 17cd165a91da4abb29e95bd2f3ee588f3841d14e..5be8861e0c4c68b7169098e0263bd2b6af9b7fe1 100644
--- a/src/ruby/ext/grpc/rb_grpc.c
+++ b/src/ruby/ext/grpc/rb_grpc.c
@@ -33,8 +33,8 @@
 
 #include <ruby/ruby.h>
 
-#include "rb_grpc_imports.generated.h"
 #include "rb_grpc.h"
+#include "rb_grpc_imports.generated.h"
 
 #include <math.h>
 #include <ruby/vm.h>
@@ -46,16 +46,19 @@
 #include "rb_call_credentials.h"
 #include "rb_channel.h"
 #include "rb_channel_credentials.h"
+#include "rb_compression_options.h"
+#include "rb_event_thread.h"
 #include "rb_loader.h"
 #include "rb_server.h"
 #include "rb_server_credentials.h"
-#include "rb_compression_options.h"
 
 static VALUE grpc_rb_cTimeVal = Qnil;
 
 static rb_data_type_t grpc_rb_timespec_data_type = {
     "gpr_timespec",
-    {GRPC_RB_GC_NOT_MARKED, GRPC_RB_GC_DONT_FREE, GRPC_RB_MEMSIZE_UNAVAILABLE,
+    {GRPC_RB_GC_NOT_MARKED,
+     GRPC_RB_GC_DONT_FREE,
+     GRPC_RB_MEMSIZE_UNAVAILABLE,
      {NULL, NULL}},
     NULL,
     NULL,
@@ -84,8 +87,7 @@ VALUE grpc_rb_cannot_init(VALUE self) {
 /* Init/Clone func that fails by raising an exception. */
 VALUE grpc_rb_cannot_init_copy(VALUE copy, VALUE self) {
   (void)self;
-  rb_raise(rb_eTypeError,
-           "Copy initialization of %s is not supported",
+  rb_raise(rb_eTypeError, "Copy initialization of %s is not supported",
            rb_obj_classname(copy));
   return Qnil;
 }
@@ -143,8 +145,7 @@ gpr_timespec grpc_rb_time_timeval(VALUE time, int interval) {
         }
         t.tv_sec = (int64_t)f;
         if (f != t.tv_sec) {
-          rb_raise(rb_eRangeError, "%f out of Time range",
-                   RFLOAT_VALUE(time));
+          rb_raise(rb_eRangeError, "%f out of Time range", RFLOAT_VALUE(time));
         }
         t.tv_nsec = (int)(d * 1e9 + 0.5);
       }
@@ -269,9 +270,7 @@ static void Init_grpc_time_consts() {
   id_tv_nsec = rb_intern("tv_nsec");
 }
 
-static void grpc_rb_shutdown(void) {
-  grpc_shutdown();
-}
+static void grpc_rb_shutdown(void) { grpc_shutdown(); }
 
 /* Initialize the GRPC module structs */
 
@@ -291,17 +290,14 @@ VALUE sym_metadata = Qundef;
 
 static gpr_once g_once_init = GPR_ONCE_INIT;
 
-static void grpc_ruby_once_init() {
+static void grpc_ruby_once_init_internal() {
   grpc_init();
+  grpc_rb_event_queue_thread_start();
+  grpc_rb_channel_polling_thread_start();
   atexit(grpc_rb_shutdown);
 }
 
-void Init_grpc_c() {
-  if (!grpc_rb_load_core()) {
-    rb_raise(rb_eLoadError, "Couldn't find or load gRPC's dynamic C core");
-    return;
-  }
-
+void grpc_ruby_once_init() {
   /* ruby_vm_at_exit doesn't seem to be working. It would crash once every
    * blue moon, and some users are getting it repeatedly. See the discussions
    *  - https://github.com/grpc/grpc/pull/5337
@@ -312,13 +308,19 @@ void Init_grpc_c() {
    * then loaded again by another VM within the same process, we need to
    * schedule our initialization and destruction only once.
    */
-  gpr_once_init(&g_once_init, grpc_ruby_once_init);
+  gpr_once_init(&g_once_init, grpc_ruby_once_init_internal);
+}
+
+void Init_grpc_c() {
+  if (!grpc_rb_load_core()) {
+    rb_raise(rb_eLoadError, "Couldn't find or load gRPC's dynamic C core");
+    return;
+  }
 
   grpc_rb_mGRPC = rb_define_module("GRPC");
   grpc_rb_mGrpcCore = rb_define_module_under(grpc_rb_mGRPC, "Core");
-  grpc_rb_sNewServerRpc =
-      rb_struct_define("NewServerRpc", "method", "host",
-                       "deadline", "metadata", "call", NULL);
+  grpc_rb_sNewServerRpc = rb_struct_define(
+      "NewServerRpc", "method", "host", "deadline", "metadata", "call", NULL);
   grpc_rb_sStatus =
       rb_struct_define("Status", "code", "details", "metadata", NULL);
   sym_code = ID2SYM(rb_intern("code"));
diff --git a/src/ruby/ext/grpc/rb_grpc.h b/src/ruby/ext/grpc/rb_grpc.h
index 6ea6cbd0b6c98d2655869260e3a01a5762cabb76..8538a74211bfce08768f4a750a1ac241da8a0f0f 100644
--- a/src/ruby/ext/grpc/rb_grpc.h
+++ b/src/ruby/ext/grpc/rb_grpc.h
@@ -34,8 +34,8 @@
 #ifndef GRPC_RB_H_
 #define GRPC_RB_H_
 
-#include <sys/time.h>
 #include <ruby/ruby.h>
+#include <sys/time.h>
 
 #include <grpc/support/time.h>
 
@@ -68,7 +68,7 @@ extern VALUE sym_metadata;
 
 /* GRPC_RB_MEMSIZE_UNAVAILABLE is used in rb_data_type_t to indicate that the
  * number of bytes used by the wrapped struct is not available. */
-#define GRPC_RB_MEMSIZE_UNAVAILABLE (size_t (*)(const void*))(NULL)
+#define GRPC_RB_MEMSIZE_UNAVAILABLE (size_t(*)(const void*))(NULL)
 
 /* A ruby object alloc func that fails by raising an exception. */
 VALUE grpc_rb_cannot_alloc(VALUE cls);
@@ -82,4 +82,6 @@ VALUE grpc_rb_cannot_init_copy(VALUE copy, VALUE self);
 /* grpc_rb_time_timeval creates a gpr_timespec from a ruby time object. */
 gpr_timespec grpc_rb_time_timeval(VALUE time, int interval);
 
+void grpc_ruby_once_init();
+
 #endif /* GRPC_RB_H_ */
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.c b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
index 063f92114c0ecd30a484d318408fa31ca9577db3..1c68b2dc7cce3572ad666776981ec502e9e97c54 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.c
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
@@ -108,9 +108,9 @@ grpc_channel_create_call_type grpc_channel_create_call_import;
 grpc_channel_ping_type grpc_channel_ping_import;
 grpc_channel_register_call_type grpc_channel_register_call_import;
 grpc_channel_create_registered_call_type grpc_channel_create_registered_call_import;
+grpc_call_arena_alloc_type grpc_call_arena_alloc_import;
 grpc_call_start_batch_type grpc_call_start_batch_import;
 grpc_call_get_peer_type grpc_call_get_peer_import;
-grpc_call_set_load_reporting_cost_context_type grpc_call_set_load_reporting_cost_context_import;
 grpc_census_call_set_context_type grpc_census_call_set_context_import;
 grpc_census_call_get_context_type grpc_census_call_get_context_import;
 grpc_channel_get_target_type grpc_channel_get_target_import;
@@ -120,7 +120,8 @@ grpc_lame_client_channel_create_type grpc_lame_client_channel_create_import;
 grpc_channel_destroy_type grpc_channel_destroy_import;
 grpc_call_cancel_type grpc_call_cancel_import;
 grpc_call_cancel_with_status_type grpc_call_cancel_with_status_import;
-grpc_call_destroy_type grpc_call_destroy_import;
+grpc_call_ref_type grpc_call_ref_import;
+grpc_call_unref_type grpc_call_unref_import;
 grpc_server_request_call_type grpc_server_request_call_import;
 grpc_server_register_method_type grpc_server_register_method_import;
 grpc_server_request_registered_call_type grpc_server_request_registered_call_import;
@@ -405,9 +406,9 @@ void grpc_rb_load_imports(HMODULE library) {
   grpc_channel_ping_import = (grpc_channel_ping_type) GetProcAddress(library, "grpc_channel_ping");
   grpc_channel_register_call_import = (grpc_channel_register_call_type) GetProcAddress(library, "grpc_channel_register_call");
   grpc_channel_create_registered_call_import = (grpc_channel_create_registered_call_type) GetProcAddress(library, "grpc_channel_create_registered_call");
+  grpc_call_arena_alloc_import = (grpc_call_arena_alloc_type) GetProcAddress(library, "grpc_call_arena_alloc");
   grpc_call_start_batch_import = (grpc_call_start_batch_type) GetProcAddress(library, "grpc_call_start_batch");
   grpc_call_get_peer_import = (grpc_call_get_peer_type) GetProcAddress(library, "grpc_call_get_peer");
-  grpc_call_set_load_reporting_cost_context_import = (grpc_call_set_load_reporting_cost_context_type) GetProcAddress(library, "grpc_call_set_load_reporting_cost_context");
   grpc_census_call_set_context_import = (grpc_census_call_set_context_type) GetProcAddress(library, "grpc_census_call_set_context");
   grpc_census_call_get_context_import = (grpc_census_call_get_context_type) GetProcAddress(library, "grpc_census_call_get_context");
   grpc_channel_get_target_import = (grpc_channel_get_target_type) GetProcAddress(library, "grpc_channel_get_target");
@@ -417,7 +418,8 @@ void grpc_rb_load_imports(HMODULE library) {
   grpc_channel_destroy_import = (grpc_channel_destroy_type) GetProcAddress(library, "grpc_channel_destroy");
   grpc_call_cancel_import = (grpc_call_cancel_type) GetProcAddress(library, "grpc_call_cancel");
   grpc_call_cancel_with_status_import = (grpc_call_cancel_with_status_type) GetProcAddress(library, "grpc_call_cancel_with_status");
-  grpc_call_destroy_import = (grpc_call_destroy_type) GetProcAddress(library, "grpc_call_destroy");
+  grpc_call_ref_import = (grpc_call_ref_type) GetProcAddress(library, "grpc_call_ref");
+  grpc_call_unref_import = (grpc_call_unref_type) GetProcAddress(library, "grpc_call_unref");
   grpc_server_request_call_import = (grpc_server_request_call_type) GetProcAddress(library, "grpc_server_request_call");
   grpc_server_register_method_import = (grpc_server_register_method_type) GetProcAddress(library, "grpc_server_register_method");
   grpc_server_request_registered_call_import = (grpc_server_request_registered_call_type) GetProcAddress(library, "grpc_server_request_registered_call");
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.h b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
index e036ff7bd632086e2897a66bef9204eb3b695fda..c33fdd210e5979905c7c1212d1f73d34be079a1a 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.h
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
@@ -275,15 +275,15 @@ extern grpc_channel_register_call_type grpc_channel_register_call_import;
 typedef grpc_call *(*grpc_channel_create_registered_call_type)(grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask, grpc_completion_queue *completion_queue, void *registered_call_handle, gpr_timespec deadline, void *reserved);
 extern grpc_channel_create_registered_call_type grpc_channel_create_registered_call_import;
 #define grpc_channel_create_registered_call grpc_channel_create_registered_call_import
+typedef void *(*grpc_call_arena_alloc_type)(grpc_call *call, size_t size);
+extern grpc_call_arena_alloc_type grpc_call_arena_alloc_import;
+#define grpc_call_arena_alloc grpc_call_arena_alloc_import
 typedef grpc_call_error(*grpc_call_start_batch_type)(grpc_call *call, const grpc_op *ops, size_t nops, void *tag, void *reserved);
 extern grpc_call_start_batch_type grpc_call_start_batch_import;
 #define grpc_call_start_batch grpc_call_start_batch_import
 typedef char *(*grpc_call_get_peer_type)(grpc_call *call);
 extern grpc_call_get_peer_type grpc_call_get_peer_import;
 #define grpc_call_get_peer grpc_call_get_peer_import
-typedef void(*grpc_call_set_load_reporting_cost_context_type)(grpc_call *call, struct grpc_load_reporting_cost_context *context);
-extern grpc_call_set_load_reporting_cost_context_type grpc_call_set_load_reporting_cost_context_import;
-#define grpc_call_set_load_reporting_cost_context grpc_call_set_load_reporting_cost_context_import
 typedef void(*grpc_census_call_set_context_type)(grpc_call *call, struct census_context *context);
 extern grpc_census_call_set_context_type grpc_census_call_set_context_import;
 #define grpc_census_call_set_context grpc_census_call_set_context_import
@@ -311,9 +311,12 @@ extern grpc_call_cancel_type grpc_call_cancel_import;
 typedef grpc_call_error(*grpc_call_cancel_with_status_type)(grpc_call *call, grpc_status_code status, const char *description, void *reserved);
 extern grpc_call_cancel_with_status_type grpc_call_cancel_with_status_import;
 #define grpc_call_cancel_with_status grpc_call_cancel_with_status_import
-typedef void(*grpc_call_destroy_type)(grpc_call *call);
-extern grpc_call_destroy_type grpc_call_destroy_import;
-#define grpc_call_destroy grpc_call_destroy_import
+typedef void(*grpc_call_ref_type)(grpc_call *call);
+extern grpc_call_ref_type grpc_call_ref_import;
+#define grpc_call_ref grpc_call_ref_import
+typedef void(*grpc_call_unref_type)(grpc_call *call);
+extern grpc_call_unref_type grpc_call_unref_import;
+#define grpc_call_unref grpc_call_unref_import
 typedef grpc_call_error(*grpc_server_request_call_type)(grpc_server *server, grpc_call **call, grpc_call_details *details, grpc_metadata_array *request_metadata, grpc_completion_queue *cq_bound_to_call, grpc_completion_queue *cq_for_notification, void *tag_new);
 extern grpc_server_request_call_type grpc_server_request_call_import;
 #define grpc_server_request_call grpc_server_request_call_import
diff --git a/src/ruby/ext/grpc/rb_server.c b/src/ruby/ext/grpc/rb_server.c
index ef57d5b07ed40b772c23f9eb63cfbb847764d4e8..d7408f683dbf47ef641929a56f9dd8b2caa05104 100644
--- a/src/ruby/ext/grpc/rb_server.c
+++ b/src/ruby/ext/grpc/rb_server.c
@@ -132,11 +132,15 @@ static VALUE grpc_rb_server_alloc(VALUE cls) {
 
   Initializes server instances. */
 static VALUE grpc_rb_server_init(VALUE self, VALUE channel_args) {
-  grpc_completion_queue *cq = grpc_completion_queue_create_for_pluck(NULL);
+  grpc_completion_queue *cq = NULL;
   grpc_rb_server *wrapper = NULL;
   grpc_server *srv = NULL;
   grpc_channel_args args;
   MEMZERO(&args, grpc_channel_args, 1);
+
+  grpc_ruby_once_init();
+
+  cq = grpc_completion_queue_create_for_pluck(NULL);
   TypedData_Get_Struct(self, grpc_rb_server, &grpc_rb_server_data_type,
                        wrapper);
   grpc_rb_hash_convert_to_channel_args(channel_args, &args);
diff --git a/templates/CMakeLists.txt.template b/templates/CMakeLists.txt.template
index c647ea57072111d72d12166130d47ace88048bee..88e518f13218b58083c2a2e82877b77698a5d486 100644
--- a/templates/CMakeLists.txt.template
+++ b/templates/CMakeLists.txt.template
@@ -314,8 +314,10 @@
     set(CMAKE_CXX_FLAGS "<%text>${CMAKE_CXX_FLAGS}</%text> -std=c++11")
   endif()
 
-  if(UNIX)
-    set(_gRPC_ALLTARGETS_LIBRARIES dl rt m pthread)
+  if(_gRPC_PLATFORM_MAC)
+    set(_gRPC_ALLTARGETS_LIBRARIES <%text>${CMAKE_DL_LIBS}</%text> m pthread)
+  elseif(UNIX)
+    set(_gRPC_ALLTARGETS_LIBRARIES <%text>${CMAKE_DL_LIBS}</%text> rt m pthread)
   endif()
 
   if(WIN32 AND MSVC)
diff --git a/templates/binding.gyp.template b/templates/binding.gyp.template
index 55a91c5b93d57e9e1fcea9b609db27da46840fb8..a2e8c588920515df650ce246eebd96f91e880404 100644
--- a/templates/binding.gyp.template
+++ b/templates/binding.gyp.template
@@ -205,7 +205,7 @@
           % endfor
         ]
       }],
-      ['OS == "win"', {
+      ['OS == "win" and runtime!="electron"', {
         'targets': [
           {
             # IMPORTANT WINDOWS BUILD INFORMATION
@@ -216,6 +216,8 @@
             # when including the Node headers. The remedy for this is to remove
             # the OpenSSL headers, from the downloaded Node development package,
             # which is typically located in `.node-gyp` in your home directory.
+            #
+            # This is not true of Electron, which does not have OpenSSL headers.
             'target_name': 'WINDOWS_BUILD_WARNING',
             'rules': [
               {
diff --git a/templates/config.m4.template b/templates/config.m4.template
index f5f1d23088dadeaedff737fc148349a366a6d484..13ff7389e6857c21a50f22172917faa99866f479 100644
--- a/templates/config.m4.template
+++ b/templates/config.m4.template
@@ -10,6 +10,8 @@
     PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/include)
     PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/src/php/ext/grpc)
     PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/boringssl/include)
+    PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/cares)
+    PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/cares/cares)
 
     LIBS="-lpthread $LIBS"
 
@@ -20,8 +22,11 @@
     PHP_ADD_LIBRARY(dl)
 
     case $host in
-      *darwin*) ;;
+      *darwin*)
+        PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/cares/config_darwin)
+        ;;
       *)
+        PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/cares/config_linux)
         PHP_ADD_LIBRARY(rt,,GRPC_SHARED_LIBADD)
         PHP_ADD_LIBRARY(rt)
         ;;
diff --git a/templates/src/python/grpcio/grpc/_grpcio_metadata.py.template b/templates/src/python/grpcio/grpc/_grpcio_metadata.py.template
new file mode 100644
index 0000000000000000000000000000000000000000..3d325b4d3d8e7e71664bdc258b4c015c2dcab6d4
--- /dev/null
+++ b/templates/src/python/grpcio/grpc/_grpcio_metadata.py.template
@@ -0,0 +1,34 @@
+%YAML 1.2
+--- |
+  # Copyright 2017, Google Inc.
+  # All rights reserved.
+  #
+  # Redistribution and use in source and binary forms, with or without
+  # modification, are permitted provided that the following conditions are
+  # met:
+  #
+  #     * Redistributions of source code must retain the above copyright
+  # notice, this list of conditions and the following disclaimer.
+  #     * Redistributions in binary form must reproduce the above
+  # copyright notice, this list of conditions and the following disclaimer
+  # in the documentation and/or other materials provided with the
+  # distribution.
+  #     * Neither the name of Google Inc. nor the names of its
+  # contributors may be used to endorse or promote products derived from
+  # this software without specific prior written permission.
+  #
+  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+  # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio/grpc/_grpcio_metadata.py.template`!!!
+
+  __version__ = """${settings.python_version.pep440()}"""
diff --git a/test/core/bad_client/tests/head_of_line_blocking.c b/test/core/bad_client/tests/head_of_line_blocking.c
index 64cb79d82f2dfd32bac273ab00df0f97a438d28a..b0d788bf2287a977c4955b17c5dac390458675d7 100644
--- a/test/core/bad_client/tests/head_of_line_blocking.c
+++ b/test/core/bad_client/tests/head_of_line_blocking.c
@@ -103,7 +103,7 @@ static void verifier(grpc_server *server, grpc_completion_queue *cq,
   GPR_ASSERT(payload != NULL);
 
   grpc_metadata_array_destroy(&request_metadata_recv);
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
   grpc_byte_buffer_destroy(payload);
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/bad_client/tests/large_metadata.c b/test/core/bad_client/tests/large_metadata.c
index f672776a9fb1b62bfb95679f798ec0ff01318e00..d7a3ce9461c98f39f0ae6e3d53176989483b903b 100644
--- a/test/core/bad_client/tests/large_metadata.c
+++ b/test/core/bad_client/tests/large_metadata.c
@@ -131,7 +131,7 @@ static void server_verifier(grpc_server *server, grpc_completion_queue *cq,
 
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
   cq_verifier_destroy(cqv);
 }
 
@@ -177,7 +177,7 @@ static void server_verifier_sends_too_much_metadata(grpc_server *server,
   grpc_slice_unref(meta.value);
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
   cq_verifier_destroy(cqv);
 }
 
diff --git a/test/core/bad_client/tests/server_registered_method.c b/test/core/bad_client/tests/server_registered_method.c
index e174af5931ac6ebd069c43ba5a0dd0f031cf2cfb..c5af0bae767333bf0a32b63b16c162b652164fee 100644
--- a/test/core/bad_client/tests/server_registered_method.c
+++ b/test/core/bad_client/tests/server_registered_method.c
@@ -76,7 +76,7 @@ static void verifier_succeeds(grpc_server *server, grpc_completion_queue *cq,
   GPR_ASSERT(payload != NULL);
 
   grpc_metadata_array_destroy(&request_metadata_recv);
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
   grpc_byte_buffer_destroy(payload);
   cq_verifier_destroy(cqv);
 }
@@ -102,7 +102,7 @@ static void verifier_fails(grpc_server *server, grpc_completion_queue *cq,
   GPR_ASSERT(payload == NULL);
 
   grpc_metadata_array_destroy(&request_metadata_recv);
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
   cq_verifier_destroy(cqv);
 }
 
diff --git a/test/core/bad_client/tests/simple_request.c b/test/core/bad_client/tests/simple_request.c
index 608b849d4154b2a82bc146833acfc0c55a1eb971..fb342f08815f2fa4c185577eb3becc4b2ef87eaf 100644
--- a/test/core/bad_client/tests/simple_request.c
+++ b/test/core/bad_client/tests/simple_request.c
@@ -122,7 +122,7 @@ static void verifier(grpc_server *server, grpc_completion_queue *cq,
 
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
   cq_verifier_destroy(cqv);
 }
 
diff --git a/test/core/bad_ssl/bad_ssl_test.c b/test/core/bad_ssl/bad_ssl_test.c
index b961ffacd78ab8854dff1070ca93466b3a4a9dea..ba5b52aa54d0e4d7775d5085bb31b8fd5da824fb 100644
--- a/test/core/bad_ssl/bad_ssl_test.c
+++ b/test/core/bad_ssl/bad_ssl_test.c
@@ -115,7 +115,7 @@ static void run_test(const char *target, size_t nops) {
 
   GPR_ASSERT(status != GRPC_STATUS_OK);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
   grpc_slice_unref(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
   grpc_metadata_array_destroy(&trailing_metadata_recv);
diff --git a/test/core/client_channel/lb_policies_test.c b/test/core/client_channel/lb_policies_test.c
index 3c8e6dd5a2668970e7a2ce99effad47a29cb3d84..4492e6f594bd9abdb0449f5e9027b0763e8bd029 100644
--- a/test/core/client_channel/lb_policies_test.c
+++ b/test/core/client_channel/lb_policies_test.c
@@ -394,7 +394,7 @@ static request_sequences perform_request(servers_fixture *f,
                                          "foo.test.google.fr"));
       GPR_ASSERT(was_cancelled == 1);
 
-      grpc_call_destroy(f->server_calls[s_idx]);
+      grpc_call_unref(f->server_calls[s_idx]);
 
       /* ask for the next request on this server */
       GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
@@ -420,7 +420,7 @@ static request_sequences perform_request(servers_fixture *f,
 
     cq_verifier_destroy(cqv);
 
-    grpc_call_destroy(c);
+    grpc_call_unref(c);
 
     for (i = 0; i < f->num_servers; i++) {
       grpc_call_details_destroy(&rdata->call_details[i]);
@@ -616,7 +616,7 @@ static void test_pending_calls(size_t concurrent_calls) {
   /* destroy the calls after the channel so that they are still around for the
    * LB's shutdown func to process */
   for (i = 0; i < concurrent_calls; i++) {
-    grpc_call_destroy(calls[i]);
+    grpc_call_unref(calls[i]);
   }
   gpr_free(calls);
   teardown_servers(f);
diff --git a/test/core/client_channel/parse_address_test.c b/test/core/client_channel/parse_address_test.c
index 629cdb001f9d393ee6f79854dba65a02221daee7..802e41e5dee86f36d9b3fd6d213270c224f0b5fa 100644
--- a/test/core/client_channel/parse_address_test.c
+++ b/test/core/client_channel/parse_address_test.c
@@ -47,12 +47,12 @@
 
 #ifdef GRPC_HAVE_UNIX_SOCKET
 
-static void test_parse_unix(const char *uri_text, const char *pathname) {
+static void test_grpc_parse_unix(const char *uri_text, const char *pathname) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_uri *uri = grpc_uri_parse(&exec_ctx, uri_text, 0);
   grpc_resolved_address addr;
 
-  GPR_ASSERT(1 == parse_unix(uri, &addr));
+  GPR_ASSERT(1 == grpc_parse_unix(uri, &addr));
   struct sockaddr_un *addr_un = (struct sockaddr_un *)addr.addr;
   GPR_ASSERT(AF_UNIX == addr_un->sun_family);
   GPR_ASSERT(0 == strcmp(addr_un->sun_path, pathname));
@@ -63,18 +63,18 @@ static void test_parse_unix(const char *uri_text, const char *pathname) {
 
 #else /* GRPC_HAVE_UNIX_SOCKET */
 
-static void test_parse_unix(const char *uri_text, const char *pathname) {}
+static void test_grpc_parse_unix(const char *uri_text, const char *pathname) {}
 
 #endif /* GRPC_HAVE_UNIX_SOCKET */
 
-static void test_parse_ipv4(const char *uri_text, const char *host,
-                            unsigned short port) {
+static void test_grpc_parse_ipv4(const char *uri_text, const char *host,
+                                 unsigned short port) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_uri *uri = grpc_uri_parse(&exec_ctx, uri_text, 0);
   grpc_resolved_address addr;
   char ntop_buf[INET_ADDRSTRLEN];
 
-  GPR_ASSERT(1 == parse_ipv4(uri, &addr));
+  GPR_ASSERT(1 == grpc_parse_ipv4(uri, &addr));
   struct sockaddr_in *addr_in = (struct sockaddr_in *)addr.addr;
   GPR_ASSERT(AF_INET == addr_in->sin_family);
   GPR_ASSERT(NULL != grpc_inet_ntop(AF_INET, &addr_in->sin_addr, ntop_buf,
@@ -86,14 +86,14 @@ static void test_parse_ipv4(const char *uri_text, const char *host,
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
-static void test_parse_ipv6(const char *uri_text, const char *host,
-                            unsigned short port, uint32_t scope_id) {
+static void test_grpc_parse_ipv6(const char *uri_text, const char *host,
+                                 unsigned short port, uint32_t scope_id) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_uri *uri = grpc_uri_parse(&exec_ctx, uri_text, 0);
   grpc_resolved_address addr;
   char ntop_buf[INET6_ADDRSTRLEN];
 
-  GPR_ASSERT(1 == parse_ipv6(uri, &addr));
+  GPR_ASSERT(1 == grpc_parse_ipv6(uri, &addr));
   struct sockaddr_in6 *addr_in6 = (struct sockaddr_in6 *)addr.addr;
   GPR_ASSERT(AF_INET6 == addr_in6->sin6_family);
   GPR_ASSERT(NULL != grpc_inet_ntop(AF_INET6, &addr_in6->sin6_addr, ntop_buf,
@@ -109,8 +109,8 @@ static void test_parse_ipv6(const char *uri_text, const char *host,
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
 
-  test_parse_unix("unix:/path/name", "/path/name");
-  test_parse_ipv4("ipv4:192.0.2.1:12345", "192.0.2.1", 12345);
-  test_parse_ipv6("ipv6:[2001:db8::1]:12345", "2001:db8::1", 12345, 0);
-  test_parse_ipv6("ipv6:[2001:db8::1%252]:12345", "2001:db8::1", 12345, 2);
+  test_grpc_parse_unix("unix:/path/name", "/path/name");
+  test_grpc_parse_ipv4("ipv4:192.0.2.1:12345", "192.0.2.1", 12345);
+  test_grpc_parse_ipv6("ipv6:[2001:db8::1]:12345", "2001:db8::1", 12345, 0);
+  test_grpc_parse_ipv6("ipv6:[2001:db8::1%252]:12345", "2001:db8::1", 12345, 2);
 }
diff --git a/test/core/client_channel/resolvers/BUILD b/test/core/client_channel/resolvers/BUILD
index af37072e3a4288d1a64c5e8c39ee2139b53d40ff..e8361cdef63d2299dc99f08b74b9cf1842510d05 100644
--- a/test/core/client_channel/resolvers/BUILD
+++ b/test/core/client_channel/resolvers/BUILD
@@ -32,20 +32,48 @@ licenses(["notice"])  # 3-clause BSD
 cc_test(
     name = "dns_resolver_connectivity_test",
     srcs = ["dns_resolver_connectivity_test.c"],
-    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
-    copts = ['-std=c99']
+    copts = ["-std=c99"],
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+    ],
 )
 
 cc_test(
     name = "dns_resolver_test",
     srcs = ["dns_resolver_test.c"],
-    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
-    copts = ['-std=c99']
+    copts = ["-std=c99"],
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+    ],
 )
 
 cc_test(
     name = "sockaddr_resolver_test",
     srcs = ["sockaddr_resolver_test.c"],
-    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
-    copts = ['-std=c99']
+    copts = ["-std=c99"],
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+    ],
+)
+
+cc_test(
+    name = "fake_resolver_test",
+    srcs = ["fake_resolver_test.c"],
+    copts = ["-std=c99"],
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//test/core/end2end:fake_resolver",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+    ],
 )
diff --git a/test/core/client_channel/resolvers/fake_resolver_test.c b/test/core/client_channel/resolvers/fake_resolver_test.c
new file mode 100644
index 0000000000000000000000000000000000000000..861918fbd65c3d8d5f102081ecc73c673c2d1e41
--- /dev/null
+++ b/test/core/client_channel/resolvers/fake_resolver_test.c
@@ -0,0 +1,187 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/security/credentials/fake/fake_credentials.h"
+
+#include "test/core/end2end/fake_resolver.h"
+#include "test/core/util/test_config.h"
+
+static grpc_resolver *build_fake_resolver(
+    grpc_exec_ctx *exec_ctx, grpc_combiner *combiner,
+    grpc_fake_resolver_response_generator *response_generator) {
+  grpc_resolver_factory *factory = grpc_resolver_factory_lookup("test");
+  grpc_arg generator_arg =
+      grpc_fake_resolver_response_generator_arg(response_generator);
+  grpc_resolver_args args;
+  memset(&args, 0, sizeof(args));
+  grpc_channel_args channel_args = {1, &generator_arg};
+  args.args = &channel_args;
+  args.combiner = combiner;
+  grpc_resolver *resolver =
+      grpc_resolver_factory_create_resolver(exec_ctx, factory, &args);
+  grpc_resolver_factory_unref(factory);
+  return resolver;
+}
+
+typedef struct on_resolution_arg {
+  grpc_channel_args *resolver_result;
+  grpc_channel_args *expected_resolver_result;
+  bool was_called;
+} on_resolution_arg;
+
+void on_resolution_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
+  on_resolution_arg *res = arg;
+  res->was_called = true;
+  // We only check the addresses channel arg because that's the only one
+  // explicitly set by the test via
+  // grpc_fake_resolver_response_generator_set_response.
+  const grpc_lb_addresses *actual_lb_addresses =
+      grpc_lb_addresses_find_channel_arg(res->resolver_result);
+  const grpc_lb_addresses *expected_lb_addresses =
+      grpc_lb_addresses_find_channel_arg(res->expected_resolver_result);
+  GPR_ASSERT(
+      grpc_lb_addresses_cmp(actual_lb_addresses, expected_lb_addresses) == 0);
+  grpc_channel_args_destroy(exec_ctx, res->resolver_result);
+  grpc_channel_args_destroy(exec_ctx, res->expected_resolver_result);
+}
+
+static void test_fake_resolver() {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_combiner *combiner = grpc_combiner_create(NULL);
+  // Create resolver.
+  grpc_fake_resolver_response_generator *response_generator =
+      grpc_fake_resolver_response_generator_create();
+  grpc_resolver *resolver =
+      build_fake_resolver(&exec_ctx, combiner, response_generator);
+  GPR_ASSERT(resolver != NULL);
+
+  // Setup expectations.
+  grpc_uri *uris[] = {grpc_uri_parse(&exec_ctx, "ipv4:10.2.1.1:1234", true),
+                      grpc_uri_parse(&exec_ctx, "ipv4:127.0.0.1:4321", true)};
+  char *balancer_names[] = {"name1", "name2"};
+  const bool is_balancer[] = {true, false};
+  grpc_lb_addresses *addresses = grpc_lb_addresses_create(3, NULL);
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(uris); ++i) {
+    grpc_lb_addresses_set_address_from_uri(
+        addresses, i, uris[i], is_balancer[i], balancer_names[i], NULL);
+    grpc_uri_destroy(uris[i]);
+  }
+  const grpc_arg addresses_arg =
+      grpc_lb_addresses_create_channel_arg(addresses);
+  grpc_channel_args *results =
+      grpc_channel_args_copy_and_add(NULL, &addresses_arg, 1);
+  grpc_lb_addresses_destroy(&exec_ctx, addresses);
+  on_resolution_arg on_res_arg;
+  memset(&on_res_arg, 0, sizeof(on_res_arg));
+  on_res_arg.expected_resolver_result = results;
+  grpc_closure *on_resolution = grpc_closure_create(
+      on_resolution_cb, &on_res_arg, grpc_combiner_scheduler(combiner, false));
+
+  // Set resolver results and trigger first resolution. on_resolution_cb
+  // performs the checks.
+  grpc_fake_resolver_response_generator_set_response(
+      &exec_ctx, response_generator, results);
+  grpc_resolver_next_locked(&exec_ctx, resolver, &on_res_arg.resolver_result,
+                            on_resolution);
+  grpc_exec_ctx_flush(&exec_ctx);
+  GPR_ASSERT(on_res_arg.was_called);
+
+  // Setup update.
+  grpc_uri *uris_update[] = {
+      grpc_uri_parse(&exec_ctx, "ipv4:192.168.1.0:31416", true)};
+  char *balancer_names_update[] = {"name3"};
+  const bool is_balancer_update[] = {false};
+  grpc_lb_addresses *addresses_update = grpc_lb_addresses_create(1, NULL);
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(uris_update); ++i) {
+    grpc_lb_addresses_set_address_from_uri(addresses_update, i, uris_update[i],
+                                           is_balancer_update[i],
+                                           balancer_names_update[i], NULL);
+    grpc_uri_destroy(uris_update[i]);
+  }
+
+  grpc_arg addresses_update_arg =
+      grpc_lb_addresses_create_channel_arg(addresses_update);
+  grpc_channel_args *results_update =
+      grpc_channel_args_copy_and_add(NULL, &addresses_update_arg, 1);
+  grpc_lb_addresses_destroy(&exec_ctx, addresses_update);
+
+  // Setup expectations for the update.
+  on_resolution_arg on_res_arg_update;
+  memset(&on_res_arg_update, 0, sizeof(on_res_arg_update));
+  on_res_arg_update.expected_resolver_result = results_update;
+  on_resolution = grpc_closure_create(on_resolution_cb, &on_res_arg_update,
+                                      grpc_combiner_scheduler(combiner, false));
+
+  // Set updated resolver results and trigger a second resolution.
+  grpc_fake_resolver_response_generator_set_response(
+      &exec_ctx, response_generator, results_update);
+  grpc_resolver_next_locked(&exec_ctx, resolver,
+                            &on_res_arg_update.resolver_result, on_resolution);
+  grpc_exec_ctx_flush(&exec_ctx);
+  GPR_ASSERT(on_res_arg.was_called);
+
+  // Requesting a new resolution without re-senting the response shouldn't
+  // trigger the resolution callback.
+  memset(&on_res_arg, 0, sizeof(on_res_arg));
+  grpc_resolver_next_locked(&exec_ctx, resolver, &on_res_arg.resolver_result,
+                            on_resolution);
+  grpc_exec_ctx_flush(&exec_ctx);
+  GPR_ASSERT(!on_res_arg.was_called);
+
+  GRPC_COMBINER_UNREF(&exec_ctx, combiner, "test_fake_resolver");
+  GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "test_fake_resolver");
+  grpc_exec_ctx_finish(&exec_ctx);
+  grpc_fake_resolver_response_generator_unref(response_generator);
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  grpc_fake_resolver_init();  // Registers the "test" scheme.
+  grpc_init();
+
+  test_fake_resolver();
+
+  grpc_shutdown();
+  return 0;
+}
diff --git a/test/core/end2end/BUILD b/test/core/end2end/BUILD
index 0cef7aa01df35d29ee54e7aefcdf91b153fd1a65..ffea1cc4e8ebcfc9f0a71b481b769021e4150b04 100644
--- a/test/core/end2end/BUILD
+++ b/test/core/end2end/BUILD
@@ -32,49 +32,66 @@ licenses(["notice"])  # 3-clause BSD
 load(":generate_tests.bzl", "grpc_end2end_tests")
 
 cc_library(
-  name = 'cq_verifier',
-  srcs = ['cq_verifier.c'],
-  hdrs = ['cq_verifier.h'],
-  deps = ['//:gpr', '//:grpc', '//test/core/util:grpc_test_util'],
-  copts = ['-std=c99'],
-  visibility = ["//test:__subpackages__"],
+    name = "cq_verifier",
+    srcs = ["cq_verifier.c"],
+    hdrs = ["cq_verifier.h"],
+    copts = ["-std=c99"],
+    visibility = ["//test:__subpackages__"],
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//test/core/util:grpc_test_util",
+    ],
 )
 
 cc_library(
-  name = 'ssl_test_data',
-  visibility = ["//test:__subpackages__"],
-  hdrs = ['data/ssl_test_data.h'],
-  copts = ['-std=c99'],
-  srcs = [
-    "data/client_certs.c",
-    "data/server1_cert.c",
-    "data/server1_key.c",
-    "data/test_root_cert.c",
-  ]
+    name = "ssl_test_data",
+    srcs = [
+        "data/client_certs.c",
+        "data/server1_cert.c",
+        "data/server1_key.c",
+        "data/test_root_cert.c",
+    ],
+    hdrs = ["data/ssl_test_data.h"],
+    copts = ["-std=c99"],
+    visibility = ["//test:__subpackages__"],
 )
 
 cc_library(
-  name = 'fake_resolver',
-  hdrs = ['fake_resolver.h'],
-  srcs = ['fake_resolver.c'],
-  copts = ['-std=c99'],
-  deps = ['//:gpr', '//:grpc', '//test/core/util:grpc_test_util']
+    name = "fake_resolver",
+    srcs = ["fake_resolver.c"],
+    hdrs = ["fake_resolver.h"],
+    copts = ["-std=c99"],
+    visibility = ["//test:__subpackages__"],
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//test/core/util:grpc_test_util",
+    ],
 )
 
 cc_library(
-  name = 'http_proxy',
-  hdrs = ['fixtures/http_proxy_fixture.h'],
-  srcs = ['fixtures/http_proxy_fixture.c'],
-  copts = ['-std=c99'],
-  deps = ['//:gpr', '//:grpc', '//test/core/util:grpc_test_util']
+    name = "http_proxy",
+    srcs = ["fixtures/http_proxy_fixture.c"],
+    hdrs = ["fixtures/http_proxy_fixture.h"],
+    copts = ["-std=c99"],
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//test/core/util:grpc_test_util",
+    ],
 )
 
 cc_library(
-  name = 'proxy',
-  hdrs = ['fixtures/proxy.h'],
-  srcs = ['fixtures/proxy.c'],
-  copts = ['-std=c99'],
-  deps = ['//:gpr', '//:grpc', '//test/core/util:grpc_test_util']
+    name = "proxy",
+    srcs = ["fixtures/proxy.c"],
+    hdrs = ["fixtures/proxy.h"],
+    copts = ["-std=c99"],
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//test/core/util:grpc_test_util",
+    ],
 )
 
 grpc_end2end_tests()
diff --git a/test/core/end2end/bad_server_response_test.c b/test/core/end2end/bad_server_response_test.c
index 1537caf94341317625f76fad9cd8d22d84ac987a..fe7e674d17c7a3c66ce588e65a45449dae42cf0b 100644
--- a/test/core/end2end/bad_server_response_test.c
+++ b/test/core/end2end/bad_server_response_test.c
@@ -236,7 +236,7 @@ static void cleanup_rpc(grpc_exec_ctx *exec_ctx) {
   grpc_event ev;
   grpc_slice_buffer_destroy_internal(exec_ctx, &state.temp_incoming_buffer);
   grpc_slice_buffer_destroy_internal(exec_ctx, &state.outgoing_buffer);
-  grpc_call_destroy(state.call);
+  grpc_call_unref(state.call);
   grpc_completion_queue_shutdown(state.cq);
   do {
     ev = grpc_completion_queue_next(state.cq, n_sec_deadline(1), NULL);
diff --git a/test/core/end2end/connection_refused_test.c b/test/core/end2end/connection_refused_test.c
index 7fecadbb86101498435fdf40fbe8d985c51ed119..db7a6c0a8ec1e7a7a0416550f27e7106b45927c4 100644
--- a/test/core/end2end/connection_refused_test.c
+++ b/test/core/end2end/connection_refused_test.c
@@ -138,7 +138,7 @@ static void run_test(bool wait_for_ready, bool use_service_config) {
           .type != GRPC_QUEUE_SHUTDOWN)
     ;
   grpc_completion_queue_destroy(cq);
-  grpc_call_destroy(call);
+  grpc_call_unref(call);
   grpc_channel_destroy(chan);
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/dualstack_socket_test.c b/test/core/end2end/dualstack_socket_test.c
index c61ea6d2603b39dd7653537904700f145807e980..caf782869197ee27a1b603704ce2440b652487c3 100644
--- a/test/core/end2end/dualstack_socket_test.c
+++ b/test/core/end2end/dualstack_socket_test.c
@@ -243,7 +243,7 @@ void test_connect(const char *server_host, const char *client_host, int port,
                grpc_slice_str_cmp(call_details.host, "foo.test.google.fr"));
     GPR_ASSERT(was_cancelled == 1);
 
-    grpc_call_destroy(s);
+    grpc_call_unref(s);
   } else {
     /* Check for a failed connection. */
     CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
@@ -252,7 +252,7 @@ void test_connect(const char *server_host, const char *client_host, int port,
     GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
   }
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/fake_resolver.c b/test/core/end2end/fake_resolver.c
index 1c7dd1339c1ac273f98da15417f2c4b5ec9be05f..6a71c20b804f896f4bc5a961eedfbedf56842290 100644
--- a/test/core/end2end/fake_resolver.c
+++ b/test/core/end2end/fake_resolver.c
@@ -32,6 +32,7 @@
 // This is similar to the sockaddr resolver, except that it supports a
 // bunch of query args that are useful for dependency injection in tests.
 
+#include <limits.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -46,12 +47,18 @@
 #include "src/core/ext/filters/client_channel/parse_address.h"
 #include "src/core/ext/filters/client_channel/resolver_registry.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
+#include "test/core/end2end/fake_resolver.h"
+
+#define GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR \
+  "grpc.fake_resolver.response_generator"
+
 //
 // fake_resolver
 //
@@ -62,12 +69,11 @@ typedef struct {
 
   // passed-in parameters
   grpc_channel_args* channel_args;
-  grpc_lb_addresses* addresses;
 
-  // mutex guarding the rest of the state
-  gpr_mu mu;
-  // have we published?
-  bool published;
+  // If not NULL, the next set of resolution results to be returned to
+  // grpc_resolver_next_locked()'s closure.
+  grpc_channel_args* next_results;
+
   // pending next completion, or NULL
   grpc_closure* next_completion;
   // target result address for next completion
@@ -76,60 +82,137 @@ typedef struct {
 
 static void fake_resolver_destroy(grpc_exec_ctx* exec_ctx, grpc_resolver* gr) {
   fake_resolver* r = (fake_resolver*)gr;
-  gpr_mu_destroy(&r->mu);
+  grpc_channel_args_destroy(exec_ctx, r->next_results);
   grpc_channel_args_destroy(exec_ctx, r->channel_args);
-  grpc_lb_addresses_destroy(exec_ctx, r->addresses);
   gpr_free(r);
 }
 
-static void fake_resolver_shutdown(grpc_exec_ctx* exec_ctx,
-                                   grpc_resolver* resolver) {
+static void fake_resolver_shutdown_locked(grpc_exec_ctx* exec_ctx,
+                                          grpc_resolver* resolver) {
   fake_resolver* r = (fake_resolver*)resolver;
-  gpr_mu_lock(&r->mu);
   if (r->next_completion != NULL) {
     *r->target_result = NULL;
     grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
   }
-  gpr_mu_unlock(&r->mu);
 }
 
 static void fake_resolver_maybe_finish_next_locked(grpc_exec_ctx* exec_ctx,
                                                    fake_resolver* r) {
-  if (r->next_completion != NULL && !r->published) {
-    r->published = true;
-    grpc_arg arg = grpc_lb_addresses_create_channel_arg(r->addresses);
+  if (r->next_completion != NULL && r->next_results != NULL) {
     *r->target_result =
-        grpc_channel_args_copy_and_add(r->channel_args, &arg, 1);
+        grpc_channel_args_merge(r->channel_args, r->next_results);
+    grpc_channel_args_destroy(exec_ctx, r->next_results);
     grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
+    r->next_results = NULL;
   }
 }
 
-static void fake_resolver_channel_saw_error(grpc_exec_ctx* exec_ctx,
-                                            grpc_resolver* resolver) {
+static void fake_resolver_channel_saw_error_locked(grpc_exec_ctx* exec_ctx,
+                                                   grpc_resolver* resolver) {
   fake_resolver* r = (fake_resolver*)resolver;
-  gpr_mu_lock(&r->mu);
-  r->published = false;
   fake_resolver_maybe_finish_next_locked(exec_ctx, r);
-  gpr_mu_unlock(&r->mu);
 }
 
-static void fake_resolver_next(grpc_exec_ctx* exec_ctx, grpc_resolver* resolver,
-                               grpc_channel_args** target_result,
-                               grpc_closure* on_complete) {
+static void fake_resolver_next_locked(grpc_exec_ctx* exec_ctx,
+                                      grpc_resolver* resolver,
+                                      grpc_channel_args** target_result,
+                                      grpc_closure* on_complete) {
   fake_resolver* r = (fake_resolver*)resolver;
-  gpr_mu_lock(&r->mu);
   GPR_ASSERT(!r->next_completion);
   r->next_completion = on_complete;
   r->target_result = target_result;
   fake_resolver_maybe_finish_next_locked(exec_ctx, r);
-  gpr_mu_unlock(&r->mu);
 }
 
 static const grpc_resolver_vtable fake_resolver_vtable = {
-    fake_resolver_destroy, fake_resolver_shutdown,
-    fake_resolver_channel_saw_error, fake_resolver_next};
+    fake_resolver_destroy, fake_resolver_shutdown_locked,
+    fake_resolver_channel_saw_error_locked, fake_resolver_next_locked};
+
+struct grpc_fake_resolver_response_generator {
+  fake_resolver* resolver;  // Set by the fake_resolver constructor to itself.
+  grpc_channel_args* next_response;
+  gpr_refcount refcount;
+};
+
+grpc_fake_resolver_response_generator*
+grpc_fake_resolver_response_generator_create() {
+  grpc_fake_resolver_response_generator* generator =
+      gpr_zalloc(sizeof(*generator));
+  gpr_ref_init(&generator->refcount, 1);
+  return generator;
+}
+
+grpc_fake_resolver_response_generator*
+grpc_fake_resolver_response_generator_ref(
+    grpc_fake_resolver_response_generator* generator) {
+  gpr_ref(&generator->refcount);
+  return generator;
+}
+
+void grpc_fake_resolver_response_generator_unref(
+    grpc_fake_resolver_response_generator* generator) {
+  if (gpr_unref(&generator->refcount)) {
+    gpr_free(generator);
+  }
+}
+
+static void set_response_cb(grpc_exec_ctx* exec_ctx, void* arg,
+                            grpc_error* error) {
+  grpc_fake_resolver_response_generator* generator = arg;
+  fake_resolver* r = generator->resolver;
+  if (r->next_results != NULL) {
+    grpc_channel_args_destroy(exec_ctx, r->next_results);
+  }
+  r->next_results = generator->next_response;
+  fake_resolver_maybe_finish_next_locked(exec_ctx, r);
+}
+
+void grpc_fake_resolver_response_generator_set_response(
+    grpc_exec_ctx* exec_ctx, grpc_fake_resolver_response_generator* generator,
+    grpc_channel_args* next_response) {
+  GPR_ASSERT(generator->resolver != NULL);
+  generator->next_response = grpc_channel_args_copy(next_response);
+  grpc_closure_sched(
+      exec_ctx,
+      grpc_closure_create(
+          set_response_cb, generator,
+          grpc_combiner_scheduler(generator->resolver->base.combiner, false)),
+      GRPC_ERROR_NONE);
+}
+
+static void* response_generator_arg_copy(void* p) {
+  return grpc_fake_resolver_response_generator_ref(p);
+}
+
+static void response_generator_arg_destroy(grpc_exec_ctx* exec_ctx, void* p) {
+  grpc_fake_resolver_response_generator_unref(p);
+}
+
+static int response_generator_cmp(void* a, void* b) { return GPR_ICMP(a, b); }
+
+static const grpc_arg_pointer_vtable response_generator_arg_vtable = {
+    response_generator_arg_copy, response_generator_arg_destroy,
+    response_generator_cmp};
+
+grpc_arg grpc_fake_resolver_response_generator_arg(
+    grpc_fake_resolver_response_generator* generator) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_POINTER;
+  arg.key = GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR;
+  arg.value.pointer.p = generator;
+  arg.value.pointer.vtable = &response_generator_arg_vtable;
+  return arg;
+}
+
+grpc_fake_resolver_response_generator*
+grpc_fake_resolver_get_response_generator(const grpc_channel_args* args) {
+  const grpc_arg* arg =
+      grpc_channel_args_find(args, GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR);
+  if (arg == NULL || arg->type != GRPC_ARG_POINTER) return NULL;
+  return arg->value.pointer.p;
+}
 
 //
 // fake_resolver_factory
@@ -139,81 +222,15 @@ static void fake_resolver_factory_ref(grpc_resolver_factory* factory) {}
 
 static void fake_resolver_factory_unref(grpc_resolver_factory* factory) {}
 
-static void do_nothing(void* ignored) {}
-
 static grpc_resolver* fake_resolver_create(grpc_exec_ctx* exec_ctx,
                                            grpc_resolver_factory* factory,
                                            grpc_resolver_args* args) {
-  if (0 != strcmp(args->uri->authority, "")) {
-    gpr_log(GPR_ERROR, "authority based uri's not supported by the %s scheme",
-            args->uri->scheme);
-    return NULL;
-  }
-  // Get lb_enabled arg.  Anything other than "0" is interpreted as true.
-  const char* lb_enabled_qpart =
-      grpc_uri_get_query_arg(args->uri, "lb_enabled");
-  const bool lb_enabled =
-      lb_enabled_qpart != NULL && strcmp("0", lb_enabled_qpart) != 0;
-
-  // Get the balancer's names.
-  const char* balancer_names =
-      grpc_uri_get_query_arg(args->uri, "balancer_names");
-  grpc_slice_buffer balancer_names_parts;
-  grpc_slice_buffer_init(&balancer_names_parts);
-  if (balancer_names != NULL) {
-    const grpc_slice balancer_names_slice =
-        grpc_slice_from_copied_string(balancer_names);
-    grpc_slice_split(balancer_names_slice, ",", &balancer_names_parts);
-    grpc_slice_unref(balancer_names_slice);
-  }
-
-  // Construct addresses.
-  grpc_slice path_slice =
-      grpc_slice_new(args->uri->path, strlen(args->uri->path), do_nothing);
-  grpc_slice_buffer path_parts;
-  grpc_slice_buffer_init(&path_parts);
-  grpc_slice_split(path_slice, ",", &path_parts);
-  if (balancer_names_parts.count > 0 &&
-      path_parts.count != balancer_names_parts.count) {
-    gpr_log(GPR_ERROR,
-            "Balancer names present but mismatched with number of addresses: "
-            "%lu balancer names != %lu addresses",
-            (unsigned long)balancer_names_parts.count,
-            (unsigned long)path_parts.count);
-    return NULL;
-  }
-  grpc_lb_addresses* addresses =
-      grpc_lb_addresses_create(path_parts.count, NULL /* user_data_vtable */);
-  bool errors_found = false;
-  for (size_t i = 0; i < addresses->num_addresses; i++) {
-    grpc_uri ith_uri = *args->uri;
-    char* part_str = grpc_slice_to_c_string(path_parts.slices[i]);
-    ith_uri.path = part_str;
-    if (!parse_ipv4(&ith_uri, &addresses->addresses[i].address)) {
-      errors_found = true;
-    }
-    gpr_free(part_str);
-    if (errors_found) break;
-    addresses->addresses[i].is_balancer = lb_enabled;
-    addresses->addresses[i].balancer_name =
-        balancer_names_parts.count > 0
-            ? grpc_dump_slice(balancer_names_parts.slices[i], GPR_DUMP_ASCII)
-            : NULL;
-  }
-  grpc_slice_buffer_destroy_internal(exec_ctx, &path_parts);
-  grpc_slice_buffer_destroy_internal(exec_ctx, &balancer_names_parts);
-  grpc_slice_unref(path_slice);
-  if (errors_found) {
-    grpc_lb_addresses_destroy(exec_ctx, addresses);
-    return NULL;
-  }
-  // Instantiate resolver.
-  fake_resolver* r = gpr_malloc(sizeof(fake_resolver));
-  memset(r, 0, sizeof(*r));
+  fake_resolver* r = gpr_zalloc(sizeof(*r));
   r->channel_args = grpc_channel_args_copy(args->args);
-  r->addresses = addresses;
-  gpr_mu_init(&r->mu);
   grpc_resolver_init(&r->base, &fake_resolver_vtable, args->combiner);
+  grpc_fake_resolver_response_generator* response_generator =
+      grpc_fake_resolver_get_response_generator(args->args);
+  if (response_generator != NULL) response_generator->resolver = r;
   return &r->base;
 }
 
diff --git a/test/core/end2end/fake_resolver.h b/test/core/end2end/fake_resolver.h
index 7a30347f301d1739d2d0461e6c24590977ea39aa..447289adefa9922089cc299be2ab69d0c669fc88 100644
--- a/test/core/end2end/fake_resolver.h
+++ b/test/core/end2end/fake_resolver.h
@@ -32,8 +32,42 @@
 #ifndef GRPC_TEST_CORE_END2END_FAKE_RESOLVER_H
 #define GRPC_TEST_CORE_END2END_FAKE_RESOLVER_H
 
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/uri_parser.h"
+#include "src/core/lib/channel/channel_args.h"
+
 #include "test/core/util/test_config.h"
 
 void grpc_fake_resolver_init();
 
+// Instances of \a grpc_fake_resolver_response_generator are passed to the
+// fake resolver in a channel argument (see \a
+// grpc_fake_resolver_response_generator_arg) in order to inject and trigger
+// custom resolutions. See also \a
+// grpc_fake_resolver_response_generator_set_response.
+typedef struct grpc_fake_resolver_response_generator
+    grpc_fake_resolver_response_generator;
+grpc_fake_resolver_response_generator*
+grpc_fake_resolver_response_generator_create();
+
+// Instruct the fake resolver associated with the \a response_generator instance
+// to trigger a new resolution for \a uri and \a args.
+void grpc_fake_resolver_response_generator_set_response(
+    grpc_exec_ctx* exec_ctx, grpc_fake_resolver_response_generator* generator,
+    grpc_channel_args* next_response);
+
+// Return a \a grpc_arg for a \a grpc_fake_resolver_response_generator instance.
+grpc_arg grpc_fake_resolver_response_generator_arg(
+    grpc_fake_resolver_response_generator* generator);
+// Return the \a grpc_fake_resolver_response_generator instance in \a args or
+// NULL.
+grpc_fake_resolver_response_generator*
+grpc_fake_resolver_get_response_generator(const grpc_channel_args* args);
+
+grpc_fake_resolver_response_generator*
+grpc_fake_resolver_response_generator_ref(
+    grpc_fake_resolver_response_generator* generator);
+void grpc_fake_resolver_response_generator_unref(
+    grpc_fake_resolver_response_generator* generator);
+
 #endif /* GRPC_TEST_CORE_END2END_FAKE_RESOLVER_H */
diff --git a/test/core/end2end/fixtures/h2_ssl_cert.c b/test/core/end2end/fixtures/h2_ssl_cert.c
index 7aa0e16bf6ce0a2f4b5b073e4e91b7923466f180..ba3956e8e3ebf2e881773cfa929c053546c4f904 100644
--- a/test/core/end2end/fixtures/h2_ssl_cert.c
+++ b/test/core/end2end/fixtures/h2_ssl_cert.c
@@ -343,7 +343,7 @@ static void simple_request_body(grpc_end2end_test_fixture f,
   CQ_EXPECT_COMPLETION(cqv, tag(1), expected_result == SUCCESS);
   cq_verify(cqv);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
   cq_verifier_destroy(cqv);
 }
 
diff --git a/test/core/end2end/fixtures/http_proxy_fixture.c b/test/core/end2end/fixtures/http_proxy_fixture.c
index 451ed268d305b2e53fe92f38f366296e8fd7457d..f0d09487c62d215db91fb78748b917e2b0685e06 100644
--- a/test/core/end2end/fixtures/http_proxy_fixture.c
+++ b/test/core/end2end/fixtures/http_proxy_fixture.c
@@ -59,6 +59,7 @@
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/tcp_client.h"
 #include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/port.h"
 
@@ -69,7 +70,7 @@ struct grpc_end2end_http_proxy {
   grpc_channel_args* channel_args;
   gpr_mu* mu;
   grpc_pollset* pollset;
-  gpr_atm shutdown;
+  gpr_refcount users;
 };
 
 //
@@ -77,6 +78,8 @@ struct grpc_end2end_http_proxy {
 //
 
 typedef struct proxy_connection {
+  grpc_end2end_http_proxy* proxy;
+
   grpc_endpoint* client_endpoint;
   grpc_endpoint* server_endpoint;
 
@@ -103,13 +106,20 @@ typedef struct proxy_connection {
   grpc_http_request http_request;
 } proxy_connection;
 
+static void proxy_connection_ref(proxy_connection* conn, const char* reason) {
+  gpr_ref(&conn->refcount);
+}
+
 // Helper function to destroy the proxy connection.
 static void proxy_connection_unref(grpc_exec_ctx* exec_ctx,
-                                   proxy_connection* conn) {
+                                   proxy_connection* conn, const char* reason) {
   if (gpr_unref(&conn->refcount)) {
+    gpr_log(GPR_DEBUG, "endpoints: %p %p", conn->client_endpoint,
+            conn->server_endpoint);
     grpc_endpoint_destroy(exec_ctx, conn->client_endpoint);
-    if (conn->server_endpoint != NULL)
+    if (conn->server_endpoint != NULL) {
       grpc_endpoint_destroy(exec_ctx, conn->server_endpoint);
+    }
     grpc_pollset_set_destroy(exec_ctx, conn->pollset_set);
     grpc_slice_buffer_destroy_internal(exec_ctx, &conn->client_read_buffer);
     grpc_slice_buffer_destroy_internal(exec_ctx,
@@ -121,6 +131,7 @@ static void proxy_connection_unref(grpc_exec_ctx* exec_ctx,
     grpc_slice_buffer_destroy_internal(exec_ctx, &conn->server_write_buffer);
     grpc_http_parser_destroy(&conn->http_parser);
     grpc_http_request_destroy(&conn->http_request);
+    gpr_unref(&conn->proxy->users);
     gpr_free(conn);
   }
 }
@@ -139,7 +150,7 @@ static void proxy_connection_failed(grpc_exec_ctx* exec_ctx,
     grpc_endpoint_shutdown(exec_ctx, conn->server_endpoint,
                            GRPC_ERROR_REF(error));
   }
-  proxy_connection_unref(exec_ctx, conn);
+  proxy_connection_unref(exec_ctx, conn, "conn_failed");
 }
 
 // Callback for writing proxy data to the client.
@@ -163,7 +174,7 @@ static void on_client_write_done(grpc_exec_ctx* exec_ctx, void* arg,
                         &conn->on_client_write_done);
   } else {
     // No more writes.  Unref the connection.
-    proxy_connection_unref(exec_ctx, conn);
+    proxy_connection_unref(exec_ctx, conn, "write_done");
   }
 }
 
@@ -188,7 +199,7 @@ static void on_server_write_done(grpc_exec_ctx* exec_ctx, void* arg,
                         &conn->on_server_write_done);
   } else {
     // No more writes.  Unref the connection.
-    proxy_connection_unref(exec_ctx, conn);
+    proxy_connection_unref(exec_ctx, conn, "server_write");
   }
 }
 
@@ -214,7 +225,7 @@ static void on_client_read_done(grpc_exec_ctx* exec_ctx, void* arg,
   } else {
     grpc_slice_buffer_move_into(&conn->client_read_buffer,
                                 &conn->server_write_buffer);
-    gpr_ref(&conn->refcount);
+    proxy_connection_ref(conn, "client_read");
     grpc_endpoint_write(exec_ctx, conn->server_endpoint,
                         &conn->server_write_buffer,
                         &conn->on_server_write_done);
@@ -246,7 +257,7 @@ static void on_server_read_done(grpc_exec_ctx* exec_ctx, void* arg,
   } else {
     grpc_slice_buffer_move_into(&conn->server_read_buffer,
                                 &conn->client_write_buffer);
-    gpr_ref(&conn->refcount);
+    proxy_connection_ref(conn, "server_read");
     grpc_endpoint_write(exec_ctx, conn->client_endpoint,
                         &conn->client_write_buffer,
                         &conn->on_client_write_done);
@@ -270,7 +281,9 @@ static void on_write_response_done(grpc_exec_ctx* exec_ctx, void* arg,
   // Start reading from both client and server.  One of the read
   // requests inherits our ref to conn, but we need to take a new ref
   // for the other one.
-  gpr_ref(&conn->refcount);
+  proxy_connection_ref(conn, "client_read");
+  proxy_connection_ref(conn, "server_read");
+  proxy_connection_unref(exec_ctx, conn, "write_response");
   grpc_endpoint_read(exec_ctx, conn->client_endpoint, &conn->client_read_buffer,
                      &conn->on_client_read_done);
   grpc_endpoint_read(exec_ctx, conn->server_endpoint, &conn->server_read_buffer,
@@ -312,6 +325,8 @@ static void on_server_connect_done(grpc_exec_ctx* exec_ctx, void* arg,
 static void on_read_request_done(grpc_exec_ctx* exec_ctx, void* arg,
                                  grpc_error* error) {
   proxy_connection* conn = arg;
+  gpr_log(GPR_DEBUG, "on_read_request_done: %p %s", conn,
+          grpc_error_string(error));
   if (error != GRPC_ERROR_NONE) {
     proxy_connection_failed(exec_ctx, conn, true /* is_client */,
                             "HTTP proxy read request", error);
@@ -376,12 +391,14 @@ static void on_accept(grpc_exec_ctx* exec_ctx, void* arg,
   gpr_free(acceptor);
   grpc_end2end_http_proxy* proxy = arg;
   // Instantiate proxy_connection.
-  proxy_connection* conn = gpr_malloc(sizeof(*conn));
-  memset(conn, 0, sizeof(*conn));
+  proxy_connection* conn = gpr_zalloc(sizeof(*conn));
+  gpr_ref(&proxy->users);
   conn->client_endpoint = endpoint;
+  conn->proxy = proxy;
   gpr_ref_init(&conn->refcount, 1);
   conn->pollset_set = grpc_pollset_set_create();
   grpc_pollset_set_add_pollset(exec_ctx, conn->pollset_set, proxy->pollset);
+  grpc_endpoint_add_to_pollset_set(exec_ctx, endpoint, conn->pollset_set);
   grpc_closure_init(&conn->on_read_request_done, on_read_request_done, conn,
                     grpc_schedule_on_exec_ctx);
   grpc_closure_init(&conn->on_server_connect_done, on_server_connect_done, conn,
@@ -416,6 +433,7 @@ static void thread_main(void* arg) {
   grpc_end2end_http_proxy* proxy = arg;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   do {
+    gpr_ref(&proxy->users);
     const gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
     const gpr_timespec deadline =
         gpr_time_add(now, gpr_time_from_seconds(1, GPR_TIMESPAN));
@@ -426,7 +444,7 @@ static void thread_main(void* arg) {
         grpc_pollset_work(&exec_ctx, proxy->pollset, &worker, now, deadline));
     gpr_mu_unlock(proxy->mu);
     grpc_exec_ctx_flush(&exec_ctx);
-  } while (!gpr_atm_acq_load(&proxy->shutdown));
+  } while (!gpr_unref(&proxy->users));
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
@@ -434,6 +452,7 @@ grpc_end2end_http_proxy* grpc_end2end_http_proxy_create(void) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_end2end_http_proxy* proxy = gpr_malloc(sizeof(*proxy));
   memset(proxy, 0, sizeof(*proxy));
+  gpr_ref_init(&proxy->users, 1);
   // Construct proxy address.
   const int proxy_port = grpc_pick_unused_port_or_die();
   gpr_join_host_port(&proxy->proxy_name, "localhost", proxy_port);
@@ -474,17 +493,16 @@ static void destroy_pollset(grpc_exec_ctx* exec_ctx, void* arg,
 }
 
 void grpc_end2end_http_proxy_destroy(grpc_end2end_http_proxy* proxy) {
-  gpr_atm_rel_store(&proxy->shutdown, 1);  // Signal proxy thread to shutdown.
+  gpr_unref(&proxy->users);  // Signal proxy thread to shutdown.
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   gpr_thd_join(proxy->thd);
   grpc_tcp_server_shutdown_listeners(&exec_ctx, proxy->server);
   grpc_tcp_server_unref(&exec_ctx, proxy->server);
   gpr_free(proxy->proxy_name);
   grpc_channel_args_destroy(&exec_ctx, proxy->channel_args);
-  grpc_closure destroyed;
-  grpc_closure_init(&destroyed, destroy_pollset, proxy->pollset,
-                    grpc_schedule_on_exec_ctx);
-  grpc_pollset_shutdown(&exec_ctx, proxy->pollset, &destroyed);
+  grpc_pollset_shutdown(&exec_ctx, proxy->pollset,
+                        grpc_closure_create(destroy_pollset, proxy->pollset,
+                                            grpc_schedule_on_exec_ctx));
   gpr_free(proxy);
   grpc_exec_ctx_finish(&exec_ctx);
 }
diff --git a/test/core/end2end/fixtures/proxy.c b/test/core/end2end/fixtures/proxy.c
index b8b1e5c6c98a61e715602b70258517e1eca2b132..d660073ce6565bff89d5d54873cedad3ed1e24c6 100644
--- a/test/core/end2end/fixtures/proxy.c
+++ b/test/core/end2end/fixtures/proxy.c
@@ -148,8 +148,8 @@ void grpc_end2end_proxy_destroy(grpc_end2end_proxy *proxy) {
 
 static void unrefpc(proxy_call *pc, const char *reason) {
   if (gpr_unref(&pc->refs)) {
-    grpc_call_destroy(pc->c2p);
-    grpc_call_destroy(pc->p2s);
+    grpc_call_unref(pc->c2p);
+    grpc_call_unref(pc->p2s);
     grpc_metadata_array_destroy(&pc->c2p_initial_metadata);
     grpc_metadata_array_destroy(&pc->p2s_initial_metadata);
     grpc_metadata_array_destroy(&pc->p2s_trailing_metadata);
diff --git a/test/core/end2end/fuzzers/api_fuzzer.c b/test/core/end2end/fuzzers/api_fuzzer.c
index 83c82ba5c02e9100dcbae67b2c1378c4e30b0d20..88a0e301da166c0b1e4bd531dae3150bbc95bdf4 100644
--- a/test/core/end2end/fuzzers/api_fuzzer.c
+++ b/test/core/end2end/fuzzers/api_fuzzer.c
@@ -661,7 +661,7 @@ static void read_metadata(input_stream *inp, size_t *count,
 }
 
 static call_state *destroy_call(call_state *call) {
-  grpc_call_destroy(call->call);
+  grpc_call_unref(call->call);
   call->call = NULL;
   return maybe_delete_call_state(call);
 }
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6462055064272896 b/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6462055064272896
new file mode 100644
index 0000000000000000000000000000000000000000..c12128324259b3f178845e2d8672bd6bca483def
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6462055064272896 differ
diff --git a/test/core/end2end/fuzzers/client_fuzzer.c b/test/core/end2end/fuzzers/client_fuzzer.c
index bc322e45a39611ce03a36c83b9c9c112e137a502..6f49baffd2c4445c898250a5235e59401256c784 100644
--- a/test/core/end2end/fuzzers/client_fuzzer.c
+++ b/test/core/end2end/fuzzers/client_fuzzer.c
@@ -151,7 +151,7 @@ done:
     ev = grpc_completion_queue_next(cq, gpr_inf_past(GPR_CLOCK_REALTIME), NULL);
     GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
   }
-  grpc_call_destroy(call);
+  grpc_call_unref(call);
   grpc_completion_queue_destroy(cq);
   grpc_metadata_array_destroy(&initial_metadata_recv);
   grpc_metadata_array_destroy(&trailing_metadata_recv);
diff --git a/test/core/end2end/fuzzers/hpack.dictionary b/test/core/end2end/fuzzers/hpack.dictionary
index 4282c61214668643e7403ef9c6df51242dc92f8e..2bb9de34c563a9350682640f7786d10f09bed6ca 100644
--- a/test/core/end2end/fuzzers/hpack.dictionary
+++ b/test/core/end2end/fuzzers/hpack.dictionary
@@ -77,6 +77,7 @@
 "\x08if-range"
 "\x13if-unmodified-since"
 "\x0Dlast-modified"
+"\x0Blb-cost-bin"
 "\x04link"
 "\x08location"
 "\x0Cmax-forwards"
@@ -153,6 +154,7 @@
 "\x00\x13if-unmodified-since\x00"
 "\x00\x0Dlast-modified\x00"
 "\x00\x08lb-token\x00"
+"\x00\x0Blb-cost-bin\x00"
 "\x00\x04link\x00"
 "\x00\x08location\x00"
 "\x00\x0Cmax-forwards\x00"
diff --git a/test/core/end2end/fuzzers/server_fuzzer.c b/test/core/end2end/fuzzers/server_fuzzer.c
index 97b436cdf9dc1ac034be86d3ceccd05f392d386e..6d65fe1847b0435428c10f3721375c5d0ba80cfd 100644
--- a/test/core/end2end/fuzzers/server_fuzzer.c
+++ b/test/core/end2end/fuzzers/server_fuzzer.c
@@ -109,7 +109,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   }
 
 done:
-  if (call1 != NULL) grpc_call_destroy(call1);
+  if (call1 != NULL) grpc_call_unref(call1);
   grpc_call_details_destroy(&call_details1);
   grpc_metadata_array_destroy(&request_metadata1);
   grpc_server_shutdown_and_notify(server, cq, tag(0xdead));
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index d1e510d6362505b7d2d2eebcd1fd1e7ba1fca163..48e57205395f236ad04066fdfea1ffe4374170d2 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -39,9 +39,9 @@ import hashlib
 
 FixtureOptions = collections.namedtuple(
     'FixtureOptions',
-    'fullstack includes_proxy dns_resolver secure platforms ci_mac tracing exclude_configs exclude_iomgrs large_writes')
+    'fullstack includes_proxy dns_resolver secure platforms ci_mac tracing exclude_configs exclude_iomgrs large_writes enables_compression')
 default_unsecure_fixture_options = FixtureOptions(
-    True, False, True, False, ['windows', 'linux', 'mac', 'posix'], True, False, [], [], True)
+    True, False, True, False, ['windows', 'linux', 'mac', 'posix'], True, False, [], [], True, False)
 socketpair_unsecure_fixture_options = default_unsecure_fixture_options._replace(fullstack=False, dns_resolver=False)
 default_secure_fixture_options = default_unsecure_fixture_options._replace(secure=True)
 uds_fixture_options = default_unsecure_fixture_options._replace(dns_resolver=False, platforms=['linux', 'mac', 'posix'], exclude_iomgrs=['uv'])
@@ -51,8 +51,7 @@ fd_unsecure_fixture_options = default_unsecure_fixture_options._replace(
 
 # maps fixture name to whether it requires the security library
 END2END_FIXTURES = {
-    'h2_compress': default_unsecure_fixture_options,
-
+    'h2_compress': default_unsecure_fixture_options._replace(enables_compression=True),
     'h2_census': default_unsecure_fixture_options,
     'h2_load_reporting': default_unsecure_fixture_options,
     'h2_fakesec': default_secure_fixture_options._replace(ci_mac=False),
@@ -83,8 +82,8 @@ END2END_FIXTURES = {
 
 TestOptions = collections.namedtuple(
     'TestOptions',
-    'needs_fullstack needs_dns proxyable secure traceable cpu_cost exclude_iomgrs large_writes flaky')
-default_test_options = TestOptions(False, False, True, False, True, 1.0, [], False, False)
+    'needs_fullstack needs_dns proxyable secure traceable cpu_cost exclude_iomgrs large_writes flaky allow_compression')
+default_test_options = TestOptions(False, False, True, False, True, 1.0, [], False, False, True)
 connectivity_test_options = default_test_options._replace(needs_fullstack=True)
 
 LOWCPU = 0.1
@@ -94,12 +93,13 @@ END2END_TESTS = {
     'authority_not_supported': default_test_options,
     'bad_hostname': default_test_options,
     'bad_ping': connectivity_test_options._replace(proxyable=False),
-    'binary_metadata': default_test_options,
+    'binary_metadata': default_test_options._replace(cpu_cost=LOWCPU),
     'resource_quota_server': default_test_options._replace(large_writes=True,
-                                                           proxyable=False),
+                                                           proxyable=False,
+                                                           allow_compression=False),
     'call_creds': default_test_options._replace(secure=True),
     'cancel_after_accept': default_test_options._replace(cpu_cost=LOWCPU),
-    'cancel_after_client_done': default_test_options,
+    'cancel_after_client_done': default_test_options._replace(cpu_cost=LOWCPU),
     'cancel_after_invoke': default_test_options._replace(cpu_cost=LOWCPU),
     'cancel_before_invoke': default_test_options._replace(cpu_cost=LOWCPU),
     'cancel_in_a_vacuum': default_test_options._replace(cpu_cost=LOWCPU),
@@ -110,46 +110,49 @@ END2END_TESTS = {
     'default_host': default_test_options._replace(needs_fullstack=True,
                                                   needs_dns=True),
     'disappearing_server': connectivity_test_options._replace(flaky=True),
-    'empty_batch': default_test_options,
-    'filter_causes_close': default_test_options,
+    'empty_batch': default_test_options._replace(cpu_cost=LOWCPU),
+    'filter_causes_close': default_test_options._replace(cpu_cost=LOWCPU),
     'filter_call_init_fails': default_test_options,
-    'filter_latency': default_test_options,
+    'filter_latency': default_test_options._replace(cpu_cost=LOWCPU),
     'graceful_server_shutdown': default_test_options._replace(cpu_cost=LOWCPU),
     'hpack_size': default_test_options._replace(proxyable=False,
-                                                traceable=False),
-    'high_initial_seqno': default_test_options,
+                                                traceable=False,
+                                                cpu_cost=LOWCPU),
+    'high_initial_seqno': default_test_options._replace(cpu_cost=LOWCPU),
     'idempotent_request': default_test_options,
     'invoke_large_request': default_test_options,
-    'keepalive_timeout': default_test_options._replace(proxyable=False),
+    'keepalive_timeout': default_test_options._replace(proxyable=False,
+                                                       cpu_cost=LOWCPU),
     'large_metadata': default_test_options,
-    'max_concurrent_streams': default_test_options._replace(proxyable=False),
-    'max_connection_age': default_test_options,
+    'max_concurrent_streams': default_test_options._replace(
+        proxyable=False, cpu_cost=LOWCPU),
+    'max_connection_age': default_test_options._replace(cpu_cost=LOWCPU),
     'max_connection_idle': connectivity_test_options._replace(
-        proxyable=False, exclude_iomgrs=['uv']),
-    'max_message_length': default_test_options,
+        proxyable=False, exclude_iomgrs=['uv'], cpu_cost=LOWCPU),
+    'max_message_length': default_test_options._replace(cpu_cost=LOWCPU),
     'negative_deadline': default_test_options,
-    'network_status_change': default_test_options,
+    'network_status_change': default_test_options._replace(cpu_cost=LOWCPU),
     'no_logging': default_test_options._replace(traceable=False),
     'no_op': default_test_options,
     'payload': default_test_options,
     'load_reporting_hook': default_test_options,
-    'ping_pong_streaming': default_test_options,
-    'ping': connectivity_test_options._replace(proxyable=False),
+    'ping_pong_streaming': default_test_options._replace(cpu_cost=LOWCPU),
+    'ping': connectivity_test_options._replace(proxyable=False, cpu_cost=LOWCPU),
     'registered_call': default_test_options,
     'request_with_flags': default_test_options._replace(
         proxyable=False, cpu_cost=LOWCPU),
-    'request_with_payload': default_test_options,
-    'server_finishes_request': default_test_options,
-    'shutdown_finishes_calls': default_test_options,
-    'shutdown_finishes_tags': default_test_options,
-    'simple_cacheable_request': default_test_options,
+    'request_with_payload': default_test_options._replace(cpu_cost=LOWCPU),
+    'server_finishes_request': default_test_options._replace(cpu_cost=LOWCPU),
+    'shutdown_finishes_calls': default_test_options._replace(cpu_cost=LOWCPU),
+    'shutdown_finishes_tags': default_test_options._replace(cpu_cost=LOWCPU),
+    'simple_cacheable_request': default_test_options._replace(cpu_cost=LOWCPU),
     'simple_delayed_request': connectivity_test_options,
     'simple_metadata': default_test_options,
     'simple_request': default_test_options,
-    'streaming_error_response': default_test_options,
+    'streaming_error_response': default_test_options._replace(cpu_cost=LOWCPU),
     'trailing_metadata': default_test_options,
-    'write_buffering': default_test_options,
-    'write_buffering_at_end': default_test_options,
+    'write_buffering': default_test_options._replace(cpu_cost=LOWCPU),
+    'write_buffering_at_end': default_test_options._replace(cpu_cost=LOWCPU),
 }
 
 
@@ -169,6 +172,9 @@ def compatible(f, t):
   if END2END_TESTS[t].large_writes:
     if not END2END_FIXTURES[f].large_writes:
       return False
+  if not END2END_TESTS[t].allow_compression:
+    if END2END_FIXTURES[f].enables_compression:
+      return False
   return True
 
 
diff --git a/test/core/end2end/goaway_server_test.c b/test/core/end2end/goaway_server_test.c
index a028fb7f5c55d39db3191482971d7eec6086e88a..ababdb70a8016cfb955ec94b15ac515d91e55c96 100644
--- a/test/core/end2end/goaway_server_test.c
+++ b/test/core/end2end/goaway_server_test.c
@@ -302,10 +302,10 @@ int main(int argc, char **argv) {
   CQ_EXPECT_COMPLETION(cqv, tag(0xdead2), 1);
   cq_verify(cqv);
 
-  grpc_call_destroy(call1);
-  grpc_call_destroy(call2);
-  grpc_call_destroy(server_call1);
-  grpc_call_destroy(server_call2);
+  grpc_call_unref(call1);
+  grpc_call_unref(call2);
+  grpc_call_unref(server_call1);
+  grpc_call_unref(server_call2);
   grpc_server_destroy(server1);
   grpc_server_destroy(server2);
   grpc_channel_destroy(chan);
diff --git a/test/core/end2end/invalid_call_argument_test.c b/test/core/end2end/invalid_call_argument_test.c
index e89e59767f97a873ac216726e3ad7c52ddb296aa..e9a31f278c75800522a0d291dd54a495fb55388d 100644
--- a/test/core/end2end/invalid_call_argument_test.c
+++ b/test/core/end2end/invalid_call_argument_test.c
@@ -126,7 +126,7 @@ static void prepare_test(int is_client) {
 
 static void cleanup_test() {
   grpc_completion_queue *shutdown_cq;
-  grpc_call_destroy(g_state.call);
+  grpc_call_unref(g_state.call);
   cq_verifier_destroy(g_state.cqv);
   grpc_channel_destroy(g_state.chan);
   grpc_slice_unref(g_state.details);
@@ -135,7 +135,7 @@ static void cleanup_test() {
 
   if (!g_state.is_client) {
     shutdown_cq = grpc_completion_queue_create_for_pluck(NULL);
-    grpc_call_destroy(g_state.server_call);
+    grpc_call_unref(g_state.server_call);
     grpc_server_shutdown_and_notify(g_state.server, shutdown_cq, tag(1000));
     GPR_ASSERT(grpc_completion_queue_pluck(shutdown_cq, tag(1000),
                                            grpc_timeout_seconds_to_deadline(5),
diff --git a/test/core/end2end/no_server_test.c b/test/core/end2end/no_server_test.c
index dd18b0c6923b552c7a3a09cf060148e338b5cfba..a479d5c868ad1bce652587671208366728631313 100644
--- a/test/core/end2end/no_server_test.c
+++ b/test/core/end2end/no_server_test.c
@@ -97,7 +97,7 @@ int main(int argc, char **argv) {
           .type != GRPC_QUEUE_SHUTDOWN)
     ;
   grpc_completion_queue_destroy(cq);
-  grpc_call_destroy(call);
+  grpc_call_unref(call);
   grpc_channel_destroy(chan);
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/authority_not_supported.c b/test/core/end2end/tests/authority_not_supported.c
index f9298f1fa78c6ea897938089936265f9f73868bf..13cda08617347c4d497385e6bab1c364e05d61ff 100644
--- a/test/core/end2end/tests/authority_not_supported.c
+++ b/test/core/end2end/tests/authority_not_supported.c
@@ -182,7 +182,7 @@ static void test_with_authority_header(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&initial_metadata_recv);
   grpc_metadata_array_destroy(&trailing_metadata_recv);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/bad_hostname.c b/test/core/end2end/tests/bad_hostname.c
index 72a44d0de54e97d698e0034c65ab574b7643f3c8..35a531cf7854da33a89d0c1ea51edb322d9efedf 100644
--- a/test/core/end2end/tests/bad_hostname.c
+++ b/test/core/end2end/tests/bad_hostname.c
@@ -163,7 +163,7 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/bad_ping.c b/test/core/end2end/tests/bad_ping.c
index 38cd1dfa8436d5bdf41030700e150527074a2beb..0928ba60cf9116c0c8fdd936db6ebf9b52968ed3 100644
--- a/test/core/end2end/tests/bad_ping.c
+++ b/test/core/end2end/tests/bad_ping.c
@@ -208,7 +208,7 @@ static void test_bad_ping(grpc_end2end_test_config config) {
   CQ_EXPECT_COMPLETION(cqv, tag(0xdead), 1);
   cq_verify(cqv);
 
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
 
   // The connection should be closed immediately after the misbehaved pings,
   // the in-progress RPC should fail.
@@ -224,7 +224,7 @@ static void test_bad_ping(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&trailing_metadata_recv);
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
   cq_verifier_destroy(cqv);
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/binary_metadata.c b/test/core/end2end/tests/binary_metadata.c
index 2bddd053d6afc2a443032b391011440b08c0264b..3d36849400a162364833372753a6b68c34fee570 100644
--- a/test/core/end2end/tests/binary_metadata.c
+++ b/test/core/end2end/tests/binary_metadata.c
@@ -314,8 +314,8 @@ static void test_request_response_with_metadata_and_payload(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/call_creds.c b/test/core/end2end/tests/call_creds.c
index 9ec9701f9cc6f0ba2eff799641eda4932ec02ad1..bc430e56b3331f1fcd9e0d23d25d656769705ab5 100644
--- a/test/core/end2end/tests/call_creds.c
+++ b/test/core/end2end/tests/call_creds.c
@@ -347,8 +347,8 @@ static void request_response_with_payload_and_call_creds(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
@@ -473,7 +473,7 @@ static void test_request_with_server_rejecting_client_creds(
   grpc_byte_buffer_destroy(response_payload_recv);
   grpc_slice_unref(details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
   end_test(&f);
diff --git a/test/core/end2end/tests/cancel_after_accept.c b/test/core/end2end/tests/cancel_after_accept.c
index 7946865a8392231259e4779291bc62096a25ddb7..e6bcd9d6a30efc208f341ce8ef129d38ed57c1d8 100644
--- a/test/core/end2end/tests/cancel_after_accept.c
+++ b/test/core/end2end/tests/cancel_after_accept.c
@@ -252,8 +252,8 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
   grpc_byte_buffer_destroy(response_payload_recv);
   grpc_slice_unref(details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   if (args != NULL) {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
diff --git a/test/core/end2end/tests/cancel_after_client_done.c b/test/core/end2end/tests/cancel_after_client_done.c
index 7089f3f557a966a3b0d02f0b0dab9d418d2c8da0..d0e68354d9fd9e162e804e785114fb5746cffb98 100644
--- a/test/core/end2end/tests/cancel_after_client_done.c
+++ b/test/core/end2end/tests/cancel_after_client_done.c
@@ -229,8 +229,8 @@ static void test_cancel_after_accept_and_writes_closed(
   grpc_byte_buffer_destroy(response_payload_recv);
   grpc_slice_unref(details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
   end_test(&f);
diff --git a/test/core/end2end/tests/cancel_after_invoke.c b/test/core/end2end/tests/cancel_after_invoke.c
index f29012b86dc72f0f5d55fadda41fcc8a4d501e20..5bc9ed283bb6d01f08b7b8889da91aa924fd755f 100644
--- a/test/core/end2end/tests/cancel_after_invoke.c
+++ b/test/core/end2end/tests/cancel_after_invoke.c
@@ -49,11 +49,12 @@ static void *tag(intptr_t t) { return (void *)t; }
 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                             const char *test_name,
                                             cancellation_mode mode,
+                                            size_t test_ops,
                                             grpc_channel_args *client_args,
                                             grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
-  gpr_log(GPR_INFO, "Running test: %s/%s/%s", test_name, config.name,
-          mode.name);
+  gpr_log(GPR_INFO, "Running test: %s/%s/%s [%" PRIdPTR " ops]", test_name,
+          config.name, mode.name, test_ops);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
   config.init_client(&f, client_args);
@@ -108,8 +109,8 @@ static void test_cancel_after_invoke(grpc_end2end_test_config config,
   grpc_op ops[6];
   grpc_op *op;
   grpc_call *c;
-  grpc_end2end_test_fixture f =
-      begin_test(config, "test_cancel_after_invoke", mode, NULL, NULL);
+  grpc_end2end_test_fixture f = begin_test(config, "test_cancel_after_invoke",
+                                           mode, test_ops, NULL, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_metadata_array initial_metadata_recv;
   grpc_metadata_array trailing_metadata_recv;
@@ -189,7 +190,7 @@ static void test_cancel_after_invoke(grpc_end2end_test_config config,
   grpc_byte_buffer_destroy(response_payload_recv);
   grpc_slice_unref(details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
   end_test(&f);
diff --git a/test/core/end2end/tests/cancel_before_invoke.c b/test/core/end2end/tests/cancel_before_invoke.c
index 1b1296dc2a629877136955c34693fe8e56900017..67d2e9b8abcd2e3b3a0f1744297d15cbaa78549f 100644
--- a/test/core/end2end/tests/cancel_before_invoke.c
+++ b/test/core/end2end/tests/cancel_before_invoke.c
@@ -186,7 +186,7 @@ static void test_cancel_before_invoke(grpc_end2end_test_config config,
   grpc_byte_buffer_destroy(response_payload_recv);
   grpc_slice_unref(details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
   end_test(&f);
diff --git a/test/core/end2end/tests/cancel_in_a_vacuum.c b/test/core/end2end/tests/cancel_in_a_vacuum.c
index 4f5e49643281198e213121b6debc76e435a05cc7..1235cef2dce3094ca754090d2274992ffed44c6f 100644
--- a/test/core/end2end/tests/cancel_in_a_vacuum.c
+++ b/test/core/end2end/tests/cancel_in_a_vacuum.c
@@ -118,7 +118,7 @@ static void test_cancel_in_a_vacuum(grpc_end2end_test_config config,
 
   GPR_ASSERT(GRPC_CALL_OK == mode.initiate_cancel(c, NULL));
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(v_client);
   end_test(&f);
diff --git a/test/core/end2end/tests/cancel_with_status.c b/test/core/end2end/tests/cancel_with_status.c
index 180748c2aeacb63c95bc726d5d4aa0a0e65f1659..e8259f99f116194657afd201ddafba64848809e1 100644
--- a/test/core/end2end/tests/cancel_with_status.c
+++ b/test/core/end2end/tests/cancel_with_status.c
@@ -165,7 +165,7 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&initial_metadata_recv);
   grpc_metadata_array_destroy(&trailing_metadata_recv);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/compressed_payload.c b/test/core/end2end/tests/compressed_payload.c
index 1671ce556478981e59acb3f321ed7a53420f173f..1fe8613adbef968f5266d4aaaeba5f44234242b0 100644
--- a/test/core/end2end/tests/compressed_payload.c
+++ b/test/core/end2end/tests/compressed_payload.c
@@ -261,8 +261,8 @@ static void request_for_disabled_algorithm(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
@@ -519,8 +519,8 @@ static void request_with_payload_template(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/default_host.c b/test/core/end2end/tests/default_host.c
index c0ae50ec620b293ec7d42ef1c8d89fe3d09d9735..efd26829327b8737da39f05eaabe5c6d16f331b2 100644
--- a/test/core/end2end/tests/default_host.c
+++ b/test/core/end2end/tests/default_host.c
@@ -214,8 +214,8 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/disappearing_server.c b/test/core/end2end/tests/disappearing_server.c
index 22492c0bfcb5a9a665daedca8da7c17e268f4734..23016f9ee5c867196d4f154c6032cf1f7e74549f 100644
--- a/test/core/end2end/tests/disappearing_server.c
+++ b/test/core/end2end/tests/disappearing_server.c
@@ -191,8 +191,8 @@ static void do_request_and_shutdown_server(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 }
 
 static void disappearing_server_test(grpc_end2end_test_config config) {
diff --git a/test/core/end2end/tests/empty_batch.c b/test/core/end2end/tests/empty_batch.c
index fe57a6e5145343b54a56f433da672a4f80b385da..d0971367a67b0617328673849242445cc0bbce50 100644
--- a/test/core/end2end/tests/empty_batch.c
+++ b/test/core/end2end/tests/empty_batch.c
@@ -121,7 +121,7 @@ static void empty_batch_body(grpc_end2end_test_config config,
   CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
   cq_verify(cqv);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/filter_call_init_fails.c b/test/core/end2end/tests/filter_call_init_fails.c
index 8d654d7587437b6ffadf8c6aa7faa0deac8f5a00..3402584fd9a3e0262cb40c4f9fb09d57ae6ea4e6 100644
--- a/test/core/end2end/tests/filter_call_init_fails.c
+++ b/test/core/end2end/tests/filter_call_init_fails.c
@@ -194,7 +194,7 @@ static void test_server_channel_filter(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
@@ -284,7 +284,7 @@ static void test_client_channel_filter(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
@@ -372,7 +372,7 @@ static void test_client_subchannel_filter(grpc_end2end_test_config config) {
   // Reset and create a new call.  (The first call uses a different code
   // path in client_channel.c than subsequent calls on the same channel,
   // and we need to test both.)
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
   status = GRPC_STATUS_OK;
   grpc_slice_unref(details);
   details = grpc_empty_slice();
@@ -399,7 +399,7 @@ static void test_client_subchannel_filter(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/filter_causes_close.c b/test/core/end2end/tests/filter_causes_close.c
index decfff34299b6d43edf710921401bcc44a489a0c..ede8fb49df0f5ca828bea619310c845b30a6fe95 100644
--- a/test/core/end2end/tests/filter_causes_close.c
+++ b/test/core/end2end/tests/filter_causes_close.c
@@ -189,7 +189,7 @@ static void test_request(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/filter_latency.c b/test/core/end2end/tests/filter_latency.c
index e87e7339b8f108b67d3608420fc66b8db269d4e4..7d2614a06769a48fdfab8f521a27289958e934be 100644
--- a/test/core/end2end/tests/filter_latency.c
+++ b/test/core/end2end/tests/filter_latency.c
@@ -228,8 +228,8 @@ static void test_request(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(s);
-  grpc_call_destroy(c);
+  grpc_call_unref(s);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/graceful_server_shutdown.c b/test/core/end2end/tests/graceful_server_shutdown.c
index efb54a4a1da918429a077839bcdc5b8f5ab81383..37ac33818f4c72fb7977ba52d1b3ce17b929abc1 100644
--- a/test/core/end2end/tests/graceful_server_shutdown.c
+++ b/test/core/end2end/tests/graceful_server_shutdown.c
@@ -192,7 +192,7 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
   cq_verify(cqv);
 
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
@@ -206,7 +206,7 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/high_initial_seqno.c b/test/core/end2end/tests/high_initial_seqno.c
index ae364fd2939a9c78ff53210341ce3f1a77fa7e83..893fdd6862111a4c6e3fae43c8691713b65986ad 100644
--- a/test/core/end2end/tests/high_initial_seqno.c
+++ b/test/core/end2end/tests/high_initial_seqno.c
@@ -205,8 +205,8 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   /* TODO(ctiller): this rate limits the test, and it should be removed when
                     retry has been implemented; until then cross-thread chatter
diff --git a/test/core/end2end/tests/hpack_size.c b/test/core/end2end/tests/hpack_size.c
index 15f5bb0240fc2496f4fc46979b813a79d1d2eeff..b1db58271e5d122d3a9dc14b407de6dfe8f07461 100644
--- a/test/core/end2end/tests/hpack_size.c
+++ b/test/core/end2end/tests/hpack_size.c
@@ -358,8 +358,8 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/idempotent_request.c b/test/core/end2end/tests/idempotent_request.c
index 9c1ec25855e9759031207274644869072520b5bc..1ea2ac477428619f1c4c248338d3bdffefaf2102 100644
--- a/test/core/end2end/tests/idempotent_request.c
+++ b/test/core/end2end/tests/idempotent_request.c
@@ -219,8 +219,8 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/invoke_large_request.c b/test/core/end2end/tests/invoke_large_request.c
index a437fd7fb74da3c89a0702d021229683bb0bc26f..a49cf4f3d727bc106080c2c77ccd49fb4ac1ce85 100644
--- a/test/core/end2end/tests/invoke_large_request.c
+++ b/test/core/end2end/tests/invoke_large_request.c
@@ -258,8 +258,8 @@ static void test_invoke_large_request(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/keepalive_timeout.c b/test/core/end2end/tests/keepalive_timeout.c
index 33a409b7bcc56c65b5ab0cd4318d27c0ad01a1e2..ceefe5db8e32acafae35f5aeb0c5dbc55a564cb4 100644
--- a/test/core/end2end/tests/keepalive_timeout.c
+++ b/test/core/end2end/tests/keepalive_timeout.c
@@ -223,8 +223,8 @@ static void test_keepalive_timeout(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/large_metadata.c b/test/core/end2end/tests/large_metadata.c
index cef03b69df831a0a57cf329740e2a377bf1e53e1..dd796889dbcd01bcacdaf618e4df103e52d9987f 100644
--- a/test/core/end2end/tests/large_metadata.c
+++ b/test/core/end2end/tests/large_metadata.c
@@ -246,8 +246,8 @@ static void test_request_with_large_metadata(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/load_reporting_hook.c b/test/core/end2end/tests/load_reporting_hook.c
index 72e9db6e2147d36606cd986d7763ee9d532de70d..5f671405c271e2b9097f114aecd9841cc7e1049b 100644
--- a/test/core/end2end/tests/load_reporting_hook.c
+++ b/test/core/end2end/tests/load_reporting_hook.c
@@ -129,8 +129,7 @@ static void end_test(grpc_end2end_test_fixture *f) {
 static void request_response_with_payload(
     grpc_end2end_test_config config, grpc_end2end_test_fixture f,
     const char *method_name, const char *request_msg, const char *response_msg,
-    grpc_metadata *initial_lr_metadata,
-    grpc_load_reporting_cost_context *cost_ctx) {
+    grpc_metadata *initial_lr_metadata, grpc_metadata *trailing_lr_metadata) {
   grpc_slice request_payload_slice = grpc_slice_from_static_string(request_msg);
   grpc_slice response_payload_slice =
       grpc_slice_from_static_string(response_msg);
@@ -243,8 +242,9 @@ static void request_response_with_payload(
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
-  GPR_ASSERT(cost_ctx != NULL);
-  grpc_call_set_load_reporting_cost_context(s, cost_ctx);
+  GPR_ASSERT(trailing_lr_metadata != NULL);
+  op->data.send_status_from_server.trailing_metadata_count = 1;
+  op->data.send_status_from_server.trailing_metadata = trailing_lr_metadata;
   op->data.send_status_from_server.status = GRPC_STATUS_OK;
   grpc_slice status_details = grpc_slice_from_static_string("xyz");
   op->data.send_status_from_server.status_details = &status_details;
@@ -266,8 +266,8 @@ static void request_response_with_payload(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
@@ -298,21 +298,21 @@ static void test_load_reporting_hook(grpc_end2end_test_config config) {
   const char *response_msg = "... and the response from the server";
 
   grpc_metadata initial_lr_metadata;
+  grpc_metadata trailing_lr_metadata;
 
   initial_lr_metadata.key = GRPC_MDSTR_LB_TOKEN;
   initial_lr_metadata.value = grpc_slice_from_static_string("client-token");
   memset(&initial_lr_metadata.internal_data, 0,
          sizeof(initial_lr_metadata.internal_data));
 
-  grpc_load_reporting_cost_context *cost_ctx = gpr_malloc(sizeof(*cost_ctx));
-  memset(cost_ctx, 0, sizeof(*cost_ctx));
-  cost_ctx->values_count = 1;
-  cost_ctx->values =
-      gpr_malloc(sizeof(*cost_ctx->values) * cost_ctx->values_count);
-  cost_ctx->values[0] = grpc_slice_from_static_string("cost-token");
+  trailing_lr_metadata.key = GRPC_MDSTR_LB_COST_BIN;
+  trailing_lr_metadata.value = grpc_slice_from_static_string("server-token");
+  memset(&trailing_lr_metadata.internal_data, 0,
+         sizeof(trailing_lr_metadata.internal_data));
 
   request_response_with_payload(config, f, method_name, request_msg,
-                                response_msg, &initial_lr_metadata, cost_ctx);
+                                response_msg, &initial_lr_metadata,
+                                &trailing_lr_metadata);
   end_test(&f);
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
diff --git a/test/core/end2end/tests/max_concurrent_streams.c b/test/core/end2end/tests/max_concurrent_streams.c
index 645701613b53e477aedf2b4f587b0db01284e578..8ec92e476a36d8f4601ae831c36bee7828fc4362 100644
--- a/test/core/end2end/tests/max_concurrent_streams.c
+++ b/test/core/end2end/tests/max_concurrent_streams.c
@@ -201,8 +201,8 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
@@ -433,10 +433,10 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
 
   cq_verifier_destroy(cqv);
 
-  grpc_call_destroy(c1);
-  grpc_call_destroy(s1);
-  grpc_call_destroy(c2);
-  grpc_call_destroy(s2);
+  grpc_call_unref(c1);
+  grpc_call_unref(s1);
+  grpc_call_unref(c2);
+  grpc_call_unref(s2);
 
   grpc_slice_unref(details1);
   grpc_slice_unref(details2);
@@ -628,10 +628,10 @@ static void test_max_concurrent_streams_with_timeout_on_first(
 
   cq_verifier_destroy(cqv);
 
-  grpc_call_destroy(c1);
-  grpc_call_destroy(s1);
-  grpc_call_destroy(c2);
-  grpc_call_destroy(s2);
+  grpc_call_unref(c1);
+  grpc_call_unref(s1);
+  grpc_call_unref(c2);
+  grpc_call_unref(s2);
 
   grpc_slice_unref(details1);
   grpc_slice_unref(details2);
@@ -789,7 +789,7 @@ static void test_max_concurrent_streams_with_timeout_on_second(
 
   /* second request is finished because of time out, so destroy the second call
    */
-  grpc_call_destroy(c2);
+  grpc_call_unref(c2);
 
   /* now reply the first call */
   memset(ops, 0, sizeof(ops));
@@ -821,8 +821,8 @@ static void test_max_concurrent_streams_with_timeout_on_second(
 
   cq_verifier_destroy(cqv);
 
-  grpc_call_destroy(c1);
-  grpc_call_destroy(s1);
+  grpc_call_unref(c1);
+  grpc_call_unref(s1);
 
   grpc_slice_unref(details1);
   grpc_slice_unref(details2);
diff --git a/test/core/end2end/tests/max_connection_age.c b/test/core/end2end/tests/max_connection_age.c
index 7b41fa597b69dcb5323572cd458d8c67f1e894dd..c470dcda6923bea93554f3d1b2dad374a5ae3550 100644
--- a/test/core/end2end/tests/max_connection_age.c
+++ b/test/core/end2end/tests/max_connection_age.c
@@ -214,7 +214,7 @@ static void test_max_age_forcibly_close(grpc_end2end_test_config config) {
   CQ_EXPECT_COMPLETION(cqv, tag(0xdead), true);
   cq_verify(cqv);
 
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
 
   /* The connection should be closed immediately after the max age grace period,
      the in-progress RPC should fail. */
@@ -230,7 +230,7 @@ static void test_max_age_forcibly_close(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&trailing_metadata_recv);
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
   cq_verifier_destroy(cqv);
   end_test(&f);
   config.tear_down_data(&f);
@@ -352,7 +352,7 @@ static void test_max_age_gracefully_close(grpc_end2end_test_config config) {
   CQ_EXPECT_COMPLETION(cqv, tag(0xdead), true);
   cq_verify(cqv);
 
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
 
   /* The connection is closed gracefully with goaway, the rpc should still be
      completed. */
@@ -368,7 +368,7 @@ static void test_max_age_gracefully_close(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&trailing_metadata_recv);
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
   cq_verifier_destroy(cqv);
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/max_connection_idle.c b/test/core/end2end/tests/max_connection_idle.c
index ceb02947fe0d54b1e2f14426b94fc24da5e75dff..488d945123a44952eeaf6369cf321508909a81db 100644
--- a/test/core/end2end/tests/max_connection_idle.c
+++ b/test/core/end2end/tests/max_connection_idle.c
@@ -175,8 +175,8 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/max_message_length.c b/test/core/end2end/tests/max_message_length.c
index 224c1cd83389aff6f21f7950272c480b213292e2..f65edab86573a87c5768cbc7ae32a2ba0849596b 100644
--- a/test/core/end2end/tests/max_message_length.c
+++ b/test/core/end2end/tests/max_message_length.c
@@ -289,8 +289,8 @@ done:
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(recv_payload);
 
-  grpc_call_destroy(c);
-  if (s != NULL) grpc_call_destroy(s);
+  grpc_call_unref(c);
+  if (s != NULL) grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
@@ -483,8 +483,8 @@ static void test_max_message_length_on_response(grpc_end2end_test_config config,
   grpc_byte_buffer_destroy(response_payload);
   grpc_byte_buffer_destroy(recv_payload);
 
-  grpc_call_destroy(c);
-  if (s != NULL) grpc_call_destroy(s);
+  grpc_call_unref(c);
+  if (s != NULL) grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/negative_deadline.c b/test/core/end2end/tests/negative_deadline.c
index 52c1a72bbf73b6da16def3c525615a13b514952c..113b650a9749edaac719ffa7a87029aab722469c 100644
--- a/test/core/end2end/tests/negative_deadline.c
+++ b/test/core/end2end/tests/negative_deadline.c
@@ -162,7 +162,7 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&initial_metadata_recv);
   grpc_metadata_array_destroy(&trailing_metadata_recv);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/network_status_change.c b/test/core/end2end/tests/network_status_change.c
index a810489bf22c121b2efd25465174b25ef0572be5..1ea4be81b1e71bf3a3b70a76e7bed833abaf278b 100644
--- a/test/core/end2end/tests/network_status_change.c
+++ b/test/core/end2end/tests/network_status_change.c
@@ -231,8 +231,8 @@ static void test_invoke_network_status_change(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/no_logging.c b/test/core/end2end/tests/no_logging.c
index 44e8188059050f9e83e35585bc8a702262075710..17b6886f2cb993ed2236ec71bf2a4a2deef223d8 100644
--- a/test/core/end2end/tests/no_logging.c
+++ b/test/core/end2end/tests/no_logging.c
@@ -244,8 +244,8 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/payload.c b/test/core/end2end/tests/payload.c
index df9004fb55bb4471f2cf0b385bdd4ed60fd70338..3f25ecb8ff60759f9c88c4b637b8555c4b260799 100644
--- a/test/core/end2end/tests/payload.c
+++ b/test/core/end2end/tests/payload.c
@@ -261,8 +261,8 @@ static void request_response_with_payload(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/ping_pong_streaming.c b/test/core/end2end/tests/ping_pong_streaming.c
index fc5a0a5ec34800fa1ca6cd2abe0fab73bd4f6037..598e45ee33fee76d55ec698f55bc92d41613f62a 100644
--- a/test/core/end2end/tests/ping_pong_streaming.c
+++ b/test/core/end2end/tests/ping_pong_streaming.c
@@ -265,8 +265,8 @@ static void test_pingpong_streaming(grpc_end2end_test_config config,
   CQ_EXPECT_COMPLETION(cqv, tag(104), 1);
   cq_verify(cqv);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/registered_call.c b/test/core/end2end/tests/registered_call.c
index 258040371f4b257ec64b22e4241530bc9f5a4b39..7e07a7129c27f3515ed42fb72e3fc1517e38a32c 100644
--- a/test/core/end2end/tests/registered_call.c
+++ b/test/core/end2end/tests/registered_call.c
@@ -200,8 +200,8 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/request_with_flags.c b/test/core/end2end/tests/request_with_flags.c
index e913fa46c36121230d63395222fd2d2a21a30a3c..daf15fa5f7218ed2c1a9b4b3d9018dbcbef419c5 100644
--- a/test/core/end2end/tests/request_with_flags.c
+++ b/test/core/end2end/tests/request_with_flags.c
@@ -179,7 +179,7 @@ static void test_invoke_request_with_flags(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/request_with_payload.c b/test/core/end2end/tests/request_with_payload.c
index 17c076109084683d44bc0d8525560725767bc274..43686d58abec627d2e86e33fad048589c90e49ed 100644
--- a/test/core/end2end/tests/request_with_payload.c
+++ b/test/core/end2end/tests/request_with_payload.c
@@ -226,8 +226,8 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/resource_quota_server.c b/test/core/end2end/tests/resource_quota_server.c
index b5bc39915a1f8d65f286ad765965195bccb62d28..2453ca1b89bf2eaf0de920eaea696dcfa06041cc 100644
--- a/test/core/end2end/tests/resource_quota_server.c
+++ b/test/core/end2end/tests/resource_quota_server.c
@@ -270,7 +270,7 @@ void resource_quota_server(grpc_end2end_test_config config) {
 
       grpc_metadata_array_destroy(&initial_metadata_recv[call_id]);
       grpc_metadata_array_destroy(&trailing_metadata_recv[call_id]);
-      grpc_call_destroy(client_calls[call_id]);
+      grpc_call_unref(client_calls[call_id]);
       grpc_slice_unref(details[call_id]);
 
       pending_client_calls--;
@@ -352,7 +352,7 @@ void resource_quota_server(grpc_end2end_test_config config) {
       GPR_ASSERT(pending_server_end_calls > 0);
       pending_server_end_calls--;
 
-      grpc_call_destroy(server_calls[call_id]);
+      grpc_call_unref(server_calls[call_id]);
     }
   }
 
diff --git a/test/core/end2end/tests/server_finishes_request.c b/test/core/end2end/tests/server_finishes_request.c
index 990f06309061282604a13dfe6a76031ed7128fb8..be0901bfdd8c606f2398cbe10933592a39850dfb 100644
--- a/test/core/end2end/tests/server_finishes_request.c
+++ b/test/core/end2end/tests/server_finishes_request.c
@@ -199,8 +199,8 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/shutdown_finishes_calls.c b/test/core/end2end/tests/shutdown_finishes_calls.c
index 23854235384b80e933494001f72352974bfd71e1..d19af1a74df0256ac6da64a01466a7aebd02c9da 100644
--- a/test/core/end2end/tests/shutdown_finishes_calls.c
+++ b/test/core/end2end/tests/shutdown_finishes_calls.c
@@ -186,8 +186,8 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/simple_cacheable_request.c b/test/core/end2end/tests/simple_cacheable_request.c
index d0c292c33863dfe703841a5dc72d974d478ba081..cc0f89c422ea5b77ac8b971f386ae21d889b71a9 100644
--- a/test/core/end2end/tests/simple_cacheable_request.c
+++ b/test/core/end2end/tests/simple_cacheable_request.c
@@ -274,8 +274,8 @@ static void test_cacheable_request_response_with_metadata_and_payload(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/simple_delayed_request.c b/test/core/end2end/tests/simple_delayed_request.c
index c8b88def1fccf8df2a4611837e4a3e502cd76636..9e938f86a6cf1fdc6d19ba351874c7f9a7d50239 100644
--- a/test/core/end2end/tests/simple_delayed_request.c
+++ b/test/core/end2end/tests/simple_delayed_request.c
@@ -195,8 +195,8 @@ static void simple_delayed_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/simple_metadata.c b/test/core/end2end/tests/simple_metadata.c
index 367f0b7696def3645285497e190f4774f016018c..08679a588a29754d9adf00682352bc609c6da29a 100644
--- a/test/core/end2end/tests/simple_metadata.c
+++ b/test/core/end2end/tests/simple_metadata.c
@@ -266,8 +266,8 @@ static void test_request_response_with_metadata_and_payload(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/simple_request.c b/test/core/end2end/tests/simple_request.c
index 0f19fd0b0f345aef4e40f926266e92edb88d6bbd..45c717363bfb96351be099270736763431b8c81a 100644
--- a/test/core/end2end/tests/simple_request.c
+++ b/test/core/end2end/tests/simple_request.c
@@ -219,8 +219,8 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 }
diff --git a/test/core/end2end/tests/streaming_error_response.c b/test/core/end2end/tests/streaming_error_response.c
index 0946552271e2a719c21b33f0b83940a125a5f35d..e59675a655062089f0bb544298e9bda9d7499dcf 100644
--- a/test/core/end2end/tests/streaming_error_response.c
+++ b/test/core/end2end/tests/streaming_error_response.c
@@ -263,8 +263,8 @@ static void test(grpc_end2end_test_config config, bool request_status_early) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/trailing_metadata.c b/test/core/end2end/tests/trailing_metadata.c
index 78046261c3f43a887742dece06f5be036f0e0a5c..ca8eb6389e62e6f0f93810514ac9294b5a7c695a 100644
--- a/test/core/end2end/tests/trailing_metadata.c
+++ b/test/core/end2end/tests/trailing_metadata.c
@@ -276,8 +276,8 @@ static void test_request_response_with_metadata_and_payload(
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/write_buffering.c b/test/core/end2end/tests/write_buffering.c
index e937912d5f1c00781cd6d743775ae3e4c549c4ce..f8f2102e67a3ab31d078e8d45380cb848ebc005a 100644
--- a/test/core/end2end/tests/write_buffering.c
+++ b/test/core/end2end/tests/write_buffering.c
@@ -274,8 +274,8 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/write_buffering_at_end.c b/test/core/end2end/tests/write_buffering_at_end.c
index 42024cfa9bbf181fb2a1d32493d1151ab60e7784..2facd9c1a4a892e83dc299385d82027de6a34541 100644
--- a/test/core/end2end/tests/write_buffering_at_end.c
+++ b/test/core/end2end/tests/write_buffering_at_end.c
@@ -265,8 +265,8 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   grpc_metadata_array_destroy(&request_metadata_recv);
   grpc_call_details_destroy(&call_details);
 
-  grpc_call_destroy(c);
-  grpc_call_destroy(s);
+  grpc_call_unref(c);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/fling/client.c b/test/core/fling/client.c
index ecb73cfbdb22a5e565dea1159827b8877f2d9247..3c43f4311c3159bd2fb1d957df53c137f4799c66 100644
--- a/test/core/fling/client.c
+++ b/test/core/fling/client.c
@@ -99,7 +99,7 @@ static void step_ping_pong_request(void) {
                                                    (size_t)(op - ops),
                                                    (void *)1, NULL));
   grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
-  grpc_call_destroy(call);
+  grpc_call_unref(call);
   grpc_byte_buffer_destroy(response_payload_recv);
   call = NULL;
   GPR_TIMER_END("ping_pong", 1);
@@ -233,7 +233,7 @@ int main(int argc, char **argv) {
   grpc_profiler_stop();
 
   if (call) {
-    grpc_call_destroy(call);
+    grpc_call_unref(call);
   }
 
   grpc_channel_destroy(channel);
diff --git a/test/core/fling/server.c b/test/core/fling/server.c
index 7edff3d132938f7a2bb565fabf9944a17073b720..a927e9014ad286087dea76bc52da879d4bce83f9 100644
--- a/test/core/fling/server.c
+++ b/test/core/fling/server.c
@@ -301,7 +301,7 @@ int main(int argc, char **argv) {
             break;
           case FLING_SERVER_SEND_STATUS_FOR_STREAMING:
             /* Send status and close completed at server */
-            grpc_call_destroy(call);
+            grpc_call_unref(call);
             if (!shutdown_started) request_call();
             break;
           case FLING_SERVER_READ_FOR_UNARY:
@@ -314,7 +314,7 @@ int main(int argc, char **argv) {
             /* Finished unary call. */
             grpc_byte_buffer_destroy(payload_buffer);
             payload_buffer = NULL;
-            grpc_call_destroy(call);
+            grpc_call_unref(call);
             if (!shutdown_started) request_call();
             break;
         }
diff --git a/test/core/memory_usage/client.c b/test/core/memory_usage/client.c
index fcdc161ac926233b6d1c1059eea9ece8785079d5..ee68399988b9ae43ddd7549fb457dbbddb95a849 100644
--- a/test/core/memory_usage/client.c
+++ b/test/core/memory_usage/client.c
@@ -120,7 +120,7 @@ static void finish_ping_pong_request(int call_idx) {
   grpc_metadata_array_destroy(&calls[call_idx].initial_metadata_recv);
   grpc_metadata_array_destroy(&calls[call_idx].trailing_metadata_recv);
   grpc_slice_unref(calls[call_idx].details);
-  grpc_call_destroy(calls[call_idx].call);
+  grpc_call_unref(calls[call_idx].call);
   calls[call_idx].call = NULL;
 }
 
@@ -187,7 +187,7 @@ static struct grpc_memory_counters send_snapshot_request(int call_idx,
   grpc_byte_buffer_destroy(response_payload_recv);
   grpc_slice_unref(calls[call_idx].details);
   calls[call_idx].details = grpc_empty_slice();
-  grpc_call_destroy(calls[call_idx].call);
+  grpc_call_unref(calls[call_idx].call);
   calls[call_idx].call = NULL;
 
   return snapshot;
diff --git a/test/core/memory_usage/server.c b/test/core/memory_usage/server.c
index 44c5488014e80ac0d7e75c5249a1ed84d8cdf324..1c70f5eac0d60a332f9ff1f2ea45627564496938 100644
--- a/test/core/memory_usage/server.c
+++ b/test/core/memory_usage/server.c
@@ -286,7 +286,7 @@ int main(int argc, char **argv) {
           case FLING_SERVER_WAIT_FOR_DESTROY:
             break;
           case FLING_SERVER_SEND_STATUS_FLING_CALL:
-            grpc_call_destroy(s->call);
+            grpc_call_unref(s->call);
             grpc_call_details_destroy(&s->call_details);
             grpc_metadata_array_destroy(&s->initial_metadata_send);
             grpc_metadata_array_destroy(&s->request_metadata_recv);
@@ -304,7 +304,7 @@ int main(int argc, char **argv) {
           case FLING_SERVER_SEND_STATUS_SNAPSHOT:
             grpc_byte_buffer_destroy(payload_buffer);
             grpc_byte_buffer_destroy(terminal_buffer);
-            grpc_call_destroy(s->call);
+            grpc_call_unref(s->call);
             grpc_call_details_destroy(&s->call_details);
             grpc_metadata_array_destroy(&s->initial_metadata_send);
             grpc_metadata_array_destroy(&s->request_metadata_recv);
diff --git a/test/core/security/BUILD b/test/core/security/BUILD
index 8c63f9143d14a4d8f65e077dceb4d0fb78385aaa..a81e1d366b0926e3c79420034e063bb9562954c1 100644
--- a/test/core/security/BUILD
+++ b/test/core/security/BUILD
@@ -44,7 +44,8 @@ cc_library(
     srcs = ["oauth2_utils.c"],
     hdrs = ["oauth2_utils.h"],
     deps = ["//:grpc"],
-    copts = ['-std=c99']
+    copts = ['-std=c99'],
+    visibility = ["//test/cpp:__subpackages__"],
 )
 
 cc_test(
diff --git a/test/core/slice/BUILD b/test/core/slice/BUILD
index 4d64d0a8183d2bb805227531fa4f2742d7c75a03..18cf6f60af0bb92b5cde453968e060294927b5bb 100644
--- a/test/core/slice/BUILD
+++ b/test/core/slice/BUILD
@@ -47,12 +47,33 @@ cc_test(
 )
 
 cc_test(
-    name = "slice_buffer_test",
+    name = "slice_test",
+    srcs = ["slice_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "slice_string_helpers_test",
     srcs = ["slice_string_helpers_test.c"],
     deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
     copts = ['-std=c99']
 )
 
+cc_test(
+    name = "slice_buffer_test",
+    srcs = ["slice_buffer_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "slice_hash_table_test",
+    srcs = ["slice_hash_table_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
 cc_test(
     name = "b64_test",
     srcs = ["b64_test.c"],
diff --git a/test/core/slice/slice_hash_table_test.c b/test/core/slice/slice_hash_table_test.c
new file mode 100644
index 0000000000000000000000000000000000000000..67041b2d5c998c07d7b7e21938e30c405ff82547
--- /dev/null
+++ b/test/core/slice/slice_hash_table_test.c
@@ -0,0 +1,138 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/slice/slice_hash_table.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+#include "test/core/util/test_config.h"
+
+typedef struct {
+  char* key;
+  char* value;
+} test_entry;
+
+static void populate_entries(const test_entry* input, size_t num_entries,
+                             grpc_slice_hash_table_entry* output) {
+  for (size_t i = 0; i < num_entries; ++i) {
+    output[i].key = grpc_slice_from_copied_string(input[i].key);
+    output[i].value = gpr_strdup(input[i].value);
+  }
+}
+
+static void check_values(const test_entry* input, size_t num_entries,
+                         grpc_slice_hash_table* table) {
+  for (size_t i = 0; i < num_entries; ++i) {
+    grpc_slice key = grpc_slice_from_static_string(input[i].key);
+    char* actual = grpc_slice_hash_table_get(table, key);
+    GPR_ASSERT(actual != NULL);
+    GPR_ASSERT(strcmp(actual, input[i].value) == 0);
+    grpc_slice_unref(key);
+  }
+}
+
+static void check_non_existent_value(const char* key_string,
+                                     grpc_slice_hash_table* table) {
+  grpc_slice key = grpc_slice_from_static_string(key_string);
+  GPR_ASSERT(grpc_slice_hash_table_get(table, key) == NULL);
+  grpc_slice_unref(key);
+}
+
+static void destroy_string(grpc_exec_ctx* exec_ctx, void* value) {
+  gpr_free(value);
+}
+
+static void test_slice_hash_table() {
+  const test_entry test_entries[] = {
+      {"key_0", "value_0"},   {"key_1", "value_1"},   {"key_2", "value_2"},
+      {"key_3", "value_3"},   {"key_4", "value_4"},   {"key_5", "value_5"},
+      {"key_6", "value_6"},   {"key_7", "value_7"},   {"key_8", "value_8"},
+      {"key_9", "value_9"},   {"key_10", "value_10"}, {"key_11", "value_11"},
+      {"key_12", "value_12"}, {"key_13", "value_13"}, {"key_14", "value_14"},
+      {"key_15", "value_15"}, {"key_16", "value_16"}, {"key_17", "value_17"},
+      {"key_18", "value_18"}, {"key_19", "value_19"}, {"key_20", "value_20"},
+      {"key_21", "value_21"}, {"key_22", "value_22"}, {"key_23", "value_23"},
+      {"key_24", "value_24"}, {"key_25", "value_25"}, {"key_26", "value_26"},
+      {"key_27", "value_27"}, {"key_28", "value_28"}, {"key_29", "value_29"},
+      {"key_30", "value_30"}, {"key_31", "value_31"}, {"key_32", "value_32"},
+      {"key_33", "value_33"}, {"key_34", "value_34"}, {"key_35", "value_35"},
+      {"key_36", "value_36"}, {"key_37", "value_37"}, {"key_38", "value_38"},
+      {"key_39", "value_39"}, {"key_40", "value_40"}, {"key_41", "value_41"},
+      {"key_42", "value_42"}, {"key_43", "value_43"}, {"key_44", "value_44"},
+      {"key_45", "value_45"}, {"key_46", "value_46"}, {"key_47", "value_47"},
+      {"key_48", "value_48"}, {"key_49", "value_49"}, {"key_50", "value_50"},
+      {"key_51", "value_51"}, {"key_52", "value_52"}, {"key_53", "value_53"},
+      {"key_54", "value_54"}, {"key_55", "value_55"}, {"key_56", "value_56"},
+      {"key_57", "value_57"}, {"key_58", "value_58"}, {"key_59", "value_59"},
+      {"key_60", "value_60"}, {"key_61", "value_61"}, {"key_62", "value_62"},
+      {"key_63", "value_63"}, {"key_64", "value_64"}, {"key_65", "value_65"},
+      {"key_66", "value_66"}, {"key_67", "value_67"}, {"key_68", "value_68"},
+      {"key_69", "value_69"}, {"key_70", "value_70"}, {"key_71", "value_71"},
+      {"key_72", "value_72"}, {"key_73", "value_73"}, {"key_74", "value_74"},
+      {"key_75", "value_75"}, {"key_76", "value_76"}, {"key_77", "value_77"},
+      {"key_78", "value_78"}, {"key_79", "value_79"}, {"key_80", "value_80"},
+      {"key_81", "value_81"}, {"key_82", "value_82"}, {"key_83", "value_83"},
+      {"key_84", "value_84"}, {"key_85", "value_85"}, {"key_86", "value_86"},
+      {"key_87", "value_87"}, {"key_88", "value_88"}, {"key_89", "value_89"},
+      {"key_90", "value_90"}, {"key_91", "value_91"}, {"key_92", "value_92"},
+      {"key_93", "value_93"}, {"key_94", "value_94"}, {"key_95", "value_95"},
+      {"key_96", "value_96"}, {"key_97", "value_97"}, {"key_98", "value_98"},
+      {"key_99", "value_99"},
+  };
+  const size_t num_entries = GPR_ARRAY_SIZE(test_entries);
+  // Construct table.
+  grpc_slice_hash_table_entry* entries =
+      gpr_zalloc(sizeof(*entries) * num_entries);
+  populate_entries(test_entries, num_entries, entries);
+  grpc_slice_hash_table* table =
+      grpc_slice_hash_table_create(num_entries, entries, destroy_string);
+  gpr_free(entries);
+  // Check contents of table.
+  check_values(test_entries, num_entries, table);
+  check_non_existent_value("XX", table);
+  // Clean up.
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_slice_hash_table_unref(&exec_ctx, table);
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  test_slice_hash_table();
+  return 0;
+}
diff --git a/test/core/support/mpscq_test.c b/test/core/support/mpscq_test.c
index 491eb9148be07234afa3be467e60e156d8739937..695066c68e3918d2414ba16026e5bb0a1312e55e 100644
--- a/test/core/support/mpscq_test.c
+++ b/test/core/support/mpscq_test.c
@@ -76,7 +76,7 @@ typedef struct {
   gpr_event *start;
 } thd_args;
 
-#define THREAD_ITERATIONS 100000
+#define THREAD_ITERATIONS 10000
 
 static void test_thread(void *args) {
   thd_args *a = args;
diff --git a/test/core/support/time_test.c b/test/core/support/time_test.c
index 4cb36a788c1647978af735ec928f6186e8815fe2..00d0b765036647f7bfe5ba66a53636386ee5a4b4 100644
--- a/test/core/support/time_test.c
+++ b/test/core/support/time_test.c
@@ -47,32 +47,17 @@ static void to_fp(void *arg, const char *buf, size_t len) {
   fwrite(buf, 1, len, (FILE *)arg);
 }
 
-/* Convert gpr_uintmax x to ascii base b (2..16), and write with
-   (*writer)(arg, ...), zero padding to "chars" digits).  */
-static void u_to_s(uintmax_t x, unsigned base, int chars,
-                   void (*writer)(void *arg, const char *buf, size_t len),
-                   void *arg) {
-  char buf[64];
-  char *p = buf + sizeof(buf);
-  do {
-    *--p = "0123456789abcdef"[x % base];
-    x /= base;
-    chars--;
-  } while (x != 0 || chars > 0);
-  (*writer)(arg, p, (size_t)(buf + sizeof(buf) - p));
-}
-
 /* Convert gpr_intmax x to ascii base b (2..16), and write with
    (*writer)(arg, ...), zero padding to "chars" digits).  */
-static void i_to_s(intmax_t x, unsigned base, int chars,
+static void i_to_s(intmax_t x, int base, int chars,
                    void (*writer)(void *arg, const char *buf, size_t len),
                    void *arg) {
-  if (x < 0) {
-    (*writer)(arg, "-", 1);
-    u_to_s((uintmax_t)-x, base, chars - 1, writer, arg);
-  } else {
-    u_to_s((uintmax_t)x, base, chars, writer, arg);
-  }
+  char buf[64];
+  char fmt[32];
+  GPR_ASSERT(base == 16 || base == 10);
+  sprintf(fmt, "%%0%d%s", chars, base == 16 ? PRIxMAX : PRIdMAX);
+  sprintf(buf, fmt, x);
+  (*writer)(arg, buf, strlen(buf));
 }
 
 /* Convert ts to ascii, and write with (*writer)(arg, ...).  */
diff --git a/test/core/surface/lame_client_test.c b/test/core/surface/lame_client_test.c
index 6c14a5dcdfe488eb3603a7de681d87da7bd1563e..ba0cee07d361dca1d94f389fd213cfadea402e5f 100644
--- a/test/core/surface/lame_client_test.c
+++ b/test/core/surface/lame_client_test.c
@@ -156,7 +156,7 @@ int main(int argc, char **argv) {
   GPR_ASSERT(strcmp(peer, "lampoon:national") == 0);
   gpr_free(peer);
 
-  grpc_call_destroy(call);
+  grpc_call_unref(call);
   grpc_channel_destroy(chan);
   cq_verifier_destroy(cqv);
   grpc_completion_queue_destroy(cq);
diff --git a/test/cpp/grpclb/grpclb_api_test.cc b/test/cpp/grpclb/grpclb_api_test.cc
index d9df2bb6735b6a4767d3fd899cd70f337f53f4b8..0b569f1415704c5c217b4d3f07323e06e156124a 100644
--- a/test/cpp/grpclb/grpclb_api_test.cc
+++ b/test/cpp/grpclb/grpclb_api_test.cc
@@ -106,11 +106,13 @@ TEST_F(GrpclbTest, ParseResponseServerList) {
   auto* server = serverlist->add_servers();
   server->set_ip_address(Ip4ToPackedString("127.0.0.1"));
   server->set_port(12345);
-  server->set_drop_request(true);
+  server->set_drop_for_rate_limiting(true);
+  server->set_drop_for_load_balancing(false);
   server = response.mutable_server_list()->add_servers();
   server->set_ip_address(Ip4ToPackedString("10.0.0.1"));
   server->set_port(54321);
-  server->set_drop_request(false);
+  server->set_drop_for_rate_limiting(false);
+  server->set_drop_for_load_balancing(true);
   auto* expiration_interval = serverlist->mutable_expiration_interval();
   expiration_interval->set_seconds(888);
   expiration_interval->set_nanos(999);
@@ -125,12 +127,14 @@ TEST_F(GrpclbTest, ParseResponseServerList) {
   EXPECT_EQ(PackedStringToIp(c_serverlist->servers[0]->ip_address),
             "127.0.0.1");
   EXPECT_EQ(c_serverlist->servers[0]->port, 12345);
-  EXPECT_TRUE(c_serverlist->servers[0]->drop_request);
+  EXPECT_TRUE(c_serverlist->servers[0]->drop_for_rate_limiting);
+  EXPECT_FALSE(c_serverlist->servers[0]->drop_for_load_balancing);
   EXPECT_TRUE(c_serverlist->servers[1]->has_ip_address);
 
   EXPECT_EQ(PackedStringToIp(c_serverlist->servers[1]->ip_address), "10.0.0.1");
   EXPECT_EQ(c_serverlist->servers[1]->port, 54321);
-  EXPECT_FALSE(c_serverlist->servers[1]->drop_request);
+  EXPECT_FALSE(c_serverlist->servers[1]->drop_for_rate_limiting);
+  EXPECT_TRUE(c_serverlist->servers[1]->drop_for_load_balancing);
 
   EXPECT_TRUE(c_serverlist->expiration_interval.has_seconds);
   EXPECT_EQ(c_serverlist->expiration_interval.seconds, 888);
diff --git a/test/cpp/grpclb/grpclb_test.cc b/test/cpp/grpclb/grpclb_test.cc
index a80431f46a1a2fd6b145f9337aa58bf6098ed18d..a002c7f77dce7dde2f9d879a07cd9d2c8f3c6f12 100644
--- a/test/cpp/grpclb/grpclb_test.cc
+++ b/test/cpp/grpclb/grpclb_test.cc
@@ -310,7 +310,7 @@ static void start_lb_server(server_fixture *sf, int *ports, size_t nports,
   gpr_log(GPR_INFO, "LB Server[%s](%s) after tag 204. All done. LB server out",
           sf->servers_hostport, sf->balancer_name);
 
-  grpc_call_destroy(s);
+  grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
 
@@ -457,7 +457,7 @@ static void start_backend_server(server_fixture *sf) {
     gpr_log(GPR_INFO, "Server[%s] DONE. After servicing %d calls",
             sf->servers_hostport, sf->num_calls_serviced);
 
-    grpc_call_destroy(s);
+    grpc_call_unref(s);
     cq_verifier_destroy(cqv);
     grpc_metadata_array_destroy(&request_metadata_recv);
     grpc_call_details_destroy(&call_details);
@@ -557,7 +557,7 @@ static void perform_request(client_fixture *cf) {
   peer = grpc_call_get_peer(c);
   gpr_log(GPR_INFO, "Client DONE WITH SERVER %s ", peer);
 
-  grpc_call_destroy(c);
+  grpc_call_unref(c);
 
   cq_verify_empty_timeout(cqv, 1 /* seconds */);
   cq_verifier_destroy(cqv);
@@ -573,34 +573,51 @@ static void perform_request(client_fixture *cf) {
 static void setup_client(const server_fixture *lb_server,
                          const server_fixture *backends, client_fixture *cf) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  char *lb_uri;
-  // The grpclb LB policy will be automatically selected by virtue of
-  // the fact that the returned addresses are balancer addresses.
-  gpr_asprintf(&lb_uri, "test:///%s?lb_enabled=1&balancer_names=%s",
-               lb_server->servers_hostport, lb_server->balancer_name);
-
-  grpc_arg expected_target_arg;
-  expected_target_arg.type = GRPC_ARG_STRING;
-  expected_target_arg.key =
-      const_cast<char *>(GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS);
 
   char *expected_target_names = NULL;
   const char *backends_name = lb_server->servers_hostport;
   gpr_asprintf(&expected_target_names, "%s;%s", backends_name, BALANCERS_NAME);
 
-  expected_target_arg.value.string = const_cast<char *>(expected_target_names);
+  grpc_fake_resolver_response_generator *response_generator =
+      grpc_fake_resolver_response_generator_create();
+
+  grpc_lb_addresses *addresses = grpc_lb_addresses_create(1, NULL);
+  char *lb_uri_str;
+  gpr_asprintf(&lb_uri_str, "ipv4:%s", lb_server->servers_hostport);
+  grpc_uri *lb_uri = grpc_uri_parse(&exec_ctx, lb_uri_str, true);
+  GPR_ASSERT(lb_uri != NULL);
+  grpc_lb_addresses_set_address_from_uri(addresses, 0, lb_uri, true,
+                                         lb_server->balancer_name, NULL);
+  grpc_uri_destroy(lb_uri);
+  gpr_free(lb_uri_str);
+
+  gpr_asprintf(&cf->server_uri, "test:///%s", lb_server->servers_hostport);
+  const grpc_arg fake_addresses =
+      grpc_lb_addresses_create_channel_arg(addresses);
+  grpc_channel_args *fake_result =
+      grpc_channel_args_copy_and_add(NULL, &fake_addresses, 1);
+  grpc_lb_addresses_destroy(&exec_ctx, addresses);
+
+  const grpc_arg new_args[] = {
+      grpc_fake_transport_expected_targets_arg(expected_target_names),
+      grpc_fake_resolver_response_generator_arg(response_generator)};
+
   grpc_channel_args *args =
-      grpc_channel_args_copy_and_add(NULL, &expected_target_arg, 1);
+      grpc_channel_args_copy_and_add(NULL, new_args, GPR_ARRAY_SIZE(new_args));
   gpr_free(expected_target_names);
 
   cf->cq = grpc_completion_queue_create_for_next(NULL);
-  cf->server_uri = lb_uri;
   grpc_channel_credentials *fake_creds =
       grpc_fake_transport_security_credentials_create();
   cf->client =
       grpc_secure_channel_create(fake_creds, cf->server_uri, args, NULL);
+  grpc_fake_resolver_response_generator_set_response(
+      &exec_ctx, response_generator, fake_result);
+  grpc_channel_args_destroy(&exec_ctx, fake_result);
   grpc_channel_credentials_unref(&exec_ctx, fake_creds);
   grpc_channel_args_destroy(&exec_ctx, args);
+  grpc_fake_resolver_response_generator_unref(response_generator);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void teardown_client(client_fixture *cf) {
@@ -787,8 +804,8 @@ TEST(GrpclbTest, InvalidAddressInServerlist) {}
 
 int main(int argc, char **argv) {
   ::testing::InitGoogleTest(&argc, argv);
-  grpc_test_init(argc, argv);
   grpc_fake_resolver_init();
+  grpc_test_init(argc, argv);
   grpc_init();
   const auto result = RUN_ALL_TESTS();
   grpc_shutdown();
diff --git a/test/cpp/interop/BUILD b/test/cpp/interop/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..1a3e8d916fa243f1e79509d5b85ee6121d180687
--- /dev/null
+++ b/test/cpp/interop/BUILD
@@ -0,0 +1,90 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_library(
+    name = "server_helper_lib",
+    srcs = [
+        "server_helper.cc",
+    ],
+    hdrs = [
+        "server_helper.h",
+    ],
+    deps = [
+        "//test/cpp/util:test_util",
+        "//external:gflags",
+    ],
+)
+
+cc_binary(
+    name = "interop_server",
+    srcs = [
+        "interop_server.cc",
+        "interop_server_bootstrap.cc",
+    ],
+    deps = [
+        ":server_helper_lib",
+        "//:grpc++",
+        "//src/proto/grpc/testing:empty_proto",
+        "//src/proto/grpc/testing:messages_proto",
+        "//src/proto/grpc/testing:test_proto",
+        "//test/cpp/util:test_config",
+    ],
+)
+
+cc_library(
+    name = "client_helper_lib",
+    srcs = [
+        "client_helper.cc",
+        "interop_client.cc",
+    ],
+    hdrs = [
+        "client_helper.h",
+        "interop_client.h",
+    ],
+    deps = [
+        "//test/cpp/util:test_util",
+        "//src/proto/grpc/testing:empty_proto",
+        "//src/proto/grpc/testing:messages_proto",
+        "//src/proto/grpc/testing:test_proto",
+        "//test/core/security:oauth2_utils",
+        "//test/cpp/util:test_config",
+    ],
+)
+
+cc_binary(
+    name = "interop_client",
+    srcs = [
+        "client.cc",
+    ],
+    deps = [
+        ":client_helper_lib",
+    ],
+)
diff --git a/test/cpp/interop/http2_client.cc b/test/cpp/interop/http2_client.cc
index 38a437f39f8a166ed95c3540f356385d43dbae6e..2109e346164cd3c7d8553274ae18ba793c5a3544 100644
--- a/test/cpp/interop/http2_client.cc
+++ b/test/cpp/interop/http2_client.cc
@@ -108,7 +108,7 @@ bool Http2Client::DoRstAfterData() {
 
   SimpleResponse response;
   AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::INTERNAL);
-  GPR_ASSERT(response.has_payload());  // data should be received
+  // There is no guarantee that data would be received.
 
   gpr_log(GPR_DEBUG, "Done testing reset stream after data");
   return true;
diff --git a/test/cpp/microbenchmarks/bm_call_create.cc b/test/cpp/microbenchmarks/bm_call_create.cc
index 8373eead618a30d34476a3c99023a316604b7d7a..c91219e98c8ce3467f9e7d5429f7201feb8843f5 100644
--- a/test/cpp/microbenchmarks/bm_call_create.cc
+++ b/test/cpp/microbenchmarks/bm_call_create.cc
@@ -68,10 +68,12 @@ auto &force_library_initialization = Library::get();
 void BM_Zalloc(benchmark::State &state) {
   // speed of light for call creation is zalloc, so benchmark a few interesting
   // sizes
+  TrackCounters track_counters;
   size_t sz = state.range(0);
   while (state.KeepRunning()) {
     gpr_free(gpr_zalloc(sz));
   }
+  track_counters.Finish(state);
 }
 BENCHMARK(BM_Zalloc)
     ->Arg(64)
@@ -124,7 +126,7 @@ static void BM_CallCreateDestroy(benchmark::State &state) {
   void *method_hdl =
       grpc_channel_register_call(fixture.channel(), "/foo/bar", NULL, NULL);
   while (state.KeepRunning()) {
-    grpc_call_destroy(grpc_channel_create_registered_call(
+    grpc_call_unref(grpc_channel_create_registered_call(
         fixture.channel(), NULL, GRPC_PROPAGATE_DEFAULTS, cq, method_hdl,
         deadline, NULL));
   }
@@ -166,6 +168,165 @@ static void BM_LameChannelCallCreateCpp(benchmark::State &state) {
 }
 BENCHMARK(BM_LameChannelCallCreateCpp);
 
+static void do_nothing(void *ignored) {}
+
+static void BM_LameChannelCallCreateCore(benchmark::State &state) {
+  TrackCounters track_counters;
+
+  grpc_channel *channel;
+  grpc_completion_queue *cq;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_byte_buffer *response_payload_recv = NULL;
+  grpc_status_code status;
+  grpc_slice details;
+  grpc::testing::EchoRequest send_request;
+  grpc_slice send_request_slice =
+      grpc_slice_new(&send_request, sizeof(send_request), do_nothing);
+
+  channel = grpc_lame_client_channel_create(
+      "localhost:1234", GRPC_STATUS_UNAUTHENTICATED, "blah");
+  cq = grpc_completion_queue_create_for_next(NULL);
+  void *rc = grpc_channel_register_call(
+      channel, "/grpc.testing.EchoTestService/Echo", NULL, NULL);
+  while (state.KeepRunning()) {
+    GPR_TIMER_SCOPE("BenchmarkCycle", 0);
+    grpc_call *call = grpc_channel_create_registered_call(
+        channel, NULL, GRPC_PROPAGATE_DEFAULTS, cq, rc,
+        gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+    grpc_metadata_array_init(&initial_metadata_recv);
+    grpc_metadata_array_init(&trailing_metadata_recv);
+    grpc_byte_buffer *request_payload_send =
+        grpc_raw_byte_buffer_create(&send_request_slice, 1);
+
+    // Fill in call ops
+    grpc_op ops[6];
+    memset(ops, 0, sizeof(ops));
+    grpc_op *op = ops;
+    op->op = GRPC_OP_SEND_INITIAL_METADATA;
+    op->data.send_initial_metadata.count = 0;
+    op++;
+    op->op = GRPC_OP_SEND_MESSAGE;
+    op->data.send_message.send_message = request_payload_send;
+    op++;
+    op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+    op++;
+    op->op = GRPC_OP_RECV_INITIAL_METADATA;
+    op->data.recv_initial_metadata.recv_initial_metadata =
+        &initial_metadata_recv;
+    op++;
+    op->op = GRPC_OP_RECV_MESSAGE;
+    op->data.recv_message.recv_message = &response_payload_recv;
+    op++;
+    op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+    op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+    op->data.recv_status_on_client.status = &status;
+    op->data.recv_status_on_client.status_details = &details;
+    op++;
+
+    GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call, ops,
+                                                     (size_t)(op - ops),
+                                                     (void *)1, NULL));
+    grpc_event ev = grpc_completion_queue_next(
+        cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+    GPR_ASSERT(ev.type != GRPC_QUEUE_SHUTDOWN);
+    GPR_ASSERT(ev.success != 0);
+    grpc_call_unref(call);
+    grpc_byte_buffer_destroy(request_payload_send);
+    grpc_byte_buffer_destroy(response_payload_recv);
+    grpc_metadata_array_destroy(&initial_metadata_recv);
+    grpc_metadata_array_destroy(&trailing_metadata_recv);
+  }
+  grpc_channel_destroy(channel);
+  grpc_completion_queue_destroy(cq);
+  grpc_slice_unref(send_request_slice);
+  track_counters.Finish(state);
+}
+BENCHMARK(BM_LameChannelCallCreateCore);
+
+static void BM_LameChannelCallCreateCoreSeparateBatch(benchmark::State &state) {
+  TrackCounters track_counters;
+
+  grpc_channel *channel;
+  grpc_completion_queue *cq;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_byte_buffer *response_payload_recv = NULL;
+  grpc_status_code status;
+  grpc_slice details;
+  grpc::testing::EchoRequest send_request;
+  grpc_slice send_request_slice =
+      grpc_slice_new(&send_request, sizeof(send_request), do_nothing);
+
+  channel = grpc_lame_client_channel_create(
+      "localhost:1234", GRPC_STATUS_UNAUTHENTICATED, "blah");
+  cq = grpc_completion_queue_create_for_next(NULL);
+  void *rc = grpc_channel_register_call(
+      channel, "/grpc.testing.EchoTestService/Echo", NULL, NULL);
+  while (state.KeepRunning()) {
+    GPR_TIMER_SCOPE("BenchmarkCycle", 0);
+    grpc_call *call = grpc_channel_create_registered_call(
+        channel, NULL, GRPC_PROPAGATE_DEFAULTS, cq, rc,
+        gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+    grpc_metadata_array_init(&initial_metadata_recv);
+    grpc_metadata_array_init(&trailing_metadata_recv);
+    grpc_byte_buffer *request_payload_send =
+        grpc_raw_byte_buffer_create(&send_request_slice, 1);
+
+    // Fill in call ops
+    grpc_op ops[3];
+    memset(ops, 0, sizeof(ops));
+    grpc_op *op = ops;
+    op->op = GRPC_OP_SEND_INITIAL_METADATA;
+    op->data.send_initial_metadata.count = 0;
+    op++;
+    op->op = GRPC_OP_SEND_MESSAGE;
+    op->data.send_message.send_message = request_payload_send;
+    op++;
+    op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+    op++;
+    GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call, ops,
+                                                     (size_t)(op - ops),
+                                                     (void *)0, NULL));
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_RECV_INITIAL_METADATA;
+    op->data.recv_initial_metadata.recv_initial_metadata =
+        &initial_metadata_recv;
+    op++;
+    op->op = GRPC_OP_RECV_MESSAGE;
+    op->data.recv_message.recv_message = &response_payload_recv;
+    op++;
+    op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+    op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+    op->data.recv_status_on_client.status = &status;
+    op->data.recv_status_on_client.status_details = &details;
+    op++;
+
+    GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call, ops,
+                                                     (size_t)(op - ops),
+                                                     (void *)1, NULL));
+    grpc_event ev = grpc_completion_queue_next(
+        cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+    GPR_ASSERT(ev.type != GRPC_QUEUE_SHUTDOWN);
+    GPR_ASSERT(ev.success == 0);
+    ev = grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME),
+                                    NULL);
+    GPR_ASSERT(ev.type != GRPC_QUEUE_SHUTDOWN);
+    GPR_ASSERT(ev.success != 0);
+    grpc_call_unref(call);
+    grpc_byte_buffer_destroy(request_payload_send);
+    grpc_byte_buffer_destroy(response_payload_recv);
+    grpc_metadata_array_destroy(&initial_metadata_recv);
+    grpc_metadata_array_destroy(&trailing_metadata_recv);
+  }
+  grpc_channel_destroy(channel);
+  grpc_completion_queue_destroy(cq);
+  grpc_slice_unref(send_request_slice);
+  track_counters.Finish(state);
+}
+BENCHMARK(BM_LameChannelCallCreateCoreSeparateBatch);
+
 static void FilterDestroy(grpc_exec_ctx *exec_ctx, void *arg,
                           grpc_error *error) {
   gpr_free(arg);
@@ -560,7 +721,7 @@ static const grpc_channel_filter isolated_call_filter = {
     GetPeer,
     GetChannelInfo,
     "isolated_call_filter"};
-}
+}  // namespace isolated_call_filter
 
 class IsolatedCallFixture : public TrackCounters {
  public:
@@ -600,7 +761,7 @@ static void BM_IsolatedCall_NoOp(benchmark::State &state) {
       grpc_channel_register_call(fixture.channel(), "/foo/bar", NULL, NULL);
   while (state.KeepRunning()) {
     GPR_TIMER_SCOPE("BenchmarkCycle", 0);
-    grpc_call_destroy(grpc_channel_create_registered_call(
+    grpc_call_unref(grpc_channel_create_registered_call(
         fixture.channel(), nullptr, GRPC_PROPAGATE_DEFAULTS, fixture.cq(),
         method_hdl, deadline, NULL));
   }
@@ -645,7 +806,7 @@ static void BM_IsolatedCall_Unary(benchmark::State &state) {
     grpc_call_start_batch(call, ops, 6, tag(1), NULL);
     grpc_completion_queue_next(fixture.cq(),
                                gpr_inf_future(GPR_CLOCK_MONOTONIC), NULL);
-    grpc_call_destroy(call);
+    grpc_call_unref(call);
   }
   fixture.Finish(state);
   grpc_metadata_array_destroy(&recv_initial_metadata);
@@ -686,7 +847,7 @@ static void BM_IsolatedCall_StreamingSend(benchmark::State &state) {
     grpc_completion_queue_next(fixture.cq(),
                                gpr_inf_future(GPR_CLOCK_MONOTONIC), NULL);
   }
-  grpc_call_destroy(call);
+  grpc_call_unref(call);
   fixture.Finish(state);
   grpc_metadata_array_destroy(&recv_initial_metadata);
   grpc_metadata_array_destroy(&recv_trailing_metadata);
diff --git a/test/cpp/microbenchmarks/helpers.cc b/test/cpp/microbenchmarks/helpers.cc
index d277c5984cdab5f398960b2eda5b37e60be248f3..6550742453a77674ec0fe74cb5c1049573846b5c 100644
--- a/test/cpp/microbenchmarks/helpers.cc
+++ b/test/cpp/microbenchmarks/helpers.cc
@@ -57,6 +57,10 @@ void TrackCounters::AddToLabel(std::ostream &out, benchmark::State &state) {
       << ((double)(gpr_atm_no_barrier_load(&gpr_counter_atm_add) -
                    atm_add_at_start_) /
           (double)state.iterations())
+      << " nows/iter:"
+      << ((double)(gpr_atm_no_barrier_load(&gpr_now_call_count) -
+                   now_calls_at_start_) /
+          (double)state.iterations())
       << " allocs/iter:"
       << ((double)(counters_at_end.total_allocs_absolute -
                    counters_at_start_.total_allocs_absolute) /
diff --git a/test/cpp/microbenchmarks/helpers.h b/test/cpp/microbenchmarks/helpers.h
index 49ed517b1d75bda3cf6bf9c1055fc04782d86efd..7360a1c9f267deffeceb2581a67845a18a673f87 100644
--- a/test/cpp/microbenchmarks/helpers.h
+++ b/test/cpp/microbenchmarks/helpers.h
@@ -72,6 +72,7 @@ class Library {
 extern "C" gpr_atm gpr_mu_locks;
 extern "C" gpr_atm gpr_counter_atm_cas;
 extern "C" gpr_atm gpr_counter_atm_add;
+extern "C" gpr_atm gpr_now_call_count;
 #endif
 
 class TrackCounters {
@@ -86,6 +87,8 @@ class TrackCounters {
       gpr_atm_no_barrier_load(&gpr_counter_atm_cas);
   const size_t atm_add_at_start_ =
       gpr_atm_no_barrier_load(&gpr_counter_atm_add);
+  const size_t now_calls_at_start_ =
+      gpr_atm_no_barrier_load(&gpr_now_call_count);
   grpc_memory_counters counters_at_start_ = grpc_memory_counters_snapshot();
 #endif
 };
diff --git a/test/cpp/qps/client_sync.cc b/test/cpp/qps/client_sync.cc
index a020adde511dd7498e56414b3108ab807f057f26..f8ce2cccbea6a88f3f5af94c32980cb7b11a29bb 100644
--- a/test/cpp/qps/client_sync.cc
+++ b/test/cpp/qps/client_sync.cc
@@ -153,16 +153,22 @@ class SynchronousStreamingClient final : public SynchronousClient {
     StartThreads(num_threads_);
   }
   ~SynchronousStreamingClient() {
+    std::vector<std::thread> cleanup_threads;
     for (size_t i = 0; i < num_threads_; i++) {
-      auto stream = &stream_[i];
-      if (*stream) {
-        (*stream)->WritesDone();
-        Status s = (*stream)->Finish();
-        if (!s.ok()) {
-          gpr_log(GPR_ERROR, "Stream %" PRIuPTR " received an error %s", i,
-                  s.error_message().c_str());
+      cleanup_threads.emplace_back([this, i]() {
+        auto stream = &stream_[i];
+        if (*stream) {
+          (*stream)->WritesDone();
+          Status s = (*stream)->Finish();
+          if (!s.ok()) {
+            gpr_log(GPR_ERROR, "Stream %" PRIuPTR " received an error %s", i,
+                    s.error_message().c_str());
+          }
         }
-      }
+      });
+    }
+    for (size_t i = 0; i < num_threads_; i++) {
+      cleanup_threads[i].join();
     }
   }
 
@@ -179,6 +185,8 @@ class SynchronousStreamingClient final : public SynchronousClient {
       if ((messages_per_stream_ != 0) &&
           (++messages_issued_[thread_idx] < messages_per_stream_)) {
         return true;
+      } else if (messages_per_stream_ == 0) {
+        return true;
       } else {
         // Fall through to the below resetting code after finish
       }
diff --git a/test/cpp/util/BUILD b/test/cpp/util/BUILD
index 38f804ffd401fe8205a6ac1c2ffb675b1efeffa8..c83f89eb9066c8a533c982397b1489af01e2cda2 100644
--- a/test/cpp/util/BUILD
+++ b/test/cpp/util/BUILD
@@ -29,6 +29,15 @@
 
 licenses(["notice"])  # 3-clause BSD
 
+# The following builds a shared-object to confirm that grpc++_unsecure
+# builds properly. Build-only is sufficient here
+cc_binary(
+    name = "testso.so",
+    srcs = [],
+    deps = ["//:grpc++_unsecure"],
+    linkshared = 1,
+)
+
 cc_library(
     name = "test_config",
     srcs = [
diff --git a/third_party/cares/cares.BUILD b/third_party/cares/cares.BUILD
index 48096aa0551fd9aa5b6032f4d28a556e2b1df9e1..3583720ef3dc29f2cb573f591b1c4ea1898f1886 100644
--- a/third_party/cares/cares.BUILD
+++ b/third_party/cares/cares.BUILD
@@ -1,3 +1,8 @@
+config_setting(
+    name = "darwin",
+    values = {"cpu": "darwin"},
+)
+
 cc_library(
     name = "ares",
     srcs = [
@@ -53,7 +58,6 @@ cc_library(
     ],
     hdrs = [
         "ares_build.h",
-        "config_linux/ares_config.h",
         "cares/ares.h",
         "cares/ares_data.h",
         "cares/ares_dns.h",
@@ -75,12 +79,17 @@ cc_library(
         "cares/bitncmp.h",
         "cares/config-win32.h",
         "cares/setup_once.h",
-    ],
+    ] + select({
+        ":darwin": ["config_darwin/ares_config.h"],
+        "//conditions:default": ["config_linux/ares_config.h"],
+    }),
     includes = [
         ".",
-        "config_linux",
-        "cares",
-    ],
+        "cares"
+    ] + select({
+        ":darwin": ["config_darwin"],
+        "//conditions:default": ["config_linux"],
+    }),
     linkstatic = 1,
     visibility = [
         "//visibility:public",
diff --git a/third_party/cares/config_freebsd/ares_config.h b/third_party/cares/config_freebsd/ares_config.h
new file mode 100644
index 0000000000000000000000000000000000000000..605db129e2f40eb626bc6fe35fea0c48d07f4c9e
--- /dev/null
+++ b/third_party/cares/config_freebsd/ares_config.h
@@ -0,0 +1,502 @@
+/* ares_config.h.  Generated from ares_config.h.in by configure.  */
+/* ares_config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* Defined for build that exposes internal static functions for testing. */
+/* #undef CARES_EXPOSE_STATICS */
+
+/* Defined for build with symbol hiding. */
+#define CARES_SYMBOL_HIDING 1
+
+/* Definition to make a library symbol externally visible. */
+#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((__visibility__ ("default")))
+
+/* Use resolver library to configure cares */
+/* #undef CARES_USE_LIBRESOLV */
+
+/* if a /etc/inet dir is being used */
+/* #undef ETC_INET */
+
+/* Define to the type of arg 2 for gethostname. */
+#define GETHOSTNAME_TYPE_ARG2 size_t
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 size_t
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 int
+
+/* Specifies the number of arguments to getservbyport_r */
+#define GETSERVBYPORT_R_ARGS 6
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+#define GETSERVBYPORT_R_BUFSIZE 4096
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#define HAVE_ARPA_NAMESER_COMPAT_H 1
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+#define HAVE_CLOCK_GETTIME_MONOTONIC 1
+
+/* Define to 1 if you have the closesocket function. */
+/* #undef HAVE_CLOSESOCKET */
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* define if the compiler supports basic C++11 syntax */
+#define HAVE_CXX11 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+#define HAVE_GETADDRINFO_THREADSAFE 1
+
+/* Define to 1 if you have the getenv function. */
+#define HAVE_GETENV 1
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+#define HAVE_GETSERVBYPORT_R 1
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have a IPv6 capable working inet_net_pton function. */
+#define HAVE_INET_NET_PTON 1
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+/* #undef HAVE_IOCTLSOCKET */
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+   */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+/* #undef HAVE_IOCTLSOCKET_FIONBIO */
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#define HAVE_IOCTL_SIOCGIFADDR 1
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+/* #undef HAVE_MALLOC_H */
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+#define HAVE_MSG_NOSIGNAL 1
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+/* #undef HAVE_STROPTS_H */
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the winsock2.h header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to 1 if you have the winsock.h header file. */
+/* #undef HAVE_WINSOCK_H */
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+/* #undef HAVE_WS2TCPIP_H */
+
+/* Define to the sub-directory where libtool stores uninstalled libraries. */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+/* #undef NEED_REENTRANT */
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* cpu-machine-OS */
+#define OS "amd64-unknown-freebsd10.3"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares -"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "-"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type qualifier pointed by arg 5 for recvfrom. */
+#define RECVFROM_QUAL_ARG5 
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 socklen_t
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV ssize_t
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV ssize_t
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV ssize_t
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "-"
+
+/* Define to avoid automatic inclusion of winsock.h */
+/* #undef WIN32_LEAN_AND_MEAN */
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* #  undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* #  undef _ALL_SOURCE */
+#endif
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+/* #undef in_addr_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
diff --git a/third_party/protobuf b/third_party/protobuf
index 4a0dd03e52e09332c8fd0f8f26a8e0ae9f911182..593e917c176b5bc5aafa57bf9f6030d749d91cd5 160000
--- a/third_party/protobuf
+++ b/third_party/protobuf
@@ -1 +1 @@
-Subproject commit 4a0dd03e52e09332c8fd0f8f26a8e0ae9f911182
+Subproject commit 593e917c176b5bc5aafa57bf9f6030d749d91cd5
diff --git a/third_party/zlib b/third_party/zlib
index 50893291621658f355bc5b4d450a8d06a563053d..cacf7f1d4e3d44d871b605da3b647f07d718623f 160000
--- a/third_party/zlib
+++ b/third_party/zlib
@@ -1 +1 @@
-Subproject commit 50893291621658f355bc5b4d450a8d06a563053d
+Subproject commit cacf7f1d4e3d44d871b605da3b647f07d718623f
diff --git a/tools/codegen/core/gen_static_metadata.py b/tools/codegen/core/gen_static_metadata.py
index ead57b2bf6d2c6738cf2851c8c4d41a6cfeaa7d2..360b0f56e9248c30e05909a2111b5c6f7cfca13c 100755
--- a/tools/codegen/core/gen_static_metadata.py
+++ b/tools/codegen/core/gen_static_metadata.py
@@ -124,6 +124,7 @@ CONFIG = [
     ('if-unmodified-since', ''),
     ('last-modified', ''),
     ('lb-token', ''),
+    ('lb-cost-bin', ''),
     ('link', ''),
     ('location', ''),
     ('max-forwards', ''),
diff --git a/tools/distrib/python/grpcio_tools/protoc_lib_deps.py b/tools/distrib/python/grpcio_tools/protoc_lib_deps.py
index 7e8cd987d5de0dbb9d5b3e92687471de14abf41e..c2aa6198b3d7c442548f2f1c4fa9dd5c18a76e63 100644
--- a/tools/distrib/python/grpcio_tools/protoc_lib_deps.py
+++ b/tools/distrib/python/grpcio_tools/protoc_lib_deps.py
@@ -29,7 +29,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # AUTO-GENERATED BY make_grpcio_tools.py!
-CC_FILES=['google/protobuf/compiler/zip_writer.cc', 'google/protobuf/compiler/subprocess.cc', 'google/protobuf/compiler/ruby/ruby_generator.cc', 'google/protobuf/compiler/python/python_generator.cc', 'google/protobuf/compiler/plugin.pb.cc', 'google/protobuf/compiler/plugin.cc', 'google/protobuf/compiler/php/php_generator.cc', 'google/protobuf/compiler/objectivec/objectivec_primitive_field.cc', 'google/protobuf/compiler/objectivec/objectivec_oneof.cc', 'google/protobuf/compiler/objectivec/objectivec_message_field.cc', 'google/protobuf/compiler/objectivec/objectivec_message.cc', 'google/protobuf/compiler/objectivec/objectivec_map_field.cc', 'google/protobuf/compiler/objectivec/objectivec_helpers.cc', 'google/protobuf/compiler/objectivec/objectivec_generator.cc', 'google/protobuf/compiler/objectivec/objectivec_file.cc', 'google/protobuf/compiler/objectivec/objectivec_field.cc', 'google/protobuf/compiler/objectivec/objectivec_extension.cc', 'google/protobuf/compiler/objectivec/objectivec_enum_field.cc', 'google/protobuf/compiler/objectivec/objectivec_enum.cc', 'google/protobuf/compiler/js/well_known_types_embed.cc', 'google/protobuf/compiler/js/js_generator.cc', 'google/protobuf/compiler/javanano/javanano_primitive_field.cc', 'google/protobuf/compiler/javanano/javanano_message_field.cc', 'google/protobuf/compiler/javanano/javanano_message.cc', 'google/protobuf/compiler/javanano/javanano_map_field.cc', 'google/protobuf/compiler/javanano/javanano_helpers.cc', 'google/protobuf/compiler/javanano/javanano_generator.cc', 'google/protobuf/compiler/javanano/javanano_file.cc', 'google/protobuf/compiler/javanano/javanano_field.cc', 'google/protobuf/compiler/javanano/javanano_extension.cc', 'google/protobuf/compiler/javanano/javanano_enum_field.cc', 'google/protobuf/compiler/javanano/javanano_enum.cc', 'google/protobuf/compiler/java/java_string_field_lite.cc', 'google/protobuf/compiler/java/java_string_field.cc', 'google/protobuf/compiler/java/java_shared_code_generator.cc', 'google/protobuf/compiler/java/java_service.cc', 'google/protobuf/compiler/java/java_primitive_field_lite.cc', 'google/protobuf/compiler/java/java_primitive_field.cc', 'google/protobuf/compiler/java/java_name_resolver.cc', 'google/protobuf/compiler/java/java_message_lite.cc', 'google/protobuf/compiler/java/java_message_field_lite.cc', 'google/protobuf/compiler/java/java_message_field.cc', 'google/protobuf/compiler/java/java_message_builder_lite.cc', 'google/protobuf/compiler/java/java_message_builder.cc', 'google/protobuf/compiler/java/java_message.cc', 'google/protobuf/compiler/java/java_map_field_lite.cc', 'google/protobuf/compiler/java/java_map_field.cc', 'google/protobuf/compiler/java/java_lazy_message_field_lite.cc', 'google/protobuf/compiler/java/java_lazy_message_field.cc', 'google/protobuf/compiler/java/java_helpers.cc', 'google/protobuf/compiler/java/java_generator_factory.cc', 'google/protobuf/compiler/java/java_generator.cc', 'google/protobuf/compiler/java/java_file.cc', 'google/protobuf/compiler/java/java_field.cc', 'google/protobuf/compiler/java/java_extension_lite.cc', 'google/protobuf/compiler/java/java_extension.cc', 'google/protobuf/compiler/java/java_enum_lite.cc', 'google/protobuf/compiler/java/java_enum_field_lite.cc', 'google/protobuf/compiler/java/java_enum_field.cc', 'google/protobuf/compiler/java/java_enum.cc', 'google/protobuf/compiler/java/java_doc_comment.cc', 'google/protobuf/compiler/java/java_context.cc', 'google/protobuf/compiler/csharp/csharp_wrapper_field.cc', 'google/protobuf/compiler/csharp/csharp_source_generator_base.cc', 'google/protobuf/compiler/csharp/csharp_repeated_primitive_field.cc', 'google/protobuf/compiler/csharp/csharp_repeated_message_field.cc', 'google/protobuf/compiler/csharp/csharp_repeated_enum_field.cc', 'google/protobuf/compiler/csharp/csharp_reflection_class.cc', 'google/protobuf/compiler/csharp/csharp_primitive_field.cc', 'google/protobuf/compiler/csharp/csharp_message_field.cc', 'google/protobuf/compiler/csharp/csharp_message.cc', 'google/protobuf/compiler/csharp/csharp_map_field.cc', 'google/protobuf/compiler/csharp/csharp_helpers.cc', 'google/protobuf/compiler/csharp/csharp_generator.cc', 'google/protobuf/compiler/csharp/csharp_field_base.cc', 'google/protobuf/compiler/csharp/csharp_enum_field.cc', 'google/protobuf/compiler/csharp/csharp_enum.cc', 'google/protobuf/compiler/csharp/csharp_doc_comment.cc', 'google/protobuf/compiler/cpp/cpp_string_field.cc', 'google/protobuf/compiler/cpp/cpp_service.cc', 'google/protobuf/compiler/cpp/cpp_primitive_field.cc', 'google/protobuf/compiler/cpp/cpp_message_field.cc', 'google/protobuf/compiler/cpp/cpp_message.cc', 'google/protobuf/compiler/cpp/cpp_map_field.cc', 'google/protobuf/compiler/cpp/cpp_helpers.cc', 'google/protobuf/compiler/cpp/cpp_generator.cc', 'google/protobuf/compiler/cpp/cpp_file.cc', 'google/protobuf/compiler/cpp/cpp_field.cc', 'google/protobuf/compiler/cpp/cpp_extension.cc', 'google/protobuf/compiler/cpp/cpp_enum_field.cc', 'google/protobuf/compiler/cpp/cpp_enum.cc', 'google/protobuf/compiler/command_line_interface.cc', 'google/protobuf/compiler/code_generator.cc', 'google/protobuf/wrappers.pb.cc', 'google/protobuf/wire_format.cc', 'google/protobuf/util/type_resolver_util.cc', 'google/protobuf/util/time_util.cc', 'google/protobuf/util/message_differencer.cc', 'google/protobuf/util/json_util.cc', 'google/protobuf/util/internal/utility.cc', 'google/protobuf/util/internal/type_info_test_helper.cc', 'google/protobuf/util/internal/type_info.cc', 'google/protobuf/util/internal/protostream_objectwriter.cc', 'google/protobuf/util/internal/protostream_objectsource.cc', 'google/protobuf/util/internal/proto_writer.cc', 'google/protobuf/util/internal/object_writer.cc', 'google/protobuf/util/internal/json_stream_parser.cc', 'google/protobuf/util/internal/json_objectwriter.cc', 'google/protobuf/util/internal/json_escaping.cc', 'google/protobuf/util/internal/field_mask_utility.cc', 'google/protobuf/util/internal/error_listener.cc', 'google/protobuf/util/internal/default_value_objectwriter.cc', 'google/protobuf/util/internal/datapiece.cc', 'google/protobuf/util/field_mask_util.cc', 'google/protobuf/util/field_comparator.cc', 'google/protobuf/util/delimited_message_util.cc', 'google/protobuf/unknown_field_set.cc', 'google/protobuf/type.pb.cc', 'google/protobuf/timestamp.pb.cc', 'google/protobuf/text_format.cc', 'google/protobuf/stubs/substitute.cc', 'google/protobuf/stubs/mathlimits.cc', 'google/protobuf/struct.pb.cc', 'google/protobuf/source_context.pb.cc', 'google/protobuf/service.cc', 'google/protobuf/reflection_ops.cc', 'google/protobuf/message.cc', 'google/protobuf/map_field.cc', 'google/protobuf/io/zero_copy_stream_impl.cc', 'google/protobuf/io/tokenizer.cc', 'google/protobuf/io/strtod.cc', 'google/protobuf/io/printer.cc', 'google/protobuf/io/gzip_stream.cc', 'google/protobuf/generated_message_reflection.cc', 'google/protobuf/field_mask.pb.cc', 'google/protobuf/extension_set_heavy.cc', 'google/protobuf/empty.pb.cc', 'google/protobuf/dynamic_message.cc', 'google/protobuf/duration.pb.cc', 'google/protobuf/descriptor_database.cc', 'google/protobuf/descriptor.pb.cc', 'google/protobuf/descriptor.cc', 'google/protobuf/compiler/parser.cc', 'google/protobuf/compiler/importer.cc', 'google/protobuf/api.pb.cc', 'google/protobuf/any.pb.cc', 'google/protobuf/any.cc', 'google/protobuf/wire_format_lite.cc', 'google/protobuf/stubs/time.cc', 'google/protobuf/stubs/strutil.cc', 'google/protobuf/stubs/structurally_valid.cc', 'google/protobuf/stubs/stringprintf.cc', 'google/protobuf/stubs/stringpiece.cc', 'google/protobuf/stubs/statusor.cc', 'google/protobuf/stubs/status.cc', 'google/protobuf/stubs/once.cc', 'google/protobuf/stubs/int128.cc', 'google/protobuf/stubs/common.cc', 'google/protobuf/stubs/bytestream.cc', 'google/protobuf/stubs/atomicops_internals_x86_msvc.cc', 'google/protobuf/stubs/atomicops_internals_x86_gcc.cc', 'google/protobuf/repeated_field.cc', 'google/protobuf/message_lite.cc', 'google/protobuf/io/zero_copy_stream_impl_lite.cc', 'google/protobuf/io/zero_copy_stream.cc', 'google/protobuf/io/coded_stream.cc', 'google/protobuf/generated_message_util.cc', 'google/protobuf/extension_set.cc', 'google/protobuf/arenastring.cc', 'google/protobuf/arena.cc', 'google/protobuf/compiler/js/embed.cc']
+CC_FILES=['google/protobuf/compiler/zip_writer.cc', 'google/protobuf/compiler/subprocess.cc', 'google/protobuf/compiler/ruby/ruby_generator.cc', 'google/protobuf/compiler/python/python_generator.cc', 'google/protobuf/compiler/plugin.pb.cc', 'google/protobuf/compiler/plugin.cc', 'google/protobuf/compiler/php/php_generator.cc', 'google/protobuf/compiler/objectivec/objectivec_primitive_field.cc', 'google/protobuf/compiler/objectivec/objectivec_oneof.cc', 'google/protobuf/compiler/objectivec/objectivec_message_field.cc', 'google/protobuf/compiler/objectivec/objectivec_message.cc', 'google/protobuf/compiler/objectivec/objectivec_map_field.cc', 'google/protobuf/compiler/objectivec/objectivec_helpers.cc', 'google/protobuf/compiler/objectivec/objectivec_generator.cc', 'google/protobuf/compiler/objectivec/objectivec_file.cc', 'google/protobuf/compiler/objectivec/objectivec_field.cc', 'google/protobuf/compiler/objectivec/objectivec_extension.cc', 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'google/protobuf/compiler/cpp/cpp_field.cc', 'google/protobuf/compiler/cpp/cpp_extension.cc', 'google/protobuf/compiler/cpp/cpp_enum_field.cc', 'google/protobuf/compiler/cpp/cpp_enum.cc', 'google/protobuf/compiler/command_line_interface.cc', 'google/protobuf/compiler/code_generator.cc', 'google/protobuf/wrappers.pb.cc', 'google/protobuf/wire_format.cc', 'google/protobuf/util/type_resolver_util.cc', 'google/protobuf/util/time_util.cc', 'google/protobuf/util/message_differencer.cc', 'google/protobuf/util/json_util.cc', 'google/protobuf/util/internal/utility.cc', 'google/protobuf/util/internal/type_info_test_helper.cc', 'google/protobuf/util/internal/type_info.cc', 'google/protobuf/util/internal/protostream_objectwriter.cc', 'google/protobuf/util/internal/protostream_objectsource.cc', 'google/protobuf/util/internal/proto_writer.cc', 'google/protobuf/util/internal/object_writer.cc', 'google/protobuf/util/internal/json_stream_parser.cc', 'google/protobuf/util/internal/json_objectwriter.cc', 'google/protobuf/util/internal/json_escaping.cc', 'google/protobuf/util/internal/field_mask_utility.cc', 'google/protobuf/util/internal/error_listener.cc', 'google/protobuf/util/internal/default_value_objectwriter.cc', 'google/protobuf/util/internal/datapiece.cc', 'google/protobuf/util/field_mask_util.cc', 'google/protobuf/util/field_comparator.cc', 'google/protobuf/unknown_field_set.cc', 'google/protobuf/type.pb.cc', 'google/protobuf/timestamp.pb.cc', 'google/protobuf/text_format.cc', 'google/protobuf/stubs/substitute.cc', 'google/protobuf/stubs/mathlimits.cc', 'google/protobuf/struct.pb.cc', 'google/protobuf/source_context.pb.cc', 'google/protobuf/service.cc', 'google/protobuf/reflection_ops.cc', 'google/protobuf/message.cc', 'google/protobuf/map_field.cc', 'google/protobuf/io/zero_copy_stream_impl.cc', 'google/protobuf/io/tokenizer.cc', 'google/protobuf/io/strtod.cc', 'google/protobuf/io/printer.cc', 'google/protobuf/io/gzip_stream.cc', 'google/protobuf/generated_message_reflection.cc', 'google/protobuf/field_mask.pb.cc', 'google/protobuf/extension_set_heavy.cc', 'google/protobuf/empty.pb.cc', 'google/protobuf/dynamic_message.cc', 'google/protobuf/duration.pb.cc', 'google/protobuf/descriptor_database.cc', 'google/protobuf/descriptor.pb.cc', 'google/protobuf/descriptor.cc', 'google/protobuf/compiler/parser.cc', 'google/protobuf/compiler/importer.cc', 'google/protobuf/api.pb.cc', 'google/protobuf/any.pb.cc', 'google/protobuf/any.cc', 'google/protobuf/wire_format_lite.cc', 'google/protobuf/stubs/time.cc', 'google/protobuf/stubs/strutil.cc', 'google/protobuf/stubs/structurally_valid.cc', 'google/protobuf/stubs/stringprintf.cc', 'google/protobuf/stubs/stringpiece.cc', 'google/protobuf/stubs/statusor.cc', 'google/protobuf/stubs/status.cc', 'google/protobuf/stubs/once.cc', 'google/protobuf/stubs/int128.cc', 'google/protobuf/stubs/common.cc', 'google/protobuf/stubs/bytestream.cc', 'google/protobuf/stubs/atomicops_internals_x86_msvc.cc', 'google/protobuf/stubs/atomicops_internals_x86_gcc.cc', 'google/protobuf/repeated_field.cc', 'google/protobuf/message_lite.cc', 'google/protobuf/io/zero_copy_stream_impl_lite.cc', 'google/protobuf/io/zero_copy_stream.cc', 'google/protobuf/io/coded_stream.cc', 'google/protobuf/generated_message_util.cc', 'google/protobuf/extension_set.cc', 'google/protobuf/arenastring.cc', 'google/protobuf/arena.cc', 'google/protobuf/compiler/js/embed.cc']
 PROTO_FILES=['google/protobuf/wrappers.proto', 'google/protobuf/type.proto', 'google/protobuf/timestamp.proto', 'google/protobuf/struct.proto', 'google/protobuf/source_context.proto', 'google/protobuf/field_mask.proto', 'google/protobuf/empty.proto', 'google/protobuf/duration.proto', 'google/protobuf/descriptor.proto', 'google/protobuf/compiler/plugin.proto', 'google/protobuf/api.proto', 'google/protobuf/any.proto']
 
 CC_INCLUDE='third_party/protobuf/src'
diff --git a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
index 02e811f664b9f455cf5ab0390a2344d819736659..82b96e086e047f79e80edaad130d1d0e05b0a7b9 100755
--- a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
+++ b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
@@ -31,7 +31,7 @@
 set -e
 
 # directories to run against
-DIRS="src/core/lib src/core/tsi src/core/ext src/cpp test/core test/cpp include src/compiler"
+DIRS="src/core/lib src/core/tsi src/core/ext src/cpp test/core test/cpp include src/compiler src/node src/csharp src/ruby"
 
 # file matching patterns to check
 GLOB="*.h *.c *.cc"
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 1864dd9e908404a8e66f8a9ffc05d51a545a9250..1d2aa9595570c0b492c48310a6f4bc84de5676dc 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -835,7 +835,6 @@ include/grpc++/impl/codegen/service_type.h \
 include/grpc++/impl/codegen/slice.h \
 include/grpc++/impl/codegen/status.h \
 include/grpc++/impl/codegen/status_code_enum.h \
-include/grpc++/impl/codegen/status_helper.h \
 include/grpc++/impl/codegen/string_ref.h \
 include/grpc++/impl/codegen/stub_options.h \
 include/grpc++/impl/codegen/sync_stream.h \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index ca3514bc61e7f30be3b0c95eb9225142cd79eebd..88a9736d5b53382ef7490ef1bca83b1fb2b9ba5b 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -836,7 +836,6 @@ include/grpc++/impl/codegen/service_type.h \
 include/grpc++/impl/codegen/slice.h \
 include/grpc++/impl/codegen/status.h \
 include/grpc++/impl/codegen/status_code_enum.h \
-include/grpc++/impl/codegen/status_helper.h \
 include/grpc++/impl/codegen/string_ref.h \
 include/grpc++/impl/codegen/stub_options.h \
 include/grpc++/impl/codegen/sync_stream.h \
diff --git a/tools/grift/README.md b/tools/grift/README.md
index 7cbbdc567bf3cecb7a90b7be65411e6753baa76f..2b5fa5ae14b14bab4ad583adf55f8e37ee45a46a 100644
--- a/tools/grift/README.md
+++ b/tools/grift/README.md
@@ -1,6 +1,4 @@
-Copyright 2016 Google Inc.
-
-#Documentation
+# Documentation
 
 grift is integration of [Apache Thrift](https://github.com/apache/thrift.git) Serializer with gRPC.
 
@@ -8,19 +6,19 @@ This integration allows you to use grpc to send thrift messages in C++ and java.
 
 grift uses Compact Protocol to serialize thrift messages. 
 
-##generating grpc plugins for thrift services
+## generating grpc plugins for thrift services
 
-###CPP
+### C++
 ```sh
  $ thrift --gen cpp <thrift-file>
 ```
 
-###JAVA
+### Java
 ```sh
  $ thrift --gen java <thrift-file>
 ```
 
-#Installation
+# Installation
 
 Before Installing thrift make sure to apply this [patch](grpc_plugins_generator.patch) to third_party/thrift.
 Go to third_party/thrift and follow the [INSTALLATION](https://github.com/apache/thrift.git) instructions to install thrift with commit id bcad91771b7f0bff28a1cac1981d7ef2b9bcef3c.
\ No newline at end of file
diff --git a/tools/grpcz/BUILD b/tools/grpcz/BUILD
index 5e1faf7064f80b9e704f8ea0dab0d28fdd53ab18..cc887a53751983458028378dded0a9db4ef8759c 100644
--- a/tools/grpcz/BUILD
+++ b/tools/grpcz/BUILD
@@ -33,31 +33,31 @@ package(default_visibility = ["//visibility:public"])
 
 load("//:bazel/grpc_build_system.bzl", "grpc_proto_library")
 
-grpc_proto_library (
+grpc_proto_library(
     name = "monitoring_proto",
     srcs = [
         "monitoring.proto",
     ],
+    well_known_protos = "@com_google_protobuf//:well_known_protos",
     deps = [
         ":census_proto",
     ],
-    well_known_protos = "@submodule_protobuf//:well_known_protos",
 )
 
-grpc_proto_library (
+grpc_proto_library(
     name = "census_proto",
     srcs = [
         "census.proto",
     ],
-    well_known_protos = "@submodule_protobuf//:well_known_protos",
+    well_known_protos = "@com_google_protobuf//:well_known_protos",
 )
 
 cc_binary(
     name = "grpcz_client",
-    srcs = ["grpcz_client.cc",],
+    srcs = ["grpcz_client.cc"],
     deps = [
-        "//external:gflags",
         "monitoring_proto",
+        "//external:gflags",
         "@mongoose_repo//:mongoose_lib",
     ],
 )
diff --git a/tools/grpcz/grpcz_client.cc b/tools/grpcz/grpcz_client.cc
index 47eec8dfc38b1e8877c1b4b2d879a7dc86e64d49..a5e66f7b542e33e05bdb767ef15b1438f01b1b0c 100644
--- a/tools/grpcz/grpcz_client.cc
+++ b/tools/grpcz/grpcz_client.cc
@@ -38,7 +38,7 @@
 #include <grpc/support/log.h>
 
 #include "gflags/gflags.h"
-#include "mongoose.h"
+/* #include "mongoose.h" */
 
 // TODO (makdharma): remove local copies of these protos
 #include "tools/grpcz/census.grpc.pb.h"
@@ -122,8 +122,9 @@ class GrpczClient {
   std::unique_ptr<Monitoring::Stub> stub_;
 };
 
-static struct mg_serve_http_opts s_http_server_opts;
 std::unique_ptr<GrpczClient> g_grpcz_client;
+/*
+static struct mg_serve_http_opts s_http_server_opts;
 
 static void ev_handler(struct mg_connection *nc, int ev, void *p) {
   if (ev == MG_EV_HTTP_REQUEST) {
@@ -141,6 +142,7 @@ static void grpcz_handler(struct mg_connection *nc, int ev, void *ev_data) {
   mg_printf(nc, "HTTP/1.0 200 OK\r\n\r\n%s", rendered_html.c_str());
   nc->flags |= MG_F_SEND_AND_CLOSE;
 }
+*/
 
 int main(int argc, char **argv) {
   gflags::ParseCommandLineFlags(&argc, &argv, true);
@@ -156,6 +158,7 @@ int main(int argc, char **argv) {
     return 0;
   }
 
+  /*
   // Set up a mongoose webserver handler
   struct mg_mgr mgr;
   mg_mgr_init(&mgr, NULL);
@@ -177,5 +180,6 @@ int main(int argc, char **argv) {
     mg_mgr_poll(&mgr, k_sleep_millis);
   }
   mg_mgr_free(&mgr);
+  */
   return 0;
 }
diff --git a/tools/jenkins/run_c_cpp_test.sh b/tools/jenkins/run_c_cpp_test.sh
new file mode 100755
index 0000000000000000000000000000000000000000..a7e574518e31921d3de4ceae2ea6b3edf9b55a45
--- /dev/null
+++ b/tools/jenkins/run_c_cpp_test.sh
@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# This script is invoked by a Jenkins pull request job and executes all
+# args passed to this script if the pull request affect C/C++ code
+set -ex
+
+# Enter the gRPC repo root
+cd $(dirname $0)/../..
+
+AFFECTS_C_CPP=`python -c 'import sys; \
+               sys.path.insert(0, "tools/run_tests/python_utils"); \
+               import filter_pull_request_tests as filter; \
+               print(filter.affects_c_cpp("origin/$ghprbTargetBranch"))'`
+
+if [ $AFFECTS_C_CPP == "False" ] ; then
+  echo "This pull request does not affect C/C++. Tests do not need to be run."
+else
+  $@
+fi
diff --git a/tools/jenkins/run_interop_objc.sh b/tools/jenkins/run_interop_objc.sh
new file mode 100755
index 0000000000000000000000000000000000000000..29f9ac989c76c64285d0f531c8c3d28c04e84e04
--- /dev/null
+++ b/tools/jenkins/run_interop_objc.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# This script is invoked by Jenkins and runs interop test suite.
+set -ex
+
+export LANG=en_US.UTF-8
+
+# Enter the gRPC repo root
+cd $(dirname $0)/../..
+
+tools/run_tests/run_interop_tests.py -l objc -s all --use_docker -t -j 1 $@ || true
diff --git a/tools/jenkins/run_performance.sh b/tools/jenkins/run_performance.sh
index dee033a951aaf77bc563836c950ba4e4ab085a41..544e31dcbdbae7ec66c9be8a0c1744e7bc8603b5 100755
--- a/tools/jenkins/run_performance.sh
+++ b/tools/jenkins/run_performance.sh
@@ -32,7 +32,7 @@
 set -ex
 
 # List of benchmarks that provide good signal for analyzing performance changes in pull requests
-BENCHMARKS_TO_RUN="bm_closure bm_cq bm_call_create bm_error bm_chttp2_hpack bm_chttp2_transport bm_pollset bm_metadata"
+BENCHMARKS_TO_RUN="bm_fullstack_unary_ping_pong bm_fullstack_streaming_ping_pong bm_fullstack_streaming_pump bm_closure bm_cq bm_call_create bm_error bm_chttp2_hpack bm_chttp2_transport bm_pollset bm_metadata"
 
 # Enter the gRPC repo root
 cd $(dirname $0)/../..
diff --git a/tools/jenkins/run_performance_profile_hourly.sh b/tools/jenkins/run_performance_profile_hourly.sh
index dfcc2bb1163c15fc4f3a0679cf5573b1741d2653..c352a9f4acf4cf209d6062d3b217657b81ccb33e 100755
--- a/tools/jenkins/run_performance_profile_hourly.sh
+++ b/tools/jenkins/run_performance_profile_hourly.sh
@@ -32,6 +32,8 @@ set -ex
 
 cd $(dirname $0)/../..
 
+./tools/run_tests/start_port_server.py || true
+
 CPUS=`python -c 'import multiprocessing; print multiprocessing.cpu_count()'`
 
 make CONFIG=opt memory_profile_test memory_profile_client memory_profile_server -j $CPUS
diff --git a/tools/profiling/microbenchmarks/bm2bq.py b/tools/profiling/microbenchmarks/bm2bq.py
index ffb11f57d8f598c6e324fa428ba0db61faa336ce..99cf4a558cfd8d064b555a7a0cf3fb98a4f256a3 100755
--- a/tools/profiling/microbenchmarks/bm2bq.py
+++ b/tools/profiling/microbenchmarks/bm2bq.py
@@ -71,6 +71,7 @@ columns = [
   ('end_of_stream', 'boolean'),
   ('header_bytes_per_iteration', 'float'),
   ('framing_bytes_per_iteration', 'float'),
+  ('nows_per_iteration', 'float'),
 ]
 
 SANITIZE = {
@@ -103,4 +104,3 @@ for row in bm_json.expand_json(js, js2):
       if row[name] == '': continue
       sane_row[name] = SANITIZE[sql_type](row[name])
   writer.writerow(sane_row)
-
diff --git a/tools/profiling/microbenchmarks/bm_diff.py b/tools/profiling/microbenchmarks/bm_diff.py
index 35a79593b41903512f4331fa58030341143db29c..6ee4cbfc7bb18725e16db4584e109295a1a52386 100755
--- a/tools/profiling/microbenchmarks/bm_diff.py
+++ b/tools/profiling/microbenchmarks/bm_diff.py
@@ -41,6 +41,23 @@ import pipes
 import os
 sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), '..', '..', 'run_tests', 'python_utils'))
 import comment_on_pr
+import jobset
+import itertools
+import speedup
+import random
+import shutil
+import errno
+
+_INTERESTING = (
+  'cpu_time',
+  'real_time',
+  'locks_per_iteration',
+  'allocs_per_iteration',
+  'writes_per_iteration',
+  'atm_cas_per_iteration',
+  'atm_add_per_iteration',
+  'nows_per_iteration',
+)
 
 def changed_ratio(n, o):
   if float(o) <= .0001: o = 0
@@ -60,26 +77,6 @@ def median(ary):
 def min_change(pct):
   return lambda n, o: abs(changed_ratio(n,o)) > pct/100.0
 
-nanos = {
-  'abs_diff': 5,
-  'pct_diff': 10,
-}
-counter = {
-  'abs_diff': 0.5,
-  'pct_diff': 10,
-}
-
-_INTERESTING = {
-  'cpu_time': nanos,
-  'real_time': nanos,
-  'locks_per_iteration': counter,
-  'allocs_per_iteration': counter,
-  'writes_per_iteration': counter,
-  'atm_cas_per_iteration': counter,
-  'atm_add_per_iteration': counter,
-}
-
-
 _AVAILABLE_BENCHMARK_TESTS = ['bm_fullstack_unary_ping_pong',
                               'bm_fullstack_streaming_ping_pong',
                               'bm_fullstack_streaming_pump',
@@ -95,14 +92,15 @@ _AVAILABLE_BENCHMARK_TESTS = ['bm_fullstack_unary_ping_pong',
 
 argp = argparse.ArgumentParser(description='Perform diff on microbenchmarks')
 argp.add_argument('-t', '--track',
-                  choices=sorted(_INTERESTING.keys()),
+                  choices=sorted(_INTERESTING),
                   nargs='+',
-                  default=sorted(_INTERESTING.keys()),
+                  default=sorted(_INTERESTING),
                   help='Which metrics to track')
 argp.add_argument('-b', '--benchmarks', nargs='+', choices=_AVAILABLE_BENCHMARK_TESTS, default=['bm_cq'])
 argp.add_argument('-d', '--diff_base', type=str)
-argp.add_argument('-r', '--repetitions', type=int, default=4)
-argp.add_argument('-p', '--p_threshold', type=float, default=0.01)
+argp.add_argument('-r', '--repetitions', type=int, default=1)
+argp.add_argument('-l', '--loops', type=int, default=20)
+argp.add_argument('-j', '--jobs', type=int, default=multiprocessing.cpu_count())
 args = argp.parse_args()
 
 assert args.diff_base
@@ -117,9 +115,10 @@ def avg(lst):
 
 def make_cmd(cfg):
   return ['make'] + args.benchmarks + [
-      'CONFIG=%s' % cfg, '-j', '%d' % multiprocessing.cpu_count()]
+      'CONFIG=%s' % cfg, '-j', '%d' % args.jobs]
 
-def build():
+def build(dest):
+  shutil.rmtree('bm_diff_%s' % dest, ignore_errors=True)
   subprocess.check_call(['git', 'submodule', 'update'])
   try:
     subprocess.check_call(make_cmd('opt'))
@@ -128,38 +127,38 @@ def build():
     subprocess.check_call(['make', 'clean'])
     subprocess.check_call(make_cmd('opt'))
     subprocess.check_call(make_cmd('counters'))
+  os.rename('bins', 'bm_diff_%s' % dest)
 
-def collect1(bm, cfg, ver):
-  cmd = ['bins/%s/%s' % (cfg, bm),
-         '--benchmark_out=%s.%s.%s.json' % (bm, cfg, ver),
+def collect1(bm, cfg, ver, idx):
+  cmd = ['bm_diff_%s/%s/%s' % (ver, cfg, bm),
+         '--benchmark_out=%s.%s.%s.%d.json' % (bm, cfg, ver, idx),
          '--benchmark_out_format=json',
          '--benchmark_repetitions=%d' % (args.repetitions)
          ]
-  print cmd
-  subprocess.check_call(cmd)
+  return jobset.JobSpec(cmd, shortname='%s %s %s %d/%d' % (bm, cfg, ver, idx+1, args.loops),
+                             verbose_success=True, timeout_seconds=None)
 
-build()
-for bm in args.benchmarks:
-  collect1(bm, 'opt', 'new')
-  collect1(bm, 'counters', 'new')
+build('new')
 
 where_am_i = subprocess.check_output(['git', 'rev-parse', '--abbrev-ref', 'HEAD']).strip()
 subprocess.check_call(['git', 'checkout', args.diff_base])
-
 try:
-  build()
-  comparables = []
-  for bm in args.benchmarks:
-    try:
-      collect1(bm, 'opt', 'old')
-      collect1(bm, 'counters', 'old')
-      comparables.append(bm)
-    except subprocess.CalledProcessError, e:
-      pass
+  build('old')
 finally:
   subprocess.check_call(['git', 'checkout', where_am_i])
   subprocess.check_call(['git', 'submodule', 'update'])
 
+jobs = []
+for loop in range(0, args.loops):
+  jobs.extend(x for x in itertools.chain(
+    (collect1(bm, 'opt', 'new', loop) for bm in args.benchmarks),
+    (collect1(bm, 'counters', 'new', loop) for bm in args.benchmarks),
+    (collect1(bm, 'opt', 'old', loop) for bm in args.benchmarks),
+    (collect1(bm, 'counters', 'old', loop) for bm in args.benchmarks),
+  ))
+random.shuffle(jobs, random.SystemRandom().random)
+
+jobset.run(jobs, maxjobs=args.jobs)
 
 class Benchmark:
 
@@ -180,16 +179,11 @@ class Benchmark:
       new = self.samples[True][f]
       old = self.samples[False][f]
       if not new or not old: continue
-      p = stats.ttest_ind(new, old)[1]
-      new_mdn = median(new)
-      old_mdn = median(old)
-      delta = new_mdn - old_mdn
-      ratio = changed_ratio(new_mdn, old_mdn)
-      print '%s: new=%r old=%r new_mdn=%f old_mdn=%f delta=%f(%f:%f) ratio=%f(%f:%f) p=%f' % (
-      f, new, old, new_mdn, old_mdn, delta, abs(delta), _INTERESTING[f]['abs_diff'], ratio, abs(ratio), _INTERESTING[f]['pct_diff']/100.0, p
-      )
-      if p < args.p_threshold and abs(delta) > _INTERESTING[f]['abs_diff'] and abs(ratio) > _INTERESTING[f]['pct_diff']/100.0:
-        self.final[f] = delta
+      mdn_diff = abs(median(new) - median(old))
+      print '%s: new=%r old=%r mdn_diff=%r' % (f, new, old, mdn_diff)
+      s = speedup.speedup(new, old)
+      if abs(s) > 3 and mdn_diff > 0.5:
+        self.final[f] = '%+d%%' % s
     return self.final.keys()
 
   def skip(self):
@@ -199,43 +193,58 @@ class Benchmark:
     return [self.final[f] if f in self.final else '' for f in flds]
 
 
-benchmarks = collections.defaultdict(Benchmark)
-
-for bm in comparables:
-  with open('%s.counters.new.json' % bm) as f:
-    js_new_ctr = json.loads(f.read())
-  with open('%s.opt.new.json' % bm) as f:
-    js_new_opt = json.loads(f.read())
-  with open('%s.counters.old.json' % bm) as f:
-    js_old_ctr = json.loads(f.read())
-  with open('%s.opt.old.json' % bm) as f:
-    js_old_opt = json.loads(f.read())
-
-  for row in bm_json.expand_json(js_new_ctr, js_new_opt):
-    print row
-    name = row['cpp_name']
-    if name.endswith('_mean') or name.endswith('_stddev'): continue
-    benchmarks[name].add_sample(row, True)
-  for row in bm_json.expand_json(js_old_ctr, js_old_opt):
-    print row
-    name = row['cpp_name']
-    if name.endswith('_mean') or name.endswith('_stddev'): continue
-    benchmarks[name].add_sample(row, False)
-
-really_interesting = set()
-for name, bm in benchmarks.items():
-  print name
-  really_interesting.update(bm.process())
-fields = [f for f in args.track if f in really_interesting]
-
-headers = ['Benchmark'] + fields
-rows = []
-for name in sorted(benchmarks.keys()):
-  if benchmarks[name].skip(): continue
-  rows.append([name] + benchmarks[name].row(fields))
-if rows:
-  text = 'Performance differences noted:\n' + tabulate.tabulate(rows, headers=headers, floatfmt='+.2f')
-else:
-  text = 'No significant performance differences'
-comment_on_pr.comment_on_pr('```\n%s\n```' % text)
-print text
+def eintr_be_gone(fn):
+  """Run fn until it doesn't stop because of EINTR"""
+  while True:
+    try:
+      return fn()
+    except IOError, e:
+      if e.errno != errno.EINTR:
+        raise
+
+
+def read_json(filename):
+  with open(filename) as f: return json.loads(f.read())
+
+
+def finalize():
+  benchmarks = collections.defaultdict(Benchmark)
+
+  for bm in args.benchmarks:
+    for loop in range(0, args.loops):
+      js_new_ctr = read_json('%s.counters.new.%d.json' % (bm, loop))
+      js_new_opt = read_json('%s.opt.new.%d.json' % (bm, loop))
+      js_old_ctr = read_json('%s.counters.old.%d.json' % (bm, loop))
+      js_old_opt = read_json('%s.opt.old.%d.json' % (bm, loop))
+
+      for row in bm_json.expand_json(js_new_ctr, js_new_opt):
+        print row
+        name = row['cpp_name']
+        if name.endswith('_mean') or name.endswith('_stddev'): continue
+        benchmarks[name].add_sample(row, True)
+      for row in bm_json.expand_json(js_old_ctr, js_old_opt):
+        print row
+        name = row['cpp_name']
+        if name.endswith('_mean') or name.endswith('_stddev'): continue
+        benchmarks[name].add_sample(row, False)
+
+  really_interesting = set()
+  for name, bm in benchmarks.items():
+    print name
+    really_interesting.update(bm.process())
+  fields = [f for f in args.track if f in really_interesting]
+
+  headers = ['Benchmark'] + fields
+  rows = []
+  for name in sorted(benchmarks.keys()):
+    if benchmarks[name].skip(): continue
+    rows.append([name] + benchmarks[name].row(fields))
+  if rows:
+    text = 'Performance differences noted:\n' + tabulate.tabulate(rows, headers=headers, floatfmt='+.2f')
+  else:
+    text = 'No significant performance differences'
+  comment_on_pr.comment_on_pr('```\n%s\n```' % text)
+  print text
+
+
+eintr_be_gone(finalize)
diff --git a/tools/profiling/microbenchmarks/speedup.py b/tools/profiling/microbenchmarks/speedup.py
new file mode 100644
index 0000000000000000000000000000000000000000..8af0066c9df56b9dfc441a1e4b4117631b55bd62
--- /dev/null
+++ b/tools/profiling/microbenchmarks/speedup.py
@@ -0,0 +1,67 @@
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from scipy import stats
+import math
+
+_THRESHOLD = 1e-10
+
+def scale(a, mul):
+  return [x*mul for x in a]
+
+def cmp(a, b):
+  return stats.ttest_ind(a, b)
+
+def speedup(new, old):
+  s0, p0 = cmp(new, old)
+  if math.isnan(p0): return 0
+  if s0 == 0: return 0
+  if p0 > _THRESHOLD: return 0
+  if s0 < 0:
+    pct = 1
+    while pct < 101:
+      sp, pp = cmp(new, scale(old, 1 - pct/100.0))
+      if sp > 0: break
+      if pp > _THRESHOLD: break
+      pct += 1
+    return -(pct - 1)
+  else:
+    pct = 1
+    while pct < 100000:
+      sp, pp = cmp(new, scale(old, 1 + pct/100.0))
+      if sp < 0: break
+      if pp > _THRESHOLD: break
+      pct += 1
+    return pct - 1
+
+if __name__ == "__main__":
+  new=[66034560.0, 126765693.0, 99074674.0, 98588433.0, 96731372.0, 110179725.0, 103802110.0, 101139800.0, 102357205.0, 99016353.0, 98840824.0, 99585632.0, 98791720.0, 96171521.0, 95327098.0, 95629704.0, 98209772.0, 99779411.0, 100182488.0, 98354192.0, 99644781.0, 98546709.0, 99019176.0, 99543014.0, 99077269.0, 98046601.0, 99319039.0, 98542572.0, 98886614.0, 72560968.0]
+  old=[60423464.0, 71249570.0, 73213089.0, 73200055.0, 72911768.0, 72347798.0, 72494672.0, 72756976.0, 72116565.0, 71541342.0, 73442538.0, 74817383.0, 73007780.0, 72499062.0, 72404945.0, 71843504.0, 73245405.0, 72778304.0, 74004519.0, 73694464.0, 72919931.0, 72955481.0, 71583857.0, 71350467.0, 71836817.0, 70064115.0, 70355345.0, 72516202.0, 71716777.0, 71532266.0]
+  print speedup(new, old)
+  print speedup(old, new)
diff --git a/tools/run_tests/README.md b/tools/run_tests/README.md
index e709ddd2c021718eb2b519826c03beeafb0a4e5f..05d33fd6b1ca40c1aedee9bead392577d00fe922 100644
--- a/tools/run_tests/README.md
+++ b/tools/run_tests/README.md
@@ -1,44 +1,44 @@
-#Overview
+# Overview
 
 This directory contains scripts that facilitate building and running tests. We are using python scripts as entrypoint for our
 tests because that gives us the opportunity to run tests using the same commandline regardless of the platform you are using.
 
-#Unit tests (run_tests.py)
+# Unit tests (run_tests.py)
 
 Builds gRPC in given language and runs unit tests. Use `tools/run_tests/run_tests.py --help` for more help.
 
-######Example
+###### Example
 `tools/run_tests/run_tests.py -l csharp -c dbg`
 
-######Useful options (among many others)
+###### Useful options (among many others)
 - `--use_docker` Builds a docker container containing all the prerequisites for given language and runs the tests under that container.
 - `--build_only` Only build, do not run the tests.
 
-#Interop tests (run_interop_tests.py)
+# Interop tests (run_interop_tests.py)
 
 Runs tests for cross-platform/cross-language interoperability. For more details, see [Interop tests descriptions](/doc/interop-test-descriptions.md)
 The script is also capable of running interop tests for grpc-java and grpc-go, using sources checked out alongside the ones of the grpc repository.
 
-######Example
+###### Example
 `tools/run_tests/run_interop_tests.py -l csharp -s c++ --use_docker` (run interop tests with C# client and C++ server)
 
 Note: if you see an error like `no space left on device` when running the
 interop tests using Docker, make sure that Docker is building the image files in
 a location with sufficient disk space.
 
-#Performance benchmarks (run_performance_tests.py)
+# Performance benchmarks (run_performance_tests.py)
 
 Runs predefined benchmark scenarios for given languages. Besides the simple configuration of running all the scenarios locally,
 the script also supports orchestrating test runs with client and server running on different machines and uploading the results
 to BigQuery.
 
-######Example
+###### Example
 `tools/run_tests/run_peformance_tests.py -l c++ node`
 
-######Useful options
+###### Useful options
 - `--regex` use regex to select particular scenarios to run.
 
-#Stress tests (run_stress_tests.py)
+# Stress tests (run_stress_tests.py)
 
 Runs modified interop tests clients and servers under heavy load for an extended period of time to discover potential stability issues.
 The tests are internally using Kubernetes to run the client and server on GKE and upload statistics to BigQuery.
@@ -47,10 +47,10 @@ The tests are internally using Kubernetes to run the client and server on GKE an
 
 The directory `tools/run_tests/stress_test/configs/` contains the config files for several scenarios
 
-#Artifacts & Packages (task_runner.py)
+# Artifacts & Packages (task_runner.py)
 
 A generalized framework for running predefined tasks based on their labels. We use this to building binary artifacts & distrib packages and testing them)
 
-######Example
+###### Example
 `tools/run_tests/task_runner.py -f python artifact linux x64` (build tasks with labels `python`, `artifact`, `linux`, and `x64`)
 
diff --git a/tools/run_tests/artifacts/build_artifact_node.bat b/tools/run_tests/artifacts/build_artifact_node.bat
index 336a63b9f568d65096c41bcd2d7bf851a9ebb087..bfd4461f7217f99a8221df9890d6f43d579f1b77 100644
--- a/tools/run_tests/artifacts/build_artifact_node.bat
+++ b/tools/run_tests/artifacts/build_artifact_node.bat
@@ -29,7 +29,7 @@
 
 set node_versions=4.0.0 5.0.0 6.0.0 7.0.0
 
-set electron_versions=1.0.0 1.1.0 1.2.0 1.3.0 1.4.0
+set electron_versions=1.0.0 1.1.0 1.2.0 1.3.0 1.4.0 1.5.0 1.6.0
 
 set PATH=%PATH%;C:\Program Files\nodejs\;%APPDATA%\npm
 
diff --git a/tools/run_tests/artifacts/build_artifact_node.sh b/tools/run_tests/artifacts/build_artifact_node.sh
index a33ab45ac211508ec5ca504af03507c2896045f9..2da2ac5f91927070377288f3303a9718b6e2e2b6 100755
--- a/tools/run_tests/artifacts/build_artifact_node.sh
+++ b/tools/run_tests/artifacts/build_artifact_node.sh
@@ -44,7 +44,7 @@ npm update
 
 node_versions=( 4.0.0 5.0.0 6.0.0 7.0.0 )
 
-electron_versions=( 1.0.0 1.1.0 1.2.0 1.3.0 1.4.0 )
+electron_versions=( 1.0.0 1.1.0 1.2.0 1.3.0 1.4.0 1.5.0 1.6.0 )
 
 for version in ${node_versions[@]}
 do
diff --git a/tools/run_tests/generated/configs.json b/tools/run_tests/generated/configs.json
index 93dd6fb3d434c1257b29a7183455ea446f4573a9..abbe76d60c20e79ef819a3c5edcd09b971b97ff5 100644
--- a/tools/run_tests/generated/configs.json
+++ b/tools/run_tests/generated/configs.json
@@ -38,6 +38,9 @@
       "ASAN_OPTIONS": "detect_leaks=0:color=always"
     }
   }, 
+  {
+    "config": "c++-compat"
+  }, 
   {
     "config": "ubsan", 
     "environ": {
diff --git a/tools/run_tests/generated/sources_and_headers.json b/tools/run_tests/generated/sources_and_headers.json
index 3b8850564b344225beff5de8c0d3d54bedb0f2fa..0d4612b097212e5306a1e3f1189832972ca95573 100644
--- a/tools/run_tests/generated/sources_and_headers.json
+++ b/tools/run_tests/generated/sources_and_headers.json
@@ -470,6 +470,23 @@
     "third_party": false, 
     "type": "target"
   }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c", 
+    "name": "fake_resolver_test", 
+    "src": [
+      "test/core/client_channel/resolvers/fake_resolver_test.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
   {
     "deps": [
       "gpr", 
@@ -1961,6 +1978,23 @@
     "third_party": false, 
     "type": "target"
   }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c", 
+    "name": "slice_hash_table_test", 
+    "src": [
+      "test/core/slice/slice_hash_table_test.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
   {
     "deps": [
       "gpr", 
@@ -2857,6 +2891,8 @@
   }, 
   {
     "deps": [
+      "gpr", 
+      "grpc", 
       "grpc++_codegen_base", 
       "grpc++_codegen_base_src"
     ], 
@@ -8896,7 +8932,6 @@
       "include/grpc++/impl/codegen/slice.h", 
       "include/grpc++/impl/codegen/status.h", 
       "include/grpc++/impl/codegen/status_code_enum.h", 
-      "include/grpc++/impl/codegen/status_helper.h", 
       "include/grpc++/impl/codegen/string_ref.h", 
       "include/grpc++/impl/codegen/stub_options.h", 
       "include/grpc++/impl/codegen/sync_stream.h", 
@@ -8931,7 +8966,6 @@
       "include/grpc++/impl/codegen/slice.h", 
       "include/grpc++/impl/codegen/status.h", 
       "include/grpc++/impl/codegen/status_code_enum.h", 
-      "include/grpc++/impl/codegen/status_helper.h", 
       "include/grpc++/impl/codegen/string_ref.h", 
       "include/grpc++/impl/codegen/stub_options.h", 
       "include/grpc++/impl/codegen/sync_stream.h", 
diff --git a/tools/run_tests/generated/tests.json b/tools/run_tests/generated/tests.json
index dde006737f204e115fc2467dda24e0d2fef9a3f4..120a84e8a4bb91e27734a1823ae0ed86e4c3ae90 100644
--- a/tools/run_tests/generated/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -9,7 +9,7 @@
       "posix", 
       "windows"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -363,7 +363,7 @@
       "posix", 
       "windows"
     ], 
-    "cpu_cost": 30, 
+    "cpu_cost": 10, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -407,7 +407,7 @@
       "posix", 
       "windows"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 2.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -564,7 +564,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 3, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -577,6 +577,28 @@
       "linux"
     ]
   }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c", 
+    "name": "fake_resolver_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ]
+  }, 
   {
     "args": [], 
     "ci_platforms": [
@@ -757,7 +779,7 @@
       "posix", 
       "windows"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 30, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -889,7 +911,7 @@
       "posix", 
       "windows"
     ], 
-    "cpu_cost": 10, 
+    "cpu_cost": 3, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -2049,6 +2071,28 @@
       "windows"
     ]
   }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c", 
+    "name": "slice_hash_table_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ]
+  }, 
   {
     "args": [], 
     "ci_platforms": [
@@ -5824,7 +5868,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -5893,7 +5937,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6102,7 +6146,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6148,7 +6192,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6171,7 +6215,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6217,7 +6261,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6240,7 +6284,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6309,7 +6353,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6378,7 +6422,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6401,7 +6445,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6424,7 +6468,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -6449,7 +6493,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6495,7 +6539,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6587,7 +6631,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6610,7 +6654,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6679,7 +6723,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -6725,7 +6769,7 @@
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+    "cpu_cost": 0.1, 
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     "flaky": false, 
@@ -16402,7 +16423,7 @@
       "linux", 
       "posix"
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+    "cpu_cost": 0.1, 
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@@ -16474,7 +16495,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
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@@ -16690,7 +16711,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
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@@ -16738,7 +16759,7 @@
       "linux", 
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@@ -16762,7 +16783,7 @@
       "linux", 
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@@ -16810,7 +16831,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
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@@ -16834,7 +16855,7 @@
       "linux", 
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@@ -16906,7 +16927,7 @@
       "linux", 
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@@ -16978,7 +16999,7 @@
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@@ -17002,7 +17023,7 @@
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@@ -17026,7 +17047,7 @@
       "linux", 
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@@ -17050,7 +17071,7 @@
       "linux", 
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@@ -17098,7 +17119,7 @@
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@@ -17194,7 +17215,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
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@@ -17218,7 +17239,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
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@@ -17290,7 +17311,7 @@
       "linux", 
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@@ -17338,7 +17359,7 @@
       "linux", 
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@@ -17362,7 +17383,7 @@
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@@ -17386,7 +17407,7 @@
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@@ -17410,7 +17431,7 @@
       "linux", 
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@@ -17506,7 +17527,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
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@@ -17554,7 +17575,7 @@
       "linux", 
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@@ -17578,7 +17599,7 @@
       "linux", 
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@@ -17650,7 +17671,7 @@
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@@ -17722,7 +17743,7 @@
       "linux", 
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@@ -17890,7 +17911,7 @@
       "linux", 
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@@ -17938,7 +17959,7 @@
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@@ -17962,7 +17983,7 @@
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@@ -18010,7 +18031,7 @@
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@@ -18130,7 +18151,7 @@
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@@ -18154,7 +18175,7 @@
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@@ -18202,7 +18223,7 @@
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@@ -18298,7 +18319,7 @@
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@@ -18346,7 +18367,7 @@
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@@ -18370,7 +18391,7 @@
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@@ -18394,7 +18415,7 @@
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@@ -18418,7 +18439,7 @@
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@@ -18442,7 +18463,7 @@
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@@ -18538,7 +18559,7 @@
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@@ -18586,7 +18607,7 @@
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@@ -18610,7 +18631,7 @@
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@@ -18682,7 +18703,7 @@
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@@ -18754,7 +18775,7 @@
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@@ -18898,7 +18919,7 @@
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@@ -18946,7 +18967,7 @@
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@@ -18970,7 +18991,7 @@
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@@ -19018,7 +19039,7 @@
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@@ -19042,7 +19063,7 @@
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@@ -19114,7 +19135,7 @@
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@@ -19186,7 +19207,7 @@
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@@ -19210,7 +19231,7 @@
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+    "cpu_cost": 0.1, 
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@@ -19234,7 +19255,7 @@
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@@ -19282,7 +19303,7 @@
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@@ -19378,7 +19399,7 @@
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@@ -19450,7 +19471,7 @@
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@@ -19498,7 +19519,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
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@@ -19522,7 +19543,7 @@
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+    "cpu_cost": 0.1, 
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@@ -19546,7 +19567,7 @@
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@@ -19570,7 +19591,7 @@
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@@ -19642,7 +19663,7 @@
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@@ -19690,7 +19711,7 @@
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@@ -19714,7 +19735,7 @@
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@@ -19786,7 +19807,7 @@
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@@ -19858,7 +19879,7 @@
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@@ -20002,7 +20023,7 @@
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@@ -20050,7 +20071,7 @@
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@@ -20074,7 +20095,7 @@
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@@ -20122,7 +20143,7 @@
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@@ -20194,7 +20215,7 @@
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@@ -20266,7 +20287,7 @@
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@@ -20290,7 +20311,7 @@
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@@ -20314,7 +20335,7 @@
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@@ -20362,7 +20383,7 @@
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@@ -20434,7 +20455,7 @@
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@@ -20506,7 +20527,7 @@
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@@ -20530,7 +20551,7 @@
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@@ -20554,7 +20575,7 @@
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@@ -20578,7 +20599,7 @@
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@@ -20602,7 +20623,7 @@
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@@ -20674,7 +20695,7 @@
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@@ -20722,7 +20743,7 @@
       "linux", 
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@@ -20746,7 +20767,7 @@
       "linux", 
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@@ -20822,7 +20843,7 @@
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
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@@ -20900,7 +20921,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
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@@ -21056,7 +21077,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
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@@ -21108,7 +21129,7 @@
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
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@@ -21134,7 +21155,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
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@@ -21186,7 +21207,7 @@
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
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@@ -21212,7 +21233,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
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@@ -21290,7 +21311,7 @@
       "linux", 
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@@ -21368,7 +21389,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
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@@ -21394,7 +21415,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
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@@ -21420,7 +21441,7 @@
       "linux", 
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     "exclude_configs": [
       "msan"
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@@ -21472,7 +21493,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
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@@ -21576,7 +21597,7 @@
       "linux", 
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+    "cpu_cost": 0.1, 
     "exclude_configs": [
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@@ -21654,7 +21675,7 @@
       "linux", 
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     "exclude_configs": [
       "msan"
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@@ -21680,7 +21701,7 @@
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@@ -21706,7 +21727,7 @@
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@@ -23072,7 +23093,7 @@
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@@ -23118,7 +23139,7 @@
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@@ -23141,7 +23162,7 @@
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@@ -23302,7 +23323,7 @@
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@@ -35240,7 +35238,7 @@
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     "exclude_iomgrs": [
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@@ -36559,7 +36557,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -36583,7 +36581,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -36607,7 +36605,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -36631,7 +36629,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -36655,7 +36653,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -36751,7 +36749,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -36799,7 +36797,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -36823,7 +36821,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -36895,7 +36893,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -36943,7 +36941,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37087,7 +37085,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37135,7 +37133,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37159,7 +37157,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37207,7 +37205,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37231,7 +37229,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37303,7 +37301,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37375,7 +37373,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37399,7 +37397,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37423,7 +37421,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37471,7 +37469,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37567,7 +37565,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37639,7 +37637,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37687,7 +37685,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37711,7 +37709,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37735,7 +37733,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37759,7 +37757,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37831,7 +37829,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37879,7 +37877,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37903,7 +37901,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -37975,7 +37973,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38023,7 +38021,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38167,7 +38165,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38215,7 +38213,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38239,7 +38237,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38287,7 +38285,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38359,7 +38357,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38431,7 +38429,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38455,7 +38453,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38479,7 +38477,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38527,7 +38525,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38599,7 +38597,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38671,7 +38669,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38695,7 +38693,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38719,7 +38717,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38743,7 +38741,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38767,7 +38765,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38839,7 +38837,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38887,7 +38885,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38911,7 +38909,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -38987,7 +38985,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39039,7 +39037,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39195,7 +39193,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39247,7 +39245,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39273,7 +39271,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39325,7 +39323,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39351,7 +39349,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39429,7 +39427,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39507,7 +39505,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39533,7 +39531,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39559,7 +39557,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39611,7 +39609,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39715,7 +39713,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39793,7 +39791,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39819,7 +39817,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39845,7 +39843,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39871,7 +39869,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39897,7 +39895,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -39975,7 +39973,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -40027,7 +40025,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -40053,7 +40051,7 @@
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [
       "msan"
     ], 
@@ -40148,7 +40146,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40194,7 +40192,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40378,7 +40376,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40424,7 +40422,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40447,7 +40445,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40493,7 +40491,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40516,7 +40514,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40585,7 +40583,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40654,7 +40652,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40677,7 +40675,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40700,7 +40698,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40723,7 +40721,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40769,7 +40767,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40861,7 +40859,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40884,7 +40882,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40953,7 +40951,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -40999,7 +40997,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -41022,7 +41020,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -41045,7 +41043,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -41068,7 +41066,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -41160,7 +41158,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -41206,7 +41204,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -41229,7 +41227,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -42416,6 +42414,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42453,6 +42452,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42490,6 +42490,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42527,6 +42528,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42564,6 +42566,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42601,6 +42604,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42638,6 +42642,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42675,6 +42680,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42714,6 +42720,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42751,6 +42758,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42790,6 +42798,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42827,6 +42836,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42864,6 +42874,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42901,6 +42912,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42938,6 +42950,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -42975,6 +42988,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43012,6 +43026,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43049,6 +43064,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43086,6 +43102,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43123,6 +43140,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43160,6 +43178,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43197,6 +43216,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43234,6 +43254,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43271,6 +43292,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43308,6 +43330,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43345,6 +43368,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43382,6 +43406,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43419,6 +43444,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43456,6 +43482,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43493,6 +43520,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43530,6 +43558,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43569,6 +43598,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43606,6 +43636,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43645,6 +43676,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43682,6 +43714,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43719,6 +43752,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43756,6 +43790,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43793,6 +43828,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43830,6 +43866,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43867,6 +43904,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43904,6 +43942,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43941,6 +43980,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -43978,6 +44018,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -44015,6 +44056,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -44052,6 +44094,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -44089,6 +44132,7 @@
       "asan-noleaks", 
       "asan-trace-cmp", 
       "basicprof", 
+      "c++-compat", 
       "counters", 
       "dbg", 
       "gcov", 
@@ -85143,6 +85187,29 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6462055064272896"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "mac", 
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6499902139924480"
diff --git a/tools/run_tests/helper_scripts/run_ruby_end2end_tests.sh b/tools/run_tests/helper_scripts/run_ruby_end2end_tests.sh
index 92d6975707389a3352ed677f319144c398504558..6688025260ff0db6e3bcc2378495992b96786788 100755
--- a/tools/run_tests/helper_scripts/run_ruby_end2end_tests.sh
+++ b/tools/run_tests/helper_scripts/run_ruby_end2end_tests.sh
@@ -39,4 +39,6 @@ ruby src/ruby/end2end/channel_state_driver.rb || EXIT_CODE=1
 ruby src/ruby/end2end/channel_closing_driver.rb || EXIT_CODE=1
 ruby src/ruby/end2end/sig_int_during_channel_watch_driver.rb || EXIT_CODE=1
 ruby src/ruby/end2end/killed_client_thread_driver.rb || EXIT_CODE=1
+ruby src/ruby/end2end/forking_client_driver.rb || EXIT_CODE=1
+ruby src/ruby/end2end/grpc_class_init_driver.rb || EXIT_CODE=1
 exit $EXIT_CODE
diff --git a/tools/run_tests/performance/scenario_config.py b/tools/run_tests/performance/scenario_config.py
index 200da5e36db5ea3cd038aa3afe92b3e1d81cd8e2..ce0808829fd559eb9545df2f7ddedaf8adde67f9 100644
--- a/tools/run_tests/performance/scenario_config.py
+++ b/tools/run_tests/performance/scenario_config.py
@@ -513,7 +513,22 @@ class NodeLanguage:
         'node_protobuf_unary_ping_pong_1MB', rpc_type='UNARY',
         client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
         req_size=1024*1024, resp_size=1024*1024,
-        categories=[SCALABLE, SMOKETEST])
+        categories=[SCALABLE])
+
+    sizes = [('1B', 1), ('1KB', 1024), ('10KB', 10 * 1024),
+             ('1MB', 1024 * 1024), ('10MB', 10 * 1024 * 1024),
+             ('100MB', 100 * 1024 * 1024)]
+
+    for size_name, size in sizes:
+      for secure in (True, False):
+        yield _ping_pong_scenario(
+            'node_protobuf_unary_ping_pong_%s_resp_%s' %
+            (size_name, 'secure' if secure else 'insecure'),
+            rpc_type='UNARY',
+            client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+            req_size=0, resp_size=size,
+            secure=secure,
+            categories=[SCALABLE])
 
     # TODO(murgatroid99): fix bugs with this scenario and re-enable it
     # yield _ping_pong_scenario(
@@ -528,11 +543,10 @@ class NodeLanguage:
     #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
     #    unconstrained_client='async')
 
-    # TODO(jtattermusch): make this scenario work
-    #yield _ping_pong_scenario(
-    #    'node_to_cpp_protobuf_async_unary_ping_pong', rpc_type='UNARY',
-    #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
-    #    server_language='c++', async_server_threads=1)
+    yield _ping_pong_scenario(
+        'node_to_cpp_protobuf_async_unary_ping_pong', rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        server_language='c++', async_server_threads=1)
 
     # TODO(jtattermusch): make this scenario work
     #yield _ping_pong_scenario(
@@ -829,6 +843,21 @@ class NodeExpressLanguage:
         unconstrained_client='async',
         categories=[SCALABLE, SMOKETEST])
 
+    sizes = [('1B', 1), ('1KB', 1024), ('10KB', 10 * 1024),
+             ('1MB', 1024 * 1024), ('10MB', 10 * 1024 * 1024),
+             ('100MB', 100 * 1024 * 1024)]
+
+    for size_name, size in sizes:
+      for secure in (True, False):
+        yield _ping_pong_scenario(
+            'node_express_json_unary_ping_pong_%s_resp_%s' %
+            (size_name, 'secure' if secure else 'insecure'),
+            rpc_type='UNARY',
+            client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+            req_size=0, resp_size=size,
+            secure=secure,
+            categories=[SCALABLE])
+
   def __str__(self):
     return 'node_express'
 
diff --git a/tools/run_tests/python_utils/filter_pull_request_tests.py b/tools/run_tests/python_utils/filter_pull_request_tests.py
index e013376295980f5520dc3d80126387b065e3765a..958eb569e014df35809d175651fb0b31270872f6 100644
--- a/tools/run_tests/python_utils/filter_pull_request_tests.py
+++ b/tools/run_tests/python_utils/filter_pull_request_tests.py
@@ -127,6 +127,9 @@ _WHITELIST_DICT = {
   'setup\.py$': [_PYTHON_TEST_SUITE]
 }
 
+# Regex that combines all keys in _WHITELIST_DICT
+_ALL_TRIGGERS = "(" + ")|(".join(_WHITELIST_DICT.keys()) + ")"
+
 # Add all triggers to their respective test suites
 for trigger, test_suites in six.iteritems(_WHITELIST_DICT):
   for test_suite in test_suites:
@@ -169,6 +172,21 @@ def _remove_irrelevant_tests(tests, skippable_labels):
           test.labels[2] not in skippable_labels]
 
 
+def affects_c_cpp(base_branch):
+  """
+  Determines if a pull request's changes affect C/C++. This function exists because
+  there are pull request tests that only test C/C++ code
+  :param base_branch: branch that a pull request is requesting to merge into
+  :return: boolean indicating whether C/C++ changes are made in pull request
+  """
+  changed_files = _get_changed_files(base_branch)
+  # Run all tests if any changed file is not in the whitelist dictionary
+  for changed_file in changed_files:
+    if not re.match(_ALL_TRIGGERS, changed_file):
+      return True
+  return not _can_skip_tests(changed_files, _CPP_TEST_SUITE.triggers + _CORE_TEST_SUITE.triggers)
+
+
 def filter_tests(tests, base_branch):
   """
   Filters out tests that are safe to ignore
@@ -181,11 +199,9 @@ def filter_tests(tests, base_branch):
     print('  %s' % changed_file)
   print('')
 
-  # Regex that combines all keys in _WHITELIST_DICT
-  all_triggers = "(" + ")|(".join(_WHITELIST_DICT.keys()) + ")"
-  # Check if all tests have to be run
+  # Run all tests if any changed file is not in the whitelist dictionary
   for changed_file in changed_files:
-    if not re.match(all_triggers, changed_file):
+    if not re.match(_ALL_TRIGGERS, changed_file):
       return(tests)
   # Figure out which language and platform tests to run
   skippable_labels = []
@@ -196,4 +212,3 @@ def filter_tests(tests, base_branch):
         skippable_labels.append(label)
   tests = _remove_irrelevant_tests(tests, skippable_labels)
   return tests
-
diff --git a/tools/run_tests/python_utils/jobset.py b/tools/run_tests/python_utils/jobset.py
index 5d812f28ee980a140b270b0bbaf6a6bc8614cea8..460f359cf3579815785cbdc5f1274a47edbc7244 100755
--- a/tools/run_tests/python_utils/jobset.py
+++ b/tools/run_tests/python_utils/jobset.py
@@ -348,7 +348,7 @@ class Jobset(object):
   """Manages one run of jobs."""
 
   def __init__(self, check_cancelled, maxjobs, newline_on_success, travis,
-               stop_on_failure, add_env, quiet_success):
+               stop_on_failure, add_env, quiet_success, max_time):
     self._running = set()
     self._check_cancelled = check_cancelled
     self._cancelled = False
@@ -360,6 +360,7 @@ class Jobset(object):
     self._stop_on_failure = stop_on_failure
     self._add_env = add_env
     self._quiet_success = quiet_success
+    self._max_time = max_time
     self.resultset = {}
     self._remaining = None
     self._start_time = time.time()
@@ -379,6 +380,12 @@ class Jobset(object):
   def start(self, spec):
     """Start a job. Return True on success, False on failure."""
     while True:
+      if self._max_time > 0 and time.time() - self._start_time > self._max_time:
+        skipped_job_result = JobResult()
+        skipped_job_result.state = 'SKIPPED'
+        message('SKIPPED', spec.shortname, do_newline=True)
+        self.resultset[spec.shortname] = [skipped_job_result]
+        return True
       if self.cancelled(): return False
       current_cpu_cost = self.cpu_cost()
       if current_cpu_cost == 0: break
@@ -474,7 +481,8 @@ def run(cmdlines,
         stop_on_failure=False,
         add_env={},
         skip_jobs=False,
-        quiet_success=False):
+        quiet_success=False,
+        max_time=-1):
   if skip_jobs:
     resultset = {}
     skipped_job_result = JobResult()
@@ -486,7 +494,7 @@ def run(cmdlines,
   js = Jobset(check_cancelled,
               maxjobs if maxjobs is not None else _DEFAULT_MAX_JOBS,
               newline_on_success, travis, stop_on_failure, add_env,
-              quiet_success)
+              quiet_success, max_time)
   for cmdline, remaining in tag_remaining(cmdlines):
     if not js.start(cmdline):
       break
diff --git a/tools/run_tests/run_interop_tests.py b/tools/run_tests/run_interop_tests.py
index d2bf529fef33a59503cfac736fb69df43093e6e0..44e93eb9cc3c6bd9752125f24b520800bfa12159 100755
--- a/tools/run_tests/run_interop_tests.py
+++ b/tools/run_tests/run_interop_tests.py
@@ -371,6 +371,39 @@ class PHP7Language:
   def __str__(self):
     return 'php7'
 
+class ObjcLanguage:
+
+  def __init__(self):
+    self.client_cwd = 'src/objective-c/tests'
+    self.safename = str(self)
+
+  def client_cmd(self, args):
+    # from args, extract the server port and craft xcodebuild command out of it
+    for arg in args:
+      port = re.search('--server_port=(\d+)', arg)
+      if port:
+        portnum = port.group(1)
+        cmdline = 'pod install && xcodebuild -workspace Tests.xcworkspace -scheme InteropTestsLocalSSL -destination name="iPhone 6" HOST_PORT_LOCALSSL=localhost:%s test'%portnum
+        return [cmdline]
+
+  def cloud_to_prod_env(self):
+    return {}
+
+  def global_env(self):
+    return {}
+
+  def unimplemented_test_cases(self):
+    # ObjC test runs all cases with the same command. It ignores the testcase
+    # cmdline argument. Here we return all but one test cases as unimplemented,
+    # and depend upon ObjC test's behavior that it runs all cases even when
+    # we tell it to run just one.
+    return _TEST_CASES[1:] + _SKIP_COMPRESSION + _SKIP_DATA_FRAME_PADDING
+
+  def unimplemented_test_cases_server(self):
+    return _SKIP_COMPRESSION
+
+  def __str__(self):
+    return 'objc'
 
 class RubyLanguage:
 
@@ -402,7 +435,6 @@ class RubyLanguage:
   def __str__(self):
     return 'ruby'
 
-
 class PythonLanguage:
 
   def __init__(self):
@@ -460,6 +492,7 @@ _LANGUAGES = {
     'node' : NodeLanguage(),
     'php' :  PHPLanguage(),
     'php7' :  PHP7Language(),
+    'objc' : ObjcLanguage(),
     'ruby' : RubyLanguage(),
     'python' : PythonLanguage(),
 }
@@ -667,7 +700,8 @@ def cloud_to_cloud_jobspec(language, test_case, server_name, server_host,
     cwd = language.client_cwd
 
   environ = language.global_env()
-  if docker_image:
+  if docker_image and language.safename != 'objc':
+    # we can't run client in docker for objc.
     container_name = dockerjob.random_name('interop_client_%s' % language.safename)
     cmdline = docker_run_cmdline(cmdline,
                                  image=docker_image,
@@ -820,7 +854,7 @@ argp.add_argument('-l', '--language',
                   choices=['all'] + sorted(_LANGUAGES),
                   nargs='+',
                   default=['all'],
-                  help='Clients to run.')
+                  help='Clients to run. Objc client can be only run on OSX.')
 argp.add_argument('-j', '--jobs', default=multiprocessing.cpu_count(), type=int)
 argp.add_argument('--cloud_to_prod',
                   default=False,
@@ -913,9 +947,13 @@ if not args.use_docker and servers:
   print('Running interop servers is only supported with --use_docker option enabled.')
   sys.exit(1)
 
+
+# we want to include everything but objc in 'all'
+# because objc won't run on non-mac platforms
+all_but_objc = set(six.iterkeys(_LANGUAGES)) - set(['objc'])
 languages = set(_LANGUAGES[l]
                 for l in itertools.chain.from_iterable(
-                    six.iterkeys(_LANGUAGES) if x == 'all' else [x]
+                    all_but_objc if x == 'all' else [x]
                     for x in args.language))
 
 languages_http2_clients_for_http2_server_interop = set()
@@ -942,6 +980,9 @@ if args.use_docker:
 
   build_jobs = []
   for l in languages_to_build:
+    if str(l) == 'objc':
+      # we don't need to build a docker image for objc
+      continue
     job = build_interop_image_jobspec(l)
     docker_images[str(l)] = job.tag
     build_jobs.append(job)
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index cfa7071e002db3dd7513ae850b3cdf4b68f65d4e..a1ec1b2f4570d9ab9424f2b28c739c81758d2505 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -429,7 +429,7 @@ class NodeLanguage(object):
     # we should specify in the compiler argument
     _check_compiler(self.args.compiler, ['default', 'node0.12',
                                          'node4', 'node5', 'node6',
-                                         'node7', 'electron1.3'])
+                                         'node7', 'electron1.3', 'electron1.6'])
     if args.iomgr_platform == "uv":
       self.use_uv = True
     else:
@@ -1178,7 +1178,7 @@ argp.add_argument('--compiler',
                            'vs2013', 'vs2015',
                            'python2.7', 'python3.4', 'python3.5', 'python3.6', 'pypy', 'pypy3', 'python_alpine',
                            'node0.12', 'node4', 'node5', 'node6', 'node7',
-                           'electron1.3',
+                           'electron1.3', 'electron1.6',
                            'coreclr',
                            'cmake'],
                   default='default',
@@ -1210,6 +1210,7 @@ argp.add_argument('--quiet_success',
                        'Useful when running many iterations of each test (argument -n).')
 argp.add_argument('--force_default_poller', default=False, action='store_const', const=True,
                   help='Dont try to iterate over many polling strategies when they exist')
+argp.add_argument('--max_time', default=-1, type=int, help='Maximum test runtime in seconds')
 args = argp.parse_args()
 
 if args.force_default_poller:
@@ -1465,7 +1466,7 @@ def _build_and_run(
            not re.search(args.regex_exclude, spec.shortname))))
     # When running on travis, we want out test runs to be as similar as possible
     # for reproducibility purposes.
-    if args.travis:
+    if args.travis and args.max_time <= 0:
       massaged_one_run = sorted(one_run, key=lambda x: x.shortname)
     else:
       # whereas otherwise, we want to shuffle things up to give all tests a
@@ -1493,7 +1494,7 @@ def _build_and_run(
         all_runs, check_cancelled, newline_on_success=newline_on_success,
         travis=args.travis, maxjobs=args.jobs,
         stop_on_failure=args.stop_on_failure,
-        quiet_success=args.quiet_success)
+        quiet_success=args.quiet_success, max_time=args.max_time)
     if resultset:
       for k, v in sorted(resultset.items()):
         num_runs, num_failures = _calculate_num_runs_failures(v)
diff --git a/tools/run_tests/run_tests_matrix.py b/tools/run_tests/run_tests_matrix.py
index a00d84fd9a77f8f4d75c9bf483ae163a60db8cd8..02f0ec5eff16ae82bd90312dc98957d4d2786d0d 100755
--- a/tools/run_tests/run_tests_matrix.py
+++ b/tools/run_tests/run_tests_matrix.py
@@ -198,7 +198,7 @@ def _create_portability_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS)
                                 extra_args=extra_args,
                                 inner_jobs=inner_jobs)
 
-  for compiler in ['gcc4.8', 'gcc5.3', 'gcc_musl',
+  for compiler in ['gcc4.8', 'gcc5.3',
                    'clang3.5', 'clang3.6', 'clang3.7']:
     test_jobs += _generate_jobs(languages=['c++'],
                                 configs=['dbg'],
@@ -257,15 +257,6 @@ def _create_portability_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS)
                               extra_args=extra_args,
                               inner_jobs=inner_jobs)
 
-  test_jobs += _generate_jobs(languages=['python'],
-                              configs=['dbg'],
-                              platforms=['linux'],
-                              arch='default',
-                              compiler='python_alpine',
-                              labels=['portability'],
-                              extra_args=extra_args,
-                              inner_jobs=inner_jobs)
-
   test_jobs += _generate_jobs(languages=['csharp'],
                               configs=['dbg'],
                               platforms=['linux'],
@@ -287,7 +278,8 @@ def _create_portability_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS)
                               configs=['dbg'],
                               platforms=['linux'],
                               arch='default',
-                              compiler='electron1.3',
+                              compiler='electron1.6',
+                              iomgr_platform='uv',
                               labels=['portability'],
                               extra_args=extra_args,
                               inner_jobs=inner_jobs)
@@ -385,6 +377,9 @@ if __name__ == "__main__":
   argp.add_argument('-n', '--runs_per_test', default=1, type=_runs_per_test_type,
                     help='How many times to run each tests. >1 runs implies ' +
                     'omitting passing test from the output & reports.')
+  argp.add_argument('--max_time', default=-1, type=int,
+                    help='Maximum amount of time to run tests for' +
+                         '(other tests will be skipped)')
   args = argp.parse_args()
 
   extra_args = []
@@ -396,6 +391,8 @@ if __name__ == "__main__":
     extra_args.append('-n')
     extra_args.append('%s' % args.runs_per_test)
     extra_args.append('--quiet_success')
+  if args.max_time > 0:
+    extra_args.extend(('--max_time', '%d' % args.max_time))
 
   all_jobs = _create_test_jobs(extra_args=extra_args, inner_jobs=args.inner_jobs) + \
              _create_portability_test_jobs(extra_args=extra_args, inner_jobs=args.inner_jobs)
diff --git a/tools/run_tests/sanity/check_submodules.sh b/tools/run_tests/sanity/check_submodules.sh
index eaf5a0580e5e4ac88873da7e8aacece64c380018..0a9c1cc046cdb70ca0d7113c774b00186e684b53 100755
--- a/tools/run_tests/sanity/check_submodules.sh
+++ b/tools/run_tests/sanity/check_submodules.sh
@@ -46,9 +46,9 @@ cat << EOF | awk '{ print $1 }' | sort > $want_submodules
  886e7d75368e3f4fab3f4d0d3584e4abfc557755 third_party/boringssl-with-bazel (version_for_cocoapods_7.0-857-g886e7d7)
  30dbc81fb5ffdc98ea9b14b1918bfe4e8779b26e third_party/gflags (v2.2.0)
  ec44c6c1675c25b9827aacd08c02433cccde7780 third_party/googletest (release-1.8.0)
- 4a0dd03e52e09332c8fd0f8f26a8e0ae9f911182 third_party/protobuf (v3.1.0-alpha-1-548-g4a0dd03e)
+ 593e917c176b5bc5aafa57bf9f6030d749d91cd5 third_party/protobuf (v3.1.0-alpha-1-326-g593e917)
  bcad91771b7f0bff28a1cac1981d7ef2b9bcef3c third_party/thrift (bcad917)
- 50893291621658f355bc5b4d450a8d06a563053d third_party/zlib (v1.2.8)
+ cacf7f1d4e3d44d871b605da3b647f07d718623f third_party/zlib (v1.2.11)
  7691f773af79bf75a62d1863fd0f13ebf9dc51b1 third_party/cares/cares (1.12.0)
 EOF
 
diff --git a/vsprojects/README.md b/vsprojects/README.md
index f1663d254850707d657863b4d5a8d1bddb2f93a1..1f0cdc24ba709e763ed59a9212009fab9026ebbf 100644
--- a/vsprojects/README.md
+++ b/vsprojects/README.md
@@ -1,10 +1,10 @@
-#Pre-generated MS Visual Studio project & solution files
+# Pre-generated MS Visual Studio project & solution files
 
 Versions 2013 and 2015 are both supported. You can use [their respective
 community
 editions](https://www.visualstudio.com/en-us/downloads/download-visual-studio-vs.aspx).
 
-#Building
+# Building
 We are using [NuGet](http://www.nuget.org) to pull zlib and openssl dependencies.
 If you don't have Visual Studio NuGet plugin installed, you'll need to
 download nuget.exe from the web and manually restore the NuGet packages.
@@ -19,7 +19,7 @@ After that, you can build the solution using one of these options:
   1. open `grpc.sln` with Visual Studio and hit "Build".
   2. build from commandline using `msbuild grpc.sln /p:Configuration=Debug`
 
-#C/C++ Test Dependencies
+# C/C++ Test Dependencies
    * gtest isn't available as a git repo like the other dependencies.  download it and add it to `/third_party/gtest/` (the folder will end up with `/build-aux/`, `/cmake/`, `/codegear/`, etc. folders in it).  
     * if using vs2013: open/import the gtest solution in `/msvc/`, and save over the first solution (you will have to change it from read-only).  change all projects to use `/MDd` (Property Pages - C/C++ - Code Generation - Runtime Library) and build. This is a "multithreaded debug" setting and it needs to match grpc.
     * build all
diff --git a/vsprojects/buildtests_c.sln b/vsprojects/buildtests_c.sln
index 1e8336c54efca2c823dc34fe7c90095fcec41fde..539f474f9ec59a07ac358a2ef628f896b861d03a 100644
--- a/vsprojects/buildtests_c.sln
+++ b/vsprojects/buildtests_c.sln
@@ -317,6 +317,17 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "error_test", "vcxproj\test\
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fake_resolver_test", "vcxproj\test\fake_resolver_test\fake_resolver_test.vcxproj", "{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fling_client", "vcxproj\test\fling_client\fling_client.vcxproj", "{0647D598-9611-F659-EA36-DF995C9F736B}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -1429,6 +1440,17 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "slice_buffer_test", "vcxpro
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "slice_hash_table_test", "vcxproj\test\slice_hash_table_test\slice_hash_table_test.vcxproj", "{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "slice_string_helpers_test", "vcxproj\test\slice_string_helpers_test\slice_string_helpers_test.vcxproj", "{419167BB-C3F5-DDEA-403A-394D1902DE65}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -2116,6 +2138,22 @@ Global
 		{42720233-A6D4-66BC-CCA2-06B57261D0B3}.Release-DLL|Win32.Build.0 = Release|Win32
 		{42720233-A6D4-66BC-CCA2-06B57261D0B3}.Release-DLL|x64.ActiveCfg = Release|x64
 		{42720233-A6D4-66BC-CCA2-06B57261D0B3}.Release-DLL|x64.Build.0 = Release|x64
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Debug|Win32.ActiveCfg = Debug|Win32
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Debug|x64.ActiveCfg = Debug|x64
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Release|Win32.ActiveCfg = Release|Win32
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Release|x64.ActiveCfg = Release|x64
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Debug|Win32.Build.0 = Debug|Win32
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Debug|x64.Build.0 = Debug|x64
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Release|Win32.Build.0 = Release|Win32
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Release|x64.Build.0 = Release|x64
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Debug-DLL|x64.Build.0 = Debug|x64
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Release-DLL|Win32.Build.0 = Release|Win32
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Release-DLL|x64.ActiveCfg = Release|x64
+		{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}.Release-DLL|x64.Build.0 = Release|x64
 		{0647D598-9611-F659-EA36-DF995C9F736B}.Debug|Win32.ActiveCfg = Debug|Win32
 		{0647D598-9611-F659-EA36-DF995C9F736B}.Debug|x64.ActiveCfg = Debug|x64
 		{0647D598-9611-F659-EA36-DF995C9F736B}.Release|Win32.ActiveCfg = Release|Win32
@@ -3796,6 +3834,22 @@ Global
 		{F0FA4A41-5695-580A-DCDA-EC719CB041B0}.Release-DLL|Win32.Build.0 = Release|Win32
 		{F0FA4A41-5695-580A-DCDA-EC719CB041B0}.Release-DLL|x64.ActiveCfg = Release|x64
 		{F0FA4A41-5695-580A-DCDA-EC719CB041B0}.Release-DLL|x64.Build.0 = Release|x64
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Debug|Win32.ActiveCfg = Debug|Win32
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Debug|x64.ActiveCfg = Debug|x64
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Release|Win32.ActiveCfg = Release|Win32
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Release|x64.ActiveCfg = Release|x64
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Debug|Win32.Build.0 = Debug|Win32
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Debug|x64.Build.0 = Debug|x64
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Release|Win32.Build.0 = Release|Win32
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Release|x64.Build.0 = Release|x64
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Debug-DLL|x64.Build.0 = Debug|x64
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Release-DLL|Win32.Build.0 = Release|Win32
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Release-DLL|x64.ActiveCfg = Release|x64
+		{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}.Release-DLL|x64.Build.0 = Release|x64
 		{419167BB-C3F5-DDEA-403A-394D1902DE65}.Debug|Win32.ActiveCfg = Debug|Win32
 		{419167BB-C3F5-DDEA-403A-394D1902DE65}.Debug|x64.ActiveCfg = Debug|x64
 		{419167BB-C3F5-DDEA-403A-394D1902DE65}.Release|Win32.ActiveCfg = Release|Win32
diff --git a/vsprojects/vcxproj/grpc++/grpc++.vcxproj b/vsprojects/vcxproj/grpc++/grpc++.vcxproj
index d62b5541ce0992f43ad9e4ecc6dbae9e93d00191..424af0d9e72bfa583cbf0b262012ee1f80f615af 100644
--- a/vsprojects/vcxproj/grpc++/grpc++.vcxproj
+++ b/vsprojects/vcxproj/grpc++/grpc++.vcxproj
@@ -328,7 +328,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\stub_options.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\sync_stream.h" />
diff --git a/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters b/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
index ef3862daa8d8fc96ab9225972a8564f927e3ff2e..a2f74655d0f300b5d70a62c35c61802201ea9502 100644
--- a/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
@@ -708,9 +708,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h">
-      <Filter>include\grpc++\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
index c060f98b34a2def306c2c6c4fa283cedb82c6795..165ebe64f596c655dbb0b665b3b65686ce6cd597 100644
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
@@ -172,7 +172,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\stub_options.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\sync_stream.h" />
diff --git a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
index 0623e421b217967681cbc29f6d616142cf052e98..d9aa1e3cc92b382c7f6e676cc245deee48d62d9f 100644
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
@@ -111,9 +111,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h">
-      <Filter>include\grpc++\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
index 672768876916944bcbfce5afd8e151487527450a..3f8a2f27572e6cb79fe4f1bcf5be9765065f8a15 100644
--- a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
@@ -328,7 +328,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\stub_options.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\sync_stream.h" />
diff --git a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
index d39756b269d91e8ef46740c366d7d26538c36e12..929501a56ce67dad6bd9c512b3ffff36ef0e87e7 100644
--- a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
@@ -693,9 +693,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h">
-      <Filter>include\grpc++\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj
index e3f081ba2abe37e68fd8b5853dd83de3d194a618..ccb0b521efff09b527b8035bcd8472c87ebbd52b 100644
--- a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj
+++ b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj
@@ -185,7 +185,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\stub_options.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\sync_stream.h" />
diff --git a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters
index 09e7c70e74a973cceeecfd76cf171498f3c0bca3..18b331ccb1e11b5c8c0236ed23185781300e06e3 100644
--- a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters
+++ b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters
@@ -96,9 +96,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h">
-      <Filter>include\grpc++\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj
index 2cd226c6d80fccb1ebad700f21e039dc60b837ea..d4ac0fbc975578c4fc46836684e7a185cfb4dade 100644
--- a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj
+++ b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj
@@ -185,7 +185,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\stub_options.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\sync_stream.h" />
@@ -256,6 +255,14 @@
     <ClCompile Include="$(SolutionDir)\..\src\cpp\codegen\codegen_init.cc">
     </ClCompile>
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc\grpc.vcxproj">
+      <Project>{29D16885-7228-4C31-81ED-5F9187C7F2A9}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr\gpr.vcxproj">
+      <Project>{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}</Project>
+    </ProjectReference>
+  </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
diff --git a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters
index 66afc8f2fc1392f7a4db83d60d9af23d82e6017c..31680cdc41384ab4c142ef96b7431eec5fe11ab1 100644
--- a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters
+++ b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters
@@ -99,9 +99,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h">
-      <Filter>include\grpc++\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/fake_resolver_test/fake_resolver_test.vcxproj b/vsprojects/vcxproj/test/fake_resolver_test/fake_resolver_test.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..8ea721dd7b47a3ed4cfe809b4c575f00f92b2910
--- /dev/null
+++ b/vsprojects/vcxproj/test/fake_resolver_test/fake_resolver_test.vcxproj
@@ -0,0 +1,199 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\1.0.204.1.props')" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}</ProjectGuid>
+    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
+    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)\..\vsprojects\global.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\openssl.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\winsock.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\zlib.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>fake_resolver_test</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Debug</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Debug</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'">
+    <TargetName>fake_resolver_test</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Release</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Release</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\test\core\client_channel\resolvers\fake_resolver_test.c">
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc_test_util\grpc_test_util.vcxproj">
+      <Project>{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc\grpc.vcxproj">
+      <Project>{29D16885-7228-4C31-81ED-5F9187C7F2A9}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr_test_util\gpr_test_util.vcxproj">
+      <Project>{EAB0A629-17A9-44DB-B5FF-E91A721FE037}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr\gpr.vcxproj">
+      <Project>{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies\grpc.dependencies.zlib.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies\grpc.dependencies.zlib.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies\grpc.dependencies.openssl.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies\grpc.dependencies.openssl.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets')" />
+  </Target>
+</Project>
+
diff --git a/vsprojects/vcxproj/test/fake_resolver_test/fake_resolver_test.vcxproj.filters b/vsprojects/vcxproj/test/fake_resolver_test/fake_resolver_test.vcxproj.filters
new file mode 100644
index 0000000000000000000000000000000000000000..353cae2b078debb5606baa1bee20cbf4e93a30cd
--- /dev/null
+++ b/vsprojects/vcxproj/test/fake_resolver_test/fake_resolver_test.vcxproj.filters
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\test\core\client_channel\resolvers\fake_resolver_test.c">
+      <Filter>test\core\client_channel\resolvers</Filter>
+    </ClCompile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Filter Include="test">
+      <UniqueIdentifier>{05f58640-4b7c-c233-bf86-f119fe270ba1}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\core">
+      <UniqueIdentifier>{caeef88d-baf6-603c-83b0-84b1009be480}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\core\client_channel">
+      <UniqueIdentifier>{c5bba556-fd85-f7b4-99b7-8b1eeb4dfcb2}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\core\client_channel\resolvers">
+      <UniqueIdentifier>{eff74a86-6a4c-b68c-0330-6901d992c5c7}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+</Project>
+
diff --git a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj
index d83a496e3b8815bf02831c8c7a6ebacce83c0ab4..6133d7e29010262ff257809e58bfd917d07d5143 100644
--- a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj
+++ b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj
@@ -186,7 +186,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\stub_options.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\sync_stream.h" />
diff --git a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters
index 64e3caf74066cc91bd23531af1ef7ae44e9ce84a..08ea8e9dae44194d6284f2623300fd875a065da0 100644
--- a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters
@@ -90,9 +90,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h">
-      <Filter>include\grpc++\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj b/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj
index 13a5bb491002733e181e85e1cc126729ea4bd5d4..397e7b6901f89b21d5bed7aa202c386dcfa1df68 100644
--- a/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj
+++ b/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj
@@ -185,7 +185,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\stub_options.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\sync_stream.h" />
diff --git a/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj.filters b/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj.filters
index 189a3367141dd6c2ac8db2ad040400d899beea98..2f5a2a065f3d1491ca62a84f2a24adde0d19540c 100644
--- a/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj.filters
@@ -81,9 +81,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_code_enum.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\status_helper.h">
-      <Filter>include\grpc++\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\string_ref.h">
       <Filter>include\grpc++\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/slice_hash_table_test/slice_hash_table_test.vcxproj b/vsprojects/vcxproj/test/slice_hash_table_test/slice_hash_table_test.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..0fccfdcaa5607878b0bf4a9c19979bdc56d4a302
--- /dev/null
+++ b/vsprojects/vcxproj/test/slice_hash_table_test/slice_hash_table_test.vcxproj
@@ -0,0 +1,199 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/vsprojects/vcxproj/test/slice_hash_table_test/slice_hash_table_test.vcxproj.filters b/vsprojects/vcxproj/test/slice_hash_table_test/slice_hash_table_test.vcxproj.filters
new file mode 100644
index 0000000000000000000000000000000000000000..19738526781103dec73cd1f2e3206180981cb221
--- /dev/null
+++ b/vsprojects/vcxproj/test/slice_hash_table_test/slice_hash_table_test.vcxproj.filters
@@ -0,0 +1,21 @@
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