diff --git a/BUILD b/BUILD
index 4e04b8c..5fe252c 100644
--- a/BUILD
+++ b/BUILD
@@ -446,6 +446,7 @@
         "src/core/lib/support/env_linux.cc",
         "src/core/lib/support/env_posix.cc",
         "src/core/lib/support/env_windows.cc",
+        "src/core/lib/support/fork.cc",
         "src/core/lib/support/histogram.cc",
         "src/core/lib/support/host_port.cc",
         "src/core/lib/support/log.cc",
@@ -485,6 +486,7 @@
         "src/core/lib/support/atomic_with_atm.h",
         "src/core/lib/support/atomic_with_std.h",
         "src/core/lib/support/env.h",
+        "src/core/lib/support/fork.h",
         "src/core/lib/support/memory.h",
         "src/core/lib/support/vector.h",
         "src/core/lib/support/manual_constructor.h",
@@ -494,6 +496,7 @@
         "src/core/lib/support/stack_lockfree.h",
         "src/core/lib/support/string.h",
         "src/core/lib/support/string_windows.h",
+        "src/core/lib/support/thd_internal.h",
         "src/core/lib/support/time_precise.h",
         "src/core/lib/support/tmpfile.h",
     ],
@@ -513,6 +516,7 @@
         "include/grpc/impl/codegen/atm_gcc_atomic.h",
         "include/grpc/impl/codegen/atm_gcc_sync.h",
         "include/grpc/impl/codegen/atm_windows.h",
+        "include/grpc/impl/codegen/fork.h",
         "include/grpc/impl/codegen/gpr_slice.h",
         "include/grpc/impl/codegen/gpr_types.h",
         "include/grpc/impl/codegen/port_platform.h",
@@ -572,6 +576,8 @@
         "src/core/lib/iomgr/ev_windows.cc",
         "src/core/lib/iomgr/exec_ctx.cc",
         "src/core/lib/iomgr/executor.cc",
+        "src/core/lib/iomgr/fork_posix.cc",
+        "src/core/lib/iomgr/fork_windows.cc",
         "src/core/lib/iomgr/gethostname_fallback.cc",
         "src/core/lib/iomgr/gethostname_host_name_max.cc",
         "src/core/lib/iomgr/gethostname_sysconf.cc",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 11fc050..290306f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@
 cmake_minimum_required(VERSION 2.8)
 
 set(PACKAGE_NAME      "grpc")
-set(PACKAGE_VERSION   "1.8.0-dev")
+set(PACKAGE_VERSION   "1.7.2")
 set(PACKAGE_STRING    "${PACKAGE_NAME} ${PACKAGE_VERSION}")
 set(PACKAGE_TARNAME   "${PACKAGE_NAME}-${PACKAGE_VERSION}")
 set(PACKAGE_BUGREPORT "https://github.com/grpc/grpc/issues/")
@@ -797,6 +797,7 @@
   src/core/lib/support/env_linux.cc
   src/core/lib/support/env_posix.cc
   src/core/lib/support/env_windows.cc
+  src/core/lib/support/fork.cc
   src/core/lib/support/histogram.cc
   src/core/lib/support/host_port.cc
   src/core/lib/support/log.cc
@@ -892,6 +893,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -992,6 +994,8 @@
   src/core/lib/iomgr/ev_windows.cc
   src/core/lib/iomgr/exec_ctx.cc
   src/core/lib/iomgr/executor.cc
+  src/core/lib/iomgr/fork_posix.cc
+  src/core/lib/iomgr/fork_windows.cc
   src/core/lib/iomgr/gethostname_fallback.cc
   src/core/lib/iomgr/gethostname_host_name_max.cc
   src/core/lib/iomgr/gethostname_sysconf.cc
@@ -1258,6 +1262,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -1270,6 +1275,7 @@
   include/grpc/byte_buffer.h
   include/grpc/byte_buffer_reader.h
   include/grpc/compression.h
+  include/grpc/fork.h
   include/grpc/grpc.h
   include/grpc/grpc_posix.h
   include/grpc/grpc_security_constants.h
@@ -1332,6 +1338,8 @@
   src/core/lib/iomgr/ev_windows.cc
   src/core/lib/iomgr/exec_ctx.cc
   src/core/lib/iomgr/executor.cc
+  src/core/lib/iomgr/fork_posix.cc
+  src/core/lib/iomgr/fork_windows.cc
   src/core/lib/iomgr/gethostname_fallback.cc
   src/core/lib/iomgr/gethostname_host_name_max.cc
   src/core/lib/iomgr/gethostname_sysconf.cc
@@ -1569,6 +1577,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -1654,6 +1663,8 @@
   src/core/lib/iomgr/ev_windows.cc
   src/core/lib/iomgr/exec_ctx.cc
   src/core/lib/iomgr/executor.cc
+  src/core/lib/iomgr/fork_posix.cc
+  src/core/lib/iomgr/fork_windows.cc
   src/core/lib/iomgr/gethostname_fallback.cc
   src/core/lib/iomgr/gethostname_host_name_max.cc
   src/core/lib/iomgr/gethostname_sysconf.cc
@@ -1851,6 +1862,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -1920,6 +1932,8 @@
   src/core/lib/iomgr/ev_windows.cc
   src/core/lib/iomgr/exec_ctx.cc
   src/core/lib/iomgr/executor.cc
+  src/core/lib/iomgr/fork_posix.cc
+  src/core/lib/iomgr/fork_windows.cc
   src/core/lib/iomgr/gethostname_fallback.cc
   src/core/lib/iomgr/gethostname_host_name_max.cc
   src/core/lib/iomgr/gethostname_sysconf.cc
@@ -2117,6 +2131,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -2171,6 +2186,8 @@
   src/core/lib/iomgr/ev_windows.cc
   src/core/lib/iomgr/exec_ctx.cc
   src/core/lib/iomgr/executor.cc
+  src/core/lib/iomgr/fork_posix.cc
+  src/core/lib/iomgr/fork_windows.cc
   src/core/lib/iomgr/gethostname_fallback.cc
   src/core/lib/iomgr/gethostname_host_name_max.cc
   src/core/lib/iomgr/gethostname_sysconf.cc
@@ -2404,6 +2421,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -2415,6 +2433,7 @@
   include/grpc/byte_buffer.h
   include/grpc/byte_buffer_reader.h
   include/grpc/compression.h
+  include/grpc/fork.h
   include/grpc/grpc.h
   include/grpc/grpc_posix.h
   include/grpc/grpc_security_constants.h
@@ -2685,6 +2704,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -2696,6 +2716,7 @@
   include/grpc/byte_buffer.h
   include/grpc/byte_buffer_reader.h
   include/grpc/compression.h
+  include/grpc/fork.h
   include/grpc/grpc.h
   include/grpc/grpc_posix.h
   include/grpc/grpc_security_constants.h
@@ -2921,6 +2942,8 @@
   src/core/lib/iomgr/ev_windows.cc
   src/core/lib/iomgr/exec_ctx.cc
   src/core/lib/iomgr/executor.cc
+  src/core/lib/iomgr/fork_posix.cc
+  src/core/lib/iomgr/fork_windows.cc
   src/core/lib/iomgr/gethostname_fallback.cc
   src/core/lib/iomgr/gethostname_host_name_max.cc
   src/core/lib/iomgr/gethostname_sysconf.cc
@@ -3170,6 +3193,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -3181,6 +3205,7 @@
   include/grpc/byte_buffer.h
   include/grpc/byte_buffer_reader.h
   include/grpc/compression.h
+  include/grpc/fork.h
   include/grpc/grpc.h
   include/grpc/grpc_posix.h
   include/grpc/grpc_security_constants.h
@@ -3607,6 +3632,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -3748,6 +3774,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -3920,6 +3947,7 @@
   include/grpc/impl/codegen/atm_gcc_atomic.h
   include/grpc/impl/codegen/atm_gcc_sync.h
   include/grpc/impl/codegen/atm_windows.h
+  include/grpc/impl/codegen/fork.h
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
@@ -3931,6 +3959,7 @@
   include/grpc/byte_buffer.h
   include/grpc/byte_buffer_reader.h
   include/grpc/compression.h
+  include/grpc/fork.h
   include/grpc/grpc.h
   include/grpc/grpc_posix.h
   include/grpc/grpc_security_constants.h
diff --git a/Makefile b/Makefile
index fd8b35e..e41e716 100644
--- a/Makefile
+++ b/Makefile
@@ -410,9 +410,9 @@
 Q = @
 endif
 
-CORE_VERSION = 5.0.0-dev
-CPP_VERSION = 1.8.0-dev
-CSHARP_VERSION = 1.8.0-dev
+CORE_VERSION = 5.0.0
+CPP_VERSION = 1.7.2
+CSHARP_VERSION = 1.7.2
 
 CPPFLAGS_NO_ARCH += $(addprefix -I, $(INCLUDES)) $(addprefix -D, $(DEFINES))
 CPPFLAGS += $(CPPFLAGS_NO_ARCH) $(ARCH_FLAGS)
@@ -2812,6 +2812,7 @@
     src/core/lib/support/env_linux.cc \
     src/core/lib/support/env_posix.cc \
     src/core/lib/support/env_windows.cc \
+    src/core/lib/support/fork.cc \
     src/core/lib/support/histogram.cc \
     src/core/lib/support/host_port.cc \
     src/core/lib/support/log.cc \
@@ -2876,6 +2877,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -2982,6 +2984,8 @@
     src/core/lib/iomgr/ev_windows.cc \
     src/core/lib/iomgr/exec_ctx.cc \
     src/core/lib/iomgr/executor.cc \
+    src/core/lib/iomgr/fork_posix.cc \
+    src/core/lib/iomgr/fork_windows.cc \
     src/core/lib/iomgr/gethostname_fallback.cc \
     src/core/lib/iomgr/gethostname_host_name_max.cc \
     src/core/lib/iomgr/gethostname_sysconf.cc \
@@ -3212,6 +3216,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -3224,6 +3229,7 @@
     include/grpc/byte_buffer.h \
     include/grpc/byte_buffer_reader.h \
     include/grpc/compression.h \
+    include/grpc/fork.h \
     include/grpc/grpc.h \
     include/grpc/grpc_posix.h \
     include/grpc/grpc_security_constants.h \
@@ -3321,6 +3327,8 @@
     src/core/lib/iomgr/ev_windows.cc \
     src/core/lib/iomgr/exec_ctx.cc \
     src/core/lib/iomgr/executor.cc \
+    src/core/lib/iomgr/fork_posix.cc \
+    src/core/lib/iomgr/fork_windows.cc \
     src/core/lib/iomgr/gethostname_fallback.cc \
     src/core/lib/iomgr/gethostname_host_name_max.cc \
     src/core/lib/iomgr/gethostname_sysconf.cc \
@@ -3522,6 +3530,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -3641,6 +3650,8 @@
     src/core/lib/iomgr/ev_windows.cc \
     src/core/lib/iomgr/exec_ctx.cc \
     src/core/lib/iomgr/executor.cc \
+    src/core/lib/iomgr/fork_posix.cc \
+    src/core/lib/iomgr/fork_windows.cc \
     src/core/lib/iomgr/gethostname_fallback.cc \
     src/core/lib/iomgr/gethostname_host_name_max.cc \
     src/core/lib/iomgr/gethostname_sysconf.cc \
@@ -3804,6 +3815,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -3897,6 +3909,8 @@
     src/core/lib/iomgr/ev_windows.cc \
     src/core/lib/iomgr/exec_ctx.cc \
     src/core/lib/iomgr/executor.cc \
+    src/core/lib/iomgr/fork_posix.cc \
+    src/core/lib/iomgr/fork_windows.cc \
     src/core/lib/iomgr/gethostname_fallback.cc \
     src/core/lib/iomgr/gethostname_host_name_max.cc \
     src/core/lib/iomgr/gethostname_sysconf.cc \
@@ -4060,6 +4074,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -4125,6 +4140,8 @@
     src/core/lib/iomgr/ev_windows.cc \
     src/core/lib/iomgr/exec_ctx.cc \
     src/core/lib/iomgr/executor.cc \
+    src/core/lib/iomgr/fork_posix.cc \
+    src/core/lib/iomgr/fork_windows.cc \
     src/core/lib/iomgr/gethostname_fallback.cc \
     src/core/lib/iomgr/gethostname_host_name_max.cc \
     src/core/lib/iomgr/gethostname_sysconf.cc \
@@ -4323,6 +4340,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -4334,6 +4352,7 @@
     include/grpc/byte_buffer.h \
     include/grpc/byte_buffer_reader.h \
     include/grpc/compression.h \
+    include/grpc/fork.h \
     include/grpc/grpc.h \
     include/grpc/grpc_posix.h \
     include/grpc/grpc_security_constants.h \
@@ -4580,6 +4599,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -4591,6 +4611,7 @@
     include/grpc/byte_buffer.h \
     include/grpc/byte_buffer_reader.h \
     include/grpc/compression.h \
+    include/grpc/fork.h \
     include/grpc/grpc.h \
     include/grpc/grpc_posix.h \
     include/grpc/grpc_security_constants.h \
@@ -4853,6 +4874,8 @@
     src/core/lib/iomgr/ev_windows.cc \
     src/core/lib/iomgr/exec_ctx.cc \
     src/core/lib/iomgr/executor.cc \
+    src/core/lib/iomgr/fork_posix.cc \
+    src/core/lib/iomgr/fork_windows.cc \
     src/core/lib/iomgr/gethostname_fallback.cc \
     src/core/lib/iomgr/gethostname_host_name_max.cc \
     src/core/lib/iomgr/gethostname_sysconf.cc \
@@ -5064,6 +5087,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -5075,6 +5099,7 @@
     include/grpc/byte_buffer.h \
     include/grpc/byte_buffer_reader.h \
     include/grpc/compression.h \
+    include/grpc/fork.h \
     include/grpc/grpc.h \
     include/grpc/grpc_posix.h \
     include/grpc/grpc_security_constants.h \
@@ -5489,6 +5514,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -5606,6 +5632,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -5782,6 +5809,7 @@
     include/grpc/impl/codegen/atm_gcc_atomic.h \
     include/grpc/impl/codegen/atm_gcc_sync.h \
     include/grpc/impl/codegen/atm_windows.h \
+    include/grpc/impl/codegen/fork.h \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
@@ -5793,6 +5821,7 @@
     include/grpc/byte_buffer.h \
     include/grpc/byte_buffer_reader.h \
     include/grpc/compression.h \
+    include/grpc/fork.h \
     include/grpc/grpc.h \
     include/grpc/grpc_posix.h \
     include/grpc/grpc_security_constants.h \
diff --git a/binding.gyp b/binding.gyp
new file mode 100644
index 0000000..cb0a2fb
--- /dev/null
+++ b/binding.gyp
@@ -0,0 +1,994 @@
+# GRPC Node gyp file
+# This currently builds the Node extension and dependencies
+# This file has been automatically generated from a template file.
+# Please look at the templates directory instead.
+# This file can be regenerated from the template by running
+# tools/buildgen/generate_projects.sh
+
+# Copyright 2015 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Some of this file is built with the help of
+# https://n8.io/converting-a-c-library-to-gyp/
+{
+  'variables': {
+    'runtime%': 'node',
+    # Some Node installations use the system installation of OpenSSL, and on
+    # some systems, the system OpenSSL still does not have ALPN support. This
+    # will let users recompile gRPC to work without ALPN.
+    'grpc_alpn%': 'true',
+    # Indicates that the library should be built with gcov.
+    'grpc_gcov%': 'false',
+    # Indicates that the library should be built with compatibility for musl
+    # libc, so that it can run on Alpine Linux. This is only necessary if not
+    # building on Alpine Linux
+    'grpc_alpine%': 'false'
+  },
+  'target_defaults': {
+    'configurations': {
+      'Release': {
+        'cflags': [
+            '-O2',
+        ],
+        'defines': [
+            'NDEBUG',
+        ],
+      },
+      'Debug': {
+        'cflags': [
+            '-O0',
+        ],
+        'defines': [
+            '_DEBUG',
+            'DEBUG',
+        ],
+      },
+    },
+    'cflags': [
+        '-g',
+        '-Wall',
+        '-Wextra',
+        '-Werror',
+        '-Wno-long-long',
+        '-Wno-unused-parameter',
+        '-DOSATOMIC_USE_INLINED=1',
+    ],
+    'ldflags': [
+        '-g',
+    ],
+    'cflags_c': [
+      '-Werror',
+      '-std=c99'
+    ],
+    'cflags_cc': [
+      '-Werror',
+      '-std=c++11'
+    ],
+    'include_dirs': [
+      '.',
+      'include'
+    ],
+    'defines': [
+      'GPR_BACKWARDS_COMPATIBILITY_MODE',
+      'GRPC_ARES=0',
+      'GRPC_UV'
+    ],
+    'conditions': [
+      ['grpc_gcov=="true"', {
+        'cflags': [
+            '-O0',
+            '-fprofile-arcs',
+            '-ftest-coverage',
+            '-Wno-return-type',
+        ],
+        'defines': [
+            '_DEBUG',
+            'DEBUG',
+            'GPR_GCOV',
+        ],
+        'ldflags': [
+            '-fprofile-arcs',
+            '-ftest-coverage',
+            '-rdynamic',
+        ],
+      }],
+      ['grpc_alpine=="true"', {
+        'defines': [
+          'GPR_MUSL_LIBC_COMPAT'
+        ]
+      }],
+      ['OS!="win" and runtime=="electron"', {
+        "defines": [
+          'OPENSSL_NO_THREADS'
+        ]
+      }],
+      # This is the condition for using boringssl
+      ['OS=="win" or runtime=="electron"', {
+        "include_dirs": [
+          "third_party/boringssl/include"
+        ],
+        "defines": [
+          'OPENSSL_NO_ASM'
+        ]
+      }, {
+        'conditions': [
+          ["target_arch=='ia32'", {
+             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/piii" ]
+          }],
+          ["target_arch=='x64'", {
+             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/k8" ]
+          }],
+          ["target_arch=='arm'", {
+             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/arm" ]
+          }],
+          ['grpc_alpn=="true"', {
+            'defines': [
+              'TSI_OPENSSL_ALPN_SUPPORT=1'
+            ],
+          }, {
+            'defines': [
+              'TSI_OPENSSL_ALPN_SUPPORT=0'
+            ],
+          }]
+        ],
+        'include_dirs': [
+          '<(node_root_dir)/deps/openssl/openssl/include',
+        ]
+      }],
+      ['OS == "win"', {
+        "include_dirs": [
+          "third_party/zlib",
+          "third_party/cares/cares"
+        ],
+        "defines": [
+          '_WIN32_WINNT=0x0600',
+          'WIN32_LEAN_AND_MEAN',
+          '_HAS_EXCEPTIONS=0',
+          'UNICODE',
+          '_UNICODE',
+          'NOMINMAX',
+        ],
+        "msvs_settings": {
+          'VCCLCompilerTool': {
+            'RuntimeLibrary': 1, # static debug
+          }
+        },
+        "libraries": [
+          "ws2_32"
+        ]
+      }, { # OS != "win"
+        'include_dirs': [
+          '<(node_root_dir)/deps/zlib',
+          '<(node_root_dir)/deps/cares/include'
+        ]
+      }],
+      ['OS == "mac"', {
+        'xcode_settings': {
+          'OTHER_CFLAGS': [
+              '-g',
+              '-Wall',
+              '-Wextra',
+              '-Werror',
+              '-Wno-long-long',
+              '-Wno-unused-parameter',
+              '-DOSATOMIC_USE_INLINED=1',
+          ],
+          'OTHER_CPLUSPLUSFLAGS': [
+              '-g',
+              '-Wall',
+              '-Wextra',
+              '-Werror',
+              '-Wno-long-long',
+              '-Wno-unused-parameter',
+              '-DOSATOMIC_USE_INLINED=1',
+            '-stdlib=libc++',
+            '-std=c++11',
+            '-Wno-error=deprecated-declarations'
+          ],
+        },
+      }]
+    ]
+  },
+  'conditions': [
+    ['OS=="win" or runtime=="electron"', {
+      'targets': [
+        {
+          'target_name': 'boringssl',
+          'product_prefix': 'lib',
+          'type': 'static_library',
+          'dependencies': [
+          ],
+          'sources': [
+            'src/boringssl/err_data.c',
+            'third_party/boringssl/crypto/aes/aes.c',
+            'third_party/boringssl/crypto/aes/key_wrap.c',
+            'third_party/boringssl/crypto/aes/mode_wrappers.c',
+            'third_party/boringssl/crypto/asn1/a_bitstr.c',
+            'third_party/boringssl/crypto/asn1/a_bool.c',
+            'third_party/boringssl/crypto/asn1/a_d2i_fp.c',
+            'third_party/boringssl/crypto/asn1/a_dup.c',
+            'third_party/boringssl/crypto/asn1/a_enum.c',
+            'third_party/boringssl/crypto/asn1/a_gentm.c',
+            'third_party/boringssl/crypto/asn1/a_i2d_fp.c',
+            'third_party/boringssl/crypto/asn1/a_int.c',
+            'third_party/boringssl/crypto/asn1/a_mbstr.c',
+            'third_party/boringssl/crypto/asn1/a_object.c',
+            'third_party/boringssl/crypto/asn1/a_octet.c',
+            'third_party/boringssl/crypto/asn1/a_print.c',
+            'third_party/boringssl/crypto/asn1/a_strnid.c',
+            'third_party/boringssl/crypto/asn1/a_time.c',
+            'third_party/boringssl/crypto/asn1/a_type.c',
+            'third_party/boringssl/crypto/asn1/a_utctm.c',
+            'third_party/boringssl/crypto/asn1/a_utf8.c',
+            'third_party/boringssl/crypto/asn1/asn1_lib.c',
+            'third_party/boringssl/crypto/asn1/asn1_par.c',
+            'third_party/boringssl/crypto/asn1/asn_pack.c',
+            'third_party/boringssl/crypto/asn1/f_enum.c',
+            'third_party/boringssl/crypto/asn1/f_int.c',
+            'third_party/boringssl/crypto/asn1/f_string.c',
+            'third_party/boringssl/crypto/asn1/t_bitst.c',
+            'third_party/boringssl/crypto/asn1/tasn_dec.c',
+            'third_party/boringssl/crypto/asn1/tasn_enc.c',
+            'third_party/boringssl/crypto/asn1/tasn_fre.c',
+            'third_party/boringssl/crypto/asn1/tasn_new.c',
+            'third_party/boringssl/crypto/asn1/tasn_typ.c',
+            'third_party/boringssl/crypto/asn1/tasn_utl.c',
+            'third_party/boringssl/crypto/asn1/time_support.c',
+            'third_party/boringssl/crypto/asn1/x_bignum.c',
+            'third_party/boringssl/crypto/asn1/x_long.c',
+            'third_party/boringssl/crypto/base64/base64.c',
+            'third_party/boringssl/crypto/bio/bio.c',
+            'third_party/boringssl/crypto/bio/bio_mem.c',
+            'third_party/boringssl/crypto/bio/connect.c',
+            'third_party/boringssl/crypto/bio/fd.c',
+            'third_party/boringssl/crypto/bio/file.c',
+            'third_party/boringssl/crypto/bio/hexdump.c',
+            'third_party/boringssl/crypto/bio/pair.c',
+            'third_party/boringssl/crypto/bio/printf.c',
+            'third_party/boringssl/crypto/bio/socket.c',
+            'third_party/boringssl/crypto/bio/socket_helper.c',
+            'third_party/boringssl/crypto/bn/add.c',
+            'third_party/boringssl/crypto/bn/asm/x86_64-gcc.c',
+            'third_party/boringssl/crypto/bn/bn.c',
+            'third_party/boringssl/crypto/bn/bn_asn1.c',
+            'third_party/boringssl/crypto/bn/cmp.c',
+            'third_party/boringssl/crypto/bn/convert.c',
+            'third_party/boringssl/crypto/bn/ctx.c',
+            'third_party/boringssl/crypto/bn/div.c',
+            'third_party/boringssl/crypto/bn/exponentiation.c',
+            'third_party/boringssl/crypto/bn/gcd.c',
+            'third_party/boringssl/crypto/bn/generic.c',
+            'third_party/boringssl/crypto/bn/kronecker.c',
+            'third_party/boringssl/crypto/bn/montgomery.c',
+            'third_party/boringssl/crypto/bn/montgomery_inv.c',
+            'third_party/boringssl/crypto/bn/mul.c',
+            'third_party/boringssl/crypto/bn/prime.c',
+            'third_party/boringssl/crypto/bn/random.c',
+            'third_party/boringssl/crypto/bn/rsaz_exp.c',
+            'third_party/boringssl/crypto/bn/shift.c',
+            'third_party/boringssl/crypto/bn/sqrt.c',
+            'third_party/boringssl/crypto/buf/buf.c',
+            'third_party/boringssl/crypto/bytestring/asn1_compat.c',
+            'third_party/boringssl/crypto/bytestring/ber.c',
+            'third_party/boringssl/crypto/bytestring/cbb.c',
+            'third_party/boringssl/crypto/bytestring/cbs.c',
+            'third_party/boringssl/crypto/chacha/chacha.c',
+            'third_party/boringssl/crypto/cipher/aead.c',
+            'third_party/boringssl/crypto/cipher/cipher.c',
+            'third_party/boringssl/crypto/cipher/derive_key.c',
+            'third_party/boringssl/crypto/cipher/e_aes.c',
+            'third_party/boringssl/crypto/cipher/e_chacha20poly1305.c',
+            'third_party/boringssl/crypto/cipher/e_des.c',
+            'third_party/boringssl/crypto/cipher/e_null.c',
+            'third_party/boringssl/crypto/cipher/e_rc2.c',
+            'third_party/boringssl/crypto/cipher/e_rc4.c',
+            'third_party/boringssl/crypto/cipher/e_ssl3.c',
+            'third_party/boringssl/crypto/cipher/e_tls.c',
+            'third_party/boringssl/crypto/cipher/tls_cbc.c',
+            'third_party/boringssl/crypto/cmac/cmac.c',
+            'third_party/boringssl/crypto/conf/conf.c',
+            'third_party/boringssl/crypto/cpu-aarch64-linux.c',
+            'third_party/boringssl/crypto/cpu-arm-linux.c',
+            'third_party/boringssl/crypto/cpu-arm.c',
+            'third_party/boringssl/crypto/cpu-intel.c',
+            'third_party/boringssl/crypto/cpu-ppc64le.c',
+            'third_party/boringssl/crypto/crypto.c',
+            'third_party/boringssl/crypto/curve25519/curve25519.c',
+            'third_party/boringssl/crypto/curve25519/spake25519.c',
+            'third_party/boringssl/crypto/curve25519/x25519-x86_64.c',
+            'third_party/boringssl/crypto/des/des.c',
+            'third_party/boringssl/crypto/dh/check.c',
+            'third_party/boringssl/crypto/dh/dh.c',
+            'third_party/boringssl/crypto/dh/dh_asn1.c',
+            'third_party/boringssl/crypto/dh/params.c',
+            'third_party/boringssl/crypto/digest/digest.c',
+            'third_party/boringssl/crypto/digest/digests.c',
+            'third_party/boringssl/crypto/dsa/dsa.c',
+            'third_party/boringssl/crypto/dsa/dsa_asn1.c',
+            'third_party/boringssl/crypto/ec/ec.c',
+            'third_party/boringssl/crypto/ec/ec_asn1.c',
+            'third_party/boringssl/crypto/ec/ec_key.c',
+            'third_party/boringssl/crypto/ec/ec_montgomery.c',
+            'third_party/boringssl/crypto/ec/oct.c',
+            'third_party/boringssl/crypto/ec/p224-64.c',
+            'third_party/boringssl/crypto/ec/p256-64.c',
+            'third_party/boringssl/crypto/ec/p256-x86_64.c',
+            'third_party/boringssl/crypto/ec/simple.c',
+            'third_party/boringssl/crypto/ec/util-64.c',
+            'third_party/boringssl/crypto/ec/wnaf.c',
+            'third_party/boringssl/crypto/ecdh/ecdh.c',
+            'third_party/boringssl/crypto/ecdsa/ecdsa.c',
+            'third_party/boringssl/crypto/ecdsa/ecdsa_asn1.c',
+            'third_party/boringssl/crypto/engine/engine.c',
+            'third_party/boringssl/crypto/err/err.c',
+            'third_party/boringssl/crypto/evp/digestsign.c',
+            'third_party/boringssl/crypto/evp/evp.c',
+            'third_party/boringssl/crypto/evp/evp_asn1.c',
+            'third_party/boringssl/crypto/evp/evp_ctx.c',
+            'third_party/boringssl/crypto/evp/p_dsa_asn1.c',
+            'third_party/boringssl/crypto/evp/p_ec.c',
+            'third_party/boringssl/crypto/evp/p_ec_asn1.c',
+            'third_party/boringssl/crypto/evp/p_rsa.c',
+            'third_party/boringssl/crypto/evp/p_rsa_asn1.c',
+            'third_party/boringssl/crypto/evp/pbkdf.c',
+            'third_party/boringssl/crypto/evp/print.c',
+            'third_party/boringssl/crypto/evp/sign.c',
+            'third_party/boringssl/crypto/ex_data.c',
+            'third_party/boringssl/crypto/hkdf/hkdf.c',
+            'third_party/boringssl/crypto/hmac/hmac.c',
+            'third_party/boringssl/crypto/lhash/lhash.c',
+            'third_party/boringssl/crypto/md4/md4.c',
+            'third_party/boringssl/crypto/md5/md5.c',
+            'third_party/boringssl/crypto/mem.c',
+            'third_party/boringssl/crypto/modes/cbc.c',
+            'third_party/boringssl/crypto/modes/cfb.c',
+            'third_party/boringssl/crypto/modes/ctr.c',
+            'third_party/boringssl/crypto/modes/gcm.c',
+            'third_party/boringssl/crypto/modes/ofb.c',
+            'third_party/boringssl/crypto/modes/polyval.c',
+            'third_party/boringssl/crypto/obj/obj.c',
+            'third_party/boringssl/crypto/obj/obj_xref.c',
+            'third_party/boringssl/crypto/pem/pem_all.c',
+            'third_party/boringssl/crypto/pem/pem_info.c',
+            'third_party/boringssl/crypto/pem/pem_lib.c',
+            'third_party/boringssl/crypto/pem/pem_oth.c',
+            'third_party/boringssl/crypto/pem/pem_pk8.c',
+            'third_party/boringssl/crypto/pem/pem_pkey.c',
+            'third_party/boringssl/crypto/pem/pem_x509.c',
+            'third_party/boringssl/crypto/pem/pem_xaux.c',
+            'third_party/boringssl/crypto/pkcs8/p5_pbev2.c',
+            'third_party/boringssl/crypto/pkcs8/p8_pkey.c',
+            'third_party/boringssl/crypto/pkcs8/pkcs8.c',
+            'third_party/boringssl/crypto/poly1305/poly1305.c',
+            'third_party/boringssl/crypto/poly1305/poly1305_arm.c',
+            'third_party/boringssl/crypto/poly1305/poly1305_vec.c',
+            'third_party/boringssl/crypto/pool/pool.c',
+            'third_party/boringssl/crypto/rand/deterministic.c',
+            'third_party/boringssl/crypto/rand/fuchsia.c',
+            'third_party/boringssl/crypto/rand/rand.c',
+            'third_party/boringssl/crypto/rand/urandom.c',
+            'third_party/boringssl/crypto/rand/windows.c',
+            'third_party/boringssl/crypto/rc4/rc4.c',
+            'third_party/boringssl/crypto/refcount_c11.c',
+            'third_party/boringssl/crypto/refcount_lock.c',
+            'third_party/boringssl/crypto/rsa/blinding.c',
+            'third_party/boringssl/crypto/rsa/padding.c',
+            'third_party/boringssl/crypto/rsa/rsa.c',
+            'third_party/boringssl/crypto/rsa/rsa_asn1.c',
+            'third_party/boringssl/crypto/rsa/rsa_impl.c',
+            'third_party/boringssl/crypto/sha/sha1-altivec.c',
+            'third_party/boringssl/crypto/sha/sha1.c',
+            'third_party/boringssl/crypto/sha/sha256.c',
+            'third_party/boringssl/crypto/sha/sha512.c',
+            'third_party/boringssl/crypto/stack/stack.c',
+            'third_party/boringssl/crypto/thread.c',
+            'third_party/boringssl/crypto/thread_none.c',
+            'third_party/boringssl/crypto/thread_pthread.c',
+            'third_party/boringssl/crypto/thread_win.c',
+            'third_party/boringssl/crypto/x509/a_digest.c',
+            'third_party/boringssl/crypto/x509/a_sign.c',
+            'third_party/boringssl/crypto/x509/a_strex.c',
+            'third_party/boringssl/crypto/x509/a_verify.c',
+            'third_party/boringssl/crypto/x509/algorithm.c',
+            'third_party/boringssl/crypto/x509/asn1_gen.c',
+            'third_party/boringssl/crypto/x509/by_dir.c',
+            'third_party/boringssl/crypto/x509/by_file.c',
+            'third_party/boringssl/crypto/x509/i2d_pr.c',
+            'third_party/boringssl/crypto/x509/pkcs7.c',
+            'third_party/boringssl/crypto/x509/rsa_pss.c',
+            'third_party/boringssl/crypto/x509/t_crl.c',
+            'third_party/boringssl/crypto/x509/t_req.c',
+            'third_party/boringssl/crypto/x509/t_x509.c',
+            'third_party/boringssl/crypto/x509/t_x509a.c',
+            'third_party/boringssl/crypto/x509/x509.c',
+            'third_party/boringssl/crypto/x509/x509_att.c',
+            'third_party/boringssl/crypto/x509/x509_cmp.c',
+            'third_party/boringssl/crypto/x509/x509_d2.c',
+            'third_party/boringssl/crypto/x509/x509_def.c',
+            'third_party/boringssl/crypto/x509/x509_ext.c',
+            'third_party/boringssl/crypto/x509/x509_lu.c',
+            'third_party/boringssl/crypto/x509/x509_obj.c',
+            'third_party/boringssl/crypto/x509/x509_r2x.c',
+            'third_party/boringssl/crypto/x509/x509_req.c',
+            'third_party/boringssl/crypto/x509/x509_set.c',
+            'third_party/boringssl/crypto/x509/x509_trs.c',
+            'third_party/boringssl/crypto/x509/x509_txt.c',
+            'third_party/boringssl/crypto/x509/x509_v3.c',
+            'third_party/boringssl/crypto/x509/x509_vfy.c',
+            'third_party/boringssl/crypto/x509/x509_vpm.c',
+            'third_party/boringssl/crypto/x509/x509cset.c',
+            'third_party/boringssl/crypto/x509/x509name.c',
+            'third_party/boringssl/crypto/x509/x509rset.c',
+            'third_party/boringssl/crypto/x509/x509spki.c',
+            'third_party/boringssl/crypto/x509/x509type.c',
+            'third_party/boringssl/crypto/x509/x_algor.c',
+            'third_party/boringssl/crypto/x509/x_all.c',
+            'third_party/boringssl/crypto/x509/x_attrib.c',
+            'third_party/boringssl/crypto/x509/x_crl.c',
+            'third_party/boringssl/crypto/x509/x_exten.c',
+            'third_party/boringssl/crypto/x509/x_info.c',
+            'third_party/boringssl/crypto/x509/x_name.c',
+            'third_party/boringssl/crypto/x509/x_pkey.c',
+            'third_party/boringssl/crypto/x509/x_pubkey.c',
+            'third_party/boringssl/crypto/x509/x_req.c',
+            'third_party/boringssl/crypto/x509/x_sig.c',
+            'third_party/boringssl/crypto/x509/x_spki.c',
+            'third_party/boringssl/crypto/x509/x_val.c',
+            'third_party/boringssl/crypto/x509/x_x509.c',
+            'third_party/boringssl/crypto/x509/x_x509a.c',
+            'third_party/boringssl/crypto/x509v3/pcy_cache.c',
+            'third_party/boringssl/crypto/x509v3/pcy_data.c',
+            'third_party/boringssl/crypto/x509v3/pcy_lib.c',
+            'third_party/boringssl/crypto/x509v3/pcy_map.c',
+            'third_party/boringssl/crypto/x509v3/pcy_node.c',
+            'third_party/boringssl/crypto/x509v3/pcy_tree.c',
+            'third_party/boringssl/crypto/x509v3/v3_akey.c',
+            'third_party/boringssl/crypto/x509v3/v3_akeya.c',
+            'third_party/boringssl/crypto/x509v3/v3_alt.c',
+            'third_party/boringssl/crypto/x509v3/v3_bcons.c',
+            'third_party/boringssl/crypto/x509v3/v3_bitst.c',
+            'third_party/boringssl/crypto/x509v3/v3_conf.c',
+            'third_party/boringssl/crypto/x509v3/v3_cpols.c',
+            'third_party/boringssl/crypto/x509v3/v3_crld.c',
+            'third_party/boringssl/crypto/x509v3/v3_enum.c',
+            'third_party/boringssl/crypto/x509v3/v3_extku.c',
+            'third_party/boringssl/crypto/x509v3/v3_genn.c',
+            'third_party/boringssl/crypto/x509v3/v3_ia5.c',
+            'third_party/boringssl/crypto/x509v3/v3_info.c',
+            'third_party/boringssl/crypto/x509v3/v3_int.c',
+            'third_party/boringssl/crypto/x509v3/v3_lib.c',
+            'third_party/boringssl/crypto/x509v3/v3_ncons.c',
+            'third_party/boringssl/crypto/x509v3/v3_pci.c',
+            'third_party/boringssl/crypto/x509v3/v3_pcia.c',
+            'third_party/boringssl/crypto/x509v3/v3_pcons.c',
+            'third_party/boringssl/crypto/x509v3/v3_pku.c',
+            'third_party/boringssl/crypto/x509v3/v3_pmaps.c',
+            'third_party/boringssl/crypto/x509v3/v3_prn.c',
+            'third_party/boringssl/crypto/x509v3/v3_purp.c',
+            'third_party/boringssl/crypto/x509v3/v3_skey.c',
+            'third_party/boringssl/crypto/x509v3/v3_sxnet.c',
+            'third_party/boringssl/crypto/x509v3/v3_utl.c',
+            'third_party/boringssl/ssl/bio_ssl.c',
+            'third_party/boringssl/ssl/custom_extensions.c',
+            'third_party/boringssl/ssl/d1_both.c',
+            'third_party/boringssl/ssl/d1_lib.c',
+            'third_party/boringssl/ssl/d1_pkt.c',
+            'third_party/boringssl/ssl/d1_srtp.c',
+            'third_party/boringssl/ssl/dtls_method.c',
+            'third_party/boringssl/ssl/dtls_record.c',
+            'third_party/boringssl/ssl/handshake_client.c',
+            'third_party/boringssl/ssl/handshake_server.c',
+            'third_party/boringssl/ssl/s3_both.c',
+            'third_party/boringssl/ssl/s3_lib.c',
+            'third_party/boringssl/ssl/s3_pkt.c',
+            'third_party/boringssl/ssl/ssl_aead_ctx.c',
+            'third_party/boringssl/ssl/ssl_asn1.c',
+            'third_party/boringssl/ssl/ssl_buffer.c',
+            'third_party/boringssl/ssl/ssl_cert.c',
+            'third_party/boringssl/ssl/ssl_cipher.c',
+            'third_party/boringssl/ssl/ssl_ecdh.c',
+            'third_party/boringssl/ssl/ssl_file.c',
+            'third_party/boringssl/ssl/ssl_lib.c',
+            'third_party/boringssl/ssl/ssl_privkey.c',
+            'third_party/boringssl/ssl/ssl_privkey_cc.cc',
+            'third_party/boringssl/ssl/ssl_session.c',
+            'third_party/boringssl/ssl/ssl_stat.c',
+            'third_party/boringssl/ssl/ssl_transcript.c',
+            'third_party/boringssl/ssl/ssl_x509.c',
+            'third_party/boringssl/ssl/t1_enc.c',
+            'third_party/boringssl/ssl/t1_lib.c',
+            'third_party/boringssl/ssl/tls13_both.c',
+            'third_party/boringssl/ssl/tls13_client.c',
+            'third_party/boringssl/ssl/tls13_enc.c',
+            'third_party/boringssl/ssl/tls13_server.c',
+            'third_party/boringssl/ssl/tls_method.c',
+            'third_party/boringssl/ssl/tls_record.c',
+          ],
+          'conditions': [
+            ['OS == "mac"', {
+              'xcode_settings': {
+                'MACOSX_DEPLOYMENT_TARGET': '10.9'
+              }
+            }]
+          ]
+        },
+      ],
+    }],
+    ['OS == "win" and runtime!="electron"', {
+      'targets': [
+        {
+          # IMPORTANT WINDOWS BUILD INFORMATION
+          # This library does not build on Windows without modifying the Node
+          # development packages that node-gyp downloads in order to build.
+          # Due to https://github.com/nodejs/node/issues/4932, the headers for
+          # BoringSSL conflict with the OpenSSL headers included by default
+          # when including the Node headers. The remedy for this is to remove
+          # the OpenSSL headers, from the downloaded Node development package,
+          # which is typically located in `.node-gyp` in your home directory.
+          #
+          # This is not true of Electron, which does not have OpenSSL headers.
+          'target_name': 'WINDOWS_BUILD_WARNING',
+          'rules': [
+            {
+              'rule_name': 'WINDOWS_BUILD_WARNING',
+              'extension': 'S',
+              'inputs': [
+                'package.json'
+              ],
+              'outputs': [
+                'ignore_this_part'
+              ],
+              'action': ['echo', 'IMPORTANT: Due to https://github.com/nodejs/node/issues/4932, to build this library on Windows, you must first remove <(node_root_dir)/include/node/openssl/']
+            }
+          ]
+        },
+      ]
+    }],
+    ['OS == "win"', {
+      'targets': [
+        # Only want to compile zlib under Windows
+        {
+          'target_name': 'z',
+          'product_prefix': 'lib',
+          'type': 'static_library',
+          'dependencies': [
+          ],
+          'sources': [
+            'third_party/zlib/adler32.c',
+            'third_party/zlib/compress.c',
+            'third_party/zlib/crc32.c',
+            'third_party/zlib/deflate.c',
+            'third_party/zlib/gzclose.c',
+            'third_party/zlib/gzlib.c',
+            'third_party/zlib/gzread.c',
+            'third_party/zlib/gzwrite.c',
+            'third_party/zlib/infback.c',
+            'third_party/zlib/inffast.c',
+            'third_party/zlib/inflate.c',
+            'third_party/zlib/inftrees.c',
+            'third_party/zlib/trees.c',
+            'third_party/zlib/uncompr.c',
+            'third_party/zlib/zutil.c',
+          ]
+        },
+      ]
+    }]
+  ],
+  'targets': [
+    {
+      'target_name': 'gpr',
+      'product_prefix': 'lib',
+      'type': 'static_library',
+      'dependencies': [
+      ],
+      'sources': [
+        'src/core/lib/profiling/basic_timers.c',
+        'src/core/lib/profiling/stap_timers.c',
+        'src/core/lib/support/alloc.c',
+        'src/core/lib/support/arena.c',
+        'src/core/lib/support/atm.c',
+        'src/core/lib/support/avl.c',
+        'src/core/lib/support/backoff.c',
+        'src/core/lib/support/cmdline.c',
+        'src/core/lib/support/cpu_iphone.c',
+        'src/core/lib/support/cpu_linux.c',
+        'src/core/lib/support/cpu_posix.c',
+        'src/core/lib/support/cpu_windows.c',
+        'src/core/lib/support/env_linux.c',
+        'src/core/lib/support/env_posix.c',
+        'src/core/lib/support/env_windows.c',
+        'src/core/lib/support/fork.c',
+        'src/core/lib/support/histogram.c',
+        'src/core/lib/support/host_port.c',
+        'src/core/lib/support/log.c',
+        'src/core/lib/support/log_android.c',
+        'src/core/lib/support/log_linux.c',
+        'src/core/lib/support/log_posix.c',
+        'src/core/lib/support/log_windows.c',
+        'src/core/lib/support/mpscq.c',
+        'src/core/lib/support/murmur_hash.c',
+        'src/core/lib/support/stack_lockfree.c',
+        'src/core/lib/support/string.c',
+        'src/core/lib/support/string_posix.c',
+        'src/core/lib/support/string_util_windows.c',
+        'src/core/lib/support/string_windows.c',
+        'src/core/lib/support/subprocess_posix.c',
+        'src/core/lib/support/subprocess_windows.c',
+        'src/core/lib/support/sync.c',
+        'src/core/lib/support/sync_posix.c',
+        'src/core/lib/support/sync_windows.c',
+        'src/core/lib/support/thd.c',
+        'src/core/lib/support/thd_posix.c',
+        'src/core/lib/support/thd_windows.c',
+        'src/core/lib/support/time.c',
+        'src/core/lib/support/time_posix.c',
+        'src/core/lib/support/time_precise.c',
+        'src/core/lib/support/time_windows.c',
+        'src/core/lib/support/tls_pthread.c',
+        'src/core/lib/support/tmpfile_msys.c',
+        'src/core/lib/support/tmpfile_posix.c',
+        'src/core/lib/support/tmpfile_windows.c',
+        'src/core/lib/support/wrap_memcpy.c',
+      ],
+      'conditions': [
+        ['OS == "mac"', {
+          'xcode_settings': {
+            'MACOSX_DEPLOYMENT_TARGET': '10.9'
+          }
+        }]
+      ]
+    },
+    {
+      'target_name': 'grpc',
+      'product_prefix': 'lib',
+      'type': 'static_library',
+      'dependencies': [
+        'gpr',
+      ],
+      'sources': [
+        'src/core/lib/surface/init.c',
+        'src/core/lib/channel/channel_args.c',
+        'src/core/lib/channel/channel_stack.c',
+        'src/core/lib/channel/channel_stack_builder.c',
+        'src/core/lib/channel/connected_channel.c',
+        'src/core/lib/channel/handshaker.c',
+        'src/core/lib/channel/handshaker_factory.c',
+        'src/core/lib/channel/handshaker_registry.c',
+        'src/core/lib/compression/compression.c',
+        'src/core/lib/compression/message_compress.c',
+        'src/core/lib/compression/stream_compression.c',
+        'src/core/lib/compression/stream_compression_gzip.c',
+        'src/core/lib/compression/stream_compression_identity.c',
+        'src/core/lib/debug/stats.c',
+        'src/core/lib/debug/stats_data.c',
+        'src/core/lib/http/format_request.c',
+        'src/core/lib/http/httpcli.c',
+        'src/core/lib/http/parser.c',
+        'src/core/lib/iomgr/call_combiner.c',
+        'src/core/lib/iomgr/closure.c',
+        'src/core/lib/iomgr/combiner.c',
+        'src/core/lib/iomgr/endpoint.c',
+        'src/core/lib/iomgr/endpoint_pair_posix.c',
+        'src/core/lib/iomgr/endpoint_pair_uv.c',
+        'src/core/lib/iomgr/endpoint_pair_windows.c',
+        'src/core/lib/iomgr/error.c',
+        'src/core/lib/iomgr/ev_epoll1_linux.c',
+        'src/core/lib/iomgr/ev_epollex_linux.c',
+        'src/core/lib/iomgr/ev_epollsig_linux.c',
+        'src/core/lib/iomgr/ev_poll_posix.c',
+        'src/core/lib/iomgr/ev_posix.c',
+        'src/core/lib/iomgr/ev_windows.c',
+        'src/core/lib/iomgr/exec_ctx.c',
+        'src/core/lib/iomgr/executor.c',
+        'src/core/lib/iomgr/fork_posix.c',
+        'src/core/lib/iomgr/fork_windows.c',
+        'src/core/lib/iomgr/gethostname_fallback.c',
+        'src/core/lib/iomgr/gethostname_host_name_max.c',
+        'src/core/lib/iomgr/gethostname_sysconf.c',
+        'src/core/lib/iomgr/iocp_windows.c',
+        'src/core/lib/iomgr/iomgr.c',
+        'src/core/lib/iomgr/iomgr_posix.c',
+        'src/core/lib/iomgr/iomgr_uv.c',
+        'src/core/lib/iomgr/iomgr_windows.c',
+        'src/core/lib/iomgr/is_epollexclusive_available.c',
+        'src/core/lib/iomgr/load_file.c',
+        'src/core/lib/iomgr/lockfree_event.c',
+        'src/core/lib/iomgr/network_status_tracker.c',
+        'src/core/lib/iomgr/polling_entity.c',
+        'src/core/lib/iomgr/pollset_set_uv.c',
+        'src/core/lib/iomgr/pollset_set_windows.c',
+        'src/core/lib/iomgr/pollset_uv.c',
+        'src/core/lib/iomgr/pollset_windows.c',
+        'src/core/lib/iomgr/resolve_address_posix.c',
+        'src/core/lib/iomgr/resolve_address_uv.c',
+        'src/core/lib/iomgr/resolve_address_windows.c',
+        'src/core/lib/iomgr/resource_quota.c',
+        'src/core/lib/iomgr/sockaddr_utils.c',
+        'src/core/lib/iomgr/socket_factory_posix.c',
+        'src/core/lib/iomgr/socket_mutator.c',
+        'src/core/lib/iomgr/socket_utils_common_posix.c',
+        'src/core/lib/iomgr/socket_utils_linux.c',
+        'src/core/lib/iomgr/socket_utils_posix.c',
+        'src/core/lib/iomgr/socket_utils_uv.c',
+        'src/core/lib/iomgr/socket_utils_windows.c',
+        'src/core/lib/iomgr/socket_windows.c',
+        'src/core/lib/iomgr/tcp_client_posix.c',
+        'src/core/lib/iomgr/tcp_client_uv.c',
+        'src/core/lib/iomgr/tcp_client_windows.c',
+        'src/core/lib/iomgr/tcp_posix.c',
+        'src/core/lib/iomgr/tcp_server_posix.c',
+        'src/core/lib/iomgr/tcp_server_utils_posix_common.c',
+        'src/core/lib/iomgr/tcp_server_utils_posix_ifaddrs.c',
+        'src/core/lib/iomgr/tcp_server_utils_posix_noifaddrs.c',
+        'src/core/lib/iomgr/tcp_server_uv.c',
+        'src/core/lib/iomgr/tcp_server_windows.c',
+        'src/core/lib/iomgr/tcp_uv.c',
+        'src/core/lib/iomgr/tcp_windows.c',
+        'src/core/lib/iomgr/time_averaged_stats.c',
+        'src/core/lib/iomgr/timer_generic.c',
+        'src/core/lib/iomgr/timer_heap.c',
+        'src/core/lib/iomgr/timer_manager.c',
+        'src/core/lib/iomgr/timer_uv.c',
+        'src/core/lib/iomgr/udp_server.c',
+        'src/core/lib/iomgr/unix_sockets_posix.c',
+        'src/core/lib/iomgr/unix_sockets_posix_noop.c',
+        'src/core/lib/iomgr/wakeup_fd_cv.c',
+        'src/core/lib/iomgr/wakeup_fd_eventfd.c',
+        'src/core/lib/iomgr/wakeup_fd_nospecial.c',
+        'src/core/lib/iomgr/wakeup_fd_pipe.c',
+        'src/core/lib/iomgr/wakeup_fd_posix.c',
+        'src/core/lib/json/json.c',
+        'src/core/lib/json/json_reader.c',
+        'src/core/lib/json/json_string.c',
+        'src/core/lib/json/json_writer.c',
+        'src/core/lib/slice/b64.c',
+        'src/core/lib/slice/percent_encoding.c',
+        'src/core/lib/slice/slice.c',
+        'src/core/lib/slice/slice_buffer.c',
+        'src/core/lib/slice/slice_hash_table.c',
+        'src/core/lib/slice/slice_intern.c',
+        'src/core/lib/slice/slice_string_helpers.c',
+        'src/core/lib/surface/alarm.c',
+        'src/core/lib/surface/api_trace.c',
+        'src/core/lib/surface/byte_buffer.c',
+        'src/core/lib/surface/byte_buffer_reader.c',
+        'src/core/lib/surface/call.c',
+        'src/core/lib/surface/call_details.c',
+        'src/core/lib/surface/call_log_batch.c',
+        'src/core/lib/surface/channel.c',
+        'src/core/lib/surface/channel_init.c',
+        'src/core/lib/surface/channel_ping.c',
+        'src/core/lib/surface/channel_stack_type.c',
+        'src/core/lib/surface/completion_queue.c',
+        'src/core/lib/surface/completion_queue_factory.c',
+        'src/core/lib/surface/event_string.c',
+        'src/core/lib/surface/lame_client.cc',
+        'src/core/lib/surface/metadata_array.c',
+        'src/core/lib/surface/server.c',
+        'src/core/lib/surface/validate_metadata.c',
+        'src/core/lib/surface/version.c',
+        'src/core/lib/transport/bdp_estimator.c',
+        'src/core/lib/transport/byte_stream.c',
+        'src/core/lib/transport/connectivity_state.c',
+        'src/core/lib/transport/error_utils.c',
+        'src/core/lib/transport/metadata.c',
+        'src/core/lib/transport/metadata_batch.c',
+        'src/core/lib/transport/pid_controller.c',
+        'src/core/lib/transport/service_config.c',
+        'src/core/lib/transport/static_metadata.c',
+        'src/core/lib/transport/status_conversion.c',
+        'src/core/lib/transport/timeout_encoding.c',
+        'src/core/lib/transport/transport.c',
+        'src/core/lib/transport/transport_op_string.c',
+        'src/core/lib/debug/trace.c',
+        'src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c',
+        'src/core/ext/transport/chttp2/transport/bin_decoder.c',
+        'src/core/ext/transport/chttp2/transport/bin_encoder.c',
+        'src/core/ext/transport/chttp2/transport/chttp2_plugin.c',
+        'src/core/ext/transport/chttp2/transport/chttp2_transport.c',
+        'src/core/ext/transport/chttp2/transport/flow_control.c',
+        'src/core/ext/transport/chttp2/transport/frame_data.c',
+        'src/core/ext/transport/chttp2/transport/frame_goaway.c',
+        'src/core/ext/transport/chttp2/transport/frame_ping.c',
+        'src/core/ext/transport/chttp2/transport/frame_rst_stream.c',
+        'src/core/ext/transport/chttp2/transport/frame_settings.c',
+        'src/core/ext/transport/chttp2/transport/frame_window_update.c',
+        'src/core/ext/transport/chttp2/transport/hpack_encoder.c',
+        'src/core/ext/transport/chttp2/transport/hpack_parser.c',
+        'src/core/ext/transport/chttp2/transport/hpack_table.c',
+        'src/core/ext/transport/chttp2/transport/http2_settings.c',
+        'src/core/ext/transport/chttp2/transport/huffsyms.c',
+        'src/core/ext/transport/chttp2/transport/incoming_metadata.c',
+        'src/core/ext/transport/chttp2/transport/parsing.c',
+        'src/core/ext/transport/chttp2/transport/stream_lists.c',
+        'src/core/ext/transport/chttp2/transport/stream_map.c',
+        'src/core/ext/transport/chttp2/transport/varint.c',
+        'src/core/ext/transport/chttp2/transport/writing.c',
+        'src/core/ext/transport/chttp2/alpn/alpn.c',
+        'src/core/ext/filters/http/client/http_client_filter.c',
+        'src/core/ext/filters/http/http_filters_plugin.c',
+        'src/core/ext/filters/http/message_compress/message_compress_filter.c',
+        'src/core/ext/filters/http/server/http_server_filter.c',
+        'src/core/lib/http/httpcli_security_connector.c',
+        'src/core/lib/security/context/security_context.c',
+        'src/core/lib/security/credentials/composite/composite_credentials.c',
+        'src/core/lib/security/credentials/credentials.c',
+        'src/core/lib/security/credentials/credentials_metadata.c',
+        'src/core/lib/security/credentials/fake/fake_credentials.c',
+        'src/core/lib/security/credentials/google_default/credentials_generic.c',
+        'src/core/lib/security/credentials/google_default/google_default_credentials.c',
+        'src/core/lib/security/credentials/iam/iam_credentials.c',
+        'src/core/lib/security/credentials/jwt/json_token.c',
+        'src/core/lib/security/credentials/jwt/jwt_credentials.c',
+        'src/core/lib/security/credentials/jwt/jwt_verifier.c',
+        'src/core/lib/security/credentials/oauth2/oauth2_credentials.c',
+        'src/core/lib/security/credentials/plugin/plugin_credentials.c',
+        'src/core/lib/security/credentials/ssl/ssl_credentials.c',
+        'src/core/lib/security/transport/client_auth_filter.c',
+        'src/core/lib/security/transport/lb_targets_info.c',
+        'src/core/lib/security/transport/secure_endpoint.c',
+        'src/core/lib/security/transport/security_connector.c',
+        'src/core/lib/security/transport/security_handshaker.c',
+        'src/core/lib/security/transport/server_auth_filter.c',
+        'src/core/lib/security/transport/tsi_error.c',
+        'src/core/lib/security/util/json_util.c',
+        'src/core/lib/surface/init_secure.c',
+        'src/core/tsi/fake_transport_security.c',
+        'src/core/tsi/gts_transport_security.c',
+        'src/core/tsi/ssl_transport_security.c',
+        'src/core/tsi/transport_security_grpc.c',
+        'src/core/tsi/transport_security.c',
+        'src/core/tsi/transport_security_adapter.c',
+        'src/core/ext/transport/chttp2/server/chttp2_server.c',
+        'src/core/ext/transport/chttp2/client/secure/secure_channel_create.c',
+        'src/core/ext/filters/client_channel/channel_connectivity.c',
+        'src/core/ext/filters/client_channel/client_channel.c',
+        'src/core/ext/filters/client_channel/client_channel_factory.c',
+        'src/core/ext/filters/client_channel/client_channel_plugin.c',
+        'src/core/ext/filters/client_channel/connector.c',
+        'src/core/ext/filters/client_channel/http_connect_handshaker.c',
+        'src/core/ext/filters/client_channel/http_proxy.c',
+        'src/core/ext/filters/client_channel/lb_policy.c',
+        'src/core/ext/filters/client_channel/lb_policy_factory.c',
+        'src/core/ext/filters/client_channel/lb_policy_registry.c',
+        'src/core/ext/filters/client_channel/parse_address.c',
+        'src/core/ext/filters/client_channel/proxy_mapper.c',
+        'src/core/ext/filters/client_channel/proxy_mapper_registry.c',
+        'src/core/ext/filters/client_channel/resolver.c',
+        'src/core/ext/filters/client_channel/resolver_factory.c',
+        'src/core/ext/filters/client_channel/resolver_registry.c',
+        'src/core/ext/filters/client_channel/retry_throttle.c',
+        'src/core/ext/filters/client_channel/subchannel.c',
+        'src/core/ext/filters/client_channel/subchannel_index.c',
+        'src/core/ext/filters/client_channel/uri_parser.c',
+        'src/core/ext/filters/deadline/deadline_filter.c',
+        'src/core/ext/transport/chttp2/client/chttp2_connector.c',
+        'src/core/ext/transport/chttp2/server/insecure/server_chttp2.c',
+        'src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c',
+        'src/core/ext/transport/chttp2/client/insecure/channel_create.c',
+        'src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c',
+        'src/core/ext/transport/inproc/inproc_plugin.c',
+        'src/core/ext/transport/inproc/inproc_transport.c',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.c',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.c',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.c',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.c',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c',
+        'third_party/nanopb/pb_common.c',
+        'third_party/nanopb/pb_decode.c',
+        'third_party/nanopb/pb_encode.c',
+        'src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c',
+        'src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.c',
+        'src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.c',
+        'src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c',
+        'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c',
+        'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c',
+        'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c',
+        'src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c',
+        'src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c',
+        'src/core/ext/filters/load_reporting/server_load_reporting_filter.c',
+        'src/core/ext/filters/load_reporting/server_load_reporting_plugin.c',
+        'src/core/ext/census/base_resources.c',
+        'src/core/ext/census/context.c',
+        'src/core/ext/census/gen/census.pb.c',
+        'src/core/ext/census/gen/trace_context.pb.c',
+        'src/core/ext/census/grpc_context.c',
+        'src/core/ext/census/grpc_filter.c',
+        'src/core/ext/census/grpc_plugin.c',
+        'src/core/ext/census/initialize.c',
+        'src/core/ext/census/intrusive_hash_map.c',
+        'src/core/ext/census/mlog.c',
+        'src/core/ext/census/operation.c',
+        'src/core/ext/census/placeholders.c',
+        'src/core/ext/census/resource.c',
+        'src/core/ext/census/trace_context.c',
+        'src/core/ext/census/tracing.c',
+        'src/core/ext/filters/max_age/max_age_filter.c',
+        'src/core/ext/filters/message_size/message_size_filter.c',
+        'src/core/ext/filters/workarounds/workaround_cronet_compression_filter.c',
+        'src/core/ext/filters/workarounds/workaround_utils.c',
+        'src/core/plugin_registry/grpc_plugin_registry.c',
+      ],
+      'conditions': [
+        ['OS == "mac"', {
+          'xcode_settings': {
+            'MACOSX_DEPLOYMENT_TARGET': '10.9'
+          }
+        }]
+      ]
+    },
+    {
+      'include_dirs': [
+        "<!(node -e \"require('nan')\")"
+      ],
+      'cflags': [
+        '-pthread',
+        '-zdefs',
+        '-Wno-error=deprecated-declarations'
+      ],
+      "conditions": [
+        ['OS=="win" or runtime=="electron"', {
+          'dependencies': [
+            "boringssl",
+          ]
+        }],
+        ['OS=="win"', {
+          'dependencies': [
+            "z",
+          ]
+        }],
+        ['OS=="linux"', {
+          'ldflags': [
+            '-Wl,-wrap,memcpy'
+          ]
+        }],
+        ['OS == "mac"', {
+          'xcode_settings': {
+            'MACOSX_DEPLOYMENT_TARGET': '10.9'
+          }
+        }]
+      ],
+      "target_name": "grpc_node",
+      "sources": [
+        "src/node/ext/byte_buffer.cc",
+        "src/node/ext/call.cc",
+        "src/node/ext/call_credentials.cc",
+        "src/node/ext/channel.cc",
+        "src/node/ext/channel_credentials.cc",
+        "src/node/ext/completion_queue.cc",
+        "src/node/ext/node_grpc.cc",
+        "src/node/ext/server.cc",
+        "src/node/ext/server_credentials.cc",
+        "src/node/ext/slice.cc",
+        "src/node/ext/timeval.cc",
+      ],
+      "dependencies": [
+        "grpc",
+        "gpr",
+      ]
+    },
+    {
+      "target_name": "action_after_build",
+      "type": "none",
+      "dependencies": [ "<(module_name)" ],
+      "copies": [
+        {
+          "files": [ "<(PRODUCT_DIR)/<(module_name).node"],
+          "destination": "<(module_path)"
+        }
+      ]
+    }
+  ]
+}
diff --git a/build.yaml b/build.yaml
index 9018e51..12a5d6b 100644
--- a/build.yaml
+++ b/build.yaml
@@ -12,9 +12,9 @@
   '#08': Use "-preN" suffixes to identify pre-release versions
   '#09': Per-language overrides are possible with (eg) ruby_version tag here
   '#10': See the expand_version.py for all the quirks here
-  core_version: 5.0.0-dev
-  g_stands_for: generous
-  version: 1.8.0-dev
+  core_version: 5.0.0
+  g_stands_for: gambit
+  version: 1.7.2
 filegroups:
 - name: census
   public_headers:
@@ -40,6 +40,7 @@
   - src/core/lib/support/env_linux.cc
   - src/core/lib/support/env_posix.cc
   - src/core/lib/support/env_windows.cc
+  - src/core/lib/support/fork.cc
   - src/core/lib/support/histogram.cc
   - src/core/lib/support/host_port.cc
   - src/core/lib/support/log.cc
@@ -109,6 +110,7 @@
   - src/core/lib/support/atomic_with_atm.h
   - src/core/lib/support/atomic_with_std.h
   - src/core/lib/support/env.h
+  - src/core/lib/support/fork.h
   - src/core/lib/support/manual_constructor.h
   - src/core/lib/support/memory.h
   - src/core/lib/support/mpscq.h
@@ -117,6 +119,7 @@
   - src/core/lib/support/stack_lockfree.h
   - src/core/lib/support/string.h
   - src/core/lib/support/string_windows.h
+  - src/core/lib/support/thd_internal.h
   - src/core/lib/support/time_precise.h
   - src/core/lib/support/tmpfile.h
   uses:
@@ -127,6 +130,7 @@
   - include/grpc/impl/codegen/atm_gcc_atomic.h
   - include/grpc/impl/codegen/atm_gcc_sync.h
   - include/grpc/impl/codegen/atm_windows.h
+  - include/grpc/impl/codegen/fork.h
   - include/grpc/impl/codegen/gpr_slice.h
   - include/grpc/impl/codegen/gpr_types.h
   - include/grpc/impl/codegen/port_platform.h
@@ -182,6 +186,8 @@
   - src/core/lib/iomgr/ev_windows.cc
   - src/core/lib/iomgr/exec_ctx.cc
   - src/core/lib/iomgr/executor.cc
+  - src/core/lib/iomgr/fork_posix.cc
+  - src/core/lib/iomgr/fork_windows.cc
   - src/core/lib/iomgr/gethostname_fallback.cc
   - src/core/lib/iomgr/gethostname_host_name_max.cc
   - src/core/lib/iomgr/gethostname_sysconf.cc
@@ -292,6 +298,7 @@
   - include/grpc/byte_buffer.h
   - include/grpc/byte_buffer_reader.h
   - include/grpc/compression.h
+  - include/grpc/fork.h
   - include/grpc/grpc.h
   - include/grpc/grpc_posix.h
   - include/grpc/grpc_security_constants.h
diff --git a/config.m4 b/config.m4
index d2f2520..ca3f4f3 100644
--- a/config.m4
+++ b/config.m4
@@ -53,6 +53,7 @@
     src/core/lib/support/env_linux.cc \
     src/core/lib/support/env_posix.cc \
     src/core/lib/support/env_windows.cc \
+    src/core/lib/support/fork.cc \
     src/core/lib/support/histogram.cc \
     src/core/lib/support/host_port.cc \
     src/core/lib/support/log.cc \
@@ -118,6 +119,8 @@
     src/core/lib/iomgr/ev_windows.cc \
     src/core/lib/iomgr/exec_ctx.cc \
     src/core/lib/iomgr/executor.cc \
+    src/core/lib/iomgr/fork_posix.cc \
+    src/core/lib/iomgr/fork_windows.cc \
     src/core/lib/iomgr/gethostname_fallback.cc \
     src/core/lib/iomgr/gethostname_host_name_max.cc \
     src/core/lib/iomgr/gethostname_sysconf.cc \
diff --git a/config.w32 b/config.w32
index 8a71375..6ad3167 100644
--- a/config.w32
+++ b/config.w32
@@ -30,6 +30,7 @@
     "src\\core\\lib\\support\\env_linux.cc " +
     "src\\core\\lib\\support\\env_posix.cc " +
     "src\\core\\lib\\support\\env_windows.cc " +
+    "src\\core\\lib\\support\\fork.cc " +
     "src\\core\\lib\\support\\histogram.cc " +
     "src\\core\\lib\\support\\host_port.cc " +
     "src\\core\\lib\\support\\log.cc " +
@@ -95,6 +96,8 @@
     "src\\core\\lib\\iomgr\\ev_windows.cc " +
     "src\\core\\lib\\iomgr\\exec_ctx.cc " +
     "src\\core\\lib\\iomgr\\executor.cc " +
+    "src\\core\\lib\\iomgr\\fork_posix.cc " +
+    "src\\core\\lib\\iomgr\\fork_windows.cc " +
     "src\\core\\lib\\iomgr\\gethostname_fallback.cc " +
     "src\\core\\lib\\iomgr\\gethostname_host_name_max.cc " +
     "src\\core\\lib\\iomgr\\gethostname_sysconf.cc " +
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 02c6a64..5f75de5 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -22,7 +22,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-Core'
-  version = '1.8.0-dev'
+  version = '1.7.2'
   s.version  = version
   s.summary  = 'Core cross-platform gRPC library, written in C'
   s.homepage = 'https://grpc.io'
@@ -85,6 +85,7 @@
     'USE_HEADERMAP' => 'NO',
     'ALWAYS_SEARCH_USER_PATHS' => 'NO',
     'GCC_PREPROCESSOR_DEFINITIONS' => '"$(inherited)" "COCOAPODS=1" "PB_NO_PACKED_STRUCTS=1"',
+    'CLANG_WARN_STRICT_PROTOTYPES' => 'NO',
   }
 
   s.default_subspecs = 'Interface', 'Implementation'
@@ -135,6 +136,7 @@
                       'include/grpc/impl/codegen/atm_gcc_atomic.h',
                       'include/grpc/impl/codegen/atm_gcc_sync.h',
                       'include/grpc/impl/codegen/atm_windows.h',
+                      'include/grpc/impl/codegen/fork.h',
                       'include/grpc/impl/codegen/gpr_slice.h',
                       'include/grpc/impl/codegen/gpr_types.h',
                       'include/grpc/impl/codegen/port_platform.h',
@@ -156,6 +158,7 @@
                       'include/grpc/impl/codegen/atm_gcc_atomic.h',
                       'include/grpc/impl/codegen/atm_gcc_sync.h',
                       'include/grpc/impl/codegen/atm_windows.h',
+                      'include/grpc/impl/codegen/fork.h',
                       'include/grpc/impl/codegen/gpr_slice.h',
                       'include/grpc/impl/codegen/gpr_types.h',
                       'include/grpc/impl/codegen/port_platform.h',
@@ -168,6 +171,7 @@
                       'include/grpc/byte_buffer.h',
                       'include/grpc/byte_buffer_reader.h',
                       'include/grpc/compression.h',
+                      'include/grpc/fork.h',
                       'include/grpc/grpc.h',
                       'include/grpc/grpc_posix.h',
                       'include/grpc/grpc_security_constants.h',
@@ -192,6 +196,7 @@
                       'src/core/lib/support/atomic_with_atm.h',
                       'src/core/lib/support/atomic_with_std.h',
                       'src/core/lib/support/env.h',
+                      'src/core/lib/support/fork.h',
                       'src/core/lib/support/manual_constructor.h',
                       'src/core/lib/support/memory.h',
                       'src/core/lib/support/mpscq.h',
@@ -200,6 +205,7 @@
                       'src/core/lib/support/stack_lockfree.h',
                       'src/core/lib/support/string.h',
                       'src/core/lib/support/string_windows.h',
+                      'src/core/lib/support/thd_internal.h',
                       'src/core/lib/support/time_precise.h',
                       'src/core/lib/support/tmpfile.h',
                       'src/core/lib/profiling/basic_timers.cc',
@@ -216,6 +222,7 @@
                       'src/core/lib/support/env_linux.cc',
                       'src/core/lib/support/env_posix.cc',
                       'src/core/lib/support/env_windows.cc',
+                      'src/core/lib/support/fork.cc',
                       'src/core/lib/support/histogram.cc',
                       'src/core/lib/support/host_port.cc',
                       'src/core/lib/support/log.cc',
@@ -492,6 +499,8 @@
                       'src/core/lib/iomgr/ev_windows.cc',
                       'src/core/lib/iomgr/exec_ctx.cc',
                       'src/core/lib/iomgr/executor.cc',
+                      'src/core/lib/iomgr/fork_posix.cc',
+                      'src/core/lib/iomgr/fork_windows.cc',
                       'src/core/lib/iomgr/gethostname_fallback.cc',
                       'src/core/lib/iomgr/gethostname_host_name_max.cc',
                       'src/core/lib/iomgr/gethostname_sysconf.cc',
@@ -711,6 +720,7 @@
                               'src/core/lib/support/atomic_with_atm.h',
                               'src/core/lib/support/atomic_with_std.h',
                               'src/core/lib/support/env.h',
+                              'src/core/lib/support/fork.h',
                               'src/core/lib/support/manual_constructor.h',
                               'src/core/lib/support/memory.h',
                               'src/core/lib/support/mpscq.h',
@@ -719,6 +729,7 @@
                               'src/core/lib/support/stack_lockfree.h',
                               'src/core/lib/support/string.h',
                               'src/core/lib/support/string_windows.h',
+                              'src/core/lib/support/thd_internal.h',
                               'src/core/lib/support/time_precise.h',
                               'src/core/lib/support/tmpfile.h',
                               'src/core/ext/transport/chttp2/transport/bin_decoder.h',
diff --git a/gRPC-ProtoRPC.podspec b/gRPC-ProtoRPC.podspec
index db1e8db..8b67fba 100644
--- a/gRPC-ProtoRPC.podspec
+++ b/gRPC-ProtoRPC.podspec
@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-ProtoRPC'
-  version = '1.8.0-dev'
+  version = '1.7.2'
   s.version  = version
   s.summary  = 'RPC library for Protocol Buffers, based on gRPC'
   s.homepage = 'https://grpc.io'
@@ -52,5 +52,6 @@
     'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1',
     # This is needed by all pods that depend on gRPC-RxLibrary:
     'CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES' => 'YES',
+    'CLANG_WARN_STRICT_PROTOTYPES' => 'NO',
   }
 end
diff --git a/gRPC-RxLibrary.podspec b/gRPC-RxLibrary.podspec
index 3689779..41310a5 100644
--- a/gRPC-RxLibrary.podspec
+++ b/gRPC-RxLibrary.podspec
@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-RxLibrary'
-  version = '1.8.0-dev'
+  version = '1.7.2'
   s.version  = version
   s.summary  = 'Reactive Extensions library for iOS/OSX.'
   s.homepage = 'https://grpc.io'
@@ -44,4 +44,8 @@
   s.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
   s.private_header_files = "#{src_dir}/private/*.h"
   s.header_mappings_dir = "#{src_dir}"
+
+  s.pod_target_xcconfig = {
+    'CLANG_WARN_STRICT_PROTOTYPES' => 'NO',
+  }
 end
diff --git a/gRPC.podspec b/gRPC.podspec
index 4c6cd35..bd40428 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -20,7 +20,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC'
-  version = '1.8.0-dev'
+  version = '1.7.2'
   s.version  = version
   s.summary  = 'gRPC client library for iOS/OSX'
   s.homepage = 'https://grpc.io'
@@ -50,6 +50,7 @@
   s.pod_target_xcconfig = {
     # This is needed by all pods that depend on gRPC-RxLibrary:
     'CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES' => 'YES',
+    'CLANG_WARN_STRICT_PROTOTYPES' => 'NO',
   }
 
   s.subspec 'Main' do |ss|
diff --git a/grpc.gemspec b/grpc.gemspec
index d674c09..8c3e993 100644
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -75,6 +75,7 @@
   s.files += %w( include/grpc/impl/codegen/atm_gcc_atomic.h )
   s.files += %w( include/grpc/impl/codegen/atm_gcc_sync.h )
   s.files += %w( include/grpc/impl/codegen/atm_windows.h )
+  s.files += %w( include/grpc/impl/codegen/fork.h )
   s.files += %w( include/grpc/impl/codegen/gpr_slice.h )
   s.files += %w( include/grpc/impl/codegen/gpr_types.h )
   s.files += %w( include/grpc/impl/codegen/port_platform.h )
@@ -89,6 +90,7 @@
   s.files += %w( src/core/lib/support/atomic_with_atm.h )
   s.files += %w( src/core/lib/support/atomic_with_std.h )
   s.files += %w( src/core/lib/support/env.h )
+  s.files += %w( src/core/lib/support/fork.h )
   s.files += %w( src/core/lib/support/manual_constructor.h )
   s.files += %w( src/core/lib/support/memory.h )
   s.files += %w( src/core/lib/support/mpscq.h )
@@ -97,6 +99,7 @@
   s.files += %w( src/core/lib/support/stack_lockfree.h )
   s.files += %w( src/core/lib/support/string.h )
   s.files += %w( src/core/lib/support/string_windows.h )
+  s.files += %w( src/core/lib/support/thd_internal.h )
   s.files += %w( src/core/lib/support/time_precise.h )
   s.files += %w( src/core/lib/support/tmpfile.h )
   s.files += %w( src/core/lib/profiling/basic_timers.cc )
@@ -113,6 +116,7 @@
   s.files += %w( src/core/lib/support/env_linux.cc )
   s.files += %w( src/core/lib/support/env_posix.cc )
   s.files += %w( src/core/lib/support/env_windows.cc )
+  s.files += %w( src/core/lib/support/fork.cc )
   s.files += %w( src/core/lib/support/histogram.cc )
   s.files += %w( src/core/lib/support/host_port.cc )
   s.files += %w( src/core/lib/support/log.cc )
@@ -157,6 +161,7 @@
   s.files += %w( include/grpc/impl/codegen/atm_gcc_atomic.h )
   s.files += %w( include/grpc/impl/codegen/atm_gcc_sync.h )
   s.files += %w( include/grpc/impl/codegen/atm_windows.h )
+  s.files += %w( include/grpc/impl/codegen/fork.h )
   s.files += %w( include/grpc/impl/codegen/gpr_slice.h )
   s.files += %w( include/grpc/impl/codegen/gpr_types.h )
   s.files += %w( include/grpc/impl/codegen/port_platform.h )
@@ -169,6 +174,7 @@
   s.files += %w( include/grpc/byte_buffer.h )
   s.files += %w( include/grpc/byte_buffer_reader.h )
   s.files += %w( include/grpc/compression.h )
+  s.files += %w( include/grpc/fork.h )
   s.files += %w( include/grpc/grpc.h )
   s.files += %w( include/grpc/grpc_posix.h )
   s.files += %w( include/grpc/grpc_security_constants.h )
@@ -427,6 +433,8 @@
   s.files += %w( src/core/lib/iomgr/ev_windows.cc )
   s.files += %w( src/core/lib/iomgr/exec_ctx.cc )
   s.files += %w( src/core/lib/iomgr/executor.cc )
+  s.files += %w( src/core/lib/iomgr/fork_posix.cc )
+  s.files += %w( src/core/lib/iomgr/fork_windows.cc )
   s.files += %w( src/core/lib/iomgr/gethostname_fallback.cc )
   s.files += %w( src/core/lib/iomgr/gethostname_host_name_max.cc )
   s.files += %w( src/core/lib/iomgr/gethostname_sysconf.cc )
diff --git a/grpc.gyp b/grpc.gyp
index fb15391..866a180 100644
--- a/grpc.gyp
+++ b/grpc.gyp
@@ -175,6 +175,7 @@
         'src/core/lib/support/env_linux.cc',
         'src/core/lib/support/env_posix.cc',
         'src/core/lib/support/env_windows.cc',
+        'src/core/lib/support/fork.cc',
         'src/core/lib/support/histogram.cc',
         'src/core/lib/support/host_port.cc',
         'src/core/lib/support/log.cc',
@@ -259,6 +260,8 @@
         'src/core/lib/iomgr/ev_windows.cc',
         'src/core/lib/iomgr/exec_ctx.cc',
         'src/core/lib/iomgr/executor.cc',
+        'src/core/lib/iomgr/fork_posix.cc',
+        'src/core/lib/iomgr/fork_windows.cc',
         'src/core/lib/iomgr/gethostname_fallback.cc',
         'src/core/lib/iomgr/gethostname_host_name_max.cc',
         'src/core/lib/iomgr/gethostname_sysconf.cc',
@@ -549,6 +552,8 @@
         'src/core/lib/iomgr/ev_windows.cc',
         'src/core/lib/iomgr/exec_ctx.cc',
         'src/core/lib/iomgr/executor.cc',
+        'src/core/lib/iomgr/fork_posix.cc',
+        'src/core/lib/iomgr/fork_windows.cc',
         'src/core/lib/iomgr/gethostname_fallback.cc',
         'src/core/lib/iomgr/gethostname_host_name_max.cc',
         'src/core/lib/iomgr/gethostname_sysconf.cc',
@@ -757,6 +762,8 @@
         'src/core/lib/iomgr/ev_windows.cc',
         'src/core/lib/iomgr/exec_ctx.cc',
         'src/core/lib/iomgr/executor.cc',
+        'src/core/lib/iomgr/fork_posix.cc',
+        'src/core/lib/iomgr/fork_windows.cc',
         'src/core/lib/iomgr/gethostname_fallback.cc',
         'src/core/lib/iomgr/gethostname_host_name_max.cc',
         'src/core/lib/iomgr/gethostname_sysconf.cc',
@@ -949,6 +956,8 @@
         'src/core/lib/iomgr/ev_windows.cc',
         'src/core/lib/iomgr/exec_ctx.cc',
         'src/core/lib/iomgr/executor.cc',
+        'src/core/lib/iomgr/fork_posix.cc',
+        'src/core/lib/iomgr/fork_windows.cc',
         'src/core/lib/iomgr/gethostname_fallback.cc',
         'src/core/lib/iomgr/gethostname_host_name_max.cc',
         'src/core/lib/iomgr/gethostname_sysconf.cc',
diff --git a/include/grpc/fork.h b/include/grpc/fork.h
new file mode 100644
index 0000000..ca45e11
--- /dev/null
+++ b/include/grpc/fork.h
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_FORK_H
+#define GRPC_FORK_H
+
+#include <grpc/impl/codegen/fork.h>
+
+#endif /* GRPC_FORK_H */
diff --git a/include/grpc/impl/codegen/fork.h b/include/grpc/impl/codegen/fork.h
new file mode 100644
index 0000000..baec7a2
--- /dev/null
+++ b/include/grpc/impl/codegen/fork.h
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_FORK_H
+#define GRPC_IMPL_CODEGEN_FORK_H
+
+/**
+ * gRPC applications should call this before calling fork().  There should be no
+ * active gRPC function calls between calling grpc_prefork() and
+ * grpc_postfork_parent()/grpc_postfork_child().
+ *
+ *
+ * Typical use:
+ * grpc_prefork();
+ * int pid = fork();
+ * if (pid) {
+ *  grpc_postfork_parent();
+ *  // Parent process..
+ * } else {
+ *  grpc_postfork_child();
+ *  // Child process...
+ * }
+ */
+
+void grpc_prefork();
+
+void grpc_postfork_parent();
+
+void grpc_postfork_child();
+
+void grpc_fork_handlers_auto_register();
+
+#endif /* GRPC_IMPL_CODEGEN_FORK_H */
diff --git a/include/grpc/module.modulemap b/include/grpc/module.modulemap
index 342adc0..0faa448 100644
--- a/include/grpc/module.modulemap
+++ b/include/grpc/module.modulemap
@@ -21,6 +21,7 @@
   header "support/tls.h"
   header "support/useful.h"
   header "impl/codegen/atm.h"
+  header "impl/codegen/fork.h"
   header "impl/codegen/gpr_slice.h"
   header "impl/codegen/gpr_types.h"
   header "impl/codegen/port_platform.h"
@@ -36,6 +37,7 @@
   header "impl/codegen/slice.h"
   header "impl/codegen/status.h"
   header "impl/codegen/atm.h"
+  header "impl/codegen/fork.h"
   header "impl/codegen/gpr_slice.h"
   header "impl/codegen/gpr_types.h"
   header "impl/codegen/port_platform.h"
@@ -45,6 +47,7 @@
   header "byte_buffer.h"
   header "byte_buffer_reader.h"
   header "compression.h"
+  header "fork.h"
   header "grpc.h"
   header "grpc_posix.h"
   header "grpc_security_constants.h"
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..2b7930c
--- /dev/null
+++ b/package.json
@@ -0,0 +1,103 @@
+{
+  "name": "grpc",
+  "version": "1.7.2",
+  "author": "Google Inc.",
+  "description": "gRPC Library for Node",
+  "homepage": "https://grpc.io/",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/grpc/grpc.git"
+  },
+  "bugs": "https://github.com/grpc/grpc/issues",
+  "contributors": [
+    {
+      "name": "Michael Lumish",
+      "email": "mlumish@google.com"
+    }
+  ],
+  "directories": {
+    "lib": "src/node/src"
+  },
+  "scripts": {
+    "lint": "node ./node_modules/jshint/bin/jshint src/node/src src/node/test src/node/interop src/node/index.js --exclude-path=src/node/.jshintignore",
+    "test": "./node_modules/.bin/mocha src/node/test && npm run-script lint",
+    "electron-build": "./node_modules/.bin/node-pre-gyp configure build --runtime=electron --disturl=https://atom.io/download/atom-shell",
+    "gen_docs": "./node_modules/.bin/jsdoc -c src/node/jsdoc_conf.json",
+    "coverage": "./node_modules/.bin/istanbul cover ./node_modules/.bin/_mocha src/node/test",
+    "install": "./node_modules/.bin/node-pre-gyp install --fallback-to-build --library=static_library"
+  },
+  "bundledDependencies": [
+    "node-pre-gyp"
+  ],
+  "dependencies": {
+    "arguejs": "^0.2.3",
+    "lodash": "^4.15.0",
+    "nan": "^2.0.0",
+    "node-pre-gyp": "^0.6.35",
+    "protobufjs": "^5.0.0"
+  },
+  "devDependencies": {
+    "async": "^2.0.1",
+    "body-parser": "^1.15.2",
+    "electron-mocha": "^3.1.1",
+    "express": "^4.14.0",
+    "google-auth-library": "^0.9.2",
+    "google-protobuf": "^3.0.0",
+    "istanbul": "^0.4.4",
+    "jsdoc": "^3.3.2",
+    "jshint": "^2.5.0",
+    "minimist": "^1.1.0",
+    "mocha": "^3.0.2",
+    "mocha-jenkins-reporter": "^0.2.3",
+    "poisson-process": "^0.2.1"
+  },
+  "engines": {
+    "node": ">=4"
+  },
+  "binary": {
+    "module_name": "grpc_node",
+    "module_path": "src/node/extension_binary/{node_abi}-{platform}-{arch}",
+    "host": "https://storage.googleapis.com/",
+    "remote_path": "grpc-precompiled-binaries/node/{name}/v{version}",
+    "package_name": "{node_abi}-{platform}-{arch}.tar.gz"
+  },
+  "files": [
+    "LICENSE",
+    "src/node/README.md",
+    "src/proto",
+    "etc",
+    "src/node/index.js",
+    "src/node/src",
+    "src/node/ext",
+    "include/grpc",
+    "src/core",
+    "src/boringssl",
+    "src/zlib",
+    "third_party/nanopb",
+    "third_party/zlib",
+    "third_party/boringssl",
+    "binding.gyp"
+  ],
+  "main": "src/node/index.js",
+  "license": "Apache-2.0",
+  "jshintConfig": {
+    "bitwise": true,
+    "curly": true,
+    "eqeqeq": true,
+    "esnext": true,
+    "freeze": true,
+    "immed": true,
+    "indent": 2,
+    "latedef": "nofunc",
+    "maxlen": 80,
+    "mocha": true,
+    "newcap": true,
+    "node": true,
+    "noarg": true,
+    "quotmark": "single",
+    "strict": true,
+    "trailing": true,
+    "undef": true,
+    "unused": "vars"
+  }
+}
diff --git a/package.xml b/package.xml
index 3356c27..7559106 100644
--- a/package.xml
+++ b/package.xml
@@ -13,8 +13,8 @@
  <date>2017-08-24</date>
  <time>16:06:07</time>
  <version>
-  <release>1.8.0dev</release>
-  <api>1.8.0dev</api>
+  <release>1.7.2</release>
+  <api>1.7.2</api>
  </version>
  <stability>
   <release>beta</release>
@@ -87,6 +87,7 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_atomic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_sync.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_windows.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/impl/codegen/fork.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_slice.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/port_platform.h" role="src" />
@@ -101,6 +102,7 @@
     <file baseinstalldir="/" name="src/core/lib/support/atomic_with_atm.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/atomic_with_std.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/env.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/support/fork.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/manual_constructor.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/memory.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/mpscq.h" role="src" />
@@ -109,6 +111,7 @@
     <file baseinstalldir="/" name="src/core/lib/support/stack_lockfree.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/string.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/string_windows.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/support/thd_internal.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/time_precise.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/tmpfile.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/profiling/basic_timers.cc" role="src" />
@@ -125,6 +128,7 @@
     <file baseinstalldir="/" name="src/core/lib/support/env_linux.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/env_posix.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/env_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/support/fork.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/histogram.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/host_port.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/log.cc" role="src" />
@@ -169,6 +173,7 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_atomic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_sync.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_windows.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/impl/codegen/fork.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_slice.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/port_platform.h" role="src" />
@@ -181,6 +186,7 @@
     <file baseinstalldir="/" name="include/grpc/byte_buffer.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/byte_buffer_reader.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/compression.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/fork.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/grpc.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/grpc_posix.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/grpc_security_constants.h" role="src" />
@@ -439,6 +445,8 @@
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_windows.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/exec_ctx.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/executor.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/iomgr/fork_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/iomgr/fork_windows.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/gethostname_fallback.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/gethostname_host_name_max.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/gethostname_sysconf.cc" role="src" />
diff --git a/setup.py b/setup.py
index bf8aea6..65aa02f 100644
--- a/setup.py
+++ b/setup.py
@@ -173,7 +173,7 @@
     # on msvc, but only for 32 bits
     DEFINE_MACROS += (('NTDDI_VERSION', 0x06000000),)
 else:
-  DEFINE_MACROS += (('HAVE_CONFIG_H', 1),)
+  DEFINE_MACROS += (('HAVE_CONFIG_H', 1), ('GRPC_ENABLE_FORK_SUPPORT', 1),)
 
 LDFLAGS = tuple(EXTRA_LINK_ARGS)
 CFLAGS = tuple(EXTRA_COMPILE_ARGS)
diff --git a/src/compiler/objective_c_generator.cc b/src/compiler/objective_c_generator.cc
index 349f1dc..583ed6d 100644
--- a/src/compiler/objective_c_generator.cc
+++ b/src/compiler/objective_c_generator.cc
@@ -31,6 +31,7 @@
 using ::grpc::protobuf::MethodDescriptor;
 using ::grpc::protobuf::ServiceDescriptor;
 using ::grpc::protobuf::io::Printer;
+using ::grpc::protobuf::FileDescriptor;
 using ::std::map;
 using ::std::set;
 
diff --git a/src/compiler/objective_c_generator.h b/src/compiler/objective_c_generator.h
index 2337aba..700c9c4 100644
--- a/src/compiler/objective_c_generator.h
+++ b/src/compiler/objective_c_generator.h
@@ -25,6 +25,7 @@
 
 using ::grpc::protobuf::FileDescriptor;
 using ::grpc::protobuf::ServiceDescriptor;
+using ::grpc::protobuf::FileDescriptor;
 using ::grpc::string;
 
 // Returns forward declaration of classes in the generated header file.
diff --git a/src/core/lib/iomgr/fork_posix.cc b/src/core/lib/iomgr/fork_posix.cc
new file mode 100644
index 0000000..a55b3a3
--- /dev/null
+++ b/src/core/lib/iomgr/fork_posix.cc
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_FORK
+
+#include <string.h>
+
+#include <grpc/fork.h>
+#include <grpc/support/log.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/useful.h>
+
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/timer_manager.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/fork.h"
+#include "src/core/lib/support/thd_internal.h"
+#include "src/core/lib/surface/init.h"
+
+/*
+ * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
+ *       AROUND VERY SPECIFIC USE CASES.
+ */
+
+void grpc_prefork() {
+  if (!grpc_fork_support_enabled()) {
+    gpr_log(GPR_ERROR,
+            "Fork support not enabled; try running with the "
+            "environment variable GRPC_ENABLE_FORK_SUPPORT=1");
+    return;
+  }
+  if (grpc_is_initialized()) {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_timer_manager_set_threading(false);
+    grpc_executor_set_threading(&exec_ctx, false);
+    grpc_exec_ctx_finish(&exec_ctx);
+    if (!gpr_await_threads(
+            gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                         gpr_time_from_seconds(3, GPR_TIMESPAN)))) {
+      gpr_log(GPR_ERROR, "gRPC thread still active! Cannot fork!");
+    }
+  }
+}
+
+void grpc_postfork_parent() {
+  if (grpc_is_initialized()) {
+    grpc_timer_manager_set_threading(true);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_executor_set_threading(&exec_ctx, true);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+}
+
+void grpc_postfork_child() {
+  if (grpc_is_initialized()) {
+    grpc_timer_manager_set_threading(true);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_executor_set_threading(&exec_ctx, true);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+}
+
+void grpc_fork_handlers_auto_register() {
+  if (grpc_fork_support_enabled()) {
+    pthread_atfork(grpc_prefork, grpc_postfork_parent, grpc_postfork_child);
+  }
+}
+
+#endif  // GRPC_POSIX_FORK
diff --git a/src/core/lib/iomgr/fork_windows.cc b/src/core/lib/iomgr/fork_windows.cc
new file mode 100644
index 0000000..f9986f3
--- /dev/null
+++ b/src/core/lib/iomgr/fork_windows.cc
@@ -0,0 +1,39 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifndef GRPC_POSIX_FORK
+
+#include <grpc/fork.h>
+#include <grpc/support/log.h>
+
+/*
+ * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
+ *       AROUND VERY SPECIFIC USE CASES.
+ */
+
+void grpc_prefork() { gpr_log(GPR_ERROR, "Forking not supported on Windows"); }
+
+void grpc_postfork_parent() {}
+
+void grpc_postfork_child() {}
+
+void grpc_fork_handlers_auto_register() {}
+
+#endif  // GRPC_POSIX_FORK
diff --git a/src/core/lib/iomgr/port.h b/src/core/lib/iomgr/port.h
index 1cc6d98..9fae8c0 100644
--- a/src/core/lib/iomgr/port.h
+++ b/src/core/lib/iomgr/port.h
@@ -30,6 +30,7 @@
 #define GRPC_HAVE_IP_PKTINFO 1
 #define GRPC_HAVE_MSG_NOSIGNAL 1
 #define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_FORK 1
 #define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
 #define GRPC_POSIX_SOCKET 1
 #define GRPC_POSIX_SOCKETADDR 1
@@ -59,6 +60,7 @@
 #define GRPC_HAVE_MSG_NOSIGNAL 1
 #define GRPC_HAVE_UNIX_SOCKET 1
 #define GRPC_LINUX_MULTIPOLL_WITH_EPOLL 1
+#define GRPC_POSIX_FORK 1
 #define GRPC_POSIX_HOST_NAME_MAX 1
 #define GRPC_POSIX_SOCKET 1
 #define GRPC_POSIX_SOCKETADDR 1
@@ -90,6 +92,7 @@
 #define GRPC_HAVE_SO_NOSIGPIPE 1
 #define GRPC_HAVE_UNIX_SOCKET 1
 #define GRPC_MSG_IOVLEN_TYPE int
+#define GRPC_POSIX_FORK 1
 #define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
 #define GRPC_POSIX_SOCKET 1
 #define GRPC_POSIX_SOCKETADDR 1
@@ -103,6 +106,7 @@
 #define GRPC_HAVE_IPV6_RECVPKTINFO 1
 #define GRPC_HAVE_SO_NOSIGPIPE 1
 #define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_FORK 1
 #define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
 #define GRPC_POSIX_SOCKET 1
 #define GRPC_POSIX_SOCKETADDR 1
diff --git a/src/core/lib/support/fork.cc b/src/core/lib/support/fork.cc
new file mode 100644
index 0000000..2f29af8
--- /dev/null
+++ b/src/core/lib/support/fork.cc
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/support/fork.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/useful.h>
+
+#include "src/core/lib/support/env.h"
+
+/*
+ * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
+ *       AROUND VERY SPECIFIC USE CASES.
+ */
+
+static int override_fork_support_enabled = -1;
+static int fork_support_enabled;
+
+void grpc_fork_support_init() {
+#ifdef GRPC_ENABLE_FORK_SUPPORT
+  fork_support_enabled = 1;
+#else
+  fork_support_enabled = 0;
+  char *env = gpr_getenv("GRPC_ENABLE_FORK_SUPPORT");
+  if (env != NULL) {
+    static const char *truthy[] = {"yes",  "Yes",  "YES", "true",
+                                   "True", "TRUE", "1"};
+    for (size_t i = 0; i < GPR_ARRAY_SIZE(truthy); i++) {
+      if (0 == strcmp(env, truthy[i])) {
+        fork_support_enabled = 1;
+      }
+    }
+    gpr_free(env);
+  }
+#endif
+  if (override_fork_support_enabled != -1) {
+    fork_support_enabled = override_fork_support_enabled;
+  }
+}
+
+int grpc_fork_support_enabled() { return fork_support_enabled; }
+
+void grpc_enable_fork_support(int enable) {
+  override_fork_support_enabled = enable;
+}
diff --git a/src/core/lib/support/fork.h b/src/core/lib/support/fork.h
new file mode 100644
index 0000000..215d4214
--- /dev/null
+++ b/src/core/lib/support/fork.h
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SUPPORT_FORK_H
+#define GRPC_CORE_LIB_SUPPORT_FORK_H
+
+/*
+ * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
+ *       AROUND VERY SPECIFIC USE CASES.
+ */
+
+void grpc_fork_support_init(void);
+
+int grpc_fork_support_enabled(void);
+
+// Test only:  Must be called before grpc_init(), and overrides
+// environment variables/compile flags
+void grpc_enable_fork_support(int enable);
+
+#endif /* GRPC_CORE_LIB_SUPPORT_FORK_H */
diff --git a/src/core/lib/support/thd_internal.h b/src/core/lib/support/thd_internal.h
new file mode 100644
index 0000000..38bffc8
--- /dev/null
+++ b/src/core/lib/support/thd_internal.h
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H
+#define GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H
+
+#include <grpc/support/time.h>
+
+/* Internal interfaces between modules within the gpr support library.  */
+void gpr_thd_init();
+
+/* Wait for all outstanding threads to finish, up to deadline */
+int gpr_await_threads(gpr_timespec deadline);
+
+#endif /* GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H */
diff --git a/src/core/lib/support/thd_posix.cc b/src/core/lib/support/thd_posix.cc
index 02e3846..c2a4f41 100644
--- a/src/core/lib/support/thd_posix.cc
+++ b/src/core/lib/support/thd_posix.cc
@@ -24,22 +24,34 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include <grpc/support/sync.h>
 #include <grpc/support/thd.h>
 #include <grpc/support/useful.h>
 #include <pthread.h>
 #include <stdlib.h>
 #include <string.h>
 
+#include "src/core/lib/support/fork.h"
+
+static gpr_mu g_mu;
+static gpr_cv g_cv;
+static int g_thread_count;
+static int g_awaiting_threads;
+
 struct thd_arg {
   void (*body)(void* arg); /* body of a thread */
   void* arg;               /* argument to a thread */
 };
 
+static void inc_thd_count();
+static void dec_thd_count();
+
 /* Body of every thread started via gpr_thd_new. */
 static void* thread_body(void* v) {
   struct thd_arg a = *(struct thd_arg*)v;
   free(v);
   (*a.body)(a.arg);
+  dec_thd_count();
   return nullptr;
 }
 
@@ -54,6 +66,7 @@
   GPR_ASSERT(a != nullptr);
   a->body = thd_body;
   a->arg = arg;
+  inc_thd_count();
 
   GPR_ASSERT(pthread_attr_init(&attr) == 0);
   if (gpr_thd_options_is_detached(options)) {
@@ -68,6 +81,7 @@
   if (!thread_started) {
     /* don't use gpr_free, as this was allocated using malloc (see above) */
     free(a);
+    dec_thd_count();
   }
   *t = (gpr_thd_id)p;
   return thread_started;
@@ -77,4 +91,46 @@
 
 void gpr_thd_join(gpr_thd_id t) { pthread_join((pthread_t)t, nullptr); }
 
+/*****************************************
+ * Only used when fork support is enabled
+ */
+
+static void inc_thd_count() {
+  if (grpc_fork_support_enabled()) {
+    gpr_mu_lock(&g_mu);
+    g_thread_count++;
+    gpr_mu_unlock(&g_mu);
+  }
+}
+
+static void dec_thd_count() {
+  if (grpc_fork_support_enabled()) {
+    gpr_mu_lock(&g_mu);
+    g_thread_count--;
+    if (g_awaiting_threads && g_thread_count == 0) {
+      gpr_cv_signal(&g_cv);
+    }
+    gpr_mu_unlock(&g_mu);
+  }
+}
+
+void gpr_thd_init() {
+  gpr_mu_init(&g_mu);
+  gpr_cv_init(&g_cv);
+  g_thread_count = 0;
+  g_awaiting_threads = 0;
+}
+
+int gpr_await_threads(gpr_timespec deadline) {
+  gpr_mu_lock(&g_mu);
+  g_awaiting_threads = 1;
+  int res = 0;
+  if (g_thread_count > 0) {
+    res = gpr_cv_wait(&g_cv, &g_mu, deadline);
+  }
+  g_awaiting_threads = 0;
+  gpr_mu_unlock(&g_mu);
+  return res == 0;
+}
+
 #endif /* GPR_POSIX_SYNC */
diff --git a/src/core/lib/support/thd_windows.cc b/src/core/lib/support/thd_windows.cc
index 5bda7f4..0875c2f 100644
--- a/src/core/lib/support/thd_windows.cc
+++ b/src/core/lib/support/thd_windows.cc
@@ -50,6 +50,8 @@
   gpr_free(t);
 }
 
+void gpr_thd_init(void) {}
+
 /* Body of every thread started via gpr_thd_new. */
 static DWORD WINAPI thread_body(void* v) {
   g_thd_info = (struct thd_info*)v;
diff --git a/src/core/lib/surface/init.cc b/src/core/lib/surface/init.cc
index c6d2f0a..8ee1383 100644
--- a/src/core/lib/surface/init.cc
+++ b/src/core/lib/surface/init.cc
@@ -21,6 +21,7 @@
 #include <limits.h>
 #include <memory.h>
 
+#include <grpc/fork.h>
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -39,6 +40,8 @@
 #include "src/core/lib/iomgr/timer_manager.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/support/fork.h"
+#include "src/core/lib/support/thd_internal.h"
 #include "src/core/lib/surface/alarm_internal.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/call.h"
@@ -62,10 +65,12 @@
 
 static void do_basic_init(void) {
   gpr_log_verbosity_init();
+  grpc_fork_support_init();
   gpr_mu_init(&g_init_mu);
   grpc_register_built_in_plugins();
   grpc_cq_global_init();
   g_initializations = 0;
+  grpc_fork_handlers_auto_register();
 }
 
 static bool append_filter(grpc_exec_ctx* exec_ctx,
@@ -122,6 +127,7 @@
   gpr_mu_lock(&g_init_mu);
   if (++g_initializations == 1) {
     gpr_time_init();
+    gpr_thd_init();
     grpc_stats_init();
     grpc_slice_intern_init();
     grpc_mdctx_global_init();
diff --git a/src/core/lib/surface/version.cc b/src/core/lib/surface/version.cc
index f4feadc..5c06c66 100644
--- a/src/core/lib/surface/version.cc
+++ b/src/core/lib/surface/version.cc
@@ -21,6 +21,6 @@
 
 #include <grpc/grpc.h>
 
-const char* grpc_version_string(void) { return "5.0.0-dev"; }
+const char* grpc_version_string(void) { return "5.0.0"; }
 
-const char* grpc_g_stands_for(void) { return "generous"; }
+const char* grpc_g_stands_for(void) { return "gambit"; }
diff --git a/src/cpp/common/version_cc.cc b/src/cpp/common/version_cc.cc
index e1e5e89..49de8ba 100644
--- a/src/cpp/common/version_cc.cc
+++ b/src/cpp/common/version_cc.cc
@@ -22,5 +22,5 @@
 #include <grpc++/grpc++.h>
 
 namespace grpc {
-grpc::string Version() { return "1.8.0-dev"; }
+grpc::string Version() { return "1.7.2"; }
 }  // namespace grpc
diff --git a/src/csharp/Grpc.Core.Tests/CallCancellationTest.cs b/src/csharp/Grpc.Core.Tests/CallCancellationTest.cs
new file mode 100644
index 0000000..e040f52
--- /dev/null
+++ b/src/csharp/Grpc.Core.Tests/CallCancellationTest.cs
@@ -0,0 +1,182 @@
+#region Copyright notice and license
+
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Grpc.Core;
+using Grpc.Core.Internal;
+using Grpc.Core.Profiling;
+using Grpc.Core.Utils;
+using NUnit.Framework;
+
+namespace Grpc.Core.Tests
+{
+    public class CallCancellationTest
+    {
+        const string Host = "127.0.0.1";
+
+        MockServiceHelper helper;
+        Server server;
+        Channel channel;
+
+        [SetUp]
+        public void Init()
+        {
+            helper = new MockServiceHelper(Host);
+            server = helper.GetServer();
+            server.Start();
+            channel = helper.GetChannel();
+        }
+
+        [TearDown]
+        public void Cleanup()
+        {
+            channel.ShutdownAsync().Wait();
+            server.ShutdownAsync().Wait();
+        }
+
+        [Test]
+        public async Task ClientStreamingCall_CancelAfterBegin()
+        {
+            var barrier = new TaskCompletionSource<object>();
+
+            helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) =>
+            {
+                barrier.SetResult(null);
+                await requestStream.ToListAsync();
+                return "";
+            });
+
+            var cts = new CancellationTokenSource();
+            var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall(new CallOptions(cancellationToken: cts.Token)));
+
+            await barrier.Task;  // make sure the handler has started.
+            cts.Cancel();
+
+            try
+            {
+                // cannot use Assert.ThrowsAsync because it uses Task.Wait and would deadlock.
+                await call.ResponseAsync;
+                Assert.Fail();
+            }
+            catch (RpcException ex)
+            {
+                Assert.AreEqual(StatusCode.Cancelled, ex.Status.StatusCode);
+            }
+        }
+
+        [Test]
+        public async Task ClientStreamingCall_ServerSideReadAfterCancelNotificationReturnsNull()
+        {
+            var handlerStartedBarrier = new TaskCompletionSource<object>();
+            var cancelNotificationReceivedBarrier = new TaskCompletionSource<object>();
+            var successTcs = new TaskCompletionSource<string>();
+
+            helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) =>
+            {
+                handlerStartedBarrier.SetResult(null);
+
+                // wait for cancellation to be delivered.
+                context.CancellationToken.Register(() => cancelNotificationReceivedBarrier.SetResult(null));
+                await cancelNotificationReceivedBarrier.Task;
+
+                var moveNextResult = await requestStream.MoveNext();
+                successTcs.SetResult(!moveNextResult ? "SUCCESS" : "FAIL");
+                return "";
+            });
+
+            var cts = new CancellationTokenSource();
+            var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall(new CallOptions(cancellationToken: cts.Token)));
+
+            await handlerStartedBarrier.Task;
+            cts.Cancel();
+
+            try
+            {
+                await call.ResponseAsync;
+                Assert.Fail();
+            }
+            catch (RpcException ex)
+            {
+                Assert.AreEqual(StatusCode.Cancelled, ex.Status.StatusCode);
+            }
+            Assert.AreEqual("SUCCESS", await successTcs.Task);
+        }
+
+        [Test]
+        public async Task ClientStreamingCall_CancelServerSideRead()
+        {
+            helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) =>
+            {
+                var cts = new CancellationTokenSource();
+                var moveNextTask = requestStream.MoveNext(cts.Token);
+                cts.Cancel();
+                await moveNextTask;
+                return "";
+            });
+
+            var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall());
+            try
+            {
+                // cannot use Assert.ThrowsAsync because it uses Task.Wait and would deadlock.
+                await call.ResponseAsync;
+                Assert.Fail();
+            }
+            catch (RpcException ex)
+            {
+                Assert.AreEqual(StatusCode.Cancelled, ex.Status.StatusCode);
+            }
+        }
+
+        [Test]
+        public async Task ServerStreamingCall_CancelClientSideRead()
+        {
+            helper.ServerStreamingHandler = new ServerStreamingServerMethod<string, string>(async (request, responseStream, context) =>
+            {
+                await responseStream.WriteAsync("abc");
+                while (!context.CancellationToken.IsCancellationRequested)
+                {
+                    await Task.Delay(10);
+                }
+            });
+
+            var call = Calls.AsyncServerStreamingCall(helper.CreateServerStreamingCall(), "");
+            await call.ResponseStream.MoveNext();
+            Assert.AreEqual("abc", call.ResponseStream.Current);
+
+            var cts = new CancellationTokenSource();
+            var moveNextTask = call.ResponseStream.MoveNext(cts.Token);
+            cts.Cancel();
+
+            try
+            {
+                // cannot use Assert.ThrowsAsync because it uses Task.Wait and would deadlock.
+                await moveNextTask;
+                Assert.Fail();
+            }
+            catch (RpcException ex)
+            {
+                Assert.AreEqual(StatusCode.Cancelled, ex.Status.StatusCode);
+            }
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core.Tests/ClientServerTest.cs b/src/csharp/Grpc.Core.Tests/ClientServerTest.cs
index 72d9035..90dd365 100644
--- a/src/csharp/Grpc.Core.Tests/ClientServerTest.cs
+++ b/src/csharp/Grpc.Core.Tests/ClientServerTest.cs
@@ -273,74 +273,6 @@
         }
 
         [Test]
-        public async Task ClientStreamingCall_CancelAfterBegin()
-        {
-            var barrier = new TaskCompletionSource<object>();
-
-            helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) =>
-            {
-                barrier.SetResult(null);
-                await requestStream.ToListAsync();
-                return "";
-            });
-
-            var cts = new CancellationTokenSource();
-            var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall(new CallOptions(cancellationToken: cts.Token)));
-
-            await barrier.Task;  // make sure the handler has started.
-            cts.Cancel();
-
-            try
-            {
-                // cannot use Assert.ThrowsAsync because it uses Task.Wait and would deadlock.
-                await call.ResponseAsync;
-                Assert.Fail();
-            }
-            catch (RpcException ex)
-            {
-                Assert.AreEqual(StatusCode.Cancelled, ex.Status.StatusCode);
-            }
-        }
-
-        [Test]
-        public async Task ClientStreamingCall_ServerSideReadAfterCancelNotificationReturnsNull()
-        {
-            var handlerStartedBarrier = new TaskCompletionSource<object>();
-            var cancelNotificationReceivedBarrier = new TaskCompletionSource<object>();
-            var successTcs = new TaskCompletionSource<string>();
-
-            helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) =>
-            {
-                handlerStartedBarrier.SetResult(null);
-
-                // wait for cancellation to be delivered.
-                context.CancellationToken.Register(() => cancelNotificationReceivedBarrier.SetResult(null));
-                await cancelNotificationReceivedBarrier.Task;
-
-                var moveNextResult = await requestStream.MoveNext();
-                successTcs.SetResult(!moveNextResult ? "SUCCESS" : "FAIL");
-                return "";
-            });
-
-            var cts = new CancellationTokenSource();
-            var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall(new CallOptions(cancellationToken: cts.Token)));
-
-            await handlerStartedBarrier.Task;
-            cts.Cancel();
-
-            try
-            {
-                await call.ResponseAsync;
-                Assert.Fail();
-            }
-            catch (RpcException ex)
-            {
-                Assert.AreEqual(StatusCode.Cancelled, ex.Status.StatusCode);
-            }
-            Assert.AreEqual("SUCCESS", await successTcs.Task);
-        }
-
-        [Test]
         public async Task AsyncUnaryCall_EchoMetadata()
         {
             helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
diff --git a/src/csharp/Grpc.Core/IAsyncStreamReader.cs b/src/csharp/Grpc.Core/IAsyncStreamReader.cs
index 42bfbb8..3751d54 100644
--- a/src/csharp/Grpc.Core/IAsyncStreamReader.cs
+++ b/src/csharp/Grpc.Core/IAsyncStreamReader.cs
@@ -41,6 +41,13 @@
     /// (<c>MoveNext</c> will return <c>false</c>) and the <c>CancellationToken</c>
     /// associated with the call will be cancelled to signal the failure.
     /// </para>
+    /// <para>
+    /// <c>MoveNext()</c> operations can be cancelled via a cancellation token. Cancelling
+    /// an individual read operation has the same effect as cancelling the entire call
+    /// (which will also result in the read operation returning prematurely), but the per-read cancellation
+    /// tokens passed to MoveNext() only result in cancelling the call if the read operation haven't finished
+    /// yet.
+    /// </para>
     /// </summary>
     /// <typeparam name="T">The message type.</typeparam>
     public interface IAsyncStreamReader<T> : IAsyncEnumerator<T>
diff --git a/src/csharp/Grpc.Core/Internal/ClientResponseStream.cs b/src/csharp/Grpc.Core/Internal/ClientResponseStream.cs
index 851b6ca..ab649ee 100644
--- a/src/csharp/Grpc.Core/Internal/ClientResponseStream.cs
+++ b/src/csharp/Grpc.Core/Internal/ClientResponseStream.cs
@@ -49,19 +49,19 @@
 
         public async Task<bool> MoveNext(CancellationToken token)
         {
-            if (token != CancellationToken.None)
+            var cancellationTokenRegistration = token.CanBeCanceled ? token.Register(() => call.Cancel()) : (IDisposable) null;
+            using (cancellationTokenRegistration)
             {
-                throw new InvalidOperationException("Cancellation of individual reads is not supported.");
-            }
-            var result = await call.ReadMessageAsync().ConfigureAwait(false);
-            this.current = result;
+                var result = await call.ReadMessageAsync().ConfigureAwait(false);
+                this.current = result;
 
-            if (result == null)
-            {
-                await call.StreamingResponseCallFinishedTask.ConfigureAwait(false);
-                return false;
+                if (result == null)
+                {
+                    await call.StreamingResponseCallFinishedTask.ConfigureAwait(false);
+                    return false;
+                }
+                return true;
             }
-            return true;
         }
 
         public void Dispose()
diff --git a/src/csharp/Grpc.Core/Internal/ServerRequestStream.cs b/src/csharp/Grpc.Core/Internal/ServerRequestStream.cs
index c65b960..058dddb 100644
--- a/src/csharp/Grpc.Core/Internal/ServerRequestStream.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerRequestStream.cs
@@ -49,13 +49,14 @@
 
         public async Task<bool> MoveNext(CancellationToken token)
         {
-            if (token != CancellationToken.None)
+            
+            var cancellationTokenRegistration = token.CanBeCanceled ? token.Register(() => call.Cancel()) : (IDisposable) null;
+            using (cancellationTokenRegistration)
             {
-                throw new InvalidOperationException("Cancellation of individual reads is not supported.");
+                var result = await call.ReadMessageAsync().ConfigureAwait(false);
+                this.current = result;
+                return result != null;
             }
-            var result = await call.ReadMessageAsync().ConfigureAwait(false);
-            this.current = result;
-            return result != null;
         }
 
         public void Dispose()
diff --git a/src/csharp/Grpc.Core/Version.csproj.include b/src/csharp/Grpc.Core/Version.csproj.include
index b9ceaf8..7cae4a5 100755
--- a/src/csharp/Grpc.Core/Version.csproj.include
+++ b/src/csharp/Grpc.Core/Version.csproj.include
@@ -1,7 +1,7 @@
 <!-- This file is generated -->
 <Project>
   <PropertyGroup>
-    <GrpcCsharpVersion>1.8.0-dev</GrpcCsharpVersion>
+    <GrpcCsharpVersion>1.7.2</GrpcCsharpVersion>
     <GoogleProtobufVersion>3.3.0</GoogleProtobufVersion>
   </PropertyGroup>
 </Project>
diff --git a/src/csharp/Grpc.Core/VersionInfo.cs b/src/csharp/Grpc.Core/VersionInfo.cs
index dab9388..e4c97ff 100644
--- a/src/csharp/Grpc.Core/VersionInfo.cs
+++ b/src/csharp/Grpc.Core/VersionInfo.cs
@@ -33,11 +33,11 @@
         /// <summary>
         /// Current <c>AssemblyFileVersion</c> of gRPC C# assemblies
         /// </summary>
-        public const string CurrentAssemblyFileVersion = "1.8.0.0";
+        public const string CurrentAssemblyFileVersion = "1.7.2.0";
 
         /// <summary>
         /// Current version of gRPC C#
         /// </summary>
-        public const string CurrentVersion = "1.8.0-dev";
+        public const string CurrentVersion = "1.7.2";
     }
 }
diff --git a/src/csharp/build_packages_dotnetcli.bat b/src/csharp/build_packages_dotnetcli.bat
index ff013d5..3be049a 100755
--- a/src/csharp/build_packages_dotnetcli.bat
+++ b/src/csharp/build_packages_dotnetcli.bat
@@ -13,7 +13,7 @@
 @rem limitations under the License.
 
 @rem Current package versions
-set VERSION=1.8.0-dev
+set VERSION=1.7.2
 
 @rem Adjust the location of nuget.exe
 set NUGET=C:\nuget\nuget.exe
diff --git a/src/csharp/build_packages_dotnetcli.sh b/src/csharp/build_packages_dotnetcli.sh
index 44a4791..cf565b2 100755
--- a/src/csharp/build_packages_dotnetcli.sh
+++ b/src/csharp/build_packages_dotnetcli.sh
@@ -39,7 +39,7 @@
 dotnet pack --configuration Release Grpc.HealthCheck --output ../../../artifacts
 dotnet pack --configuration Release Grpc.Reflection --output ../../../artifacts
 
-nuget pack Grpc.nuspec -Version "1.8.0-dev" -OutputDirectory ../../artifacts
-nuget pack Grpc.Tools.nuspec -Version "1.8.0-dev" -OutputDirectory ../../artifacts
+nuget pack Grpc.nuspec -Version "1.7.2" -OutputDirectory ../../artifacts
+nuget pack Grpc.Tools.nuspec -Version "1.7.2" -OutputDirectory ../../artifacts
 
 (cd ../../artifacts && zip csharp_nugets_dotnetcli.zip *.nupkg)
diff --git a/src/csharp/tests.json b/src/csharp/tests.json
index 7841051..65a0ed2 100644
--- a/src/csharp/tests.json
+++ b/src/csharp/tests.json
@@ -10,6 +10,7 @@
     "Grpc.Core.Tests.AppDomainUnloadTest",
     "Grpc.Core.Tests.AuthContextTest",
     "Grpc.Core.Tests.AuthPropertyTest",
+    "Grpc.Core.Tests.CallCancellationTest",
     "Grpc.Core.Tests.CallCredentialsTest",
     "Grpc.Core.Tests.CallOptionsTest",
     "Grpc.Core.Tests.ChannelCredentialsTest",
diff --git a/src/node/health_check/package.json b/src/node/health_check/package.json
new file mode 100644
index 0000000..fca3a2a
--- /dev/null
+++ b/src/node/health_check/package.json
@@ -0,0 +1,29 @@
+{
+  "name": "grpc-health-check",
+  "version": "1.7.2",
+  "author": "Google Inc.",
+  "description": "Health check service for use with gRPC",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/grpc/grpc.git"
+  },
+  "bugs": "https://github.com/grpc/grpc/issues",
+  "contributors": [
+    {
+      "name": "Michael Lumish",
+      "email": "mlumish@google.com"
+    }
+  ],
+  "dependencies": {
+    "grpc": "^1.7.2",
+    "lodash": "^3.9.3",
+    "google-protobuf": "^3.0.0"
+  },
+  "files": [
+    "LICENSE",
+    "health.js",
+    "v1"
+  ],
+  "main": "src/node/index.js",
+  "license": "Apache-2.0"
+}
diff --git a/src/node/tools/package.json b/src/node/tools/package.json
new file mode 100644
index 0000000..99fd854
--- /dev/null
+++ b/src/node/tools/package.json
@@ -0,0 +1,41 @@
+{
+  "name": "grpc-tools",
+  "version": "1.7.2",
+  "author": "Google Inc.",
+  "description": "Tools for developing with gRPC on Node.js",
+  "homepage": "https://grpc.io/",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/grpc/grpc.git"
+  },
+  "bugs": "https://github.com/grpc/grpc/issues",
+  "contributors": [
+    {
+      "name": "Michael Lumish",
+      "email": "mlumish@google.com"
+    }
+  ],
+  "bin": {
+    "grpc_tools_node_protoc": "./bin/protoc.js",
+    "grpc_tools_node_protoc_plugin": "./bin/protoc_plugin.js"
+  },
+  "scripts": {
+    "install": "./node_modules/.bin/node-pre-gyp install"
+  },
+  "bundledDependencies": ["node-pre-gyp"],
+  "binary": {
+    "module_name": "grpc_tools",
+    "host": "https://storage.googleapis.com/",
+    "remote_path": "grpc-precompiled-binaries/node/{name}/v{version}",
+    "package_name": "{platform}-{arch}.tar.gz",
+    "module_path": "bin"
+  },
+  "files": [
+    "index.js",
+    "bin/protoc.js",
+    "bin/protoc_plugin.js",
+    "bin/google/protobuf",
+    "LICENSE"
+  ],
+  "main": "index.js"
+}
diff --git "a/src/objective-c/\041ProtoCompiler-gRPCPlugin.podspec" "b/src/objective-c/\041ProtoCompiler-gRPCPlugin.podspec"
index 9065ab9..616fa01 100644
--- "a/src/objective-c/\041ProtoCompiler-gRPCPlugin.podspec"
+++ "b/src/objective-c/\041ProtoCompiler-gRPCPlugin.podspec"
@@ -42,7 +42,7 @@
   # exclamation mark ensures that other "regular" pods will be able to find it as it'll be installed
   # before them.
   s.name     = '!ProtoCompiler-gRPCPlugin'
-  v = '1.8.0-dev'
+  v = '1.7.2'
   s.version  = v
   s.summary  = 'The gRPC ProtoC plugin generates Objective-C files from .proto services.'
   s.description = <<-DESC
diff --git a/src/objective-c/GRPCClient/private/version.h b/src/objective-c/GRPCClient/private/version.h
index db589d1..ace39f7 100644
--- a/src/objective-c/GRPCClient/private/version.h
+++ b/src/objective-c/GRPCClient/private/version.h
@@ -23,4 +23,4 @@
 // `tools/buildgen/generate_projects.sh`.
 
 
-#define GRPC_OBJC_VERSION_STRING @"1.8.0-dev"
+#define GRPC_OBJC_VERSION_STRING @"1.7.2"
diff --git a/src/objective-c/tests/version.h b/src/objective-c/tests/version.h
index 0251506..c3d5719 100644
--- a/src/objective-c/tests/version.h
+++ b/src/objective-c/tests/version.h
@@ -23,5 +23,5 @@
 // `tools/buildgen/generate_projects.sh`.
 
 
-#define GRPC_OBJC_VERSION_STRING @"1.8.0-dev"
-#define GRPC_C_VERSION_STRING @"5.0.0-dev"
+#define GRPC_OBJC_VERSION_STRING @"1.7.2"
+#define GRPC_C_VERSION_STRING @"5.0.0"
diff --git a/src/php/composer.json b/src/php/composer.json
index 09471d2..ad44833 100644
--- a/src/php/composer.json
+++ b/src/php/composer.json
@@ -2,7 +2,7 @@
   "name": "grpc/grpc-dev",
   "description": "gRPC library for PHP - for Developement use only",
   "license": "Apache-2.0",
-  "version": "1.8.0",
+  "version": "1.7.2",
   "require": {
     "php": ">=5.5.0",
     "google/protobuf": "^v3.3.0"
diff --git a/src/php/ext/grpc/version.h b/src/php/ext/grpc/version.h
index 93dd563..1083c2c 100644
--- a/src/php/ext/grpc/version.h
+++ b/src/php/ext/grpc/version.h
@@ -20,6 +20,6 @@
 #ifndef VERSION_H
 #define VERSION_H
 
-#define PHP_GRPC_VERSION "1.8.0dev"
+#define PHP_GRPC_VERSION "1.7.2"
 
 #endif /* VERSION_H */
diff --git a/src/python/grpcio/grpc/_grpcio_metadata.py b/src/python/grpcio/grpc/_grpcio_metadata.py
index 0887ac1..500a253 100644
--- a/src/python/grpcio/grpc/_grpcio_metadata.py
+++ b/src/python/grpcio/grpc/_grpcio_metadata.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio/grpc/_grpcio_metadata.py.template`!!!
 
-__version__ = """1.8.0.dev0"""
+__version__ = """1.7.2"""
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index 330c418..665b2ac 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -29,6 +29,7 @@
   'src/core/lib/support/env_linux.cc',
   'src/core/lib/support/env_posix.cc',
   'src/core/lib/support/env_windows.cc',
+  'src/core/lib/support/fork.cc',
   'src/core/lib/support/histogram.cc',
   'src/core/lib/support/host_port.cc',
   'src/core/lib/support/log.cc',
@@ -94,6 +95,8 @@
   'src/core/lib/iomgr/ev_windows.cc',
   'src/core/lib/iomgr/exec_ctx.cc',
   'src/core/lib/iomgr/executor.cc',
+  'src/core/lib/iomgr/fork_posix.cc',
+  'src/core/lib/iomgr/fork_windows.cc',
   'src/core/lib/iomgr/gethostname_fallback.cc',
   'src/core/lib/iomgr/gethostname_host_name_max.cc',
   'src/core/lib/iomgr/gethostname_sysconf.cc',
diff --git a/src/python/grpcio/grpc_version.py b/src/python/grpcio/grpc_version.py
index 61c4157..a5d4b20 100644
--- a/src/python/grpcio/grpc_version.py
+++ b/src/python/grpcio/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio/grpc_version.py.template`!!!
 
-VERSION='1.8.0.dev0'
+VERSION='1.7.2'
diff --git a/src/python/grpcio_health_checking/grpc_version.py b/src/python/grpcio_health_checking/grpc_version.py
index 889297f..dc1bc96 100644
--- a/src/python/grpcio_health_checking/grpc_version.py
+++ b/src/python/grpcio_health_checking/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_health_checking/grpc_version.py.template`!!!
 
-VERSION='1.8.0.dev0'
+VERSION='1.7.2'
diff --git a/src/python/grpcio_reflection/grpc_version.py b/src/python/grpcio_reflection/grpc_version.py
index 192f4cc..3744cb6 100644
--- a/src/python/grpcio_reflection/grpc_version.py
+++ b/src/python/grpcio_reflection/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_reflection/grpc_version.py.template`!!!
 
-VERSION='1.8.0.dev0'
+VERSION='1.7.2'
diff --git a/src/python/grpcio_testing/grpc_version.py b/src/python/grpcio_testing/grpc_version.py
index 83470c2..fbf9f22 100644
--- a/src/python/grpcio_testing/grpc_version.py
+++ b/src/python/grpcio_testing/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_testing/grpc_version.py.template`!!!
 
-VERSION='1.8.0.dev0'
+VERSION='1.7.2'
diff --git a/src/python/grpcio_tests/grpc_version.py b/src/python/grpcio_tests/grpc_version.py
index 7065edd..abd6b50 100644
--- a/src/python/grpcio_tests/grpc_version.py
+++ b/src/python/grpcio_tests/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_tests/grpc_version.py.template`!!!
 
-VERSION='1.8.0.dev0'
+VERSION='1.7.2'
diff --git a/src/ruby/lib/grpc/version.rb b/src/ruby/lib/grpc/version.rb
index 3001579..9b9007c 100644
--- a/src/ruby/lib/grpc/version.rb
+++ b/src/ruby/lib/grpc/version.rb
@@ -14,5 +14,5 @@
 
 # GRPC contains the General RPC module.
 module GRPC
-  VERSION = '1.8.0.dev'
+  VERSION = '1.7.2'
 end
diff --git a/src/ruby/tools/version.rb b/src/ruby/tools/version.rb
index c584a7c..22fbc5b 100644
--- a/src/ruby/tools/version.rb
+++ b/src/ruby/tools/version.rb
@@ -14,6 +14,6 @@
 
 module GRPC
   module Tools
-    VERSION = '1.8.0.dev'
+    VERSION = '1.7.2'
   end
 end
diff --git a/templates/gRPC-Core.podspec.template b/templates/gRPC-Core.podspec.template
index 3b935e9..04b8940 100644
--- a/templates/gRPC-Core.podspec.template
+++ b/templates/gRPC-Core.podspec.template
@@ -112,6 +112,7 @@
       'USE_HEADERMAP' => 'NO',
       'ALWAYS_SEARCH_USER_PATHS' => 'NO',
       'GCC_PREPROCESSOR_DEFINITIONS' => '"$(inherited)" "COCOAPODS=1" "PB_NO_PACKED_STRUCTS=1"',
+      'CLANG_WARN_STRICT_PROTOTYPES' => 'NO',
     }
 
     s.default_subspecs = 'Interface', 'Implementation'
diff --git a/templates/gRPC-ProtoRPC.podspec.template b/templates/gRPC-ProtoRPC.podspec.template
index 4d99f6e..d2dcc42 100644
--- a/templates/gRPC-ProtoRPC.podspec.template
+++ b/templates/gRPC-ProtoRPC.podspec.template
@@ -54,5 +54,6 @@
       'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1',
       # This is needed by all pods that depend on gRPC-RxLibrary:
       'CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES' => 'YES',
+      'CLANG_WARN_STRICT_PROTOTYPES' => 'NO',
     }
   end
diff --git a/templates/gRPC-RxLibrary.podspec.template b/templates/gRPC-RxLibrary.podspec.template
index de4ee1e..14147d7 100644
--- a/templates/gRPC-RxLibrary.podspec.template
+++ b/templates/gRPC-RxLibrary.podspec.template
@@ -46,4 +46,8 @@
     s.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
     s.private_header_files = "#{src_dir}/private/*.h"
     s.header_mappings_dir = "#{src_dir}"
+
+    s.pod_target_xcconfig = {
+      'CLANG_WARN_STRICT_PROTOTYPES' => 'NO',
+    }
   end
diff --git a/templates/gRPC.podspec.template b/templates/gRPC.podspec.template
index 4b360cf..6616e74 100644
--- a/templates/gRPC.podspec.template
+++ b/templates/gRPC.podspec.template
@@ -52,6 +52,7 @@
     s.pod_target_xcconfig = {
       # This is needed by all pods that depend on gRPC-RxLibrary:
       'CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES' => 'YES',
+      'CLANG_WARN_STRICT_PROTOTYPES' => 'NO',
     }
 
     s.subspec 'Main' do |ss|
diff --git a/test/core/surface/public_headers_must_be_c89.c b/test/core/surface/public_headers_must_be_c89.c
index db9f902..206c4e5 100644
--- a/test/core/surface/public_headers_must_be_c89.c
+++ b/test/core/surface/public_headers_must_be_c89.c
@@ -20,6 +20,7 @@
 #include <grpc/byte_buffer_reader.h>
 #include <grpc/census.h>
 #include <grpc/compression.h>
+#include <grpc/fork.h>
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>
 #include <grpc/grpc_security_constants.h>
@@ -29,6 +30,7 @@
 #include <grpc/impl/codegen/compression_types.h>
 #include <grpc/impl/codegen/connectivity_state.h>
 #include <grpc/impl/codegen/exec_ctx_fwd.h>
+#include <grpc/impl/codegen/fork.h>
 #include <grpc/impl/codegen/gpr_slice.h>
 #include <grpc/impl/codegen/gpr_types.h>
 #include <grpc/impl/codegen/grpc_types.h>
diff --git a/tools/distrib/python/grpcio_tools/grpc_version.py b/tools/distrib/python/grpcio_tools/grpc_version.py
index db92b10..bc1e96a 100644
--- a/tools/distrib/python/grpcio_tools/grpc_version.py
+++ b/tools/distrib/python/grpcio_tools/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/tools/distrib/python/grpcio_tools/grpc_version.py.template`!!!
 
-VERSION='1.8.0.dev0'
+VERSION='1.7.2'
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index eb27eed..064ccb0 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -40,7 +40,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.8.0-dev
+PROJECT_NUMBER         = 1.7.2
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -875,6 +875,7 @@
 include/grpc/byte_buffer.h \
 include/grpc/byte_buffer_reader.h \
 include/grpc/compression.h \
+include/grpc/fork.h \
 include/grpc/grpc.h \
 include/grpc/grpc_posix.h \
 include/grpc/grpc_security_constants.h \
@@ -887,6 +888,7 @@
 include/grpc/impl/codegen/compression_types.h \
 include/grpc/impl/codegen/connectivity_state.h \
 include/grpc/impl/codegen/exec_ctx_fwd.h \
+include/grpc/impl/codegen/fork.h \
 include/grpc/impl/codegen/gpr_slice.h \
 include/grpc/impl/codegen/gpr_types.h \
 include/grpc/impl/codegen/grpc_types.h \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index c9c6439..9ae294c 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -40,7 +40,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.8.0-dev
+PROJECT_NUMBER         = 1.7.2
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -876,6 +876,7 @@
 include/grpc/byte_buffer.h \
 include/grpc/byte_buffer_reader.h \
 include/grpc/compression.h \
+include/grpc/fork.h \
 include/grpc/grpc.h \
 include/grpc/grpc_posix.h \
 include/grpc/grpc_security_constants.h \
@@ -888,6 +889,7 @@
 include/grpc/impl/codegen/compression_types.h \
 include/grpc/impl/codegen/connectivity_state.h \
 include/grpc/impl/codegen/exec_ctx_fwd.h \
+include/grpc/impl/codegen/fork.h \
 include/grpc/impl/codegen/gpr_slice.h \
 include/grpc/impl/codegen/gpr_types.h \
 include/grpc/impl/codegen/grpc_types.h \
@@ -1031,6 +1033,7 @@
 src/core/lib/support/atomic_with_atm.h \
 src/core/lib/support/atomic_with_std.h \
 src/core/lib/support/env.h \
+src/core/lib/support/fork.h \
 src/core/lib/support/manual_constructor.h \
 src/core/lib/support/memory.h \
 src/core/lib/support/mpscq.h \
@@ -1039,6 +1042,7 @@
 src/core/lib/support/stack_lockfree.h \
 src/core/lib/support/string.h \
 src/core/lib/support/string_windows.h \
+src/core/lib/support/thd_internal.h \
 src/core/lib/support/time_precise.h \
 src/core/lib/support/tmpfile.h \
 src/core/lib/support/vector.h \
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index c8fd2ee..fc313ef 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -40,7 +40,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 5.0.0-dev
+PROJECT_NUMBER         = 5.0.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -800,6 +800,7 @@
 include/grpc/byte_buffer_reader.h \
 include/grpc/census.h \
 include/grpc/compression.h \
+include/grpc/fork.h \
 include/grpc/grpc.h \
 include/grpc/grpc_posix.h \
 include/grpc/grpc_security.h \
@@ -817,6 +818,8 @@
 include/grpc/impl/codegen/compression_types.h \
 include/grpc/impl/codegen/connectivity_state.h \
 include/grpc/impl/codegen/exec_ctx_fwd.h \
+include/grpc/impl/codegen/fork.h \
+include/grpc/impl/codegen/fork.h \
 include/grpc/impl/codegen/gpr_slice.h \
 include/grpc/impl/codegen/gpr_slice.h \
 include/grpc/impl/codegen/gpr_types.h \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index b8434bb..126e251 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -40,7 +40,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 5.0.0-dev
+PROJECT_NUMBER         = 5.0.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -800,6 +800,7 @@
 include/grpc/byte_buffer_reader.h \
 include/grpc/census.h \
 include/grpc/compression.h \
+include/grpc/fork.h \
 include/grpc/grpc.h \
 include/grpc/grpc_posix.h \
 include/grpc/grpc_security.h \
@@ -817,6 +818,8 @@
 include/grpc/impl/codegen/compression_types.h \
 include/grpc/impl/codegen/connectivity_state.h \
 include/grpc/impl/codegen/exec_ctx_fwd.h \
+include/grpc/impl/codegen/fork.h \
+include/grpc/impl/codegen/fork.h \
 include/grpc/impl/codegen/gpr_slice.h \
 include/grpc/impl/codegen/gpr_slice.h \
 include/grpc/impl/codegen/gpr_types.h \
@@ -1100,6 +1103,8 @@
 src/core/lib/iomgr/exec_ctx.h \
 src/core/lib/iomgr/executor.cc \
 src/core/lib/iomgr/executor.h \
+src/core/lib/iomgr/fork_posix.cc \
+src/core/lib/iomgr/fork_windows.cc \
 src/core/lib/iomgr/gethostname.h \
 src/core/lib/iomgr/gethostname_fallback.cc \
 src/core/lib/iomgr/gethostname_host_name_max.cc \
@@ -1284,6 +1289,8 @@
 src/core/lib/support/env_linux.cc \
 src/core/lib/support/env_posix.cc \
 src/core/lib/support/env_windows.cc \
+src/core/lib/support/fork.cc \
+src/core/lib/support/fork.h \
 src/core/lib/support/histogram.cc \
 src/core/lib/support/host_port.cc \
 src/core/lib/support/log.cc \
@@ -1312,6 +1319,7 @@
 src/core/lib/support/sync_posix.cc \
 src/core/lib/support/sync_windows.cc \
 src/core/lib/support/thd.cc \
+src/core/lib/support/thd_internal.h \
 src/core/lib/support/thd_posix.cc \
 src/core/lib/support/thd_windows.cc \
 src/core/lib/support/time.cc \
diff --git a/tools/run_tests/artifacts/build_artifact_ruby.sh b/tools/run_tests/artifacts/build_artifact_ruby.sh
index 993aaae..9165a22 100755
--- a/tools/run_tests/artifacts/build_artifact_ruby.sh
+++ b/tools/run_tests/artifacts/build_artifact_ruby.sh
@@ -42,6 +42,7 @@
 
 set -ex
 
+export DOCKERHUB_ORGANIZATION=grpctesting
 rake gem:native
 
 if [ "$SYSTEM" == "Darwin" ] ; then
diff --git a/tools/run_tests/generated/sources_and_headers.json b/tools/run_tests/generated/sources_and_headers.json
index a372c82..ee5dae5 100644
--- a/tools/run_tests/generated/sources_and_headers.json
+++ b/tools/run_tests/generated/sources_and_headers.json
@@ -7746,6 +7746,7 @@
       "src/core/lib/support/env_linux.cc", 
       "src/core/lib/support/env_posix.cc", 
       "src/core/lib/support/env_windows.cc", 
+      "src/core/lib/support/fork.cc", 
       "src/core/lib/support/histogram.cc", 
       "src/core/lib/support/host_port.cc", 
       "src/core/lib/support/log.cc", 
@@ -7819,6 +7820,7 @@
       "src/core/lib/support/atomic_with_atm.h", 
       "src/core/lib/support/atomic_with_std.h", 
       "src/core/lib/support/env.h", 
+      "src/core/lib/support/fork.h", 
       "src/core/lib/support/manual_constructor.h", 
       "src/core/lib/support/memory.h", 
       "src/core/lib/support/mpscq.h", 
@@ -7827,6 +7829,7 @@
       "src/core/lib/support/stack_lockfree.h", 
       "src/core/lib/support/string.h", 
       "src/core/lib/support/string_windows.h", 
+      "src/core/lib/support/thd_internal.h", 
       "src/core/lib/support/time_precise.h", 
       "src/core/lib/support/tmpfile.h"
     ], 
@@ -7867,6 +7870,7 @@
       "src/core/lib/support/atomic_with_atm.h", 
       "src/core/lib/support/atomic_with_std.h", 
       "src/core/lib/support/env.h", 
+      "src/core/lib/support/fork.h", 
       "src/core/lib/support/manual_constructor.h", 
       "src/core/lib/support/memory.h", 
       "src/core/lib/support/mpscq.h", 
@@ -7875,6 +7879,7 @@
       "src/core/lib/support/stack_lockfree.h", 
       "src/core/lib/support/string.h", 
       "src/core/lib/support/string_windows.h", 
+      "src/core/lib/support/thd_internal.h", 
       "src/core/lib/support/time_precise.h", 
       "src/core/lib/support/tmpfile.h"
     ], 
@@ -7888,6 +7893,7 @@
       "include/grpc/impl/codegen/atm_gcc_atomic.h", 
       "include/grpc/impl/codegen/atm_gcc_sync.h", 
       "include/grpc/impl/codegen/atm_windows.h", 
+      "include/grpc/impl/codegen/fork.h", 
       "include/grpc/impl/codegen/gpr_slice.h", 
       "include/grpc/impl/codegen/gpr_types.h", 
       "include/grpc/impl/codegen/port_platform.h", 
@@ -7905,6 +7911,7 @@
       "include/grpc/impl/codegen/atm_gcc_atomic.h", 
       "include/grpc/impl/codegen/atm_gcc_sync.h", 
       "include/grpc/impl/codegen/atm_windows.h", 
+      "include/grpc/impl/codegen/fork.h", 
       "include/grpc/impl/codegen/gpr_slice.h", 
       "include/grpc/impl/codegen/gpr_types.h", 
       "include/grpc/impl/codegen/port_platform.h", 
@@ -7992,6 +7999,8 @@
       "src/core/lib/iomgr/ev_windows.cc", 
       "src/core/lib/iomgr/exec_ctx.cc", 
       "src/core/lib/iomgr/executor.cc", 
+      "src/core/lib/iomgr/fork_posix.cc", 
+      "src/core/lib/iomgr/fork_windows.cc", 
       "src/core/lib/iomgr/gethostname_fallback.cc", 
       "src/core/lib/iomgr/gethostname_host_name_max.cc", 
       "src/core/lib/iomgr/gethostname_sysconf.cc", 
@@ -8104,6 +8113,7 @@
       "include/grpc/byte_buffer.h", 
       "include/grpc/byte_buffer_reader.h", 
       "include/grpc/compression.h", 
+      "include/grpc/fork.h", 
       "include/grpc/grpc.h", 
       "include/grpc/grpc_posix.h", 
       "include/grpc/grpc_security_constants.h", 
@@ -8240,6 +8250,7 @@
       "include/grpc/byte_buffer.h", 
       "include/grpc/byte_buffer_reader.h", 
       "include/grpc/compression.h", 
+      "include/grpc/fork.h", 
       "include/grpc/grpc.h", 
       "include/grpc/grpc_posix.h", 
       "include/grpc/grpc_security_constants.h",