diff --git a/.gitignore b/.gitignore
index 8dc459ea276b108504c8909ffda23319fe5acaa9..18b42811b280f41afda7aaf51de05f0cd219e1c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,7 @@ objs
 python*_virtual_environment
 
 # gcov coverage data
+reports
 coverage
 *.gcno
 
diff --git a/.istanbul.yml b/.istanbul.yml
new file mode 100644
index 0000000000000000000000000000000000000000..9ff1379f5119d74efde9c9b665e1effeb7f9f71d
--- /dev/null
+++ b/.istanbul.yml
@@ -0,0 +1,6 @@
+reporting:
+    watermarks:
+        statements: [80, 95]
+        lines: [80, 95]
+        functions: [80, 95]
+        branches: [80, 95]
diff --git a/BUILD b/BUILD
index c8118089bef63f13bd41b94ccb47fa8002e64b5e..3e2a45b8a0adc19f03b37bf15e1ffdcdbf517476 100644
--- a/BUILD
+++ b/BUILD
@@ -220,6 +220,7 @@ cc_library(
     "src/core/profiling/timers.h",
     "src/core/statistics/census_interface.h",
     "src/core/statistics/census_rpc_stats.h",
+    "src/core/surface/api_trace.h",
     "src/core/surface/byte_buffer_queue.h",
     "src/core/surface/call.h",
     "src/core/surface/channel.h",
@@ -356,6 +357,7 @@ cc_library(
     "src/core/json/json_writer.c",
     "src/core/profiling/basic_timers.c",
     "src/core/profiling/stap_timers.c",
+    "src/core/surface/api_trace.c",
     "src/core/surface/byte_buffer.c",
     "src/core/surface/byte_buffer_queue.c",
     "src/core/surface/byte_buffer_reader.c",
@@ -373,7 +375,6 @@ cc_library(
     "src/core/surface/server.c",
     "src/core/surface/server_chttp2.c",
     "src/core/surface/server_create.c",
-    "src/core/surface/surface_trace.c",
     "src/core/surface/version.c",
     "src/core/transport/chttp2/alpn.c",
     "src/core/transport/chttp2/bin_encoder.c",
@@ -505,6 +506,7 @@ cc_library(
     "src/core/profiling/timers.h",
     "src/core/statistics/census_interface.h",
     "src/core/statistics/census_rpc_stats.h",
+    "src/core/surface/api_trace.h",
     "src/core/surface/byte_buffer_queue.h",
     "src/core/surface/call.h",
     "src/core/surface/channel.h",
@@ -621,6 +623,7 @@ cc_library(
     "src/core/json/json_writer.c",
     "src/core/profiling/basic_timers.c",
     "src/core/profiling/stap_timers.c",
+    "src/core/surface/api_trace.c",
     "src/core/surface/byte_buffer.c",
     "src/core/surface/byte_buffer_queue.c",
     "src/core/surface/byte_buffer_reader.c",
@@ -638,7 +641,6 @@ cc_library(
     "src/core/surface/server.c",
     "src/core/surface/server_chttp2.c",
     "src/core/surface/server_create.c",
-    "src/core/surface/surface_trace.c",
     "src/core/surface/version.c",
     "src/core/transport/chttp2/alpn.c",
     "src/core/transport/chttp2/bin_encoder.c",
@@ -1145,6 +1147,7 @@ objc_library(
     "src/core/json/json_writer.c",
     "src/core/profiling/basic_timers.c",
     "src/core/profiling/stap_timers.c",
+    "src/core/surface/api_trace.c",
     "src/core/surface/byte_buffer.c",
     "src/core/surface/byte_buffer_queue.c",
     "src/core/surface/byte_buffer_reader.c",
@@ -1162,7 +1165,6 @@ objc_library(
     "src/core/surface/server.c",
     "src/core/surface/server_chttp2.c",
     "src/core/surface/server_create.c",
-    "src/core/surface/surface_trace.c",
     "src/core/surface/version.c",
     "src/core/transport/chttp2/alpn.c",
     "src/core/transport/chttp2/bin_encoder.c",
@@ -1291,6 +1293,7 @@ objc_library(
     "src/core/profiling/timers.h",
     "src/core/statistics/census_interface.h",
     "src/core/statistics/census_rpc_stats.h",
+    "src/core/surface/api_trace.h",
     "src/core/surface/byte_buffer_queue.h",
     "src/core/surface/call.h",
     "src/core/surface/channel.h",
diff --git a/Makefile b/Makefile
index e0a7b804721dd3916d0eef71e71b10630afd670a..8eb94f768a2ba16272f5f86b75bdf8369631f145 100644
--- a/Makefile
+++ b/Makefile
@@ -4119,6 +4119,7 @@ LIBGRPC_SRC = \
     src/core/json/json_writer.c \
     src/core/profiling/basic_timers.c \
     src/core/profiling/stap_timers.c \
+    src/core/surface/api_trace.c \
     src/core/surface/byte_buffer.c \
     src/core/surface/byte_buffer_queue.c \
     src/core/surface/byte_buffer_reader.c \
@@ -4136,7 +4137,6 @@ LIBGRPC_SRC = \
     src/core/surface/server.c \
     src/core/surface/server_chttp2.c \
     src/core/surface/server_create.c \
-    src/core/surface/surface_trace.c \
     src/core/surface/version.c \
     src/core/transport/chttp2/alpn.c \
     src/core/transport/chttp2/bin_encoder.c \
@@ -4401,6 +4401,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/json/json_writer.c \
     src/core/profiling/basic_timers.c \
     src/core/profiling/stap_timers.c \
+    src/core/surface/api_trace.c \
     src/core/surface/byte_buffer.c \
     src/core/surface/byte_buffer_queue.c \
     src/core/surface/byte_buffer_reader.c \
@@ -4418,7 +4419,6 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/surface/server.c \
     src/core/surface/server_chttp2.c \
     src/core/surface/server_create.c \
-    src/core/surface/surface_trace.c \
     src/core/surface/version.c \
     src/core/transport/chttp2/alpn.c \
     src/core/transport/chttp2/bin_encoder.c \
diff --git a/README.md b/README.md
index ab1004f9d5ac0b53340715bf48279cb2f973bae7..2ef6c3d7f6ebda96543d8e0089c7f3f14b879c6f 100644
--- a/README.md
+++ b/README.md
@@ -26,31 +26,31 @@ of shared C core library [src/core] (src/core).
    * PHP source code: [src/php] (src/php)
    * C# source code: [src/csharp] (src/csharp)
    * Objective-C source code: [src/objective-c] (src/objective-c)
-   
-Java source code is in [grpc-java] (http://github.com/grpc/grpc-java) repository. 
+
+Java source code is in [grpc-java] (http://github.com/grpc/grpc-java) repository.
 Go source code is in [grpc-go] (http://github.com/grpc/grpc-go) repository.
 
 #Current Status of libraries
 
 Libraries in different languages are in different state of development. We are seeking contributions for all of these libraries.
 
-   * shared C core library [src/core] (src/core) : Early adopter ready - Alpha.
-   * C++ Library: [src/cpp] (src/cpp) : Early adopter ready - Alpha.
-   * Ruby Library: [src/ruby] (src/ruby) : Early adopter ready - Alpha.
-   * NodeJS Library: [src/node] (src/node) : Early adopter ready - Alpha.
-   * Python Library: [src/python] (src/python) : Early adopter ready - Alpha.
-   * C# Library: [src/csharp] (src/csharp) : Early adopter ready - Alpha.
-   * Objective-C Library: [src/objective-c] (src/objective-c): Early adopter ready - Alpha.
-   * PHP Library: [src/php] (src/php) : Pre-Alpha.
+   * shared C core library [src/core] (src/core) : Beta - the surface API is stable
+   * C++ Library: [src/cpp] (src/cpp) : Beta - the surface API is stable
+   * Ruby Library: [src/ruby] (src/ruby) : Beta - the surface API is stable
+   * NodeJS Library: [src/node] (src/node) : Beta - the surface API is stable
+   * Python Library: [src/python] (src/python) : Beta - the surface API is stable
+   * C# Library: [src/csharp] (src/csharp) : Beta - the surface API is stable
+   * Objective-C Library: [src/objective-c] (src/objective-c): Beta - the surface API is stable
+   * PHP Library: [src/php] (src/php) : Beta - the surface API is stable
 
 #Overview
 
 
-Remote Procedure Calls (RPCs) provide a useful abstraction for building 
+Remote Procedure Calls (RPCs) provide a useful abstraction for building
 distributed applications and services. The libraries in this repository
 provide a concrete implementation of the gRPC protocol, layered over HTTP/2.
 These libraries enable communication between clients and servers using any
-combination of the supported languages. 
+combination of the supported languages.
 
 
 ##Interface
@@ -62,12 +62,12 @@ which they use on the client-side and implement on the server side.
 
 By default, gRPC uses [Protocol Buffers](https://github.com/google/protobuf) as the
 Interface Definition Language (IDL) for describing both the service interface
-and the structure of the payload messages. It is possible to use other 
+and the structure of the payload messages. It is possible to use other
 alternatives if desired.
 
 ###Surface API
 Starting from an interface definition in a .proto file, gRPC provides
-Protocol Compiler plugins that generate Client- and Server-side APIs. 
+Protocol Compiler plugins that generate Client- and Server-side APIs.
 gRPC users typically call into these APIs on the Client side and implement
 the corresponding API on the server side.
 
@@ -76,9 +76,9 @@ Synchronous RPC calls, that block until a response arrives from the server, are
 the closest approximation to the abstraction of a procedure call that RPC
 aspires to.
 
-On the other hand, networks are inherently asynchronous and in many scenarios,  
+On the other hand, networks are inherently asynchronous and in many scenarios,
 it is desirable to have the ability to start RPCs without blocking the current
-thread. 
+thread.
 
 The gRPC programming surface in most languages comes in both synchronous and
 asynchronous flavors.
@@ -87,8 +87,8 @@ asynchronous flavors.
 ## Streaming
 
 gRPC supports streaming semantics, where either the client or the server (or both)
-send a stream of messages on a single RPC call. The most general case is 
-Bidirectional Streaming where a single gRPC call establishes a stream where both 
+send a stream of messages on a single RPC call. The most general case is
+Bidirectional Streaming where a single gRPC call establishes a stream where both
 the client and the server can send a stream of messages to each other. The streamed
 messages are delivered in the order they were sent.
 
@@ -103,7 +103,7 @@ fleshing out the details of each of the required operations.
 A gRPC RPC comprises of a bidirectional stream of messages, initiated by the client. In the client-to-server direction, this stream begins with a mandatory `Call Header`, followed by optional `Initial-Metadata`, followed by zero or more `Payload Messages`. The server-to-client direction contains an optional `Initial-Metadata`, followed by zero or more `Payload Messages` terminated with a mandatory `Status` and optional `Status-Metadata` (a.k.a.,`Trailing-Metadata`).
 
 ## Implementation over HTTP/2
-The abstract protocol defined above is implemented over [HTTP/2](https://http2.github.io/). gRPC bidirectional streams are mapped to HTTP/2 streams. The contents of `Call Header` and `Initial Metadata` are sent as HTTP/2 headers and subject to HPACK compression. `Payload Messages` are serialized into a byte stream of length prefixed gRPC frames which are then fragmented into HTTP/2 frames at the sender and reassembled at the receiver. `Status` and `Trailing-Metadata` are sent as HTTP/2 trailing headers (a.k.a., trailers).     
+The abstract protocol defined above is implemented over [HTTP/2](https://http2.github.io/). gRPC bidirectional streams are mapped to HTTP/2 streams. The contents of `Call Header` and `Initial Metadata` are sent as HTTP/2 headers and subject to HPACK compression. `Payload Messages` are serialized into a byte stream of length prefixed gRPC frames which are then fragmented into HTTP/2 frames at the sender and reassembled at the receiver. `Status` and `Trailing-Metadata` are sent as HTTP/2 trailing headers (a.k.a., trailers).
 
 ## Flow Control
 gRPC inherits the flow control mechanisms in HTTP/2 and uses them to enable fine-grained control of the amount of memory used for buffering in-flight messages.
diff --git a/binding.gyp b/binding.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..2a5cb1ced496d63722dd730c486c9e7919c9108f
--- /dev/null
+++ b/binding.gyp
@@ -0,0 +1,95 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+{
+  "variables" : {
+    'config': '<!(echo $CONFIG)'
+  },
+  "targets" : [
+    {
+      'include_dirs': [
+        "<!(node -e \"require('nan')\")"
+      ],
+      'cflags': [
+        '-std=c++0x',
+        '-Wall',
+        '-pthread',
+        '-g',
+        '-zdefs',
+        '-Werror',
+        '-Wno-error=deprecated-declarations'
+      ],
+      'ldflags': [
+        '-g'
+      ],
+      "conditions": [
+        ['OS != "win"', {
+          'conditions': [
+            ['config=="gcov"', {
+              'cflags': [
+                '-ftest-coverage',
+                '-fprofile-arcs',
+                '-O0'
+              ],
+              'ldflags': [
+                '-ftest-coverage',
+                '-fprofile-arcs'
+              ]
+            }
+           ]
+          ]
+        }],
+        ['OS == "mac"', {
+          'xcode_settings': {
+            'MACOSX_DEPLOYMENT_TARGET': '10.9',
+            'OTHER_CFLAGS': [
+              '-std=c++11',
+              '-stdlib=libc++'
+            ]
+          }
+        }]
+      ],
+      "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_async_worker.cc",
+        "src/node/ext/node_grpc.cc",
+        "src/node/ext/server.cc",
+        "src/node/ext/server_credentials.cc",
+        "src/node/ext/timeval.cc"
+      ],
+      "dependencies": [
+        "grpc.gyp:grpc"
+      ]
+    }
+  ]
+}
diff --git a/build.yaml b/build.yaml
index 32dfa34df6ee74bd34b6a0f7767795a8647a82cf..98fb0348ca3bc32e78bda06193350b9fa9ff1795 100644
--- a/build.yaml
+++ b/build.yaml
@@ -180,6 +180,7 @@ filegroups:
   - src/core/profiling/timers.h
   - src/core/statistics/census_interface.h
   - src/core/statistics/census_rpc_stats.h
+  - src/core/surface/api_trace.h
   - src/core/surface/byte_buffer_queue.h
   - src/core/surface/call.h
   - src/core/surface/channel.h
@@ -293,6 +294,7 @@ filegroups:
   - src/core/json/json_writer.c
   - src/core/profiling/basic_timers.c
   - src/core/profiling/stap_timers.c
+  - src/core/surface/api_trace.c
   - src/core/surface/byte_buffer.c
   - src/core/surface/byte_buffer_queue.c
   - src/core/surface/byte_buffer_reader.c
@@ -310,7 +312,6 @@ filegroups:
   - src/core/surface/server.c
   - src/core/surface/server_chttp2.c
   - src/core/surface/server_create.c
-  - src/core/surface/surface_trace.c
   - src/core/surface/version.c
   - src/core/transport/chttp2/alpn.c
   - src/core/transport/chttp2/bin_encoder.c
diff --git a/examples/csharp/helloworld/.nuget/packages.config b/examples/csharp/helloworld/.nuget/packages.config
index e2879c1893264decb2d0f48eec5487abd0374c91..1c1f118d4660f1d54426cf6e60341237fe621fdc 100644
--- a/examples/csharp/helloworld/.nuget/packages.config
+++ b/examples/csharp/helloworld/.nuget/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Grpc.Tools" version="0.7.0" />
+  <package id="Grpc.Tools" version="0.7.1" />
 </packages>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/Greeter/Greeter.csproj b/examples/csharp/helloworld/Greeter/Greeter.csproj
index 3d92c4bf25a6cac2680fb38c47a53856c7cba805..2ae8620267f8ab72e6110e91d3489bd28d5be313 100644
--- a/examples/csharp/helloworld/Greeter/Greeter.csproj
+++ b/examples/csharp/helloworld/Greeter/Greeter.csproj
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" />
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props')" />
   <PropertyGroup>
@@ -13,7 +13,7 @@
     <RootNamespace>Greeter</RootNamespace>
     <AssemblyName>Greeter</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
-    <NuGetPackageImportStamp>3ef64a6a</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>e423e365</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -37,9 +37,9 @@
     <Reference Include="Google.Protobuf">
       <HintPath>..\packages\Google.Protobuf.3.0.0-alpha4\lib\portable-net45+netcore45+wpa81+wp8\Google.Protobuf.dll</HintPath>
     </Reference>
-    <Reference Include="Grpc.Core, Version=0.7.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+    <Reference Include="Grpc.Core, Version=0.7.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.0.7.0\lib\net45\Grpc.Core.dll</HintPath>
+      <HintPath>..\packages\Grpc.Core.0.7.1\lib\net45\Grpc.Core.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Interactive.Async">
@@ -65,10 +65,10 @@
     <Error Condition="!Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets'))" />
   </Target>
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" />
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" />
 </Project>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/Greeter/packages.config b/examples/csharp/helloworld/Greeter/packages.config
index 1273624cbd0ae9e4e5ecd8f722872c1628fd7d92..c0f73879160e59dfa4f6d5039908615a71e9d883 100644
--- a/examples/csharp/helloworld/Greeter/packages.config
+++ b/examples/csharp/helloworld/Greeter/packages.config
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.Protobuf" version="3.0.0-alpha4" targetFramework="net45" />
-  <package id="Grpc" version="0.7.0" targetFramework="net45" />
-  <package id="Grpc.Core" version="0.7.0" targetFramework="net45" />
+  <package id="Grpc" version="0.7.1" targetFramework="net45" />
+  <package id="Grpc.Core" version="0.7.1" targetFramework="net45" />
   <package id="grpc.dependencies.openssl.redist" version="1.0.2.3" targetFramework="net45" />
   <package id="grpc.dependencies.zlib.redist" version="1.2.8.9" targetFramework="net45" />
-  <package id="grpc.native.csharp_ext" version="0.11.0" targetFramework="net45" />
+  <package id="grpc.native.csharp_ext" version="0.11.1" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/GreeterClient/GreeterClient.csproj b/examples/csharp/helloworld/GreeterClient/GreeterClient.csproj
index 7874172bf261ee618641ec5bbb2a159d0dfd76c5..af330f2b90527b5f007692cedee91dae1242ce3d 100644
--- a/examples/csharp/helloworld/GreeterClient/GreeterClient.csproj
+++ b/examples/csharp/helloworld/GreeterClient/GreeterClient.csproj
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" />
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props')" />
   <PropertyGroup>
@@ -13,7 +13,7 @@
     <RootNamespace>GreeterClient</RootNamespace>
     <AssemblyName>GreeterClient</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
-    <NuGetPackageImportStamp>c4057b0a</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>2dcf22af</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -37,9 +37,9 @@
     <Reference Include="Google.Protobuf">
       <HintPath>..\packages\Google.Protobuf.3.0.0-alpha4\lib\portable-net45+netcore45+wpa81+wp8\Google.Protobuf.dll</HintPath>
     </Reference>
-    <Reference Include="Grpc.Core, Version=0.7.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+    <Reference Include="Grpc.Core, Version=0.7.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.0.7.0\lib\net45\Grpc.Core.dll</HintPath>
+      <HintPath>..\packages\Grpc.Core.0.7.1\lib\net45\Grpc.Core.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Interactive.Async">
@@ -68,10 +68,10 @@
     <Error Condition="!Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets'))" />
   </Target>
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" />
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" />
 </Project>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/GreeterClient/packages.config b/examples/csharp/helloworld/GreeterClient/packages.config
index 1273624cbd0ae9e4e5ecd8f722872c1628fd7d92..c0f73879160e59dfa4f6d5039908615a71e9d883 100644
--- a/examples/csharp/helloworld/GreeterClient/packages.config
+++ b/examples/csharp/helloworld/GreeterClient/packages.config
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.Protobuf" version="3.0.0-alpha4" targetFramework="net45" />
-  <package id="Grpc" version="0.7.0" targetFramework="net45" />
-  <package id="Grpc.Core" version="0.7.0" targetFramework="net45" />
+  <package id="Grpc" version="0.7.1" targetFramework="net45" />
+  <package id="Grpc.Core" version="0.7.1" targetFramework="net45" />
   <package id="grpc.dependencies.openssl.redist" version="1.0.2.3" targetFramework="net45" />
   <package id="grpc.dependencies.zlib.redist" version="1.2.8.9" targetFramework="net45" />
-  <package id="grpc.native.csharp_ext" version="0.11.0" targetFramework="net45" />
+  <package id="grpc.native.csharp_ext" version="0.11.1" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/GreeterServer/GreeterServer.csproj b/examples/csharp/helloworld/GreeterServer/GreeterServer.csproj
index d1db2f4773be547dc513671df9663ada436d0db3..752f32828b02a0f3d6b1a069f10a7b6d05c78131 100644
--- a/examples/csharp/helloworld/GreeterServer/GreeterServer.csproj
+++ b/examples/csharp/helloworld/GreeterServer/GreeterServer.csproj
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" />
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props')" />
   <PropertyGroup>
@@ -13,7 +13,7 @@
     <RootNamespace>GreeterServer</RootNamespace>
     <AssemblyName>GreeterServer</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
-    <NuGetPackageImportStamp>cc15afe5</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>53a3a588</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -37,9 +37,9 @@
     <Reference Include="Google.Protobuf">
       <HintPath>..\packages\Google.Protobuf.3.0.0-alpha4\lib\portable-net45+netcore45+wpa81+wp8\Google.Protobuf.dll</HintPath>
     </Reference>
-    <Reference Include="Grpc.Core, Version=0.7.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+    <Reference Include="Grpc.Core, Version=0.7.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.0.7.0\lib\net45\Grpc.Core.dll</HintPath>
+      <HintPath>..\packages\Grpc.Core.0.7.1\lib\net45\Grpc.Core.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Interactive.Async">
@@ -68,10 +68,10 @@
     <Error Condition="!Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets'))" />
   </Target>
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" />
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" />
 </Project>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/GreeterServer/packages.config b/examples/csharp/helloworld/GreeterServer/packages.config
index 1273624cbd0ae9e4e5ecd8f722872c1628fd7d92..c0f73879160e59dfa4f6d5039908615a71e9d883 100644
--- a/examples/csharp/helloworld/GreeterServer/packages.config
+++ b/examples/csharp/helloworld/GreeterServer/packages.config
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.Protobuf" version="3.0.0-alpha4" targetFramework="net45" />
-  <package id="Grpc" version="0.7.0" targetFramework="net45" />
-  <package id="Grpc.Core" version="0.7.0" targetFramework="net45" />
+  <package id="Grpc" version="0.7.1" targetFramework="net45" />
+  <package id="Grpc.Core" version="0.7.1" targetFramework="net45" />
   <package id="grpc.dependencies.openssl.redist" version="1.0.2.3" targetFramework="net45" />
   <package id="grpc.dependencies.zlib.redist" version="1.2.8.9" targetFramework="net45" />
-  <package id="grpc.native.csharp_ext" version="0.11.0" targetFramework="net45" />
+  <package id="grpc.native.csharp_ext" version="0.11.1" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/examples/csharp/helloworld/README.md b/examples/csharp/helloworld/README.md
index 3719080f4ae50904b79f545addafe9aec50d7277..f1af1f6793c0585ddf1e5c533f52fe0f75c19c7a 100644
--- a/examples/csharp/helloworld/README.md
+++ b/examples/csharp/helloworld/README.md
@@ -3,49 +3,52 @@ gRPC in 3 minutes (C#)
 
 BACKGROUND
 -------------
-For this sample, we've already generated the server and client stubs from `helloworld.proto`. 
-Example projects depend on NuGet packages `Grpc` and `Google.ProtocolBuffers` which have been already added to the project for you.
+For this sample, we've already generated the server and client stubs from [helloworld.proto][].
+
+Example projects depend on the [Grpc](https://www.nuget.org/packages/Grpc/)
+and [Google.Protobuf](https://www.nuget.org/packages/Google.Protobuf/) NuGet packages
+which have been already added to the project for you.
 
 PREREQUISITES
 -------------
 **Windows**
 - .NET 4.5+
-- VS 2013 (with NuGet plugin installed)
+- Visual Studio 2013 or 2015
 
-**Linux (Mono)**
+**Linux**
 - Mono
-- Monodevelop 5.9 with NuGet Add-in installed (older versions might work)
+- Monodevelop 5.9 with NuGet Add-in installed
 
-**MacOS (Mono)**
+**Mac OS X**
 - Xamarin Studio (with NuGet plugin installed)
+- [homebrew][]
 
 BUILD
 -------
 
 **Windows**
-- Clone this repository.
 
 - Open solution `Greeter.sln` with Visual Studio
 
 - Build the solution (this will automatically download NuGet dependencies)
 
-**Linux (Mono)**
-- Clone this repository.
+**Linux (Debian)**
+
+- Install gRPC C core and C# native extension using [How to use gRPC C#][] instructions
 
-- Install gRPC C Core using instructions in https://github.com/grpc/homebrew-grpc
+- Open solution `Greeter.sln` in MonoDevelop.
 
-- gRPC C# depends on native shared library `libgrpc_csharp_ext.so`. To make it visible
-  to Mono runtime, follow instructions in [Using gRPC C# on Linux](https://github.com/grpc/grpc/tree/master/src/csharp#usage-linux-mono)
+- Build the solution (you need to manually restore dependencies by using `mono nuget.exe restore` if you don't have NuGet add-in)
 
-- Open solution `Greeter.sln` in MonoDevelop (you need to manually restore dependencies by using `mono nuget.exe restore` if you don't have NuGet add-in)
+**Mac OS X**
 
-- Build the solution.
+- Install gRPC C core and C# native extension using [How to use gRPC C#][] instructions
 
-**MacOS (Mono)**
-- See [Using gRPC C# on MacOS](https://github.com/grpc/grpc/tree/master/src/csharp#usage-macos-mono) for more info
-  on MacOS support.
+- Open solution `Greeter.sln` with Xamarin Studio
 
-Try it! 
+- Build the solution (this will automatically download NuGet dependencies)
+
+Try it!
 -------
 
 - Run the server
@@ -69,4 +72,9 @@ On Linux or Mac, use `mono GreeterServer.exe` and `mono GreeterClient.exe` to ru
 Tutorial
 --------
 
-You can find a more detailed tutorial in [gRPC Basics: C#](route_guide/README.md)
+You can find a more detailed tutorial in [gRPC Basics: C#][]
+
+[homebrew]:http://brew.sh
+[helloworld.proto]:../../protos/helloworld.proto
+[How to use gRPC C#]:../../../src/csharp#how-to-use
+[gRPC Basics: C#]:http://www.grpc.io/docs/tutorials/basic/csharp.html
diff --git a/examples/csharp/route_guide/.nuget/packages.config b/examples/csharp/route_guide/.nuget/packages.config
index e2879c1893264decb2d0f48eec5487abd0374c91..1c1f118d4660f1d54426cf6e60341237fe621fdc 100644
--- a/examples/csharp/route_guide/.nuget/packages.config
+++ b/examples/csharp/route_guide/.nuget/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Grpc.Tools" version="0.7.0" />
+  <package id="Grpc.Tools" version="0.7.1" />
 </packages>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/README.md b/examples/csharp/route_guide/README.md
index 155877e62e20a8def57f79460b354961f75c2dbd..a9aa87a83dff4669cf32cd8c19e9ba8fc5160d7b 100644
--- a/examples/csharp/route_guide/README.md
+++ b/examples/csharp/route_guide/README.md
@@ -1,386 +1,6 @@
-#gRPC Basics: C# #
+#gRPC Basics: C# sample code
 
-This tutorial provides a basic C# programmer's introduction to working with gRPC. By walking through this example you'll learn how to:
+The files in this folder are the samples used in [gRPC Basics: C#][],
+a detailed tutorial for using gRPC in C#.
 
-- Define a service in a .proto file.
-- Generate server and client code using the protocol buffer compiler.
-- Use the C# gRPC API to write a simple client and server for your service.
-
-It assumes that you have read the [Getting started](https://github.com/grpc/grpc/tree/master/examples) guide and are familiar with [protocol buffers] (https://developers.google.com/protocol-buffers/docs/overview). Note that the example in this tutorial only uses the proto2 version of the protocol buffers language, as proto3 support for C# is not ready yet (see [protobuf C# README](https://github.com/google/protobuf/tree/master/csharp#proto2--proto3)).
-
-This isn't a comprehensive guide to using gRPC in C#: more reference documentation is coming soon.
-
-## Why use gRPC?
-
-Our example is a simple route mapping application that lets clients get information about features on their route, create a summary of their route, and exchange route information such as traffic updates with the server and other clients.
-
-With gRPC we can define our service once in a .proto file and implement clients and servers in any of gRPC's supported languages, which in turn can be run in environments ranging from servers inside Google to your own tablet - all the complexity of communication between different languages and environments is handled for you by gRPC. We also get all the advantages of working with protocol buffers, including efficient serialization, a simple IDL, and easy interface updating.
-
-## Example code and setup
-
-The example code for our tutorial is in [examples/csharp/route_guide](.). To download the example, clone this repository by running the following command:
-```shell
-$ git clone https://github.com/grpc/grpc.git
-```
-
-All the files for this tutorial are in the directory  `examples/csharp/route_guide`.
-Open the solution `examples/csharp/route_guide/RouteGuide.sln` from Visual Studio (or Monodevelop on Linux).
-
-On Windows, you should not need to do anything besides opening the solution. All the needed dependencies will be restored
-for you automatically by the `Grpc` NuGet package upon building the solution.
-
-On Linux (or MacOS), you will first need to install protobuf and gRPC C Core using Linuxbrew (or Homebrew) tool in order to be 
-able to generate the server and client interface code and run the examples. Follow the instructions for [Linux](https://github.com/grpc/grpc/tree/master/src/csharp#usage-linux-mono) or [MacOS](https://github.com/grpc/grpc/tree/master/src/csharp#usage-macos-mono).
-
-## Defining the service
-
-Our first step (as you'll know from [Getting started](https://github.com/grpc/grpc/tree/master/examples)) is to define the gRPC *service* and the method *request* and *response* types using [protocol buffers] (https://developers.google.com/protocol-buffers/docs/overview). You can see the complete .proto file in [`RouteGuide/protos/route_guide.proto`](RouteGuide/protos/route_guide.proto).
-
-To define a service, you specify a named `service` in your .proto file:
-
-```protobuf
-service RouteGuide {
-   ...
-}
-```
-
-Then you define `rpc` methods inside your service definition, specifying their request and response types. gRPC lets you define four kinds of service method, all of which are used in the `RouteGuide` service:
-
-- A *simple RPC* where the client sends a request to the server using the stub and waits for a response to come back, just like a normal function call.
-```protobuf
-   // Obtains the feature at a given position.
-   rpc GetFeature(Point) returns (Feature) {}
-```
-
-- A *server-side streaming RPC* where the client sends a request to the server and gets a stream to read a sequence of messages back. The client reads from the returned stream until there are no more messages. As you can see in our example, you specify a server-side streaming method by placing the `stream` keyword before the *response* type.
-```protobuf
-  // Obtains the Features available within the given Rectangle.  Results are
-  // streamed rather than returned at once (e.g. in a response message with a
-  // repeated field), as the rectangle may cover a large area and contain a
-  // huge number of features.
-  rpc ListFeatures(Rectangle) returns (stream Feature) {}
-```
-
-- A *client-side streaming RPC* where the client writes a sequence of messages and sends them to the server, again using a provided stream. Once the client has finished writing the messages, it waits for the server to read them all and return its response. You specify a server-side streaming method by placing the `stream` keyword before the *request* type.
-```protobuf
-  // Accepts a stream of Points on a route being traversed, returning a
-  // RouteSummary when traversal is completed.
-  rpc RecordRoute(stream Point) returns (RouteSummary) {}
-```
-
-- A *bidirectional streaming RPC* where both sides send a sequence of messages using a read-write stream. The two streams operate independently, so clients and servers can read and write in whatever order they like: for example, the server could wait to receive all the client messages before writing its responses, or it could alternately read a message then write a message, or some other combination of reads and writes. The order of messages in each stream is preserved. You specify this type of method by placing the `stream` keyword before both the request and the response.
-```protobuf
-  // Accepts a stream of RouteNotes sent while a route is being traversed,
-  // while receiving other RouteNotes (e.g. from other users).
-  rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
-```
-
-Our .proto file also contains protocol buffer message type definitions for all the request and response types used in our service methods - for example, here's the `Point` message type:
-```protobuf
-// Points are represented as latitude-longitude pairs in the E7 representation
-// (degrees multiplied by 10**7 and rounded to the nearest integer).
-// Latitudes should be in the range +/- 90 degrees and longitude should be in
-// the range +/- 180 degrees (inclusive).
-message Point {
-  int32 latitude = 1;
-  int32 longitude = 2;
-}
-```
-
-
-## Generating client and server code
-
-Next we need to generate the gRPC client and server interfaces from our .proto service definition. We do this using the protocol buffer compiler `protoc` with a special gRPC C# plugin.
-
-If you want to run this yourself, make sure you've installed protoc and gRPC C# plugin. The instructions vary based on your OS:
-- For Windows, the `Grpc.Tools` and `Google.Protobuf` NuGet packages contain the binaries you will need to generate the code.
-- For Linux, make sure you've [installed gRPC C Core using Linuxbrew](https://github.com/grpc/grpc/tree/master/src/csharp#usage-linux-mono)
-- For MacOS, make sure you've [installed gRPC C Core using Homebrew](https://github.com/grpc/grpc/tree/master/src/csharp#usage-macos-mono)
-
-Once that's done, the following command can be used to generate the C# code.
-
-To generate the code on Windows, we use `protoc.exe` from the `Google.Protobuf` NuGet package and `grpc_csharp_plugin.exe` from the `Grpc.Tools` NuGet package (both under the `tools` directory).
-Normally you would need to add the `Grpc.Tools` package to the solution yourself, but in this tutorial it has been already done for you. Following command should be run from the `csharp/route_guide` directory:
-```
-> packages\Google.Protobuf.3.0.0-alpha4\tools\protoc -I RouteGuide/protos --csharp_out=RouteGuide --grpc_out=RouteGuide --plugin=protoc-gen-grpc=packages\Grpc.Tools.0.7.0\tools\grpc_csharp_plugin.exe RouteGuide/protos/route_guide.proto
-```
-
-On Linux/MacOS, we rely on `protoc` and `grpc_csharp_plugin` being installed by Linuxbrew/Homebrew. Run this command from the route_guide directory:
-```shell
-$ protoc -I RouteGuide/protos --csharp_out=RouteGuide --grpc_out=RouteGuide --plugin=protoc-gen-grpc=`which grpc_csharp_plugin` RouteGuide/protos/route_guide.proto
-```
-
-Running one of the previous commands regenerates the following files in the RouteGuide directory:
-- `RouteGuide/RouteGuide.cs` defines a namespace `examples`
-  - This contains all the protocol buffer code to populate, serialize, and retrieve our request and response message types
-- `RouteGuide/RouteGuideGrpc.cs`, provides stub and service classes
-   - an interface `RouteGuide.IRouteGuide` to inherit from when defining RouteGuide service implementations
-   - a class `RouteGuide.RouteGuideClient` that can be used to access remote RouteGuide instances
-
-
-<a name="server"></a>
-## Creating the server
-
-First let's look at how we create a `RouteGuide` server. If you're only interested in creating gRPC clients, you can skip this section and go straight to [Creating the client](#client) (though you might find it interesting anyway!).
-
-There are two parts to making our `RouteGuide` service do its job:
-- Implementing the service interface generated from our service definition: doing the actual "work" of our service.
-- Running a gRPC server to listen for requests from clients and return the service responses.
-
-You can find our example `RouteGuide` server in [RouteGuideServer/RouteGuideImpl.cs](RouteGuideServer/RouteGuideServerImpl.cs). Let's take a closer look at how it works.
-
-### Implementing RouteGuide
-
-As you can see, our server has a `RouteGuideImpl` class that implements the generated `RouteGuide.IRouteGuide`:
-
-```csharp
-// RouteGuideImpl provides an implementation of the RouteGuide service.
-public class RouteGuideImpl : RouteGuide.IRouteGuide
-```
-
-#### Simple RPC
-
-`RouteGuideImpl` implements all our service methods. Let's look at the simplest type first, `GetFeature`, which just gets a `Point` from the client and returns the corresponding feature information from its database in a `Feature`.
-
-```csharp
-    public Task<Feature> GetFeature(Point request, Grpc.Core.ServerCallContext context)
-    {
-        return Task.FromResult(CheckFeature(request));
-    }
-```
-
-The method is passed a context for the RPC (which is empty in the alpha release), the client's `Point` protocol buffer request, and returns a `Feature` protocol buffer. In the method we create the `Feature` with the appropriate information, and then return it. To allow asynchronous
-implementation, the method returns `Task<Feature>` rather than just `Feature`. You are free to perform your computations synchronously and return
-the result once you've finished, just as we do in the example.
-
-#### Server-side streaming RPC
-
-Now let's look at something a bit more complicated - a streaming RPC. `ListFeatures` is a server-side streaming RPC, so we need to send back multiple `Feature` protocol buffers to our client.
-
-```csharp
-    // in RouteGuideImpl
-    public async Task ListFeatures(Rectangle request,
-        Grpc.Core.IServerStreamWriter<Feature> responseStream,
-        Grpc.Core.ServerCallContext context)
-    {
-        var responses = features.FindAll( (feature) => feature.Exists() && request.Contains(feature.Location) );
-        foreach (var response in responses)
-        {
-            await responseStream.WriteAsync(response);
-        }
-    }
-```
-
-As you can see, here the request object is a `Rectangle` in which our client wants to find `Feature`s, but instead of returning a simple response we need to write responses to an asynchronous stream `IServerStreamWriter` using async method `WriteAsync`.
-
-#### Client-side streaming RPC
-
-Similarly, the client-side streaming method `RecordRoute` uses an [IAsyncEnumerator](https://github.com/Reactive-Extensions/Rx.NET/blob/master/Ix.NET/Source/System.Interactive.Async/IAsyncEnumerator.cs), to read the stream of requests using the async method `MoveNext` and the `Current` property.
-
-```csharp
-    public async Task<RouteSummary> RecordRoute(Grpc.Core.IAsyncStreamReader<Point> requestStream,
-        Grpc.Core.ServerCallContext context)
-    {
-        int pointCount = 0;
-        int featureCount = 0;
-        int distance = 0;
-        Point previous = null;
-        var stopwatch = new Stopwatch();
-        stopwatch.Start();
-
-        while (await requestStream.MoveNext())
-        {
-            var point = requestStream.Current;
-            pointCount++;
-            if (CheckFeature(point).Exists())
-            {
-                featureCount++;
-            }
-            if (previous != null)
-            {
-                distance += (int) previous.GetDistance(point);
-            }
-            previous = point;
-        }
-
-        stopwatch.Stop();
-        
-        return new RouteSummary
-        {
-            PointCount = pointCount,
-            FeatureCount = featureCount,
-            Distance = distance,
-            ElapsedTime = (int)(stopwatch.ElapsedMilliseconds / 1000)
-        };
-    }
-```
-
-#### Bidirectional streaming RPC
-
-Finally, let's look at our bidirectional streaming RPC `RouteChat`.
-
-```csharp
-    public async Task RouteChat(Grpc.Core.IAsyncStreamReader<RouteNote> requestStream,
-        Grpc.Core.IServerStreamWriter<RouteNote> responseStream,
-        Grpc.Core.ServerCallContext context,)
-    {
-        while (await requestStream.MoveNext())
-        {        
-            var note = requestStream.Current;
-            List<RouteNote> prevNotes = AddNoteForLocation(note.Location, note);
-            foreach (var prevNote in prevNotes)
-            {
-                await responseStream.WriteAsync(prevNote);
-            }
-        }
-    }
-```
-
-Here the method receives both `requestStream` and `responseStream` arguments.  Reading the requests is done the same way as in the client-side streaming method `RecordRoute`.  Writing the responses is done the same way as in the server-side streaming method `ListFeatures`.
-
-### Starting the server
-
-Once we've implemented all our methods, we also need to start up a gRPC server so that clients can actually use our service. The following snippet shows how we do this for our `RouteGuide` service:
-
-```csharp
-var features = RouteGuideUtil.ParseFeatures(RouteGuideUtil.DefaultFeaturesFile);
-
-Server server = new Server
-{
-    Services = { RouteGuide.BindService(new RouteGuideImpl(features)) },
-    Ports = { new ServerPort("localhost", Port, ServerCredentials.Insecure) }
-};
-server.Start();
-
-Console.WriteLine("RouteGuide server listening on port " + port);
-Console.WriteLine("Press any key to stop the server...");
-Console.ReadKey();
-
-server.ShutdownAsync().Wait();
-```
-As you can see, we build and start our server using `Grpc.Core.Server` class. To do this, we:
-
-1. Create an instance of `Grpc.Core.Server`.
-1. Create an instance of our service implementation class `RouteGuideImpl`.
-3. Register our service implementation by adding its service definition to `Services` collection (We obtain the service definition from the generated `RouteGuide.BindService` method).
-2. Specify the address and port we want to use to listen for client requests. This is done by adding `ServerPort` to `Ports` collection.
-4. Call `Start` on the server instance to start an RPC server for our service.
-
-<a name="client"></a>
-## Creating the client
-
-In this section, we'll look at creating a C# client for our `RouteGuide` service. You can see our complete example client code in [RouteGuideClient/Program.cs](RouteGuideClient/Program.cs).
-
-### Creating a stub
-
-To call service methods, we first need to create a *stub*.
-
-First, we need to create a gRPC client channel that will connect to gRPC server. Then, we use the `RouteGuide.NewClient` method of the `RouteGuide` class generated from our .proto.
-
-```csharp
-Channel channel = new Channel("127.0.0.1:50052", Credentials.Insecure)
-var client = new RouteGuideClient(RouteGuide.NewClient(channel));
-
-// YOUR CODE GOES HERE
-
-channel.ShutdownAsync().Wait();
-```
-
-### Calling service methods
-
-Now let's look at how we call our service methods. gRPC C# provides asynchronous versions of each of the supported method types. For convenience,
-gRPC C# also provides a synchronous method stub, but only for simple (single request/single response) RPCs.
-
-#### Simple RPC
-
-Calling the simple RPC `GetFeature` in a synchronous way is nearly as straightforward as calling a local method.
-
-```csharp
-Point request = new Point { Latitude = 409146138, Longitude = -746188906 };
-Feature feature = client.GetFeature(request);
-```
-
-As you can see, we create and populate a request protocol buffer object (in our case `Point`), and call the desired method on the client object, passing it the request. If the RPC finishes with success, the response protocol buffer (in our case `Feature`) will be returned. Otherwise, an exception of type `RpcException` will be thrown, indicating the status code of the problem.
-
-Alternatively, if you are in async context, you can call an asynchronous version of the method (and use `await` keyword to await the result):
-```csharp
-Point request = new Point { Latitude = 409146138, Longitude = -746188906 };
-Feature feature = await client.GetFeatureAsync(request);
-```
-
-#### Streaming RPCs
-
-Now let's look at our streaming methods. If you've already read [Creating the server](#server) some of this may look very familiar - streaming RPCs are implemented in a similar way on both sides. The difference with respect to simple call is that the client methods return an instance of a call object, that provides access to request/response streams and/or asynchronous result (depending on the streaming type you are using).
-
-Here's where we call the server-side streaming method `ListFeatures`, which has property `ReponseStream` of type `IAsyncEnumerator<Feature>`
-
-```csharp
-using (var call = client.ListFeatures(request))
-{
-    while (await call.ResponseStream.MoveNext())
-    {
-        Feature feature = call.ResponseStream.Current;
-        Console.WriteLine("Received " + feature.ToString());
-    }
-}
-```
-
-The client-side streaming method `RecordRoute` is similar, except we use the property `RequestStream` to write the requests one by one using `WriteAsync` and eventually signal that no more request will be send using `CompleteAsync`. The method result can be obtained through the property
-`ResponseAsync`.
-```csharp
-using (var call = client.RecordRoute())
-{
-    foreach (var point in points)
-    {
-        await call.RequestStream.WriteAsync(point);
-    }
-    await call.RequestStream.CompleteAsync();
-
-    RouteSummary summary = await call.ResponseAsync;
-}
-```
-
-Finally, let's look at our bidirectional streaming RPC `RouteChat`. In this case, we write the request to `RequestStream` and receive the responses from `ResponseStream`. As you can see from the example, the streams are independent of each other. 
-
-```csharp
- using (var call = client.RouteChat())
- {
-    var responseReaderTask = Task.Run(async () =>
-    {
-        while (await call.ResponseStream.MoveNext())
-        {
-            var note = call.ResponseStream.Current;
-            Console.WriteLine("Received " + note);
-        }
-    });
-
-    foreach (RouteNote request in requests)
-    {
-        await call.RequestStream.WriteAsync(request);
-    }
-    await call.RequestStream.CompleteAsync();
-    await responseReaderTask;
-}
-```
-
-## Try it out!
-
-Build client and server:
-
-Open the solution `examples/csharp/route_guide/RouteGuide.sln` from Visual Studio (or Monodevelop on Linux) and hit "Build".
-
-Run the server, which will listen on port 50052:
-```
-> cd RouteGuideServer/bin/Debug
-> RouteGuideServer.exe
-```
-
-Run the client (in a different terminal):
-```
-> cd RouteGuideClient/bin/Debug
-> RouteGuideClient.exe
-```
-
-You can also run the server and client directly from Visual Studio.
-
-On Linux or Mac, use `mono RouteGuideServer.exe` and `mono RouteGuideClient.exe` to run the server and client.
+[gRPC Basics: C#]:http://www.grpc.io/docs/tutorials/basic/csharp.html
diff --git a/examples/csharp/route_guide/RouteGuide/RouteGuide.csproj b/examples/csharp/route_guide/RouteGuide/RouteGuide.csproj
index 302a783aa464b89aef5343df38fc4a702fb2aab0..d8f3c8f91d10f73bb00f2b5c594f2b6f3d3991d1 100644
--- a/examples/csharp/route_guide/RouteGuide/RouteGuide.csproj
+++ b/examples/csharp/route_guide/RouteGuide/RouteGuide.csproj
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" />
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
@@ -14,7 +14,7 @@
     <AssemblyName>RouteGuide</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <NuGetPackageImportStamp>443bbc38</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>256a7eeb</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -37,13 +37,13 @@
     <Reference Include="Google.Protobuf">
       <HintPath>..\packages\Google.Protobuf.3.0.0-alpha4\lib\portable-net45+netcore45+wpa81+wp8\Google.Protobuf.dll</HintPath>
     </Reference>
-    <Reference Include="Grpc.Core, Version=0.7.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+    <Reference Include="Grpc.Core, Version=0.7.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.0.7.0\lib\net45\Grpc.Core.dll</HintPath>
+      <HintPath>..\packages\Grpc.Core.0.7.1\lib\net45\Grpc.Core.dll</HintPath>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Newtonsoft.Json.7.0.1-beta2\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <HintPath>..\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -77,12 +77,12 @@
     <Error Condition="!Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets'))" />
   </Target>
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" />
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/examples/csharp/route_guide/RouteGuide/packages.config b/examples/csharp/route_guide/RouteGuide/packages.config
index 8cd2ee758d8010b7b9144d1d017e7f01feae501b..22d34981e5938d0f02a3c2e8751250fbad5f8689 100644
--- a/examples/csharp/route_guide/RouteGuide/packages.config
+++ b/examples/csharp/route_guide/RouteGuide/packages.config
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.Protobuf" version="3.0.0-alpha4" targetFramework="net45" />
-  <package id="Grpc" version="0.7.0" targetFramework="net45" />
-  <package id="Grpc.Core" version="0.7.0" targetFramework="net45" />
+  <package id="Grpc" version="0.7.1" targetFramework="net45" />
+  <package id="Grpc.Core" version="0.7.1" targetFramework="net45" />
   <package id="grpc.dependencies.openssl.redist" version="1.0.2.3" targetFramework="net45" />
   <package id="grpc.dependencies.zlib.redist" version="1.2.8.9" targetFramework="net45" />
-  <package id="grpc.native.csharp_ext" version="0.11.0" targetFramework="net45" />
+  <package id="grpc.native.csharp_ext" version="0.11.1" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="7.0.1-beta2" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/RouteGuideClient/App.config b/examples/csharp/route_guide/RouteGuideClient/App.config
deleted file mode 100644
index 8e15646352ec1d9a84bbc6504ef6b46e16bf7823..0000000000000000000000000000000000000000
--- a/examples/csharp/route_guide/RouteGuideClient/App.config
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<configuration>
-    <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
-    </startup>
-</configuration>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/RouteGuideClient/RouteGuideClient.csproj b/examples/csharp/route_guide/RouteGuideClient/RouteGuideClient.csproj
index cf9e567f5e0915e57841f3b8f6dcd3aa68ed60a0..f08f0ef43ae39e5a8cac5ccaced984f1659458ca 100644
--- a/examples/csharp/route_guide/RouteGuideClient/RouteGuideClient.csproj
+++ b/examples/csharp/route_guide/RouteGuideClient/RouteGuideClient.csproj
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" />
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
@@ -14,7 +14,7 @@
     <AssemblyName>RouteGuideClient</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <NuGetPackageImportStamp>77622de6</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>d40daa42</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -39,9 +39,13 @@
     <Reference Include="Google.Protobuf">
       <HintPath>..\packages\Google.Protobuf.3.0.0-alpha4\lib\portable-net45+netcore45+wpa81+wp8\Google.Protobuf.dll</HintPath>
     </Reference>
-    <Reference Include="Grpc.Core, Version=0.7.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+    <Reference Include="Grpc.Core, Version=0.7.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.0.7.0\lib\net45\Grpc.Core.dll</HintPath>
+      <HintPath>..\packages\Grpc.Core.0.7.1\lib\net45\Grpc.Core.dll</HintPath>
+    </Reference>
+    <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -59,7 +63,6 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="App.config" />
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
@@ -77,12 +80,12 @@
     <Error Condition="!Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets'))" />
   </Target>
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" />
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/examples/csharp/route_guide/RouteGuideClient/packages.config b/examples/csharp/route_guide/RouteGuideClient/packages.config
index 1273624cbd0ae9e4e5ecd8f722872c1628fd7d92..22d34981e5938d0f02a3c2e8751250fbad5f8689 100644
--- a/examples/csharp/route_guide/RouteGuideClient/packages.config
+++ b/examples/csharp/route_guide/RouteGuideClient/packages.config
@@ -1,10 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.Protobuf" version="3.0.0-alpha4" targetFramework="net45" />
-  <package id="Grpc" version="0.7.0" targetFramework="net45" />
-  <package id="Grpc.Core" version="0.7.0" targetFramework="net45" />
+  <package id="Grpc" version="0.7.1" targetFramework="net45" />
+  <package id="Grpc.Core" version="0.7.1" targetFramework="net45" />
   <package id="grpc.dependencies.openssl.redist" version="1.0.2.3" targetFramework="net45" />
   <package id="grpc.dependencies.zlib.redist" version="1.2.8.9" targetFramework="net45" />
-  <package id="grpc.native.csharp_ext" version="0.11.0" targetFramework="net45" />
+  <package id="grpc.native.csharp_ext" version="0.11.1" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/RouteGuideServer/App.config b/examples/csharp/route_guide/RouteGuideServer/App.config
deleted file mode 100644
index 8e15646352ec1d9a84bbc6504ef6b46e16bf7823..0000000000000000000000000000000000000000
--- a/examples/csharp/route_guide/RouteGuideServer/App.config
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<configuration>
-    <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
-    </startup>
-</configuration>
\ No newline at end of file
diff --git a/examples/csharp/route_guide/RouteGuideServer/RouteGuideServer.csproj b/examples/csharp/route_guide/RouteGuideServer/RouteGuideServer.csproj
index 55e1331c46723f6eeff871ce0046126f30a3cbac..f22b4e5653b45efaecdf8b4430bbd771af105dc1 100644
--- a/examples/csharp/route_guide/RouteGuideServer/RouteGuideServer.csproj
+++ b/examples/csharp/route_guide/RouteGuideServer/RouteGuideServer.csproj
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" />
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
@@ -14,7 +14,7 @@
     <AssemblyName>RouteGuideServer</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <NuGetPackageImportStamp>568005e2</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>e44ce7bb</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -39,9 +39,13 @@
     <Reference Include="Google.Protobuf">
       <HintPath>..\packages\Google.Protobuf.3.0.0-alpha4\lib\portable-net45+netcore45+wpa81+wp8\Google.Protobuf.dll</HintPath>
     </Reference>
-    <Reference Include="Grpc.Core, Version=0.7.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
+    <Reference Include="Grpc.Core, Version=0.7.1.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Grpc.Core.0.7.0\lib\net45\Grpc.Core.dll</HintPath>
+      <HintPath>..\packages\Grpc.Core.0.7.1\lib\net45\Grpc.Core.dll</HintPath>
+    </Reference>
+    <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -60,7 +64,6 @@
     <Compile Include="RouteGuideImpl.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="App.config" />
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
@@ -78,12 +81,12 @@
     <Error Condition="!Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.props'))" />
     <Error Condition="!Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.props'))" />
-    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.props'))" />
+    <Error Condition="!Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets'))" />
   </Target>
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" />
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.3\build\portable-net45\grpc.dependencies.openssl.redist.targets')" />
-  <Import Project="..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.0\build\portable-net45\grpc.native.csharp_ext.targets')" />
+  <Import Project="..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets" Condition="Exists('..\packages\grpc.native.csharp_ext.0.11.1\build\portable-net45\grpc.native.csharp_ext.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/examples/csharp/route_guide/RouteGuideServer/packages.config b/examples/csharp/route_guide/RouteGuideServer/packages.config
index 1273624cbd0ae9e4e5ecd8f722872c1628fd7d92..22d34981e5938d0f02a3c2e8751250fbad5f8689 100644
--- a/examples/csharp/route_guide/RouteGuideServer/packages.config
+++ b/examples/csharp/route_guide/RouteGuideServer/packages.config
@@ -1,10 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.Protobuf" version="3.0.0-alpha4" targetFramework="net45" />
-  <package id="Grpc" version="0.7.0" targetFramework="net45" />
-  <package id="Grpc.Core" version="0.7.0" targetFramework="net45" />
+  <package id="Grpc" version="0.7.1" targetFramework="net45" />
+  <package id="Grpc.Core" version="0.7.1" targetFramework="net45" />
   <package id="grpc.dependencies.openssl.redist" version="1.0.2.3" targetFramework="net45" />
   <package id="grpc.dependencies.zlib.redist" version="1.2.8.9" targetFramework="net45" />
-  <package id="grpc.native.csharp_ext" version="0.11.0" targetFramework="net45" />
+  <package id="grpc.native.csharp_ext" version="0.11.1" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/examples/node/README.md b/examples/node/README.md
index 045fe51ede9c88afb79b7f8b244a007a371e707d..df681e85dd7ed0f6a094ed75fdf8d6d18ba0f794 100644
--- a/examples/node/README.md
+++ b/examples/node/README.md
@@ -5,21 +5,11 @@ PREREQUISITES
 -------------
 
 - `node`: This requires Node 10.x or greater.
-- [homebrew][] on Mac OS X, [linuxbrew][] on Linux.  These simplify the installation of the gRPC C core.
+- [homebrew][] on Mac OS X.  This simplifies the installation of the gRPC C core.
 
 INSTALL
 -------
- - On Mac OS X, install [homebrew][]. On Linux, install [linuxbrew][]. Run the following command to install gRPC Node.js.
-
-  ```sh
-  $ curl -fsSL https://goo.gl/getgrpc | bash -s nodejs
-  ```
-  This will download and run the [gRPC install script][], then install the latest version of gRPC Nodejs npm package.
- - Clone this repository
-
-   ```sh
-   $ git clone https://github.com/grpc/grpc.git
-   ```
+ - [Install gRPC Node][]
 
  - Install this package's dependencies
 
@@ -55,6 +45,5 @@ TUTORIAL
 You can find a more detailed tutorial in [gRPC Basics: Node.js][]
 
 [homebrew]:http://brew.sh
-[linuxbrew]:https://github.com/Homebrew/linuxbrew#installation
-[gRPC install script]:https://raw.githubusercontent.com/grpc/homebrew-grpc/master/scripts/install
-[gRPC Basics: Node.js]:https://github.com/grpc/grpc/blob/master/examples/node/route_guide/README.md
+[Install gRPC Node]:../../src/node
+[gRPC Basics: Node.js]:http://www.grpc.io/docs/tutorials/basic/node.html
diff --git a/examples/node/greeter_client.js b/examples/node/greeter_client.js
index ddc8abbbed24e9f46d55ee116e7201bfad6840e2..175f8e6b5a8f7346279073cd18472b28487fc6b8 100644
--- a/examples/node/greeter_client.js
+++ b/examples/node/greeter_client.js
@@ -33,7 +33,7 @@
 
 var PROTO_PATH = __dirname + '/helloworld.proto';
 
-var grpc = require('grpc');
+var grpc = require('../../');
 var hello_proto = grpc.load(PROTO_PATH).helloworld;
 
 function main() {
diff --git a/examples/node/greeter_server.js b/examples/node/greeter_server.js
index 44b44afaafb799b65474efe02b5e544c0641d844..3600c8bfbf469247b896584bdf5860e991cd28f2 100644
--- a/examples/node/greeter_server.js
+++ b/examples/node/greeter_server.js
@@ -33,7 +33,7 @@
 
 var PROTO_PATH = __dirname + '/helloworld.proto';
 
-var grpc = require('grpc');
+var grpc = require('../../');
 var hello_proto = grpc.load(PROTO_PATH).helloworld;
 
 /**
diff --git a/examples/node/package.json b/examples/node/package.json
deleted file mode 100644
index 6c4f95b1093a349f9701456e821ef48a1f4ad09e..0000000000000000000000000000000000000000
--- a/examples/node/package.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "name": "grpc-demo",
-  "version": "0.5.0",
-  "dependencies": {
-    "async": "^0.9.0",
-    "grpc": "~0.11.0",
-    "minimist": "^1.1.0",
-    "underscore": "^1.8.2"
-  }
-}
diff --git a/examples/node/route_guide/README.md b/examples/node/route_guide/README.md
index 1048606509296133a1e1a2a06f6c741209e00efd..22bcf789863df05d58b03b5cc1cf19ed3a32bf7e 100644
--- a/examples/node/route_guide/README.md
+++ b/examples/node/route_guide/README.md
@@ -1,363 +1,5 @@
-#gRPC Basics: Node.js
+#gRPC Basics: Node.js sample code
 
-This tutorial provides a basic Node.js programmer's introduction to working with gRPC. By walking through this example you'll learn how to:
+The files in this folder are the samples used in [gRPC Basics: Node.js][], a detailed tutorial for using gRPC in Node.js.
 
-- Define a service in a .proto file.
-- Use the Node.js gRPC API to write a simple client and server for your service.
-
-It assumes that you have read the [Getting started](https://github.com/grpc/grpc/tree/master/examples) guide and are familiar with [protocol buffers] (https://developers.google.com/protocol-buffers/docs/overview). Note that the example in this tutorial uses the proto3 version of the protocol buffers language, which is currently in alpha release:you can find out more in the [proto3 language guide](https://developers.google.com/protocol-buffers/docs/proto3) and see the [release notes](https://github.com/google/protobuf/releases) for the new version in the protocol buffers Github repository.
-
-This isn't a comprehensive guide to using gRPC in Node.js: more reference documentation is coming soon.
-
-## Why use gRPC?
-
-Our example is a simple route mapping application that lets clients get information about features on their route, create a summary of their route, and exchange route information such as traffic updates with the server and other clients.
-
-With gRPC we can define our service once in a .proto file and implement clients and servers in any of gRPC's supported languages, which in turn can be run in environments ranging from servers inside Google to your own tablet - all the complexity of communication between different languages and environments is handled for you by gRPC. We also get all the advantages of working with protocol buffers, including efficient serialization, a simple IDL, and easy interface updating.
-
-## Example code and setup
-
-The example code for our tutorial is in [examples/node/route_guide](.). To download the example, clone this repository by running the following command:
-```shell
-$ git clone https://github.com/grpc/grpc.git
-```
-
-Then change your current directory to `examples/node/route_guide`:
-```shell
-$ cd examples/node/route_guide
-```
-
-You also should have the relevant tools installed to generate the server and client interface code - if you don't already, follow the setup instructions in [the Node.js quick start guide](..).
-
-
-## Defining the service
-
-Our first step (as you'll know from [Getting started](https://github.com/grpc/grpc/tree/master/examples)) is to define the gRPC *service* and the method *request* and *response* types using [protocol buffers] (https://developers.google.com/protocol-buffers/docs/overview). You can see the complete .proto file in [`examples/protos/route_guide.proto`](../../route_guide.proto).
-
-To define a service, you specify a named `service` in your .proto file:
-
-```protobuf
-service RouteGuide {
-   ...
-}
-```
-
-Then you define `rpc` methods inside your service definition, specifying their request and response types. gRPC lets you define four kinds of service method, all of which are used in the `RouteGuide` service:
-
-- A *simple RPC* where the client sends a request to the server using the stub and waits for a response to come back, just like a normal function call.
-```protobuf
-   // Obtains the feature at a given position.
-   rpc GetFeature(Point) returns (Feature) {}
-```
-
-- A *server-side streaming RPC* where the client sends a request to the server and gets a stream to read a sequence of messages back. The client reads from the returned stream until there are no more messages. As you can see in our example, you specify a server-side streaming method by placing the `stream` keyword before the *response* type.
-```protobuf
-  // Obtains the Features available within the given Rectangle.  Results are
-  // streamed rather than returned at once (e.g. in a response message with a
-  // repeated field), as the rectangle may cover a large area and contain a
-  // huge number of features.
-  rpc ListFeatures(Rectangle) returns (stream Feature) {}
-```
-
-- A *client-side streaming RPC* where the client writes a sequence of messages and sends them to the server, again using a provided stream. Once the client has finished writing the messages, it waits for the server to read them all and return its response. You specify a server-side streaming method by placing the `stream` keyword before the *request* type.
-```protobuf
-  // Accepts a stream of Points on a route being traversed, returning a
-  // RouteSummary when traversal is completed.
-  rpc RecordRoute(stream Point) returns (RouteSummary) {}
-```
-
-- A *bidirectional streaming RPC* where both sides send a sequence of messages using a read-write stream. The two streams operate independently, so clients and servers can read and write in whatever order they like: for example, the server could wait to receive all the client messages before writing its responses, or it could alternately read a message then write a message, or some other combination of reads and writes. The order of messages in each stream is preserved. You specify this type of method by placing the `stream` keyword before both the request and the response.
-```protobuf
-  // Accepts a stream of RouteNotes sent while a route is being traversed,
-  // while receiving other RouteNotes (e.g. from other users).
-  rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
-```
-
-Our .proto file also contains protocol buffer message type definitions for all the request and response types used in our service methods - for example, here's the `Point` message type:
-```protobuf
-// Points are represented as latitude-longitude pairs in the E7 representation
-// (degrees multiplied by 10**7 and rounded to the nearest integer).
-// Latitudes should be in the range +/- 90 degrees and longitude should be in
-// the range +/- 180 degrees (inclusive).
-message Point {
-  int32 latitude = 1;
-  int32 longitude = 2;
-}
-```
-
-
-## Loading service descriptors from proto files
-
-The Node.js library dynamically generates service descriptors and client stub definitions from `.proto` files loaded at runtime.
-
-To load a `.proto` file, simply `require` the gRPC library, then use its `load()` method:
-
-```node
-var grpc = require('grpc');
-var protoDescriptor = grpc.load(__dirname + '/route_guide.proto');
-// The protoDescriptor object has the full package hierarchy
-var example = protoDescriptor.routeguide;
-```
-
-Once you've done this, the stub constructor is in the `routeguide` namespace (`protoDescriptor.routeguide.RouteGuide`) and the service descriptor (which is used to create a server) is a property of the stub (`protoDescriptor.routeguide.RouteGuide.service`);
-
-<a name="server"></a>
-## Creating the server
-
-First let's look at how we create a `RouteGuide` server. If you're only interested in creating gRPC clients, you can skip this section and go straight to [Creating the client](#client) (though you might find it interesting anyway!).
-
-There are two parts to making our `RouteGuide` service do its job:
-- Implementing the service interface generated from our service definition: doing the actual "work" of our service.
-- Running a gRPC server to listen for requests from clients and return the service responses.
-
-You can find our example `RouteGuide` server in [route_guide_server.js](route_guide_server.js). Let's take a closer look at how it works.
-
-### Implementing RouteGuide
-
-As you can see, our server has a `Server` constructor generated from the `RouteGuide.service` descriptor object
-
-```node
-var Server = grpc.buildServer([routeguide.RouteGuide.service]);
-```
-In this case we're implementing the *asynchronous* version of `RouteGuide`, which provides our default gRPC server behaviour.
-
-The functions in `route_guide_server.js` implement all our service methods. Let's look at the simplest type first, `getFeature`, which just gets a `Point` from the client and returns the corresponding feature information from its database in a `Feature`.
-
-```node
-function checkFeature(point) {
-  var feature;
-  // Check if there is already a feature object for the given point
-  for (var i = 0; i < feature_list.length; i++) {
-    feature = feature_list[i];
-    if (feature.location.latitude === point.latitude &&
-        feature.location.longitude === point.longitude) {
-      return feature;
-    }
-  }
-  var name = '';
-  feature = {
-    name: name,
-    location: point
-  };
-  return feature;
-}
-function getFeature(call, callback) {
-  callback(null, checkFeature(call.request));
-}
-```
-
-The method is passed a call object for the RPC, which has the `Point` parameter as a property, and a callback to which we can pass our returned `Feature`. In the method body we populate a `Feature` corresponding to the given point and pass it to the callback, with a null first parameter to indicate that there is no error.
-
-Now let's look at something a bit more complicated - a streaming RPC. `listFeatures` is a server-side streaming RPC, so we need to send back multiple `Feature`s to our client.
-
-```node
-function listFeatures(call) {
-  var lo = call.request.lo;
-  var hi = call.request.hi;
-  var left = _.min([lo.longitude, hi.longitude]);
-  var right = _.max([lo.longitude, hi.longitude]);
-  var top = _.max([lo.latitude, hi.latitude]);
-  var bottom = _.min([lo.latitude, hi.latitude]);
-  // For each feature, check if it is in the given bounding box
-  _.each(feature_list, function(feature) {
-    if (feature.name === '') {
-      return;
-    }
-    if (feature.location.longitude >= left &&
-        feature.location.longitude <= right &&
-        feature.location.latitude >= bottom &&
-        feature.location.latitude <= top) {
-      call.write(feature);
-    }
-  });
-  call.end();
-}
-```
-
-As you can see, instead of getting the call object and callback in our method parameters, this time we get a `call` object that implements the `Writable` interface. In the method, we create as many `Feature` objects as we need to return, writing them to the `call` using its `write()` method. Finally, we call `call.end()` to indicate that we have sent all messages.
-
-If you look at the client-side streaming method `RecordRoute` you'll see it's quite similar to the unary call, except this time the `call` parameter implements the `Reader` interface. The `call`'s `'data'` event fires every time there is new data, and the `'end'` event fires when all data has been read. Like the unary case, we respond by calling the callback
-
-```node
-call.on('data', function(point) {
-  // Process user data
-});
-call.on('end', function() {
-  callback(null, result);
-});
-```
-
-Finally, let's look at our bidirectional streaming RPC `RouteChat()`.
-
-```node
-function routeChat(call) {
-  call.on('data', function(note) {
-    var key = pointKey(note.location);
-    /* For each note sent, respond with all previous notes that correspond to
-     * the same point */
-    if (route_notes.hasOwnProperty(key)) {
-      _.each(route_notes[key], function(note) {
-        call.write(note);
-      });
-    } else {
-      route_notes[key] = [];
-    }
-    // Then add the new note to the list
-    route_notes[key].push(JSON.parse(JSON.stringify(note)));
-  });
-  call.on('end', function() {
-    call.end();
-  });
-}
-```
-
-This time we get a `call` implementing `Duplex` that can be used to read *and* write messages. The syntax for reading and writing here is exactly the same as for our client-streaming and server-streaming methods. Although each side will always get the other's messages in the order they were written, both the client and server can read and write in any order — the streams operate completely independently.
-
-### Starting the server
-
-Once we've implemented all our methods, we also need to start up a gRPC server so that clients can actually use our service. The following snippet shows how we do this for our `RouteGuide` service:
-
-```node
-function getServer() {
-  var server = new grpc.Server();
-  server.addProtoService(routeguide.RouteGuide.service, {
-    getFeature: getFeature,
-    listFeatures: listFeatures,
-    recordRoute: recordRoute,
-    routeChat: routeChat
-  });
-  return server;
-}
-var routeServer = getServer();
-routeServer.bind('0.0.0.0:50051', grpc.ServerCredentials.createInsecure());
-routeServer.start();
-```
-
-As you can see, we build and start our server with the following steps:
-
- 1. Create a `Server` constructor from the `RouteGuide` service descriptor.
- 2. Implement the service methods.
- 3. Create an instance of the server by calling the `Server` constructor with the method implementations.
- 4. Specify the address and port we want to use to listen for client requests using the instance's `bind()` method.
- 5. Call `listen()` on the instance to start the RPC server.
-
-<a name="client"></a>
-## Creating the client
-
-In this section, we'll look at creating a Node.js client for our `RouteGuide` service. You can see our complete example client code in [route_guide_client.js](route_guide_client.js).
-
-### Creating a stub
-
-To call service methods, we first need to create a *stub*. To do this, we just need to call the RouteGuide stub constructor, specifying the server address and port.
-
-```node
-var client = new routeguide.RouteGuide('localhost:50051',
-                                       grpc.Credentials.createInsecure());
-```
-
-### Calling service methods
-
-Now let's look at how we call our service methods. Note that all of these methods are asynchronous: they use either events or callbacks to retrieve results.
-
-#### Simple RPC
-
-Calling the simple RPC `GetFeature` is nearly as straightforward as calling a local asynchronous method.
-
-```node
-var point = {latitude: 409146138, longitude: -746188906};
-stub.getFeature(point, function(err, feature) {
-  if (err) {
-    // process error
-  } else {
-    // process feature
-  }
-});
-```
-
-As you can see, we create and populate a request object. Finally, we call the method on the stub, passing it the request and callback. If there is no error, then we can read the response information from the server from our response object.
-
-```node
-      console.log('Found feature called "' + feature.name + '" at ' +
-          feature.location.latitude/COORD_FACTOR + ', ' +
-          feature.location.longitude/COORD_FACTOR);
-```
-
-#### Streaming RPCs
-
-Now let's look at our streaming methods. If you've already read [Creating the server](#server) some of this may look very familiar - streaming RPCs are implemented in a similar way on both sides. Here's where we call the server-side streaming method `ListFeatures`, which returns a stream of geographical `Feature`s:
-
-```node
-var call = client.listFeatures(rectangle);
-  call.on('data', function(feature) {
-      console.log('Found feature called "' + feature.name + '" at ' +
-          feature.location.latitude/COORD_FACTOR + ', ' +
-          feature.location.longitude/COORD_FACTOR);
-  });
-  call.on('end', function() {
-    // The server has finished sending
-  });
-  call.on('status', function(status) {
-    // process status
-  });
-```
-
-Instead of passing the method a request and callback, we pass it a request and get a `Readable` stream object back. The client can use the `Readable`'s `'data'` event to read the server's responses. This event fires with each `Feature` message object until there are no more messages: the `'end'` event indicates that the call is done. Finally, the status event fires when the server sends the status.
-
-The client-side streaming method `RecordRoute` is similar, except there we pass the method a callback and get back a `Writable`.
-
-```node
-    var call = client.recordRoute(function(error, stats) {
-      if (error) {
-        callback(error);
-      }
-      console.log('Finished trip with', stats.point_count, 'points');
-      console.log('Passed', stats.feature_count, 'features');
-      console.log('Travelled', stats.distance, 'meters');
-      console.log('It took', stats.elapsed_time, 'seconds');
-    });
-    function pointSender(lat, lng) {
-      return function(callback) {
-        console.log('Visiting point ' + lat/COORD_FACTOR + ', ' +
-            lng/COORD_FACTOR);
-        call.write({
-          latitude: lat,
-          longitude: lng
-        });
-        _.delay(callback, _.random(500, 1500));
-      };
-    }
-    var point_senders = [];
-    for (var i = 0; i < num_points; i++) {
-      var rand_point = feature_list[_.random(0, feature_list.length - 1)];
-      point_senders[i] = pointSender(rand_point.location.latitude,
-                                     rand_point.location.longitude);
-    }
-    async.series(point_senders, function() {
-      call.end();
-    });
-```
-
-Once we've finished writing our client's requests to the stream using `write()`, we need to call `end()` on the stream to let gRPC know that we've finished writing. If the status is `OK`, the `stats` object will be populated with the server's response.
-
-Finally, let's look at our bidirectional streaming RPC `routeChat()`. In this case, we just pass a context to the method and get back a `Duplex` stream object, which we can use to both write and read messages.
-
-```node
-var call = client.routeChat();
-```
-
-The syntax for reading and writing here is exactly the same as for our client-streaming and server-streaming methods. Although each side will always get the other's messages in the order they were written, both the client and server can read and write in any order — the streams operate completely independently.
-
-## Try it out!
-
-Build client and server:
-```shell
-$ npm install
-```
-Run the server, which will listen on port 50051:
-```shell
-$ node ./route_guide_server.js --db_path=route_guide_db.json
-```
-Run the client (in a different terminal):
-```shell
-$ node ./route_guide_client.js --db_path=route_guide_db.json
-```
+[gRPC Basics: Node.js]:http://www.grpc.io/docs/tutorials/basic/node.html
diff --git a/examples/node/route_guide/route_guide_client.js b/examples/node/route_guide/route_guide_client.js
index 1da6c690252c0ba824003e65009fa49de3994ae7..525d68f44cac947c36014f92c04983219952acf9 100644
--- a/examples/node/route_guide/route_guide_client.js
+++ b/examples/node/route_guide/route_guide_client.js
@@ -31,8 +31,8 @@ var async = require('async');
 var fs = require('fs');
 var parseArgs = require('minimist');
 var path = require('path');
-var _ = require('underscore');
-var grpc = require('grpc');
+var _ = require('lodash');
+var grpc = require('../../../');
 var routeguide = grpc.load(__dirname + '/route_guide.proto').routeguide;
 var client = new routeguide.RouteGuide('localhost:50051',
                                        grpc.Credentials.createInsecure());
diff --git a/examples/node/route_guide/route_guide_server.js b/examples/node/route_guide/route_guide_server.js
index faae3087fd1aba8a70d978841c72ffbe755ed2b6..5bb81446f0510974555473e025f187435e617dac 100644
--- a/examples/node/route_guide/route_guide_server.js
+++ b/examples/node/route_guide/route_guide_server.js
@@ -30,8 +30,8 @@
 var fs = require('fs');
 var parseArgs = require('minimist');
 var path = require('path');
-var _ = require('underscore');
-var grpc = require('grpc');
+var _ = require('lodash');
+var grpc = require('../../../');
 var routeguide = grpc.load(__dirname + '/route_guide.proto').routeguide;
 
 var COORD_FACTOR = 1e7;
diff --git a/examples/php/README.md b/examples/php/README.md
index 5c327f10faf82665c9f0efa96c5de800222270d1..a4ee8e698b9cc85bf28c2bb4e04c719b75da9da0 100644
--- a/examples/php/README.md
+++ b/examples/php/README.md
@@ -56,9 +56,10 @@ some Protocol Buffer 2.0 syntax. There is no proto3 support for PHP yet.
 TUTORIAL
 --------
 
-Coming soon
+You can find a more detailed tutorial in [gRPC Basics: PHP][]
 
 [homebrew]:http://brew.sh
 [linuxbrew]:https://github.com/Homebrew/linuxbrew#installation
 [gRPC install script]:https://raw.githubusercontent.com/grpc/homebrew-grpc/master/scripts/install
 [Node]:https://github.com/grpc/grpc/tree/master/examples/node
+[gRPC Basics: PHP]:http://www.grpc.io/docs/tutorials/basic/php.html
diff --git a/examples/php/composer.json b/examples/php/composer.json
index f0ce3a2aff4bdaacff50ab492aed9ce4ea46ba22..9f44f0b186ae536428f17da5ce2eeeac16193bf5 100644
--- a/examples/php/composer.json
+++ b/examples/php/composer.json
@@ -12,6 +12,6 @@
     "php": ">=5.5.0",
     "datto/protobuf-php": "dev-master",
     "google/auth": "dev-master",
-    "grpc/grpc": "dev-master"
+    "grpc/grpc": "dev-release-0_11"
   }
 }
diff --git a/examples/php/greeter_client.php b/examples/php/greeter_client.php
index 8ae19ae46c5fb680be8cf205d551def1bb3afa2d..e5e4c2651e92851a5f59c69ba4c73d485ca600a8 100644
--- a/examples/php/greeter_client.php
+++ b/examples/php/greeter_client.php
@@ -36,8 +36,7 @@ require dirname(__FILE__) . '/vendor/autoload.php';
 require dirname(__FILE__) . '/helloworld.php';
 
 function greet($name) {
-  $client = new helloworld\GreeterClient(
-      new Grpc\BaseStub('localhost:50051', []));
+  $client = new helloworld\GreeterClient('localhost:50051', []);
   $request = new helloworld\HelloRequest();
   $request->setName($name);
   list($reply, $status) = $client->SayHello($request)->wait();
diff --git a/examples/php/helloworld.php b/examples/php/helloworld.php
index 22da3d3970f746e757955bf5f5fea1237f2681bf..50923e6fcdc1afca71f4e702993b9e9b1610fcbb 100644
--- a/examples/php/helloworld.php
+++ b/examples/php/helloworld.php
@@ -1,7 +1,7 @@
 <?php
 // DO NOT EDIT! Generated by Protobuf-PHP protoc plugin 1.0
 // Source: helloworld.proto
-//   Date: 2015-05-29 21:39:19
+//   Date: 2015-09-24 20:40:14
 
 namespace helloworld {
 
@@ -143,18 +143,16 @@ namespace helloworld {
 
 namespace helloworld {
 
-  class GreeterClient{
+  class GreeterClient extends \Grpc\BaseStub {
 
-    private $rpc_impl;
-
-    public function __construct($rpc_impl) {
-      $this->rpc_impl = $rpc_impl;
+    public function __construct($hostname, $opts) {
+      parent::__construct($hostname, $opts);
     }
     /**
      * @param helloworld\HelloRequest $input
      */
-    public function SayHello(\helloworld\HelloRequest $argument, $metadata = array()) {
-      return $this->rpc_impl->_simpleRequest('/helloworld.Greeter/SayHello', $argument, '\helloworld\HelloReply::deserialize', $metadata);
+    public function SayHello(\helloworld\HelloRequest $argument, $metadata = array(), $options = array()) {
+      return $this->_simpleRequest('/helloworld.Greeter/SayHello', $argument, '\helloworld\HelloReply::deserialize', $metadata, $options);
     }
   }
 }
diff --git a/examples/php/route_guide/README.md b/examples/php/route_guide/README.md
index 00610ffb0916d091bc9dfa7c0aea5b75c0f00489..4e74a79f13641d55ba6f66d893f021474a1c918f 100644
--- a/examples/php/route_guide/README.md
+++ b/examples/php/route_guide/README.md
@@ -1,262 +1,6 @@
-#gRPC Basics: PHP
+#gRPC Basics: PHP sample code
 
-This tutorial provides a basic PHP programmer's introduction to working with gRPC. By walking through this example you'll learn how to:
+The files in this folder are the samples used in [gRPC Basics: PHP][],
+a detailed tutorial for using gRPC in Ruby.
 
-- Define a service in a .proto file.
-- Generate client code using the protocol buffer compiler.
-- Use the PHP gRPC API to write a simple client for your service.
-
-It assumes a passing familiarity with [protocol buffers](https://developers.google.com/protocol-buffers/docs/overview). Note that the example in this tutorial uses the proto2 version of the protocol buffers language.
-
-Also note that currently you can only create clients in PHP for gRPC services - you can find out how to create gRPC servers in our other tutorials, e.g. [Node.js](../node/route_guide).
-
-This isn't a comprehensive guide to using gRPC in PHP: more reference documentation is coming soon.
-
-- [Why use gRPC?](#why-grpc)
-- [Example code and setup](#setup)
-- [Try it out!](#try)
-- [Defining the service](#proto)
-- [Generating client code](#protoc)
-- [Creating the client](#client)
-
-
-<a name="why-grpc"></a>
-## Why use gRPC?
-
-With gRPC you can define your service once in a .proto file and implement clients and servers in any of gRPC's supported languages, which in turn can be run in environments ranging from servers inside Google to your own tablet - all the complexity of communication between different languages and environments is handled for you by gRPC. You also get all the advantages of working with protocol buffers, including efficient serialization, a simple IDL, and easy interface updating.
-
-
-<a name="setup"></a>
-## Example code and setup
-
-The example code for our tutorial is in [examples/php/route_guide](.). To download the example, clone this repository by running the following command:
-```shell
-$ git clone https://github.com/grpc/grpc.git
-```
-
-Then change your current directory to `examples/php/route_guide`:
-```shell
-$ cd examples/php/route_guide
-```
-
-Our example is a simple route mapping application that lets clients get information about features on their route, create a summary of their route, and exchange route information such as traffic updates with the server and other clients.
-
-You also should have the relevant tools installed to generate the client interface code (and a server in another language, for testing). You can obtain the latter by following [these setup instructions](https://github.com/grpc/homebrew-grpc).
-
-
-<a name="try"></a>
-## Try it out!
-
-To try the sample app, we need a gRPC server running locally. Let's compile and run, for example, the Node.js server in this repository:
-
-```shell
-$ cd ../../node
-$ npm install
-$ cd route_guide
-$ nodejs ./route_guide_server.js --db_path=route_guide_db.json
-```
-
-Run the PHP client (in a different terminal):
-
-```shell
-$ ./run_route_guide_client.sh
-```
-
-The next sections guide you step-by-step through how this proto service is defined, how to generate a client library from it, and how to create a client stub that uses that library.
-
-
-<a name="proto"></a>
-## Defining the service
-
-First let's look at how the service we're using is defined. A gRPC *service* and its method *request* and *response* types using [protocol buffers](https://developers.google.com/protocol-buffers/docs/overview). You can see the complete .proto file for our example in [`route_guide.proto`](route_guide.proto).
-
-To define a service, you specify a named `service` in your .proto file:
-
-```protobuf
-service RouteGuide {
-   ...
-}
-```
-
-Then you define `rpc` methods inside your service definition, specifying their request and response types. Protocol buffers let you define four kinds of service method, all of which are used in the `RouteGuide` service:
-
-- A *simple RPC* where the client sends a request to the server and receives a response later, just like a normal remote procedure call.
-```protobuf
-   // Obtains the feature at a given position.
-   rpc GetFeature(Point) returns (Feature) {}
-```
-
-- A *response-streaming RPC* where the client sends a request to the server and gets back a stream of response messages. You specify a response-streaming method by placing the `stream` keyword before the *response* type.
-```protobuf
-  // Obtains the Features available within the given Rectangle.  Results are
-  // streamed rather than returned at once (e.g. in a response message with a
-  // repeated field), as the rectangle may cover a large area and contain a
-  // huge number of features.
-  rpc ListFeatures(Rectangle) returns (stream Feature) {}
-```
-
-- A *request-streaming RPC* where the client sends a sequence of messages to the server. Once the client has finished writing the messages, it waits for the server to read them all and return its response. You specify a request-streaming method by placing the `stream` keyword before the *request* type.
-```protobuf
-  // Accepts a stream of Points on a route being traversed, returning a
-  // RouteSummary when traversal is completed.
-  rpc RecordRoute(stream Point) returns (RouteSummary) {}
-```
-
-- A *bidirectional streaming RPC* where both sides send a sequence of messages to the other. The two streams operate independently, so clients and servers can read and write in whatever order they like: for example, the server could wait to receive all the client messages before writing its responses, or it could alternately read a message then write a message, or some other combination of reads and writes. The order of messages in each stream is preserved. You specify this type of method by placing the `stream` keyword before both the request and the response.
-```protobuf
-  // Accepts a stream of RouteNotes sent while a route is being traversed,
-  // while receiving other RouteNotes (e.g. from other users).
-  rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
-```
-
-Our .proto file also contains protocol buffer message type definitions for all the request and response types used in our service methods - for example, here's the `Point` message type:
-```protobuf
-// Points are represented as latitude-longitude pairs in the E7 representation
-// (degrees multiplied by 10**7 and rounded to the nearest integer).
-// Latitudes should be in the range +/- 90 degrees and longitude should be in
-// the range +/- 180 degrees (inclusive).
-message Point {
-  int32 latitude = 1;
-  int32 longitude = 2;
-}
-```
-
-
-<a name="protoc"></a>
-## Generating client code
-
-The PHP client stub implementation of the proto files can be generated by the [`protoc-gen-php`](https://github.com/datto/protobuf-php) tool. To install the tool:
-
-```sh
-$ cd examples/php
-$ php composer.phar install
-$ cd vendor/datto/protobuf-php
-$ gem install rake ronn
-$ rake pear:package version=1.0
-$ sudo pear install Protobuf-1.0.tgz
-```
-
-To generate the client stub implementation .php file:
-
-```sh
-$ cd php/route_guide
-$ protoc-gen-php -i . -o . ./route_guide.proto
-```
-
-A `route_guide.php` file will be generated in the `php/route_guide` directory. You do not need to modify the file.
-
-To load the generated client stub file, simply `require` it in your PHP application:
-
-```php
-require dirname(__FILE__) . '/route_guide.php';
-```
-
-The file contains:
-- All the protocol buffer code to populate, serialize, and retrieve our request and response message types.
-- A class called `routeguide\RouteGuideClient` that lets clients call the methods defined in the `RouteGuide` service.
-
-
-<a name="client"></a>
-## Creating the client
-
-In this section, we'll look at creating a PHP client for our `RouteGuide` service. You can see our complete example client code in [route_guide_client.php](route_guide_client.php).
-
-### Constructing a client object
-
-To call service methods, we first need to create a client object, an instance of the generated `RouteGuideClient` class. The constructor of the class expects the server address and port we want to connect to:
-
-```php
-$client = new routeguide\RouteGuideClient(new Grpc\BaseStub('localhost:50051', []));
-```
-
-### Calling service methods
-
-Now let's look at how we call our service methods.
-
-#### Simple RPC
-
-Calling the simple RPC `GetFeature` is nearly as straightforward as calling a local asynchronous method.
-
-```php
-  $point = new routeguide\Point();
-  $point->setLatitude(409146138);
-  $point->setLongitude(-746188906);
-  list($feature, $status) = $client->GetFeature($point)->wait();
-```
-
-As you can see, we create and populate a request object, i.e. an `routeguide\Point` object. Then, we call the method on the stub, passing it the request object. If there is no error, then we can read the response information from the server from our response object, i.e. an `routeguide\Feature` object.
-
-```php
-  print sprintf("Found %s \n  at %f, %f\n", $feature->getName(),
-                $feature->getLocation()->getLatitude() / COORD_FACTOR,
-                $feature->getLocation()->getLongitude() / COORD_FACTOR);
-```
-
-#### Streaming RPCs
-
-Now let's look at our streaming methods. Here's where we call the server-side streaming method `ListFeatures`, which returns a stream of geographical `Feature`s:
-
-```php
-  $lo_point = new routeguide\Point();
-  $hi_point = new routeguide\Point();
-
-  $lo_point->setLatitude(400000000);
-  $lo_point->setLongitude(-750000000);
-  $hi_point->setLatitude(420000000);
-  $hi_point->setLongitude(-730000000);
-
-  $rectangle = new routeguide\Rectangle();
-  $rectangle->setLo($lo_point);
-  $rectangle->setHi($hi_point);
-
-  $call = $client->ListFeatures($rectangle);
-  // an iterator over the server streaming responses
-  $features = $call->responses();
-  foreach ($features as $feature) {
-    // process each feature
-  } // the loop will end when the server indicates there is no more responses to be sent.
-```
-
-The `$call->responses()` method call returns an iterator. When the server sends a response, a `$feature` object will be returned in the `foreach` loop, until the server indiciates that there will be no more responses to be sent.
-
-The client-side streaming method `RecordRoute` is similar, except there we pass the method an iterator and get back a `routeguide\RouteSummary`.
-
-```php
-  $points_iter = function($db) {
-    for ($i = 0; $i < $num_points; $i++) {
-      $point = new routeguide\Point();
-      $point->setLatitude($lat);
-      $point->setLongitude($long);
-      yield $point;
-    }
-  };
-  // $points_iter is an iterator simulating client streaming
-  list($route_summary, $status) =
-    $client->RecordRoute($points_iter($db))->wait();
-```
-
-Finally, let's look at our bidirectional streaming RPC `routeChat()`. In this case, we just pass a context to the method and get back a `BidiStreamingCall` stream object, which we can use to both write and read messages.
-
-```php
-$call = $client->RouteChat();
-```
-
-To write messages from the client:
-
-```php
-  foreach ($notes as $n) {
-    $route_note = new routerguide\RouteNote();
-    $call->write($route_note);
-  }
-  $call->writesDone();
-```
-
-To read messages from the server:
-
-```php
-  while ($route_note_reply = $call->read()) {
-    // process $route_note_reply
-  }
-```
-
-Each side will always get the other's messages in the order they were written, both the client and server can read and write in any order — the streams operate completely independently.
+[gRPC Basics: PHP]:http://www.grpc.io/docs/tutorials/basic/php.html
diff --git a/examples/php/route_guide/route_guide.php b/examples/php/route_guide/route_guide.php
index 76086f9772dfd3eb555b5915a7ef74f5d5d765be..0de319890d5182d39f99cfd25de55dbcc193ec20 100644
--- a/examples/php/route_guide/route_guide.php
+++ b/examples/php/route_guide/route_guide.php
@@ -1,7 +1,7 @@
 <?php
 // DO NOT EDIT! Generated by Protobuf-PHP protoc plugin 1.0
 // Source: route_guide.proto
-//   Date: 2015-08-31 21:11:45
+//   Date: 2015-09-24 21:21:51
 
 namespace routeguide {
 
diff --git a/examples/php/route_guide/route_guide_client.php b/examples/php/route_guide/route_guide_client.php
index d21a080995de0c3baac398c3013cb208234b567b..3cd1df725417095e78c32ba5a2d0f6fdb4472e86 100644
--- a/examples/php/route_guide/route_guide_client.php
+++ b/examples/php/route_guide/route_guide_client.php
@@ -37,8 +37,7 @@ require dirname(__FILE__) . '/route_guide.php';
 
 define('COORD_FACTOR', 1e7);
 
-$client = new routeguide\RouteGuideClient(
-  new Grpc\BaseStub('localhost:50051', []));
+$client = new routeguide\RouteGuideClient('localhost:50051', []);
 
 function printFeature($feature) {
   $name = $feature->getName();
@@ -96,6 +95,7 @@ function runListFeatures() {
   $rectangle->setLo($lo_point);
   $rectangle->setHi($hi_point);
 
+  // start the server streaming call
   $call = $client->ListFeatures($rectangle);
   // an iterator over the server streaming responses
   $features = $call->responses();
@@ -113,28 +113,27 @@ function runRecordRoute() {
   print "Running RecordRoute...\n";
   global $client, $argv;
 
+  // start the client streaming call
+  $call = $client->RecordRoute();
+
   $db = json_decode(file_get_contents($argv[1]), true);
-  $points_iter = function($db) {
-    $num_points_in_db = count($db);
-    $num_points = 10;
-    for ($i = 0; $i < $num_points; $i++) {
-      $point = new routeguide\Point();
-      $index = rand(0, $num_points_in_db - 1);
-      $lat = $db[$index]['location']['latitude'];
-      $long = $db[$index]['location']['longitude'];
-      $feature_name = $db[$index]['name'];
-      $point->setLatitude($lat);
-      $point->setLongitude($long);
-      print sprintf("Visiting point %f, %f,\n  with feature name: %s\n",
-                    $lat / COORD_FACTOR, $long / COORD_FACTOR,
-                    $feature_name ? $feature_name : '<empty>');
-      usleep(rand(300000, 800000));
-      yield $point;
-    }
-  };
-  // $points_iter is an iterator simulating client streaming
-  list($route_summary, $status) =
-    $client->RecordRoute($points_iter($db))->wait();
+  $num_points_in_db = count($db);
+  $num_points = 10;
+  for ($i = 0; $i < $num_points; $i++) {
+    $point = new routeguide\Point();
+    $index = rand(0, $num_points_in_db - 1);
+    $lat = $db[$index]['location']['latitude'];
+    $long = $db[$index]['location']['longitude'];
+    $feature_name = $db[$index]['name'];
+    $point->setLatitude($lat);
+    $point->setLongitude($long);
+    print sprintf("Visiting point %f, %f,\n  with feature name: %s\n",
+                  $lat / COORD_FACTOR, $long / COORD_FACTOR,
+                  $feature_name ? $feature_name : '<empty>');
+    usleep(rand(300000, 800000));
+    $call->write($point);
+  }
+  list($route_summary, $status) = $call->wait();
   print sprintf("Finished trip with %d points\nPassed %d features\n".
                 "Travelled %d meters\nIt took %d seconds\n",
                 $route_summary->getPointCount(),
diff --git a/examples/php/route_guide/run_route_guide_client.sh b/examples/php/route_guide/run_route_guide_client.sh
index e5ca07796be412f7f8950b9745366a66f8c32090..90ecc6270bb03e304e49667c12a5c3fa5b98c59e 100755
--- a/examples/php/route_guide/run_route_guide_client.sh
+++ b/examples/php/route_guide/run_route_guide_client.sh
@@ -30,7 +30,5 @@
 
 set -e
 cd $(dirname $0)
-command -v brew >/dev/null 2>&1 && \
-  extension_dir="-d extension_dir="`brew --prefix`/opt/grpc-php
-php $extension_dir -d extension=grpc.so \
+php $extension_dir -d extension=grpc.so -d max_execution_time=300 \
   route_guide_client.php ../../node/route_guide/route_guide_db.json
diff --git a/examples/php/run_greeter_client.sh b/examples/php/run_greeter_client.sh
index 2906de9af899847f8720251e5314a020e91ebd47..1a6e9ee1010d7b11335b90f4a678724a8264ac66 100755
--- a/examples/php/run_greeter_client.sh
+++ b/examples/php/run_greeter_client.sh
@@ -30,6 +30,5 @@
 
 set -e
 cd $(dirname $0)
-command -v brew >/dev/null 2>&1 && \
-  extension_dir="-d extension_dir="`brew --prefix`/opt/grpc-php
-php $extension_dir -d extension=grpc.so greeter_client.php $1
+php $extension_dir -d extension=grpc.so -d max_execution_time=300 \
+  greeter_client.php $1
diff --git a/examples/python/README.md b/examples/python/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..7b48c824baea41fa358c5a5c9a1d7426902de900
--- /dev/null
+++ b/examples/python/README.md
@@ -0,0 +1,55 @@
+gRPC in 3 minutes (Python)
+========================
+
+Background
+-------------
+For this sample, we've already generated the server and client stubs from
+[helloworld.proto][] and we'll be using a specific reference platform.
+
+Prerequisites
+-------------
+
+- Debian 8.2 "Jessie" platform with `root` access
+- `git`
+- `python2.7`
+- `pip`
+- Python development headers
+
+Set-up
+-------
+  ```sh
+  $ # install the gRPC Core:
+  $ sudo apt-get install libgrpc-dev
+  $ # install gRPC Python:
+  $ sudo pip install -U grpcio==0.11.0b1
+  $ # Since this "hello, world" example uses protocol buffers:
+  $ sudo pip install -U protobuf==3.0.0a3
+  $ # Clone the repository to get the example code:
+  $ git clone https://github.com/grpc/grpc
+  $ # Navigate to the "hello, world" Python example:
+  $ cd grpc/examples/python/helloworld
+  ```
+
+Try it!
+-------
+
+- Run the server
+
+  ```sh
+  $ python2.7 greeter_server.py &
+  ```
+
+- Run the client
+
+  ```sh
+  $ python2.7 greeter_client.py
+  ```
+
+Tutorial
+--------
+
+You can find a more detailed tutorial in [gRPC Basics: Python][]
+
+[helloworld.proto]:../protos/helloworld.proto
+[Install gRPC Python]:../../src/python#installation
+[gRPC Basics: Python]:http://www.grpc.io/docs/tutorials/basic/python.html
diff --git a/examples/python/helloworld/README.md b/examples/python/helloworld/README.md
index 070b9e8837690ec9354c8cbe1c027347551606b1..e889863a23dada241145155a320863580c0d5b6b 100644
--- a/examples/python/helloworld/README.md
+++ b/examples/python/helloworld/README.md
@@ -1,113 +1 @@
-# gRPC Python Hello World
-
-This is a quick introduction with a simple example and installation instructions: for a more complete tutorial see [gRPC Basics: Python](../route_guide).
-
-### Install gRPC
-Make sure you have built gRPC Python from source on your system. Follow the instructions here:
-[https://github.com/grpc/grpc/blob/master/src/python/README.md](https://github.com/grpc/grpc/blob/master/src/python/README.md).
-
-This gives you a python virtual environment with installed gRPC Python
-in GRPC_ROOT/python2.7_virtual_environment. GRPC_ROOT is the path to which you
-have cloned the [gRPC git repo](https://github.com/grpc/grpc).
-
-### Get the source code
-
-The example code for our Hello World and our other examples live in the `examples`
-directory. Clone this repository to your local machine by running the
-following command:
-
-
-```sh
-$ git clone https://github.com/grpc/grpc.git
-```
-
-Change your current directory to examples/python/helloworld
-
-```sh
-$ cd examples/python/helloworld/
-```
-
-### Defining a service
-
-The first step in creating our example is to define a *service*: an RPC
-service specifies the methods that can be called remotely with their parameters
-and return types. As you saw in the
-[overview](#protocolbuffers) above, gRPC does this using [protocol
-buffers](https://developers.google.com/protocol-buffers/docs/overview). We
-use the protocol buffers interface definition language (IDL) to define our
-service methods, and define the parameters and return
-types as protocol buffer message types. Both the client and the
-server use interface code generated from the service definition.
-
-Here's our example service definition. The `Greeting`
-service has one method, `hello`, that lets the server receive a single
-`HelloRequest`
-message from the remote client containing the user's name, then send back
-a greeting in a single `HelloReply`. This is the simplest type of RPC you
-can specify in gRPC.
-
-```
-syntax = "proto3";
-
-option java_package = "io.grpc.examples";
-
-package helloworld;
-
-// The greeting service definition.
-service Greeter {
-  // Sends a greeting
-  rpc SayHello (HelloRequest) returns (HelloReply) {}
-}
-
-// The request message containing the user's name.
-message HelloRequest {
-  string name = 1;
-}
-
-// The response message containing the greetings
-message HelloReply {
-  string message = 1;
-}
-
-```
-
-<a name="generating"></a>
-### Generating gRPC code
-
-Once we've defined our service, we use the protocol buffer compiler
-`protoc` to generate the special client and server code we need to create
-our application. The generated code contains both stub code for clients to
-use and an abstract interface for servers to implement, both with the method
-defined in our `Greeting` service.
-
-To generate the client and server side interfaces:
-
-```sh
-$ ./run_codegen.sh
-```
-Which internally invokes the proto-compiler as:
-
-```sh
-$ protoc -I ../../protos --python_out=. --grpc_out=. --plugin=protoc-gen-grpc=`which grpc_python_plugin` ../../protos/helloworld.proto
-```
-
-### The client
-
-Client-side code can be found in [greeter_client.py](greeter_client.py).
-
-You can run the client using:
-
-```sh
-$ ./run_client.sh
-```
-
-
-### The server
-
-Server side code can be found in [greeter_server.py](greeter_server.py). 
-
-You can run the server using:
-
-```sh
-$ ./run_server.sh
-```
+[This code's documentation lives on the grpc.io site.](http://www.grpc.io/docs)
diff --git a/examples/python/helloworld/helloworld_pb2.py b/examples/python/helloworld/helloworld_pb2.py
new file mode 100644
index 0000000000000000000000000000000000000000..1b2674e4c8e8b26550374429da6ad74925a5bb5f
--- /dev/null
+++ b/examples/python/helloworld/helloworld_pb2.py
@@ -0,0 +1,202 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: helloworld.proto
+
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import message as _message
+from google.protobuf import reflection as _reflection
+from google.protobuf import symbol_database as _symbol_database
+from google.protobuf import descriptor_pb2
+# @@protoc_insertion_point(imports)
+
+_sym_db = _symbol_database.Default()
+
+
+
+
+DESCRIPTOR = _descriptor.FileDescriptor(
+  name='helloworld.proto',
+  package='helloworld',
+  syntax='proto3',
+  serialized_pb=b'\n\x10helloworld.proto\x12\nhelloworld\"\x1c\n\x0cHelloRequest\x12\x0c\n\x04name\x18\x01 \x01(\t\"\x1d\n\nHelloReply\x12\x0f\n\x07message\x18\x01 \x01(\t2I\n\x07Greeter\x12>\n\x08SayHello\x12\x18.helloworld.HelloRequest\x1a\x16.helloworld.HelloReply\"\x00\x42\x18\n\x10io.grpc.examples\xa2\x02\x03HLWb\x06proto3'
+)
+_sym_db.RegisterFileDescriptor(DESCRIPTOR)
+
+
+
+
+_HELLOREQUEST = _descriptor.Descriptor(
+  name='HelloRequest',
+  full_name='helloworld.HelloRequest',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='name', full_name='helloworld.HelloRequest.name', index=0,
+      number=1, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=32,
+  serialized_end=60,
+)
+
+
+_HELLOREPLY = _descriptor.Descriptor(
+  name='HelloReply',
+  full_name='helloworld.HelloReply',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='message', full_name='helloworld.HelloReply.message', index=0,
+      number=1, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=62,
+  serialized_end=91,
+)
+
+DESCRIPTOR.message_types_by_name['HelloRequest'] = _HELLOREQUEST
+DESCRIPTOR.message_types_by_name['HelloReply'] = _HELLOREPLY
+
+HelloRequest = _reflection.GeneratedProtocolMessageType('HelloRequest', (_message.Message,), dict(
+  DESCRIPTOR = _HELLOREQUEST,
+  __module__ = 'helloworld_pb2'
+  # @@protoc_insertion_point(class_scope:helloworld.HelloRequest)
+  ))
+_sym_db.RegisterMessage(HelloRequest)
+
+HelloReply = _reflection.GeneratedProtocolMessageType('HelloReply', (_message.Message,), dict(
+  DESCRIPTOR = _HELLOREPLY,
+  __module__ = 'helloworld_pb2'
+  # @@protoc_insertion_point(class_scope:helloworld.HelloReply)
+  ))
+_sym_db.RegisterMessage(HelloReply)
+
+
+DESCRIPTOR.has_options = True
+DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), b'\n\020io.grpc.examples\242\002\003HLW')
+import abc
+from grpc.beta import implementations as beta_implementations
+from grpc.early_adopter import implementations as early_adopter_implementations
+from grpc.framework.alpha import utilities as alpha_utilities
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+class EarlyAdopterGreeterServicer(object):
+  """<fill me in later!>"""
+  __metaclass__ = abc.ABCMeta
+  @abc.abstractmethod
+  def SayHello(self, request, context):
+    raise NotImplementedError()
+class EarlyAdopterGreeterServer(object):
+  """<fill me in later!>"""
+  __metaclass__ = abc.ABCMeta
+  @abc.abstractmethod
+  def start(self):
+    raise NotImplementedError()
+  @abc.abstractmethod
+  def stop(self):
+    raise NotImplementedError()
+class EarlyAdopterGreeterStub(object):
+  """<fill me in later!>"""
+  __metaclass__ = abc.ABCMeta
+  @abc.abstractmethod
+  def SayHello(self, request):
+    raise NotImplementedError()
+  SayHello.async = None
+def early_adopter_create_Greeter_server(servicer, port, private_key=None, certificate_chain=None):
+  import helloworld_pb2
+  import helloworld_pb2
+  method_service_descriptions = {
+    "SayHello": alpha_utilities.unary_unary_service_description(
+      servicer.SayHello,
+      helloworld_pb2.HelloRequest.FromString,
+      helloworld_pb2.HelloReply.SerializeToString,
+    ),
+  }
+  return early_adopter_implementations.server("helloworld.Greeter", method_service_descriptions, port, private_key=private_key, certificate_chain=certificate_chain)
+def early_adopter_create_Greeter_stub(host, port, metadata_transformer=None, secure=False, root_certificates=None, private_key=None, certificate_chain=None, server_host_override=None):
+  import helloworld_pb2
+  import helloworld_pb2
+  method_invocation_descriptions = {
+    "SayHello": alpha_utilities.unary_unary_invocation_description(
+      helloworld_pb2.HelloRequest.SerializeToString,
+      helloworld_pb2.HelloReply.FromString,
+    ),
+  }
+  return early_adopter_implementations.stub("helloworld.Greeter", method_invocation_descriptions, host, port, metadata_transformer=metadata_transformer, secure=secure, root_certificates=root_certificates, private_key=private_key, certificate_chain=certificate_chain, server_host_override=server_host_override)
+
+class BetaGreeterServicer(object):
+  """<fill me in later!>"""
+  __metaclass__ = abc.ABCMeta
+  @abc.abstractmethod
+  def SayHello(self, request, context):
+    raise NotImplementedError()
+
+class BetaGreeterStub(object):
+  """The interface to which stubs will conform."""
+  __metaclass__ = abc.ABCMeta
+  @abc.abstractmethod
+  def SayHello(self, request, timeout):
+    raise NotImplementedError()
+  SayHello.future = None
+
+def beta_create_Greeter_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+  import helloworld_pb2
+  import helloworld_pb2
+  request_deserializers = {
+    ('helloworld.Greeter', 'SayHello'): helloworld_pb2.HelloRequest.FromString,
+  }
+  response_serializers = {
+    ('helloworld.Greeter', 'SayHello'): helloworld_pb2.HelloReply.SerializeToString,
+  }
+  method_implementations = {
+    ('helloworld.Greeter', 'SayHello'): face_utilities.unary_unary_inline(servicer.SayHello),
+  }
+  server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+  return beta_implementations.server(method_implementations, options=server_options)
+
+def beta_create_Greeter_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+  import helloworld_pb2
+  import helloworld_pb2
+  request_serializers = {
+    ('helloworld.Greeter', 'SayHello'): helloworld_pb2.HelloRequest.SerializeToString,
+  }
+  response_deserializers = {
+    ('helloworld.Greeter', 'SayHello'): helloworld_pb2.HelloReply.FromString,
+  }
+  cardinalities = {
+    'SayHello': cardinality.Cardinality.UNARY_UNARY,
+  }
+  stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
+  return beta_implementations.dynamic_stub(channel, 'helloworld.Greeter', cardinalities, options=stub_options)
+# @@protoc_insertion_point(module_scope)
diff --git a/examples/python/route_guide/README.md b/examples/python/route_guide/README.md
index cb1aa7d78ae34cda62b57f04a6f39e424dbaf4ed..17b8a8edd5e14f1e5968bab0c2c2e99c24c267bb 100644
--- a/examples/python/route_guide/README.md
+++ b/examples/python/route_guide/README.md
@@ -1,299 +1 @@
-#gRPC Basics: Python
-
-This tutorial provides a basic Python programmer's introduction to working with gRPC. By walking through this example you'll learn how to:
-
-- Define a service in a .proto file.
-- Generate server and client code using the protocol buffer compiler.
-- Use the Python gRPC API to write a simple client and server for your service.
-
-It assumes that you have read the [Getting started](https://github.com/grpc/grpc/tree/master/examples) guide and are familiar with [protocol buffers] (https://developers.google.com/protocol-buffers/docs/overview). Note that the example in this tutorial uses the proto3 version of the protocol buffers language, which is currently in alpha release:you can find out more in the [proto3 language guide](https://developers.google.com/protocol-buffers/docs/proto3) and see the [release notes](https://github.com/google/protobuf/releases) for the new version in the protocol buffers Github repository.
-
-This isn't a comprehensive guide to using gRPC in Python: more reference documentation is coming soon.
-
-
-## Why use gRPC?
-
-This example is a simple route mapping application that lets clients get information about features on their route, create a summary of their route, and exchange route information such as traffic updates with the server and other clients.
-
-With gRPC you can define your service once in a .proto file and implement clients and servers in any of gRPC's supported languages, which in turn can be run in environments ranging from servers inside Google to your own tablet, with all the complexity of communication between different languages and environments is handled for you by gRPC. You also get all the advantages of working with protocol buffers, including efficient serialization, a simple IDL, and easy interface updating.
-
-## Example code and setup
-
-The example code for this tutorial is in [examples/python/route_guide](.). To download the example, clone this repository by running the following command:
-```shell
-$ git clone https://github.com/grpc/grpc.git
-```
-
-Then change your current directory to `examples/python/route_guide`:
-```shell
-$ cd examples/python/route_guide
-```
-
-You also should have the relevant tools installed to generate the server and client interface code - if you don't already, follow the setup instructions in [the Python quick start guide](../helloworld).
-
-## Defining the service
-
-Your first step (as you'll know from [Getting started](https://github.com/grpc/grpc/tree/master/examples)) is to define the gRPC *service* and the method *request* and *response* types using [protocol buffers](https://developers.google.com/protocol-buffers/docs/overview). You can see the complete .proto file in [`examples/protos/route_guide.proto`](../../protos/route_guide.proto).
-
-To define a service, you specify a named `service` in your .proto file:
-
-```protobuf
-service RouteGuide {
-   // (Method definitions not shown)
-}
-```
-
-Then you define `rpc` methods inside your service definition, specifying their request and response types. gRPC lets you define four kinds of service method, all of which are used in the `RouteGuide` service:
-
-- A *simple RPC* where the client sends a request to the server using the stub and waits for a response to come back, just like a normal function call.
-```protobuf
-   // Obtains the feature at a given position.
-   rpc GetFeature(Point) returns (Feature) {}
-```
-
-- A *response-streaming RPC* where the client sends a request to the server and gets a stream to read a sequence of messages back. The client reads from the returned stream until there are no more messages. As you can see in the example, you specify a response-streaming method by placing the `stream` keyword before the *response* type.
-```protobuf
-  // Obtains the Features available within the given Rectangle.  Results are
-  // streamed rather than returned at once (e.g. in a response message with a
-  // repeated field), as the rectangle may cover a large area and contain a
-  // huge number of features.
-  rpc ListFeatures(Rectangle) returns (stream Feature) {}
-```
-
-- A *request-streaming RPC* where the client writes a sequence of messages and sends them to the server, again using a provided stream. Once the client has finished writing the messages, it waits for the server to read them all and return its response. You specify a request-streaming method by placing the `stream` keyword before the *request* type.
-```protobuf
-  // Accepts a stream of Points on a route being traversed, returning a
-  // RouteSummary when traversal is completed.
-  rpc RecordRoute(stream Point) returns (RouteSummary) {}
-```
-
-- A *bidirectionally-streaming RPC* where both sides send a sequence of messages using a read-write stream. The two streams operate independently, so clients and servers can read and write in whatever order they like: for example, the server could wait to receive all the client messages before writing its responses, or it could alternately read a message then write a message, or some other combination of reads and writes. The order of messages in each stream is preserved. You specify this type of method by placing the `stream` keyword before both the request and the response.
-```protobuf
-  // Accepts a stream of RouteNotes sent while a route is being traversed,
-  // while receiving other RouteNotes (e.g. from other users).
-  rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
-```
-
-Your .proto file also contains protocol buffer message type definitions for all the request and response types used in our service methods - for example, here's the `Point` message type:
-```protobuf
-// Points are represented as latitude-longitude pairs in the E7 representation
-// (degrees multiplied by 10**7 and rounded to the nearest integer).
-// Latitudes should be in the range +/- 90 degrees and longitude should be in
-// the range +/- 180 degrees (inclusive).
-message Point {
-  int32 latitude = 1;
-  int32 longitude = 2;
-}
-```
-
-## Generating client and server code
-
-Next you need to generate the gRPC client and server interfaces from your .proto service definition. You do this using the protocol buffer compiler `protoc` with a special gRPC Python plugin. Make sure you've installed protoc and followed the gRPC Python plugin [installation instructions](https://github.com/grpc/grpc/blob/master/INSTALL) first):
-
-With `protoc` and the gRPC Python plugin installed, use the following command to generate the Python code:
-
-```shell
-$ protoc -I ../../protos --python_out=. --grpc_out=. --plugin=protoc-gen-grpc=`which grpc_python_plugin` ../../protos/route_guide.proto
-```
-
-Note that as we've already provided a version of the generated code in the example repository, running this command regenerates the appropriate file rather than creates a new one. The generated code file is called `route_guide_pb2.py` and contains:
-- classes for the messages defined in route_guide.proto
-- abstract classes for the service defined in route_guide.proto
-   - `BetaRouteGuideServicer`, which defines the interface for implementations of the RouteGuide service
-   - `BetaRouteGuideStub`, which can be used by clients to invoke RouteGuide RPCs
-- functions for application use
-   - `beta_create_RouteGuide_server`, which creates a gRPC server given a `BetaRouteGuideServicer` object
-   - `beta_create_RouteGuide_stub`, which can be used by clients to create a stub object
-
-<a name="server"></a>
-## Creating the server
-
-First let's look at how you create a `RouteGuide` server. If you're only interested in creating gRPC clients, you can skip this section and go straight to [Creating the client](#client) (though you might find it interesting anyway!).
-
-Creating and running a `RouteGuide` server breaks down into two work items:
-- Implementing the servicer interface generated from our service definition with functions that perform the actual "work" of the service.
-- Running a gRPC server to listen for requests from clients and transmit responses.
-
-You can find the example `RouteGuide` server in [route_guide_server.py](route_guide_server.py).
-
-### Implementing RouteGuide
-
-`route_guide_server.py` has a `RouteGuideServicer` class that implements the generated interface `route_guide_pb2.BetaRouteGuideServicer`:
-
-```python
-# RouteGuideServicer provides an implementation of the methods of the RouteGuide service.
-class RouteGuideServicer(route_guide_pb2.BetaRouteGuideServicer):
-```
-
-`RouteGuideServicer` implements all the `RouteGuide` service methods.
-
-#### Simple RPC
-
-Let's look at the simplest type first, `GetFeature`, which just gets a `Point` from the client and returns the corresponding feature information from its database in a `Feature`.
-
-```python
-  def GetFeature(self, request, context):
-    feature = get_feature(self.db, request)
-    if feature is None:
-      return route_guide_pb2.Feature(name="", location=request)
-    else:
-      return feature
-```
-
-The method is passed a `route_guide_pb2.Point` request for the RPC, and a `ServicerContext` object that provides RPC-specific information such as timeout limits. It returns a `route_guide_pb2.Feature` response.
-
-#### Response-streaming RPC
-
-Now let's look at the next method. `ListFeatures` is a response-streaming RPC that sends multiple `Feature`s to the client.
-
-```python
-  def ListFeatures(self, request, context):
-    left = min(request.lo.longitude, request.hi.longitude)
-    right = max(request.lo.longitude, request.hi.longitude)
-    top = max(request.lo.latitude, request.hi.latitude)
-    bottom = min(request.lo.latitude, request.hi.latitude)
-    for feature in self.db:
-      if (feature.location.longitude >= left and
-          feature.location.longitude <= right and
-          feature.location.latitude >= bottom and
-          feature.location.latitude <= top):
-        yield feature
-```
-
-Here the request message is a `route_guide_pb2.Rectangle` within which the client wants to find `Feature`s. Instead of returning a single response the method yields zero or more responses.
-
-#### Request-streaming RPC
-
-The request-streaming method `RecordRoute` uses an [iterator](https://docs.python.org/2/library/stdtypes.html#iterator-types) of request values and returns a single response value.
-
-```python
-  def RecordRoute(self, request_iterator, context):
-    point_count = 0
-    feature_count = 0
-    distance = 0.0
-    prev_point = None
-
-    start_time = time.time()
-    for point in request_iterator:
-      point_count += 1
-      if get_feature(self.db, point):
-        feature_count += 1
-      if prev_point:
-        distance += get_distance(prev_point, point)
-      prev_point = point
-
-    elapsed_time = time.time() - start_time
-    return route_guide_pb2.RouteSummary(point_count=point_count,
-                                        feature_count=feature_count,
-                                        distance=int(distance),
-                                        elapsed_time=int(elapsed_time))
-```
-
-#### Bidirectional streaming RPC
-
-Lastly let's look at the bidirectionally-streaming method `RouteChat`.
-
-```python
-  def RouteChat(self, request_iterator, context):
-    prev_notes = []
-    for new_note in request_iterator:
-      for prev_note in prev_notes:
-        if prev_note.location == new_note.location:
-          yield prev_note
-      prev_notes.append(new_note)
-```
-
-This method's semantics are a combination of those of the request-streaming method and the response-streaming method. It is passed an iterator of request values and is itself an iterator of response values.
-
-### Starting the server
-
-Once you have implemented all the `RouteGuide` methods, the next step is to start up a gRPC server so that clients can actually use your service:
-
-```python
-def serve():
-  server = route_guide_pb2.beta_create_RouteGuide_server(RouteGuideServicer())
-  server.add_insecure_port('[::]:50051')
-  server.start()
-```
-
-Because `start()` does not block you may need to sleep-loop if there is nothing else for your code to do while serving.
-
-<a name="client"></a>
-## Creating the client
-
-You can see the complete example client code in [route_guide_client.py](route_guide_client.py).
-
-### Creating a stub
-
-To call service methods, we first need to create a *stub*.
-
-We use the `beta_create_RouteGuide_stub` function of the `route_guide_pb2` module, generated from our .proto.
-
-```python
-channel = implementations.insecure_channel('localhost', 50051)
-stub = beta_create_RouteGuide_stub(channel)
-```
-
-The returned object implements all the methods defined by the `BetaRouteGuideStub` interface.
-
-### Calling service methods
-
-For RPC methods that return a single response ("response-unary" methods), gRPC Python supports both synchronous (blocking) and asynchronous (non-blocking) control flow semantics. For response-streaming RPC methods, calls immediately return an iterator of response values. Calls to that iterator's `next()` method block until the response to be yielded from the iterator becomes available.
-
-#### Simple RPC
-
-A synchronous call to the simple RPC `GetFeature` is nearly as straightforward as calling a local method. The RPC call waits for the server to respond, and will either return a response or raise an exception:
-
-```python
-feature = stub.GetFeature(point, timeout_in_seconds)
-```
-
-An asynchronous call to `GetFeature` is similar, but like calling a local method asynchronously in a thread pool:
-
-```python
-feature_future = stub.GetFeature.future(point, timeout_in_seconds)
-feature = feature_future.result()
-```
-
-#### Response-streaming RPC
-
-Calling the response-streaming `ListFeatures` is similar to working with sequence types:
-
-```python
-for feature in stub.ListFeatures(rectangle, timeout_in_seconds):
-```
-
-#### Request-streaming RPC
-
-Calling the request-streaming `RecordRoute` is similar to passing a sequence to a local method. Like the simple RPC above that also returns a single response, it can be called synchronously or asynchronously:
-
-```python
-route_summary = stub.RecordRoute(point_sequence, timeout_in_seconds)
-```
-
-```python
-route_summary_future = stub.RecordRoute.future(point_sequence, timeout_in_seconds)
-route_summary = route_summary_future.result()
-```
-
-#### Bidirectional streaming RPC
-
-Calling the bidirectionally-streaming `RouteChat` has (as is the case on the service-side) a combination of the request-streaming and response-streaming semantics:
-
-```python
-for received_route_note in stub.RouteChat(sent_routes, timeout_in_seconds):
-```
-
-## Try it out!
-
-Run the server, which will listen on port 50051:
-
-```shell
-$ python route_guide_server.py
-```
-
-Run the client (in a different terminal):
-
-```shell
-$ python route_guide_client.py
-```
+[This code's documentation lives on the grpc.io site.](http://www.grpc.io/docs/tutorials/basic/python.html)
diff --git a/examples/ruby/Gemfile b/examples/ruby/Gemfile
index 65d3f0ad4aeb3cf4411f8e2e46d3352d1d0647af..e75f0f6137f1945643434f707ea6ecae80e94b54 100644
--- a/examples/ruby/Gemfile
+++ b/examples/ruby/Gemfile
@@ -3,4 +3,4 @@
 
 source 'https://rubygems.org/'
 
-gem 'grpc', :git => 'https://github.com/grpc/grpc.git', :submodules => true, glob: 'src/ruby/*.gemspec'
+gemspec
diff --git a/examples/ruby/README.md b/examples/ruby/README.md
index 36f3527006c28e6379c20cf4006bd9d7f6d50f63..98dee13740189063f3a7f5a5b1a24121b9227706 100644
--- a/examples/ruby/README.md
+++ b/examples/ruby/README.md
@@ -25,8 +25,8 @@ RVM is also useful if you don't have the necessary privileges to update your sys
 
 INSTALL
 -------
+- [Install gRPC Ruby][]
 
-- Clone this repository
 - Use bundler to install the example package's dependencies
 
   ```sh
@@ -35,7 +35,7 @@ INSTALL
   $ bundle install
   ```
 
-Try it! 
+Try it!
 -------
 
 - Run the server
@@ -55,7 +55,9 @@ Try it!
 Tutorial
 --------
 
-You can find a more detailed tutorial in [gRPC Basics: Ruby](route_guide/README.md)
+You can find a more detailed tutorial in [gRPC Basics: Ruby][]
 
 [helloworld.proto]:../protos/helloworld.proto
 [RVM]:https://www.rvm.io/
+[Install gRPC ruby]:../../src/ruby#installation
+[gRPC Basics: Ruby]:http://www.grpc.io/docs/tutorials/basic/ruby.html
diff --git a/examples/ruby/greeter_server.rb b/examples/ruby/greeter_server.rb
index d4f9cf7d0f8eda211abcd51629844197ae72c2fa..622513d38054bfe6a235ac1d3b73f5ebeb402b70 100755
--- a/examples/ruby/greeter_server.rb
+++ b/examples/ruby/greeter_server.rb
@@ -52,9 +52,9 @@ end
 # server port.
 def main
   s = GRPC::RpcServer.new
-  s.add_http2_port('0.0.0.0:50051')
+  s.add_http2_port('0.0.0.0:50051', :this_port_is_insecure)
   s.handle(GreeterServer)
-  s.run
+  s.run_till_terminated
 end
 
 main
diff --git a/examples/ruby/grpc-demo.gemspec b/examples/ruby/grpc-demo.gemspec
index 2cc1eb8f41fadd2fdb4086dcf1755547fdfcaa77..b1dfdae6ab3f835ee8384324fb2cc7578f8380a5 100644
--- a/examples/ruby/grpc-demo.gemspec
+++ b/examples/ruby/grpc-demo.gemspec
@@ -3,7 +3,7 @@
 
 Gem::Specification.new do |s|
   s.name          = 'grpc-demo'
-  s.version       = '0.5.0'
+  s.version       = '0.11.0'
   s.authors       = ['gRPC Authors']
   s.email         = 'temiola@google.com'
   s.homepage      = 'https://github.com/grpc/grpc'
@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.require_paths = ['lib']
   s.platform      = Gem::Platform::RUBY
 
-  s.add_dependency 'grpc', '~> 0.6'
+  s.add_dependency 'grpc', '~> 0.11'
 
   s.add_development_dependency 'bundler', '~> 1.7'
 end
diff --git a/examples/ruby/lib/route_guide.rb b/examples/ruby/lib/route_guide.rb
index 98bac8395ce75077c659e2a1797450de79f657cc..424395c4f5f062d377d91991fdf817a13a945103 100644
--- a/examples/ruby/lib/route_guide.rb
+++ b/examples/ruby/lib/route_guide.rb
@@ -4,23 +4,23 @@
 require 'google/protobuf'
 
 Google::Protobuf::DescriptorPool.generated_pool.build do
-  add_message "examples.Point" do
+  add_message "routeguide.Point" do
     optional :latitude, :int32, 1
     optional :longitude, :int32, 2
   end
-  add_message "examples.Rectangle" do
-    optional :lo, :message, 1, "examples.Point"
-    optional :hi, :message, 2, "examples.Point"
+  add_message "routeguide.Rectangle" do
+    optional :lo, :message, 1, "routeguide.Point"
+    optional :hi, :message, 2, "routeguide.Point"
   end
-  add_message "examples.Feature" do
+  add_message "routeguide.Feature" do
     optional :name, :string, 1
-    optional :location, :message, 2, "examples.Point"
+    optional :location, :message, 2, "routeguide.Point"
   end
-  add_message "examples.RouteNote" do
-    optional :location, :message, 1, "examples.Point"
+  add_message "routeguide.RouteNote" do
+    optional :location, :message, 1, "routeguide.Point"
     optional :message, :string, 2
   end
-  add_message "examples.RouteSummary" do
+  add_message "routeguide.RouteSummary" do
     optional :point_count, :int32, 1
     optional :feature_count, :int32, 2
     optional :distance, :int32, 3
@@ -28,10 +28,10 @@ Google::Protobuf::DescriptorPool.generated_pool.build do
   end
 end
 
-module Examples
-  Point = Google::Protobuf::DescriptorPool.generated_pool.lookup("examples.Point").msgclass
-  Rectangle = Google::Protobuf::DescriptorPool.generated_pool.lookup("examples.Rectangle").msgclass
-  Feature = Google::Protobuf::DescriptorPool.generated_pool.lookup("examples.Feature").msgclass
-  RouteNote = Google::Protobuf::DescriptorPool.generated_pool.lookup("examples.RouteNote").msgclass
-  RouteSummary = Google::Protobuf::DescriptorPool.generated_pool.lookup("examples.RouteSummary").msgclass
+module Routeguide
+  Point = Google::Protobuf::DescriptorPool.generated_pool.lookup("routeguide.Point").msgclass
+  Rectangle = Google::Protobuf::DescriptorPool.generated_pool.lookup("routeguide.Rectangle").msgclass
+  Feature = Google::Protobuf::DescriptorPool.generated_pool.lookup("routeguide.Feature").msgclass
+  RouteNote = Google::Protobuf::DescriptorPool.generated_pool.lookup("routeguide.RouteNote").msgclass
+  RouteSummary = Google::Protobuf::DescriptorPool.generated_pool.lookup("routeguide.RouteSummary").msgclass
 end
diff --git a/examples/ruby/lib/route_guide_services.rb b/examples/ruby/lib/route_guide_services.rb
index 6e07653c425b39b06e82e7d3aa6b2e396618b851..082daef7543f5922c83bb14a30bd088acf6e4ecc 100644
--- a/examples/ruby/lib/route_guide_services.rb
+++ b/examples/ruby/lib/route_guide_services.rb
@@ -1,10 +1,10 @@
 # Generated by the protocol buffer compiler.  DO NOT EDIT!
-# Source: route_guide.proto for package 'examples'
+# Source: route_guide.proto for package 'routeguide'
 
 require 'grpc'
 require 'route_guide'
 
-module Examples
+module Routeguide
   module RouteGuide
 
     # TODO: add proto service documentation here
@@ -14,7 +14,7 @@ module Examples
 
       self.marshal_class_method = :encode
       self.unmarshal_class_method = :decode
-      self.service_name = 'examples.RouteGuide'
+      self.service_name = 'routeguide.RouteGuide'
 
       rpc :GetFeature, Point, Feature
       rpc :ListFeatures, Rectangle, stream(Feature)
diff --git a/examples/ruby/route_guide/README.md b/examples/ruby/route_guide/README.md
index 77e93d8bd4e8be62752281de9d108cc7c9cac009..3c353d1d976a200e3e5de686781289ebe869b12c 100644
--- a/examples/ruby/route_guide/README.md
+++ b/examples/ruby/route_guide/README.md
@@ -1,285 +1,6 @@
-#gRPC Basics: Ruby
+#gRPC Basics: Ruby sample code
 
-This tutorial provides a basic Ruby programmer's introduction to working with gRPC. By walking through this example you'll learn how to:
-
-- Define a service in a .proto file.
-- Generate server and client code using the protocol buffer compiler.
-- Use the Ruby gRPC API to write a simple client and server for your service.
-
-It assumes that you have read the [Getting started](https://github.com/grpc/grpc/tree/master/examples) guide and are familiar with [protocol buffers] (https://developers.google.com/protocol-buffers/docs/overview). Note that the example in this tutorial uses the proto3 version of the protocol buffers language, which is currently in alpha release:you can find out more in the [proto3 language guide](https://developers.google.com/protocol-buffers/docs/proto3) and see the [release notes](https://github.com/google/protobuf/releases) for the new version in the protocol buffers Github repository.
-
-This isn't a comprehensive guide to using gRPC in Ruby: more reference documentation is coming soon.
-
-## Why use gRPC?
-
-Our example is a simple route mapping application that lets clients get information about features on their route, create a summary of their route, and exchange route information such as traffic updates with the server and other clients.
-
-With gRPC we can define our service once in a .proto file and implement clients and servers in any of gRPC's supported languages, which in turn can be run in environments ranging from servers inside Google to your own tablet - all the complexity of communication between different languages and environments is handled for you by gRPC. We also get all the advantages of working with protocol buffers, including efficient serialization, a simple IDL, and easy interface updating.
-
-## Example code and setup
-
-The example code for our tutorial is in [examples/ruby/route_guide](.). To download the example, clone this repository by running the following command:
-```shell
-$ git clone https://github.com/grpc/grpc.git
-```
-
-Then change your current directory to `examples/ruby/route_guide`:
-```shell
-$ cd examples/ruby/route_guide
-```
-
-You also should have the relevant tools installed to generate the server and client interface code - if you don't already, follow the setup instructions in [the Ruby quick start guide](..).
-
-
-## Defining the service
-
-Our first step (as you'll know from [Getting started](https://github.com/grpc/grpc/tree/master/examples)) is to define the gRPC *service* and the method *request* and *response* types using [protocol buffers] (https://developers.google.com/protocol-buffers/docs/overview). You can see the complete .proto file in [`examples/protos/route_guide.proto`](../../route_guide.proto).
-
-To define a service, you specify a named `service` in your .proto file:
-
-```protobuf
-service RouteGuide {
-   ...
-}
-```
-
-Then you define `rpc` methods inside your service definition, specifying their request and response types. gRPC lets you define four kinds of service method, all of which are used in the `RouteGuide` service:
-
-- A *simple RPC* where the client sends a request to the server using the stub and waits for a response to come back, just like a normal function call.
-```protobuf
-   // Obtains the feature at a given position.
-   rpc GetFeature(Point) returns (Feature) {}
-```
-
-- A *server-side streaming RPC* where the client sends a request to the server and gets a stream to read a sequence of messages back. The client reads from the returned stream until there are no more messages. As you can see in our example, you specify a server-side streaming method by placing the `stream` keyword before the *response* type.
-```protobuf
-  // Obtains the Features available within the given Rectangle.  Results are
-  // streamed rather than returned at once (e.g. in a response message with a
-  // repeated field), as the rectangle may cover a large area and contain a
-  // huge number of features.
-  rpc ListFeatures(Rectangle) returns (stream Feature) {}
-```
-
-- A *client-side streaming RPC* where the client writes a sequence of messages and sends them to the server, again using a provided stream. Once the client has finished writing the messages, it waits for the server to read them all and return its response. You specify a server-side streaming method by placing the `stream` keyword before the *request* type.
-```protobuf
-  // Accepts a stream of Points on a route being traversed, returning a
-  // RouteSummary when traversal is completed.
-  rpc RecordRoute(stream Point) returns (RouteSummary) {}
-```
-
-- A *bidirectional streaming RPC* where both sides send a sequence of messages using a read-write stream. The two streams operate independently, so clients and servers can read and write in whatever order they like: for example, the server could wait to receive all the client messages before writing its responses, or it could alternately read a message then write a message, or some other combination of reads and writes. The order of messages in each stream is preserved. You specify this type of method by placing the `stream` keyword before both the request and the response.
-```protobuf
-  // Accepts a stream of RouteNotes sent while a route is being traversed,
-  // while receiving other RouteNotes (e.g. from other users).
-  rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
-```
-
-Our .proto file also contains protocol buffer message type definitions for all the request and response types used in our service methods - for example, here's the `Point` message type:
-```protobuf
-// Points are represented as latitude-longitude pairs in the E7 representation
-// (degrees multiplied by 10**7 and rounded to the nearest integer).
-// Latitudes should be in the range +/- 90 degrees and longitude should be in
-// the range +/- 180 degrees (inclusive).
-message Point {
-  int32 latitude = 1;
-  int32 longitude = 2;
-}
-```
-
-
-## Generating client and server code
-
-Next we need to generate the gRPC client and server interfaces from our .proto service definition. We do this using the protocol buffer compiler `protoc` with a special gRPC Ruby plugin.
-
-If you want to run this yourself, make sure you've installed protoc and followed the gRPC Ruby plugin [installation instructions](https://github.com/grpc/grpc/blob/master/INSTALL) first):
-
-Once that's done, the following command can be used to generate the ruby code.
-
-```shell
-$ protoc -I ../../protos --ruby_out=lib --grpc_out=lib --plugin=protoc-gen-grpc=`which grpc_ruby_plugin` ../../protos/route_guide.proto
-```
-
-Running this command regenerates the following files in the lib directory:
-- `lib/route_guide.pb` defines a module `Examples::RouteGuide`
-  - This contain all the protocol buffer code to populate, serialize, and retrieve our request and response message types
-- `lib/route_guide_services.pb`, extends `Examples::RouteGuide` with stub and service classes
-   - a class `Service` for use as a base class when defining RouteGuide service implementations
-   - a class `Stub` that can be used to access remote RouteGuide instances
-
-
-<a name="server"></a>
-## Creating the server
-
-First let's look at how we create a `RouteGuide` server. If you're only interested in creating gRPC clients, you can skip this section and go straight to [Creating the client](#client) (though you might find it interesting anyway!).
-
-There are two parts to making our `RouteGuide` service do its job:
-- Implementing the service interface generated from our service definition: doing the actual "work" of our service.
-- Running a gRPC server to listen for requests from clients and return the service responses.
-
-You can find our example `RouteGuide` server in [route_guide_server.rb](route_guide_server.rb). Let's take a closer look at how it works.
-
-### Implementing RouteGuide
-
-As you can see, our server has a `ServerImpl` class that extends the generated `RouteGuide::Service`:
-
-```ruby
-# ServerImpl provides an implementation of the RouteGuide service.
-class ServerImpl < RouteGuide::Service
-```
-
-`ServerImpl` implements all our service methods. Let's look at the simplest type first, `GetFeature`, which just gets a `Point` from the client and returns the corresponding feature information from its database in a `Feature`.
-
-```ruby
-  def get_feature(point, _call)
-    name = @feature_db[{
-      'longitude' => point.longitude,
-      'latitude' => point.latitude }] || ''
-    Feature.new(location: point, name: name)
-  end
-```
-
-The method is passed a _call for the RPC, the client's `Point` protocol buffer request, and returns a `Feature` protocol buffer. In the method we create the `Feature` with the appropriate information, and then `return` it.
-
-Now let's look at something a bit more complicated - a streaming RPC. `ListFeatures` is a server-side streaming RPC, so we need to send back multiple `Feature`s to our client.
-
-```ruby
-# in ServerImpl
-
-  def list_features(rectangle, _call)
-    RectangleEnum.new(@feature_db, rectangle).each
-  end
-```
-
-As you can see, here the request object is a `Rectangle` in which our client wants to find `Feature`s, but instead of returning a simple response we need to return an [Enumerator](http://ruby-doc.org//core-2.2.0/Enumerator.html) that yields the responses. In the method, we use a helper class `RectangleEnum`, to act as an Enumerator implementation.
-
-Similarly, the client-side streaming method `record_route` uses an [Enumerable](http://ruby-doc.org//core-2.2.0/Enumerable.html), but here it's obtained from the call object, which we've ignored in the earlier examples.  `call.each_remote_read` yields each message sent by the client in turn.
-
-```ruby
-  call.each_remote_read do |point|
-    ...
-  end
-```
-Finally, let's look at our bidirectional streaming RPC `route_chat`.
-
-```ruby
-  def route_chat(notes)
-    q = EnumeratorQueue.new(self)
-    t = Thread.new do
-      begin
-        notes.each do |n|
-		...
-      end
-	end
-    q = EnumeratorQueue.new(self)
-  ...
-    return q.each_item
-  end 
-```
-
-Here the method receives an [Enumerable](http://ruby-doc.org//core-2.2.0/Enumerable.html), but also returns an [Enumerator](http://ruby-doc.org//core-2.2.0/Enumerator.html) that yields the responses.  The implementation demonstrates how to set these up so that the requests and responses can be handled concurrently.  Although each side will always get the other's messages in the order they were written, both the client and server can read and write in any order — the streams operate completely independently.
-
-### Starting the server
-
-Once we've implemented all our methods, we also need to start up a gRPC server so that clients can actually use our service. The following snippet shows how we do this for our `RouteGuide` service:
-
-```ruby
-  s = GRPC::RpcServer.new
-  s.add_http2_port(port)
-  logger.info("... running insecurely on #{port}")
-  s.handle(ServerImpl.new(feature_db))
-  s.run
-```
-As you can see, we build and start our server using a `GRPC::RpcServer`. To do this, we:
-
-1. Create an instance of our service implementation class `ServerImpl`.
-2. Specify the address and port we want to use to listen for client requests using the builder's `add_http2_port` method.
-3. Register our service implementation with the `GRPC::RpcServer`.
-4. Call `run` on the`GRPC::RpcServer` to create and start an RPC server for our service.
-
-<a name="client"></a>
-## Creating the client
-
-In this section, we'll look at creating a Ruby client for our `RouteGuide` service. You can see our complete example client code in [route_guide_client.rb](route_guide_client.rb).
-
-### Creating a stub
-
-To call service methods, we first need to create a *stub*.
-
-We use the `Stub` class of the `RouteGuide` module generated from our .proto.
-
-```ruby
- stub = RouteGuide::Stub.new('localhost:50051')
-```
-
-### Calling service methods
-
-Now let's look at how we call our service methods. Note that the gRPC Ruby only provides  *blocking/synchronous* versions of each method: this means that the RPC call waits for the server to respond, and will either return a response or raise an exception.
-
-#### Simple RPC
-
-Calling the simple RPC `GetFeature` is nearly as straightforward as calling a local method.
-
-```ruby
-GET_FEATURE_POINTS = [
-  Point.new(latitude:  409_146_138, longitude: -746_188_906),
-  Point.new(latitude:  0, longitude: 0)
-]
-..
-  GET_FEATURE_POINTS.each do |pt|
-    resp = stub.get_feature(pt)
-	...
-    p "- found '#{resp.name}' at #{pt.inspect}"
-  end
-```
-
-As you can see, we create and populate a request protocol buffer object (in our case `Point`), and create a response protocol buffer object for the server to fill in.  Finally, we call the method on the stub, passing it the context, request, and response. If the method returns `OK`, then we can read the response information from the server from our response object.
-
-
-#### Streaming RPCs
-
-Now let's look at our streaming methods. If you've already read [Creating the server](#server) some of this may look very familiar - streaming RPCs are implemented in a similar way on both sides. Here's where we call the server-side streaming method `list_features`, which returns an `Enumerable` of `Features`
-
-```ruby
-  resps = stub.list_features(LIST_FEATURES_RECT)
-  resps.each do |r|
-    p "- found '#{r.name}' at #{r.location.inspect}"
-  end
-```
-
-The client-side streaming method `record_route` is similar, except there we pass the server an `Enumerable`.
-
-```ruby
-  ...
-  reqs = RandomRoute.new(features, points_on_route)
-  resp = stub.record_route(reqs.each, deadline)
-  ...
-```
-
-Finally, let's look at our bidirectional streaming RPC `route_chat`. In this case, we pass `Enumerable` to the method and get back an `Enumerable`.
-
-```ruby
-  resps = stub.route_chat(ROUTE_CHAT_NOTES)
-  resps.each { |r| p "received #{r.inspect}" }
-```
-
-Although it's not shown well by this example, each enumerable is independent of the other - both the client and server can read and write in any order — the streams operate completely independently.
-
-## Try it out!
-
-Build client and server:
-
-```shell
-$ # from examples/ruby
-$ gem install bundler && bundle install
-```
-Run the server, which will listen on port 50051:
-```shell
-$ # from examples/ruby
-$ bundle exec route_guide/route_guide_server.rb ../node/route_guide/route_guide_db.json &
-```
-Run the client (in a different terminal):
-```shell
-$ # from examples/ruby
-$ bundle exec route_guide/route_guide_client.rb ../node/route_guide/route_guide_db.json &
-```
+The files in this folder are the samples used in [gRPC Basics: Ruby][],
+a detailed tutorial for using gRPC in Ruby.
 
+[gRPC Basics: Ruby]:http://www.grpc.io/docs/tutorials/basic/ruby.html
diff --git a/examples/ruby/route_guide/route_guide_client.rb b/examples/ruby/route_guide/route_guide_client.rb
index 181623a68ac4e4bd91689f71892b7042d36abc65..baef0e502b535655256750cfd1b82f36d7059364 100755
--- a/examples/ruby/route_guide/route_guide_client.rb
+++ b/examples/ruby/route_guide/route_guide_client.rb
@@ -40,7 +40,7 @@ $LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
 require 'grpc'
 require 'route_guide_services'
 
-include Examples
+include Routeguide
 
 GET_FEATURE_POINTS = [
   Point.new(latitude:  409_146_138, longitude: -746_188_906),
diff --git a/examples/ruby/route_guide/route_guide_server.rb b/examples/ruby/route_guide/route_guide_server.rb
index 2b2b8084ef9c7c494dc2d526d3d8962b7e71d1ec..bebe49b3beb2e0cfeb8495087baf1ac58051ab50 100755
--- a/examples/ruby/route_guide/route_guide_server.rb
+++ b/examples/ruby/route_guide/route_guide_server.rb
@@ -42,7 +42,7 @@ require 'grpc'
 require 'multi_json'
 require 'route_guide_services'
 
-include Examples
+include Routeguide
 COORD_FACTOR = 1e7
 RADIUS = 637_100
 
@@ -202,10 +202,10 @@ def main
   feature_db = Hash[raw_data.map { |x| [x['location'], x['name']] }]
   port = '0.0.0.0:50051'
   s = GRPC::RpcServer.new
-  s.add_http2_port(port)
+  s.add_http2_port(port, :this_port_is_insecure)
   GRPC.logger.info("... running insecurely on #{port}")
   s.handle(ServerImpl.new(feature_db))
-  s.run
+  s.run_till_terminated
 end
 
 main
diff --git a/gRPC.podspec b/gRPC.podspec
index 393ff3ab0d61f0cad46c7492af02c7526b88ff4d..717e7005ee5d21208b301835a219ef70eb7cdc77 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -36,14 +36,16 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC'
-  s.version  = '0.11.0'
+  version = '0.11.1'
+  s.version  = version
   s.summary  = 'gRPC client library for iOS/OSX'
   s.homepage = 'http://www.grpc.io'
   s.license  = 'New BSD'
   s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
 
-  # s.source = { :git => 'https://github.com/grpc/grpc.git',
-  #              :tag => 'release-0_11_0-objectivec-0.11.0' }
+  s.source = { :git => 'https://github.com/grpc/grpc.git',
+               :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}" }
+
 
   s.ios.deployment_target = '7.1'
   s.osx.deployment_target = '10.9'
@@ -222,6 +224,7 @@ Pod::Spec.new do |s|
                       'src/core/profiling/timers.h',
                       'src/core/statistics/census_interface.h',
                       'src/core/statistics/census_rpc_stats.h',
+                      'src/core/surface/api_trace.h',
                       'src/core/surface/byte_buffer_queue.h',
                       'src/core/surface/call.h',
                       'src/core/surface/channel.h',
@@ -365,6 +368,7 @@ Pod::Spec.new do |s|
                       'src/core/json/json_writer.c',
                       'src/core/profiling/basic_timers.c',
                       'src/core/profiling/stap_timers.c',
+                      'src/core/surface/api_trace.c',
                       'src/core/surface/byte_buffer.c',
                       'src/core/surface/byte_buffer_queue.c',
                       'src/core/surface/byte_buffer_reader.c',
@@ -382,7 +386,6 @@ Pod::Spec.new do |s|
                       'src/core/surface/server.c',
                       'src/core/surface/server_chttp2.c',
                       'src/core/surface/server_create.c',
-                      'src/core/surface/surface_trace.c',
                       'src/core/surface/version.c',
                       'src/core/transport/chttp2/alpn.c',
                       'src/core/transport/chttp2/bin_encoder.c',
@@ -512,6 +515,7 @@ Pod::Spec.new do |s|
                               'src/core/profiling/timers.h',
                               'src/core/statistics/census_interface.h',
                               'src/core/statistics/census_rpc_stats.h',
+                              'src/core/surface/api_trace.h',
                               'src/core/surface/byte_buffer_queue.h',
                               'src/core/surface/call.h',
                               'src/core/surface/channel.h',
diff --git a/grpc.gyp b/grpc.gyp
index 60179f04ff75b61bd9e52ee6382a5e2824179d57..08185ac592ef0a9546e9e17e5a443211a8deba00 100644
--- a/grpc.gyp
+++ b/grpc.gyp
@@ -78,10 +78,15 @@
       '-ldl',
       '-lpthread',
       '-lz'
-    ]
+    ],
+    'direct_dependent_settings': {
+      'include_dirs': [
+        '.',
+        'include'
+      ],
+    }
   },
   'targets': [
-    # TODO: Add C++ targets
     {
       'target_name': 'gpr',
       'product_prefix': 'lib',
@@ -128,19 +133,6 @@
         'src/core/support/tls_pthread.c',
       ],
     },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'gpr_test_util',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'gpr',
-      ],
-      'sources': [
-        'test/core/util/test_config.c',
-      ],
-    },
-    # TODO: Add C++ targets
     {
       'target_name': 'grpc',
       'product_prefix': 'lib',
@@ -248,6 +240,7 @@
         'src/core/json/json_writer.c',
         'src/core/profiling/basic_timers.c',
         'src/core/profiling/stap_timers.c',
+        'src/core/surface/api_trace.c',
         'src/core/surface/byte_buffer.c',
         'src/core/surface/byte_buffer_queue.c',
         'src/core/surface/byte_buffer_reader.c',
@@ -265,193 +258,6 @@
         'src/core/surface/server.c',
         'src/core/surface/server_chttp2.c',
         'src/core/surface/server_create.c',
-        'src/core/surface/surface_trace.c',
-        'src/core/surface/version.c',
-        'src/core/transport/chttp2/alpn.c',
-        'src/core/transport/chttp2/bin_encoder.c',
-        'src/core/transport/chttp2/frame_data.c',
-        'src/core/transport/chttp2/frame_goaway.c',
-        'src/core/transport/chttp2/frame_ping.c',
-        'src/core/transport/chttp2/frame_rst_stream.c',
-        'src/core/transport/chttp2/frame_settings.c',
-        'src/core/transport/chttp2/frame_window_update.c',
-        'src/core/transport/chttp2/hpack_parser.c',
-        'src/core/transport/chttp2/hpack_table.c',
-        'src/core/transport/chttp2/huffsyms.c',
-        'src/core/transport/chttp2/incoming_metadata.c',
-        'src/core/transport/chttp2/parsing.c',
-        'src/core/transport/chttp2/status_conversion.c',
-        'src/core/transport/chttp2/stream_encoder.c',
-        'src/core/transport/chttp2/stream_lists.c',
-        'src/core/transport/chttp2/stream_map.c',
-        'src/core/transport/chttp2/timeout_encoding.c',
-        'src/core/transport/chttp2/varint.c',
-        'src/core/transport/chttp2/writing.c',
-        'src/core/transport/chttp2_transport.c',
-        'src/core/transport/connectivity_state.c',
-        'src/core/transport/metadata.c',
-        'src/core/transport/stream_op.c',
-        'src/core/transport/transport.c',
-        'src/core/transport/transport_op_string.c',
-        'src/core/census/context.c',
-        'src/core/census/initialize.c',
-        'src/core/census/operation.c',
-        'src/core/census/tracing.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'grpc_test_util',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'gpr',
-        'gpr_test_util',
-        'grpc',
-      ],
-      'sources': [
-        'test/core/end2end/data/server1_cert.c',
-        'test/core/end2end/data/server1_key.c',
-        'test/core/end2end/data/test_root_cert.c',
-        'test/core/end2end/cq_verifier.c',
-        'test/core/end2end/fixtures/proxy.c',
-        'test/core/iomgr/endpoint_tests.c',
-        'test/core/security/oauth2_utils.c',
-        'test/core/util/grpc_profiler.c',
-        'test/core/util/parse_hexstring.c',
-        'test/core/util/port_posix.c',
-        'test/core/util/port_windows.c',
-        'test/core/util/slice_splitter.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'grpc_test_util_unsecure',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'gpr',
-        'gpr_test_util',
-        'grpc',
-      ],
-      'sources': [
-        'test/core/end2end/cq_verifier.c',
-        'test/core/end2end/fixtures/proxy.c',
-        'test/core/iomgr/endpoint_tests.c',
-        'test/core/security/oauth2_utils.c',
-        'test/core/util/grpc_profiler.c',
-        'test/core/util/parse_hexstring.c',
-        'test/core/util/port_posix.c',
-        'test/core/util/port_windows.c',
-        'test/core/util/slice_splitter.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'grpc_unsecure',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'gpr',
-      ],
-      'sources': [
-        'src/core/surface/init_unsecure.c',
-        'src/core/census/grpc_context.c',
-        'src/core/census/grpc_filter.c',
-        'src/core/channel/channel_args.c',
-        'src/core/channel/channel_stack.c',
-        'src/core/channel/client_channel.c',
-        'src/core/channel/compress_filter.c',
-        'src/core/channel/connected_channel.c',
-        'src/core/channel/http_client_filter.c',
-        'src/core/channel/http_server_filter.c',
-        'src/core/channel/noop_filter.c',
-        'src/core/client_config/client_config.c',
-        'src/core/client_config/connector.c',
-        'src/core/client_config/lb_policies/pick_first.c',
-        'src/core/client_config/lb_policies/round_robin.c',
-        'src/core/client_config/lb_policy.c',
-        'src/core/client_config/lb_policy_factory.c',
-        'src/core/client_config/lb_policy_registry.c',
-        'src/core/client_config/resolver.c',
-        'src/core/client_config/resolver_factory.c',
-        'src/core/client_config/resolver_registry.c',
-        'src/core/client_config/resolvers/dns_resolver.c',
-        'src/core/client_config/resolvers/sockaddr_resolver.c',
-        'src/core/client_config/subchannel.c',
-        'src/core/client_config/subchannel_factory.c',
-        'src/core/client_config/subchannel_factory_decorators/add_channel_arg.c',
-        'src/core/client_config/subchannel_factory_decorators/merge_channel_args.c',
-        'src/core/client_config/uri_parser.c',
-        'src/core/compression/algorithm.c',
-        'src/core/compression/message_compress.c',
-        'src/core/debug/trace.c',
-        'src/core/httpcli/format_request.c',
-        'src/core/httpcli/httpcli.c',
-        'src/core/httpcli/parser.c',
-        'src/core/iomgr/alarm.c',
-        'src/core/iomgr/alarm_heap.c',
-        'src/core/iomgr/closure.c',
-        'src/core/iomgr/endpoint.c',
-        'src/core/iomgr/endpoint_pair_posix.c',
-        'src/core/iomgr/endpoint_pair_windows.c',
-        'src/core/iomgr/exec_ctx.c',
-        'src/core/iomgr/fd_posix.c',
-        'src/core/iomgr/iocp_windows.c',
-        'src/core/iomgr/iomgr.c',
-        'src/core/iomgr/iomgr_posix.c',
-        'src/core/iomgr/iomgr_windows.c',
-        'src/core/iomgr/pollset_multipoller_with_epoll.c',
-        'src/core/iomgr/pollset_multipoller_with_poll_posix.c',
-        'src/core/iomgr/pollset_posix.c',
-        'src/core/iomgr/pollset_set_posix.c',
-        'src/core/iomgr/pollset_set_windows.c',
-        'src/core/iomgr/pollset_windows.c',
-        'src/core/iomgr/resolve_address_posix.c',
-        'src/core/iomgr/resolve_address_windows.c',
-        'src/core/iomgr/sockaddr_utils.c',
-        'src/core/iomgr/socket_utils_common_posix.c',
-        'src/core/iomgr/socket_utils_linux.c',
-        'src/core/iomgr/socket_utils_posix.c',
-        'src/core/iomgr/socket_windows.c',
-        'src/core/iomgr/tcp_client_posix.c',
-        'src/core/iomgr/tcp_client_windows.c',
-        'src/core/iomgr/tcp_posix.c',
-        'src/core/iomgr/tcp_server_posix.c',
-        'src/core/iomgr/tcp_server_windows.c',
-        'src/core/iomgr/tcp_windows.c',
-        'src/core/iomgr/time_averaged_stats.c',
-        'src/core/iomgr/udp_server.c',
-        'src/core/iomgr/wakeup_fd_eventfd.c',
-        'src/core/iomgr/wakeup_fd_nospecial.c',
-        'src/core/iomgr/wakeup_fd_pipe.c',
-        'src/core/iomgr/wakeup_fd_posix.c',
-        'src/core/iomgr/workqueue_posix.c',
-        'src/core/iomgr/workqueue_windows.c',
-        'src/core/json/json.c',
-        'src/core/json/json_reader.c',
-        'src/core/json/json_string.c',
-        'src/core/json/json_writer.c',
-        'src/core/profiling/basic_timers.c',
-        'src/core/profiling/stap_timers.c',
-        'src/core/surface/byte_buffer.c',
-        'src/core/surface/byte_buffer_queue.c',
-        'src/core/surface/byte_buffer_reader.c',
-        'src/core/surface/call.c',
-        'src/core/surface/call_details.c',
-        'src/core/surface/call_log_batch.c',
-        'src/core/surface/channel.c',
-        'src/core/surface/channel_connectivity.c',
-        'src/core/surface/channel_create.c',
-        'src/core/surface/completion_queue.c',
-        'src/core/surface/event_string.c',
-        'src/core/surface/init.c',
-        'src/core/surface/lame_client.c',
-        'src/core/surface/metadata_array.c',
-        'src/core/surface/server.c',
-        'src/core/surface/server_chttp2.c',
-        'src/core/surface/server_create.c',
-        'src/core/surface/surface_trace.c',
         'src/core/surface/version.c',
         'src/core/transport/chttp2/alpn.c',
         'src/core/transport/chttp2/bin_encoder.c',
@@ -485,12165 +291,5 @@
         'src/core/census/tracing.c',
       ],
     },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'grpc_zookeeper',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'gpr',
-        'grpc',
-      ],
-      'sources': [
-        'src/core/client_config/resolvers/zookeeper_resolver.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'reconnect_server',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/util/reconnect_server.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_compress',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_compress.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_fakesec',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_fakesec.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_full',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_full.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_full+poll',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_full+poll.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_oauth2',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_oauth2.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_proxy',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_proxy.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_sockpair',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_sockpair.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_sockpair+trace',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_sockpair+trace.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_sockpair_1byte',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_sockpair_1byte.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_ssl',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_ssl.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_ssl+poll',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_ssl+poll.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_ssl_proxy',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_ssl_proxy.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_uds',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_uds.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_fixture_h2_uds+poll',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/fixtures/h2_uds+poll.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_bad_hostname',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/bad_hostname.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_binary_metadata',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/binary_metadata.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_call_creds',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/call_creds.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_cancel_after_accept',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/cancel_after_accept.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_cancel_after_client_done',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/cancel_after_client_done.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_cancel_after_invoke',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/cancel_after_invoke.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_cancel_before_invoke',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/cancel_before_invoke.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_cancel_in_a_vacuum',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/cancel_in_a_vacuum.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_census_simple_request',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/census_simple_request.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_channel_connectivity',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/channel_connectivity.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_compressed_payload',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/compressed_payload.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_default_host',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/default_host.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_disappearing_server',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/disappearing_server.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_empty_batch',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/empty_batch.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_graceful_server_shutdown',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/graceful_server_shutdown.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_high_initial_seqno',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/high_initial_seqno.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_invoke_large_request',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/invoke_large_request.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_large_metadata',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/large_metadata.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_max_concurrent_streams',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/max_concurrent_streams.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_max_message_length',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/max_message_length.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_metadata',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/metadata.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_no_op',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/no_op.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_payload',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/payload.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_ping_pong_streaming',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/ping_pong_streaming.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_registered_call',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/registered_call.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_request_with_flags',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/request_with_flags.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_request_with_payload',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/request_with_payload.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_server_finishes_request',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/server_finishes_request.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_shutdown_finishes_calls',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/shutdown_finishes_calls.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_shutdown_finishes_tags',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/shutdown_finishes_tags.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_simple_delayed_request',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/simple_delayed_request.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_simple_request',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/simple_request.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_test_trailing_metadata',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/tests/trailing_metadata.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'end2end_certs',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-      ],
-      'sources': [
-        'test/core/end2end/data/test_root_cert.c',
-        'test/core/end2end/data/server1_cert.c',
-        'test/core/end2end/data/server1_key.c',
-      ],
-    },
-    # TODO: Add C++ targets
-    {
-      'target_name': 'bad_client_test',
-      'product_prefix': 'lib',
-      'type': 'static_library',
-      'dependencies': [
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/bad_client/bad_client.c',
-      ],
-    },
-    {
-      'target_name': 'alarm_heap_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/iomgr/alarm_heap_test.c',
-      ]
-    },
-    {
-      'target_name': 'alarm_list_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/iomgr/alarm_list_test.c',
-      ]
-    },
-    {
-      'target_name': 'alpn_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/transport/chttp2/alpn_test.c',
-      ]
-    },
-    {
-      'target_name': 'bin_encoder_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/transport/chttp2/bin_encoder_test.c',
-      ]
-    },
-    {
-      'target_name': 'chttp2_status_conversion_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/transport/chttp2/status_conversion_test.c',
-      ]
-    },
-    {
-      'target_name': 'chttp2_stream_encoder_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/transport/chttp2/stream_encoder_test.c',
-      ]
-    },
-    {
-      'target_name': 'chttp2_stream_map_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/transport/chttp2/stream_map_test.c',
-      ]
-    },
-    {
-      'target_name': 'compression_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/compression/compression_test.c',
-      ]
-    },
-    {
-      'target_name': 'dualstack_socket_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/end2end/dualstack_socket_test.c',
-      ]
-    },
-    {
-      'target_name': 'endpoint_pair_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/iomgr/endpoint_pair_test.c',
-      ]
-    },
-    {
-      'target_name': 'fd_conservation_posix_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/iomgr/fd_conservation_posix_test.c',
-      ]
-    },
-    {
-      'target_name': 'fd_posix_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/iomgr/fd_posix_test.c',
-      ]
-    },
-    {
-      'target_name': 'fling_client',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/fling/client.c',
-      ]
-    },
-    {
-      'target_name': 'fling_server',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/fling/server.c',
-      ]
-    },
-    {
-      'target_name': 'fling_stream_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/fling/fling_stream_test.c',
-      ]
-    },
-    {
-      'target_name': 'fling_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/fling/fling_test.c',
-      ]
-    },
-    {
-      'target_name': 'gen_hpack_tables',
-      'type': 'executable',
-      'dependencies': [
-        'gpr',
-        'grpc',
-      ],
-      'sources': [
-        'tools/codegen/core/gen_hpack_tables.c',
-      ]
-    },
-    {
-      'target_name': 'gen_legal_metadata_characters',
-      'type': 'executable',
-      'dependencies': [
-      ],
-      'sources': [
-        'tools/codegen/core/gen_legal_metadata_characters.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_cmdline_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/cmdline_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_env_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/env_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_file_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/file_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_histogram_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/histogram_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_host_port_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/host_port_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_log_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/log_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_slice_buffer_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/slice_buffer_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_slice_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/slice_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_stack_lockfree_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/stack_lockfree_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_string_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/string_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_sync_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/sync_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_thd_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/thd_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_time_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/time_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_tls_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/tls_test.c',
-      ]
-    },
-    {
-      'target_name': 'gpr_useful_test',
-      'type': 'executable',
-      'dependencies': [
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/support/useful_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_auth_context_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/auth_context_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_base64_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/base64_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_byte_buffer_reader_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/surface/byte_buffer_reader_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_channel_args_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/channel/channel_args_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_channel_stack_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/channel/channel_stack_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_completion_queue_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/surface/completion_queue_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_create_jwt',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/create_jwt.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_credentials_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/credentials_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_fetch_oauth2',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/fetch_oauth2.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_json_token_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/json_token_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_jwt_verifier_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/jwt_verifier_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_print_google_default_creds_token',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/print_google_default_creds_token.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_security_connector_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/security_connector_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_stream_op_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/transport/stream_op_test.c',
-      ]
-    },
-    {
-      'target_name': 'grpc_verify_jwt',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/security/verify_jwt.c',
-      ]
-    },
-    {
-      'target_name': 'hpack_parser_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/transport/chttp2/hpack_parser_test.c',
-      ]
-    },
-    {
-      'target_name': 'hpack_table_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/transport/chttp2/hpack_table_test.c',
-      ]
-    },
-    {
-      'target_name': 'httpcli_format_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/httpcli/format_request_test.c',
-      ]
-    },
-    {
-      'target_name': 'httpcli_parser_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/httpcli/parser_test.c',
-      ]
-    },
-    {
-      'target_name': 'httpcli_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/httpcli/httpcli_test.c',
-      ]
-    },
-    {
-      'target_name': 'json_rewrite',
-      'type': 'executable',
-      'dependencies': [
-        'grpc',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/json/json_rewrite.c',
-      ]
-    },
-    {
-      'target_name': 'json_rewrite_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/json/json_rewrite_test.c',
-      ]
-    },
-    {
-      'target_name': 'json_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/json/json_test.c',
-      ]
-    },
-    {
-      'target_name': 'lame_client_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/surface/lame_client_test.c',
-      ]
-    },
-    {
-      'target_name': 'lb_policies_test',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/client_config/lb_policies_test.c',
-      ]
-    },
-    {
-      'target_name': 'low_level_ping_pong_benchmark',
-      'type': 'executable',
-      'dependencies': [
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
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-    },
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-        'grpc',
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-    },
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-        'grpc_test_util',
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-        'gpr_test_util',
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-    },
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-      'type': 'executable',
-      'dependencies': [
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-        'gpr_test_util',
-        'gpr',
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-      'sources': [
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_fakesec',
-        'end2end_test_bad_hostname',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'dependencies': [
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-        'end2end_test_call_creds',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'gpr',
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-        'gpr',
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-        'gpr',
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-      ]
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-        'end2end_test_cancel_before_invoke',
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-        'gpr',
-      ],
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-      ]
-    },
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-      'dependencies': [
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-        'gpr',
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-      ]
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-        'gpr',
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-      ]
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-        'gpr_test_util',
-        'gpr',
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-        'grpc_test_util',
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-        'gpr_test_util',
-        'gpr',
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-        'grpc',
-        'gpr_test_util',
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-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
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-      'dependencies': [
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-        'end2end_certs',
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-        'gpr_test_util',
-        'gpr',
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-      ]
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-        'end2end_certs',
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
-    },
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-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
-    },
-    {
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-      'dependencies': [
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
-    },
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
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-    {
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
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-        'end2end_test_bad_hostname',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'dependencies': [
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-        'end2end_test_binary_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
-    },
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'dependencies': [
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-        'end2end_test_cancel_after_client_done',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_cancel_after_invoke',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_cancel_before_invoke',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_cancel_in_a_vacuum',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_census_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'type': 'executable',
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-        'end2end_test_channel_connectivity',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_compressed_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_default_host',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_disappearing_server',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_empty_batch',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_graceful_server_shutdown',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_high_initial_seqno',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_invoke_large_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_invoke_large_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_large_metadata_test',
-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_large_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_max_concurrent_streams_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_max_concurrent_streams',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_max_message_length_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_max_message_length',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_no_op_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_no_op',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
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-    },
-    {
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-    },
-    {
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-    },
-    {
-      'target_name': 'h2_oauth2_cancel_in_a_vacuum_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_cancel_in_a_vacuum',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_census_simple_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_census_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_channel_connectivity_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_channel_connectivity',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_compressed_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_default_host_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_default_host',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_disappearing_server_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_disappearing_server',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_empty_batch',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_graceful_server_shutdown_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_graceful_server_shutdown',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_high_initial_seqno_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_high_initial_seqno',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_invoke_large_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_invoke_large_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_large_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_large_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_max_concurrent_streams_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_max_concurrent_streams',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_max_message_length_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_max_message_length',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_no_op_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_no_op',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_payload_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_ping_pong_streaming_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_ping_pong_streaming',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_registered_call_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_registered_call',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_request_with_flags_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_request_with_flags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_request_with_payload_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_request_with_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_server_finishes_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_server_finishes_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_shutdown_finishes_calls_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_shutdown_finishes_calls',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_shutdown_finishes_tags_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_shutdown_finishes_tags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_simple_delayed_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_simple_delayed_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_oauth2_simple_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_oauth2',
-        'end2end_test_trailing_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_bad_hostname_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_bad_hostname',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_binary_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_binary_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_call_creds_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_call_creds',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_cancel_after_accept_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_cancel_after_accept',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_cancel_after_client_done_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_cancel_after_client_done',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_cancel_after_invoke_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_cancel_after_invoke',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_cancel_before_invoke_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_cancel_before_invoke',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_cancel_in_a_vacuum_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_cancel_in_a_vacuum',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_census_simple_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_census_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_default_host_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_default_host',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_disappearing_server_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_disappearing_server',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_empty_batch_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_empty_batch',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_graceful_server_shutdown_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_graceful_server_shutdown',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_high_initial_seqno_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_high_initial_seqno',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_invoke_large_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_invoke_large_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_large_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_large_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_max_message_length_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_max_message_length',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_no_op_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_no_op',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_payload_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_ping_pong_streaming_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_ping_pong_streaming',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_registered_call_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_registered_call',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_request_with_payload_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_request_with_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_server_finishes_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_server_finishes_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_shutdown_finishes_calls_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_shutdown_finishes_calls',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_shutdown_finishes_tags_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_shutdown_finishes_tags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-      ],
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-      ]
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-      ]
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-        'gpr',
-      ],
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-      ]
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-        'gpr',
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-      ]
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
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-        'grpc_test_util',
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-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
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-        'gpr_test_util',
-        'gpr',
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-      ]
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
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-        'end2end_certs',
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-        'end2end_test_graceful_server_shutdown',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
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-        'end2end_test_invoke_large_request',
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-        'gpr_test_util',
-        'gpr',
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-      ]
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-        'grpc_test_util',
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-        'gpr_test_util',
-        'gpr',
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'gpr_test_util',
-        'gpr',
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-        'grpc_test_util',
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-        'gpr_test_util',
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-        'end2end_certs',
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-        'gpr_test_util',
-        'gpr',
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-      ]
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-      'dependencies': [
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
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-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
-    },
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
-    },
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
-    },
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-      'dependencies': [
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      'dependencies': [
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      'dependencies': [
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      'dependencies': [
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-      'dependencies': [
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'end2end_certs',
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-      'dependencies': [
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
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-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      'sources': [
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-    },
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-      'dependencies': [
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-        'end2end_test_high_initial_seqno',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_invoke_large_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_large_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_max_concurrent_streams',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_max_message_length_test',
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-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_max_message_length',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'gpr',
-      ],
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-        'gpr',
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-        'gpr_test_util',
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-        'gpr_test_util',
-        'gpr',
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-        'gpr',
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-        'gpr',
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-        'gpr_test_util',
-        'gpr',
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-        'grpc',
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-        'gpr',
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-        'grpc',
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-        'grpc',
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-        'gpr',
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-        'gpr_test_util',
-        'gpr',
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-        'gpr_test_util',
-        'gpr',
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-    },
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-      'dependencies': [
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-        'end2end_test_binary_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'end2end_certs',
-        'grpc_test_util',
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-        'gpr_test_util',
-        'gpr',
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-    },
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-        'gpr_test_util',
-        'gpr',
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-    },
-    {
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
-    {
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    {
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-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_census_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_compressed_payload_test',
-      'type': 'executable',
-      'dependencies': [
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-        'end2end_certs',
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-        'gpr_test_util',
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-    },
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-      'type': 'executable',
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-        'end2end_fixture_h2_ssl',
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-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
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-      'type': 'executable',
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-        'end2end_test_empty_batch',
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-      'dependencies': [
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-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
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-    {
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-      'dependencies': [
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-        'end2end_test_high_initial_seqno',
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-        'gpr_test_util',
-        'gpr',
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-      ]
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-    },
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_large_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_max_concurrent_streams',
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-        'end2end_fixture_h2_ssl',
-        'end2end_test_max_message_length',
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-        'end2end_test_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
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-        'end2end_fixture_h2_ssl',
-        'end2end_test_no_op',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-      'dependencies': [
-        'end2end_fixture_h2_ssl',
-        'end2end_test_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_ssl',
-        'end2end_test_ping_pong_streaming',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl',
-        'end2end_test_registered_call',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_ssl',
-        'end2end_test_request_with_flags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_ssl',
-        'end2end_test_request_with_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_server_finishes_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_shutdown_finishes_calls',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_shutdown_finishes_tags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-        'end2end_fixture_h2_ssl',
-        'end2end_test_simple_delayed_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
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-      ]
-    },
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-        'end2end_test_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl',
-        'end2end_test_trailing_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_bad_hostname',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_binary_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_call_creds',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_cancel_after_accept',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_cancel_after_client_done',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_cancel_after_invoke',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
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-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_cancel_in_a_vacuum',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_census_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_channel_connectivity',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_compressed_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_default_host',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_disappearing_server',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_empty_batch',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_graceful_server_shutdown',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_high_initial_seqno_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_high_initial_seqno',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_invoke_large_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_large_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_large_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_max_concurrent_streams_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_max_concurrent_streams',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_max_message_length_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_max_message_length',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_no_op_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_no_op',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_payload_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_ping_pong_streaming_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_ping_pong_streaming',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_registered_call_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_registered_call',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_request_with_flags_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_request_with_flags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_request_with_payload_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_request_with_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_server_finishes_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_server_finishes_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_shutdown_finishes_calls_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_shutdown_finishes_calls',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_shutdown_finishes_tags_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_shutdown_finishes_tags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_simple_delayed_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_simple_delayed_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_simple_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl+poll_trailing_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl+poll',
-        'end2end_test_trailing_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_bad_hostname_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_bad_hostname',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_binary_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_binary_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_call_creds_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_call_creds',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_cancel_after_accept_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_cancel_after_accept',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_cancel_after_client_done_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_cancel_after_client_done',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_cancel_after_invoke_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_cancel_after_invoke',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_cancel_before_invoke_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_cancel_before_invoke',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_cancel_in_a_vacuum_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_cancel_in_a_vacuum',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_census_simple_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_census_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_default_host_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_default_host',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_disappearing_server_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_disappearing_server',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_empty_batch_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_empty_batch',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_graceful_server_shutdown_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_graceful_server_shutdown',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_high_initial_seqno_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_high_initial_seqno',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_invoke_large_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_invoke_large_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_large_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_large_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_max_message_length_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_max_message_length',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_no_op_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_no_op',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_payload_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_ping_pong_streaming_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_ping_pong_streaming',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_registered_call_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_registered_call',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_request_with_payload_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_request_with_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_server_finishes_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_server_finishes_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_shutdown_finishes_calls_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_shutdown_finishes_calls',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_shutdown_finishes_tags_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_shutdown_finishes_tags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_simple_delayed_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_simple_delayed_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_simple_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_ssl_proxy_trailing_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_ssl_proxy',
-        'end2end_test_trailing_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_bad_hostname_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_bad_hostname',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_binary_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_binary_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_call_creds_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_call_creds',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_cancel_after_accept_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_after_accept',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_cancel_after_client_done_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_after_client_done',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_cancel_after_invoke_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_after_invoke',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_cancel_before_invoke_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_before_invoke',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_cancel_in_a_vacuum_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_in_a_vacuum',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_census_simple_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_census_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_channel_connectivity_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_channel_connectivity',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_compressed_payload_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_compressed_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_disappearing_server_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_disappearing_server',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_empty_batch_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_empty_batch',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_graceful_server_shutdown_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_graceful_server_shutdown',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_high_initial_seqno_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_high_initial_seqno',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_invoke_large_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_invoke_large_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_large_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_large_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_max_concurrent_streams_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_max_concurrent_streams',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_max_message_length_test',
-      'type': 'executable',
-      'dependencies': [
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-      ]
-    },
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-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
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-      'dependencies': [
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-        'end2end_test_ping_pong_streaming',
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-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'type': 'executable',
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-        'end2end_fixture_h2_uds',
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_request_with_flags_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_request_with_flags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_request_with_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_server_finishes_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_shutdown_finishes_calls',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_shutdown_finishes_tags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_simple_delayed_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-        'end2end_fixture_h2_uds',
-        'end2end_test_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_trailing_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_bad_hostname_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_bad_hostname',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_binary_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_binary_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_call_creds',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_cancel_after_client_done',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_cancel_in_a_vacuum_test',
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-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_cancel_in_a_vacuum',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_census_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_channel_connectivity',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_compressed_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_disappearing_server',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_empty_batch',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_high_initial_seqno',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_max_concurrent_streams',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_max_message_length',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
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-      'dependencies': [
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-        'end2end_test_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
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-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_ping_pong_streaming',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_registered_call_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_registered_call',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_request_with_flags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_request_with_payload',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_server_finishes_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_shutdown_finishes_calls_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_shutdown_finishes_calls',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_shutdown_finishes_tags_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_shutdown_finishes_tags',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_simple_delayed_request_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_simple_delayed_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_simple_request',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_trailing_metadata_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_trailing_metadata',
-        'end2end_certs',
-        'grpc_test_util',
-        'grpc',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_compress_bad_hostname_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_compress',
-        'end2end_test_bad_hostname',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_compress_binary_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_compress',
-        'end2end_test_binary_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_compress_cancel_after_accept_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_compress',
-        'end2end_test_cancel_after_accept',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_compress_cancel_after_client_done_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_compress',
-        'end2end_test_cancel_after_client_done',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_compress_cancel_after_invoke_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_compress',
-        'end2end_test_cancel_after_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_compress_cancel_before_invoke_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_compress',
-        'end2end_test_cancel_before_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
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-      'dependencies': [
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-      ]
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-      'dependencies': [
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-      ],
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-      'dependencies': [
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-      ],
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-      'dependencies': [
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-      ],
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-        'gpr',
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-      ]
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-    {
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-      'dependencies': [
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-        'gpr',
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-    {
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-      'dependencies': [
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-      'dependencies': [
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-      'dependencies': [
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-      'dependencies': [
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-      ],
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-      ]
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-      'dependencies': [
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-        'gpr',
-      ],
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-    },
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-        'gpr',
-      ],
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-        'gpr_test_util',
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-      ],
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-      ],
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-        'gpr_test_util',
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-      ],
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-        'gpr_test_util',
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-      ],
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-    {
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-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
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-      ],
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-    },
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-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_shutdown_finishes_tags',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'gpr_test_util',
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-      ]
-    },
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-        'gpr_test_util',
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-      ],
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-    },
-    {
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-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
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-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'grpc_unsecure',
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-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_cancel_after_client_done',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'dependencies': [
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-        'gpr',
-      ],
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-        'gpr',
-      ],
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-    },
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-      'dependencies': [
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-        'grpc_unsecure',
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-        'gpr',
-      ],
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-    },
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-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_channel_connectivity',
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-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'dependencies': [
-        'end2end_fixture_h2_full',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'dependencies': [
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-        'end2end_test_default_host',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
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-      'dependencies': [
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-        'end2end_test_disappearing_server',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'dependencies': [
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-        'grpc_unsecure',
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-        'gpr',
-      ],
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-    },
-    {
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-      'dependencies': [
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-        'end2end_test_graceful_server_shutdown',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'dependencies': [
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-        'end2end_test_invoke_large_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'dependencies': [
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-        'end2end_test_large_metadata',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_max_concurrent_streams',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
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-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_ping_pong_streaming_nosec_test',
-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_ping_pong_streaming',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_registered_call_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_registered_call',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_request_with_flags_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_request_with_flags',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_request_with_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_request_with_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_full_server_finishes_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_full',
-        'end2end_test_server_finishes_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-        'grpc_unsecure',
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-    },
-    {
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-        'gpr',
-      ],
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-    },
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
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-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
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-      'dependencies': [
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-        'end2end_test_high_initial_seqno',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_invoke_large_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_large_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_large_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_max_message_length',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
-      'target_name': 'h2_proxy_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_no_op',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_ping_pong_streaming_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_ping_pong_streaming',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_registered_call_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_registered_call',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_request_with_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_server_finishes_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_server_finishes_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_shutdown_finishes_calls_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_shutdown_finishes_calls',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_shutdown_finishes_tags_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_shutdown_finishes_tags',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_simple_delayed_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_simple_delayed_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_simple_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_proxy_trailing_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_proxy',
-        'end2end_test_trailing_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_bad_hostname_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_bad_hostname',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_binary_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_binary_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_cancel_after_accept_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_cancel_after_accept',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_cancel_after_client_done_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_cancel_after_client_done',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_cancel_after_invoke_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_cancel_after_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_cancel_before_invoke_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_cancel_before_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_cancel_in_a_vacuum_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_cancel_in_a_vacuum',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_census_simple_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_census_simple_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_compressed_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_compressed_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_empty_batch_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_empty_batch',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_graceful_server_shutdown_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_graceful_server_shutdown',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_high_initial_seqno_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_high_initial_seqno',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_invoke_large_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_invoke_large_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_large_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_large_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_max_concurrent_streams_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_max_concurrent_streams',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_max_message_length_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_max_message_length',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_no_op',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_ping_pong_streaming_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_ping_pong_streaming',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_registered_call',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_request_with_flags_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_request_with_flags',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_request_with_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_request_with_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_server_finishes_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_server_finishes_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_shutdown_finishes_calls_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_shutdown_finishes_calls',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_shutdown_finishes_tags_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_shutdown_finishes_tags',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_simple_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_simple_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair_trailing_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair',
-        'end2end_test_trailing_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_bad_hostname_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_bad_hostname',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_binary_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_binary_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_cancel_after_accept_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_cancel_after_accept',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_cancel_after_client_done_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_cancel_after_client_done',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_cancel_after_invoke_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_cancel_after_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_cancel_before_invoke_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_cancel_before_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_cancel_in_a_vacuum_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_cancel_in_a_vacuum',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_census_simple_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_census_simple_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_compressed_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_compressed_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_empty_batch_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_empty_batch',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_graceful_server_shutdown_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_sockpair+trace',
-        'end2end_test_graceful_server_shutdown',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_sockpair+trace_high_initial_seqno_nosec_test',
-      'type': 'executable',
-      'dependencies': [
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-      'dependencies': [
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-      'dependencies': [
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-      ],
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-      'dependencies': [
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-        'grpc_unsecure',
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-      'dependencies': [
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-      'dependencies': [
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-        'gpr_test_util',
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-        'grpc_unsecure',
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-        'grpc_unsecure',
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-        'grpc_unsecure',
-        'gpr_test_util',
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-        'grpc_unsecure',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
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-      'dependencies': [
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-        'grpc_unsecure',
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-        'gpr',
-      ],
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-    },
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-      'dependencies': [
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
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-        'end2end_test_bad_hostname',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_binary_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
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-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_after_accept',
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-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
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-    },
-    {
-      'target_name': 'h2_uds_cancel_after_client_done_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_after_client_done',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_after_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
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-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_before_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_cancel_in_a_vacuum_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_cancel_in_a_vacuum',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_census_simple_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_census_simple_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_channel_connectivity_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_channel_connectivity',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_compressed_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_compressed_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_disappearing_server_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_disappearing_server',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_empty_batch_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_empty_batch',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_graceful_server_shutdown_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_graceful_server_shutdown',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_high_initial_seqno_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_high_initial_seqno',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_invoke_large_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_invoke_large_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_large_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_large_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_max_concurrent_streams_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_max_concurrent_streams',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_max_message_length_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_max_message_length',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_no_op_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_no_op',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_ping_pong_streaming_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_ping_pong_streaming',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_registered_call_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_registered_call',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_request_with_flags_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_request_with_flags',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_request_with_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_request_with_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_server_finishes_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_server_finishes_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_shutdown_finishes_calls_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_shutdown_finishes_calls',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_shutdown_finishes_tags_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_shutdown_finishes_tags',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_simple_delayed_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_simple_delayed_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_simple_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_simple_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds_trailing_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds',
-        'end2end_test_trailing_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_bad_hostname_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_bad_hostname',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_binary_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_binary_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_cancel_after_accept_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_cancel_after_accept',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_cancel_after_client_done_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_cancel_after_client_done',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_cancel_after_invoke_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_cancel_after_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_cancel_before_invoke_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_cancel_before_invoke',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_cancel_in_a_vacuum_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_cancel_in_a_vacuum',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_census_simple_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_census_simple_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_channel_connectivity_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_channel_connectivity',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_compressed_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_compressed_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_disappearing_server_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_disappearing_server',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_empty_batch_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_empty_batch',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_graceful_server_shutdown_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_graceful_server_shutdown',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_high_initial_seqno_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_high_initial_seqno',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_invoke_large_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_invoke_large_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_large_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_large_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_max_concurrent_streams_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_max_concurrent_streams',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_max_message_length_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_max_message_length',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_no_op_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_no_op',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_ping_pong_streaming_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_ping_pong_streaming',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_registered_call_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_registered_call',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_request_with_flags_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_request_with_flags',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_request_with_payload_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_request_with_payload',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_server_finishes_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_server_finishes_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_shutdown_finishes_calls_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_shutdown_finishes_calls',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_shutdown_finishes_tags_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_shutdown_finishes_tags',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_simple_delayed_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_simple_delayed_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_simple_request_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_simple_request',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'h2_uds+poll_trailing_metadata_nosec_test',
-      'type': 'executable',
-      'dependencies': [
-        'end2end_fixture_h2_uds+poll',
-        'end2end_test_trailing_metadata',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-      ]
-    },
-    {
-      'target_name': 'connection_prefix_bad_client_test',
-      'type': 'executable',
-      'dependencies': [
-        'bad_client_test',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/bad_client/tests/connection_prefix.c',
-      ]
-    },
-    {
-      'target_name': 'initial_settings_frame_bad_client_test',
-      'type': 'executable',
-      'dependencies': [
-        'bad_client_test',
-        'grpc_test_util_unsecure',
-        'grpc_unsecure',
-        'gpr_test_util',
-        'gpr',
-      ],
-      'sources': [
-        'test/core/bad_client/tests/initial_settings_frame.c',
-      ]
-    },
   ]
 }
diff --git a/include/grpc/support/port_platform.h b/include/grpc/support/port_platform.h
index 3157a902a4fa1e2187825029f7386db7a5af4a90..434dd6de874e1988dabb7c8d576e4ec0e19c49ad 100644
--- a/include/grpc/support/port_platform.h
+++ b/include/grpc/support/port_platform.h
@@ -178,8 +178,6 @@
 #endif /* _LP64 */
 #elif defined(__APPLE__)
 #include <TargetConditionals.h>
-/* Provides IPV6_RECVPKTINFO */
-#define __APPLE_USE_RFC_3542
 #ifndef _BSD_SOURCE
 #define _BSD_SOURCE
 #endif
diff --git a/include/grpc/support/slice_buffer.h b/include/grpc/support/slice_buffer.h
index f3f14a6aa0b6903bdd4adbfdc7edfb483c670bdd..e4f296c32a300f845655d18d6c81b42bf03b12fa 100644
--- a/include/grpc/support/slice_buffer.h
+++ b/include/grpc/support/slice_buffer.h
@@ -87,7 +87,8 @@ void gpr_slice_buffer_swap(gpr_slice_buffer *a, gpr_slice_buffer *b);
 /* move all of the elements of src into dst */
 void gpr_slice_buffer_move_into(gpr_slice_buffer *src, gpr_slice_buffer *dst);
 /* remove n bytes from the end of a slice buffer */
-void gpr_slice_buffer_trim_end(gpr_slice_buffer *src, size_t n, gpr_slice_buffer *garbage);
+void gpr_slice_buffer_trim_end(gpr_slice_buffer *src, size_t n,
+                               gpr_slice_buffer *garbage);
 
 #ifdef __cplusplus
 }
diff --git a/src/node/package.json b/package.json
similarity index 55%
rename from src/node/package.json
rename to package.json
index 22f94757ce6c48ed7e638c25668a87d873889186..0eea3475a34b2b1e46ce7ca3ba3b506a2fc72e58 100644
--- a/src/node/package.json
+++ b/package.json
@@ -16,13 +16,13 @@
     }
   ],
   "directories": {
-    "lib": "src",
-    "example": "examples"
+    "lib": "src/node/src"
   },
   "scripts": {
-    "lint": "node ./node_modules/jshint/bin/jshint src test examples interop index.js",
-    "test": "node ./node_modules/mocha/bin/mocha && npm run-script lint",
-    "gen_docs": "./node_modules/.bin/jsdoc -c jsdoc_conf.json"
+    "lint": "node ./node_modules/jshint/bin/jshint src/node/src src/node/test src/node/examples src/node/interop src/node/index.js",
+    "test": "./node_modules/.bin/mocha src/node/test && npm run-script lint",
+    "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"
   },
   "dependencies": {
     "bindings": "^1.2.0",
@@ -33,29 +33,29 @@
   "devDependencies": {
     "async": "^0.9.0",
     "google-auth-library": "^0.9.2",
+    "istanbul": "^0.3.21",
     "jsdoc": "^3.3.2",
     "jshint": "^2.5.0",
     "minimist": "^1.1.0",
     "mocha": "~1.21.0",
-    "mustache": "^2.0.0",
-    "strftime": "^0.8.2"
+    "mustache": "^2.0.0"
   },
   "engines": {
     "node": ">=0.10.13"
   },
   "files": [
     "LICENSE",
-    "README.md",
-    "index.js",
-    "binding.gyp",
-    "bin",
-    "cli",
-    "examples",
-    "ext",
-    "interop",
-    "src",
-    "test"
+    "src/node/README.md",
+    "src/node/index.js",
+    "src/node/ext",
+    "src/node/health_check",
+    "src/node/src",
+    "src/core",
+    "test/proto",
+    "include",
+    "grpc.gyp",
+    "binding.gyp"
   ],
-  "main": "index.js",
+  "main": "src/node/index.js",
   "license": "BSD-3-Clause"
 }
diff --git a/src/core/README.md b/src/core/README.md
index 407dc4f70191b5aae336c2cb079238cb35327768..0d8c0d5bd90847ef520918ab1dac363a689e02aa 100644
--- a/src/core/README.md
+++ b/src/core/README.md
@@ -5,5 +5,4 @@ Python, PHP, NodeJS, Objective-C) are layered on top of this library.
 
 #Status
 
-Alpha : Ready for early adopters
-
+Beta
diff --git a/src/core/census/grpc_context.c b/src/core/census/grpc_context.c
index 429f3ec9db05008e3294cdd3f6d4c301ee67bcc0..4b61382a2c2fd0abbda851379fa9c5ceff12b96d 100644
--- a/src/core/census/grpc_context.c
+++ b/src/core/census/grpc_context.c
@@ -33,9 +33,12 @@
 
 #include <grpc/census.h>
 #include <grpc/grpc.h>
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/call.h"
 
 void grpc_census_call_set_context(grpc_call *call, census_context *context) {
+  GRPC_API_TRACE("grpc_census_call_set_context(call=%p, census_context=%p)", 2,
+                 (call, context));
   if (census_enabled() == CENSUS_FEATURE_NONE) {
     return;
   }
@@ -45,5 +48,6 @@ void grpc_census_call_set_context(grpc_call *call, census_context *context) {
 }
 
 census_context *grpc_census_call_get_context(grpc_call *call) {
+  GRPC_API_TRACE("grpc_census_call_get_context(call=%p)", 1, (call));
   return (census_context *)grpc_call_context_get(call, GRPC_CONTEXT_TRACING);
 }
diff --git a/src/core/channel/client_channel.c b/src/core/channel/client_channel.c
index 0193928a502f4768c3523f8bbb5ceb4ef197f269..8e7cb27cfd2bb3e7d6f23a6f9ea91bcadc512dc2 100644
--- a/src/core/channel/client_channel.c
+++ b/src/core/channel/client_channel.c
@@ -51,7 +51,7 @@
 
 typedef struct call_data call_data;
 
-typedef struct {
+typedef struct client_channel_channel_data {
   /** metadata context for this channel */
   grpc_mdctx *mdctx;
   /** resolver for this channel */
@@ -692,16 +692,9 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 }
 
 const grpc_channel_filter grpc_client_channel_filter = {
-    cc_start_transport_stream_op,
-    cc_start_transport_op,
-    sizeof(call_data),
-    init_call_elem,
-    destroy_call_elem,
-    sizeof(channel_data),
-    init_channel_elem,
-    destroy_channel_elem,
-    cc_get_peer,
-    "client-channel",
+    cc_start_transport_stream_op, cc_start_transport_op, sizeof(call_data),
+    init_call_elem, destroy_call_elem, sizeof(channel_data), init_channel_elem,
+    destroy_channel_elem, cc_get_peer, "client-channel",
 };
 
 void grpc_client_channel_set_resolver(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/channel/compress_filter.c b/src/core/channel/compress_filter.c
index 2aa826fcd8726d037103c0ec40ad49917b383de0..182fbf18bfc869f188f9a46898b80ec9a82d52d0 100644
--- a/src/core/channel/compress_filter.c
+++ b/src/core/channel/compress_filter.c
@@ -387,13 +387,6 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 }
 
 const grpc_channel_filter grpc_compress_filter = {
-    compress_start_transport_stream_op,
-    grpc_channel_next_op,
-    sizeof(call_data),
-    init_call_elem,
-    destroy_call_elem,
-    sizeof(channel_data),
-    init_channel_elem,
-    destroy_channel_elem,
-    grpc_call_next_get_peer,
-    "compress"};
+    compress_start_transport_stream_op, grpc_channel_next_op, sizeof(call_data),
+    init_call_elem, destroy_call_elem, sizeof(channel_data), init_channel_elem,
+    destroy_channel_elem, grpc_call_next_get_peer, "compress"};
diff --git a/src/core/channel/connected_channel.c b/src/core/channel/connected_channel.c
index ea701bc2846f395cd974ac1a66997fdf6c41f6ba..f9fc280259649ed5c288844bb99637f56bcf5475 100644
--- a/src/core/channel/connected_channel.c
+++ b/src/core/channel/connected_channel.c
@@ -130,16 +130,9 @@ static char *con_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
 }
 
 const grpc_channel_filter grpc_connected_channel_filter = {
-    con_start_transport_stream_op,
-    con_start_transport_op,
-    sizeof(call_data),
-    init_call_elem,
-    destroy_call_elem,
-    sizeof(channel_data),
-    init_channel_elem,
-    destroy_channel_elem,
-    con_get_peer,
-    "connected",
+    con_start_transport_stream_op, con_start_transport_op, sizeof(call_data),
+    init_call_elem, destroy_call_elem, sizeof(channel_data), init_channel_elem,
+    destroy_channel_elem, con_get_peer, "connected",
 };
 
 void grpc_connected_channel_bind_transport(grpc_channel_stack *channel_stack,
diff --git a/src/core/channel/noop_filter.c b/src/core/channel/noop_filter.c
index 91b30d61cae87699a36b103d67019ef23e09daa6..48f6b1c6500fab6bae2c1ea4ab25b245b4dd86a1 100644
--- a/src/core/channel/noop_filter.c
+++ b/src/core/channel/noop_filter.c
@@ -116,13 +116,7 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   ignore_unused(channeld);
 }
 
-const grpc_channel_filter grpc_no_op_filter = {noop_start_transport_stream_op,
-                                               grpc_channel_next_op,
-                                               sizeof(call_data),
-                                               init_call_elem,
-                                               destroy_call_elem,
-                                               sizeof(channel_data),
-                                               init_channel_elem,
-                                               destroy_channel_elem,
-                                               grpc_call_next_get_peer,
-                                               "no-op"};
+const grpc_channel_filter grpc_no_op_filter = {
+    noop_start_transport_stream_op, grpc_channel_next_op, sizeof(call_data),
+    init_call_elem, destroy_call_elem, sizeof(channel_data), init_channel_elem,
+    destroy_channel_elem, grpc_call_next_get_peer, "no-op"};
diff --git a/src/core/client_config/lb_policies/pick_first.c b/src/core/client_config/lb_policies/pick_first.c
index 5fa1ee4418056bb6775f3920c2b89a7a5fa4af31..4b3aaab09cca198abce236b2beca4320fdf2db82 100644
--- a/src/core/client_config/lb_policies/pick_first.c
+++ b/src/core/client_config/lb_policies/pick_first.c
@@ -101,6 +101,9 @@ void pf_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   for (i = 0; i < p->num_subchannels; i++) {
     GRPC_SUBCHANNEL_UNREF(exec_ctx, p->subchannels[i], "pick_first");
   }
+  if (p->selected) {
+    GRPC_SUBCHANNEL_UNREF(exec_ctx, p->selected, "picked_first");
+  }
   grpc_connectivity_state_destroy(exec_ctx, &p->state_tracker);
   gpr_free(p->subchannels);
   gpr_mu_destroy(&p->mu);
@@ -172,6 +175,35 @@ void pf_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
   }
 }
 
+static void destroy_subchannels(grpc_exec_ctx *exec_ctx, void *arg, 
+                                int iomgr_success) {
+  pick_first_lb_policy *p = arg;
+  size_t i;
+  grpc_transport_op op;
+  size_t num_subchannels = p->num_subchannels;
+  grpc_subchannel **subchannels;
+  grpc_subchannel *exclude_subchannel;
+
+  gpr_mu_lock(&p->mu);
+  subchannels = p->subchannels;
+  p->num_subchannels = 0;
+  p->subchannels = NULL;
+  exclude_subchannel = p->selected;
+  gpr_mu_unlock(&p->mu);
+  GRPC_LB_POLICY_UNREF(exec_ctx, &p->base, "destroy_subchannels");
+
+  for (i = 0; i < num_subchannels; i++) {
+    if (subchannels[i] != exclude_subchannel) {
+      memset(&op, 0, sizeof(op));
+      op.disconnect = 1;
+      grpc_subchannel_process_transport_op(exec_ctx, subchannels[i], &op);
+    }
+    GRPC_SUBCHANNEL_UNREF(exec_ctx, subchannels[i], "pick_first");
+  }
+
+  gpr_free(subchannels);
+}
+
 static void pf_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
                                     int iomgr_success) {
   pick_first_lb_policy *p = arg;
@@ -200,6 +232,11 @@ static void pf_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
         grpc_connectivity_state_set(exec_ctx, &p->state_tracker,
                                     GRPC_CHANNEL_READY, "connecting_ready");
         p->selected = p->subchannels[p->checking_subchannel];
+        GRPC_SUBCHANNEL_REF(p->selected, "picked_first");
+        /* drop the pick list: we are connected now */
+        GRPC_LB_POLICY_REF(&p->base, "destroy_subchannels");
+        grpc_exec_ctx_enqueue(exec_ctx, grpc_closure_create(destroy_subchannels, p), 1);
+        /* update any calls that were waiting for a pick */
         while ((pp = p->pending_picks)) {
           p->pending_picks = pp->next;
           *pp->target = p->selected;
@@ -279,10 +316,15 @@ static void pf_broadcast(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
   size_t i;
   size_t n;
   grpc_subchannel **subchannels;
+  grpc_subchannel *selected;
 
   gpr_mu_lock(&p->mu);
   n = p->num_subchannels;
   subchannels = gpr_malloc(n * sizeof(*subchannels));
+  selected = p->selected;
+  if (selected) {
+    GRPC_SUBCHANNEL_REF(selected, "pf_broadcast_to_selected");
+  }
   for (i = 0; i < n; i++) {
     subchannels[i] = p->subchannels[i];
     GRPC_SUBCHANNEL_REF(subchannels[i], "pf_broadcast");
@@ -290,9 +332,14 @@ static void pf_broadcast(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
   gpr_mu_unlock(&p->mu);
 
   for (i = 0; i < n; i++) {
+    if (selected == subchannels[i]) continue;
     grpc_subchannel_process_transport_op(exec_ctx, subchannels[i], op);
     GRPC_SUBCHANNEL_UNREF(exec_ctx, subchannels[i], "pf_broadcast");
   }
+  if (p->selected) {
+    grpc_subchannel_process_transport_op(exec_ctx, selected, op);
+    GRPC_SUBCHANNEL_UNREF(exec_ctx, selected, "pf_broadcast_to_selected");
+  }
   gpr_free(subchannels);
 }
 
@@ -317,13 +364,8 @@ void pf_notify_on_state_change(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
 }
 
 static const grpc_lb_policy_vtable pick_first_lb_policy_vtable = {
-    pf_destroy,
-    pf_shutdown,
-    pf_pick,
-    pf_exit_idle,
-    pf_broadcast,
-    pf_check_connectivity,
-    pf_notify_on_state_change};
+    pf_destroy, pf_shutdown, pf_pick, pf_exit_idle, pf_broadcast,
+    pf_check_connectivity, pf_notify_on_state_change};
 
 static void pick_first_factory_ref(grpc_lb_policy_factory *factory) {}
 
diff --git a/src/core/client_config/lb_policies/round_robin.c b/src/core/client_config/lb_policies/round_robin.c
index 479c376724da3db97db90d64c3f8b99b0e76b4d1..d0b60a0df25f61c8c2a72ee7fecc1c5516c6151e 100644
--- a/src/core/client_config/lb_policies/round_robin.c
+++ b/src/core/client_config/lb_policies/round_robin.c
@@ -487,13 +487,8 @@ static void rr_notify_on_state_change(grpc_exec_ctx *exec_ctx,
 }
 
 static const grpc_lb_policy_vtable round_robin_lb_policy_vtable = {
-    rr_destroy,
-    rr_shutdown,
-    rr_pick,
-    rr_exit_idle,
-    rr_broadcast,
-    rr_check_connectivity,
-    rr_notify_on_state_change};
+    rr_destroy, rr_shutdown, rr_pick, rr_exit_idle, rr_broadcast,
+    rr_check_connectivity, rr_notify_on_state_change};
 
 static void round_robin_factory_ref(grpc_lb_policy_factory *factory) {}
 
diff --git a/src/core/client_config/resolvers/zookeeper_resolver.c b/src/core/client_config/resolvers/zookeeper_resolver.c
index f640a0084adcf6495e91d031475f40056ba906ee..136197d4c64b46053be8e6c3326cf8b103f2f275 100644
--- a/src/core/client_config/resolvers/zookeeper_resolver.c
+++ b/src/core/client_config/resolvers/zookeeper_resolver.c
@@ -45,6 +45,7 @@
 #include "src/core/client_config/resolver_registry.h"
 #include "src/core/iomgr/resolve_address.h"
 #include "src/core/support/string.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/json/json.h"
 
 /** Zookeeper session expiration time in milliseconds */
@@ -487,6 +488,7 @@ static void zookeeper_plugin_init() {
 }
 
 void grpc_zookeeper_register() {
+  GRPC_API_TRACE("grpc_zookeeper_register(void)", 0, ());
   grpc_register_plugin(zookeeper_plugin_init, NULL);
 }
 
diff --git a/src/core/client_config/subchannel.c b/src/core/client_config/subchannel.c
index 740389003a526a6b53694823420fad58221525d6..a2c521a20d9f9c38ff116557c2a85515e654f16e 100644
--- a/src/core/client_config/subchannel.c
+++ b/src/core/client_config/subchannel.c
@@ -153,8 +153,8 @@ static gpr_timespec compute_connect_deadline(grpc_subchannel *c);
 static void subchannel_connected(grpc_exec_ctx *exec_ctx, void *subchannel,
                                  int iomgr_success);
 
-static void subchannel_ref_locked(
-    grpc_subchannel *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+static void subchannel_ref_locked(grpc_subchannel *c
+                                      GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
 static int subchannel_unref_locked(
     grpc_subchannel *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) GRPC_MUST_USE_RESULT;
 static void connection_ref_locked(connection *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
@@ -203,8 +203,8 @@ static void connection_destroy(grpc_exec_ctx *exec_ctx, connection *c) {
   gpr_free(c);
 }
 
-static void connection_ref_locked(
-    connection *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+static void connection_ref_locked(connection *c
+                                      GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
   REF_LOG("CONNECTION", c);
   subchannel_ref_locked(c->subchannel REF_PASS_ARGS);
   ++c->refs;
@@ -227,14 +227,14 @@ static grpc_subchannel *connection_unref_locked(
  * grpc_subchannel implementation
  */
 
-static void subchannel_ref_locked(
-    grpc_subchannel *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+static void subchannel_ref_locked(grpc_subchannel *c
+                                      GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
   REF_LOG("SUBCHANNEL", c);
   ++c->refs;
 }
 
-static int subchannel_unref_locked(
-    grpc_subchannel *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+static int subchannel_unref_locked(grpc_subchannel *c
+                                       GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
   UNREF_LOG("SUBCHANNEL", c);
   return --c->refs == 0;
 }
@@ -413,6 +413,17 @@ void grpc_subchannel_notify_on_state_change(grpc_exec_ctx *exec_ctx,
   }
 }
 
+int grpc_subchannel_state_change_unsubscribe(grpc_exec_ctx *exec_ctx,
+                                             grpc_subchannel *c,
+                                             grpc_closure *subscribed_notify) {
+  int success;
+  gpr_mu_lock(&c->mu);
+  success = grpc_connectivity_state_change_unsubscribe(
+      exec_ctx, &c->state_tracker, subscribed_notify);
+  gpr_mu_unlock(&c->mu);
+  return success;
+}
+
 void grpc_subchannel_process_transport_op(grpc_exec_ctx *exec_ctx,
                                           grpc_subchannel *c,
                                           grpc_transport_op *op) {
@@ -645,11 +656,24 @@ static void on_alarm(grpc_exec_ctx *exec_ctx, void *arg, int iomgr_success) {
     iomgr_success = 0;
   }
   connectivity_state_changed_locked(exec_ctx, c, "alarm");
-  gpr_mu_unlock(&c->mu);
   if (iomgr_success) {
+    gpr_mu_unlock(&c->mu);
     update_reconnect_parameters(c);
     continue_connect(exec_ctx, c);
   } else {
+    waiting_for_connect *w4c;
+    w4c = c->waiting;
+    c->waiting = NULL;
+    gpr_mu_unlock(&c->mu);
+    while (w4c != NULL) {
+      waiting_for_connect *next = w4c->next;
+      grpc_subchannel_del_interested_party(exec_ctx, w4c->subchannel,
+                                           w4c->pollset);
+      w4c->notify->cb(exec_ctx, w4c->notify->cb_arg, 0);
+      GRPC_SUBCHANNEL_UNREF(exec_ctx, w4c->subchannel, "waiting_for_connect");
+      gpr_free(w4c);
+      w4c = next;
+    }
     GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, c->master, "connecting");
     GRPC_SUBCHANNEL_UNREF(exec_ctx, c, "connecting");
   }
@@ -709,8 +733,8 @@ static void connectivity_state_changed_locked(grpc_exec_ctx *exec_ctx,
  * grpc_subchannel_call implementation
  */
 
-void grpc_subchannel_call_ref(
-    grpc_subchannel_call *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+void grpc_subchannel_call_ref(grpc_subchannel_call *c
+                                  GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
   gpr_ref(&c->refs);
 }
 
diff --git a/src/core/client_config/subchannel.h b/src/core/client_config/subchannel.h
index 2af3ce9e56ae98764280406e5b5ece8ab6507a17..86b7fa585134f2206ddafbde6bd041aaf0da9f4b 100644
--- a/src/core/client_config/subchannel.h
+++ b/src/core/client_config/subchannel.h
@@ -98,6 +98,13 @@ void grpc_subchannel_notify_on_state_change(grpc_exec_ctx *exec_ctx,
                                             grpc_connectivity_state *state,
                                             grpc_closure *notify);
 
+/** Remove \a subscribed_notify from the list of closures to be called on a
+ * state change if present, returning 1. Otherwise, nothing is done and return
+ * 0. */
+int grpc_subchannel_state_change_unsubscribe(grpc_exec_ctx *exec_ctx,
+                                             grpc_subchannel *channel,
+                                             grpc_closure *subscribed_notify);
+
 /** express interest in \a channel's activities through \a pollset. */
 void grpc_subchannel_add_interested_party(grpc_exec_ctx *exec_ctx,
                                           grpc_subchannel *channel,
diff --git a/src/core/compression/algorithm.c b/src/core/compression/algorithm.c
index 8adde13b1ec30255a648fe9f6107fe7729e79b95..d55e499f5eac8a07046444763a1515e61b0e8583 100644
--- a/src/core/compression/algorithm.c
+++ b/src/core/compression/algorithm.c
@@ -37,12 +37,19 @@
 #include <grpc/compression.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/surface/api_trace.h"
+
 int grpc_compression_algorithm_parse(const char *name, size_t name_length,
                                      grpc_compression_algorithm *algorithm) {
   /* we use strncmp not only because it's safer (even though in this case it
    * doesn't matter, given that we are comparing against string literals, but
    * because this way we needn't have "name" nil-terminated (useful for slice
    * data, for example) */
+  GRPC_API_TRACE(
+      "grpc_compression_algorithm_parse("
+      "name=%*.*s, name_length=%lu, algorithm=%p)",
+      5, ((int)name_length, (int)name_length, name, (unsigned long)name_length,
+          algorithm));
   if (name_length == 0) {
     return 0;
   }
@@ -60,6 +67,8 @@ int grpc_compression_algorithm_parse(const char *name, size_t name_length,
 
 int grpc_compression_algorithm_name(grpc_compression_algorithm algorithm,
                                     char **name) {
+  GRPC_API_TRACE("grpc_compression_algorithm_parse(algorithm=%d, name=%p)", 2,
+                 ((int)algorithm, name));
   switch (algorithm) {
     case GRPC_COMPRESS_NONE:
       *name = "identity";
@@ -80,6 +89,8 @@ int grpc_compression_algorithm_name(grpc_compression_algorithm algorithm,
  * compression algorithms */
 grpc_compression_algorithm grpc_compression_algorithm_for_level(
     grpc_compression_level level) {
+  GRPC_API_TRACE("grpc_compression_algorithm_for_level(level=%d)", 1,
+                 ((int)level));
   switch (level) {
     case GRPC_COMPRESS_LEVEL_NONE:
       return GRPC_COMPRESS_NONE;
@@ -96,6 +107,8 @@ grpc_compression_algorithm grpc_compression_algorithm_for_level(
 grpc_compression_level grpc_compression_level_for_algorithm(
     grpc_compression_algorithm algorithm) {
   grpc_compression_level clevel;
+  GRPC_API_TRACE("grpc_compression_level_for_algorithm(algorithm=%d)", 1,
+                 ((int)algorithm));
   for (clevel = GRPC_COMPRESS_LEVEL_NONE; clevel < GRPC_COMPRESS_LEVEL_COUNT;
        ++clevel) {
     if (grpc_compression_algorithm_for_level(clevel) == algorithm) {
diff --git a/src/core/iomgr/closure.c b/src/core/iomgr/closure.c
index 326542578923e19105e3336ebde5f2c4507641e9..d91681990f29104d022687c37ce3790e203dd137 100644
--- a/src/core/iomgr/closure.c
+++ b/src/core/iomgr/closure.c
@@ -33,6 +33,8 @@
 
 #include "src/core/iomgr/closure.h"
 
+#include <grpc/support/alloc.h>
+
 void grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb,
                        void *cb_arg) {
   closure->cb = cb;
@@ -69,3 +71,25 @@ void grpc_closure_list_move(grpc_closure_list *src, grpc_closure_list *dst) {
   }
   src->head = src->tail = NULL;
 }
+
+typedef struct {
+  grpc_iomgr_cb_func cb;
+  void *cb_arg;
+  grpc_closure wrapper;
+} wrapped_closure;
+
+static void closure_wrapper(grpc_exec_ctx *exec_ctx, void *arg, int success) {
+  wrapped_closure *wc = arg;
+  grpc_iomgr_cb_func cb = wc->cb;
+  void *cb_arg = wc->cb_arg;
+  gpr_free(wc);
+  cb(exec_ctx, cb_arg, success);
+}
+
+grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg) {
+  wrapped_closure *wc = gpr_malloc(sizeof(*wc));
+  wc->cb = cb;
+  wc->cb_arg = cb_arg;
+  grpc_closure_init(&wc->wrapper, closure_wrapper, wc);
+  return &wc->wrapper;
+}
diff --git a/src/core/iomgr/closure.h b/src/core/iomgr/closure.h
index 982ffa4e1be246a279745f85ab250ee2fee51bef..d812659af0ce914607a4a0e86f6f0544aefdd2c9 100644
--- a/src/core/iomgr/closure.h
+++ b/src/core/iomgr/closure.h
@@ -77,6 +77,9 @@ struct grpc_closure {
 void grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb,
                        void *cb_arg);
 
+/* Create a heap allocated closure: try to avoid except for very rare events */
+grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg);
+
 #define GRPC_CLOSURE_LIST_INIT \
   { NULL, NULL }
 
diff --git a/src/core/iomgr/exec_ctx.c b/src/core/iomgr/exec_ctx.c
index a830a27b0ba01027fa7f4fb7ad0a8e0459210553..f2914d376efc16fe70265a5acbd38399226bf609 100644
--- a/src/core/iomgr/exec_ctx.c
+++ b/src/core/iomgr/exec_ctx.c
@@ -35,16 +35,19 @@
 
 #include <grpc/support/log.h>
 
-void grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) {
+int grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) {
+  int did_something = 0;
   while (!grpc_closure_list_empty(exec_ctx->closure_list)) {
     grpc_closure *c = exec_ctx->closure_list.head;
     exec_ctx->closure_list.head = exec_ctx->closure_list.tail = NULL;
     while (c != NULL) {
       grpc_closure *next = c->next;
+      did_something = 1;
       c->cb(exec_ctx, c->cb_arg, c->success);
       c = next;
     }
   }
+  return did_something;
 }
 
 void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx) {
diff --git a/src/core/iomgr/exec_ctx.h b/src/core/iomgr/exec_ctx.h
index f99aa038c59e95828cdbf779c133c890c9387ba0..43df48809447f63eb0b2b2161518ba9af7323512 100644
--- a/src/core/iomgr/exec_ctx.h
+++ b/src/core/iomgr/exec_ctx.h
@@ -61,8 +61,9 @@ struct grpc_exec_ctx {
   { GRPC_CLOSURE_LIST_INIT }
 
 /** Flush any work that has been enqueued onto this grpc_exec_ctx.
- *  Caller must guarantee that no interfering locks are held. */
-void grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx);
+ *  Caller must guarantee that no interfering locks are held.
+ *  Returns 1 if work was performed, 0 otherwise. */
+int grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx);
 /** Finish any pending work for a grpc_exec_ctx. Must be called before
  *  the instance is destroyed, or work may be lost. */
 void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx);
diff --git a/src/core/iomgr/fd_posix.c b/src/core/iomgr/fd_posix.c
index b48b7f050aaaa11f5c62145734001a04f16b51e7..231bc988a8746dd774d352ce0e3852c7b7f7b2cf 100644
--- a/src/core/iomgr/fd_posix.c
+++ b/src/core/iomgr/fd_posix.c
@@ -45,10 +45,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
-enum descriptor_state {
-  NOT_READY = 0,
-  READY = 1
-}; /* or a pointer to a closure to call */
+#define CLOSURE_NOT_READY ((grpc_closure *)0)
+#define CLOSURE_READY ((grpc_closure *)1)
 
 /* We need to keep a freelist not because of any concerns of malloc performance
  * but instead so that implementations with multiple threads in (for example)
@@ -88,14 +86,13 @@ static grpc_fd *alloc_fd(int fd) {
   gpr_mu_unlock(&fd_freelist_mu);
   if (r == NULL) {
     r = gpr_malloc(sizeof(grpc_fd));
-    gpr_mu_init(&r->set_state_mu);
-    gpr_mu_init(&r->watcher_mu);
+    gpr_mu_init(&r->mu);
   }
 
   gpr_atm_rel_store(&r->refst, 1);
-  gpr_atm_rel_store(&r->readst, NOT_READY);
-  gpr_atm_rel_store(&r->writest, NOT_READY);
-  gpr_atm_rel_store(&r->shutdown, 0);
+  r->shutdown = 0;
+  r->read_closure = CLOSURE_NOT_READY;
+  r->write_closure = CLOSURE_NOT_READY;
   r->fd = fd;
   r->inactive_watcher_root.next = r->inactive_watcher_root.prev =
       &r->inactive_watcher_root;
@@ -107,8 +104,7 @@ static grpc_fd *alloc_fd(int fd) {
 }
 
 static void destroy(grpc_fd *fd) {
-  gpr_mu_destroy(&fd->set_state_mu);
-  gpr_mu_destroy(&fd->watcher_mu);
+  gpr_mu_destroy(&fd->mu);
   gpr_free(fd);
 }
 
@@ -173,39 +169,35 @@ int grpc_fd_is_orphaned(grpc_fd *fd) {
   return (gpr_atm_acq_load(&fd->refst) & 1) == 0;
 }
 
-static void pollset_kick_locked(grpc_pollset *pollset) {
-  gpr_mu_lock(GRPC_POLLSET_MU(pollset));
-  grpc_pollset_kick(pollset, NULL);
-  gpr_mu_unlock(GRPC_POLLSET_MU(pollset));
+static void pollset_kick_locked(grpc_fd_watcher *watcher) {
+  gpr_mu_lock(GRPC_POLLSET_MU(watcher->pollset));
+  GPR_ASSERT(watcher->worker);
+  grpc_pollset_kick_ext(watcher->pollset, watcher->worker,
+                        GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP);
+  gpr_mu_unlock(GRPC_POLLSET_MU(watcher->pollset));
 }
 
 static void maybe_wake_one_watcher_locked(grpc_fd *fd) {
   if (fd->inactive_watcher_root.next != &fd->inactive_watcher_root) {
-    pollset_kick_locked(fd->inactive_watcher_root.next->pollset);
+    pollset_kick_locked(fd->inactive_watcher_root.next);
   } else if (fd->read_watcher) {
-    pollset_kick_locked(fd->read_watcher->pollset);
+    pollset_kick_locked(fd->read_watcher);
   } else if (fd->write_watcher) {
-    pollset_kick_locked(fd->write_watcher->pollset);
+    pollset_kick_locked(fd->write_watcher);
   }
 }
 
-static void maybe_wake_one_watcher(grpc_fd *fd) {
-  gpr_mu_lock(&fd->watcher_mu);
-  maybe_wake_one_watcher_locked(fd);
-  gpr_mu_unlock(&fd->watcher_mu);
-}
-
 static void wake_all_watchers_locked(grpc_fd *fd) {
   grpc_fd_watcher *watcher;
   for (watcher = fd->inactive_watcher_root.next;
        watcher != &fd->inactive_watcher_root; watcher = watcher->next) {
-    pollset_kick_locked(watcher->pollset);
+    pollset_kick_locked(watcher);
   }
   if (fd->read_watcher) {
-    pollset_kick_locked(fd->read_watcher->pollset);
+    pollset_kick_locked(fd->read_watcher);
   }
   if (fd->write_watcher && fd->write_watcher != fd->read_watcher) {
-    pollset_kick_locked(fd->write_watcher->pollset);
+    pollset_kick_locked(fd->write_watcher);
   }
 }
 
@@ -218,7 +210,7 @@ void grpc_fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure *on_done,
                     const char *reason) {
   fd->on_done_closure = on_done;
   shutdown(fd->fd, SHUT_RDWR);
-  gpr_mu_lock(&fd->watcher_mu);
+  gpr_mu_lock(&fd->mu);
   REF_BY(fd, 1, reason); /* remove active status, but keep referenced */
   if (!has_watchers(fd)) {
     fd->closed = 1;
@@ -227,7 +219,7 @@ void grpc_fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure *on_done,
   } else {
     wake_all_watchers_locked(fd);
   }
-  gpr_mu_unlock(&fd->watcher_mu);
+  gpr_mu_unlock(&fd->mu);
   UNREF_BY(fd, 2, reason); /* drop the reference */
 }
 
@@ -247,136 +239,121 @@ void grpc_fd_ref(grpc_fd *fd) { ref_by(fd, 2); }
 void grpc_fd_unref(grpc_fd *fd) { unref_by(fd, 2); }
 #endif
 
-static void notify_on(grpc_exec_ctx *exec_ctx, grpc_fd *fd, gpr_atm *st,
-                      grpc_closure *closure) {
-  switch (gpr_atm_acq_load(st)) {
-    case NOT_READY:
-      /* There is no race if the descriptor is already ready, so we skip
-         the interlocked op in that case.  As long as the app doesn't
-         try to set the same upcall twice (which it shouldn't) then
-         oldval should never be anything other than READY or NOT_READY.  We
-         don't
-         check for user error on the fast path. */
-      if (gpr_atm_rel_cas(st, NOT_READY, (gpr_intptr)closure)) {
-        /* swap was successful -- the closure will run after the next
-           set_ready call.  NOTE: we don't have an ABA problem here,
-           since we should never have concurrent calls to the same
-           notify_on function. */
-        maybe_wake_one_watcher(fd);
-        return;
-      }
-    /* swap was unsuccessful due to an intervening set_ready call.
-       Fall through to the READY code below */
-    case READY:
-      GPR_ASSERT(gpr_atm_no_barrier_load(st) == READY);
-      gpr_atm_rel_store(st, NOT_READY);
-      grpc_exec_ctx_enqueue(exec_ctx, closure,
-                            !gpr_atm_acq_load(&fd->shutdown));
-      return;
-    default: /* WAITING */
-      /* upcallptr was set to a different closure.  This is an error! */
-      gpr_log(GPR_ERROR,
-              "User called a notify_on function with a previous callback still "
-              "pending");
-      abort();
+static void notify_on_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
+                             grpc_closure **st, grpc_closure *closure) {
+  if (*st == CLOSURE_NOT_READY) {
+    /* not ready ==> switch to a waiting state by setting the closure */
+    *st = closure;
+  } else if (*st == CLOSURE_READY) {
+    /* already ready ==> queue the closure to run immediately */
+    *st = CLOSURE_NOT_READY;
+    grpc_exec_ctx_enqueue(exec_ctx, closure, !fd->shutdown);
+    maybe_wake_one_watcher_locked(fd);
+  } else {
+    /* upcallptr was set to a different closure.  This is an error! */
+    gpr_log(GPR_ERROR,
+            "User called a notify_on function with a previous callback still "
+            "pending");
+    abort();
   }
-  gpr_log(GPR_ERROR, "Corrupt memory in &st->state");
-  abort();
 }
 
-static void set_ready_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
-                             gpr_atm *st) {
-  gpr_intptr state = gpr_atm_acq_load(st);
-
-  switch (state) {
-    case READY:
-      /* duplicate ready, ignore */
-      return;
-    case NOT_READY:
-      if (gpr_atm_rel_cas(st, NOT_READY, READY)) {
-        /* swap was successful -- the closure will run after the next
-           notify_on call. */
-        return;
-      }
-      /* swap was unsuccessful due to an intervening set_ready call.
-         Fall through to the WAITING code below */
-      state = gpr_atm_acq_load(st);
-    default: /* waiting */
-      GPR_ASSERT(gpr_atm_no_barrier_load(st) != READY &&
-                 gpr_atm_no_barrier_load(st) != NOT_READY);
-      grpc_exec_ctx_enqueue(exec_ctx, (grpc_closure *)state,
-                            !gpr_atm_acq_load(&fd->shutdown));
-      gpr_atm_rel_store(st, NOT_READY);
-      return;
+/* returns 1 if state becomes not ready */
+static int set_ready_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
+                            grpc_closure **st) {
+  if (*st == CLOSURE_READY) {
+    /* duplicate ready ==> ignore */
+    return 0;
+  } else if (*st == CLOSURE_NOT_READY) {
+    /* not ready, and not waiting ==> flag ready */
+    *st = CLOSURE_READY;
+    return 0;
+  } else {
+    /* waiting ==> queue closure */
+    grpc_exec_ctx_enqueue(exec_ctx, *st, !fd->shutdown);
+    *st = CLOSURE_NOT_READY;
+    return 1;
   }
 }
 
-static void set_ready(grpc_exec_ctx *exec_ctx, grpc_fd *fd, gpr_atm *st) {
+static void set_ready(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure **st) {
   /* only one set_ready can be active at once (but there may be a racing
      notify_on) */
-  gpr_mu_lock(&fd->set_state_mu);
+  gpr_mu_lock(&fd->mu);
   set_ready_locked(exec_ctx, fd, st);
-  gpr_mu_unlock(&fd->set_state_mu);
+  gpr_mu_unlock(&fd->mu);
 }
 
 void grpc_fd_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
-  gpr_mu_lock(&fd->set_state_mu);
+  gpr_mu_lock(&fd->mu);
   GPR_ASSERT(!gpr_atm_no_barrier_load(&fd->shutdown));
-  gpr_atm_rel_store(&fd->shutdown, 1);
-  set_ready_locked(exec_ctx, fd, &fd->readst);
-  set_ready_locked(exec_ctx, fd, &fd->writest);
-  gpr_mu_unlock(&fd->set_state_mu);
+  fd->shutdown = 1;
+  set_ready_locked(exec_ctx, fd, &fd->read_closure);
+  set_ready_locked(exec_ctx, fd, &fd->write_closure);
+  gpr_mu_unlock(&fd->mu);
 }
 
 void grpc_fd_notify_on_read(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
                             grpc_closure *closure) {
-  notify_on(exec_ctx, fd, &fd->readst, closure);
+  gpr_mu_lock(&fd->mu);
+  notify_on_locked(exec_ctx, fd, &fd->read_closure, closure);
+  gpr_mu_unlock(&fd->mu);
 }
 
 void grpc_fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
                              grpc_closure *closure) {
-  notify_on(exec_ctx, fd, &fd->writest, closure);
+  gpr_mu_lock(&fd->mu);
+  notify_on_locked(exec_ctx, fd, &fd->write_closure, closure);
+  gpr_mu_unlock(&fd->mu);
 }
 
 gpr_uint32 grpc_fd_begin_poll(grpc_fd *fd, grpc_pollset *pollset,
-                              gpr_uint32 read_mask, gpr_uint32 write_mask,
-                              grpc_fd_watcher *watcher) {
+                              grpc_pollset_worker *worker, gpr_uint32 read_mask,
+                              gpr_uint32 write_mask, grpc_fd_watcher *watcher) {
   gpr_uint32 mask = 0;
+  grpc_closure *cur;
+  int requested;
   /* keep track of pollers that have requested our events, in case they change
    */
   GRPC_FD_REF(fd, "poll");
 
-  gpr_mu_lock(&fd->watcher_mu);
+  gpr_mu_lock(&fd->mu);
+
   /* if we are shutdown, then don't add to the watcher set */
   if (gpr_atm_no_barrier_load(&fd->shutdown)) {
     watcher->fd = NULL;
     watcher->pollset = NULL;
-    gpr_mu_unlock(&fd->watcher_mu);
+    watcher->worker = NULL;
+    gpr_mu_unlock(&fd->mu);
     GRPC_FD_UNREF(fd, "poll");
     return 0;
   }
+
   /* if there is nobody polling for read, but we need to, then start doing so */
-  if (read_mask && !fd->read_watcher &&
-      (gpr_uintptr)gpr_atm_acq_load(&fd->readst) > READY) {
+  cur = fd->read_closure;
+  requested = cur != CLOSURE_READY;
+  if (read_mask && fd->read_watcher == NULL && requested) {
     fd->read_watcher = watcher;
     mask |= read_mask;
   }
   /* if there is nobody polling for write, but we need to, then start doing so
    */
-  if (write_mask && !fd->write_watcher &&
-      (gpr_uintptr)gpr_atm_acq_load(&fd->writest) > READY) {
+  cur = fd->write_closure;
+  requested = cur != CLOSURE_READY;
+  if (write_mask && fd->write_watcher == NULL && requested) {
     fd->write_watcher = watcher;
     mask |= write_mask;
   }
   /* if not polling, remember this watcher in case we need someone to later */
-  if (mask == 0) {
+  if (mask == 0 && worker != NULL) {
     watcher->next = &fd->inactive_watcher_root;
     watcher->prev = watcher->next->prev;
     watcher->next->prev = watcher->prev->next = watcher;
   }
   watcher->pollset = pollset;
+  watcher->worker = worker;
   watcher->fd = fd;
-  gpr_mu_unlock(&fd->watcher_mu);
+  gpr_mu_unlock(&fd->mu);
 
   return mask;
 }
@@ -391,24 +368,39 @@ void grpc_fd_end_poll(grpc_exec_ctx *exec_ctx, grpc_fd_watcher *watcher,
     return;
   }
 
-  gpr_mu_lock(&fd->watcher_mu);
+  gpr_mu_lock(&fd->mu);
+
   if (watcher == fd->read_watcher) {
     /* remove read watcher, kick if we still need a read */
     was_polling = 1;
-    kick = kick || !got_read;
+    if (!got_read) {
+      kick = 1;
+    }
     fd->read_watcher = NULL;
   }
   if (watcher == fd->write_watcher) {
     /* remove write watcher, kick if we still need a write */
     was_polling = 1;
-    kick = kick || !got_write;
+    if (!got_write) {
+      kick = 1;
+    }
     fd->write_watcher = NULL;
   }
-  if (!was_polling) {
+  if (!was_polling && watcher->worker != NULL) {
     /* remove from inactive list */
     watcher->next->prev = watcher->prev;
     watcher->prev->next = watcher->next;
   }
+  if (got_read) {
+    if (set_ready_locked(exec_ctx, fd, &fd->read_closure)) {
+      kick = 1;
+    }
+  }
+  if (got_write) {
+    if (set_ready_locked(exec_ctx, fd, &fd->write_closure)) {
+      kick = 1;
+    }
+  }
   if (kick) {
     maybe_wake_one_watcher_locked(fd);
   }
@@ -417,17 +409,17 @@ void grpc_fd_end_poll(grpc_exec_ctx *exec_ctx, grpc_fd_watcher *watcher,
     close(fd->fd);
     grpc_exec_ctx_enqueue(exec_ctx, fd->on_done_closure, 1);
   }
-  gpr_mu_unlock(&fd->watcher_mu);
+  gpr_mu_unlock(&fd->mu);
 
   GRPC_FD_UNREF(fd, "poll");
 }
 
 void grpc_fd_become_readable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
-  set_ready(exec_ctx, fd, &fd->readst);
+  set_ready(exec_ctx, fd, &fd->read_closure);
 }
 
 void grpc_fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
-  set_ready(exec_ctx, fd, &fd->writest);
+  set_ready(exec_ctx, fd, &fd->write_closure);
 }
 
 #endif
diff --git a/src/core/iomgr/fd_posix.h b/src/core/iomgr/fd_posix.h
index 089aa4d7175641f6c04ce3360c3b87e0a0c53e5c..dc917ebbc0ff195ff36569a85b8e32c67ea14985 100644
--- a/src/core/iomgr/fd_posix.h
+++ b/src/core/iomgr/fd_posix.h
@@ -46,6 +46,7 @@ typedef struct grpc_fd_watcher {
   struct grpc_fd_watcher *next;
   struct grpc_fd_watcher *prev;
   grpc_pollset *pollset;
+  grpc_pollset_worker *worker;
   grpc_fd *fd;
 } grpc_fd_watcher;
 
@@ -58,8 +59,8 @@ struct grpc_fd {
      and just unref by 1 when we're ready to flag the object as orphaned */
   gpr_atm refst;
 
-  gpr_mu set_state_mu;
-  gpr_atm shutdown;
+  gpr_mu mu;
+  int shutdown;
   int closed;
 
   /* The watcher list.
@@ -84,18 +85,16 @@ struct grpc_fd {
      If at a later time there becomes need of a poller to poll, one of
      the inactive pollers may be kicked out of their poll loops to take
      that responsibility. */
-  gpr_mu watcher_mu;
   grpc_fd_watcher inactive_watcher_root;
   grpc_fd_watcher *read_watcher;
   grpc_fd_watcher *write_watcher;
 
-  gpr_atm readst;
-  gpr_atm writest;
+  grpc_closure *read_closure;
+  grpc_closure *write_closure;
 
   struct grpc_fd *freelist_next;
 
   grpc_closure *on_done_closure;
-  grpc_closure *shutdown_closures[2];
 
   grpc_iomgr_object iomgr_object;
 };
@@ -126,10 +125,12 @@ void grpc_fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure *on_done,
    fd's current interest (such as epoll) do not need to call this function.
    MUST NOT be called with a pollset lock taken */
 gpr_uint32 grpc_fd_begin_poll(grpc_fd *fd, grpc_pollset *pollset,
-                              gpr_uint32 read_mask, gpr_uint32 write_mask,
-                              grpc_fd_watcher *rec);
+                              grpc_pollset_worker *worker, gpr_uint32 read_mask,
+                              gpr_uint32 write_mask, grpc_fd_watcher *rec);
 /* Complete polling previously started with grpc_fd_begin_poll
-   MUST NOT be called with a pollset lock taken */
+   MUST NOT be called with a pollset lock taken
+   if got_read or got_write are 1, also does the become_{readable,writable} as
+   appropriate. */
 void grpc_fd_end_poll(grpc_exec_ctx *exec_ctx, grpc_fd_watcher *rec,
                       int got_read, int got_write);
 
diff --git a/src/core/iomgr/iocp_windows.c b/src/core/iomgr/iocp_windows.c
index c2f62a41b83e21d2e7da19e0f443f74ef612ffc4..cebd86392402a3fd9cf5636f6b5cd283aa3b051e 100644
--- a/src/core/iomgr/iocp_windows.c
+++ b/src/core/iomgr/iocp_windows.c
@@ -50,13 +50,28 @@
 static ULONG g_iocp_kick_token;
 static OVERLAPPED g_iocp_custom_overlap;
 
-static gpr_event g_shutdown_iocp;
-static gpr_event g_iocp_done;
 static gpr_atm g_custom_events = 0;
 
 static HANDLE g_iocp;
 
-static void do_iocp_work(grpc_exec_ctx *exec_ctx) {
+static DWORD deadline_to_millis_timeout(gpr_timespec deadline,
+                                        gpr_timespec now) {
+  gpr_timespec timeout;
+  static const int max_spin_polling_us = 10;
+  if (gpr_time_cmp(deadline, gpr_inf_future(deadline.clock_type)) == 0) {
+    return INFINITE;
+  }
+  if (gpr_time_cmp(deadline, gpr_time_add(now, gpr_time_from_micros(
+                                                   max_spin_polling_us,
+                                                   GPR_TIMESPAN))) <= 0) {
+    return 0;
+  }
+  timeout = gpr_time_sub(deadline, now);
+  return gpr_time_to_millis(gpr_time_add(
+      timeout, gpr_time_from_nanos(GPR_NS_PER_MS - 1, GPR_TIMESPAN)));
+}
+
+void grpc_iocp_work(grpc_exec_ctx *exec_ctx, gpr_timespec deadline) {
   BOOL success;
   DWORD bytes = 0;
   DWORD flags = 0;
@@ -65,11 +80,12 @@ static void do_iocp_work(grpc_exec_ctx *exec_ctx) {
   grpc_winsocket *socket;
   grpc_winsocket_callback_info *info;
   grpc_closure *closure = NULL;
-  success = GetQueuedCompletionStatus(g_iocp, &bytes, &completion_key,
-                                      &overlapped, INFINITE);
-  /* success = 0 and overlapped = NULL means the deadline got attained.
-     Which is impossible. since our wait time is +inf */
-  GPR_ASSERT(success || overlapped);
+  success = GetQueuedCompletionStatus(
+      g_iocp, &bytes, &completion_key, &overlapped,
+      deadline_to_millis_timeout(deadline, gpr_now(deadline.clock_type)));
+  if (success == 0 && overlapped == NULL) {
+    return;
+  }
   GPR_ASSERT(completion_key && overlapped);
   if (overlapped == &g_iocp_custom_overlap) {
     gpr_atm_full_fetch_add(&g_custom_events, -1);
@@ -104,34 +120,13 @@ static void do_iocp_work(grpc_exec_ctx *exec_ctx) {
     info->has_pending_iocp = 1;
   }
   gpr_mu_unlock(&socket->state_mu);
-  if (closure) {
-    closure->cb(exec_ctx, closure->cb_arg, 1);
-  }
-}
-
-static void iocp_loop(void *p) {
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-
-  while (gpr_atm_acq_load(&g_custom_events) ||
-         !gpr_event_get(&g_shutdown_iocp)) {
-    do_iocp_work(&exec_ctx);
-    grpc_exec_ctx_flush(&exec_ctx);
-  }
-  grpc_exec_ctx_finish(&exec_ctx);
-
-  gpr_event_set(&g_iocp_done, (void *)1);
+  grpc_exec_ctx_enqueue(exec_ctx, closure, 1);
 }
 
 void grpc_iocp_init(void) {
-  gpr_thd_id id;
-
   g_iocp =
       CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, (ULONG_PTR)NULL, 0);
   GPR_ASSERT(g_iocp);
-
-  gpr_event_init(&g_iocp_done);
-  gpr_event_init(&g_shutdown_iocp);
-  gpr_thd_new(&id, iocp_loop, NULL, NULL);
 }
 
 void grpc_iocp_kick(void) {
@@ -143,13 +138,22 @@ void grpc_iocp_kick(void) {
   GPR_ASSERT(success);
 }
 
+void grpc_iocp_flush(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
+  do {
+    grpc_iocp_work(&exec_ctx, gpr_inf_past(GPR_CLOCK_MONOTONIC));
+  } while (grpc_exec_ctx_flush(&exec_ctx));
+}
+
 void grpc_iocp_shutdown(void) {
-  BOOL success;
-  gpr_event_set(&g_shutdown_iocp, (void *)1);
-  grpc_iocp_kick();
-  gpr_event_wait(&g_iocp_done, gpr_inf_future(GPR_CLOCK_REALTIME));
-  success = CloseHandle(g_iocp);
-  GPR_ASSERT(success);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  while (gpr_atm_acq_load(&g_custom_events)) {
+    grpc_iocp_work(&exec_ctx, gpr_inf_future(GPR_CLOCK_MONOTONIC));
+    grpc_exec_ctx_flush(&exec_ctx);
+  }
+  grpc_exec_ctx_finish(&exec_ctx);
+  GPR_ASSERT(CloseHandle(g_iocp));
 }
 
 void grpc_iocp_add_socket(grpc_winsocket *socket) {
diff --git a/src/core/iomgr/iocp_windows.h b/src/core/iomgr/iocp_windows.h
index b0209e04e331366ad7e4cdf1449db49c0036166c..75f3ba84770fca354814d332b437a83f2ae5e511 100644
--- a/src/core/iomgr/iocp_windows.h
+++ b/src/core/iomgr/iocp_windows.h
@@ -38,8 +38,10 @@
 
 #include "src/core/iomgr/socket_windows.h"
 
+void grpc_iocp_work(grpc_exec_ctx *exec_ctx, gpr_timespec deadline);
 void grpc_iocp_init(void);
 void grpc_iocp_kick(void);
+void grpc_iocp_flush(void);
 void grpc_iocp_shutdown(void);
 void grpc_iocp_add_socket(grpc_winsocket *);
 
diff --git a/src/core/iomgr/iomgr.c b/src/core/iomgr/iomgr.c
index 612419b70e49d7de27c9bf8d9b3f5492ceea916a..e61fc32925fd9f20cebda6e35a2c7873fca85ebb 100644
--- a/src/core/iomgr/iomgr.c
+++ b/src/core/iomgr/iomgr.c
@@ -51,13 +51,6 @@ static gpr_cv g_rcv;
 static int g_shutdown;
 static grpc_iomgr_object g_root_object;
 
-void grpc_kick_poller(void) {
-  /* Empty. The background callback executor polls periodically. The activity
-   * the kicker is trying to draw the executor's attention to will be picked up
-   * either by one of the periodic wakeups or by one of the polling application
-   * threads. */
-}
-
 void grpc_iomgr_init(void) {
   g_shutdown = 0;
   gpr_mu_init(&g_mu);
@@ -66,6 +59,7 @@ void grpc_iomgr_init(void) {
   g_root_object.next = g_root_object.prev = &g_root_object;
   g_root_object.name = "root";
   grpc_iomgr_platform_init();
+  grpc_pollset_global_init();
 }
 
 static size_t count_objects(void) {
@@ -90,6 +84,8 @@ void grpc_iomgr_shutdown(void) {
   gpr_timespec last_warning_time = gpr_now(GPR_CLOCK_REALTIME);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  grpc_iomgr_platform_flush();
+
   gpr_mu_lock(&g_mu);
   g_shutdown = 1;
   while (g_root_object.next != &g_root_object) {
@@ -135,6 +131,7 @@ void grpc_iomgr_shutdown(void) {
   gpr_mu_lock(&g_mu);
   gpr_mu_unlock(&g_mu);
 
+  grpc_pollset_global_shutdown();
   grpc_iomgr_platform_shutdown();
   gpr_mu_destroy(&g_mu);
   gpr_cv_destroy(&g_rcv);
diff --git a/src/core/iomgr/iomgr_internal.h b/src/core/iomgr/iomgr_internal.h
index f266732c96b636e61276dd12edba5b3fae79c9c2..e372c18e8a070cbba634bcea67ea7d80110b461c 100644
--- a/src/core/iomgr/iomgr_internal.h
+++ b/src/core/iomgr/iomgr_internal.h
@@ -43,10 +43,16 @@ typedef struct grpc_iomgr_object {
   struct grpc_iomgr_object *prev;
 } grpc_iomgr_object;
 
+void grpc_pollset_global_init(void);
+void grpc_pollset_global_shutdown(void);
+
 void grpc_iomgr_register_object(grpc_iomgr_object *obj, const char *name);
 void grpc_iomgr_unregister_object(grpc_iomgr_object *obj);
 
 void grpc_iomgr_platform_init(void);
+/** flush any globally queued work from iomgr */
+void grpc_iomgr_platform_flush(void);
+/** tear down all platform specific global iomgr structures */
 void grpc_iomgr_platform_shutdown(void);
 
 #endif /* GRPC_INTERNAL_CORE_IOMGR_IOMGR_INTERNAL_H */
diff --git a/src/core/iomgr/iomgr_posix.c b/src/core/iomgr/iomgr_posix.c
index 2425e599415d292cbc47331f6a39b5c6526f7f00..fecb7b9760aacd280a5c1c583d7e964be582d42d 100644
--- a/src/core/iomgr/iomgr_posix.c
+++ b/src/core/iomgr/iomgr_posix.c
@@ -42,13 +42,11 @@
 
 void grpc_iomgr_platform_init(void) {
   grpc_fd_global_init();
-  grpc_pollset_global_init();
   grpc_register_tracer("tcp", &grpc_tcp_trace);
 }
 
-void grpc_iomgr_platform_shutdown(void) {
-  grpc_pollset_global_shutdown();
-  grpc_fd_global_shutdown();
-}
+void grpc_iomgr_platform_flush(void) {}
+
+void grpc_iomgr_platform_shutdown(void) { grpc_fd_global_shutdown(); }
 
 #endif /* GRPC_POSIX_SOCKET */
diff --git a/src/core/iomgr/iomgr_posix.h b/src/core/iomgr/iomgr_posix.h
index 716fedb63683bda32207cddaff44e73f6033ffd7..068a5c6d7cf17a43f50595e25094e91f2bcd85ee 100644
--- a/src/core/iomgr/iomgr_posix.h
+++ b/src/core/iomgr/iomgr_posix.h
@@ -36,7 +36,4 @@
 
 #include "src/core/iomgr/iomgr_internal.h"
 
-void grpc_pollset_global_init(void);
-void grpc_pollset_global_shutdown(void);
-
 #endif /* GRPC_INTERNAL_CORE_IOMGR_IOMGR_POSIX_H */
diff --git a/src/core/iomgr/iomgr_windows.c b/src/core/iomgr/iomgr_windows.c
index b49cb87e97b00bbb50ffc92eda3fe698b6db1f5f..14775516bb1d6c1be0c248fc4c8331e77201de76 100644
--- a/src/core/iomgr/iomgr_windows.c
+++ b/src/core/iomgr/iomgr_windows.c
@@ -63,6 +63,8 @@ void grpc_iomgr_platform_init(void) {
   grpc_iocp_init();
 }
 
+void grpc_iomgr_platform_flush(void) { grpc_iocp_flush(); }
+
 void grpc_iomgr_platform_shutdown(void) {
   grpc_iocp_shutdown();
   winsock_shutdown();
diff --git a/src/core/iomgr/pollset_multipoller_with_epoll.c b/src/core/iomgr/pollset_multipoller_with_epoll.c
index a4293eb4a40a70500903434e8aba7043ecd6a691..ba9ba73f9d5220494f4fe41f0d1e2ac7b853afce 100644
--- a/src/core/iomgr/pollset_multipoller_with_epoll.c
+++ b/src/core/iomgr/pollset_multipoller_with_epoll.c
@@ -72,7 +72,7 @@ static void finally_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   /* We pretend to be polling whilst adding an fd to keep the fd from being
      closed during the add. This may result in a spurious wakeup being assigned
      to this pollset whilst adding, but that should be benign. */
-  GPR_ASSERT(grpc_fd_begin_poll(fd, pollset, 0, 0, &watcher) == 0);
+  GPR_ASSERT(grpc_fd_begin_poll(fd, pollset, NULL, 0, 0, &watcher) == 0);
   if (watcher.fd != NULL) {
     ev.events = (uint32_t)(EPOLLIN | EPOLLOUT | EPOLLET);
     ev.data.ptr = fd;
@@ -180,6 +180,8 @@ static void multipoll_with_epoll_pollset_maybe_work_and_unlock(
   pfds[1].events = POLLIN;
   pfds[1].revents = 0;
 
+  /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
+     even going into the blocking annotation if possible */
   GRPC_SCHEDULING_START_BLOCKING_REGION;
   poll_rv = grpc_poll_function(pfds, 2, timeout_ms);
   GRPC_SCHEDULING_END_BLOCKING_REGION;
@@ -196,7 +198,7 @@ static void multipoll_with_epoll_pollset_maybe_work_and_unlock(
     }
     if (pfds[1].revents) {
       do {
-	/* The following epoll_wait never blocks; it has a timeout of 0 */
+        /* The following epoll_wait never blocks; it has a timeout of 0 */
         ep_rv = epoll_wait(h->epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, 0);
         if (ep_rv < 0) {
           if (errno != EINTR) {
@@ -209,13 +211,17 @@ static void multipoll_with_epoll_pollset_maybe_work_and_unlock(
             /* TODO(klempner): We might want to consider making err and pri
              * separate events */
             int cancel = ep_ev[i].events & (EPOLLERR | EPOLLHUP);
-            int read = ep_ev[i].events & (EPOLLIN | EPOLLPRI);
-            int write = ep_ev[i].events & EPOLLOUT;
-            if (read || cancel) {
-              grpc_fd_become_readable(exec_ctx, fd);
-            }
-            if (write || cancel) {
-              grpc_fd_become_writable(exec_ctx, fd);
+            int read_ev = ep_ev[i].events & (EPOLLIN | EPOLLPRI);
+            int write_ev = ep_ev[i].events & EPOLLOUT;
+            if (fd == NULL) {
+              grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
+            } else {
+              if (read_ev || cancel) {
+                grpc_fd_become_readable(exec_ctx, fd);
+              }
+              if (write_ev || cancel) {
+                grpc_fd_become_writable(exec_ctx, fd);
+              }
             }
           }
         }
@@ -244,6 +250,8 @@ static void epoll_become_multipoller(grpc_exec_ctx *exec_ctx,
                                      size_t nfds) {
   size_t i;
   pollset_hdr *h = gpr_malloc(sizeof(pollset_hdr));
+  struct epoll_event ev;
+  int err;
 
   pollset->vtable = &multipoll_with_epoll_pollset;
   pollset->data.ptr = h;
@@ -253,6 +261,17 @@ static void epoll_become_multipoller(grpc_exec_ctx *exec_ctx,
     gpr_log(GPR_ERROR, "epoll_create1 failed: %s", strerror(errno));
     abort();
   }
+
+  ev.events = (uint32_t)(EPOLLIN | EPOLLET);
+  ev.data.ptr = NULL;
+  err = epoll_ctl(h->epoll_fd, EPOLL_CTL_ADD,
+                  GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd), &ev);
+  if (err < 0) {
+    gpr_log(GPR_ERROR, "epoll_ctl add for %d failed: %s",
+            GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd),
+            strerror(errno));
+  }
+
   for (i = 0; i < nfds; i++) {
     multipoll_with_epoll_pollset_add_fd(exec_ctx, pollset, fds[i], 0);
   }
diff --git a/src/core/iomgr/pollset_multipoller_with_poll_posix.c b/src/core/iomgr/pollset_multipoller_with_poll_posix.c
index 44031b8ef66e3b5aeaa7351000dba8eb4436a1e2..faa6c1449133bbafb507a69f3a56b37e8155d638 100644
--- a/src/core/iomgr/pollset_multipoller_with_poll_posix.c
+++ b/src/core/iomgr/pollset_multipoller_with_poll_posix.c
@@ -102,6 +102,9 @@ static void multipoll_with_poll_pollset_del_fd(grpc_exec_ctx *exec_ctx,
 static void multipoll_with_poll_pollset_maybe_work_and_unlock(
     grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, grpc_pollset_worker *worker,
     gpr_timespec deadline, gpr_timespec now) {
+#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR)
+#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR)
+
   int timeout;
   int r;
   size_t i, j, fd_count;
@@ -114,13 +117,16 @@ static void multipoll_with_poll_pollset_maybe_work_and_unlock(
   h = pollset->data.ptr;
   timeout = grpc_poll_deadline_to_millis_timeout(deadline, now);
   /* TODO(ctiller): perform just one malloc here if we exceed the inline case */
-  pfds = gpr_malloc(sizeof(*pfds) * (h->fd_count + 1));
-  watchers = gpr_malloc(sizeof(*watchers) * (h->fd_count + 1));
+  pfds = gpr_malloc(sizeof(*pfds) * (h->fd_count + 2));
+  watchers = gpr_malloc(sizeof(*watchers) * (h->fd_count + 2));
   fd_count = 0;
-  pfd_count = 1;
-  pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd);
+  pfd_count = 2;
+  pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd);
   pfds[0].events = POLLIN;
-  pfds[0].revents = POLLOUT;
+  pfds[0].revents = 0;
+  pfds[1].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd);
+  pfds[1].events = POLLIN;
+  pfds[1].revents = 0;
   for (i = 0; i < h->fd_count; i++) {
     int remove = grpc_fd_is_orphaned(h->fds[i]);
     for (j = 0; !remove && j < h->del_count; j++) {
@@ -143,40 +149,40 @@ static void multipoll_with_poll_pollset_maybe_work_and_unlock(
   h->fd_count = fd_count;
   gpr_mu_unlock(&pollset->mu);
 
-  for (i = 1; i < pfd_count; i++) {
-    pfds[i].events = (short)grpc_fd_begin_poll(watchers[i].fd, pollset, POLLIN,
-                                               POLLOUT, &watchers[i]);
+  for (i = 2; i < pfd_count; i++) {
+    pfds[i].events = (short)grpc_fd_begin_poll(watchers[i].fd, pollset, worker,
+                                               POLLIN, POLLOUT, &watchers[i]);
   }
 
+  /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
+     even going into the blocking annotation if possible */
   GRPC_SCHEDULING_START_BLOCKING_REGION;
   r = grpc_poll_function(pfds, pfd_count, timeout);
   GRPC_SCHEDULING_END_BLOCKING_REGION;
 
-  for (i = 1; i < pfd_count; i++) {
-    grpc_fd_end_poll(exec_ctx, &watchers[i], pfds[i].revents & POLLIN,
-                     pfds[i].revents & POLLOUT);
-  }
-
   if (r < 0) {
-    if (errno != EINTR) {
-      gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
+    gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
+    for (i = 2; i < pfd_count; i++) {
+      grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
     }
   } else if (r == 0) {
-    /* do nothing */
+    for (i = 2; i < pfd_count; i++) {
+      grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
+    }
   } else {
-    if (pfds[0].revents & POLLIN) {
+    if (pfds[0].revents & POLLIN_CHECK) {
+      grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
+    }
+    if (pfds[1].revents & POLLIN_CHECK) {
       grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd);
     }
-    for (i = 1; i < pfd_count; i++) {
+    for (i = 2; i < pfd_count; i++) {
       if (watchers[i].fd == NULL) {
+        grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
         continue;
       }
-      if (pfds[i].revents & (POLLIN | POLLHUP | POLLERR)) {
-        grpc_fd_become_readable(exec_ctx, watchers[i].fd);
-      }
-      if (pfds[i].revents & (POLLOUT | POLLHUP | POLLERR)) {
-        grpc_fd_become_writable(exec_ctx, watchers[i].fd);
-      }
+      grpc_fd_end_poll(exec_ctx, &watchers[i], pfds[i].revents & POLLIN_CHECK,
+                       pfds[i].revents & POLLOUT_CHECK);
     }
   }
 
diff --git a/src/core/iomgr/pollset_posix.c b/src/core/iomgr/pollset_posix.c
index e80963e0ea8b323f6f92e4b1313b24e661ee6489..d056866d13de5aa25ee1eb09e45f906060c8a9bd 100644
--- a/src/core/iomgr/pollset_posix.c
+++ b/src/core/iomgr/pollset_posix.c
@@ -57,8 +57,16 @@
 GPR_TLS_DECL(g_current_thread_poller);
 GPR_TLS_DECL(g_current_thread_worker);
 
+/** Default poll() function - a pointer so that it can be overridden by some
+ *  tests */
 grpc_poll_function_type grpc_poll_function = poll;
 
+/** The alarm system needs to be able to wakeup 'some poller' sometimes
+ *  (specifically when a new alarm needs to be triggered earlier than the next
+ *  alarm 'epoch').
+ *  This wakeup_fd gives us something to alert on when such a case occurs. */
+grpc_wakeup_fd grpc_global_wakeup_fd;
+
 static void remove_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
   worker->prev->next = worker->next;
   worker->next->prev = worker->prev;
@@ -90,45 +98,81 @@ static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
   worker->prev->next = worker->next->prev = worker;
 }
 
-void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) {
+void grpc_pollset_kick_ext(grpc_pollset *p,
+                           grpc_pollset_worker *specific_worker,
+                           gpr_uint32 flags) {
   /* pollset->mu already held */
   if (specific_worker != NULL) {
     if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
+      GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
       for (specific_worker = p->root_worker.next;
            specific_worker != &p->root_worker;
            specific_worker = specific_worker->next) {
         grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd);
       }
       p->kicked_without_pollers = 1;
+      return;
     } else if (gpr_tls_get(&g_current_thread_worker) !=
                (gpr_intptr)specific_worker) {
+      if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
+        specific_worker->reevaluate_polling_on_wakeup = 1;
+      }
+      grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd);
+      return;
+    } else if ((flags & GRPC_POLLSET_CAN_KICK_SELF) != 0) {
+      if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
+        specific_worker->reevaluate_polling_on_wakeup = 1;
+      }
       grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd);
+      return;
     }
   } else if (gpr_tls_get(&g_current_thread_poller) != (gpr_intptr)p) {
+    GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
     specific_worker = pop_front_worker(p);
     if (specific_worker != NULL) {
+      if (gpr_tls_get(&g_current_thread_worker) ==
+          (gpr_intptr)specific_worker) {
+        push_back_worker(p, specific_worker);
+        specific_worker = pop_front_worker(p);
+        if ((flags & GRPC_POLLSET_CAN_KICK_SELF) == 0 &&
+            gpr_tls_get(&g_current_thread_worker) ==
+                (gpr_intptr)specific_worker) {
+          push_back_worker(p, specific_worker);
+          return;
+        }
+      }
       push_back_worker(p, specific_worker);
       grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd);
+      return;
     } else {
       p->kicked_without_pollers = 1;
+      return;
     }
   }
 }
 
+void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) {
+  grpc_pollset_kick_ext(p, specific_worker, 0);
+}
+
 /* global state management */
 
 void grpc_pollset_global_init(void) {
   gpr_tls_init(&g_current_thread_poller);
   gpr_tls_init(&g_current_thread_worker);
   grpc_wakeup_fd_global_init();
+  grpc_wakeup_fd_init(&grpc_global_wakeup_fd);
 }
 
 void grpc_pollset_global_shutdown(void) {
+  grpc_wakeup_fd_destroy(&grpc_global_wakeup_fd);
+  grpc_wakeup_fd_global_destroy();
   gpr_tls_destroy(&g_current_thread_poller);
   gpr_tls_destroy(&g_current_thread_worker);
-  grpc_wakeup_fd_global_destroy();
 }
 
+void grpc_kick_poller(void) { grpc_wakeup_fd_wakeup(&grpc_global_wakeup_fd); }
+
 /* main interface */
 
 static void become_basic_pollset(grpc_pollset *pollset, grpc_fd *fd_or_null);
@@ -183,50 +227,88 @@ void grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   /* pollset->mu already held */
   int added_worker = 0;
   int locked = 1;
+  int queued_work = 0;
+  int keep_polling = 0;
   /* this must happen before we (potentially) drop pollset->mu */
   worker->next = worker->prev = NULL;
+  worker->reevaluate_polling_on_wakeup = 0;
   /* TODO(ctiller): pool these */
   grpc_wakeup_fd_init(&worker->wakeup_fd);
+  /* If there's work waiting for the pollset to be idle, and the
+     pollset is idle, then do that work */
   if (!grpc_pollset_has_workers(pollset) &&
       !grpc_closure_list_empty(pollset->idle_jobs)) {
     grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs);
     goto done;
   }
+  /* Check alarms - these are a global resource so we just ping
+     each time through on every pollset.
+     May update deadline to ensure timely wakeups.
+     TODO(ctiller): can this work be localized? */
   if (grpc_alarm_check(exec_ctx, now, &deadline)) {
+    gpr_mu_unlock(&pollset->mu);
+    locked = 0;
     goto done;
   }
+  /* If we're shutting down then we don't execute any extended work */
   if (pollset->shutting_down) {
     goto done;
   }
+  /* Give do_promote priority so we don't starve it out */
   if (pollset->in_flight_cbs) {
-    /* Give do_promote priority so we don't starve it out */
     gpr_mu_unlock(&pollset->mu);
     locked = 0;
     goto done;
   }
-  if (!pollset->kicked_without_pollers) {
-    push_front_worker(pollset, worker);
-    added_worker = 1;
-    gpr_tls_set(&g_current_thread_poller, (gpr_intptr)pollset);
-    gpr_tls_set(&g_current_thread_worker, (gpr_intptr)worker);
-    pollset->vtable->maybe_work_and_unlock(exec_ctx, pollset, worker, deadline,
-                                           now);
-    locked = 0;
-    gpr_tls_set(&g_current_thread_poller, 0);
-    gpr_tls_set(&g_current_thread_worker, 0);
-  } else {
-    pollset->kicked_without_pollers = 0;
-  }
-done:
-  if (!locked) {
-    grpc_exec_ctx_flush(exec_ctx);
-    gpr_mu_lock(&pollset->mu);
-    locked = 1;
+  /* Start polling, and keep doing so while we're being asked to
+     re-evaluate our pollers (this allows poll() based pollers to
+     ensure they don't miss wakeups) */
+  keep_polling = 1;
+  while (keep_polling) {
+    keep_polling = 0;
+    if (!pollset->kicked_without_pollers) {
+      if (!added_worker) {
+        push_front_worker(pollset, worker);
+        added_worker = 1;
+      }
+      gpr_tls_set(&g_current_thread_poller, (gpr_intptr)pollset);
+      gpr_tls_set(&g_current_thread_worker, (gpr_intptr)worker);
+      pollset->vtable->maybe_work_and_unlock(exec_ctx, pollset, worker,
+                                             deadline, now);
+      locked = 0;
+      gpr_tls_set(&g_current_thread_poller, 0);
+      gpr_tls_set(&g_current_thread_worker, 0);
+    } else {
+      pollset->kicked_without_pollers = 0;
+    }
+  /* Finished execution - start cleaning up.
+     Note that we may arrive here from outside the enclosing while() loop.
+     In that case we won't loop though as we haven't added worker to the
+     worker list, which means nobody could ask us to re-evaluate polling). */
+  done:
+    if (!locked) {
+      queued_work |= grpc_exec_ctx_flush(exec_ctx);
+      gpr_mu_lock(&pollset->mu);
+      locked = 1;
+    }
+    /* If we're forced to re-evaluate polling (via grpc_pollset_kick with
+       GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) then we land here and force
+       a loop */
+    if (worker->reevaluate_polling_on_wakeup) {
+      worker->reevaluate_polling_on_wakeup = 0;
+      pollset->kicked_without_pollers = 0;
+      if (queued_work) {
+        /* If there's queued work on the list, then set the deadline to be
+           immediate so we get back out of the polling loop quickly */
+        deadline = gpr_inf_past(GPR_CLOCK_MONOTONIC);
+      }
+      keep_polling = 1;
+    }
   }
-  grpc_wakeup_fd_destroy(&worker->wakeup_fd);
   if (added_worker) {
     remove_worker(pollset, worker);
   }
+  grpc_wakeup_fd_destroy(&worker->wakeup_fd);
   if (pollset->shutting_down) {
     if (grpc_pollset_has_workers(pollset)) {
       grpc_pollset_kick(pollset, NULL);
@@ -294,7 +376,7 @@ int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline,
   }
   timeout = gpr_time_sub(deadline, now);
   return gpr_time_to_millis(gpr_time_add(
-      timeout, gpr_time_from_nanos(GPR_NS_PER_SEC - 1, GPR_TIMESPAN)));
+      timeout, gpr_time_from_nanos(GPR_NS_PER_MS - 1, GPR_TIMESPAN)));
 }
 
 /*
@@ -338,6 +420,7 @@ static void basic_do_promote(grpc_exec_ctx *exec_ctx, void *args, int success) {
   if (pollset->shutting_down) {
     /* We don't care about this pollset anymore. */
     if (pollset->in_flight_cbs == 0 && !pollset->called_shutdown) {
+      pollset->called_shutdown = 1;
       finish_shutdown(exec_ctx, pollset);
     }
   } else if (grpc_fd_is_orphaned(fd)) {
@@ -439,7 +522,10 @@ static void basic_pollset_maybe_work_and_unlock(grpc_exec_ctx *exec_ctx,
                                                 grpc_pollset_worker *worker,
                                                 gpr_timespec deadline,
                                                 gpr_timespec now) {
-  struct pollfd pfd[2];
+#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR)
+#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR)
+
+  struct pollfd pfd[3];
   grpc_fd *fd;
   grpc_fd_watcher fd_watcher;
   int timeout;
@@ -452,23 +538,29 @@ static void basic_pollset_maybe_work_and_unlock(grpc_exec_ctx *exec_ctx,
     fd = pollset->data.ptr = NULL;
   }
   timeout = grpc_poll_deadline_to_millis_timeout(deadline, now);
-  pfd[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd);
+  pfd[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd);
   pfd[0].events = POLLIN;
   pfd[0].revents = 0;
-  nfds = 1;
+  pfd[1].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd);
+  pfd[1].events = POLLIN;
+  pfd[1].revents = 0;
+  nfds = 2;
   if (fd) {
-    pfd[1].fd = fd->fd;
-    pfd[1].revents = 0;
+    pfd[2].fd = fd->fd;
+    pfd[2].revents = 0;
+    GRPC_FD_REF(fd, "basicpoll_begin");
     gpr_mu_unlock(&pollset->mu);
-    pfd[1].events =
-        (short)grpc_fd_begin_poll(fd, pollset, POLLIN, POLLOUT, &fd_watcher);
-    if (pfd[1].events != 0) {
+    pfd[2].events = (short)grpc_fd_begin_poll(fd, pollset, worker, POLLIN,
+                                              POLLOUT, &fd_watcher);
+    if (pfd[2].events != 0) {
       nfds++;
     }
   } else {
     gpr_mu_unlock(&pollset->mu);
   }
 
+  /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
+     even going into the blocking annotation if possible */
   /* poll fd count (argument 2) is shortened by one if we have no events
      to poll on - such that it only includes the kicker */
   GRPC_SCHEDULING_START_BLOCKING_REGION;
@@ -476,30 +568,33 @@ static void basic_pollset_maybe_work_and_unlock(grpc_exec_ctx *exec_ctx,
   GRPC_SCHEDULING_END_BLOCKING_REGION;
   GRPC_TIMER_MARK(GRPC_PTAG_POLL_FINISHED, r);
 
-  if (fd) {
-    grpc_fd_end_poll(exec_ctx, &fd_watcher, pfd[1].revents & POLLIN,
-                     pfd[1].revents & POLLOUT);
-  }
-
   if (r < 0) {
-    if (errno != EINTR) {
-      gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
+    gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
+    if (fd) {
+      grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0);
     }
   } else if (r == 0) {
-    /* do nothing */
+    if (fd) {
+      grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0);
+    }
   } else {
-    if (pfd[0].revents & POLLIN) {
+    if (pfd[0].revents & POLLIN_CHECK) {
+      grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
+    }
+    if (pfd[1].revents & POLLIN_CHECK) {
       grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd);
     }
-    if (nfds > 1) {
-      if (pfd[1].revents & (POLLIN | POLLHUP | POLLERR)) {
-        grpc_fd_become_readable(exec_ctx, fd);
-      }
-      if (pfd[1].revents & (POLLOUT | POLLHUP | POLLERR)) {
-        grpc_fd_become_writable(exec_ctx, fd);
-      }
+    if (nfds > 2) {
+      grpc_fd_end_poll(exec_ctx, &fd_watcher, pfd[2].revents & POLLIN_CHECK,
+                       pfd[2].revents & POLLOUT_CHECK);
+    } else if (fd) {
+      grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0);
     }
   }
+
+  if (fd) {
+    GRPC_FD_UNREF(fd, "basicpoll_begin");
+  }
 }
 
 static void basic_pollset_destroy(grpc_pollset *pollset) {
diff --git a/src/core/iomgr/pollset_posix.h b/src/core/iomgr/pollset_posix.h
index f996dd1edfb0aa5a44e41afb74193f75c641f53d..34f76db2afa93190047d8e827e5a862d180bf690 100644
--- a/src/core/iomgr/pollset_posix.h
+++ b/src/core/iomgr/pollset_posix.h
@@ -50,6 +50,7 @@ struct grpc_fd;
 
 typedef struct grpc_pollset_worker {
   grpc_wakeup_fd wakeup_fd;
+  int reevaluate_polling_on_wakeup;
   struct grpc_pollset_worker *next;
   struct grpc_pollset_worker *prev;
 } grpc_pollset_worker;
@@ -111,6 +112,16 @@ void grpc_kick_drain(grpc_pollset *p);
 int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline,
                                          gpr_timespec now);
 
+/* Allow kick to wakeup the currently polling worker */
+#define GRPC_POLLSET_CAN_KICK_SELF 1
+/* Force the wakee to repoll when awoken */
+#define GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP 2
+/* As per grpc_pollset_kick, with an extended set of flags (defined above)
+   -- mostly for fd_posix's use. */
+void grpc_pollset_kick_ext(grpc_pollset *p,
+                           grpc_pollset_worker *specific_worker,
+                           gpr_uint32 flags);
+
 /* turn a pollset into a multipoller: platform specific */
 typedef void (*grpc_platform_become_multipoller_type)(grpc_exec_ctx *exec_ctx,
                                                       grpc_pollset *pollset,
@@ -129,5 +140,6 @@ int grpc_pollset_has_workers(grpc_pollset *pollset);
 /* override to allow tests to hook poll() usage */
 typedef int (*grpc_poll_function_type)(struct pollfd *, nfds_t, int);
 extern grpc_poll_function_type grpc_poll_function;
+extern grpc_wakeup_fd grpc_global_wakeup_fd;
 
 #endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_POSIX_H */
diff --git a/src/core/iomgr/pollset_windows.c b/src/core/iomgr/pollset_windows.c
index 6182eb353289a283e360d5fb620a2656e14e9603..96abaea0b362ae48bf5546a614804f36a0170fc8 100644
--- a/src/core/iomgr/pollset_windows.c
+++ b/src/core/iomgr/pollset_windows.c
@@ -39,38 +39,63 @@
 
 #include "src/core/iomgr/alarm_internal.h"
 #include "src/core/iomgr/iomgr_internal.h"
+#include "src/core/iomgr/iocp_windows.h"
 #include "src/core/iomgr/pollset.h"
 #include "src/core/iomgr/pollset_windows.h"
 
-static void remove_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
-  worker->prev->next = worker->next;
-  worker->next->prev = worker->prev;
+gpr_mu grpc_polling_mu;
+static grpc_pollset_worker *g_active_poller;
+static grpc_pollset_worker g_global_root_worker;
+
+void grpc_pollset_global_init() {
+  gpr_mu_init(&grpc_polling_mu);
+  g_active_poller = NULL;
+  g_global_root_worker.links[GRPC_POLLSET_WORKER_LINK_GLOBAL].next =
+      g_global_root_worker.links[GRPC_POLLSET_WORKER_LINK_GLOBAL].prev =
+          &g_global_root_worker;
 }
 
-static int has_workers(grpc_pollset *p) {
-  return p->root_worker.next != &p->root_worker;
+void grpc_pollset_global_shutdown() { gpr_mu_destroy(&grpc_polling_mu); }
+
+static void remove_worker(grpc_pollset_worker *worker,
+                          grpc_pollset_worker_link_type type) {
+  worker->links[type].prev->links[type].next = worker->links[type].next;
+  worker->links[type].next->links[type].prev = worker->links[type].prev;
+  worker->links[type].next = worker->links[type].prev = worker;
 }
 
-static grpc_pollset_worker *pop_front_worker(grpc_pollset *p) {
-  if (has_workers(p)) {
-    grpc_pollset_worker *w = p->root_worker.next;
-    remove_worker(p, w);
+static int has_workers(grpc_pollset_worker *root,
+                       grpc_pollset_worker_link_type type) {
+  return root->links[type].next != root;
+}
+
+static grpc_pollset_worker *pop_front_worker(
+    grpc_pollset_worker *root, grpc_pollset_worker_link_type type) {
+  if (has_workers(root, type)) {
+    grpc_pollset_worker *w = root->links[type].next;
+    remove_worker(w, type);
     return w;
   } else {
     return NULL;
   }
 }
 
-static void push_back_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
-  worker->next = &p->root_worker;
-  worker->prev = worker->next->prev;
-  worker->prev->next = worker->next->prev = worker;
+static void push_back_worker(grpc_pollset_worker *root,
+                             grpc_pollset_worker_link_type type,
+                             grpc_pollset_worker *worker) {
+  worker->links[type].next = root;
+  worker->links[type].prev = worker->links[type].next->links[type].prev;
+  worker->links[type].prev->links[type].next =
+      worker->links[type].next->links[type].prev = worker;
 }
 
-static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
-  worker->prev = &p->root_worker;
-  worker->next = worker->prev->next;
-  worker->prev->next = worker->next->prev = worker;
+static void push_front_worker(grpc_pollset_worker *root,
+                              grpc_pollset_worker_link_type type,
+                              grpc_pollset_worker *worker) {
+  worker->links[type].prev = root;
+  worker->links[type].next = worker->links[type].prev->links[type].next;
+  worker->links[type].prev->links[type].next =
+      worker->links[type].next->links[type].prev = worker;
 }
 
 /* There isn't really any such thing as a pollset under Windows, due to the
@@ -80,73 +105,135 @@ static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
 
 void grpc_pollset_init(grpc_pollset *pollset) {
   memset(pollset, 0, sizeof(*pollset));
-  gpr_mu_init(&pollset->mu);
-  pollset->root_worker.next = pollset->root_worker.prev = &pollset->root_worker;
-  pollset->kicked_without_pollers = 0;
+  pollset->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].next =
+      pollset->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].prev =
+          &pollset->root_worker;
 }
 
 void grpc_pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                            grpc_closure *closure) {
-  gpr_mu_lock(&pollset->mu);
+  gpr_mu_lock(&grpc_polling_mu);
   pollset->shutting_down = 1;
   grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
-  gpr_mu_unlock(&pollset->mu);
-  grpc_exec_ctx_enqueue(exec_ctx, closure, 1);
+  if (!pollset->is_iocp_worker) {
+    grpc_exec_ctx_enqueue(exec_ctx, closure, 1);
+  } else {
+    pollset->on_shutdown = closure;
+  }
+  gpr_mu_unlock(&grpc_polling_mu);
 }
 
-void grpc_pollset_destroy(grpc_pollset *pollset) {
-  gpr_mu_destroy(&pollset->mu);
-}
+void grpc_pollset_destroy(grpc_pollset *pollset) {}
 
 void grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                        grpc_pollset_worker *worker, gpr_timespec now,
                        gpr_timespec deadline) {
   int added_worker = 0;
-  worker->next = worker->prev = NULL;
+  worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].next =
+      worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].prev =
+          worker->links[GRPC_POLLSET_WORKER_LINK_GLOBAL].next =
+              worker->links[GRPC_POLLSET_WORKER_LINK_GLOBAL].prev = NULL;
+  worker->kicked = 0;
+  worker->pollset = pollset;
   gpr_cv_init(&worker->cv);
   if (grpc_alarm_check(exec_ctx, now, &deadline)) {
     goto done;
   }
   if (!pollset->kicked_without_pollers && !pollset->shutting_down) {
-    push_front_worker(pollset, worker);
+    if (g_active_poller == NULL) {
+      grpc_pollset_worker *next_worker;
+      /* become poller */
+      pollset->is_iocp_worker = 1;
+      g_active_poller = worker;
+      gpr_mu_unlock(&grpc_polling_mu);
+      grpc_iocp_work(exec_ctx, deadline);
+      grpc_exec_ctx_flush(exec_ctx);
+      gpr_mu_lock(&grpc_polling_mu);
+      pollset->is_iocp_worker = 0;
+      g_active_poller = NULL;
+      /* try to get a worker from this pollsets worker list */
+      next_worker = pop_front_worker(&pollset->root_worker,
+                                     GRPC_POLLSET_WORKER_LINK_POLLSET);
+      if (next_worker == NULL) {
+        /* try to get a worker from the global list */
+        next_worker = pop_front_worker(&g_global_root_worker,
+                                       GRPC_POLLSET_WORKER_LINK_GLOBAL);
+      }
+      if (next_worker != NULL) {
+        next_worker->kicked = 1;
+        gpr_cv_signal(&next_worker->cv);
+      }
+
+      if (pollset->shutting_down && pollset->on_shutdown != NULL) {
+        grpc_exec_ctx_enqueue(exec_ctx, pollset->on_shutdown, 1);
+        pollset->on_shutdown = NULL;
+      }
+      goto done;
+    }
+    push_front_worker(&g_global_root_worker, GRPC_POLLSET_WORKER_LINK_GLOBAL,
+                      worker);
+    push_front_worker(&pollset->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET,
+                      worker);
     added_worker = 1;
-    gpr_cv_wait(&worker->cv, &pollset->mu, deadline);
+    while (!worker->kicked) {
+      if (gpr_cv_wait(&worker->cv, &grpc_polling_mu, deadline)) {
+        break;
+      }
+    }
   } else {
     pollset->kicked_without_pollers = 0;
   }
 done:
   if (!grpc_closure_list_empty(exec_ctx->closure_list)) {
-    gpr_mu_unlock(&pollset->mu);
+    gpr_mu_unlock(&grpc_polling_mu);
     grpc_exec_ctx_flush(exec_ctx);
-    gpr_mu_lock(&pollset->mu);
+    gpr_mu_lock(&grpc_polling_mu);
   }
-  gpr_cv_destroy(&worker->cv);
   if (added_worker) {
-    remove_worker(pollset, worker);
+    remove_worker(worker, GRPC_POLLSET_WORKER_LINK_GLOBAL);
+    remove_worker(worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
   }
+  gpr_cv_destroy(&worker->cv);
 }
 
 void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) {
   if (specific_worker != NULL) {
     if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
-      for (specific_worker = p->root_worker.next;
+      for (specific_worker =
+               p->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].next;
            specific_worker != &p->root_worker;
-           specific_worker = specific_worker->next) {
+           specific_worker =
+               specific_worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].next) {
+        specific_worker->kicked = 1;
         gpr_cv_signal(&specific_worker->cv);
       }
       p->kicked_without_pollers = 1;
+      if (p->is_iocp_worker) {
+        grpc_iocp_kick();
+      }
     } else {
-      gpr_cv_signal(&specific_worker->cv);
+      if (p->is_iocp_worker) {
+        if (g_active_poller == specific_worker) {
+          grpc_iocp_kick();
+        }
+      } else {
+        specific_worker->kicked = 1;
+        gpr_cv_signal(&specific_worker->cv);
+      }
     }
   } else {
-    specific_worker = pop_front_worker(p);
+    specific_worker =
+        pop_front_worker(&p->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
     if (specific_worker != NULL) {
-      push_back_worker(p, specific_worker);
-      gpr_cv_signal(&specific_worker->cv);
+      grpc_pollset_kick(p, specific_worker);
+    } else if (p->is_iocp_worker) {
+      grpc_iocp_kick();
     } else {
       p->kicked_without_pollers = 1;
     }
   }
 }
 
+void grpc_kick_poller(void) { grpc_iocp_kick(); }
+
 #endif /* GPR_WINSOCK_SOCKET */
diff --git a/src/core/iomgr/pollset_windows.h b/src/core/iomgr/pollset_windows.h
index 4efa5a1717cdfa31901a3303eaeb865fb9e96be7..65ba80619b77437fa8f263d2fb5bf9966c22449d 100644
--- a/src/core/iomgr/pollset_windows.h
+++ b/src/core/iomgr/pollset_windows.h
@@ -43,19 +43,37 @@
    used to synchronize with the IOCP, and workers are condition variables
    used to block threads until work is ready. */
 
-typedef struct grpc_pollset_worker {
-  gpr_cv cv;
+typedef enum {
+  GRPC_POLLSET_WORKER_LINK_POLLSET = 0,
+  GRPC_POLLSET_WORKER_LINK_GLOBAL,
+  GRPC_POLLSET_WORKER_LINK_TYPES
+} grpc_pollset_worker_link_type;
+
+typedef struct grpc_pollset_worker_link {
   struct grpc_pollset_worker *next;
   struct grpc_pollset_worker *prev;
+} grpc_pollset_worker_link;
+
+struct grpc_pollset;
+typedef struct grpc_pollset grpc_pollset;
+
+typedef struct grpc_pollset_worker {
+  gpr_cv cv;
+  int kicked;
+  struct grpc_pollset *pollset;
+  grpc_pollset_worker_link links[GRPC_POLLSET_WORKER_LINK_TYPES];
 } grpc_pollset_worker;
 
-typedef struct grpc_pollset {
-  gpr_mu mu;
+struct grpc_pollset {
   int shutting_down;
   int kicked_without_pollers;
+  int is_iocp_worker;
   grpc_pollset_worker root_worker;
-} grpc_pollset;
+  grpc_closure *on_shutdown;
+};
+
+extern gpr_mu grpc_polling_mu;
 
-#define GRPC_POLLSET_MU(pollset) (&(pollset)->mu)
+#define GRPC_POLLSET_MU(pollset) (&grpc_polling_mu)
 
 #endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_WINDOWS_H */
diff --git a/src/core/iomgr/tcp_client_posix.c b/src/core/iomgr/tcp_client_posix.c
index 346566866a2d0f2190faf6a2a4c083cb41df6c85..aca2691c416e64f29d9ea81db9e223fc82ace368 100644
--- a/src/core/iomgr/tcp_client_posix.c
+++ b/src/core/iomgr/tcp_client_posix.c
@@ -141,7 +141,8 @@ static void on_writable(grpc_exec_ctx *exec_ctx, void *acp, int success) {
       err = getsockopt(fd->fd, SOL_SOCKET, SO_ERROR, &so_error, &so_error_size);
     } while (err < 0 && errno == EINTR);
     if (err < 0) {
-      gpr_log(GPR_ERROR, "getsockopt(ERROR): %s", strerror(errno));
+      gpr_log(GPR_ERROR, "failed to connect to '%s': getsockopt(ERROR): %s",
+              ac->addr_str, strerror(errno));
       goto finish;
     } else if (so_error != 0) {
       if (so_error == ENOBUFS) {
@@ -166,10 +167,14 @@ static void on_writable(grpc_exec_ctx *exec_ctx, void *acp, int success) {
       } else {
         switch (so_error) {
           case ECONNREFUSED:
-            gpr_log(GPR_ERROR, "socket error: connection refused");
+            gpr_log(
+                GPR_ERROR,
+                "failed to connect to '%s': socket error: connection refused",
+                ac->addr_str);
             break;
           default:
-            gpr_log(GPR_ERROR, "socket error: %d", so_error);
+            gpr_log(GPR_ERROR, "failed to connect to '%s': socket error: %d",
+                    ac->addr_str, so_error);
             break;
         }
         goto finish;
@@ -181,7 +186,8 @@ static void on_writable(grpc_exec_ctx *exec_ctx, void *acp, int success) {
       goto finish;
     }
   } else {
-    gpr_log(GPR_ERROR, "on_writable failed during connect");
+    gpr_log(GPR_ERROR, "failed to connect to '%s': timeout occurred",
+            ac->addr_str);
     goto finish;
   }
 
diff --git a/src/core/iomgr/tcp_posix.c b/src/core/iomgr/tcp_posix.c
index 54ebad7dbc7ccf9fb288e6bc4acfba8def469ccc..4a57037a720e3a00f3049a77419c901fa6974041 100644
--- a/src/core/iomgr/tcp_posix.c
+++ b/src/core/iomgr/tcp_posix.c
@@ -292,7 +292,7 @@ static flush_result tcp_flush(grpc_tcp *tcp) {
     unwind_slice_idx = tcp->outgoing_slice_idx;
     unwind_byte_idx = tcp->outgoing_byte_idx;
     for (iov_size = 0; tcp->outgoing_slice_idx != tcp->outgoing_buffer->count &&
-                       iov_size != MAX_WRITE_IOVEC;
+                           iov_size != MAX_WRITE_IOVEC;
          iov_size++) {
       iov[iov_size].iov_base =
           GPR_SLICE_START_PTR(
@@ -441,7 +441,7 @@ static char *tcp_get_peer(grpc_endpoint *ep) {
 }
 
 static const grpc_endpoint_vtable vtable = {
-    tcp_read,     tcp_write,   tcp_add_to_pollset, tcp_add_to_pollset_set,
+    tcp_read, tcp_write, tcp_add_to_pollset, tcp_add_to_pollset_set,
     tcp_shutdown, tcp_destroy, tcp_get_peer};
 
 grpc_endpoint *grpc_tcp_create(grpc_fd *em_fd, size_t slice_size,
diff --git a/src/core/iomgr/tcp_server_posix.c b/src/core/iomgr/tcp_server_posix.c
index a582f4a7c315f4e072dea564a429efeed983be7d..13bd67576f55d9adf90d36c64c69efcaed7f3c41 100644
--- a/src/core/iomgr/tcp_server_posix.c
+++ b/src/core/iomgr/tcp_server_posix.c
@@ -478,8 +478,8 @@ done:
   return allocated_port1 >= 0 ? allocated_port1 : allocated_port2;
 }
 
-int grpc_tcp_server_get_fd(grpc_tcp_server *s, unsigned index) {
-  return (index < s->nports) ? s->ports[index].fd : -1;
+int grpc_tcp_server_get_fd(grpc_tcp_server *s, unsigned port_index) {
+  return (port_index < s->nports) ? s->ports[port_index].fd : -1;
 }
 
 void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
diff --git a/src/core/iomgr/tcp_server_windows.c b/src/core/iomgr/tcp_server_windows.c
index 4b11ab0f0649972469d9c4d89e394f6f3160e23a..3fea8b5b35059cebda7c044de874415662f2844f 100644
--- a/src/core/iomgr/tcp_server_windows.c
+++ b/src/core/iomgr/tcp_server_windows.c
@@ -336,6 +336,8 @@ static void on_accept(grpc_exec_ctx *exec_ctx, void *arg, int from_iocp) {
                            peer_name_string);
       gpr_free(fd_name);
       gpr_free(peer_name_string);
+    } else {
+      closesocket(sock);
     }
   }
 
@@ -382,7 +384,7 @@ static int add_socket_to_server(grpc_tcp_server *s, SOCKET sock,
     if (s->nports == s->port_capacity) {
       /* too many ports, and we need to store their address in a closure */
       /* TODO(ctiller): make server_port a linked list */
-      abort(); 
+      abort();
     }
     sp = &s->ports[s->nports++];
     sp->server = s;
diff --git a/src/core/iomgr/tcp_windows.c b/src/core/iomgr/tcp_windows.c
index b67683dbfd96dd6d97d23147609475381939bef8..9ceffca065415d3992e97eab090169ad7e600dfb 100644
--- a/src/core/iomgr/tcp_windows.c
+++ b/src/core/iomgr/tcp_windows.c
@@ -382,9 +382,9 @@ static char *win_get_peer(grpc_endpoint *ep) {
   return gpr_strdup(tcp->peer_string);
 }
 
-static grpc_endpoint_vtable vtable = {
-    win_read,     win_write,   win_add_to_pollset, win_add_to_pollset_set,
-    win_shutdown, win_destroy, win_get_peer};
+static grpc_endpoint_vtable vtable = {win_read, win_write, win_add_to_pollset,
+                                      win_add_to_pollset_set, win_shutdown,
+                                      win_destroy, win_get_peer};
 
 grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket, char *peer_string) {
   grpc_tcp *tcp = (grpc_tcp *)gpr_malloc(sizeof(grpc_tcp));
diff --git a/src/core/iomgr/udp_server.c b/src/core/iomgr/udp_server.c
index 9baaf1edc78cb63df2d042078c61c5c385f41134..9903e970e6643d1286be825c71d77d0cc50a2ee8 100644
--- a/src/core/iomgr/udp_server.c
+++ b/src/core/iomgr/udp_server.c
@@ -118,7 +118,7 @@ struct grpc_udp_server {
   /* number of pollsets in the pollsets array */
   size_t pollset_count;
   /* The parent grpc server */
-  grpc_server* grpc_server;
+  grpc_server *grpc_server;
 };
 
 grpc_udp_server *grpc_udp_server_create(void) {
@@ -232,7 +232,7 @@ static int prepare_socket(int fd, const struct sockaddr *addr,
   rc = setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &get_local_ip,
                   sizeof(get_local_ip));
   if (rc == 0 && addr->sa_family == AF_INET6) {
-#if !TARGET_OS_IPHONE
+#if !defined(__APPLE__)
     rc = setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &get_local_ip,
                     sizeof(get_local_ip));
 #endif
@@ -278,7 +278,7 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *arg, int success) {
 
   /* Tell the registered callback that data is available to read. */
   GPR_ASSERT(sp->read_cb);
-  sp->read_cb(sp->fd, sp->server->grpc_server);
+  sp->read_cb(exec_ctx, sp->emfd, sp->server->grpc_server);
 
   /* Re-arm the notification event so we get another chance to read. */
   grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure);
@@ -399,8 +399,8 @@ done:
   return allocated_port1 >= 0 ? allocated_port1 : allocated_port2;
 }
 
-int grpc_udp_server_get_fd(grpc_udp_server *s, unsigned index) {
-  return (index < s->nports) ? s->ports[index].fd : -1;
+int grpc_udp_server_get_fd(grpc_udp_server *s, unsigned port_index) {
+  return (port_index < s->nports) ? s->ports[port_index].fd : -1;
 }
 
 void grpc_udp_server_start(grpc_exec_ctx *exec_ctx, grpc_udp_server *s,
diff --git a/src/core/iomgr/udp_server.h b/src/core/iomgr/udp_server.h
index 8e3abae864ba2cfe16251bee3e968946b354db19..de5736c426221ff5a7e909f29fb857b3cc2525a4 100644
--- a/src/core/iomgr/udp_server.h
+++ b/src/core/iomgr/udp_server.h
@@ -43,7 +43,8 @@ typedef struct grpc_server grpc_server;
 typedef struct grpc_udp_server grpc_udp_server;
 
 /* Called when data is available to read from the socket. */
-typedef void (*grpc_udp_server_read_cb)(int fd, grpc_server *server);
+typedef void (*grpc_udp_server_read_cb)(grpc_exec_ctx *exec_ctx, grpc_fd *emfd,
+                                        grpc_server *server);
 
 /* Create a server, initially not bound to any ports */
 grpc_udp_server *grpc_udp_server_create(void);
diff --git a/src/core/security/client_auth_filter.c b/src/core/security/client_auth_filter.c
index 3f4c084ffcdebb6beb1da70163cec288579de009..635982b252a0da280d16034894c2a0678efb7c1a 100644
--- a/src/core/security/client_auth_filter.c
+++ b/src/core/security/client_auth_filter.c
@@ -355,8 +355,7 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 }
 
 const grpc_channel_filter grpc_client_auth_filter = {
-    auth_start_transport_op, grpc_channel_next_op,
-    sizeof(call_data),       init_call_elem,
-    destroy_call_elem,       sizeof(channel_data),
-    init_channel_elem,       destroy_channel_elem,
-    grpc_call_next_get_peer, "client-auth"};
+    auth_start_transport_op, grpc_channel_next_op, sizeof(call_data),
+    init_call_elem,          destroy_call_elem,    sizeof(channel_data),
+    init_channel_elem,       destroy_channel_elem, grpc_call_next_get_peer,
+    "client-auth"};
diff --git a/src/core/security/credentials.c b/src/core/security/credentials.c
index bdd9ab8e9caafe248e731aef9f6559d36b2ee3e6..398db20e8cf0ad817d30a1f5ffda0fed2076bd9b 100644
--- a/src/core/security/credentials.c
+++ b/src/core/security/credentials.c
@@ -41,6 +41,7 @@
 #include "src/core/json/json.h"
 #include "src/core/httpcli/httpcli.h"
 #include "src/core/iomgr/iomgr.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/support/string.h"
 
 #include <grpc/support/alloc.h>
@@ -91,6 +92,7 @@ void grpc_credentials_unref(grpc_credentials *creds) {
 }
 
 void grpc_credentials_release(grpc_credentials *creds) {
+  GRPC_API_TRACE("grpc_credentials_release(creds=%p)", 1, (creds));
   grpc_credentials_unref(creds);
 }
 
@@ -152,6 +154,7 @@ void grpc_server_credentials_unref(grpc_server_credentials *creds) {
 }
 
 void grpc_server_credentials_release(grpc_server_credentials *creds) {
+  GRPC_API_TRACE("grpc_server_credentials_release(creds=%p)", 1, (creds));
   grpc_server_credentials_unref(creds);
 }
 
@@ -166,6 +169,11 @@ grpc_security_status grpc_server_credentials_create_security_connector(
 
 void grpc_server_credentials_set_auth_metadata_processor(
     grpc_server_credentials *creds, grpc_auth_metadata_processor processor) {
+  GRPC_API_TRACE(
+      "grpc_server_credentials_set_auth_metadata_processor("
+      "creds=%p, "
+      "processor=grpc_auth_metadata_processor { process: %lx, state: %p })",
+      3, (creds, (unsigned long)processor.process, processor.state));
   if (creds == NULL) return;
   if (creds->processor.destroy != NULL && creds->processor.state != NULL) {
     creds->processor.destroy(creds->processor.state);
@@ -317,6 +325,11 @@ grpc_credentials *grpc_ssl_credentials_create(
     const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pair,
     void *reserved) {
   grpc_ssl_credentials *c = gpr_malloc(sizeof(grpc_ssl_credentials));
+  GRPC_API_TRACE(
+      "grpc_ssl_credentials_create(pem_root_certs=%s, "
+      "pem_key_cert_pair=%p, "
+      "reserved=%p)",
+      3, (pem_root_certs, pem_key_cert_pair, reserved));
   GPR_ASSERT(reserved == NULL);
   memset(c, 0, sizeof(grpc_ssl_credentials));
   c->base.type = GRPC_CREDENTIALS_TYPE_SSL;
@@ -331,6 +344,12 @@ grpc_server_credentials *grpc_ssl_server_credentials_create(
     size_t num_key_cert_pairs, int force_client_auth, void *reserved) {
   grpc_ssl_server_credentials *c =
       gpr_malloc(sizeof(grpc_ssl_server_credentials));
+  GRPC_API_TRACE(
+      "grpc_ssl_server_credentials_create("
+      "pem_root_certs=%s, pem_key_cert_pairs=%p, num_key_cert_pairs=%lu, "
+      "force_client_auth=%d, reserved=%p)",
+      5, (pem_root_certs, pem_key_cert_pairs, (unsigned long)num_key_cert_pairs,
+          force_client_auth, reserved));
   GPR_ASSERT(reserved == NULL);
   memset(c, 0, sizeof(grpc_ssl_server_credentials));
   c->base.type = GRPC_CREDENTIALS_TYPE_SSL;
@@ -449,6 +468,14 @@ grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
 
 grpc_credentials *grpc_service_account_jwt_access_credentials_create(
     const char *json_key, gpr_timespec token_lifetime, void *reserved) {
+  GRPC_API_TRACE(
+      "grpc_service_account_jwt_access_credentials_create("
+      "json_key=%s, "
+      "token_lifetime="
+      "gpr_timespec { tv_sec: %ld, tv_nsec: %d, clock_type: %d }, "
+      "reserved=%p)",
+      5, (json_key, (long)token_lifetime.tv_sec, token_lifetime.tv_nsec,
+          (int)token_lifetime.clock_type, reserved));
   GPR_ASSERT(reserved == NULL);
   return grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
       grpc_auth_json_key_create_from_string(json_key), token_lifetime);
@@ -659,6 +686,8 @@ grpc_credentials *grpc_google_compute_engine_credentials_create(
     void *reserved) {
   grpc_oauth2_token_fetcher_credentials *c =
       gpr_malloc(sizeof(grpc_oauth2_token_fetcher_credentials));
+  GRPC_API_TRACE("grpc_compute_engine_credentials_create(reserved=%p)", 1,
+                 (reserved));
   GPR_ASSERT(reserved == NULL);
   init_oauth2_token_fetcher(c, compute_engine_fetch_oauth2);
   c->base.vtable = &compute_engine_vtable;
@@ -720,6 +749,10 @@ grpc_credentials *grpc_refresh_token_credentials_create_from_auth_refresh_token(
 
 grpc_credentials *grpc_google_refresh_token_credentials_create(
     const char *json_refresh_token, void *reserved) {
+  GRPC_API_TRACE(
+      "grpc_refresh_token_credentials_create(json_refresh_token=%s, "
+      "reserved=%p)",
+      2, (json_refresh_token, reserved));
   GPR_ASSERT(reserved == NULL);
   return grpc_refresh_token_credentials_create_from_auth_refresh_token(
       grpc_auth_refresh_token_create_from_string(json_refresh_token));
@@ -820,6 +853,10 @@ grpc_credentials *grpc_access_token_credentials_create(const char *access_token,
   grpc_access_token_credentials *c =
       gpr_malloc(sizeof(grpc_access_token_credentials));
   char *token_md_value;
+  GRPC_API_TRACE(
+      "grpc_access_token_credentials_create(access_token=%s, "
+      "reserved=%p)",
+      2, (access_token, reserved));
   GPR_ASSERT(reserved == NULL);
   memset(c, 0, sizeof(grpc_access_token_credentials));
   c->base.type = GRPC_CREDENTIALS_TYPE_OAUTH2;
@@ -1056,6 +1093,10 @@ grpc_credentials *grpc_composite_credentials_create(grpc_credentials *creds1,
   grpc_credentials_array creds1_array;
   grpc_credentials_array creds2_array;
   grpc_composite_credentials *c;
+  GRPC_API_TRACE(
+      "grpc_composite_credentials_create(creds1=%p, creds2=%p, "
+      "reserved=%p)",
+      3, (creds1, creds2, reserved));
   GPR_ASSERT(reserved == NULL);
   GPR_ASSERT(creds1 != NULL);
   GPR_ASSERT(creds2 != NULL);
@@ -1158,6 +1199,10 @@ static grpc_credentials_vtable iam_vtable = {
 grpc_credentials *grpc_google_iam_credentials_create(
     const char *token, const char *authority_selector, void *reserved) {
   grpc_google_iam_credentials *c;
+  GRPC_API_TRACE(
+      "grpc_iam_credentials_create(token=%s, authority_selector=%s, "
+      "reserved=%p)",
+      3, (token, authority_selector, reserved));
   GPR_ASSERT(reserved == NULL);
   GPR_ASSERT(token != NULL);
   GPR_ASSERT(authority_selector != NULL);
diff --git a/src/core/security/google_default_credentials.c b/src/core/security/google_default_credentials.c
index 7b858428083bf296eec31c674d1309e4e1a29d80..45135305b2883395bd5eef481408878252992ee4 100644
--- a/src/core/security/google_default_credentials.c
+++ b/src/core/security/google_default_credentials.c
@@ -42,6 +42,7 @@
 #include "src/core/httpcli/httpcli.h"
 #include "src/core/support/env.h"
 #include "src/core/support/file.h"
+#include "src/core/surface/api_trace.h"
 
 /* -- Constants. -- */
 
@@ -178,6 +179,9 @@ end:
 grpc_credentials *grpc_google_default_credentials_create(void) {
   grpc_credentials *result = NULL;
   int serving_cached_credentials = 0;
+
+  GRPC_API_TRACE("grpc_google_default_credentials_create(void)", 0, ());
+
   gpr_once_init(&g_once, init_default_credentials);
 
   gpr_mu_lock(&g_mu);
diff --git a/src/core/security/secure_endpoint.c b/src/core/security/secure_endpoint.c
index 0288f7128a786095b4c41eb69886c611d25efd7b..fd50abb7732ed2006878c48b2791c6219323e3f0 100644
--- a/src/core/security/secure_endpoint.c
+++ b/src/core/security/secure_endpoint.c
@@ -354,9 +354,8 @@ static char *endpoint_get_peer(grpc_endpoint *secure_ep) {
 }
 
 static const grpc_endpoint_vtable vtable = {
-    endpoint_read,           endpoint_write,
-    endpoint_add_to_pollset, endpoint_add_to_pollset_set,
-    endpoint_shutdown,       endpoint_destroy,
+    endpoint_read, endpoint_write, endpoint_add_to_pollset,
+    endpoint_add_to_pollset_set, endpoint_shutdown, endpoint_destroy,
     endpoint_get_peer};
 
 grpc_endpoint *grpc_secure_endpoint_create(
diff --git a/src/core/security/security_context.c b/src/core/security/security_context.c
index 95d80ba122ff276fcf2e33335892baa12e895500..fb905e0b228fa06a5b40ebe0599eacf307225b8c 100644
--- a/src/core/security/security_context.c
+++ b/src/core/security/security_context.c
@@ -34,6 +34,7 @@
 #include <string.h>
 
 #include "src/core/security/security_context.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/call.h"
 #include "src/core/support/string.h"
 
@@ -47,6 +48,8 @@
 grpc_call_error grpc_call_set_credentials(grpc_call *call,
                                           grpc_credentials *creds) {
   grpc_client_security_context *ctx = NULL;
+  GRPC_API_TRACE("grpc_call_set_credentials(call=%p, creds=%p)", 2,
+                 (call, creds));
   if (!grpc_call_is_client(call)) {
     gpr_log(GPR_ERROR, "Method is client-side only.");
     return GRPC_CALL_ERROR_NOT_ON_SERVER;
@@ -71,6 +74,7 @@ grpc_call_error grpc_call_set_credentials(grpc_call *call,
 
 grpc_auth_context *grpc_call_auth_context(grpc_call *call) {
   void *sec_ctx = grpc_call_context_get(call, GRPC_CONTEXT_SECURITY);
+  GRPC_API_TRACE("grpc_call_auth_context(call=%p)", 1, (call));
   if (sec_ctx == NULL) return NULL;
   return grpc_call_is_client(call)
              ? GRPC_AUTH_CONTEXT_REF(
@@ -82,6 +86,7 @@ grpc_auth_context *grpc_call_auth_context(grpc_call *call) {
 }
 
 void grpc_auth_context_release(grpc_auth_context *context) {
+  GRPC_API_TRACE("grpc_auth_context_release(context=%p)", 1, (context));
   GRPC_AUTH_CONTEXT_UNREF(context, "grpc_auth_context_unref");
 }
 
@@ -174,6 +179,8 @@ void grpc_auth_context_unref(grpc_auth_context *ctx) {
 
 const char *grpc_auth_context_peer_identity_property_name(
     const grpc_auth_context *ctx) {
+  GRPC_API_TRACE("grpc_auth_context_peer_identity_property_name(ctx=%p)", 1,
+                 (ctx));
   return ctx->peer_identity_property_name;
 }
 
@@ -182,6 +189,9 @@ int grpc_auth_context_set_peer_identity_property_name(grpc_auth_context *ctx,
   grpc_auth_property_iterator it =
       grpc_auth_context_find_properties_by_name(ctx, name);
   const grpc_auth_property *prop = grpc_auth_property_iterator_next(&it);
+  GRPC_API_TRACE(
+      "grpc_auth_context_set_peer_identity_property_name(ctx=%p, name=%s)", 2,
+      (ctx, name));
   if (prop == NULL) {
     gpr_log(GPR_ERROR, "Property name %s not found in auth context.",
             name != NULL ? name : "NULL");
@@ -192,12 +202,14 @@ int grpc_auth_context_set_peer_identity_property_name(grpc_auth_context *ctx,
 }
 
 int grpc_auth_context_peer_is_authenticated(const grpc_auth_context *ctx) {
+  GRPC_API_TRACE("grpc_auth_context_peer_is_authenticated(ctx=%p)", 1, (ctx));
   return ctx->peer_identity_property_name == NULL ? 0 : 1;
 }
 
 grpc_auth_property_iterator grpc_auth_context_property_iterator(
     const grpc_auth_context *ctx) {
   grpc_auth_property_iterator it = empty_iterator;
+  GRPC_API_TRACE("grpc_auth_context_property_iterator(ctx=%p)", 1, (ctx));
   if (ctx == NULL) return it;
   it.ctx = ctx;
   return it;
@@ -205,6 +217,7 @@ grpc_auth_property_iterator grpc_auth_context_property_iterator(
 
 const grpc_auth_property *grpc_auth_property_iterator_next(
     grpc_auth_property_iterator *it) {
+  GRPC_API_TRACE("grpc_auth_property_iterator_next(it=%p)", 1, (it));
   if (it == NULL || it->ctx == NULL) return NULL;
   while (it->index == it->ctx->properties.count) {
     if (it->ctx->chained == NULL) return NULL;
@@ -229,6 +242,8 @@ const grpc_auth_property *grpc_auth_property_iterator_next(
 grpc_auth_property_iterator grpc_auth_context_find_properties_by_name(
     const grpc_auth_context *ctx, const char *name) {
   grpc_auth_property_iterator it = empty_iterator;
+  GRPC_API_TRACE("grpc_auth_context_find_properties_by_name(ctx=%p, name=%s)",
+                 2, (ctx, name));
   if (ctx == NULL || name == NULL) return empty_iterator;
   it.ctx = ctx;
   it.name = name;
@@ -237,6 +252,7 @@ grpc_auth_property_iterator grpc_auth_context_find_properties_by_name(
 
 grpc_auth_property_iterator grpc_auth_context_peer_identity(
     const grpc_auth_context *ctx) {
+  GRPC_API_TRACE("grpc_auth_context_peer_identity(ctx=%p)", 1, (ctx));
   if (ctx == NULL) return empty_iterator;
   return grpc_auth_context_find_properties_by_name(
       ctx, ctx->peer_identity_property_name);
@@ -255,6 +271,11 @@ static void ensure_auth_context_capacity(grpc_auth_context *ctx) {
 void grpc_auth_context_add_property(grpc_auth_context *ctx, const char *name,
                                     const char *value, size_t value_length) {
   grpc_auth_property *prop;
+  GRPC_API_TRACE(
+      "grpc_auth_context_add_property(ctx=%p, name=%s, value=%*.*s, "
+      "value_length=%lu)",
+      6, (ctx, name, (int)value_length, (int)value_length, value,
+          (unsigned long)value_length));
   ensure_auth_context_capacity(ctx);
   prop = &ctx->properties.array[ctx->properties.count++];
   prop->name = gpr_strdup(name);
@@ -268,6 +289,9 @@ void grpc_auth_context_add_cstring_property(grpc_auth_context *ctx,
                                             const char *name,
                                             const char *value) {
   grpc_auth_property *prop;
+  GRPC_API_TRACE(
+      "grpc_auth_context_add_cstring_property(ctx=%p, name=%s, value=%s)", 3,
+      (ctx, name, value));
   ensure_auth_context_capacity(ctx);
   prop = &ctx->properties.array[ctx->properties.count++];
   prop->name = gpr_strdup(name);
diff --git a/src/core/security/server_auth_filter.c b/src/core/security/server_auth_filter.c
index 9638b18e8825a8c8dcb24e9f391646781d73dc71..30ca9f57a25e2ae770afeba65c4070badf3ea436 100644
--- a/src/core/security/server_auth_filter.c
+++ b/src/core/security/server_auth_filter.c
@@ -273,8 +273,7 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 }
 
 const grpc_channel_filter grpc_server_auth_filter = {
-    auth_start_transport_op, grpc_channel_next_op,
-    sizeof(call_data),       init_call_elem,
-    destroy_call_elem,       sizeof(channel_data),
-    init_channel_elem,       destroy_channel_elem,
-    grpc_call_next_get_peer, "server-auth"};
+    auth_start_transport_op, grpc_channel_next_op, sizeof(call_data),
+    init_call_elem,          destroy_call_elem,    sizeof(channel_data),
+    init_channel_elem,       destroy_channel_elem, grpc_call_next_get_peer,
+    "server-auth"};
diff --git a/src/core/security/server_secure_chttp2.c b/src/core/security/server_secure_chttp2.c
index a6c515dc34e84c80a41843db3ea976bef8161bc4..881e44a3fedd012397298dad20ad5872ac07a419 100644
--- a/src/core/security/server_secure_chttp2.c
+++ b/src/core/security/server_secure_chttp2.c
@@ -44,6 +44,7 @@
 #include "src/core/security/credentials.h"
 #include "src/core/security/security_connector.h"
 #include "src/core/security/security_context.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/server.h"
 #include "src/core/transport/chttp2_transport.h"
 #include <grpc/support/alloc.h>
@@ -222,6 +223,11 @@ int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
   grpc_security_connector *sc = NULL;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE(
+      "grpc_server_add_secure_http2_port("
+      "server=%p, addr=%s, creds=%p)",
+      3, (server, addr, creds));
+
   /* create security context */
   if (creds == NULL) goto error;
   status = grpc_server_credentials_create_security_connector(creds, &sc);
diff --git a/src/core/statistics/census_rpc_stats.c b/src/core/statistics/census_rpc_stats.c
index ba2c81d6a3b10e4dd1eeb19f44fd0909d86f43e5..d6638ed641db0f0e5ddf7cd5b6144494d3d9db3f 100644
--- a/src/core/statistics/census_rpc_stats.c
+++ b/src/core/statistics/census_rpc_stats.c
@@ -85,8 +85,8 @@ static void delete_key(void *key) { gpr_free(key); }
 
 static const census_ht_option ht_opt = {
     CENSUS_HT_POINTER /* key type */, 1999 /* n_of_buckets */,
-    simple_hash /* hash function */,  cmp_str_keys /* key comparator */,
-    delete_stats /* data deleter */,  delete_key /* key deleter */
+    simple_hash /* hash function */, cmp_str_keys /* key comparator */,
+    delete_stats /* data deleter */, delete_key /* key deleter */
 };
 
 static void init_rpc_stats(void *stats) {
diff --git a/src/core/statistics/census_tracing.c b/src/core/statistics/census_tracing.c
index 0eeecfe6c8729c821b6805c1b8c0b6ac40d3e656..ecbe27e536956a6b7a5fd34b77b080b2dac9e62d 100644
--- a/src/core/statistics/census_tracing.c
+++ b/src/core/statistics/census_tracing.c
@@ -60,11 +60,8 @@ static void delete_trace_obj(void *obj) {
 }
 
 static const census_ht_option ht_opt = {
-    CENSUS_HT_UINT64 /* key type */,
-    571 /* n_of_buckets */,
-    NULL /* hash */,
-    NULL /* compare_keys */,
-    delete_trace_obj /* delete data */,
+    CENSUS_HT_UINT64 /* key type */, 571 /* n_of_buckets */, NULL /* hash */,
+    NULL /* compare_keys */, delete_trace_obj /* delete data */,
     NULL /* delete key */
 };
 
diff --git a/src/core/support/histogram.c b/src/core/support/histogram.c
index 78dbf98684ace19e79f92e0fddc1ff6b390517ca..8a1a9d92330d2210d2195dc4adea0c0c8f30b5c7 100644
--- a/src/core/support/histogram.c
+++ b/src/core/support/histogram.c
@@ -212,7 +212,7 @@ double gpr_histogram_percentile(gpr_histogram *h, double percentile) {
 }
 
 double gpr_histogram_mean(gpr_histogram *h) {
-  GPR_ASSERT(h->count);
+  GPR_ASSERT(h->count != 0);
   return h->sum / h->count;
 }
 
diff --git a/src/core/support/slice_buffer.c b/src/core/support/slice_buffer.c
index a1aa56fd722a15c4a7b663f3f189cf7afb8242cc..310fbe1350c5b6a5411330bf7b31530e25cc155f 100644
--- a/src/core/support/slice_buffer.c
+++ b/src/core/support/slice_buffer.c
@@ -208,7 +208,8 @@ void gpr_slice_buffer_move_into(gpr_slice_buffer *src, gpr_slice_buffer *dst) {
   src->length = 0;
 }
 
-void gpr_slice_buffer_trim_end(gpr_slice_buffer *sb, size_t n, gpr_slice_buffer *garbage) {
+void gpr_slice_buffer_trim_end(gpr_slice_buffer *sb, size_t n,
+                               gpr_slice_buffer *garbage) {
   GPR_ASSERT(n <= sb->length);
   sb->length -= n;
   for (;;) {
diff --git a/src/core/support/time_posix.c b/src/core/support/time_posix.c
index eedfd0a060762c37ec2394d0464e9d615341156a..78f2c2bb77a6fb2c40155cbb90190d610fa86827 100644
--- a/src/core/support/time_posix.c
+++ b/src/core/support/time_posix.c
@@ -52,11 +52,11 @@ static struct timespec timespec_from_gpr(gpr_timespec gts) {
 
 #if _POSIX_TIMERS > 0
 static gpr_timespec gpr_from_timespec(struct timespec ts,
-                                      gpr_clock_type clock) {
+                                      gpr_clock_type clock_type) {
   gpr_timespec rv;
   rv.tv_sec = ts.tv_sec;
   rv.tv_nsec = (int)ts.tv_nsec;
-  rv.clock_type = clock;
+  rv.clock_type = clock_type;
   return rv;
 }
 
@@ -65,16 +65,16 @@ static clockid_t clockid_for_gpr_clock[] = {CLOCK_MONOTONIC, CLOCK_REALTIME};
 
 void gpr_time_init(void) {}
 
-gpr_timespec gpr_now(gpr_clock_type clock) {
+gpr_timespec gpr_now(gpr_clock_type clock_type) {
   struct timespec now;
-  GPR_ASSERT(clock != GPR_TIMESPAN);
-  if (clock == GPR_CLOCK_PRECISE) {
+  GPR_ASSERT(clock_type != GPR_TIMESPAN);
+  if (clock_type == GPR_CLOCK_PRECISE) {
     gpr_timespec ret;
     gpr_precise_clock_now(&ret);
     return ret;
   } else {
-    clock_gettime(clockid_for_gpr_clock[clock], &now);
-    return gpr_from_timespec(now, clock);
+    clock_gettime(clockid_for_gpr_clock[clock_type], &now);
+    return gpr_from_timespec(now, clock_type);
   }
 }
 #else
diff --git a/src/core/surface/surface_trace.c b/src/core/surface/api_trace.c
similarity index 95%
rename from src/core/surface/surface_trace.c
rename to src/core/surface/api_trace.c
index 57a0053162a3c6e82f2bb59963370962a2f16348..9f0b900d4671dd6103fdca6980d7f6a70f4f402c 100644
--- a/src/core/surface/surface_trace.c
+++ b/src/core/surface/api_trace.c
@@ -31,6 +31,6 @@
  *
  */
 
-#include "src/core/surface/surface_trace.h"
+#include "src/core/surface/api_trace.h"
 
-int grpc_surface_trace = 0;
+int grpc_api_trace = 0;
diff --git a/src/node/examples/stock_client.js b/src/core/surface/api_trace.h
similarity index 53%
rename from src/node/examples/stock_client.js
rename to src/core/surface/api_trace.h
index ab9b050e9b16790f8288ce0fef2300a5c33624f7..82bbf3b62b3a2231cc7602b249f4d48fada7ad8a 100644
--- a/src/node/examples/stock_client.js
+++ b/src/core/surface/api_trace.h
@@ -31,17 +31,35 @@
  *
  */
 
-var grpc = require('..');
-var examples = grpc.load(__dirname + '/stock.proto').examples;
+#ifndef GRPC_INTERNAL_CORE_SURFACE_API_TRACE_H
+#define GRPC_INTERNAL_CORE_SURFACE_API_TRACE_H
 
-/**
- * This exports a client constructor for the Stock service. The usage looks like
- *
- * var StockClient = require('stock_client.js');
- * var stockClient = new StockClient(server_address,
- *                                   grpc.Credentials.createInsecure());
- * stockClient.getLastTradePrice({symbol: 'GOOG'}, function(error, response) {
- *   console.log(error || response);
- * });
- */
-module.exports = examples.Stock;
+#include "src/core/debug/trace.h"
+#include <grpc/support/log.h>
+
+extern int grpc_api_trace;
+
+/* Provide unwrapping macros because we're in C89 and variadic macros weren't
+   introduced until C99... */
+#define GRPC_API_TRACE_UNWRAP0()
+#define GRPC_API_TRACE_UNWRAP1(a) , a
+#define GRPC_API_TRACE_UNWRAP2(a, b) , a, b
+#define GRPC_API_TRACE_UNWRAP3(a, b, c) , a, b, c
+#define GRPC_API_TRACE_UNWRAP4(a, b, c, d) , a, b, c, d
+#define GRPC_API_TRACE_UNWRAP5(a, b, c, d, e) , a, b, c, d, e
+#define GRPC_API_TRACE_UNWRAP6(a, b, c, d, e, f) , a, b, c, d, e, f
+#define GRPC_API_TRACE_UNWRAP7(a, b, c, d, e, f, g) , a, b, c, d, e, f, g
+#define GRPC_API_TRACE_UNWRAP8(a, b, c, d, e, f, g, h) , a, b, c, d, e, f, g, h
+#define GRPC_API_TRACE_UNWRAP9(a, b, c, d, e, f, g, h, i) \
+  , a, b, c, d, e, f, g, h, i
+#define GRPC_API_TRACE_UNWRAP10(a, b, c, d, e, f, g, h, i, j) \
+  , a, b, c, d, e, f, g, h, i, j
+
+/* Due to the limitations of C89's preprocessor, the arity of the var-arg list
+   'nargs' must be specified. */
+#define GRPC_API_TRACE(fmt, nargs, args)                      \
+  if (grpc_api_trace) {                                       \
+    gpr_log(GPR_INFO, fmt GRPC_API_TRACE_UNWRAP##nargs args); \
+  }
+
+#endif /* GRPC_INTERNAL_CORE_SURFACE_API_TRACE_H */
diff --git a/src/core/surface/call.c b/src/core/surface/call.c
index 0b917f156119b125e016d2b8d218511902d42101..07c3ff6ae4ec7871e028a0105e35465c01e24a3c 100644
--- a/src/core/surface/call.c
+++ b/src/core/surface/call.c
@@ -45,6 +45,7 @@
 #include "src/core/iomgr/alarm.h"
 #include "src/core/profiling/timers.h"
 #include "src/core/support/string.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/byte_buffer_queue.h"
 #include "src/core/surface/call.h"
 #include "src/core/surface/channel.h"
@@ -424,7 +425,12 @@ static grpc_cq_completion *allocate_completion(grpc_call *call) {
     if (call->allocated_completions & (1u << i)) {
       continue;
     }
-    call->allocated_completions |= (gpr_uint8)(1u << i);
+    /* NB: the following integer arithmetic operation needs to be in its
+     * expanded form due to the "integral promotion" performed (see section
+     * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+     * is then required to avoid the compiler warning */
+    call->allocated_completions =
+        (gpr_uint8)(call->allocated_completions | (1u << i));
     gpr_mu_unlock(&call->completion_mu);
     return &call->completions[i];
   }
@@ -735,7 +741,11 @@ static void finish_live_ioreq_op(grpc_call *call, grpc_ioreq_op op,
   size_t i;
   /* ioreq is live: we need to do something */
   master = &call->masters[master_set];
-  master->complete_mask |= (gpr_uint16)(1u << op);
+  /* NB: the following integer arithmetic operation needs to be in its
+   * expanded form due to the "integral promotion" performed (see section
+   * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+   * is then required to avoid the compiler warning */
+  master->complete_mask = (gpr_uint16)(master->complete_mask | (1u << op));
   if (!success) {
     master->success = 0;
   }
@@ -926,6 +936,7 @@ static int add_slice_to_message(grpc_call *call, gpr_slice slice) {
   }
   /* we have to be reading a message to know what to do here */
   if (!call->reading_message) {
+    gpr_slice_unref(slice);
     cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT,
                        "Received payload data while not reading a message");
     return 0;
@@ -1245,7 +1256,11 @@ static grpc_call_error start_ioreq(grpc_call *call, const grpc_ioreq *reqs,
                            GRPC_MDSTR_REF(reqs[i].data.send_status.details));
       }
     }
-    have_ops |= (gpr_uint16)(1u << op);
+    /* NB: the following integer arithmetic operation needs to be in its
+     * expanded form due to the "integral promotion" performed (see section
+     * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+     * is then required to avoid the compiler warning */
+    have_ops = (gpr_uint16)(have_ops | (1u << op));
 
     call->request_data[op] = data;
     call->request_flags[op] = reqs[i].flags;
@@ -1280,6 +1295,8 @@ void grpc_call_destroy(grpc_call *c) {
   grpc_call *parent = c->parent;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE("grpc_call_destroy(c=%p)", 1, (c));
+
   if (parent) {
     gpr_mu_lock(&parent->mu);
     if (c == parent->first_child) {
@@ -1308,6 +1325,7 @@ void grpc_call_destroy(grpc_call *c) {
 }
 
 grpc_call_error grpc_call_cancel(grpc_call *call, void *reserved) {
+  GRPC_API_TRACE("grpc_call_cancel(call=%p, reserved=%p)", 2, (call, reserved));
   GPR_ASSERT(!reserved);
   return grpc_call_cancel_with_status(call, GRPC_STATUS_CANCELLED, "Cancelled",
                                       NULL);
@@ -1319,6 +1337,10 @@ grpc_call_error grpc_call_cancel_with_status(grpc_call *c,
                                              void *reserved) {
   grpc_call_error r;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GRPC_API_TRACE(
+      "grpc_call_cancel_with_status("
+      "c=%p, status=%d, description=%s, reserved=%p)",
+      4, (c, (int)status, description, reserved));
   GPR_ASSERT(reserved == NULL);
   lock(c);
   r = cancel_with_status(c, status, description);
@@ -1386,6 +1408,7 @@ char *grpc_call_get_peer(grpc_call *call) {
   grpc_call_element *elem = CALL_ELEM_FROM_CALL(call, 0);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   char *result = elem->filter->get_peer(&exec_ctx, elem);
+  GRPC_API_TRACE("grpc_call_get_peer(%p)", 1, (call));
   grpc_exec_ctx_finish(&exec_ctx);
   return result;
 }
@@ -1580,6 +1603,10 @@ grpc_call_error grpc_call_start_batch(grpc_call *call, const grpc_op *ops,
   grpc_call_error error;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE(
+      "grpc_call_start_batch(call=%p, ops=%p, nops=%lu, tag=%p, reserved=%p)",
+      5, (call, ops, (unsigned long)nops, tag, reserved));
+
   if (reserved != NULL) {
     error = GRPC_CALL_ERROR;
     goto done;
diff --git a/src/core/surface/call.h b/src/core/surface/call.h
index 7ac0c92ab73cb248c65f06115088cc8b4adddb6e..f421a81619f7854c0f3024afea7721feadc5876c 100644
--- a/src/core/surface/call.h
+++ b/src/core/surface/call.h
@@ -36,6 +36,8 @@
 
 #include "src/core/channel/channel_stack.h"
 #include "src/core/channel/context.h"
+#include "src/core/surface/api_trace.h"
+#include "src/core/surface/surface_trace.h"
 #include <grpc/grpc.h>
 
 #ifdef __cplusplus
@@ -128,8 +130,6 @@ grpc_call_stack *grpc_call_get_call_stack(grpc_call *call);
 /* Given the top call_element, get the call object. */
 grpc_call *grpc_call_from_top_element(grpc_call_element *surface_element);
 
-extern int grpc_trace_batch;
-
 void grpc_call_log_batch(char *file, int line, gpr_log_severity severity,
                          grpc_call *call, const grpc_op *ops, size_t nops,
                          void *tag);
@@ -155,17 +155,17 @@ void grpc_call_context_set(grpc_call *call, grpc_context_index elem,
 void *grpc_call_context_get(grpc_call *call, grpc_context_index elem);
 
 #define GRPC_CALL_LOG_BATCH(sev, call, ops, nops, tag) \
-  if (grpc_trace_batch) grpc_call_log_batch(sev, call, ops, nops, tag)
+  if (grpc_api_trace) grpc_call_log_batch(sev, call, ops, nops, tag)
 
 #define GRPC_SERVER_LOG_REQUEST_CALL(sev, server, call, details,             \
                                      initial_metadata, cq_bound_to_call,     \
                                      cq_for_notifications, tag)              \
-  if (grpc_trace_batch)                                                      \
+  if (grpc_api_trace)                                                        \
   grpc_server_log_request_call(sev, server, call, details, initial_metadata, \
                                cq_bound_to_call, cq_for_notifications, tag)
 
 #define GRPC_SERVER_LOG_SHUTDOWN(sev, server, cq, tag) \
-  if (grpc_trace_batch) grpc_server_log_shutdown(sev, server, cq, tag)
+  if (grpc_api_trace) grpc_server_log_shutdown(sev, server, cq, tag)
 
 gpr_uint8 grpc_call_is_client(grpc_call *call);
 
diff --git a/src/core/surface/call_details.c b/src/core/surface/call_details.c
index 65d2d1da5b230c703a2c2ffd9e9328b056163fdb..60f0029819c02c88699d6ab7088246e9ec03d64d 100644
--- a/src/core/surface/call_details.c
+++ b/src/core/surface/call_details.c
@@ -36,11 +36,15 @@
 
 #include <string.h>
 
+#include "src/core/surface/api_trace.h"
+
 void grpc_call_details_init(grpc_call_details* cd) {
+  GRPC_API_TRACE("grpc_call_details_init(cd=%p)", 1, (cd));
   memset(cd, 0, sizeof(*cd));
 }
 
 void grpc_call_details_destroy(grpc_call_details* cd) {
+  GRPC_API_TRACE("grpc_call_details_destroy(cd=%p)", 1, (cd));
   gpr_free(cd->method);
   gpr_free(cd->host);
 }
diff --git a/src/core/surface/call_log_batch.c b/src/core/surface/call_log_batch.c
index 5a3ef1e5f4b5f83905cdcd6010032dba98b0b0c6..2dd9737cf875ae60a331ddaddbec3fc81d659da3 100644
--- a/src/core/surface/call_log_batch.c
+++ b/src/core/surface/call_log_batch.c
@@ -37,8 +37,6 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 
-int grpc_trace_batch = 0;
-
 static void add_metadata(gpr_strvec *b, const grpc_metadata *md, size_t count) {
   size_t i;
   for (i = 0; i < count; i++) {
diff --git a/src/core/surface/channel.c b/src/core/surface/channel.c
index aed7a79e4ef28c8a35cf1c32207fdf91a61d7297..a9a5f828f27eca8e34b26fbbc45871abac554eb2 100644
--- a/src/core/surface/channel.c
+++ b/src/core/surface/channel.c
@@ -43,6 +43,7 @@
 #include "src/core/client_config/resolver_registry.h"
 #include "src/core/iomgr/iomgr.h"
 #include "src/core/support/string.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/call.h"
 #include "src/core/surface/init.h"
 
@@ -184,6 +185,7 @@ grpc_channel *grpc_channel_create_from_filters(
 }
 
 char *grpc_channel_get_target(grpc_channel *channel) {
+  GRPC_API_TRACE("grpc_channel_get_target(channel=%p)", 1, (channel));
   return gpr_strdup(channel->target);
 }
 
@@ -213,6 +215,15 @@ grpc_call *grpc_channel_create_call(grpc_channel *channel,
                                     grpc_completion_queue *cq,
                                     const char *method, const char *host,
                                     gpr_timespec deadline, void *reserved) {
+  GRPC_API_TRACE(
+      "grpc_channel_create_call("
+      "channel=%p, parent_call=%p, propagation_mask=%x, cq=%p, method=%s, "
+      "host=%s, "
+      "deadline=gpr_timespec { tv_sec: %ld, tv_nsec: %d, clock_type: %d }, "
+      "reserved=%p)",
+      10, (channel, parent_call, (unsigned)propagation_mask, cq, method, host,
+           (long)deadline.tv_sec, deadline.tv_nsec, (int)deadline.clock_type,
+           reserved));
   GPR_ASSERT(!reserved);
   return grpc_channel_create_call_internal(
       channel, parent_call, propagation_mask, cq,
@@ -230,6 +241,9 @@ grpc_call *grpc_channel_create_call(grpc_channel *channel,
 void *grpc_channel_register_call(grpc_channel *channel, const char *method,
                                  const char *host, void *reserved) {
   registered_call *rc = gpr_malloc(sizeof(registered_call));
+  GRPC_API_TRACE(
+      "grpc_channel_register_call(channel=%p, method=%s, host=%s, reserved=%p)",
+      4, (channel, method, host, reserved));
   GPR_ASSERT(!reserved);
   rc->path = grpc_mdelem_from_metadata_strings(
       channel->metadata_context, GRPC_MDSTR_REF(channel->path_string),
@@ -252,6 +266,15 @@ grpc_call *grpc_channel_create_registered_call(
     grpc_completion_queue *completion_queue, void *registered_call_handle,
     gpr_timespec deadline, void *reserved) {
   registered_call *rc = registered_call_handle;
+  GRPC_API_TRACE(
+      "grpc_channel_create_registered_call("
+      "channel=%p, parent_call=%p, propagation_mask=%x, completion_queue=%p, "
+      "registered_call_handle=%p, "
+      "deadline=gpr_timespec { tv_sec: %ld, tv_nsec: %d, clock_type: %d }, "
+      "reserved=%p)",
+      9, (channel, parent_call, (unsigned)propagation_mask, completion_queue,
+          registered_call_handle, (long)deadline.tv_sec, deadline.tv_nsec,
+          (int)deadline.clock_type, reserved));
   GPR_ASSERT(!reserved);
   return grpc_channel_create_call_internal(
       channel, parent_call, propagation_mask, completion_queue,
@@ -317,6 +340,7 @@ void grpc_channel_destroy(grpc_channel *channel) {
   grpc_transport_op op;
   grpc_channel_element *elem;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GRPC_API_TRACE("grpc_channel_destroy(channel=%p)", 1, (channel));
   memset(&op, 0, sizeof(op));
   op.disconnect = 1;
   elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
diff --git a/src/core/surface/channel_connectivity.c b/src/core/surface/channel_connectivity.c
index 47cbab154f8a3b3db038703edb015aa25af7bc08..f72fb0414261d3e63ca1dbc29dcec66c5666b317 100644
--- a/src/core/surface/channel_connectivity.c
+++ b/src/core/surface/channel_connectivity.c
@@ -38,6 +38,7 @@
 
 #include "src/core/channel/client_channel.h"
 #include "src/core/iomgr/alarm.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/completion_queue.h"
 
 grpc_connectivity_state grpc_channel_check_connectivity_state(
@@ -47,6 +48,9 @@ grpc_connectivity_state grpc_channel_check_connectivity_state(
       grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_connectivity_state state;
+  GRPC_API_TRACE(
+      "grpc_channel_check_connectivity_state(channel=%p, try_to_connect=%d)", 2,
+      (channel, try_to_connect));
   if (client_channel_elem->filter != &grpc_client_channel_filter) {
     gpr_log(GPR_ERROR,
             "grpc_channel_check_connectivity_state called on something that is "
@@ -175,6 +179,14 @@ void grpc_channel_watch_connectivity_state(
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   state_watcher *w = gpr_malloc(sizeof(*w));
 
+  GRPC_API_TRACE(
+      "grpc_channel_watch_connectivity_state("
+      "channel=%p, last_observed_state=%d, "
+      "deadline=gpr_timespec { tv_sec: %ld, tv_nsec: %d, clock_type: %d }, "
+      "cq=%p, tag=%p)",
+      7, (channel, (int)last_observed_state, (long)deadline.tv_sec,
+          deadline.tv_nsec, (int)deadline.clock_type, cq, tag));
+
   grpc_cq_begin_op(cq);
 
   gpr_mu_init(&w->mu);
diff --git a/src/core/surface/channel_create.c b/src/core/surface/channel_create.c
index 05591ce27f94549680548c6323415cc2a3590732..51d9130b63d5711989a12281a20a6077b3958f69 100644
--- a/src/core/surface/channel_create.c
+++ b/src/core/surface/channel_create.c
@@ -45,6 +45,7 @@
 #include "src/core/channel/http_client_filter.h"
 #include "src/core/client_config/resolver_registry.h"
 #include "src/core/iomgr/tcp_client.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/channel.h"
 #include "src/core/transport/chttp2_transport.h"
 
@@ -184,6 +185,9 @@ grpc_channel *grpc_insecure_channel_create(const char *target,
   grpc_mdctx *mdctx = grpc_mdctx_create();
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   size_t n = 0;
+  GRPC_API_TRACE(
+      "grpc_insecure_channel_create(target=%p, args=%p, reserved=%p)", 3,
+      (target, args, reserved));
   GPR_ASSERT(!reserved);
   if (grpc_channel_args_is_census_enabled(args)) {
     filters[n++] = &grpc_client_census_filter;
diff --git a/src/core/surface/completion_queue.c b/src/core/surface/completion_queue.c
index 5dac8ebcf8b264be9306d4c5f8b6ae875ce403bb..e818ccba488b86c15360751306988fe2bf3820b7 100644
--- a/src/core/surface/completion_queue.c
+++ b/src/core/surface/completion_queue.c
@@ -38,6 +38,7 @@
 
 #include "src/core/iomgr/pollset.h"
 #include "src/core/support/string.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/call.h"
 #include "src/core/surface/event_string.h"
 #include "src/core/surface/surface_trace.h"
@@ -75,6 +76,7 @@ static void on_pollset_destroy_done(grpc_exec_ctx *exec_ctx, void *cc,
 
 grpc_completion_queue *grpc_completion_queue_create(void *reserved) {
   grpc_completion_queue *cc = gpr_malloc(sizeof(grpc_completion_queue));
+  GRPC_API_TRACE("grpc_completion_queue_create(reserved=%p)", 1, (reserved));
   GPR_ASSERT(!reserved);
   memset(cc, 0, sizeof(*cc));
   /* Initial ref is dropped by grpc_completion_queue_shutdown */
@@ -182,6 +184,13 @@ grpc_event grpc_completion_queue_next(grpc_completion_queue *cc,
   gpr_timespec now;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE(
+      "grpc_completion_queue_next("
+      "cc=%p, "
+      "deadline=gpr_timespec { tv_sec: %ld, tv_nsec: %d, clock_type: %d }, "
+      "reserved=%p)",
+      5, (cc, (long)deadline.tv_sec, deadline.tv_nsec, (int)deadline.clock_type,
+          reserved));
   GPR_ASSERT(!reserved);
 
   deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC);
@@ -259,6 +268,13 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag,
   int first_loop = 1;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE(
+      "grpc_completion_queue_pluck("
+      "cc=%p, tag=%p, "
+      "deadline=gpr_timespec { tv_sec: %ld, tv_nsec: %d, clock_type: %d }, "
+      "reserved=%p)",
+      6, (cc, tag, (long)deadline.tv_sec, deadline.tv_nsec,
+          (int)deadline.clock_type, reserved));
   GPR_ASSERT(!reserved);
 
   deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC);
@@ -324,6 +340,7 @@ done:
    to zero here, then enter shutdown mode and wake up any waiters */
 void grpc_completion_queue_shutdown(grpc_completion_queue *cc) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GRPC_API_TRACE("grpc_completion_queue_shutdown(cc=%p)", 1, (cc));
   gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset));
   if (cc->shutdown_called) {
     gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
@@ -343,6 +360,7 @@ void grpc_completion_queue_shutdown(grpc_completion_queue *cc) {
 }
 
 void grpc_completion_queue_destroy(grpc_completion_queue *cc) {
+  GRPC_API_TRACE("grpc_completion_queue_destroy(cc=%p)", 1, (cc));
   grpc_completion_queue_shutdown(cc);
   GRPC_CQ_INTERNAL_UNREF(cc, "destroy");
 }
diff --git a/src/core/surface/init.c b/src/core/surface/init.c
index 93c27c77bf6d96e672f64a35b0db5b990f194241..95011cab178a3fe42d0d92b90216b96c3c319b09 100644
--- a/src/core/surface/init.c
+++ b/src/core/surface/init.c
@@ -49,6 +49,7 @@
 #include "src/core/debug/trace.h"
 #include "src/core/iomgr/iomgr.h"
 #include "src/core/profiling/timers.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/call.h"
 #include "src/core/surface/init.h"
 #include "src/core/surface/surface_trace.h"
@@ -75,6 +76,8 @@ static grpc_plugin g_all_of_the_plugins[MAX_PLUGINS];
 static int g_number_of_plugins = 0;
 
 void grpc_register_plugin(void (*init)(void), void (*destroy)(void)) {
+  GRPC_API_TRACE("grpc_register_plugin(init=%lx, destroy=%lx)", 2,
+                 ((unsigned long)init, (unsigned long)destroy));
   GPR_ASSERT(g_number_of_plugins != MAX_PLUGINS);
   g_all_of_the_plugins[g_number_of_plugins].init = init;
   g_all_of_the_plugins[g_number_of_plugins].destroy = destroy;
@@ -98,11 +101,10 @@ void grpc_init(void) {
 #ifdef GPR_POSIX_SOCKET
     grpc_register_resolver_type(grpc_unix_resolver_factory_create());
 #endif
+    grpc_register_tracer("api", &grpc_api_trace);
     grpc_register_tracer("channel", &grpc_trace_channel);
-    grpc_register_tracer("surface", &grpc_surface_trace);
     grpc_register_tracer("http", &grpc_http_trace);
     grpc_register_tracer("flowctl", &grpc_flowctl_trace);
-    grpc_register_tracer("batch", &grpc_trace_batch);
     grpc_register_tracer("connectivity_state", &grpc_connectivity_state_trace);
     grpc_security_pre_init();
     grpc_iomgr_init();
@@ -121,10 +123,12 @@ void grpc_init(void) {
     }
   }
   gpr_mu_unlock(&g_init_mu);
+  GRPC_API_TRACE("grpc_init(void)", 0, ());
 }
 
 void grpc_shutdown(void) {
   int i;
+  GRPC_API_TRACE("grpc_shutdown(void)", 0, ());
   gpr_mu_lock(&g_init_mu);
   if (--g_initializations == 0) {
     grpc_iomgr_shutdown();
diff --git a/src/core/surface/lame_client.c b/src/core/surface/lame_client.c
index 0b22d225d03b651482f71b004759f6385b664c0a..e72264fbcdbe2994c4fac1b31ca0f979a49df326 100644
--- a/src/core/surface/lame_client.c
+++ b/src/core/surface/lame_client.c
@@ -37,6 +37,7 @@
 
 #include "src/core/channel/channel_stack.h"
 #include "src/core/support/string.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/channel.h"
 #include "src/core/surface/call.h"
 #include <grpc/support/alloc.h>
@@ -133,16 +134,9 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {}
 
 static const grpc_channel_filter lame_filter = {
-    lame_start_transport_stream_op,
-    lame_start_transport_op,
-    sizeof(call_data),
-    init_call_elem,
-    destroy_call_elem,
-    sizeof(channel_data),
-    init_channel_elem,
-    destroy_channel_elem,
-    lame_get_peer,
-    "lame-client",
+    lame_start_transport_stream_op, lame_start_transport_op, sizeof(call_data),
+    init_call_elem, destroy_call_elem, sizeof(channel_data), init_channel_elem,
+    destroy_channel_elem, lame_get_peer, "lame-client",
 };
 
 #define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack *)((c) + 1))
@@ -158,6 +152,10 @@ grpc_channel *grpc_lame_client_channel_create(const char *target,
   channel = grpc_channel_create_from_filters(&exec_ctx, target, filters, 1,
                                              NULL, grpc_mdctx_create(), 1);
   elem = grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
+  GRPC_API_TRACE(
+      "grpc_lame_client_channel_create(target=%s, error_code=%d, "
+      "error_message=%s)",
+      3, (target, (int)error_code, error_message));
   GPR_ASSERT(elem->filter == &lame_filter);
   chand = (channel_data *)elem->channel_data;
   chand->error_code = error_code;
diff --git a/src/core/surface/metadata_array.c b/src/core/surface/metadata_array.c
index 648c57926670b162ddcebd6eb705b3e0d3c159dc..4c7bf17835aadabecd9a88cb3499c25770616490 100644
--- a/src/core/surface/metadata_array.c
+++ b/src/core/surface/metadata_array.c
@@ -36,10 +36,14 @@
 
 #include <string.h>
 
+#include "src/core/surface/api_trace.h"
+
 void grpc_metadata_array_init(grpc_metadata_array* array) {
+  GRPC_API_TRACE("grpc_metadata_array_init(array=%p)", 1, (array));
   memset(array, 0, sizeof(*array));
 }
 
 void grpc_metadata_array_destroy(grpc_metadata_array* array) {
+  GRPC_API_TRACE("grpc_metadata_array_destroy(array=%p)", 1, (array));
   gpr_free(array->metadata);
 }
diff --git a/src/core/surface/secure_channel_create.c b/src/core/surface/secure_channel_create.c
index d6070a54a89a6396680ca0afdd1d1549240097fb..1282ee99ed7ca18f315482ed763cb0d5527e6ce7 100644
--- a/src/core/surface/secure_channel_create.c
+++ b/src/core/surface/secure_channel_create.c
@@ -47,6 +47,7 @@
 #include "src/core/iomgr/tcp_client.h"
 #include "src/core/security/auth_filters.h"
 #include "src/core/security/credentials.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/channel.h"
 #include "src/core/transport/chttp2_transport.h"
 #include "src/core/tsi/transport_security_interface.h"
@@ -246,7 +247,12 @@ grpc_channel *grpc_secure_channel_create(grpc_credentials *creds,
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   size_t n = 0;
 
+  GRPC_API_TRACE(
+      "grpc_secure_channel_create(creds=%p, target=%s, args=%p, "
+      "reserved=%p)",
+      4, (creds, target, args, reserved));
   GPR_ASSERT(reserved == NULL);
+
   if (grpc_find_security_connector_in_args(args) != NULL) {
     gpr_log(GPR_ERROR, "Cannot set security context in channel args.");
     grpc_exec_ctx_finish(&exec_ctx);
diff --git a/src/core/surface/server.c b/src/core/surface/server.c
index 41191ebf26bfde900c8831e16691c5b570bd3e39..819226278dc3ca73ef631cd5e9b3e80b8f96b280 100644
--- a/src/core/surface/server.c
+++ b/src/core/surface/server.c
@@ -48,6 +48,7 @@
 #include "src/core/iomgr/iomgr.h"
 #include "src/core/support/stack_lockfree.h"
 #include "src/core/support/string.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/call.h"
 #include "src/core/surface/channel.h"
 #include "src/core/surface/completion_queue.h"
@@ -767,22 +768,18 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 }
 
 static const grpc_channel_filter server_surface_filter = {
-    server_start_transport_stream_op,
-    grpc_channel_next_op,
-    sizeof(call_data),
-    init_call_elem,
-    destroy_call_elem,
-    sizeof(channel_data),
-    init_channel_elem,
-    destroy_channel_elem,
-    grpc_call_next_get_peer,
-    "server",
+    server_start_transport_stream_op, grpc_channel_next_op, sizeof(call_data),
+    init_call_elem, destroy_call_elem, sizeof(channel_data), init_channel_elem,
+    destroy_channel_elem, grpc_call_next_get_peer, "server",
 };
 
 void grpc_server_register_completion_queue(grpc_server *server,
                                            grpc_completion_queue *cq,
                                            void *reserved) {
   size_t i, n;
+  GRPC_API_TRACE(
+      "grpc_server_register_completion_queue(server=%p, cq=%p, reserved=%p)", 3,
+      (server, cq, reserved));
   GPR_ASSERT(!reserved);
   for (i = 0; i < server->cq_count; i++) {
     if (server->cqs[i] == cq) return;
@@ -861,6 +858,8 @@ static int streq(const char *a, const char *b) {
 void *grpc_server_register_method(grpc_server *server, const char *method,
                                   const char *host) {
   registered_method *m;
+  GRPC_API_TRACE("grpc_server_register_method(server=%p, method=%s, host=%s)",
+                 3, (server, method, host));
   if (!method) {
     gpr_log(GPR_ERROR,
             "grpc_server_register_method method string cannot be NULL");
@@ -888,6 +887,8 @@ void grpc_server_start(grpc_server *server) {
   size_t i;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE("grpc_server_start(server=%p)", 1, (server));
+
   server->pollsets = gpr_malloc(sizeof(grpc_pollset *) * server->cq_count);
   for (i = 0; i < server->cq_count; i++) {
     server->pollsets[i] = grpc_cq_pollset(server->cqs[i]);
@@ -940,8 +941,7 @@ void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s,
   channel = grpc_channel_create_from_filters(exec_ctx, NULL, filters,
                                              num_filters, args, mdctx, 0);
   chand = (channel_data *)grpc_channel_stack_element(
-              grpc_channel_get_channel_stack(channel), 0)
-              ->channel_data;
+              grpc_channel_get_channel_stack(channel), 0)->channel_data;
   chand->server = s;
   server_ref(s);
   chand->channel = channel;
@@ -962,7 +962,7 @@ void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s,
       method = grpc_mdstr_from_string(mdctx, rm->method);
       hash = GRPC_MDSTR_KV_HASH(host ? host->hash : 0, method->hash);
       for (probes = 0; chand->registered_methods[(hash + probes) % slots]
-                           .server_registered_method != NULL;
+                               .server_registered_method != NULL;
            probes++)
         ;
       if (probes > max_probes) max_probes = probes;
@@ -1019,6 +1019,9 @@ void grpc_server_shutdown_and_notify(grpc_server *server,
   channel_broadcaster broadcaster;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE("grpc_server_shutdown_and_notify(server=%p, cq=%p, tag=%p)", 3,
+                 (server, cq, tag));
+
   GRPC_SERVER_LOG_SHUTDOWN(GPR_INFO, server, cq, tag);
 
   /* lock, and gather up some stuff to do */
@@ -1071,6 +1074,8 @@ void grpc_server_cancel_all_calls(grpc_server *server) {
   channel_broadcaster broadcaster;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE("grpc_server_cancel_all_calls(server=%p)", 1, (server));
+
   gpr_mu_lock(&server->mu_global);
   channel_broadcaster_init(server, &broadcaster);
   gpr_mu_unlock(&server->mu_global);
@@ -1083,6 +1088,8 @@ void grpc_server_destroy(grpc_server *server) {
   listener *l;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE("grpc_server_destroy(server=%p)", 1, (server));
+
   gpr_mu_lock(&server->mu_global);
   GPR_ASSERT(gpr_atm_acq_load(&server->shutdown_flag) || !server->listeners);
   GPR_ASSERT(server->listeners_destroyed == num_listeners(server));
@@ -1177,6 +1184,12 @@ grpc_call_error grpc_server_request_call(
   grpc_call_error error;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   requested_call *rc = gpr_malloc(sizeof(*rc));
+  GRPC_API_TRACE(
+      "grpc_server_request_call("
+      "server=%p, call=%p, details=%p, initial_metadata=%p, "
+      "cq_bound_to_call=%p, cq_for_notification=%p, tag%p)",
+      7, (server, call, details, initial_metadata, cq_bound_to_call,
+          cq_for_notification, tag));
   GRPC_SERVER_LOG_REQUEST_CALL(GPR_INFO, server, call, details,
                                initial_metadata, cq_bound_to_call,
                                cq_for_notification, tag);
@@ -1210,6 +1223,13 @@ grpc_call_error grpc_server_request_registered_call(
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   requested_call *rc = gpr_malloc(sizeof(*rc));
   registered_method *rm = rmp;
+  GRPC_API_TRACE(
+      "grpc_server_request_registered_call("
+      "server=%p, rmp=%p, call=%p, deadline=%p, initial_metadata=%p, "
+      "optional_payload=%p, cq_bound_to_call=%p, cq_for_notification=%p, "
+      "tag=%p)",
+      9, (server, rmp, call, deadline, initial_metadata, optional_payload,
+          cq_bound_to_call, cq_for_notification, tag));
   if (!grpc_cq_is_server_cq(cq_for_notification)) {
     gpr_free(rc);
     error = GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE;
diff --git a/src/core/surface/server_chttp2.c b/src/core/surface/server_chttp2.c
index 3904ce969dd1b3f1252bcef29edf1654a15071f3..580b91573c208c0ab8f36d8b1178fac3dda80b4b 100644
--- a/src/core/surface/server_chttp2.c
+++ b/src/core/surface/server_chttp2.c
@@ -36,6 +36,7 @@
 #include "src/core/channel/http_server_filter.h"
 #include "src/core/iomgr/resolve_address.h"
 #include "src/core/iomgr/tcp_server.h"
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/server.h"
 #include "src/core/transport/chttp2_transport.h"
 #include <grpc/support/alloc.h>
@@ -92,6 +93,9 @@ int grpc_server_add_insecure_http2_port(grpc_server *server, const char *addr) {
   int port_temp;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
+  GRPC_API_TRACE("grpc_server_add_insecure_http2_port(server=%p, addr=%s)", 2,
+                 (server, addr));
+
   resolved = grpc_blocking_resolve_address(addr, "http");
   if (!resolved) {
     goto error;
diff --git a/src/core/surface/server_create.c b/src/core/surface/server_create.c
index fc7ae820f53187ecb0f8ae8638e0a0696fb25519..c7811a6d8812e6be1a70175cfa8c620012667ea6 100644
--- a/src/core/surface/server_create.c
+++ b/src/core/surface/server_create.c
@@ -32,13 +32,14 @@
  */
 
 #include <grpc/grpc.h>
+#include "src/core/surface/api_trace.h"
 #include "src/core/surface/completion_queue.h"
 #include "src/core/surface/server.h"
 #include "src/core/channel/compress_filter.h"
 
 grpc_server *grpc_server_create(const grpc_channel_args *args, void *reserved) {
   const grpc_channel_filter *filters[] = {&grpc_compress_filter};
-  (void)reserved;
+  GRPC_API_TRACE("grpc_server_create(%p, %p)", 2, (args, reserved));
   return grpc_server_create_from_filters(filters, GPR_ARRAY_SIZE(filters),
                                          args);
 }
diff --git a/src/core/surface/surface_trace.h b/src/core/surface/surface_trace.h
index 2b4728e2b4b0072915c8a8ed86e29fdaa0ee36dd..93b2859ac5b273588b4bf7cbee52ecbda9ea5e3f 100644
--- a/src/core/surface/surface_trace.h
+++ b/src/core/surface/surface_trace.h
@@ -35,12 +35,11 @@
 #define GRPC_INTERNAL_CORE_SURFACE_SURFACE_TRACE_H
 
 #include "src/core/debug/trace.h"
+#include "src/core/surface/api_trace.h"
 #include <grpc/support/log.h>
 
-extern int grpc_surface_trace;
-
 #define GRPC_SURFACE_TRACE_RETURNED_EVENT(cq, event)    \
-  if (grpc_surface_trace) {                             \
+  if (grpc_api_trace) {                                 \
     char *_ev = grpc_event_string(event);               \
     gpr_log(GPR_INFO, "RETURN_EVENT[%p]: %s", cq, _ev); \
     gpr_free(_ev);                                      \
diff --git a/src/core/surface/version.c b/src/core/surface/version.c
index 4b90e06a043b14768281b5fdd9f8bd5535cade89..e559d51448a4f91440e21e249392c79d91b02e60 100644
--- a/src/core/surface/version.c
+++ b/src/core/surface/version.c
@@ -36,6 +36,4 @@
 
 #include <grpc/grpc.h>
 
-const char *grpc_version_string(void) {
-	return "0.11.0.0";
-}
+const char *grpc_version_string(void) { return "0.11.0.0"; }
diff --git a/src/core/transport/chttp2/bin_encoder.c b/src/core/transport/chttp2/bin_encoder.c
index e21d80008321900ba715bef22ca1bb6a5962a1f6..9c9070ede4f46a19a3b03dcaac8a06fdea516059 100644
--- a/src/core/transport/chttp2/bin_encoder.c
+++ b/src/core/transport/chttp2/bin_encoder.c
@@ -46,18 +46,70 @@ typedef struct {
   gpr_uint8 length;
 } b64_huff_sym;
 
-static const b64_huff_sym huff_alphabet[64] = {
-    {0x21, 6}, {0x5d, 7}, {0x5e, 7},   {0x5f, 7}, {0x60, 7}, {0x61, 7},
-    {0x62, 7}, {0x63, 7}, {0x64, 7},   {0x65, 7}, {0x66, 7}, {0x67, 7},
-    {0x68, 7}, {0x69, 7}, {0x6a, 7},   {0x6b, 7}, {0x6c, 7}, {0x6d, 7},
-    {0x6e, 7}, {0x6f, 7}, {0x70, 7},   {0x71, 7}, {0x72, 7}, {0xfc, 8},
-    {0x73, 7}, {0xfd, 8}, {0x3, 5},    {0x23, 6}, {0x4, 5},  {0x24, 6},
-    {0x5, 5},  {0x25, 6}, {0x26, 6},   {0x27, 6}, {0x6, 5},  {0x74, 7},
-    {0x75, 7}, {0x28, 6}, {0x29, 6},   {0x2a, 6}, {0x7, 5},  {0x2b, 6},
-    {0x76, 7}, {0x2c, 6}, {0x8, 5},    {0x9, 5},  {0x2d, 6}, {0x77, 7},
-    {0x78, 7}, {0x79, 7}, {0x7a, 7},   {0x7b, 7}, {0x0, 5},  {0x1, 5},
-    {0x2, 5},  {0x19, 6}, {0x1a, 6},   {0x1b, 6}, {0x1c, 6}, {0x1d, 6},
-    {0x1e, 6}, {0x1f, 6}, {0x7fb, 11}, {0x18, 6}};
+static const b64_huff_sym huff_alphabet[64] = {{0x21, 6},
+                                               {0x5d, 7},
+                                               {0x5e, 7},
+                                               {0x5f, 7},
+                                               {0x60, 7},
+                                               {0x61, 7},
+                                               {0x62, 7},
+                                               {0x63, 7},
+                                               {0x64, 7},
+                                               {0x65, 7},
+                                               {0x66, 7},
+                                               {0x67, 7},
+                                               {0x68, 7},
+                                               {0x69, 7},
+                                               {0x6a, 7},
+                                               {0x6b, 7},
+                                               {0x6c, 7},
+                                               {0x6d, 7},
+                                               {0x6e, 7},
+                                               {0x6f, 7},
+                                               {0x70, 7},
+                                               {0x71, 7},
+                                               {0x72, 7},
+                                               {0xfc, 8},
+                                               {0x73, 7},
+                                               {0xfd, 8},
+                                               {0x3, 5},
+                                               {0x23, 6},
+                                               {0x4, 5},
+                                               {0x24, 6},
+                                               {0x5, 5},
+                                               {0x25, 6},
+                                               {0x26, 6},
+                                               {0x27, 6},
+                                               {0x6, 5},
+                                               {0x74, 7},
+                                               {0x75, 7},
+                                               {0x28, 6},
+                                               {0x29, 6},
+                                               {0x2a, 6},
+                                               {0x7, 5},
+                                               {0x2b, 6},
+                                               {0x76, 7},
+                                               {0x2c, 6},
+                                               {0x8, 5},
+                                               {0x9, 5},
+                                               {0x2d, 6},
+                                               {0x77, 7},
+                                               {0x78, 7},
+                                               {0x79, 7},
+                                               {0x7a, 7},
+                                               {0x7b, 7},
+                                               {0x0, 5},
+                                               {0x1, 5},
+                                               {0x2, 5},
+                                               {0x19, 6},
+                                               {0x1a, 6},
+                                               {0x1b, 6},
+                                               {0x1c, 6},
+                                               {0x1d, 6},
+                                               {0x1e, 6},
+                                               {0x1f, 6},
+                                               {0x7fb, 11},
+                                               {0x18, 6}};
 
 static const gpr_uint8 tail_xtra[3] = {0, 2, 3};
 
@@ -133,8 +185,12 @@ gpr_slice grpc_chttp2_huffman_compress(gpr_slice input) {
   }
 
   if (temp_length) {
-    *out++ = (gpr_uint8)(temp << (8u - temp_length)) |
-             (gpr_uint8)(0xffu >> temp_length);
+    /* NB: the following integer arithmetic operation needs to be in its
+     * expanded form due to the "integral promotion" performed (see section
+     * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+     * is then required to avoid the compiler warning */
+    *out++ = (gpr_uint8)((gpr_uint8)(temp << (8u - temp_length)) |
+                         (gpr_uint8)(0xffu >> temp_length));
   }
 
   GPR_ASSERT(out == GPR_SLICE_END_PTR(output));
@@ -213,8 +269,12 @@ gpr_slice grpc_chttp2_base64_encode_and_huffman_compress(gpr_slice input) {
   }
 
   if (out.temp_length) {
-    *out.out++ = (gpr_uint8)(out.temp << (8u - out.temp_length)) |
-                 (gpr_uint8)(0xffu >> out.temp_length);
+    /* NB: the following integer arithmetic operation needs to be in its
+     * expanded form due to the "integral promotion" performed (see section
+     * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+     * is then required to avoid the compiler warning */
+    *out.out++ = (gpr_uint8)((gpr_uint8)(out.temp << (8u - out.temp_length)) |
+                             (gpr_uint8)(0xffu >> out.temp_length));
   }
 
   GPR_ASSERT(out.out <= GPR_SLICE_END_PTR(output));
diff --git a/src/core/transport/chttp2/hpack_parser.c b/src/core/transport/chttp2/hpack_parser.c
index 3b0a5e7207cadaa5bdf602f472ec7c23b9ee84b0..20ea51337517bd0fa65a18a8482981aee6bc11a9 100644
--- a/src/core/transport/chttp2/hpack_parser.c
+++ b/src/core/transport/chttp2/hpack_parser.c
@@ -150,12 +150,10 @@ typedef enum {
 /* jump table of parse state functions -- order must match first_byte_type
    above */
 static const grpc_chttp2_hpack_parser_state first_byte_action[] = {
-    parse_indexed_field,   parse_indexed_field_x,
-    parse_lithdr_incidx,   parse_lithdr_incidx_x,
-    parse_lithdr_incidx_v, parse_lithdr_notidx,
-    parse_lithdr_notidx_x, parse_lithdr_notidx_v,
-    parse_lithdr_nvridx,   parse_lithdr_nvridx_x,
-    parse_lithdr_nvridx_v, parse_max_tbl_size,
+    parse_indexed_field,   parse_indexed_field_x, parse_lithdr_incidx,
+    parse_lithdr_incidx_x, parse_lithdr_incidx_v, parse_lithdr_notidx,
+    parse_lithdr_notidx_x, parse_lithdr_notidx_v, parse_lithdr_nvridx,
+    parse_lithdr_nvridx_x, parse_lithdr_nvridx_v, parse_max_tbl_size,
     parse_max_tbl_size_x,  parse_error};
 
 /* indexes the first byte to a parse state function - generated by
diff --git a/src/core/transport/chttp2/hpack_table.c b/src/core/transport/chttp2/hpack_table.c
index d5cb752789f1862cc2ac908dfe9cee651472c772..c442c2c34139c50fd4ebfe6ae3b029a0c8fdca82 100644
--- a/src/core/transport/chttp2/hpack_table.c
+++ b/src/core/transport/chttp2/hpack_table.c
@@ -193,15 +193,15 @@ void grpc_chttp2_hptbl_destroy(grpc_chttp2_hptbl *tbl) {
 }
 
 grpc_mdelem *grpc_chttp2_hptbl_lookup(const grpc_chttp2_hptbl *tbl,
-                                      gpr_uint32 index) {
+                                      gpr_uint32 tbl_index) {
   /* Static table comes first, just return an entry from it */
-  if (index <= GRPC_CHTTP2_LAST_STATIC_ENTRY) {
-    return tbl->static_ents[index - 1];
+  if (tbl_index <= GRPC_CHTTP2_LAST_STATIC_ENTRY) {
+    return tbl->static_ents[tbl_index - 1];
   }
   /* Otherwise, find the value in the list of valid entries */
-  index -= (GRPC_CHTTP2_LAST_STATIC_ENTRY + 1);
-  if (index < tbl->num_ents) {
-    gpr_uint32 offset = (tbl->num_ents - 1u - index + tbl->first_ent) %
+  tbl_index -= (GRPC_CHTTP2_LAST_STATIC_ENTRY + 1);
+  if (tbl_index < tbl->num_ents) {
+    gpr_uint32 offset = (tbl->num_ents - 1u - tbl_index + tbl->first_ent) %
                         GRPC_CHTTP2_MAX_TABLE_COUNT;
     return tbl->ents[offset];
   }
diff --git a/src/core/transport/chttp2/huffsyms.c b/src/core/transport/chttp2/huffsyms.c
index 6f5cf6a2a92995535eaa458ca648af4004981139..7b138e9b5db575fcae956e31e6551a074b0e9230 100644
--- a/src/core/transport/chttp2/huffsyms.c
+++ b/src/core/transport/chttp2/huffsyms.c
@@ -37,69 +37,261 @@
    command:
    :%s/.*   \([0-9a-f]\+\)  \[ *\([0-9]\+\)\]/{0x\1, \2},/g */
 const grpc_chttp2_huffsym grpc_chttp2_huffsyms[GRPC_CHTTP2_NUM_HUFFSYMS] = {
-    {0x1ff8, 13},     {0x7fffd8, 23},   {0xfffffe2, 28},  {0xfffffe3, 28},
-    {0xfffffe4, 28},  {0xfffffe5, 28},  {0xfffffe6, 28},  {0xfffffe7, 28},
-    {0xfffffe8, 28},  {0xffffea, 24},   {0x3ffffffc, 30}, {0xfffffe9, 28},
-    {0xfffffea, 28},  {0x3ffffffd, 30}, {0xfffffeb, 28},  {0xfffffec, 28},
-    {0xfffffed, 28},  {0xfffffee, 28},  {0xfffffef, 28},  {0xffffff0, 28},
-    {0xffffff1, 28},  {0xffffff2, 28},  {0x3ffffffe, 30}, {0xffffff3, 28},
-    {0xffffff4, 28},  {0xffffff5, 28},  {0xffffff6, 28},  {0xffffff7, 28},
-    {0xffffff8, 28},  {0xffffff9, 28},  {0xffffffa, 28},  {0xffffffb, 28},
-    {0x14, 6},        {0x3f8, 10},      {0x3f9, 10},      {0xffa, 12},
-    {0x1ff9, 13},     {0x15, 6},        {0xf8, 8},        {0x7fa, 11},
-    {0x3fa, 10},      {0x3fb, 10},      {0xf9, 8},        {0x7fb, 11},
-    {0xfa, 8},        {0x16, 6},        {0x17, 6},        {0x18, 6},
-    {0x0, 5},         {0x1, 5},         {0x2, 5},         {0x19, 6},
-    {0x1a, 6},        {0x1b, 6},        {0x1c, 6},        {0x1d, 6},
-    {0x1e, 6},        {0x1f, 6},        {0x5c, 7},        {0xfb, 8},
-    {0x7ffc, 15},     {0x20, 6},        {0xffb, 12},      {0x3fc, 10},
-    {0x1ffa, 13},     {0x21, 6},        {0x5d, 7},        {0x5e, 7},
-    {0x5f, 7},        {0x60, 7},        {0x61, 7},        {0x62, 7},
-    {0x63, 7},        {0x64, 7},        {0x65, 7},        {0x66, 7},
-    {0x67, 7},        {0x68, 7},        {0x69, 7},        {0x6a, 7},
-    {0x6b, 7},        {0x6c, 7},        {0x6d, 7},        {0x6e, 7},
-    {0x6f, 7},        {0x70, 7},        {0x71, 7},        {0x72, 7},
-    {0xfc, 8},        {0x73, 7},        {0xfd, 8},        {0x1ffb, 13},
-    {0x7fff0, 19},    {0x1ffc, 13},     {0x3ffc, 14},     {0x22, 6},
-    {0x7ffd, 15},     {0x3, 5},         {0x23, 6},        {0x4, 5},
-    {0x24, 6},        {0x5, 5},         {0x25, 6},        {0x26, 6},
-    {0x27, 6},        {0x6, 5},         {0x74, 7},        {0x75, 7},
-    {0x28, 6},        {0x29, 6},        {0x2a, 6},        {0x7, 5},
-    {0x2b, 6},        {0x76, 7},        {0x2c, 6},        {0x8, 5},
-    {0x9, 5},         {0x2d, 6},        {0x77, 7},        {0x78, 7},
-    {0x79, 7},        {0x7a, 7},        {0x7b, 7},        {0x7ffe, 15},
-    {0x7fc, 11},      {0x3ffd, 14},     {0x1ffd, 13},     {0xffffffc, 28},
-    {0xfffe6, 20},    {0x3fffd2, 22},   {0xfffe7, 20},    {0xfffe8, 20},
-    {0x3fffd3, 22},   {0x3fffd4, 22},   {0x3fffd5, 22},   {0x7fffd9, 23},
-    {0x3fffd6, 22},   {0x7fffda, 23},   {0x7fffdb, 23},   {0x7fffdc, 23},
-    {0x7fffdd, 23},   {0x7fffde, 23},   {0xffffeb, 24},   {0x7fffdf, 23},
-    {0xffffec, 24},   {0xffffed, 24},   {0x3fffd7, 22},   {0x7fffe0, 23},
-    {0xffffee, 24},   {0x7fffe1, 23},   {0x7fffe2, 23},   {0x7fffe3, 23},
-    {0x7fffe4, 23},   {0x1fffdc, 21},   {0x3fffd8, 22},   {0x7fffe5, 23},
-    {0x3fffd9, 22},   {0x7fffe6, 23},   {0x7fffe7, 23},   {0xffffef, 24},
-    {0x3fffda, 22},   {0x1fffdd, 21},   {0xfffe9, 20},    {0x3fffdb, 22},
-    {0x3fffdc, 22},   {0x7fffe8, 23},   {0x7fffe9, 23},   {0x1fffde, 21},
-    {0x7fffea, 23},   {0x3fffdd, 22},   {0x3fffde, 22},   {0xfffff0, 24},
-    {0x1fffdf, 21},   {0x3fffdf, 22},   {0x7fffeb, 23},   {0x7fffec, 23},
-    {0x1fffe0, 21},   {0x1fffe1, 21},   {0x3fffe0, 22},   {0x1fffe2, 21},
-    {0x7fffed, 23},   {0x3fffe1, 22},   {0x7fffee, 23},   {0x7fffef, 23},
-    {0xfffea, 20},    {0x3fffe2, 22},   {0x3fffe3, 22},   {0x3fffe4, 22},
-    {0x7ffff0, 23},   {0x3fffe5, 22},   {0x3fffe6, 22},   {0x7ffff1, 23},
-    {0x3ffffe0, 26},  {0x3ffffe1, 26},  {0xfffeb, 20},    {0x7fff1, 19},
-    {0x3fffe7, 22},   {0x7ffff2, 23},   {0x3fffe8, 22},   {0x1ffffec, 25},
-    {0x3ffffe2, 26},  {0x3ffffe3, 26},  {0x3ffffe4, 26},  {0x7ffffde, 27},
-    {0x7ffffdf, 27},  {0x3ffffe5, 26},  {0xfffff1, 24},   {0x1ffffed, 25},
-    {0x7fff2, 19},    {0x1fffe3, 21},   {0x3ffffe6, 26},  {0x7ffffe0, 27},
-    {0x7ffffe1, 27},  {0x3ffffe7, 26},  {0x7ffffe2, 27},  {0xfffff2, 24},
-    {0x1fffe4, 21},   {0x1fffe5, 21},   {0x3ffffe8, 26},  {0x3ffffe9, 26},
-    {0xffffffd, 28},  {0x7ffffe3, 27},  {0x7ffffe4, 27},  {0x7ffffe5, 27},
-    {0xfffec, 20},    {0xfffff3, 24},   {0xfffed, 20},    {0x1fffe6, 21},
-    {0x3fffe9, 22},   {0x1fffe7, 21},   {0x1fffe8, 21},   {0x7ffff3, 23},
-    {0x3fffea, 22},   {0x3fffeb, 22},   {0x1ffffee, 25},  {0x1ffffef, 25},
-    {0xfffff4, 24},   {0xfffff5, 24},   {0x3ffffea, 26},  {0x7ffff4, 23},
-    {0x3ffffeb, 26},  {0x7ffffe6, 27},  {0x3ffffec, 26},  {0x3ffffed, 26},
-    {0x7ffffe7, 27},  {0x7ffffe8, 27},  {0x7ffffe9, 27},  {0x7ffffea, 27},
-    {0x7ffffeb, 27},  {0xffffffe, 28},  {0x7ffffec, 27},  {0x7ffffed, 27},
-    {0x7ffffee, 27},  {0x7ffffef, 27},  {0x7fffff0, 27},  {0x3ffffee, 26},
+    {0x1ff8, 13},
+    {0x7fffd8, 23},
+    {0xfffffe2, 28},
+    {0xfffffe3, 28},
+    {0xfffffe4, 28},
+    {0xfffffe5, 28},
+    {0xfffffe6, 28},
+    {0xfffffe7, 28},
+    {0xfffffe8, 28},
+    {0xffffea, 24},
+    {0x3ffffffc, 30},
+    {0xfffffe9, 28},
+    {0xfffffea, 28},
+    {0x3ffffffd, 30},
+    {0xfffffeb, 28},
+    {0xfffffec, 28},
+    {0xfffffed, 28},
+    {0xfffffee, 28},
+    {0xfffffef, 28},
+    {0xffffff0, 28},
+    {0xffffff1, 28},
+    {0xffffff2, 28},
+    {0x3ffffffe, 30},
+    {0xffffff3, 28},
+    {0xffffff4, 28},
+    {0xffffff5, 28},
+    {0xffffff6, 28},
+    {0xffffff7, 28},
+    {0xffffff8, 28},
+    {0xffffff9, 28},
+    {0xffffffa, 28},
+    {0xffffffb, 28},
+    {0x14, 6},
+    {0x3f8, 10},
+    {0x3f9, 10},
+    {0xffa, 12},
+    {0x1ff9, 13},
+    {0x15, 6},
+    {0xf8, 8},
+    {0x7fa, 11},
+    {0x3fa, 10},
+    {0x3fb, 10},
+    {0xf9, 8},
+    {0x7fb, 11},
+    {0xfa, 8},
+    {0x16, 6},
+    {0x17, 6},
+    {0x18, 6},
+    {0x0, 5},
+    {0x1, 5},
+    {0x2, 5},
+    {0x19, 6},
+    {0x1a, 6},
+    {0x1b, 6},
+    {0x1c, 6},
+    {0x1d, 6},
+    {0x1e, 6},
+    {0x1f, 6},
+    {0x5c, 7},
+    {0xfb, 8},
+    {0x7ffc, 15},
+    {0x20, 6},
+    {0xffb, 12},
+    {0x3fc, 10},
+    {0x1ffa, 13},
+    {0x21, 6},
+    {0x5d, 7},
+    {0x5e, 7},
+    {0x5f, 7},
+    {0x60, 7},
+    {0x61, 7},
+    {0x62, 7},
+    {0x63, 7},
+    {0x64, 7},
+    {0x65, 7},
+    {0x66, 7},
+    {0x67, 7},
+    {0x68, 7},
+    {0x69, 7},
+    {0x6a, 7},
+    {0x6b, 7},
+    {0x6c, 7},
+    {0x6d, 7},
+    {0x6e, 7},
+    {0x6f, 7},
+    {0x70, 7},
+    {0x71, 7},
+    {0x72, 7},
+    {0xfc, 8},
+    {0x73, 7},
+    {0xfd, 8},
+    {0x1ffb, 13},
+    {0x7fff0, 19},
+    {0x1ffc, 13},
+    {0x3ffc, 14},
+    {0x22, 6},
+    {0x7ffd, 15},
+    {0x3, 5},
+    {0x23, 6},
+    {0x4, 5},
+    {0x24, 6},
+    {0x5, 5},
+    {0x25, 6},
+    {0x26, 6},
+    {0x27, 6},
+    {0x6, 5},
+    {0x74, 7},
+    {0x75, 7},
+    {0x28, 6},
+    {0x29, 6},
+    {0x2a, 6},
+    {0x7, 5},
+    {0x2b, 6},
+    {0x76, 7},
+    {0x2c, 6},
+    {0x8, 5},
+    {0x9, 5},
+    {0x2d, 6},
+    {0x77, 7},
+    {0x78, 7},
+    {0x79, 7},
+    {0x7a, 7},
+    {0x7b, 7},
+    {0x7ffe, 15},
+    {0x7fc, 11},
+    {0x3ffd, 14},
+    {0x1ffd, 13},
+    {0xffffffc, 28},
+    {0xfffe6, 20},
+    {0x3fffd2, 22},
+    {0xfffe7, 20},
+    {0xfffe8, 20},
+    {0x3fffd3, 22},
+    {0x3fffd4, 22},
+    {0x3fffd5, 22},
+    {0x7fffd9, 23},
+    {0x3fffd6, 22},
+    {0x7fffda, 23},
+    {0x7fffdb, 23},
+    {0x7fffdc, 23},
+    {0x7fffdd, 23},
+    {0x7fffde, 23},
+    {0xffffeb, 24},
+    {0x7fffdf, 23},
+    {0xffffec, 24},
+    {0xffffed, 24},
+    {0x3fffd7, 22},
+    {0x7fffe0, 23},
+    {0xffffee, 24},
+    {0x7fffe1, 23},
+    {0x7fffe2, 23},
+    {0x7fffe3, 23},
+    {0x7fffe4, 23},
+    {0x1fffdc, 21},
+    {0x3fffd8, 22},
+    {0x7fffe5, 23},
+    {0x3fffd9, 22},
+    {0x7fffe6, 23},
+    {0x7fffe7, 23},
+    {0xffffef, 24},
+    {0x3fffda, 22},
+    {0x1fffdd, 21},
+    {0xfffe9, 20},
+    {0x3fffdb, 22},
+    {0x3fffdc, 22},
+    {0x7fffe8, 23},
+    {0x7fffe9, 23},
+    {0x1fffde, 21},
+    {0x7fffea, 23},
+    {0x3fffdd, 22},
+    {0x3fffde, 22},
+    {0xfffff0, 24},
+    {0x1fffdf, 21},
+    {0x3fffdf, 22},
+    {0x7fffeb, 23},
+    {0x7fffec, 23},
+    {0x1fffe0, 21},
+    {0x1fffe1, 21},
+    {0x3fffe0, 22},
+    {0x1fffe2, 21},
+    {0x7fffed, 23},
+    {0x3fffe1, 22},
+    {0x7fffee, 23},
+    {0x7fffef, 23},
+    {0xfffea, 20},
+    {0x3fffe2, 22},
+    {0x3fffe3, 22},
+    {0x3fffe4, 22},
+    {0x7ffff0, 23},
+    {0x3fffe5, 22},
+    {0x3fffe6, 22},
+    {0x7ffff1, 23},
+    {0x3ffffe0, 26},
+    {0x3ffffe1, 26},
+    {0xfffeb, 20},
+    {0x7fff1, 19},
+    {0x3fffe7, 22},
+    {0x7ffff2, 23},
+    {0x3fffe8, 22},
+    {0x1ffffec, 25},
+    {0x3ffffe2, 26},
+    {0x3ffffe3, 26},
+    {0x3ffffe4, 26},
+    {0x7ffffde, 27},
+    {0x7ffffdf, 27},
+    {0x3ffffe5, 26},
+    {0xfffff1, 24},
+    {0x1ffffed, 25},
+    {0x7fff2, 19},
+    {0x1fffe3, 21},
+    {0x3ffffe6, 26},
+    {0x7ffffe0, 27},
+    {0x7ffffe1, 27},
+    {0x3ffffe7, 26},
+    {0x7ffffe2, 27},
+    {0xfffff2, 24},
+    {0x1fffe4, 21},
+    {0x1fffe5, 21},
+    {0x3ffffe8, 26},
+    {0x3ffffe9, 26},
+    {0xffffffd, 28},
+    {0x7ffffe3, 27},
+    {0x7ffffe4, 27},
+    {0x7ffffe5, 27},
+    {0xfffec, 20},
+    {0xfffff3, 24},
+    {0xfffed, 20},
+    {0x1fffe6, 21},
+    {0x3fffe9, 22},
+    {0x1fffe7, 21},
+    {0x1fffe8, 21},
+    {0x7ffff3, 23},
+    {0x3fffea, 22},
+    {0x3fffeb, 22},
+    {0x1ffffee, 25},
+    {0x1ffffef, 25},
+    {0xfffff4, 24},
+    {0xfffff5, 24},
+    {0x3ffffea, 26},
+    {0x7ffff4, 23},
+    {0x3ffffeb, 26},
+    {0x7ffffe6, 27},
+    {0x3ffffec, 26},
+    {0x3ffffed, 26},
+    {0x7ffffe7, 27},
+    {0x7ffffe8, 27},
+    {0x7ffffe9, 27},
+    {0x7ffffea, 27},
+    {0x7ffffeb, 27},
+    {0xffffffe, 28},
+    {0x7ffffec, 27},
+    {0x7ffffed, 27},
+    {0x7ffffee, 27},
+    {0x7ffffef, 27},
+    {0x7fffff0, 27},
+    {0x3ffffee, 26},
     {0x3fffffff, 30},
 };
diff --git a/src/core/transport/chttp2/stream_encoder.c b/src/core/transport/chttp2/stream_encoder.c
index b1f1db05d26cfe2781581d52a2a425e656aed9c7..83227e677db07cacf633799bba2fc312034ad435 100644
--- a/src/core/transport/chttp2/stream_encoder.c
+++ b/src/core/transport/chttp2/stream_encoder.c
@@ -274,10 +274,11 @@ static grpc_mdelem *add_elem(grpc_chttp2_hpack_compressor *c,
   return elem_to_unref;
 }
 
-static void emit_indexed(grpc_chttp2_hpack_compressor *c, gpr_uint32 index,
+static void emit_indexed(grpc_chttp2_hpack_compressor *c, gpr_uint32 elem_index,
                          framer_state *st) {
-  gpr_uint32 len = GRPC_CHTTP2_VARINT_LENGTH(index, 1);
-  GRPC_CHTTP2_WRITE_VARINT(index, 1, 0x80, add_tiny_header_data(st, len), len);
+  gpr_uint32 len = GRPC_CHTTP2_VARINT_LENGTH(elem_index, 1);
+  GRPC_CHTTP2_WRITE_VARINT(elem_index, 1, 0x80, add_tiny_header_data(st, len),
+                           len);
 }
 
 static gpr_slice get_wire_value(grpc_mdelem *elem, gpr_uint8 *huffman_prefix) {
@@ -363,9 +364,10 @@ static void emit_lithdr_noidx_v(grpc_chttp2_hpack_compressor *c,
   add_header_data(st, gpr_slice_ref(value_slice));
 }
 
-static gpr_uint32 dynidx(grpc_chttp2_hpack_compressor *c, gpr_uint32 index) {
+static gpr_uint32 dynidx(grpc_chttp2_hpack_compressor *c,
+                         gpr_uint32 elem_index) {
   return 1 + GRPC_CHTTP2_LAST_STATIC_ENTRY + c->tail_remote_index +
-         c->table_elems - index;
+         c->table_elems - elem_index;
 }
 
 /* encode an mdelem; returns metadata element to unref */
diff --git a/src/core/transport/chttp2_transport.c b/src/core/transport/chttp2_transport.c
index 0202d53abdb6f9c5ff337c1bdeb92fb5b54bd22d..de743795462968dc2340b141bfd73a721d744843 100644
--- a/src/core/transport/chttp2_transport.c
+++ b/src/core/transport/chttp2_transport.c
@@ -1114,8 +1114,8 @@ static void recv_data(grpc_exec_ctx *exec_ctx, void *tp, int success) {
     grpc_chttp2_prepare_to_read(&t->global, &t->parsing);
     gpr_mu_unlock(&t->mu);
     for (; i < t->read_buffer.count &&
-           grpc_chttp2_perform_read(exec_ctx, &t->parsing,
-                                    t->read_buffer.slices[i]);
+               grpc_chttp2_perform_read(exec_ctx, &t->parsing,
+                                        t->read_buffer.slices[i]);
          i++)
       ;
     gpr_mu_lock(&t->mu);
@@ -1136,7 +1136,7 @@ static void recv_data(grpc_exec_ctx *exec_ctx, void *tp, int success) {
     grpc_chttp2_publish_reads(exec_ctx, &t->global, &t->parsing);
     t->parsing_active = 0;
   }
-  if (!success || i != t->read_buffer.count) {
+  if (!success || i != t->read_buffer.count || t->closed) {
     drop_connection(exec_ctx, t);
     read_error_locked(exec_ctx, t);
   } else if (!t->closed) {
@@ -1229,13 +1229,9 @@ static char *chttp2_get_peer(grpc_exec_ctx *exec_ctx, grpc_transport *t) {
   return gpr_strdup(((grpc_chttp2_transport *)t)->peer_string);
 }
 
-static const grpc_transport_vtable vtable = {sizeof(grpc_chttp2_stream),
-                                             init_stream,
-                                             perform_stream_op,
-                                             perform_transport_op,
-                                             destroy_stream,
-                                             destroy_transport,
-                                             chttp2_get_peer};
+static const grpc_transport_vtable vtable = {
+    sizeof(grpc_chttp2_stream), init_stream, perform_stream_op,
+    perform_transport_op, destroy_stream, destroy_transport, chttp2_get_peer};
 
 grpc_transport *grpc_create_chttp2_transport(
     grpc_exec_ctx *exec_ctx, const grpc_channel_args *channel_args,
diff --git a/src/core/transport/connectivity_state.c b/src/core/transport/connectivity_state.c
index a53fecc19856a956600b2f04627cc269ea666630..09b298c131b6dab8b2f7741712cb3445b20dd32a 100644
--- a/src/core/transport/connectivity_state.c
+++ b/src/core/transport/connectivity_state.c
@@ -115,6 +115,27 @@ int grpc_connectivity_state_notify_on_state_change(
   return tracker->current_state == GRPC_CHANNEL_IDLE;
 }
 
+int grpc_connectivity_state_change_unsubscribe(
+    grpc_exec_ctx *exec_ctx, grpc_connectivity_state_tracker *tracker,
+    grpc_closure *subscribed_notify) {
+  grpc_connectivity_state_watcher *w = tracker->watchers;
+  if (w != NULL && w->notify == subscribed_notify) {
+    tracker->watchers = w->next;
+    gpr_free(w);
+    return 1;
+  }
+  while (w != NULL) {
+    grpc_connectivity_state_watcher *rm_candidate = w->next;
+    if (rm_candidate != NULL && rm_candidate->notify == subscribed_notify) {
+      w->next = w->next->next;
+      gpr_free(rm_candidate);
+      return 1;
+    }
+    w = w->next;
+  }
+  return 0;
+}
+
 void grpc_connectivity_state_set(grpc_exec_ctx *exec_ctx,
                                  grpc_connectivity_state_tracker *tracker,
                                  grpc_connectivity_state state,
diff --git a/src/core/transport/connectivity_state.h b/src/core/transport/connectivity_state.h
index 8b6b0554cd4616dfb2952d7cd6281a67a75669e6..119b1c1554db07a65814e46002ad09e7f3173771 100644
--- a/src/core/transport/connectivity_state.h
+++ b/src/core/transport/connectivity_state.h
@@ -78,4 +78,11 @@ int grpc_connectivity_state_notify_on_state_change(
     grpc_exec_ctx *exec_ctx, grpc_connectivity_state_tracker *tracker,
     grpc_connectivity_state *current, grpc_closure *notify);
 
+/** Remove \a subscribed_notify from the list of closures to be called on a
+ * state change if present, returning 1. Otherwise, nothing is done and return
+ * 0. */
+int grpc_connectivity_state_change_unsubscribe(
+    grpc_exec_ctx *exec_ctx, grpc_connectivity_state_tracker *tracker,
+    grpc_closure *subscribed_notify);
+
 #endif /* GRPC_INTERNAL_CORE_TRANSPORT_CONNECTIVITY_STATE_H */
diff --git a/src/core/transport/stream_op.c b/src/core/transport/stream_op.c
index 038586d48e220d3f0573699cddb2ec71df0d25dd..1cb2bd7c598558e2b029d35ac92c2b8d131a13f1 100644
--- a/src/core/transport/stream_op.c
+++ b/src/core/transport/stream_op.c
@@ -274,14 +274,14 @@ void grpc_metadata_batch_link_tail(grpc_metadata_batch *batch,
 }
 
 void grpc_metadata_batch_merge(grpc_metadata_batch *target,
-                               grpc_metadata_batch *add) {
+                               grpc_metadata_batch *to_add) {
   grpc_linked_mdelem *l;
   grpc_linked_mdelem *next;
-  for (l = add->list.head; l; l = next) {
+  for (l = to_add->list.head; l; l = next) {
     next = l->next;
     link_tail(&target->list, l);
   }
-  for (l = add->garbage.head; l; l = next) {
+  for (l = to_add->garbage.head; l; l = next) {
     next = l->next;
     link_tail(&target->garbage, l);
   }
diff --git a/src/core/tsi/fake_transport_security.c b/src/core/tsi/fake_transport_security.c
index 9ef4b163beb94acb118fe5c33c7119cd6f63d401..a40268a7f0b32f71f1e06daf967d4bb7935118ec 100644
--- a/src/core/tsi/fake_transport_security.c
+++ b/src/core/tsi/fake_transport_security.c
@@ -118,10 +118,10 @@ static gpr_uint32 load32_little_endian(const unsigned char *buf) {
 }
 
 static void store32_little_endian(gpr_uint32 value, unsigned char *buf) {
-  buf[3] = (unsigned char)(value >> 24) & 0xFF;
-  buf[2] = (unsigned char)(value >> 16) & 0xFF;
-  buf[1] = (unsigned char)(value >> 8) & 0xFF;
-  buf[0] = (unsigned char)(value)&0xFF;
+  buf[3] = (unsigned char)((value >> 24) & 0xFF);
+  buf[2] = (unsigned char)((value >> 16) & 0xFF);
+  buf[1] = (unsigned char)((value >> 8) & 0xFF);
+  buf[0] = (unsigned char)((value) & 0xFF);
 }
 
 static void tsi_fake_frame_reset(tsi_fake_frame *frame, int needs_draining) {
@@ -493,10 +493,8 @@ static void fake_handshaker_destroy(tsi_handshaker *self) {
 
 static const tsi_handshaker_vtable handshaker_vtable = {
     fake_handshaker_get_bytes_to_send_to_peer,
-    fake_handshaker_process_bytes_from_peer,
-    fake_handshaker_get_result,
-    fake_handshaker_extract_peer,
-    fake_handshaker_create_frame_protector,
+    fake_handshaker_process_bytes_from_peer, fake_handshaker_get_result,
+    fake_handshaker_extract_peer, fake_handshaker_create_frame_protector,
     fake_handshaker_destroy,
 };
 
diff --git a/src/core/tsi/ssl_transport_security.c b/src/core/tsi/ssl_transport_security.c
index ad6b2d76847e3532164ee7e47f37e2c642a9b047..05789f07d497434ecda33b5baf98c5dc34fb5599 100644
--- a/src/core/tsi/ssl_transport_security.c
+++ b/src/core/tsi/ssl_transport_security.c
@@ -976,10 +976,8 @@ static void ssl_handshaker_destroy(tsi_handshaker *self) {
 
 static const tsi_handshaker_vtable handshaker_vtable = {
     ssl_handshaker_get_bytes_to_send_to_peer,
-    ssl_handshaker_process_bytes_from_peer,
-    ssl_handshaker_get_result,
-    ssl_handshaker_extract_peer,
-    ssl_handshaker_create_frame_protector,
+    ssl_handshaker_process_bytes_from_peer, ssl_handshaker_get_result,
+    ssl_handshaker_extract_peer, ssl_handshaker_create_frame_protector,
     ssl_handshaker_destroy,
 };
 
diff --git a/src/cpp/README.md b/src/cpp/README.md
index a2eb9a08c81ec5930e79b15d9ce7812d50153928..baeba0831555228bc6789a557511930e66082ce1 100644
--- a/src/cpp/README.md
+++ b/src/cpp/README.md
@@ -5,5 +5,4 @@ This directory contains source code for C++ implementation of gRPC.
 
 #Status
 
-Alpha : Ready for early adopters
-
+Beta
diff --git a/src/cpp/client/secure_credentials.cc b/src/cpp/client/secure_credentials.cc
index 1693cf740bd4dca8645832333d1f79f484ba9dbd..8299ebeb8a233499ec6bf9d8bc007e9b120fe44b 100644
--- a/src/cpp/client/secure_credentials.cc
+++ b/src/cpp/client/secure_credentials.cc
@@ -154,10 +154,10 @@ void MetadataCredentialsPluginWrapper::Destroy(void* wrapper) {
 void MetadataCredentialsPluginWrapper::GetMetadata(
     void* wrapper, const char* service_url,
     grpc_credentials_plugin_metadata_cb cb, void* user_data) {
-  GPR_ASSERT(wrapper != nullptr);
+  GPR_ASSERT(wrapper);
   MetadataCredentialsPluginWrapper* w =
       reinterpret_cast<MetadataCredentialsPluginWrapper*>(wrapper);
-  if (w->plugin_ == nullptr) {
+  if (!w->plugin_) {
     cb(user_data, NULL, 0, GRPC_STATUS_OK, NULL);
     return;
   }
@@ -177,11 +177,12 @@ void MetadataCredentialsPluginWrapper::InvokePlugin(
   Status status = plugin_->GetMetadata(service_url, &metadata);
   std::vector<grpc_metadata> md;
   for (auto it = metadata.begin(); it != metadata.end(); ++it) {
-    md.push_back({it->first.c_str(),
-                  it->second.data(),
-                  it->second.size(),
-                  0,
-                  {{nullptr, nullptr, nullptr, nullptr}}});
+    grpc_metadata md_entry;
+    md_entry.key = it->first.c_str();
+    md_entry.value = it->second.data();
+    md_entry.value_length = it->second.size();
+    md_entry.flags = 0;
+    md.push_back(md_entry);
   }
   cb(user_data, md.empty() ? nullptr : &md[0], md.size(),
      static_cast<grpc_status_code>(status.error_code()),
diff --git a/src/cpp/proto/proto_utils.cc b/src/cpp/proto/proto_utils.cc
index 3c0be5891947b70ede477d18d44939e2babadd03..4131fbe5e50d310973b192b3e6b9965dcbe2a81c 100644
--- a/src/cpp/proto/proto_utils.cc
+++ b/src/cpp/proto/proto_utils.cc
@@ -161,7 +161,8 @@ Status SerializeProto(const grpc::protobuf::Message& msg,
   int byte_size = msg.ByteSize();
   if (byte_size <= kMaxBufferLength) {
     gpr_slice slice = gpr_slice_malloc(byte_size);
-    GPR_ASSERT(GPR_SLICE_END_PTR(slice) == msg.SerializeWithCachedSizesToArray(GPR_SLICE_START_PTR(slice)));
+    GPR_ASSERT(GPR_SLICE_END_PTR(slice) ==
+               msg.SerializeWithCachedSizesToArray(GPR_SLICE_START_PTR(slice)));
     *bp = grpc_raw_byte_buffer_create(&slice, 1);
     gpr_slice_unref(slice);
     return Status::OK;
diff --git a/src/cpp/server/secure_server_credentials.cc b/src/cpp/server/secure_server_credentials.cc
index 90afebfd2e22b4a9d6b6e00cb7f79a05665a8dba..d472667a7eec32971936d6d15da54630ce1bbfe4 100644
--- a/src/cpp/server/secure_server_credentials.cc
+++ b/src/cpp/server/secure_server_credentials.cc
@@ -35,7 +35,6 @@
 #include <map>
 #include <memory>
 
-
 #include "src/cpp/common/secure_auth_context.h"
 #include "src/cpp/server/secure_server_credentials.h"
 
@@ -43,7 +42,7 @@
 
 namespace grpc {
 
-void AuthMetadataProcessorAyncWrapper::Destroy(void *wrapper) {
+void AuthMetadataProcessorAyncWrapper::Destroy(void* wrapper) {
   auto* w = reinterpret_cast<AuthMetadataProcessorAyncWrapper*>(wrapper);
   delete w;
 }
@@ -52,7 +51,7 @@ void AuthMetadataProcessorAyncWrapper::Process(
     void* wrapper, grpc_auth_context* context, const grpc_metadata* md,
     size_t num_md, grpc_process_auth_metadata_done_cb cb, void* user_data) {
   auto* w = reinterpret_cast<AuthMetadataProcessorAyncWrapper*>(wrapper);
-  if (w->processor_ == nullptr) {
+  if (!w->processor_) {
     // Early exit.
     cb(user_data, nullptr, 0, nullptr, 0, GRPC_STATUS_OK, nullptr);
     return;
@@ -68,8 +67,7 @@ void AuthMetadataProcessorAyncWrapper::Process(
 }
 
 void AuthMetadataProcessorAyncWrapper::InvokeProcessor(
-    grpc_auth_context* ctx,
-    const grpc_metadata* md, size_t num_md,
+    grpc_auth_context* ctx, const grpc_metadata* md, size_t num_md,
     grpc_process_auth_metadata_done_cb cb, void* user_data) {
   AuthMetadataProcessor::InputMetadata metadata;
   for (size_t i = 0; i < num_md; i++) {
@@ -86,20 +84,22 @@ void AuthMetadataProcessorAyncWrapper::InvokeProcessor(
   std::vector<grpc_metadata> consumed_md;
   for (auto it = consumed_metadata.begin(); it != consumed_metadata.end();
        ++it) {
-    consumed_md.push_back({it->first.c_str(),
-                           it->second.data(),
-                           it->second.size(),
-                           0,
-                           {{nullptr, nullptr, nullptr, nullptr}}});
+    grpc_metadata md_entry;
+    md_entry.key = it->first.c_str();
+    md_entry.value = it->second.data();
+    md_entry.value_length = it->second.size();
+    md_entry.flags = 0;
+    consumed_md.push_back(md_entry);
   }
   std::vector<grpc_metadata> response_md;
   for (auto it = response_metadata.begin(); it != response_metadata.end();
        ++it) {
-    response_md.push_back({it->first.c_str(),
-                           it->second.data(),
-                           it->second.size(),
-                           0,
-                           {{nullptr, nullptr, nullptr, nullptr}}});
+    grpc_metadata md_entry;
+    md_entry.key = it->first.c_str();
+    md_entry.value = it->second.data();
+    md_entry.value_length = it->second.size();
+    md_entry.flags = 0;
+    response_md.push_back(md_entry);
   }
   auto consumed_md_data = consumed_md.empty() ? nullptr : &consumed_md[0];
   auto response_md_data = response_md.empty() ? nullptr : &response_md[0];
@@ -115,7 +115,7 @@ int SecureServerCredentials::AddPortToServer(const grpc::string& addr,
 
 void SecureServerCredentials::SetAuthMetadataProcessor(
     const std::shared_ptr<AuthMetadataProcessor>& processor) {
-  auto *wrapper = new AuthMetadataProcessorAyncWrapper(processor);
+  auto* wrapper = new AuthMetadataProcessorAyncWrapper(processor);
   grpc_server_credentials_set_auth_metadata_processor(
       creds_, {AuthMetadataProcessorAyncWrapper::Process,
                AuthMetadataProcessorAyncWrapper::Destroy, wrapper});
diff --git a/src/cpp/server/server.cc b/src/cpp/server/server.cc
index a3020c342b416790f541599cde1f6a598a110249..a44e1d202503415ca0eb711ab985e09f73697254 100644
--- a/src/cpp/server/server.cc
+++ b/src/cpp/server/server.cc
@@ -325,7 +325,7 @@ bool Server::RegisterAsyncService(const grpc::string* host,
   GPR_ASSERT(service->server_ == nullptr &&
              "Can only register an asynchronous service against one server.");
   service->server_ = this;
-  service->request_args_ = new void*[service->method_count_];
+  service->request_args_ = new void* [service->method_count_];
   for (size_t i = 0; i < service->method_count_; ++i) {
     void* tag = grpc_server_register_method(server_, service->method_names_[i],
                                             host ? host->c_str() : nullptr);
diff --git a/src/cpp/server/server_builder.cc b/src/cpp/server/server_builder.cc
index 1c7e4e4eb663b9baad39e52e1c28e26714e95e1d..b8094aa8f6fe849cbd5aa0fcc8f1476764cdee14 100644
--- a/src/cpp/server/server_builder.cc
+++ b/src/cpp/server/server_builder.cc
@@ -44,7 +44,7 @@ namespace grpc {
 
 ServerBuilder::ServerBuilder()
     : max_message_size_(-1), generic_service_(nullptr), thread_pool_(nullptr) {
-      grpc_compression_options_init(&compression_options_);
+  grpc_compression_options_init(&compression_options_);
 }
 
 std::unique_ptr<ServerCompletionQueue> ServerBuilder::AddCompletionQueue() {
diff --git a/src/cpp/util/string_ref.cc b/src/cpp/util/string_ref.cc
index c42033f61fe6f29c0851517c1beb1f20b3ead7cb..604134fa9da9cfca538d61e5d091a25be48e0e49 100644
--- a/src/cpp/util/string_ref.cc
+++ b/src/cpp/util/string_ref.cc
@@ -85,29 +85,17 @@ size_t string_ref::find(char c) const {
   return it == cend() ? npos : std::distance(cbegin(), it);
 }
 
-bool operator==(string_ref x, string_ref y) {
-  return x.compare(y) == 0;
-}
+bool operator==(string_ref x, string_ref y) { return x.compare(y) == 0; }
 
-bool operator!=(string_ref x, string_ref y) {
-  return x.compare(y) != 0;
-}
+bool operator!=(string_ref x, string_ref y) { return x.compare(y) != 0; }
 
-bool operator<(string_ref x, string_ref y) {
-  return x.compare(y) < 0;
-}
+bool operator<(string_ref x, string_ref y) { return x.compare(y) < 0; }
 
-bool operator<=(string_ref x, string_ref y) {
-  return x.compare(y) <= 0;
-}
+bool operator<=(string_ref x, string_ref y) { return x.compare(y) <= 0; }
 
-bool operator>(string_ref x, string_ref y) {
-  return x.compare(y) > 0;
-}
+bool operator>(string_ref x, string_ref y) { return x.compare(y) > 0; }
 
-bool operator>=(string_ref x, string_ref y) {
-  return x.compare(y) >= 0;
-}
+bool operator>=(string_ref x, string_ref y) { return x.compare(y) >= 0; }
 
 std::ostream& operator<<(std::ostream& out, const string_ref& string) {
   return out << grpc::string(string.begin(), string.end());
diff --git a/src/csharp/Grpc.Auth/AuthInterceptors.cs b/src/csharp/Grpc.Auth/AuthInterceptors.cs
index c8ab4d9af6f8966b6dcc1354ee1da6c02954adfc..fa9256677518d13c205a191827ab4d72ca171ee5 100644
--- a/src/csharp/Grpc.Auth/AuthInterceptors.cs
+++ b/src/csharp/Grpc.Auth/AuthInterceptors.cs
@@ -41,8 +41,8 @@ using Grpc.Core.Utils;
 namespace Grpc.Auth
 {
     /// <summary>
-    /// Factory methods to create authorization interceptors. Interceptors created can be registered with gRPC client classes (autogenerated client stubs that
-    /// inherit from <see cref="Grpc.Core.ClientBase"/>).
+    /// Factory methods to create authorization interceptors.
+    /// <seealso cref="GrpcCredentials"/>
     /// </summary>
     public static class AuthInterceptors
     {
@@ -50,31 +50,29 @@ namespace Grpc.Auth
         private const string Schema = "Bearer";
 
         /// <summary>
-        /// Creates interceptor that will obtain access token from any credential type that implements
+        /// Creates an <see cref="AsyncAuthInterceptor"/> that will obtain access token from any credential type that implements
         /// <c>ITokenAccess</c>. (e.g. <c>GoogleCredential</c>).
         /// </summary>
         /// <param name="credential">The credential to use to obtain access tokens.</param>
-        /// <returns>The header interceptor.</returns>
-        public static HeaderInterceptor FromCredential(ITokenAccess credential)
+        /// <returns>The interceptor.</returns>
+        public static AsyncAuthInterceptor FromCredential(ITokenAccess credential)
         {
-            return new HeaderInterceptor((method, authUri, metadata) =>
+            return new AsyncAuthInterceptor(async (authUri, metadata) =>
             {
-                // TODO(jtattermusch): Rethink synchronous wait to obtain the result.
-                var accessToken = credential.GetAccessTokenForRequestAsync(authUri, CancellationToken.None)
-                        .ConfigureAwait(false).GetAwaiter().GetResult();
+                var accessToken = await credential.GetAccessTokenForRequestAsync(authUri, CancellationToken.None).ConfigureAwait(false);
                 metadata.Add(CreateBearerTokenHeader(accessToken));
             });
         }
 
         /// <summary>
-        /// Creates OAuth2 interceptor that will use given access token as authorization.
+        /// Creates an <see cref="AsyncAuthInterceptor"/> that will use given access token as authorization.
         /// </summary>
         /// <param name="accessToken">OAuth2 access token.</param>
-        /// <returns>The header interceptor.</returns>
-        public static HeaderInterceptor FromAccessToken(string accessToken)
+        /// <returns>The interceptor.</returns>
+        public static AsyncAuthInterceptor FromAccessToken(string accessToken)
         {
             Preconditions.CheckNotNull(accessToken);
-            return new HeaderInterceptor((method, authUri, metadata) =>
+            return new AsyncAuthInterceptor(async (authUri, metadata) =>
             {
                 metadata.Add(CreateBearerTokenHeader(accessToken));
             });
diff --git a/src/csharp/Grpc.Auth/Grpc.Auth.csproj b/src/csharp/Grpc.Auth/Grpc.Auth.csproj
index 4fb087d4a342686c0acc4d75da04ea22240e851a..80ab07d2ae531222ef1b5f93823818c6db2bb892 100644
--- a/src/csharp/Grpc.Auth/Grpc.Auth.csproj
+++ b/src/csharp/Grpc.Auth/Grpc.Auth.csproj
@@ -78,6 +78,7 @@
     <Compile Include="..\Grpc.Core\Version.cs">
       <Link>Version.cs</Link>
     </Compile>
+    <Compile Include="GrpcCredentials.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="AuthInterceptors.cs" />
   </ItemGroup>
diff --git a/src/csharp/Grpc.Auth/GrpcCredentials.cs b/src/csharp/Grpc.Auth/GrpcCredentials.cs
new file mode 100644
index 0000000000000000000000000000000000000000..d8b10804c6e2959c7f77287a5408bcce064e3f0e
--- /dev/null
+++ b/src/csharp/Grpc.Auth/GrpcCredentials.cs
@@ -0,0 +1,93 @@
+#region Copyright notice and license
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.Threading;
+
+using Google.Apis.Auth.OAuth2;
+using Grpc.Core;
+using Grpc.Core.Utils;
+
+namespace Grpc.Auth
+{
+    /// <summary>
+    /// Factory methods to create instances of <see cref="ChannelCredentials"/> and <see cref="CallCredentials"/> classes.
+    /// </summary>
+    public static class GrpcCredentials
+    {
+        /// <summary>
+        /// Creates a <see cref="MetadataCredentials"/> instance that will obtain access tokens 
+        /// from any credential that implements <c>ITokenAccess</c>. (e.g. <c>GoogleCredential</c>).
+        /// </summary>
+        /// <param name="credential">The credential to use to obtain access tokens.</param>
+        /// <returns>The <c>MetadataCredentials</c> instance.</returns>
+        public static MetadataCredentials Create(ITokenAccess credential)
+        {
+            return new MetadataCredentials(AuthInterceptors.FromCredential(credential));
+        }
+
+        /// <summary>
+        /// Convenience method to create a <see cref="ChannelCredentials"/> instance from
+        /// <c>ITokenAccess</c> credential and <c>SslCredentials</c> instance.
+        /// </summary>
+        /// <param name="credential">The credential to use to obtain access tokens.</param>
+        /// <param name="sslCredentials">The <c>SslCredentials</c> instance.</param>
+        /// <returns>The channel credentials for access token based auth over a secure channel.</returns>
+        public static ChannelCredentials Create(ITokenAccess credential, SslCredentials sslCredentials)
+        {
+            return ChannelCredentials.Create(sslCredentials, Create(credential));
+        }
+
+        /// <summary>
+        /// Creates an instance of <see cref="MetadataCredentials"/> that will use given access token to authenticate
+        /// with a gRPC service.
+        /// </summary>
+        /// <param name="accessToken">OAuth2 access token.</param>
+        /// /// <returns>The <c>MetadataCredentials</c> instance.</returns>
+        public static MetadataCredentials FromAccessToken(string accessToken)
+        {
+            return new MetadataCredentials(AuthInterceptors.FromAccessToken(accessToken));
+        }
+
+        /// <summary>
+        /// Converts a <c>ITokenAccess</c> object into a <see cref="MetadataCredentials"/> object supported
+        /// by gRPC.
+        /// </summary>
+        /// <param name="credential"></param>
+        /// <returns></returns>
+        public static MetadataCredentials ToGrpcCredentials(this ITokenAccess credential)
+        {
+            return GrpcCredentials.Create(credential);
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core.Tests/ClientBaseTest.cs b/src/csharp/Grpc.Core.Tests/CallCredentialsTest.cs
similarity index 66%
rename from src/csharp/Grpc.Core.Tests/ClientBaseTest.cs
rename to src/csharp/Grpc.Core.Tests/CallCredentialsTest.cs
index 2dc10ebe971a2c536bda5dc903b93e23f2b9c389..451963229a40c32f711727994bad9fc978c84cd9 100644
--- a/src/csharp/Grpc.Core.Tests/ClientBaseTest.cs
+++ b/src/csharp/Grpc.Core.Tests/CallCredentialsTest.cs
@@ -32,6 +32,10 @@
 #endregion
 
 using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Threading;
+using System.Threading.Tasks;
 using Grpc.Core;
 using Grpc.Core.Internal;
 using Grpc.Core.Utils;
@@ -39,24 +43,23 @@ using NUnit.Framework;
 
 namespace Grpc.Core.Tests
 {
-    public class ClientBaseTest
+    public class CallCredentialsTest
     {
         [Test]
-        public void GetAuthUriBase_Valid()
+        public void CallCredentials_ComposeAtLeastTwo()
         {
-            Assert.AreEqual("https://some.googleapi.com/", ClientBase.GetAuthUriBase("some.googleapi.com"));
-            Assert.AreEqual("https://some.googleapi.com/", ClientBase.GetAuthUriBase("dns:///some.googleapi.com/"));
-            Assert.AreEqual("https://some.googleapi.com/", ClientBase.GetAuthUriBase("dns:///some.googleapi.com:443/"));
-            Assert.AreEqual("https://some.googleapi.com/", ClientBase.GetAuthUriBase("some.googleapi.com:443/"));
+            Assert.Throws(typeof(ArgumentException), () => CallCredentials.Compose(new FakeCallCredentials()));
         }
 
         [Test]
-        public void GetAuthUriBase_Invalid()
+        public void CallCredentials_ToNativeCredentials()
         {
-            Assert.IsNull(ClientBase.GetAuthUriBase("some.googleapi.com:"));
-            Assert.IsNull(ClientBase.GetAuthUriBase("https://some.googleapi.com/"));
-            Assert.IsNull(ClientBase.GetAuthUriBase("dns://some.googleapi.com:443"));  // just two slashes
-            Assert.IsNull(ClientBase.GetAuthUriBase(""));
+            var composite = CallCredentials.Compose(
+                new MetadataCredentials(async (uri, m) => { await Task.Delay(1); }),
+                new MetadataCredentials(async (uri, m) => { await Task.Delay(2); }));
+            using (var nativeComposite = composite.ToNativeCredentials())
+            {
+            }
         }
     }
 }
diff --git a/src/node/interop/empty.proto b/src/csharp/Grpc.Core.Tests/ChannelCredentialsTest.cs
similarity index 52%
rename from src/node/interop/empty.proto
rename to src/csharp/Grpc.Core.Tests/ChannelCredentialsTest.cs
index 6d0eb937d674ca3ee9aaf9c2ed8313250cd76647..489bf38575686a3367d840abf2e00b4ed2623617 100644
--- a/src/node/interop/empty.proto
+++ b/src/csharp/Grpc.Core.Tests/ChannelCredentialsTest.cs
@@ -1,3 +1,4 @@
+#region Copyright notice and license
 
 // Copyright 2015, Google Inc.
 // All rights reserved.
@@ -28,16 +29,45 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-syntax = "proto3";
+#endregion
 
-package grpc.testing;
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Threading;
+using System.Threading.Tasks;
+using Grpc.Core;
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+using NUnit.Framework;
 
-// An empty message that you can re-use to avoid defining duplicated empty
-// messages in your project. A typical example is to use it as argument or the
-// return value of a service API. For instance:
-//
-//   service Foo {
-//     rpc Bar (grpc.testing.Empty) returns (grpc.testing.Empty) { };
-//   };
-//
-message Empty {}
+namespace Grpc.Core.Tests
+{
+    public class ChannelCredentialsTest
+    {
+        [Test]
+        public void InsecureCredentials_IsNonComposable()
+        {
+            Assert.IsFalse(ChannelCredentials.Insecure.IsComposable);
+        }
+
+        [Test]
+        public void ChannelCredentials_CreateComposite()
+        {
+            var composite = ChannelCredentials.Create(new FakeChannelCredentials(true), new FakeCallCredentials());
+            Assert.IsFalse(composite.IsComposable);
+
+            Assert.Throws(typeof(ArgumentNullException), () => ChannelCredentials.Create(null, new FakeCallCredentials()));
+            Assert.Throws(typeof(ArgumentNullException), () => ChannelCredentials.Create(new FakeChannelCredentials(true), null));
+            
+            // forbid composing non-composable
+            Assert.Throws(typeof(ArgumentException), () => ChannelCredentials.Create(new FakeChannelCredentials(false), new FakeCallCredentials()));
+        }
+
+        [Test]
+        public void ChannelCredentials_CreateWrapped()
+        {
+            ChannelCredentials.Create(new FakeCallCredentials());
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core.Tests/ChannelTest.cs b/src/csharp/Grpc.Core.Tests/ChannelTest.cs
index dfbd92879e7cb969b7f7f9225b5de3bc34d1a8cf..f4ae9abefd803002a91685a86400260b471824bc 100644
--- a/src/csharp/Grpc.Core.Tests/ChannelTest.cs
+++ b/src/csharp/Grpc.Core.Tests/ChannelTest.cs
@@ -44,13 +44,13 @@ namespace Grpc.Core.Tests
         [Test]
         public void Constructor_RejectsInvalidParams()
         {
-            Assert.Throws(typeof(ArgumentNullException), () => new Channel(null, Credentials.Insecure));
+            Assert.Throws(typeof(ArgumentNullException), () => new Channel(null, ChannelCredentials.Insecure));
         }
 
         [Test]
         public void State_IdleAfterCreation()
         {
-            var channel = new Channel("localhost", Credentials.Insecure);
+            var channel = new Channel("localhost", ChannelCredentials.Insecure);
             Assert.AreEqual(ChannelState.Idle, channel.State);
             channel.ShutdownAsync().Wait();
         }
@@ -58,7 +58,7 @@ namespace Grpc.Core.Tests
         [Test]
         public void WaitForStateChangedAsync_InvalidArgument()
         {
-            var channel = new Channel("localhost", Credentials.Insecure);
+            var channel = new Channel("localhost", ChannelCredentials.Insecure);
             Assert.Throws(typeof(ArgumentException), () => channel.WaitForStateChangedAsync(ChannelState.FatalFailure));
             channel.ShutdownAsync().Wait();
         }
@@ -66,7 +66,7 @@ namespace Grpc.Core.Tests
         [Test]
         public void ResolvedTarget()
         {
-            var channel = new Channel("127.0.0.1", Credentials.Insecure);
+            var channel = new Channel("127.0.0.1", ChannelCredentials.Insecure);
             Assert.IsTrue(channel.ResolvedTarget.Contains("127.0.0.1"));
             channel.ShutdownAsync().Wait();
         }
@@ -74,7 +74,7 @@ namespace Grpc.Core.Tests
         [Test]
         public void Shutdown_AllowedOnlyOnce()
         {
-            var channel = new Channel("localhost", Credentials.Insecure);
+            var channel = new Channel("localhost", ChannelCredentials.Insecure);
             channel.ShutdownAsync().Wait();
             Assert.Throws(typeof(InvalidOperationException), () => channel.ShutdownAsync().GetAwaiter().GetResult());
         }
diff --git a/src/node/examples/stock.proto b/src/csharp/Grpc.Core.Tests/FakeCredentials.cs
similarity index 62%
rename from src/node/examples/stock.proto
rename to src/csharp/Grpc.Core.Tests/FakeCredentials.cs
index 5ee2bcbce66cbc72ad3bb2d533c634c0c1b8c8ad..87d55cd276ae5601b84a1dd3b7db97dd4aac5fe7 100644
--- a/src/node/examples/stock.proto
+++ b/src/csharp/Grpc.Core.Tests/FakeCredentials.cs
@@ -1,3 +1,5 @@
+#region Copyright notice and license
+
 // Copyright 2015, Google Inc.
 // All rights reserved.
 //
@@ -27,36 +29,45 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-syntax = "proto3";
+#endregion
 
-package examples;
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Threading;
+using System.Threading.Tasks;
+using Grpc.Core;
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+using NUnit.Framework;
 
-// Protocol type definitions
-message StockRequest {
-  string symbol = 1;
-  int32 num_trades_to_watch = 2;
-}
+namespace Grpc.Core.Tests
+{
+    internal class FakeChannelCredentials : ChannelCredentials
+    {
+        readonly bool composable;
 
-message StockReply {
-  float price = 1;
-  string symbol = 2;
-}
+        public FakeChannelCredentials(bool composable)
+        {
+            this.composable = composable;
+        }
 
+        internal override bool IsComposable
+        {
+            get { return composable; }
+        }
 
-// Interface exported by the server
-service Stock {
-  // Simple blocking RPC
-  rpc GetLastTradePrice(StockRequest) returns (StockReply) {
-  }
-  // Bidirectional streaming RPC
-  rpc GetLastTradePriceMultiple(stream StockRequest) returns
-    (stream StockReply) {
-  }
-  // Unidirectional server-to-client streaming RPC
-  rpc WatchFutureTrades(StockRequest) returns (stream StockReply) {
-  }
-  // Unidirectional client-to-server streaming RPC
-  rpc GetHighestTradePrice(stream StockRequest) returns (StockReply) {
-  }
+        internal override CredentialsSafeHandle ToNativeCredentials()
+        {
+            return null;
+        }
+    }
 
+    internal class FakeCallCredentials : CallCredentials
+    {
+        internal override CredentialsSafeHandle ToNativeCredentials()
+        {
+            return null;
+        }
+    }
 }
diff --git a/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj b/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj
index f730936062daa1efeec6c00c425a27cbcde9a25d..91d072ababecdd6360923320f302fd7a086b74a2 100644
--- a/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj
+++ b/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj
@@ -63,8 +63,10 @@
     <Compile Include="..\Grpc.Core\Version.cs">
       <Link>Version.cs</Link>
     </Compile>
-    <Compile Include="ClientBaseTest.cs" />
+    <Compile Include="CallCredentialsTest.cs" />
+    <Compile Include="FakeCredentials.cs" />
     <Compile Include="MarshallingErrorsTest.cs" />
+    <Compile Include="ChannelCredentialsTest.cs" />
     <Compile Include="ShutdownTest.cs" />
     <Compile Include="Internal\AsyncCallTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
diff --git a/src/csharp/Grpc.Core.Tests/Internal/AsyncCallTest.cs b/src/csharp/Grpc.Core.Tests/Internal/AsyncCallTest.cs
index 685c5f7d6cb7a314cbfdee015e07ed79cd1a5efd..246072bff1305cc605e671fa3c766eb5d235acb7 100644
--- a/src/csharp/Grpc.Core.Tests/Internal/AsyncCallTest.cs
+++ b/src/csharp/Grpc.Core.Tests/Internal/AsyncCallTest.cs
@@ -49,7 +49,7 @@ namespace Grpc.Core.Internal.Tests
         [SetUp]
         public void Init()
         {
-            channel = new Channel("localhost", Credentials.Insecure);
+            channel = new Channel("localhost", ChannelCredentials.Insecure);
 
             fakeCall = new FakeNativeCall();
 
diff --git a/src/csharp/Grpc.Core.Tests/Internal/CompletionQueueSafeHandleTest.cs b/src/csharp/Grpc.Core.Tests/Internal/CompletionQueueSafeHandleTest.cs
index a2ee183272443069e1eb76213bad4364b4a6430b..c6843f10af25744153b8da6095eade1c4d260d92 100644
--- a/src/csharp/Grpc.Core.Tests/Internal/CompletionQueueSafeHandleTest.cs
+++ b/src/csharp/Grpc.Core.Tests/Internal/CompletionQueueSafeHandleTest.cs
@@ -45,17 +45,21 @@ namespace Grpc.Core.Internal.Tests
         [Test]
         public void CreateAndDestroy()
         {
+            GrpcEnvironment.AddRef();
             var cq = CompletionQueueSafeHandle.Create();
             cq.Dispose();
+            GrpcEnvironment.Release();
         }
 
         [Test]
         public void CreateAndShutdown()
         {
+            GrpcEnvironment.AddRef();
             var cq = CompletionQueueSafeHandle.Create();
             cq.Shutdown();
             var ev = cq.Next();
             cq.Dispose();
+            GrpcEnvironment.Release();
             Assert.AreEqual(GRPCCompletionType.Shutdown, ev.type);
             Assert.AreNotEqual(IntPtr.Zero, ev.success);
             Assert.AreEqual(IntPtr.Zero, ev.tag);
diff --git a/src/csharp/Grpc.Core.Tests/MarshallingErrorsTest.cs b/src/csharp/Grpc.Core.Tests/MarshallingErrorsTest.cs
index 83707e0c6da91c35da05d321341a6617537925d0..37fb36946aff1a3d8a5fce783eb94ea72e50e9bc 100644
--- a/src/csharp/Grpc.Core.Tests/MarshallingErrorsTest.cs
+++ b/src/csharp/Grpc.Core.Tests/MarshallingErrorsTest.cs
@@ -119,7 +119,7 @@ namespace Grpc.Core.Tests
         [Test]
         public void RequestParsingError_UnaryRequest()
         {
-            helper.UnaryHandler = new  UnaryServerMethod<string, string>((request, context) =>
+            helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
             {
                 return Task.FromResult("RESPONSE");
             });
@@ -161,7 +161,7 @@ namespace Grpc.Core.Tests
         {
             helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) =>
             {
-                CollectionAssert.AreEqual(new [] {"A", "B"}, await requestStream.ToListAsync());
+                CollectionAssert.AreEqual(new[] { "A", "B" }, await requestStream.ToListAsync());
                 return "RESPONSE";
             });
             var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall());
diff --git a/src/csharp/Grpc.Core.Tests/MockServiceHelper.cs b/src/csharp/Grpc.Core.Tests/MockServiceHelper.cs
index 765732c7687eaa7a34e490cc6ad93c450fad5f9c..567e04eddccbc4cf95d1a11b79267ca1571fae23 100644
--- a/src/csharp/Grpc.Core.Tests/MockServiceHelper.cs
+++ b/src/csharp/Grpc.Core.Tests/MockServiceHelper.cs
@@ -154,7 +154,7 @@ namespace Grpc.Core.Tests
         {
             if (channel == null)
             {
-                channel = new Channel(Host, GetServer().Ports.Single().BoundPort, Credentials.Insecure);
+                channel = new Channel(Host, GetServer().Ports.Single().BoundPort, ChannelCredentials.Insecure);
             }
             return channel;
         }
diff --git a/src/csharp/Grpc.Core/CallCredentials.cs b/src/csharp/Grpc.Core/CallCredentials.cs
new file mode 100644
index 0000000000000000000000000000000000000000..809c9f412d0ed4bf4126561fb5a6b9f5b29fe89f
--- /dev/null
+++ b/src/csharp/Grpc.Core/CallCredentials.cs
@@ -0,0 +1,142 @@
+#region Copyright notice and license
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+
+namespace Grpc.Core
+{
+    /// <summary>
+    /// Client-side call credentials. Provide authorization with per-call granularity.
+    /// </summary>
+    public abstract class CallCredentials
+    {
+        /// <summary>
+        /// Composes multiple multiple <c>CallCredentials</c> objects into
+        /// a single <c>CallCredentials</c> object.
+        /// </summary>
+        /// <param name="credentials">credentials to compose</param>
+        /// <returns>The new <c>CompositeCallCredentials</c></returns>
+        public static CallCredentials Compose(params CallCredentials[] credentials)
+        {
+            return new CompositeCallCredentials(credentials);
+        }
+
+        /// <summary>
+        /// Creates native object for the credentials.
+        /// </summary>
+        /// <returns>The native credentials.</returns>
+        internal abstract CredentialsSafeHandle ToNativeCredentials();
+    }
+
+    /// <summary>
+    /// Asynchronous authentication interceptor for <see cref="MetadataCredentials"/>.
+    /// </summary>
+    /// <param name="authUri">URL of a service to which current remote call needs to authenticate</param>
+    /// <param name="metadata">Metadata to populate with entries that will be added to outgoing call's headers.</param>
+    /// <returns></returns>
+    public delegate Task AsyncAuthInterceptor(string authUri, Metadata metadata);
+
+    /// <summary>
+    /// Client-side credentials that delegate metadata based auth to an interceptor.
+    /// The interceptor is automatically invoked for each remote call that uses <c>MetadataCredentials.</c>
+    /// </summary>
+    public class MetadataCredentials : CallCredentials
+    {
+        readonly AsyncAuthInterceptor interceptor;
+
+        /// <summary>
+        /// Initializes a new instance of <c>MetadataCredentials</c> class.
+        /// </summary>
+        /// <param name="interceptor">authentication interceptor</param>
+        public MetadataCredentials(AsyncAuthInterceptor interceptor)
+        {
+            this.interceptor = interceptor;
+        }
+
+        internal override CredentialsSafeHandle ToNativeCredentials()
+        {
+            NativeMetadataCredentialsPlugin plugin = new NativeMetadataCredentialsPlugin(interceptor);
+            return plugin.Credentials;
+        }
+    }
+
+    /// <summary>
+    /// Credentials that allow composing multiple credentials objects into one <see cref="CallCredentials"/> object.
+    /// </summary>
+    internal sealed class CompositeCallCredentials : CallCredentials
+    {
+        readonly List<CallCredentials> credentials;
+
+        /// <summary>
+        /// Initializes a new instance of <c>CompositeCallCredentials</c> class.
+        /// The resulting credentials object will be composite of all the credentials specified as parameters.
+        /// </summary>
+        /// <param name="credentials">credentials to compose</param>
+        public CompositeCallCredentials(params CallCredentials[] credentials)
+        {
+            Preconditions.CheckArgument(credentials.Length >= 2, "Composite credentials object can only be created from 2 or more credentials.");
+            this.credentials = new List<CallCredentials>(credentials);
+        }
+
+        internal override CredentialsSafeHandle ToNativeCredentials()
+        {
+            return ToNativeRecursive(0);
+        }
+
+        // Recursive descent makes managing lifetime of intermediate CredentialSafeHandle instances easier.
+        // In practice, we won't usually see composites from more than two credentials anyway.
+        private CredentialsSafeHandle ToNativeRecursive(int startIndex)
+        {
+            if (startIndex == credentials.Count - 1)
+            {
+                return credentials[startIndex].ToNativeCredentials();
+            }
+
+            using (var cred1 = credentials[startIndex].ToNativeCredentials())
+            using (var cred2 = ToNativeRecursive(startIndex + 1))
+            {
+                var nativeComposite = CredentialsSafeHandle.CreateComposite(cred1, cred2);
+                if (nativeComposite.IsInvalid)
+                {
+                    throw new ArgumentException("Error creating native composite credentials. Likely, this is because you are trying to compose incompatible credentials.");
+                }
+                return nativeComposite;
+            }
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core/CallOptions.cs b/src/csharp/Grpc.Core/CallOptions.cs
index c3bc9c31564753582c156b54a169353c8662430e..c0f94c63c2f01bc3853fd7b42f55b2f6812a1d94 100644
--- a/src/csharp/Grpc.Core/CallOptions.cs
+++ b/src/csharp/Grpc.Core/CallOptions.cs
@@ -49,6 +49,7 @@ namespace Grpc.Core
         CancellationToken cancellationToken;
         WriteOptions writeOptions;
         ContextPropagationToken propagationToken;
+        CallCredentials credentials;
 
         /// <summary>
         /// Creates a new instance of <c>CallOptions</c> struct.
@@ -58,14 +59,16 @@ namespace Grpc.Core
         /// <param name="cancellationToken">Can be used to request cancellation of the call.</param>
         /// <param name="writeOptions">Write options that will be used for this call.</param>
         /// <param name="propagationToken">Context propagation token obtained from <see cref="ServerCallContext"/>.</param>
+        /// <param name="credentials">Credentials to use for this call.</param>
         public CallOptions(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken),
-                           WriteOptions writeOptions = null, ContextPropagationToken propagationToken = null)
+                           WriteOptions writeOptions = null, ContextPropagationToken propagationToken = null, CallCredentials credentials = null)
         {
             this.headers = headers;
             this.deadline = deadline;
             this.cancellationToken = cancellationToken;
             this.writeOptions = writeOptions;
             this.propagationToken = propagationToken;
+            this.credentials = credentials;
         }
 
         /// <summary>
@@ -114,6 +117,17 @@ namespace Grpc.Core
             }
         }
 
+        /// <summary>
+        /// Credentials to use for this call.
+        /// </summary>
+        public CallCredentials Credentials
+        {
+            get
+            {
+                return this.credentials;
+            }
+        }
+
         /// <summary>
         /// Returns new instance of <see cref="CallOptions"/> with
         /// <c>Headers</c> set to the value provided. Values of all other fields are preserved.
diff --git a/src/csharp/Grpc.Core/Channel.cs b/src/csharp/Grpc.Core/Channel.cs
index f1942727cde48a9837a533332e7f9a34bcd3aac1..6b99055d4c893cb7b92d703d11b4bdbc2360fb71 100644
--- a/src/csharp/Grpc.Core/Channel.cs
+++ b/src/csharp/Grpc.Core/Channel.cs
@@ -68,7 +68,7 @@ namespace Grpc.Core
         /// <param name="target">Target of the channel.</param>
         /// <param name="credentials">Credentials to secure the channel.</param>
         /// <param name="options">Channel options.</param>
-        public Channel(string target, Credentials credentials, IEnumerable<ChannelOption> options = null)
+        public Channel(string target, ChannelCredentials credentials, IEnumerable<ChannelOption> options = null)
         {
             this.target = Preconditions.CheckNotNull(target, "target");
             this.environment = GrpcEnvironment.AddRef();
@@ -96,7 +96,7 @@ namespace Grpc.Core
         /// <param name="port">The port.</param>
         /// <param name="credentials">Credentials to secure the channel.</param>
         /// <param name="options">Channel options.</param>
-        public Channel(string host, int port, Credentials credentials, IEnumerable<ChannelOption> options = null) :
+        public Channel(string host, int port, ChannelCredentials credentials, IEnumerable<ChannelOption> options = null) :
             this(string.Format("{0}:{1}", host, port), credentials, options)
         {
         }
diff --git a/src/csharp/Grpc.Core/ChannelCredentials.cs b/src/csharp/Grpc.Core/ChannelCredentials.cs
new file mode 100644
index 0000000000000000000000000000000000000000..599674e02bdbf71d430097693888c04da7318601
--- /dev/null
+++ b/src/csharp/Grpc.Core/ChannelCredentials.cs
@@ -0,0 +1,238 @@
+#region Copyright notice and license
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+
+namespace Grpc.Core
+{
+    /// <summary>
+    /// Client-side channel credentials. Used for creation of a secure channel.
+    /// </summary>
+    public abstract class ChannelCredentials
+    {
+        static readonly ChannelCredentials InsecureInstance = new InsecureCredentialsImpl();
+
+        /// <summary>
+        /// Returns instance of credentials that provides no security and 
+        /// will result in creating an unsecure channel with no encryption whatsoever.
+        /// </summary>
+        public static ChannelCredentials Insecure
+        {
+            get
+            {
+                return InsecureInstance;
+            }
+        }
+
+        /// <summary>
+        /// Creates a new instance of <c>ChannelCredentials</c> class by composing
+        /// given channel credentials with call credentials.
+        /// </summary>
+        /// <param name="channelCredentials">Channel credentials.</param>
+        /// <param name="callCredentials">Call credentials.</param>
+        /// <returns>The new composite <c>ChannelCredentials</c></returns>
+        public static ChannelCredentials Create(ChannelCredentials channelCredentials, CallCredentials callCredentials)
+        {
+            return new CompositeChannelCredentials(channelCredentials, callCredentials);
+        }
+
+        /// <summary>
+        /// Creates a new instance of <c>ChannelCredentials</c> by wrapping
+        /// an instance of <c>CallCredentials</c>.
+        /// </summary>
+        /// <param name="callCredentials">Call credentials.</param>
+        /// <returns>The <c>ChannelCredentials</c> wrapping given call credentials.</returns>
+        public static ChannelCredentials Create(CallCredentials callCredentials)
+        {
+            return new WrappedCallCredentials(callCredentials);
+        }
+
+        /// <summary>
+        /// Creates native object for the credentials. May return null if insecure channel
+        /// should be created.
+        /// </summary>
+        /// <returns>The native credentials.</returns>
+        internal abstract CredentialsSafeHandle ToNativeCredentials();
+
+        /// <summary>
+        /// Returns <c>true</c> if this credential type allows being composed by <c>CompositeCredentials</c>.
+        /// </summary>
+        internal virtual bool IsComposable
+        {
+            get { return false; }
+        }
+
+        private sealed class InsecureCredentialsImpl : ChannelCredentials
+        {
+            internal override CredentialsSafeHandle ToNativeCredentials()
+            {
+                return null;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Client-side SSL credentials.
+    /// </summary>
+    public sealed class SslCredentials : ChannelCredentials
+    {
+        readonly string rootCertificates;
+        readonly KeyCertificatePair keyCertificatePair;
+
+        /// <summary>
+        /// Creates client-side SSL credentials loaded from
+        /// disk file pointed to by the GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment variable.
+        /// If that fails, gets the roots certificates from a well known place on disk.
+        /// </summary>
+        public SslCredentials() : this(null, null)
+        {
+        }
+
+        /// <summary>
+        /// Creates client-side SSL credentials from
+        /// a string containing PEM encoded root certificates.
+        /// </summary>
+        public SslCredentials(string rootCertificates) : this(rootCertificates, null)
+        {
+        }
+            
+        /// <summary>
+        /// Creates client-side SSL credentials.
+        /// </summary>
+        /// <param name="rootCertificates">string containing PEM encoded server root certificates.</param>
+        /// <param name="keyCertificatePair">a key certificate pair.</param>
+        public SslCredentials(string rootCertificates, KeyCertificatePair keyCertificatePair)
+        {
+            this.rootCertificates = rootCertificates;
+            this.keyCertificatePair = keyCertificatePair;
+        }
+
+        /// <summary>
+        /// PEM encoding of the server root certificates.
+        /// </summary>
+        public string RootCertificates
+        {
+            get
+            {
+                return this.rootCertificates;
+            }
+        }
+
+        /// <summary>
+        /// Client side key and certificate pair.
+        /// If null, client will not use key and certificate pair.
+        /// </summary>
+        public KeyCertificatePair KeyCertificatePair
+        {
+            get
+            {
+                return this.keyCertificatePair;
+            }
+        }
+
+        // Composing composite makes no sense.
+        internal override bool IsComposable
+        {
+            get { return true; }
+        }
+
+        internal override CredentialsSafeHandle ToNativeCredentials()
+        {
+            return CredentialsSafeHandle.CreateSslCredentials(rootCertificates, keyCertificatePair);
+        }
+    }
+
+    /// <summary>
+    /// Credentials that allow composing one <see cref="ChannelCredentials"/> object and 
+    /// one or more <see cref="CallCredentials"/> objects into a single <see cref="ChannelCredentials"/>.
+    /// </summary>
+    internal sealed class CompositeChannelCredentials : ChannelCredentials
+    {
+        readonly ChannelCredentials channelCredentials;
+        readonly CallCredentials callCredentials;
+
+        /// <summary>
+        /// Initializes a new instance of <c>CompositeChannelCredentials</c> class.
+        /// The resulting credentials object will be composite of all the credentials specified as parameters.
+        /// </summary>
+        /// <param name="channelCredentials">channelCredentials to compose</param>
+        /// <param name="callCredentials">channelCredentials to compose</param>
+        public CompositeChannelCredentials(ChannelCredentials channelCredentials, CallCredentials callCredentials)
+        {
+            this.channelCredentials = Preconditions.CheckNotNull(channelCredentials);
+            this.callCredentials = Preconditions.CheckNotNull(callCredentials);
+            Preconditions.CheckArgument(channelCredentials.IsComposable, "Supplied channel credentials do not allow composition.");
+        }
+
+        internal override CredentialsSafeHandle ToNativeCredentials()
+        {
+            using (var cred1 = channelCredentials.ToNativeCredentials())
+            using (var cred2 = callCredentials.ToNativeCredentials())
+            {
+                var nativeComposite = CredentialsSafeHandle.CreateComposite(cred1, cred2);
+                if (nativeComposite.IsInvalid)
+                {
+                    throw new ArgumentException("Error creating native composite credentials. Likely, this is because you are trying to compose incompatible credentials.");
+                }
+                return nativeComposite;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Credentials wrapping <see cref="CallCredentials"/> as <see cref="ChannelCredentials"/>.
+    /// </summary>
+    internal sealed class WrappedCallCredentials : ChannelCredentials
+    {
+        readonly CallCredentials callCredentials;
+
+        /// <summary>
+        /// Wraps instance of <c>CallCredentials</c> as <c>ChannelCredentials</c>.
+        /// </summary>
+        /// <param name="callCredentials">credentials to wrap</param>
+        public WrappedCallCredentials(CallCredentials callCredentials)
+        {
+            this.callCredentials = Preconditions.CheckNotNull(callCredentials);
+        }
+
+        internal override CredentialsSafeHandle ToNativeCredentials()
+        {
+            return callCredentials.ToNativeCredentials();
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core/ClientBase.cs b/src/csharp/Grpc.Core/ClientBase.cs
index f4533e735cbc802fbab34ee1766c13b3a5af7c7f..e5b398062b2c489891d38cc71ffee03eb274e059 100644
--- a/src/csharp/Grpc.Core/ClientBase.cs
+++ b/src/csharp/Grpc.Core/ClientBase.cs
@@ -40,18 +40,17 @@ namespace Grpc.Core
     /// <summary>
     /// Interceptor for call headers.
     /// </summary>
-    public delegate void HeaderInterceptor(IMethod method, string authUri, Metadata metadata);
+    /// <remarks>Header interceptor is no longer to recommented way to perform authentication.
+    /// For header (initial metadata) based auth such as OAuth2 or JWT access token, use <see cref="MetadataCredentials"/>.
+    /// </remarks>
+    public delegate void HeaderInterceptor(IMethod method, Metadata metadata);
 
     /// <summary>
     /// Base class for client-side stubs.
     /// </summary>
     public abstract class ClientBase
     {
-        // Regex for removal of the optional DNS scheme, trailing port, and trailing backslash
-        static readonly Regex ChannelTargetPattern = new Regex(@"^(dns:\/{3})?([^:\/]+)(:\d+)?\/?$");
-
         readonly Channel channel;
-        readonly string authUriBase;
 
         /// <summary>
         /// Initializes a new instance of <c>ClientBase</c> class.
@@ -60,13 +59,14 @@ namespace Grpc.Core
         public ClientBase(Channel channel)
         {
             this.channel = channel;
-            this.authUriBase = GetAuthUriBase(channel.Target);
         }
 
         /// <summary>
-        /// Can be used to register a custom header (request metadata) interceptor.
+        /// Can be used to register a custom header interceptor.
         /// The interceptor is invoked each time a new call on this client is started.
+        /// It is not recommented to use header interceptor to add auth headers to RPC calls.
         /// </summary>
+        /// <seealso cref="HeaderInterceptor"/>
         public HeaderInterceptor HeaderInterceptor
         {
             get;
@@ -115,24 +115,9 @@ namespace Grpc.Core
                 {
                     options = options.WithHeaders(new Metadata());
                 }
-                var authUri = authUriBase != null ? authUriBase + method.ServiceName : null;
-                interceptor(method, authUri, options.Headers);
+                interceptor(method, options.Headers);
             }
             return new CallInvocationDetails<TRequest, TResponse>(channel, method, Host, options);
         }
-
-        /// <summary>
-        /// Creates Auth URI base from channel's target (the one passed at channel creation).
-        /// Fully-qualified service name is to be appended to this.
-        /// </summary>
-        internal static string GetAuthUriBase(string target)
-        {
-            var match = ChannelTargetPattern.Match(target);
-            if (!match.Success)
-            {
-                return null;
-            }
-            return "https://" + match.Groups[2].Value + "/";
-        }
     }
 }
diff --git a/src/csharp/Grpc.Core/Credentials.cs b/src/csharp/Grpc.Core/Credentials.cs
deleted file mode 100644
index 4fcac0c4c00e97d6c5c25390ee1027c8912e8c0a..0000000000000000000000000000000000000000
--- a/src/csharp/Grpc.Core/Credentials.cs
+++ /dev/null
@@ -1,138 +0,0 @@
-#region Copyright notice and license
-
-// Copyright 2015, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#endregion
-
-using System;
-using Grpc.Core.Internal;
-
-namespace Grpc.Core
-{
-    /// <summary>
-    /// Client-side credentials. Used for creation of a secure channel.
-    /// </summary>
-    public abstract class Credentials
-    {
-        static readonly Credentials InsecureInstance = new InsecureCredentialsImpl();
-
-        /// <summary>
-        /// Returns instance of credential that provides no security and 
-        /// will result in creating an unsecure channel with no encryption whatsoever.
-        /// </summary>
-        public static Credentials Insecure
-        {
-            get
-            {
-                return InsecureInstance;
-            }
-        }
-
-        /// <summary>
-        /// Creates native object for the credentials. May return null if insecure channel
-        /// should be created.
-        /// </summary>
-        /// <returns>The native credentials.</returns>
-        internal abstract CredentialsSafeHandle ToNativeCredentials();
-
-        private sealed class InsecureCredentialsImpl : Credentials
-        {
-            internal override CredentialsSafeHandle ToNativeCredentials()
-            {
-                return null;
-            }
-        }
-    }
-
-    /// <summary>
-    /// Client-side SSL credentials.
-    /// </summary>
-    public sealed class SslCredentials : Credentials
-    {
-        readonly string rootCertificates;
-        readonly KeyCertificatePair keyCertificatePair;
-
-        /// <summary>
-        /// Creates client-side SSL credentials loaded from
-        /// disk file pointed to by the GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment variable.
-        /// If that fails, gets the roots certificates from a well known place on disk.
-        /// </summary>
-        public SslCredentials() : this(null, null)
-        {
-        }
-
-        /// <summary>
-        /// Creates client-side SSL credentials from
-        /// a string containing PEM encoded root certificates.
-        /// </summary>
-        public SslCredentials(string rootCertificates) : this(rootCertificates, null)
-        {
-        }
-            
-        /// <summary>
-        /// Creates client-side SSL credentials.
-        /// </summary>
-        /// <param name="rootCertificates">string containing PEM encoded server root certificates.</param>
-        /// <param name="keyCertificatePair">a key certificate pair.</param>
-        public SslCredentials(string rootCertificates, KeyCertificatePair keyCertificatePair)
-        {
-            this.rootCertificates = rootCertificates;
-            this.keyCertificatePair = keyCertificatePair;
-        }
-
-        /// <summary>
-        /// PEM encoding of the server root certificates.
-        /// </summary>
-        public string RootCertificates
-        {
-            get
-            {
-                return this.rootCertificates;
-            }
-        }
-
-        /// <summary>
-        /// Client side key and certificate pair.
-        /// If null, client will not use key and certificate pair.
-        /// </summary>
-        public KeyCertificatePair KeyCertificatePair
-        {
-            get
-            {
-                return this.keyCertificatePair;
-            }
-        }
-
-        internal override CredentialsSafeHandle ToNativeCredentials()
-        {
-            return CredentialsSafeHandle.CreateSslCredentials(rootCertificates, keyCertificatePair);
-        }
-    }
-}
diff --git a/src/csharp/Grpc.Core/Grpc.Core.csproj b/src/csharp/Grpc.Core/Grpc.Core.csproj
index ad2af17bc75abcd8b81568f35ee8b35a6a127c5a..92d4e19eac25bc10c5d908be065230273a5e8f85 100644
--- a/src/csharp/Grpc.Core/Grpc.Core.csproj
+++ b/src/csharp/Grpc.Core/Grpc.Core.csproj
@@ -48,7 +48,9 @@
   <ItemGroup>
     <Compile Include="AsyncDuplexStreamingCall.cs" />
     <Compile Include="AsyncServerStreamingCall.cs" />
+    <Compile Include="CallCredentials.cs" />
     <Compile Include="IClientStreamWriter.cs" />
+    <Compile Include="Internal\NativeMetadataCredentialsPlugin.cs" />
     <Compile Include="Internal\INativeCall.cs" />
     <Compile Include="IServerStreamWriter.cs" />
     <Compile Include="IAsyncStreamWriter.cs" />
@@ -79,7 +81,7 @@
     <Compile Include="Utils\AsyncStreamExtensions.cs" />
     <Compile Include="Utils\BenchmarkUtil.cs" />
     <Compile Include="Internal\CredentialsSafeHandle.cs" />
-    <Compile Include="Credentials.cs" />
+    <Compile Include="ChannelCredentials.cs" />
     <Compile Include="Internal\ChannelArgsSafeHandle.cs" />
     <Compile Include="Internal\AsyncCompletion.cs" />
     <Compile Include="Internal\AsyncCallBase.cs" />
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCall.cs b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
index e3b00781c6216885cc9025ed26f3ef35d388e5b7..800462c85407a45a822a4fa5e00aa863255787b3 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCall.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
@@ -344,9 +344,13 @@ namespace Grpc.Core.Internal
 
             var parentCall = details.Options.PropagationToken != null ? details.Options.PropagationToken.ParentCall : CallSafeHandle.NullInstance;
 
-            return details.Channel.Handle.CreateCall(environment.CompletionRegistry,
-                parentCall, ContextPropagationToken.DefaultMask, cq,
-                details.Method, details.Host, Timespec.FromDateTime(details.Options.Deadline.Value));
+            var credentials = details.Options.Credentials;
+            using (var nativeCredentials = credentials != null ? credentials.ToNativeCredentials() : null)
+            {
+                return details.Channel.Handle.CreateCall(environment.CompletionRegistry,
+                    parentCall, ContextPropagationToken.DefaultMask, cq,
+                    details.Method, details.Host, Timespec.FromDateTime(details.Options.Deadline.Value), nativeCredentials);
+            }
         }
 
         // Make sure that once cancellationToken for this call is cancelled, Cancel() will be called.
diff --git a/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
index c3611a7761f5213e58c84a08a30a67b693a88f97..0be7a4dd3a1f3033321072360457ca7865baef95 100644
--- a/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
@@ -98,6 +98,9 @@ namespace Grpc.Core.Internal
         static extern GRPCCallError grpcsharp_call_send_initial_metadata(CallSafeHandle call,
             BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray);
 
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_set_credentials(CallSafeHandle call, CredentialsSafeHandle credentials);
+
         [DllImport("grpc_csharp_ext.dll")]
         static extern CStringSafeHandle grpcsharp_call_get_peer(CallSafeHandle call);
 
@@ -113,6 +116,11 @@ namespace Grpc.Core.Internal
             this.completionRegistry = completionRegistry;
         }
 
+        public void SetCredentials(CredentialsSafeHandle credentials)
+        {
+            grpcsharp_call_set_credentials(this, credentials).CheckOk();
+        }
+
         public void StartUnary(UnaryResponseClientHandler callback, byte[] payload, MetadataArraySafeHandle metadataArray, WriteFlags writeFlags)
         {
             var ctx = BatchContextSafeHandle.Create();
diff --git a/src/csharp/Grpc.Core/Internal/ChannelSafeHandle.cs b/src/csharp/Grpc.Core/Internal/ChannelSafeHandle.cs
index 7a1c6e3dacd59885feaf6ce4020e3dc7ac30b168..d270d77526ffd44e69e6da66728bf614deef9852 100644
--- a/src/csharp/Grpc.Core/Internal/ChannelSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/ChannelSafeHandle.cs
@@ -82,9 +82,13 @@ namespace Grpc.Core.Internal
             return grpcsharp_secure_channel_create(credentials, target, channelArgs);
         }
 
-        public CallSafeHandle CreateCall(CompletionRegistry registry, CallSafeHandle parentCall, ContextPropagationFlags propagationMask, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline)
+        public CallSafeHandle CreateCall(CompletionRegistry registry, CallSafeHandle parentCall, ContextPropagationFlags propagationMask, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline, CredentialsSafeHandle credentials)
         {
             var result = grpcsharp_channel_create_call(this, parentCall, propagationMask, cq, method, host, deadline);
+            if (credentials != null)
+            {
+                result.SetCredentials(credentials);
+            }
             result.SetCompletionRegistry(registry);
             return result;
         }
diff --git a/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs
index feed33536246720f578c66223165c44752dc36b9..bab45108e02a060952e8b96dcc64cd807dd63779 100644
--- a/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs
@@ -43,6 +43,9 @@ namespace Grpc.Core.Internal
         [DllImport("grpc_csharp_ext.dll", CharSet = CharSet.Ansi)]
         static extern CredentialsSafeHandle grpcsharp_ssl_credentials_create(string pemRootCerts, string keyCertPairCertChain, string keyCertPairPrivateKey);
 
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern CredentialsSafeHandle grpcsharp_composite_credentials_create(CredentialsSafeHandle creds1, CredentialsSafeHandle creds2);
+
         [DllImport("grpc_csharp_ext.dll")]
         static extern void grpcsharp_credentials_release(IntPtr credentials);
 
@@ -69,6 +72,11 @@ namespace Grpc.Core.Internal
             }
         }
 
+        public static CredentialsSafeHandle CreateComposite(CredentialsSafeHandle creds1, CredentialsSafeHandle creds2)
+        {
+            return grpcsharp_composite_credentials_create(creds1, creds2);
+        }
+
         protected override bool ReleaseHandle()
         {
             grpcsharp_credentials_release(handle);
diff --git a/src/csharp/Grpc.Core/Internal/NativeMetadataCredentialsPlugin.cs b/src/csharp/Grpc.Core/Internal/NativeMetadataCredentialsPlugin.cs
new file mode 100644
index 0000000000000000000000000000000000000000..6662a73b17a61b077a984fea1dcfe9fa243a3f6b
--- /dev/null
+++ b/src/csharp/Grpc.Core/Internal/NativeMetadataCredentialsPlugin.cs
@@ -0,0 +1,112 @@
+#region Copyright notice and license
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#endregion
+using System;
+using System.Runtime.InteropServices;
+using System.Threading;
+using System.Threading.Tasks;
+
+using Grpc.Core.Logging;
+using Grpc.Core.Utils;
+
+namespace Grpc.Core.Internal
+{
+    internal delegate void NativeMetadataInterceptor(IntPtr statePtr, IntPtr serviceUrlPtr, IntPtr callbackPtr, IntPtr userDataPtr, bool isDestroy);
+
+    internal class NativeMetadataCredentialsPlugin
+    {
+        const string GetMetadataExceptionMsg = "Exception occured in metadata credentials plugin.";
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<NativeMetadataCredentialsPlugin>();
+
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern CredentialsSafeHandle grpcsharp_metadata_credentials_create_from_plugin(NativeMetadataInterceptor interceptor);
+        
+        [DllImport("grpc_csharp_ext.dll", CharSet = CharSet.Ansi)]
+        static extern void grpcsharp_metadata_credentials_notify_from_plugin(IntPtr callbackPtr, IntPtr userData, MetadataArraySafeHandle metadataArray, StatusCode statusCode, string errorDetails);
+
+        AsyncAuthInterceptor interceptor;
+        GCHandle gcHandle;
+        NativeMetadataInterceptor nativeInterceptor;
+        CredentialsSafeHandle credentials;
+
+        public NativeMetadataCredentialsPlugin(AsyncAuthInterceptor interceptor)
+        {
+            this.interceptor = Preconditions.CheckNotNull(interceptor, "interceptor");
+            this.nativeInterceptor = NativeMetadataInterceptorHandler;
+
+            // Make sure the callback doesn't get garbage collected until it is destroyed.
+            this.gcHandle = GCHandle.Alloc(this.nativeInterceptor, GCHandleType.Normal);
+            this.credentials = grpcsharp_metadata_credentials_create_from_plugin(nativeInterceptor);
+        }
+
+        public CredentialsSafeHandle Credentials
+        {
+            get { return credentials; }
+        }
+
+        private void NativeMetadataInterceptorHandler(IntPtr statePtr, IntPtr serviceUrlPtr, IntPtr callbackPtr, IntPtr userDataPtr, bool isDestroy)
+        {
+            if (isDestroy)
+            {
+                gcHandle.Free();
+                return;
+            }
+
+            try
+            {
+                string serviceUrl = Marshal.PtrToStringAnsi(serviceUrlPtr);
+                StartGetMetadata(serviceUrl, callbackPtr, userDataPtr);
+            }
+            catch (Exception e)
+            {
+                grpcsharp_metadata_credentials_notify_from_plugin(callbackPtr, userDataPtr, null, StatusCode.Unknown, GetMetadataExceptionMsg);
+                Logger.Error(e, GetMetadataExceptionMsg);
+            }
+        }
+
+        private async void StartGetMetadata(string serviceUrl, IntPtr callbackPtr, IntPtr userDataPtr)
+        {
+            try
+            {
+                var metadata = new Metadata();
+                await interceptor(serviceUrl, metadata);
+                using (var metadataArray = MetadataArraySafeHandle.Create(metadata))
+                {
+                    grpcsharp_metadata_credentials_notify_from_plugin(callbackPtr, userDataPtr, metadataArray, StatusCode.OK, null);
+                }
+            }
+            catch (Exception e)
+            {
+                grpcsharp_metadata_credentials_notify_from_plugin(callbackPtr, userDataPtr, null, StatusCode.Unknown, GetMetadataExceptionMsg);
+                Logger.Error(e, GetMetadataExceptionMsg);
+            }
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Examples.MathClient/MathClient.cs b/src/csharp/Grpc.Examples.MathClient/MathClient.cs
index 01e4a80babc119d666f69ce636c87f77286cd726..64e429ed5a32001bf89b10172ad73c40adb79ad0 100644
--- a/src/csharp/Grpc.Examples.MathClient/MathClient.cs
+++ b/src/csharp/Grpc.Examples.MathClient/MathClient.cs
@@ -39,7 +39,7 @@ namespace Math
     {
         public static void Main(string[] args)
         {
-            var channel = new Channel("127.0.0.1", 23456, Credentials.Insecure);
+            var channel = new Channel("127.0.0.1", 23456, ChannelCredentials.Insecure);
             Math.IMathClient client = new Math.MathClient(channel);
             MathExamples.DivExample(client);
 
diff --git a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
index e2975b5da93fd265899100aee3d5ec6d442119c2..290d42808e734cdae8aa4bcd07b1b1b29f6a69ea 100644
--- a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
+++ b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
@@ -61,7 +61,7 @@ namespace Math.Tests
                 Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
             };
             server.Start();
-            channel = new Channel(Host, server.Ports.Single().BoundPort, Credentials.Insecure);
+            channel = new Channel(Host, server.Ports.Single().BoundPort, ChannelCredentials.Insecure);
             client = Math.NewClient(channel);
         }
 
diff --git a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
index 6c3a53bec0559168b54aab151394a855b6470fd1..d90f21c2e1cb30b7a3fe2e01297fb423cfa4a998 100644
--- a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
+++ b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
@@ -63,7 +63,7 @@ namespace Grpc.HealthCheck.Tests
                 Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
             };
             server.Start();
-            channel = new Channel(Host, server.Ports.Single().BoundPort, Credentials.Insecure);
+            channel = new Channel(Host, server.Ports.Single().BoundPort, ChannelCredentials.Insecure);
 
             client = Grpc.Health.V1Alpha.Health.NewClient(channel);
         }
diff --git a/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj b/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
index 2c38c9645c5f7804e73a69fb4576f3eab46a6703..8bc2082a1da0f736e833e9f442800449f2f44b12 100644
--- a/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
@@ -9,6 +9,7 @@
     <AssemblyName>Grpc.IntegrationTesting.Client</AssemblyName>
     <StartupObject>Grpc.IntegrationTesting.Client.Program</StartupObject>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <NuGetPackageImportStamp>6d22e68f</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -38,7 +39,47 @@
     <AssemblyOriginatorKeyFile>C:\keys\Grpc.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="BouncyCastle.Crypto, Version=1.7.4137.9688, Culture=neutral, PublicKeyToken=a4292a325f69b123, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\BouncyCastle.1.7.0\lib\Net40-Client\BouncyCastle.Crypto.dll</HintPath>
+    </Reference>
+    <Reference Include="Google.Apis.Auth, Version=1.9.3.19379, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.3\lib\net40\Google.Apis.Auth.dll</HintPath>
+    </Reference>
+    <Reference Include="Google.Apis.Auth.PlatformServices, Version=1.9.3.19383, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.3\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
+    </Reference>
+    <Reference Include="Google.Apis.Core, Version=1.9.3.19379, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Core.1.9.3\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks.Extensions">
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop, Version=1.0.168.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
+    </Reference>
+    <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
+    <Reference Include="System.Net" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Net.Http.Extensions">
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Extensions.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Net.Http.Primitives">
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Primitives.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Net.Http.WebRequest" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\Grpc.Core\Version.cs">
@@ -60,5 +101,13 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
+    <None Include="packages.config" />
   </ItemGroup>
+  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets'))" />
+  </Target>
 </Project>
\ No newline at end of file
diff --git a/src/csharp/Grpc.IntegrationTesting.Client/packages.config b/src/csharp/Grpc.IntegrationTesting.Client/packages.config
new file mode 100644
index 0000000000000000000000000000000000000000..7a02c95db9138a30a7f1bf2d432e95050e008d91
--- /dev/null
+++ b/src/csharp/Grpc.IntegrationTesting.Client/packages.config
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="BouncyCastle" version="1.7.0" targetFramework="net45" />
+  <package id="Google.Apis.Auth" version="1.9.3" targetFramework="net45" />
+  <package id="Google.Apis.Core" version="1.9.3" targetFramework="net45" />
+  <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
+  <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
+  <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net45" />
+  <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
+</packages>
\ No newline at end of file
diff --git a/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj b/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
index 949ad61375c4c0c15562cc8ab5a358e8c8c99e98..1eadbeb9206fb99dbf8f46df8b62f82e5079908e 100644
--- a/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
@@ -9,6 +9,7 @@
     <AssemblyName>Grpc.IntegrationTesting.Server</AssemblyName>
     <StartupObject>Grpc.IntegrationTesting.Server.Program</StartupObject>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <NuGetPackageImportStamp>d9ee8e52</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -38,7 +39,47 @@
     <AssemblyOriginatorKeyFile>C:\keys\Grpc.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="BouncyCastle.Crypto, Version=1.7.4137.9688, Culture=neutral, PublicKeyToken=a4292a325f69b123, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\BouncyCastle.1.7.0\lib\Net40-Client\BouncyCastle.Crypto.dll</HintPath>
+    </Reference>
+    <Reference Include="Google.Apis.Auth, Version=1.9.3.19379, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.3\lib\net40\Google.Apis.Auth.dll</HintPath>
+    </Reference>
+    <Reference Include="Google.Apis.Auth.PlatformServices, Version=1.9.3.19383, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.3\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
+    </Reference>
+    <Reference Include="Google.Apis.Core, Version=1.9.3.19379, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Core.1.9.3\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks.Extensions">
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop, Version=1.0.168.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
+    </Reference>
+    <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
+    <Reference Include="System.Net" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Net.Http.Extensions">
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Extensions.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Net.Http.Primitives">
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Primitives.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Net.Http.WebRequest" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\Grpc.Core\Version.cs">
@@ -60,5 +101,13 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
+    <None Include="packages.config" />
   </ItemGroup>
+  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets'))" />
+  </Target>
 </Project>
\ No newline at end of file
diff --git a/src/csharp/Grpc.IntegrationTesting.Server/packages.config b/src/csharp/Grpc.IntegrationTesting.Server/packages.config
new file mode 100644
index 0000000000000000000000000000000000000000..7a02c95db9138a30a7f1bf2d432e95050e008d91
--- /dev/null
+++ b/src/csharp/Grpc.IntegrationTesting.Server/packages.config
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="BouncyCastle" version="1.7.0" targetFramework="net45" />
+  <package id="Google.Apis.Auth" version="1.9.3" targetFramework="net45" />
+  <package id="Google.Apis.Core" version="1.9.3" targetFramework="net45" />
+  <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
+  <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
+  <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net45" />
+  <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
+</packages>
\ No newline at end of file
diff --git a/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj b/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
index a0bcf431f7bee447b8428d51bd03be2c1014ee3f..f0a39acf753e7820a9e621f3bbe7c1c3c5af08fb 100644
--- a/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
+++ b/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
@@ -96,6 +96,7 @@
     <Compile Include="Empty.cs" />
     <Compile Include="Messages.cs" />
     <Compile Include="InteropClientServerTest.cs" />
+    <Compile Include="MetadataCredentialsTest.cs" />
     <Compile Include="TestServiceImpl.cs" />
     <Compile Include="InteropServer.cs" />
     <Compile Include="InteropClient.cs" />
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
index 616093d4aebf8503bcf39cf3a4a92d2d57da228f..0ed2910ae0207c0c43d055e2d11998158c206b27 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
@@ -33,11 +33,13 @@
 
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
 
 using CommandLine;
+using CommandLine.Text;
 using Google.Apis.Auth.OAuth2;
 using Google.Protobuf;
 using Grpc.Auth;
@@ -45,8 +47,6 @@ using Grpc.Core;
 using Grpc.Core.Utils;
 using Grpc.Testing;
 using NUnit.Framework;
-using CommandLine.Text;
-using System.IO;
 
 namespace Grpc.IntegrationTesting
 {
@@ -66,11 +66,13 @@ namespace Grpc.IntegrationTesting
             [Option("test_case", DefaultValue = "large_unary")]
             public string TestCase { get; set; }
 
-            [Option("use_tls")]
-            public bool UseTls { get; set; }
+            // Deliberately using nullable bool type to allow --use_tls=true syntax (as opposed to --use_tls)
+            [Option("use_tls", DefaultValue = false)]
+            public bool? UseTls { get; set; }
 
-            [Option("use_test_ca")]
-            public bool UseTestCa { get; set; }
+            // Deliberately using nullable bool type to allow --use_test_ca=true syntax (as opposed to --use_test_ca)
+            [Option("use_test_ca", DefaultValue = false)]
+            public bool? UseTestCa { get; set; }
 
             [Option("default_service_account", Required = false)]
             public string DefaultServiceAccount { get; set; }
@@ -116,7 +118,7 @@ namespace Grpc.IntegrationTesting
 
         private async Task Run()
         {
-            var credentials = options.UseTls ? TestCredentials.CreateTestClientCredentials(options.UseTestCa) : Credentials.Insecure;
+            var credentials = await CreateCredentialsAsync();
             
             List<ChannelOption> channelOptions = null;
             if (!string.IsNullOrEmpty(options.ServerHostOverride))
@@ -126,14 +128,32 @@ namespace Grpc.IntegrationTesting
                     new ChannelOption(ChannelOptions.SslTargetNameOverride, options.ServerHostOverride)
                 };
             }
-            Console.WriteLine(options.ServerHost);
-            Console.WriteLine(options.ServerPort);
             var channel = new Channel(options.ServerHost, options.ServerPort, credentials, channelOptions);
             TestService.TestServiceClient client = new TestService.TestServiceClient(channel);
             await RunTestCaseAsync(client, options);
             await channel.ShutdownAsync();
         }
 
+        private async Task<ChannelCredentials> CreateCredentialsAsync()
+        {
+            var credentials = options.UseTls.Value ? TestCredentials.CreateTestClientCredentials(options.UseTestCa.Value) : ChannelCredentials.Insecure;
+
+            if (options.TestCase == "jwt_token_creds")
+            {
+                var googleCredential = await GoogleCredential.GetApplicationDefaultAsync();
+                Assert.IsTrue(googleCredential.IsCreateScopedRequired);
+                credentials = ChannelCredentials.Create(credentials, googleCredential.ToGrpcCredentials());
+            }
+
+            if (options.TestCase == "compute_engine_creds")
+            {
+                var googleCredential = await GoogleCredential.GetApplicationDefaultAsync();
+                Assert.IsFalse(googleCredential.IsCreateScopedRequired);
+                credentials = ChannelCredentials.Create(credentials, googleCredential.ToGrpcCredentials());
+            }
+            return credentials;
+        }
+
         private async Task RunTestCaseAsync(TestService.TestServiceClient client, ClientOptions options)
         {
             switch (options.TestCase)
@@ -157,10 +177,10 @@ namespace Grpc.IntegrationTesting
                     await RunEmptyStreamAsync(client);
                     break;
                 case "compute_engine_creds":
-                    await RunComputeEngineCredsAsync(client, options.DefaultServiceAccount, options.OAuthScope);
+                    RunComputeEngineCreds(client, options.DefaultServiceAccount, options.OAuthScope);
                     break;
                 case "jwt_token_creds":
-                    await RunJwtTokenCredsAsync(client, options.DefaultServiceAccount);
+                    RunJwtTokenCreds(client, options.DefaultServiceAccount);
                     break;
                 case "oauth2_auth_token":
                     await RunOAuth2AuthTokenAsync(client, options.DefaultServiceAccount, options.OAuthScope);
@@ -320,13 +340,10 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunComputeEngineCredsAsync(TestService.TestServiceClient client, string defaultServiceAccount, string oauthScope)
+        public static void RunComputeEngineCreds(TestService.TestServiceClient client, string defaultServiceAccount, string oauthScope)
         {
             Console.WriteLine("running compute_engine_creds");
-            var credential = await GoogleCredential.GetApplicationDefaultAsync();
-            Assert.IsFalse(credential.IsCreateScopedRequired);
-            client.HeaderInterceptor = AuthInterceptors.FromCredential(credential);
-            
+
             var request = new SimpleRequest
             {
                 ResponseType = PayloadType.COMPRESSABLE,
@@ -336,6 +353,7 @@ namespace Grpc.IntegrationTesting
                 FillOauthScope = true
             };
 
+            // not setting credentials here because they were set on channel already
             var response = client.UnaryCall(request);
 
             Assert.AreEqual(PayloadType.COMPRESSABLE, response.Payload.Type);
@@ -346,13 +364,10 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunJwtTokenCredsAsync(TestService.TestServiceClient client, string defaultServiceAccount)
+        public static void RunJwtTokenCreds(TestService.TestServiceClient client, string defaultServiceAccount)
         {
             Console.WriteLine("running jwt_token_creds");
-            var credential = await GoogleCredential.GetApplicationDefaultAsync();
-            Assert.IsTrue(credential.IsCreateScopedRequired);
-            client.HeaderInterceptor = AuthInterceptors.FromCredential(credential);
-
+           
             var request = new SimpleRequest
             {
                 ResponseType = PayloadType.COMPRESSABLE,
@@ -361,6 +376,7 @@ namespace Grpc.IntegrationTesting
                 FillUsername = true,
             };
 
+            // not setting credentials here because they were set on channel already
             var response = client.UnaryCall(request);
 
             Assert.AreEqual(PayloadType.COMPRESSABLE, response.Payload.Type);
@@ -375,15 +391,14 @@ namespace Grpc.IntegrationTesting
             ITokenAccess credential = (await GoogleCredential.GetApplicationDefaultAsync()).CreateScoped(new[] { oauthScope });
             string oauth2Token = await credential.GetAccessTokenForRequestAsync();
 
-            client.HeaderInterceptor = AuthInterceptors.FromAccessToken(oauth2Token);
-
+            var credentials = GrpcCredentials.FromAccessToken(oauth2Token);
             var request = new SimpleRequest
             {
                 FillUsername = true,
                 FillOauthScope = true
             };
 
-            var response = client.UnaryCall(request);
+            var response = client.UnaryCall(request, new CallOptions(credentials: credentials));
 
             Assert.False(string.IsNullOrEmpty(response.OauthScope));
             Assert.True(oauthScope.Contains(response.OauthScope));
@@ -394,18 +409,15 @@ namespace Grpc.IntegrationTesting
         public static async Task RunPerRpcCredsAsync(TestService.TestServiceClient client, string defaultServiceAccount, string oauthScope)
         {
             Console.WriteLine("running per_rpc_creds");
-            ITokenAccess credential = (await GoogleCredential.GetApplicationDefaultAsync()).CreateScoped(new[] { oauthScope });
-            string accessToken = await credential.GetAccessTokenForRequestAsync();
-            var headerInterceptor = AuthInterceptors.FromAccessToken(accessToken);
+            ITokenAccess googleCredential = (await GoogleCredential.GetApplicationDefaultAsync()).CreateScoped(new[] { oauthScope });
 
+            var credentials = GrpcCredentials.Create(googleCredential);
             var request = new SimpleRequest
             {
                 FillUsername = true,
             };
 
-            var headers = new Metadata();
-            headerInterceptor(null, "", headers);
-            var response = client.UnaryCall(request, headers: headers);
+            var response = client.UnaryCall(request, new CallOptions(credentials: credentials));
 
             Assert.AreEqual(defaultServiceAccount, response.Username);
             Console.WriteLine("Passed!");
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropServer.cs b/src/csharp/Grpc.IntegrationTesting/InteropServer.cs
index 513f8722d64238299548af6fe4ec41605816f58a..29f842be2eceedfcd9b9045d856d1cd1da9d2d42 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropServer.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropServer.cs
@@ -54,8 +54,9 @@ namespace Grpc.IntegrationTesting
             [Option("port", DefaultValue = 8070)]
             public int Port { get; set; }
 
-            [Option("use_tls")]
-            public bool UseTls { get; set; }
+            // Deliberately using nullable bool type to allow --use_tls=true syntax (as opposed to --use_tls)
+            [Option("use_tls", DefaultValue = false)]
+            public bool? UseTls { get; set; }
 
             [HelpOption]
             public string GetUsage()
@@ -99,7 +100,7 @@ namespace Grpc.IntegrationTesting
 
             string host = "0.0.0.0";
             int port = options.Port;
-            if (options.UseTls)
+            if (options.UseTls.Value)
             {
                 server.Ports.Add(host, port, TestCredentials.CreateTestServerCredentials());
             }
diff --git a/src/csharp/Grpc.IntegrationTesting/MetadataCredentialsTest.cs b/src/csharp/Grpc.IntegrationTesting/MetadataCredentialsTest.cs
new file mode 100644
index 0000000000000000000000000000000000000000..5325b2fa148a66cee882e8398909f404af1fe00f
--- /dev/null
+++ b/src/csharp/Grpc.IntegrationTesting/MetadataCredentialsTest.cs
@@ -0,0 +1,97 @@
+#region Copyright notice and license
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Grpc.Core;
+using Grpc.Core.Utils;
+using Grpc.Testing;
+using NUnit.Framework;
+
+namespace Grpc.IntegrationTesting
+{
+    public class MetadataCredentialsTest
+    {
+        const string Host = "localhost";
+        Server server;
+        Channel channel;
+        TestService.ITestServiceClient client;
+
+        [TestFixtureSetUp]
+        public void Init()
+        {
+            var serverCredentials = new SslServerCredentials(new[] { new KeyCertificatePair(File.ReadAllText(TestCredentials.ServerCertChainPath), File.ReadAllText(TestCredentials.ServerPrivateKeyPath)) });
+            server = new Server
+            {
+                Services = { TestService.BindService(new TestServiceImpl()) },
+                Ports = { { Host, ServerPort.PickUnused, serverCredentials } }
+            };
+            server.Start();
+
+            var options = new List<ChannelOption>
+            {
+                new ChannelOption(ChannelOptions.SslTargetNameOverride, TestCredentials.DefaultHostOverride)
+            };
+
+            var asyncAuthInterceptor = new AsyncAuthInterceptor(async (authUri, metadata) =>
+            {
+                await Task.Delay(100);  // make sure the operation is asynchronous.
+                metadata.Add("authorization", "SECRET_TOKEN");
+            });
+
+            var clientCredentials = ChannelCredentials.Create(
+                new SslCredentials(File.ReadAllText(TestCredentials.ClientCertAuthorityPath)),
+                new MetadataCredentials(asyncAuthInterceptor));
+            channel = new Channel(Host, server.Ports.Single().BoundPort, clientCredentials, options);
+            client = TestService.NewClient(channel);
+        }
+
+        [TestFixtureTearDown]
+        public void Cleanup()
+        {
+            channel.ShutdownAsync().Wait();
+            server.ShutdownAsync().Wait();
+        }
+
+        [Test]
+        public void MetadataCredentials()
+        {
+            var response = client.UnaryCall(new SimpleRequest { ResponseSize = 10 });
+            Assert.AreEqual(10, response.Payload.Body.Length);
+        }
+    }
+}
diff --git a/src/csharp/README.md b/src/csharp/README.md
index 3fbc1c5f0527cdf5b386f3ef738455a352ca4b3a..b215d5aa07ab8d44fa9bee7a4fe76d3faa976929 100644
--- a/src/csharp/README.md
+++ b/src/csharp/README.md
@@ -6,65 +6,73 @@ A C# implementation of gRPC.
 Status
 ------
 
-Alpha : Ready for early adopters.
+Beta
 
-Usage: Windows
+PREREQUISITES
 --------------
 
-- Prerequisites: .NET Framework 4.5+, Visual Studio 2013 with NuGet extension installed (VS2015 should work).
+- Windows: .NET Framework 4.5+, Visual Studio 2013 or 2015.
+- Linux: Mono 3.2.8+, MonoDevelop 5.9 with NuGet add-in installed.
+- Mac OS X: [homebrew][], Xamarin Studio with NuGet add-in installed.
+
+HOW TO USE
+--------------
+
+**Windows**
 
 - Open Visual Studio and start a new project/solution.
 
 - Add NuGet package `Grpc` as a dependency (Project options -> Manage NuGet Packages).
   That will also pull all the transitive dependencies (including the native libraries that
-  gRPC C# is internally using).
-
-- Helloworld project example can be found in https://github.com/grpc/grpc/tree/master/examples/csharp.
+  gRPC C# is using internally).
 
-Usage: Linux (Mono)
---------------
-
-- Prerequisites: Mono 3.2.8+, MonoDevelop 5.9 with NuGet add-in installed.
+**Linux (Debian)**
 
-- Install Linuxbrew and gRPC C Core using instructions in https://github.com/grpc/homebrew-grpc
+- Add [Debian jessie-backports][] to your `sources.list` file. Example:
 
-- gRPC C# depends on native shared library libgrpc_csharp_ext.so (Unix flavor of grpc_csharp_ext.dll).
-  This library will be installed to `~/.linuxbrew/lib` by the previous step.
-  To make it visible to mono, you need to:
+  ```sh
+  echo "deb http://http.debian.net/debian jessie-backports main" | \
+  sudo tee -a /etc/apt/sources.list
+  ```
 
-  - (preferred approach) add `libgrpc_csharp_ext.so` to `/etc/ld.so.cache` by running:
+- Install the gRPC Debian package
 
-    ```sh
-    $ echo "$HOME/.linuxbrew/lib" | sudo tee /etc/ld.so.conf.d/zzz_brew_lib.conf
-    $ sudo ldconfig
-    ```
+  ```sh
+  sudo apt-get update
+  sudo apt-get install libgrpc0
+  ```
 
-  - (adhoc approach) set `LD_LIBRARY_PATH` environment variable to point to directory containing `libgrpc_csharp_ext.so`:
+- gRPC C# depends on native shared library `libgrpc_csharp_ext.so` (Unix flavor of grpc_csharp_ext.dll).
+  This library is not part of the base gRPC debian package and needs to be installed manually from
+  a `.deb` file. Download the debian package `libgrpc_csharp_ext` from corresponding gRPC release on GitHub
+  and install it using `dpkg`.
 
-    ```sh
-    $ export LD_LIBRARY_PATH=$HOME/.linuxbrew/lib:${LD_LIBRARY_PATH}
-    ```
-  - (if you are contributor) installing gRPC from sources using `sudo make install_grpc_csharp_ext` also works.
+  ```sh
+  # choose version corresponding to the version of libgrpc you've installed.
+  wget https://github.com/grpc/grpc/releases/download/release-0_11_0/libgrpc-csharp-ext0_0.11.0.0-1_amd64.deb
+  dpkg -i libgrpc-csharp-ext0_0.11.0.0-1_amd64.deb
+  ```
 
 - Open MonoDevelop and start a new project/solution.
 
 - Add NuGet package `Grpc` as a dependency (Project -> Add NuGet packages).
 
-- Helloworld project example can be found in https://github.com/grpc/grpc/tree/master/examples/csharp.
-
-Usage: MacOS (Mono)
---------------
+**Mac OS X**
 
 - WARNING: As of now gRPC C# only works on 64bit version of Mono (because we don't compile
   the native extension for C# in 32bit mode yet). That means your development experience
   with Xamarin Studio on MacOS will not be great, as you won't be able to run your
   code directly from Xamarin Studio (which requires 32bit version of Mono).
 
-- Prerequisites: Xamarin Studio with NuGet add-in installed.
+- Install [homebrew][]. Run the following command to install gRPC C# native dependencies.
 
-- Install Homebrew and gRPC C Core using instructions in https://github.com/grpc/homebrew-grpc
+  ```sh
+  $ curl -fsSL https://goo.gl/getgrpc | bash -
+  ```
+  This will download and run the [gRPC install script][], then install the latest version of gRPC C core and native C# extension.
+  It also installs Protocol Buffers compiler (_protoc_) and the gRPC _protoc_ plugin for ruby.
 
-- Install 64-bit version of mono with command `brew install mono` (assumes you've already installed Homebrew).
+- Install 64-bit version of mono with command `brew install mono`.
 
 - Open Xamarin Studio and start a new project/solution.
 
@@ -73,35 +81,27 @@ Usage: MacOS (Mono)
 - *You will be able to build your project in Xamarin Studio, but to run or test it,
   you will need to run it under 64-bit version of Mono.*
 
-- Helloworld project example can be found in https://github.com/grpc/grpc/tree/master/examples/csharp.
-
-Building: Windows
+BUILD FROM SOURCE
 -----------------
 
 You only need to go through these steps if you are planning to develop gRPC C#.
 If you are a user of gRPC C#, go to Usage section above.
 
-- Prerequisites for development: NET Framework 4.5+, Visual Studio 2013 (with NuGet and NUnit extensions installed).
+**Windows**
 
-- The grpc_csharp_ext native library needs to be built so you can build the Grpc C# solution. You can 
+- The grpc_csharp_ext native library needs to be built so you can build the gRPC C# solution. You can 
   either build the native solution in `vsprojects/grpc.sln` from Visual Studio manually, or you can use
   a convenience batch script that builds everything for you.
 
   ```
+  > REM From src/csharp directory
   > buildall.bat
   ```
 
-- Open Grpc.sln using Visual Studio 2013. NuGet dependencies will be restored
+- Open Grpc.sln using Visual Studio. NuGet dependencies will be restored
   upon build (you need to have NuGet add-in installed).
 
-
-Building: Linux (Mono)
-----------------------
-
-You only need to go through these steps if you are planning to develop gRPC C#.
-If you are a user of gRPC C#, go to Usage section above.
-
-- Prerequisites for development: Mono 3.2.8+, MonoDevelop 5.9 with NuGet and NUnit add-ins installed.
+**Linux**
 
   ```sh
   $ sudo apt-get install mono-devel
@@ -123,8 +123,8 @@ don't support NuGet add-in.
 
 - Build the solution & run all the tests from test view.
 
-Tests
------
+RUNNING TESTS
+-------------
 
 gRPC C# is using NUnit as the testing framework.
 
@@ -136,12 +136,25 @@ Then you should be able to run all the test from the Test View.
 
 After building the solution, you can also run the tests from command line 
 using nunit-console tool.
+
 ```sh
 # from Grpc.Core.Test/bin/Debug directory
 $ nunit-console Grpc.Core.Tests.dll
 ```
 
-Contents
+gRPC team uses a Python script to simplify facilitate running tests for
+different languages.
+
+```
+tools/run_tests/run_tests.py -l csharp
+```
+
+DOCUMENTATION
+-------------
+- the gRPC C# reference documentation is available online at [grpc.io][]
+- [Helloworld example][]
+
+CONTENTS
 --------
 
 - ext:
@@ -159,7 +172,7 @@ Contents
 - Grpc.IntegrationTesting:
   Cross-language gRPC implementation testing (interop testing).
 
-Troubleshooting
+TROUBLESHOOTING
 ---------------
 
 ### Problem: Unable to load DLL 'grpc_csharp_ext.dll'
@@ -170,8 +183,17 @@ Internally, gRPC C# uses a native library written in C (gRPC C core) and invokes
 
 - If you are running your application that is using gRPC on Windows machine that doesn't have Visual Studio installed, you might need to install [Visual C++ 2013 redistributable](https://www.microsoft.com/en-us/download/details.aspx?id=40784) that contains some system .dll libraries that `grpc_csharp_ext.dll` depends on (see #905 for more details).
 
-- On Linux (or Docker), you need to first install gRPC C core and `libgrpc_csharp_ext.so` shared libraries. Currently, the libraries can be installed by `make install_grpc_csharp_ext` or using Linuxbrew (a Debian package is coming soon). Installation on a machine where your application is going to be deployed is no different. 
+- On Linux (or Docker), you need to first install gRPC C core and `libgrpc_csharp_ext.so` shared libraries.
+  See [How to Use](#how-to-use) section for details how to install it.
+  Installation on a machine where your application is going to be deployed is no different.
 
-- On Mac, you need to first install gRPC C core and `libgrpc_csharp_ext.dylib` shared libraries using Homebrew. See above for installation instruction. Installation on a machine where your application is going to be deployed is no different. 
+- On Mac, you need to first install gRPC C core and `libgrpc_csharp_ext.dylib` shared libraries using Homebrew. See above for installation instruction.
+  Installation on a machine where your application is going to be deployed is no different.
 
 - Possible cause for the problem is that the `grpc_csharp_ext` library is installed, but it has different bitness (32/64bit) than your C# runtime (in case you are using mono) or C# application.
+
+[homebrew]:http://brew.sh
+[gRPC install script]:https://raw.githubusercontent.com/grpc/homebrew-grpc/master/scripts/install
+[grpc.io]: http://www.grpc.io/docs/installation/csharp.html
+[Debian jessie-backports]:http://backports.debian.org/Instructions/
+[Helloworld example]:../../examples/csharp/helloworld
\ No newline at end of file
diff --git a/src/csharp/ext/grpc_csharp_ext.c b/src/csharp/ext/grpc_csharp_ext.c
index 51e0728fb9dd17b7a7c6b88ecb7ed27a2836a620..679ca43d74913c570a1b1c58988aae75af092b04 100644
--- a/src/csharp/ext/grpc_csharp_ext.c
+++ b/src/csharp/ext/grpc_csharp_ext.c
@@ -68,7 +68,7 @@ grpc_byte_buffer *string_to_byte_buffer(const char *buffer, size_t len) {
 /*
  * Helper to maintain lifetime of batch op inputs and store batch op outputs.
  */
-typedef struct gprcsharp_batch_context {
+typedef struct grpcsharp_batch_context {
   grpc_metadata_array send_initial_metadata;
   grpc_byte_buffer *send_message;
   struct {
@@ -665,16 +665,16 @@ grpcsharp_call_start_duplex_streaming(grpc_call *call,
 }
 
 GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_recv_initial_metadata(
-	grpc_call *call, grpcsharp_batch_context *ctx) {
-	/* TODO: don't use magic number */
-	grpc_op ops[1];
-	ops[0].op = GRPC_OP_RECV_INITIAL_METADATA;
-	ops[0].data.recv_initial_metadata = &(ctx->recv_initial_metadata);
-	ops[0].flags = 0;
-	ops[0].reserved = NULL;
+  grpc_call *call, grpcsharp_batch_context *ctx) {
+  /* TODO: don't use magic number */
+  grpc_op ops[1];
+  ops[0].op = GRPC_OP_RECV_INITIAL_METADATA;
+  ops[0].data.recv_initial_metadata = &(ctx->recv_initial_metadata);
+  ops[0].flags = 0;
+  ops[0].reserved = NULL;
 
-	return grpc_call_start_batch(call, ops, sizeof(ops) / sizeof(ops[0]), ctx,
-		NULL);
+  return grpc_call_start_batch(call, ops, sizeof(ops) / sizeof(ops[0]), ctx,
+    NULL);
 }
 
 GPR_EXPORT grpc_call_error GPR_CALLTYPE
@@ -785,6 +785,11 @@ grpcsharp_call_send_initial_metadata(grpc_call *call,
                                NULL);
 }
 
+GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_set_credentials(grpc_call *call,
+                                                            grpc_credentials *creds) {
+	return grpc_call_set_credentials(call, creds);
+}
+
 /* Server */
 
 GPR_EXPORT grpc_server *GPR_CALLTYPE
@@ -892,6 +897,47 @@ grpcsharp_server_add_secure_http2_port(grpc_server *server, const char *addr,
   return grpc_server_add_secure_http2_port(server, addr, creds);
 }
 
+GPR_EXPORT grpc_credentials *GPR_CALLTYPE grpcsharp_composite_credentials_create(
+  grpc_credentials *creds1,
+  grpc_credentials *creds2) {
+  return grpc_composite_credentials_create(creds1, creds2, NULL);
+}
+
+/* Metadata credentials plugin */
+
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_metadata_credentials_notify_from_plugin(
+    grpc_credentials_plugin_metadata_cb cb,
+    void *user_data, grpc_metadata_array *metadata,
+  grpc_status_code status, const char *error_details) {
+  cb(user_data, metadata->metadata, metadata->count, status, error_details);
+}
+
+typedef void(GPR_CALLTYPE *grpcsharp_metadata_interceptor_func)(
+  void *state, const char *service_url, grpc_credentials_plugin_metadata_cb cb,
+  void *user_data, gpr_int32 is_destroy);
+
+static void grpcsharp_get_metadata_handler(void *state, const char *service_url,
+  grpc_credentials_plugin_metadata_cb cb, void *user_data) {
+  grpcsharp_metadata_interceptor_func interceptor =
+      (grpcsharp_metadata_interceptor_func)(gpr_intptr)state;
+  interceptor(state, service_url, cb, user_data, 0);
+}
+
+static void grpcsharp_metadata_credentials_destroy_handler(void *state) {
+  grpcsharp_metadata_interceptor_func interceptor =
+      (grpcsharp_metadata_interceptor_func)(gpr_intptr)state;
+  interceptor(state, NULL, NULL, NULL, 1);
+}
+
+GPR_EXPORT grpc_credentials *GPR_CALLTYPE grpcsharp_metadata_credentials_create_from_plugin(
+  grpcsharp_metadata_interceptor_func metadata_interceptor) {
+  grpc_metadata_credentials_plugin plugin;
+  plugin.get_metadata = grpcsharp_get_metadata_handler;
+  plugin.destroy = grpcsharp_metadata_credentials_destroy_handler;
+  plugin.state = (void*)(gpr_intptr)metadata_interceptor;
+  return grpc_metadata_credentials_create_from_plugin(plugin, NULL);
+}
+
 /* Logging */
 
 typedef void(GPR_CALLTYPE *grpcsharp_log_func)(const char *file, gpr_int32 line,
diff --git a/src/node/LICENSE b/src/node/LICENSE
deleted file mode 100644
index 0209b570e10da54c158654433c5d3212b548c352..0000000000000000000000000000000000000000
--- a/src/node/LICENSE
+++ /dev/null
@@ -1,28 +0,0 @@
-Copyright 2015, Google Inc.
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-    * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-    * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/src/node/README.md b/src/node/README.md
index 7719d082900c2122b8d9e684b05ba42f19e0b0fc..5d89e2228db79f1da5c8e38c665916a344030c53 100644
--- a/src/node/README.md
+++ b/src/node/README.md
@@ -5,51 +5,19 @@ Beta
 
 ## PREREQUISITES
 - `node`: This requires `node` to be installed. If you instead have the `nodejs` executable on Debian, you should install the [`nodejs-legacy`](https://packages.debian.org/sid/nodejs-legacy) package.
-- [homebrew][] on Mac OS X.  These simplify the installation of the gRPC C core.
 
 ## INSTALLATION
 
-**Linux (Debian):**
-
-Add [Debian jessie-backports][] to your `sources.list` file. Example:
-
-```sh
-echo "deb http://http.debian.net/debian jessie-backports main" | \
-sudo tee -a /etc/apt/sources.list
-```
-
-Install the gRPC Debian package
-
-```sh
-sudo apt-get update
-sudo apt-get install libgrpc-dev
-```
-
 Install the gRPC NPM package
 
 ```sh
 npm install grpc
 ```
 
-**Mac OS X**
-
-Install [homebrew][]. Run the following command to install gRPC Node.js.
-```sh
-$ curl -fsSL https://goo.gl/getgrpc | bash -s nodejs
-```
-This will download and run the [gRPC install script][], then install the latest version of gRPC Nodejs npm package.
-
 ## BUILD FROM SOURCE
  1. Clone [the grpc Git Repository](https://github.com/grpc/grpc).
- 2. Follow the instructions in the `INSTALL` file in the root of that repository to install the C core library that this package depends on.
  3. Run `npm install`.
 
-If you install the gRPC C core library in a custom location, then you need to set some environment variables to install this library. The command will look like this:
-
-```sh
-CXXFLAGS=-I<custom location>/include LDFLAGS=-L<custom location>/lib npm install [grpc]
-```
-
 ## TESTING
 To run the test suite, simply run `npm test` in the install location.
 
@@ -110,7 +78,3 @@ ServerCredentials
 ```
 
 An object with factory methods for creating credential objects for servers.
-
-[homebrew]:http://brew.sh
-[gRPC install script]:https://raw.githubusercontent.com/grpc/homebrew-grpc/master/scripts/install
-[Debian jessie-backports]:http://backports.debian.org/Instructions/
diff --git a/src/node/bin/README.md b/src/node/bin/README.md
deleted file mode 100644
index 2f856e428ef7b8ad9723e503f09685a8a4ec77e8..0000000000000000000000000000000000000000
--- a/src/node/bin/README.md
+++ /dev/null
@@ -1,16 +0,0 @@
-# Command Line Tools
-
-# Service Packager
-
-The command line tool `bin/service_packager`, when called with the following command line:
-
-```bash
-service_packager proto_file -o output_path -n name -v version [-i input_path...]
-```
-
-Populates `output_path` with a node package consisting of a `package.json` populated with `name` and `version`, an `index.js`, a `LICENSE` file copied from gRPC, and a `service.json`, which is compiled from `proto_file` and the given `input_path`s. `require('output_path')` returns an object that is equivalent to
-
-```js
-{ client: require('grpc').load('service.json'),
-  auth: require('google-auth-library') }
-```
diff --git a/src/node/bin/service_packager b/src/node/bin/service_packager
deleted file mode 100755
index c7f24609977eee53c6ccda137b057ddb1aadbc60..0000000000000000000000000000000000000000
--- a/src/node/bin/service_packager
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/usr/bin/env node
-require(__dirname+'/../cli/service_packager.js').main(process.argv.slice(2));
\ No newline at end of file
diff --git a/src/node/binding.gyp b/src/node/binding.gyp
deleted file mode 100644
index a64403093243c4630d028ea9c1d85388df1b31bc..0000000000000000000000000000000000000000
--- a/src/node/binding.gyp
+++ /dev/null
@@ -1,85 +0,0 @@
-{
-  "targets" : [
-    {
-      'include_dirs': [
-        "<!(node -e \"require('nan')\")"
-      ],
-      'cflags': [
-        '-std=c++0x',
-        '-Wall',
-        '-pthread',
-        '-g',
-        '-zdefs',
-        '-Werror',
-        '-Wno-error=deprecated-declarations'
-      ],
-      'ldflags': [
-        '-g'
-      ],
-      "conditions": [
-        ['OS != "win"', {
-          'variables': {
-            'pkg_config_grpc': '<!(pkg-config --exists grpc >/dev/null 2>&1 && echo true || echo false)'
-          },
-          'conditions': [
-            ['pkg_config_grpc == "true"', {
-              'link_settings': {
-                'libraries': [
-                  '<!@(pkg-config --libs-only-l --static grpc)'
-                ]
-              },
-              'cflags': [
-                '<!@(pkg-config --cflags grpc)'
-              ],
-              'libraries': [
-                '<!@(pkg-config --libs-only-L --static grpc)'
-              ],
-              'ldflags': [
-                '<!@(pkg-config --libs-only-other --static grpc)'
-              ]
-              }, {
-                'link_settings': {
-                  'libraries': [
-                    '-lpthread',
-                    '-lgrpc',
-                    '-lgpr'
-                  ],
-                },
-                'conditions':[
-                  ['OS != "mac"', {
-                    'link_settings': {
-                      'libraries': [
-                        '-lrt'
-                      ]
-                    }
-                  }]
-                ]
-              }
-           ]
-          ]
-        }],
-        ['OS == "mac"', {
-          'xcode_settings': {
-            'MACOSX_DEPLOYMENT_TARGET': '10.9',
-            'OTHER_CFLAGS': [
-              '-std=c++11',
-              '-stdlib=libc++'
-            ]
-          }
-        }]
-      ],
-      "target_name": "grpc",
-      "sources": [
-        "ext/byte_buffer.cc",
-        "ext/call.cc",
-        "ext/channel.cc",
-        "ext/completion_queue_async_worker.cc",
-        "ext/credentials.cc",
-        "ext/node_grpc.cc",
-        "ext/server.cc",
-        "ext/server_credentials.cc",
-        "ext/timeval.cc"
-      ]
-    }
-  ]
-}
diff --git a/src/node/cli/service_packager.js b/src/node/cli/service_packager.js
deleted file mode 100644
index c92c450a01e51921c550554bf5b972e73eb29b8c..0000000000000000000000000000000000000000
--- a/src/node/cli/service_packager.js
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- *
- * Copyright 2015, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-'use strict';
-
-var fs = require('fs');
-var path = require('path');
-
-var _ = require('lodash');
-var async = require('async');
-var pbjs = require('protobufjs/cli/pbjs');
-var parseArgs = require('minimist');
-var Mustache = require('mustache');
-
-var package_json = require('../package.json');
-
-var template_path = path.resolve(__dirname, 'service_packager');
-
-var package_tpl_path = path.join(template_path, 'package.json.template');
-
-var arg_format = {
-  string: ['include', 'out', 'name', 'version'],
-  alias: {
-    include: 'i',
-    out: 'o',
-    name: 'n',
-    version: 'v'
-  }
-};
-
-// TODO(mlumish): autogenerate README.md from proto file
-
-/**
- * Render package.json file from template using provided parameters.
- * @param {Object} params Map of parameter names to values
- * @param {function(Error, string)} callback Callback to pass rendered template
- *     text to
- */
-function generatePackage(params, callback) {
-  fs.readFile(package_tpl_path, {encoding: 'utf-8'}, function(err, template) {
-    if (err) {
-      callback(err);
-    } else {
-      var rendered = Mustache.render(template, params);
-      callback(null, rendered);
-    }
-  });
-}
-
-/**
- * Copy a file
- * @param {string} src_path The filepath to copy from
- * @param {string} dest_path The filepath to copy to
- */
-function copyFile(src_path, dest_path) {
-  fs.createReadStream(src_path).pipe(fs.createWriteStream(dest_path));
-}
-
-/**
- * Run the script. Copies the index.js and LICENSE files to the output path,
- * renders the package.json template to the output path, and generates a
- * service.json file from the input proto files using pbjs. The arguments are
- * taken directly from the command line, and handled as follows:
- * -i (--include) : An include path for pbjs (can be dpulicated)
- * -o (--output): The output path
- * -n (--name): The name of the package
- * -v (--version): The package version
- * @param {Array} argv The argument vector
- */
-function main(argv) {
-  var args = parseArgs(argv, arg_format);
-  var out_path = path.resolve(args.out);
-  var include_dirs = [];
-  if (args.include) {
-    include_dirs = _.map(_.flatten([args.include]), function(p) {
-      return path.resolve(p);
-    });
-  }
-  args.grpc_version = package_json.version;
-  generatePackage(args, function(err, rendered) {
-    if (err) throw err;
-    fs.writeFile(path.join(out_path, 'package.json'), rendered, function(err) {
-      if (err) throw err;
-    });
-  });
-  copyFile(path.join(template_path, 'index.js'),
-           path.join(out_path, 'index.js'));
-  copyFile(path.join(__dirname, '..', 'LICENSE'),
-           path.join(out_path, 'LICENSE'));
-
-  var service_stream = fs.createWriteStream(path.join(out_path,
-                                                      'service.json'));
-  var pbjs_args = _.flatten(['node', 'pbjs',
-                             args._[0],
-                             '-legacy',
-                             _.map(include_dirs, function(dir) {
-                               return "-path=" + dir;
-                             })]);
-  var old_stdout = process.stdout;
-  process.__defineGetter__('stdout', function() {
-    return service_stream;
-  });
-  var pbjs_status = pbjs.main(pbjs_args);
-  process.__defineGetter__('stdout', function() {
-    return old_stdout;
-  });
-  if (pbjs_status !== pbjs.STATUS_OK) {
-    throw new Error('pbjs failed with status code ' + pbjs_status);
-  }
-}
-
-exports.main = main;
diff --git a/src/node/cli/service_packager/index.js b/src/node/cli/service_packager/index.js
deleted file mode 100644
index 811e08b89ac5eea2f754a77fb3ced883ddef45ee..0000000000000000000000000000000000000000
--- a/src/node/cli/service_packager/index.js
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- *
- * Copyright 2015, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-var grpc = require('grpc');
-exports.client = grpc.load(__dirname + '/service.json', 'json');
-exports.auth = require('google-auth-library');
diff --git a/src/node/cli/service_packager/package.json.template b/src/node/cli/service_packager/package.json.template
deleted file mode 100644
index 9f9019172e0d1c3a471c6d4fe0743eed399c471d..0000000000000000000000000000000000000000
--- a/src/node/cli/service_packager/package.json.template
+++ /dev/null
@@ -1,17 +0,0 @@
-{
-  "name": "{{{name}}}",
-  "version": "{{{version}}}",
-  "author": "Google Inc.",
-  "description": "Client library for {{{name}}} built on gRPC",
-  "license": "Apache-2.0",
-  "dependencies": {
-    "grpc": "{{{grpc_version}}}",
-    "google-auth-library": "^0.9.2"
-  },
-  "main": "index.js",
-  "files": [
-    "LICENSE",
-    "index.js",
-    "service.json"
-  ]
-}
diff --git a/src/node/ext/call.cc b/src/node/ext/call.cc
index b08a9f96d8120624b6f9df4197f99a58420af045..b63e294f9a332ee46a0ca0fad2d15a8fa6950de9 100644
--- a/src/node/ext/call.cc
+++ b/src/node/ext/call.cc
@@ -39,12 +39,14 @@
 
 #include "grpc/support/log.h"
 #include "grpc/grpc.h"
+#include "grpc/grpc_security.h"
 #include "grpc/support/alloc.h"
 #include "grpc/support/time.h"
 #include "byte_buffer.h"
 #include "call.h"
 #include "channel.h"
 #include "completion_queue_async_worker.h"
+#include "call_credentials.h"
 #include "timeval.h"
 
 using std::unique_ptr;
@@ -168,8 +170,9 @@ Local<Value> ParseMetadata(const grpc_metadata_array *metadata_array) {
     }
     if (EndsWith(elem->key, "-bin")) {
       Nan::Set(array, index_map[elem->key],
-               Nan::CopyBuffer(elem->value,
-                               elem->value_length).ToLocalChecked());
+               MakeFastBuffer(
+                   Nan::CopyBuffer(elem->value,
+                                   elem->value_length).ToLocalChecked()));
     } else {
       Nan::Set(array, index_map[elem->key],
                Nan::New(elem->value).ToLocalChecked());
@@ -501,6 +504,7 @@ void Call::Init(Local<Object> exports) {
   Nan::SetPrototypeMethod(tpl, "cancel", Cancel);
   Nan::SetPrototypeMethod(tpl, "cancelWithStatus", CancelWithStatus);
   Nan::SetPrototypeMethod(tpl, "getPeer", GetPeer);
+  Nan::SetPrototypeMethod(tpl, "setCredentials", SetCredentials);
   fun_tpl.Reset(tpl);
   Local<Function> ctr = Nan::GetFunction(tpl).ToLocalChecked();
   Nan::Set(exports, Nan::New("Call").ToLocalChecked(), ctr);
@@ -724,5 +728,26 @@ NAN_METHOD(Call::GetPeer) {
   info.GetReturnValue().Set(peer_value);
 }
 
+NAN_METHOD(Call::SetCredentials) {
+  Nan::HandleScope scope;
+  if (!HasInstance(info.This())) {
+    return Nan::ThrowTypeError(
+        "setCredentials can only be called on Call objects");
+  }
+  if (!CallCredentials::HasInstance(info[0])) {
+    return Nan::ThrowTypeError(
+        "setCredentials' first argument must be a CallCredentials");
+  }
+  Call *call = ObjectWrap::Unwrap<Call>(info.This());
+  CallCredentials *creds_object = ObjectWrap::Unwrap<CallCredentials>(
+      Nan::To<Object>(info[0]).ToLocalChecked());
+  grpc_credentials *creds = creds_object->GetWrappedCredentials();
+  grpc_call_error error = GRPC_CALL_ERROR;
+  if (creds) {
+    error = grpc_call_set_credentials(call->wrapped_call, creds);
+  }
+  info.GetReturnValue().Set(Nan::New<Uint32>(error));
+}
+
 }  // namespace node
 }  // namespace grpc
diff --git a/src/node/ext/call.h b/src/node/ext/call.h
index 2f8e1f17aae95e0cf124c482aace6ff275445a9c..dd6c38e4f8e96e750697f1b312b1d95f60a60ad5 100644
--- a/src/node/ext/call.h
+++ b/src/node/ext/call.h
@@ -73,6 +73,10 @@ struct Resources {
   std::vector<unique_ptr<PersistentValue> > handles;
 };
 
+bool CreateMetadataArray(v8::Local<v8::Object> metadata,
+                         grpc_metadata_array *array,
+                         shared_ptr<Resources> resources);
+
 class Op {
  public:
   virtual v8::Local<v8::Value> GetNodeValue() const = 0;
@@ -122,6 +126,7 @@ class Call : public Nan::ObjectWrap {
   static NAN_METHOD(Cancel);
   static NAN_METHOD(CancelWithStatus);
   static NAN_METHOD(GetPeer);
+  static NAN_METHOD(SetCredentials);
   static Nan::Callback *constructor;
   // Used for typechecking instances of this javascript class
   static Nan::Persistent<v8::FunctionTemplate> fun_tpl;
diff --git a/src/node/ext/call_credentials.cc b/src/node/ext/call_credentials.cc
new file mode 100644
index 0000000000000000000000000000000000000000..839bb567e48e3a8be3b5557a30f45c4624e6ab8c
--- /dev/null
+++ b/src/node/ext/call_credentials.cc
@@ -0,0 +1,259 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <node.h>
+
+#include "grpc/grpc.h"
+#include "grpc/grpc_security.h"
+#include "grpc/support/log.h"
+#include "call_credentials.h"
+#include "call.h"
+
+namespace grpc {
+namespace node {
+
+using Nan::Callback;
+using Nan::EscapableHandleScope;
+using Nan::HandleScope;
+using Nan::Maybe;
+using Nan::MaybeLocal;
+using Nan::ObjectWrap;
+using Nan::Persistent;
+using Nan::Utf8String;
+
+using v8::Exception;
+using v8::External;
+using v8::Function;
+using v8::FunctionTemplate;
+using v8::Integer;
+using v8::Local;
+using v8::Object;
+using v8::ObjectTemplate;
+using v8::Value;
+
+Nan::Callback *CallCredentials::constructor;
+Persistent<FunctionTemplate> CallCredentials::fun_tpl;
+
+CallCredentials::CallCredentials(grpc_credentials *credentials)
+    : wrapped_credentials(credentials) {}
+
+CallCredentials::~CallCredentials() {
+  grpc_credentials_release(wrapped_credentials);
+}
+
+void CallCredentials::Init(Local<Object> exports) {
+  HandleScope scope;
+  Local<FunctionTemplate> tpl = Nan::New<FunctionTemplate>(New);
+  tpl->SetClassName(Nan::New("CallCredentials").ToLocalChecked());
+  tpl->InstanceTemplate()->SetInternalFieldCount(1);
+  Nan::SetPrototypeMethod(tpl, "compose", Compose);
+  fun_tpl.Reset(tpl);
+  Local<Function> ctr = Nan::GetFunction(tpl).ToLocalChecked();
+  Nan::Set(ctr, Nan::New("createFromPlugin").ToLocalChecked(),
+           Nan::GetFunction(
+               Nan::New<FunctionTemplate>(CreateFromPlugin)).ToLocalChecked());
+  Nan::Set(exports, Nan::New("CallCredentials").ToLocalChecked(), ctr);
+  constructor = new Nan::Callback(ctr);
+}
+
+bool CallCredentials::HasInstance(Local<Value> val) {
+  HandleScope scope;
+  return Nan::New(fun_tpl)->HasInstance(val);
+}
+
+Local<Value> CallCredentials::WrapStruct(grpc_credentials *credentials) {
+  EscapableHandleScope scope;
+  const int argc = 1;
+  if (credentials == NULL) {
+    return scope.Escape(Nan::Null());
+  }
+  Local<Value> argv[argc] = {
+    Nan::New<External>(reinterpret_cast<void *>(credentials))};
+  MaybeLocal<Object> maybe_instance = Nan::NewInstance(
+      constructor->GetFunction(), argc, argv);
+  if (maybe_instance.IsEmpty()) {
+    return scope.Escape(Nan::Null());
+  } else {
+    return scope.Escape(maybe_instance.ToLocalChecked());
+  }
+}
+
+grpc_credentials *CallCredentials::GetWrappedCredentials() {
+  return wrapped_credentials;
+}
+
+NAN_METHOD(CallCredentials::New) {
+  if (info.IsConstructCall()) {
+    if (!info[0]->IsExternal()) {
+      return Nan::ThrowTypeError(
+          "CallCredentials can only be created with the provided functions");
+    }
+    Local<External> ext = info[0].As<External>();
+    grpc_credentials *creds_value =
+        reinterpret_cast<grpc_credentials *>(ext->Value());
+    CallCredentials *credentials = new CallCredentials(creds_value);
+    credentials->Wrap(info.This());
+    info.GetReturnValue().Set(info.This());
+    return;
+  } else {
+    const int argc = 1;
+    Local<Value> argv[argc] = {info[0]};
+    MaybeLocal<Object> maybe_instance = constructor->GetFunction()->NewInstance(
+        argc, argv);
+    if (maybe_instance.IsEmpty()) {
+      // There's probably a pending exception
+      return;
+    } else {
+      info.GetReturnValue().Set(maybe_instance.ToLocalChecked());
+    }
+  }
+}
+
+NAN_METHOD(CallCredentials::Compose) {
+  if (!CallCredentials::HasInstance(info.This())) {
+    return Nan::ThrowTypeError(
+        "compose can only be called on CallCredentials objects");
+  }
+  if (!CallCredentials::HasInstance(info[0])) {
+    return Nan::ThrowTypeError(
+        "compose's first argument must be a CallCredentials object");
+  }
+  CallCredentials *self = ObjectWrap::Unwrap<CallCredentials>(info.This());
+  CallCredentials *other = ObjectWrap::Unwrap<CallCredentials>(
+      Nan::To<Object>(info[0]).ToLocalChecked());
+  grpc_credentials *creds = grpc_composite_credentials_create(
+      self->wrapped_credentials, other->wrapped_credentials, NULL);
+  info.GetReturnValue().Set(WrapStruct(creds));
+}
+
+
+
+NAN_METHOD(CallCredentials::CreateFromPlugin) {
+  if (!info[0]->IsFunction()) {
+    return Nan::ThrowTypeError(
+        "createFromPlugin's argument must be a function");
+  }
+  grpc_metadata_credentials_plugin plugin;
+  plugin_state *state = new plugin_state;
+  state->callback = new Nan::Callback(info[0].As<Function>());
+  plugin.get_metadata = plugin_get_metadata;
+  plugin.destroy = plugin_destroy_state;
+  plugin.state = reinterpret_cast<void*>(state);
+  grpc_credentials *creds = grpc_metadata_credentials_create_from_plugin(plugin,
+                                                                         NULL);
+  info.GetReturnValue().Set(WrapStruct(creds));
+}
+
+NAN_METHOD(PluginCallback) {
+  // Arguments: status code, error details, metadata
+  if (!info[0]->IsUint32()) {
+    return Nan::ThrowTypeError(
+        "The callback's first argument must be a status code");
+  }
+  if (!info[1]->IsString()) {
+    return Nan::ThrowTypeError(
+        "The callback's second argument must be a string");
+  }
+  if (!info[2]->IsObject()) {
+    return Nan::ThrowTypeError(
+        "The callback's third argument must be an object");
+  }
+  shared_ptr<Resources> resources(new Resources);
+  grpc_status_code code = static_cast<grpc_status_code>(
+      Nan::To<uint32_t>(info[0]).FromJust());
+  char *details = *Utf8String(info[1]);
+  grpc_metadata_array array;
+  if (!CreateMetadataArray(Nan::To<Object>(info[2]).ToLocalChecked(),
+                           &array, resources)){
+    return Nan::ThrowError("Failed to parse metadata");
+  }
+  grpc_credentials_plugin_metadata_cb cb =
+      reinterpret_cast<grpc_credentials_plugin_metadata_cb>(
+          Nan::Get(info.Callee(),
+                   Nan::New("cb").ToLocalChecked()
+                   ).ToLocalChecked().As<External>()->Value());
+  void *user_data =
+      Nan::Get(info.Callee(),
+               Nan::New("user_data").ToLocalChecked()
+               ).ToLocalChecked().As<External>()->Value();
+  cb(user_data, array.metadata, array.count, code, details);
+}
+
+NAUV_WORK_CB(SendPluginCallback) {
+  Nan::HandleScope scope;
+  plugin_callback_data *data = reinterpret_cast<plugin_callback_data*>(
+      async->data);
+  // Attach cb and user_data to plugin_callback so that it can access them later
+  v8::Local<v8::Function> plugin_callback = Nan::GetFunction(
+      Nan::New<v8::FunctionTemplate>(PluginCallback)).ToLocalChecked();
+  Nan::Set(plugin_callback, Nan::New("cb").ToLocalChecked(),
+           Nan::New<v8::External>(reinterpret_cast<void*>(data->cb)));
+  Nan::Set(plugin_callback, Nan::New("user_data").ToLocalChecked(),
+           Nan::New<v8::External>(data->user_data));
+  const int argc = 2;
+  v8::Local<v8::Value> argv[argc] = {
+    Nan::New(data->service_url).ToLocalChecked(),
+    plugin_callback
+  };
+  Nan::Callback *callback = data->state->callback;
+  callback->Call(argc, argv);
+  delete data;
+  uv_unref((uv_handle_t *)async);
+  uv_close((uv_handle_t *)async, (uv_close_cb)free);
+}
+
+void plugin_get_metadata(void *state, const char *service_url,
+                         grpc_credentials_plugin_metadata_cb cb,
+                         void *user_data) {
+  uv_async_t *async = static_cast<uv_async_t*>(malloc(sizeof(uv_async_t)));
+  uv_async_init(uv_default_loop(),
+                async,
+                SendPluginCallback);
+  plugin_callback_data *data = new plugin_callback_data;
+  data->state = reinterpret_cast<plugin_state*>(state);
+  data->service_url = service_url;
+  data->cb = cb;
+  data->user_data = user_data;
+  async->data = data;
+  /* libuv says that it will coalesce calls to uv_async_send. If there is ever a
+   * problem with a callback not getting called, that is probably the reason */
+  uv_async_send(async);
+}
+
+void plugin_destroy_state(void *ptr) {
+  plugin_state *state = reinterpret_cast<plugin_state *>(ptr);
+  delete state->callback;
+}
+
+}  // namespace node
+}  // namespace grpc
diff --git a/src/node/ext/call_credentials.h b/src/node/ext/call_credentials.h
new file mode 100644
index 0000000000000000000000000000000000000000..618292d19e8b9b040f529e22b186b49da3fa3b7f
--- /dev/null
+++ b/src/node/ext/call_credentials.h
@@ -0,0 +1,100 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_NODE_CALL_CREDENTIALS_H_
+#define GRPC_NODE_CALL_CREDENTIALS_H_
+
+#include <node.h>
+#include <nan.h>
+#include "grpc/grpc_security.h"
+
+namespace grpc {
+namespace node {
+
+class CallCredentials : public Nan::ObjectWrap {
+ public:
+  static void Init(v8::Local<v8::Object> exports);
+  static bool HasInstance(v8::Local<v8::Value> val);
+  /* Wrap a grpc_credentials struct in a javascript object */
+  static v8::Local<v8::Value> WrapStruct(grpc_credentials *credentials);
+
+  /* Returns the grpc_credentials struct that this object wraps */
+  grpc_credentials *GetWrappedCredentials();
+
+ private:
+  explicit CallCredentials(grpc_credentials *credentials);
+  ~CallCredentials();
+
+  // Prevent copying
+  CallCredentials(const CallCredentials &);
+  CallCredentials &operator=(const CallCredentials &);
+
+  static NAN_METHOD(New);
+  static NAN_METHOD(CreateSsl);
+  static NAN_METHOD(CreateFromPlugin);
+
+  static NAN_METHOD(Compose);
+  static Nan::Callback *constructor;
+  // Used for typechecking instances of this javascript class
+  static Nan::Persistent<v8::FunctionTemplate> fun_tpl;
+
+  grpc_credentials *wrapped_credentials;
+};
+
+/* Auth metadata plugin functionality */
+
+typedef struct plugin_state {
+  Nan::Callback *callback;
+} plugin_state;
+
+typedef struct plugin_callback_data {
+  plugin_state *state;
+  const char *service_url;
+  grpc_credentials_plugin_metadata_cb cb;
+  void *user_data;
+} plugin_callback_data;
+
+void plugin_get_metadata(void *state, const char *service_url,
+                         grpc_credentials_plugin_metadata_cb cb,
+                         void *user_data);
+
+void plugin_destroy_state(void *state);
+
+NAN_METHOD(PluginCallback);
+
+NAUV_WORK_CB(SendPluginCallback);
+
+}  // namespace node
+}  // namepsace grpc
+
+#endif  // GRPC_NODE_CALL_CREDENTIALS_H_
diff --git a/src/node/ext/channel.cc b/src/node/ext/channel.cc
index 6eb1e77688413d2cca4932e2cae9d8890f7196b0..a328c017130d1f25d6c5391a80a4d9b7dac66b1e 100644
--- a/src/node/ext/channel.cc
+++ b/src/node/ext/channel.cc
@@ -42,7 +42,7 @@
 #include "call.h"
 #include "channel.h"
 #include "completion_queue_async_worker.h"
-#include "credentials.h"
+#include "channel_credentials.h"
 #include "timeval.h"
 
 namespace grpc {
@@ -112,11 +112,11 @@ NAN_METHOD(Channel::New) {
     // Owned by the Channel object
     Utf8String host(info[0]);
     grpc_credentials *creds;
-    if (!Credentials::HasInstance(info[1])) {
+    if (!ChannelCredentials::HasInstance(info[1])) {
       return Nan::ThrowTypeError(
-          "Channel's second argument must be a credential");
+          "Channel's second argument must be a ChannelCredentials");
     }
-    Credentials *creds_object = ObjectWrap::Unwrap<Credentials>(
+    ChannelCredentials *creds_object = ObjectWrap::Unwrap<ChannelCredentials>(
         Nan::To<Object>(info[1]).ToLocalChecked());
     creds = creds_object->GetWrappedCredentials();
     grpc_channel_args *channel_args_ptr;
diff --git a/src/node/ext/credentials.cc b/src/node/ext/channel_credentials.cc
similarity index 64%
rename from src/node/ext/credentials.cc
rename to src/node/ext/channel_credentials.cc
index 4f41c92f6a7926ddaf7a39f0c1ae8ef0adb68e7b..3d47ff293df59ab7a0b1b000762b8dab46e23a13 100644
--- a/src/node/ext/credentials.cc
+++ b/src/node/ext/channel_credentials.cc
@@ -36,7 +36,9 @@
 #include "grpc/grpc.h"
 #include "grpc/grpc_security.h"
 #include "grpc/support/log.h"
-#include "credentials.h"
+#include "channel_credentials.h"
+#include "call_credentials.h"
+#include "call.h"
 
 namespace grpc {
 namespace node {
@@ -60,51 +62,40 @@ using v8::Object;
 using v8::ObjectTemplate;
 using v8::Value;
 
-Nan::Callback *Credentials::constructor;
-Persistent<FunctionTemplate> Credentials::fun_tpl;
+Nan::Callback *ChannelCredentials::constructor;
+Persistent<FunctionTemplate> ChannelCredentials::fun_tpl;
 
-Credentials::Credentials(grpc_credentials *credentials)
+ChannelCredentials::ChannelCredentials(grpc_credentials *credentials)
     : wrapped_credentials(credentials) {}
 
-Credentials::~Credentials() {
+ChannelCredentials::~ChannelCredentials() {
   grpc_credentials_release(wrapped_credentials);
 }
 
-void Credentials::Init(Local<Object> exports) {
+void ChannelCredentials::Init(Local<Object> exports) {
   HandleScope scope;
   Local<FunctionTemplate> tpl = Nan::New<FunctionTemplate>(New);
-  tpl->SetClassName(Nan::New("Credentials").ToLocalChecked());
+  tpl->SetClassName(Nan::New("ChannelCredentials").ToLocalChecked());
   tpl->InstanceTemplate()->SetInternalFieldCount(1);
+  Nan::SetPrototypeMethod(tpl, "compose", Compose);
   fun_tpl.Reset(tpl);
   Local<Function> ctr = Nan::GetFunction(tpl).ToLocalChecked();
-  Nan::Set(ctr, Nan::New("createDefault").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(CreateDefault)).ToLocalChecked());
   Nan::Set(ctr, Nan::New("createSsl").ToLocalChecked(),
            Nan::GetFunction(
                Nan::New<FunctionTemplate>(CreateSsl)).ToLocalChecked());
-  Nan::Set(ctr, Nan::New("createComposite").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(CreateComposite)).ToLocalChecked());
-  Nan::Set(ctr, Nan::New("createGce").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(CreateGce)).ToLocalChecked());
-  Nan::Set(ctr, Nan::New("createIam").ToLocalChecked(),
-           Nan::GetFunction(
-               Nan::New<FunctionTemplate>(CreateIam)).ToLocalChecked());
   Nan::Set(ctr, Nan::New("createInsecure").ToLocalChecked(),
            Nan::GetFunction(
                Nan::New<FunctionTemplate>(CreateInsecure)).ToLocalChecked());
-  Nan::Set(exports, Nan::New("Credentials").ToLocalChecked(), ctr);
+  Nan::Set(exports, Nan::New("ChannelCredentials").ToLocalChecked(), ctr);
   constructor = new Nan::Callback(ctr);
 }
 
-bool Credentials::HasInstance(Local<Value> val) {
+bool ChannelCredentials::HasInstance(Local<Value> val) {
   HandleScope scope;
   return Nan::New(fun_tpl)->HasInstance(val);
 }
 
-Local<Value> Credentials::WrapStruct(grpc_credentials *credentials) {
+Local<Value> ChannelCredentials::WrapStruct(grpc_credentials *credentials) {
   EscapableHandleScope scope;
   const int argc = 1;
   Local<Value> argv[argc] = {
@@ -118,20 +109,20 @@ Local<Value> Credentials::WrapStruct(grpc_credentials *credentials) {
   }
 }
 
-grpc_credentials *Credentials::GetWrappedCredentials() {
+grpc_credentials *ChannelCredentials::GetWrappedCredentials() {
   return wrapped_credentials;
 }
 
-NAN_METHOD(Credentials::New) {
+NAN_METHOD(ChannelCredentials::New) {
   if (info.IsConstructCall()) {
     if (!info[0]->IsExternal()) {
       return Nan::ThrowTypeError(
-          "Credentials can only be created with the provided functions");
+          "ChannelCredentials can only be created with the provided functions");
     }
     Local<External> ext = info[0].As<External>();
     grpc_credentials *creds_value =
         reinterpret_cast<grpc_credentials *>(ext->Value());
-    Credentials *credentials = new Credentials(creds_value);
+    ChannelCredentials *credentials = new ChannelCredentials(creds_value);
     credentials->Wrap(info.This());
     info.GetReturnValue().Set(info.This());
     return;
@@ -149,16 +140,7 @@ NAN_METHOD(Credentials::New) {
   }
 }
 
-NAN_METHOD(Credentials::CreateDefault) {
-  grpc_credentials *creds = grpc_google_default_credentials_create();
-  if (creds == NULL) {
-    info.GetReturnValue().SetNull();
-  } else {
-    info.GetReturnValue().Set(WrapStruct(creds));
-  }
-}
-
-NAN_METHOD(Credentials::CreateSsl) {
+NAN_METHOD(ChannelCredentials::CreateSsl) {
   char *root_certs = NULL;
   grpc_ssl_pem_key_cert_pair key_cert_pair = {NULL, NULL};
   if (::node::Buffer::HasInstance(info[0])) {
@@ -188,49 +170,25 @@ NAN_METHOD(Credentials::CreateSsl) {
   }
 }
 
-NAN_METHOD(Credentials::CreateComposite) {
-  if (!HasInstance(info[0])) {
+NAN_METHOD(ChannelCredentials::Compose) {
+  if (!ChannelCredentials::HasInstance(info.This())) {
     return Nan::ThrowTypeError(
-        "createComposite's first argument must be a Credentials object");
+        "compose can only be called on ChannelCredentials objects");
   }
-  if (!HasInstance(info[1])) {
+  if (!CallCredentials::HasInstance(info[0])) {
     return Nan::ThrowTypeError(
-        "createComposite's second argument must be a Credentials object");
+        "compose's first argument must be a CallCredentials object");
   }
-  Credentials *creds1 = ObjectWrap::Unwrap<Credentials>(
+  ChannelCredentials *self = ObjectWrap::Unwrap<ChannelCredentials>(
+      info.This());
+  if (self->wrapped_credentials == NULL) {
+    return Nan::ThrowTypeError(
+        "Cannot compose insecure credential");
+  }
+  CallCredentials *other = ObjectWrap::Unwrap<CallCredentials>(
       Nan::To<Object>(info[0]).ToLocalChecked());
-  Credentials *creds2 = ObjectWrap::Unwrap<Credentials>(
-      Nan::To<Object>(info[1]).ToLocalChecked());
   grpc_credentials *creds = grpc_composite_credentials_create(
-      creds1->wrapped_credentials, creds2->wrapped_credentials, NULL);
-  if (creds == NULL) {
-    info.GetReturnValue().SetNull();
-  } else {
-    info.GetReturnValue().Set(WrapStruct(creds));
-  }
-}
-
-NAN_METHOD(Credentials::CreateGce) {
-  Nan::HandleScope scope;
-  grpc_credentials *creds = grpc_google_compute_engine_credentials_create(NULL);
-  if (creds == NULL) {
-    info.GetReturnValue().SetNull();
-  } else {
-    info.GetReturnValue().Set(WrapStruct(creds));
-  }
-}
-
-NAN_METHOD(Credentials::CreateIam) {
-  if (!info[0]->IsString()) {
-    return Nan::ThrowTypeError("createIam's first argument must be a string");
-  }
-  if (!info[1]->IsString()) {
-    return Nan::ThrowTypeError("createIam's second argument must be a string");
-  }
-  Utf8String auth_token(info[0]);
-  Utf8String auth_selector(info[1]);
-  grpc_credentials *creds =
-      grpc_google_iam_credentials_create(*auth_token, *auth_selector, NULL);
+      self->wrapped_credentials, other->GetWrappedCredentials(), NULL);
   if (creds == NULL) {
     info.GetReturnValue().SetNull();
   } else {
@@ -238,7 +196,7 @@ NAN_METHOD(Credentials::CreateIam) {
   }
 }
 
-NAN_METHOD(Credentials::CreateInsecure) {
+NAN_METHOD(ChannelCredentials::CreateInsecure) {
   info.GetReturnValue().Set(WrapStruct(NULL));
 }
 
diff --git a/src/node/ext/credentials.h b/src/node/ext/channel_credentials.h
similarity index 83%
rename from src/node/ext/credentials.h
rename to src/node/ext/channel_credentials.h
index 1b211175d4575feb7d69560c99cdf90b387d6aa0..31ea0987bc659b7330b7bc851e9f3a0df1fbac68 100644
--- a/src/node/ext/credentials.h
+++ b/src/node/ext/channel_credentials.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef NET_GRPC_NODE_CREDENTIALS_H_
-#define NET_GRPC_NODE_CREDENTIALS_H_
+#ifndef NET_GRPC_NODE_CHANNEL_CREDENTIALS_H_
+#define NET_GRPC_NODE_CHANNEL_CREDENTIALS_H_
 
 #include <node.h>
 #include <nan.h>
@@ -43,7 +43,7 @@ namespace grpc {
 namespace node {
 
 /* Wrapper class for grpc_credentials structs */
-class Credentials : public Nan::ObjectWrap {
+class ChannelCredentials : public Nan::ObjectWrap {
  public:
   static void Init(v8::Local<v8::Object> exports);
   static bool HasInstance(v8::Local<v8::Value> val);
@@ -54,21 +54,18 @@ class Credentials : public Nan::ObjectWrap {
   grpc_credentials *GetWrappedCredentials();
 
  private:
-  explicit Credentials(grpc_credentials *credentials);
-  ~Credentials();
+  explicit ChannelCredentials(grpc_credentials *credentials);
+  ~ChannelCredentials();
 
   // Prevent copying
-  Credentials(const Credentials &);
-  Credentials &operator=(const Credentials &);
+  ChannelCredentials(const ChannelCredentials &);
+  ChannelCredentials &operator=(const ChannelCredentials &);
 
   static NAN_METHOD(New);
-  static NAN_METHOD(CreateDefault);
   static NAN_METHOD(CreateSsl);
-  static NAN_METHOD(CreateComposite);
-  static NAN_METHOD(CreateGce);
-  static NAN_METHOD(CreateFake);
-  static NAN_METHOD(CreateIam);
   static NAN_METHOD(CreateInsecure);
+
+  static NAN_METHOD(Compose);
   static Nan::Callback *constructor;
   // Used for typechecking instances of this javascript class
   static Nan::Persistent<v8::FunctionTemplate> fun_tpl;
@@ -79,4 +76,4 @@ class Credentials : public Nan::ObjectWrap {
 }  // namespace node
 }  // namespace grpc
 
-#endif  // NET_GRPC_NODE_CREDENTIALS_H_
+#endif  // NET_GRPC_NODE_CHANNEL_CREDENTIALS_H_
diff --git a/src/node/ext/completion_queue_async_worker.cc b/src/node/ext/completion_queue_async_worker.cc
index 3a79f7c45d0190d84110950a2803985a3aa3dd3c..619ea415156ba211eb55d2ab7776a71ff1c9ea4a 100644
--- a/src/node/ext/completion_queue_async_worker.cc
+++ b/src/node/ext/completion_queue_async_worker.cc
@@ -52,6 +52,9 @@ using v8::Value;
 
 grpc_completion_queue *CompletionQueueAsyncWorker::queue;
 
+// Invariants: current_threads <= max_queue_threads
+// (current_threads == max_queue_threads) || (waiting_next_calls == 0)
+
 int CompletionQueueAsyncWorker::current_threads;
 int CompletionQueueAsyncWorker::waiting_next_calls;
 
@@ -73,11 +76,15 @@ grpc_completion_queue *CompletionQueueAsyncWorker::GetQueue() { return queue; }
 void CompletionQueueAsyncWorker::Next() {
   Nan::HandleScope scope;
   if (current_threads < max_queue_threads) {
+    current_threads += 1;
     CompletionQueueAsyncWorker *worker = new CompletionQueueAsyncWorker();
     Nan::AsyncQueueWorker(worker);
   } else {
     waiting_next_calls += 1;
   }
+  GPR_ASSERT(current_threads <= max_queue_threads);
+  GPR_ASSERT((current_threads == max_queue_threads) ||
+             (waiting_next_calls == 0));
 }
 
 void CompletionQueueAsyncWorker::Init(Local<Object> exports) {
@@ -91,11 +98,15 @@ void CompletionQueueAsyncWorker::HandleOKCallback() {
   Nan::HandleScope scope;
   if (waiting_next_calls > 0) {
     waiting_next_calls -= 1;
+    // Old worker removed, new worker added. current_threads += 0
     CompletionQueueAsyncWorker *worker = new CompletionQueueAsyncWorker();
     Nan::AsyncQueueWorker(worker);
   } else {
     current_threads -= 1;
   }
+  GPR_ASSERT(current_threads <= max_queue_threads);
+  GPR_ASSERT((current_threads == max_queue_threads) ||
+             (waiting_next_calls == 0));
   Nan::Callback *callback = GetTagCallback(result.tag);
   Local<Value> argv[] = {Nan::Null(), GetTagNodeValue(result.tag)};
   callback->Call(2, argv);
@@ -104,6 +115,17 @@ void CompletionQueueAsyncWorker::HandleOKCallback() {
 }
 
 void CompletionQueueAsyncWorker::HandleErrorCallback() {
+  if (waiting_next_calls > 0) {
+    waiting_next_calls -= 1;
+    // Old worker removed, new worker added. current_threads += 0
+    CompletionQueueAsyncWorker *worker = new CompletionQueueAsyncWorker();
+    Nan::AsyncQueueWorker(worker);
+  } else {
+    current_threads -= 1;
+  }
+  GPR_ASSERT(current_threads <= max_queue_threads);
+  GPR_ASSERT((current_threads == max_queue_threads) ||
+             (waiting_next_calls == 0));
   Nan::HandleScope scope;
   Nan::Callback *callback = GetTagCallback(result.tag);
   Local<Value> argv[] = {Nan::Error(ErrorMessage())};
diff --git a/src/node/ext/node_grpc.cc b/src/node/ext/node_grpc.cc
index caca0fc4522db45923410bd498af0cab61f65559..5b5f3c1c5b88321a79267ecf82450fa0ea34e852 100644
--- a/src/node/ext/node_grpc.cc
+++ b/src/node/ext/node_grpc.cc
@@ -37,10 +37,11 @@
 #include "grpc/grpc.h"
 
 #include "call.h"
+#include "call_credentials.h"
 #include "channel.h"
+#include "channel_credentials.h"
 #include "server.h"
 #include "completion_queue_async_worker.h"
-#include "credentials.h"
 #include "server_credentials.h"
 
 using v8::Local;
@@ -240,11 +241,12 @@ void init(Local<Object> exports) {
   InitWriteFlags(exports);
 
   grpc::node::Call::Init(exports);
+  grpc::node::CallCredentials::Init(exports);
   grpc::node::Channel::Init(exports);
+  grpc::node::ChannelCredentials::Init(exports);
   grpc::node::Server::Init(exports);
   grpc::node::CompletionQueueAsyncWorker::Init(exports);
-  grpc::node::Credentials::Init(exports);
   grpc::node::ServerCredentials::Init(exports);
 }
 
-NODE_MODULE(grpc, init)
+NODE_MODULE(grpc_node, init)
diff --git a/src/node/index.js b/src/node/index.js
index 02b73f66ee70fcc0283e0928b3ebf4094db53544..591d9dd9155232a1f18f1cbf3031f3c4cbc38af9 100644
--- a/src/node/index.js
+++ b/src/node/index.js
@@ -43,7 +43,7 @@ var server = require('./src/server.js');
 
 var Metadata = require('./src/metadata.js');
 
-var grpc = require('bindings')('grpc');
+var grpc = require('bindings')('grpc_node');
 
 /**
  * Load a gRPC object from an existing ProtoBuf.Reflect object.
@@ -90,36 +90,9 @@ exports.load = function load(filename, format) {
     default:
     throw new Error('Unrecognized format "' + format + '"');
   }
-
   return loadObject(builder.ns);
 };
 
-/**
- * Get a function that a client can use to update metadata with authentication
- * information from a Google Auth credential object, which comes from the
- * google-auth-library.
- * @param {Object} credential The credential object to use
- * @return {function(Object, callback)} Metadata updater function
- */
-exports.getGoogleAuthDelegate = function getGoogleAuthDelegate(credential) {
-  /**
-   * Update a metadata object with authentication information.
-   * @param {string} authURI The uri to authenticate to
-   * @param {Object} metadata Metadata object
-   * @param {function(Error, Object)} callback
-   */
-  return function updateMetadata(authURI, metadata, callback) {
-    credential.getRequestMetadata(authURI, function(err, header) {
-      if (err) {
-        callback(err);
-        return;
-      }
-      metadata.add('authorization', header.Authorization);
-      callback(null, metadata);
-    });
-  };
-};
-
 /**
  * @see module:src/server.Server
  */
@@ -153,7 +126,7 @@ exports.writeFlags = grpc.writeFlags;
 /**
  * Credentials factories
  */
-exports.Credentials = grpc.Credentials;
+exports.credentials = require('./src/credentials.js');
 
 /**
  * ServerCredentials factories
diff --git a/src/node/interop/interop_client.js b/src/node/interop/interop_client.js
index 215d42121c674c2df24fe6ee1216a52bdb0788a8..14cc6c0efe10ea79da81674a33d36a8e7b84d2eb 100644
--- a/src/node/interop/interop_client.js
+++ b/src/node/interop/interop_client.js
@@ -37,7 +37,9 @@ var fs = require('fs');
 var path = require('path');
 var _ = require('lodash');
 var grpc = require('..');
-var testProto = grpc.load(__dirname + '/test.proto').grpc.testing;
+var testProto = grpc.load({
+  root: __dirname + '/../../..',
+  file: 'test/proto/test.proto'}).grpc.testing;
 var GoogleAuth = require('google-auth-library');
 
 var assert = require('assert');
@@ -49,6 +51,9 @@ var AUTH_USER = ('155450119199-vefjjaekcc6cmsd5914v6lqufunmh9ue' +
 var COMPUTE_ENGINE_USER = ('155450119199-r5aaqa2vqoa9g5mv2m6s3m1l293rlmel' +
     '@developer.gserviceaccount.com');
 
+var ECHO_INITIAL_KEY = 'x-grpc-test-echo-initial';
+var ECHO_TRAILING_KEY = 'x-grpc-test-echo-trailing-bin';
+
 /**
  * Create a buffer filled with size zeroes
  * @param {number} size The length of the buffer
@@ -60,6 +65,27 @@ function zeroBuffer(size) {
   return zeros;
 }
 
+/**
+ * This is used for testing functions with multiple asynchronous calls that
+ * can happen in different orders. This should be passed the number of async
+ * function invocations that can occur last, and each of those should call this
+ * function's return value
+ * @param {function()} done The function that should be called when a test is
+ *     complete.
+ * @param {number} count The number of calls to the resulting function if the
+ *     test passes.
+ * @return {function()} The function that should be called at the end of each
+ *     sequence of asynchronous functions.
+ */
+function multiDone(done, count) {
+  return function() {
+    count -= 1;
+    if (count <= 0) {
+      done();
+    }
+  };
+}
+
 /**
  * Run the empty_unary test
  * @param {Client} client The client to test against
@@ -271,6 +297,54 @@ function timeoutOnSleepingServer(client, done) {
   });
 }
 
+function customMetadata(client, done) {
+  done = multiDone(done, 5);
+  var metadata = new grpc.Metadata();
+  metadata.set(ECHO_INITIAL_KEY, 'test_initial_metadata_value');
+  metadata.set(ECHO_TRAILING_KEY, new Buffer('ababab', 'hex'));
+  var arg = {
+    response_type: 'COMPRESSABLE',
+    response_size: 314159,
+    payload: {
+      body: zeroBuffer(271828)
+    }
+  };
+  var streaming_arg = {
+    payload: {
+      body: zeroBuffer(271828)
+    }
+  };
+  var unary = client.unaryCall(arg, function(err, resp) {
+    assert.ifError(err);
+    done();
+  }, metadata);
+  unary.on('metadata', function(metadata) {
+    assert.deepEqual(metadata.get(ECHO_INITIAL_KEY),
+                     ['test_initial_metadata_value']);
+    done();
+  });
+  unary.on('status', function(status) {
+    var echo_trailer = status.metadata.get(ECHO_TRAILING_KEY);
+    assert(echo_trailer.length > 0);
+    assert.strictEqual(echo_trailer[0].toString('hex'), 'ababab');
+    done();
+  });
+  var stream = client.fullDuplexCall(metadata);
+  stream.on('metadata', function(metadata) {
+    assert.deepEqual(metadata.get(ECHO_INITIAL_KEY),
+                     ['test_initial_metadata_value']);
+    done();
+  });
+  stream.on('status', function(status) {
+    var echo_trailer = status.metadata.get(ECHO_TRAILING_KEY);
+    assert(echo_trailer.length > 0);
+    assert.strictEqual(echo_trailer[0].toString('hex'), 'ababab');
+    done();
+  });
+  stream.write(streaming_arg);
+  stream.end();
+}
+
 /**
  * Run one of the authentication tests.
  * @param {string} expected_user The expected username in the response
@@ -280,33 +354,26 @@ function timeoutOnSleepingServer(client, done) {
  *     primarily for use with mocha
  */
 function authTest(expected_user, scope, client, done) {
-  (new GoogleAuth()).getApplicationDefault(function(err, credential) {
+  var arg = {
+    response_type: 'COMPRESSABLE',
+    response_size: 314159,
+    payload: {
+      body: zeroBuffer(271828)
+    },
+    fill_username: true,
+    fill_oauth_scope: true
+  };
+  client.unaryCall(arg, function(err, resp) {
     assert.ifError(err);
-    if (credential.createScopedRequired() && scope) {
-      credential = credential.createScoped(scope);
+    assert.strictEqual(resp.payload.type, 'COMPRESSABLE');
+    assert.strictEqual(resp.payload.body.length, 314159);
+    assert.strictEqual(resp.username, expected_user);
+    if (scope) {
+      assert.strictEqual(resp.oauth_scope, AUTH_SCOPE_RESPONSE);
+    }
+    if (done) {
+      done();
     }
-    client.$updateMetadata = grpc.getGoogleAuthDelegate(credential);
-    var arg = {
-      response_type: 'COMPRESSABLE',
-      response_size: 314159,
-      payload: {
-        body: zeroBuffer(271828)
-      },
-      fill_username: true,
-      fill_oauth_scope: true
-    };
-    client.unaryCall(arg, function(err, resp) {
-      assert.ifError(err);
-      assert.strictEqual(resp.payload.type, 'COMPRESSABLE');
-      assert.strictEqual(resp.payload.body.length, 314159);
-      assert.strictEqual(resp.username, expected_user);
-      if (scope) {
-        assert.strictEqual(resp.oauth_scope, AUTH_SCOPE_RESPONSE);
-      }
-      if (done) {
-        done();
-      }
-    });
   });
 }
 
@@ -345,24 +412,86 @@ function oauth2Test(expected_user, scope, per_rpc, client, done) {
   });
 }
 
+function perRpcAuthTest(expected_user, scope, per_rpc, client, done) {
+  (new GoogleAuth()).getApplicationDefault(function(err, credential) {
+    assert.ifError(err);
+    var arg = {
+      fill_username: true,
+      fill_oauth_scope: true
+    };
+    if (credential.createScopedRequired() && scope) {
+      credential = credential.createScoped(scope);
+    }
+    var creds = grpc.credentials.createFromGoogleCredential(credential);
+    client.unaryCall(arg, function(err, resp) {
+      assert.ifError(err);
+      assert.strictEqual(resp.username, expected_user);
+      assert.strictEqual(resp.oauth_scope, AUTH_SCOPE_RESPONSE);
+      if (done) {
+        done();
+      }
+    }, null, {credentials: creds});
+  });
+}
+
+function getApplicationCreds(scope, callback) {
+  (new GoogleAuth()).getApplicationDefault(function(err, credential) {
+    if (err) {
+      callback(err);
+      return;
+    }
+    if (credential.createScopedRequired() && scope) {
+      credential = credential.createScoped(scope);
+    }
+    callback(null, grpc.credentials.createFromGoogleCredential(credential));
+  });
+}
+
+function getOauth2Creds(scope, callback) {
+  (new GoogleAuth()).getApplicationDefault(function(err, credential) {
+    if (err) {
+      callback(err);
+      return;
+    }
+    credential = credential.createScoped(scope);
+    credential.getAccessToken(function(err, token) {
+      if (err) {
+        callback(err);
+        return;
+      }
+      var updateMd = function(service_url, callback) {
+        var metadata = new grpc.Metadata();
+        metadata.add('authorization', 'Bearer ' + token);
+        callback(null, metadata);
+      };
+      callback(null, grpc.credentials.createFromMetadataGenerator(updateMd));
+    });
+  });
+}
+
 /**
  * Map from test case names to test functions
  */
 var test_cases = {
-  empty_unary: emptyUnary,
-  large_unary: largeUnary,
-  client_streaming: clientStreaming,
-  server_streaming: serverStreaming,
-  ping_pong: pingPong,
-  empty_stream: emptyStream,
-  cancel_after_begin: cancelAfterBegin,
-  cancel_after_first_response: cancelAfterFirstResponse,
-  timeout_on_sleeping_server: timeoutOnSleepingServer,
-  compute_engine_creds: _.partial(authTest, COMPUTE_ENGINE_USER, null),
-  service_account_creds: _.partial(authTest, AUTH_USER, AUTH_SCOPE),
-  jwt_token_creds: _.partial(authTest, AUTH_USER, null),
-  oauth2_auth_token: _.partial(oauth2Test, AUTH_USER, AUTH_SCOPE, false),
-  per_rpc_creds: _.partial(oauth2Test, AUTH_USER, AUTH_SCOPE, true)
+  empty_unary: {run: emptyUnary},
+  large_unary: {run: largeUnary},
+  client_streaming: {run: clientStreaming},
+  server_streaming: {run: serverStreaming},
+  ping_pong: {run: pingPong},
+  empty_stream: {run: emptyStream},
+  cancel_after_begin: {run: cancelAfterBegin},
+  cancel_after_first_response: {run: cancelAfterFirstResponse},
+  timeout_on_sleeping_server: {run: timeoutOnSleepingServer},
+  custom_metadata: {run: customMetadata},
+  compute_engine_creds: {run: _.partial(authTest, COMPUTE_ENGINE_USER, null),
+                         getCreds: _.partial(getApplicationCreds, null)},
+  service_account_creds: {run: _.partial(authTest, AUTH_USER, AUTH_SCOPE),
+                          getCreds: _.partial(getApplicationCreds, AUTH_SCOPE)},
+  jwt_token_creds: {run: _.partial(authTest, AUTH_USER, null),
+                    getCreds: _.partial(getApplicationCreds, null)},
+  oauth2_auth_token: {run: _.partial(oauth2Test, AUTH_USER, AUTH_SCOPE, false),
+                      getCreds: _.partial(getOauth2Creds, AUTH_SCOPE)},
+  per_rpc_creds: {run: _.partial(perRpcAuthTest, AUTH_USER, AUTH_SCOPE, true)}
 };
 
 /**
@@ -388,17 +517,30 @@ function runTest(address, host_override, test_case, tls, test_ca, done) {
       ca_path = process.env.SSL_CERT_FILE;
     }
     var ca_data = fs.readFileSync(ca_path);
-    creds = grpc.Credentials.createSsl(ca_data);
+    creds = grpc.credentials.createSsl(ca_data);
     if (host_override) {
       options['grpc.ssl_target_name_override'] = host_override;
       options['grpc.default_authority'] = host_override;
     }
   } else {
-    creds = grpc.Credentials.createInsecure();
+    creds = grpc.credentials.createInsecure();
   }
-  var client = new testProto.TestService(address, creds, options);
+  var test = test_cases[test_case];
 
-  test_cases[test_case](client, done);
+  var execute = function(err, creds) {
+    assert.ifError(err);
+    var client = new testProto.TestService(address, creds, options);
+    test.run(client, done);
+  };
+
+  if (test.getCreds) {
+    test.getCreds(function(err, new_creds) {
+      execute(err, grpc.credentials.combineChannelCredentials(
+          creds, new_creds));
+    });
+  } else {
+    execute(null, creds);
+  }
 }
 
 if (require.main === module) {
diff --git a/src/node/interop/interop_server.js b/src/node/interop/interop_server.js
index 99155e99584cb0689e29f1c2fad1d1861ca2499b..3e83304faa39490dd0293c352dc14dbe79284cb8 100644
--- a/src/node/interop/interop_server.js
+++ b/src/node/interop/interop_server.js
@@ -37,7 +37,12 @@ var fs = require('fs');
 var path = require('path');
 var _ = require('lodash');
 var grpc = require('..');
-var testProto = grpc.load(__dirname + '/test.proto').grpc.testing;
+var testProto = grpc.load({
+  root: __dirname + '/../../..',
+  file: 'test/proto/test.proto'}).grpc.testing;
+
+var ECHO_INITIAL_KEY = 'x-grpc-test-echo-initial';
+var ECHO_TRAILING_KEY = 'x-grpc-test-echo-trailing-bin';
 
 /**
  * Create a buffer filled with size zeroes
@@ -50,6 +55,34 @@ function zeroBuffer(size) {
   return zeros;
 }
 
+/**
+ * Echos a header metadata item as specified in the interop spec.
+ * @param {Call} call The call to echo metadata on
+ */
+function echoHeader(call) {
+  var echo_initial = call.metadata.get(ECHO_INITIAL_KEY);
+  if (echo_initial.length > 0) {
+    var response_metadata = new grpc.Metadata();
+    response_metadata.set(ECHO_INITIAL_KEY, echo_initial[0]);
+    call.sendMetadata(response_metadata);
+  }
+}
+
+/**
+ * Gets the trailer metadata that should be echoed when the call is done,
+ * as specified in the interop spec.
+ * @param {Call} call The call to get metadata from
+ * @return {grpc.Metadata} The metadata to send as a trailer
+ */
+function getEchoTrailer(call) {
+  var echo_trailer = call.metadata.get(ECHO_TRAILING_KEY);
+  var response_trailer = new grpc.Metadata();
+  if (echo_trailer.length > 0) {
+    response_trailer.set(ECHO_TRAILING_KEY, echo_trailer[0]);
+  }
+  return response_trailer;
+}
+
 /**
  * Respond to an empty parameter with an empty response.
  * NOTE: this currently does not work due to issue #137
@@ -58,7 +91,8 @@ function zeroBuffer(size) {
  *     or error
  */
 function handleEmpty(call, callback) {
-  callback(null, {});
+  echoHeader(call);
+  callback(null, {}, getEchoTrailer(call));
 }
 
 /**
@@ -68,6 +102,7 @@ function handleEmpty(call, callback) {
  *     error
  */
 function handleUnary(call, callback) {
+  echoHeader(call);
   var req = call.request;
   var zeros = zeroBuffer(req.response_size);
   var payload_type = req.response_type;
@@ -75,7 +110,8 @@ function handleUnary(call, callback) {
     payload_type = ['COMPRESSABLE',
                     'UNCOMPRESSABLE'][Math.random() < 0.5 ? 0 : 1];
   }
-  callback(null, {payload: {type: payload_type, body: zeros}});
+  callback(null, {payload: {type: payload_type, body: zeros}},
+           getEchoTrailer(call));
 }
 
 /**
@@ -85,12 +121,14 @@ function handleUnary(call, callback) {
  *     error
  */
 function handleStreamingInput(call, callback) {
+  echoHeader(call);
   var aggregate_size = 0;
   call.on('data', function(value) {
     aggregate_size += value.payload.body.length;
   });
   call.on('end', function() {
-    callback(null, {aggregated_payload_size: aggregate_size});
+    callback(null, {aggregated_payload_size: aggregate_size},
+             getEchoTrailer(call));
   });
 }
 
@@ -99,6 +137,7 @@ function handleStreamingInput(call, callback) {
  * @param {Call} call Call to handle
  */
 function handleStreamingOutput(call) {
+  echoHeader(call);
   var req = call.request;
   var payload_type = req.response_type;
   if (payload_type === 'RANDOM') {
@@ -113,7 +152,7 @@ function handleStreamingOutput(call) {
       }
     });
   });
-  call.end();
+  call.end(getEchoTrailer(call));
 }
 
 /**
@@ -122,6 +161,7 @@ function handleStreamingOutput(call) {
  * @param {Call} call Call to handle
  */
 function handleFullDuplex(call) {
+  echoHeader(call);
   call.on('data', function(value) {
     var payload_type = value.response_type;
     if (payload_type === 'RANDOM') {
@@ -138,7 +178,7 @@ function handleFullDuplex(call) {
     });
   });
   call.on('end', function() {
-    call.end();
+    call.end(getEchoTrailer(call));
   });
 }
 
diff --git a/src/node/interop/messages.proto b/src/node/interop/messages.proto
deleted file mode 100644
index 7df85e3c13601ddc64e85a07eeadd502759a5761..0000000000000000000000000000000000000000
--- a/src/node/interop/messages.proto
+++ /dev/null
@@ -1,132 +0,0 @@
-
-// Copyright 2015, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Message definitions to be used by integration test service definitions.
-
-syntax = "proto3";
-
-package grpc.testing;
-
-// The type of payload that should be returned.
-enum PayloadType {
-  // Compressable text format.
-  COMPRESSABLE = 0;
-
-  // Uncompressable binary format.
-  UNCOMPRESSABLE = 1;
-
-  // Randomly chosen from all other formats defined in this enum.
-  RANDOM = 2;
-}
-
-// A block of data, to simply increase gRPC message size.
-message Payload {
-  // The type of data in body.
-  PayloadType type = 1;
-  // Primary contents of payload.
-  bytes body = 2;
-}
-
-// Unary request.
-message SimpleRequest {
-  // Desired payload type in the response from the server.
-  // If response_type is RANDOM, server randomly chooses one from other formats.
-  PayloadType response_type = 1;
-
-  // Desired payload size in the response from the server.
-  // If response_type is COMPRESSABLE, this denotes the size before compression.
-  int32 response_size = 2;
-
-  // Optional input payload sent along with the request.
-  Payload payload = 3;
-
-  // Whether SimpleResponse should include username.
-  bool fill_username = 4;
-
-  // Whether SimpleResponse should include OAuth scope.
-  bool fill_oauth_scope = 5;
-}
-
-// Unary response, as configured by the request.
-message SimpleResponse {
-  // Payload to increase message size.
-  Payload payload = 1;
-  // The user the request came from, for verifying authentication was
-  // successful when the client expected it.
-  string username = 2;
-  // OAuth scope.
-  string oauth_scope = 3;
-}
-
-// Client-streaming request.
-message StreamingInputCallRequest {
-  // Optional input payload sent along with the request.
-  Payload payload = 1;
-
-  // Not expecting any payload from the response.
-}
-
-// Client-streaming response.
-message StreamingInputCallResponse {
-  // Aggregated size of payloads received from the client.
-  int32 aggregated_payload_size = 1;
-}
-
-// Configuration for a particular response.
-message ResponseParameters {
-  // Desired payload sizes in responses from the server.
-  // If response_type is COMPRESSABLE, this denotes the size before compression.
-  int32 size = 1;
-
-  // Desired interval between consecutive responses in the response stream in
-  // microseconds.
-  int32 interval_us = 2;
-}
-
-// Server-streaming request.
-message StreamingOutputCallRequest {
-  // Desired payload type in the response from the server.
-  // If response_type is RANDOM, the payload from each response in the stream
-  // might be of different types. This is to simulate a mixed type of payload
-  // stream.
-  PayloadType response_type = 1;
-
-  // Configuration for each expected response message.
-  repeated ResponseParameters response_parameters = 2;
-
-  // Optional input payload sent along with the request.
-  Payload payload = 3;
-}
-
-// Server-streaming response, as configured by the request and parameters.
-message StreamingOutputCallResponse {
-  // Payload to increase response size.
-  Payload payload = 1;
-}
diff --git a/src/node/interop/test.proto b/src/node/interop/test.proto
deleted file mode 100644
index 24e67497fa66ba175f99eab6d0c28573eac0235d..0000000000000000000000000000000000000000
--- a/src/node/interop/test.proto
+++ /dev/null
@@ -1,72 +0,0 @@
-
-// Copyright 2015, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// An integration test service that covers all the method signature permutations
-// of unary/streaming requests/responses.
-
-syntax = "proto3";
-
-import "empty.proto";
-import "messages.proto";
-
-package grpc.testing;
-
-// A simple service to test the various types of RPCs and experiment with
-// performance with various types of payload.
-service TestService {
-  // One empty request followed by one empty response.
-  rpc EmptyCall(grpc.testing.Empty) returns (grpc.testing.Empty);
-
-  // One request followed by one response.
-  rpc UnaryCall(SimpleRequest) returns (SimpleResponse);
-
-  // One request followed by a sequence of responses (streamed download).
-  // The server returns the payload with client desired type and sizes.
-  rpc StreamingOutputCall(StreamingOutputCallRequest)
-      returns (stream StreamingOutputCallResponse);
-
-  // A sequence of requests followed by one response (streamed upload).
-  // The server returns the aggregated size of client payload as the result.
-  rpc StreamingInputCall(stream StreamingInputCallRequest)
-      returns (StreamingInputCallResponse);
-
-  // A sequence of requests with each request served by the server immediately.
-  // As one request could lead to multiple responses, this interface
-  // demonstrates the idea of full duplexing.
-  rpc FullDuplexCall(stream StreamingOutputCallRequest)
-      returns (stream StreamingOutputCallResponse);
-
-  // A sequence of requests followed by a sequence of responses.
-  // The server buffers all the client requests and then serves them in order. A
-  // stream of responses are returned to the client when the server starts with
-  // first request.
-  rpc HalfDuplexCall(stream StreamingOutputCallRequest)
-      returns (stream StreamingOutputCallResponse);
-}
diff --git a/src/node/examples/perf_test.js b/src/node/performance/perf_test.js
similarity index 98%
rename from src/node/examples/perf_test.js
rename to src/node/performance/perf_test.js
index ba8fbf88d245a6df9aac7a4a948d52f5b6d85e35..fe51e4a603e09004092eb6ba5d46d42a5dc93e8f 100644
--- a/src/node/examples/perf_test.js
+++ b/src/node/performance/perf_test.js
@@ -42,7 +42,7 @@ function runTest(iterations, callback) {
   var testServer = interop_server.getServer(0, false);
   testServer.server.start();
   var client = new testProto.TestService('localhost:' + testServer.port,
-                                         grpc.Credentials.createInsecure());
+                                         grpc.credentials.createInsecure());
 
   function runIterations(finish) {
     var start = process.hrtime();
diff --git a/src/node/examples/qps_test.js b/src/node/performance/qps_test.js
similarity index 98%
rename from src/node/examples/qps_test.js
rename to src/node/performance/qps_test.js
index ec968b8540bcf46addfb8ba8eb9fbc094c8b8419..491f47364c08922e29337502b450d66bf440b363 100644
--- a/src/node/examples/qps_test.js
+++ b/src/node/performance/qps_test.js
@@ -62,7 +62,7 @@ function runTest(concurrent_calls, seconds, callback) {
   var testServer = interop_server.getServer(0, false);
   testServer.server.start();
   var client = new testProto.TestService('localhost:' + testServer.port,
-                                         grpc.Credentials.createInsecure());
+                                         grpc.credentials.createInsecure());
 
   var warmup_num = 100;
 
diff --git a/src/node/src/client.js b/src/node/src/client.js
index 7f510231b34a4a1058b92bf604ab6b1976d90bad..909376e76640d15a7e4697a4b6532722a390f194 100644
--- a/src/node/src/client.js
+++ b/src/node/src/client.js
@@ -40,7 +40,7 @@
 
 var _ = require('lodash');
 
-var grpc = require('bindings')('grpc.node');
+var grpc = require('bindings')('grpc_node');
 
 var common = require('./common');
 
@@ -54,7 +54,7 @@ var Readable = stream.Readable;
 var Writable = stream.Writable;
 var Duplex = stream.Duplex;
 var util = require('util');
-var version = require('../package.json').version;
+var version = require('../../../package.json').version;
 
 util.inherits(ClientWritableStream, Writable);
 
@@ -233,17 +233,23 @@ function getCall(channel, method, options) {
   var host;
   var parent;
   var propagate_flags;
+  var credentials;
   if (options) {
     deadline = options.deadline;
     host = options.host;
     parent = _.get(options, 'parent.call');
     propagate_flags = options.propagate_flags;
+    credentials = options.credentials;
   }
   if (deadline === undefined) {
     deadline = Infinity;
   }
-  return new grpc.Call(channel, method, deadline, host,
-                       parent, propagate_flags);
+  var call = new grpc.Call(channel, method, deadline, host,
+                           parent, propagate_flags);
+  if (credentials) {
+    call.setCredentials(credentials);
+  }
+  return call;
 }
 
 /**
@@ -282,60 +288,53 @@ function makeUnaryRequestFunction(method, serialize, deserialize) {
     emitter.getPeer = function getPeer() {
       return call.getPeer();
     };
-    this.$updateMetadata(this.$auth_uri, metadata, function(error, metadata) {
-      if (error) {
-        call.cancel();
-        callback(error);
-        return;
-      }
-      var client_batch = {};
-      var message = serialize(argument);
-      if (options) {
-        message.grpcWriteFlags = options.flags;
-      }
-      client_batch[grpc.opType.SEND_INITIAL_METADATA] =
-          metadata._getCoreRepresentation();
-      client_batch[grpc.opType.SEND_MESSAGE] = message;
-      client_batch[grpc.opType.SEND_CLOSE_FROM_CLIENT] = true;
-      client_batch[grpc.opType.RECV_INITIAL_METADATA] = true;
-      client_batch[grpc.opType.RECV_MESSAGE] = true;
-      client_batch[grpc.opType.RECV_STATUS_ON_CLIENT] = true;
-      call.startBatch(client_batch, function(err, response) {
-        response.status.metadata = Metadata._fromCoreRepresentation(
-              response.status.metadata);
-        var status = response.status;
-        var error;
-        var deserialized;
-        if (status.code === grpc.status.OK) {
-          if (err) {
-            // Got a batch error, but OK status. Something went wrong
-            callback(err);
-            return;
-          } else {
-            try {
-              deserialized = deserialize(response.read);
-            } catch (e) {
-              /* Change status to indicate bad server response. This will result
-               * in passing an error to the callback */
-              status = {
-                code: grpc.status.INTERNAL,
-                details: 'Failed to parse server response'
-              };
-            }
-          }
-        }
-        if (status.code !== grpc.status.OK) {
-          error = new Error(response.status.details);
-          error.code = status.code;
-          error.metadata = status.metadata;
-          callback(error);
+    var client_batch = {};
+    var message = serialize(argument);
+    if (options) {
+      message.grpcWriteFlags = options.flags;
+    }
+    client_batch[grpc.opType.SEND_INITIAL_METADATA] =
+        metadata._getCoreRepresentation();
+    client_batch[grpc.opType.SEND_MESSAGE] = message;
+    client_batch[grpc.opType.SEND_CLOSE_FROM_CLIENT] = true;
+    client_batch[grpc.opType.RECV_INITIAL_METADATA] = true;
+    client_batch[grpc.opType.RECV_MESSAGE] = true;
+    client_batch[grpc.opType.RECV_STATUS_ON_CLIENT] = true;
+    call.startBatch(client_batch, function(err, response) {
+      response.status.metadata = Metadata._fromCoreRepresentation(
+          response.status.metadata);
+      var status = response.status;
+      var error;
+      var deserialized;
+      if (status.code === grpc.status.OK) {
+        if (err) {
+          // Got a batch error, but OK status. Something went wrong
+          callback(err);
+          return;
         } else {
-          callback(null, deserialized);
+          try {
+            deserialized = deserialize(response.read);
+          } catch (e) {
+            /* Change status to indicate bad server response. This will result
+             * in passing an error to the callback */
+            status = {
+              code: grpc.status.INTERNAL,
+              details: 'Failed to parse server response'
+            };
+          }
         }
-        emitter.emit('status', status);
-        emitter.emit('metadata', Metadata._fromCoreRepresentation(
-            response.metadata));
-      });
+      }
+      if (status.code !== grpc.status.OK) {
+        error = new Error(response.status.details);
+        error.code = status.code;
+        error.metadata = status.metadata;
+        callback(error);
+      } else {
+        callback(null, deserialized);
+      }
+      emitter.emit('status', status);
+      emitter.emit('metadata', Metadata._fromCoreRepresentation(
+          response.metadata));
     });
     return emitter;
   }
@@ -371,62 +370,55 @@ function makeClientStreamRequestFunction(method, serialize, deserialize) {
       metadata = metadata.clone();
     }
     var stream = new ClientWritableStream(call, serialize);
-    this.$updateMetadata(this.$auth_uri, metadata, function(error, metadata) {
-      if (error) {
-        call.cancel();
-        callback(error);
+    var metadata_batch = {};
+    metadata_batch[grpc.opType.SEND_INITIAL_METADATA] =
+        metadata._getCoreRepresentation();
+    metadata_batch[grpc.opType.RECV_INITIAL_METADATA] = true;
+    call.startBatch(metadata_batch, function(err, response) {
+      if (err) {
+        // The call has stopped for some reason. A non-OK status will arrive
+        // in the other batch.
         return;
       }
-      var metadata_batch = {};
-      metadata_batch[grpc.opType.SEND_INITIAL_METADATA] =
-          metadata._getCoreRepresentation();
-      metadata_batch[grpc.opType.RECV_INITIAL_METADATA] = true;
-      call.startBatch(metadata_batch, function(err, response) {
+      stream.emit('metadata', Metadata._fromCoreRepresentation(
+          response.metadata));
+    });
+    var client_batch = {};
+    client_batch[grpc.opType.RECV_MESSAGE] = true;
+    client_batch[grpc.opType.RECV_STATUS_ON_CLIENT] = true;
+    call.startBatch(client_batch, function(err, response) {
+      response.status.metadata = Metadata._fromCoreRepresentation(
+          response.status.metadata);
+      var status = response.status;
+      var error;
+      var deserialized;
+      if (status.code === grpc.status.OK) {
         if (err) {
-          // The call has stopped for some reason. A non-OK status will arrive
-          // in the other batch.
+          // Got a batch error, but OK status. Something went wrong
+          callback(err);
           return;
-        }
-        stream.emit('metadata', Metadata._fromCoreRepresentation(
-            response.metadata));
-      });
-      var client_batch = {};
-      client_batch[grpc.opType.RECV_MESSAGE] = true;
-      client_batch[grpc.opType.RECV_STATUS_ON_CLIENT] = true;
-      call.startBatch(client_batch, function(err, response) {
-        response.status.metadata = Metadata._fromCoreRepresentation(
-              response.status.metadata);
-        var status = response.status;
-        var error;
-        var deserialized;
-        if (status.code === grpc.status.OK) {
-          if (err) {
-            // Got a batch error, but OK status. Something went wrong
-            callback(err);
-            return;
-          } else {
-            try {
-              deserialized = deserialize(response.read);
-            } catch (e) {
-              /* Change status to indicate bad server response. This will result
-               * in passing an error to the callback */
-              status = {
-                code: grpc.status.INTERNAL,
-                details: 'Failed to parse server response'
-              };
-            }
-          }
-        }
-        if (status.code !== grpc.status.OK) {
-          error = new Error(response.status.details);
-          error.code = status.code;
-          error.metadata = status.metadata;
-          callback(error);
         } else {
-          callback(null, deserialized);
+          try {
+            deserialized = deserialize(response.read);
+          } catch (e) {
+            /* Change status to indicate bad server response. This will result
+             * in passing an error to the callback */
+            status = {
+              code: grpc.status.INTERNAL,
+              details: 'Failed to parse server response'
+            };
+          }
         }
-        stream.emit('status', status);
-      });
+      }
+      if (status.code !== grpc.status.OK) {
+        error = new Error(response.status.details);
+        error.code = status.code;
+        error.metadata = status.metadata;
+        callback(error);
+      } else {
+        callback(null, deserialized);
+      }
+      stream.emit('status', status);
     });
     return stream;
   }
@@ -462,51 +454,44 @@ function makeServerStreamRequestFunction(method, serialize, deserialize) {
       metadata = metadata.clone();
     }
     var stream = new ClientReadableStream(call, deserialize);
-    this.$updateMetadata(this.$auth_uri, metadata, function(error, metadata) {
-      if (error) {
-        call.cancel();
-        stream.emit('error', error);
+    var start_batch = {};
+    var message = serialize(argument);
+    if (options) {
+      message.grpcWriteFlags = options.flags;
+    }
+    start_batch[grpc.opType.SEND_INITIAL_METADATA] =
+        metadata._getCoreRepresentation();
+    start_batch[grpc.opType.RECV_INITIAL_METADATA] = true;
+    start_batch[grpc.opType.SEND_MESSAGE] = message;
+    start_batch[grpc.opType.SEND_CLOSE_FROM_CLIENT] = true;
+    call.startBatch(start_batch, function(err, response) {
+      if (err) {
+        // The call has stopped for some reason. A non-OK status will arrive
+        // in the other batch.
         return;
       }
-      var start_batch = {};
-      var message = serialize(argument);
-      if (options) {
-        message.grpcWriteFlags = options.flags;
-      }
-      start_batch[grpc.opType.SEND_INITIAL_METADATA] =
-          metadata._getCoreRepresentation();
-      start_batch[grpc.opType.RECV_INITIAL_METADATA] = true;
-      start_batch[grpc.opType.SEND_MESSAGE] = message;
-      start_batch[grpc.opType.SEND_CLOSE_FROM_CLIENT] = true;
-      call.startBatch(start_batch, function(err, response) {
+      stream.emit('metadata', Metadata._fromCoreRepresentation(
+          response.metadata));
+    });
+    var status_batch = {};
+    status_batch[grpc.opType.RECV_STATUS_ON_CLIENT] = true;
+    call.startBatch(status_batch, function(err, response) {
+      response.status.metadata = Metadata._fromCoreRepresentation(
+          response.status.metadata);
+      stream.emit('status', response.status);
+      if (response.status.code !== grpc.status.OK) {
+        var error = new Error(response.status.details);
+        error.code = response.status.code;
+        error.metadata = response.status.metadata;
+        stream.emit('error', error);
+        return;
+      } else {
         if (err) {
-          // The call has stopped for some reason. A non-OK status will arrive
-          // in the other batch.
-          return;
-        }
-        stream.emit('metadata', Metadata._fromCoreRepresentation(
-            response.metadata));
-      });
-      var status_batch = {};
-      status_batch[grpc.opType.RECV_STATUS_ON_CLIENT] = true;
-      call.startBatch(status_batch, function(err, response) {
-        response.status.metadata = Metadata._fromCoreRepresentation(
-              response.status.metadata);
-        stream.emit('status', response.status);
-        if (response.status.code !== grpc.status.OK) {
-          var error = new Error(response.status.details);
-          error.code = response.status.code;
-          error.metadata = response.status.metadata;
-          stream.emit('error', error);
+          // Got a batch error, but OK status. Something went wrong
+          stream.emit('error', err);
           return;
-        } else {
-          if (err) {
-            // Got a batch error, but OK status. Something went wrong
-            stream.emit('error', err);
-            return;
-          }
         }
-      });
+      }
     });
     return stream;
   }
@@ -540,45 +525,38 @@ function makeBidiStreamRequestFunction(method, serialize, deserialize) {
       metadata = metadata.clone();
     }
     var stream = new ClientDuplexStream(call, serialize, deserialize);
-    this.$updateMetadata(this.$auth_uri, metadata, function(error, metadata) {
-      if (error) {
-        call.cancel();
-        stream.emit('error', error);
+    var start_batch = {};
+    start_batch[grpc.opType.SEND_INITIAL_METADATA] =
+        metadata._getCoreRepresentation();
+    start_batch[grpc.opType.RECV_INITIAL_METADATA] = true;
+    call.startBatch(start_batch, function(err, response) {
+      if (err) {
+        // The call has stopped for some reason. A non-OK status will arrive
+        // in the other batch.
         return;
       }
-      var start_batch = {};
-      start_batch[grpc.opType.SEND_INITIAL_METADATA] =
-          metadata._getCoreRepresentation();
-      start_batch[grpc.opType.RECV_INITIAL_METADATA] = true;
-      call.startBatch(start_batch, function(err, response) {
+      stream.emit('metadata', Metadata._fromCoreRepresentation(
+          response.metadata));
+    });
+    var status_batch = {};
+    status_batch[grpc.opType.RECV_STATUS_ON_CLIENT] = true;
+    call.startBatch(status_batch, function(err, response) {
+      response.status.metadata = Metadata._fromCoreRepresentation(
+          response.status.metadata);
+      stream.emit('status', response.status);
+      if (response.status.code !== grpc.status.OK) {
+        var error = new Error(response.status.details);
+        error.code = response.status.code;
+        error.metadata = response.status.metadata;
+        stream.emit('error', error);
+        return;
+      } else {
         if (err) {
-          // The call has stopped for some reason. A non-OK status will arrive
-          // in the other batch.
+          // Got a batch error, but OK status. Something went wrong
+          stream.emit('error', err);
           return;
         }
-        stream.emit('metadata', Metadata._fromCoreRepresentation(
-            response.metadata));
-      });
-      var status_batch = {};
-      status_batch[grpc.opType.RECV_STATUS_ON_CLIENT] = true;
-      call.startBatch(status_batch, function(err, response) {
-        response.status.metadata = Metadata._fromCoreRepresentation(
-              response.status.metadata);
-        stream.emit('status', response.status);
-        if (response.status.code !== grpc.status.OK) {
-          var error = new Error(response.status.details);
-          error.code = response.status.code;
-          error.metadata = response.status.metadata;
-          stream.emit('error', error);
-          return;
-        } else {
-          if (err) {
-            // Got a batch error, but OK status. Something went wrong
-            stream.emit('error', err);
-            return;
-          }
-        }
-      });
+      }
     });
     return stream;
   }
@@ -618,15 +596,8 @@ exports.makeClientConstructor = function(methods, serviceName) {
    * @param {grpc.Credentials} credentials Credentials to use to connect
    *     to the server
    * @param {Object} options Options to pass to the underlying channel
-   * @param {function(string, Object, function)=} updateMetadata function to
-   *     update the metadata for each request
    */
-  function Client(address, credentials, options, updateMetadata) {
-    if (!updateMetadata) {
-      updateMetadata = function(uri, metadata, callback) {
-        callback(null, metadata);
-      };
-    }
+  function Client(address, credentials, options) {
     if (!options) {
       options = {};
     }
@@ -634,11 +605,6 @@ exports.makeClientConstructor = function(methods, serviceName) {
     /* Private fields use $ as a prefix instead of _ because it is an invalid
      * prefix of a method name */
     this.$channel = new grpc.Channel(address, credentials, options);
-    // Remove the optional DNS scheme, trailing port, and trailing backslash
-    address = address.replace(/^(dns:\/{3})?([^:\/]+)(:\d+)?\/?$/, '$2');
-    this.$server_address = address;
-    this.$auth_uri = 'https://' + this.$server_address + '/' + serviceName;
-    this.$updateMetadata = updateMetadata;
   }
 
   _.each(methods, function(attrs, name) {
diff --git a/src/node/src/credentials.js b/src/node/src/credentials.js
new file mode 100644
index 0000000000000000000000000000000000000000..009ff633067ae3bebe28a51274ae7cbf704434c7
--- /dev/null
+++ b/src/node/src/credentials.js
@@ -0,0 +1,163 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/**
+ * Credentials module
+ *
+ * This module contains factory methods for two different credential types:
+ * CallCredentials and ChannelCredentials. ChannelCredentials are things like
+ * SSL credentials that can be used to secure a connection, and are used to
+ * construct a Client object. CallCredentials genrally modify metadata, so they
+ * can be attached to an individual method call.
+ *
+ * CallCredentials can be composed with other CallCredentials to create
+ * CallCredentials. ChannelCredentials can be composed with CallCredentials
+ * to create ChannelCredentials. No combined credential can have more than
+ * one ChannelCredentials.
+ *
+ * For example, to create a client secured with SSL that uses Google
+ * default application credentials to authenticate:
+ *
+ * var channel_creds = credentials.createSsl(root_certs);
+ * (new GoogleAuth()).getApplicationDefault(function(err, credential) {
+ *   var call_creds = credentials.createFromGoogleCredential(credential);
+ *   var combined_creds = credentials.combineChannelCredentials(
+ *       channel_creds, call_creds);
+ *   var client = new Client(address, combined_creds);
+ * });
+ *
+ * @module
+ */
+
+'use strict';
+
+var grpc = require('bindings')('grpc_node.node');
+
+var CallCredentials = grpc.CallCredentials;
+
+var ChannelCredentials = grpc.ChannelCredentials;
+
+var Metadata = require('./metadata.js');
+
+/**
+ * Create an SSL Credentials object. If using a client-side certificate, both
+ * the second and third arguments must be passed.
+ * @param {Buffer} root_certs The root certificate data
+ * @param {Buffer=} private_key The client certificate private key, if
+ *     applicable
+ * @param {Buffer=} cert_chain The client certificate cert chain, if applicable
+ * @return {ChannelCredentials} The SSL Credentials object
+ */
+exports.createSsl = ChannelCredentials.createSsl;
+
+/**
+ * Create a gRPC credentials object from a metadata generation function. This
+ * function gets the service URL and a callback as parameters. The error
+ * passed to the callback can optionally have a 'code' value attached to it,
+ * which corresponds to a status code that this library uses.
+ * @param {function(String, function(Error, Metadata))} metadata_generator The
+ *     function that generates metadata
+ * @return {CallCredentials} The credentials object
+ */
+exports.createFromMetadataGenerator = function(metadata_generator) {
+  return CallCredentials.createFromPlugin(function(service_url, callback) {
+    metadata_generator(service_url, function(error, metadata) {
+      var code = grpc.status.OK;
+      var message = '';
+      if (error) {
+        message = error.message;
+        if (error.hasOwnProperty('code')) {
+          code = error.code;
+        }
+      }
+      callback(code, message, metadata._getCoreRepresentation());
+    });
+  });
+};
+
+/**
+ * Create a gRPC credential from a Google credential object.
+ * @param {Object} google_credential The Google credential object to use
+ * @return {CallCredentials} The resulting credentials object
+ */
+exports.createFromGoogleCredential = function(google_credential) {
+  return exports.createFromMetadataGenerator(function(service_url, callback) {
+    google_credential.getRequestMetadata(service_url, function(err, header) {
+      if (err) {
+        callback(err);
+        return;
+      }
+      var metadata = new Metadata();
+      metadata.add('authorization', header.Authorization);
+      callback(null, metadata);
+    });
+  });
+};
+
+/**
+ * Combine a ChannelCredentials with any number of CallCredentials into a single
+ * ChannelCredentials object.
+ * @param {ChannelCredentials} channel_credential The ChannelCredentials to
+ *     start with
+ * @param {...CallCredentials} credentials The CallCredentials to compose
+ * @return ChannelCredentials A credentials object that combines all of the
+ *     input credentials
+ */
+exports.combineChannelCredentials = function(channel_credential) {
+  var current = channel_credential;
+  for (var i = 1; i < arguments.length; i++) {
+    current = current.compose(arguments[i]);
+  }
+  return current;
+};
+
+/**
+ * Combine any number of CallCredentials into a single CallCredentials object
+ * @param {...CallCredentials} credentials the CallCredentials to compose
+ * @return CallCredentials A credentials object that combines all of the input
+ *     credentials
+ */
+exports.combineCallCredentials = function() {
+  var current = arguments[0];
+  for (var i = 1; i < arguments.length; i++) {
+    current = current.compose(arguments[i]);
+  }
+  return current;
+}
+
+/**
+ * Create an insecure credentials object. This is used to create a channel that
+ * does not use SSL. This cannot be composed with anything.
+ * @return {ChannelCredentials} The insecure credentials object
+ */
+exports.createInsecure = ChannelCredentials.createInsecure;
diff --git a/src/node/src/metadata.js b/src/node/src/metadata.js
index c1da70b1974f61aaef7e529a9f31de78ce46751e..5c24e46c9b2c8dc70003d442116725aaded38a70 100644
--- a/src/node/src/metadata.js
+++ b/src/node/src/metadata.js
@@ -59,6 +59,7 @@ function normalizeKey(key) {
 function validate(key, value) {
   if (_.endsWith(key, '-bin')) {
     if (!(value instanceof Buffer)) {
+      console.log(value.constructor.toString());
       throw new Error('keys that end with \'-bin\' must have Buffer values');
     }
   } else {
@@ -173,7 +174,9 @@ Metadata.prototype._getCoreRepresentation = function() {
 Metadata._fromCoreRepresentation = function(metadata) {
   var newMetadata = new Metadata();
   if (metadata) {
-    newMetadata._internal_repr = _.cloneDeep(metadata);
+    _.forOwn(metadata, function(value, key) {
+      newMetadata._internal_repr[key] = _.clone(value);
+    });
   }
   return newMetadata;
 };
diff --git a/src/node/src/server.js b/src/node/src/server.js
index 70b4a9d80e3589e8543816df842f702db0f4bfb4..87b5b7ad06ee739ea2ab6d21c765ea39cd70a37c 100644
--- a/src/node/src/server.js
+++ b/src/node/src/server.js
@@ -40,7 +40,7 @@
 
 var _ = require('lodash');
 
-var grpc = require('bindings')('grpc.node');
+var grpc = require('bindings')('grpc_node');
 
 var common = require('./common');
 
diff --git a/src/node/examples/stock_server.js b/src/node/test/async_test.js
similarity index 51%
rename from src/node/examples/stock_server.js
rename to src/node/test/async_test.js
index 12e547958450cb0ef8341a4cf4fe88c217912705..ce3ce50a2d6df113f8f4469b3920bf024ed94647 100644
--- a/src/node/examples/stock_server.js
+++ b/src/node/test/async_test.js
@@ -33,55 +33,66 @@
 
 'use strict';
 
-var _ = require('lodash');
+var assert = require('assert');
+
 var grpc = require('..');
-var examples = grpc.load(__dirname + '/stock.proto').examples;
+var math = grpc.load(__dirname + '/math/math.proto').math;
 
-function getLastTradePrice(call, callback) {
-  callback(null, {symbol: call.request.symbol, price: 88});
-}
 
-function watchFutureTrades(call) {
-  for (var i = 0; i < call.request.num_trades_to_watch; i++) {
-    call.write({price: 88.00 + i * 10.00});
-  }
-  call.end();
-}
+/**
+ * Client to use to make requests to a running server.
+ */
+var math_client;
 
-function getHighestTradePrice(call, callback) {
-  var trades = [];
-  call.on('data', function(data) {
-    trades.push({symbol: data.symbol, price: _.random(0, 100)});
-  });
-  call.on('end', function() {
-    if(_.isEmpty(trades)) {
-      callback(null, {});
-    } else {
-      callback(null, _.max(trades, function(trade){return trade.price;}));
-    }
-  });
-}
+/**
+ * Server to test against
+ */
+var getServer = require('./math/math_server.js');
+
+var server = getServer();
 
-function getLastTradePriceMultiple(call) {
-  call.on('data', function(data) {
-    call.write({price: 88});
+describe('Async functionality', function() {
+  before(function(done) {
+    var port_num = server.bind('0.0.0.0:0',
+                               grpc.ServerCredentials.createInsecure());
+    server.start();
+    math_client = new math.Math('localhost:' + port_num,
+                                grpc.Credentials.createInsecure());
+    done();
   });
-  call.on('end', function() {
-    call.end();
+  after(function() {
+    server.forceShutdown();
   });
-}
+  it('should not hang', function(done) {
+    var chunkCount=0;
+    var call = math_client.sum(function handleSumResult(err, value) {
+      assert.ifError(err);
+      assert.equal(value.num, chunkCount);
+    });
 
-var stockServer = new grpc.Server();
-stockServer.addProtoService(examples.Stock.service, {
-  getLastTradePrice: getLastTradePrice,
-  getLastTradePriceMultiple: getLastTradePriceMultiple,
-  watchFutureTrades: watchFutureTrades,
-  getHighestTradePrice: getHighestTradePrice
-});
+    var path = require('path');
+    var fs = require('fs');
+    var fileToRead = path.join(__dirname, 'numbers.txt');
+    var readStream = fs.createReadStream(fileToRead);
+
+    readStream.once('readable', function () {
+      readStream.on('data', function (chunk) {
+        call.write({'num': 1});
+        chunkCount += 1;
+      });
+
+      readStream.on('end', function () {
+        call.end();
+      });
 
-if (require.main === module) {
-  stockServer.bind('0.0.0.0:50051', grpc.ServerCredentials.createInsecure());
-  stockServer.start();
-}
+      readStream.on('error', function (error) {
+        console.log(error);
+      });
+    });
 
-module.exports = stockServer;
+    call.on('status', function checkStatus(status) {
+      assert.strictEqual(status.code, grpc.status.OK);
+      done();
+    });
+  });
+});
diff --git a/src/node/test/call_test.js b/src/node/test/call_test.js
index e7f071bcd537699a892d9fdac608e473de3a2264..c316fe7f10d85ae0aec2c89070c49aeae86a005a 100644
--- a/src/node/test/call_test.js
+++ b/src/node/test/call_test.js
@@ -34,7 +34,7 @@
 'use strict';
 
 var assert = require('assert');
-var grpc = require('bindings')('grpc.node');
+var grpc = require('bindings')('grpc_node');
 
 /**
  * Helper function to return an absolute deadline given a relative timeout in
@@ -48,7 +48,7 @@ function getDeadline(timeout_secs) {
   return deadline;
 }
 
-var insecureCreds = grpc.Credentials.createInsecure();
+var insecureCreds = grpc.ChannelCredentials.createInsecure();
 
 describe('call', function() {
   var channel;
diff --git a/src/node/test/channel_test.js b/src/node/test/channel_test.js
index d81df2a36d88d4c81ddd9c8d133c42702e79bd26..b86f89b8a850ec8f6bf8292723f45b1129a94ffd 100644
--- a/src/node/test/channel_test.js
+++ b/src/node/test/channel_test.js
@@ -34,7 +34,7 @@
 'use strict';
 
 var assert = require('assert');
-var grpc = require('bindings')('grpc.node');
+var grpc = require('bindings')('grpc_node');
 
 /**
  * This is used for testing functions with multiple asynchronous calls that
@@ -56,7 +56,7 @@ function multiDone(done, count) {
     }
   };
 }
-var insecureCreds = grpc.Credentials.createInsecure();
+var insecureCreds = grpc.ChannelCredentials.createInsecure();
 
 describe('channel', function() {
   describe('constructor', function() {
@@ -149,12 +149,13 @@ describe('channel', function() {
     afterEach(function() {
       channel.close();
     });
-    it('should time out if called alone', function(done) {
+    it.only('should time out if called alone', function(done) {
       var old_state = channel.getConnectivityState();
       var deadline = new Date();
       deadline.setSeconds(deadline.getSeconds() + 1);
       channel.watchConnectivityState(old_state, deadline, function(err, value) {
         assert(err);
+        console.log('Callback from watchConnectivityState');
         done();
       });
     });
diff --git a/src/node/test/constant_test.js b/src/node/test/constant_test.js
index fa06ad4e4d45d18564e4504cdcc07a3b06abd07a..b17cd339cb0effafdacfd574606376e8f73646f5 100644
--- a/src/node/test/constant_test.js
+++ b/src/node/test/constant_test.js
@@ -34,7 +34,7 @@
 'use strict';
 
 var assert = require('assert');
-var grpc = require('bindings')('grpc.node');
+var grpc = require('bindings')('grpc_node');
 
 /**
  * List of all status names
diff --git a/src/node/test/credentials_test.js b/src/node/test/credentials_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..8eb91ee69e6a808442c9c65ea690eb368f5a09d0
--- /dev/null
+++ b/src/node/test/credentials_test.js
@@ -0,0 +1,243 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+'use strict';
+
+var assert = require('assert');
+var fs = require('fs');
+var path = require('path');
+
+var grpc = require('..');
+
+/**
+ * This is used for testing functions with multiple asynchronous calls that
+ * can happen in different orders. This should be passed the number of async
+ * function invocations that can occur last, and each of those should call this
+ * function's return value
+ * @param {function()} done The function that should be called when a test is
+ *     complete.
+ * @param {number} count The number of calls to the resulting function if the
+ *     test passes.
+ * @return {function()} The function that should be called at the end of each
+ *     sequence of asynchronous functions.
+ */
+function multiDone(done, count) {
+  return function() {
+    count -= 1;
+    if (count <= 0) {
+      done();
+    }
+  };
+}
+
+describe('client credentials', function() {
+  var Client;
+  var server;
+  var port;
+  var client_ssl_creds;
+  var client_options = {};
+  before(function() {
+    var proto = grpc.load(__dirname + '/test_service.proto');
+    server = new grpc.Server();
+    server.addProtoService(proto.TestService.service, {
+      unary: function(call, cb) {
+        call.sendMetadata(call.metadata);
+        cb(null, {});
+      },
+      clientStream: function(stream, cb){
+        stream.on('data', function(data) {});
+        stream.on('end', function() {
+          stream.sendMetadata(stream.metadata);
+          cb(null, {});
+        });
+      },
+      serverStream: function(stream) {
+        stream.sendMetadata(stream.metadata);
+        stream.end();
+      },
+      bidiStream: function(stream) {
+        stream.on('data', function(data) {});
+        stream.on('end', function() {
+          stream.sendMetadata(stream.metadata);
+          stream.end();
+        });
+      }
+    });
+    var key_path = path.join(__dirname, './data/server1.key');
+    var pem_path = path.join(__dirname, './data/server1.pem');
+    var key_data = fs.readFileSync(key_path);
+    var pem_data = fs.readFileSync(pem_path);
+    var creds = grpc.ServerCredentials.createSsl(null,
+                                                 [{private_key: key_data,
+                                                   cert_chain: pem_data}]);
+    //creds = grpc.ServerCredentials.createInsecure();
+    port = server.bind('localhost:0', creds);
+    server.start();
+
+    Client = proto.TestService;
+    var ca_path = path.join(__dirname, '../test/data/ca.pem');
+    var ca_data = fs.readFileSync(ca_path);
+    client_ssl_creds = grpc.credentials.createSsl(ca_data);
+    var host_override = 'foo.test.google.fr';
+    client_options['grpc.ssl_target_name_override'] = host_override;
+    client_options['grpc.default_authority'] = host_override;
+  });
+  after(function() {
+    server.forceShutdown();
+  });
+  it('Should accept SSL creds for a client', function(done) {
+    var client = new Client('localhost:' + port, client_ssl_creds,
+                            client_options);
+    client.unary({}, function(err, data) {
+      assert.ifError(err);
+      done();
+    });
+  });
+  it('Should update metadata with SSL creds', function(done) {
+    var metadataUpdater = function(service_url, callback) {
+      var metadata = new grpc.Metadata();
+      metadata.set('plugin_key', 'plugin_value');
+      callback(null, metadata);
+    };
+    var creds = grpc.credentials.createFromMetadataGenerator(metadataUpdater);
+    var combined_creds = grpc.credentials.combineCredentials(client_ssl_creds,
+                                                             creds);
+    var client = new Client('localhost:' + port, combined_creds,
+                            client_options);
+    var call = client.unary({}, function(err, data) {
+      assert.ifError(err);
+    });
+    call.on('metadata', function(metadata) {
+      assert.deepEqual(metadata.get('plugin_key'), ['plugin_value']);
+      done();
+    });
+  });
+  it('Should update metadata for two simultaneous calls', function(done) {
+    done = multiDone(done, 2);
+    var metadataUpdater = function(service_url, callback) {
+      var metadata = new grpc.Metadata();
+      metadata.set('plugin_key', 'plugin_value');
+      callback(null, metadata);
+    };
+    var creds = grpc.credentials.createFromMetadataGenerator(metadataUpdater);
+    var combined_creds = grpc.credentials.combineCredentials(client_ssl_creds,
+                                                             creds);
+    var client = new Client('localhost:' + port, combined_creds,
+                            client_options);
+    var call = client.unary({}, function(err, data) {
+      assert.ifError(err);
+    });
+    call.on('metadata', function(metadata) {
+      assert.deepEqual(metadata.get('plugin_key'), ['plugin_value']);
+      done();
+    });
+    var call2 = client.unary({}, function(err, data) {
+      assert.ifError(err);
+    });
+    call2.on('metadata', function(metadata) {
+      assert.deepEqual(metadata.get('plugin_key'), ['plugin_value']);
+      done();
+    });
+  });
+  describe('Per-rpc creds', function() {
+    var client;
+    var updater_creds;
+    before(function() {
+      client = new Client('localhost:' + port, client_ssl_creds,
+                          client_options);
+      var metadataUpdater = function(service_url, callback) {
+        var metadata = new grpc.Metadata();
+        metadata.set('plugin_key', 'plugin_value');
+        callback(null, metadata);
+      };
+      updater_creds = grpc.credentials.createFromMetadataGenerator(
+          metadataUpdater);
+    });
+    it('Should update metadata on a unary call', function(done) {
+      var call = client.unary({}, function(err, data) {
+        assert.ifError(err);
+      }, null, {credentials: updater_creds});
+      call.on('metadata', function(metadata) {
+        assert.deepEqual(metadata.get('plugin_key'), ['plugin_value']);
+        done();
+      });
+    });
+    it('should update metadata on a client streaming call', function(done) {
+      var call = client.clientStream(function(err, data) {
+        assert.ifError(err);
+      }, null, {credentials: updater_creds});
+      call.on('metadata', function(metadata) {
+        assert.deepEqual(metadata.get('plugin_key'), ['plugin_value']);
+        done();
+      });
+      call.end();
+    });
+    it('should update metadata on a server streaming call', function(done) {
+      var call = client.serverStream({}, null, {credentials: updater_creds});
+      call.on('data', function() {});
+      call.on('metadata', function(metadata) {
+        assert.deepEqual(metadata.get('plugin_key'), ['plugin_value']);
+        done();
+      });
+    });
+    it('should update metadata on a bidi streaming call', function(done) {
+      var call = client.bidiStream(null, {credentials: updater_creds});
+      call.on('data', function() {});
+      call.on('metadata', function(metadata) {
+        assert.deepEqual(metadata.get('plugin_key'), ['plugin_value']);
+        done();
+      });
+      call.end();
+    });
+    it('should be able to use multiple plugin credentials', function(done) {
+      var altMetadataUpdater = function(service_url, callback) {
+        var metadata = new grpc.Metadata();
+        metadata.set('other_plugin_key', 'other_plugin_value');
+        callback(null, metadata);
+      };
+      var alt_updater_creds = grpc.credentials.createFromMetadataGenerator(
+          altMetadataUpdater);
+      var combined_updater = grpc.credentials.combineCallCredentials(
+          updater_creds, alt_updater_creds);
+      var call = client.unary({}, function(err, data) {
+        assert.ifError(err);
+      }, null, {credentials: updater_creds});
+      call.on('metadata', function(metadata) {
+        assert.deepEqual(metadata.get('plugin_key'), ['plugin_value']);
+        assert.deepEqual(metadata.get('other_plugin_key'),
+                         ['other_plugin_value']);
+        done();
+      });
+    });
+  });
+});
diff --git a/src/node/test/end_to_end_test.js b/src/node/test/end_to_end_test.js
index 4b8da3bfb171172bfee92fb023632aa17814046d..0f6c5941c4de48246510019d009851d9838ff305 100644
--- a/src/node/test/end_to_end_test.js
+++ b/src/node/test/end_to_end_test.js
@@ -34,7 +34,7 @@
 'use strict';
 
 var assert = require('assert');
-var grpc = require('bindings')('grpc.node');
+var grpc = require('bindings')('grpc_node');
 
 /**
  * This is used for testing functions with multiple asynchronous calls that
@@ -57,7 +57,7 @@ function multiDone(done, count) {
   };
 }
 
-var insecureCreds = grpc.Credentials.createInsecure();
+var insecureCreds = grpc.ChannelCredentials.createInsecure();
 
 describe('end-to-end', function() {
   var server;
diff --git a/src/node/test/health_test.js b/src/node/test/health_test.js
index 9267bff7ebe6f1a9e0ebd320dbbcafa15be6c3a3..a4dc24cf4671e0e085f99e25dd4e7802f82fb657 100644
--- a/src/node/test/health_test.js
+++ b/src/node/test/health_test.js
@@ -54,7 +54,7 @@ describe('Health Checking', function() {
                                      grpc.ServerCredentials.createInsecure());
     healthServer.start();
     healthClient = new health.Client('localhost:' + port_num,
-                                     grpc.Credentials.createInsecure());
+                                     grpc.credentials.createInsecure());
   });
   after(function() {
     healthServer.forceShutdown();
diff --git a/src/node/test/interop_sanity_test.js b/src/node/test/interop_sanity_test.js
index 2ca07c1d50d28a8e0f865327b87a89eeef4be0ef..804c1d45e4a8cafcb60fc6252b288e9c98d22ec8 100644
--- a/src/node/test/interop_sanity_test.js
+++ b/src/node/test/interop_sanity_test.js
@@ -90,4 +90,8 @@ describe('Interop tests', function() {
     interop_client.runTest(port, name_override, 'timeout_on_sleeping_server',
                            true, true, done);
   });
+  it('should pass custom_metadata', function(done) {
+    interop_client.runTest(port, name_override, 'custom_metadata',
+                           true, true, done);
+  });
 });
diff --git a/src/node/examples/math.proto b/src/node/test/math/math.proto
similarity index 100%
rename from src/node/examples/math.proto
rename to src/node/test/math/math.proto
diff --git a/src/node/examples/math_server.js b/src/node/test/math/math_server.js
similarity index 92%
rename from src/node/examples/math_server.js
rename to src/node/test/math/math_server.js
index 31892c65df31a08a448f68df178932ee78fe4d2d..9d06596f3d3c3bdcf238a77f906681891dd2e18f 100644
--- a/src/node/examples/math_server.js
+++ b/src/node/test/math/math_server.js
@@ -33,7 +33,7 @@
 
 'use strict';
 
-var grpc = require('..');
+var grpc = require('../..');
 var math = grpc.load(__dirname + '/math.proto').math;
 
 /**
@@ -106,15 +106,20 @@ function mathDivMany(stream) {
     stream.end();
   });
 }
-var server = new grpc.Server();
-server.addProtoService(math.Math.service, {
-  div: mathDiv,
-  fib: mathFib,
-  sum: mathSum,
-  divMany: mathDivMany
-});
+
+function getMathServer() {
+  var server = new grpc.Server();
+  server.addProtoService(math.Math.service, {
+    div: mathDiv,
+    fib: mathFib,
+    sum: mathSum,
+    divMany: mathDivMany
+  });
+  return server;
+}
 
 if (require.main === module) {
+  var server = getMathServer();
   server.bind('0.0.0.0:50051', grpc.ServerCredentials.createInsecure());
   server.start();
 }
@@ -122,4 +127,4 @@ if (require.main === module) {
 /**
  * See docs for server
  */
-module.exports = server;
+module.exports = getMathServer;
diff --git a/src/node/test/math_client_test.js b/src/node/test/math_client_test.js
index 80b0c5ff2a989edb76b3347cace76645e6b1e16c..6361d97857aa88bed6da0ebbfd0cedbe97fb8f57 100644
--- a/src/node/test/math_client_test.js
+++ b/src/node/test/math_client_test.js
@@ -36,7 +36,7 @@
 var assert = require('assert');
 
 var grpc = require('..');
-var math = grpc.load(__dirname + '/../examples/math.proto').math;
+var math = grpc.load(__dirname + '/math/math.proto').math;
 
 /**
  * Client to use to make requests to a running server.
@@ -46,8 +46,9 @@ var math_client;
 /**
  * Server to test against
  */
-var server = require('../examples/math_server.js');
+var getServer = require('./math/math_server.js');
 
+var server = getServer();
 
 describe('Math client', function() {
   before(function(done) {
@@ -55,7 +56,7 @@ describe('Math client', function() {
                                grpc.ServerCredentials.createInsecure());
     server.start();
     math_client = new math.Math('localhost:' + port_num,
-                                grpc.Credentials.createInsecure());
+                                grpc.credentials.createInsecure());
     done();
   });
   after(function() {
diff --git a/src/node/test/numbers.txt b/src/node/test/numbers.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4972919b4e39c79d09f475e2343d919eec385d24
--- /dev/null
+++ b/src/node/test/numbers.txt
@@ -0,0 +1,496 @@
+1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
+1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
+1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
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+1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
+1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
+1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
diff --git a/src/node/test/server_test.js b/src/node/test/server_test.js
index 1e69d52e5831fb805deaaaa1d1f1a99dcba050a8..999a183b3cb5043b81c861a36eb8a6adbaea4e54 100644
--- a/src/node/test/server_test.js
+++ b/src/node/test/server_test.js
@@ -36,7 +36,7 @@
 var assert = require('assert');
 var fs = require('fs');
 var path = require('path');
-var grpc = require('bindings')('grpc.node');
+var grpc = require('bindings')('grpc_node');
 
 describe('server', function() {
   describe('constructor', function() {
diff --git a/src/node/test/surface_test.js b/src/node/test/surface_test.js
index d917c7a17121532d4a5e23833f9abb50263e3ca9..395ea887ecb833f733e98b53b3ee649c0649978d 100644
--- a/src/node/test/surface_test.js
+++ b/src/node/test/surface_test.js
@@ -41,7 +41,7 @@ var ProtoBuf = require('protobufjs');
 
 var grpc = require('..');
 
-var math_proto = ProtoBuf.loadProtoFile(__dirname + '/../examples/math.proto');
+var math_proto = ProtoBuf.loadProtoFile(__dirname + '/math/math.proto');
 
 var mathService = math_proto.lookup('math.Math');
 
@@ -163,7 +163,7 @@ describe('waitForClientReady', function() {
     Client = surface_client.makeProtobufClientConstructor(mathService);
   });
   beforeEach(function() {
-    client = new Client('localhost:' + port, grpc.Credentials.createInsecure());
+    client = new Client('localhost:' + port, grpc.credentials.createInsecure());
   });
   after(function() {
     server.forceShutdown();
@@ -217,7 +217,7 @@ describe('Echo service', function() {
     });
     var port = server.bind('localhost:0', server_insecure_creds);
     var Client = surface_client.makeProtobufClientConstructor(echo_service);
-    client = new Client('localhost:' + port, grpc.Credentials.createInsecure());
+    client = new Client('localhost:' + port, grpc.credentials.createInsecure());
     server.start();
   });
   after(function() {
@@ -263,7 +263,7 @@ describe('Generic client and server', function() {
       server.start();
       var Client = grpc.makeGenericClientConstructor(string_service_attrs);
       client = new Client('localhost:' + port,
-                          grpc.Credentials.createInsecure());
+                          grpc.credentials.createInsecure());
     });
     after(function() {
       server.forceShutdown();
@@ -311,7 +311,7 @@ describe('Echo metadata', function() {
     });
     var port = server.bind('localhost:0', server_insecure_creds);
     var Client = surface_client.makeProtobufClientConstructor(test_service);
-    client = new Client('localhost:' + port, grpc.Credentials.createInsecure());
+    client = new Client('localhost:' + port, grpc.credentials.createInsecure());
     server.start();
     metadata = new grpc.Metadata();
     metadata.set('key', 'value');
@@ -356,7 +356,7 @@ describe('Echo metadata', function() {
     call.end();
   });
   it('shows the correct user-agent string', function(done) {
-    var version = require('../package.json').version;
+    var version = require('../../../package.json').version;
     var call = client.unary({}, function(err, data) { assert.ifError(err); },
                             metadata);
     call.on('metadata', function(metadata) {
@@ -437,7 +437,7 @@ describe('Other conditions', function() {
     });
     port = server.bind('localhost:0', server_insecure_creds);
     Client = surface_client.makeProtobufClientConstructor(test_service);
-    client = new Client('localhost:' + port, grpc.Credentials.createInsecure());
+    client = new Client('localhost:' + port, grpc.credentials.createInsecure());
     server.start();
   });
   after(function() {
@@ -484,7 +484,7 @@ describe('Other conditions', function() {
       var Client = surface_client.makeClientConstructor(test_service_attrs,
                                                         'TestService');
       misbehavingClient = new Client('localhost:' + port,
-                                     grpc.Credentials.createInsecure());
+                                     grpc.credentials.createInsecure());
     });
     it('should respond correctly to a unary call', function(done) {
       misbehavingClient.unary(badArg, function(err, data) {
@@ -690,165 +690,187 @@ describe('Other conditions', function() {
       });
     });
   });
-  describe('Call propagation', function() {
-    var proxy;
-    var proxy_impl;
-    beforeEach(function() {
-      proxy = new grpc.Server();
-      proxy_impl = {
-        unary: function(call) {},
-        clientStream: function(stream) {},
-        serverStream: function(stream) {},
-        bidiStream: function(stream) {}
-      };
+});
+describe('Call propagation', function() {
+  var proxy;
+  var proxy_impl;
+
+  var test_service;
+  var Client;
+  var client;
+  var server;
+  before(function() {
+    var test_proto = ProtoBuf.loadProtoFile(__dirname + '/test_service.proto');
+    test_service = test_proto.lookup('TestService');
+    server = new grpc.Server();
+    server.addProtoService(test_service, {
+      unary: function(call) {},
+      clientStream: function(stream) {},
+      serverStream: function(stream) {},
+      bidiStream: function(stream) {}
     });
-    afterEach(function() {
-      console.log('Shutting down server');
-      proxy.forceShutdown();
-    });
-    describe('Cancellation', function() {
-      it('With a unary call', function(done) {
-        done = multiDone(done, 2);
-        proxy_impl.unary = function(parent, callback) {
-          client.unary(parent.request, function(err, value) {
-            try {
-              assert(err);
-              assert.strictEqual(err.code, grpc.status.CANCELLED);
-            } finally {
-              callback(err, value);
-              done();
-            }
-          }, null, {parent: parent});
-          call.cancel();
-        };
-        proxy.addProtoService(test_service, proxy_impl);
-        var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
-        proxy.start();
-        var proxy_client = new Client('localhost:' + proxy_port,
-                                      grpc.Credentials.createInsecure());
-        var call = proxy_client.unary({}, function(err, value) {
-          done();
-        });
-      });
-      it('With a client stream call', function(done) {
-        done = multiDone(done, 2);
-        proxy_impl.clientStream = function(parent, callback) {
-          client.clientStream(function(err, value) {
-            try {
-              assert(err);
-              assert.strictEqual(err.code, grpc.status.CANCELLED);
-            } finally {
-              callback(err, value);
-              done();
-            }
-          }, null, {parent: parent});
-          call.cancel();
-        };
-        proxy.addProtoService(test_service, proxy_impl);
-        var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
-        proxy.start();
-        var proxy_client = new Client('localhost:' + proxy_port,
-                                      grpc.Credentials.createInsecure());
-        var call = proxy_client.clientStream(function(err, value) {
-          done();
-        });
-      });
-      it('With a server stream call', function(done) {
-        done = multiDone(done, 2);
-        proxy_impl.serverStream = function(parent) {
-          var child = client.serverStream(parent.request, null,
-                                          {parent: parent});
-          child.on('error', function(err) {
+    var port = server.bind('localhost:0', server_insecure_creds);
+    Client = surface_client.makeProtobufClientConstructor(test_service);
+    client = new Client('localhost:' + port, grpc.credentials.createInsecure());
+    server.start();
+  });
+  after(function() {
+    server.forceShutdown();
+  });
+  beforeEach(function() {
+    proxy = new grpc.Server();
+    proxy_impl = {
+      unary: function(call) {},
+      clientStream: function(stream) {},
+      serverStream: function(stream) {},
+      bidiStream: function(stream) {}
+    };
+  });
+  afterEach(function() {
+    proxy.forceShutdown();
+  });
+  describe('Cancellation', function() {
+    it('With a unary call', function(done) {
+      done = multiDone(done, 2);
+      proxy_impl.unary = function(parent, callback) {
+        client.unary(parent.request, function(err, value) {
+          try {
             assert(err);
             assert.strictEqual(err.code, grpc.status.CANCELLED);
+          } finally {
+            callback(err, value);
             done();
-          });
-          call.cancel();
-        };
-        proxy.addProtoService(test_service, proxy_impl);
-        var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
-        proxy.start();
-        var proxy_client = new Client('localhost:' + proxy_port,
-                                      grpc.Credentials.createInsecure());
-        var call = proxy_client.serverStream({});
-        call.on('error', function(err) {
-          done();
-        });
+          }
+        }, null, {parent: parent});
+        call.cancel();
+      };
+      proxy.addProtoService(test_service, proxy_impl);
+      var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
+      proxy.start();
+      var proxy_client = new Client('localhost:' + proxy_port,
+                                    grpc.credentials.createInsecure());
+      var call = proxy_client.unary({}, function(err, value) {
+        done();
       });
-      it('With a bidi stream call', function(done) {
-        done = multiDone(done, 2);
-        proxy_impl.bidiStream = function(parent) {
-          var child = client.bidiStream(null, {parent: parent});
-          child.on('error', function(err) {
+    });
+    it('With a client stream call', function(done) {
+      done = multiDone(done, 2);
+      proxy_impl.clientStream = function(parent, callback) {
+        client.clientStream(function(err, value) {
+          try {
             assert(err);
             assert.strictEqual(err.code, grpc.status.CANCELLED);
+          } finally {
+            callback(err, value);
             done();
-          });
-          call.cancel();
-        };
-        proxy.addProtoService(test_service, proxy_impl);
-        var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
-        proxy.start();
-        var proxy_client = new Client('localhost:' + proxy_port,
-                                      grpc.Credentials.createInsecure());
-        var call = proxy_client.bidiStream();
-        call.on('error', function(err) {
+          }
+        }, null, {parent: parent});
+        call.cancel();
+      };
+      proxy.addProtoService(test_service, proxy_impl);
+      var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
+      proxy.start();
+      var proxy_client = new Client('localhost:' + proxy_port,
+                                    grpc.credentials.createInsecure());
+      var call = proxy_client.clientStream(function(err, value) {
+        done();
+      });
+    });
+    it('With a server stream call', function(done) {
+      done = multiDone(done, 2);
+      proxy_impl.serverStream = function(parent) {
+        var child = client.serverStream(parent.request, null,
+                                        {parent: parent});
+        child.on('error', function(err) {
+          assert(err);
+          assert.strictEqual(err.code, grpc.status.CANCELLED);
           done();
         });
+        call.cancel();
+      };
+      proxy.addProtoService(test_service, proxy_impl);
+      var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
+      proxy.start();
+      var proxy_client = new Client('localhost:' + proxy_port,
+                                    grpc.credentials.createInsecure());
+      var call = proxy_client.serverStream({});
+      call.on('error', function(err) {
+        done();
       });
     });
-    describe('Deadline', function() {
-      /* jshint bitwise:false */
-      var deadline_flags = (grpc.propagate.DEFAULTS &
-          ~grpc.propagate.CANCELLATION);
-      it('With a client stream call', function(done) {
-        done = multiDone(done, 2);
-        proxy_impl.clientStream = function(parent, callback) {
-          client.clientStream(function(err, value) {
-            try {
-              assert(err);
-              assert(err.code === grpc.status.DEADLINE_EXCEEDED ||
-                  err.code === grpc.status.INTERNAL);
-            } finally {
-              callback(err, value);
-              done();
-            }
-          }, null, {parent: parent, propagate_flags: deadline_flags});
-        };
-        proxy.addProtoService(test_service, proxy_impl);
-        var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
-        proxy.start();
-        var proxy_client = new Client('localhost:' + proxy_port,
-                                      grpc.Credentials.createInsecure());
-        var deadline = new Date();
-        deadline.setSeconds(deadline.getSeconds() + 1);
-        proxy_client.clientStream(function(err, value) {
+    it('With a bidi stream call', function(done) {
+      done = multiDone(done, 2);
+      proxy_impl.bidiStream = function(parent) {
+        var child = client.bidiStream(null, {parent: parent});
+        child.on('error', function(err) {
+          assert(err);
+          assert.strictEqual(err.code, grpc.status.CANCELLED);
           done();
-        }, null, {deadline: deadline});
-      });
-      it('With a bidi stream call', function(done) {
-        done = multiDone(done, 2);
-        proxy_impl.bidiStream = function(parent) {
-          var child = client.bidiStream(
-              null, {parent: parent, propagate_flags: deadline_flags});
-          child.on('error', function(err) {
+        });
+        call.cancel();
+      };
+      proxy.addProtoService(test_service, proxy_impl);
+      var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
+      proxy.start();
+      var proxy_client = new Client('localhost:' + proxy_port,
+                                    grpc.credentials.createInsecure());
+      var call = proxy_client.bidiStream();
+      call.on('error', function(err) {
+        done();
+      });
+    });
+  });
+  describe('Deadline', function() {
+    /* jshint bitwise:false */
+    var deadline_flags = (grpc.propagate.DEFAULTS &
+        ~grpc.propagate.CANCELLATION);
+    it('With a client stream call', function(done) {
+      done = multiDone(done, 2);
+      proxy_impl.clientStream = function(parent, callback) {
+        client.clientStream(function(err, value) {
+          try {
             assert(err);
             assert(err.code === grpc.status.DEADLINE_EXCEEDED ||
                 err.code === grpc.status.INTERNAL);
+          } finally {
+            callback(err, value);
             done();
-          });
-        };
-        proxy.addProtoService(test_service, proxy_impl);
-        var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
-        proxy.start();
-        var proxy_client = new Client('localhost:' + proxy_port,
-                                      grpc.Credentials.createInsecure());
-        var deadline = new Date();
-        deadline.setSeconds(deadline.getSeconds() + 1);
-        var call = proxy_client.bidiStream(null, {deadline: deadline});
-        call.on('error', function(err) {
+          }
+        }, null, {parent: parent, propagate_flags: deadline_flags});
+      };
+      proxy.addProtoService(test_service, proxy_impl);
+      var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
+      proxy.start();
+      var proxy_client = new Client('localhost:' + proxy_port,
+                                    grpc.credentials.createInsecure());
+      var deadline = new Date();
+      deadline.setSeconds(deadline.getSeconds() + 1);
+      proxy_client.clientStream(function(err, value) {
+        done();
+      }, null, {deadline: deadline});
+    });
+    it('With a bidi stream call', function(done) {
+      done = multiDone(done, 2);
+      proxy_impl.bidiStream = function(parent) {
+        var child = client.bidiStream(
+            null, {parent: parent, propagate_flags: deadline_flags});
+        child.on('error', function(err) {
+          assert(err);
+          assert(err.code === grpc.status.DEADLINE_EXCEEDED ||
+              err.code === grpc.status.INTERNAL);
           done();
         });
+      };
+      proxy.addProtoService(test_service, proxy_impl);
+      var proxy_port = proxy.bind('localhost:0', server_insecure_creds);
+      proxy.start();
+      var proxy_client = new Client('localhost:' + proxy_port,
+                                    grpc.credentials.createInsecure());
+      var deadline = new Date();
+      deadline.setSeconds(deadline.getSeconds() + 1);
+      var call = proxy_client.bidiStream(null, {deadline: deadline});
+      call.on('error', function(err) {
+        done();
       });
     });
   });
@@ -866,7 +888,7 @@ describe('Cancelling surface client', function() {
     });
     var port = server.bind('localhost:0', server_insecure_creds);
     var Client = surface_client.makeProtobufClientConstructor(mathService);
-    client = new Client('localhost:' + port, grpc.Credentials.createInsecure());
+    client = new Client('localhost:' + port, grpc.credentials.createInsecure());
     server.start();
   });
   after(function() {
diff --git a/src/objective-c/RxLibrary/GRXWriter.m b/src/objective-c/RxLibrary/GRXWriter.m
index 019fcbd7858320819cb9648dde98f62ccb4874e8..fee33f5556343ff062b73d4bb39563ac255b036e 100644
--- a/src/objective-c/RxLibrary/GRXWriter.m
+++ b/src/objective-c/RxLibrary/GRXWriter.m
@@ -35,4 +35,14 @@
 
 @implementation GRXWriter
 
+- (void)startWithWriteable:(id<GRXWriteable>)writeable {
+  NSAssert(NO, @"Missing base implementation for %@", NSStringFromSelector(_cmd));
+  [self doesNotRecognizeSelector:_cmd];
+}
+
+- (void)finishWithError:(NSError *)errorOrNil {
+  NSAssert(NO, @"Missing base implementation for %@", NSStringFromSelector(_cmd));
+  [self doesNotRecognizeSelector:_cmd];
+}
+
 @end
diff --git a/src/objective-c/tests/run_tests.sh b/src/objective-c/tests/run_tests.sh
index 7b133c1782b305bea43042e0181e6c698e384adb..598f4e7fa1da328eaccc4c21442ace311188342b 100755
--- a/src/objective-c/tests/run_tests.sh
+++ b/src/objective-c/tests/run_tests.sh
@@ -37,7 +37,7 @@ cd $(dirname $0)
 
 # Run the tests server.
 ../../../bins/$CONFIG/interop_server --port=5050 &
-../../../bins/$CONFIG/interop_server --port=5051 --enable_ssl &
+../../../bins/$CONFIG/interop_server --port=5051 --use_tls &
 # Kill them when this script exits.
 trap 'kill -9 `jobs -p`' EXIT
 
diff --git a/src/php/bin/interop_client.sh b/src/php/bin/interop_client.sh
index 17b888dd4edb45ec02e71de46c3d6671081c3330..2af49cd8922073296a19c546e778d16312c9fbae 100755
--- a/src/php/bin/interop_client.sh
+++ b/src/php/bin/interop_client.sh
@@ -31,5 +31,5 @@
 set -e
 cd $(dirname $0)
 source ./determine_extension_dir.sh
-php $extension_dir \
+php $extension_dir -d max_execution_time=300 \
   ../tests/interop/interop_client.php $@ 1>&2
diff --git a/src/php/bin/run_gen_code_test.sh b/src/php/bin/run_gen_code_test.sh
index 6e56c7207c21577694e8cc53e0e600bd9d62c1f4..5dfebb42b6365b565935b5c6aaf313a6f63dc0e7 100755
--- a/src/php/bin/run_gen_code_test.sh
+++ b/src/php/bin/run_gen_code_test.sh
@@ -32,7 +32,7 @@ set -e
 cd $(dirname $0)
 source ./determine_extension_dir.sh
 export GRPC_TEST_HOST=localhost:50051
-php $extension_dir $(which phpunit) -v --debug --strict \
+php $extension_dir -d max_execution_time=300 $(which phpunit) -v --debug --strict \
   ../tests/generated_code/GeneratedCodeTest.php
-php $extension_dir $(which phpunit) -v --debug --strict \
+php $extension_dir -d max_execution_time=300 $(which phpunit) -v --debug --strict \
   ../tests/generated_code/GeneratedCodeWithCallbackTest.php
diff --git a/src/php/bin/run_tests.sh b/src/php/bin/run_tests.sh
index 1fe68cdab4b05f41a2b557e20a045b2826993852..5adc77879a2670db3f203fe9fabf855ea7ccca7e 100755
--- a/src/php/bin/run_tests.sh
+++ b/src/php/bin/run_tests.sh
@@ -37,5 +37,5 @@ cd src/php/bin
 source ./determine_extension_dir.sh
 # in some jenkins macos machine, somehow the PHP build script can't find libgrpc.dylib
 export DYLD_LIBRARY_PATH=$root/libs/$config
-php $extension_dir $(which phpunit) -v --debug --strict \
+php $extension_dir -d max_execution_time=300 $(which phpunit) -v --debug --strict \
   ../tests/unit_tests
diff --git a/src/php/ext/grpc/package.xml b/src/php/ext/grpc/package.xml
index 381ae23b455e37fa02f3605163bd7bacd7bc0d18..f41902f041eb278b7e02d18a1b8ad1e895ab4387 100644
--- a/src/php/ext/grpc/package.xml
+++ b/src/php/ext/grpc/package.xml
@@ -10,8 +10,8 @@
   <email>grpc-packages@google.com</email>
   <active>yes</active>
  </lead>
- <date>2015-09-01</date>
- <time>13:37:33</time>
+ <date>2015-09-24</date>
+ <time>09:51:04</time>
  <version>
   <release>0.6.0</release>
   <api>0.6.0</api>
@@ -22,12 +22,12 @@
  </stability>
  <license>BSD</license>
  <notes>
- - support per message compression disable
- - expose per-call host override option
- - expose connectivity API
- - expose channel target and call peer
- - add user-agent
- - update to wrap gRPC C core library beta version 0.11.0
+- support per message compression disable
+- expose per-call host override option
+- expose connectivity API
+- expose channel target and call peer
+- add user-agent
+- update to wrap gRPC C core library beta version 0.11.0
  </notes>
  <contents>
   <dir baseinstalldir="/" name="/">
@@ -46,7 +46,7 @@
    <file baseinstalldir="/" md5sum="3f35b472bbdef5a788cd90617d7d0847" name="LICENSE" role="doc" />
    <file baseinstalldir="/" md5sum="6a550516a1423def0786851c76f87c85" name="php_grpc.c" role="src" />
    <file baseinstalldir="/" md5sum="673b07859d9f69232f8a754c56780686" name="php_grpc.h" role="src" />
-   <file baseinstalldir="/" md5sum="c1d0b42fd77b7d6740bf7744bee90af5" name="README.md" role="doc" />
+   <file baseinstalldir="/" md5sum="7533a6d3ea02c78cad23a9651de0825d" name="README.md" role="doc" />
    <file baseinstalldir="/" md5sum="3e4e960454ebb2fc7b78a840493f5315" name="server.c" role="src" />
    <file baseinstalldir="/" md5sum="4b730f06d14cbbb0642bdbd194749595" name="server.h" role="src" />
    <file baseinstalldir="/" md5sum="34ea881f1fe960d190d0713422cf8916" name="server_credentials.c" role="src" />
@@ -107,15 +107,15 @@ Update to wrap gRPC C Core version 0.10.0
     <release>beta</release>
     <api>beta</api>
    </stability>
-   <date>2015-09-01</date>
+   <date>2015-09-24</date>
    <license>BSD</license>
    <notes>
- - support per message compression disable
- - expose per-call host override option
- - expose connectivity API
- - expose channel target and call peer
- - add user-agent
- - update to wrap gRPC C core library beta version 0.11.0
+- support per message compression disable
+- expose per-call host override option
+- expose connectivity API
+- expose channel target and call peer
+- add user-agent
+- update to wrap gRPC C core library beta version 0.11.0
    </notes>
   </release>
  </changelog>
diff --git a/src/php/ext/grpc/php_grpc.c b/src/php/ext/grpc/php_grpc.c
index 0f730ea7567724b103f9535f8dadd9a1ec4d07d9..4ad78ea0a31225264b1edcd122b0f684f850c8b9 100644
--- a/src/php/ext/grpc/php_grpc.c
+++ b/src/php/ext/grpc/php_grpc.c
@@ -109,91 +109,120 @@ PHP_MINIT_FUNCTION(grpc) {
   */
   /* Register call error constants */
   grpc_init();
-  REGISTER_LONG_CONSTANT("Grpc\\CALL_OK", GRPC_CALL_OK, CONST_CS);
-  REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR", GRPC_CALL_ERROR, CONST_CS);
+  REGISTER_LONG_CONSTANT("Grpc\\CALL_OK", GRPC_CALL_OK,
+                         CONST_CS | CONST_PERSISTENT);
+  REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR", GRPC_CALL_ERROR,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR_NOT_ON_SERVER",
-                         GRPC_CALL_ERROR_NOT_ON_SERVER, CONST_CS);
+                         GRPC_CALL_ERROR_NOT_ON_SERVER,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR_NOT_ON_CLIENT",
-                         GRPC_CALL_ERROR_NOT_ON_CLIENT, CONST_CS);
+                         GRPC_CALL_ERROR_NOT_ON_CLIENT,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR_ALREADY_INVOKED",
-                         GRPC_CALL_ERROR_ALREADY_INVOKED, CONST_CS);
+                         GRPC_CALL_ERROR_ALREADY_INVOKED,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR_NOT_INVOKED",
-                         GRPC_CALL_ERROR_NOT_INVOKED, CONST_CS);
+                         GRPC_CALL_ERROR_NOT_INVOKED,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR_ALREADY_FINISHED",
-                         GRPC_CALL_ERROR_ALREADY_FINISHED, CONST_CS);
+                         GRPC_CALL_ERROR_ALREADY_FINISHED,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR_TOO_MANY_OPERATIONS",
-                         GRPC_CALL_ERROR_TOO_MANY_OPERATIONS, CONST_CS);
+                         GRPC_CALL_ERROR_TOO_MANY_OPERATIONS,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR_INVALID_FLAGS",
-                         GRPC_CALL_ERROR_INVALID_FLAGS, CONST_CS);
+                         GRPC_CALL_ERROR_INVALID_FLAGS,
+                         CONST_CS | CONST_PERSISTENT);
 
   /* Register flag constants */
   REGISTER_LONG_CONSTANT("Grpc\\WRITE_BUFFER_HINT", GRPC_WRITE_BUFFER_HINT,
-                         CONST_CS);
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\WRITE_NO_COMPRESS", GRPC_WRITE_NO_COMPRESS,
-                         CONST_CS);
+                         CONST_CS | CONST_PERSISTENT);
 
   /* Register status constants */
-  REGISTER_LONG_CONSTANT("Grpc\\STATUS_OK", GRPC_STATUS_OK, CONST_CS);
+  REGISTER_LONG_CONSTANT("Grpc\\STATUS_OK", GRPC_STATUS_OK,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_CANCELLED", GRPC_STATUS_CANCELLED,
-                         CONST_CS);
-  REGISTER_LONG_CONSTANT("Grpc\\STATUS_UNKNOWN", GRPC_STATUS_UNKNOWN, CONST_CS);
+                         CONST_CS | CONST_PERSISTENT);
+  REGISTER_LONG_CONSTANT("Grpc\\STATUS_UNKNOWN", GRPC_STATUS_UNKNOWN,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_INVALID_ARGUMENT",
-                         GRPC_STATUS_INVALID_ARGUMENT, CONST_CS);
+                         GRPC_STATUS_INVALID_ARGUMENT,
+                        CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_DEADLINE_EXCEEDED",
-                         GRPC_STATUS_DEADLINE_EXCEEDED, CONST_CS);
+                         GRPC_STATUS_DEADLINE_EXCEEDED,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_NOT_FOUND", GRPC_STATUS_NOT_FOUND,
-                         CONST_CS);
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_ALREADY_EXISTS",
-                         GRPC_STATUS_ALREADY_EXISTS, CONST_CS);
+                         GRPC_STATUS_ALREADY_EXISTS,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_PERMISSION_DENIED",
-                         GRPC_STATUS_PERMISSION_DENIED, CONST_CS);
+                         GRPC_STATUS_PERMISSION_DENIED,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_UNAUTHENTICATED",
-                         GRPC_STATUS_UNAUTHENTICATED, CONST_CS);
+                         GRPC_STATUS_UNAUTHENTICATED,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_RESOURCE_EXHAUSTED",
-                         GRPC_STATUS_RESOURCE_EXHAUSTED, CONST_CS);
+                         GRPC_STATUS_RESOURCE_EXHAUSTED,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_FAILED_PRECONDITION",
-                         GRPC_STATUS_FAILED_PRECONDITION, CONST_CS);
-  REGISTER_LONG_CONSTANT("Grpc\\STATUS_ABORTED", GRPC_STATUS_ABORTED, CONST_CS);
+                         GRPC_STATUS_FAILED_PRECONDITION,
+                         CONST_CS | CONST_PERSISTENT);
+  REGISTER_LONG_CONSTANT("Grpc\\STATUS_ABORTED", GRPC_STATUS_ABORTED,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_OUT_OF_RANGE", GRPC_STATUS_OUT_OF_RANGE,
-                         CONST_CS);
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_UNIMPLEMENTED",
-                         GRPC_STATUS_UNIMPLEMENTED, CONST_CS);
+                         GRPC_STATUS_UNIMPLEMENTED,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_INTERNAL", GRPC_STATUS_INTERNAL,
-                         CONST_CS);
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_UNAVAILABLE", GRPC_STATUS_UNAVAILABLE,
-                         CONST_CS);
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\STATUS_DATA_LOSS", GRPC_STATUS_DATA_LOSS,
-                         CONST_CS);
+                         CONST_CS | CONST_PERSISTENT);
 
   /* Register op type constants */
   REGISTER_LONG_CONSTANT("Grpc\\OP_SEND_INITIAL_METADATA",
-                         GRPC_OP_SEND_INITIAL_METADATA, CONST_CS);
+                         GRPC_OP_SEND_INITIAL_METADATA,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\OP_SEND_MESSAGE",
-                         GRPC_OP_SEND_MESSAGE, CONST_CS);
+                         GRPC_OP_SEND_MESSAGE,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\OP_SEND_CLOSE_FROM_CLIENT",
-                         GRPC_OP_SEND_CLOSE_FROM_CLIENT, CONST_CS);
+                         GRPC_OP_SEND_CLOSE_FROM_CLIENT,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\OP_SEND_STATUS_FROM_SERVER",
-                         GRPC_OP_SEND_STATUS_FROM_SERVER, CONST_CS);
+                         GRPC_OP_SEND_STATUS_FROM_SERVER,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\OP_RECV_INITIAL_METADATA",
-                         GRPC_OP_RECV_INITIAL_METADATA, CONST_CS);
+                         GRPC_OP_RECV_INITIAL_METADATA,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\OP_RECV_MESSAGE",
-                         GRPC_OP_RECV_MESSAGE, CONST_CS);
+                         GRPC_OP_RECV_MESSAGE, CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\OP_RECV_STATUS_ON_CLIENT",
-                         GRPC_OP_RECV_STATUS_ON_CLIENT, CONST_CS);
+                         GRPC_OP_RECV_STATUS_ON_CLIENT,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\OP_RECV_CLOSE_ON_SERVER",
-                         GRPC_OP_RECV_CLOSE_ON_SERVER, CONST_CS);
+                         GRPC_OP_RECV_CLOSE_ON_SERVER,
+                         CONST_CS | CONST_PERSISTENT);
 
   /* Register connectivity state constants */
   REGISTER_LONG_CONSTANT("Grpc\\CHANNEL_IDLE",
-                         GRPC_CHANNEL_IDLE, CONST_CS);
+                         GRPC_CHANNEL_IDLE, CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CHANNEL_CONNECTING",
-                         GRPC_CHANNEL_CONNECTING, CONST_CS);
+                         GRPC_CHANNEL_CONNECTING, CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CHANNEL_READY",
-                         GRPC_CHANNEL_READY, CONST_CS);
+                         GRPC_CHANNEL_READY, CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CHANNEL_TRANSIENT_FAILURE",
-                         GRPC_CHANNEL_TRANSIENT_FAILURE, CONST_CS);
+                         GRPC_CHANNEL_TRANSIENT_FAILURE,
+                         CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CHANNEL_FATAL_FAILURE",
-                         GRPC_CHANNEL_FATAL_FAILURE, CONST_CS);
+                         GRPC_CHANNEL_FATAL_FAILURE,
+                         CONST_CS | CONST_PERSISTENT);
 
   grpc_init_call(TSRMLS_C);
   grpc_init_channel(TSRMLS_C);
diff --git a/src/python/grpcio_test/grpc_test/conftest.py b/src/python/grpcio_test/grpc_test/conftest.py
new file mode 100644
index 0000000000000000000000000000000000000000..357320ec64bfd3137491f5fd8f1ad5eacc34c033
--- /dev/null
+++ b/src/python/grpcio_test/grpc_test/conftest.py
@@ -0,0 +1,60 @@
+import types
+import unittest
+
+import pytest
+
+
+class LoadTestsSuiteCollector(pytest.Collector):
+
+  def __init__(self, name, parent, suite):
+    super(LoadTestsSuiteCollector, self).__init__(name, parent=parent)
+    self.suite = suite
+    self.obj = suite
+
+  def collect(self):
+    collected = []
+    for case in self.suite:
+      if isinstance(case, unittest.TestCase):
+        collected.append(LoadTestsCase(case.id(), self, case))
+      elif isinstance(case, unittest.TestSuite):
+        collected.append(
+            LoadTestsSuiteCollector('suite_child_of_mine', self, case))
+    return collected
+
+  def reportinfo(self):
+    return str(self.suite)
+
+
+class LoadTestsCase(pytest.Function):
+
+  def __init__(self, name, parent, item):
+    super(LoadTestsCase, self).__init__(name, parent, callobj=self._item_run)
+    self.item = item
+
+  def _item_run(self):
+    result = unittest.TestResult()
+    self.item(result)
+    if result.failures:
+      test_method, trace = result.failures[0]
+      pytest.fail(trace, False)
+    elif result.errors:
+      test_method, trace = result.errors[0]
+      pytest.fail(trace, False)
+    elif result.skipped:
+      test_method, reason = result.skipped[0]
+      pytest.skip(reason)
+
+
+def pytest_pycollect_makeitem(collector, name, obj):
+  if name == 'load_tests' and isinstance(obj, types.FunctionType):
+    suite = unittest.TestSuite()
+    loader = unittest.TestLoader()
+    pattern = '*'
+    try:
+      # Check that the 'load_tests' object is actually a callable that actually
+      # accepts the arguments expected for the load_tests protocol.
+      suite = obj(loader, suite, pattern)
+    except Exception as e:
+      return None
+    else:
+      return LoadTestsSuiteCollector(name, collector, suite)
diff --git a/src/ruby/README.md b/src/ruby/README.md
index 8c56ceb13525345413c293de8a5c546c632b8dbc..e6ffadcaa93df4c690a1076595852df4445741c5 100644
--- a/src/ruby/README.md
+++ b/src/ruby/README.md
@@ -6,7 +6,7 @@ A Ruby implementation of gRPC.
 Status
 ------
 
-Alpha : Ready for early adopters
+Beta
 
 PREREQUISITES
 -------------
diff --git a/src/ruby/bin/math_server.rb b/src/ruby/bin/math_server.rb
index 562f19731733d4997576a37cbc14105012276332..1ee4c5632d92e8649bd6e74d104167a0109bb021 100755
--- a/src/ruby/bin/math_server.rb
+++ b/src/ruby/bin/math_server.rb
@@ -195,7 +195,7 @@ def main
     s.add_http2_port(options['host'], test_server_creds)
     GRPC.logger.info("... running securely on #{options['host']}")
   else
-    s.add_http2_port(options['host'])
+    s.add_http2_port(options['host'], :this_port_is_insecure)
     GRPC.logger.info("... running insecurely on #{options['host']}")
   end
 
diff --git a/src/ruby/bin/noproto_server.rb b/src/ruby/bin/noproto_server.rb
index 72a57620408870b4f974f1e9be4b4c1e8b72ae4b..66554e26f6ce07e93805a5f0e01f87632ba1e717 100755
--- a/src/ruby/bin/noproto_server.rb
+++ b/src/ruby/bin/noproto_server.rb
@@ -101,7 +101,7 @@ def main
     s.add_http2_port(options['host'], test_server_creds)
     GRPC.logger.info("... running securely on #{options['host']}")
   else
-    s.add_http2_port(options['host'])
+    s.add_http2_port(options['host'], :this_port_is_insecure)
     GRPC.logger.info("... running insecurely on #{options['host']}")
   end
 
diff --git a/src/ruby/grpc.gemspec b/src/ruby/grpc.gemspec
index 093606bb8b062978f4865d2b8e2324709715c7c0..61cf18cf549167c0784a8095d1dfeaec847ca598 100755
--- a/src/ruby/grpc.gemspec
+++ b/src/ruby/grpc.gemspec
@@ -17,9 +17,10 @@ Gem::Specification.new do |s|
   s.requirements << 'libgrpc ~> 0.11.0 needs to be installed'
 
   s.files = %w( Rakefile )
-  s.files += Dir.glob('lib/**/*')
-  s.files += Dir.glob('ext/**/*')
   s.files += Dir.glob('bin/**/*')
+  s.files += Dir.glob('ext/**/*')
+  s.files += Dir.glob('lib/**/*')
+  s.files += Dir.glob('pb/**/*')
   s.test_files = Dir.glob('spec/**/*')
   %w(math noproto).each do |b|
     s.executables += ["#{b}_client.rb", "#{b}_server.rb"]
diff --git a/src/ruby/lib/grpc/generic/client_stub.rb b/src/ruby/lib/grpc/generic/client_stub.rb
index 24ec1793f63e3f8238f162f8bbcf1576f4962630..b8e33ad295ab3c6e556446854346895f2df9189a 100644
--- a/src/ruby/lib/grpc/generic/client_stub.rb
+++ b/src/ruby/lib/grpc/generic/client_stub.rb
@@ -170,14 +170,13 @@ module GRPC
                          deadline: nil,
                          timeout: nil,
                          return_op: false,
-                         parent: parent,
+                         parent: nil,
                          **kw)
       c = new_active_call(method, marshal, unmarshal,
                           deadline: deadline,
                           timeout: timeout,
                           parent: parent)
-      kw_with_jwt_uri = self.class.update_with_jwt_aud_uri(kw, @host, method)
-      md = @update_metadata.nil? ? kw : @update_metadata.call(kw_with_jwt_uri)
+      md = update_metadata(kw, method)
       return c.request_response(req, **md) unless return_op
 
       # return the operation view of the active_call; define #execute as a
@@ -244,8 +243,7 @@ module GRPC
                           deadline: deadline,
                           timeout: timeout,
                           parent: parent)
-      kw_with_jwt_uri = self.class.update_with_jwt_aud_uri(kw, @host, method)
-      md = @update_metadata.nil? ? kw : @update_metadata.call(kw_with_jwt_uri)
+      md = update_metadata(kw, method)
       return c.client_streamer(requests, **md) unless return_op
 
       # return the operation view of the active_call; define #execute as a
@@ -322,8 +320,7 @@ module GRPC
                           deadline: deadline,
                           timeout: timeout,
                           parent: parent)
-      kw_with_jwt_uri = self.class.update_with_jwt_aud_uri(kw, @host, method)
-      md = @update_metadata.nil? ? kw : @update_metadata.call(kw_with_jwt_uri)
+      md = update_metadata(kw, method)
       return c.server_streamer(req, **md, &blk) unless return_op
 
       # return the operation view of the active_call; define #execute
@@ -439,8 +436,7 @@ module GRPC
                           deadline: deadline,
                           timeout: timeout,
                           parent: parent)
-      kw_with_jwt_uri = self.class.update_with_jwt_aud_uri(kw, @host, method)
-      md = @update_metadata.nil? ? kw : @update_metadata.call(kw_with_jwt_uri)
+      md = update_metadata(kw, method)
       return c.bidi_streamer(requests, **md, &blk) unless return_op
 
       # return the operation view of the active_call; define #execute
@@ -454,6 +450,16 @@ module GRPC
 
     private
 
+    def update_metadata(kw, method)
+      return kw if @update_metadata.nil?
+      just_jwt_uri = self.class.update_with_jwt_aud_uri({}, @host, method)
+      updated = @update_metadata.call(just_jwt_uri)
+
+      # keys should be lowercase
+      updated = Hash[updated.each_pair.map { |k, v|  [k.downcase, v] }]
+      kw.merge(updated)
+    end
+
     # Creates a new active stub
     #
     # @param method [string] the method being called.
diff --git a/src/ruby/lib/grpc/version.rb b/src/ruby/lib/grpc/version.rb
index 108c22b25ed433e54e7abb0d7c65a2d6dee8f69d..9acf7a055a6a84903ef740d75013c4c33fa1dfd1 100644
--- a/src/ruby/lib/grpc/version.rb
+++ b/src/ruby/lib/grpc/version.rb
@@ -29,5 +29,5 @@
 
 # GRPC contains the General RPC module.
 module GRPC
-  VERSION = '0.11.0'
+  VERSION = '0.11.1'
 end
diff --git a/src/ruby/pb/test/server.rb b/src/ruby/pb/test/server.rb
index a311bb76e6e62e46a7a27b664f316fc04ec70642..32934f70ad84b0e5ec5d2de085cafbae03a85b1d 100755
--- a/src/ruby/pb/test/server.rb
+++ b/src/ruby/pb/test/server.rb
@@ -187,7 +187,7 @@ def main
     s.add_http2_port(host, test_server_creds)
     GRPC.logger.info("... running securely on #{host}")
   else
-    s.add_http2_port(host)
+    s.add_http2_port(host, :this_port_is_insecure)
     GRPC.logger.info("... running insecurely on #{host}")
   end
   s.handle(TestTarget)
diff --git a/src/ruby/spec/generic/client_stub_spec.rb b/src/ruby/spec/generic/client_stub_spec.rb
index a05433df75ea1893164952b4092f8e88236940b1..c5173aee1d59c62c2d2a462f3596abf4aedee0cf 100644
--- a/src/ruby/spec/generic/client_stub_spec.rb
+++ b/src/ruby/spec/generic/client_stub_spec.rb
@@ -159,6 +159,20 @@ describe 'ClientStub' do
         th.join
       end
 
+      it 'should downcase the keys provided by the metadata updater' do
+        server_port = create_test_server
+        host = "localhost:#{server_port}"
+        th = run_request_response(@sent_msg, @resp, @pass,
+                                  k1: 'downcased-key-v1', k2: 'v2')
+        update_md = proc do |md|
+          md[:K1] = 'downcased-key-v1'
+          md
+        end
+        stub = GRPC::ClientStub.new(host, @cq, update_metadata: update_md)
+        expect(get_response(stub)).to eq(@resp)
+        th.join
+      end
+
       it 'should send a request when configured using an override channel' do
         server_port = create_test_server
         alt_host = "localhost:#{server_port}"
diff --git a/templates/gRPC.podspec.template b/templates/gRPC.podspec.template
index b1de0d7102f3ca90b72201866d29dff7bf903e44..d1b55adabf954d7ca1931c800376a58ae59c443b 100644
--- a/templates/gRPC.podspec.template
+++ b/templates/gRPC.podspec.template
@@ -63,14 +63,16 @@
   %>
   Pod::Spec.new do |s|
     s.name     = 'gRPC'
-    s.version  = '0.11.0'
+    version = '0.11.1'
+    s.version  = version
     s.summary  = 'gRPC client library for iOS/OSX'
     s.homepage = 'http://www.grpc.io'
     s.license  = 'New BSD'
     s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
-  
-    # s.source = { :git => 'https://github.com/grpc/grpc.git',
-    #              :tag => 'release-0_11_0-objectivec-0.11.0' }
+
+    s.source = { :git => 'https://github.com/grpc/grpc.git',
+                 :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}" }
+
   
     s.ios.deployment_target = '7.1'
     s.osx.deployment_target = '10.9'
diff --git a/templates/grpc.gyp.template b/templates/grpc.gyp.template
index 873606202a1d74a80d6b0f5b22f859750b63fe4b..9a7637d8bf48a0e3aab979abaafcdb911043d57d 100644
--- a/templates/grpc.gyp.template
+++ b/templates/grpc.gyp.template
@@ -80,12 +80,17 @@
         '-ldl',
         '-lpthread',
         '-lz'
-      ]
+      ],
+      'direct_dependent_settings': {
+        'include_dirs': [
+          '.',
+          'include'
+        ],
+      }
     },
     'targets': [
       % for lib in libs:
-      # TODO: Add C++ targets
-      % if lib.language == 'c':
+      % if lib.name == 'gpr' or lib.name == 'grpc':
       {
         'target_name': '${lib.name}',
         'product_prefix': 'lib',
@@ -103,23 +108,5 @@
       },
       % endif
       % endfor
-      % for tgt in targets:
-      % if tgt.language == 'c':
-      {
-        'target_name': '${tgt.name}',
-        'type': 'executable',
-        'dependencies': [
-          % for dep in getattr(tgt, 'deps', []):
-          '${dep}',
-          % endfor
-        ],
-        'sources': [
-          % for source in tgt.src:
-          '${source}',
-          % endfor
-        ]
-      },
-      % endif
-      % endfor
     ]
   }
diff --git a/templates/src/core/surface/version.c.template b/templates/src/core/surface/version.c.template
index 3e6840460fa9979226aa921c07d4116d0c7eb885..31a5af99cae723bbd90c31c521057b4d6833768a 100644
--- a/templates/src/core/surface/version.c.template
+++ b/templates/src/core/surface/version.c.template
@@ -38,6 +38,5 @@
   
   #include <grpc/grpc.h>
   
-  const char *grpc_version_string(void) {
-  	return "${settings.version.major}.${settings.version.minor}.${settings.version.micro}.${settings.version.build}";
-  }
+  const char *grpc_version_string(void) { \
+  return "${settings.version.major}.${settings.version.minor}.${settings.version.micro}.${settings.version.build}"; }
diff --git a/test/core/bad_client/bad_client.c b/test/core/bad_client/bad_client.c
index 9c09f00e564696f25e5085562fc280695110c6f8..ed46e7b0093ac7128282beaef4fdd5001b4c9e40 100644
--- a/test/core/bad_client/bad_client.c
+++ b/test/core/bad_client/bad_client.c
@@ -157,9 +157,9 @@ void grpc_run_bad_client_test(grpc_bad_client_server_side_validator validator,
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_server_shutdown_and_notify(a.server, a.cq, NULL);
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 a.cq, NULL, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(a.cq, NULL,
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(a.server);
   grpc_completion_queue_destroy(a.cq);
   gpr_slice_buffer_destroy(&outgoing);
diff --git a/test/core/bad_client/tests/connection_prefix.c b/test/core/bad_client/tests/connection_prefix.c
index ec85211605558d91f637f36966202a41d39f058d..90d37a3735a64119d773842d1d8d5f5e94ad9808 100644
--- a/test/core/bad_client/tests/connection_prefix.c
+++ b/test/core/bad_client/tests/connection_prefix.c
@@ -36,9 +36,9 @@
 
 static void verifier(grpc_server *server, grpc_completion_queue *cq) {
   while (grpc_server_has_open_connections(server)) {
-    GPR_ASSERT(grpc_completion_queue_next(
-                   cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20), NULL)
-                   .type == GRPC_QUEUE_TIMEOUT);
+    GPR_ASSERT(grpc_completion_queue_next(cq,
+                                          GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20),
+                                          NULL).type == GRPC_QUEUE_TIMEOUT);
   }
 }
 
diff --git a/test/core/bad_client/tests/initial_settings_frame.c b/test/core/bad_client/tests/initial_settings_frame.c
index 261fecdaf2ff9f829be0f49983d353f12c79ca9f..827e93b67c70ae1c90cf004d840788d681ec6920 100644
--- a/test/core/bad_client/tests/initial_settings_frame.c
+++ b/test/core/bad_client/tests/initial_settings_frame.c
@@ -38,9 +38,9 @@
 
 static void verifier(grpc_server *server, grpc_completion_queue *cq) {
   while (grpc_server_has_open_connections(server)) {
-    GPR_ASSERT(grpc_completion_queue_next(
-                   cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20), NULL)
-                   .type == GRPC_QUEUE_TIMEOUT);
+    GPR_ASSERT(grpc_completion_queue_next(cq,
+                                          GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20),
+                                          NULL).type == GRPC_QUEUE_TIMEOUT);
   }
 }
 
diff --git a/test/core/channel/channel_stack_test.c b/test/core/channel/channel_stack_test.c
index 2939027891b8b4a1e6589523f9b207d81ee97fda..076a122e20ebbb20cd0fd8374af29194c8e668b9 100644
--- a/test/core/channel/channel_stack_test.c
+++ b/test/core/channel/channel_stack_test.c
@@ -85,11 +85,10 @@ static char *get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
 }
 
 static void test_create_channel_stack(void) {
-  const grpc_channel_filter filter = {call_func,         channel_func,
-                                      sizeof(int),       call_init_func,
-                                      call_destroy_func, sizeof(int),
-                                      channel_init_func, channel_destroy_func,
-                                      get_peer,          "some_test_filter"};
+  const grpc_channel_filter filter = {
+      call_func, channel_func, sizeof(int), call_init_func, call_destroy_func,
+      sizeof(int), channel_init_func, channel_destroy_func, get_peer,
+      "some_test_filter"};
   const grpc_channel_filter *filters = &filter;
   grpc_channel_stack *channel_stack;
   grpc_call_stack *call_stack;
diff --git a/test/core/client_config/lb_policies_test.c b/test/core/client_config/lb_policies_test.c
index b5f75dc3e85b7e797b703bd725fa529ed863222c..a9edf381575e23660d59516406472000828a2dfb 100644
--- a/test/core/client_config/lb_policies_test.c
+++ b/test/core/client_config/lb_policies_test.c
@@ -134,9 +134,9 @@ static void kill_server(const servers_fixture *f, size_t i) {
   gpr_log(GPR_INFO, "KILLING SERVER %d", i);
   GPR_ASSERT(f->servers[i] != NULL);
   grpc_server_shutdown_and_notify(f->servers[i], f->cq, tag(10000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(10000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(10000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->servers[i]);
   f->servers[i] = NULL;
 }
@@ -190,9 +190,9 @@ static void teardown_servers(servers_fixture *f) {
   for (i = 0; i < f->num_servers; i++) {
     if (f->servers[i] == NULL) continue;
     grpc_server_shutdown_and_notify(f->servers[i], f->cq, tag(10000));
-    GPR_ASSERT(grpc_completion_queue_pluck(
-                   f->cq, tag(10000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                   .type == GRPC_OP_COMPLETE);
+    GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(10000),
+                                           GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                           NULL).type == GRPC_OP_COMPLETE);
     grpc_server_destroy(f->servers[i]);
   }
   grpc_completion_queue_shutdown(f->cq);
@@ -307,8 +307,8 @@ int *perform_request(servers_fixture *f, grpc_channel *client,
 
     s_idx = -1;
     while ((ev = grpc_completion_queue_next(
-                f->cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1), NULL))
-               .type != GRPC_QUEUE_TIMEOUT) {
+                f->cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1), NULL)).type !=
+           GRPC_QUEUE_TIMEOUT) {
       read_tag = ((int)(gpr_intptr)ev.tag);
       gpr_log(GPR_DEBUG, "EVENT: success:%d, type:%d, tag:%d iter:%d",
               ev.success, ev.type, read_tag, iter_num);
diff --git a/test/core/end2end/README b/test/core/end2end/README
index 59daec45d008b7e90cc62b8a8db86fb93da0b39a..a18172a7a1db6528c388cb8d11b127f065991008 100644
--- a/test/core/end2end/README
+++ b/test/core/end2end/README
@@ -3,5 +3,5 @@ forms a complete end-to-end test.
 
 To add a new test or fixture:
 - add the code to the relevant directory
-- update gen_build_json.py to reflect the change
+- update gen_build_yaml.py to reflect the change
 - regenerate projects
diff --git a/test/core/end2end/dualstack_socket_test.c b/test/core/end2end/dualstack_socket_test.c
index ca72d71dc1dfdd9a889f71b3a1c17fc37814a31b..e5ee7c4375b23d702c8830b733b02a5aa6df3054 100644
--- a/test/core/end2end/dualstack_socket_test.c
+++ b/test/core/end2end/dualstack_socket_test.c
@@ -249,9 +249,9 @@ void test_connect(const char *server_host, const char *client_host, int port,
 
   /* Destroy server. */
   grpc_server_shutdown_and_notify(server, cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(server);
   grpc_completion_queue_shutdown(cq);
   drain_cq(cq);
diff --git a/test/core/end2end/no_server_test.c b/test/core/end2end/no_server_test.c
index c391003141bb5be2da7ac4f58799454d1ea795b8..775fb221d0ba4b77ad32b230037a8e693978a9b9 100644
--- a/test/core/end2end/no_server_test.c
+++ b/test/core/end2end/no_server_test.c
@@ -88,9 +88,8 @@ int main(int argc, char **argv) {
   GPR_ASSERT(status == GRPC_STATUS_DEADLINE_EXCEEDED);
 
   grpc_completion_queue_shutdown(cq);
-  while (
-      grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL)
-          .type != GRPC_QUEUE_SHUTDOWN)
+  while (grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME),
+                                    NULL).type != GRPC_QUEUE_SHUTDOWN)
     ;
   grpc_completion_queue_destroy(cq);
   grpc_call_destroy(call);
diff --git a/test/core/end2end/tests/bad_hostname.c b/test/core/end2end/tests/bad_hostname.c
index 93e2df1e43b5999671d8ec3c66e6276f1b5bf48b..ca4c1a98054f0c2720cf4664a0f422e0f0e441c5 100644
--- a/test/core/end2end/tests/bad_hostname.c
+++ b/test/core/end2end/tests/bad_hostname.c
@@ -77,9 +77,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/binary_metadata.c b/test/core/end2end/tests/binary_metadata.c
index 21e0bbcc49c60bbb8d5363246787201809297676..58636ac2a27ae334972731cf7878f9d5f244ae5e 100644
--- a/test/core/end2end/tests/binary_metadata.c
+++ b/test/core/end2end/tests/binary_metadata.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/call_creds.c b/test/core/end2end/tests/call_creds.c
index 4e905aafc7a2838402b10102db9e8b022ed8c112..4aeade1336e1f6fac7a90439f0bfaa6192cd86a8 100644
--- a/test/core/end2end/tests/call_creds.c
+++ b/test/core/end2end/tests/call_creds.c
@@ -93,9 +93,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/cancel_after_accept.c b/test/core/end2end/tests/cancel_after_accept.c
index 10e62275ab091675d8c7af69222ebb58891c85d2..d384cd1150488eedf8255921aaf327ad616dd0eb 100644
--- a/test/core/end2end/tests/cancel_after_accept.c
+++ b/test/core/end2end/tests/cancel_after_accept.c
@@ -76,9 +76,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/cancel_after_client_done.c b/test/core/end2end/tests/cancel_after_client_done.c
index 4fed5be5f79157c2446399d9bc73360dd1453d97..e267d80493a006e40081e502bb7e27731f34c62e 100644
--- a/test/core/end2end/tests/cancel_after_client_done.c
+++ b/test/core/end2end/tests/cancel_after_client_done.c
@@ -76,9 +76,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/cancel_after_invoke.c b/test/core/end2end/tests/cancel_after_invoke.c
index 40595e4c7b90346ff29c286f9e022d8adaa4bb41..ef9165ee25b7367cfa509b83d9a9a9bc616cfa9c 100644
--- a/test/core/end2end/tests/cancel_after_invoke.c
+++ b/test/core/end2end/tests/cancel_after_invoke.c
@@ -77,9 +77,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/cancel_before_invoke.c b/test/core/end2end/tests/cancel_before_invoke.c
index c049e0c2d634809949daf5559f167da440e3a18b..ce2b402f1bf068f1130401ca20b54f59fb220553 100644
--- a/test/core/end2end/tests/cancel_before_invoke.c
+++ b/test/core/end2end/tests/cancel_before_invoke.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/cancel_in_a_vacuum.c b/test/core/end2end/tests/cancel_in_a_vacuum.c
index 6c63d7c0ad97bad7b97bf8a99d0e2e4cd9b3ef8e..6c57299e1ac7b1316729baf0fba1e0cd1491f9db 100644
--- a/test/core/end2end/tests/cancel_in_a_vacuum.c
+++ b/test/core/end2end/tests/cancel_in_a_vacuum.c
@@ -76,9 +76,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/census_simple_request.c b/test/core/end2end/tests/census_simple_request.c
index adf855ca60b5a18729352e20a27f12e97e8a50e3..29f52ed35ad6bc3d215663e5cf4b11fc58702f6b 100644
--- a/test/core/end2end/tests/census_simple_request.c
+++ b/test/core/end2end/tests/census_simple_request.c
@@ -66,9 +66,9 @@ static void *tag(gpr_intptr t) { return (void *)t; }
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/channel_connectivity.c b/test/core/end2end/tests/channel_connectivity.c
index 0b7a8a664b146a42536edf14a4296f60b81b3f68..46085bbdaf8bebbf6a71b7cddb97fd4bc38af194 100644
--- a/test/core/end2end/tests/channel_connectivity.c
+++ b/test/core/end2end/tests/channel_connectivity.c
@@ -34,19 +34,50 @@
 #include "test/core/end2end/end2end_tests.h"
 
 #include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 
 #include "test/core/end2end/cq_verifier.h"
 
 static void *tag(gpr_intptr t) { return (void *)t; }
 
+typedef struct {
+  gpr_event started;
+  grpc_channel *channel;
+  grpc_completion_queue *cq;
+} child_events;
+
+static void child_thread(void *arg) {
+  child_events *ce = arg;
+  grpc_event ev;
+  gpr_event_set(&ce->started, (void *)1);
+  gpr_log(GPR_DEBUG, "verifying");
+  ev = grpc_completion_queue_next(ce->cq, gpr_inf_future(GPR_CLOCK_MONOTONIC),
+                                  NULL);
+  GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(ev.tag == tag(1));
+  GPR_ASSERT(ev.success == 0);
+}
+
 static void test_connectivity(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
   grpc_connectivity_state state;
   cq_verifier *cqv = cq_verifier_create(f.cq);
+  child_events ce;
+  gpr_thd_options thdopt = gpr_thd_options_default();
+  gpr_thd_id thdid;
 
   config.init_client(&f, NULL);
 
+  ce.channel = f.client;
+  ce.cq = f.cq;
+  gpr_event_init(&ce.started);
+  gpr_thd_options_set_joinable(&thdopt);
+  GPR_ASSERT(gpr_thd_new(&thdid, child_thread, &ce, &thdopt));
+
+  gpr_event_wait(&ce.started, gpr_inf_future(GPR_CLOCK_MONOTONIC));
+
   /* channels should start life in IDLE, and stay there */
   GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 0) ==
              GRPC_CHANNEL_IDLE);
@@ -55,18 +86,23 @@ static void test_connectivity(grpc_end2end_test_config config) {
              GRPC_CHANNEL_IDLE);
 
   /* start watching for a change */
-  grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_IDLE,
-                                        GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
-                                        f.cq, tag(1));
-  /* nothing should happen */
-  cq_verify_empty(cqv);
+  gpr_log(GPR_DEBUG, "watching");
+  grpc_channel_watch_connectivity_state(
+      f.client, GRPC_CHANNEL_IDLE, gpr_now(GPR_CLOCK_MONOTONIC), f.cq, tag(1));
+
+  /* eventually the child thread completion should trigger */
+  gpr_thd_join(thdid);
 
   /* check that we're still in idle, and start connecting */
   GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 1) ==
              GRPC_CHANNEL_IDLE);
+  /* start watching for a change */
+  grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_IDLE,
+                                        GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
+                                        f.cq, tag(2));
 
   /* and now the watch should trigger */
-  cq_expect_completion(cqv, tag(1), 1);
+  cq_expect_completion(cqv, tag(2), 1);
   cq_verify(cqv);
   state = grpc_channel_check_connectivity_state(f.client, 0);
   GPR_ASSERT(state == GRPC_CHANNEL_TRANSIENT_FAILURE ||
@@ -75,8 +111,8 @@ static void test_connectivity(grpc_end2end_test_config config) {
   /* quickly followed by a transition to TRANSIENT_FAILURE */
   grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_CONNECTING,
                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
-                                        f.cq, tag(2));
-  cq_expect_completion(cqv, tag(2), 1);
+                                        f.cq, tag(3));
+  cq_expect_completion(cqv, tag(3), 1);
   cq_verify(cqv);
   state = grpc_channel_check_connectivity_state(f.client, 0);
   GPR_ASSERT(state == GRPC_CHANNEL_TRANSIENT_FAILURE ||
@@ -93,8 +129,8 @@ static void test_connectivity(grpc_end2end_test_config config) {
      READY is reached */
   while (state != GRPC_CHANNEL_READY) {
     grpc_channel_watch_connectivity_state(
-        f.client, state, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), f.cq, tag(3));
-    cq_expect_completion(cqv, tag(3), 1);
+        f.client, state, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), f.cq, tag(4));
+    cq_expect_completion(cqv, tag(4), 1);
     cq_verify(cqv);
     state = grpc_channel_check_connectivity_state(f.client, 0);
     GPR_ASSERT(state == GRPC_CHANNEL_READY ||
@@ -108,11 +144,11 @@ static void test_connectivity(grpc_end2end_test_config config) {
 
   grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_READY,
                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
-                                        f.cq, tag(4));
+                                        f.cq, tag(5));
 
   grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
 
-  cq_expect_completion(cqv, tag(4), 1);
+  cq_expect_completion(cqv, tag(5), 1);
   cq_expect_completion(cqv, tag(0xdead), 1);
   cq_verify(cqv);
   state = grpc_channel_check_connectivity_state(f.client, 0);
diff --git a/test/core/end2end/tests/compressed_payload.c b/test/core/end2end/tests/compressed_payload.c
index c50eaba8b242aa614d84490fd5f98c36f40080eb..a4614a2aba4b15d7cbfe52fc79b6b2bcfde52d4e 100644
--- a/test/core/end2end/tests/compressed_payload.c
+++ b/test/core/end2end/tests/compressed_payload.c
@@ -80,9 +80,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/default_host.c b/test/core/end2end/tests/default_host.c
index 294dfba53a8bc16c548bbbb196872f72f20adb2f..fc06b8950d5b4382b0df722b1572aea8520a4259 100644
--- a/test/core/end2end/tests/default_host.c
+++ b/test/core/end2end/tests/default_host.c
@@ -77,9 +77,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/empty_batch.c b/test/core/end2end/tests/empty_batch.c
index c93d236a6a755a858dd930547a9d24f0d4edca94..59eb8f18f9661f41ee5559a0c814b344fa61b951 100644
--- a/test/core/end2end/tests/empty_batch.c
+++ b/test/core/end2end/tests/empty_batch.c
@@ -77,9 +77,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/high_initial_seqno.c b/test/core/end2end/tests/high_initial_seqno.c
index 44d6a60c104d1607d79c0a0c0b54cbedb71f37d4..75bb1334397e05597a774ac64cccd8f30e6bdcf1 100644
--- a/test/core/end2end/tests/high_initial_seqno.c
+++ b/test/core/end2end/tests/high_initial_seqno.c
@@ -77,9 +77,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/invoke_large_request.c b/test/core/end2end/tests/invoke_large_request.c
index f79d146da10597eeb1317408cc3edebcf10453af..67cd303fa6cc17297b57d4e3b23b7b42a00b5f71 100644
--- a/test/core/end2end/tests/invoke_large_request.c
+++ b/test/core/end2end/tests/invoke_large_request.c
@@ -73,9 +73,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/large_metadata.c b/test/core/end2end/tests/large_metadata.c
index 87529639a7606d398b2988a6fefe046a63c489e4..75d3f71caea9599d83a9d1a7bd59293df6261d87 100644
--- a/test/core/end2end/tests/large_metadata.c
+++ b/test/core/end2end/tests/large_metadata.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/max_concurrent_streams.c b/test/core/end2end/tests/max_concurrent_streams.c
index 87eb4dd451ea297d660b9e3e65c16b9040e31d3b..bb64200d9e192fb93c91f5fa47d07ccf80f32a3e 100644
--- a/test/core/end2end/tests/max_concurrent_streams.c
+++ b/test/core/end2end/tests/max_concurrent_streams.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/max_message_length.c b/test/core/end2end/tests/max_message_length.c
index 782b9d0f264829a01e28f3310b8160d0aa99fddf..3dad47f37ba5a8f53a73605cc02c8e29ed136189 100644
--- a/test/core/end2end/tests/max_message_length.c
+++ b/test/core/end2end/tests/max_message_length.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/metadata.c b/test/core/end2end/tests/metadata.c
index be7a4f12c2deeb1befefd5364fe29a6ca52c096b..c325d5a37c734c245d674086b87f8fff473229bb 100644
--- a/test/core/end2end/tests/metadata.c
+++ b/test/core/end2end/tests/metadata.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/no_op.c b/test/core/end2end/tests/no_op.c
index 157d0d5349055c87257e4ff5497538383983a534..ec33af78ef4cff94fa14a744490995f249b8e7b7 100644
--- a/test/core/end2end/tests/no_op.c
+++ b/test/core/end2end/tests/no_op.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/payload.c b/test/core/end2end/tests/payload.c
index 0b303268fc614c6b768b6cb60f23ccc057a66c1d..b440fbab212b548e644ec1d481d7690d33aca7f6 100644
--- a/test/core/end2end/tests/payload.c
+++ b/test/core/end2end/tests/payload.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/ping_pong_streaming.c b/test/core/end2end/tests/ping_pong_streaming.c
index 39682d8bc50ca15a9ee3b16cd7e48aaa5204e286..804862ff585a092b56a01e953a779bf0e3954714 100644
--- a/test/core/end2end/tests/ping_pong_streaming.c
+++ b/test/core/end2end/tests/ping_pong_streaming.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/registered_call.c b/test/core/end2end/tests/registered_call.c
index b3156e0248a1033fabe83d594ca444cded57e2c1..eea91e6c3bf73728e1498d116f85236d31e38c94 100644
--- a/test/core/end2end/tests/registered_call.c
+++ b/test/core/end2end/tests/registered_call.c
@@ -77,9 +77,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/request_with_flags.c b/test/core/end2end/tests/request_with_flags.c
index b9cdf5168ceec9cb5d401ecb773833c04707ba89..d7c4cff608b77e3d72dfa82ffd2f77293426f0a5 100644
--- a/test/core/end2end/tests/request_with_flags.c
+++ b/test/core/end2end/tests/request_with_flags.c
@@ -76,9 +76,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/request_with_payload.c b/test/core/end2end/tests/request_with_payload.c
index a323b43ab083d3271758f354dda722baadcfc7d6..56c199baf37b98b5bd7a4d404a8a5c542252be14 100644
--- a/test/core/end2end/tests/request_with_payload.c
+++ b/test/core/end2end/tests/request_with_payload.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/server_finishes_request.c b/test/core/end2end/tests/server_finishes_request.c
index bdc18a5e38161c2950347190ff28ad8c66193068..c77e31bca3fad890aa2c6537bae1fac4e354acf3 100644
--- a/test/core/end2end/tests/server_finishes_request.c
+++ b/test/core/end2end/tests/server_finishes_request.c
@@ -77,9 +77,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/simple_delayed_request.c b/test/core/end2end/tests/simple_delayed_request.c
index 14e0ac8f665eb6e3deebff13e2ddf9e53d00460e..04447f9df4b950ff93f5aa28307479431340efdc 100644
--- a/test/core/end2end/tests/simple_delayed_request.c
+++ b/test/core/end2end/tests/simple_delayed_request.c
@@ -63,9 +63,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/simple_request.c b/test/core/end2end/tests/simple_request.c
index a87464083729273fbf91c98e4452337ecb483c14..e9965a91ba487658778420a07fed6fd3092f335b 100644
--- a/test/core/end2end/tests/simple_request.c
+++ b/test/core/end2end/tests/simple_request.c
@@ -77,9 +77,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/end2end/tests/trailing_metadata.c b/test/core/end2end/tests/trailing_metadata.c
index c040b9fac145b54ff77ec3886012d3292b9b4dc7..306ef7e3aab52e9a50b52d9f46f89ffcd7250f1e 100644
--- a/test/core/end2end/tests/trailing_metadata.c
+++ b/test/core/end2end/tests/trailing_metadata.c
@@ -75,9 +75,9 @@ static void drain_cq(grpc_completion_queue *cq) {
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
-                 .type == GRPC_OP_COMPLETE);
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
diff --git a/test/core/httpcli/format_request_test.c b/test/core/httpcli/format_request_test.c
index 82b2ccb122c22fcd70794b05e57e1286e8cf2fc4..da850049e20dafed7e32a7b11f26b5463b1b760a 100644
--- a/test/core/httpcli/format_request_test.c
+++ b/test/core/httpcli/format_request_test.c
@@ -142,7 +142,8 @@ static void test_format_post_request_content_type_override(void) {
                       "POST /index.html HTTP/1.0\r\n"
                       "Host: example.com\r\n"
                       "Connection: close\r\n"
-                      "User-Agent: " GRPC_HTTPCLI_USER_AGENT "\r\n"
+                      "User-Agent: " GRPC_HTTPCLI_USER_AGENT
+                      "\r\n"
                       "x-yz: abc\r\n"
                       "Content-Type: application/x-www-form-urlencoded\r\n"
                       "Content-Length: 11\r\n"
diff --git a/test/core/iomgr/udp_server_test.c b/test/core/iomgr/udp_server_test.c
index 6d3dfeeb57c7ae953cb5200b02283f4f9347a645..86e8767937825dcd16e4606091a117446b9b3dd8 100644
--- a/test/core/iomgr/udp_server_test.c
+++ b/test/core/iomgr/udp_server_test.c
@@ -49,12 +49,13 @@ static grpc_pollset g_pollset;
 static int g_number_of_reads = 0;
 static int g_number_of_bytes_read = 0;
 
-static void on_read(int fd, grpc_server *server) {
+static void on_read(grpc_exec_ctx *exec_ctx, grpc_fd *emfd,
+                    grpc_server *server) {
   char read_buffer[512];
   ssize_t byte_count;
 
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
-  byte_count = recv(fd, read_buffer, sizeof(read_buffer), 0);
+  byte_count = recv(emfd->fd, read_buffer, sizeof(read_buffer), 0);
 
   g_number_of_reads++;
   g_number_of_bytes_read += (int)byte_count;
diff --git a/test/core/json/json_test.c b/test/core/json/json_test.c
index 8575331cabd69229a31f45f6d3e9e4bc1385d1d3..15019913da3795c4fbbf485c6847923decdece35 100644
--- a/test/core/json/json_test.c
+++ b/test/core/json/json_test.c
@@ -66,7 +66,7 @@ static testing_pair testing_pairs[] = {
     {"\"\\ud834\\udd1e\"", "\"\\ud834\\udd1e\""},
     /* Testing nested empty containers. */
     {
-        " [ [ ] , { } , [ ] ] ", "[[],{},[]]",
+     " [ [ ] , { } , [ ] ] ", "[[],{},[]]",
     },
     /* Testing escapes and control chars in key strings. */
     {" { \"\x7f\\n\\\\a , b\": 1, \"\": 0 } ",
diff --git a/test/core/statistics/hash_table_test.c b/test/core/statistics/hash_table_test.c
index 453755f40a46e431b6bceb45e6d976ee3a72c8f6..efebd790f23ac90224e32d3550d2e884e47c9982 100644
--- a/test/core/statistics/hash_table_test.c
+++ b/test/core/statistics/hash_table_test.c
@@ -65,8 +65,8 @@ static void free_data(void *data) { gpr_free(data); }
 static void test_create_table(void) {
   /* Create table with uint64 key type */
   census_ht *ht = NULL;
-  census_ht_option ht_options = {
-      CENSUS_HT_UINT64, 1999, NULL, NULL, NULL, NULL};
+  census_ht_option ht_options = {CENSUS_HT_UINT64, 1999, NULL, NULL, NULL,
+                                 NULL};
   ht = census_ht_create(&ht_options);
   GPR_ASSERT(ht != NULL);
   GPR_ASSERT(census_ht_get_size(ht) == 0);
@@ -120,8 +120,8 @@ static void test_table_with_int_key(void) {
 
 /* Test that there is no memory leak when keys and values are owned by table. */
 static void test_value_and_key_deleter(void) {
-  census_ht_option opt = {CENSUS_HT_POINTER, 7,          &hash64,
-                          &cmp_str_keys,     &free_data, &free_data};
+  census_ht_option opt = {CENSUS_HT_POINTER, 7, &hash64, &cmp_str_keys,
+                          &free_data, &free_data};
   census_ht *ht = census_ht_create(&opt);
   census_ht_key key;
   char *val = NULL;
@@ -185,8 +185,8 @@ static void test_simple_add_and_erase(void) {
 }
 
 static void test_insertion_and_deletion_with_high_collision_rate(void) {
-  census_ht_option opt = {CENSUS_HT_POINTER, 13,   &force_collision,
-                          &cmp_str_keys,     NULL, NULL};
+  census_ht_option opt = {CENSUS_HT_POINTER, 13, &force_collision,
+                          &cmp_str_keys, NULL, NULL};
   census_ht *ht = census_ht_create(&opt);
   char key_str[1000][GPR_LTOA_MIN_BUFSIZE];
   gpr_uint64 val = 0;
@@ -209,12 +209,12 @@ static void test_insertion_and_deletion_with_high_collision_rate(void) {
 }
 
 static void test_table_with_string_key(void) {
-  census_ht_option opt = {CENSUS_HT_POINTER, 7,    &hash64,
-                          &cmp_str_keys,     NULL, NULL};
+  census_ht_option opt = {CENSUS_HT_POINTER, 7, &hash64, &cmp_str_keys, NULL,
+                          NULL};
   census_ht *ht = census_ht_create(&opt);
-  const char *keys[] = {
-      "k1", "a",   "000", "apple", "banana_a_long_long_long_banana",
-      "%$", "111", "foo", "b"};
+  const char *keys[] = {"k1", "a", "000", "apple",
+                        "banana_a_long_long_long_banana", "%$", "111", "foo",
+                        "b"};
   const int vals[] = {0, 1, 2, 3, 4, 5, 6, 7, 8};
   int i = 0;
   GPR_ASSERT(ht != NULL);
diff --git a/test/core/util/port_posix.c b/test/core/util/port_posix.c
index 887079e0f8adfef7db358eaeb81f6f296ee8eb51..0a50660586a2b8d6838d44f89afed6d24a2e8ffc 100644
--- a/test/core/util/port_posix.c
+++ b/test/core/util/port_posix.c
@@ -213,15 +213,25 @@ static void got_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
   size_t i;
   int port = 0;
   portreq *pr = arg;
+  int failed = 0;
+
+  if (!response) {
+    failed = 1;
+    gpr_log(GPR_DEBUG,
+            "failed port pick from server: retrying [response=NULL]");
+  } else if (response->status != 200) {
+    failed = 1;
+    gpr_log(GPR_DEBUG, "failed port pick from server: status=%d",
+            response->status);
+  }
 
-  if (!response || response->status != 200) {
+  if (failed) {
     grpc_httpcli_request req;
     memset(&req, 0, sizeof(req));
     GPR_ASSERT(pr->retries < 10);
     pr->retries++;
     req.host = pr->server;
     req.path = "/get";
-    gpr_log(GPR_DEBUG, "failed port pick from server: retrying");
     sleep(1);
     grpc_httpcli_get(exec_ctx, pr->ctx, &pr->pollset, &req,
                      GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10), got_port_from_server,
diff --git a/test/core/util/test_config.c b/test/core/util/test_config.c
index 30caf4b1ef858d6e1a5db9cfba54642fe73644a3..84b376ad3e161627c716a5d97004918d2b60639b 100644
--- a/test/core/util/test_config.c
+++ b/test/core/util/test_config.c
@@ -35,6 +35,7 @@
 
 #include <grpc/support/port_platform.h>
 #include <grpc/support/log.h>
+#include "src/core/support/string.h"
 #include <stdlib.h>
 #include <signal.h>
 
@@ -88,25 +89,43 @@ static void install_crash_handler() {
 #include <stdio.h>
 #include <string.h>
 #include <grpc/support/useful.h>
+#include <errno.h>
 
 static char g_alt_stack[MINSIGSTKSZ];
 
 #define MAX_FRAMES 32
 
+/* signal safe output */
+static void output_string(const char *string) {
+  size_t len = strlen(string);
+  ssize_t r;
+
+  do {
+    r = write(STDERR_FILENO, string, len);
+  } while (r == -1 && errno == EINTR);
+}
+
+static void output_num(long num) {
+  char buf[GPR_LTOA_MIN_BUFSIZE];
+  gpr_ltoa(num, buf);
+  output_string(buf);
+}
+
 static void crash_handler(int signum, siginfo_t *info, void *data) {
   void *addrlist[MAX_FRAMES + 1];
   int addrlen;
-  int i;
-  char **symlist;
 
-  fprintf(stderr, "Caught signal %d\n", signum);
+  output_string("\n\n\n*******************************\nCaught signal ");
+  output_num(signum);
+  output_string("\n");
+
   addrlen = backtrace(addrlist, GPR_ARRAY_SIZE(addrlist));
 
-  symlist = backtrace_symbols(addrlist, addrlen);
-  for (i = 0; i < addrlen; i++) {
-    fprintf(stderr, "  %s\n", symlist[i]);
+  if (addrlen == 0) {
+    output_string("  no backtrace\n");
+  } else {
+    backtrace_symbols_fd(addrlist, addrlen, STDERR_FILENO);
   }
-  free(symlist);
 
   raise(signum);
 }
@@ -114,6 +133,7 @@ static void crash_handler(int signum, siginfo_t *info, void *data) {
 static void install_crash_handler() {
   stack_t ss;
   struct sigaction sa;
+
   memset(&ss, 0, sizeof(ss));
   memset(&sa, 0, sizeof(sa));
   ss.ss_size = sizeof(g_alt_stack);
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 2659b0e2132f3435d8372021f6eec00df2a72eb8..89a556c5877ba8a7e923eb7a300992d242acacba 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -62,7 +62,6 @@ using std::chrono::system_clock;
 
 namespace grpc {
 namespace testing {
-
 namespace {
 
 const char* kServerCancelAfterReads = "cancel_after_reads";
@@ -194,9 +193,6 @@ class TestAuthMetadataProcessor : public AuthMetadataProcessor {
 const char TestAuthMetadataProcessor::kGoodGuy[] = "Dr Jekyll";
 const char TestAuthMetadataProcessor::kIdentityPropName[] = "novel identity";
 
-
-}  // namespace
-
 class Proxy : public ::grpc::cpp::test::util::TestService::Service {
  public:
   Proxy(std::shared_ptr<Channel> channel)
@@ -262,7 +258,8 @@ class TestServiceImpl : public ::grpc::cpp::test::util::TestService::Service {
     if (request->has_param() &&
         (request->param().expected_client_identity().length() > 0 ||
          request->param().check_auth_context())) {
-      CheckServerAuthContext(context, request->param().expected_client_identity());
+      CheckServerAuthContext(context,
+                             request->param().expected_client_identity());
     }
     if (request->has_param() &&
         request->param().response_message_length() > 0) {
@@ -353,14 +350,24 @@ class TestServiceImplDupPkg
   }
 };
 
-/* Param is whether or not to use a proxy -- some tests use TEST_F as they don't
-   need this functionality */
-class End2endTest : public ::testing::TestWithParam<bool> {
+class TestScenario {
+ public:
+  TestScenario(bool proxy, bool tls) : use_proxy(proxy), use_tls(tls) {}
+  void Log() const {
+    gpr_log(GPR_INFO, "Scenario: proxy %d, tls %d", use_proxy, use_tls);
+  }
+  bool use_proxy;
+  bool use_tls;
+};
+
+class End2endTest : public ::testing::TestWithParam<TestScenario> {
  protected:
   End2endTest()
       : is_server_started_(false),
         kMaxMessageSize_(8192),
-        special_service_("special") {}
+        special_service_("special") {
+    GetParam().Log();
+  }
 
   void TearDown() GRPC_OVERRIDE {
     if (is_server_started_) {
@@ -374,13 +381,16 @@ class End2endTest : public ::testing::TestWithParam<bool> {
     server_address_ << "127.0.0.1:" << port;
     // Setup server
     ServerBuilder builder;
-    SslServerCredentialsOptions::PemKeyCertPair pkcp = {test_server1_key,
-                                                        test_server1_cert};
-    SslServerCredentialsOptions ssl_opts;
-    ssl_opts.pem_root_certs = "";
-    ssl_opts.pem_key_cert_pairs.push_back(pkcp);
-    auto server_creds = SslServerCredentials(ssl_opts);
-    server_creds->SetAuthMetadataProcessor(processor);
+    auto server_creds = InsecureServerCredentials();
+    if (GetParam().use_tls) {
+      SslServerCredentialsOptions::PemKeyCertPair pkcp = {test_server1_key,
+                                                          test_server1_cert};
+      SslServerCredentialsOptions ssl_opts;
+      ssl_opts.pem_root_certs = "";
+      ssl_opts.pem_key_cert_pairs.push_back(pkcp);
+      server_creds = SslServerCredentials(ssl_opts);
+      server_creds->SetAuthMetadataProcessor(processor);
+    }
     builder.AddListeningPort(server_address_.str(), server_creds);
     builder.RegisterService(&service_);
     builder.RegisterService("foo.test.youtube.com", &special_service_);
@@ -396,17 +406,20 @@ class End2endTest : public ::testing::TestWithParam<bool> {
       StartServer(std::shared_ptr<AuthMetadataProcessor>());
     }
     EXPECT_TRUE(is_server_started_);
-    SslCredentialsOptions ssl_opts = {test_root_cert, "", ""};
     ChannelArguments args;
-    args.SetSslTargetNameOverride("foo.test.google.fr");
+    auto channel_creds = InsecureCredentials();
+    if (GetParam().use_tls) {
+      SslCredentialsOptions ssl_opts = {test_root_cert, "", ""};
+      args.SetSslTargetNameOverride("foo.test.google.fr");
+      channel_creds = SslCredentials(ssl_opts);
+    }
     args.SetString(GRPC_ARG_SECONDARY_USER_AGENT_STRING, "end2end_test");
-    channel_ = CreateCustomChannel(server_address_.str(),
-                                   SslCredentials(ssl_opts), args);
+    channel_ = CreateCustomChannel(server_address_.str(), channel_creds, args);
   }
 
-  void ResetStub(bool use_proxy) {
+  void ResetStub() {
     ResetChannel();
-    if (use_proxy) {
+    if (GetParam().use_proxy) {
       proxy_service_.reset(new Proxy(channel_));
       int port = grpc_pick_unused_port_or_die();
       std::ostringstream proxyaddr;
@@ -450,124 +463,8 @@ static void SendRpc(grpc::cpp::test::util::TestService::Stub* stub,
   }
 }
 
-TEST_F(End2endTest, SimpleRpcWithHost) {
-  ResetStub(false);
-
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("Hello");
-
-  ClientContext context;
-  context.set_authority("foo.test.youtube.com");
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(response.message(), request.message());
-  EXPECT_TRUE(response.has_param());
-  EXPECT_EQ("special", response.param().host());
-  EXPECT_TRUE(s.ok());
-}
-
-TEST_P(End2endTest, SimpleRpc) {
-  ResetStub(GetParam());
-  SendRpc(stub_.get(), 1);
-}
-
-TEST_P(End2endTest, MultipleRpcs) {
-  ResetStub(GetParam());
-  std::vector<std::thread*> threads;
-  for (int i = 0; i < 10; ++i) {
-    threads.push_back(new std::thread(SendRpc, stub_.get(), 10));
-  }
-  for (int i = 0; i < 10; ++i) {
-    threads[i]->join();
-    delete threads[i];
-  }
-}
-
-// Set a 10us deadline and make sure proper error is returned.
-TEST_P(End2endTest, RpcDeadlineExpires) {
-  ResetStub(GetParam());
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("Hello");
-
-  ClientContext context;
-  std::chrono::system_clock::time_point deadline =
-      std::chrono::system_clock::now() + std::chrono::microseconds(10);
-  context.set_deadline(deadline);
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(StatusCode::DEADLINE_EXCEEDED, s.error_code());
-}
-
-// Set a long but finite deadline.
-TEST_P(End2endTest, RpcLongDeadline) {
-  ResetStub(GetParam());
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("Hello");
-
-  ClientContext context;
-  std::chrono::system_clock::time_point deadline =
-      std::chrono::system_clock::now() + std::chrono::hours(1);
-  context.set_deadline(deadline);
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(response.message(), request.message());
-  EXPECT_TRUE(s.ok());
-}
-
-// Ask server to echo back the deadline it sees.
-TEST_P(End2endTest, EchoDeadline) {
-  ResetStub(GetParam());
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("Hello");
-  request.mutable_param()->set_echo_deadline(true);
-
-  ClientContext context;
-  std::chrono::system_clock::time_point deadline =
-      std::chrono::system_clock::now() + std::chrono::seconds(100);
-  context.set_deadline(deadline);
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(response.message(), request.message());
-  EXPECT_TRUE(s.ok());
-  gpr_timespec sent_deadline;
-  Timepoint2Timespec(deadline, &sent_deadline);
-  // Allow 1 second error.
-  EXPECT_LE(response.param().request_deadline() - sent_deadline.tv_sec, 1);
-  EXPECT_GE(response.param().request_deadline() - sent_deadline.tv_sec, -1);
-}
-
-// Ask server to echo back the deadline it sees. The rpc has no deadline.
-TEST_P(End2endTest, EchoDeadlineForNoDeadlineRpc) {
-  ResetStub(GetParam());
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("Hello");
-  request.mutable_param()->set_echo_deadline(true);
-
-  ClientContext context;
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(response.message(), request.message());
-  EXPECT_TRUE(s.ok());
-  EXPECT_EQ(response.param().request_deadline(),
-            gpr_inf_future(GPR_CLOCK_REALTIME).tv_sec);
-}
-
-TEST_P(End2endTest, UnimplementedRpc) {
-  ResetStub(GetParam());
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("Hello");
-
-  ClientContext context;
-  Status s = stub_->Unimplemented(&context, request, &response);
-  EXPECT_FALSE(s.ok());
-  EXPECT_EQ(s.error_code(), grpc::StatusCode::UNIMPLEMENTED);
-  EXPECT_EQ(s.error_message(), "");
-  EXPECT_EQ(response.message(), "");
-}
-
-TEST_F(End2endTest, RequestStreamOneRequest) {
-  ResetStub(false);
+TEST_P(End2endTest, RequestStreamOneRequest) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -581,8 +478,8 @@ TEST_F(End2endTest, RequestStreamOneRequest) {
   EXPECT_TRUE(s.ok());
 }
 
-TEST_F(End2endTest, RequestStreamTwoRequests) {
-  ResetStub(false);
+TEST_P(End2endTest, RequestStreamTwoRequests) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -597,8 +494,8 @@ TEST_F(End2endTest, RequestStreamTwoRequests) {
   EXPECT_TRUE(s.ok());
 }
 
-TEST_F(End2endTest, ResponseStream) {
-  ResetStub(false);
+TEST_P(End2endTest, ResponseStream) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -617,8 +514,8 @@ TEST_F(End2endTest, ResponseStream) {
   EXPECT_TRUE(s.ok());
 }
 
-TEST_F(End2endTest, BidiStream) {
-  ResetStub(false);
+TEST_P(End2endTest, BidiStream) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -650,8 +547,8 @@ TEST_F(End2endTest, BidiStream) {
 
 // Talk to the two services with the same name but different package names.
 // The two stubs are created on the same channel.
-TEST_F(End2endTest, DiffPackageServices) {
-  ResetStub(false);
+TEST_P(End2endTest, DiffPackageServices) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   request.set_message("Hello");
@@ -670,33 +567,6 @@ TEST_F(End2endTest, DiffPackageServices) {
   EXPECT_TRUE(s.ok());
 }
 
-// rpc and stream should fail on bad credentials.
-TEST_F(End2endTest, BadCredentials) {
-  std::shared_ptr<Credentials> bad_creds = GoogleRefreshTokenCredentials("");
-  EXPECT_EQ(static_cast<Credentials*>(nullptr), bad_creds.get());
-  std::shared_ptr<Channel> channel =
-      CreateChannel(server_address_.str(), bad_creds);
-  std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub(
-      grpc::cpp::test::util::TestService::NewStub(channel));
-  EchoRequest request;
-  EchoResponse response;
-  ClientContext context;
-  request.set_message("Hello");
-
-  Status s = stub->Echo(&context, request, &response);
-  EXPECT_EQ("", response.message());
-  EXPECT_FALSE(s.ok());
-  EXPECT_EQ(StatusCode::INVALID_ARGUMENT, s.error_code());
-  EXPECT_EQ("Invalid credentials.", s.error_message());
-
-  ClientContext context2;
-  auto stream = stub->BidiStream(&context2);
-  s = stream->Finish();
-  EXPECT_FALSE(s.ok());
-  EXPECT_EQ(StatusCode::INVALID_ARGUMENT, s.error_code());
-  EXPECT_EQ("Invalid credentials.", s.error_message());
-}
-
 void CancelRpc(ClientContext* context, int delay_us, TestServiceImpl* service) {
   gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
                                gpr_time_from_micros(delay_us, GPR_TIMESPAN)));
@@ -705,40 +575,9 @@ void CancelRpc(ClientContext* context, int delay_us, TestServiceImpl* service) {
   context->TryCancel();
 }
 
-// Client cancels rpc after 10ms
-TEST_P(End2endTest, ClientCancelsRpc) {
-  ResetStub(GetParam());
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("Hello");
-  const int kCancelDelayUs = 10 * 1000;
-  request.mutable_param()->set_client_cancel_after_us(kCancelDelayUs);
-
-  ClientContext context;
-  std::thread cancel_thread(CancelRpc, &context, kCancelDelayUs, &service_);
-  Status s = stub_->Echo(&context, request, &response);
-  cancel_thread.join();
-  EXPECT_EQ(StatusCode::CANCELLED, s.error_code());
-  EXPECT_EQ(s.error_message(), "Cancelled");
-}
-
-// Server cancels rpc after 1ms
-TEST_P(End2endTest, ServerCancelsRpc) {
-  ResetStub(GetParam());
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("Hello");
-  request.mutable_param()->set_server_cancel_after_us(1000);
-
-  ClientContext context;
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(StatusCode::CANCELLED, s.error_code());
-  EXPECT_TRUE(s.error_message().empty());
-}
-
 // Client cancels request stream after sending two messages
-TEST_F(End2endTest, ClientCancelsRequestStream) {
-  ResetStub(false);
+TEST_P(End2endTest, ClientCancelsRequestStream) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -757,8 +596,8 @@ TEST_F(End2endTest, ClientCancelsRequestStream) {
 }
 
 // Client cancels server stream after sending some messages
-TEST_F(End2endTest, ClientCancelsResponseStream) {
-  ResetStub(false);
+TEST_P(End2endTest, ClientCancelsResponseStream) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -789,8 +628,8 @@ TEST_F(End2endTest, ClientCancelsResponseStream) {
 }
 
 // Client cancels bidi stream after sending some messages
-TEST_F(End2endTest, ClientCancelsBidi) {
-  ResetStub(false);
+TEST_P(End2endTest, ClientCancelsBidi) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -821,8 +660,8 @@ TEST_F(End2endTest, ClientCancelsBidi) {
   EXPECT_EQ(grpc::StatusCode::CANCELLED, s.error_code());
 }
 
-TEST_F(End2endTest, RpcMaxMessageSize) {
-  ResetStub(false);
+TEST_P(End2endTest, RpcMaxMessageSize) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   request.set_message(string(kMaxMessageSize_ * 2, 'a'));
@@ -832,110 +671,352 @@ TEST_F(End2endTest, RpcMaxMessageSize) {
   EXPECT_FALSE(s.ok());
 }
 
-bool MetadataContains(
-    const std::multimap<grpc::string_ref, grpc::string_ref>& metadata,
-    const grpc::string& key, const grpc::string& value) {
-  int count = 0;
+// Client sends 20 requests and the server returns CANCELLED status after
+// reading 10 requests.
+TEST_P(End2endTest, RequestStreamServerEarlyCancelTest) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
 
-  for (std::multimap<grpc::string_ref, grpc::string_ref>::const_iterator iter =
-           metadata.begin();
-       iter != metadata.end(); ++iter) {
-    if (ToString(iter->first) == key && ToString(iter->second) == value) {
-      count++;
-    }
+  context.AddMetadata(kServerCancelAfterReads, "10");
+  auto stream = stub_->RequestStream(&context, &response);
+  request.set_message("hello");
+  int send_messages = 20;
+  while (send_messages > 10) {
+    EXPECT_TRUE(stream->Write(request));
+    send_messages--;
   }
-  return count == 1;
+  while (send_messages > 0) {
+    stream->Write(request);
+    send_messages--;
+  }
+  stream->WritesDone();
+  Status s = stream->Finish();
+  EXPECT_EQ(s.error_code(), StatusCode::CANCELLED);
 }
 
-TEST_F(End2endTest, SetPerCallCredentials) {
-  ResetStub(false);
-  EchoRequest request;
-  EchoResponse response;
-  ClientContext context;
-  std::shared_ptr<Credentials> creds =
-      GoogleIAMCredentials("fake_token", "fake_selector");
-  context.set_credentials(creds);
-  request.set_message("Hello");
-  request.mutable_param()->set_echo_metadata(true);
+void ReaderThreadFunc(ClientReaderWriter<EchoRequest, EchoResponse>* stream,
+                      gpr_event* ev) {
+  EchoResponse resp;
+  gpr_event_set(ev, (void*)1);
+  while (stream->Read(&resp)) {
+    gpr_log(GPR_INFO, "Read message");
+  }
+}
 
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(request.message(), response.message());
+// Run a Read and a WritesDone simultaneously.
+TEST_P(End2endTest, SimultaneousReadWritesDone) {
+  ResetStub();
+  ClientContext context;
+  gpr_event ev;
+  gpr_event_init(&ev);
+  auto stream = stub_->BidiStream(&context);
+  std::thread reader_thread(ReaderThreadFunc, stream.get(), &ev);
+  gpr_event_wait(&ev, gpr_inf_future(GPR_CLOCK_REALTIME));
+  stream->WritesDone();
+  Status s = stream->Finish();
   EXPECT_TRUE(s.ok());
-  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
-                               GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
-                               "fake_token"));
-  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
-                               GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
-                               "fake_selector"));
+  reader_thread.join();
 }
 
-TEST_F(End2endTest, InsecurePerCallCredentials) {
-  ResetStub(false);
-  EchoRequest request;
-  EchoResponse response;
-  ClientContext context;
-  std::shared_ptr<Credentials> creds = InsecureCredentials();
-  context.set_credentials(creds);
-  request.set_message("Hello");
-  request.mutable_param()->set_echo_metadata(true);
+TEST_P(End2endTest, ChannelState) {
+  ResetStub();
+  // Start IDLE
+  EXPECT_EQ(GRPC_CHANNEL_IDLE, channel_->GetState(false));
 
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(StatusCode::CANCELLED, s.error_code());
-  EXPECT_EQ("Failed to set credentials to rpc.", s.error_message());
+  // Did not ask to connect, no state change.
+  CompletionQueue cq;
+  std::chrono::system_clock::time_point deadline =
+      std::chrono::system_clock::now() + std::chrono::milliseconds(10);
+  channel_->NotifyOnStateChange(GRPC_CHANNEL_IDLE, deadline, &cq, NULL);
+  void* tag;
+  bool ok = true;
+  cq.Next(&tag, &ok);
+  EXPECT_FALSE(ok);
+
+  EXPECT_EQ(GRPC_CHANNEL_IDLE, channel_->GetState(true));
+  EXPECT_TRUE(channel_->WaitForStateChange(GRPC_CHANNEL_IDLE,
+                                           gpr_inf_future(GPR_CLOCK_REALTIME)));
+  auto state = channel_->GetState(false);
+  EXPECT_TRUE(state == GRPC_CHANNEL_CONNECTING || state == GRPC_CHANNEL_READY);
 }
 
-TEST_F(End2endTest, OverridePerCallCredentials) {
-  ResetStub(false);
-  EchoRequest request;
-  EchoResponse response;
-  ClientContext context;
-  std::shared_ptr<Credentials> creds1 =
-      GoogleIAMCredentials("fake_token1", "fake_selector1");
-  context.set_credentials(creds1);
-  std::shared_ptr<Credentials> creds2 =
-      GoogleIAMCredentials("fake_token2", "fake_selector2");
-  context.set_credentials(creds2);
+// Takes 10s.
+TEST_P(End2endTest, ChannelStateTimeout) {
+  if (GetParam().use_tls) {
+    return;
+  }
+  int port = grpc_pick_unused_port_or_die();
+  std::ostringstream server_address;
+  server_address << "127.0.0.1:" << port;
+  // Channel to non-existing server
+  auto channel = CreateChannel(server_address.str(), InsecureCredentials());
+  // Start IDLE
+  EXPECT_EQ(GRPC_CHANNEL_IDLE, channel->GetState(true));
+
+  auto state = GRPC_CHANNEL_IDLE;
+  for (int i = 0; i < 10; i++) {
+    channel->WaitForStateChange(
+        state, std::chrono::system_clock::now() + std::chrono::seconds(1));
+    state = channel->GetState(false);
+  }
+}
+
+// Talking to a non-existing service.
+TEST_P(End2endTest, NonExistingService) {
+  ResetChannel();
+  std::unique_ptr<grpc::cpp::test::util::UnimplementedService::Stub> stub;
+  stub = grpc::cpp::test::util::UnimplementedService::NewStub(channel_);
+
+  EchoRequest request;
+  EchoResponse response;
   request.set_message("Hello");
-  request.mutable_param()->set_echo_metadata(true);
 
+  ClientContext context;
+  Status s = stub->Unimplemented(&context, request, &response);
+  EXPECT_EQ(StatusCode::UNIMPLEMENTED, s.error_code());
+  EXPECT_EQ("", s.error_message());
+}
+
+//////////////////////////////////////////////////////////////////////////
+// Test with and without a proxy.
+class ProxyEnd2endTest : public End2endTest {
+ protected:
+};
+
+TEST_P(ProxyEnd2endTest, SimpleRpc) {
+  ResetStub();
+  SendRpc(stub_.get(), 1);
+}
+
+TEST_P(ProxyEnd2endTest, MultipleRpcs) {
+  ResetStub();
+  std::vector<std::thread*> threads;
+  for (int i = 0; i < 10; ++i) {
+    threads.push_back(new std::thread(SendRpc, stub_.get(), 10));
+  }
+  for (int i = 0; i < 10; ++i) {
+    threads[i]->join();
+    delete threads[i];
+  }
+}
+
+// Set a 10us deadline and make sure proper error is returned.
+TEST_P(ProxyEnd2endTest, RpcDeadlineExpires) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("Hello");
+
+  ClientContext context;
+  std::chrono::system_clock::time_point deadline =
+      std::chrono::system_clock::now() + std::chrono::microseconds(10);
+  context.set_deadline(deadline);
   Status s = stub_->Echo(&context, request, &response);
-  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
-                               GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
-                               "fake_token2"));
-  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
-                               GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
-                               "fake_selector2"));
-  EXPECT_FALSE(MetadataContains(context.GetServerTrailingMetadata(),
-                                GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
-                                "fake_token1"));
-  EXPECT_FALSE(MetadataContains(context.GetServerTrailingMetadata(),
-                                GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
-                                "fake_selector1"));
-  EXPECT_EQ(request.message(), response.message());
+  EXPECT_EQ(StatusCode::DEADLINE_EXCEEDED, s.error_code());
+}
+
+// Set a long but finite deadline.
+TEST_P(ProxyEnd2endTest, RpcLongDeadline) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("Hello");
+
+  ClientContext context;
+  std::chrono::system_clock::time_point deadline =
+      std::chrono::system_clock::now() + std::chrono::hours(1);
+  context.set_deadline(deadline);
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(response.message(), request.message());
   EXPECT_TRUE(s.ok());
 }
 
-TEST_F(End2endTest, NonBlockingAuthMetadataPluginFailure) {
-  ResetStub(false);
+// Ask server to echo back the deadline it sees.
+TEST_P(ProxyEnd2endTest, EchoDeadline) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
+  request.set_message("Hello");
+  request.mutable_param()->set_echo_deadline(true);
+
   ClientContext context;
-  context.set_credentials(
-      MetadataCredentialsFromPlugin(std::unique_ptr<MetadataCredentialsPlugin>(
-          new TestMetadataCredentialsPlugin(
-              "Does not matter, will fail anyway (see 3rd param)", false,
-              false))));
+  std::chrono::system_clock::time_point deadline =
+      std::chrono::system_clock::now() + std::chrono::seconds(100);
+  context.set_deadline(deadline);
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(response.message(), request.message());
+  EXPECT_TRUE(s.ok());
+  gpr_timespec sent_deadline;
+  Timepoint2Timespec(deadline, &sent_deadline);
+  // Allow 1 second error.
+  EXPECT_LE(response.param().request_deadline() - sent_deadline.tv_sec, 1);
+  EXPECT_GE(response.param().request_deadline() - sent_deadline.tv_sec, -1);
+}
+
+// Ask server to echo back the deadline it sees. The rpc has no deadline.
+TEST_P(ProxyEnd2endTest, EchoDeadlineForNoDeadlineRpc) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
   request.set_message("Hello");
+  request.mutable_param()->set_echo_deadline(true);
 
+  ClientContext context;
   Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(response.message(), request.message());
+  EXPECT_TRUE(s.ok());
+  EXPECT_EQ(response.param().request_deadline(),
+            gpr_inf_future(GPR_CLOCK_REALTIME).tv_sec);
+}
+
+TEST_P(ProxyEnd2endTest, UnimplementedRpc) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("Hello");
+
+  ClientContext context;
+  Status s = stub_->Unimplemented(&context, request, &response);
   EXPECT_FALSE(s.ok());
-  EXPECT_EQ(s.error_code(), StatusCode::UNAUTHENTICATED);
+  EXPECT_EQ(s.error_code(), grpc::StatusCode::UNIMPLEMENTED);
+  EXPECT_EQ(s.error_message(), "");
+  EXPECT_EQ(response.message(), "");
 }
 
-TEST_F(End2endTest, NonBlockingAuthMetadataPluginAndProcessorSuccess) {
-  auto* processor = new TestAuthMetadataProcessor(false);
+// Client cancels rpc after 10ms
+TEST_P(ProxyEnd2endTest, ClientCancelsRpc) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("Hello");
+  const int kCancelDelayUs = 10 * 1000;
+  request.mutable_param()->set_client_cancel_after_us(kCancelDelayUs);
+
+  ClientContext context;
+  std::thread cancel_thread(CancelRpc, &context, kCancelDelayUs, &service_);
+  Status s = stub_->Echo(&context, request, &response);
+  cancel_thread.join();
+  EXPECT_EQ(StatusCode::CANCELLED, s.error_code());
+  EXPECT_EQ(s.error_message(), "Cancelled");
+}
+
+// Server cancels rpc after 1ms
+TEST_P(ProxyEnd2endTest, ServerCancelsRpc) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("Hello");
+  request.mutable_param()->set_server_cancel_after_us(1000);
+
+  ClientContext context;
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(StatusCode::CANCELLED, s.error_code());
+  EXPECT_TRUE(s.error_message().empty());
+}
+
+// Make the response larger than the flow control window.
+TEST_P(ProxyEnd2endTest, HugeResponse) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("huge response");
+  const size_t kResponseSize = 1024 * (1024 + 10);
+  request.mutable_param()->set_response_message_length(kResponseSize);
+
+  ClientContext context;
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(kResponseSize, response.message().size());
+  EXPECT_TRUE(s.ok());
+}
+
+TEST_P(ProxyEnd2endTest, Peer) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("hello");
+  request.mutable_param()->set_echo_peer(true);
+
+  ClientContext context;
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(response.message(), request.message());
+  EXPECT_TRUE(s.ok());
+  EXPECT_TRUE(CheckIsLocalhost(response.param().peer()));
+  EXPECT_TRUE(CheckIsLocalhost(context.peer()));
+}
+
+//////////////////////////////////////////////////////////////////////////
+class SecureEnd2endTest : public End2endTest {
+ protected:
+  SecureEnd2endTest() {
+    GPR_ASSERT(!GetParam().use_proxy);
+    GPR_ASSERT(GetParam().use_tls);
+  }
+};
+
+TEST_P(SecureEnd2endTest, SimpleRpcWithHost) {
+  ResetStub();
+
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("Hello");
+
+  ClientContext context;
+  context.set_authority("foo.test.youtube.com");
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(response.message(), request.message());
+  EXPECT_TRUE(response.has_param());
+  EXPECT_EQ("special", response.param().host());
+  EXPECT_TRUE(s.ok());
+}
+
+// rpc and stream should fail on bad credentials.
+TEST_P(SecureEnd2endTest, BadCredentials) {
+  std::shared_ptr<Credentials> bad_creds = GoogleRefreshTokenCredentials("");
+  EXPECT_EQ(static_cast<Credentials*>(nullptr), bad_creds.get());
+  std::shared_ptr<Channel> channel =
+      CreateChannel(server_address_.str(), bad_creds);
+  std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub(
+      grpc::cpp::test::util::TestService::NewStub(channel));
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+  request.set_message("Hello");
+
+  Status s = stub->Echo(&context, request, &response);
+  EXPECT_EQ("", response.message());
+  EXPECT_FALSE(s.ok());
+  EXPECT_EQ(StatusCode::INVALID_ARGUMENT, s.error_code());
+  EXPECT_EQ("Invalid credentials.", s.error_message());
+
+  ClientContext context2;
+  auto stream = stub->BidiStream(&context2);
+  s = stream->Finish();
+  EXPECT_FALSE(s.ok());
+  EXPECT_EQ(StatusCode::INVALID_ARGUMENT, s.error_code());
+  EXPECT_EQ("Invalid credentials.", s.error_message());
+}
+
+bool MetadataContains(
+    const std::multimap<grpc::string_ref, grpc::string_ref>& metadata,
+    const grpc::string& key, const grpc::string& value) {
+  int count = 0;
+
+  for (std::multimap<grpc::string_ref, grpc::string_ref>::const_iterator iter =
+           metadata.begin();
+       iter != metadata.end(); ++iter) {
+    if (ToString(iter->first) == key && ToString(iter->second) == value) {
+      count++;
+    }
+  }
+  return count == 1;
+}
+
+TEST_P(SecureEnd2endTest, BlockingAuthMetadataPluginAndProcessorSuccess) {
+  auto* processor = new TestAuthMetadataProcessor(true);
   StartServer(std::shared_ptr<AuthMetadataProcessor>(processor));
-  ResetStub(false);
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -955,10 +1036,10 @@ TEST_F(End2endTest, NonBlockingAuthMetadataPluginAndProcessorSuccess) {
       grpc::string("Bearer ") + TestAuthMetadataProcessor::kGoodGuy));
 }
 
-TEST_F(End2endTest, NonBlockingAuthMetadataPluginAndProcessorFailure) {
-  auto* processor = new TestAuthMetadataProcessor(false);
+TEST_P(SecureEnd2endTest, BlockingAuthMetadataPluginAndProcessorFailure) {
+  auto* processor = new TestAuthMetadataProcessor(true);
   StartServer(std::shared_ptr<AuthMetadataProcessor>(processor));
-  ResetStub(false);
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -969,16 +1050,83 @@ TEST_F(End2endTest, NonBlockingAuthMetadataPluginAndProcessorFailure) {
   EXPECT_FALSE(s.ok());
   EXPECT_EQ(s.error_code(), StatusCode::UNAUTHENTICATED);
 }
+TEST_P(SecureEnd2endTest, SetPerCallCredentials) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+  std::shared_ptr<Credentials> creds =
+      GoogleIAMCredentials("fake_token", "fake_selector");
+  context.set_credentials(creds);
+  request.set_message("Hello");
+  request.mutable_param()->set_echo_metadata(true);
 
-TEST_F(End2endTest, BlockingAuthMetadataPluginFailure) {
-  ResetStub(false);
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(request.message(), response.message());
+  EXPECT_TRUE(s.ok());
+  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
+                               GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                               "fake_token"));
+  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
+                               GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                               "fake_selector"));
+}
+
+TEST_P(SecureEnd2endTest, InsecurePerCallCredentials) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+  std::shared_ptr<Credentials> creds = InsecureCredentials();
+  context.set_credentials(creds);
+  request.set_message("Hello");
+  request.mutable_param()->set_echo_metadata(true);
+
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(StatusCode::CANCELLED, s.error_code());
+  EXPECT_EQ("Failed to set credentials to rpc.", s.error_message());
+}
+
+TEST_P(SecureEnd2endTest, OverridePerCallCredentials) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+  std::shared_ptr<Credentials> creds1 =
+      GoogleIAMCredentials("fake_token1", "fake_selector1");
+  context.set_credentials(creds1);
+  std::shared_ptr<Credentials> creds2 =
+      GoogleIAMCredentials("fake_token2", "fake_selector2");
+  context.set_credentials(creds2);
+  request.set_message("Hello");
+  request.mutable_param()->set_echo_metadata(true);
+
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
+                               GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                               "fake_token2"));
+  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
+                               GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                               "fake_selector2"));
+  EXPECT_FALSE(MetadataContains(context.GetServerTrailingMetadata(),
+                                GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                                "fake_token1"));
+  EXPECT_FALSE(MetadataContains(context.GetServerTrailingMetadata(),
+                                GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                                "fake_selector1"));
+  EXPECT_EQ(request.message(), response.message());
+  EXPECT_TRUE(s.ok());
+}
+
+TEST_P(SecureEnd2endTest, NonBlockingAuthMetadataPluginFailure) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
   context.set_credentials(
       MetadataCredentialsFromPlugin(std::unique_ptr<MetadataCredentialsPlugin>(
           new TestMetadataCredentialsPlugin(
-              "Does not matter, will fail anyway (see 3rd param)", true,
+              "Does not matter, will fail anyway (see 3rd param)", false,
               false))));
   request.set_message("Hello");
 
@@ -987,10 +1135,10 @@ TEST_F(End2endTest, BlockingAuthMetadataPluginFailure) {
   EXPECT_EQ(s.error_code(), StatusCode::UNAUTHENTICATED);
 }
 
-TEST_F(End2endTest, BlockingAuthMetadataPluginAndProcessorSuccess) {
-  auto* processor = new TestAuthMetadataProcessor(true);
+TEST_P(SecureEnd2endTest, NonBlockingAuthMetadataPluginAndProcessorSuccess) {
+  auto* processor = new TestAuthMetadataProcessor(false);
   StartServer(std::shared_ptr<AuthMetadataProcessor>(processor));
-  ResetStub(false);
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -1010,10 +1158,10 @@ TEST_F(End2endTest, BlockingAuthMetadataPluginAndProcessorSuccess) {
       grpc::string("Bearer ") + TestAuthMetadataProcessor::kGoodGuy));
 }
 
-TEST_F(End2endTest, BlockingAuthMetadataPluginAndProcessorFailure) {
-  auto* processor = new TestAuthMetadataProcessor(true);
+TEST_P(SecureEnd2endTest, NonBlockingAuthMetadataPluginAndProcessorFailure) {
+  auto* processor = new TestAuthMetadataProcessor(false);
   StartServer(std::shared_ptr<AuthMetadataProcessor>(processor));
-  ResetStub(false);
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
@@ -1025,29 +1173,25 @@ TEST_F(End2endTest, BlockingAuthMetadataPluginAndProcessorFailure) {
   EXPECT_EQ(s.error_code(), StatusCode::UNAUTHENTICATED);
 }
 
-// Client sends 20 requests and the server returns CANCELLED status after
-// reading 10 requests.
-TEST_F(End2endTest, RequestStreamServerEarlyCancelTest) {
-  ResetStub(false);
+TEST_P(SecureEnd2endTest, BlockingAuthMetadataPluginFailure) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
+  context.set_credentials(
+      MetadataCredentialsFromPlugin(std::unique_ptr<MetadataCredentialsPlugin>(
+          new TestMetadataCredentialsPlugin(
+              "Does not matter, will fail anyway (see 3rd param)", true,
+              false))));
+  request.set_message("Hello");
 
-  context.AddMetadata(kServerCancelAfterReads, "10");
-  auto stream = stub_->RequestStream(&context, &response);
-  request.set_message("hello");
-  int send_messages = 20;
-  while (send_messages > 0) {
-    EXPECT_TRUE(stream->Write(request));
-    send_messages--;
-  }
-  stream->WritesDone();
-  Status s = stream->Finish();
-  EXPECT_EQ(s.error_code(), StatusCode::CANCELLED);
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_FALSE(s.ok());
+  EXPECT_EQ(s.error_code(), StatusCode::UNAUTHENTICATED);
 }
 
-TEST_F(End2endTest, ClientAuthContext) {
-  ResetStub(false);
+TEST_P(SecureEnd2endTest, ClientAuthContext) {
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   request.set_message("Hello");
@@ -1072,119 +1216,20 @@ TEST_F(End2endTest, ClientAuthContext) {
   EXPECT_EQ("*.test.youtube.com", ToString(auth_ctx->GetPeerIdentity()[2]));
 }
 
-// Make the response larger than the flow control window.
-TEST_P(End2endTest, HugeResponse) {
-  ResetStub(GetParam());
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("huge response");
-  const size_t kResponseSize = 1024 * (1024 + 10);
-  request.mutable_param()->set_response_message_length(kResponseSize);
-
-  ClientContext context;
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(kResponseSize, response.message().size());
-  EXPECT_TRUE(s.ok());
-}
-
-namespace {
-void ReaderThreadFunc(ClientReaderWriter<EchoRequest, EchoResponse>* stream,
-                      gpr_event* ev) {
-  EchoResponse resp;
-  gpr_event_set(ev, (void*)1);
-  while (stream->Read(&resp)) {
-    gpr_log(GPR_INFO, "Read message");
-  }
-}
-}  // namespace
-
-// Run a Read and a WritesDone simultaneously.
-TEST_F(End2endTest, SimultaneousReadWritesDone) {
-  ResetStub(false);
-  ClientContext context;
-  gpr_event ev;
-  gpr_event_init(&ev);
-  auto stream = stub_->BidiStream(&context);
-  std::thread reader_thread(ReaderThreadFunc, stream.get(), &ev);
-  gpr_event_wait(&ev, gpr_inf_future(GPR_CLOCK_REALTIME));
-  stream->WritesDone();
-  Status s = stream->Finish();
-  EXPECT_TRUE(s.ok());
-  reader_thread.join();
-}
-
-TEST_P(End2endTest, Peer) {
-  ResetStub(GetParam());
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("hello");
-  request.mutable_param()->set_echo_peer(true);
-
-  ClientContext context;
-  Status s = stub_->Echo(&context, request, &response);
-  EXPECT_EQ(response.message(), request.message());
-  EXPECT_TRUE(s.ok());
-  EXPECT_TRUE(CheckIsLocalhost(response.param().peer()));
-  EXPECT_TRUE(CheckIsLocalhost(context.peer()));
-}
-
-TEST_F(End2endTest, ChannelState) {
-  ResetStub(false);
-  // Start IDLE
-  EXPECT_EQ(GRPC_CHANNEL_IDLE, channel_->GetState(false));
-
-  // Did not ask to connect, no state change.
-  CompletionQueue cq;
-  std::chrono::system_clock::time_point deadline =
-      std::chrono::system_clock::now() + std::chrono::milliseconds(10);
-  channel_->NotifyOnStateChange(GRPC_CHANNEL_IDLE, deadline, &cq, NULL);
-  void* tag;
-  bool ok = true;
-  cq.Next(&tag, &ok);
-  EXPECT_FALSE(ok);
-
-  EXPECT_EQ(GRPC_CHANNEL_IDLE, channel_->GetState(true));
-  EXPECT_TRUE(channel_->WaitForStateChange(GRPC_CHANNEL_IDLE,
-                                           gpr_inf_future(GPR_CLOCK_REALTIME)));
-  EXPECT_EQ(GRPC_CHANNEL_CONNECTING, channel_->GetState(false));
-}
-
-// Takes 10s.
-TEST_F(End2endTest, ChannelStateTimeout) {
-  int port = grpc_pick_unused_port_or_die();
-  std::ostringstream server_address;
-  server_address << "127.0.0.1:" << port;
-  // Channel to non-existing server
-  auto channel = CreateChannel(server_address.str(), InsecureCredentials());
-  // Start IDLE
-  EXPECT_EQ(GRPC_CHANNEL_IDLE, channel->GetState(true));
-
-  auto state = GRPC_CHANNEL_IDLE;
-  for (int i = 0; i < 10; i++) {
-    channel->WaitForStateChange(
-        state, std::chrono::system_clock::now() + std::chrono::seconds(1));
-    state = channel->GetState(false);
-  }
-}
-
-// Talking to a non-existing service.
-TEST_F(End2endTest, NonExistingService) {
-  ResetChannel();
-  std::unique_ptr<grpc::cpp::test::util::UnimplementedService::Stub> stub;
-  stub = grpc::cpp::test::util::UnimplementedService::NewStub(channel_);
+INSTANTIATE_TEST_CASE_P(End2end, End2endTest,
+                        ::testing::Values(TestScenario(false, true),
+                                          TestScenario(false, false)));
 
-  EchoRequest request;
-  EchoResponse response;
-  request.set_message("Hello");
+INSTANTIATE_TEST_CASE_P(ProxyEnd2end, ProxyEnd2endTest,
+                        ::testing::Values(TestScenario(true, true),
+                                          TestScenario(true, false),
+                                          TestScenario(false, true),
+                                          TestScenario(false, false)));
 
-  ClientContext context;
-  Status s = stub->Unimplemented(&context, request, &response);
-  EXPECT_EQ(StatusCode::UNIMPLEMENTED, s.error_code());
-  EXPECT_EQ("", s.error_message());
-}
-
-INSTANTIATE_TEST_CASE_P(End2end, End2endTest, ::testing::Values(false, true));
+INSTANTIATE_TEST_CASE_P(SecureEnd2end, SecureEnd2endTest,
+                        ::testing::Values(TestScenario(false, true)));
 
+}  // namespace
 }  // namespace testing
 }  // namespace grpc
 
diff --git a/test/cpp/end2end/streaming_throughput_test.cc b/test/cpp/end2end/streaming_throughput_test.cc
index c1355b38f0fd2d2314c77d1e6a7921f9ffc70e8e..d4ab1486ccbbde7d6f266d4c8179b60ec2893339 100644
--- a/test/cpp/end2end/streaming_throughput_test.cc
+++ b/test/cpp/end2end/streaming_throughput_test.cc
@@ -31,9 +31,9 @@
  *
  */
 
-#include <atomic>
 #include <mutex>
 #include <thread>
+#include <time.h>
 
 #include <grpc++/channel.h>
 #include <grpc++/client_context.h>
@@ -44,6 +44,7 @@
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
 #include <grpc/grpc.h>
+#include <grpc/support/atm.h>
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 #include <gtest/gtest.h>
@@ -57,54 +58,62 @@ using grpc::cpp::test::util::EchoRequest;
 using grpc::cpp::test::util::EchoResponse;
 using std::chrono::system_clock;
 
-const char* kLargeString = "("
-  "To be, or not to be- that is the question:"
-  "Whether 'tis nobler in the mind to suffer"
-  "The slings and arrows of outrageous fortune"
-  "Or to take arms against a sea of troubles,"
-  "And by opposing end them. To die- to sleep-"
-  "No more; and by a sleep to say we end"
-  "The heartache, and the thousand natural shock"
-  "That flesh is heir to. 'Tis a consummation"
-  "Devoutly to be wish'd. To die- to sleep."
-  "To sleep- perchance to dream: ay, there's the rub!"
-  "For in that sleep of death what dreams may come"
-  "When we have shuffled off this mortal coil,"
-  "Must give us pause. There's the respect"
-  "That makes calamity of so long life."
-  "For who would bear the whips and scorns of time,"
-  "Th' oppressor's wrong, the proud man's contumely,"
-  "The pangs of despis'd love, the law's delay,"
-  "The insolence of office, and the spurns"
-  "That patient merit of th' unworthy takes,"
-  "When he himself might his quietus make"
-  "With a bare bodkin? Who would these fardels bear,"
-  "To grunt and sweat under a weary life,"
-  "But that the dread of something after death-"
-  "The undiscover'd country, from whose bourn"
-  "No traveller returns- puzzles the will,"
-  "And makes us rather bear those ills we have"
-  "Than fly to others that we know not of?"
-  "Thus conscience does make cowards of us all,"
-  "And thus the native hue of resolution"
-  "Is sicklied o'er with the pale cast of thought,"
-  "And enterprises of great pith and moment"
-  "With this regard their currents turn awry"
-  "And lose the name of action.- Soft you now!"
-  "The fair Ophelia!- Nymph, in thy orisons"
-  "Be all my sins rememb'red.";
+const char* kLargeString =
+    "("
+    "To be, or not to be- that is the question:"
+    "Whether 'tis nobler in the mind to suffer"
+    "The slings and arrows of outrageous fortune"
+    "Or to take arms against a sea of troubles,"
+    "And by opposing end them. To die- to sleep-"
+    "No more; and by a sleep to say we end"
+    "The heartache, and the thousand natural shock"
+    "That flesh is heir to. 'Tis a consummation"
+    "Devoutly to be wish'd. To die- to sleep."
+    "To sleep- perchance to dream: ay, there's the rub!"
+    "For in that sleep of death what dreams may come"
+    "When we have shuffled off this mortal coil,"
+    "Must give us pause. There's the respect"
+    "That makes calamity of so long life."
+    "For who would bear the whips and scorns of time,"
+    "Th' oppressor's wrong, the proud man's contumely,"
+    "The pangs of despis'd love, the law's delay,"
+    "The insolence of office, and the spurns"
+    "That patient merit of th' unworthy takes,"
+    "When he himself might his quietus make"
+    "With a bare bodkin? Who would these fardels bear,"
+    "To grunt and sweat under a weary life,"
+    "But that the dread of something after death-"
+    "The undiscover'd country, from whose bourn"
+    "No traveller returns- puzzles the will,"
+    "And makes us rather bear those ills we have"
+    "Than fly to others that we know not of?"
+    "Thus conscience does make cowards of us all,"
+    "And thus the native hue of resolution"
+    "Is sicklied o'er with the pale cast of thought,"
+    "And enterprises of great pith and moment"
+    "With this regard their currents turn awry"
+    "And lose the name of action.- Soft you now!"
+    "The fair Ophelia!- Nymph, in thy orisons"
+    "Be all my sins rememb'red.";
 
 namespace grpc {
 namespace testing {
 
 class TestServiceImpl : public ::grpc::cpp::test::util::TestService::Service {
  public:
-  static void BidiStream_Sender(ServerReaderWriter<EchoResponse, EchoRequest>* stream, std::atomic<bool>* should_exit) {
+  static void BidiStream_Sender(
+      ServerReaderWriter<EchoResponse, EchoRequest>* stream,
+      gpr_atm* should_exit) {
     EchoResponse response;
     response.set_message(kLargeString);
-    while (!should_exit->load()) {
-      // TODO(vpai): Decide if the below requires blocking annotation
-      std::this_thread::sleep_for(std::chrono::milliseconds(1));
+    while (gpr_atm_acq_load(should_exit) == static_cast<gpr_atm>(0)) {
+      struct timespec tv = {0, 1000000};  // 1 ms
+      struct timespec rem;
+      // TODO (vpai): Mark this blocking
+      while (nanosleep(&tv, &rem) != 0) {
+        tv = rem;
+      };
+
       stream->Write(response);
     }
   }
@@ -114,14 +123,21 @@ class TestServiceImpl : public ::grpc::cpp::test::util::TestService::Service {
                     ServerReaderWriter<EchoResponse, EchoRequest>* stream)
       GRPC_OVERRIDE {
     EchoRequest request;
-    std::atomic<bool> should_exit(false);
-    std::thread sender(std::bind(&TestServiceImpl::BidiStream_Sender, stream, &should_exit));
+    gpr_atm should_exit;
+    gpr_atm_rel_store(&should_exit, static_cast<gpr_atm>(0));
+
+    std::thread sender(
+        std::bind(&TestServiceImpl::BidiStream_Sender, stream, &should_exit));
 
     while (stream->Read(&request)) {
-      // TODO(vpai): Decide if the below requires blocking annotation
-      std::this_thread::sleep_for(std::chrono::milliseconds(3));
+      struct timespec tv = {0, 3000000};  // 3 ms
+      struct timespec rem;
+      // TODO (vpai): Mark this blocking
+      while (nanosleep(&tv, &rem) != 0) {
+        tv = rem;
+      };
     }
-    should_exit.store(true);
+    gpr_atm_rel_store(&should_exit, static_cast<gpr_atm>(1));
     sender.join();
     return Status::OK;
   }
@@ -143,8 +159,8 @@ class End2endTest : public ::testing::Test {
   void TearDown() GRPC_OVERRIDE { server_->Shutdown(); }
 
   void ResetStub() {
-    std::shared_ptr<Channel> channel = CreateChannel(
-        server_address_.str(), InsecureCredentials());
+    std::shared_ptr<Channel> channel =
+        CreateChannel(server_address_.str(), InsecureCredentials());
     stub_ = grpc::cpp::test::util::TestService::NewStub(channel);
   }
 
@@ -157,7 +173,7 @@ class End2endTest : public ::testing::Test {
 static void Drainer(ClientReaderWriter<EchoRequest, EchoResponse>* reader) {
   EchoResponse response;
   while (reader->Read(&response)) {
-      // Just drain out the responses as fast as possible.
+    // Just drain out the responses as fast as possible.
   }
 }
 
diff --git a/test/cpp/interop/client.cc b/test/cpp/interop/client.cc
index 58c71cca35e8f50ed541997c916c1a8fb3097090..dbe29395b4f0efc58fdef53626a21d1421eecea0 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -45,7 +45,7 @@
 #include "test/cpp/interop/interop_client.h"
 #include "test/cpp/util/test_config.h"
 
-DEFINE_bool(enable_ssl, false, "Whether to use ssl/tls.");
+DEFINE_bool(use_tls, false, "Whether to use tls.");
 DEFINE_bool(use_prod_roots, false, "True to use SSL roots for google");
 DEFINE_int32(server_port, 0, "Server port.");
 DEFINE_string(server_host, "127.0.0.1", "Server host to connect to");
@@ -143,11 +143,11 @@ int main(int argc, char** argv) {
     client.DoEmptyStream();
     client.DoStatusWithMessage();
     // service_account_creds and jwt_token_creds can only run with ssl.
-    if (FLAGS_enable_ssl) {
+    if (FLAGS_use_tls) {
       grpc::string json_key = GetServiceAccountJsonKey();
       client.DoJwtTokenCreds(json_key);
-      client.DoOauth2AuthToken(
-          FLAGS_default_service_account, FLAGS_oauth_scope);
+      client.DoOauth2AuthToken(FLAGS_default_service_account,
+                               FLAGS_oauth_scope);
       client.DoPerRpcCreds(json_key);
     }
     // compute_engine_creds only runs in GCE.
diff --git a/test/cpp/interop/client_helper.cc b/test/cpp/interop/client_helper.cc
index f85aa6ad8eb7e0b8b17116390856d99c9b2c25d1..cbad21e318e6d5cddb4a79a628ddb8546bab9873 100644
--- a/test/cpp/interop/client_helper.cc
+++ b/test/cpp/interop/client_helper.cc
@@ -51,7 +51,7 @@
 #include "test/core/security/oauth2_utils.h"
 #include "test/cpp/util/create_test_channel.h"
 
-DECLARE_bool(enable_ssl);
+DECLARE_bool(use_tls);
 DECLARE_bool(use_prod_roots);
 DECLARE_int32(server_port);
 DECLARE_string(server_host);
@@ -99,27 +99,27 @@ std::shared_ptr<Channel> CreateChannelForTestCase(
 
   if (test_case == "compute_engine_creds") {
     std::shared_ptr<Credentials> creds;
-    GPR_ASSERT(FLAGS_enable_ssl);
+    GPR_ASSERT(FLAGS_use_tls);
     creds = GoogleComputeEngineCredentials();
     return CreateTestChannel(host_port, FLAGS_server_host_override,
-                             FLAGS_enable_ssl, FLAGS_use_prod_roots, creds);
+                             FLAGS_use_tls, FLAGS_use_prod_roots, creds);
   } else if (test_case == "jwt_token_creds") {
     std::shared_ptr<Credentials> creds;
-    GPR_ASSERT(FLAGS_enable_ssl);
+    GPR_ASSERT(FLAGS_use_tls);
     grpc::string json_key = GetServiceAccountJsonKey();
     std::chrono::seconds token_lifetime = std::chrono::hours(1);
     creds =
         ServiceAccountJWTAccessCredentials(json_key, token_lifetime.count());
     return CreateTestChannel(host_port, FLAGS_server_host_override,
-                             FLAGS_enable_ssl, FLAGS_use_prod_roots, creds);
+                             FLAGS_use_tls, FLAGS_use_prod_roots, creds);
   } else if (test_case == "oauth2_auth_token") {
     grpc::string raw_token = GetOauth2AccessToken();
     std::shared_ptr<Credentials> creds = AccessTokenCredentials(raw_token);
     return CreateTestChannel(host_port, FLAGS_server_host_override,
-                             FLAGS_enable_ssl, FLAGS_use_prod_roots, creds);
+                             FLAGS_use_tls, FLAGS_use_prod_roots, creds);
   } else {
     return CreateTestChannel(host_port, FLAGS_server_host_override,
-                             FLAGS_enable_ssl, FLAGS_use_prod_roots);
+                             FLAGS_use_tls, FLAGS_use_prod_roots);
   }
 }
 
diff --git a/test/cpp/interop/interop_client.cc b/test/cpp/interop/interop_client.cc
index 02e10a50aa44972662a33b995c4617e982ed3f02..516994576207adca463433b0c97648d32feea142 100644
--- a/test/cpp/interop/interop_client.cc
+++ b/test/cpp/interop/interop_client.cc
@@ -203,8 +203,7 @@ void InteropClient::DoOauth2AuthToken(const grpc::string& username,
 }
 
 void InteropClient::DoPerRpcCreds(const grpc::string& json_key) {
-  gpr_log(GPR_INFO,
-          "Sending a unary rpc with per-rpc JWT access token ...");
+  gpr_log(GPR_INFO, "Sending a unary rpc with per-rpc JWT access token ...");
   SimpleRequest request;
   SimpleResponse response;
   request.set_fill_username(true);
diff --git a/test/cpp/interop/interop_test.cc b/test/cpp/interop/interop_test.cc
index f01b032e95b6126a7f40fdadfb0e12a46ddb6c51..faf6698903335fc68ae2cbd512593a46b6cf4168 100644
--- a/test/cpp/interop/interop_test.cc
+++ b/test/cpp/interop/interop_test.cc
@@ -55,7 +55,6 @@ extern "C" {
 #include "src/core/support/string.h"
 }
 
-
 int test_client(const char* root, const char* host, int port) {
   int status;
   pid_t cli;
diff --git a/test/cpp/interop/server.cc b/test/cpp/interop/server.cc
index 03b6532447341db123aaeb8431f366a4f9a54596..c0e1ec943d7c07d7afd07c412c26d7fdc78e8def 100644
--- a/test/cpp/interop/server.cc
+++ b/test/cpp/interop/server.cc
@@ -54,7 +54,7 @@
 #include "test/proto/empty.grpc.pb.h"
 #include "test/proto/messages.grpc.pb.h"
 
-DEFINE_bool(enable_ssl, false, "Whether to use ssl/tls.");
+DEFINE_bool(use_tls, false, "Whether to use tls.");
 DEFINE_int32(port, 0, "Server port.");
 
 using grpc::Server;
diff --git a/test/cpp/interop/server_helper.cc b/test/cpp/interop/server_helper.cc
index 015198354e9243443eb1c62981cda09bd6fae592..4570750846674f276d0444f8ccbe782f0c8648f2 100644
--- a/test/cpp/interop/server_helper.cc
+++ b/test/cpp/interop/server_helper.cc
@@ -41,13 +41,13 @@
 #include "src/core/surface/call.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 
-DECLARE_bool(enable_ssl);
+DECLARE_bool(use_tls);
 
 namespace grpc {
 namespace testing {
 
 std::shared_ptr<ServerCredentials> CreateInteropServerCredentials() {
-  if (FLAGS_enable_ssl) {
+  if (FLAGS_use_tls) {
     SslServerCredentialsOptions::PemKeyCertPair pkcp = {test_server1_key,
                                                         test_server1_cert};
     SslServerCredentialsOptions ssl_opts;
diff --git a/test/cpp/qps/driver.cc b/test/cpp/qps/driver.cc
index 6e71c459353ca63273dbda0299edddd8663b0c5e..ac763e4b3c617755ea5ef2a250c2d0ee19e98b9f 100644
--- a/test/cpp/qps/driver.cc
+++ b/test/cpp/qps/driver.cc
@@ -153,8 +153,8 @@ std::unique_ptr<ScenarioResult> RunScenario(
   // where class contained in std::vector must have a copy constructor
   auto* servers = new ServerData[num_servers];
   for (size_t i = 0; i < num_servers; i++) {
-    servers[i].stub = Worker::NewStub(CreateChannel(workers[i],
-                                                    InsecureCredentials()));
+    servers[i].stub =
+        Worker::NewStub(CreateChannel(workers[i], InsecureCredentials()));
     ServerArgs args;
     result_server_config = server_config;
     result_server_config.set_host(workers[i]);
@@ -181,8 +181,8 @@ std::unique_ptr<ScenarioResult> RunScenario(
   // where class contained in std::vector must have a copy constructor
   auto* clients = new ClientData[num_clients];
   for (size_t i = 0; i < num_clients; i++) {
-    clients[i].stub = Worker::NewStub(CreateChannel(workers[i + num_servers],
-                                                    InsecureCredentials()));
+    clients[i].stub = Worker::NewStub(
+        CreateChannel(workers[i + num_servers], InsecureCredentials()));
     ClientArgs args;
     result_client_config = client_config;
     result_client_config.set_host(workers[i + num_servers]);
diff --git a/test/cpp/qps/server_async.cc b/test/cpp/qps/server_async.cc
index 516598a0e221367e099a20b774bb0582db69439b..76575e42da356326a46026c7955b662406154e40 100644
--- a/test/cpp/qps/server_async.cc
+++ b/test/cpp/qps/server_async.cc
@@ -52,7 +52,6 @@
 #include "test/cpp/qps/qpstest.grpc.pb.h"
 #include "test/cpp/qps/server.h"
 
-
 namespace grpc {
 namespace testing {
 
@@ -98,8 +97,7 @@ class AsyncQpsServerTest : public Server {
     }
   }
   ~AsyncQpsServerTest() {
-    auto deadline = std::chrono::system_clock::now() +
-      std::chrono::seconds(10);
+    auto deadline = std::chrono::system_clock::now() + std::chrono::seconds(10);
     server_->Shutdown(deadline);
     for (auto ss = shutdown_state_.begin(); ss != shutdown_state_.end(); ++ss) {
       (*ss)->set_shutdown();
diff --git a/test/cpp/qps/server_sync.cc b/test/cpp/qps/server_sync.cc
index d930ba2464c9b57d5ac8c929a3148da987f9259e..dfaa7606179e983a53b705b850a5ea74a11a9c84 100644
--- a/test/cpp/qps/server_sync.cc
+++ b/test/cpp/qps/server_sync.cc
@@ -47,7 +47,6 @@
 #include "test/cpp/qps/server.h"
 #include "test/cpp/qps/timer.h"
 
-
 namespace grpc {
 namespace testing {
 
@@ -86,8 +85,7 @@ class TestServiceImpl GRPC_FINAL : public TestService::Service {
 class SynchronousServer GRPC_FINAL : public grpc::testing::Server {
  public:
   SynchronousServer(const ServerConfig& config, int port)
-      : impl_(MakeImpl(port)) {
-  }
+      : impl_(MakeImpl(port)) {}
 
  private:
   std::unique_ptr<grpc::Server> MakeImpl(int port) {
diff --git a/test/cpp/util/string_ref_test.cc b/test/cpp/util/string_ref_test.cc
index 465072d43ebc2597031b402bd19ba92caa6e66d6..44a298d892f9e063c8a5e611dec1dc856a2d8b91 100644
--- a/test/cpp/util/string_ref_test.cc
+++ b/test/cpp/util/string_ref_test.cc
@@ -45,8 +45,7 @@ const char kTestStringWithEmbeddedNull[] = "blah\0foo";
 const size_t kTestStringWithEmbeddedNullLength = 8;
 const char kTestUnrelatedString[] = "foo";
 
-class StringRefTest : public ::testing::Test {
-};
+class StringRefTest : public ::testing::Test {};
 
 TEST_F(StringRefTest, Empty) {
   string_ref s;
@@ -74,7 +73,8 @@ TEST_F(StringRefTest, FromString) {
 }
 
 TEST_F(StringRefTest, CopyConstructor) {
-  string_ref s1(kTestString);;
+  string_ref s1(kTestString);
+  ;
   string_ref s2(s1);
   EXPECT_EQ(s1.length(), s2.length());
   EXPECT_EQ(s1.data(), s2.data());
@@ -89,7 +89,8 @@ TEST_F(StringRefTest, FromStringWithEmbeddedNull) {
 }
 
 TEST_F(StringRefTest, Assignment) {
-  string_ref s1(kTestString);;
+  string_ref s1(kTestString);
+  ;
   string_ref s2;
   EXPECT_EQ(nullptr, s2.data());
   s2 = s1;
@@ -109,7 +110,7 @@ TEST_F(StringRefTest, Iterator) {
 TEST_F(StringRefTest, ReverseIterator) {
   string_ref s(kTestString);
   size_t i = strlen(kTestString);
-  for (auto rit = s.crbegin();  rit != s.crend(); ++rit) {
+  for (auto rit = s.crbegin(); rit != s.crend(); ++rit) {
     EXPECT_EQ(kTestString[--i], *rit);
   }
   EXPECT_EQ(0U, i);
@@ -168,9 +169,9 @@ TEST_F(StringRefTest, Find) {
   EXPECT_EQ(0U, s1.find(s1));
   EXPECT_EQ(0U, s2.find(s2));
   EXPECT_EQ(0U, s3.find(s3));
-  EXPECT_EQ(string_ref::npos,s1.find(s2) );
-  EXPECT_EQ(string_ref::npos,s2.find(s1));
-  EXPECT_EQ(string_ref::npos,s1.find(s3));
+  EXPECT_EQ(string_ref::npos, s1.find(s2));
+  EXPECT_EQ(string_ref::npos, s2.find(s1));
+  EXPECT_EQ(string_ref::npos, s1.find(s3));
   EXPECT_EQ(0U, s3.find(s1));
   EXPECT_EQ(5U, s3.find(s2));
   EXPECT_EQ(string_ref::npos, s1.find('z'));
@@ -212,4 +213,3 @@ int main(int argc, char** argv) {
   ::testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }
-
diff --git a/tools/buildgen/generate_projects.py b/tools/buildgen/generate_projects.py
index c3e2b12051626380e1e7bb13375e3bddf3c53e92..90abd703f6980950984f62a31db0fee37c460324 100755
--- a/tools/buildgen/generate_projects.py
+++ b/tools/buildgen/generate_projects.py
@@ -34,6 +34,7 @@ import os
 import shutil
 import sys
 import tempfile
+import multiprocessing
 sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), '..', 'run_tests'))
 
 assert sys.argv[1:], 'run generate_projects.sh instead of this directly'
@@ -55,7 +56,7 @@ for root, dirs, files in os.walk('templates'):
       out = out_dir + '/' + os.path.splitext(f)[0]
       if not os.path.exists(out_dir):
         os.makedirs(out_dir)
-      cmd = ['python', 'tools/buildgen/mako_renderer.py']
+      cmd = ['python2.7', 'tools/buildgen/mako_renderer.py']
       for plugin in plugins:
         cmd.append('-p')
         cmd.append(plugin)
@@ -73,13 +74,13 @@ for root, dirs, files in os.walk('templates'):
       cmd.append(root + '/' + f)
       jobs.append(jobset.JobSpec(cmd, shortname=out))
 
-jobset.run(jobs)
+jobset.run(jobs, maxjobs=multiprocessing.cpu_count())
 
 if test is not None:
   for s, g in test.iteritems():
     if os.path.isfile(g):
-      assert(0 == os.system('diff %s %s' % (s, g)))
+      assert 0 == os.system('diff %s %s' % (s, g)), s
       os.unlink(g)
     else:
-      assert(0 == os.system('diff -r %s %s' % (s, g)))
+      assert 0 == os.system('diff -r %s %s' % (s, g)), s
       shutil.rmtree(g, ignore_errors=True)
diff --git a/tools/codegen/core/gen_hpack_tables.c b/tools/codegen/core/gen_hpack_tables.c
index d924aba6022ecadf77bbb0a6c3fae541c7b05ef8..bae4e4cd7340f3b591cac3892a68090e6164ba8b 100644
--- a/tools/codegen/core/gen_hpack_tables.c
+++ b/tools/codegen/core/gen_hpack_tables.c
@@ -71,7 +71,11 @@ static unsigned char prefix_mask(unsigned char prefix_len) {
   unsigned char i;
   unsigned char out = 0;
   for (i = 0; i < prefix_len; i++) {
-    out |= (unsigned char)(1 << (7 - i));
+    /* NB: the following integer arithmetic operation needs to be in its
+     * expanded form due to the "integral promotion" performed (see section
+     * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+     * is then required to avoid the compiler warning */
+    out = (unsigned char)(out | (unsigned char)(1 << (7 - i)));
   }
   return out;
 }
@@ -92,7 +96,12 @@ static void generate_first_byte_lut(void) {
     chrspec = NULL;
     for (j = 0; j < num_fields; j++) {
       if ((prefix_mask(fields[j].prefix_length) & i) == fields[j].prefix) {
-        suffix = suffix_mask(fields[j].prefix_length) & (unsigned char)i;
+        /* NB: the following integer arithmetic operation needs to be in its
+         * expanded form due to the "integral promotion" performed (see section
+         * 3.2.1.1 of the C89 draft standard). A cast to the smaller container
+         * type is then required to avoid the compiler warning */
+        suffix = (unsigned char)(suffix_mask(fields[j].prefix_length) &
+                                 (unsigned char)i);
         if (suffix == suffix_mask(fields[j].prefix_length)) {
           if (fields[j].index != 2) continue;
         } else if (suffix == 0) {
diff --git a/tools/codegen/core/gen_legal_metadata_characters.c b/tools/codegen/core/gen_legal_metadata_characters.c
index 2ffda54a21f0d69b586f2f2a5d74d533487a2f48..677fa5c15569a842731af80a1dc9c5e78d76a664 100644
--- a/tools/codegen/core/gen_legal_metadata_characters.c
+++ b/tools/codegen/core/gen_legal_metadata_characters.c
@@ -41,7 +41,12 @@ static unsigned char legal_bits[256 / 8];
 static void legal(int x) {
   int byte = x / 8;
   int bit = x % 8;
-  legal_bits[byte] |= (unsigned char)(1 << bit);
+  /* NB: the following integer arithmetic operation needs to be in its
+   * expanded form due to the "integral promotion" performed (see section
+   * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+   * is then required to avoid the compiler warning */
+  legal_bits[byte] =
+      (unsigned char)((legal_bits[byte] | (unsigned char)(1 << bit)));
 }
 
 static void dump(void) {
diff --git a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
index 5aa265800dedbd6b54deea59f055831d71274650..5da9dfabbac0b6cee05f99612628867aad3897d6 100755
--- a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
+++ b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
@@ -4,7 +4,7 @@
 DIRS="src/core src/cpp test/core test/cpp include"
 
 # file matching patterns to check
-GLOB="*.h *.cpp"
+GLOB="*.h *.c *.cc"
 
 # clang format command
 CLANG_FORMAT=clang-format-3.6
diff --git a/tools/dockerfile/grpc_cxx/Dockerfile b/tools/dockerfile/grpc_cxx/Dockerfile
index ac09e25e404329d4af260233be1a56f4061eae8c..82887df95c76ca7d964202633851944e59533585 100644
--- a/tools/dockerfile/grpc_cxx/Dockerfile
+++ b/tools/dockerfile/grpc_cxx/Dockerfile
@@ -54,4 +54,4 @@ ADD service_account service_account
 ADD cacerts cacerts
 ENV GRPC_DEFAULT_SSL_ROOTS_FILE_PATH /cacerts/roots.pem
 
-CMD ["/var/local/git/grpc/bins/opt/interop_server", "--enable_ssl", "--port=8010"]
+CMD ["/var/local/git/grpc/bins/opt/interop_server", "--use_tls", "--port=8010"]
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index a7a3da4d2001adbb6fb84e69b94ae5101976547f..5658a102d75d36deccc0e1aaa99210a32c3253a2 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -855,6 +855,7 @@ src/core/json/json_writer.h \
 src/core/profiling/timers.h \
 src/core/statistics/census_interface.h \
 src/core/statistics/census_rpc_stats.h \
+src/core/surface/api_trace.h \
 src/core/surface/byte_buffer_queue.h \
 src/core/surface/call.h \
 src/core/surface/channel.h \
@@ -991,6 +992,7 @@ src/core/json/json_string.c \
 src/core/json/json_writer.c \
 src/core/profiling/basic_timers.c \
 src/core/profiling/stap_timers.c \
+src/core/surface/api_trace.c \
 src/core/surface/byte_buffer.c \
 src/core/surface/byte_buffer_queue.c \
 src/core/surface/byte_buffer_reader.c \
@@ -1008,7 +1010,6 @@ src/core/surface/metadata_array.c \
 src/core/surface/server.c \
 src/core/surface/server_chttp2.c \
 src/core/surface/server_create.c \
-src/core/surface/surface_trace.c \
 src/core/surface/version.c \
 src/core/transport/chttp2/alpn.c \
 src/core/transport/chttp2/bin_encoder.c \
diff --git a/tools/gce_setup/grpc_docker.sh b/tools/gce_setup/grpc_docker.sh
index 84263ad6b993716ead3c4a8150823591abbeea3e..fdb7736327306ab50840399d0d2db56bff79c510 100755
--- a/tools/gce_setup/grpc_docker.sh
+++ b/tools/gce_setup/grpc_docker.sh
@@ -1477,7 +1477,7 @@ grpc_cloud_prod_auth_compute_engine_creds_gen_node_cmd() {
 #   cmd=$($grpc_gen_test_cmd $flags)
 grpc_interop_gen_cxx_cmd() {
     local cmd_prefix="sudo docker run grpc/cxx";
-    local test_script="/var/local/git/grpc/bins/opt/interop_client --enable_ssl";
+    local test_script="/var/local/git/grpc/bins/opt/interop_client --use_tls";
     local the_cmd="$cmd_prefix $test_script $@";
     echo $the_cmd
 }
@@ -1489,7 +1489,7 @@ grpc_interop_gen_cxx_cmd() {
 #   cmd=$($grpc_gen_test_cmd $flags)
 grpc_cloud_prod_gen_cxx_cmd() {
     local cmd_prefix="sudo docker run grpc/cxx";
-    local test_script="/var/local/git/grpc/bins/opt/interop_client --enable_ssl --use_prod_roots";
+    local test_script="/var/local/git/grpc/bins/opt/interop_client --use_tls --use_prod_roots";
     local gfe_flags=$(_grpc_prod_gfe_flags)
     local the_cmd="$cmd_prefix $test_script $gfe_flags $@";
     echo $the_cmd
@@ -1502,7 +1502,7 @@ grpc_cloud_prod_gen_cxx_cmd() {
 #   cmd=$($grpc_gen_test_cmd $flags)
 grpc_cloud_prod_auth_service_account_creds_gen_cxx_cmd() {
     local cmd_prefix="sudo docker run grpc/cxx";
-    local test_script="/var/local/git/grpc/bins/opt/interop_client --enable_ssl --use_prod_roots";
+    local test_script="/var/local/git/grpc/bins/opt/interop_client --use_tls --use_prod_roots";
     local gfe_flags=$(_grpc_prod_gfe_flags)
     local added_gfe_flags=$(_grpc_svc_acc_test_flags)
     local the_cmd="$cmd_prefix $test_script $gfe_flags $added_gfe_flags $@";
@@ -1516,7 +1516,7 @@ grpc_cloud_prod_auth_service_account_creds_gen_cxx_cmd() {
 #   cmd=$($grpc_gen_test_cmd $flags)
 grpc_cloud_prod_auth_compute_engine_creds_gen_cxx_cmd() {
     local cmd_prefix="sudo docker run grpc/cxx";
-    local test_script="/var/local/git/grpc/bins/opt/interop_client --enable_ssl --use_prod_roots";
+    local test_script="/var/local/git/grpc/bins/opt/interop_client --use_tls --use_prod_roots";
     local gfe_flags=$(_grpc_prod_gfe_flags)
     local added_gfe_flags=$(_grpc_gce_test_flags)
     local the_cmd="$cmd_prefix $test_script $gfe_flags $added_gfe_flags $@";
@@ -1530,7 +1530,7 @@ grpc_cloud_prod_auth_compute_engine_creds_gen_cxx_cmd() {
 #   cmd=$($grpc_gen_test_cmd $flags)
 grpc_cloud_prod_auth_jwt_token_creds_gen_cxx_cmd() {
     local cmd_prefix="sudo docker run grpc/cxx";
-    local test_script="/var/local/git/grpc/bins/opt/interop_client --enable_ssl --use_prod_roots";
+    local test_script="/var/local/git/grpc/bins/opt/interop_client --use_tls --use_prod_roots";
     local gfe_flags=$(_grpc_prod_gfe_flags)
     local added_gfe_flags=$(_grpc_jwt_token_test_flags)
     local the_cmd="$cmd_prefix $test_script $gfe_flags $added_gfe_flags $@";
diff --git a/tools/jenkins/build_docker_and_run_tests.sh b/tools/jenkins/build_docker_and_run_tests.sh
index 9f97f39e75d6f99c8955e9881788a03e575b7871..8b7809f2e23d213493f2e8871c4c6b56ba65b77a 100755
--- a/tools/jenkins/build_docker_and_run_tests.sh
+++ b/tools/jenkins/build_docker_and_run_tests.sh
@@ -37,8 +37,13 @@ cd `dirname $0`/../..
 git_root=`pwd`
 cd -
 
+# Ensure existence of ccache directory
 mkdir -p /tmp/ccache
 
+# Ensure existence of the home directory for XDG caches (e.g. what pip uses for
+# its cache location now that --download-cache is deprecated).
+mkdir -p /tmp/xdg-cache-home
+
 # Create a local branch so the child Docker script won't complain
 git branch -f jenkins-docker
 
@@ -57,9 +62,11 @@ docker run \
   -e "config=$config" \
   -e "arch=$arch" \
   -e CCACHE_DIR=/tmp/ccache \
+  -e XDG_CACHE_HOME=/tmp/xdg-cache-home \
   -i $TTY_FLAG \
   -v "$git_root:/var/local/jenkins/grpc" \
   -v /tmp/ccache:/tmp/ccache \
+  -v /tmp/xdg-cache-home:/tmp/xdg-cache-home \
   -v /var/run/docker.sock:/var/run/docker.sock \
   -v $(which docker):/bin/docker \
   -w /var/local/git/grpc \
@@ -74,6 +81,10 @@ then
   docker cp "$DOCKER_CID:/var/local/git/grpc/$XML_REPORT" $git_root
 fi
 
+docker cp "$DOCKER_CID:/var/local/git/grpc/reports.zip" $git_root || true
+unzip $git_root/reports.zip -d $git_root || true
+rm -f reports.zip
+
 # remove the container, possibly killing it first
 docker rm -f $DOCKER_CID || true
 
diff --git a/tools/jenkins/build_interop_image.sh b/tools/jenkins/build_interop_image.sh
new file mode 100755
index 0000000000000000000000000000000000000000..3664eed84d9b0567f1ae53c10f0453f3593789e3
--- /dev/null
+++ b/tools/jenkins/build_interop_image.sh
@@ -0,0 +1,101 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# This script is invoked by run_interop_tests.py to build the docker image
+# for interop testing. You should never need to call this script on your own.
+
+set -x
+
+cd `dirname $0`/../..
+GRPC_ROOT=`pwd`
+MOUNT_ARGS="-v $GRPC_ROOT:/var/local/jenkins/grpc:ro"
+
+GRPC_JAVA_ROOT=`cd ../grpc-java && pwd`
+if [ "$GRPC_JAVA_ROOT" != "" ]
+then
+  MOUNT_ARGS+=" -v $GRPC_JAVA_ROOT:/var/local/jenkins/grpc-java:ro"
+else
+  echo "WARNING: grpc-java not found, it won't be mounted to the docker container."
+fi
+
+GRPC_GO_ROOT=`cd ../grpc-go && pwd`
+if [ "$GRPC_GO_ROOT" != "" ]
+then
+  MOUNT_ARGS+=" -v $GRPC_GO_ROOT:/var/local/jenkins/grpc-go:ro"
+else
+  echo "WARNING: grpc-go not found, it won't be mounted to the docker container."
+fi
+
+mkdir -p /tmp/ccache
+
+# Params:
+#  INTEROP_IMAGE - name of tag of the final interop image
+#  BASE_NAME - base name used to locate the base Dockerfile and build script
+#  TTY_FLAG - optional -t flag to make docker allocate tty.
+
+# Mount service account dir if available.
+# If service_directory does not contain the service account JSON file,
+# some of the tests will fail.
+if [ -e $HOME/service_account ]
+then
+  MOUNT_ARGS+=" -v $HOME/service_account:/var/local/jenkins/service_account:ro"
+fi
+
+# Use image name based on Dockerfile checksum
+BASE_IMAGE=${BASE_NAME}_base:`sha1sum tools/jenkins/$BASE_NAME/Dockerfile | cut -f1 -d\ `
+
+# Make sure base docker image has been built. Should be instantaneous if so.
+docker build -t $BASE_IMAGE --force-rm=true tools/jenkins/$BASE_NAME || exit $?
+
+# Create a local branch so the child Docker script won't complain
+git branch -f jenkins-docker
+
+CIDFILE=`mktemp -u --suffix=.cid`
+
+# Prepare image for interop tests, commit it on success.
+(docker run \
+  -e CCACHE_DIR=/tmp/ccache \
+  -i $TTY_FLAG \
+  $MOUNT_ARGS \
+  -v /tmp/ccache:/tmp/ccache \
+  --cidfile=$CIDFILE \
+  $BASE_IMAGE \
+  bash -l /var/local/jenkins/grpc/tools/jenkins/$BASE_NAME/build_interop.sh \
+  && docker commit `cat $CIDFILE` $INTEROP_IMAGE \
+  && echo "Successfully built image $INTEROP_IMAGE")
+EXITCODE=$?
+
+# remove intermediate container, possibly killing it first
+docker rm -f `cat $CIDFILE`
+
+# remove the cidfile
+rm -rf `cat $CIDFILE`
+
+exit $EXITCODE
diff --git a/tools/jenkins/docker_run_tests.sh b/tools/jenkins/docker_run_tests.sh
index 781bff26b93bd913696d902e9cd012d9d28470d3..8bafeea6200f290ec78a1697254613f1688036ea 100755
--- a/tools/jenkins/docker_run_tests.sh
+++ b/tools/jenkins/docker_run_tests.sh
@@ -28,17 +28,36 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
-# This script is invoked by build_docker_and_run_tests.py inside a docker
+# This script is invoked by build_docker_and_run_tests.sh inside a docker
 # container. You should never need to call this script on your own.
+
 set -e
 
 export CONFIG=$config
 export ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer-3.5
 
+# Ensure that programs depending on current-user-ownership of cache directories
+# are satisfied (it's being mounted from outside the image).
+chown `whoami` $XDG_CACHE_HOME
+
 mkdir -p /var/local/git
 git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
 
 nvm use 0.12
 rvm use ruby-2.1
 
+mkdir -p reports
+
 $RUN_TESTS_COMMAND
+
+cd reports
+echo '<html><head></head><body>' > index.html
+find . -maxdepth 1 -mindepth 1 -type d | sort | while read d ; do
+  d=${d#*/}
+  n=${d//_/ }
+  echo "<a href='$d/index.html'>$n</a><br />" >> index.html
+done
+echo '</body></html>' >> index.html
+cd ..
+
+zip -r reports.zip reports
diff --git a/tools/jenkins/grpc_interop_csharp/Dockerfile b/tools/jenkins/grpc_interop_csharp/Dockerfile
new file mode 100644
index 0000000000000000000000000000000000000000..3789cd3203842cbde3e195a6f448b4a359450ece
--- /dev/null
+++ b/tools/jenkins/grpc_interop_csharp/Dockerfile
@@ -0,0 +1,92 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+#################
+# C# dependencies
+
+# Update to a newer version of mono
+RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
+RUN echo "deb http://download.mono-project.com/repo/debian wheezy main" | tee /etc/apt/sources.list.d/mono-xamarin.list
+RUN echo "deb http://download.mono-project.com/repo/debian wheezy-apache24-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
+RUN echo "deb http://download.mono-project.com/repo/debian wheezy-libjpeg62-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
+RUN echo "deb http://download.mono-project.com/repo/debian wheezy-libtiff-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
+
+# Install dependencies
+RUN apt-get update && apt-get -y dist-upgrade && apt-get install -y \
+    mono-devel \
+    nunit \
+    nunit-console \
+    monodevelop
+
+# Download NuGet
+RUN cd /var/local && wget www.nuget.org/NuGet.exe
+ENV NUGET mono /var/local/NuGet.exe
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/run_tests/run_interops_test.sh b/tools/jenkins/grpc_interop_csharp/build_interop.sh
similarity index 53%
rename from tools/run_tests/run_interops_test.sh
rename to tools/jenkins/grpc_interop_csharp/build_interop.sh
index 9be253af46088a7cb41f127808b3e76bd35a050a..8fde687900a380025ccd023adc68f73d47eb1732 100755
--- a/tools/run_tests/run_interops_test.sh
+++ b/tools/jenkins/grpc_interop_csharp/build_interop.sh
@@ -1,5 +1,4 @@
-#!/bin/sh
-
+#!/bin/bash
 # Copyright 2015, Google Inc.
 # All rights reserved.
 #
@@ -28,27 +27,21 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds C# interop server and client in a base image.
+set -e
 
-language=$1
-test_case=$2
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
 
-set -e
-if [ "$language" = "c++" ]
-then
-  sudo docker run grpc/cxx /var/local/git/grpc/bins/opt/interop_client --enable_ssl --use_prod_roots --server_host_override=grpc-test.sandbox.google.com --server_host=grpc-test.sandbox.google.com --server_port=443 --test_case=$test_case
-elif [ "$language" = "node" ]
-then
-  sudo docker run grpc/node /usr/bin/nodejs /var/local/git/grpc/src/node/interop/interop_client.js --use_tls=true --use_test_ca=true --server_port=443 --server_host=grpc-test.sandbox.google.com --server_host_override=grpc-test.sandbox.google.com --test_case=$test_case
-elif [ "$language" = "ruby" ]
-then
-  cmd_prefix="SSL_CERT_FILE=/cacerts/roots.pem ruby /var/local/git/grpc/src/ruby/bin/interop/interop_client.rb --use_tls --server_port=443 --server_host=grpc-test.sandbox.google.com --server_host_override=grpc-test.sandbox.google.com "
-  cmd="$cmd_prefix --test_case=$test_case"
-  sudo docker run grpc/ruby bin/bash -l -c '$cmd'
-elif [ "$language" = "php" ]
-then
-  sudo docker run -e SSL_CERT_FILE=/cacerts/roots.pem grpc/php /var/local/git/grpc/src/php/bin/interop_client.sh --server_port=443 --server_host=grpc-test.sandbox.google.com --server_host_override=grpc-test.sandbox.google.com --test_case=$test_case
-else
-  echo "interop testss not added for $language"
-  exit 1
-fi
+# copy service account keys if available
+cp -r /var/local/jenkins/service_account $HOME || true
+
+cd /var/local/git/grpc
+
+make install-certs
 
+# build C# interop client & server
+make install_grpc_csharp_ext
+(cd src/csharp && mono /var/local/NuGet.exe restore Grpc.sln)
+(cd src/csharp && xbuild Grpc.sln)
diff --git a/tools/jenkins/grpc_interop_cxx/Dockerfile b/tools/jenkins/grpc_interop_cxx/Dockerfile
new file mode 100644
index 0000000000000000000000000000000000000000..1fa190753304cc86466d738391f8ef89c0e8c055
--- /dev/null
+++ b/tools/jenkins/grpc_interop_cxx/Dockerfile
@@ -0,0 +1,75 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+##################
+# C++ dependencies
+RUN apt-get update && apt-get -y install libgflags-dev libgtest-dev libc++-dev clang
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/grpc_interop_cxx/build_interop.sh b/tools/jenkins/grpc_interop_cxx/build_interop.sh
new file mode 100755
index 0000000000000000000000000000000000000000..1c0828d23a6ea6ced82f87b80fc91ce7c306bcde
--- /dev/null
+++ b/tools/jenkins/grpc_interop_cxx/build_interop.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds C++ interop server and client in a base image.
+set -e
+
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
+
+# copy service account keys if available
+cp -r /var/local/jenkins/service_account $HOME || true
+
+cd /var/local/git/grpc
+
+make install-certs
+
+# build C++ interop client & server
+make interop_client interop_server
diff --git a/tools/jenkins/grpc_interop_go/Dockerfile b/tools/jenkins/grpc_interop_go/Dockerfile
new file mode 100644
index 0000000000000000000000000000000000000000..bb60f09f24748254da3bfc3cfb2ffa2b08f8ba88
--- /dev/null
+++ b/tools/jenkins/grpc_interop_go/Dockerfile
@@ -0,0 +1,36 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+FROM golang:1.4
+
+# Using login shell removes Go from path, so we add it.
+RUN ln -s /usr/src/go/bin/go /usr/local/bin
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/grpc_interop_go/build_interop.sh b/tools/jenkins/grpc_interop_go/build_interop.sh
new file mode 100755
index 0000000000000000000000000000000000000000..05fc6dfdfb62af86ddace04317f2d348f4c26d20
--- /dev/null
+++ b/tools/jenkins/grpc_interop_go/build_interop.sh
@@ -0,0 +1,53 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds Go interop server and client in a base image.
+set -e
+
+# Clone just the grpc-go source code without any dependencies.
+# We are cloning from a local git repo that contains the right revision
+# to test instead of using "go get" to download from Github directly.
+git clone --recursive /var/local/jenkins/grpc-go src/gooogle.golang.org/grpc
+
+# copy service account keys if available
+cp -r /var/local/jenkins/service_account $HOME || true
+
+# Get dependencies from GitHub
+# NOTE: once grpc-go dependencies change, this needs to be updated manually
+# but we don't expect this to happen any time soon.
+go get github.com/golang/protobuf/proto
+go get golang.org/x/net/context
+go get golang.org/x/net/trace
+go get golang.org/x/oauth2
+go get google.golang.org/cloud
+
+# Build the interop client and server
+(cd src/google.golang.org/grpc/interop/client && go install)
+(cd src/google.golang.org/grpc/interop/server && go install)
diff --git a/tools/jenkins/grpc_interop_java/Dockerfile b/tools/jenkins/grpc_interop_java/Dockerfile
new file mode 100644
index 0000000000000000000000000000000000000000..1ec24a95e3869f9c9daae635a9012df89af03d22
--- /dev/null
+++ b/tools/jenkins/grpc_interop_java/Dockerfile
@@ -0,0 +1,58 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+FROM debian:jessie
+
+# Install JDK 8 and Git
+#
+# TODO(temiola): simplify this if/when a simpler process is available.
+#
+RUN echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections && \
+  echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list && \
+  echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list && \
+  apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886 && \
+  apt-get update && \
+  apt-get -y install \
+      git \
+      libapr1 \
+      oracle-java8-installer \
+      && \
+  apt-get clean && rm -r /var/cache/oracle-jdk8-installer/
+
+ENV JAVA_HOME /usr/lib/jvm/java-8-oracle
+ENV PATH $PATH:$JAVA_HOME/bin
+
+# Trigger download of as many Gradle artifacts as possible.
+RUN git clone --recursive --depth 1 https://github.com/grpc/grpc-java.git && \
+  cd grpc-java && \
+  ./gradlew build -PskipCodegen=true && \
+  rm -r "$(pwd)"
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/grpc_interop_java/build_interop.sh b/tools/jenkins/grpc_interop_java/build_interop.sh
new file mode 100755
index 0000000000000000000000000000000000000000..9997c63308b50fa739840c84b7d0100d47570b60
--- /dev/null
+++ b/tools/jenkins/grpc_interop_java/build_interop.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds Java interop server and client in a base image.
+set -e
+
+mkdir -p /var/local/git
+git clone --recursive --depth 1 /var/local/jenkins/grpc-java /var/local/git/grpc-java
+
+# copy service account keys if available
+cp -r /var/local/jenkins/service_account $HOME || true
+
+cd /var/local/git/grpc-java
+
+./gradlew :grpc-interop-testing:installDist -PskipCodegen=true
diff --git a/tools/jenkins/grpc_interop_node/Dockerfile b/tools/jenkins/grpc_interop_node/Dockerfile
new file mode 100644
index 0000000000000000000000000000000000000000..587227b94294daec0c98f3de898a6f949f0a8af4
--- /dev/null
+++ b/tools/jenkins/grpc_interop_node/Dockerfile
@@ -0,0 +1,79 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+##################
+# Node dependencies
+
+# Install nvm
+RUN touch .profile
+RUN curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.25.4/install.sh | bash
+RUN /bin/bash -l -c "nvm install 0.12"
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/grpc_interop_node/build_interop.sh b/tools/jenkins/grpc_interop_node/build_interop.sh
new file mode 100755
index 0000000000000000000000000000000000000000..84e25e330886ab3c15cacea0af121a25e49bd3d3
--- /dev/null
+++ b/tools/jenkins/grpc_interop_node/build_interop.sh
@@ -0,0 +1,49 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds Node interop server and client in a base image.
+set -e
+
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
+
+# copy service account keys if available
+cp -r /var/local/jenkins/service_account $HOME || true
+
+cd /var/local/git/grpc
+nvm use 0.12
+nvm alias default 0.12  # prevent the need to run 'nvm use' in every shell
+
+make install-certs
+
+# build Node interop client & server
+npm install -g node-gyp
+make install_c -C /var/local/git/grpc
+(cd src/node && npm install && node-gyp rebuild)
diff --git a/tools/jenkins/grpc_interop_php/Dockerfile b/tools/jenkins/grpc_interop_php/Dockerfile
new file mode 100644
index 0000000000000000000000000000000000000000..0edc3c174d4561777758c9aa44926f268a1e922f
--- /dev/null
+++ b/tools/jenkins/grpc_interop_php/Dockerfile
@@ -0,0 +1,112 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+##################
+# Ruby dependencies
+
+# Install rvm
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+RUN \curl -sSL https://get.rvm.io | bash -s stable
+
+# Install Ruby 2.1
+RUN /bin/bash -l -c "rvm install ruby-2.1"
+RUN /bin/bash -l -c "rvm use --default ruby-2.1"
+RUN /bin/bash -l -c "echo 'gem: --no-ri --no-rdoc' > ~/.gemrc"
+RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.1' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-ri --no-rdoc"
+
+##################
+# PHP dependencies
+
+# Install dependencies
+
+RUN /bin/bash -l -c "echo 'deb http://packages.dotdeb.org wheezy-php55 all' \
+    >> /etc/apt/sources.list.d/dotdeb.list"
+RUN /bin/bash -l -c "echo 'deb-src http://packages.dotdeb.org wheezy-php55 all' \
+    >> /etc/apt/sources.list.d/dotdeb.list"
+RUN wget http://www.dotdeb.org/dotdeb.gpg -O- | apt-key add -
+
+RUN apt-get update && apt-get install -y \
+    git php5 php5-dev phpunit unzip
+
+# ronn: a ruby tool used to convert markdown to man pages, used during the
+# install of Protobuf extensions
+#
+# rake: a ruby version of make used to build the PHP Protobuf extension
+RUN /bin/bash -l -c "rvm all do gem install ronn rake"
+
+ENV DEBIAN_FRONTEND noniteractive
+
+# Install composer
+RUN curl -sS https://getcomposer.org/installer | php
+RUN mv composer.phar /usr/local/bin/composer
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/grpc_interop_php/build_interop.sh b/tools/jenkins/grpc_interop_php/build_interop.sh
new file mode 100755
index 0000000000000000000000000000000000000000..cd9d67804af685ed987362423e401be1d32a98ba
--- /dev/null
+++ b/tools/jenkins/grpc_interop_php/build_interop.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds PHP interop server and client in a base image.
+set -e
+
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
+
+# copy service account keys if available
+cp -r /var/local/jenkins/service_account $HOME || true
+
+cd /var/local/git/grpc
+rvm --default use ruby-2.1
+
+make install-certs
+
+# gRPC core and protobuf need to be installed
+make install
+
+# Download the patched PHP protobuf so that PHP gRPC clients can be generated
+# from proto3 schemas.
+git clone https://github.com/stanley-cheung/Protobuf-PHP.git /var/local/git/protobuf-php
+
+(cd src/php/ext/grpc && phpize && ./configure && make)
+
+(cd third_party/protobuf && make install)
+
+(cd /var/local/git/protobuf-php \
+  && rvm all do rake pear:package version=1.0 \
+  && pear install Protobuf-1.0.tgz)
+
+(cd src/php && composer install)
+
+(cd src/php && protoc-gen-php -i tests/interop/ -o tests/interop/ tests/interop/test.proto)
diff --git a/tools/jenkins/grpc_interop_ruby/Dockerfile b/tools/jenkins/grpc_interop_ruby/Dockerfile
new file mode 100644
index 0000000000000000000000000000000000000000..ff201fa291e52147bb4d68465144bd7d483dad5a
--- /dev/null
+++ b/tools/jenkins/grpc_interop_ruby/Dockerfile
@@ -0,0 +1,87 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+
+##################
+# Ruby dependencies
+
+# Install rvm
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+RUN \curl -sSL https://get.rvm.io | bash -s stable
+
+# Install Ruby 2.1
+RUN /bin/bash -l -c "rvm install ruby-2.1"
+RUN /bin/bash -l -c "rvm use --default ruby-2.1"
+RUN /bin/bash -l -c "echo 'gem: --no-ri --no-rdoc' > ~/.gemrc"
+RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.1' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-ri --no-rdoc"
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/grpc_interop_ruby/build_interop.sh b/tools/jenkins/grpc_interop_ruby/build_interop.sh
new file mode 100755
index 0000000000000000000000000000000000000000..c5023f5c1d4e18cbe371b5dfbcf7fd4f2c39782b
--- /dev/null
+++ b/tools/jenkins/grpc_interop_ruby/build_interop.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds Ruby interop server and client in a base image.
+set -e
+
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
+
+# copy service account keys if available
+cp -r /var/local/jenkins/service_account $HOME || true
+
+cd /var/local/git/grpc
+rvm --default use ruby-2.1
+
+make install-certs
+
+# build Ruby interop client and server
+(cd src/ruby && gem update bundler && bundle && rake compile:grpc)
diff --git a/tools/jenkins/grpc_jenkins_slave/Dockerfile b/tools/jenkins/grpc_jenkins_slave/Dockerfile
index 7248f974092b665f40a19b35b042f1f62e7bd79b..5f2b425c8c27e2ef171365c6e4126546c23c88a0 100644
--- a/tools/jenkins/grpc_jenkins_slave/Dockerfile
+++ b/tools/jenkins/grpc_jenkins_slave/Dockerfile
@@ -32,7 +32,7 @@
 
 FROM debian:jessie
 
-# Install Git.
+# Install Git and basic packages.
 RUN apt-get update && apt-get install -y \
   autoconf \
   autotools-dev \
@@ -44,6 +44,7 @@ RUN apt-get update && apt-get install -y \
   gcc-multilib \
   git \
   gyp \
+  lcov \
   libc6 \
   libc6-dbg \
   libc6-dev \
@@ -125,10 +126,11 @@ RUN /bin/bash -l -c "gem install bundler --no-ri --no-rdoc"
 RUN apt-get update && apt-get install -y \
     python-all-dev \
     python3-all-dev \
-    python-pip \
-    python-virtualenv
+    python-pip
 
 # Install Python packages from PyPI
+RUN pip install pip --upgrade
+RUN pip install virtualenv
 RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.0.0a2
 
 # For sanity test
diff --git a/tools/jenkins/grpc_jenkins_slave_32bits/Dockerfile b/tools/jenkins/grpc_jenkins_slave_32bits/Dockerfile
index c1ff85c3ca1e9df179b710e9149c3103f8f3e3ba..81a039909160acc66f9a3222caf9011c7a2a9112 100644
--- a/tools/jenkins/grpc_jenkins_slave_32bits/Dockerfile
+++ b/tools/jenkins/grpc_jenkins_slave_32bits/Dockerfile
@@ -32,7 +32,7 @@
 
 FROM 32bit/debian:jessie
 
-# Install Git.
+# Install Git and basic packages.
 RUN apt-get update && apt-get install -y \
   autoconf \
   autotools-dev \
@@ -44,6 +44,7 @@ RUN apt-get update && apt-get install -y \
   gcc-multilib \
   git \
   gyp \
+  lcov \
   libc6 \
   libc6-dbg \
   libc6-dev \
diff --git a/tools/jenkins/run_distribution.sh b/tools/jenkins/run_distribution.sh
index 49b7d306d16ba5ff4bbcc40e4a1b0d0448656e42..64c60f15027d6289a8a11a1f626a9931b5eded1e 100755
--- a/tools/jenkins/run_distribution.sh
+++ b/tools/jenkins/run_distribution.sh
@@ -54,7 +54,7 @@ if [ "$platform" == "linux" ]; then
     docker build -t $DOCKER_IMAGE_NAME tools/jenkins/grpc_linuxbrew
 
     # run per-language homebrew installation script
-    docker run $DOCKER_IMAGE_NAME bash -l \
+    docker run --rm=true $DOCKER_IMAGE_NAME bash -l \
       -c "nvm use 0.12; \
           npm set unsafe-perm true; \
           rvm use ruby-2.1; \
diff --git a/tools/jenkins/run_jenkins.sh b/tools/jenkins/run_jenkins.sh
index c4a01a7d6636298daacb8f2be54c33f05c77d6b6..f79e739f6aecb92648165c79f134918bb2ff7cf1 100755
--- a/tools/jenkins/run_jenkins.sh
+++ b/tools/jenkins/run_jenkins.sh
@@ -56,9 +56,6 @@ then
 
   ./tools/run_tests/run_tests.py --use_docker -t -l $language -c $config -x report.xml $@ || true
 
-elif [ "$platform" == "interop" ]
-then
-  python tools/run_tests/run_interops.py --language=$language $@
 elif [ "$platform" == "windows" ]
 then
   echo "building $language on Windows"
@@ -83,6 +80,12 @@ then
   echo "building $language on FreeBSD"
 
   MAKE=gmake ./tools/run_tests/run_tests.py -t -l $language -c $config -x report.xml $@ || true
+
+elif [ "$platform" == "interop" ]
+then
+  echo "building interop tests for language $language"
+
+  ./tools/run_tests/run_interop_tests.py --use_docker -t -l $language --cloud_to_prod --server all || true
 else
   echo "Unknown platform $platform"
   exit 1
diff --git a/tools/run_tests/build_node.sh b/tools/run_tests/build_node.sh
index 95ffb94c6eada11b03a3eb68024136a0085b6ca3..faa7b624b8e44e8a7e62cc4fd6aa48944f7f4877 100755
--- a/tools/run_tests/build_node.sh
+++ b/tools/run_tests/build_node.sh
@@ -36,9 +36,4 @@ CONFIG=${CONFIG:-opt}
 # change to grpc repo root
 cd $(dirname $0)/../..
 
-export CXXFLAGS=-I`pwd`/include
-export LDFLAGS=-L`pwd`/libs/$CONFIG
-
-cd src/node
-
 npm install --unsafe-perm
diff --git a/tools/run_tests/build_python.sh b/tools/run_tests/build_python.sh
index 2efc2c714d09eaed0eba5509ab405c51e9feae42..24cf6ba7c88e5222afd8a73fe72e1078536dc663 100755
--- a/tools/run_tests/build_python.sh
+++ b/tools/run_tests/build_python.sh
@@ -39,6 +39,33 @@ GRPCIO=$ROOT/src/python/grpcio
 GRPCIO_TEST=$ROOT/src/python/grpcio_test
 GRPCIO_HEALTH_CHECKING=$ROOT/src/python/grpcio_health_checking
 
+install_grpcio_deps() {
+  cd $GRPCIO
+  pip install -r requirements.txt
+}
+install_grpcio_test_deps() {
+  cd $GRPCIO_TEST
+  pip install -r requirements.txt
+}
+
+install_grpcio() {
+  CFLAGS="-I$ROOT/include -std=c89" LDFLAGS=-L$ROOT/libs/$CONFIG GRPC_PYTHON_BUILD_WITH_CYTHON=1 pip install $GRPCIO
+}
+install_grpcio_test() {
+  pip install $GRPCIO_TEST
+}
+install_grpcio_health_checking() {
+  pip install $GRPCIO_HEALTH_CHECKING
+}
+
+# Cleans the environment of previous installations
+clean_grpcio_all() {
+  (yes | pip uninstall grpcio) || true
+  (yes | pip uninstall grpcio_test) || true
+  (yes | pip uninstall grpcio_health_checking) || true
+}
+
+# Builds the testing environment.
 make_virtualenv() {
   virtualenv_name="python"$1"_virtual_environment"
   if [ ! -d $virtualenv_name ]
@@ -48,33 +75,29 @@ make_virtualenv() {
     source $virtualenv_name/bin/activate
 
     # Install grpcio
-    cd $GRPCIO
-    pip install -r requirements.txt
-    CFLAGS="-I$ROOT/include -std=c89" LDFLAGS=-L$ROOT/libs/$CONFIG GRPC_PYTHON_BUILD_WITH_CYTHON=1 pip install $GRPCIO
+    install_grpcio_deps
+    install_grpcio
 
     # Install grpcio_test
-    cd $GRPCIO_TEST
-    pip install -r requirements.txt
-    pip install $GRPCIO_TEST
+    install_grpcio_test_deps
+    install_grpcio_test
 
     # Install grpcio_health_checking
-    pip install $GRPCIO_HEALTH_CHECKING
+    install_grpcio_health_checking
   else
     source $virtualenv_name/bin/activate
     # Uninstall and re-install the packages we care about. Don't use
     # --force-reinstall or --ignore-installed to avoid propagating this
     # unnecessarily to dependencies. Don't use --no-deps to avoid missing
     # dependency upgrades.
-    (yes | pip uninstall grpcio) || true
-    (yes | pip uninstall grpcio_test) || true
-    (yes | pip uninstall grpcio_health_checking) || true
-    (CFLAGS="-I$ROOT/include -std=c89" LDFLAGS=-L$ROOT/libs/$CONFIG GRPC_PYTHON_BUILD_WITH_CYTHON=1 pip install $GRPCIO) || (
+    clean_grpcio_all
+    install_grpcio || (
       # Fall back to rebuilding the entire environment
       rm -rf $virtualenv_name
       make_virtualenv $1
     )
-    pip install $GRPCIO_TEST
-    pip install $GRPCIO_HEALTH_CHECKING
+    install_grpcio_test
+    install_grpcio_health_checking
   fi
 }
 
diff --git a/tools/run_tests/build_ruby.sh b/tools/run_tests/build_ruby.sh
index 259f336ef225763a40da5d3b57dae65fd2de2ca6..6d23c316c5ad1e8781d4685ff34a82d6005104a3 100755
--- a/tools/run_tests/build_ruby.sh
+++ b/tools/run_tests/build_ruby.sh
@@ -37,6 +37,4 @@ export GRPC_CONFIG=${CONFIG:-opt}
 cd $(dirname $0)/../../src/ruby
 
 rm -rf ./tmp
-
-bundle install
 rake compile:grpc
diff --git a/tools/run_tests/dockerjob.py b/tools/run_tests/dockerjob.py
new file mode 100755
index 0000000000000000000000000000000000000000..11686d46b09ed8267a157d216ae1b671e28bcb47
--- /dev/null
+++ b/tools/run_tests/dockerjob.py
@@ -0,0 +1,115 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Helpers to run docker instances as jobs."""
+
+import jobset
+import tempfile
+import time
+import uuid
+import os
+import subprocess
+
+_DEVNULL = open(os.devnull, 'w')
+
+def wait_for_file(filepath, timeout_seconds=15):
+  """Wait until given file exists and returns its content."""
+  started = time.time()
+  while time.time() - started < timeout_seconds:
+    if os.path.isfile(filepath):
+      with open(filepath, 'r') as f:
+        content = f.read()
+        # make sure we don't return empty content
+        if content:
+          return content
+    time.sleep(1)
+  raise Exception('Failed to read file %s.' % filepath)
+
+
+def docker_mapped_port(cid, port):
+  """Get port mapped to internal given internal port for given container."""
+  output = subprocess.check_output('docker port %s %s' % (cid, port), shell=True)
+  return int(output.split(':', 2)[1])
+
+
+def finish_jobs(jobs):
+  """Kills given docker containers and waits for corresponding jobs to finish"""
+  for job in jobs:
+    job.kill(suppress_failure=True)
+
+  while any(job.is_running() for job in jobs):
+    time.sleep(1)
+
+
+def image_exists(image):
+  """Returns True if given docker image exists."""
+  return subprocess.call(['docker','inspect', image],
+                         stdout=_DEVNULL,
+                         stderr=_DEVNULL) == 0
+
+
+def remove_image(image, skip_nonexistent=False, max_retries=10):
+  """Attempts to remove docker image with retries."""
+  if skip_nonexistent and not image_exists(image):
+    return True
+  for attempt in range(0, max_retries):
+    if subprocess.call(['docker','rmi', '-f', image]) == 0:
+      return True
+    time.sleep(2)
+  print 'Failed to remove docker image %s' % image
+  return False
+
+
+class DockerJob:
+  """Encapsulates a job"""
+
+  def __init__(self, spec):
+    self._spec = spec
+    self._job = jobset.Job(spec, bin_hash=None, newline_on_success=True, travis=True, add_env={}, xml_report=None)
+    self._cidfile = spec.cidfile
+    self._cid = None
+
+  def cid(self):
+    """Gets cid of this container"""
+    if not self._cid:
+      self._cid = wait_for_file(self._cidfile)
+    return self._cid
+
+  def mapped_port(self, port):
+    return docker_mapped_port(self.cid(), port)
+
+  def kill(self, suppress_failure=False):
+    """Sends kill signal to the container."""
+    if suppress_failure:
+      self._job.suppress_failure_message()
+    return subprocess.call(['docker','kill', self.cid()]) == 0
+
+  def is_running(self):
+    """Polls a job and returns True if given job is still running."""
+    return self._job.state(jobset.NoCache()) == jobset._RUNNING
diff --git a/tools/run_tests/jobset.py b/tools/run_tests/jobset.py
index b9ec020f9ef531d896c24b0dda9ea8e3d1925094..87be703b4cdfa6d1a3b859db603801b32a461717 100755
--- a/tools/run_tests/jobset.py
+++ b/tools/run_tests/jobset.py
@@ -180,6 +180,7 @@ class Job(object):
                                    name=self._spec.shortname) if xml_report is not None else None
     self._retries = 0
     self._timeout_retries = 0
+    self._suppress_failure_message = False
     message('START', spec.shortname, do_newline=self._travis)
     self.start()
 
@@ -220,9 +221,10 @@ class Job(object):
           self.start()
         else:
           self._state = _FAILURE
-          message('FAILED', '%s [ret=%d, pid=%d]' % (
-              self._spec.shortname, self._process.returncode, self._process.pid),
-              stdout, do_newline=True)
+          if not self._suppress_failure_message:
+            message('FAILED', '%s [ret=%d, pid=%d]' % (
+                self._spec.shortname, self._process.returncode, self._process.pid),
+                stdout, do_newline=True)
           if self._xml_test is not None:
             ET.SubElement(self._xml_test, 'failure', message='Failure').text
       else:
@@ -254,6 +256,9 @@ class Job(object):
       self._state = _KILLED
       self._process.terminate()
 
+  def suppress_failure_message(self):
+    self._suppress_failure_message = True
+
 
 class Jobset(object):
   """Manages one run of jobs."""
diff --git a/tools/run_tests/port_server.py b/tools/run_tests/port_server.py
index 48b6214b9589260ce0e3c6f7b4029cf2e3e47f5a..b953df952cbcac3af22e64223535fbf87cd47b06 100755
--- a/tools/run_tests/port_server.py
+++ b/tools/run_tests/port_server.py
@@ -38,6 +38,18 @@ import socket
 import sys
 import time
 
+
+# increment this number whenever making a change to ensure that
+# the changes are picked up by running CI servers
+# note that all changes must be backwards compatible
+_MY_VERSION = 2
+
+
+if len(sys.argv) == 2 and sys.argv[1] == 'dump_version':
+  print _MY_VERSION
+  sys.exit(0)
+
+
 argp = argparse.ArgumentParser(description='Server for httpcli_test')
 argp.add_argument('-p', '--port', default=12345, type=int)
 args = argp.parse_args()
@@ -47,9 +59,6 @@ print 'port server running on port %d' % args.port
 pool = []
 in_use = {}
 
-with open(__file__) as f:
-  _MY_VERSION = hashlib.sha1(f.read()).hexdigest()
-
 
 def refill_pool(max_timeout, req):
   """Scan for ports not marked for being in use"""
@@ -113,7 +122,7 @@ class Handler(BaseHTTPServer.BaseHTTPRequestHandler):
       del in_use[p]
       pool.append(p)
       self.log_message('drop port %d' % p)
-    elif self.path == '/version':
+    elif self.path == '/version_number':
       # fetch a version string and the current process pid
       self.send_response(200)
       self.send_header('Content-Type', 'text/plain')
@@ -128,7 +137,7 @@ class Handler(BaseHTTPServer.BaseHTTPRequestHandler):
       self.end_headers()
       now = time.time()
       self.wfile.write(yaml.dump({'pool': pool, 'in_use': dict((k, now - v) for k, v in in_use.iteritems())}))
-    elif self.path == '/quit':
+    elif self.path == '/quitquitquit':
       self.send_response(200)
       self.end_headers()
       keep_running = False
diff --git a/tools/run_tests/pre_build_ruby.sh b/tools/run_tests/pre_build_ruby.sh
new file mode 100755
index 0000000000000000000000000000000000000000..569a1d0333b8876dfca778bd3c1c90dad23d6c5d
--- /dev/null
+++ b/tools/run_tests/pre_build_ruby.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+set -ex
+
+export GRPC_CONFIG=${CONFIG:-opt}
+
+# change to grpc's ruby directory
+cd $(dirname $0)/../../src/ruby
+
+bundle install
diff --git a/tools/run_tests/run_interop_tests.py b/tools/run_tests/run_interop_tests.py
new file mode 100755
index 0000000000000000000000000000000000000000..45efa572f95f900a86c2f3f3bf79aa917166a17e
--- /dev/null
+++ b/tools/run_tests/run_interop_tests.py
@@ -0,0 +1,570 @@
+#!/usr/bin/env python
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Run interop (cross-language) tests in parallel."""
+
+import argparse
+import dockerjob
+import itertools
+import xml.etree.cElementTree as ET
+import jobset
+import multiprocessing
+import os
+import subprocess
+import sys
+import tempfile
+import time
+import uuid
+
+ROOT = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
+os.chdir(ROOT)
+
+_DEFAULT_SERVER_PORT=8080
+
+_CLOUD_TO_PROD_BASE_ARGS = [
+    '--server_host_override=grpc-test.sandbox.google.com',
+    '--server_host=grpc-test.sandbox.google.com',
+    '--server_port=443']
+
+_CLOUD_TO_CLOUD_BASE_ARGS = [
+    '--server_host_override=foo.test.google.fr']
+
+# TOOD(jtattermusch) wrapped languages use this variable for location 
+# of roots.pem. We might want to use GRPC_DEFAULT_SSL_ROOTS_FILE_PATH
+# supported by C core SslCredentials instead.
+_SSL_CERT_ENV = { 'SSL_CERT_FILE':'/usr/local/share/grpc/roots.pem' }
+
+# TODO(jtattermusch) unify usage of --use_tls and --use_tls=true
+# TODO(jtattermusch) unify usage of --use_prod_roots and --use_test_ca
+# TODO(jtattermusch) go uses --tls_ca_file instead of --use_test_ca
+
+
+class CXXLanguage:
+
+  def __init__(self):
+    self.client_cmdline_base = ['bins/opt/interop_client']
+    self.client_cwd = None
+    self.server_cwd = None
+
+  def cloud_to_prod_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
+            ['--use_tls=true','--use_prod_roots'])
+
+  def cloud_to_cloud_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_CLOUD_BASE_ARGS +
+            ['--use_tls=true'])
+
+  def cloud_to_prod_env(self):
+    return {}
+
+  def server_args(self):
+    return ['bins/opt/interop_server', '--use_tls=true']
+
+  def __str__(self):
+    return 'c++'
+
+
+class CSharpLanguage:
+
+  def __init__(self):
+    self.client_cmdline_base = ['mono', 'Grpc.IntegrationTesting.Client.exe']
+    self.client_cwd = 'src/csharp/Grpc.IntegrationTesting.Client/bin/Debug'
+    self.server_cwd = 'src/csharp/Grpc.IntegrationTesting.Server/bin/Debug'
+
+  def cloud_to_prod_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
+            ['--use_tls=true'])
+
+  def cloud_to_cloud_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_CLOUD_BASE_ARGS +
+            ['--use_tls=true', '--use_test_ca=true'])
+
+  def cloud_to_prod_env(self):
+    return _SSL_CERT_ENV
+
+  def server_args(self):
+    return ['mono', 'Grpc.IntegrationTesting.Server.exe', '--use_tls=true']
+
+  def __str__(self):
+    return 'csharp'
+
+
+class JavaLanguage:
+
+  def __init__(self):
+    self.client_cmdline_base = ['./run-test-client.sh']
+    self.client_cwd = '../grpc-java'
+    self.server_cwd = '../grpc-java'
+
+  def cloud_to_prod_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
+            ['--use_tls=true'])
+
+  def cloud_to_cloud_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_CLOUD_BASE_ARGS +
+            ['--use_tls=true', '--use_test_ca=true'])
+
+  def cloud_to_prod_env(self):
+    return {}
+
+  def server_args(self):
+    return ['./run-test-server.sh', '--use_tls=true']
+
+  def __str__(self):
+    return 'java'
+
+
+class GoLanguage:
+
+  def __init__(self):
+    self.client_cmdline_base = ['go', 'run', 'client.go']
+    # TODO: this relies on running inside docker
+    self.client_cwd = '/go/src/google.golang.org/grpc/interop/client'
+    self.server_cwd = '/go/src/google.golang.org/grpc/interop/server'
+
+  def cloud_to_prod_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
+            ['--use_tls=true', '--tls_ca_file=""'])
+
+  def cloud_to_cloud_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_CLOUD_BASE_ARGS +
+            ['--use_tls=true'])
+
+  def cloud_to_prod_env(self):
+    return {}
+
+  def server_args(self):
+    return ['go', 'run', 'server.go', '--use_tls=true']
+
+  def __str__(self):
+    return 'go'
+
+
+class NodeLanguage:
+
+  def __init__(self):
+    self.client_cmdline_base = ['node', 'src/node/interop/interop_client.js']
+    self.client_cwd = None
+    self.server_cwd = None
+
+  def cloud_to_prod_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
+            ['--use_tls=true'])
+
+  def cloud_to_cloud_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_CLOUD_BASE_ARGS +
+            ['--use_tls=true', '--use_test_ca=true'])
+
+  def cloud_to_prod_env(self):
+    return _SSL_CERT_ENV
+
+  def server_args(self):
+    return ['node', 'src/node/interop/interop_server.js', '--use_tls=true']
+
+  def __str__(self):
+    return 'node'
+
+
+class PHPLanguage:
+
+  def __init__(self):
+    self.client_cmdline_base = ['src/php/bin/interop_client.sh']
+    self.client_cwd = None
+
+  def cloud_to_prod_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
+            ['--use_tls'])
+
+  def cloud_to_cloud_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_CLOUD_BASE_ARGS +
+            ['--use_tls', '--use_test_ca'])
+
+  def cloud_to_prod_env(self):
+    return _SSL_CERT_ENV
+
+  def __str__(self):
+    return 'php'
+
+
+class RubyLanguage:
+
+  def __init__(self):
+    self.client_cmdline_base = ['ruby', 'src/ruby/bin/interop/interop_client.rb']
+    self.client_cwd = None
+    self.server_cwd = None
+
+  def cloud_to_prod_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
+            ['--use_tls'])
+
+  def cloud_to_cloud_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_CLOUD_BASE_ARGS +
+            ['--use_tls', '--use_test_ca'])
+
+  def cloud_to_prod_env(self):
+    return _SSL_CERT_ENV
+
+  def server_args(self):
+    return ['ruby', 'src/ruby/bin/interop/interop_server.rb', '--use_tls']
+
+  def __str__(self):
+    return 'ruby'
+
+
+# TODO(jtattermusch): python once we get it working
+_LANGUAGES = {
+    'c++' : CXXLanguage(),
+    'csharp' : CSharpLanguage(),
+    'go' : GoLanguage(),
+    'java' : JavaLanguage(),
+    'node' : NodeLanguage(),
+    'php' :  PHPLanguage(),
+    'ruby' : RubyLanguage(),
+}
+
+# languages supported as cloud_to_cloud servers
+_SERVERS = ['c++', 'node', 'csharp', 'java', 'go', 'ruby']
+
+# TODO(jtattermusch): add empty_stream once PHP starts supporting it.
+# TODO(jtattermusch): add timeout_on_sleeping_server once java starts supporting it.
+# TODO(jtattermusch): add support for auth tests.
+_TEST_CASES = ['large_unary', 'empty_unary', 'ping_pong',
+               'client_streaming', 'server_streaming',
+               'cancel_after_begin', 'cancel_after_first_response']
+
+_AUTH_TEST_CASES = ['compute_engine_creds', 'jwt_token_creds',
+                    'oauth2_auth_token', 'per_rpc_creds']
+
+
+def docker_run_cmdline(cmdline, image, docker_args=[], cwd=None, environ=None):
+  """Wraps given cmdline array to create 'docker run' cmdline from it."""
+  docker_cmdline = ['docker', 'run', '-i', '--rm=true']
+
+  # turn environ into -e docker args
+  if environ:
+    for k,v in environ.iteritems():
+      docker_cmdline += ['-e', '%s=%s' % (k,v)]
+
+  # set working directory
+  workdir = '/var/local/git/grpc'
+  if cwd:
+    workdir = os.path.join(workdir, cwd)
+  docker_cmdline += ['-w', workdir]
+
+  docker_cmdline += docker_args + [image] + cmdline
+  return docker_cmdline
+
+
+def bash_login_cmdline(cmdline):
+  """Creates bash -l -c cmdline from args list."""
+  # Use login shell:
+  # * rvm and nvm require it
+  # * makes error messages clearer if executables are missing
+  return ['bash', '-l', '-c', ' '.join(cmdline)]
+
+
+def add_auth_options(language, test_case, cmdline, env):
+  """Returns (cmdline, env) tuple with cloud_to_prod_auth test options."""
+
+  language = str(language)
+  cmdline = list(cmdline)
+  env = env.copy()
+
+  # TODO(jtattermusch): this file path only works inside docker
+  key_filepath = '/root/service_account/stubbyCloudTestingTest-ee3fce360ac5.json'
+  oauth_scope_arg = '--oauth_scope=https://www.googleapis.com/auth/xapi.zoo'
+  key_file_arg = '--service_account_key_file=%s' % key_filepath
+  default_account_arg = '--default_service_account=830293263384-compute@developer.gserviceaccount.com'
+
+  if test_case in ['jwt_token_creds', 'per_rpc_creds', 'oauth2_auth_token']:
+    if language in ['csharp', 'node', 'php', 'ruby']:
+      env['GOOGLE_APPLICATION_CREDENTIALS'] = key_filepath
+    else:
+      cmdline += [key_file_arg]
+
+  if test_case in ['per_rpc_creds', 'oauth2_auth_token']:
+    cmdline += [oauth_scope_arg]
+
+  if test_case == 'compute_engine_creds':
+    cmdline += [oauth_scope_arg, default_account_arg]
+
+  return (cmdline, env)
+
+
+def cloud_to_prod_jobspec(language, test_case, docker_image=None, auth=False):
+  """Creates jobspec for cloud-to-prod interop test"""
+  cmdline = language.cloud_to_prod_args() + ['--test_case=%s' % test_case]
+  cwd = language.client_cwd
+  environ = language.cloud_to_prod_env()
+  if auth:
+    cmdline, environ = add_auth_options(language, test_case, cmdline, environ)
+  cmdline = bash_login_cmdline(cmdline)
+
+  if docker_image:
+    cmdline = docker_run_cmdline(cmdline, image=docker_image, cwd=cwd, environ=environ)
+    cwd = None
+    environ = None
+
+  suite_name='cloud_to_prod_auth' if auth else 'cloud_to_prod'
+  test_job = jobset.JobSpec(
+          cmdline=cmdline,
+          cwd=cwd,
+          environ=environ,
+          shortname="%s:%s:%s" % (suite_name, language, test_case),
+          timeout_seconds=2*60,
+          flake_retries=5 if args.allow_flakes else 0,
+          timeout_retries=2 if args.allow_flakes else 0)
+  return test_job
+
+
+def cloud_to_cloud_jobspec(language, test_case, server_name, server_host,
+                           server_port, docker_image=None):
+  """Creates jobspec for cloud-to-cloud interop test"""
+  cmdline = bash_login_cmdline(language.cloud_to_cloud_args() +
+                               ['--test_case=%s' % test_case,
+                                '--server_host=%s' % server_host,
+                                '--server_port=%s' % server_port ])
+  cwd = language.client_cwd
+  if docker_image:
+    cmdline = docker_run_cmdline(cmdline,
+                                 image=docker_image,
+                                 cwd=cwd,
+                                 docker_args=['--net=host'])
+    cwd = None
+  test_job = jobset.JobSpec(
+          cmdline=cmdline,
+          cwd=cwd,
+          shortname="cloud_to_cloud:%s:%s_server:%s" % (language, server_name,
+                                                 test_case),
+          timeout_seconds=2*60,
+          flake_retries=5 if args.allow_flakes else 0,
+          timeout_retries=2 if args.allow_flakes else 0)
+  return test_job
+
+
+def server_jobspec(language, docker_image):
+  """Create jobspec for running a server"""
+  cidfile = tempfile.mktemp()
+  cmdline = bash_login_cmdline(language.server_args() +
+                               ['--port=%s' % _DEFAULT_SERVER_PORT])
+  docker_cmdline = docker_run_cmdline(cmdline,
+                                      image=docker_image,
+                                      cwd=language.server_cwd,
+                                      docker_args=['-p', str(_DEFAULT_SERVER_PORT),
+                                                   '--cidfile', cidfile])
+  server_job = jobset.JobSpec(
+          cmdline=docker_cmdline,
+          shortname="interop_server:%s" % language,
+          timeout_seconds=30*60)
+  server_job.cidfile = cidfile
+  return server_job
+
+
+def build_interop_image_jobspec(language, tag=None):
+  """Creates jobspec for building interop docker image for a language"""
+  safelang = str(language).replace("+", "x")
+  if not tag:
+    tag = 'grpc_interop_%s:%s' % (safelang, uuid.uuid4())
+  env = {'INTEROP_IMAGE': tag, 'BASE_NAME': 'grpc_interop_%s' % safelang}
+  if not args.travis:
+    env['TTY_FLAG'] = '-t'
+  build_job = jobset.JobSpec(
+          cmdline=['tools/jenkins/build_interop_image.sh'],
+          environ=env,
+          shortname="build_docker_%s" % (language),
+          timeout_seconds=30*60)
+  build_job.tag = tag
+  return build_job
+
+
+argp = argparse.ArgumentParser(description='Run interop tests.')
+argp.add_argument('-l', '--language',
+                  choices=['all'] + sorted(_LANGUAGES),
+                  nargs='+',
+                  default=['all'],
+                  help='Clients to run.')
+argp.add_argument('-j', '--jobs', default=multiprocessing.cpu_count(), type=int)
+argp.add_argument('--cloud_to_prod',
+                  default=False,
+                  action='store_const',
+                  const=True,
+                  help='Run cloud_to_prod tests.')
+argp.add_argument('--cloud_to_prod_auth',
+                  default=False,
+                  action='store_const',
+                  const=True,
+                  help='Run cloud_to_prod_auth tests.')
+argp.add_argument('-s', '--server',
+                  choices=['all'] + sorted(_SERVERS),
+                  action='append',
+                  help='Run cloud_to_cloud servers in a separate docker ' +
+                       'image. Servers can only be started automatically if ' +
+                       '--use_docker option is enabled.',
+                  default=[])
+argp.add_argument('--override_server',
+                  action='append',
+                  type=lambda kv: kv.split("="),
+                  help='Use servername=HOST:PORT to explicitly specify a server. E.g. csharp=localhost:50000',
+                  default=[])
+argp.add_argument('-t', '--travis',
+                  default=False,
+                  action='store_const',
+                  const=True)
+argp.add_argument('--use_docker',
+                  default=False,
+                  action='store_const',
+                  const=True,
+                  help='Run all the interop tests under docker. That provides ' +
+                  'additional isolation and prevents the need to install ' +
+                  'language specific prerequisites. Only available on Linux.')
+argp.add_argument('--allow_flakes',
+                  default=False,
+                  action='store_const',
+                  const=True,
+                  help="Allow flaky tests to show as passing (re-runs failed tests up to five times)")
+args = argp.parse_args()
+
+servers = set(s for s in itertools.chain.from_iterable(_SERVERS
+                                                       if x == 'all' else [x]
+                                                       for x in args.server))
+
+if args.use_docker:
+  if not args.travis:
+    print 'Seen --use_docker flag, will run interop tests under docker.'
+    print
+    print 'IMPORTANT: The changes you are testing need to be locally committed'
+    print 'because only the committed changes in the current branch will be'
+    print 'copied to the docker environment.'
+    time.sleep(5)
+
+if not args.use_docker and servers:
+  print "Running interop servers is only supported with --use_docker option enabled."
+  sys.exit(1)
+
+languages = set(_LANGUAGES[l]
+                for l in itertools.chain.from_iterable(
+                      _LANGUAGES.iterkeys() if x == 'all' else [x]
+                      for x in args.language))
+
+docker_images={}
+if args.use_docker:
+  # languages for which to build docker images
+  languages_to_build = set(_LANGUAGES[k] for k in set([str(l) for l in languages] +
+                                                    [s for s in servers]))
+
+  build_jobs = []
+  for l in languages_to_build:
+    job = build_interop_image_jobspec(l)
+    docker_images[str(l)] = job.tag
+    build_jobs.append(job)
+
+  if build_jobs:
+    jobset.message('START', 'Building interop docker images.', do_newline=True)
+    if jobset.run(build_jobs, newline_on_success=True, maxjobs=args.jobs):
+      jobset.message('SUCCESS', 'All docker images built successfully.', do_newline=True)
+    else:
+      jobset.message('FAILED', 'Failed to build interop docker images.', do_newline=True)
+      for image in docker_images.itervalues():
+        dockerjob.remove_image(image, skip_nonexistent=True)
+      exit(1);
+
+# Start interop servers.
+server_jobs={}
+server_addresses={}
+try:
+  for s in servers:
+    lang = str(s)
+    spec = server_jobspec(_LANGUAGES[lang], docker_images.get(lang))
+    job = dockerjob.DockerJob(spec)
+    server_jobs[lang] = job
+    server_addresses[lang] = ('localhost', job.mapped_port(_DEFAULT_SERVER_PORT))
+
+
+  jobs = []
+  if args.cloud_to_prod:
+    for language in languages:
+      for test_case in _TEST_CASES:
+        test_job = cloud_to_prod_jobspec(language, test_case,
+                                         docker_image=docker_images.get(str(language)))
+        jobs.append(test_job)
+
+  if args.cloud_to_prod_auth:
+    for language in languages:
+      for test_case in _AUTH_TEST_CASES:
+        test_job = cloud_to_prod_jobspec(language, test_case,
+                                         docker_image=docker_images.get(str(language)),
+                                         auth=True)
+        jobs.append(test_job)
+
+  for server in args.override_server:
+    server_name = server[0]
+    (server_host, server_port) = server[1].split(':')
+    server_addresses[server_name] = (server_host, server_port)
+
+  for server_name, server_address in server_addresses.iteritems():
+    (server_host, server_port) = server_address
+    for language in languages:
+      for test_case in _TEST_CASES:
+        test_job = cloud_to_cloud_jobspec(language,
+                                          test_case,
+                                          server_name,
+                                          server_host,
+                                          server_port,
+                                          docker_image=docker_images.get(str(language)))
+        jobs.append(test_job)
+
+  if not jobs:
+    print "No jobs to run."
+    for image in docker_images.itervalues():
+      dockerjob.remove_image(image, skip_nonexistent=True)
+    sys.exit(1)
+
+  root = ET.Element('testsuites')
+  testsuite = ET.SubElement(root, 'testsuite', id='1', package='grpc', name='tests')
+
+  if jobset.run(jobs, newline_on_success=True, maxjobs=args.jobs, xml_report=testsuite):
+    jobset.message('SUCCESS', 'All tests passed', do_newline=True)
+  else:
+    jobset.message('FAILED', 'Some tests failed', do_newline=True)
+
+  tree = ET.ElementTree(root)
+  tree.write('report.xml', encoding='UTF-8')
+
+finally:
+  # Check if servers are still running.
+  for server, job in server_jobs.iteritems():
+    if not job.is_running():
+      print 'Server "%s" has exited prematurely.' % server
+
+  dockerjob.finish_jobs([j for j in server_jobs.itervalues()])
+
+  for image in docker_images.itervalues():
+    print 'Removing docker image %s' % image
+    dockerjob.remove_image(image)
diff --git a/tools/run_tests/run_interops.py b/tools/run_tests/run_interops.py
deleted file mode 100755
index 17083975d8c14110d858b42b85d38109a0c867f9..0000000000000000000000000000000000000000
--- a/tools/run_tests/run_interops.py
+++ /dev/null
@@ -1,37 +0,0 @@
-import argparse
-import xml.etree.cElementTree as ET
-import jobset
-
-argp = argparse.ArgumentParser(description='Run interop tests.')
-argp.add_argument('-l', '--language',
-                  default='c++')
-args = argp.parse_args()
-
-# build job
-build_job = jobset.JobSpec(cmdline=['tools/run_tests/run_interops_build.sh', '%s' % args.language],
-                           shortname='build',
-                           timeout_seconds=30*60)
-
-# test jobs, each test is a separate job to run in parallel
-_TESTS = ['large_unary', 'empty_unary', 'ping_pong', 'client_streaming', 'server_streaming']
-jobs = []
-jobNumber = 0
-for test in _TESTS:
-  test_job = jobset.JobSpec(
-        cmdline=['tools/run_tests/run_interops_test.sh', '%s' % args.language, '%s' % test], 
-        shortname=test,
-        timeout_seconds=15*60)
-  jobs.append(test_job)
-  jobNumber+=1
-
-root = ET.Element('testsuites')
-testsuite = ET.SubElement(root, 'testsuite', id='1', package='grpc', name='tests')
-
-# always do the build of docker first, and then all the tests can run in parallel
-jobset.run([build_job], maxjobs=1, xml_report=testsuite)
-jobset.run(jobs, maxjobs=jobNumber, xml_report=testsuite)
-
-tree = ET.ElementTree(root)
-tree.write('report.xml', encoding='UTF-8')
-
-
diff --git a/tools/run_tests/run_interops_build.sh b/tools/run_tests/run_interops_build.sh
deleted file mode 100755
index ff1a26cf899afb037758455d514274ee18747e45..0000000000000000000000000000000000000000
--- a/tools/run_tests/run_interops_build.sh
+++ /dev/null
@@ -1,75 +0,0 @@
-#!/bin/sh
-
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-language=$1
-
-set -e
-
-#clean up any old docker files and start mirroring repository if not started already
-sudo docker rmi -f grpc/cxx || true
-sudo docker rmi -f grpc/base || true
-sudo docker rmi -f 0.0.0.0:5000/grpc/base || true
-sudo docker run -d -e GCS_BUCKET=docker-interop-images  -e STORAGE_PATH=/admin/docker_images -p 5000:5000 google/docker-registry || true
-
-#prepare building by pulling down base images and necessary files
-sudo docker pull 0.0.0.0:5000/grpc/base
-sudo docker tag -f 0.0.0.0:5000/grpc/base grpc/base
-
-if [ "$language" = "c++" ]
-then
-  gsutil cp -R gs://docker-interop-images/admin/service_account tools/dockerfile/grpc_cxx
-  gsutil cp -R gs://docker-interop-images/admin/cacerts tools/dockerfile/grpc_cxx
-  sudo docker build --no-cache -t grpc/cxx tools/dockerfile/grpc_cxx
-elif [ "$language" = "node" ]
-then
-  sudo docker pull 0.0.0.0:5000/grpc/node_base
-  sudo docker tag -f 0.0.0.0:5000/grpc/node_base grpc/node_base
-  gsutil cp -R gs://docker-interop-images/admin/service_account tools/dockerfile/grpc_node
-  gsutil cp -R gs://docker-interop-images/admin/cacerts tools/dockerfile/grpc_node
-  sudo docker build --no-cache -t grpc/node tools/dockerfile/grpc_node
-elif [ "$language" = "ruby" ]
-then
-  sudo docker pull 0.0.0.0:5000/grpc/ruby_base
-  sudo docker tag -f 0.0.0.0:5000/grpc/ruby_base grpc/ruby_base
-  gsutil cp -R gs://docker-interop-images/admin/service_account tools/dockerfile/grpc_ruby
-  gsutil cp -R gs://docker-interop-images/admin/cacerts tools/dockerfile/grpc_ruby
-  sudo docker build --no-cache -t grpc/ruby tools/dockerfile/grpc_ruby
-elif [ "$language" = "php" ]
-then
-  sudo docker pull 0.0.0.0:5000/grpc/php_base
-  sudo docker tag -f 0.0.0.0:5000/grpc/php_base grpc/php_base
-  gsutil cp -R gs://docker-interop-images/admin/service_account tools/dockerfile/grpc_php
-  gsutil cp -R gs://docker-interop-images/admin/cacerts tools/dockerfile/grpc_php
-  sudo docker build --no-cache -t grpc/php tools/dockerfile/grpc_php
-else
-  echo "interop testss not added for $language"
-  exit 1
-fi
diff --git a/tools/run_tests/run_node.sh b/tools/run_tests/run_node.sh
index bcd93ed22623b399eb18c561a99465feb5b62323..780969089daec2bb8d3540ee95d9251fce14f72a 100755
--- a/tools/run_tests/run_node.sh
+++ b/tools/run_tests/run_node.sh
@@ -37,6 +37,15 @@ cd $(dirname $0)/../..
 
 root=`pwd`
 
-export LD_LIBRARY_PATH=$root/libs/$CONFIG
-
-$root/src/node/node_modules/mocha/bin/mocha --timeout 8000 $root/src/node/test
+if [ "$CONFIG" = "gcov" ]
+then
+  ./node_modules/.bin/istanbul cover --dir reports/node_coverage \
+    ./node_modules/.bin/_mocha -- --timeout 8000 src/node/test
+  cd build
+  gcov Release/obj.target/grpc/ext/*.o
+  lcov --base-directory . --directory . -c -o coverage.info
+  genhtml -o ../reports/node_ext_coverage --num-spaces 2 \
+    -t 'Node gRPC test coverage' coverage.info
+else
+  ./node_modules/mocha/bin/mocha --timeout 8000 src/node/test
+fi
diff --git a/tools/run_tests/run_python.sh b/tools/run_tests/run_python.sh
index 977b02fd9492e0bf998572c27967549d21dccb77..848775e9b199e7c55361424a6f91c763785c85a3 100755
--- a/tools/run_tests/run_python.sh
+++ b/tools/run_tests/run_python.sh
@@ -40,14 +40,4 @@ export DYLD_LIBRARY_PATH=$ROOT/libs/$CONFIG
 export PATH=$ROOT/bins/$CONFIG:$ROOT/bins/$CONFIG/protobuf:$PATH
 source "python"$PYVER"_virtual_environment"/bin/activate
 
-# TODO(atash): These tests don't currently run under py.test and thus don't
-# appear under the coverage report. Find a way to get these tests to work with
-# py.test (or find another tool or *something*) that's acceptable to the rest of
-# the team...
-"python"$PYVER -m grpc_test._core_over_links_base_interface_test
-"python"$PYVER -m grpc_test._crust_over_core_over_links_face_interface_test
-"python"$PYVER -m grpc_test.beta._face_interface_test
-"python"$PYVER -m grpc_test.framework._crust_over_core_face_interface_test
-"python"$PYVER -m grpc_test.framework.core._base_interface_test
-
-"python"$PYVER $GRPCIO_TEST/setup.py test -a "-n8 --cov=grpc --junitxml=./report.xml --timeout=300"
+"python"$PYVER $GRPCIO_TEST/setup.py test -a "-n8 --cov=grpc --junitxml=./report.xml --timeout=300 -v --boxed --timeout_method=thread"
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index 73b2b3640b30f359c1ecbf04ee5a9fcf6d840e33..d38c0c96ee6991bbd44233d2285477b2aa49e32e 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -181,45 +181,6 @@ class CLanguage(object):
   def __str__(self):
     return self.make_target
 
-
-def gyp_test_paths(travis, config=None):
-  binaries = get_c_tests(travis, 'c')
-  out = []
-  for target in binaries:
-    if config is not None and config.build_config in target['exclude_configs']:
-        continue
-    binary = 'out/Debug/%s' % target['name']
-    out.append(binary)
-  return sorted(out)
-
-
-class GYPCLanguage(object):
-
-  def test_specs(self, config, travis):
-    return [config.job_spec([binary], [binary])
-            for binary in gyp_test_paths(travis, config)]
-
-  def pre_build_steps(self):
-    return [['gyp', '--depth=.', '--suffix=-gyp', 'grpc.gyp']]
-
-  def make_targets(self):
-    # HACK(ctiller): force fling_client and fling_server to be built, as fling_test
-    # needs these
-    return gyp_test_paths(False) + ['fling_client', 'fling_server']
-
-  def build_steps(self):
-    return []
-
-  def makefile_name(self):
-    return 'Makefile-gyp'
-
-  def supports_multi_config(self):
-    return False
-
-  def __str__(self):
-    return 'gyp'
-
-
 class NodeLanguage(object):
 
   def test_specs(self, config, travis):
@@ -230,7 +191,7 @@ class NodeLanguage(object):
     return []
 
   def make_targets(self):
-    return ['static_c', 'shared_c']
+    return []
 
   def build_steps(self):
     return [['tools/run_tests/build_node.sh']]
@@ -323,7 +284,7 @@ class RubyLanguage(object):
                             environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
 
   def pre_build_steps(self):
-    return []
+    return [['tools/run_tests/pre_build_ruby.sh']]
 
   def make_targets(self):
     return ['static_c']
@@ -483,7 +444,6 @@ _DEFAULT = ['opt']
 _LANGUAGES = {
     'c++': CLanguage('cxx', 'c++'),
     'c': CLanguage('c', 'c'),
-    'gyp': GYPCLanguage(),
     'node': NodeLanguage(),
     'php': PhpLanguage(),
     'python': PythonLanguage(),
@@ -557,7 +517,7 @@ argp.add_argument('--use_docker',
                   action='store_const',
                   const=True,
                   help="Run all the tests under docker. That provides " +
-                  "additional isolation and prevents the need to installs " +
+                  "additional isolation and prevents the need to install " +
                   "language specific prerequisites. Only available on Linux.")
 argp.add_argument('--allow_flakes',
                   default=False,
@@ -624,7 +584,9 @@ if platform.system() == 'Windows':
   def make_jobspec(cfg, targets, makefile='Makefile'):
     extra_args = []
     # better do parallel compilation
-    extra_args.extend(["/m"])
+    # empirically /m:2 gives the best performance/price and should prevent
+    # overloading the windows workers.
+    extra_args.extend(["/m:2"])
     # disable PDB generation: it's broken, and we don't need it during CI
     extra_args.extend(["/p:Jenkins=true"])
     return [
@@ -658,7 +620,7 @@ if make_targets:
   make_commands = itertools.chain.from_iterable(make_jobspec(cfg, list(targets), makefile) for cfg in build_configs for (makefile, targets) in make_targets.iteritems())
   build_steps.extend(set(make_commands))
 build_steps.extend(set(
-                   jobset.JobSpec(cmdline, environ={'CONFIG': cfg})
+                   jobset.JobSpec(cmdline, environ={'CONFIG': cfg}, timeout_seconds=10*60)
                    for cfg in build_configs
                    for l in languages
                    for cmdline in l.build_steps()))
@@ -713,22 +675,29 @@ def _start_port_server(port_server_port):
   # if not running ==> start a new one
   # otherwise, leave it up
   try:
-    version = urllib2.urlopen('http://localhost:%d/version' % port_server_port,
-                              timeout=1).read()
+    version = int(urllib2.urlopen(
+        'http://localhost:%d/version_number' % port_server_port,
+        timeout=1).read())
+    print 'detected port server running version %d' % version
     running = True
-  except Exception:
+  except Exception as e:
+    print 'failed to detect port server: %s' % sys.exc_info()[0]
+    print e.strerror
     running = False
   if running:
-    with open('tools/run_tests/port_server.py') as f:
-      current_version = hashlib.sha1(f.read()).hexdigest()
-      running = (version == current_version)
-      if not running:
-        urllib2.urlopen('http://localhost:%d/quit' % port_server_port).read()
-        time.sleep(1)
+    current_version = int(subprocess.check_output(
+        [sys.executable, 'tools/run_tests/port_server.py', 'dump_version']))
+    print 'my port server is version %d' % current_version
+    running = (version >= current_version)
+    if not running:
+      print 'port_server version mismatch: killing the old one'
+      urllib2.urlopen('http://localhost:%d/quitquitquit' % port_server_port).read()
+      time.sleep(1)
   if not running:
+    print 'starting port_server'
     port_log = open('portlog.txt', 'w')
     port_server = subprocess.Popen(
-        ['python', 'tools/run_tests/port_server.py', '-p', '%d' % port_server_port],
+        [sys.executable, 'tools/run_tests/port_server.py', '-p', '%d' % port_server_port],
         stderr=subprocess.STDOUT,
         stdout=port_log)
     # ensure port server is up
@@ -737,7 +706,7 @@ def _start_port_server(port_server_port):
       if waits > 10:
         port_server.kill()
       if port_server.poll() is not None:
-        print "port_server failed to start"
+        print 'port_server failed to start'
         port_log = open('portlog.txt', 'r').read()
         print port_log
         sys.exit(1)
@@ -746,11 +715,11 @@ def _start_port_server(port_server_port):
                         timeout=1).read()
         break
       except socket.timeout:
-        print "waiting for port_server"
+        print 'waiting for port_server: timeout'
         time.sleep(0.5)
         waits += 1
       except urllib2.URLError:
-        print "waiting for port_server"
+        print 'waiting for port_server: urlerror'
         time.sleep(0.5)
         waits += 1
       except:
@@ -769,7 +738,7 @@ def _build_and_run(
   # start antagonists
   antagonists = [subprocess.Popen(['tools/run_tests/antagonist.py'])
                  for _ in range(0, args.antagonists)]
-  port_server_port = 9999
+  port_server_port = 32767
   _start_port_server(port_server_port)
   try:
     infinite_runs = runs_per_test == 0
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 1e5dd11fcd003388e8fdce17f9c593a63509da82..1ceff15a3be19ad9625bd90a0650f9b07652b58b 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -12362,6 +12362,7 @@
       "src/core/security/security_context.h", 
       "src/core/statistics/census_interface.h", 
       "src/core/statistics/census_rpc_stats.h", 
+      "src/core/surface/api_trace.h", 
       "src/core/surface/byte_buffer_queue.h", 
       "src/core/surface/call.h", 
       "src/core/surface/channel.h", 
@@ -12596,6 +12597,8 @@
       "src/core/security/server_secure_chttp2.c", 
       "src/core/statistics/census_interface.h", 
       "src/core/statistics/census_rpc_stats.h", 
+      "src/core/surface/api_trace.c", 
+      "src/core/surface/api_trace.h", 
       "src/core/surface/byte_buffer.c", 
       "src/core/surface/byte_buffer_queue.c", 
       "src/core/surface/byte_buffer_queue.h", 
@@ -12622,7 +12625,6 @@
       "src/core/surface/server.h", 
       "src/core/surface/server_chttp2.c", 
       "src/core/surface/server_create.c", 
-      "src/core/surface/surface_trace.c", 
       "src/core/surface/surface_trace.h", 
       "src/core/surface/version.c", 
       "src/core/transport/chttp2/alpn.c", 
@@ -12856,6 +12858,7 @@
       "src/core/profiling/timers.h", 
       "src/core/statistics/census_interface.h", 
       "src/core/statistics/census_rpc_stats.h", 
+      "src/core/surface/api_trace.h", 
       "src/core/surface/byte_buffer_queue.h", 
       "src/core/surface/call.h", 
       "src/core/surface/channel.h", 
@@ -13060,6 +13063,8 @@
       "src/core/profiling/timers.h", 
       "src/core/statistics/census_interface.h", 
       "src/core/statistics/census_rpc_stats.h", 
+      "src/core/surface/api_trace.c", 
+      "src/core/surface/api_trace.h", 
       "src/core/surface/byte_buffer.c", 
       "src/core/surface/byte_buffer_queue.c", 
       "src/core/surface/byte_buffer_queue.h", 
@@ -13085,7 +13090,6 @@
       "src/core/surface/server.h", 
       "src/core/surface/server_chttp2.c", 
       "src/core/surface/server_create.c", 
-      "src/core/surface/surface_trace.c", 
       "src/core/surface/surface_trace.h", 
       "src/core/surface/version.c", 
       "src/core/transport/chttp2/alpn.c", 
diff --git a/vsprojects/coapp/zlib/README.md b/vsprojects/coapp/zlib/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..c81a57a48be176845fd1a4de5eae90c016dd6a9a
--- /dev/null
+++ b/vsprojects/coapp/zlib/README.md
@@ -0,0 +1,35 @@
+Zlib Native Nuget package
+-------------------------
+
+Uses [CoApp](http://coapp.org/) project to build the zlib package.
+
+Prerequisites
+-------------
+Multiple versions of VS installed to be able to build all the targets:
+* Visual Studio 2013
+* Visual Studio 2010 (you might need SP1 to prevent LNK1123 error)
+
+CoApp toolkit: http://downloads.coapp.org/files/CoApp.Tools.Powershell.msi
+
+More details on installation: http://coapp.org/tutorials/installation.html
+
+Building
+--------
+
+Build all flavors of zlib library using the provided batch file.
+```
+buildall.bat
+```
+
+Then, create NuGet package using powershell (you'll need the CoApp toolkit installed):
+```
+[THIS_DIRECTORY]> Write-NuGetPackage grpc.dependencies.zlib.autopkg
+```
+
+This will create three NuGet packages:
+* the main dev package
+* the redistributable package that contains just the binaries and no headers
+* the symbols package (debug symbols)
+
+Later, you can push the package to NuGet.org repo.
+Attention: before pusing the resulting nuget package to public nuget repo, you have to be 100% sure it works correctly - there’s no way how to delete or update an already existing package.
\ No newline at end of file
diff --git a/vsprojects/coapp/zlib/buildall.bat b/vsprojects/coapp/zlib/buildall.bat
new file mode 100644
index 0000000000000000000000000000000000000000..a71e56f4ae09af728ee3304876444f6ee396c1ab
--- /dev/null
+++ b/vsprojects/coapp/zlib/buildall.bat
@@ -0,0 +1,51 @@
+@echo off
+setlocal
+
+setlocal
+call "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" amd64
+call :build x64 Release v120 || goto :eof
+call :build x64 Debug v120 || goto :eof
+endlocal
+
+setlocal
+call "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" x86
+call :build Win32 Release v120 || goto :eof
+call :build Win32 Debug v120 || goto :eof
+endlocal
+
+REM setlocal
+REM call "C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\vcvarsall.bat" amd64
+REM call :build x64 Release v110 || goto :eof
+REM call :build x64 Debug v110 || goto :eof
+REM endlocal
+
+REM setlocal
+REM call "C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\vcvarsall.bat" x86
+REM call :build Win32 Release v110 || goto :eof
+REM call :build Win32 Debug v110 || goto :eof
+REM endlocal
+
+REM setlocal
+REM call "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" amd64
+REM call :build x64 Release v100 || goto :eof
+REM call :build x64 Debug v100 || goto :eof
+REM endlocal
+
+setlocal
+call "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" x86
+call :build Win32 Release v100 || goto :eof
+call :build Win32 Debug v100 || goto :eof
+endlocal
+
+goto :eof
+
+:build
+msbuild /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=Dynamic /P:CallingConvention=cdecl .\zlib.sln || goto :eof
+msbuild /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=Dynamic /P:CallingConvention=stdcall .\zlib.sln || goto :eof
+msbuild /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=Static /P:CallingConvention=cdecl .\zlib.sln || goto :eof
+msbuild /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=Static /P:CallingConvention=stdcall .\zlib.sln || goto :eof
+msbuild /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=ltcg /P:CallingConvention=cdecl .\zlib.sln || goto :eof
+msbuild /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=ltcg /P:CallingConvention=stdcall .\zlib.sln || goto :eof
+goto :eof
+
+
diff --git a/vsprojects/coapp/zlib/grpc.dependencies.zlib.autopkg b/vsprojects/coapp/zlib/grpc.dependencies.zlib.autopkg
new file mode 100644
index 0000000000000000000000000000000000000000..01390b9434634e3d760f9a17fa7f75714182988d
--- /dev/null
+++ b/vsprojects/coapp/zlib/grpc.dependencies.zlib.autopkg
@@ -0,0 +1,102 @@
+@import @"version.inc";
+
+configurations {
+};
+
+#define { 
+      package-id = "grpc.dependencies.zlib";
+}
+
+nuget {
+	// the nuspec file metadata. Gets created/updated on build
+	nuspec {
+		id = ${package-id};
+		version : ${package-version};
+		title: gRPC Native Dependency: ZLib compression library;
+		authors: {Jean-loup Gailly, Mark Adler, Garrett Serack, Tim Rogers};
+		owners: {Jan Tattermusch};
+		licenseUrl: "http://zlib.net/zlib-license.html";
+		projectUrl: "http://github.com/jtattermusch/zlib";
+		iconUrl: "http://zlib.net/images/zlib3d-b1.png";
+		requireLicenseAcceptance:false;
+		summary:A zlib library;
+		description: @"A native zlib library.
+	zlib homepage:  http://zlib.net";
+		releaseNotes: "Release of zlib 1.2.8 libraries.";
+		copyright: Copyright 2013;
+		tags: { zlib, native, CoApp };
+
+	};
+
+	// the files that go into the content folders
+	// (inserted into the nuspec file)
+	files {
+	    // .targets file that are applied when redist package is installed from a managed project.
+		managed_build: {
+		  #output {
+              package = redist;
+          };
+		  #destination = "\build\portable-net45";
+		  "managed_targets\${package-id}.redist.props";
+		  "managed_targets\${package-id}.redist.targets";
+		};
+	
+		include: { ..\..\..\third_party\zlib\zlib.h, ..\..\..\third_party\zlib\zconf.h };
+
+		docs: {  ..\..\..\third_party\zlib\doc\**\* };
+        
+        source += {
+            "..\..\..\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",
+            "..\..\..\third_party\zlib\crc32.h",
+            "..\..\..\third_party\zlib\deflate.h",
+            "..\..\..\third_party\zlib\gzguts.h",
+            "..\..\..\third_party\zlib\inffast.h",
+            "..\..\..\third_party\zlib\inffixed.h",
+            "..\..\..\third_party\zlib\inflate.h",
+            "..\..\..\third_party\zlib\inftrees.h",
+            "..\..\..\third_party\zlib\trees.h",
+            "..\..\..\third_party\zlib\zconf.h",
+            "..\..\..\third_party\zlib\zlib.h",
+            "..\..\..\third_party\zlib\zutil.h",
+            "..\..\..\third_party\zlib\contrib\masmx64\inffas8664.c",
+        };
+		("v100,v120", "Win32,x64", "Release,Debug", "Dynamic", "cdecl,stdcall", "MultiByte") => {
+			[${0},${1},${2},${3},${4}] {
+				lib:     { .\output\${0}\${1}\${2}\${3}\${4}\${5}\*.lib };
+				bin:     { .\output\${0}\${1}\${2}\${3}\${4}\${5}\*.dll };
+				symbols: { .\output\${0}\${1}\${2}\${3}\${4}\${5}\*.pdb };
+			};
+		};
+		("v100,v120", "Win32,x64", "Release,Debug", "Static,ltcg", "cdecl,stdcall", "MultiByte") => {
+			[${0},${1},${2},${3},${4}] {
+				lib:     { .\output\${0}\${1}\${2}\${3}\${4}\${5}\*.lib };
+			};
+		};
+
+	};
+
+	// the VC++ .targets file that gets generated and inserted into the ${d_content} folder
+	targets {
+		Defines += HAS_ZLIB;
+		[dynamic]
+			Defines += ZLIB_DLL;
+		[stdcall]
+			Defines += ZLIB_WINAPI;
+			
+	};
+}
+
diff --git a/vsprojects/coapp/zlib/managed_targets/grpc.dependencies.zlib.redist.props b/vsprojects/coapp/zlib/managed_targets/grpc.dependencies.zlib.redist.props
new file mode 100644
index 0000000000000000000000000000000000000000..bcb37de0f7f7355167cbd93f0bc5bc828e45c3b4
--- /dev/null
+++ b/vsprojects/coapp/zlib/managed_targets/grpc.dependencies.zlib.redist.props
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <!-- Whether or not copy native dependencies to output directory after building -->
+    <CopyNativeDependencies Condition=" '$(CopyNativeDependencies)' == '' ">true</CopyNativeDependencies>
+    
+	<!-- Set defaults for native dependencies if not already set. Properties can be overriden in the project files. -->
+	<NativeDependenciesToolset Condition=" '$(NativeDependenciesToolset)' == '' ">v120</NativeDependenciesToolset>
+    <NativeDependenciesPlatform Condition=" '$(NativeDependenciesPlatform)' == '' ">Win32</NativeDependenciesPlatform>
+    <NativeDependenciesConfiguration Condition=" '$(NativeDependenciesConfiguration)' == '' ">Debug</NativeDependenciesConfiguration>
+	<ZlibCallingConvention Condition=" '$(ZlibCallingConvention)' == '' ">cdecl</ZlibCallingConvention>
+  </PropertyGroup>
+</Project>
\ No newline at end of file
diff --git a/vsprojects/coapp/zlib/managed_targets/grpc.dependencies.zlib.redist.targets b/vsprojects/coapp/zlib/managed_targets/grpc.dependencies.zlib.redist.targets
new file mode 100644
index 0000000000000000000000000000000000000000..f00d97dc3619d355668879ecdd1504ba391a0ce2
--- /dev/null
+++ b/vsprojects/coapp/zlib/managed_targets/grpc.dependencies.zlib.redist.targets
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Choose>
+    <!-- Under older versions of Monodevelop, Choose is not supported and is just ignored, which gives us the desired effect. -->
+    <When Condition=" '$(OS)' != 'Unix' ">
+      <ItemGroup Condition=" '$(CopyNativeDependencies)' == 'true' ">
+        <Content Include="$(MSBuildThisFileDirectory)..\..\build\native\bin\$(NativeDependenciesToolset)\$(NativeDependenciesPlatform)\$(NativeDependenciesConfiguration)\dynamic\$(ZlibCallingConvention)\zlib.dll">
+          <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+        </Content>
+      </ItemGroup>
+	</When>
+  <Otherwise />
+  </Choose>
+</Project>
\ No newline at end of file
diff --git a/vsprojects/coapp/zlib/version.inc b/vsprojects/coapp/zlib/version.inc
new file mode 100644
index 0000000000000000000000000000000000000000..1f893a4951415f0d46581a24f4c509611415c445
--- /dev/null
+++ b/vsprojects/coapp/zlib/version.inc
@@ -0,0 +1 @@
+#define { package-version : 1.2.8.9; } 
diff --git a/vsprojects/coapp/zlib/zlib.sln b/vsprojects/coapp/zlib/zlib.sln
new file mode 100644
index 0000000000000000000000000000000000000000..7c38e6e1215b19d30df4a1ebd5201d3d89a70c3e
--- /dev/null
+++ b/vsprojects/coapp/zlib/zlib.sln
@@ -0,0 +1,26 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib.vcxproj", "{63BED288-E8C3-4345-B84D-2E64598DCF3A}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+		Debug|x64 = Debug|x64
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Debug|Win32.ActiveCfg = Debug|Win32
+		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Debug|Win32.Build.0 = Debug|Win32
+		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Release|Win32.ActiveCfg = Release|Win32
+		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Release|Win32.Build.0 = Release|Win32
+		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Debug|x64.ActiveCfg = Debug|x64
+		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Debug|x64.Build.0 = Debug|x64
+		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Release|x64.ActiveCfg = Release|x64
+		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Release|x64.Build.0 = Release|x64
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
diff --git a/vsprojects/coapp/zlib/zlib.vcxproj b/vsprojects/coapp/zlib/zlib.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..56df39a248381362a2e6577c3b53d3cc24dedc45
--- /dev/null
+++ b/vsprojects/coapp/zlib/zlib.vcxproj
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+    <CoAppEtcDirectory>$(registry:HKEY_LOCAL_MACHINE\Software\Outercurve\CoApp.Powershell\etc)</CoAppEtcDirectory>
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+  <PropertyGroup Label="Configuration" >
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+
+    <!-- Common Compiler Defines (semicolon delimited) -->
+    <Defines>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;</Defines>
+    <Defines Condition="$(IS_STDCALL)">$(Defines);ZLIB_WINAPI;</Defines>
+    <Defines Condition="$(IS_DYNAMIC)">$(Defines);ZLIB_DLL;</Defines>
+    <Defines Condition="'$(AppContainer)' == 'App'">$(Defines);IOWIN32_USING_WINRT_API=1;</Defines>
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+    <Defines Condition="'$(UseASM)' == 'ASM'">$(Defines);ASMV;ASMINF;</Defines>
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+    <!-- Additional Library folders (semicolon delimited) -->
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+
+    <!-- Libraries to Link with -->
+    <Libraries></Libraries>
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+    <!-- Batch script to run before Build-->
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+    <!-- Batch script to run after Build-->
+    <PostBuild></PostBuild>
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+    <!-- Batch script to run after Link-->
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+    <PostLib></PostLib>
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+
+    <!-- Targets to run before Build (semcolon delimited)-->
+    <PostBuildTargets></PostBuildTargets>
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+    <!-- for Dynamic libs, you can specify the Module .DEF file path -->
+    <ModuleDefinitionFile></ModuleDefinitionFile>
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+  <Import Condition="'$(UseASM)' == 'ASM'" Project="$(VCTargetsPath)\BuildCustomizations\masm.props" />
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+  <PropertyGroup>
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+  <ItemDefinitionGroup>
+    <ClCompile>
+	  <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
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+  </ItemDefinitionGroup>
+  
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+      <AssembledCodeListingFile>$(IntDir)inffas32.lst</AssembledCodeListingFile>
+      <MASMBeforeTargets>Build</MASMBeforeTargets>
+	  <UseSafeExceptionHandlers>true</UseSafeExceptionHandlers>
+      <AdditionalOptions>/coff %(AdditionalOptions)</AdditionalOptions>
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+    </MASM>
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+      <AssembledCodeListingFile>$(IntDir)match686.lst</AssembledCodeListingFile>
+      <MASMBeforeTargets>Build</MASMBeforeTargets>
+	  <UseSafeExceptionHandlers>true</UseSafeExceptionHandlers>
+      <AdditionalOptions>/coff %(AdditionalOptions)</AdditionalOptions>
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+  </ItemGroup>
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+  <ItemGroup Label="C Source Files">
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+    <ClCompile Include="..\..\..\third_party\zlib\compress.c" />
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+    <ClCompile Include="..\..\..\third_party\zlib\deflate.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\gzclose.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\gzlib.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\gzread.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\gzwrite.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\infback.c" />
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+    <ClCompile Include="..\..\..\third_party\zlib\inffast.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\inflate.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\inftrees.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\trees.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\uncompr.c" />
+    <ClCompile Include="..\..\..\third_party\zlib\zutil.c" />
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+
+  <ItemGroup Label="Resource Files">
+    <!-- Include the source files to compile here -->
+    <!-- <ResourceCompile Include="..\src\foo.rc" /> -->
+    <ResourceCompile Include="..\..\..\third_party\zlib\win32\zlib1.rc" />
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+
+  <Import Condition="'$(UseASM)' == 'ASM'" Project="$(VCTargetsPath)\BuildCustomizations\masm.targets" />
+  <Import Condition="Exists('$(CoAppEtcDirectory)\common-footer.vcxproj')" Project="$(CoAppEtcDirectory)\common-footer.vcxproj" />
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new file mode 100644
index 0000000000000000000000000000000000000000..c6750948677c9c88a6f881c548650a05ae01d71f
--- /dev/null
+++ b/vsprojects/grpc/grpc.vcxproj
@@ -0,0 +1,658 @@
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+    <ProjectConfiguration Include="Release|x64">
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+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
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+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
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+    <UseDebugLibraries>true</UseDebugLibraries>
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+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>grpc</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Debug</Configuration-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_openssl>Debug</Configuration-grpc_dependencies_openssl>
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+  <PropertyGroup Condition="'$(Configuration)'=='Release'">
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new file mode 100644
index 0000000000000000000000000000000000000000..5bde4656165cf7a92955dd6d15da5be2f868489b
--- /dev/null
+++ b/vsprojects/grpc/grpc.vcxproj.filters
@@ -0,0 +1,874 @@
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diff --git a/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..60143f1ab12fe5b9d936f4792ce5287bbb2b974a
--- /dev/null
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new file mode 100644
index 0000000000000000000000000000000000000000..edfa397e37ef9f6bab6b09acc35ead06b1408b2d
--- /dev/null
+++ b/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -0,0 +1,766 @@
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+    <ClInclude Include="..\..\src\core\transport\chttp2\frame_rst_stream.h">
+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\chttp2\frame_settings.h">
+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\chttp2\frame_window_update.h">
+      <Filter>src\core\transport\chttp2</Filter>
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+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
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+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
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+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
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+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\chttp2\incoming_metadata.h">
+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\chttp2\internal.h">
+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\chttp2\status_conversion.h">
+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\chttp2\stream_encoder.h">
+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\chttp2\stream_map.h">
+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\chttp2\timeout_encoding.h">
+      <Filter>src\core\transport\chttp2</Filter>
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+    <ClInclude Include="..\..\src\core\transport\chttp2\varint.h">
+      <Filter>src\core\transport\chttp2</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\chttp2_transport.h">
+      <Filter>src\core\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\connectivity_state.h">
+      <Filter>src\core\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\metadata.h">
+      <Filter>src\core\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\stream_op.h">
+      <Filter>src\core\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\transport.h">
+      <Filter>src\core\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\transport\transport_impl.h">
+      <Filter>src\core\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\census\context.h">
+      <Filter>src\core\census</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\core\census\rpc_stat_id.h">
+      <Filter>src\core\census</Filter>
+    </ClInclude>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Filter Include="include">
+      <UniqueIdentifier>{10076c7e-7c8e-8005-0c81-64454af2cbc8}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="include\grpc">
+      <UniqueIdentifier>{77b9717b-b8d8-dd5f-14bb-a3e96809a70a}</UniqueIdentifier>
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+      <UniqueIdentifier>{443ffc61-1bea-2477-6e54-1ddf8c139264}</UniqueIdentifier>
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+      <UniqueIdentifier>{7f91d9bf-c9de-835a-d74d-b16f843b89a9}</UniqueIdentifier>
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+      <UniqueIdentifier>{e084164c-a069-00e3-db35-4e0b1cd6f0b7}</UniqueIdentifier>
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+      <UniqueIdentifier>{6cd0127e-c24b-d43c-38f5-198db8d4322a}</UniqueIdentifier>
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+      <UniqueIdentifier>{6687ff98-e36e-c0b1-2756-1bc79edec406}</UniqueIdentifier>
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+    <Filter Include="src\core\transport\chttp2">
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+  </ItemGroup>
+</Project>
+
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj
index e7770af3c2451f132ef59670a7d4a69b48f731ac..183edbc05bf7cd124537104857d68049da4de391 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@@ -341,6 +341,7 @@
     <ClInclude Include="..\..\..\src\core\profiling\timers.h" />
     <ClInclude Include="..\..\..\src\core\statistics\census_interface.h" />
     <ClInclude Include="..\..\..\src\core\statistics\census_rpc_stats.h" />
+    <ClInclude Include="..\..\..\src\core\surface\api_trace.h" />
     <ClInclude Include="..\..\..\src\core\surface\byte_buffer_queue.h" />
     <ClInclude Include="..\..\..\src\core\surface\call.h" />
     <ClInclude Include="..\..\..\src\core\surface\channel.h" />
@@ -578,6 +579,8 @@
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\profiling\stap_timers.c">
     </ClCompile>
+    <ClCompile Include="..\..\..\src\core\surface\api_trace.c">
+    </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\byte_buffer.c">
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\byte_buffer_queue.c">
@@ -612,8 +615,6 @@
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\server_create.c">
     </ClCompile>
-    <ClCompile Include="..\..\..\src\core\surface\surface_trace.c">
-    </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\version.c">
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\transport\chttp2\alpn.c">
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
index a8f82370d91d7003ce3e8f687635173c78c3c7c3..66ce9ca05be6387db553db3a0be7571d201cf373 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@@ -298,6 +298,9 @@
     <ClCompile Include="..\..\..\src\core\profiling\stap_timers.c">
       <Filter>src\core\profiling</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\core\surface\api_trace.c">
+      <Filter>src\core\surface</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\byte_buffer.c">
       <Filter>src\core\surface</Filter>
     </ClCompile>
@@ -349,9 +352,6 @@
     <ClCompile Include="..\..\..\src\core\surface\server_create.c">
       <Filter>src\core\surface</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\..\src\core\surface\surface_trace.c">
-      <Filter>src\core\surface</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\version.c">
       <Filter>src\core\surface</Filter>
     </ClCompile>
@@ -734,6 +734,9 @@
     <ClInclude Include="..\..\..\src\core\statistics\census_rpc_stats.h">
       <Filter>src\core\statistics</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\src\core\surface\api_trace.h">
+      <Filter>src\core\surface</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\..\src\core\surface\byte_buffer_queue.h">
       <Filter>src\core\surface</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
index 82ec8a754809a9f9c020ee279611093525705acc..b527179f9f314935c5bac6aade3c72617646481c 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
@@ -320,6 +320,7 @@
     <ClInclude Include="..\..\..\src\core\profiling\timers.h" />
     <ClInclude Include="..\..\..\src\core\statistics\census_interface.h" />
     <ClInclude Include="..\..\..\src\core\statistics\census_rpc_stats.h" />
+    <ClInclude Include="..\..\..\src\core\surface\api_trace.h" />
     <ClInclude Include="..\..\..\src\core\surface\byte_buffer_queue.h" />
     <ClInclude Include="..\..\..\src\core\surface\call.h" />
     <ClInclude Include="..\..\..\src\core\surface\channel.h" />
@@ -517,6 +518,8 @@
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\profiling\stap_timers.c">
     </ClCompile>
+    <ClCompile Include="..\..\..\src\core\surface\api_trace.c">
+    </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\byte_buffer.c">
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\byte_buffer_queue.c">
@@ -551,8 +554,6 @@
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\server_create.c">
     </ClCompile>
-    <ClCompile Include="..\..\..\src\core\surface\surface_trace.c">
-    </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\version.c">
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\transport\chttp2\alpn.c">
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index 21355d67f26f179e1d1568a470139d897ac24d13..7be3c9ec93b65d5cfd028d9f04de7f987e01d998 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -238,6 +238,9 @@
     <ClCompile Include="..\..\..\src\core\profiling\stap_timers.c">
       <Filter>src\core\profiling</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\core\surface\api_trace.c">
+      <Filter>src\core\surface</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\byte_buffer.c">
       <Filter>src\core\surface</Filter>
     </ClCompile>
@@ -289,9 +292,6 @@
     <ClCompile Include="..\..\..\src\core\surface\server_create.c">
       <Filter>src\core\surface</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\..\src\core\surface\surface_trace.c">
-      <Filter>src\core\surface</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\..\src\core\surface\version.c">
       <Filter>src\core\surface</Filter>
     </ClCompile>
@@ -632,6 +632,9 @@
     <ClInclude Include="..\..\..\src\core\statistics\census_rpc_stats.h">
       <Filter>src\core\statistics</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\src\core\surface\api_trace.h">
+      <Filter>src\core\surface</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\..\src\core\surface\byte_buffer_queue.h">
       <Filter>src\core\surface</Filter>
     </ClInclude>