diff --git a/PYTHON-MANIFEST.in b/PYTHON-MANIFEST.in
index 635e77b..175a47f 100644
--- a/PYTHON-MANIFEST.in
+++ b/PYTHON-MANIFEST.in
@@ -7,6 +7,7 @@
 graft third_party/boringssl
 graft third_party/nanopb
 graft third_party/zlib
+include src/python/grpcio/build.py
 include src/python/grpcio/commands.py
 include src/python/grpcio/grpc_version.py
 include src/python/grpcio/grpc_core_dependencies.py
diff --git a/examples/php/composer.json b/examples/php/composer.json
index c837bf7..950e113 100644
--- a/examples/php/composer.json
+++ b/examples/php/composer.json
@@ -9,6 +9,6 @@
     }
   ],
   "require": {
-    "grpc/grpc": "dev-release-0_13"
+    "grpc/grpc": "v0.15.0"
   }
 }
diff --git a/examples/python/helloworld/run_codegen.sh b/examples/python/helloworld/run_codegen.sh
index 42b58e5..34224e5 100755
--- a/examples/python/helloworld/run_codegen.sh
+++ b/examples/python/helloworld/run_codegen.sh
@@ -29,4 +29,4 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # Runs the protoc with gRPC plugin to generate protocol messages and gRPC stubs.
-protoc -I ../../protos --python_out=. --grpc_out=. --plugin=protoc-gen-grpc=`which grpc_python_plugin` ../../protos/helloworld.proto
+python -m grpc.tools.protoc -I../../protos --python_out=. --grpc_python_out=. ../../protos/helloworld.proto
diff --git a/examples/python/route_guide/run_codegen.sh b/examples/python/route_guide/run_codegen.sh
index d9d56c2..a377a1a 100755
--- a/examples/python/route_guide/run_codegen.sh
+++ b/examples/python/route_guide/run_codegen.sh
@@ -29,4 +29,4 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # Runs the protoc with gRPC plugin to generate protocol messages and gRPC stubs.
-protoc -I ../../protos --python_out=. --grpc_out=. --plugin=protoc-gen-grpc=`which grpc_python_plugin` ../../protos/route_guide.proto
+python -m grpc.tools.protoc -I../../protos --python_out=. --grpc_python_out=. ../../protos/route_guide.proto
diff --git a/package.json b/package.json
index 68a31d7..1fec9cb 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,6 @@
   "files": [
     "LICENSE",
     "src/node/README.md",
-    "src/node/health_check",
     "src/proto",
     "etc",
     "src/node/index.js",
diff --git a/setup.py b/setup.py
index d9c46ba..700515b 100644
--- a/setup.py
+++ b/setup.py
@@ -31,6 +31,7 @@
 
 import os
 import os.path
+import platform
 import shlex
 import shutil
 import sys
@@ -56,10 +57,15 @@
 sys.path.insert(0, os.path.abspath(PYTHON_STEM))
 
 # Break import-style to ensure we can actually find our in-repo dependencies.
+import _unixccompiler_patch
 import commands
 import grpc_core_dependencies
 import grpc_version
 
+# TODO(atash) make this conditional on being on a mingw32 build
+_unixccompiler_patch.monkeypatch_unix_compiler()
+
+
 LICENSE = '3-clause BSD'
 
 # Environment variable to determine whether or not the Cython extension should
@@ -72,6 +78,14 @@
 ENABLE_CYTHON_TRACING = os.environ.get(
     'GRPC_PYTHON_ENABLE_CYTHON_TRACING', False)
 
+# There are some situations (like on Windows) where CC, CFLAGS, and LDFLAGS are
+# entirely ignored/dropped/forgotten by distutils and its Cygwin/MinGW support.
+# We use these environment variables to thus get around that without locking
+# ourselves in w.r.t. the multitude of operating systems this ought to build on.
+# By default we assume a GCC-like compiler.
+EXTRA_COMPILE_ARGS = shlex.split(os.environ.get('GRPC_PYTHON_CFLAGS', ''))
+EXTRA_LINK_ARGS = shlex.split(os.environ.get('GRPC_PYTHON_LDFLAGS', ''))
+
 CYTHON_EXTENSION_PACKAGE_NAMES = ()
 
 CYTHON_EXTENSION_MODULE_NAMES = ('grpc._cython.cygrpc',)
@@ -81,9 +95,7 @@
     os.path.join(PYTHON_STEM, 'grpc/_cython/imports.generated.c'),
 )
 
-CORE_C_FILES = ()
-if not "win32" in sys.platform:
-  CORE_C_FILES += tuple(grpc_core_dependencies.CORE_SOURCE_FILES)
+CORE_C_FILES = tuple(grpc_core_dependencies.CORE_SOURCE_FILES)
 
 EXTENSION_INCLUDE_DIRECTORIES = (
     (PYTHON_STEM,) + CORE_INCLUDE + BORINGSSL_INCLUDE + ZLIB_INCLUDE)
@@ -93,12 +105,17 @@
   EXTENSION_LIBRARIES += ('rt',)
 if not "win32" in sys.platform:
   EXTENSION_LIBRARIES += ('m',)
+if "win32" in sys.platform:
+  EXTENSION_LIBRARIES += ('ws2_32',)
 
 DEFINE_MACROS = (('OPENSSL_NO_ASM', 1), ('_WIN32_WINNT', 0x600), ('GPR_BACKWARDS_COMPATIBILITY_MODE', 1),)
+if "win32" in sys.platform:
+  DEFINE_MACROS += (('OPENSSL_WINDOWS', 1), ('WIN32_LEAN_AND_MEAN', 1),)
+  if '64bit' in platform.architecture()[0]:
+    DEFINE_MACROS += (('MS_WIN64', 1),)
 
-LDFLAGS = shlex.split(os.environ.get('GRPC_PYTHON_LDFLAGS', ''))
-CFLAGS = shlex.split(os.environ.get('GRPC_PYTHON_CFLAGS', ''))
-
+LDFLAGS = tuple(EXTRA_LINK_ARGS)
+CFLAGS = tuple(EXTRA_COMPILE_ARGS)
 if "linux" in sys.platform:
   LDFLAGS += ('-Wl,-wrap,memcpy',)
 if "linux" in sys.platform or "darwin" in sys.platform:
diff --git a/src/core/lib/security/transport/client_auth_filter.c b/src/core/lib/security/transport/client_auth_filter.c
index 14ccf72..ed7929a 100644
--- a/src/core/lib/security/transport/client_auth_filter.c
+++ b/src/core/lib/security/transport/client_auth_filter.c
@@ -176,7 +176,7 @@
     calld->creds = grpc_composite_call_credentials_create(channel_call_creds,
                                                           ctx->creds, NULL);
     if (calld->creds == NULL) {
-      bubble_up_error(exec_ctx, elem, GRPC_STATUS_INTERNAL,
+      bubble_up_error(exec_ctx, elem, GRPC_STATUS_UNAUTHENTICATED,
                       "Incompatible credentials set on channel and call.");
       return;
     }
@@ -205,7 +205,7 @@
     char *error_msg;
     gpr_asprintf(&error_msg, "Invalid host %s set in :authority metadata.",
                  grpc_mdstr_as_c_string(calld->host));
-    bubble_up_error(exec_ctx, elem, GRPC_STATUS_INTERNAL, error_msg);
+    bubble_up_error(exec_ctx, elem, GRPC_STATUS_UNAUTHENTICATED, error_msg);
     gpr_free(error_msg);
   }
 }
diff --git a/src/core/lib/surface/channel.c b/src/core/lib/surface/channel.c
index 2cf6d88..6d2b1c4 100644
--- a/src/core/lib/surface/channel.c
+++ b/src/core/lib/surface/channel.c
@@ -81,7 +81,7 @@
   CHANNEL_FROM_CHANNEL_STACK(grpc_channel_stack_from_top_element(top_elem))
 
 /* the protobuf library will (by default) start warning at 100megs */
-#define DEFAULT_MAX_MESSAGE_LENGTH (100 * 1024 * 1024)
+#define DEFAULT_MAX_MESSAGE_LENGTH (4 * 1024 * 1024)
 
 static void destroy_channel(grpc_exec_ctx *exec_ctx, void *arg,
                             grpc_error *error);
diff --git a/src/node/health_check/LICENSE b/src/node/health_check/LICENSE
new file mode 100644
index 0000000..0209b57
--- /dev/null
+++ b/src/node/health_check/LICENSE
@@ -0,0 +1,28 @@
+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/health_check/health.js b/src/node/health_check/health.js
index 5236683..64ba9fb 100644
--- a/src/node/health_check/health.js
+++ b/src/node/health_check/health.js
@@ -33,14 +33,12 @@
 
 'use strict';
 
-var grpc = require('../');
+var grpc = require('grpc');
 
 var _ = require('lodash');
 
-var health_proto = grpc.load(__dirname +
-    '/../../proto/grpc/health/v1/health.proto');
-
-var HealthClient = health_proto.grpc.health.v1.Health;
+var health_messages = require('./v1/health_pb');
+var health_service = require('./v1/health_grpc_pb');
 
 function HealthImplementation(statusMap) {
   this.statusMap = _.clone(statusMap);
@@ -51,17 +49,19 @@
 };
 
 HealthImplementation.prototype.check = function(call, callback){
-  var service = call.request.service;
+  var service = call.request.getService();
   var status = _.get(this.statusMap, service, null);
   if (status === null) {
     callback({code:grpc.status.NOT_FOUND});
   } else {
-    callback(null, {status: status});
+    var response = new health_messages.HealthCheckResponse();
+    response.setStatus(status);
+    callback(null, response);
   }
 };
 
 module.exports = {
-  Client: HealthClient,
-  service: HealthClient.service,
+  Client: health_service.HealthClient,
+  service: health_service.HealthService,
   Implementation: HealthImplementation
 };
diff --git a/src/node/health_check/node_modules/grpc.js b/src/node/health_check/node_modules/grpc.js
new file mode 100644
index 0000000..4216119
--- /dev/null
+++ b/src/node/health_check/node_modules/grpc.js
@@ -0,0 +1,37 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/* This exists solely to allow the generated code to import the grpc module
+ * without using a relative path */
+
+module.exports = require('../..');
diff --git a/src/node/health_check/package.json b/src/node/health_check/package.json
new file mode 100644
index 0000000..ad65b31
--- /dev/null
+++ b/src/node/health_check/package.json
@@ -0,0 +1,29 @@
+{
+  "name": "grpc-health-check",
+  "version": "0.16.0-dev",
+  "author": "Google Inc.",
+  "description": "Health check service for use with gRPC",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/grpc/grpc.git"
+  },
+  "bugs": "https://github.com/grpc/grpc/issues",
+  "contributors": [
+    {
+      "name": "Michael Lumish",
+      "email": "mlumish@google.com"
+    }
+  ],
+  "dependencies": {
+    "grpc": "^0.15.0",
+    "lodash": "^3.9.3",
+    "google-protobuf": "^3.0.0-alpha.5"
+  },
+  "files": {
+    "LICENSE",
+    "health.js",
+    "v1"
+  },
+  "main": "src/node/index.js",
+  "license": "BSD-3-Clause"
+}
diff --git a/src/node/health_check/v1/health_grpc_pb.js b/src/node/health_check/v1/health_grpc_pb.js
new file mode 100644
index 0000000..89bc304
--- /dev/null
+++ b/src/node/health_check/v1/health_grpc_pb.js
@@ -0,0 +1,74 @@
+// GENERATED CODE -- DO NOT EDIT!
+
+// Original file comments:
+// 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 grpc = require('grpc');
+var v1_health_pb = require('../v1/health_pb.js');
+
+function serialize_HealthCheckRequest(arg) {
+  if (!(arg instanceof v1_health_pb.HealthCheckRequest)) {
+    throw new Error('Expected argument of type HealthCheckRequest');
+  }
+  return new Buffer(arg.serializeBinary());
+}
+
+function deserialize_HealthCheckRequest(buffer_arg) {
+  return v1_health_pb.HealthCheckRequest.deserializeBinary(new Uint8Array(buffer_arg));
+}
+
+function serialize_HealthCheckResponse(arg) {
+  if (!(arg instanceof v1_health_pb.HealthCheckResponse)) {
+    throw new Error('Expected argument of type HealthCheckResponse');
+  }
+  return new Buffer(arg.serializeBinary());
+}
+
+function deserialize_HealthCheckResponse(buffer_arg) {
+  return v1_health_pb.HealthCheckResponse.deserializeBinary(new Uint8Array(buffer_arg));
+}
+
+
+var HealthService = exports.HealthService = {
+  check: {
+    path: '/grpc.health.v1.Health/Check',
+    requestStream: false,
+    responseStream: false,
+    requestType: v1_health_pb.HealthCheckRequest,
+    responseType: v1_health_pb.HealthCheckResponse,
+    requestSerialize: serialize_HealthCheckRequest,
+    requestDeserialize: deserialize_HealthCheckRequest,
+    responseSerialize: serialize_HealthCheckResponse,
+    responseDeserialize: deserialize_HealthCheckResponse,
+  },
+};
+
+exports.HealthClient = grpc.makeGenericClientConstructor(HealthService);
diff --git a/src/node/health_check/v1/health_pb.js b/src/node/health_check/v1/health_pb.js
new file mode 100644
index 0000000..b36d47c
--- /dev/null
+++ b/src/node/health_check/v1/health_pb.js
@@ -0,0 +1,342 @@
+/**
+ * @fileoverview
+ * @enhanceable
+ * @public
+ */
+// GENERATED CODE -- DO NOT EDIT!
+
+var jspb = require('google-protobuf');
+var goog = jspb;
+var global = Function('return this')();
+
+goog.exportSymbol('proto.grpc.health.v1.HealthCheckRequest', null, global);
+goog.exportSymbol('proto.grpc.health.v1.HealthCheckResponse', null, global);
+goog.exportSymbol('proto.grpc.health.v1.HealthCheckResponse.ServingStatus', null, global);
+
+/**
+ * Generated by JsPbCodeGenerator.
+ * @param {Array=} opt_data Optional initial data array, typically from a
+ * server response, or constructed directly in Javascript. The array is used
+ * in place and becomes part of the constructed object. It is not cloned.
+ * If no data is provided, the constructed object will be empty, but still
+ * valid.
+ * @extends {jspb.Message}
+ * @constructor
+ */
+proto.grpc.health.v1.HealthCheckRequest = function(opt_data) {
+  jspb.Message.initialize(this, opt_data, 0, -1, null, null);
+};
+goog.inherits(proto.grpc.health.v1.HealthCheckRequest, jspb.Message);
+if (goog.DEBUG && !COMPILED) {
+  proto.grpc.health.v1.HealthCheckRequest.displayName = 'proto.grpc.health.v1.HealthCheckRequest';
+}
+
+
+if (jspb.Message.GENERATE_TO_OBJECT) {
+/**
+ * Creates an object representation of this proto suitable for use in Soy templates.
+ * Field names that are reserved in JavaScript and will be renamed to pb_name.
+ * To access a reserved field use, foo.pb_<name>, eg, foo.pb_default.
+ * For the list of reserved names please see:
+ *     com.google.apps.jspb.JsClassTemplate.JS_RESERVED_WORDS.
+ * @param {boolean=} opt_includeInstance Whether to include the JSPB instance
+ *     for transitional soy proto support: http://goto/soy-param-migration
+ * @return {!Object}
+ */
+proto.grpc.health.v1.HealthCheckRequest.prototype.toObject = function(opt_includeInstance) {
+  return proto.grpc.health.v1.HealthCheckRequest.toObject(opt_includeInstance, this);
+};
+
+
+/**
+ * Static version of the {@see toObject} method.
+ * @param {boolean|undefined} includeInstance Whether to include the JSPB
+ *     instance for transitional soy proto support:
+ *     http://goto/soy-param-migration
+ * @param {!proto.grpc.health.v1.HealthCheckRequest} msg The msg instance to transform.
+ * @return {!Object}
+ */
+proto.grpc.health.v1.HealthCheckRequest.toObject = function(includeInstance, msg) {
+  var f, obj = {
+    service: msg.getService()
+  };
+
+  if (includeInstance) {
+    obj.$jspbMessageInstance = msg;
+  }
+  return obj;
+};
+}
+
+
+/**
+ * Deserializes binary data (in protobuf wire format).
+ * @param {jspb.ByteSource} bytes The bytes to deserialize.
+ * @return {!proto.grpc.health.v1.HealthCheckRequest}
+ */
+proto.grpc.health.v1.HealthCheckRequest.deserializeBinary = function(bytes) {
+  var reader = new jspb.BinaryReader(bytes);
+  var msg = new proto.grpc.health.v1.HealthCheckRequest;
+  return proto.grpc.health.v1.HealthCheckRequest.deserializeBinaryFromReader(msg, reader);
+};
+
+
+/**
+ * Deserializes binary data (in protobuf wire format) from the
+ * given reader into the given message object.
+ * @param {!proto.grpc.health.v1.HealthCheckRequest} msg The message object to deserialize into.
+ * @param {!jspb.BinaryReader} reader The BinaryReader to use.
+ * @return {!proto.grpc.health.v1.HealthCheckRequest}
+ */
+proto.grpc.health.v1.HealthCheckRequest.deserializeBinaryFromReader = function(msg, reader) {
+  while (reader.nextField()) {
+    if (reader.isEndGroup()) {
+      break;
+    }
+    var field = reader.getFieldNumber();
+    switch (field) {
+    case 1:
+      var value = /** @type {string} */ (reader.readString());
+      msg.setService(value);
+      break;
+    default:
+      reader.skipField();
+      break;
+    }
+  }
+  return msg;
+};
+
+
+/**
+ * Class method variant: serializes the given message to binary data
+ * (in protobuf wire format), writing to the given BinaryWriter.
+ * @param {!proto.grpc.health.v1.HealthCheckRequest} message
+ * @param {!jspb.BinaryWriter} writer
+ */
+proto.grpc.health.v1.HealthCheckRequest.serializeBinaryToWriter = function(message, writer) {
+  message.serializeBinaryToWriter(writer);
+};
+
+
+/**
+ * Serializes the message to binary data (in protobuf wire format).
+ * @return {!Uint8Array}
+ */
+proto.grpc.health.v1.HealthCheckRequest.prototype.serializeBinary = function() {
+  var writer = new jspb.BinaryWriter();
+  this.serializeBinaryToWriter(writer);
+  return writer.getResultBuffer();
+};
+
+
+/**
+ * Serializes the message to binary data (in protobuf wire format),
+ * writing to the given BinaryWriter.
+ * @param {!jspb.BinaryWriter} writer
+ */
+proto.grpc.health.v1.HealthCheckRequest.prototype.serializeBinaryToWriter = function (writer) {
+  var f = undefined;
+  f = this.getService();
+  if (f.length > 0) {
+    writer.writeString(
+      1,
+      f
+    );
+  }
+};
+
+
+/**
+ * Creates a deep clone of this proto. No data is shared with the original.
+ * @return {!proto.grpc.health.v1.HealthCheckRequest} The clone.
+ */
+proto.grpc.health.v1.HealthCheckRequest.prototype.cloneMessage = function() {
+  return /** @type {!proto.grpc.health.v1.HealthCheckRequest} */ (jspb.Message.cloneMessage(this));
+};
+
+
+/**
+ * optional string service = 1;
+ * @return {string}
+ */
+proto.grpc.health.v1.HealthCheckRequest.prototype.getService = function() {
+  return /** @type {string} */ (jspb.Message.getFieldProto3(this, 1, ""));
+};
+
+
+/** @param {string} value  */
+proto.grpc.health.v1.HealthCheckRequest.prototype.setService = function(value) {
+  jspb.Message.setField(this, 1, value);
+};
+
+
+
+/**
+ * Generated by JsPbCodeGenerator.
+ * @param {Array=} opt_data Optional initial data array, typically from a
+ * server response, or constructed directly in Javascript. The array is used
+ * in place and becomes part of the constructed object. It is not cloned.
+ * If no data is provided, the constructed object will be empty, but still
+ * valid.
+ * @extends {jspb.Message}
+ * @constructor
+ */
+proto.grpc.health.v1.HealthCheckResponse = function(opt_data) {
+  jspb.Message.initialize(this, opt_data, 0, -1, null, null);
+};
+goog.inherits(proto.grpc.health.v1.HealthCheckResponse, jspb.Message);
+if (goog.DEBUG && !COMPILED) {
+  proto.grpc.health.v1.HealthCheckResponse.displayName = 'proto.grpc.health.v1.HealthCheckResponse';
+}
+
+
+if (jspb.Message.GENERATE_TO_OBJECT) {
+/**
+ * Creates an object representation of this proto suitable for use in Soy templates.
+ * Field names that are reserved in JavaScript and will be renamed to pb_name.
+ * To access a reserved field use, foo.pb_<name>, eg, foo.pb_default.
+ * For the list of reserved names please see:
+ *     com.google.apps.jspb.JsClassTemplate.JS_RESERVED_WORDS.
+ * @param {boolean=} opt_includeInstance Whether to include the JSPB instance
+ *     for transitional soy proto support: http://goto/soy-param-migration
+ * @return {!Object}
+ */
+proto.grpc.health.v1.HealthCheckResponse.prototype.toObject = function(opt_includeInstance) {
+  return proto.grpc.health.v1.HealthCheckResponse.toObject(opt_includeInstance, this);
+};
+
+
+/**
+ * Static version of the {@see toObject} method.
+ * @param {boolean|undefined} includeInstance Whether to include the JSPB
+ *     instance for transitional soy proto support:
+ *     http://goto/soy-param-migration
+ * @param {!proto.grpc.health.v1.HealthCheckResponse} msg The msg instance to transform.
+ * @return {!Object}
+ */
+proto.grpc.health.v1.HealthCheckResponse.toObject = function(includeInstance, msg) {
+  var f, obj = {
+    status: msg.getStatus()
+  };
+
+  if (includeInstance) {
+    obj.$jspbMessageInstance = msg;
+  }
+  return obj;
+};
+}
+
+
+/**
+ * Deserializes binary data (in protobuf wire format).
+ * @param {jspb.ByteSource} bytes The bytes to deserialize.
+ * @return {!proto.grpc.health.v1.HealthCheckResponse}
+ */
+proto.grpc.health.v1.HealthCheckResponse.deserializeBinary = function(bytes) {
+  var reader = new jspb.BinaryReader(bytes);
+  var msg = new proto.grpc.health.v1.HealthCheckResponse;
+  return proto.grpc.health.v1.HealthCheckResponse.deserializeBinaryFromReader(msg, reader);
+};
+
+
+/**
+ * Deserializes binary data (in protobuf wire format) from the
+ * given reader into the given message object.
+ * @param {!proto.grpc.health.v1.HealthCheckResponse} msg The message object to deserialize into.
+ * @param {!jspb.BinaryReader} reader The BinaryReader to use.
+ * @return {!proto.grpc.health.v1.HealthCheckResponse}
+ */
+proto.grpc.health.v1.HealthCheckResponse.deserializeBinaryFromReader = function(msg, reader) {
+  while (reader.nextField()) {
+    if (reader.isEndGroup()) {
+      break;
+    }
+    var field = reader.getFieldNumber();
+    switch (field) {
+    case 1:
+      var value = /** @type {!proto.grpc.health.v1.HealthCheckResponse.ServingStatus} */ (reader.readEnum());
+      msg.setStatus(value);
+      break;
+    default:
+      reader.skipField();
+      break;
+    }
+  }
+  return msg;
+};
+
+
+/**
+ * Class method variant: serializes the given message to binary data
+ * (in protobuf wire format), writing to the given BinaryWriter.
+ * @param {!proto.grpc.health.v1.HealthCheckResponse} message
+ * @param {!jspb.BinaryWriter} writer
+ */
+proto.grpc.health.v1.HealthCheckResponse.serializeBinaryToWriter = function(message, writer) {
+  message.serializeBinaryToWriter(writer);
+};
+
+
+/**
+ * Serializes the message to binary data (in protobuf wire format).
+ * @return {!Uint8Array}
+ */
+proto.grpc.health.v1.HealthCheckResponse.prototype.serializeBinary = function() {
+  var writer = new jspb.BinaryWriter();
+  this.serializeBinaryToWriter(writer);
+  return writer.getResultBuffer();
+};
+
+
+/**
+ * Serializes the message to binary data (in protobuf wire format),
+ * writing to the given BinaryWriter.
+ * @param {!jspb.BinaryWriter} writer
+ */
+proto.grpc.health.v1.HealthCheckResponse.prototype.serializeBinaryToWriter = function (writer) {
+  var f = undefined;
+  f = this.getStatus();
+  if (f !== 0.0) {
+    writer.writeEnum(
+      1,
+      f
+    );
+  }
+};
+
+
+/**
+ * Creates a deep clone of this proto. No data is shared with the original.
+ * @return {!proto.grpc.health.v1.HealthCheckResponse} The clone.
+ */
+proto.grpc.health.v1.HealthCheckResponse.prototype.cloneMessage = function() {
+  return /** @type {!proto.grpc.health.v1.HealthCheckResponse} */ (jspb.Message.cloneMessage(this));
+};
+
+
+/**
+ * optional ServingStatus status = 1;
+ * @return {!proto.grpc.health.v1.HealthCheckResponse.ServingStatus}
+ */
+proto.grpc.health.v1.HealthCheckResponse.prototype.getStatus = function() {
+  return /** @type {!proto.grpc.health.v1.HealthCheckResponse.ServingStatus} */ (jspb.Message.getFieldProto3(this, 1, 0));
+};
+
+
+/** @param {!proto.grpc.health.v1.HealthCheckResponse.ServingStatus} value  */
+proto.grpc.health.v1.HealthCheckResponse.prototype.setStatus = function(value) {
+  jspb.Message.setField(this, 1, value);
+};
+
+
+/**
+ * @enum {number}
+ */
+proto.grpc.health.v1.HealthCheckResponse.ServingStatus = {
+  UNKNOWN: 0,
+  SERVING: 1,
+  NOT_SERVING: 2
+};
+
+goog.object.extend(exports, proto.grpc.health.v1);
diff --git a/src/node/test/health_test.js b/src/node/test/health_test.js
index c93b528..efbca46 100644
--- a/src/node/test/health_test.js
+++ b/src/node/test/health_test.js
@@ -35,15 +35,19 @@
 
 var assert = require('assert');
 
-var health = require('../health_check/health.js');
+var health = require('../health_check/health');
+
+var health_messages = require('../health_check/v1/health_pb');
+
+var ServingStatus = health_messages.HealthCheckResponse.ServingStatus;
 
 var grpc = require('../');
 
 describe('Health Checking', function() {
   var statusMap = {
-    '': 'SERVING',
-    'grpc.test.TestServiceNotServing': 'NOT_SERVING',
-    'grpc.test.TestServiceServing': 'SERVING'
+    '': ServingStatus.SERVING,
+    'grpc.test.TestServiceNotServing': ServingStatus.NOT_SERVING,
+    'grpc.test.TestServiceServing': ServingStatus.SERVING
   };
   var healthServer;
   var healthImpl;
@@ -51,7 +55,7 @@
   before(function() {
     healthServer = new grpc.Server();
     healthImpl = new health.Implementation(statusMap);
-    healthServer.addProtoService(health.service, healthImpl);
+    healthServer.addService(health.service, healthImpl);
     var port_num = healthServer.bind('0.0.0.0:0',
                                      grpc.ServerCredentials.createInsecure());
     healthServer.start();
@@ -62,43 +66,51 @@
     healthServer.forceShutdown();
   });
   it('should say an enabled service is SERVING', function(done) {
-    healthClient.check({service: ''}, function(err, response) {
+    var request = new health_messages.HealthCheckRequest();
+    request.setService('');
+    healthClient.check(request, function(err, response) {
       assert.ifError(err);
-      assert.strictEqual(response.status, 'SERVING');
+      assert.strictEqual(response.getStatus(), ServingStatus.SERVING);
       done();
     });
   });
   it('should say that a disabled service is NOT_SERVING', function(done) {
-    healthClient.check({service: 'grpc.test.TestServiceNotServing'},
-                       function(err, response) {
-                         assert.ifError(err);
-                         assert.strictEqual(response.status, 'NOT_SERVING');
-                         done();
-                       });
+    var request = new health_messages.HealthCheckRequest();
+    request.setService('grpc.test.TestServiceNotServing');
+    healthClient.check(request, function(err, response) {
+      assert.ifError(err);
+      assert.strictEqual(response.getStatus(), ServingStatus.NOT_SERVING);
+      done();
+    });
   });
   it('should say that an enabled service is SERVING', function(done) {
-    healthClient.check({service: 'grpc.test.TestServiceServing'},
-                       function(err, response) {
-                         assert.ifError(err);
-                         assert.strictEqual(response.status, 'SERVING');
-                         done();
-                       });
+    var request = new health_messages.HealthCheckRequest();
+    request.setService('grpc.test.TestServiceServing');
+    healthClient.check(request, function(err, response) {
+      assert.ifError(err);
+      assert.strictEqual(response.getStatus(), ServingStatus.SERVING);
+      done();
+    });
   });
   it('should get NOT_FOUND if the service is not registered', function(done) {
-    healthClient.check({service: 'not_registered'}, function(err, response) {
+    var request = new health_messages.HealthCheckRequest();
+    request.setService('not_registered');
+    healthClient.check(request, function(err, response) {
       assert(err);
       assert.strictEqual(err.code, grpc.status.NOT_FOUND);
       done();
     });
   });
   it('should get a different response if the status changes', function(done) {
-    healthClient.check({service: 'transient'}, function(err, response) {
+    var request = new health_messages.HealthCheckRequest();
+    request.setService('transient');
+    healthClient.check(request, function(err, response) {
       assert(err);
       assert.strictEqual(err.code, grpc.status.NOT_FOUND);
-      healthImpl.setStatus('transient', 'SERVING');
-      healthClient.check({service: 'transient'}, function(err, response) {
+      healthImpl.setStatus('transient', ServingStatus.SERVING);
+      healthClient.check(request, function(err, response) {
         assert.ifError(err);
-        assert.strictEqual(response.status, 'SERVING');
+        assert.strictEqual(response.getStatus(), ServingStatus.SERVING);
         done();
       });
     });
diff --git a/src/php/composer.json b/src/php/composer.json
index 01674a2..2ad7322 100644
--- a/src/php/composer.json
+++ b/src/php/composer.json
@@ -2,7 +2,6 @@
   "name": "grpc/grpc",
   "type": "library",
   "description": "gRPC library for PHP",
-  "version": "0.14.0",
   "keywords": ["rpc"],
   "homepage": "http://grpc.io",
   "license": "BSD-3-Clause",
diff --git a/src/php/ext/grpc/byte_buffer.c b/src/php/ext/grpc/byte_buffer.c
index 2bf9e00..3be1429 100644
--- a/src/php/ext/grpc/byte_buffer.c
+++ b/src/php/ext/grpc/byte_buffer.c
@@ -65,15 +65,13 @@
     *out_length = 0;
     return;
   }
-  size_t length = grpc_byte_buffer_length(buffer);
+
+  gpr_slice slice = grpc_byte_buffer_reader_readall(&reader);
+  size_t length = GPR_SLICE_LENGTH(slice);
   char *string = ecalloc(length + 1, sizeof(char));
-  size_t offset = 0;
-  gpr_slice next;
-  while (grpc_byte_buffer_reader_next(&reader, &next) != 0) {
-    memcpy(string + offset, GPR_SLICE_START_PTR(next), GPR_SLICE_LENGTH(next));
-    offset += GPR_SLICE_LENGTH(next);
-    gpr_slice_unref(next);
-  }
+  memcpy(string, GPR_SLICE_START_PTR(slice), length);
+  gpr_slice_unref(slice);
+
   *out_string = string;
   *out_length = length;
 }
diff --git a/src/php/ext/grpc/php_grpc.c b/src/php/ext/grpc/php_grpc.c
index f4cb5b2..449ba3c 100644
--- a/src/php/ext/grpc/php_grpc.c
+++ b/src/php/ext/grpc/php_grpc.c
@@ -248,6 +248,8 @@
   /* uncomment this line if you have INI entries
   UNREGISTER_INI_ENTRIES();
   */
+  // WARNING: This function IS being called by PHP when the extension
+  // is unloaded but the logs were somehow suppressed.
   grpc_shutdown_timeval(TSRMLS_C);
   grpc_php_shutdown_completion_queue(TSRMLS_C);
   grpc_shutdown();
diff --git a/src/python/grpcio/_unixccompiler_patch.py b/src/python/grpcio/_unixccompiler_patch.py
new file mode 100644
index 0000000..9a69798
--- /dev/null
+++ b/src/python/grpcio/_unixccompiler_patch.py
@@ -0,0 +1,121 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Covers inadequacies in distutils."""
+
+from distutils import ccompiler
+from distutils import errors
+from distutils import unixccompiler
+import os
+import os.path
+import shutil
+import sys
+import tempfile
+
+
+def _unix_piecemeal_link(
+    self, target_desc, objects, output_filename, output_dir=None,
+    libraries=None, library_dirs=None, runtime_library_dirs=None,
+    export_symbols=None, debug=0, extra_preargs=None, extra_postargs=None,
+    build_temp=None, target_lang=None):
+  """`link` externalized method taken almost verbatim from UnixCCompiler.
+
+  Modifies the link command for unix-like compilers by using a command file so
+  that long command line argument strings don't break the command shell's
+  ARG_MAX character limit.
+  """
+  objects, output_dir = self._fix_object_args(objects, output_dir)
+  libraries, library_dirs, runtime_library_dirs = self._fix_lib_args(
+      libraries, library_dirs, runtime_library_dirs)
+  # filter out standard library paths, which are not explicitely needed
+  # for linking
+  library_dirs = [dir for dir in library_dirs
+                  if not dir in ('/lib', '/lib64', '/usr/lib', '/usr/lib64')]
+  runtime_library_dirs = [dir for dir in runtime_library_dirs
+                          if not dir in ('/lib', '/lib64', '/usr/lib', '/usr/lib64')]
+  lib_opts = ccompiler.gen_lib_options(self, library_dirs, runtime_library_dirs,
+                             libraries)
+  if (not (isinstance(output_dir, str) or isinstance(output_dir, bytes))
+      and output_dir is not None):
+    raise TypeError("'output_dir' must be a string or None")
+  if output_dir is not None:
+    output_filename = os.path.join(output_dir, output_filename)
+
+  if self._need_link(objects, output_filename):
+    ld_args = (objects + self.objects +
+               lib_opts + ['-o', output_filename])
+    if debug:
+      ld_args[:0] = ['-g']
+    if extra_preargs:
+      ld_args[:0] = extra_preargs
+    if extra_postargs:
+      ld_args.extend(extra_postargs)
+    self.mkpath(os.path.dirname(output_filename))
+    try:
+      if target_desc == ccompiler.CCompiler.EXECUTABLE:
+        linker = self.linker_exe[:]
+      else:
+        linker = self.linker_so[:]
+      if target_lang == "c++" and self.compiler_cxx:
+        # skip over environment variable settings if /usr/bin/env
+        # is used to set up the linker's environment.
+        # This is needed on OSX. Note: this assumes that the
+        # normal and C++ compiler have the same environment
+        # settings.
+        i = 0
+        if os.path.basename(linker[0]) == "env":
+          i = 1
+          while '=' in linker[i]:
+            i = i + 1
+
+        linker[i] = self.compiler_cxx[i]
+
+      if sys.platform == 'darwin':
+        import _osx_support
+        linker = _osx_support.compiler_fixup(linker, ld_args)
+
+      temporary_directory = tempfile.mkdtemp()
+      command_filename = os.path.abspath(
+          os.path.join(temporary_directory, 'command'))
+      with open(command_filename, 'w') as command_file:
+        escaped_ld_args = [arg.replace('\\', '\\\\') for arg in ld_args]
+        command_file.write(' '.join(escaped_ld_args))
+      self.spawn(linker + ['@{}'.format(command_filename)])
+    except errors.DistutilsExecError:
+      raise ccompiler.LinkError
+  else:
+    log.debug("skipping %s (up-to-date)", output_filename)
+
+# TODO(atash) try replacing this monkeypatch of the compiler harness' link
+# operation with a monkeypatch of the distutils `spawn` that applies
+# command-argument-file hacks where it can. Might be cleaner.
+def monkeypatch_unix_compiler():
+  """Monkeypatching is dumb, but it's either that or we become maintainers of
+     something much, much bigger."""
+  unixccompiler.UnixCCompiler.link = _unix_piecemeal_link
diff --git a/src/python/grpcio/grpc/__init__.py b/src/python/grpcio/grpc/__init__.py
index b3eeaad..afd7db1 100644
--- a/src/python/grpcio/grpc/__init__.py
+++ b/src/python/grpcio/grpc/__init__.py
@@ -1091,37 +1091,41 @@
       _auth.AccessTokenCallCredentials(access_token))
 
 
-def composite_call_credentials(call_credentials, additional_call_credentials):
-  """Compose two CallCredentials to make a new one.
+def composite_call_credentials(*call_credentials):
+  """Compose multiple CallCredentials to make a new CallCredentials.
 
   Args:
-    call_credentials: A CallCredentials object.
-    additional_call_credentials: Another CallCredentials object to compose on
-      top of call_credentials.
+    *call_credentials: At least two CallCredentials objects.
 
   Returns:
-    A new CallCredentials composed of the two given CallCredentials.
+    A CallCredentials object composed of the given CallCredentials objects.
   """
+  from grpc import _credential_composition
+  cygrpc_call_credentials = tuple(
+      single_call_credentials._credentials
+      for single_call_credentials in call_credentials)
   return CallCredentials(
-      _cygrpc.call_credentials_composite(
-          call_credentials._credentials,
-          additional_call_credentials._credentials))
+      _credential_composition.call(cygrpc_call_credentials))
 
 
-def composite_channel_credentials(channel_credentials, call_credentials):
-  """Compose a ChannelCredentials and a CallCredentials.
+def composite_channel_credentials(channel_credentials, *call_credentials):
+  """Compose a ChannelCredentials and one or more CallCredentials objects.
 
   Args:
     channel_credentials: A ChannelCredentials.
-    call_credentials: A CallCredentials.
+    *call_credentials: One or more CallCredentials objects.
 
   Returns:
     A ChannelCredentials composed of the given ChannelCredentials and
-      CallCredentials.
+      CallCredentials objects.
   """
+  from grpc import _credential_composition
+  cygrpc_call_credentials = tuple(
+      single_call_credentials._credentials
+      for single_call_credentials in call_credentials)
   return ChannelCredentials(
-      _cygrpc.channel_credentials_composite(
-          channel_credentials._credentials, call_credentials._credentials))
+      _credential_composition.channel(
+          channel_credentials._credentials, cygrpc_call_credentials))
 
 
 def ssl_server_credentials(
@@ -1207,25 +1211,23 @@
   return _channel.Channel(target, options, credentials._credentials)
 
 
-def server(generic_rpc_handlers, thread_pool, options=None):
+def server(thread_pool, handlers=None):
   """Creates a Server with which RPCs can be serviced.
 
-  The GenericRpcHandlers passed to this function needn't be the only
-  GenericRpcHandlers that will be used to serve RPCs; others may be added later
-  by calling add_generic_rpc_handlers any time before the returned server is
-  started.
-
   Args:
-    generic_rpc_handlers: Some number of GenericRpcHandlers that will be used
-      to service RPCs after the returned Server is started.
     thread_pool: A futures.ThreadPoolExecutor to be used by the returned Server
       to service RPCs.
+    handlers: An optional sequence of GenericRpcHandlers to be used to service
+      RPCs after the returned Server is started. These handlers need not be the
+      only handlers the returned Server will use to service RPCs; other
+      handlers may later be added to the returned Server by calling its
+      add_generic_rpc_handlers method any time before it is started.
 
   Returns:
     A Server with which RPCs can be serviced.
   """
   from grpc import _server
-  return _server.Server(generic_rpc_handlers, thread_pool)
+  return _server.Server(thread_pool, () if handlers is None else handlers)
 
 
 ###################################  __all__  #################################
diff --git a/src/python/grpcio/grpc/_channel.py b/src/python/grpcio/grpc/_channel.py
index a89b501..29dbc3a 100644
--- a/src/python/grpcio/grpc/_channel.py
+++ b/src/python/grpcio/grpc/_channel.py
@@ -195,7 +195,8 @@
                 cygrpc.operation_send_message(
                     serialized_request, _EMPTY_FLAGS),
             )
-            call.start_batch(cygrpc.Operations(operations), event_handler)
+            call.start_client_batch(cygrpc.Operations(operations),
+                                    event_handler)
             state.due.add(cygrpc.OperationType.send_message)
             while True:
               state.condition.wait()
@@ -211,7 +212,7 @@
         operations = (
             cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
         )
-        call.start_batch(cygrpc.Operations(operations), event_handler)
+        call.start_client_batch(cygrpc.Operations(operations), event_handler)
         state.due.add(cygrpc.OperationType.send_close_from_client)
 
   def stop_consumption_thread(timeout):
@@ -312,7 +313,7 @@
       if self._state.code is None:
         event_handler = _event_handler(
             self._state, self._call, self._response_deserializer)
-        self._call.start_batch(
+        self._call.start_client_batch(
             cygrpc.Operations(
                 (cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
             event_handler)
@@ -471,7 +472,7 @@
           None, 0, completion_queue, self._method, None, deadline_timespec)
       if credentials is not None:
         call.set_credentials(credentials._credentials)
-      call.start_batch(cygrpc.Operations(operations), None)
+      call.start_client_batch(cygrpc.Operations(operations), None)
       _handle_event(completion_queue.poll(), state, self._response_deserializer)
       return state, deadline
 
@@ -495,7 +496,7 @@
         call.set_credentials(credentials._credentials)
       event_handler = _event_handler(state, call, self._response_deserializer)
       with state.condition:
-        call.start_batch(cygrpc.Operations(operations), event_handler)
+        call.start_client_batch(cygrpc.Operations(operations), event_handler)
       return _Rendezvous(state, call, self._response_deserializer, deadline)
 
 
@@ -523,7 +524,7 @@
         call.set_credentials(credentials._credentials)
       event_handler = _event_handler(state, call, self._response_deserializer)
       with state.condition:
-        call.start_batch(
+        call.start_client_batch(
             cygrpc.Operations(
                 (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
             event_handler)
@@ -534,7 +535,7 @@
             cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
             cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
         )
-        call.start_batch(cygrpc.Operations(operations), event_handler)
+        call.start_client_batch(cygrpc.Operations(operations), event_handler)
       return _Rendezvous(state, call, self._response_deserializer, deadline)
 
 
@@ -558,7 +559,7 @@
     if credentials is not None:
       call.set_credentials(credentials._credentials)
     with state.condition:
-      call.start_batch(
+      call.start_client_batch(
           cygrpc.Operations(
               (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
           None)
@@ -568,7 +569,7 @@
           cygrpc.operation_receive_message(_EMPTY_FLAGS),
           cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
       )
-      call.start_batch(cygrpc.Operations(operations), None)
+      call.start_client_batch(cygrpc.Operations(operations), None)
       _consume_request_iterator(
           request_iterator, state, call, self._request_serializer)
     while True:
@@ -602,7 +603,7 @@
       call.set_credentials(credentials._credentials)
     event_handler = _event_handler(state, call, self._response_deserializer)
     with state.condition:
-      call.start_batch(
+      call.start_client_batch(
           cygrpc.Operations(
               (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
           event_handler)
@@ -612,7 +613,7 @@
           cygrpc.operation_receive_message(_EMPTY_FLAGS),
           cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
       )
-      call.start_batch(cygrpc.Operations(operations), event_handler)
+      call.start_client_batch(cygrpc.Operations(operations), event_handler)
       _consume_request_iterator(
           request_iterator, state, call, self._request_serializer)
     return _Rendezvous(state, call, self._response_deserializer, deadline)
@@ -639,7 +640,7 @@
       call.set_credentials(credentials._credentials)
     event_handler = _event_handler(state, call, self._response_deserializer)
     with state.condition:
-      call.start_batch(
+      call.start_client_batch(
           cygrpc.Operations(
               (cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),)),
           event_handler)
@@ -648,7 +649,7 @@
               _common.cygrpc_metadata(metadata), _EMPTY_FLAGS),
           cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
       )
-      call.start_batch(cygrpc.Operations(operations), event_handler)
+      call.start_client_batch(cygrpc.Operations(operations), event_handler)
       _consume_request_iterator(
           request_iterator, state, call, self._request_serializer)
     return _Rendezvous(state, call, self._response_deserializer, deadline)
diff --git a/src/python/grpcio/grpc/_credential_composition.py b/src/python/grpcio/grpc/_credential_composition.py
new file mode 100644
index 0000000..9cb5508
--- /dev/null
+++ b/src/python/grpcio/grpc/_credential_composition.py
@@ -0,0 +1,48 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from grpc._cython import cygrpc
+
+
+def _call(call_credentialses):
+  call_credentials_iterator = iter(call_credentialses)
+  composition = next(call_credentials_iterator)
+  for additional_call_credentials in call_credentials_iterator:
+    composition = cygrpc.call_credentials_composite(
+        composition, additional_call_credentials)
+  return composition
+
+
+def call(call_credentialses):
+  return _call(call_credentialses)
+
+
+def channel(channel_credentials, call_credentialses):
+  return cygrpc.channel_credentials_composite(
+      channel_credentials, _call(call_credentialses))
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/call.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/call.pyx.pxi
index a09bbc7..6570dcd 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/call.pyx.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/call.pyx.pxi
@@ -37,13 +37,16 @@
     self.c_call = NULL
     self.references = []
 
-  def start_batch(self, operations, tag):
+  def _start_batch(self, operations, tag, retain_self):
     if not self.is_valid:
       raise ValueError("invalid call object cannot be used from Python")
     cdef grpc_call_error result
     cdef Operations cy_operations = Operations(operations)
     cdef OperationTag operation_tag = OperationTag(tag)
-    operation_tag.operation_call = self
+    if retain_self:
+      operation_tag.operation_call = self
+    else:
+      operation_tag.operation_call = None
     operation_tag.batch_operations = cy_operations
     cpython.Py_INCREF(operation_tag)
     with nogil:
@@ -52,6 +55,14 @@
           <cpython.PyObject *>operation_tag, NULL)
     return result
 
+  def start_client_batch(self, operations, tag):
+    # We don't reference this call in the operations tag because
+    # it should be cancelled when it goes out of scope
+    return self._start_batch(operations, tag, False)
+
+  def start_server_batch(self, operations, tag):
+    return self._start_batch(operations, tag, True)
+
   def cancel(
       self, grpc_status_code error_code=GRPC_STATUS__DO_NOT_USE,
       details=None):
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/records.pxd.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/records.pxd.pxi
index 0474697..96c5b02 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/records.pxd.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/records.pxd.pxi
@@ -58,14 +58,14 @@
   cdef readonly bint success
   cdef readonly object tag
 
-  # For operations with calls
-  cdef readonly Call operation_call
-
   # For Server.request_call
   cdef readonly bint is_new_request
   cdef readonly CallDetails request_call_details
   cdef readonly Metadata request_metadata
 
+  # For server calls
+  cdef readonly Call operation_call
+
   # For Call.start_batch
   cdef readonly Operations batch_operations
 
diff --git a/src/python/grpcio/grpc/_cython/cygrpc.pyx b/src/python/grpcio/grpc/_cython/cygrpc.pyx
index 7a8d0dd..e055d32 100644
--- a/src/python/grpcio/grpc/_cython/cygrpc.pyx
+++ b/src/python/grpcio/grpc/_cython/cygrpc.pyx
@@ -50,13 +50,6 @@
 
 
 def _initialize():
-  if 'win32' in sys.platform:
-    filename = pkg_resources.resource_filename(
-        'grpc._cython', '_windows/grpc_c.64.python')
-    if not isinstance(filename, bytes):
-      filename = filename.encode()
-    if not pygrpc_load_core(filename):
-      raise ImportError('failed to load core gRPC library')
   if not pygrpc_initialize_core():
     raise ImportError('failed to initialize core gRPC library')
 
diff --git a/src/python/grpcio/grpc/_cython/imports.generated.c b/src/python/grpcio/grpc/_cython/imports.generated.c
index d78ec2f..c0080b5 100644
--- a/src/python/grpcio/grpc/_cython/imports.generated.c
+++ b/src/python/grpcio/grpc/_cython/imports.generated.c
@@ -31,562 +31,7 @@
  *
  */
 
+/* TODO(atash) remove cruft */
 #include <grpc/support/port_platform.h>
 
 #include "imports.generated.h"
-
-#ifdef GPR_WINDOWS
-
-census_initialize_type census_initialize_import;
-census_shutdown_type census_shutdown_import;
-census_supported_type census_supported_import;
-census_enabled_type census_enabled_import;
-census_context_create_type census_context_create_import;
-census_context_destroy_type census_context_destroy_import;
-census_context_get_status_type census_context_get_status_import;
-census_context_initialize_iterator_type census_context_initialize_iterator_import;
-census_context_next_tag_type census_context_next_tag_import;
-census_context_get_tag_type census_context_get_tag_import;
-census_context_encode_type census_context_encode_import;
-census_context_decode_type census_context_decode_import;
-census_trace_mask_type census_trace_mask_import;
-census_set_trace_mask_type census_set_trace_mask_import;
-census_start_rpc_op_timestamp_type census_start_rpc_op_timestamp_import;
-census_start_client_rpc_op_type census_start_client_rpc_op_import;
-census_set_rpc_client_peer_type census_set_rpc_client_peer_import;
-census_start_server_rpc_op_type census_start_server_rpc_op_import;
-census_start_op_type census_start_op_import;
-census_end_op_type census_end_op_import;
-census_trace_print_type census_trace_print_import;
-census_trace_scan_start_type census_trace_scan_start_import;
-census_get_trace_record_type census_get_trace_record_import;
-census_trace_scan_end_type census_trace_scan_end_import;
-census_record_values_type census_record_values_import;
-census_view_create_type census_view_create_import;
-census_view_delete_type census_view_delete_import;
-census_view_metric_type census_view_metric_import;
-census_view_naggregations_type census_view_naggregations_import;
-census_view_tags_type census_view_tags_import;
-census_view_aggregrations_type census_view_aggregrations_import;
-census_view_get_data_type census_view_get_data_import;
-census_view_reset_type census_view_reset_import;
-grpc_compression_algorithm_parse_type grpc_compression_algorithm_parse_import;
-grpc_compression_algorithm_name_type grpc_compression_algorithm_name_import;
-grpc_compression_algorithm_for_level_type grpc_compression_algorithm_for_level_import;
-grpc_compression_options_init_type grpc_compression_options_init_import;
-grpc_compression_options_enable_algorithm_type grpc_compression_options_enable_algorithm_import;
-grpc_compression_options_disable_algorithm_type grpc_compression_options_disable_algorithm_import;
-grpc_compression_options_is_algorithm_enabled_type grpc_compression_options_is_algorithm_enabled_import;
-grpc_metadata_array_init_type grpc_metadata_array_init_import;
-grpc_metadata_array_destroy_type grpc_metadata_array_destroy_import;
-grpc_call_details_init_type grpc_call_details_init_import;
-grpc_call_details_destroy_type grpc_call_details_destroy_import;
-grpc_register_plugin_type grpc_register_plugin_import;
-grpc_init_type grpc_init_import;
-grpc_shutdown_type grpc_shutdown_import;
-grpc_version_string_type grpc_version_string_import;
-grpc_completion_queue_create_type grpc_completion_queue_create_import;
-grpc_completion_queue_next_type grpc_completion_queue_next_import;
-grpc_completion_queue_pluck_type grpc_completion_queue_pluck_import;
-grpc_completion_queue_shutdown_type grpc_completion_queue_shutdown_import;
-grpc_completion_queue_destroy_type grpc_completion_queue_destroy_import;
-grpc_alarm_create_type grpc_alarm_create_import;
-grpc_alarm_cancel_type grpc_alarm_cancel_import;
-grpc_alarm_destroy_type grpc_alarm_destroy_import;
-grpc_channel_check_connectivity_state_type grpc_channel_check_connectivity_state_import;
-grpc_channel_watch_connectivity_state_type grpc_channel_watch_connectivity_state_import;
-grpc_channel_create_call_type grpc_channel_create_call_import;
-grpc_channel_ping_type grpc_channel_ping_import;
-grpc_channel_register_call_type grpc_channel_register_call_import;
-grpc_channel_create_registered_call_type grpc_channel_create_registered_call_import;
-grpc_call_start_batch_type grpc_call_start_batch_import;
-grpc_call_get_peer_type grpc_call_get_peer_import;
-grpc_census_call_set_context_type grpc_census_call_set_context_import;
-grpc_census_call_get_context_type grpc_census_call_get_context_import;
-grpc_channel_get_target_type grpc_channel_get_target_import;
-grpc_insecure_channel_create_type grpc_insecure_channel_create_import;
-grpc_lame_client_channel_create_type grpc_lame_client_channel_create_import;
-grpc_channel_destroy_type grpc_channel_destroy_import;
-grpc_call_cancel_type grpc_call_cancel_import;
-grpc_call_cancel_with_status_type grpc_call_cancel_with_status_import;
-grpc_call_destroy_type grpc_call_destroy_import;
-grpc_server_request_call_type grpc_server_request_call_import;
-grpc_server_register_method_type grpc_server_register_method_import;
-grpc_server_request_registered_call_type grpc_server_request_registered_call_import;
-grpc_server_create_type grpc_server_create_import;
-grpc_server_register_completion_queue_type grpc_server_register_completion_queue_import;
-grpc_server_register_non_listening_completion_queue_type grpc_server_register_non_listening_completion_queue_import;
-grpc_server_add_insecure_http2_port_type grpc_server_add_insecure_http2_port_import;
-grpc_server_start_type grpc_server_start_import;
-grpc_server_shutdown_and_notify_type grpc_server_shutdown_and_notify_import;
-grpc_server_cancel_all_calls_type grpc_server_cancel_all_calls_import;
-grpc_server_destroy_type grpc_server_destroy_import;
-grpc_tracer_set_enabled_type grpc_tracer_set_enabled_import;
-grpc_header_key_is_legal_type grpc_header_key_is_legal_import;
-grpc_header_nonbin_value_is_legal_type grpc_header_nonbin_value_is_legal_import;
-grpc_is_binary_header_type grpc_is_binary_header_import;
-grpc_call_error_to_string_type grpc_call_error_to_string_import;
-grpc_insecure_channel_create_from_fd_type grpc_insecure_channel_create_from_fd_import;
-grpc_server_add_insecure_channel_from_fd_type grpc_server_add_insecure_channel_from_fd_import;
-grpc_use_signal_type grpc_use_signal_import;
-grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
-grpc_auth_context_property_iterator_type grpc_auth_context_property_iterator_import;
-grpc_auth_context_peer_identity_type grpc_auth_context_peer_identity_import;
-grpc_auth_context_find_properties_by_name_type grpc_auth_context_find_properties_by_name_import;
-grpc_auth_context_peer_identity_property_name_type grpc_auth_context_peer_identity_property_name_import;
-grpc_auth_context_peer_is_authenticated_type grpc_auth_context_peer_is_authenticated_import;
-grpc_call_auth_context_type grpc_call_auth_context_import;
-grpc_auth_context_release_type grpc_auth_context_release_import;
-grpc_auth_context_add_property_type grpc_auth_context_add_property_import;
-grpc_auth_context_add_cstring_property_type grpc_auth_context_add_cstring_property_import;
-grpc_auth_context_set_peer_identity_property_name_type grpc_auth_context_set_peer_identity_property_name_import;
-grpc_channel_credentials_release_type grpc_channel_credentials_release_import;
-grpc_google_default_credentials_create_type grpc_google_default_credentials_create_import;
-grpc_set_ssl_roots_override_callback_type grpc_set_ssl_roots_override_callback_import;
-grpc_ssl_credentials_create_type grpc_ssl_credentials_create_import;
-grpc_call_credentials_release_type grpc_call_credentials_release_import;
-grpc_composite_channel_credentials_create_type grpc_composite_channel_credentials_create_import;
-grpc_composite_call_credentials_create_type grpc_composite_call_credentials_create_import;
-grpc_google_compute_engine_credentials_create_type grpc_google_compute_engine_credentials_create_import;
-grpc_max_auth_token_lifetime_type grpc_max_auth_token_lifetime_import;
-grpc_service_account_jwt_access_credentials_create_type grpc_service_account_jwt_access_credentials_create_import;
-grpc_google_refresh_token_credentials_create_type grpc_google_refresh_token_credentials_create_import;
-grpc_access_token_credentials_create_type grpc_access_token_credentials_create_import;
-grpc_google_iam_credentials_create_type grpc_google_iam_credentials_create_import;
-grpc_metadata_credentials_create_from_plugin_type grpc_metadata_credentials_create_from_plugin_import;
-grpc_secure_channel_create_type grpc_secure_channel_create_import;
-grpc_server_credentials_release_type grpc_server_credentials_release_import;
-grpc_ssl_server_credentials_create_type grpc_ssl_server_credentials_create_import;
-grpc_ssl_server_credentials_create_ex_type grpc_ssl_server_credentials_create_ex_import;
-grpc_server_add_secure_http2_port_type grpc_server_add_secure_http2_port_import;
-grpc_call_set_credentials_type grpc_call_set_credentials_import;
-grpc_server_credentials_set_auth_metadata_processor_type grpc_server_credentials_set_auth_metadata_processor_import;
-gpr_malloc_type gpr_malloc_import;
-gpr_free_type gpr_free_import;
-gpr_realloc_type gpr_realloc_import;
-gpr_malloc_aligned_type gpr_malloc_aligned_import;
-gpr_free_aligned_type gpr_free_aligned_import;
-gpr_set_allocation_functions_type gpr_set_allocation_functions_import;
-gpr_get_allocation_functions_type gpr_get_allocation_functions_import;
-grpc_raw_byte_buffer_create_type grpc_raw_byte_buffer_create_import;
-grpc_raw_compressed_byte_buffer_create_type grpc_raw_compressed_byte_buffer_create_import;
-grpc_byte_buffer_copy_type grpc_byte_buffer_copy_import;
-grpc_byte_buffer_length_type grpc_byte_buffer_length_import;
-grpc_byte_buffer_destroy_type grpc_byte_buffer_destroy_import;
-grpc_byte_buffer_reader_init_type grpc_byte_buffer_reader_init_import;
-grpc_byte_buffer_reader_destroy_type grpc_byte_buffer_reader_destroy_import;
-grpc_byte_buffer_reader_next_type grpc_byte_buffer_reader_next_import;
-grpc_byte_buffer_reader_readall_type grpc_byte_buffer_reader_readall_import;
-grpc_raw_byte_buffer_from_reader_type grpc_raw_byte_buffer_from_reader_import;
-gpr_log_type gpr_log_import;
-gpr_log_message_type gpr_log_message_import;
-gpr_set_log_verbosity_type gpr_set_log_verbosity_import;
-gpr_log_verbosity_init_type gpr_log_verbosity_init_import;
-gpr_set_log_function_type gpr_set_log_function_import;
-gpr_slice_ref_type gpr_slice_ref_import;
-gpr_slice_unref_type gpr_slice_unref_import;
-gpr_slice_new_type gpr_slice_new_import;
-gpr_slice_new_with_len_type gpr_slice_new_with_len_import;
-gpr_slice_malloc_type gpr_slice_malloc_import;
-gpr_slice_from_copied_string_type gpr_slice_from_copied_string_import;
-gpr_slice_from_copied_buffer_type gpr_slice_from_copied_buffer_import;
-gpr_slice_from_static_string_type gpr_slice_from_static_string_import;
-gpr_slice_sub_type gpr_slice_sub_import;
-gpr_slice_sub_no_ref_type gpr_slice_sub_no_ref_import;
-gpr_slice_split_tail_type gpr_slice_split_tail_import;
-gpr_slice_split_head_type gpr_slice_split_head_import;
-gpr_empty_slice_type gpr_empty_slice_import;
-gpr_slice_cmp_type gpr_slice_cmp_import;
-gpr_slice_str_cmp_type gpr_slice_str_cmp_import;
-gpr_slice_buffer_init_type gpr_slice_buffer_init_import;
-gpr_slice_buffer_destroy_type gpr_slice_buffer_destroy_import;
-gpr_slice_buffer_add_type gpr_slice_buffer_add_import;
-gpr_slice_buffer_add_indexed_type gpr_slice_buffer_add_indexed_import;
-gpr_slice_buffer_addn_type gpr_slice_buffer_addn_import;
-gpr_slice_buffer_tiny_add_type gpr_slice_buffer_tiny_add_import;
-gpr_slice_buffer_pop_type gpr_slice_buffer_pop_import;
-gpr_slice_buffer_reset_and_unref_type gpr_slice_buffer_reset_and_unref_import;
-gpr_slice_buffer_swap_type gpr_slice_buffer_swap_import;
-gpr_slice_buffer_move_into_type gpr_slice_buffer_move_into_import;
-gpr_slice_buffer_trim_end_type gpr_slice_buffer_trim_end_import;
-gpr_slice_buffer_move_first_type gpr_slice_buffer_move_first_import;
-gpr_slice_buffer_take_first_type gpr_slice_buffer_take_first_import;
-gpr_mu_init_type gpr_mu_init_import;
-gpr_mu_destroy_type gpr_mu_destroy_import;
-gpr_mu_lock_type gpr_mu_lock_import;
-gpr_mu_unlock_type gpr_mu_unlock_import;
-gpr_mu_trylock_type gpr_mu_trylock_import;
-gpr_cv_init_type gpr_cv_init_import;
-gpr_cv_destroy_type gpr_cv_destroy_import;
-gpr_cv_wait_type gpr_cv_wait_import;
-gpr_cv_signal_type gpr_cv_signal_import;
-gpr_cv_broadcast_type gpr_cv_broadcast_import;
-gpr_once_init_type gpr_once_init_import;
-gpr_event_init_type gpr_event_init_import;
-gpr_event_set_type gpr_event_set_import;
-gpr_event_get_type gpr_event_get_import;
-gpr_event_wait_type gpr_event_wait_import;
-gpr_ref_init_type gpr_ref_init_import;
-gpr_ref_type gpr_ref_import;
-gpr_ref_non_zero_type gpr_ref_non_zero_import;
-gpr_refn_type gpr_refn_import;
-gpr_unref_type gpr_unref_import;
-gpr_stats_init_type gpr_stats_init_import;
-gpr_stats_inc_type gpr_stats_inc_import;
-gpr_stats_read_type gpr_stats_read_import;
-gpr_time_0_type gpr_time_0_import;
-gpr_inf_future_type gpr_inf_future_import;
-gpr_inf_past_type gpr_inf_past_import;
-gpr_time_init_type gpr_time_init_import;
-gpr_now_type gpr_now_import;
-gpr_convert_clock_type_type gpr_convert_clock_type_import;
-gpr_time_cmp_type gpr_time_cmp_import;
-gpr_time_max_type gpr_time_max_import;
-gpr_time_min_type gpr_time_min_import;
-gpr_time_add_type gpr_time_add_import;
-gpr_time_sub_type gpr_time_sub_import;
-gpr_time_from_micros_type gpr_time_from_micros_import;
-gpr_time_from_nanos_type gpr_time_from_nanos_import;
-gpr_time_from_millis_type gpr_time_from_millis_import;
-gpr_time_from_seconds_type gpr_time_from_seconds_import;
-gpr_time_from_minutes_type gpr_time_from_minutes_import;
-gpr_time_from_hours_type gpr_time_from_hours_import;
-gpr_time_to_millis_type gpr_time_to_millis_import;
-gpr_time_similar_type gpr_time_similar_import;
-gpr_sleep_until_type gpr_sleep_until_import;
-gpr_timespec_to_micros_type gpr_timespec_to_micros_import;
-gpr_avl_create_type gpr_avl_create_import;
-gpr_avl_ref_type gpr_avl_ref_import;
-gpr_avl_unref_type gpr_avl_unref_import;
-gpr_avl_add_type gpr_avl_add_import;
-gpr_avl_remove_type gpr_avl_remove_import;
-gpr_avl_get_type gpr_avl_get_import;
-gpr_avl_maybe_get_type gpr_avl_maybe_get_import;
-gpr_avl_is_empty_type gpr_avl_is_empty_import;
-gpr_cmdline_create_type gpr_cmdline_create_import;
-gpr_cmdline_add_int_type gpr_cmdline_add_int_import;
-gpr_cmdline_add_flag_type gpr_cmdline_add_flag_import;
-gpr_cmdline_add_string_type gpr_cmdline_add_string_import;
-gpr_cmdline_on_extra_arg_type gpr_cmdline_on_extra_arg_import;
-gpr_cmdline_set_survive_failure_type gpr_cmdline_set_survive_failure_import;
-gpr_cmdline_parse_type gpr_cmdline_parse_import;
-gpr_cmdline_destroy_type gpr_cmdline_destroy_import;
-gpr_cmdline_usage_string_type gpr_cmdline_usage_string_import;
-gpr_cpu_num_cores_type gpr_cpu_num_cores_import;
-gpr_cpu_current_cpu_type gpr_cpu_current_cpu_import;
-gpr_histogram_create_type gpr_histogram_create_import;
-gpr_histogram_destroy_type gpr_histogram_destroy_import;
-gpr_histogram_add_type gpr_histogram_add_import;
-gpr_histogram_merge_type gpr_histogram_merge_import;
-gpr_histogram_percentile_type gpr_histogram_percentile_import;
-gpr_histogram_mean_type gpr_histogram_mean_import;
-gpr_histogram_stddev_type gpr_histogram_stddev_import;
-gpr_histogram_variance_type gpr_histogram_variance_import;
-gpr_histogram_maximum_type gpr_histogram_maximum_import;
-gpr_histogram_minimum_type gpr_histogram_minimum_import;
-gpr_histogram_count_type gpr_histogram_count_import;
-gpr_histogram_sum_type gpr_histogram_sum_import;
-gpr_histogram_sum_of_squares_type gpr_histogram_sum_of_squares_import;
-gpr_histogram_get_contents_type gpr_histogram_get_contents_import;
-gpr_histogram_merge_contents_type gpr_histogram_merge_contents_import;
-gpr_join_host_port_type gpr_join_host_port_import;
-gpr_split_host_port_type gpr_split_host_port_import;
-gpr_format_message_type gpr_format_message_import;
-gpr_strdup_type gpr_strdup_import;
-gpr_asprintf_type gpr_asprintf_import;
-gpr_subprocess_binary_extension_type gpr_subprocess_binary_extension_import;
-gpr_subprocess_create_type gpr_subprocess_create_import;
-gpr_subprocess_destroy_type gpr_subprocess_destroy_import;
-gpr_subprocess_join_type gpr_subprocess_join_import;
-gpr_subprocess_interrupt_type gpr_subprocess_interrupt_import;
-gpr_thd_new_type gpr_thd_new_import;
-gpr_thd_options_default_type gpr_thd_options_default_import;
-gpr_thd_options_set_detached_type gpr_thd_options_set_detached_import;
-gpr_thd_options_set_joinable_type gpr_thd_options_set_joinable_import;
-gpr_thd_options_is_detached_type gpr_thd_options_is_detached_import;
-gpr_thd_options_is_joinable_type gpr_thd_options_is_joinable_import;
-gpr_thd_currentid_type gpr_thd_currentid_import;
-gpr_thd_join_type gpr_thd_join_import;
-
-#ifdef __cplusplus
-extern "C" {
-#endif  /* __cpluslus */
-
-void pygrpc_load_imports(HMODULE library) {
-  census_initialize_import = (census_initialize_type) GetProcAddress(library, "census_initialize");
-  census_shutdown_import = (census_shutdown_type) GetProcAddress(library, "census_shutdown");
-  census_supported_import = (census_supported_type) GetProcAddress(library, "census_supported");
-  census_enabled_import = (census_enabled_type) GetProcAddress(library, "census_enabled");
-  census_context_create_import = (census_context_create_type) GetProcAddress(library, "census_context_create");
-  census_context_destroy_import = (census_context_destroy_type) GetProcAddress(library, "census_context_destroy");
-  census_context_get_status_import = (census_context_get_status_type) GetProcAddress(library, "census_context_get_status");
-  census_context_initialize_iterator_import = (census_context_initialize_iterator_type) GetProcAddress(library, "census_context_initialize_iterator");
-  census_context_next_tag_import = (census_context_next_tag_type) GetProcAddress(library, "census_context_next_tag");
-  census_context_get_tag_import = (census_context_get_tag_type) GetProcAddress(library, "census_context_get_tag");
-  census_context_encode_import = (census_context_encode_type) GetProcAddress(library, "census_context_encode");
-  census_context_decode_import = (census_context_decode_type) GetProcAddress(library, "census_context_decode");
-  census_trace_mask_import = (census_trace_mask_type) GetProcAddress(library, "census_trace_mask");
-  census_set_trace_mask_import = (census_set_trace_mask_type) GetProcAddress(library, "census_set_trace_mask");
-  census_start_rpc_op_timestamp_import = (census_start_rpc_op_timestamp_type) GetProcAddress(library, "census_start_rpc_op_timestamp");
-  census_start_client_rpc_op_import = (census_start_client_rpc_op_type) GetProcAddress(library, "census_start_client_rpc_op");
-  census_set_rpc_client_peer_import = (census_set_rpc_client_peer_type) GetProcAddress(library, "census_set_rpc_client_peer");
-  census_start_server_rpc_op_import = (census_start_server_rpc_op_type) GetProcAddress(library, "census_start_server_rpc_op");
-  census_start_op_import = (census_start_op_type) GetProcAddress(library, "census_start_op");
-  census_end_op_import = (census_end_op_type) GetProcAddress(library, "census_end_op");
-  census_trace_print_import = (census_trace_print_type) GetProcAddress(library, "census_trace_print");
-  census_trace_scan_start_import = (census_trace_scan_start_type) GetProcAddress(library, "census_trace_scan_start");
-  census_get_trace_record_import = (census_get_trace_record_type) GetProcAddress(library, "census_get_trace_record");
-  census_trace_scan_end_import = (census_trace_scan_end_type) GetProcAddress(library, "census_trace_scan_end");
-  census_record_values_import = (census_record_values_type) GetProcAddress(library, "census_record_values");
-  census_view_create_import = (census_view_create_type) GetProcAddress(library, "census_view_create");
-  census_view_delete_import = (census_view_delete_type) GetProcAddress(library, "census_view_delete");
-  census_view_metric_import = (census_view_metric_type) GetProcAddress(library, "census_view_metric");
-  census_view_naggregations_import = (census_view_naggregations_type) GetProcAddress(library, "census_view_naggregations");
-  census_view_tags_import = (census_view_tags_type) GetProcAddress(library, "census_view_tags");
-  census_view_aggregrations_import = (census_view_aggregrations_type) GetProcAddress(library, "census_view_aggregrations");
-  census_view_get_data_import = (census_view_get_data_type) GetProcAddress(library, "census_view_get_data");
-  census_view_reset_import = (census_view_reset_type) GetProcAddress(library, "census_view_reset");
-  grpc_compression_algorithm_parse_import = (grpc_compression_algorithm_parse_type) GetProcAddress(library, "grpc_compression_algorithm_parse");
-  grpc_compression_algorithm_name_import = (grpc_compression_algorithm_name_type) GetProcAddress(library, "grpc_compression_algorithm_name");
-  grpc_compression_algorithm_for_level_import = (grpc_compression_algorithm_for_level_type) GetProcAddress(library, "grpc_compression_algorithm_for_level");
-  grpc_compression_options_init_import = (grpc_compression_options_init_type) GetProcAddress(library, "grpc_compression_options_init");
-  grpc_compression_options_enable_algorithm_import = (grpc_compression_options_enable_algorithm_type) GetProcAddress(library, "grpc_compression_options_enable_algorithm");
-  grpc_compression_options_disable_algorithm_import = (grpc_compression_options_disable_algorithm_type) GetProcAddress(library, "grpc_compression_options_disable_algorithm");
-  grpc_compression_options_is_algorithm_enabled_import = (grpc_compression_options_is_algorithm_enabled_type) GetProcAddress(library, "grpc_compression_options_is_algorithm_enabled");
-  grpc_metadata_array_init_import = (grpc_metadata_array_init_type) GetProcAddress(library, "grpc_metadata_array_init");
-  grpc_metadata_array_destroy_import = (grpc_metadata_array_destroy_type) GetProcAddress(library, "grpc_metadata_array_destroy");
-  grpc_call_details_init_import = (grpc_call_details_init_type) GetProcAddress(library, "grpc_call_details_init");
-  grpc_call_details_destroy_import = (grpc_call_details_destroy_type) GetProcAddress(library, "grpc_call_details_destroy");
-  grpc_register_plugin_import = (grpc_register_plugin_type) GetProcAddress(library, "grpc_register_plugin");
-  grpc_init_import = (grpc_init_type) GetProcAddress(library, "grpc_init");
-  grpc_shutdown_import = (grpc_shutdown_type) GetProcAddress(library, "grpc_shutdown");
-  grpc_version_string_import = (grpc_version_string_type) GetProcAddress(library, "grpc_version_string");
-  grpc_completion_queue_create_import = (grpc_completion_queue_create_type) GetProcAddress(library, "grpc_completion_queue_create");
-  grpc_completion_queue_next_import = (grpc_completion_queue_next_type) GetProcAddress(library, "grpc_completion_queue_next");
-  grpc_completion_queue_pluck_import = (grpc_completion_queue_pluck_type) GetProcAddress(library, "grpc_completion_queue_pluck");
-  grpc_completion_queue_shutdown_import = (grpc_completion_queue_shutdown_type) GetProcAddress(library, "grpc_completion_queue_shutdown");
-  grpc_completion_queue_destroy_import = (grpc_completion_queue_destroy_type) GetProcAddress(library, "grpc_completion_queue_destroy");
-  grpc_alarm_create_import = (grpc_alarm_create_type) GetProcAddress(library, "grpc_alarm_create");
-  grpc_alarm_cancel_import = (grpc_alarm_cancel_type) GetProcAddress(library, "grpc_alarm_cancel");
-  grpc_alarm_destroy_import = (grpc_alarm_destroy_type) GetProcAddress(library, "grpc_alarm_destroy");
-  grpc_channel_check_connectivity_state_import = (grpc_channel_check_connectivity_state_type) GetProcAddress(library, "grpc_channel_check_connectivity_state");
-  grpc_channel_watch_connectivity_state_import = (grpc_channel_watch_connectivity_state_type) GetProcAddress(library, "grpc_channel_watch_connectivity_state");
-  grpc_channel_create_call_import = (grpc_channel_create_call_type) GetProcAddress(library, "grpc_channel_create_call");
-  grpc_channel_ping_import = (grpc_channel_ping_type) GetProcAddress(library, "grpc_channel_ping");
-  grpc_channel_register_call_import = (grpc_channel_register_call_type) GetProcAddress(library, "grpc_channel_register_call");
-  grpc_channel_create_registered_call_import = (grpc_channel_create_registered_call_type) GetProcAddress(library, "grpc_channel_create_registered_call");
-  grpc_call_start_batch_import = (grpc_call_start_batch_type) GetProcAddress(library, "grpc_call_start_batch");
-  grpc_call_get_peer_import = (grpc_call_get_peer_type) GetProcAddress(library, "grpc_call_get_peer");
-  grpc_census_call_set_context_import = (grpc_census_call_set_context_type) GetProcAddress(library, "grpc_census_call_set_context");
-  grpc_census_call_get_context_import = (grpc_census_call_get_context_type) GetProcAddress(library, "grpc_census_call_get_context");
-  grpc_channel_get_target_import = (grpc_channel_get_target_type) GetProcAddress(library, "grpc_channel_get_target");
-  grpc_insecure_channel_create_import = (grpc_insecure_channel_create_type) GetProcAddress(library, "grpc_insecure_channel_create");
-  grpc_lame_client_channel_create_import = (grpc_lame_client_channel_create_type) GetProcAddress(library, "grpc_lame_client_channel_create");
-  grpc_channel_destroy_import = (grpc_channel_destroy_type) GetProcAddress(library, "grpc_channel_destroy");
-  grpc_call_cancel_import = (grpc_call_cancel_type) GetProcAddress(library, "grpc_call_cancel");
-  grpc_call_cancel_with_status_import = (grpc_call_cancel_with_status_type) GetProcAddress(library, "grpc_call_cancel_with_status");
-  grpc_call_destroy_import = (grpc_call_destroy_type) GetProcAddress(library, "grpc_call_destroy");
-  grpc_server_request_call_import = (grpc_server_request_call_type) GetProcAddress(library, "grpc_server_request_call");
-  grpc_server_register_method_import = (grpc_server_register_method_type) GetProcAddress(library, "grpc_server_register_method");
-  grpc_server_request_registered_call_import = (grpc_server_request_registered_call_type) GetProcAddress(library, "grpc_server_request_registered_call");
-  grpc_server_create_import = (grpc_server_create_type) GetProcAddress(library, "grpc_server_create");
-  grpc_server_register_completion_queue_import = (grpc_server_register_completion_queue_type) GetProcAddress(library, "grpc_server_register_completion_queue");
-  grpc_server_register_non_listening_completion_queue_import = (grpc_server_register_non_listening_completion_queue_type) GetProcAddress(library, "grpc_server_register_non_listening_completion_queue");
-  grpc_server_add_insecure_http2_port_import = (grpc_server_add_insecure_http2_port_type) GetProcAddress(library, "grpc_server_add_insecure_http2_port");
-  grpc_server_start_import = (grpc_server_start_type) GetProcAddress(library, "grpc_server_start");
-  grpc_server_shutdown_and_notify_import = (grpc_server_shutdown_and_notify_type) GetProcAddress(library, "grpc_server_shutdown_and_notify");
-  grpc_server_cancel_all_calls_import = (grpc_server_cancel_all_calls_type) GetProcAddress(library, "grpc_server_cancel_all_calls");
-  grpc_server_destroy_import = (grpc_server_destroy_type) GetProcAddress(library, "grpc_server_destroy");
-  grpc_tracer_set_enabled_import = (grpc_tracer_set_enabled_type) GetProcAddress(library, "grpc_tracer_set_enabled");
-  grpc_header_key_is_legal_import = (grpc_header_key_is_legal_type) GetProcAddress(library, "grpc_header_key_is_legal");
-  grpc_header_nonbin_value_is_legal_import = (grpc_header_nonbin_value_is_legal_type) GetProcAddress(library, "grpc_header_nonbin_value_is_legal");
-  grpc_is_binary_header_import = (grpc_is_binary_header_type) GetProcAddress(library, "grpc_is_binary_header");
-  grpc_call_error_to_string_import = (grpc_call_error_to_string_type) GetProcAddress(library, "grpc_call_error_to_string");
-  grpc_insecure_channel_create_from_fd_import = (grpc_insecure_channel_create_from_fd_type) GetProcAddress(library, "grpc_insecure_channel_create_from_fd");
-  grpc_server_add_insecure_channel_from_fd_import = (grpc_server_add_insecure_channel_from_fd_type) GetProcAddress(library, "grpc_server_add_insecure_channel_from_fd");
-  grpc_use_signal_import = (grpc_use_signal_type) GetProcAddress(library, "grpc_use_signal");
-  grpc_auth_property_iterator_next_import = (grpc_auth_property_iterator_next_type) GetProcAddress(library, "grpc_auth_property_iterator_next");
-  grpc_auth_context_property_iterator_import = (grpc_auth_context_property_iterator_type) GetProcAddress(library, "grpc_auth_context_property_iterator");
-  grpc_auth_context_peer_identity_import = (grpc_auth_context_peer_identity_type) GetProcAddress(library, "grpc_auth_context_peer_identity");
-  grpc_auth_context_find_properties_by_name_import = (grpc_auth_context_find_properties_by_name_type) GetProcAddress(library, "grpc_auth_context_find_properties_by_name");
-  grpc_auth_context_peer_identity_property_name_import = (grpc_auth_context_peer_identity_property_name_type) GetProcAddress(library, "grpc_auth_context_peer_identity_property_name");
-  grpc_auth_context_peer_is_authenticated_import = (grpc_auth_context_peer_is_authenticated_type) GetProcAddress(library, "grpc_auth_context_peer_is_authenticated");
-  grpc_call_auth_context_import = (grpc_call_auth_context_type) GetProcAddress(library, "grpc_call_auth_context");
-  grpc_auth_context_release_import = (grpc_auth_context_release_type) GetProcAddress(library, "grpc_auth_context_release");
-  grpc_auth_context_add_property_import = (grpc_auth_context_add_property_type) GetProcAddress(library, "grpc_auth_context_add_property");
-  grpc_auth_context_add_cstring_property_import = (grpc_auth_context_add_cstring_property_type) GetProcAddress(library, "grpc_auth_context_add_cstring_property");
-  grpc_auth_context_set_peer_identity_property_name_import = (grpc_auth_context_set_peer_identity_property_name_type) GetProcAddress(library, "grpc_auth_context_set_peer_identity_property_name");
-  grpc_channel_credentials_release_import = (grpc_channel_credentials_release_type) GetProcAddress(library, "grpc_channel_credentials_release");
-  grpc_google_default_credentials_create_import = (grpc_google_default_credentials_create_type) GetProcAddress(library, "grpc_google_default_credentials_create");
-  grpc_set_ssl_roots_override_callback_import = (grpc_set_ssl_roots_override_callback_type) GetProcAddress(library, "grpc_set_ssl_roots_override_callback");
-  grpc_ssl_credentials_create_import = (grpc_ssl_credentials_create_type) GetProcAddress(library, "grpc_ssl_credentials_create");
-  grpc_call_credentials_release_import = (grpc_call_credentials_release_type) GetProcAddress(library, "grpc_call_credentials_release");
-  grpc_composite_channel_credentials_create_import = (grpc_composite_channel_credentials_create_type) GetProcAddress(library, "grpc_composite_channel_credentials_create");
-  grpc_composite_call_credentials_create_import = (grpc_composite_call_credentials_create_type) GetProcAddress(library, "grpc_composite_call_credentials_create");
-  grpc_google_compute_engine_credentials_create_import = (grpc_google_compute_engine_credentials_create_type) GetProcAddress(library, "grpc_google_compute_engine_credentials_create");
-  grpc_max_auth_token_lifetime_import = (grpc_max_auth_token_lifetime_type) GetProcAddress(library, "grpc_max_auth_token_lifetime");
-  grpc_service_account_jwt_access_credentials_create_import = (grpc_service_account_jwt_access_credentials_create_type) GetProcAddress(library, "grpc_service_account_jwt_access_credentials_create");
-  grpc_google_refresh_token_credentials_create_import = (grpc_google_refresh_token_credentials_create_type) GetProcAddress(library, "grpc_google_refresh_token_credentials_create");
-  grpc_access_token_credentials_create_import = (grpc_access_token_credentials_create_type) GetProcAddress(library, "grpc_access_token_credentials_create");
-  grpc_google_iam_credentials_create_import = (grpc_google_iam_credentials_create_type) GetProcAddress(library, "grpc_google_iam_credentials_create");
-  grpc_metadata_credentials_create_from_plugin_import = (grpc_metadata_credentials_create_from_plugin_type) GetProcAddress(library, "grpc_metadata_credentials_create_from_plugin");
-  grpc_secure_channel_create_import = (grpc_secure_channel_create_type) GetProcAddress(library, "grpc_secure_channel_create");
-  grpc_server_credentials_release_import = (grpc_server_credentials_release_type) GetProcAddress(library, "grpc_server_credentials_release");
-  grpc_ssl_server_credentials_create_import = (grpc_ssl_server_credentials_create_type) GetProcAddress(library, "grpc_ssl_server_credentials_create");
-  grpc_ssl_server_credentials_create_ex_import = (grpc_ssl_server_credentials_create_ex_type) GetProcAddress(library, "grpc_ssl_server_credentials_create_ex");
-  grpc_server_add_secure_http2_port_import = (grpc_server_add_secure_http2_port_type) GetProcAddress(library, "grpc_server_add_secure_http2_port");
-  grpc_call_set_credentials_import = (grpc_call_set_credentials_type) GetProcAddress(library, "grpc_call_set_credentials");
-  grpc_server_credentials_set_auth_metadata_processor_import = (grpc_server_credentials_set_auth_metadata_processor_type) GetProcAddress(library, "grpc_server_credentials_set_auth_metadata_processor");
-  gpr_malloc_import = (gpr_malloc_type) GetProcAddress(library, "gpr_malloc");
-  gpr_free_import = (gpr_free_type) GetProcAddress(library, "gpr_free");
-  gpr_realloc_import = (gpr_realloc_type) GetProcAddress(library, "gpr_realloc");
-  gpr_malloc_aligned_import = (gpr_malloc_aligned_type) GetProcAddress(library, "gpr_malloc_aligned");
-  gpr_free_aligned_import = (gpr_free_aligned_type) GetProcAddress(library, "gpr_free_aligned");
-  gpr_set_allocation_functions_import = (gpr_set_allocation_functions_type) GetProcAddress(library, "gpr_set_allocation_functions");
-  gpr_get_allocation_functions_import = (gpr_get_allocation_functions_type) GetProcAddress(library, "gpr_get_allocation_functions");
-  grpc_raw_byte_buffer_create_import = (grpc_raw_byte_buffer_create_type) GetProcAddress(library, "grpc_raw_byte_buffer_create");
-  grpc_raw_compressed_byte_buffer_create_import = (grpc_raw_compressed_byte_buffer_create_type) GetProcAddress(library, "grpc_raw_compressed_byte_buffer_create");
-  grpc_byte_buffer_copy_import = (grpc_byte_buffer_copy_type) GetProcAddress(library, "grpc_byte_buffer_copy");
-  grpc_byte_buffer_length_import = (grpc_byte_buffer_length_type) GetProcAddress(library, "grpc_byte_buffer_length");
-  grpc_byte_buffer_destroy_import = (grpc_byte_buffer_destroy_type) GetProcAddress(library, "grpc_byte_buffer_destroy");
-  grpc_byte_buffer_reader_init_import = (grpc_byte_buffer_reader_init_type) GetProcAddress(library, "grpc_byte_buffer_reader_init");
-  grpc_byte_buffer_reader_destroy_import = (grpc_byte_buffer_reader_destroy_type) GetProcAddress(library, "grpc_byte_buffer_reader_destroy");
-  grpc_byte_buffer_reader_next_import = (grpc_byte_buffer_reader_next_type) GetProcAddress(library, "grpc_byte_buffer_reader_next");
-  grpc_byte_buffer_reader_readall_import = (grpc_byte_buffer_reader_readall_type) GetProcAddress(library, "grpc_byte_buffer_reader_readall");
-  grpc_raw_byte_buffer_from_reader_import = (grpc_raw_byte_buffer_from_reader_type) GetProcAddress(library, "grpc_raw_byte_buffer_from_reader");
-  gpr_log_import = (gpr_log_type) GetProcAddress(library, "gpr_log");
-  gpr_log_message_import = (gpr_log_message_type) GetProcAddress(library, "gpr_log_message");
-  gpr_set_log_verbosity_import = (gpr_set_log_verbosity_type) GetProcAddress(library, "gpr_set_log_verbosity");
-  gpr_log_verbosity_init_import = (gpr_log_verbosity_init_type) GetProcAddress(library, "gpr_log_verbosity_init");
-  gpr_set_log_function_import = (gpr_set_log_function_type) GetProcAddress(library, "gpr_set_log_function");
-  gpr_slice_ref_import = (gpr_slice_ref_type) GetProcAddress(library, "gpr_slice_ref");
-  gpr_slice_unref_import = (gpr_slice_unref_type) GetProcAddress(library, "gpr_slice_unref");
-  gpr_slice_new_import = (gpr_slice_new_type) GetProcAddress(library, "gpr_slice_new");
-  gpr_slice_new_with_len_import = (gpr_slice_new_with_len_type) GetProcAddress(library, "gpr_slice_new_with_len");
-  gpr_slice_malloc_import = (gpr_slice_malloc_type) GetProcAddress(library, "gpr_slice_malloc");
-  gpr_slice_from_copied_string_import = (gpr_slice_from_copied_string_type) GetProcAddress(library, "gpr_slice_from_copied_string");
-  gpr_slice_from_copied_buffer_import = (gpr_slice_from_copied_buffer_type) GetProcAddress(library, "gpr_slice_from_copied_buffer");
-  gpr_slice_from_static_string_import = (gpr_slice_from_static_string_type) GetProcAddress(library, "gpr_slice_from_static_string");
-  gpr_slice_sub_import = (gpr_slice_sub_type) GetProcAddress(library, "gpr_slice_sub");
-  gpr_slice_sub_no_ref_import = (gpr_slice_sub_no_ref_type) GetProcAddress(library, "gpr_slice_sub_no_ref");
-  gpr_slice_split_tail_import = (gpr_slice_split_tail_type) GetProcAddress(library, "gpr_slice_split_tail");
-  gpr_slice_split_head_import = (gpr_slice_split_head_type) GetProcAddress(library, "gpr_slice_split_head");
-  gpr_empty_slice_import = (gpr_empty_slice_type) GetProcAddress(library, "gpr_empty_slice");
-  gpr_slice_cmp_import = (gpr_slice_cmp_type) GetProcAddress(library, "gpr_slice_cmp");
-  gpr_slice_str_cmp_import = (gpr_slice_str_cmp_type) GetProcAddress(library, "gpr_slice_str_cmp");
-  gpr_slice_buffer_init_import = (gpr_slice_buffer_init_type) GetProcAddress(library, "gpr_slice_buffer_init");
-  gpr_slice_buffer_destroy_import = (gpr_slice_buffer_destroy_type) GetProcAddress(library, "gpr_slice_buffer_destroy");
-  gpr_slice_buffer_add_import = (gpr_slice_buffer_add_type) GetProcAddress(library, "gpr_slice_buffer_add");
-  gpr_slice_buffer_add_indexed_import = (gpr_slice_buffer_add_indexed_type) GetProcAddress(library, "gpr_slice_buffer_add_indexed");
-  gpr_slice_buffer_addn_import = (gpr_slice_buffer_addn_type) GetProcAddress(library, "gpr_slice_buffer_addn");
-  gpr_slice_buffer_tiny_add_import = (gpr_slice_buffer_tiny_add_type) GetProcAddress(library, "gpr_slice_buffer_tiny_add");
-  gpr_slice_buffer_pop_import = (gpr_slice_buffer_pop_type) GetProcAddress(library, "gpr_slice_buffer_pop");
-  gpr_slice_buffer_reset_and_unref_import = (gpr_slice_buffer_reset_and_unref_type) GetProcAddress(library, "gpr_slice_buffer_reset_and_unref");
-  gpr_slice_buffer_swap_import = (gpr_slice_buffer_swap_type) GetProcAddress(library, "gpr_slice_buffer_swap");
-  gpr_slice_buffer_move_into_import = (gpr_slice_buffer_move_into_type) GetProcAddress(library, "gpr_slice_buffer_move_into");
-  gpr_slice_buffer_trim_end_import = (gpr_slice_buffer_trim_end_type) GetProcAddress(library, "gpr_slice_buffer_trim_end");
-  gpr_slice_buffer_move_first_import = (gpr_slice_buffer_move_first_type) GetProcAddress(library, "gpr_slice_buffer_move_first");
-  gpr_slice_buffer_take_first_import = (gpr_slice_buffer_take_first_type) GetProcAddress(library, "gpr_slice_buffer_take_first");
-  gpr_mu_init_import = (gpr_mu_init_type) GetProcAddress(library, "gpr_mu_init");
-  gpr_mu_destroy_import = (gpr_mu_destroy_type) GetProcAddress(library, "gpr_mu_destroy");
-  gpr_mu_lock_import = (gpr_mu_lock_type) GetProcAddress(library, "gpr_mu_lock");
-  gpr_mu_unlock_import = (gpr_mu_unlock_type) GetProcAddress(library, "gpr_mu_unlock");
-  gpr_mu_trylock_import = (gpr_mu_trylock_type) GetProcAddress(library, "gpr_mu_trylock");
-  gpr_cv_init_import = (gpr_cv_init_type) GetProcAddress(library, "gpr_cv_init");
-  gpr_cv_destroy_import = (gpr_cv_destroy_type) GetProcAddress(library, "gpr_cv_destroy");
-  gpr_cv_wait_import = (gpr_cv_wait_type) GetProcAddress(library, "gpr_cv_wait");
-  gpr_cv_signal_import = (gpr_cv_signal_type) GetProcAddress(library, "gpr_cv_signal");
-  gpr_cv_broadcast_import = (gpr_cv_broadcast_type) GetProcAddress(library, "gpr_cv_broadcast");
-  gpr_once_init_import = (gpr_once_init_type) GetProcAddress(library, "gpr_once_init");
-  gpr_event_init_import = (gpr_event_init_type) GetProcAddress(library, "gpr_event_init");
-  gpr_event_set_import = (gpr_event_set_type) GetProcAddress(library, "gpr_event_set");
-  gpr_event_get_import = (gpr_event_get_type) GetProcAddress(library, "gpr_event_get");
-  gpr_event_wait_import = (gpr_event_wait_type) GetProcAddress(library, "gpr_event_wait");
-  gpr_ref_init_import = (gpr_ref_init_type) GetProcAddress(library, "gpr_ref_init");
-  gpr_ref_import = (gpr_ref_type) GetProcAddress(library, "gpr_ref");
-  gpr_ref_non_zero_import = (gpr_ref_non_zero_type) GetProcAddress(library, "gpr_ref_non_zero");
-  gpr_refn_import = (gpr_refn_type) GetProcAddress(library, "gpr_refn");
-  gpr_unref_import = (gpr_unref_type) GetProcAddress(library, "gpr_unref");
-  gpr_stats_init_import = (gpr_stats_init_type) GetProcAddress(library, "gpr_stats_init");
-  gpr_stats_inc_import = (gpr_stats_inc_type) GetProcAddress(library, "gpr_stats_inc");
-  gpr_stats_read_import = (gpr_stats_read_type) GetProcAddress(library, "gpr_stats_read");
-  gpr_time_0_import = (gpr_time_0_type) GetProcAddress(library, "gpr_time_0");
-  gpr_inf_future_import = (gpr_inf_future_type) GetProcAddress(library, "gpr_inf_future");
-  gpr_inf_past_import = (gpr_inf_past_type) GetProcAddress(library, "gpr_inf_past");
-  gpr_time_init_import = (gpr_time_init_type) GetProcAddress(library, "gpr_time_init");
-  gpr_now_import = (gpr_now_type) GetProcAddress(library, "gpr_now");
-  gpr_convert_clock_type_import = (gpr_convert_clock_type_type) GetProcAddress(library, "gpr_convert_clock_type");
-  gpr_time_cmp_import = (gpr_time_cmp_type) GetProcAddress(library, "gpr_time_cmp");
-  gpr_time_max_import = (gpr_time_max_type) GetProcAddress(library, "gpr_time_max");
-  gpr_time_min_import = (gpr_time_min_type) GetProcAddress(library, "gpr_time_min");
-  gpr_time_add_import = (gpr_time_add_type) GetProcAddress(library, "gpr_time_add");
-  gpr_time_sub_import = (gpr_time_sub_type) GetProcAddress(library, "gpr_time_sub");
-  gpr_time_from_micros_import = (gpr_time_from_micros_type) GetProcAddress(library, "gpr_time_from_micros");
-  gpr_time_from_nanos_import = (gpr_time_from_nanos_type) GetProcAddress(library, "gpr_time_from_nanos");
-  gpr_time_from_millis_import = (gpr_time_from_millis_type) GetProcAddress(library, "gpr_time_from_millis");
-  gpr_time_from_seconds_import = (gpr_time_from_seconds_type) GetProcAddress(library, "gpr_time_from_seconds");
-  gpr_time_from_minutes_import = (gpr_time_from_minutes_type) GetProcAddress(library, "gpr_time_from_minutes");
-  gpr_time_from_hours_import = (gpr_time_from_hours_type) GetProcAddress(library, "gpr_time_from_hours");
-  gpr_time_to_millis_import = (gpr_time_to_millis_type) GetProcAddress(library, "gpr_time_to_millis");
-  gpr_time_similar_import = (gpr_time_similar_type) GetProcAddress(library, "gpr_time_similar");
-  gpr_sleep_until_import = (gpr_sleep_until_type) GetProcAddress(library, "gpr_sleep_until");
-  gpr_timespec_to_micros_import = (gpr_timespec_to_micros_type) GetProcAddress(library, "gpr_timespec_to_micros");
-  gpr_avl_create_import = (gpr_avl_create_type) GetProcAddress(library, "gpr_avl_create");
-  gpr_avl_ref_import = (gpr_avl_ref_type) GetProcAddress(library, "gpr_avl_ref");
-  gpr_avl_unref_import = (gpr_avl_unref_type) GetProcAddress(library, "gpr_avl_unref");
-  gpr_avl_add_import = (gpr_avl_add_type) GetProcAddress(library, "gpr_avl_add");
-  gpr_avl_remove_import = (gpr_avl_remove_type) GetProcAddress(library, "gpr_avl_remove");
-  gpr_avl_get_import = (gpr_avl_get_type) GetProcAddress(library, "gpr_avl_get");
-  gpr_avl_maybe_get_import = (gpr_avl_maybe_get_type) GetProcAddress(library, "gpr_avl_maybe_get");
-  gpr_avl_is_empty_import = (gpr_avl_is_empty_type) GetProcAddress(library, "gpr_avl_is_empty");
-  gpr_cmdline_create_import = (gpr_cmdline_create_type) GetProcAddress(library, "gpr_cmdline_create");
-  gpr_cmdline_add_int_import = (gpr_cmdline_add_int_type) GetProcAddress(library, "gpr_cmdline_add_int");
-  gpr_cmdline_add_flag_import = (gpr_cmdline_add_flag_type) GetProcAddress(library, "gpr_cmdline_add_flag");
-  gpr_cmdline_add_string_import = (gpr_cmdline_add_string_type) GetProcAddress(library, "gpr_cmdline_add_string");
-  gpr_cmdline_on_extra_arg_import = (gpr_cmdline_on_extra_arg_type) GetProcAddress(library, "gpr_cmdline_on_extra_arg");
-  gpr_cmdline_set_survive_failure_import = (gpr_cmdline_set_survive_failure_type) GetProcAddress(library, "gpr_cmdline_set_survive_failure");
-  gpr_cmdline_parse_import = (gpr_cmdline_parse_type) GetProcAddress(library, "gpr_cmdline_parse");
-  gpr_cmdline_destroy_import = (gpr_cmdline_destroy_type) GetProcAddress(library, "gpr_cmdline_destroy");
-  gpr_cmdline_usage_string_import = (gpr_cmdline_usage_string_type) GetProcAddress(library, "gpr_cmdline_usage_string");
-  gpr_cpu_num_cores_import = (gpr_cpu_num_cores_type) GetProcAddress(library, "gpr_cpu_num_cores");
-  gpr_cpu_current_cpu_import = (gpr_cpu_current_cpu_type) GetProcAddress(library, "gpr_cpu_current_cpu");
-  gpr_histogram_create_import = (gpr_histogram_create_type) GetProcAddress(library, "gpr_histogram_create");
-  gpr_histogram_destroy_import = (gpr_histogram_destroy_type) GetProcAddress(library, "gpr_histogram_destroy");
-  gpr_histogram_add_import = (gpr_histogram_add_type) GetProcAddress(library, "gpr_histogram_add");
-  gpr_histogram_merge_import = (gpr_histogram_merge_type) GetProcAddress(library, "gpr_histogram_merge");
-  gpr_histogram_percentile_import = (gpr_histogram_percentile_type) GetProcAddress(library, "gpr_histogram_percentile");
-  gpr_histogram_mean_import = (gpr_histogram_mean_type) GetProcAddress(library, "gpr_histogram_mean");
-  gpr_histogram_stddev_import = (gpr_histogram_stddev_type) GetProcAddress(library, "gpr_histogram_stddev");
-  gpr_histogram_variance_import = (gpr_histogram_variance_type) GetProcAddress(library, "gpr_histogram_variance");
-  gpr_histogram_maximum_import = (gpr_histogram_maximum_type) GetProcAddress(library, "gpr_histogram_maximum");
-  gpr_histogram_minimum_import = (gpr_histogram_minimum_type) GetProcAddress(library, "gpr_histogram_minimum");
-  gpr_histogram_count_import = (gpr_histogram_count_type) GetProcAddress(library, "gpr_histogram_count");
-  gpr_histogram_sum_import = (gpr_histogram_sum_type) GetProcAddress(library, "gpr_histogram_sum");
-  gpr_histogram_sum_of_squares_import = (gpr_histogram_sum_of_squares_type) GetProcAddress(library, "gpr_histogram_sum_of_squares");
-  gpr_histogram_get_contents_import = (gpr_histogram_get_contents_type) GetProcAddress(library, "gpr_histogram_get_contents");
-  gpr_histogram_merge_contents_import = (gpr_histogram_merge_contents_type) GetProcAddress(library, "gpr_histogram_merge_contents");
-  gpr_join_host_port_import = (gpr_join_host_port_type) GetProcAddress(library, "gpr_join_host_port");
-  gpr_split_host_port_import = (gpr_split_host_port_type) GetProcAddress(library, "gpr_split_host_port");
-  gpr_format_message_import = (gpr_format_message_type) GetProcAddress(library, "gpr_format_message");
-  gpr_strdup_import = (gpr_strdup_type) GetProcAddress(library, "gpr_strdup");
-  gpr_asprintf_import = (gpr_asprintf_type) GetProcAddress(library, "gpr_asprintf");
-  gpr_subprocess_binary_extension_import = (gpr_subprocess_binary_extension_type) GetProcAddress(library, "gpr_subprocess_binary_extension");
-  gpr_subprocess_create_import = (gpr_subprocess_create_type) GetProcAddress(library, "gpr_subprocess_create");
-  gpr_subprocess_destroy_import = (gpr_subprocess_destroy_type) GetProcAddress(library, "gpr_subprocess_destroy");
-  gpr_subprocess_join_import = (gpr_subprocess_join_type) GetProcAddress(library, "gpr_subprocess_join");
-  gpr_subprocess_interrupt_import = (gpr_subprocess_interrupt_type) GetProcAddress(library, "gpr_subprocess_interrupt");
-  gpr_thd_new_import = (gpr_thd_new_type) GetProcAddress(library, "gpr_thd_new");
-  gpr_thd_options_default_import = (gpr_thd_options_default_type) GetProcAddress(library, "gpr_thd_options_default");
-  gpr_thd_options_set_detached_import = (gpr_thd_options_set_detached_type) GetProcAddress(library, "gpr_thd_options_set_detached");
-  gpr_thd_options_set_joinable_import = (gpr_thd_options_set_joinable_type) GetProcAddress(library, "gpr_thd_options_set_joinable");
-  gpr_thd_options_is_detached_import = (gpr_thd_options_is_detached_type) GetProcAddress(library, "gpr_thd_options_is_detached");
-  gpr_thd_options_is_joinable_import = (gpr_thd_options_is_joinable_type) GetProcAddress(library, "gpr_thd_options_is_joinable");
-  gpr_thd_currentid_import = (gpr_thd_currentid_type) GetProcAddress(library, "gpr_thd_currentid");
-  gpr_thd_join_import = (gpr_thd_join_type) GetProcAddress(library, "gpr_thd_join");
-}
-
-#ifdef __cplusplus
-}
-#endif  /* __cpluslus */
-
-#endif /* !GPR_WINDOWS */
diff --git a/src/python/grpcio/grpc/_cython/imports.generated.h b/src/python/grpcio/grpc/_cython/imports.generated.h
index f87c4da..8e5c9a8 100644
--- a/src/python/grpcio/grpc/_cython/imports.generated.h
+++ b/src/python/grpcio/grpc/_cython/imports.generated.h
@@ -31,860 +31,12 @@
  *
  */
 
+/* TODO(atash) remove cruft */
 #ifndef PYGRPC_CYTHON_WINDOWS_IMPORTS_H_
 #define PYGRPC_CYTHON_WINDOWS_IMPORTS_H_
 
 #include <grpc/support/port_platform.h>
 
-#ifdef GPR_WINDOWS
-
-#include <windows.h>
-
-#include <grpc/census.h>
-#include <grpc/compression.h>
-#include <grpc/grpc.h>
-#include <grpc/grpc_posix.h>
-#include <grpc/grpc_security.h>
-#include <grpc/impl/codegen/alloc.h>
-#include <grpc/impl/codegen/byte_buffer.h>
-#include <grpc/impl/codegen/log.h>
-#include <grpc/impl/codegen/slice.h>
-#include <grpc/impl/codegen/slice_buffer.h>
-#include <grpc/impl/codegen/sync.h>
-#include <grpc/impl/codegen/time.h>
-#include <grpc/support/avl.h>
-#include <grpc/support/cmdline.h>
-#include <grpc/support/cpu.h>
-#include <grpc/support/histogram.h>
-#include <grpc/support/host_port.h>
-#include <grpc/support/log_windows.h>
-#include <grpc/support/string_util.h>
-#include <grpc/support/subprocess.h>
-#include <grpc/support/thd.h>
-
-typedef int(*census_initialize_type)(int features);
-extern census_initialize_type census_initialize_import;
-#define census_initialize census_initialize_import
-typedef void(*census_shutdown_type)(void);
-extern census_shutdown_type census_shutdown_import;
-#define census_shutdown census_shutdown_import
-typedef int(*census_supported_type)(void);
-extern census_supported_type census_supported_import;
-#define census_supported census_supported_import
-typedef int(*census_enabled_type)(void);
-extern census_enabled_type census_enabled_import;
-#define census_enabled census_enabled_import
-typedef census_context *(*census_context_create_type)(const census_context *base, const census_tag *tags, int ntags, census_context_status const **status);
-extern census_context_create_type census_context_create_import;
-#define census_context_create census_context_create_import
-typedef void(*census_context_destroy_type)(census_context *context);
-extern census_context_destroy_type census_context_destroy_import;
-#define census_context_destroy census_context_destroy_import
-typedef const census_context_status *(*census_context_get_status_type)(const census_context *context);
-extern census_context_get_status_type census_context_get_status_import;
-#define census_context_get_status census_context_get_status_import
-typedef void(*census_context_initialize_iterator_type)(const census_context *context, census_context_iterator *iterator);
-extern census_context_initialize_iterator_type census_context_initialize_iterator_import;
-#define census_context_initialize_iterator census_context_initialize_iterator_import
-typedef int(*census_context_next_tag_type)(census_context_iterator *iterator, census_tag *tag);
-extern census_context_next_tag_type census_context_next_tag_import;
-#define census_context_next_tag census_context_next_tag_import
-typedef int(*census_context_get_tag_type)(const census_context *context, const char *key, census_tag *tag);
-extern census_context_get_tag_type census_context_get_tag_import;
-#define census_context_get_tag census_context_get_tag_import
-typedef size_t(*census_context_encode_type)(const census_context *context, char *buffer, size_t buf_size);
-extern census_context_encode_type census_context_encode_import;
-#define census_context_encode census_context_encode_import
-typedef census_context *(*census_context_decode_type)(const char *buffer, size_t size);
-extern census_context_decode_type census_context_decode_import;
-#define census_context_decode census_context_decode_import
-typedef int(*census_trace_mask_type)(const census_context *context);
-extern census_trace_mask_type census_trace_mask_import;
-#define census_trace_mask census_trace_mask_import
-typedef void(*census_set_trace_mask_type)(int trace_mask);
-extern census_set_trace_mask_type census_set_trace_mask_import;
-#define census_set_trace_mask census_set_trace_mask_import
-typedef census_timestamp(*census_start_rpc_op_timestamp_type)(void);
-extern census_start_rpc_op_timestamp_type census_start_rpc_op_timestamp_import;
-#define census_start_rpc_op_timestamp census_start_rpc_op_timestamp_import
-typedef census_context *(*census_start_client_rpc_op_type)(const census_context *context, int64_t rpc_name_id, const census_rpc_name_info *rpc_name_info, const char *peer, int trace_mask, const census_timestamp *start_time);
-extern census_start_client_rpc_op_type census_start_client_rpc_op_import;
-#define census_start_client_rpc_op census_start_client_rpc_op_import
-typedef void(*census_set_rpc_client_peer_type)(census_context *context, const char *peer);
-extern census_set_rpc_client_peer_type census_set_rpc_client_peer_import;
-#define census_set_rpc_client_peer census_set_rpc_client_peer_import
-typedef census_context *(*census_start_server_rpc_op_type)(const char *buffer, int64_t rpc_name_id, const census_rpc_name_info *rpc_name_info, const char *peer, int trace_mask, census_timestamp *start_time);
-extern census_start_server_rpc_op_type census_start_server_rpc_op_import;
-#define census_start_server_rpc_op census_start_server_rpc_op_import
-typedef census_context *(*census_start_op_type)(census_context *context, const char *family, const char *name, int trace_mask);
-extern census_start_op_type census_start_op_import;
-#define census_start_op census_start_op_import
-typedef void(*census_end_op_type)(census_context *context, int status);
-extern census_end_op_type census_end_op_import;
-#define census_end_op census_end_op_import
-typedef void(*census_trace_print_type)(census_context *context, uint32_t type, const char *buffer, size_t n);
-extern census_trace_print_type census_trace_print_import;
-#define census_trace_print census_trace_print_import
-typedef int(*census_trace_scan_start_type)(int consume);
-extern census_trace_scan_start_type census_trace_scan_start_import;
-#define census_trace_scan_start census_trace_scan_start_import
-typedef int(*census_get_trace_record_type)(census_trace_record *trace_record);
-extern census_get_trace_record_type census_get_trace_record_import;
-#define census_get_trace_record census_get_trace_record_import
-typedef void(*census_trace_scan_end_type)();
-extern census_trace_scan_end_type census_trace_scan_end_import;
-#define census_trace_scan_end census_trace_scan_end_import
-typedef void(*census_record_values_type)(census_context *context, census_value *values, size_t nvalues);
-extern census_record_values_type census_record_values_import;
-#define census_record_values census_record_values_import
-typedef census_view *(*census_view_create_type)(uint32_t metric_id, const census_context *tags, const census_aggregation *aggregations, size_t naggregations);
-extern census_view_create_type census_view_create_import;
-#define census_view_create census_view_create_import
-typedef void(*census_view_delete_type)(census_view *view);
-extern census_view_delete_type census_view_delete_import;
-#define census_view_delete census_view_delete_import
-typedef size_t(*census_view_metric_type)(const census_view *view);
-extern census_view_metric_type census_view_metric_import;
-#define census_view_metric census_view_metric_import
-typedef size_t(*census_view_naggregations_type)(const census_view *view);
-extern census_view_naggregations_type census_view_naggregations_import;
-#define census_view_naggregations census_view_naggregations_import
-typedef const census_context *(*census_view_tags_type)(const census_view *view);
-extern census_view_tags_type census_view_tags_import;
-#define census_view_tags census_view_tags_import
-typedef const census_aggregation *(*census_view_aggregrations_type)(const census_view *view);
-extern census_view_aggregrations_type census_view_aggregrations_import;
-#define census_view_aggregrations census_view_aggregrations_import
-typedef const census_view_data *(*census_view_get_data_type)(const census_view *view);
-extern census_view_get_data_type census_view_get_data_import;
-#define census_view_get_data census_view_get_data_import
-typedef void(*census_view_reset_type)(census_view *view);
-extern census_view_reset_type census_view_reset_import;
-#define census_view_reset census_view_reset_import
-typedef int(*grpc_compression_algorithm_parse_type)(const char *name, size_t name_length, grpc_compression_algorithm *algorithm);
-extern grpc_compression_algorithm_parse_type grpc_compression_algorithm_parse_import;
-#define grpc_compression_algorithm_parse grpc_compression_algorithm_parse_import
-typedef int(*grpc_compression_algorithm_name_type)(grpc_compression_algorithm algorithm, char **name);
-extern grpc_compression_algorithm_name_type grpc_compression_algorithm_name_import;
-#define grpc_compression_algorithm_name grpc_compression_algorithm_name_import
-typedef grpc_compression_algorithm(*grpc_compression_algorithm_for_level_type)(grpc_compression_level level, uint32_t accepted_encodings);
-extern grpc_compression_algorithm_for_level_type grpc_compression_algorithm_for_level_import;
-#define grpc_compression_algorithm_for_level grpc_compression_algorithm_for_level_import
-typedef void(*grpc_compression_options_init_type)(grpc_compression_options *opts);
-extern grpc_compression_options_init_type grpc_compression_options_init_import;
-#define grpc_compression_options_init grpc_compression_options_init_import
-typedef void(*grpc_compression_options_enable_algorithm_type)(grpc_compression_options *opts, grpc_compression_algorithm algorithm);
-extern grpc_compression_options_enable_algorithm_type grpc_compression_options_enable_algorithm_import;
-#define grpc_compression_options_enable_algorithm grpc_compression_options_enable_algorithm_import
-typedef void(*grpc_compression_options_disable_algorithm_type)(grpc_compression_options *opts, grpc_compression_algorithm algorithm);
-extern grpc_compression_options_disable_algorithm_type grpc_compression_options_disable_algorithm_import;
-#define grpc_compression_options_disable_algorithm grpc_compression_options_disable_algorithm_import
-typedef int(*grpc_compression_options_is_algorithm_enabled_type)(const grpc_compression_options *opts, grpc_compression_algorithm algorithm);
-extern grpc_compression_options_is_algorithm_enabled_type grpc_compression_options_is_algorithm_enabled_import;
-#define grpc_compression_options_is_algorithm_enabled grpc_compression_options_is_algorithm_enabled_import
-typedef void(*grpc_metadata_array_init_type)(grpc_metadata_array *array);
-extern grpc_metadata_array_init_type grpc_metadata_array_init_import;
-#define grpc_metadata_array_init grpc_metadata_array_init_import
-typedef void(*grpc_metadata_array_destroy_type)(grpc_metadata_array *array);
-extern grpc_metadata_array_destroy_type grpc_metadata_array_destroy_import;
-#define grpc_metadata_array_destroy grpc_metadata_array_destroy_import
-typedef void(*grpc_call_details_init_type)(grpc_call_details *details);
-extern grpc_call_details_init_type grpc_call_details_init_import;
-#define grpc_call_details_init grpc_call_details_init_import
-typedef void(*grpc_call_details_destroy_type)(grpc_call_details *details);
-extern grpc_call_details_destroy_type grpc_call_details_destroy_import;
-#define grpc_call_details_destroy grpc_call_details_destroy_import
-typedef void(*grpc_register_plugin_type)(void (*init)(void), void (*destroy)(void));
-extern grpc_register_plugin_type grpc_register_plugin_import;
-#define grpc_register_plugin grpc_register_plugin_import
-typedef void(*grpc_init_type)(void);
-extern grpc_init_type grpc_init_import;
-#define grpc_init grpc_init_import
-typedef void(*grpc_shutdown_type)(void);
-extern grpc_shutdown_type grpc_shutdown_import;
-#define grpc_shutdown grpc_shutdown_import
-typedef const char *(*grpc_version_string_type)(void);
-extern grpc_version_string_type grpc_version_string_import;
-#define grpc_version_string grpc_version_string_import
-typedef grpc_completion_queue *(*grpc_completion_queue_create_type)(void *reserved);
-extern grpc_completion_queue_create_type grpc_completion_queue_create_import;
-#define grpc_completion_queue_create grpc_completion_queue_create_import
-typedef grpc_event(*grpc_completion_queue_next_type)(grpc_completion_queue *cq, gpr_timespec deadline, void *reserved);
-extern grpc_completion_queue_next_type grpc_completion_queue_next_import;
-#define grpc_completion_queue_next grpc_completion_queue_next_import
-typedef grpc_event(*grpc_completion_queue_pluck_type)(grpc_completion_queue *cq, void *tag, gpr_timespec deadline, void *reserved);
-extern grpc_completion_queue_pluck_type grpc_completion_queue_pluck_import;
-#define grpc_completion_queue_pluck grpc_completion_queue_pluck_import
-typedef void(*grpc_completion_queue_shutdown_type)(grpc_completion_queue *cq);
-extern grpc_completion_queue_shutdown_type grpc_completion_queue_shutdown_import;
-#define grpc_completion_queue_shutdown grpc_completion_queue_shutdown_import
-typedef void(*grpc_completion_queue_destroy_type)(grpc_completion_queue *cq);
-extern grpc_completion_queue_destroy_type grpc_completion_queue_destroy_import;
-#define grpc_completion_queue_destroy grpc_completion_queue_destroy_import
-typedef grpc_alarm *(*grpc_alarm_create_type)(grpc_completion_queue *cq, gpr_timespec deadline, void *tag);
-extern grpc_alarm_create_type grpc_alarm_create_import;
-#define grpc_alarm_create grpc_alarm_create_import
-typedef void(*grpc_alarm_cancel_type)(grpc_alarm *alarm);
-extern grpc_alarm_cancel_type grpc_alarm_cancel_import;
-#define grpc_alarm_cancel grpc_alarm_cancel_import
-typedef void(*grpc_alarm_destroy_type)(grpc_alarm *alarm);
-extern grpc_alarm_destroy_type grpc_alarm_destroy_import;
-#define grpc_alarm_destroy grpc_alarm_destroy_import
-typedef grpc_connectivity_state(*grpc_channel_check_connectivity_state_type)(grpc_channel *channel, int try_to_connect);
-extern grpc_channel_check_connectivity_state_type grpc_channel_check_connectivity_state_import;
-#define grpc_channel_check_connectivity_state grpc_channel_check_connectivity_state_import
-typedef void(*grpc_channel_watch_connectivity_state_type)(grpc_channel *channel, grpc_connectivity_state last_observed_state, gpr_timespec deadline, grpc_completion_queue *cq, void *tag);
-extern grpc_channel_watch_connectivity_state_type grpc_channel_watch_connectivity_state_import;
-#define grpc_channel_watch_connectivity_state grpc_channel_watch_connectivity_state_import
-typedef grpc_call *(*grpc_channel_create_call_type)(grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask, grpc_completion_queue *completion_queue, const char *method, const char *host, gpr_timespec deadline, void *reserved);
-extern grpc_channel_create_call_type grpc_channel_create_call_import;
-#define grpc_channel_create_call grpc_channel_create_call_import
-typedef void(*grpc_channel_ping_type)(grpc_channel *channel, grpc_completion_queue *cq, void *tag, void *reserved);
-extern grpc_channel_ping_type grpc_channel_ping_import;
-#define grpc_channel_ping grpc_channel_ping_import
-typedef void *(*grpc_channel_register_call_type)(grpc_channel *channel, const char *method, const char *host, void *reserved);
-extern grpc_channel_register_call_type grpc_channel_register_call_import;
-#define grpc_channel_register_call grpc_channel_register_call_import
-typedef grpc_call *(*grpc_channel_create_registered_call_type)(grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask, grpc_completion_queue *completion_queue, void *registered_call_handle, gpr_timespec deadline, void *reserved);
-extern grpc_channel_create_registered_call_type grpc_channel_create_registered_call_import;
-#define grpc_channel_create_registered_call grpc_channel_create_registered_call_import
-typedef grpc_call_error(*grpc_call_start_batch_type)(grpc_call *call, const grpc_op *ops, size_t nops, void *tag, void *reserved);
-extern grpc_call_start_batch_type grpc_call_start_batch_import;
-#define grpc_call_start_batch grpc_call_start_batch_import
-typedef char *(*grpc_call_get_peer_type)(grpc_call *call);
-extern grpc_call_get_peer_type grpc_call_get_peer_import;
-#define grpc_call_get_peer grpc_call_get_peer_import
-typedef void(*grpc_census_call_set_context_type)(grpc_call *call, struct census_context *context);
-extern grpc_census_call_set_context_type grpc_census_call_set_context_import;
-#define grpc_census_call_set_context grpc_census_call_set_context_import
-typedef struct census_context *(*grpc_census_call_get_context_type)(grpc_call *call);
-extern grpc_census_call_get_context_type grpc_census_call_get_context_import;
-#define grpc_census_call_get_context grpc_census_call_get_context_import
-typedef char *(*grpc_channel_get_target_type)(grpc_channel *channel);
-extern grpc_channel_get_target_type grpc_channel_get_target_import;
-#define grpc_channel_get_target grpc_channel_get_target_import
-typedef grpc_channel *(*grpc_insecure_channel_create_type)(const char *target, const grpc_channel_args *args, void *reserved);
-extern grpc_insecure_channel_create_type grpc_insecure_channel_create_import;
-#define grpc_insecure_channel_create grpc_insecure_channel_create_import
-typedef grpc_channel *(*grpc_lame_client_channel_create_type)(const char *target, grpc_status_code error_code, const char *error_message);
-extern grpc_lame_client_channel_create_type grpc_lame_client_channel_create_import;
-#define grpc_lame_client_channel_create grpc_lame_client_channel_create_import
-typedef void(*grpc_channel_destroy_type)(grpc_channel *channel);
-extern grpc_channel_destroy_type grpc_channel_destroy_import;
-#define grpc_channel_destroy grpc_channel_destroy_import
-typedef grpc_call_error(*grpc_call_cancel_type)(grpc_call *call, void *reserved);
-extern grpc_call_cancel_type grpc_call_cancel_import;
-#define grpc_call_cancel grpc_call_cancel_import
-typedef grpc_call_error(*grpc_call_cancel_with_status_type)(grpc_call *call, grpc_status_code status, const char *description, void *reserved);
-extern grpc_call_cancel_with_status_type grpc_call_cancel_with_status_import;
-#define grpc_call_cancel_with_status grpc_call_cancel_with_status_import
-typedef void(*grpc_call_destroy_type)(grpc_call *call);
-extern grpc_call_destroy_type grpc_call_destroy_import;
-#define grpc_call_destroy grpc_call_destroy_import
-typedef grpc_call_error(*grpc_server_request_call_type)(grpc_server *server, grpc_call **call, grpc_call_details *details, grpc_metadata_array *request_metadata, grpc_completion_queue *cq_bound_to_call, grpc_completion_queue *cq_for_notification, void *tag_new);
-extern grpc_server_request_call_type grpc_server_request_call_import;
-#define grpc_server_request_call grpc_server_request_call_import
-typedef void *(*grpc_server_register_method_type)(grpc_server *server, const char *method, const char *host, grpc_server_register_method_payload_handling payload_handling, uint32_t flags);
-extern grpc_server_register_method_type grpc_server_register_method_import;
-#define grpc_server_register_method grpc_server_register_method_import
-typedef grpc_call_error(*grpc_server_request_registered_call_type)(grpc_server *server, void *registered_method, grpc_call **call, gpr_timespec *deadline, grpc_metadata_array *request_metadata, grpc_byte_buffer **optional_payload, grpc_completion_queue *cq_bound_to_call, grpc_completion_queue *cq_for_notification, void *tag_new);
-extern grpc_server_request_registered_call_type grpc_server_request_registered_call_import;
-#define grpc_server_request_registered_call grpc_server_request_registered_call_import
-typedef grpc_server *(*grpc_server_create_type)(const grpc_channel_args *args, void *reserved);
-extern grpc_server_create_type grpc_server_create_import;
-#define grpc_server_create grpc_server_create_import
-typedef void(*grpc_server_register_completion_queue_type)(grpc_server *server, grpc_completion_queue *cq, void *reserved);
-extern grpc_server_register_completion_queue_type grpc_server_register_completion_queue_import;
-#define grpc_server_register_completion_queue grpc_server_register_completion_queue_import
-typedef void(*grpc_server_register_non_listening_completion_queue_type)(grpc_server *server, grpc_completion_queue *q, void *reserved);
-extern grpc_server_register_non_listening_completion_queue_type grpc_server_register_non_listening_completion_queue_import;
-#define grpc_server_register_non_listening_completion_queue grpc_server_register_non_listening_completion_queue_import
-typedef int(*grpc_server_add_insecure_http2_port_type)(grpc_server *server, const char *addr);
-extern grpc_server_add_insecure_http2_port_type grpc_server_add_insecure_http2_port_import;
-#define grpc_server_add_insecure_http2_port grpc_server_add_insecure_http2_port_import
-typedef void(*grpc_server_start_type)(grpc_server *server);
-extern grpc_server_start_type grpc_server_start_import;
-#define grpc_server_start grpc_server_start_import
-typedef void(*grpc_server_shutdown_and_notify_type)(grpc_server *server, grpc_completion_queue *cq, void *tag);
-extern grpc_server_shutdown_and_notify_type grpc_server_shutdown_and_notify_import;
-#define grpc_server_shutdown_and_notify grpc_server_shutdown_and_notify_import
-typedef void(*grpc_server_cancel_all_calls_type)(grpc_server *server);
-extern grpc_server_cancel_all_calls_type grpc_server_cancel_all_calls_import;
-#define grpc_server_cancel_all_calls grpc_server_cancel_all_calls_import
-typedef void(*grpc_server_destroy_type)(grpc_server *server);
-extern grpc_server_destroy_type grpc_server_destroy_import;
-#define grpc_server_destroy grpc_server_destroy_import
-typedef int(*grpc_tracer_set_enabled_type)(const char *name, int enabled);
-extern grpc_tracer_set_enabled_type grpc_tracer_set_enabled_import;
-#define grpc_tracer_set_enabled grpc_tracer_set_enabled_import
-typedef int(*grpc_header_key_is_legal_type)(const char *key, size_t length);
-extern grpc_header_key_is_legal_type grpc_header_key_is_legal_import;
-#define grpc_header_key_is_legal grpc_header_key_is_legal_import
-typedef int(*grpc_header_nonbin_value_is_legal_type)(const char *value, size_t length);
-extern grpc_header_nonbin_value_is_legal_type grpc_header_nonbin_value_is_legal_import;
-#define grpc_header_nonbin_value_is_legal grpc_header_nonbin_value_is_legal_import
-typedef int(*grpc_is_binary_header_type)(const char *key, size_t length);
-extern grpc_is_binary_header_type grpc_is_binary_header_import;
-#define grpc_is_binary_header grpc_is_binary_header_import
-typedef const char *(*grpc_call_error_to_string_type)(grpc_call_error error);
-extern grpc_call_error_to_string_type grpc_call_error_to_string_import;
-#define grpc_call_error_to_string grpc_call_error_to_string_import
-typedef grpc_channel *(*grpc_insecure_channel_create_from_fd_type)(const char *target, int fd, const grpc_channel_args *args);
-extern grpc_insecure_channel_create_from_fd_type grpc_insecure_channel_create_from_fd_import;
-#define grpc_insecure_channel_create_from_fd grpc_insecure_channel_create_from_fd_import
-typedef void(*grpc_server_add_insecure_channel_from_fd_type)(grpc_server *server, grpc_completion_queue *cq, int fd);
-extern grpc_server_add_insecure_channel_from_fd_type grpc_server_add_insecure_channel_from_fd_import;
-#define grpc_server_add_insecure_channel_from_fd grpc_server_add_insecure_channel_from_fd_import
-typedef void(*grpc_use_signal_type)(int signum);
-extern grpc_use_signal_type grpc_use_signal_import;
-#define grpc_use_signal grpc_use_signal_import
-typedef const grpc_auth_property *(*grpc_auth_property_iterator_next_type)(grpc_auth_property_iterator *it);
-extern grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
-#define grpc_auth_property_iterator_next grpc_auth_property_iterator_next_import
-typedef grpc_auth_property_iterator(*grpc_auth_context_property_iterator_type)(const grpc_auth_context *ctx);
-extern grpc_auth_context_property_iterator_type grpc_auth_context_property_iterator_import;
-#define grpc_auth_context_property_iterator grpc_auth_context_property_iterator_import
-typedef grpc_auth_property_iterator(*grpc_auth_context_peer_identity_type)(const grpc_auth_context *ctx);
-extern grpc_auth_context_peer_identity_type grpc_auth_context_peer_identity_import;
-#define grpc_auth_context_peer_identity grpc_auth_context_peer_identity_import
-typedef grpc_auth_property_iterator(*grpc_auth_context_find_properties_by_name_type)(const grpc_auth_context *ctx, const char *name);
-extern grpc_auth_context_find_properties_by_name_type grpc_auth_context_find_properties_by_name_import;
-#define grpc_auth_context_find_properties_by_name grpc_auth_context_find_properties_by_name_import
-typedef const char *(*grpc_auth_context_peer_identity_property_name_type)(const grpc_auth_context *ctx);
-extern grpc_auth_context_peer_identity_property_name_type grpc_auth_context_peer_identity_property_name_import;
-#define grpc_auth_context_peer_identity_property_name grpc_auth_context_peer_identity_property_name_import
-typedef int(*grpc_auth_context_peer_is_authenticated_type)(const grpc_auth_context *ctx);
-extern grpc_auth_context_peer_is_authenticated_type grpc_auth_context_peer_is_authenticated_import;
-#define grpc_auth_context_peer_is_authenticated grpc_auth_context_peer_is_authenticated_import
-typedef grpc_auth_context *(*grpc_call_auth_context_type)(grpc_call *call);
-extern grpc_call_auth_context_type grpc_call_auth_context_import;
-#define grpc_call_auth_context grpc_call_auth_context_import
-typedef void(*grpc_auth_context_release_type)(grpc_auth_context *context);
-extern grpc_auth_context_release_type grpc_auth_context_release_import;
-#define grpc_auth_context_release grpc_auth_context_release_import
-typedef void(*grpc_auth_context_add_property_type)(grpc_auth_context *ctx, const char *name, const char *value, size_t value_length);
-extern grpc_auth_context_add_property_type grpc_auth_context_add_property_import;
-#define grpc_auth_context_add_property grpc_auth_context_add_property_import
-typedef void(*grpc_auth_context_add_cstring_property_type)(grpc_auth_context *ctx, const char *name, const char *value);
-extern grpc_auth_context_add_cstring_property_type grpc_auth_context_add_cstring_property_import;
-#define grpc_auth_context_add_cstring_property grpc_auth_context_add_cstring_property_import
-typedef int(*grpc_auth_context_set_peer_identity_property_name_type)(grpc_auth_context *ctx, const char *name);
-extern grpc_auth_context_set_peer_identity_property_name_type grpc_auth_context_set_peer_identity_property_name_import;
-#define grpc_auth_context_set_peer_identity_property_name grpc_auth_context_set_peer_identity_property_name_import
-typedef void(*grpc_channel_credentials_release_type)(grpc_channel_credentials *creds);
-extern grpc_channel_credentials_release_type grpc_channel_credentials_release_import;
-#define grpc_channel_credentials_release grpc_channel_credentials_release_import
-typedef grpc_channel_credentials *(*grpc_google_default_credentials_create_type)(void);
-extern grpc_google_default_credentials_create_type grpc_google_default_credentials_create_import;
-#define grpc_google_default_credentials_create grpc_google_default_credentials_create_import
-typedef void(*grpc_set_ssl_roots_override_callback_type)(grpc_ssl_roots_override_callback cb);
-extern grpc_set_ssl_roots_override_callback_type grpc_set_ssl_roots_override_callback_import;
-#define grpc_set_ssl_roots_override_callback grpc_set_ssl_roots_override_callback_import
-typedef grpc_channel_credentials *(*grpc_ssl_credentials_create_type)(const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pair, void *reserved);
-extern grpc_ssl_credentials_create_type grpc_ssl_credentials_create_import;
-#define grpc_ssl_credentials_create grpc_ssl_credentials_create_import
-typedef void(*grpc_call_credentials_release_type)(grpc_call_credentials *creds);
-extern grpc_call_credentials_release_type grpc_call_credentials_release_import;
-#define grpc_call_credentials_release grpc_call_credentials_release_import
-typedef grpc_channel_credentials *(*grpc_composite_channel_credentials_create_type)(grpc_channel_credentials *channel_creds, grpc_call_credentials *call_creds, void *reserved);
-extern grpc_composite_channel_credentials_create_type grpc_composite_channel_credentials_create_import;
-#define grpc_composite_channel_credentials_create grpc_composite_channel_credentials_create_import
-typedef grpc_call_credentials *(*grpc_composite_call_credentials_create_type)(grpc_call_credentials *creds1, grpc_call_credentials *creds2, void *reserved);
-extern grpc_composite_call_credentials_create_type grpc_composite_call_credentials_create_import;
-#define grpc_composite_call_credentials_create grpc_composite_call_credentials_create_import
-typedef grpc_call_credentials *(*grpc_google_compute_engine_credentials_create_type)(void *reserved);
-extern grpc_google_compute_engine_credentials_create_type grpc_google_compute_engine_credentials_create_import;
-#define grpc_google_compute_engine_credentials_create grpc_google_compute_engine_credentials_create_import
-typedef gpr_timespec(*grpc_max_auth_token_lifetime_type)();
-extern grpc_max_auth_token_lifetime_type grpc_max_auth_token_lifetime_import;
-#define grpc_max_auth_token_lifetime grpc_max_auth_token_lifetime_import
-typedef grpc_call_credentials *(*grpc_service_account_jwt_access_credentials_create_type)(const char *json_key, gpr_timespec token_lifetime, void *reserved);
-extern grpc_service_account_jwt_access_credentials_create_type grpc_service_account_jwt_access_credentials_create_import;
-#define grpc_service_account_jwt_access_credentials_create grpc_service_account_jwt_access_credentials_create_import
-typedef grpc_call_credentials *(*grpc_google_refresh_token_credentials_create_type)(const char *json_refresh_token, void *reserved);
-extern grpc_google_refresh_token_credentials_create_type grpc_google_refresh_token_credentials_create_import;
-#define grpc_google_refresh_token_credentials_create grpc_google_refresh_token_credentials_create_import
-typedef grpc_call_credentials *(*grpc_access_token_credentials_create_type)(const char *access_token, void *reserved);
-extern grpc_access_token_credentials_create_type grpc_access_token_credentials_create_import;
-#define grpc_access_token_credentials_create grpc_access_token_credentials_create_import
-typedef grpc_call_credentials *(*grpc_google_iam_credentials_create_type)(const char *authorization_token, const char *authority_selector, void *reserved);
-extern grpc_google_iam_credentials_create_type grpc_google_iam_credentials_create_import;
-#define grpc_google_iam_credentials_create grpc_google_iam_credentials_create_import
-typedef grpc_call_credentials *(*grpc_metadata_credentials_create_from_plugin_type)(grpc_metadata_credentials_plugin plugin, void *reserved);
-extern grpc_metadata_credentials_create_from_plugin_type grpc_metadata_credentials_create_from_plugin_import;
-#define grpc_metadata_credentials_create_from_plugin grpc_metadata_credentials_create_from_plugin_import
-typedef grpc_channel *(*grpc_secure_channel_create_type)(grpc_channel_credentials *creds, const char *target, const grpc_channel_args *args, void *reserved);
-extern grpc_secure_channel_create_type grpc_secure_channel_create_import;
-#define grpc_secure_channel_create grpc_secure_channel_create_import
-typedef void(*grpc_server_credentials_release_type)(grpc_server_credentials *creds);
-extern grpc_server_credentials_release_type grpc_server_credentials_release_import;
-#define grpc_server_credentials_release grpc_server_credentials_release_import
-typedef grpc_server_credentials *(*grpc_ssl_server_credentials_create_type)(const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs, size_t num_key_cert_pairs, int force_client_auth, void *reserved);
-extern grpc_ssl_server_credentials_create_type grpc_ssl_server_credentials_create_import;
-#define grpc_ssl_server_credentials_create grpc_ssl_server_credentials_create_import
-typedef grpc_server_credentials *(*grpc_ssl_server_credentials_create_ex_type)(const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs, size_t num_key_cert_pairs, grpc_ssl_client_certificate_request_type client_certificate_request, void *reserved);
-extern grpc_ssl_server_credentials_create_ex_type grpc_ssl_server_credentials_create_ex_import;
-#define grpc_ssl_server_credentials_create_ex grpc_ssl_server_credentials_create_ex_import
-typedef int(*grpc_server_add_secure_http2_port_type)(grpc_server *server, const char *addr, grpc_server_credentials *creds);
-extern grpc_server_add_secure_http2_port_type grpc_server_add_secure_http2_port_import;
-#define grpc_server_add_secure_http2_port grpc_server_add_secure_http2_port_import
-typedef grpc_call_error(*grpc_call_set_credentials_type)(grpc_call *call, grpc_call_credentials *creds);
-extern grpc_call_set_credentials_type grpc_call_set_credentials_import;
-#define grpc_call_set_credentials grpc_call_set_credentials_import
-typedef void(*grpc_server_credentials_set_auth_metadata_processor_type)(grpc_server_credentials *creds, grpc_auth_metadata_processor processor);
-extern grpc_server_credentials_set_auth_metadata_processor_type grpc_server_credentials_set_auth_metadata_processor_import;
-#define grpc_server_credentials_set_auth_metadata_processor grpc_server_credentials_set_auth_metadata_processor_import
-typedef void *(*gpr_malloc_type)(size_t size);
-extern gpr_malloc_type gpr_malloc_import;
-#define gpr_malloc gpr_malloc_import
-typedef void(*gpr_free_type)(void *ptr);
-extern gpr_free_type gpr_free_import;
-#define gpr_free gpr_free_import
-typedef void *(*gpr_realloc_type)(void *p, size_t size);
-extern gpr_realloc_type gpr_realloc_import;
-#define gpr_realloc gpr_realloc_import
-typedef void *(*gpr_malloc_aligned_type)(size_t size, size_t alignment_log);
-extern gpr_malloc_aligned_type gpr_malloc_aligned_import;
-#define gpr_malloc_aligned gpr_malloc_aligned_import
-typedef void(*gpr_free_aligned_type)(void *ptr);
-extern gpr_free_aligned_type gpr_free_aligned_import;
-#define gpr_free_aligned gpr_free_aligned_import
-typedef void(*gpr_set_allocation_functions_type)(gpr_allocation_functions functions);
-extern gpr_set_allocation_functions_type gpr_set_allocation_functions_import;
-#define gpr_set_allocation_functions gpr_set_allocation_functions_import
-typedef gpr_allocation_functions(*gpr_get_allocation_functions_type)();
-extern gpr_get_allocation_functions_type gpr_get_allocation_functions_import;
-#define gpr_get_allocation_functions gpr_get_allocation_functions_import
-typedef grpc_byte_buffer *(*grpc_raw_byte_buffer_create_type)(gpr_slice *slices, size_t nslices);
-extern grpc_raw_byte_buffer_create_type grpc_raw_byte_buffer_create_import;
-#define grpc_raw_byte_buffer_create grpc_raw_byte_buffer_create_import
-typedef grpc_byte_buffer *(*grpc_raw_compressed_byte_buffer_create_type)(gpr_slice *slices, size_t nslices, grpc_compression_algorithm compression);
-extern grpc_raw_compressed_byte_buffer_create_type grpc_raw_compressed_byte_buffer_create_import;
-#define grpc_raw_compressed_byte_buffer_create grpc_raw_compressed_byte_buffer_create_import
-typedef grpc_byte_buffer *(*grpc_byte_buffer_copy_type)(grpc_byte_buffer *bb);
-extern grpc_byte_buffer_copy_type grpc_byte_buffer_copy_import;
-#define grpc_byte_buffer_copy grpc_byte_buffer_copy_import
-typedef size_t(*grpc_byte_buffer_length_type)(grpc_byte_buffer *bb);
-extern grpc_byte_buffer_length_type grpc_byte_buffer_length_import;
-#define grpc_byte_buffer_length grpc_byte_buffer_length_import
-typedef void(*grpc_byte_buffer_destroy_type)(grpc_byte_buffer *byte_buffer);
-extern grpc_byte_buffer_destroy_type grpc_byte_buffer_destroy_import;
-#define grpc_byte_buffer_destroy grpc_byte_buffer_destroy_import
-typedef int(*grpc_byte_buffer_reader_init_type)(grpc_byte_buffer_reader *reader, grpc_byte_buffer *buffer);
-extern grpc_byte_buffer_reader_init_type grpc_byte_buffer_reader_init_import;
-#define grpc_byte_buffer_reader_init grpc_byte_buffer_reader_init_import
-typedef void(*grpc_byte_buffer_reader_destroy_type)(grpc_byte_buffer_reader *reader);
-extern grpc_byte_buffer_reader_destroy_type grpc_byte_buffer_reader_destroy_import;
-#define grpc_byte_buffer_reader_destroy grpc_byte_buffer_reader_destroy_import
-typedef int(*grpc_byte_buffer_reader_next_type)(grpc_byte_buffer_reader *reader, gpr_slice *slice);
-extern grpc_byte_buffer_reader_next_type grpc_byte_buffer_reader_next_import;
-#define grpc_byte_buffer_reader_next grpc_byte_buffer_reader_next_import
-typedef gpr_slice(*grpc_byte_buffer_reader_readall_type)(grpc_byte_buffer_reader *reader);
-extern grpc_byte_buffer_reader_readall_type grpc_byte_buffer_reader_readall_import;
-#define grpc_byte_buffer_reader_readall grpc_byte_buffer_reader_readall_import
-typedef grpc_byte_buffer *(*grpc_raw_byte_buffer_from_reader_type)(grpc_byte_buffer_reader *reader);
-extern grpc_raw_byte_buffer_from_reader_type grpc_raw_byte_buffer_from_reader_import;
-#define grpc_raw_byte_buffer_from_reader grpc_raw_byte_buffer_from_reader_import
-typedef void(*gpr_log_type)(const char *file, int line, gpr_log_severity severity, const char *format, ...) GPRC_PRINT_FORMAT_CHECK(4, 5);
-extern gpr_log_type gpr_log_import;
-#define gpr_log gpr_log_import
-typedef void(*gpr_log_message_type)(const char *file, int line, gpr_log_severity severity, const char *message);
-extern gpr_log_message_type gpr_log_message_import;
-#define gpr_log_message gpr_log_message_import
-typedef void(*gpr_set_log_verbosity_type)(gpr_log_severity min_severity_to_print);
-extern gpr_set_log_verbosity_type gpr_set_log_verbosity_import;
-#define gpr_set_log_verbosity gpr_set_log_verbosity_import
-typedef void(*gpr_log_verbosity_init_type)();
-extern gpr_log_verbosity_init_type gpr_log_verbosity_init_import;
-#define gpr_log_verbosity_init gpr_log_verbosity_init_import
-typedef void(*gpr_set_log_function_type)(gpr_log_func func);
-extern gpr_set_log_function_type gpr_set_log_function_import;
-#define gpr_set_log_function gpr_set_log_function_import
-typedef gpr_slice(*gpr_slice_ref_type)(gpr_slice s);
-extern gpr_slice_ref_type gpr_slice_ref_import;
-#define gpr_slice_ref gpr_slice_ref_import
-typedef void(*gpr_slice_unref_type)(gpr_slice s);
-extern gpr_slice_unref_type gpr_slice_unref_import;
-#define gpr_slice_unref gpr_slice_unref_import
-typedef gpr_slice(*gpr_slice_new_type)(void *p, size_t len, void (*destroy)(void *));
-extern gpr_slice_new_type gpr_slice_new_import;
-#define gpr_slice_new gpr_slice_new_import
-typedef gpr_slice(*gpr_slice_new_with_len_type)(void *p, size_t len, void (*destroy)(void *, size_t));
-extern gpr_slice_new_with_len_type gpr_slice_new_with_len_import;
-#define gpr_slice_new_with_len gpr_slice_new_with_len_import
-typedef gpr_slice(*gpr_slice_malloc_type)(size_t length);
-extern gpr_slice_malloc_type gpr_slice_malloc_import;
-#define gpr_slice_malloc gpr_slice_malloc_import
-typedef gpr_slice(*gpr_slice_from_copied_string_type)(const char *source);
-extern gpr_slice_from_copied_string_type gpr_slice_from_copied_string_import;
-#define gpr_slice_from_copied_string gpr_slice_from_copied_string_import
-typedef gpr_slice(*gpr_slice_from_copied_buffer_type)(const char *source, size_t len);
-extern gpr_slice_from_copied_buffer_type gpr_slice_from_copied_buffer_import;
-#define gpr_slice_from_copied_buffer gpr_slice_from_copied_buffer_import
-typedef gpr_slice(*gpr_slice_from_static_string_type)(const char *source);
-extern gpr_slice_from_static_string_type gpr_slice_from_static_string_import;
-#define gpr_slice_from_static_string gpr_slice_from_static_string_import
-typedef gpr_slice(*gpr_slice_sub_type)(gpr_slice s, size_t begin, size_t end);
-extern gpr_slice_sub_type gpr_slice_sub_import;
-#define gpr_slice_sub gpr_slice_sub_import
-typedef gpr_slice(*gpr_slice_sub_no_ref_type)(gpr_slice s, size_t begin, size_t end);
-extern gpr_slice_sub_no_ref_type gpr_slice_sub_no_ref_import;
-#define gpr_slice_sub_no_ref gpr_slice_sub_no_ref_import
-typedef gpr_slice(*gpr_slice_split_tail_type)(gpr_slice *s, size_t split);
-extern gpr_slice_split_tail_type gpr_slice_split_tail_import;
-#define gpr_slice_split_tail gpr_slice_split_tail_import
-typedef gpr_slice(*gpr_slice_split_head_type)(gpr_slice *s, size_t split);
-extern gpr_slice_split_head_type gpr_slice_split_head_import;
-#define gpr_slice_split_head gpr_slice_split_head_import
-typedef gpr_slice(*gpr_empty_slice_type)(void);
-extern gpr_empty_slice_type gpr_empty_slice_import;
-#define gpr_empty_slice gpr_empty_slice_import
-typedef int(*gpr_slice_cmp_type)(gpr_slice a, gpr_slice b);
-extern gpr_slice_cmp_type gpr_slice_cmp_import;
-#define gpr_slice_cmp gpr_slice_cmp_import
-typedef int(*gpr_slice_str_cmp_type)(gpr_slice a, const char *b);
-extern gpr_slice_str_cmp_type gpr_slice_str_cmp_import;
-#define gpr_slice_str_cmp gpr_slice_str_cmp_import
-typedef void(*gpr_slice_buffer_init_type)(gpr_slice_buffer *sb);
-extern gpr_slice_buffer_init_type gpr_slice_buffer_init_import;
-#define gpr_slice_buffer_init gpr_slice_buffer_init_import
-typedef void(*gpr_slice_buffer_destroy_type)(gpr_slice_buffer *sb);
-extern gpr_slice_buffer_destroy_type gpr_slice_buffer_destroy_import;
-#define gpr_slice_buffer_destroy gpr_slice_buffer_destroy_import
-typedef void(*gpr_slice_buffer_add_type)(gpr_slice_buffer *sb, gpr_slice slice);
-extern gpr_slice_buffer_add_type gpr_slice_buffer_add_import;
-#define gpr_slice_buffer_add gpr_slice_buffer_add_import
-typedef size_t(*gpr_slice_buffer_add_indexed_type)(gpr_slice_buffer *sb, gpr_slice slice);
-extern gpr_slice_buffer_add_indexed_type gpr_slice_buffer_add_indexed_import;
-#define gpr_slice_buffer_add_indexed gpr_slice_buffer_add_indexed_import
-typedef void(*gpr_slice_buffer_addn_type)(gpr_slice_buffer *sb, gpr_slice *slices, size_t n);
-extern gpr_slice_buffer_addn_type gpr_slice_buffer_addn_import;
-#define gpr_slice_buffer_addn gpr_slice_buffer_addn_import
-typedef uint8_t *(*gpr_slice_buffer_tiny_add_type)(gpr_slice_buffer *sb, size_t len);
-extern gpr_slice_buffer_tiny_add_type gpr_slice_buffer_tiny_add_import;
-#define gpr_slice_buffer_tiny_add gpr_slice_buffer_tiny_add_import
-typedef void(*gpr_slice_buffer_pop_type)(gpr_slice_buffer *sb);
-extern gpr_slice_buffer_pop_type gpr_slice_buffer_pop_import;
-#define gpr_slice_buffer_pop gpr_slice_buffer_pop_import
-typedef void(*gpr_slice_buffer_reset_and_unref_type)(gpr_slice_buffer *sb);
-extern gpr_slice_buffer_reset_and_unref_type gpr_slice_buffer_reset_and_unref_import;
-#define gpr_slice_buffer_reset_and_unref gpr_slice_buffer_reset_and_unref_import
-typedef void(*gpr_slice_buffer_swap_type)(gpr_slice_buffer *a, gpr_slice_buffer *b);
-extern gpr_slice_buffer_swap_type gpr_slice_buffer_swap_import;
-#define gpr_slice_buffer_swap gpr_slice_buffer_swap_import
-typedef void(*gpr_slice_buffer_move_into_type)(gpr_slice_buffer *src, gpr_slice_buffer *dst);
-extern gpr_slice_buffer_move_into_type gpr_slice_buffer_move_into_import;
-#define gpr_slice_buffer_move_into gpr_slice_buffer_move_into_import
-typedef void(*gpr_slice_buffer_trim_end_type)(gpr_slice_buffer *src, size_t n, gpr_slice_buffer *garbage);
-extern gpr_slice_buffer_trim_end_type gpr_slice_buffer_trim_end_import;
-#define gpr_slice_buffer_trim_end gpr_slice_buffer_trim_end_import
-typedef void(*gpr_slice_buffer_move_first_type)(gpr_slice_buffer *src, size_t n, gpr_slice_buffer *dst);
-extern gpr_slice_buffer_move_first_type gpr_slice_buffer_move_first_import;
-#define gpr_slice_buffer_move_first gpr_slice_buffer_move_first_import
-typedef gpr_slice(*gpr_slice_buffer_take_first_type)(gpr_slice_buffer *src);
-extern gpr_slice_buffer_take_first_type gpr_slice_buffer_take_first_import;
-#define gpr_slice_buffer_take_first gpr_slice_buffer_take_first_import
-typedef void(*gpr_mu_init_type)(gpr_mu *mu);
-extern gpr_mu_init_type gpr_mu_init_import;
-#define gpr_mu_init gpr_mu_init_import
-typedef void(*gpr_mu_destroy_type)(gpr_mu *mu);
-extern gpr_mu_destroy_type gpr_mu_destroy_import;
-#define gpr_mu_destroy gpr_mu_destroy_import
-typedef void(*gpr_mu_lock_type)(gpr_mu *mu);
-extern gpr_mu_lock_type gpr_mu_lock_import;
-#define gpr_mu_lock gpr_mu_lock_import
-typedef void(*gpr_mu_unlock_type)(gpr_mu *mu);
-extern gpr_mu_unlock_type gpr_mu_unlock_import;
-#define gpr_mu_unlock gpr_mu_unlock_import
-typedef int(*gpr_mu_trylock_type)(gpr_mu *mu);
-extern gpr_mu_trylock_type gpr_mu_trylock_import;
-#define gpr_mu_trylock gpr_mu_trylock_import
-typedef void(*gpr_cv_init_type)(gpr_cv *cv);
-extern gpr_cv_init_type gpr_cv_init_import;
-#define gpr_cv_init gpr_cv_init_import
-typedef void(*gpr_cv_destroy_type)(gpr_cv *cv);
-extern gpr_cv_destroy_type gpr_cv_destroy_import;
-#define gpr_cv_destroy gpr_cv_destroy_import
-typedef int(*gpr_cv_wait_type)(gpr_cv *cv, gpr_mu *mu, gpr_timespec abs_deadline);
-extern gpr_cv_wait_type gpr_cv_wait_import;
-#define gpr_cv_wait gpr_cv_wait_import
-typedef void(*gpr_cv_signal_type)(gpr_cv *cv);
-extern gpr_cv_signal_type gpr_cv_signal_import;
-#define gpr_cv_signal gpr_cv_signal_import
-typedef void(*gpr_cv_broadcast_type)(gpr_cv *cv);
-extern gpr_cv_broadcast_type gpr_cv_broadcast_import;
-#define gpr_cv_broadcast gpr_cv_broadcast_import
-typedef void(*gpr_once_init_type)(gpr_once *once, void (*init_routine)(void));
-extern gpr_once_init_type gpr_once_init_import;
-#define gpr_once_init gpr_once_init_import
-typedef void(*gpr_event_init_type)(gpr_event *ev);
-extern gpr_event_init_type gpr_event_init_import;
-#define gpr_event_init gpr_event_init_import
-typedef void(*gpr_event_set_type)(gpr_event *ev, void *value);
-extern gpr_event_set_type gpr_event_set_import;
-#define gpr_event_set gpr_event_set_import
-typedef void *(*gpr_event_get_type)(gpr_event *ev);
-extern gpr_event_get_type gpr_event_get_import;
-#define gpr_event_get gpr_event_get_import
-typedef void *(*gpr_event_wait_type)(gpr_event *ev, gpr_timespec abs_deadline);
-extern gpr_event_wait_type gpr_event_wait_import;
-#define gpr_event_wait gpr_event_wait_import
-typedef void(*gpr_ref_init_type)(gpr_refcount *r, int n);
-extern gpr_ref_init_type gpr_ref_init_import;
-#define gpr_ref_init gpr_ref_init_import
-typedef void(*gpr_ref_type)(gpr_refcount *r);
-extern gpr_ref_type gpr_ref_import;
-#define gpr_ref gpr_ref_import
-typedef void(*gpr_ref_non_zero_type)(gpr_refcount *r);
-extern gpr_ref_non_zero_type gpr_ref_non_zero_import;
-#define gpr_ref_non_zero gpr_ref_non_zero_import
-typedef void(*gpr_refn_type)(gpr_refcount *r, int n);
-extern gpr_refn_type gpr_refn_import;
-#define gpr_refn gpr_refn_import
-typedef int(*gpr_unref_type)(gpr_refcount *r);
-extern gpr_unref_type gpr_unref_import;
-#define gpr_unref gpr_unref_import
-typedef void(*gpr_stats_init_type)(gpr_stats_counter *c, intptr_t n);
-extern gpr_stats_init_type gpr_stats_init_import;
-#define gpr_stats_init gpr_stats_init_import
-typedef void(*gpr_stats_inc_type)(gpr_stats_counter *c, intptr_t inc);
-extern gpr_stats_inc_type gpr_stats_inc_import;
-#define gpr_stats_inc gpr_stats_inc_import
-typedef intptr_t(*gpr_stats_read_type)(const gpr_stats_counter *c);
-extern gpr_stats_read_type gpr_stats_read_import;
-#define gpr_stats_read gpr_stats_read_import
-typedef gpr_timespec(*gpr_time_0_type)(gpr_clock_type type);
-extern gpr_time_0_type gpr_time_0_import;
-#define gpr_time_0 gpr_time_0_import
-typedef gpr_timespec(*gpr_inf_future_type)(gpr_clock_type type);
-extern gpr_inf_future_type gpr_inf_future_import;
-#define gpr_inf_future gpr_inf_future_import
-typedef gpr_timespec(*gpr_inf_past_type)(gpr_clock_type type);
-extern gpr_inf_past_type gpr_inf_past_import;
-#define gpr_inf_past gpr_inf_past_import
-typedef void(*gpr_time_init_type)(void);
-extern gpr_time_init_type gpr_time_init_import;
-#define gpr_time_init gpr_time_init_import
-typedef gpr_timespec(*gpr_now_type)(gpr_clock_type clock);
-extern gpr_now_type gpr_now_import;
-#define gpr_now gpr_now_import
-typedef gpr_timespec(*gpr_convert_clock_type_type)(gpr_timespec t, gpr_clock_type target_clock);
-extern gpr_convert_clock_type_type gpr_convert_clock_type_import;
-#define gpr_convert_clock_type gpr_convert_clock_type_import
-typedef int(*gpr_time_cmp_type)(gpr_timespec a, gpr_timespec b);
-extern gpr_time_cmp_type gpr_time_cmp_import;
-#define gpr_time_cmp gpr_time_cmp_import
-typedef gpr_timespec(*gpr_time_max_type)(gpr_timespec a, gpr_timespec b);
-extern gpr_time_max_type gpr_time_max_import;
-#define gpr_time_max gpr_time_max_import
-typedef gpr_timespec(*gpr_time_min_type)(gpr_timespec a, gpr_timespec b);
-extern gpr_time_min_type gpr_time_min_import;
-#define gpr_time_min gpr_time_min_import
-typedef gpr_timespec(*gpr_time_add_type)(gpr_timespec a, gpr_timespec b);
-extern gpr_time_add_type gpr_time_add_import;
-#define gpr_time_add gpr_time_add_import
-typedef gpr_timespec(*gpr_time_sub_type)(gpr_timespec a, gpr_timespec b);
-extern gpr_time_sub_type gpr_time_sub_import;
-#define gpr_time_sub gpr_time_sub_import
-typedef gpr_timespec(*gpr_time_from_micros_type)(int64_t x, gpr_clock_type clock_type);
-extern gpr_time_from_micros_type gpr_time_from_micros_import;
-#define gpr_time_from_micros gpr_time_from_micros_import
-typedef gpr_timespec(*gpr_time_from_nanos_type)(int64_t x, gpr_clock_type clock_type);
-extern gpr_time_from_nanos_type gpr_time_from_nanos_import;
-#define gpr_time_from_nanos gpr_time_from_nanos_import
-typedef gpr_timespec(*gpr_time_from_millis_type)(int64_t x, gpr_clock_type clock_type);
-extern gpr_time_from_millis_type gpr_time_from_millis_import;
-#define gpr_time_from_millis gpr_time_from_millis_import
-typedef gpr_timespec(*gpr_time_from_seconds_type)(int64_t x, gpr_clock_type clock_type);
-extern gpr_time_from_seconds_type gpr_time_from_seconds_import;
-#define gpr_time_from_seconds gpr_time_from_seconds_import
-typedef gpr_timespec(*gpr_time_from_minutes_type)(int64_t x, gpr_clock_type clock_type);
-extern gpr_time_from_minutes_type gpr_time_from_minutes_import;
-#define gpr_time_from_minutes gpr_time_from_minutes_import
-typedef gpr_timespec(*gpr_time_from_hours_type)(int64_t x, gpr_clock_type clock_type);
-extern gpr_time_from_hours_type gpr_time_from_hours_import;
-#define gpr_time_from_hours gpr_time_from_hours_import
-typedef int32_t(*gpr_time_to_millis_type)(gpr_timespec timespec);
-extern gpr_time_to_millis_type gpr_time_to_millis_import;
-#define gpr_time_to_millis gpr_time_to_millis_import
-typedef int(*gpr_time_similar_type)(gpr_timespec a, gpr_timespec b, gpr_timespec threshold);
-extern gpr_time_similar_type gpr_time_similar_import;
-#define gpr_time_similar gpr_time_similar_import
-typedef void(*gpr_sleep_until_type)(gpr_timespec until);
-extern gpr_sleep_until_type gpr_sleep_until_import;
-#define gpr_sleep_until gpr_sleep_until_import
-typedef double(*gpr_timespec_to_micros_type)(gpr_timespec t);
-extern gpr_timespec_to_micros_type gpr_timespec_to_micros_import;
-#define gpr_timespec_to_micros gpr_timespec_to_micros_import
-typedef gpr_avl(*gpr_avl_create_type)(const gpr_avl_vtable *vtable);
-extern gpr_avl_create_type gpr_avl_create_import;
-#define gpr_avl_create gpr_avl_create_import
-typedef gpr_avl(*gpr_avl_ref_type)(gpr_avl avl);
-extern gpr_avl_ref_type gpr_avl_ref_import;
-#define gpr_avl_ref gpr_avl_ref_import
-typedef void(*gpr_avl_unref_type)(gpr_avl avl);
-extern gpr_avl_unref_type gpr_avl_unref_import;
-#define gpr_avl_unref gpr_avl_unref_import
-typedef gpr_avl(*gpr_avl_add_type)(gpr_avl avl, void *key, void *value);
-extern gpr_avl_add_type gpr_avl_add_import;
-#define gpr_avl_add gpr_avl_add_import
-typedef gpr_avl(*gpr_avl_remove_type)(gpr_avl avl, void *key);
-extern gpr_avl_remove_type gpr_avl_remove_import;
-#define gpr_avl_remove gpr_avl_remove_import
-typedef void *(*gpr_avl_get_type)(gpr_avl avl, void *key);
-extern gpr_avl_get_type gpr_avl_get_import;
-#define gpr_avl_get gpr_avl_get_import
-typedef int(*gpr_avl_maybe_get_type)(gpr_avl avl, void *key, void **value);
-extern gpr_avl_maybe_get_type gpr_avl_maybe_get_import;
-#define gpr_avl_maybe_get gpr_avl_maybe_get_import
-typedef int(*gpr_avl_is_empty_type)(gpr_avl avl);
-extern gpr_avl_is_empty_type gpr_avl_is_empty_import;
-#define gpr_avl_is_empty gpr_avl_is_empty_import
-typedef gpr_cmdline *(*gpr_cmdline_create_type)(const char *description);
-extern gpr_cmdline_create_type gpr_cmdline_create_import;
-#define gpr_cmdline_create gpr_cmdline_create_import
-typedef void(*gpr_cmdline_add_int_type)(gpr_cmdline *cl, const char *name, const char *help, int *value);
-extern gpr_cmdline_add_int_type gpr_cmdline_add_int_import;
-#define gpr_cmdline_add_int gpr_cmdline_add_int_import
-typedef void(*gpr_cmdline_add_flag_type)(gpr_cmdline *cl, const char *name, const char *help, int *value);
-extern gpr_cmdline_add_flag_type gpr_cmdline_add_flag_import;
-#define gpr_cmdline_add_flag gpr_cmdline_add_flag_import
-typedef void(*gpr_cmdline_add_string_type)(gpr_cmdline *cl, const char *name, const char *help, char **value);
-extern gpr_cmdline_add_string_type gpr_cmdline_add_string_import;
-#define gpr_cmdline_add_string gpr_cmdline_add_string_import
-typedef void(*gpr_cmdline_on_extra_arg_type)(gpr_cmdline *cl, const char *name, const char *help, void (*on_extra_arg)(void *user_data, const char *arg), void *user_data);
-extern gpr_cmdline_on_extra_arg_type gpr_cmdline_on_extra_arg_import;
-#define gpr_cmdline_on_extra_arg gpr_cmdline_on_extra_arg_import
-typedef void(*gpr_cmdline_set_survive_failure_type)(gpr_cmdline *cl);
-extern gpr_cmdline_set_survive_failure_type gpr_cmdline_set_survive_failure_import;
-#define gpr_cmdline_set_survive_failure gpr_cmdline_set_survive_failure_import
-typedef int(*gpr_cmdline_parse_type)(gpr_cmdline *cl, int argc, char **argv);
-extern gpr_cmdline_parse_type gpr_cmdline_parse_import;
-#define gpr_cmdline_parse gpr_cmdline_parse_import
-typedef void(*gpr_cmdline_destroy_type)(gpr_cmdline *cl);
-extern gpr_cmdline_destroy_type gpr_cmdline_destroy_import;
-#define gpr_cmdline_destroy gpr_cmdline_destroy_import
-typedef char *(*gpr_cmdline_usage_string_type)(gpr_cmdline *cl, const char *argv0);
-extern gpr_cmdline_usage_string_type gpr_cmdline_usage_string_import;
-#define gpr_cmdline_usage_string gpr_cmdline_usage_string_import
-typedef unsigned(*gpr_cpu_num_cores_type)(void);
-extern gpr_cpu_num_cores_type gpr_cpu_num_cores_import;
-#define gpr_cpu_num_cores gpr_cpu_num_cores_import
-typedef unsigned(*gpr_cpu_current_cpu_type)(void);
-extern gpr_cpu_current_cpu_type gpr_cpu_current_cpu_import;
-#define gpr_cpu_current_cpu gpr_cpu_current_cpu_import
-typedef gpr_histogram *(*gpr_histogram_create_type)(double resolution, double max_bucket_start);
-extern gpr_histogram_create_type gpr_histogram_create_import;
-#define gpr_histogram_create gpr_histogram_create_import
-typedef void(*gpr_histogram_destroy_type)(gpr_histogram *h);
-extern gpr_histogram_destroy_type gpr_histogram_destroy_import;
-#define gpr_histogram_destroy gpr_histogram_destroy_import
-typedef void(*gpr_histogram_add_type)(gpr_histogram *h, double x);
-extern gpr_histogram_add_type gpr_histogram_add_import;
-#define gpr_histogram_add gpr_histogram_add_import
-typedef int(*gpr_histogram_merge_type)(gpr_histogram *dst, const gpr_histogram *src);
-extern gpr_histogram_merge_type gpr_histogram_merge_import;
-#define gpr_histogram_merge gpr_histogram_merge_import
-typedef double(*gpr_histogram_percentile_type)(gpr_histogram *histogram, double percentile);
-extern gpr_histogram_percentile_type gpr_histogram_percentile_import;
-#define gpr_histogram_percentile gpr_histogram_percentile_import
-typedef double(*gpr_histogram_mean_type)(gpr_histogram *histogram);
-extern gpr_histogram_mean_type gpr_histogram_mean_import;
-#define gpr_histogram_mean gpr_histogram_mean_import
-typedef double(*gpr_histogram_stddev_type)(gpr_histogram *histogram);
-extern gpr_histogram_stddev_type gpr_histogram_stddev_import;
-#define gpr_histogram_stddev gpr_histogram_stddev_import
-typedef double(*gpr_histogram_variance_type)(gpr_histogram *histogram);
-extern gpr_histogram_variance_type gpr_histogram_variance_import;
-#define gpr_histogram_variance gpr_histogram_variance_import
-typedef double(*gpr_histogram_maximum_type)(gpr_histogram *histogram);
-extern gpr_histogram_maximum_type gpr_histogram_maximum_import;
-#define gpr_histogram_maximum gpr_histogram_maximum_import
-typedef double(*gpr_histogram_minimum_type)(gpr_histogram *histogram);
-extern gpr_histogram_minimum_type gpr_histogram_minimum_import;
-#define gpr_histogram_minimum gpr_histogram_minimum_import
-typedef double(*gpr_histogram_count_type)(gpr_histogram *histogram);
-extern gpr_histogram_count_type gpr_histogram_count_import;
-#define gpr_histogram_count gpr_histogram_count_import
-typedef double(*gpr_histogram_sum_type)(gpr_histogram *histogram);
-extern gpr_histogram_sum_type gpr_histogram_sum_import;
-#define gpr_histogram_sum gpr_histogram_sum_import
-typedef double(*gpr_histogram_sum_of_squares_type)(gpr_histogram *histogram);
-extern gpr_histogram_sum_of_squares_type gpr_histogram_sum_of_squares_import;
-#define gpr_histogram_sum_of_squares gpr_histogram_sum_of_squares_import
-typedef const uint32_t *(*gpr_histogram_get_contents_type)(gpr_histogram *histogram, size_t *count);
-extern gpr_histogram_get_contents_type gpr_histogram_get_contents_import;
-#define gpr_histogram_get_contents gpr_histogram_get_contents_import
-typedef void(*gpr_histogram_merge_contents_type)(gpr_histogram *histogram, const uint32_t *data, size_t data_count, double min_seen, double max_seen, double sum, double sum_of_squares, double count);
-extern gpr_histogram_merge_contents_type gpr_histogram_merge_contents_import;
-#define gpr_histogram_merge_contents gpr_histogram_merge_contents_import
-typedef int(*gpr_join_host_port_type)(char **out, const char *host, int port);
-extern gpr_join_host_port_type gpr_join_host_port_import;
-#define gpr_join_host_port gpr_join_host_port_import
-typedef int(*gpr_split_host_port_type)(const char *name, char **host, char **port);
-extern gpr_split_host_port_type gpr_split_host_port_import;
-#define gpr_split_host_port gpr_split_host_port_import
-typedef char *(*gpr_format_message_type)(int messageid);
-extern gpr_format_message_type gpr_format_message_import;
-#define gpr_format_message gpr_format_message_import
-typedef char *(*gpr_strdup_type)(const char *src);
-extern gpr_strdup_type gpr_strdup_import;
-#define gpr_strdup gpr_strdup_import
-typedef int(*gpr_asprintf_type)(char **strp, const char *format, ...) GPRC_PRINT_FORMAT_CHECK(2, 3);
-extern gpr_asprintf_type gpr_asprintf_import;
-#define gpr_asprintf gpr_asprintf_import
-typedef const char *(*gpr_subprocess_binary_extension_type)();
-extern gpr_subprocess_binary_extension_type gpr_subprocess_binary_extension_import;
-#define gpr_subprocess_binary_extension gpr_subprocess_binary_extension_import
-typedef gpr_subprocess *(*gpr_subprocess_create_type)(int argc, const char **argv);
-extern gpr_subprocess_create_type gpr_subprocess_create_import;
-#define gpr_subprocess_create gpr_subprocess_create_import
-typedef void(*gpr_subprocess_destroy_type)(gpr_subprocess *p);
-extern gpr_subprocess_destroy_type gpr_subprocess_destroy_import;
-#define gpr_subprocess_destroy gpr_subprocess_destroy_import
-typedef int(*gpr_subprocess_join_type)(gpr_subprocess *p);
-extern gpr_subprocess_join_type gpr_subprocess_join_import;
-#define gpr_subprocess_join gpr_subprocess_join_import
-typedef void(*gpr_subprocess_interrupt_type)(gpr_subprocess *p);
-extern gpr_subprocess_interrupt_type gpr_subprocess_interrupt_import;
-#define gpr_subprocess_interrupt gpr_subprocess_interrupt_import
-typedef int(*gpr_thd_new_type)(gpr_thd_id *t, void (*thd_body)(void *arg), void *arg, const gpr_thd_options *options);
-extern gpr_thd_new_type gpr_thd_new_import;
-#define gpr_thd_new gpr_thd_new_import
-typedef gpr_thd_options(*gpr_thd_options_default_type)(void);
-extern gpr_thd_options_default_type gpr_thd_options_default_import;
-#define gpr_thd_options_default gpr_thd_options_default_import
-typedef void(*gpr_thd_options_set_detached_type)(gpr_thd_options *options);
-extern gpr_thd_options_set_detached_type gpr_thd_options_set_detached_import;
-#define gpr_thd_options_set_detached gpr_thd_options_set_detached_import
-typedef void(*gpr_thd_options_set_joinable_type)(gpr_thd_options *options);
-extern gpr_thd_options_set_joinable_type gpr_thd_options_set_joinable_import;
-#define gpr_thd_options_set_joinable gpr_thd_options_set_joinable_import
-typedef int(*gpr_thd_options_is_detached_type)(const gpr_thd_options *options);
-extern gpr_thd_options_is_detached_type gpr_thd_options_is_detached_import;
-#define gpr_thd_options_is_detached gpr_thd_options_is_detached_import
-typedef int(*gpr_thd_options_is_joinable_type)(const gpr_thd_options *options);
-extern gpr_thd_options_is_joinable_type gpr_thd_options_is_joinable_import;
-#define gpr_thd_options_is_joinable gpr_thd_options_is_joinable_import
-typedef gpr_thd_id(*gpr_thd_currentid_type)(void);
-extern gpr_thd_currentid_type gpr_thd_currentid_import;
-#define gpr_thd_currentid gpr_thd_currentid_import
-typedef void(*gpr_thd_join_type)(gpr_thd_id t);
-extern gpr_thd_join_type gpr_thd_join_import;
-#define gpr_thd_join gpr_thd_join_import
-
-#ifdef __cplusplus
-extern "C" {
-#endif  /* __cpluslus */
-
-void pygrpc_load_imports(HMODULE library);
-
-#ifdef __cplusplus
-}
-#endif  /* __cpluslus */
-
-#else /* !GPR_WINDOWS */
-
 #include <grpc/byte_buffer.h>
 #include <grpc/byte_buffer_reader.h>
 #include <grpc/compression.h>
@@ -895,6 +47,4 @@
 #include <grpc/support/time.h>
 #include <grpc/status.h>
 
-#endif /* !GPR_WINDOWS */
-
 #endif
diff --git a/src/python/grpcio/grpc/_cython/loader.c b/src/python/grpcio/grpc/_cython/loader.c
index 86b70db..34bd897 100644
--- a/src/python/grpcio/grpc/_cython/loader.c
+++ b/src/python/grpcio/grpc/_cython/loader.c
@@ -38,31 +38,8 @@
 extern "C" {
 #endif  /* __cpluslus  */
 
-#if GPR_WINDOWS
-
-int pygrpc_load_core(char *path) {
-  HMODULE grpc_c;
-#ifdef GPR_ARCH_32
-  /* Close your eyes for a moment, it'll all be over soon. */
-  char *six = strrchr(path, '6');
-  *six++ = '3';
-  *six = '2';
-#endif
-  grpc_c = LoadLibraryA(path);
-  if (grpc_c) {
-    pygrpc_load_imports(grpc_c);
-    return 1;
-  }
-
-  return 0;
-}
-
-#else
-
 int pygrpc_load_core(char *path) { return 1; }
 
-#endif  /* !GPR_WINDOWS */
-
 // Cython doesn't have Py_AtExit bindings, so we call the C_API directly
 int pygrpc_initialize_core(void) {
   grpc_init();
diff --git a/src/python/grpcio/grpc/_cython/loader.h b/src/python/grpcio/grpc/_cython/loader.h
index eb4b1a1..62fd225 100644
--- a/src/python/grpcio/grpc/_cython/loader.h
+++ b/src/python/grpcio/grpc/_cython/loader.h
@@ -39,6 +39,8 @@
 /* Additional inclusions not covered by "imports.generated.h" */
 #include <grpc/byte_buffer_reader.h>
 
+/* TODO(atash) remove cruft */
+
 #ifdef __cplusplus
 extern "C" {
 #endif  /* __cpluslus */
diff --git a/src/python/grpcio/grpc/_server.py b/src/python/grpcio/grpc/_server.py
index f4c1140..94a13bf 100644
--- a/src/python/grpcio/grpc/_server.py
+++ b/src/python/grpcio/grpc/_server.py
@@ -157,7 +157,7 @@
               effective_details, _EMPTY_FLAGS),
       )
       token = _SEND_STATUS_FROM_SERVER_TOKEN
-    call.start_batch(
+    call.start_server_batch(
         cygrpc.Operations(operations),
         _send_status_from_server(state, token))
     state.statused = True
@@ -257,7 +257,7 @@
         if self._state.initial_metadata_allowed:
           operation = cygrpc.operation_send_initial_metadata(
               _common.cygrpc_metadata(initial_metadata), _EMPTY_FLAGS)
-          self._rpc_event.operation_call.start_batch(
+          self._rpc_event.operation_call.start_server_batch(
               cygrpc.Operations((operation,)),
               _send_initial_metadata(self._state))
           self._state.initial_metadata_allowed = False
@@ -292,7 +292,7 @@
     elif self._state.client is _CLOSED or self._state.statused:
       raise StopIteration()
     else:
-      self._call.start_batch(
+      self._call.start_server_batch(
           cygrpc.Operations((cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
           _receive_message(self._state, self._call, self._request_deserializer))
       self._state.due.add(_RECEIVE_MESSAGE_TOKEN)
@@ -333,7 +333,7 @@
       if state.client is _CANCELLED or state.statused:
         return None
       else:
-        start_batch_result = rpc_event.operation_call.start_batch(
+        start_server_batch_result = rpc_event.operation_call.start_server_batch(
             cygrpc.Operations(
                 (cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
             _receive_message(
@@ -417,7 +417,7 @@
             cygrpc.operation_send_message(serialized_response, _EMPTY_FLAGS),
         )
         token = _SEND_MESSAGE_TOKEN
-      rpc_event.operation_call.start_batch(
+      rpc_event.operation_call.start_server_batch(
           cygrpc.Operations(operations), _send_message(state, token))
       state.due.add(token)
       while True:
@@ -443,7 +443,7 @@
       if serialized_response is not None:
         operations.append(cygrpc.operation_send_message(
             serialized_response, _EMPTY_FLAGS))
-      rpc_event.operation_call.start_batch(
+      rpc_event.operation_call.start_server_batch(
           cygrpc.Operations(operations),
           _send_status_from_server(state, _SEND_STATUS_FROM_SERVER_TOKEN))
       state.statused = True
@@ -550,7 +550,7 @@
           b'Method not found!', _EMPTY_FLAGS),
   )
   rpc_state = _RPCState()
-  rpc_event.operation_call.start_batch(
+  rpc_event.operation_call.start_server_batch(
       operations, lambda ignored_event: (rpc_state, (),))
   return rpc_state
 
@@ -558,7 +558,7 @@
 def _handle_with_method_handler(rpc_event, method_handler, thread_pool):
   state = _RPCState()
   with state.condition:
-    rpc_event.operation_call.start_batch(
+    rpc_event.operation_call.start_server_batch(
         cygrpc.Operations(
             (cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),)),
         _receive_close_on_server(state))
@@ -731,7 +731,7 @@
 
 class Server(grpc.Server):
 
-  def __init__(self, generic_handlers, thread_pool):
+  def __init__(self, thread_pool, generic_handlers):
     completion_queue = cygrpc.CompletionQueue()
     server = cygrpc.Server()
     server.register_completion_queue(completion_queue)
diff --git a/src/python/grpcio/grpc/beta/_client_adaptations.py b/src/python/grpcio/grpc/beta/_client_adaptations.py
index 56456cc..73415e0 100644
--- a/src/python/grpcio/grpc/beta/_client_adaptations.py
+++ b/src/python/grpcio/grpc/beta/_client_adaptations.py
@@ -117,7 +117,10 @@
   def exception(self, timeout=None):
     try:
       rpc_error_call = self._future.exception(timeout=timeout)
-      return _abortion_error(rpc_error_call)
+      if rpc_error_call is None:
+        return None
+      else:
+        return _abortion_error(rpc_error_call)
     except grpc.FutureTimeoutError:
       raise future.TimeoutError()
     except grpc.FutureCancelledError:
diff --git a/src/python/grpcio/grpc/beta/_server_adaptations.py b/src/python/grpcio/grpc/beta/_server_adaptations.py
index 1e1f801..cca4a17 100644
--- a/src/python/grpcio/grpc/beta/_server_adaptations.py
+++ b/src/python/grpcio/grpc/beta/_server_adaptations.py
@@ -371,4 +371,5 @@
         _DEFAULT_POOL_SIZE if thread_pool_size is None else thread_pool_size)
   else:
     effective_thread_pool = thread_pool
-  return _Server(grpc.server((generic_rpc_handler,), effective_thread_pool))
+  return _Server(
+      grpc.server(effective_thread_pool, handlers=(generic_rpc_handler,)))
diff --git a/src/python/grpcio/support.py b/src/python/grpcio/support.py
index 33244eb..7730374 100644
--- a/src/python/grpcio/support.py
+++ b/src/python/grpcio/support.py
@@ -50,7 +50,6 @@
     (check your environment variables or try re-installing?)
   * You're on Windows and your Python installation was somehow corrupted
     (check your environment variables or try re-installing?)
-    * Note: Windows users should look into installing `vcpython27`.
 """
 
 C_CHECKS = {
diff --git a/src/python/grpcio_tests/tests/_runner.py b/src/python/grpcio_tests/tests/_runner.py
index f071857..926dcbe 100644
--- a/src/python/grpcio_tests/tests/_runner.py
+++ b/src/python/grpcio_tests/tests/_runner.py
@@ -30,7 +30,6 @@
 from __future__ import absolute_import
 
 import collections
-import fcntl
 import multiprocessing
 import os
 import select
@@ -178,15 +177,20 @@
         stderr_pipe.write_bypass(
             '\ninterrupted stderr:\n{}\n'.format(stderr_pipe.output().decode()))
         os._exit(1)
-    signal.signal(signal.SIGINT, sigint_handler)
-    signal.signal(signal.SIGSEGV, fault_handler)
-    signal.signal(signal.SIGBUS, fault_handler)
-    signal.signal(signal.SIGABRT, fault_handler)
-    signal.signal(signal.SIGFPE, fault_handler)
-    signal.signal(signal.SIGILL, fault_handler)
+    def try_set_handler(name, handler):
+      try:
+        signal.signal(getattr(signal, name), handler)
+      except AttributeError:
+        pass
+    try_set_handler('SIGINT', sigint_handler)
+    try_set_handler('SIGSEGV', fault_handler)
+    try_set_handler('SIGBUS', fault_handler)
+    try_set_handler('SIGABRT', fault_handler)
+    try_set_handler('SIGFPE', fault_handler)
+    try_set_handler('SIGILL', fault_handler)
     # Sometimes output will lag after a test has successfully finished; we
     # ignore such writes to our pipes.
-    signal.signal(signal.SIGPIPE, signal.SIG_IGN)
+    try_set_handler('SIGPIPE', signal.SIG_IGN)
 
     # Run the tests
     result.startTestRun()
diff --git a/src/python/grpcio_tests/tests/interop/_insecure_interop_test.py b/src/python/grpcio_tests/tests/interop/_insecure_interop_test.py
index 91519b6..c753d6f 100644
--- a/src/python/grpcio_tests/tests/interop/_insecure_interop_test.py
+++ b/src/python/grpcio_tests/tests/interop/_insecure_interop_test.py
@@ -48,7 +48,7 @@
     port = self.server.add_insecure_port('[::]:0')
     self.server.start()
     self.stub = test_pb2.beta_create_TestService_stub(
-        implementations.insecure_channel('[::]', port))
+        implementations.insecure_channel('localhost', port))
 
   def tearDown(self):
     self.server.stop(0)
diff --git a/src/python/grpcio_tests/tests/interop/_secure_interop_test.py b/src/python/grpcio_tests/tests/interop/_secure_interop_test.py
index c61547b..cb09f54 100644
--- a/src/python/grpcio_tests/tests/interop/_secure_interop_test.py
+++ b/src/python/grpcio_tests/tests/interop/_secure_interop_test.py
@@ -55,7 +55,7 @@
     self.server.start()
     self.stub = test_pb2.beta_create_TestService_stub(
         test_utilities.not_really_secure_channel(
-            '[::]', port, implementations.ssl_channel_credentials(
+            'localhost', port, implementations.ssl_channel_credentials(
                 resources.test_root_certificates()),
                 _SERVER_HOST_OVERRIDE))
 
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py b/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
index bf09380..7ca2bcf 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
@@ -171,7 +171,7 @@
       return servicer_methods.HalfDuplexCall(request_iter, context)
 
   server = grpc.server(
-      (), futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
+      futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
   getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(), server)
   port = server.add_insecure_port('[::]:0')
   server.start()
@@ -192,7 +192,7 @@
     pass
 
   server = grpc.server(
-      (), futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
+      futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
   getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(), server)
   port = server.add_insecure_port('[::]:0')
   server.start()
diff --git a/src/python/grpcio_tests/tests/qps/benchmark_client.py b/src/python/grpcio_tests/tests/qps/benchmark_client.py
index 0802814..83b46c9 100644
--- a/src/python/grpcio_tests/tests/qps/benchmark_client.py
+++ b/src/python/grpcio_tests/tests/qps/benchmark_client.py
@@ -37,16 +37,23 @@
 from six.moves import queue
 
 import grpc
-from grpc.beta import implementations
-from grpc.framework.interfaces.face import face
 from src.proto.grpc.testing import messages_pb2
 from src.proto.grpc.testing import services_pb2
 from tests.unit import resources
-from tests.unit.beta import test_utilities
+from tests.unit import test_common
 
 _TIMEOUT = 60 * 60 * 24
 
 
+class GenericStub(object):
+
+  def __init__(self, channel):
+    self.UnaryCall = channel.unary_unary(
+        '/grpc.testing.BenchmarkService/UnaryCall')
+    self.StreamingCall = channel.stream_stream(
+        '/grpc.testing.BenchmarkService/StreamingCall')
+
+
 class BenchmarkClient:
   """Benchmark client interface that exposes a non-blocking send_request()."""
 
@@ -54,15 +61,12 @@
 
   def __init__(self, server, config, hist):
     # Create the stub
-    host, port = server.split(':')
-    port = int(port)
     if config.HasField('security_params'):
-      creds = implementations.ssl_channel_credentials(
-          resources.test_root_certificates())
-      channel = test_utilities.not_really_secure_channel(
-          host, port, creds, config.security_params.server_host_override)
+      creds = grpc.ssl_channel_credentials(resources.test_root_certificates())
+      channel = test_common.test_secure_channel(
+        server, creds, config.security_params.server_host_override)
     else:
-      channel = implementations.insecure_channel(host, port)
+      channel = grpc.insecure_channel(server)
 
     connected_event = threading.Event()
     def wait_for_ready(connectivity):
@@ -73,7 +77,7 @@
 
     if config.payload_config.WhichOneof('payload') == 'simple_params':
       self._generic = False
-      self._stub = services_pb2.beta_create_BenchmarkService_stub(channel)
+      self._stub = services_pb2.BenchmarkServiceStub(channel)
       payload = messages_pb2.Payload(
           body='\0' * config.payload_config.simple_params.req_size)
       self._request = messages_pb2.SimpleRequest(
@@ -81,7 +85,7 @@
           response_size=config.payload_config.simple_params.resp_size)
     else:
       self._generic = True
-      self._stub = implementations.generic_stub(channel)
+      self._stub = GenericStub(channel)
       self._request = '\0' * config.payload_config.bytebuf_params.req_size
 
     self._hist = hist
@@ -166,13 +170,8 @@
 
   def start(self):
     self._is_streaming = True
-    if self._generic:
-      stream_callable = self._stub.stream_stream(
-          'grpc.testing.BenchmarkService', 'StreamingCall')
-    else:
-      stream_callable = self._stub.StreamingCall
-
-    response_stream = stream_callable(self._request_generator(), _TIMEOUT)
+    response_stream = self._stub.StreamingCall(
+        self._request_generator(), _TIMEOUT)
     for _ in response_stream:
       self._handle_response(
           self, time.time() - self._send_time_queue.get_nowait())
diff --git a/src/python/grpcio_tests/tests/qps/benchmark_server.py b/src/python/grpcio_tests/tests/qps/benchmark_server.py
index 8cbf480..2b76b81 100644
--- a/src/python/grpcio_tests/tests/qps/benchmark_server.py
+++ b/src/python/grpcio_tests/tests/qps/benchmark_server.py
@@ -31,7 +31,7 @@
 from src.proto.grpc.testing import services_pb2
 
 
-class BenchmarkServer(services_pb2.BetaBenchmarkServiceServicer):
+class BenchmarkServer(services_pb2.BenchmarkServiceServicer):
   """Synchronous Server implementation for the Benchmark service."""
 
   def UnaryCall(self, request, context):
@@ -44,7 +44,7 @@
       yield messages_pb2.SimpleResponse(payload=payload)
 
 
-class GenericBenchmarkServer(services_pb2.BetaBenchmarkServiceServicer):
+class GenericBenchmarkServer(services_pb2.BenchmarkServiceServicer):
   """Generic Server implementation for the Benchmark service."""
 
   def __init__(self, resp_size):
diff --git a/src/python/grpcio_tests/tests/qps/qps_worker.py b/src/python/grpcio_tests/tests/qps/qps_worker.py
index 1692637..3abf0d0 100644
--- a/src/python/grpcio_tests/tests/qps/qps_worker.py
+++ b/src/python/grpcio_tests/tests/qps/qps_worker.py
@@ -32,18 +32,21 @@
 import argparse
 import time
 
+from concurrent import futures
+import grpc
 from src.proto.grpc.testing import services_pb2
 
 from tests.qps import worker_server
 
 
 def run_worker_server(port):
+  server = grpc.server((), futures.ThreadPoolExecutor(max_workers=5))
   servicer = worker_server.WorkerServer()
-  server = services_pb2.beta_create_WorkerService_server(servicer)
+  services_pb2.add_WorkerServiceServicer_to_server(servicer, server)
   server.add_insecure_port('[::]:{}'.format(port))
   server.start()
   servicer.wait_for_quit()
-  server.stop(2)
+  server.stop(0)
 
 
 if __name__ == '__main__':
diff --git a/src/python/grpcio_tests/tests/qps/worker_server.py b/src/python/grpcio_tests/tests/qps/worker_server.py
index d41f837..932a1ff 100644
--- a/src/python/grpcio_tests/tests/qps/worker_server.py
+++ b/src/python/grpcio_tests/tests/qps/worker_server.py
@@ -32,8 +32,8 @@
 import threading
 import time
 
-from grpc.beta import implementations
-from grpc.framework.interfaces.face import utilities
+from concurrent import futures
+import grpc
 from src.proto.grpc.testing import control_pb2
 from src.proto.grpc.testing import services_pb2
 from src.proto.grpc.testing import stats_pb2
@@ -45,7 +45,7 @@
 from tests.unit import resources
 
 
-class WorkerServer(services_pb2.BetaWorkerServiceServicer):
+class WorkerServer(services_pb2.WorkerServiceServicer):
   """Python Worker Server implementation."""
 
   def __init__(self):
@@ -65,7 +65,7 @@
       if request.mark.reset:
         start_time = end_time
       yield status
-    server.stop(0)
+    server.stop(None)
 
   def _get_server_status(self, start_time, end_time, port, cores):
     end_time = time.time()
@@ -76,25 +76,35 @@
     return control_pb2.ServerStatus(stats=stats, port=port, cores=cores)
 
   def _create_server(self, config):
-    if config.server_type == control_pb2.SYNC_SERVER:
+    if config.async_server_threads == 0:
+      # This is the default concurrent.futures thread pool size, but
+      # None doesn't seem to work
+      server_threads = multiprocessing.cpu_count() * 5
+    else:
+      server_threads = config.async_server_threads
+    server = grpc.server((), futures.ThreadPoolExecutor(
+        max_workers=server_threads))
+    if config.server_type == control_pb2.ASYNC_SERVER:
       servicer = benchmark_server.BenchmarkServer()
-      server = services_pb2.beta_create_BenchmarkService_server(servicer)
+      services_pb2.add_BenchmarkServiceServicer_to_server(servicer, server)
     elif config.server_type == control_pb2.ASYNC_GENERIC_SERVER:
       resp_size = config.payload_config.bytebuf_params.resp_size
       servicer = benchmark_server.GenericBenchmarkServer(resp_size)
       method_implementations = {
-          ('grpc.testing.BenchmarkService', 'StreamingCall'):
-          utilities.stream_stream_inline(servicer.StreamingCall),
-          ('grpc.testing.BenchmarkService', 'UnaryCall'):
-          utilities.unary_unary_inline(servicer.UnaryCall),
+          'StreamingCall':
+          grpc.stream_stream_rpc_method_handler(servicer.StreamingCall),
+          'UnaryCall':
+          grpc.unary_unary_rpc_method_handler(servicer.UnaryCall),
       }
-      server = implementations.server(method_implementations)
+      handler = grpc.method_handlers_generic_handler(
+          'grpc.testing.BenchmarkService', method_implementations)
+      server.add_generic_rpc_handlers((handler,))
     else:
       raise Exception('Unsupported server type {}'.format(config.server_type))
 
     if config.HasField('security_params'):  # Use SSL
-      server_creds = implementations.ssl_server_credentials([(
-          resources.private_key(), resources.certificate_chain())])
+      server_creds = grpc.ssl_server_credentials(
+          ((resources.private_key(), resources.certificate_chain()),))
       port = server.add_secure_port('[::]:{}'.format(config.port), server_creds)
     else:
       port = server.add_insecure_port('[::]:{}'.format(config.port))
diff --git a/src/python/grpcio_tests/tests/tests.json b/src/python/grpcio_tests/tests/tests.json
index 45eb75b..dcaef0d 100644
--- a/src/python/grpcio_tests/tests/tests.json
+++ b/src/python/grpcio_tests/tests/tests.json
@@ -12,6 +12,7 @@
   "_channel_test.ChannelTest", 
   "_compression_test.CompressionTest",
   "_connectivity_channel_test.ConnectivityStatesTest",
+  "_credentials_test.CredentialsTest",
   "_empty_message_test.EmptyMessageTest",
   "_exit_test.ExitTest",
   "_face_interface_test.DynamicInvokerBlockingInvocationInlineServiceTest", 
diff --git a/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py b/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py
index ae8de52..3c00f68 100644
--- a/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py
+++ b/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py
@@ -104,7 +104,7 @@
         grpc.ChannelConnectivity.READY, fifth_connectivities)
 
   def test_immediately_connectable_channel_connectivity(self):
-    server = _server.Server((), futures.ThreadPoolExecutor(max_workers=0))
+    server = _server.Server(futures.ThreadPoolExecutor(max_workers=0), ())
     port = server.add_insecure_port('[::]:0')
     server.start()
     first_callback = _Callback()
@@ -143,7 +143,7 @@
         grpc.ChannelConnectivity.SHUTDOWN, fourth_connectivities)
 
   def test_reachable_then_unreachable_channel_connectivity(self):
-    server = _server.Server((), futures.ThreadPoolExecutor(max_workers=0))
+    server = _server.Server(futures.ThreadPoolExecutor(max_workers=0), ())
     port = server.add_insecure_port('[::]:0')
     server.start()
     callback = _Callback()
diff --git a/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py b/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py
index b84bc01..e8982ed 100644
--- a/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py
+++ b/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py
@@ -78,7 +78,7 @@
     self.assertFalse(ready_future.running())
 
   def test_immediately_connectable_channel_connectivity(self):
-    server = _server.Server((), futures.ThreadPoolExecutor(max_workers=0))
+    server = _server.Server(futures.ThreadPoolExecutor(max_workers=0), ())
     port = server.add_insecure_port('[::]:0')
     server.start()
     channel = grpc.insecure_channel('localhost:{}'.format(port))
diff --git a/src/python/grpcio_tests/tests/unit/_compression_test.py b/src/python/grpcio_tests/tests/unit/_compression_test.py
index 9e8b857..83b9109 100644
--- a/src/python/grpcio_tests/tests/unit/_compression_test.py
+++ b/src/python/grpcio_tests/tests/unit/_compression_test.py
@@ -88,7 +88,8 @@
 
   def setUp(self):
     self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    self._server = grpc.server((_GenericHandler(),), self._server_pool)
+    self._server = grpc.server(
+        self._server_pool, handlers=(_GenericHandler(),))
     self._port = self._server.add_insecure_port('[::]:0')
     self._server.start()
 
diff --git a/src/python/grpcio_tests/tests/unit/_credentials_test.py b/src/python/grpcio_tests/tests/unit/_credentials_test.py
new file mode 100644
index 0000000..87af85a
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/_credentials_test.py
@@ -0,0 +1,72 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Tests of credentials."""
+
+import unittest
+
+import grpc
+
+
+class CredentialsTest(unittest.TestCase):
+
+  def test_call_credentials_composition(self):
+    first = grpc.access_token_call_credentials('abc')
+    second = grpc.access_token_call_credentials('def')
+    third = grpc.access_token_call_credentials('ghi')
+
+    first_and_second = grpc.composite_call_credentials(first, second)
+    first_second_and_third = grpc.composite_call_credentials(
+        first, second, third)
+    
+    self.assertIsInstance(first_and_second, grpc.CallCredentials)
+    self.assertIsInstance(first_second_and_third, grpc.CallCredentials)
+
+  def test_channel_credentials_composition(self):
+    first_call_credentials = grpc.access_token_call_credentials('abc')
+    second_call_credentials = grpc.access_token_call_credentials('def')
+    third_call_credentials = grpc.access_token_call_credentials('ghi')
+    channel_credentials = grpc.ssl_channel_credentials()
+
+    channel_and_first = grpc.composite_channel_credentials(
+        channel_credentials, first_call_credentials)
+    channel_first_and_second = grpc.composite_channel_credentials(
+        channel_credentials, first_call_credentials, second_call_credentials)
+    channel_first_second_and_third = grpc.composite_channel_credentials(
+        channel_credentials, first_call_credentials, second_call_credentials,
+        third_call_credentials)
+
+    self.assertIsInstance(channel_and_first, grpc.ChannelCredentials)
+    self.assertIsInstance(channel_first_and_second, grpc.ChannelCredentials)
+    self.assertIsInstance(
+        channel_first_second_and_third, grpc.ChannelCredentials)
+
+
+if __name__ == '__main__':
+  unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py b/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py
index cac0c8b..cf212c5 100644
--- a/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py
@@ -81,11 +81,11 @@
         self._state.condition.wait()
 
     with self._lock:
-      self._call.start_batch(
+      self._call.start_server_batch(
           cygrpc.Operations(
               (cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),)),
           _RECEIVE_CLOSE_ON_SERVER_TAG)
-      self._call.start_batch(
+      self._call.start_server_batch(
           cygrpc.Operations((cygrpc.operation_receive_message(_EMPTY_FLAGS),)),
           _RECEIVE_MESSAGE_TAG)
     first_event = self._completion_queue.poll()
@@ -101,7 +101,7 @@
                 _EMPTY_METADATA, cygrpc.StatusCode.ok, b'test details!',
                 _EMPTY_FLAGS),
         )
-        self._call.start_batch(
+        self._call.start_server_batch(
             cygrpc.Operations(operations), _SERVER_COMPLETE_CALL_TAG)
       self._completion_queue.poll()
       self._completion_queue.poll()
@@ -193,7 +193,7 @@
             cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS),
         )
         tag = 'client_complete_call_{0:04d}_tag'.format(index)
-        client_call.start_batch(cygrpc.Operations(operations), tag)
+        client_call.start_client_batch(cygrpc.Operations(operations), tag)
         client_due.add(tag)
         client_calls.append(client_call)
 
diff --git a/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py b/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py
index 27fcee0..152d8edde 100644
--- a/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py
@@ -168,12 +168,12 @@
     client_complete_rpc_tag = 'client_complete_rpc_tag'
     with client_condition:
       client_receive_initial_metadata_start_batch_result = (
-          client_call.start_batch(cygrpc.Operations([
+          client_call.start_client_batch(cygrpc.Operations([
               cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
           ]), client_receive_initial_metadata_tag))
       client_due.add(client_receive_initial_metadata_tag)
       client_complete_rpc_start_batch_result = (
-          client_call.start_batch(cygrpc.Operations([
+          client_call.start_client_batch(cygrpc.Operations([
               cygrpc.operation_send_initial_metadata(
                   _EMPTY_METADATA, _EMPTY_FLAGS),
               cygrpc.operation_send_close_from_client(_EMPTY_FLAGS),
@@ -185,30 +185,30 @@
 
     with server_call_condition:
       server_send_initial_metadata_start_batch_result = (
-          server_rpc_event.operation_call.start_batch(cygrpc.Operations([
+          server_rpc_event.operation_call.start_server_batch([
               cygrpc.operation_send_initial_metadata(
                   _EMPTY_METADATA, _EMPTY_FLAGS),
-          ]), server_send_initial_metadata_tag))
+          ], server_send_initial_metadata_tag))
       server_send_first_message_start_batch_result = (
-          server_rpc_event.operation_call.start_batch(cygrpc.Operations([
+          server_rpc_event.operation_call.start_server_batch([
               cygrpc.operation_send_message(b'\x07', _EMPTY_FLAGS),
-          ]), server_send_first_message_tag))
+          ], server_send_first_message_tag))
     server_send_initial_metadata_event = server_call_driver.event_with_tag(
         server_send_initial_metadata_tag)
     server_send_first_message_event = server_call_driver.event_with_tag(
         server_send_first_message_tag)
     with server_call_condition:
       server_send_second_message_start_batch_result = (
-          server_rpc_event.operation_call.start_batch(cygrpc.Operations([
+          server_rpc_event.operation_call.start_server_batch([
               cygrpc.operation_send_message(b'\x07', _EMPTY_FLAGS),
-          ]), server_send_second_message_tag))
+          ], server_send_second_message_tag))
       server_complete_rpc_start_batch_result = (
-          server_rpc_event.operation_call.start_batch(cygrpc.Operations([
+          server_rpc_event.operation_call.start_server_batch([
               cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),
               cygrpc.operation_send_status_from_server(
                   cygrpc.Metadata(()), cygrpc.StatusCode.ok, b'test details',
                   _EMPTY_FLAGS),
-          ]), server_complete_rpc_tag))
+          ], server_complete_rpc_tag))
     server_send_second_message_event = server_call_driver.event_with_tag(
         server_send_second_message_tag)
     server_complete_rpc_event = server_call_driver.event_with_tag(
@@ -218,7 +218,7 @@
     with client_condition:
       client_receive_first_message_tag = 'client_receive_first_message_tag'
       client_receive_first_message_start_batch_result = (
-          client_call.start_batch(cygrpc.Operations([
+          client_call.start_client_batch(cygrpc.Operations([
               cygrpc.operation_receive_message(_EMPTY_FLAGS),
           ]), client_receive_first_message_tag))
       client_due.add(client_receive_first_message_tag)
diff --git a/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py b/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py
index b740695..9d1dbc1 100644
--- a/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py
@@ -186,7 +186,8 @@
     def performer():
       tag = object()
       try:
-        call_result = call.start_batch(cygrpc.Operations(operations), tag)
+        call_result = call.start_client_batch(
+            cygrpc.Operations(operations), tag)
         self.assertEqual(cygrpc.CallError.ok, call_result)
         event = queue.poll(deadline)
         self.assertEqual(cygrpc.CompletionType.operation_complete, event.type)
@@ -231,7 +232,7 @@
         cygrpc.Metadatum(CLIENT_METADATA_ASCII_KEY,
                          CLIENT_METADATA_ASCII_VALUE),
         cygrpc.Metadatum(CLIENT_METADATA_BIN_KEY, CLIENT_METADATA_BIN_VALUE)])
-    client_start_batch_result = client_call.start_batch(cygrpc.Operations([
+    client_start_batch_result = client_call.start_client_batch([
         cygrpc.operation_send_initial_metadata(client_initial_metadata,
                                                _EMPTY_FLAGS),
         cygrpc.operation_send_message(REQUEST, _EMPTY_FLAGS),
@@ -239,7 +240,7 @@
         cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS),
         cygrpc.operation_receive_message(_EMPTY_FLAGS),
         cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS)
-    ]), client_call_tag)
+    ], client_call_tag)
     self.assertEqual(cygrpc.CallError.ok, client_start_batch_result)
     client_event_future = test_utilities.CompletionQueuePollFuture(
         self.client_completion_queue, cygrpc_deadline)
@@ -268,7 +269,7 @@
     server_trailing_metadata = cygrpc.Metadata([
         cygrpc.Metadatum(SERVER_TRAILING_METADATA_KEY,
                          SERVER_TRAILING_METADATA_VALUE)])
-    server_start_batch_result = server_call.start_batch([
+    server_start_batch_result = server_call.start_server_batch([
         cygrpc.operation_send_initial_metadata(server_initial_metadata,
                                                _EMPTY_FLAGS),
         cygrpc.operation_receive_message(_EMPTY_FLAGS),
diff --git a/src/python/grpcio_tests/tests/unit/_empty_message_test.py b/src/python/grpcio_tests/tests/unit/_empty_message_test.py
index 8c7d697..131f6e9 100644
--- a/src/python/grpcio_tests/tests/unit/_empty_message_test.py
+++ b/src/python/grpcio_tests/tests/unit/_empty_message_test.py
@@ -103,7 +103,8 @@
 
   def setUp(self):
     self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    self._server = grpc.server((_GenericHandler(),), self._server_pool)
+    self._server = grpc.server(
+        self._server_pool, handlers=(_GenericHandler(),))
     port = self._server.add_insecure_port('[::]:0')
     self._server.start()
     self._channel = grpc.insecure_channel('localhost:%d' % port)
diff --git a/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py b/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py
index 0fd02d2..fb3e547 100644
--- a/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py
+++ b/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py
@@ -189,7 +189,7 @@
     self._servicer = _Servicer()
     self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
     self._server = grpc.server(
-        (_generic_handler(self._servicer),), self._server_pool)
+        self._server_pool, handlers=(_generic_handler(self._servicer),))
     port = self._server.add_insecure_port('[::]:0')
     self._server.start()
 
diff --git a/src/python/grpcio_tests/tests/unit/_metadata_test.py b/src/python/grpcio_tests/tests/unit/_metadata_test.py
index c637a28..da73476 100644
--- a/src/python/grpcio_tests/tests/unit/_metadata_test.py
+++ b/src/python/grpcio_tests/tests/unit/_metadata_test.py
@@ -161,8 +161,8 @@
 
   def setUp(self):
     self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
-    self._server = grpc.server((_GenericHandler(weakref.proxy(self)),),
-                               self._server_pool)
+    self._server = grpc.server(
+        self._server_pool, handlers=(_GenericHandler(weakref.proxy(self)),))
     port = self._server.add_insecure_port('[::]:0')
     self._server.start()
     self._channel = grpc.insecure_channel('localhost:%d' % port,
diff --git a/src/python/grpcio_tests/tests/unit/_rpc_test.py b/src/python/grpcio_tests/tests/unit/_rpc_test.py
index c70d65a..59bf240 100644
--- a/src/python/grpcio_tests/tests/unit/_rpc_test.py
+++ b/src/python/grpcio_tests/tests/unit/_rpc_test.py
@@ -184,7 +184,7 @@
     self._handler = _Handler(self._control)
     self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
 
-    self._server = grpc.server((), self._server_pool)
+    self._server = grpc.server(self._server_pool)
     port = self._server.add_insecure_port('[::]:0')
     self._server.add_generic_rpc_handlers((_GenericHandler(self._handler),))
     self._server.start()
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py
index 7916203..d32208f 100644
--- a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py
@@ -41,6 +41,7 @@
 import six
 
 # test_interfaces is referenced from specification in this module.
+from grpc.framework.foundation import future
 from grpc.framework.foundation import logging_pool
 from grpc.framework.interfaces.face import face
 from tests.unit.framework.common import test_constants
@@ -159,6 +160,8 @@
 
         test_messages.verify(request, response, self)
         self.assertIs(callback.future(), response_future)
+        self.assertIsNone(response_future.exception())
+        self.assertIsNone(response_future.traceback())
 
   def testSuccessfulUnaryRequestStreamResponse(self):
     for (group, method), test_messages_sequence in (
@@ -191,6 +194,8 @@
 
         test_messages.verify(requests, response, self)
         self.assertIs(future_passed_to_callback, response_future)
+        self.assertIsNone(response_future.exception())
+        self.assertIsNone(response_future.traceback())
 
   def testSuccessfulStreamRequestStreamResponse(self):
     for (group, method), test_messages_sequence in (
@@ -301,6 +306,12 @@
         self.assertIs(callback.future(), response_future)
         self.assertFalse(cancel_method_return_value)
         self.assertTrue(response_future.cancelled())
+        with self.assertRaises(future.CancelledError):
+          response_future.result()
+        with self.assertRaises(future.CancelledError):
+          response_future.exception()
+        with self.assertRaises(future.CancelledError):
+          response_future.traceback()
 
   def testCancelledUnaryRequestStreamResponse(self):
     for (group, method), test_messages_sequence in (
@@ -332,6 +343,12 @@
         self.assertIs(callback.future(), response_future)
         self.assertFalse(cancel_method_return_value)
         self.assertTrue(response_future.cancelled())
+        with self.assertRaises(future.CancelledError):
+          response_future.result()
+        with self.assertRaises(future.CancelledError):
+          response_future.exception()
+        with self.assertRaises(future.CancelledError):
+          response_future.traceback()
 
   def testCancelledStreamRequestStreamResponse(self):
     for (group, method), test_messages_sequence in (
@@ -363,6 +380,9 @@
               response_future.exception(), face.ExpirationError)
           with self.assertRaises(face.ExpirationError):
             response_future.result()
+          self.assertIsInstance(
+              response_future.exception(), face.AbortionError)
+          self.assertIsNotNone(response_future.traceback())
 
   def testExpiredUnaryRequestStreamResponse(self):
     for (group, method), test_messages_sequence in (
@@ -392,6 +412,9 @@
               response_future.exception(), face.ExpirationError)
           with self.assertRaises(face.ExpirationError):
             response_future.result()
+          self.assertIsInstance(
+              response_future.exception(), face.AbortionError)
+          self.assertIsNotNone(response_future.traceback())
 
   def testExpiredStreamRequestStreamResponse(self):
     for (group, method), test_messages_sequence in (
@@ -426,6 +449,7 @@
               response_future.exception(), face.ExpirationError)
           with self.assertRaises(face.ExpirationError):
             response_future.result()
+          self.assertIsNotNone(response_future.traceback())
 
   def testFailedUnaryRequestStreamResponse(self):
     for (group, method), test_messages_sequence in (
@@ -463,6 +487,7 @@
               response_future.exception(), face.ExpirationError)
           with self.assertRaises(face.ExpirationError):
             response_future.result()
+          self.assertIsNotNone(response_future.traceback())
 
   def testFailedStreamRequestStreamResponse(self):
     for (group, method), test_messages_sequence in (
diff --git a/src/python/grpcio_tests/tests/unit/test_common.py b/src/python/grpcio_tests/tests/unit/test_common.py
index c8886bf..cd71bd8 100644
--- a/src/python/grpcio_tests/tests/unit/test_common.py
+++ b/src/python/grpcio_tests/tests/unit/test_common.py
@@ -31,6 +31,7 @@
 
 import collections
 
+import grpc
 import six
 
 INVOCATION_INITIAL_METADATA = (('0', 'abc'), ('1', 'def'), ('2', 'ghi'),)
@@ -78,3 +79,24 @@
       return False
   else:
     return True
+
+
+def test_secure_channel(
+    target, channel_credentials, server_host_override):
+  """Creates an insecure Channel to a remote host.
+
+  Args:
+    host: The name of the remote host to which to connect.
+    port: The port of the remote host to which to connect.
+    channel_credentials: The implementations.ChannelCredentials with which to
+      connect.
+    server_host_override: The target name used for SSL host name checking.
+
+  Returns:
+    An implementations.Channel to the remote host through which RPCs may be
+      conducted.
+  """
+  channel = grpc.secure_channel(
+      target, channel_credentials,
+      (('grpc.ssl_target_name_override', server_host_override,),))
+  return channel
diff --git a/src/ruby/ext/grpc/rb_call.c b/src/ruby/ext/grpc/rb_call.c
index f62397e..2126124 100644
--- a/src/ruby/ext/grpc/rb_call.c
+++ b/src/ruby/ext/grpc/rb_call.c
@@ -71,6 +71,10 @@
  * received by the call and subsequently saved on it. */
 static ID id_metadata;
 
+/* id_trailing_metadata is the name of the attribute used to access the trailing
+ * metadata hash received by the call and subsequently saved on it. */
+static ID id_trailing_metadata;
+
 /* id_status is name of the attribute used to access the status object
  * received by the call and subsequently saved on it. */
 static ID id_status;
@@ -298,6 +302,30 @@
 
 /*
   call-seq:
+  trailing_metadata = call.trailing_metadata
+
+  Gets the trailing metadata object saved on the call */
+static VALUE grpc_rb_call_get_trailing_metadata(VALUE self) {
+  return rb_ivar_get(self, id_trailing_metadata);
+}
+
+/*
+  call-seq:
+  call.trailing_metadata = trailing_metadata
+
+  Saves the trailing metadata hash on the call. */
+static VALUE grpc_rb_call_set_trailing_metadata(VALUE self, VALUE metadata) {
+  if (!NIL_P(metadata) && TYPE(metadata) != T_HASH) {
+    rb_raise(rb_eTypeError, "bad metadata: got:<%s> want: <Hash>",
+             rb_obj_classname(metadata));
+    return Qnil;
+  }
+
+  return rb_ivar_set(self, id_trailing_metadata, metadata);
+}
+
+/*
+  call-seq:
   write_flag = call.write_flag
 
   Gets the write_flag value saved the call.  */
@@ -908,6 +936,10 @@
   rb_define_method(grpc_rb_cCall, "status=", grpc_rb_call_set_status, 1);
   rb_define_method(grpc_rb_cCall, "metadata", grpc_rb_call_get_metadata, 0);
   rb_define_method(grpc_rb_cCall, "metadata=", grpc_rb_call_set_metadata, 1);
+  rb_define_method(grpc_rb_cCall, "trailing_metadata",
+                   grpc_rb_call_get_trailing_metadata, 0);
+  rb_define_method(grpc_rb_cCall, "trailing_metadata=",
+                   grpc_rb_call_set_trailing_metadata, 1);
   rb_define_method(grpc_rb_cCall, "write_flag", grpc_rb_call_get_write_flag, 0);
   rb_define_method(grpc_rb_cCall, "write_flag=", grpc_rb_call_set_write_flag,
                    1);
@@ -916,6 +948,7 @@
 
   /* Ids used to support call attributes */
   id_metadata = rb_intern("metadata");
+  id_trailing_metadata = rb_intern("trailing_metadata");
   id_status = rb_intern("status");
   id_write_flag = rb_intern("write_flag");
 
diff --git a/src/ruby/lib/grpc/generic/active_call.rb b/src/ruby/lib/grpc/generic/active_call.rb
index 6e411a2..4260d85 100644
--- a/src/ruby/lib/grpc/generic/active_call.rb
+++ b/src/ruby/lib/grpc/generic/active_call.rb
@@ -43,8 +43,7 @@
         GRPC.logger.debug("Failing with status #{status}")
         # raise BadStatus, propagating the metadata if present.
         md = status.metadata
-        with_sym_keys = Hash[md.each_pair.collect { |x, y| [x.to_sym, y] }]
-        fail GRPC::BadStatus.new(status.code, status.details, with_sym_keys)
+        fail GRPC::BadStatus.new(status.code, status.details, md)
       end
       status
     end
@@ -61,7 +60,7 @@
     extend Forwardable
     attr_reader(:deadline)
     def_delegators :@call, :cancel, :metadata, :write_flag, :write_flag=,
-                   :peer, :peer_cert
+                   :peer, :peer_cert, :trailing_metadata
 
     # client_invoke begins a client invocation.
     #
@@ -158,6 +157,9 @@
       ops[RECV_STATUS_ON_CLIENT] = nil if assert_finished
       batch_result = @call.run_batch(ops)
       return unless assert_finished
+      unless batch_result.status.nil?
+        @call.trailing_metadata = batch_result.status.metadata
+      end
       @call.status = batch_result.status
       op_is_done
       batch_result.check_status
@@ -169,11 +171,7 @@
     def finished
       batch_result = @call.run_batch(RECV_STATUS_ON_CLIENT => nil)
       unless batch_result.status.nil?
-        if @call.metadata.nil?
-          @call.metadata = batch_result.status.metadata
-        else
-          @call.metadata.merge!(batch_result.status.metadata)
-        end
+        @call.trailing_metadata = batch_result.status.metadata
       end
       @call.status = batch_result.status
       op_is_done
@@ -467,6 +465,6 @@
     # a Operation on the client.
     Operation = view_class(:cancel, :cancelled?, :deadline, :execute,
                            :metadata, :status, :start_call, :wait, :write_flag,
-                           :write_flag=)
+                           :write_flag=, :trailing_metadata)
   end
 end
diff --git a/src/ruby/spec/generic/rpc_server_spec.rb b/src/ruby/spec/generic/rpc_server_spec.rb
index 901c84f..31157cf 100644
--- a/src/ruby/spec/generic/rpc_server_spec.rb
+++ b/src/ruby/spec/generic/rpc_server_spec.rb
@@ -95,7 +95,7 @@
   def initialize(_default_var = 'ignored')
     @details = 'app error'
     @code = 101
-    @md = { failed_method: 'an_rpc' }
+    @md = { 'failed_method' => 'an_rpc' }
   end
 
   def an_rpc(_req, _call)
@@ -515,7 +515,7 @@
         op = stub.an_rpc(req, return_op: true, metadata: { k1: 'v1', k2: 'v2' })
         expect(op.metadata).to be nil
         expect(op.execute).to be_a(EchoMsg)
-        expect(op.metadata).to eq(wanted_trailers)
+        expect(op.trailing_metadata).to eq(wanted_trailers)
         @srv.stop
         t.join
       end
diff --git a/templates/package.json.template b/templates/package.json.template
index 9d19ca0..f68f64d 100644
--- a/templates/package.json.template
+++ b/templates/package.json.template
@@ -61,7 +61,6 @@
     "files": [
       "LICENSE",
       "src/node/README.md",
-      "src/node/health_check",
       "src/proto",
       "etc",
       "src/node/index.js",
diff --git a/templates/src/node/health_check/package.json.template b/templates/src/node/health_check/package.json.template
new file mode 100644
index 0000000..1248ced
--- /dev/null
+++ b/templates/src/node/health_check/package.json.template
@@ -0,0 +1,31 @@
+%YAML 1.2
+--- |
+  {
+    "name": "grpc-health-check",
+    "version": "${settings.node_version}",
+    "author": "Google Inc.",
+    "description": "Health check service for use with gRPC",
+    "repository": {
+      "type": "git",
+      "url": "https://github.com/grpc/grpc.git"
+    },
+    "bugs": "https://github.com/grpc/grpc/issues",
+    "contributors": [
+      {
+        "name": "Michael Lumish",
+        "email": "mlumish@google.com"
+      }
+    ],
+    "dependencies": {
+      "grpc": "^0.15.0",
+      "lodash": "^3.9.3",
+      "google-protobuf": "^3.0.0-alpha.5"
+    },
+    "files": {
+      "LICENSE",
+      "health.js",
+      "v1"
+    },
+    "main": "src/node/index.js",
+    "license": "BSD-3-Clause"
+  }
diff --git a/templates/src/python/grpcio/grpc/_cython/imports.generated.c.template b/templates/src/python/grpcio/grpc/_cython/imports.generated.c.template
index 84fa5e6..d83bcca 100644
--- a/templates/src/python/grpcio/grpc/_cython/imports.generated.c.template
+++ b/templates/src/python/grpcio/grpc/_cython/imports.generated.c.template
@@ -33,29 +33,9 @@
    *
    */
 
+  /* TODO(atash) remove cruft */
   #include <grpc/support/port_platform.h>
 
   #include "imports.generated.h"
 
-  #ifdef GPR_WINDOWS
-
-  %for api in c_apis:
-  ${api.name}_type ${api.name}_import;
-  %endfor
-
-  #ifdef __cplusplus
-  extern "C" {
-  #endif  /* __cpluslus */
-
-  void pygrpc_load_imports(HMODULE library) {
-  %for api in c_apis:
-    ${api.name}_import = (${api.name}_type) GetProcAddress(library, "${api.name}");
-  %endfor
-  }
-
-  #ifdef __cplusplus
-  }
-  #endif  /* __cpluslus */
-
-  #endif /* !GPR_WINDOWS */
 
diff --git a/templates/src/python/grpcio/grpc/_cython/imports.generated.h.template b/templates/src/python/grpcio/grpc/_cython/imports.generated.h.template
index d0f60dc..b85bc3d 100644
--- a/templates/src/python/grpcio/grpc/_cython/imports.generated.h.template
+++ b/templates/src/python/grpcio/grpc/_cython/imports.generated.h.template
@@ -33,37 +33,12 @@
    *
    */
 
+  /* TODO(atash) remove cruft */
   #ifndef PYGRPC_CYTHON_WINDOWS_IMPORTS_H_
   #define PYGRPC_CYTHON_WINDOWS_IMPORTS_H_
 
   #include <grpc/support/port_platform.h>
 
-  #ifdef GPR_WINDOWS
-
-  #include <windows.h>
-
-  %for header in sorted(set(api.header for api in c_apis)):
-  #include <${'/'.join(header.split('/')[1:])}>
-  %endfor
-
-  %for api in c_apis:
-  typedef ${api.return_type}(*${api.name}_type)(${api.arguments});
-  extern ${api.name}_type ${api.name}_import;
-  #define ${api.name} ${api.name}_import
-  %endfor
-
-  #ifdef __cplusplus
-  extern "C" {
-  #endif  /* __cpluslus */
-
-  void pygrpc_load_imports(HMODULE library);
-
-  #ifdef __cplusplus
-  }
-  #endif  /* __cpluslus */
-
-  #else /* !GPR_WINDOWS */
-
   #include <grpc/byte_buffer.h>
   #include <grpc/byte_buffer_reader.h>
   #include <grpc/compression.h>
@@ -74,6 +49,4 @@
   #include <grpc/support/time.h>
   #include <grpc/status.h>
 
-  #endif /* !GPR_WINDOWS */
-
   #endif
diff --git a/test/cpp/interop/metrics_client.cc b/test/cpp/interop/metrics_client.cc
index 7a0cb99..179de30 100644
--- a/test/cpp/interop/metrics_client.cc
+++ b/test/cpp/interop/metrics_client.cc
@@ -56,6 +56,9 @@
 using grpc::testing::MetricsService;
 using grpc::testing::MetricsServiceImpl;
 
+// Do not log anything
+void BlackholeLogger(gpr_log_func_args* args) {}
+
 // Prints the values of all Gauges (unless total_only is set to 'true' in which
 // case this only prints the sum of all gauge values).
 bool PrintMetrics(std::unique_ptr<MetricsService::Stub> stub, bool total_only,
@@ -76,21 +79,21 @@
   while (reader->Read(&gauge_response)) {
     if (gauge_response.value_case() == GaugeResponse::kLongValue) {
       if (!total_only) {
-        gpr_log(GPR_INFO, "%s: %lld", gauge_response.name().c_str(),
-                gauge_response.long_value());
+        std::cout << gauge_response.name() << ": "
+                  << gauge_response.long_value() << std::endl;
       }
       overall_qps += gauge_response.long_value();
     } else {
-      gpr_log(GPR_INFO, "Gauge %s is not a long value",
-              gauge_response.name().c_str());
+      std::cout << "Gauge '" << gauge_response.name() << "' is not long valued"
+                << std::endl;
     }
   }
 
-  gpr_log(GPR_INFO, "%ld", overall_qps);
+  std::cout << overall_qps << std::endl;
 
   const grpc::Status status = reader->Finish();
   if (!status.ok()) {
-    gpr_log(GPR_ERROR, "Error in getting metrics from the client");
+    std::cout << "Error in getting metrics from the client" << std::endl;
   }
 
   return status.ok();
@@ -99,14 +102,10 @@
 int main(int argc, char** argv) {
   grpc::testing::InitTest(&argc, &argv, true);
 
-  // Make sure server_addresses flag is not empty
-  if (FLAGS_metrics_server_address.empty()) {
-    gpr_log(
-        GPR_ERROR,
-        "Cannot connect to the Metrics server. Please pass the address of the"
-        "metrics server to connect to via the 'metrics_server_address' flag");
-    return 1;
-  }
+  // The output of metrics client is in some cases programatically parsed (for
+  // example by the stress test framework). So, we do not want any of the log
+  // from the grpc library appearing on stdout.
+  gpr_set_log_function(BlackholeLogger);
 
   std::shared_ptr<grpc::Channel> channel(grpc::CreateChannel(
       FLAGS_metrics_server_address, grpc::InsecureChannelCredentials()));
diff --git a/tools/distrib/python/grpcio_tools/setup.py b/tools/distrib/python/grpcio_tools/setup.py
index afb6063..e025158 100644
--- a/tools/distrib/python/grpcio_tools/setup.py
+++ b/tools/distrib/python/grpcio_tools/setup.py
@@ -32,6 +32,7 @@
 import os
 import os.path
 import pkg_resources
+import platform
 import shlex
 import shutil
 import sys
@@ -45,6 +46,9 @@
 os.chdir(os.path.dirname(os.path.abspath(__file__)))
 sys.path.insert(0, os.path.abspath('.'))
 
+import protoc_lib_deps
+import grpc_version
+
 PY3 = sys.version_info.major == 3
 
 # There are some situations (like on Windows) where CC, CFLAGS, and LDFLAGS are
@@ -60,8 +64,9 @@
 GRPC_PYTHON_TOOLS_PACKAGE = 'grpc.tools'
 GRPC_PYTHON_PROTO_RESOURCES_NAME = '_proto'
 
-import protoc_lib_deps
-import grpc_version
+DEFINE_MACROS = (('HAVE_PTHREAD', 1),)
+if "win32" in sys.platform and '64bit' in platform.architecture()[0]:
+  DEFINE_MACROS += (('MS_WIN64', 1),)
 
 # By default, Python3 distutils enforces compatibility of
 # c plugins (.so files) with the OSX version Python3 was built with.
@@ -108,9 +113,9 @@
           protoc_lib_deps.CC_INCLUDE,
       ],
       language='c++',
-      define_macros=[('HAVE_PTHREAD', 1)],
-      extra_compile_args=EXTRA_COMPILE_ARGS,
-      extra_link_args=EXTRA_LINK_ARGS,
+      define_macros=list(DEFINE_MACROS),
+      extra_compile_args=list(EXTRA_COMPILE_ARGS),
+      extra_link_args=list(EXTRA_LINK_ARGS),
   )
   return plugin_ext
 
diff --git a/tools/run_tests/build_artifact_python.bat b/tools/run_tests/build_artifact_python.bat
index 295347e..7c8c2aa 100644
--- a/tools/run_tests/build_artifact_python.bat
+++ b/tools/run_tests/build_artifact_python.bat
@@ -28,33 +28,24 @@
 @rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
-set NUGET=C:\nuget\nuget.exe
-%NUGET% restore vsprojects\grpc.sln || goto :error
-
-
-@call vsprojects\build_vs2013.bat vsprojects\grpc.sln /t:grpc_dll /p:Configuration=Release /p:PlatformToolset=v120 /p:Platform=Win32 || goto :error
-@call vsprojects\build_vs2013.bat vsprojects\grpc.sln /t:grpc_dll /p:Configuration=Release /p:PlatformToolset=v120 /p:Platform=x64   || goto :error
-
-mkdir src\python\grpcio\grpc\_cython\_windows
-
-@rem TODO(atash): maybe we could avoid the grpc_c.(32|64).python shim below if
-@rem this used the right python build?
-copy /Y vsprojects\Release\grpc_dll.dll src\python\grpcio\grpc\_cython\_windows\grpc_c.32.python || goto :error
-copy /Y vsprojects\x64\Release\grpc_dll.dll src\python\grpcio\grpc\_cython\_windows\grpc_c.64.python || goto :error
-
 set PATH=C:\%1;C:\%1\scripts;C:\msys64\mingw%2\bin;%PATH%
 
 pip install --upgrade six
 pip install --upgrade setuptools
 pip install -rrequirements.txt
 
-set GRPC_PYTHON_USE_CUSTOM_BDIST=0
-set GRPC_PYTHON_BUILD_WITH_CYTHON=1
-
 @rem Because this is windows and *everything seems to hate Windows* we have to
 @rem set all of these flags ourselves because Python won't help us (see the
 @rem setup.py of the grpcio_tools project).
 set GRPC_PYTHON_CFLAGS=-fno-wrapv -frtti -std=c++11
+
+@rem See https://sourceforge.net/p/mingw-w64/bugs/363/
+if %2 == 32 (
+  set GRPC_PYTHON_CFLAGS=%GRPC_PYTHON_CFLAGS% -D_ftime=_ftime32 -D_timeb=__timeb32 -D_ftime_s=_ftime32_s
+) else (
+  set GRPC_PYTHON_CFLAGS=%GRPC_PYTHON_CFLAGS% -D_ftime=_ftime64 -D_timeb=__timeb64
+)
+
 @rem Further confusing things, MSYS2's mingw64 tries to dynamically link
 @rem libgcc, libstdc++, and winpthreads. We have to override this or our
 @rem extensions end up linking to MSYS2 DLLs, which the normal Python on
@@ -66,23 +57,18 @@
 set /p PYTHON_MSVCR=<temp.txt
 set GRPC_PYTHON_LDFLAGS=-static-libgcc -static-libstdc++ -mcrtdll=%PYTHON_MSVCR% -static -lpthread
 
-
-@rem Build gRPC
-if %2 == 32 (
-  python setup.py build_ext -c mingw32
-) else (
-  python setup.py build_ext -c mingw32 -DMS_WIN64
-)
-python setup.py bdist_wheel
+set GRPC_PYTHON_BUILD_WITH_CYTHON=1
 
 
-@rem Build gRPC Python tools
+@rem Set up gRPC Python tools
 python tools\distrib\python\make_grpcio_tools.py
-if %2 == 32 (
-  python tools\distrib\python\grpcio_tools\setup.py build_ext -c mingw32
-) else (
-  python tools\distrib\python\grpcio_tools\setup.py build_ext -c mingw32 -DMS_WIN64
-)
+
+@rem Build gRPC Python extensions
+python setup.py build_ext -c mingw32
+python tools\distrib\python\grpcio_tools\setup.py build_ext -c mingw32
+
+@rem Build gRPC Python distributions
+python setup.py bdist_wheel
 python tools\distrib\python\grpcio_tools\setup.py bdist_wheel
 
 mkdir artifacts
diff --git a/tools/run_tests/build_python.sh b/tools/run_tests/build_python.sh
index 687b04e..a3fa820 100755
--- a/tools/run_tests/build_python.sh
+++ b/tools/run_tests/build_python.sh
@@ -33,25 +33,91 @@
 # change to grpc repo root
 cd $(dirname $0)/../..
 
-# Arguments
+##########################
+# Portability operations #
+##########################
+
+PLATFORM=`uname -s`
+
+function is_mingw() {
+  if [ "${PLATFORM/MINGW}" != "$PLATFORM" ]; then
+    echo true
+  else
+    exit 1
+  fi
+}
+
+function is_darwin() {
+  if [ "${PLATFORM/Darwin}" != "$PLATFORM" ]; then
+    echo true
+  else
+    exit 1
+  fi
+}
+
+function is_linux() {
+  if [ "${PLATFORM/Linux}" != "$PLATFORM" ]; then
+    echo true
+  else
+    exit 1
+  fi
+}
+
+# Associated virtual environment name for the given python command.
+function venv() {
+  $1 -c "import sys; print('py{}{}'.format(*sys.version_info[:2]))"
+}
+
+# Path to python executable within a virtual environment depending on the
+# system.
+function venv_relative_python() {
+  if [ $(is_mingw) ]; then
+    echo 'Scripts/python.exe'
+  else
+    echo 'bin/python'
+  fi
+}
+
+# Distutils toolchain to use depending on the system.
+function toolchain() {
+  if [ $(is_mingw) ]; then
+    echo 'mingw32'
+  else
+    echo 'unix'
+  fi
+}
+
+# Command to invoke the linux command `realpath` or equivalent.
+function script_realpath() {
+  # Find `realpath`
+  if [ -x "$(command -v realpath)" ]; then
+    realpath "$@"
+  elif [ -x "$(command -v grealpath)" ]; then
+    grealpath "$@"
+  else
+    exit 1
+  fi
+}
+
+####################
+# Script Arguments #
+####################
+
 PYTHON=${1:-python2.7}
-VENV=${2:-py27}
-VENV_RELATIVE_PYTHON=${3:-bin/python}
-TOOLCHAIN=${4:-unix}
+VENV=${2:-$(venv $PYTHON)}
+VENV_RELATIVE_PYTHON=${3:-$(venv_relative_python)}
+TOOLCHAIN=${4:-$(toolchain)}
 
 ROOT=`pwd`
-export CFLAGS="-I$ROOT/include -std=gnu99 -fno-wrapv"
+export CFLAGS="-I$ROOT/include -std=gnu99 -fno-wrapv $CFLAGS"
 export GRPC_PYTHON_BUILD_WITH_CYTHON=1
 
 # Default python on the host to fall back to when instantiating e.g. the
 # virtualenv.
 HOST_PYTHON=${HOST_PYTHON:-python}
 
-# If ccache is available, use it... unless we're on Mac, then all hell breaks
-# loose because Python does hacky things to support other hacky things done to
-# hacky things on Mac OS X
-PLATFORM=`uname -s`
-if [ "${PLATFORM/Darwin}" = "$PLATFORM" ]; then
+# If ccache is available on Linux, use it.
+if [ $(is_linux) ]; then
   # We're not on Darwin (Mac OS X)
   if [ -x "$(command -v ccache)" ]; then
     if [ -x "$(command -v gcc)" ]; then
@@ -61,17 +127,24 @@
     fi
   fi
 fi
-
-# Find `realpath`
-if [ -x "$(command -v realpath)" ]; then
-  export REALPATH=realpath
-elif [ -x "$(command -v grealpath)" ]; then
-  export REALPATH=grealpath
-else
-  echo 'Couldn'"'"'t find `realpath` or `grealpath`'
-  exit 1
+# TODO(atash) consider conceptualizing MinGW as a first-class platform and move
+# these flags into our `setup.py`s
+if [ $(is_mingw) ]; then
+  # We're on MinGW, and our CFLAGS and LDFLAGS will be eaten by the void. Use
+  # our work-around environment variables instead.
+  PYTHON_MSVCR=`$PYTHON -c "from distutils.cygwinccompiler import get_msvcr; print(get_msvcr()[0])"`
+  export GRPC_PYTHON_LDFLAGS="-static-libgcc -static-libstdc++ -mcrtdll=$PYTHON_MSVCR -static -lpthread"
+  # See https://sourceforge.net/p/mingw-w64/bugs/363/
+  export GRPC_PYTHON_CFLAGS="-D_ftime=_ftime64 -D_timeb=__timeb64"
+  # TODO(atash) set these flags for only grpcio-tools (they don't do any harm to
+  # grpcio, but they result in noisy warnings).
+  export GRPC_PYTHON_CFLAGS="-frtti -std=c++11 $GRPC_PYTHON_CFLAGS"
 fi
 
+############################
+# Perform build operations #
+############################
+
 # Instnatiate the virtualenv, preferring to do so from the relevant python
 # version. Even if these commands fail (e.g. on Windows due to name conflicts)
 # it's possible that the virtualenv is still usable and we trust the tester to
@@ -80,7 +153,7 @@
 ($PYTHON -m virtualenv $VENV ||
  $HOST_PYTHON -m virtualenv -p $PYTHON $VENV ||
  true)
-VENV_PYTHON=`$REALPATH -s "$VENV/$VENV_RELATIVE_PYTHON"`
+VENV_PYTHON=`script_realpath -s "$VENV/$VENV_RELATIVE_PYTHON"`
 
 # pip-installs the directory specified. Used because on MSYS the vanilla Windows
 # Python gets confused when parsing paths.
diff --git a/tools/run_tests/build_python_msys2.sh b/tools/run_tests/build_python_msys2.sh
new file mode 100644
index 0000000..6e9d369
--- /dev/null
+++ b/tools/run_tests/build_python_msys2.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+set -ex
+
+BUILD_PYTHON=`realpath "$(dirname $0)/build_python.sh"`
+export MSYSTEM=$1
+shift 1
+bash --login $BUILD_PYTHON "$@"
diff --git a/tools/run_tests/jobset.py b/tools/run_tests/jobset.py
index 4fe7748..3999537 100755
--- a/tools/run_tests/jobset.py
+++ b/tools/run_tests/jobset.py
@@ -47,6 +47,12 @@
 _DEFAULT_MAX_JOBS = 16 * multiprocessing.cpu_count()
 _MAX_RESULT_SIZE = 8192
 
+def sanitized_environment(env):
+  sanitized = {}
+  for key, value in env.items():
+    sanitized[str(key).encode()] = str(value).encode()
+  return sanitized
+
 def platform_string():
   if platform.system() == 'Windows':
     return 'windows'
@@ -219,6 +225,7 @@
     env = dict(os.environ)
     env.update(self._spec.environ)
     env.update(self._add_env)
+    env = sanitized_environment(env)
     self._start = time.time()
     cmdline = self._spec.cmdline
     if measure_cpu_costs:
diff --git a/tools/run_tests/performance/run_worker_python.sh b/tools/run_tests/performance/run_worker_python.sh
index 3b8ba6f..06cf172 100755
--- a/tools/run_tests/performance/run_worker_python.sh
+++ b/tools/run_tests/performance/run_worker_python.sh
@@ -32,4 +32,4 @@
 
 cd $(dirname $0)/../../..
 
-PYTHONPATH=src/python/grpcio_tests:src/python/grpcio:src/python/gens py27/bin/python src/python/grpcio_tests/tests/qps/qps_worker.py $@
+PYTHONPATH=src/python/grpcio_tests:src/python/gens py27/bin/python src/python/grpcio_tests/tests/qps/qps_worker.py $@
diff --git a/tools/run_tests/performance/scenario_config.py b/tools/run_tests/performance/scenario_config.py
index 2d5130e..4dfd01f 100644
--- a/tools/run_tests/performance/scenario_config.py
+++ b/tools/run_tests/performance/scenario_config.py
@@ -387,45 +387,44 @@
     return 500
 
   def scenarios(self):
-    # TODO(issue #6522): Empty streaming requests does not work for python
-    #yield _ping_pong_scenario(
-    #    'python_generic_async_streaming_ping_pong', rpc_type='STREAMING',
-    #    client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
-    #    use_generic_payload=True,
-    #    categories=[SMOKETEST])
+    yield _ping_pong_scenario(
+        'python_generic_sync_streaming_ping_pong', rpc_type='STREAMING',
+        client_type='SYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+        use_generic_payload=True,
+        categories=[SMOKETEST])
 
     yield _ping_pong_scenario(
         'python_protobuf_sync_streaming_ping_pong', rpc_type='STREAMING',
-        client_type='SYNC_CLIENT', server_type='SYNC_SERVER')
+        client_type='SYNC_CLIENT', server_type='ASYNC_SERVER')
 
     yield _ping_pong_scenario(
         'python_protobuf_async_unary_ping_pong', rpc_type='UNARY',
-        client_type='ASYNC_CLIENT', server_type='SYNC_SERVER')
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER')
 
     yield _ping_pong_scenario(
         'python_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
-        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        client_type='SYNC_CLIENT', server_type='ASYNC_SERVER',
         categories=[SMOKETEST])
 
     yield _ping_pong_scenario(
         'python_protobuf_sync_unary_qps_unconstrained', rpc_type='UNARY',
-        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        client_type='SYNC_CLIENT', server_type='ASYNC_SERVER',
         unconstrained_client='sync')
 
     yield _ping_pong_scenario(
         'python_protobuf_sync_streaming_qps_unconstrained', rpc_type='STREAMING',
-        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        client_type='SYNC_CLIENT', server_type='ASYNC_SERVER',
         unconstrained_client='sync')
 
     yield _ping_pong_scenario(
         'python_to_cpp_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
-        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        client_type='SYNC_CLIENT', server_type='ASYNC_SERVER',
         server_language='c++', server_core_limit=1, async_server_threads=1,
         categories=[SMOKETEST])
 
     yield _ping_pong_scenario(
         'python_to_cpp_protobuf_sync_streaming_ping_pong', rpc_type='STREAMING',
-        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        client_type='SYNC_CLIENT', server_type='ASYNC_SERVER',
         server_language='c++', server_core_limit=1, async_server_threads=1)
 
   def __str__(self):
diff --git a/tools/run_tests/port_server.py b/tools/run_tests/port_server.py
index e2be26d..83f8e6c 100755
--- a/tools/run_tests/port_server.py
+++ b/tools/run_tests/port_server.py
@@ -42,7 +42,7 @@
 # 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 = 8
+_MY_VERSION = 9
 
 
 if len(sys.argv) == 2 and sys.argv[1] == 'dump_version':
@@ -110,6 +110,11 @@
 
 
 class Handler(BaseHTTPServer.BaseHTTPRequestHandler):
+  
+  def setup(self):
+    # If the client is unreachable for 5 seconds, close the connection
+    self.timeout = 5
+    BaseHTTPServer.BaseHTTPRequestHandler.setup(self)
 
   def do_GET(self):
     global keep_running
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index cbe17ee..b0e2069 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -375,19 +375,15 @@
 
 
 class PythonConfig(collections.namedtuple('PythonConfig', [
-    'python', 'venv', 'venv_relative_python', 'toolchain',])):
-
-  @property
-  def venv_python(self):
-    return os.path.abspath('{}/{}'.format(self.venv, self.venv_relative_python))
-
+    'name', 'build', 'run'])):
+  """Tuple of commands (named s.t. 'what it says on the tin' applies)"""
 
 class PythonLanguage(object):
 
   def configure(self, config, args):
     self.config = config
     self.args = args
-    self.pythons = self._get_pythons(self.args.compiler)
+    self.pythons = self._get_pythons(self.args)
 
   def test_specs(self):
     # load list of known test suites
@@ -395,11 +391,11 @@
       tests_json = json.load(tests_json_file)
     environment = dict(_FORCE_ENVIRON_FOR_WRAPPERS)
     return [self.config.job_spec(
-        ['tools/run_tests/run_python.sh', config.venv_python],
+        config.run,
         timeout_seconds=5*60,
         environ=dict(environment.items() +
                      [('GRPC_PYTHON_TESTRUNNER_FILTER', suite_name)]),
-        shortname='%s.test.%s' % (config.venv, suite_name),)
+        shortname='%s.test.%s' % (config.name, suite_name),)
         for suite_name in tests_json
         for config in self.pythons]
 
@@ -413,14 +409,7 @@
     return []
 
   def build_steps(self):
-    return [
-        [
-            'tools/run_tests/build_python.sh',
-            config.python, config.venv,
-            config.venv_relative_python, config.toolchain
-        ]
-        for config in self.pythons
-    ]
+    return [config.build for config in self.pythons]
 
   def post_tests_steps(self):
     return []
@@ -431,23 +420,50 @@
   def dockerfile_dir(self):
     return 'tools/dockerfile/test/python_jessie_%s' % _docker_arch_suffix(self.args.arch)
 
-  def _get_pythons(self, compiler):
-    if os.name == 'nt':
-      venv_relative_python = 'Scripts/python.exe'
-      toolchain = 'mingw32'
+  def _get_pythons(self, args):
+    if args.arch == 'x86':
+      bits = '32'
     else:
-      venv_relative_python = 'bin/python'
-      toolchain = 'unix'
-    python27_config = PythonConfig('python2.7', 'py27', venv_relative_python, toolchain)
-    python34_config = PythonConfig('python3.4', 'py34', venv_relative_python, toolchain)
-    if compiler == 'default':
-      return (python27_config, python34_config,)
-    elif compiler == 'python2.7':
+      bits = '64'
+    if os.name == 'nt':
+      shell = ['bash']
+      builder = [os.path.abspath('tools/run_tests/build_python_msys2.sh')]
+      builder_prefix_arguments = ['MINGW{}'.format(bits)]
+      venv_relative_python = ['Scripts/python.exe']
+      toolchain = ['mingw32']
+      python_pattern_function = lambda major, minor, bits: (
+          '/c/Python{major}{minor}/python.exe'.format(major=major, minor=minor, bits=bits)
+	  if bits == '64' else
+	  '/c/Python{major}{minor}_{bits}bits/python.exe'.format(
+              major=major, minor=minor, bits=bits))
+    else:
+      shell = []
+      builder = [os.path.abspath('tools/run_tests/build_python.sh')]
+      builder_prefix_arguments = []
+      venv_relative_python = ['bin/python']
+      toolchain = ['unix']
+      # Bit-ness is handled by the test machine's environment
+      python_pattern_function = lambda major, minor, bits: 'python{major}.{minor}'.format(major=major, minor=minor)
+    runner = [os.path.abspath('tools/run_tests/run_python.sh')]
+    python_config_generator = lambda name, major, minor, bits: PythonConfig(
+        name,
+        shell + builder + builder_prefix_arguments
+	    + [python_pattern_function(major=major, minor=minor, bits=bits)]
+	    + [name] + venv_relative_python + toolchain,
+        shell + runner + [os.path.join(name, venv_relative_python[0])])
+    python27_config = python_config_generator(name='py27', major='2', minor='7', bits=bits)
+    python34_config = python_config_generator(name='py34', major='3', minor='4', bits=bits)
+    if args.compiler == 'default':
+      if os.name == 'nt':
+        return (python27_config,)
+      else:
+        return (python27_config, python34_config,)
+    elif args.compiler == 'python2.7':
       return (python27_config,)
-    elif compiler == 'python3.4':
+    elif args.compiler == 'python3.4':
       return (python34_config,)
     else:
-      raise Exception('Compiler %s not supported.' % compiler)
+      raise Exception('Compiler %s not supported.' % args.compiler)
 
   def __str__(self):
     return 'python'
@@ -1078,10 +1094,6 @@
 
 
 def _start_port_server(port_server_port):
-  # Temporary patch to switch the port_server port
-  # see https://github.com/grpc/grpc/issues/7145
-  _shut_down_legacy_server(32767)
-
   # check if a compatible port server is running
   # if incompatible (version mismatch) ==> start a new one
   # if not running ==> start a new one