diff --git a/.gitmodules b/.gitmodules
index c85a53943a743cb9da64bd301ed46ff73f175adc..ce647f3c455a9a70df81cdb7c535dc9ad6369831 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,7 +4,7 @@
 [submodule "third_party/protobuf"]
 	path = third_party/protobuf
 	url = https://github.com/google/protobuf.git
-	branch = v3.0.0-beta-2
+	branch = 3.0.0-beta-3
 [submodule "third_party/gflags"]
 	path = third_party/gflags
 	url = https://github.com/gflags/gflags.git
diff --git a/.travis.yml b/.travis.yml
index fcdfd8b2bf9f48d73b8fd500ccd3dd313f5a5ac0..7576e076a0b0c6804ede6f55257992f79e9571da 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,9 +39,6 @@ before_install:
   - gem install cocoapods -v '1.0.0'
   - pod --version
   - brew install gflags
-  - pushd third_party/protobuf
-  - git checkout v3.0.0-beta-3
-  - popd
 install:
   - make grpc_objective_c_plugin
   - install bins/opt/grpc_objective_c_plugin /usr/local/bin/protoc-gen-objcgrpc
diff --git a/examples/cpp/helloworld/Makefile b/examples/cpp/helloworld/Makefile
index 780e5e427a7677db21aacfc3f6976ca363e12f1d..b45b3c7ee0c3d0482b499910f54cae6923fb0b13 100644
--- a/examples/cpp/helloworld/Makefile
+++ b/examples/cpp/helloworld/Makefile
@@ -97,7 +97,7 @@ ifneq ($(HAS_VALID_PROTOC),true)
 	@echo "Please install Google protocol buffers 3.0.0 and its compiler."
 	@echo "You can find it here:"
 	@echo
-	@echo "   https://github.com/google/protobuf/releases/tag/v3.0.0-beta-2"
+	@echo "   https://github.com/google/protobuf/releases/tag/v3.0.0-beta-3.3"
 	@echo
 	@echo "Here is what I get when trying to evaluate your version of protoc:"
 	@echo
diff --git a/examples/cpp/route_guide/Makefile b/examples/cpp/route_guide/Makefile
index 11f2a00cc8909b2d4701bdd62e647f81e08cb280..50ecf041f56b6bbdab9da30496ad9344e62d895d 100644
--- a/examples/cpp/route_guide/Makefile
+++ b/examples/cpp/route_guide/Makefile
@@ -86,7 +86,7 @@ ifneq ($(HAS_VALID_PROTOC),true)
 	@echo "Please install Google protocol buffers 3.0.0 and its compiler."
 	@echo "You can find it here:"
 	@echo
-	@echo "   https://github.com/google/protobuf/releases/tag/v3.0.0-beta-2"
+	@echo "   https://github.com/google/protobuf/releases/tag/v3.0.0-beta-3.3"
 	@echo
 	@echo "Here is what I get when trying to evaluate your version of protoc:"
 	@echo
diff --git a/examples/objective-c/auth_sample/Podfile b/examples/objective-c/auth_sample/Podfile
index 7affe08743cb8e80f451c5ad2858bf7558096f63..32157a9dcee33b5e60be7545afe3747840e1ccab 100644
--- a/examples/objective-c/auth_sample/Podfile
+++ b/examples/objective-c/auth_sample/Podfile
@@ -1,9 +1,10 @@
 source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 
-pod 'Protobuf', :path => "../../../third_party/protobuf"
-pod 'BoringSSL', :podspec => "../../../src/objective-c"
-pod 'gRPC', :path => "../../.."
+install! 'cocoapods', :deterministic_uuids => false
+
+# Location of gRPC's repo root relative to this file.
+GRPC_LOCAL_SRC = '../../..'
 
 target 'AuthSample' do
   # Depend on the generated AuthTestService library.
@@ -11,4 +12,35 @@ target 'AuthSample' do
 
   # Depend on Google's OAuth2 library
   pod 'Google/SignIn'
+
+  # Use the local versions of Protobuf, BoringSSL, and gRPC. You don't need any of the following
+  # lines in your application.
+  pod 'Protobuf', :path => "#{GRPC_LOCAL_SRC}/third_party/protobuf"
+
+  pod 'BoringSSL', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c"
+
+  pod 'gRPC', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-Core', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-RxLibrary', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-ProtoRPC',  :path => GRPC_LOCAL_SRC
+end
+
+# This pre_install hook is only needed to use the local version of gRPC-Core. You don't need it in
+# your application.
+pre_install do |installer|
+  # This is the gRPC-Core podspec object, as initialized by its podspec file.
+  grpc_core_spec = installer.pod_targets.find{|t| t.name == 'gRPC-Core'}.root_spec
+
+  # Copied from gRPC-Core.podspec, except for the adjusted src_root:
+  src_root = "$(PODS_ROOT)/../#{GRPC_LOCAL_SRC}"
+  grpc_core_spec.pod_target_xcconfig = {
+    'GRPC_SRC_ROOT' => src_root,
+    'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
+    'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
+    # If we don't set these two settings, `include/grpc/support/time.h` and
+    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # build.
+    'USE_HEADERMAP' => 'NO',
+    'ALWAYS_SEARCH_USER_PATHS' => 'NO',
+  }
 end
diff --git a/examples/objective-c/helloworld/Podfile b/examples/objective-c/helloworld/Podfile
index eebf05470d110cb5a9b2cbadbd0d0a02665094ce..e1bb4ddfd5e49210cf8e59f22f2db0d42fdea21a 100644
--- a/examples/objective-c/helloworld/Podfile
+++ b/examples/objective-c/helloworld/Podfile
@@ -1,11 +1,43 @@
 source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 
-pod 'Protobuf', :path => "../../../third_party/protobuf"
-pod 'BoringSSL', :podspec => "../../../src/objective-c"
-pod 'gRPC', :path => "../../.."
+install! 'cocoapods', :deterministic_uuids => false
+
+# Location of gRPC's repo root relative to this file.
+GRPC_LOCAL_SRC = '../../..'
 
 target 'HelloWorld' do
   # Depend on the generated HelloWorld library.
   pod 'HelloWorld', :path => '.'
+
+  # Use the local versions of Protobuf, BoringSSL, and gRPC. You don't need any of the following
+  # lines in your application.
+  pod 'Protobuf', :path => "#{GRPC_LOCAL_SRC}/third_party/protobuf"
+
+  pod 'BoringSSL', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c"
+
+  pod 'gRPC', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-Core', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-RxLibrary', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-ProtoRPC',  :path => GRPC_LOCAL_SRC
+end
+
+# This pre_install hook is only needed to use the local version of gRPC-Core. You don't need it in
+# your application.
+pre_install do |installer|
+  # This is the gRPC-Core podspec object, as initialized by its podspec file.
+  grpc_core_spec = installer.pod_targets.find{|t| t.name == 'gRPC-Core'}.root_spec
+
+  # Copied from gRPC-Core.podspec, except for the adjusted src_root:
+  src_root = "$(PODS_ROOT)/../#{GRPC_LOCAL_SRC}"
+  grpc_core_spec.pod_target_xcconfig = {
+    'GRPC_SRC_ROOT' => src_root,
+    'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
+    'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
+    # If we don't set these two settings, `include/grpc/support/time.h` and
+    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # build.
+    'USE_HEADERMAP' => 'NO',
+    'ALWAYS_SEARCH_USER_PATHS' => 'NO',
+  }
 end
diff --git a/examples/objective-c/route_guide/Podfile b/examples/objective-c/route_guide/Podfile
index b9f2fefd6d2a0702ab43c80b45a7fc2b3451f506..943f5464d89fd9421ffa35f1ae981c17f2821415 100644
--- a/examples/objective-c/route_guide/Podfile
+++ b/examples/objective-c/route_guide/Podfile
@@ -1,10 +1,43 @@
 source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 
+install! 'cocoapods', :deterministic_uuids => false
+
+# Location of gRPC's repo root relative to this file.
+GRPC_LOCAL_SRC = '../../..'
+
 target 'RouteGuideClient' do
-  pod 'Protobuf', :path => "../../../third_party/protobuf"
-  pod 'BoringSSL', :podspec => "../../../src/objective-c"
-  pod 'gRPC', :path => "../../.."
   # Depend on the generated RouteGuide library.
   pod 'RouteGuide', :path => '.'
+
+  # Use the local versions of Protobuf, BoringSSL, and gRPC. You don't need any of the following
+  # lines in your application.
+  pod 'Protobuf', :path => "#{GRPC_LOCAL_SRC}/third_party/protobuf"
+
+  pod 'BoringSSL', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c"
+
+  pod 'gRPC', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-Core', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-RxLibrary', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-ProtoRPC',  :path => GRPC_LOCAL_SRC
+end
+
+# This pre_install hook is only needed to use the local version of gRPC-Core. You don't need it in
+# your application.
+pre_install do |installer|
+  # This is the gRPC-Core podspec object, as initialized by its podspec file.
+  grpc_core_spec = installer.pod_targets.find{|t| t.name == 'gRPC-Core'}.root_spec
+
+  # Copied from gRPC-Core.podspec, except for the adjusted src_root:
+  src_root = "$(PODS_ROOT)/../#{GRPC_LOCAL_SRC}"
+  grpc_core_spec.pod_target_xcconfig = {
+    'GRPC_SRC_ROOT' => src_root,
+    'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
+    'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
+    # If we don't set these two settings, `include/grpc/support/time.h` and
+    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # build.
+    'USE_HEADERMAP' => 'NO',
+    'ALWAYS_SEARCH_USER_PATHS' => 'NO',
+  }
 end
diff --git a/examples/php/composer.json b/examples/php/composer.json
index c837bf7ac0febe029f3fe41eb641884ff15ba13c..950e11367d0f707fe534bf134aff69fe4ed29272 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 42b58e50217d2710e29a0d210a2159947c56ed79..34224e5c418f58ab54ffb2d1f460d0682274d81b 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 d9d56c2d7ab2a7a98afeeafd4987adf3c8cf2dff..a377a1ab40903920aea3a6e92c7e51ca7166a818 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/gRPC-Core.podspec b/gRPC-Core.podspec
new file mode 100644
index 0000000000000000000000000000000000000000..eeb63f4dddcb80c94d49902a7bef80c540942d30
--- /dev/null
+++ b/gRPC-Core.podspec
@@ -0,0 +1,768 @@
+# GRPC CocoaPods podspec
+# This file has been automatically generated from a template file. Please make modifications to
+# `templates/gRPC-Core.podspec.template` instead. This file can be regenerated from the template by
+# running `tools/buildgen/generate_projects.sh`.
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+Pod::Spec.new do |s|
+  s.name     = 'gRPC-Core'
+  version = '0.14.0'
+  s.version  = version
+  s.summary  = 'Core cross-platform gRPC library, written in C'
+  s.homepage = 'http://www.grpc.io'
+  s.license  = 'New BSD'
+  s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
+
+  s.source = {
+    :git => 'https://github.com/grpc/grpc.git',
+    :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}",
+    # TODO(jcanizales): Depend explicitly on the nanopb pod, and disable submodules.
+    :submodules => true,
+  }
+
+  s.ios.deployment_target = '7.1'
+  s.osx.deployment_target = '10.9'
+  s.requires_arc = false
+
+  name = 'grpc'
+
+  # When creating a dynamic framework, name it grpc.framework instead of gRPC-Core.framework.
+  # This lets users write their includes like `#include <grpc/grpc.h>` as opposed to `#include
+  # <gRPC-Core/grpc.h>`.
+  s.module_name = name
+
+  # When creating a dynamic framework, copy the headers under `include/grpc/` into the root of
+  # the `Headers/` directory of the framework (i.e., not under `Headers/include/grpc`).
+  #
+  # TODO(jcanizales): Debug why this doesn't work on macOS.
+  s.header_mappings_dir = 'include/grpc'
+
+  # The above has an undesired effect when creating a static library: It forces users to write
+  # includes like `#include <gRPC-Core/grpc.h>`. `s.header_dir` adds a path prefix to that, and
+  # because Cocoapods lets omit the pod name when including headers of static libraries, the
+  # following lets users write `#include <grpc/grpc.h>`.
+  s.header_dir = name
+
+  # The module map created automatically by Cocoapods doesn't work for C libraries like gRPC-Core.
+  s.module_map = 'include/grpc/module.modulemap'
+
+  # To compile the library, we need the user headers search path (quoted includes) to point to the
+  # root of the repo, and the system headers search path (angled includes) to point to `include/`.
+  # Cocoapods effectively clones the repo under `<Podfile dir>/Pods/gRPC-Core/`, and sets a build
+  # variable called `$(PODS_ROOT)` to `<Podfile dir>/Pods/`, so we use that.
+  #
+  # Relying on the file structure under $(PODS_ROOT) isn't officially supported in Cocoapods, as it
+  # is taken as an implementation detail. We've asked for an alternative, and have been told that
+  # what we're doing should keep working: https://github.com/CocoaPods/CocoaPods/issues/4386
+  #
+  # The `src_root` value of `$(PODS_ROOT)/gRPC-Core` assumes Cocoapods is installing this pod from
+  # its remote repo. For local development of this library, enabled by using `:path` in the Podfile,
+  # that assumption is wrong. In such case, the following settings need to be reset with the
+  # appropriate value of `src_root`. This can be accomplished in the `pre_install` hook of the
+  # Podfile; see `src/objective-c/tests/Podfile` for an example.
+  src_root = '$(PODS_ROOT)/gRPC-Core'
+  s.pod_target_xcconfig = {
+    'GRPC_SRC_ROOT' => src_root,
+    'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
+    'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
+    # If we don't set these two settings, `include/grpc/support/time.h` and
+    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # build.
+    'USE_HEADERMAP' => 'NO',
+    'ALWAYS_SEARCH_USER_PATHS' => 'NO',
+  }
+
+  # Like many other C libraries, gRPC-Core has its public headers under `include/<libname>/` and its
+  # sources and private headers in other directories outside `include/`. Cocoapods' linter doesn't
+  # allow any header to be listed outside the `header_mappings_dir` (even though doing so works in
+  # practice). Because we need our `header_mappings_dir` to be `include/grpc/` for the reason
+  # mentioned above, we work around the linter limitation by dividing the pod into two subspecs, one
+  # for public headers and the other for implementation. Each gets its own `header_mappings_dir`,
+  # making the linter happy.
+  #
+  # The list of source files is generated by a template: `templates/gRPC-Core.podspec.template`. It
+  # can be regenerated from the template by running `tools/buildgen/generate_projects.sh`.
+  s.subspec 'Interface' do |ss|
+    ss.header_mappings_dir = 'include/grpc'
+
+    ss.source_files = 'include/grpc/support/alloc.h',
+                      'include/grpc/support/atm.h',
+                      'include/grpc/support/atm_gcc_atomic.h',
+                      'include/grpc/support/atm_gcc_sync.h',
+                      'include/grpc/support/atm_windows.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.h',
+                      'include/grpc/support/log_windows.h',
+                      'include/grpc/support/port_platform.h',
+                      'include/grpc/support/slice.h',
+                      'include/grpc/support/slice_buffer.h',
+                      'include/grpc/support/string_util.h',
+                      'include/grpc/support/subprocess.h',
+                      'include/grpc/support/sync.h',
+                      'include/grpc/support/sync_generic.h',
+                      'include/grpc/support/sync_posix.h',
+                      'include/grpc/support/sync_windows.h',
+                      'include/grpc/support/thd.h',
+                      'include/grpc/support/time.h',
+                      'include/grpc/support/tls.h',
+                      'include/grpc/support/tls_gcc.h',
+                      'include/grpc/support/tls_msvc.h',
+                      'include/grpc/support/tls_pthread.h',
+                      'include/grpc/support/useful.h',
+                      'include/grpc/impl/codegen/alloc.h',
+                      'include/grpc/impl/codegen/atm.h',
+                      'include/grpc/impl/codegen/atm_gcc_atomic.h',
+                      'include/grpc/impl/codegen/atm_gcc_sync.h',
+                      'include/grpc/impl/codegen/atm_windows.h',
+                      'include/grpc/impl/codegen/log.h',
+                      'include/grpc/impl/codegen/port_platform.h',
+                      'include/grpc/impl/codegen/slice.h',
+                      'include/grpc/impl/codegen/slice_buffer.h',
+                      'include/grpc/impl/codegen/sync.h',
+                      'include/grpc/impl/codegen/sync_generic.h',
+                      'include/grpc/impl/codegen/sync_posix.h',
+                      'include/grpc/impl/codegen/sync_windows.h',
+                      'include/grpc/impl/codegen/time.h',
+                      'include/grpc/byte_buffer.h',
+                      'include/grpc/byte_buffer_reader.h',
+                      'include/grpc/compression.h',
+                      'include/grpc/grpc.h',
+                      'include/grpc/grpc_posix.h',
+                      'include/grpc/status.h',
+                      'include/grpc/impl/codegen/byte_buffer.h',
+                      'include/grpc/impl/codegen/byte_buffer_reader.h',
+                      'include/grpc/impl/codegen/compression_types.h',
+                      'include/grpc/impl/codegen/connectivity_state.h',
+                      'include/grpc/impl/codegen/grpc_types.h',
+                      'include/grpc/impl/codegen/propagation_bits.h',
+                      'include/grpc/impl/codegen/status.h',
+                      'include/grpc/impl/codegen/alloc.h',
+                      'include/grpc/impl/codegen/atm.h',
+                      'include/grpc/impl/codegen/atm_gcc_atomic.h',
+                      'include/grpc/impl/codegen/atm_gcc_sync.h',
+                      'include/grpc/impl/codegen/atm_windows.h',
+                      'include/grpc/impl/codegen/log.h',
+                      'include/grpc/impl/codegen/port_platform.h',
+                      'include/grpc/impl/codegen/slice.h',
+                      'include/grpc/impl/codegen/slice_buffer.h',
+                      'include/grpc/impl/codegen/sync.h',
+                      'include/grpc/impl/codegen/sync_generic.h',
+                      'include/grpc/impl/codegen/sync_posix.h',
+                      'include/grpc/impl/codegen/sync_windows.h',
+                      'include/grpc/impl/codegen/time.h',
+                      'include/grpc/grpc_security.h',
+                      'include/grpc/grpc_security_constants.h',
+                      'include/grpc/census.h'
+  end
+  s.subspec 'Implementation' do |ss|
+    ss.header_mappings_dir = '.'
+    ss.libraries = 'z'
+    ss.dependency "#{s.name}/Interface", version
+    ss.dependency 'BoringSSL', '~> 4.0'
+
+    # To save you from scrolling, this is the last part of the podspec.
+    ss.source_files = 'src/core/lib/profiling/timers.h',
+                      'src/core/lib/support/backoff.h',
+                      'src/core/lib/support/block_annotate.h',
+                      'src/core/lib/support/env.h',
+                      'src/core/lib/support/mpscq.h',
+                      'src/core/lib/support/murmur_hash.h',
+                      'src/core/lib/support/stack_lockfree.h',
+                      'src/core/lib/support/string.h',
+                      'src/core/lib/support/string_windows.h',
+                      'src/core/lib/support/thd_internal.h',
+                      'src/core/lib/support/time_precise.h',
+                      'src/core/lib/support/tmpfile.h',
+                      'src/core/lib/profiling/basic_timers.c',
+                      'src/core/lib/profiling/stap_timers.c',
+                      'src/core/lib/support/alloc.c',
+                      'src/core/lib/support/avl.c',
+                      'src/core/lib/support/backoff.c',
+                      'src/core/lib/support/cmdline.c',
+                      'src/core/lib/support/cpu_iphone.c',
+                      'src/core/lib/support/cpu_linux.c',
+                      'src/core/lib/support/cpu_posix.c',
+                      'src/core/lib/support/cpu_windows.c',
+                      'src/core/lib/support/env_linux.c',
+                      'src/core/lib/support/env_posix.c',
+                      'src/core/lib/support/env_windows.c',
+                      'src/core/lib/support/histogram.c',
+                      'src/core/lib/support/host_port.c',
+                      'src/core/lib/support/log.c',
+                      'src/core/lib/support/log_android.c',
+                      'src/core/lib/support/log_linux.c',
+                      'src/core/lib/support/log_posix.c',
+                      'src/core/lib/support/log_windows.c',
+                      'src/core/lib/support/mpscq.c',
+                      'src/core/lib/support/murmur_hash.c',
+                      'src/core/lib/support/slice.c',
+                      'src/core/lib/support/slice_buffer.c',
+                      'src/core/lib/support/stack_lockfree.c',
+                      'src/core/lib/support/string.c',
+                      'src/core/lib/support/string_posix.c',
+                      'src/core/lib/support/string_util_windows.c',
+                      'src/core/lib/support/string_windows.c',
+                      'src/core/lib/support/subprocess_posix.c',
+                      'src/core/lib/support/subprocess_windows.c',
+                      'src/core/lib/support/sync.c',
+                      'src/core/lib/support/sync_posix.c',
+                      'src/core/lib/support/sync_windows.c',
+                      'src/core/lib/support/thd.c',
+                      'src/core/lib/support/thd_posix.c',
+                      'src/core/lib/support/thd_windows.c',
+                      'src/core/lib/support/time.c',
+                      'src/core/lib/support/time_posix.c',
+                      'src/core/lib/support/time_precise.c',
+                      'src/core/lib/support/time_windows.c',
+                      'src/core/lib/support/tls_pthread.c',
+                      'src/core/lib/support/tmpfile_msys.c',
+                      'src/core/lib/support/tmpfile_posix.c',
+                      'src/core/lib/support/tmpfile_windows.c',
+                      'src/core/lib/support/wrap_memcpy.c',
+                      'src/core/lib/channel/channel_args.h',
+                      'src/core/lib/channel/channel_stack.h',
+                      'src/core/lib/channel/channel_stack_builder.h',
+                      'src/core/lib/channel/compress_filter.h',
+                      'src/core/lib/channel/connected_channel.h',
+                      'src/core/lib/channel/context.h',
+                      'src/core/lib/channel/http_client_filter.h',
+                      'src/core/lib/channel/http_server_filter.h',
+                      'src/core/lib/compression/algorithm_metadata.h',
+                      'src/core/lib/compression/message_compress.h',
+                      'src/core/lib/debug/trace.h',
+                      'src/core/lib/http/format_request.h',
+                      'src/core/lib/http/httpcli.h',
+                      'src/core/lib/http/parser.h',
+                      'src/core/lib/iomgr/closure.h',
+                      'src/core/lib/iomgr/combiner.h',
+                      'src/core/lib/iomgr/endpoint.h',
+                      'src/core/lib/iomgr/endpoint_pair.h',
+                      'src/core/lib/iomgr/error.h',
+                      'src/core/lib/iomgr/ev_epoll_linux.h',
+                      'src/core/lib/iomgr/ev_poll_and_epoll_posix.h',
+                      'src/core/lib/iomgr/ev_poll_posix.h',
+                      'src/core/lib/iomgr/ev_posix.h',
+                      'src/core/lib/iomgr/exec_ctx.h',
+                      'src/core/lib/iomgr/executor.h',
+                      'src/core/lib/iomgr/iocp_windows.h',
+                      'src/core/lib/iomgr/iomgr.h',
+                      'src/core/lib/iomgr/iomgr_internal.h',
+                      'src/core/lib/iomgr/iomgr_posix.h',
+                      'src/core/lib/iomgr/load_file.h',
+                      'src/core/lib/iomgr/network_status_tracker.h',
+                      'src/core/lib/iomgr/polling_entity.h',
+                      'src/core/lib/iomgr/pollset.h',
+                      'src/core/lib/iomgr/pollset_set.h',
+                      'src/core/lib/iomgr/pollset_set_windows.h',
+                      'src/core/lib/iomgr/pollset_windows.h',
+                      'src/core/lib/iomgr/resolve_address.h',
+                      'src/core/lib/iomgr/sockaddr.h',
+                      'src/core/lib/iomgr/sockaddr_posix.h',
+                      'src/core/lib/iomgr/sockaddr_utils.h',
+                      'src/core/lib/iomgr/sockaddr_windows.h',
+                      'src/core/lib/iomgr/socket_utils_posix.h',
+                      'src/core/lib/iomgr/socket_windows.h',
+                      'src/core/lib/iomgr/tcp_client.h',
+                      'src/core/lib/iomgr/tcp_posix.h',
+                      'src/core/lib/iomgr/tcp_server.h',
+                      'src/core/lib/iomgr/tcp_windows.h',
+                      'src/core/lib/iomgr/time_averaged_stats.h',
+                      'src/core/lib/iomgr/timer.h',
+                      'src/core/lib/iomgr/timer_heap.h',
+                      'src/core/lib/iomgr/udp_server.h',
+                      'src/core/lib/iomgr/unix_sockets_posix.h',
+                      'src/core/lib/iomgr/wakeup_fd_pipe.h',
+                      'src/core/lib/iomgr/wakeup_fd_posix.h',
+                      'src/core/lib/iomgr/workqueue.h',
+                      'src/core/lib/iomgr/workqueue_posix.h',
+                      'src/core/lib/iomgr/workqueue_windows.h',
+                      'src/core/lib/json/json.h',
+                      'src/core/lib/json/json_common.h',
+                      'src/core/lib/json/json_reader.h',
+                      'src/core/lib/json/json_writer.h',
+                      'src/core/lib/surface/api_trace.h',
+                      'src/core/lib/surface/call.h',
+                      'src/core/lib/surface/call_test_only.h',
+                      'src/core/lib/surface/channel.h',
+                      'src/core/lib/surface/channel_init.h',
+                      'src/core/lib/surface/channel_stack_type.h',
+                      'src/core/lib/surface/completion_queue.h',
+                      'src/core/lib/surface/event_string.h',
+                      'src/core/lib/surface/init.h',
+                      'src/core/lib/surface/lame_client.h',
+                      'src/core/lib/surface/server.h',
+                      'src/core/lib/transport/byte_stream.h',
+                      'src/core/lib/transport/connectivity_state.h',
+                      'src/core/lib/transport/metadata.h',
+                      'src/core/lib/transport/metadata_batch.h',
+                      'src/core/lib/transport/static_metadata.h',
+                      'src/core/lib/transport/transport.h',
+                      'src/core/lib/transport/transport_impl.h',
+                      'src/core/ext/transport/chttp2/transport/bin_decoder.h',
+                      'src/core/ext/transport/chttp2/transport/bin_encoder.h',
+                      'src/core/ext/transport/chttp2/transport/chttp2_transport.h',
+                      'src/core/ext/transport/chttp2/transport/frame.h',
+                      'src/core/ext/transport/chttp2/transport/frame_data.h',
+                      'src/core/ext/transport/chttp2/transport/frame_goaway.h',
+                      'src/core/ext/transport/chttp2/transport/frame_ping.h',
+                      'src/core/ext/transport/chttp2/transport/frame_rst_stream.h',
+                      'src/core/ext/transport/chttp2/transport/frame_settings.h',
+                      'src/core/ext/transport/chttp2/transport/frame_window_update.h',
+                      'src/core/ext/transport/chttp2/transport/hpack_encoder.h',
+                      'src/core/ext/transport/chttp2/transport/hpack_parser.h',
+                      'src/core/ext/transport/chttp2/transport/hpack_table.h',
+                      'src/core/ext/transport/chttp2/transport/http2_errors.h',
+                      'src/core/ext/transport/chttp2/transport/huffsyms.h',
+                      'src/core/ext/transport/chttp2/transport/incoming_metadata.h',
+                      'src/core/ext/transport/chttp2/transport/internal.h',
+                      'src/core/ext/transport/chttp2/transport/status_conversion.h',
+                      'src/core/ext/transport/chttp2/transport/stream_map.h',
+                      'src/core/ext/transport/chttp2/transport/timeout_encoding.h',
+                      'src/core/ext/transport/chttp2/transport/varint.h',
+                      'src/core/ext/transport/chttp2/alpn/alpn.h',
+                      'src/core/lib/security/context/security_context.h',
+                      'src/core/lib/security/credentials/composite/composite_credentials.h',
+                      'src/core/lib/security/credentials/credentials.h',
+                      'src/core/lib/security/credentials/fake/fake_credentials.h',
+                      'src/core/lib/security/credentials/google_default/google_default_credentials.h',
+                      'src/core/lib/security/credentials/iam/iam_credentials.h',
+                      'src/core/lib/security/credentials/jwt/json_token.h',
+                      'src/core/lib/security/credentials/jwt/jwt_credentials.h',
+                      'src/core/lib/security/credentials/jwt/jwt_verifier.h',
+                      'src/core/lib/security/credentials/oauth2/oauth2_credentials.h',
+                      'src/core/lib/security/credentials/plugin/plugin_credentials.h',
+                      'src/core/lib/security/credentials/ssl/ssl_credentials.h',
+                      'src/core/lib/security/transport/auth_filters.h',
+                      'src/core/lib/security/transport/handshake.h',
+                      'src/core/lib/security/transport/secure_endpoint.h',
+                      'src/core/lib/security/transport/security_connector.h',
+                      'src/core/lib/security/transport/tsi_error.h',
+                      'src/core/lib/security/util/b64.h',
+                      'src/core/lib/security/util/json_util.h',
+                      'src/core/lib/tsi/fake_transport_security.h',
+                      'src/core/lib/tsi/ssl_transport_security.h',
+                      'src/core/lib/tsi/ssl_types.h',
+                      'src/core/lib/tsi/transport_security.h',
+                      'src/core/lib/tsi/transport_security_interface.h',
+                      'src/core/ext/client_config/client_channel.h',
+                      'src/core/ext/client_config/client_channel_factory.h',
+                      'src/core/ext/client_config/client_config.h',
+                      'src/core/ext/client_config/connector.h',
+                      'src/core/ext/client_config/initial_connect_string.h',
+                      'src/core/ext/client_config/lb_policy.h',
+                      'src/core/ext/client_config/lb_policy_factory.h',
+                      'src/core/ext/client_config/lb_policy_registry.h',
+                      'src/core/ext/client_config/parse_address.h',
+                      'src/core/ext/client_config/resolver.h',
+                      'src/core/ext/client_config/resolver_factory.h',
+                      'src/core/ext/client_config/resolver_registry.h',
+                      'src/core/ext/client_config/subchannel.h',
+                      'src/core/ext/client_config/subchannel_call_holder.h',
+                      'src/core/ext/client_config/subchannel_index.h',
+                      'src/core/ext/client_config/uri_parser.h',
+                      'src/core/ext/lb_policy/grpclb/load_balancer_api.h',
+                      'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h',
+                      'third_party/nanopb/pb.h',
+                      'third_party/nanopb/pb_common.h',
+                      'third_party/nanopb/pb_decode.h',
+                      'third_party/nanopb/pb_encode.h',
+                      'src/core/ext/load_reporting/load_reporting.h',
+                      'src/core/ext/load_reporting/load_reporting_filter.h',
+                      'src/core/ext/census/aggregation.h',
+                      'src/core/ext/census/census_interface.h',
+                      'src/core/ext/census/census_rpc_stats.h',
+                      'src/core/ext/census/gen/census.pb.h',
+                      'src/core/ext/census/grpc_filter.h',
+                      'src/core/ext/census/mlog.h',
+                      'src/core/ext/census/rpc_metric_id.h',
+                      'src/core/lib/surface/init.c',
+                      'src/core/lib/channel/channel_args.c',
+                      'src/core/lib/channel/channel_stack.c',
+                      'src/core/lib/channel/channel_stack_builder.c',
+                      'src/core/lib/channel/compress_filter.c',
+                      'src/core/lib/channel/connected_channel.c',
+                      'src/core/lib/channel/http_client_filter.c',
+                      'src/core/lib/channel/http_server_filter.c',
+                      'src/core/lib/compression/compression.c',
+                      'src/core/lib/compression/message_compress.c',
+                      'src/core/lib/debug/trace.c',
+                      'src/core/lib/http/format_request.c',
+                      'src/core/lib/http/httpcli.c',
+                      'src/core/lib/http/parser.c',
+                      'src/core/lib/iomgr/closure.c',
+                      'src/core/lib/iomgr/combiner.c',
+                      'src/core/lib/iomgr/endpoint.c',
+                      'src/core/lib/iomgr/endpoint_pair_posix.c',
+                      'src/core/lib/iomgr/endpoint_pair_windows.c',
+                      'src/core/lib/iomgr/error.c',
+                      'src/core/lib/iomgr/ev_epoll_linux.c',
+                      'src/core/lib/iomgr/ev_poll_and_epoll_posix.c',
+                      'src/core/lib/iomgr/ev_poll_posix.c',
+                      'src/core/lib/iomgr/ev_posix.c',
+                      'src/core/lib/iomgr/exec_ctx.c',
+                      'src/core/lib/iomgr/executor.c',
+                      'src/core/lib/iomgr/iocp_windows.c',
+                      'src/core/lib/iomgr/iomgr.c',
+                      'src/core/lib/iomgr/iomgr_posix.c',
+                      'src/core/lib/iomgr/iomgr_windows.c',
+                      'src/core/lib/iomgr/load_file.c',
+                      'src/core/lib/iomgr/network_status_tracker.c',
+                      'src/core/lib/iomgr/polling_entity.c',
+                      'src/core/lib/iomgr/pollset_set_windows.c',
+                      'src/core/lib/iomgr/pollset_windows.c',
+                      'src/core/lib/iomgr/resolve_address_posix.c',
+                      'src/core/lib/iomgr/resolve_address_windows.c',
+                      'src/core/lib/iomgr/sockaddr_utils.c',
+                      'src/core/lib/iomgr/socket_utils_common_posix.c',
+                      'src/core/lib/iomgr/socket_utils_linux.c',
+                      'src/core/lib/iomgr/socket_utils_posix.c',
+                      'src/core/lib/iomgr/socket_windows.c',
+                      'src/core/lib/iomgr/tcp_client_posix.c',
+                      'src/core/lib/iomgr/tcp_client_windows.c',
+                      'src/core/lib/iomgr/tcp_posix.c',
+                      'src/core/lib/iomgr/tcp_server_posix.c',
+                      'src/core/lib/iomgr/tcp_server_windows.c',
+                      'src/core/lib/iomgr/tcp_windows.c',
+                      'src/core/lib/iomgr/time_averaged_stats.c',
+                      'src/core/lib/iomgr/timer.c',
+                      'src/core/lib/iomgr/timer_heap.c',
+                      'src/core/lib/iomgr/udp_server.c',
+                      'src/core/lib/iomgr/unix_sockets_posix.c',
+                      'src/core/lib/iomgr/unix_sockets_posix_noop.c',
+                      'src/core/lib/iomgr/wakeup_fd_eventfd.c',
+                      'src/core/lib/iomgr/wakeup_fd_nospecial.c',
+                      'src/core/lib/iomgr/wakeup_fd_pipe.c',
+                      'src/core/lib/iomgr/wakeup_fd_posix.c',
+                      'src/core/lib/iomgr/workqueue_posix.c',
+                      'src/core/lib/iomgr/workqueue_windows.c',
+                      'src/core/lib/json/json.c',
+                      'src/core/lib/json/json_reader.c',
+                      'src/core/lib/json/json_string.c',
+                      'src/core/lib/json/json_writer.c',
+                      'src/core/lib/surface/alarm.c',
+                      'src/core/lib/surface/api_trace.c',
+                      'src/core/lib/surface/byte_buffer.c',
+                      'src/core/lib/surface/byte_buffer_reader.c',
+                      'src/core/lib/surface/call.c',
+                      'src/core/lib/surface/call_details.c',
+                      'src/core/lib/surface/call_log_batch.c',
+                      'src/core/lib/surface/channel.c',
+                      'src/core/lib/surface/channel_init.c',
+                      'src/core/lib/surface/channel_ping.c',
+                      'src/core/lib/surface/channel_stack_type.c',
+                      'src/core/lib/surface/completion_queue.c',
+                      'src/core/lib/surface/event_string.c',
+                      'src/core/lib/surface/lame_client.c',
+                      'src/core/lib/surface/metadata_array.c',
+                      'src/core/lib/surface/server.c',
+                      'src/core/lib/surface/validate_metadata.c',
+                      'src/core/lib/surface/version.c',
+                      'src/core/lib/transport/byte_stream.c',
+                      'src/core/lib/transport/connectivity_state.c',
+                      'src/core/lib/transport/metadata.c',
+                      'src/core/lib/transport/metadata_batch.c',
+                      'src/core/lib/transport/static_metadata.c',
+                      'src/core/lib/transport/transport.c',
+                      'src/core/lib/transport/transport_op_string.c',
+                      'src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c',
+                      'src/core/ext/transport/chttp2/transport/bin_decoder.c',
+                      'src/core/ext/transport/chttp2/transport/bin_encoder.c',
+                      'src/core/ext/transport/chttp2/transport/chttp2_plugin.c',
+                      'src/core/ext/transport/chttp2/transport/chttp2_transport.c',
+                      'src/core/ext/transport/chttp2/transport/frame_data.c',
+                      'src/core/ext/transport/chttp2/transport/frame_goaway.c',
+                      'src/core/ext/transport/chttp2/transport/frame_ping.c',
+                      'src/core/ext/transport/chttp2/transport/frame_rst_stream.c',
+                      'src/core/ext/transport/chttp2/transport/frame_settings.c',
+                      'src/core/ext/transport/chttp2/transport/frame_window_update.c',
+                      'src/core/ext/transport/chttp2/transport/hpack_encoder.c',
+                      'src/core/ext/transport/chttp2/transport/hpack_parser.c',
+                      'src/core/ext/transport/chttp2/transport/hpack_table.c',
+                      'src/core/ext/transport/chttp2/transport/huffsyms.c',
+                      'src/core/ext/transport/chttp2/transport/incoming_metadata.c',
+                      'src/core/ext/transport/chttp2/transport/parsing.c',
+                      'src/core/ext/transport/chttp2/transport/status_conversion.c',
+                      'src/core/ext/transport/chttp2/transport/stream_lists.c',
+                      'src/core/ext/transport/chttp2/transport/stream_map.c',
+                      'src/core/ext/transport/chttp2/transport/timeout_encoding.c',
+                      'src/core/ext/transport/chttp2/transport/varint.c',
+                      'src/core/ext/transport/chttp2/transport/writing.c',
+                      'src/core/ext/transport/chttp2/alpn/alpn.c',
+                      'src/core/lib/http/httpcli_security_connector.c',
+                      'src/core/lib/security/context/security_context.c',
+                      'src/core/lib/security/credentials/composite/composite_credentials.c',
+                      'src/core/lib/security/credentials/credentials.c',
+                      'src/core/lib/security/credentials/credentials_metadata.c',
+                      'src/core/lib/security/credentials/fake/fake_credentials.c',
+                      'src/core/lib/security/credentials/google_default/credentials_posix.c',
+                      'src/core/lib/security/credentials/google_default/credentials_windows.c',
+                      'src/core/lib/security/credentials/google_default/google_default_credentials.c',
+                      'src/core/lib/security/credentials/iam/iam_credentials.c',
+                      'src/core/lib/security/credentials/jwt/json_token.c',
+                      'src/core/lib/security/credentials/jwt/jwt_credentials.c',
+                      'src/core/lib/security/credentials/jwt/jwt_verifier.c',
+                      'src/core/lib/security/credentials/oauth2/oauth2_credentials.c',
+                      'src/core/lib/security/credentials/plugin/plugin_credentials.c',
+                      'src/core/lib/security/credentials/ssl/ssl_credentials.c',
+                      'src/core/lib/security/transport/client_auth_filter.c',
+                      'src/core/lib/security/transport/handshake.c',
+                      'src/core/lib/security/transport/secure_endpoint.c',
+                      'src/core/lib/security/transport/security_connector.c',
+                      'src/core/lib/security/transport/server_auth_filter.c',
+                      'src/core/lib/security/transport/tsi_error.c',
+                      'src/core/lib/security/util/b64.c',
+                      'src/core/lib/security/util/json_util.c',
+                      'src/core/lib/surface/init_secure.c',
+                      'src/core/lib/tsi/fake_transport_security.c',
+                      'src/core/lib/tsi/ssl_transport_security.c',
+                      'src/core/lib/tsi/transport_security.c',
+                      'src/core/ext/transport/chttp2/client/secure/secure_channel_create.c',
+                      'src/core/ext/client_config/channel_connectivity.c',
+                      'src/core/ext/client_config/client_channel.c',
+                      'src/core/ext/client_config/client_channel_factory.c',
+                      'src/core/ext/client_config/client_config.c',
+                      'src/core/ext/client_config/client_config_plugin.c',
+                      'src/core/ext/client_config/connector.c',
+                      'src/core/ext/client_config/default_initial_connect_string.c',
+                      'src/core/ext/client_config/initial_connect_string.c',
+                      'src/core/ext/client_config/lb_policy.c',
+                      'src/core/ext/client_config/lb_policy_factory.c',
+                      'src/core/ext/client_config/lb_policy_registry.c',
+                      'src/core/ext/client_config/parse_address.c',
+                      'src/core/ext/client_config/resolver.c',
+                      'src/core/ext/client_config/resolver_factory.c',
+                      'src/core/ext/client_config/resolver_registry.c',
+                      'src/core/ext/client_config/subchannel.c',
+                      'src/core/ext/client_config/subchannel_call_holder.c',
+                      'src/core/ext/client_config/subchannel_index.c',
+                      'src/core/ext/client_config/uri_parser.c',
+                      'src/core/ext/transport/chttp2/server/insecure/server_chttp2.c',
+                      'src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c',
+                      'src/core/ext/transport/chttp2/client/insecure/channel_create.c',
+                      'src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c',
+                      'src/core/ext/lb_policy/grpclb/load_balancer_api.c',
+                      'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c',
+                      'third_party/nanopb/pb_common.c',
+                      'third_party/nanopb/pb_decode.c',
+                      'third_party/nanopb/pb_encode.c',
+                      'src/core/ext/lb_policy/pick_first/pick_first.c',
+                      'src/core/ext/lb_policy/round_robin/round_robin.c',
+                      'src/core/ext/resolver/dns/native/dns_resolver.c',
+                      'src/core/ext/resolver/sockaddr/sockaddr_resolver.c',
+                      'src/core/ext/load_reporting/load_reporting.c',
+                      'src/core/ext/load_reporting/load_reporting_filter.c',
+                      'src/core/ext/census/context.c',
+                      'src/core/ext/census/gen/census.pb.c',
+                      'src/core/ext/census/grpc_context.c',
+                      'src/core/ext/census/grpc_filter.c',
+                      'src/core/ext/census/grpc_plugin.c',
+                      'src/core/ext/census/initialize.c',
+                      'src/core/ext/census/mlog.c',
+                      'src/core/ext/census/operation.c',
+                      'src/core/ext/census/placeholders.c',
+                      'src/core/ext/census/tracing.c',
+                      'src/core/plugin_registry/grpc_plugin_registry.c'
+
+    ss.private_header_files = 'src/core/lib/profiling/timers.h',
+                              'src/core/lib/support/backoff.h',
+                              'src/core/lib/support/block_annotate.h',
+                              'src/core/lib/support/env.h',
+                              'src/core/lib/support/mpscq.h',
+                              'src/core/lib/support/murmur_hash.h',
+                              'src/core/lib/support/stack_lockfree.h',
+                              'src/core/lib/support/string.h',
+                              'src/core/lib/support/string_windows.h',
+                              'src/core/lib/support/thd_internal.h',
+                              'src/core/lib/support/time_precise.h',
+                              'src/core/lib/support/tmpfile.h',
+                              'src/core/lib/channel/channel_args.h',
+                              'src/core/lib/channel/channel_stack.h',
+                              'src/core/lib/channel/channel_stack_builder.h',
+                              'src/core/lib/channel/compress_filter.h',
+                              'src/core/lib/channel/connected_channel.h',
+                              'src/core/lib/channel/context.h',
+                              'src/core/lib/channel/http_client_filter.h',
+                              'src/core/lib/channel/http_server_filter.h',
+                              'src/core/lib/compression/algorithm_metadata.h',
+                              'src/core/lib/compression/message_compress.h',
+                              'src/core/lib/debug/trace.h',
+                              'src/core/lib/http/format_request.h',
+                              'src/core/lib/http/httpcli.h',
+                              'src/core/lib/http/parser.h',
+                              'src/core/lib/iomgr/closure.h',
+                              'src/core/lib/iomgr/combiner.h',
+                              'src/core/lib/iomgr/endpoint.h',
+                              'src/core/lib/iomgr/endpoint_pair.h',
+                              'src/core/lib/iomgr/error.h',
+                              'src/core/lib/iomgr/ev_epoll_linux.h',
+                              'src/core/lib/iomgr/ev_poll_and_epoll_posix.h',
+                              'src/core/lib/iomgr/ev_poll_posix.h',
+                              'src/core/lib/iomgr/ev_posix.h',
+                              'src/core/lib/iomgr/exec_ctx.h',
+                              'src/core/lib/iomgr/executor.h',
+                              'src/core/lib/iomgr/iocp_windows.h',
+                              'src/core/lib/iomgr/iomgr.h',
+                              'src/core/lib/iomgr/iomgr_internal.h',
+                              'src/core/lib/iomgr/iomgr_posix.h',
+                              'src/core/lib/iomgr/load_file.h',
+                              'src/core/lib/iomgr/network_status_tracker.h',
+                              'src/core/lib/iomgr/polling_entity.h',
+                              'src/core/lib/iomgr/pollset.h',
+                              'src/core/lib/iomgr/pollset_set.h',
+                              'src/core/lib/iomgr/pollset_set_windows.h',
+                              'src/core/lib/iomgr/pollset_windows.h',
+                              'src/core/lib/iomgr/resolve_address.h',
+                              'src/core/lib/iomgr/sockaddr.h',
+                              'src/core/lib/iomgr/sockaddr_posix.h',
+                              'src/core/lib/iomgr/sockaddr_utils.h',
+                              'src/core/lib/iomgr/sockaddr_windows.h',
+                              'src/core/lib/iomgr/socket_utils_posix.h',
+                              'src/core/lib/iomgr/socket_windows.h',
+                              'src/core/lib/iomgr/tcp_client.h',
+                              'src/core/lib/iomgr/tcp_posix.h',
+                              'src/core/lib/iomgr/tcp_server.h',
+                              'src/core/lib/iomgr/tcp_windows.h',
+                              'src/core/lib/iomgr/time_averaged_stats.h',
+                              'src/core/lib/iomgr/timer.h',
+                              'src/core/lib/iomgr/timer_heap.h',
+                              'src/core/lib/iomgr/udp_server.h',
+                              'src/core/lib/iomgr/unix_sockets_posix.h',
+                              'src/core/lib/iomgr/wakeup_fd_pipe.h',
+                              'src/core/lib/iomgr/wakeup_fd_posix.h',
+                              'src/core/lib/iomgr/workqueue.h',
+                              'src/core/lib/iomgr/workqueue_posix.h',
+                              'src/core/lib/iomgr/workqueue_windows.h',
+                              'src/core/lib/json/json.h',
+                              'src/core/lib/json/json_common.h',
+                              'src/core/lib/json/json_reader.h',
+                              'src/core/lib/json/json_writer.h',
+                              'src/core/lib/surface/api_trace.h',
+                              'src/core/lib/surface/call.h',
+                              'src/core/lib/surface/call_test_only.h',
+                              'src/core/lib/surface/channel.h',
+                              'src/core/lib/surface/channel_init.h',
+                              'src/core/lib/surface/channel_stack_type.h',
+                              'src/core/lib/surface/completion_queue.h',
+                              'src/core/lib/surface/event_string.h',
+                              'src/core/lib/surface/init.h',
+                              'src/core/lib/surface/lame_client.h',
+                              'src/core/lib/surface/server.h',
+                              'src/core/lib/transport/byte_stream.h',
+                              'src/core/lib/transport/connectivity_state.h',
+                              'src/core/lib/transport/metadata.h',
+                              'src/core/lib/transport/metadata_batch.h',
+                              'src/core/lib/transport/static_metadata.h',
+                              'src/core/lib/transport/transport.h',
+                              'src/core/lib/transport/transport_impl.h',
+                              'src/core/ext/transport/chttp2/transport/bin_decoder.h',
+                              'src/core/ext/transport/chttp2/transport/bin_encoder.h',
+                              'src/core/ext/transport/chttp2/transport/chttp2_transport.h',
+                              'src/core/ext/transport/chttp2/transport/frame.h',
+                              'src/core/ext/transport/chttp2/transport/frame_data.h',
+                              'src/core/ext/transport/chttp2/transport/frame_goaway.h',
+                              'src/core/ext/transport/chttp2/transport/frame_ping.h',
+                              'src/core/ext/transport/chttp2/transport/frame_rst_stream.h',
+                              'src/core/ext/transport/chttp2/transport/frame_settings.h',
+                              'src/core/ext/transport/chttp2/transport/frame_window_update.h',
+                              'src/core/ext/transport/chttp2/transport/hpack_encoder.h',
+                              'src/core/ext/transport/chttp2/transport/hpack_parser.h',
+                              'src/core/ext/transport/chttp2/transport/hpack_table.h',
+                              'src/core/ext/transport/chttp2/transport/http2_errors.h',
+                              'src/core/ext/transport/chttp2/transport/huffsyms.h',
+                              'src/core/ext/transport/chttp2/transport/incoming_metadata.h',
+                              'src/core/ext/transport/chttp2/transport/internal.h',
+                              'src/core/ext/transport/chttp2/transport/status_conversion.h',
+                              'src/core/ext/transport/chttp2/transport/stream_map.h',
+                              'src/core/ext/transport/chttp2/transport/timeout_encoding.h',
+                              'src/core/ext/transport/chttp2/transport/varint.h',
+                              'src/core/ext/transport/chttp2/alpn/alpn.h',
+                              'src/core/lib/security/context/security_context.h',
+                              'src/core/lib/security/credentials/composite/composite_credentials.h',
+                              'src/core/lib/security/credentials/credentials.h',
+                              'src/core/lib/security/credentials/fake/fake_credentials.h',
+                              'src/core/lib/security/credentials/google_default/google_default_credentials.h',
+                              'src/core/lib/security/credentials/iam/iam_credentials.h',
+                              'src/core/lib/security/credentials/jwt/json_token.h',
+                              'src/core/lib/security/credentials/jwt/jwt_credentials.h',
+                              'src/core/lib/security/credentials/jwt/jwt_verifier.h',
+                              'src/core/lib/security/credentials/oauth2/oauth2_credentials.h',
+                              'src/core/lib/security/credentials/plugin/plugin_credentials.h',
+                              'src/core/lib/security/credentials/ssl/ssl_credentials.h',
+                              'src/core/lib/security/transport/auth_filters.h',
+                              'src/core/lib/security/transport/handshake.h',
+                              'src/core/lib/security/transport/secure_endpoint.h',
+                              'src/core/lib/security/transport/security_connector.h',
+                              'src/core/lib/security/transport/tsi_error.h',
+                              'src/core/lib/security/util/b64.h',
+                              'src/core/lib/security/util/json_util.h',
+                              'src/core/lib/tsi/fake_transport_security.h',
+                              'src/core/lib/tsi/ssl_transport_security.h',
+                              'src/core/lib/tsi/ssl_types.h',
+                              'src/core/lib/tsi/transport_security.h',
+                              'src/core/lib/tsi/transport_security_interface.h',
+                              'src/core/ext/client_config/client_channel.h',
+                              'src/core/ext/client_config/client_channel_factory.h',
+                              'src/core/ext/client_config/client_config.h',
+                              'src/core/ext/client_config/connector.h',
+                              'src/core/ext/client_config/initial_connect_string.h',
+                              'src/core/ext/client_config/lb_policy.h',
+                              'src/core/ext/client_config/lb_policy_factory.h',
+                              'src/core/ext/client_config/lb_policy_registry.h',
+                              'src/core/ext/client_config/parse_address.h',
+                              'src/core/ext/client_config/resolver.h',
+                              'src/core/ext/client_config/resolver_factory.h',
+                              'src/core/ext/client_config/resolver_registry.h',
+                              'src/core/ext/client_config/subchannel.h',
+                              'src/core/ext/client_config/subchannel_call_holder.h',
+                              'src/core/ext/client_config/subchannel_index.h',
+                              'src/core/ext/client_config/uri_parser.h',
+                              'src/core/ext/lb_policy/grpclb/load_balancer_api.h',
+                              'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h',
+                              'third_party/nanopb/pb.h',
+                              'third_party/nanopb/pb_common.h',
+                              'third_party/nanopb/pb_decode.h',
+                              'third_party/nanopb/pb_encode.h',
+                              'src/core/ext/load_reporting/load_reporting.h',
+                              'src/core/ext/load_reporting/load_reporting_filter.h',
+                              'src/core/ext/census/aggregation.h',
+                              'src/core/ext/census/census_interface.h',
+                              'src/core/ext/census/census_rpc_stats.h',
+                              'src/core/ext/census/gen/census.pb.h',
+                              'src/core/ext/census/grpc_filter.h',
+                              'src/core/ext/census/mlog.h',
+                              'src/core/ext/census/rpc_metric_id.h'
+  end
+end
diff --git a/gRPC-ProtoRPC.podspec b/gRPC-ProtoRPC.podspec
new file mode 100644
index 0000000000000000000000000000000000000000..9cc33c7dbd0e76c2c318f7fa18052b25fae174a1
--- /dev/null
+++ b/gRPC-ProtoRPC.podspec
@@ -0,0 +1,69 @@
+# GRPC CocoaPods podspec
+# This file has been automatically generated from a template file.
+# Please look at the templates directory instead.
+# This file can be regenerated from the template by running
+# tools/buildgen/generate_projects.sh
+
+# Copyright 2015, 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.
+
+
+Pod::Spec.new do |s|
+  s.name     = 'gRPC-ProtoRPC'
+  version = '0.14.0'
+  s.version  = version
+  s.summary  = 'RPC library for Protocol Buffers, based on gRPC'
+  s.homepage = 'http://www.grpc.io'
+  s.license  = 'New BSD'
+  s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
+
+  s.source = {
+    :git => 'https://github.com/grpc/grpc.git',
+    :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}",
+  }
+
+  s.ios.deployment_target = '7.1'
+  s.osx.deployment_target = '10.9'
+
+  name = 'ProtoRPC'
+  s.module_name = name
+  s.header_dir = name
+
+  src_dir = 'src/objective-c/ProtoRPC'
+  s.source_files = "#{src_dir}/*.{h,m}"
+  s.header_mappings_dir = "#{src_dir}"
+
+  s.dependency 'gRPC', version
+  s.dependency 'gRPC-RxLibrary', version
+  s.dependency 'Protobuf', '~> 3.0.0-beta-3.1'
+  # This is needed by all pods that depend on Protobuf:
+  s.pod_target_xcconfig = {
+    'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1',
+  }
+end
diff --git a/gRPC-RxLibrary.podspec b/gRPC-RxLibrary.podspec
new file mode 100644
index 0000000000000000000000000000000000000000..6263878213e010a538d597aa01c5b9dcfcf803da
--- /dev/null
+++ b/gRPC-RxLibrary.podspec
@@ -0,0 +1,62 @@
+# GRPC CocoaPods podspec
+# This file has been automatically generated from a template file.
+# Please look at the templates directory instead.
+# This file can be regenerated from the template by running
+# tools/buildgen/generate_projects.sh
+
+# Copyright 2015, 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.
+
+
+Pod::Spec.new do |s|
+  s.name     = 'gRPC-RxLibrary'
+  version = '0.14.0'
+  s.version  = version
+  s.summary  = 'Reactive Extensions library for iOS/OSX.'
+  s.homepage = 'http://www.grpc.io'
+  s.license  = 'New BSD'
+  s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
+
+  s.source = {
+    :git => 'https://github.com/grpc/grpc.git',
+    :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}",
+  }
+
+  s.ios.deployment_target = '7.1'
+  s.osx.deployment_target = '10.9'
+
+  name = 'RxLibrary'
+  s.module_name = name
+  s.header_dir = name
+
+  src_dir = 'src/objective-c/RxLibrary'
+  s.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
+  s.private_header_files = "#{src_dir}/private/*.h"
+  s.header_mappings_dir = "#{src_dir}"
+end
diff --git a/gRPC.podspec b/gRPC.podspec
index 4f2203c7a59470a14e63ad1d4562b6b43a474282..5ca0cab98b9ab358f84831ee4b02b4e0f20dafd4 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -43,13 +43,14 @@ Pod::Spec.new do |s|
   s.license  = 'New BSD'
   s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
 
-  s.source = { :git => 'https://github.com/grpc/grpc.git',
-               :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}",
-               :submodules => true }
-
+  s.source = {
+    :git => 'https://github.com/grpc/grpc.git',
+    :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}",
+  }
 
   s.ios.deployment_target = '7.1'
   s.osx.deployment_target = '10.9'
+<<<<<<< HEAD
   s.requires_arc = true
 
   objc_dir = 'src/objective-c'
@@ -730,22 +731,21 @@ Pod::Spec.new do |s|
     ss.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
     ss.private_header_files = "#{src_dir}/private/*.h"
     ss.header_mappings_dir = "#{objc_dir}"
+=======
+>>>>>>> 32d3fbe284ddd7e90b49cdf72349d661869969ca
 
-    ss.dependency 'gRPC/C-Core'
-    ss.dependency 'gRPC/RxLibrary'
+  name = 'GRPCClient'
+  s.module_name = name
+  s.header_dir = name
 
-    # Certificates, to be able to establish TLS connections:
-    ss.resource_bundles = { 'gRPCCertificates' => ['etc/roots.pem'] }
-  end
+  src_dir = 'src/objective-c/GRPCClient'
+  s.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
+  s.private_header_files = "#{src_dir}/private/*.h"
+  s.header_mappings_dir = "#{src_dir}"
 
-  # RPC library for ProtocolBuffers, based on gRPC
-  s.subspec 'ProtoRPC' do |ss|
-    src_dir = "#{objc_dir}/ProtoRPC"
-    ss.source_files = "#{src_dir}/*.{h,m}"
-    ss.header_mappings_dir = "#{objc_dir}"
+  s.dependency 'gRPC-Core', version
+  s.dependency 'gRPC-RxLibrary', version
 
-    ss.dependency 'gRPC/GRPCClient'
-    ss.dependency 'gRPC/RxLibrary'
-    ss.dependency 'Protobuf', '~> 3.0.0-alpha-4'
-  end
+  # Certificates, to be able to establish TLS connections:
+  s.resource_bundles = { 'gRPCCertificates' => ['etc/roots.pem'] }
 end
diff --git a/include/grpc/module.modulemap b/include/grpc/module.modulemap
new file mode 100644
index 0000000000000000000000000000000000000000..ae11a78b74a2ff60d6e39972ba177a55b69787a7
--- /dev/null
+++ b/include/grpc/module.modulemap
@@ -0,0 +1,5 @@
+framework module grpc {
+  umbrella header "grpc.h"
+  export *
+  module * { export * }
+}
diff --git a/package.json b/package.json
index 68a31d794c5edeefad2ffc128aa6280e670e0f7c..1fec9cb40f8628ec9dd967edbb86521f546dbcca 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/src/core/lib/security/transport/client_auth_filter.c b/src/core/lib/security/transport/client_auth_filter.c
index 14ccf72dc95e4efc5cdbc37297a026dbbaee3e6a..ed7929aa27e9d52fd9401f6ba4d67ced00a4a757 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 @@ static void send_security_metadata(grpc_exec_ctx *exec_ctx,
     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 @@ static void on_host_checked(grpc_exec_ctx *exec_ctx, void *user_data,
     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 2cf6d8890a3935ac7b328e9d5b566b312a8f70b5..6d2b1c4935273b0394e6e9ae1a60f73ca9353f14 100644
--- a/src/core/lib/surface/channel.c
+++ b/src/core/lib/surface/channel.c
@@ -81,7 +81,7 @@ struct grpc_channel {
   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 0000000000000000000000000000000000000000..0209b570e10da54c158654433c5d3212b548c352
--- /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 523668308814fc9e37acb0d56569c3d6f4c60333..64ba9fb9601acdc29f3a33da4e0c5a9d801990dc 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.setStatus = function(service, status) {
 };
 
 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 0000000000000000000000000000000000000000..42161198ccd19de9adb9bfc9da2fccad7434726a
--- /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 0000000000000000000000000000000000000000..ad65b319177688d7dd5b1787f0c4e99e7e1ae21e
--- /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 0000000000000000000000000000000000000000..89bc304e56664f2fd8c612779b19471b200c92be
--- /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 0000000000000000000000000000000000000000..b36d47cdbb94aeff1e65dd19429551f2be216a55
--- /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 c93b528d42f2a6d259ac95ef408a47a2258cef5e..efbca46c2dc732544415af1caa93743daa70f820 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 @@ describe('Health Checking', function() {
   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 @@ describe('Health Checking', function() {
     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/objective-c/BoringSSL.podspec b/src/objective-c/BoringSSL.podspec
index 7d1de8071698936d6b11b8f175d84ae23ea2e13e..26a0451f7d3f132e51313f6715bf72c19ee12996 100644
--- a/src/objective-c/BoringSSL.podspec
+++ b/src/objective-c/BoringSSL.podspec
@@ -31,7 +31,8 @@
 
 Pod::Spec.new do |s|
   s.name     = 'BoringSSL'
-  s.version  = '3.0'
+  version = '4.0'
+  s.version  = version
   s.summary  = 'BoringSSL is a fork of OpenSSL that is designed to meet Google’s needs.'
   # Adapted from the homepage:
   s.description = <<-DESC
@@ -67,31 +68,136 @@ Pod::Spec.new do |s|
   s.authors  = 'Adam Langley', 'David Benjamin', 'Matt Braithwaite'
 
   s.source = { :git => 'https://boringssl.googlesource.com/boringssl',
-               :tag => 'version_for_cocoapods_3.0' }
+               :tag => "version_for_cocoapods_#{version}" }
 
-  s.source_files = 'ssl/*.{h,c}',
-                   'ssl/**/*.{h,c}',
-                   '*.{h,c}',
-                   'crypto/*.{h,c}',
-                   'crypto/**/*.{h,c}',
-                   'include/openssl/*.h'
+  name = 'openssl'
 
-  s.public_header_files = 'include/openssl/*.h'
-  s.header_mappings_dir = 'include'
+  # When creating a dynamic framework, name it openssl.framework instead of BoringSSL.framework.
+  # This lets users write their includes like `#include <openssl/ssl.h>` as opposed to `#include
+  # <BoringSSL/ssl.h>`.
+  s.module_name = name
 
-  s.exclude_files = "**/*_test.*"
+  # When creating a dynamic framework, copy the headers under `include/openssl/` into the root of
+  # the `Headers/` directory of the framework (i.e., not under `Headers/include/openssl`).
+  #
+  # TODO(jcanizales): Debug why this doesn't work on macOS.
+  s.header_mappings_dir = 'include/openssl'
+
+  # The above has an undesired effect when creating a static library: It forces users to write
+  # includes like `#include <BoringSSL/ssl.h>`. `s.header_dir` adds a path prefix to that, and
+  # because Cocoapods lets omit the pod name when including headers of static libraries, the
+  # following lets users write `#include <openssl/ssl.h>`.
+  s.header_dir = name
+
+  # The module map and umbrella header created automatically by Cocoapods don't work for C libraries
+  # like this one. The following file, and a correct umbrella header, are created on the fly by the
+  # `prepare_command` of this pod.
+  s.module_map = 'include/openssl/module.modulemap'
 
   # We don't need to inhibit all warnings; only -Wno-shorten-64-to-32. But Cocoapods' linter doesn't
   # want that for some reason.
   s.compiler_flags = '-DOPENSSL_NO_ASM', '-GCC_WARN_INHIBIT_ALL_WARNINGS', '-w'
   s.requires_arc = false
 
+  # Like many other C libraries, BoringSSL has its public headers under `include/<libname>/` and its
+  # sources and private headers in other directories outside `include/`. Cocoapods' linter doesn't
+  # allow any header to be listed outside the `header_mappings_dir` (even though doing so works in
+  # practice). Because we need our `header_mappings_dir` to be `include/openssl/` for the reason
+  # mentioned above, we work around the linter limitation by dividing the pod into two subspecs, one
+  # for public headers and the other for implementation. Each gets its own `header_mappings_dir`,
+  # making the linter happy.
+  s.subspec 'Interface' do |ss|
+    ss.header_mappings_dir = 'include/openssl'
+    ss.source_files = 'include/openssl/*.h'
+    # Doesn't compile correctly; but doesn't seem to be needed:
+    ss.exclude_files = 'include/openssl/arm_arch.h'
+  end
+  s.subspec 'Implementation' do |ss|
+    ss.header_mappings_dir = '.'
+    ss.source_files = 'ssl/*.{h,c}',
+                      'ssl/**/*.{h,c}',
+                      '*.{h,c}',
+                      'crypto/*.{h,c}',
+                      'crypto/**/*.{h,c}'
+    ss.private_header_files = 'ssl/*.h',
+                              'ssl/**/*.h',
+                              '*.h',
+                              'crypto/*.h',
+                              'crypto/**/*.h'
+    ss.exclude_files = '**/*_test.*',
+                       '**/test_*.*',
+                       '**/test/*.*'
+
+    ss.dependency "#{s.name}/Interface", version
+  end
+
   s.prepare_command = <<-END_OF_COMMAND
     # Replace "const BIGNUM *I" in rsa.h with a lowercase i, as the former fails when including
     # OpenSSL in a Swift bridging header (complex.h defines "I", and it's as if the compiler
     # included it in every bridged header).
     sed -E -i '.back' 's/\\*I,/*i,/g' include/openssl/rsa.h
 
+    # Replace `#include "../crypto/internal.h"` in e_tls.c with `#include "../internal.h"`. The
+    # former assumes crypto/ is in the headers search path, which is hard to enforce when using
+    # dynamic frameworks. The latters always works, being relative to the current file.
+    sed -E -i '.back' 's/crypto\\///g' crypto/cipher/e_tls.c
+
+    # Add a module map and an umbrella header
+    cat > include/openssl/umbrella.h <<EOF
+      #include "ssl.h"
+      #include "crypto.h"
+      #include "aes.h"
+      #include "asn1.h"
+      #include "asn1_mac.h"
+      #include "asn1t.h"
+      #include "blowfish.h"
+      #include "cast.h"
+      #include "chacha.h"
+      #include "cmac.h"
+      #include "conf.h"
+      #include "cpu.h"
+      #include "curve25519.h"
+      #include "des.h"
+      #include "dtls1.h"
+      #include "hkdf.h"
+      #include "md4.h"
+      #include "md5.h"
+      #include "newhope.h"
+      #include "obj_mac.h"
+      #include "objects.h"
+      #include "opensslv.h"
+      #include "ossl_typ.h"
+      #include "pkcs12.h"
+      #include "pkcs7.h"
+      #include "pkcs8.h"
+      #include "poly1305.h"
+      #include "rand.h"
+      #include "rc4.h"
+      #include "ripemd.h"
+      #include "safestack.h"
+      #include "srtp.h"
+      #include "time_support.h"
+      #include "x509.h"
+      #include "x509v3.h"
+    EOF
+    cat > include/openssl/module.modulemap <<EOF
+      framework module openssl {
+        umbrella header "umbrella.h"
+        export *
+        module * { export * }
+      }
+    EOF
+
+    # #include <inttypes.h> fails to compile when building a dynamic framework. libgit2 in
+    # https://github.com/libgit2/libgit2/commit/1ddada422caf8e72ba97dca2568d2bf879fed5f2 and libvpx
+    # in https://chromium.googlesource.com/webm/libvpx/+/1bec0c5a7e885ec792f6bb658eb3f34ad8f37b15
+    # work around it by removing the include. We need four of its macros, so we expand them here.
+    sed -E -i '.back' '/<inttypes.h>/d' include/openssl/bn.h
+    sed -E -i '.back' 's/PRIu32/"u"/g' include/openssl/bn.h
+    sed -E -i '.back' 's/PRIx32/"x"/g' include/openssl/bn.h
+    sed -E -i '.back' 's/PRIu64/"llu"/g' include/openssl/bn.h
+    sed -E -i '.back' 's/PRIx64/"llx"/g' include/openssl/bn.h
+
     # This is a bit ridiculous, but requiring people to install Go in order to build is slightly
     # more ridiculous IMO. To save you from scrolling, this is the last part of the podspec.
     # TODO(jcanizales): Translate err_data_generate.go into a Bash or Ruby script.
@@ -110,7 +216,7 @@ Pod::Spec.new do |s|
        * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
        * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
 
-       /* This file was generated by err_data_generate.go. */
+      /* This file was generated by err_data_generate.go. */
 
       #include <openssl/base.h>
       #include <openssl/err.h>
@@ -152,178 +258,166 @@ Pod::Spec.new do |s|
       OPENSSL_COMPILE_ASSERT(ERR_NUM_LIBS == 33, library_values_changed_num);
 
       const uint32_t kOpenSSLReasonValues[] = {
-          0xc3207ba,
-          0xc3287d4,
-          0xc3307e3,
-          0xc3387f3,
-          0xc340802,
-          0xc34881b,
-          0xc350827,
-          0xc358844,
-          0xc360856,
-          0xc368864,
-          0xc370874,
-          0xc378881,
-          0xc380891,
-          0xc38889c,
-          0xc3908b2,
-          0xc3988c1,
-          0xc3a08d5,
-          0xc3a87c7,
-          0xc3b00b0,
-          0x10321478,
-          0x10329484,
-          0x1033149d,
-          0x103394b0,
-          0x10340de1,
-          0x103494cf,
-          0x103514e4,
-          0x10359516,
-          0x1036152f,
-          0x10369544,
-          0x10371562,
-          0x10379571,
-          0x1038158d,
-          0x103895a8,
-          0x103915b7,
-          0x103995d3,
-          0x103a15ee,
-          0x103a9605,
-          0x103b1616,
-          0x103b962a,
-          0x103c1649,
-          0x103c9658,
-          0x103d166f,
-          0x103d9682,
-          0x103e0b6c,
-          0x103e96b3,
-          0x103f16c6,
-          0x103f96e0,
-          0x104016f0,
-          0x10409704,
-          0x1041171a,
-          0x10419732,
-          0x10421747,
-          0x1042975b,
-          0x1043176d,
-          0x104385d0,
-          0x104408c1,
-          0x10449782,
-          0x10451799,
-          0x104597ae,
-          0x104617bc,
-          0x10469695,
-          0x104714f7,
-          0x104787c7,
-          0x104800b0,
-          0x104894c3,
-          0x14320b4f,
-          0x14328b5d,
-          0x14330b6c,
-          0x14338b7e,
+          0xc320838,
+          0xc328852,
+          0xc330861,
+          0xc338871,
+          0xc340880,
+          0xc348899,
+          0xc3508a5,
+          0xc3588c2,
+          0xc3608d4,
+          0xc3688e2,
+          0xc3708f2,
+          0xc3788ff,
+          0xc38090f,
+          0xc38891a,
+          0xc390930,
+          0xc39893f,
+          0xc3a0953,
+          0xc3a8845,
+          0xc3b00ea,
+          0x10320845,
+          0x103293ab,
+          0x103313b7,
+          0x103393d0,
+          0x103413e3,
+          0x10348e8b,
+          0x10350c19,
+          0x103593f6,
+          0x1036140b,
+          0x1036941e,
+          0x1037143d,
+          0x10379456,
+          0x1038146b,
+          0x10389489,
+          0x10391498,
+          0x103994b4,
+          0x103a14cf,
+          0x103a94de,
+          0x103b14fa,
+          0x103b9515,
+          0x103c152c,
+          0x103c80ea,
+          0x103d153d,
+          0x103d9551,
+          0x103e1570,
+          0x103e957f,
+          0x103f1596,
+          0x103f95a9,
+          0x10400bea,
+          0x104095bc,
+          0x104115da,
+          0x104195ed,
+          0x10421607,
+          0x10429617,
+          0x1043162b,
+          0x10439641,
+          0x10441659,
+          0x1044966e,
+          0x10451682,
+          0x10459694,
+          0x104605fb,
+          0x1046893f,
+          0x104716a9,
+          0x104796c0,
+          0x104816d5,
+          0x104896e3,
+          0x14320bcd,
+          0x14328bdb,
+          0x14330bea,
+          0x14338bfc,
+          0x143400ac,
+          0x143480ea,
           0x18320083,
-          0x18328e47,
-          0x18340e75,
-          0x18348e89,
-          0x18358ec0,
-          0x18368eed,
-          0x18370f00,
-          0x18378f14,
-          0x18380f38,
-          0x18388f46,
-          0x18390f5c,
-          0x18398f70,
-          0x183a0f80,
-          0x183b0f90,
-          0x183b8fa5,
-          0x183c8fd0,
-          0x183d0fe4,
-          0x183d8ff4,
-          0x183e0b9b,
-          0x183e9001,
-          0x183f1013,
-          0x183f901e,
-          0x1840102e,
-          0x1840903f,
-          0x18411050,
-          0x18419062,
-          0x1842108b,
-          0x184290bd,
-          0x184310cc,
-          0x18451135,
-          0x1845914b,
-          0x18461166,
-          0x18468ed8,
-          0x184709d9,
-          0x18478094,
-          0x18480fbc,
-          0x18489101,
-          0x18490e5d,
-          0x18498e9e,
-          0x184a119c,
-          0x184a9119,
-          0x184b10e0,
-          0x184b8e37,
-          0x184c10a4,
-          0x184c866b,
-          0x184d1181,
-          0x203211c3,
-          0x243211cf,
-          0x24328907,
-          0x243311e1,
-          0x243391ee,
-          0x243411fb,
-          0x2434920d,
-          0x2435121c,
-          0x24359239,
-          0x24361246,
-          0x24369254,
-          0x24371262,
-          0x24379270,
-          0x24381279,
-          0x24389286,
-          0x24391299,
-          0x28320b8f,
-          0x28328b9b,
-          0x28330b6c,
-          0x28338bae,
-          0x2c322c0b,
-          0x2c32ac19,
-          0x2c332c2b,
-          0x2c33ac3d,
-          0x2c342c51,
-          0x2c34ac63,
-          0x2c352c7e,
-          0x2c35ac90,
-          0x2c362ca3,
-          0x2c3682f3,
-          0x2c372cb0,
-          0x2c37acc2,
-          0x2c382cd5,
-          0x2c38ace3,
-          0x2c392cf3,
-          0x2c39ad05,
-          0x2c3a2d19,
-          0x2c3aad2a,
-          0x2c3b1359,
-          0x2c3bad3b,
-          0x2c3c2d4f,
-          0x2c3cad65,
-          0x2c3d2d7e,
-          0x2c3dadac,
-          0x2c3e2dba,
-          0x2c3eadd2,
-          0x2c3f2dea,
-          0x2c3fadf7,
-          0x2c402e1a,
-          0x2c40ae39,
-          0x2c4111c3,
-          0x2c41ae4a,
-          0x2c422e5d,
-          0x2c429135,
-          0x2c432e6e,
-          0x2c4386a2,
-          0x2c442d9b,
+          0x18328ee1,
+          0x183300ac,
+          0x18338ef7,
+          0x18340f0b,
+          0x183480ea,
+          0x18350f20,
+          0x18358f38,
+          0x18360f4d,
+          0x18368f61,
+          0x18370f85,
+          0x18378f9b,
+          0x18380faf,
+          0x18388fbf,
+          0x18390a57,
+          0x18398fcf,
+          0x183a0fe4,
+          0x183a8ff8,
+          0x183b0c25,
+          0x183b9005,
+          0x183c1017,
+          0x183c9022,
+          0x183d1032,
+          0x183d9043,
+          0x183e1054,
+          0x183e9066,
+          0x183f108f,
+          0x183f90a8,
+          0x184010c0,
+          0x184086d3,
+          0x203210e7,
+          0x243210f3,
+          0x24328985,
+          0x24331105,
+          0x24339112,
+          0x2434111f,
+          0x24349131,
+          0x24351140,
+          0x2435915d,
+          0x2436116a,
+          0x24369178,
+          0x24371186,
+          0x24379194,
+          0x2438119d,
+          0x243891aa,
+          0x243911bd,
+          0x28320c0d,
+          0x28328c25,
+          0x28330bea,
+          0x28338c38,
+          0x28340c19,
+          0x283480ac,
+          0x283500ea,
+          0x2c322775,
+          0x2c32a783,
+          0x2c332795,
+          0x2c33a7a7,
+          0x2c3427bb,
+          0x2c34a7cd,
+          0x2c3527e8,
+          0x2c35a7fa,
+          0x2c36280d,
+          0x2c36832d,
+          0x2c37281a,
+          0x2c37a82c,
+          0x2c38283f,
+          0x2c38a856,
+          0x2c392864,
+          0x2c39a874,
+          0x2c3a2886,
+          0x2c3aa89a,
+          0x2c3b28ab,
+          0x2c3ba8ca,
+          0x2c3c28de,
+          0x2c3ca8f4,
+          0x2c3d290d,
+          0x2c3da92a,
+          0x2c3e293b,
+          0x2c3ea949,
+          0x2c3f2961,
+          0x2c3fa979,
+          0x2c402986,
+          0x2c4090e7,
+          0x2c412997,
+          0x2c41a9aa,
+          0x2c4210c0,
+          0x2c42a9bb,
+          0x2c430720,
+          0x2c43a8bc,
           0x30320000,
           0x30328015,
           0x3033001f,
@@ -333,479 +427,451 @@ Pod::Spec.new do |s|
           0x3035006b,
           0x30358083,
           0x30360094,
-          0x303680a1,
-          0x303700b0,
-          0x303780bd,
-          0x303800d0,
-          0x303880eb,
-          0x30390100,
-          0x30398114,
-          0x303a0128,
-          0x303a8139,
-          0x303b0152,
-          0x303b816f,
-          0x303c017d,
-          0x303c8191,
-          0x303d01a1,
-          0x303d81ba,
-          0x303e01ca,
-          0x303e81dd,
-          0x303f01ec,
-          0x303f81f8,
-          0x3040020d,
-          0x3040821d,
-          0x30410234,
-          0x30418241,
-          0x30420254,
-          0x30428263,
-          0x30430278,
-          0x30438299,
-          0x304402ac,
-          0x304482bf,
-          0x304502d8,
-          0x304582f3,
-          0x30460310,
-          0x30468329,
-          0x30470337,
-          0x30478348,
-          0x30480357,
-          0x3048836f,
-          0x30490381,
-          0x30498395,
-          0x304a03b4,
-          0x304a83c7,
-          0x304b03d2,
-          0x304b83e1,
-          0x304c03f2,
-          0x304c83fe,
-          0x304d0414,
-          0x304d8422,
-          0x304e0438,
-          0x304e844a,
-          0x304f045c,
-          0x304f846f,
-          0x30500482,
-          0x30508493,
-          0x305104a3,
-          0x305184bb,
-          0x305204d0,
-          0x305284e8,
-          0x305304fc,
-          0x30538514,
-          0x3054052d,
-          0x30548546,
-          0x30550563,
-          0x3055856e,
-          0x30560586,
-          0x30568596,
-          0x305705a7,
-          0x305785ba,
-          0x305805d0,
-          0x305885d9,
-          0x305905ee,
-          0x30598601,
-          0x305a0610,
-          0x305a8630,
-          0x305b063f,
-          0x305b864b,
-          0x305c066b,
-          0x305c8687,
-          0x305d0698,
-          0x305d86a2,
-          0x34320ac9,
-          0x34328add,
-          0x34330afa,
-          0x34338b0d,
-          0x34340b1c,
-          0x34348b39,
+          0x303680ac,
+          0x303700b9,
+          0x303780c8,
+          0x303800ea,
+          0x303880f7,
+          0x3039010a,
+          0x30398125,
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+          0x5036aa76,
+          0x50372a8f,
+          0x5037aaa2,
+          0x50382aba,
+          0x5038aacb,
+          0x50392ae0,
+          0x5039aaf4,
+          0x503a2b14,
+          0x503aab2a,
+          0x503b2b42,
+          0x503bab54,
+          0x503c2b70,
+          0x503cab87,
+          0x503d2ba0,
+          0x503dabb6,
+          0x503e2bc3,
+          0x503eabd9,
+          0x503f2beb,
+          0x503f8382,
+          0x50402bfe,
+          0x5040ac0e,
+          0x50412c28,
+          0x5041ac37,
+          0x50422c51,
+          0x5042ac6e,
+          0x50432c7e,
+          0x5043ac8e,
+          0x50442c9d,
+          0x5044843f,
+          0x50452cb1,
+          0x5045accf,
+          0x50462ce2,
+          0x5046acf8,
+          0x50472d0a,
+          0x5047ad1f,
+          0x50482d45,
+          0x5048ad53,
+          0x50492d66,
+          0x5049ad7b,
+          0x504a2d91,
+          0x504aada1,
+          0x504b2dc1,
+          0x504badd4,
+          0x504c2df7,
+          0x504cae25,
+          0x504d2e37,
+          0x504dae54,
+          0x504e2e6f,
+          0x504eae8b,
+          0x504f2e9d,
+          0x504faeb4,
+          0x50502ec3,
+          0x505086ef,
+          0x50512ed6,
+          0x58320ec9,
+          0x68320e8b,
+          0x68328c25,
+          0x68330c38,
+          0x68338e99,
+          0x68340ea9,
+          0x683480ea,
+          0x6c320e67,
+          0x6c328bfc,
+          0x6c330e72,
+          0x74320a0b,
+          0x78320970,
+          0x78328985,
+          0x78330991,
           0x78338083,
-          0x78340922,
-          0x78348937,
-          0x78350956,
-          0x78358978,
-          0x7836098d,
-          0x783689a3,
-          0x783709b3,
-          0x783789c6,
-          0x783809d9,
-          0x783889eb,
-          0x783909f8,
-          0x78398a17,
-          0x783a0a2c,
-          0x783a8a3a,
-          0x783b0a44,
-          0x783b8a58,
-          0x783c0a6f,
-          0x783c8a84,
-          0x783d0a9b,
-          0x783d8ab0,
-          0x783e0a06,
-          0x7c3211b2,
+          0x783409a0,
+          0x783489b5,
+          0x783509d4,
+          0x783589f6,
+          0x78360a0b,
+          0x78368a21,
+          0x78370a31,
+          0x78378a44,
+          0x78380a57,
+          0x78388a69,
+          0x78390a76,
+          0x78398a95,
+          0x783a0aaa,
+          0x783a8ab8,
+          0x783b0ac2,
+          0x783b8ad6,
+          0x783c0aed,
+          0x783c8b02,
+          0x783d0b19,
+          0x783d8b2e,
+          0x783e0a84,
+          0x7c3210d6,
       };
 
       const size_t kOpenSSLReasonValuesLen = sizeof(kOpenSSLReasonValues) / sizeof(kOpenSSLReasonValues[0]);
@@ -819,8 +885,10 @@ Pod::Spec.new do |s|
           "BN_LIB\\0"
           "BOOLEAN_IS_WRONG_LENGTH\\0"
           "BUFFER_TOO_SMALL\\0"
+          "CONTEXT_NOT_INITIALISED\\0"
           "DECODE_ERROR\\0"
           "DEPTH_EXCEEDED\\0"
+          "DIGEST_AND_KEY_TYPE_NOT_SUPPORTED\\0"
           "ENCODE_ERROR\\0"
           "ERROR_GETTING_TIME\\0"
           "EXPECTING_AN_ASN1_SEQUENCE\\0"
@@ -861,7 +929,6 @@ Pod::Spec.new do |s|
           "INVALID_UNIVERSALSTRING_LENGTH\\0"
           "INVALID_UTF8STRING\\0"
           "LIST_ERROR\\0"
-          "MALLOC_FAILURE\\0"
           "MISSING_ASN1_EOS\\0"
           "MISSING_EOC\\0"
           "MISSING_SECOND_NUMBER\\0"
@@ -893,10 +960,13 @@ Pod::Spec.new do |s|
           "UNEXPECTED_EOC\\0"
           "UNIVERSALSTRING_IS_WRONG_LENGTH\\0"
           "UNKNOWN_FORMAT\\0"
+          "UNKNOWN_MESSAGE_DIGEST_ALGORITHM\\0"
+          "UNKNOWN_SIGNATURE_ALGORITHM\\0"
           "UNKNOWN_TAG\\0"
           "UNSUPPORTED_ANY_DEFINED_BY_TYPE\\0"
           "UNSUPPORTED_PUBLIC_KEY_TYPE\\0"
           "UNSUPPORTED_TYPE\\0"
+          "WRONG_PUBLIC_KEY_TYPE\\0"
           "WRONG_TAG\\0"
           "WRONG_TYPE\\0"
           "BAD_FOPEN_MODE\\0"
@@ -969,6 +1039,7 @@ Pod::Spec.new do |s|
           "MODULUS_TOO_LARGE\\0"
           "NO_PRIVATE_VALUE\\0"
           "BAD_Q_VALUE\\0"
+          "BAD_VERSION\\0"
           "MISSING_PARAMETERS\\0"
           "NEED_NEW_SETUP_VALUES\\0"
           "BIGNUM_OUT_OF_RANGE\\0"
@@ -976,8 +1047,10 @@ Pod::Spec.new do |s|
           "D2I_ECPKPARAMETERS_FAILURE\\0"
           "EC_GROUP_NEW_BY_NAME_FAILURE\\0"
           "GROUP2PKPARAMETERS_FAILURE\\0"
+          "GROUP_MISMATCH\\0"
           "I2D_ECPKPARAMETERS_FAILURE\\0"
           "INCOMPATIBLE_OBJECTS\\0"
+          "INVALID_COFACTOR\\0"
           "INVALID_COMPRESSED_POINT\\0"
           "INVALID_COMPRESSION_BIT\\0"
           "INVALID_ENCODING\\0"
@@ -1002,27 +1075,19 @@ Pod::Spec.new do |s|
           "NOT_IMPLEMENTED\\0"
           "RANDOM_NUMBER_GENERATION_FAILED\\0"
           "OPERATION_NOT_SUPPORTED\\0"
-          "BN_DECODE_ERROR\\0"
           "COMMAND_NOT_SUPPORTED\\0"
-          "CONTEXT_NOT_INITIALISED\\0"
           "DIFFERENT_KEY_TYPES\\0"
           "DIFFERENT_PARAMETERS\\0"
-          "DIGEST_AND_KEY_TYPE_NOT_SUPPORTED\\0"
           "EXPECTING_AN_EC_KEY_KEY\\0"
           "EXPECTING_AN_RSA_KEY\\0"
-          "EXPECTING_A_DH_KEY\\0"
           "EXPECTING_A_DSA_KEY\\0"
           "ILLEGAL_OR_UNSUPPORTED_PADDING_MODE\\0"
-          "INVALID_CURVE\\0"
           "INVALID_DIGEST_LENGTH\\0"
           "INVALID_DIGEST_TYPE\\0"
           "INVALID_KEYBITS\\0"
           "INVALID_MGF1_MD\\0"
           "INVALID_PADDING_MODE\\0"
-          "INVALID_PSS_PARAMETERS\\0"
           "INVALID_PSS_SALTLEN\\0"
-          "INVALID_SALT_LENGTH\\0"
-          "INVALID_TRAILER\\0"
           "KEYS_NOT_SET\\0"
           "NO_DEFAULT_DIGEST\\0"
           "NO_KEY_SET\\0"
@@ -1032,17 +1097,8 @@ Pod::Spec.new do |s|
           "NO_PARAMETERS_SET\\0"
           "OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE\\0"
           "OPERATON_NOT_INITIALIZED\\0"
-          "PARAMETER_ENCODING_ERROR\\0"
-          "UNKNOWN_DIGEST\\0"
-          "UNKNOWN_MASK_DIGEST\\0"
-          "UNKNOWN_MESSAGE_DIGEST_ALGORITHM\\0"
           "UNKNOWN_PUBLIC_KEY_TYPE\\0"
-          "UNKNOWN_SIGNATURE_ALGORITHM\\0"
           "UNSUPPORTED_ALGORITHM\\0"
-          "UNSUPPORTED_MASK_ALGORITHM\\0"
-          "UNSUPPORTED_MASK_PARAMETER\\0"
-          "UNSUPPORTED_SIGNATURE_TYPE\\0"
-          "WRONG_PUBLIC_KEY_TYPE\\0"
           "OUTPUT_TOO_LARGE\\0"
           "UNKNOWN_NID\\0"
           "BAD_BASE64_DECODE\\0"
@@ -1078,13 +1134,13 @@ Pod::Spec.new do |s|
           "UNKNOWN_ALGORITHM\\0"
           "UNKNOWN_CIPHER\\0"
           "UNKNOWN_CIPHER_ALGORITHM\\0"
+          "UNKNOWN_DIGEST\\0"
           "UNKNOWN_HASH\\0"
           "UNSUPPORTED_PRIVATE_KEY_ALGORITHM\\0"
           "BAD_E_VALUE\\0"
           "BAD_FIXED_HEADER_DECRYPT\\0"
           "BAD_PAD_BYTE_COUNT\\0"
           "BAD_RSA_PARAMETERS\\0"
-          "BAD_VERSION\\0"
           "BLOCK_TYPE_IS_NOT_01\\0"
           "BN_NOT_INITIALIZED\\0"
           "CANNOT_RECOVER_MULTI_PRIME_KEY\\0"
@@ -1129,7 +1185,6 @@ Pod::Spec.new do |s|
           "BAD_DIGEST_LENGTH\\0"
           "BAD_ECC_CERT\\0"
           "BAD_ECPOINT\\0"
-          "BAD_HANDSHAKE_LENGTH\\0"
           "BAD_HANDSHAKE_RECORD\\0"
           "BAD_HELLO_REQUEST\\0"
           "BAD_LENGTH\\0"
@@ -1140,7 +1195,6 @@ Pod::Spec.new do |s|
           "BAD_SSL_FILETYPE\\0"
           "BAD_WRITE_RETRY\\0"
           "BIO_NOT_SET\\0"
-          "CANNOT_SERIALIZE_PUBLIC_KEY\\0"
           "CA_DN_LENGTH_MISMATCH\\0"
           "CA_DN_TOO_LONG\\0"
           "CCS_RECEIVED_EARLY\\0"
@@ -1149,17 +1203,12 @@ Pod::Spec.new do |s|
           "CERT_LENGTH_MISMATCH\\0"
           "CHANNEL_ID_NOT_P256\\0"
           "CHANNEL_ID_SIGNATURE_INVALID\\0"
-          "CIPHER_CODE_WRONG_LENGTH\\0"
           "CIPHER_OR_HASH_UNAVAILABLE\\0"
           "CLIENTHELLO_PARSE_FAILED\\0"
           "CLIENTHELLO_TLSEXT\\0"
           "CONNECTION_REJECTED\\0"
           "CONNECTION_TYPE_NOT_SET\\0"
-          "COOKIE_MISMATCH\\0"
-          "CUSTOM_EXTENSION_CONTENTS_TOO_LARGE\\0"
           "CUSTOM_EXTENSION_ERROR\\0"
-          "D2I_ECDSA_SIG\\0"
-          "DATA_BETWEEN_CCS_AND_FINISHED\\0"
           "DATA_LENGTH_TOO_LONG\\0"
           "DECRYPTION_FAILED\\0"
           "DECRYPTION_FAILED_OR_BAD_RECORD_MAC\\0"
@@ -1168,38 +1217,28 @@ Pod::Spec.new do |s|
           "DIGEST_CHECK_FAILED\\0"
           "DTLS_MESSAGE_TOO_BIG\\0"
           "ECC_CERT_NOT_FOR_SIGNING\\0"
-          "EMPTY_SRTP_PROTECTION_PROFILE_LIST\\0"
           "EMS_STATE_INCONSISTENT\\0"
           "ENCRYPTED_LENGTH_TOO_LONG\\0"
           "ERROR_ADDING_EXTENSION\\0"
           "ERROR_IN_RECEIVED_CIPHER_LIST\\0"
           "ERROR_PARSING_EXTENSION\\0"
-          "EVP_DIGESTSIGNFINAL_FAILED\\0"
-          "EVP_DIGESTSIGNINIT_FAILED\\0"
           "EXCESSIVE_MESSAGE_SIZE\\0"
           "EXTRA_DATA_IN_MESSAGE\\0"
           "FRAGMENT_MISMATCH\\0"
-          "GOT_A_FIN_BEFORE_A_CCS\\0"
-          "GOT_CHANNEL_ID_BEFORE_A_CCS\\0"
-          "GOT_NEXT_PROTO_BEFORE_A_CCS\\0"
           "GOT_NEXT_PROTO_WITHOUT_EXTENSION\\0"
           "HANDSHAKE_FAILURE_ON_CLIENT_HELLO\\0"
-          "HANDSHAKE_RECORD_BEFORE_CCS\\0"
           "HTTPS_PROXY_REQUEST\\0"
           "HTTP_REQUEST\\0"
           "INAPPROPRIATE_FALLBACK\\0"
           "INVALID_COMMAND\\0"
           "INVALID_MESSAGE\\0"
+          "INVALID_OUTER_RECORD_TYPE\\0"
           "INVALID_SSL_SESSION\\0"
           "INVALID_TICKET_KEYS_LENGTH\\0"
           "LENGTH_MISMATCH\\0"
           "LIBRARY_HAS_NO_CIPHERS\\0"
-          "MISSING_DH_KEY\\0"
-          "MISSING_ECDSA_SIGNING_CERT\\0"
           "MISSING_EXTENSION\\0"
           "MISSING_RSA_CERTIFICATE\\0"
-          "MISSING_RSA_ENCRYPTING_CERT\\0"
-          "MISSING_RSA_SIGNING_CERT\\0"
           "MISSING_TMP_DH_KEY\\0"
           "MISSING_TMP_ECDH_KEY\\0"
           "MIXED_SPECIAL_OPERATOR_WITH_GROUPS\\0"
@@ -1211,7 +1250,6 @@ Pod::Spec.new do |s|
           "NO_CERTIFICATE_SET\\0"
           "NO_CIPHERS_AVAILABLE\\0"
           "NO_CIPHERS_PASSED\\0"
-          "NO_CIPHERS_SPECIFIED\\0"
           "NO_CIPHER_MATCH\\0"
           "NO_COMPRESSION_SPECIFIED\\0"
           "NO_METHOD_SPECIFIED\\0"
@@ -1220,13 +1258,10 @@ Pod::Spec.new do |s|
           "NO_RENEGOTIATION\\0"
           "NO_REQUIRED_DIGEST\\0"
           "NO_SHARED_CIPHER\\0"
-          "NO_SHARED_SIGATURE_ALGORITHMS\\0"
-          "NO_SRTP_PROFILES\\0"
           "NULL_SSL_CTX\\0"
           "NULL_SSL_METHOD_PASSED\\0"
           "OLD_SESSION_CIPHER_NOT_RETURNED\\0"
           "OLD_SESSION_VERSION_NOT_RETURNED\\0"
-          "PACKET_LENGTH_TOO_LONG\\0"
           "PARSE_TLSEXT\\0"
           "PATH_TOO_LONG\\0"
           "PEER_DID_NOT_RETURN_A_CERTIFICATE\\0"
@@ -1235,11 +1270,9 @@ Pod::Spec.new do |s|
           "PSK_IDENTITY_NOT_FOUND\\0"
           "PSK_NO_CLIENT_CB\\0"
           "PSK_NO_SERVER_CB\\0"
-          "READ_BIO_NOT_SET\\0"
           "READ_TIMEOUT_EXPIRED\\0"
           "RECORD_LENGTH_MISMATCH\\0"
           "RECORD_TOO_LARGE\\0"
-          "RENEGOTIATE_EXT_TOO_LONG\\0"
           "RENEGOTIATION_ENCODING_ERR\\0"
           "RENEGOTIATION_MISMATCH\\0"
           "REQUIRED_CIPHER_MISSING\\0"
@@ -1249,13 +1282,11 @@ Pod::Spec.new do |s|
           "SERVERHELLO_TLSEXT\\0"
           "SESSION_ID_CONTEXT_UNINITIALIZED\\0"
           "SESSION_MAY_NOT_BE_CREATED\\0"
-          "SIGNATURE_ALGORITHMS_ERROR\\0"
+          "SHUTDOWN_WHILE_IN_INIT\\0"
           "SIGNATURE_ALGORITHMS_EXTENSION_SENT_BY_SERVER\\0"
           "SRTP_COULD_NOT_ALLOCATE_PROFILES\\0"
-          "SRTP_PROTECTION_PROFILE_LIST_TOO_LONG\\0"
           "SRTP_UNKNOWN_PROTECTION_PROFILE\\0"
           "SSL3_EXT_INVALID_SERVERNAME\\0"
-          "SSL3_EXT_INVALID_SERVERNAME_TYPE\\0"
           "SSLV3_ALERT_BAD_CERTIFICATE\\0"
           "SSLV3_ALERT_BAD_RECORD_MAC\\0"
           "SSLV3_ALERT_CERTIFICATE_EXPIRED\\0"
@@ -1270,10 +1301,7 @@ Pod::Spec.new do |s|
           "SSLV3_ALERT_UNSUPPORTED_CERTIFICATE\\0"
           "SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION\\0"
           "SSL_HANDSHAKE_FAILURE\\0"
-          "SSL_SESSION_ID_CALLBACK_FAILED\\0"
-          "SSL_SESSION_ID_CONFLICT\\0"
           "SSL_SESSION_ID_CONTEXT_TOO_LONG\\0"
-          "SSL_SESSION_ID_HAS_BAD_LENGTH\\0"
           "TLSV1_ALERT_ACCESS_DENIED\\0"
           "TLSV1_ALERT_DECODE_ERROR\\0"
           "TLSV1_ALERT_DECRYPTION_FAILED\\0"
@@ -1292,17 +1320,12 @@ Pod::Spec.new do |s|
           "TLSV1_CERTIFICATE_UNOBTAINABLE\\0"
           "TLSV1_UNRECOGNIZED_NAME\\0"
           "TLSV1_UNSUPPORTED_EXTENSION\\0"
-          "TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER\\0"
-          "TLS_ILLEGAL_EXPORTER_LABEL\\0"
-          "TLS_INVALID_ECPOINTFORMAT_LIST\\0"
           "TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST\\0"
           "TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG\\0"
           "TOO_MANY_EMPTY_FRAGMENTS\\0"
           "TOO_MANY_WARNING_ALERTS\\0"
           "UNABLE_TO_FIND_ECDH_PARAMETERS\\0"
-          "UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS\\0"
           "UNEXPECTED_EXTENSION\\0"
-          "UNEXPECTED_GROUP_CLOSE\\0"
           "UNEXPECTED_MESSAGE\\0"
           "UNEXPECTED_OPERATOR_IN_GROUP\\0"
           "UNEXPECTED_RECORD\\0"
@@ -1314,13 +1337,10 @@ Pod::Spec.new do |s|
           "UNKNOWN_PROTOCOL\\0"
           "UNKNOWN_SSL_VERSION\\0"
           "UNKNOWN_STATE\\0"
-          "UNPROCESSED_HANDSHAKE_DATA\\0"
           "UNSAFE_LEGACY_RENEGOTIATION_DISABLED\\0"
           "UNSUPPORTED_COMPRESSION_ALGORITHM\\0"
           "UNSUPPORTED_ELLIPTIC_CURVE\\0"
           "UNSUPPORTED_PROTOCOL\\0"
-          "UNSUPPORTED_SSL_VERSION\\0"
-          "USE_SRTP_NOT_NEGOTIATED\\0"
           "WRONG_CERTIFICATE_TYPE\\0"
           "WRONG_CIPHER_RETURNED\\0"
           "WRONG_CURVE\\0"
@@ -1341,12 +1361,14 @@ Pod::Spec.new do |s|
           "IDP_MISMATCH\\0"
           "INVALID_DIRECTORY\\0"
           "INVALID_FIELD_NAME\\0"
+          "INVALID_PSS_PARAMETERS\\0"
           "INVALID_TRUST\\0"
           "ISSUER_MISMATCH\\0"
           "KEY_TYPE_MISMATCH\\0"
           "KEY_VALUES_MISMATCH\\0"
           "LOADING_CERT_DIR\\0"
           "LOADING_DEFAULTS\\0"
+          "NAME_TOO_LONG\\0"
           "NEWER_CRL_NOT_NEWER\\0"
           "NOT_PKCS7_SIGNED_DATA\\0"
           "NO_CERTIFICATES_INCLUDED\\0"
@@ -1356,8 +1378,6 @@ Pod::Spec.new do |s|
           "PUBLIC_KEY_DECODE_ERROR\\0"
           "PUBLIC_KEY_ENCODE_ERROR\\0"
           "SHOULD_RETRY\\0"
-          "UNABLE_TO_FIND_PARAMETERS_IN_CHAIN\\0"
-          "UNABLE_TO_GET_CERTS_PUBLIC_KEY\\0"
           "UNKNOWN_KEY_TYPE\\0"
           "UNKNOWN_PURPOSE_ID\\0"
           "UNKNOWN_TRUST_ID\\0"
diff --git a/src/objective-c/CronetFramework.podspec b/src/objective-c/CronetFramework.podspec
index 20af7647f70c1d583fe9e7a51182a6cf37c57923..3ebcacf05541fb6dcb84b6c8f10d8da10b78ab01 100644
--- a/src/objective-c/CronetFramework.podspec
+++ b/src/objective-c/CronetFramework.podspec
@@ -36,7 +36,7 @@ Pod::Spec.new do |s|
   s.license      = { :type => 'BSD' }
   s.vendored_framework = "Cronet.framework"
   s.author             = "The Chromium Authors"
-  s.ios.deployment_target = "8.0"
+  s.ios.deployment_target = "7.1"
   s.source       = { :http => 'https://storage.googleapis.com/grpc-precompiled-binaries/cronet/Cronet.framework.zip' }
   s.preserve_paths = "Cronet.framework"
   s.public_header_files = "Cronet.framework/Headers/**/*{.h}"
diff --git a/src/objective-c/GRPCClient/GRPCCall.m b/src/objective-c/GRPCClient/GRPCCall.m
index e9678f38a9c46604779b7927f95dbfaeddcff962..da9473f9a2734b64ed23d0211a97a05bedca5354 100644
--- a/src/objective-c/GRPCClient/GRPCCall.m
+++ b/src/objective-c/GRPCClient/GRPCCall.m
@@ -377,6 +377,7 @@ NSString * const kGRPCTrailersKey = @"io.grpc.TrailersKey";
       [strongSelf finishWithError:[NSError errorWithDomain:kGRPCErrorDomain
                                                       code:GRPCErrorCodeUnavailable
                                                   userInfo:@{NSLocalizedDescriptionKey: @"Connectivity lost."}]];
+      [[GRPCHost hostWithAddress:strongSelf->_host] disconnect];
     }
   }];
 }
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
index a3fa5938cdd79fd54b7c64d4652e1785f7751ef7..97f6b893407a42420d1524ab0029ce1386bfebfc 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
@@ -252,7 +252,7 @@
 
     // Each completion queue consumes one thread. There's a trade to be made between creating and
     // consuming too many threads and having contention of multiple calls in a single completion
-    // queue. Currently we favor latency and use one per call.
+    // queue. Currently we use a singleton queue.
     _queue = [GRPCCompletionQueue completionQueue];
 
     _call = [[GRPCHost hostWithAddress:host] unmanagedCallWithPath:path completionQueue:_queue];
diff --git a/src/objective-c/ProtoRPC/ProtoRPC.m b/src/objective-c/ProtoRPC/ProtoRPC.m
index fb0b566f199eb9e91a1cf758f76a69bc81ee9830..e7232f268322c658bea1d86e9c15380b0dd73734 100644
--- a/src/objective-c/ProtoRPC/ProtoRPC.m
+++ b/src/objective-c/ProtoRPC/ProtoRPC.m
@@ -33,7 +33,7 @@
 
 #import "ProtoRPC.h"
 
-#import <GPBProtocolBuffers.h>
+#import <Protobuf/GPBProtocolBuffers.h>
 #import <RxLibrary/GRXWriteable.h>
 #import <RxLibrary/GRXWriter+Transformations.h>
 
diff --git a/src/objective-c/README.md b/src/objective-c/README.md
index 30d9aad64cdf419dea86a95b3ea358b08abd5623..736c324ca95b9acc2dd6d9e80f0818f2f4f4b546 100644
--- a/src/objective-c/README.md
+++ b/src/objective-c/README.md
@@ -47,6 +47,10 @@ Pod::Spec.new do |s|
   s.name     = '<Podspec file name>'
   s.version  = '0.0.1'
   s.license  = '...'
+  s.authors  = { '<your name>' => '<your email>' }
+  s.homepage = '...'
+  s.summary = '...'
+  s.source = { :git => 'https://github.com/...' }
 
   s.ios.deployment_target = '7.1'
   s.osx.deployment_target = '10.9'
@@ -60,7 +64,11 @@ Pod::Spec.new do |s|
     ms.source_files = "*.pbobjc.{h,m}"
     ms.header_mappings_dir = "."
     ms.requires_arc = false
-    ms.dependency "Protobuf", "~> 3.0.0-alpha-4"
+    ms.dependency "Protobuf", "~> 3.0.0-beta-2"
+    # This is needed by all pods that depend on Protobuf:
+    ms.pod_target_xcconfig = {
+      'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1',
+    }
   end
 
   # The --objcgrpc_out plugin generates a pair of .pbrpc.h/.pbrpc.m files for each .proto file with
@@ -69,7 +77,7 @@ Pod::Spec.new do |s|
     ss.source_files = "*.pbrpc.{h,m}"
     ss.header_mappings_dir = "."
     ss.requires_arc = true
-    ss.dependency "gRPC", "~> 0.12"
+    ss.dependency "gRPC-ProtoRPC", "~> 0.14"
     ss.dependency "#{s.name}/Messages"
   end
 end
diff --git a/src/objective-c/examples/RemoteTestClient/RemoteTest.podspec b/src/objective-c/examples/RemoteTestClient/RemoteTest.podspec
index 107e6de4e21067fac31f597c8dc9c08cbed90996..e3b50ddea50016f9ef90627aeb6786fbcff0f779 100644
--- a/src/objective-c/examples/RemoteTestClient/RemoteTest.podspec
+++ b/src/objective-c/examples/RemoteTestClient/RemoteTest.podspec
@@ -1,10 +1,10 @@
 Pod::Spec.new do |s|
-  s.name     = "RemoteTest"
-  s.version  = "0.0.1"
-  s.license  = "New BSD"
+  s.name     = 'RemoteTest'
+  s.version  = '0.0.1'
+  s.license  = 'New BSD'
   s.authors  = { 'gRPC contributors' => 'grpc-io@googlegroups.com' }
-  s.homepage = "http://www.grpc.io/"
-  s.summary = "RemoteTest example"
+  s.homepage = 'http://www.grpc.io/'
+  s.summary = 'RemoteTest example'
   s.source = { :git => 'https://github.com/grpc/grpc.git' }
 
   s.ios.deployment_target = '7.1'
@@ -15,18 +15,22 @@ Pod::Spec.new do |s|
     protoc --objc_out=. --objcgrpc_out=. *.proto
   CMD
 
-  s.subspec "Messages" do |ms|
-    ms.source_files = "*.pbobjc.{h,m}"
-    ms.header_mappings_dir = "."
+  s.subspec 'Messages' do |ms|
+    ms.source_files = '*.pbobjc.{h,m}'
+    ms.header_mappings_dir = '.'
     ms.requires_arc = false
-    ms.dependency "Protobuf", "~> 3.0.0-alpha-4"
+    ms.dependency 'Protobuf', '~> 3.0.0-beta-3.1'
+    # This is needed by all pods that depend on Protobuf:
+    ms.pod_target_xcconfig = {
+      'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1',
+    }
   end
 
-  s.subspec "Services" do |ss|
-    ss.source_files = "*.pbrpc.{h,m}"
-    ss.header_mappings_dir = "."
+  s.subspec 'Services' do |ss|
+    ss.source_files = '*.pbrpc.{h,m}'
+    ss.header_mappings_dir = '.'
     ss.requires_arc = true
-    ss.dependency "gRPC", "~> 0.12"
+    ss.dependency 'gRPC-ProtoRPC', '~> 0.14'
     ss.dependency "#{s.name}/Messages"
   end
 end
diff --git a/src/objective-c/examples/Sample/Podfile b/src/objective-c/examples/Sample/Podfile
index 93859fb73403e624b5c78874a1d5c8154d579fab..80ab2c320d4896ed8b9e52a3d33b9e63625b3add 100644
--- a/src/objective-c/examples/Sample/Podfile
+++ b/src/objective-c/examples/Sample/Podfile
@@ -1,10 +1,43 @@
 source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 
-pod 'Protobuf', :path => "../../../../third_party/protobuf"
-pod 'BoringSSL', :podspec => "../.."
-pod 'gRPC', :path => "../../../.."
-pod 'RemoteTest', :path => "../RemoteTestClient"
+install! 'cocoapods', :deterministic_uuids => false
+
+# Location of gRPC's repo root relative to this file.
+GRPC_LOCAL_SRC = '../../../..'
 
 target 'Sample' do
+  # Depend on the generated RemoteTestClient library
+  pod 'RemoteTest', :path => "../RemoteTestClient"
+
+  # Use the local versions of Protobuf, BoringSSL, and gRPC. You don't need any of the following
+  # lines in your application.
+  pod 'Protobuf', :path => "#{GRPC_LOCAL_SRC}/third_party/protobuf"
+
+  pod 'BoringSSL', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c"
+
+  pod 'gRPC', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-Core', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-RxLibrary', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-ProtoRPC',  :path => GRPC_LOCAL_SRC
+end
+
+# This pre_install hook is only needed to use the local version of gRPC-Core. You don't need it in
+# your application.
+pre_install do |installer|
+  # This is the gRPC-Core podspec object, as initialized by its podspec file.
+  grpc_core_spec = installer.pod_targets.find{|t| t.name == 'gRPC-Core'}.root_spec
+
+  # Copied from gRPC-Core.podspec, except for the adjusted src_root:
+  src_root = "$(PODS_ROOT)/../#{GRPC_LOCAL_SRC}"
+  grpc_core_spec.pod_target_xcconfig = {
+    'GRPC_SRC_ROOT' => src_root,
+    'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
+    'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
+    # If we don't set these two settings, `include/grpc/support/time.h` and
+    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # build.
+    'USE_HEADERMAP' => 'NO',
+    'ALWAYS_SEARCH_USER_PATHS' => 'NO',
+  }
 end
diff --git a/src/objective-c/examples/SwiftSample/Podfile b/src/objective-c/examples/SwiftSample/Podfile
index f2df4a34a34f8adb39fce609146328f2ccc91d5b..b675fd29ef532f7ab09655c5858f093017578874 100644
--- a/src/objective-c/examples/SwiftSample/Podfile
+++ b/src/objective-c/examples/SwiftSample/Podfile
@@ -1,10 +1,43 @@
 source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 
-pod 'Protobuf', :path => "../../../../third_party/protobuf"
-pod 'BoringSSL', :podspec => "../.."
-pod 'gRPC', :path => "../../../.."
-pod 'RemoteTest', :path => "../RemoteTestClient"
+install! 'cocoapods', :deterministic_uuids => false
+
+# Location of gRPC's repo root relative to this file.
+GRPC_LOCAL_SRC = '../../../..'
 
 target 'SwiftSample' do
+  # Depend on the generated RemoteTestClient library
+  pod 'RemoteTest', :path => "../RemoteTestClient"
+
+  # Use the local versions of Protobuf, BoringSSL, and gRPC. You don't need any of the following
+  # lines in your application.
+  pod 'Protobuf', :path => "#{GRPC_LOCAL_SRC}/third_party/protobuf"
+
+  pod 'BoringSSL', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c"
+
+  pod 'gRPC', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-Core', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-RxLibrary', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-ProtoRPC',  :path => GRPC_LOCAL_SRC
+end
+
+# This pre_install hook is only needed to use the local version of gRPC-Core. You don't need it in
+# your application.
+pre_install do |installer|
+  # This is the gRPC-Core podspec object, as initialized by its podspec file.
+  grpc_core_spec = installer.pod_targets.find{|t| t.name == 'gRPC-Core'}.root_spec
+
+  # Copied from gRPC-Core.podspec, except for the adjusted src_root:
+  src_root = "$(PODS_ROOT)/../#{GRPC_LOCAL_SRC}"
+  grpc_core_spec.pod_target_xcconfig = {
+    'GRPC_SRC_ROOT' => src_root,
+    'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
+    'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
+    # If we don't set these two settings, `include/grpc/support/time.h` and
+    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # build.
+    'USE_HEADERMAP' => 'NO',
+    'ALWAYS_SEARCH_USER_PATHS' => 'NO',
+  }
 end
diff --git a/src/objective-c/tests/Podfile b/src/objective-c/tests/Podfile
index 6d5f94cbda148810c4c0a494618c6da3c0833b85..30a34260d407cb787f8bebd370515d5a042c90a5 100644
--- a/src/objective-c/tests/Podfile
+++ b/src/objective-c/tests/Podfile
@@ -3,36 +3,59 @@ platform :ios, '8.0'
 
 install! 'cocoapods', :deterministic_uuids => false
 
-def shared_pods
-  pod 'Protobuf', :path => "../../../third_party/protobuf", :inhibit_warnings => true
-  pod 'BoringSSL', :podspec => "..", :inhibit_warnings => true
-  pod 'CronetFramework', :podspec => ".."
-  pod 'gRPC', :path => "../../.."
-  pod 'RemoteTest', :path => "RemoteTestClient"
-end
-
-target 'Tests' do
-	shared_pods
-end
-
-target 'AllTests' do
-	shared_pods
-end
+# Location of gRPC's repo root relative to this file.
+GRPC_LOCAL_SRC = '../../..'
 
-target 'RxLibraryUnitTests' do
-	shared_pods
-end
-
-target 'InteropTestsRemote' do
-	shared_pods
+# Install the dependencies in the main target plus all test targets.
+%w(
+  Tests
+  AllTests
+  RxLibraryUnitTests
+  InteropTestsRemote
+  InteropTestsLocalSSL
+  InteropTestsLocalCleartext
+).each do |target_name|
+  target target_name do
+    pod 'Protobuf', :path => "#{GRPC_LOCAL_SRC}/third_party/protobuf", :inhibit_warnings => true
+    pod 'BoringSSL', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c", :inhibit_warnings => true
+    pod 'CronetFramework', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c"
+    pod 'gRPC', :path => GRPC_LOCAL_SRC
+    pod 'gRPC-Core', :path => GRPC_LOCAL_SRC
+    pod 'gRPC-RxLibrary', :path => GRPC_LOCAL_SRC
+    pod 'gRPC-ProtoRPC',  :path => GRPC_LOCAL_SRC
+    pod 'RemoteTest', :path => "RemoteTestClient"
+  end
 end
 
-target 'InteropTestsLocalSSL' do
-	shared_pods
-end
+# gRPC-Core.podspec needs to be modified to be successfully used for local development. A Podfile's
+# pre_install hook lets us do that. The block passed to it runs after the podspecs are downloaded
+# and before they are installed in the user project.
+#
+# This podspec searches for the gRPC core library headers under "$(PODS_ROOT)/gRPC-Core", where
+# Cocoapods normally places the downloaded sources. When doing local development of the libraries,
+# though, Cocoapods just takes the sources from whatever directory was specified using `:path`, and
+# doesn't copy them under $(PODS_ROOT). When using static libraries, one can sometimes rely on the
+# symbolic links to the pods headers that Cocoapods creates under "$(PODS_ROOT)/Headers". But those
+# aren't created when using dynamic frameworks. So our solution is to modify the podspec on the fly
+# to point at the local directory where the sources are.
+#
+# TODO(jcanizales): Send a PR to Cocoapods to get rid of this need.
+pre_install do |installer|
+  # This is the gRPC-Core podspec object, as initialized by its podspec file.
+  grpc_core_spec = installer.pod_targets.find{|t| t.name == 'gRPC-Core'}.root_spec
 
-target 'InteropTestsLocalCleartext' do
-	shared_pods
+  # Copied from gRPC-Core.podspec, except for the adjusted src_root:
+  src_root = "$(PODS_ROOT)/../#{GRPC_LOCAL_SRC}"
+  grpc_core_spec.pod_target_xcconfig = {
+    'GRPC_SRC_ROOT' => src_root,
+    'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
+    'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
+    # If we don't set these two settings, `include/grpc/support/time.h` and
+    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # build.
+    'USE_HEADERMAP' => 'NO',
+    'ALWAYS_SEARCH_USER_PATHS' => 'NO',
+  }
 end
 
 post_install do |installer|
@@ -40,7 +63,7 @@ post_install do |installer|
     target.build_configurations.each do |config|
       config.build_settings['GCC_TREAT_WARNINGS_AS_ERRORS'] = 'YES'
     end
-    if target.name == 'gRPC'
+    if target.name == 'gRPC-Core'
       target.build_configurations.each do |config|
         # TODO(zyc) Remove this setting after the issue is resolved
         # GPR_UNREACHABLE_CODE causes "Control may reach end of non-void
diff --git a/src/objective-c/tests/RemoteTestClient/RemoteTest.podspec b/src/objective-c/tests/RemoteTestClient/RemoteTest.podspec
index e1fd9910389565b90b2e6f729cd063933c67b865..887380eb55f4621a06b8481ba27bd8914a80ffcb 100644
--- a/src/objective-c/tests/RemoteTestClient/RemoteTest.podspec
+++ b/src/objective-c/tests/RemoteTestClient/RemoteTest.podspec
@@ -22,14 +22,18 @@ Pod::Spec.new do |s|
     ms.source_files = "*.pbobjc.{h,m}"
     ms.header_mappings_dir = "."
     ms.requires_arc = false
-    ms.dependency "Protobuf", "~> 3.0.0-alpha-4"
+    ms.dependency "Protobuf", "~> 3.0.0-beta-3.1"
+    # This is needed by all pods that depend on Protobuf:
+    ms.pod_target_xcconfig = {
+      'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1',
+    }
   end
 
   s.subspec "Services" do |ss|
     ss.source_files = "*.pbrpc.{h,m}"
     ss.header_mappings_dir = "."
     ss.requires_arc = true
-    ss.dependency "gRPC", "~> 0.12"
+    ss.dependency "gRPC-ProtoRPC", "~> 0.14"
     ss.dependency "#{s.name}/Messages"
   end
 end
diff --git a/src/php/composer.json b/src/php/composer.json
index 01674a25db8168143d0e255e2c8f9e7eca5ce1d7..2ad73223c65bdbb3360eb95bd20e7e81b72d0fa3 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 2bf9e003050a522aed1d7ce00c3ac3b0c92ff7f3..3be1429f13c61b86ddef3da8cbec0e026ecc74cd 100644
--- a/src/php/ext/grpc/byte_buffer.c
+++ b/src/php/ext/grpc/byte_buffer.c
@@ -65,15 +65,13 @@ void byte_buffer_to_string(grpc_byte_buffer *buffer, char **out_string,
     *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 f4cb5b28cc8c5e874a24b9f991b6646d16cc8df8..449ba3cd47b8c7d51d296ab3ba0822114626c2fa 100644
--- a/src/php/ext/grpc/php_grpc.c
+++ b/src/php/ext/grpc/php_grpc.c
@@ -248,6 +248,8 @@ PHP_MSHUTDOWN_FUNCTION(grpc) {
   /* 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/grpc/__init__.py b/src/python/grpcio/grpc/__init__.py
index b3eeaad1f7396c5471647bc5373bc1ca7a471520..0efd233d79afa70885dc886b40f1b88641ee96f6 100644
--- a/src/python/grpcio/grpc/__init__.py
+++ b/src/python/grpcio/grpc/__init__.py
@@ -1091,37 +1091,41 @@ def access_token_call_credentials(access_token):
       _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(
diff --git a/src/python/grpcio/grpc/_channel.py b/src/python/grpcio/grpc/_channel.py
index a89b5013030575acc20db670e47b61bdd7c4cfc8..29dbc3a668ba5414f6a2b49a1644dad746c2947f 100644
--- a/src/python/grpcio/grpc/_channel.py
+++ b/src/python/grpcio/grpc/_channel.py
@@ -195,7 +195,8 @@ def _consume_request_iterator(
                 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 @@ def _consume_request_iterator(
         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 @@ class _Rendezvous(grpc.RpcError, grpc.Future, grpc.Call):
       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 @@ class _UnaryUnaryMultiCallable(grpc.UnaryUnaryMultiCallable):
           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 @@ class _UnaryUnaryMultiCallable(grpc.UnaryUnaryMultiCallable):
         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 @@ class _UnaryStreamMultiCallable(grpc.UnaryStreamMultiCallable):
         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 @@ class _UnaryStreamMultiCallable(grpc.UnaryStreamMultiCallable):
             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 @@ class _StreamUnaryMultiCallable(grpc.StreamUnaryMultiCallable):
     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 @@ class _StreamUnaryMultiCallable(grpc.StreamUnaryMultiCallable):
           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 @@ class _StreamUnaryMultiCallable(grpc.StreamUnaryMultiCallable):
       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 @@ class _StreamUnaryMultiCallable(grpc.StreamUnaryMultiCallable):
           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 @@ class _StreamStreamMultiCallable(grpc.StreamStreamMultiCallable):
       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 @@ class _StreamStreamMultiCallable(grpc.StreamStreamMultiCallable):
               _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 0000000000000000000000000000000000000000..9cb5508e27cb65cfd8135d5d0bed5d6a7e12f606
--- /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 a09bbc75fe655dd0221534d7904701caa76a8c2a..6570dcdb8524ee9ff27575a5c1287922dd99dc4e 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 @@ cdef class Call:
     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 @@ cdef class Call:
           <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 0474697af82f18e4fe08788df311caa0c051be07..96c5b02bc2e903d437ba679b49ca3e1420b4956e 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 class Event:
   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/_server.py b/src/python/grpcio/grpc/_server.py
index f4c114056fe65aed34f4ef8cd0dc23c81f5813af..5d805b53e40377ffc05485b7a2c12741cc72e800 100644
--- a/src/python/grpcio/grpc/_server.py
+++ b/src/python/grpcio/grpc/_server.py
@@ -157,7 +157,7 @@ def _abort(state, call, code, details):
               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 @@ class _Context(grpc.ServicerContext):
         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 @@ class _RequestIterator(object):
     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 @@ def _unary_request(rpc_event, state, request_deserializer):
       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 @@ def _send_response(rpc_event, state, serialized_response):
             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 @@ def _status(rpc_event, state, serialized_response):
       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 @@ def _handle_unrecognized_method(rpc_event):
           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_unrecognized_method(rpc_event):
 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))
diff --git a/src/python/grpcio_tests/tests/qps/benchmark_client.py b/src/python/grpcio_tests/tests/qps/benchmark_client.py
index 080281415d470596722d78839e60a560814de35d..83b46c914e7f89d8d8966c29d573d69b6f310413 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 concurrent import futures
 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 @@ class BenchmarkClient:
 
   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 @@ class BenchmarkClient:
 
     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 @@ class BenchmarkClient:
           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 @@ class _SyncStream(object):
 
   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 8cbf480d58bb8798cfd0ed740414f44e66fdd041..2b76b810cdd869dff0f221c50b60a7d42867c27a 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 messages_pb2
 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 @@ class BenchmarkServer(services_pb2.BetaBenchmarkServiceServicer):
       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 16926379a5bca47a5553456a47018af9b784f337..3abf0d08dd9c2cecf0755b4dfc3477f272553e73 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 d41f8377c2a118202707550587212a74e15e760e..932a1ffe2b4b7519d21080eca842c529fa3ea6eb 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 random
 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.qps import histogram
 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 @@ class WorkerServer(services_pb2.BetaWorkerServiceServicer):
       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 @@ class WorkerServer(services_pb2.BetaWorkerServiceServicer):
     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 45eb75b242c52def26440d5268269146635e8669..dcaef0db1fabb4c36bf996854b9817f30d2b987f 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/_credentials_test.py b/src/python/grpcio_tests/tests/unit/_credentials_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..87af85a0b9b01f6ce9bf906c5a1199462d72cf27
--- /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 cac0c8b3b93e447a4204ee051076e7f1d2bede37..cf212c56539a9f69ae58b37c9d55ea1830e21d3e 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 @@ class _Handler(object):
         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 @@ class _Handler(object):
                 _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 @@ class CancelManyCallsTest(unittest.TestCase):
             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 27fcee0d6f17caf6db00a9f65bf6e0050eb5ee4a..152d8edde3b49aa438d04178ae7dac0d61307d91 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 @@ class ReadSomeButNotAllResponsesTest(unittest.TestCase):
     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 @@ class ReadSomeButNotAllResponsesTest(unittest.TestCase):
 
     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 @@ class ReadSomeButNotAllResponsesTest(unittest.TestCase):
     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 b740695e35b1764859f98fd44d1308492148a7f6..9d1dbc189b8b418b01b5d69ce6660da0da68c6bd 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 @@ class ServerClientMixin(object):
     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 @@ class ServerClientMixin(object):
         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 @@ class ServerClientMixin(object):
         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 @@ class ServerClientMixin(object):
     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/test_common.py b/src/python/grpcio_tests/tests/unit/test_common.py
index c8886bf4ca5679d2abfe4d80075b7b0890265110..cd71bd80d75462ad6c14f8bd0280106bd591f93a 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 @@ def metadata_transmitted(original_metadata, transmitted_metadata):
       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/templates/gRPC-Core.podspec.template b/templates/gRPC-Core.podspec.template
new file mode 100644
index 0000000000000000000000000000000000000000..aefe6e965cc24b3505d779de22e407ad8a08b697
--- /dev/null
+++ b/templates/gRPC-Core.podspec.template
@@ -0,0 +1,157 @@
+%YAML 1.2
+--- |
+  # GRPC CocoaPods podspec
+  # This file has been automatically generated from a template file. Please make modifications to
+  # `templates/gRPC-Core.podspec.template` instead. This file can be regenerated from the template by
+  # running `tools/buildgen/generate_projects.sh`.
+
+  # Copyright 2015, Google Inc.
+  # All rights reserved.
+  #
+  # Redistribution and use in source and binary forms, with or without
+  # modification, are permitted provided that the following conditions are
+  # met:
+  #
+  #     * Redistributions of source code must retain the above copyright
+  # notice, this list of conditions and the following disclaimer.
+  #     * Redistributions in binary form must reproduce the above
+  # copyright notice, this list of conditions and the following disclaimer
+  # in the documentation and/or other materials provided with the
+  # distribution.
+  #     * Neither the name of Google Inc. nor the names of its
+  # contributors may be used to endorse or promote products derived from
+  # this software without specific prior written permission.
+  #
+  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+  <%!
+  def grpc_private_files(libs):
+    out = []
+    for lib in libs:
+      if lib.name in ("grpc", "gpr"):
+        out += lib.get('headers', [])
+        out += lib.get('src', [])
+    return out;
+
+  def grpc_public_headers(libs):
+    out = []
+    for lib in libs:
+      if lib.name in ("grpc", "gpr"):
+        out += lib.get('public_headers', [])
+    return out
+
+  def grpc_private_headers(libs):
+    out = []
+    for lib in libs:
+      if lib.name in ("grpc", "gpr"):
+        out += lib.get('headers', [])
+    return out
+
+  def ruby_multiline_list(files, indent):
+    return (',\n' + indent*' ').join('\'%s\'' % f for f in files)
+  %>
+  Pod::Spec.new do |s|
+    s.name     = 'gRPC-Core'
+    version = '0.14.0'
+    s.version  = version
+    s.summary  = 'Core cross-platform gRPC library, written in C'
+    s.homepage = 'http://www.grpc.io'
+    s.license  = 'New BSD'
+    s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
+
+    s.source = {
+      :git => 'https://github.com/grpc/grpc.git',
+      :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}",
+      # TODO(jcanizales): Depend explicitly on the nanopb pod, and disable submodules.
+      :submodules => true,
+    }
+
+    s.ios.deployment_target = '7.1'
+    s.osx.deployment_target = '10.9'
+    s.requires_arc = false
+
+    name = 'grpc'
+
+    # When creating a dynamic framework, name it grpc.framework instead of gRPC-Core.framework.
+    # This lets users write their includes like `#include <grpc/grpc.h>` as opposed to `#include
+    # <gRPC-Core/grpc.h>`.
+    s.module_name = name
+
+    # When creating a dynamic framework, copy the headers under `include/grpc/` into the root of
+    # the `Headers/` directory of the framework (i.e., not under `Headers/include/grpc`).
+    #
+    # TODO(jcanizales): Debug why this doesn't work on macOS.
+    s.header_mappings_dir = 'include/grpc'
+
+    # The above has an undesired effect when creating a static library: It forces users to write
+    # includes like `#include <gRPC-Core/grpc.h>`. `s.header_dir` adds a path prefix to that, and
+    # because Cocoapods lets omit the pod name when including headers of static libraries, the
+    # following lets users write `#include <grpc/grpc.h>`.
+    s.header_dir = name
+
+    # The module map created automatically by Cocoapods doesn't work for C libraries like gRPC-Core.
+    s.module_map = 'include/grpc/module.modulemap'
+
+    # To compile the library, we need the user headers search path (quoted includes) to point to the
+    # root of the repo, and the system headers search path (angled includes) to point to `include/`.
+    # Cocoapods effectively clones the repo under `<Podfile dir>/Pods/gRPC-Core/`, and sets a build
+    # variable called `$(PODS_ROOT)` to `<Podfile dir>/Pods/`, so we use that.
+    #
+    # Relying on the file structure under $(PODS_ROOT) isn't officially supported in Cocoapods, as it
+    # is taken as an implementation detail. We've asked for an alternative, and have been told that
+    # what we're doing should keep working: https://github.com/CocoaPods/CocoaPods/issues/4386
+    #
+    # The `src_root` value of `$(PODS_ROOT)/gRPC-Core` assumes Cocoapods is installing this pod from
+    # its remote repo. For local development of this library, enabled by using `:path` in the Podfile,
+    # that assumption is wrong. In such case, the following settings need to be reset with the
+    # appropriate value of `src_root`. This can be accomplished in the `pre_install` hook of the
+    # Podfile; see `src/objective-c/tests/Podfile` for an example.
+    src_root = '$(PODS_ROOT)/gRPC-Core'
+    s.pod_target_xcconfig = {
+      'GRPC_SRC_ROOT' => src_root,
+      'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
+      'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
+      # If we don't set these two settings, `include/grpc/support/time.h` and
+      # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+      # build.
+      'USE_HEADERMAP' => 'NO',
+      'ALWAYS_SEARCH_USER_PATHS' => 'NO',
+    }
+
+    # Like many other C libraries, gRPC-Core has its public headers under `include/<libname>/` and its
+    # sources and private headers in other directories outside `include/`. Cocoapods' linter doesn't
+    # allow any header to be listed outside the `header_mappings_dir` (even though doing so works in
+    # practice). Because we need our `header_mappings_dir` to be `include/grpc/` for the reason
+    # mentioned above, we work around the linter limitation by dividing the pod into two subspecs, one
+    # for public headers and the other for implementation. Each gets its own `header_mappings_dir`,
+    # making the linter happy.
+    #
+    # The list of source files is generated by a template: `templates/gRPC-Core.podspec.template`. It
+    # can be regenerated from the template by running `tools/buildgen/generate_projects.sh`.
+    s.subspec 'Interface' do |ss|
+      ss.header_mappings_dir = 'include/grpc'
+
+      ss.source_files = ${ruby_multiline_list(grpc_public_headers(libs), 22)}
+    end
+    s.subspec 'Implementation' do |ss|
+      ss.header_mappings_dir = '.'
+      ss.libraries = 'z'
+      ss.dependency "#{s.name}/Interface", version
+      ss.dependency 'BoringSSL', '~> 4.0'
+
+      # To save you from scrolling, this is the last part of the podspec.
+      ss.source_files = ${ruby_multiline_list(grpc_private_files(libs), 22)}
+
+      ss.private_header_files = ${ruby_multiline_list(grpc_private_headers(libs), 30)}
+    end
+  end
diff --git a/templates/gRPC.podspec.template b/templates/gRPC.podspec.template
deleted file mode 100644
index 979cb1ef8e8fbb80e1308b84d315ae0f28538975..0000000000000000000000000000000000000000
--- a/templates/gRPC.podspec.template
+++ /dev/null
@@ -1,130 +0,0 @@
-%YAML 1.2
---- |
-  # GRPC CocoaPods podspec
-  # This file has been automatically generated from a template file.
-  # Please look at the templates directory instead.
-  # This file can be regenerated from the template by running
-  # tools/buildgen/generate_projects.sh
-
-  # Copyright 2015, 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.
-
-  <%!
-  def grpc_files(libs):
-    out = []
-    for lib in libs:
-      if lib.name in ("grpc", "gpr"):
-        out += lib.get('headers', [])
-        out += lib.get('public_headers', [])
-        out += lib.get('src', [])
-    return out;
-  
-  def grpc_private_headers(libs):
-    out = []
-    for lib in libs:
-      if lib.name in ("grpc", "gpr"):
-        out += lib.get('headers', [])
-    return out
-  %>
-  Pod::Spec.new do |s|
-    s.name     = 'gRPC'
-    version = '0.14.0'
-    s.version  = version
-    s.summary  = 'gRPC client library for iOS/OSX'
-    s.homepage = 'http://www.grpc.io'
-    s.license  = 'New BSD'
-    s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
-
-    s.source = { :git => 'https://github.com/grpc/grpc.git',
-                 :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}",
-                 :submodules => true }
-
-  
-    s.ios.deployment_target = '7.1'
-    s.osx.deployment_target = '10.9'
-    s.requires_arc = true
-  
-    objc_dir = 'src/objective-c'
-
-    # Reactive Extensions library for iOS.
-    s.subspec 'RxLibrary' do |ss|
-      src_dir = "#{objc_dir}/RxLibrary"
-      ss.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
-      ss.private_header_files = "#{src_dir}/private/*.h"
-      ss.header_mappings_dir = "#{objc_dir}"
-    end
-
-    # Core cross-platform gRPC library, written in C.
-    s.subspec 'C-Core' do |ss|
-      ss.source_files = ${(',\n' + 22*' ').join('\'%s\'' % f for f in grpc_files(libs))}
-
-      ss.private_header_files = ${(',\n' + 30*' ').join('\'%s\'' % f for f in grpc_private_headers(libs))}
-
-      ss.header_mappings_dir = '.'
-      # This isn't officially supported in Cocoapods. We've asked for an alternative:
-      # https://github.com/CocoaPods/CocoaPods/issues/4386
-      ss.xcconfig = {
-        'USE_HEADERMAP' => 'NO',
-        'ALWAYS_SEARCH_USER_PATHS' => 'NO',
-        'USER_HEADER_SEARCH_PATHS' => '"$(PODS_ROOT)/Headers/Private/gRPC"',
-        'HEADER_SEARCH_PATHS' => '"$(PODS_ROOT)/Headers/Private/gRPC/include"'
-      }
-
-      ss.requires_arc = false
-      ss.libraries = 'z'
-      ss.dependency 'BoringSSL', '~> 3.0'
-
-      # ss.compiler_flags = '-GCC_WARN_INHIBIT_ALL_WARNINGS', '-w'
-    end
-
-    # Objective-C wrapper around the core gRPC library.
-    s.subspec 'GRPCClient' do |ss|
-      src_dir = "#{objc_dir}/GRPCClient"
-      ss.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
-      ss.private_header_files = "#{src_dir}/private/*.h"
-      ss.header_mappings_dir = "#{objc_dir}"
-
-      ss.dependency 'gRPC/C-Core'
-      ss.dependency 'gRPC/RxLibrary'
-
-      # Certificates, to be able to establish TLS connections:
-      ss.resource_bundles = { 'gRPCCertificates' => ['etc/roots.pem'] }
-    end
-
-    # RPC library for ProtocolBuffers, based on gRPC
-    s.subspec 'ProtoRPC' do |ss|
-      src_dir = "#{objc_dir}/ProtoRPC"
-      ss.source_files = "#{src_dir}/*.{h,m}"
-      ss.header_mappings_dir = "#{objc_dir}"
-
-      ss.dependency 'gRPC/GRPCClient'
-      ss.dependency 'gRPC/RxLibrary'
-      ss.dependency 'Protobuf', '~> 3.0.0-alpha-4'
-    end
-  end
diff --git a/templates/package.json.template b/templates/package.json.template
index 9d19ca062934f07f4866ce06bcc51b7b19b8a41b..f68f64d04751fd00e59d5ee389afc596ff96bfa0 100644
--- a/templates/package.json.template
+++ b/templates/package.json.template
@@ -61,7 +61,6 @@
     "files": [
       "LICENSE",
       "src/node/README.md",
-      "src/node/health_check",
       "src/proto",
       "etc",
       "src/node/index.js",
diff --git a/templates/src/node/health_check/package.json.template b/templates/src/node/health_check/package.json.template
new file mode 100644
index 0000000000000000000000000000000000000000..1248ced1e16da04b2be1bca228c03cde5c4199a7
--- /dev/null
+++ b/templates/src/node/health_check/package.json.template
@@ -0,0 +1,31 @@
+%YAML 1.2
+--- |
+  {
+    "name": "grpc-health-check",
+    "version": "${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/test/cpp/interop/metrics_client.cc b/test/cpp/interop/metrics_client.cc
index 7a0cb994df50e9b9c17c68a1f12947c754b5dde8..179de30805c89f4dbddeb5ead6de97764a908dc1 100644
--- a/test/cpp/interop/metrics_client.cc
+++ b/test/cpp/interop/metrics_client.cc
@@ -56,6 +56,9 @@ using grpc::testing::GaugeResponse;
 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 @@ bool PrintMetrics(std::unique_ptr<MetricsService::Stub> stub, bool total_only,
   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 @@ bool PrintMetrics(std::unique_ptr<MetricsService::Stub> stub, bool total_only,
 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/run_tests/performance/run_worker_python.sh b/tools/run_tests/performance/run_worker_python.sh
index 3b8ba6f4e4a320bd5265e57a14eae001846101e9..06cf172d6fece222ea07299f32d5a11d52c927f1 100755
--- a/tools/run_tests/performance/run_worker_python.sh
+++ b/tools/run_tests/performance/run_worker_python.sh
@@ -32,4 +32,4 @@ set -ex
 
 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 2d5130e1e8682f1fa084cf5a1918ffbbfd97681e..4dfd01fc6636cd57e87b33f309c7607c04fbe322 100644
--- a/tools/run_tests/performance/scenario_config.py
+++ b/tools/run_tests/performance/scenario_config.py
@@ -387,45 +387,44 @@ class PythonLanguage:
     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/run_tests.py b/tools/run_tests/run_tests.py
index 3fa09b7cfb8fb7b1ddddd3b9974d73e28d38858c..e3c5a7942d30c9fca34ecad900a24ff2900e6c44 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -633,10 +633,13 @@ class ObjCLanguage(object):
     _check_compiler(self.args.compiler, ['default'])
 
   def test_specs(self):
-    return [self.config.job_spec(['src/objective-c/tests/run_tests.sh'], None,
-                                  environ=_FORCE_ENVIRON_FOR_WRAPPERS),
+    return [self.config.job_spec(['src/objective-c/tests/run_tests.sh'],
+                                 timeout_seconds=None,
+                                 shortname='objc-tests',
+                                 environ=_FORCE_ENVIRON_FOR_WRAPPERS),
             self.config.job_spec(['src/objective-c/tests/build_example_test.sh'],
-                                 None, timeout_seconds=15*60,
+                                 timeout_seconds=15*60,
+                                 shortname='objc-examples-build',
                                  environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
 
   def pre_build_steps(self):