Merge pull request #2943 from tbetbetbe/grpc-ruby-add-health-check-service

Add a health checker service implementation.
diff --git a/BUILD b/BUILD
index fc7b4f8..7eb5979 100644
--- a/BUILD
+++ b/BUILD
@@ -650,6 +650,26 @@
 
 
 cc_library(
+  name = "grpc_zookeeper",
+  srcs = [
+    "src/core/client_config/resolvers/zookeeper_resolver.h",
+    "src/core/client_config/resolvers/zookeeper_resolver.c",
+  ],
+  hdrs = [
+    "include/grpc/grpc_zookeeper.h",
+  ],
+  includes = [
+    "include",
+    ".",
+  ],
+  deps = [
+    ":gpr",
+    ":grpc",
+  ],
+)
+
+
+cc_library(
   name = "grpc++",
   srcs = [
     "src/cpp/client/secure_credentials.h",
diff --git a/Makefile b/Makefile
index 38d6726..d254fd6 100644
--- a/Makefile
+++ b/Makefile
@@ -411,6 +411,7 @@
 PROTOC_CHECK_VERSION_CMD = protoc --version | grep -q libprotoc.3
 DTRACE_CHECK_CMD = which dtrace > /dev/null
 SYSTEMTAP_HEADERS_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/systemtap.c $(LDFLAGS)
+ZOOKEEPER_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/zookeeper.c $(LDFLAGS) -lzookeeper_mt
 
 ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_PERFTOOLS ?= $(shell $(PERFTOOLS_CHECK_CMD) 2> /dev/null && echo true || echo false)
@@ -478,6 +479,8 @@
 CACHE_MK += HAS_SYSTEMTAP = true,
 endif
 
+HAS_ZOOKEEPER = $(shell $(ZOOKEEPER_CHECK_CMD) 2> /dev/null && echo true || echo false)
+
 # Note that for testing purposes, one can do:
 #   make HAS_EMBEDDED_OPENSSL_ALPN=false
 # to emulate the fact we do not have OpenSSL in the third_party folder.
@@ -596,6 +599,14 @@
 PC_LIB = -lgrpc
 GRPC_UNSECURE_PC_FILE := $(PC_TEMPLATE)
 
+# gprc_zookeeper .pc file
+PC_NAME = gRPC zookeeper
+PC_DESCRIPTION = gRPC's zookeeper plugin
+PC_CFLAGS =
+PC_REQUIRES_PRIVATE =
+PC_LIBS_PRIVATE = -lzookeeper_mt
+GRPC_ZOOKEEPER_PC_FILE := $(PC_TEMPLATE)
+
 PROTOBUF_PKG_CONFIG = false
 
 PC_REQUIRES_GRPCXX =
@@ -881,6 +892,7 @@
 sync_streaming_ping_pong_test: $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test
 sync_unary_ping_pong_test: $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test
 thread_stress_test: $(BINDIR)/$(CONFIG)/thread_stress_test
+zookeeper_test: $(BINDIR)/$(CONFIG)/zookeeper_test
 chttp2_fake_security_bad_hostname_test: $(BINDIR)/$(CONFIG)/chttp2_fake_security_bad_hostname_test
 chttp2_fake_security_cancel_after_accept_test: $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_test
 chttp2_fake_security_cancel_after_accept_and_writes_closed_test: $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_and_writes_closed_test
@@ -1601,6 +1613,7 @@
 	$(PERFTOOLS_CHECK_CMD) || true
 	$(PROTOBUF_CHECK_CMD) || true
 	$(PROTOC_CHECK_VERSION_CMD) || true
+	$(ZOOKEEPER_CHECK_CMD) || true
 
 $(LIBDIR)/$(CONFIG)/zlib/libz.a:
 	$(E) "[MAKE]    Building zlib"
@@ -1659,17 +1672,29 @@
 
 static: static_c static_cxx
 
-static_c: pc_c pc_c_unsecure cache.mk  $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a
+static_c: pc_c pc_c_unsecure cache.mk pc_gpr pc_c_zookeeper $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a static_zookeeper_libs
+
 
 static_cxx: pc_cxx pc_cxx_unsecure pc_gpr cache.mk  $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a
 
 shared: shared_c shared_cxx
 
-shared_c: pc_c pc_c_unsecure pc_gpr  cache.mk $(LIBDIR)/$(CONFIG)/libgpr.$(SHARED_EXT) $(LIBDIR)/$(CONFIG)/libgrpc.$(SHARED_EXT) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.$(SHARED_EXT)
+shared_c: pc_c pc_c_unsecure pc_gpr cache.mk pc_c_zookeeper $(LIBDIR)/$(CONFIG)/libgpr.$(SHARED_EXT) $(LIBDIR)/$(CONFIG)/libgrpc.$(SHARED_EXT) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.$(SHARED_EXT) shared_zookeeper_libs
 
 shared_cxx: pc_cxx pc_cxx_unsecure cache.mk $(LIBDIR)/$(CONFIG)/libgrpc++.$(SHARED_EXT) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.$(SHARED_EXT)
 
 shared_csharp: shared_c  $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.$(SHARED_EXT)
+ifeq ($(HAS_ZOOKEEPER),true)
+static_zookeeper_libs: $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a
+shared_zookeeper_libs: $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.$(SHARED_EXT)
+else
+
+static_zookeeper_libs:
+
+shared_zookeeper_libs:
+
+endif
+
 grpc_csharp_ext: shared_csharp
 
 plugins: $(PROTOC_PLUGINS)
@@ -1683,21 +1708,41 @@
 
 pc_c_unsecure: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_unsecure.pc
 
+ifeq ($(HAS_ZOOKEEPER),true)
+pc_c_zookeeper: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_zookeeper.pc
+else
+pc_c_zookeeper:
+endif
+
 pc_cxx: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++.pc
 
 pc_cxx_unsecure: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++_unsecure.pc
 
 privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a
 
-buildtests: buildtests_c buildtests_cxx
+ifeq ($(HAS_ZOOKEEPER),true)
+privatelibs_zookeeper: 
+else
+privatelibs_zookeeper:
+endif
+
+
+buildtests: buildtests_c buildtests_cxx buildtests_zookeeper
 
 buildtests_c: privatelibs_c $(BINDIR)/$(CONFIG)/alarm_heap_test $(BINDIR)/$(CONFIG)/alarm_list_test $(BINDIR)/$(CONFIG)/alarm_test $(BINDIR)/$(CONFIG)/alpn_test $(BINDIR)/$(CONFIG)/bin_encoder_test $(BINDIR)/$(CONFIG)/chttp2_status_conversion_test $(BINDIR)/$(CONFIG)/chttp2_stream_encoder_test $(BINDIR)/$(CONFIG)/chttp2_stream_map_test $(BINDIR)/$(CONFIG)/dualstack_socket_test $(BINDIR)/$(CONFIG)/fd_conservation_posix_test $(BINDIR)/$(CONFIG)/fd_posix_test $(BINDIR)/$(CONFIG)/fling_client $(BINDIR)/$(CONFIG)/fling_server $(BINDIR)/$(CONFIG)/fling_stream_test $(BINDIR)/$(CONFIG)/fling_test $(BINDIR)/$(CONFIG)/gpr_cmdline_test $(BINDIR)/$(CONFIG)/gpr_env_test $(BINDIR)/$(CONFIG)/gpr_file_test $(BINDIR)/$(CONFIG)/gpr_histogram_test $(BINDIR)/$(CONFIG)/gpr_host_port_test $(BINDIR)/$(CONFIG)/gpr_log_test $(BINDIR)/$(CONFIG)/gpr_slice_buffer_test $(BINDIR)/$(CONFIG)/gpr_slice_test $(BINDIR)/$(CONFIG)/gpr_stack_lockfree_test $(BINDIR)/$(CONFIG)/gpr_string_test $(BINDIR)/$(CONFIG)/gpr_sync_test $(BINDIR)/$(CONFIG)/gpr_thd_test $(BINDIR)/$(CONFIG)/gpr_time_test $(BINDIR)/$(CONFIG)/gpr_tls_test $(BINDIR)/$(CONFIG)/gpr_useful_test $(BINDIR)/$(CONFIG)/grpc_auth_context_test $(BINDIR)/$(CONFIG)/grpc_base64_test $(BINDIR)/$(CONFIG)/grpc_byte_buffer_reader_test $(BINDIR)/$(CONFIG)/grpc_channel_stack_test $(BINDIR)/$(CONFIG)/grpc_completion_queue_test $(BINDIR)/$(CONFIG)/grpc_credentials_test $(BINDIR)/$(CONFIG)/grpc_json_token_test $(BINDIR)/$(CONFIG)/grpc_jwt_verifier_test $(BINDIR)/$(CONFIG)/grpc_security_connector_test $(BINDIR)/$(CONFIG)/grpc_stream_op_test $(BINDIR)/$(CONFIG)/hpack_parser_test $(BINDIR)/$(CONFIG)/hpack_table_test $(BINDIR)/$(CONFIG)/httpcli_format_request_test $(BINDIR)/$(CONFIG)/httpcli_parser_test $(BINDIR)/$(CONFIG)/httpcli_test $(BINDIR)/$(CONFIG)/json_rewrite $(BINDIR)/$(CONFIG)/json_rewrite_test $(BINDIR)/$(CONFIG)/json_test $(BINDIR)/$(CONFIG)/lame_client_test $(BINDIR)/$(CONFIG)/message_compress_test $(BINDIR)/$(CONFIG)/multi_init_test $(BINDIR)/$(CONFIG)/multiple_server_queues_test $(BINDIR)/$(CONFIG)/murmur_hash_test $(BINDIR)/$(CONFIG)/no_server_test $(BINDIR)/$(CONFIG)/resolve_address_test $(BINDIR)/$(CONFIG)/secure_endpoint_test $(BINDIR)/$(CONFIG)/sockaddr_utils_test $(BINDIR)/$(CONFIG)/tcp_client_posix_test $(BINDIR)/$(CONFIG)/tcp_posix_test $(BINDIR)/$(CONFIG)/tcp_server_posix_test $(BINDIR)/$(CONFIG)/time_averaged_stats_test $(BINDIR)/$(CONFIG)/timeout_encoding_test $(BINDIR)/$(CONFIG)/timers_test $(BINDIR)/$(CONFIG)/transport_metadata_test $(BINDIR)/$(CONFIG)/transport_security_test $(BINDIR)/$(CONFIG)/udp_server_test $(BINDIR)/$(CONFIG)/uri_parser_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_channel_connectivity_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_default_host_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_channel_connectivity_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_default_host_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_channel_connectivity_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_default_host_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_channel_connectivity_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_channel_connectivity_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_with_poll_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_channel_connectivity_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_default_host_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_invoke_large_request_test 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$(BINDIR)/$(CONFIG)/chttp2_fullstack_with_proxy_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_proxy_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_compressed_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_compressed_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_compressed_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/connection_prefix_bad_client_test $(BINDIR)/$(CONFIG)/initial_settings_frame_bad_client_test
 
-buildtests_cxx: privatelibs_cxx $(BINDIR)/$(CONFIG)/async_end2end_test $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test $(BINDIR)/$(CONFIG)/auth_property_iterator_test $(BINDIR)/$(CONFIG)/channel_arguments_test $(BINDIR)/$(CONFIG)/cli_call_test $(BINDIR)/$(CONFIG)/client_crash_test $(BINDIR)/$(CONFIG)/client_crash_test_server $(BINDIR)/$(CONFIG)/credentials_test $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test $(BINDIR)/$(CONFIG)/cxx_slice_test $(BINDIR)/$(CONFIG)/cxx_time_test $(BINDIR)/$(CONFIG)/dynamic_thread_pool_test $(BINDIR)/$(CONFIG)/end2end_test $(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test $(BINDIR)/$(CONFIG)/generic_end2end_test $(BINDIR)/$(CONFIG)/grpc_cli $(BINDIR)/$(CONFIG)/interop_client $(BINDIR)/$(CONFIG)/interop_server $(BINDIR)/$(CONFIG)/interop_test $(BINDIR)/$(CONFIG)/mock_test $(BINDIR)/$(CONFIG)/qps_interarrival_test $(BINDIR)/$(CONFIG)/qps_openloop_test $(BINDIR)/$(CONFIG)/qps_test $(BINDIR)/$(CONFIG)/reconnect_interop_client $(BINDIR)/$(CONFIG)/reconnect_interop_server $(BINDIR)/$(CONFIG)/secure_auth_context_test $(BINDIR)/$(CONFIG)/server_crash_test $(BINDIR)/$(CONFIG)/server_crash_test_client $(BINDIR)/$(CONFIG)/status_test $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/thread_stress_test
+buildtests_cxx: buildtests_zookeeper privatelibs_cxx $(BINDIR)/$(CONFIG)/async_end2end_test $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test $(BINDIR)/$(CONFIG)/auth_property_iterator_test $(BINDIR)/$(CONFIG)/channel_arguments_test $(BINDIR)/$(CONFIG)/cli_call_test $(BINDIR)/$(CONFIG)/client_crash_test $(BINDIR)/$(CONFIG)/client_crash_test_server $(BINDIR)/$(CONFIG)/credentials_test $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test $(BINDIR)/$(CONFIG)/cxx_slice_test $(BINDIR)/$(CONFIG)/cxx_time_test $(BINDIR)/$(CONFIG)/dynamic_thread_pool_test $(BINDIR)/$(CONFIG)/end2end_test $(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test $(BINDIR)/$(CONFIG)/generic_end2end_test $(BINDIR)/$(CONFIG)/grpc_cli $(BINDIR)/$(CONFIG)/interop_client $(BINDIR)/$(CONFIG)/interop_server $(BINDIR)/$(CONFIG)/interop_test $(BINDIR)/$(CONFIG)/mock_test $(BINDIR)/$(CONFIG)/qps_interarrival_test $(BINDIR)/$(CONFIG)/qps_openloop_test $(BINDIR)/$(CONFIG)/qps_test $(BINDIR)/$(CONFIG)/reconnect_interop_client $(BINDIR)/$(CONFIG)/reconnect_interop_server $(BINDIR)/$(CONFIG)/secure_auth_context_test $(BINDIR)/$(CONFIG)/server_crash_test $(BINDIR)/$(CONFIG)/server_crash_test_client $(BINDIR)/$(CONFIG)/status_test $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/thread_stress_test
 
-test: test_c test_cxx
+ifeq ($(HAS_ZOOKEEPER),true)
+buildtests_zookeeper: privatelibs_zookeeper $(BINDIR)/$(CONFIG)/zookeeper_test
+else
+buildtests_zookeeper:
+endif
 
-flaky_test: flaky_test_c flaky_test_cxx
+
+test: test_c test_cxx test_zookeeper
+
+flaky_test: flaky_test_c flaky_test_cxx flaky_test_zookeeper
 
 test_c: buildtests_c
 	$(E) "[RUN]     Testing alarm_heap_test"
@@ -3257,7 +3302,7 @@
 flaky_test_c: buildtests_c
 
 
-test_cxx: buildtests_cxx
+test_cxx: test_zookeeper buildtests_cxx
 	$(E) "[RUN]     Testing async_end2end_test"
 	$(Q) $(BINDIR)/$(CONFIG)/async_end2end_test || ( echo test async_end2end_test failed ; exit 1 )
 	$(E) "[RUN]     Testing async_streaming_ping_pong_test"
@@ -3313,6 +3358,20 @@
 flaky_test_cxx: buildtests_cxx
 
 
+ifeq ($(HAS_ZOOKEEPER),true)
+test_zookeeper: buildtests_zookeeper
+	$(E) "[RUN]     Testing zookeeper_test"
+	$(Q) $(BINDIR)/$(CONFIG)/zookeeper_test || ( echo test zookeeper_test failed ; exit 1 )
+
+
+flaky_test_zookeeper: buildtests_zookeeper
+
+else
+test_zookeeper:
+flaky_test_zookeeper:
+endif
+
+
 test_python: static_c
 	$(E) "[RUN]     Testing python code"
 	$(Q) tools/run_tests/run_tests.py -lpython -c$(CONFIG)
@@ -3348,6 +3407,10 @@
 	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/libgrpc.a
 	$(E) "[STRIP]   Stripping libgrpc_unsecure.a"
 	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a
+ifeq ($(HAS_ZOOKEEPER),true)
+	$(E) "[STRIP]   Stripping libgrpc_zookeeper.a"
+	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a
+endif
 endif
 
 strip-static_cxx: static_cxx
@@ -3366,6 +3429,10 @@
 	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/libgrpc.$(SHARED_EXT)
 	$(E) "[STRIP]   Stripping libgrpc_unsecure.so"
 	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.$(SHARED_EXT)
+ifeq ($(HAS_ZOOKEEPER),true)
+	$(E) "[STRIP]   Stripping libgrpc_zookeeper.so"
+	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.$(SHARED_EXT)
+endif
 endif
 
 strip-shared_cxx: shared_cxx
@@ -3401,6 +3468,11 @@
 	$(Q) mkdir -p $(@D)
 	$(Q) echo "$(GRPC_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
+$(LIBDIR)/$(CONFIG)/pkgconfig/grpc_zookeeper.pc:
+	$(E) "[MAKE]    Generating $@"
+	$(Q) mkdir -p $(@D)
+	$(Q) echo -e "$(GRPC_ZOOKEEPER_PC_FILE)" >$@
+
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
@@ -3643,6 +3715,11 @@
 	$(E) "[INSTALL] Installing libgrpc_unsecure.a"
 	$(Q) $(INSTALL) -d $(prefix)/lib
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(prefix)/lib/libgrpc_unsecure.a
+ifeq ($(HAS_ZOOKEEPER),true)
+	$(E) "[INSTALL] Installing libgrpc_zookeeper.a"
+	$(Q) $(INSTALL) -d $(prefix)/lib
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a $(prefix)/lib/libgrpc_zookeeper.a
+endif
 
 install-static_cxx: static_cxx strip-static_cxx install-pkg-config_cxx
 	$(E) "[INSTALL] Installing libgrpc++.a"
@@ -3697,6 +3774,22 @@
 	$(Q) ln -sf libgrpc_unsecure.$(SHARED_EXT) $(prefix)/lib/libgrpc_unsecure.so
 endif
 endif
+ifeq ($(HAS_ZOOKEEPER),true)
+ifeq ($(SYSTEM),MINGW32)
+	$(E) "[INSTALL] Installing grpc_zookeeper.$(SHARED_EXT)"
+	$(Q) $(INSTALL) -d $(prefix)/lib
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/grpc_zookeeper.$(SHARED_EXT) $(prefix)/lib/grpc_zookeeper.$(SHARED_EXT)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper-imp.a $(prefix)/lib/libgrpc_zookeeper-imp.a
+else
+	$(E) "[INSTALL] Installing libgrpc_zookeeper.$(SHARED_EXT)"
+	$(Q) $(INSTALL) -d $(prefix)/lib
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.$(SHARED_EXT) $(prefix)/lib/libgrpc_zookeeper.$(SHARED_EXT)
+ifneq ($(SYSTEM),Darwin)
+	$(Q) ln -sf libgrpc_zookeeper.$(SHARED_EXT) $(prefix)/lib/libgrpc_zookeeper.so.0
+	$(Q) ln -sf libgrpc_zookeeper.$(SHARED_EXT) $(prefix)/lib/libgrpc_zookeeper.so
+endif
+endif
+endif
 ifneq ($(SYSTEM),MINGW32)
 ifneq ($(SYSTEM),Darwin)
 	$(Q) ldconfig || true
@@ -3733,6 +3826,8 @@
 	$(Q) ln -sf libgrpc++_unsecure.$(SHARED_EXT) $(prefix)/lib/libgrpc++_unsecure.so
 endif
 endif
+ifeq ($(HAS_ZOOKEEPER),true)
+endif
 ifneq ($(SYSTEM),MINGW32)
 ifneq ($(SYSTEM),Darwin)
 	$(Q) ldconfig || true
@@ -3755,6 +3850,8 @@
 	$(Q) ln -sf libgrpc_csharp_ext.$(SHARED_EXT) $(prefix)/lib/libgrpc_csharp_ext.so
 endif
 endif
+ifeq ($(HAS_ZOOKEEPER),true)
+endif
 ifneq ($(SYSTEM),MINGW32)
 ifneq ($(SYSTEM),Darwin)
 	$(Q) ldconfig || true
@@ -3779,12 +3876,15 @@
 	$(Q) $(INSTALL) $(BINDIR)/$(CONFIG)/grpc_ruby_plugin $(prefix)/bin/grpc_ruby_plugin
 endif
 
-install-pkg-config_c: pc_gpr pc_c pc_c_unsecure
+install-pkg-config_c: pc_gpr pc_c pc_c_unsecure pc_c_zookeeper
 	$(E) "[INSTALL] Installing C pkg-config files"
 	$(Q) $(INSTALL) -d $(prefix)/lib/pkgconfig
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/pkgconfig/gpr.pc $(prefix)/lib/pkgconfig/gpr.pc
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/pkgconfig/grpc.pc $(prefix)/lib/pkgconfig/grpc.pc
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_unsecure.pc $(prefix)/lib/pkgconfig/grpc_unsecure.pc
+ifeq ($(HAS_ZOOKEEPER),true)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_zookeeper.pc $(prefix)/lib/pkgconfig/grpc_zookeeper.pc
+endif
 
 install-pkg-config_cxx: pc_cxx pc_cxx_unsecure
 	$(E) "[INSTALL] Installing C++ pkg-config files"
@@ -4410,6 +4510,48 @@
 endif
 
 
+LIBGRPC_ZOOKEEPER_SRC = \
+    src/core/client_config/resolvers/zookeeper_resolver.c \
+
+PUBLIC_HEADERS_C += \
+    include/grpc/grpc_zookeeper.h \
+
+LIBGRPC_ZOOKEEPER_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGRPC_ZOOKEEPER_SRC))))
+
+$(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a: $(ZLIB_DEP) $(LIBGRPC_ZOOKEEPER_OBJS)
+	$(E) "[AR]      Creating $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a
+	$(Q) $(AR) rcs $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a $(LIBGRPC_ZOOKEEPER_OBJS)
+ifeq ($(SYSTEM),Darwin)
+	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a
+endif
+
+
+
+ifeq ($(SYSTEM),MINGW32)
+$(LIBDIR)/$(CONFIG)/grpc_zookeeper.$(SHARED_EXT): $(LIBGRPC_ZOOKEEPER_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/gpr.$(SHARED_EXT) $(LIBDIR)/$(CONFIG)/grpc.$(SHARED_EXT)
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_zookeeper.def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_zookeeper-imp.a -o $(LIBDIR)/$(CONFIG)/grpc_zookeeper.$(SHARED_EXT) $(LIBGRPC_ZOOKEEPER_OBJS) $(LDLIBS) -lgpr-imp -lgrpc-imp
+else
+$(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.$(SHARED_EXT): $(LIBGRPC_ZOOKEEPER_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.$(SHARED_EXT) $(LIBDIR)/$(CONFIG)/libgrpc.$(SHARED_EXT)
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+ifeq ($(SYSTEM),Darwin)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name libgrpc_zookeeper.$(SHARED_EXT) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.$(SHARED_EXT) $(LIBGRPC_ZOOKEEPER_OBJS) $(LDLIBS) -lgpr -lgrpc -lzookeeper_mt
+else
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_zookeeper.so.0 -o $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.$(SHARED_EXT) $(LIBGRPC_ZOOKEEPER_OBJS) $(LDLIBS) -lgpr -lgrpc -lzookeeper_mt
+	$(Q) ln -sf libgrpc_zookeeper.$(SHARED_EXT) $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.so.0
+	$(Q) ln -sf libgrpc_zookeeper.$(SHARED_EXT) $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.so
+endif
+endif
+
+ifneq ($(NO_DEPS),true)
+-include $(LIBGRPC_ZOOKEEPER_OBJS:.o=.dep)
+endif
+
+
 LIBRECONNECT_SERVER_SRC = \
     test/core/util/reconnect_server.c \
 
@@ -10246,6 +10388,46 @@
 endif
 
 
+ZOOKEEPER_TEST_SRC = \
+    test/cpp/end2end/zookeeper_test.cc \
+
+ZOOKEEPER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ZOOKEEPER_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/zookeeper_test: openssl_dep_error
+
+else
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/zookeeper_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/zookeeper_test: $(PROTOBUF_DEP) $(ZOOKEEPER_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(ZOOKEEPER_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a -lzookeeper_mt $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/zookeeper_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/end2end/zookeeper_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+deps_zookeeper_test: $(ZOOKEEPER_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(ZOOKEEPER_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 ifeq ($(NO_SECURE),true)
 
 # You can't build secure targets if you don't have OpenSSL.
diff --git a/build.json b/build.json
index 9a92439..f7be17e 100644
--- a/build.json
+++ b/build.json
@@ -573,6 +573,29 @@
       "vs_project_guid": "{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}"
     },
     {
+      "name": "grpc_zookeeper",
+      "build": "all",
+      "language": "c",
+      "public_headers": [
+        "include/grpc/grpc_zookeeper.h"
+      ],
+      "headers": [
+        "src/core/client_config/resolvers/zookeeper_resolver.h"
+      ],
+      "src": [
+        "src/core/client_config/resolvers/zookeeper_resolver.c"
+      ],
+      "deps": [
+        "gpr",
+        "grpc"
+      ],
+      "external_deps": [
+        "zookeeper"
+      ],
+      "secure": "no",
+      "vs_project_guid": "{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}"
+    },
+    {
       "name": "reconnect_server",
       "build": "private",
       "language": "c",
@@ -2647,6 +2670,26 @@
         "gpr_test_util",
         "gpr"
       ]
+    },
+    {
+      "name": "zookeeper_test",
+      "build": "test",
+      "language": "c++",
+      "src": [
+        "test/cpp/end2end/zookeeper_test.cc"
+      ],
+      "deps": [
+        "grpc++_test_util",
+        "grpc_test_util",
+        "grpc++",
+        "grpc_zookeeper",
+        "grpc",
+        "gpr_test_util",
+        "gpr"
+      ],
+      "external_deps": [
+        "zookeeper"
+      ]
     }
   ]
 }
diff --git a/include/grpc/grpc.h b/include/grpc/grpc.h
index f104648..2d53325 100644
--- a/include/grpc/grpc.h
+++ b/include/grpc/grpc.h
@@ -376,6 +376,23 @@
   } data;
 } grpc_op;
 
+/** Registers a plugin to be initialized and destroyed with the library.
+
+    The \a init and \a destroy functions will be invoked as part of 
+    \a grpc_init() and \a grpc_shutdown(), respectively. 
+    Note that these functions can be invoked an arbitrary number of times
+    (and hence so will \a init and \a destroy).
+    It is safe to pass NULL to either argument. Plugins are destroyed in 
+    the reverse order they were initialized. */
+void grpc_register_plugin(void (*init)(void), void (*destroy)(void));
+
+/** Frees the memory used by all the plugin information.
+
+    While grpc_init and grpc_shutdown can be called multiple times, the plugins
+    won't be unregistered and their memory cleaned up unless you call that
+    function. Using atexit(grpc_unregister_all_plugins) is a valid method. */
+void grpc_unregister_all_plugins();
+
 /* Propagation bits: this can be bitwise or-ed to form propagation_mask for
  * grpc_call */
 /** Propagate deadline */
@@ -388,8 +405,8 @@
 
 /* Default propagation mask: clients of the core API are encouraged to encode
    deltas from this in their implementations... ie write:
-   GRPC_PROPAGATE_DEFAULTS & ~GRPC_PROPAGATE_DEADLINE to disable deadline 
-   propagation. Doing so gives flexibility in the future to define new 
+   GRPC_PROPAGATE_DEFAULTS & ~GRPC_PROPAGATE_DEADLINE to disable deadline
+   propagation. Doing so gives flexibility in the future to define new
    propagation types that are default inherited or not. */
 #define GRPC_PROPAGATE_DEFAULTS                                                \
   ((gpr_uint32)((                                                              \
@@ -436,8 +453,8 @@
     otherwise a grpc_event describing the event that occurred.
 
     Callers must not call grpc_completion_queue_next and
-    grpc_completion_queue_pluck simultaneously on the same completion queue. 
-    
+    grpc_completion_queue_pluck simultaneously on the same completion queue.
+
     Completion queues support a maximum of GRPC_MAX_COMPLETION_QUEUE_PLUCKERS
     concurrently executing plucks at any time. */
 grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cq, void *tag,
@@ -477,7 +494,7 @@
     completions are sent to 'completion_queue'. 'method' and 'host' need only
     live through the invocation of this function.
     If parent_call is non-NULL, it must be a server-side call. It will be used
-    to propagate properties from the server call to this new client call. 
+    to propagate properties from the server call to this new client call.
     */
 grpc_call *grpc_channel_create_call(grpc_channel *channel,
                                     grpc_call *parent_call,
diff --git a/include/grpc/grpc_zookeeper.h b/include/grpc/grpc_zookeeper.h
new file mode 100644
index 0000000..2b195c1
--- /dev/null
+++ b/include/grpc/grpc_zookeeper.h
@@ -0,0 +1,59 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+/** Support zookeeper as alternative name system in addition to DNS
+ *  Zookeeper name in gRPC is represented as a URI:
+ *  zookeeper://host:port/path/service/instance
+ *
+ *  Where zookeeper is the name system scheme
+ *  host:port is the address of a zookeeper server
+ *  /path/service/instance is the zookeeper name to be resolved
+ *
+ *  Refer doc/naming.md for more details
+ */
+
+#ifndef GRPC_GRPC_ZOOKEEPER_H
+#define GRPC_GRPC_ZOOKEEPER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Register zookeeper name resolver in grpc */
+void grpc_zookeeper_register();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_GRPC_ZOOKEEPER_H */
diff --git a/src/compiler/csharp_generator_helpers.h b/src/compiler/csharp_generator_helpers.h
index 1370627..5639ea0 100644
--- a/src/compiler/csharp_generator_helpers.h
+++ b/src/compiler/csharp_generator_helpers.h
@@ -41,7 +41,7 @@
 
 inline bool ServicesFilename(const grpc::protobuf::FileDescriptor *file,
                              grpc::string *file_name_or_error) {
-  *file_name_or_error = grpc_generator::FileNameInUpperCamel(file) + "Grpc.cs";
+  *file_name_or_error = grpc_generator::FileNameInUpperCamel(file, false) + "Grpc.cs";
   return true;
 }
 
diff --git a/src/compiler/generator_helpers.h b/src/compiler/generator_helpers.h
index 68b807b..e1bb66a 100644
--- a/src/compiler/generator_helpers.h
+++ b/src/compiler/generator_helpers.h
@@ -125,16 +125,23 @@
   return result;
 }
 
-inline grpc::string FileNameInUpperCamel(const grpc::protobuf::FileDescriptor *file) {
+inline grpc::string FileNameInUpperCamel(const grpc::protobuf::FileDescriptor *file,
+                                         bool include_package_path) {
   std::vector<grpc::string> tokens = tokenize(StripProto(file->name()), "/");
   grpc::string result = "";
-  for (unsigned int i = 0; i < tokens.size() - 1; i++) {
-    result += tokens[i] + "/";
+  if (include_package_path) {
+    for (unsigned int i = 0; i < tokens.size() - 1; i++) {
+      result += tokens[i] + "/";
+    }
   }
   result += LowerUnderscoreToUpperCamel(tokens.back());
   return result;
 }
 
+inline grpc::string FileNameInUpperCamel(const grpc::protobuf::FileDescriptor *file) {
+  return FileNameInUpperCamel(file, true);
+}
+
 enum MethodType {
   METHODTYPE_NO_STREAMING,
   METHODTYPE_CLIENT_STREAMING,
diff --git a/src/compiler/objective_c_generator.cc b/src/compiler/objective_c_generator.cc
index 483c657..a3157db 100644
--- a/src/compiler/objective_c_generator.cc
+++ b/src/compiler/objective_c_generator.cc
@@ -44,7 +44,6 @@
 using ::grpc::protobuf::io::Printer;
 using ::grpc::protobuf::MethodDescriptor;
 using ::grpc::protobuf::ServiceDescriptor;
-using ::grpc::string;
 using ::std::map;
 
 namespace grpc_objective_c_generator {
@@ -52,7 +51,7 @@
 
 void PrintProtoRpcDeclarationAsPragma(Printer *printer,
                                       const MethodDescriptor *method,
-                                      map<string, string> vars) {
+                                      map< ::grpc::string, ::grpc::string> vars) {
   vars["client_stream"] = method->client_streaming() ? "stream " : "";
   vars["server_stream"] = method->server_streaming() ? "stream " : "";
 
@@ -62,7 +61,7 @@
 }
 
 void PrintMethodSignature(Printer *printer, const MethodDescriptor *method,
-                          const map<string, string> &vars) {
+                          const map< ::grpc::string, ::grpc::string> &vars) {
   // TODO(jcanizales): Print method comments.
 
   printer->Print(vars, "- ($return_type$)$method_name$With");
@@ -85,7 +84,7 @@
 }
 
 void PrintSimpleSignature(Printer *printer, const MethodDescriptor *method,
-                          map<string, string> vars) {
+                          map< ::grpc::string, ::grpc::string> vars) {
   vars["method_name"] =
       grpc_generator::LowercaseFirstLetter(vars["method_name"]);
   vars["return_type"] = "void";
@@ -93,14 +92,14 @@
 }
 
 void PrintAdvancedSignature(Printer *printer, const MethodDescriptor *method,
-                            map<string, string> vars) {
+                            map< ::grpc::string, ::grpc::string> vars) {
   vars["method_name"] = "RPCTo" + vars["method_name"];
   vars["return_type"] = "ProtoRPC *";
   PrintMethodSignature(printer, method, vars);
 }
 
-inline map<string, string> GetMethodVars(const MethodDescriptor *method) {
-  map<string, string> res;
+inline map< ::grpc::string, ::grpc::string> GetMethodVars(const MethodDescriptor *method) {
+  map< ::grpc::string, ::grpc::string> res;
   res["method_name"] = method->name();
   res["request_type"] = method->input_type()->name();
   res["response_type"] = method->output_type()->name();
@@ -110,7 +109,7 @@
 }
 
 void PrintMethodDeclarations(Printer *printer, const MethodDescriptor *method) {
-  map<string, string> vars = GetMethodVars(method);
+  map< ::grpc::string, ::grpc::string> vars = GetMethodVars(method);
 
   PrintProtoRpcDeclarationAsPragma(printer, method, vars);
 
@@ -121,7 +120,7 @@
 }
 
 void PrintSimpleImplementation(Printer *printer, const MethodDescriptor *method,
-                               map<string, string> vars) {
+                               map< ::grpc::string, ::grpc::string> vars) {
   printer->Print("{\n");
   printer->Print(vars, "  [[self RPCTo$method_name$With");
   if (method->client_streaming()) {
@@ -139,7 +138,7 @@
 
 void PrintAdvancedImplementation(Printer *printer,
                                  const MethodDescriptor *method,
-                                 map<string, string> vars) {
+                                 map< ::grpc::string, ::grpc::string> vars) {
   printer->Print("{\n");
   printer->Print(vars, "  return [self RPCToMethod:@\"$method_name$\"\n");
 
@@ -164,7 +163,7 @@
 
 void PrintMethodImplementations(Printer *printer,
                                 const MethodDescriptor *method) {
-  map<string, string> vars = GetMethodVars(method);
+  map< ::grpc::string, ::grpc::string> vars = GetMethodVars(method);
 
   PrintProtoRpcDeclarationAsPragma(printer, method, vars);
 
@@ -179,14 +178,14 @@
 
 }  // namespace
 
-string GetHeader(const ServiceDescriptor *service) {
-  string output;
+::grpc::string GetHeader(const ServiceDescriptor *service) {
+  ::grpc::string output;
   {
     // Scope the output stream so it closes and finalizes output to the string.
     grpc::protobuf::io::StringOutputStream output_stream(&output);
     Printer printer(&output_stream, '$');
 
-    map<string, string> vars = {{"service_class", ServiceClassName(service)}};
+    map< ::grpc::string, ::grpc::string> vars = {{"service_class", ServiceClassName(service)}};
 
     printer.Print(vars, "@protocol $service_class$ <NSObject>\n\n");
 
@@ -209,14 +208,14 @@
   return output;
 }
 
-string GetSource(const ServiceDescriptor *service) {
-  string output;
+::grpc::string GetSource(const ServiceDescriptor *service) {
+ ::grpc::string output;
   {
     // Scope the output stream so it closes and finalizes output to the string.
     grpc::protobuf::io::StringOutputStream output_stream(&output);
     Printer printer(&output_stream, '$');
 
-    map<string, string> vars = {{"service_name", service->name()},
+    map< ::grpc::string,::grpc::string> vars = {{"service_name", service->name()},
                                 {"service_class", ServiceClassName(service)},
                                 {"package", service->file()->package()}};
 
diff --git a/src/compiler/objective_c_plugin.cc b/src/compiler/objective_c_plugin.cc
index 10f06ad..1744035 100644
--- a/src/compiler/objective_c_plugin.cc
+++ b/src/compiler/objective_c_plugin.cc
@@ -39,44 +39,43 @@
 #include "src/compiler/objective_c_generator.h"
 #include "src/compiler/objective_c_generator_helpers.h"
 
-using ::grpc::string;
-
 class ObjectiveCGrpcGenerator : public grpc::protobuf::compiler::CodeGenerator {
  public:
   ObjectiveCGrpcGenerator() {}
   virtual ~ObjectiveCGrpcGenerator() {}
 
   virtual bool Generate(const grpc::protobuf::FileDescriptor *file,
-                        const string &parameter,
+                        const ::grpc::string &parameter,
                         grpc::protobuf::compiler::GeneratorContext *context,
-                        string *error) const {
+                        ::grpc::string *error) const {
 
     if (file->service_count() == 0) {
       // No services.  Do nothing.
       return true;
     }
 
-    string file_name = grpc_generator::FileNameInUpperCamel(file);
-    string prefix = file->options().objc_class_prefix();
+    ::grpc::string file_name = grpc_generator::FileNameInUpperCamel(file);
+    ::grpc::string prefix = file->options().objc_class_prefix();
 
     {
       // Generate .pbrpc.h
 
-      string imports = string("#import \"") + file_name + ".pbobjc.h\"\n\n"
+      ::grpc::string imports = ::grpc::string("#import \"") + file_name +
+        ".pbobjc.h\"\n\n"
         "#import <ProtoRPC/ProtoService.h>\n"
         "#import <RxLibrary/GRXWriteable.h>\n"
         "#import <RxLibrary/GRXWriter.h>\n";
 
       // TODO(jcanizales): Instead forward-declare the input and output types
       // and import the files in the .pbrpc.m
-      string proto_imports;
+      ::grpc::string proto_imports;
       for (int i = 0; i < file->dependency_count(); i++) {
-        string header = grpc_objective_c_generator::MessageHeaderName(
+        ::grpc::string header = grpc_objective_c_generator::MessageHeaderName(
             file->dependency(i));
-        proto_imports += string("#import \"") + header + "\"\n";
+        proto_imports += ::grpc::string("#import \"") + header + "\"\n";
       }
 
-      string declarations;
+      ::grpc::string declarations;
       for (int i = 0; i < file->service_count(); i++) {
         const grpc::protobuf::ServiceDescriptor *service = file->service(i);
         declarations += grpc_objective_c_generator::GetHeader(service);
@@ -89,11 +88,12 @@
     {
       // Generate .pbrpc.m
 
-      string imports = string("#import \"") + file_name + ".pbrpc.h\"\n\n"
+      ::grpc::string imports = ::grpc::string("#import \"") + file_name +
+        ".pbrpc.h\"\n\n"
         "#import <ProtoRPC/ProtoRPC.h>\n"
         "#import <RxLibrary/GRXWriter+Immediate.h>\n";
 
-      string definitions;
+      ::grpc::string definitions;
       for (int i = 0; i < file->service_count(); i++) {
         const grpc::protobuf::ServiceDescriptor *service = file->service(i);
         definitions += grpc_objective_c_generator::GetSource(service);
@@ -108,7 +108,7 @@
  private:
   // Write the given code into the given file.
   void Write(grpc::protobuf::compiler::GeneratorContext *context,
-              const string &filename, const string &code) const {
+              const ::grpc::string &filename, const ::grpc::string &code) const {
     std::unique_ptr<grpc::protobuf::io::ZeroCopyOutputStream> output(
         context->Open(filename));
     grpc::protobuf::io::CodedOutputStream coded_out(output.get());
diff --git a/src/core/client_config/resolvers/zookeeper_resolver.c b/src/core/client_config/resolvers/zookeeper_resolver.c
new file mode 100644
index 0000000..a8397a3
--- /dev/null
+++ b/src/core/client_config/resolvers/zookeeper_resolver.c
@@ -0,0 +1,501 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/client_config/resolvers/zookeeper_resolver.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include <grpc/grpc_zookeeper.h>
+#include <zookeeper/zookeeper.h>
+
+#include "src/core/client_config/lb_policies/pick_first.h"
+#include "src/core/client_config/resolver_registry.h"
+#include "src/core/iomgr/resolve_address.h"
+#include "src/core/support/string.h"
+#include "src/core/json/json.h"
+
+/** Zookeeper session expiration time in milliseconds */
+#define GRPC_ZOOKEEPER_SESSION_TIMEOUT 15000
+
+typedef struct {
+  /** base class: must be first */
+  grpc_resolver base;
+  /** refcount */
+  gpr_refcount refs;
+  /** name to resolve */
+  char *name;
+  /** subchannel factory */
+  grpc_subchannel_factory *subchannel_factory;
+  /** load balancing policy factory */
+  grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels,
+                                       size_t num_subchannels);
+
+  /** mutex guarding the rest of the state */
+  gpr_mu mu;
+  /** are we currently resolving? */
+  int resolving;
+  /** which version of resolved_config have we published? */
+  int published_version;
+  /** which version of resolved_config is current? */
+  int resolved_version;
+  /** pending next completion, or NULL */
+  grpc_iomgr_closure *next_completion;
+  /** target config address for next completion */
+  grpc_client_config **target_config;
+  /** current (fully resolved) config */
+  grpc_client_config *resolved_config;
+
+  /** zookeeper handle */
+  zhandle_t *zookeeper_handle;
+  /** zookeeper resolved addresses */
+  grpc_resolved_addresses *resolved_addrs;
+  /** total number of addresses to be resolved */
+  int resolved_total;
+  /** number of addresses resolved */
+  int resolved_num;
+} zookeeper_resolver;
+
+static void zookeeper_destroy(grpc_resolver *r);
+
+static void zookeeper_start_resolving_locked(zookeeper_resolver *r);
+static void zookeeper_maybe_finish_next_locked(zookeeper_resolver *r);
+
+static void zookeeper_shutdown(grpc_resolver *r);
+static void zookeeper_channel_saw_error(grpc_resolver *r,
+                                        struct sockaddr *failing_address,
+                                        int failing_address_len);
+static void zookeeper_next(grpc_resolver *r, grpc_client_config **target_config,
+                           grpc_iomgr_closure *on_complete);
+
+static const grpc_resolver_vtable zookeeper_resolver_vtable = {
+    zookeeper_destroy, zookeeper_shutdown, zookeeper_channel_saw_error,
+    zookeeper_next};
+
+static void zookeeper_shutdown(grpc_resolver *resolver) {
+  zookeeper_resolver *r = (zookeeper_resolver *)resolver;
+  gpr_mu_lock(&r->mu);
+  if (r->next_completion != NULL) {
+    *r->target_config = NULL;
+    grpc_iomgr_add_callback(r->next_completion);
+    r->next_completion = NULL;
+  }
+  zookeeper_close(r->zookeeper_handle);
+  gpr_mu_unlock(&r->mu);
+}
+
+static void zookeeper_channel_saw_error(grpc_resolver *resolver,
+                                        struct sockaddr *sa, int len) {
+  zookeeper_resolver *r = (zookeeper_resolver *)resolver;
+  gpr_mu_lock(&r->mu);
+  if (r->resolving == 0) {
+    zookeeper_start_resolving_locked(r);
+  }
+  gpr_mu_unlock(&r->mu);
+}
+
+static void zookeeper_next(grpc_resolver *resolver,
+                           grpc_client_config **target_config,
+                           grpc_iomgr_closure *on_complete) {
+  zookeeper_resolver *r = (zookeeper_resolver *)resolver;
+  gpr_mu_lock(&r->mu);
+  GPR_ASSERT(r->next_completion == NULL);
+  r->next_completion = on_complete;
+  r->target_config = target_config;
+  if (r->resolved_version == 0 && r->resolving == 0) {
+    zookeeper_start_resolving_locked(r);
+  } else {
+    zookeeper_maybe_finish_next_locked(r);
+  }
+  gpr_mu_unlock(&r->mu);
+}
+
+/** Zookeeper global watcher for connection management 
+    TODO: better connection management besides logs */
+static void zookeeper_global_watcher(zhandle_t *zookeeper_handle, int type,
+                                     int state, const char *path,
+                                     void *watcher_ctx) {
+  if (type == ZOO_SESSION_EVENT) {
+    if (state == ZOO_EXPIRED_SESSION_STATE) {
+      gpr_log(GPR_ERROR, "Zookeeper session expired");
+    } else if (state == ZOO_AUTH_FAILED_STATE) {
+      gpr_log(GPR_ERROR, "Zookeeper authentication failed");
+    }
+  }
+}
+
+/** Zookeeper watcher triggered by changes to watched nodes
+    Once triggered, it tries to resolve again to get updated addresses */
+static void zookeeper_watcher(zhandle_t *zookeeper_handle, int type, int state,
+                              const char *path, void *watcher_ctx) {
+  if (watcher_ctx != NULL) {
+    zookeeper_resolver *r = (zookeeper_resolver *)watcher_ctx;
+    if (state == ZOO_CONNECTED_STATE) {
+      gpr_mu_lock(&r->mu);
+      if (r->resolving == 0) {
+        zookeeper_start_resolving_locked(r);
+      }
+      gpr_mu_unlock(&r->mu);
+    }
+  }
+}
+
+/** Callback function after getting all resolved addresses  
+    Creates a subchannel for each address */
+static void zookeeper_on_resolved(void *arg,
+                                  grpc_resolved_addresses *addresses) {
+  zookeeper_resolver *r = arg;
+  grpc_client_config *config = NULL;
+  grpc_subchannel **subchannels;
+  grpc_subchannel_args args;
+  grpc_lb_policy *lb_policy;
+  size_t i;
+  if (addresses != NULL) {
+    config = grpc_client_config_create();
+    subchannels = gpr_malloc(sizeof(grpc_subchannel *) * addresses->naddrs);
+    for (i = 0; i < addresses->naddrs; i++) {
+      memset(&args, 0, sizeof(args));
+      args.addr = (struct sockaddr *)(addresses->addrs[i].addr);
+      args.addr_len = addresses->addrs[i].len;
+      subchannels[i] = grpc_subchannel_factory_create_subchannel(
+          r->subchannel_factory, &args);
+    }
+    lb_policy = r->lb_policy_factory(subchannels, addresses->naddrs);
+    grpc_client_config_set_lb_policy(config, lb_policy);
+    GRPC_LB_POLICY_UNREF(lb_policy, "construction");
+    grpc_resolved_addresses_destroy(addresses);
+    gpr_free(subchannels);
+  }
+  gpr_mu_lock(&r->mu);
+  GPR_ASSERT(r->resolving == 1);
+  r->resolving = 0;
+  if (r->resolved_config != NULL) {
+    grpc_client_config_unref(r->resolved_config);
+  }
+  r->resolved_config = config;
+  r->resolved_version++;
+  zookeeper_maybe_finish_next_locked(r);
+  gpr_mu_unlock(&r->mu);
+
+  GRPC_RESOLVER_UNREF(&r->base, "zookeeper-resolving");
+}
+
+/** Callback function for each DNS resolved address */
+static void zookeeper_dns_resolved(void *arg,
+                                   grpc_resolved_addresses *addresses) {
+  size_t i;
+  zookeeper_resolver *r = arg;
+  int resolve_done = 0;
+
+  gpr_mu_lock(&r->mu);
+  r->resolved_num++;
+  r->resolved_addrs->addrs =
+      gpr_realloc(r->resolved_addrs->addrs,
+                  sizeof(grpc_resolved_address) *
+                      (r->resolved_addrs->naddrs + addresses->naddrs));
+  for (i = 0; i < addresses->naddrs; i++) {
+    memcpy(r->resolved_addrs->addrs[i + r->resolved_addrs->naddrs].addr,
+           addresses->addrs[i].addr, addresses->addrs[i].len);
+    r->resolved_addrs->addrs[i + r->resolved_addrs->naddrs].len =
+        addresses->addrs[i].len;
+  }
+
+  r->resolved_addrs->naddrs += addresses->naddrs;
+  grpc_resolved_addresses_destroy(addresses);
+
+  /** Wait for all addresses to be resolved */
+  resolve_done = (r->resolved_num == r->resolved_total);
+  gpr_mu_unlock(&r->mu);
+  if (resolve_done) {
+    zookeeper_on_resolved(r, r->resolved_addrs);
+  }
+}
+
+/** Parses JSON format address of a zookeeper node */
+static char *zookeeper_parse_address(const char *value, int value_len) {
+  grpc_json *json;
+  grpc_json *cur;
+  const char *host;
+  const char *port;
+  char* buffer;
+  char *address = NULL;
+
+  buffer = gpr_malloc(value_len);
+  memcpy(buffer, value, value_len);
+  json = grpc_json_parse_string_with_len(buffer, value_len);
+  if (json != NULL) {
+    host = NULL;
+    port = NULL;
+    for (cur = json->child; cur != NULL; cur = cur->next) {
+      if (!strcmp(cur->key, "host")) {
+        host = cur->value;
+        if (port != NULL) {
+          break;
+        }
+      } else if (!strcmp(cur->key, "port")) {
+        port = cur->value;
+        if (host != NULL) {
+          break;
+        }
+      }
+    }
+    if (host != NULL && port != NULL) {
+      gpr_asprintf(&address, "%s:%s", host, port);
+    }
+    grpc_json_destroy(json);
+  }
+  gpr_free(buffer);
+
+  return address;
+}
+
+static void zookeeper_get_children_node_completion(int rc, const char *value,
+                                                   int value_len,
+                                                   const struct Stat *stat,
+                                                   const void *arg) {
+  char *address = NULL;
+  zookeeper_resolver *r = (zookeeper_resolver *)arg;
+  int resolve_done = 0;
+
+  if (rc != 0) {
+    gpr_log(GPR_ERROR, "Error in getting a child node of %s", r->name);
+    return;
+  }
+
+  address = zookeeper_parse_address(value, value_len);
+  if (address != NULL) {
+    /** Further resolves address by DNS */
+    grpc_resolve_address(address, NULL, zookeeper_dns_resolved, r);
+    gpr_free(address);
+  } else {
+    gpr_log(GPR_ERROR, "Error in resolving a child node of %s", r->name);
+    gpr_mu_lock(&r->mu);
+    r->resolved_total--;
+    resolve_done = (r->resolved_num == r->resolved_total);
+    gpr_mu_unlock(&r->mu);
+    if (resolve_done) {
+      zookeeper_on_resolved(r, r->resolved_addrs);
+    }
+  }
+}
+
+static void zookeeper_get_children_completion(
+    int rc, const struct String_vector *children, const void *arg) {
+  char *path;
+  int status;
+  int i;
+  zookeeper_resolver *r = (zookeeper_resolver *)arg;
+
+  if (rc != 0) {
+    gpr_log(GPR_ERROR, "Error in getting zookeeper children of %s", r->name);
+    return;
+  }
+
+  if (children->count == 0) {
+    gpr_log(GPR_ERROR, "Error in resolving zookeeper address %s", r->name);
+    return;
+  }
+
+  r->resolved_addrs = gpr_malloc(sizeof(grpc_resolved_addresses));
+  r->resolved_addrs->addrs = NULL;
+  r->resolved_addrs->naddrs = 0;
+  r->resolved_total = children->count;
+
+  /** TODO: Replace expensive heap allocation with stack
+      if we can get maximum length of zookeeper path */
+  for (i = 0; i < children->count; i++) {
+    gpr_asprintf(&path, "%s/%s", r->name, children->data[i]);
+    status = zoo_awget(r->zookeeper_handle, path, zookeeper_watcher, r,
+                       zookeeper_get_children_node_completion, r);
+    gpr_free(path);
+    if (status != 0) {
+      gpr_log(GPR_ERROR, "Error in getting zookeeper node %s", path);
+    }
+  }
+}
+
+static void zookeeper_get_node_completion(int rc, const char *value,
+                                          int value_len,
+                                          const struct Stat *stat,
+                                          const void *arg) {
+  int status;
+  char *address = NULL;
+  zookeeper_resolver *r = (zookeeper_resolver *)arg;
+  r->resolved_addrs = NULL;
+  r->resolved_total = 0;
+  r->resolved_num = 0;
+
+  if (rc != 0) {
+    gpr_log(GPR_ERROR, "Error in getting zookeeper node %s", r->name);
+    return;
+  }
+
+  /** If zookeeper node of path r->name does not have address
+      (i.e. service node), get its children */
+  address = zookeeper_parse_address(value, value_len);
+  if (address != NULL) {
+    r->resolved_addrs = gpr_malloc(sizeof(grpc_resolved_addresses));
+    r->resolved_addrs->addrs = NULL;
+    r->resolved_addrs->naddrs = 0;
+    r->resolved_total = 1;
+    /** Further resolves address by DNS */
+    grpc_resolve_address(address, NULL, zookeeper_dns_resolved, r);
+    gpr_free(address);
+    return;
+  }
+
+  status = zoo_awget_children(r->zookeeper_handle, r->name, zookeeper_watcher,
+                              r, zookeeper_get_children_completion, r);
+  if (status != 0) {
+    gpr_log(GPR_ERROR, "Error in getting zookeeper children of %s", r->name);
+  }
+}
+
+static void zookeeper_resolve_address(zookeeper_resolver *r) {
+  int status;
+  status = zoo_awget(r->zookeeper_handle, r->name, zookeeper_watcher, r,
+                     zookeeper_get_node_completion, r);
+  if (status != 0) {
+    gpr_log(GPR_ERROR, "Error in getting zookeeper node %s", r->name);
+  }
+}
+
+static void zookeeper_start_resolving_locked(zookeeper_resolver *r) {
+  GRPC_RESOLVER_REF(&r->base, "zookeeper-resolving");
+  GPR_ASSERT(r->resolving == 0);
+  r->resolving = 1;
+  zookeeper_resolve_address(r);
+}
+
+static void zookeeper_maybe_finish_next_locked(zookeeper_resolver *r) {
+  if (r->next_completion != NULL &&
+      r->resolved_version != r->published_version) {
+    *r->target_config = r->resolved_config;
+    if (r->resolved_config != NULL) {
+      grpc_client_config_ref(r->resolved_config);
+    }
+    grpc_iomgr_add_callback(r->next_completion);
+    r->next_completion = NULL;
+    r->published_version = r->resolved_version;
+  }
+}
+
+static void zookeeper_destroy(grpc_resolver *gr) {
+  zookeeper_resolver *r = (zookeeper_resolver *)gr;
+  gpr_mu_destroy(&r->mu);
+  if (r->resolved_config != NULL) {
+    grpc_client_config_unref(r->resolved_config);
+  }
+  grpc_subchannel_factory_unref(r->subchannel_factory);
+  gpr_free(r->name);
+  gpr_free(r);
+}
+
+static grpc_resolver *zookeeper_create(
+    grpc_uri *uri,
+    grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels,
+                                         size_t num_subchannels),
+    grpc_subchannel_factory *subchannel_factory) {
+  zookeeper_resolver *r;
+  size_t length;
+  char *path = uri->path;
+
+  if (0 == strcmp(uri->authority, "")) {
+    gpr_log(GPR_ERROR, "No authority specified in zookeeper uri");
+    return NULL;
+  }
+
+  /** Removes the trailing slash if exists */
+  length = strlen(path);
+  if (length > 1 && path[length - 1] == '/') {
+    path[length - 1] = 0;
+  }
+
+  r = gpr_malloc(sizeof(zookeeper_resolver));
+  memset(r, 0, sizeof(*r));
+  gpr_ref_init(&r->refs, 1);
+  gpr_mu_init(&r->mu);
+  grpc_resolver_init(&r->base, &zookeeper_resolver_vtable);
+  r->name = gpr_strdup(path);
+  
+  r->subchannel_factory = subchannel_factory;
+  r->lb_policy_factory = lb_policy_factory;
+  grpc_subchannel_factory_ref(subchannel_factory);
+
+  /** Initializes zookeeper client */
+  zoo_set_debug_level(ZOO_LOG_LEVEL_WARN);
+  r->zookeeper_handle = zookeeper_init(uri->authority, zookeeper_global_watcher,
+                                       GRPC_ZOOKEEPER_SESSION_TIMEOUT, 0, 0, 0);
+  if (r->zookeeper_handle == NULL) {
+    gpr_log(GPR_ERROR, "Unable to connect to zookeeper server");
+    return NULL;
+  }
+
+  return &r->base;
+}
+
+static void zookeeper_plugin_init() {
+  grpc_register_resolver_type("zookeeper",
+                              grpc_zookeeper_resolver_factory_create());
+}
+
+void grpc_zookeeper_register() {
+  grpc_register_plugin(zookeeper_plugin_init, NULL);
+}
+
+/*
+ * FACTORY
+ */
+
+static void zookeeper_factory_ref(grpc_resolver_factory *factory) {}
+
+static void zookeeper_factory_unref(grpc_resolver_factory *factory) {}
+
+static grpc_resolver *zookeeper_factory_create_resolver(
+    grpc_resolver_factory *factory, grpc_uri *uri,
+    grpc_subchannel_factory *subchannel_factory) {
+  return zookeeper_create(uri, grpc_create_pick_first_lb_policy,
+                          subchannel_factory);
+}
+
+static const grpc_resolver_factory_vtable zookeeper_factory_vtable = {
+    zookeeper_factory_ref, zookeeper_factory_unref,
+    zookeeper_factory_create_resolver};
+static grpc_resolver_factory zookeeper_resolver_factory = {
+    &zookeeper_factory_vtable};
+
+grpc_resolver_factory *grpc_zookeeper_resolver_factory_create() {
+  return &zookeeper_resolver_factory;
+}
diff --git a/src/core/client_config/resolvers/zookeeper_resolver.h b/src/core/client_config/resolvers/zookeeper_resolver.h
new file mode 100644
index 0000000..a6f002d
--- /dev/null
+++ b/src/core/client_config/resolvers/zookeeper_resolver.h
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CORE_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H
+#define GRPC_INTERNAL_CORE_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H
+
+#include "src/core/client_config/resolver_factory.h"
+
+/** Create a zookeeper resolver factory */
+grpc_resolver_factory *grpc_zookeeper_resolver_factory_create(void);
+
+#endif /* GRPC_INTERNAL_CORE_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H */
diff --git a/src/core/surface/init.c b/src/core/surface/init.c
index 442bc72..d904454 100644
--- a/src/core/surface/init.c
+++ b/src/core/surface/init.c
@@ -33,8 +33,11 @@
 
 #include <grpc/support/port_platform.h>
 
+#include <memory.h>
+
 #include <grpc/census.h>
 #include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
 #include <grpc/support/time.h>
 #include "src/core/channel/channel_stack.h"
 #include "src/core/client_config/resolver_registry.h"
@@ -49,6 +52,8 @@
 #include "src/core/transport/chttp2_transport.h"
 #include "src/core/transport/connectivity_state.h"
 
+#define MAX_PLUGINS 128
+
 static gpr_once g_basic_init = GPR_ONCE_INIT;
 static gpr_mu g_init_mu;
 static int g_initializations;
@@ -58,7 +63,23 @@
   g_initializations = 0;
 }
 
+typedef struct grpc_plugin {
+  void (*init)();
+  void (*destroy)();
+} grpc_plugin;
+
+static grpc_plugin g_all_of_the_plugins[MAX_PLUGINS];
+static int g_number_of_plugins = 0;
+
+void grpc_register_plugin(void (*init)(void), void (*destroy)(void)) {
+  GPR_ASSERT(g_number_of_plugins != MAX_PLUGINS);
+  g_all_of_the_plugins[g_number_of_plugins].init = init;
+  g_all_of_the_plugins[g_number_of_plugins].destroy = destroy;
+  g_number_of_plugins++;
+}
+
 void grpc_init(void) {
+  int i;
   gpr_once_init(&g_basic_init, do_basic_init);
 
   gpr_mu_lock(&g_init_mu);
@@ -87,11 +108,17 @@
       }
     }
     grpc_timers_global_init();
+    for (i = 0; i < g_number_of_plugins; i++) {
+      if (g_all_of_the_plugins[i].init != NULL) {
+        g_all_of_the_plugins[i].init();
+      }
+    }
   }
   gpr_mu_unlock(&g_init_mu);
 }
 
 void grpc_shutdown(void) {
+  int i;
   gpr_mu_lock(&g_init_mu);
   if (--g_initializations == 0) {
     grpc_iomgr_shutdown();
@@ -99,6 +126,11 @@
     grpc_timers_global_destroy();
     grpc_tracer_shutdown();
     grpc_resolver_registry_shutdown();
+    for (i = 0; i < g_number_of_plugins; i++) {
+      if (g_all_of_the_plugins[i].destroy != NULL) {
+        g_all_of_the_plugins[i].destroy();
+      }
+    }
   }
   gpr_mu_unlock(&g_init_mu);
 }
diff --git a/src/node/examples/perf_test.js b/src/node/examples/perf_test.js
index 214b938..ba8fbf8 100644
--- a/src/node/examples/perf_test.js
+++ b/src/node/examples/perf_test.js
@@ -40,7 +40,7 @@
 
 function runTest(iterations, callback) {
   var testServer = interop_server.getServer(0, false);
-  testServer.server.listen();
+  testServer.server.start();
   var client = new testProto.TestService('localhost:' + testServer.port,
                                          grpc.Credentials.createInsecure());
 
diff --git a/src/node/examples/qps_test.js b/src/node/examples/qps_test.js
index 1ce4dbe..ec968b8 100644
--- a/src/node/examples/qps_test.js
+++ b/src/node/examples/qps_test.js
@@ -60,7 +60,7 @@
  */
 function runTest(concurrent_calls, seconds, callback) {
   var testServer = interop_server.getServer(0, false);
-  testServer.server.listen();
+  testServer.server.start();
   var client = new testProto.TestService('localhost:' + testServer.port,
                                          grpc.Credentials.createInsecure());
 
diff --git a/src/node/examples/route_guide_server.js b/src/node/examples/route_guide_server.js
index bb8e79b..465b32f 100644
--- a/src/node/examples/route_guide_server.js
+++ b/src/node/examples/route_guide_server.js
@@ -248,7 +248,7 @@
       throw err;
     }
     feature_list = JSON.parse(data);
-    routeServer.listen();
+    routeServer.start();
   });
 }
 
diff --git a/src/node/examples/stock_server.js b/src/node/examples/stock_server.js
index dfcfe30..12e5479 100644
--- a/src/node/examples/stock_server.js
+++ b/src/node/examples/stock_server.js
@@ -81,7 +81,7 @@
 
 if (require.main === module) {
   stockServer.bind('0.0.0.0:50051', grpc.ServerCredentials.createInsecure());
-  stockServer.listen();
+  stockServer.start();
 }
 
 module.exports = stockServer;
diff --git a/src/node/ext/channel.cc b/src/node/ext/channel.cc
index 45d0d09..a61c830 100644
--- a/src/node/ext/channel.cc
+++ b/src/node/ext/channel.cc
@@ -33,12 +33,17 @@
 
 #include <vector>
 
+#include "grpc/support/log.h"
+
 #include <node.h>
 #include <nan.h>
 #include "grpc/grpc.h"
 #include "grpc/grpc_security.h"
+#include "call.h"
 #include "channel.h"
+#include "completion_queue_async_worker.h"
 #include "credentials.h"
+#include "timeval.h"
 
 namespace grpc {
 namespace node {
@@ -51,6 +56,7 @@
 using v8::HandleScope;
 using v8::Integer;
 using v8::Local;
+using v8::Number;
 using v8::Object;
 using v8::Persistent;
 using v8::String;
@@ -76,6 +82,12 @@
                           NanNew<FunctionTemplate>(Close)->GetFunction());
   NanSetPrototypeTemplate(tpl, "getTarget",
                           NanNew<FunctionTemplate>(GetTarget)->GetFunction());
+  NanSetPrototypeTemplate(
+      tpl, "getConnectivityState",
+      NanNew<FunctionTemplate>(GetConnectivityState)->GetFunction());
+  NanSetPrototypeTemplate(
+      tpl, "watchConnectivityState",
+      NanNew<FunctionTemplate>(WatchConnectivityState)->GetFunction());
   NanAssignPersistent(fun_tpl, tpl);
   Handle<Function> ctr = tpl->GetFunction();
   constructor = new NanCallback(ctr);
@@ -186,5 +198,52 @@
   NanReturnValue(NanNew(grpc_channel_get_target(channel->wrapped_channel)));
 }
 
+NAN_METHOD(Channel::GetConnectivityState) {
+  NanScope();
+  if (!HasInstance(args.This())) {
+    return NanThrowTypeError(
+        "getConnectivityState can only be called on Channel objects");
+  }
+  Channel *channel = ObjectWrap::Unwrap<Channel>(args.This());
+  int try_to_connect = (int)args[0]->Equals(NanTrue());
+  NanReturnValue(grpc_channel_check_connectivity_state(channel->wrapped_channel,
+                                                       try_to_connect));
+}
+
+NAN_METHOD(Channel::WatchConnectivityState) {
+  NanScope();
+  if (!HasInstance(args.This())) {
+    return NanThrowTypeError(
+        "watchConnectivityState can only be called on Channel objects");
+  }
+  if (!args[0]->IsUint32()) {
+    return NanThrowTypeError(
+        "watchConnectivityState's first argument must be a channel state");
+  }
+  if (!(args[1]->IsNumber() || args[1]->IsDate())) {
+    return NanThrowTypeError(
+        "watchConnectivityState's second argument must be a date or a number");
+  }
+  if (!args[2]->IsFunction()) {
+    return NanThrowTypeError(
+        "watchConnectivityState's third argument must be a callback");
+  }
+  grpc_connectivity_state last_state =
+      static_cast<grpc_connectivity_state>(args[0]->Uint32Value());
+  double deadline = args[1]->NumberValue();
+  Handle<Function> callback_func = args[2].As<Function>();
+  NanCallback *callback = new NanCallback(callback_func);
+  Channel *channel = ObjectWrap::Unwrap<Channel>(args.This());
+  unique_ptr<OpVec> ops(new OpVec());
+  grpc_channel_watch_connectivity_state(
+      channel->wrapped_channel, last_state, MillisecondsToTimespec(deadline),
+      CompletionQueueAsyncWorker::GetQueue(),
+      new struct tag(callback,
+                     ops.release(),
+                     shared_ptr<Resources>(nullptr)));
+  CompletionQueueAsyncWorker::Next();
+  NanReturnUndefined();
+}
+
 }  // namespace node
 }  // namespace grpc
diff --git a/src/node/ext/channel.h b/src/node/ext/channel.h
index e2182cb..458f71d 100644
--- a/src/node/ext/channel.h
+++ b/src/node/ext/channel.h
@@ -64,6 +64,8 @@
   static NAN_METHOD(New);
   static NAN_METHOD(Close);
   static NAN_METHOD(GetTarget);
+  static NAN_METHOD(GetConnectivityState);
+  static NAN_METHOD(WatchConnectivityState);
   static NanCallback *constructor;
   static v8::Persistent<v8::FunctionTemplate> fun_tpl;
 
diff --git a/src/node/ext/completion_queue_async_worker.cc b/src/node/ext/completion_queue_async_worker.cc
index 4501e84..bf2cd94 100644
--- a/src/node/ext/completion_queue_async_worker.cc
+++ b/src/node/ext/completion_queue_async_worker.cc
@@ -65,7 +65,7 @@
   result =
       grpc_completion_queue_next(queue, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
   if (!result.success) {
-    SetErrorMessage("The batch encountered an error");
+    SetErrorMessage("The async function encountered an error");
   }
 }
 
diff --git a/src/node/ext/node_grpc.cc b/src/node/ext/node_grpc.cc
index 4e31cba..331ccb6 100644
--- a/src/node/ext/node_grpc.cc
+++ b/src/node/ext/node_grpc.cc
@@ -159,12 +159,31 @@
   op_type->Set(NanNew("RECV_CLOSE_ON_SERVER"), RECV_CLOSE_ON_SERVER);
 }
 
+void InitConnectivityStateConstants(Handle<Object> exports) {
+  NanScope();
+  Handle<Object> channel_state = NanNew<Object>();
+  exports->Set(NanNew("connectivityState"), channel_state);
+  Handle<Value> IDLE(NanNew<Uint32, uint32_t>(GRPC_CHANNEL_IDLE));
+  channel_state->Set(NanNew("IDLE"), IDLE);
+  Handle<Value> CONNECTING(NanNew<Uint32, uint32_t>(GRPC_CHANNEL_CONNECTING));
+  channel_state->Set(NanNew("CONNECTING"), CONNECTING);
+  Handle<Value> READY(NanNew<Uint32, uint32_t>(GRPC_CHANNEL_READY));
+  channel_state->Set(NanNew("READY"), READY);
+  Handle<Value> TRANSIENT_FAILURE(
+      NanNew<Uint32, uint32_t>(GRPC_CHANNEL_TRANSIENT_FAILURE));
+  channel_state->Set(NanNew("TRANSIENT_FAILURE"), TRANSIENT_FAILURE);
+  Handle<Value> FATAL_FAILURE(
+      NanNew<Uint32, uint32_t>(GRPC_CHANNEL_FATAL_FAILURE));
+  channel_state->Set(NanNew("FATAL_FAILURE"), FATAL_FAILURE);
+}
+
 void init(Handle<Object> exports) {
   NanScope();
   grpc_init();
   InitStatusConstants(exports);
   InitCallErrorConstants(exports);
   InitOpTypeConstants(exports);
+  InitConnectivityStateConstants(exports);
 
   grpc::node::Call::Init(exports);
   grpc::node::Channel::Init(exports);
diff --git a/src/node/interop/interop_server.js b/src/node/interop/interop_server.js
index ece22cc..1242a0f 100644
--- a/src/node/interop/interop_server.js
+++ b/src/node/interop/interop_server.js
@@ -194,7 +194,7 @@
   });
   var server_obj = getServer(argv.port, argv.use_tls === 'true');
   console.log('Server attaching to port ' + argv.port);
-  server_obj.server.listen();
+  server_obj.server.start();
 }
 
 /**
diff --git a/src/node/src/client.js b/src/node/src/client.js
index 5cde438..d14713f 100644
--- a/src/node/src/client.js
+++ b/src/node/src/client.js
@@ -558,6 +558,35 @@
     this.updateMetadata = updateMetadata;
   }
 
+  /**
+   * Wait for the client to be ready. The callback will be called when the
+   * client has successfully connected to the server, and it will be called
+   * with an error if the attempt to connect to the server has unrecoverablly
+   * failed or if the deadline expires. This function will make the channel
+   * start connecting if it has not already done so.
+   * @param {(Date|Number)} deadline When to stop waiting for a connection. Pass
+   *     Infinity to wait forever.
+   * @param {function(Error)} callback The callback to call when done attempting
+   *     to connect.
+   */
+  Client.prototype.$waitForReady = function(deadline, callback) {
+    var self = this;
+    var checkState = function(err) {
+      if (err) {
+        callback(new Error('Failed to connect before the deadline'));
+      }
+      var new_state = self.channel.getConnectivityState(true);
+      if (new_state === grpc.connectivityState.READY) {
+        callback();
+      } else if (new_state === grpc.connectivityState.FATAL_FAILURE) {
+        callback(new Error('Failed to connect to server'));
+      } else {
+        self.channel.watchConnectivityState(new_state, deadline, checkState);
+      }
+    };
+    checkState();
+  };
+
   _.each(methods, function(attrs, name) {
     var method_type;
     if (attrs.requestStream) {
diff --git a/src/node/test/channel_test.js b/src/node/test/channel_test.js
index c991d7b..d81df2a 100644
--- a/src/node/test/channel_test.js
+++ b/src/node/test/channel_test.js
@@ -36,6 +36,26 @@
 var assert = require('assert');
 var grpc = require('bindings')('grpc.node');
 
+/**
+ * This is used for testing functions with multiple asynchronous calls that
+ * can happen in different orders. This should be passed the number of async
+ * function invocations that can occur last, and each of those should call this
+ * function's return value
+ * @param {function()} done The function that should be called when a test is
+ *     complete.
+ * @param {number} count The number of calls to the resulting function if the
+ *     test passes.
+ * @return {function()} The function that should be called at the end of each
+ *     sequence of asynchronous functions.
+ */
+function multiDone(done, count) {
+  return function() {
+    count -= 1;
+    if (count <= 0) {
+      done();
+    }
+  };
+}
 var insecureCreds = grpc.Credentials.createInsecure();
 
 describe('channel', function() {
@@ -86,14 +106,16 @@
     });
   });
   describe('close', function() {
+    var channel;
+    beforeEach(function() {
+      channel = new grpc.Channel('hostname', insecureCreds, {});
+    });
     it('should succeed silently', function() {
-      var channel = new grpc.Channel('hostname', insecureCreds, {});
       assert.doesNotThrow(function() {
         channel.close();
       });
     });
     it('should be idempotent', function() {
-      var channel = new grpc.Channel('hostname', insecureCreds, {});
       assert.doesNotThrow(function() {
         channel.close();
         channel.close();
@@ -101,9 +123,68 @@
     });
   });
   describe('getTarget', function() {
+    var channel;
+    beforeEach(function() {
+      channel = new grpc.Channel('hostname', insecureCreds, {});
+    });
     it('should return a string', function() {
-      var channel = new grpc.Channel('localhost', insecureCreds, {});
       assert.strictEqual(typeof channel.getTarget(), 'string');
     });
   });
+  describe('getConnectivityState', function() {
+    var channel;
+    beforeEach(function() {
+      channel = new grpc.Channel('hostname', insecureCreds, {});
+    });
+    it('should return IDLE for a new channel', function() {
+      assert.strictEqual(channel.getConnectivityState(),
+                         grpc.connectivityState.IDLE);
+    });
+  });
+  describe('watchConnectivityState', function() {
+    var channel;
+    beforeEach(function() {
+      channel = new grpc.Channel('localhost', insecureCreds, {});
+    });
+    afterEach(function() {
+      channel.close();
+    });
+    it('should time out if called alone', function(done) {
+      var old_state = channel.getConnectivityState();
+      var deadline = new Date();
+      deadline.setSeconds(deadline.getSeconds() + 1);
+      channel.watchConnectivityState(old_state, deadline, function(err, value) {
+        assert(err);
+        done();
+      });
+    });
+    it('should complete if a connection attempt is forced', function(done) {
+      var old_state = channel.getConnectivityState();
+      var deadline = new Date();
+      deadline.setSeconds(deadline.getSeconds() + 1);
+      channel.watchConnectivityState(old_state, deadline, function(err, value) {
+        assert.ifError(err);
+        assert.notEqual(value.new_state, old_state);
+        done();
+      });
+      channel.getConnectivityState(true);
+    });
+    it('should complete twice if called twice', function(done) {
+      done = multiDone(done, 2);
+      var old_state = channel.getConnectivityState();
+      var deadline = new Date();
+      deadline.setSeconds(deadline.getSeconds() + 1);
+      channel.watchConnectivityState(old_state, deadline, function(err, value) {
+        assert.ifError(err);
+        assert.notEqual(value.new_state, old_state);
+        done();
+      });
+      channel.watchConnectivityState(old_state, deadline, function(err, value) {
+        assert.ifError(err);
+        assert.notEqual(value.new_state, old_state);
+        done();
+      });
+      channel.getConnectivityState(true);
+    });
+  });
 });
diff --git a/src/node/test/constant_test.js b/src/node/test/constant_test.js
index ecc98ec..93bf0c8 100644
--- a/src/node/test/constant_test.js
+++ b/src/node/test/constant_test.js
@@ -78,6 +78,19 @@
   'INVALID_FLAGS'
 ];
 
+/**
+ * List of all connectivity state names
+ * @const
+ * @type {Array.<string>}
+ */
+var connectivityStateNames = [
+  'IDLE',
+  'CONNECTING',
+  'READY',
+  'TRANSIENT_FAILURE',
+  'FATAL_FAILURE'
+];
+
 describe('constants', function() {
   it('should have all of the status constants', function() {
     for (var i = 0; i < statusNames.length; i++) {
@@ -91,4 +104,10 @@
              'call error missing: ' + callErrorNames[i]);
     }
   });
+  it('should have all of the connectivity states', function() {
+    for (var i = 0; i < connectivityStateNames.length; i++) {
+      assert(grpc.connectivityState.hasOwnProperty(connectivityStateNames[i]),
+             'connectivity status missing: ' + connectivityStateNames[i]);
+    }
+  });
 });
diff --git a/src/node/test/server_test.js b/src/node/test/server_test.js
index a9df439..20c9a07 100644
--- a/src/node/test/server_test.js
+++ b/src/node/test/server_test.js
@@ -83,7 +83,7 @@
       server = new grpc.Server();
     });
   });
-  describe('listen', function() {
+  describe('start', function() {
     var server;
     before(function() {
       server = new grpc.Server();
@@ -92,7 +92,7 @@
     after(function() {
       server.shutdown();
     });
-    it('should listen without error', function() {
+    it('should start without error', function() {
       assert.doesNotThrow(function() {
         server.start();
       });
diff --git a/src/node/test/surface_test.js b/src/node/test/surface_test.js
index dda2f8d..098905e 100644
--- a/src/node/test/surface_test.js
+++ b/src/node/test/surface_test.js
@@ -47,6 +47,26 @@
 
 var _ = require('lodash');
 
+/**
+ * This is used for testing functions with multiple asynchronous calls that
+ * can happen in different orders. This should be passed the number of async
+ * function invocations that can occur last, and each of those should call this
+ * function's return value
+ * @param {function()} done The function that should be called when a test is
+ *     complete.
+ * @param {number} count The number of calls to the resulting function if the
+ *     test passes.
+ * @return {function()} The function that should be called at the end of each
+ *     sequence of asynchronous functions.
+ */
+function multiDone(done, count) {
+  return function() {
+    count -= 1;
+    if (count <= 0) {
+      done();
+    }
+  };
+}
 var server_insecure_creds = grpc.ServerCredentials.createInsecure();
 
 describe('File loader', function() {
@@ -112,6 +132,58 @@
     });
   });
 });
+describe('Client#$waitForReady', function() {
+  var server;
+  var port;
+  var Client;
+  var client;
+  before(function() {
+    server = new grpc.Server();
+    port = server.bind('localhost:0', grpc.ServerCredentials.createInsecure());
+    server.start();
+    Client = surface_client.makeProtobufClientConstructor(mathService);
+  });
+  beforeEach(function() {
+    client = new Client('localhost:' + port, grpc.Credentials.createInsecure());
+  });
+  after(function() {
+    server.shutdown();
+  });
+  it('should complete when called alone', function(done) {
+    client.$waitForReady(Infinity, function(error) {
+      assert.ifError(error);
+      done();
+    });
+  });
+  it('should complete when a call is initiated', function(done) {
+    client.$waitForReady(Infinity, function(error) {
+      assert.ifError(error);
+      done();
+    });
+    var call = client.div({}, function(err, response) {});
+    call.cancel();
+  });
+  it('should complete if called more than once', function(done) {
+    done = multiDone(done, 2);
+    client.$waitForReady(Infinity, function(error) {
+      assert.ifError(error);
+      done();
+    });
+    client.$waitForReady(Infinity, function(error) {
+      assert.ifError(error);
+      done();
+    });
+  });
+  it('should complete if called when already ready', function(done) {
+    client.$waitForReady(Infinity, function(error) {
+      assert.ifError(error);
+      client.$waitForReady(Infinity, function(error) {
+        assert.ifError(error);
+        done();
+      });
+    });
+  });
+});
 describe('Echo service', function() {
   var server;
   var client;
diff --git a/src/ruby/bin/interop/interop_client.rb b/src/ruby/bin/interop/interop_client.rb
index da4caa8..78ae217 100755
--- a/src/ruby/bin/interop/interop_client.rb
+++ b/src/ruby/bin/interop/interop_client.rb
@@ -110,6 +110,14 @@
       end
     end
 
+    if opts.test_case == 'oauth2_auth_token'
+      auth_creds = Google::Auth.get_application_default(opts.oauth_scope)
+      kw = auth_creds.updater_proc.call({})  # gives as an auth token
+
+      # use a metadata update proc that just adds the auth token.
+      stub_opts[:update_metadata] = proc { |md| md.merge(kw) }
+    end
+
     if opts.test_case == 'jwt_token_creds'  # don't use a scope
       auth_creds = Google::Auth.get_application_default
       stub_opts[:update_metadata] = auth_creds.updater_proc
@@ -228,6 +236,33 @@
     p 'OK: compute_engine_creds'
   end
 
+  def oauth2_auth_token
+    resp = perform_large_unary(fill_username: true,
+                               fill_oauth_scope: true)
+    json_key = File.read(ENV[AUTH_ENV])
+    wanted_email = MultiJson.load(json_key)['client_email']
+    assert_equal(wanted_email, resp.username,
+                 "#{__callee__}: incorrect username")
+    assert(@args.oauth_scope.include?(resp.oauth_scope),
+           "#{__callee__}: incorrect oauth_scope")
+    p "OK: #{__callee__}"
+  end
+
+  def per_rpc_creds
+    auth_creds = Google::Auth.get_application_default(@args.oauth_scope)
+    kw = auth_creds.updater_proc.call({})
+    resp = perform_large_unary(fill_username: true,
+                               fill_oauth_scope: true,
+                               **kw)
+    json_key = File.read(ENV[AUTH_ENV])
+    wanted_email = MultiJson.load(json_key)['client_email']
+    assert_equal(wanted_email, resp.username,
+                 "#{__callee__}: incorrect username")
+    assert(@args.oauth_scope.include?(resp.oauth_scope),
+           "#{__callee__}: incorrect oauth_scope")
+    p "OK: #{__callee__}"
+  end
+
   def client_streaming
     msg_sizes = [27_182, 8, 1828, 45_904]
     wanted_aggregate_size = 74_922
@@ -265,6 +300,29 @@
     p 'OK: ping_pong'
   end
 
+  def timeout_on_sleeping_server
+    msg_sizes = [[27_182, 31_415]]
+    ppp = PingPongPlayer.new(msg_sizes)
+    resps = @stub.full_duplex_call(ppp.each_item, timeout: 0.001)
+    resps.each { |r| ppp.queue.push(r) }
+    fail 'Should have raised GRPC::BadStatus(DEADLINE_EXCEEDED)'
+  rescue GRPC::BadStatus => e
+    assert_equal(e.code, GRPC::Core::StatusCodes::DEADLINE_EXCEEDED)
+    p "OK: #{__callee__}"
+  end
+
+  def empty_stream
+    ppp = PingPongPlayer.new([])
+    resps = @stub.full_duplex_call(ppp.each_item)
+    count = 0
+    resps.each do
+      |r| ppp.queue.push(r)
+      count += 1
+    end
+    assert_equal(0, count, 'too many responses, expect 0')
+    p 'OK: empty_stream'
+  end
+
   def cancel_after_begin
     msg_sizes = [27_182, 8, 1828, 45_904]
     reqs = msg_sizes.map do |x|
@@ -283,7 +341,7 @@
     ppp = PingPongPlayer.new(msg_sizes)
     op = @stub.full_duplex_call(ppp.each_item, return_op: true)
     ppp.canceller_op = op  # causes ppp to cancel after the 1st message
-    op.execute.each { |r| ppp.queue.push(r) }
+    assert_raises(GRPC::Cancelled) { op.execute.each { |r| ppp.queue.push(r) } }
     op.wait
     assert(op.cancelled, 'call operation was not CANCELLED')
     p 'OK: cancel_after_first_response'
@@ -300,7 +358,7 @@
 
   private
 
-  def perform_large_unary(fill_username: false, fill_oauth_scope: false)
+  def perform_large_unary(fill_username: false, fill_oauth_scope: false, **kw)
     req_size, wanted_response_size = 271_828, 314_159
     payload = Payload.new(type: :COMPRESSABLE, body: nulls(req_size))
     req = SimpleRequest.new(response_type: :COMPRESSABLE,
@@ -308,7 +366,7 @@
                             payload: payload)
     req.fill_username = fill_username
     req.fill_oauth_scope = fill_oauth_scope
-    resp = @stub.unary_call(req)
+    resp = @stub.unary_call(req, **kw)
     assert_equal(:COMPRESSABLE, resp.payload.type,
                  'large_unary: payload had the wrong type')
     assert_equal(wanted_response_size, resp.payload.body.length,
diff --git a/src/ruby/ext/grpc/rb_call.c b/src/ruby/ext/grpc/rb_call.c
index 70f0795..b09d4e2 100644
--- a/src/ruby/ext/grpc/rb_call.c
+++ b/src/ruby/ext/grpc/rb_call.c
@@ -629,13 +629,9 @@
     rb_raise(grpc_rb_eOutOfTime, "grpc_call_start_batch timed out");
     return Qnil;
   }
-  if (!ev.success) {
-    grpc_run_batch_stack_cleanup(&st);
-    rb_raise(grpc_rb_eCallError, "start_batch completion failed");
-    return Qnil;
-  }
 
-  /* Build and return the BatchResult struct result */
+  /* Build and return the BatchResult struct result,
+     if there is an error, it's reflected in the status */
   result = grpc_run_batch_stack_build_result(&st);
   grpc_run_batch_stack_cleanup(&st);
   return result;
diff --git a/src/ruby/lib/grpc/generic/active_call.rb b/src/ruby/lib/grpc/generic/active_call.rb
index 215c006..17da401 100644
--- a/src/ruby/lib/grpc/generic/active_call.rb
+++ b/src/ruby/lib/grpc/generic/active_call.rb
@@ -74,8 +74,7 @@
     #
     # @param call [Call] a call on which to start and invocation
     # @param q [CompletionQueue] the completion queue
-    # @param deadline [Fixnum,TimeSpec] the deadline
-    def self.client_invoke(call, q, _deadline, **kw)
+    def self.client_invoke(call, q, **kw)
       fail(TypeError, '!Core::Call') unless call.is_a? Core::Call
       unless q.is_a? Core::CompletionQueue
         fail(TypeError, '!Core::CompletionQueue')
@@ -418,7 +417,7 @@
     # @return [Enumerator, nil] a response Enumerator
     def bidi_streamer(requests, **kw, &blk)
       start_call(**kw) unless @started
-      bd = BidiCall.new(@call, @cq, @marshal, @unmarshal, @deadline)
+      bd = BidiCall.new(@call, @cq, @marshal, @unmarshal)
       bd.run_on_client(requests, @op_notifier, &blk)
     end
 
@@ -434,7 +433,7 @@
     #
     # @param gen_each_reply [Proc] generates the BiDi stream replies
     def run_server_bidi(gen_each_reply)
-      bd = BidiCall.new(@call, @cq, @marshal, @unmarshal, @deadline)
+      bd = BidiCall.new(@call, @cq, @marshal, @unmarshal)
       bd.run_on_server(gen_each_reply)
     end
 
@@ -456,7 +455,7 @@
     # Starts the call if not already started
     def start_call(**kw)
       return if @started
-      @metadata_tag = ActiveCall.client_invoke(@call, @cq, @deadline, **kw)
+      @metadata_tag = ActiveCall.client_invoke(@call, @cq, **kw)
       @started = true
     end
 
diff --git a/src/ruby/lib/grpc/generic/bidi_call.rb b/src/ruby/lib/grpc/generic/bidi_call.rb
index 3b0c713..9dbbb74 100644
--- a/src/ruby/lib/grpc/generic/bidi_call.rb
+++ b/src/ruby/lib/grpc/generic/bidi_call.rb
@@ -56,15 +56,13 @@
     #          the call
     # @param marshal [Function] f(obj)->string that marshal requests
     # @param unmarshal [Function] f(string)->obj that unmarshals responses
-    # @param deadline [Fixnum] the deadline for the call to complete
-    def initialize(call, q, marshal, unmarshal, deadline)
+    def initialize(call, q, marshal, unmarshal)
       fail(ArgumentError, 'not a call') unless call.is_a? Core::Call
       unless q.is_a? Core::CompletionQueue
         fail(ArgumentError, 'not a CompletionQueue')
       end
       @call = call
       @cq = q
-      @deadline = deadline
       @marshal = marshal
       @op_notifier = nil  # signals completion on clients
       @readq = Queue.new
@@ -99,7 +97,7 @@
     # @param gen_each_reply [Proc] generates the BiDi stream replies.
     def run_on_server(gen_each_reply)
       replys = gen_each_reply.call(each_queued_msg)
-      @loop_th = start_read_loop
+      @loop_th = start_read_loop(is_client: false)
       write_loop(replys, is_client: false)
     end
 
@@ -127,7 +125,7 @@
         count += 1
         req = @readq.pop
         GRPC.logger.debug("each_queued_msg: req = #{req}")
-        throw req if req.is_a? StandardError
+        fail req if req.is_a? StandardError
         break if req.equal?(END_OF_READS)
         yield req
       end
@@ -147,12 +145,9 @@
       GRPC.logger.debug("bidi-write-loop: #{count} writes done")
       if is_client
         GRPC.logger.debug("bidi-write-loop: client sent #{count}, waiting")
-        batch_result = @call.run_batch(@cq, write_tag, INFINITE_FUTURE,
-                                       SEND_CLOSE_FROM_CLIENT => nil,
-                                       RECV_STATUS_ON_CLIENT => nil)
-        @call.status = batch_result.status
-        batch_result.check_status
-        GRPC.logger.debug("bidi-write-loop: done status #{@call.status}")
+        @call.run_batch(@cq, write_tag, INFINITE_FUTURE,
+                        SEND_CLOSE_FROM_CLIENT => nil)
+        GRPC.logger.debug('bidi-write-loop: done')
         notify_done
       end
       GRPC.logger.debug('bidi-write-loop: finished')
@@ -164,7 +159,7 @@
     end
 
     # starts the read loop
-    def start_read_loop
+    def start_read_loop(is_client: true)
       Thread.new do
         GRPC.logger.debug('bidi-read-loop: starting')
         begin
@@ -177,9 +172,19 @@
             # TODO: ensure metadata is read if available, currently it's not
             batch_result = @call.run_batch(@cq, read_tag, INFINITE_FUTURE,
                                            RECV_MESSAGE => nil)
+
             # handle the next message
             if batch_result.message.nil?
               GRPC.logger.debug("bidi-read-loop: null batch #{batch_result}")
+
+              if is_client
+                batch_result = @call.run_batch(@cq, read_tag, INFINITE_FUTURE,
+                                               RECV_STATUS_ON_CLIENT => nil)
+                @call.status = batch_result.status
+                batch_result.check_status
+                GRPC.logger.debug("bidi-read-loop: done status #{@call.status}")
+              end
+
               @readq.push(END_OF_READS)
               GRPC.logger.debug('bidi-read-loop: done reading!')
               break
diff --git a/src/ruby/lib/grpc/generic/client_stub.rb b/src/ruby/lib/grpc/generic/client_stub.rb
index cce7185..24ec179 100644
--- a/src/ruby/lib/grpc/generic/client_stub.rb
+++ b/src/ruby/lib/grpc/generic/client_stub.rb
@@ -161,15 +161,21 @@
     # @param marshal [Function] f(obj)->string that marshals requests
     # @param unmarshal [Function] f(string)->obj that unmarshals responses
     # @param timeout [Numeric] (optional) the max completion time in seconds
+    # @param deadline [Time] (optional) the time the request should complete
     # @param parent [Core::Call] a prior call whose reserved metadata
     #   will be propagated by this one.
     # @param return_op [true|false] return an Operation if true
     # @return [Object] the response received from the server
-    def request_response(method, req, marshal, unmarshal, timeout = nil,
+    def request_response(method, req, marshal, unmarshal,
+                         deadline: nil,
+                         timeout: nil,
                          return_op: false,
                          parent: parent,
                          **kw)
-      c = new_active_call(method, marshal, unmarshal, timeout, parent: parent)
+      c = new_active_call(method, marshal, unmarshal,
+                          deadline: deadline,
+                          timeout: timeout,
+                          parent: parent)
       kw_with_jwt_uri = self.class.update_with_jwt_aud_uri(kw, @host, method)
       md = @update_metadata.nil? ? kw : @update_metadata.call(kw_with_jwt_uri)
       return c.request_response(req, **md) unless return_op
@@ -222,16 +228,22 @@
     # @param requests [Object] an Enumerable of requests to send
     # @param marshal [Function] f(obj)->string that marshals requests
     # @param unmarshal [Function] f(string)->obj that unmarshals responses
-    # @param timeout [Numeric] the max completion time in seconds
+    # @param timeout [Numeric] (optional) the max completion time in seconds
+    # @param deadline [Time] (optional) the time the request should complete
     # @param return_op [true|false] return an Operation if true
     # @param parent [Core::Call] a prior call whose reserved metadata
     #   will be propagated by this one.
     # @return [Object|Operation] the response received from the server
-    def client_streamer(method, requests, marshal, unmarshal, timeout = nil,
+    def client_streamer(method, requests, marshal, unmarshal,
+                        deadline: nil,
+                        timeout: nil,
                         return_op: false,
                         parent: nil,
                         **kw)
-      c = new_active_call(method, marshal, unmarshal, timeout, parent: parent)
+      c = new_active_call(method, marshal, unmarshal,
+                          deadline: deadline,
+                          timeout: timeout,
+                          parent: parent)
       kw_with_jwt_uri = self.class.update_with_jwt_aud_uri(kw, @host, method)
       md = @update_metadata.nil? ? kw : @update_metadata.call(kw_with_jwt_uri)
       return c.client_streamer(requests, **md) unless return_op
@@ -292,18 +304,24 @@
     # @param req [Object] the request sent to the server
     # @param marshal [Function] f(obj)->string that marshals requests
     # @param unmarshal [Function] f(string)->obj that unmarshals responses
-    # @param timeout [Numeric] the max completion time in seconds
+    # @param timeout [Numeric] (optional) the max completion time in seconds
+    # @param deadline [Time] (optional) the time the request should complete
     # @param return_op [true|false]return an Operation if true
     # @param parent [Core::Call] a prior call whose reserved metadata
     #   will be propagated by this one.
     # @param blk [Block] when provided, is executed for each response
     # @return [Enumerator|Operation|nil] as discussed above
-    def server_streamer(method, req, marshal, unmarshal, timeout = nil,
+    def server_streamer(method, req, marshal, unmarshal,
+                        deadline: nil,
+                        timeout: nil,
                         return_op: false,
                         parent: nil,
                         **kw,
                         &blk)
-      c = new_active_call(method, marshal, unmarshal, timeout, parent: parent)
+      c = new_active_call(method, marshal, unmarshal,
+                          deadline: deadline,
+                          timeout: timeout,
+                          parent: parent)
       kw_with_jwt_uri = self.class.update_with_jwt_aud_uri(kw, @host, method)
       md = @update_metadata.nil? ? kw : @update_metadata.call(kw_with_jwt_uri)
       return c.server_streamer(req, **md, &blk) unless return_op
@@ -404,17 +422,23 @@
     # @param marshal [Function] f(obj)->string that marshals requests
     # @param unmarshal [Function] f(string)->obj that unmarshals responses
     # @param timeout [Numeric] (optional) the max completion time in seconds
+    # @param deadline [Time] (optional) the time the request should complete
     # @param parent [Core::Call] a prior call whose reserved metadata
     #   will be propagated by this one.
     # @param return_op [true|false] return an Operation if true
     # @param blk [Block] when provided, is executed for each response
     # @return [Enumerator|nil|Operation] as discussed above
-    def bidi_streamer(method, requests, marshal, unmarshal, timeout = nil,
+    def bidi_streamer(method, requests, marshal, unmarshal,
+                      deadline: nil,
+                      timeout: nil,
                       return_op: false,
                       parent: nil,
                       **kw,
                       &blk)
-      c = new_active_call(method, marshal, unmarshal, timeout, parent: parent)
+      c = new_active_call(method, marshal, unmarshal,
+                          deadline: deadline,
+                          timeout: timeout,
+                          parent: parent)
       kw_with_jwt_uri = self.class.update_with_jwt_aud_uri(kw, @host, method)
       md = @update_metadata.nil? ? kw : @update_metadata.call(kw_with_jwt_uri)
       return c.bidi_streamer(requests, **md, &blk) unless return_op
@@ -438,8 +462,13 @@
     # @param parent [Grpc::Call] a parent call, available when calls are
     #   made from server
     # @param timeout [TimeConst]
-    def new_active_call(method, marshal, unmarshal, timeout = nil, parent: nil)
-      deadline = from_relative_time(timeout.nil? ? @timeout : timeout)
+    def new_active_call(method, marshal, unmarshal,
+                        deadline: nil,
+                        timeout: nil,
+                        parent: nil)
+      if deadline.nil?
+        deadline = from_relative_time(timeout.nil? ? @timeout : timeout)
+      end
       call = @ch.create_call(@queue,
                              parent, # parent call
                              @propagate_mask, # propagation options
diff --git a/src/ruby/lib/grpc/generic/service.rb b/src/ruby/lib/grpc/generic/service.rb
index 3b9743e..80ff669 100644
--- a/src/ruby/lib/grpc/generic/service.rb
+++ b/src/ruby/lib/grpc/generic/service.rb
@@ -174,26 +174,24 @@
             unmarshal = desc.unmarshal_proc(:output)
             route = "/#{route_prefix}/#{name}"
             if desc.request_response?
-              define_method(mth_name) do |req, deadline = nil, **kw|
+              define_method(mth_name) do |req, **kw|
                 GRPC.logger.debug("calling #{@host}:#{route}")
-                request_response(route, req, marshal, unmarshal, deadline, **kw)
+                request_response(route, req, marshal, unmarshal, **kw)
               end
             elsif desc.client_streamer?
-              define_method(mth_name) do |reqs, deadline = nil, **kw|
+              define_method(mth_name) do |reqs, **kw|
                 GRPC.logger.debug("calling #{@host}:#{route}")
-                client_streamer(route, reqs, marshal, unmarshal, deadline, **kw)
+                client_streamer(route, reqs, marshal, unmarshal, **kw)
               end
             elsif desc.server_streamer?
-              define_method(mth_name) do |req, deadline = nil, **kw, &blk|
+              define_method(mth_name) do |req, **kw, &blk|
                 GRPC.logger.debug("calling #{@host}:#{route}")
-                server_streamer(route, req, marshal, unmarshal, deadline, **kw,
-                                &blk)
+                server_streamer(route, req, marshal, unmarshal, **kw, &blk)
               end
             else  # is a bidi_stream
-              define_method(mth_name) do |reqs, deadline = nil, **kw, &blk|
+              define_method(mth_name) do |reqs, **kw, &blk|
                 GRPC.logger.debug("calling #{@host}:#{route}")
-                bidi_streamer(route, reqs, marshal, unmarshal, deadline, **kw,
-                              &blk)
+                bidi_streamer(route, reqs, marshal, unmarshal, **kw, &blk)
               end
             end
           end
diff --git a/src/ruby/spec/generic/active_call_spec.rb b/src/ruby/spec/generic/active_call_spec.rb
index 0bf65ba..26208b7 100644
--- a/src/ruby/spec/generic/active_call_spec.rb
+++ b/src/ruby/spec/generic/active_call_spec.rb
@@ -57,7 +57,7 @@
   describe 'restricted view methods' do
     before(:each) do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       @client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                     @pass_through, deadline,
                                     metadata_tag: md_tag)
@@ -87,7 +87,7 @@
   describe '#remote_send' do
     it 'allows a client to send a payload to the server' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       @client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                     @pass_through, deadline,
                                     metadata_tag: md_tag)
@@ -111,7 +111,7 @@
 
     it 'marshals the payload using the marshal func' do
       call = make_test_call
-      ActiveCall.client_invoke(call, @client_queue, deadline)
+      ActiveCall.client_invoke(call, @client_queue)
       marshal = proc { |x| 'marshalled:' + x }
       client_call = ActiveCall.new(call, @client_queue, marshal,
                                    @pass_through, deadline)
@@ -134,8 +134,7 @@
   describe '#client_invoke' do
     it 'sends keywords as metadata to the server when the are present' do
       call = make_test_call
-      ActiveCall.client_invoke(call, @client_queue, deadline,
-                               k1: 'v1', k2: 'v2')
+      ActiveCall.client_invoke(call, @client_queue, k1: 'v1', k2: 'v2')
       recvd_rpc =  @server.request_call(@server_queue, @server_tag, deadline)
       recvd_call = recvd_rpc.call
       expect(recvd_call).to_not be_nil
@@ -148,7 +147,7 @@
   describe '#remote_read' do
     it 'reads the response sent by a server' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    @pass_through, deadline,
                                    metadata_tag: md_tag)
@@ -161,7 +160,7 @@
 
     it 'saves no metadata when the server adds no metadata' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    @pass_through, deadline,
                                    metadata_tag: md_tag)
@@ -176,7 +175,7 @@
 
     it 'saves metadata add by the server' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    @pass_through, deadline,
                                    metadata_tag: md_tag)
@@ -192,7 +191,7 @@
 
     it 'get a nil msg before a status when an OK status is sent' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    @pass_through, deadline,
                                    metadata_tag: md_tag)
@@ -209,7 +208,7 @@
 
     it 'unmarshals the response using the unmarshal func' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       unmarshal = proc { |x| 'unmarshalled:' + x }
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    unmarshal, deadline,
@@ -234,7 +233,7 @@
 
     it 'the returns an enumerator that can read n responses' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    @pass_through, deadline,
                                    metadata_tag: md_tag)
@@ -252,7 +251,7 @@
 
     it 'the returns an enumerator that stops after an OK Status' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    @pass_through, deadline,
                                    metadata_tag: md_tag)
@@ -275,7 +274,7 @@
   describe '#writes_done' do
     it 'finishes ok if the server sends a status response' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    @pass_through, deadline,
                                    metadata_tag: md_tag)
@@ -291,7 +290,7 @@
 
     it 'finishes ok if the server sends an early status response' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    @pass_through, deadline,
                                    metadata_tag: md_tag)
@@ -307,7 +306,7 @@
 
     it 'finishes ok if writes_done is true' do
       call = make_test_call
-      md_tag = ActiveCall.client_invoke(call, @client_queue, deadline)
+      md_tag = ActiveCall.client_invoke(call, @client_queue)
       client_call = ActiveCall.new(call, @client_queue, @pass_through,
                                    @pass_through, deadline,
                                    metadata_tag: md_tag)
diff --git a/src/ruby/spec/generic/client_stub_spec.rb b/src/ruby/spec/generic/client_stub_spec.rb
index 68d4b11..edcc962 100644
--- a/src/ruby/spec/generic/client_stub_spec.rb
+++ b/src/ruby/spec/generic/client_stub_spec.rb
@@ -408,6 +408,26 @@
 
       it_behaves_like 'bidi streaming'
     end
+
+    describe 'without enough time to run' do
+      before(:each) do
+        @sent_msgs = Array.new(3) { |i| 'msg_' + (i + 1).to_s }
+        @replys = Array.new(3) { |i| 'reply_' + (i + 1).to_s }
+        server_port = create_test_server
+        @host = "localhost:#{server_port}"
+      end
+
+      it 'should fail with DeadlineExceeded', bidi: true do
+        @server.start
+        stub = GRPC::ClientStub.new(@host, @cq)
+        blk = proc do
+          e = stub.bidi_streamer(@method, @sent_msgs, noop, noop,
+                                 timeout: 0.001)
+          e.collect { |r| r }
+        end
+        expect(&blk).to raise_error GRPC::BadStatus, /Deadline Exceeded/
+      end
+    end
   end
 
   def run_server_streamer(expected_input, replys, status, **kw)
diff --git a/src/ruby/spec/generic/rpc_server_spec.rb b/src/ruby/spec/generic/rpc_server_spec.rb
index 0326f6e..1295fd7 100644
--- a/src/ruby/spec/generic/rpc_server_spec.rb
+++ b/src/ruby/spec/generic/rpc_server_spec.rb
@@ -396,8 +396,9 @@
         @srv.wait_till_running
         req = EchoMsg.new
         stub = SlowStub.new(@host, **client_opts)
-        deadline = service.delay + 1.0 # wait for long enough
-        expect(stub.an_rpc(req, deadline, k1: 'v1', k2: 'v2')).to be_a(EchoMsg)
+        timeout = service.delay + 1.0 # wait for long enough
+        resp = stub.an_rpc(req, timeout: timeout, k1: 'v1', k2: 'v2')
+        expect(resp).to be_a(EchoMsg)
         wanted_md = [{ 'k1' => 'v1', 'k2' => 'v2' }]
         check_md(wanted_md, service.received_md)
         @srv.stop
@@ -411,8 +412,8 @@
         @srv.wait_till_running
         req = EchoMsg.new
         stub = SlowStub.new(@host, **client_opts)
-        deadline = 0.1  # too short for SlowService to respond
-        blk = proc { stub.an_rpc(req, deadline, k1: 'v1', k2: 'v2') }
+        timeout = 0.1  # too short for SlowService to respond
+        blk = proc { stub.an_rpc(req, timeout: timeout, k1: 'v1', k2: 'v2') }
         expect(&blk).to raise_error GRPC::BadStatus
         wanted_md = []
         expect(service.received_md).to eq(wanted_md)
diff --git a/templates/Makefile.template b/templates/Makefile.template
index 6530ea5..1b898ef 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -436,6 +436,7 @@
 PROTOC_CHECK_VERSION_CMD = protoc --version | grep -q libprotoc.3
 DTRACE_CHECK_CMD = which dtrace > /dev/null
 SYSTEMTAP_HEADERS_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/systemtap.c $(LDFLAGS)
+ZOOKEEPER_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/zookeeper.c $(LDFLAGS) -lzookeeper_mt
 
 ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_PERFTOOLS ?= $(shell $(PERFTOOLS_CHECK_CMD) 2> /dev/null && echo true || echo false)
@@ -503,6 +504,8 @@
 CACHE_MK += HAS_SYSTEMTAP = true,
 endif
 
+HAS_ZOOKEEPER = $(shell $(ZOOKEEPER_CHECK_CMD) 2> /dev/null && echo true || echo false)
+
 # Note that for testing purposes, one can do:
 #   make HAS_EMBEDDED_OPENSSL_ALPN=false
 # to emulate the fact we do not have OpenSSL in the third_party folder.
@@ -621,6 +624,14 @@
 PC_LIB = -lgrpc
 GRPC_UNSECURE_PC_FILE := $(PC_TEMPLATE)
 
+# gprc_zookeeper .pc file
+PC_NAME = gRPC zookeeper
+PC_DESCRIPTION = gRPC's zookeeper plugin
+PC_CFLAGS =
+PC_REQUIRES_PRIVATE =
+PC_LIBS_PRIVATE = -lzookeeper_mt
+GRPC_ZOOKEEPER_PC_FILE := $(PC_TEMPLATE)
+
 PROTOBUF_PKG_CONFIG = false
 
 PC_REQUIRES_GRPCXX =
@@ -813,6 +824,7 @@
 	$(PERFTOOLS_CHECK_CMD) || true
 	$(PROTOBUF_CHECK_CMD) || true
 	$(PROTOC_CHECK_VERSION_CMD) || true
+	$(ZOOKEEPER_CHECK_CMD) || true
 
 $(LIBDIR)/$(CONFIG)/zlib/libz.a:
 	$(E) "[MAKE]    Building zlib"
@@ -871,12 +883,13 @@
 
 static: static_c static_cxx
 
-static_c: pc_c pc_c_unsecure cache.mk \
+static_c: pc_c pc_c_unsecure cache.mk pc_gpr pc_c_zookeeper\
 % for lib in libs:
-% if lib.build == 'all' and lib.language == 'c':
+% if lib.build == 'all' and lib.language == 'c' and not lib.get('external_deps', None):
  $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
 % endif
 % endfor
+ static_zookeeper_libs
 
 
 static_cxx: pc_cxx pc_cxx_unsecure pc_gpr cache.mk \
@@ -889,13 +902,13 @@
 
 shared: shared_c shared_cxx
 
-shared_c: pc_c pc_c_unsecure pc_gpr  cache.mk\
+shared_c: pc_c pc_c_unsecure pc_gpr cache.mk pc_c_zookeeper\
 % for lib in libs:
-% if lib.build == 'all' and lib.language == 'c':
+% if lib.build == 'all' and lib.language == 'c' and not lib.get('external_deps', None):
  $(LIBDIR)/$(CONFIG)/lib${lib.name}.$(SHARED_EXT)\
 % endif
 % endfor
-
+ shared_zookeeper_libs
 
 shared_cxx: pc_cxx pc_cxx_unsecure cache.mk\
 % for lib in libs:
@@ -912,6 +925,29 @@
 % endif
 % endfor
 
+ifeq ($(HAS_ZOOKEEPER),true)
+static_zookeeper_libs:\
+% for lib in libs:
+% if lib.build == 'all' and lib.language == 'c' and 'zookeeper' in lib.get('external_deps', []):
+ $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
+% endif
+% endfor
+
+shared_zookeeper_libs:\
+% for lib in libs:
+% if lib.build == 'all' and lib.language == 'c' and 'zookeeper' in lib.get('external_deps', []):
+ $(LIBDIR)/$(CONFIG)/lib${lib.name}.$(SHARED_EXT)\
+% endif
+% endfor
+
+else
+
+static_zookeeper_libs:
+
+shared_zookeeper_libs:
+
+endif
+
 grpc_csharp_ext: shared_csharp
 
 plugins: $(PROTOC_PLUGINS)
@@ -920,7 +956,7 @@
 
 privatelibs_c: \
 % for lib in libs:
-% if lib.build == 'private' and lib.language == 'c':
+% if lib.build == 'private' and lib.language == 'c' and not lib.get('external_deps', None):
  $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
 % endif
 % endfor
@@ -931,43 +967,75 @@
 
 pc_c_unsecure: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_unsecure.pc
 
+ifeq ($(HAS_ZOOKEEPER),true)
+pc_c_zookeeper: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_zookeeper.pc
+else
+pc_c_zookeeper:
+endif
+
 pc_cxx: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++.pc
 
 pc_cxx_unsecure: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++_unsecure.pc
 
 privatelibs_cxx: \
 % for lib in libs:
-% if lib.build == 'private' and lib.language == 'c++':
+% if lib.build == 'private' and lib.language == 'c++' and not lib.get('external_deps', None):
  $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
 % endif
 % endfor
 
 
-buildtests: buildtests_c buildtests_cxx
+ifeq ($(HAS_ZOOKEEPER),true)
+privatelibs_zookeeper: \
+% for lib in libs:
+% if lib.build == 'private' and lib.language == 'c++' and zookeeper in lib.get('external_deps', []):
+ $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
+% endif
+% endfor
+
+else
+privatelibs_zookeeper:
+endif
+
+
+buildtests: buildtests_c buildtests_cxx buildtests_zookeeper
 
 buildtests_c: privatelibs_c\
 % for tgt in targets:
-% if tgt.build == 'test' and not tgt.language == 'c++':
+% if tgt.build == 'test' and not tgt.language == 'c++' and not tgt.get('external_deps', None):
  $(BINDIR)/$(CONFIG)/${tgt.name}\
 % endif
 % endfor
 
 
-buildtests_cxx: privatelibs_cxx\
+buildtests_cxx: buildtests_zookeeper privatelibs_cxx\
 % for tgt in targets:
-% if tgt.build == 'test' and tgt.language == 'c++':
+% if tgt.build == 'test' and tgt.language == 'c++' and not tgt.get('external_deps', None):
  $(BINDIR)/$(CONFIG)/${tgt.name}\
 % endif
 % endfor
 
 
-test: test_c test_cxx
+ifeq ($(HAS_ZOOKEEPER),true)
+buildtests_zookeeper: privatelibs_zookeeper\
+% for tgt in targets:
+% if tgt.build == 'test' and tgt.language == 'c++' and 'zookeeper' in tgt.get('external_deps', []):
+ $(BINDIR)/$(CONFIG)/${tgt.name}\
+% endif
+% endfor
 
-flaky_test: flaky_test_c flaky_test_cxx
+else
+buildtests_zookeeper:
+endif
+
+
+test: test_c test_cxx test_zookeeper
+
+flaky_test: flaky_test_c flaky_test_cxx flaky_test_zookeeper
 
 test_c: buildtests_c
 % for tgt in targets:
-% if tgt.build == 'test' and tgt.get('run', True) and not tgt.language == 'c++' and not tgt.get('flaky', False):
+% if tgt.build == 'test' and tgt.get('run', True) and not tgt.language == 'c++' and not tgt.get('flaky', False) and not tgt.get('external_deps', None):
 	$(E) "[RUN]     Testing ${tgt.name}"
 	$(Q) $(BINDIR)/$(CONFIG)/${tgt.name} || ( echo test ${tgt.name} failed ; exit 1 )
 % endif
@@ -976,16 +1044,16 @@
 
 flaky_test_c: buildtests_c
 % for tgt in targets:
-% if tgt.build == 'test' and tgt.get('run', True) and not tgt.language == 'c++' and tgt.get('flaky', False):
+% if tgt.build == 'test' and tgt.get('run', True) and not tgt.language == 'c++' and tgt.get('flaky', False) and not tgt.get('external_deps', None):
 	$(E) "[RUN]     Testing ${tgt.name}"
 	$(Q) $(BINDIR)/$(CONFIG)/${tgt.name} || ( echo test ${tgt.name} failed ; exit 1 )
 % endif
 % endfor
 
 
-test_cxx: buildtests_cxx
+test_cxx: test_zookeeper buildtests_cxx
 % for tgt in targets:
-% if tgt.build == 'test' and tgt.get('run', True) and tgt.language == 'c++' and not tgt.get('flaky', False):
+% if tgt.build == 'test' and tgt.get('run', True) and tgt.language == 'c++' and not tgt.get('flaky', False) and not tgt.get('external_deps', None):
 	$(E) "[RUN]     Testing ${tgt.name}"
 	$(Q) $(BINDIR)/$(CONFIG)/${tgt.name} || ( echo test ${tgt.name} failed ; exit 1 )
 % endif
@@ -994,13 +1062,37 @@
 
 flaky_test_cxx: buildtests_cxx
 % for tgt in targets:
-% if tgt.build == 'test' and tgt.get('run', True) and tgt.language == 'c++' and tgt.get('flaky', False):
+% if tgt.build == 'test' and tgt.get('run', True) and tgt.language == 'c++' and tgt.get('flaky', False) and not tgt.get('external_deps', None):
 	$(E) "[RUN]     Testing ${tgt.name}"
 	$(Q) $(BINDIR)/$(CONFIG)/${tgt.name} || ( echo test ${tgt.name} failed ; exit 1 )
 % endif
 % endfor
 
 
+ifeq ($(HAS_ZOOKEEPER),true)
+test_zookeeper: buildtests_zookeeper
+% for tgt in targets:
+% if tgt.build == 'test' and tgt.get('run', True) and tgt.language == 'c++' and not tgt.get('flaky', False) and 'zookeeper' in tgt.get('external_deps', []):
+	$(E) "[RUN]     Testing ${tgt.name}"
+	$(Q) $(BINDIR)/$(CONFIG)/${tgt.name} || ( echo test ${tgt.name} failed ; exit 1 )
+% endif
+% endfor
+
+
+flaky_test_zookeeper: buildtests_zookeeper
+% for tgt in targets:
+% if tgt.build == 'test' and tgt.get('run', True) and tgt.language == 'c++' and tgt.get('flaky', False) and 'zookeeper' in tgt.get('external_deps', []):
+	$(E) "[RUN]     Testing ${tgt.name}"
+	$(Q) $(BINDIR)/$(CONFIG)/${tgt.name} || ( echo test ${tgt.name} failed ; exit 1 )
+% endif
+% endfor
+
+else
+test_zookeeper:
+flaky_test_zookeeper:
+endif
+
+
 test_python: static_c
 	$(E) "[RUN]     Testing python code"
 	$(Q) tools/run_tests/run_tests.py -lpython -c$(CONFIG)
@@ -1051,11 +1143,25 @@
 % for lib in libs:
 % if lib.language == "c":
 % if lib.build == "all":
+% if not lib.get('external_deps', None):
 	$(E) "[STRIP]   Stripping lib${lib.name}.a"
 	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/lib${lib.name}.a
 % endif
 % endif
+% endif
 % endfor
+ifeq ($(HAS_ZOOKEEPER),true)
+% for lib in libs:
+% if lib.language == "c":
+% if lib.build == "all":
+% if 'zookeeper' in lib.get('external_deps', []):
+	$(E) "[STRIP]   Stripping lib${lib.name}.a"
+	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/lib${lib.name}.a
+% endif
+% endif
+% endif
+% endfor
+endif
 endif
 
 strip-static_cxx: static_cxx
@@ -1075,11 +1181,25 @@
 % for lib in libs:
 % if lib.language == "c":
 % if lib.build == "all":
+% if not lib.get('external_deps', None):
 	$(E) "[STRIP]   Stripping lib${lib.name}.so"
 	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/lib${lib.name}.$(SHARED_EXT)
 % endif
 % endif
+% endif
 % endfor
+ifeq ($(HAS_ZOOKEEPER),true)
+% for lib in libs:
+% if lib.language == "c":
+% if lib.build == "all":
+% if 'zookeeper' in lib.get('external_deps', []):
+	$(E) "[STRIP]   Stripping lib${lib.name}.so"
+	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/lib${lib.name}.$(SHARED_EXT)
+% endif
+% endif
+% endif
+% endfor
+endif
 endif
 
 strip-shared_cxx: shared_cxx
@@ -1125,6 +1245,11 @@
 	$(Q) mkdir -p $(@D)
 	$(Q) echo "$(GRPC_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
+$(LIBDIR)/$(CONFIG)/pkgconfig/grpc_zookeeper.pc:
+	$(E) "[MAKE]    Generating $@"
+	$(Q) mkdir -p $(@D)
+	$(Q) echo -e "$(GRPC_ZOOKEEPER_PC_FILE)" >$@
+
 $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++.pc:
 	$(E) "[MAKE]    Generating $@"
 	$(Q) mkdir -p $(@D)
@@ -1213,12 +1338,27 @@
 % for lib in libs:
 % if lib.language == "c":
 % if lib.build == "all":
+% if not lib.get('external_deps', None):
 	$(E) "[INSTALL] Installing lib${lib.name}.a"
 	$(Q) $(INSTALL) -d $(prefix)/lib
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/lib${lib.name}.a $(prefix)/lib/lib${lib.name}.a
 % endif
 % endif
+% endif
 % endfor
+ifeq ($(HAS_ZOOKEEPER),true)
+% for lib in libs:
+% if lib.language == "c":
+% if lib.build == "all":
+% if 'zookeeper' in lib.get('external_deps', []):
+	$(E) "[INSTALL] Installing lib${lib.name}.a"
+	$(Q) $(INSTALL) -d $(prefix)/lib
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/lib${lib.name}.a $(prefix)/lib/lib${lib.name}.a
+% endif
+% endif
+% endif
+% endfor
+endif
 
 install-static_cxx: static_cxx strip-static_cxx install-pkg-config_cxx
 % for lib in libs:
@@ -1235,6 +1375,7 @@
 % for lib in libs:
 % if lib.language == lang_filter:
 % if lib.build == "all":
+% if not lib.get('external_deps', None):
 ifeq ($(SYSTEM),MINGW32)
 	$(E) "[INSTALL] Installing ${lib.name}.$(SHARED_EXT)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
@@ -1251,7 +1392,32 @@
 endif
 % endif
 % endif
+% endif
 % endfor
+ifeq ($(HAS_ZOOKEEPER),true)
+% for lib in libs:
+% if lib.language == lang_filter:
+% if lib.build == "all":
+% if 'zookeeper' in lib.get('external_deps', []):
+ifeq ($(SYSTEM),MINGW32)
+	$(E) "[INSTALL] Installing ${lib.name}.$(SHARED_EXT)"
+	$(Q) $(INSTALL) -d $(prefix)/lib
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/${lib.name}.$(SHARED_EXT) $(prefix)/lib/${lib.name}.$(SHARED_EXT)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/lib${lib.name}-imp.a $(prefix)/lib/lib${lib.name}-imp.a
+else
+	$(E) "[INSTALL] Installing lib${lib.name}.$(SHARED_EXT)"
+	$(Q) $(INSTALL) -d $(prefix)/lib
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/lib${lib.name}.$(SHARED_EXT) $(prefix)/lib/lib${lib.name}.$(SHARED_EXT)
+ifneq ($(SYSTEM),Darwin)
+	$(Q) ln -sf lib${lib.name}.$(SHARED_EXT) $(prefix)/lib/lib${lib.name}.so.${settings.version.major}
+	$(Q) ln -sf lib${lib.name}.$(SHARED_EXT) $(prefix)/lib/lib${lib.name}.so
+endif
+endif
+% endif
+% endif
+% endif
+% endfor
+endif
 ifneq ($(SYSTEM),MINGW32)
 ifneq ($(SYSTEM),Darwin)
 	$(Q) ldconfig || true
@@ -1281,12 +1447,15 @@
 % endfor
 endif
 
-install-pkg-config_c: pc_gpr pc_c pc_c_unsecure
+install-pkg-config_c: pc_gpr pc_c pc_c_unsecure pc_c_zookeeper
 	$(E) "[INSTALL] Installing C pkg-config files"
 	$(Q) $(INSTALL) -d $(prefix)/lib/pkgconfig
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/pkgconfig/gpr.pc $(prefix)/lib/pkgconfig/gpr.pc
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/pkgconfig/grpc.pc $(prefix)/lib/pkgconfig/grpc.pc
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_unsecure.pc $(prefix)/lib/pkgconfig/grpc_unsecure.pc
+ifeq ($(HAS_ZOOKEEPER),true)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_zookeeper.pc $(prefix)/lib/pkgconfig/grpc_zookeeper.pc
+endif
 
 install-pkg-config_cxx: pc_cxx pc_cxx_unsecure
 	$(E) "[INSTALL] Installing C++ pkg-config files"
@@ -1480,6 +1649,9 @@
     for src in lib.src:
       sources_that_don_t_need_openssl.add(src)
 
+  if 'zookeeper' in lib.get('external_deps', []):
+    libs = libs + ' -lzookeeper_mt'
+
   if lib.get('secure', 'check') == 'yes' or lib.get('secure', 'check') == 'check':
     lib_deps = lib_deps + ' $(OPENSSL_DEP)'
     mingw_lib_deps = mingw_lib_deps + ' $(OPENSSL_DEP)'
@@ -1619,6 +1791,9 @@
 % for dep in tgt.deps:
  $(LIBDIR)/$(CONFIG)/lib${dep}.a\
 % endfor
+% if 'zookeeper' in tgt.get('external_deps', []):
+ -lzookeeper_mt\
+% endif
 % if tgt.language == "c++":
 % if tgt.build == 'protoc':
  $(HOST_LDLIBSXX) $(HOST_LDLIBS_PROTOC)\
diff --git a/test/build/zookeeper.c b/test/build/zookeeper.c
new file mode 100644
index 0000000..7cd3d0d
--- /dev/null
+++ b/test/build/zookeeper.c
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/* This is just a compilation test, to see if we have Zookeeper C client
+   library installed. */
+
+#include <stdlib.h>
+#include <zookeeper/zookeeper.h>
+
+int main() {
+  zookeeper_init(NULL, NULL, 0, 0, 0, 0);
+  return 0;
+}
diff --git a/test/cpp/end2end/zookeeper_test.cc b/test/cpp/end2end/zookeeper_test.cc
new file mode 100644
index 0000000..a48c497
--- /dev/null
+++ b/test/cpp/end2end/zookeeper_test.cc
@@ -0,0 +1,223 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/util/test_config.h"
+#include "test/core/util/port.h"
+#include "test/cpp/util/echo.grpc.pb.h"
+#include "src/core/support/env.h"
+#include <grpc++/channel_arguments.h>
+#include <grpc++/channel_interface.h>
+#include <grpc++/client_context.h>
+#include <grpc++/create_channel.h>
+#include <grpc++/credentials.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include <grpc++/server_context.h>
+#include <grpc++/server_credentials.h>
+#include <grpc++/status.h>
+#include <gtest/gtest.h>
+#include <grpc/grpc.h>
+#include <grpc/grpc_zookeeper.h>
+#include <zookeeper/zookeeper.h>
+
+using grpc::cpp::test::util::EchoRequest;
+using grpc::cpp::test::util::EchoResponse;
+
+namespace grpc {
+namespace testing {
+
+class ZookeeperTestServiceImpl
+    : public ::grpc::cpp::test::util::TestService::Service {
+ public:
+  Status Echo(ServerContext* context, const EchoRequest* request,
+              EchoResponse* response) GRPC_OVERRIDE {
+    response->set_message(request->message());
+    return Status::OK;
+  }
+};
+
+class ZookeeperTest : public ::testing::Test {
+ protected:
+  ZookeeperTest() {}
+
+  void SetUp() GRPC_OVERRIDE {
+    SetUpZookeeper();
+
+    // Sets up two servers
+    int port1 = grpc_pick_unused_port_or_die();
+    server1_ = SetUpServer(port1);
+
+    int port2 = grpc_pick_unused_port_or_die();
+    server2_ = SetUpServer(port2);
+
+    // Registers service /test in zookeeper
+    RegisterService("/test", "test");
+
+    // Registers service instance /test/1 in zookeeper
+    string value =
+        "{\"host\":\"localhost\",\"port\":\"" + to_string(port1) + "\"}";
+    RegisterService("/test/1", value);
+
+    // Registers service instance /test/2 in zookeeper
+    value =
+        "{\"host\":\"localhost\",\"port\":\"" + to_string(port2) + "\"}";
+    RegisterService("/test/2", value);
+  }
+
+  // Requires zookeeper server running
+  void SetUpZookeeper() {
+    // Finds zookeeper server address in environment
+    // Default is localhost:2181
+    zookeeper_address_ = "localhost:2181";
+    char* addr = gpr_getenv("GRPC_ZOOKEEPER_SERVER_TEST");
+    if (addr != NULL) {
+      string addr_str(addr);
+      zookeeper_address_ = addr_str;
+      gpr_free(addr);
+    }
+    gpr_log(GPR_DEBUG, zookeeper_address_.c_str());
+
+    // Connects to zookeeper server
+    zoo_set_debug_level(ZOO_LOG_LEVEL_WARN);
+    zookeeper_handle_ =
+        zookeeper_init(zookeeper_address_.c_str(), NULL, 15000, 0, 0, 0);
+    GPR_ASSERT(zookeeper_handle_ != NULL);
+
+    // Registers zookeeper name resolver in grpc
+    grpc_zookeeper_register();
+  }
+
+  std::unique_ptr<Server> SetUpServer(const int port) {
+    string server_address = "localhost:" + to_string(port);
+
+    ServerBuilder builder;
+    builder.AddListeningPort(server_address, InsecureServerCredentials());
+    builder.RegisterService(&service_);
+    std::unique_ptr<Server> server = builder.BuildAndStart();
+    return server;
+  }
+
+  void RegisterService(const string& name, const string& value) {
+    char* path = (char*)gpr_malloc(name.size());
+
+    int status = zoo_exists(zookeeper_handle_, name.c_str(), 0, NULL);
+    if (status == ZNONODE) {
+      status =
+          zoo_create(zookeeper_handle_, name.c_str(), value.c_str(),
+                     value.size(), &ZOO_OPEN_ACL_UNSAFE, 0, path, name.size());
+    } else {
+      status = zoo_set(zookeeper_handle_, name.c_str(), value.c_str(),
+                       value.size(), -1);
+    }
+    gpr_free(path);
+    GPR_ASSERT(status == 0);
+  }
+
+  void DeleteService(const string& name) {
+    int status = zoo_delete(zookeeper_handle_, name.c_str(), -1);
+    GPR_ASSERT(status == 0);
+  }
+
+  void ChangeZookeeperState() {
+    server1_->Shutdown();
+    DeleteService("/test/1");
+  }
+
+  void TearDown() GRPC_OVERRIDE {
+    server1_->Shutdown();
+    server2_->Shutdown();
+    zookeeper_close(zookeeper_handle_);
+  }
+
+  void ResetStub() {
+    string target = "zookeeper://" + zookeeper_address_ + "/test";
+    channel_ = CreateChannel(target, InsecureCredentials(), ChannelArguments());
+    stub_ = std::move(grpc::cpp::test::util::TestService::NewStub(channel_));
+  }
+
+  string to_string(const int number) {
+    std::stringstream strs;
+    strs << number;
+    return strs.str();
+  }
+
+  std::shared_ptr<ChannelInterface> channel_;
+  std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub_;
+  std::unique_ptr<Server> server1_;
+  std::unique_ptr<Server> server2_;
+  ZookeeperTestServiceImpl service_;
+  zhandle_t* zookeeper_handle_;
+  string zookeeper_address_;
+};
+
+// Tests zookeeper state change between two RPCs
+// TODO(ctiller): leaked objects in this test
+TEST_F(ZookeeperTest, ZookeeperStateChangeTwoRpc) {
+  ResetStub();
+
+  // First RPC
+  EchoRequest request1;
+  EchoResponse response1;
+  ClientContext context1;
+  context1.set_authority("test");
+  request1.set_message("Hello");
+  Status s1 = stub_->Echo(&context1, request1, &response1);
+  EXPECT_EQ(response1.message(), request1.message());
+  EXPECT_TRUE(s1.ok());
+
+  // Zookeeper state changes
+  gpr_log(GPR_DEBUG, "Zookeeper state change"); 
+  ChangeZookeeperState();
+  // Waits for re-resolving addresses
+  // TODO(ctiller): RPC will probably fail if not waiting
+  sleep(1);
+
+  // Second RPC
+  EchoRequest request2;
+  EchoResponse response2;
+  ClientContext context2;
+  context2.set_authority("test");
+  request2.set_message("World");
+  Status s2 = stub_->Echo(&context2, request2, &response2);
+  EXPECT_EQ(response2.message(), request2.message());
+  EXPECT_TRUE(s2.ok());
+}
+
+}  // namespace testing
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/tools/jenkins/grpc_jenkins_slave/Dockerfile b/tools/jenkins/grpc_jenkins_slave/Dockerfile
index 9058b04..2f6f0f5 100644
--- a/tools/jenkins/grpc_jenkins_slave/Dockerfile
+++ b/tools/jenkins/grpc_jenkins_slave/Dockerfile
@@ -146,6 +146,14 @@
 RUN apt-get update && apt-get install -y \
     git php5 php5-dev phpunit unzip
 
+##################
+# Zookeeper dependencies
+
+# Install dependencies
+
+RUN apt-get install -y libzookeeper-mt-dev
+
+
 RUN mkdir /var/local/jenkins
 
 # Define the default command.
diff --git a/tools/jenkins/grpc_jenkins_slave_32bits/Dockerfile b/tools/jenkins/grpc_jenkins_slave_32bits/Dockerfile
index 2beaf9a..d6457d3 100644
--- a/tools/jenkins/grpc_jenkins_slave_32bits/Dockerfile
+++ b/tools/jenkins/grpc_jenkins_slave_32bits/Dockerfile
@@ -146,6 +146,14 @@
 RUN apt-get update && apt-get install -y \
     git php5 php5-dev phpunit unzip
 
+##################
+# Zookeeper dependencies
+
+# Install dependencies
+
+RUN apt-get install -y libzookeeper-mt-dev
+
+
 RUN mkdir /var/local/jenkins
 
 # Define the default command.
diff --git a/tools/jenkins/run_jenkins.sh b/tools/jenkins/run_jenkins.sh
index 93cf82d..1ef7bb1 100755
--- a/tools/jenkins/run_jenkins.sh
+++ b/tools/jenkins/run_jenkins.sh
@@ -79,6 +79,7 @@
     -e "config=$config" \
     -e "language=$language" \
     -e "arch=$arch" \
+    -e "GRPC_ZOOKEEPER_SERVER_TEST=grpc-jenkins-master:2181" \
     -e CCACHE_DIR=/tmp/ccache \
     -i \
     -v "$git_root:/var/local/jenkins/grpc" \
diff --git a/tools/run_tests/jobset.py b/tools/run_tests/jobset.py
index aa3f4bf..538deac 100755
--- a/tools/run_tests/jobset.py
+++ b/tools/run_tests/jobset.py
@@ -131,7 +131,7 @@
   """Specifies what to run for a job."""
 
   def __init__(self, cmdline, shortname=None, environ=None, hash_targets=None,
-               cwd=None, shell=False, timeout_seconds=900):
+               cwd=None, shell=False, timeout_seconds=5*60):
     """
     Arguments:
       cmdline: a list of arguments to pass as the command line
diff --git a/tools/run_tests/run_interops.py b/tools/run_tests/run_interops.py
index 4e6b5ce..e1d40d3 100755
--- a/tools/run_tests/run_interops.py
+++ b/tools/run_tests/run_interops.py
@@ -15,7 +15,10 @@
 jobs = []
 jobNumber = 0
 for test in _TESTS:
-  test_job = jobset.JobSpec(cmdline=['tools/run_tests/run_interops_test.sh', '%s' % args.language, '%s' % test], shortname=test)
+  test_job = jobset.JobSpec(
+        cmdline=['tools/run_tests/run_interops_test.sh', '%s' % args.language, '%s' % test], 
+        shortname=test,
+        timeout_seconds=15*60)
   jobs.append(test_job)
   jobNumber+=1
 
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index 47d2b61..1a6752c 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -470,7 +470,8 @@
                            '-j', '%d' % (multiprocessing.cpu_count() + 1),
                            'EXTRA_DEFINES=GRPC_TEST_SLOWDOWN_MACHINE_FACTOR=%f' %
                                args.slowdown,
-                           'CONFIG=%s' % cfg] + targets)
+                           'CONFIG=%s' % cfg] + targets,
+                          timeout_seconds=30*60)
 
 build_steps = [make_jobspec(cfg,
                             list(set(itertools.chain.from_iterable(
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 983b8c6..627e6ac 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -1673,6 +1673,23 @@
   }, 
   {
     "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc++", 
+      "grpc++_test_util", 
+      "grpc_test_util", 
+      "grpc_zookeeper"
+    ], 
+    "headers": [], 
+    "language": "c++", 
+    "name": "zookeeper_test", 
+    "src": [
+      "test/cpp/end2end/zookeeper_test.cc"
+    ]
+  }, 
+  {
+    "deps": [
       "end2end_certs", 
       "end2end_fixture_chttp2_fake_security", 
       "end2end_test_bad_hostname", 
@@ -13033,6 +13050,23 @@
   {
     "deps": [
       "gpr", 
+      "grpc"
+    ], 
+    "headers": [
+      "include/grpc/grpc_zookeeper.h", 
+      "src/core/client_config/resolvers/zookeeper_resolver.h"
+    ], 
+    "language": "c", 
+    "name": "grpc_zookeeper", 
+    "src": [
+      "include/grpc/grpc_zookeeper.h", 
+      "src/core/client_config/resolvers/zookeeper_resolver.c", 
+      "src/core/client_config/resolvers/zookeeper_resolver.h"
+    ]
+  }, 
+  {
+    "deps": [
+      "gpr", 
       "gpr_test_util", 
       "grpc", 
       "grpc_test_util"
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index da393d7..6b3183d 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -1475,6 +1475,23 @@
   {
     "ci_platforms": [
       "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "zookeeper_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ]
+  }, 
+  {
+    "ci_platforms": [
+      "linux", 
       "posix", 
       "windows"
     ], 
diff --git a/vsprojects/Grpc.mak b/vsprojects/Grpc.mak
index 7c2f72e..96b3a79 100644
--- a/vsprojects/Grpc.mak
+++ b/vsprojects/Grpc.mak
@@ -77,13 +77,13 @@
 $(OUT_DIR):
 	mkdir $(OUT_DIR)
 
-build_libs: build_gpr build_gpr_test_util build_grpc build_grpc_test_util build_grpc_test_util_unsecure build_grpc_unsecure Debug\reconnect_server.lib build_grpc++ Debug\grpc++_test_config.lib Debug\grpc++_test_util.lib build_grpc++_unsecure Debug\interop_client_helper.lib Debug\interop_client_main.lib Debug\interop_server_helper.lib Debug\interop_server_main.lib Debug\qps.lib Debug\end2end_fixture_chttp2_fake_security.lib Debug\end2end_fixture_chttp2_fullstack.lib Debug\end2end_fixture_chttp2_fullstack_compression.lib Debug\end2end_fixture_chttp2_fullstack_with_proxy.lib Debug\end2end_fixture_chttp2_simple_ssl_fullstack.lib Debug\end2end_fixture_chttp2_simple_ssl_fullstack_with_proxy.lib Debug\end2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.lib Debug\end2end_fixture_chttp2_socket_pair.lib Debug\end2end_fixture_chttp2_socket_pair_one_byte_at_a_time.lib Debug\end2end_fixture_chttp2_socket_pair_with_grpc_trace.lib Debug\end2end_test_bad_hostname.lib Debug\end2end_test_cancel_after_accept.lib Debug\end2end_test_cancel_after_accept_and_writes_closed.lib Debug\end2end_test_cancel_after_invoke.lib Debug\end2end_test_cancel_before_invoke.lib Debug\end2end_test_cancel_in_a_vacuum.lib Debug\end2end_test_census_simple_request.lib Debug\end2end_test_channel_connectivity.lib Debug\end2end_test_default_host.lib Debug\end2end_test_disappearing_server.lib Debug\end2end_test_early_server_shutdown_finishes_inflight_calls.lib Debug\end2end_test_early_server_shutdown_finishes_tags.lib Debug\end2end_test_empty_batch.lib Debug\end2end_test_graceful_server_shutdown.lib Debug\end2end_test_invoke_large_request.lib Debug\end2end_test_max_concurrent_streams.lib Debug\end2end_test_max_message_length.lib Debug\end2end_test_no_op.lib Debug\end2end_test_ping_pong_streaming.lib Debug\end2end_test_registered_call.lib Debug\end2end_test_request_response_with_binary_metadata_and_payload.lib Debug\end2end_test_request_response_with_metadata_and_payload.lib Debug\end2end_test_request_response_with_payload.lib Debug\end2end_test_request_response_with_payload_and_call_creds.lib Debug\end2end_test_request_response_with_trailing_metadata_and_payload.lib Debug\end2end_test_request_with_compressed_payload.lib Debug\end2end_test_request_with_flags.lib Debug\end2end_test_request_with_large_metadata.lib Debug\end2end_test_request_with_payload.lib Debug\end2end_test_server_finishes_request.lib Debug\end2end_test_simple_delayed_request.lib Debug\end2end_test_simple_request.lib Debug\end2end_test_simple_request_with_high_initial_sequence_number.lib Debug\end2end_certs.lib Debug\bad_client_test.lib 
+build_libs: build_gpr build_gpr_test_util build_grpc build_grpc_test_util build_grpc_test_util_unsecure build_grpc_unsecure Debug\grpc_zookeeper.lib Debug\reconnect_server.lib build_grpc++ Debug\grpc++_test_config.lib Debug\grpc++_test_util.lib build_grpc++_unsecure Debug\interop_client_helper.lib Debug\interop_client_main.lib Debug\interop_server_helper.lib Debug\interop_server_main.lib Debug\qps.lib Debug\end2end_fixture_chttp2_fake_security.lib Debug\end2end_fixture_chttp2_fullstack.lib Debug\end2end_fixture_chttp2_fullstack_compression.lib Debug\end2end_fixture_chttp2_fullstack_with_proxy.lib Debug\end2end_fixture_chttp2_simple_ssl_fullstack.lib Debug\end2end_fixture_chttp2_simple_ssl_fullstack_with_proxy.lib Debug\end2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.lib Debug\end2end_fixture_chttp2_socket_pair.lib Debug\end2end_fixture_chttp2_socket_pair_one_byte_at_a_time.lib Debug\end2end_fixture_chttp2_socket_pair_with_grpc_trace.lib Debug\end2end_test_bad_hostname.lib Debug\end2end_test_cancel_after_accept.lib Debug\end2end_test_cancel_after_accept_and_writes_closed.lib Debug\end2end_test_cancel_after_invoke.lib Debug\end2end_test_cancel_before_invoke.lib Debug\end2end_test_cancel_in_a_vacuum.lib Debug\end2end_test_census_simple_request.lib Debug\end2end_test_channel_connectivity.lib Debug\end2end_test_default_host.lib Debug\end2end_test_disappearing_server.lib Debug\end2end_test_early_server_shutdown_finishes_inflight_calls.lib Debug\end2end_test_early_server_shutdown_finishes_tags.lib Debug\end2end_test_empty_batch.lib Debug\end2end_test_graceful_server_shutdown.lib Debug\end2end_test_invoke_large_request.lib Debug\end2end_test_max_concurrent_streams.lib Debug\end2end_test_max_message_length.lib Debug\end2end_test_no_op.lib Debug\end2end_test_ping_pong_streaming.lib Debug\end2end_test_registered_call.lib Debug\end2end_test_request_response_with_binary_metadata_and_payload.lib Debug\end2end_test_request_response_with_metadata_and_payload.lib Debug\end2end_test_request_response_with_payload.lib Debug\end2end_test_request_response_with_payload_and_call_creds.lib Debug\end2end_test_request_response_with_trailing_metadata_and_payload.lib Debug\end2end_test_request_with_compressed_payload.lib Debug\end2end_test_request_with_flags.lib Debug\end2end_test_request_with_large_metadata.lib Debug\end2end_test_request_with_payload.lib Debug\end2end_test_server_finishes_request.lib Debug\end2end_test_simple_delayed_request.lib Debug\end2end_test_simple_request.lib Debug\end2end_test_simple_request_with_high_initial_sequence_number.lib Debug\end2end_certs.lib Debug\bad_client_test.lib 
 buildtests: buildtests_c buildtests_cxx
 
 buildtests_c: alarm_heap_test.exe alarm_list_test.exe alarm_test.exe alpn_test.exe bin_encoder_test.exe chttp2_status_conversion_test.exe chttp2_stream_encoder_test.exe chttp2_stream_map_test.exe fling_client.exe fling_server.exe gpr_cmdline_test.exe gpr_env_test.exe gpr_file_test.exe gpr_histogram_test.exe gpr_host_port_test.exe gpr_log_test.exe gpr_slice_buffer_test.exe gpr_slice_test.exe gpr_stack_lockfree_test.exe gpr_string_test.exe gpr_sync_test.exe gpr_thd_test.exe gpr_time_test.exe gpr_tls_test.exe gpr_useful_test.exe grpc_auth_context_test.exe grpc_base64_test.exe grpc_byte_buffer_reader_test.exe grpc_channel_stack_test.exe grpc_completion_queue_test.exe grpc_credentials_test.exe grpc_json_token_test.exe grpc_jwt_verifier_test.exe grpc_security_connector_test.exe grpc_stream_op_test.exe hpack_parser_test.exe hpack_table_test.exe httpcli_format_request_test.exe httpcli_parser_test.exe json_rewrite.exe json_rewrite_test.exe json_test.exe lame_client_test.exe message_compress_test.exe multi_init_test.exe multiple_server_queues_test.exe murmur_hash_test.exe no_server_test.exe resolve_address_test.exe secure_endpoint_test.exe sockaddr_utils_test.exe time_averaged_stats_test.exe timeout_encoding_test.exe timers_test.exe transport_metadata_test.exe transport_security_test.exe uri_parser_test.exe chttp2_fake_security_bad_hostname_test.exe chttp2_fake_security_cancel_after_accept_test.exe chttp2_fake_security_cancel_after_accept_and_writes_closed_test.exe chttp2_fake_security_cancel_after_invoke_test.exe chttp2_fake_security_cancel_before_invoke_test.exe chttp2_fake_security_cancel_in_a_vacuum_test.exe chttp2_fake_security_census_simple_request_test.exe chttp2_fake_security_channel_connectivity_test.exe chttp2_fake_security_default_host_test.exe chttp2_fake_security_disappearing_server_test.exe chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fake_security_early_server_shutdown_finishes_tags_test.exe chttp2_fake_security_empty_batch_test.exe chttp2_fake_security_graceful_server_shutdown_test.exe chttp2_fake_security_invoke_large_request_test.exe chttp2_fake_security_max_concurrent_streams_test.exe chttp2_fake_security_max_message_length_test.exe chttp2_fake_security_no_op_test.exe chttp2_fake_security_ping_pong_streaming_test.exe chttp2_fake_security_registered_call_test.exe chttp2_fake_security_request_response_with_binary_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_payload_test.exe chttp2_fake_security_request_response_with_payload_and_call_creds_test.exe chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fake_security_request_with_compressed_payload_test.exe chttp2_fake_security_request_with_flags_test.exe chttp2_fake_security_request_with_large_metadata_test.exe chttp2_fake_security_request_with_payload_test.exe chttp2_fake_security_server_finishes_request_test.exe chttp2_fake_security_simple_delayed_request_test.exe chttp2_fake_security_simple_request_test.exe chttp2_fake_security_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_test.exe chttp2_fullstack_cancel_after_accept_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_fullstack_cancel_after_invoke_test.exe chttp2_fullstack_cancel_before_invoke_test.exe chttp2_fullstack_cancel_in_a_vacuum_test.exe chttp2_fullstack_census_simple_request_test.exe chttp2_fullstack_channel_connectivity_test.exe chttp2_fullstack_default_host_test.exe chttp2_fullstack_disappearing_server_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_fullstack_empty_batch_test.exe chttp2_fullstack_graceful_server_shutdown_test.exe chttp2_fullstack_invoke_large_request_test.exe chttp2_fullstack_max_concurrent_streams_test.exe chttp2_fullstack_max_message_length_test.exe chttp2_fullstack_no_op_test.exe chttp2_fullstack_ping_pong_streaming_test.exe chttp2_fullstack_registered_call_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_payload_test.exe chttp2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fullstack_request_with_compressed_payload_test.exe chttp2_fullstack_request_with_flags_test.exe chttp2_fullstack_request_with_large_metadata_test.exe chttp2_fullstack_request_with_payload_test.exe chttp2_fullstack_server_finishes_request_test.exe chttp2_fullstack_simple_delayed_request_test.exe chttp2_fullstack_simple_request_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_compression_bad_hostname_test.exe chttp2_fullstack_compression_cancel_after_accept_test.exe chttp2_fullstack_compression_cancel_after_accept_and_writes_closed_test.exe chttp2_fullstack_compression_cancel_after_invoke_test.exe chttp2_fullstack_compression_cancel_before_invoke_test.exe chttp2_fullstack_compression_cancel_in_a_vacuum_test.exe chttp2_fullstack_compression_census_simple_request_test.exe chttp2_fullstack_compression_channel_connectivity_test.exe chttp2_fullstack_compression_default_host_test.exe chttp2_fullstack_compression_disappearing_server_test.exe chttp2_fullstack_compression_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fullstack_compression_early_server_shutdown_finishes_tags_test.exe chttp2_fullstack_compression_empty_batch_test.exe chttp2_fullstack_compression_graceful_server_shutdown_test.exe chttp2_fullstack_compression_invoke_large_request_test.exe chttp2_fullstack_compression_max_concurrent_streams_test.exe chttp2_fullstack_compression_max_message_length_test.exe chttp2_fullstack_compression_no_op_test.exe chttp2_fullstack_compression_ping_pong_streaming_test.exe chttp2_fullstack_compression_registered_call_test.exe chttp2_fullstack_compression_request_response_with_binary_metadata_and_payload_test.exe chttp2_fullstack_compression_request_response_with_metadata_and_payload_test.exe chttp2_fullstack_compression_request_response_with_payload_test.exe chttp2_fullstack_compression_request_response_with_payload_and_call_creds_test.exe chttp2_fullstack_compression_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fullstack_compression_request_with_compressed_payload_test.exe chttp2_fullstack_compression_request_with_flags_test.exe chttp2_fullstack_compression_request_with_large_metadata_test.exe chttp2_fullstack_compression_request_with_payload_test.exe chttp2_fullstack_compression_server_finishes_request_test.exe chttp2_fullstack_compression_simple_delayed_request_test.exe chttp2_fullstack_compression_simple_request_test.exe chttp2_fullstack_compression_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_with_proxy_bad_hostname_test.exe chttp2_fullstack_with_proxy_cancel_after_accept_test.exe chttp2_fullstack_with_proxy_cancel_after_accept_and_writes_closed_test.exe chttp2_fullstack_with_proxy_cancel_after_invoke_test.exe chttp2_fullstack_with_proxy_cancel_before_invoke_test.exe chttp2_fullstack_with_proxy_cancel_in_a_vacuum_test.exe chttp2_fullstack_with_proxy_census_simple_request_test.exe chttp2_fullstack_with_proxy_default_host_test.exe chttp2_fullstack_with_proxy_disappearing_server_test.exe chttp2_fullstack_with_proxy_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fullstack_with_proxy_early_server_shutdown_finishes_tags_test.exe chttp2_fullstack_with_proxy_empty_batch_test.exe chttp2_fullstack_with_proxy_graceful_server_shutdown_test.exe chttp2_fullstack_with_proxy_invoke_large_request_test.exe chttp2_fullstack_with_proxy_max_message_length_test.exe chttp2_fullstack_with_proxy_no_op_test.exe chttp2_fullstack_with_proxy_ping_pong_streaming_test.exe chttp2_fullstack_with_proxy_registered_call_test.exe chttp2_fullstack_with_proxy_request_response_with_binary_metadata_and_payload_test.exe chttp2_fullstack_with_proxy_request_response_with_metadata_and_payload_test.exe chttp2_fullstack_with_proxy_request_response_with_payload_test.exe chttp2_fullstack_with_proxy_request_response_with_payload_and_call_creds_test.exe chttp2_fullstack_with_proxy_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fullstack_with_proxy_request_with_large_metadata_test.exe chttp2_fullstack_with_proxy_request_with_payload_test.exe chttp2_fullstack_with_proxy_server_finishes_request_test.exe chttp2_fullstack_with_proxy_simple_delayed_request_test.exe chttp2_fullstack_with_proxy_simple_request_test.exe chttp2_fullstack_with_proxy_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_fullstack_bad_hostname_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_fullstack_census_simple_request_test.exe chttp2_simple_ssl_fullstack_channel_connectivity_test.exe chttp2_simple_ssl_fullstack_default_host_test.exe chttp2_simple_ssl_fullstack_disappearing_server_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_fullstack_empty_batch_test.exe chttp2_simple_ssl_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_fullstack_max_message_length_test.exe chttp2_simple_ssl_fullstack_no_op_test.exe chttp2_simple_ssl_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_fullstack_registered_call_test.exe chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_with_compressed_payload_test.exe chttp2_simple_ssl_fullstack_request_with_flags_test.exe chttp2_simple_ssl_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_fullstack_request_with_payload_test.exe chttp2_simple_ssl_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_fullstack_simple_request_test.exe chttp2_simple_ssl_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_fullstack_with_proxy_bad_hostname_test.exe chttp2_simple_ssl_fullstack_with_proxy_cancel_after_accept_test.exe chttp2_simple_ssl_fullstack_with_proxy_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_fullstack_with_proxy_cancel_after_invoke_test.exe chttp2_simple_ssl_fullstack_with_proxy_cancel_before_invoke_test.exe chttp2_simple_ssl_fullstack_with_proxy_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_fullstack_with_proxy_census_simple_request_test.exe chttp2_simple_ssl_fullstack_with_proxy_default_host_test.exe chttp2_simple_ssl_fullstack_with_proxy_disappearing_server_test.exe chttp2_simple_ssl_fullstack_with_proxy_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_fullstack_with_proxy_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_fullstack_with_proxy_empty_batch_test.exe chttp2_simple_ssl_fullstack_with_proxy_graceful_server_shutdown_test.exe chttp2_simple_ssl_fullstack_with_proxy_invoke_large_request_test.exe chttp2_simple_ssl_fullstack_with_proxy_max_message_length_test.exe chttp2_simple_ssl_fullstack_with_proxy_no_op_test.exe chttp2_simple_ssl_fullstack_with_proxy_ping_pong_streaming_test.exe chttp2_simple_ssl_fullstack_with_proxy_registered_call_test.exe chttp2_simple_ssl_fullstack_with_proxy_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_with_proxy_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_with_proxy_request_response_with_payload_test.exe chttp2_simple_ssl_fullstack_with_proxy_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_fullstack_with_proxy_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_with_proxy_request_with_large_metadata_test.exe chttp2_simple_ssl_fullstack_with_proxy_request_with_payload_test.exe chttp2_simple_ssl_fullstack_with_proxy_server_finishes_request_test.exe chttp2_simple_ssl_fullstack_with_proxy_simple_delayed_request_test.exe chttp2_simple_ssl_fullstack_with_proxy_simple_request_test.exe chttp2_simple_ssl_fullstack_with_proxy_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_with_oauth2_fullstack_bad_hostname_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_channel_connectivity_test.exe chttp2_simple_ssl_with_oauth2_fullstack_default_host_test.exe chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test.exe chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_message_length_test.exe chttp2_simple_ssl_with_oauth2_fullstack_no_op_test.exe chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_with_oauth2_fullstack_registered_call_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_compressed_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_flags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_bad_hostname_test.exe chttp2_socket_pair_cancel_after_accept_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_cancel_after_invoke_test.exe chttp2_socket_pair_cancel_before_invoke_test.exe chttp2_socket_pair_cancel_in_a_vacuum_test.exe chttp2_socket_pair_census_simple_request_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_empty_batch_test.exe chttp2_socket_pair_graceful_server_shutdown_test.exe chttp2_socket_pair_invoke_large_request_test.exe chttp2_socket_pair_max_concurrent_streams_test.exe chttp2_socket_pair_max_message_length_test.exe chttp2_socket_pair_no_op_test.exe chttp2_socket_pair_ping_pong_streaming_test.exe chttp2_socket_pair_registered_call_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_payload_test.exe chttp2_socket_pair_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_request_with_compressed_payload_test.exe chttp2_socket_pair_request_with_flags_test.exe chttp2_socket_pair_request_with_large_metadata_test.exe chttp2_socket_pair_request_with_payload_test.exe chttp2_socket_pair_server_finishes_request_test.exe chttp2_socket_pair_simple_request_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_compressed_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_test.exe chttp2_socket_pair_with_grpc_trace_no_op_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_with_compressed_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_unsecure_test.exe chttp2_fullstack_cancel_after_accept_unsecure_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_fullstack_cancel_after_invoke_unsecure_test.exe chttp2_fullstack_cancel_before_invoke_unsecure_test.exe chttp2_fullstack_cancel_in_a_vacuum_unsecure_test.exe chttp2_fullstack_census_simple_request_unsecure_test.exe chttp2_fullstack_channel_connectivity_unsecure_test.exe chttp2_fullstack_default_host_unsecure_test.exe chttp2_fullstack_disappearing_server_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_fullstack_empty_batch_unsecure_test.exe chttp2_fullstack_graceful_server_shutdown_unsecure_test.exe chttp2_fullstack_invoke_large_request_unsecure_test.exe chttp2_fullstack_max_concurrent_streams_unsecure_test.exe chttp2_fullstack_max_message_length_unsecure_test.exe chttp2_fullstack_no_op_unsecure_test.exe chttp2_fullstack_ping_pong_streaming_unsecure_test.exe chttp2_fullstack_registered_call_unsecure_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_payload_unsecure_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_with_compressed_payload_unsecure_test.exe chttp2_fullstack_request_with_flags_unsecure_test.exe chttp2_fullstack_request_with_large_metadata_unsecure_test.exe chttp2_fullstack_request_with_payload_unsecure_test.exe chttp2_fullstack_server_finishes_request_unsecure_test.exe chttp2_fullstack_simple_delayed_request_unsecure_test.exe chttp2_fullstack_simple_request_unsecure_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_fullstack_compression_bad_hostname_unsecure_test.exe chttp2_fullstack_compression_cancel_after_accept_unsecure_test.exe chttp2_fullstack_compression_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_fullstack_compression_cancel_after_invoke_unsecure_test.exe chttp2_fullstack_compression_cancel_before_invoke_unsecure_test.exe chttp2_fullstack_compression_cancel_in_a_vacuum_unsecure_test.exe chttp2_fullstack_compression_census_simple_request_unsecure_test.exe chttp2_fullstack_compression_channel_connectivity_unsecure_test.exe chttp2_fullstack_compression_default_host_unsecure_test.exe chttp2_fullstack_compression_disappearing_server_unsecure_test.exe chttp2_fullstack_compression_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_fullstack_compression_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_fullstack_compression_empty_batch_unsecure_test.exe chttp2_fullstack_compression_graceful_server_shutdown_unsecure_test.exe chttp2_fullstack_compression_invoke_large_request_unsecure_test.exe chttp2_fullstack_compression_max_concurrent_streams_unsecure_test.exe chttp2_fullstack_compression_max_message_length_unsecure_test.exe chttp2_fullstack_compression_no_op_unsecure_test.exe chttp2_fullstack_compression_ping_pong_streaming_unsecure_test.exe chttp2_fullstack_compression_registered_call_unsecure_test.exe chttp2_fullstack_compression_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_fullstack_compression_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_fullstack_compression_request_response_with_payload_unsecure_test.exe chttp2_fullstack_compression_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_fullstack_compression_request_with_compressed_payload_unsecure_test.exe chttp2_fullstack_compression_request_with_flags_unsecure_test.exe chttp2_fullstack_compression_request_with_large_metadata_unsecure_test.exe chttp2_fullstack_compression_request_with_payload_unsecure_test.exe chttp2_fullstack_compression_server_finishes_request_unsecure_test.exe chttp2_fullstack_compression_simple_delayed_request_unsecure_test.exe chttp2_fullstack_compression_simple_request_unsecure_test.exe chttp2_fullstack_compression_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_fullstack_with_proxy_bad_hostname_unsecure_test.exe chttp2_fullstack_with_proxy_cancel_after_accept_unsecure_test.exe chttp2_fullstack_with_proxy_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_fullstack_with_proxy_cancel_after_invoke_unsecure_test.exe chttp2_fullstack_with_proxy_cancel_before_invoke_unsecure_test.exe chttp2_fullstack_with_proxy_cancel_in_a_vacuum_unsecure_test.exe chttp2_fullstack_with_proxy_census_simple_request_unsecure_test.exe chttp2_fullstack_with_proxy_default_host_unsecure_test.exe chttp2_fullstack_with_proxy_disappearing_server_unsecure_test.exe chttp2_fullstack_with_proxy_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_fullstack_with_proxy_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_fullstack_with_proxy_empty_batch_unsecure_test.exe chttp2_fullstack_with_proxy_graceful_server_shutdown_unsecure_test.exe chttp2_fullstack_with_proxy_invoke_large_request_unsecure_test.exe chttp2_fullstack_with_proxy_max_message_length_unsecure_test.exe chttp2_fullstack_with_proxy_no_op_unsecure_test.exe chttp2_fullstack_with_proxy_ping_pong_streaming_unsecure_test.exe chttp2_fullstack_with_proxy_registered_call_unsecure_test.exe chttp2_fullstack_with_proxy_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_fullstack_with_proxy_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_fullstack_with_proxy_request_response_with_payload_unsecure_test.exe chttp2_fullstack_with_proxy_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_fullstack_with_proxy_request_with_large_metadata_unsecure_test.exe chttp2_fullstack_with_proxy_request_with_payload_unsecure_test.exe chttp2_fullstack_with_proxy_server_finishes_request_unsecure_test.exe chttp2_fullstack_with_proxy_simple_delayed_request_unsecure_test.exe chttp2_fullstack_with_proxy_simple_request_unsecure_test.exe chttp2_fullstack_with_proxy_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_bad_hostname_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_census_simple_request_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_empty_batch_unsecure_test.exe chttp2_socket_pair_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_invoke_large_request_unsecure_test.exe chttp2_socket_pair_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_max_message_length_unsecure_test.exe chttp2_socket_pair_no_op_unsecure_test.exe chttp2_socket_pair_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_registered_call_unsecure_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_with_compressed_payload_unsecure_test.exe chttp2_socket_pair_request_with_flags_unsecure_test.exe chttp2_socket_pair_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_request_with_payload_unsecure_test.exe chttp2_socket_pair_server_finishes_request_unsecure_test.exe chttp2_socket_pair_simple_request_unsecure_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_compressed_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_no_op_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_compressed_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test.exe connection_prefix_bad_client_test.exe initial_settings_frame_bad_client_test.exe 
 	echo All C tests built.
 
-buildtests_cxx: async_end2end_test.exe auth_property_iterator_test.exe channel_arguments_test.exe cli_call_test.exe client_crash_test_server.exe credentials_test.exe cxx_byte_buffer_test.exe cxx_slice_test.exe cxx_time_test.exe dynamic_thread_pool_test.exe end2end_test.exe fixed_size_thread_pool_test.exe generic_end2end_test.exe grpc_cli.exe mock_test.exe reconnect_interop_client.exe reconnect_interop_server.exe secure_auth_context_test.exe server_crash_test_client.exe status_test.exe thread_stress_test.exe 
+buildtests_cxx: async_end2end_test.exe auth_property_iterator_test.exe channel_arguments_test.exe cli_call_test.exe client_crash_test_server.exe credentials_test.exe cxx_byte_buffer_test.exe cxx_slice_test.exe cxx_time_test.exe dynamic_thread_pool_test.exe end2end_test.exe fixed_size_thread_pool_test.exe generic_end2end_test.exe grpc_cli.exe mock_test.exe reconnect_interop_client.exe reconnect_interop_server.exe secure_auth_context_test.exe server_crash_test_client.exe status_test.exe thread_stress_test.exe zookeeper_test.exe 
 	echo All C++ tests built.
 
 
@@ -775,6 +775,14 @@
 	echo Running thread_stress_test
 	$(OUT_DIR)\thread_stress_test.exe
 
+zookeeper_test.exe: Debug\grpc++_test_util.lib build_grpc_test_util build_grpc++ Debug\grpc_zookeeper.lib build_grpc build_gpr_test_util build_gpr $(OUT_DIR)
+	echo Building zookeeper_test
+    $(CC) $(CXXFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\test\cpp\end2end\zookeeper_test.cc 
+	$(LINK) $(LFLAGS) /OUT:"$(OUT_DIR)\zookeeper_test.exe" Debug\grpc++_test_util.lib Debug\grpc_test_util.lib Debug\grpc++.lib Debug\grpc_zookeeper.lib Debug\grpc.lib Debug\gpr_test_util.lib Debug\gpr.lib $(CXX_LIBS) $(LIBS) $(OUT_DIR)\zookeeper_test.obj 
+zookeeper_test: zookeeper_test.exe
+	echo Running zookeeper_test
+	$(OUT_DIR)\zookeeper_test.exe
+
 chttp2_fake_security_bad_hostname_test.exe: Debug\end2end_fixture_chttp2_fake_security.lib Debug\end2end_test_bad_hostname.lib Debug\end2end_certs.lib build_grpc_test_util build_grpc build_gpr_test_util build_gpr $(OUT_DIR)
 	echo Building chttp2_fake_security_bad_hostname_test
 	$(CC) $(CFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\vsprojects\dummy.c 
@@ -4697,6 +4705,14 @@
 build_grpc_unsecure:
 	msbuild grpc.sln /t:grpc_unsecure /p:Configuration=Debug /p:Linkage-grpc_dependencies_zlib=static
 
+grpc_zookeeper.exe: build_gpr build_grpc $(OUT_DIR)
+	echo Building grpc_zookeeper
+	$(CC) $(CFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\src\core\client_config\resolvers\zookeeper_resolver.c 
+	$(LINK) $(LFLAGS) /OUT:"$(OUT_DIR)\grpc_zookeeper.exe" Debug\gpr.lib Debug\grpc.lib $(LIBS) $(OUT_DIR)\zookeeper_resolver.obj 
+grpc_zookeeper: grpc_zookeeper.exe
+	echo Running grpc_zookeeper
+	$(OUT_DIR)\grpc_zookeeper.exe
+
 Debug\reconnect_server.lib: $(OUT_DIR)
 	echo Building reconnect_server
 	$(CC) $(CFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\test\core\util\reconnect_server.c 
diff --git a/vsprojects/grpc.sln b/vsprojects/grpc.sln
index 42ddef4..0a9b5c2 100644
--- a/vsprojects/grpc.sln
+++ b/vsprojects/grpc.sln
@@ -52,6 +52,15 @@
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_zookeeper", "grpc_zookeeper\grpc_zookeeper.vcxproj", "{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}"
+	ProjectSection(myProperties) = preProject
+        	lib = "True"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc++", "grpc++\grpc++.vcxproj", "{C187A093-A0FE-489D-A40A-6E33DE0F9FEB}"
 	ProjectSection(myProperties) = preProject
         	lib = "True"
@@ -178,6 +187,22 @@
 		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}.Release-DLL|Win32.Build.0 = Release-DLL|Win32
 		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}.Release-DLL|x64.ActiveCfg = Release-DLL|x64
 		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}.Release-DLL|x64.Build.0 = Release-DLL|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug|Win32.ActiveCfg = Debug|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug|x64.ActiveCfg = Debug|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release|Win32.ActiveCfg = Release|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release|x64.ActiveCfg = Release|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug|Win32.Build.0 = Debug|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug|x64.Build.0 = Debug|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release|Win32.Build.0 = Release|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release|x64.Build.0 = Release|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug-DLL|x64.Build.0 = Debug|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release-DLL|Win32.Build.0 = Release|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release-DLL|x64.ActiveCfg = Release|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release-DLL|x64.Build.0 = Release|x64
 		{C187A093-A0FE-489D-A40A-6E33DE0F9FEB}.Debug|Win32.ActiveCfg = Debug|Win32
 		{C187A093-A0FE-489D-A40A-6E33DE0F9FEB}.Debug|x64.ActiveCfg = Debug|x64
 		{C187A093-A0FE-489D-A40A-6E33DE0F9FEB}.Release|Win32.ActiveCfg = Release|Win32
diff --git a/vsprojects/grpc_csharp_ext.sln b/vsprojects/grpc_csharp_ext.sln
index df84f3d..aa41d87 100644
--- a/vsprojects/grpc_csharp_ext.sln
+++ b/vsprojects/grpc_csharp_ext.sln
@@ -24,6 +24,15 @@
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_zookeeper", "grpc_zookeeper\grpc_zookeeper.vcxproj", "{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}"
+	ProjectSection(myProperties) = preProject
+        	lib = "True"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_csharp_ext", "grpc_csharp_ext\grpc_csharp_ext.vcxproj", "{D64C6D63-4458-4A88-AB38-35678384A7E4}"
 	ProjectSection(myProperties) = preProject
         	lib = "True"
@@ -65,6 +74,14 @@
 		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}.Release|Win32.Build.0 = Release-DLL|Win32
 		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}.Release|x64.ActiveCfg = Release-DLL|x64
 		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}.Release|x64.Build.0 = Release-DLL|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug|Win32.ActiveCfg = Debug|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug|Win32.Build.0 = Debug|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug|x64.ActiveCfg = Debug|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Debug|x64.Build.0 = Debug|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release|Win32.ActiveCfg = Release|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release|Win32.Build.0 = Release|Win32
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release|x64.ActiveCfg = Release|x64
+		{F14EBEC1-DC43-45D3-8A7D-1A47072EFE50}.Release|x64.Build.0 = Release|x64
 		{D64C6D63-4458-4A88-AB38-35678384A7E4}.Debug|Win32.ActiveCfg = Debug|Win32
 		{D64C6D63-4458-4A88-AB38-35678384A7E4}.Debug|Win32.Build.0 = Debug|Win32
 		{D64C6D63-4458-4A88-AB38-35678384A7E4}.Debug|x64.ActiveCfg = Debug|x64