Merge github.com:grpc/grpc into we-dont-need-no-backup

.travis.yml

@@ -32,7 +32,7 @@ script:
   - if [ ! -z "$USE_GCC" ] ; then export CC=gcc-$USE_GCC ; export CXX=g++-$USE_GCC ; fi
   - ./tools/run_tests/run_tests.py -l $TEST -t -j 16 -c $CONFIG -s 4.0
 after_success:
-  - if [ "$CONFIG" = "gcov" ] ; then coveralls --exclude third_party --exclude gens -b. --gcov-options '\-p' ; fi
+  - if [ "$CONFIG" = "gcov" ] ; then coveralls --exclude third_party --exclude gens --exclude test --exclude src/compiler -b. --gcov-options '\-p' ; fi
 notifications:
   email: false
   webhooks:

BUILD

@@ -358,7 +358,6 @@ cc_library(
     "include/grpc/byte_buffer.h",
     "include/grpc/byte_buffer_reader.h",
     "include/grpc/grpc.h",
-    "include/grpc/grpc_http.h",
     "include/grpc/status.h",
   ],
   includes = [
@@ -569,7 +568,6 @@ cc_library(
     "include/grpc/byte_buffer.h",
     "include/grpc/byte_buffer_reader.h",
     "include/grpc/grpc.h",
-    "include/grpc/grpc_http.h",
     "include/grpc/status.h",
   ],
   includes = [

README.md

@@ -1,4 +1,5 @@
 [![Build Status](https://travis-ci.org/grpc/grpc.svg?branch=master)](https://travis-ci.org/grpc/grpc)
+[![Coverage Status](https://img.shields.io/coveralls/grpc/grpc.svg)](https://coveralls.io/r/grpc/grpc?branch=master)
 
 [gRPC - An RPC library and framework](http://github.com/grpc/grpc)
 ===================================
@@ -37,7 +38,7 @@ Libraries in different languages are in different state of development. We are s
    * C++ Library: [src/cpp] (src/cpp) : Early adopter ready - Alpha.
    * Ruby Library: [src/ruby] (src/ruby) : Early adopter ready - Alpha.
    * NodeJS Library: [src/node] (src/node) : Early adopter ready - Alpha.
-   * Python Library: [src/python] (src/python) : Usable with limitations - Alpha.
+   * Python Library: [src/python] (src/python) : Early adopter ready - Alpha.
    * PHP Library: [src/php] (src/php) : Pre-Alpha.
    * C# Library: [src/csharp] (src/csharp) : Pre-Alpha.
    * Objective-C Library: [src/objective-c] (src/objective-c): Pre-Alpha.

build.json

@@ -6,7 +6,7 @@
     "#": "The public version number of the library.",
     "version": {
       "major": 0,
-      "minor": 8,
+      "minor": 9,
       "micro": 0,
       "build": 0
     }
@@ -88,7 +88,6 @@
         "include/grpc/byte_buffer.h",
         "include/grpc/byte_buffer_reader.h",
         "include/grpc/grpc.h",
-        "include/grpc/grpc_http.h",
         "include/grpc/status.h"
       ],
       "headers": [
@@ -547,7 +546,8 @@
         "test/cpp/util/echo.proto",
         "test/cpp/util/echo_duplicate.proto",
         "test/cpp/util/cli_call.cc",
-        "test/cpp/util/create_test_channel.cc"
+        "test/cpp/util/create_test_channel.cc",
+        "test/cpp/util/fake_credentials.cc"
       ]
     },
     {

examples/pubsub/main.cc

@@ -71,7 +71,7 @@ int main(int argc, char** argv) {
 
   ss << FLAGS_server_host << ":" << FLAGS_server_port;
 
-  std::unique_ptr<grpc::Credentials> creds = grpc::GoogleDefaultCredentials();
+  std::shared_ptr<grpc::Credentials> creds = grpc::GoogleDefaultCredentials();
   std::shared_ptr<grpc::ChannelInterface> channel =
       grpc::CreateChannel(ss.str(), creds, grpc::ChannelArguments());
 

gRPC.podspec

@@ -5,7 +5,7 @@ Pod::Spec.new do |s|
   s.homepage = 'https://www.grpc.io'
   s.license  = 'New BSD'
   s.authors  = { 'Jorge Canizales' => 'jcanizales@google.com',
-                 'Michael Lumish' => 'mlumish@google.com' }
+                 'Michael Lumish'  => 'mlumish@google.com' }
 
   # s.source = { :git => 'https://github.com/grpc/grpc.git',  :tag => 'release-0_5_0' }
 
@@ -67,7 +67,8 @@ Pod::Spec.new do |s|
 
   s.subspec 'GRPCClient' do |gs|
     gs.summary = 'Objective-C wrapper around the core gRPC library.'
-    gs.authors  = { 'Jorge Canizales' => 'jcanizales@google.com' }
+    gs.authors  = { 'Jorge Canizales' => 'jcanizales@google.com',
+                    'Michael Lumish'  => 'mlumish@google.com' }
 
     gs.source_files = 'src/objective-c/GRPCClient/*.{h,m}',
                       'src/objective-c/GRPCClient/private/*.{h,m}'
@@ -90,5 +91,6 @@ Pod::Spec.new do |s|
 
     ps.dependency 'gRPC/GRPCClient'
     ps.dependency 'gRPC/RxLibrary'
+    ps.dependency 'Protobuf', '~> 3.0'
   end
 end

include/grpc++/client_context.h

@@ -51,6 +51,7 @@ namespace grpc {
 class CallOpBuffer;
 class ChannelInterface;
 class CompletionQueue;
+class Credentials;
 class RpcMethod;
 class Status;
 template <class R>
@@ -102,6 +103,11 @@ class ClientContext {
 
   void set_authority(const grpc::string& authority) { authority_ = authority; }
 
+  // Set credentials for the rpc.
+  void set_credentials(const std::shared_ptr<Credentials>& creds) {
+    creds_ = creds;
+  }
+
   void TryCancel();
 
  private:
@@ -127,11 +133,8 @@ class ClientContext {
   friend class ::grpc::ClientAsyncResponseReader;
 
   grpc_call* call() { return call_; }
-  void set_call(grpc_call* call, const std::shared_ptr<ChannelInterface>& channel) {
-    GPR_ASSERT(call_ == nullptr);
-    call_ = call;
-    channel_ = channel;
-  }
+  void set_call(grpc_call* call,
+                const std::shared_ptr<ChannelInterface>& channel);
 
   grpc_completion_queue* cq() { return cq_; }
   void set_cq(grpc_completion_queue* cq) { cq_ = cq; }
@@ -144,6 +147,7 @@ class ClientContext {
   grpc_completion_queue* cq_;
   gpr_timespec deadline_;
   grpc::string authority_;
+  std::shared_ptr<Credentials> creds_;
   std::multimap<grpc::string, grpc::string> send_initial_metadata_;
   std::multimap<grpc::string, grpc::string> recv_initial_metadata_;
   std::multimap<grpc::string, grpc::string> trailing_metadata_;

include/grpc++/create_channel.h

@@ -45,7 +45,7 @@ class ChannelInterface;
 
 // If creds does not hold an object or is invalid, a lame channel is returned.
 std::shared_ptr<ChannelInterface> CreateChannel(
-    const grpc::string& target, const std::unique_ptr<Credentials>& creds,
+    const grpc::string& target, const std::shared_ptr<Credentials>& creds,
     const ChannelArguments& args);
 
 }  // namespace grpc

include/grpc++/credentials.h

@@ -47,17 +47,18 @@ class SecureCredentials;
 class Credentials : public GrpcLibrary {
  public:
   ~Credentials() GRPC_OVERRIDE;
+  virtual bool ApplyToCall(grpc_call* call) = 0;
 
  protected:
-  friend std::unique_ptr<Credentials> CompositeCredentials(
-      const std::unique_ptr<Credentials>& creds1,
-      const std::unique_ptr<Credentials>& creds2);
+  friend std::shared_ptr<Credentials> CompositeCredentials(
+      const std::shared_ptr<Credentials>& creds1,
+      const std::shared_ptr<Credentials>& creds2);
 
   virtual SecureCredentials* AsSecureCredentials() = 0;
 
  private:
   friend std::shared_ptr<ChannelInterface> CreateChannel(
-      const grpc::string& target, const std::unique_ptr<Credentials>& creds,
+      const grpc::string& target, const std::shared_ptr<Credentials>& creds,
       const ChannelArguments& args);
 
   virtual std::shared_ptr<ChannelInterface> CreateChannel(
@@ -80,20 +81,20 @@ struct SslCredentialsOptions {
 };
 
 // Factories for building different types of Credentials
-// The functions may return empty unique_ptr when credentials cannot be created.
+// The functions may return empty shared_ptr when credentials cannot be created.
 // If a Credentials pointer is returned, it can still be invalid when used to
 // create a channel. A lame channel will be created then and all rpcs will
 // fail on it.
 
 // Builds credentials with reasonable defaults.
-std::unique_ptr<Credentials> GoogleDefaultCredentials();
+std::shared_ptr<Credentials> GoogleDefaultCredentials();
 
 // Builds SSL Credentials given SSL specific options
-std::unique_ptr<Credentials> SslCredentials(
+std::shared_ptr<Credentials> SslCredentials(
     const SslCredentialsOptions& options);
 
 // Builds credentials for use when running in GCE
-std::unique_ptr<Credentials> ComputeEngineCredentials();
+std::shared_ptr<Credentials> ComputeEngineCredentials();
 
 // Builds service account credentials.
 // json_key is the JSON key string containing the client's private key.
@@ -101,7 +102,7 @@ std::unique_ptr<Credentials> ComputeEngineCredentials();
 // token_lifetime_seconds is the lifetime in seconds of each token acquired
 // through this service account credentials. It should be positive and should
 // not exceed grpc_max_auth_token_lifetime or will be cropped to this value.
-std::unique_ptr<Credentials> ServiceAccountCredentials(
+std::shared_ptr<Credentials> ServiceAccountCredentials(
     const grpc::string& json_key, const grpc::string& scope,
     long token_lifetime_seconds);
 
@@ -110,27 +111,27 @@ std::unique_ptr<Credentials> ServiceAccountCredentials(
 // token_lifetime_seconds is the lifetime in seconds of each Json Web Token
 // (JWT) created with this credentials. It should not exceed
 // grpc_max_auth_token_lifetime or will be cropped to this value.
-std::unique_ptr<Credentials> JWTCredentials(
-    const grpc::string& json_key, long token_lifetime_seconds);
+std::shared_ptr<Credentials> JWTCredentials(const grpc::string& json_key,
+                                            long token_lifetime_seconds);
 
 // Builds refresh token credentials.
 // json_refresh_token is the JSON string containing the refresh token along
 // with a client_id and client_secret.
-std::unique_ptr<Credentials> RefreshTokenCredentials(
+std::shared_ptr<Credentials> RefreshTokenCredentials(
     const grpc::string& json_refresh_token);
 
 // Builds IAM credentials.
-std::unique_ptr<Credentials> IAMCredentials(
+std::shared_ptr<Credentials> IAMCredentials(
     const grpc::string& authorization_token,
     const grpc::string& authority_selector);
 
 // Combines two credentials objects into a composite credentials
-std::unique_ptr<Credentials> CompositeCredentials(
-    const std::unique_ptr<Credentials>& creds1,
-    const std::unique_ptr<Credentials>& creds2);
+std::shared_ptr<Credentials> CompositeCredentials(
+    const std::shared_ptr<Credentials>& creds1,
+    const std::shared_ptr<Credentials>& creds2);
 
 // Credentials for an unencrypted, unauthenticated channel
-std::unique_ptr<Credentials> InsecureCredentials();
+std::shared_ptr<Credentials> InsecureCredentials();
 
 }  // namespace grpc
 

include/grpc/support/subprocess.h

@@ -37,7 +37,7 @@
 typedef struct gpr_subprocess gpr_subprocess;
 
 /* .exe on windows, empty on unices */
-char *gpr_subprocess_binary_extension();
+const char *gpr_subprocess_binary_extension();
 
 gpr_subprocess *gpr_subprocess_create(int argc, char **argv);
 /* if subprocess has not been joined, kill it */

src/core/channel/http_server_filter.c

@@ -34,7 +34,6 @@
 #include "src/core/channel/http_server_filter.h"
 
 #include <string.h>
-#include <grpc/grpc_http.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 

src/core/iomgr/tcp_posix.c

@@ -138,8 +138,10 @@ static void slice_state_remove_prefix(grpc_tcp_slice_state *state,
          native "trim the first N bytes" operation to splice */
       /* TODO(klempner): This really shouldn't be modifying the current slice
          unless we own the slices array. */
-      *current_slice = gpr_slice_split_tail(current_slice, prefix_bytes);
+      gpr_slice tail;
+      tail = gpr_slice_split_tail(current_slice, prefix_bytes);
       gpr_slice_unref(*current_slice);
+      *current_slice = tail;
       return;
     } else {
       gpr_slice_unref(*current_slice);

src/core/profiling/basic_timers.c

@@ -55,6 +55,7 @@ typedef enum {
 typedef struct grpc_timer_entry {
   grpc_precise_clock tm;
   int tag;
+  const char* tagstr;
   marker_type type;
   void* id;
   const char* file;
@@ -70,18 +71,19 @@ static void log_report() {
   int i;
   for (i = 0; i < count; i++) {
     grpc_timer_entry* entry = &(log[i]);
-    printf("GRPC_LAT_PROF " GRPC_PRECISE_CLOCK_FORMAT " %p %c %d %p %s %d\n",
+    printf("GRPC_LAT_PROF " GRPC_PRECISE_CLOCK_FORMAT
+           " %p %c %d(%s) %p %s %d\n",
            GRPC_PRECISE_CLOCK_PRINTF_ARGS(&entry->tm),
            (void*)(gpr_intptr)gpr_thd_currentid(), entry->type, entry->tag,
-           entry->id, entry->file, entry->line);
+           entry->tagstr, entry->id, entry->file, entry->line);
   }
 
   /* Now clear out the log */
   count = 0;
 }
 
-static void grpc_timers_log_add(int tag, marker_type type, void* id,
-                                const char* file, int line) {
+static void grpc_timers_log_add(int tag, const char* tagstr, marker_type type,
+                                void* id, const char* file, int line) {
   grpc_timer_entry* entry;
 
   /* TODO (vpai) : Improve concurrency */
@@ -93,6 +95,7 @@ static void grpc_timers_log_add(int tag, marker_type type, void* id,
 
   grpc_precise_clock_now(&entry->tm);
   entry->tag = tag;
+  entry->tagstr = tagstr;
   entry->type = type;
   entry->id = id;
   entry->file = file;
@@ -100,28 +103,31 @@ static void grpc_timers_log_add(int tag, marker_type type, void* id,
 }
 
 /* Latency profiler API implementation. */
-void grpc_timer_add_mark(int tag, void* id, const char* file, int line) {
+void grpc_timer_add_mark(int tag, const char* tagstr, void* id,
+                         const char* file, int line) {
   if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {
-    grpc_timers_log_add(tag, MARK, id, file, line);
+    grpc_timers_log_add(tag, tagstr, MARK, id, file, line);
   }
 }
 
-void grpc_timer_add_important_mark(int tag, void* id, const char* file,
-                                   int line) {
+void grpc_timer_add_important_mark(int tag, const char* tagstr, void* id,
+                                   const char* file, int line) {
   if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {
-    grpc_timers_log_add(tag, IMPORTANT, id, file, line);
+    grpc_timers_log_add(tag, tagstr, IMPORTANT, id, file, line);
   }
 }
 
-void grpc_timer_begin(int tag, void* id, const char* file, int line) {
+void grpc_timer_begin(int tag, const char* tagstr, void* id, const char* file,
+                      int line) {
   if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {
-    grpc_timers_log_add(tag, BEGIN, id, file, line);
+    grpc_timers_log_add(tag, tagstr, BEGIN, id, file, line);
   }
 }
 
-void grpc_timer_end(int tag, void* id, const char* file, int line) {
+void grpc_timer_end(int tag, const char* tagstr, void* id, const char* file,
+                    int line) {
   if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {
-    grpc_timers_log_add(tag, END, id, file, line);
+    grpc_timers_log_add(tag, tagstr, END, id, file, line);
   }
 }
 

src/core/profiling/stap_timers.c

@@ -42,20 +42,23 @@
 #include "src/core/profiling/stap_probes.h"
 
 /* Latency profiler API implementation. */
-void grpc_timer_add_mark(int tag, void* id, const char* file, int line) {
+void grpc_timer_add_mark(int tag, const char* tagstr, void* id,
+                         const char* file, int line) {
   _STAP_ADD_MARK(tag);
 }
 
-void grpc_timer_add_important_mark(int tag, void* id, const char* file,
-                                   int line) {
+void grpc_timer_add_important_mark(int tag, const char* tagstr, void* id,
+                                   const char* file, int line) {
   _STAP_ADD_IMPORTANT_MARK(tag);
 }
 
-void grpc_timer_begin(int tag, void* id, const char* file, int line) {
+void grpc_timer_begin(int tag, const char* tagstr, void* id, const char* file,
+                      int line) {
   _STAP_TIMING_NS_BEGIN(tag);
 }
 
-void grpc_timer_end(int tag, void* id, const char* file, int line) {
+void grpc_timer_end(int tag, const char* tagstr, void* id, const char* file,
+                    int line) {
   _STAP_TIMING_NS_END(tag);
 }
 

src/core/profiling/timers.h

@@ -41,11 +41,14 @@ extern "C" {
 void grpc_timers_global_init(void);
 void grpc_timers_global_destroy(void);
 
-void grpc_timer_add_mark(int tag, void *id, const char *file, int line);
-void grpc_timer_add_important_mark(int tag, void *id, const char *file,
-                                   int line);
-void grpc_timer_begin(int tag, void *id, const char *file, int line);
-void grpc_timer_end(int tag, void *id, const char *file, int line);
+void grpc_timer_add_mark(int tag, const char *tagstr, void *id,
+                         const char *file, int line);
+void grpc_timer_add_important_mark(int tag, const char *tagstr, void *id,
+                                   const char *file, int line);
+void grpc_timer_begin(int tag, const char *tagstr, void *id, const char *file,
+                      int line);
+void grpc_timer_end(int tag, const char *tagstr, void *id, const char *file,
+                    int line);
 
 enum grpc_profiling_tags {
   /* Any GRPC_PTAG_* >= than the threshold won't generate any profiling mark. */
@@ -103,25 +106,27 @@ enum grpc_profiling_tags {
 #endif
 
 /* Generic profiling interface. */
-#define GRPC_TIMER_MARK(tag, id)                                              \
-  if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {                                     \
-    grpc_timer_add_mark(tag, ((void *)(gpr_intptr)(id)), __FILE__, __LINE__); \
+#define GRPC_TIMER_MARK(tag, id)                                         \
+  if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {                                \
+    grpc_timer_add_mark(tag, #tag, ((void *)(gpr_intptr)(id)), __FILE__, \
+                        __LINE__);                                       \
   }
 
-#define GRPC_TIMER_IMPORTANT_MARK(tag, id)                                   \
-  if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {                                    \
-    grpc_timer_add_important_mark(tag, ((void *)(gpr_intptr)(id)), __FILE__, \
-                                  __LINE__);                                 \
+#define GRPC_TIMER_IMPORTANT_MARK(tag, id)                               \
+  if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {                                \
+    grpc_timer_add_important_mark(tag, #tag, ((void *)(gpr_intptr)(id)), \
+                                  __FILE__, __LINE__);                   \
   }
 
-#define GRPC_TIMER_BEGIN(tag, id)                                          \
-  if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {                                  \
-    grpc_timer_begin(tag, ((void *)(gpr_intptr)(id)), __FILE__, __LINE__); \
+#define GRPC_TIMER_BEGIN(tag, id)                                     \
+  if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {                             \
+    grpc_timer_begin(tag, #tag, ((void *)(gpr_intptr)(id)), __FILE__, \
+                     __LINE__);                                       \
   }
 
-#define GRPC_TIMER_END(tag, id)                                          \
-  if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {                                \
-    grpc_timer_end(tag, ((void *)(gpr_intptr)(id)), __FILE__, __LINE__); \
+#define GRPC_TIMER_END(tag, id)                                                \
+  if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {                                      \
+    grpc_timer_end(tag, #tag, ((void *)(gpr_intptr)(id)), __FILE__, __LINE__); \
   }
 
 #ifdef GRPC_STAP_PROFILER

src/core/security/security_connector.c

@@ -82,7 +82,7 @@ static const char *ssl_cipher_suites(void) {
 /* -- Common methods. -- */
 
 /* Returns the first property with that name. */
-static const tsi_peer_property *tsi_peer_get_property_by_name(
+const tsi_peer_property *tsi_peer_get_property_by_name(
     const tsi_peer *peer, const char *name) {
   size_t i;
   if (peer == NULL) return NULL;

src/core/security/security_connector.h

@@ -198,4 +198,8 @@ typedef struct {
 grpc_security_status grpc_ssl_server_security_connector_create(
     const grpc_ssl_server_config *config, grpc_security_connector **sc);
 
+/* Util. */
+const tsi_peer_property *tsi_peer_get_property_by_name(
+    const tsi_peer *peer, const char *name);
+
 #endif /* GRPC_INTERNAL_CORE_SECURITY_SECURITY_CONNECTOR_H */

src/core/support/subprocess_posix.c

@@ -55,7 +55,7 @@ struct gpr_subprocess {
   int joined;
 };
 
-char *gpr_subprocess_binary_extension() { return ""; }
+const char *gpr_subprocess_binary_extension() { return ""; }
 
 gpr_subprocess *gpr_subprocess_create(int argc, char **argv) {
   gpr_subprocess *r;

src/cpp/client/client_context.cc

@@ -34,6 +34,7 @@
 #include <grpc++/client_context.h>
 
 #include <grpc/grpc.h>
+#include <grpc++/credentials.h>
 #include <grpc++/time.h>
 
 namespace grpc {
@@ -63,6 +64,17 @@ void ClientContext::AddMetadata(const grpc::string& meta_key,
   send_initial_metadata_.insert(std::make_pair(meta_key, meta_value));
 }
 
+void ClientContext::set_call(grpc_call* call,
+                             const std::shared_ptr<ChannelInterface>& channel) {
+  GPR_ASSERT(call_ == nullptr);
+  call_ = call;
+  channel_ = channel;
+  if (creds_ && !creds_->ApplyToCall(call_)) {
+    grpc_call_cancel_with_status(call, GRPC_STATUS_CANCELLED,
+                                 "Failed to set credentials to rpc.");
+  }
+}
+
 void ClientContext::TryCancel() {
   if (call_) {
     grpc_call_cancel(call_);

src/cpp/client/create_channel.cc

@@ -41,7 +41,7 @@ namespace grpc {
 class ChannelArguments;
 
 std::shared_ptr<ChannelInterface> CreateChannel(
-    const grpc::string& target, const std::unique_ptr<Credentials>& creds,
+    const grpc::string& target, const std::shared_ptr<Credentials>& creds,
     const ChannelArguments& args) {
   return creds ? creds->CreateChannel(target, args)
                : std::shared_ptr<ChannelInterface>(

src/cpp/client/insecure_credentials.cc

@@ -52,12 +52,15 @@ class InsecureCredentialsImpl GRPC_FINAL : public Credentials {
         target, grpc_channel_create(target.c_str(), &channel_args)));
   }
 
+  // InsecureCredentials should not be applied to a call.
+  bool ApplyToCall(grpc_call* call) GRPC_OVERRIDE { return false; }
+
   SecureCredentials* AsSecureCredentials() GRPC_OVERRIDE { return nullptr; }
 };
 }  // namespace
 
-std::unique_ptr<Credentials> InsecureCredentials() {
-  return std::unique_ptr<Credentials>(new InsecureCredentialsImpl());
+std::shared_ptr<Credentials> InsecureCredentials() {
+  return std::shared_ptr<Credentials>(new InsecureCredentialsImpl());
 }
 
 }  // namespace grpc

src/cpp/client/secure_credentials.cc

@@ -49,20 +49,24 @@ std::shared_ptr<grpc::ChannelInterface> SecureCredentials::CreateChannel(
       grpc_secure_channel_create(c_creds_, target.c_str(), &channel_args)));
 }
 
+bool SecureCredentials::ApplyToCall(grpc_call* call) {
+  return grpc_call_set_credentials(call, c_creds_) == GRPC_CALL_OK;
+}
+
 namespace {
-std::unique_ptr<Credentials> WrapCredentials(grpc_credentials* creds) {
+std::shared_ptr<Credentials> WrapCredentials(grpc_credentials* creds) {
   return creds == nullptr
              ? nullptr
-             : std::unique_ptr<Credentials>(new SecureCredentials(creds));
+             : std::shared_ptr<Credentials>(new SecureCredentials(creds));
 }
 }  // namespace
 
-std::unique_ptr<Credentials> GoogleDefaultCredentials() {
+std::shared_ptr<Credentials> GoogleDefaultCredentials() {
   return WrapCredentials(grpc_google_default_credentials_create());
 }
 
 // Builds SSL Credentials given SSL specific options
-std::unique_ptr<Credentials> SslCredentials(
+std::shared_ptr<Credentials> SslCredentials(
     const SslCredentialsOptions& options) {
   grpc_ssl_pem_key_cert_pair pem_key_cert_pair = {
       options.pem_private_key.c_str(), options.pem_cert_chain.c_str()};
@@ -74,12 +78,12 @@ std::unique_ptr<Credentials> SslCredentials(
 }
 
 // Builds credentials for use when running in GCE
-std::unique_ptr<Credentials> ComputeEngineCredentials() {
+std::shared_ptr<Credentials> ComputeEngineCredentials() {
   return WrapCredentials(grpc_compute_engine_credentials_create());
 }
 
 // Builds service account credentials.
-std::unique_ptr<Credentials> ServiceAccountCredentials(
+std::shared_ptr<Credentials> ServiceAccountCredentials(
     const grpc::string& json_key, const grpc::string& scope,
     long token_lifetime_seconds) {
   if (token_lifetime_seconds <= 0) {
@@ -94,8 +98,8 @@ std::unique_ptr<Credentials> ServiceAccountCredentials(
 }
 
 // Builds JWT credentials.
-std::unique_ptr<Credentials> JWTCredentials(
-    const grpc::string& json_key, long token_lifetime_seconds) {
+std::shared_ptr<Credentials> JWTCredentials(const grpc::string& json_key,
+                                            long token_lifetime_seconds) {
   if (token_lifetime_seconds <= 0) {
     gpr_log(GPR_ERROR,
             "Trying to create JWTCredentials with non-positive lifetime");
@@ -107,14 +111,14 @@ std::unique_ptr<Credentials> JWTCredentials(
 }
 
 // Builds refresh token credentials.
-std::unique_ptr<Credentials> RefreshTokenCredentials(
+std::shared_ptr<Credentials> RefreshTokenCredentials(
     const grpc::string& json_refresh_token) {
   return WrapCredentials(
       grpc_refresh_token_credentials_create(json_refresh_token.c_str()));
 }
 
 // Builds IAM credentials.
-std::unique_ptr<Credentials> IAMCredentials(
+std::shared_ptr<Credentials> IAMCredentials(
     const grpc::string& authorization_token,
     const grpc::string& authority_selector) {
   return WrapCredentials(grpc_iam_credentials_create(
@@ -122,10 +126,10 @@ std::unique_ptr<Credentials> IAMCredentials(
 }
 
 // Combines two credentials objects into a composite credentials.
-std::unique_ptr<Credentials> CompositeCredentials(
-    const std::unique_ptr<Credentials>& creds1,
-    const std::unique_ptr<Credentials>& creds2) {
-  // Note that we are not saving unique_ptrs to the two credentials
+std::shared_ptr<Credentials> CompositeCredentials(
+    const std::shared_ptr<Credentials>& creds1,
+    const std::shared_ptr<Credentials>& creds2) {
+  // Note that we are not saving shared_ptrs to the two credentials
   // passed in here. This is OK because the underlying C objects (i.e.,
   // creds1 and creds2) into grpc_composite_credentials_create will see their
   // refcounts incremented.

src/cpp/client/secure_credentials.h

@@ -46,6 +46,7 @@ class SecureCredentials GRPC_FINAL : public Credentials {
   explicit SecureCredentials(grpc_credentials* c_creds) : c_creds_(c_creds) {}
   ~SecureCredentials() GRPC_OVERRIDE { grpc_credentials_release(c_creds_); }
   grpc_credentials* GetRawCreds() { return c_creds_; }
+  bool ApplyToCall(grpc_call* call) GRPC_OVERRIDE;
 
   std::shared_ptr<grpc::ChannelInterface> CreateChannel(
       const string& target, const grpc::ChannelArguments& args) GRPC_OVERRIDE;

src/node/src/server.js

@@ -291,7 +291,15 @@ function _read(size) {
       return;
     }
     var data = event.read;
-    if (self.push(self.deserialize(data)) && data !== null) {
+    var deserialized;
+    try {
+      deserialized = self.deserialize(data);
+    } catch (e) {
+      e.code = grpc.status.INVALID_ARGUMENT;
+      self.emit('error', e);
+      return;
+    }
+    if (self.push(deserialized) && data !== null) {
       var read_batch = {};
       read_batch[grpc.opType.RECV_MESSAGE] = true;
       self.call.startBatch(read_batch, readCallback);
@@ -354,7 +362,13 @@ function handleUnary(call, handler, metadata) {
       handleError(call, err);
       return;
     }
-    emitter.request = handler.deserialize(result.read);
+    try {
+      emitter.request = handler.deserialize(result.read);
+    } catch (e) {
+      e.code = grpc.status.INVALID_ARGUMENT;
+      handleError(call, e);
+      return;
+    }
     if (emitter.cancelled) {
       return;
     }
@@ -388,7 +402,13 @@ function handleServerStreaming(call, handler, metadata) {
       stream.emit('error', err);
       return;
     }
-    stream.request = handler.deserialize(result.read);
+    try {
+      stream.request = handler.deserialize(result.read);
+    } catch (e) {
+      e.code = grpc.status.INVALID_ARGUMENT;
+      stream.emit('error', e);
+      return;
+    }
     handler.func(stream);
   });
 }
@@ -401,6 +421,9 @@ function handleServerStreaming(call, handler, metadata) {
  */
 function handleClientStreaming(call, handler, metadata) {
   var stream = new ServerReadableStream(call, handler.deserialize);
+  stream.on('error', function(error) {
+    handleError(call, error);
+  });
   waitForCancel(call, stream);
   var metadata_batch = {};
   metadata_batch[grpc.opType.SEND_INITIAL_METADATA] = metadata;

src/node/test/surface_test.js

@@ -47,6 +47,8 @@ var mathService = math_proto.lookup('math.Math');
 
 var capitalize = require('underscore.string/capitalize');
 
+var _ = require('underscore');
+
 describe('File loader', function() {
   it('Should load a proto file by default', function() {
     assert.doesNotThrow(function() {
@@ -178,9 +180,10 @@ describe('Generic client and server', function() {
     });
   });
 });
-describe('Trailing metadata', function() {
+describe('Other conditions', function() {
   var client;
   var server;
+  var port;
   before(function() {
     var test_proto = ProtoBuf.loadProtoFile(__dirname + '/test_service.proto');
     var test_service = test_proto.lookup('TestService');
@@ -246,7 +249,7 @@ describe('Trailing metadata', function() {
         }
       }
     });
-    var port = server.bind('localhost:0');
+    port = server.bind('localhost:0');
     var Client = surface_client.makeProtobufClientConstructor(test_service);
     client = new Client('localhost:' + port);
     server.listen();
@@ -254,86 +257,167 @@ describe('Trailing metadata', function() {
   after(function() {
     server.shutdown();
   });
-  it('should be present when a unary call succeeds', function(done) {
-    var call = client.unary({error: false}, function(err, data) {
-      assert.ifError(err);
+  describe('Server recieving bad input', function() {
+    var misbehavingClient;
+    var badArg = new Buffer([0xFF]);
+    before(function() {
+      var test_service_attrs = {
+        unary: {
+          path: '/TestService/Unary',
+          requestStream: false,
+          responseStream: false,
+          requestSerialize: _.identity,
+          responseDeserialize: _.identity
+        },
+        clientStream: {
+          path: '/TestService/ClientStream',
+          requestStream: true,
+          responseStream: false,
+          requestSerialize: _.identity,
+          responseDeserialize: _.identity
+        },
+        serverStream: {
+          path: '/TestService/ServerStream',
+          requestStream: false,
+          responseStream: true,
+          requestSerialize: _.identity,
+          responseDeserialize: _.identity
+        },
+        bidiStream: {
+          path: '/TestService/BidiStream',
+          requestStream: true,
+          responseStream: true,
+          requestSerialize: _.identity,
+          responseDeserialize: _.identity
+        }
+      };
+      var Client = surface_client.makeClientConstructor(test_service_attrs,
+                                                        'TestService');
+      misbehavingClient = new Client('localhost:' + port);
     });
-    call.on('status', function(status) {
-      assert.deepEqual(status.metadata.metadata, ['yes']);
-      done();
+    it('should respond correctly to a unary call', function(done) {
+      misbehavingClient.unary(badArg, function(err, data) {
+        assert(err);
+        assert.strictEqual(err.code, grpc.status.INVALID_ARGUMENT);
+        done();
+      });
     });
-  });
-  it('should be present when a unary call fails', function(done) {
-    var call = client.unary({error: true}, function(err, data) {
-      assert(err);
+    it('should respond correctly to a client stream', function(done) {
+      var call = misbehavingClient.clientStream(function(err, data) {
+        assert(err);
+        assert.strictEqual(err.code, grpc.status.INVALID_ARGUMENT);
+        done();
+      });
+      call.write(badArg);
+      // TODO(mlumish): Remove call.end()
+      call.end();
     });
-    call.on('status', function(status) {
-      assert.deepEqual(status.metadata.metadata, ['yes']);
-      done();
+    it('should respond correctly to a server stream', function(done) {
+      var call = misbehavingClient.serverStream(badArg);
+      call.on('data', function(data) {
+        assert.fail(data, null, 'Unexpected data', '===');
+      });
+      call.on('error', function(err) {
+        assert.strictEqual(err.code, grpc.status.INVALID_ARGUMENT);
+        done();
+      });
+    });
+    it('should respond correctly to a bidi stream', function(done) {
+      var call = misbehavingClient.bidiStream();
+      call.on('data', function(data) {
+        assert.fail(data, null, 'Unexpected data', '===');
+      });
+      call.on('error', function(err) {
+        assert.strictEqual(err.code, grpc.status.INVALID_ARGUMENT);
+        done();
+      });
+      call.write(badArg);
+      // TODO(mlumish): Remove call.end()
+      call.end();
     });
   });
-  it('should be present when a client stream call succeeds', function(done) {
-    var call = client.clientStream(function(err, data) {
-      assert.ifError(err);
+  describe('Trailing metadata', function() {
+    it('should be present when a unary call succeeds', function(done) {
+      var call = client.unary({error: false}, function(err, data) {
+        assert.ifError(err);
+      });
+      call.on('status', function(status) {
+        assert.deepEqual(status.metadata.metadata, ['yes']);
+        done();
+      });
     });
-    call.write({error: false});
-    call.write({error: false});
-    call.end();
-    call.on('status', function(status) {
-      assert.deepEqual(status.metadata.metadata, ['yes']);
-      done();
+    it('should be present when a unary call fails', function(done) {
+      var call = client.unary({error: true}, function(err, data) {
+        assert(err);
+      });
+      call.on('status', function(status) {
+        assert.deepEqual(status.metadata.metadata, ['yes']);
+        done();
+      });
     });
-  });
-  it('should be present when a client stream call fails', function(done) {
-    var call = client.clientStream(function(err, data) {
-      assert(err);
+    it('should be present when a client stream call succeeds', function(done) {
+      var call = client.clientStream(function(err, data) {
+        assert.ifError(err);
+      });
+      call.write({error: false});
+      call.write({error: false});
+      call.end();
+      call.on('status', function(status) {
+        assert.deepEqual(status.metadata.metadata, ['yes']);
+        done();
+      });
     });
-    call.write({error: false});
-    call.write({error: true});
-    call.end();
-    call.on('status', function(status) {
-      assert.deepEqual(status.metadata.metadata, ['yes']);
-      done();
+    it('should be present when a client stream call fails', function(done) {
+      var call = client.clientStream(function(err, data) {
+        assert(err);
+      });
+      call.write({error: false});
+      call.write({error: true});
+      call.end();
+      call.on('status', function(status) {
+        assert.deepEqual(status.metadata.metadata, ['yes']);
+        done();
+      });
     });
-  });
-  it('should be present when a server stream call succeeds', function(done) {
-    var call = client.serverStream({error: false});
-    call.on('data', function(){});
-    call.on('status', function(status) {
-      assert.strictEqual(status.code, grpc.status.OK);
-      assert.deepEqual(status.metadata.metadata, ['yes']);
-      done();
+    it('should be present when a server stream call succeeds', function(done) {
+      var call = client.serverStream({error: false});
+      call.on('data', function(){});
+      call.on('status', function(status) {
+        assert.strictEqual(status.code, grpc.status.OK);
+        assert.deepEqual(status.metadata.metadata, ['yes']);
+        done();
+      });
     });
-  });
-  it('should be present when a server stream call fails', function(done) {
-    var call = client.serverStream({error: true});
-    call.on('data', function(){});
-    call.on('error', function(error) {
-      assert.deepEqual(error.metadata.metadata, ['yes']);
-      done();
+    it('should be present when a server stream call fails', function(done) {
+      var call = client.serverStream({error: true});
+      call.on('data', function(){});
+      call.on('error', function(error) {
+        assert.deepEqual(error.metadata.metadata, ['yes']);
+        done();
+      });
     });
-  });
-  it('should be present when a bidi stream succeeds', function(done) {
-    var call = client.bidiStream();
-    call.write({error: false});
-    call.write({error: false});
-    call.end();
-    call.on('data', function(){});
-    call.on('status', function(status) {
-      assert.strictEqual(status.code, grpc.status.OK);
-      assert.deepEqual(status.metadata.metadata, ['yes']);
-      done();
+    it('should be present when a bidi stream succeeds', function(done) {
+      var call = client.bidiStream();
+      call.write({error: false});
+      call.write({error: false});
+      call.end();
+      call.on('data', function(){});
+      call.on('status', function(status) {
+        assert.strictEqual(status.code, grpc.status.OK);
+        assert.deepEqual(status.metadata.metadata, ['yes']);
+        done();
+      });
     });
-  });
-  it('should be present when a bidi stream fails', function(done) {
-    var call = client.bidiStream();
-    call.write({error: false});
-    call.write({error: true});
-    call.end();
-    call.on('data', function(){});
-    call.on('error', function(error) {
-      assert.deepEqual(error.metadata.metadata, ['yes']);
-      done();
+    it('should be present when a bidi stream fails', function(done) {
+      var call = client.bidiStream();
+      call.write({error: false});
+      call.write({error: true});
+      call.end();
+      call.on('data', function(){});
+      call.on('error', function(error) {
+        assert.deepEqual(error.metadata.metadata, ['yes']);
+        done();
+      });
     });
   });
 });

src/objective-c/ProtoRPC/ProtoRPC.m

@@ -36,7 +36,7 @@
 #import <gRPC/GRXWriteable.h>
 #import <gRPC/GRXWriter.h>
 #import <gRPC/GRXWriter+Transformations.h>
-#import <ProtocolBuffers/ProtocolBuffers.h>
+#import <Protobuf/GPBProtocolBuffers.h>
 
 @implementation ProtoRPC {
   id<GRXWriteable> _responseWriteable;
@@ -65,7 +65,7 @@
   }
   // A writer that serializes the proto messages to send.
   id<GRXWriter> bytesWriter =
-      [[[GRXWriter alloc] initWithWriter:requestsWriter] map:^id(PBGeneratedMessage *proto) {
+      [[[GRXWriter alloc] initWithWriter:requestsWriter] map:^id(GPBMessage *proto) {
         return [proto data];
       }];
   if ((self = [super initWithHost:host method:method requestsWriter:bytesWriter])) {

src/objective-c/RxLibrary/GRXBufferedPipe.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.
+ *
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GRXWriteable.h"
+#import "GRXWriter.h"
+
+// A buffered pipe is a Writeable that also acts as a Writer (to whichever other writeable is passed
+// to -startWithWriteable:).
+// Once it is started, whatever values are written into it (via -didReceiveValue:) will be
+// propagated immediately, unless flow control prevents it.
+// If it is throttled and keeps receiving values, as well as if it receives values before being
+// started, it will buffer them and propagate them in order as soon as its state becomes
+// GRXWriterStateStarted.
+// If it receives an error (via -didFinishWithError:), it will drop any buffered values and
+// propagate the error immediately.
+//
+// Beware that a pipe of this type can't prevent receiving more values when it is paused (for
+// example if used to write data to a congested network connection). Because in such situations the
+// pipe will keep buffering all data written to it, your application could run out of memory and
+// crash. If you want to react to flow control signals to prevent that, instead of using this class
+// you can implement an object that conforms to GRXWriter.
+@interface GRXBufferedPipe : NSObject<GRXWriteable, GRXWriter>
+
+// Convenience constructor.
++ (instancetype)pipe;
+
+@end

src/objective-c/RxLibrary/GRXBufferedPipe.m

@@ -0,0 +1,146 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#import "GRXBufferedPipe.h"
+
+@implementation GRXBufferedPipe {
+  id<GRXWriteable> _writeable;
+  NSMutableArray *_queue;
+  BOOL _inputIsFinished;
+  NSError *_errorOrNil;
+}
+
+@synthesize state = _state;
+
++ (instancetype)pipe {
+  return [[self alloc] init];
+}
+
+- (instancetype)init {
+  if (self = [super init]) {
+    _queue = [NSMutableArray array];
+    _state = GRXWriterStateNotStarted;
+  }
+  return self;
+}
+
+- (id)popValue {
+  id value = _queue[0];
+  [_queue removeObjectAtIndex:0];
+  return value;
+}
+
+- (void)writeBufferUntilPausedOrStopped {
+  while (_state == GRXWriterStateStarted && _queue.count > 0) {
+    [_writeable didReceiveValue:[self popValue]];
+  }
+  if (_inputIsFinished && _queue.count == 0) {
+    // Our writer finished normally while we were paused or not-started-yet.
+    [self finishWithError:_errorOrNil];
+  }
+}
+
+#pragma mark GRXWriteable implementation
+
+// Returns whether events can be simply propagated to the other end of the pipe.
+- (BOOL)shouldFastForward {
+  return _state == GRXWriterStateStarted && _queue.count == 0;
+}
+
+- (void)didReceiveValue:(id)value {
+  if (self.shouldFastForward) {
+    // Skip the queue.
+    [_writeable didReceiveValue:value];
+  } else {
+    // Even if we're paused and with enqueued values, we can't excert back-pressure to our writer.
+    // So just buffer the new value.
+    // We need a copy, so that it doesn't mutate before it's written at the other end of the pipe.
+    if ([value respondsToSelector:@selector(copy)]) {
+      value = [value copy];
+    }
+    [_queue addObject:value];
+  }
+}
+
+- (void)didFinishWithError:(NSError *)errorOrNil {
+  _inputIsFinished = YES;
+  _errorOrNil = errorOrNil;
+  if (errorOrNil || self.shouldFastForward) {
+    // No need to write pending values.
+    [self finishWithError:_errorOrNil];
+  }
+}
+
+#pragma mark GRXWriter implementation
+
+- (void)setState:(GRXWriterState)newState {
+  // Manual transitions are only allowed from the started or paused states.
+  if (_state == GRXWriterStateNotStarted || _state == GRXWriterStateFinished) {
+    return;
+  }
+
+  switch (newState) {
+    case GRXWriterStateFinished:
+      _state = newState;
+      _queue = nil;
+      // Per GRXWriter's contract, setting the state to Finished manually means one doesn't wish the
+      // writeable to be messaged anymore.
+      _writeable = nil;
+      return;
+    case GRXWriterStatePaused:
+      _state = newState;
+      return;
+    case GRXWriterStateStarted:
+      if (_state == GRXWriterStatePaused) {
+        _state = newState;
+        [self writeBufferUntilPausedOrStopped];
+      }
+      return;
+    case GRXWriterStateNotStarted:
+      return;
+  }
+}
+
+- (void)startWithWriteable:(id<GRXWriteable>)writeable {
+  _state = GRXWriterStateStarted;
+  _writeable = writeable;
+  [self writeBufferUntilPausedOrStopped];
+}
+
+- (void)finishWithError:(NSError *)errorOrNil {
+  id<GRXWriteable> writeable = _writeable;
+  self.state = GRXWriterStateFinished;
+  [writeable didFinishWithError:errorOrNil];
+}
+
+@end

src/objective-c/examples/Sample/Podfile

@@ -2,6 +2,7 @@ source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 
 pod 'gRPC', :path => "../../../.."
+pod 'Protobuf', :git => 'https://github.com/jcanizales/protobuf.git', :branch => 'add-podspec'
 pod 'Route_guide', :path => "RouteGuideClient"
 pod 'RemoteTest', :path => "RemoteTestClient"
 

src/objective-c/examples/Sample/RemoteTestClient/Empty.pb.h

@@ -1,103 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-
-#import <ProtocolBuffers/ProtocolBuffers.h>
-
-// @@protoc_insertion_point(imports)
-
-@class ObjectiveCFileOptions;
-@class ObjectiveCFileOptionsBuilder;
-@class PBDescriptorProto;
-@class PBDescriptorProtoBuilder;
-@class PBDescriptorProtoExtensionRange;
-@class PBDescriptorProtoExtensionRangeBuilder;
-@class PBEnumDescriptorProto;
-@class PBEnumDescriptorProtoBuilder;
-@class PBEnumOptions;
-@class PBEnumOptionsBuilder;
-@class PBEnumValueDescriptorProto;
-@class PBEnumValueDescriptorProtoBuilder;
-@class PBEnumValueOptions;
-@class PBEnumValueOptionsBuilder;
-@class PBFieldDescriptorProto;
-@class PBFieldDescriptorProtoBuilder;
-@class PBFieldOptions;
-@class PBFieldOptionsBuilder;
-@class PBFileDescriptorProto;
-@class PBFileDescriptorProtoBuilder;
-@class PBFileDescriptorSet;
-@class PBFileDescriptorSetBuilder;
-@class PBFileOptions;
-@class PBFileOptionsBuilder;
-@class PBMessageOptions;
-@class PBMessageOptionsBuilder;
-@class PBMethodDescriptorProto;
-@class PBMethodDescriptorProtoBuilder;
-@class PBMethodOptions;
-@class PBMethodOptionsBuilder;
-@class PBOneofDescriptorProto;
-@class PBOneofDescriptorProtoBuilder;
-@class PBServiceDescriptorProto;
-@class PBServiceDescriptorProtoBuilder;
-@class PBServiceOptions;
-@class PBServiceOptionsBuilder;
-@class PBSourceCodeInfo;
-@class PBSourceCodeInfoBuilder;
-@class PBSourceCodeInfoLocation;
-@class PBSourceCodeInfoLocationBuilder;
-@class PBUninterpretedOption;
-@class PBUninterpretedOptionBuilder;
-@class PBUninterpretedOptionNamePart;
-@class PBUninterpretedOptionNamePartBuilder;
-@class RMTEmpty;
-@class RMTEmptyBuilder;
-
-
-
-@interface RMTEmptyRoot : NSObject {
-}
-+ (PBExtensionRegistry*) extensionRegistry;
-+ (void) registerAllExtensions:(PBMutableExtensionRegistry*) registry;
-@end
-
-@interface RMTEmpty : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-}
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RMTEmptyBuilder*) builder;
-+ (RMTEmptyBuilder*) builder;
-+ (RMTEmptyBuilder*) builderWithPrototype:(RMTEmpty*) prototype;
-- (RMTEmptyBuilder*) toBuilder;
-
-+ (RMTEmpty*) parseFromData:(NSData*) data;
-+ (RMTEmpty*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTEmpty*) parseFromInputStream:(NSInputStream*) input;
-+ (RMTEmpty*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTEmpty*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RMTEmpty*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RMTEmptyBuilder : PBGeneratedMessageBuilder {
-@private
-  RMTEmpty* resultEmpty;
-}
-
-- (RMTEmpty*) defaultInstance;
-
-- (RMTEmptyBuilder*) clear;
-- (RMTEmptyBuilder*) clone;
-
-- (RMTEmpty*) build;
-- (RMTEmpty*) buildPartial;
-
-- (RMTEmptyBuilder*) mergeFrom:(RMTEmpty*) other;
-- (RMTEmptyBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RMTEmptyBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-
-// @@protoc_insertion_point(global_scope)

src/objective-c/examples/Sample/RemoteTestClient/Empty.pb.m

@@ -1,179 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-
-#import "Empty.pb.h"
-// @@protoc_insertion_point(imports)
-
-@implementation RMTEmptyRoot
-static PBExtensionRegistry* extensionRegistry = nil;
-+ (PBExtensionRegistry*) extensionRegistry {
-  return extensionRegistry;
-}
-
-+ (void) initialize {
-  if (self == [RMTEmptyRoot class]) {
-    PBMutableExtensionRegistry* registry = [PBMutableExtensionRegistry registry];
-    [self registerAllExtensions:registry];
-    [ObjectivecDescriptorRoot registerAllExtensions:registry];
-    extensionRegistry = registry;
-  }
-}
-+ (void) registerAllExtensions:(PBMutableExtensionRegistry*) registry {
-}
-@end
-
-@interface RMTEmpty ()
-@end
-
-@implementation RMTEmpty
-
-- (instancetype) init {
-  if ((self = [super init])) {
-  }
-  return self;
-}
-static RMTEmpty* defaultRMTEmptyInstance = nil;
-+ (void) initialize {
-  if (self == [RMTEmpty class]) {
-    defaultRMTEmptyInstance = [[RMTEmpty alloc] init];
-  }
-}
-+ (instancetype) defaultInstance {
-  return defaultRMTEmptyInstance;
-}
-- (instancetype) defaultInstance {
-  return defaultRMTEmptyInstance;
-}
-- (BOOL) isInitialized {
-  return YES;
-}
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output {
-  [self.unknownFields writeToCodedOutputStream:output];
-}
-- (SInt32) serializedSize {
-  __block SInt32 size_ = memoizedSerializedSize;
-  if (size_ != -1) {
-    return size_;
-  }
-
-  size_ = 0;
-  size_ += self.unknownFields.serializedSize;
-  memoizedSerializedSize = size_;
-  return size_;
-}
-+ (RMTEmpty*) parseFromData:(NSData*) data {
-  return (RMTEmpty*)[[[RMTEmpty builder] mergeFromData:data] build];
-}
-+ (RMTEmpty*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry {
-  return (RMTEmpty*)[[[RMTEmpty builder] mergeFromData:data extensionRegistry:extensionRegistry] build];
-}
-+ (RMTEmpty*) parseFromInputStream:(NSInputStream*) input {
-  return (RMTEmpty*)[[[RMTEmpty builder] mergeFromInputStream:input] build];
-}
-+ (RMTEmpty*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry {
-  return (RMTEmpty*)[[[RMTEmpty builder] mergeFromInputStream:input extensionRegistry:extensionRegistry] build];
-}
-+ (RMTEmpty*) parseFromCodedInputStream:(PBCodedInputStream*) input {
-  return (RMTEmpty*)[[[RMTEmpty builder] mergeFromCodedInputStream:input] build];
-}
-+ (RMTEmpty*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry {
-  return (RMTEmpty*)[[[RMTEmpty builder] mergeFromCodedInputStream:input extensionRegistry:extensionRegistry] build];
-}
-+ (RMTEmptyBuilder*) builder {
-  return [[RMTEmptyBuilder alloc] init];
-}
-+ (RMTEmptyBuilder*) builderWithPrototype:(RMTEmpty*) prototype {
-  return [[RMTEmpty builder] mergeFrom:prototype];
-}
-- (RMTEmptyBuilder*) builder {
-  return [RMTEmpty builder];
-}
-- (RMTEmptyBuilder*) toBuilder {
-  return [RMTEmpty builderWithPrototype:self];
-}
-- (void) writeDescriptionTo:(NSMutableString*) output withIndent:(NSString*) indent {
-  [self.unknownFields writeDescriptionTo:output withIndent:indent];
-}
-- (BOOL) isEqual:(id)other {
-  if (other == self) {
-    return YES;
-  }
-  if (![other isKindOfClass:[RMTEmpty class]]) {
-    return NO;
-  }
-  RMTEmpty *otherMessage = other;
-  return
-      (self.unknownFields == otherMessage.unknownFields || (self.unknownFields != nil && [self.unknownFields isEqual:otherMessage.unknownFields]));
-}
-- (NSUInteger) hash {
-  __block NSUInteger hashCode = 7;
-  hashCode = hashCode * 31 + [self.unknownFields hash];
-  return hashCode;
-}
-@end
-
-@interface RMTEmptyBuilder()
-@property (strong) RMTEmpty* resultEmpty;
-@end
-
-@implementation RMTEmptyBuilder
-@synthesize resultEmpty;
-- (instancetype) init {
-  if ((self = [super init])) {
-    self.resultEmpty = [[RMTEmpty alloc] init];
-  }
-  return self;
-}
-- (PBGeneratedMessage*) internalGetResult {
-  return resultEmpty;
-}
-- (RMTEmptyBuilder*) clear {
-  self.resultEmpty = [[RMTEmpty alloc] init];
-  return self;
-}
-- (RMTEmptyBuilder*) clone {
-  return [RMTEmpty builderWithPrototype:resultEmpty];
-}
-- (RMTEmpty*) defaultInstance {
-  return [RMTEmpty defaultInstance];
-}
-- (RMTEmpty*) build {
-  [self checkInitialized];
-  return [self buildPartial];
-}
-- (RMTEmpty*) buildPartial {
-  RMTEmpty* returnMe = resultEmpty;
-  self.resultEmpty = nil;
-  return returnMe;
-}
-- (RMTEmptyBuilder*) mergeFrom:(RMTEmpty*) other {
-  if (other == [RMTEmpty defaultInstance]) {
-    return self;
-  }
-  [self mergeUnknownFields:other.unknownFields];
-  return self;
-}
-- (RMTEmptyBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input {
-  return [self mergeFromCodedInputStream:input extensionRegistry:[PBExtensionRegistry emptyRegistry]];
-}
-- (RMTEmptyBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry {
-  PBUnknownFieldSetBuilder* unknownFields = [PBUnknownFieldSet builderWithUnknownFields:self.unknownFields];
-  while (YES) {
-    SInt32 tag = [input readTag];
-    switch (tag) {
-      case 0:
-        [self setUnknownFields:[unknownFields build]];
-        return self;
-      default: {
-        if (![self parseUnknownField:input unknownFields:unknownFields extensionRegistry:extensionRegistry tag:tag]) {
-          [self setUnknownFields:[unknownFields build]];
-          return self;
-        }
-        break;
-      }
-    }
-  }
-}
-@end
-
-
-// @@protoc_insertion_point(global_scope)

src/objective-c/examples/Sample/RemoteTestClient/Empty.pbobjc.h

@@ -0,0 +1,33 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: empty.proto
+
+#import "GPBProtocolBuffers.h"
+
+#if GOOGLE_PROTOBUF_OBJC_GEN_VERSION != 30000
+#error This file was generated by a different version of protoc-gen-objc which is incompatible with your Protocol Buffer sources.
+#endif
+
+CF_EXTERN_C_BEGIN
+
+@class RMTEmpty;
+
+
+#pragma mark - RMTEmptyRoot
+
+@interface RMTEmptyRoot : GPBRootObject
+@end
+
+#pragma mark - RMTEmpty
+
+// An empty message that you can re-use to avoid defining duplicated empty
+// messages in your project. A typical example is to use it as argument or the
+// return value of a service API. For instance:
+//
+//   service Foo {
+//     rpc Bar (grpc.testing.Empty) returns (grpc.testing.Empty) { };
+//   };
+@interface RMTEmpty : GPBMessage
+
+@end
+
+CF_EXTERN_C_END

src/objective-c/examples/Sample/RemoteTestClient/Empty.pbobjc.m

@@ -0,0 +1,59 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: empty.proto
+
+#import "GPBProtocolBuffers_RuntimeSupport.h"
+
+#import "Empty.pbobjc.h"
+
+#pragma mark - RMTEmptyRoot
+
+@implementation RMTEmptyRoot
+
+@end
+
+static GPBFileDescriptor *RMTEmptyRoot_FileDescriptor(void) {
+  // This is called by +initialize so there is no need to worry
+  // about thread safety of the singleton.
+  static GPBFileDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    descriptor = [[GPBFileDescriptor alloc] initWithPackage:@"grpc.testing"
+                                                     syntax:GPBFileSyntaxProto3];
+  }
+  return descriptor;
+}
+
+#pragma mark - RMTEmpty
+
+@implementation RMTEmpty
+
+
+typedef struct RMTEmpty_Storage {
+  uint32_t _has_storage_[0];
+} RMTEmpty_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RMTEmpty class]
+                                              rootClass:[RMTEmptyRoot class]
+                                                   file:RMTEmptyRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RMTEmpty_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+

src/objective-c/examples/Sample/RemoteTestClient/Messages.pb.h

@@ -1,578 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-
-#import <ProtocolBuffers/ProtocolBuffers.h>
-
-// @@protoc_insertion_point(imports)
-
-@class ObjectiveCFileOptions;
-@class ObjectiveCFileOptionsBuilder;
-@class PBDescriptorProto;
-@class PBDescriptorProtoBuilder;
-@class PBDescriptorProtoExtensionRange;
-@class PBDescriptorProtoExtensionRangeBuilder;
-@class PBEnumDescriptorProto;
-@class PBEnumDescriptorProtoBuilder;
-@class PBEnumOptions;
-@class PBEnumOptionsBuilder;
-@class PBEnumValueDescriptorProto;
-@class PBEnumValueDescriptorProtoBuilder;
-@class PBEnumValueOptions;
-@class PBEnumValueOptionsBuilder;
-@class PBFieldDescriptorProto;
-@class PBFieldDescriptorProtoBuilder;
-@class PBFieldOptions;
-@class PBFieldOptionsBuilder;
-@class PBFileDescriptorProto;
-@class PBFileDescriptorProtoBuilder;
-@class PBFileDescriptorSet;
-@class PBFileDescriptorSetBuilder;
-@class PBFileOptions;
-@class PBFileOptionsBuilder;
-@class PBMessageOptions;
-@class PBMessageOptionsBuilder;
-@class PBMethodDescriptorProto;
-@class PBMethodDescriptorProtoBuilder;
-@class PBMethodOptions;
-@class PBMethodOptionsBuilder;
-@class PBOneofDescriptorProto;
-@class PBOneofDescriptorProtoBuilder;
-@class PBServiceDescriptorProto;
-@class PBServiceDescriptorProtoBuilder;
-@class PBServiceOptions;
-@class PBServiceOptionsBuilder;
-@class PBSourceCodeInfo;
-@class PBSourceCodeInfoBuilder;
-@class PBSourceCodeInfoLocation;
-@class PBSourceCodeInfoLocationBuilder;
-@class PBUninterpretedOption;
-@class PBUninterpretedOptionBuilder;
-@class PBUninterpretedOptionNamePart;
-@class PBUninterpretedOptionNamePartBuilder;
-@class RMTPayload;
-@class RMTPayloadBuilder;
-@class RMTResponseParameters;
-@class RMTResponseParametersBuilder;
-@class RMTSimpleRequest;
-@class RMTSimpleRequestBuilder;
-@class RMTSimpleResponse;
-@class RMTSimpleResponseBuilder;
-@class RMTStreamingInputCallRequest;
-@class RMTStreamingInputCallRequestBuilder;
-@class RMTStreamingInputCallResponse;
-@class RMTStreamingInputCallResponseBuilder;
-@class RMTStreamingOutputCallRequest;
-@class RMTStreamingOutputCallRequestBuilder;
-@class RMTStreamingOutputCallResponse;
-@class RMTStreamingOutputCallResponseBuilder;
-
-
-typedef NS_ENUM(SInt32, RMTPayloadType) {
-  RMTPayloadTypeCompressable = 0,
-  RMTPayloadTypeUncompressable = 1,
-  RMTPayloadTypeRandom = 2,
-};
-
-BOOL RMTPayloadTypeIsValidValue(RMTPayloadType value);
-NSString *NSStringFromRMTPayloadType(RMTPayloadType value);
-
-
-@interface RMTMessagesRoot : NSObject {
-}
-+ (PBExtensionRegistry*) extensionRegistry;
-+ (void) registerAllExtensions:(PBMutableExtensionRegistry*) registry;
-@end
-
-@interface RMTPayload : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasBody_:1;
-  BOOL hasType_:1;
-  NSData* body;
-  RMTPayloadType type;
-}
-- (BOOL) hasType;
-- (BOOL) hasBody;
-@property (readonly) RMTPayloadType type;
-@property (readonly, strong) NSData* body;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RMTPayloadBuilder*) builder;
-+ (RMTPayloadBuilder*) builder;
-+ (RMTPayloadBuilder*) builderWithPrototype:(RMTPayload*) prototype;
-- (RMTPayloadBuilder*) toBuilder;
-
-+ (RMTPayload*) parseFromData:(NSData*) data;
-+ (RMTPayload*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTPayload*) parseFromInputStream:(NSInputStream*) input;
-+ (RMTPayload*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTPayload*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RMTPayload*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RMTPayloadBuilder : PBGeneratedMessageBuilder {
-@private
-  RMTPayload* resultPayload;
-}
-
-- (RMTPayload*) defaultInstance;
-
-- (RMTPayloadBuilder*) clear;
-- (RMTPayloadBuilder*) clone;
-
-- (RMTPayload*) build;
-- (RMTPayload*) buildPartial;
-
-- (RMTPayloadBuilder*) mergeFrom:(RMTPayload*) other;
-- (RMTPayloadBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RMTPayloadBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasType;
-- (RMTPayloadType) type;
-- (RMTPayloadBuilder*) setType:(RMTPayloadType) value;
-- (RMTPayloadBuilder*) clearType;
-
-- (BOOL) hasBody;
-- (NSData*) body;
-- (RMTPayloadBuilder*) setBody:(NSData*) value;
-- (RMTPayloadBuilder*) clearBody;
-@end
-
-@interface RMTSimpleRequest : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasFillUsername_:1;
-  BOOL hasFillOauthScope_:1;
-  BOOL hasResponseSize_:1;
-  BOOL hasPayload_:1;
-  BOOL hasResponseType_:1;
-  BOOL fillUsername_:1;
-  BOOL fillOauthScope_:1;
-  SInt32 responseSize;
-  RMTPayload* payload;
-  RMTPayloadType responseType;
-}
-- (BOOL) hasResponseType;
-- (BOOL) hasResponseSize;
-- (BOOL) hasPayload;
-- (BOOL) hasFillUsername;
-- (BOOL) hasFillOauthScope;
-@property (readonly) RMTPayloadType responseType;
-@property (readonly) SInt32 responseSize;
-@property (readonly, strong) RMTPayload* payload;
-- (BOOL) fillUsername;
-- (BOOL) fillOauthScope;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RMTSimpleRequestBuilder*) builder;
-+ (RMTSimpleRequestBuilder*) builder;
-+ (RMTSimpleRequestBuilder*) builderWithPrototype:(RMTSimpleRequest*) prototype;
-- (RMTSimpleRequestBuilder*) toBuilder;
-
-+ (RMTSimpleRequest*) parseFromData:(NSData*) data;
-+ (RMTSimpleRequest*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTSimpleRequest*) parseFromInputStream:(NSInputStream*) input;
-+ (RMTSimpleRequest*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTSimpleRequest*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RMTSimpleRequest*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RMTSimpleRequestBuilder : PBGeneratedMessageBuilder {
-@private
-  RMTSimpleRequest* resultSimpleRequest;
-}
-
-- (RMTSimpleRequest*) defaultInstance;
-
-- (RMTSimpleRequestBuilder*) clear;
-- (RMTSimpleRequestBuilder*) clone;
-
-- (RMTSimpleRequest*) build;
-- (RMTSimpleRequest*) buildPartial;
-
-- (RMTSimpleRequestBuilder*) mergeFrom:(RMTSimpleRequest*) other;
-- (RMTSimpleRequestBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RMTSimpleRequestBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasResponseType;
-- (RMTPayloadType) responseType;
-- (RMTSimpleRequestBuilder*) setResponseType:(RMTPayloadType) value;
-- (RMTSimpleRequestBuilder*) clearResponseType;
-
-- (BOOL) hasResponseSize;
-- (SInt32) responseSize;
-- (RMTSimpleRequestBuilder*) setResponseSize:(SInt32) value;
-- (RMTSimpleRequestBuilder*) clearResponseSize;
-
-- (BOOL) hasPayload;
-- (RMTPayload*) payload;
-- (RMTSimpleRequestBuilder*) setPayload:(RMTPayload*) value;
-- (RMTSimpleRequestBuilder*) setPayloadBuilder:(RMTPayloadBuilder*) builderForValue;
-- (RMTSimpleRequestBuilder*) mergePayload:(RMTPayload*) value;
-- (RMTSimpleRequestBuilder*) clearPayload;
-
-- (BOOL) hasFillUsername;
-- (BOOL) fillUsername;
-- (RMTSimpleRequestBuilder*) setFillUsername:(BOOL) value;
-- (RMTSimpleRequestBuilder*) clearFillUsername;
-
-- (BOOL) hasFillOauthScope;
-- (BOOL) fillOauthScope;
-- (RMTSimpleRequestBuilder*) setFillOauthScope:(BOOL) value;
-- (RMTSimpleRequestBuilder*) clearFillOauthScope;
-@end
-
-@interface RMTSimpleResponse : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasUsername_:1;
-  BOOL hasOauthScope_:1;
-  BOOL hasPayload_:1;
-  NSString* username;
-  NSString* oauthScope;
-  RMTPayload* payload;
-}
-- (BOOL) hasPayload;
-- (BOOL) hasUsername;
-- (BOOL) hasOauthScope;
-@property (readonly, strong) RMTPayload* payload;
-@property (readonly, strong) NSString* username;
-@property (readonly, strong) NSString* oauthScope;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RMTSimpleResponseBuilder*) builder;
-+ (RMTSimpleResponseBuilder*) builder;
-+ (RMTSimpleResponseBuilder*) builderWithPrototype:(RMTSimpleResponse*) prototype;
-- (RMTSimpleResponseBuilder*) toBuilder;
-
-+ (RMTSimpleResponse*) parseFromData:(NSData*) data;
-+ (RMTSimpleResponse*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTSimpleResponse*) parseFromInputStream:(NSInputStream*) input;
-+ (RMTSimpleResponse*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTSimpleResponse*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RMTSimpleResponse*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RMTSimpleResponseBuilder : PBGeneratedMessageBuilder {
-@private
-  RMTSimpleResponse* resultSimpleResponse;
-}
-
-- (RMTSimpleResponse*) defaultInstance;
-
-- (RMTSimpleResponseBuilder*) clear;
-- (RMTSimpleResponseBuilder*) clone;
-
-- (RMTSimpleResponse*) build;
-- (RMTSimpleResponse*) buildPartial;
-
-- (RMTSimpleResponseBuilder*) mergeFrom:(RMTSimpleResponse*) other;
-- (RMTSimpleResponseBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RMTSimpleResponseBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasPayload;
-- (RMTPayload*) payload;
-- (RMTSimpleResponseBuilder*) setPayload:(RMTPayload*) value;
-- (RMTSimpleResponseBuilder*) setPayloadBuilder:(RMTPayloadBuilder*) builderForValue;
-- (RMTSimpleResponseBuilder*) mergePayload:(RMTPayload*) value;
-- (RMTSimpleResponseBuilder*) clearPayload;
-
-- (BOOL) hasUsername;
-- (NSString*) username;
-- (RMTSimpleResponseBuilder*) setUsername:(NSString*) value;
-- (RMTSimpleResponseBuilder*) clearUsername;
-
-- (BOOL) hasOauthScope;
-- (NSString*) oauthScope;
-- (RMTSimpleResponseBuilder*) setOauthScope:(NSString*) value;
-- (RMTSimpleResponseBuilder*) clearOauthScope;
-@end
-
-@interface RMTStreamingInputCallRequest : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasPayload_:1;
-  RMTPayload* payload;
-}
-- (BOOL) hasPayload;
-@property (readonly, strong) RMTPayload* payload;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RMTStreamingInputCallRequestBuilder*) builder;
-+ (RMTStreamingInputCallRequestBuilder*) builder;
-+ (RMTStreamingInputCallRequestBuilder*) builderWithPrototype:(RMTStreamingInputCallRequest*) prototype;
-- (RMTStreamingInputCallRequestBuilder*) toBuilder;
-
-+ (RMTStreamingInputCallRequest*) parseFromData:(NSData*) data;
-+ (RMTStreamingInputCallRequest*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTStreamingInputCallRequest*) parseFromInputStream:(NSInputStream*) input;
-+ (RMTStreamingInputCallRequest*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTStreamingInputCallRequest*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RMTStreamingInputCallRequest*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RMTStreamingInputCallRequestBuilder : PBGeneratedMessageBuilder {
-@private
-  RMTStreamingInputCallRequest* resultStreamingInputCallRequest;
-}
-
-- (RMTStreamingInputCallRequest*) defaultInstance;
-
-- (RMTStreamingInputCallRequestBuilder*) clear;
-- (RMTStreamingInputCallRequestBuilder*) clone;
-
-- (RMTStreamingInputCallRequest*) build;
-- (RMTStreamingInputCallRequest*) buildPartial;
-
-- (RMTStreamingInputCallRequestBuilder*) mergeFrom:(RMTStreamingInputCallRequest*) other;
-- (RMTStreamingInputCallRequestBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RMTStreamingInputCallRequestBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasPayload;
-- (RMTPayload*) payload;
-- (RMTStreamingInputCallRequestBuilder*) setPayload:(RMTPayload*) value;
-- (RMTStreamingInputCallRequestBuilder*) setPayloadBuilder:(RMTPayloadBuilder*) builderForValue;
-- (RMTStreamingInputCallRequestBuilder*) mergePayload:(RMTPayload*) value;
-- (RMTStreamingInputCallRequestBuilder*) clearPayload;
-@end
-
-@interface RMTStreamingInputCallResponse : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasAggregatedPayloadSize_:1;
-  SInt32 aggregatedPayloadSize;
-}
-- (BOOL) hasAggregatedPayloadSize;
-@property (readonly) SInt32 aggregatedPayloadSize;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RMTStreamingInputCallResponseBuilder*) builder;
-+ (RMTStreamingInputCallResponseBuilder*) builder;
-+ (RMTStreamingInputCallResponseBuilder*) builderWithPrototype:(RMTStreamingInputCallResponse*) prototype;
-- (RMTStreamingInputCallResponseBuilder*) toBuilder;
-
-+ (RMTStreamingInputCallResponse*) parseFromData:(NSData*) data;
-+ (RMTStreamingInputCallResponse*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTStreamingInputCallResponse*) parseFromInputStream:(NSInputStream*) input;
-+ (RMTStreamingInputCallResponse*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTStreamingInputCallResponse*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RMTStreamingInputCallResponse*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RMTStreamingInputCallResponseBuilder : PBGeneratedMessageBuilder {
-@private
-  RMTStreamingInputCallResponse* resultStreamingInputCallResponse;
-}
-
-- (RMTStreamingInputCallResponse*) defaultInstance;
-
-- (RMTStreamingInputCallResponseBuilder*) clear;
-- (RMTStreamingInputCallResponseBuilder*) clone;
-
-- (RMTStreamingInputCallResponse*) build;
-- (RMTStreamingInputCallResponse*) buildPartial;
-
-- (RMTStreamingInputCallResponseBuilder*) mergeFrom:(RMTStreamingInputCallResponse*) other;
-- (RMTStreamingInputCallResponseBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RMTStreamingInputCallResponseBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasAggregatedPayloadSize;
-- (SInt32) aggregatedPayloadSize;
-- (RMTStreamingInputCallResponseBuilder*) setAggregatedPayloadSize:(SInt32) value;
-- (RMTStreamingInputCallResponseBuilder*) clearAggregatedPayloadSize;
-@end
-
-@interface RMTResponseParameters : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasSize_:1;
-  BOOL hasIntervalUs_:1;
-  SInt32 size;
-  SInt32 intervalUs;
-}
-- (BOOL) hasSize;
-- (BOOL) hasIntervalUs;
-@property (readonly) SInt32 size;
-@property (readonly) SInt32 intervalUs;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RMTResponseParametersBuilder*) builder;
-+ (RMTResponseParametersBuilder*) builder;
-+ (RMTResponseParametersBuilder*) builderWithPrototype:(RMTResponseParameters*) prototype;
-- (RMTResponseParametersBuilder*) toBuilder;
-
-+ (RMTResponseParameters*) parseFromData:(NSData*) data;
-+ (RMTResponseParameters*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTResponseParameters*) parseFromInputStream:(NSInputStream*) input;
-+ (RMTResponseParameters*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTResponseParameters*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RMTResponseParameters*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RMTResponseParametersBuilder : PBGeneratedMessageBuilder {
-@private
-  RMTResponseParameters* resultResponseParameters;
-}
-
-- (RMTResponseParameters*) defaultInstance;
-
-- (RMTResponseParametersBuilder*) clear;
-- (RMTResponseParametersBuilder*) clone;
-
-- (RMTResponseParameters*) build;
-- (RMTResponseParameters*) buildPartial;
-
-- (RMTResponseParametersBuilder*) mergeFrom:(RMTResponseParameters*) other;
-- (RMTResponseParametersBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RMTResponseParametersBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasSize;
-- (SInt32) size;
-- (RMTResponseParametersBuilder*) setSize:(SInt32) value;
-- (RMTResponseParametersBuilder*) clearSize;
-
-- (BOOL) hasIntervalUs;
-- (SInt32) intervalUs;
-- (RMTResponseParametersBuilder*) setIntervalUs:(SInt32) value;
-- (RMTResponseParametersBuilder*) clearIntervalUs;
-@end
-
-@interface RMTStreamingOutputCallRequest : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasPayload_:1;
-  BOOL hasResponseType_:1;
-  RMTPayload* payload;
-  RMTPayloadType responseType;
-  NSMutableArray * responseParametersArray;
-}
-- (BOOL) hasResponseType;
-- (BOOL) hasPayload;
-@property (readonly) RMTPayloadType responseType;
-@property (readonly, strong) NSArray * responseParameters;
-@property (readonly, strong) RMTPayload* payload;
-- (RMTResponseParameters*)responseParametersAtIndex:(NSUInteger)index;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RMTStreamingOutputCallRequestBuilder*) builder;
-+ (RMTStreamingOutputCallRequestBuilder*) builder;
-+ (RMTStreamingOutputCallRequestBuilder*) builderWithPrototype:(RMTStreamingOutputCallRequest*) prototype;
-- (RMTStreamingOutputCallRequestBuilder*) toBuilder;
-
-+ (RMTStreamingOutputCallRequest*) parseFromData:(NSData*) data;
-+ (RMTStreamingOutputCallRequest*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTStreamingOutputCallRequest*) parseFromInputStream:(NSInputStream*) input;
-+ (RMTStreamingOutputCallRequest*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTStreamingOutputCallRequest*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RMTStreamingOutputCallRequest*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RMTStreamingOutputCallRequestBuilder : PBGeneratedMessageBuilder {
-@private
-  RMTStreamingOutputCallRequest* resultStreamingOutputCallRequest;
-}
-
-- (RMTStreamingOutputCallRequest*) defaultInstance;
-
-- (RMTStreamingOutputCallRequestBuilder*) clear;
-- (RMTStreamingOutputCallRequestBuilder*) clone;
-
-- (RMTStreamingOutputCallRequest*) build;
-- (RMTStreamingOutputCallRequest*) buildPartial;
-
-- (RMTStreamingOutputCallRequestBuilder*) mergeFrom:(RMTStreamingOutputCallRequest*) other;
-- (RMTStreamingOutputCallRequestBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RMTStreamingOutputCallRequestBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasResponseType;
-- (RMTPayloadType) responseType;
-- (RMTStreamingOutputCallRequestBuilder*) setResponseType:(RMTPayloadType) value;
-- (RMTStreamingOutputCallRequestBuilder*) clearResponseType;
-
-- (NSMutableArray *)responseParameters;
-- (RMTResponseParameters*)responseParametersAtIndex:(NSUInteger)index;
-- (RMTStreamingOutputCallRequestBuilder *)addResponseParameters:(RMTResponseParameters*)value;
-- (RMTStreamingOutputCallRequestBuilder *)setResponseParametersArray:(NSArray *)array;
-- (RMTStreamingOutputCallRequestBuilder *)clearResponseParameters;
-
-- (BOOL) hasPayload;
-- (RMTPayload*) payload;
-- (RMTStreamingOutputCallRequestBuilder*) setPayload:(RMTPayload*) value;
-- (RMTStreamingOutputCallRequestBuilder*) setPayloadBuilder:(RMTPayloadBuilder*) builderForValue;
-- (RMTStreamingOutputCallRequestBuilder*) mergePayload:(RMTPayload*) value;
-- (RMTStreamingOutputCallRequestBuilder*) clearPayload;
-@end
-
-@interface RMTStreamingOutputCallResponse : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasPayload_:1;
-  RMTPayload* payload;
-}
-- (BOOL) hasPayload;
-@property (readonly, strong) RMTPayload* payload;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RMTStreamingOutputCallResponseBuilder*) builder;
-+ (RMTStreamingOutputCallResponseBuilder*) builder;
-+ (RMTStreamingOutputCallResponseBuilder*) builderWithPrototype:(RMTStreamingOutputCallResponse*) prototype;
-- (RMTStreamingOutputCallResponseBuilder*) toBuilder;
-
-+ (RMTStreamingOutputCallResponse*) parseFromData:(NSData*) data;
-+ (RMTStreamingOutputCallResponse*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTStreamingOutputCallResponse*) parseFromInputStream:(NSInputStream*) input;
-+ (RMTStreamingOutputCallResponse*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RMTStreamingOutputCallResponse*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RMTStreamingOutputCallResponse*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RMTStreamingOutputCallResponseBuilder : PBGeneratedMessageBuilder {
-@private
-  RMTStreamingOutputCallResponse* resultStreamingOutputCallResponse;
-}
-
-- (RMTStreamingOutputCallResponse*) defaultInstance;
-
-- (RMTStreamingOutputCallResponseBuilder*) clear;
-- (RMTStreamingOutputCallResponseBuilder*) clone;
-
-- (RMTStreamingOutputCallResponse*) build;
-- (RMTStreamingOutputCallResponse*) buildPartial;
-
-- (RMTStreamingOutputCallResponseBuilder*) mergeFrom:(RMTStreamingOutputCallResponse*) other;
-- (RMTStreamingOutputCallResponseBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RMTStreamingOutputCallResponseBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasPayload;
-- (RMTPayload*) payload;
-- (RMTStreamingOutputCallResponseBuilder*) setPayload:(RMTPayload*) value;
-- (RMTStreamingOutputCallResponseBuilder*) setPayloadBuilder:(RMTPayloadBuilder*) builderForValue;
-- (RMTStreamingOutputCallResponseBuilder*) mergePayload:(RMTPayload*) value;
-- (RMTStreamingOutputCallResponseBuilder*) clearPayload;
-@end
-
-
-// @@protoc_insertion_point(global_scope)

src/objective-c/examples/Sample/RemoteTestClient/Messages.pbobjc.h

@@ -0,0 +1,221 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: messages.proto
+
+#import "GPBProtocolBuffers.h"
+
+#if GOOGLE_PROTOBUF_OBJC_GEN_VERSION != 30000
+#error This file was generated by a different version of protoc-gen-objc which is incompatible with your Protocol Buffer sources.
+#endif
+
+CF_EXTERN_C_BEGIN
+
+@class RMTPayload;
+@class RMTResponseParameters;
+@class RMTSimpleRequest;
+@class RMTSimpleResponse;
+@class RMTStreamingInputCallRequest;
+@class RMTStreamingInputCallResponse;
+@class RMTStreamingOutputCallRequest;
+@class RMTStreamingOutputCallResponse;
+
+#pragma mark - Enum RMTPayloadType
+
+// The type of payload that should be returned.
+typedef GPB_ENUM(RMTPayloadType) {
+  RMTPayloadType_GPBUnrecognizedEnumeratorValue = kGPBUnrecognizedEnumeratorValue,
+  // Compressable text format.
+  RMTPayloadType_Compressable = 0,
+
+  // Uncompressable binary format.
+  RMTPayloadType_Uncompressable = 1,
+
+  // Randomly chosen from all other formats defined in this enum.
+  RMTPayloadType_Random = 2,
+};
+
+GPBEnumDescriptor *RMTPayloadType_EnumDescriptor(void);
+
+BOOL RMTPayloadType_IsValidValue(int32_t value);
+
+
+#pragma mark - RMTMessagesRoot
+
+@interface RMTMessagesRoot : GPBRootObject
+@end
+
+#pragma mark - RMTPayload
+
+typedef GPB_ENUM(RMTPayload_FieldNumber) {
+  RMTPayload_FieldNumber_Type = 1,
+  RMTPayload_FieldNumber_Body = 2,
+};
+
+// A block of data, to simply increase gRPC message size.
+@interface RMTPayload : GPBMessage
+
+// The type of data in body.
+@property(nonatomic, readwrite) RMTPayloadType type;
+
+// Primary contents of payload.
+@property(nonatomic, readwrite, copy) NSData *body;
+
+@end
+
+int32_t RMTPayload_Type_RawValue(RMTPayload *message);
+void SetRMTPayload_Type_RawValue(RMTPayload *message, int32_t value);
+
+#pragma mark - RMTSimpleRequest
+
+typedef GPB_ENUM(RMTSimpleRequest_FieldNumber) {
+  RMTSimpleRequest_FieldNumber_ResponseType = 1,
+  RMTSimpleRequest_FieldNumber_ResponseSize = 2,
+  RMTSimpleRequest_FieldNumber_Payload = 3,
+  RMTSimpleRequest_FieldNumber_FillUsername = 4,
+  RMTSimpleRequest_FieldNumber_FillOauthScope = 5,
+};
+
+// Unary request.
+@interface RMTSimpleRequest : GPBMessage
+
+// Desired payload type in the response from the server.
+// If response_type is RANDOM, server randomly chooses one from other formats.
+@property(nonatomic, readwrite) RMTPayloadType responseType;
+
+// Desired payload size in the response from the server.
+// If response_type is COMPRESSABLE, this denotes the size before compression.
+@property(nonatomic, readwrite) int32_t responseSize;
+
+// Optional input payload sent along with the request.
+@property(nonatomic, readwrite) BOOL hasPayload;
+@property(nonatomic, readwrite, strong) RMTPayload *payload;
+
+// Whether SimpleResponse should include username.
+@property(nonatomic, readwrite) BOOL fillUsername;
+
+// Whether SimpleResponse should include OAuth scope.
+@property(nonatomic, readwrite) BOOL fillOauthScope;
+
+@end
+
+int32_t RMTSimpleRequest_ResponseType_RawValue(RMTSimpleRequest *message);
+void SetRMTSimpleRequest_ResponseType_RawValue(RMTSimpleRequest *message, int32_t value);
+
+#pragma mark - RMTSimpleResponse
+
+typedef GPB_ENUM(RMTSimpleResponse_FieldNumber) {
+  RMTSimpleResponse_FieldNumber_Payload = 1,
+  RMTSimpleResponse_FieldNumber_Username = 2,
+  RMTSimpleResponse_FieldNumber_OauthScope = 3,
+};
+
+// Unary response, as configured by the request.
+@interface RMTSimpleResponse : GPBMessage
+
+// Payload to increase message size.
+@property(nonatomic, readwrite) BOOL hasPayload;
+@property(nonatomic, readwrite, strong) RMTPayload *payload;
+
+// The user the request came from, for verifying authentication was
+// successful when the client expected it.
+@property(nonatomic, readwrite, copy) NSString *username;
+
+// OAuth scope.
+@property(nonatomic, readwrite, copy) NSString *oauthScope;
+
+@end
+
+#pragma mark - RMTStreamingInputCallRequest
+
+typedef GPB_ENUM(RMTStreamingInputCallRequest_FieldNumber) {
+  RMTStreamingInputCallRequest_FieldNumber_Payload = 1,
+};
+
+// Client-streaming request.
+@interface RMTStreamingInputCallRequest : GPBMessage
+
+// Optional input payload sent along with the request.
+@property(nonatomic, readwrite) BOOL hasPayload;
+@property(nonatomic, readwrite, strong) RMTPayload *payload;
+
+@end
+
+#pragma mark - RMTStreamingInputCallResponse
+
+typedef GPB_ENUM(RMTStreamingInputCallResponse_FieldNumber) {
+  RMTStreamingInputCallResponse_FieldNumber_AggregatedPayloadSize = 1,
+};
+
+// Client-streaming response.
+@interface RMTStreamingInputCallResponse : GPBMessage
+
+// Aggregated size of payloads received from the client.
+@property(nonatomic, readwrite) int32_t aggregatedPayloadSize;
+
+@end
+
+#pragma mark - RMTResponseParameters
+
+typedef GPB_ENUM(RMTResponseParameters_FieldNumber) {
+  RMTResponseParameters_FieldNumber_Size = 1,
+  RMTResponseParameters_FieldNumber_IntervalUs = 2,
+};
+
+// Configuration for a particular response.
+@interface RMTResponseParameters : GPBMessage
+
+// Desired payload sizes in responses from the server.
+// If response_type is COMPRESSABLE, this denotes the size before compression.
+@property(nonatomic, readwrite) int32_t size;
+
+// Desired interval between consecutive responses in the response stream in
+// microseconds.
+@property(nonatomic, readwrite) int32_t intervalUs;
+
+@end
+
+#pragma mark - RMTStreamingOutputCallRequest
+
+typedef GPB_ENUM(RMTStreamingOutputCallRequest_FieldNumber) {
+  RMTStreamingOutputCallRequest_FieldNumber_ResponseType = 1,
+  RMTStreamingOutputCallRequest_FieldNumber_ResponseParametersArray = 2,
+  RMTStreamingOutputCallRequest_FieldNumber_Payload = 3,
+};
+
+// Server-streaming request.
+@interface RMTStreamingOutputCallRequest : GPBMessage
+
+// Desired payload type in the response from the server.
+// If response_type is RANDOM, the payload from each response in the stream
+// might be of different types. This is to simulate a mixed type of payload
+// stream.
+@property(nonatomic, readwrite) RMTPayloadType responseType;
+
+// Configuration for each expected response message.
+// |responseParametersArray| contains |RMTResponseParameters|
+@property(nonatomic, readwrite, strong) NSMutableArray *responseParametersArray;
+
+// Optional input payload sent along with the request.
+@property(nonatomic, readwrite) BOOL hasPayload;
+@property(nonatomic, readwrite, strong) RMTPayload *payload;
+
+@end
+
+int32_t RMTStreamingOutputCallRequest_ResponseType_RawValue(RMTStreamingOutputCallRequest *message);
+void SetRMTStreamingOutputCallRequest_ResponseType_RawValue(RMTStreamingOutputCallRequest *message, int32_t value);
+
+#pragma mark - RMTStreamingOutputCallResponse
+
+typedef GPB_ENUM(RMTStreamingOutputCallResponse_FieldNumber) {
+  RMTStreamingOutputCallResponse_FieldNumber_Payload = 1,
+};
+
+// Server-streaming response, as configured by the request and parameters.
+@interface RMTStreamingOutputCallResponse : GPBMessage
+
+// Payload to increase response size.
+@property(nonatomic, readwrite) BOOL hasPayload;
+@property(nonatomic, readwrite, strong) RMTPayload *payload;
+
+@end
+
+CF_EXTERN_C_END

src/objective-c/examples/Sample/RemoteTestClient/Messages.pbobjc.m

@@ -0,0 +1,603 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: messages.proto
+
+#import "GPBProtocolBuffers_RuntimeSupport.h"
+
+#import "Messages.pbobjc.h"
+
+#pragma mark - RMTMessagesRoot
+
+@implementation RMTMessagesRoot
+
+@end
+
+static GPBFileDescriptor *RMTMessagesRoot_FileDescriptor(void) {
+  // This is called by +initialize so there is no need to worry
+  // about thread safety of the singleton.
+  static GPBFileDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    descriptor = [[GPBFileDescriptor alloc] initWithPackage:@"grpc.testing"
+                                                     syntax:GPBFileSyntaxProto3];
+  }
+  return descriptor;
+}
+
+#pragma mark - Enum RMTPayloadType
+
+GPBEnumDescriptor *RMTPayloadType_EnumDescriptor(void) {
+  static GPBEnumDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageEnumValueDescription values[] = {
+      { .name = "Compressable", .number = RMTPayloadType_Compressable },
+      { .name = "Uncompressable", .number = RMTPayloadType_Uncompressable },
+      { .name = "Random", .number = RMTPayloadType_Random },
+    };
+    descriptor = [GPBEnumDescriptor allocDescriptorForName:GPBNSStringifySymbol(RMTPayloadType)
+                                                   values:values
+                                               valueCount:sizeof(values) / sizeof(GPBMessageEnumValueDescription)
+                                             enumVerifier:RMTPayloadType_IsValidValue];
+  }
+  return descriptor;
+}
+
+BOOL RMTPayloadType_IsValidValue(int32_t value__) {
+  switch (value__) {
+    case RMTPayloadType_Compressable:
+    case RMTPayloadType_Uncompressable:
+    case RMTPayloadType_Random:
+      return YES;
+    default:
+      return NO;
+  }
+}
+
+#pragma mark - RMTPayload
+
+@implementation RMTPayload
+
+@dynamic type;
+@dynamic body;
+
+typedef struct RMTPayload_Storage {
+  uint32_t _has_storage_[1];
+  RMTPayloadType type;
+  NSData *body;
+} RMTPayload_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "type",
+        .number = RMTPayload_FieldNumber_Type,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional | GPBFieldHasEnumDescriptor,
+        .type = GPBTypeEnum,
+        .offset = offsetof(RMTPayload_Storage, type),
+        .defaultValue.valueEnum = RMTPayloadType_Compressable,
+        .typeSpecific.enumDescFunc = RMTPayloadType_EnumDescriptor,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "body",
+        .number = RMTPayload_FieldNumber_Body,
+        .hasIndex = 1,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeData,
+        .offset = offsetof(RMTPayload_Storage, body),
+        .defaultValue.valueData = nil,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RMTPayload class]
+                                              rootClass:[RMTMessagesRoot class]
+                                                   file:RMTMessagesRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RMTPayload_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+int32_t RMTPayload_Type_RawValue(RMTPayload *message) {
+  GPBDescriptor *descriptor = [RMTPayload descriptor];
+  GPBFieldDescriptor *field = [descriptor fieldWithNumber:RMTPayload_FieldNumber_Type];
+  return GPBGetInt32IvarWithField(message, field);
+}
+
+void SetRMTPayload_Type_RawValue(RMTPayload *message, int32_t value) {
+  GPBDescriptor *descriptor = [RMTPayload descriptor];
+  GPBFieldDescriptor *field = [descriptor fieldWithNumber:RMTPayload_FieldNumber_Type];
+  GPBSetInt32IvarWithFieldInternal(message, field, value, descriptor.file.syntax);
+}
+
+#pragma mark - RMTSimpleRequest
+
+@implementation RMTSimpleRequest
+
+@dynamic responseType;
+@dynamic responseSize;
+@dynamic hasPayload, payload;
+@dynamic fillUsername;
+@dynamic fillOauthScope;
+
+typedef struct RMTSimpleRequest_Storage {
+  uint32_t _has_storage_[1];
+  BOOL fillUsername;
+  BOOL fillOauthScope;
+  RMTPayloadType responseType;
+  int32_t responseSize;
+  RMTPayload *payload;
+} RMTSimpleRequest_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "responseType",
+        .number = RMTSimpleRequest_FieldNumber_ResponseType,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional | GPBFieldHasEnumDescriptor,
+        .type = GPBTypeEnum,
+        .offset = offsetof(RMTSimpleRequest_Storage, responseType),
+        .defaultValue.valueEnum = RMTPayloadType_Compressable,
+        .typeSpecific.enumDescFunc = RMTPayloadType_EnumDescriptor,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "responseSize",
+        .number = RMTSimpleRequest_FieldNumber_ResponseSize,
+        .hasIndex = 1,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RMTSimpleRequest_Storage, responseSize),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "payload",
+        .number = RMTSimpleRequest_FieldNumber_Payload,
+        .hasIndex = 2,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RMTSimpleRequest_Storage, payload),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RMTPayload),
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "fillUsername",
+        .number = RMTSimpleRequest_FieldNumber_FillUsername,
+        .hasIndex = 3,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeBool,
+        .offset = offsetof(RMTSimpleRequest_Storage, fillUsername),
+        .defaultValue.valueBool = NO,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "fillOauthScope",
+        .number = RMTSimpleRequest_FieldNumber_FillOauthScope,
+        .hasIndex = 4,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeBool,
+        .offset = offsetof(RMTSimpleRequest_Storage, fillOauthScope),
+        .defaultValue.valueBool = NO,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RMTSimpleRequest class]
+                                              rootClass:[RMTMessagesRoot class]
+                                                   file:RMTMessagesRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RMTSimpleRequest_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+int32_t RMTSimpleRequest_ResponseType_RawValue(RMTSimpleRequest *message) {
+  GPBDescriptor *descriptor = [RMTSimpleRequest descriptor];
+  GPBFieldDescriptor *field = [descriptor fieldWithNumber:RMTSimpleRequest_FieldNumber_ResponseType];
+  return GPBGetInt32IvarWithField(message, field);
+}
+
+void SetRMTSimpleRequest_ResponseType_RawValue(RMTSimpleRequest *message, int32_t value) {
+  GPBDescriptor *descriptor = [RMTSimpleRequest descriptor];
+  GPBFieldDescriptor *field = [descriptor fieldWithNumber:RMTSimpleRequest_FieldNumber_ResponseType];
+  GPBSetInt32IvarWithFieldInternal(message, field, value, descriptor.file.syntax);
+}
+
+#pragma mark - RMTSimpleResponse
+
+@implementation RMTSimpleResponse
+
+@dynamic hasPayload, payload;
+@dynamic username;
+@dynamic oauthScope;
+
+typedef struct RMTSimpleResponse_Storage {
+  uint32_t _has_storage_[1];
+  RMTPayload *payload;
+  NSString *username;
+  NSString *oauthScope;
+} RMTSimpleResponse_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "payload",
+        .number = RMTSimpleResponse_FieldNumber_Payload,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RMTSimpleResponse_Storage, payload),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RMTPayload),
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "username",
+        .number = RMTSimpleResponse_FieldNumber_Username,
+        .hasIndex = 1,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeString,
+        .offset = offsetof(RMTSimpleResponse_Storage, username),
+        .defaultValue.valueString = nil,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "oauthScope",
+        .number = RMTSimpleResponse_FieldNumber_OauthScope,
+        .hasIndex = 2,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeString,
+        .offset = offsetof(RMTSimpleResponse_Storage, oauthScope),
+        .defaultValue.valueString = nil,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RMTSimpleResponse class]
+                                              rootClass:[RMTMessagesRoot class]
+                                                   file:RMTMessagesRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RMTSimpleResponse_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+#pragma mark - RMTStreamingInputCallRequest
+
+@implementation RMTStreamingInputCallRequest
+
+@dynamic hasPayload, payload;
+
+typedef struct RMTStreamingInputCallRequest_Storage {
+  uint32_t _has_storage_[1];
+  RMTPayload *payload;
+} RMTStreamingInputCallRequest_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "payload",
+        .number = RMTStreamingInputCallRequest_FieldNumber_Payload,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RMTStreamingInputCallRequest_Storage, payload),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RMTPayload),
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RMTStreamingInputCallRequest class]
+                                              rootClass:[RMTMessagesRoot class]
+                                                   file:RMTMessagesRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RMTStreamingInputCallRequest_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+#pragma mark - RMTStreamingInputCallResponse
+
+@implementation RMTStreamingInputCallResponse
+
+@dynamic aggregatedPayloadSize;
+
+typedef struct RMTStreamingInputCallResponse_Storage {
+  uint32_t _has_storage_[1];
+  int32_t aggregatedPayloadSize;
+} RMTStreamingInputCallResponse_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "aggregatedPayloadSize",
+        .number = RMTStreamingInputCallResponse_FieldNumber_AggregatedPayloadSize,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RMTStreamingInputCallResponse_Storage, aggregatedPayloadSize),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RMTStreamingInputCallResponse class]
+                                              rootClass:[RMTMessagesRoot class]
+                                                   file:RMTMessagesRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RMTStreamingInputCallResponse_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+#pragma mark - RMTResponseParameters
+
+@implementation RMTResponseParameters
+
+@dynamic size;
+@dynamic intervalUs;
+
+typedef struct RMTResponseParameters_Storage {
+  uint32_t _has_storage_[1];
+  int32_t size;
+  int32_t intervalUs;
+} RMTResponseParameters_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "size",
+        .number = RMTResponseParameters_FieldNumber_Size,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RMTResponseParameters_Storage, size),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "intervalUs",
+        .number = RMTResponseParameters_FieldNumber_IntervalUs,
+        .hasIndex = 1,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RMTResponseParameters_Storage, intervalUs),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RMTResponseParameters class]
+                                              rootClass:[RMTMessagesRoot class]
+                                                   file:RMTMessagesRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RMTResponseParameters_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+#pragma mark - RMTStreamingOutputCallRequest
+
+@implementation RMTStreamingOutputCallRequest
+
+@dynamic responseType;
+@dynamic responseParametersArray;
+@dynamic hasPayload, payload;
+
+typedef struct RMTStreamingOutputCallRequest_Storage {
+  uint32_t _has_storage_[1];
+  RMTPayloadType responseType;
+  NSMutableArray *responseParametersArray;
+  RMTPayload *payload;
+} RMTStreamingOutputCallRequest_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "responseType",
+        .number = RMTStreamingOutputCallRequest_FieldNumber_ResponseType,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional | GPBFieldHasEnumDescriptor,
+        .type = GPBTypeEnum,
+        .offset = offsetof(RMTStreamingOutputCallRequest_Storage, responseType),
+        .defaultValue.valueEnum = RMTPayloadType_Compressable,
+        .typeSpecific.enumDescFunc = RMTPayloadType_EnumDescriptor,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "responseParametersArray",
+        .number = RMTStreamingOutputCallRequest_FieldNumber_ResponseParametersArray,
+        .hasIndex = GPBNoHasBit,
+        .flags = GPBFieldRepeated,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RMTStreamingOutputCallRequest_Storage, responseParametersArray),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RMTResponseParameters),
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "payload",
+        .number = RMTStreamingOutputCallRequest_FieldNumber_Payload,
+        .hasIndex = 2,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RMTStreamingOutputCallRequest_Storage, payload),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RMTPayload),
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RMTStreamingOutputCallRequest class]
+                                              rootClass:[RMTMessagesRoot class]
+                                                   file:RMTMessagesRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RMTStreamingOutputCallRequest_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+int32_t RMTStreamingOutputCallRequest_ResponseType_RawValue(RMTStreamingOutputCallRequest *message) {
+  GPBDescriptor *descriptor = [RMTStreamingOutputCallRequest descriptor];
+  GPBFieldDescriptor *field = [descriptor fieldWithNumber:RMTStreamingOutputCallRequest_FieldNumber_ResponseType];
+  return GPBGetInt32IvarWithField(message, field);
+}
+
+void SetRMTStreamingOutputCallRequest_ResponseType_RawValue(RMTStreamingOutputCallRequest *message, int32_t value) {
+  GPBDescriptor *descriptor = [RMTStreamingOutputCallRequest descriptor];
+  GPBFieldDescriptor *field = [descriptor fieldWithNumber:RMTStreamingOutputCallRequest_FieldNumber_ResponseType];
+  GPBSetInt32IvarWithFieldInternal(message, field, value, descriptor.file.syntax);
+}
+
+#pragma mark - RMTStreamingOutputCallResponse
+
+@implementation RMTStreamingOutputCallResponse
+
+@dynamic hasPayload, payload;
+
+typedef struct RMTStreamingOutputCallResponse_Storage {
+  uint32_t _has_storage_[1];
+  RMTPayload *payload;
+} RMTStreamingOutputCallResponse_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "payload",
+        .number = RMTStreamingOutputCallResponse_FieldNumber_Payload,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RMTStreamingOutputCallResponse_Storage, payload),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RMTPayload),
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RMTStreamingOutputCallResponse class]
+                                              rootClass:[RMTMessagesRoot class]
+                                                   file:RMTMessagesRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RMTStreamingOutputCallResponse_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+

src/objective-c/examples/Sample/RemoteTestClient/RemoteTest.podspec

@@ -6,13 +6,19 @@ Pod::Spec.new do |s|
   s.license  = 'New BSD'
   s.authors  = { 'Jorge Canizales' => 'jcanizales@google.com' }
 
-  s.source_files = '*.pb.{h,m}'
-  s.public_header_files = '*.pb.h'
-
-  s.platform = :ios
   s.ios.deployment_target = '6.0'
-  s.requires_arc = true
+  s.osx.deployment_target = '10.8'
+
+  s.subspec 'Messages' do |ms|
+    ms.source_files = '*.pbobjc.{h,m}'
+    ms.requires_arc = false
+    ms.dependency 'Protobuf', '~> 3.0'
+  end
 
-  s.dependency 'ProtocolBuffers', '~> 1.9'
-  s.dependency 'gRPC', '~> 0.0'
+  s.subspec 'Services' do |ss|
+    ss.source_files = '*.pbrpc.{h,m}'
+    ss.requires_arc = true
+    ss.dependency 'gRPC', '~> 0.0'
+    ss.dependency 'RemoteTest/Messages'
+  end
 end

src/objective-c/examples/Sample/RemoteTestClient/Test.pb.h

@@ -1,167 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-
-#import <ProtocolBuffers/ProtocolBuffers.h>
-
-#import "Empty.pb.h"
-#import "Messages.pb.h"
-#import <gRPC/ProtoService.h>
-// @@protoc_insertion_point(imports)
-
-@class ObjectiveCFileOptions;
-@class ObjectiveCFileOptionsBuilder;
-@class PBDescriptorProto;
-@class PBDescriptorProtoBuilder;
-@class PBDescriptorProtoExtensionRange;
-@class PBDescriptorProtoExtensionRangeBuilder;
-@class PBEnumDescriptorProto;
-@class PBEnumDescriptorProtoBuilder;
-@class PBEnumOptions;
-@class PBEnumOptionsBuilder;
-@class PBEnumValueDescriptorProto;
-@class PBEnumValueDescriptorProtoBuilder;
-@class PBEnumValueOptions;
-@class PBEnumValueOptionsBuilder;
-@class PBFieldDescriptorProto;
-@class PBFieldDescriptorProtoBuilder;
-@class PBFieldOptions;
-@class PBFieldOptionsBuilder;
-@class PBFileDescriptorProto;
-@class PBFileDescriptorProtoBuilder;
-@class PBFileDescriptorSet;
-@class PBFileDescriptorSetBuilder;
-@class PBFileOptions;
-@class PBFileOptionsBuilder;
-@class PBMessageOptions;
-@class PBMessageOptionsBuilder;
-@class PBMethodDescriptorProto;
-@class PBMethodDescriptorProtoBuilder;
-@class PBMethodOptions;
-@class PBMethodOptionsBuilder;
-@class PBOneofDescriptorProto;
-@class PBOneofDescriptorProtoBuilder;
-@class PBServiceDescriptorProto;
-@class PBServiceDescriptorProtoBuilder;
-@class PBServiceOptions;
-@class PBServiceOptionsBuilder;
-@class PBSourceCodeInfo;
-@class PBSourceCodeInfoBuilder;
-@class PBSourceCodeInfoLocation;
-@class PBSourceCodeInfoLocationBuilder;
-@class PBUninterpretedOption;
-@class PBUninterpretedOptionBuilder;
-@class PBUninterpretedOptionNamePart;
-@class PBUninterpretedOptionNamePartBuilder;
-@class RMTEmpty;
-@class RMTEmptyBuilder;
-@class RMTPayload;
-@class RMTPayloadBuilder;
-@class RMTResponseParameters;
-@class RMTResponseParametersBuilder;
-@class RMTSimpleRequest;
-@class RMTSimpleRequestBuilder;
-@class RMTSimpleResponse;
-@class RMTSimpleResponseBuilder;
-@class RMTStreamingInputCallRequest;
-@class RMTStreamingInputCallRequestBuilder;
-@class RMTStreamingInputCallResponse;
-@class RMTStreamingInputCallResponseBuilder;
-@class RMTStreamingOutputCallRequest;
-@class RMTStreamingOutputCallRequestBuilder;
-@class RMTStreamingOutputCallResponse;
-@class RMTStreamingOutputCallResponseBuilder;
-
-
-
-@interface RMTTestRoot : NSObject {
-}
-+ (PBExtensionRegistry*) extensionRegistry;
-+ (void) registerAllExtensions:(PBMutableExtensionRegistry*) registry;
-@end
-
-
-
-@protocol GRXWriteable;
-@protocol GRXWriter;
-
-@protocol RMTTestService <NSObject>
-
-#pragma mark EmptyCall(grpc.testing.Empty) returns (grpc.testing.Empty)
-
-// One empty request followed by one empty response.
-- (void)emptyCallWithRequest:(RMTEmpty *)request
-                     handler:(void(^)(RMTEmpty *response, NSError *error))handler;
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToEmptyCallWithRequest:(RMTEmpty *)request
-                                handler:(void(^)(RMTEmpty *response, NSError *error))handler;
-
-
-#pragma mark UnaryCall(SimpleRequest) returns (SimpleResponse)
-
-// One request followed by one response.
-- (void)unaryCallWithRequest:(RMTSimpleRequest *)request
-                     handler:(void(^)(RMTSimpleResponse *response, NSError *error))handler;
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToUnaryCallWithRequest:(RMTSimpleRequest *)request
-                                handler:(void(^)(RMTSimpleResponse *response, NSError *error))handler;
-
-
-#pragma mark StreamingOutputCall(StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
-
-// One request followed by a sequence of responses (streamed download).
-// The server returns the payload with client desired type and sizes.
-- (void)streamingOutputCallWithRequest:(RMTStreamingOutputCallRequest *)request
-                               handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToStreamingOutputCallWithRequest:(RMTStreamingOutputCallRequest *)request
-                                          handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
-
-
-#pragma mark StreamingInputCall(stream StreamingInputCallRequest) returns (StreamingInputCallResponse)
-
-// A sequence of requests followed by one response (streamed upload).
-// The server returns the aggregated size of client payload as the result.
-- (void)streamingInputCallWithRequestsWriter:(id<GRXWriter>)request
-                                     handler:(void(^)(RMTStreamingInputCallResponse *response, NSError *error))handler;
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToStreamingInputCallWithRequestsWriter:(id<GRXWriter>)request
-                                                handler:(void(^)(RMTStreamingInputCallResponse *response, NSError *error))handler;
-
-
-#pragma mark FullDuplexCall(stream StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
-
-// A sequence of requests with each request served by the server immediately.
-// As one request could lead to multiple responses, this interface
-// demonstrates the idea of full duplexing.
-- (void)fullDuplexCallWithRequestsWriter:(id<GRXWriter>)request
-                                 handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToFullDuplexCallWithRequestsWriter:(id<GRXWriter>)request
-                                            handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
-
-
-#pragma mark HalfDuplexCall(stream StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
-
-// A sequence of requests followed by a sequence of responses.
-// The server buffers all the client requests and then serves them in order. A
-// stream of responses are returned to the client when the server starts with
-// first request.
-- (void)halfDuplexCallWithRequestsWriter:(id<GRXWriter>)request
-                                 handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToHalfDuplexCallWithRequestsWriter:(id<GRXWriter>)request
-                                            handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
-
-@end
-
-// Basic service implementation, over gRPC, that only does marshalling and parsing.
-@interface RMTTestService : ProtoService<RMTTestService>
-- (instancetype)initWithHost:(NSString *)host NS_DESIGNATED_INITIALIZER;
-@end
-
-// @@protoc_insertion_point(global_scope)

src/objective-c/examples/Sample/RemoteTestClient/Test.pb.m

@@ -1,163 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-
-#import "Test.pb.h"
-
-#import <gRPC/GRXWriteable.h>
-#import <gRPC/GRXWriter+Immediate.h>
-#import <gRPC/ProtoRPC.h>
-// @@protoc_insertion_point(imports)
-
-@implementation RMTTestRoot
-static PBExtensionRegistry* extensionRegistry = nil;
-+ (PBExtensionRegistry*) extensionRegistry {
-  return extensionRegistry;
-}
-
-+ (void) initialize {
-  if (self == [RMTTestRoot class]) {
-    PBMutableExtensionRegistry* registry = [PBMutableExtensionRegistry registry];
-    [self registerAllExtensions:registry];
-    [RMTEmptyRoot registerAllExtensions:registry];
-    [RMTMessagesRoot registerAllExtensions:registry];
-    [ObjectivecDescriptorRoot registerAllExtensions:registry];
-    extensionRegistry = registry;
-  }
-}
-+ (void) registerAllExtensions:(PBMutableExtensionRegistry*) registry {
-}
-@end
-
-
-static NSString *const kPackageName = @"grpc.testing";
-static NSString *const kServiceName = @"TestService";
-
-@implementation RMTTestService
-
-// Designated initializer
-- (instancetype)initWithHost:(NSString *)host {
-  return (self = [super initWithHost:host packageName:kPackageName serviceName:kServiceName]);
-}
-
-- (instancetype)initWithHost:(NSString *)host
-                 packageName:(NSString *)packageName
-                 serviceName:(NSString *)serviceName {
-  return [self initWithHost:host];
-}
-
-#pragma mark EmptyCall(grpc.testing.Empty) returns (grpc.testing.Empty)
-
-// One empty request followed by one empty response.
-- (void)emptyCallWithRequest:(RMTEmpty *)request
-                     handler:(void(^)(RMTEmpty *response, NSError *error))handler {
-  [[self RPCToEmptyCallWithRequest:request handler:handler] start];
-}
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToEmptyCallWithRequest:(RMTEmpty *)request
-                                handler:(void(^)(RMTEmpty *response, NSError *error))handler {
-  return [self RPCToMethod:@"EmptyCall"
-            requestsWriter:[GRXWriter writerWithValue:request]
-             responseClass:[RMTEmpty class]
-        responsesWriteable:[GRXWriteable writeableWithSingleValueHandler:handler]];
-}
-
-
-#pragma mark UnaryCall(SimpleRequest) returns (SimpleResponse)
-
-// One request followed by one response.
-- (void)unaryCallWithRequest:(RMTSimpleRequest *)request
-                     handler:(void(^)(RMTSimpleResponse *response, NSError *error))handler {
-  [[self RPCToUnaryCallWithRequest:request handler:handler] start];
-}
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToUnaryCallWithRequest:(RMTSimpleRequest *)request
-                                handler:(void(^)(RMTSimpleResponse *response, NSError *error))handler {
-  return [self RPCToMethod:@"UnaryCall"
-            requestsWriter:[GRXWriter writerWithValue:request]
-             responseClass:[RMTSimpleResponse class]
-        responsesWriteable:[GRXWriteable writeableWithSingleValueHandler:handler]];
-}
-
-
-#pragma mark StreamingOutputCall(StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
-
-// One request followed by a sequence of responses (streamed download).
-// The server returns the payload with client desired type and sizes.
-- (void)streamingOutputCallWithRequest:(RMTStreamingOutputCallRequest *)request
-                               handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler {
-  [[self RPCToStreamingOutputCallWithRequest:request handler:handler] start];
-}
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToStreamingOutputCallWithRequest:(RMTStreamingOutputCallRequest *)request
-                                          handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler {
-  return [self RPCToMethod:@"StreamingOutputCall"
-            requestsWriter:[GRXWriter writerWithValue:request]
-             responseClass:[RMTStreamingOutputCallResponse class]
-        responsesWriteable:[GRXWriteable writeableWithStreamHandler:handler]];
-}
-
-
-#pragma mark StreamingInputCall(stream StreamingInputCallRequest) returns (StreamingInputCallResponse)
-
-// A sequence of requests followed by one response (streamed upload).
-// The server returns the aggregated size of client payload as the result.
-- (void)streamingInputCallWithRequestsWriter:(id<GRXWriter>)requestsWriter
-                                     handler:(void(^)(RMTStreamingInputCallResponse *response, NSError *error))handler {
-  [[self RPCToStreamingInputCallWithRequestsWriter:requestsWriter handler:handler] start];
-}
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToStreamingInputCallWithRequestsWriter:(id<GRXWriter>)requestsWriter
-                                                handler:(void(^)(RMTStreamingInputCallResponse *response, NSError *error))handler {
-  return [self RPCToMethod:@"StreamingInputCall"
-            requestsWriter:requestsWriter
-             responseClass:[RMTStreamingInputCallResponse class]
-        responsesWriteable:[GRXWriteable writeableWithSingleValueHandler:handler]];
-}
-
-
-#pragma mark FullDuplexCall(stream StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
-
-// A sequence of requests with each request served by the server immediately.
-// As one request could lead to multiple responses, this interface
-// demonstrates the idea of full duplexing.
-- (void)fullDuplexCallWithRequestsWriter:(id<GRXWriter>)requestsWriter
-                                 handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler {
-  [[self RPCToFullDuplexCallWithRequestsWriter:requestsWriter handler:handler] start];
-}
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToFullDuplexCallWithRequestsWriter:(id<GRXWriter>)requestsWriter
-                                            handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler {
-  return [self RPCToMethod:@"FullDuplexCall"
-            requestsWriter:requestsWriter
-             responseClass:[RMTStreamingOutputCallResponse class]
-        responsesWriteable:[GRXWriteable writeableWithStreamHandler:handler]];
-}
-
-
-#pragma mark HalfDuplexCall(stream StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
-
-// A sequence of requests followed by a sequence of responses.
-// The server buffers all the client requests and then serves them in order. A
-// stream of responses are returned to the client when the server starts with
-// first request.
-- (void)halfDuplexCallWithRequestsWriter:(id<GRXWriter>)requestsWriter
-                                 handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler {
-  [[self RPCToHalfDuplexCallWithRequestsWriter:requestsWriter handler:handler] start];
-}
-
-// Returns a not-yet-started RPC object.
-- (ProtoRPC *)RPCToHalfDuplexCallWithRequestsWriter:(id<GRXWriter>)requestsWriter
-                                            handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler {
-  return [self RPCToMethod:@"HalfDuplexCall"
-            requestsWriter:requestsWriter
-             responseClass:[RMTStreamingOutputCallResponse class]
-        responsesWriteable:[GRXWriteable writeableWithStreamHandler:handler]];
-}
-
-@end
-
-// @@protoc_insertion_point(global_scope)

src/objective-c/examples/Sample/RemoteTestClient/Test.pbobjc.h

@@ -0,0 +1,12 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: test.proto
+
+#import "GPBProtocolBuffers.h"
+
+#if GOOGLE_PROTOBUF_OBJC_GEN_VERSION != 30000
+#error This file was generated by a different version of protoc-gen-objc which is incompatible with your Protocol Buffer sources.
+#endif
+
+CF_EXTERN_C_BEGIN
+
+CF_EXTERN_C_END

src/objective-c/examples/Sample/RemoteTestClient/Test.pbobjc.m

@@ -0,0 +1,9 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: test.proto
+
+// File empty because all messages, extensions and enum have been filtered.
+
+
+// Dummy symbol that will be stripped but will avoid linker warnings about
+// no symbols in the .o form compiling this file.
+static int RMTTestRoot_dummy __attribute__((unused,used)) = 0;

src/objective-c/examples/Sample/RemoteTestClient/Test.pbrpc.h

@@ -0,0 +1,59 @@
+#import "Test.pbobjc.h"
+#import <gRPC/ProtoService.h>
+
+#import "Empty.pbobjc.h"
+#import "Messages.pbobjc.h"
+
+@protocol GRXWriteable;
+@protocol GRXWriter;
+
+@protocol RMTTestService <NSObject>
+
+#pragma mark EmptyCall(Empty) returns (Empty)
+
+- (void)emptyCallWithRequest:(RMTEmpty *)request handler:(void(^)(RMTEmpty *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToEmptyCallWithRequest:(RMTEmpty *)request handler:(void(^)(RMTEmpty *response, NSError *error))handler;
+
+
+#pragma mark UnaryCall(SimpleRequest) returns (SimpleResponse)
+
+- (void)unaryCallWithRequest:(RMTSimpleRequest *)request handler:(void(^)(RMTSimpleResponse *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToUnaryCallWithRequest:(RMTSimpleRequest *)request handler:(void(^)(RMTSimpleResponse *response, NSError *error))handler;
+
+
+#pragma mark StreamingOutputCall(StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
+
+- (void)streamingOutputCallWithRequest:(RMTStreamingOutputCallRequest *)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToStreamingOutputCallWithRequest:(RMTStreamingOutputCallRequest *)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
+
+
+#pragma mark StreamingInputCall(stream StreamingInputCallRequest) returns (StreamingInputCallResponse)
+
+- (void)streamingInputCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(RMTStreamingInputCallResponse *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToStreamingInputCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(RMTStreamingInputCallResponse *response, NSError *error))handler;
+
+
+#pragma mark FullDuplexCall(stream StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
+
+- (void)fullDuplexCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToFullDuplexCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
+
+
+#pragma mark HalfDuplexCall(stream StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
+
+- (void)halfDuplexCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToHalfDuplexCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler;
+
+
+@end
+
+// Basic service implementation, over gRPC, that only does marshalling and parsing.
+@interface RMTTestService : ProtoService<RMTTestService>
+- (instancetype)initWithHost:(NSString *)host NS_DESIGNATED_INITIALIZER;
+@end

src/objective-c/examples/Sample/RemoteTestClient/Test.pbrpc.m

@@ -0,0 +1,96 @@
+#import "Test.pbrpc.h"
+#import <gRPC/GRXWriteable.h>
+#import <gRPC/GRXWriter+Immediate.h>
+#import <gRPC/ProtoRPC.h>
+
+static NSString *const kPackageName = @"grpc.testing";
+static NSString *const kServiceName = @"TestService";
+
+@implementation RMTTestService
+
+// Designated initializer
+- (instancetype)initWithHost:(NSString *)host {
+  return (self = [super initWithHost:host packageName:kPackageName serviceName:kServiceName]);
+}
+
+// Override superclass initializer to disallow different package and service names.
+- (instancetype)initWithHost:(NSString *)host
+                 packageName:(NSString *)packageName
+                 serviceName:(NSString *)serviceName {
+  return [self initWithHost:host];
+}
+
+
+#pragma mark EmptyCall(Empty) returns (Empty)
+
+- (void)emptyCallWithRequest:(RMTEmpty *)request handler:(void(^)(RMTEmpty *response, NSError *error))handler{
+  [[self RPCToEmptyCallWithRequest:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToEmptyCallWithRequest:(RMTEmpty *)request handler:(void(^)(RMTEmpty *response, NSError *error))handler{
+  return [self RPCToMethod:@"EmptyCall"
+            requestsWriter:[GRXWriter writerWithValue:request]
+             responseClass:[RMTEmpty class]
+        responsesWriteable:[GRXWriteable writeableWithSingleValueHandler:handler]];
+}
+#pragma mark UnaryCall(SimpleRequest) returns (SimpleResponse)
+
+- (void)unaryCallWithRequest:(RMTSimpleRequest *)request handler:(void(^)(RMTSimpleResponse *response, NSError *error))handler{
+  [[self RPCToUnaryCallWithRequest:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToUnaryCallWithRequest:(RMTSimpleRequest *)request handler:(void(^)(RMTSimpleResponse *response, NSError *error))handler{
+  return [self RPCToMethod:@"UnaryCall"
+            requestsWriter:[GRXWriter writerWithValue:request]
+             responseClass:[RMTSimpleResponse class]
+        responsesWriteable:[GRXWriteable writeableWithSingleValueHandler:handler]];
+}
+#pragma mark StreamingOutputCall(StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
+
+- (void)streamingOutputCallWithRequest:(RMTStreamingOutputCallRequest *)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler{
+  [[self RPCToStreamingOutputCallWithRequest:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToStreamingOutputCallWithRequest:(RMTStreamingOutputCallRequest *)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler{
+  return [self RPCToMethod:@"StreamingOutputCall"
+            requestsWriter:[GRXWriter writerWithValue:request]
+             responseClass:[RMTStreamingOutputCallResponse class]
+        responsesWriteable:[GRXWriteable writeableWithStreamHandler:handler]];
+}
+#pragma mark StreamingInputCall(stream StreamingInputCallRequest) returns (StreamingInputCallResponse)
+
+- (void)streamingInputCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(RMTStreamingInputCallResponse *response, NSError *error))handler{
+  [[self RPCToStreamingInputCallWithRequestsWriter:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToStreamingInputCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(RMTStreamingInputCallResponse *response, NSError *error))handler{
+  return [self RPCToMethod:@"StreamingInputCall"
+            requestsWriter:request
+             responseClass:[RMTStreamingInputCallResponse class]
+        responsesWriteable:[GRXWriteable writeableWithSingleValueHandler:handler]];
+}
+#pragma mark FullDuplexCall(stream StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
+
+- (void)fullDuplexCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler{
+  [[self RPCToFullDuplexCallWithRequestsWriter:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToFullDuplexCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler{
+  return [self RPCToMethod:@"FullDuplexCall"
+            requestsWriter:request
+             responseClass:[RMTStreamingOutputCallResponse class]
+        responsesWriteable:[GRXWriteable writeableWithStreamHandler:handler]];
+}
+#pragma mark HalfDuplexCall(stream StreamingOutputCallRequest) returns (stream StreamingOutputCallResponse)
+
+- (void)halfDuplexCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler{
+  [[self RPCToHalfDuplexCallWithRequestsWriter:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToHalfDuplexCallWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error))handler{
+  return [self RPCToMethod:@"HalfDuplexCall"
+            requestsWriter:request
+             responseClass:[RMTStreamingOutputCallResponse class]
+        responsesWriteable:[GRXWriteable writeableWithStreamHandler:handler]];
+}
+@end

src/objective-c/examples/Sample/RemoteTestClient/empty.proto

@@ -27,13 +27,11 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-syntax = "proto2";
-
-import "google/protobuf/objectivec-descriptor.proto";
+syntax = "proto3";
 
 package grpc.testing;
 
-option (google.protobuf.objectivec_file_options).class_prefix = "RMT";
+option objc_class_prefix = "RMT";
 
 // An empty message that you can re-use to avoid defining duplicated empty
 // messages in your project. A typical example is to use it as argument or the

src/objective-c/examples/Sample/RemoteTestClient/messages.proto

@@ -29,13 +29,11 @@
 
 // Message definitions to be used by integration test service definitions.
 
-syntax = "proto2";
-
-import "google/protobuf/objectivec-descriptor.proto";
+syntax = "proto3";
 
 package grpc.testing;
 
-option (google.protobuf.objectivec_file_options).class_prefix = "RMT";
+option objc_class_prefix = "RMT";
 
 // The type of payload that should be returned.
 enum PayloadType {
@@ -52,46 +50,46 @@ enum PayloadType {
 // A block of data, to simply increase gRPC message size.
 message Payload {
   // The type of data in body.
-  optional PayloadType type = 1;
+  PayloadType type = 1;
   // Primary contents of payload.
-  optional bytes body = 2;
+  bytes body = 2;
 }
 
 // Unary request.
 message SimpleRequest {
   // Desired payload type in the response from the server.
   // If response_type is RANDOM, server randomly chooses one from other formats.
-  optional PayloadType response_type = 1;
+  PayloadType response_type = 1;
 
   // Desired payload size in the response from the server.
   // If response_type is COMPRESSABLE, this denotes the size before compression.
-  optional int32 response_size = 2;
+  int32 response_size = 2;
 
   // Optional input payload sent along with the request.
-  optional Payload payload = 3;
+  Payload payload = 3;
 
   // Whether SimpleResponse should include username.
-  optional bool fill_username = 4;
+  bool fill_username = 4;
 
   // Whether SimpleResponse should include OAuth scope.
-  optional bool fill_oauth_scope = 5;
+  bool fill_oauth_scope = 5;
 }
 
 // Unary response, as configured by the request.
 message SimpleResponse {
   // Payload to increase message size.
-  optional Payload payload = 1;
+  Payload payload = 1;
   // The user the request came from, for verifying authentication was
   // successful when the client expected it.
-  optional string username = 2;
+  string username = 2;
   // OAuth scope.
-  optional string oauth_scope = 3;
+  string oauth_scope = 3;
 }
 
 // Client-streaming request.
 message StreamingInputCallRequest {
   // Optional input payload sent along with the request.
-  optional Payload payload = 1;
+  Payload payload = 1;
 
   // Not expecting any payload from the response.
 }
@@ -99,18 +97,18 @@ message StreamingInputCallRequest {
 // Client-streaming response.
 message StreamingInputCallResponse {
   // Aggregated size of payloads received from the client.
-  optional int32 aggregated_payload_size = 1;
+  int32 aggregated_payload_size = 1;
 }
 
 // Configuration for a particular response.
 message ResponseParameters {
   // Desired payload sizes in responses from the server.
   // If response_type is COMPRESSABLE, this denotes the size before compression.
-  optional int32 size = 1;
+  int32 size = 1;
 
   // Desired interval between consecutive responses in the response stream in
   // microseconds.
-  optional int32 interval_us = 2;
+  int32 interval_us = 2;
 }
 
 // Server-streaming request.
@@ -119,17 +117,17 @@ message StreamingOutputCallRequest {
   // If response_type is RANDOM, the payload from each response in the stream
   // might be of different types. This is to simulate a mixed type of payload
   // stream.
-  optional PayloadType response_type = 1;
+  PayloadType response_type = 1;
 
   // Configuration for each expected response message.
   repeated ResponseParameters response_parameters = 2;
 
   // Optional input payload sent along with the request.
-  optional Payload payload = 3;
+  Payload payload = 3;
 }
 
 // Server-streaming response, as configured by the request and parameters.
 message StreamingOutputCallResponse {
   // Payload to increase response size.
-  optional Payload payload = 1;
+  Payload payload = 1;
 }

src/objective-c/examples/Sample/RemoteTestClient/test.proto

@@ -29,15 +29,14 @@
 
 // An integration test service that covers all the method signature permutations
 // of unary/streaming requests/responses.
-syntax = "proto2";
+syntax = "proto3";
 
 import "empty.proto";
 import "messages.proto";
-import "google/protobuf/objectivec-descriptor.proto";
 
 package grpc.testing;
 
-option (google.protobuf.objectivec_file_options).class_prefix = "RMT";
+option objc_class_prefix = "RMT";
 
 // A simple service to test the various types of RPCs and experiment with
 // performance with various types of payload.
@@ -51,24 +50,24 @@ service TestService {
 
   // One request followed by a sequence of responses (streamed download).
   // The server returns the payload with client desired type and sizes.
-//  rpc StreamingOutputCall(StreamingOutputCallRequest)
-//      returns (stream StreamingOutputCallResponse);
+  rpc StreamingOutputCall(StreamingOutputCallRequest)
+      returns (stream StreamingOutputCallResponse);
 
   // A sequence of requests followed by one response (streamed upload).
   // The server returns the aggregated size of client payload as the result.
-//  rpc StreamingInputCall(stream StreamingInputCallRequest)
-//      returns (StreamingInputCallResponse);
+  rpc StreamingInputCall(stream StreamingInputCallRequest)
+      returns (StreamingInputCallResponse);
 
   // A sequence of requests with each request served by the server immediately.
   // As one request could lead to multiple responses, this interface
   // demonstrates the idea of full duplexing.
-//  rpc FullDuplexCall(stream StreamingOutputCallRequest)
-//      returns (stream StreamingOutputCallResponse);
+  rpc FullDuplexCall(stream StreamingOutputCallRequest)
+      returns (stream StreamingOutputCallResponse);
 
   // A sequence of requests followed by a sequence of responses.
   // The server buffers all the client requests and then serves them in order. A
   // stream of responses are returned to the client when the server starts with
   // first request.
-//  rpc HalfDuplexCall(stream StreamingOutputCallRequest)
-//      returns (stream StreamingOutputCallResponse);
+  rpc HalfDuplexCall(stream StreamingOutputCallRequest)
+      returns (stream StreamingOutputCallResponse);
 }

src/objective-c/examples/Sample/RouteGuideClient/RouteGuide.pbobjc.h

@@ -0,0 +1,134 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: route_guide.proto
+
+#import "GPBProtocolBuffers.h"
+
+#if GOOGLE_PROTOBUF_OBJC_GEN_VERSION != 30000
+#error This file was generated by a different version of protoc-gen-objc which is incompatible with your Protocol Buffer sources.
+#endif
+
+CF_EXTERN_C_BEGIN
+
+@class RGDFeature;
+@class RGDPoint;
+@class RGDRectangle;
+@class RGDRouteNote;
+@class RGDRouteSummary;
+
+
+#pragma mark - RGDRouteGuideRoot
+
+@interface RGDRouteGuideRoot : GPBRootObject
+@end
+
+#pragma mark - RGDPoint
+
+typedef GPB_ENUM(RGDPoint_FieldNumber) {
+  RGDPoint_FieldNumber_Latitude = 1,
+  RGDPoint_FieldNumber_Longitude = 2,
+};
+
+// Points are represented as latitude-longitude pairs in the E7 representation
+// (degrees multiplied by 10**7 and rounded to the nearest integer).
+// Latitudes should be in the range +/- 90 degrees and longitude should be in
+// the range +/- 180 degrees (inclusive).
+@interface RGDPoint : GPBMessage
+
+@property(nonatomic, readwrite) int32_t latitude;
+
+@property(nonatomic, readwrite) int32_t longitude;
+
+@end
+
+#pragma mark - RGDRectangle
+
+typedef GPB_ENUM(RGDRectangle_FieldNumber) {
+  RGDRectangle_FieldNumber_Lo = 1,
+  RGDRectangle_FieldNumber_Hi = 2,
+};
+
+// A latitude-longitude rectangle, represented as two diagonally opposite
+// points "lo" and "hi".
+@interface RGDRectangle : GPBMessage
+
+// One corner of the rectangle.
+@property(nonatomic, readwrite) BOOL hasLo;
+@property(nonatomic, readwrite, strong) RGDPoint *lo;
+
+// The other corner of the rectangle.
+@property(nonatomic, readwrite) BOOL hasHi;
+@property(nonatomic, readwrite, strong) RGDPoint *hi;
+
+@end
+
+#pragma mark - RGDFeature
+
+typedef GPB_ENUM(RGDFeature_FieldNumber) {
+  RGDFeature_FieldNumber_Name = 1,
+  RGDFeature_FieldNumber_Location = 2,
+};
+
+// A feature names something at a given point.
+//
+// If a feature could not be named, the name is empty.
+@interface RGDFeature : GPBMessage
+
+// The name of the feature.
+@property(nonatomic, readwrite, copy) NSString *name;
+
+// The point where the feature is detected.
+@property(nonatomic, readwrite) BOOL hasLocation;
+@property(nonatomic, readwrite, strong) RGDPoint *location;
+
+@end
+
+#pragma mark - RGDRouteNote
+
+typedef GPB_ENUM(RGDRouteNote_FieldNumber) {
+  RGDRouteNote_FieldNumber_Location = 1,
+  RGDRouteNote_FieldNumber_Message = 2,
+};
+
+// A RouteNote is a message sent while at a given point.
+@interface RGDRouteNote : GPBMessage
+
+// The location from which the message is sent.
+@property(nonatomic, readwrite) BOOL hasLocation;
+@property(nonatomic, readwrite, strong) RGDPoint *location;
+
+// The message to be sent.
+@property(nonatomic, readwrite, copy) NSString *message;
+
+@end
+
+#pragma mark - RGDRouteSummary
+
+typedef GPB_ENUM(RGDRouteSummary_FieldNumber) {
+  RGDRouteSummary_FieldNumber_PointCount = 1,
+  RGDRouteSummary_FieldNumber_FeatureCount = 2,
+  RGDRouteSummary_FieldNumber_Distance = 3,
+  RGDRouteSummary_FieldNumber_ElapsedTime = 4,
+};
+
+// A RouteSummary is received in response to a RecordRoute rpc.
+//
+// It contains the number of individual points received, the number of
+// detected features, and the total distance covered as the cumulative sum of
+// the distance between each point.
+@interface RGDRouteSummary : GPBMessage
+
+// The number of points received.
+@property(nonatomic, readwrite) int32_t pointCount;
+
+// The number of known features passed while traversing the route.
+@property(nonatomic, readwrite) int32_t featureCount;
+
+// The distance covered in metres.
+@property(nonatomic, readwrite) int32_t distance;
+
+// The duration of the traversal in seconds.
+@property(nonatomic, readwrite) int32_t elapsedTime;
+
+@end
+
+CF_EXTERN_C_END

src/objective-c/examples/Sample/RouteGuideClient/RouteGuide.pbobjc.m

@@ -0,0 +1,355 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: route_guide.proto
+
+#import "GPBProtocolBuffers_RuntimeSupport.h"
+
+#import "RouteGuide.pbobjc.h"
+
+#pragma mark - RGDRouteGuideRoot
+
+@implementation RGDRouteGuideRoot
+
+@end
+
+static GPBFileDescriptor *RGDRouteGuideRoot_FileDescriptor(void) {
+  // This is called by +initialize so there is no need to worry
+  // about thread safety of the singleton.
+  static GPBFileDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    descriptor = [[GPBFileDescriptor alloc] initWithPackage:@"grpc.example.routeguide"
+                                                     syntax:GPBFileSyntaxProto3];
+  }
+  return descriptor;
+}
+
+#pragma mark - RGDPoint
+
+@implementation RGDPoint
+
+@dynamic latitude;
+@dynamic longitude;
+
+typedef struct RGDPoint_Storage {
+  uint32_t _has_storage_[1];
+  int32_t latitude;
+  int32_t longitude;
+} RGDPoint_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "latitude",
+        .number = RGDPoint_FieldNumber_Latitude,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RGDPoint_Storage, latitude),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "longitude",
+        .number = RGDPoint_FieldNumber_Longitude,
+        .hasIndex = 1,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RGDPoint_Storage, longitude),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RGDPoint class]
+                                              rootClass:[RGDRouteGuideRoot class]
+                                                   file:RGDRouteGuideRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RGDPoint_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+#pragma mark - RGDRectangle
+
+@implementation RGDRectangle
+
+@dynamic hasLo, lo;
+@dynamic hasHi, hi;
+
+typedef struct RGDRectangle_Storage {
+  uint32_t _has_storage_[1];
+  RGDPoint *lo;
+  RGDPoint *hi;
+} RGDRectangle_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "lo",
+        .number = RGDRectangle_FieldNumber_Lo,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RGDRectangle_Storage, lo),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RGDPoint),
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "hi",
+        .number = RGDRectangle_FieldNumber_Hi,
+        .hasIndex = 1,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RGDRectangle_Storage, hi),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RGDPoint),
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RGDRectangle class]
+                                              rootClass:[RGDRouteGuideRoot class]
+                                                   file:RGDRouteGuideRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RGDRectangle_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+#pragma mark - RGDFeature
+
+@implementation RGDFeature
+
+@dynamic name;
+@dynamic hasLocation, location;
+
+typedef struct RGDFeature_Storage {
+  uint32_t _has_storage_[1];
+  NSString *name;
+  RGDPoint *location;
+} RGDFeature_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "name",
+        .number = RGDFeature_FieldNumber_Name,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeString,
+        .offset = offsetof(RGDFeature_Storage, name),
+        .defaultValue.valueString = nil,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "location",
+        .number = RGDFeature_FieldNumber_Location,
+        .hasIndex = 1,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RGDFeature_Storage, location),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RGDPoint),
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RGDFeature class]
+                                              rootClass:[RGDRouteGuideRoot class]
+                                                   file:RGDRouteGuideRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RGDFeature_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+#pragma mark - RGDRouteNote
+
+@implementation RGDRouteNote
+
+@dynamic hasLocation, location;
+@dynamic message;
+
+typedef struct RGDRouteNote_Storage {
+  uint32_t _has_storage_[1];
+  RGDPoint *location;
+  NSString *message;
+} RGDRouteNote_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "location",
+        .number = RGDRouteNote_FieldNumber_Location,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeMessage,
+        .offset = offsetof(RGDRouteNote_Storage, location),
+        .defaultValue.valueMessage = nil,
+        .typeSpecific.className = GPBStringifySymbol(RGDPoint),
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "message",
+        .number = RGDRouteNote_FieldNumber_Message,
+        .hasIndex = 1,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeString,
+        .offset = offsetof(RGDRouteNote_Storage, message),
+        .defaultValue.valueString = nil,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RGDRouteNote class]
+                                              rootClass:[RGDRouteGuideRoot class]
+                                                   file:RGDRouteGuideRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RGDRouteNote_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+
+#pragma mark - RGDRouteSummary
+
+@implementation RGDRouteSummary
+
+@dynamic pointCount;
+@dynamic featureCount;
+@dynamic distance;
+@dynamic elapsedTime;
+
+typedef struct RGDRouteSummary_Storage {
+  uint32_t _has_storage_[1];
+  int32_t pointCount;
+  int32_t featureCount;
+  int32_t distance;
+  int32_t elapsedTime;
+} RGDRouteSummary_Storage;
+
+// This method is threadsafe because it is initially called
+// in +initialize for each subclass.
++ (GPBDescriptor *)descriptor {
+  static GPBDescriptor *descriptor = NULL;
+  if (!descriptor) {
+    static GPBMessageFieldDescription fields[] = {
+      {
+        .name = "pointCount",
+        .number = RGDRouteSummary_FieldNumber_PointCount,
+        .hasIndex = 0,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RGDRouteSummary_Storage, pointCount),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "featureCount",
+        .number = RGDRouteSummary_FieldNumber_FeatureCount,
+        .hasIndex = 1,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RGDRouteSummary_Storage, featureCount),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "distance",
+        .number = RGDRouteSummary_FieldNumber_Distance,
+        .hasIndex = 2,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RGDRouteSummary_Storage, distance),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+      {
+        .name = "elapsedTime",
+        .number = RGDRouteSummary_FieldNumber_ElapsedTime,
+        .hasIndex = 3,
+        .flags = GPBFieldOptional,
+        .type = GPBTypeInt32,
+        .offset = offsetof(RGDRouteSummary_Storage, elapsedTime),
+        .defaultValue.valueInt32 = 0,
+        .typeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
+    };
+    descriptor = [GPBDescriptor allocDescriptorForClass:[RGDRouteSummary class]
+                                              rootClass:[RGDRouteGuideRoot class]
+                                                   file:RGDRouteGuideRoot_FileDescriptor()
+                                                 fields:fields
+                                             fieldCount:sizeof(fields) / sizeof(GPBMessageFieldDescription)
+                                                 oneofs:NULL
+                                             oneofCount:0
+                                                  enums:NULL
+                                              enumCount:0
+                                                 ranges:NULL
+                                             rangeCount:0
+                                            storageSize:sizeof(RGDRouteSummary_Storage)
+                                             wireFormat:NO];
+  }
+  return descriptor;
+}
+
+@end
+

src/objective-c/examples/Sample/RouteGuideClient/RouteGuide.pbrpc.h

@@ -0,0 +1,43 @@
+#import "RouteGuide.pbobjc.h"
+#import <gRPC/ProtoService.h>
+
+
+@protocol GRXWriteable;
+@protocol GRXWriter;
+
+@protocol RGDRouteGuide <NSObject>
+
+#pragma mark GetFeature(Point) returns (Feature)
+
+- (void)getFeatureWithRequest:(RGDPoint *)request handler:(void(^)(RGDFeature *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToGetFeatureWithRequest:(RGDPoint *)request handler:(void(^)(RGDFeature *response, NSError *error))handler;
+
+
+#pragma mark ListFeatures(Rectangle) returns (stream Feature)
+
+- (void)listFeaturesWithRequest:(RGDRectangle *)request handler:(void(^)(BOOL done, RGDFeature *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToListFeaturesWithRequest:(RGDRectangle *)request handler:(void(^)(BOOL done, RGDFeature *response, NSError *error))handler;
+
+
+#pragma mark RecordRoute(stream Point) returns (RouteSummary)
+
+- (void)recordRouteWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(RGDRouteSummary *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToRecordRouteWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(RGDRouteSummary *response, NSError *error))handler;
+
+
+#pragma mark RouteChat(stream RouteNote) returns (stream RouteNote)
+
+- (void)routeChatWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RGDRouteNote *response, NSError *error))handler;
+
+- (ProtoRPC *)RPCToRouteChatWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RGDRouteNote *response, NSError *error))handler;
+
+
+@end
+
+// Basic service implementation, over gRPC, that only does marshalling and parsing.
+@interface RGDRouteGuide : ProtoService<RGDRouteGuide>
+- (instancetype)initWithHost:(NSString *)host NS_DESIGNATED_INITIALIZER;
+@end

src/objective-c/examples/Sample/RouteGuideClient/RouteGuide.pbrpc.m

@@ -0,0 +1,72 @@
+#import "RouteGuide.pbrpc.h"
+#import <gRPC/GRXWriteable.h>
+#import <gRPC/GRXWriter+Immediate.h>
+#import <gRPC/ProtoRPC.h>
+
+static NSString *const kPackageName = @"grpc.example.routeguide";
+static NSString *const kServiceName = @"RouteGuide";
+
+@implementation RGDRouteGuide
+
+// Designated initializer
+- (instancetype)initWithHost:(NSString *)host {
+  return (self = [super initWithHost:host packageName:kPackageName serviceName:kServiceName]);
+}
+
+// Override superclass initializer to disallow different package and service names.
+- (instancetype)initWithHost:(NSString *)host
+                 packageName:(NSString *)packageName
+                 serviceName:(NSString *)serviceName {
+  return [self initWithHost:host];
+}
+
+
+#pragma mark GetFeature(Point) returns (Feature)
+
+- (void)getFeatureWithRequest:(RGDPoint *)request handler:(void(^)(RGDFeature *response, NSError *error))handler{
+  [[self RPCToGetFeatureWithRequest:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToGetFeatureWithRequest:(RGDPoint *)request handler:(void(^)(RGDFeature *response, NSError *error))handler{
+  return [self RPCToMethod:@"GetFeature"
+            requestsWriter:[GRXWriter writerWithValue:request]
+             responseClass:[RGDFeature class]
+        responsesWriteable:[GRXWriteable writeableWithSingleValueHandler:handler]];
+}
+#pragma mark ListFeatures(Rectangle) returns (stream Feature)
+
+- (void)listFeaturesWithRequest:(RGDRectangle *)request handler:(void(^)(BOOL done, RGDFeature *response, NSError *error))handler{
+  [[self RPCToListFeaturesWithRequest:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToListFeaturesWithRequest:(RGDRectangle *)request handler:(void(^)(BOOL done, RGDFeature *response, NSError *error))handler{
+  return [self RPCToMethod:@"ListFeatures"
+            requestsWriter:[GRXWriter writerWithValue:request]
+             responseClass:[RGDFeature class]
+        responsesWriteable:[GRXWriteable writeableWithStreamHandler:handler]];
+}
+#pragma mark RecordRoute(stream Point) returns (RouteSummary)
+
+- (void)recordRouteWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(RGDRouteSummary *response, NSError *error))handler{
+  [[self RPCToRecordRouteWithRequestsWriter:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToRecordRouteWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(RGDRouteSummary *response, NSError *error))handler{
+  return [self RPCToMethod:@"RecordRoute"
+            requestsWriter:request
+             responseClass:[RGDRouteSummary class]
+        responsesWriteable:[GRXWriteable writeableWithSingleValueHandler:handler]];
+}
+#pragma mark RouteChat(stream RouteNote) returns (stream RouteNote)
+
+- (void)routeChatWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RGDRouteNote *response, NSError *error))handler{
+  [[self RPCToRouteChatWithRequestsWriter:request handler:handler] start];
+}
+// Returns a not-yet-started RPC object.
+- (ProtoRPC *)RPCToRouteChatWithRequestsWriter:(id<GRXWriter>)request handler:(void(^)(BOOL done, RGDRouteNote *response, NSError *error))handler{
+  return [self RPCToMethod:@"RouteChat"
+            requestsWriter:request
+             responseClass:[RGDRouteNote class]
+        responsesWriteable:[GRXWriteable writeableWithStreamHandler:handler]];
+}
+@end

src/objective-c/examples/Sample/RouteGuideClient/Route_guide.pb.h

@@ -1,387 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-
-#import <ProtocolBuffers/ProtocolBuffers.h>
-
-// @@protoc_insertion_point(imports)
-
-@class ObjectiveCFileOptions;
-@class ObjectiveCFileOptionsBuilder;
-@class PBDescriptorProto;
-@class PBDescriptorProtoBuilder;
-@class PBDescriptorProtoExtensionRange;
-@class PBDescriptorProtoExtensionRangeBuilder;
-@class PBEnumDescriptorProto;
-@class PBEnumDescriptorProtoBuilder;
-@class PBEnumOptions;
-@class PBEnumOptionsBuilder;
-@class PBEnumValueDescriptorProto;
-@class PBEnumValueDescriptorProtoBuilder;
-@class PBEnumValueOptions;
-@class PBEnumValueOptionsBuilder;
-@class PBFieldDescriptorProto;
-@class PBFieldDescriptorProtoBuilder;
-@class PBFieldOptions;
-@class PBFieldOptionsBuilder;
-@class PBFileDescriptorProto;
-@class PBFileDescriptorProtoBuilder;
-@class PBFileDescriptorSet;
-@class PBFileDescriptorSetBuilder;
-@class PBFileOptions;
-@class PBFileOptionsBuilder;
-@class PBMessageOptions;
-@class PBMessageOptionsBuilder;
-@class PBMethodDescriptorProto;
-@class PBMethodDescriptorProtoBuilder;
-@class PBMethodOptions;
-@class PBMethodOptionsBuilder;
-@class PBOneofDescriptorProto;
-@class PBOneofDescriptorProtoBuilder;
-@class PBServiceDescriptorProto;
-@class PBServiceDescriptorProtoBuilder;
-@class PBServiceOptions;
-@class PBServiceOptionsBuilder;
-@class PBSourceCodeInfo;
-@class PBSourceCodeInfoBuilder;
-@class PBSourceCodeInfoLocation;
-@class PBSourceCodeInfoLocationBuilder;
-@class PBUninterpretedOption;
-@class PBUninterpretedOptionBuilder;
-@class PBUninterpretedOptionNamePart;
-@class PBUninterpretedOptionNamePartBuilder;
-@class RGDFeature;
-@class RGDFeatureBuilder;
-@class RGDPoint;
-@class RGDPointBuilder;
-@class RGDRectangle;
-@class RGDRectangleBuilder;
-@class RGDRouteNote;
-@class RGDRouteNoteBuilder;
-@class RGDRouteSummary;
-@class RGDRouteSummaryBuilder;
-
-
-
-@interface RGDRouteGuideRoot : NSObject {
-}
-+ (PBExtensionRegistry*) extensionRegistry;
-+ (void) registerAllExtensions:(PBMutableExtensionRegistry*) registry;
-@end
-
-@interface RGDPoint : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasLatitude_:1;
-  BOOL hasLongitude_:1;
-  SInt32 latitude;
-  SInt32 longitude;
-}
-- (BOOL) hasLatitude;
-- (BOOL) hasLongitude;
-@property (readonly) SInt32 latitude;
-@property (readonly) SInt32 longitude;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RGDPointBuilder*) builder;
-+ (RGDPointBuilder*) builder;
-+ (RGDPointBuilder*) builderWithPrototype:(RGDPoint*) prototype;
-- (RGDPointBuilder*) toBuilder;
-
-+ (RGDPoint*) parseFromData:(NSData*) data;
-+ (RGDPoint*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDPoint*) parseFromInputStream:(NSInputStream*) input;
-+ (RGDPoint*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDPoint*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RGDPoint*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RGDPointBuilder : PBGeneratedMessageBuilder {
-@private
-  RGDPoint* resultPoint;
-}
-
-- (RGDPoint*) defaultInstance;
-
-- (RGDPointBuilder*) clear;
-- (RGDPointBuilder*) clone;
-
-- (RGDPoint*) build;
-- (RGDPoint*) buildPartial;
-
-- (RGDPointBuilder*) mergeFrom:(RGDPoint*) other;
-- (RGDPointBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RGDPointBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasLatitude;
-- (SInt32) latitude;
-- (RGDPointBuilder*) setLatitude:(SInt32) value;
-- (RGDPointBuilder*) clearLatitude;
-
-- (BOOL) hasLongitude;
-- (SInt32) longitude;
-- (RGDPointBuilder*) setLongitude:(SInt32) value;
-- (RGDPointBuilder*) clearLongitude;
-@end
-
-@interface RGDRectangle : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasLo_:1;
-  BOOL hasHi_:1;
-  RGDPoint* lo;
-  RGDPoint* hi;
-}
-- (BOOL) hasLo;
-- (BOOL) hasHi;
-@property (readonly, strong) RGDPoint* lo;
-@property (readonly, strong) RGDPoint* hi;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RGDRectangleBuilder*) builder;
-+ (RGDRectangleBuilder*) builder;
-+ (RGDRectangleBuilder*) builderWithPrototype:(RGDRectangle*) prototype;
-- (RGDRectangleBuilder*) toBuilder;
-
-+ (RGDRectangle*) parseFromData:(NSData*) data;
-+ (RGDRectangle*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDRectangle*) parseFromInputStream:(NSInputStream*) input;
-+ (RGDRectangle*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDRectangle*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RGDRectangle*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RGDRectangleBuilder : PBGeneratedMessageBuilder {
-@private
-  RGDRectangle* resultRectangle;
-}
-
-- (RGDRectangle*) defaultInstance;
-
-- (RGDRectangleBuilder*) clear;
-- (RGDRectangleBuilder*) clone;
-
-- (RGDRectangle*) build;
-- (RGDRectangle*) buildPartial;
-
-- (RGDRectangleBuilder*) mergeFrom:(RGDRectangle*) other;
-- (RGDRectangleBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RGDRectangleBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasLo;
-- (RGDPoint*) lo;
-- (RGDRectangleBuilder*) setLo:(RGDPoint*) value;
-- (RGDRectangleBuilder*) setLoBuilder:(RGDPointBuilder*) builderForValue;
-- (RGDRectangleBuilder*) mergeLo:(RGDPoint*) value;
-- (RGDRectangleBuilder*) clearLo;
-
-- (BOOL) hasHi;
-- (RGDPoint*) hi;
-- (RGDRectangleBuilder*) setHi:(RGDPoint*) value;
-- (RGDRectangleBuilder*) setHiBuilder:(RGDPointBuilder*) builderForValue;
-- (RGDRectangleBuilder*) mergeHi:(RGDPoint*) value;
-- (RGDRectangleBuilder*) clearHi;
-@end
-
-@interface RGDFeature : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasName_:1;
-  BOOL hasLocation_:1;
-  NSString* name;
-  RGDPoint* location;
-}
-- (BOOL) hasName;
-- (BOOL) hasLocation;
-@property (readonly, strong) NSString* name;
-@property (readonly, strong) RGDPoint* location;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RGDFeatureBuilder*) builder;
-+ (RGDFeatureBuilder*) builder;
-+ (RGDFeatureBuilder*) builderWithPrototype:(RGDFeature*) prototype;
-- (RGDFeatureBuilder*) toBuilder;
-
-+ (RGDFeature*) parseFromData:(NSData*) data;
-+ (RGDFeature*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDFeature*) parseFromInputStream:(NSInputStream*) input;
-+ (RGDFeature*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDFeature*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RGDFeature*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RGDFeatureBuilder : PBGeneratedMessageBuilder {
-@private
-  RGDFeature* resultFeature;
-}
-
-- (RGDFeature*) defaultInstance;
-
-- (RGDFeatureBuilder*) clear;
-- (RGDFeatureBuilder*) clone;
-
-- (RGDFeature*) build;
-- (RGDFeature*) buildPartial;
-
-- (RGDFeatureBuilder*) mergeFrom:(RGDFeature*) other;
-- (RGDFeatureBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RGDFeatureBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasName;
-- (NSString*) name;
-- (RGDFeatureBuilder*) setName:(NSString*) value;
-- (RGDFeatureBuilder*) clearName;
-
-- (BOOL) hasLocation;
-- (RGDPoint*) location;
-- (RGDFeatureBuilder*) setLocation:(RGDPoint*) value;
-- (RGDFeatureBuilder*) setLocationBuilder:(RGDPointBuilder*) builderForValue;
-- (RGDFeatureBuilder*) mergeLocation:(RGDPoint*) value;
-- (RGDFeatureBuilder*) clearLocation;
-@end
-
-@interface RGDRouteNote : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasMessage_:1;
-  BOOL hasLocation_:1;
-  NSString* message;
-  RGDPoint* location;
-}
-- (BOOL) hasLocation;
-- (BOOL) hasMessage;
-@property (readonly, strong) RGDPoint* location;
-@property (readonly, strong) NSString* message;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RGDRouteNoteBuilder*) builder;
-+ (RGDRouteNoteBuilder*) builder;
-+ (RGDRouteNoteBuilder*) builderWithPrototype:(RGDRouteNote*) prototype;
-- (RGDRouteNoteBuilder*) toBuilder;
-
-+ (RGDRouteNote*) parseFromData:(NSData*) data;
-+ (RGDRouteNote*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDRouteNote*) parseFromInputStream:(NSInputStream*) input;
-+ (RGDRouteNote*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDRouteNote*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RGDRouteNote*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RGDRouteNoteBuilder : PBGeneratedMessageBuilder {
-@private
-  RGDRouteNote* resultRouteNote;
-}
-
-- (RGDRouteNote*) defaultInstance;
-
-- (RGDRouteNoteBuilder*) clear;
-- (RGDRouteNoteBuilder*) clone;
-
-- (RGDRouteNote*) build;
-- (RGDRouteNote*) buildPartial;
-
-- (RGDRouteNoteBuilder*) mergeFrom:(RGDRouteNote*) other;
-- (RGDRouteNoteBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RGDRouteNoteBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasLocation;
-- (RGDPoint*) location;
-- (RGDRouteNoteBuilder*) setLocation:(RGDPoint*) value;
-- (RGDRouteNoteBuilder*) setLocationBuilder:(RGDPointBuilder*) builderForValue;
-- (RGDRouteNoteBuilder*) mergeLocation:(RGDPoint*) value;
-- (RGDRouteNoteBuilder*) clearLocation;
-
-- (BOOL) hasMessage;
-- (NSString*) message;
-- (RGDRouteNoteBuilder*) setMessage:(NSString*) value;
-- (RGDRouteNoteBuilder*) clearMessage;
-@end
-
-@interface RGDRouteSummary : PBGeneratedMessage<GeneratedMessageProtocol> {
-@private
-  BOOL hasPointCount_:1;
-  BOOL hasFeatureCount_:1;
-  BOOL hasDistance_:1;
-  BOOL hasElapsedTime_:1;
-  SInt32 pointCount;
-  SInt32 featureCount;
-  SInt32 distance;
-  SInt32 elapsedTime;
-}
-- (BOOL) hasPointCount;
-- (BOOL) hasFeatureCount;
-- (BOOL) hasDistance;
-- (BOOL) hasElapsedTime;
-@property (readonly) SInt32 pointCount;
-@property (readonly) SInt32 featureCount;
-@property (readonly) SInt32 distance;
-@property (readonly) SInt32 elapsedTime;
-
-+ (instancetype) defaultInstance;
-- (instancetype) defaultInstance;
-
-- (BOOL) isInitialized;
-- (void) writeToCodedOutputStream:(PBCodedOutputStream*) output;
-- (RGDRouteSummaryBuilder*) builder;
-+ (RGDRouteSummaryBuilder*) builder;
-+ (RGDRouteSummaryBuilder*) builderWithPrototype:(RGDRouteSummary*) prototype;
-- (RGDRouteSummaryBuilder*) toBuilder;
-
-+ (RGDRouteSummary*) parseFromData:(NSData*) data;
-+ (RGDRouteSummary*) parseFromData:(NSData*) data extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDRouteSummary*) parseFromInputStream:(NSInputStream*) input;
-+ (RGDRouteSummary*) parseFromInputStream:(NSInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-+ (RGDRouteSummary*) parseFromCodedInputStream:(PBCodedInputStream*) input;
-+ (RGDRouteSummary*) parseFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-@end
-
-@interface RGDRouteSummaryBuilder : PBGeneratedMessageBuilder {
-@private
-  RGDRouteSummary* resultRouteSummary;
-}
-
-- (RGDRouteSummary*) defaultInstance;
-
-- (RGDRouteSummaryBuilder*) clear;
-- (RGDRouteSummaryBuilder*) clone;
-
-- (RGDRouteSummary*) build;
-- (RGDRouteSummary*) buildPartial;
-
-- (RGDRouteSummaryBuilder*) mergeFrom:(RGDRouteSummary*) other;
-- (RGDRouteSummaryBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input;
-- (RGDRouteSummaryBuilder*) mergeFromCodedInputStream:(PBCodedInputStream*) input extensionRegistry:(PBExtensionRegistry*) extensionRegistry;
-
-- (BOOL) hasPointCount;
-- (SInt32) pointCount;
-- (RGDRouteSummaryBuilder*) setPointCount:(SInt32) value;
-- (RGDRouteSummaryBuilder*) clearPointCount;
-
-- (BOOL) hasFeatureCount;
-- (SInt32) featureCount;
-- (RGDRouteSummaryBuilder*) setFeatureCount:(SInt32) value;
-- (RGDRouteSummaryBuilder*) clearFeatureCount;
-
-- (BOOL) hasDistance;
-- (SInt32) distance;
-- (RGDRouteSummaryBuilder*) setDistance:(SInt32) value;
-- (RGDRouteSummaryBuilder*) clearDistance;
-
-- (BOOL) hasElapsedTime;
-- (SInt32) elapsedTime;
-- (RGDRouteSummaryBuilder*) setElapsedTime:(SInt32) value;
-- (RGDRouteSummaryBuilder*) clearElapsedTime;
-@end
-
-
-// @@protoc_insertion_point(global_scope)

src/objective-c/examples/Sample/RouteGuideClient/Route_guide.podspec

@@ -6,12 +6,19 @@ Pod::Spec.new do |s|
   s.license  = 'New BSD'
   s.authors  = { 'Jorge Canizales' => 'jcanizales@google.com' }
 
-  s.source_files = '*.pb.{h,m}'
-  s.public_header_files = '*.pb.h'
-
-  s.platform = :ios
   s.ios.deployment_target = '6.0'
-  s.requires_arc = true
+  s.osx.deployment_target = '10.8'
+
+  s.subspec 'Messages' do |ms|
+    ms.source_files = '*.pbobjc.{h,m}'
+    ms.requires_arc = false
+    ms.dependency 'Protobuf', '~> 3.0'
+  end
 
-  s.dependency 'ProtocolBuffers', '~> 1.9'
+  s.subspec 'Services' do |ss|
+    ss.source_files = '*.pbrpc.{h,m}'
+    ss.requires_arc = true
+    ss.dependency 'gRPC', '~> 0.0'
+    ss.dependency 'Route_guide/Messages'
+  end
 end

src/objective-c/examples/Sample/RouteGuideClient/route_guide.proto

@@ -27,12 +27,11 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-syntax = "proto2";
+syntax = "proto3";
 
 package grpc.example.routeguide;
 
-import "google/protobuf/objectivec-descriptor.proto";
-option (google.protobuf.objectivec_file_options).class_prefix = "RGD";
+option objc_class_prefix = "RGD";
 
 // Interface exported by the server.
 service RouteGuide {
@@ -47,19 +46,19 @@ service RouteGuide {
   // streamed rather than returned at once (e.g. in a response message with a
   // repeated field), as the rectangle may cover a large area and contain a
   // huge number of features.
-//  rpc ListFeatures(Rectangle) returns (stream Feature) {}
+  rpc ListFeatures(Rectangle) returns (stream Feature) {}
 
   // A client-to-server streaming RPC.
   //
   // Accepts a stream of Points on a route being traversed, returning a
   // RouteSummary when traversal is completed.
-//  rpc RecordRoute(stream Point) returns (RouteSummary) {}
+  rpc RecordRoute(stream Point) returns (RouteSummary) {}
 
   // A Bidirectional streaming RPC.
   //
   // Accepts a stream of RouteNotes sent while a route is being traversed,
   // while receiving other RouteNotes (e.g. from other users).
-//  rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
+  rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
 }
 
 // Points are represented as latitude-longitude pairs in the E7 representation
@@ -67,18 +66,18 @@ service RouteGuide {
 // Latitudes should be in the range +/- 90 degrees and longitude should be in
 // the range +/- 180 degrees (inclusive).
 message Point {
-  optional int32 latitude = 1;
-  optional int32 longitude = 2;
+  int32 latitude = 1;
+  int32 longitude = 2;
 }
 
 // A latitude-longitude rectangle, represented as two diagonally opposite
 // points "lo" and "hi".
 message Rectangle {
   // One corner of the rectangle.
-  optional Point lo = 1;
+  Point lo = 1;
 
   // The other corner of the rectangle.
-  optional Point hi = 2;
+  Point hi = 2;
 }
 
 // A feature names something at a given point.
@@ -86,19 +85,19 @@ message Rectangle {
 // If a feature could not be named, the name is empty.
 message Feature {
   // The name of the feature.
-  optional string name = 1;
+  string name = 1;
 
   // The point where the feature is detected.
-  optional Point location = 2;
+  Point location = 2;
 }
 
 // A RouteNote is a message sent while at a given point.
 message RouteNote {
   // The location from which the message is sent.
-  optional Point location = 1;
+  Point location = 1;
 
   // The message to be sent.
-  optional string message = 2;
+  string message = 2;
 }
 
 // A RouteSummary is received in response to a RecordRoute rpc.
@@ -108,14 +107,14 @@ message RouteNote {
 // the distance between each point.
 message RouteSummary {
   // The number of points received.
-  optional int32 point_count = 1;
+  int32 point_count = 1;
 
   // The number of known features passed while traversing the route.
-  optional int32 feature_count = 2;
+  int32 feature_count = 2;
 
   // The distance covered in metres.
-  optional int32 distance = 3;
+  int32 distance = 3;
 
   // The duration of the traversal in seconds.
-  optional int32 elapsed_time = 4;
-}
+  int32 elapsed_time = 4;
+}

src/objective-c/examples/Sample/Sample/ViewController.m

@@ -37,7 +37,8 @@
 #import <gRPC/GRPCMethodName.h>
 #import <gRPC/GRXWriter+Immediate.h>
 #import <gRPC/GRXWriteable.h>
-#import <RemoteTest/Messages.pb.h>
+#import <RemoteTest/Messages.pbobjc.h>
+#import <RemoteTest/Test.pbrpc.h>
 
 @interface ViewController ()
 @end
@@ -47,18 +48,34 @@
 - (void)viewDidLoad {
   [super viewDidLoad];
 
+  NSString * const kRemoteHost = @"grpc-test.sandbox.google.com";
+
+  RMTSimpleRequest *request = [[RMTSimpleRequest alloc] init];
+  request.responseSize = 10;
+  request.fillUsername = YES;
+  request.fillOauthScope = YES;
+
+  // Example gRPC call using a generated proto client library:
+
+  RMTTestService *service = [[RMTTestService alloc] initWithHost:kRemoteHost];
+  [service unaryCallWithRequest:request handler:^(RMTSimpleResponse *response, NSError *error) {
+    if (response) {
+      NSLog(@"Finished successfully with response:\n%@", response);
+    } else if (error) {
+      NSLog(@"Finished with error: %@", error);
+    }
+  }];
+
+
+  // Same example call using the generic gRPC client library:
+
   GRPCMethodName *method = [[GRPCMethodName alloc] initWithPackage:@"grpc.testing"
                                                          interface:@"TestService"
                                                             method:@"UnaryCall"];
 
-  RMTSimpleRequest *request = [[[[[[RMTSimpleRequestBuilder alloc] init]
-                                  setResponseSize:100]
-                                 setFillUsername:YES]
-                                setFillOauthScope:YES]
-                               build];
   id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[request data]];
 
-  GRPCCall *call = [[GRPCCall alloc] initWithHost:@"grpc-test.sandbox.google.com"
+  GRPCCall *call = [[GRPCCall alloc] initWithHost:kRemoteHost
                                            method:method
                                    requestsWriter:requestsWriter];
 
@@ -66,7 +83,11 @@
     RMTSimpleResponse *response = [RMTSimpleResponse parseFromData:value];
     NSLog(@"Received response:\n%@", response);
   } completionHandler:^(NSError *errorOrNil) {
-    NSLog(@"Finished with error: %@", errorOrNil);
+    if (errorOrNil) {
+      NSLog(@"Finished with error: %@", errorOrNil);
+    } else {
+      NSLog(@"Finished successfully.");
+    }
   }];
 
   [call startWithWriteable:responsesWriteable];

src/objective-c/examples/Sample/SampleTests/RemoteProtoTests.m

@@ -36,10 +36,45 @@
 #import <UIKit/UIKit.h>
 #import <XCTest/XCTest.h>
 
-#import <gRPC/ProtoRPC.h>
 #import <gRPC/GRXWriter+Immediate.h>
-#import <RemoteTest/Messages.pb.h>
-#import <RemoteTest/Test.pb.h>
+#import <gRPC/GRXBufferedPipe.h>
+#import <gRPC/ProtoRPC.h>
+#import <RemoteTest/Empty.pbobjc.h>
+#import <RemoteTest/Messages.pbobjc.h>
+#import <RemoteTest/Test.pbobjc.h>
+#import <RemoteTest/Test.pbrpc.h>
+
+// Convenience constructors for the generated proto messages:
+
+@interface RMTStreamingOutputCallRequest (Constructors)
++ (instancetype)messageWithPayloadSize:(NSNumber *)payloadSize
+                 requestedResponseSize:(NSNumber *)responseSize;
+@end
+
+@implementation RMTStreamingOutputCallRequest (Constructors)
++ (instancetype)messageWithPayloadSize:(NSNumber *)payloadSize
+                 requestedResponseSize:(NSNumber *)responseSize {
+  RMTStreamingOutputCallRequest *request = [self message];
+  RMTResponseParameters *parameters = [RMTResponseParameters message];
+  parameters.size = responseSize.integerValue;
+  [request.responseParametersArray addObject:parameters];
+  request.payload.body = [NSMutableData dataWithLength:payloadSize.unsignedIntegerValue];
+  return request;
+}
+@end
+
+@interface RMTStreamingOutputCallResponse (Constructors)
++ (instancetype)messageWithPayloadSize:(NSNumber *)payloadSize;
+@end
+
+@implementation RMTStreamingOutputCallResponse (Constructors)
++ (instancetype)messageWithPayloadSize:(NSNumber *)payloadSize {
+  RMTStreamingOutputCallResponse * response = [self message];
+  response.payload.type = RMTPayloadType_Compressable;
+  response.payload.body = [NSMutableData dataWithLength:payloadSize.unsignedIntegerValue];
+  return response;
+}
+@end
 
 @interface RemoteProtoTests : XCTestCase
 @end
@@ -57,133 +92,178 @@
 - (void)testEmptyUnaryRPC {
   __weak XCTestExpectation *expectation = [self expectationWithDescription:@"EmptyUnary"];
 
-  RMTEmpty *request = [RMTEmpty defaultInstance];
+  RMTEmpty *request = [RMTEmpty message];
 
   [_service emptyCallWithRequest:request handler:^(RMTEmpty *response, NSError *error) {
     XCTAssertNil(error, @"Finished with unexpected error: %@", error);
 
-    id expectedResponse = [RMTEmpty defaultInstance];
+    id expectedResponse = [RMTEmpty message];
     XCTAssertEqualObjects(response, expectedResponse);
 
     [expectation fulfill];
   }];
 
-  [self waitForExpectationsWithTimeout:2. handler:nil];
+  [self waitForExpectationsWithTimeout:2 handler:nil];
 }
 
 - (void)testLargeUnaryRPC {
   __weak XCTestExpectation *expectation = [self expectationWithDescription:@"LargeUnary"];
 
-  RMTSimpleRequest *request = [[[[[[RMTSimpleRequestBuilder alloc] init]
-                                  setResponseType:RMTPayloadTypeCompressable]
-                                 setResponseSize:314159]
-                                setPayloadBuilder:[[[RMTPayloadBuilder alloc] init]
-                                             setBody:[NSMutableData dataWithLength:271828]]]
-                               build];
+  RMTSimpleRequest *request = [RMTSimpleRequest message];
+  request.responseType = RMTPayloadType_Compressable;
+  request.responseSize = 314159;
+  request.payload.body = [NSMutableData dataWithLength:271828];
 
   [_service unaryCallWithRequest:request handler:^(RMTSimpleResponse *response, NSError *error) {
     XCTAssertNil(error, @"Finished with unexpected error: %@", error);
 
-    id expectedResponse = [[[[RMTSimpleResponseBuilder alloc] init]
-                            setPayloadBuilder:[[[[RMTPayloadBuilder alloc] init]
-                                                setType:RMTPayloadTypeCompressable]
-                                               setBody:[NSMutableData dataWithLength:314159]]]
-                           build];
+    RMTSimpleResponse *expectedResponse = [RMTSimpleResponse message];
+    expectedResponse.payload.type = RMTPayloadType_Compressable;
+    expectedResponse.payload.body = [NSMutableData dataWithLength:314159];
     XCTAssertEqualObjects(response, expectedResponse);
 
     [expectation fulfill];
   }];
 
-  [self waitForExpectationsWithTimeout:4. handler:nil];
+  [self waitForExpectationsWithTimeout:4 handler:nil];
 }
 
 - (void)testClientStreamingRPC {
   __weak XCTestExpectation *expectation = [self expectationWithDescription:@"ClientStreaming"];
 
-  id request1 = [[[[RMTStreamingInputCallRequestBuilder alloc] init]
-                  setPayloadBuilder:[[[RMTPayloadBuilder alloc] init]
-                                     setBody:[NSMutableData dataWithLength:27182]]]
-                 build];
-  id request2 = [[[[RMTStreamingInputCallRequestBuilder alloc] init]
-                  setPayloadBuilder:[[[RMTPayloadBuilder alloc] init]
-                                     setBody:[NSMutableData dataWithLength:8]]]
-                 build];
-  id request3 = [[[[RMTStreamingInputCallRequestBuilder alloc] init]
-                  setPayloadBuilder:[[[RMTPayloadBuilder alloc] init]
-                                     setBody:[NSMutableData dataWithLength:1828]]]
-                 build];
-  id request4 = [[[[RMTStreamingInputCallRequestBuilder alloc] init]
-                  setPayloadBuilder:[[[RMTPayloadBuilder alloc] init]
-                                     setBody:[NSMutableData dataWithLength:45904]]]
-                 build];
+  RMTStreamingInputCallRequest *request1 = [RMTStreamingInputCallRequest message];
+  request1.payload.body = [NSMutableData dataWithLength:27182];
+
+  RMTStreamingInputCallRequest *request2 = [RMTStreamingInputCallRequest message];
+  request2.payload.body = [NSMutableData dataWithLength:8];
+
+  RMTStreamingInputCallRequest *request3 = [RMTStreamingInputCallRequest message];
+  request3.payload.body = [NSMutableData dataWithLength:1828];
+
+  RMTStreamingInputCallRequest *request4 = [RMTStreamingInputCallRequest message];
+  request4.payload.body = [NSMutableData dataWithLength:45904];
+
   id<GRXWriter> writer = [GRXWriter writerWithContainer:@[request1, request2, request3, request4]];
 
   [_service streamingInputCallWithRequestsWriter:writer
-                                         handler:^(RMTStreamingInputCallResponse *response, NSError *error) {
+                                         handler:^(RMTStreamingInputCallResponse *response,
+                                                   NSError *error) {
     XCTAssertNil(error, @"Finished with unexpected error: %@", error);
 
-    id expectedResponse = [[[[RMTStreamingInputCallResponseBuilder alloc] init]
-                            setAggregatedPayloadSize:74922]
-                           build];
+    RMTStreamingInputCallResponse *expectedResponse = [RMTStreamingInputCallResponse message];
+    expectedResponse.aggregatedPayloadSize = 74922;
     XCTAssertEqualObjects(response, expectedResponse);
 
     [expectation fulfill];
   }];
 
-  [self waitForExpectationsWithTimeout:4. handler:nil];
+  [self waitForExpectationsWithTimeout:4 handler:nil];
 }
 
 - (void)testServerStreamingRPC {
   __weak XCTestExpectation *expectation = [self expectationWithDescription:@"ServerStreaming"];
+
   NSArray *expectedSizes = @[@31415, @9, @2653, @58979];
+
+  RMTStreamingOutputCallRequest *request = [RMTStreamingOutputCallRequest message];
+  for (NSNumber *size in expectedSizes) {
+    RMTResponseParameters *parameters = [RMTResponseParameters message];
+    parameters.size = [size integerValue];
+    [request.responseParametersArray addObject:parameters];
+  }
+
   __block int index = 0;
-  id request = [[[[[[[RMTStreamingOutputCallRequestBuilder alloc] init]
-                    addResponseParameters:[[[[RMTResponseParametersBuilder alloc] init]
-                                            setSize:31415] build]]
-                   addResponseParameters:[[[[RMTResponseParametersBuilder alloc] init]
-                                           setSize:9] build]]
-                  addResponseParameters:[[[[RMTResponseParametersBuilder alloc] init]
-                                          setSize:2653] build]]
-                 addResponseParameters:[[[[RMTResponseParametersBuilder alloc] init]
-                                         setSize:58979] build]]
-                build];
-  [_service streamingOutputCallWithRequest:request handler:^(BOOL done, RMTStreamingOutputCallResponse *response, NSError *error){
+  [_service streamingOutputCallWithRequest:request
+                                   handler:^(BOOL done,
+                                             RMTStreamingOutputCallResponse *response,
+                                             NSError *error){
     XCTAssertNil(error, @"Finished with unexpected error: %@", error);
-    id expectedResponseBuilder = [[RMTStreamingOutputCallResponseBuilder alloc] init];
-    id expectedPayload = [[[[[RMTPayloadBuilder alloc] init]
-                            setType:RMTPayloadTypeCompressable]
-                           setBody:[NSMutableData dataWithLength:[expectedSizes[index] unsignedIntegerValue]]]
-                          build];
-    expectedResponseBuilder = [expectedResponseBuilder setPayload:expectedPayload];
-    id expectedResponse = [expectedResponseBuilder build];
-    XCTAssertEqualObjects(response, expectedResponse);
-    
-    [expectation fulfill];
-    index += 1;
+    XCTAssertTrue(done || response, @"Event handler called without an event.");
+
+    if (response) {
+      XCTAssertLessThan(index, 4, @"More than 4 responses received.");
+      id expected = [RMTStreamingOutputCallResponse messageWithPayloadSize:expectedSizes[index]];
+      XCTAssertEqualObjects(response, expected);
+      index += 1;
+    }
+
+    if (done) {
+      XCTAssertEqual(index, 4, @"Received %i responses instead of 4.", index);
+      [expectation fulfill];
+    }
   }];
   
   [self waitForExpectationsWithTimeout:4 handler:nil];
 }
 
+- (void)testPingPongRPC {
+  __weak XCTestExpectation *expectation = [self expectationWithDescription:@"PingPong"];
+
+  NSArray *requests = @[@27182, @8, @1828, @45904];
+  NSArray *responses = @[@31415, @9, @2653, @58979];
+
+  GRXBufferedPipe *requestsBuffer = [[GRXBufferedPipe alloc] init];
+
+  __block int index = 0;
+
+  id request = [RMTStreamingOutputCallRequest messageWithPayloadSize:requests[index]
+                                               requestedResponseSize:responses[index]];
+  [requestsBuffer didReceiveValue:request];
+
+  [_service fullDuplexCallWithRequestsWriter:requestsBuffer
+                                     handler:^(BOOL done,
+                                               RMTStreamingOutputCallResponse *response,
+                                               NSError *error) {
+    XCTAssertNil(error, @"Finished with unexpected error: %@", error);
+    XCTAssertTrue(done || response, @"Event handler called without an event.");
+
+    if (response) {
+      XCTAssertLessThan(index, 4, @"More than 4 responses received.");
+      id expected = [RMTStreamingOutputCallResponse messageWithPayloadSize:responses[index]];
+      XCTAssertEqualObjects(response, expected);
+      index += 1;
+      if (index < 4) {
+        id request = [RMTStreamingOutputCallRequest messageWithPayloadSize:requests[index]
+                                                     requestedResponseSize:responses[index]];
+        [requestsBuffer didReceiveValue:request];
+      } else {
+        [requestsBuffer didFinishWithError:nil];
+      }
+    }
+                                       
+    if (done) {
+      XCTAssertEqual(index, 4, @"Received %i responses instead of 4.", index);
+      [expectation fulfill];
+    }
+  }];
+  [self waitForExpectationsWithTimeout:2 handler:nil];
+}
+
 - (void)testEmptyStreamRPC {
   __weak XCTestExpectation *expectation = [self expectationWithDescription:@"EmptyStream"];
   [_service fullDuplexCallWithRequestsWriter:[GRXWriter emptyWriter]
-                                     handler:^(bool done, RMTStreamingOutputCallResponse *response, NSError *error) {
-                                       XCTAssertNil(error, @"Finished with unexpected error: %@", error);
-                                       XCTAssert(done, @"Unexpected response: %@", response);
-                                       [expectation fulfill];
-                                     }];
-  [self waitForExpectationsWithTimeout:4 handler:nil];
+                                     handler:^(BOOL done,
+                                               RMTStreamingOutputCallResponse *response,
+                                               NSError *error) {
+    XCTAssertNil(error, @"Finished with unexpected error: %@", error);
+    XCTAssert(done, @"Unexpected response: %@", response);
+    [expectation fulfill];
+  }];
+  [self waitForExpectationsWithTimeout:2 handler:nil];
 }
 
 - (void)testCancelAfterBeginRPC {
   __weak XCTestExpectation *expectation = [self expectationWithDescription:@"CancelAfterBegin"];
-  // TODO(mlumish): change to writing that blocks instead of writing
-  ProtoRPC *call = [_service RPCToStreamingInputCallWithRequestsWriter:[GRXWriter emptyWriter]
-                                                               handler:^(RMTStreamingInputCallResponse *response, NSError *error) {
-                                                                 XCTAssertEqual([error code], GRPC_STATUS_CANCELLED);
-                                                                 [expectation fulfill];
-                                                               }];
+
+  // A buffered pipe to which we never write any value acts as a writer that just hangs.
+  GRXBufferedPipe *requestsBuffer = [[GRXBufferedPipe alloc] init];
+
+  ProtoRPC *call = [_service RPCToStreamingInputCallWithRequestsWriter:requestsBuffer
+                                                               handler:^(RMTStreamingInputCallResponse *response,
+                                                                         NSError *error) {
+    XCTAssertEqual(error.code, GRPC_STATUS_CANCELLED);
+    [expectation fulfill];
+  }];
   [call start];
   [call cancel];
   [self waitForExpectationsWithTimeout:1 handler:nil];

src/objective-c/examples/Sample/SampleTests/RemoteTests.m

@@ -38,7 +38,7 @@
 #import <gRPC/GRPCMethodName.h>
 #import <gRPC/GRXWriter+Immediate.h>
 #import <gRPC/GRXWriteable.h>
-#import <RemoteTest/Messages.pb.h>
+#import <RemoteTest/Messages.pbobjc.h>
 
 @interface RemoteTests : XCTestCase
 @end
@@ -111,11 +111,10 @@
                                                          interface:@"TestService"
                                                             method:@"UnaryCall"];
 
-  RMTSimpleRequest *request = [[[[[[RMTSimpleRequestBuilder alloc] init]
-                                  setResponseSize:100]
-                                 setFillUsername:YES]
-                                setFillOauthScope:YES]
-                               build];
+  RMTSimpleRequest *request = [[RMTSimpleRequest alloc] init];
+  request.responseSize = 100;
+  request.fillUsername = YES;
+  request.fillOauthScope = YES;
   id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[request data]];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:@"grpc-test.sandbox.google.com"

src/objective-c/examples/Sample/SampleTests/SampleTests.m

@@ -38,7 +38,8 @@
 #import <gRPC/GRPCMethodName.h>
 #import <gRPC/GRXWriter+Immediate.h>
 #import <gRPC/GRXWriteable.h>
-#import <Route_guide/Route_guide.pb.h>
+#import <Route_guide/RouteGuide.pbobjc.h>
+#import <Route_guide/RouteGuide.pbrpc.h>
 
 @interface SampleTests : XCTestCase
 @end
@@ -105,15 +106,15 @@
 
 - (void)testSimpleProtoRPC {
   __weak XCTestExpectation *response = [self expectationWithDescription:@"Response received."];
-  __weak XCTestExpectation *expectedResponse =
-      [self expectationWithDescription:@"Expected response."];
   __weak XCTestExpectation *completion = [self expectationWithDescription:@"RPC completed."];
 
   GRPCMethodName *method = [[GRPCMethodName alloc] initWithPackage:@"grpc.example.routeguide"
                                                          interface:@"RouteGuide"
                                                             method:@"GetFeature"];
 
-  RGDPoint *point = [[[[[RGDPointBuilder alloc] init] setLatitude:28E7] setLongitude:-15E7] build];
+  RGDPoint *point = [RGDPoint message];
+  point.latitude = 28E7;
+  point.longitude = -15E7;
   id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[point data]];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:@"http://127.0.0.1:8980"
@@ -122,11 +123,10 @@
 
   id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
     XCTAssertNotNil(value, @"nil value received as response.");
-    [response fulfill];
     RGDFeature *feature = [RGDFeature parseFromData:value];
     XCTAssertEqualObjects(point, feature.location);
     XCTAssertNotNil(feature.name, @"Response's name is nil.");
-    [expectedResponse fulfill];
+    [response fulfill];
   } completionHandler:^(NSError *errorOrNil) {
     XCTAssertNil(errorOrNil, @"Finished with unexpected error: %@", errorOrNil);
     [completion fulfill];
@@ -136,4 +136,22 @@
 
   [self waitForExpectationsWithTimeout:2.0 handler:nil];
 }
+
+- (void)testSimpleProtoRPCUsingGeneratedService {
+  __weak XCTestExpectation *completion = [self expectationWithDescription:@"RPC completed."];
+
+  RGDPoint *point = [RGDPoint message];
+  point.latitude = 28E7;
+  point.longitude = -15E7;
+
+  RGDRouteGuide *service = [[RGDRouteGuide alloc] initWithHost:@"http://127.0.0.1:8980"];
+  [service getFeatureWithRequest:point handler:^(RGDFeature *response, NSError *error) {
+    XCTAssertNil(error, @"Finished with unexpected error: %@", error);
+    XCTAssertEqualObjects(point, response.location);
+    XCTAssertNotNil(response.name, @"Response's name is nil.");
+    [completion fulfill];
+  }];
+
+  [self waitForExpectationsWithTimeout:2.0 handler:nil];
+}
 @end

src/python/README.md

@@ -7,7 +7,7 @@ The Python facility of gRPC.
 Status
 -------
 
-Usable with limitations, Alpha
+Alpha : Ready for early adopters
 
 Prerequisites
 -----------------------

src/python/requirements.txt

@@ -1,3 +1,3 @@
 enum34==1.0.4
 futures==2.2.0
-protobuf==3.0.0-alpha-1
+protobuf==3.0.0a2

src/python/src/setup.py

@@ -93,6 +93,6 @@ setuptools.setup(
     install_requires=[
         'enum34==1.0.4',
         'futures==2.2.0',
-        'protobuf==3.0.0-alpha-1'
+        'protobuf==3.0.0a2'
     ]
 )

src/ruby/ext/grpc/extconf.rb

@@ -34,13 +34,25 @@ INCLUDEDIR = RbConfig::CONFIG['includedir']
 
 if ENV.key? 'GRPC_ROOT'
   GRPC_ROOT = ENV['GRPC_ROOT']
-  if ENV.key? 'GRPC_LIB_DIR'
-    GRPC_LIB_DIR = ENV['GRPC_LIB_DIR']
+else
+  grpc_root = File.expand_path(File.join(File.dirname(__FILE__), '../../../..'))
+  if File.exist?(File.join(grpc_root, 'include/grpc/grpc.h'))
+    GRPC_ROOT = grpc_root
   else
-    GRPC_LIB_DIR = 'libs/opt'
+    GRPC_ROOT = nil
   end
+end
+
+if ENV.key? 'CONFIG'
+  GRPC_CONFIG = ENV['CONFIG']
 else
-  GRPC_ROOT = nil
+  GRPC_CONFIG = 'opt'
+end
+
+if (ENV.key? 'GRPC_LIB_DIR') && (!GRPC_ROOT.nil?)
+  GRPC_LIB_DIR = File.join(GRPC_ROOT, ENV['GRPC_LIB_DIR'])
+else
+  GRPC_LIB_DIR = File.join(File.join(GRPC_ROOT, 'libs'), GRPC_CONFIG)
 end
 
 HEADER_DIRS = [
@@ -67,7 +79,10 @@ LIB_DIRS = [
 
 unless GRPC_ROOT.nil?
   HEADER_DIRS.unshift File.join(GRPC_ROOT, 'include')
-  LIB_DIRS.unshift File.join(GRPC_ROOT, GRPC_LIB_DIR)
+  LIB_DIRS.unshift GRPC_LIB_DIR
+  unless File.exist?(File.join(GRPC_LIB_DIR, 'libgrpc.a'))
+    system("make -C #{GRPC_ROOT} static_c CONFIG=#{GRPC_CONFIG}")
+  end
 end
 
 def crash(msg)

src/ruby/ext/grpc/rb_byte_buffer.c

@@ -33,7 +33,7 @@
 
 #include "rb_byte_buffer.h"
 
-#include <ruby.h>
+#include <ruby/ruby.h>
 
 #include <grpc/grpc.h>
 #include <grpc/support/slice.h>

src/ruby/ext/grpc/rb_byte_buffer.h

@@ -34,8 +34,9 @@
 #ifndef GRPC_RB_BYTE_BUFFER_H_
 #define GRPC_RB_BYTE_BUFFER_H_
 
+#include <ruby/ruby.h>
+
 #include <grpc/grpc.h>
-#include <ruby.h>
 
 /* Converts a char* with a length to a grpc_byte_buffer */
 grpc_byte_buffer *grpc_rb_s_to_byte_buffer(char *string, size_t length);

src/ruby/ext/grpc/rb_call.c

@@ -33,7 +33,7 @@
 
 #include "rb_call.h"
 
-#include <ruby.h>
+#include <ruby/ruby.h>
 
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>

src/ruby/ext/grpc/rb_call.h

@@ -34,8 +34,9 @@
 #ifndef GRPC_RB_CALL_H_
 #define GRPC_RB_CALL_H_
 
+#include <ruby/ruby.h>
+
 #include <grpc/grpc.h>
-#include <ruby.h>
 
 /* Gets the wrapped call from a VALUE. */
 grpc_call* grpc_rb_get_wrapped_call(VALUE v);

src/ruby/ext/grpc/rb_channel.c

@@ -33,7 +33,7 @@
 
 #include "rb_channel.h"
 
-#include <ruby.h>
+#include <ruby/ruby.h>
 
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>

src/ruby/ext/grpc/rb_channel.h

@@ -34,7 +34,8 @@
 #ifndef GRPC_RB_CHANNEL_H_
 #define GRPC_RB_CHANNEL_H_
 
-#include <ruby.h>
+#include <ruby/ruby.h>
+
 #include <grpc/grpc.h>
 
 /* Initializes the Channel class. */

src/ruby/ext/grpc/rb_channel_args.c

@@ -33,7 +33,8 @@
 
 #include "rb_channel_args.h"
 
-#include <ruby.h>
+#include <ruby/ruby.h>
+
 #include <grpc/grpc.h>
 
 #include "rb_grpc.h"

src/ruby/ext/grpc/rb_channel_args.h

@@ -34,7 +34,8 @@
 #ifndef GRPC_RB_CHANNEL_ARGS_H_
 #define GRPC_RB_CHANNEL_ARGS_H_
 
-#include <ruby.h>
+#include <ruby/ruby.h>
+
 #include <grpc/grpc.h>
 
 /* Converts a hash object containing channel args to a channel args instance.

src/ruby/ext/grpc/rb_completion_queue.h

@@ -34,8 +34,9 @@
 #ifndef GRPC_RB_COMPLETION_QUEUE_H_
 #define GRPC_RB_COMPLETION_QUEUE_H_
 
+#include <ruby/ruby.h>
+
 #include <grpc/grpc.h>
-#include <ruby.h>
 
 /* Gets the wrapped completion queue from the ruby wrapper */
 grpc_completion_queue *grpc_rb_get_wrapped_completion_queue(VALUE v);

src/ruby/ext/grpc/rb_credentials.c

@@ -33,7 +33,7 @@
 
 #include "rb_credentials.h"
 
-#include <ruby.h>
+#include <ruby/ruby.h>
 
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>

src/ruby/ext/grpc/rb_credentials.h

@@ -34,7 +34,8 @@
 #ifndef GRPC_RB_CREDENTIALS_H_
 #define GRPC_RB_CREDENTIALS_H_
 
-#include <ruby.h>
+#include <ruby/ruby.h>
+
 #include <grpc/grpc_security.h>
 
 /* Initializes the ruby Credentials class. */

src/ruby/ext/grpc/rb_grpc.h

@@ -35,7 +35,8 @@
 #define GRPC_RB_H_
 
 #include <sys/time.h>
-#include <ruby.h>
+#include <ruby/ruby.h>
+
 #include <grpc/support/time.h>
 
 /* grpc_rb_mGrpcCore is the module containing the ruby wrapper GRPC classes. */

src/ruby/ext/grpc/rb_server.c

@@ -33,7 +33,7 @@
 
 #include "rb_server.h"
 
-#include <ruby.h>
+#include <ruby/ruby.h>
 
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>

src/ruby/ext/grpc/rb_server.h

@@ -34,7 +34,8 @@
 #ifndef GRPC_RB_SERVER_H_
 #define GRPC_RB_SERVER_H_
 
-#include <ruby.h>
+#include <ruby/ruby.h>
+
 #include <grpc/grpc.h>
 
 /* Initializes the Server class. */

src/ruby/ext/grpc/rb_server_credentials.c

@@ -33,7 +33,7 @@
 
 #include "rb_server_credentials.h"
 
-#include <ruby.h>
+#include <ruby/ruby.h>
 
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>

src/ruby/ext/grpc/rb_server_credentials.h

@@ -34,7 +34,8 @@
 #ifndef GRPC_RB_SERVER_CREDENTIALS_H_
 #define GRPC_RB_SERVER_CREDENTIALS_H_
 
-#include <ruby.h>
+#include <ruby/ruby.h>
+
 #include <grpc/grpc_security.h>
 
 /* Initializes the ruby ServerCredentials class. */

test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c

@@ -0,0 +1,156 @@
+/*
+ *
+ * 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/end2end/end2end_tests.h"
+
+#include <string.h>
+
+#include "src/core/channel/client_channel.h"
+#include "src/core/channel/connected_channel.h"
+#include "src/core/channel/http_client_filter.h"
+#include "src/core/channel/http_server_filter.h"
+#include "src/core/iomgr/endpoint_pair.h"
+#include "src/core/iomgr/iomgr.h"
+#include "src/core/support/env.h"
+#include "src/core/surface/channel.h"
+#include "src/core/surface/client.h"
+#include "src/core/surface/server.h"
+#include "src/core/transport/chttp2_transport.h"
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/useful.h>
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+/* chttp2 transport that is immediately available (used for testing
+   connected_channel without a client_channel */
+
+static grpc_transport_setup_result server_setup_transport(
+    void *ts, grpc_transport *transport, grpc_mdctx *mdctx) {
+  grpc_end2end_test_fixture *f = ts;
+  static grpc_channel_filter const *extra_filters[] = {
+      &grpc_http_server_filter};
+  return grpc_server_setup_transport(f->server, transport, extra_filters,
+                                     GPR_ARRAY_SIZE(extra_filters), mdctx);
+}
+
+typedef struct {
+  grpc_end2end_test_fixture *f;
+  grpc_channel_args *client_args;
+} sp_client_setup;
+
+static grpc_transport_setup_result client_setup_transport(
+    void *ts, grpc_transport *transport, grpc_mdctx *mdctx) {
+  sp_client_setup *cs = ts;
+
+  const grpc_channel_filter *filters[] = {&grpc_client_surface_filter,
+                                          &grpc_http_client_filter,
+                                          &grpc_connected_channel_filter};
+  size_t nfilters = sizeof(filters) / sizeof(*filters);
+  grpc_channel *channel = grpc_channel_create_from_filters(
+      filters, nfilters, cs->client_args, mdctx, 1);
+
+  cs->f->client = channel;
+
+  return grpc_connected_channel_bind_transport(
+      grpc_channel_get_channel_stack(channel), transport);
+}
+
+static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
+    grpc_channel_args *client_args, grpc_channel_args *server_args) {
+  grpc_endpoint_pair *sfd = gpr_malloc(sizeof(grpc_endpoint_pair));
+
+  grpc_end2end_test_fixture f;
+  memset(&f, 0, sizeof(f));
+  f.fixture_data = sfd;
+  f.client_cq = grpc_completion_queue_create();
+  f.server_cq = grpc_completion_queue_create();
+
+  *sfd = grpc_iomgr_create_endpoint_pair(65536);
+
+  return f;
+}
+
+static void chttp2_init_client_socketpair(grpc_end2end_test_fixture *f,
+                                          grpc_channel_args *client_args) {
+  grpc_endpoint_pair *sfd = f->fixture_data;
+  sp_client_setup cs;
+  cs.client_args = client_args;
+  cs.f = f;
+  grpc_create_chttp2_transport(client_setup_transport, &cs, client_args,
+                               sfd->client, NULL, 0, grpc_mdctx_create(), 1);
+  GPR_ASSERT(f->client);
+}
+
+static void chttp2_init_server_socketpair(grpc_end2end_test_fixture *f,
+                                          grpc_channel_args *server_args) {
+  grpc_endpoint_pair *sfd = f->fixture_data;
+  GPR_ASSERT(!f->server);
+  f->server = grpc_server_create_from_filters(NULL, 0, server_args);
+  grpc_server_register_completion_queue(f->server, f->server_cq);
+  grpc_server_start(f->server);
+  grpc_create_chttp2_transport(server_setup_transport, f, server_args,
+                               sfd->server, NULL, 0, grpc_mdctx_create(), 0);
+}
+
+static void chttp2_tear_down_socketpair(grpc_end2end_test_fixture *f) {
+  gpr_free(f->fixture_data);
+}
+
+/* All test configurations */
+static grpc_end2end_test_config configs[] = {
+    {"chttp2/socketpair", 0, chttp2_create_fixture_socketpair,
+     chttp2_init_client_socketpair, chttp2_init_server_socketpair,
+     chttp2_tear_down_socketpair},
+};
+
+int main(int argc, char **argv) {
+  size_t i;
+
+  /* force tracing on, with a value to force many
+     code paths in trace.c to be taken */
+  gpr_setenv("GRPC_TRACE", "doesnt-exist,http,all");
+
+  grpc_test_init(argc, argv);
+  grpc_init();
+
+  for (i = 0; i < sizeof(configs) / sizeof(*configs); i++) {
+    grpc_end2end_tests(configs[i]);
+  }
+
+  grpc_shutdown();
+
+  return 0;
+}

test/core/end2end/gen_build_json.py

@@ -49,6 +49,7 @@ END2END_FIXTURES = {
     'chttp2_simple_ssl_with_oauth2_fullstack': default_secure_fixture_options,
     'chttp2_socket_pair': default_unsecure_fixture_options,
     'chttp2_socket_pair_one_byte_at_a_time': default_unsecure_fixture_options,
+    'chttp2_socket_pair_with_grpc_trace': default_unsecure_fixture_options,
 }
 
 TestOptions = collections.namedtuple('TestOptions', 'flaky secure')

test/cpp/client/credentials_test.cc

@@ -46,8 +46,7 @@ class CredentialsTest : public ::testing::Test {
 };
 
 TEST_F(CredentialsTest, InvalidServiceAccountCreds) {
-  std::unique_ptr<Credentials> bad1 =
-      ServiceAccountCredentials("", "", 1);
+  std::shared_ptr<Credentials> bad1 = ServiceAccountCredentials("", "", 1);
   EXPECT_EQ(nullptr, bad1.get());
 }
 

test/cpp/end2end/end2end_test.cc

@@ -33,11 +33,13 @@
 
 #include <thread>
 
+#include "src/core/security/credentials.h"
+#include "src/cpp/server/thread_pool.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 #include "test/cpp/util/echo_duplicate.grpc.pb.h"
 #include "test/cpp/util/echo.grpc.pb.h"
-#include "src/cpp/server/thread_pool.h"
+#include "test/cpp/util/fake_credentials.h"
 #include <grpc++/channel_arguments.h>
 #include <grpc++/channel_interface.h>
 #include <grpc++/client_context.h>
@@ -106,6 +108,16 @@ class TestServiceImpl : public ::grpc::cpp::test::util::TestService::Service {
     } else {
       EXPECT_FALSE(context->IsCancelled());
     }
+
+    if (request->has_param() && request->param().echo_metadata()) {
+      const std::multimap<grpc::string, grpc::string>& client_metadata =
+          context->client_metadata();
+      for (std::multimap<grpc::string, grpc::string>::const_iterator iter =
+               client_metadata.begin();
+           iter != client_metadata.end(); ++iter) {
+        context->AddTrailingMetadata((*iter).first, (*iter).second);
+      }
+    }
     return Status::OK;
   }
 
@@ -180,7 +192,7 @@ class End2endTest : public ::testing::Test {
     // Setup server
     ServerBuilder builder;
     builder.AddListeningPort(server_address_.str(),
-                             InsecureServerCredentials());
+                             FakeTransportSecurityServerCredentials());
     builder.RegisterService(&service_);
     builder.SetMaxMessageSize(
         kMaxMessageSize_);  // For testing max message size.
@@ -192,8 +204,9 @@ class End2endTest : public ::testing::Test {
   void TearDown() GRPC_OVERRIDE { server_->Shutdown(); }
 
   void ResetStub() {
-    std::shared_ptr<ChannelInterface> channel = CreateChannel(
-        server_address_.str(), InsecureCredentials(), ChannelArguments());
+    std::shared_ptr<ChannelInterface> channel =
+        CreateChannel(server_address_.str(), FakeTransportSecurityCredentials(),
+                      ChannelArguments());
     stub_ = std::move(grpc::cpp::test::util::TestService::NewStub(channel));
   }
 
@@ -404,8 +417,9 @@ TEST_F(End2endTest, BidiStream) {
 // Talk to the two services with the same name but different package names.
 // The two stubs are created on the same channel.
 TEST_F(End2endTest, DiffPackageServices) {
-  std::shared_ptr<ChannelInterface> channel = CreateChannel(
-      server_address_.str(), InsecureCredentials(), ChannelArguments());
+  std::shared_ptr<ChannelInterface> channel =
+      CreateChannel(server_address_.str(), FakeTransportSecurityCredentials(),
+                    ChannelArguments());
 
   EchoRequest request;
   EchoResponse response;
@@ -429,7 +443,7 @@ TEST_F(End2endTest, DiffPackageServices) {
 
 // rpc and stream should fail on bad credentials.
 TEST_F(End2endTest, BadCredentials) {
-  std::unique_ptr<Credentials> bad_creds = ServiceAccountCredentials("", "", 1);
+  std::shared_ptr<Credentials> bad_creds = ServiceAccountCredentials("", "", 1);
   EXPECT_EQ(nullptr, bad_creds.get());
   std::shared_ptr<ChannelInterface> channel =
       CreateChannel(server_address_.str(), bad_creds, ChannelArguments());
@@ -438,7 +452,7 @@ TEST_F(End2endTest, BadCredentials) {
   EchoRequest request;
   EchoResponse response;
   ClientContext context;
-  grpc::string msg("hello");
+  request.set_message("Hello");
 
   Status s = stub->Echo(&context, request, &response);
   EXPECT_EQ("", response.message());
@@ -588,6 +602,88 @@ TEST_F(End2endTest, RpcMaxMessageSize) {
   EXPECT_FALSE(s.IsOk());
 }
 
+bool MetadataContains(const std::multimap<grpc::string, grpc::string>& metadata,
+                      const grpc::string& key, const grpc::string& value) {
+  int count = 0;
+
+  for (std::multimap<grpc::string, grpc::string>::const_iterator iter =
+           metadata.begin();
+       iter != metadata.end(); ++iter) {
+    if ((*iter).first == key && (*iter).second == value) {
+      count++;
+    }
+  }
+  return count == 1;
+}
+
+TEST_F(End2endTest, SetPerCallCredentials) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+  std::shared_ptr<Credentials> creds =
+      IAMCredentials("fake_token", "fake_selector");
+  context.set_credentials(creds);
+  request.set_message("Hello");
+  request.mutable_param()->set_echo_metadata(true);
+
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(request.message(), response.message());
+  EXPECT_TRUE(s.IsOk());
+  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
+                               GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                               "fake_token"));
+  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
+                               GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                               "fake_selector"));
+}
+
+TEST_F(End2endTest, InsecurePerCallCredentials) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+  std::shared_ptr<Credentials> creds = InsecureCredentials();
+  context.set_credentials(creds);
+  request.set_message("Hello");
+  request.mutable_param()->set_echo_metadata(true);
+
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(StatusCode::CANCELLED, s.code());
+  EXPECT_EQ("Failed to set credentials to rpc.", s.details());
+}
+
+TEST_F(End2endTest, OverridePerCallCredentials) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+  std::shared_ptr<Credentials> creds1 =
+      IAMCredentials("fake_token1", "fake_selector1");
+  context.set_credentials(creds1);
+  std::shared_ptr<Credentials> creds2 =
+      IAMCredentials("fake_token2", "fake_selector2");
+  context.set_credentials(creds2);
+  request.set_message("Hello");
+  request.mutable_param()->set_echo_metadata(true);
+
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
+                               GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                               "fake_token2"));
+  EXPECT_TRUE(MetadataContains(context.GetServerTrailingMetadata(),
+                               GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                               "fake_selector2"));
+  EXPECT_FALSE(MetadataContains(context.GetServerTrailingMetadata(),
+                                GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                                "fake_token1"));
+  EXPECT_FALSE(MetadataContains(context.GetServerTrailingMetadata(),
+                                GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                                "fake_selector1"));
+  EXPECT_EQ(request.message(), response.message());
+  EXPECT_TRUE(s.IsOk());
+}
+
 }  // namespace testing
 }  // namespace grpc
 

test/cpp/interop/client_helper.cc

@@ -82,7 +82,7 @@ std::shared_ptr<ChannelInterface> CreateChannelForTestCase(
            FLAGS_server_port);
 
   if (test_case == "service_account_creds") {
-    std::unique_ptr<Credentials> creds;
+    std::shared_ptr<Credentials> creds;
     GPR_ASSERT(FLAGS_enable_ssl);
     grpc::string json_key = GetServiceAccountJsonKey();
     std::chrono::seconds token_lifetime = std::chrono::hours(1);
@@ -91,13 +91,13 @@ std::shared_ptr<ChannelInterface> CreateChannelForTestCase(
     return CreateTestChannel(host_port, FLAGS_server_host_override,
                              FLAGS_enable_ssl, FLAGS_use_prod_roots, creds);
   } else if (test_case == "compute_engine_creds") {
-    std::unique_ptr<Credentials> creds;
+    std::shared_ptr<Credentials> creds;
     GPR_ASSERT(FLAGS_enable_ssl);
     creds = ComputeEngineCredentials();
     return CreateTestChannel(host_port, FLAGS_server_host_override,
                              FLAGS_enable_ssl, FLAGS_use_prod_roots, creds);
   } else if (test_case == "jwt_token_creds") {
-    std::unique_ptr<Credentials> creds;
+    std::shared_ptr<Credentials> creds;
     GPR_ASSERT(FLAGS_enable_ssl);
     grpc::string json_key = GetServiceAccountJsonKey();
     std::chrono::seconds token_lifetime = std::chrono::hours(1);

test/cpp/util/create_test_channel.cc

@@ -58,13 +58,13 @@ namespace grpc {
 std::shared_ptr<ChannelInterface> CreateTestChannel(
     const grpc::string& server, const grpc::string& override_hostname,
     bool enable_ssl, bool use_prod_roots,
-    const std::unique_ptr<Credentials>& creds) {
+    const std::shared_ptr<Credentials>& creds) {
   ChannelArguments channel_args;
   if (enable_ssl) {
     const char* roots_certs = use_prod_roots ? "" : test_root_cert;
     SslCredentialsOptions ssl_opts = {roots_certs, "", ""};
 
-    std::unique_ptr<Credentials> channel_creds = SslCredentials(ssl_opts);
+    std::shared_ptr<Credentials> channel_creds = SslCredentials(ssl_opts);
 
     if (!server.empty() && !override_hostname.empty()) {
       channel_args.SetSslTargetNameOverride(override_hostname);
@@ -84,7 +84,7 @@ std::shared_ptr<ChannelInterface> CreateTestChannel(
     const grpc::string& server, const grpc::string& override_hostname,
     bool enable_ssl, bool use_prod_roots) {
   return CreateTestChannel(server, override_hostname, enable_ssl,
-                           use_prod_roots, std::unique_ptr<Credentials>());
+                           use_prod_roots, std::shared_ptr<Credentials>());
 }
 
 // Shortcut for end2end and interop tests.

test/cpp/util/create_test_channel.h

@@ -52,7 +52,7 @@ std::shared_ptr<ChannelInterface> CreateTestChannel(
 std::shared_ptr<ChannelInterface> CreateTestChannel(
     const grpc::string& server, const grpc::string& override_hostname,
     bool enable_ssl, bool use_prod_roots,
-    const std::unique_ptr<Credentials>& creds);
+    const std::shared_ptr<Credentials>& creds);
 
 }  // namespace grpc
 

test/cpp/util/fake_credentials.cc

@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/grpc_security.h>
+#include <grpc++/channel_arguments.h>
+#include <grpc++/credentials.h>
+#include <grpc++/server_credentials.h>
+#include "src/cpp/client/channel.h"
+#include "src/cpp/client/secure_credentials.h"
+#include "src/cpp/server/secure_server_credentials.h"
+
+namespace grpc {
+namespace testing {
+
+std::shared_ptr<Credentials> FakeTransportSecurityCredentials() {
+  grpc_credentials* c_creds = grpc_fake_transport_security_credentials_create();
+  return std::shared_ptr<Credentials>(new SecureCredentials(c_creds));
+}
+
+std::shared_ptr<ServerCredentials> FakeTransportSecurityServerCredentials() {
+  grpc_server_credentials* c_creds =
+      grpc_fake_transport_security_server_credentials_create();
+  return std::shared_ptr<ServerCredentials>(
+      new SecureServerCredentials(c_creds));
+}
+
+}  // namespace testing
+}  // namespace grpc

test/cpp/util/fake_credentials.h

@@ -31,37 +31,21 @@
  *
  */
 
-#ifndef GRPC_GRPC_HTTP_H
-#define GRPC_GRPC_HTTP_H
+#ifndef GRPC_TEST_CPP_UTIL_FAKE_CREDENTIALS_H
+#define GRPC_TEST_CPP_UTIL_FAKE_CREDENTIALS_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+#include <memory>
 
-/* HTTP GET support.
+namespace grpc {
+class Credentials;
+class ServerCredentials;
 
-   HTTP2 servers can publish statically generated text content served
-   via HTTP2 GET queries by publishing one or more grpc_http_server_page
-   elements via repeated GRPC_ARG_SERVE_OVER_HTTP elements in the servers
-   channel_args.
+namespace testing {
 
-   This is not:
-    - a general purpose web server
-    - particularly fast
+std::shared_ptr<Credentials> FakeTransportSecurityCredentials();
+std::shared_ptr<ServerCredentials> FakeTransportSecurityServerCredentials();
 
-   It's useful for being able to serve up some static content (maybe some
-   javascript to be able to interact with your GRPC server?) */
+}  // namespace testing
+}  // namespace grpc
 
-typedef struct {
-  const char *path;
-  const char *content_type;
-  const char *content;
-} grpc_http_server_page;
-
-#define GRPC_ARG_SERVE_OVER_HTTP "grpc.serve_over_http"
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  /* GRPC_GRPC_HTTP_H */
+#endif  // GRPC_TEST_CPP_UTIL_FAKE_CREDENTIALS_H

test/cpp/util/grpc_cli.cc

@@ -104,7 +104,7 @@ int main(int argc, char** argv) {
   std::stringstream input_stream;
   input_stream << input_file.rdbuf();
 
-  std::unique_ptr<grpc::Credentials> creds;
+  std::shared_ptr<grpc::Credentials> creds;
   if (!FLAGS_enable_ssl) {
     creds = grpc::InsecureCredentials();
   } else {

test/cpp/util/messages.proto

@@ -36,6 +36,7 @@ message RequestParams {
   optional bool echo_deadline = 1;
   optional int32 client_cancel_after_us = 2;
   optional int32 server_cancel_after_us = 3;
+  optional bool echo_metadata = 4;
 }
 
 message EchoRequest {

third_party/protobuf

@@ -1 +1 @@
-Subproject commit 644a6a1da71385e9d7a7a26b3476c93fdd71788c
+Subproject commit a8b38c598d7f65b281a72809b28117afdb760931

tools/dockerfile/grpc_node/build.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+cp -R /var/local/git-clone/grpc /var/local/git
+
+make clean -C /var/local/git/grpc
+
+make install_c -j12 -C /var/local/git/grpc
+
+cd /var/local/git/grpc/src/node && npm install && node-gyp rebuild

tools/dockerfile/grpc_python_base/Dockerfile

@@ -43,7 +43,7 @@ RUN apt-get update && apt-get install -y \
     python-virtualenv
 
 # Install Python packages from PyPI
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.0.0-alpha-1
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.0.0a2
 
 # Get the GRPC source from GitHub
 RUN git clone --recursive https://github.com/grpc/grpc.git /var/local/git/grpc

tools/dockerfile/grpc_ruby/build.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+cp -R /var/local/git-clone/grpc /var/local/git
+
+make clean -C /var/local/git/grpc
+
+make install_c -j12 -C /var/local/git/grpc
+
+/bin/bash -l -c 'cd /var/local/git/grpc/src/ruby && gem update bundler && bundle && rake'

tools/gce_setup/grpc_docker.sh

@@ -428,6 +428,7 @@ grpc_interop_test_args() {
       python)       grpc_port=8050 ;;
       ruby)         grpc_port=8060 ;;
       csharp_mono)  grpc_port=8070 ;;
+      csharp_dotnet) grpc_port=8070 ;;
       *) echo "bad server_type: $1" 1>&2; return 1 ;;
     esac
     shift
@@ -870,6 +871,23 @@ grpc_launch_servers() {
   done
 }
 
+# Launch servers on windows.
+grpc_launch_windows_servers() {
+   local host='jtattermusch-interop-windows2'
+   local killcmd="ps -e | grep Grpc.IntegrationTesting | awk '{print \\\$1}' | xargs kill -9"
+   echo "killing all servers and clients on $host with command $killcmd"
+   gcloud compute $project_opt ssh $zone_opt stoked-keyword-656@grpc-windows-proxy --command "ssh $host \"$killcmd\""
+
+   local cmd='cd /cygdrive/c/github/grpc/src/csharp/Grpc.IntegrationTesting.Server/bin/Debug && ./Grpc.IntegrationTesting.Server.exe --use_tls=true --port=8070'
+   # gcloud's auto-uploading of RSA keys doesn't work for Windows VMs.
+   # So we have a linux machine that is authorized to access the Windows
+   # machine through ssh and we use gcloud auth support to logon to the proxy.
+   echo "will run:"
+   echo "  $cmd"
+   echo "on $host (through grpc-windows-proxy)"
+   gcloud compute $project_opt ssh $zone_opt stoked-keyword-656@grpc-windows-proxy --command "ssh $host '$cmd'"
+}
+
 # Runs a test command on a docker instance
 #
 # The test command is issued via gcloud compute
@@ -949,6 +967,7 @@ test_runner() {
 #   node:   8040
 #   python: 8050
 #   ruby:   8060
+#   csharp: 8070
 #
 # each client_type should have an associated bash func:
 #   grpc_interop_gen_<client_type>_cmd

tools/run_tests/build_python.sh

@@ -37,6 +37,6 @@ root=`pwd`
 rm -rf python2.7_virtual_environment
 virtualenv -p /usr/bin/python2.7 python2.7_virtual_environment
 source python2.7_virtual_environment/bin/activate
-pip install enum34==1.0.4 futures==2.2.0 protobuf==3.0.0-alpha-1
+pip install enum34==1.0.4 futures==2.2.0 protobuf==3.0.0a2
 CFLAGS=-I$root/include LDFLAGS=-L$root/libs/$CONFIG pip install src/python/src
 pip install src/python/interop

tools/run_tests/build_ruby.sh

@@ -31,17 +31,10 @@
 
 set -ex
 
-CONFIG=${CONFIG:-opt}
+export CONFIG=${CONFIG:-opt}
 
-# change to grpc repo root
-cd $(dirname $0)/../..
-
-# tells npm install to look for files in that directory
-export GRPC_ROOT=`pwd`
-# tells npm install the subdirectory with library files
-export GRPC_LIB_SUBDIR=libs/$CONFIG
-
-cd src/ruby
+# change to grpc's ruby directory
+cd $(dirname $0)/../../src/ruby
 
 bundle install
 rake compile:grpc

tools/run_tests/run_sanity.sh

@@ -45,6 +45,6 @@ git submodule > $submodules
 diff -u $submodules - << EOF
  05b155ff59114735ec8cd089f669c4c3d8f59029 third_party/gflags (v2.1.0-45-g05b155f)
  3df69d3aefde7671053d4e3c242b228e5d79c83f third_party/openssl (OpenSSL_1_0_2a)
- 644a6a1da71385e9d7a7a26b3476c93fdd71788c third_party/protobuf (v3.0.0-alpha-1-35-g644a6a1)
+ a8b38c598d7f65b281a72809b28117afdb760931 third_party/protobuf (v3.0.0-alpha-1-978-ga8b38c5)
  50893291621658f355bc5b4d450a8d06a563053d third_party/zlib (v1.2.8)
 EOF

tools/run_tests/run_tests.py

@@ -214,7 +214,7 @@ class RubyLanguage(object):
     return [config.job_spec(['tools/run_tests/run_ruby.sh'], None)]
 
   def make_targets(self):
-    return ['static_c']
+    return ['run_dep_checks']
 
   def build_steps(self):
     return [['tools/run_tests/build_ruby.sh']]