Merge branch 'master' into untypedAPI
diff --git a/Makefile b/Makefile
index 8c6fc32..d228adc 100644
--- a/Makefile
+++ b/Makefile
@@ -3105,17 +3105,22 @@
     src/cpp/common/completion_queue.cc \
     src/cpp/common/rpc_method.cc \
     src/cpp/proto/proto_utils.cc \
+    src/cpp/server/anonymous_service.cc \
     src/cpp/server/insecure_server_credentials.cc \
     src/cpp/server/server.cc \
     src/cpp/server/server_builder.cc \
     src/cpp/server/server_context.cc \
     src/cpp/server/server_credentials.cc \
     src/cpp/server/thread_pool.cc \
+    src/cpp/util/byte_buffer.cc \
+    src/cpp/util/slice.cc \
     src/cpp/util/status.cc \
     src/cpp/util/time.cc \
 
 PUBLIC_HEADERS_CXX += \
+    include/grpc++/anonymous_service.h \
     include/grpc++/async_unary_call.h \
+    include/grpc++/byte_buffer.h \
     include/grpc++/channel_arguments.h \
     include/grpc++/channel_interface.h \
     include/grpc++/client_context.h \
@@ -3133,6 +3138,7 @@
     include/grpc++/server_builder.h \
     include/grpc++/server_context.h \
     include/grpc++/server_credentials.h \
+    include/grpc++/slice.h \
     include/grpc++/status.h \
     include/grpc++/status_code_enum.h \
     include/grpc++/stream.h \
@@ -3186,12 +3192,15 @@
 src/cpp/common/completion_queue.cc: $(OPENSSL_DEP)
 src/cpp/common/rpc_method.cc: $(OPENSSL_DEP)
 src/cpp/proto/proto_utils.cc: $(OPENSSL_DEP)
+src/cpp/server/anonymous_service.cc: $(OPENSSL_DEP)
 src/cpp/server/insecure_server_credentials.cc: $(OPENSSL_DEP)
 src/cpp/server/server.cc: $(OPENSSL_DEP)
 src/cpp/server/server_builder.cc: $(OPENSSL_DEP)
 src/cpp/server/server_context.cc: $(OPENSSL_DEP)
 src/cpp/server/server_credentials.cc: $(OPENSSL_DEP)
 src/cpp/server/thread_pool.cc: $(OPENSSL_DEP)
+src/cpp/util/byte_buffer.cc: $(OPENSSL_DEP)
+src/cpp/util/slice.cc: $(OPENSSL_DEP)
 src/cpp/util/status.cc: $(OPENSSL_DEP)
 src/cpp/util/time.cc: $(OPENSSL_DEP)
 endif
@@ -3249,12 +3258,15 @@
 $(OBJDIR)/$(CONFIG)/src/cpp/common/completion_queue.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/common/rpc_method.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/proto/proto_utils.o: 
+$(OBJDIR)/$(CONFIG)/src/cpp/server/anonymous_service.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/insecure_server_credentials.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/server.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/server_builder.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/server_context.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/server_credentials.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/thread_pool.o: 
+$(OBJDIR)/$(CONFIG)/src/cpp/util/byte_buffer.o: 
+$(OBJDIR)/$(CONFIG)/src/cpp/util/slice.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/util/status.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/util/time.o: 
 
@@ -3337,17 +3349,22 @@
     src/cpp/common/completion_queue.cc \
     src/cpp/common/rpc_method.cc \
     src/cpp/proto/proto_utils.cc \
+    src/cpp/server/anonymous_service.cc \
     src/cpp/server/insecure_server_credentials.cc \
     src/cpp/server/server.cc \
     src/cpp/server/server_builder.cc \
     src/cpp/server/server_context.cc \
     src/cpp/server/server_credentials.cc \
     src/cpp/server/thread_pool.cc \
+    src/cpp/util/byte_buffer.cc \
+    src/cpp/util/slice.cc \
     src/cpp/util/status.cc \
     src/cpp/util/time.cc \
 
 PUBLIC_HEADERS_CXX += \
+    include/grpc++/anonymous_service.h \
     include/grpc++/async_unary_call.h \
+    include/grpc++/byte_buffer.h \
     include/grpc++/channel_arguments.h \
     include/grpc++/channel_interface.h \
     include/grpc++/client_context.h \
@@ -3365,6 +3382,7 @@
     include/grpc++/server_builder.h \
     include/grpc++/server_context.h \
     include/grpc++/server_credentials.h \
+    include/grpc++/slice.h \
     include/grpc++/status.h \
     include/grpc++/status_code_enum.h \
     include/grpc++/stream.h \
@@ -3433,12 +3451,15 @@
 $(OBJDIR)/$(CONFIG)/src/cpp/common/completion_queue.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/common/rpc_method.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/proto/proto_utils.o: 
+$(OBJDIR)/$(CONFIG)/src/cpp/server/anonymous_service.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/insecure_server_credentials.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/server.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/server_builder.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/server_context.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/server_credentials.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/server/thread_pool.o: 
+$(OBJDIR)/$(CONFIG)/src/cpp/util/byte_buffer.o: 
+$(OBJDIR)/$(CONFIG)/src/cpp/util/slice.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/util/status.o: 
 $(OBJDIR)/$(CONFIG)/src/cpp/util/time.o: 
 
diff --git a/build.json b/build.json
index c9500eb..eeb0755 100644
--- a/build.json
+++ b/build.json
@@ -12,7 +12,9 @@
     {
       "name": "grpc++_base",
       "public_headers": [
+        "include/grpc++/anonymous_service.h",
         "include/grpc++/async_unary_call.h",
+        "include/grpc++/byte_buffer.h",
         "include/grpc++/channel_arguments.h",
         "include/grpc++/channel_interface.h",
         "include/grpc++/client_context.h",
@@ -30,6 +32,7 @@
         "include/grpc++/server_builder.h",
         "include/grpc++/server_context.h",
         "include/grpc++/server_credentials.h",
+        "include/grpc++/slice.h",
         "include/grpc++/status.h",
         "include/grpc++/status_code_enum.h",
         "include/grpc++/stream.h",
@@ -54,12 +57,15 @@
         "src/cpp/common/completion_queue.cc",
         "src/cpp/common/rpc_method.cc",
         "src/cpp/proto/proto_utils.cc",
+        "src/cpp/server/anonymous_service.cc",
         "src/cpp/server/insecure_server_credentials.cc",
         "src/cpp/server/server.cc",
         "src/cpp/server/server_builder.cc",
         "src/cpp/server/server_context.cc",
         "src/cpp/server/server_credentials.cc",
         "src/cpp/server/thread_pool.cc",
+        "src/cpp/util/byte_buffer.cc",
+        "src/cpp/util/slice.cc",
         "src/cpp/util/status.cc",
         "src/cpp/util/time.cc"
       ]
diff --git a/include/grpc++/anonymous_service.h b/include/grpc++/anonymous_service.h
new file mode 100644
index 0000000..78903db
--- /dev/null
+++ b/include/grpc++/anonymous_service.h
@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPCXX_ANONYMOUS_SERVICE_H
+#define GRPCXX_ANONYMOUS_SERVICE_H
+
+#include <grpc++/byte_buffer.h>
+#include <grpc++/stream.h>
+
+struct grpc_server;
+
+namespace grpc {
+
+typedef ServerAsyncReaderWriter<ByteBuffer, ByteBuffer> GenericServerReaderWriter;
+
+class AnonymousServerContext : public ServerContext {
+ public:
+  const grpc::string& method() const { return method_; }
+  const grpc::string& host() const { return host_; }
+
+ private:
+  friend class Server;
+
+  grpc::string method_;
+  grpc::string host_;
+};
+
+class AnonymousService {
+ public:
+  // TODO(yangg) Once we can add multiple completion queues to the server
+  // in c core, add a CompletionQueue* argument to the ctor here.
+  AnonymousService() : server_(nullptr) {}
+
+  void RequestCall(AnonymousServerContext* ctx,
+                   GenericServerReaderWriter* reader_writer,
+                   CompletionQueue* cq, void* tag);
+
+ private:
+  friend class Server;
+  Server* server_;
+};
+
+} // namespace grpc
+
+#endif  // GRPCXX_ANONYMOUS_SERVICE_H
diff --git a/include/grpc++/anonymous_stub.h b/include/grpc++/anonymous_stub.h
new file mode 100644
index 0000000..ccb474e
--- /dev/null
+++ b/include/grpc++/anonymous_stub.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.
+ *
+ */
+
+#ifndef GRPCXX_ANONYMOUS_STUB_H
+#define GRPCXX_ANONYMOUS_STUB_H
+
+#include <grpc++/byte_buffer.h>
+#include <grpc++/stream.h>
+
+namespace grpc {
+
+typedef ClientAsyncReaderWriter<ByteBuffer, ByteBuffer> GenericClientReaderWriter;
+
+// Anonymous stubs provide a type-unsafe interface to call gRPC methods
+// by name.
+class AnonymousStub {
+ public:
+  explicit AnonymousStub(std::shared_ptr<ChannelInterface> channel) : channel_(channel) {}
+
+  // begin a call to a named method
+  std::unique_ptr<GenericClientReaderWriter> Call(ClientContext* context, const grpc::string& method);
+
+ private:
+  std::shared_ptr<ChannelInterface> channel_;
+};
+
+} // namespace grpc
+
+#endif  // GRPCXX_ANONYMOUS_STUB_H
diff --git a/include/grpc++/byte_buffer.h b/include/grpc++/byte_buffer.h
new file mode 100644
index 0000000..e864ca3
--- /dev/null
+++ b/include/grpc++/byte_buffer.h
@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPCXX_BYTE_BUFFER_H
+#define GRPCXX_BYTE_BUFFER_H
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpc++/config.h>
+#include <grpc++/slice.h>
+
+#include <vector>
+
+namespace grpc {
+
+class ByteBuffer GRPC_FINAL {
+ public:
+  ByteBuffer() : buffer_(nullptr) {}
+
+  ByteBuffer(Slice* slices, size_t nslices);
+
+  ~ByteBuffer() {
+    if (buffer_) {
+      grpc_byte_buffer_destroy(buffer_);
+    }
+  }
+
+  void Dump(std::vector<Slice>* slices);
+
+  void Clear();
+  size_t Length();
+
+ private:
+  friend class CallOpBuffer;
+
+  // takes ownership
+  void set_buffer(grpc_byte_buffer* buf) {
+    if (buffer_) {
+      gpr_log(GPR_ERROR, "Overriding existing buffer");
+      Clear();
+    }
+    buffer_ = buf;
+  }
+
+  grpc_byte_buffer* buffer() const {
+    return buffer_;
+  }
+
+  grpc_byte_buffer* buffer_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCXX_BYTE_BUFFER_H
diff --git a/include/grpc++/impl/call.h b/include/grpc++/impl/call.h
index 5de5662..a8551ad 100644
--- a/include/grpc++/impl/call.h
+++ b/include/grpc++/impl/call.h
@@ -35,9 +35,9 @@
 #define GRPCXX_IMPL_CALL_H
 
 #include <grpc/grpc.h>
+#include <grpc++/completion_queue.h>
 #include <grpc++/config.h>
 #include <grpc++/status.h>
-#include <grpc++/completion_queue.h>
 
 #include <memory>
 #include <map>
@@ -47,6 +47,7 @@
 
 namespace grpc {
 
+class ByteBuffer;
 class Call;
 
 class CallOpBuffer : public CompletionQueueTag {
@@ -62,7 +63,9 @@
   void AddSendInitialMetadata(ClientContext *ctx);
   void AddRecvInitialMetadata(ClientContext *ctx);
   void AddSendMessage(const grpc::protobuf::Message &message);
+  void AddSendMessage(const ByteBuffer& message);
   void AddRecvMessage(grpc::protobuf::Message *message);
+  void AddRecvMessage(ByteBuffer *message);
   void AddClientSendClose();
   void AddClientRecvStatus(ClientContext *ctx, Status *status);
   void AddServerSendStatus(std::multimap<grpc::string, grpc::string> *metadata,
@@ -90,10 +93,12 @@
   grpc_metadata_array recv_initial_metadata_arr_;
   // Send message
   const grpc::protobuf::Message *send_message_;
-  grpc_byte_buffer *send_message_buf_;
+  const ByteBuffer *send_message_buffer_;
+  grpc_byte_buffer *send_buf_;
   // Recv message
   grpc::protobuf::Message *recv_message_;
-  grpc_byte_buffer *recv_message_buf_;
+  ByteBuffer *recv_message_buffer_;
+  grpc_byte_buffer *recv_buf_;
   // Client send close
   bool client_send_close_;
   // Client recv status
diff --git a/include/grpc++/server.h b/include/grpc++/server.h
index 43c8432..a580a24 100644
--- a/include/grpc++/server.h
+++ b/include/grpc++/server.h
@@ -48,6 +48,8 @@
 struct grpc_server;
 
 namespace grpc {
+class AnonymousServerContext;
+class AnonymousService;
 class AsynchronousService;
 class RpcService;
 class RpcServiceMethod;
@@ -69,6 +71,7 @@
   void Wait();
 
  private:
+  friend class AnonymousService;
   friend class ServerBuilder;
 
   class SyncRequest;
@@ -81,6 +84,7 @@
   // The service must exist for the lifetime of the Server instance.
   bool RegisterService(RpcService* service);
   bool RegisterAsyncService(AsynchronousService* service);
+  void RegisterAnonymousService(AnonymousService* service);
   // Add a listening port. Can be called multiple times.
   int AddPort(const grpc::string& addr, ServerCredentials* creds);
   // Start the server.
@@ -98,6 +102,10 @@
                         ServerAsyncStreamingInterface* stream,
                         CompletionQueue* cq, void* tag) GRPC_OVERRIDE;
 
+  void RequestAsyncAnonymousCall(AnonymousServerContext* context,
+                        ServerAsyncStreamingInterface* stream,
+                        CompletionQueue* cq, void* tag);
+
   // Completion queue.
   CompletionQueue cq_;
 
diff --git a/include/grpc++/server_builder.h b/include/grpc++/server_builder.h
index a327077..cb961bf 100644
--- a/include/grpc++/server_builder.h
+++ b/include/grpc++/server_builder.h
@@ -41,6 +41,7 @@
 
 namespace grpc {
 
+class AnonymousService;
 class AsynchronousService;
 class CompletionQueue;
 class RpcService;
@@ -64,6 +65,9 @@
   // instance returned by BuildAndStart().
   void RegisterAsyncService(AsynchronousService* service);
 
+  // Register an anonymous service.
+  void RegisterAnonymousService(AnonymousService* service);
+
   // Add a listening port. Can be called multiple times.
   void AddPort(const grpc::string& addr,
                std::shared_ptr<ServerCredentials> creds,
@@ -87,6 +91,7 @@
   std::vector<AsynchronousService*> async_services_;
   std::vector<Port> ports_;
   std::shared_ptr<ServerCredentials> creds_;
+  AnonymousService* anonymous_service_;
   ThreadPoolInterface* thread_pool_;
 };
 
diff --git a/include/grpc++/server_context.h b/include/grpc++/server_context.h
index a986fff..9e3b80c 100644
--- a/include/grpc++/server_context.h
+++ b/include/grpc++/server_context.h
@@ -66,7 +66,7 @@
 class Server;
 
 // Interface of server side rpc context.
-class ServerContext GRPC_FINAL {
+class ServerContext {
  public:
   ServerContext();  // for async calls
   ~ServerContext();
diff --git a/include/grpc++/slice.h b/include/grpc++/slice.h
new file mode 100644
index 0000000..11b6a28
--- /dev/null
+++ b/include/grpc++/slice.h
@@ -0,0 +1,74 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPCXX_SLICE_H
+#define GRPCXX_SLICE_H
+
+#include <grpc/support/slice.h>
+#include <grpc++/config.h>
+
+namespace grpc {
+
+class Slice GRPC_FINAL {
+ public:
+  // construct empty slice
+  Slice();
+  // destructor - drops one ref
+  ~Slice();
+  // construct slice from grpc slice, adding a ref
+  enum AddRef { ADD_REF };
+  Slice(gpr_slice slice, AddRef);
+  // construct slice from grpc slice, stealing a ref
+  enum StealRef { STEAL_REF };
+  Slice(gpr_slice slice, StealRef);
+  // copy constructor - adds a ref
+  Slice(const Slice& other);
+  // assignment
+  Slice& operator=(Slice other) {
+    std::swap(slice_, other.slice_);
+    return *this;
+  }
+
+  size_t size() const { return GPR_SLICE_LENGTH(slice_); }
+  const gpr_uint8* begin() const { return GPR_SLICE_START_PTR(slice_); }
+  const gpr_uint8* end() const { return GPR_SLICE_END_PTR(slice_); }
+
+ private:
+  friend class ByteBuffer;
+
+  gpr_slice slice_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCXX_SLICE_H
diff --git a/src/cpp/common/call.cc b/src/cpp/common/call.cc
index 6ce1e8a..ebe7dee 100644
--- a/src/cpp/common/call.cc
+++ b/src/cpp/common/call.cc
@@ -31,8 +31,10 @@
  *
  */
 
-#include <grpc/support/alloc.h>
 #include <grpc++/impl/call.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc++/byte_buffer.h>
 #include <grpc++/client_context.h>
 #include <grpc++/channel_interface.h>
 
@@ -48,9 +50,11 @@
       recv_initial_metadata_(nullptr),
       recv_initial_metadata_arr_{0, 0, nullptr},
       send_message_(nullptr),
-      send_message_buf_(nullptr),
+      send_message_buffer_(nullptr),
+      send_buf_(nullptr),
       recv_message_(nullptr),
-      recv_message_buf_(nullptr),
+      recv_message_buffer_(nullptr),
+      recv_buf_(nullptr),
       client_send_close_(false),
       recv_trailing_metadata_(nullptr),
       recv_status_(nullptr),
@@ -74,18 +78,20 @@
   recv_initial_metadata_ = nullptr;
   recv_initial_metadata_arr_.count = 0;
 
+  if (send_buf_ && send_message_) {
+    grpc_byte_buffer_destroy(send_buf_);
+  }
   send_message_ = nullptr;
-  if (send_message_buf_) {
-    grpc_byte_buffer_destroy(send_message_buf_);
-    send_message_buf_ = nullptr;
-  }
+  send_message_buffer_ = nullptr;
+  send_buf_ = nullptr;
 
-  recv_message_ = nullptr;
   got_message = false;
-  if (recv_message_buf_) {
-    grpc_byte_buffer_destroy(recv_message_buf_);
-    recv_message_buf_ = nullptr;
+  if (recv_buf_ && recv_message_) {
+    grpc_byte_buffer_destroy(recv_buf_);
   }
+  recv_message_ = nullptr;
+  recv_message_buffer_ = nullptr;
+  recv_buf_ = nullptr;
 
   client_send_close_ = false;
 
@@ -106,11 +112,11 @@
   gpr_free(status_details_);
   gpr_free(recv_initial_metadata_arr_.metadata);
   gpr_free(recv_trailing_metadata_arr_.metadata);
-  if (recv_message_buf_) {
-    grpc_byte_buffer_destroy(recv_message_buf_);
+  if (recv_buf_ && recv_message_) {
+    grpc_byte_buffer_destroy(recv_buf_);
   }
-  if (send_message_buf_) {
-    grpc_byte_buffer_destroy(send_message_buf_);
+  if (send_buf_ && send_message_) {
+    grpc_byte_buffer_destroy(send_buf_);
   }
 }
 
@@ -166,11 +172,19 @@
   send_message_ = &message;
 }
 
+void CallOpBuffer::AddSendMessage(const ByteBuffer& message) {
+  send_message_buffer_ = &message;
+}
+
 void CallOpBuffer::AddRecvMessage(grpc::protobuf::Message* message) {
   recv_message_ = message;
   recv_message_->Clear();
 }
 
+void CallOpBuffer::AddRecvMessage(ByteBuffer* message) {
+  recv_message_buffer_ = message;
+}
+
 void CallOpBuffer::AddClientSendClose() { client_send_close_ = true; }
 
 void CallOpBuffer::AddServerRecvClose(bool* cancelled) {
@@ -206,19 +220,23 @@
     ops[*nops].data.recv_initial_metadata = &recv_initial_metadata_arr_;
     (*nops)++;
   }
-  if (send_message_) {
-    bool success = SerializeProto(*send_message_, &send_message_buf_);
-    if (!success) {
-      abort();
-      // TODO handle parse failure
+  if (send_message_ || send_message_buffer_) {
+    if (send_message_) {
+      bool success = SerializeProto(*send_message_, &send_buf_);
+      if (!success) {
+        abort();
+        // TODO handle parse failure
+      }
+    } else {
+      send_buf_ = send_message_buffer_->buffer();
     }
     ops[*nops].op = GRPC_OP_SEND_MESSAGE;
-    ops[*nops].data.send_message = send_message_buf_;
+    ops[*nops].data.send_message = send_buf_;
     (*nops)++;
   }
-  if (recv_message_) {
+  if (recv_message_ || recv_message_buffer_) {
     ops[*nops].op = GRPC_OP_RECV_MESSAGE;
-    ops[*nops].data.recv_message = &recv_message_buf_;
+    ops[*nops].data.recv_message = &recv_buf_;
     (*nops)++;
   }
   if (client_send_close_) {
@@ -256,9 +274,11 @@
 
 bool CallOpBuffer::FinalizeResult(void** tag, bool* status) {
   // Release send buffers.
-  if (send_message_buf_) {
-    grpc_byte_buffer_destroy(send_message_buf_);
-    send_message_buf_ = nullptr;
+  if (send_buf_ && send_message_) {
+    if (send_message_) {
+      grpc_byte_buffer_destroy(send_buf_);
+    }
+    send_buf_ = nullptr;
   }
   if (initial_metadata_) {
     gpr_free(initial_metadata_);
@@ -275,12 +295,16 @@
     FillMetadataMap(&recv_initial_metadata_arr_, recv_initial_metadata_);
   }
   // Parse received message if any.
-  if (recv_message_) {
-    if (recv_message_buf_) {
+  if (recv_message_ || recv_message_buffer_) {
+    if (recv_buf_) {
       got_message = *status;
-      *status = *status && DeserializeProto(recv_message_buf_, recv_message_);
-      grpc_byte_buffer_destroy(recv_message_buf_);
-      recv_message_buf_ = nullptr;
+      if (recv_message_) {
+        *status = *status && DeserializeProto(recv_buf_, recv_message_);
+        grpc_byte_buffer_destroy(recv_buf_);
+      } else {
+        recv_message_buffer_->set_buffer(recv_buf_);
+      }
+      recv_buf_ = nullptr;
     } else {
       // Read failed
       got_message = false;
diff --git a/src/cpp/server/anonymous_service.cc b/src/cpp/server/anonymous_service.cc
new file mode 100644
index 0000000..ef20cad
--- /dev/null
+++ b/src/cpp/server/anonymous_service.cc
@@ -0,0 +1,47 @@
+/*
+ *
+ * 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++/anonymous_service.h>
+
+#include <grpc++/server.h>
+
+namespace grpc {
+
+void AnonymousService::RequestCall(AnonymousServerContext* ctx,
+                   GenericServerReaderWriter* reader_writer,
+                   CompletionQueue* cq, void* tag) {
+  server_->RequestAsyncAnonymousCall(ctx, reader_writer, cq, tag);
+}
+
+} // namespace grpc
+
diff --git a/src/cpp/server/server.cc b/src/cpp/server/server.cc
index e69032a..d8425f1 100644
--- a/src/cpp/server/server.cc
+++ b/src/cpp/server/server.cc
@@ -37,6 +37,7 @@
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>
 #include <grpc/support/log.h>
+#include <grpc++/anonymous_service.h>
 #include <grpc++/completion_queue.h>
 #include <grpc++/impl/rpc_service_method.h>
 #include <grpc++/impl/service_type.h>
@@ -226,6 +227,12 @@
   return true;
 }
 
+void Server::RegisterAnonymousService(AnonymousService* service) {
+  GPR_ASSERT(service->server_ == nullptr &&
+             "Can only register an anonymous service against one server.");
+  service->server_ = this;
+}
+
 int Server::AddPort(const grpc::string& addr, ServerCredentials* creds) {
   GPR_ASSERT(!started_);
   return creds->AddPortToServer(addr, server_);
@@ -289,15 +296,36 @@
         stream_(stream),
         cq_(cq),
         ctx_(ctx),
+        anonymous_ctx_(nullptr),
         server_(server),
         call_(nullptr),
         payload_(nullptr) {
     memset(&array_, 0, sizeof(array_));
+    grpc_call_details_init(&call_details_);
     grpc_server_request_registered_call(
-        server->server_, registered_method, &call_, &deadline_, &array_,
-        request ? &payload_ : nullptr, cq->cq(), this);
+        server->server_, registered_method, &call_, &call_details_.deadline,
+        &array_, request ? &payload_ : nullptr, cq->cq(), this);
   }
 
+  AsyncRequest(Server* server, AnonymousServerContext* ctx,
+               ServerAsyncStreamingInterface* stream, CompletionQueue* cq,
+               void* tag)
+      : tag_(tag),
+        request_(nullptr),
+        stream_(stream),
+        cq_(cq),
+        ctx_(nullptr),
+        anonymous_ctx_(ctx),
+        server_(server),
+        call_(nullptr),
+        payload_(nullptr) {
+    memset(&array_, 0, sizeof(array_));
+    grpc_call_details_init(&call_details_);
+    grpc_server_request_call(
+        server->server_, &call_, &call_details_, &array_, cq->cq(), this);
+  }
+
+
   ~AsyncRequest() {
     if (payload_) {
       grpc_byte_buffer_destroy(payload_);
@@ -315,20 +343,28 @@
         *status = false;
       }
     }
+    ServerContext* ctx = ctx_ ? ctx_ : anonymous_ctx_;
+    GPR_ASSERT(ctx);
     if (*status) {
-      ctx_->deadline_ = Timespec2Timepoint(deadline_);
+      ctx->deadline_ = Timespec2Timepoint(call_details_.deadline);
       for (size_t i = 0; i < array_.count; i++) {
-        ctx_->client_metadata_.insert(std::make_pair(
+        ctx->client_metadata_.insert(std::make_pair(
             grpc::string(array_.metadata[i].key),
             grpc::string(
                 array_.metadata[i].value,
                 array_.metadata[i].value + array_.metadata[i].value_length)));
       }
+      if (anonymous_ctx_) {
+        anonymous_ctx_->method_.assign(call_details_.method,
+                                       call_details_.method_capacity);
+        anonymous_ctx_->host_.assign(call_details_.host,
+                                     call_details_.host_capacity);
+      }
     }
-    ctx_->call_ = call_;
+    ctx->call_ = call_;
     Call call(call_, server_, cq_);
     if (orig_status && call_) {
-      ctx_->BeginCompletionOp(&call);
+      ctx->BeginCompletionOp(&call);
     }
     // just the pointers inside call are copied here
     stream_->BindCall(&call);
@@ -342,9 +378,10 @@
   ServerAsyncStreamingInterface* const stream_;
   CompletionQueue* const cq_;
   ServerContext* const ctx_;
+  AnonymousServerContext* const anonymous_ctx_;
   Server* const server_;
   grpc_call* call_;
-  gpr_timespec deadline_;
+  grpc_call_details call_details_;
   grpc_metadata_array array_;
   grpc_byte_buffer* payload_;
 };
@@ -356,6 +393,12 @@
   new AsyncRequest(this, registered_method, context, request, stream, cq, tag);
 }
 
+void Server::RequestAsyncAnonymousCall(AnonymousServerContext* context,
+                                       ServerAsyncStreamingInterface* stream,
+                                       CompletionQueue* cq, void* tag) {
+  new AsyncRequest(this, context, stream, cq, tag);
+}
+
 void Server::ScheduleCallback() {
   {
     std::unique_lock<std::mutex> lock(mu_);
diff --git a/src/cpp/server/server_builder.cc b/src/cpp/server/server_builder.cc
index 5de5923..e3b9cdf 100644
--- a/src/cpp/server/server_builder.cc
+++ b/src/cpp/server/server_builder.cc
@@ -41,7 +41,8 @@
 
 namespace grpc {
 
-ServerBuilder::ServerBuilder() : thread_pool_(nullptr) {}
+ServerBuilder::ServerBuilder()
+    : anonymous_service_(nullptr), thread_pool_(nullptr) {}
 
 void ServerBuilder::RegisterService(SynchronousService* service) {
   services_.push_back(service->service());
@@ -51,6 +52,16 @@
   async_services_.push_back(service);
 }
 
+void ServerBuilder::RegisterAnonymousService(AnonymousService* service) {
+  if (anonymous_service_) {
+    gpr_log(GPR_ERROR,
+            "Adding multiple AnonymousService is unsupported for now. "
+            "Dropping the service %p", service);
+    return;
+  }
+  anonymous_service_ = service;
+}
+
 void ServerBuilder::AddPort(const grpc::string& addr,
                             std::shared_ptr<ServerCredentials> creds,
                             int* selected_port) {
@@ -84,6 +95,9 @@
       return nullptr;
     }
   }
+  if (anonymous_service_) {
+    server->RegisterAnonymousService(anonymous_service_);
+  }
   for (auto& port : ports_) {
     int r = server->AddPort(port.addr, port.creds.get());
     if (!r) return nullptr;
diff --git a/src/cpp/util/byte_buffer.cc b/src/cpp/util/byte_buffer.cc
new file mode 100644
index 0000000..f8d8eec
--- /dev/null
+++ b/src/cpp/util/byte_buffer.cc
@@ -0,0 +1,76 @@
+/*
+ *
+ * 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++/byte_buffer.h>
+
+namespace grpc {
+
+ByteBuffer::ByteBuffer(Slice* slices, size_t nslices) {
+  // TODO(yangg) maybe expose some core API to simplify this
+  std::vector<gpr_slice> c_slices(nslices);
+  for (size_t i = 0; i < nslices; i++) {
+    c_slices[i] = slices[i].slice_;
+  }
+  buffer_ = grpc_byte_buffer_create(c_slices.data(), nslices);
+}
+
+void ByteBuffer::Clear() {
+  if (buffer_) {
+    grpc_byte_buffer_destroy(buffer_);
+    buffer_ = nullptr;
+  }
+}
+
+void ByteBuffer::Dump(std::vector<Slice>* slices) {
+  slices->clear();
+  if (!buffer_) {
+    return;
+  }
+  grpc_byte_buffer_reader* reader = grpc_byte_buffer_reader_create(buffer_);
+  gpr_slice s;
+  while (grpc_byte_buffer_reader_next(reader, &s)) {
+    slices->push_back(Slice(s, Slice::STEAL_REF));
+    gpr_slice_unref(s);
+  }
+  grpc_byte_buffer_reader_destroy(reader);
+}
+
+size_t ByteBuffer::Length() {
+  if (buffer_) {
+    return grpc_byte_buffer_length(buffer_);
+  } else {
+    return 0;
+  }
+}
+
+}  // namespace grpc
diff --git a/src/cpp/util/slice.cc b/src/cpp/util/slice.cc
new file mode 100644
index 0000000..a549c50
--- /dev/null
+++ b/src/cpp/util/slice.cc
@@ -0,0 +1,50 @@
+/*
+ *
+ * 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++/slice.h>
+
+namespace grpc {
+
+Slice::Slice() : slice_(gpr_empty_slice()) {}
+
+Slice::~Slice() {
+  gpr_slice_unref(slice_);
+}
+
+Slice::Slice(gpr_slice slice, AddRef) : slice_(gpr_slice_ref(slice)) {}
+
+Slice::Slice(gpr_slice slice, StealRef) : slice_(slice) {}
+
+Slice::Slice(const Slice& other) : slice_(gpr_slice_ref(other.slice_)) {}
+
+}  // namespace grpc