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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "remoting/protocol/util.h"
      6 
      7 #include "base/basictypes.h"
      8 #include "base/containers/hash_tables.h"
      9 #include "base/logging.h"
     10 #include "net/base/io_buffer.h"
     11 #include "third_party/libjingle/source/talk/base/byteorder.h"
     12 
     13 namespace remoting {
     14 namespace protocol {
     15 
     16 scoped_refptr<net::IOBufferWithSize> SerializeAndFrameMessage(
     17     const google::protobuf::MessageLite& msg) {
     18   // Create a buffer with 4 extra bytes. This is used as prefix to write an
     19   // int32 of the serialized message size for framing.
     20   const int kExtraBytes = sizeof(int32);
     21   int size = msg.ByteSize() + kExtraBytes;
     22   scoped_refptr<net::IOBufferWithSize> buffer(new net::IOBufferWithSize(size));
     23   talk_base::SetBE32(buffer->data(), msg.GetCachedSize());
     24   msg.SerializeWithCachedSizesToArray(
     25       reinterpret_cast<uint8*>(buffer->data()) + kExtraBytes);
     26   return buffer;
     27 }
     28 
     29 }  // namespace protocol
     30 }  // namespace remoting
     31