File: message_serialization.cc

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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "remoting/protocol/message_serialization.h"

#include <stdint.h>

#include "base/compiler_specific.h"
#include "net/base/io_buffer.h"
#include "third_party/webrtc/rtc_base/byte_order.h"

namespace remoting::protocol {

scoped_refptr<net::IOBufferWithSize> SerializeAndFrameMessage(
    const google::protobuf::MessageLite& msg) {
  // Create a buffer with 4 extra bytes. This is used as prefix to write an
  // int32_t of the serialized message size for framing.
  const int kExtraBytes = sizeof(int32_t);
  size_t size = msg.ByteSizeLong() + kExtraBytes;
  scoped_refptr<net::IOBufferWithSize> buffer =
      base::MakeRefCounted<net::IOBufferWithSize>(size);
  webrtc::SetBE32(buffer->data(), msg.GetCachedSize());
  msg.SerializeWithCachedSizesToArray(
      UNSAFE_TODO(buffer->bytes() + kExtraBytes));
  return buffer;
}

}  // namespace remoting::protocol