Add P2PDatagramSocket and P2PStreamSocket interfaces.

remoting/protocol/message_reader.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_PROTOCOL_MESSAGE_READER_H_
 #define REMOTING_PROTOCOL_MESSAGE_READER_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "remoting/base/compound_buffer.h"
 #include "remoting/protocol/message_decoder.h"
 
 namespace net {
 class IOBuffer;
-class Socket;
 }  // namespace net
 
 namespace remoting {
 namespace protocol {
 
+class P2PStreamSocket;
+
 // MessageReader reads data from the socket asynchronously and calls
 // callback for each message it receives. It stops calling the
 // callback as soon as the socket is closed, so the socket should
 // always be closed before the callback handler is destroyed.
 //
 // In order to throttle the stream, MessageReader doesn't try to read
 // new data from the socket until all previously received messages are
 // processed by the receiver (|done_task| is called for each message).
 // It is still possible that the MessageReceivedCallback is called
 // twice (so that there is more than one outstanding message),
 // e.g. when we the sender sends multiple messages in one TCP packet.
 class MessageReader : public base::NonThreadSafe {
  public:
   typedef base::Callback<void(scoped_ptr<CompoundBuffer>, const base::Closure&)>
       MessageReceivedCallback;
   typedef base::Callback<void(int)> ReadFailedCallback;
 
   MessageReader();
   virtual ~MessageReader();
 
   // Sets the callback to be called for each incoming message.
   void SetMessageReceivedCallback(const MessageReceivedCallback& callback);
 
   // Starts reading from |socket|.
-  void StartReading(net::Socket* socket,
+  void StartReading(P2PStreamSocket* socket,
                     const ReadFailedCallback& read_failed_callback);
 
  private:
   void DoRead();
   void OnRead(int result);
   void HandleReadResult(int result, bool* read_succeeded);
   void OnDataReceived(net::IOBuffer* data, int data_size);
   void RunCallback(scoped_ptr<CompoundBuffer> message);
   void OnMessageDone();
 
   ReadFailedCallback read_failed_callback_;
 
-  net::Socket* socket_;
+  P2PStreamSocket* socket_;
 
   // Set to true, when we have a socket read pending, and expecting
   // OnRead() to be called when new data is received.
   bool read_pending_;
 
   // Number of messages that we received, but haven't finished
   // processing yet, i.e. |done_task| hasn't been called for these
   // messages.
   int pending_messages_;
 
   bool closed_;
   scoped_refptr<net::IOBuffer> read_buffer_;
 
   MessageDecoder message_decoder_;
 
   // Callback is called when a message is received.
   MessageReceivedCallback message_received_callback_;
 
   base::WeakPtrFactory<MessageReader> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageReader);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_MESSAGE_READER_H_