base/socketstream.h

/*
 * libjingle
 * Copyright 2005--2010, Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. 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.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 TALK_BASE_SOCKETSTREAM_H_
#define TALK_BASE_SOCKETSTREAM_H_

#include "talk/base/asyncsocket.h"
#include "talk/base/common.h"
#include "talk/base/stream.h"

namespace talk_base {

///////////////////////////////////////////////////////////////////////////////

class SocketStream : public StreamInterface, public sigslot::has_slots<> {
 public:
  explicit SocketStream(AsyncSocket* socket);
  virtual ~SocketStream();

  void Attach(AsyncSocket* socket);
  AsyncSocket* Detach();

  AsyncSocket* GetSocket() { return socket_; }

  virtual StreamState GetState() const;

  virtual StreamResult Read(void* buffer, size_t buffer_len,
                            size_t* read, int* error);

  virtual StreamResult Write(const void* data, size_t data_len,
                             size_t* written, int* error);

  virtual void Close();

 private:
  void OnConnectEvent(AsyncSocket* socket);
  void OnReadEvent(AsyncSocket* socket);
  void OnWriteEvent(AsyncSocket* socket);
  void OnCloseEvent(AsyncSocket* socket, int err);

  AsyncSocket* socket_;

  DISALLOW_EVIL_CONSTRUCTORS(SocketStream);
};

///////////////////////////////////////////////////////////////////////////////

}  // namespace talk_base

#endif  // TALK_BASE_SOCKETSTREAM_H_