/*
 * libjingle
 * Copyright 2004--2005, 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 _SOCKETMONITOR_H_
#define _SOCKETMONITOR_H_

#include "talk/base/thread.h"
#include "talk/base/sigslot.h"
#include "talk/base/criticalsection.h"
#include "talk/p2p/base/session.h"
#include "talk/p2p/base/p2ptransportchannel.h"
#include "talk/p2p/base/port.h"
#include <vector>

namespace cricket {

struct ConnectionInfo {
  bool best_connection;
  bool writable;
  bool readable;
  bool timeout;
  bool new_connection;
  size_t rtt;
  size_t sent_total_bytes;
  size_t sent_bytes_second;
  size_t recv_total_bytes;
  size_t recv_bytes_second;
  Candidate local_candidate;
  Candidate remote_candidate;
  double est_quality;
  void *key;
};

class SocketMonitor : public talk_base::MessageHandler, 
    public sigslot::has_slots<> {
public:
  SocketMonitor(Session* session, TransportChannel* channel,
                talk_base::Thread *monitor_thread);
  ~SocketMonitor();

  void Start(int cms);
  void Stop();

  talk_base::Thread *monitor_thread() { return monitoring_thread_; }

  sigslot::signal2<SocketMonitor *,
                   const std::vector<ConnectionInfo> &> SignalUpdate;

protected:
  void OnMessage(talk_base::Message *message);
  void OnConnectionMonitor(P2PTransportChannel* channel);
  void PollSocket(bool poll);
  P2PTransportChannel* GetP2PChannel();

  std::vector<ConnectionInfo> connection_infos_;
  Session* session_;
  TransportChannel* channel_;
  talk_base::Thread* channel_thread_;
  talk_base::Thread* monitoring_thread_;
  talk_base::CriticalSection crit_;
  uint32 rate_;
  bool monitoring_;
};

}

#endif // _SOCKETMONITOR_H_
