/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright 2007 University of Washington

 * 

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#ifndef __UDP_ECHO_SERVER_H__

#define __UDP_ECHO_SERVER_H__

#include "ns3/application.h"

#include "ns3/event-id.h"

#include "ns3/ptr.h"

#include "ns3/address.h"

namespace ns3 {

class Socket;

class Packet;

/**

 * \ingroup applications 

 * \defgroup udpecho UdpEcho

 */

/**

 * \ingroup udpecho

 * \brief A Udp Echo server

 *

 * Every packet received is sent back.

 */

class UdpEchoServer : public Application 

{

public:

  static TypeId GetTypeId (void);

  UdpEchoServer ();

  virtual ~UdpEchoServer ();

protected:

  virtual void DoDispose (void);

private:

  virtual void StartApplication (void);

  virtual void StopApplication (void);

  void HandleRead (Ptr<Socket> socket);

  uint16_t m_port;

  Ptr<Socket> m_socket;

  Address m_local;

};

} // namespace ns3

#endif // __UDP_ECHO_SERVER_H__