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

/*

 * Copyright (c) 2005,2006,2007 INRIA

 * All rights reserved.

 *

 * 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

 *

 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 */

#ifndef UDP_H

#define UDP_H

#include <stdint.h>

#include "ns3/packet.h"

#include "ipv4-address.h"

#include "ipv4-end-point-demux.h"

#include "udp-end-point.h"

#include "ipv4-l4-protocol.h"

namespace ns3 {

class Node;

class TraceResolver;

class TraceContext;

class Udp : public Ipv4L4Protocol {

public:

  static const uint8_t PROT_NUMBER;

  Udp (Node *node);

  virtual ~Udp ();

  virtual TraceResolver *CreateTraceResolver (TraceContext const &context);

  UdpEndPoint *Allocate (void);

  UdpEndPoint *Allocate (Ipv4Address address);

  UdpEndPoint *Allocate (uint16_t port);

  UdpEndPoint *Allocate (Ipv4Address address, uint16_t port);

  UdpEndPoint *Allocate (Ipv4Address localAddress, uint16_t localPort,

                         Ipv4Address peerAddress, uint16_t peerPort);

  // called by UdpSocket.

  void Send (Packet packet,

             Ipv4Address saddr, Ipv4Address daddr, 

             uint16_t sport, uint16_t dport);

  // inherited from Ipv4L4Protocol

  virtual Udp* Copy(Node *node) const;

  virtual void Receive(Packet& p, 

                       Ipv4Address const &source,

                       Ipv4Address const &destination);

 private:

  Node *m_node;

  Ipv4EndPointDemux<UdpEndPoint> *m_endPoints;

};

}; // namespace ns3

#endif /* UDP_H */