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

/*

 * Copyright (c) 2005 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_HEADER_H

#define UDP_HEADER_H

#include <stdint.h>

#include "ns3/header.h"

#include "ipv4-address.h"

namespace ns3 {

class UdpHeader : public Header {

public:

  UdpHeader ();

  virtual ~UdpHeader ();

  static void EnableChecksums (void);

  void SetDestination (uint16_t port);

  void SetSource (uint16_t port);

  uint16_t GetSource (void) const;

  uint16_t GetDestination (void) const;

  void SetPayloadSize (uint16_t size);

  void InitializeChecksum (Ipv4Address source, 

                           Ipv4Address destination,

                           uint8_t protocol);

private:

  virtual void PrintTo (std::ostream &os) const;

  virtual uint32_t GetSerializedSize (void) const;

  virtual void SerializeTo (Buffer::Iterator start) const;

  virtual void DeserializeFrom (Buffer::Iterator start);

  uint16_t m_sourcePort;

  uint16_t m_destinationPort;

  uint16_t m_payloadSize;

  uint16_t m_initialChecksum;

  static bool m_calcChecksum;

};

}; // namespace ns3

#endif /* UDP_HEADER */