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

/*

 * Copyright (c) 2005 INRIA

 *

 * 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 ARP_HEADER_H

#define ARP_HEADER_H

#include "ns3/header.h"

#include "ns3/address.h"

#include "ns3/ipv4-address.h"

#include <string>

namespace ns3 {

/**

 * \brief The packet header for an ARP packet

 */

class ArpHeader : public Header 

{

public:

  void SetRequest (Address sourceHardwareAddress,

                   Ipv4Address sourceProtocolAddress,

                   Address destinationHardwareAddress,

                   Ipv4Address destinationProtocolAddress);

  void SetReply (Address sourceHardwareAddress,

                 Ipv4Address sourceProtocolAddress,

                 Address destinationHardwareAddress,

                 Ipv4Address destinationProtocolAddress);

  bool IsRequest (void) const;

  bool IsReply (void) const;

  Address GetSourceHardwareAddress (void);

  Address GetDestinationHardwareAddress (void);

  Ipv4Address GetSourceIpv4Address (void);

  Ipv4Address GetDestinationIpv4Address (void);

  static TypeId GetTypeId (void);

  virtual TypeId GetInstanceTypeId (void) const;

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

  virtual uint32_t GetSerializedSize (void) const;

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

  virtual uint32_t Deserialize (Buffer::Iterator start);

  enum ArpType_e {

    ARP_TYPE_REQUEST = 1,

    ARP_TYPE_REPLY   = 2

  };

  uint16_t m_type;

  Address m_macSource;

  Address m_macDest;

  Ipv4Address m_ipv4Source;

  Ipv4Address m_ipv4Dest;

};

}; // namespace ns3

#endif /* ARP_HEADER_H */