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

/*

 * Copyright (c) 2011 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)

 *

 * 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: Jaume Nin <jnin@cttc.cat>

 *         Nicola Baldo <nbaldo@cttc.cat>

 */

#ifndef EPC_ENB_APPLICATION_H

#define EPC_ENB_APPLICATION_H

#include <map>

namespace ns3 {

/**

 * \ingroup lte

 *

 */

{

public:

  static TypeId GetTypeId (void);

  /** 

   * 

   * \param s1uSocket the socket to be used to send/receive packets

   * to/from the S1-U interface connected with the SGW 

   * \param sgwAddress the IPv4 address at which this eNB will be able to reach its SGW

   * 

   */

  /**

   * 

   */

  virtual ~EpcEnbApplication (void);

  /** 

   * Method to be assigned to the recv callback of the LTE socket. It is called when the eNB receives a data packet from the radio interface that is to be forwarded to the SGW.

   * 

   * \param socket pointer to the LTE socket

   */

  void RecvFromLteSocket (Ptr<Socket> socket);

  /** 

   * Method to be assigned to the recv callback of the S1-U socket. It is called when the eNB receives a data packet from the SGW that is to be forwarded to the UE.

   * 

   * \param socket pointer to the S1-U socket

   */

  void RecvFromS1uSocket (Ptr<Socket> socket);

  /** 

   * Send a packet to the UE via the LTE radio interface of the eNB

   * 

   * \param packet t

   * \param rbid the Radio Bearer IDentifier

   */

  /** 

   * Send a packet to the SGW via the S1-U interface

   * 

   * \param packet packet to be sent

   * \param teid the Tunnel Enpoint IDentifier

   */

  void SendToS1uSocket (Ptr<Packet> packet, uint32_t teid);

private:

  /**

   * raw packet socket to send and receive the packets to and from the LTE radio interface

   */

  Ptr<Socket> m_lteSocket;

  /**

   * UDP socket to send and receive GTP-U the packets to and from the S1-U interface

   */

  /**

   */

  Ipv4Address m_sgwAddress;

};

} //namespace ns3

#endif /* EPC_ENB_APPLICATION_H */