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

/*

 * 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 NSC_TCP_L4_PROTOCOL_H

#define NSC_TCP_L4_PROTOCOL_H

#include <stdint.h>

#include "ns3/packet.h"

#include "ns3/ipv4-address.h"

#include "ns3/ptr.h"

#include "ns3/object-factory.h"

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

#include "ipv4-l4-protocol.h"

#include "ipv4-interface.h"

#include "tcp-header.h"

#include "nsc-tcp-socket-impl.h"

#include "sim_interface.h"

namespace ns3 {

class Node;

class Socket;

class TcpHeader;

/**

 * \ingroup nsctcp

 *

 * \brief Nsc wrapper glue, to interface with the Ipv4 protocol underneath.

 */

class NscTcpL4Protocol : public Ipv4L4Protocol {

public:

  static const uint8_t PROT_NUMBER;

  static TypeId GetTypeId (void);

  /**

   * \brief Constructor

   */

  NscTcpL4Protocol ();

  void SetNode (Ptr<Node> node);

  // legacy, moved to node/node.cc

  void SetNscLibrary (const std::string &lib);

  std::string GetNscLibrary (void) const;

  virtual int GetProtocolNumber (void) const;

  virtual int GetVersion (void) const;

  /**

   * \return A smart Socket pointer to a NscTcpSocketImpl, allocated by this instance

   * of the TCP protocol

   */

  Ptr<Socket> CreateSocket (void);

  Ipv4EndPoint *Allocate (void);

  Ipv4EndPoint *Allocate (Ipv4Address address);

  Ipv4EndPoint *Allocate (uint16_t port);

  Ipv4EndPoint *Allocate (Ipv4Address address, uint16_t port);

  Ipv4EndPoint *Allocate (Ipv4Address localAddress, uint16_t localPort,

                          Ipv4Address peerAddress, uint16_t peerPort);

  void DeAllocate (Ipv4EndPoint *endPoint);

  /**

   * \brief Recieve a packet up the protocol stack

   * \param p The Packet to dump the contents into

   * \param source The source's Ipv4Address

   * \param destination The destinations Ipv4Address

   * \param incomingInterface The Ipv4Interface it was received on

   */

  // Stub function, not used in nsc

  virtual Ipv4L4Protocol::RxStatus Receive (Ptr<Packet> p,

                       Ipv4Address const &source,

                       Ipv4Address const &destination,

                       Ptr<Ipv4Interface> incomingInterface);

protected:

  virtual void DoDispose (void);

  virtual void NotifyNewAggregate ();

private:

  Ptr<Node> m_node;

  Ipv4EndPointDemux *m_endPoints;

  ObjectFactory m_rttFactory;

private:

  static ObjectFactory GetDefaultRttEstimatorFactory (void);

  friend class NscTcpSocketImpl;

  INetStack* m_nscStack;

  void Wakeup (void);

  std::string m_nscLibrary;

  std::vector<Ptr<NscTcpSocketImpl> > m_sockets;

};

}; // namespace ns3

#endif /* NSC_TCP_L4_PROTOCOL_H */