tcp-l4-protocol.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2007 Georgia Tech Research Corporation
 *
 * 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: Raj Bhattacharjea <raj.b@gatech.edu>
 */

#ifndef TCP_L4_PROTOCOL_H
#define TCP_L4_PROTOCOL_H

#include <stdint.h>

#include "ns3/ipv4-address.h"
#include "ns3/ipv6-address.h"
#include "ns3/sequence-number.h"
#include "ip-l4-protocol.h"


namespace ns3 {

class Node;
class Socket;
class TcpHeader;
class Ipv4EndPointDemux;
class Ipv6EndPointDemux;
class Ipv4Interface;
class TcpSocketBase;
class Ipv4EndPoint;
class Ipv6EndPoint;
class NetDevice;


class TcpL4Protocol : public IpL4Protocol {
public:
  static TypeId GetTypeId (void);
  static const uint8_t PROT_NUMBER; 

  TcpL4Protocol ();
  virtual ~TcpL4Protocol ();

  void SetNode (Ptr<Node> node);

  // NOTE: API from here should not be removed, only added. Be backward-compatible!

  Ptr<Socket> CreateSocket (void);

  Ptr<Socket> CreateSocket (TypeId congestionTypeId, TypeId recoveryTypeId);

  Ptr<Socket> CreateSocket (TypeId congestionTypeId);

  Ipv4EndPoint *Allocate (void);
  Ipv4EndPoint *Allocate (Ipv4Address address);
  Ipv4EndPoint *Allocate (Ptr<NetDevice> boundNetDevice, uint16_t port);
  Ipv4EndPoint *Allocate (Ptr<NetDevice> boundNetDevice, Ipv4Address address, uint16_t port);
  Ipv4EndPoint *Allocate (Ptr<NetDevice> boundNetDevice,
                          Ipv4Address localAddress, uint16_t localPort,
                          Ipv4Address peerAddress, uint16_t peerPort);
  Ipv6EndPoint *Allocate6 (void);
  Ipv6EndPoint *Allocate6 (Ipv6Address address);
  Ipv6EndPoint *Allocate6 (Ptr<NetDevice> boundNetDevice, uint16_t port);
  Ipv6EndPoint *Allocate6 (Ptr<NetDevice> boundNetDevice, Ipv6Address address, uint16_t port);
  Ipv6EndPoint *Allocate6 (Ptr<NetDevice> boundNetDevice,
                           Ipv6Address localAddress, uint16_t localPort,
                           Ipv6Address peerAddress, uint16_t peerPort);

  void SendPacket (Ptr<Packet> pkt, const TcpHeader &outgoing,
                   const Address &saddr, const Address &daddr,
                   Ptr<NetDevice> oif = 0) const;

  void AddSocket (Ptr<TcpSocketBase> socket);

  bool RemoveSocket (Ptr<TcpSocketBase> socket);

  void DeAllocate (Ipv4EndPoint *endPoint);
  void DeAllocate (Ipv6EndPoint *endPoint);

  // From IpL4Protocol
  virtual enum IpL4Protocol::RxStatus Receive (Ptr<Packet> p,
                                               Ipv4Header const &incomingIpHeader,
                                               Ptr<Ipv4Interface> incomingInterface);
  virtual enum IpL4Protocol::RxStatus Receive (Ptr<Packet> p,
                                               Ipv6Header const &incomingIpHeader,
                                               Ptr<Ipv6Interface> incomingInterface);

  virtual void ReceiveIcmp (Ipv4Address icmpSource, uint8_t icmpTtl,
                            uint8_t icmpType, uint8_t icmpCode, uint32_t icmpInfo,
                            Ipv4Address payloadSource,Ipv4Address payloadDestination,
                            const uint8_t payload[8]);
  virtual void ReceiveIcmp (Ipv6Address icmpSource, uint8_t icmpTtl,
                            uint8_t icmpType, uint8_t icmpCode, uint32_t icmpInfo,
                            Ipv6Address payloadSource,Ipv6Address payloadDestination,
                            const uint8_t payload[8]);

  virtual void SetDownTarget (IpL4Protocol::DownTargetCallback cb);
  virtual void SetDownTarget6 (IpL4Protocol::DownTargetCallback6 cb);
  virtual int GetProtocolNumber (void) const;
  virtual IpL4Protocol::DownTargetCallback GetDownTarget (void) const;
  virtual IpL4Protocol::DownTargetCallback6 GetDownTarget6 (void) const;

protected:
  virtual void DoDispose (void);

  virtual void NotifyNewAggregate ();

  enum IpL4Protocol::RxStatus
  PacketReceived (Ptr<Packet> packet, TcpHeader &incomingTcpHeader,
                  const Address &source, const Address &destination);

  void NoEndPointsFound (const TcpHeader &incomingHeader, const Address &incomingSAddr,
                         const Address &incomingDAddr);

private:
  Ptr<Node> m_node;                
  Ipv4EndPointDemux *m_endPoints;  
  Ipv6EndPointDemux *m_endPoints6; 
  TypeId m_rttTypeId;              
  TypeId m_congestionTypeId;       
  TypeId m_recoveryTypeId;         
  std::vector<Ptr<TcpSocketBase> > m_sockets;      
  IpL4Protocol::DownTargetCallback m_downTarget;   
  IpL4Protocol::DownTargetCallback6 m_downTarget6; 

  TcpL4Protocol (const TcpL4Protocol &);
  TcpL4Protocol &operator = (const TcpL4Protocol &);

  void SendPacketV4 (Ptr<Packet> pkt, const TcpHeader &outgoing,
                     const Ipv4Address &saddr, const Ipv4Address &daddr,
                     Ptr<NetDevice> oif = 0) const;

  void SendPacketV6 (Ptr<Packet> pkt, const TcpHeader &outgoing,
                     const Ipv6Address &saddr, const Ipv6Address &daddr,
                     Ptr<NetDevice> oif = 0) const;
};

} // namespace ns3

#endif /* TCP_L4_PROTOCOL_H */