135 lines
4.4 KiB
C++
135 lines
4.4 KiB
C++
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2007 Georgia Tech Research Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Raj Bhattacharjea <raj.b@gatech.edu>
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*/
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#ifndef TCP_L4_PROTOCOL_H
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#define TCP_L4_PROTOCOL_H
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#include <stdint.h>
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#include "ns3/packet.h"
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#include "ns3/ipv4-address.h"
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#include "ns3/ptr.h"
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#include "ns3/object-factory.h"
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#include "ipv4-l4-protocol.h"
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#include "ns3/net-device.h"
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namespace ns3 {
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class Node;
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class Socket;
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class TcpHeader;
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class Ipv4EndPointDemux;
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class Ipv4Interface;
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class TcpSocketImpl;
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class Ipv4EndPoint;
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/**
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* \ingroup tcp
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* \brief A layer between the sockets interface and IP
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*
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* This class allocates "endpoint" objects (ns3::Ipv4EndPoint) for TCP,
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* and SHOULD checksum packets its receives from the socket layer going down
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* the stack , but currently checksumming is disabled. It also recieves
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* packets from IP, and forwards them up to the endpoints.
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*/
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class TcpL4Protocol : public Ipv4L4Protocol {
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public:
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static TypeId GetTypeId (void);
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static const uint8_t PROT_NUMBER;
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/**
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* \brief Constructor
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*/
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TcpL4Protocol ();
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virtual ~TcpL4Protocol ();
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void SetNode (Ptr<Node> node);
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virtual int GetProtocolNumber (void) const;
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/**
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* \return A smart Socket pointer to a TcpSocketImpl, allocated by this instance
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* of the TCP protocol
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*/
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Ptr<Socket> CreateSocket (void);
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Ipv4EndPoint *Allocate (void);
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Ipv4EndPoint *Allocate (Ipv4Address address);
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Ipv4EndPoint *Allocate (uint16_t port);
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Ipv4EndPoint *Allocate (Ipv4Address address, uint16_t port);
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Ipv4EndPoint *Allocate (Ipv4Address localAddress, uint16_t localPort,
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Ipv4Address peerAddress, uint16_t peerPort);
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void DeAllocate (Ipv4EndPoint *endPoint);
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// // called by TcpSocketImpl.
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// bool Connect (const Ipv4Address& saddr, const Ipv4Address& daddr,
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// uint16_t sport, uint16_t dport);
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/**
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* \brief Send a packet via TCP
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* \param packet The packet to send
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* \param saddr The source Ipv4Address
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* \param daddr The destination Ipv4Address
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* \param sport The source port number
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* \param dport The destination port number
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* \param oif The output interface bound. Defaults to null (unspecified).
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*/
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void Send (Ptr<Packet> packet,
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Ipv4Address saddr, Ipv4Address daddr,
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uint16_t sport, uint16_t dport, Ptr<NetDevice> oif = 0);
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/**
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* \brief Recieve a packet up the protocol stack
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* \param p The Packet to dump the contents into
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* \param source The source's Ipv4Address
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* \param destination The destinations Ipv4Address
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* \param incomingInterface The Ipv4Interface it was received on
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*/
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virtual enum Ipv4L4Protocol::RxStatus Receive (Ptr<Packet> p,
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Ipv4Address const &source,
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Ipv4Address const &destination,
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Ptr<Ipv4Interface> incomingInterface);
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protected:
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virtual void DoDispose (void);
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/*
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* This function will notify other components connected to the node that a new stack member is now connected
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* This will be used to notify Layer 3 protocol of layer 4 protocol stack to connect them together.
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*/
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virtual void NotifyNewAggregate ();
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private:
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Ptr<Node> m_node;
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Ipv4EndPointDemux *m_endPoints;
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ObjectFactory m_rttFactory;
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private:
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friend class TcpSocketImpl;
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void SendPacket (Ptr<Packet>, const TcpHeader &,
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Ipv4Address, Ipv4Address, Ptr<NetDevice> oif = 0);
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static ObjectFactory GetDefaultRttEstimatorFactory (void);
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TcpL4Protocol (const TcpL4Protocol &o);
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TcpL4Protocol &operator = (const TcpL4Protocol &o);
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std::vector<Ptr<TcpSocketImpl> > m_sockets;
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};
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}; // namespace ns3
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#endif /* TCP_L4_PROTOCOL_H */
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