157 lines
3.5 KiB
C++
157 lines
3.5 KiB
C++
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2005 INRIA
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* All rights reserved.
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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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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*/
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#include "ns3/assert.h"
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#include "ns3/packet.h"
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#include "ns3/empty-trace-resolver.h"
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#include "udp.h"
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#include "udp-header.h"
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#include "ipv4-end-point-demux.h"
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#include "ipv4-end-point.h"
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#include "node.h"
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#include "ipv4.h"
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#include "l3-demux.h"
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#include "udp-socket.h"
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namespace ns3 {
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/* see http://www.iana.org/assignments/protocol-numbers */
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const uint8_t Udp::PROT_NUMBER = 17;
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Udp::Udp (Node *node)
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: Ipv4L4Protocol (PROT_NUMBER, 2),
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m_node (node),
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m_endPoints (new Ipv4EndPointDemux ())
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{
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m_node->Ref ();
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}
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Udp::~Udp ()
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{
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Dispose ();
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}
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TraceResolver *
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Udp::CreateTraceResolver (TraceContext const &context)
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{
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return new EmptyTraceResolver (context);
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}
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void
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Udp::DoDispose (void)
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{
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if (m_endPoints != 0)
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{
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delete m_endPoints;
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m_endPoints = 0;
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}
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if (m_node != 0)
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{
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m_node->Unref ();
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m_node = 0;
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}
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Ipv4L4Protocol::DoDispose ();
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}
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Socket *
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Udp::CreateSocket (void)
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{
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return new UdpSocket (m_node);
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}
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Ipv4EndPoint *
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Udp::Allocate (void)
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{
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return m_endPoints->Allocate ();
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}
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Ipv4EndPoint *
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Udp::Allocate (Ipv4Address address)
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{
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return m_endPoints->Allocate (address);
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}
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Ipv4EndPoint *
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Udp::Allocate (uint16_t port)
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{
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return m_endPoints->Allocate (port);
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}
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Ipv4EndPoint *
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Udp::Allocate (Ipv4Address address, uint16_t port)
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{
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return m_endPoints->Allocate (address, port);
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}
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Ipv4EndPoint *
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Udp::Allocate (Ipv4Address localAddress, uint16_t localPort,
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Ipv4Address peerAddress, uint16_t peerPort)
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{
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return m_endPoints->Allocate (localAddress, localPort,
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peerAddress, peerPort);
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}
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void
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Udp::DeAllocate (Ipv4EndPoint *endPoint)
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{
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m_endPoints->DeAllocate (endPoint);
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}
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void
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Udp::Receive(Packet& packet,
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Ipv4Address const &source,
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Ipv4Address const &destination)
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{
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UdpHeader udpHeader;
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packet.RemoveHeader (udpHeader);
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Ipv4EndPoint *endPoint = m_endPoints->Lookup (destination, udpHeader.GetDestination (),
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source, udpHeader.GetSource ());
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if (endPoint == 0)
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{
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return;
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}
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endPoint->ForwardUp (packet, source, udpHeader.GetSource ());
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}
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void
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Udp::Send (Packet packet,
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Ipv4Address saddr, Ipv4Address daddr,
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uint16_t sport, uint16_t dport)
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{
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UdpHeader udpHeader;
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udpHeader.SetDestination (dport);
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udpHeader.SetSource (sport);
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udpHeader.SetPayloadSize (packet.GetSize ());
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udpHeader.InitializeChecksum (saddr,
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daddr,
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PROT_NUMBER);
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packet.AddHeader (udpHeader);
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Ipv4 *ipv4 = m_node->GetIpv4 ();
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if (ipv4 != 0)
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{
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ipv4->Send (packet, saddr, daddr, PROT_NUMBER);
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ipv4->Unref ();
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}
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}
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}; // namespace ns3
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