author | Tom Henderson <tomh@tomh.org> |
Fri, 20 Aug 2010 12:17:19 -0700 | |
changeset 6589 | 9c325569fb01 |
parent 6014 | d251d4a44fde |
permissions | -rw-r--r-- |
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
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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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*/ |
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/* Test program for multi-interface host, static routing |
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Destination host (10.20.1.2) |
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| |
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| 10.20.1.0/24 |
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DSTRTR |
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10.10.1.0/24 / \ 10.10.2.0/24 |
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/ \ |
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Rtr1 Rtr2 |
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10.1.1.0/24 | | 10.1.2.0/24 |
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| / |
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\ / |
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Source |
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*/ |
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#include <iostream> |
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#include <fstream> |
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#include <string> |
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#include <cassert> |
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#include "ns3/core-module.h" |
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#include "ns3/simulator-module.h" |
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#include "ns3/node-module.h" |
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#include "ns3/helper-module.h" |
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using namespace ns3; |
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NS_LOG_COMPONENT_DEFINE ("SocketBoundRoutingExample"); |
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void SendStuff (Ptr<Socket> sock, Ipv4Address dstaddr, uint16_t port); |
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void BindSock (Ptr<Socket> sock, Ptr<NetDevice> netdev); |
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void srcSocketRecv (Ptr<Socket> socket); |
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void dstSocketRecv (Ptr<Socket> socket); |
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int |
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main (int argc, char *argv[]) |
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{ |
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// Allow the user to override any of the defaults and the above |
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// DefaultValue::Bind ()s at run-time, via command-line arguments |
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CommandLine cmd; |
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cmd.Parse (argc, argv); |
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Ptr<Node> nSrc = CreateObject<Node> (); |
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Ptr<Node> nDst = CreateObject<Node> (); |
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Ptr<Node> nRtr1 = CreateObject<Node> (); |
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Ptr<Node> nRtr2 = CreateObject<Node> (); |
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Ptr<Node> nDstRtr = CreateObject<Node> (); |
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NodeContainer c = NodeContainer (nSrc, nDst, nRtr1, nRtr2, nDstRtr); |
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InternetStackHelper internet; |
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internet.Install (c); |
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// Point-to-point links |
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NodeContainer nSrcnRtr1 = NodeContainer (nSrc, nRtr1); |
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NodeContainer nSrcnRtr2 = NodeContainer (nSrc, nRtr2); |
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NodeContainer nRtr1nDstRtr = NodeContainer (nRtr1, nDstRtr); |
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NodeContainer nRtr2nDstRtr = NodeContainer (nRtr2, nDstRtr); |
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NodeContainer nDstRtrnDst = NodeContainer (nDstRtr, nDst); |
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// We create the channels first without any IP addressing information |
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PointToPointHelper p2p; |
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p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps")); |
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p2p.SetChannelAttribute ("Delay", StringValue ("2ms")); |
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NetDeviceContainer dSrcdRtr1 = p2p.Install (nSrcnRtr1); |
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NetDeviceContainer dSrcdRtr2 = p2p.Install (nSrcnRtr2); |
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NetDeviceContainer dRtr1dDstRtr = p2p.Install (nRtr1nDstRtr); |
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NetDeviceContainer dRtr2dDstRtr = p2p.Install (nRtr2nDstRtr); |
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NetDeviceContainer dDstRtrdDst = p2p.Install (nDstRtrnDst); |
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Ptr<NetDevice> SrcToRtr1=dSrcdRtr1.Get (0); |
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Ptr<NetDevice> SrcToRtr2=dSrcdRtr2.Get (0); |
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// Later, we add IP addresses. |
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Ipv4AddressHelper ipv4; |
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ipv4.SetBase ("10.1.1.0", "255.255.255.0"); |
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Ipv4InterfaceContainer iSrciRtr1 = ipv4.Assign (dSrcdRtr1); |
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ipv4.SetBase ("10.1.2.0", "255.255.255.0"); |
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Ipv4InterfaceContainer iSrciRtr2 = ipv4.Assign (dSrcdRtr2); |
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ipv4.SetBase ("10.10.1.0", "255.255.255.0"); |
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Ipv4InterfaceContainer iRtr1iDstRtr = ipv4.Assign (dRtr1dDstRtr); |
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ipv4.SetBase ("10.10.2.0", "255.255.255.0"); |
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Ipv4InterfaceContainer iRtr2iDstRtr = ipv4.Assign (dRtr2dDstRtr); |
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ipv4.SetBase ("10.20.1.0", "255.255.255.0"); |
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Ipv4InterfaceContainer iDstRtrDst = ipv4.Assign (dDstRtrdDst); |
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Ptr<Ipv4> ipv4Src = nSrc->GetObject<Ipv4> (); |
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Ptr<Ipv4> ipv4Rtr1 = nRtr1->GetObject<Ipv4> (); |
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Ptr<Ipv4> ipv4Rtr2 = nRtr2->GetObject<Ipv4> (); |
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Ptr<Ipv4> ipv4DstRtr = nDstRtr->GetObject<Ipv4> (); |
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Ptr<Ipv4> ipv4Dst = nDst->GetObject<Ipv4> (); |
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Ipv4StaticRoutingHelper ipv4RoutingHelper; |
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Ptr<Ipv4StaticRouting> staticRoutingSrc = ipv4RoutingHelper.GetStaticRouting (ipv4Src); |
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113 |
Ptr<Ipv4StaticRouting> staticRoutingRtr1 = ipv4RoutingHelper.GetStaticRouting (ipv4Rtr1); |
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114 |
Ptr<Ipv4StaticRouting> staticRoutingRtr2 = ipv4RoutingHelper.GetStaticRouting (ipv4Rtr2); |
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115 |
Ptr<Ipv4StaticRouting> staticRoutingDstRtr = ipv4RoutingHelper.GetStaticRouting (ipv4DstRtr); |
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116 |
Ptr<Ipv4StaticRouting> staticRoutingDst = ipv4RoutingHelper.GetStaticRouting (ipv4Dst); |
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117 |
|
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118 |
// Create static routes from Src to Dst |
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119 |
staticRoutingRtr1->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.10.1.2"), 2); |
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120 |
staticRoutingRtr2->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.10.2.2"), 2); |
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121 |
|
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122 |
// Two routes to same destination - setting separate metrics. |
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123 |
// You can switch these to see how traffic gets diverted via different routes |
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124 |
staticRoutingSrc->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.1.1.2"), 1,5); |
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125 |
staticRoutingSrc->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.1.2.2"), 2,10); |
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126 |
|
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127 |
// Creating static routes from DST to Source pointing to Rtr1 VIA Rtr2(!) |
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128 |
staticRoutingDst->AddHostRouteTo (Ipv4Address ("10.1.1.1"), Ipv4Address ("10.20.1.1"), 1); |
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129 |
staticRoutingDstRtr->AddHostRouteTo (Ipv4Address ("10.1.1.1"), Ipv4Address ("10.10.2.1"), 2); |
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130 |
staticRoutingRtr2->AddHostRouteTo (Ipv4Address ("10.1.1.1"), Ipv4Address ("10.1.2.1"), 1); |
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131 |
|
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132 |
Ipv4InterfaceAddress ifInAddrSrc=ipv4Src->GetAddress (1,0); |
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133 |
|
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134 |
// There are no apps that can utilize the Socket Option so doing the work directly.. |
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135 |
// Taken from tcp-large-transfer example |
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136 |
|
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137 |
Ptr<Socket> srcSocket = Socket::CreateSocket (nSrc, TypeId::LookupByName ("ns3::UdpSocketFactory")); |
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138 |
srcSocket->Bind (); |
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139 |
srcSocket->SetRecvCallback (MakeCallback (&srcSocketRecv)); |
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140 |
|
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141 |
Ptr<Socket> dstSocket = Socket::CreateSocket (nDst, TypeId::LookupByName ("ns3::UdpSocketFactory")); |
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142 |
uint16_t dstport = 12345; |
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143 |
Ipv4Address dstaddr ("10.20.1.2"); |
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144 |
InetSocketAddress dst = InetSocketAddress (dstaddr, dstport); |
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145 |
dstSocket->Bind (dst); |
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146 |
dstSocket->SetRecvCallback (MakeCallback (&dstSocketRecv)); |
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147 |
|
6014 | 148 |
AsciiTraceHelper ascii; |
149 |
p2p.EnableAsciiAll (ascii.CreateFileStream ("socket-bound-static-routing.tr")); |
|
6009
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150 |
p2p.EnablePcapAll ("socket-bound-static-routing"); |
5857
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151 |
|
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152 |
LogComponentEnableAll (LOG_PREFIX_TIME); |
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153 |
LogComponentEnable ("SocketBoundRoutingExample", LOG_LEVEL_INFO); |
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154 |
|
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155 |
// First packet as normal (goes via Rtr1) |
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156 |
Simulator::Schedule (Seconds (0.1),&SendStuff, srcSocket, dstaddr, dstport); |
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157 |
// Second via Rtr1 explicitly |
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158 |
Simulator::Schedule (Seconds (1.0),&BindSock, srcSocket, SrcToRtr1); |
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159 |
Simulator::Schedule (Seconds( 1.1),&SendStuff, srcSocket, dstaddr, dstport); |
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160 |
// Third via Rtr2 explicitly |
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161 |
Simulator::Schedule (Seconds (2.0),&BindSock, srcSocket, SrcToRtr2); |
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162 |
Simulator::Schedule (Seconds (2.1),&SendStuff, srcSocket, dstaddr, dstport); |
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163 |
// Fourth again as normal (goes via Rtr1) |
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164 |
Simulator::Schedule (Seconds (3.0),&BindSock, srcSocket, Ptr<NetDevice>(0)); |
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165 |
Simulator::Schedule (Seconds (3.1),&SendStuff, srcSocket, dstaddr, dstport); |
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166 |
// If you uncomment what's below, it results in ASSERT failing since you can't |
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167 |
// bind to a socket not existing on a node |
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168 |
// Simulator::Schedule(Seconds(4.0),&BindSock, srcSocket, dDstRtrdDst.Get(0)); |
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169 |
Simulator::Run (); |
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170 |
Simulator::Destroy (); |
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171 |
|
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172 |
return 0; |
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173 |
} |
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174 |
|
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175 |
void SendStuff(Ptr<Socket> sock, Ipv4Address dstaddr, uint16_t port) |
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176 |
{ |
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177 |
Ptr<Packet> p = Create<Packet> (); |
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178 |
p->AddPaddingAtEnd (100); |
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179 |
sock->SendTo (p, 0, InetSocketAddress (dstaddr,port)); |
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180 |
return; |
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181 |
} |
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182 |
|
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183 |
void BindSock(Ptr<Socket> sock, Ptr<NetDevice> netdev) |
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184 |
{ |
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185 |
sock->BindToNetDevice (netdev); |
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186 |
return; |
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187 |
} |
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188 |
|
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189 |
void |
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190 |
srcSocketRecv (Ptr<Socket> socket) |
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191 |
{ |
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192 |
Address from; |
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193 |
Ptr<Packet> packet = socket->RecvFrom (from); |
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194 |
packet->RemoveAllPacketTags (); |
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195 |
packet->RemoveAllByteTags (); |
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196 |
InetSocketAddress address = InetSocketAddress::ConvertFrom (from); |
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197 |
NS_LOG_INFO ("Source Received " << packet->GetSize () << " bytes from " << address.GetIpv4()); |
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198 |
if (socket->GetBoundNetDevice ()) |
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199 |
{ |
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200 |
NS_LOG_INFO ("Socket was bound"); |
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201 |
} |
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202 |
else |
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203 |
{ |
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204 |
NS_LOG_INFO ("Socket was not bound"); |
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205 |
} |
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206 |
} |
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207 |
|
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208 |
void |
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209 |
dstSocketRecv (Ptr<Socket> socket) |
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210 |
{ |
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211 |
Address from; |
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212 |
Ptr<Packet> packet = socket->RecvFrom (from); |
da61e3319def
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213 |
packet->RemoveAllPacketTags (); |
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214 |
packet->RemoveAllByteTags (); |
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215 |
InetSocketAddress address = InetSocketAddress::ConvertFrom (from); |
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216 |
NS_LOG_INFO ("Destination Received " << packet->GetSize () << " bytes from " << address.GetIpv4 ()); |
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217 |
NS_LOG_INFO ("Triggering packet back to source node's interface 1"); |
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218 |
SendStuff(socket, Ipv4Address ("10.1.1.1"), address.GetPort ()); |
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219 |
} |