author | Tom Henderson <tomh@tomh.org> |
Fri, 20 Aug 2010 12:17:19 -0700 | |
changeset 6589 | 9c325569fb01 |
parent 6451 | 77184657a698 |
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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* Copyright (c) 2009 The Boeing Company |
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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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|
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// |
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// This script configures two nodes on an 802.11b physical layer, with |
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// 802.11b NICs in adhoc mode, and by default, sends one packet of 1000 |
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// (application) bytes to the other node. The physical layer is configured |
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// to receive at a fixed RSS (regardless of the distance and transmit |
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// power); therefore, changing position of the nodes has no effect. |
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// |
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// There are a number of command-line options available to control |
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// the default behavior. The list of available command-line options |
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// can be listed with the following command: |
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// ./waf --run "wifi-simple-adhoc --help" |
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// |
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// For instance, for this configuration, the physical layer will |
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// stop successfully receiving packets when rss drops below -97 dBm. |
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// To see this effect, try running: |
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// |
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// ./waf --run "wifi-simple-adhoc --rss=-97 --numPackets=20" |
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// ./waf --run "wifi-simple-adhoc --rss=-98 --numPackets=20" |
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// ./waf --run "wifi-simple-adhoc --rss=-99 --numPackets=20" |
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// |
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// Note that all ns-3 attributes (not just the ones exposed in the below |
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// script) can be changed at command line; see the documentation. |
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// |
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// This script can also be helpful to put the Wifi layer into verbose |
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// logging mode; this command will turn on all wifi logging: |
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// |
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// ./waf --run "wifi-simple-adhoc --verbose=1" |
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// |
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// When you are done, you will notice two pcap trace files in your directory. |
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// If you have tcpdump installed, you can try this: |
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// |
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// tcpdump -r wifi-simple-adhoc-0-0.pcap -nn -tt |
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// |
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#include "ns3/core-module.h" |
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#include "ns3/common-module.h" |
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#include "ns3/node-module.h" |
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#include "ns3/helper-module.h" |
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#include "ns3/mobility-module.h" |
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#include "ns3/contrib-module.h" |
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#include "ns3/wifi-module.h" |
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#include <iostream> |
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#include <fstream> |
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#include <vector> |
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#include <string> |
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NS_LOG_COMPONENT_DEFINE ("WifiSimpleAdhoc"); |
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using namespace ns3; |
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void ReceivePacket (Ptr<Socket> socket) |
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{ |
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NS_LOG_UNCOND ("Received one packet!"); |
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} |
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static void GenerateTraffic (Ptr<Socket> socket, uint32_t pktSize, |
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uint32_t pktCount, Time pktInterval ) |
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{ |
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if (pktCount > 0) |
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{ |
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socket->Send (Create<Packet> (pktSize)); |
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Simulator::Schedule (pktInterval, &GenerateTraffic, |
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socket, pktSize,pktCount-1, pktInterval); |
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} |
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else |
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{ |
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socket->Close (); |
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} |
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} |
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int main (int argc, char *argv[]) |
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{ |
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std::string phyMode ("DsssRate1Mbps"); |
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double rss = -80; // -dBm |
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uint32_t packetSize = 1000; // bytes |
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uint32_t numPackets = 1; |
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double interval = 1.0; // seconds |
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bool verbose = false; |
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CommandLine cmd; |
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cmd.AddValue ("phyMode", "Wifi Phy mode", phyMode); |
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cmd.AddValue ("rss", "received signal strength", rss); |
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cmd.AddValue ("packetSize", "size of application packet sent", packetSize); |
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cmd.AddValue ("numPackets", "number of packets generated", numPackets); |
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cmd.AddValue ("interval", "interval (seconds) between packets", interval); |
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cmd.AddValue ("verbose", "turn on all WifiNetDevice log components", verbose); |
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cmd.Parse (argc, argv); |
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// Convert to time object |
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Time interPacketInterval = Seconds (interval); |
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113 |
|
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// disable fragmentation for frames below 2200 bytes |
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Config::SetDefault ("ns3::WifiRemoteStationManager::FragmentationThreshold", StringValue ("2200")); |
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// turn off RTS/CTS for frames below 2200 bytes |
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Config::SetDefault ("ns3::WifiRemoteStationManager::RtsCtsThreshold", StringValue ("2200")); |
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118 |
// Fix non-unicast data rate to be the same as that of unicast |
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119 |
Config::SetDefault ("ns3::WifiRemoteStationManager::NonUnicastMode", |
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120 |
StringValue (phyMode)); |
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121 |
|
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122 |
NodeContainer c; |
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c.Create (2); |
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124 |
|
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125 |
// The below set of helpers will help us to put together the wifi NICs we want |
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126 |
WifiHelper wifi; |
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127 |
if (verbose) |
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128 |
{ |
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wifi.EnableLogComponents (); // Turn on all Wifi logging |
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130 |
} |
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131 |
wifi.SetStandard (WIFI_PHY_STANDARD_80211b); |
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132 |
|
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133 |
YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default (); |
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134 |
// This is one parameter that matters when using FixedRssLossModel |
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135 |
// set it to zero; otherwise, gain will be added |
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wifiPhy.Set ("RxGain", DoubleValue (0) ); |
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// ns-3 supports RadioTap and Prism tracing extensions for 802.11b |
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wifiPhy.SetPcapDataLinkType (YansWifiPhyHelper::DLT_IEEE802_11_RADIO); |
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139 |
|
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140 |
YansWifiChannelHelper wifiChannel ; |
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141 |
wifiChannel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel"); |
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142 |
// The below FixedRssLossModel will cause the rss to be fixed regardless |
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143 |
// of the distance between the two stations, and the transmit power |
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wifiChannel.AddPropagationLoss ("ns3::FixedRssLossModel","Rss",DoubleValue(rss)); |
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wifiPhy.SetChannel (wifiChannel.Create ()); |
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146 |
|
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147 |
// Add a non-QoS upper mac, and disable rate control |
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NqosWifiMacHelper wifiMac = NqosWifiMacHelper::Default (); |
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149 |
wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager", |
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"DataMode",StringValue(phyMode), |
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151 |
"ControlMode",StringValue(phyMode)); |
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152 |
// Set it to adhoc mode |
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153 |
wifiMac.SetType ("ns3::AdhocWifiMac"); |
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154 |
NetDeviceContainer devices = wifi.Install (wifiPhy, wifiMac, c); |
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155 |
|
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156 |
// Note that with FixedRssLossModel, the positions below are not |
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157 |
// used for received signal strength. |
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158 |
MobilityHelper mobility; |
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159 |
Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> (); |
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160 |
positionAlloc->Add (Vector (0.0, 0.0, 0.0)); |
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161 |
positionAlloc->Add (Vector (5.0, 0.0, 0.0)); |
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162 |
mobility.SetPositionAllocator (positionAlloc); |
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163 |
mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel"); |
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164 |
mobility.Install (c); |
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165 |
|
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166 |
InternetStackHelper internet; |
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167 |
internet.Install (c); |
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168 |
|
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169 |
Ipv4AddressHelper ipv4; |
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170 |
NS_LOG_INFO ("Assign IP Addresses."); |
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171 |
ipv4.SetBase ("10.1.1.0", "255.255.255.0"); |
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172 |
Ipv4InterfaceContainer i = ipv4.Assign (devices); |
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173 |
|
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174 |
TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory"); |
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175 |
Ptr<Socket> recvSink = Socket::CreateSocket (c.Get (0), tid); |
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176 |
InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 80); |
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177 |
recvSink->Bind (local); |
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178 |
recvSink->SetRecvCallback (MakeCallback (&ReceivePacket)); |
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179 |
|
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180 |
Ptr<Socket> source = Socket::CreateSocket (c.Get (1), tid); |
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181 |
InetSocketAddress remote = InetSocketAddress (Ipv4Address ("255.255.255.255"), 80); |
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source->SetAllowBroadcast (true); |
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183 |
source->Connect (remote); |
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184 |
|
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185 |
// Tracing |
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186 |
wifiPhy.EnablePcap ("wifi-simple-adhoc", devices); |
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187 |
|
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188 |
// Output what we are doing |
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189 |
NS_LOG_UNCOND ("Testing " << numPackets << " packets sent with receiver rss " << rss ); |
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190 |
|
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Simulator::ScheduleWithContext (source->GetNode ()->GetId (), |
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Seconds (1.0), &GenerateTraffic, |
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source, packetSize, numPackets, interPacketInterval); |
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194 |
|
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195 |
Simulator::Run (); |
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196 |
Simulator::Destroy (); |
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197 |
|
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198 |
return 0; |
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199 |
} |
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200 |