122 lines
3.9 KiB
C++
122 lines
3.9 KiB
C++
/* -*- 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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// Example of the sending of a datagram to a broadcast address
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//
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// Network topology
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// ==============
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// | |
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// n0 n1 n2
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// | |
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// ==========
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//
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// n0 originates UDP broadcast to 255.255.255.255/discard port, which
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// is replicated and received on both n1 and n2
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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 ("CsmaBroadcastExample");
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int
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main (int argc, char *argv[])
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{
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// Users may find it convenient to turn on explicit debugging
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// for selected modules; the below lines suggest how to do this
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#if 0
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LogComponentEnable ("CsmaBroadcastExample", LOG_LEVEL_INFO);
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#endif
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LogComponentEnable ("CsmaBroadcastExample", LOG_PREFIX_TIME);
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// Allow the user to override any of the defaults and the above
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// 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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NS_LOG_INFO ("Create nodes.");
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NodeContainer c;
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c.Create (3);
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NodeContainer c0 = NodeContainer (c.Get (0), c.Get (1));
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NodeContainer c1 = NodeContainer (c.Get (0), c.Get (2));
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NS_LOG_INFO ("Build Topology.");
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CsmaHelper csma;
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csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate(5000000)));
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csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds(2)));
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NetDeviceContainer n0 = csma.Install (c0);
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NetDeviceContainer n1 = csma.Install (c1);
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InternetStackHelper internet;
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internet.Install (c);
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NS_LOG_INFO ("Assign IP Addresses.");
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Ipv4AddressHelper ipv4;
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ipv4.SetBase ("10.1.0.0", "255.255.255.0");
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ipv4.Assign (n0);
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ipv4.SetBase ("192.168.1.0", "255.255.255.0");
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ipv4.Assign (n1);
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// RFC 863 discard port ("9") indicates packet should be thrown away
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// by the system. We allow this silent discard to be overridden
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// by the PacketSink application.
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uint16_t port = 9;
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// Create the OnOff application to send UDP datagrams of size
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// 512 bytes (default) at a rate of 500 Kb/s (default) from n0
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NS_LOG_INFO ("Create Applications.");
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OnOffHelper onoff ("ns3::UdpSocketFactory",
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Address (InetSocketAddress (Ipv4Address ("255.255.255.255"), port)));
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onoff.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (1)));
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onoff.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0)));
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ApplicationContainer app = onoff.Install (c0.Get (0));
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// Start the application
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app.Start (Seconds (1.0));
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app.Stop (Seconds (10.0));
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// Create an optional packet sink to receive these packets
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PacketSinkHelper sink ("ns3::UdpSocketFactory",
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Address (InetSocketAddress (Ipv4Address::GetAny (), port)));
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sink.Install (c0.Get (1));
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sink.Install (c1.Get (1));
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// Also configure some tcpdump traces; each interface will be traced
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// The output files will be named
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// csma-broadcast-<nodeId>-<interfaceId>.pcap
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// and can be read by the "tcpdump -tt -r" command
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CsmaHelper::EnablePcapAll ("csma-broadcast", false);
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std::ofstream ascii;
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ascii.open ("csma-broadcast.tr");
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CsmaHelper::EnableAsciiAll (ascii);
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NS_LOG_INFO ("Run Simulation.");
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Simulator::Run ();
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Simulator::Destroy ();
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NS_LOG_INFO ("Done.");
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}
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