/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
//
// Example of the sending of a datagram to a broadcast address
//
// Network topology
// ==============
// | |
// n0 n1 n2
// | |
// ==========
//
// n0 originates UDP broadcast to 255.255.255.255/discard port, which
// is replicated and received on both n1 and n2
#include <iostream>
#include <fstream>
#include <string>
#include <cassert>
#include "ns3/core-module.h"
#include "ns3/simulator-module.h"
#include "ns3/node-module.h"
#include "ns3/helper-module.h"
using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("CsmaBroadcastExample");
int
main (int argc, char *argv[])
{
// Users may find it convenient to turn on explicit debugging
// for selected modules; the below lines suggest how to do this
#if 0
LogComponentEnable ("CsmaBroadcastExample", LOG_LEVEL_INFO);
#endif
//
// Make the random number generators generate reproducible results.
//
RandomVariable::UseGlobalSeed (1, 1, 2, 3, 5, 8);
// Allow the user to override any of the defaults and the above
// Bind()s at run-time, via command-line arguments
CommandLine cmd;
cmd.Parse (argc, argv);
NS_LOG_INFO ("Create nodes.");
NodeContainer c;
c.Create (3);
NodeContainer c0 = NodeContainer (c.Get (0), c.Get (1));
NodeContainer c1 = NodeContainer (c.Get (0), c.Get (2));
NS_LOG_INFO ("Build Topology.");
CsmaHelper csma;
csma.SetChannelParameter ("BitRate", DataRateValue (DataRate(5000000)));
csma.SetChannelParameter ("Delay", TimeValue (MilliSeconds(2)));
NetDeviceContainer n0 = csma.Install (c0);
NetDeviceContainer n1 = csma.Install (c1);
InternetStackHelper internet;
internet.Install (c);
NS_LOG_INFO ("Assign IP Addresses.");
Ipv4AddressHelper ipv4;
ipv4.SetBase ("10.1.0.0", "255.255.255.0");
ipv4.Assign (n0);
ipv4.SetBase ("192.168.1.0", "255.255.255.0");
ipv4.Assign (n1);
// RFC 863 discard port ("9") indicates packet should be thrown away
// by the system. We allow this silent discard to be overridden
// by the PacketSink application.
uint16_t port = 9;
// Create the OnOff application to send UDP datagrams of size
// 512 bytes (default) at a rate of 500 Kb/s (default) from n0
NS_LOG_INFO ("Create Applications.");
OnOffHelper onoff ("ns3::Udp",
Address (InetSocketAddress (Ipv4Address ("255.255.255.255"), port)));
onoff.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (1)));
onoff.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0)));
ApplicationContainer app = onoff.Install (c0.Get (0));
// Start the application
app.Start (Seconds (1.0));
app.Stop (Seconds (10.0));
// Create an optional packet sink to receive these packets
PacketSinkHelper sink ("ns3::Udp",
Address (InetSocketAddress (Ipv4Address::GetAny (), port)));
sink.Install (c0.Get (1));
sink.Install (c1.Get (1));
// Also configure some tcpdump traces; each interface will be traced
// The output files will be named
// csma-broadcast.pcap-<nodeId>-<interfaceId>
// and can be read by the "tcpdump -tt -r" command
CsmaHelper::EnablePcap ("csma-broadcast");
std::ofstream ascii;
ascii.open ("csma-broadcast.tr");
CsmaHelper::EnableAscii (ascii);
NS_LOG_INFO ("Run Simulation.");
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
}