Generic traffic generator installer for ns-3

installTrafficGenerator.cc

void installTrafficGenerator(Ptr<ns3::Node> fromNode, Ptr<ns3::Node> toNode, int port, std::string offeredLoad, int packetSize, int simulationTime, int warmupTime ) {

	Ptr<Ipv4> ipv4 = toNode->GetObject<Ipv4> (); // Get Ipv4 instance of the node
	Ipv4Address addr = ipv4->GetAddress (1, 0).GetLocal (); // Get Ipv4InterfaceAddress of xth interface.

	ApplicationContainer sourceApplications, sinkApplications;

	uint8_t tosValue = 0x70; //AC_BE
	
	//Add random fuzz to app start time
	double min = 0.0;
	double max = 1.0;
	Ptr<UniformRandomVariable> fuzz = CreateObject<UniformRandomVariable> ();
	fuzz->SetAttribute ("Min", DoubleValue (min));
	fuzz->SetAttribute ("Max", DoubleValue (max));		

	InetSocketAddress sinkSocket (addr, port);
	sinkSocket.SetTos (tosValue);
	OnOffHelper onOffHelper ("ns3::UdpSocketFactory", sinkSocket);
	onOffHelper.SetConstantRate (DataRate (offeredLoad + "Mbps"), packetSize);
	sourceApplications.Add (onOffHelper.Install (fromNode)); //fromNode
	PacketSinkHelper packetSinkHelper ("ns3::UdpSocketFactory", sinkSocket);
	sinkApplications.Add (packetSinkHelper.Install (toNode)); //toNode

	sinkApplications.Start (Seconds (warmupTime));
	sinkApplications.Stop (Seconds (simulationTime));
	sourceApplications.Start (Seconds (warmupTime+fuzz->GetValue ()));
	sourceApplications.Stop (Seconds (simulationTime));
}