first.cc

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/*
 * SPDX-License-Identifier: GPL-2.0-only
 */
 
#include "ns3/applications-module.h"
#include "ns3/core-module.h"
#include "ns3/internet-module.h"
#include "ns3/network-module.h"
#include "ns3/point-to-point-module.h"
 
// Default Network Topology
//
//       10.1.1.0
// n0 -------------- n1
//    point-to-point
//
 
using namespace ns3;
 
NS_LOG_COMPONENT_DEFINE("FirstScriptExample");
 
int
main(int argc, char* argv[])
{
    CommandLine cmd(__FILE__);
    cmd.Parse(argc, argv);
 
    Time::SetResolution(Time::NS);
    LogComponentEnable("UdpEchoClientApplication", LOG_LEVEL_INFO);
    LogComponentEnable("UdpEchoServerApplication", LOG_LEVEL_INFO);
 
    NodeContainer nodes;
    nodes.Create(2);
 
    PointToPointHelper pointToPoint;
    pointToPoint.SetDeviceAttribute("DataRate", StringValue("5Mbps"));
    pointToPoint.SetChannelAttribute("Delay", StringValue("2ms"));
 
    NetDeviceContainer devices;
    devices = pointToPoint.Install(nodes);
 
    InternetStackHelper stack;
    stack.Install(nodes);
 
    Ipv4AddressHelper address;
    address.SetBase("10.1.1.0", "255.255.255.0");
 
    Ipv4InterfaceContainer interfaces = address.Assign(devices);
 
    UdpEchoServerHelper echoServer(9);
 
    ApplicationContainer serverApps = echoServer.Install(nodes.Get(1));
    serverApps.Start(Seconds(1.0));
    serverApps.Stop(Seconds(10.0));
 
    UdpEchoClientHelper echoClient(interfaces.GetAddress(1), 9);
    echoClient.SetAttribute("MaxPackets", UintegerValue(1));
    echoClient.SetAttribute("Interval", TimeValue(Seconds(1.0)));
    echoClient.SetAttribute("PacketSize", UintegerValue(1024));
 
    ApplicationContainer clientApps = echoClient.Install(nodes.Get(0));
    clientApps.Start(Seconds(2.0));
    clientApps.Stop(Seconds(10.0));
 
    Simulator::Run();
    Simulator::Destroy();
    return 0;
}