コード例 #1
0
//
// Network topology
//
//       n0    n1   n2   n3
//       |     |    |    |
//     =====================
//
// - Packet socket flow from n0 to n1 and from node n3 to n0
// -- We will test reception at node n0
// - Default 512 byte packets generated by traffic generator
//
void
CsmaPacketSocketTestCase::DoRun (void)
{
  // Here, we will explicitly create four nodes.
  NodeContainer nodes;
  nodes.Create (4);

  PacketSocketHelper packetSocket;
  packetSocket.Install (nodes);

  // create the shared medium used by all csma devices.
  Ptr<CsmaChannel> channel = CreateObjectWithAttributes<CsmaChannel> (
      "DataRate", DataRateValue (DataRate (5000000)),
      "Delay", TimeValue (MilliSeconds (2)));

  // use a helper function to connect our nodes to the shared channel.
  CsmaHelper csma;
  csma.SetDeviceAttribute ("EncapsulationMode", StringValue ("Llc"));
  NetDeviceContainer devs = csma.Install (nodes, channel);

  // Create the OnOff application to send raw datagrams
  //
  // Make packets be sent about every DefaultPacketSize / DataRate = 
  // 4096 bits / (5000 bits/second) = 0.82 second.
  PacketSocketAddress socket;
  socket.SetSingleDevice (devs.Get (0)->GetIfIndex ());
  socket.SetPhysicalAddress (devs.Get (1)->GetAddress ());
  socket.SetProtocol (2);
  OnOffHelper onoff ("ns3::PacketSocketFactory", Address (socket));
  onoff.SetConstantRate (DataRate (5000));
  ApplicationContainer apps = onoff.Install (nodes.Get (0));
  apps.Start (Seconds (1.0));
  apps.Stop (Seconds (10.0));

  socket.SetSingleDevice (devs.Get (3)->GetIfIndex ());
  socket.SetPhysicalAddress (devs.Get (0)->GetAddress ());
  socket.SetProtocol (3);
  onoff.SetAttribute ("Remote", AddressValue (socket));
  apps = onoff.Install (nodes.Get (3));
  apps.Start (Seconds (1.0));
  apps.Stop (Seconds (10.0));

  PacketSinkHelper sink = PacketSinkHelper ("ns3::PacketSocketFactory",
                                            socket);
  apps = sink.Install (nodes.Get (0));
  apps.Start (Seconds (0.0));
  apps.Stop (Seconds (20.0));

  // Trace receptions
  Config::Connect ("/NodeList/0/ApplicationList/*/$ns3::PacketSink/Rx",
                   MakeCallback (&CsmaPacketSocketTestCase::SinkRx, this));
 
  Simulator::Run ();
  Simulator::Destroy ();

  // We should have received 10 packets on node 0
  NS_TEST_ASSERT_MSG_EQ (m_count, 10, "Node 0 should have received 10 packets");
}
コード例 #2
0
//
// Network topology
//    (sender)         (receiver)
//       n0    n1   n2   n3
//       |     |    |    |
//     =====================
//
// Node n0 sends data to node n3 over a raw IP socket.  The protocol
// number used is 2.
//
void
CsmaRawIpSocketTestCase::DoRun (void)
{
  // Here, we will explicitly create four nodes.
  NodeContainer c;
  c.Create (4);

  // connect all our nodes to a shared channel.
  CsmaHelper csma;
  csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate (5000000)));
  csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
  csma.SetDeviceAttribute ("EncapsulationMode", StringValue ("Llc"));
  NetDeviceContainer devs = csma.Install (c);

  // add an ip stack to all nodes.
  InternetStackHelper ipStack;
  ipStack.Install (c);

  // assign ip addresses
  Ipv4AddressHelper ip;
  ip.SetBase ("192.168.1.0", "255.255.255.0");
  Ipv4InterfaceContainer addresses = ip.Assign (devs);

  // IP protocol configuration
  //
  // Make packets be sent about every DefaultPacketSize / DataRate = 
  // 4096 bits / (5000 bits/second) = 0.82 second.
  Config::SetDefault ("ns3::Ipv4RawSocketImpl::Protocol", StringValue ("2"));
  InetSocketAddress dst = InetSocketAddress (addresses.GetAddress (3));
  OnOffHelper onoff = OnOffHelper ("ns3::Ipv4RawSocketFactory", dst);
  onoff.SetConstantRate (DataRate (5000));

  ApplicationContainer apps = onoff.Install (c.Get (0));
  apps.Start (Seconds (1.0));
  apps.Stop (Seconds (10.0));

  PacketSinkHelper sink = PacketSinkHelper ("ns3::Ipv4RawSocketFactory", dst);
  apps = sink.Install (c.Get (3));
  apps.Start (Seconds (0.0));
  apps.Stop (Seconds (12.0));

  // Trace receptions
  Config::ConnectWithoutContext ("/NodeList/3/ApplicationList/0/$ns3::PacketSink/Rx", 
                                 MakeCallback (&CsmaRawIpSocketTestCase::SinkRx, this));

  Simulator::Run ();
  Simulator::Destroy ();

  // We should have sent and received 10 packets
  NS_TEST_ASSERT_MSG_EQ (m_count, 10, "Node 3 should have received 10 packets");
}
コード例 #3
0
ファイル: udp-echo.cpp プロジェクト: shuiziliuBUPT/HelloWorld
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 ("UdpEchoExample", LOG_LEVEL_INFO);
  LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_ALL);
  LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_ALL);
#endif
//
// Allow the user to override any of the defaults and the above Bind() at
// run-time, via command-line arguments
//
  bool useV6 = false;
  Address serverAddress;

  CommandLine cmd;
  cmd.AddValue ("useIpv6", "Use Ipv6", useV6);
  cmd.Parse (argc, argv);
//
// Explicitly create the nodes required by the topology (shown above).
//
  NS_LOG_INFO ("Create nodes.");
  NodeContainer n;
  n.Create (4);

  InternetStackHelper internet;
  internet.Install (n);

  NS_LOG_INFO ("Create channels.");
//
// Explicitly create the channels required by the topology (shown above).
//
  CsmaHelper csma;
  csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate (5000000)));
  csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
  csma.SetDeviceAttribute ("Mtu", UintegerValue (1400));
  NetDeviceContainer d = csma.Install (n);

//
// We've got the "hardware" in place.  Now we need to add IP addresses.
//
  NS_LOG_INFO ("Assign IP Addresses.");
  if (useV6 == false)
    {
      Ipv4AddressHelper ipv4;
      ipv4.SetBase ("10.1.1.0", "255.255.255.0");
      Ipv4InterfaceContainer i = ipv4.Assign (d);
      serverAddress = Address(i.GetAddress (1));
    }
  else
    {
      Ipv6AddressHelper ipv6;
      ipv6.SetBase ("2001:0000:f00d:cafe::", Ipv6Prefix (64));
      Ipv6InterfaceContainer i6 = ipv6.Assign (d);
      serverAddress = Address(i6.GetAddress (1,1));
    }

  NS_LOG_INFO ("Create Applications.");
//
// Create a UdpEchoServer application on node one.
//
  uint16_t port = 9;  // well-known echo port number
  UdpEchoServerHelper server (port);
  ApplicationContainer apps = server.Install (n.Get (1));
  apps.Start (Seconds (1.0));
  apps.Stop (Seconds (10.0));

//
// Create a UdpEchoClient application to send UDP datagrams from node zero to
// node one.
//
  uint32_t packetSize = 1024;
  uint32_t maxPacketCount = 1;
  Time interPacketInterval = Seconds (1.);
  UdpEchoClientHelper client (serverAddress, port);
  client.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount));
  client.SetAttribute ("Interval", TimeValue (interPacketInterval));
  client.SetAttribute ("PacketSize", UintegerValue (packetSize));
  apps = client.Install (n.Get (0));
  apps.Start (Seconds (2.0));
  apps.Stop (Seconds (10.0));

#if 0
//
// Users may find it convenient to initialize echo packets with actual data;
// the below lines suggest how to do this
//
  client.SetFill (apps.Get (0), "Hello World");

  client.SetFill (apps.Get (0), 0xa5, 1024);

  uint8_t fill[] = { 0, 1, 2, 3, 4, 5, 6};
  client.SetFill (apps.Get (0), fill, sizeof(fill), 1024);
#endif

  AsciiTraceHelper ascii;
  csma.EnableAsciiAll (ascii.CreateFileStream ("udp-echo.tr"));
  csma.EnablePcapAll ("udp-echo", false);

//
// Now, do the actual simulation.
//
  NS_LOG_INFO ("Run Simulation.");
  Simulator::Run ();
  Simulator::Destroy ();
  NS_LOG_INFO ("Done.");
}
コード例 #4
0
int
main (int argc, char *argv[])
{

  CommandLine cmd;
  cmd.Parse (argc, argv);

  // Here, we will explicitly create four nodes.
  NS_LOG_INFO ("Create nodes.");
  NodeContainer c;
  c.Create (4);

  // connect all our nodes to a shared channel.
  NS_LOG_INFO ("Build Topology.");
  CsmaHelper csma;
  csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate (5000000)));
  csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
  csma.SetDeviceAttribute ("EncapsulationMode", StringValue ("Llc"));
  NetDeviceContainer devs = csma.Install (c);

  // add an ip stack to all nodes.
  NS_LOG_INFO ("Add ip stack.");
  InternetStackHelper ipStack;
  ipStack.Install (c);

  // assign ip addresses
  NS_LOG_INFO ("Assign ip addresses.");
  Ipv4AddressHelper ip;
  ip.SetBase ("192.168.1.0", "255.255.255.0");
  Ipv4InterfaceContainer addresses = ip.Assign (devs);

  NS_LOG_INFO ("Create Source");
  Config::SetDefault ("ns3::Ipv4RawSocketImpl::Protocol", StringValue ("2"));
  InetSocketAddress dst = InetSocketAddress (addresses.GetAddress (3));
  OnOffHelper onoff = OnOffHelper ("ns3::Ipv4RawSocketFactory", dst);
  onoff.SetConstantRate (DataRate (15000));
  onoff.SetAttribute ("PacketSize", UintegerValue (1200));


  ApplicationContainer apps = onoff.Install (c.Get (0));
  apps.Start (Seconds (1.0));
  apps.Stop (Seconds (10.0));

  NS_LOG_INFO ("Create Sink.");
  PacketSinkHelper sink = PacketSinkHelper ("ns3::Ipv4RawSocketFactory", dst);
  apps = sink.Install (c.Get (3));
  apps.Start (Seconds (0.0));
  apps.Stop (Seconds (11.0));

  NS_LOG_INFO ("Create pinger");
  V4PingHelper ping = V4PingHelper (addresses.GetAddress (2));
  NodeContainer pingers;
  pingers.Add (c.Get (0));
  pingers.Add (c.Get (1));
  pingers.Add (c.Get (3));
  apps = ping.Install (pingers);
  apps.Start (Seconds (2.0));
  apps.Stop (Seconds (5.0));

  NS_LOG_INFO ("Configure Tracing.");
  // first, pcap tracing in non-promiscuous mode
  csma.EnablePcapAll ("csma-ping", false);

  // then, print what the packet sink receives.
  Config::ConnectWithoutContext ("/NodeList/3/ApplicationList/0/$ns3::PacketSink/Rx", 
                                 MakeCallback (&SinkRx));
  // finally, print the ping rtts.
  Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::V4Ping/Rtt",
                   MakeCallback (&PingRtt));

  Packet::EnablePrinting ();


  NS_LOG_INFO ("Run Simulation.");
  Simulator::Run ();
  Simulator::Destroy ();
  NS_LOG_INFO ("Done.");
}