/* -*- 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

 */

// Port of ns-2/tcl/ex/simple.tcl to ns-3

//

// Network topology

//

//       n0    n1   n2   n3

//       |     |    |    |

//     =====================

//

// - CBR/UDP flows from n0 to n1, and from n3 to n0

// - UDP packet size of 210 bytes, with per-packet interval 0.00375 sec.

//   (i.e., DataRate of 448,000 bps)

// - DropTail queues 

// - Tracing of queues and packet receptions to file "csma-cd-one-subnet.tr"

#include <iostream>

#include <fstream>

#include <string>

#include <cassert>

#include "ns3/command-line.h"

#include "ns3/default-value.h"

#include "ns3/ptr.h"

#include "ns3/random-variable.h"

#include "ns3/debug.h"

#include "ns3/simulator.h"

#include "ns3/nstime.h"

#include "ns3/data-rate.h"

#include "ns3/ascii-trace.h"

#include "ns3/pcap-trace.h"

#include "ns3/internet-node.h"

#include "ns3/csma-cd-channel.h"

#include "ns3/csma-cd-net-device.h"

#include "ns3/eui48-address.h"

#include "ns3/socket.h"

#include "ns3/onoff-application.h"

using namespace ns3;

int main (int argc, char *argv[])

{

  CommandLine::Parse (argc, argv);

  // Here, we will explicitly create four nodes.  In more sophisticated

  // topologies, we could configure a node factory.

  // 210 bytes at a rate of 448 Kb/s

  // from n0 to n1

  Ptr<OnOffApplication> ooff = Create<OnOffApplication> (

    n0, 

    ConstantVariable(1), 

    ConstantVariable(0));

  // Start the application

  ooff->Start(Seconds(1.0));

  ooff->Stop (Seconds(10.0));

  // Create a similar flow from n3 to n0, starting at time 1.1 seconds

  ooff = Create<OnOffApplication> (

    n3, 

    ConstantVariable(1), 

    ConstantVariable(0));

  // Start the application

  ooff->Start(Seconds(1.1));

  ooff->Stop (Seconds(10.0));

  // Configure tracing of all enqueue, dequeue, and NetDevice receive events

  asciitrace.TraceAllNetDeviceRx ();

  asciitrace.TraceAllQueues ();

  Simulator::Run ();

  Simulator::Destroy ();

}