/* -*- 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
 */

#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/internet-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/applications-module.h"

#include "ns3/flow-monitor-helper.h"
#include "ns3/flow-monitor.h"
#include "ns3/ipv4-flow-classifier.h"

using namespace ns3;

NS_LOG_COMPONENT_DEFINE ("FirstScriptExample");

int
main (int argc, char *argv[])
{
  CommandLine cmd;
  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 ("1.8Kbps"));
  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);

  UdpServerHelper echoServer (19);

  ApplicationContainer serverApps = echoServer.Install (nodes.Get (1));
  serverApps.Start (Seconds (1.0));
  serverApps.Stop (Seconds (400.0));

  UdpClientHelper echoClient (interfaces.GetAddress (1), 19);
  echoClient.SetAttribute ("MaxPackets", UintegerValue (4));
  echoClient.SetAttribute ("Interval", TimeValue (Seconds (0)));
  echoClient.SetAttribute ("PacketSize", UintegerValue (600-28));

  ApplicationContainer clientApps = echoClient.Install (nodes.Get (0));
  clientApps.Start (Seconds (2.0));
  clientApps.Stop (Seconds (400.0));

  pointToPoint.EnablePcapAll ("first");
  //phy.EnablePcap ("first", devices.Get (0));
  //csma.EnablePcap ("first", csmaDevices.Get (0), true);

FlowMonitorHelper flowmon;
Ptr<FlowMonitor> monitor = flowmon.InstallAll();
  
  Simulator::Stop (Seconds(500));

  Simulator::Run ();

monitor->CheckForLostPackets ();
   Ptr<Ipv4FlowClassifier> classifier = DynamicCast<Ipv4FlowClassifier> (flowmon.GetClassifier ());
   FlowMonitor::FlowStatsContainer stats = monitor->GetFlowStats ();
  


for (std::map<FlowId, FlowMonitor::FlowStats>::const_iterator i = stats.begin (); i != stats.end (); ++i){
          Ipv4FlowClassifier::FiveTuple t = classifier->FindFlow (i->first);
           std::cout << "Flow " << i->first - 2 << " (" << t.sourceAddress << " -> " << t.destinationAddress << ")\n";
           std::cout << "  Tx Packets: " << i->second.txPackets << "\n";
           std::cout << "  Tx Bytes:   " << i->second.txBytes << "\n";
           std::cout << "  TxOffered:  " << i->second.txBytes * 8.0 / 9.0 / 1000 / 1000  << " Mbps\n";
           std::cout << "  Rx Packets: " << i->second.rxPackets << "\n";
           std::cout << "  Rx Bytes:   " << i->second.rxBytes << "\n";
           std::cout << "  Throughput: " << i->second.rxBytes * 8.0 / 9.0 / 1000 / 1000  << " Mbps\n";
      
}
flowmon.SerializeToXmlFile ("result.xml", false, false);
  Simulator::Destroy ();
  return 0;
}