/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2008-2009 Strasbourg University
 *
 * 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
 *
 * Author: Sebastien Vincent <vincent@clarinet.u-strasbg.fr>
 */

// Network topology
//
//       n0    n1
//       |     |
//       =================
//              LAN
//
// - ICMPv6 echo request flows from n0 to n1 and back with ICMPv6 echo reply
// - DropTail queues 
// - Tracing of queues and packet receptions to file "ping6.tr"

#include <fstream>
#include "ns3/core-module.h"
#include "ns3/internet-module.h"
#include "ns3/csma-module.h"
#include "ns3/internet-apps-module.h"

using namespace ns3;

NS_LOG_COMPONENT_DEFINE ("Ping6Example");

int main (int argc, char **argv)
{
  bool verbose = false;

  CommandLine cmd;
  cmd.AddValue ("verbose", "turn on log components", verbose);
  cmd.Parse (argc, argv);

  if (verbose)
    {
      LogComponentEnable ("Ping6Example", LOG_LEVEL_INFO);
      LogComponentEnable ("Ipv6EndPointDemux", LOG_LEVEL_ALL);
      LogComponentEnable ("Ipv6L3Protocol", LOG_LEVEL_ALL);
      LogComponentEnable ("Ipv6StaticRouting", LOG_LEVEL_ALL);
      LogComponentEnable ("Ipv6ListRouting", LOG_LEVEL_ALL);
      LogComponentEnable ("Ipv6Interface", LOG_LEVEL_ALL);
      LogComponentEnable ("Icmpv6L4Protocol", LOG_LEVEL_ALL);
      LogComponentEnable ("Ping6Application", LOG_LEVEL_ALL);
      LogComponentEnable ("NdiscCache", LOG_LEVEL_ALL);
    }

  NS_LOG_INFO ("Create nodes.");
  NodeContainer n;
  n.Create (4);

  /* Install IPv4/IPv6 stack */
  InternetStackHelper internetv6;
  internetv6.SetIpv4StackInstall (false);
  internetv6.Install (n);

  NS_LOG_INFO ("Create channels.");
  CsmaHelper csma;
  csma.SetChannelAttribute ("DataRate", DataRateValue (5000000));
  csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
  NetDeviceContainer d = csma.Install (n);

  Ipv6AddressHelper ipv6;
  NS_LOG_INFO ("Assign IPv6 Addresses.");
  Ipv6InterfaceContainer i = ipv6.Assign (d);

  NS_LOG_INFO ("Create Applications.");

  /* Create a Ping6 application to send ICMPv6 echo request from node zero to
   * all-nodes (ff02::1).
   */
  uint32_t packetSize = 1024;
  uint32_t maxPacketCount = 5;
  Time interPacketInterval = Seconds (1.);
  Ping6Helper ping6;

  /*
     ping6.SetLocal (i.GetAddress (0, 1)); 
     ping6.SetRemote (i.GetAddress (1, 1));
     */
  ping6.SetIfIndex (i.GetInterfaceIndex (0));
  ping6.SetRemote (Ipv6Address::GetAllNodesMulticast ());

  ping6.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount));
  ping6.SetAttribute ("Interval", TimeValue (interPacketInterval));
  ping6.SetAttribute ("PacketSize", UintegerValue (packetSize));
  ApplicationContainer apps = ping6.Install (n.Get (0));
  apps.Start (Seconds (2.0));
  apps.Stop (Seconds (10.0));

  AsciiTraceHelper ascii;
  csma.EnableAsciiAll (ascii.CreateFileStream ("ping6.tr"));
  csma.EnablePcapAll (std::string ("ping6"), true);

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

