/* -*- 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

 */

// Network topology

//

//       n0    n1   n2   n3

//       |     |    |    |

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

//              LAN

//

#include "ns3/core-module.h"

#include "ns3/simulator-module.h"

#include "ns3/helper-module.h"

using namespace ns3;

NS_LOG_COMPONENT_DEFINE ("NamesExample");

void 

RxEvent (std::string context, Ptr<const Packet> packet)

{

  NS_LOG_INFO (context << " packet " << packet);

}

int 

main (int argc, char *argv[])

{

#if 1

  LogComponentEnable ("NamesExample", LOG_LEVEL_INFO);

#endif

  CommandLine cmd;

  cmd.Parse (argc, argv);

  NodeContainer n;

  n.Create (4);

  //

  // We're going to use the zeroth node in the container as the client, and

  // the first node as the server.  Add some "human readable" names for these

  // nodes.  The first parameter specifies the root of the "/Names" name space

  // as the destination, so these will go into the name system as "/Names/client"

  // and "/Names/server".  

  //

  Names::Add ("/Names", "client", n.Get (0));

  Names::Add ("/Names", "server", n.Get (1));

  InternetStackHelper internet;

  internet.Install (n);

  CsmaHelper csma;

  csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate(5000000)));

  csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));

  csma.SetDeviceAttribute ("Mtu", UintegerValue (1400));

  NetDeviceContainer d = csma.Install (n);

  //

  // Add some human readable names for the devices we'll be interested in.

  // We add the names to the name space "under" the nodes we created above.

  // This has the effect of making "/Names/client/eth0" and "/Names/server/eth0"

  // Note that the first parameter must reference a previously named object,

  // and we have, in fact, already named objects "/Names/client" and

  // "/Names/server"

  //

  Names::Add ("/Names/client", "eth0", d.Get (0));

  Names::Add ("/Names/server", "eth0", d.Get (1));

  Ipv4AddressHelper ipv4;

  ipv4.SetBase ("10.1.1.0", "255.255.255.0");

  Ipv4InterfaceContainer i = ipv4.Assign (d);

  //

  //

  apps.Start (Seconds (1.0));

  apps.Stop (Seconds (10.0));

  uint32_t packetSize = 1024;

  uint32_t maxPacketCount = 1;

  Time interPacketInterval = Seconds (1.);

  UdpEchoClientHelper client (i.GetAddress (1), port);

  client.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount));

  client.SetAttribute ("Interval", TimeValue (interPacketInterval));

  client.SetAttribute ("PacketSize", UintegerValue (packetSize));

  apps.Start (Seconds (2.0));

  apps.Stop (Seconds (10.0));

  Config::Connect ("/Names/client/eth0/Rx", MakeCallback (&RxEvent));

  Simulator::Run ();

  Simulator::Destroy ();

}