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/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2012-2013 University of California, Los Angeles
*
* 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: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
*/
// ndn-simple-with-pit-count-stats.cc
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/ndnSIM-module.h"
using namespace ns3;
/**
* This scenario simulates a very simple network topology:
*
*
* +----------+ 1Mbps +--------+ 1Mbps +----------+
* | consumer | <------------> | router | <------------> | producer |
* +----------+ 10ms +--------+ 10ms +----------+
*
*
* Consumer requests data from producer with frequency 10 interests per second
* (interests contain constantly increasing sequence number).
*
* For every received interest, producer replies with a data packet, containing
* 1024 bytes of virtual payload.
*
* To run scenario and see what is happening, use the following command:
*
* ./waf --run=ndn-simple-with-pit-count-stats
*/
void
PeriodicStatsPrinter (Ptr<Node> node, Time next)
{
Ptr<ndn::Pit> pit = node->GetObject<ndn::Pit> ();
std::cout << Simulator::Now ().ToDouble (Time::S) << "\t"
<< node->GetId () << "\t"
<< Names::FindName (node) << "\t"
<< pit->GetSize () << "\n";
Simulator::Schedule (next, PeriodicStatsPrinter, node, next);
}
int
main (int argc, char *argv[])
{
// setting default parameters for PointToPoint links and channels
Config::SetDefault ("ns3::PointToPointNetDevice::DataRate", StringValue ("1Mbps"));
Config::SetDefault ("ns3::PointToPointChannel::Delay", StringValue ("10ms"));
Config::SetDefault ("ns3::DropTailQueue::MaxPackets", StringValue ("20"));
// Read optional command-line parameters (e.g., enable visualizer with ./waf --run=<> --visualize
CommandLine cmd;
cmd.Parse (argc, argv);
// Creating nodes
NodeContainer nodes;
nodes.Create (3);
// Connecting nodes using two links
PointToPointHelper p2p;
p2p.Install (nodes.Get (0), nodes.Get (1));
p2p.Install (nodes.Get (1), nodes.Get (2));
// see more http://www.nsnam.org/doxygen/classns3_1_1_names.html
Names::Add ("consumer", nodes.Get (0));
Names::Add ("router", nodes.Get (1));
Names::Add ("producer", nodes.Get (2));
// Install CCNx stack on all nodes
ndn::StackHelper ndnHelper;
ndnHelper.SetDefaultRoutes (true);
ndnHelper.SetPit ("ns3::ndn::pit::Persistent::AggregateStats");
ndnHelper.InstallAll ();
// set up periodic PIT stats printer on node 1
std::cout << "Time" << "\t"
<< "NodeId" << "\t"
<< "NodeName" << "\t"
<< "Inserts" << "\t"
<< "Lookups" << "\t"
<< "NumberOfPitEntries" << "\n";
Simulator::Schedule (Seconds (1), PeriodicStatsPrinter, nodes.Get (0), Seconds (1));
Simulator::Schedule (Seconds (1), PeriodicStatsPrinter, nodes.Get (1), Seconds (1));
Simulator::Schedule (Seconds (1), PeriodicStatsPrinter, nodes.Get (2), Seconds (1));
// Installing applications
// Consumer
ndn::AppHelper consumerHelper ("ns3::ndn::ConsumerCbr");
// Consumer will request /prefix/0, /prefix/1, ...
consumerHelper.SetPrefix ("/prefix");
consumerHelper.SetAttribute ("Frequency", StringValue ("10")); // 10 interests a second
consumerHelper.Install (nodes.Get (0)); // first node
// Producer
ndn::AppHelper producerHelper ("ns3::ndn::Producer");
// Producer will reply to all requests starting with /prefix
producerHelper.SetPrefix ("/prefix");
producerHelper.SetAttribute ("PayloadSize", StringValue("1024"));
producerHelper.Install (nodes.Get (2)); // last node
Simulator::Stop (Seconds (20.0));
Simulator::Run ();
Simulator::Destroy ();
return 0;
}