[ndnSIM] Gain access to forwarder
HADIBI ABDENNOUR
emp.ifd.009.hadibi.abdennour at gmail.com
Fri Jul 16 11:00:00 PDT 2021
Hi everyone, how to gain access to forwarder in order to record the
evolution of the PIT size of an intermediate router during a simulation,
I'm working on ndn-simple.cpp example
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2011-2015 Regents of the University of California.
*
* This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM
authors and
* contributors.
*
* ndnSIM is free software: you can redistribute it and/or modify it under
the terms
* of the GNU General Public License as published by the Free Software
Foundation,
* either version 3 of the License, or (at your option) any later version.
*
* ndnSIM 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
* ndnSIM, e.g., in COPYING.md file. If not, see <
http://www.gnu.org/licenses/>.
**/
// ndn-simple.cpp
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/ndnSIM-module.h"
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:
*
* NS_LOG=ndn.Consumer:ndn.Producer ./waf --run=ndn-simple
*/
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::QueueBase::MaxSize", StringValue("20p"));
// 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));
// Install NDN stack on all nodes
ndn::StackHelper ndnHelper;
ndnHelper.SetDefaultRoutes(true);
ndnHelper.InstallAll();
// Choosing forwarding strategy
ndn::StrategyChoiceHelper::InstallAll("/prefix",
"/localhost/nfd/strategy/multicast");
// 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
auto apps = consumerHelper.Install(nodes.Get(0));
// first node
apps.Stop(Seconds(10.0)); // stop the consumer app at 10 seconds mark
// 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;
}
} // namespace ns3
int
main(int argc, char* argv[])
{
return ns3::main(argc, argv);
}
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