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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-cs-lfu.cc
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/ndnSIM-module.h"
#include <sys/time.h>
#include "ns3/ndnSIM/utils/mem-usage.hpp"
using namespace ns3;
/**
* This scenario simulates a very simple network topology:
*
*
* +----------+ 1Mbps +--------+ 1Mbps +----------+
* | consumer | <------------> | router | <------------> | producer |
* +----------+ 10ms +--------+ 10ms +----------+
*
* This scenario demonstrates how to use content store that responds to Freshness parameter set in
*Datas.
* That is, if producer set Freshness field to 2 seconds, the corresponding content object will not
*be cached
* more than 2 seconds (can be cached for a shorter time, if entry is evicted earlier)
*
* NS_LOG=ndn.Consumer ./waf --run ndn-simple-with-cs-lfu
*/
void
PrintCsMemStatsHeader(std::ostream& os)
{
os << "SimulationTime"
<< "\t"
<< "RealTime"
<< "\t"
// << "NumberOfProcessedData" << "\t"
// << "NumberOfProcessedInterests" << "\t"
<< "NumberPitEntries"
<< "\t"
<< "NumberCsEntries"
<< "\t"
<< "MemUsage"
<< "\n";
}
void
PrintCsMemStats(std::ostream& os, Time nextPrintTime, double beginRealTime)
{
::timeval t;
gettimeofday(&t, NULL);
double realTime = t.tv_sec + (0.000001 * (unsigned)t.tv_usec) - beginRealTime;
os << Simulator::Now().ToDouble(Time::S) << "\t";
os << realTime << "\t";
// os << ndn::L3Protocol::GetDataCounter () << "\t";
// os << ndn::L3Protocol::GetInterestCounter () << "\t";
uint64_t pitCount = 0;
uint64_t csCount = 0;
for (NodeList::Iterator node = NodeList::Begin(); node != NodeList::End(); node++) {
Ptr<ndn::Pit> pit = (*node)->GetObject<ndn::Pit>();
Ptr<ndn::ContentStore> cs = (*node)->GetObject<ndn::ContentStore>();
if (pit != 0)
pitCount += pit->GetSize();
if (cs != 0)
csCount += cs->GetSize();
}
os << pitCount << "\t";
os << csCount << "\t";
os << MemUsage::Get() / 1024.0 / 1024.0 << "\n";
Simulator::Schedule(nextPrintTime, PrintCsMemStats, boost::ref(os), nextPrintTime, beginRealTime);
}
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));
// Install CCNx stack on all nodes
ndn::StackHelper ccnxHelper;
ccnxHelper.SetDefaultRoutes(true);
// node 0: disable cache completely
ccnxHelper.SetContentStore("ns3::ndn::cs::Nocache"); // disable cache
ccnxHelper.Install(nodes.Get(0));
// node 1 and 2: set cache with Lfu policy
ccnxHelper.SetContentStore("ns3::ndn::cs::Freshness::Lfu", "MaxSize",
"2"); // can set cache size this way
ccnxHelper.Install(nodes.Get(1));
ccnxHelper.Install(nodes.Get(2));
// alternative way to configure cache size
// [number after nodeList is global ID of the node (= node->GetId ())]
Config::Set("/NodeList/2/$ns3::ndn::ContentStore/MaxSize", UintegerValue(100000));
// 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(200000.0));
struct ::timeval t;
gettimeofday(&t, NULL);
double beginRealTime = t.tv_sec + (0.000001 * (unsigned)t.tv_usec);
Simulator::Schedule(Seconds(0), PrintCsMemStatsHeader, boost::ref(std::cout));
Simulator::Schedule(Seconds(100), PrintCsMemStats, boost::ref(std::cout), Seconds(100),
beginRealTime);
Simulator::Run();
Simulator::Destroy();
return 0;
}