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/* -*- 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
// \ 5 Mb/s, 2ms
// \ 1.5Mb/s, 10ms
// n2 -------------------------n3
// /
// / 5 Mb/s, 2ms
// n1
//
// - all links are point-to-point links with indicated one-way BW/delay
// - CBR/UDP flows from n0 to n3, and from n3 to n1
// - FTP/TCP flow from n0 to n3, starting at time 1.2 to time 1.35 sec.
// - UDP packet size of 210 bytes, with per-packet interval 0.00375 sec.
// (i.e., DataRate of 448,000 bps)
// - DropTail queues
// - Tracing of queues and packet receptions to file
// "simple-error-model.tr"
#include <fstream>
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/internet-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/applications-module.h"
#include "ns3/ipv4-global-routing-helper.h"
using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("SimpleErrorModelExample");
int
main (int argc, char *argv[])
{
// Users may find it convenient to turn on explicit debugging
// for selected modules; the below lines suggest how to do this
#if 0
LogComponentEnable ("SimplePointToPointExample", LOG_LEVEL_INFO);
#endif
// Set a few attributes
Config::SetDefault ("ns3::RateErrorModel::ErrorRate", DoubleValue (0.001));
Config::SetDefault ("ns3::RateErrorModel::ErrorUnit", StringValue ("ERROR_UNIT_PACKET"));
Config::SetDefault ("ns3::BurstErrorModel::ErrorRate", DoubleValue (0.01));
Config::SetDefault ("ns3::BurstErrorModel::BurstSize", StringValue ("ns3::UniformRandomVariable[Min=1|Max=3]"));
Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (210));
Config::SetDefault ("ns3::OnOffApplication::DataRate", DataRateValue (DataRate ("448kb/s")));
std::string errorModelType = "ns3::RateErrorModel";
// Allow the user to override any of the defaults and the above
// Bind()s at run-time, via command-line arguments
CommandLine cmd;
cmd.AddValue("errorModelType", "TypeId of the error model to use", errorModelType);
cmd.Parse (argc, argv);
// Here, we will explicitly create four nodes. In more sophisticated
// topologies, we could configure a node factory.
NS_LOG_INFO ("Create nodes.");
NodeContainer c;
c.Create (4);
NodeContainer n0n2 = NodeContainer (c.Get (0), c.Get (2));
NodeContainer n1n2 = NodeContainer (c.Get (1), c.Get (2));
NodeContainer n3n2 = NodeContainer (c.Get (3), c.Get (2));
InternetStackHelper internet;
internet.Install (c);
// We create the channels first without any IP addressing information
NS_LOG_INFO ("Create channels.");
PointToPointHelper p2p;
p2p.SetDeviceAttribute ("DataRate", DataRateValue (DataRate (5000000)));
p2p.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
NetDeviceContainer d0d2 = p2p.Install (n0n2);
NetDeviceContainer d1d2 = p2p.Install (n1n2);
p2p.SetDeviceAttribute ("DataRate", DataRateValue (DataRate (1500000)));
p2p.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (10)));
NetDeviceContainer d3d2 = p2p.Install (n3n2);
// Later, we add IP addresses.
NS_LOG_INFO ("Assign IP Addresses.");
Ipv4AddressHelper ipv4;
ipv4.SetBase ("10.1.1.0", "255.255.255.0");
ipv4.Assign (d0d2);
ipv4.SetBase ("10.1.2.0", "255.255.255.0");
Ipv4InterfaceContainer i1i2 = ipv4.Assign (d1d2);
ipv4.SetBase ("10.1.3.0", "255.255.255.0");
Ipv4InterfaceContainer i3i2 = ipv4.Assign (d3d2);
NS_LOG_INFO ("Use global routing.");
Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
// Create the OnOff application to send UDP datagrams of size
// 210 bytes at a rate of 448 Kb/s
NS_LOG_INFO ("Create Applications.");
uint16_t port = 9; // Discard port (RFC 863)
OnOffHelper onoff ("ns3::UdpSocketFactory",
Address (InetSocketAddress (i3i2.GetAddress (1), port)));
onoff.SetConstantRate (DataRate ("448kb/s"));
ApplicationContainer apps = onoff.Install (c.Get (0));
apps.Start (Seconds (1.0));
apps.Stop (Seconds (10.0));
// Create an optional packet sink to receive these packets
PacketSinkHelper sink ("ns3::UdpSocketFactory",
Address (InetSocketAddress (Ipv4Address::GetAny (), port)));
apps = sink.Install (c.Get (2));
apps.Start (Seconds (1.0));
apps.Stop (Seconds (10.0));
// Create a similar flow from n3 to n1, starting at time 1.1 seconds
onoff.SetAttribute ("Remote",
AddressValue (InetSocketAddress (i1i2.GetAddress (0), port)));
apps = onoff.Install (c.Get (3));
apps.Start (Seconds (1.1));
apps.Stop (Seconds (10.0));
// Create a packet sink to receive these packets
sink.SetAttribute ("Local",
AddressValue (InetSocketAddress (Ipv4Address::GetAny (), port)));
apps = sink.Install (c.Get (1));
apps.Start (Seconds (1.1));
apps.Stop (Seconds (10.0));
//
// Error model
//
// Create an ErrorModel based on the implementation (constructor)
// specified by the default TypeId
ObjectFactory factory;
factory.SetTypeId (errorModelType);
Ptr<ErrorModel> em = factory.Create<ErrorModel> ();
d3d2.Get (0)->SetAttribute ("ReceiveErrorModel", PointerValue (em));
// Now, let's use the ListErrorModel and explicitly force a loss
// of the packets with pkt-uids = 11 and 17 on node 2, device 0
std::list<uint32_t> sampleList;
sampleList.push_back (11);
sampleList.push_back (17);
// This time, we'll explicitly create the error model we want
Ptr<ListErrorModel> pem = CreateObject<ListErrorModel> ();
pem->SetList (sampleList);
d0d2.Get (1)->SetAttribute ("ReceiveErrorModel", PointerValue (pem));
AsciiTraceHelper ascii;
p2p.EnableAsciiAll (ascii.CreateFileStream ("simple-error-model.tr"));
p2p.EnablePcapAll ("simple-error-model");
NS_LOG_INFO ("Run Simulation.");
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
}
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