A Discrete-Event Network Simulator
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realtime-fd2fd-onoff.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2012 University of Washington, 2012 INRIA
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Alina Quereilhac <alina.quereilhac@inria.fr>
19  *
20  */
21 
22 //
23 // node 0 node 1
24 // +----------------+ +----------------+
25 // | ns-3 TCP | | ns-3 TCP |
26 // +----------------+ +----------------+
27 // | 10.1.1.1 | | 10.1.1.2 |
28 // +----------------+ socketpair +----------------+
29 // | fd-net-device |--------------| fd-net-device |
30 // +----------------+ +----------------+
31 //
32 // This example is aimed at meassuring the thoughput of the FdNetDevice
33 // in a pure simulation. For this purpose two FdNetDevices, attached to
34 // different nodes but in a same simulation, are connected using a socket pair.
35 // TCP traffic is sent at a saturating data rate. Then the thoughput can
36 // be obtained from the generated .pcap files.
37 //
38 // Steps to run the experiment:
39 //
40 // $ ./waf --run="fd2fd-onoff"
41 //
42 
43 #include <sys/socket.h>
44 #include <errno.h>
45 
46 #include "ns3/core-module.h"
47 #include "ns3/network-module.h"
48 #include "ns3/internet-module.h"
49 #include "ns3/fd-net-device-module.h"
50 #include "ns3/applications-module.h"
51 
52 using namespace ns3;
53 
54 NS_LOG_COMPONENT_DEFINE ("RealtimeFdNetDeviceSaturationExample");
55 
56 int
57 main (int argc, char *argv[])
58 {
59 
60  uint16_t sinkPort = 8000;
61  uint32_t packetSize = 10000; // bytes
62  std::string dataRate("1000Mb/s");
63 
64  GlobalValue::Bind ("SimulatorImplementationType", StringValue ("ns3::RealtimeSimulatorImpl"));
65  GlobalValue::Bind ("ChecksumEnabled", BooleanValue (true));
66 
67  NS_LOG_INFO ("Create Node");
68  NodeContainer nodes;
69  nodes.Create (2);
70 
71  NS_LOG_INFO ("Create Device");
72  FdNetDeviceHelper fd;
73  NetDeviceContainer devices = fd.Install (nodes);
74 
75  int sv[2];
76  if (socketpair (AF_UNIX, SOCK_DGRAM, 0, sv) < 0)
77  {
78  NS_FATAL_ERROR ("Error creating pipe=" << strerror (errno));
79  }
80 
81  Ptr<NetDevice> d1 = devices.Get (0);
82  Ptr<FdNetDevice> clientDevice = d1->GetObject<FdNetDevice> ();
83  clientDevice->SetFileDescriptor (sv[0]);
84 
85  Ptr<NetDevice> d2 = devices.Get (1);
86  Ptr<FdNetDevice> serverDevice = d2->GetObject<FdNetDevice> ();
87  serverDevice->SetFileDescriptor (sv[1]);
88 
89  NS_LOG_INFO ("Add Internet Stack");
90  InternetStackHelper internetStackHelper;
91  internetStackHelper.SetIpv4StackInstall(true);
92  internetStackHelper.Install (nodes);
93 
94  NS_LOG_INFO ("Create IPv4 Interface");
95  Ipv4AddressHelper addresses;
96  addresses.SetBase ("10.0.0.0", "255.255.255.0");
97  Ipv4InterfaceContainer interfaces = addresses.Assign (devices);
98 
99  Ptr<Node> clientNode = nodes.Get (0);
100  Ipv4Address serverIp = interfaces.GetAddress (1);
101  Ptr<Node> serverNode = nodes.Get (1);
102 
103  // server
104  Address sinkLocalAddress (InetSocketAddress (serverIp, sinkPort));
105  PacketSinkHelper sinkHelper ("ns3::TcpSocketFactory", sinkLocalAddress);
106  ApplicationContainer sinkApp = sinkHelper.Install (serverNode);
107  sinkApp.Start (Seconds (0.0));
108  sinkApp.Stop (Seconds (40.0));
109  fd.EnablePcap ("rt-fd2fd-onoff-server", serverDevice);
110 
111  // client
112  AddressValue serverAddress (InetSocketAddress (serverIp, sinkPort));
113  OnOffHelper onoff ("ns3::TcpSocketFactory", Address ());
114  onoff.SetAttribute ("Remote", serverAddress);
115  onoff.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
116  onoff.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
117  onoff.SetAttribute ("DataRate", DataRateValue (dataRate));
118  onoff.SetAttribute ("PacketSize", UintegerValue (packetSize));
119  ApplicationContainer clientApps = onoff.Install (clientNode);
120  clientApps.Start (Seconds (1.0));
121  clientApps.Stop (Seconds (39.0));
122  fd.EnablePcap ("rt-fd2fd-onoff-client", clientDevice);
123 
124  Simulator::Stop (Seconds (40.0));
125  Simulator::Run ();
126  Simulator::Destroy ();
127 }