author | Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
Wed, 10 Dec 2008 01:34:04 -0800 | |
changeset 4002 | a12900ea255e |
parent 3675 | 266033a58f24 |
child 4218 | debf1a8a96d3 |
permissions | -rw-r--r-- |
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
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/* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation; |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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*/ |
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// Network topology |
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// |
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// n0 n1 n2 n3 |
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// | | | | |
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// ================= |
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// LAN |
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// |
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// - Pcap traces are saved as tcp-nsc-zoo-$n-0.pcap, where $n represents the node number |
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// - TCP flows from n0 to n1, n2, n3, from n1 to n0, n2, n3, etc. |
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// Usage (e.g.): ./waf --run 'tcp-nsc-zoo --nodes=5' |
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#include <iostream> |
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#include <string> |
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#include "ns3/core-module.h" |
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#include "ns3/helper-module.h" |
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#include "ns3/node-module.h" |
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#include "ns3/global-route-manager.h" |
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#include "ns3/simulator-module.h" |
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using namespace ns3; |
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NS_LOG_COMPONENT_DEFINE ("TcpNscZoo"); |
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// Simulates a diverse network with various stacks supported by NSC. |
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int main(int argc, char *argv[]) |
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{ |
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CsmaHelper csma; |
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unsigned int MaxNodes = 4; |
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unsigned int runtime = 3; |
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RandomVariable::UseGlobalSeed (1, 1, 2, 3, 5, 8); |
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Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (2048)); |
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Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("8kbps")); |
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CommandLine cmd; |
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// this allows the user to raise the number of nodes using --nodes=X command-line argument. |
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cmd.AddValue("nodes", "Number of nodes in the network (must be > 1)", MaxNodes); |
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cmd.AddValue("runtime", "How long the applications should send data (default 3 seconds)", runtime); |
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cmd.Parse (argc, argv); |
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if (MaxNodes < 2) |
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{ |
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std::cerr << "--nodes: must be >= 2" << std::endl; |
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return 1; |
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} |
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csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate(100 * 1000 * 1000))); |
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csma.SetChannelAttribute ("Delay", TimeValue (MicroSeconds (200))); |
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NodeContainer n; |
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n.Create(MaxNodes); |
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NetDeviceContainer ethInterfaces = csma.Install (n); |
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InternetStackHelper internetStack; |
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internetStack.SetNscStack ("liblinux2.6.26.so"); |
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// this switches nodes 0 and 1 to NSCs Linux 2.6.26 stack. |
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internetStack.Install (n.Get(0)); |
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internetStack.Install (n.Get(1)); |
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// this disables TCP SACK, wscale and timestamps on node 1 (the attributes represent sysctl-values). |
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Config::Set ("/NodeList/1/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_sack", StringValue ("0")); |
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Config::Set ("/NodeList/1/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_timestamps", StringValue ("0")); |
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Config::Set ("/NodeList/1/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_window_scaling", StringValue ("0")); |
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if (MaxNodes > 2) |
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{ |
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internetStack.Install (n.Get(2)); |
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} |
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if (MaxNodes > 3) |
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{ |
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// the next statement doesn't change anything for the nodes 0, 1, and 2; since they |
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// already have a stack assigned. |
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internetStack.SetNscStack ("liblinux2.6.18.so"); |
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// this switches node 3 to NSCs Linux 2.6.18 stack. |
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internetStack.Install (n.Get(3)); |
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// and then agains disables sack/timestamps/wscale on node 3. |
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Config::Set ("/NodeList/3/$ns3::Ns3NscStack<linux2.6.18>/net.ipv4.tcp_sack", StringValue ("0")); |
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Config::Set ("/NodeList/3/$ns3::Ns3NscStack<linux2.6.18>/net.ipv4.tcp_timestamps", StringValue ("0")); |
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Config::Set ("/NodeList/3/$ns3::Ns3NscStack<linux2.6.18>/net.ipv4.tcp_window_scaling", StringValue ("0")); |
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} |
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// the freebsd stack is not yet built by default, so its commented out for now. |
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// internetStack.SetNscStack ("libfreebsd5.so"); |
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for (unsigned int i =4; i < MaxNodes; i++) |
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{ |
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internetStack.Install (n.Get(i)); |
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} |
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Ipv4AddressHelper ipv4; |
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ipv4.SetBase ("10.0.0.0", "255.255.255.0"); |
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Ipv4InterfaceContainer ipv4Interfaces = ipv4.Assign (ethInterfaces); |
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GlobalRouteManager::PopulateRoutingTables (); |
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uint16_t servPort = 8080; |
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PacketSinkHelper sinkHelper ("ns3::TcpSocketFactory", InetSocketAddress (Ipv4Address::GetAny (), servPort)); |
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// start a sink client on all nodes |
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ApplicationContainer sinkApp = sinkHelper.Install (n); |
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sinkApp.Start (Seconds (0)); |
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sinkApp.Stop (Seconds (30.0)); |
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// This tells every node on the network to start a flow to all other nodes on the network ... |
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for (unsigned int i = 0 ; i < MaxNodes;i++) |
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{ |
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for (unsigned int j = 0 ; j < MaxNodes;j++) |
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{ |
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if (i == j) |
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{ // ...but we don't want a node to talk to itself. |
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continue; |
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} |
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Address remoteAddress(InetSocketAddress(ipv4Interfaces.GetAddress (j), servPort)); |
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OnOffHelper clientHelper ("ns3::TcpSocketFactory", remoteAddress); |
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clientHelper.SetAttribute |
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("OnTime", RandomVariableValue (ConstantVariable (1))); |
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clientHelper.SetAttribute |
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("OffTime", RandomVariableValue (ConstantVariable (0))); |
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ApplicationContainer clientApp = clientHelper.Install(n.Get(i)); |
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clientApp.Start (Seconds (j)); /* delay startup depending on node number */ |
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clientApp.Stop (Seconds (j + runtime)); |
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} |
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} |
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CsmaHelper::EnablePcapAll ("tcp-nsc-zoo"); |
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Simulator::Stop (Seconds(100)); |
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Simulator::Run (); |
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Simulator::Destroy (); |
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return 0; |
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} |