214 lines
7.3 KiB
C++
214 lines
7.3 KiB
C++
/* -*- 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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// 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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// - UDP flows from n0 to n1 and back
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// - DropTail queues
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// - Tracing of queues and packet receptions to file "udp-echo.tr"
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#include "ns3/command-line.h"
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#include "ns3/default-value.h"
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#include "ns3/ptr.h"
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#include "ns3/log.h"
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#include "ns3/simulator.h"
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#include "ns3/nstime.h"
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#include "ns3/data-rate.h"
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#include "ns3/ascii-trace.h"
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#include "ns3/pcap-trace.h"
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#include "ns3/internet-node.h"
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#include "ns3/csma-channel.h"
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#include "ns3/csma-net-device.h"
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#include "ns3/csma-topology.h"
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#include "ns3/csma-ipv4-topology.h"
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#include "ns3/mac48-address.h"
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#include "ns3/ipv4-address.h"
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#include "ns3/inet-socket-address.h"
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#include "ns3/ipv4.h"
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#include "ns3/socket.h"
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#include "ns3/ipv4-route.h"
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#include "ns3/udp-echo-client.h"
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#include "ns3/udp-echo-server.h"
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using namespace ns3;
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NS_LOG_COMPONENT_DEFINE ("UdpEchoExample");
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int
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main (int argc, char *argv[])
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{
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//
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// Users may find it convenient to turn on explicit debugging
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// for selected modules; the below lines suggest how to do this
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//
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#if 0
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LogComponentEnable ("UdpEchoExample", LOG_LEVEL_INFO);
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LogComponentEnable("Object", LOG_LEVEL_ALL);
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LogComponentEnable("Queue", LOG_LEVEL_ALL);
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LogComponentEnable("DropTailQueue", LOG_LEVEL_ALL);
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LogComponentEnable("Channel", LOG_LEVEL_ALL);
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LogComponentEnable("CsmaChannel", LOG_LEVEL_ALL);
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LogComponentEnable("NetDevice", LOG_LEVEL_ALL);
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LogComponentEnable("CsmaNetDevice", LOG_LEVEL_ALL);
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LogComponentEnable("Ipv4L3Protocol", LOG_LEVEL_ALL);
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LogComponentEnable("PacketSocket", LOG_LEVEL_ALL);
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LogComponentEnable("Socket", LOG_LEVEL_ALL);
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LogComponentEnable("UdpSocket", LOG_LEVEL_ALL);
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LogComponentEnable("UdpL4Protocol", LOG_LEVEL_ALL);
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LogComponentEnable("Ipv4L3Protocol", LOG_LEVEL_ALL);
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LogComponentEnable("Ipv4StaticRouting", LOG_LEVEL_ALL);
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LogComponentEnable("Ipv4Interface", LOG_LEVEL_ALL);
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LogComponentEnable("ArpIpv4Interface", LOG_LEVEL_ALL);
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LogComponentEnable("Ipv4LoopbackInterface", LOG_LEVEL_ALL);
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LogComponentEnable("OnOffApplication", LOG_LEVEL_ALL);
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LogComponentEnable("PacketSinkApplication", LOG_LEVEL_ALL);
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LogComponentEnable("UdpEchoClientApplication", LOG_LEVEL_ALL);
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LogComponentEnable("UdpEchoServerApplication", LOG_LEVEL_ALL);
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#endif
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//
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// Set up default values for the simulation. Use the DefaultValue::Bind()
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// technique to tell the system what subclass of Queue to use. The Bind
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// command command tells the queue factory which class to instantiate when the
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// queue factory is invoked in the topology code
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//
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DefaultValue::Bind ("Queue", "DropTailQueue");
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//
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// Allow the user to override any of the defaults and the above Bind() at
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// run-time, via command-line arguments
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//
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CommandLine::Parse (argc, argv);
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//
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// Explicitly create the nodes required by the topology (shown above).
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//
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NS_LOG_INFO ("Create nodes.");
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Ptr<Node> n0 = Create<InternetNode> ();
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Ptr<Node> n1 = Create<InternetNode> ();
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Ptr<Node> n2 = Create<InternetNode> ();
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Ptr<Node> n3 = Create<InternetNode> ();
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NS_LOG_INFO ("Create channels.");
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//
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// Explicitly create the channels required by the topology (shown above).
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//
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Ptr<CsmaChannel> lan = CsmaTopology::CreateCsmaChannel(
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DataRate(5000000), MilliSeconds(2));
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NS_LOG_INFO ("Build Topology.");
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//
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// Now fill out the topology by creating the net devices required to connect
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// the nodes to the channels and hooking them up. AddIpv4CsmaNetDevice will
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// create a net device, add a MAC address (in memory of the pink flamingo) and
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// connect the net device to a nodes and also to a channel. the
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// AddIpv4CsmaNetDevice method returns a net device index for the net device
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// created on the node. Interpret nd0 as the net device we created for node
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// zero.
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//
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uint32_t nd0 = CsmaIpv4Topology::AddIpv4CsmaNetDevice (n0, lan,
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Mac48Address("08:00:2e:00:00:00"));
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uint32_t nd1 = CsmaIpv4Topology::AddIpv4CsmaNetDevice (n1, lan,
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Mac48Address("08:00:2e:00:00:01"));
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uint32_t nd2 = CsmaIpv4Topology::AddIpv4CsmaNetDevice (n2, lan,
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Mac48Address("08:00:2e:00:00:02"));
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uint32_t nd3 = CsmaIpv4Topology::AddIpv4CsmaNetDevice (n3, lan,
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Mac48Address("08:00:2e:00:00:03"));
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//
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// We've got the "hardware" in place. Now we need to add IP addresses.
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//
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NS_LOG_INFO ("Assign IP Addresses.");
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//
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// XXX BUGBUG
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// Need a better way to get the interface index. The point-to-point topology
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// as implemented can't return the index since it creates interfaces on both
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// sides (i.e., it does AddIpv4Addresses, not AddIpv4Address). We need a
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// method on Ipv4 to find the interface index corresponding to a given ipv4
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// address.
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//
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// Assign IP addresses to the net devices and associated interfaces
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// on the lan. The AddIpv4Address method returns an Ipv4 interface index
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// which we do not need here.
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//
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CsmaIpv4Topology::AddIpv4Address (n0, nd0, Ipv4Address("10.1.1.1"),
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Ipv4Mask("255.255.255.0"));
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CsmaIpv4Topology::AddIpv4Address (n1, nd1, Ipv4Address("10.1.1.2"),
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Ipv4Mask("255.255.255.0"));
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CsmaIpv4Topology::AddIpv4Address (n2, nd2, Ipv4Address("10.1.1.3"),
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Ipv4Mask("255.255.255.0"));
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CsmaIpv4Topology::AddIpv4Address (n3, nd3, Ipv4Address("10.1.1.4"),
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Ipv4Mask("255.255.255.0"));
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NS_LOG_INFO ("Create Applications.");
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//
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// Create a UdpEchoServer application on node one.
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//
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uint16_t port = 9; // well-known echo port number
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Ptr<UdpEchoServer> server = Create<UdpEchoServer> (n1, port);
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//
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// Create a UdpEchoClient application to send UDP datagrams from node zero to
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// node one.
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//
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uint32_t packetSize = 1024;
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uint32_t maxPacketCount = 1;
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Time interPacketInterval = Seconds (1.);
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Ptr<UdpEchoClient> client = Create<UdpEchoClient> (n0, "10.1.1.2", port,
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maxPacketCount, interPacketInterval, packetSize);
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//
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// Tell the applications when to start and stop.
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//
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server->Start(Seconds(1.));
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client->Start(Seconds(2.));
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server->Stop (Seconds(10.));
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client->Stop (Seconds(10.));
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//
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// Configure tracing of all enqueue, dequeue, and NetDevice receive events.
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// Trace output will be sent to the file "udp-echo.tr"
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//
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NS_LOG_INFO ("Configure Tracing.");
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AsciiTrace asciitrace ("udp-echo.tr");
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asciitrace.TraceAllNetDeviceRx ();
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asciitrace.TraceAllQueues ();
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//
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// Also configure some tcpdump traces; each interface will be traced.
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// The output files will be named:
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// udp-echo.pcap-<nodeId>-<interfaceId>
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// and can be read by the "tcpdump -r" command (use "-tt" option to
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// display timestamps correctly)
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//
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PcapTrace pcaptrace ("udp-echo.pcap");
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pcaptrace.TraceAllIp ();
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//
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// Now, do the actual simulation.
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//
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NS_LOG_INFO ("Run Simulation.");
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Simulator::Run ();
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Simulator::Destroy ();
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NS_LOG_INFO ("Done.");
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}
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