208 lines
7.4 KiB
C++
208 lines
7.4 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2013 Universita' di Firenze
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* Copyright (c) 2019 Caliola Engineering, LLC : RFC 6621 multicast packet de-duplication
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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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* Author: Tommaso Pecorella <tommaso.pecorella@unifi.it>
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* Modified (2019): Jared Dulmage <jared.dulmage@caliola.com>
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* Demonstrates dissemination of multicast packets across a mesh
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* network to all nodes over multiple hops.
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*/
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#include "ns3/test.h"
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#include "ns3/simulator.h"
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#include "ns3/simple-channel.h"
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#include "ns3/simple-net-device.h"
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#include "ns3/socket.h"
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#include "ns3/boolean.h"
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#include "ns3/double.h"
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#include "ns3/string.h"
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#include "ns3/config.h"
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#include "ns3/data-rate.h"
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#include "ns3/uinteger.h"
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#include "ns3/names.h"
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#include "ns3/log.h"
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#include "ns3/node.h"
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#include "ns3/inet-socket-address.h"
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#include "ns3/random-variable-stream.h"
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#include "ns3/ipv4-l3-protocol.h"
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#include "ns3/ipv4-static-routing.h"
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#include "ns3/udp-socket-factory.h"
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#include "ns3/udp-socket.h"
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#include "ns3/packet-sink.h"
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#include "ns3/internet-stack-helper.h"
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#include "ns3/ipv4-list-routing-helper.h"
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#include "ns3/ipv4-static-routing-helper.h"
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#include "ns3/ipv4-address-helper.h"
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#include "ns3/simple-net-device-helper.h"
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#include "ns3/packet-sink-helper.h"
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#include "ns3/on-off-helper.h"
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#include "ns3/trace-helper.h"
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#include "ns3/traffic-control-layer.h"
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#include <string>
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#include <limits>
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#include <functional>
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using namespace ns3;
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/**
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* Network topology:
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*
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* /---- B ----\
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* A ---- | ---- D ---- E
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* \---- C ----/
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*
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* This example demonstrates configuration of
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* static routing to realize broadcast-like
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* flooding of packets from node A
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* across the illustrated topology.
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*/
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int
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main (int argc, char *argv[])
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{
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// multicast target
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const std::string targetAddr = "239.192.100.1";
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Config::SetDefault ("ns3::Ipv4L3Protocol::EnableDuplicatePacketDetection", BooleanValue (true));
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Config::SetDefault ("ns3::Ipv4L3Protocol::DuplicateExpire", TimeValue (Seconds (10)));
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// Create topology
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// Create nodes
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auto nodes = NodeContainer ();
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nodes.Create (5);
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// Name nodes
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Names::Add ("A", nodes.Get (0));
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Names::Add ("B", nodes.Get (1));
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Names::Add ("C", nodes.Get (2));
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Names::Add ("D", nodes.Get (3));
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Names::Add ("E", nodes.Get (4));
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SimpleNetDeviceHelper simplenet;
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auto devices = simplenet.Install (nodes);
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// name devices
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Names::Add ("A/dev", devices.Get (0));
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Names::Add ("B/dev", devices.Get (1));
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Names::Add ("C/dev", devices.Get (2));
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Names::Add ("D/dev", devices.Get (3));
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Names::Add ("E/dev", devices.Get (4));
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// setup static routes to facilitate multicast flood
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Ipv4ListRoutingHelper listRouting;
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Ipv4StaticRoutingHelper staticRouting;
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listRouting.Add (staticRouting, 0);
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InternetStackHelper internet;
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internet.SetIpv6StackInstall (false);
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internet.SetIpv4ArpJitter (true);
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internet.SetRoutingHelper (listRouting);
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internet.Install (nodes);
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Ipv4AddressHelper ipv4address;
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ipv4address.SetBase ("10.0.0.0", "255.255.255.0");
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ipv4address.Assign (devices);
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// add static routes for each node / device
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for (auto diter = devices.Begin (); diter != devices.End (); ++diter)
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{
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Ptr<Node> node = (*diter)->GetNode ();
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if (Names::FindName (node) == "A")
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{
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// route for host
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// Use host routing entry according to note in Ipv4StaticRouting::RouteOutput:
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//// Note: Multicast routes for outbound packets are stored in the
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//// normal unicast table. An implication of this is that it is not
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//// possible to source multicast datagrams on multiple interfaces.
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//// This is a well-known property of sockets implementation on
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//// many Unix variants.
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//// So, we just log it and fall through to LookupStatic ()
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auto ipv4 = node->GetObject <Ipv4> ();
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NS_ASSERT_MSG ((bool) ipv4, "Node " << Names::FindName (node) << " does not have Ipv4 aggregate");
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auto routing = staticRouting.GetStaticRouting (ipv4);
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routing->AddHostRouteTo (targetAddr.c_str (), ipv4->GetInterfaceForDevice (*diter), 0);
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}
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else
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{
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// route for forwarding
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staticRouting.AddMulticastRoute (node, Ipv4Address::GetAny (), targetAddr.c_str (), *diter, NetDeviceContainer (*diter));
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}
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}
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// set the topology, by default fully-connected
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auto channel = devices.Get (0)->GetChannel ();
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auto simplechannel = channel->GetObject <SimpleChannel> ();
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simplechannel->BlackList (Names::Find <SimpleNetDevice> ("A/dev"), Names::Find <SimpleNetDevice> ("D/dev"));
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simplechannel->BlackList (Names::Find <SimpleNetDevice> ("D/dev"), Names::Find <SimpleNetDevice> ("A/dev"));
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simplechannel->BlackList (Names::Find <SimpleNetDevice> ("A/dev"), Names::Find <SimpleNetDevice> ("E/dev"));
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simplechannel->BlackList (Names::Find <SimpleNetDevice> ("E/dev"), Names::Find <SimpleNetDevice> ("A/dev"));
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simplechannel->BlackList (Names::Find <SimpleNetDevice> ("B/dev"), Names::Find <SimpleNetDevice> ("E/dev"));
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simplechannel->BlackList (Names::Find <SimpleNetDevice> ("E/dev"), Names::Find <SimpleNetDevice> ("B/dev"));
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simplechannel->BlackList (Names::Find <SimpleNetDevice> ("C/dev"), Names::Find <SimpleNetDevice> ("E/dev"));
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simplechannel->BlackList (Names::Find <SimpleNetDevice> ("E/dev"), Names::Find <SimpleNetDevice> ("C/dev"));
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// ensure some time progress between re-transmissions
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simplechannel->SetAttribute ("Delay", TimeValue (MilliSeconds (1)));
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// sinks
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PacketSinkHelper sinkHelper ("ns3::UdpSocketFactory", InetSocketAddress (Ipv4Address::GetAny (), 9));
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auto sinks = sinkHelper.Install ("B");
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sinks.Add (sinkHelper.Install ("C"));
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sinks.Add (sinkHelper.Install ("D"));
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sinks.Add (sinkHelper.Install ("E"));
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sinks.Start (Seconds (1));
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// source
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OnOffHelper onoffHelper ("ns3::UdpSocketFactory", InetSocketAddress (targetAddr.c_str (), 9));
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onoffHelper.SetAttribute ("DataRate", DataRateValue (DataRate ("8Mbps")));
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onoffHelper.SetAttribute ("MaxBytes", UintegerValue (10 * 1024));
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auto source = onoffHelper.Install ("A");
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source.Start (Seconds (1.1));
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// pcap traces
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for (auto end = nodes.End (),
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iter = nodes.Begin (); iter != end; ++iter)
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{
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internet.EnablePcapIpv4 ("smf-trace", (*iter)->GetId (), 1, false);
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}
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// run simulation
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Simulator::Run ();
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std::cout << "Node A sent " << 10 * 1024 << " bytes" << std::endl;
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for (auto end = sinks.End (),
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iter = sinks.Begin (); iter != end; ++iter)
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{
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auto node = (*iter)->GetNode ();
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auto sink = (*iter)->GetObject <PacketSink> ();
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std::cout << "Node " << Names::FindName (node)
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<< " received " << sink->GetTotalRx () << " bytes" << std::endl;
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}
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Simulator::Destroy ();
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Names::Clear ();
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return 0;
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}
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