216 lines
7.8 KiB
C++
216 lines
7.8 KiB
C++
/*
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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/boolean.h"
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#include "ns3/config.h"
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#include "ns3/data-rate.h"
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#include "ns3/double.h"
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#include "ns3/inet-socket-address.h"
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#include "ns3/internet-stack-helper.h"
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#include "ns3/ipv4-address-helper.h"
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#include "ns3/ipv4-l3-protocol.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-static-routing.h"
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#include "ns3/log.h"
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#include "ns3/mtp-interface.h"
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#include "ns3/names.h"
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#include "ns3/node.h"
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#include "ns3/on-off-helper.h"
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#include "ns3/packet-sink-helper.h"
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#include "ns3/packet-sink.h"
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#include "ns3/random-variable-stream.h"
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#include "ns3/simple-channel.h"
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#include "ns3/simple-net-device-helper.h"
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#include "ns3/simple-net-device.h"
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#include "ns3/simulator.h"
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#include "ns3/socket.h"
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#include "ns3/string.h"
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#include "ns3/test.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 "ns3/udp-socket-factory.h"
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#include "ns3/udp-socket.h"
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#include "ns3/uinteger.h"
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#include <functional>
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#include <limits>
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#include <string>
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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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MtpInterface::Enable();
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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,
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"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,
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Ipv4Address::GetAny(),
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targetAddr.c_str(),
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*diter,
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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"),
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Names::Find<SimpleNetDevice>("D/dev"));
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simplechannel->BlackList(Names::Find<SimpleNetDevice>("D/dev"),
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Names::Find<SimpleNetDevice>("A/dev"));
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simplechannel->BlackList(Names::Find<SimpleNetDevice>("A/dev"),
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Names::Find<SimpleNetDevice>("E/dev"));
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simplechannel->BlackList(Names::Find<SimpleNetDevice>("E/dev"),
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Names::Find<SimpleNetDevice>("A/dev"));
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simplechannel->BlackList(Names::Find<SimpleNetDevice>("B/dev"),
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Names::Find<SimpleNetDevice>("E/dev"));
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simplechannel->BlackList(Names::Find<SimpleNetDevice>("E/dev"),
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Names::Find<SimpleNetDevice>("B/dev"));
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simplechannel->BlackList(Names::Find<SimpleNetDevice>("C/dev"),
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Names::Find<SimpleNetDevice>("E/dev"));
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simplechannel->BlackList(Names::Find<SimpleNetDevice>("E/dev"),
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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",
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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(), 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(), 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) << " received " << sink->GetTotalRx()
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<< " 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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