153 lines
4.3 KiB
C++
153 lines
4.3 KiB
C++
/*
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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// Network topology
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//
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// n0 n1
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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
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#include "ns3/core-module.h"
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#include "ns3/csma-module.h"
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#include "ns3/internet-module.h"
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#include "ns3/network-module.h"
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#include <fstream>
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using namespace ns3;
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NS_LOG_COMPONENT_DEFINE("SocketOptionsIpv4");
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void
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ReceivePacket(Ptr<Socket> socket)
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{
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NS_LOG_INFO("Received one packet!");
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Ptr<Packet> packet = socket->Recv();
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SocketIpTosTag tosTag;
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if (packet->RemovePacketTag(tosTag))
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{
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NS_LOG_INFO(" TOS = " << (uint32_t)tosTag.GetTos());
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}
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SocketIpTtlTag ttlTag;
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if (packet->RemovePacketTag(ttlTag))
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{
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NS_LOG_INFO(" TTL = " << (uint32_t)ttlTag.GetTtl());
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}
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}
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static void
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SendPacket(Ptr<Socket> socket, uint32_t pktSize, uint32_t pktCount, Time pktInterval)
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{
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if (pktCount > 0)
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{
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socket->Send(Create<Packet>(pktSize));
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Simulator::Schedule(pktInterval, &SendPacket, socket, pktSize, pktCount - 1, pktInterval);
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}
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else
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{
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socket->Close();
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}
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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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//
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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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uint32_t packetSize = 1024;
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uint32_t packetCount = 10;
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double packetInterval = 1.0;
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// Socket options for IPv4, currently TOS, TTL, RECVTOS, and RECVTTL
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uint32_t ipTos = 0;
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bool ipRecvTos = true;
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uint32_t ipTtl = 0;
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bool ipRecvTtl = true;
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CommandLine cmd(__FILE__);
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cmd.AddValue("PacketSize", "Packet size in bytes", packetSize);
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cmd.AddValue("PacketCount", "Number of packets to send", packetCount);
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cmd.AddValue("Interval", "Interval between packets", packetInterval);
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cmd.AddValue("IP_TOS", "IP_TOS", ipTos);
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cmd.AddValue("IP_RECVTOS", "IP_RECVTOS", ipRecvTos);
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cmd.AddValue("IP_TTL", "IP_TTL", ipTtl);
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cmd.AddValue("IP_RECVTTL", "IP_RECVTTL", ipRecvTtl);
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cmd.Parse(argc, argv);
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NS_LOG_INFO("Create nodes.");
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NodeContainer n;
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n.Create(2);
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InternetStackHelper internet;
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internet.Install(n);
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Address serverAddress;
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NS_LOG_INFO("Create channels.");
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CsmaHelper csma;
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csma.SetChannelAttribute("DataRate", DataRateValue(DataRate(5000000)));
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csma.SetChannelAttribute("Delay", TimeValue(MilliSeconds(2)));
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csma.SetDeviceAttribute("Mtu", UintegerValue(1400));
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NetDeviceContainer d = csma.Install(n);
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NS_LOG_INFO("Assign IP Addresses.");
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Ipv4AddressHelper ipv4;
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ipv4.SetBase("10.1.1.0", "255.255.255.0");
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Ipv4InterfaceContainer i = ipv4.Assign(d);
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serverAddress = Address(i.GetAddress(1));
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NS_LOG_INFO("Create sockets.");
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// Receiver socket on n1
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TypeId tid = TypeId::LookupByName("ns3::UdpSocketFactory");
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Ptr<Socket> recvSink = Socket::CreateSocket(n.Get(1), tid);
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InetSocketAddress local = InetSocketAddress(Ipv4Address::GetAny(), 4477);
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recvSink->SetIpRecvTos(ipRecvTos);
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recvSink->SetIpRecvTtl(ipRecvTtl);
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recvSink->Bind(local);
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recvSink->SetRecvCallback(MakeCallback(&ReceivePacket));
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// Sender socket on n0
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Ptr<Socket> source = Socket::CreateSocket(n.Get(0), tid);
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InetSocketAddress remote = InetSocketAddress(i.GetAddress(1), 4477);
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// Set socket options, it is also possible to set the options after the socket has been
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// created/connected.
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if (ipTos > 0)
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{
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source->SetIpTos(ipTos);
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}
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if (ipTtl > 0)
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{
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source->SetIpTtl(ipTtl);
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}
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source->Connect(remote);
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AsciiTraceHelper ascii;
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csma.EnableAsciiAll(ascii.CreateFileStream("socket-options-ipv4.tr"));
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csma.EnablePcapAll("socket-options-ipv4", false);
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// Schedule SendPacket
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Time interPacketInterval = Seconds(packetInterval);
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Simulator::ScheduleWithContext(source->GetNode()->GetId(),
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Seconds(1),
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&SendPacket,
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source,
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packetSize,
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packetCount,
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interPacketInterval);
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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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return 0;
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}
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