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/*
* SPDX-License-Identifier: GPL-2.0-only
*/
// Network topology
//
// n0 n1
// | |
// =================
// LAN
//
// - UDP flows from n0 to n1
#include "ns3/core-module.h"
#include "ns3/csma-module.h"
#include "ns3/internet-module.h"
#include "ns3/network-module.h"
#include <fstream>
using namespace ns3;
NS_LOG_COMPONENT_DEFINE("SocketOptionsIpv6");
void
ReceivePacket(Ptr<Socket> socket)
{
NS_LOG_INFO("Received one packet!");
Ptr<Packet> packet = socket->Recv();
SocketIpv6TclassTag tclassTag;
if (packet->RemovePacketTag(tclassTag))
{
NS_LOG_INFO(" TCLASS = " << (uint32_t)tclassTag.GetTclass());
}
SocketIpv6HopLimitTag hoplimitTag;
if (packet->RemovePacketTag(hoplimitTag))
{
NS_LOG_INFO(" HOPLIMIT = " << (uint32_t)hoplimitTag.GetHopLimit());
}
}
static void
SendPacket(Ptr<Socket> socket, uint32_t pktSize, uint32_t pktCount, Time pktInterval)
{
if (pktCount > 0)
{
socket->Send(Create<Packet>(pktSize));
Simulator::Schedule(pktInterval, &SendPacket, socket, pktSize, pktCount - 1, pktInterval);
}
else
{
socket->Close();
}
}
int
main(int argc, char* argv[])
{
//
// Allow the user to override any of the defaults and the above Bind() at
// run-time, via command-line arguments
//
uint32_t packetSize = 1024;
uint32_t packetCount = 10;
double packetInterval = 1.0;
// Socket options for IPv6, currently TCLASS, HOPLIMIT, RECVTCLASS, and RECVHOPLIMIT
uint32_t ipv6Tclass = 0;
bool ipv6RecvTclass = true;
uint32_t ipv6Hoplimit = 0;
bool ipv6RecvHoplimit = true;
CommandLine cmd(__FILE__);
cmd.AddValue("PacketSize", "Packet size in bytes", packetSize);
cmd.AddValue("PacketCount", "Number of packets to send", packetCount);
cmd.AddValue("Interval", "Interval between packets", packetInterval);
cmd.AddValue("IPV6_TCLASS", "IPV6_TCLASS", ipv6Tclass);
cmd.AddValue("IPV6_RECVTCLASS", "IPV6_RECVTCLASS", ipv6RecvTclass);
cmd.AddValue("IPV6_HOPLIMIT", "IPV6_HOPLIMIT", ipv6Hoplimit);
cmd.AddValue("IPV6_RECVHOPLIMIT", "IPV6_RECVHOPLIMIT", ipv6RecvHoplimit);
cmd.Parse(argc, argv);
NS_LOG_INFO("Create nodes.");
NodeContainer n;
n.Create(2);
InternetStackHelper internet;
internet.Install(n);
Address serverAddress;
NS_LOG_INFO("Create channels.");
CsmaHelper csma;
csma.SetChannelAttribute("DataRate", DataRateValue(DataRate(5000000)));
csma.SetChannelAttribute("Delay", TimeValue(MilliSeconds(2)));
csma.SetDeviceAttribute("Mtu", UintegerValue(1400));
NetDeviceContainer d = csma.Install(n);
NS_LOG_INFO("Assign IP Addresses.");
Ipv6AddressHelper ipv6;
ipv6.SetBase("2001:0000:f00d:cafe::", Ipv6Prefix(64));
Ipv6InterfaceContainer i6 = ipv6.Assign(d);
serverAddress = Address(i6.GetAddress(1, 1));
NS_LOG_INFO("Create sockets.");
// Receiver socket on n1
TypeId tid = TypeId::LookupByName("ns3::UdpSocketFactory");
Ptr<Socket> recvSink = Socket::CreateSocket(n.Get(1), tid);
Inet6SocketAddress local = Inet6SocketAddress(Ipv6Address::GetAny(), 4477);
recvSink->SetIpv6RecvTclass(ipv6RecvTclass);
recvSink->SetIpv6RecvHopLimit(ipv6RecvHoplimit);
recvSink->Bind(local);
recvSink->SetRecvCallback(MakeCallback(&ReceivePacket));
// Sender socket on n0
Ptr<Socket> source = Socket::CreateSocket(n.Get(0), tid);
Inet6SocketAddress remote = Inet6SocketAddress(i6.GetAddress(1, 1), 4477);
// Set socket options, it is also possible to set the options after the socket has been
// created/connected.
if (ipv6Tclass != 0)
{
source->SetIpv6Tclass(ipv6Tclass);
}
if (ipv6Hoplimit > 0)
{
source->SetIpv6HopLimit(ipv6Hoplimit);
}
source->Connect(remote);
AsciiTraceHelper ascii;
csma.EnableAsciiAll(ascii.CreateFileStream("socket-options-ipv6.tr"));
csma.EnablePcapAll("socket-options-ipv6", false);
// Schedule SendPacket
Time interPacketInterval = Seconds(packetInterval);
Simulator::ScheduleWithContext(source->GetNode()->GetId(),
Seconds(1),
&SendPacket,
source,
packetSize,
packetCount,
interPacketInterval);
NS_LOG_INFO("Run Simulation.");
Simulator::Run();
Simulator::Destroy();
NS_LOG_INFO("Done.");
return 0;
}
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