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Code Issues Releases Wiki Activity

Use more accurate delay measurement with UdpServer

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This commit is contained in:
Tim Schubert 2020-08-18 17:34:10 +02:00
parent c1218039da
commit b4eb471eb1
1 changed files with 14 additions and 20 deletions
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34
examples/leo-delay-tracing-example.cc
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@ -5,28 +5,20 @@
#include "ns3/leo-module.h" #include "ns3/leo-module.h"
#include "ns3/network-module.h" #include "ns3/network-module.h"
#include "ns3/aodv-module.h" #include "ns3/aodv-module.h"
#include "ns3/udp-server.h"
using namespace ns3; using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("LeoDelayTracingExample"); NS_LOG_COMPONENT_DEFINE ("LeoDelayTracingExample");
Time t_start;
uint64_t send = 0;;
uint64_t received = 0;
static void
EchoTx (std::string context, Ptr<const Packet> packet)
{
send ++;
t_start = Simulator::Now ();
}
static void static void
EchoRx (std::string context, Ptr<const Packet> packet) EchoRx (std::string context, Ptr<const Packet> packet)
{ {
received ++; SeqTsHeader seqTs;
Time now = Simulator::Now (); Ptr<Packet> p = packet->Copy ();
std::cout << context << "," << (now - t_start) << std::endl; p->RemoveHeader (seqTs);
// seqnr, timestamp, delay
std::cout << context << "," << seqTs.GetSeq () << "," << seqTs.GetTs () << "," << Simulator::Now () - seqTs.GetTs () << std::endl;
} }
int main (int argc, char *argv[]) int main (int argc, char *argv[])
@ -91,22 +83,22 @@ int main (int argc, char *argv[])
Ipv4InterfaceContainer utIp = ipv4.Assign (utNet); Ipv4InterfaceContainer utIp = ipv4.Assign (utNet);
// we want to ping terminals // we want to ping terminals
UdpEchoServerHelper echoServer (9); UdpServerHelper echoServer (9);
ApplicationContainer serverApps = echoServer.Install (stations.Get (1)); ApplicationContainer serverApps = echoServer.Install (stations.Get (1));
// install a client on one of the terminals // install a client on one of the terminals
ApplicationContainer clientApps; ApplicationContainer clientApps;
Address remote = stations.Get (1)->GetObject<Ipv4> ()->GetAddress (1, 0).GetLocal ();//utIp.GetAddress (1, 0); Address remote = stations.Get (1)->GetObject<Ipv4> ()->GetAddress (1, 0).GetLocal ();//utIp.GetAddress (1, 0);
UdpEchoClientHelper echoClient (remote, 9); UdpClientHelper echoClient (remote, 9);
echoClient.SetAttribute ("MaxPackets", UintegerValue (360)); echoClient.SetAttribute ("MaxPackets", UintegerValue (360));
echoClient.SetAttribute ("Interval", TimeValue (Minutes (1.0))); echoClient.SetAttribute ("Interval", TimeValue (Minutes (1.0)));
echoClient.SetAttribute ("PacketSize", UintegerValue (1024)); echoClient.SetAttribute ("PacketSize", UintegerValue (1024));
clientApps.Add (echoClient.Install (stations.Get (3))); clientApps.Add (echoClient.Install (stations.Get (3)));
Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::UdpEchoClient/Rx", Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::UdpServer/Rx",
MakeCallback (&EchoRx)); MakeCallback (&EchoRx));
Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::UdpEchoClient/Tx",
MakeCallback (&EchoTx)); std::cout << "Context,Sequence Number,Timestamp,Delay" << std::endl;
serverApps.Start (Seconds (1)); serverApps.Start (Seconds (1));
clientApps.Start (Seconds (2)); clientApps.Start (Seconds (2));
@ -115,7 +107,9 @@ int main (int argc, char *argv[])
Simulator::Run (); Simulator::Run ();
Simulator::Destroy (); Simulator::Destroy ();
std::cout << std::endl << received << "," << send << std::endl; Ptr<UdpServer> server = StaticCast<UdpServer> (serverApps.Get (0));
std::cout << "Received,Lost" << std::endl
<< server->GetReceived () << "," << server->GetLost () << std::endl;
return 0; return 0;
} }