Need help finding number of transmitted packets/ PDR

[Aamina Binte Khurram]

Hello,.

I'm working with ns3-mmwave, and the millicar module specifically. I need to calculate the packet delivery ratio. For this, I wanted to record the number of transmitted packets and have been trying to figure out a way to you a trace for this but have been unsuccessful. I understand this might be a novice's question but I am completely at a loss right now.

The existing code traces just received packets by the server:

UdpEchoServerHelper server (port);

  ApplicationContainer echoApps = server.Install (n.Get (1));

  echoApps.Start (Seconds (0.0));

  AsciiTraceHelper asciiTraceHelper;

  Ptr<OutputStreamWrapper> stream = asciiTraceHelper.CreateFileStream ("simple-one-stats.txt");

  echoApps.Get(0)->TraceConnectWithoutContext ("Rx", MakeBoundCallback (&Rx, stream));

  UdpClientHelper client (n.Get (1)->GetObject<Ipv4> ()->GetAddress (1, 0).GetLocal (), port);

  ApplicationContainer apps = client.Install (n.Get (0));

Thank you for your patience, any help would be appreciated.

[Tommaso Pecorella]

Depending on the sending application you might have a "Tx" trace. "UdpClient" has it.

[Aamina Binte Khurram]

Thank you for your reply Tommaso. Printing the instance type of the application says it is a UdpClient, but for some reason, the Tx trace doesn't seem to be working.

  UdpClientHelper client (n.Get (1)->GetObject<Ipv4> ()->GetAddress (1, 0).GetLocal (), port);

  ApplicationContainer apps = client.Install (n.Get (0));

  std::cout << apps.Get(0)->GetInstanceTypeId ().GetName () << std::endl;

  // Connecting the callback to the UdpClient's Tx trace source

  apps.Get (0)->TraceConnectWithoutContext ("Tx", MakeCallback (&Tx));

And this is the Tx function:

static void Tx (Ptr<const Packet> p)

{

 std::cout << "Tx function called" << std::endl;

 g_txPackets++;

}

It is not called. Any ideas on what I might be missing?

[Aamina Binte Khurram]

I used the UdpClient's GetTotalTx() method instead. Seems to be working!

Thanks for helping me out!