vanet routing compare.cc terminate SIGSEGV error

[Eweka Osazee]

Need urgent Help please with --vanet routing compare.cc terminate SIGSEGV error using scenerio 2, raw file and error from command line and gdb posted, please i have a mid night dead line

Routing Setup for AODV

Command ['/home/princeozed/Downloads/ns-allinone-3.30.1/ns-3.30.1/build/scratch/vanet-routing-compare', '--protocol=2', '--scenario=2'] terminated with signal SIGSEGV. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>").

[Adesoji Bello]

Hi,

Can you comment out the animation command before the Simulator::Run.

[Eweka Osazee]

still the same error nothing changes

[Gopal Rawat]

Hi,

You need to ensure that the no of sinks nodes  <= half of total nodes , it will run with no such errors (already suggested in the group before too). You can refer this section for understanding this behavior.

void
RoutingHelper::SetupRoutingMessages (NodeContainer & c,
                                     Ipv4InterfaceContainer & adhocTxInterfaces)
{
  // Setup routing transmissions
  OnOffHelper onoff1 ("ns3::UdpSocketFactory",Address ());
  onoff1.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1.0]"));
  onoff1.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0.0]"));

  Ptr<UniformRandomVariable> var = CreateObject<UniformRandomVariable> ();
  int64_t stream = 2;
  var->SetStream (stream);
  for (uint32_t i = 0; i < m_nSinks; i++)
    {
      // protocol == 0 means no routing data, WAVE BSM only
      // so do not set up sink
      if (m_protocol != 0)
        {
          Ptr<Socket> sink = SetupRoutingPacketReceive (adhocTxInterfaces.GetAddress (i), c.Get (i));
        }

      AddressValue remoteAddress (InetSocketAddress (adhocTxInterfaces.GetAddress (i), m_port));
      onoff1.SetAttribute ("Remote", remoteAddress);

      ApplicationContainer temp = onoff1.Install (c.Get (i + m_nSinks));
      temp.Start (Seconds (var->GetValue (1.0,2.0)));
      temp.Stop (Seconds (m_TotalSimTime));
    }
}

regards,

G.

[Eweka Osazee]

can you please explain a little bit more as my number of sinks nodes was not edited or inputed or suggest what should be edited out or a code to make the sink half my nodes

thanks @Gopal Rawat

[Gopal Rawat]

It seems you have not gone through the code completely. If you go thorugh it , you will find the code used has

 

// in VanetRoutingExperiment::VanetRoutingExperiment ()
m_nSinks (10)

and

// in void VanetRoutingExperiment::SetupScenario ()
else if (m_scenario == 2)

    {
      // Realistic vehicular trace in some roads around the university of Houston
      // "low density, 17 total vehicles"
      m_traceFile = "/home/princeozed/mobility.tcl";
      m_logFile = "vtovpro.log";
      m_mobility = 1;
      m_nNodes = 17;  // total number of nodes has been changed here
      m_TotalSimTime = 20.01;
      m_nodeSpeed = 20;
      m_nodePause = 0;
      m_CSVfileName = "vtov.csv";
      m_CSVfileName = "vtov2.csv";
    }

The scenario 2 has total 17 nodes and setup has total 10 sink nodes. Either use 8 or less sink nodes or make total nodes at-least 20 ( whatever suits your application or scenario).

[Eweka Osazee]

oh yes i did that a long time ago and just made the sink 6 and still same error, i have looked through before asking @Gopol

thanks

[Gopal Rawat]

The error is because m_nSinks still holds the value 10 even after the value is changed. See the section below :

static ns3::GlobalValue g_nSinks ("VRCnSinks",
                                  "Number of sink nodes for routing non-BSM traffic",
                                  ns3::UintegerValue (10),
                                  ns3::MakeUintegerChecker<uint32_t> ());

You can make the same changes here and it should work.

regards,

G.

[Eweka Osazee]

Thanks so much @Gopal. 3 straight days resolved finally, God richly bless you and thanks for your time

be safe