cTopology and getDistanceToTarget

[imtit...@gmail.com]

I am using the following code to get the number of hops from the current node to the target node. The problem is that the number of hops is very large (inf) whent I cast it to string. Also, it gives me the same number of hops to all nodes  :

cTopology topo;

      topo.extractByModulePath(cStringTokenizer("*.router*").asVector());

      cTopology::Node *thisNode = topo.getNodeFor(getParentModule());

      broadcastmsg=1;

   for (int i = 0; i < topo.getNumNodes(); i++) {

    if (topo.getNode(i) == thisNode) continue; // skip ourselves

      {cModule *targetModule =topo.getNode(i)->getModule();

      EV_INFO << "We are "<<topo.getNode(i)->getDistanceToTarget()<<"hops to to target.\n";

      }

    }

Help is much appreciated 

[Alfonso Ariza Quintana]

you need to call calculateUnweightedSingleShortestPathsTo() first to compute the route. This only works in wired network.

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De: omn...@googlegroups.com <omn...@googlegroups.com> en nombre de imtit...@gmail.com <imtit...@gmail.com>
Enviado: domingo, 30 de mayo de 2021 2:16
Para: OMNeT++ Users <omn...@googlegroups.com>
Asunto: [Omnetpp-l] cTopology and getDistanceToTarget

 

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[imtit...@gmail.com]

Thanks  Alfonso  for reply.

I did what you suggested. I called calculateUnweightedSingleShortestPathsTo() but still I get zeros by topo.getNode(i)->getDistanceToTarget():

      cTopology topo;

      topo.extractByModulePath(cStringTokenizer("*.router*").asVector());

      cTopology::Node *thisNode = topo.getNodeFor(getParentModule());

      broadcastmsg=1;

      cTopology::Node *node ;

    for (int i = 0; i < topo.getNumNodes(); i++) {

        node= topo.getNode(i);

    if (node == thisNode) { // skip ourselves

               continue;}

     targetNode->enable();

    topo.calculateUnweightedSingleShortestPathsTo(targetNode);

    EV_INFO << "There are "<<topo.getNode(i)->getDistanceToTarget()<<"hops.\n";

      }

[imtit...@gmail.com]

I have a wired network, and this piece of code is located in app[0] in the router .ini file is following:

**.router*.numApps = 1

**.router*.app[0].typename = "CoIDS"

[Alfonso Ariza Quintana]

This is that I suspect.

I suspect that you are extracting only a part of your network

topo.extractByModulePath(cStringTokenizer("*.router*").asVector());

If this is true, cTopology cannot find a route in the set of extracted nodes.

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De: omn...@googlegroups.com <omn...@googlegroups.com> en nombre de imtit...@gmail.com <imtit...@gmail.com>

Enviado: martes, 1 de junio de 2021 23:20
Para: OMNeT++ Users <omn...@googlegroups.com>
Asunto: Re: [Omnetpp-l] cTopology and getDistanceToTarget

 

To view this discussion on the web visit https://groups.google.com/d/msgid/omnetpp/93999d24-4a66-4eb5-becd-e095a59b646an%40googlegroups.com.