txc1.cc

#include <string.h>
#include <omnetpp.h>

using namespace omnetpp;


/**
     * Derive the Txc1 class from cSimpleModule. In the Tictoc1 network,
     * both the `tic' and `toc' modules are Txc1 objects, created by OMNeT++
     * at the beginning of the simulation.
     */
class Txc1 : public cSimpleModule
{
protected:
    // The following redefined virtual function holds the algorithm.
    virtual void initialize() override;
    virtual void handleMessage(cMessage *msg) override;
};

// The module class needs to be registered witm omnet++
Define_Module(Txc1);

void Txc1::initialize()
{
    // Initialize is called at the beginning of the simulation.
        // To bootstrap the tic-toc-tic-toc process, one of the modules needs
        // to send the first message. Let this be `tic'.
    if (strcmp("tic", getName()) == 0) {
        cMessage *msg = new cMessage("tictocMsg");
        send(msg, "out");
    }
}

void Txc1::handleMessage(cMessage *msg)
{
    // The handleMessage() method is called whenever a message arrives
        // at the module. Here, we just send it to the other module, through
        // gate `out'. Because both `tic' and `toc' does the same, the message
        // will bounce between the two.
    send(msg, "out");
}