So here we need to copy this code and paste in the existing codes of Sockets Example for cProperties header.

Code for Cloud.cc:

#include <omnetpp.h>

#include “NetPkt_m.h”

#include “omnetpp/cproperties.h”

using namespace omnetpp;

class Cloud : public cSimpleModule

{

  private:

    simtime_t propDelay;

    cProperties properties;

  protected:

    virtual void initialize() override;

    virtual void handleMessage(cMessage *msg) override;

};

Define_Module(Cloud);

void Cloud::initialize()

{

    propDelay = (double)par(“propDelay”);

    EV << “Initialized propagation delay to ” << propDelay << ” seconds.” << endl;

}

void Cloud::handleMessage(cMessage *msg)

{

    EV << “Received a message of type: ” << msg->getClassName() << endl;

    NetPkt *pkt = check_and_cast<NetPkt *>(msg);

    int dest = pkt->getDestAddress();

    EV << “Relaying packet to addr=” << dest << ” after a delay of ” << propDelay << ” seconds.” << endl;

    sendDelayed(pkt, propDelay, “g$o”, dest);

    cProperty *prop = new cProperty(“cloud”, “”);

    properties.add(prop);

    EV << “Added a property with name: ” << prop->getName() << endl;

    EV << “Total properties in Cloud module: ” << properties.getNumProperties() << endl;

    for (int i = 0; i < properties.getNumProperties(); ++i) {

        cProperty *p = properties.get(i);

        EV << “Property ” << i + 1 << ” Name: ” << p->getName() << endl;

        const char *index = nullptr;

        const char *value = p->getValue(index);

    }

}