Tic8 Class Reference

Inheritance diagram for Tic8:

List of all members.

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Detailed Description

In the previous model we just created another packet if we needed to retransmit. This is OK because the packet didn't contain much, but in real life it's usually more practical to keep a copy of the original packet so that we can re-send it without the need to build it again.

Public Member Functions
	Tic8 ()
virtual	~Tic8 ()
Protected Member Functions
virtual cMessage *	generateNewMessage ()
virtual void	sendCopyOf (cMessage *msg)
virtual void	initialize ()
virtual void	handleMessage (cMessage *msg)
Private Attributes
double	timeout
cMessage *	timeoutEvent
int	seq
cMessage *	message

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Constructor & Destructor Documentation

Tic8::Tic8 (   )

{ timeoutEvent = message = NULL; }

Tic8::~Tic8 (   )  [virtual]

{ cancelAndDelete(timeoutEvent); delete message; }

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Member Function Documentation

cMessage * Tic8::generateNewMessage (   )  [protected, virtual]

{ // Generate a message with a different name every time. char msgname[20]; sprintf(msgname, "tic-%d", ++seq); cMessage *msg = new cMessage(msgname); return msg; }

void Tic8::handleMessage (  cMessage *  msg  )  [protected, virtual]

Reimplemented from cSimpleModule. { if (msg==timeoutEvent) { // If we receive the timeout event, that means the packet hasn't // arrived in time and we have to re-send it. ev << "Timeout expired, resending message and restarting timer\n"; sendCopyOf(message); scheduleAt(simTime()+timeout, timeoutEvent); } else // message arrived { // Acknowledgement received! ev << "Received: " << msg->name() << "\n"; delete msg; // Also delete the stored message and cancel the timeout event. ev << "Timer cancelled.\n"; cancelEvent(timeoutEvent); delete message; // Ready to send another one. message = generateNewMessage(); sendCopyOf(message); scheduleAt(simTime()+timeout, timeoutEvent); } }

void Tic8::initialize (   )  [protected, virtual]

Reimplemented from cModule. { // Initialize variables. seq = 0; timeout = 1.0; timeoutEvent = new cMessage("timeoutEvent"); // Generate and send initial message. ev << "Sending initial message\n"; message = generateNewMessage(); sendCopyOf(message); scheduleAt(simTime()+timeout, timeoutEvent); }

void Tic8::sendCopyOf (  cMessage *  msg  )  [protected, virtual]

{ // Duplicate message and send the copy. cMessage *copy = (cMessage *) msg->dup(); send(copy, "out"); }

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Member Data Documentation

cMessage* Tic8::message [private]

int Tic8::seq [private]

double Tic8::timeout [private]

cMessage* Tic8::timeoutEvent [private]

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The documentation for this class was generated from the following file:

• txc8.cc

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