Random ping test application for I3. More...

Inheritance diagram for I3Anycast:

Public Member Functions
void	initializeApp (int stage)
	App initialization - should be overwritten by application.
void	initializeI3 ()
	Application I3 initialize - should be overwritten by application.
void	deliver (I3Trigger &trigger, I3IdentifierStack &stack, cPacket *msg)
	Delivers packets coming from I3 - should be overwritten by application.
void	handleTimerEvent (cMessage *msg)
	Handles timers - should be overwritten by application.
Public Member Functions inherited from I3BaseApp
	I3BaseApp ()
	Constructor.
	~I3BaseApp ()
	Destructor.

Public Attributes
int	myIndex
cMessage *	sendPacketTimer

Static Private Attributes
static int	index = 0

Additional Inherited Members
Protected Types inherited from I3BaseApp
enum	I3MobilityStage { I3_MOBILITY_BEFORE_UPDATE, I3_MOBILITY_UPDATED }
Protected Member Functions inherited from I3BaseApp
int	numInitStages () const
	Returns number of init stages required.
void	initialize (int stage)
	Basic initialization.
void	bootstrapI3 ()
	Internal I3 bootstrap - connects to I3, inserts sampling triggers and initializes timers.
virtual void	handleUDPMessage (cMessage *msg)
	Handles messages incoming from UDP gate.
void	handleMessage (cMessage *msg)
	Handles incoming messages.
void	sendToI3 (I3Message *msg)
	Sends a message to I3.
void	sendThroughUDP (cMessage *msg, const I3IPAddress &ip)
	Sends a message through UDP.
void	refreshTriggers ()
	Refreshes (reinserts) stored triggers.
void	refreshSamples ()
	Refreshes sampling triggers and selects fastest server as gateway.
I3Identifier	retrieveClosestIdentifier ()
void	sendPacket (const I3Identifier &id, cPacket *msg, bool useHint=false)
	Routes a packet through I3, passing an identifier stack composed of a single identifier.
void	sendPacket (const I3IdentifierStack &stack, cPacket *msg, bool useHint=false)
	Routes a packet through I3.
void	insertTrigger (const I3Identifier &identifier, bool store=true)
	Inserts a trigger into I3, composed by the given identifier and an identifier stack containing only this node's IP address.
void	insertTrigger (const I3Identifier &identifier, const I3IdentifierStack &stack, bool store=true)
	Inserts a trigger into I3 with the given identifier and identifier stack.
void	insertTrigger (const I3Trigger &t, bool store=true)
	Inserts the given trigger into I3.
void	removeTrigger (const I3Identifier &identifier)
	Removes all triggers from the list of inserted triggers whose identifiers equal the one given.
void	removeTrigger (const I3Trigger &trigger)
	Removes a trigger from I3.
std::set< I3Trigger > &	getInsertedTriggers ()
	Returns the list of inserted triggers.
void	receiveChangeNotification (int category, const cPolymorphic *details)
virtual void	doMobilityEvent (I3MobilityStage stage)
Protected Attributes inherited from I3BaseApp
int	numSent
	Number of sent messages.
int	sentBytes
int	numReceived
	Number of received messages.
int	receivedBytes
int	numIsolations
	Number of times this node has been isolated - i.e.
IPvXAddress	nodeIPAddress
	Cached IP address of this node.
std::set< I3Trigger >	insertedTriggers
	Stored I3 triggers sent from this node, to be refreshed automatically.
std::map< I3Identifier, I3CachedServer >	samplingCache
std::map< I3Identifier, I3CachedServer >	identifierCache
I3CachedServer	gateway
cMessage *	refreshTriggersTimer
int	refreshTriggersTime
cMessage *	refreshSamplesTimer
int	refreshSamplesTime
cMessage *	initializeTimer
cMessage *	bootstrapTimer

Detailed Description

Random ping test application for I3.

First, all nodes insert a trigger in which the identifier has a constant prefix but a random postfix. Then the first node sends a message with an identifier that has the previous prefix, but a different random suffix. That makes that, when the packet is matched within I3 and sent to the closest match, it will land each time on a random node. The fact that it retains the same prefix guarantees that a match will always exist and the packet won't be dropped. After arrival in each node, the process is repeated.

Definition at line 34 of file I3Anycast.cc.

Member Function Documentation

void I3Anycast::deliver	(	I3Trigger &	trigger,
		I3IdentifierStack &	stack,
		cPacket *	msg
	)

virtual

Delivers packets coming from I3 - should be overwritten by application.

Parameters

trigger	Application trigger to which the packet was sent
stack	Identifier stack passed from I3
msg	Arriving message

Reimplemented from I3BaseApp.

Definition at line 81 of file I3Anycast.cc.

{
    // after arrival, repeat the same process
    I3Identifier id("I3 Anycast test"); // create an identifier with the previously used hash as prefix
    id.createRandomSuffix(); // and a random suffix
    getParentModule()->bubble("Got message - sending back!");
    sendPacket(id, msg); // and send back to I3
}

void I3Anycast::handleTimerEvent ( cMessage * msg )

virtual

Handles timers - should be overwritten by application.

Parameters

msg	Timer to be handled

Reimplemented from I3BaseApp.

Definition at line 66 of file I3Anycast.cc.

{
    if (myIndex == 0) { // only the first node
        cPacket *cmsg = new cPacket("woot");
        I3Identifier id("I3 Anycast test"); // create an identifier with the previously used hash as prefix
        id.createRandomSuffix(); // and a random suffix
        //cout << "Send message!" << endl;
        getParentModule()->bubble("Sending message!");
        sendPacket(id, cmsg); // send the first message with that identifier
    }
    delete msg;
}

void I3Anycast::initializeApp ( int stage )

virtual

App initialization - should be overwritten by application.

I3 related commands should go in initializeI3.

Parameters

stage Initialization stage passed from initialize()

Reimplemented from I3BaseApp.

Definition at line 50 of file I3Anycast.cc.

                                       {
    myIndex = index++;
}

void I3Anycast::initializeI3 ( )

virtual

Application I3 initialize - should be overwritten by application.

Reimplemented from I3BaseApp.

Definition at line 55 of file I3Anycast.cc.

{
    sendPacketTimer = new cMessage("packet timer");
    scheduleAt(simTime() + 20, sendPacketTimer);
    I3Identifier identifier("I3 Anycast test"); // create an identifier with the given string hash as prefix
    identifier.createRandomSuffix(); // set the suffix as random
    insertTrigger(identifier); // and insert a trigger with that id
}

Member Data Documentation

int I3Anycast::index = 0

staticprivate

Definition at line 37 of file I3Anycast.cc.

int I3Anycast::myIndex

Definition at line 39 of file I3Anycast.cc.

cMessage* I3Anycast::sendPacketTimer

Definition at line 40 of file I3Anycast.cc.

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

I3Anycast.cc

Public Member Functions

Public Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

Member Data Documentation