routing

Class LifeRouter

java.lang.Object

routing.MessageRouter

routing.ActiveRouter

routing.LifeRouter

public class LifeRouter
extends ActiveRouter

Router module mimicking the game-of-life behavior

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	NM_COUNT_S Neighboring message count -setting id ("nmcount").

Fields inherited from class routing.ActiveRouter

DELETE_DELIVERED_S, deleteDelivered, RESPONSE_PREFIX, sendingConnections

Fields inherited from class routing.MessageRouter

B_SIZE_S, DENIED_LOW_RESOURCES, DENIED_NO_SPACE, DENIED_OLD, DENIED_POLICY, DENIED_TTL, DENIED_UNSPECIFIED, MSG_TTL_S, msgTtl, Q_MODE_FIFO, Q_MODE_RANDOM, RCV_OK, SEND_QUEUE_MODE_S, TRY_LATER_BUSY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LifeRouter(LifeRouter r) Copy constructor.
	LifeRouter(Settings s) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected int	checkReceiving(Message m, DTNHost from) Checks if router "wants" to start receiving message (i.e.
LifeRouter	replicate() Creates a replicate of this router.
void	update() Checks out all sending connections to finalize the ready ones and abort those whose connection went down.

Methods inherited from class routing.ActiveRouter

addToSendingConnections, canStartTransfer, changedConnection, createNewMessage, dropExpiredMessages, exchangeDeliverableMessages, getConnections, getMessagesForConnected, getNextMessageToRemove, getRoutingInfo, hasEnergy, init, isSending, isTransferring, makeRoomForMessage, makeRoomForNewMessage, messageTransferred, receiveMessage, requestDeliverableMessages, shuffleMessages, startTransfer, transferAborted, transferDone, tryAllMessages, tryAllMessagesToAllConnections, tryMessagesForConnected, tryMessagesToConnections

Methods inherited from class routing.MessageRouter

addApplication, addToMessages, compareByQueueMode, deleteMessage, getApplications, getBufferSize, getFreeBufferSize, getHost, getMessage, getMessageCollection, getNrofMessages, hasMessage, isBlacklistedMessage, isDeliveredMessage, isIncomingMessage, messageAborted, putToIncomingBuffer, removeFromIncomingBuffer, removeFromMessages, sendMessage, sortByQueueMode, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

NM_COUNT_S

public static final java.lang.String NM_COUNT_S

Neighboring message count -setting id ("nmcount"). Two comma separated values: min and max. Only if the amount of connected nodes with the given message is between the min and max value, the message is accepted for transfer and kept in the buffer.

See Also:

Constant Field Values

Constructor Detail

LifeRouter

public LifeRouter(Settings s)

Constructor. Creates a new message router based on the settings in the given Settings object.

Parameters:

s - The settings object

LifeRouter

protected LifeRouter(LifeRouter r)

Copy constructor.

Parameters:

r - The router prototype where setting values are copied from

Method Detail

checkReceiving

protected int checkReceiving(Message m,
                 DTNHost from)

Description copied from class: ActiveRouter

Checks if router "wants" to start receiving message (i.e. router isn't transferring, doesn't have the message and has room for it).

Overrides:

checkReceiving in class ActiveRouter

Parameters:

m - The message to check

Returns:

A return code similar to MessageRouter.receiveMessage(Message, DTNHost), i.e. MessageRouter.RCV_OK if receiving seems to be OK, TRY_LATER_BUSY if router is transferring, DENIED_OLD if the router is already carrying the message or it has been delivered to this router (as final recipient), or DENIED_NO_SPACE if the message does not fit into buffer

update

public void update()

Description copied from class: ActiveRouter

Checks out all sending connections to finalize the ready ones and abort those whose connection went down. Also drops messages whose TTL <= 0 (checking every one simulated minute).

Overrides:

update in class ActiveRouter

See Also:

ActiveRouter.addToSendingConnections(Connection)

replicate

public LifeRouter replicate()

Description copied from class: MessageRouter

Creates a replicate of this router. The replicate has the same settings as this router but empty buffers and routing tables.

Specified by:

replicate in class MessageRouter

Returns:

The replicate