rice.pastry.wire.messaging.datagram
Class DatagramMessage

java.lang.Object
  |
  +--rice.pastry.wire.messaging.datagram.DatagramMessage

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

AcknowledgementMessage, DatagramTransportMessage, PingMessage

public abstract class DatagramMessage

extends java.lang.Object

implements java.io.Serializable

Class which wraps all messages to be sent through the UDP-based pastry protocol. Adds on a "packet number" which should be repeated in the AcknowledgementMessage ack packet.

Version:

$Id: DatagramMessage.java,v 1.2 2002/09/09 01:19:48 amislove Exp $

Author:

Alan Mislove

See Also:

Serialized Form

Field Summary

protected rice.pastry.NodeId	destination
protected int	num
protected rice.pastry.NodeId	source

Constructor Summary

DatagramMessage(rice.pastry.NodeId source, rice.pastry.NodeId destination, int num)
Builds a DatagramMessage given a packet number

Method Summary

rice.pastry.wire.messaging.datagram.AcknowledgementMessage	getAck(java.net.InetSocketAddress address) Returns the approriate 'ack' message for this datagram transport message.
rice.pastry.NodeId	getDestination() Returns the NodeId which is the destination
int	getNum() Returns the "packet number" of this transmission
rice.pastry.NodeId	getSource() Returns the NodeId from which this message came.
void	setNum(int num) Sets the "packet number" of this transmission
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

num

protected int num

source

protected rice.pastry.NodeId source

destination

protected rice.pastry.NodeId destination

Constructor Detail

DatagramMessage

public DatagramMessage(rice.pastry.NodeId source,
                       rice.pastry.NodeId destination,
                       int num)

Builds a DatagramMessage given a packet number

Parameters:

num - The "packet number"

Method Detail

getNum

public int getNum()

Returns the "packet number" of this transmission

Returns:

The packet number of this message.

setNum

public void setNum(int num)

Sets the "packet number" of this transmission

Parameters:

num - The packet number

getSource

public rice.pastry.NodeId getSource()

Returns the NodeId from which this message came.

Returns:

This message's source

getDestination

public rice.pastry.NodeId getDestination()

Returns the NodeId which is the destination

Returns:

This message's destination

getAck

public rice.pastry.wire.messaging.datagram.AcknowledgementMessage getAck(java.net.InetSocketAddress address)

Returns the approriate 'ack' message for this datagram transport message.

Parameters:

address - The address the ack will be sent to

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object