uk.ac.ic.doc.automed.p2p.communication
Class AbstractClient

java.lang.Object
  uk.ac.ic.doc.automed.p2p.communication.AbstractClient

All Implemented Interfaces:

Threadable

Direct Known Subclasses:

TCPClient, UDPClient

public abstract class AbstractClient
extends java.lang.Object
implements Threadable

Field Summary

protected boolean	ackExpected
protected byte[]	dataToSend
protected RequestListener	handler
protected boolean	isReady
protected java.lang.String	serverHostName
protected int	serverPort

Constructor Summary

AbstractClient(RequestListener handler)
Create a client with no fixed specification of destination hosts

AbstractClient(java.lang.String serverHostName, int serverPort, RequestListener handler)

AbstractClient(java.lang.String serverHostName, int serverPort, RequestListener handler, byte[] dataToSend)

Method Summary

RequestListener	getHandlerObject() Return reference to RequestListener (handler) object
boolean	getReadyState() Always true
abstract void	handleAction() Handle thread's interrupted action
abstract void	runAction() Implement communication process
void	setDataToSend(java.lang.String serverHostName, int serverPort, byte[] dataToSend, boolean ackExpected) Set the data to send (with acknowledgement specified).
protected void	setReadyState(boolean state)

Methods inherited from class java.lang.Object

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

Field Detail

serverHostName

protected java.lang.String serverHostName

serverPort

protected int serverPort

handler

protected RequestListener handler

dataToSend

protected byte[] dataToSend

ackExpected

protected boolean ackExpected

isReady

protected boolean isReady

Constructor Detail

AbstractClient

public AbstractClient(RequestListener handler)

Create a client with no fixed specification of destination hosts

AbstractClient

public AbstractClient(java.lang.String serverHostName,
                      int serverPort,
                      RequestListener handler)

AbstractClient

public AbstractClient(java.lang.String serverHostName,
                      int serverPort,
                      RequestListener handler,
                      byte[] dataToSend)

Method Detail

setDataToSend

public void setDataToSend(java.lang.String serverHostName,
                          int serverPort,
                          byte[] dataToSend,
                          boolean ackExpected)

Set the data to send (with acknowledgement specified). This overrides
{@link setDataToSend(byte[] dataToSend).

This method is used for clients which need to send messages to different
targets at different times. An example would be a messaging client of a peer
that needs to answer requests coming from different peers on the network.

Parameters:

serverHostName - address of remote host to send

serverPort - port on remote host

dataToSend - an array of bytes to send via UDP

ackExpected - whether or not to expect an acknowledgement

getReadyState

public boolean getReadyState()

Always true

Specified by:

getReadyState in interface Threadable

setReadyState

protected void setReadyState(boolean state)

getHandlerObject

public RequestListener getHandlerObject()

Return reference to RequestListener (handler) object

runAction

public abstract void runAction()
                        throws AutoMedException

Implement communication process

Specified by:

runAction in interface Threadable

Throws:

AutoMedException

handleAction

public abstract void handleAction()

Handle thread's interrupted action

Specified by:

handleAction in interface Threadable