Package de.das.encrypter.comm

Class UdpReceiver

java.lang.Object

java.lang.Thread

de.das.encrypter.comm.UdpReceiver

All Implemented Interfaces:

Runnable

public class UdpReceiver
extends Thread

The class provides a receiver service for UDP data packets on a specific port that continuously waits for incoming data and forwards it to the registered data receiver.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor	Description
UdpReceiver(int port, DataReceiver recv)	Creates a new instance of the UDP receiver.
UdpReceiver(String name, int port, DataReceiver recv)	Creates a new instance of the UDP receiver.

Method Summary

Modifier and Type	Method	Description
void	kill()	Sets the killed-flag, closes the socket and performs an interrupt.
void	run()	Heart of the thread.
void	setDataReceiver(DataReceiver dataReceiver)	Set an instance which wants to get the received data.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Details

UdpReceiver

public UdpReceiver(int port,
 DataReceiver recv)
            throws Exception

Creates a new instance of the UDP receiver.

Parameters:

port - the port that will be listened to.

recv - the data expecting DataReceiver instance.

Throws:

Exception - if the datagram socket couldn't be established.

UdpReceiver

public UdpReceiver(String name,
 int port,
 DataReceiver recv)
            throws Exception

Creates a new instance of the UDP receiver.

Parameters:

name - a name for the receiver.

port - the port that will be listened to.

recv - the data expecting DataReceiver instance.

Throws:

Exception - if the datagram socket couldn't be established.

Method Details

setDataReceiver

public void setDataReceiver(DataReceiver dataReceiver)

Set an instance which wants to get the received data.

Parameters:

dataReceiver -

run

public void run()

Heart of the thread. It runs in an endless loop and provides the service continuously until the method "kill()" was invoked. When data is received, it is forwarded to the registered data recipient along with the IP address of the sender.

Specified by:

run in interface Runnable

Overrides:

run in class Thread

kill

public void kill()

Sets the killed-flag, closes the socket and performs an interrupt.