com.antelmann.net
Class ChatServer

java.lang.Object
  java.lang.Thread
      com.antelmann.net.ChatServer

All Implemented Interfaces:

ConnectionDispatcher, NetConnectionHandler, Runnable

public class ChatServer
extends Thread
implements ConnectionDispatcher, NetConnectionHandler

ChatServer implements a server that handles chat messages that are broadcasted among the active connections to the server.

Author:

Holger Antelmann

See Also:

JChat

Nested Class Summary

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

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

static Handshake

HANDSHAKE

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

ChatServer(int serverPort, Logger logger)

Method Summary

void	connectionLost(NetConnection con) called when a connection caused an IOException during reading or writing; the connection may not have been closed at this point.
SocketConnection	createConnection(Socket socket) produces a NetConnection based on the given socket.
MessageDelegator	createDispatcher(NetConnection con, NetConnectionHandler handler) responsible for creating the delegator based on the created connection and the associated handler
NetConnectionHandler	createHandler(NetConnection con) produces a NetConnectionHandler which will be started in a new Thread (created by the NetConnectionServer's ThreadFactory) to handle the given NetConnection and listens to messages.
NetConnection[]	getConnections()
Handshake	getHandshake() returns a signature object used to identify the desired connection type handled by this ConnectionDispatcher object
int	getLocalPort() returns the port the server is listening on
Logger	getLogger()
void	handleMessage(Object message, NetConnection con) called when a message is received by the given NetConnection object
static void	main(String[] args) starts a ChatServer after making some GUI selections
void	run() starts the underlying server
void	shutdown()
static void	startServerWithGUI(Logger logger) uses the com.antelmann.net.chat.port property from Settings

Methods inherited from class java.lang.Thread

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

Methods inherited from class java.lang.Object

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

Field Detail

HANDSHAKE

public static final Handshake HANDSHAKE

Constructor Detail

ChatServer

public ChatServer(int serverPort,
                  Logger logger)
           throws IOException

Throws:

IOException

Method Detail

createConnection

public SocketConnection createConnection(Socket socket)
                                  throws IOException

Description copied from interface: ConnectionDispatcher

produces a NetConnection based on the given socket.

Specified by:

createConnection in interface ConnectionDispatcher

Throws:

IOException

See Also:

SocketConnection.createServerConnection(Socket, Handshake)

connectionLost

public void connectionLost(NetConnection con)

Description copied from interface: NetConnectionHandler

called when a connection caused an IOException during reading or writing; the connection may not have been closed at this point.
Usually, it is a good idea to close the connection here explicitly.

Specified by:

connectionLost in interface NetConnectionHandler

getHandshake

public Handshake getHandshake()

Description copied from interface: ConnectionDispatcher

returns a signature object used to identify the desired connection type handled by this ConnectionDispatcher object

Specified by:

getHandshake in interface ConnectionDispatcher

createHandler

public NetConnectionHandler createHandler(NetConnection con)

Description copied from interface: ConnectionDispatcher

produces a NetConnectionHandler which will be started in a new Thread (created by the NetConnectionServer's ThreadFactory) to handle the given NetConnection and listens to messages. Typically, the returned object could be a MessageDelegator.

Specified by:

createHandler in interface ConnectionDispatcher

See Also:

MessageDelegator

createDispatcher

public MessageDelegator createDispatcher(NetConnection con,
                                         NetConnectionHandler handler)

Description copied from interface: ConnectionDispatcher

responsible for creating the delegator based on the created connection and the associated handler

Specified by:

createDispatcher in interface ConnectionDispatcher

handleMessage

public void handleMessage(Object message,
                          NetConnection con)

Description copied from interface: NetConnectionHandler

called when a message is received by the given NetConnection object

Specified by:

handleMessage in interface NetConnectionHandler

shutdown

public void shutdown()

run

public void run()

starts the underlying server

Specified by:

run in interface Runnable

Overrides:

run in class Thread

getLocalPort

public int getLocalPort()

returns the port the server is listening on

getConnections

public NetConnection[] getConnections()

getLogger

public Logger getLogger()

startServerWithGUI

public static void startServerWithGUI(Logger logger)
                               throws IOException

uses the com.antelmann.net.chat.port property from Settings

Throws:

IOException

See Also:

Settings

main

public static void main(String[] args)

starts a ChatServer after making some GUI selections