Java Doc for ClientEventHandler.java in  » Net » QuickServer » org » quickserver » net » server » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » QuickServer » org.quickserver.net.server 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.quickserver.net.server.ClientEventHandler

All known Subclasses:   test.org.quickserver.net.server.TestEventHandler,  org.quickserver.net.server.impl.DefaultClientEventHandler,  filesrv.CommandHandler,  echoserver.EchoCommandHandler,  org.quickserver.net.qsadmin.CommandHandler,  xmladder.CommandHandler,  pipeserver.CommandHandler,  chatserver.ChatCommandHandler,
ClientEventHandler
public interface ClientEventHandler (Code)
This interface defines the methods that should be implemented by any class that wants to handle client events.

Recommendations to be followed when implementing ClientEventHandler

  • Should have a default constructor.
  • Should be thread safe.
  • It should not store any data that may is associated with a particular client.
  • If any client data is need to be saved from the client session, it should be saved to a ClientData class, which can be retrieved using handler.getClientData() method.

If not ClientEventHandler is set for QuickServer then a default implementation org.quickserver.net.server.impl.DefaultClientEventHandler is used.

Ex:

 package echoserver;
 import java.net.*;
 import java.io.*;
 import org.quickserver.net.server.ClientEventHandler;
 import org.quickserver.net.server.ClientHandler;
 public class EchoEventHandler implements ClientEventHandler {
 public void gotConnected(ClientHandler handler)
 throws SocketTimeoutException, IOException {
 handler.sendSystemMsg("Connection opened : "+
 handler.getSocket().getInetAddress());
 handler.sendClientMsg("Welcome to EchoServer v1.0 ");
 handler.sendClientMsg("Note: Password = Username");
 handler.sendClientMsg("Send 'Quit' to exit");
 }
 public void lostConnection(ClientHandler handler) 
 throws IOException {
 handler.sendSystemMsg("Connection lost : " + 
 handler.getSocket().getInetAddress());
 }
 public void closingConnection(ClientHandler handler) 
 throws IOException {
 handler.sendSystemMsg("Connection closing : " + 
 handler.getSocket().getInetAddress());
 }
 }
 


since:
   1.4.5
author:
   Akshathkumar Shetty




Method Summary
public  voidclosingConnection(ClientHandler handler)
     Method called when client connection is closed.
public  voidgotConnected(ClientHandler handler)
     Method called when there is a new client connects to the QuickServer.
public  voidlostConnection(ClientHandler handler)
     Method called when client connection is lost.



Method Detail
closingConnection
public void closingConnection(ClientHandler handler) throws IOException(Code)
Method called when client connection is closed. Don't write to the connection in this method. Its just information, you can use to log time and ip of client closing connection.
exception:
  java.io.IOException - if io error in socket



gotConnected
public void gotConnected(ClientHandler handler) throws SocketTimeoutException, IOException(Code)
Method called when there is a new client connects to the QuickServer. Can be used to send welcome message to the client and logging.
exception:
  java.net.SocketTimeoutException - if socket times out
exception:
  java.io.IOException - if io error in socket



lostConnection
public void lostConnection(ClientHandler handler) throws IOException(Code)
Method called when client connection is lost. Don't write to the connection in this method. Its just information, to be used at the Server end. It can be caused due to network errors.
exception:
  java.io.IOException - if io error in socket



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