echoextendedeventhandler.java

一个用java编写的服务器,对于学习网络编程的人来说是个很好的例子

/*
 * This file is part of the QuickServer library 
 * Copyright (C) 2003-2005 QuickServer.org
 *
 * Use, modification, copying and distribution of this software is subject to
 * the terms and conditions of the GNU Lesser General Public License. 
 * You should have received a copy of the GNU LGP License along with this 
 * library; if not, you can download a copy from <http://www.quickserver.org/>.
 *
 * For questions, suggestions, bug-reports, enhancement-requests etc.
 * visit http://www.quickserver.org
 *
 */

package echoserver;

import java.net.*;
import java.io.*;
import org.quickserver.net.server.ClientExtendedEventHandler;
import org.quickserver.net.server.ClientHandler;
import java.util.logging.*;

public class EchoExtendedEventHandler implements ClientExtendedEventHandler {
	private static Logger logger = 
			Logger.getLogger(EchoExtendedEventHandler.class.getName());

	public void handleTimeout(ClientHandler handler) 
			throws SocketException, IOException {
		handler.sendClientMsg("-ERR Timeout");
		if(true) throw new SocketException();
	}

	public void handleMaxAuthTry(ClientHandler handler) throws IOException {
		handler.sendClientMsg("-ERR Max Auth Try Reached");
	}

	public boolean handleMaxConnection(ClientHandler handler) throws IOException {
		//for now lets reject all excess clients
		if(true) {
			handler.sendClientMsg("Server Busy - Max Connection Reached");
			return false;
		}
		return true;
	}
}