netcatprotocolhandler.java

MINA自带的一些小例子

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *  
 *    http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License. 
 *  
 */
package org.apache.mina.example.netcat;

import org.apache.mina.common.ByteBuffer;
import org.apache.mina.common.IdleStatus;
import org.apache.mina.common.IoHandler;
import org.apache.mina.common.IoHandlerAdapter;
import org.apache.mina.common.IoSession;

/**
 * {@link IoHandler} implementation for NetCat client.  This class extended
 * {@link IoHandlerAdapter} for convenience. 
 * 
 * @author The Apache Directory Project ([e-mail])
 * @version $Rev: 555855 $, $Date: 2007-07-13 12:19:00 +0900 (금, 13  7월 2007) $,
 */
public class NetCatProtocolHandler extends IoHandlerAdapter {
    public void sessionOpened(IoSession session) {
        // Set reader idle time to 10 seconds.
        // sessionIdle(...) method will be invoked when no data is read
        // for 10 seconds.
        session.setIdleTime(IdleStatus.READER_IDLE, 10);
    }

    public void sessionClosed(IoSession session) {
        // Print out total number of bytes read from the remote peer.
        System.err.println("Total " + session.getReadBytes() + " byte(s)");
    }

    public void sessionIdle(IoSession session, IdleStatus status) {
        // Close the connection if reader is idle.
        if (status == IdleStatus.READER_IDLE)
            session.close();
    }

    public void messageReceived(IoSession session, Object message) {
        ByteBuffer buf = (ByteBuffer) message;
        // Print out read buffer content.
        while (buf.hasRemaining()) {
            System.out.print((char) buf.get());
        }
        System.out.flush();
    }
}