Java tutorial
package com.myftpserver.listener; import com.myftpserver.handler.FtpSessionHandler; import org.apache.logging.log4j.Logger; import io.netty.channel.Channel; import io.netty.channel.ChannelFuture; import io.netty.channel.ChannelFutureListener; /* * Copyright 2004-2005 the original author or authors. * * Licensed 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. */ /** * * @author SITO3 * */ public class SessionClosureListener implements ChannelFutureListener { private Channel ch; private Logger logger = null; private FtpSessionHandler fs = null; private String remoteIp = new String(), ftpMessage = new String(); /** * It is triggered when an user close connection<br> * It will sent a good bye message to client and then close the connection * @param fs FTP session * @param ch The channel that the FTP session resided * @param logger Message logger * @param remoteIp Client IP Address * @param goodByeMsg Good bye message */ public SessionClosureListener(FtpSessionHandler fs, Channel ch, Logger logger, String remoteIp, String goodByeMsg) { this.logger = logger; this.remoteIp = remoteIp; this.ftpMessage = goodByeMsg; this.fs = fs; this.ch = ch; } @Override public void operationComplete(ChannelFuture arg0) throws Exception { logger.info("Message:" + ftpMessage + " sent to:" + remoteIp); if (fs != null) { fs.close(); fs = null; } else { this.ch.close(); this.ch = null; } } }