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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License.
18   *
19   */
20  package org.apache.mina.example.echoserver;
21  
22  import org.apache.mina.core.buffer.IoBuffer;
23  import org.apache.mina.core.service.IoHandler;
24  import org.apache.mina.core.service.IoHandlerAdapter;
25  import org.apache.mina.core.session.IdleStatus;
26  import org.apache.mina.core.session.IoSession;
27  import org.apache.mina.filter.ssl.SslFilter;
28  import org.slf4j.Logger;
29  import org.slf4j.LoggerFactory;
30  
31  /**
32   * {@link IoHandler} implementation for echo server.
33   *
34   * @author The Apache MINA Project (dev@mina.apache.org)
35   * @version $Rev: 671827 $, $Date: 2008-06-26 10:49:48 +0200 (jeu, 26 jun 2008) $,
36   */
37  public class EchoProtocolHandler extends IoHandlerAdapter {
38      private final Logger logger = LoggerFactory.getLogger(getClass());
39      
40      @Override
41      public void sessionCreated(IoSession session) {
42          session.getConfig().setIdleTime(IdleStatus.BOTH_IDLE, 10);
43  
44          // We're going to use SSL negotiation notification.
45          session.setAttribute(SslFilter.USE_NOTIFICATION);
46      }
47  
48      @Override
49      public void sessionClosed(IoSession session) throws Exception {
50          logger.info("CLOSED");
51      }
52  
53      @Override
54      public void sessionOpened(IoSession session) throws Exception {
55          logger.info("OPENED");
56      }
57  
58      @Override
59      public void sessionIdle(IoSession session, IdleStatus status) {
60          logger.info("*** IDLE #" + session.getIdleCount(IdleStatus.BOTH_IDLE) + " ***");
61      }
62  
63      @Override
64      public void exceptionCaught(IoSession session, Throwable cause) {
65          session.close();
66      }
67  
68      @Override
69      public void messageReceived(IoSession session, Object message)
70              throws Exception {
71          // Write the received data back to remote peer
72          session.write(((IoBuffer) message).duplicate());
73      }
74  }