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.gettingstarted.timeserver;
21
22 import java.util.Date;
23
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
28 /**
29 * The Time Server handler : it return the current date when a message is received,
30 * or close the session if the "quit" message is received.
31 *
32 * @author The Apache MINA Project (dev@mina.apache.org)
33 */
34 public class TimeServerHandler extends IoHandlerAdapter
35 {
36 /**
37 * Trap exceptions.
38 */
39 @Override
40 public void exceptionCaught( IoSession session, Throwable cause ) throws Exception
41 {
42 cause.printStackTrace();
43 }
44
45 /**
46 * If the message is 'quit', we exit by closing the session. Otherwise,
47 * we return the current date.
48 */
49 @Override
50 public void messageReceived( IoSession session, Object message ) throws Exception
51 {
52 String str = message.toString();
53
54 if( str.trim().equalsIgnoreCase("quit") ) {
55 // "Quit" ? let's get out ...
56 session.close(true);
57 return;
58 }
59
60 // Send the current date back to the client
61 Date date = new Date();
62 session.write( date.toString() );
63 System.out.println("Message written...");
64 }
65
66 /**
67 * On idle, we just write a message on the console
68 */
69 @Override
70 public void sessionIdle( IoSession session, IdleStatus status ) throws Exception
71 {
72 System.out.println( "IDLE " + session.getIdleCount( status ));
73 }
74 }