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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.tennis;
21  
22  import org.apache.mina.common.IoHandler;
23  import org.apache.mina.common.IoHandlerAdapter;
24  import org.apache.mina.common.IoSession;
25  
26  /**
27   * A {@link IoHandler} implementation which plays a tennis game.
28   * 
29   * @author The Apache Directory Project (mina-dev@directory.apache.org)
30   * @version $Rev: 555855 $, $Date: 2007-07-13 12:19:00 +0900 (금, 13  7월 2007) $
31   */
32  public class TennisPlayer extends IoHandlerAdapter {
33      private static int nextId = 0;
34  
35      /** Player ID **/
36      private final int id = nextId++;
37  
38      public void sessionOpened(IoSession session) {
39          System.out.println("Player-" + id + ": READY");
40      }
41  
42      public void sessionClosed(IoSession session) {
43          System.out.println("Player-" + id + ": QUIT");
44      }
45  
46      public void messageReceived(IoSession session, Object message) {
47          System.out.println("Player-" + id + ": RCVD " + message);
48  
49          TennisBall ball = (TennisBall) message;
50  
51          // Stroke: TTL decreases and PING/PONG state changes.
52          ball = ball.stroke();
53  
54          if (ball.getTTL() > 0) {
55              // If the ball is still alive, pass it back to peer.
56              session.write(ball);
57          } else {
58              // If the ball is dead, this player loses.
59              System.out.println("Player-" + id + ": LOSE");
60              session.close();
61          }
62      }
63  
64      public void messageSent(IoSession session, Object message) {
65          System.out.println("Player-" + id + ": SENT " + message);
66      }
67  
68      public void exceptionCaught(IoSession session, Throwable cause) {
69          cause.printStackTrace();
70          session.close();
71      }
72  }