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.core.service.IoHandler;
23 import org.apache.mina.core.service.IoHandlerAdapter;
24 import org.apache.mina.core.session.IoSession;
25
26 /**
27 * A {@link IoHandler} implementation which plays a tennis game.
28 *
29 * @author The Apache MINA Project (dev@mina.apache.org)
30 */
31 public class TennisPlayer extends IoHandlerAdapter {
32 private static int nextId = 0;
33
34 /** Player ID **/
35 private final int id = nextId++;
36
37 @Override
38 public void sessionOpened(IoSession session) {
39 System.out.println("Player-" + id + ": READY");
40 }
41
42 @Override
43 public void sessionClosed(IoSession session) {
44 System.out.println("Player-" + id + ": QUIT");
45 }
46
47 @Override
48 public void messageReceived(IoSession session, Object message) {
49 System.out.println("Player-" + id + ": RCVD " + message);
50
51 TennisBall ball = (TennisBall) message;
52
53 // Stroke: TTL decreases and PING/PONG state changes.
54 ball = ball.stroke();
55
56 if (ball.getTTL() > 0) {
57 // If the ball is still alive, pass it back to peer.
58 session.write(ball);
59 } else {
60 // If the ball is dead, this player loses.
61 System.out.println("Player-" + id + ": LOSE");
62 session.close(true);
63 }
64 }
65
66 @Override
67 public void messageSent(IoSession session, Object message) {
68 System.out.println("Player-" + id + ": SENT " + message);
69 }
70
71 @Override
72 public void exceptionCaught(IoSession session, Throwable cause) {
73 cause.printStackTrace();
74 session.close(true);
75 }
76 }