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org.apache.jcs.auxiliary.lateral.socket.tcp.utils.SocketOpener |
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1 | package org.apache.jcs.auxiliary.lateral.socket.tcp.utils; |
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2 | ||
3 | /* |
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4 | * Licensed to the Apache Software Foundation (ASF) under one |
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5 | * or more contributor license agreements. See the NOTICE file |
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6 | * distributed with this work for additional information |
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7 | * regarding copyright ownership. The ASF licenses this file |
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8 | * to you under the Apache License, Version 2.0 (the |
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9 | * "License"); you may not use this file except in compliance |
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10 | * with the License. You may obtain a copy of the License at |
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11 | * |
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12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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13 | * |
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14 | * Unless required by applicable law or agreed to in writing, |
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15 | * software distributed under the License is distributed on an |
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16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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17 | * KIND, either express or implied. See the License for the |
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18 | * specific language governing permissions and limitations |
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19 | * under the License. |
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20 | */ |
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21 | ||
22 | import java.io.IOException; |
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23 | import java.net.Socket; |
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24 | ||
25 | /** |
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26 | * Socket openere that will timeout on the initial connect rather than block |
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27 | * forever. Technique from core java II. |
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28 | * |
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29 | * @version $Id: SocketOpener.java 536904 2007-05-10 16:03:42Z tv $ |
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30 | */ |
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31 | public class SocketOpener |
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32 | implements Runnable |
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33 | { |
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34 | ||
35 | private String host; |
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36 | ||
37 | private int port; |
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38 | ||
39 | private Socket socket; |
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40 | ||
41 | /** |
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42 | * Opens a socket with a connection timeout value. Joins against a backgroud |
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43 | * thread that does the openeing. |
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44 | * |
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45 | * @param host |
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46 | * @param port |
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47 | * @param timeOut |
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48 | * @return Socket |
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49 | */ |
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50 | public static Socket openSocket( String host, int port, class="keyword">int timeOut ) |
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51 | { |
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52 | 34 | SocketOpener opener = new SocketOpener( host, port ); |
53 | 34 | Thread t = new Thread( opener ); |
54 | 34 | t.start(); |
55 | try |
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56 | { |
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57 | 34 | t.join( timeOut ); |
58 | } |
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59 | 0 | catch ( InterruptedException ire ) |
60 | { |
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61 | // swallow |
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62 | 34 | } |
63 | 34 | return opener.getSocket(); |
64 | } |
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65 | ||
66 | /** |
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67 | * Constructor for the SocketOpener object |
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68 | * |
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69 | * @param host |
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70 | * @param port |
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71 | */ |
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72 | public SocketOpener( String host, int port ) |
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73 | 34 | { |
74 | 34 | this.socket = null; |
75 | 34 | this.host = host; |
76 | 34 | this.port = port; |
77 | 34 | } |
78 | ||
79 | /** Main processing method for the SocketOpener object */ |
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80 | public void run() |
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81 | { |
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82 | try |
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83 | { |
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84 | 34 | socket = new Socket( host, port ); |
85 | } |
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86 | 14 | catch ( IOException ioe ) |
87 | { |
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88 | // swallow |
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89 | 20 | } |
90 | 34 | } |
91 | ||
92 | /** |
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93 | * |
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94 | * @return The opened socket |
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95 | */ |
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96 | public Socket getSocket() |
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97 | { |
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98 | 34 | return socket; |
99 | } |
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100 | } |
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