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annotate src/org/eclipse/jetty/server/nio/InheritedChannelConnector.java @ 834:175577dab6d8

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remove IPAccessHandler
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 16 Sep 2016 00:51:57 -0600
parents 8e9db0bbf4f9
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.server.nio;
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20
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21 import java.io.IOException;
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22 import java.nio.channels.Channel;
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23 import java.nio.channels.ServerSocketChannel;
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24
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25 import org.slf4j.Logger;
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26 import org.slf4j.LoggerFactory;
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27
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28 /**
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29 * An implementation of the SelectChannelConnector which first tries to
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30 * inherit from a channel provided by the system. If there is no inherited
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31 * channel available, or if the inherited channel provided not usable, then
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32 * it will fall back upon normal ServerSocketChannel creation.
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33 * <p>
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34 * Note that System.inheritedChannel() is only available from Java 1.5 onwards.
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35 * Trying to use this class under Java 1.4 will be the same as using a normal
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36 * SelectChannelConnector.
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37 * <p>
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38 * Use it with xinetd/inetd, to launch an instance of Jetty on demand. The port
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39 * used to access pages on the Jetty instance is the same as the port used to
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40 * launch Jetty.
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41 *
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42 * @author athena
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43 */
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44 public class InheritedChannelConnector extends SelectChannelConnector
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45 {
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46 private static final Logger LOG = LoggerFactory.getLogger(InheritedChannelConnector.class);
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47
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48 /* ------------------------------------------------------------ */
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49 @Override
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50 public void open() throws IOException
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51 {
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52 synchronized(this)
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53 {
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54 try
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55 {
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56 Channel channel = System.inheritedChannel();
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57 if ( channel instanceof ServerSocketChannel )
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58 _acceptChannel = (ServerSocketChannel)channel;
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59 else
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60 LOG.warn("Unable to use System.inheritedChannel() [" +channel+ "]. Trying a new ServerSocketChannel at " + getHost() + ":" + getPort());
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61
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62 if ( _acceptChannel != null )
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63 _acceptChannel.configureBlocking(true);
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64 }
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65 catch(NoSuchMethodError e)
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66 {
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67 LOG.warn("Need at least Java 5 to use socket inherited from xinetd/inetd.");
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68 }
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69
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70 if (_acceptChannel == null)
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71 super.open();
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72 }
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73 }
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74
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75 }