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annotate src/org/eclipse/jetty/server/Server.java @ 862:2bb375e94f64

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simplify jetty.util.IO
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 02 Oct 2016 05:17:11 -0600
parents 22a4e93ed20e
children e21ca9878a10
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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;
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20
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21 import java.io.IOException;
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22 import java.net.InetSocketAddress;
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23 import java.util.Enumeration;
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24
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25 import javax.servlet.ServletException;
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26 import javax.servlet.http.HttpServletRequest;
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27 import javax.servlet.http.HttpServletResponse;
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28
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29 import org.eclipse.jetty.http.HttpGenerator;
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30 import org.eclipse.jetty.http.HttpURI;
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31 import org.eclipse.jetty.server.handler.HandlerWrapper;
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32 import org.eclipse.jetty.server.nio.SelectChannelConnector;
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33 import org.eclipse.jetty.util.Attributes;
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34 import org.eclipse.jetty.util.AttributesMap;
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35 import org.eclipse.jetty.util.LazyList;
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36 import org.eclipse.jetty.util.MultiException;
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37 import org.eclipse.jetty.util.TypeUtil;
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38 import org.eclipse.jetty.util.URIUtil;
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39 import org.eclipse.jetty.util.component.Destroyable;
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40 import org.eclipse.jetty.util.component.LifeCycle;
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41 import org.slf4j.Logger;
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42 import org.slf4j.LoggerFactory;
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43 import org.eclipse.jetty.util.thread.QueuedThreadPool;
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44 import org.eclipse.jetty.util.thread.ShutdownThread;
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45 import org.eclipse.jetty.util.thread.ThreadPool;
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46
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47 /* ------------------------------------------------------------ */
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48 /** Jetty HTTP Servlet Server.
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49 * This class is the main class for the Jetty HTTP Servlet server.
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50 * It aggregates Connectors (HTTP request receivers) and request Handlers.
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51 * The server is itself a handler and a ThreadPool. Connectors use the ThreadPool methods
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52 * to run jobs that will eventually call the handle method.
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53 *
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54 * @org.apache.xbean.XBean description="Creates an embedded Jetty web server"
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55 */
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56 public class Server extends HandlerWrapper implements Attributes
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57 {
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58 private static final Logger LOG = LoggerFactory.getLogger(Server.class);
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59
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60 private static final String __version;
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61 static
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62 {
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63 if (Server.class.getPackage()!=null &&
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64 "Eclipse.org - Jetty".equals(Server.class.getPackage().getImplementationVendor()) &&
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65 Server.class.getPackage().getImplementationVersion()!=null)
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66 __version=Server.class.getPackage().getImplementationVersion();
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67 else
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68 __version=System.getProperty("jetty.version","8.y.z-SNAPSHOT");
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69 }
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70
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71 private final AttributesMap _attributes = new AttributesMap();
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72 private ThreadPool _threadPool;
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73 private Connector[] _connectors;
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74 private boolean _sendServerVersion = true; //send Server: header
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75 private boolean _sendDateHeader = false; //send Date: header
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76 private int _graceful=0;
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77 private boolean _stopAtShutdown;
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78 private boolean _dumpAfterStart=false;
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79 private boolean _dumpBeforeStop=false;
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80 private boolean _uncheckedPrintWriter=false;
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81
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82
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83 /* ------------------------------------------------------------ */
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84 public Server()
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85 {
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86 setServer(this);
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87 }
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88
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89 /* ------------------------------------------------------------ */
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90 /** Convenience constructor
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91 * Creates server and a {@link SelectChannelConnector} at the passed port.
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92 */
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93 public Server(int port)
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94 {
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95 setServer(this);
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96
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97 Connector connector=new SelectChannelConnector();
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98 connector.setPort(port);
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99 setConnectors(new Connector[]{connector});
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100 }
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101
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102 /* ------------------------------------------------------------ */
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103 /** Convenience constructor
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104 * Creates server and a {@link SelectChannelConnector} at the passed address.
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105 */
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106 public Server(InetSocketAddress addr)
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107 {
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108 setServer(this);
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109
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110 Connector connector=new SelectChannelConnector();
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111 connector.setHost(addr.getHostName());
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112 connector.setPort(addr.getPort());
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113 setConnectors(new Connector[]{connector});
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114 }
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115
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116
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117 /* ------------------------------------------------------------ */
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118 public static String getVersion()
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119 {
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120 return __version;
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121 }
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122
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123 /* ------------------------------------------------------------ */
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124 public boolean getStopAtShutdown()
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125 {
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126 return _stopAtShutdown;
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127 }
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128
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129 /* ------------------------------------------------------------ */
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130 public void setStopAtShutdown(boolean stop)
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131 {
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132 //if we now want to stop
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133 if (stop)
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134 {
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135 //and we weren't stopping before
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136 if (!_stopAtShutdown)
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137 {
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138 //only register to stop if we're already started (otherwise we'll do it in doStart())
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139 if (isStarted())
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140 ShutdownThread.register(this);
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141 }
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142 }
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143 else
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144 ShutdownThread.deregister(this);
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145
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146 _stopAtShutdown=stop;
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147 }
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148
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149 /* ------------------------------------------------------------ */
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150 /**
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151 * @return Returns the connectors.
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152 */
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153 public Connector[] getConnectors()
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154 {
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155 return _connectors;
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156 }
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157
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158 /* ------------------------------------------------------------ */
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159 public void addConnector(Connector connector)
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160 {
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161 setConnectors((Connector[])LazyList.addToArray(getConnectors(), connector, Connector.class));
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162 }
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163
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164 /* ------------------------------------------------------------ */
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165 /**
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166 * Conveniance method which calls {@link #getConnectors()} and {@link #setConnectors(Connector[])} to
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167 * remove a connector.
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168 * @param connector The connector to remove.
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169 */
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170 public void removeConnector(Connector connector) {
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171 setConnectors((Connector[])LazyList.removeFromArray (getConnectors(), connector));
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172 }
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173
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174 /* ------------------------------------------------------------ */
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175 /** Set the connectors for this server.
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176 * Each connector has this server set as it's ThreadPool and its Handler.
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177 * @param connectors The connectors to set.
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178 */
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179 public void setConnectors(Connector[] connectors)
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180 {
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181 if (connectors!=null)
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182 {
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183 for (int i=0;i<connectors.length;i++)
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184 connectors[i].setServer(this);
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185 }
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186
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187 _connectors = connectors;
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188 }
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189
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190 /* ------------------------------------------------------------ */
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191 /**
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192 * @return Returns the threadPool.
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193 */
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194 public ThreadPool getThreadPool()
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195 {
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196 return _threadPool;
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197 }
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198
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199 /* ------------------------------------------------------------ */
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200 /**
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201 * @param threadPool The threadPool to set.
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202 */
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203 public void setThreadPool(ThreadPool threadPool)
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204 {
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205 if (_threadPool!=null)
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206 removeBean(_threadPool);
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207 _threadPool = threadPool;
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208 if (_threadPool!=null)
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209 addBean(_threadPool);
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210 }
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211
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212 /**
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213 * @return true if {@link #dumpStdErr()} is called after starting
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214 */
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215 public boolean isDumpAfterStart()
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216 {
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217 return _dumpAfterStart;
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218 }
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219
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220 /**
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221 * @param dumpAfterStart true if {@link #dumpStdErr()} is called after starting
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222 */
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223 public void setDumpAfterStart(boolean dumpAfterStart)
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224 {
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225 _dumpAfterStart = dumpAfterStart;
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226 }
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227
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228 /**
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229 * @return true if {@link #dumpStdErr()} is called before stopping
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230 */
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231 public boolean isDumpBeforeStop()
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232 {
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233 return _dumpBeforeStop;
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234 }
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235
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236 /**
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237 * @param dumpBeforeStop true if {@link #dumpStdErr()} is called before stopping
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238 */
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239 public void setDumpBeforeStop(boolean dumpBeforeStop)
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240 {
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241 _dumpBeforeStop = dumpBeforeStop;
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242 }
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243
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244
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245
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246 /* ------------------------------------------------------------ */
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247 @Override
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248 protected void doStart() throws Exception
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249 {
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250 if (getStopAtShutdown())
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251 {
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252 ShutdownThread.register(this);
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253 }
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254
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255 ShutdownMonitor.getInstance().start(); // initialize
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256
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257 LOG.info("jetty-"+__version);
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258 HttpGenerator.setServerVersion(__version);
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259
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260 MultiException mex=new MultiException();
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261
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262 if (_threadPool==null)
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263 setThreadPool(new QueuedThreadPool());
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264
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265 try
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266 {
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267 super.doStart();
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268 }
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269 catch(Throwable e)
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270 {
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271 mex.add(e);
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272 }
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273
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274 if (_connectors!=null && mex.size()==0)
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275 {
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276 for (int i=0;i<_connectors.length;i++)
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277 {
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278 try{_connectors[i].start();}
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279 catch(Throwable e)
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280 {
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281 mex.add(e);
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282 }
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283 }
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284 }
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285
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286 if (isDumpAfterStart())
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287 dumpStdErr();
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288
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289 mex.ifExceptionThrow();
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290 }
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291
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292 /* ------------------------------------------------------------ */
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293 @Override
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294 protected void doStop() throws Exception
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295 {
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296 if (isDumpBeforeStop())
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297 dumpStdErr();
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298
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299 MultiException mex=new MultiException();
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300
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301 if (_graceful>0)
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302 {
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303 if (_connectors!=null)
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304 {
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305 for (int i=_connectors.length;i-->0;)
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306 {
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307 LOG.info("Graceful shutdown {}",_connectors[i]);
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308 try{_connectors[i].close();}catch(Throwable e){mex.add(e);}
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309 }
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310 }
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311
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312 Handler[] contexts = getChildHandlersByClass(Graceful.class);
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313 for (int c=0;c<contexts.length;c++)
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314 {
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315 Graceful context=(Graceful)contexts[c];
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316 LOG.info("Graceful shutdown {}",context);
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317 context.setShutdown(true);
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318 }
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319 Thread.sleep(_graceful);
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320 }
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321
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322 if (_connectors!=null)
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323 {
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324 for (int i=_connectors.length;i-->0;)
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325 try{_connectors[i].stop();}catch(Throwable e){mex.add(e);}
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326 }
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327
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328 try {super.doStop(); } catch(Throwable e) { mex.add(e);}
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329
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330 mex.ifExceptionThrow();
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331
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332 if (getStopAtShutdown())
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333 ShutdownThread.deregister(this);
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334 }
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335
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336 /* ------------------------------------------------------------ */
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337 /* Handle a request from a connection.
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338 * Called to handle a request on the connection when either the header has been received,
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339 * or after the entire request has been received (for short requests of known length), or
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340 * on the dispatch of an async request.
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341 */
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342 public void handle(AbstractHttpConnection connection) throws IOException, ServletException
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343 {
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344 final String target=connection.getRequest().getPathInfo();
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345 final Request request=connection.getRequest();
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346 final Response response=connection.getResponse();
802
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347
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348 if (LOG.isDebugEnabled())
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349 {
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350 LOG.debug("REQUEST "+target+" on "+connection);
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351 handle(target, request, request, response);
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352 LOG.debug("RESPONSE "+target+" "+connection.getResponse().getStatus()+" handled="+request.isHandled());
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353 }
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354 else
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355 handle(target, request, request, response);
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356 }
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357
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358 /* ------------------------------------------------------------ */
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359 /* Handle a request from a connection.
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360 * Called to handle a request on the connection when either the header has been received,
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361 * or after the entire request has been received (for short requests of known length), or
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362 * on the dispatch of an async request.
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363 */
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364 public void handleAsync(AbstractHttpConnection connection) throws IOException, ServletException
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365 {
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366 final AsyncContinuation async = connection.getRequest().getAsyncContinuation();
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367 final AsyncContinuation.AsyncEventState state = async.getAsyncEventState();
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368
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369 final Request baseRequest=connection.getRequest();
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370 final String path=state.getPath();
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371
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372 if (path!=null)
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373 {
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374 // this is a dispatch with a path
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375 final String contextPath=state.getServletContext().getContextPath();
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376 HttpURI uri = new HttpURI(URIUtil.addPaths(contextPath,path));
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377 baseRequest.setUri(uri);
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378 baseRequest.setRequestURI(null);
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379 baseRequest.setPathInfo(baseRequest.getRequestURI());
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380 if (uri.getQuery()!=null)
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381 baseRequest.mergeQueryString(uri.getQuery()); //we have to assume dispatch path and query are UTF8
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382 }
802
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383
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384 final String target=baseRequest.getPathInfo();
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385 final HttpServletRequest request=(HttpServletRequest)async.getRequest();
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386 final HttpServletResponse response=(HttpServletResponse)async.getResponse();
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387
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388 if (LOG.isDebugEnabled())
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389 {
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390 LOG.debug("REQUEST "+target+" on "+connection);
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391 handle(target, baseRequest, request, response);
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392 LOG.debug("RESPONSE "+target+" "+connection.getResponse().getStatus());
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393 }
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394 else
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395 handle(target, baseRequest, request, response);
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396
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397 }
802
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398
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399
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400 /* ------------------------------------------------------------ */
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401 public void join() throws InterruptedException
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402 {
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403 getThreadPool().join();
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404 }
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405
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diff changeset
406 /* ------------------------------------------------------------ */
802
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407
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408 /* ------------------------------------------------------------ */
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409 public void setSendServerVersion (boolean sendServerVersion)
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410 {
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411 _sendServerVersion = sendServerVersion;
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412 }
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413
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414 /* ------------------------------------------------------------ */
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415 public boolean getSendServerVersion()
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416 {
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417 return _sendServerVersion;
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418 }
802
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419
812
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420 /* ------------------------------------------------------------ */
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421 /**
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422 * @param sendDateHeader
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423 */
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424 public void setSendDateHeader(boolean sendDateHeader)
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425 {
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426 _sendDateHeader = sendDateHeader;
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427 }
802
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428
812
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429 /* ------------------------------------------------------------ */
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430 public boolean getSendDateHeader()
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431 {
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432 return _sendDateHeader;
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433 }
802
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434
812
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435 /* ------------------------------------------------------------ */
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436 /**
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diff changeset
437 */
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438 @Deprecated
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439 public int getMaxCookieVersion()
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440 {
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441 return 1;
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442 }
802
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443
812
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444 /* ------------------------------------------------------------ */
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445 /**
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diff changeset
446 */
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447 @Deprecated
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448 public void setMaxCookieVersion(int maxCookieVersion)
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449 {
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450 }
802
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451
812
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452 /* ------------------------------------------------------------ */
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453 /**
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454 * Add a LifeCycle object to be started/stopped
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455 * along with the Server.
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456 * @deprecated Use {@link #addBean(Object)}
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457 * @param c
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458 */
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459 @Deprecated
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diff changeset
460 public void addLifeCycle (LifeCycle c)
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461 {
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462 addBean(c);
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463 }
802
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464
812
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465 /* ------------------------------------------------------------ */
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466 /**
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diff changeset
467 * Add an associated bean.
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diff changeset
468 * The bean will be added to the servers {@link Container}
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diff changeset
469 * and if it is a {@link LifeCycle} instance, it will be
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470 * started/stopped along with the Server. Any beans that are also
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diff changeset
471 * {@link Destroyable}, will be destroyed with the server.
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472 * @param o the bean object to add
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473 */
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474 @Override
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475 public boolean addBean(Object o)
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diff changeset
476 {
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477 if (super.addBean(o))
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diff changeset
478 {
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diff changeset
479 return true;
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diff changeset
480 }
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481 return false;
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diff changeset
482 }
802
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483
812
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diff changeset
484 /**
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diff changeset
485 * Remove a LifeCycle object to be started/stopped
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diff changeset
486 * along with the Server
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diff changeset
487 * @deprecated Use {@link #removeBean(Object)}
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diff changeset
488 */
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diff changeset
489 @Deprecated
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diff changeset
490 public void removeLifeCycle (LifeCycle c)
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diff changeset
491 {
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diff changeset
492 removeBean(c);
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diff changeset
493 }
802
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494
812
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diff changeset
495 /* ------------------------------------------------------------ */
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diff changeset
496 /**
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diff changeset
497 * Remove an associated bean.
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diff changeset
498 */
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diff changeset
499 @Override
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diff changeset
500 public boolean removeBean (Object o)
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diff changeset
501 {
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diff changeset
502 if (super.removeBean(o))
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diff changeset
503 {
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diff changeset
504 return true;
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diff changeset
505 }
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diff changeset
506 return false;
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diff changeset
507 }
802
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diff changeset
508
812
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diff changeset
509 /* ------------------------------------------------------------ */
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diff changeset
510 /*
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diff changeset
511 * @see org.eclipse.util.AttributesMap#clearAttributes()
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diff changeset
512 */
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diff changeset
513 public void clearAttributes()
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diff changeset
514 {
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diff changeset
515 _attributes.clearAttributes();
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diff changeset
516 }
802
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517
812
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diff changeset
518 /* ------------------------------------------------------------ */
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diff changeset
519 /*
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diff changeset
520 * @see org.eclipse.util.AttributesMap#getAttribute(java.lang.String)
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diff changeset
521 */
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diff changeset
522 public Object getAttribute(String name)
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diff changeset
523 {
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diff changeset
524 return _attributes.getAttribute(name);
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diff changeset
525 }
802
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parents:
diff changeset
526
812
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parents: 802
diff changeset
527 /* ------------------------------------------------------------ */
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528 /*
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529 * @see org.eclipse.util.AttributesMap#getAttributeNames()
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530 */
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531 public Enumeration getAttributeNames()
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532 {
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533 return AttributesMap.getAttributeNamesCopy(_attributes);
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534 }
802
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535
812
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536 /* ------------------------------------------------------------ */
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537 /*
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538 * @see org.eclipse.util.AttributesMap#removeAttribute(java.lang.String)
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539 */
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540 public void removeAttribute(String name)
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541 {
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542 _attributes.removeAttribute(name);
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543 }
802
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544
812
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545 /* ------------------------------------------------------------ */
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546 /*
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547 * @see org.eclipse.util.AttributesMap#setAttribute(java.lang.String, java.lang.Object)
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548 */
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549 public void setAttribute(String name, Object attribute)
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550 {
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551 _attributes.setAttribute(name, attribute);
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552 }
802
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553
812
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554 /* ------------------------------------------------------------ */
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555 /**
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556 * @return the graceful
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557 */
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558 public int getGracefulShutdown()
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559 {
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560 return _graceful;
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561 }
802
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562
812
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563 /* ------------------------------------------------------------ */
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564 /**
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565 * Set graceful shutdown timeout. If set, the internal <code>doStop()</code> method will not immediately stop the
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566 * server. Instead, all {@link Connector}s will be closed so that new connections will not be accepted
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567 * and all handlers that implement {@link Graceful} will be put into the shutdown mode so that no new requests
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568 * will be accepted, but existing requests can complete. The server will then wait the configured timeout
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569 * before stopping.
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570 * @param timeoutMS the milliseconds to wait for existing request to complete before stopping the server.
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571 *
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572 */
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573 public void setGracefulShutdown(int timeoutMS)
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574 {
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575 _graceful=timeoutMS;
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576 }
802
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577
812
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578 /* ------------------------------------------------------------ */
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579 @Override
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580 public String toString()
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581 {
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582 return this.getClass().getName()+"@"+Integer.toHexString(hashCode());
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583 }
802
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584
812
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585 /* ------------------------------------------------------------ */
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586 @Override
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587 public void dump(Appendable out,String indent) throws IOException
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588 {
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589 dumpThis(out);
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590 dump(out,indent,TypeUtil.asList(getHandlers()),getBeans(),TypeUtil.asList(_connectors));
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591 }
802
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592
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parents:
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593
812
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594 /* ------------------------------------------------------------ */
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595 public boolean isUncheckedPrintWriter()
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596 {
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597 return _uncheckedPrintWriter;
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598 }
802
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599
812
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diff changeset
600 /* ------------------------------------------------------------ */
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601 public void setUncheckedPrintWriter(boolean unchecked)
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602 {
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603 _uncheckedPrintWriter=unchecked;
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604 }
802
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605
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parents:
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606
812
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607 /* ------------------------------------------------------------ */
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608 /* A handler that can be gracefully shutdown.
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609 * Called by doStop if a {@link #setGracefulShutdown} period is set.
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610 * TODO move this somewhere better
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611 */
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612 public interface Graceful extends Handler
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613 {
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614 public void setShutdown(boolean shutdown);
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615 }
802
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616
812
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617 /* ------------------------------------------------------------ */
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618 public static void main(String...args) throws Exception
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619 {
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620 System.err.println(getVersion());
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diff changeset
621 }
802
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622 }