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annotate src/org/eclipse/jetty/server/AsyncContinuation.java @ 935:aa7dc1802d29

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remove ContinuationListener
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 09 Oct 2016 21:15:24 -0600
parents fe461f7cfc8e
children 237ace6e8bc2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 javax.servlet.RequestDispatcher;
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22 import javax.servlet.ServletException;
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23
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24 import java.util.ArrayList;
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25 import java.util.List;
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26
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27 import javax.servlet.ServletContext;
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28 import javax.servlet.ServletRequest;
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29 import javax.servlet.ServletResponse;
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30 import javax.servlet.http.HttpServletRequest;
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31
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32 import org.eclipse.jetty.continuation.Continuation;
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33 import org.eclipse.jetty.io.AsyncEndPoint;
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34 import org.eclipse.jetty.io.EndPoint;
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35 import org.eclipse.jetty.server.handler.ContextHandler;
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36 import org.eclipse.jetty.server.handler.ContextHandler.Context;
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37 import org.eclipse.jetty.util.URIUtil;
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38 import org.slf4j.Logger;
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39 import org.slf4j.LoggerFactory;
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40
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41 /* ------------------------------------------------------------ */
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42 /** Implementation of Continuation interfaces
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43 *
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44 */
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45 public final class AsyncContinuation implements Continuation
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46 {
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47 private static final Logger LOG = LoggerFactory.getLogger(AsyncContinuation.class);
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48
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49 private final static long DEFAULT_TIMEOUT=30000L;
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50
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51 // STATES:
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52 // handling() suspend() unhandle() resume() complete() doComplete()
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53 // startAsync() dispatch()
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54 // IDLE DISPATCHED
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55 // DISPATCHED ASYNCSTARTED UNCOMPLETED
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56 // ASYNCSTARTED ASYNCWAIT REDISPATCHING COMPLETING
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57 // REDISPATCHING REDISPATCHED
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58 // ASYNCWAIT REDISPATCH COMPLETING
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59 // REDISPATCH REDISPATCHED
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60 // REDISPATCHED ASYNCSTARTED UNCOMPLETED
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61 // COMPLETING UNCOMPLETED UNCOMPLETED
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62 // UNCOMPLETED COMPLETED
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63 // COMPLETED
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64 private static final int __IDLE=0; // Idle request
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65 private static final int __DISPATCHED=1; // Request dispatched to filter/servlet
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66 private static final int __UNCOMPLETED=8; // Request is completable
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67 private static final int __COMPLETED=9; // Request is complete
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68
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69 /* ------------------------------------------------------------ */
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70 protected AbstractHttpConnection _connection;
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71
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72 /* ------------------------------------------------------------ */
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73 private int _state;
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74 private volatile long _expireAt;
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75
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76 AsyncContinuation()
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77 {
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78 _state=__IDLE;
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79 }
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80
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81 protected synchronized void setConnection(final AbstractHttpConnection connection)
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82 {
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83 _connection=connection;
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84 }
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85
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86
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87 @Override
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88 public String toString()
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89 {
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90 synchronized (this)
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91 {
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92 return super.toString()+"@"+getStatusString();
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93 }
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94 }
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95
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96 public String getStatusString()
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97 {
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98 synchronized (this)
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99 {
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100 return
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101 ((_state==__IDLE)?"IDLE":
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102 (_state==__DISPATCHED)?"DISPATCHED":
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103 (_state==__UNCOMPLETED)?"UNCOMPLETED":
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104 (_state==__COMPLETED)?"COMPLETE":
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105 ("UNKNOWN?"+_state));
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106 }
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107 }
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108
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109 protected synchronized void handling()
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110 {
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111 switch(_state)
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112 {
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113 case __IDLE:
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114 _state=__DISPATCHED;
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115 return;
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116
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117 default:
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118 throw new IllegalStateException(this.getStatusString());
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119 }
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120 }
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121
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122 /* ------------------------------------------------------------ */
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123 /**
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124 * Signal that the HttpConnection has finished handling the request.
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125 * For blocking connectors, this call may block if the request has
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126 * been suspended (startAsync called).
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127 * @return true if handling is complete, false if the request should
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128 * be handled again (eg because of a resume that happened before unhandle was called)
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129 */
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130 protected synchronized void unhandle()
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131 {
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132 switch(_state)
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133 {
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134 case __DISPATCHED:
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135 _state = __UNCOMPLETED;
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136 return;
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137
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138 default:
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139 throw new IllegalStateException(this.getStatusString());
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140 }
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141 }
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142
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143
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144 protected synchronized void doComplete(Throwable ex)
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145 {
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146 switch(_state)
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147 {
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148 case __UNCOMPLETED:
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149 _state = __COMPLETED;
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150 break;
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151
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152 default:
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153 throw new IllegalStateException(this.getStatusString());
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154 }
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155 }
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156
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157 protected synchronized void recycle()
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158 {
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159 switch(_state)
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160 {
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161 case __DISPATCHED:
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162 throw new IllegalStateException(getStatusString());
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163 default:
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164 _state=__IDLE;
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165 }
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166 cancelTimeout();
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167 }
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168
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169 /* ------------------------------------------------------------ */
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170 protected void cancelTimeout()
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171 {
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172 EndPoint endp=_connection.getEndPoint();
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173 if (endp.isBlocking())
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174 {
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175 synchronized(this)
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176 {
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177 _expireAt=0;
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178 this.notifyAll();
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179 }
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180 }
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181 else
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182 {
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183 }
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184 }
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185
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186 synchronized boolean isUncompleted()
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187 {
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188 return _state==__UNCOMPLETED;
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189 }
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190
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191 public synchronized boolean isComplete()
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192 {
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193 return _state==__COMPLETED;
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194 }
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195
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196 /* ------------------------------------------------------------ */
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197 public Request getBaseRequest()
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198 {
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199 return _connection.getRequest();
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200 }
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201
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202 /* ------------------------------------------------------------ */
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203 public ServletRequest getRequest()
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204 {
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205 return _connection.getRequest();
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206 }
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207
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208 /* ------------------------------------------------------------ */
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209 public ServletResponse getResponse()
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210 {
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211 return _connection.getResponse();
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212 }
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213
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214
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215 /* ------------------------------------------------------------ */
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216 /**
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217 * @see org.eclipse.jetty.continuation.Continuation#getServletResponse()
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218 */
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219 public ServletResponse getServletResponse()
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220 {
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221 return _connection.getResponse();
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222 }
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223
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224 /* ------------------------------------------------------------ */
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225 /**
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226 * @see org.eclipse.jetty.continuation.Continuation#getAttribute(java.lang.String)
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227 */
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228 public Object getAttribute(String name)
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229 {
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230 return _connection.getRequest().getAttribute(name);
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231 }
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232
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233 /* ------------------------------------------------------------ */
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234 /**
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235 * @see org.eclipse.jetty.continuation.Continuation#removeAttribute(java.lang.String)
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236 */
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237 public void removeAttribute(String name)
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238 {
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239 _connection.getRequest().removeAttribute(name);
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240 }
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241
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242 /* ------------------------------------------------------------ */
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243 /**
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244 * @see org.eclipse.jetty.continuation.Continuation#setAttribute(java.lang.String, java.lang.Object)
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245 */
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246 public void setAttribute(String name, Object attribute)
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247 {
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248 _connection.getRequest().setAttribute(name,attribute);
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249 }
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250
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251 }