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annotate src/org/eclipse/jetty/server/Connector.java @ 996:d9cfec64899c

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simplify Connector
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 18 Oct 2016 21:22:53 -0600
parents 5ee36654b383
children 39154cfa58e4
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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 java.io.IOException;
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22 import java.net.InetAddress;
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23 import java.net.Socket;
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24 import java.net.UnknownHostException;
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25 import java.nio.channels.ServerSocketChannel;
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26 import java.util.concurrent.ThreadPoolExecutor;
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27 import java.util.concurrent.atomic.AtomicLong;
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28
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29 import javax.servlet.ServletRequest;
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30
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31 import org.eclipse.jetty.http.HttpBuffers;
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32 import org.eclipse.jetty.http.HttpBuffersImpl;
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33 import org.eclipse.jetty.http.HttpFields;
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34 import org.eclipse.jetty.http.HttpHeaders;
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35 import org.eclipse.jetty.http.HttpSchemes;
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36 import org.eclipse.jetty.io.Buffers;
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37 import org.eclipse.jetty.io.Buffers.Type;
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38 import org.eclipse.jetty.io.EndPoint;
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39 import org.eclipse.jetty.io.EofException;
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40 import org.eclipse.jetty.util.component.AggregateLifeCycle;
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41 import org.eclipse.jetty.util.component.Dumpable;
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42 import org.slf4j.Logger;
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43 import org.slf4j.LoggerFactory;
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44
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45 /**
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46 * Abstract Connector implementation. This abstract implementation of the Connector interface provides:
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47 * <ul>
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48 * <li>AbstractLifeCycle implementation</li>
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49 * <li>Implementations for connector getters and setters</li>
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50 * <li>Buffer management</li>
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51 * <li>Socket configuration</li>
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52 * <li>Base acceptor thread</li>
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53 * <li>Optional reverse proxy headers checking</li>
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54 * </ul>
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55 */
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56 public abstract class Connector extends AggregateLifeCycle implements HttpBuffers, Dumpable, Runnable
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57 {
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58 private static final Logger LOG = LoggerFactory.getLogger(Connector.class);
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59
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60 private String _name;
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61
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62 public final Server server;
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63 private String _host;
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64 public final int port;
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65
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66 protected final int _maxIdleTime = 200000;
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67 protected int _soLingerTime = -1;
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68
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69 protected final HttpBuffersImpl _buffers = new HttpBuffersImpl();
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70
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71 // from child classes
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72 protected transient ServerSocketChannel _acceptChannel;
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73
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74 protected Connector(Server server,int port) {
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75 this.server = server;
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76 this.port = port;
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77 server.connectors.add(this);
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78 addBean(_buffers);
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79 _buffers.setRequestBufferType(Type.DIRECT);
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80 _buffers.setRequestHeaderType(Type.INDIRECT);
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81 _buffers.setResponseBufferType(Type.DIRECT);
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82 _buffers.setResponseHeaderType(Type.INDIRECT);
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83 }
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84
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85 public final void setHost(String host)
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86 {
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87 _host = host;
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88 }
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89
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90 public final String getHost()
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91 {
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92 return _host;
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93 }
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94
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95 public final int getMaxIdleTime()
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96 {
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97 return _maxIdleTime;
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98 }
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99
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100 /* ------------------------------------------------------------ */
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101 /**
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102 * Set the maximum Idle time for a connection, which roughly translates to the {@link Socket#setSoTimeout(int)} call, although with NIO implementations
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103 * other mechanisms may be used to implement the timeout. The max idle time is applied:
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104 * <ul>
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105 * <li>When waiting for a new request to be received on a connection</li>
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106 * <li>When reading the headers and content of a request</li>
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107 * <li>When writing the headers and content of a response</li>
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108 * </ul>
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109 * Jetty interprets this value as the maximum time between some progress being made on the connection. So if a single byte is read or written, then the
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110 * timeout (if implemented by jetty) is reset. However, in many instances, the reading/writing is delegated to the JVM, and the semantic is more strictly
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111 * enforced as the maximum time a single read/write operation can take. Note, that as Jetty supports writes of memory mapped file buffers, then a write may
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112 * take many 10s of seconds for large content written to a slow device.
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113 * <p>
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114 * Previously, Jetty supported separate idle timeouts and IO operation timeouts, however the expense of changing the value of soTimeout was significant, so
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115 * these timeouts were merged. With the advent of NIO, it may be possible to again differentiate these values (if there is demand).
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116 *
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117 * @param maxIdleTime
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118 * The maxIdleTime to set.
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119 */
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120 /*
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121 public void setMaxIdleTime(int maxIdleTime)
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122 {
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123 _maxIdleTime = maxIdleTime;
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124 }
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125 */
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126
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127 public final int getSoLingerTime()
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128 {
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129 return _soLingerTime;
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130 }
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131
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132 /* ------------------------------------------------------------ */
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133 /**
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134 * @param soLingerTime
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135 * The soLingerTime to set or -1 to disable.
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136 */
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137 public final void setSoLingerTime(int soLingerTime)
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138 {
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139 _soLingerTime = soLingerTime;
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140 }
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141
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142 @Override
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143 protected void doStart() throws Exception
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144 {
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145 super.doStart();
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146
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147 // Start selector thread
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148 ThreadPoolExecutor _threadPool = server.threadPool;
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149 _threadPool.execute(this);
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150 if (server.isLowOnThreads())
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151 LOG.warn("insufficient threads configured for {}",this);
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152
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153 LOG.info("Started {}",this);
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154 }
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155
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156 @Override
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157 protected synchronized void doStop() throws Exception
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158 {
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159 try
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160 {
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161 if (_acceptChannel != null)
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162 _acceptChannel.close();
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163 _acceptChannel=null;
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164 }
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165 catch (IOException e)
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166 {
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167 LOG.warn("",e);
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168 }
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169
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170 super.doStop();
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171 }
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172
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173
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174 protected final void configure(Socket socket) throws IOException
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175 {
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176 socket.setTcpNoDelay(true);
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177 if (_soLingerTime >= 0)
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178 socket.setSoLinger(true,_soLingerTime / 1000);
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179 else
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180 socket.setSoLinger(false,0);
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181 }
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182
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183 public abstract void customize(EndPoint endpoint, Request request) throws IOException;
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184
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185 public boolean isConfidential()
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186 {
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187 return false;
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188 }
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189
906
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190 protected abstract void accept() throws IOException, InterruptedException;
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191
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192 @Override
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193 public final int getRequestBufferSize()
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194 {
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195 return _buffers.getRequestBufferSize();
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196 }
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197
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198 @Override
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199 public final void setRequestBufferSize(int requestBufferSize)
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200 {
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201 _buffers.setRequestBufferSize(requestBufferSize);
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202 }
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203
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204 @Override
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205 public final int getRequestHeaderSize()
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206 {
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207 return _buffers.getRequestHeaderSize();
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208 }
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209
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210 @Override
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211 public final void setRequestHeaderSize(int requestHeaderSize)
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212 {
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213 _buffers.setRequestHeaderSize(requestHeaderSize);
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214 }
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215
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216 @Override
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217 public final int getResponseBufferSize()
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218 {
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219 return _buffers.getResponseBufferSize();
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220 }
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221
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222 @Override
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223 public final void setResponseBufferSize(int responseBufferSize)
885
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224 {
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225 _buffers.setResponseBufferSize(responseBufferSize);
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226 }
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227
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228 @Override
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229 public final int getResponseHeaderSize()
885
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230 {
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231 return _buffers.getResponseHeaderSize();
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232 }
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233
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234 @Override
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235 public final void setResponseHeaderSize(int responseHeaderSize)
885
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236 {
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237 _buffers.setResponseHeaderSize(responseHeaderSize);
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238 }
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239
996
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240 @Override
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241 public final Type getRequestBufferType()
885
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242 {
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243 return _buffers.getRequestBufferType();
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244 }
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245
996
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246 @Override
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247 public final Type getRequestHeaderType()
885
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248 {
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249 return _buffers.getRequestHeaderType();
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250 }
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251
996
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252 @Override
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diff changeset
253 public final Type getResponseBufferType()
885
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254 {
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255 return _buffers.getResponseBufferType();
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diff changeset
256 }
150092cebf3e remove AbstractConnector
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257
996
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diff changeset
258 @Override
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diff changeset
259 public final Type getResponseHeaderType()
885
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diff changeset
260 {
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diff changeset
261 return _buffers.getResponseHeaderType();
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diff changeset
262 }
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263
996
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diff changeset
264 @Override
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diff changeset
265 public final void setRequestBuffers(Buffers requestBuffers)
885
150092cebf3e remove AbstractConnector
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266 {
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diff changeset
267 _buffers.setRequestBuffers(requestBuffers);
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diff changeset
268 }
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269
996
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diff changeset
270 @Override
d9cfec64899c simplify Connector
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diff changeset
271 public final void setResponseBuffers(Buffers responseBuffers)
885
150092cebf3e remove AbstractConnector
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diff changeset
272 {
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diff changeset
273 _buffers.setResponseBuffers(responseBuffers);
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274 }
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275
996
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diff changeset
276 @Override
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diff changeset
277 public final Buffers getRequestBuffers()
885
150092cebf3e remove AbstractConnector
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diff changeset
278 {
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diff changeset
279 return _buffers.getRequestBuffers();
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diff changeset
280 }
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281
996
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282 @Override
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diff changeset
283 public final Buffers getResponseBuffers()
885
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284 {
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diff changeset
285 return _buffers.getResponseBuffers();
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286 }
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287
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288 @Override
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diff changeset
289 public final int getMaxBuffers()
885
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290 {
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diff changeset
291 return _buffers.getMaxBuffers();
150092cebf3e remove AbstractConnector
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diff changeset
292 }
150092cebf3e remove AbstractConnector
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diff changeset
293
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diff changeset
294 @Override
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diff changeset
295 public String toString()
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diff changeset
296 {
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diff changeset
297 return String.format("%s@%s:%d",
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diff changeset
298 getClass().getSimpleName(),
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299 getHost()==null?"0.0.0.0":getHost(),
909
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diff changeset
300 port);
885
150092cebf3e remove AbstractConnector
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diff changeset
301 }
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3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
302
909
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303
996
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diff changeset
304 @Override
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
305 public void run()
885
150092cebf3e remove AbstractConnector
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diff changeset
306 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
307 Thread current = Thread.currentThread();
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
308 String name = current.getName();
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
309 current.setName(name + " Acceptor" + " " + Connector.this);
885
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diff changeset
310
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
311 try
885
150092cebf3e remove AbstractConnector
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diff changeset
312 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
313 while (isRunning() && _acceptChannel != null)
885
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diff changeset
314 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
315 try
885
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diff changeset
316 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
317 accept();
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
318 }
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
319 catch (EofException e)
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
320 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
321 LOG.trace("",e);
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
322 }
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
323 catch (IOException e)
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
324 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
325 LOG.trace("",e);
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
326 }
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
327 catch (InterruptedException x)
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
328 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
329 // Connector has been stopped
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diff changeset
330 LOG.trace("",x);
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
331 }
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
332 catch (Throwable e)
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
333 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
334 LOG.warn("",e);
885
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diff changeset
335 }
150092cebf3e remove AbstractConnector
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diff changeset
336 }
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
337 }
a021c4c9c244 use just one SelectSet per SelectorManager
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338 finally
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339 {
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340 current.setName(name);
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341 }
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342 }
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343
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344 public final String getName()
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345 {
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346 if (_name == null)
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347 _name = (getHost() == null?"0.0.0.0":getHost()) + ":" + port;
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348 return _name;
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349 }
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350
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351
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352 // from AbstractNIOConnector
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353
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354 public final boolean getUseDirectBuffers()
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355 {
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356 return getRequestBufferType()==Type.DIRECT;
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357 }
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358
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359 /* ------------------------------------------------------------------------------- */
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360 /**
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361 * @param direct If True (the default), the connector can use NIO direct buffers.
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362 * Some JVMs have memory management issues (bugs) with direct buffers.
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363 */
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364 public final void setUseDirectBuffers(boolean direct)
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365 {
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366 _buffers.setRequestBufferType(direct?Type.DIRECT:Type.INDIRECT);
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367 _buffers.setResponseBufferType(direct?Type.DIRECT:Type.INDIRECT);
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368 }
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369
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370 }