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annotate src/org/eclipse/jetty/server/Connector.java @ 954:a021c4c9c244

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use just one SelectSet per SelectorManager
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 13 Oct 2016 00:54:10 -0600
parents f5aefdc4a81a
children 1094975d013b
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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.Connection;
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39 import org.eclipse.jetty.io.EndPoint;
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40 import org.eclipse.jetty.io.EofException;
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41 import org.eclipse.jetty.util.component.AggregateLifeCycle;
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42 import org.eclipse.jetty.util.component.Dumpable;
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43 import org.slf4j.Logger;
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44 import org.slf4j.LoggerFactory;
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45
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46 /**
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47 * Abstract Connector implementation. This abstract implementation of the Connector interface provides:
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48 * <ul>
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49 * <li>AbstractLifeCycle implementation</li>
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50 * <li>Implementations for connector getters and setters</li>
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51 * <li>Buffer management</li>
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52 * <li>Socket configuration</li>
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53 * <li>Base acceptor thread</li>
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54 * <li>Optional reverse proxy headers checking</li>
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55 * </ul>
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56 */
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57 public abstract class Connector extends AggregateLifeCycle implements HttpBuffers, Dumpable, Runnable
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58 {
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59 private static final Logger LOG = LoggerFactory.getLogger(Connector.class);
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60
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61 private String _name;
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62
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63 public final Server server;
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64 private String _host;
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65 public final int port;
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66
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67 protected final int _maxIdleTime = 200000;
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68 protected int _soLingerTime = -1;
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69
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70 protected final HttpBuffersImpl _buffers = new HttpBuffersImpl();
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71
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72 // from child classes
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73 protected transient ServerSocketChannel _acceptChannel;
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74
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75 public Connector(Server server,int port) {
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76 this.server = server;
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77 this.port = port;
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78 server.connectors.add(this);
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79 addBean(_buffers);
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80 _buffers.setRequestBufferType(Type.DIRECT);
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81 _buffers.setRequestHeaderType(Type.INDIRECT);
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82 _buffers.setResponseBufferType(Type.DIRECT);
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83 _buffers.setResponseHeaderType(Type.INDIRECT);
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84 }
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85
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86 public void setHost(String host)
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87 {
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88 _host = host;
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89 }
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90
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91 public String getHost()
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92 {
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93 return _host;
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94 }
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95
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96 public int getMaxIdleTime()
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97 {
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98 return _maxIdleTime;
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99 }
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100
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101 /* ------------------------------------------------------------ */
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102 /**
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103 * 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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104 * other mechanisms may be used to implement the timeout. The max idle time is applied:
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105 * <ul>
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106 * <li>When waiting for a new request to be received on a connection</li>
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107 * <li>When reading the headers and content of a request</li>
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108 * <li>When writing the headers and content of a response</li>
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109 * </ul>
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110 * 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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111 * 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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112 * 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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113 * take many 10s of seconds for large content written to a slow device.
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114 * <p>
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115 * 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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116 * 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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117 *
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118 * @param maxIdleTime
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119 * The maxIdleTime to set.
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120 */
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121 /*
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122 public void setMaxIdleTime(int maxIdleTime)
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123 {
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124 _maxIdleTime = maxIdleTime;
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125 }
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126 */
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127
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128 /* ------------------------------------------------------------ */
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129 /**
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130 * @return Returns the soLingerTime.
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131 */
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132 public int getSoLingerTime()
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133 {
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134 return _soLingerTime;
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135 }
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136
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137 /* ------------------------------------------------------------ */
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138 /**
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139 * @param soLingerTime
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140 * The soLingerTime to set or -1 to disable.
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141 */
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142 public void setSoLingerTime(int soLingerTime)
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143 {
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144 _soLingerTime = soLingerTime;
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145 }
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146
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147 @Override
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148 protected void doStart() throws Exception
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149 {
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150 super.doStart();
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151
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152 // Start selector thread
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153 ThreadPoolExecutor _threadPool = server.threadPool;
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154 _threadPool.execute(this);
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155 if (server.isLowOnThreads())
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156 LOG.warn("insufficient threads configured for {}",this);
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157
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158 LOG.info("Started {}",this);
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159 }
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160
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161 @Override
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162 protected synchronized void doStop() throws Exception
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163 {
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164 try
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165 {
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166 if (_acceptChannel != null)
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167 _acceptChannel.close();
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168 _acceptChannel=null;
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169 }
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170 catch (IOException e)
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171 {
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172 LOG.warn("",e);
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173 }
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174
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175 super.doStop();
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176 }
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177
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178
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179 protected final void configure(Socket socket) throws IOException
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180 {
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181 socket.setTcpNoDelay(true);
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182 if (_soLingerTime >= 0)
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183 socket.setSoLinger(true,_soLingerTime / 1000);
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184 else
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185 socket.setSoLinger(false,0);
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186 }
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187
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188 public void customize(EndPoint endpoint, Request request) throws IOException
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189 {
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190 }
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191
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192 public void persist(EndPoint endpoint) throws IOException
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193 {
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194 }
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195
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196 public boolean isConfidential(Request request)
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197 {
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198 return false;
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199 }
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200
906
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201 protected abstract void accept() throws IOException, InterruptedException;
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202
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203 public void stopAccept(int acceptorID) throws Exception
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204 {
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205 }
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3428c60d7cfc replace jetty jars with source
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206
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207 public int getRequestBufferSize()
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208 {
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209 return _buffers.getRequestBufferSize();
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210 }
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211
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212 public void setRequestBufferSize(int requestBufferSize)
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213 {
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214 _buffers.setRequestBufferSize(requestBufferSize);
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215 }
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216
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217 public int getRequestHeaderSize()
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218 {
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219 return _buffers.getRequestHeaderSize();
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220 }
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221
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222 public void setRequestHeaderSize(int requestHeaderSize)
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223 {
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diff changeset
224 _buffers.setRequestHeaderSize(requestHeaderSize);
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225 }
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226
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227 public int getResponseBufferSize()
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228 {
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229 return _buffers.getResponseBufferSize();
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230 }
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231
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diff changeset
232 public void setResponseBufferSize(int responseBufferSize)
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233 {
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diff changeset
234 _buffers.setResponseBufferSize(responseBufferSize);
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235 }
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236
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diff changeset
237 public int getResponseHeaderSize()
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238 {
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diff changeset
239 return _buffers.getResponseHeaderSize();
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240 }
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241
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diff changeset
242 public void setResponseHeaderSize(int responseHeaderSize)
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243 {
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diff changeset
244 _buffers.setResponseHeaderSize(responseHeaderSize);
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245 }
150092cebf3e remove AbstractConnector
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246
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diff changeset
247 public Type getRequestBufferType()
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248 {
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diff changeset
249 return _buffers.getRequestBufferType();
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250 }
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251
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diff changeset
252 public Type getRequestHeaderType()
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253 {
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diff changeset
254 return _buffers.getRequestHeaderType();
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diff changeset
255 }
150092cebf3e remove AbstractConnector
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diff changeset
256
150092cebf3e remove AbstractConnector
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diff changeset
257 public Type getResponseBufferType()
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diff changeset
258 {
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diff changeset
259 return _buffers.getResponseBufferType();
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diff changeset
260 }
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diff changeset
261
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diff changeset
262 public Type getResponseHeaderType()
150092cebf3e remove AbstractConnector
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diff changeset
263 {
150092cebf3e remove AbstractConnector
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diff changeset
264 return _buffers.getResponseHeaderType();
150092cebf3e remove AbstractConnector
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diff changeset
265 }
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diff changeset
266
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diff changeset
267 public void setRequestBuffers(Buffers requestBuffers)
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diff changeset
268 {
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diff changeset
269 _buffers.setRequestBuffers(requestBuffers);
150092cebf3e remove AbstractConnector
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diff changeset
270 }
150092cebf3e remove AbstractConnector
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diff changeset
271
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diff changeset
272 public void setResponseBuffers(Buffers responseBuffers)
150092cebf3e remove AbstractConnector
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diff changeset
273 {
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diff changeset
274 _buffers.setResponseBuffers(responseBuffers);
150092cebf3e remove AbstractConnector
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diff changeset
275 }
150092cebf3e remove AbstractConnector
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diff changeset
276
150092cebf3e remove AbstractConnector
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diff changeset
277 public Buffers getRequestBuffers()
150092cebf3e remove AbstractConnector
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diff changeset
278 {
150092cebf3e remove AbstractConnector
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diff changeset
279 return _buffers.getRequestBuffers();
150092cebf3e remove AbstractConnector
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diff changeset
280 }
150092cebf3e remove AbstractConnector
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diff changeset
281
150092cebf3e remove AbstractConnector
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diff changeset
282 public Buffers getResponseBuffers()
150092cebf3e remove AbstractConnector
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diff changeset
283 {
150092cebf3e remove AbstractConnector
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diff changeset
284 return _buffers.getResponseBuffers();
150092cebf3e remove AbstractConnector
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diff changeset
285 }
150092cebf3e remove AbstractConnector
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diff changeset
286
150092cebf3e remove AbstractConnector
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diff changeset
287 public int getMaxBuffers()
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diff changeset
288 {
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diff changeset
289 return _buffers.getMaxBuffers();
150092cebf3e remove AbstractConnector
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diff changeset
290 }
150092cebf3e remove AbstractConnector
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diff changeset
291
150092cebf3e remove AbstractConnector
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diff changeset
292 @Override
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diff changeset
293 public String toString()
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diff changeset
294 {
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diff changeset
295 return String.format("%s@%s:%d",
150092cebf3e remove AbstractConnector
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diff changeset
296 getClass().getSimpleName(),
150092cebf3e remove AbstractConnector
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diff changeset
297 getHost()==null?"0.0.0.0":getHost(),
909
c60c1adfac3e simplify connectors
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diff changeset
298 port);
885
150092cebf3e remove AbstractConnector
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diff changeset
299 }
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
300
909
c60c1adfac3e simplify connectors
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diff changeset
301
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
302 public void run()
885
150092cebf3e remove AbstractConnector
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diff changeset
303 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
304 Thread current = Thread.currentThread();
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
305 String name = current.getName();
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
306 current.setName(name + " Acceptor" + " " + Connector.this);
885
150092cebf3e remove AbstractConnector
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diff changeset
307
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
308 try
885
150092cebf3e remove AbstractConnector
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diff changeset
309 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
310 while (isRunning() && _acceptChannel != null)
885
150092cebf3e remove AbstractConnector
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diff changeset
311 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 948
diff changeset
312 try
885
150092cebf3e remove AbstractConnector
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diff changeset
313 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
314 accept();
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
315 }
a021c4c9c244 use just one SelectSet per SelectorManager
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parents: 948
diff changeset
316 catch (EofException e)
a021c4c9c244 use just one SelectSet per SelectorManager
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parents: 948
diff changeset
317 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
318 LOG.trace("",e);
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
319 }
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
320 catch (IOException e)
a021c4c9c244 use just one SelectSet per SelectorManager
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parents: 948
diff changeset
321 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
322 LOG.trace("",e);
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
323 }
a021c4c9c244 use just one SelectSet per SelectorManager
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parents: 948
diff changeset
324 catch (InterruptedException x)
a021c4c9c244 use just one SelectSet per SelectorManager
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parents: 948
diff changeset
325 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
326 // Connector has been stopped
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
327 LOG.trace("",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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parents: 948
diff changeset
329 catch (Throwable e)
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
330 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
331 LOG.warn("",e);
885
150092cebf3e remove AbstractConnector
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diff changeset
332 }
150092cebf3e remove AbstractConnector
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diff changeset
333 }
954
a021c4c9c244 use just one SelectSet per SelectorManager
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parents: 948
diff changeset
334 }
a021c4c9c244 use just one SelectSet per SelectorManager
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parents: 948
diff changeset
335 finally
a021c4c9c244 use just one SelectSet per SelectorManager
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parents: 948
diff changeset
336 {
a021c4c9c244 use just one SelectSet per SelectorManager
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parents: 948
diff changeset
337 current.setName(name);
885
150092cebf3e remove AbstractConnector
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diff changeset
338 }
150092cebf3e remove AbstractConnector
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diff changeset
339 }
150092cebf3e remove AbstractConnector
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diff changeset
340
150092cebf3e remove AbstractConnector
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diff changeset
341 public String getName()
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342 {
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343 if (_name == null)
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344 _name = (getHost() == null?"0.0.0.0":getHost()) + ":" + port;
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345 return _name;
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346 }
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347
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348 public final boolean isLowResources()
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349 {
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350 return server.isLowOnThreads();
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351 }
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352
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353
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354 // from AbstractNIOConnector
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355
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356 /* ------------------------------------------------------------------------------- */
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357 public boolean getUseDirectBuffers()
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358 {
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359 return getRequestBufferType()==Type.DIRECT;
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360 }
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361
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362 /* ------------------------------------------------------------------------------- */
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363 /**
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364 * @param direct If True (the default), the connector can use NIO direct buffers.
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365 * Some JVMs have memory management issues (bugs) with direct buffers.
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366 */
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367 public void setUseDirectBuffers(boolean direct)
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368 {
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369 _buffers.setRequestBufferType(direct?Type.DIRECT:Type.INDIRECT);
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370 _buffers.setResponseBufferType(direct?Type.DIRECT:Type.INDIRECT);
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371 }
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372
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373
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374 // from child classes
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375
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376 }