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annotate src/org/eclipse/jetty/server/Connector.java @ 982:dbecd7faa1f5

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author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 16 Oct 2016 21:40:27 -0600
parents 5ee36654b383
children d9cfec64899c
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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 public 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 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 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 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 /* ------------------------------------------------------------ */
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128 /**
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129 * @return Returns the soLingerTime.
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130 */
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131 public int getSoLingerTime()
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132 {
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133 return _soLingerTime;
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134 }
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135
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136 /* ------------------------------------------------------------ */
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137 /**
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138 * @param soLingerTime
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139 * The soLingerTime to set or -1 to disable.
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140 */
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141 public void setSoLingerTime(int soLingerTime)
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142 {
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143 _soLingerTime = soLingerTime;
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144 }
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145
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146 @Override
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147 protected void doStart() throws Exception
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148 {
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149 super.doStart();
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150
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151 // Start selector thread
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152 ThreadPoolExecutor _threadPool = server.threadPool;
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153 _threadPool.execute(this);
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154 if (server.isLowOnThreads())
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155 LOG.warn("insufficient threads configured for {}",this);
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156
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157 LOG.info("Started {}",this);
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158 }
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159
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160 @Override
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161 protected synchronized void doStop() throws Exception
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162 {
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163 try
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164 {
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165 if (_acceptChannel != null)
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166 _acceptChannel.close();
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167 _acceptChannel=null;
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168 }
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169 catch (IOException e)
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170 {
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171 LOG.warn("",e);
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172 }
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173
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174 super.doStop();
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175 }
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176
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177
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178 protected final void configure(Socket socket) throws IOException
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179 {
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180 socket.setTcpNoDelay(true);
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181 if (_soLingerTime >= 0)
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182 socket.setSoLinger(true,_soLingerTime / 1000);
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183 else
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184 socket.setSoLinger(false,0);
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185 }
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186
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187 public void customize(EndPoint endpoint, Request request) throws IOException
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188 {
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189 }
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190
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191 public boolean isConfidential()
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192 {
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193 return false;
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194 }
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195
906
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196 protected abstract void accept() throws IOException, InterruptedException;
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197
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198 public void stopAccept(int acceptorID) throws Exception
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199 {
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200 }
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3428c60d7cfc replace jetty jars with source
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201
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202 public int getRequestBufferSize()
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203 {
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204 return _buffers.getRequestBufferSize();
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205 }
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206
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207 public void setRequestBufferSize(int requestBufferSize)
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208 {
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209 _buffers.setRequestBufferSize(requestBufferSize);
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210 }
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211
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212 public int getRequestHeaderSize()
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213 {
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214 return _buffers.getRequestHeaderSize();
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215 }
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216
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217 public void setRequestHeaderSize(int requestHeaderSize)
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218 {
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219 _buffers.setRequestHeaderSize(requestHeaderSize);
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220 }
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221
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222 public int getResponseBufferSize()
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223 {
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224 return _buffers.getResponseBufferSize();
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225 }
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226
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227 public void setResponseBufferSize(int responseBufferSize)
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228 {
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229 _buffers.setResponseBufferSize(responseBufferSize);
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230 }
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231
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232 public int getResponseHeaderSize()
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233 {
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234 return _buffers.getResponseHeaderSize();
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235 }
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236
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237 public void setResponseHeaderSize(int responseHeaderSize)
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238 {
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diff changeset
239 _buffers.setResponseHeaderSize(responseHeaderSize);
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240 }
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241
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diff changeset
242 public Type getRequestBufferType()
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243 {
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244 return _buffers.getRequestBufferType();
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245 }
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246
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diff changeset
247 public Type getRequestHeaderType()
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248 {
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diff changeset
249 return _buffers.getRequestHeaderType();
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250 }
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251
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diff changeset
252 public Type getResponseBufferType()
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253 {
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254 return _buffers.getResponseBufferType();
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255 }
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256
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diff changeset
257 public Type getResponseHeaderType()
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258 {
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diff changeset
259 return _buffers.getResponseHeaderType();
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260 }
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261
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diff changeset
262 public void setRequestBuffers(Buffers requestBuffers)
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263 {
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diff changeset
264 _buffers.setRequestBuffers(requestBuffers);
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265 }
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266
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diff changeset
267 public void setResponseBuffers(Buffers responseBuffers)
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diff changeset
268 {
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diff changeset
269 _buffers.setResponseBuffers(responseBuffers);
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270 }
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diff changeset
271
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diff changeset
272 public Buffers getRequestBuffers()
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diff changeset
273 {
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diff changeset
274 return _buffers.getRequestBuffers();
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diff changeset
275 }
150092cebf3e remove AbstractConnector
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diff changeset
276
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diff changeset
277 public Buffers getResponseBuffers()
150092cebf3e remove AbstractConnector
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diff changeset
278 {
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diff changeset
279 return _buffers.getResponseBuffers();
150092cebf3e remove AbstractConnector
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diff changeset
280 }
150092cebf3e remove AbstractConnector
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diff changeset
281
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diff changeset
282 public int getMaxBuffers()
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diff changeset
283 {
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diff changeset
284 return _buffers.getMaxBuffers();
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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 @Override
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diff changeset
288 public String toString()
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289 {
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diff changeset
290 return String.format("%s@%s:%d",
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diff changeset
291 getClass().getSimpleName(),
150092cebf3e remove AbstractConnector
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diff changeset
292 getHost()==null?"0.0.0.0":getHost(),
909
c60c1adfac3e simplify connectors
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diff changeset
293 port);
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150092cebf3e remove AbstractConnector
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294 }
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3428c60d7cfc replace jetty jars with source
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295
909
c60c1adfac3e simplify connectors
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296
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
297 public void run()
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150092cebf3e remove AbstractConnector
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diff changeset
298 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
299 Thread current = Thread.currentThread();
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
300 String name = current.getName();
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diff changeset
301 current.setName(name + " Acceptor" + " " + Connector.this);
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150092cebf3e remove AbstractConnector
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diff changeset
302
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
303 try
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150092cebf3e remove AbstractConnector
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diff changeset
304 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
305 while (isRunning() && _acceptChannel != null)
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diff changeset
306 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
307 try
885
150092cebf3e remove AbstractConnector
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diff changeset
308 {
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
309 accept();
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diff changeset
310 }
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
311 catch (EofException e)
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
312 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
313 LOG.trace("",e);
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
314 }
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
315 catch (IOException e)
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diff changeset
316 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
317 LOG.trace("",e);
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 (InterruptedException x)
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 // Connector has been stopped
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
322 LOG.trace("",x);
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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diff changeset
324 catch (Throwable e)
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
325 {
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
326 LOG.warn("",e);
885
150092cebf3e remove AbstractConnector
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diff changeset
327 }
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diff changeset
328 }
954
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
329 }
a021c4c9c244 use just one SelectSet per SelectorManager
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diff changeset
330 finally
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 current.setName(name);
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diff changeset
333 }
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diff changeset
334 }
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diff changeset
335
150092cebf3e remove AbstractConnector
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diff changeset
336 public String getName()
150092cebf3e remove AbstractConnector
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diff changeset
337 {
150092cebf3e remove AbstractConnector
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diff changeset
338 if (_name == null)
909
c60c1adfac3e simplify connectors
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diff changeset
339 _name = (getHost() == null?"0.0.0.0":getHost()) + ":" + port;
885
150092cebf3e remove AbstractConnector
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diff changeset
340 return _name;
150092cebf3e remove AbstractConnector
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341 }
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342
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343 public final boolean isLowResources()
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344 {
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345 return server.isLowOnThreads();
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346 }
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347
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348
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349 // from AbstractNIOConnector
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350
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351 /* ------------------------------------------------------------------------------- */
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352 public boolean getUseDirectBuffers()
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353 {
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354 return getRequestBufferType()==Type.DIRECT;
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355 }
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356
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357 /* ------------------------------------------------------------------------------- */
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358 /**
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359 * @param direct If True (the default), the connector can use NIO direct buffers.
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360 * Some JVMs have memory management issues (bugs) with direct buffers.
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361 */
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362 public void setUseDirectBuffers(boolean direct)
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363 {
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364 _buffers.setRequestBufferType(direct?Type.DIRECT:Type.INDIRECT);
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365 _buffers.setResponseBufferType(direct?Type.DIRECT:Type.INDIRECT);
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366 }
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367
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368
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369 // from child classes
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370
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371 }