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annotate src/org/eclipse/jetty/server/Connector.java @ 1005:0e96ce3db20a

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remove HttpBuffers
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 23 Oct 2016 02:42:05 -0600
parents 39154cfa58e4
children 58a9c4a42292
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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.HttpBuffersImpl;
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32 import org.eclipse.jetty.http.HttpFields;
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33 import org.eclipse.jetty.http.HttpHeaders;
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34 import org.eclipse.jetty.http.HttpSchemes;
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35 import org.eclipse.jetty.io.Buffers;
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36 import org.eclipse.jetty.io.Buffers.Type;
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37 import org.eclipse.jetty.io.EndPoint;
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38 import org.eclipse.jetty.io.EofException;
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39 import org.eclipse.jetty.util.component.AggregateLifeCycle;
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40 import org.eclipse.jetty.util.component.Dumpable;
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41 import org.slf4j.Logger;
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42 import org.slf4j.LoggerFactory;
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43
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44 /**
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45 * Abstract Connector implementation. This abstract implementation of the Connector interface provides:
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46 * <ul>
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47 * <li>AbstractLifeCycle implementation</li>
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48 * <li>Implementations for connector getters and setters</li>
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49 * <li>Buffer management</li>
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50 * <li>Socket configuration</li>
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51 * <li>Base acceptor thread</li>
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52 * <li>Optional reverse proxy headers checking</li>
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53 * </ul>
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54 */
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55 public abstract class Connector extends AggregateLifeCycle implements Dumpable, Runnable
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56 {
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57 private static final Logger LOG = LoggerFactory.getLogger(Connector.class);
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58
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59 private String _name;
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60
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61 public final Server server;
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62 private String _host;
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63 public final int port;
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64
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65 protected final int _maxIdleTime = 200000;
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66 protected int _soLingerTime = -1;
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67
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68 protected final HttpBuffersImpl _buffers = new HttpBuffersImpl();
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69
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70 // from child classes
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71 protected transient ServerSocketChannel _acceptChannel;
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72
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73 protected Connector(Server server,int port) {
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74 this.server = server;
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75 this.port = port;
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76 server.connectors.add(this);
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77 addBean(_buffers);
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78 _buffers.setRequestBufferType(Type.DIRECT);
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79 _buffers.setRequestHeaderType(Type.INDIRECT);
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80 _buffers.setResponseBufferType(Type.DIRECT);
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81 _buffers.setResponseHeaderType(Type.INDIRECT);
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82 }
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83
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84 public final void setHost(String host)
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85 {
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86 _host = host;
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87 }
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88
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89 public final String getHost()
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90 {
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91 return _host;
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92 }
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93
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94 public final int getMaxIdleTime()
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95 {
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96 return _maxIdleTime;
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97 }
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98
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99 /* ------------------------------------------------------------ */
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100 /**
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101 * 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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102 * other mechanisms may be used to implement the timeout. The max idle time is applied:
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103 * <ul>
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104 * <li>When waiting for a new request to be received on a connection</li>
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105 * <li>When reading the headers and content of a request</li>
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106 * <li>When writing the headers and content of a response</li>
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107 * </ul>
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108 * 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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109 * 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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110 * 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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111 * take many 10s of seconds for large content written to a slow device.
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112 * <p>
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113 * 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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114 * 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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115 *
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116 * @param maxIdleTime
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117 * The maxIdleTime to set.
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118 */
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119
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120 public final int getSoLingerTime()
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121 {
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122 return _soLingerTime;
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123 }
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124
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125 /* ------------------------------------------------------------ */
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126 /**
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127 * @param soLingerTime
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128 * The soLingerTime to set or -1 to disable.
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129 */
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130 public final void setSoLingerTime(int soLingerTime)
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131 {
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132 _soLingerTime = soLingerTime;
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133 }
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134
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135 @Override
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136 protected void doStart() throws Exception
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137 {
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138 super.doStart();
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139
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140 // Start selector thread
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141 ThreadPoolExecutor _threadPool = server.threadPool;
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142 _threadPool.execute(this);
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143 if (server.isLowOnThreads())
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144 LOG.warn("insufficient threads configured for {}",this);
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145
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146 LOG.info("Started {}",this);
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147 }
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148
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149 @Override
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150 protected synchronized void doStop() throws Exception
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151 {
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152 try
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153 {
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154 if (_acceptChannel != null)
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155 _acceptChannel.close();
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156 _acceptChannel=null;
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157 }
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158 catch (IOException e)
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159 {
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160 LOG.warn("",e);
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161 }
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162
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163 super.doStop();
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164 }
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165
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166
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167 protected final void configure(Socket socket) throws IOException
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168 {
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169 socket.setTcpNoDelay(true);
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170 if (_soLingerTime >= 0)
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171 socket.setSoLinger(true,_soLingerTime / 1000);
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172 else
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173 socket.setSoLinger(false,0);
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174 }
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175
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176 public abstract void customize(AbstractHttpConnection con) throws IOException;
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177
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178 public boolean isConfidential()
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179 {
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180 return false;
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181 }
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182
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183 protected abstract void accept() throws IOException, InterruptedException;
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184
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185 @Override
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186 public String toString()
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187 {
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188 return String.format("%s@%s:%d",
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189 getClass().getSimpleName(),
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190 getHost()==null?"0.0.0.0":getHost(),
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191 port);
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192 }
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193
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194
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195 @Override
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196 public void run()
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197 {
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198 Thread current = Thread.currentThread();
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199 String name = current.getName();
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200 current.setName(name + " Acceptor" + " " + Connector.this);
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201
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202 try
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203 {
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204 while (isRunning() && _acceptChannel != null)
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205 {
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206 try
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207 {
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208 accept();
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209 }
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210 catch (EofException e)
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211 {
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212 LOG.trace("",e);
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213 }
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214 catch (IOException e)
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215 {
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216 LOG.trace("",e);
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217 }
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218 catch (InterruptedException x)
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219 {
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220 // Connector has been stopped
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221 LOG.trace("",x);
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222 }
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223 catch (Throwable e)
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224 {
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225 LOG.warn("",e);
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226 }
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227 }
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228 }
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229 finally
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230 {
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231 current.setName(name);
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232 }
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233 }
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234
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235 public final String getName()
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236 {
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237 if (_name == null)
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238 _name = (getHost() == null?"0.0.0.0":getHost()) + ":" + port;
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239 return _name;
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240 }
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241
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242
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243 // from AbstractNIOConnector
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244
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245 public final boolean getUseDirectBuffers()
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246 {
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247 return _buffers.getRequestBufferType()==Type.DIRECT;
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248 }
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249
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250 /* ------------------------------------------------------------------------------- */
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251 /**
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252 * @param direct If True (the default), the connector can use NIO direct buffers.
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253 * Some JVMs have memory management issues (bugs) with direct buffers.
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254 */
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255 public final void setUseDirectBuffers(boolean direct)
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256 {
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257 _buffers.setRequestBufferType(direct?Type.DIRECT:Type.INDIRECT);
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258 _buffers.setResponseBufferType(direct?Type.DIRECT:Type.INDIRECT);
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259 }
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260
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261 }