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annotate src/org/eclipse/jetty/server/nio/BlockingChannelConnector.java @ 1032:eca26899c4bc

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minor
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 03 Nov 2016 03:19:50 -0600
parents 0e96ce3db20a
children 2b769da7f67d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.server.nio;
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20
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21 import java.io.IOException;
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22 import java.net.InetSocketAddress;
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23 import java.net.Socket;
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24 import java.nio.channels.ByteChannel;
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25 import java.nio.channels.SelectionKey;
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26 import java.nio.channels.ServerSocketChannel;
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27 import java.nio.channels.SocketChannel;
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28 import java.util.Set;
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29 import java.util.concurrent.ConcurrentHashMap;
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30 import java.util.concurrent.RejectedExecutionException;
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31
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32 import org.eclipse.jetty.http.HttpException;
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33 import org.eclipse.jetty.io.Buffer;
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34 import org.eclipse.jetty.io.EndPoint;
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35 import org.eclipse.jetty.io.EofException;
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36 import org.eclipse.jetty.io.nio.ChannelEndPoint;
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37 import org.eclipse.jetty.server.BlockingHttpConnection;
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38 import org.eclipse.jetty.server.Connector;
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39 import org.eclipse.jetty.server.Request;
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40 import org.eclipse.jetty.server.Server;
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41 import org.eclipse.jetty.server.AbstractHttpConnection;
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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 /* ------------------------------------------------------------------------------- */
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47 /** Blocking NIO connector.
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48 * This connector uses efficient NIO buffers with a traditional blocking thread model.
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49 * Direct NIO buffers are used and a thread is allocated per connections.
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50 *
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51 * This connector is best used when there are a few very active connections.
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52 *
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53 * @org.apache.xbean.XBean element="blockingNioConnector" description="Creates a blocking NIO based socket connector"
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54 *
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55 *
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56 *
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57 */
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58 public final class BlockingChannelConnector extends Connector
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59 {
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60 private static final Logger LOG = LoggerFactory.getLogger(BlockingChannelConnector.class);
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61
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62 private final Set<BlockingChannelEndPoint> _endpoints = new ConcurrentHashMap<BlockingChannelEndPoint,Boolean>().newKeySet();
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63
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64
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65 /* ------------------------------------------------------------ */
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66 /** Constructor.
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67 *
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68 */
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69 public BlockingChannelConnector(Server server,int port)
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70 {
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71 super(server,port);
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72 }
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73
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74
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75 @Override
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76 protected void doStart() throws Exception
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77 {
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78 // Create a new server socket and set to non blocking mode
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79 _acceptChannel = ServerSocketChannel.open();
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80 _acceptChannel.configureBlocking(true);
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81
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82 // Bind the server socket to the local host and port
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83 InetSocketAddress addr = getHost()==null?new InetSocketAddress(port):new InetSocketAddress(getHost(),port);
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84 _acceptChannel.bind(addr);
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85
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86 super.doStart();
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87 server.threadPool.execute(new Runnable()
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88 {
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89
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90 public void run()
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91 {
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92 while (isRunning())
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93 {
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94 try
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95 {
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96 Thread.sleep(400);
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97 long now = System.currentTimeMillis();
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98 for (BlockingChannelEndPoint endp : _endpoints)
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99 {
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100 endp.checkIdleTimestamp(now);
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101 }
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102 }
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103 catch(InterruptedException e)
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104 {
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105 LOG.trace("",e);
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106 }
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107 catch(Exception e)
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108 {
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109 LOG.warn("",e);
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110 }
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111 }
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112 }
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113
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114 });
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115
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116 }
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117
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118 @Override
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119 public void accept()
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120 throws IOException, InterruptedException
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121 {
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122 SocketChannel channel = _acceptChannel.accept();
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123 channel.configureBlocking(true);
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124 Socket socket = channel.socket();
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125 configure(socket);
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126
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127 BlockingChannelEndPoint endp = new BlockingChannelEndPoint(channel);
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128 try {
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129 server.threadPool.execute(endp);
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130 } catch(RejectedExecutionException e) {
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131 LOG.warn("dispatch failed for {}",endp._connection);
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132 endp.close();
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133 }
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134 }
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135
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136 @Override
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137 public void customize(AbstractHttpConnection con)
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138 throws IOException
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139 {
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140 con._endp.setMaxIdleTime(_maxIdleTime);
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141 configure(con._endp.getChannel().socket());
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142 }
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143
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144
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145 private class BlockingChannelEndPoint extends ChannelEndPoint implements Runnable
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146 {
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147 private final BlockingHttpConnection _connection;
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148 private int _timeout;
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149 private volatile long _idleTimestamp;
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150
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151 BlockingChannelEndPoint(SocketChannel channel)
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152 throws IOException
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153 {
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154 super(channel,BlockingChannelConnector.this._maxIdleTime);
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155 _connection = new BlockingHttpConnection(BlockingChannelConnector.this,this);
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156 }
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157
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158 private void checkIdleTimestamp(long now)
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159 {
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160 if (_idleTimestamp!=0 && _timeout>0 && now>(_idleTimestamp+_timeout))
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161 {
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162 try
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163 {
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164 close();
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165 }
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166 catch (IOException e)
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167 {
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168 LOG.trace("",e);
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169 }
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170 }
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171 }
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172
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173 @Override
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174 public int fill(Buffer buffer) throws IOException
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175 {
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176 _idleTimestamp = System.currentTimeMillis();
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177 return super.fill(buffer);
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178 }
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179
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180 @Override
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181 public int flush(Buffer buffer) throws IOException
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182 {
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183 _idleTimestamp = System.currentTimeMillis();
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184 return super.flush(buffer);
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185 }
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186
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187 @Override
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188 public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
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189 {
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190 _idleTimestamp = System.currentTimeMillis();
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191 return super.flush(header,buffer,trailer);
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192 }
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193
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194 @Override
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195 public void run()
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196 {
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197 try
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198 {
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199 _timeout = getMaxIdleTime();
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200 _endpoints.add(this);
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201 /*
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202 while (isOpen())
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203 {
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204 _idleTimestamp = System.currentTimeMillis();
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205 _connection.handle();
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206 }
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207 */
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208 _idleTimestamp = System.currentTimeMillis();
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209 _connection.handle();
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210 if( isOpen() ) throw new RuntimeException();
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211 }
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212 catch (EofException e)
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213 {
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214 LOG.warn("EOF", e);
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215 // LOG.debug("EOF", e);
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216 try{close();}
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217 catch(IOException e2){LOG.trace("",e2);}
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218 }
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219 catch (HttpException e)
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220 {
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221 LOG.warn("BAD", e);
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222 // LOG.debug("BAD", e);
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223 try{close();}
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224 catch(IOException e2){LOG.trace("",e2);}
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225 }
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226 catch(Throwable e)
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227 {
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228 LOG.warn("handle failed",e);
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229 try{close();}
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230 catch(IOException e2){LOG.trace("",e2);}
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231 }
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232 finally
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233 {
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234 _endpoints.remove(this);
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235
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236 // wait for client to close, but if not, close ourselves.
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237 try
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238 {
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239 if (!_socket.isClosed())
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240 {
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241 long timestamp = System.currentTimeMillis();
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242 int max_idle = getMaxIdleTime();
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243
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244 _socket.setSoTimeout(getMaxIdleTime());
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245 int c=0;
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246 do
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247 {
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248 c = _socket.getInputStream().read();
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249 }
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250 while (c>=0 && (System.currentTimeMillis()-timestamp)<max_idle);
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251 if (!_socket.isClosed())
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252 _socket.close();
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253 }
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254 }
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255 catch(IOException e)
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256 {
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257 LOG.trace("",e);
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258 }
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259 }
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260 }
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261
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262 @Override
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263 public String toString()
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264 {
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265 return String.format("BCEP@%x{l(%s)<->r(%s),open=%b,ishut=%b,oshut=%b}-{%s}",
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266 hashCode(),
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267 _socket.getRemoteSocketAddress(),
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268 _socket.getLocalSocketAddress(),
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269 isOpen(),
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270 isInputShutdown(),
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271 isOutputShutdown(),
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272 _connection);
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273 }
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274
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275 }
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276 }