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

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author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 16 Oct 2016 21:40:27 -0600
parents bdb6eb0fbf93
children d9cfec64899c
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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.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.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 /* ------------------------------------------------------------------------------- */
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46 /** Blocking NIO connector.
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47 * This connector uses efficient NIO buffers with a traditional blocking thread model.
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48 * Direct NIO buffers are used and a thread is allocated per connections.
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49 *
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50 * This connector is best used when there are a few very active connections.
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51 *
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52 * @org.apache.xbean.XBean element="blockingNioConnector" description="Creates a blocking NIO based socket connector"
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53 *
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54 *
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55 *
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56 */
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57 public final class BlockingChannelConnector extends Connector
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58 {
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59 private static final Logger LOG = LoggerFactory.getLogger(BlockingChannelConnector.class);
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60
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61 private final Set<BlockingChannelEndPoint> _endpoints = new ConcurrentHashMap<BlockingChannelEndPoint,Boolean>().newKeySet();
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62
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63
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64 /* ------------------------------------------------------------ */
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65 /** Constructor.
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66 *
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67 */
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68 public BlockingChannelConnector(Server server,int port)
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69 {
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70 super(server,port);
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71 }
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72
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73
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74 @Override
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75 protected void doStart() throws Exception
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76 {
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77 // Create a new server socket and set to non blocking mode
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78 _acceptChannel = ServerSocketChannel.open();
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79 _acceptChannel.configureBlocking(true);
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80
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81 // Bind the server socket to the local host and port
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82 InetSocketAddress addr = getHost()==null?new InetSocketAddress(port):new InetSocketAddress(getHost(),port);
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83 _acceptChannel.bind(addr);
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84
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85 super.doStart();
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86 server.threadPool.execute(new Runnable()
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87 {
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88
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89 public void run()
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90 {
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91 while (isRunning())
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92 {
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93 try
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94 {
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95 Thread.sleep(400);
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96 long now = System.currentTimeMillis();
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97 for (BlockingChannelEndPoint endp : _endpoints)
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98 {
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99 endp.checkIdleTimestamp(now);
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100 }
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101 }
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102 catch(InterruptedException e)
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103 {
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104 LOG.trace("",e);
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105 }
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106 catch(Exception e)
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107 {
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108 LOG.warn("",e);
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109 }
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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 @Override
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118 public void accept()
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119 throws IOException, InterruptedException
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120 {
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121 SocketChannel channel = _acceptChannel.accept();
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122 channel.configureBlocking(true);
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123 Socket socket = channel.socket();
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124 configure(socket);
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125
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126 BlockingChannelEndPoint connection = new BlockingChannelEndPoint(channel);
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127 try {
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128 server.threadPool.execute(connection);
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129 } catch(RejectedExecutionException e) {
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130 LOG.warn("dispatch failed for {}",connection._connection);
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131 connection.close();
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132 }
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133 }
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134
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135 @Override
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136 public void customize(EndPoint endpoint, Request request)
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137 throws IOException
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138 {
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139 super.customize(endpoint, request);
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140 endpoint.setMaxIdleTime(_maxIdleTime);
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141 configure(endpoint.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 }
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209 catch (EofException e)
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210 {
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211 LOG.debug("EOF", e);
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212 try{BlockingChannelEndPoint.this.close();}
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213 catch(IOException e2){LOG.trace("",e2);}
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214 }
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215 catch (HttpException e)
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216 {
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217 LOG.debug("BAD", e);
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218 try{close();}
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219 catch(IOException e2){LOG.trace("",e2);}
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220 }
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221 catch(Throwable e)
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222 {
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223 LOG.warn("handle failed",e);
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224 try{close();}
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225 catch(IOException e2){LOG.trace("",e2);}
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226 }
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227 finally
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228 {
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229 _endpoints.remove(this);
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230
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231 // wait for client to close, but if not, close ourselves.
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232 try
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233 {
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234 if (!_socket.isClosed())
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235 {
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236 long timestamp = System.currentTimeMillis();
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237 int max_idle = getMaxIdleTime();
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238
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239 _socket.setSoTimeout(getMaxIdleTime());
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240 int c=0;
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241 do
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242 {
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243 c = _socket.getInputStream().read();
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244 }
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245 while (c>=0 && (System.currentTimeMillis()-timestamp)<max_idle);
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246 if (!_socket.isClosed())
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247 _socket.close();
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248 }
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249 }
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250 catch(IOException e)
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251 {
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252 LOG.trace("",e);
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253 }
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254 }
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255 }
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256
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257 @Override
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258 public String toString()
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259 {
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260 return String.format("BCEP@%x{l(%s)<->r(%s),open=%b,ishut=%b,oshut=%b}-{%s}",
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261 hashCode(),
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262 _socket.getRemoteSocketAddress(),
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263 _socket.getLocalSocketAddress(),
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264 isOpen(),
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265 isInputShutdown(),
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266 isOutputShutdown(),
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267 _connection);
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268 }
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269
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270 }
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271 }