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annotate src/org/eclipse/jetty/server/nio/BlockingChannelConnector.java @ 865:6b210bb66c63

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remove ThreadPool
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 02 Oct 2016 20:38:06 -0600
parents 0f53601ea489
children df84a1741687
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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.ConnectedEndPoint;
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35 import org.eclipse.jetty.io.Connection;
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36 import org.eclipse.jetty.io.EndPoint;
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37 import org.eclipse.jetty.io.EofException;
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38 import org.eclipse.jetty.io.nio.ChannelEndPoint;
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39 import org.eclipse.jetty.server.BlockingHttpConnection;
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40 import org.eclipse.jetty.server.Request;
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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 class BlockingChannelConnector extends AbstractNIOConnector
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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 transient ServerSocketChannel _acceptChannel;
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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()
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70 {
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71 }
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72
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73 /* ------------------------------------------------------------ */
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74 public Object getConnection()
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75 {
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76 return _acceptChannel;
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77 }
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78
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79 /* ------------------------------------------------------------ */
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80 /**
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81 * @see org.eclipse.jetty.server.AbstractConnector#doStart()
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82 */
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83 @Override
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84 protected void doStart() throws Exception
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85 {
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86 super.doStart();
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87 getThreadPool().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
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119 /* ------------------------------------------------------------ */
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120 public void open() throws IOException
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121 {
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122 // Create a new server socket and set to non blocking mode
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123 _acceptChannel= ServerSocketChannel.open();
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124 _acceptChannel.configureBlocking(true);
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125
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126 // Bind the server socket to the local host and port
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127 InetSocketAddress addr = getHost()==null?new InetSocketAddress(getPort()):new InetSocketAddress(getHost(),getPort());
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128 _acceptChannel.socket().bind(addr,getAcceptQueueSize());
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129 }
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130
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131 /* ------------------------------------------------------------ */
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132 public void close() throws IOException
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133 {
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134 if (_acceptChannel != null)
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135 _acceptChannel.close();
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136 _acceptChannel=null;
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137 }
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138
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139 /* ------------------------------------------------------------ */
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140 @Override
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141 public void accept(int acceptorID)
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142 throws IOException, InterruptedException
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143 {
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144 SocketChannel channel = _acceptChannel.accept();
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145 channel.configureBlocking(true);
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146 Socket socket=channel.socket();
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147 configure(socket);
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148
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149 BlockingChannelEndPoint connection=new BlockingChannelEndPoint(channel);
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150 connection.dispatch();
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151 }
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152
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153 /* ------------------------------------------------------------------------------- */
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154 @Override
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155 public void customize(EndPoint endpoint, Request request)
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156 throws IOException
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157 {
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158 super.customize(endpoint, request);
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159 endpoint.setMaxIdleTime(_maxIdleTime);
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160 configure(((SocketChannel)endpoint.getTransport()).socket());
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161 }
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162
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163
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164 /* ------------------------------------------------------------------------------- */
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165 public int getLocalPort()
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166 {
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167 if (_acceptChannel==null || !_acceptChannel.isOpen())
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168 return -1;
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169 return _acceptChannel.socket().getLocalPort();
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170 }
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171
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172 /* ------------------------------------------------------------------------------- */
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173 /* ------------------------------------------------------------------------------- */
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174 /* ------------------------------------------------------------------------------- */
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175 private class BlockingChannelEndPoint extends ChannelEndPoint implements Runnable, ConnectedEndPoint
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176 {
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177 private Connection _connection;
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178 private int _timeout;
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179 private volatile long _idleTimestamp;
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180
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181 BlockingChannelEndPoint(ByteChannel channel)
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182 throws IOException
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183 {
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184 super(channel,BlockingChannelConnector.this._maxIdleTime);
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185 _connection = new BlockingHttpConnection(BlockingChannelConnector.this,this,getServer());
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186 }
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187
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188 /* ------------------------------------------------------------ */
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189 /** Get the connection.
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190 * @return the connection
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191 */
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192 public Connection getConnection()
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193 {
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194 return _connection;
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195 }
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196
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197 /* ------------------------------------------------------------ */
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198 public void setConnection(Connection connection)
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199 {
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200 _connection=connection;
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201 }
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202
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203 /* ------------------------------------------------------------ */
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204 public void checkIdleTimestamp(long now)
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205 {
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206 if (_idleTimestamp!=0 && _timeout>0 && now>(_idleTimestamp+_timeout))
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207 {
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208 idleExpired();
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209 }
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210 }
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211
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212 /* ------------------------------------------------------------ */
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213 protected void idleExpired()
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214 {
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215 try
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216 {
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217 super.close();
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218 }
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219 catch (IOException e)
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220 {
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221 LOG.trace("",e);
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222 }
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223 }
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224
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225 /* ------------------------------------------------------------ */
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226 void dispatch() throws IOException
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227 {
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228 try {
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229 getThreadPool().execute(this);
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230 } catch(RejectedExecutionException e) {
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231 LOG.warn("dispatch failed for {}",_connection);
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232 super.close();
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233 }
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234 }
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235
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236 /* ------------------------------------------------------------ */
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237 /**
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238 * @see org.eclipse.jetty.io.nio.ChannelEndPoint#fill(org.eclipse.jetty.io.Buffer)
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239 */
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240 @Override
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241 public int fill(Buffer buffer) throws IOException
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242 {
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243 _idleTimestamp=System.currentTimeMillis();
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244 return super.fill(buffer);
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245 }
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246
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247 /* ------------------------------------------------------------ */
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248 /**
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249 * @see org.eclipse.jetty.io.nio.ChannelEndPoint#flush(org.eclipse.jetty.io.Buffer)
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250 */
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251 @Override
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252 public int flush(Buffer buffer) throws IOException
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253 {
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254 _idleTimestamp=System.currentTimeMillis();
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255 return super.flush(buffer);
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256 }
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257
840
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258 /* ------------------------------------------------------------ */
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259 /**
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260 * @see org.eclipse.jetty.io.nio.ChannelEndPoint#flush(org.eclipse.jetty.io.Buffer, org.eclipse.jetty.io.Buffer, org.eclipse.jetty.io.Buffer)
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261 */
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262 @Override
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diff changeset
263 public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
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264 {
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265 _idleTimestamp=System.currentTimeMillis();
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266 return super.flush(header,buffer,trailer);
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267 }
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268
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269 /* ------------------------------------------------------------ */
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270 public void run()
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271 {
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272 try
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273 {
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274 _timeout=getMaxIdleTime();
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275 connectionOpened(_connection);
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276 _endpoints.add(this);
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277
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278 while (isOpen())
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279 {
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280 _idleTimestamp=System.currentTimeMillis();
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281 if (_connection.isIdle())
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282 {
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283 if (getServer().isLowOnThreads())
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284 {
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285 int lrmit = getLowResourcesMaxIdleTime();
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286 if (lrmit>=0 && _timeout!= lrmit)
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287 {
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288 _timeout=lrmit;
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289 }
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290 }
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291 }
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292 else
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293 {
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294 if (_timeout!=getMaxIdleTime())
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295 {
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296 _timeout=getMaxIdleTime();
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297 }
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298 }
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299
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300 _connection = _connection.handle();
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301
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302 }
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303 }
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304 catch (EofException e)
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305 {
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306 LOG.debug("EOF", e);
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307 try{BlockingChannelEndPoint.this.close();}
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308 catch(IOException e2){LOG.trace("",e2);}
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309 }
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310 catch (HttpException e)
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311 {
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312 LOG.debug("BAD", e);
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313 try{super.close();}
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314 catch(IOException e2){LOG.trace("",e2);}
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315 }
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316 catch(Throwable e)
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317 {
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318 LOG.warn("handle failed",e);
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319 try{super.close();}
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320 catch(IOException e2){LOG.trace("",e2);}
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321 }
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322 finally
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323 {
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324 connectionClosed(_connection);
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325 _endpoints.remove(this);
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326
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327 // wait for client to close, but if not, close ourselves.
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328 try
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329 {
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330 if (!_socket.isClosed())
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331 {
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332 long timestamp=System.currentTimeMillis();
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diff changeset
333 int max_idle=getMaxIdleTime();
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334
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diff changeset
335 _socket.setSoTimeout(getMaxIdleTime());
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diff changeset
336 int c=0;
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diff changeset
337 do
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338 {
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339 c = _socket.getInputStream().read();
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340 }
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diff changeset
341 while (c>=0 && (System.currentTimeMillis()-timestamp)<max_idle);
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342 if (!_socket.isClosed())
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diff changeset
343 _socket.close();
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diff changeset
344 }
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diff changeset
345 }
0f53601ea489 remove ConcurrentHashSet
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346 catch(IOException e)
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347 {
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348 LOG.trace("",e);
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349 }
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350 }
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351 }
802
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352
840
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353 /* ------------------------------------------------------------ */
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354 @Override
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355 public String toString()
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356 {
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357 return String.format("BCEP@%x{l(%s)<->r(%s),open=%b,ishut=%b,oshut=%b}-{%s}",
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358 hashCode(),
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359 _socket.getRemoteSocketAddress(),
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360 _socket.getLocalSocketAddress(),
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361 isOpen(),
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362 isInputShutdown(),
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363 isOutputShutdown(),
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364 _connection);
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365 }
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366
840
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367 }
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368 }