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annotate src/org/eclipse/jetty/server/nio/BlockingChannelConnector.java @ 906:eaf271fb747f

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minor
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 07 Oct 2016 03:59:44 -0600
parents 94f5d8a62385
children bc4e299de953
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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.eclipse.jetty.server.Server;
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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 AbstractNIOConnector
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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 transient ServerSocketChannel _acceptChannel;
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63 private final Set<BlockingChannelEndPoint> _endpoints = new ConcurrentHashMap<BlockingChannelEndPoint,Boolean>().newKeySet();
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64
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65
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66 /* ------------------------------------------------------------ */
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67 /** Constructor.
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68 *
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69 */
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70 public BlockingChannelConnector(Server server,int port)
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71 {
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72 super(server,port);
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73 }
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74
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75 /* ------------------------------------------------------------ */
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76 public Object getConnection()
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77 {
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78 return _acceptChannel;
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79 }
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80
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81 /* ------------------------------------------------------------ */
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82 /**
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83 * @see org.eclipse.jetty.server.AbstractConnector#doStart()
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84 */
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85 @Override
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86 protected void doStart() throws Exception
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87 {
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88 super.doStart();
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89 server.threadPool.execute(new Runnable()
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90 {
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91
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92 public void run()
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93 {
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94 while (isRunning())
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95 {
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96 try
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97 {
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98 Thread.sleep(400);
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99 long now=System.currentTimeMillis();
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100 for (BlockingChannelEndPoint endp : _endpoints)
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101 {
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102 endp.checkIdleTimestamp(now);
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103 }
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104 }
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105 catch(InterruptedException e)
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106 {
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107 LOG.trace("",e);
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108 }
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109 catch(Exception e)
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110 {
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111 LOG.warn("",e);
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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
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121 /* ------------------------------------------------------------ */
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122 public void open() throws IOException
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123 {
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124 // Create a new server socket and set to non blocking mode
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125 _acceptChannel= ServerSocketChannel.open();
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126 _acceptChannel.configureBlocking(true);
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127
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128 // Bind the server socket to the local host and port
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129 InetSocketAddress addr = getHost()==null?new InetSocketAddress(port):new InetSocketAddress(getHost(),port);
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130 _acceptChannel.socket().bind(addr);
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131 }
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132
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133 /* ------------------------------------------------------------ */
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134 public void close() throws IOException
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135 {
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136 if (_acceptChannel != null)
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137 _acceptChannel.close();
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138 _acceptChannel=null;
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139 }
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140
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141 /* ------------------------------------------------------------ */
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142 @Override
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143 public void accept()
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144 throws IOException, InterruptedException
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145 {
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146 SocketChannel channel = _acceptChannel.accept();
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147 channel.configureBlocking(true);
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148 Socket socket=channel.socket();
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149 configure(socket);
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150
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151 BlockingChannelEndPoint connection=new BlockingChannelEndPoint(channel);
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152 connection.dispatch();
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153 }
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154
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155 /* ------------------------------------------------------------------------------- */
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156 @Override
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157 public void customize(EndPoint endpoint, Request request)
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158 throws IOException
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159 {
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160 super.customize(endpoint, request);
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161 endpoint.setMaxIdleTime(_maxIdleTime);
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162 configure(((SocketChannel)endpoint.getTransport()).socket());
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163 }
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164
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165
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166 /* ------------------------------------------------------------------------------- */
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167 public int getLocalPort()
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168 {
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169 if (_acceptChannel==null || !_acceptChannel.isOpen())
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170 return -1;
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171 return _acceptChannel.socket().getLocalPort();
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172 }
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173
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174 /* ------------------------------------------------------------------------------- */
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175 /* ------------------------------------------------------------------------------- */
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176 /* ------------------------------------------------------------------------------- */
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177 private class BlockingChannelEndPoint extends ChannelEndPoint implements Runnable, ConnectedEndPoint
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178 {
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179 private Connection _connection;
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180 private int _timeout;
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181 private volatile long _idleTimestamp;
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182
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183 BlockingChannelEndPoint(ByteChannel channel)
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184 throws IOException
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185 {
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186 super(channel,BlockingChannelConnector.this._maxIdleTime);
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187 _connection = new BlockingHttpConnection(BlockingChannelConnector.this,this,server);
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188 }
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189
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190 /* ------------------------------------------------------------ */
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191 /** Get the connection.
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192 * @return the connection
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193 */
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194 public Connection getConnection()
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195 {
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196 return _connection;
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197 }
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198
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199 /* ------------------------------------------------------------ */
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200 public void setConnection(Connection connection)
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201 {
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202 _connection=connection;
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203 }
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204
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205 /* ------------------------------------------------------------ */
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206 public void checkIdleTimestamp(long now)
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207 {
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208 if (_idleTimestamp!=0 && _timeout>0 && now>(_idleTimestamp+_timeout))
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209 {
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210 idleExpired();
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211 }
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212 }
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213
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214 /* ------------------------------------------------------------ */
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215 protected void idleExpired()
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216 {
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217 try
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218 {
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219 super.close();
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220 }
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221 catch (IOException e)
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222 {
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223 LOG.trace("",e);
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224 }
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225 }
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226
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227 /* ------------------------------------------------------------ */
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228 void dispatch() throws IOException
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229 {
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230 try {
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231 server.threadPool.execute(this);
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232 } catch(RejectedExecutionException e) {
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233 LOG.warn("dispatch failed for {}",_connection);
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234 super.close();
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235 }
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236 }
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237
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238 /* ------------------------------------------------------------ */
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239 /**
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240 * @see org.eclipse.jetty.io.nio.ChannelEndPoint#fill(org.eclipse.jetty.io.Buffer)
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241 */
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242 @Override
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243 public int fill(Buffer buffer) throws IOException
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244 {
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245 _idleTimestamp=System.currentTimeMillis();
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246 return super.fill(buffer);
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247 }
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248
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249 /* ------------------------------------------------------------ */
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250 /**
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251 * @see org.eclipse.jetty.io.nio.ChannelEndPoint#flush(org.eclipse.jetty.io.Buffer)
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252 */
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253 @Override
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254 public int flush(Buffer buffer) throws IOException
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255 {
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256 _idleTimestamp=System.currentTimeMillis();
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257 return super.flush(buffer);
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258 }
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259
840
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260 /* ------------------------------------------------------------ */
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261 /**
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262 * @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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263 */
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264 @Override
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diff changeset
265 public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
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266 {
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267 _idleTimestamp=System.currentTimeMillis();
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268 return super.flush(header,buffer,trailer);
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269 }
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270
840
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271 /* ------------------------------------------------------------ */
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272 public void run()
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273 {
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274 try
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275 {
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276 _timeout=getMaxIdleTime();
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277 _endpoints.add(this);
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278
840
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279 while (isOpen())
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280 {
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281 _idleTimestamp=System.currentTimeMillis();
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282 if (_connection.isIdle())
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283 {
887
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284 if (server.isLowOnThreads())
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285 {
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286 int lrmit = getLowResourcesMaxIdleTime();
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287 if (lrmit>=0 && _timeout!= lrmit)
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288 {
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289 _timeout=lrmit;
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290 }
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291 }
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292 }
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293 else
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294 {
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295 if (_timeout!=getMaxIdleTime())
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296 {
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297 _timeout=getMaxIdleTime();
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298 }
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299 }
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300
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301 _connection = _connection.handle();
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302
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303 }
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304 }
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305 catch (EofException e)
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306 {
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307 LOG.debug("EOF", e);
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diff changeset
308 try{BlockingChannelEndPoint.this.close();}
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309 catch(IOException e2){LOG.trace("",e2);}
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310 }
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311 catch (HttpException e)
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312 {
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313 LOG.debug("BAD", e);
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314 try{super.close();}
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315 catch(IOException e2){LOG.trace("",e2);}
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316 }
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317 catch(Throwable e)
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318 {
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319 LOG.warn("handle failed",e);
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320 try{super.close();}
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321 catch(IOException e2){LOG.trace("",e2);}
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322 }
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323 finally
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324 {
903
94f5d8a62385 remove connectionClosed()
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diff changeset
325 _connection.onClose();
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326 _endpoints.remove(this);
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327
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diff changeset
328 // wait for client to close, but if not, close ourselves.
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329 try
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330 {
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331 if (!_socket.isClosed())
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332 {
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diff changeset
333 long timestamp=System.currentTimeMillis();
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diff changeset
334 int max_idle=getMaxIdleTime();
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335
840
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diff changeset
336 _socket.setSoTimeout(getMaxIdleTime());
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diff changeset
337 int c=0;
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diff changeset
338 do
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diff changeset
339 {
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diff changeset
340 c = _socket.getInputStream().read();
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diff changeset
341 }
0f53601ea489 remove ConcurrentHashSet
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diff changeset
342 while (c>=0 && (System.currentTimeMillis()-timestamp)<max_idle);
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diff changeset
343 if (!_socket.isClosed())
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diff changeset
344 _socket.close();
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345 }
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346 }
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347 catch(IOException e)
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348 {
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349 LOG.trace("",e);
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350 }
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351 }
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352 }
802
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353
840
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354 /* ------------------------------------------------------------ */
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355 @Override
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356 public String toString()
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357 {
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358 return String.format("BCEP@%x{l(%s)<->r(%s),open=%b,ishut=%b,oshut=%b}-{%s}",
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359 hashCode(),
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360 _socket.getRemoteSocketAddress(),
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361 _socket.getLocalSocketAddress(),
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362 isOpen(),
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363 isInputShutdown(),
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364 isOutputShutdown(),
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365 _connection);
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366 }
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367
840
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368 }
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369 }