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annotate src/org/eclipse/jetty/server/nio/BlockingChannelConnector.java @ 909:c60c1adfac3e

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simplify connectors
author Franklin Schmidt <fschmidt@gmail.com>
date Sat, 08 Oct 2016 21:15:28 -0600
parents bc4e299de953
children 17f4fe8271de
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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.Connector;
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41 import org.eclipse.jetty.server.Request;
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42 import org.eclipse.jetty.server.Server;
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43 import org.slf4j.Logger;
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44 import org.slf4j.LoggerFactory;
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45
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46
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47 /* ------------------------------------------------------------------------------- */
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48 /** Blocking NIO connector.
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49 * This connector uses efficient NIO buffers with a traditional blocking thread model.
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50 * Direct NIO buffers are used and a thread is allocated per connections.
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51 *
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52 * This connector is best used when there are a few very active connections.
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53 *
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54 * @org.apache.xbean.XBean element="blockingNioConnector" description="Creates a blocking NIO based socket connector"
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55 *
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56 *
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57 *
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58 */
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59 public final class BlockingChannelConnector extends Connector
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60 {
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61 private static final Logger LOG = LoggerFactory.getLogger(BlockingChannelConnector.class);
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62
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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 @Override
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77 protected void doStart() throws Exception
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78 {
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79 // Create a new server socket and set to non blocking mode
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80 _acceptChannel= ServerSocketChannel.open();
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81 _acceptChannel.configureBlocking(true);
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82
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83 // Bind the server socket to the local host and port
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84 InetSocketAddress addr = getHost()==null?new InetSocketAddress(port):new InetSocketAddress(getHost(),port);
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85 _acceptChannel.bind(addr);
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86
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87 super.doStart();
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88 server.threadPool.execute(new Runnable()
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89 {
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90
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91 public void run()
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92 {
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93 while (isRunning())
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94 {
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95 try
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96 {
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97 Thread.sleep(400);
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98 long now=System.currentTimeMillis();
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99 for (BlockingChannelEndPoint endp : _endpoints)
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100 {
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101 endp.checkIdleTimestamp(now);
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102 }
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103 }
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104 catch(InterruptedException e)
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105 {
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106 LOG.trace("",e);
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107 }
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108 catch(Exception e)
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109 {
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110 LOG.warn("",e);
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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 public void close() throws IOException
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120 {
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121 if (_acceptChannel != null)
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122 _acceptChannel.close();
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123 _acceptChannel=null;
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124 }
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125
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126 @Override
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127 public void accept()
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128 throws IOException, InterruptedException
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129 {
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130 SocketChannel channel = _acceptChannel.accept();
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131 channel.configureBlocking(true);
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132 Socket socket = channel.socket();
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133 configure(socket);
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134
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135 BlockingChannelEndPoint connection=new BlockingChannelEndPoint(channel);
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136 connection.dispatch();
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137 }
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139 @Override
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140 public void customize(EndPoint endpoint, Request request)
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141 throws IOException
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142 {
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143 super.customize(endpoint, request);
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144 endpoint.setMaxIdleTime(_maxIdleTime);
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145 configure(((SocketChannel)endpoint.getTransport()).socket());
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146 }
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147
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148
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149 private class BlockingChannelEndPoint extends ChannelEndPoint implements Runnable, ConnectedEndPoint
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150 {
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151 private Connection _connection;
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152 private int _timeout;
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153 private volatile long _idleTimestamp;
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154
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155 BlockingChannelEndPoint(ByteChannel channel)
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156 throws IOException
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157 {
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158 super(channel,BlockingChannelConnector.this._maxIdleTime);
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159 _connection = new BlockingHttpConnection(BlockingChannelConnector.this,this,server);
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160 }
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161
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162 /* ------------------------------------------------------------ */
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163 /** Get the connection.
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164 * @return the connection
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165 */
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166 public Connection getConnection()
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167 {
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168 return _connection;
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169 }
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170
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171 /* ------------------------------------------------------------ */
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172 public void setConnection(Connection connection)
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173 {
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174 _connection=connection;
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175 }
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176
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177 /* ------------------------------------------------------------ */
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178 public void checkIdleTimestamp(long now)
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179 {
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180 if (_idleTimestamp!=0 && _timeout>0 && now>(_idleTimestamp+_timeout))
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181 {
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182 idleExpired();
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183 }
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184 }
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185
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186 /* ------------------------------------------------------------ */
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187 protected void idleExpired()
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188 {
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189 try
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190 {
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191 super.close();
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192 }
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193 catch (IOException e)
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194 {
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195 LOG.trace("",e);
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196 }
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197 }
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198
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199 /* ------------------------------------------------------------ */
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200 void dispatch() throws IOException
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201 {
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202 try {
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203 server.threadPool.execute(this);
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204 } catch(RejectedExecutionException e) {
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205 LOG.warn("dispatch failed for {}",_connection);
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206 super.close();
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207 }
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208 }
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209
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210 /* ------------------------------------------------------------ */
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211 /**
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212 * @see org.eclipse.jetty.io.nio.ChannelEndPoint#fill(org.eclipse.jetty.io.Buffer)
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213 */
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214 @Override
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215 public int fill(Buffer buffer) throws IOException
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216 {
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217 _idleTimestamp=System.currentTimeMillis();
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218 return super.fill(buffer);
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219 }
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220
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221 /* ------------------------------------------------------------ */
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222 /**
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223 * @see org.eclipse.jetty.io.nio.ChannelEndPoint#flush(org.eclipse.jetty.io.Buffer)
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224 */
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225 @Override
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226 public int flush(Buffer buffer) throws IOException
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227 {
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228 _idleTimestamp=System.currentTimeMillis();
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229 return super.flush(buffer);
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230 }
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231
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232 /* ------------------------------------------------------------ */
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233 /**
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234 * @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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235 */
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236 @Override
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diff changeset
237 public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
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238 {
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239 _idleTimestamp=System.currentTimeMillis();
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240 return super.flush(header,buffer,trailer);
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241 }
802
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242
840
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243 /* ------------------------------------------------------------ */
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diff changeset
244 public void run()
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245 {
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246 try
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247 {
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248 _timeout=getMaxIdleTime();
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249 _endpoints.add(this);
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250
840
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251 while (isOpen())
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252 {
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253 _idleTimestamp=System.currentTimeMillis();
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254 if (_connection.isIdle())
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255 {
887
df84a1741687 make Connector reference to server explicit
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diff changeset
256 if (server.isLowOnThreads())
840
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257 {
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diff changeset
258 int lrmit = getLowResourcesMaxIdleTime();
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259 if (lrmit>=0 && _timeout!= lrmit)
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260 {
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261 _timeout=lrmit;
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262 }
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263 }
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264 }
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diff changeset
265 else
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266 {
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267 if (_timeout!=getMaxIdleTime())
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268 {
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269 _timeout=getMaxIdleTime();
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270 }
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271 }
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272
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273 _connection = _connection.handle();
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274
840
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275 }
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276 }
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diff changeset
277 catch (EofException e)
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278 {
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diff changeset
279 LOG.debug("EOF", e);
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diff changeset
280 try{BlockingChannelEndPoint.this.close();}
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281 catch(IOException e2){LOG.trace("",e2);}
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282 }
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283 catch (HttpException e)
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diff changeset
284 {
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285 LOG.debug("BAD", e);
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diff changeset
286 try{super.close();}
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287 catch(IOException e2){LOG.trace("",e2);}
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288 }
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289 catch(Throwable e)
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290 {
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diff changeset
291 LOG.warn("handle failed",e);
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diff changeset
292 try{super.close();}
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293 catch(IOException e2){LOG.trace("",e2);}
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294 }
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diff changeset
295 finally
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296 {
903
94f5d8a62385 remove connectionClosed()
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diff changeset
297 _connection.onClose();
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298 _endpoints.remove(this);
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299
840
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diff changeset
300 // wait for client to close, but if not, close ourselves.
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diff changeset
301 try
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302 {
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diff changeset
303 if (!_socket.isClosed())
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diff changeset
304 {
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diff changeset
305 long timestamp=System.currentTimeMillis();
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diff changeset
306 int max_idle=getMaxIdleTime();
802
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307
840
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diff changeset
308 _socket.setSoTimeout(getMaxIdleTime());
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diff changeset
309 int c=0;
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diff changeset
310 do
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diff changeset
311 {
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diff changeset
312 c = _socket.getInputStream().read();
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diff changeset
313 }
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diff changeset
314 while (c>=0 && (System.currentTimeMillis()-timestamp)<max_idle);
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diff changeset
315 if (!_socket.isClosed())
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diff changeset
316 _socket.close();
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diff changeset
317 }
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diff changeset
318 }
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diff changeset
319 catch(IOException e)
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diff changeset
320 {
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diff changeset
321 LOG.trace("",e);
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diff changeset
322 }
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diff changeset
323 }
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parents: 820
diff changeset
324 }
802
3428c60d7cfc replace jetty jars with source
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diff changeset
325
840
0f53601ea489 remove ConcurrentHashSet
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diff changeset
326 /* ------------------------------------------------------------ */
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diff changeset
327 @Override
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diff changeset
328 public String toString()
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diff changeset
329 {
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diff changeset
330 return String.format("BCEP@%x{l(%s)<->r(%s),open=%b,ishut=%b,oshut=%b}-{%s}",
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parents: 820
diff changeset
331 hashCode(),
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diff changeset
332 _socket.getRemoteSocketAddress(),
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diff changeset
333 _socket.getLocalSocketAddress(),
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diff changeset
334 isOpen(),
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diff changeset
335 isInputShutdown(),
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parents: 820
diff changeset
336 isOutputShutdown(),
0f53601ea489 remove ConcurrentHashSet
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diff changeset
337 _connection);
0f53601ea489 remove ConcurrentHashSet
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diff changeset
338 }
802
3428c60d7cfc replace jetty jars with source
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parents:
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339
840
0f53601ea489 remove ConcurrentHashSet
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parents: 820
diff changeset
340 }
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
341 }