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annotate src/org/eclipse/jetty/server/bio/SocketConnector.java @ 848:22a4e93ed20e

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author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 19 Sep 2016 16:38:36 -0600
parents 8e9db0bbf4f9
children 6b210bb66c63
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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.bio;
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20
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21 import java.io.IOException;
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22 import java.net.InetAddress;
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23 import java.net.ServerSocket;
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24 import java.net.Socket;
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25 import java.net.SocketException;
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26 import java.util.HashSet;
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27 import java.util.Set;
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28
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29 import org.eclipse.jetty.http.HttpException;
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30 import org.eclipse.jetty.io.Buffer;
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31 import org.eclipse.jetty.io.ConnectedEndPoint;
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32 import org.eclipse.jetty.io.Connection;
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33 import org.eclipse.jetty.io.EndPoint;
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34 import org.eclipse.jetty.io.EofException;
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35 import org.eclipse.jetty.io.bio.SocketEndPoint;
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36 import org.eclipse.jetty.server.AbstractConnector;
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37 import org.eclipse.jetty.server.AbstractHttpConnection;
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38 import org.eclipse.jetty.server.BlockingHttpConnection;
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39 import org.eclipse.jetty.server.Request;
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40 import org.eclipse.jetty.util.component.AggregateLifeCycle;
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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 /** Socket Connector.
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47 * This connector implements a traditional blocking IO and threading model.
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48 * Normal JRE sockets are used and a thread is allocated per connection.
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49 * Buffers are managed so that large buffers are only allocated to active connections.
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50 *
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51 * This Connector should only be used if NIO is not available.
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52 *
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53 * @org.apache.xbean.XBean element="bioConnector" description="Creates a BIO based socket connector"
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54 *
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55 *
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56 */
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57 public class SocketConnector extends AbstractConnector
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58 {
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59 private static final Logger LOG = LoggerFactory.getLogger(SocketConnector.class);
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60
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61 protected ServerSocket _serverSocket;
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62 protected final Set<EndPoint> _connections;
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63 protected volatile int _localPort=-1;
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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 SocketConnector()
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70 {
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71 _connections=new HashSet<EndPoint>();
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72 }
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73
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74 /* ------------------------------------------------------------ */
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75 public Object getConnection()
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76 {
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77 return _serverSocket;
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78 }
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79
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80 /* ------------------------------------------------------------ */
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81 public void open() throws IOException
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82 {
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83 // Create a new server socket and set to non blocking mode
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84 if (_serverSocket==null || _serverSocket.isClosed())
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85 _serverSocket= newServerSocket(getHost(),getPort(),getAcceptQueueSize());
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86 _serverSocket.setReuseAddress(getReuseAddress());
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87 _localPort=_serverSocket.getLocalPort();
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88 if (_localPort<=0)
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89 throw new IllegalStateException("port not allocated for "+this);
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90
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91 }
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92
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93 /* ------------------------------------------------------------ */
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94 protected ServerSocket newServerSocket(String host, int port,int backlog) throws IOException
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95 {
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96 ServerSocket ss= host==null?
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97 new ServerSocket(port,backlog):
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98 new ServerSocket(port,backlog,InetAddress.getByName(host));
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99
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100 return ss;
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101 }
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102
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103 /* ------------------------------------------------------------ */
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104 public void close() throws IOException
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105 {
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106 if (_serverSocket!=null)
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107 _serverSocket.close();
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108 _serverSocket=null;
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109 _localPort=-2;
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110 }
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111
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112 /* ------------------------------------------------------------ */
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113 @Override
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114 public void accept(int acceptorID)
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115 throws IOException, InterruptedException
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116 {
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117 Socket socket = _serverSocket.accept();
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118 configure(socket);
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119
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120 ConnectorEndPoint connection=new ConnectorEndPoint(socket);
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121 connection.dispatch();
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122 }
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123
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124 /* ------------------------------------------------------------------------------- */
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125 /**
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126 * Allows subclass to override Conection if required.
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127 */
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128 protected Connection newConnection(EndPoint endpoint)
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129 {
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130 return new BlockingHttpConnection(this, endpoint, getServer());
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131 }
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132
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133 /* ------------------------------------------------------------------------------- */
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134 @Override
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135 public void customize(EndPoint endpoint, Request request)
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136 throws IOException
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137 {
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138 ConnectorEndPoint connection = (ConnectorEndPoint)endpoint;
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139 int lrmit = isLowResources()?_lowResourceMaxIdleTime:_maxIdleTime;
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140 connection.setMaxIdleTime(lrmit);
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141
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142 super.customize(endpoint, request);
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143 }
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144
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145 /* ------------------------------------------------------------------------------- */
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146 public int getLocalPort()
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147 {
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148 return _localPort;
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149 }
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150
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151 /* ------------------------------------------------------------------------------- */
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152 @Override
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153 protected void doStart() throws Exception
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154 {
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155 _connections.clear();
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156 super.doStart();
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157 }
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158
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159 /* ------------------------------------------------------------------------------- */
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160 @Override
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161 protected void doStop() throws Exception
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162 {
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163 super.doStop();
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164 Set<EndPoint> set = new HashSet<EndPoint>();
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165 synchronized(_connections)
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166 {
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167 set.addAll(_connections);
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168 }
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169 for (EndPoint endPoint : set)
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170 {
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171 ConnectorEndPoint connection = (ConnectorEndPoint)endPoint;
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172 connection.close();
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173 }
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174 }
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175
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176 @Override
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177 public void dump(Appendable out, String indent) throws IOException
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178 {
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179 super.dump(out, indent);
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180 Set<EndPoint> connections = new HashSet<EndPoint>();
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181 synchronized (_connections)
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182 {
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183 connections.addAll(_connections);
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184 }
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185 AggregateLifeCycle.dump(out, indent, connections);
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186 }
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187
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188 /* ------------------------------------------------------------------------------- */
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189 /* ------------------------------------------------------------------------------- */
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190 /* ------------------------------------------------------------------------------- */
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191 protected class ConnectorEndPoint extends SocketEndPoint implements Runnable, ConnectedEndPoint
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192 {
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193 volatile Connection _connection;
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194 protected final Socket _socket;
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195
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196 public ConnectorEndPoint(Socket socket) throws IOException
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197 {
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198 super(socket,_maxIdleTime);
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199 _connection = newConnection(this);
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200 _socket=socket;
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201 }
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202
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203 public Connection getConnection()
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204 {
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205 return _connection;
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206 }
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207
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208 public void setConnection(Connection connection)
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209 {
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210 if (_connection!=connection && _connection!=null)
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211 connectionUpgraded(_connection,connection);
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212 _connection=connection;
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213 }
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214
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215 public void dispatch() throws IOException
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216 {
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217 if (getThreadPool()==null || !getThreadPool().dispatch(this))
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218 {
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219 LOG.warn("dispatch failed for {}",_connection);
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220 close();
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221 }
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222 }
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223
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224 @Override
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225 public int fill(Buffer buffer) throws IOException
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226 {
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227 int l = super.fill(buffer);
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228 if (l<0)
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229 {
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230 if (!isInputShutdown())
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231 shutdownInput();
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232 if (isOutputShutdown())
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233 close();
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234 }
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235 return l;
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236 }
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237
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238 @Override
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239 public void close() throws IOException
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240 {
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241 if (_connection instanceof AbstractHttpConnection)
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242 ((AbstractHttpConnection)_connection).getRequest().getAsyncContinuation().cancel();
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243 super.close();
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244 }
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245
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246 public void run()
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247 {
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248 try
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249 {
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250 connectionOpened(_connection);
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251 synchronized(_connections)
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252 {
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253 _connections.add(this);
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254 }
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255
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256 while (isStarted() && !isClosed())
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257 {
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258 if (_connection.isIdle())
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259 {
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260 if (isLowResources())
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261 setMaxIdleTime(getLowResourcesMaxIdleTime());
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262 }
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263
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264 _connection=_connection.handle();
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265 }
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266 }
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267 catch (EofException e)
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268 {
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269 LOG.debug("EOF", e);
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270 try{close();}
820
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271 catch(IOException e2){LOG.trace("",e2);}
802
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272 }
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273 catch (SocketException e)
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274 {
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275 LOG.debug("EOF", e);
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276 try{close();}
820
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277 catch(IOException e2){LOG.trace("",e2);}
802
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278 }
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279 catch (HttpException e)
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280 {
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281 LOG.debug("BAD", e);
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282 try{close();}
820
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283 catch(IOException e2){LOG.trace("",e2);}
802
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284 }
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285 catch(Exception e)
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286 {
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287 LOG.warn("handle failed?",e);
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288 try{close();}
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289 catch(IOException e2){LOG.trace("",e2);}
802
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290 }
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291 finally
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292 {
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293 connectionClosed(_connection);
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294 synchronized(_connections)
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295 {
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296 _connections.remove(this);
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297 }
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298
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299 // wait for client to close, but if not, close ourselves.
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300 try
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301 {
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302 if (!_socket.isClosed())
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303 {
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304 long timestamp=System.currentTimeMillis();
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305 int max_idle=getMaxIdleTime();
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306
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307 _socket.setSoTimeout(getMaxIdleTime());
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308 int c=0;
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309 do
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310 {
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311 c = _socket.getInputStream().read();
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312 }
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313 while (c>=0 && (System.currentTimeMillis()-timestamp)<max_idle);
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314 if (!_socket.isClosed())
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315 _socket.close();
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316 }
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317 }
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318 catch(IOException e)
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319 {
820
8e9db0bbf4f9 remove org.eclipse.jetty.util.log and upgrade slf4j
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diff changeset
320 LOG.trace("",e);
802
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321 }
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322 }
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323 }
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324 }
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325 }