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annotate src/org/eclipse/jetty/io/nio/ChannelEndPoint.java @ 958:fc521d2f098e

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simplify SelectorManager
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 13 Oct 2016 18:48:20 -0600
parents 220ad4853cda
children 3cd4c706a61f
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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.io.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.net.SocketException;
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25 import java.nio.ByteBuffer;
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26 import java.nio.channels.ByteChannel;
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27 import java.nio.channels.GatheringByteChannel;
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28 import java.nio.channels.SelectableChannel;
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29 import java.nio.channels.SocketChannel;
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30
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31 import org.eclipse.jetty.io.Buffer;
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32 import org.eclipse.jetty.io.EndPoint;
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33 import org.eclipse.jetty.util.StringUtil;
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34 import org.slf4j.Logger;
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35 import org.slf4j.LoggerFactory;
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36
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37 /**
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38 * Channel End Point.
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39 * <p>Holds the channel and socket for an NIO endpoint.
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40 *
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41 */
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42 public class ChannelEndPoint implements EndPoint
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43 {
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44 private static final Logger LOG = LoggerFactory.getLogger(ChannelEndPoint.class);
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45
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46 protected final ByteChannel _channel;
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47 protected final ByteBuffer[] _gather2=new ByteBuffer[2];
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48 protected final Socket _socket;
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49 protected final InetSocketAddress _local;
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50 protected final InetSocketAddress _remote;
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51 protected volatile int _maxIdleTime;
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52 private volatile boolean _ishut;
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53 private volatile boolean _oshut;
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54
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55 public ChannelEndPoint(ByteChannel channel) throws IOException
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56 {
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57 super();
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58 this._channel = channel;
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59 _socket=(channel instanceof SocketChannel)?((SocketChannel)channel).socket():null;
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60 if (_socket!=null)
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61 {
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62 _local=(InetSocketAddress)_socket.getLocalSocketAddress();
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63 _remote=(InetSocketAddress)_socket.getRemoteSocketAddress();
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64 _maxIdleTime=_socket.getSoTimeout();
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65 }
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66 else
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67 {
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68 _local=_remote=null;
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69 }
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70 }
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71
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72 protected ChannelEndPoint(ByteChannel channel, int maxIdleTime) throws IOException
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73 {
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74 this._channel = channel;
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75 _maxIdleTime=maxIdleTime;
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76 _socket=(channel instanceof SocketChannel)?((SocketChannel)channel).socket():null;
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77 if (_socket!=null)
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78 {
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79 _local=(InetSocketAddress)_socket.getLocalSocketAddress();
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80 _remote=(InetSocketAddress)_socket.getRemoteSocketAddress();
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81 _socket.setSoTimeout(_maxIdleTime);
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82 }
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83 else
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84 {
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85 _local=_remote=null;
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86 }
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87 }
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88
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89 public boolean isBlocking()
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90 {
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91 return !(_channel instanceof SelectableChannel) || ((SelectableChannel)_channel).isBlocking();
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92 }
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93
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94 public boolean blockReadable(long millisecs) throws IOException
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95 {
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96 return true;
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97 }
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98
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99 public boolean blockWritable(long millisecs) throws IOException
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100 {
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101 return true;
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102 }
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103
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104 /*
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105 * @see org.eclipse.io.EndPoint#isOpen()
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106 */
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107 public boolean isOpen()
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108 {
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109 return _channel.isOpen();
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110 }
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111
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112 /** Shutdown the channel Input.
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113 * Cannot be overridden. To override, see {@link #shutdownInput()}
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114 * @throws IOException
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115 */
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116 protected final void shutdownChannelInput() throws IOException
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117 {
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118 LOG.debug("ishut {}", this);
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119 _ishut = true;
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120 if (_channel.isOpen())
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121 {
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122 if (_socket != null)
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123 {
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124 try
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125 {
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126 if (!_socket.isInputShutdown())
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127 {
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128 _socket.shutdownInput();
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129 }
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130 }
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131 catch (SocketException e)
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132 {
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133 LOG.debug(e.toString());
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134 LOG.trace("",e);
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135 }
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136 finally
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137 {
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138 if (_oshut)
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139 {
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140 close();
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141 }
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142 }
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143 }
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144 }
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145 }
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146
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147 /* (non-Javadoc)
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148 * @see org.eclipse.io.EndPoint#close()
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149 */
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150 public void shutdownInput() throws IOException
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151 {
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152 shutdownChannelInput();
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153 }
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154
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155 protected final void shutdownChannelOutput() throws IOException
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156 {
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157 LOG.debug("oshut {}",this);
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158 _oshut = true;
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159 if (_channel.isOpen())
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160 {
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161 if (_socket != null)
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162 {
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163 try
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164 {
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165 if (!_socket.isOutputShutdown())
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166 {
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167 _socket.shutdownOutput();
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168 }
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169 }
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170 catch (SocketException e)
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171 {
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172 LOG.debug(e.toString());
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173 LOG.trace("",e);
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174 }
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175 finally
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176 {
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177 if (_ishut)
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178 {
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179 close();
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180 }
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181 }
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182 }
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183 }
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184 }
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185
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186 /* (non-Javadoc)
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187 * @see org.eclipse.io.EndPoint#close()
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188 */
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189 public void shutdownOutput() throws IOException
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190 {
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191 shutdownChannelOutput();
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192 }
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193
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194 public boolean isOutputShutdown()
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195 {
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196 return _oshut || !_channel.isOpen() || _socket != null && _socket.isOutputShutdown();
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197 }
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198
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199 public boolean isInputShutdown()
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200 {
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201 return _ishut || !_channel.isOpen() || _socket != null && _socket.isInputShutdown();
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202 }
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203
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204 /* (non-Javadoc)
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205 * @see org.eclipse.io.EndPoint#close()
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206 */
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207 public void close() throws IOException
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208 {
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209 LOG.debug("close {}",this);
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210 _channel.close();
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211 }
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212
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213 /* (non-Javadoc)
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214 * @see org.eclipse.io.EndPoint#fill(org.eclipse.io.Buffer)
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215 */
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216 public int fill(Buffer buffer) throws IOException
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217 {
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218 if (_ishut)
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219 return -1;
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220 Buffer buf = buffer.buffer();
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221 int len=0;
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222 if (buf instanceof NIOBuffer)
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223 {
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224 final NIOBuffer nbuf = (NIOBuffer)buf;
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225 final ByteBuffer bbuf=nbuf.getByteBuffer();
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226
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227 //noinspection SynchronizationOnLocalVariableOrMethodParameter
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228 try
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229 {
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230 synchronized(bbuf)
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231 {
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232 try
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233 {
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234 bbuf.position(buffer.putIndex());
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235 len=_channel.read(bbuf);
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236 }
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237 finally
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238 {
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239 buffer.setPutIndex(bbuf.position());
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240 bbuf.position(0);
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241 }
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242 }
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243
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244 if (len<0 && isOpen())
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245 {
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246 if (!isInputShutdown())
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247 shutdownInput();
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248 if (isOutputShutdown())
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249 _channel.close();
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250 }
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251 }
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252 catch (IOException x)
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253 {
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254 LOG.debug("Exception while filling", x);
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255 try
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256 {
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257 if (_channel.isOpen())
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258 _channel.close();
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259 }
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260 catch (Exception xx)
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261 {
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262 LOG.trace("",xx);
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263 }
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264
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265 if (len>0)
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266 throw x;
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267 len=-1;
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268 }
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269 }
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270 else
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271 {
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272 throw new IOException("Not Implemented");
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273 }
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274
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275 return len;
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276 }
802
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277
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278 /* (non-Javadoc)
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279 * @see org.eclipse.io.EndPoint#flush(org.eclipse.io.Buffer)
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280 */
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281 public int flush(Buffer buffer) throws IOException
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282 {
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283 Buffer buf = buffer.buffer();
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284 int len=0;
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285 if (buf instanceof NIOBuffer)
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286 {
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287 final NIOBuffer nbuf = (NIOBuffer)buf;
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288 final ByteBuffer bbuf=nbuf.getByteBuffer().asReadOnlyBuffer();
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289 try
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290 {
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291 bbuf.position(buffer.getIndex());
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292 bbuf.limit(buffer.putIndex());
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293 len=_channel.write(bbuf);
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294 }
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295 finally
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296 {
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297 if (len>0)
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298 buffer.skip(len);
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299 }
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300 }
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301 else if (buf instanceof RandomAccessFileBuffer)
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302 {
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303 len = ((RandomAccessFileBuffer)buf).writeTo(_channel,buffer.getIndex(),buffer.length());
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304 if (len>0)
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305 buffer.skip(len);
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306 }
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307 else if (buffer.array()!=null)
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308 {
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diff changeset
309 ByteBuffer b = ByteBuffer.wrap(buffer.array(), buffer.getIndex(), buffer.length());
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310 len=_channel.write(b);
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311 if (len>0)
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312 buffer.skip(len);
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313 }
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314 else
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315 {
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316 throw new IOException("Not Implemented");
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317 }
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318 return len;
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319 }
802
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320
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321 /* (non-Javadoc)
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322 * @see org.eclipse.io.EndPoint#flush(org.eclipse.io.Buffer, org.eclipse.io.Buffer, org.eclipse.io.Buffer)
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323 */
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324 public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
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325 {
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326 int length=0;
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327
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328 Buffer buf0 = header==null?null:header.buffer();
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329 Buffer buf1 = buffer==null?null:buffer.buffer();
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330
873
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331 if (_channel instanceof GatheringByteChannel &&
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332 header!=null && header.length()!=0 && buf0 instanceof NIOBuffer &&
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diff changeset
333 buffer!=null && buffer.length()!=0 && buf1 instanceof NIOBuffer)
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diff changeset
334 {
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diff changeset
335 length = gatheringFlush(header,((NIOBuffer)buf0).getByteBuffer(),buffer,((NIOBuffer)buf1).getByteBuffer());
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diff changeset
336 }
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diff changeset
337 else
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338 {
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339 // flush header
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diff changeset
340 if (header!=null && header.length()>0)
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diff changeset
341 length=flush(header);
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342
873
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343 // flush buffer
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344 if ((header==null || header.length()==0) &&
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345 buffer!=null && buffer.length()>0)
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diff changeset
346 length+=flush(buffer);
802
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347
873
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348 // flush trailer
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diff changeset
349 if ((header==null || header.length()==0) &&
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diff changeset
350 (buffer==null || buffer.length()==0) &&
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diff changeset
351 trailer!=null && trailer.length()>0)
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diff changeset
352 length+=flush(trailer);
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diff changeset
353 }
802
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354
873
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355 return length;
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356 }
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357
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358 protected int gatheringFlush(Buffer header, ByteBuffer bbuf0, Buffer buffer, ByteBuffer bbuf1) throws IOException
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359 {
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360 int length;
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361
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362 synchronized(this)
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363 {
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364 // Adjust position indexs of buf0 and buf1
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365 bbuf0=bbuf0.asReadOnlyBuffer();
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366 bbuf0.position(header.getIndex());
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367 bbuf0.limit(header.putIndex());
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368 bbuf1=bbuf1.asReadOnlyBuffer();
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369 bbuf1.position(buffer.getIndex());
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370 bbuf1.limit(buffer.putIndex());
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371
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372 _gather2[0]=bbuf0;
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373 _gather2[1]=bbuf1;
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374
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375 // do the gathering write.
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376 length=(int)((GatheringByteChannel)_channel).write(_gather2);
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377
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378 int hl=header.length();
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379 if (length>hl)
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380 {
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381 header.clear();
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382 buffer.skip(length-hl);
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383 }
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384 else if (length>0)
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385 {
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386 header.skip(length);
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387 }
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388 }
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389 return length;
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390 }
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391
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392 /* ------------------------------------------------------------ */
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393 /**
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394 * @return Returns the channel.
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395 */
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396 public ByteChannel getChannel()
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397 {
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398 return _channel;
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399 }
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400
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401
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402 /* ------------------------------------------------------------ */
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403 /*
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404 * @see org.eclipse.io.EndPoint#getLocalAddr()
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405 */
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406 public String getLocalAddr()
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407 {
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408 if (_socket==null)
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409 return null;
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410 if (_local==null || _local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
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411 return StringUtil.ALL_INTERFACES;
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412 return _local.getAddress().getHostAddress();
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413 }
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414
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415 /* ------------------------------------------------------------ */
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416 /*
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417 * @see org.eclipse.io.EndPoint#getLocalHost()
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418 */
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419 public String getLocalHost()
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420 {
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421 if (_socket==null)
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422 return null;
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423 if (_local==null || _local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
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424 return StringUtil.ALL_INTERFACES;
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425 return _local.getAddress().getCanonicalHostName();
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426 }
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427
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428 /* ------------------------------------------------------------ */
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429 /*
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430 * @see org.eclipse.io.EndPoint#getLocalPort()
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431 */
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432 public int getLocalPort()
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433 {
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434 if (_socket==null)
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435 return 0;
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436 if (_local==null)
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437 return -1;
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438 return _local.getPort();
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439 }
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440
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441 /* ------------------------------------------------------------ */
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442 /*
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443 * @see org.eclipse.io.EndPoint#getRemoteAddr()
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444 */
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445 public String getRemoteAddr()
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446 {
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447 if (_socket==null)
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448 return null;
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449 if (_remote==null)
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450 return null;
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451 return _remote.getAddress().getHostAddress();
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452 }
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453
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454 /* ------------------------------------------------------------ */
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455 /*
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456 * @see org.eclipse.io.EndPoint#getRemoteHost()
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457 */
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458 public String getRemoteHost()
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459 {
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460 if (_socket==null)
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461 return null;
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462 if (_remote==null)
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463 return null;
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464 return _remote.getAddress().getCanonicalHostName();
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465 }
802
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466
873
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467 /* ------------------------------------------------------------ */
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468 /*
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469 * @see org.eclipse.io.EndPoint#getRemotePort()
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470 */
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471 public int getRemotePort()
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472 {
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473 if (_socket==null)
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474 return 0;
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475 return _remote==null?-1:_remote.getPort();
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476 }
802
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477
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478 public Object getTransport()
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479 {
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480 return _channel;
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481 }
802
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482
873
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483 /* ------------------------------------------------------------ */
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484 public void flush()
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485 throws IOException
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486 {
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487 }
802
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488
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489 /* ------------------------------------------------------------ */
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490 public int getMaxIdleTime()
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491 {
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492 return _maxIdleTime;
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493 }
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494
873
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495 /* ------------------------------------------------------------ */
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496 public void setMaxIdleTime(int timeMs) throws IOException
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497 {
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498 if (_socket!=null && timeMs!=_maxIdleTime)
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499 _socket.setSoTimeout(timeMs>0?timeMs:0);
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500 _maxIdleTime=timeMs;
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501 }
802
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502 }