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annotate src/org/eclipse/jetty/io/nio/ChannelEndPoint.java @ 1038:b71ad168fe34

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rename Buffer.length() to remaining()
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 03 Nov 2016 22:16:11 -0600
parents 921c25a05eaa
children a8c92b0a08ed
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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.SocketChannel;
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29
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30 import org.eclipse.jetty.io.Buffer;
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31 import org.eclipse.jetty.io.EndPoint;
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32 import org.eclipse.jetty.util.StringUtil;
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33 import org.slf4j.Logger;
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34 import org.slf4j.LoggerFactory;
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35
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36 /**
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37 * Channel End Point.
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38 * <p>Holds the channel and socket for an NIO endpoint.
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39 *
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40 */
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41 public class ChannelEndPoint implements EndPoint
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42 {
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43 private static final Logger LOG = LoggerFactory.getLogger(ChannelEndPoint.class);
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44
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45 private final SocketChannel _channel;
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46 private final ByteBuffer[] _gather2 = new ByteBuffer[2];
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47 protected final Socket _socket;
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48 private final InetSocketAddress _local;
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49 private final InetSocketAddress _remote;
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50 protected volatile int _maxIdleTime;
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51 private volatile boolean _ishut = false;
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52 private volatile boolean _oshut = false;
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53
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54 protected ChannelEndPoint(SocketChannel channel, int maxIdleTime) throws IOException
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55 {
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56 this._channel = channel;
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57 _maxIdleTime = maxIdleTime;
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58 _socket = channel.socket();
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59 _local = (InetSocketAddress)_socket.getLocalSocketAddress();
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60 _remote = (InetSocketAddress)_socket.getRemoteSocketAddress();
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61 _socket.setSoTimeout(_maxIdleTime);
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62 }
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63
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64 @Override
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65 public final boolean isBlocking()
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66 {
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67 return _channel.isBlocking();
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68 }
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69
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70 @Override
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71 public boolean blockReadable(long millisecs) throws IOException
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72 {
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73 return true;
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74 }
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75
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76 @Override
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77 public boolean blockWritable(long millisecs) throws IOException
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78 {
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79 return true;
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80 }
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81
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82 @Override
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83 public final boolean isOpen()
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84 {
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85 return _channel.isOpen();
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86 }
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87
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88 @Override
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89 public final void shutdownInput() throws IOException
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90 {
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91 LOG.debug("ishut {}", this);
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92 _ishut = true;
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93 if (_channel.isOpen())
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94 {
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95 try
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96 {
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97 if (!_socket.isInputShutdown())
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98 {
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99 _socket.shutdownInput();
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100 }
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101 }
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102 catch (SocketException e)
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103 {
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104 LOG.debug(e.toString());
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105 LOG.trace("",e);
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106 }
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107 finally
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108 {
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109 if (_oshut)
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110 {
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111 close();
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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 @Override
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118 public final void shutdownOutput() throws IOException
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119 {
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120 LOG.debug("oshut {}",this);
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121 _oshut = true;
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122 if (_channel.isOpen())
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123 {
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124 try
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125 {
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126 if (!_socket.isOutputShutdown())
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127 {
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128 _socket.shutdownOutput();
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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 (_ishut)
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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 @Override
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147 public final boolean isOutputShutdown()
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148 {
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149 return _oshut || !_channel.isOpen() || _socket.isOutputShutdown();
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150 }
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151
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152 @Override
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153 public final boolean isInputShutdown()
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154 {
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155 return _ishut || !_channel.isOpen() || _socket.isInputShutdown();
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156 }
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157
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158 @Override
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159 public void close() throws IOException
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160 {
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161 //Thread.dumpStack();
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162 LOG.debug("close {}",this);
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163 _channel.close();
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164 }
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165
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166 @Override
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167 public int fill(Buffer buffer) throws IOException
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168 {
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169 if (_ishut)
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170 return -1;
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171 Buffer buf = buffer.buffer();
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172 int len = 0;
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173 if (buf instanceof NIOBuffer)
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174 {
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175 final NIOBuffer nbuf = (NIOBuffer)buf;
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176 final ByteBuffer bbuf = nbuf.getByteBuffer();
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177
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178 //noinspection SynchronizationOnLocalVariableOrMethodParameter
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179 try
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180 {
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181 synchronized(bbuf)
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182 {
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183 try
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184 {
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185 bbuf.position(buffer.putIndex());
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186 len=_channel.read(bbuf);
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187 }
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188 finally
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189 {
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190 buffer.setPutIndex(bbuf.position());
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191 bbuf.position(0);
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192 }
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193 }
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194
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195 if (len<0 && isOpen())
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196 {
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197 if (!isInputShutdown())
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198 shutdownInput();
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199 if (isOutputShutdown())
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200 _channel.close();
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201 }
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202 }
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203 catch (IOException x)
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204 {
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205 LOG.debug("Exception while filling", x);
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206 try
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207 {
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208 if (_channel.isOpen())
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209 _channel.close();
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210 }
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diff changeset
211 catch (Exception xx)
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212 {
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213 LOG.trace("",xx);
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214 }
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215
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216 if (len>0)
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217 throw x;
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218 len=-1;
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219 }
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220 }
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diff changeset
221 else
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222 {
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223 throw new IOException("Not Implemented");
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224 }
802
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225
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226 return len;
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227 }
802
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228
978
bdb6eb0fbf93 simplify ChannelEndPoint
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diff changeset
229 @Override
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230 public int flush(Buffer buffer) throws IOException
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231 {
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232 Buffer buf = buffer.buffer();
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233 int len=0;
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234 if (buf instanceof NIOBuffer)
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235 {
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236 final NIOBuffer nbuf = (NIOBuffer)buf;
1031
921c25a05eaa remove Buffer.asReadOnlyBuffer()
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diff changeset
237 final ByteBuffer bbuf = nbuf.getByteBuffer().asReadOnlyBuffer();
873
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diff changeset
238 try
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239 {
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diff changeset
240 bbuf.position(buffer.getIndex());
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diff changeset
241 bbuf.limit(buffer.putIndex());
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242 len=_channel.write(bbuf);
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243 }
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diff changeset
244 finally
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245 {
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diff changeset
246 if (len>0)
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diff changeset
247 buffer.skip(len);
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248 }
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249 }
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diff changeset
250 else if (buffer.array()!=null)
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diff changeset
251 {
1038
b71ad168fe34 rename Buffer.length() to remaining()
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diff changeset
252 ByteBuffer b = ByteBuffer.wrap(buffer.array(), buffer.getIndex(), buffer.remaining());
873
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diff changeset
253 len=_channel.write(b);
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diff changeset
254 if (len>0)
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diff changeset
255 buffer.skip(len);
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diff changeset
256 }
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diff changeset
257 else
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diff changeset
258 {
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diff changeset
259 throw new IOException("Not Implemented");
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diff changeset
260 }
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diff changeset
261 return len;
220ad4853cda remove StreamEndPoint
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262 }
802
3428c60d7cfc replace jetty jars with source
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diff changeset
263
978
bdb6eb0fbf93 simplify ChannelEndPoint
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diff changeset
264 @Override
873
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diff changeset
265 public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
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266 {
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267 int length=0;
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268
873
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diff changeset
269 Buffer buf0 = header==null?null:header.buffer();
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diff changeset
270 Buffer buf1 = buffer==null?null:buffer.buffer();
802
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271
873
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diff changeset
272 if (_channel instanceof GatheringByteChannel &&
1038
b71ad168fe34 rename Buffer.length() to remaining()
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diff changeset
273 header!=null && header.remaining()!=0 && buf0 instanceof NIOBuffer &&
b71ad168fe34 rename Buffer.length() to remaining()
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diff changeset
274 buffer!=null && buffer.remaining()!=0 && buf1 instanceof NIOBuffer)
873
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diff changeset
275 {
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diff changeset
276 length = gatheringFlush(header,((NIOBuffer)buf0).getByteBuffer(),buffer,((NIOBuffer)buf1).getByteBuffer());
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diff changeset
277 }
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diff changeset
278 else
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diff changeset
279 {
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diff changeset
280 // flush header
1038
b71ad168fe34 rename Buffer.length() to remaining()
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diff changeset
281 if (header!=null && header.remaining()>0)
873
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diff changeset
282 length=flush(header);
802
3428c60d7cfc replace jetty jars with source
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283
873
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diff changeset
284 // flush buffer
1038
b71ad168fe34 rename Buffer.length() to remaining()
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diff changeset
285 if ((header==null || header.remaining()==0) &&
b71ad168fe34 rename Buffer.length() to remaining()
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diff changeset
286 buffer!=null && buffer.remaining()>0)
873
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diff changeset
287 length+=flush(buffer);
802
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diff changeset
288
873
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diff changeset
289 // flush trailer
1038
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diff changeset
290 if ((header==null || header.remaining()==0) &&
b71ad168fe34 rename Buffer.length() to remaining()
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diff changeset
291 (buffer==null || buffer.remaining()==0) &&
b71ad168fe34 rename Buffer.length() to remaining()
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diff changeset
292 trailer!=null && trailer.remaining()>0)
873
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diff changeset
293 length+=flush(trailer);
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diff changeset
294 }
802
3428c60d7cfc replace jetty jars with source
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295
873
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diff changeset
296 return length;
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diff changeset
297 }
802
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298
978
bdb6eb0fbf93 simplify ChannelEndPoint
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diff changeset
299 private int gatheringFlush(Buffer header, ByteBuffer bbuf0, Buffer buffer, ByteBuffer bbuf1) throws IOException
873
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diff changeset
300 {
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diff changeset
301 int length;
802
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diff changeset
302
873
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diff changeset
303 synchronized(this)
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diff changeset
304 {
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diff changeset
305 // Adjust position indexs of buf0 and buf1
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diff changeset
306 bbuf0=bbuf0.asReadOnlyBuffer();
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diff changeset
307 bbuf0.position(header.getIndex());
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diff changeset
308 bbuf0.limit(header.putIndex());
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diff changeset
309 bbuf1=bbuf1.asReadOnlyBuffer();
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diff changeset
310 bbuf1.position(buffer.getIndex());
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diff changeset
311 bbuf1.limit(buffer.putIndex());
802
3428c60d7cfc replace jetty jars with source
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diff changeset
312
873
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diff changeset
313 _gather2[0]=bbuf0;
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diff changeset
314 _gather2[1]=bbuf1;
802
3428c60d7cfc replace jetty jars with source
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diff changeset
315
873
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diff changeset
316 // do the gathering write.
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diff changeset
317 length=(int)((GatheringByteChannel)_channel).write(_gather2);
802
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diff changeset
318
1038
b71ad168fe34 rename Buffer.length() to remaining()
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parents: 1031
diff changeset
319 int hl=header.remaining();
873
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
320 if (length>hl)
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parents: 820
diff changeset
321 {
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
322 header.clear();
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parents: 820
diff changeset
323 buffer.skip(length-hl);
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parents: 820
diff changeset
324 }
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
325 else if (length>0)
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parents: 820
diff changeset
326 {
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parents: 820
diff changeset
327 header.skip(length);
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
328 }
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
329 }
220ad4853cda remove StreamEndPoint
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diff changeset
330 return length;
220ad4853cda remove StreamEndPoint
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diff changeset
331 }
802
3428c60d7cfc replace jetty jars with source
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diff changeset
332
978
bdb6eb0fbf93 simplify ChannelEndPoint
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parents: 965
diff changeset
333 public final SocketChannel getChannel()
873
220ad4853cda remove StreamEndPoint
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diff changeset
334 {
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diff changeset
335 return _channel;
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
336 }
802
3428c60d7cfc replace jetty jars with source
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diff changeset
337
978
bdb6eb0fbf93 simplify ChannelEndPoint
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parents: 965
diff changeset
338 @Override
bdb6eb0fbf93 simplify ChannelEndPoint
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parents: 965
diff changeset
339 public final String getLocalAddr()
873
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
340 {
978
bdb6eb0fbf93 simplify ChannelEndPoint
Franklin Schmidt <fschmidt@gmail.com>
parents: 965
diff changeset
341 if (_local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
873
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
342 return StringUtil.ALL_INTERFACES;
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
343 return _local.getAddress().getHostAddress();
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
344 }
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
345
978
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346 @Override
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347 public final String getLocalHost()
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348 {
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349 if (_local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
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350 return StringUtil.ALL_INTERFACES;
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351 return _local.getAddress().getCanonicalHostName();
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352 }
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353
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354 @Override
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355 public final int getLocalPort()
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356 {
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357 return _local.getPort();
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358 }
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359
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360 @Override
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361 public final String getRemoteAddr()
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362 {
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363 return _remote.getAddress().getHostAddress();
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364 }
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365
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366 @Override
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367 public final String getRemoteHost()
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368 {
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369 return _remote.getAddress().getCanonicalHostName();
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370 }
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371
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372 @Override
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373 public final int getRemotePort()
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374 {
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375 return _remote.getPort();
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376 }
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377
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378 @Override
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379 public void flush()
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380 throws IOException
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381 {
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382 }
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383
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384 @Override
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385 public final int getMaxIdleTime()
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386 {
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387 return _maxIdleTime;
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388 }
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389
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390 @Override
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391 public void setMaxIdleTime(int timeMs) throws IOException
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392 {
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393 if (timeMs!=_maxIdleTime)
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394 _socket.setSoTimeout(timeMs>0?timeMs:0);
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395 _maxIdleTime=timeMs;
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396 }
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397 }