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annotate src/org/eclipse/jetty/io/nio/ChannelEndPoint.java @ 978:bdb6eb0fbf93

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simplify ChannelEndPoint
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 16 Oct 2016 14:53:43 -0600
parents 866f2e801618
children 4f2d04c72781
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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 LOG.debug("close {}",this);
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162 _channel.close();
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163 }
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164
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165 @Override
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166 public int fill(Buffer buffer) throws IOException
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167 {
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168 if (_ishut)
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169 return -1;
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170 Buffer buf = buffer.buffer();
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171 int len=0;
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172 if (buf instanceof NIOBuffer)
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173 {
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174 final NIOBuffer nbuf = (NIOBuffer)buf;
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175 final ByteBuffer bbuf=nbuf.getByteBuffer();
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176
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177 //noinspection SynchronizationOnLocalVariableOrMethodParameter
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178 try
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179 {
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180 synchronized(bbuf)
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181 {
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182 try
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183 {
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184 bbuf.position(buffer.putIndex());
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185 len=_channel.read(bbuf);
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186 }
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187 finally
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188 {
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189 buffer.setPutIndex(bbuf.position());
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190 bbuf.position(0);
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191 }
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192 }
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193
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194 if (len<0 && isOpen())
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195 {
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196 if (!isInputShutdown())
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197 shutdownInput();
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198 if (isOutputShutdown())
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199 _channel.close();
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200 }
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201 }
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202 catch (IOException x)
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203 {
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204 LOG.debug("Exception while filling", x);
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205 try
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206 {
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207 if (_channel.isOpen())
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208 _channel.close();
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209 }
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210 catch (Exception xx)
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211 {
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212 LOG.trace("",xx);
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213 }
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214
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215 if (len>0)
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216 throw x;
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217 len=-1;
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218 }
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219 }
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220 else
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221 {
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222 throw new IOException("Not Implemented");
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223 }
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224
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225 return len;
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226 }
802
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227
978
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228 @Override
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229 public int flush(Buffer buffer) throws IOException
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230 {
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231 Buffer buf = buffer.buffer();
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232 int len=0;
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233 if (buf instanceof NIOBuffer)
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234 {
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235 final NIOBuffer nbuf = (NIOBuffer)buf;
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236 final ByteBuffer bbuf=nbuf.getByteBuffer().asReadOnlyBuffer();
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237 try
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238 {
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239 bbuf.position(buffer.getIndex());
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240 bbuf.limit(buffer.putIndex());
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241 len=_channel.write(bbuf);
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242 }
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243 finally
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244 {
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245 if (len>0)
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246 buffer.skip(len);
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247 }
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248 }
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249 else if (buf instanceof RandomAccessFileBuffer)
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250 {
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251 len = ((RandomAccessFileBuffer)buf).writeTo(_channel,buffer.getIndex(),buffer.length());
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252 if (len>0)
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253 buffer.skip(len);
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254 }
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255 else if (buffer.array()!=null)
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256 {
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diff changeset
257 ByteBuffer b = ByteBuffer.wrap(buffer.array(), buffer.getIndex(), buffer.length());
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diff changeset
258 len=_channel.write(b);
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diff changeset
259 if (len>0)
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diff changeset
260 buffer.skip(len);
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diff changeset
261 }
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diff changeset
262 else
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diff changeset
263 {
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264 throw new IOException("Not Implemented");
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diff changeset
265 }
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266 return len;
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267 }
802
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268
978
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diff changeset
269 @Override
873
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270 public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
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271 {
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272 int length=0;
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273
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274 Buffer buf0 = header==null?null:header.buffer();
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275 Buffer buf1 = buffer==null?null:buffer.buffer();
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276
873
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277 if (_channel instanceof GatheringByteChannel &&
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diff changeset
278 header!=null && header.length()!=0 && buf0 instanceof NIOBuffer &&
220ad4853cda remove StreamEndPoint
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diff changeset
279 buffer!=null && buffer.length()!=0 && buf1 instanceof NIOBuffer)
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280 {
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diff changeset
281 length = gatheringFlush(header,((NIOBuffer)buf0).getByteBuffer(),buffer,((NIOBuffer)buf1).getByteBuffer());
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282 }
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283 else
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284 {
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diff changeset
285 // flush header
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diff changeset
286 if (header!=null && header.length()>0)
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287 length=flush(header);
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288
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289 // flush buffer
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290 if ((header==null || header.length()==0) &&
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291 buffer!=null && buffer.length()>0)
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292 length+=flush(buffer);
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293
873
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294 // flush trailer
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diff changeset
295 if ((header==null || header.length()==0) &&
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diff changeset
296 (buffer==null || buffer.length()==0) &&
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297 trailer!=null && trailer.length()>0)
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298 length+=flush(trailer);
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diff changeset
299 }
802
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300
873
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diff changeset
301 return length;
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diff changeset
302 }
802
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303
978
bdb6eb0fbf93 simplify ChannelEndPoint
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diff changeset
304 private int gatheringFlush(Buffer header, ByteBuffer bbuf0, Buffer buffer, ByteBuffer bbuf1) throws IOException
873
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305 {
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diff changeset
306 int length;
802
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307
873
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diff changeset
308 synchronized(this)
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diff changeset
309 {
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diff changeset
310 // Adjust position indexs of buf0 and buf1
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diff changeset
311 bbuf0=bbuf0.asReadOnlyBuffer();
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diff changeset
312 bbuf0.position(header.getIndex());
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diff changeset
313 bbuf0.limit(header.putIndex());
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diff changeset
314 bbuf1=bbuf1.asReadOnlyBuffer();
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diff changeset
315 bbuf1.position(buffer.getIndex());
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diff changeset
316 bbuf1.limit(buffer.putIndex());
802
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diff changeset
317
873
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diff changeset
318 _gather2[0]=bbuf0;
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diff changeset
319 _gather2[1]=bbuf1;
802
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320
873
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diff changeset
321 // do the gathering write.
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diff changeset
322 length=(int)((GatheringByteChannel)_channel).write(_gather2);
802
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diff changeset
323
873
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diff changeset
324 int hl=header.length();
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diff changeset
325 if (length>hl)
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diff changeset
326 {
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diff changeset
327 header.clear();
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diff changeset
328 buffer.skip(length-hl);
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diff changeset
329 }
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diff changeset
330 else if (length>0)
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diff changeset
331 {
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diff changeset
332 header.skip(length);
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diff changeset
333 }
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diff changeset
334 }
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diff changeset
335 return length;
220ad4853cda remove StreamEndPoint
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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 public final SocketChannel getChannel()
873
220ad4853cda remove StreamEndPoint
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diff changeset
339 {
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diff changeset
340 return _channel;
220ad4853cda remove StreamEndPoint
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diff changeset
341 }
802
3428c60d7cfc replace jetty jars with source
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diff changeset
342
978
bdb6eb0fbf93 simplify ChannelEndPoint
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parents: 965
diff changeset
343 @Override
bdb6eb0fbf93 simplify ChannelEndPoint
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parents: 965
diff changeset
344 public final String getLocalAddr()
873
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
345 {
978
bdb6eb0fbf93 simplify ChannelEndPoint
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parents: 965
diff changeset
346 if (_local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
873
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
347 return StringUtil.ALL_INTERFACES;
220ad4853cda remove StreamEndPoint
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parents: 820
diff changeset
348 return _local.getAddress().getHostAddress();
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349 }
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350
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351 @Override
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352 public final String getLocalHost()
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353 {
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354 if (_local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
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355 return StringUtil.ALL_INTERFACES;
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356 return _local.getAddress().getCanonicalHostName();
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357 }
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358
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359 @Override
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360 public final int getLocalPort()
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361 {
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362 return _local.getPort();
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363 }
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364
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365 @Override
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366 public final String getRemoteAddr()
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367 {
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368 return _remote.getAddress().getHostAddress();
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369 }
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370
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371 @Override
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372 public final String getRemoteHost()
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373 {
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374 return _remote.getAddress().getCanonicalHostName();
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375 }
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376
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377 @Override
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378 public final int getRemotePort()
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379 {
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380 return _remote.getPort();
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381 }
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382
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383 @Override
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384 public void flush()
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385 throws IOException
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386 {
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387 }
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388
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389 @Override
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390 public final int getMaxIdleTime()
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391 {
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392 return _maxIdleTime;
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393 }
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394
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395 @Override
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396 public void setMaxIdleTime(int timeMs) throws IOException
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397 {
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398 if (timeMs!=_maxIdleTime)
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399 _socket.setSoTimeout(timeMs>0?timeMs:0);
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400 _maxIdleTime=timeMs;
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401 }
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402 }