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annotate src/org/eclipse/jetty/io/nio/ChannelEndPoint.java @ 960:3cd4c706a61f

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simplify ChannelEndPoint
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 13 Oct 2016 21:29:19 -0600
parents fc521d2f098e
children 866f2e801618
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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 protected ChannelEndPoint(ByteChannel channel, int maxIdleTime) throws IOException
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56 {
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57 this._channel = channel;
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58 _maxIdleTime = maxIdleTime;
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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 _socket.setSoTimeout(_maxIdleTime);
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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 @Override
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73 public final boolean isBlocking()
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74 {
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75 return !(_channel instanceof SelectableChannel) || ((SelectableChannel)_channel).isBlocking();
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76 }
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77
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78 @Override
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79 public boolean blockReadable(long millisecs) throws IOException
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80 {
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81 return true;
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82 }
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83
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84 @Override
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85 public boolean blockWritable(long millisecs) throws IOException
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86 {
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87 return true;
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88 }
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89
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90 @Override
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91 public final boolean isOpen()
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92 {
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93 return _channel.isOpen();
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94 }
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95
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96 @Override
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97 public final void shutdownInput() throws IOException
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98 {
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99 LOG.debug("ishut {}", this);
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100 _ishut = true;
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101 if (_channel.isOpen())
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102 {
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103 if (_socket != null)
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104 {
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105 try
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106 {
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107 if (!_socket.isInputShutdown())
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108 {
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109 _socket.shutdownInput();
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110 }
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111 }
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112 catch (SocketException e)
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113 {
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114 LOG.debug(e.toString());
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115 LOG.trace("",e);
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116 }
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117 finally
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118 {
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119 if (_oshut)
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120 {
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121 close();
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122 }
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123 }
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124 }
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125 }
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126 }
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127
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128 @Override
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129 public final void shutdownOutput() throws IOException
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130 {
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131 LOG.debug("oshut {}",this);
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132 _oshut = true;
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133 if (_channel.isOpen())
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134 {
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135 if (_socket != null)
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136 {
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137 try
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138 {
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139 if (!_socket.isOutputShutdown())
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140 {
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141 _socket.shutdownOutput();
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142 }
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143 }
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144 catch (SocketException e)
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145 {
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146 LOG.debug(e.toString());
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147 LOG.trace("",e);
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148 }
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149 finally
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150 {
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151 if (_ishut)
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152 {
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153 close();
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154 }
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155 }
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156 }
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157 }
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158 }
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159
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160 @Override
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161 public final boolean isOutputShutdown()
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162 {
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163 return _oshut || !_channel.isOpen() || _socket != null && _socket.isOutputShutdown();
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164 }
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165
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166 @Override
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167 public final boolean isInputShutdown()
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168 {
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169 return _ishut || !_channel.isOpen() || _socket != null && _socket.isInputShutdown();
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170 }
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171
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172 @Override
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173 public void close() throws IOException
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174 {
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175 LOG.debug("close {}",this);
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176 _channel.close();
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177 }
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178
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179 /* (non-Javadoc)
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180 * @see org.eclipse.io.EndPoint#fill(org.eclipse.io.Buffer)
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181 */
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182 public int fill(Buffer buffer) throws IOException
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183 {
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184 if (_ishut)
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185 return -1;
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186 Buffer buf = buffer.buffer();
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187 int len=0;
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188 if (buf instanceof NIOBuffer)
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189 {
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190 final NIOBuffer nbuf = (NIOBuffer)buf;
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191 final ByteBuffer bbuf=nbuf.getByteBuffer();
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192
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193 //noinspection SynchronizationOnLocalVariableOrMethodParameter
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194 try
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195 {
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196 synchronized(bbuf)
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197 {
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198 try
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199 {
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200 bbuf.position(buffer.putIndex());
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201 len=_channel.read(bbuf);
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202 }
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203 finally
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204 {
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205 buffer.setPutIndex(bbuf.position());
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206 bbuf.position(0);
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207 }
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208 }
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209
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210 if (len<0 && isOpen())
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211 {
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212 if (!isInputShutdown())
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213 shutdownInput();
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214 if (isOutputShutdown())
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215 _channel.close();
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216 }
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217 }
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218 catch (IOException x)
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219 {
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220 LOG.debug("Exception while filling", x);
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221 try
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222 {
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223 if (_channel.isOpen())
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224 _channel.close();
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225 }
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226 catch (Exception xx)
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227 {
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228 LOG.trace("",xx);
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229 }
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230
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231 if (len>0)
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232 throw x;
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233 len=-1;
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234 }
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235 }
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236 else
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237 {
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238 throw new IOException("Not Implemented");
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239 }
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240
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241 return len;
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242 }
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243
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244 /* (non-Javadoc)
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245 * @see org.eclipse.io.EndPoint#flush(org.eclipse.io.Buffer)
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246 */
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247 public int flush(Buffer buffer) throws IOException
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248 {
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249 Buffer buf = buffer.buffer();
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250 int len=0;
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251 if (buf instanceof NIOBuffer)
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252 {
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253 final NIOBuffer nbuf = (NIOBuffer)buf;
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254 final ByteBuffer bbuf=nbuf.getByteBuffer().asReadOnlyBuffer();
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255 try
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256 {
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257 bbuf.position(buffer.getIndex());
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258 bbuf.limit(buffer.putIndex());
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259 len=_channel.write(bbuf);
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260 }
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261 finally
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262 {
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263 if (len>0)
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264 buffer.skip(len);
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265 }
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266 }
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267 else if (buf instanceof RandomAccessFileBuffer)
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268 {
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269 len = ((RandomAccessFileBuffer)buf).writeTo(_channel,buffer.getIndex(),buffer.length());
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270 if (len>0)
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271 buffer.skip(len);
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272 }
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273 else if (buffer.array()!=null)
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274 {
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275 ByteBuffer b = ByteBuffer.wrap(buffer.array(), buffer.getIndex(), buffer.length());
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276 len=_channel.write(b);
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277 if (len>0)
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278 buffer.skip(len);
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279 }
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280 else
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281 {
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282 throw new IOException("Not Implemented");
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283 }
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284 return len;
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285 }
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286
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287 /* (non-Javadoc)
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288 * @see org.eclipse.io.EndPoint#flush(org.eclipse.io.Buffer, org.eclipse.io.Buffer, org.eclipse.io.Buffer)
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289 */
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290 public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
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291 {
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292 int length=0;
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293
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294 Buffer buf0 = header==null?null:header.buffer();
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295 Buffer buf1 = buffer==null?null:buffer.buffer();
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296
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297 if (_channel instanceof GatheringByteChannel &&
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298 header!=null && header.length()!=0 && buf0 instanceof NIOBuffer &&
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299 buffer!=null && buffer.length()!=0 && buf1 instanceof NIOBuffer)
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300 {
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301 length = gatheringFlush(header,((NIOBuffer)buf0).getByteBuffer(),buffer,((NIOBuffer)buf1).getByteBuffer());
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302 }
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303 else
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304 {
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305 // flush header
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306 if (header!=null && header.length()>0)
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307 length=flush(header);
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308
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309 // flush buffer
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310 if ((header==null || header.length()==0) &&
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311 buffer!=null && buffer.length()>0)
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312 length+=flush(buffer);
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313
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314 // flush trailer
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315 if ((header==null || header.length()==0) &&
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316 (buffer==null || buffer.length()==0) &&
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317 trailer!=null && trailer.length()>0)
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318 length+=flush(trailer);
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319 }
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320
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321 return length;
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322 }
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323
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324 protected int gatheringFlush(Buffer header, ByteBuffer bbuf0, Buffer buffer, ByteBuffer bbuf1) throws IOException
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325 {
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326 int length;
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327
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328 synchronized(this)
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329 {
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330 // Adjust position indexs of buf0 and buf1
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331 bbuf0=bbuf0.asReadOnlyBuffer();
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332 bbuf0.position(header.getIndex());
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333 bbuf0.limit(header.putIndex());
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334 bbuf1=bbuf1.asReadOnlyBuffer();
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335 bbuf1.position(buffer.getIndex());
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336 bbuf1.limit(buffer.putIndex());
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337
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338 _gather2[0]=bbuf0;
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339 _gather2[1]=bbuf1;
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340
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341 // do the gathering write.
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342 length=(int)((GatheringByteChannel)_channel).write(_gather2);
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343
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344 int hl=header.length();
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345 if (length>hl)
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346 {
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347 header.clear();
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348 buffer.skip(length-hl);
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349 }
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350 else if (length>0)
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351 {
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352 header.skip(length);
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353 }
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354 }
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355 return length;
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356 }
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357
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358 /* ------------------------------------------------------------ */
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359 /**
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360 * @return Returns the channel.
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361 */
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362 public ByteChannel getChannel()
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363 {
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364 return _channel;
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365 }
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366
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367
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368 /* ------------------------------------------------------------ */
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369 /*
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370 * @see org.eclipse.io.EndPoint#getLocalAddr()
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371 */
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372 public String getLocalAddr()
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373 {
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374 if (_socket==null)
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375 return null;
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376 if (_local==null || _local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
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377 return StringUtil.ALL_INTERFACES;
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378 return _local.getAddress().getHostAddress();
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379 }
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380
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381 /* ------------------------------------------------------------ */
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382 /*
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383 * @see org.eclipse.io.EndPoint#getLocalHost()
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384 */
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385 public String getLocalHost()
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386 {
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387 if (_socket==null)
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388 return null;
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389 if (_local==null || _local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
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390 return StringUtil.ALL_INTERFACES;
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391 return _local.getAddress().getCanonicalHostName();
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392 }
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393
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394 /* ------------------------------------------------------------ */
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395 /*
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396 * @see org.eclipse.io.EndPoint#getLocalPort()
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397 */
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398 public int getLocalPort()
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399 {
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400 if (_socket==null)
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401 return 0;
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402 if (_local==null)
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403 return -1;
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404 return _local.getPort();
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405 }
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406
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407 /* ------------------------------------------------------------ */
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408 /*
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409 * @see org.eclipse.io.EndPoint#getRemoteAddr()
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410 */
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411 public String getRemoteAddr()
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412 {
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413 if (_socket==null)
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414 return null;
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415 if (_remote==null)
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416 return null;
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417 return _remote.getAddress().getHostAddress();
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418 }
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419
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420 /* ------------------------------------------------------------ */
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421 /*
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422 * @see org.eclipse.io.EndPoint#getRemoteHost()
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423 */
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424 public String getRemoteHost()
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425 {
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426 if (_socket==null)
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427 return null;
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428 if (_remote==null)
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429 return null;
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430 return _remote.getAddress().getCanonicalHostName();
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431 }
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432
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433 /* ------------------------------------------------------------ */
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434 /*
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435 * @see org.eclipse.io.EndPoint#getRemotePort()
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436 */
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437 public int getRemotePort()
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438 {
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439 if (_socket==null)
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440 return 0;
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441 return _remote==null?-1:_remote.getPort();
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442 }
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443
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444 public Object getTransport()
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445 {
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446 return _channel;
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447 }
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448
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449 /* ------------------------------------------------------------ */
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450 public void flush()
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451 throws IOException
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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 public int getMaxIdleTime()
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457 {
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458 return _maxIdleTime;
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459 }
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460
873
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461 /* ------------------------------------------------------------ */
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462 public void setMaxIdleTime(int timeMs) throws IOException
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463 {
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464 if (_socket!=null && timeMs!=_maxIdleTime)
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465 _socket.setSoTimeout(timeMs>0?timeMs:0);
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466 _maxIdleTime=timeMs;
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467 }
802
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468 }