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annotate src/org/eclipse/jetty/io/EndPoint.java @ 840:0f53601ea489

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author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 19 Sep 2016 14:20:18 -0600
parents 3428c60d7cfc
children bdb6eb0fbf93
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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;
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20
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21 import java.io.IOException;
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22
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23
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24 /**
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25 *
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26 * A transport EndPoint
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27 */
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28 public interface EndPoint
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29 {
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30 /**
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31 * Shutdown any backing output stream associated with the endpoint
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32 */
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33 void shutdownOutput() throws IOException;
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34
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35 boolean isOutputShutdown();
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36
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37 /**
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38 * Shutdown any backing input stream associated with the endpoint
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39 */
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40 void shutdownInput() throws IOException;
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41
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42 boolean isInputShutdown();
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43
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44 /**
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45 * Close any backing stream associated with the endpoint
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46 */
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47 void close() throws IOException;
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48
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49 /**
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50 * Fill the buffer from the current putIndex to it's capacity from whatever
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51 * byte source is backing the buffer. The putIndex is increased if bytes filled.
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52 * The buffer may chose to do a compact before filling.
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53 * @return an <code>int</code> value indicating the number of bytes
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54 * filled or -1 if EOF is reached.
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55 * @throws EofException If input is shutdown or the endpoint is closed.
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56 */
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57 int fill(Buffer buffer) throws IOException;
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58
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59
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60 /**
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61 * Flush the buffer from the current getIndex to it's putIndex using whatever byte
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62 * sink is backing the buffer. The getIndex is updated with the number of bytes flushed.
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63 * Any mark set is cleared.
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64 * If the entire contents of the buffer are flushed, then an implicit empty() is done.
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65 *
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66 * @param buffer The buffer to flush. This buffers getIndex is updated.
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67 * @return the number of bytes written
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68 * @throws EofException If the endpoint is closed or output is shutdown.
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69 */
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70 int flush(Buffer buffer) throws IOException;
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71
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72 /**
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73 * Flush the buffer from the current getIndex to it's putIndex using whatever byte
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74 * sink is backing the buffer. The getIndex is updated with the number of bytes flushed.
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75 * Any mark set is cleared.
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76 * If the entire contents of the buffer are flushed, then an implicit empty() is done.
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77 * The passed header/trailer buffers are written before/after the contents of this buffer. This may be done
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78 * either as gather writes, as a poke into this buffer or as several writes. The implementation is free to
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79 * select the optimal mechanism.
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80 * @param header A buffer to write before flushing this buffer. This buffers getIndex is updated.
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81 * @param buffer The buffer to flush. This buffers getIndex is updated.
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82 * @param trailer A buffer to write after flushing this buffer. This buffers getIndex is updated.
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83 * @return the total number of bytes written.
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84 */
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85 int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException;
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86
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87
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88 /* ------------------------------------------------------------ */
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89 /**
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90 * @return The local IP address to which this <code>EndPoint</code> is bound, or <code>null</code>
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91 * if this <code>EndPoint</code> does not represent a network connection.
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92 */
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93 public String getLocalAddr();
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94
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95 /* ------------------------------------------------------------ */
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96 /**
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97 * @return The local host name to which this <code>EndPoint</code> is bound, or <code>null</code>
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98 * if this <code>EndPoint</code> does not represent a network connection.
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99 */
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100 public String getLocalHost();
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101
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102 /* ------------------------------------------------------------ */
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103 /**
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104 * @return The local port number on which this <code>EndPoint</code> is listening, or <code>0</code>
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105 * if this <code>EndPoint</code> does not represent a network connection.
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106 */
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107 public int getLocalPort();
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108
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109 /* ------------------------------------------------------------ */
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110 /**
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111 * @return The remote IP address to which this <code>EndPoint</code> is connected, or <code>null</code>
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112 * if this <code>EndPoint</code> does not represent a network connection.
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113 */
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114 public String getRemoteAddr();
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115
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116 /* ------------------------------------------------------------ */
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117 /**
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118 * @return The host name of the remote machine to which this <code>EndPoint</code> is connected, or <code>null</code>
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119 * if this <code>EndPoint</code> does not represent a network connection.
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120 */
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121 public String getRemoteHost();
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122
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123 /* ------------------------------------------------------------ */
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124 /**
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125 * @return The remote port number to which this <code>EndPoint</code> is connected, or <code>0</code>
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126 * if this <code>EndPoint</code> does not represent a network connection.
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127 */
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128 public int getRemotePort();
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129
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130 /* ------------------------------------------------------------ */
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131 public boolean isBlocking();
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132
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133 /* ------------------------------------------------------------ */
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134 public boolean blockReadable(long millisecs) throws IOException;
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135
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136 /* ------------------------------------------------------------ */
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137 public boolean blockWritable(long millisecs) throws IOException;
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138
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139 /* ------------------------------------------------------------ */
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140 public boolean isOpen();
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141
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142 /* ------------------------------------------------------------ */
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143 /**
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144 * @return The underlying transport object (socket, channel, etc.)
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145 */
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146 public Object getTransport();
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147
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148 /* ------------------------------------------------------------ */
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149 /** Flush any buffered output.
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150 * May fail to write all data if endpoint is non-blocking
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151 * @throws EofException If the endpoint is closed or output is shutdown.
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152 */
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153 public void flush() throws IOException;
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154
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155 /* ------------------------------------------------------------ */
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156 /** Get the max idle time in ms.
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157 * <p>The max idle time is the time the endpoint can be idle before
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158 * extraordinary handling takes place. This loosely corresponds to
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159 * the {@link java.net.Socket#getSoTimeout()} for blocking connections,
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160 * but {@link AsyncEndPoint} implementations must use other mechanisms
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161 * to implement the max idle time.
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162 * @return the max idle time in ms or if ms <= 0 implies an infinite timeout
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163 */
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164 public int getMaxIdleTime();
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165
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166 /* ------------------------------------------------------------ */
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167 /** Set the max idle time.
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168 * @param timeMs the max idle time in MS. Timeout <= 0 implies an infinite timeout
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169 * @throws IOException if the timeout cannot be set.
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170 */
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171 public void setMaxIdleTime(int timeMs) throws IOException;
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172
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173
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174
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175 }