Mercurial > hg > nginx-site

annotate xml/en/docs/http/ngx_http_browser_module.xml @ 617:368a449e85b8

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Expanded documentation of what various parameters of the "listen" directive related to socket options do. While here, documented the fact that accept filters also work on NetBSD.
author Ruslan Ermilov <ru@nginx.com>
date Thu, 02 Aug 2012 13:24:07 +0000
parents 764fbac1b8b4
children 95c3c3bbf1ce
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315
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1 <?xml version="1.0"?>
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2
580
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3 <!--
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4 Copyright (C) Igor Sysoev
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5 Copyright (C) Nginx, Inc.
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6 -->
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7
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8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd">
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9
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10 <module name="Module ngx_http_browser_module"
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11 link="/en/docs/http/ngx_http_browser_module.html"
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12 lang="en"
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13 rev="1">
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14
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15 <section id="summary">
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16
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17 <para>
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18 The <literal>ngx_http_browser_module</literal> module creates variables
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19 whose values depend on the value of the <header>User-Agent</header>
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20 request header field:
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21 <list type="tag">
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22
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23 <tag-name><var>$modern_browser</var></tag-name>
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24 <tag-desc>
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25 equals to the value set by the <link id="modern_browser_value"/> directive,
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26 if a browser was identified as modern;
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27 </tag-desc>
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28
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29 <tag-name><var>$ancient_browser</var></tag-name>
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30 <tag-desc>
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31 equals to the value set by the <link id="ancient_browser_value"/> directive,
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32 if a browser was identified as ancient;
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33 </tag-desc>
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34
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35 <tag-name><var>$msie</var></tag-name>
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36 <tag-desc>
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37 equals “1” if a browser was identified as MSIE of any version.
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38 </tag-desc>
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39
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40 </list>
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41 </para>
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42
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43 </section>
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44
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45
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46 <section id="example" name="Example Configuration">
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47
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48 <para>
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49 Choosing an index file:
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50 <example>
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51 modern_browser_value "modern.";
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52
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53 modern_browser msie 5.5;
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54 modern_browser gecko 1.0.0;
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55 modern_browser opera 9.0;
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56 modern_browser safari 413;
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57 modern_browser konqueror 3.0;
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58
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59 index index.${modern_browser}html index.html;
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60 </example>
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61 </para>
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62
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63 <para>
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64 Redirection for old browsers:
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65 <example>
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66 modern_browser msie 5.0;
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67 modern_browser gecko 0.9.1;
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68 modern_browser opera 8.0;
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69 modern_browser safari 413;
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70 modern_browser konqueror 3.0;
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71
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72 modern_browser unlisted;
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73
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74 ancient_browser Links Lynx netscape4;
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75
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76 if ($ancient_browser) {
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77 rewrite ^ /ancient.html;
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78 }
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79 </example>
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80 </para>
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81
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82 </section>
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83
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84
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85 <section id="directives" name="Directives">
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86
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87 <directive name="ancient_browser">
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88 <syntax><value>string</value> ...</syntax>
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89 <default/>
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90 <context>http</context>
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91 <context>server</context>
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92 <context>location</context>
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93
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94 <para>
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95 If any of the specified substrings is found in the <header>User-Agent</header>
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96 request header field, a browser will be considered ancient.
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97 The special string “<literal>netscape4</literal>” corresponds to the
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98 regular expression “<literal>^Mozilla/[1-4]</literal>”.
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99 </para>
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100
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101 </directive>
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102
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103
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104 <directive name="ancient_browser_value">
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105 <syntax><value>string</value></syntax>
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106 <default>1</default>
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107 <context>http</context>
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108 <context>server</context>
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109 <context>location</context>
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110
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111 <para>
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112 Sets a value for the <var>$ancient_browser</var> variables.
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113 </para>
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114
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115 </directive>
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116
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117
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118 <directive name="modern_browser">
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119 <syntax><value>browser</value> <value>version</value></syntax>
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120 <syntax><literal>unlisted</literal></syntax>
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121 <default/>
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122 <context>http</context>
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123 <context>server</context>
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124 <context>location</context>
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125
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126 <para>
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127 Specifies a version starting from which a browser is considered modern.
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128 A browser can be any one of the following: <literal>msie</literal>,
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129 <literal>gecko</literal> (browsers based on Mozilla),
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130 <literal>opera</literal>, <literal>safari</literal>,
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131 or <literal>konqueror</literal>.
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132 </para>
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133
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134 <para>
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135 Versions can be specified in the following formats: X, X.X, X.X.X, or X.X.X.X.
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136 The maximum values for each of the format are
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137 4000, 4000.99, 4000.99.99, and 4000.99.99.99, respectively.
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138 </para>
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139
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140 <para>
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141 The special value <literal>unlisted</literal> specifies to consider
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142 a browser as modern if it was not listed by the
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143 <literal>modern_browser</literal> and <link id="ancient_browser"/>
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144 directives.
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145 Otherwise such a browser is considered ancient.
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146 If a request does not provide the <header>User-Agent</header> field
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147 in the header, a browser is treated as not being listed.
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148 </para>
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149
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150 </directive>
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151
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152
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153 <directive name="modern_browser_value">
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154 <syntax><value>string</value></syntax>
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155 <default>1</default>
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156 <context>http</context>
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157 <context>server</context>
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158 <context>location</context>
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159
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160 <para>
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161 Sets a value for the <var>$modern_browser</var> variables.
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162 </para>
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163
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164 </directive>
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165
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166 </section>
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167
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168 </module>