Mercurial > hg > nginx-site
annotate xml/en/docs/http/ngx_http_charset_module.xml @ 795:41363f013cc9
Documented the recently added "gzip" and "flush" parameters of the "access_log"
directive.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Tue, 25 Dec 2012 15:23:24 +0000 |
parents | 764fbac1b8b4 |
children | 417dc982362e |
rev | line source |
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1 <?xml version="1.0"?> |
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2 |
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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_charset_module" |
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11 link="/en/docs/http/ngx_http_charset_module.html" |
589 | 12 lang="en" |
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_charset_module</literal> module adds the specified |
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19 charset to the <header>Content-Type</header> response header field. |
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20 In addition, the module can convert data from one charset to another, |
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21 with some limitations: |
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22 <list type="bullet"> |
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23 |
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24 <listitem> |
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25 conversion is performed one way — from server to client, |
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26 </listitem> |
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27 |
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28 <listitem> |
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29 only single-byte charsets can be converted |
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30 </listitem> |
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31 |
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32 <listitem> |
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33 or single-byte charsets to/from UTF-8. |
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34 </listitem> |
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35 |
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36 </list> |
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37 </para> |
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38 |
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39 </section> |
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40 |
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41 |
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42 <section id="example" name="Example Configuration"> |
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43 |
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44 <para> |
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45 <example> |
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46 include conf/koi-win; |
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47 |
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48 charset windows-1251; |
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49 source_charset koi8-r; |
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50 </example> |
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51 </para> |
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52 |
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53 </section> |
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54 |
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55 |
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56 <section id="directives" name="Directives"> |
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57 |
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58 <directive name="charset"> |
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59 <syntax><value>charset</value> | <literal>off</literal></syntax> |
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60 <default>off</default> |
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61 <context>http</context> |
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62 <context>server</context> |
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63 <context>location</context> |
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64 <context>if in location</context> |
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65 |
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66 <para> |
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67 Adds the specified charset to the <header>Content-Type</header> |
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68 response header field. |
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69 If this charset is different from the charset specified |
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70 in the <link id="source_charset"/> directive, a conversion is performed. |
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71 </para> |
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72 |
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73 <para> |
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74 The parameter <literal>off</literal> cancels the addition of charset |
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75 to the <header>Content-Type</header> response header field. |
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76 </para> |
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77 |
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78 <para> |
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79 A charset can be defined with a variable: |
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80 <example> |
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81 charset $charset; |
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82 </example> |
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83 In such a case, all possible values of a variable need to be present |
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84 in the configuration at least once in the form of the |
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85 <link id="charset_map"/>, <link id="charset"/>, or |
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86 <link id="source_charset"/> directives. |
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87 For <literal>utf-8</literal>, <literal>windows-1251</literal>, and |
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88 <literal>koi8-r</literal> charsets it is sufficient to include the files |
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89 <path>conf/koi-win</path>, <path>conf/koi-utf</path>, and |
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90 <path>conf/win-utf</path> into configuration. |
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91 For other charsets, simply making a fictitious conversion table works, |
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92 for example: |
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93 <example> |
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94 charset_map iso-8859-5 _ { } |
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95 </example> |
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96 </para> |
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97 |
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98 <para> |
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99 In addition, charset can also be set in the |
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100 <header>X-Accel-Charset</header> response header field. |
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101 This ability can be disabled using the |
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102 <link doc="ngx_http_proxy_module.xml" id="proxy_ignore_headers"/> |
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103 and |
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104 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_ignore_headers"/> |
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105 directives. |
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106 </para> |
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107 |
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108 </directive> |
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109 |
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110 |
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111 <directive name="charset_map"> |
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112 <syntax block="yes"><value>charset1</value> <value>charset2</value></syntax> |
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113 <default/> |
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114 <context>http</context> |
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115 |
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116 <para> |
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117 Describes the conversion table from one charset to another. |
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118 A reverse conversion table is built using the same data. |
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119 Character codes are given in hexadecimal. |
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120 Missing characters in the range 80-FF are replaced with “<literal>?</literal>”. |
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121 When converting from UTF-8, characters missing in a one-byte charset |
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122 are replaced with “<literal>&#XXXX;</literal>”. |
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123 </para> |
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124 |
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125 <para> |
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126 Example: |
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127 <example> |
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128 charset_map koi8-r windows-1251 { |
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129 C0 FE ; # small yu |
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130 C1 E0 ; # small a |
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131 C2 E1 ; # small b |
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132 C3 F6 ; # small ts |
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133 ... |
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134 } |
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135 </example> |
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136 </para> |
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137 |
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138 <para> |
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139 When describing a conversion table to UTF-8, codes for the UTF-8 charset should |
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140 be given in the second column, for example: |
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141 <example> |
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142 charset_map koi8-r utf-8 { |
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143 C0 D18E ; # small yu |
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144 C1 D0B0 ; # small a |
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145 C2 D0B1 ; # small b |
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146 C3 D186 ; # small ts |
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147 ... |
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148 } |
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149 </example> |
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150 </para> |
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151 |
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152 <para> |
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153 Full conversion tables from <literal>koi8-r</literal> to |
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154 <literal>windows-1251</literal>, and from <literal>koi8-r</literal> and |
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155 <literal>windows-1251</literal> to <literal>utf-8</literal> |
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156 are provided in the distribution files <path>conf/koi-win</path>, |
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157 <path>conf/koi-utf</path>, and <path>conf/win-utf</path>. |
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158 </para> |
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159 |
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160 </directive> |
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161 |
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162 |
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163 <directive name="charset_types"> |
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164 <syntax><value>mime-type</value> ...</syntax> |
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165 <default>text/html text/xml text/plain text/vnd.wap.wml |
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166 application/x-javascript application/rss+xml</default> |
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167 <context>http</context> |
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168 <context>server</context> |
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169 <context>location</context> |
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170 <appeared-in>0.7.9</appeared-in> |
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171 |
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172 <para> |
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173 Enables module processing in responses with the specified MIME types |
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174 in addition to “<literal>text/html</literal>”. |
546
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175 The special value “<literal>*</literal>” matches any MIME type (0.8.29). |
350
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176 </para> |
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177 |
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178 </directive> |
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179 |
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180 |
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181 <directive name="override_charset"> |
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182 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
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183 <default>off</default> |
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184 <context>http</context> |
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185 <context>server</context> |
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186 <context>location</context> |
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187 <context>if in location</context> |
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188 |
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189 <para> |
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190 Determines if a conversion should be performed for answers |
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191 received from a proxied or FastCGI server, |
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192 if the answers already carry a charset in the <header>Content-Type</header> |
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193 response header field. |
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194 If conversion is enabled, a charset specified in the received |
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195 response is used as a source charset. |
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196 <note> |
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197 It should be noted that if a response was received in a subrequest |
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198 then conversion from the response charset to the main request charset |
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199 is always performed regardless of the <literal>override_charset</literal> |
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200 directive setting. |
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201 </note> |
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202 </para> |
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203 |
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204 </directive> |
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205 |
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206 |
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207 <directive name="source_charset"> |
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208 <syntax><value>charset</value></syntax> |
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209 <default/> |
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210 <context>http</context> |
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211 <context>server</context> |
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212 <context>location</context> |
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213 <context>if in location</context> |
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214 |
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215 <para> |
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216 Defines the source charset of a response. |
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217 If this charset is different from the charset specified |
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218 in the <link id="charset"/> directive, a conversion is performed. |
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219 </para> |
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220 |
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221 </directive> |
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222 |
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223 </section> |
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224 |
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225 </module> |