Mercurial > hg > nginx-site
annotate xml/en/docs/http/ngx_http_proxy_module.xml @ 504:695f83494c19
Emphasized on what the "updating" parameter of the "proxy_cache_use_stale"
directive achieves. Referenced the "proxy_cache_lock" directive from there,
which has similar effect when populating a new cache element.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Tue, 24 Apr 2012 06:54:47 +0000 |
parents | cbc2d1b51cb6 |
children | 657848837328 |
rev | line source |
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1 <?xml version="1.0"?> |
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2 |
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3 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> |
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4 |
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5 <module name="Module ngx_http_proxy_module" |
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6 link="/en/docs/http/ngx_http_proxy_module.html" |
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7 lang="en"> |
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8 |
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9 <section id="summary"> |
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10 |
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11 <para> |
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12 The <literal>ngx_http_proxy_module</literal> module allows to pass |
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13 requests to another server. |
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14 </para> |
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15 |
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16 </section> |
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17 |
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18 |
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19 <section id="example" name="Example Configuration"> |
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20 |
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21 <para> |
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22 <example> |
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23 location / { |
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24 proxy_pass http://localhost:8000; |
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25 proxy_set_header Host $host; |
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26 proxy_set_header X-Real-IP $remote_addr; |
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27 } |
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28 </example> |
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29 </para> |
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30 |
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31 </section> |
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32 |
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33 |
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34 <section id="directives" name="Directives"> |
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35 |
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36 <directive name="proxy_buffer_size"> |
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37 <syntax><value>size</value></syntax> |
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38 <default>4k|8k</default> |
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39 <context>http</context> |
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40 <context>server</context> |
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41 <context>location</context> |
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42 |
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43 <para> |
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44 Sets <value>size</value> of the buffer used for reading the first part |
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45 of a response received from the proxied server. |
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46 This part usually contains a small response header. |
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47 By default, the buffer size is equal to the size of one |
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48 buffer set by the <link id="proxy_buffers"/> directive. |
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49 It can be made smaller however. |
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50 </para> |
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51 |
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52 </directive> |
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53 |
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54 |
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55 <directive name="proxy_buffering"> |
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56 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
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57 <default>on</default> |
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58 <context>http</context> |
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59 <context>server</context> |
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60 <context>location</context> |
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61 |
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62 <para> |
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63 Enables or disables buffering of responses from the proxied server. |
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64 </para> |
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65 |
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66 <para> |
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67 When buffering is enabled, nginx receives a response from the proxied server |
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68 as soon as possible, saving it into buffers set by the |
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69 <link id="proxy_buffer_size"/> and <link id="proxy_buffers"/> directives. |
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70 If the whole response does not fit into memory, part of it can be saved |
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71 to a <link id="proxy_temp_path">temporary file</link> on disk. |
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72 Writes to temporary files are controlled by the |
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73 <link id="proxy_max_temp_file_size"/> and |
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74 <link id="proxy_temp_file_write_size"/> directives. |
281
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75 </para> |
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76 |
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77 <para> |
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78 When buffering is disabled, a response is passed to a client synchronously, |
362 | 79 immediately as it is received. |
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80 nginx will not try to read the whole response from the proxied server. |
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81 The maximum size of the data that nginx can receive from the server |
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82 at a time is set by the <link id="proxy_buffer_size"/> directive. |
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83 </para> |
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84 |
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85 </directive> |
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86 |
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87 |
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88 <directive name="proxy_buffers"> |
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89 <syntax><value>number</value> <value>size</value></syntax> |
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90 <default>8 4k|8k</default> |
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91 <context>http</context> |
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92 <context>server</context> |
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93 <context>location</context> |
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94 |
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95 <para> |
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96 Sets the <value>number</value> and <value>size</value> of |
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97 buffers used for reading a response from the proxied server, |
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98 for a single connection. |
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99 By default, the buffer size is equal to one memory page. |
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100 This is either 4K or 8K, depending on a platform. |
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101 </para> |
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102 |
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103 </directive> |
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104 |
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105 |
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106 <directive name="proxy_busy_buffers_size"> |
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107 <syntax><value>size</value></syntax> |
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108 <default>8k|16k</default> |
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109 <context>http</context> |
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110 <context>server</context> |
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111 <context>location</context> |
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112 |
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113 <para> |
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114 When <link id="proxy_buffering">buffering</link> of responses from the proxied |
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115 server is enabled, limits the total <value>size</value> of buffers that |
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116 can be busy sending a response to the client while the response is not |
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117 yet fully read. |
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118 In the mean time, the rest of the buffers can be used for reading a response |
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119 and, if needed, buffering part of a response to a temporary file. |
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120 By default, <value>size</value> is limited by two buffers set by the |
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121 <link id="proxy_buffer_size"/> and <link id="proxy_buffers"/> directives. |
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122 </para> |
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123 |
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124 </directive> |
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125 |
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126 |
281
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127 <directive name="proxy_cache"> |
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128 <syntax><value>zone</value> | <literal>off</literal></syntax> |
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129 <default>off</default> |
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130 <context>http</context> |
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131 <context>server</context> |
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132 <context>location</context> |
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133 |
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134 <para> |
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135 Defines a zone used for caching. |
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136 The same zone can be used in several places. |
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137 The <literal>off</literal> parameter disables caching inherited |
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138 from the previous configuration level. |
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139 </para> |
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140 |
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141 </directive> |
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142 |
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143 |
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144 <directive name="proxy_cache_bypass"> |
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145 <syntax><value>string</value> ...</syntax> |
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146 <default/> |
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147 <context>http</context> |
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148 <context>server</context> |
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149 <context>location</context> |
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150 |
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151 <para> |
294 | 152 Defines conditions under which the response will not be taken from a cache. |
281
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153 If at least one value of the string parameters is not empty and is not |
294 | 154 equal to “0” then the response will not be taken from the cache: |
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155 <example> |
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156 proxy_cache_bypass $cookie_nocache $arg_nocache$arg_comment; |
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157 proxy_cache_bypass $http_pragma $http_authorization; |
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158 </example> |
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159 Can be used along with the <link id="proxy_no_cache"/> directive. |
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160 </para> |
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161 |
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162 </directive> |
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163 |
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164 |
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165 <directive name="proxy_cache_key"> |
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166 <syntax><value>string</value></syntax> |
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167 <default>$scheme$proxy_host$request_uri</default> |
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168 <context>http</context> |
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169 <context>server</context> |
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170 <context>location</context> |
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171 |
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172 <para> |
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173 Defines a key for caching, for example |
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174 <example> |
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175 proxy_cache_key "$host$request_uri $cookie_user"; |
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176 </example> |
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177 By default, the directive’s value is close to the string |
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178 <example> |
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179 proxy_cache_key $scheme$proxy_host$uri$is_args$args; |
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180 </example> |
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181 </para> |
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182 |
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183 </directive> |
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184 |
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185 |
302
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186 <directive name="proxy_cache_lock"> |
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187 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
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188 <default>off</default> |
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189 <context>http</context> |
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190 <context>server</context> |
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191 <context>location</context> |
310
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192 <appeared-in>1.1.12</appeared-in> |
302
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193 |
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194 <para> |
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195 When enabled, only one request at a time will be allowed to populate |
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196 a new cache element identified according to the <link id="proxy_cache_key"/> |
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197 directive by passing a request to a proxied server. |
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198 Other requests of the same cache element will either wait |
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199 for a response to appear in the cache, or the cache lock for |
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200 this element to be released, up to the time set by the |
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201 <link id="proxy_cache_lock_timeout"/> directive. |
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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="proxy_cache_lock_timeout"> |
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208 <syntax><value>time</value></syntax> |
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209 <default>5s</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 <appeared-in>1.1.12</appeared-in> |
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214 |
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215 <para> |
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216 Sets a timeout for <link id="proxy_cache_lock"/>. |
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217 </para> |
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218 |
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219 </directive> |
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220 |
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221 |
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222 <directive name="proxy_cache_min_uses"> |
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223 <syntax><value>number</value></syntax> |
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224 <default>1</default> |
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225 <context>http</context> |
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226 <context>server</context> |
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227 <context>location</context> |
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228 |
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229 <para> |
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230 Sets the <value>number</value> of requests after which the response |
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231 will be cached. |
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232 </para> |
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233 |
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234 </directive> |
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235 |
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236 |
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237 <directive name="proxy_cache_path"> |
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238 <syntax> |
364 | 239 <value>path</value> |
240 [<literal>levels</literal>=<value>levels</value>] | |
241 <literal>keys_zone</literal>=<value>name</value>:<value>size</value> | |
242 [<literal>inactive</literal>=<value>time</value>] | |
243 [<literal>max_size</literal>=<value>size</value>]</syntax> | |
281
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244 <default/> |
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245 <context>http</context> |
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246 |
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247 <para> |
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248 Sets path and other parameters of a cache. |
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249 Cache data are stored in files. |
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250 Both the key and file name in a cache are a result of |
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251 applying the MD5 function to the proxied URL. |
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252 |
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253 The <literal>levels</literal> parameter defines hierarchy levels of a cache. |
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254 For example, in the following configuration |
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255 <example> |
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256 proxy_cache_path /data/nginx/cache levels=1:2 keys_zone=one:10m; |
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257 </example> |
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258 file names in a cache will look like this: |
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259 <example> |
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260 /data/nginx/cache/<emphasis>c</emphasis>/<emphasis>29</emphasis>/b7f54b2df7773722d382f4809d650<emphasis>29c</emphasis> |
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261 </example> |
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262 </para> |
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263 |
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264 <para> |
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265 A cached response is first written to a temporary file, then a file is renamed. |
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266 Starting from version 0.8.9 temporary files and the cache can be put on |
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267 different file systems but be aware that in this case a file is copied |
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268 across two file systems instead of the cheap rename operation. |
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269 It is thus recommended that for any given location both cache and a directory |
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270 holding temporary files set by the <link id="proxy_temp_path"/> directive |
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271 are put on the same file system. |
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272 </para> |
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273 |
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274 <para> |
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275 In addition, all active keys and information about data are stored |
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276 in a shared memory zone, whose <value>name</value> and <value>size</value> |
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277 are configured by the <literal>keys_zone</literal> parameter. |
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278 Cached data that are not accessed during the time specified by the |
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279 <literal>inactive</literal> parameter get removed from the cache |
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280 regardless of their freshness. |
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281 By default, <literal>inactive</literal> is set to 10 minutes. |
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282 </para> |
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283 |
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284 <para> |
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285 The special process “cache manager” monitors the maximum cache size set |
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286 by the <literal>max_size</literal> parameter; |
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287 when this size is exceeded it removes the least recently used data. |
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288 </para> |
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289 |
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290 </directive> |
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291 |
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292 |
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293 <directive name="proxy_cache_use_stale"> |
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294 <syntax> |
364 | 295 <literal>error</literal> | |
296 <literal>timeout</literal> | | |
297 <literal>invalid_header</literal> | | |
298 <literal>updating</literal> | | |
299 <literal>http_500</literal> | | |
300 <literal>http_502</literal> | | |
301 <literal>http_503</literal> | | |
302 <literal>http_504</literal> | | |
303 <literal>http_404</literal> | | |
304 <literal>off</literal> | |
305 ...</syntax> | |
281
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306 <default>off</default> |
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307 <context>http</context> |
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308 <context>server</context> |
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309 <context>location</context> |
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310 |
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311 <para> |
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312 If an error occurs while working with the proxied server it is possible |
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313 to use a stale cached response. |
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314 This directives determines in which cases it is permitted. |
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315 The directive’s parameters match those of the |
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316 <link id="proxy_next_upstream"/> directive. |
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317 </para> |
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318 |
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319 <para> |
281
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320 Additionally, the <literal>updating</literal> parameter permits |
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321 to use a stale cached response if it is currently being updated. |
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322 This allows to minimize the number of accesses to proxied servers |
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323 when updating cached data. |
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324 </para> |
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325 |
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326 <para> |
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327 To minimize the number of accesses to proxied servers when |
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328 populating a new cache element, the <link id="proxy_cache_lock"/> |
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329 directive can be used. |
281
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330 </para> |
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331 |
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332 </directive> |
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333 |
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334 |
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335 <directive name="proxy_cache_valid"> |
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336 <syntax>[<value>code</value> ...] <value>time</value></syntax> |
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337 <default/> |
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338 <context>http</context> |
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339 <context>server</context> |
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340 <context>location</context> |
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341 |
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342 <para> |
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343 Sets caching time for different response codes. |
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344 For example, the following directives |
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345 <example> |
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346 proxy_cache_valid 200 302 10m; |
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347 proxy_cache_valid 404 1m; |
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348 </example> |
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349 set 10 minutes of caching for responses with codes 200 and 302, |
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350 and 1 minute for responses with code 404. |
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351 </para> |
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352 |
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353 <para> |
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354 If only caching <value>time</value> is specified |
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355 <example> |
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356 proxy_cache_valid 5m; |
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357 </example> |
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358 then only 200, 301, and 302 responses are cached. |
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359 </para> |
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360 |
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361 <para> |
294 | 362 In addition, it can be specified to cache any responses using the |
281
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363 <literal>any</literal> parameter: |
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364 <example> |
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365 proxy_cache_valid 200 302 10m; |
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366 proxy_cache_valid 301 1h; |
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367 proxy_cache_valid any 1m; |
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368 </example> |
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369 </para> |
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370 |
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371 </directive> |
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372 |
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373 |
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374 <directive name="proxy_connect_timeout"> |
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375 <syntax><value>time</value></syntax> |
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376 <default>60s</default> |
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377 <context>http</context> |
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378 <context>server</context> |
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379 <context>location</context> |
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380 |
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381 <para> |
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382 Defines a timeout for establishing a connection with the proxied server. |
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383 It should be noted that this timeout cannot usually exceed 75 seconds. |
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384 </para> |
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385 |
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386 </directive> |
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387 |
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388 |
417
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389 <directive name="proxy_cookie_domain"> |
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390 <syntax><literal>off</literal></syntax> |
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391 <syntax><value>domain</value> <value>replacement</value></syntax> |
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392 <default>off</default> |
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393 <context>http</context> |
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394 <context>server</context> |
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395 <context>location</context> |
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396 <appeared-in>1.1.15</appeared-in> |
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397 |
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398 <para> |
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399 Sets a text that should be changed in the <literal>domain</literal> |
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400 attribute of the <header>Set-Cookie</header> header fields of a |
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401 proxied server response. |
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402 Suppose a proxied server returned the header field |
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403 <header>Set-Cookie</header> with the attribute |
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404 “<literal>domain=localhost</literal>”. |
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405 The directive |
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406 <example> |
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407 proxy_cookie_domain localhost example.org; |
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408 </example> |
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409 will rewrite this attribute to |
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410 “<literal>domain=example.org</literal>”. |
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411 </para> |
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412 |
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413 <para> |
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414 A dot at the beginning of the <value>domain</value> and |
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415 <value>replacement</value> strings, and the <literal>domain</literal> |
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416 attribute is ignored. |
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417 Matching is case-insensitive. |
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418 </para> |
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419 |
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420 <para> |
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421 The strings <value>domain</value> and <value>replacement</value> |
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422 can contain variables: |
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423 <example> |
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424 proxy_cookie_domain www.$host $host; |
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425 </example> |
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426 </para> |
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427 |
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428 <para> |
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429 A directive can also be specified using regular expressions. |
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430 In this case, <value>domain</value> should start from |
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431 the “<literal>~</literal>” symbol. |
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432 A regular expression can contain named and positional captures, |
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433 and <value>replacement</value> can reference them: |
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434 <example> |
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435 proxy_cookie_domain ~\.(?P<sl_domain>[-0-9a-z]+\.[a-z]+)$ $sl_domain; |
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436 </example> |
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437 </para> |
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438 |
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439 <para> |
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440 There could be several <literal>proxy_cookie_domain</literal> directives: |
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441 <example> |
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442 proxy_cookie_domain localhost example.org; |
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443 proxy_cookie_domain ~\.([a-z]+\.[a-z]+)$ $1; |
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444 </example> |
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445 </para> |
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446 |
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447 <para> |
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448 The <literal>off</literal> parameter cancels all |
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449 <literal>proxy_cookie_domain</literal> directives on the current level: |
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450 <example> |
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451 proxy_cookie_domain off; |
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452 proxy_cookie_domain localhost example.org; |
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453 proxy_cookie_domain www.example.org example.org; |
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454 </example> |
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455 </para> |
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456 |
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457 </directive> |
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458 |
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459 |
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460 <directive name="proxy_cookie_path"> |
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461 <syntax><literal>off</literal></syntax> |
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462 <syntax><value>path</value> <value>replacement</value></syntax> |
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463 <default>off</default> |
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464 <context>http</context> |
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465 <context>server</context> |
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466 <context>location</context> |
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467 <appeared-in>1.1.15</appeared-in> |
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468 |
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469 <para> |
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470 Sets a text that should be changed in the <literal>path</literal> |
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471 attribute of the <header>Set-Cookie</header> header fields of a |
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472 proxied server response. |
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473 Suppose a proxied server returned the header field |
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474 <header>Set-Cookie</header> with the attribute |
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475 “<literal>path=/two/some/uri/</literal>”. |
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476 The directive |
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477 <example> |
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478 proxy_cookie_path /two/ /; |
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479 </example> |
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480 will rewrite this attribute to |
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481 “<literal>path=/some/uri/</literal>”. |
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482 </para> |
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483 |
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484 <para> |
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485 The strings <value>path</value> and <value>replacement</value> |
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486 can contain variables: |
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487 <example> |
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488 proxy_cookie_path $uri /some$uri; |
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489 </example> |
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490 </para> |
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491 |
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492 <para> |
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493 A directive can also be specified using regular expressions. |
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494 In this case, <value>path</value> should either start from |
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495 the “<literal>~</literal>” symbol for a case-sensitive matching, |
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496 or from the “<literal>~*</literal>” symbols for case-insensitive |
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497 matching. |
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498 A regular expression can contain named and positional captures, |
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499 and <value>replacement</value> can reference them: |
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500 <example> |
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501 proxy_cookie_path ~*^/user/([^/]+) /u/$1; |
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502 </example> |
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503 </para> |
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504 |
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505 <para> |
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506 There could be several <literal>proxy_cookie_path</literal> directives: |
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507 <example> |
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508 proxy_cookie_path /one/ /; |
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509 proxy_cookie_path / /two/; |
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510 </example> |
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511 </para> |
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512 |
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513 <para> |
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514 The <literal>off</literal> parameter cancels all |
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515 <literal>proxy_cookie_path</literal> directives on the current level: |
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516 <example> |
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517 proxy_cookie_path off; |
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518 proxy_cookie_path /two/ /; |
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519 proxy_cookie_path ~*^/user/([^/]+) /u/$1; |
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520 </example> |
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521 </para> |
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522 |
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523 </directive> |
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524 |
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525 |
281
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526 <directive name="proxy_hide_header"> |
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527 <syntax><value>field</value></syntax> |
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528 <default/> |
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529 <context>http</context> |
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530 <context>server</context> |
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531 <context>location</context> |
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532 |
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533 <para> |
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534 By default, |
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535 nginx does not pass the header fields <header>Date</header>, |
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536 <header>Server</header>, <header>X-Pad</header>, and |
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537 <header>X-Accel-...</header> from the response of a proxied |
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538 server to a client. |
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|
539 The <literal>proxy_hide_header</literal> directive sets additional fields |
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|
540 that will not be passed. |
294 | 541 If, on the contrary, the passing of fields needs to be permitted, |
281
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542 the <link id="proxy_pass_header"/> directive can be used. |
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543 </para> |
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544 |
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545 </directive> |
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diff
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|
546 |
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547 |
316
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548 <directive name="proxy_http_version"> |
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549 <syntax><literal>1.0</literal> | <literal>1.1</literal></syntax> |
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550 <default>1.0</default> |
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|
551 <context>http</context> |
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diff
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|
552 <context>server</context> |
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|
553 <context>location</context> |
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554 <appeared-in>1.1.4</appeared-in> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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|
555 |
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|
556 <para> |
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557 Sets the HTTP protocol version for proxying. |
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558 By default, version 1.0 is used. |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
559 Version 1.1 is recommended for use with |
1fb1c077658b
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|
560 <link doc="ngx_http_upstream_module.xml" id="keepalive"/> |
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561 connections. |
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562 </para> |
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|
563 |
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diff
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|
564 </directive> |
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diff
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565 |
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diff
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|
566 |
281
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567 <directive name="proxy_ignore_client_abort"> |
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Translated current version of ngx_http_proxy_module documentation into English.
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diff
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|
568 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
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parents:
diff
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|
569 <default>off</default> |
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570 <context>http</context> |
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571 <context>server</context> |
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|
572 <context>location</context> |
7142ddd2764c
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diff
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|
573 |
7142ddd2764c
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diff
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|
574 <para> |
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parents:
diff
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|
575 Determines should the connection with a proxied server be |
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576 closed if a client closes a connection without waiting |
294 | 577 for a response. |
281
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578 </para> |
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diff
changeset
|
579 |
7142ddd2764c
Translated current version of ngx_http_proxy_module documentation into English.
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diff
changeset
|
580 </directive> |
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diff
changeset
|
581 |
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parents:
diff
changeset
|
582 |
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583 <directive name="proxy_ignore_headers"> |
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584 <syntax><value>field</value> ...</syntax> |
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585 <default/> |
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586 <context>http</context> |
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587 <context>server</context> |
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588 <context>location</context> |
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589 |
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590 <para> |
294 | 591 Disables processing of certain response header fields from the proxied server. |
281
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592 The following fields can be ignored: <header>X-Accel-Redirect</header>, |
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593 <header>X-Accel-Expires</header>, <header>X-Accel-Limit-Rate</header> (1.1.6), |
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594 <header>X-Accel-Buffering</header> (1.1.6), |
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595 <header>X-Accel-Charset</header> (1.1.6), <header>Expires</header>, |
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596 <header>Cache-Control</header>, and <header>Set-Cookie</header> (0.8.44). |
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597 </para> |
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598 |
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599 </directive> |
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600 |
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601 |
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602 <directive name="proxy_intercept_errors"> |
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603 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
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604 <default>off</default> |
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605 <context>http</context> |
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606 <context>server</context> |
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607 <context>location</context> |
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608 |
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609 <para> |
297 | 610 Determines whether proxied responses with codes greater than or equal |
611 to 400 should be passed to a client or be redirected to nginx for processing | |
281
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612 using the <link doc="ngx_http_core_module.xml" id="error_page"/> directive. |
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613 </para> |
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614 |
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615 </directive> |
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616 |
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617 |
405
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618 <directive name="proxy_max_temp_file_size"> |
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619 <syntax><value>size</value></syntax> |
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620 <default>1024m</default> |
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621 <context>http</context> |
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622 <context>server</context> |
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623 <context>location</context> |
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624 |
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625 <para> |
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626 When <link id="proxy_buffering">buffering</link> of responses from the proxied |
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627 server is enabled, and the whole response does not fit into memory buffers |
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628 set by the <link id="proxy_buffer_size"/> and <link id="proxy_buffers"/> |
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629 directives, part of a response can be saved to a temporary file. |
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630 This directive sets the maximum <value>size</value> of a temporary file. |
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631 The size of data written to a temporary file at a time is set |
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632 by the <link id="proxy_temp_file_write_size"/> directive. |
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633 </para> |
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634 |
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635 <para> |
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636 Value of zero disables buffering of responses to temporary files. |
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637 </para> |
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638 |
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639 </directive> |
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640 |
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641 |
281
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642 <directive name="proxy_next_upstream"> |
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643 <syntax> |
364 | 644 <literal>error</literal> | |
645 <literal>timeout</literal> | | |
646 <literal>invalid_header</literal> | | |
647 <literal>http_500</literal> | | |
648 <literal>http_502</literal> | | |
649 <literal>http_503</literal> | | |
650 <literal>http_504</literal> | | |
651 <literal>http_404</literal> | | |
652 <literal>off</literal> | |
653 ...</syntax> | |
281
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654 <default>error timeout</default> |
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655 <context>http</context> |
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656 <context>server</context> |
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657 <context>location</context> |
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658 |
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659 <para> |
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660 Specifies in which cases a request should be passed to the next server: |
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661 <list type="tag"> |
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662 |
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663 <tag-name><literal>error</literal></tag-name> |
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664 <tag-desc>an error occurred while establishing a connection with the |
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665 server, passing it a request, or reading the response header;</tag-desc> |
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666 |
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667 <tag-name><literal>timeout</literal></tag-name> |
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668 <tag-desc>a timeout has occurred while establishing a connection with the |
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669 server, passing it a request, or reading the response header;</tag-desc> |
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670 |
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671 <tag-name><literal>invalid_header</literal></tag-name> |
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672 <tag-desc>a server returned empty or invalid response;</tag-desc> |
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673 |
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674 <tag-name><literal>http_500</literal></tag-name> |
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675 <tag-desc>a server returned a response with the code 500;</tag-desc> |
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676 |
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677 <tag-name><literal>http_502</literal></tag-name> |
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678 <tag-desc>a server returned a response with the code 502;</tag-desc> |
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679 |
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680 <tag-name><literal>http_503</literal></tag-name> |
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681 <tag-desc>a server returned a response with the code 503;</tag-desc> |
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682 |
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683 <tag-name><literal>http_504</literal></tag-name> |
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684 <tag-desc>a server returned a response with the code 504;</tag-desc> |
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685 |
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686 <tag-name><literal>http_404</literal></tag-name> |
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687 <tag-desc>a server returned a response with the code 404;</tag-desc> |
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688 |
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689 <tag-name><literal>off</literal></tag-name> |
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690 <tag-desc>disables passing a request to the next server.</tag-desc> |
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691 |
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692 </list> |
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693 </para> |
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694 |
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695 <para> |
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696 It should be understood that passing a request to the next server is |
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697 only possible if a client was not sent anything yet. |
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698 That is, if an error or a timeout occurs in the middle of |
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699 transferring a response, fixing this is impossible. |
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700 </para> |
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701 |
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702 </directive> |
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703 |
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704 |
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705 <directive name="proxy_no_cache"> |
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|
706 <syntax><value>string</value> ...</syntax> |
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707 <default/> |
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|
708 <context>http</context> |
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709 <context>server</context> |
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|
710 <context>location</context> |
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|
711 |
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|
712 <para> |
294 | 713 Defines conditions under which the response will not be saved to a cache. |
281
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714 If at least one value of the string parameters is not empty and is not |
294 | 715 equal to “0” then the response will not be saved: |
281
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716 <example> |
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717 proxy_no_cache $cookie_nocache $arg_nocache$arg_comment; |
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718 proxy_no_cache $http_pragma $http_authorization; |
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719 </example> |
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720 Can be used along with the <link id="proxy_cache_bypass"/> directive. |
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721 </para> |
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722 |
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|
723 </directive> |
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|
724 |
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|
725 |
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|
726 <directive name="proxy_pass"> |
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727 <syntax><value>URL</value></syntax> |
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728 <default/> |
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|
729 <context>location</context> |
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730 <context>if in location</context> |
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731 <context>limit_except</context> |
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|
732 |
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|
733 <para> |
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734 Sets an address of the proxied server and a URI that maps a location. |
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|
735 An address can be specified as a domain name or an address, and a port, |
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736 for example, |
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|
737 <example> |
351
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738 proxy_pass http://localhost:8000/uri/; |
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739 </example> |
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|
740 or as a UNIX-domain socket path: |
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741 <example> |
351
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742 proxy_pass http://unix:/tmp/backend.socket:/uri/; |
281
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743 </example> |
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|
744 here a path is specified after the word “<literal>unix</literal>” |
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|
745 and enclosed in two colons. |
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|
746 </para> |
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|
747 |
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|
748 <para> |
294 | 749 If a domain name resolves to several addresses, all of them will be |
281
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750 used in a round-robin fashion. |
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|
751 In addition, an address can be specified as a |
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|
752 <link doc="ngx_http_upstream_module.xml">server group</link>. |
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|
753 </para> |
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|
754 |
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|
755 <para> |
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|
756 When passing a request to the server, part of a URI matching the location |
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757 is replaced by a URI specified in the <literal>proxy_pass</literal> directive. |
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|
758 This rule has two exceptions where a replacement location cannot be |
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|
759 defined: |
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|
760 <list type="bullet"> |
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761 |
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|
762 <listitem> |
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763 when a location is specified using a regular expression; |
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|
764 </listitem> |
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|
765 |
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|
766 <listitem> |
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|
767 if a URI is changed using the |
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|
768 <link doc="ngx_http_rewrite_module.xml" id="rewrite"/> directive |
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|
769 inside a proxied location, and this same configuration will be |
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|
770 used to process a request (<literal>break</literal>): |
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771 <example> |
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772 location /name/ { |
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|
773 rewrite /name/([^/]+) /users?name=$1 break; |
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|
774 proxy_pass http://127.0.0.1; |
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|
775 } |
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|
776 </example> |
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|
777 In these cases a URI is passed without mapping. |
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|
778 </listitem> |
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|
779 |
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|
780 </list> |
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|
781 </para> |
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|
782 |
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|
783 <para> |
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784 It can also be specified that a request URI should be passed unchanged, |
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785 in the same form it was sent by the client, not the processed form. |
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|
786 During a processing |
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|
787 <list type="bullet"> |
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788 |
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789 <listitem> |
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790 two or more adjacent slashes are replaced by one: “//” — “/”; |
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|
791 </listitem> |
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|
792 |
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793 <listitem> |
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794 links to the current directory get removed: “/./” — “/”; |
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795 </listitem> |
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796 |
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797 <listitem> |
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798 links to the parent directory get removed: “/dir/../” — “/”. |
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799 </listitem> |
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800 |
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801 </list> |
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802 </para> |
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803 |
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804 <para> |
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805 If a URI should be passed unchanged then the server URL should be specified |
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|
806 without a URI in the <literal>proxy_pass</literal> directive: |
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807 <example> |
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808 location /some/path/ { |
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|
809 proxy_pass http://127.0.0.1; |
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|
810 } |
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|
811 </example> |
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812 </para> |
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|
813 |
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|
814 <para> |
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815 Server name, its port, and passed URI can be specified using variables: |
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816 <example> |
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817 proxy_pass http://$host$uri; |
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818 </example> |
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819 or like this: |
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820 <example> |
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821 proxy_pass $request; |
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822 </example> |
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823 </para> |
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824 |
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|
825 <para> |
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|
826 In this case the server name is searched among the described |
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|
827 <link doc="ngx_http_upstream_module.xml">server groups</link>, |
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|
828 and if not found is determined using a |
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829 <link doc="ngx_http_core_module.xml" id="resolver"/>. |
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|
830 </para> |
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|
831 |
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|
832 </directive> |
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|
833 |
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|
834 |
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|
835 <directive name="proxy_pass_header"> |
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|
836 <syntax><value>field</value></syntax> |
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837 <default/> |
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|
838 <context>http</context> |
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|
839 <context>server</context> |
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840 <context>location</context> |
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841 |
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842 <para> |
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843 Permits to pass <link id="proxy_hide_header">otherwise disabled</link> header |
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844 fields from a proxied server to a client. |
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845 </para> |
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846 |
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847 </directive> |
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848 |
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849 |
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850 <directive name="proxy_read_timeout"> |
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851 <syntax><value>time</value></syntax> |
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852 <default>60s</default> |
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853 <context>http</context> |
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854 <context>server</context> |
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855 <context>location</context> |
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856 |
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857 <para> |
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858 Defines a timeout for reading a response from the proxied server. |
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859 A timeout is only set between two successive read operations, |
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860 not for the transmission of the whole response. |
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861 If a proxied server does not transmit anything within this time, |
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862 a connection is closed. |
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863 </para> |
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864 |
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865 </directive> |
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866 |
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867 |
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868 <directive name="proxy_redirect"> |
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869 <syntax><literal>default</literal></syntax> |
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870 <syntax><literal>off</literal></syntax> |
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871 <syntax><value>redirect</value> <value>replacement</value></syntax> |
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872 <default>default</default> |
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873 <context>http</context> |
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874 <context>server</context> |
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875 <context>location</context> |
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|
876 |
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|
877 <para> |
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878 Sets a text that should be changed in the header fields |
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879 <header>Location</header> and <header>Refresh</header> of a response |
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880 from the proxied server. |
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881 Suppose a proxied server returned the header field |
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882 “<literal>Location: http://localhost:8000/two/some/uri/</literal>”. |
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883 The directive |
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884 <example> |
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885 proxy_redirect http://localhost:8000/two/ http://frontend/one/; |
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886 </example> |
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887 will rewrite this string to |
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888 “<literal>Location: http://frontend/one/some/uri/</literal>”. |
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889 </para> |
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|
890 |
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|
891 <para> |
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892 A server name may be omitted from the <value>replacement</value> string: |
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893 <example> |
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894 proxy_redirect http://localhost:8000/two/ /; |
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895 </example> |
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896 then the primary server’s name and a port, if different from 80, |
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897 will be substituted. |
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898 </para> |
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899 |
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900 <para> |
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901 The default replacement specified by the <literal>default</literal> parameter |
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902 uses the parameters of the |
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903 <link doc="ngx_http_core_module.xml" id="location"/> and |
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|
904 <link id="proxy_pass"/> directives. |
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|
905 Hence, the two configurations below are equivalent: |
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906 <example> |
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907 location /one/ { |
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908 proxy_pass http://upstream:port/two/; |
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909 proxy_redirect default; |
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910 </example> |
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911 |
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912 <example> |
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913 location /one/ { |
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914 proxy_pass http://upstream:port/two/; |
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915 proxy_redirect http://upstream:port/two/ /one/; |
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916 </example> |
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917 The <literal>default</literal> parameter is not permitted if |
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918 <link id="proxy_pass"/> is specified using variables. |
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919 </para> |
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|
920 |
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921 <para> |
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922 A <value>replacement</value> string can contain variables: |
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923 <example> |
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924 proxy_redirect http://localhost:8000/ http://$host:$server_port/; |
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925 </example> |
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926 </para> |
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927 |
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928 <para> |
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929 A <value>redirect</value> can also contain (1.1.11) variables: |
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930 <example> |
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931 proxy_redirect http://$proxy_host:8000/ /; |
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932 </example> |
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933 </para> |
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934 |
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935 <para> |
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936 A directive can be specified (1.1.11) using regular expressions. |
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937 In this case, <value>redirect</value> should either start from |
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938 the “<literal>~</literal>” symbol for a case-sensitive matching, |
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939 or from the “<literal>~*</literal>” symbols for case-insensitive |
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940 matching. |
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|
941 A regular expression can contain named and positional captures, |
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942 and <value>replacement</value> can reference them: |
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943 <example> |
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944 proxy_redirect ~^(http://[^:]+):\d+(/.+)$ $1$2; |
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945 proxy_redirect ~*/user/([^/]+)/(.+)$ http://$1.example.com/$2; |
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946 </example> |
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947 </para> |
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948 |
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|
949 <para> |
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950 There could be several <literal>proxy_redirect</literal> directives: |
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951 <example> |
351
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952 proxy_redirect default; |
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953 proxy_redirect http://localhost:8000/ /; |
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954 proxy_redirect http://www.example.com/ /; |
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955 </example> |
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956 </para> |
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957 |
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958 <para> |
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959 The <literal>off</literal> parameter cancels all |
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960 <literal>proxy_redirect</literal> directives on the current level: |
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961 <example> |
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962 proxy_redirect off; |
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963 proxy_redirect default; |
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964 proxy_redirect http://localhost:8000/ /; |
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965 proxy_redirect http://www.example.com/ /; |
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966 </example> |
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967 </para> |
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968 |
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969 <para> |
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970 Using this directive it is also possible to add host names to relative |
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971 redirects issued by a proxied server: |
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972 <example> |
351
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973 proxy_redirect / /; |
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974 </example> |
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975 </para> |
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976 |
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977 </directive> |
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978 |
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979 |
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980 <directive name="proxy_send_timeout"> |
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981 <syntax><value>time</value></syntax> |
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982 <default>60s</default> |
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983 <context>http</context> |
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984 <context>server</context> |
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985 <context>location</context> |
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986 |
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987 <para> |
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988 Sets a timeout for transmitting a request to the proxied server. |
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989 A timeout is only set between two successive write operations, |
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990 not for the transmission of the whole request. |
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991 If a proxied server does not receive anything within this time, |
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992 a connection is closed. |
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993 </para> |
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994 |
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995 </directive> |
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996 |
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|
997 |
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998 <directive name="proxy_set_header"> |
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999 <syntax><value>field</value> <value>value</value></syntax> |
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1000 <default>Host $proxy_host</default> |
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1001 <default>Connection close</default> |
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1002 <context>http</context> |
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1003 <context>server</context> |
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1004 <context>location</context> |
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1005 |
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1006 <para> |
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1007 Allows to redefine or append fields to the request header |
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1008 passed to the proxied server. |
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1009 A <value>value</value> can contain text, variables, and their combination. |
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1010 These directives are inherited from the previous level if and |
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1011 only if there are no |
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1012 <literal>proxy_set_header</literal> |
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1013 directives defined on the current level. |
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1014 By default, only two fields are redefined: |
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1015 <example> |
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1016 proxy_set_header Host $proxy_host; |
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1017 proxy_set_header Connection close; |
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1018 </example> |
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1019 </para> |
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1020 |
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1021 <para> |
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1022 An unchanged <header>Host</header> request header field can be passed like this: |
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1023 <example> |
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1024 proxy_set_header Host $http_host; |
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1025 </example> |
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1026 </para> |
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1027 |
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1028 <para> |
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1029 However, if this field is not present in a client request header then |
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1030 nothing will be passed. |
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1031 In such a case it is better to use the <var>$host</var> variable—its |
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1032 value equals the server name in the <header>Host</header> request header |
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1033 field, or the primary server name if this field is not present: |
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1034 <example> |
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1035 proxy_set_header Host $host; |
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1036 </example> |
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1037 </para> |
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1038 |
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1039 <para> |
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1040 In addition, a server name can be passed together with a port of the |
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1041 proxied server: |
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1042 <example> |
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1043 proxy_set_header Host $host:$proxy_port; |
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1044 </example> |
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1045 </para> |
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1046 |
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1047 <para> |
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1048 If the value of a header field is an empty string then this |
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1049 field will not be passed to a proxied server: |
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1050 <example> |
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1051 proxy_set_header Accept-Encoding ""; |
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1052 </example> |
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1053 </para> |
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1054 |
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1055 </directive> |
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Ruslan Ermilov <ru@nginx.com>
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diff
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|
1056 |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1057 |
7142ddd2764c
Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1058 <directive name="proxy_ssl_session_reuse"> |
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Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1059 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1060 <default>on</default> |
7142ddd2764c
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1061 <context>http</context> |
7142ddd2764c
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parents:
diff
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|
1062 <context>server</context> |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1063 <context>location</context> |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1064 |
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Ruslan Ermilov <ru@nginx.com>
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diff
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|
1065 <para> |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1066 Determines whether SSL sessions can be reused when working with |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1067 the proxied server. |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1068 If the errors |
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diff
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|
1069 “<literal>SSL3_GET_FINISHED:digest check failed</literal>” |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1070 appear in the logs, try to disable session reuse. |
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Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
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|
1071 </para> |
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|
1072 |
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Ruslan Ermilov <ru@nginx.com>
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|
1073 </directive> |
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parents:
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|
1074 |
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Ruslan Ermilov <ru@nginx.com>
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|
1075 |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1076 <directive name="proxy_store"> |
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Ruslan Ermilov <ru@nginx.com>
parents:
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1077 <syntax> |
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1078 <literal>on</literal> | |
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1079 <literal>off</literal> | |
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parents:
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1080 <value>string</value></syntax> |
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|
1081 <default>off</default> |
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1082 <context>http</context> |
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1083 <context>server</context> |
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|
1084 <context>location</context> |
7142ddd2764c
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|
1085 |
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parents:
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|
1086 <para> |
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parents:
diff
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|
1087 Enables saving of files to a disk. |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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1088 The <literal>on</literal> parameter saves files with paths |
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diff
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|
1089 corresponding to the directives |
7142ddd2764c
Translated current version of ngx_http_proxy_module documentation into English.
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parents:
diff
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|
1090 <link doc="ngx_http_core_module.xml" id="alias"/> or |
7142ddd2764c
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diff
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|
1091 <link doc="ngx_http_core_module.xml" id="root"/>. |
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parents:
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|
1092 The <literal>off</literal> parameter disables saving of files. |
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parents:
diff
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|
1093 In addition, the file name can be set explicitly using the |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1094 <value>string</value> with variables: |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1095 <example> |
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|
1096 proxy_store /data/www$original_uri; |
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parents:
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|
1097 </example> |
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|
1098 </para> |
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|
1099 |
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|
1100 <para> |
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1101 The modification time of files is set according to the received |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1102 <header>Last-Modified</header> response header field. |
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parents:
diff
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|
1103 A response is first written to a temporary file, then a file is renamed. |
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parents:
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|
1104 Starting from version 0.8.9 temporary files and the persistent store |
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parents:
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|
1105 can be put on different file systems but be aware that in this case |
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parents:
diff
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|
1106 a file is copied across two file systems instead of the cheap rename operation. |
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parents:
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|
1107 It is thus recommended that for any given location both saved files and a |
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Ruslan Ermilov <ru@nginx.com>
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diff
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|
1108 directory holding temporary files set by the <link id="proxy_temp_path"/> |
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parents:
diff
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|
1109 directive are put on the same file system. |
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parents:
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1110 </para> |
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1111 |
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|
1112 <para> |
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|
1113 This directive can be used to create local copies of static unchangeable |
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|
1114 files, e.g.: |
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parents:
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|
1115 <example> |
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|
1116 location /images/ { |
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parents:
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|
1117 root /data/www; |
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parents:
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|
1118 open_file_cache_errors off; |
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parents:
diff
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|
1119 error_page 404 = /fetch$uri; |
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parents:
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|
1120 } |
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|
1121 |
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parents:
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|
1122 location /fetch/ { |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1123 internal; |
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|
1124 |
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parents:
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|
1125 proxy_pass http://backend/; |
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|
1126 proxy_store on; |
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parents:
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|
1127 proxy_store_access user:rw group:rw all:r; |
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parents:
diff
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|
1128 proxy_temp_path /data/temp; |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1129 |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1130 alias /data/www/; |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1131 } |
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Ruslan Ermilov <ru@nginx.com>
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|
1132 </example> |
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Ruslan Ermilov <ru@nginx.com>
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|
1133 </para> |
7142ddd2764c
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|
1134 |
7142ddd2764c
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parents:
diff
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|
1135 <para> |
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parents:
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|
1136 or like this: |
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parents:
diff
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|
1137 <example> |
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parents:
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|
1138 location /images/ { |
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parents:
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|
1139 root /data/www; |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1140 error_page 404 = @fetch; |
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parents:
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|
1141 } |
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|
1142 |
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|
1143 location @fetch { |
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|
1144 internal; |
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|
1145 |
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|
1146 proxy_pass http://backend; |
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|
1147 proxy_store on; |
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|
1148 proxy_store_access user:rw group:rw all:r; |
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|
1149 proxy_temp_path /data/temp; |
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|
1150 |
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|
1151 root /data/www; |
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|
1152 } |
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|
1153 </example> |
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|
1154 </para> |
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|
1155 |
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|
1156 </directive> |
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|
1157 |
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|
1158 |
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|
1159 <directive name="proxy_store_access"> |
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|
1160 <syntax><value>users</value>:<value>permissions</value> ...</syntax> |
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|
1161 <default>user:rw</default> |
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|
1162 <context>http</context> |
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|
1163 <context>server</context> |
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|
1164 <context>location</context> |
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|
1165 |
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|
1166 <para> |
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|
1167 Sets access permissions for newly created files and directories, e.g.: |
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|
1168 <example> |
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|
1169 proxy_store_access user:rw group:rw all:r; |
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|
1170 </example> |
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|
1171 </para> |
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parents:
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1172 |
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1173 <para> |
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1174 If any <literal>group</literal> or <literal>all</literal> access permissions |
7142ddd2764c
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parents:
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|
1175 are specified then <literal>user</literal> permissions may be omitted: |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1176 <example> |
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parents:
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1177 proxy_store_access group:rw all:r; |
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1178 </example> |
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|
1179 </para> |
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1180 |
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1181 </directive> |
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parents:
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1182 |
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1183 |
405
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1184 <directive name="proxy_temp_file_write_size"> |
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1185 <syntax><value>size</value></syntax> |
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1186 <default>8k|16k</default> |
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1187 <context>http</context> |
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1188 <context>server</context> |
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1189 <context>location</context> |
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1190 |
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1191 <para> |
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1192 Limits the <value>size</value> of data written to a temporary file |
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1193 at a time, when buffering of responses from the proxied server |
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1194 to temporary files is enabled. |
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1195 By default, <value>size</value> is limited by two buffers set by the |
781b23ba3b0a
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1196 <link id="proxy_buffer_size"/> and <link id="proxy_buffers"/> directives. |
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Documented the following directives: proxy_busy_buffers_size,
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1197 The maximum size of a temporary file is set by the |
781b23ba3b0a
Documented the following directives: proxy_busy_buffers_size,
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|
1198 <link id="proxy_max_temp_file_size"/> directive. |
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1199 </para> |
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1200 |
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Documented the following directives: proxy_busy_buffers_size,
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1201 </directive> |
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|
1202 |
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Documented the following directives: proxy_busy_buffers_size,
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1203 |
281
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|
1204 <directive name="proxy_temp_path"> |
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Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1205 <syntax> |
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parents:
diff
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|
1206 <value>path</value> |
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Translated current version of ngx_http_proxy_module documentation into English.
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parents:
diff
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|
1207 [<value>level1</value> |
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parents:
diff
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|
1208 [<value>level2</value> |
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Translated current version of ngx_http_proxy_module documentation into English.
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parents:
diff
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|
1209 [<value>level3</value>]]]</syntax> |
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Translated current version of ngx_http_proxy_module documentation into English.
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parents:
diff
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|
1210 <default>proxy_temp</default> |
7142ddd2764c
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1211 <context>http</context> |
7142ddd2764c
Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1212 <context>server</context> |
7142ddd2764c
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1213 <context>location</context> |
7142ddd2764c
Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1214 |
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Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1215 <para> |
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1216 Defines a directory for storing temporary files |
405
781b23ba3b0a
Documented the following directives: proxy_busy_buffers_size,
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364
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|
1217 with data received from proxied servers. |
281
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parents:
diff
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|
1218 Up to three-level subdirectory hierarchy can be used underneath the specified |
7142ddd2764c
Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1219 directory. |
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Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1220 For example, in the following configuration |
7142ddd2764c
Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1221 <example> |
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Translated current version of ngx_http_proxy_module documentation into English.
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parents:
diff
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|
1222 proxy_temp_path /spool/nginx/proxy_temp 1 2; |
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Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1223 </example> |
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parents:
diff
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|
1224 a temporary file might look like this: |
7142ddd2764c
Translated current version of ngx_http_proxy_module documentation into English.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1225 <example> |
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|
1226 /spool/nginx/proxy_temp/<emphasis>7</emphasis>/<emphasis>45</emphasis>/00000123<emphasis>457</emphasis> |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
1227 </example> |
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diff
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|
1228 </para> |
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|
1229 |
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|
1230 </directive> |
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diff
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|
1231 |
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|
1232 </section> |
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|
1233 |
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|
1234 |
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|
1235 <section id="variables" name="Embedded Variables"> |
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Ruslan Ermilov <ru@nginx.com>
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|
1236 |
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|
1237 <para> |
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|
1238 The <literal>ngx_http_proxy_module</literal> module supports embedded variables |
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parents:
diff
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|
1239 that can be used to compose headers using the |
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diff
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|
1240 <link id="proxy_set_header"/> directive: |
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|
1241 <list type="tag"> |
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|
1242 |
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|
1243 <tag-name><var>$proxy_host</var></tag-name> |
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|
1244 <tag-desc>name and port of a proxied server;</tag-desc> |
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|
1245 |
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|
1246 <tag-name><var>$proxy_port</var></tag-name> |
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|
1247 <tag-desc>port of a proxied server;</tag-desc> |
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|
1248 |
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|
1249 <tag-name><var>$proxy_add_x_forwarded_for</var></tag-name> |
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|
1250 <tag-desc>the <header>X-Forwarded-For</header> client request header field |
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Translated current version of ngx_http_proxy_module documentation into English.
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|
1251 with the <var>$remote_addr</var> variable appended to it, separated by a comma. |
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|
1252 If the <header>X-Forwarded-For</header> field is not present in the client |
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|
1253 request header, the <var>$proxy_add_x_forwarded_for</var> variable is equal |
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|
1254 to the <var>$remote_addr</var> variable.</tag-desc> |
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|
1255 </list> |
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|
1256 </para> |
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|
1257 |
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|
1258 </section> |
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|
1259 |
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|
1260 </module> |