Mercurial > hg > nginx-site

annotate xml/ru/docs/http/ngx_http_headers_module.xml @ 102:c76a257f3fd4

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The directive name is now automatically printed in <default> and <syntax>. Specifying <default> is made non-optional. Visible changes: - "types" and "proxy_set_header" get proper defaults (not yet displayed nicely); - "fastcgi_hide_header", "fastcgi_ignore_headers", "fastcgi_pass_header", "proxy_hide_header", "proxy_ignore_headers", and "proxy_pass_header" now have their (empty) defaults documented; - mentions of "fastcgi_redirect_errors" and "proxy_redirect_errors" which are long unsupported were removed.
author Ruslan Ermilov <ru@nginx.com>
date Wed, 19 Oct 2011 05:15:24 +0000
parents 1d315ef37215
children 40eec261c2a6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 <?xml version="1.0" encoding="utf-8"?>
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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="Директивы модуля ngx_http_headers_module"
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6 link="/ru/docs/http/ngx_http_headers_module.html"
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7 lang="ru">
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8
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9 <section name="" id="summary">
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10
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11 <para>
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12 Модуль ngx_http_headers_module позволяет выдавать строки "Expires"
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13 и "Cache-Control" и добавлять произвольные строки в заголовке ответа.
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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 <section name="Примеры конфигурации" id="example">
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19
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20 <para>
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21 <example>
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22 expires 24h;
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23 expires modified +24h;
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24 expires @24h;
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25 expires 0;
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26 expires -1;
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27 expires epoch;
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28 add_header Cache-Control private;
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29 </example>
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30 </para>
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31
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32 </section>
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33
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34
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35 <section name="Директивы" id="directives">
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36
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37 <directive name="add_header">
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38 <syntax><value>название значение</value></syntax>
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39 <default/>
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40 <context>http, server, location</context>
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41
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42 <para>
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43 Директива добавляет строку в заголовке ответа при условии, что код ответа
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44 равен 200, 204, 301, 302 или 304.
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45 В значении можно использовать переменные.
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46 </para>
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47
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48 </directive>
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49
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50
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51 <directive name="expires">
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52 <syntax><value>[modified]</value> <value>[время|epoch|max|off]</value></syntax>
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53 <default>off</default>
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54 <context>http, server, location</context>
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55
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56 <para>
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57 Разрешает или запрещает добавлять или менять строки "Expires"
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58 и "Cache-Control" в заголовке ответа.
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59 В качестве параметра можно задать положительное или отрицательное
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60 <link doc="../syntax.xml">время</link>.
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61 </para>
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62
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63 <para>
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64 Время в строке "Expires" получается как сумма текущего времени
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65 и времени, заданного в директиве.
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66 Если используется параметр "modified" (0.7.0, 0.6.32),
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67 то время получается как сумма
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68 времени модификации файла и времени, заданного в директиве.
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69 </para>
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70
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71 <para>
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72 Кроме того, с помощью префикса "@" можно задать время суток (0.7.9, 0.6.34):
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73 <example>
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74 expires @15h30m;
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75 </example>
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76 </para>
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77
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78 <para>
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79 Параметр "epoch" означает абсолютное время 1 января 1970 года 00:00:01 GMT.
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80 Содержимое строки "Cache-Control" зависит от знака заданного времени:
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81 <list type="bullet">
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82
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83 <listitem>
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84 отрицательное время — "Cache-Control: no-cache".
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85 </listitem>
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86
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87 <listitem>
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88 положительное время или равное нулю — "Cache-Control: max-age=#",
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89 где "#" - это время в секундах, заданное в директиве.
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90 </listitem>
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91
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92 </list>
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93 </para>
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94
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95 <para>
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96 Параметр "max" задаёт время 31 декабря 2037 23:55:55 GMT для строки "Expires"
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97 и 10 лет для строки "Cache-Control".
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98 </para>
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99
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100 <para>
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101 Параметр "off" запрещает добавлять или менять строки "Expires"
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102 и "Cache-Control" в заголовке ответа.
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103 </para>
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104
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105 </directive>
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106
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107 </section>
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108
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109 </module>