Mercurial > hg > nginx-site
annotate xml/ru/docs/http/ngx_http_headers_module.xml @ 76:4a4caa566120
Russian documentation import.
Changes in module.dtd: <example> now allowed to contain <value> and
<emphasis> elements (we need this to show important parts in examples),
less strict checking of <directive> syntax (we don't want to fully
document some directives, notably deprecated ones).
Known issues:
1. <syntax> elements are preserved as is, they will require manual conversion
(likely to some not-yet-existed format a la DocBook cmdsynopsis, as
currently used one seems to be incomplete);
2. <value> no longer corresponds to replaceable content, and it's use in
examples isn't correct;
3. <link doc="document#fragment"> doesn't work with current xslt, either
should be supported or changed to <link doc="document" id="fragment">.
The following files are intentionally omitted: maillists.xml (support.xml
should be used instead), experimental.xml (obsolete), faq.xml (conflicts
with existing one, needs discussion).
Not yet linked to site.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 11 Oct 2011 12:57:50 +0000 |
parents | |
children | 1d315ef37215 |
rev | line source |
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76
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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>add_header <value>название значение</value></syntax> |
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39 <default>нет</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>expires <value>[modified]</value> <value>[время|epoch|max|off]</value></syntax> |
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53 <default>expires 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> |