annotate xml/ru/docs/stream/ngx_stream_js_module.xml @ 1862:621daf1b77d0

Restricted context of js_include directive to http and stream only.
author Yaroslav Zhuravlev <yar@nginx.com>
date Tue, 13 Dec 2016 17:51:59 +0300
parents 36cbfff92c6d
children b93b0689f13b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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15632fc2d548 Documented http and stream nginScript modules.
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1 <?xml version="1.0"?>
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2
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3 <!--
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4 Copyright (C) Nginx, Inc.
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5 -->
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6
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7 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd">
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8
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9 <module name="Модуль ngx_stream_js_module"
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10 link="/ru/docs/stream/ngx_stream_js_module.html"
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11 lang="ru"
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12 rev="5">
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13
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14 <section id="summary">
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15
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16 <para>
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17 Модуль <literal>ngx_stream_js_module</literal> позволяет задавать
1853
8868945bbe97 Use non-breakable space before the "em" dash.
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18 обработчики на <link doc="../njs_about.xml">nginScript</link> —
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19 подмножестве языка JavaScript.
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20 </para>
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21
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22 <para>
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23 По умолчанию этот модуль не собирается, его необходимо собрать с
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24 модулем nginScript с помощью конфигурационного параметра
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25 <literal>--add_module</literal>:
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26 <example>
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27 ./configure --add-module=<value>path-to-njs</value>/nginx
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28 </example>
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29 <link url="http://hg.nginx.org/njs">Репозиторий</link>
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30 модуля nginScript можно клонировать следующей командой
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31 (необходим клиент <link url="https://www.mercurial-scm.org">Mercurial</link>):
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32 <example>
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33 hg clone http://hg.nginx.org/njs
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34 </example>
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35 Модуль также можно собрать как
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36 <link doc="../ngx_core_module.xml" id="load_module">динамический</link>:
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37 <example>
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38 ./configure --add-dynamic_module=<value>path-to-njs</value>/nginx
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39 </example>
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40 </para>
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41
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42 </section>
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43
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44
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45 <section id="issues" name="Известные проблемы">
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46
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47 <para>
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48 Модуль экспериментальный, поэтому возможно всё.
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49 </para>
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50
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51 </section>
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52
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53
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54 <section id="example" name="Пример конфигурации">
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55
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56 <para>
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57 <example>
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58 stream {
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59 js_include stream.js;
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60
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61 js_set $foo foo;
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62 js_set $bar bar;
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63
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64 server {
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65 listen 12345;
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66
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67 js_preread qux;
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68 return foo;
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69 }
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70
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71 server {
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72 listen 12346;
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73
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74 js_access xyz;
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75 proxy_pass 127.0.0.1:8000;
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76 js_filter baz;
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77 }
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78 }
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79
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80 http {
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81 server {
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82 listen 8000;
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83 location / {
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84 return 200 $http_foo\n;
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85 }
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86 }
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87 }
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88 </example>
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89 </para>
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90
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91 <para>
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92 Файл <path>stream.js</path>:
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93 <example>
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94 var req = '';
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95 var matched = 0;
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96 var line = '';
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97
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98 function qux(s) {
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99 n = s.buffer.indexOf('\n');
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100 if (n == -1) {
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101 return s.AGAIN;
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102 }
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103
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104 line = s.buffer.substr(0, n);
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105 }
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106
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107 function foo(s) {
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108 return line;
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109 }
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110
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111 function bar(s) {
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112 var v = s.variables;
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113 s.log("hello from bar() handler!");
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114 return "foo-var" + v.remote_port + "; pid=" + v.pid;
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115 }
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116
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117 // Фильтр обрабатывает один буфер за вызов.
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118 // Буфер недоступен в s.buffer для
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119 // чтения и записи. Вызывается в обоих направлениях.
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120
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121 function baz(s) {
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122 if (s.fromUpstream || matched) {
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123 return;
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124 }
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125
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126 // Отключение определённых адресов.
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127
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128 if (s.remoteAddress.match('^192.*')) {
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129 return s.ERROR;
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130 }
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131
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132 // Чтение строки HTTP-запроса.
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133 // Получение байт в 'req' до того как
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134 // будет прочитана строка запроса. Очистка текущего буфера
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135 // для отключения вывода.
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136
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137 req = req + s.buffer;
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138 s.buffer = '';
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139
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140 n = req.search('\n');
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141
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142 if (n != -1) {
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143 // Вставка нового HTTP-заголовка.
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144 var rest = req.substr(n + 1);
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145 req = req.substr(0, n + 1);
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146
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147 addr = s.remoteAddress;
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148
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149 s.log('req:' + req);
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150 s.log('rest:' + rest);
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151
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152 // Вывод результата и пропуск дальнейшей
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153 // обработки.
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154
15632fc2d548 Documented http and stream nginScript modules.
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155 s.buffer = req + 'Foo: addr_' + addr + '\r\n' + rest;
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
156 matched = 1;
15632fc2d548 Documented http and stream nginScript modules.
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157 }
15632fc2d548 Documented http and stream nginScript modules.
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158 }
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159
15632fc2d548 Documented http and stream nginScript modules.
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160 function xyz(s) {
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161 if (s.remoteAddress.match('^192.*')) {
15632fc2d548 Documented http and stream nginScript modules.
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162 return s.ABORT;
15632fc2d548 Documented http and stream nginScript modules.
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163 }
15632fc2d548 Documented http and stream nginScript modules.
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164 }
15632fc2d548 Documented http and stream nginScript modules.
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165 </example>
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166 </para>
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167
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168 </section>
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169
15632fc2d548 Documented http and stream nginScript modules.
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170
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diff changeset
171 <section id="directives" name="Директивы">
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172
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173 <directive name="js_access">
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174 <syntax><value>функция</value></syntax>
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175 <default/>
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176 <context>stream</context>
15632fc2d548 Documented http and stream nginScript modules.
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177 <context>server</context>
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178
15632fc2d548 Documented http and stream nginScript modules.
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179 <para>
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180 Задаёт функцию nginScript, которая будет вызываться в
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diff changeset
181 <link doc="stream_processing.xml" id="access_phase">access</link>-фазе.
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182 </para>
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183
15632fc2d548 Documented http and stream nginScript modules.
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184 </directive>
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185
15632fc2d548 Documented http and stream nginScript modules.
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186
15632fc2d548 Documented http and stream nginScript modules.
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187 <directive name="js_filter">
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diff changeset
188 <syntax><value>функция</value></syntax>
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189 <default/>
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190 <context>stream</context>
15632fc2d548 Documented http and stream nginScript modules.
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191 <context>server</context>
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192
15632fc2d548 Documented http and stream nginScript modules.
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193 <para>
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194 Задаёт фильтр данных.
1840
15632fc2d548 Documented http and stream nginScript modules.
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195 </para>
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196
15632fc2d548 Documented http and stream nginScript modules.
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197 </directive>
15632fc2d548 Documented http and stream nginScript modules.
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198
15632fc2d548 Documented http and stream nginScript modules.
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199
15632fc2d548 Documented http and stream nginScript modules.
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200 <directive name="js_include">
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3492eb9b8138 Translated http and stream js modules into Russian.
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diff changeset
201 <syntax><value>файл</value></syntax>
1840
15632fc2d548 Documented http and stream nginScript modules.
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202 <default/>
15632fc2d548 Documented http and stream nginScript modules.
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203 <context>stream</context>
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204
15632fc2d548 Documented http and stream nginScript modules.
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205 <para>
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diff changeset
206 Задаёт файл, который позволяет
1844
f56626ce9c40 Changed JavaScript to nginScript.
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diff changeset
207 задавать обработчики server и переменных на nginScript.
1840
15632fc2d548 Documented http and stream nginScript modules.
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208 </para>
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209
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
210 </directive>
15632fc2d548 Documented http and stream nginScript modules.
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parents:
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211
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
212
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
213 <directive name="js_preread">
1843
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diff changeset
214 <syntax><value>функция</value></syntax>
1840
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215 <default/>
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216 <context>stream</context>
15632fc2d548 Documented http and stream nginScript modules.
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217 <context>server</context>
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218
15632fc2d548 Documented http and stream nginScript modules.
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219 <para>
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220 Задаёт функцию nginScript, которая будет вызываться в
1843
3492eb9b8138 Translated http and stream js modules into Russian.
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diff changeset
221 <link doc="stream_processing.xml" id="preread_phase">preread</link>-фазе.
1840
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
222 </para>
15632fc2d548 Documented http and stream nginScript modules.
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223
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
224 </directive>
15632fc2d548 Documented http and stream nginScript modules.
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225
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
226
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
227 <directive name="js_set">
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
228 <syntax>
1843
3492eb9b8138 Translated http and stream js modules into Russian.
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diff changeset
229 <value>$переменная</value> <value>функция</value></syntax>
1840
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
230 <default/>
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
231 <context>stream</context>
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
232
15632fc2d548 Documented http and stream nginScript modules.
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233 <para>
1844
f56626ce9c40 Changed JavaScript to nginScript.
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diff changeset
234 Задаёт функцию nginScript для указанной переменной.
1840
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
235 </para>
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
236
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
237 </directive>
15632fc2d548 Documented http and stream nginScript modules.
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238
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
239 </section>
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
240
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
241
1843
3492eb9b8138 Translated http and stream js modules into Russian.
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diff changeset
242 <section id="properties" name="Свойства объекта сессии">
1840
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243 <para>
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diff changeset
244 Каждый stream-обработчик nginScript получает один аргумент:
1843
3492eb9b8138 Translated http and stream js modules into Russian.
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parents: 1840
diff changeset
245 объект stream-сессии.
1840
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
246 </para>
15632fc2d548 Documented http and stream nginScript modules.
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247
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
248 <para>
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parents: 1840
diff changeset
249 Объект сессии имеет следующие свойства:
1840
15632fc2d548 Documented http and stream nginScript modules.
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250
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
251 <list type="tag">
15632fc2d548 Documented http and stream nginScript modules.
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parents:
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252
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
253 <tag-name><literal>remoteAddress</literal></tag-name>
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
254 <tag-desc>
1843
3492eb9b8138 Translated http and stream js modules into Russian.
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parents: 1840
diff changeset
255 адрес клиента, только чтение
1840
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
256 </tag-desc>
15632fc2d548 Documented http and stream nginScript modules.
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parents:
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257
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
258 <tag-name><literal>eof</literal></tag-name>
15632fc2d548 Documented http and stream nginScript modules.
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259 <tag-desc>
1843
3492eb9b8138 Translated http and stream js modules into Russian.
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diff changeset
260 логическое свойство,
3492eb9b8138 Translated http and stream js modules into Russian.
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parents: 1840
diff changeset
261 true, если текущий буфер является последним буфером,
3492eb9b8138 Translated http and stream js modules into Russian.
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parents: 1840
diff changeset
262 только чтение
1840
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parents:
diff changeset
263 </tag-desc>
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parents:
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264
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
265 <tag-name><literal>fromUpstream</literal></tag-name>
15632fc2d548 Documented http and stream nginScript modules.
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266 <tag-desc>
1843
3492eb9b8138 Translated http and stream js modules into Russian.
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diff changeset
267 логическое свойство,
3492eb9b8138 Translated http and stream js modules into Russian.
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parents: 1840
diff changeset
268 true, если текущий буфер является буфером от проксируемого сервера к клиенту,
3492eb9b8138 Translated http and stream js modules into Russian.
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diff changeset
269 только чтение
1840
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diff changeset
270 </tag-desc>
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271
15632fc2d548 Documented http and stream nginScript modules.
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272 <tag-name><literal>buffer</literal></tag-name>
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273 <tag-desc>
1843
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diff changeset
274 текущий буфер, доступен для записи
1840
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275 </tag-desc>
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parents:
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276
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
277 <tag-name><literal>variables{}</literal></tag-name>
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parents:
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278 <tag-desc>
1843
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parents: 1840
diff changeset
279 объект переменных nginx, только чтение
1840
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diff changeset
280 </tag-desc>
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parents:
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281
15632fc2d548 Documented http and stream nginScript modules.
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parents:
diff changeset
282 <tag-name><literal>OK</literal></tag-name>
15632fc2d548 Documented http and stream nginScript modules.
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283 <tag-desc>
1843
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diff changeset
284 код <literal>OK</literal>
1840
15632fc2d548 Documented http and stream nginScript modules.
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diff changeset
285 </tag-desc>
15632fc2d548 Documented http and stream nginScript modules.
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parents:
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286
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287 <tag-name><literal>DECLINED</literal></tag-name>
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288 <tag-desc>
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289 код <literal>DECLINED</literal>
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290 </tag-desc>
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291
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292 <tag-name><literal>AGAIN</literal></tag-name>
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293 <tag-desc>
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294 код <literal>AGAIN</literal>
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295 </tag-desc>
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296
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297 <tag-name><literal>ERROR</literal></tag-name>
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298 <tag-desc>
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299 код <literal>ERROR</literal>
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300 </tag-desc>
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301
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302 <tag-name><literal>ABORT</literal></tag-name>
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303 <tag-desc>
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304 код <literal>ABORT</literal>
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305 </tag-desc>
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306 </list>
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307 </para>
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308
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309 <para>
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310 Объект сессии имеет следующие методы:
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311
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312 <list type="tag">
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313
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314 <tag-name><literal>log(<value>строка</value>)</literal></tag-name>
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315 <tag-desc>
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316 записывает отправленную <value>строку</value> в лог-файл ошибок
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317 </tag-desc>
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318 </list>
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319 </para>
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320
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321 </section>
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322
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323 </module>