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annotate xml/ru/docs/http/ngx_http_js_module.xml @ 2787:005b056c267f

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Added note about async calls for js_body_filter, js_header_filter.
author Yaroslav Zhuravlev <yar@nginx.com>
date Thu, 21 Oct 2021 15:11:56 +0100
parents 65591dd31d64
children 652356b39f0f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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_http_js_module"
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10 link="/ru/docs/http/ngx_http_js_module.html"
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11 lang="ru"
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12 rev="33">
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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_http_js_module</literal> позволяет задавать
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18 обработчики location и переменных
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19 на <link doc="../njs/index.xml">njs</link> —
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20 подмножестве языка JavaScript.
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21 </para>
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22
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23 <para>
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24 Инструкция по сборке и установке доступны
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25 <link doc="../njs/install.xml">здесь</link>.
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26 </para>
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27
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28 </section>
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29
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30
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31 <section id="example" name="Пример конфигурации">
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32
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33 <para>
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34 Пример работает начиная с версии
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35 <link doc="../njs/changes.xml" id="njs0.4.0">0.4.0</link>.
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36 <example>
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37 http {
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38 js_import http.js;
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39
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40 js_set $foo http.foo;
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41 js_set $summary http.summary;
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42 js_set $hash http.hash;
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43
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44 resolver 10.0.0.1;
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45
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46 server {
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47 listen 8000;
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48
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49 location / {
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50 add_header X-Foo $foo;
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51 js_content http.baz;
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52 }
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53
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54 location = /summary {
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55 return 200 $summary;
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56 }
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57
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58 location = /hello {
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59 js_content http.hello;
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60 }
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61
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62 # начиная с версии 0.7.0
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63 location = /fetch {
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64 js_content http.fetch;
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65 js_fetch_trusted_certificate /path/to/ISRG_Root_X1.pem;
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66 }
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67
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68 # начиная с версии 0.7.0
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69 location = /crypto {
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70 add_header Hash $hash;
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71 return 200;
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72 }
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73 }
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74 }
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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 Файл <path>http.js</path>:
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80 <example>
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81 function foo(r) {
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82 r.log("hello from foo() handler");
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83 return "foo";
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84 }
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85
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86 function summary(r) {
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87 var a, s, h;
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88
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89 s = "JS summary\n\n";
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90
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91 s += "Method: " + r.method + "\n";
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92 s += "HTTP version: " + r.httpVersion + "\n";
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93 s += "Host: " + r.headersIn.host + "\n";
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94 s += "Remote Address: " + r.remoteAddress + "\n";
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95 s += "URI: " + r.uri + "\n";
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96
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97 s += "Headers:\n";
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98 for (h in r.headersIn) {
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99 s += " header '" + h + "' is '" + r.headersIn[h] + "'\n";
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100 }
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101
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102 s += "Args:\n";
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103 for (a in r.args) {
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104 s += " arg '" + a + "' is '" + r.args[a] + "'\n";
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105 }
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106
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107 return s;
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108 }
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109
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110 function baz(r) {
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111 r.status = 200;
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112 r.headersOut.foo = 1234;
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113 r.headersOut['Content-Type'] = "text/plain; charset=utf-8";
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114 r.headersOut['Content-Length'] = 15;
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115 r.sendHeader();
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116 r.send("nginx");
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117 r.send("java");
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118 r.send("script");
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119
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120 r.finish();
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121 }
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122
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123 function hello(r) {
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124 r.return(200, "Hello world!");
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125 }
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126
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127 // начиная с версии 0.7.0
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128 async function fetch(r) {
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129 let results = await Promise.all([ngx.fetch('https://nginx.org/'),
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130 ngx.fetch('https://nginx.org/en/')]);
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131
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132 r.return(200, JSON.stringify(results, undefined, 4));
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133 }
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134
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135 // начиная с версии 0.7.0
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136 async function hash(r) {
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137 let hash = await crypto.subtle.digest('SHA-512', r.headersIn.host);
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138 r.setReturnValue(Buffer.from(hash).toString('hex'));
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139 }
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140
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141 export default {foo, summary, baz, hello, fetch, hash};
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142 </example>
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143 </para>
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144
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145 </section>
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146
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147
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148 <section id="directives" name="Директивы">
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149
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150 <directive name="js_body_filter">
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151 <syntax><value>функция</value> | <value>модуль.функция</value>
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152 [<value>buffer_type</value>=<value>строка</value> | <value>буфер</value>]</syntax>
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153 <default/>
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154 <context>location</context>
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155 <context>limit_except</context>
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156 <appeared-in>0.5.2</appeared-in>
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157
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158 <para>
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159 Задаёт функцию njs в качестве фильтра тела ответа.
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160 Функция фильтра вызывается для каждого блока данных тела ответа
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161 со следующими аргументами:
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162
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163 <list type="tag">
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164 <tag-name><literal>r</literal></tag-name>
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165 <tag-desc>
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166 объект <link doc="../njs/reference.xml" id="http">HTTP request</link>
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167 </tag-desc>
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168
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169 <tag-name><literal>data</literal></tag-name>
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170 <tag-desc>
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171 входящий блок данных
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172 может быть строкой или буфером
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173 в зависимости от значения <literal>buffer_type</literal>,
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174 по умолчанию является строкой.
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175 </tag-desc>
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176
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177 <tag-name><literal>flags</literal></tag-name>
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178 <tag-desc>
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179 объект со следующими свойствами:
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180 <list type="tag">
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181 <tag-name><literal>last</literal></tag-name>
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182 <tag-desc>
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183 логическое значение, true, если данные являются последним буфером.
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184 </tag-desc>
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185
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186 </list>
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187 </tag-desc>
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188
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189 </list>
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190 </para>
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191
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192 <para>
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193 Функция фильтра может передавать свою модифицированную версию
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194 входящего блока данных следующему фильтру тела ответа при помощи вызова
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195 <link doc="../njs/reference.xml" id="r_sendbuffer"><literal>r.sendBuffer()</literal></link>.
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196 Пример преобразования букв в нижний регистр в теле ответа:
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197 <example>
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198 function filter(r, data, flags) {
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199 r.sendBuffer(data.toLowerCase(), flags);
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200 }
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201 </example>
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202 Для отмены фильтра (блоки данных будут передаваться клиенту
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203 без вызова <literal>js_body_filter</literal>),
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204 можно использовать
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205 <link doc="../njs/reference.xml" id="r_done"><literal>r.done()</literal></link>.
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206 </para>
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207
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208 <para>
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209 Если функция фильтра изменяет длину тела ответа, то
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210 необходимо очистить заголовок ответа <header>Content-Length</header>
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211 (если присутствует) в
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212 <link id="js_header_filter"><literal>js_header_filter</literal></link>,
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213 чтобы применить поблочное кодирование.
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214 </para>
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215
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216 <para>
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217 <note>
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218 Так как обработчик <literal>js_body_filter</literal>
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219 должен сразу возвращать результат,
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220 то поддерживаются только синхронные операции,
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221 Таким образом, асинхронные операции, например
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222 <link doc="../njs/reference.xml" id="r_subrequest">r.subrequest()</link>
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223 или
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224 <link doc="../njs/reference.xml" id="settimeout">setTimeout()</link>,
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225 не поддерживаются.
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226 </note>
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227 </para>
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228
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229 </directive>
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230
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231
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232 <directive name="js_content">
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233 <syntax><value>функция</value> | <value>модуль.функция</value></syntax>
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234 <default/>
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235 <context>location</context>
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236 <context>limit_except</context>
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237
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238 <para>
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239 Задаёт функцию njs в качестве обработчика содержимого location.
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240 Начиная с версии <link doc="../njs/changes.xml" id="njs0.4.0">0.4.0</link>
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241 можно ссылаться на функцию модуля.
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242 </para>
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243
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244 </directive>
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245
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246
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247 <directive name="js_fetch_ciphers">
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248 <syntax><value>шифры</value></syntax>
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249 <default>HIGH:!aNULL:!MD5</default>
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250 <context>http</context>
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251 <context>server</context>
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252 <context>location</context>
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253 <appeared-in>0.7.0</appeared-in>
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254
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255 <para>
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256 Описывает разрешённые шифры для HTTPS-запросов
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257 при помощи <link doc="../njs/reference.xml" id="ngx_fetch">Fetch API</link>.
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258 Шифры задаются в формате, поддерживаемом библиотекой OpenSSL.
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259 </para>
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260
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261 <para>
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262 Полный список можно посмотреть с помощью команды
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263 “<command>openssl ciphers</command>”.
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264 </para>
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265
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266 </directive>
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267
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268
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269 <directive name="js_fetch_protocols">
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270 <syntax>
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271 [<literal>TLSv1</literal>]
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272 [<literal>TLSv1.1</literal>]
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273 [<literal>TLSv1.2</literal>]
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274 [<literal>TLSv1.3</literal>]</syntax>
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275 <default>TLSv1 TLSv1.1 TLSv1.2</default>
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276 <context>http</context>
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277 <context>server</context>
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278 <context>location</context>
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279 <appeared-in>0.7.0</appeared-in>
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280
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281 <para>
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282 Разрешает указанные протоколы для HTTPS-запросов
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283 при помощи <link doc="../njs/reference.xml" id="ngx_fetch">Fetch API</link>.
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284 </para>
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285
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286 </directive>
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287
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288
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289 <directive name="js_fetch_trusted_certificate">
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290 <syntax><value>файл</value></syntax>
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291 <default/>
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292 <context>http</context>
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293 <context>server</context>
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294 <context>location</context>
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295 <appeared-in>0.7.0</appeared-in>
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296
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297 <para>
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298 Задаёт <value>файл</value> с доверенными сертификатами CA в формате PEM,
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299 используемыми при
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300 <link doc="../njs/reference.xml" id="fetch_verify">проверке</link>
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301 HTTPS-сертификата
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302 при помощи <link doc="../njs/reference.xml" id="ngx_fetch">Fetch API</link>.
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303 </para>
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304
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305 </directive>
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306
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307
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308 <directive name="js_fetch_verify_depth">
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diff changeset
309 <syntax><value>число</value></syntax>
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310 <default>100</default>
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311 <context>http</context>
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312 <context>server</context>
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313 <context>location</context>
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314 <appeared-in>0.7.0</appeared-in>
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315
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316 <para>
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317 Устанавливает глубину проверки в цепочке HTTPS-сертификатов
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318 при помощи <link doc="../njs/reference.xml" id="ngx_fetch">Fetch API</link>.
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319 </para>
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320
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321 </directive>
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322
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323
2651
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324 <directive name="js_header_filter">
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diff changeset
325 <syntax><value>функция</value> | <value>модуль.функция</value></syntax>
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326 <default/>
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327 <context>location</context>
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328 <context>limit_except</context>
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diff changeset
329 <appeared-in>0.5.1</appeared-in>
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330
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331 <para>
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332 Задаёт функцию njs в качестве фильтра заголовка ответа.
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333 Директива позволяет менять произвольные поля заголовка ответа.
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334 </para>
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335
2787
005b056c267f Added note about async calls for js_body_filter, js_header_filter.
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336 <para>
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337 <note>
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diff changeset
338 Так как обработчик <literal>js_header_filter</literal>
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339 должен сразу возвращать результат,
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340 то поддерживаются только синхронные операции,
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341 Таким образом, асинхронные операции, например
005b056c267f Added note about async calls for js_body_filter, js_header_filter.
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342 <link doc="../njs/reference.xml" id="r_subrequest">r.subrequest()</link>
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343 или
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344 <link doc="../njs/reference.xml" id="settimeout">setTimeout()</link>,
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345 не поддерживаются.
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346 </note>
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347 </para>
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348
2651
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diff changeset
349 </directive>
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350
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diff changeset
351
2530
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
352 <directive name="js_import">
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
353 <syntax><value>модуль.js</value> |
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diff changeset
354 <value>имя_экспорта из модуль.js</value></syntax>
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diff changeset
355 <default/>
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
356 <context>http</context>
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diff changeset
357 <appeared-in>0.4.0</appeared-in>
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
358
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
359 <para>
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
360 Импортирует модуль, позволяющий задавать обработчики location и переменных
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
361 на njs.
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diff changeset
362 <literal>Имя_экспорта</literal> является пространством имён
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
363 при доступе к функциям модуля.
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
364 Если <literal>имя_экспорта</literal> не задано,
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diff changeset
365 то пространством имён будет являться имя модуля.
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
366 <example>
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diff changeset
367 js_import http.js;
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diff changeset
368 </example>
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
369 В примере при доступе к экспорту в качестве
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diff changeset
370 пространства имён используется имя модуля <literal>http</literal>.
2680
8751cab1d562 Corrected example description in js_import.
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parents: 2675
diff changeset
371 Если импортируемый модуль экспортирует <literal>foo()</literal>,
2530
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
372 то для доступа используется <literal>http.foo</literal>.
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
373 </para>
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
374
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
375 <para>
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diff changeset
376 Директив <literal>js_import</literal> может быть несколько.
2142
ca7568f67dee Sorted directives alphabetically.
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diff changeset
377 </para>
ca7568f67dee Sorted directives alphabetically.
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parents: 2135
diff changeset
378
ca7568f67dee Sorted directives alphabetically.
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diff changeset
379 </directive>
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diff changeset
380
ca7568f67dee Sorted directives alphabetically.
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diff changeset
381
1843
3492eb9b8138 Translated http and stream js modules into Russian.
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parents:
diff changeset
382 <directive name="js_include">
3492eb9b8138 Translated http and stream js modules into Russian.
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parents:
diff changeset
383 <syntax><value>файл</value></syntax>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
384 <default/>
3492eb9b8138 Translated http and stream js modules into Russian.
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parents:
diff changeset
385 <context>http</context>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
386
3492eb9b8138 Translated http and stream js modules into Russian.
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parents:
diff changeset
387 <para>
2530
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
388 Задаёт файл, позволяющий задавать обработчики location и переменных на njs:
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
389 <example>
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diff changeset
390 nginx.conf:
407c5bd5bffc Documented the js_import directive and corresponding changes.
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diff changeset
391 js_include http.js;
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
392 location /version {
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
393 js_content version;
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
394 }
407c5bd5bffc Documented the js_import directive and corresponding changes.
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parents: 2352
diff changeset
395
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
396 http.js:
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
397 function version(r) {
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
398 r.return(200, njs.version);
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
399 }
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
400 </example>
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
401 </para>
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
402
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
403 <para>
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
404 Директива устарела начиная с
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
405 <link doc="../njs/changes.xml" id="njs0.4.0">0.4.0</link>,
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
406 вместо неё следует использовать директиву <link id="js_import"/>.
1843
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
407 </para>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
408
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
409 </directive>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
410
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
411
2352
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
412 <directive name="js_path">
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
413 <syntax>
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
414 <value>путь</value></syntax>
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
415 <default/>
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
416 <context>http</context>
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
417 <appeared-in>0.3.0</appeared-in>
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
418
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
419 <para>
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
420 Задаёт дополнительный путь для модулей njs.
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
421 </para>
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
422
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
423 </directive>
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
424
1101e24c6d14 Documented the js_path directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2288
diff changeset
425
1843
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
426 <directive name="js_set">
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
427 <syntax>
2530
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
428 <value>$переменная</value> <value>функция</value> |
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
429 <value>модуль.функция</value></syntax>
1843
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
430 <default/>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
431 <context>http</context>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
432
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
433 <para>
2686
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
434 Задаёт <literal>функцию</literal> njs
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
435 для указанной <literal>переменной</literal>.
2530
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
436 Начиная с <link doc="../njs/changes.xml" id="njs0.4.0">0.4.0</link>
407c5bd5bffc Documented the js_import directive and corresponding changes.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2352
diff changeset
437 можно ссылаться на функцию модуля.
1843
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
438 </para>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
439
2686
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
440 <para>
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
441 Функция вызывается в момент
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
442 первого обращения к переменной для данного запроса.
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
443 Точный момент вызова функции зависит от
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
444 <link doc="../dev/development_guide.xml" id="http_phases">фазы</link>,
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
445 в которой происходит обращение к переменной.
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
446 Это можно использовать для реализации дополнительной логики,
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
447 не относящейся к вычислению переменной.
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
448 Например, если переменная указана
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
449 в директиве <link doc="ngx_http_log_module.xml" id="log_format"/>,
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
450 то её обработчик не будет выполняться до фазы записи в лог.
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
451 Этот обработчик также может использоваться для выполнения процедур
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
452 непосредственно перед освобождением запроса.
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
453 </para>
45214e5316cd Improved description of js_set.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2680
diff changeset
454
2747
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
455 <para>
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
456 <note>
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
457 Так как обработчик <literal>js_set</literal>
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
458 должен сразу возвращать результат,
2787
005b056c267f Added note about async calls for js_body_filter, js_header_filter.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2784
diff changeset
459 то поддерживаются только синхронные операции,
005b056c267f Added note about async calls for js_body_filter, js_header_filter.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2784
diff changeset
460 Таким образом, асинхронные операции, например
2747
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
461 <link doc="../njs/reference.xml" id="r_subrequest">r.subrequest()</link>
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
462 или
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
463 <link doc="../njs/reference.xml" id="settimeout">setTimeout()</link>,
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
464 не поддерживаются.
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
465 </note>
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
466 </para>
42fb92e582db Added note to js_set about asyncronous calls.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2693
diff changeset
467
1843
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
468 </directive>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
469
2693
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
470
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
471 <directive name="js_var">
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
472 <syntax><value>$переменная</value> [<value>значение</value>]</syntax>
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
473 <default/>
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
474 <context>http</context>
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
475 <appeared-in>0.5.3</appeared-in>
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
476
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
477 <para>
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
478 Объявляет
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
479 <link doc="../njs/reference.xml" id="r_variables">перезаписываемую</link>
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
480 переменную.
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
481 В качестве значения можно использовать текст, переменные и их комбинации.
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
482 Переменная не перезаписывается после перенаправления,
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
483 в отличие от переменных, созданных при помощи
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
484 директивы <link doc="ngx_http_rewrite_module.xml" id="set"/>.
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
485 </para>
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
486
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
487 </directive>
3cbd6e440581 Documented the js_var directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2686
diff changeset
488
1843
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
489 </section>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
490
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
491
2187
ed905ab118c7 Updated HTTP njs module according to njs 0.2.2.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2175
diff changeset
492 <section id="arguments" name="Аргумент запроса">
2149
6df1a86a60b8 Added new njs HTTP properties and methods.
Roman Arutyunyan <arut@nginx.com>
parents: 2142
diff changeset
493
6df1a86a60b8 Added new njs HTTP properties and methods.
Roman Arutyunyan <arut@nginx.com>
parents: 2142
diff changeset
494 <para>
2187
ed905ab118c7 Updated HTTP njs module according to njs 0.2.2.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2175
diff changeset
495 Каждый HTTP-обработчик njs получает один аргумент,
2288
786e96c52c7a Corrected links and example in Russian http and stream js modules.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 2246
diff changeset
496 <link doc="../njs/reference.xml" id="http">объект</link> запроса.
1843
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
497 </para>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
498
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
499 </section>
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
500
3492eb9b8138 Translated http and stream js modules into Russian.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff changeset
501 </module>