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diff --git a/files/de/web/http/headers/user-agent/index.html b/files/de/web/http/headers/user-agent/index.html new file mode 100644 index 0000000000..ceb6e8e533 --- /dev/null +++ b/files/de/web/http/headers/user-agent/index.html @@ -0,0 +1,139 @@ +--- +title: User-Agent +slug: Web/HTTP/Headers/User-Agent +tags: + - HTTP + - NeedsTranslation + - Reference + - TopicStub + - header +translation_of: Web/HTTP/Headers/User-Agent +--- +<div>{{HTTPSidebar}}</div> + +<p>The <strong>User-Agent</strong> request header contains a characteristic string that allows the network protocol peers to identify the application type, operating system, software vendor or software version of the requesting software user agent.</p> + +<div class="note"> +<p>Please read <a href="/en-US/docs/Web/HTTP/Browser_detection_using_the_user_agent">Browser detection using the user agent</a> and why serving different Web pages or services to different browsers is usually a bad idea.</p> +</div> + +<table class="properties"> + <tbody> + <tr> + <th scope="row">Header type</th> + <td>{{Glossary("Request header")}}</td> + </tr> + <tr> + <th scope="row">{{Glossary("Forbidden header name")}}</th> + <td>no</td> + </tr> + </tbody> +</table> + +<h2 id="Syntax">Syntax</h2> + +<pre class="syntaxbox">User-Agent: <product> / <product-version> <comment> + +Common format for web browsers: + +User-Agent: Mozilla/<version> (<system-information>) <platform> (<platform-details>) <extensions> +</pre> + +<h2 id="Directives">Directives</h2> + +<dl> + <dt><product></dt> + <dd>A product identifier</dd> + <dt><product-version></dt> + <dd>A version number of the product.</dd> + <dt><comment></dt> + <dd>Zero or more comments containing sub product information, for example.</dd> +</dl> + +<h2 id="Firefox_UA_string">Firefox UA string</h2> + +<p>For more details on Firefox and Gecko based user agent strings, see the <a href="/en-US/docs/Web/HTTP/Headers/User-Agent/Firefox">Firefox user agent string reference</a>. The UA string of Firefox itself is broken down into four components:</p> + +<p><strong>Mozilla/5.0 (<em>platform</em>; rv:<em>geckoversion</em>) Gecko/<em>geckotrail</em> Firefox/<em>firefoxversion</em></strong></p> + +<ul> + <li><em><strong>Mozilla/5.0</strong></em> is the general token that says the browser is Mozilla compatible, and is common to almost every browser today.</li> + <li><strong><em>platform</em></strong> describes the native platform the browser is running on (e.g. Windows, Mac, Linux or Android), and whether or not it's a mobile phone. Firefox OS phones simply say "Mobile"; the web is the platform. Note that <strong><em>platform</em></strong> can consist of multiple "; "-separated tokens. See below for further details and examples.</li> + <li><strong>rv:<em>geckoversion</em></strong> indicates the release version of Gecko (such as <em>"17.0"</em>). In recent browsers, <strong><em>geckoversion</em></strong> is the same as <strong><em>firefoxversion</em></strong>.</li> + <li><strong><em>Gecko/geckotrail</em></strong> indicates that the browser is based on Gecko.</li> + <li>On Desktop, <em><strong>geckotrail</strong></em> is the fixed string "20100101"</li> + <li><em><strong>Firefox/firefoxversion</strong></em> indicates the browser is Firefox, and provides the version (such as "<em>17.0"</em>).</li> +</ul> + +<h3 id="Examples">Examples</h3> + +<pre>Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0 +Mozilla/5.0 (Macintosh; Intel Mac OS X <em>x.y</em>; rv:42.0) Gecko/20100101 Firefox/42.0 +</pre> + +<h2 id="Chrome_UA_string">Chrome UA string</h2> + +<p>The Chrome (or Chromium/blink-based engines) user agent string is similar to the Firefox format. For compatibility, it adds strings like "KHTML, like Gecko" and "Safari".</p> + +<h3 id="Examples_2">Examples</h3> + +<pre>Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36</pre> + +<h2 id="Opera_UA_string">Opera UA string</h2> + +<p>The Opera browser is also based on the blink engine, which is why it almost looks the same, but adds "OPR/<version>".</p> + +<h3 id="Examples_3">Examples</h3> + +<pre>Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36 OPR/38.0.2220.41</pre> + +<h2 id="Safari_UA_string">Safari UA string</h2> + +<p>In this example, the user agent string is mobile safari version. It contains the word "Mobile".</p> + +<h3 id="Examples_4">Examples</h3> + +<pre>Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1</pre> + +<h2 id="Internet_Explorer_UA_string">Internet Explorer UA string</h2> + +<h3 id="Examples_5">Examples</h3> + +<pre>Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0)</pre> + +<h2 id="Crawler_and_bot_UA_strings">Crawler and bot UA strings</h2> + +<h3 id="Examples_6">Examples</h3> + +<pre>Googlebot/2.1 (+http://www.google.com/bot.html)</pre> + +<h2 id="Specifications">Specifications</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Specification</th> + <th scope="col">Title</th> + </tr> + <tr> + <td>{{RFC("7231", "User-Agent", "5.5.3")}}</td> + <td>Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content</td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility">Browser compatibility</h2> + +<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p> + +<p>{{Compat("http.headers.User-Agent")}}</p> + +<h2 id="See_also">See also</h2> + +<ul> + <li><a href="https://hacks.mozilla.org/2013/09/user-agent-detection-history-and-checklist/">User-Agent detection, history and checklist</a></li> + <li><a href="/en-US/docs/Web/HTTP/Headers/User-Agent/Firefox">Firefox user agent string reference</a></li> + <li> + <p><a href="/en-US/docs/Web/HTTP/Browser_detection_using_the_user_agent">Browser detection using the user agent</a></p> + </li> +</ul> |