<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="description" content=""> <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara"> <title>Nine Nines: cowboy_req:host_info(3)</title> <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic' rel='stylesheet' type='text/css'> <link href="/css/99s.css?r=5" rel="stylesheet"> <link rel="shortcut icon" href="/img/ico/favicon.ico"> <link rel="apple-touch-icon-precomposed" sizes="114x114" href="/img/ico/apple-touch-icon-114.png"> <link rel="apple-touch-icon-precomposed" sizes="72x72" href="/img/ico/apple-touch-icon-72.png"> <link rel="apple-touch-icon-precomposed" href="/img/ico/apple-touch-icon-57.png"> </head> <body class=""> <header id="page-head"> <div id="topbar" class="container"> <div class="row"> <div class="span2"> <h1 id="logo"><a href="/" title="99s">99s</a></h1> </div> <div class="span10"> <div id="side-header"> <nav> <ul> <li><a title="Hear my thoughts" href="/articles">Articles</a></li> <li><a title="Watch my talks" href="/talks">Talks</a></li> <li class="active"><a title="Read the docs" href="/docs">Documentation</a></li> <li><a title="Request my services" href="/services">Consulting & Training</a></li> </ul> </nav> <ul id="social"> <li> <a href="https://github.com/ninenines" title="Check my Github repositories"><img src="/img/ico_github.png" data-hover="/img/ico_github_alt.png" alt="Github"></a> </li> <li> <a title="Contact me" href="mailto:contact@ninenines.eu"><img src="/img/ico_mail.png" data-hover="/img/ico_mail_alt.png"></a> </li> </ul> </div> </div> </div> </div> </header> <div id="contents" class="two_col"> <div class="container"> <div class="row"> <div id="docs" class="span9 maincol"> <h1 class="lined-header"><span>cowboy_req:host_info(3)</span></h1> <h2 id="_name">Name</h2> <p>cowboy_req:host_info - Access the route's heading host segments</p> <h2 id="_description">Description</h2> <div class="listingblock"><div class="content"><!-- Generator: GNU source-highlight 3.1.8 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> <pre><tt><b><font color="#000000">host_info</font></b>(<font color="#009900">Req</font> <font color="#990000">::</font> <b><font color="#000000">cowboy_req:req</font></b>()) <font color="#990000">-></font> <b><font color="#000000">cowboy_router:tokens</font></b>()</tt></pre> </div></div> <p>Return the tokens for the heading host segments.</p> <p>This is the part of the host name that was matched using the <code>...</code> notation.</p> <h2 id="_arguments">Arguments</h2> <dl><dt>Req</dt> <dd><p>The Req object.</p> </dd> </dl> <h2 id="_return_value">Return value</h2> <p>The tokens are returned as a list of case insensitive binary strings.</p> <h2 id="_changelog">Changelog</h2> <ul><li><strong>2.0</strong>: Only the tokens are returned, they are no longer wrapped in a tuple. </li> <li><strong>1.0</strong>: Function introduced. </li> </ul> <h2 id="_examples">Examples</h2> <div class="listingblock"><div class="title">Get the host_info tokens</div> <div class="content"><!-- Generator: GNU source-highlight 3.1.8 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> <pre><tt><font color="#009900">HostInfo</font> <font color="#990000">=</font> <b><font color="#000000">cowboy_req:host_info</font></b>(<font color="#009900">Req</font>)<font color="#990000">.</font></tt></pre> </div></div> <h2 id="_see_also">See also</h2> <p><a href="../cowboy_req">cowboy_req(3)</a>, <a href="../cowboy_req.binding">cowboy_req:binding(3)</a>, <a href="../cowboy_req.bindings">cowboy_req:bindings(3)</a>, <a href="../cowboy_req.path_info">cowboy_req:path_info(3)</a>, <a href="../cowboy_router">cowboy_router(3)</a></p> </div> <div class="span3 sidecol"> <h3> Cowboy 2.6 Function Reference </h3> <ul> <li><a href="/docs/en/cowboy/2.6/guide">User Guide</a></li> <li><a href="/docs/en/cowboy/2.6/manual">Function Reference</a></li> </ul> <h4 id="docs-nav">Navigation</h4> <h4>Version select</h4> <ul> <li><a href="/docs/en/cowboy/2.6/manual">2.6</a></li> <li><a href="/docs/en/cowboy/2.5/manual">2.5</a></li> <li><a href="/docs/en/cowboy/2.4/manual">2.4</a></li> <li><a href="/docs/en/cowboy/2.3/manual">2.3</a></li> <li><a href="/docs/en/cowboy/2.2/manual">2.2</a></li> </ul> <h3 id="_like_my_work__donate">Like my work? 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