<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="API documentation for the Rust `ALLOW` constant in crate `actix_web`."><metaname="keywords"content="rust, rustlang, rust-lang, ALLOW"><title>actix_web::http::header::ALLOW - Rust</title><linkrel="stylesheet"type="text/css"href="../../../normalize.css"><linkrel="stylesheet"type="text/css"href="../../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../../../dark.css"><linkrel="stylesheet"type="text/css"href="../../../light.css"id="themeStyle"><scriptsrc="../../../storage.js"></script></head><bodyclass="rustdoc constant"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="sidebar"><divclass="sidebar-menu">☰</div><divclass="sidebar-elems"><pclass='location'><ahref='../../index.html'>actix_web</a>::<wbr><ahref='../index.html'>http</a>::<wbr><ahref='index.html'>header</a></p><script>window.sidebarCurrent={name:'ALLOW',ty:'constant',relpath:''};</script><scriptdefersrc="sidebar-items.js"></script></div></nav><divclass="theme-picker"><buttonid="theme-picker"aria-label="Pick another theme!"><imgsrc="../../../brush.svg"width="18"alt="Pick another theme!"></button><divid="theme-choices"></div></div><scriptsrc="../../../theme.js"></script><navclass="sub"><formclass="search-form js-only"><divclass="search-container"><inputclass="search-input"name="search"autocomplete="off"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"><aid="settings-menu"href="../../../settings.html"><imgsrc="../../../wheel.svg"width="18"alt="Change settings"></a></div></form></nav><sectionid="main"class="content"><h1class='fqn'><spanclass='in-band'>Constant <ahref='../../index.html'>actix_web</a>::<wbr><ahref='../index.html'>http</a>::<wbr><ahref='index.html'>header</a>::<wbr><aclass="constant"href=''>ALLOW</a></span><spanclass='out-of-band'><spanid='render-detail'><aid="toggle-all-docs"href="javascript:void(0)"title="collapse all docs">[<spanclass='inner'>−</span>]</a></span><aclass='srclink'href='https://docs.rs/http/0.1.8/src/http/header/name.rs.html#84-86'title='goto source code'>[src]</a></span></h1><preclass='rust const'>pub const ALLOW: <aclass="struct"href="../../../actix_web/http/header/struct.HeaderName.html"title="struct actix_web::http::header::HeaderName">HeaderName</a><code> = </code><code>HeaderName{inner: Repr::Standard(StandardHeader::Allow),}</code></pre><divclass='docblock'><p>Lists the set of methods support by a resource.</p>
<p>This header must be sent if the server responds with a 405 Method Not
Allowed status code to indicate which request methods can be used. An
empty Allow header indicates that the resource allows no request
methods, which might occur temporarily for a given resource, for
example.</p>
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