<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `actix-cors/src/lib.rs`."><title>lib.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-fa3bb1812debf86c.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="actix_cors" data-themes="" data-resource-suffix="" data-rustdoc-version="1.74.0-nightly (e7c502d93 2023-09-27)" data-channel="nightly" data-search-js="search-8be46b629f5f14a8.js" data-settings-js="settings-74424d7eec62a23e.js" ><script src="../../static.files/storage-fec3eaa3851e447d.js"></script><script defer src="../../static.files/src-script-3280b574d94e47b4.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-c5bd66d33317d69f.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-5d8b3c7633ad77ba.css"></noscript><link rel="icon" href="https://actix.rs/favicon.ico"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../actix_cors/index.html"><img src="https://actix.rs/img/logo.png" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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</pre></div><pre class="rust"><code><span class="doccomment">//! Cross-Origin Resource Sharing (CORS) controls for Actix Web.
//!
//! This middleware can be applied to both applications and resources. Once built, a [`Cors`]
//! builder can be used as an argument for Actix Web's `App::wrap()`, `Scope::wrap()`, or
//! `Resource::wrap()` methods.
//!
//! This CORS middleware automatically handles `OPTIONS` preflight requests.
//!
//! # Crate Features
//! - `draft-private-network-access`: ⚠️ Unstable. Adds opt-in support for the [Private Network
//! Access] spec extensions. This feature is unstable since it will follow breaking changes in the
//! draft spec until it is finalized.
//!
//! # Example
//! ```no_run
//! use actix_cors::Cors;
//! use actix_web::{get, http, web, App, HttpRequest, HttpResponse, HttpServer};
//!
//! #[get("/index.html")]
//! async fn index(req: HttpRequest) -> &'static str {
//! "<p>Hello World!</p>"
//! }
//!
//! #[actix_web::main]
//! async fn main() -> std::io::Result<()> {
//! HttpServer::new(|| {
//! let cors = Cors::default()
//! .allowed_origin("https://www.rust-lang.org")
//! .allowed_origin_fn(|origin, _req_head| {
//! origin.as_bytes().ends_with(b".rust-lang.org")
//! })
//! .allowed_methods(vec!["GET", "POST"])
//! .allowed_headers(vec![http::header::AUTHORIZATION, http::header::ACCEPT])
//! .allowed_header(http::header::CONTENT_TYPE)
//! .max_age(3600);
//!
//! App::new()
//! .wrap(cors)
//! .service(index)
//! })
//! .bind(("127.0.0.1", 8080))?
//! .run()
//! .await;
//!
//! Ok(())
//! }
//! ```
//!
//! [Private Network Access]: https://wicg.github.io/private-network-access
</span><span class="attr">#![forbid(unsafe_code)]
#![deny(rust_2018_idioms, nonstandard_style)]
#![warn(future_incompatible, missing_docs, missing_debug_implementations)]
#![doc(html_logo_url = <span class="string">"https://actix.rs/img/logo.png"</span>)]
#![doc(html_favicon_url = <span class="string">"https://actix.rs/favicon.ico"</span>)]
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
</span><span class="kw">mod </span>all_or_some;
<span class="kw">mod </span>builder;
<span class="kw">mod </span>error;
<span class="kw">mod </span>inner;
<span class="kw">mod </span>middleware;
<span class="kw">use </span>all_or_some::AllOrSome;
<span class="kw">pub use </span>builder::Cors;
<span class="kw">pub use </span>error::CorsError;
<span class="kw">use </span>inner::{Inner, OriginFn};
<span class="kw">pub use </span>middleware::CorsMiddleware;
</code></pre></div></section></main></body></html>