| <!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="Create a `MakeService` from a function."><meta name="keywords" content="rust, rustlang, rust-lang, make_service_fn"><title>make_service_fn in hyper::service - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../hyper/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../hyper/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><div class="sidebar-elems"><h2><a href="index.html">In hyper::service</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" 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="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Function <a href="../index.html">hyper</a>::<wbr><a href="index.html">service</a>::<wbr><a class="fn" href="#">make_service_fn</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../../src/hyper/service/make.rs.html#138-144">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="item-decl"><pre class="rust fn"><code>pub fn make_service_fn<F, Target, Ret>(f: F) -> MakeServiceFn<F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Target) -> Ret,<br> Ret: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</span></code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Create a <code>MakeService</code> from a function.</p> |
| <h2 id="example"><a href="#example">Example</a></h2> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>std::convert::Infallible; |
| <span class="kw">use </span>hyper::{Body, Request, Response, Server}; |
| <span class="kw">use </span>hyper::server::conn::AddrStream; |
| <span class="kw">use </span>hyper::service::{make_service_fn, service_fn}; |
| |
| <span class="kw">let </span>addr = ([<span class="number">127</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>], <span class="number">3000</span>).into(); |
| |
| <span class="kw">let </span>make_svc = make_service_fn(|socket: <span class="kw-2">&</span>AddrStream| { |
| <span class="kw">let </span>remote_addr = socket.remote_addr(); |
| <span class="kw">async move </span>{ |
| <span class="prelude-val">Ok</span>::<<span class="kw">_</span>, Infallible>(service_fn(<span class="kw">move </span>|<span class="kw">_</span>: Request<Body>| <span class="kw">async move </span>{ |
| <span class="prelude-val">Ok</span>::<<span class="kw">_</span>, Infallible>( |
| Response::new(Body::from(<span class="macro">format!</span>(<span class="string">"Hello, {}!"</span>, remote_addr))) |
| ) |
| })) |
| } |
| }); |
| |
| <span class="comment">// Then bind and serve... |
| </span><span class="kw">let </span>server = Server::bind(<span class="kw-2">&</span>addr) |
| .serve(make_svc); |
| |
| <span class="comment">// Finally, spawn `server` onto an Executor... |
| </span><span class="kw">if let </span><span class="prelude-val">Err</span>(e) = server.<span class="kw">await </span>{ |
| <span class="macro">eprintln!</span>(<span class="string">"server error: {}"</span>, e); |
| }</code></pre></div> |
| </div></details></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="hyper" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
