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<!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="Creates a new configured HTTP/2 server with default configuration values backed by `io`."><title>handshake in h2::server - Rust</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/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-ac92e1bbe349e143.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="h2" data-themes="" data-resource-suffix="" data-rustdoc-version="1.76.0 (07dca489a 2024-02-04)" data-channel="1.76.0" data-search-js="search-2b6ce74ff89ae146.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-305769736d49e732.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-feafe1bb7466e4bd.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.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">&#9776;</button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../h2/index.html">h2</a><span class="version">0.3.21</span></h2></div><div class="sidebar-elems"><h2><a href="index.html">In h2::server</a></h2></div></nav><div class="sidebar-resizer"></div>
<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../../h2/all.html" title="show sidebar"></a></div><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" tabindex="-1"><a href="../../help.html" title="help">?</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="main-heading"><h1>Function <a href="../index.html">h2</a>::<wbr><a href="index.html">server</a>::<wbr><a class="fn" href="#">handshake</a><button id="copy-path" title="Copy item path to clipboard"><img src="../../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../../src/h2/server.rs.html#359-364">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><pre class="rust item-decl"><code>pub fn handshake&lt;T&gt;(io: T) -&gt; <a class="struct" href="struct.Handshake.html" title="struct h2::server::Handshake">Handshake</a>&lt;T, <a class="struct" href="../../bytes/bytes/struct.Bytes.html" title="struct bytes::bytes::Bytes">Bytes</a>&gt; <a href="#" class="tooltip" data-notable-ty="Handshake&lt;T, Bytes&gt;"></a><div class="where">where
T: <a class="trait" href="../../tokio/io/async_read/trait.AsyncRead.html" title="trait tokio::io::async_read::AsyncRead">AsyncRead</a> + <a class="trait" href="../../tokio/io/async_write/trait.AsyncWrite.html" title="trait tokio::io::async_write::AsyncWrite">AsyncWrite</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,</div></code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Creates a new configured HTTP/2 server with default configuration
values backed by <code>io</code>.</p>
<p>It is expected that <code>io</code> already be in an appropriate state to commence
the <a href="http://httpwg.org/specs/rfc7540.html#ConnectionHeader">HTTP/2 handshake</a>. See <a href="../index.html#handshake">Handshake</a> for more details.</p>
<p>Returns a future which resolves to the <a href="struct.Connection.html"><code>Connection</code></a> instance once the
HTTP/2 handshake has been completed. The returned <a href="struct.Connection.html"><code>Connection</code></a>
instance will be using default configuration values. Use <a href="struct.Builder.html" title="struct h2::server::Builder"><code>Builder</code></a> to
customize the configuration values used by a <a href="struct.Connection.html"><code>Connection</code></a> instance.</p>
<h2 id="examples"><a href="#examples">Examples</a></h2>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>connection = server::handshake(my_io).<span class="kw">await</span>.unwrap();
<span class="comment">// The HTTP/2 handshake has completed, now use `connection` to
// accept inbound HTTP/2 streams.</span></code></pre></div>
</div></details><script type="text/json" id="notable-traits-data">{"Handshake<T, Bytes>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.Handshake.html\" title=\"struct h2::server::Handshake\">Handshake</a>&lt;T, B&gt;</code></h3><pre><code><div class=\"where\">impl&lt;T, B&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.76.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.Handshake.html\" title=\"struct h2::server::Handshake\">Handshake</a>&lt;T, B&gt;<div class=\"where\">where\n T: <a class=\"trait\" href=\"../../tokio/io/async_read/trait.AsyncRead.html\" title=\"trait tokio::io::async_read::AsyncRead\">AsyncRead</a> + <a class=\"trait\" href=\"../../tokio/io/async_write/trait.AsyncWrite.html\" title=\"trait tokio::io::async_write::AsyncWrite\">AsyncWrite</a> + <a class=\"trait\" href=\"https://doc.rust-lang.org/1.76.0/core/marker/trait.Unpin.html\" title=\"trait core::marker::Unpin\">Unpin</a>,\n B: <a class=\"trait\" href=\"../../bytes/buf/buf_impl/trait.Buf.html\" title=\"trait bytes::buf::buf_impl::Buf\">Buf</a>,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.76.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = <a class=\"enum\" href=\"https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html\" title=\"enum core::result::Result\">Result</a>&lt;<a class=\"struct\" href=\"struct.Connection.html\" title=\"struct h2::server::Connection\">Connection</a>&lt;T, B&gt;, <a class=\"struct\" href=\"../struct.Error.html\" title=\"struct h2::Error\">Error</a>&gt;;</div>"}</script></section></div></main></body></html>