| <!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 `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-rustls-0.22.0/src/common/handshake.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>handshake.rs - source</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="../../../source-script.js"></script><script defer src="../../../source-files.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 source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../tokio_rustls/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../tokio_rustls/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><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="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::common::{Stream, TlsState}; |
| <span class="kw">use </span>rustls::Session; |
| <span class="kw">use </span>std::future::Future; |
| <span class="kw">use </span>std::pin::Pin; |
| <span class="kw">use </span>std::task::{Context, Poll}; |
| <span class="kw">use </span>std::{io, mem}; |
| <span class="kw">use </span>tokio::io::{AsyncRead, AsyncWrite}; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait </span>IoSession { |
| <span class="kw">type </span>Io; |
| <span class="kw">type </span>Session; |
| |
| <span class="kw">fn </span>skip_handshake(<span class="kw-2">&</span><span class="self">self</span>) -> bool; |
| <span class="kw">fn </span>get_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> (<span class="kw-2">&mut </span>TlsState, <span class="kw-2">&mut </span><span class="self">Self</span>::Io, <span class="kw-2">&mut </span><span class="self">Self</span>::Session); |
| <span class="kw">fn </span>into_io(<span class="self">self</span>) -> <span class="self">Self</span>::Io; |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum </span>MidHandshake<IS> { |
| Handshaking(IS), |
| End, |
| } |
| |
| <span class="kw">impl</span><IS> Future <span class="kw">for </span>MidHandshake<IS> |
| <span class="kw">where |
| </span>IS: IoSession + Unpin, |
| IS::Io: AsyncRead + AsyncWrite + Unpin, |
| IS::Session: Session + Unpin, |
| { |
| <span class="kw">type </span>Output = <span class="prelude-ty">Result</span><IS, (io::Error, IS::Io)>; |
| |
| <span class="kw">fn </span>poll(<span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, cx: <span class="kw-2">&mut </span>Context<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> { |
| <span class="kw">let </span>this = <span class="self">self</span>.get_mut(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>stream = |
| <span class="kw">if let </span>MidHandshake::Handshaking(stream) = mem::replace(this, MidHandshake::End) { |
| stream |
| } <span class="kw">else </span>{ |
| <span class="macro">panic!</span>(<span class="string">"unexpected polling after handshake"</span>) |
| }; |
| |
| <span class="kw">if </span>!stream.skip_handshake() { |
| <span class="kw">let </span>(state, io, session) = stream.get_mut(); |
| <span class="kw">let </span><span class="kw-2">mut </span>tls_stream = Stream::new(io, session).set_eof(!state.readable()); |
| |
| <span class="macro">macro_rules! </span>try_poll { |
| ( <span class="macro-nonterminal">$e</span>:expr ) => { |
| <span class="kw">match </span><span class="macro-nonterminal">$e </span>{ |
| Poll::Ready(<span class="prelude-val">Ok</span>(<span class="kw">_</span>)) => (), |
| Poll::Ready(<span class="prelude-val">Err</span>(err)) => <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>((err, stream.into_io()))), |
| Poll::Pending => { |
| <span class="kw-2">*</span>this = MidHandshake::Handshaking(stream); |
| <span class="kw">return </span>Poll::Pending; |
| } |
| } |
| }; |
| } |
| |
| <span class="kw">while </span>tls_stream.session.is_handshaking() { |
| <span class="macro">try_poll!</span>(tls_stream.handshake(cx)); |
| } |
| |
| <span class="kw">while </span>tls_stream.session.wants_write() { |
| <span class="macro">try_poll!</span>(tls_stream.write_io(cx)); |
| } |
| } |
| |
| Poll::Ready(<span class="prelude-val">Ok</span>(stream)) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="tokio_rustls" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
