| <!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/hyper-0.14.26/src/server/accept.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>accept.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="../../../hyper/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="../../../hyper/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="doccomment">//! The `Accept` trait and supporting types. |
| //! |
| //! This module contains: |
| //! |
| //! - The [`Accept`](Accept) trait used to asynchronously accept incoming |
| //! connections. |
| //! - Utilities like `poll_fn` to ease creating a custom `Accept`. |
| |
| </span><span class="attribute">#[cfg(feature = <span class="string">"stream"</span>)] |
| </span><span class="kw">use </span>futures_core::Stream; |
| <span class="attribute">#[cfg(feature = <span class="string">"stream"</span>)] |
| </span><span class="kw">use </span>pin_project_lite::pin_project; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::common::{ |
| task::{<span class="self">self</span>, Poll}, |
| Pin, |
| }; |
| |
| <span class="doccomment">/// Asynchronously accept incoming connections. |
| </span><span class="kw">pub trait </span>Accept { |
| <span class="doccomment">/// The connection type that can be accepted. |
| </span><span class="kw">type </span>Conn; |
| <span class="doccomment">/// The error type that can occur when accepting a connection. |
| </span><span class="kw">type </span>Error; |
| |
| <span class="doccomment">/// Poll to accept the next connection. |
| </span><span class="kw">fn </span>poll_accept( |
| <span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>, |
| ) -> Poll<<span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><<span class="self">Self</span>::Conn, <span class="self">Self</span>::Error>>>; |
| } |
| |
| <span class="doccomment">/// Create an `Accept` with a polling function. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use std::task::Poll; |
| /// use hyper::server::{accept, Server}; |
| /// |
| /// # let mock_conn = (); |
| /// // If we created some mocked connection... |
| /// let mut conn = Some(mock_conn); |
| /// |
| /// // And accept just the mocked conn once... |
| /// let once = accept::poll_fn(move |cx| { |
| /// Poll::Ready(conn.take().map(Ok::<_, ()>)) |
| /// }); |
| /// |
| /// let builder = Server::builder(once); |
| /// ``` |
| </span><span class="kw">pub fn </span>poll_fn<F, IO, E>(func: F) -> <span class="kw">impl </span>Accept<Conn = IO, Error = E> |
| <span class="kw">where |
| </span>F: FnMut(<span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>) -> Poll<<span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><IO, E>>>, |
| { |
| <span class="kw">struct </span>PollFn<F>(F); |
| |
| <span class="comment">// The closure `F` is never pinned |
| </span><span class="kw">impl</span><F> Unpin <span class="kw">for </span>PollFn<F> {} |
| |
| <span class="kw">impl</span><F, IO, E> Accept <span class="kw">for </span>PollFn<F> |
| <span class="kw">where |
| </span>F: FnMut(<span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>) -> Poll<<span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><IO, E>>>, |
| { |
| <span class="kw">type </span>Conn = IO; |
| <span class="kw">type </span>Error = E; |
| <span class="kw">fn </span>poll_accept( |
| <span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>, |
| ) -> Poll<<span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><<span class="self">Self</span>::Conn, <span class="self">Self</span>::Error>>> { |
| (<span class="self">self</span>.get_mut().<span class="number">0</span>)(cx) |
| } |
| } |
| |
| PollFn(func) |
| } |
| |
| <span class="doccomment">/// Adapt a `Stream` of incoming connections into an `Accept`. |
| /// |
| /// # Optional |
| /// |
| /// This function requires enabling the `stream` feature in your |
| /// `Cargo.toml`. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"stream"</span>)] |
| </span><span class="kw">pub fn </span>from_stream<S, IO, E>(stream: S) -> <span class="kw">impl </span>Accept<Conn = IO, Error = E> |
| <span class="kw">where |
| </span>S: Stream<Item = <span class="prelude-ty">Result</span><IO, E>>, |
| { |
| <span class="macro">pin_project! </span>{ |
| <span class="kw">struct </span>FromStream<S> { |
| <span class="attribute">#[pin] |
| </span>stream: S, |
| } |
| } |
| |
| <span class="kw">impl</span><S, IO, E> Accept <span class="kw">for </span>FromStream<S> |
| <span class="kw">where |
| </span>S: Stream<Item = <span class="prelude-ty">Result</span><IO, E>>, |
| { |
| <span class="kw">type </span>Conn = IO; |
| <span class="kw">type </span>Error = E; |
| <span class="kw">fn </span>poll_accept( |
| <span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>, |
| ) -> Poll<<span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><<span class="self">Self</span>::Conn, <span class="self">Self</span>::Error>>> { |
| <span class="self">self</span>.project().stream.poll_next(cx) |
| } |
| } |
| |
| FromStream { stream } |
| } |
| </code></pre></div> |
| </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> |
