| <!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/proto/h2/server.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>server.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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| <span id="549">549</span> |
| <span id="550">550</span> |
| <span id="551">551</span> |
| <span id="552">552</span> |
| </pre><pre class="rust"><code><span class="kw">use </span>std::error::Error <span class="kw">as </span>StdError; |
| <span class="kw">use </span>std::marker::Unpin; |
| <span class="attribute">#[cfg(feature = <span class="string">"runtime"</span>)] |
| </span><span class="kw">use </span>std::time::Duration; |
| |
| <span class="kw">use </span>bytes::Bytes; |
| <span class="kw">use </span>h2::server::{Connection, Handshake, SendResponse}; |
| <span class="kw">use </span>h2::{Reason, RecvStream}; |
| <span class="kw">use </span>http::{Method, Request}; |
| <span class="kw">use </span>pin_project_lite::pin_project; |
| <span class="kw">use </span>tokio::io::{AsyncRead, AsyncWrite}; |
| <span class="kw">use </span>tracing::{debug, trace, warn}; |
| |
| <span class="kw">use super</span>::{ping, PipeToSendStream, SendBuf}; |
| <span class="kw">use </span><span class="kw">crate</span>::body::HttpBody; |
| <span class="kw">use </span><span class="kw">crate</span>::common::exec::ConnStreamExec; |
| <span class="kw">use </span><span class="kw">crate</span>::common::{date, task, Future, Pin, Poll}; |
| <span class="kw">use </span><span class="kw">crate</span>::ext::Protocol; |
| <span class="kw">use </span><span class="kw">crate</span>::headers; |
| <span class="kw">use </span><span class="kw">crate</span>::proto::h2::ping::Recorder; |
| <span class="kw">use </span><span class="kw">crate</span>::proto::h2::{H2Upgraded, UpgradedSendStream}; |
| <span class="kw">use </span><span class="kw">crate</span>::proto::Dispatched; |
| <span class="kw">use </span><span class="kw">crate</span>::service::HttpService; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::upgrade::{OnUpgrade, Pending, Upgraded}; |
| <span class="kw">use crate</span>::{Body, Response}; |
| |
| <span class="comment">// Our defaults are chosen for the "majority" case, which usually are not |
| // resource constrained, and so the spec default of 64kb can be too limiting |
| // for performance. |
| // |
| // At the same time, a server more often has multiple clients connected, and |
| // so is more likely to use more resources than a client would. |
| </span><span class="kw">const </span>DEFAULT_CONN_WINDOW: u32 = <span class="number">1024 </span>* <span class="number">1024</span>; <span class="comment">// 1mb |
| </span><span class="kw">const </span>DEFAULT_STREAM_WINDOW: u32 = <span class="number">1024 </span>* <span class="number">1024</span>; <span class="comment">// 1mb |
| </span><span class="kw">const </span>DEFAULT_MAX_FRAME_SIZE: u32 = <span class="number">1024 </span>* <span class="number">16</span>; <span class="comment">// 16kb |
| </span><span class="kw">const </span>DEFAULT_MAX_SEND_BUF_SIZE: usize = <span class="number">1024 </span>* <span class="number">400</span>; <span class="comment">// 400kb |
| // 16 MB "sane default" taken from golang http2 |
| </span><span class="kw">const </span>DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE: u32 = <span class="number">16 </span><< <span class="number">20</span>; |
| |
| <span class="attribute">#[derive(Clone, Debug)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Config { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) adaptive_window: bool, |
| <span class="kw">pub</span>(<span class="kw">crate</span>) initial_conn_window_size: u32, |
| <span class="kw">pub</span>(<span class="kw">crate</span>) initial_stream_window_size: u32, |
| <span class="kw">pub</span>(<span class="kw">crate</span>) max_frame_size: u32, |
| <span class="kw">pub</span>(<span class="kw">crate</span>) enable_connect_protocol: bool, |
| <span class="kw">pub</span>(<span class="kw">crate</span>) max_concurrent_streams: <span class="prelude-ty">Option</span><u32>, |
| <span class="kw">pub</span>(<span class="kw">crate</span>) max_pending_accept_reset_streams: <span class="prelude-ty">Option</span><usize>, |
| <span class="attribute">#[cfg(feature = <span class="string">"runtime"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) keep_alive_interval: <span class="prelude-ty">Option</span><Duration>, |
| <span class="attribute">#[cfg(feature = <span class="string">"runtime"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) keep_alive_timeout: Duration, |
| <span class="kw">pub</span>(<span class="kw">crate</span>) max_send_buffer_size: usize, |
| <span class="kw">pub</span>(<span class="kw">crate</span>) max_header_list_size: u32, |
| } |
| |
| <span class="kw">impl </span>Default <span class="kw">for </span>Config { |
| <span class="kw">fn </span>default() -> Config { |
| Config { |
| adaptive_window: <span class="bool-val">false</span>, |
| initial_conn_window_size: DEFAULT_CONN_WINDOW, |
| initial_stream_window_size: DEFAULT_STREAM_WINDOW, |
| max_frame_size: DEFAULT_MAX_FRAME_SIZE, |
| enable_connect_protocol: <span class="bool-val">false</span>, |
| max_concurrent_streams: <span class="prelude-val">None</span>, |
| max_pending_accept_reset_streams: <span class="prelude-val">None</span>, |
| <span class="attribute">#[cfg(feature = <span class="string">"runtime"</span>)] |
| </span>keep_alive_interval: <span class="prelude-val">None</span>, |
| <span class="attribute">#[cfg(feature = <span class="string">"runtime"</span>)] |
| </span>keep_alive_timeout: Duration::from_secs(<span class="number">20</span>), |
| max_send_buffer_size: DEFAULT_MAX_SEND_BUF_SIZE, |
| max_header_list_size: DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE, |
| } |
| } |
| } |
| |
| <span class="macro">pin_project! </span>{ |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Server<T, S, B, E> |
| <span class="kw">where |
| </span>S: HttpService<Body>, |
| B: HttpBody, |
| { |
| exec: E, |
| service: S, |
| state: State<T, B>, |
| } |
| } |
| |
| <span class="kw">enum </span>State<T, B> |
| <span class="kw">where |
| </span>B: HttpBody, |
| { |
| Handshaking { |
| ping_config: ping::Config, |
| hs: Handshake<T, SendBuf<B::Data>>, |
| }, |
| Serving(Serving<T, B>), |
| Closed, |
| } |
| |
| <span class="kw">struct </span>Serving<T, B> |
| <span class="kw">where |
| </span>B: HttpBody, |
| { |
| ping: <span class="prelude-ty">Option</span><(ping::Recorder, ping::Ponger)>, |
| conn: Connection<T, SendBuf<B::Data>>, |
| closing: <span class="prelude-ty">Option</span><<span class="kw">crate</span>::Error>, |
| } |
| |
| <span class="kw">impl</span><T, S, B, E> Server<T, S, B, E> |
| <span class="kw">where |
| </span>T: AsyncRead + AsyncWrite + Unpin, |
| S: HttpService<Body, ResBody = B>, |
| S::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| B: HttpBody + <span class="lifetime">'static</span>, |
| E: ConnStreamExec<S::Future, B>, |
| { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new(io: T, service: S, config: <span class="kw-2">&</span>Config, exec: E) -> Server<T, S, B, E> { |
| <span class="kw">let </span><span class="kw-2">mut </span>builder = h2::server::Builder::default(); |
| builder |
| .initial_window_size(config.initial_stream_window_size) |
| .initial_connection_window_size(config.initial_conn_window_size) |
| .max_frame_size(config.max_frame_size) |
| .max_header_list_size(config.max_header_list_size) |
| .max_send_buffer_size(config.max_send_buffer_size); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(max) = config.max_concurrent_streams { |
| builder.max_concurrent_streams(max); |
| } |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(max) = config.max_pending_accept_reset_streams { |
| builder.max_pending_accept_reset_streams(max); |
| } |
| <span class="kw">if </span>config.enable_connect_protocol { |
| builder.enable_connect_protocol(); |
| } |
| <span class="kw">let </span>handshake = builder.handshake(io); |
| |
| <span class="kw">let </span>bdp = <span class="kw">if </span>config.adaptive_window { |
| <span class="prelude-val">Some</span>(config.initial_stream_window_size) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| |
| <span class="kw">let </span>ping_config = ping::Config { |
| bdp_initial_window: bdp, |
| <span class="attribute">#[cfg(feature = <span class="string">"runtime"</span>)] |
| </span>keep_alive_interval: config.keep_alive_interval, |
| <span class="attribute">#[cfg(feature = <span class="string">"runtime"</span>)] |
| </span>keep_alive_timeout: config.keep_alive_timeout, |
| <span class="comment">// If keep-alive is enabled for servers, always enabled while |
| // idle, so it can more aggressively close dead connections. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"runtime"</span>)] |
| </span>keep_alive_while_idle: <span class="bool-val">true</span>, |
| }; |
| |
| Server { |
| exec, |
| state: State::Handshaking { |
| ping_config, |
| hs: handshake, |
| }, |
| service, |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>graceful_shutdown(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="macro">trace!</span>(<span class="string">"graceful_shutdown"</span>); |
| <span class="kw">match </span><span class="self">self</span>.state { |
| State::Handshaking { .. } => { |
| <span class="comment">// fall-through, to replace state with Closed |
| </span>} |
| State::Serving(<span class="kw-2">ref mut </span>srv) => { |
| <span class="kw">if </span>srv.closing.is_none() { |
| srv.conn.graceful_shutdown(); |
| } |
| <span class="kw">return</span>; |
| } |
| State::Closed => { |
| <span class="kw">return</span>; |
| } |
| } |
| <span class="self">self</span>.state = State::Closed; |
| } |
| } |
| |
| <span class="kw">impl</span><T, S, B, E> Future <span class="kw">for </span>Server<T, S, B, E> |
| <span class="kw">where |
| </span>T: AsyncRead + AsyncWrite + Unpin, |
| S: HttpService<Body, ResBody = B>, |
| S::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| B: HttpBody + <span class="lifetime">'static</span>, |
| E: ConnStreamExec<S::Future, B>, |
| { |
| <span class="kw">type </span>Output = <span class="kw">crate</span>::Result<Dispatched>; |
| |
| <span class="kw">fn </span>poll(<span class="kw-2">mut </span><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="self">Self</span>::Output> { |
| <span class="kw">let </span>me = <span class="kw-2">&mut *</span><span class="self">self</span>; |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>next = <span class="kw">match </span>me.state { |
| State::Handshaking { |
| <span class="kw-2">ref mut </span>hs, |
| <span class="kw-2">ref </span>ping_config, |
| } => { |
| <span class="kw">let </span><span class="kw-2">mut </span>conn = <span class="macro">ready!</span>(Pin::new(hs).poll(cx).map_err(<span class="kw">crate</span>::Error::new_h2))<span class="question-mark">?</span>; |
| <span class="kw">let </span>ping = <span class="kw">if </span>ping_config.is_enabled() { |
| <span class="kw">let </span>pp = conn.ping_pong().expect(<span class="string">"conn.ping_pong"</span>); |
| <span class="prelude-val">Some</span>(ping::channel(pp, ping_config.clone())) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| State::Serving(Serving { |
| ping, |
| conn, |
| closing: <span class="prelude-val">None</span>, |
| }) |
| } |
| State::Serving(<span class="kw-2">ref mut </span>srv) => { |
| <span class="macro">ready!</span>(srv.poll_server(cx, <span class="kw-2">&mut </span>me.service, <span class="kw-2">&mut </span>me.exec))<span class="question-mark">?</span>; |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(Dispatched::Shutdown)); |
| } |
| State::Closed => { |
| <span class="comment">// graceful_shutdown was called before handshaking finished, |
| // nothing to do here... |
| </span><span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(Dispatched::Shutdown)); |
| } |
| }; |
| me.state = next; |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><T, B> Serving<T, B> |
| <span class="kw">where |
| </span>T: AsyncRead + AsyncWrite + Unpin, |
| B: HttpBody + <span class="lifetime">'static</span>, |
| { |
| <span class="kw">fn </span>poll_server<S, E>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>, |
| service: <span class="kw-2">&mut </span>S, |
| exec: <span class="kw-2">&mut </span>E, |
| ) -> Poll<<span class="kw">crate</span>::Result<()>> |
| <span class="kw">where |
| </span>S: HttpService<Body, ResBody = B>, |
| S::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| E: ConnStreamExec<S::Future, B>, |
| { |
| <span class="kw">if </span><span class="self">self</span>.closing.is_none() { |
| <span class="kw">loop </span>{ |
| <span class="self">self</span>.poll_ping(cx); |
| |
| <span class="comment">// Check that the service is ready to accept a new request. |
| // |
| // - If not, just drive the connection some. |
| // - If ready, try to accept a new request from the connection. |
| </span><span class="kw">match </span>service.poll_ready(cx) { |
| Poll::Ready(<span class="prelude-val">Ok</span>(())) => (), |
| Poll::Pending => { |
| <span class="comment">// use `poll_closed` instead of `poll_accept`, |
| // in order to avoid accepting a request. |
| </span><span class="macro">ready!</span>(<span class="self">self</span>.conn.poll_closed(cx).map_err(<span class="kw">crate</span>::Error::new_h2))<span class="question-mark">?</span>; |
| <span class="macro">trace!</span>(<span class="string">"incoming connection complete"</span>); |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(())); |
| } |
| Poll::Ready(<span class="prelude-val">Err</span>(err)) => { |
| <span class="kw">let </span>err = <span class="kw">crate</span>::Error::new_user_service(err); |
| <span class="macro">debug!</span>(<span class="string">"service closed: {}"</span>, err); |
| |
| <span class="kw">let </span>reason = err.h2_reason(); |
| <span class="kw">if </span>reason == Reason::NO_ERROR { |
| <span class="comment">// NO_ERROR is only used for graceful shutdowns... |
| </span><span class="macro">trace!</span>(<span class="string">"interpreting NO_ERROR user error as graceful_shutdown"</span>); |
| <span class="self">self</span>.conn.graceful_shutdown(); |
| } <span class="kw">else </span>{ |
| <span class="macro">trace!</span>(<span class="string">"abruptly shutting down with {:?}"</span>, reason); |
| <span class="self">self</span>.conn.abrupt_shutdown(reason); |
| } |
| <span class="self">self</span>.closing = <span class="prelude-val">Some</span>(err); |
| <span class="kw">break</span>; |
| } |
| } |
| |
| <span class="comment">// When the service is ready, accepts an incoming request. |
| </span><span class="kw">match </span><span class="macro">ready!</span>(<span class="self">self</span>.conn.poll_accept(cx)) { |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>((req, <span class="kw-2">mut </span>respond))) => { |
| <span class="macro">trace!</span>(<span class="string">"incoming request"</span>); |
| <span class="kw">let </span>content_length = headers::content_length_parse_all(req.headers()); |
| <span class="kw">let </span>ping = <span class="self">self |
| </span>.ping |
| .as_ref() |
| .map(|ping| ping.<span class="number">0</span>.clone()) |
| .unwrap_or_else(ping::disabled); |
| |
| <span class="comment">// Record the headers received |
| </span>ping.record_non_data(); |
| |
| <span class="kw">let </span>is_connect = req.method() == Method::CONNECT; |
| <span class="kw">let </span>(<span class="kw-2">mut </span>parts, stream) = req.into_parts(); |
| <span class="kw">let </span>(<span class="kw-2">mut </span>req, connect_parts) = <span class="kw">if </span>!is_connect { |
| ( |
| Request::from_parts( |
| parts, |
| <span class="kw">crate</span>::Body::h2(stream, content_length.into(), ping), |
| ), |
| <span class="prelude-val">None</span>, |
| ) |
| } <span class="kw">else </span>{ |
| <span class="kw">if </span>content_length.map_or(<span class="bool-val">false</span>, |len| len != <span class="number">0</span>) { |
| <span class="macro">warn!</span>(<span class="string">"h2 connect request with non-zero body not supported"</span>); |
| respond.send_reset(h2::Reason::INTERNAL_ERROR); |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(())); |
| } |
| <span class="kw">let </span>(pending, upgrade) = <span class="kw">crate</span>::upgrade::pending(); |
| <span class="macro">debug_assert!</span>(parts.extensions.get::<OnUpgrade>().is_none()); |
| parts.extensions.insert(upgrade); |
| ( |
| Request::from_parts(parts, <span class="kw">crate</span>::Body::empty()), |
| <span class="prelude-val">Some</span>(ConnectParts { |
| pending, |
| ping, |
| recv_stream: stream, |
| }), |
| ) |
| }; |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(protocol) = req.extensions_mut().remove::<h2::ext::Protocol>() { |
| req.extensions_mut().insert(Protocol::from_inner(protocol)); |
| } |
| |
| <span class="kw">let </span>fut = H2Stream::new(service.call(req), connect_parts, respond); |
| exec.execute_h2stream(fut); |
| } |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(e)) => { |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::Error::new_h2(e))); |
| } |
| <span class="prelude-val">None </span>=> { |
| <span class="comment">// no more incoming streams... |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>((<span class="kw-2">ref </span>ping, <span class="kw">_</span>)) = <span class="self">self</span>.ping { |
| ping.ensure_not_timed_out()<span class="question-mark">?</span>; |
| } |
| |
| <span class="macro">trace!</span>(<span class="string">"incoming connection complete"</span>); |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(())); |
| } |
| } |
| } |
| } |
| |
| <span class="macro">debug_assert!</span>( |
| <span class="self">self</span>.closing.is_some(), |
| <span class="string">"poll_server broke loop without closing" |
| </span>); |
| |
| <span class="macro">ready!</span>(<span class="self">self</span>.conn.poll_closed(cx).map_err(<span class="kw">crate</span>::Error::new_h2))<span class="question-mark">?</span>; |
| |
| Poll::Ready(<span class="prelude-val">Err</span>(<span class="self">self</span>.closing.take().expect(<span class="string">"polled after error"</span>))) |
| } |
| |
| <span class="kw">fn </span>poll_ping(<span class="kw-2">&mut </span><span class="self">self</span>, cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>) { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>((<span class="kw">_</span>, <span class="kw-2">ref mut </span>estimator)) = <span class="self">self</span>.ping { |
| <span class="kw">match </span>estimator.poll(cx) { |
| Poll::Ready(ping::Ponged::SizeUpdate(wnd)) => { |
| <span class="self">self</span>.conn.set_target_window_size(wnd); |
| <span class="kw">let _ </span>= <span class="self">self</span>.conn.set_initial_window_size(wnd); |
| } |
| <span class="attribute">#[cfg(feature = <span class="string">"runtime"</span>)] |
| </span>Poll::Ready(ping::Ponged::KeepAliveTimedOut) => { |
| <span class="macro">debug!</span>(<span class="string">"keep-alive timed out, closing connection"</span>); |
| <span class="self">self</span>.conn.abrupt_shutdown(h2::Reason::NO_ERROR); |
| } |
| Poll::Pending => {} |
| } |
| } |
| } |
| } |
| |
| <span class="macro">pin_project! </span>{ |
| <span class="attribute">#[allow(missing_debug_implementations)] |
| </span><span class="kw">pub struct </span>H2Stream<F, B> |
| <span class="kw">where |
| </span>B: HttpBody, |
| { |
| reply: SendResponse<SendBuf<B::Data>>, |
| <span class="attribute">#[pin] |
| </span>state: H2StreamState<F, B>, |
| } |
| } |
| |
| <span class="macro">pin_project! </span>{ |
| <span class="attribute">#[project = H2StreamStateProj] |
| </span><span class="kw">enum </span>H2StreamState<F, B> |
| <span class="kw">where |
| </span>B: HttpBody, |
| { |
| Service { |
| <span class="attribute">#[pin] |
| </span>fut: F, |
| connect_parts: <span class="prelude-ty">Option</span><ConnectParts>, |
| }, |
| Body { |
| <span class="attribute">#[pin] |
| </span>pipe: PipeToSendStream<B>, |
| }, |
| } |
| } |
| |
| <span class="kw">struct </span>ConnectParts { |
| pending: Pending, |
| ping: Recorder, |
| recv_stream: RecvStream, |
| } |
| |
| <span class="kw">impl</span><F, B> H2Stream<F, B> |
| <span class="kw">where |
| </span>B: HttpBody, |
| { |
| <span class="kw">fn </span>new( |
| fut: F, |
| connect_parts: <span class="prelude-ty">Option</span><ConnectParts>, |
| respond: SendResponse<SendBuf<B::Data>>, |
| ) -> H2Stream<F, B> { |
| H2Stream { |
| reply: respond, |
| state: H2StreamState::Service { fut, connect_parts }, |
| } |
| } |
| } |
| |
| <span class="macro">macro_rules! </span>reply { |
| (<span class="macro-nonterminal">$me</span>:expr, <span class="macro-nonterminal">$res</span>:expr, <span class="macro-nonterminal">$eos</span>:expr) => {{ |
| <span class="kw">match </span><span class="macro-nonterminal">$me</span>.reply.send_response(<span class="macro-nonterminal">$res</span>, <span class="macro-nonterminal">$eos</span>) { |
| <span class="prelude-val">Ok</span>(tx) => tx, |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">debug!</span>(<span class="string">"send response error: {}"</span>, e); |
| <span class="macro-nonterminal">$me</span>.reply.send_reset(Reason::INTERNAL_ERROR); |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::Error::new_h2(e))); |
| } |
| } |
| }}; |
| } |
| |
| <span class="kw">impl</span><F, B, E> H2Stream<F, B> |
| <span class="kw">where |
| </span>F: Future<Output = <span class="prelude-ty">Result</span><Response<B>, E>>, |
| B: HttpBody, |
| B::Data: <span class="lifetime">'static</span>, |
| B::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| E: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| { |
| <span class="kw">fn </span>poll2(<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="kw">crate</span>::Result<()>> { |
| <span class="kw">let </span><span class="kw-2">mut </span>me = <span class="self">self</span>.project(); |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>next = <span class="kw">match </span>me.state.as_mut().project() { |
| H2StreamStateProj::Service { |
| fut: h, |
| connect_parts, |
| } => { |
| <span class="kw">let </span>res = <span class="kw">match </span>h.poll(cx) { |
| Poll::Ready(<span class="prelude-val">Ok</span>(r)) => r, |
| Poll::Pending => { |
| <span class="comment">// Response is not yet ready, so we want to check if the client has sent a |
| // RST_STREAM frame which would cancel the current request. |
| </span><span class="kw">if let </span>Poll::Ready(reason) = |
| me.reply.poll_reset(cx).map_err(<span class="kw">crate</span>::Error::new_h2)<span class="question-mark">? |
| </span>{ |
| <span class="macro">debug!</span>(<span class="string">"stream received RST_STREAM: {:?}"</span>, reason); |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::Error::new_h2(reason.into()))); |
| } |
| <span class="kw">return </span>Poll::Pending; |
| } |
| Poll::Ready(<span class="prelude-val">Err</span>(e)) => { |
| <span class="kw">let </span>err = <span class="kw">crate</span>::Error::new_user_service(e); |
| <span class="macro">warn!</span>(<span class="string">"http2 service errored: {}"</span>, err); |
| me.reply.send_reset(err.h2_reason()); |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(err)); |
| } |
| }; |
| |
| <span class="kw">let </span>(head, body) = res.into_parts(); |
| <span class="kw">let </span><span class="kw-2">mut </span>res = ::http::Response::from_parts(head, ()); |
| <span class="kw">super</span>::strip_connection_headers(res.headers_mut(), <span class="bool-val">false</span>); |
| |
| <span class="comment">// set Date header if it isn't already set... |
| </span>res.headers_mut() |
| .entry(::http::header::DATE) |
| .or_insert_with(date::update_and_header_value); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(connect_parts) = connect_parts.take() { |
| <span class="kw">if </span>res.status().is_success() { |
| <span class="kw">if </span>headers::content_length_parse_all(res.headers()) |
| .map_or(<span class="bool-val">false</span>, |len| len != <span class="number">0</span>) |
| { |
| <span class="macro">warn!</span>(<span class="string">"h2 successful response to CONNECT request with body not supported"</span>); |
| me.reply.send_reset(h2::Reason::INTERNAL_ERROR); |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::Error::new_user_header())); |
| } |
| <span class="kw">let </span>send_stream = <span class="macro">reply!</span>(me, res, <span class="bool-val">false</span>); |
| connect_parts.pending.fulfill(Upgraded::new( |
| H2Upgraded { |
| ping: connect_parts.ping, |
| recv_stream: connect_parts.recv_stream, |
| send_stream: <span class="kw">unsafe </span>{ UpgradedSendStream::new(send_stream) }, |
| buf: Bytes::new(), |
| }, |
| Bytes::new(), |
| )); |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(())); |
| } |
| } |
| |
| <span class="kw">if </span>!body.is_end_stream() { |
| <span class="comment">// automatically set Content-Length from body... |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>(len) = body.size_hint().exact() { |
| headers::set_content_length_if_missing(res.headers_mut(), len); |
| } |
| |
| <span class="kw">let </span>body_tx = <span class="macro">reply!</span>(me, res, <span class="bool-val">false</span>); |
| H2StreamState::Body { |
| pipe: PipeToSendStream::new(body, body_tx), |
| } |
| } <span class="kw">else </span>{ |
| <span class="macro">reply!</span>(me, res, <span class="bool-val">true</span>); |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(())); |
| } |
| } |
| H2StreamStateProj::Body { pipe } => { |
| <span class="kw">return </span>pipe.poll(cx); |
| } |
| }; |
| me.state.set(next); |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><F, B, E> Future <span class="kw">for </span>H2Stream<F, B> |
| <span class="kw">where |
| </span>F: Future<Output = <span class="prelude-ty">Result</span><Response<B>, E>>, |
| B: HttpBody, |
| B::Data: <span class="lifetime">'static</span>, |
| B::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| E: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| { |
| <span class="kw">type </span>Output = (); |
| |
| <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>task::Context<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> { |
| <span class="self">self</span>.poll2(cx).map(|res| { |
| <span class="kw">if let </span><span class="prelude-val">Err</span>(e) = res { |
| <span class="macro">debug!</span>(<span class="string">"stream error: {}"</span>, e); |
| } |
| }) |
| } |
| } |
| </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> |