| <!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/h2-0.3.19/src/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="../../h2/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="../../h2/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="1612">1612</span> |
| <span id="1613">1613</span> |
| </pre><pre class="rust"><code><span class="doccomment">//! Server implementation of the HTTP/2 protocol. |
| //! |
| //! # Getting started |
| //! |
| //! Running an HTTP/2 server requires the caller to manage accepting the |
| //! connections as well as getting the connections to a state that is ready to |
| //! begin the HTTP/2 handshake. See [here](../index.html#handshake) for more |
| //! details. |
| //! |
| //! This could be as basic as using Tokio's [`TcpListener`] to accept |
| //! connections, but usually it means using either ALPN or HTTP/1.1 protocol |
| //! upgrades. |
| //! |
| //! Once a connection is obtained, it is passed to [`handshake`], |
| //! which will begin the [HTTP/2 handshake]. This returns a future that |
| //! completes once the handshake process is performed and HTTP/2 streams may |
| //! be received. |
| //! |
| //! [`handshake`] uses default configuration values. There are a number of |
| //! settings that can be changed by using [`Builder`] instead. |
| //! |
| //! # Inbound streams |
| //! |
| //! The [`Connection`] instance is used to accept inbound HTTP/2 streams. It |
| //! does this by implementing [`futures::Stream`]. When a new stream is |
| //! received, a call to [`Connection::accept`] will return `(request, response)`. |
| //! The `request` handle (of type [`http::Request<RecvStream>`]) contains the |
| //! HTTP request head as well as provides a way to receive the inbound data |
| //! stream and the trailers. The `response` handle (of type [`SendResponse`]) |
| //! allows responding to the request, stream the response payload, send |
| //! trailers, and send push promises. |
| //! |
| //! The send ([`SendStream`]) and receive ([`RecvStream`]) halves of the stream |
| //! can be operated independently. |
| //! |
| //! # Managing the connection |
| //! |
| //! The [`Connection`] instance is used to manage connection state. The caller |
| //! is required to call either [`Connection::accept`] or |
| //! [`Connection::poll_close`] in order to advance the connection state. Simply |
| //! operating on [`SendStream`] or [`RecvStream`] will have no effect unless the |
| //! connection state is advanced. |
| //! |
| //! It is not required to call **both** [`Connection::accept`] and |
| //! [`Connection::poll_close`]. If the caller is ready to accept a new stream, |
| //! then only [`Connection::accept`] should be called. When the caller **does |
| //! not** want to accept a new stream, [`Connection::poll_close`] should be |
| //! called. |
| //! |
| //! The [`Connection`] instance should only be dropped once |
| //! [`Connection::poll_close`] returns `Ready`. Once [`Connection::accept`] |
| //! returns `Ready(None)`, there will no longer be any more inbound streams. At |
| //! this point, only [`Connection::poll_close`] should be called. |
| //! |
| //! # Shutting down the server |
| //! |
| //! Graceful shutdown of the server is [not yet |
| //! implemented](https://github.com/hyperium/h2/issues/69). |
| //! |
| //! # Example |
| //! |
| //! A basic HTTP/2 server example that runs over TCP and assumes [prior |
| //! knowledge], i.e. both the client and the server assume that the TCP socket |
| //! will use the HTTP/2 protocol without prior negotiation. |
| //! |
| //! ```no_run |
| //! use h2::server; |
| //! use http::{Response, StatusCode}; |
| //! use tokio::net::TcpListener; |
| //! |
| //! #[tokio::main] |
| //! pub async fn main() { |
| //! let mut listener = TcpListener::bind("127.0.0.1:5928").await.unwrap(); |
| //! |
| //! // Accept all incoming TCP connections. |
| //! loop { |
| //! if let Ok((socket, _peer_addr)) = listener.accept().await { |
| //! // Spawn a new task to process each connection. |
| //! tokio::spawn(async { |
| //! // Start the HTTP/2 connection handshake |
| //! let mut h2 = server::handshake(socket).await.unwrap(); |
| //! // Accept all inbound HTTP/2 streams sent over the |
| //! // connection. |
| //! while let Some(request) = h2.accept().await { |
| //! let (request, mut respond) = request.unwrap(); |
| //! println!("Received request: {:?}", request); |
| //! |
| //! // Build a response with no body |
| //! let response = Response::builder() |
| //! .status(StatusCode::OK) |
| //! .body(()) |
| //! .unwrap(); |
| //! |
| //! // Send the response back to the client |
| //! respond.send_response(response, true) |
| //! .unwrap(); |
| //! } |
| //! |
| //! }); |
| //! } |
| //! } |
| //! } |
| //! ``` |
| //! |
| //! [prior knowledge]: http://httpwg.org/specs/rfc7540.html#known-http |
| //! [`handshake`]: fn.handshake.html |
| //! [HTTP/2 handshake]: http://httpwg.org/specs/rfc7540.html#ConnectionHeader |
| //! [`Builder`]: struct.Builder.html |
| //! [`Connection`]: struct.Connection.html |
| //! [`Connection::poll`]: struct.Connection.html#method.poll |
| //! [`Connection::poll_close`]: struct.Connection.html#method.poll_close |
| //! [`futures::Stream`]: https://docs.rs/futures/0.1/futures/stream/trait.Stream.html |
| //! [`http::Request<RecvStream>`]: ../struct.RecvStream.html |
| //! [`RecvStream`]: ../struct.RecvStream.html |
| //! [`SendStream`]: ../struct.SendStream.html |
| //! [`TcpListener`]: https://docs.rs/tokio-core/0.1/tokio_core/net/struct.TcpListener.html |
| |
| </span><span class="kw">use </span><span class="kw">crate</span>::codec::{Codec, UserError}; |
| <span class="kw">use </span><span class="kw">crate</span>::frame::{<span class="self">self</span>, Pseudo, PushPromiseHeaderError, Reason, Settings, StreamId}; |
| <span class="kw">use </span><span class="kw">crate</span>::proto::{<span class="self">self</span>, Config, Error, Prioritized}; |
| <span class="kw">use crate</span>::{FlowControl, PingPong, RecvStream, SendStream}; |
| |
| <span class="kw">use </span>bytes::{Buf, Bytes}; |
| <span class="kw">use </span>http::{HeaderMap, Method, Request, Response}; |
| <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::time::Duration; |
| <span class="kw">use </span>std::{fmt, io}; |
| <span class="kw">use </span>tokio::io::{AsyncRead, AsyncWrite, ReadBuf}; |
| <span class="kw">use </span>tracing::instrument::{Instrument, Instrumented}; |
| |
| <span class="doccomment">/// In progress HTTP/2 connection handshake future. |
| /// |
| /// This type implements `Future`, yielding a `Connection` instance once the |
| /// handshake has completed. |
| /// |
| /// The handshake is completed once the connection preface is fully received |
| /// from the client **and** the initial settings frame is sent to the client. |
| /// |
| /// The handshake future does not wait for the initial settings frame from the |
| /// client. |
| /// |
| /// See [module] level docs for more details. |
| /// |
| /// [module]: index.html |
| </span><span class="attribute">#[must_use = <span class="string">"futures do nothing unless polled"</span>] |
| </span><span class="kw">pub struct </span>Handshake<T, B: Buf = Bytes> { |
| <span class="doccomment">/// The config to pass to Connection::new after handshake succeeds. |
| </span>builder: Builder, |
| <span class="doccomment">/// The current state of the handshake. |
| </span>state: Handshaking<T, B>, |
| <span class="doccomment">/// Span tracking the handshake |
| </span>span: tracing::Span, |
| } |
| |
| <span class="doccomment">/// Accepts inbound HTTP/2 streams on a connection. |
| /// |
| /// A `Connection` is backed by an I/O resource (usually a TCP socket) and |
| /// implements the HTTP/2 server logic for that connection. It is responsible |
| /// for receiving inbound streams initiated by the client as well as driving the |
| /// internal state forward. |
| /// |
| /// `Connection` values are created by calling [`handshake`]. Once a |
| /// `Connection` value is obtained, the caller must call [`poll`] or |
| /// [`poll_close`] in order to drive the internal connection state forward. |
| /// |
| /// See [module level] documentation for more details |
| /// |
| /// [module level]: index.html |
| /// [`handshake`]: struct.Connection.html#method.handshake |
| /// [`poll`]: struct.Connection.html#method.poll |
| /// [`poll_close`]: struct.Connection.html#method.poll_close |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server; |
| /// # use h2::server::*; |
| /// # |
| /// # async fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) { |
| /// let mut server = server::handshake(my_io).await.unwrap(); |
| /// while let Some(request) = server.accept().await { |
| /// tokio::spawn(async move { |
| /// let (request, respond) = request.unwrap(); |
| /// // Process the request and send the response back to the client |
| /// // using `respond`. |
| /// }); |
| /// } |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="attribute">#[must_use = <span class="string">"streams do nothing unless polled"</span>] |
| </span><span class="kw">pub struct </span>Connection<T, B: Buf> { |
| connection: proto::Connection<T, Peer, B>, |
| } |
| |
| <span class="doccomment">/// Builds server connections with custom configuration values. |
| /// |
| /// Methods can be chained in order to set the configuration values. |
| /// |
| /// The server is constructed by calling [`handshake`] and passing the I/O |
| /// handle that will back the HTTP/2 server. |
| /// |
| /// New instances of `Builder` are obtained via [`Builder::new`]. |
| /// |
| /// See function level documentation for details on the various server |
| /// configuration settings. |
| /// |
| /// [`Builder::new`]: struct.Builder.html#method.new |
| /// [`handshake`]: struct.Builder.html#method.handshake |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .initial_window_size(1_000_000) |
| /// .max_concurrent_streams(1000) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="attribute">#[derive(Clone, Debug)] |
| </span><span class="kw">pub struct </span>Builder { |
| <span class="doccomment">/// Time to keep locally reset streams around before reaping. |
| </span>reset_stream_duration: Duration, |
| |
| <span class="doccomment">/// Maximum number of locally reset streams to keep at a time. |
| </span>reset_stream_max: usize, |
| |
| <span class="doccomment">/// Maximum number of remotely reset streams to allow in the pending |
| /// accept queue. |
| </span>pending_accept_reset_stream_max: usize, |
| |
| <span class="doccomment">/// Initial `Settings` frame to send as part of the handshake. |
| </span>settings: Settings, |
| |
| <span class="doccomment">/// Initial target window size for new connections. |
| </span>initial_target_connection_window_size: <span class="prelude-ty">Option</span><u32>, |
| |
| <span class="doccomment">/// Maximum amount of bytes to "buffer" for writing per stream. |
| </span>max_send_buffer_size: usize, |
| } |
| |
| <span class="doccomment">/// Send a response back to the client |
| /// |
| /// A `SendResponse` instance is provided when receiving a request and is used |
| /// to send the associated response back to the client. It is also used to |
| /// explicitly reset the stream with a custom reason. |
| /// |
| /// It will also be used to initiate push promises linked with the associated |
| /// stream. |
| /// |
| /// If the `SendResponse` instance is dropped without sending a response, then |
| /// the HTTP/2 stream will be reset. |
| /// |
| /// See [module] level docs for more details. |
| /// |
| /// [module]: index.html |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>SendResponse<B: Buf> { |
| inner: proto::StreamRef<B>, |
| } |
| |
| <span class="doccomment">/// Send a response to a promised request |
| /// |
| /// A `SendPushedResponse` instance is provided when promising a request and is used |
| /// to send the associated response to the client. It is also used to |
| /// explicitly reset the stream with a custom reason. |
| /// |
| /// It can not be used to initiate push promises. |
| /// |
| /// If the `SendPushedResponse` instance is dropped without sending a response, then |
| /// the HTTP/2 stream will be reset. |
| /// |
| /// See [module] level docs for more details. |
| /// |
| /// [module]: index.html |
| </span><span class="kw">pub struct </span>SendPushedResponse<B: Buf> { |
| inner: SendResponse<B>, |
| } |
| |
| <span class="comment">// Manual implementation necessary because of rust-lang/rust#26925 |
| </span><span class="kw">impl</span><B: Buf + fmt::Debug> fmt::Debug <span class="kw">for </span>SendPushedResponse<B> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| <span class="macro">write!</span>(f, <span class="string">"SendPushedResponse {{ {:?} }}"</span>, <span class="self">self</span>.inner) |
| } |
| } |
| |
| <span class="doccomment">/// Stages of an in-progress handshake. |
| </span><span class="kw">enum </span>Handshaking<T, B: Buf> { |
| <span class="doccomment">/// State 1. Connection is flushing pending SETTINGS frame. |
| </span>Flushing(Instrumented<Flush<T, Prioritized<B>>>), |
| <span class="doccomment">/// State 2. Connection is waiting for the client preface. |
| </span>ReadingPreface(Instrumented<ReadPreface<T, Prioritized<B>>>), |
| <span class="doccomment">/// State 3. Handshake is done, polling again would panic. |
| </span>Done, |
| } |
| |
| <span class="doccomment">/// Flush a Sink |
| </span><span class="kw">struct </span>Flush<T, B> { |
| codec: <span class="prelude-ty">Option</span><Codec<T, B>>, |
| } |
| |
| <span class="doccomment">/// Read the client connection preface |
| </span><span class="kw">struct </span>ReadPreface<T, B> { |
| codec: <span class="prelude-ty">Option</span><Codec<T, B>>, |
| pos: usize, |
| } |
| |
| <span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Peer; |
| |
| <span class="kw">const </span>PREFACE: [u8; <span class="number">24</span>] = <span class="kw-2">*</span><span class="string">b"PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"</span>; |
| |
| <span class="doccomment">/// Creates a new configured HTTP/2 server with default configuration |
| /// values backed by `io`. |
| /// |
| /// It is expected that `io` already be in an appropriate state to commence |
| /// the [HTTP/2 handshake]. See [Handshake] for more details. |
| /// |
| /// Returns a future which resolves to the [`Connection`] instance once the |
| /// HTTP/2 handshake has been completed. The returned [`Connection`] |
| /// instance will be using default configuration values. Use [`Builder`] to |
| /// customize the configuration values used by a [`Connection`] instance. |
| /// |
| /// [HTTP/2 handshake]: http://httpwg.org/specs/rfc7540.html#ConnectionHeader |
| /// [Handshake]: ../index.html#handshake |
| /// [`Connection`]: struct.Connection.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server; |
| /// # use h2::server::*; |
| /// # |
| /// # async fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # { |
| /// let connection = server::handshake(my_io).await.unwrap(); |
| /// // The HTTP/2 handshake has completed, now use `connection` to |
| /// // accept inbound HTTP/2 streams. |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>handshake<T>(io: T) -> Handshake<T, Bytes> |
| <span class="kw">where |
| </span>T: AsyncRead + AsyncWrite + Unpin, |
| { |
| Builder::new().handshake(io) |
| } |
| |
| <span class="comment">// ===== impl Connection ===== |
| |
| </span><span class="kw">impl</span><T, B> Connection<T, B> |
| <span class="kw">where |
| </span>T: AsyncRead + AsyncWrite + Unpin, |
| B: Buf, |
| { |
| <span class="kw">fn </span>handshake2(io: T, builder: Builder) -> Handshake<T, B> { |
| <span class="kw">let </span>span = <span class="macro">tracing::trace_span!</span>(<span class="string">"server_handshake"</span>); |
| <span class="kw">let </span>entered = span.enter(); |
| |
| <span class="comment">// Create the codec. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>codec = Codec::new(io); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(max) = builder.settings.max_frame_size() { |
| codec.set_max_recv_frame_size(max <span class="kw">as </span>usize); |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(max) = builder.settings.max_header_list_size() { |
| codec.set_max_recv_header_list_size(max <span class="kw">as </span>usize); |
| } |
| |
| <span class="comment">// Send initial settings frame. |
| </span>codec |
| .buffer(builder.settings.clone().into()) |
| .expect(<span class="string">"invalid SETTINGS frame"</span>); |
| |
| <span class="comment">// Create the handshake future. |
| </span><span class="kw">let </span>state = |
| Handshaking::Flushing(Flush::new(codec).instrument(<span class="macro">tracing::trace_span!</span>(<span class="string">"flush"</span>))); |
| |
| drop(entered); |
| |
| Handshake { |
| builder, |
| state, |
| span, |
| } |
| } |
| |
| <span class="doccomment">/// Accept the next incoming request on this connection. |
| </span><span class="kw">pub async fn </span>accept( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| ) -> <span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><(Request<RecvStream>, SendResponse<B>), <span class="kw">crate</span>::Error>> { |
| futures_util::future::poll_fn(<span class="kw">move </span>|cx| <span class="self">self</span>.poll_accept(cx)).<span class="kw">await |
| </span>} |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>poll_accept( |
| <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="prelude-ty">Option</span><<span class="prelude-ty">Result</span><(Request<RecvStream>, SendResponse<B>), <span class="kw">crate</span>::Error>>> { |
| <span class="comment">// Always try to advance the internal state. Getting Pending also is |
| // needed to allow this function to return Pending. |
| </span><span class="kw">if </span><span class="self">self</span>.poll_closed(cx)<span class="question-mark">?</span>.is_ready() { |
| <span class="comment">// If the socket is closed, don't return anything |
| // TODO: drop any pending streams |
| </span><span class="kw">return </span>Poll::Ready(<span class="prelude-val">None</span>); |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(inner) = <span class="self">self</span>.connection.next_incoming() { |
| <span class="macro">tracing::trace!</span>(<span class="string">"received incoming"</span>); |
| <span class="kw">let </span>(head, <span class="kw">_</span>) = inner.take_request().into_parts(); |
| <span class="kw">let </span>body = RecvStream::new(FlowControl::new(inner.clone_to_opaque())); |
| |
| <span class="kw">let </span>request = Request::from_parts(head, body); |
| <span class="kw">let </span>respond = SendResponse { inner }; |
| |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>((request, respond)))); |
| } |
| |
| Poll::Pending |
| } |
| |
| <span class="doccomment">/// Sets the target window size for the whole connection. |
| /// |
| /// If `size` is greater than the current value, then a `WINDOW_UPDATE` |
| /// frame will be immediately sent to the remote, increasing the connection |
| /// level window by `size - current_value`. |
| /// |
| /// If `size` is less than the current value, nothing will happen |
| /// immediately. However, as window capacity is released by |
| /// [`FlowControl`] instances, no `WINDOW_UPDATE` frames will be sent |
| /// out until the number of "in flight" bytes drops below `size`. |
| /// |
| /// The default value is 65,535. |
| /// |
| /// See [`FlowControl`] documentation for more details. |
| /// |
| /// [`FlowControl`]: ../struct.FlowControl.html |
| /// [library level]: ../index.html#flow-control |
| </span><span class="kw">pub fn </span>set_target_window_size(<span class="kw-2">&mut </span><span class="self">self</span>, size: u32) { |
| <span class="macro">assert!</span>(size <= proto::MAX_WINDOW_SIZE); |
| <span class="self">self</span>.connection.set_target_window_size(size); |
| } |
| |
| <span class="doccomment">/// Set a new `INITIAL_WINDOW_SIZE` setting (in octets) for stream-level |
| /// flow control for received data. |
| /// |
| /// The `SETTINGS` will be sent to the remote, and only applied once the |
| /// remote acknowledges the change. |
| /// |
| /// This can be used to increase or decrease the window size for existing |
| /// streams. |
| /// |
| /// # Errors |
| /// |
| /// Returns an error if a previous call is still pending acknowledgement |
| /// from the remote endpoint. |
| </span><span class="kw">pub fn </span>set_initial_window_size(<span class="kw-2">&mut </span><span class="self">self</span>, size: u32) -> <span class="prelude-ty">Result</span><(), <span class="kw">crate</span>::Error> { |
| <span class="macro">assert!</span>(size <= proto::MAX_WINDOW_SIZE); |
| <span class="self">self</span>.connection.set_initial_window_size(size)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// Enables the [extended CONNECT protocol]. |
| /// |
| /// [extended CONNECT protocol]: https://datatracker.ietf.org/doc/html/rfc8441#section-4 |
| /// |
| /// # Errors |
| /// |
| /// Returns an error if a previous call is still pending acknowledgement |
| /// from the remote endpoint. |
| </span><span class="kw">pub fn </span>enable_connect_protocol(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><(), <span class="kw">crate</span>::Error> { |
| <span class="self">self</span>.connection.set_enable_connect_protocol()<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// Returns `Ready` when the underlying connection has closed. |
| /// |
| /// If any new inbound streams are received during a call to `poll_closed`, |
| /// they will be queued and returned on the next call to [`poll_accept`]. |
| /// |
| /// This function will advance the internal connection state, driving |
| /// progress on all the other handles (e.g. [`RecvStream`] and [`SendStream`]). |
| /// |
| /// See [here](index.html#managing-the-connection) for more details. |
| /// |
| /// [`poll_accept`]: struct.Connection.html#method.poll_accept |
| /// [`RecvStream`]: ../struct.RecvStream.html |
| /// [`SendStream`]: ../struct.SendStream.html |
| </span><span class="kw">pub fn </span>poll_closed(<span class="kw-2">&mut </span><span class="self">self</span>, cx: <span class="kw-2">&mut </span>Context) -> Poll<<span class="prelude-ty">Result</span><(), <span class="kw">crate</span>::Error>> { |
| <span class="self">self</span>.connection.poll(cx).map_err(Into::into) |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| #[deprecated(note = <span class="string">"renamed to poll_closed"</span>)] |
| </span><span class="kw">pub fn </span>poll_close(<span class="kw-2">&mut </span><span class="self">self</span>, cx: <span class="kw-2">&mut </span>Context) -> Poll<<span class="prelude-ty">Result</span><(), <span class="kw">crate</span>::Error>> { |
| <span class="self">self</span>.poll_closed(cx) |
| } |
| |
| <span class="doccomment">/// Sets the connection to a GOAWAY state. |
| /// |
| /// Does not terminate the connection. Must continue being polled to close |
| /// connection. |
| /// |
| /// After flushing the GOAWAY frame, the connection is closed. Any |
| /// outstanding streams do not prevent the connection from closing. This |
| /// should usually be reserved for shutting down when something bad |
| /// external to `h2` has happened, and open streams cannot be properly |
| /// handled. |
| /// |
| /// For graceful shutdowns, see [`graceful_shutdown`](Connection::graceful_shutdown). |
| </span><span class="kw">pub fn </span>abrupt_shutdown(<span class="kw-2">&mut </span><span class="self">self</span>, reason: Reason) { |
| <span class="self">self</span>.connection.go_away_from_user(reason); |
| } |
| |
| <span class="doccomment">/// Starts a [graceful shutdown][1] process. |
| /// |
| /// Must continue being polled to close connection. |
| /// |
| /// It's possible to receive more requests after calling this method, since |
| /// they might have been in-flight from the client already. After about |
| /// 1 RTT, no new requests should be accepted. Once all active streams |
| /// have completed, the connection is closed. |
| /// |
| /// [1]: http://httpwg.org/specs/rfc7540.html#GOAWAY |
| </span><span class="kw">pub fn </span>graceful_shutdown(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.connection.go_away_gracefully(); |
| } |
| |
| <span class="doccomment">/// Takes a `PingPong` instance from the connection. |
| /// |
| /// # Note |
| /// |
| /// This may only be called once. Calling multiple times will return `None`. |
| </span><span class="kw">pub fn </span>ping_pong(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><PingPong> { |
| <span class="self">self</span>.connection.take_user_pings().map(PingPong::new) |
| } |
| |
| <span class="doccomment">/// Returns the maximum number of concurrent streams that may be initiated |
| /// by the server on this connection. |
| /// |
| /// This limit is configured by the client peer by sending the |
| /// [`SETTINGS_MAX_CONCURRENT_STREAMS` parameter][1] in a `SETTINGS` frame. |
| /// This method returns the currently acknowledged value received from the |
| /// remote. |
| /// |
| /// [1]: https://tools.ietf.org/html/rfc7540#section-5.1.2 |
| </span><span class="kw">pub fn </span>max_concurrent_send_streams(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.connection.max_send_streams() |
| } |
| |
| <span class="doccomment">/// Returns the maximum number of concurrent streams that may be initiated |
| /// by the client on this connection. |
| /// |
| /// This returns the value of the [`SETTINGS_MAX_CONCURRENT_STREAMS` |
| /// parameter][1] sent in a `SETTINGS` frame that has been |
| /// acknowledged by the remote peer. The value to be sent is configured by |
| /// the [`Builder::max_concurrent_streams`][2] method before handshaking |
| /// with the remote peer. |
| /// |
| /// [1]: https://tools.ietf.org/html/rfc7540#section-5.1.2 |
| /// [2]: ../struct.Builder.html#method.max_concurrent_streams |
| </span><span class="kw">pub fn </span>max_concurrent_recv_streams(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.connection.max_recv_streams() |
| } |
| |
| <span class="comment">// Could disappear at anytime. |
| </span><span class="attribute">#[doc(hidden)] |
| #[cfg(feature = <span class="string">"unstable"</span>)] |
| </span><span class="kw">pub fn </span>num_wired_streams(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.connection.num_wired_streams() |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"stream"</span>)] |
| </span><span class="kw">impl</span><T, B> futures_core::Stream <span class="kw">for </span>Connection<T, B> |
| <span class="kw">where |
| </span>T: AsyncRead + AsyncWrite + Unpin, |
| B: Buf, |
| { |
| <span class="kw">type </span>Item = <span class="prelude-ty">Result</span><(Request<RecvStream>, SendResponse<B>), <span class="kw">crate</span>::Error>; |
| |
| <span class="kw">fn </span>poll_next(<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>Context<<span class="lifetime">'_</span>>) -> Poll<<span class="prelude-ty">Option</span><<span class="self">Self</span>::Item>> { |
| <span class="self">self</span>.poll_accept(cx) |
| } |
| } |
| |
| <span class="kw">impl</span><T, B> fmt::Debug <span class="kw">for </span>Connection<T, B> |
| <span class="kw">where |
| </span>T: fmt::Debug, |
| B: fmt::Debug + Buf, |
| { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, fmt: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| fmt.debug_struct(<span class="string">"Connection"</span>) |
| .field(<span class="string">"connection"</span>, <span class="kw-2">&</span><span class="self">self</span>.connection) |
| .finish() |
| } |
| } |
| |
| <span class="comment">// ===== impl Builder ===== |
| |
| </span><span class="kw">impl </span>Builder { |
| <span class="doccomment">/// Returns a new server builder instance initialized with default |
| /// configuration values. |
| /// |
| /// Configuration methods can be chained on the return value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .initial_window_size(1_000_000) |
| /// .max_concurrent_streams(1000) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>new() -> Builder { |
| Builder { |
| reset_stream_duration: Duration::from_secs(proto::DEFAULT_RESET_STREAM_SECS), |
| reset_stream_max: proto::DEFAULT_RESET_STREAM_MAX, |
| pending_accept_reset_stream_max: proto::DEFAULT_REMOTE_RESET_STREAM_MAX, |
| settings: Settings::default(), |
| initial_target_connection_window_size: <span class="prelude-val">None</span>, |
| max_send_buffer_size: proto::DEFAULT_MAX_SEND_BUFFER_SIZE, |
| } |
| } |
| |
| <span class="doccomment">/// Indicates the initial window size (in octets) for stream-level |
| /// flow control for received data. |
| /// |
| /// The initial window of a stream is used as part of flow control. For more |
| /// details, see [`FlowControl`]. |
| /// |
| /// The default value is 65,535. |
| /// |
| /// [`FlowControl`]: ../struct.FlowControl.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .initial_window_size(1_000_000) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>initial_window_size(<span class="kw-2">&mut </span><span class="self">self</span>, size: u32) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.settings.set_initial_window_size(<span class="prelude-val">Some</span>(size)); |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Indicates the initial window size (in octets) for connection-level flow control |
| /// for received data. |
| /// |
| /// The initial window of a connection is used as part of flow control. For more details, |
| /// see [`FlowControl`]. |
| /// |
| /// The default value is 65,535. |
| /// |
| /// [`FlowControl`]: ../struct.FlowControl.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .initial_connection_window_size(1_000_000) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>initial_connection_window_size(<span class="kw-2">&mut </span><span class="self">self</span>, size: u32) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.initial_target_connection_window_size = <span class="prelude-val">Some</span>(size); |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Indicates the size (in octets) of the largest HTTP/2 frame payload that the |
| /// configured server is able to accept. |
| /// |
| /// The sender may send data frames that are **smaller** than this value, |
| /// but any data larger than `max` will be broken up into multiple `DATA` |
| /// frames. |
| /// |
| /// The value **must** be between 16,384 and 16,777,215. The default value is 16,384. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .max_frame_size(1_000_000) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| /// |
| /// # Panics |
| /// |
| /// This function panics if `max` is not within the legal range specified |
| /// above. |
| </span><span class="kw">pub fn </span>max_frame_size(<span class="kw-2">&mut </span><span class="self">self</span>, max: u32) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.settings.set_max_frame_size(<span class="prelude-val">Some</span>(max)); |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Sets the max size of received header frames. |
| /// |
| /// This advisory setting informs a peer of the maximum size of header list |
| /// that the sender is prepared to accept, in octets. The value is based on |
| /// the uncompressed size of header fields, including the length of the name |
| /// and value in octets plus an overhead of 32 octets for each header field. |
| /// |
| /// This setting is also used to limit the maximum amount of data that is |
| /// buffered to decode HEADERS frames. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .max_header_list_size(16 * 1024) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>max_header_list_size(<span class="kw-2">&mut </span><span class="self">self</span>, max: u32) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.settings.set_max_header_list_size(<span class="prelude-val">Some</span>(max)); |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Sets the maximum number of concurrent streams. |
| /// |
| /// The maximum concurrent streams setting only controls the maximum number |
| /// of streams that can be initiated by the remote peer. In other words, |
| /// when this setting is set to 100, this does not limit the number of |
| /// concurrent streams that can be created by the caller. |
| /// |
| /// It is recommended that this value be no smaller than 100, so as to not |
| /// unnecessarily limit parallelism. However, any value is legal, including |
| /// 0. If `max` is set to 0, then the remote will not be permitted to |
| /// initiate streams. |
| /// |
| /// Note that streams in the reserved state, i.e., push promises that have |
| /// been reserved but the stream has not started, do not count against this |
| /// setting. |
| /// |
| /// Also note that if the remote *does* exceed the value set here, it is not |
| /// a protocol level error. Instead, the `h2` library will immediately reset |
| /// the stream. |
| /// |
| /// See [Section 5.1.2] in the HTTP/2 spec for more details. |
| /// |
| /// [Section 5.1.2]: https://http2.github.io/http2-spec/#rfc.section.5.1.2 |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .max_concurrent_streams(1000) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>max_concurrent_streams(<span class="kw-2">&mut </span><span class="self">self</span>, max: u32) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.settings.set_max_concurrent_streams(<span class="prelude-val">Some</span>(max)); |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Sets the maximum number of concurrent locally reset streams. |
| /// |
| /// When a stream is explicitly reset by either calling |
| /// [`SendResponse::send_reset`] or by dropping a [`SendResponse`] instance |
| /// before completing the stream, the HTTP/2 specification requires that |
| /// any further frames received for that stream must be ignored for "some |
| /// time". |
| /// |
| /// In order to satisfy the specification, internal state must be maintained |
| /// to implement the behavior. This state grows linearly with the number of |
| /// streams that are locally reset. |
| /// |
| /// The `max_concurrent_reset_streams` setting configures sets an upper |
| /// bound on the amount of state that is maintained. When this max value is |
| /// reached, the oldest reset stream is purged from memory. |
| /// |
| /// Once the stream has been fully purged from memory, any additional frames |
| /// received for that stream will result in a connection level protocol |
| /// error, forcing the connection to terminate. |
| /// |
| /// The default value is 10. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .max_concurrent_reset_streams(1000) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>max_concurrent_reset_streams(<span class="kw-2">&mut </span><span class="self">self</span>, max: usize) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.reset_stream_max = max; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Sets the maximum number of pending-accept remotely-reset streams. |
| /// |
| /// Streams that have been received by the peer, but not accepted by the |
| /// user, can also receive a RST_STREAM. This is a legitimate pattern: one |
| /// could send a request and then shortly after, realize it is not needed, |
| /// sending a CANCEL. |
| /// |
| /// However, since those streams are now "closed", they don't count towards |
| /// the max concurrent streams. So, they will sit in the accept queue, |
| /// using memory. |
| /// |
| /// When the number of remotely-reset streams sitting in the pending-accept |
| /// queue reaches this maximum value, a connection error with the code of |
| /// `ENHANCE_YOUR_CALM` will be sent to the peer, and returned by the |
| /// `Future`. |
| /// |
| /// The default value is currently 20, but could change. |
| /// |
| /// # Examples |
| /// |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .max_pending_accept_reset_streams(100) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>max_pending_accept_reset_streams(<span class="kw-2">&mut </span><span class="self">self</span>, max: usize) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.pending_accept_reset_stream_max = max; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Sets the maximum send buffer size per stream. |
| /// |
| /// Once a stream has buffered up to (or over) the maximum, the stream's |
| /// flow control will not "poll" additional capacity. Once bytes for the |
| /// stream have been written to the connection, the send buffer capacity |
| /// will be freed up again. |
| /// |
| /// The default is currently ~400MB, but may change. |
| /// |
| /// # Panics |
| /// |
| /// This function panics if `max` is larger than `u32::MAX`. |
| </span><span class="kw">pub fn </span>max_send_buffer_size(<span class="kw-2">&mut </span><span class="self">self</span>, max: usize) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="macro">assert!</span>(max <= std::u32::MAX <span class="kw">as </span>usize); |
| <span class="self">self</span>.max_send_buffer_size = max; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Sets the maximum number of concurrent locally reset streams. |
| /// |
| /// When a stream is explicitly reset by either calling |
| /// [`SendResponse::send_reset`] or by dropping a [`SendResponse`] instance |
| /// before completing the stream, the HTTP/2 specification requires that |
| /// any further frames received for that stream must be ignored for "some |
| /// time". |
| /// |
| /// In order to satisfy the specification, internal state must be maintained |
| /// to implement the behavior. This state grows linearly with the number of |
| /// streams that are locally reset. |
| /// |
| /// The `reset_stream_duration` setting configures the max amount of time |
| /// this state will be maintained in memory. Once the duration elapses, the |
| /// stream state is purged from memory. |
| /// |
| /// Once the stream has been fully purged from memory, any additional frames |
| /// received for that stream will result in a connection level protocol |
| /// error, forcing the connection to terminate. |
| /// |
| /// The default value is 30 seconds. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # use std::time::Duration; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .reset_stream_duration(Duration::from_secs(10)) |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>reset_stream_duration(<span class="kw-2">&mut </span><span class="self">self</span>, dur: Duration) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.reset_stream_duration = dur; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Enables the [extended CONNECT protocol]. |
| /// |
| /// [extended CONNECT protocol]: https://datatracker.ietf.org/doc/html/rfc8441#section-4 |
| </span><span class="kw">pub fn </span>enable_connect_protocol(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.settings.set_enable_connect_protocol(<span class="prelude-val">Some</span>(<span class="number">1</span>)); |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Creates a new configured HTTP/2 server backed by `io`. |
| /// |
| /// It is expected that `io` already be in an appropriate state to commence |
| /// the [HTTP/2 handshake]. See [Handshake] for more details. |
| /// |
| /// Returns a future which resolves to the [`Connection`] instance once the |
| /// HTTP/2 handshake has been completed. |
| /// |
| /// This function also allows the caller to configure the send payload data |
| /// type. See [Outbound data type] for more details. |
| /// |
| /// [HTTP/2 handshake]: http://httpwg.org/specs/rfc7540.html#ConnectionHeader |
| /// [Handshake]: ../index.html#handshake |
| /// [`Connection`]: struct.Connection.html |
| /// [Outbound data type]: ../index.html#outbound-data-type. |
| /// |
| /// # Examples |
| /// |
| /// Basic usage: |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut = Builder::new() |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| /// |
| /// Configures the send-payload data type. In this case, the outbound data |
| /// type will be `&'static [u8]`. |
| /// |
| /// ``` |
| /// # use tokio::io::{AsyncRead, AsyncWrite}; |
| /// # use h2::server::*; |
| /// # |
| /// # fn doc<T: AsyncRead + AsyncWrite + Unpin>(my_io: T) |
| /// # -> Handshake<T, &'static [u8]> |
| /// # { |
| /// // `server_fut` is a future representing the completion of the HTTP/2 |
| /// // handshake. |
| /// let server_fut: Handshake<_, &'static [u8]> = Builder::new() |
| /// .handshake(my_io); |
| /// # server_fut |
| /// # } |
| /// # |
| /// # pub fn main() {} |
| /// ``` |
| </span><span class="kw">pub fn </span>handshake<T, B>(<span class="kw-2">&</span><span class="self">self</span>, io: T) -> Handshake<T, B> |
| <span class="kw">where |
| </span>T: AsyncRead + AsyncWrite + Unpin, |
| B: Buf, |
| { |
| Connection::handshake2(io, <span class="self">self</span>.clone()) |
| } |
| } |
| |
| <span class="kw">impl </span>Default <span class="kw">for </span>Builder { |
| <span class="kw">fn </span>default() -> Builder { |
| Builder::new() |
| } |
| } |
| |
| <span class="comment">// ===== impl SendResponse ===== |
| |
| </span><span class="kw">impl</span><B: Buf> SendResponse<B> { |
| <span class="doccomment">/// Send a response to a client request. |
| /// |
| /// On success, a [`SendStream`] instance is returned. This instance can be |
| /// used to stream the response body and send trailers. |
| /// |
| /// If a body or trailers will be sent on the returned [`SendStream`] |
| /// instance, then `end_of_stream` must be set to `false` when calling this |
| /// function. |
| /// |
| /// The [`SendResponse`] instance is already associated with a received |
| /// request. This function may only be called once per instance and only if |
| /// [`send_reset`] has not been previously called. |
| /// |
| /// [`SendResponse`]: # |
| /// [`SendStream`]: ../struct.SendStream.html |
| /// [`send_reset`]: #method.send_reset |
| </span><span class="kw">pub fn </span>send_response( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| response: Response<()>, |
| end_of_stream: bool, |
| ) -> <span class="prelude-ty">Result</span><SendStream<B>, <span class="kw">crate</span>::Error> { |
| <span class="self">self</span>.inner |
| .send_response(response, end_of_stream) |
| .map(|<span class="kw">_</span>| SendStream::new(<span class="self">self</span>.inner.clone())) |
| .map_err(Into::into) |
| } |
| |
| <span class="doccomment">/// Push a request and response to the client |
| /// |
| /// On success, a [`SendResponse`] instance is returned. |
| /// |
| /// [`SendResponse`]: # |
| </span><span class="kw">pub fn </span>push_request( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| request: Request<()>, |
| ) -> <span class="prelude-ty">Result</span><SendPushedResponse<B>, <span class="kw">crate</span>::Error> { |
| <span class="self">self</span>.inner |
| .send_push_promise(request) |
| .map(|inner| SendPushedResponse { |
| inner: SendResponse { inner }, |
| }) |
| .map_err(Into::into) |
| } |
| |
| <span class="doccomment">/// Send a stream reset to the peer. |
| /// |
| /// This essentially cancels the stream, including any inbound or outbound |
| /// data streams. |
| /// |
| /// If this function is called before [`send_response`], a call to |
| /// [`send_response`] will result in an error. |
| /// |
| /// If this function is called while a [`SendStream`] instance is active, |
| /// any further use of the instance will result in an error. |
| /// |
| /// This function should only be called once. |
| /// |
| /// [`send_response`]: #method.send_response |
| /// [`SendStream`]: ../struct.SendStream.html |
| </span><span class="kw">pub fn </span>send_reset(<span class="kw-2">&mut </span><span class="self">self</span>, reason: Reason) { |
| <span class="self">self</span>.inner.send_reset(reason) |
| } |
| |
| <span class="doccomment">/// Polls to be notified when the client resets this stream. |
| /// |
| /// If stream is still open, this returns `Poll::Pending`, and |
| /// registers the task to be notified if a `RST_STREAM` is received. |
| /// |
| /// If a `RST_STREAM` frame is received for this stream, calling this |
| /// method will yield the `Reason` for the reset. |
| /// |
| /// # Error |
| /// |
| /// Calling this method after having called `send_response` will return |
| /// a user error. |
| </span><span class="kw">pub fn </span>poll_reset(<span class="kw-2">&mut </span><span class="self">self</span>, cx: <span class="kw-2">&mut </span>Context) -> Poll<<span class="prelude-ty">Result</span><Reason, <span class="kw">crate</span>::Error>> { |
| <span class="self">self</span>.inner.poll_reset(cx, proto::PollReset::AwaitingHeaders) |
| } |
| |
| <span class="doccomment">/// Returns the stream ID of the response stream. |
| /// |
| /// # Panics |
| /// |
| /// If the lock on the stream store has been poisoned. |
| </span><span class="kw">pub fn </span>stream_id(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw">crate</span>::StreamId { |
| <span class="kw">crate</span>::StreamId::from_internal(<span class="self">self</span>.inner.stream_id()) |
| } |
| } |
| |
| <span class="comment">// ===== impl SendPushedResponse ===== |
| |
| </span><span class="kw">impl</span><B: Buf> SendPushedResponse<B> { |
| <span class="doccomment">/// Send a response to a promised request. |
| /// |
| /// On success, a [`SendStream`] instance is returned. This instance can be |
| /// used to stream the response body and send trailers. |
| /// |
| /// If a body or trailers will be sent on the returned [`SendStream`] |
| /// instance, then `end_of_stream` must be set to `false` when calling this |
| /// function. |
| /// |
| /// The [`SendPushedResponse`] instance is associated with a promised |
| /// request. This function may only be called once per instance and only if |
| /// [`send_reset`] has not been previously called. |
| /// |
| /// [`SendPushedResponse`]: # |
| /// [`SendStream`]: ../struct.SendStream.html |
| /// [`send_reset`]: #method.send_reset |
| </span><span class="kw">pub fn </span>send_response( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| response: Response<()>, |
| end_of_stream: bool, |
| ) -> <span class="prelude-ty">Result</span><SendStream<B>, <span class="kw">crate</span>::Error> { |
| <span class="self">self</span>.inner.send_response(response, end_of_stream) |
| } |
| |
| <span class="doccomment">/// Send a stream reset to the peer. |
| /// |
| /// This essentially cancels the stream, including any inbound or outbound |
| /// data streams. |
| /// |
| /// If this function is called before [`send_response`], a call to |
| /// [`send_response`] will result in an error. |
| /// |
| /// If this function is called while a [`SendStream`] instance is active, |
| /// any further use of the instance will result in an error. |
| /// |
| /// This function should only be called once. |
| /// |
| /// [`send_response`]: #method.send_response |
| /// [`SendStream`]: ../struct.SendStream.html |
| </span><span class="kw">pub fn </span>send_reset(<span class="kw-2">&mut </span><span class="self">self</span>, reason: Reason) { |
| <span class="self">self</span>.inner.send_reset(reason) |
| } |
| |
| <span class="doccomment">/// Polls to be notified when the client resets this stream. |
| /// |
| /// If stream is still open, this returns `Poll::Pending`, and |
| /// registers the task to be notified if a `RST_STREAM` is received. |
| /// |
| /// If a `RST_STREAM` frame is received for this stream, calling this |
| /// method will yield the `Reason` for the reset. |
| /// |
| /// # Error |
| /// |
| /// Calling this method after having called `send_response` will return |
| /// a user error. |
| </span><span class="kw">pub fn </span>poll_reset(<span class="kw-2">&mut </span><span class="self">self</span>, cx: <span class="kw-2">&mut </span>Context) -> Poll<<span class="prelude-ty">Result</span><Reason, <span class="kw">crate</span>::Error>> { |
| <span class="self">self</span>.inner.poll_reset(cx) |
| } |
| |
| <span class="doccomment">/// Returns the stream ID of the response stream. |
| /// |
| /// # Panics |
| /// |
| /// If the lock on the stream store has been poisoned. |
| </span><span class="kw">pub fn </span>stream_id(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw">crate</span>::StreamId { |
| <span class="self">self</span>.inner.stream_id() |
| } |
| } |
| |
| <span class="comment">// ===== impl Flush ===== |
| |
| </span><span class="kw">impl</span><T, B: Buf> Flush<T, B> { |
| <span class="kw">fn </span>new(codec: Codec<T, B>) -> <span class="self">Self </span>{ |
| Flush { codec: <span class="prelude-val">Some</span>(codec) } |
| } |
| } |
| |
| <span class="kw">impl</span><T, B> Future <span class="kw">for </span>Flush<T, B> |
| <span class="kw">where |
| </span>T: AsyncWrite + Unpin, |
| B: Buf, |
| { |
| <span class="kw">type </span>Output = <span class="prelude-ty">Result</span><Codec<T, B>, <span class="kw">crate</span>::Error>; |
| |
| <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>Context<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> { |
| <span class="comment">// Flush the codec |
| </span><span class="macro">ready!</span>(<span class="self">self</span>.codec.as_mut().unwrap().flush(cx)).map_err(<span class="kw">crate</span>::Error::from_io)<span class="question-mark">?</span>; |
| |
| <span class="comment">// Return the codec |
| </span>Poll::Ready(<span class="prelude-val">Ok</span>(<span class="self">self</span>.codec.take().unwrap())) |
| } |
| } |
| |
| <span class="kw">impl</span><T, B: Buf> ReadPreface<T, B> { |
| <span class="kw">fn </span>new(codec: Codec<T, B>) -> <span class="self">Self </span>{ |
| ReadPreface { |
| codec: <span class="prelude-val">Some</span>(codec), |
| pos: <span class="number">0</span>, |
| } |
| } |
| |
| <span class="kw">fn </span>inner_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>T { |
| <span class="self">self</span>.codec.as_mut().unwrap().get_mut() |
| } |
| } |
| |
| <span class="kw">impl</span><T, B> Future <span class="kw">for </span>ReadPreface<T, B> |
| <span class="kw">where |
| </span>T: AsyncRead + Unpin, |
| B: Buf, |
| { |
| <span class="kw">type </span>Output = <span class="prelude-ty">Result</span><Codec<T, B>, <span class="kw">crate</span>::Error>; |
| |
| <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>Context<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">24</span>]; |
| <span class="kw">let </span><span class="kw-2">mut </span>rem = PREFACE.len() - <span class="self">self</span>.pos; |
| |
| <span class="kw">while </span>rem > <span class="number">0 </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = ReadBuf::new(<span class="kw-2">&mut </span>buf[..rem]); |
| <span class="macro">ready!</span>(Pin::new(<span class="self">self</span>.inner_mut()).poll_read(cx, <span class="kw-2">&mut </span>buf)) |
| .map_err(<span class="kw">crate</span>::Error::from_io)<span class="question-mark">?</span>; |
| <span class="kw">let </span>n = buf.filled().len(); |
| <span class="kw">if </span>n == <span class="number">0 </span>{ |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::Error::from_io(io::Error::new( |
| io::ErrorKind::UnexpectedEof, |
| <span class="string">"connection closed before reading preface"</span>, |
| )))); |
| } |
| |
| <span class="kw">if </span><span class="kw-2">&</span>PREFACE[<span class="self">self</span>.pos..<span class="self">self</span>.pos + n] != buf.filled() { |
| <span class="macro">proto_err!</span>(conn: <span class="string">"read_preface: invalid preface"</span>); |
| <span class="comment">// TODO: Should this just write the GO_AWAY frame directly? |
| </span><span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(Error::library_go_away(Reason::PROTOCOL_ERROR).into())); |
| } |
| |
| <span class="self">self</span>.pos += n; |
| rem -= n; <span class="comment">// TODO test |
| </span>} |
| |
| Poll::Ready(<span class="prelude-val">Ok</span>(<span class="self">self</span>.codec.take().unwrap())) |
| } |
| } |
| |
| <span class="comment">// ===== impl Handshake ===== |
| |
| </span><span class="kw">impl</span><T, B: Buf> Future <span class="kw">for </span>Handshake<T, B> |
| <span class="kw">where |
| </span>T: AsyncRead + AsyncWrite + Unpin, |
| B: Buf, |
| { |
| <span class="kw">type </span>Output = <span class="prelude-ty">Result</span><Connection<T, B>, <span class="kw">crate</span>::Error>; |
| |
| <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>Context<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> { |
| <span class="kw">let </span>span = <span class="self">self</span>.span.clone(); <span class="comment">// XXX(eliza): T_T |
| </span><span class="kw">let </span>_e = span.enter(); |
| <span class="macro">tracing::trace!</span>(state = <span class="question-mark">?</span><span class="self">self</span>.state); |
| |
| <span class="kw">loop </span>{ |
| <span class="kw">match </span><span class="kw-2">&mut </span><span class="self">self</span>.state { |
| Handshaking::Flushing(flush) => { |
| <span class="comment">// We're currently flushing a pending SETTINGS frame. Poll the |
| // flush future, and, if it's completed, advance our state to wait |
| // for the client preface. |
| </span><span class="kw">let </span>codec = <span class="kw">match </span>Pin::new(flush).poll(cx)<span class="question-mark">? </span>{ |
| Poll::Pending => { |
| <span class="macro">tracing::trace!</span>(flush.poll = %<span class="string">"Pending"</span>); |
| <span class="kw">return </span>Poll::Pending; |
| } |
| Poll::Ready(flushed) => { |
| <span class="macro">tracing::trace!</span>(flush.poll = %<span class="string">"Ready"</span>); |
| flushed |
| } |
| }; |
| <span class="self">self</span>.state = Handshaking::ReadingPreface( |
| ReadPreface::new(codec).instrument(<span class="macro">tracing::trace_span!</span>(<span class="string">"read_preface"</span>)), |
| ); |
| } |
| Handshaking::ReadingPreface(read) => { |
| <span class="kw">let </span>codec = <span class="macro">ready!</span>(Pin::new(read).poll(cx)<span class="question-mark">?</span>); |
| |
| <span class="self">self</span>.state = Handshaking::Done; |
| |
| <span class="kw">let </span>connection = proto::Connection::new( |
| codec, |
| Config { |
| next_stream_id: <span class="number">2</span>.into(), |
| <span class="comment">// Server does not need to locally initiate any streams |
| </span>initial_max_send_streams: <span class="number">0</span>, |
| max_send_buffer_size: <span class="self">self</span>.builder.max_send_buffer_size, |
| reset_stream_duration: <span class="self">self</span>.builder.reset_stream_duration, |
| reset_stream_max: <span class="self">self</span>.builder.reset_stream_max, |
| remote_reset_stream_max: <span class="self">self</span>.builder.pending_accept_reset_stream_max, |
| settings: <span class="self">self</span>.builder.settings.clone(), |
| }, |
| ); |
| |
| <span class="macro">tracing::trace!</span>(<span class="string">"connection established!"</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>c = Connection { connection }; |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(sz) = <span class="self">self</span>.builder.initial_target_connection_window_size { |
| c.set_target_window_size(sz); |
| } |
| |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(c)); |
| } |
| Handshaking::Done => { |
| <span class="macro">panic!</span>(<span class="string">"Handshaking::poll() called again after handshaking was complete"</span>) |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><T, B> fmt::Debug <span class="kw">for </span>Handshake<T, B> |
| <span class="kw">where |
| </span>T: AsyncRead + AsyncWrite + fmt::Debug, |
| B: fmt::Debug + Buf, |
| { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, fmt: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| <span class="macro">write!</span>(fmt, <span class="string">"server::Handshake"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>Peer { |
| <span class="kw">pub fn </span>convert_send_message( |
| id: StreamId, |
| response: Response<()>, |
| end_of_stream: bool, |
| ) -> frame::Headers { |
| <span class="kw">use </span>http::response::Parts; |
| |
| <span class="comment">// Extract the components of the HTTP request |
| </span><span class="kw">let </span>( |
| Parts { |
| status, headers, .. |
| }, |
| <span class="kw">_</span>, |
| ) = response.into_parts(); |
| |
| <span class="comment">// Build the set pseudo header set. All requests will include `method` |
| // and `path`. |
| </span><span class="kw">let </span>pseudo = Pseudo::response(status); |
| |
| <span class="comment">// Create the HEADERS frame |
| </span><span class="kw">let </span><span class="kw-2">mut </span>frame = frame::Headers::new(id, pseudo, headers); |
| |
| <span class="kw">if </span>end_of_stream { |
| frame.set_end_stream() |
| } |
| |
| frame |
| } |
| |
| <span class="kw">pub fn </span>convert_push_message( |
| stream_id: StreamId, |
| promised_id: StreamId, |
| request: Request<()>, |
| ) -> <span class="prelude-ty">Result</span><frame::PushPromise, UserError> { |
| <span class="kw">use </span>http::request::Parts; |
| |
| <span class="kw">if let </span><span class="prelude-val">Err</span>(e) = frame::PushPromise::validate_request(<span class="kw-2">&</span>request) { |
| <span class="kw">use </span>PushPromiseHeaderError::<span class="kw-2">*</span>; |
| <span class="kw">match </span>e { |
| NotSafeAndCacheable => <span class="macro">tracing::debug!</span>( |
| <span class="question-mark">?</span>promised_id, |
| <span class="string">"convert_push_message: method {} is not safe and cacheable"</span>, |
| request.method(), |
| ), |
| InvalidContentLength(e) => <span class="macro">tracing::debug!</span>( |
| <span class="question-mark">?</span>promised_id, |
| <span class="string">"convert_push_message; promised request has invalid content-length {:?}"</span>, |
| e, |
| ), |
| } |
| <span class="kw">return </span><span class="prelude-val">Err</span>(UserError::MalformedHeaders); |
| } |
| |
| <span class="comment">// Extract the components of the HTTP request |
| </span><span class="kw">let </span>( |
| Parts { |
| method, |
| uri, |
| headers, |
| .. |
| }, |
| <span class="kw">_</span>, |
| ) = request.into_parts(); |
| |
| <span class="kw">let </span>pseudo = Pseudo::request(method, uri, <span class="prelude-val">None</span>); |
| |
| <span class="prelude-val">Ok</span>(frame::PushPromise::new( |
| stream_id, |
| promised_id, |
| pseudo, |
| headers, |
| )) |
| } |
| } |
| |
| <span class="kw">impl </span>proto::Peer <span class="kw">for </span>Peer { |
| <span class="kw">type </span>Poll = Request<()>; |
| |
| <span class="kw">const </span>NAME: <span class="kw-2">&</span><span class="lifetime">'static </span>str = <span class="string">"Server"</span>; |
| |
| <span class="kw">fn </span>is_server() -> bool { |
| <span class="bool-val">true |
| </span>} |
| |
| <span class="kw">fn </span>r#dyn() -> proto::DynPeer { |
| proto::DynPeer::Server |
| } |
| |
| <span class="kw">fn </span>convert_poll_message( |
| pseudo: Pseudo, |
| fields: HeaderMap, |
| stream_id: StreamId, |
| ) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Poll, Error> { |
| <span class="kw">use </span>http::{uri, Version}; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>b = Request::builder(); |
| |
| <span class="macro">macro_rules! </span>malformed { |
| ($(<span class="macro-nonterminal">$arg</span>:tt)<span class="kw-2">*</span>) => {{ |
| <span class="macro">tracing::debug!</span>($(<span class="macro-nonterminal">$arg</span>)<span class="kw-2">*</span>); |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::library_reset(stream_id, Reason::PROTOCOL_ERROR)); |
| }} |
| } |
| |
| b = b.version(Version::HTTP_2); |
| |
| <span class="kw">let </span>is_connect; |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(method) = pseudo.method { |
| is_connect = method == Method::CONNECT; |
| b = b.method(method); |
| } <span class="kw">else </span>{ |
| <span class="macro">malformed!</span>(<span class="string">"malformed headers: missing method"</span>); |
| } |
| |
| <span class="kw">let </span>has_protocol = pseudo.protocol.is_some(); |
| <span class="kw">if </span>has_protocol { |
| <span class="kw">if </span>is_connect { |
| <span class="comment">// Assert that we have the right type. |
| </span>b = b.extension::<<span class="kw">crate</span>::ext::Protocol>(pseudo.protocol.unwrap()); |
| } <span class="kw">else </span>{ |
| <span class="macro">malformed!</span>(<span class="string">"malformed headers: :protocol on non-CONNECT request"</span>); |
| } |
| } |
| |
| <span class="kw">if </span>pseudo.status.is_some() { |
| <span class="macro">malformed!</span>(<span class="string">"malformed headers: :status field on request"</span>); |
| } |
| |
| <span class="comment">// Convert the URI |
| </span><span class="kw">let </span><span class="kw-2">mut </span>parts = uri::Parts::default(); |
| |
| <span class="comment">// A request translated from HTTP/1 must not include the :authority |
| // header |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>(authority) = pseudo.authority { |
| <span class="kw">let </span>maybe_authority = uri::Authority::from_maybe_shared(authority.clone().into_inner()); |
| parts.authority = <span class="prelude-val">Some</span>(maybe_authority.or_else(|why| { |
| <span class="macro">malformed!</span>( |
| <span class="string">"malformed headers: malformed authority ({:?}): {}"</span>, |
| authority, |
| why, |
| ) |
| })<span class="question-mark">?</span>); |
| } |
| |
| <span class="comment">// A :scheme is required, except CONNECT. |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>(scheme) = pseudo.scheme { |
| <span class="kw">if </span>is_connect && !has_protocol { |
| <span class="macro">malformed!</span>(<span class="string">"malformed headers: :scheme in CONNECT"</span>); |
| } |
| <span class="kw">let </span>maybe_scheme = scheme.parse(); |
| <span class="kw">let </span>scheme = maybe_scheme.or_else(|why| { |
| <span class="macro">malformed!</span>( |
| <span class="string">"malformed headers: malformed scheme ({:?}): {}"</span>, |
| scheme, |
| why, |
| ) |
| })<span class="question-mark">?</span>; |
| |
| <span class="comment">// It's not possible to build an `Uri` from a scheme and path. So, |
| // after validating is was a valid scheme, we just have to drop it |
| // if there isn't an :authority. |
| </span><span class="kw">if </span>parts.authority.is_some() { |
| parts.scheme = <span class="prelude-val">Some</span>(scheme); |
| } |
| } <span class="kw">else if </span>!is_connect || has_protocol { |
| <span class="macro">malformed!</span>(<span class="string">"malformed headers: missing scheme"</span>); |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(path) = pseudo.path { |
| <span class="kw">if </span>is_connect && !has_protocol { |
| <span class="macro">malformed!</span>(<span class="string">"malformed headers: :path in CONNECT"</span>); |
| } |
| |
| <span class="comment">// This cannot be empty |
| </span><span class="kw">if </span>path.is_empty() { |
| <span class="macro">malformed!</span>(<span class="string">"malformed headers: missing path"</span>); |
| } |
| |
| <span class="kw">let </span>maybe_path = uri::PathAndQuery::from_maybe_shared(path.clone().into_inner()); |
| parts.path_and_query = <span class="prelude-val">Some</span>(maybe_path.or_else(|why| { |
| <span class="macro">malformed!</span>(<span class="string">"malformed headers: malformed path ({:?}): {}"</span>, path, why,) |
| })<span class="question-mark">?</span>); |
| } <span class="kw">else if </span>is_connect && has_protocol { |
| <span class="macro">malformed!</span>(<span class="string">"malformed headers: missing path in extended CONNECT"</span>); |
| } |
| |
| b = b.uri(parts); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>request = <span class="kw">match </span>b.body(()) { |
| <span class="prelude-val">Ok</span>(request) => request, |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="comment">// TODO: Should there be more specialized handling for different |
| // kinds of errors |
| </span><span class="macro">proto_err!</span>(stream: <span class="string">"error building request: {}; stream={:?}"</span>, e, stream_id); |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::library_reset(stream_id, Reason::PROTOCOL_ERROR)); |
| } |
| }; |
| |
| <span class="kw-2">*</span>request.headers_mut() = fields; |
| |
| <span class="prelude-val">Ok</span>(request) |
| } |
| } |
| |
| <span class="comment">// ===== impl Handshaking ===== |
| |
| </span><span class="kw">impl</span><T, B> fmt::Debug <span class="kw">for </span>Handshaking<T, B> |
| <span class="kw">where |
| </span>B: Buf, |
| { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> <span class="prelude-ty">Result</span><(), fmt::Error> { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Handshaking::Flushing(<span class="kw">_</span>) => f.write_str(<span class="string">"Flushing(_)"</span>), |
| Handshaking::ReadingPreface(<span class="kw">_</span>) => f.write_str(<span class="string">"ReadingPreface(_)"</span>), |
| Handshaking::Done => f.write_str(<span class="string">"Done"</span>), |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="h2" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |