chore: add vendor directory

1 files changed, 545 insertions, 0 deletions

diff --git a/vendor/hyper/src/proto/h2/server.rs b/vendor/hyper/src/proto/h2/server.rs
new file mode 100644
index 00000000..a8a20dd6
--- /dev/null
+++ b/vendor/hyper/src/proto/h2/server.rs
@@ -0,0 +1,545 @@
+use std::error::Error as StdError;
+use std::future::Future;
+use std::pin::Pin;
+use std::task::{Context, Poll};
+use std::time::Duration;
+
+use bytes::Bytes;
+use futures_util::ready;
+use h2::server::{Connection, Handshake, SendResponse};
+use h2::{Reason, RecvStream};
+use http::{Method, Request};
+use pin_project_lite::pin_project;
+
+use super::{ping, PipeToSendStream, SendBuf};
+use crate::body::{Body, Incoming as IncomingBody};
+use crate::common::date;
+use crate::common::io::Compat;
+use crate::common::time::Time;
+use crate::ext::Protocol;
+use crate::headers;
+use crate::proto::h2::ping::Recorder;
+use crate::proto::h2::{H2Upgraded, UpgradedSendStream};
+use crate::proto::Dispatched;
+use crate::rt::bounds::Http2ServerConnExec;
+use crate::rt::{Read, Write};
+use crate::service::HttpService;
+
+use crate::upgrade::{OnUpgrade, Pending, Upgraded};
+use crate::Response;
+
+// 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.
+const DEFAULT_CONN_WINDOW: u32 = 1024 * 1024; // 1mb
+const DEFAULT_STREAM_WINDOW: u32 = 1024 * 1024; // 1mb
+const DEFAULT_MAX_FRAME_SIZE: u32 = 1024 * 16; // 16kb
+const DEFAULT_MAX_SEND_BUF_SIZE: usize = 1024 * 400; // 400kb
+const DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE: u32 = 1024 * 16; // 16kb
+const DEFAULT_MAX_LOCAL_ERROR_RESET_STREAMS: usize = 1024;
+
+#[derive(Clone, Debug)]
+pub(crate) struct Config {
+    pub(crate) adaptive_window: bool,
+    pub(crate) initial_conn_window_size: u32,
+    pub(crate) initial_stream_window_size: u32,
+    pub(crate) max_frame_size: u32,
+    pub(crate) enable_connect_protocol: bool,
+    pub(crate) max_concurrent_streams: Option<u32>,
+    pub(crate) max_pending_accept_reset_streams: Option<usize>,
+    pub(crate) max_local_error_reset_streams: Option<usize>,
+    pub(crate) keep_alive_interval: Option<Duration>,
+    pub(crate) keep_alive_timeout: Duration,
+    pub(crate) max_send_buffer_size: usize,
+    pub(crate) max_header_list_size: u32,
+    pub(crate) date_header: bool,
+}
+
+impl Default for Config {
+    fn default() -> Config {
+        Config {
+            adaptive_window: false,
+            initial_conn_window_size: DEFAULT_CONN_WINDOW,
+            initial_stream_window_size: DEFAULT_STREAM_WINDOW,
+            max_frame_size: DEFAULT_MAX_FRAME_SIZE,
+            enable_connect_protocol: false,
+            max_concurrent_streams: Some(200),
+            max_pending_accept_reset_streams: None,
+            max_local_error_reset_streams: Some(DEFAULT_MAX_LOCAL_ERROR_RESET_STREAMS),
+            keep_alive_interval: None,
+            keep_alive_timeout: Duration::from_secs(20),
+            max_send_buffer_size: DEFAULT_MAX_SEND_BUF_SIZE,
+            max_header_list_size: DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE,
+            date_header: true,
+        }
+    }
+}
+
+pin_project! {
+    pub(crate) struct Server<T, S, B, E>
+    where
+        S: HttpService<IncomingBody>,
+        B: Body,
+    {
+        exec: E,
+        timer: Time,
+        service: S,
+        state: State<T, B>,
+        date_header: bool,
+        close_pending: bool
+    }
+}
+
+enum State<T, B>
+where
+    B: Body,
+{
+    Handshaking {
+        ping_config: ping::Config,
+        hs: Handshake<Compat<T>, SendBuf<B::Data>>,
+    },
+    Serving(Serving<T, B>),
+}
+
+struct Serving<T, B>
+where
+    B: Body,
+{
+    ping: Option<(ping::Recorder, ping::Ponger)>,
+    conn: Connection<Compat<T>, SendBuf<B::Data>>,
+    closing: Option<crate::Error>,
+    date_header: bool,
+}
+
+impl<T, S, B, E> Server<T, S, B, E>
+where
+    T: Read + Write + Unpin,
+    S: HttpService<IncomingBody, ResBody = B>,
+    S::Error: Into<Box<dyn StdError + Send + Sync>>,
+    B: Body + 'static,
+    E: Http2ServerConnExec<S::Future, B>,
+{
+    pub(crate) fn new(
+        io: T,
+        service: S,
+        config: &Config,
+        exec: E,
+        timer: Time,
+    ) -> Server<T, S, B, E> {
+        let mut 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_local_error_reset_streams(config.max_local_error_reset_streams)
+            .max_send_buffer_size(config.max_send_buffer_size);
+        if let Some(max) = config.max_concurrent_streams {
+            builder.max_concurrent_streams(max);
+        }
+        if let Some(max) = config.max_pending_accept_reset_streams {
+            builder.max_pending_accept_reset_streams(max);
+        }
+        if config.enable_connect_protocol {
+            builder.enable_connect_protocol();
+        }
+        let handshake = builder.handshake(Compat::new(io));
+
+        let bdp = if config.adaptive_window {
+            Some(config.initial_stream_window_size)
+        } else {
+            None
+        };
+
+        let ping_config = ping::Config {
+            bdp_initial_window: bdp,
+            keep_alive_interval: config.keep_alive_interval,
+            keep_alive_timeout: config.keep_alive_timeout,
+            // If keep-alive is enabled for servers, always enabled while
+            // idle, so it can more aggressively close dead connections.
+            keep_alive_while_idle: true,
+        };
+
+        Server {
+            exec,
+            timer,
+            state: State::Handshaking {
+                ping_config,
+                hs: handshake,
+            },
+            service,
+            date_header: config.date_header,
+            close_pending: false,
+        }
+    }
+
+    pub(crate) fn graceful_shutdown(&mut self) {
+        trace!("graceful_shutdown");
+        match self.state {
+            State::Handshaking { .. } => {
+                self.close_pending = true;
+            }
+            State::Serving(ref mut srv) => {
+                if srv.closing.is_none() {
+                    srv.conn.graceful_shutdown();
+                }
+            }
+        }
+    }
+}
+
+impl<T, S, B, E> Future for Server<T, S, B, E>
+where
+    T: Read + Write + Unpin,
+    S: HttpService<IncomingBody, ResBody = B>,
+    S::Error: Into<Box<dyn StdError + Send + Sync>>,
+    B: Body + 'static,
+    E: Http2ServerConnExec<S::Future, B>,
+{
+    type Output = crate::Result<Dispatched>;
+
+    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        let me = &mut *self;
+        loop {
+            let next = match me.state {
+                State::Handshaking {
+                    ref mut hs,
+                    ref ping_config,
+                } => {
+                    let mut conn = ready!(Pin::new(hs).poll(cx).map_err(crate::Error::new_h2))?;
+                    let ping = if ping_config.is_enabled() {
+                        let pp = conn.ping_pong().expect("conn.ping_pong");
+                        Some(ping::channel(pp, ping_config.clone(), me.timer.clone()))
+                    } else {
+                        None
+                    };
+                    State::Serving(Serving {
+                        ping,
+                        conn,
+                        closing: None,
+                        date_header: me.date_header,
+                    })
+                }
+                State::Serving(ref mut srv) => {
+                    // graceful_shutdown was called before handshaking finished,
+                    if me.close_pending && srv.closing.is_none() {
+                        srv.conn.graceful_shutdown();
+                    }
+                    ready!(srv.poll_server(cx, &mut me.service, &mut me.exec))?;
+                    return Poll::Ready(Ok(Dispatched::Shutdown));
+                }
+            };
+            me.state = next;
+        }
+    }
+}
+
+impl<T, B> Serving<T, B>
+where
+    T: Read + Write + Unpin,
+    B: Body + 'static,
+{
+    fn poll_server<S, E>(
+        &mut self,
+        cx: &mut Context<'_>,
+        service: &mut S,
+        exec: &mut E,
+    ) -> Poll<crate::Result<()>>
+    where
+        S: HttpService<IncomingBody, ResBody = B>,
+        S::Error: Into<Box<dyn StdError + Send + Sync>>,
+        E: Http2ServerConnExec<S::Future, B>,
+    {
+        if self.closing.is_none() {
+            loop {
+                self.poll_ping(cx);
+
+                match ready!(self.conn.poll_accept(cx)) {
+                    Some(Ok((req, mut respond))) => {
+                        trace!("incoming request");
+                        let content_length = headers::content_length_parse_all(req.headers());
+                        let ping = self
+                            .ping
+                            .as_ref()
+                            .map(|ping| ping.0.clone())
+                            .unwrap_or_else(ping::disabled);
+
+                        // Record the headers received
+                        ping.record_non_data();
+
+                        let is_connect = req.method() == Method::CONNECT;
+                        let (mut parts, stream) = req.into_parts();
+                        let (mut req, connect_parts) = if !is_connect {
+                            (
+                                Request::from_parts(
+                                    parts,
+                                    IncomingBody::h2(stream, content_length.into(), ping),
+                                ),
+                                None,
+                            )
+                        } else {
+                            if content_length.map_or(false, |len| len != 0) {
+                                warn!("h2 connect request with non-zero body not supported");
+                                respond.send_reset(h2::Reason::INTERNAL_ERROR);
+                                return Poll::Ready(Ok(()));
+                            }
+                            let (pending, upgrade) = crate::upgrade::pending();
+                            debug_assert!(parts.extensions.get::<OnUpgrade>().is_none());
+                            parts.extensions.insert(upgrade);
+                            (
+                                Request::from_parts(parts, IncomingBody::empty()),
+                                Some(ConnectParts {
+                                    pending,
+                                    ping,
+                                    recv_stream: stream,
+                                }),
+                            )
+                        };
+
+                        if let Some(protocol) = req.extensions_mut().remove::<h2::ext::Protocol>() {
+                            req.extensions_mut().insert(Protocol::from_inner(protocol));
+                        }
+
+                        let fut = H2Stream::new(
+                            service.call(req),
+                            connect_parts,
+                            respond,
+                            self.date_header,
+                        );
+
+                        exec.execute_h2stream(fut);
+                    }
+                    Some(Err(e)) => {
+                        return Poll::Ready(Err(crate::Error::new_h2(e)));
+                    }
+                    None => {
+                        // no more incoming streams...
+                        if let Some((ref ping, _)) = self.ping {
+                            ping.ensure_not_timed_out()?;
+                        }
+
+                        trace!("incoming connection complete");
+                        return Poll::Ready(Ok(()));
+                    }
+                }
+            }
+        }
+
+        debug_assert!(
+            self.closing.is_some(),
+            "poll_server broke loop without closing"
+        );
+
+        ready!(self.conn.poll_closed(cx).map_err(crate::Error::new_h2))?;
+
+        Poll::Ready(Err(self.closing.take().expect("polled after error")))
+    }
+
+    fn poll_ping(&mut self, cx: &mut Context<'_>) {
+        if let Some((_, ref mut estimator)) = self.ping {
+            match estimator.poll(cx) {
+                Poll::Ready(ping::Ponged::SizeUpdate(wnd)) => {
+                    self.conn.set_target_window_size(wnd);
+                    let _ = self.conn.set_initial_window_size(wnd);
+                }
+                Poll::Ready(ping::Ponged::KeepAliveTimedOut) => {
+                    debug!("keep-alive timed out, closing connection");
+                    self.conn.abrupt_shutdown(h2::Reason::NO_ERROR);
+                }
+                Poll::Pending => {}
+            }
+        }
+    }
+}
+
+pin_project! {
+    #[allow(missing_debug_implementations)]
+    pub struct H2Stream<F, B>
+    where
+        B: Body,
+    {
+        reply: SendResponse<SendBuf<B::Data>>,
+        #[pin]
+        state: H2StreamState<F, B>,
+        date_header: bool,
+    }
+}
+
+pin_project! {
+    #[project = H2StreamStateProj]
+    enum H2StreamState<F, B>
+    where
+        B: Body,
+    {
+        Service {
+            #[pin]
+            fut: F,
+            connect_parts: Option<ConnectParts>,
+        },
+        Body {
+            #[pin]
+            pipe: PipeToSendStream<B>,
+        },
+    }
+}
+
+struct ConnectParts {
+    pending: Pending,
+    ping: Recorder,
+    recv_stream: RecvStream,
+}
+
+impl<F, B> H2Stream<F, B>
+where
+    B: Body,
+{
+    fn new(
+        fut: F,
+        connect_parts: Option<ConnectParts>,
+        respond: SendResponse<SendBuf<B::Data>>,
+        date_header: bool,
+    ) -> H2Stream<F, B> {
+        H2Stream {
+            reply: respond,
+            state: H2StreamState::Service { fut, connect_parts },
+            date_header,
+        }
+    }
+}
+
+macro_rules! reply {
+    ($me:expr, $res:expr, $eos:expr) => {{
+        match $me.reply.send_response($res, $eos) {
+            Ok(tx) => tx,
+            Err(e) => {
+                debug!("send response error: {}", e);
+                $me.reply.send_reset(Reason::INTERNAL_ERROR);
+                return Poll::Ready(Err(crate::Error::new_h2(e)));
+            }
+        }
+    }};
+}
+
+impl<F, B, E> H2Stream<F, B>
+where
+    F: Future<Output = Result<Response<B>, E>>,
+    B: Body,
+    B::Data: 'static,
+    B::Error: Into<Box<dyn StdError + Send + Sync>>,
+    E: Into<Box<dyn StdError + Send + Sync>>,
+{
+    fn poll2(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<crate::Result<()>> {
+        let mut me = self.project();
+        loop {
+            let next = match me.state.as_mut().project() {
+                H2StreamStateProj::Service {
+                    fut: h,
+                    connect_parts,
+                } => {
+                    let res = match h.poll(cx) {
+                        Poll::Ready(Ok(r)) => r,
+                        Poll::Pending => {
+                            // 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.
+                            if let Poll::Ready(reason) =
+                                me.reply.poll_reset(cx).map_err(crate::Error::new_h2)?
+                            {
+                                debug!("stream received RST_STREAM: {:?}", reason);
+                                return Poll::Ready(Err(crate::Error::new_h2(reason.into())));
+                            }
+                            return Poll::Pending;
+                        }
+                        Poll::Ready(Err(e)) => {
+                            let err = crate::Error::new_user_service(e);
+                            warn!("http2 service errored: {}", err);
+                            me.reply.send_reset(err.h2_reason());
+                            return Poll::Ready(Err(err));
+                        }
+                    };
+
+                    let (head, body) = res.into_parts();
+                    let mut res = ::http::Response::from_parts(head, ());
+                    super::strip_connection_headers(res.headers_mut(), false);
+
+                    // set Date header if it isn't already set if instructed
+                    if *me.date_header {
+                        res.headers_mut()
+                            .entry(::http::header::DATE)
+                            .or_insert_with(date::update_and_header_value);
+                    }
+
+                    if let Some(connect_parts) = connect_parts.take() {
+                        if res.status().is_success() {
+                            if headers::content_length_parse_all(res.headers())
+                                .map_or(false, |len| len != 0)
+                            {
+                                warn!("h2 successful response to CONNECT request with body not supported");
+                                me.reply.send_reset(h2::Reason::INTERNAL_ERROR);
+                                return Poll::Ready(Err(crate::Error::new_user_header()));
+                            }
+                            if res
+                                .headers_mut()
+                                .remove(::http::header::CONTENT_LENGTH)
+                                .is_some()
+                            {
+                                warn!("successful response to CONNECT request disallows content-length header");
+                            }
+                            let send_stream = reply!(me, res, false);
+                            connect_parts.pending.fulfill(Upgraded::new(
+                                H2Upgraded {
+                                    ping: connect_parts.ping,
+                                    recv_stream: connect_parts.recv_stream,
+                                    send_stream: unsafe { UpgradedSendStream::new(send_stream) },
+                                    buf: Bytes::new(),
+                                },
+                                Bytes::new(),
+                            ));
+                            return Poll::Ready(Ok(()));
+                        }
+                    }
+
+                    if !body.is_end_stream() {
+                        // automatically set Content-Length from body...
+                        if let Some(len) = body.size_hint().exact() {
+                            headers::set_content_length_if_missing(res.headers_mut(), len);
+                        }
+
+                        let body_tx = reply!(me, res, false);
+                        H2StreamState::Body {
+                            pipe: PipeToSendStream::new(body, body_tx),
+                        }
+                    } else {
+                        reply!(me, res, true);
+                        return Poll::Ready(Ok(()));
+                    }
+                }
+                H2StreamStateProj::Body { pipe } => {
+                    return pipe.poll(cx);
+                }
+            };
+            me.state.set(next);
+        }
+    }
+}
+
+impl<F, B, E> Future for H2Stream<F, B>
+where
+    F: Future<Output = Result<Response<B>, E>>,
+    B: Body,
+    B::Data: 'static,
+    B::Error: Into<Box<dyn StdError + Send + Sync>>,
+    E: Into<Box<dyn StdError + Send + Sync>>,
+{
+    type Output = ();
+
+    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        self.poll2(cx).map(|res| {
+            if let Err(_e) = res {
+                debug!("stream error: {}", _e);
+            }
+        })
+    }
+}