hyper_serve/tls_rustls/
future.rs

1//! Future types.
2
3use crate::tls_rustls::RustlsConfig;
4use pin_project_lite::pin_project;
5use std::io::{Error, ErrorKind};
6use std::time::Duration;
7use std::{
8    fmt,
9    future::Future,
10    io,
11    pin::Pin,
12    task::{Context, Poll},
13};
14use tokio::io::{AsyncRead, AsyncWrite};
15use tokio::time::{timeout, Timeout};
16use tokio_rustls::{server::TlsStream, Accept, TlsAcceptor};
17
18pin_project! {
19    /// Future type for [`RustlsAcceptor`](crate::tls_rustls::RustlsAcceptor).
20    pub struct RustlsAcceptorFuture<F, I, S> {
21        #[pin]
22        inner: AcceptFuture<F, I, S>,
23        config: Option<RustlsConfig>,
24    }
25}
26
27impl<F, I, S> RustlsAcceptorFuture<F, I, S> {
28    pub(crate) fn new(future: F, config: RustlsConfig, handshake_timeout: Duration) -> Self {
29        let inner = AcceptFuture::Inner {
30            future,
31            handshake_timeout,
32        };
33        let config = Some(config);
34
35        Self { inner, config }
36    }
37}
38
39impl<F, I, S> fmt::Debug for RustlsAcceptorFuture<F, I, S> {
40    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
41        f.debug_struct("RustlsAcceptorFuture").finish()
42    }
43}
44
45pin_project! {
46    #[project = AcceptFutureProj]
47    enum AcceptFuture<F, I, S> {
48        Inner {
49            #[pin]
50            future: F,
51            handshake_timeout: Duration,
52        },
53        Accept {
54            #[pin]
55            future: Timeout<Accept<I>>,
56            service: Option<S>,
57        },
58    }
59}
60
61impl<F, I, S> Future for RustlsAcceptorFuture<F, I, S>
62where
63    F: Future<Output = io::Result<(I, S)>>,
64    I: AsyncRead + AsyncWrite + Unpin,
65{
66    type Output = io::Result<(TlsStream<I>, S)>;
67
68    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
69        let mut this = self.project();
70
71        loop {
72            match this.inner.as_mut().project() {
73                AcceptFutureProj::Inner {
74                    future,
75                    handshake_timeout,
76                } => {
77                    match future.poll(cx) {
78                        Poll::Ready(Ok((stream, service))) => {
79                            let server_config = this.config
80                                .take()
81                                .expect("config is not set. this is a bug in hyper-serve, please report")
82                                .get_inner();
83
84                            let acceptor = TlsAcceptor::from(server_config);
85                            let future = acceptor.accept(stream);
86
87                            let service = Some(service);
88                            let handshake_timeout = *handshake_timeout;
89
90                            this.inner.set(AcceptFuture::Accept {
91                                future: timeout(handshake_timeout, future),
92                                service,
93                            });
94                        }
95                        Poll::Ready(Err(e)) => return Poll::Ready(Err(e)),
96                        Poll::Pending => return Poll::Pending,
97                    }
98                }
99                AcceptFutureProj::Accept { future, service } => match future.poll(cx) {
100                    Poll::Ready(Ok(Ok(stream))) => {
101                        let service = service.take().expect("future polled after ready");
102
103                        return Poll::Ready(Ok((stream, service)));
104                    }
105                    Poll::Ready(Ok(Err(e))) => return Poll::Ready(Err(e)),
106                    Poll::Ready(Err(timeout)) => {
107                        return Poll::Ready(Err(Error::new(ErrorKind::TimedOut, timeout)))
108                    }
109                    Poll::Pending => return Poll::Pending,
110                },
111            }
112        }
113    }
114}
hyper_serve/tls_rustls/future.rs

hyper_serve/tls_rustls/
future.rs
