RPM build fix (reverted CI changes which will need to be un-reverted or made conditional) and vendor Rust dependencies to make builds much faster in any CI system.

zeroidc/vendor/hyper/src/server/tcp.rs

@@ -0,0 +1,318 @@
+use std::fmt;
+use std::io;
+use std::net::{SocketAddr, TcpListener as StdTcpListener};
+use std::time::Duration;
+
+use tokio::net::TcpListener;
+use tokio::time::Sleep;
+use tracing::{debug, error, trace};
+
+use crate::common::{task, Future, Pin, Poll};
+
+#[allow(unreachable_pub)] // https://github.com/rust-lang/rust/issues/57411
+pub use self::addr_stream::AddrStream;
+use super::accept::Accept;
+
+/// A stream of connections from binding to an address.
+#[must_use = "streams do nothing unless polled"]
+pub struct AddrIncoming {
+    addr: SocketAddr,
+    listener: TcpListener,
+    sleep_on_errors: bool,
+    tcp_keepalive_timeout: Option<Duration>,
+    tcp_nodelay: bool,
+    timeout: Option<Pin<Box<Sleep>>>,
+}
+
+impl AddrIncoming {
+    pub(super) fn new(addr: &SocketAddr) -> crate::Result<Self> {
+        let std_listener = StdTcpListener::bind(addr).map_err(crate::Error::new_listen)?;
+
+        AddrIncoming::from_std(std_listener)
+    }
+
+    pub(super) fn from_std(std_listener: StdTcpListener) -> crate::Result<Self> {
+        // TcpListener::from_std doesn't set O_NONBLOCK
+        std_listener
+            .set_nonblocking(true)
+            .map_err(crate::Error::new_listen)?;
+        let listener = TcpListener::from_std(std_listener).map_err(crate::Error::new_listen)?;
+        AddrIncoming::from_listener(listener)
+    }
+
+    /// Creates a new `AddrIncoming` binding to provided socket address.
+    pub fn bind(addr: &SocketAddr) -> crate::Result<Self> {
+        AddrIncoming::new(addr)
+    }
+
+    /// Creates a new `AddrIncoming` from an existing `tokio::net::TcpListener`.
+    pub fn from_listener(listener: TcpListener) -> crate::Result<Self> {
+        let addr = listener.local_addr().map_err(crate::Error::new_listen)?;
+        Ok(AddrIncoming {
+            listener,
+            addr,
+            sleep_on_errors: true,
+            tcp_keepalive_timeout: None,
+            tcp_nodelay: false,
+            timeout: None,
+        })
+    }
+
+    /// Get the local address bound to this listener.
+    pub fn local_addr(&self) -> SocketAddr {
+        self.addr
+    }
+
+    /// Set whether TCP keepalive messages are enabled on accepted connections.
+    ///
+    /// If `None` is specified, keepalive is disabled, otherwise the duration
+    /// specified will be the time to remain idle before sending TCP keepalive
+    /// probes.
+    pub fn set_keepalive(&mut self, keepalive: Option<Duration>) -> &mut Self {
+        self.tcp_keepalive_timeout = keepalive;
+        self
+    }
+
+    /// Set the value of `TCP_NODELAY` option for accepted connections.
+    pub fn set_nodelay(&mut self, enabled: bool) -> &mut Self {
+        self.tcp_nodelay = enabled;
+        self
+    }
+
+    /// Set whether to sleep on accept errors.
+    ///
+    /// A possible scenario is that the process has hit the max open files
+    /// allowed, and so trying to accept a new connection will fail with
+    /// `EMFILE`. In some cases, it's preferable to just wait for some time, if
+    /// the application will likely close some files (or connections), and try
+    /// to accept the connection again. If this option is `true`, the error
+    /// will be logged at the `error` level, since it is still a big deal,
+    /// and then the listener will sleep for 1 second.
+    ///
+    /// In other cases, hitting the max open files should be treat similarly
+    /// to being out-of-memory, and simply error (and shutdown). Setting
+    /// this option to `false` will allow that.
+    ///
+    /// Default is `true`.
+    pub fn set_sleep_on_errors(&mut self, val: bool) {
+        self.sleep_on_errors = val;
+    }
+
+    fn poll_next_(&mut self, cx: &mut task::Context<'_>) -> Poll<io::Result<AddrStream>> {
+        // Check if a previous timeout is active that was set by IO errors.
+        if let Some(ref mut to) = self.timeout {
+            ready!(Pin::new(to).poll(cx));
+        }
+        self.timeout = None;
+
+        loop {
+            match ready!(self.listener.poll_accept(cx)) {
+                Ok((socket, remote_addr)) => {
+                    if let Some(dur) = self.tcp_keepalive_timeout {
+                        let socket = socket2::SockRef::from(&socket);
+                        let conf = socket2::TcpKeepalive::new().with_time(dur);
+                        if let Err(e) = socket.set_tcp_keepalive(&conf) {
+                            trace!("error trying to set TCP keepalive: {}", e);
+                        }
+                    }
+                    if let Err(e) = socket.set_nodelay(self.tcp_nodelay) {
+                        trace!("error trying to set TCP nodelay: {}", e);
+                    }
+                    let local_addr = socket.local_addr()?;
+                    return Poll::Ready(Ok(AddrStream::new(socket, remote_addr, local_addr)));
+                }
+                Err(e) => {
+                    // Connection errors can be ignored directly, continue by
+                    // accepting the next request.
+                    if is_connection_error(&e) {
+                        debug!("accepted connection already errored: {}", e);
+                        continue;
+                    }
+
+                    if self.sleep_on_errors {
+                        error!("accept error: {}", e);
+
+                        // Sleep 1s.
+                        let mut timeout = Box::pin(tokio::time::sleep(Duration::from_secs(1)));
+
+                        match timeout.as_mut().poll(cx) {
+                            Poll::Ready(()) => {
+                                // Wow, it's been a second already? Ok then...
+                                continue;
+                            }
+                            Poll::Pending => {
+                                self.timeout = Some(timeout);
+                                return Poll::Pending;
+                            }
+                        }
+                    } else {
+                        return Poll::Ready(Err(e));
+                    }
+                }
+            }
+        }
+    }
+}
+
+impl Accept for AddrIncoming {
+    type Conn = AddrStream;
+    type Error = io::Error;
+
+    fn poll_accept(
+        mut self: Pin<&mut Self>,
+        cx: &mut task::Context<'_>,
+    ) -> Poll<Option<Result<Self::Conn, Self::Error>>> {
+        let result = ready!(self.poll_next_(cx));
+        Poll::Ready(Some(result))
+    }
+}
+
+/// This function defines errors that are per-connection. Which basically
+/// means that if we get this error from `accept()` system call it means
+/// next connection might be ready to be accepted.
+///
+/// All other errors will incur a timeout before next `accept()` is performed.
+/// The timeout is useful to handle resource exhaustion errors like ENFILE
+/// and EMFILE. Otherwise, could enter into tight loop.
+fn is_connection_error(e: &io::Error) -> bool {
+    matches!(
+        e.kind(),
+        io::ErrorKind::ConnectionRefused
+            | io::ErrorKind::ConnectionAborted
+            | io::ErrorKind::ConnectionReset
+    )
+}
+
+impl fmt::Debug for AddrIncoming {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("AddrIncoming")
+            .field("addr", &self.addr)
+            .field("sleep_on_errors", &self.sleep_on_errors)
+            .field("tcp_keepalive_timeout", &self.tcp_keepalive_timeout)
+            .field("tcp_nodelay", &self.tcp_nodelay)
+            .finish()
+    }
+}
+
+mod addr_stream {
+    use std::io;
+    use std::net::SocketAddr;
+    #[cfg(unix)]
+    use std::os::unix::io::{AsRawFd, RawFd};
+    use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
+    use tokio::net::TcpStream;
+
+    use crate::common::{task, Pin, Poll};
+
+    pin_project_lite::pin_project! {
+        /// A transport returned yieled by `AddrIncoming`.
+        #[derive(Debug)]
+        pub struct AddrStream {
+            #[pin]
+            inner: TcpStream,
+            pub(super) remote_addr: SocketAddr,
+            pub(super) local_addr: SocketAddr
+        }
+    }
+
+    impl AddrStream {
+        pub(super) fn new(
+            tcp: TcpStream,
+            remote_addr: SocketAddr,
+            local_addr: SocketAddr,
+        ) -> AddrStream {
+            AddrStream {
+                inner: tcp,
+                remote_addr,
+                local_addr,
+            }
+        }
+
+        /// Returns the remote (peer) address of this connection.
+        #[inline]
+        pub fn remote_addr(&self) -> SocketAddr {
+            self.remote_addr
+        }
+
+        /// Returns the local address of this connection.
+        #[inline]
+        pub fn local_addr(&self) -> SocketAddr {
+            self.local_addr
+        }
+
+        /// Consumes the AddrStream and returns the underlying IO object
+        #[inline]
+        pub fn into_inner(self) -> TcpStream {
+            self.inner
+        }
+
+        /// Attempt to receive data on the socket, without removing that data
+        /// from the queue, registering the current task for wakeup if data is
+        /// not yet available.
+        pub fn poll_peek(
+            &mut self,
+            cx: &mut task::Context<'_>,
+            buf: &mut tokio::io::ReadBuf<'_>,
+        ) -> Poll<io::Result<usize>> {
+            self.inner.poll_peek(cx, buf)
+        }
+    }
+
+    impl AsyncRead for AddrStream {
+        #[inline]
+        fn poll_read(
+            self: Pin<&mut Self>,
+            cx: &mut task::Context<'_>,
+            buf: &mut ReadBuf<'_>,
+        ) -> Poll<io::Result<()>> {
+            self.project().inner.poll_read(cx, buf)
+        }
+    }
+
+    impl AsyncWrite for AddrStream {
+        #[inline]
+        fn poll_write(
+            self: Pin<&mut Self>,
+            cx: &mut task::Context<'_>,
+            buf: &[u8],
+        ) -> Poll<io::Result<usize>> {
+            self.project().inner.poll_write(cx, buf)
+        }
+
+        #[inline]
+        fn poll_write_vectored(
+            self: Pin<&mut Self>,
+            cx: &mut task::Context<'_>,
+            bufs: &[io::IoSlice<'_>],
+        ) -> Poll<io::Result<usize>> {
+            self.project().inner.poll_write_vectored(cx, bufs)
+        }
+
+        #[inline]
+        fn poll_flush(self: Pin<&mut Self>, _cx: &mut task::Context<'_>) -> Poll<io::Result<()>> {
+            // TCP flush is a noop
+            Poll::Ready(Ok(()))
+        }
+
+        #[inline]
+        fn poll_shutdown(self: Pin<&mut Self>, cx: &mut task::Context<'_>) -> Poll<io::Result<()>> {
+            self.project().inner.poll_shutdown(cx)
+        }
+
+        #[inline]
+        fn is_write_vectored(&self) -> bool {
+            // Note that since `self.inner` is a `TcpStream`, this could
+            // *probably* be hard-coded to return `true`...but it seems more
+            // correct to ask it anyway (maybe we're on some platform without
+            // scatter-gather IO?)
+            self.inner.is_write_vectored()
+        }
+    }
+
+    #[cfg(unix)]
+    impl AsRawFd for AddrStream {
+        fn as_raw_fd(&self) -> RawFd {
+            self.inner.as_raw_fd()
+        }
+    }
+}