humphrey 0.7.0

A Performance-Focused, Dependency-Free Web Server.
Documentation 
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//! Provides a wrapper around the stream to allow for simpler APIs.

#![allow(clippy::large_enum_variant)]

#[cfg(feature = "tls")]
use rustls::ServerConnection;

use std::io::{Error, Read, Write};
use std::net::SocketAddr;
use std::time::Duration;

use std::net::TcpStream;

/// Represents a connection to a remote client or server.
///
/// This is typically a wrapper around `TcpStream`, but is required to allow for a single API
///   to be used to process both regular and TLS connections.
pub enum Stream {
    /// A regular TCP stream.
    Tcp(TcpStream),
    /// A TLS stream.
    #[cfg(feature = "tls")]
    Tls(rustls::StreamOwned<ServerConnection, TcpStream>),
}

impl Read for Stream {
    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
        match self {
            Stream::Tcp(stream) => stream.read(buf),
            #[cfg(feature = "tls")]
            Stream::Tls(stream) => stream.read(buf),
        }
    }
}

impl Write for Stream {
    fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
        match self {
            Stream::Tcp(stream) => stream.write(buf),
            #[cfg(feature = "tls")]
            Stream::Tls(stream) => stream.write(buf),
        }
    }

    fn flush(&mut self) -> std::io::Result<()> {
        match self {
            Stream::Tcp(stream) => stream.flush(),
            #[cfg(feature = "tls")]
            Stream::Tls(stream) => stream.flush(),
        }
    }
}

impl Stream {
    /// Returns the socket address of the remote peer of this connection.
    pub fn peer_addr(&self) -> Result<SocketAddr, Error> {
        match self {
            Stream::Tcp(stream) => stream.peer_addr(),
            #[cfg(feature = "tls")]
            Stream::Tls(stream) => stream.sock.peer_addr(),
        }
    }

    /// Shuts down both the read and write halves of this connection.
    pub fn shutdown(&self) -> std::io::Result<()> {
        match self {
            Stream::Tcp(stream) => stream.shutdown(std::net::Shutdown::Both),
            #[cfg(feature = "tls")]
            Stream::Tls(stream) => stream.sock.shutdown(std::net::Shutdown::Both),
        }
    }

    /// Sets the read and write timeouts of the stream.
    pub fn set_timeout(&self, timeout: Option<Duration>) -> std::io::Result<()> {
        match self {
            Stream::Tcp(stream) => {
                stream.set_read_timeout(timeout)?;
                stream.set_write_timeout(timeout)
            }
            #[cfg(feature = "tls")]
            Stream::Tls(stream) => {
                stream.sock.set_read_timeout(timeout)?;
                stream.sock.set_write_timeout(timeout)
            }
        }
    }

    /// Sets this connection to nonblocking mode.
    pub fn set_nonblocking(&self) -> std::io::Result<()> {
        match self {
            Stream::Tcp(stream) => stream.set_nonblocking(true),
            #[cfg(feature = "tls")]
            Stream::Tls(stream) => stream.sock.set_nonblocking(true),
        }
    }

    /// Sets this connection to blocking mode.
    pub fn set_blocking(&self) -> std::io::Result<()> {
        match self {
            Stream::Tcp(stream) => stream.set_nonblocking(false),
            #[cfg(feature = "tls")]
            Stream::Tls(stream) => stream.sock.set_nonblocking(false),
        }
    }
}