use crate::tls::{ChannelBinding, TlsStream};
use std::io;
use std::pin::Pin;
use std::task::{Context, Poll};
use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
pub enum MaybeTlsStream<S, T> {
Raw(S),
Tls(T),
}
impl<S, T> AsyncRead for MaybeTlsStream<S, T>
where
S: AsyncRead + Unpin,
T: AsyncRead + Unpin,
{
fn poll_read(
mut self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &mut ReadBuf<'_>,
) -> Poll<io::Result<()>> {
match &mut *self {
MaybeTlsStream::Raw(s) => Pin::new(s).poll_read(cx, buf),
MaybeTlsStream::Tls(s) => Pin::new(s).poll_read(cx, buf),
}
}
}
impl<S, T> AsyncWrite for MaybeTlsStream<S, T>
where
S: AsyncWrite + Unpin,
T: AsyncWrite + Unpin,
{
fn poll_write(
mut self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8],
) -> Poll<io::Result<usize>> {
match &mut *self {
MaybeTlsStream::Raw(s) => Pin::new(s).poll_write(cx, buf),
MaybeTlsStream::Tls(s) => Pin::new(s).poll_write(cx, buf),
}
}
fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
match &mut *self {
MaybeTlsStream::Raw(s) => Pin::new(s).poll_flush(cx),
MaybeTlsStream::Tls(s) => Pin::new(s).poll_flush(cx),
}
}
fn poll_shutdown(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
match &mut *self {
MaybeTlsStream::Raw(s) => Pin::new(s).poll_shutdown(cx),
MaybeTlsStream::Tls(s) => Pin::new(s).poll_shutdown(cx),
}
}
}
impl<S, T> TlsStream for MaybeTlsStream<S, T>
where
S: AsyncRead + AsyncWrite + Unpin,
T: TlsStream + Unpin,
{
fn channel_binding(&self) -> ChannelBinding {
match self {
MaybeTlsStream::Raw(_) => ChannelBinding::none(),
MaybeTlsStream::Tls(s) => s.channel_binding(),
}
}
}