use crate::{import::*, WsErr, WsStream};
#[derive(Debug)]
pub struct WsStreamIo {
inner: WsStream,
}
impl WsStreamIo {
pub fn new(inner: WsStream) -> Self {
Self { inner }
}
}
impl Stream for WsStreamIo {
type Item = Result<Vec<u8>, io::Error>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
Pin::new(&mut self.inner)
.poll_next(cx)
.map(|opt| opt.map(|msg| Ok(msg.into())))
}
}
impl Sink<Vec<u8>> for WsStreamIo {
type Error = io::Error;
fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
Pin::new(&mut self.inner)
.poll_ready(cx)
.map(convert_res_tuple)
}
fn start_send(mut self: Pin<&mut Self>, item: Vec<u8>) -> Result<(), Self::Error> {
Pin::new(&mut self.inner)
.start_send(item.into())
.map_err(convert_err)
}
fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
Pin::new(&mut self.inner)
.poll_flush(cx)
.map(convert_res_tuple)
}
fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
Pin::new(&mut self.inner)
.poll_close(cx)
.map(convert_res_tuple)
}
}
fn convert_res_tuple(res: Result<(), WsErr>) -> Result<(), io::Error> {
res.map_err(convert_err)
}
fn convert_err(err: WsErr) -> io::Error {
match err {
WsErr::ConnectionNotOpen => return io::Error::from(io::ErrorKind::NotConnected),
_ => unreachable!(),
}
}