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use std::{
pin::Pin,
task::{Context, Poll},
};
use async_tungstenite::tungstenite::Message;
use futures_util::{Sink, SinkExt, Stream, StreamExt};
#[cfg(feature = "smol")]
use futures_rustls::TlsStream;
#[cfg(feature = "tokio")]
use tokio_rustls::TlsStream;
use karyon_core::async_runtime::net::TcpStream;
use crate::{codec::WebSocketCodec, Error, Result};
#[cfg(feature = "tokio")]
type WebSocketStream<T> =
async_tungstenite::WebSocketStream<async_tungstenite::tokio::TokioAdapter<T>>;
#[cfg(feature = "smol")]
use async_tungstenite::WebSocketStream;
pub struct WsStream<C> {
inner: InnerWSConn,
codec: C,
}
impl<C> WsStream<C>
where
C: WebSocketCodec,
{
pub fn new_ws(conn: WebSocketStream<TcpStream>, codec: C) -> Self {
Self {
inner: InnerWSConn::Plain(conn),
codec,
}
}
pub fn new_wss(conn: WebSocketStream<TlsStream<TcpStream>>, codec: C) -> Self {
Self {
inner: InnerWSConn::Tls(conn),
codec,
}
}
pub async fn recv(&mut self) -> Result<C::Item> {
match self.inner.next().await {
Some(msg) => self.codec.decode(&msg?),
None => Err(Error::IO(std::io::ErrorKind::ConnectionAborted.into())),
}
}
pub async fn send(&mut self, msg: C::Item) -> Result<()> {
let ws_msg = self.codec.encode(&msg)?;
self.inner.send(ws_msg).await
}
}
enum InnerWSConn {
Plain(WebSocketStream<TcpStream>),
Tls(WebSocketStream<TlsStream<TcpStream>>),
}
impl Sink<Message> for InnerWSConn {
type Error = Error;
fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>> {
match &mut *self {
InnerWSConn::Plain(s) => Pin::new(s).poll_ready(cx).map_err(Error::from),
InnerWSConn::Tls(s) => Pin::new(s).poll_ready(cx).map_err(Error::from),
}
}
fn start_send(mut self: Pin<&mut Self>, item: Message) -> Result<()> {
match &mut *self {
InnerWSConn::Plain(s) => Pin::new(s).start_send(item).map_err(Error::from),
InnerWSConn::Tls(s) => Pin::new(s).start_send(item).map_err(Error::from),
}
}
fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>> {
match &mut *self {
InnerWSConn::Plain(s) => Pin::new(s).poll_flush(cx).map_err(Error::from),
InnerWSConn::Tls(s) => Pin::new(s).poll_flush(cx).map_err(Error::from),
}
}
fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>> {
match &mut *self {
InnerWSConn::Plain(s) => Pin::new(s).poll_close(cx).map_err(Error::from),
InnerWSConn::Tls(s) => Pin::new(s).poll_close(cx).map_err(Error::from),
}
.map_err(Error::from)
}
}
impl Stream for InnerWSConn {
type Item = Result<Message>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
match &mut *self {
InnerWSConn::Plain(s) => Pin::new(s).poll_next(cx).map_err(Error::from),
InnerWSConn::Tls(s) => Pin::new(s).poll_next(cx).map_err(Error::from),
}
}
}
|
