This commit is contained in:
Mark 2025-05-26 09:38:41 +02:00
commit b959097944
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src/main.rs Normal file
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use std::time::Duration;
use futures_util::{SinkExt, StreamExt};
use tokio::{
io::{AsyncReadExt, AsyncWriteExt},
net::{TcpListener, TcpStream},
spawn,
time::sleep,
};
use tokio_tungstenite::tungstenite::Message;
#[tokio::main(flavor = "current_thread")]
async fn main() {
let addr = std::env::var("TCPWS_ADDR").expect("expected env var TCPWS_ADDR");
let listener =
TcpListener::bind(std::env::var("TCPWS_BIND").expect("expected env var TCPWS_BIND"))
.await
.unwrap();
loop {
if let Ok((ws, _)) = listener.accept().await {
if let Ok(con) = TcpStream::connect(&addr).await {
spawn(async move {
let (mut con_rx, mut con_tx) = con.into_split();
let ws = tokio_tungstenite::accept_async(ws).await.unwrap();
let (mut ws_tx, mut ws_rx) = ws.split();
spawn(async move {
loop {
match ws_rx.next().await {
Some(Ok(Message::Binary(data))) => {
con_tx.write_all(&data).await.unwrap();
}
Some(Ok(Message::Text(data))) => {
con_tx.write_all(data.as_bytes()).await.unwrap();
}
Some(Ok(
Message::Ping(_) | Message::Pong(_) | Message::Frame(_),
)) => {}
None | Some(Err(_)) | Some(Ok(Message::Close(_))) => {
con_tx.shutdown().await.ok();
break;
}
}
}
});
let mut buf = [0u8; 256];
loop {
match con_rx.read(&mut buf).await {
Err(_) | Ok(0) => {
ws_tx.close().await.ok();
break;
}
Ok(n) => ws_tx
.send(Message::binary(buf[0..n].to_vec()))
.await
.unwrap(),
}
}
});
}
} else {
sleep(Duration::from_millis(100)).await;
}
}
}