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accept_async_with_config, + WebSocketStream, + tungstenite::{ + Message, + Result, + Error as WsError, + protocol::WebSocketConfig, + }, +}; + +type Tx = SplitSink, Message>; +type Rx = SplitStream>; + +async fn accept(tcp_stream: TcpStream) -> Result, WsError> { + let wsconfig = WebSocketConfig { + max_send_queue: Some(5), + max_message_size: None, + max_frame_size: None, + accept_unmasked_frames: false, + }; + accept_async_with_config(tcp_stream, Some(wsconfig)).await +} + +async fn handle(mut rx: Rx) -> anyhow::Result<()> { + println!("enter incoming loop"); + while let Some(msg) = rx.next().await { + msg.map(|x| { println!("Got: {x:?}"); })?; + } + Ok(()) +} + +async fn serve(mut tx: Tx) -> anyhow::Result<()> { + println!("enter send loop"); + let mut c = 0; + loop { + sleep(Duration::from_millis(1000)).await; + c += 1; + let txt = format!("bla bla {c}"); + println!("{txt}"); + tx.send(Message::Text(txt)).await?; + } +} + +#[tokio::main] +async fn main() -> io::Result<()> { + let listener = TcpListener::bind("127.0.0.1:8080").await?; + + while let Ok((tcp_stream, addr)) = listener.accept().await { + println!("Got a connection from: {addr}"); + + let ws_result = accept(tcp_stream).await; + let (tx, rx) = ws_result.map(|ws| ws.split()).unwrap(); + tokio::select! { + res = handle(rx) => println!("Done waiting for messages. Reason: {res:?}"), + _ = serve(tx) => println!("Done serving locations.") + } + } + + Ok(()) +}