wasix: Remove websocket support

Removes the websocket support from wasix.

Websockets are a high level concept.
They should not be integrated so deeply into the core of wasix.

For client connections, we will want to add support for websocket
clients into the custom wasix_http_client bindings.

For servers, the support should go into the custom wcgi server bindings.

lib/sys-utils/src/lib.rs

@@ -1,3 +1 @@
 pub mod memory;
-
-pub mod tungstenite_websocket;

lib/sys-utils/src/tungstenite_websocket.rs

@@ -1,90 +0,0 @@
-// FIXME: either just delete, or actually use somewhere!
-
-// use async_trait::async_trait;
-// use futures::stream::SplitSink;
-// use futures::stream::SplitStream;
-// use futures::SinkExt;
-// use futures_util::StreamExt;
-// use wasmer_os::wasmer_wasi::WasiRuntimeImplementation;
-// use std::pin::Pin;
-// use std::sync::Arc;
-// use std::sync::Mutex;
-// use tokio::net::TcpStream;
-// #[cfg(feature = "tokio_tungstenite")]
-// use tokio_tungstenite::{
-//     connect_async, tungstenite::protocol::Message,
-//     MaybeTlsStream, WebSocketStream
-// };
-// use wasmer_os::wasmer_wasi::WebSocketAbi;
-
-// #[allow(unused_imports)]
-// use tracing::{debug, error, info, instrument, span, trace, warn, Level};
-
-// pub struct TerminalWebSocket {
-//     sink: SplitSink<WebSocketStream<MaybeTlsStream<TcpStream>>, Message>,
-//     stream: Option<SplitStream<WebSocketStream<MaybeTlsStream<TcpStream>>>>,
-//     on_close: Arc<Mutex<Option<Box<dyn Fn() + Send + 'static>>>>,
-// }
-
-// impl TerminalWebSocket {
-//     pub async fn new(url: &str) -> Result<TerminalWebSocket, String> {
-//         let url = url::Url::parse(url)
-//             .map_err(|err| err.to_string())?;
-
-//         let (ws_stream, _) = connect_async(url).await
-//             .map_err(|err| format!("failed to connect - {}", err))?;
-//         let (sink, stream) = ws_stream.split();
-
-//         Ok(
-//             TerminalWebSocket {
-//                 sink,
-//                 stream: Some(stream),
-//                 on_close: Arc::new(Mutex::new(None)),
-//             }
-//         )
-//     }
-// }
-
-// #[async_trait]
-// impl WebSocketAbi for TerminalWebSocket {
-//     fn set_onopen(&mut self, mut callback: Box<dyn FnMut()>) {
-//         // We instantly notify that we are open
-//         callback();
-//     }
-
-//     fn set_onclose(&mut self, callback: Box<dyn Fn() + Send + 'static>) {
-//         let mut guard = self.on_close.lock().unwrap();
-//         guard.replace(callback);
-//     }
-
-//     fn set_onmessage(&mut self, callback: Box<dyn Fn(Vec<u8>) + Send + 'static>, runtime: &dyn WasiRuntimeImplementation)
-//     {
-//         if let Some(mut stream) = self.stream.take() {
-//             let on_close = self.on_close.clone();
-//             runtime.task_shared(Box::new(move || Pin::new(Box::new(async move {
-//                 while let Some(msg) = stream.next().await {
-//                     match msg {
-//                         Ok(Message::Binary(msg)) => {
-//                             callback(msg);
-//                         }
-//                         a => {
-//                             debug!("received invalid msg: {:?}", a);
-//                         }
-//                     }
-//                 }
-//                 let on_close = on_close.lock().unwrap();
-//                 if let Some(on_close) = on_close.as_ref() {
-//                     on_close();
-//                 }
-//             }))));
-//         }
-//     }
-
-//     async fn send(&mut self, data: Vec<u8>) -> Result<(), String> {
-//         self.sink
-//             .send(Message::binary(data))
-//             .await
-//             .map_err(|err| err.to_string())?;
-//         Ok(())
-//     }
-// }