use async_std::task; use async_std::net::{TcpListener, TcpStream, ToSocketAddrs}; use async_tungstenite::{accept_async, client_async}; #[async_std::test] async fn handshakes() { let (tx, rx) = futures::channel::oneshot::channel(); let f = async move { let address = "0.0.0.0:12345" .to_socket_addrs() .await .expect("Not a valid address") .next() .expect("No address resolved"); let listener = TcpListener::bind(&address).await.unwrap(); tx.send(()).unwrap(); while let Ok((connection, _)) = listener.accept().await { let stream = accept_async(connection).await; stream.expect("Failed to handshake with connection"); } }; task::spawn(f); rx.await.expect("Failed to wait for server to be ready"); let address = "0.0.0.0:12345" .to_socket_addrs() .await .expect("Not a valid address") .next() .expect("No address resolved"); let tcp = TcpStream::connect(&address) .await .expect("Failed to connect"); let url = url::Url::parse("ws://localhost:12345/").unwrap(); let _stream = client_async(url, tcp) .await .expect("Client failed to connect"); }